Sewing electric drive any industrial machine has not only a different design of speed control (clutch), but also a different electrical circuit, the principle of operation of the electric motor.
Household models of electric drives have a low power from 40 to 110 watts, a low rotation speed and an asynchronous type of motor operation. In other words, a household electric motor cannot withstand large and prolonged loads and requires periodic "respite". The sewing engine of an industrial machine can work for days without interruption, without overheating and without losing speed.
If you are looking for a mass sewing machine, then immediately think of a good suitable drive. According to the ads, you can buy inexpensively used tables with motors Soviet issue... These are reliable and efficient electric drives and are probably the ones you should use. But keep in mind that they all work very noisy, and no adjustment can eliminate this noise. Therefore, we recommend purchasing immediately good drives, for example, a table and a drive supplied with a Typical sewing machine. And it is precisely such a sewing electric drive that we will consider in detail in this article.
A sewing drive from Typical can be purchased separately and installed on any industrial table, but it is better to purchase it complete with the table, especially since the table itself is cheaper than the motor.
By the way, you can buy a convenient sewing table for a household sewing machine. A comfortable spacious table, and at the same time a cutting sewing table will make your work more comfortable, which will certainly affect your mood and, accordingly, the quality of work. If there is an opportunity and you have to sew a lot, never neglect such "little things".
Even such an insignificant detail as an electric drive switch creates comfort in work and affects the mood.
Electric motor power and mains voltage
On front side motor there is a label where the mains voltage and motor power are indicated.
If you are going to install a typewriter at home or in a small studio where there is no 380 volt outlet, choose an electric motor for operation from a 220 volt network.
And the engine power in this example does not really matter, since the speed of the machine depends on other factors. We will talk about this below.
What is a friction drive? If you drive a car yourself, then you should know what a clutch is. So the friction clutch of the sewing drive is similar.
The motor rotates constantly at the same speed. When you press the pedal, the disc of the friction device (ferado) with textolite pads comes to the flywheel of the motor and interacts with it. The more firmly you press the clutch disc against the flywheel of the electric motor, the better their grip and the higher the speed. Therefore, sometimes from prolonged work at a slow speed, the smell of burnt textolite appears.
The amount of free play (no effort) of the drive pedal is controlled by this wing screw.
But these screws, or rather two screws (one more on the back), regulate the brakes. Yes, exactly the brakes, almost like a car.
If you work at high speed, then after stopping sewing machine by inertia, it will continue to rotate. Therefore, you need a brake that will immediately stop unnecessary rotation. It is this screw with a lock nut that adjusts the degree of "sharpness" of the brake.
We did not post a photo of the engine clutch device, an electrician should carry out engine repairs, but you need to be able to regulate its work with your own hands.
The lift height or pedal angle is best adjusted here.
What determines the speed of an industrial sewing machine
The speed of an industrial sewing machine depends primarily on the number of revolutions of the electric motor. This parameter can be found on the tag or in the drive passport. But such details are of interest only to factory tailoring specialists. For small manufacturers, this parameter of the engine operation is secondary, since there is a different way of adjusting the speed of the industrial sewing machine.
Namely, by changing the engine pulley. The larger the pulley diameter, the higher the maximum operating speed of the sewing machine.
Changing the pulley is not difficult at all, for this you need a 19 key and the pulley itself, which is usually attached to the engine. But keep in mind that you will have to adjust the length of the drive belt, and in many cases it must have a different diameter.
No matter how good an industrial drive is, even such a modern, almost silent and beautiful one like the Typical company, but it is not always needed. This applies to home-based seamstresses. They often work from home in industrial sewing machines ah, such as Grade 1022, Grade 97. For various reasons, but primarily the increased operating noise, they cannot use them.
To simply and inexpensively solve this problem, buy the TUR-2 electric drive and install it directly on the body of an industrial machine. We will not explain how to install, in each case you have to use your own solution. But we can advise, if necessary, to solder the wires instead of the plug as shown in the photo.
In addition, if the position of the windings is re-soldered in such a motor, the motor will rotate in the other direction. This tip will come in handy when connecting an overlock to such a drive.
But all these tips are intended only for an electrician, amateurs are highly discouraged from disassembling the engine on their own, and, moreover, to change anything there, to solder. There is not only a direct danger of electric shock, but also a latent one. It manifests itself after a long time. Overheating of the motor windings, even in the inoperative state of the sewing machine, but connected to the network, may cause ignition of the windings.
Other brands of electric motors can also be installed on industrial machines, but we recommend only what we have tested, namely the TUR-2 electric drive.
And do not forget that the speed of the machine is noticeably reduced and you can not sew on it for long, taking long breaks (pauses).
Sometimes it becomes necessary to disassemble the sewing machine, or rather to remove the plastic case of the machine in order to gain access to some units. Such a need arises very rarely and it arises only when it is necessary to replace the electric motor of the sewing machine or the drive belt. However, to replace the electric drive, it is sometimes enough to remove only the bottom and side covers. But in order to eliminate the "jam", you will have to disassemble the machine completely.
In this article, you will learn how to find the cause of the malfunction of the electric drive, as well as how to replace the electric motor yourself.
Usually, problems with a sewing motor start at the pedal, not at the motor. However, we do not recommend disassembling the pedal yourself. Handle the pedal more carefully, do not twist the wires, do not "stand" on them as a chair leg, and in general remember that an electric current of 220 volts passes through these wires.
Hand sewing machine - drive device and repair
The sewing machine is simply irreplaceable when sewing thick fabrics and even leather. But the manual drive is so inconvenient that there is no desire to use it. However, this situation can be easily remedied if you buy an electric sewing drive with a pedal and a drive belt included. Each electric motor has a standard mount, which allows it to be installed even on a hand-held sewing machine.
The foot drive of the sewing machine is more of a museum piece nowadays. Thunders, knocks, and legs get tired. In addition, the machine often starts spinning in the wrong direction. How to refuse to use it if the Chaika or Podolskaya machine suits you perfectly? You just need to install the sewing motor. Each Seagull has a mount for it. The electric drive itself only costs twice as much as a new foot drive belt.
The zigzag attachment for the sewing machine is an ingenious device that imitates the execution of a zigzag stitch with a conventional Podolsk-type lockstitch machine.
In this article, you will find out why a machine with a horizontal shuttle loops and how to fix this sewing defect with your own hands.
The sewing machine will not sew if the flywheel friction washer is incorrectly installed, or if the bushings, etc., are rusted during long-term storage.
Each model of a household sewing machine has its own set of feet. Detailed description using the feet for household sewing machines from Janome.
To work with genuine leather, you need special tools, accessories for installing fittings, glue and other applied materials.
If you are fond of patchwork and quilting, then the best choice for you will become Husqvarna machines Sapphire series (e.g. model 870) or Pfaff Expression 4.0. We can also recommend Janome Memory Craft 6600 Professional.
Adherents of the Japanese approach to technology - sophisticated electronics and outstanding functionality for moderate money - can safely recommend the older Brother models: NV 600 and NV 400. Janome 4900 QC has similar capabilities.
Among the machines of this class, it is worth highlighting the novelty of 2009 - Janome Memory Craft 5200. This machine uses a unique needle plate, the hole in which is automatically reduced when you sew with a straight stitch. This innovation is very beneficial for the quality of the straight stitch, especially on fine fabrics, and also reduces the likelihood of skipped stitches when sewing stretch fabrics.
In the segment of electromechanical machines, the situation with the prices and functionality of the machines is similar to the situation with the computer machines. European cars are also different high quality workmanship and reliability, so Japanese cars have more features at lower prices.
Among mechanical machines with modern types of shuttles, we can safely recommend Pfaff Select 3.0 and older models. Family has very good models of the Gold Line series - 7123, 7023 and 7018, as well as the new machines of the Gold Master series (8124e, 8024a and 8018a) And from Janome we can recommend the very successful models Janome 1221 and Janome w23u from Janome.
Sewing machine device
Industrial sewing machine device
Industrial sewing machines have increased speed characteristics and slightly different kinematic connections in comparison with household sewing machines operating at low speeds. These kinematic connections are considered below using the example sewing machines 22-A and 97-A classes having an appropriate shaft speed of 3500 and 5000 rpm.
Sewing machine 22-A class PMZ
Needle mechanism(fig. 12). This mechanism is typically a crank-connecting rod, converting the rotational movement of the main shaft 6 through the crank 7 and the connecting rod 8 into a reciprocating movement of the needle bar 4 with the needle 1 fixed in the needle holder 2. The needle bar can be moved in height using regulatory screw P leash (pins).
Thread take-up mechanism(fig. 13). This is a hinge-rod type mechanism. It is a lever 3, worn on the inner shoulder of the crank pin (see Fig. 12, 7), pivotally connected to a connecting link which is pivotally connected to the body cars by means of a pin 2. The outer arm of the lever is equipped with a threading eye. As the crank of the main shaft rotates, the thread take-up eye follows a complex curve, lowering slowly to feed the thread and rising quickly to tighten the stitch. Adjustment in the mechanism is absent.
Shuttle mechanism(fig. 14). The shuttle mechanism is rotating. The shuttle receives its movements from the main shaft through the * means of two pairs of bevel gears 2 with a total gear ratio of 1 = 1: 2. The hook is attached to the shuttle shaft with 4 screws, therefore, if necessary, it can be turned or moved (when adjusting cars).
Cloth motor mechanism(fig. 15) consists of two nodes, one of which imparts vertical movement to the rail, and the other horizontally.
Node of vertical movements of the rail has the following device... A double eccentric is attached to the main shaft. When the main shaft rotates, the eccentric imparts 3 vertical movements to the connecting rod. In this case, the connecting rod, pivotally connected by the rear head to the rear rocker arm 8 of the lifting shaft 9, vibrates this shaft in the center screws. Attached to the front end of the shaft, the rocker arm 10, through the roller, raises and lowers the lever of the fabric motor 11 with the rack and, if necessary, can be rotated on the shaft ( adjustment R).
Node of horizontal movements of the rail... When the main shaft rotates, the eccentric communicates oscillatory movements to the connecting rod-fork 2 through the collar, while the rocker arm 14 vibrates with the advance shaft 13. The front rocker arm 12 imparts horizontal reciprocating movements to the lever-fork 11 with the rack. The magnitude of these movements can change, and therefore, the magnitude of the advancement of the tissue will change. To do this, it is enough to bring the connecting link 5 closer to the connecting rod-fork 2. For this purpose, screw 4 ( adjustment R). In this case, the upper arm of the fork lever 6 moves in the direction away from the working one, and the lower one, together with the connecting link 5, moves in the direction of the working one. The amount of advance decreases. To increase the amount of advance, this screw is removed. To change the direction of movement of the fabric when securing the stitch, it is enough to move the connecting link to the other side of the connecting rod 2. For this purpose, lower the front shoulder of the two-armed reverse lever 7. The roller together with the fork lever 6 and the connecting link will move to the worker. The lower the lever is lowered, the greater the amount of the connecting link moves to the worker. If you lower the reverse lever, the coil spring will return the link to its original position and the fabric under the needle will move away from the worker. By turning eccentric 1 ( adjustment P) on the main shaft, the timing of the advancement of the fabric changes. By turning the rocker arm 14 ( adjustment P) the position of the teeth of the fabric motor in the slot of the needle plate is changed.
The general arrangement of mechanisms is shown in Figure 16. The main locations are marked on the kinematic diagram. adjustments mechanisms and arrows indicate lubrication points.
Sewing machine 97-A class
A car 97-A class refers to modern high-speed equipment and has more complex kinematic connections.
Needle mechanism (fig. 17). In principle, it does not differ from a similar mechanism 22-A class, however, it is structurally made more perfectly: a shortened, lightweight, thin needle bar 8 in its movement is guided not only by the bushings 4, but also by the guide for the liner 7 put on the pin of the pin 11. This guide is equipped with automatic lubrication. The upper head of the connecting rod 9 is mounted on a needle bearing.
Thread take-up mechanism(fig. 18). The single rotating mechanism consists of a crank pin 1, a thread take-up lever disc 3, rigidly fixed with screws 2 on the finger, and the thread take-up itself - a part of a peculiar shape that is screwed to the lever. Adjustment mechanism is shown in the figure with arrows (P). The mechanism does not require lubrication.
Shuttle mechanism(fig. 19). Unlike the shuttle mechanism of the machine 22-A class shuttle mechanism 97-A class made with automatic lubrication. From the main shaft, the rotation of the shuttle shaft 7 is transmitted by the system of toothed drums 1 and gears 4 and 5 through the transmission shaft 3, which are supported by a ball bearing and a bushing mounted in the holes of the platform tides.
The gear ratio from the main shaft to the gear shaft is 1 = 1: 1, and to the shuttle shaft is 1: 2. The gears are located in a crankcase with oil.
Mechanism It has device for automatic oil supply: from the crankcase to the hook 8 through the axial hole in the hook shaft.
Cloth motor mechanism(fig. 20). The cloth motor 9 is fixed on the lever 8, pivotally connected to the rocker arm 7 of the advance shaft 6. The advance shaft receives swinging movements from the transmission shaft through the eccentric. The eccentric is enclosed by the head of the connecting rod 2, connected by means of a connecting link 3 to the rear rocker arm of the propelling shaft. Device 4-10-11-12-13-14-15-16-17 allows regulate stitch size and movement of the fabric from forward to reverse.
The fabric engine receives vertical movements from the lifting shaft 21, which also receives swinging movements from the eccentric 18 attached to the transfer shaft. The eccentric is enclosed by the head of the connecting rod 19, the other head of which is pivotally connected to the rocker arm 20 of the lifting shaft.
The mechanism is characterized by the use of needle bearings, short pivot links.
For adjustments the size of the stitch, you need to press the platform button with your left hand to the stopper, locking the ring, and with your right hand turn the main shaft of the machine by the flywheel. Places are marked on the diagram adjustments(R). Dotted arrows indicate lubrication points.
Electric drive for sewing industrial machine
Unlike household sewing machines with a manual or foot drive (some household machines supplied with electric drives), each industrial sewing machine equipped with an individual frictional electric drive, which is used to turn on and off cars and adjustments her speed.
In universal sewing machines sewing speed changes smoothly. For this, the transfer of motion by friction is used: the wheels are brought together so that they are in close contact with each other. When the force that presses one wheel against the other is weakened, one wheel begins to slip, the speed decreases! This is the principle of operation of a frictional electric drive, it consists of an electric motor, a clutch, a transmission system, control equipment and electrical protection.
The kinematics of the individual friction drive is shown in Figure 21. When the foot pedal 12 is pressed with the help of the chain, the lever 10 is rotated. In this case, the sleeve 5, due to its slot 3, moves translationally towards the electric motor 9 relative to the stationary pin 4. Disc 7, fixed on the shaft 2, enters into clutch with the 8G disk fixed on the shaft of the electric motor, and begins to rotate, transmitting the rotation to the main shaft with the help of a belt through the pulley cars... The less the pressure of the foot on the pedal, the greater the slippage between discs 7 and 8, the lower the speed of the machine. When the pedal is lowered, the spring 11 returns the lever 10 and the bushing 5 to their initial position, the disks 7 and 8 diverge and interrupt the connection with the motor shaft. Brake 6 stops disc 7.
In special sewing machines and semi-automatic machines with automatic stop, a frictionless electric drive is used.
Article on site materials
Each sewing machine has its own instruction, which is different from other brands of machines, but most economy class machines with a swinging shuttle (like a Chaika sewing machine): Brother, Jaguar, Singer, Veritas, Janome, Husqvarna and other brands have almost the same device.
Operating instructions, threading, switching operations, installing the bobbin case, lubrication and maintenance, etc. the instructions for these sewing machines are almost the same.
The main parts of the sewing machine:
1. Knob for selecting the type of stitch. Use this knob to set the desired stitch pattern: straight, darning, zigzag or zipper offset, buttonholes, etc.
2. Fine adjustment screw for buttonhole sewing. Not every car has such an adjustment. It is used to equalize the frequency (density) of the zigzag stitching when sewing the buttonhole. That is, there will be less zigzag in one direction, so before you sew a buttonhole, check it on a cut of the same fabric. And if necessary, make adjustments.
3. Thread take-up lever.
4. Removable table with storage compartment for accessories.
5. Dial knob of the upper thread tension.
6. Key for moving the fabric in the opposite direction.
7. A device for cutting the thread. A very convenient device, but it requires a certain habit. Usually it is rarely used, just forgetting about it, cutting the thread with scissors.
8. Presser foot adapter assembly.
9. Screw for the presser foot adapter.
10. Presser foot.
11. Stitch plate.
12. Shuttle knot.
13. Bobbin case.
14. Combs (rail) of the fabric conveyor.
15. Sewing needle.
16. Needle clamp screw.
17. Bobbin cover.
18. Rod for installing the coil.
19. Bobbin winder.
20. Flywheel.
21. Socket for connecting a pedal.
22. Presser foot lever.
23. Power switch and backlight.
24. Built-in carrying handle.
25. Thread guide, bobbin thread tension adjuster.
Sewing Machine Accessories and Accessories
1. Buttonhole foot. Special foot, with which it is convenient to sew buttonholes. The size of the buttonhole depends on the size of the button inserted into it. In inexpensive models of sewing machines, buttonholes are sewn in 4 steps.
2. Zipper foot.
3. Button sewing foot.
4. A set of needles.
5. Twin needle.
6. Bobbins.
7. Darning plate. This plate replaces the lever for lowering the crouton. The plate is simply slipped over the rail, hiding the teeth so that the fabric does not advance when the machine is running.
8. Screwdriver
9. Additional spool pin. This pin is required when using a twin needle and is intended to place the second spool of thread.
The accessories listed above are stored in a specially designed case inside the attachment table. These accessories are designed to facilitate most sewing tasks.
Needle installation instructions
Be sure to unplug the sewing machine before installing the needle. This must be done especially for inexperienced, just beginning seamstresses.
1. Unplug the power cord from the electrical outlet.
2. Raise the needle bar to its highest position.
3. Lower the presser foot.
4. If the needle is already installed, remove o it by loosening the needle clamp screw with your hand or a screwdriver and pulling the needle down.
5. Insert a new needle with the flat side facing the back of the machine, pushing it as high as possible until it stops in the stopper.
6. Tighten the needle clamp screw.
1. For quality sewing, the sewing needle must be straight and sharp.
2. To check the straightness of the needle, place the flat side down on a flat surface as shown in the illustration.
3. If the needle is bent or dull, replace it. Never try to straighten or sharpen it. The metal from which the needle is made is not intended for this.
See DIY sewing machine repair.
Depending on the type of work you are doing, it may be necessary to replace the presser foot. Turn the power switch to the "O" position.
2. Disengage the presser foot by lifting the lever on the back of the foot adapter assembly.
3. Place the foot on the needle plate with the cross bar of the presser foot under the notch on the bottom of the foot adapter.
4. Lower the presser foot lever, and lock the presser foot into the adapter. If the presser foot is in the correct position, the pin of the presser foot will snap into the adapter.
Reverse run of the sewing machine. Bartack
To sew in the reverse direction, fully press the reverse sewing key and hold it in this position while lightly pressing the foot controller. Release the key to sew in the forward direction. Reverse sewing is used to secure and reinforce seams. It is possible to use the reverse feed of the fabric to sew decorative stitches, as well as darning clothes.
1. Place the spool of thread on the spool pin, and pass the thread around the thread tension dial while winding it around the bobbin.
2. Pass the end of the thread through the hole in the bobbin from the inside of the bobbin.
3. Place the bobbin on the bobbin winder shaft and slide the shaft to the right. Rotate the bobbin clockwise by hand until the spring on the shaft fits into the groove on the bobbin.
4. While holding the end of the thread, gently depress the foot control to wind the thread around the bobbin a few turns. Then stop the car.
5. Cut the excess thread above the bobbin, and while depressing the foot control, continue winding the bobbin. Note: When the bobbin is full of thread, the machine stops automatically.
6. After stopping the machine, cut the thread between the bobbin and the spool, slide the shaft to the left, and remove the wound bobbin from the shaft. Note: When the bobbin winder shaft is pushed towards the pinch roller, the needle bar is stationary, but the handwheel continues to rotate. Therefore, do not touch the handwheel while winding the bobbin.
In this video, you will see how to wind thread on a bobbin using a bobbin winder.
Threading the bobbin thread into the bobbin case
Turn the power switch to the "O" position.
1. Raise the needle to its highest position by turning the handwheel toward you (counterclockwise), then raise the presser foot lever.
2. Open the bobbin cover behind the attachment table at the front of the machine, and remove the bobbin case by pulling its latch towards you and removing it from the hook.
3. Unwind approximately 10 cm of thread from the fully wound bobbin and insert the bobbin into the bobbin case. Thread the unwound end of the thread through the slot, then down and to the left, until the thread enters the hole under the tension spring.
4. Holding the bobbin case by the latch, insert it all the way into the hook, and then release the latch. Make sure that the bobbin case pin enters the groove on the top of the hook. Note: If the bobbin case is incorrectly inserted into the machine, it will fall out of the hook immediately after starting sewing.
1. Raise the presser foot lever using the appropriate lever and turn the handwheel toward you (counterclockwise) to raise the thread take-up lever to its highest position.
2. Pull up the spool pin and slide the spool of thread onto it.
3. Pass the thread through both thread guides: first through the back thread and then through the front thread.
4. Draw the thread down and around the upper thread tension dial from right to left so that the thread catches the stop spring. Hold the thread and pull it between the tension discs.
5. Guide the thread towards the back of the thread take-up lever and then around it from right to left. Pass the thread through the slit and pull it towards you until it enters the eye of the take-up thread.
6. Pull the thread down and pass it behind the thread guide.
7. Thread the needle from front to back and pull out about 5 cm of thread. Note: If the thread is not threaded correctly, it may break and skip stitches or wrinkle the fabric.
If your sewing machine does not have an instruction manual, and you do not know how to use it, then you can use this simplified and universal manual. This manual will work with any economy-class swing hook sewing machine that does a minimum of operations.
HIGH SPEED SINGLE NEEDLE INDUSTRIAL HOOKSTITCH SEWING MACHINE
MANAGEMENT
OPERATION
GEM8500
GEM8500H
GEM5590H
GEM5550V
The product is certified
Important safety instructions
6-4. Leaving the workplace, or if the workplace is not occupied.
6-5. If a frictionless motor is used, wait until it stops completely after turning off the power to the machine.
7. If oil or grease used to lubricate machines and devices gets into your eyes, or you accidentally
have swallowed these substances, seek medical attention immediately.
8. Contact with moving parts and devices, whether the power supply is on or not, is prohibited.
9. Repair, modernization and adjustment work should be carried out only
by a qualified technician or specially trained personnel. For repairs, use only standardized spare parts.
10. Commissioning and commissioning of the machine must be carried out by qualified personnel.
11. Repair and installation of electrical equipment must be carried out by a qualified electrician or under the supervision and guidance of specially trained personnel.
If you find any electrical malfunction, immediately unplug the machine and contact an electrician.
12. Before carrying out repair and installation work on a pneumatically driven machine, it is necessary to disconnect the air compressor and turn off the compressed air supply.
The existing air pressure difference after disconnecting the compressor must be eliminated. The only exception to this is adjustment and performance testing by a qualified technician or specially trained personnel.
13. Clean the machine periodically after use.
14. Always ground the machine, this is a prerequisite for its operation. The machine must be operated in an environment free from sources of noise and interference such as high frequency appliances.
15. An electrician must connect the appropriate electrical connector to the machine. The electrical connector must be grounded.
16. The machine may only be used for its intended purpose. Improper use is not permitted.
17. Modify or modify the machine in accordance with safety and safety standards.
The manufacturer does not accept any responsibility for breakdowns and damage caused by modifications or modifications to the machine.
18. The warning sign is indicated by the symbol:
Danger of injury to the seamstress and personnel
Item requiring special attention
Work safety
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To avoid electric shock, never operate the machine without a grounding conductor.
To prevent possible electric shock due to electrical malfunction, turn off the starter before connecting / disconnecting the electrical connector (plug-socket).
Pay particular attention to the electrical connection!
1. Machine connections are only made using "CE" certified control and monitoring devices.
2. Follow the instructions when installing the control devices.
3. Always ground the machine.
4. When adjusting, to prevent accidental starting of the machine, be sure to disconnect the power supply.
GEMSY Thank you and congratulations on your purchase of a sewing machine.
GEMSY. Read this carefully GUIDE
OPERATION before starting the equipment to get
maximum productivity and pleasure from working on
Before work
1. Never operate the machine if the oil pan is not filled with the recommended amount of oil.
2. After installing the machine, check the direction of rotation of the motor. To check, turn the handwheel of the machine so that the needle drops to the lower position and, observing the handwheel, turn on the power with the starter. While holding the flywheel with your hand, lightly depress the motor pedal. The flywheel should rotate “on the working”.
3. Do not use a large motor pulley in the first month of operation.
4. Make sure that the voltage and the number of phases (one or three) of your mains supply correspond to the parameters indicated on the electric motor.
Operating instructions
2. During operation, do not put your fingers on the thread take-up guard.
3. When tipping the machine and replacing the V-belt, make sure the starter is disengaged.
4. When leaving the work area, make sure the power is turned off.
5. During operation, do not allow your hands and head to touch the machine's flywheel, V-belt, winder and electric motor. Do not place anything near these moving parts of the machine. This is dangerous!
6. If your machine has a belt guard, finger guards or other safety devices, do not operate the machine without these devices.
1. INSTALLATION
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2. LUBRICATION
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accidental launch.
2. Adjusting the oil supply to the needle and thread take-up mechanism
The amount of oil supplied to the eccentric pin of the needle bar, fig. 4 and the thread take-up is adjusted by turning the pin (1). Minimum oil flow is achieved when pin (1) is turned in direction (B) so that its mark (A) is closer to the eccentric pin of the needle bar Maximum oil flow is achieved when pin (1) is turned in direction (C) so that its mark (A) was opposite to the eccentric finger of the needle bar
3. Adjustment of oil supply to the hook
The increase in oil supply to the shuttle is made by turning the adjusting screw (3), Fig. 4, installed on the shuttle shaft coupling, clockwise Å in direction (A). Reducing the oil supply to the hook is made by turning the adjusting screw (3) counterclockwise Q in direction (B).
3. INSTALLING THE NEEDLE
Caution: Turn off the power to the machine to avoid
accidental launch.
The type of needle used is DBx1. Select the appropriate needle number (thickness) for different types fabrics and thread types.
1. Turn the handwheel until the needle bar is in its uppermost position.
2. Loosen the screw (2), fig. 5 and take the needle (1) so that its small groove (A) points exactly to the right in direction (B).
3. Insert the needle (1) into the needle bar up to the stop (in the direction indicated by the bold arrow in Fig. 5).
4. Carefully tighten the screw (2).
5. Make sure the long groove (C) is facing exactly to the left in direction (D).
4. INSTALLING THE BOBBIN IN THE BOBBIN CAP
1. Take the bobbin so that the thread unwinds to your left, and insert it into the bobbin case.
2. Thread the thread into the slot (A), fig. 6 and pull it out from under the pressure spring (B) in the direction (C).
3. Make sure the bobbin rotates in direction (C) smoothly and without jerking.
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Caution: Turn off the power to the machine to avoid
Be especially careful! When starting the machine, make sure that there is sufficient oil supply to the hook.
6. ADJUSTING THE STITCH LENGTH
1. Turn the stitch length dial (1) fig. 8 in the direction of the arrow to align the desired disc number (1) with the mark (A) on the machine arm.
2. Disc (1) is calibrated in millimeters.
3. If you want to shorten the stitch length, turn the dial (1) clockwise while pressing the reverse feed lever (2). Turn the dial (1) counterclockwise to lengthen the stitch length.
7. THREAD TENSION
1. Adjusting the needle thread tension
Adjust the needle thread tension with the adjusting nut (1) Fig. 9 according to your sewing needs. Turning the nut (1) clockwise (in direction A) will increase the needle thread tension. Turning the nut (1) counterclockwise (in direction B) will decrease the needle thread tension.
2. Adjusting the bobbin thread tension
Turning the tension adjusting screw (2) clockwise
(in direction C) the bobbin thread tension will increase.
By turning the tension adjusting screw (2) counterclockwise
(in direction D) the bobbin thread tension will decrease.
8. COMPENSATION SPRING
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1. To raise the presser foot by hand and lock it in the upper position, turn the lever (1), fig. 11 in direction (A).
2. The foot will rise 5.5 mm and lock into place.
3. To return the presser foot to its original down position, turn the lever (1) downward in direction (B).
4. When using the knee lifter, the lifting height of the standard foot is 10 to 13 mm.
10. FOOT PRESSURE ON FABRIC
Caution: Turn off the power to the machine to avoid
accidental launch.
1. Loosen the nut (2), fig. 12. Turning the spring pressure regulator (1) clockwise (in direction A) increases the pressure of the foot on the fabric.
2. By turning the spring pressure regulator (1) counterclockwise (in direction B), the pressure of the presser foot on the fabric decreases.
3. After adjustment, tighten the nut (2).
4. For basic fabrics, the standard height of the spring pressure regulator (1) is 29 to 32 mm (5 kg), 7 kg for GEM8500H, -5550H, -5590H.
11. HEIGHT OF THE REIKI
1. The factory setting for the height of the rack (a), Fig. 13 above the throat plate (b) is 0.8 ~ 0.9mm. For GEM8500H, -5550H and -5590H ¾ 0.95 ~ 1.05mm.
2. Raising the bar (a) too far above the throat plate (b) may cause chafing and damage to lightweight fabrics. In this case, we recommend setting the rack lift height (a) to 0.7 ~ 0.8mm.
3. To adjust the height of the staff:
a) Loosen the screw (2) of the rocker arm (1).
b) Set the rack arm higher or lower to the desired height.
c) Carefully tighten the screw (2).
12. INTERACTION OF NEEDLE AND SHUTCH
Caution: Turn off the power to the machine to avoid
accidental launch.
1. Adjusting the height of the needle bar
1. Turn the handwheel of the machine so that the needle bar, fig. 14 is in its lowest position, and then loosen the screw (1).
2. For needles typeDB: Align the notch (A) of the needle bar with the lower end of the bushing (3), then tighten the screw (1).
For needles typeDA: Align the notch (B) of the needle bar with the lower end of the bushing (3), then tighten the screw (1).
2. Adjusting the hook position
1. For needles typeDB: Loosen the two setscrews of the hook (a) and turn the handwheel of the machine so that when raising the needle bar, the notch (C) aligns with the lower end of the bushing (3).
2. For needles typeDA: Loosen the two hook setscrews (a) and turn the handwheel of the machine so that when raising the needle bar, the notch (D) aligns with the lower end of the bushing (3).
3. After making all the above adjustments, align the nose (5) of the hook (a) with the center of the small groove of the needle (4). Allow 0.04 ~ 0.1mm clearance between the hook point and small groove of the needle, then carefully tighten the two hook setscrews (a).
* When replacing the hook, check the spare parts list:
No. BA0 (1109259 for GEM8500H, -5550H and -5590H).
13. ADJUSTING THE FEEDMATERIAL
1. Loosen the screws (2) and (3), fig. 15 of the feed eccentric (1). Turn the feed eccentric (1) in the direction of the arrow (or opposite) and tighten the screws (2) and (3) firmly.
2. In a standard setting, the top of the rail and the top of the eye of the needle are in line with the top of the needle plate when the rail is lowered.
3. To extend the feed time to prevent uneven material advance, turn the feed eccentric (1) in the direction of the arrow by the required amount.
4. To delay the fabric feed in order to achieve the highest stitch strength and density of stitches, turn the feed eccentric (1) in the opposite direction of the arrow.
* Be careful: if you turn the eccentric too far, there is a danger of needle breakage.
14. ADJUSTING THE HEIGHT OF THE FOOT ROD
Caution: Turn off the power to the machine to avoid
accidental launch.
1. Turn the handwheel of the sewing machine so that the rack comes down under the throat plate. Lower the presser foot and loosen the set screw (1), fig. 16. Under the action of the pressure spring, the bar of the foot will take its lowest position and eliminate the gap between the sole of the foot and the needle plate, if any. If the line of movement of the needle does not coincide with the center of the slit or hole of the foot, turn the bar of the foot to the required amount.
2. After making the above adjustments, tighten the screw (1).
15. ADJUSTMENT OF THE THREAD GUIDE
1. When sewing heavy fabrics, move the thread guide fig. 17 to the left in the direction of the arrow (A). This will increase the length of the thread fed by the thread take-up.
2. When sewing lightweight fabrics, move the thread guide to the right in the direction of the arrow (B). This will shorten the length of the thread fed by the thread take-up.
3. In the standard setting, the thread guide is secured with its mark (C) aligned with the center of the set screw.
16. ADJUSTING THE HEIGHT OF THE KNEE LIFT
1. The standard foot lift when using the knee lifter is 10 mm.
2. You can adjust the foot lift up to 13 mm using the screw (1), fig. 18.
3. If you set the presser foot to a height greater than 10 mm, make sure that the lower part of the needle bar, fig. 19, in the lowest position, does not come into contact with
foot (3).
17. INSTALLATION OF THE DRIVE BELT COVER AND THE REELER
Caution: Turn off the power to the machine to avoid
accidental launch.
1. In the table, drill two holes (A) and (B), fig. 20, for the supplied screws.
2. Fasten the coiler (6) to the table with screws and washers in holes (A) and (B).
3. Screw the support (1) of the cover into the threaded hole of the machine arm.
4. The drive belt cover can be of two types - collapsible and one-piece. The collapsible casing consists of two main parts - front (4) and rear (5). Install the front part (4) first, securing it to the machine arm through the gasket (2) with the screw. Then install the flywheel with belt as shown in fig. 20.
5. Through the gasket (3), use the screw to secure the rear part of the casing (5). Make sure that the belt, winder wheel and flywheel do not touch the guard while rotating.
6. Install and secure the one-piece casing (3), fig. 21 as shown in fig. 21. Make sure the belt, winder wheel, and flywheel do not hit the guard as they rotate.
18. SPECIFICATION
GEM8500 GEM5590 GEM5550 GEM5550B | GEM8500H GEM5590H GEM5550H |
|
Application | For medium materials | For heavy materials |
Sewing speed | 5500 sti / min | 3500 sti / min |
Stitch length | 5 mm maximum |
|
Presser foot lift (knee lifter) | 13 mm maximum |
|
New Defrix Oil No.1 or I -20A, IGP -18 |
19. ELECTRIC MOTOR PULLEYS AND DRIVE BELTS
The standard engine of the machine is a 400 W friction electric motor with a voltage of 220/380 V and a rotor shaft speed of 2850 rpm. Should apply V-belt type M. The relationship between the motor pulley diameter, belt length and sewing speed is shown in the following table:
Electric motor pulley diameter | Motor pulley code | Sewing speed (sti / min) | Drive Belt Length (inches) | Drive belt code |
|
· The effective diameter of the motor pulley is equal to the outer diameter minus 5 mm.
· The motor pulley must rotate counterclockwise when viewed from the flywheel side of the machine. Be careful not to let the pulley rotate in the opposite direction.
Specifications marked with * ¾ for models GEM8500H, GEM5590H, GEM5550H
With and increased stitch length. This model designed to work with light to medium fabrics. The stitch length is adjustable from 1 to 5 mm. The installation step is 0.5 mm. Maximum speed sewing - 5,000 sti / min.
Minerva M5550-JDE is manufactured under license from the German company Dürkopp-Adler, on a similar mechanical base, with identical component quality and excellent build quality. The sewing machine is equipped with a quiet built-in servo motor with energy-saving Eco-Drive ™ technology. High-quality electronics ensure quick start and precise stop of the main shaft for stable and smooth sewing. The control panel is built into the head of the machine. The lubrication system is an open oil sump with an automatic oil pump. For productive work of a seamstress, there are: needle positioning options, a smooth start function, a function for setting sewing speed limits, an LED-illuminated work area and a built-in bobbin winder. In the needle bar area there is also a button for adding a single stitch.
Speed regulation
By equipping the machine with a servo motor, it is possible to flexibly set the sewing speed. The minimum starting speed is 300 rpm. The motor speed is regulated by 100 revolutions. With the function of setting the sewing speed limits, it is also possible to set the range of the motor speed, and by pressing the start pedal, the servo motor will only move within the preset numbers.
Smooth start
The soft start function allows you to start sewing smoothly and gradually increase the sewing speed. To do this, activate the appropriate option on the control panel and set the number of initial stitches that will be performed at minimum engine speed
Economical servo motor
Modern servo drive
Newest technologies noise reduction and a modern servo-drive built into the head of the machine have reduced the level of vibration and noise by 50% in comparison with industrial sewing machines of this class. In turn, the energy-saving Eco-Drive ™ technology saves up to 450 kWh * of electricity annually
Integrated panel
A convenient control panel is built into the head of the sewing machine, allowing you to make all sewing settings in one place, including setting the motor speed and soft start functions
Adding a stitch
Adding a stitch
This option allows you to add a stitch at the desired position of the stitch with just one touch of a button. The function will be useful when sharpening small parts and finishing the seam.
Versatility
The increased comb stroke and the possibility of adjusting the lifting height and the angle of inclination of the feed teeth, allows you to easily debug the material advance mechanism for sewing various types of light and medium fabrics, with the same high stitch quality
LED backlight
LED backlight
The built-in LED light is conveniently positioned directly above the needle bar, providing excellent illumination of the entire working area. Adjustment of brightness of illumination in two positions is available
Built-in bobbin winder
The winding device is practically integrated into the head of the sewing machine, allowing preparatory work by winding the thread onto the bobbins as quickly as possible. The bobbin winder is powered by a servo motor. A thread trimming knife is also provided
Automatic lubrication
Minerva M5550-JDE is equipped with new system lubricants with an automatic oil pump, which provides a fast supply of oil to the friction units in the minimum amount required for high-speed operation. Removable oil filter reliably removes dust, keeping oil clean
Automatic lubrication
Minerva M818-JDE is equipped with a new automatic oil pump lubrication system that provides fast oil supply to friction units in the minimum amount required for high-speed operation. Replaceable oil filter reliably removes dust, keeping oil clean
