Machine maintenance
Fold the cleaning method
(1) of the feed dog clean: remove the needle and feed dog between the screw, remove dust cloth, MAO, and add a small amount of sewing machine oil.
(2) the spindle bed cleaning: spindle bed is the core of the sewing machine work, is also the most prone to failure, therefore, to remove all dirt and often add a small amount of sewing machine oil.
(3) other parts of the cleaning, the surface of the sewing machine and panel, each part should be regularly swept clean.
The sewing machine lubrication methods:
(1) gas parts: on the position of oil hole on the head, lubrication on the shaft and the shaft connected components; Panel of parts and components connected moving parts; Lubrication presser foot and needle bar and the components connected to the; Machine board wipe and the lower parts of activities and less oil.
(2) maintain the sewing machine should note: after the completion of the work, insert the needle pinhole plate inside, raise the presser foot, but also cover the nose, with hood with dust crumbs; Began to work, the main parts of the check, stepping up weight, the special voice, needle is normal, and so on, if find abnormal phenomenon, should be timely maintenance; Machine use after quite a long time, want to undertake a major overhaul, if discover wear large parts, need to change a new one.
Fold the lubrication
Must use a special sewing machine oil. Sewing machine after one or more days of continuous use should be a full filled, if in use between refueling, should make idling at a time, make the oil fully infiltrates and flung out the excess oil, again with a clean soft cloth to the nose and mesa clean, lest flyblown sewing the material. And then thread made sewing cloth, the use of the movement of the sewing thread rub-up, flung out redundant grease stain, until there is no oil rags, an official sewing again.
Folding refueling parts
(1) the position of oil hole on the head, the shaft and the shaft is connected to parts of the lubrication.
(2) the internal components of the panel and the connection of different parts of moving parts. Lubrication presser foot and needle bar and connected components.
(3) the machine plate wipe and the lower parts of activities and less oil.
The gas hole and gas parts amount to need not too much, just a little drops.
Fold the maintenance
Second, maintain the sewing machine also should pay attention to the following:
1. After the completion of the work, insert the needle pinhole plate inside, raise the presser foot, but also cover the nose, with hood with dust intrusion.
2. When you start work, the main parts of the check, stepping up weight, the special voice, needle is normal, and so on, if find abnormal phenomenon, should be timely maintenance.
3. The machine use after quite a long time, want to undertake a major overhaul, if discover wear large parts, need to change a new one.
Folding editor this period of common problems
(1) irregular cloth around
In the process of using sewing machine sewing cloth, sometimes appear uneven material movement speed, stitch length short irregular phenomenon. Cloth around all by feed dog and the matching of the presser foot forward transmission, therefore, when the cloth in the irregular movement, can be concluded that happens is a fault in the teeth and press foot or improper pressure regulation. For example, presser foot pressure is too small. Pressure is not tight fabric, can cause irregular. At this time as long as the pressure regulating screw twisted down to pressure material. Presser foot is too high, can't pin material, can also cause material any move, or no, adjust the presser foot first when the spanner is raised, loose screw channel, the presser foot lever by moved down again, make the distance of the presser foot and needle plate after adjustment to a height of 7 to 8 mm, then the screw, again using the drive.
There is a reason, because of loose screw teeth and cause tooth shakes when working, make cloth can't regularly to move forward. The processing method is to unload the needle plate. Screw the two teeth. Tighten the needle plate after installed, check the teeth on both sides, whether with needle plate groove edge friction, such as friction, will cause noise and machine weight phenomenon, then only then discharge needle plate, loosen the screw teeth, the tooth position adjustment to the center of the needle plate groove, tighten the screw teeth, put a needle plate.
(2) material don't move forward
Cloth of walking on teeth all transfer. When there is a cloth don't walk about, only on the teeth to find fault. If tooth position is too low, cloth is unable to move forward. Adjust to turn head, will lift shaft crank screw loosening, then braces carried gently with the screwdriver, make to feed dog. The needle plate 0.8 1 mm. The standard size of teeth is high and low, as long as the adjustment to this location, cloth can walk normally. Finally, the screw. When screw. Also want to turn head.
(3) material go back and forth
Sewing cloth, pacing back and forth often there will be material, also is to take a step forward, and to take a step back. This is caused by high feed dog, needle teeth plate surface is too high, teeth always reciprocating movement on the outside of the needle plate, pacing back and forth in cloth. Adjust the lift shaft crank screw loosening, teeth with screwdriver down light pressure, reduce feed dog to the standard height, namely the teeth the size of the needle plate 0.8 1 mm, then tighten the crank screw.
(4) material back
In sewing work towel sometimes material not moving forward, to the operator direction instead, namely material back. This failure is due to the crank shaft eccentric CAM with screw in the right perspective. With rhythm, the teeth so to be able to move forward. It is by the feed CAM limit. Because of the CAM itself is eccentric. So make the forks before and after the strike, and the forks and drive the feed axis and braces, prompting teeth before and after the reciprocating motion. Thus, the eccentricity of the CAM position is very important.
Crank shaft screw CAM with the standard point of view. As long as the screws and the crank shaft Angle on CAM to the position of 260-300, material is not backward.
Adjustment, to head back cover downward pull open, you can see the feed CAM, screwdriver inserted into the chassis, internal will feed CAM screw loosening, and then put the screw to and the location of the crank shaft into a 260-300, then tighten the CAM screw.