How To Make The Machine Move Smoothly With Sewing Materials

< p > this paper provides a variety of failure causes and provides an effective solution to the problem of "poor material flow" in sewing process during the sewing process, such as sluggish delivery of materials, shifting and shifting of sewing materials.

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< p > < strong > /strong > < a > href= > http://www.91se91.com/news/ > strong > seam > /strong > /a > strong > back and forth > /strong > < > > > > > /strong > /a > strong >

< p > when we operate sewing machines to sew up sewing materials, we often have to sew material back and forth. That is to say, one step forward and one step backward.

This is caused by sending a href= "http://www.91se91.com/news/index_c.asp" > < /a > teeth too high, so that the teeth are exposed to the high level of the needle plate, and the teeth always appear outside the needle plate to move back and forth, causing the material to move back and forth.

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< p > adjustment method: when adjusting, we unscrew the lifting crank screws and press the teeth down with the screwdriver to reduce the delivery teeth to the standard height, that is to say, the size of the dental plate is 0.8 mm -1 mm, and then tighten the crank screws.

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< p > < strong > seam material does not move forward < /strong > < /p >

< p > the movement of seam material is pmitted by tooth.

When the sewing material does not move at all, we only need to find faults on the teeth of the cloth feeding teeth.

If the tooth position is too low, it is impossible for the sewing material to move forward.

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< p > specific adjustment method: when adjusting, we first turn the machine head up, release the crank screw and lift the tooth rack with a screwdriver gently, so that the upper teeth can be exposed 0.8 mm -1 mm upward.

The gap shown here is the standard size of the teeth. As long as the position is adjusted, the material can move normally.

Finally, we tighten the screws and screw the machine up when we screw the screws.

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< p > < strong > irregular seam movement < /strong > < /p >.

< p > during the sewing process of sewing machine, irregular movement of sewing material and uneven length of stitches sometimes occur.

The sewing material is moved by the mating of the feeding tooth and the presser foot. Therefore, when the seam is in irregular motion, we can conclude that the teeth and presser foot are malfunctioning or the pressure is not properly adjusted.

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< p > for example, presser foot pressure is too small.

If the pressure is not tight, < a target= "_blank" href= "http://www.91se91.com/" > cloth > /a >, it will cause irregular movement. At this point, we just turn the adjusting screw down to compress the seam material.

For example, the presser foot is too high to press the seam material, which will cause the material to move around or not move at all.

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< p > adjustment method: when adjusting, we first lift the foot wrench, release the guide screw, then press the foot bar up and down, so that the distance between the presser foot and the needle plate is adjusted to 7-8 millimeters, then tighten the screws and then use it again.

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< p > in addition, the author analyzes another reason, which is due to loosening of the teeth and the shaking of the teeth when running, so that the sewing materials can not move forward regularly.

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< p > the processing method is to unload the needle plate and tighten the two teeth screws.

After tightening, we install the needle plate and check whether the sides of the teeth are rubbed with the edges of the needle slot. If there is friction, it will cause noise and machine weight. At this time, the needle plate must be unloaded again, the teeth screws should be loosened, the position of the teeth should be adjusted to the middle of the needle slot, and then the needle plate should be tightened after tightening the tooth screws.

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< p > < strong > seam material backward, < /strong > < /p >

< p > < < a href= > http://www.91se91.com > sewing > /a >, sometimes the seam material does not move forward, but moves toward the operator direction, that is, the seam material is backward.

This failure is due to the misalignment of the upper axle crank and the cam eccentric screw.

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< p > the movement of the teeth of the cloth feeding mechanism can be moved forward in a rhythmic manner, entirely by the toggle of the feeding cam.

Because the cam itself is eccentric, it makes the fork move back and forth, and the fork drives the cloth axis and rack to make the teeth move back and forth.

It can be seen that the eccentric position of the cam is very important.

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< p > standard angle of upper axle crank and cam screw.

As long as we adjust the angle between the cam screw and the upper crankshaft to 260 degrees -300 degrees, the material will not go back.

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< p > adjustment method: when adjusting, we turn the rear cover of the machine down to see the delivery cam, insert the screwdriver into the inside of the casing, release the cam screw, then turn the screw to the 260 degree -300 degree with the upper axle, then tighten the cam screw.

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