There are several problems using the button machine when skipping

​There are several problems using the button machine when skipping

The button binding machine is a special automatic sewing machine. It can finish sewing with regular button buttons and sewing with nail and drip, such as nail marks, labels, buttons and so on. The reasons lead to nail machine skipping is very complex, the author only brother LK3-438 button sewing machine as an example, and the elimination method for the following analysis on the causes of the nailcatcher machine skipping, reference.

1. check machine needle whether hair, blunt and crooked phenomenon. If you have the above phenomenon, you should change the needles in time. Machine needles are generally TQ1, TQ7, DP17, etc., according to fabric and buttons to choose different specifications and models of the needle.

The 2. frame and the take-up spring tension is too large. The tension should be consistent with the tension of the shuttle. LK3-438 nail button machine has two clamps on the top and bottom. Generally, the clamping device should not be too tight. If it is too tight, the thread on the machine pinhole will be short after the stop. It will cause off-line; if it is loose, the line will be long. The size of the tension of the wire clamping device under the main control plane line, generally 50 grams.

3., check the shuttle spindle tip whether there is hair, blunt phenomenon, if there is such a phenomenon, should be repaired or replaced in a timely manner, the new pendulum.

4. check whether the hook of the shuttle is too early. Methods: to adjust the needle bar in the bottom dead center, shuttle needle tip and the center line of the left side with 3 mm margin, the needle lifting 2.5 mm, shuttlepoint right in the center line of the needle tip in the machine spindle at this time, the needle at the margin of 2 mm. Before and after the space shuttle tip and needle is 0.1 mm, the gap is too small will jump the needle, broken needle (Figure 1).

5. check whether the clip is worn, such as New York clip around shake, should promptly change the New Zealand clamp.

6. check whether the swing time of the clip is too fast or too slow. The adjustment method: open the head, 3 positioning screws to loosen the cloth around, moving slightly send wheel, make the needle tip in ascending clockwise 10 mm left button, button clip began to swing; clockwise close button down tip 10 mm when the new clip should stop swinging.

7. check whether the swing of the clip fits the button hole and whether the needle is at the center of the button hole. If not, swing width should be adjusted again.

The 8. round buckle under the presser foot is under the pad of paper, if it is under the foot pad of paper will use loose wire hook, because the pressure of the foot pad of paper machine sewing ring will affect the stable and easy to cause skipping.

9. brothers LK3-438 nail button machine, relative heavy machine, 1852 nail button machine in the structure of a certain difference. Brother LK3-438 button sewing machine in practical application, it is easy to occur when the phenomenon of needle stitches is not on the line, because the board is not stable will be allocated to dial the bottom line, to cut the line after line parking allowance is low, but in the second needles, not on the bottom line. Through careful study, the author in the dial plate is improved, the effect is very good, not a few needle needle on-line phenomenon significantly reduced.