What problems will the quilting embroidery machine encounter in operation? Let us introduce:
Stitch skipping: The skipping stitches of the quilting embroidery machine will skip stitches when the needle is zigzag, or if the operator turns the needle back, the needle will skip if the hook tip is too far away from the concave surface of the needle. Correspondingly adjust the gap between the tip of the hook and the concave surface of the needle to 0.05mm. If the thread clamp and thread take-up spring are too tight, the amount of thread will be too small and the thread will jump. Adjust the tension of the thread clamp and thread take-up spring accordingly. In the long-term sewing, if the tip of the hook is worn or damaged and the thread cannot be hooked, and the thread jumps, replace the hook with a new one. In addition, when sewing the wrap strip on the knitted garden collar, the needle used is 9# imported needle, which is also a high-low fabric sewing product, due to its thick thickness. However, the process requirements can not use the 11# needle, because the needle hole is large, the needle bar can be adjusted downward by 0.2MM, which can increase the thread output, the hook thread hook direction is when the needle bar rises, and the hook tip is above the needle hole When the thread is hooked in the 0.1MM position, the loop is the largest simple hook thread from this time, which can solve the problem of stitch skipping.
Cross-section thread: first check whether each thread path through which the upper thread passes is not threaded wrongly, check whether the needle is zigzag, whether there is a burr in the needle hole, if there is a cross-section thread, replace the needle, the quilting embroidery machine is in a long-term In the sewing process, the threading hole of the thread take-up lever has a groove to make the thread path not smooth and the thread is broken. Check whether the needle plate hole leaves too many needle marks after the needle is broken, and the needle plate hole has burrs and the thread is broken. Whether there is concave burr on the hook positioning hook, use a small garden file to file off the burr, polish the groove and burr surface with sandpaper or cloth strips, and check whether the screw head on the bobbin case is too long. It is easy to bring screws and cross-section lines are easy to occur. Replace large and small screws, such as the new hook, the groove of the hook and the small gap of the inner hook. The thread and the cross-section line formed by burrs, use abrasive paste to grind and solve Problems with thread clamping and cross-section.
Broken needle: first check whether the needle is bent to form a needle plate and break the needle, then check whether the needle and the needle plate hole are offset to form a broken needle, adjust the position of the needle plate and the tooth frame so that the needle is in the center of the needle plate hole When the fabric is thick and the needle is small, if the needle is small when the fabric is folded, the needle will be broken when the needle is small, replace the corresponding needle, check whether the feeding is too early or too late, the needle may also be broken, adjust Synchronization of the feed cam and the needle. Debugging method: turn the needle point of the machine to the needle plate. When the tooth is fed to the bottom, it is aligned with the plane of the needle plate. Check whether the position of the rotary hook is misaligned to form a broken needle. Adjust the gap between the rotary hook and the concave surface of the needle. 0.05mm gap, check if the needle bar is placed too far, simply make the needle and the bobbin break the needle, adjust the height of the needle bar, take the scale on the needle bar as the standard, or check whether the bobbin is deformed and replace Bobbin.
Broken bottom thread: Check whether the fit between the bobbin case and the bobbin is too tight. If the bobbin is deformed too tightly, it will also cause a broken bottom thread. You have to replace the bobbin. Check whether the bobbin case on the bobbin has a groove after being used for a long time. When a knife edge occurs, the bottom thread will be broken when the thread is exited, so it is necessary to replace the bobbin.
Noise: There are many reasons, such as: long-term vibration causes the screw to loosen, the small amount of oil creates a large gap in the bevel gear, the noise announced by the wear of the feeding cam after long-term use, the large gap between the needle bar connecting rod and the needle bearing, the needle bar There is a gap between the upper and lower sleeves of the needle bar, the large gap between the rotary hook and the inner rotary hook, etc., which can cause noise. Check whether the screw is loose or listen carefully to the sound of the announcement. If the parts are worn out, it is necessary to replace the parts.