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2022
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04
Embroidery Defects Caused by the Computerized Embroidery Machine Shuttle, Along with Common Malfunctions and Troubleshooting Tips
I. Uneven Embroidery Caused by the Rotary Hook in Computerized Embroidery Machines When unevenness or poor uniformity occurs in embroidery produced using a computerized machine, it may be due to the following factors:
1. Uneven Embroidery Results Caused by the Rotary Hook in Computerized Embroidery Machines
When computer embroidery results in poor stitching quality and low uniformity, it may be caused by the following factors:
1. Uneven tension in the embroidery thread and base thread
--- Use the top thread tension gauge (top thread tension meter) or the bobbin thread tension gauge (bobbin thread tension meter) to adjust the tension of both the embroidery top thread and bobbin thread, ensuring they are balanced.
2. Uneven pulling of embroidery thread
--- Evenly pull out the embroidery thread
3. Wear on the Upper Tension Aluminum Device
--- Replace the aluminum unit
4. Broken or weakened adjustment spring in the embroidery machine shuttle
--- Replace the spring
5. Uneven Wear of the Bobbin in the Embroidery Machine
--- Replace the bobbin
6. Wear of the tension spring in the embroidery machine shuttle case
--- Replace the tension spring
7. Timing of the shuttle head and embroidery needle movement in the embroidery machine
--- To synchronize the timing of the shuttle hook and embroidery needle movements in the embroidery machine
8. The distance between the base and the finger press is too small.
--- Adjust the base and finger pressure spacing to a suitable distance
9. Misalignment between the base and the crochet hook
--- Note the synchronized movement of the base and crochet hook
10. Insufficient hook lubrication
--- Regularly lubricate the hook.
2. Thread Breakage on the Embroidery Surface Caused by the Rotary Hook in Computerized Embroidery Machines
1. The threading method for the embroidery machine's upper thread is incorrect.
--- Thread the needle using the correct threading method
2. The tension of the embroidery machine's upper thread is too tight.
--- Adjust the embroidery machine's upper thread tension to the appropriate setting
3. Improper needle selection for embroidery—resulting in bent, overheated, or overly dull needles
-- Replace with the appropriate embroidery needle
4. The bobbin case pin of the computer embroidery machine is defective.
--- Replace the bobbin case pin
5. The hook and embroidery needle are out of sync.
--- When operating the embroidery machine, pay attention to synchronizing the hook and the embroidery needle.
6. The distance between the base and the finger press is too small.
--- Adjust the base and finger pressure spacing to a suitable distance
7. Misalignment between the base and the crochet hook
--- Pay attention to the synchronized movement of the base and the crochet hook
3. Thread Breakage in Embroidery Caused by the Rotary Hook of Computerized Embroidery Machines
1. The bobbin tension in the embroidery machine is too tight.
--- Adjust to the appropriate line tension using a baseline tension meter (baseline tension gauge)
2. Incorrect thread threading in the shuttle shell of the computerized embroidery machine
--- Use the correct threading method to thread the wire
3. Uneven wear of the computer embroidery machine shuttle bobbin, resulting in damage to the bobbin or poor bobbin quality.
--- Grind the bobbin smooth, repair it, or replace it with a new one
4. Damage to the shuttle shell of the computerized embroidery machine bobbin case
--- Minor damage can be repaired—please proceed with repairs whenever possible. If repair is not feasible, replace the bobbin case.
4. Skipping Stitches Caused by the Rotary Hook in Computerized Embroidery Machines
1. The distance between the embroidery needle and the tip of the shuttle is incorrect.
--- Adjust the embroidery needle and bobbin to the appropriate distance
2. The embroidery needle is out of sync with the hook
--- Synchronizing the movement of the embroidery needle and the hook
3. Tip of the shuttle damaged
--- Sharpening the shuttle head or replacing the rotary hook on a computerized embroidery machine
5. When the computerized embroidery machine's rotary hook begins stitching, the thread slips out of the needle.
1. The bobbin case of the rotary hook on the computerized embroidery machine has insufficient bottom thread.
--- Adjust the baseline to a passable level
2. The computer embroidery bobbin thread tension is too tight, while the top thread tension is too loose, causing the bobbin to rotate unevenly.
--- Adjust the thread tension to an appropriate level using the tension meter, while also verifying that the threading is correct.
6. Needle Breakage Caused by the Rotary Hook in Computerized Embroidery Machines
The bobbin case was inserted incorrectly, causing the needle to pierce the bobbin tip—indicating that the needle and bobbin head were not properly synchronized.
--- Ensure the bobbin case is inserted correctly, leaving an appropriate gap between the bobbin and its core. This prevents the needle from directly piercing the tip of the rotary hook on the computerized embroidery machine, allowing the embroidery needle and rotary hook head to work in perfect synchronization.
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