The problem of fabric being rolled into the flower wheel when using an ultrasonic lace machine may be caused by multiple factors. One possible reason is the presence of burrs in the mold, which may carry the fabric into the flower wheel.

To address this issue, the following measures can be taken:
1. Check the mold: Regularly inspect the mold to ensure its surface is smooth and free of burrs. If burrs are found on the mold, they should be cleaned and repaired in a timely manner to avoid the fabric being rolled into the flower wheel by the burrs.

2. Adjusting fabric tension: Excessive or insufficient fabric tension can cause the fabric to be rolled into the flower wheel. Therefore, the tension of the fabric should be adjusted appropriately according to its type and thickness to maintain it within an appropriate range.

3. Adjusting the position of the flower wheel: Improper adjustment of the flower wheel position may also cause the fabric to be rolled into the flower wheel. Ensure that the distance between the flower wheel and the fabric is appropriate and avoid being too close or too far.

4. Use appropriate ultrasonic power: Excessive ultrasonic power may cause the fabric to be excessively vibrated and entangled in the flower wheel. Therefore, the appropriate ultrasonic power should be selected based on the type and thickness of the fabric.

If the above measures still cannot solve the problem, it is recommended to contact the manufacturer or professional maintenance personnel of the ultrasonic lace machine for more professional assistance and solutions.