How to solve the problem when the Jumbo bag sewing machine fails?

Although the structure of the Jumbo bag sewing machine is somewhat the same as that of the ordinary sewing machine, it will still be quite different after careful understanding.

So can we solve the problem ourselves if there is a malfunction in the process of using the sewing machine? In fact, it is OK. We can solve some minor problems by ourselves. Following is an edition to sort out the five common faults. The solution is very simple. You can try to solve them by yourself.

1. Jumbo bag sewing machine stops abruptly during sewing and the hand runner is heavily lagged.

Possible causes of failure: long-term operation of sewing machine at low speed; Overheating of the machine may cause the power supply of the motor to turn off automatically.

Solution: Turn off the power and wait 20 minutes, the safety device will restart and the sewing machine will be ready to start working.

2. Do not take the needle

Reason: Press the foot not down; The shuttle shaft is not in the correct position.

Solution: Replace the empty spool and recognize the needle; Lower the foot; The shuttle shaft is pressed to the bottom and returned to the left; Lower the eyebolt.

3. Jumbo bag sewing machine stops

Reason: Pressure foot mismatch or machine needle impact pressure foot; The machine needle falls off and clips in the hook needle.

Solution: Replace pin; Take out machine needle and fit new needle.

4. Surface thread breakage

Cause: improper wire connection, knotting, and excessive tension; The needle is bent, blunt, or has sand holes; Needle size and type are not suitable; Improper needle placement; Improper needle thread coordination; The initial sewing speed is too fast; Threading without thread take-up.

Solution: Go online again normally to eliminate knotting on the line; Adjust the thread clamp pressure and replace the needle; Replace the needle of an appropriate size; Properly place the needle; Change thread or needle; Start the sewing machine at medium speed; Check the online steps.

5. Broken bobbin thread

Cause: The shuttle core is not completely inserted into the shuttle shell; The bobbin core is wound by a thread; The shuttle core does not run smoothly in the shuttle housing; There is yarn in or on the shuttle.

Solution: Carefully reinstall the shuttle core into the shuttle housing; Arrange the bobbin case outgoing line; Check that the shuttle core may be damaged; Clean the shuttle shell and shuttle core.