Bottom shuttle replacing method

Abstract

The invention discloses a bottom shuttle replacing method. The bottom shuttle replacing method comprises the steps of taking out a first shuttle casing from a shuttle table of a sewing machine base and installing a standby second shuttle casing in the shuttle table; taking out a first shuttle peg from the replaced first shuttle casing, cutting off a bottom line connected between the first shuttle peg and the first shuttle casing and reserving a remaining line on the first shuttle casing; removing the bottom line left on the first shuttle peg, winding a new bottom line fully and connecting the newly-wound bottom line to the remaining line on the first shuttle casing; installing the first shuttle peg into the first shuttle casing for standby. The whole shuttle replacing steps are simplified, the shuttle replacing efficiency is improved, automatic operation is facilitated through various mechanisms, the steps of taking the shuttle casings and the shuttle peg of the bottom shuttle of the sewing machine, winding the line on the shuttle peg, installing the shuttle peg into the shuttle casing, installing the shuttle casing into the shuttle table and the like can be automatically achieved, accordingly automatic bottom line replacement of the sewing machine is achieved, the trouble that a specially-assigned person monitors the operation is avoided, and the labor cost is reduced.

Description

technical field [0001] The invention relates to a sewing machine, in particular to a method for replacing the bottom shuttle of a sewing machine. Background technique [0002] A bobbin case is arranged in the base of the sewing machine, and a bobbin case is installed in the bobbin case. Because industrial sewing machines usually work non-stop, and the amount of winding on the bobbin is very small, the bobbin thread on the bobbin will run out every once in a while, so it is necessary to arrange for a special person to take care of and replace the bobbin with the bobbin thread wound. [0003] Patent name: Device for replacing the bobbin used for looping thread on sewing or embroidery machines, Patent No.: 200580011462.2 discloses a shuttle changing device, by grasping the bobbin case cover on the bobbin case, the Shell out. A plurality of spare bobbin cases are arranged in sequence, and each bobbin case is equipped with a bobbin that is fully wound with the bottom thread. T...

AI Technical Summary

Problems solved by technology

The entire operation process of taking out the bobbin from the bobbin case, replacing the bobbin thread on the bobbin, and putting the bobbin into the bobbin case is very cumbersome, especially when the bobbin is installed in the bobbin case, it is necessary to find the end of the bobbin thread on the bobbin, and then insert it into the bobbin case. The end of the thread is stuck into the seam of the bobbin case, and the end of the thread is passed through the thread hole on the bobbin case. This operation step can only be realized manually, resulting in low efficiency of bobbin replacement

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