Embroidery machine able to sew cord material

Abstract

In the present invention, an embroidery machine has a needle bar case (5) provided with a plurality of needle bars (3). When a main shaft (6) is rotated by a main shaft motor (first drive source) (60), the needle bars (3) are lift-driven and a known sewing operation is carried out. Lifting bars (15) are supported in the needle bar case (5) so as to respectively correspond to the needle bars (3), and each lifting bar (15) is lift-driven by a motor (second drive source) (16). As a substitute for a known fabric pressing body (18), at the lower end of the lifting bars (15) a cord guiding body (20) is attached that guides a cord material (27) above an object-of-sewing material. By changing the lifting stroke of the lifting bars (15), cord sewing or loop sewing of the cord material (27) is selectively carried out. Due to this configuration, it becomes possible to selectively carry out cord sewing and loop sewing of the cord material using a simple configuration.

Description

technical field [0001] The present invention relates to an embroidery sewing machine capable of sewing a cord material to a workpiece. Background technique [0002] Among the methods of sewing a decorative cord material to a workpiece, there are loop sewing in which the cord material is formed into a loop state and sewn to the workpiece, and bonding along the workpiece. Cord-sewing in which the cord material is sewn in the same way. Currently, when performing loop sewing and thread sewing, it is necessary to install a dedicated guide device respectively. Therefore, in order to change these sewing from one to the other, it is necessary to remove the above-mentioned guide device, and the work efficiency is poor. In order to solve such a problem, as in Patent Document 1, there is proposed a guide device that can be used both for loop sewing and thread sewing. [0003] The guide device of Patent Document 1 is configured to be attached to the end of the head frame, and is conf...

AI Technical Summary

Problems solved by technology

[0004] However, the guiding device itself of the guiding device of Patent Document 1 has a complicated mechanical mechanism

Therefore, in the technique of Patent Document 1, there is a problem that it is necessary to attach the guide device having such a complicated mechanical mechanism to the sewing machine.

In addition, since the guide device of Patent Document 1 is configured to be attached to one end of the head frame, the needle bars that can be used for sewing cord materials are limited to one needle bar located at the end to which the guide device is attached.

In this current structure, only one guide device can be installed on each of the left and right ends, and a total of two guide devices can be installed on the head frame. As a result, only two kinds of cord materials can be sewn together at most.

In addition, in order to change the height of the loop sewing, it is necessary to perform a mechanical adjustment operation of rotating the adjustment bolt, and the adjustment requires man-hours.

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