A clamping structure in an automatic threading device of an industrial sewing machine

Abstract

The invention provides a thread clamping structure in an automatic threading device of an industrial sewing machine, which belongs to the technical field of sewing machines. The utility model solves the technical problems such as low threading automation degree of the existing industrial sewing machines, long remaining thread ends and the like. The industrial sewing machine includes a casing. The clamping structure includes a clamping housing and a clamping end cover. The clamping housing is fixed on the side of the housing. The clamping end cover is connected with the clamping housing through an axial screw. The outer end of the wire housing and the inner side of the wire clamp end cover are arranged at intervals relative to each other. The middle part of the wire clamp housing has a wire clamp shaft. The wire clamp shaft and the wire clamp end cover are connected through the wire clamp core. An electromagnet moving in the axial direction, a moving knife is fixed on the lower side of the thread clamping end cover, and a fixed knife coordinating with the moving knife for thread cutting is provided on the thread clamping housing. The clamping structure of the present invention accurately and reliably realizes the locking of the suture, and can ensure that the length of the suture head remains consistent after each threading.

Description

Technical field [0001] The present invention belongs to the field of sewing machine, and involves an automatic threading device for industrial sewing machines, particularly a sandwich structure in automatic wire-threading devices in industrial sewing machines. Background technique [0002] The sewing machine is used in one or more sewing threads, and one or more straces are formed on the sewing material, and the one or more layers are sutured or stitched. There is no automatic threading device on the current industrial sewing machine. Under the circumstances of disconnection, break, etc., it needs to be manually threaded, and it is expected to have a lot of people who have poor vision or older people. [0003] At present, there are also some home sewing machines, such as some of the sewing machines, usually, the automatic threading devices on such sewing machines can be divided into two categories: a class is simple, but the degree of automation is also relatively low. This type ...

AI Technical Summary

Problems solved by technology

[0006] In the threading device for sewing machines disclosed in the above-mentioned patent documents, the threading action still needs to be put into the thread hook groove by hand, and the degree of automation is relatively low.

At the same time, when clamping the suture, it cannot be guaranteed that the same length remains each time, resulting in untidyness, and the phenomenon of burr or bird's nest

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