Thread trimming device and thread trimming method of embroidery machine

Abstract

The invention discloses a thread trimming device and thread trimming method of an embroidery machine, and belongs to the technical field of embroidery machines. The device comprises a movable cutter, a fixed cutter and a movable cutter driving mechanism; the movable cutter is mounted on a cutter bar of the movable cutter driving mechanism; a through hole is formed in the rear side of a fixed cutter edge of the fixed cutter; an embroidery thread retaining structure is arranged between the movable cutter and the fixed cutter and comprises an embroidery thread retaining body which at least partially acts on the upper surface of the movable cutter, and the acting part is located on the front side of a movable cutter edge; the front end of the embroidery thread retaining body extends in an upward trend to form the free end of the embroidery thread retaining structure, and the free end extends into the through hole; the embroidery thread retaining structure is used for binding the end of a bottom thread and / or an upper thread between the acting part and the movable cutter before thread trimming; and the movable cutter driving mechanism drives the movable cutter to move towards the fixed cutter, the movable cutter forks out the bottom thread and the upper thread to be cut during movement and continues to move towards the fixed cutter, and until the movable cutter coincides with the fixed cutter, the bottom thread and the upper thread are cut off. The method is realized based on the device. According to the invention, the thread end of the upper thread is prevented from being brought into a rotating shuttle to form a new stitch so as to affect the embroidery quality.

Description

Technical field [0001] The present invention belongs to the technical field of embroidery machines, and more particularly to an embroidery machine shear apparatus and an embroidery cutting method. Background technique [0002] At present, the embroidery machine industry, embroidery is completed, start embroidery another graphic unit, need to cut the wiring and bottom line below the layout, due to the numerous number of embroidered units, the cut line The line head left behind the rear needle is located below the place. Generally, the cutting machine cut lines After the needle embroidery adhesive, a flutter is passed through the display and separated into two stocks before and after, which has a coil to form a coil through the shot. Bottom line. During the formation of the coil, during the junction, since the wiring wire is not bonded, it is easy to make the embroidered line cannot be tightened. At this time, the wire below the layout is messy, the head head is short, and the qual...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention proposes an embroidery machine thread trimming device and an embroidery machine thread trimming method, which can avoid messy thread ends and different thread lengths under the cloth surface, and solve the problem that the bottom thread breaks loose easily due to too loose stitches. The problem of off-thread and broken thread can also prevent the upper thread thread from being brought into the rotary hook to form new stitches, which will affect the quality of embroidery

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