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Hooking and cutting device for preventing stitching chains from getting loose

A sewing and loosening technology is applied to the thread cutting mechanism, sewing equipment, sewing machine components and other directions in the sewing machine. , Simplify components, strengthen the effect of linkage relationship

Inactive Publication Date: 2013-03-20
顾飞龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the above-mentioned existing sewing machine thread cutter still has many shortcomings in the actual implementation process, such as relatively complicated structure, many components, and complicated force application principle in the thread cutting process.

Method used

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  • Hooking and cutting device for preventing stitching chains from getting loose
  • Hooking and cutting device for preventing stitching chains from getting loose
  • Hooking and cutting device for preventing stitching chains from getting loose

Examples

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the embodiments of the drawings.

[0021] First, see figure 1 , 2 Figure 4 shows the overall schematic diagram of the hooking device for preventing the sewing chain from loosening according to the present invention. The main structure of the sewing machine is generally conventional and known technology, and the car plate that moves up and down on the needles 1A, 1B, 1C is dropped. The lower side of the needle is provided with a hook looper 2 and a cutting knife 3 corresponding to hooking and winding the suture 20, and the other side is provided with a hooking device 4, which includes:

[0022] A power source 41 for driving the hooking device 4 to move;

[0023] A rod 42 has two sets of terminals 421 and 422, and one set of terminals 421 is correspondingly combined with the power source 41;

[0024] A swing arm 43, which includes a fulcrum 431 pivotally connected to the machine table A, a force ...

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Abstract

The invention relates to a hooking and cutting device for preventing stitching chains from getting loose, which mainly comprises a power source drive supporting rod that is mainly used for driving an oscillating arm pivoted and positioned with a machine surface plate to generate a moment oscillating displacement, and a hook cutter assembled on the oscillating arm is used for hooking and cutting an encircling thread the end of which passes through a thread hooking ring between stitching threads; the encircling thread hooks off the middle of an original encircling thread in the end of cloth stitching after the stitching action is ended, which ensures that an encircling yarn section tightly reeled with the stitching thread and an encircling thread section which can be taken out are presented; and thereby the direction of the original encircling thread is changed to prevent the thread from being taken out along with so as to avoid the phenomenon of stitching chain looseness.

Description

Technical field [0001] The invention relates to the technical field of sewing machine structures, in particular to a hooking device for preventing sewing chain mesh from loosening. Background technique [0002] Nowadays sewing machines have automatic thread trimming function, and the thread trimmers commonly seen in sewing machines, please refer to the attached Figure 8 As shown, the sewing machine in the figure is mainly explained with three needles. The fabric is fed and sewn to a certain extent. When the three needles 5A, 5B, and 5C start to retreat, they are inserted into the needles 5A, 5B, and 5B. The 5C needles 50A, 50B, 50C will form loops, and the hook looper 6 will drive the hook looper thread 60 to pass through the stitches of each needle thread 50A, 50B, 50C, and then the needles 5A, 5B, 5C will continue to retreat When the hook thread looper 6 comes out of the needles 5A, 5B, 5C, the fed hook thread looper thread 60 will be tightened under the fabric by the retreated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B65/06
Inventor 顾飞龙
Owner 顾飞龙