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A line cutting device and a sewing machine

A thread cutting and sewing machine technology, which is applied to sewing machine components, thread cutting mechanisms in sewing machines, sewing equipment, etc.

Inactive Publication Date: 2014-12-24
CANDART
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, product defects occur, and treatment work on the lower surface of the fabric is required

Method used

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  • A line cutting device and a sewing machine
  • A line cutting device and a sewing machine
  • A line cutting device and a sewing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] Hereinafter, a thread cutting device and a sewing machine according to embodiments of the present invention will be described in detail with reference to the drawings.

[0064] figure 1 It is an exploded perspective view showing the thread cutting device 1 according to one embodiment of the present invention.

[0065] figure 2 It is an exploded perspective view showing an embroidery machine (sewing machine) 101 including the thread cutting device 1 described above.

[0066] image 3 (a) to (d) are plan views for explaining the operation of the thread cutting device 1 .

[0067] Figure 4 It is a schematic side view for explaining the operation of the thread cutting device 1 .

[0068] figure 1 The shown thread cutting device 1 includes a movable blade (movable blade) 2, a fixed blade (fixed blade) 3, an upper leaf spring (elastic member) 4 as an example of a holding member, a lower leaf spring 5, and a cutter shaft 6. .

[0069] The movable knife 2 has an upper...

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Abstract

The invention provides a line cutting device and a sewing machine so as to raise an equipment starting rate and quality. In the line cutting device configured to be with the sewing machine, a movable blade ( a movable knife (2) ) and a maintaining component (4) are provided; the movable blade ( the movable knife (2) ) performs reciprocating movements between a first position where the movable blade ( ( the movable knife (2) ) is accommodated and a second position (P2) where the movable blade ( ( the movable knife (2) ) starts actions of cutting an upper line (18) and a lower line (19); the movable blade ( ( the movable knife (2) ) is also provided with a third position (P3); the third position (P3) is between the first position (P1) and the second position (P2); at the third position, the movable blade ( ( the movable knife (2) ) hooks a cut new upper line (20); and the maintaining component (4) maintains the cut upper line (18) as well as the cut new upper line (20).

Description

technical field [0001] The present invention relates to a thread cutting device arranged in a sewing machine such as an embroidery machine, and a sewing machine provided with the thread cutting device. Background technique [0002] Conventionally, for sewing machines such as embroidery machines, there is known a thread cutting device that cuts the thread when changing the upper thread, etc. (for example, refer to Patent Document 1). [0003] In the thread cutting device described in Patent Document 1, the following method is adopted: for the upper thread pulled up by the lifting action of the balance, one of the reciprocating motions of the movable knife is used to hook, and the other action is used to hook the upper thread with the fixed knife. Cut off under the cooperative action. [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Patent Application Laid-Open No. 8-57181 [0007] However, in the method of cutting the upper thre...

Claims

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Application Information

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IPC IPC(8): D05B65/00D05C11/20
CPCD05B37/04D05B65/02D05C11/20D05D2305/36
Inventor 斋藤真见
Owner CANDART
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