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sewing machine

A technology for sewing machines and objects to be sewn, applied in sewing machine components, sewing equipment, cloth feeding mechanisms, etc., and can solve problems such as inability to detect

Active Publication Date: 2022-03-29
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In addition, in the above-mentioned conventional sewing machine, when the sewn object to be sewed already has a sewn object, etc., and the sewn object protrudes outward compared with the edge portion of the sewn object, the thread sensor may be activated. The position of the edge of the sewn object cannot be detected because it is hidden by the seamed object

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment Construction

[0102] [target of sewing]

[0103] Below, based on Figure 1 to Figure 27 , the sewing machine 10 as an embodiment of the present invention will be described.

[0104] figure 1 (A) is a top view showing the sewing object H of the sewing machine 10, figure 1 (B) is along figure 1 (A) Cross-sectional view along line A-A.

[0105] The material to be sewn H is a so-called bra cup material for women's underwear. The central part has a convex shape with mountains on the front side and a concave curved surface on the back side, and has flexibility and shapeability. In addition, in figure 1 The figure in (A) shows the state where the surface of the to-be-sewn object H faces the back side of the paper, and the back of the to-be-sewn object H faces the front side of the paper.

[0106] As shown in the figure, the edge portion H1 of the object H to be sewn is formed in a curved shape, and the first seamed object J as a surface material is sewn to the entire surface of the object H ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The present invention provides a sewing machine which can sew a to-be-sewn object whose edge portion is masked. The sewing machine has: a first feeding mechanism, which feeds the sewing object through a conveying wheel arranged in a state in which the rotation axis is obliquely inclined relative to the horizontal direction, adjacent to the needle drop position; the second feeding mechanism , it is arranged on the upstream side of the feed direction relative to the first feed mechanism, and the rotating spherical feed body is brought into contact with the upper part to feed the object to be sewn; The upstream side of the feeding direction detects the position of the edge portion of the sewing object in a direction intersecting with the feeding direction of the sewing object; the control device corresponds to the position of the sewing object detected by the edge detection part The feeding operation of the second feeding mechanism is controlled according to the position of the edge portion. In the sewing machine, there is a light projecting part that irradiates light to the object to be sewn. Through the light, detect the position of the edge of the object to be sewn.

Description

technical field [0001] The present invention relates to a sewing machine suitable for sewing along curves. Background technique [0002] For example, when sewing a to-be-sewn object along a curve, conventionally, the operator presses the to-be-sewn object with the left hand, slides the right hand, and turns around the left hand to sew. [0003] In the case of this sewing, in order to sew along the locus of the target curve, skilled skills are required, and there is a problem that only skilled workers can sew. [0004] Conventionally, there has been a high demand for a sewing machine that can sew regardless of skills along the locus of the above-mentioned target curve. The feeding of the sewing object is carried out by a conveying wheel arranged in a stable state and a rotating spherical feed body (for example, refer to Patent Document 1). [0005] In this sewing machine, the position of the edge of the object to be sewn is detected by a thread sensor on the needle plate, a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B35/00D05B79/00
CPCD05B35/00D05B79/00
Inventor 横山正
Owner JUKI CORP
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