Sewing machine

A sewing machine and feeding mechanism technology, applied to sewing machine components, sewing machines, sewing machine control devices, etc., can solve problems such as difficult sewing, easy swinging of the traveling direction to the left or right, and inability to cope with changes in the curvature of the curve, etc. Achieve the effect of realizing sewing quality and stable traveling direction

Active Publication Date: 2017-02-15
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the above-mentioned conventional sewing machine provided with the roller feeding part has the following problem because it feeds adjacent to the needle drop position, that is, it is easy to turn around the needle drop position, and the stitches are sewn. The direction of travel of the object tends to swing to the left or r

Method used

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Examples

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Embodiment Construction

[0063] [Overall structure of sewing machine]

[0064] Below, based on Figure 1 to Figure 7 , the sewing machine 10 as an embodiment of the present invention will be described.

[0065] figure 1 It is a perspective view omitting a part of the structure of the sewing machine 10, figure 2 It is an oblique view viewed from another direction.

[0066] The above-mentioned sewing machine 10 is equipped with: a needle bar 12, which holds the sewing needle 11 at the lower end; a needle bar vertical movement mechanism (not shown), which moves the needle bar 12 up and down; The upper thread of the needle 11 is caught and entangled with the lower thread; the main feed mechanism (not shown in the figure) makes the feed teeth enter and exit from the opening of the needle plate 13, and advances the sewing object in a predetermined straight direction. Give; the first feeding mechanism 30, which is adjacent to the needle drop position of the needle plate 13, that is, the needle hole, car...

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Abstract

The invention provides a sewing machine which can well perform sewing along a curved line. The sewing machine comprises a first feeding mechanism (30), a second feeding mechanism (50), a control device (90) and a side end detection part (17). The first feeding mechanism is arranged to be adjacent to a sewing position, and feeds to-be-sewn object through a roller which is configured to be in an oblique state. The second feeding mechanism is configured to be on the upstream side in the feeding direction relative to the first feeding mechanism, comprises a feeding body (51) which is in contact with the to-be-sewn object in a position deviating from a rotation center, and feeds the to-be-sewn object along an arc around the rotation center. The control device controls a driving source (33) of the first feeding mechanism and a driving source (53) of the second feeding mechanism. The side end detection part is in the direction intersecting the feeding direction of the to-be-sewn object in the sewing position, and detects the position of the side end part of the to-be-sewn object. The control device and the position, which is detected by the side end detection part, of the side end part of the to-be-sewn object correspondingly control the rotation speed of the driving source of the second feeding mechanism.

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, currently, the operator presses the to-be-sewn object with his left hand, slides his right hand, and rotates around the left hand. [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] In view of the above problems, there has been proposed a sewing machine including a roller feed unit that cooperates with the feed teeth to feed a to-be-sewn object at a position adjacent to the needle drop position. [0005] In this sewing machine, the rotation axis of the roller in the roller feeding section is inclined relative to the horizontal direction, and the roller is rotationally driven by a motor, so that the object to be sewn can be conveyed along the arc sh...

Claims

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Application Information

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IPC IPC(8): D05B27/18D05B69/10
CPCD05B27/18D05B69/10D05D2305/32
Inventor 横山正
Owner JUKI CORP
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