sewing machine

Abstract

The present invention provides a sewing machine that performs sewing corresponding to the bending of a side end portion of a to-be-sewn object. It has: the main feeding mechanism, which conveys the first upper-side sewn object and the lower-side second sewn object in the forward direction; the upper and lower lateral feed mechanisms, which make the first and second Two objects to be sewn move in the left and right directions; the first and second pressure-sensitive sensors make the side ends of the first and second objects to be sewn abut against the rear of the needle dropping position; the control device, its Perform position adjustment control for adjusting the positions of the side ends of the first object to be sewn and the positions of the side ends of the second object to be sewn, and the control device is based on the detection pressures of the first pressure-sensitive sensor and the second pressure-sensitive sensor, The position adjustment control of the first to-be-sewn object realized by the upper side infeed mechanism and the position adjustment control of the second to-be-sewn object by the lower side infeed mechanism are performed.

Description

technical field [0001] The present invention relates to a sewing machine for sewing upper cloth and lower cloth. Background technique [0002] Such as Figure 12 As shown, in order to perform sewing in which the seams of the upper cloth and the lower cloth are consistent with each other, the conventional sewing machine 100 has: feed teeth (not shown in the figure) that align the upper cloth and the lower cloth along the stitch forming direction. Carry out; Up and down lateral feed mechanism (illustration omitted), it is on the upstream side of sewing needle 101, and upper cloth and lower cloth are respectively conveyed independently along the direction orthogonal to cloth feed direction; And cloth end detection device 110 , 120 , which detect the positions of the side ends of the upper fabric and the lower fabric on the seam side side between each transverse feed mechanism and the feed teeth (for example, refer to Patent Document 1). [0003] Figure 13 It is an enlarged f...

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned existing sewing machine uses an optical line sensor to detect the position of the side ends of the upper and lower cloths, so it is easily affected by dust, pollution, and foreign matter, and sometimes the side ends of the upper and lower cloths cannot be aligned. adjust to the proper position

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