Sewing machine

A technology for sewing machines and objects to be sewn, which is applied in the direction of sewing machine components, sewing equipment, and cloth feeding mechanisms. It can solve problems such as misalignment of the front edge of the cloth, and the inability to tangle the stitches of the sewing needle, and achieve the effect of accurate identification.

Active Publication Date: 2011-01-26
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As a result, since the detection unit that optically detects the end of the cloth misidentifies the loose fiber thread (hereinafter referred to as fluff) as the end of the cloth,

Method used

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Examples

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Example Embodiment

[0044] (Overall structure of embodiment of the present invention)

[0045] in figure 1 , 2 Among them, the up-and-down feed sewing machine 100 has: feed gear 1, feed foot 2, lower roller 3, lower pulse motor 4, lower coupling mechanism 5, lower solenoid 6, upper roller 7, upper side The pulse motor 8, the upper connecting mechanism 9, the upper solenoid 10, the separation plate 11, the cloth sensor 12, and the control device 13.

[0046] Among them, the lower roller 3, the lower pulse motor 4, the lower connecting mechanism 5, the lower solenoid 6, the upper roller 7, the upper pulse motor 8, the upper connecting mechanism 9, the upper solenoid 10, The separating plate 11 and the cloth sensor 12 constitute an end adjustment mechanism, which moves and adjusts the positions of the ends of the two pieces of cloth C1 and C1 along the stitch in the direction orthogonal to the feeding direction of the feed teeth 1 .

[0047] (Feed tooth)

[0048] in figure 2 Among them, the feed tooth 1 ...

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PUM

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Abstract

The invention relates to a sewing machine for inhibiting the quality reduction of sewing matter caused by fluff by using fewer sensors. The sewing machine is provided with a feed rack in contact with a sewed matter on a needle plate from lower side to execute the feed motion; a feed pin in contact with the sewed matter from upper side; an end part adjusting mechanism for moving and adjusting a position of the sewed matter along the end part of a stitching facing to a direction in cross with a feed direction of the feed rack; a detection unit for detecting whether end part of the sewed matter is located at a regulated position; and a control unit for controlling an adjusting driving source of the end part adjusting mechanism based on a result of the detection unit so as to enable the end part of the sewed matter to parallel to the stitching; the control unit utilizes the following structures: judging whether the fluff is in existence based on a continuous cloth feed distance which is obtained according to the detection state of the end part of the sewed matter, controlling the adjusting driving source based on the judgment result and executing the adjusting operation by the end part adjusting mechanism.

Description

technical field [0001] The present invention relates to a sewing machine which sews two objects to be sewn while aligning their edges. Background technique [0002] At present, in order to keep the seam allowance constant, a sewing machine that sews while aligning the edges of two overlapping pieces of sewn objects (cloths) is equipped with a vertical feeding mechanism that feeds the two pieces of fabrics in the direction of feeding the fabrics. unit, and a cloth moving device is provided, which is arranged on the upstream side of the cloth feeding direction relative to the up and down feeding unit, so that the cloth moves in a direction intersecting with the cloth feeding direction, so that one end of the cloth along the cloth feeding direction edge alignment. [0003] The above-mentioned cloth moving device has: upper and lower manipulators, which have rollers, which are in contact with the cloth C2 and C1 respectively, and rotate around the axis along the feeding directi...

Claims

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Application Information

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IPC IPC(8): D05B35/12D05B35/00
CPCD05B21/00D05B27/10D05B27/12D05B35/00
Inventor 横田哲久
Owner JUKI CORP
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