Sewing machine

A sewing machine and sewing needle technology, which is applied to sewing machine components, sewing equipment, program-controlled sewing machines, etc., can solve the problems of being unable to press the fabric, forming stitches, and needle loops of an appropriate size, etc., so as to achieve operability, The effect of reducing workload

Active Publication Date: 2013-08-14
JUKI CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the sewing machine that holds the fabric by the holding frame and moves the holding frame in the XY direction while moving the needle at any position to sew, when the middle part of the holding frame is sewn, it cannot be pressed because it is separated from the holding frame. The fabric near the sewing needle, so when the sewing needle rises, the fabric will float with the sewing needle, so the needle loop cannot form an appropriate size, resulting in stitch skipping (stitch cannot be formed)

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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Examples

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Embodiment Construction

[0042] (The overall structure of the electronic cycle sewing machine)

[0043] according to Figure 1 to Figure 20 Embodiments of the present invention will be described.

[0044] In this embodiment, an electronic cycle sewing machine will be described as an example as a sewing machine. The electronic cycle sewing machine has a holding frame as a cloth holding part that holds a cloth as a sewn object to be sewn, and by moving the holding frame relative to a sewing needle, the cloth held by the holding frame is formed on the cloth held by the holding frame. The stitches of the specified sewing data (stitch pattern).

[0045] Here, the direction in which the sewing needle 108 described later moves up and down is defined as the Z-axis direction (up-and-down direction), and a direction perpendicular thereto is defined as the X-axis direction (left-right direction). Direction A direction in which these two are orthogonal is defined as a Y-axis direction (front-rear direction). ...

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Abstract

The object of the present invention is to lighten the work burden of determining the lower dead point position of middle presser foot. A sewing machine is provided with a needle reciprocate mechanism for making a sewing needle (108) move up and down; a position unit for positioning the cloth relative to the sewing needle; a middle presser foot mechanism (1) which moves with the needle reciprocate mechanism to make a middle presser foot (29) move up and down synchronously with the sewing needle; and a middle presser foot height adjusting unit for adjusting the height of the lower dead point of the middle presser foot. The middle presser foot mechanism is provided with a middle presser foot separate unit for switch the following status: the status of moving with the needle reciprocate mechanism, and the separating status of holding the middle presser foot at the lower dead point height, and releasing the movement with the needle reciprocate mechanism.

Description

technical field [0001] The present invention relates to a sewing machine having an intermediate presser mechanism for preventing cloth from floating due to friction with a sewing needle moving up and down. Background technique [0002] In the sewing machine that holds the fabric by the holding frame and moves the holding frame in the XY direction while moving the needle at any position to sew, when the middle part of the holding frame is sewn, it cannot be pressed because it is separated from the holding frame. The fabric near the sewing needle is trapped, so when the sewing needle rises, the fabric will float with the sewing needle, so the needle loop cannot be formed in an appropriate size, and stitch skipping occurs (stitches cannot be formed). [0003] Therefore, there is currently provided an intermediate presser mechanism that moves up and down by synchronizing a cylindrical intermediate presser through which a sewing needle that moves up and down passes with the needl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B19/02D05B29/00
CPCD05B19/14D05B19/16D05B27/22D05B29/02D05B29/08D05B69/10D05B69/30
Inventor 冈村正美春日俊明
Owner JUKI CORP
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