Sewing machine

A sewing machine and needle technology, applied to sewing machine components, sewing equipment, program-controlled sewing machines, etc., can solve the problems of materials that cannot change the amplitude of up and down movements, cannot fully cope with thickness, and cannot fully cope with shrinkage, etc., to achieve Improve the effect of correspondence

Active Publication Date: 2006-09-13
JUKI CORP
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Problems solved by technology

[0006] However, in the case of the above-mentioned Patent Document 1, although the height of the bottom dead center of the vertical motion of the intermediate presser foot can be adjusted, the amplitude of the vertical motion cannot be changed.
Therefore, there are inconveniences in that the thickness of the material such as cloth to be sewn cannot be adequately handled, and in addition, the shrinkable material cannot be adequately handled.

Method used

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Examples

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Embodiment Construction

[0049] (The overall structure of the electronic cycle sewing machine)

[0050] Embodiments of the present invention will be described based on FIGS. 1 to 22 .

[0051] In this embodiment, an electronic cycle sewing machine will be described as an example of the sewing machine. An electronic cycle sewing machine is a sewing machine that has a holding frame that is used as a cloth holding portion for holding the cloth of the sewn object to be sewn. The stitches of the specified sewing data (stitch pattern).

[0052]Here, the direction in which the machine needle 108 described later moves up and down is defined as the Z-axis direction (up-and-down direction), and one direction perpendicular thereto is defined as the X-axis direction (left-right direction). The direction perpendicular to the two directions of defines the Y-axis direction (front-rear direction).

[0053] Electronic cycle sewing machine 100 (hereinafter referred to as sewing machine 100), as shown in FIG. Pedal ...

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Abstract

PROBLEM TO BE SOLVED: To provide a sewing machine in which the frequency of vertical motion of a presser foot is made more appropriate.

SOLUTION: The sewing machine comprises a vertical needle motion means 2 for moving up and down a sewing needle 108, positioning means 76a, 77a which mutually position a workpiece and the sewing needle, a presser foot means 1 which vertically moves a presser foot 29 so that the workpiece held at a cloth hold section 111 does not go up with the sewing needle, a presser foot height adjusting means 34 which adjusts the height of the presser foot. The presser foot height adjusting means has a driving source 42 for adjusting the height of the presser foot and a motion control means 1000 which drives the driving source at each time the presser foot goes up and goes down and adjusts amplitude of vertical motion of the presser foot.

COPYRIGHT: (C)2006,JPO&NCIPI

Description

technical field [0001] The invention relates to a sewing machine capable of controlling the up and down movement of a middle cloth pressing mechanism. Background technique [0002] In the conventional sewing machine, the needle is transported and sewn at any position while the cloth is held by the frame-shaped pressure plate and conveyed along the XY direction. Middle cloth pressing mechanism that presses down the periphery of the needle penetration part of the cloth when it is raised. [0003] In this middle cloth pressing mechanism, when the machine needle rises from the cloth, the middle presser foot is pressed downward by the elastic force to press the cloth downward. rise together. [0004] As such an intermediate presser mechanism, known is a mechanism that displaces the swing fulcrum of a swinging body that moves the intermediate presser up and down and adjusts the height of the intermediate presser from the needle plate (for example, refer to Patent Document 1 ). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B29/02D05B19/04
CPCC25D11/005C25D21/02
Inventor 洼田次勇三须伸介
Owner JUKI CORP
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