Sewing machine

A sewing machine and sewing needle technology, which is applied to sewing machine components, sewing machine needle seats, sewing equipment, etc., can solve the problems that the sewing speed cannot be increased, the needle bar table is heavy, and the needle bar is difficult to achieve high speed, etc., to achieve Ease of high-speed rotation, high speed, and miniaturization

CN103374797AActive Publication Date: 2013-10-30JUKI CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-10-30

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Abstract

The invention provides a sewing machine that can realize high-speed needle rotation, wherein the sewing machine comprises a needle rod (12) that holds a needle (11); a needle rod rotation platform (31) that can move up and down to support the needle rod, and is supported on the sewing machine frame by rotating together with the needle rod around a centre line (C); a needle up-and-down move mechanism (20) that is connected with the needle rob and moves the needle rod up and down; a needle rotating motor (32) as a power for driving the needle rod rotate; and a scale (14) that pulls a thread. The needle rod rotation platform (31) can support part of the needle rod by moving up and down. The needle up-and-down move mechanism (20) is connected to the needle rod when the needle up-and-down move mechanism doesn't coincide with part of the needle rod supported by the needle rod rotation platform.
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Description

technical field

[0001] The present invention relates to a sewing machine for rotating a needle bar. Background technique

[0002] In the case of a sewing machine such as an X-Y feed sewing machine, which uses a fabric holding frame to hold the fabric, synchronizes with the up and down movement of the needle bar, and positions it at any position on the horizontal plane to form any stitch, the needle hole of the sewing needle becomes The state is oriented in a fixed direction, so the quality of the sewing state differs according to the moving direction of the fabric.

[0003] Therefore, in the existing sewing machine, on the needle bar table that supports the needle bar so as to be movable up and down, a driving device that rotates around the needle bar is provided at the same time, and the needle bar is rotated corresponding to the moving direction of the cloth to realize Improvement of sewing state (for example, refer to Patent Document 1).

[0004] Patent Document 1: Chin...

Examples

no. 2 approach ］

[0279] As the second embodiment of the present invention, based on Figure 22 ~ Figure 31 , a sewing machine 100A using a cutter needle having a needle drop hole of a unique shape as a sewing needle will be described.

[0280] exist Figure 22 Among them, the sewing machine 100A is different from the above-mentioned sewing machine 100 in that the lower end of the needle bar 12 has a flat cutting knife needle 11A and a needle bar thread guide 154A for the knife needle. In addition, the control device 110 of the sewing machine 100A (see Figure 14 ) is characterized in that the inherent sewing operation control is performed on the cutter needle 11A described later.

[0281] In addition, the structure of this sewing machine 100A other than the above is the same as that of the sewing machine 100 . In the following description, differences between the sewing machine 100A and the sewing machine 100 will be mainly described.

[0282] The above-mentioned sewing machine 100A is a s...