Needle rod for two-needle sewing machine, and switching mechanism for needle rod

A switching mechanism and sewing machine technology, applied in the direction of sewing machine needle holders, sewing machine components, sewing equipment, etc., can solve the problems of difficult processing and manufacturing, inability to switch positions, incomplete application, etc., and achieve simple and reliable switching actions, and convenient processing and assembly , control simple effects

Active Publication Date: 2012-04-11
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the above scheme, the structure of the needle bar is relatively complicated, and it is difficult to manufacture; although the working states of the two needle bars can be switched, the positions cannot be switched. In some cases, such as in the electronic pattern machine, the above structure is not complete. Be applicable
In addition, its switching mechanism also has the defects of complex structure and difficult control.

Method used

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  • Needle rod for two-needle sewing machine, and switching mechanism for needle rod
  • Needle rod for two-needle sewing machine, and switching mechanism for needle rod
  • Needle rod for two-needle sewing machine, and switching mechanism for needle rod

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Embodiment Construction

[0023] Such as figure 1 As shown, the needle bar of a double-needle sewing machine of the present invention includes a hollow needle bar body 106, and the lower end of the needle bar body 106 is fixedly connected with a needle bar head 101 for installing machine needles. In the needle bar body 106, a return spring 102, a first wedge 103, a second wedge 104, and a switch bar 105 are sequentially installed, and the upper end of the switch bar 105 is exposed from the needle bar body 106. The needle bar body 106 comes out, and in this embodiment, an end cover 108 is fixed on the upper end of the needle bar body 106, and the upper end of the switching pressure rod 105 passes through the end cover 108, and the switching pressure bar 105 is provided with a limiter that matches the end cover 108. Boss 107.

[0024] Such as figure 2 As shown, a first through hole 110 is opened on the side wall of the needle shaft body 106 at a position corresponding to the first wedge 103 , and a fi...

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Abstract

The invention discloses a needle rod for a two-needle sewing machine, and a switching mechanism for the needle rod. The needle rod comprises a hollow needle rod body; the lower end of the needle rod body is fixedly connected with a needle rod head which is used for installing a frame needle; a returning spring, a first wedge block, a second wedge block and a switching compression lever are arranged in the needle rod body sequentially; the upper end of the switching compression lever is exposed out of the needle rod body; a tip of the first wedge block faces upward; the tip of the second wedgeblock faces upward; a first through hole is formed on the side wall, corresponding to the first wedge block, of the needle rod body; a first sliding block is arranged in the first through hole; and the side wall, corresponding to the second wedge block, of the needle rod body is provided with a second through hole, and a second sliding block is arranged in the second through hole. The switching mechanism for the needle rod comprises the needle rod, a needle rod frame, a needle rod sleeve, a needle rod drive mechanism and a switching compression block; the needle rod sleeve is connected with the needle rod drive mechanism; and the needle rod frame is also connected with a translation device.

Description

technical field [0001] The invention relates to a double-needle sewing machine. The sewing machine has two needle bars. Under the action of a switching mechanism, the states of the two needle bars can be switched so that one of the needle bars is in the working state and the other needle bar is in the locked state. More specifically, the present invention relates to a needle bar structure and a needle bar switching mechanism of a double-needle sewing machine. Background technique [0002] Chinese patent application CN200510103979.6 discloses a needle bar mechanism of a double-needle sewing machine, which is a needle bar mechanism of a double-needle sewing machine with a single-needle stop function that can selectively stop a pair of needle bars from moving up and down, including: holding the needle a pair of needle bars, a needle bar supporting body capable of supporting the pair of needle bars up and down, and a needle bar vertically moving the needle bars up and down by us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B55/10D05B55/14
Inventor 李创王俊跃陈建蔡敏华
Owner JACK SEWING MASCH CO LTD
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