Needle stem mechanism of double-needle sewing machine

A sewing machine and needle bar technology, which is applied in the field of needle bar mechanism, can solve problems such as fretting wear, achieve the effects of improving productivity, improving corrosion resistance, and realizing the simplification of structure

Inactive Publication Date: 2006-05-24
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] On the other hand, the clutch mechanism has a clutch member engaged with each needle bar, an input member that moves the clutch member in the engaging direction, a locking claw that restricts movement in the engaging direction of the clutch member, and a locking claw for releasing the clutch member. The structure of the clutch mechanism, the switching parts, and the input parts in the restricted state of the stopper are made of carburized case-hardened steel or tool steel. In a dry lubricated environment, the holding or releasing of each needle bar will Fretting wear is prone to occur due to repeated shocks

Method used

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  • Needle stem mechanism of double-needle sewing machine
  • Needle stem mechanism of double-needle sewing machine
  • Needle stem mechanism of double-needle sewing machine

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Embodiment Construction

[0058] (Overall configuration of the embodiment of the present invention)

[0059] Below, according to Figure 1 to Figure 11 , the embodiments of the present invention will be described in detail.

[0060] figure 1 It is a front view of the needle bar mechanism 10 of the double-needle sewing machine according to the embodiment of the present invention, figure 2 (A) is a side view in which a part of the needle bar 20 is omitted, figure 2 (B) is the front view, image 3 A front view of the needle bar mechanism 10 when the needle bar is lowered is shown.

[0061] The double-needle sewing machine has general various mechanisms required for sewing such as the following mechanisms, namely, a sewing machine frame that accommodates and maintains various components for sewing; as the needle bar mechanism 10 to be described below, The sewing machine motor that drives the power source of the two machine needles up and down; the rotary hook mechanism or the loop mechanism, which i...

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PUM

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Abstract

A needle bar mechanism for a double-needle sewing machine, comprising: a needle bar support body (40) supporting a pair of needle bars (20) capable of moving up and down; A needle bar up and down movement mechanism (50) for each needle bar to move up and down; a clutch mechanism (60) equipped with a plurality of input parts (62, 66) that accept the holding and release input of each needle bar; a switching part (81), the switching Parts (81) are selectively docked on each input part that carries out the lifting action and carry out the switching of holding or releasing the needle bar; and also have a grease supply mechanism (91), and the grease supply mechanism (91) is set On the needle bar abutment, at the same time, it is used to supply grease to the sliding parts of the needle bar abutment and each needle bar. The needle bar mechanism of this double needle sewing machine increases the durability of the unit.

Description

technical field [0001] The invention relates to a needle bar mechanism of a double-needle sewing machine which uses two needle bars simultaneously or selectively for sewing. Background technique [0002] A needle bar mechanism of a double-needle sewing machine having a single-needle stop function capable of selectively stopping the up and down movement of a pair of needle bars has: a needle bar supporting body capable of supporting a pair of needle bars up and down; The needle bar up and down movement mechanism for the needle bar abutment of the needle bar makes each needle bar move up and down; the clutch mechanism, the combination mechanism, performs the holding and release of each needle bar for the needle bar abutment, and has the function of receiving and switching A plurality of input parts for the input of the external operating force for the holding and release of each needle bar; A certain switching is performed to hold or release the needle bar (for example, refer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B55/16D05B55/10D05B71/00
Inventor 山本博嗣饭岛秀和
Owner JUKI CORP
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