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Needle drive of sewing machine

A driving mechanism and a technology for sewing machines, which are applied to needle holders for sewing machines, sewing machine components, sewing equipment, etc., can solve problems such as troublesome adjustment work and difficult work.

Active Publication Date: 2012-07-18
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the conventional sewing machine needle driving mechanism shown in the above-mentioned Patent Document 1, after the pulse motor is installed outside the sewing machine frame, it is necessary to perform so-called home alignment work, that is, to adjust the position of the needle bar rocking shaft. The position of the swing needle and the rotation position of the pulse motor (especially the initial position), so there is a problem that the adjustment work after mounting is very troublesome.
[0006] Yuki is that the frame of the sewing machine is mostly formed by casting. In order to perform adjustment work after assembly, it is necessary to provide holes for work, etc. In addition, it is very difficult to work in a narrow frame.

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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  • Needle drive of sewing machine
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  • Needle drive of sewing machine

Examples

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no. 1 example

[0030] (Overall configuration of the embodiment)

[0031] First, based on figure 1 as well as figure 2 , the overall structure of the panel sewing machine 100 equipped with the needle drive mechanism 10 of the sewing machine of the first embodiment will be described.

[0032] The paneling sewing machine 100 is a sewing machine for sewing paneling on an upper body piece not shown in the figure, and has a sewing machine frame 40 constituting most of its outer shape, and a feeder for conveying the fabric consisting of the upper body piece and the paneling. The cloth mechanism, that is, the large presser foot cloth feeding mechanism not shown in the figure, and the needle up and down movement mechanism 20 that drives the two needle bars 25 and 25 up and down, and makes the machine needle 26 held on the needle bar 25 move along the cloth feeding direction The needle driving mechanism 10 constituted by a swinging needle mechanism 30.

[0033] Moreover, the panel sewing machine 1...

no. 2 example

[0076] Next, a second embodiment of the needle drive mechanism of the sewing machine according to the present invention will be described. In addition, in this embodiment, components having the same configuration as those in the above-mentioned first embodiment are given the same reference numerals, and the drawings and explanations are omitted for overlapping descriptions.

[0077] Such as Figure 4 ~ Figure 6 As shown, the needle drive mechanism of the sewing machine of this embodiment is composed of the above-mentioned needle up and down movement mechanism 20 and the swing mechanism 130 having a pulse motor 135 as a rotation drive source, and is used as a drive source for swing needles. The pulse motor 135 is different from the first embodiment in this point. And, in this machine needle driving mechanism, machine needle up and down action mechanism 20, needle bar rocking shaft 31, needle bar rocking shaft abutment 32, crank bar 33 and the connecting structure of these mech...

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Abstract

To provide a needle drive mechanism for a sewing machine capable of improving work efficiency. A transmission mechanism and an air cylinder 35 are integrally held by a connecting body 36, that is, the transmission mechanism and the air cylinder 35 are integrally formed by so-called unitization through the connecting body 36 and detachably mounted into a side face position of an arm part 43 of a binding sewing machine 100 by screws serving as fastening members. Work efficiency in parts replacement or the like can thereby be considerably improved, and adjustment work after the sewing machine ismounted can be simplified.

Description

technical field [0001] The invention relates to a needle drive mechanism of a sewing machine with a swing needle function. Background technique [0002] In order to make the thread difficult to unravel, generally, reverse sewing and compression sewing are performed at the starting position and the ending position of sewing on the sewing machine. [0003] Wherein, reverse sewing refers to a sewing process in which sewing is repeated along the conveying direction of the object to be sewn being conveyed on the needle plate at the beginning and the end of sewing. Therefore, a known sewing machine has a needle drive mechanism capable of swinging a needle bar supporting the needle in a cloth feeding direction (for example, refer to Patent Document 1). In the sewing machine disclosed in the above-mentioned Patent Document 1, by driving a pulse motor arranged outside the sewing machine to adjust the needle swing amount, the needle bar rocking shaft connected to the needle bar is os...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B55/14
Inventor 沟渕顺也小川达矢高濑秀纪平泽裕
Owner JUKI CORP