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Multi-needle-bar sewing machine

A technology for sewing machines and multi-needle bars, which is applied to sewing machine components, needle holders for sewing machines, sewing equipment, etc., can solve the problems of high manufacturing cost, high machining accuracy, complex structure of double-needle bars, etc., and achieve the effect of simple structure.

Active Publication Date: 2013-10-16
NINGBO SUPREME ELECTRONIC MASCH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of the double-needle bar is complicated, and the processing precision is high, so the manufacturing cost is high; and when sewing patterns of three or more colors, it is still necessary to manually change the thread

Method used

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  • Multi-needle-bar sewing machine
  • Multi-needle-bar sewing machine
  • Multi-needle-bar sewing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0038] This embodiment is based on Embodiment 1, and the driving mechanism has been improved. Such as image 3 As shown, the driving mechanism of this embodiment includes a motor 7 , a gear 71 connected to the motor 7 , and a rack 72 arranged on the needle bar mounting frame 5 and meshed with the gear 71 . By controlling the rotation angle of the motor 7, the needle bar installation frame 5 can be controlled to move among the three travel positions, so as to select the corresponding needle bar 4 to snap into the slot 3a. For the driving mechanism in this embodiment, the needle bar installation frame 5 can also be moved between two or more travel positions, so as to adapt to needle bar groups with different numbers of needle bars.

Embodiment 3

[0040] In this embodiment, on the basis of Embodiment 1, the number of needle bars in the needle bar group is reduced to two. The driving mechanism adopts an air cylinder to control the movement of the needle bar installation frame 5 between two stroke positions.

Embodiment 4

[0042] In this embodiment, on the basis of Embodiment 1, the number of needle bars in the needle bar group is increased to four. The driving mechanism adopts a structure in which three cylinders are connected in a straight line, so that the needle bar installation frame 5 can be controlled to move between four stroke positions. Each cylinder of the drive mechanism can also guide its movement through the guide rail and slider structure.

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Abstract

The invention discloses a multi-needle-bar sewing machine which is provided with at least two needle bars. A double-needle-bar structure or a three-needle-bar structure or a four-needle-bar structure is preferably adopted, and the problems that as for an existing sewing machine, upper thread color kinds are not enough in the pattern sewing process, and threads need to be replaced manually are solved. According to the multi-needle-bar sewing machine, a guide groove is adopted to guide each needle bar, therefore, a driving mechanism can conveniently convey a specific needle bar into a clamping groove of a needle bar clamping seat, the specific needle bar is made to be in linkage with an upper shaft and a needle-bar-driven connecting bar assembly to perform sewing work, and the multi-needle-bar sewing machine has the advantages of being simple in structure and controlled in an automated mode.

Description

technical field [0001] The invention relates to a sewing machine, in particular to a multi-needle bar sewing machine. Background technique [0002] Existing sewing machines usually include an upper shaft. The upper shaft drives a needle bar to move up and down through the needle bar drive link assembly. The lower thread on the top is used to sew the fabric. With the improvement of sewing processing requirements, sometimes it is necessary to use upper threads of different colors for sewing on fabrics. In this way, it is necessary to manually change the thread during sewing processing, which is cumbersome to operate, resulting in low sewing processing efficiency. [0003] Utility model name: needle bar of double-needle sewing machine and its switching mechanism, application number: 201120342948, discloses a needle bar of double-needle sewing machine and its switching mechanism, the needle bar includes a hollow needle bar body, the lower end of the needle bar body is fixedly c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B55/10D05B55/16
Inventor 罗千
Owner NINGBO SUPREME ELECTRONIC MASCH INC
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