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Transmission device for sewing machine parts

A transmission device and sewing machine technology, applied in the direction of sewing machine control devices, sewing machine components, sewing equipment, etc., can solve problems such as high installation and processing requirements, difficult to control noise, and large noise

Active Publication Date: 2016-06-22
ZHEJIANG DUMA SEWING MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This transmission mechanism is relatively simple, but the upper and lower bevel gear transmission pairs have high requirements for installation and processing, and the noise is large and difficult to control.

Method used

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  • Transmission device for sewing machine parts
  • Transmission device for sewing machine parts
  • Transmission device for sewing machine parts

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Embodiment Construction

[0011] Hereinafter, the invention will now be described more fully with reference to the accompanying drawings, in which various embodiments are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0012] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0013] Reference attached Figure 1-5 , the present invention provides a new type of sewing machine parts driving device, as a preferred example of the present invention, the device includes a drive motor (5), frame (10), upper main shaft (1), coupling (4) , upper bearing (3), lower main shaft (8), lower bearing (7), belt transmission pair; wherein the belt transmission pai...

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PUM

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Abstract

The invention relates to a transmission device for sewing machine parts, including a frame, an upper spindle, a lower spindle, a belt transmission system, a needle bar crank, a thread take-up connecting rod, a thread take-up support rod, a thread take-up crank part, a needle bar connecting rod, a thread take-up The connecting rod bearing, the needle bar, and the upper main shaft are installed on the top of the frame. The motor drives the upper main shaft to drive the main pulley to rotate, and drives the secondary pulley installed on the lower main shaft at the bottom of the frame to rotate through the belt drive, thereby realizing the synchronous rotation of the upper and lower main shafts; In the case of thread take-up, the movement sequence and position of the stitch mechanism are the same as the original forward running state. In the thread take-up stitch transmission mechanism, the needle bar crank, thread take-up connecting rod, and thread take-up support rod form a crank rocker mechanism, and the needle bar The crank, the thread take-up crank part, the needle bar connecting rod and the needle bar form a rotary guide bar mechanism. Under the mechanism of the present invention, the working direction of the lower main shaft remains unchanged and the time sequence of the sewing machine's cloth feeding, sewing, thread take-up and machine shuttle motion coordination remains unchanged.

Description

technical field [0001] The invention relates to a sewing machine component transmission device. Background technique [0002] The original sewing equipment transmission system mainly adopts two modes of upper and lower main shaft bevel gear transmission and belt transmission gearbox for speed change and reversing. The general direct-drive computerized lockstitch sewing machine with the bevel gear transmission of the upper and lower main shafts mainly includes: a frame, an upper main shaft, an upper bevel gear transmission pair, a vertical transmission shaft, a lower bevel gear transmission pair, and a lower main shaft. Among them, the upper main shaft, the lower main shaft, and the vertical transmission shaft are installed on the frame. The motor drives the upper main shaft to rotate through the upper bevel gear transmission pair to drive the vertical transmission shaft to rotate, and the vertical transmission shaft drives the lower main shaft through the lower bevel gear tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B69/10
Inventor 阮孟定
Owner ZHEJIANG DUMA SEWING MACHINE
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