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Component transmission gear of sewing machine

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

Active Publication Date: 2014-02-05
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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  • Component transmission gear of sewing machine
  • Component transmission gear of sewing machine
  • Component transmission gear of sewing machine

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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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Abstract

The invention relates to a component transmission gear of a sewing machine. The component transmission gear comprises a frame, an upper spindle, a lower spindle, a belt transmission system, a needle bar crank, a take-up connecting rod, a take-up strut, a take-up crank component, a needle bar connecting rod, a take-up connecting rod bearing and a needle bar, wherein the upper spindle is arranged on the upper part of the frame; a motor drives the upper spindle so as to drive a main belt pulley to rotate, a driven belt pulley on the lower spindle of the lower part of the frame is driven to rotate through belt transmission, so that the synchronous rotation of the upper spindle and the lower spindle is realized. According to the component transmission gear, through a take-up pin transmission mechanism, the motion time sequence and the position of the take-up pin transmission mechanism are ensured to be the same as the original forward operation state under the condition of inversion of the motor, a crank and rocker mechanism is formed by the needle bar crank, the take-up connecting rod and the take-up strut in the take-up pin transmission mechanism, and meanwhile, a turning-block linkage is formed by the needle bar crank, the take-up crank component, the needle bar connecting rod and the needle bar. By adopting the component transmission gear, the working rotation direction of the lower spindle, and the motion matching time sequence of cloth feeding, sewing, take-up and shuttling of the sewing machine are 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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IPC IPC(8): D05B69/10
Inventor 阮孟定
Owner ZHEJIANG DUMA SEWING MACHINE
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