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Differential material feeding device of sewing machine

A feeding device and sewing machine technology, applied in the direction of sewing machine control devices, sewing machine components, sewing equipment, etc., can solve the problems affecting the normal adjustment of differential feed, large friction between forks and sliding parts, and wear of forks and sliding parts and other problems, to achieve the effect of small strength, simple and compact structure, and stable transmission

Inactive Publication Date: 2007-04-18
ZOJE SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that such a structure makes the friction force between the fork and the sliding part larger, and it is more laborious during the operation.
Of course, after a period of use, there may be wear between the fork and the sliding member, which will affect the normal adjustment of the differential feed amount

Method used

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  • Differential material feeding device of sewing machine
  • Differential material feeding device of sewing machine
  • Differential material feeding device of sewing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] As shown in Figure 1, the differential feeding device of this sewing machine is set at the frame 1 of the sewing machine, through which the differential feeding can be realized so that the collar of the T-shirt, the overlock of the cuff of the clothes, and the seam of the hem of the long cuff Class parts are sewed.

[0037] The differential feeding device of the sewing machine includes a power main shaft 4, a transmission shaft 5, a feeding tooth 2a, a differential tooth 3a and the like. In this embodiment, the power main shaft 4 is fixedly connected with a pulley, and the motor drives the power main shaft 4 to rotate through the belt. The feed dog 2a is fixedly connected to the feed dog frame 2, the differential tooth 3a is fixedly connected to the differential dog frame 3, and both the feed dog frame 2 and the differential dog frame 3 are on the frame 1 of the sewing machine.

[0038] The power spindle 4 drives the transmission shaft 5 to rotate through the transmiss...

Embodiment 2

[0051] The mechanism and principle of this embodiment are basically the same as that of Embodiment 1, the difference is that the differential mechanism is a differential handle 6, one end of which is fixedly connected to the transmission shaft 5, and the other end is provided with a bar-shaped hole 6a , the above-mentioned differential tooth frame 3 is provided with a protruding head 3b, and the protruding head 3b is located in the bar-shaped hole 6a, as shown in FIG. 3 .

Embodiment 3

[0053] The mechanism and principle of this embodiment are basically the same as that of Embodiment 1, the difference is that the feeding mechanism is a feeding handle 8, one end of the feeding handle 8 is fixedly connected to the transmission shaft 5, and the other end is provided with a strip hole 8a, the above-mentioned A protruding head 2b is provided on the feeding dog frame 2, and the protruding head 2b is located in the strip-shaped hole 8a, as shown in FIG. 4 .

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Abstract

The invention offers a differential feeder of sewing machine, which belongs to the field of mechanical technique. It solves problems of laboursome operation and low stability of existing technique. The device contains feed dental frame and differential dental frame which are set on framework of sewing machine. There are feed tooth and differential tooth on feed dental frame and differential dental frame separately. The sewing machine also has power main shaft and drive shaft. Power main shaft drives drive shaft to roll by drive structure. Feed structure is set between drive shaft and feed dental frame, which can translate feed dental frame on framework with drive shaft rotating. There is no similar differential structure between drive shaft and differential dental frame. The differential feeder has simple and compact structure, high using stability and simple processing production.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a sewing machine, in particular to a differential feeding device on the sewing machine. Background technique [0002] The collar of the T-shirt, the overlock of the cuffs of the clothes, the hem seams of the long cuffs and the like are all manually sewed by the operator on a common sewing machine. It can be seen that this makes the sewing strength high, and the work efficiency is relatively low. [0003] Through long-term exploration and research, in view of the problems mentioned above, people set differential feeding device on the sewing machine, and realize differential feeding by it, thereby reducing work intensity and improving work efficiency. [0004] For example, Chinese Patent No. 87206463.8 provides a "differential feeding device for a cylindrical table top sewing machine", which includes an active tooth frame and a differential tooth frame installed on the sewing mach...

Claims

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Application Information

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IPC IPC(8): D05B27/08D05B69/02
Inventor 张春木王挺蔡景眼
Owner ZOJE SEWING MASCH CO LTD
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