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Two-gear type stitch length adjusting device of sewing machine

An adjustment device and two-stop technology, which is applied in the direction of sewing machine components, sewing equipment, cloth feeding mechanism, etc., can solve the problem that the stitch distance adjustment mechanism cannot meet the market demand, etc., and achieve convenient stitch distance adjustment, wide application and reasonable design Effect

Inactive Publication Date: 2013-01-30
ZHEJIANG SHANGGONG GEM SEWING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adjustment mechanism can realize the stitch distance adjustment, but the stitch distance of the adjustment mechanism can only be adjusted within a small range
However, there are high-efficiency sewing operations that require changing the thickness of the material on the same sewing machine, so the traditional stitch pitch adjustment mechanism cannot meet the market demand.

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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  • Two-gear type stitch length adjusting device of sewing machine
  • Two-gear type stitch length adjusting device of sewing machine
  • Two-gear type stitch length adjusting device of sewing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, the two-speed stitch adjustment device of the sewing machine of the present invention is arranged on the lower shaft 1, and includes a stitch adjustment wheel 2, a stitch adjustment ratchet 4, a stitch adjustment slider 5, an elastic positioning structure, a limit structure, Eccentric sleeve 9, cloth feeding cam 3, guiding mechanism and operating components.

[0041] Such as Figure 5 and Figure 6 As shown, the needle gauge adjustment wheel 2 includes a first stage 21 and a second stage 22. The first stage 21 is a cylindrical eccentric wheel, and the end surface of the second stage 22 is provided with a chute 22c perpendicular to the centerline. On the outer peripheral surface of the stage two 22, there is an open groove 22d along its axial direction, the open groove 22d is located at one end of the chute 22c and communicates with the chute 22c, and the bottom of the open groove 22d is provided with a...

Embodiment 2

[0058] This embodiment is similar in structure and function to Embodiment 1, wherein the inner side of the cloth feeding cam seat 10 has a positioning surface 1, and the lower shaft 1 is correspondingly provided with a positioning surface 2 cooperating with the positioning surface 1. The cloth feeding cam seat 10 forms a fixed connection with the lower shaft 1 through the matching positioning surface 1 and positioning surface 2, and two V-shaped scoring lines 10c are engraved on the connecting section 10b of the cloth feeding cam seat 10, which are respectively aligned with the V-shaped scale Line 22e contrast is used for large and small gear selection.

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Abstract

The invention provides a two-gear type stitch length adjusting device of a sewing machine, which belongs to the technical field of machines and can solve the problems that the existing stitch length adjusting mechanism has a small adjustment range and can not carry out gear-shift adjustment. The two-gear type stitch length adjusting device of the sewing machine comprises a stitch length regulating wheel which is sheathed on a lower shaft and eccentric and a feed cam, one end of the feed cam is sheathed on the stitch length regulating wheel, a guide mechanism for leading the feed cam to slip is arranged between the other end of the feed cam and the lower shaft, a stitch length regulating ratchet wheel is detachably connected on the lower shaft, and a ratchet is arranged on the stitch length regulating ratchet wheel; and a stitch length regulating sliding block which can slip radially relative to the stitch length regulating wheel is arranged between the stitch length regulating wheel and the stitch length regulating ratchet wheel, wheel teeth are arranged on the stitch length regulating sliding block, and the wheel teeth can be meshed with the ratchet through an elastic positioning mechanism. The two-gear type stitch length adjusting device can carry out stitch length adjustment in two positions and has the two-gear stitch length adjusting range, thereby meeting the needs of different sewing operations on the same sewing machine.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a sewing machine, in particular to a two-speed needle distance adjusting device used on the sewing machine. Background technique [0002] When sewing on a sewing machine, it is usually necessary to adjust the stitch distance of the machine needle according to different sewing operations (the stitch distance is also called the stitch distance, which refers to the distance between the adjacent traces pierced by the machine needle on the sewing material) , and the stitch distance is determined by the horizontal movement of the cloth feed dog, so in order to meet the needs of actual production, an adjustment mechanism that can adjust the horizontal movement of the cloth feed dog has appeared on the market. [0003] The traditional adjustment mechanism includes an inner eccentric wheel set on the rotating shaft, an outer eccentric wheel sleeved on the inner eccentric wheel and a cloth...

Claims

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B27/00D05B27/02D05B21/00
Inventor 周大伟孙要武陈军省
Owner ZHEJIANG SHANGGONG GEM SEWING TECH CO LTD
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