Feed dog rack used for electronic sewing machine and machining method of feed dog rack

A processing method and sewing machine technology, which are applied to sewing machine components, sewing equipment, cloth feeding mechanisms, etc., can solve the problems that the left and right height cannot be adjusted, affect the sewing performance of the sewing machine, and the unilateral inclination of the tooth frame, etc., and achieve simple structure and convenient processing. Manufacture, the effect of prolonging the service life

Active Publication Date: 2015-01-21
重庆新锐科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The left and right positions of the traditional sewing machine tooth frame cannot be adjusted when it is working, which will cause the unilateral inclination of the tooth frame during use, which will seriously cause the partial deviation of the cloth, resulting in uneven and unsmooth feeding of the cloth, which is serious. Affects the sewing performance of the sewing machine

Method used

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  • Feed dog rack used for electronic sewing machine and machining method of feed dog rack
  • Feed dog rack used for electronic sewing machine and machining method of feed dog rack
  • Feed dog rack used for electronic sewing machine and machining method of feed dog rack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Ingredients: According to the composition and mass percentage ingredients of the aluminum-silicon-magnesium cast aluminum alloy used in the tooth frame described in Table 1, Example 1;

[0038] Melting: first add half of the aluminum ingot, after the aluminum ingot is completely melted at 730°C, add magnesium, zinc, copper and the remaining aluminum ingot until the magnesium, zinc, and copper are completely melted, when the temperature of the molten aluminum is 700°C, Then add the master alloy and stir evenly; the magnesium is pure magnesium, the zinc is pure zinc, and the copper is electrolytic copper. Alloys, aluminum-iron alloys with 7-10% iron content, aluminum-strontium alloys with 5-8% strontium content, aluminum-vanadium alloys with 6-10% vanadium content, aluminum-titanium alloys with 7-10% titanium content, antimony Aluminum antimony alloy with a content of 5-8%;

[0039] Die-casting: The smelted aluminum liquid is successively refined by deslagging and degass...

Embodiment 2

[0042] Ingredients: according to the composition and mass percentage ingredients of the aluminum-silicon-magnesium cast aluminum alloy used in the tooth frame described in Table 1, Example 2;

[0043] Melting: first add half of the aluminum ingot, after the aluminum ingot is completely melted at 750°C, add magnesium, zinc, copper and the remaining aluminum ingot until the magnesium, zinc, and copper are completely melted, when the temperature of the molten aluminum is 720°C, Then add the master alloy and stir evenly; the magnesium is pure magnesium, the zinc is pure zinc, and the copper is electrolytic copper. Alloys, aluminum-iron alloys with 7-10% iron content, aluminum-strontium alloys with 5-8% strontium content, aluminum-vanadium alloys with 6-10% vanadium content, aluminum-titanium alloys with 7-10% titanium content, antimony Aluminum antimony alloy with a content of 5-8%;

[0044] Die-casting: The smelted aluminum liquid is successively refined by deslagging and degass...

Embodiment 3

[0047] Ingredients: according to the composition and mass percentage ingredients of the aluminum-silicon-magnesium cast aluminum alloy used in the tooth frame described in Table 1, Example 3;

[0048] Melting: first add half of the aluminum ingot, after the aluminum ingot is completely melted at 780°C, add magnesium, zinc, copper and the remaining aluminum ingot until the magnesium, zinc, and copper are completely melted, when the temperature of the molten aluminum is 750°C, Then add the master alloy and stir evenly; the magnesium is pure magnesium, the zinc is pure zinc, and the copper is electrolytic copper. Alloys, aluminum-iron alloys with 7-10% iron content, aluminum-strontium alloys with 5-8% strontium content, aluminum-vanadium alloys with 6-10% vanadium content, aluminum-titanium alloys with 7-10% titanium content, antimony Aluminum antimony alloy with a content of 5-8%;

[0049] Die-casting: The smelted aluminum liquid is successively refined by deslagging and degass...

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PUM

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Abstract

The invention relates to a feed dog rack used for an electronic sewing machine and a machining method of the feed dog rack, and belongs to the technical field of sewing machines. The feed dog rack comprises a rack body, wherein the rack body is formed by a first installation portion, a second installation portion and two connection portions in a surrounding mode, the first installation portion, the second installation portion and the two connection portions are connected into a whole, and the two connection portions are symmetrically arranged between the two installation portions which are arranged in parallel. The feed dog rack is made of aluminum alloy which comprises, by mass, 6.7% to 7.8% of Si, 0.3% to 0.9% of Mg, 0.1% to 2.0% of Cu, 0.08% to 0.2% of Fe, 0.1% to 0.2% of Mn, 0.04% to 0.1% of Zn, 0.02% of Sr or less, 0.1% to 0.12% of Sb, 0.13% to 0.17% of Ti, 0.03% of V or less, and the balance aluminum and unavoidable impurities. The invention specifically discloses the machining method of the feed dog rack. The production process is simple and easy to conduct, and the obtained feed dog rack is simple in structure, high in practicability and good in comprehensive performance.

Description

technical field [0001] The invention belongs to the technical field of sewing machines, in particular to a bracket for electronic sewing machines and a processing method thereof. Background technique [0002] Sewing machine is comparatively common in daily life, and it is a kind of with one or more sewing thread, forms one or more stitches on sewing material, makes one or more layers of sewing material interweave or sew up the machine. The sewing machine can sew fabrics such as cotton, fiber crops, silk, wool, and artificial fibers, and products such as leather, plastics, and paper. [0003] With the continuous development of production and life, sewing machines are also developing in a more convenient, smarter and more beautiful direction. From old-fashioned sewing machines to electronic sewing machines, sewing machines are constantly developing. Both old-fashioned sewing machines and electric sewing machines are controlled by pedals. The sewing speed is also adjusted acco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B27/02C22C21/02B23P15/00
CPCB23P15/00C22C21/02D05B27/02
Inventor 冯光松
Owner 重庆新锐科技服务有限公司
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