Presser foot fixer of sewing machine and preparation method thereof

A technology of presser foot and fixer, which is applied to sewing equipment, sewing machine components, presser mechanism, etc., can solve the problems of poor processing quality, high surface quality requirements, and many processing parts, etc. The effect of good quality and less process

Inactive Publication Date: 2014-03-26
NINGBO RUIMING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sewing machine presser foot holder is a special-shaped part, with many processing parts, high surface quality requirements, poor processing quality, and many problems in production.
At present, the quality of the sewing machine presser foot holder in my country is far from that of foreign countries, and it is not competitive in the international market, and the price is very low.

Method used

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  • Presser foot fixer of sewing machine and preparation method thereof
  • Presser foot fixer of sewing machine and preparation method thereof
  • Presser foot fixer of sewing machine and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] According to the components and mass percentages of Example 1 in Table 1, add aluminum, zinc, and copper into the electric furnace and heat it to 360°C to melt it. After it is completely melted, press magnesium into it with a bell jar. After the magnesium is completely melted, stir the alloy solution. , After standing still for 10min, carry out slag removal. Afterwards, the metal liquid is stamped and die-casted under the condition of a pressure of 90MPa to obtain the blank of the sewing machine presser foot holder, and then the sewing machine presser foot holder blank is subjected to finishing machining, vibration grinding, and the sewing machine presser foot holder blank Metal Cu with a thickness of 8 μm is electroplated on the surface of the blank, metal Ni with a thickness of 8 μm is electroplated on Cu, and metal Cr with a thickness of 0.3 μm is electroplated on the Ni layer. Finally, the processed sewing machine presser foot holder blank, buttons and positioning p...

Embodiment 2

[0038] According to the components and mass percentages of Example 2 in Table 1, add aluminum, zinc, and copper into the electric furnace and heat it to 380°C to melt it. After it is completely melted, press magnesium into it with a bell jar. After the magnesium is completely melted, stir the alloy solution. , carry out slag removal after standing for 5min. Afterwards, the metal liquid is stamped and die-casted under the condition of a pressure of 85MPa to obtain the blank of the sewing machine presser foot holder, and then the sewing machine presser foot holder blank is subjected to finishing machining, vibration grinding, and the sewing machine presser foot holder blank Metal Cu with a thickness of 10 μm is electroplated on the surface of the blank, metal Ni with a thickness of 9 μm is electroplated on Cu, and metal Cr with a thickness of 0.5 μm is electroplated on the Ni layer. Finally, the processed sewing machine presser foot holder blank, buttons and positioning parts ar...

Embodiment 3

[0040] According to the components and mass percentages of Example 3 in Table 1, add aluminum, zinc, and copper into the electric furnace and heat it to 400°C to melt it. After it is completely melted, press magnesium into it with a bell jar. After the magnesium is completely melted, stir the alloy solution. , After standing still for 8 minutes, carry out slag removal. Afterwards, the metal liquid is stamped and die-casted under the condition of a pressure of 88MPa to obtain the blank of the sewing machine presser foot holder, and then the sewing machine presser foot holder blank is subjected to finishing machining, vibration grinding, and the sewing machine presser foot holder blank. Metal Cu with a thickness of 12 μm is electroplated on the surface of the blank, metal Ni with a thickness of 10 μm is electroplated on Cu, and metal Cr with a thickness of 0.8 μm is electroplated on the Ni layer. Finally, the processed sewing machine presser foot holder blank, buttons and positi...

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Abstract

The invention relates to a presser foot fixer of a sewing machine and a preparation method thereof. The presser foot fixer is made of a zinc alloy, and a metal coating is plated on the surface of the zinc alloy. The zinc alloy comprises components in percentage by weight as follows: 3.80 %-4.00% of Al, 0.01%-0.04% of Mg, 1.0%-1.2% of Cu, smaller than or equal to 0.02% of Fe, smaller than or equal to 0.002% of Pb, smaller than or equal to 0.002% of Cd, smaller than or equal to 0.0008% of Sn and the balance of Zn. The preparation method comprises steps as follows: metal is melted into an alloy solution which is subjected to stirring, slagging off, stamping and die casting to obtain a presser foot fixer blank; then finish machining and vibration milling are performed, and metal Cu, Ni and Cr are electroplated in sequence on the blank surface; and finally, the blank, a button and a locating piece are assembled into the presser foot fixer of the sewing machine. The presser foot fixer of the sewing machine has the advantages of better mechanical property, abrasion resistance and corrosion resistance, higher surface quality and longer service life.

Description

technical field [0001] The invention relates to a sewing machine accessory and a preparation method thereof, in particular to a sewing machine presser foot fixer and a preparation method thereof, belonging to the field of mechanical technology. Background technique [0002] The quality of sewing machine parts directly affects the quality of garment sewing and the performance and service life of the whole machine. The presser foot holder of the sewing machine is a special-shaped part, with many processing parts, high surface quality requirements, poor processing quality, and many problems in production. At present, the quality of my country's sewing machine presser foot holder is far from that of foreign countries, and it has no competitiveness in the international market, and the price is very low. This not only greatly affects the economic benefits of sewing machine manufacturers, but also affects the development of the entire garment industry in our country. Therefore, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C18/04C22C1/02C25D5/14D05B29/12
Inventor 冯光松
Owner NINGBO RUIMING MACHINERY
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