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A kind of sewing machine presser foot and preparation method thereof

A presser foot and sewing machine technology, applied in the direction of sewing machine components, presser mechanism, sewing equipment, etc., can solve the problems of high surface quality of presser foot, poor processing quality guarantee, no competitiveness, etc., and achieve easy mechanization and Automation, weakening adverse effects, and realizing the effects of mechanization and automation

Inactive Publication Date: 2016-01-06
NINGBO RUIMING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface quality of the presser foot is high, the processing quality is not guaranteed, and there are many problems in production
At present, the quality of sewing machine presser feet in my country is far from that of foreign countries, and they are not competitive in the international market, and the price is very low.

Method used

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  • A kind of sewing machine presser foot and preparation method thereof
  • A kind of sewing machine presser foot and preparation method thereof
  • A kind of sewing machine presser foot and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 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 molten metal is stamped and die-casted under the condition of a pressure of 90 MPa to obtain the pressing plate and pressing rod of the sewing machine presser foot, and then the pressing plate and pressing rod are subjected to finishing machining, vibration grinding, and a layer of thickness is electroplated on the surface of the pressing plate and pressing rod Metal Ni of 15 μm. Finally, the processed press plate and press bar are assembled into the final product sewing machine presser cloth foot.

Embodiment 2

[0036] 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 pressing plate and pressing bar of the sewing machine presser foot, and then the pressing plate and pressing bar are subjected to finishing, vibration grinding, and a layer of thickness is plated on the surface of the pressing plate and pressing bar. Metal Ni of 20 μm. Finally, the processed press plate and press bar are assembled into the final product sewing machine presser cloth foot.

Embodiment 3

[0038] 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 molten metal is stamped and die-casted under the condition of a pressure of 88 MPa to obtain the pressing plate and pressing bar of the sewing machine presser foot, and then the pressing plate and pressing bar are subjected to finishing machining, vibration grinding, and a layer of thickness is electroplated on the surface of the pressing plate and pressing bar. Metal Ni of 18 μm. Finally, the processed press plate and press bar are assembled into the final product sewing machine presser cloth foot.

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Abstract

The invention relates to a presser foot of a sewing machine and a preparation method thereof. The presser foot is prepared from a zinc alloy, and a metal coating Ni is plated on the surface of the zinc alloy; the zinc alloy comprises the following components by weight: 3.80 to 4.00% of Al, 0.03 to 0.04% of Mg, 1.0 to 1.2% of Cu, no more than 0.02% of Fe, no more than 0.002% of Pb, no more than 0.002% of Cd and no more than 0.0008% of Sn, with the balance being Zn. The preparation method comprises the following steps: fusing above-mentioned metals to obtain an alloy solution; carrying out stirring and slag removal; then carrying out stamping and die casting so as to obtain a pressure plate and a pressure bar of the presser foot of the sewing machine; carrying out refining and vibration grinding; electroplating metallic Ni on the surfaces of the pressure plate and the pressure bar; and assembling the pressure plate and the pressure bar so as to obtain the presser foot of the sewing machine. The presser foot of the sewing machine prepared in the invention has good mechanical properties, wear resistance and corrosion resistance, high surface quality and a long 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 and a preparation method thereof, belonging to the field of mechanical technology. Background technique [0002] The sewing machine is mainly composed of four parts: machine head, machine base, transmission and presser foot. Among them, the function of the presser foot is to press the cloth tightly on the feed dog so that the cloth can be moved during sewing. The quality of the sewing machine presser foot directly affects the quality of garment sewing and the performance and service life of the whole machine. The surface quality of the presser foot is high, the processing quality is not guaranteed, and there are many problems in production. At present, the quality of sewing machine presser feet in my country is far from that of foreign countries, and they are not competitive in the international market, and the price is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/04C25D3/12B22D18/02D05B29/06
Inventor 冯光松
Owner NINGBO RUIMING MACHINERY
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