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A processing method of a shoe last positioning pin

A processing method and positioning pin technology, applied in metal processing equipment, manufacturing tools, forging/pressing/hammering machinery, etc., can solve problems such as low efficiency and material waste, achieve high material utilization, remove burrs, and reduce waste products rate effect

Active Publication Date: 2019-01-18
林全星
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional milling causes material waste and low efficiency. In order to process such positioning pins, a material-saving and high-efficiency processing method is needed.

Method used

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  • A processing method of a shoe last positioning pin
  • A processing method of a shoe last positioning pin
  • A processing method of a shoe last positioning pin

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] like Figure 1-Figure 6 As shown, a processing method for shoe last positioning pins includes the following processing steps in sequence: (1), cutting the wire blank into several sections of rod blanks 1; (2), placing the rod blank 1 on the first lower die In 21, the first upper mold 31 is driven by the cold heading machine to upset one end of the bar blank 1 to form a cylindrical first blank 4, the first lower mold 21 includes a cylindrical first cavity 211, and the first upper The mold 31 has a straight lower end surface; (3), place the first blank 4 in the second lower mold 22, and drive the second upper mold 32 to stamp one end of the first blank 4 through the cold heading machine to form a ring-shaped The second blank 5 of the flange 51 and the circular positioning groove 52, the diameter of the circular positioning groove 52 is smaller than the diameter of the second blank 5, and is located in the middle of the second blank 5, and the second lower mold 22 includes...

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PUM

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Abstract

The invention discloses a shoe tree locating pin processing method. The shoe tree locating pin processing method comprises the following steps of 1, cutting a wire rod blank into a plurality of sections of rod piece blanks; 2, putting one rod piece blank into a first lower die and conducting upsetting on one end of the rod piece blank through a first upper die to form a first blank; 3, putting thefirst blank into a second lower die and conducting stamping on one end of the first blank through a second upper die to form a second blank; 4, putting the second blank into a third lower disposed and conducting stamping and stretching on one end of the second blank through a third upper die to form a third blank; 5, putting the third blank into a fourth lower die and conducting stamping and stretching on one end of the third blank through a fourth upper die to form a fourth blank; 6, conducting punching on the fourth blank to form a fifth blank with a through hole; and 7, grinding and polishing the outer surface of the fifth blank. By means of the scheme, the defects in the prior art are overcome. By means of the shoe tree locating pin processing method provided by the invention, the processing efficiency is high, and the cost is saved.

Description

technical field [0001] The invention relates to a processing method of a shoe last positioning pin. Background technique [0002] Shoe last is the matrix of shoes, the forming mold of shoes, also called shoe tree. The shoe last not only determines the shape and style of the shoe, but also determines whether the shoe fits and protects the foot. In the process of shoe molding, the shoe last needs to be positioned. Generally, in order to simply locate the shoe last and facilitate disassembly, positioning pins are often used to locate the shoe last. [0003] This type of locating pin includes a pin body. A cylindrical cavity is opened in the pin body. The cavity extends to the tail end of the pin body. The outer surface of the end is provided with an annular convex edge, and the outer surface of the pin body is also provided with ribs or bumps, so as to facilitate the pressure positioning of the pin body during installation. Conventional milling causes material waste and low ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/08B21J5/02B21J5/00B21J13/02
CPCB21J5/00B21J5/02B21J5/08B21J13/02
Inventor 林全星
Owner 林全星