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Impact extrusion formed article, impact extrusion forming method, and impact extrusion forming device

A stamping forming and stamping die technology, applied in the field of stamping and forming equipment, can solve problems such as affecting the appearance of products 3

Inactive Publication Date: 2005-06-22
FURUKAWA SKY ALUMINUM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the surface treatment is not performed to coat the surface of the product 3, or particularly when anodizing is performed on the product 3, the region 3a having a different state remains, and as a result, the quality of the product 3 is adversely affected. Exterior

Method used

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  • Impact extrusion formed article, impact extrusion forming method, and impact extrusion forming device
  • Impact extrusion formed article, impact extrusion forming method, and impact extrusion forming device
  • Impact extrusion formed article, impact extrusion forming method, and impact extrusion forming device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0047] figure 1 is a schematic partial sectional view showing a first embodiment of the press forming apparatus according to the present invention. figure 2 and 3 is shown in the figure 1 A partial cross-sectional schematic view of an extrusion-molded semi-finished product of the apparatus in the first embodiment shown in . Figure 4 yes image 3 An enlarged cross-sectional schematic view of the tip portion of the punch shown in . Figure 5 is a sectional view of an extrusion molded product.

[0048] figure 1 Among them, similar to conventional equipment, the die 1 and the punch 2 are attached to the die holder 10 and the punch holder 20, respectively.

[0049] Openings 11 and 12 having the same diameter and communicating with each other are formed to penetrate the bottom of the mold 1 and the bottom of the mold holder 10, respectively. A push rod 50 is provided to slide in these openings 11 and 12 and an opening / closing device 5 is provided at the top end of the pu...

no. 2 example

[0068] Figure 6 is a partially sectional schematic view showing a second embodiment of the molding apparatus according to the present invention. The back pressure applying device 6 includes a cam having a cam shaft 64 . The other components of the molding device in the second embodiment and their functions and advantages are basically the same as those in the molding device in the first embodiment, and will not be described again here.

no. 3 example

[0070] Figure 7 is a schematic partial sectional view showing a third embodiment of the molding apparatus according to the present invention.

[0071] In the third embodiment, an appropriate number of buffer pins 22 are attached to the lower peripheral portion of the punch holder 20 . The buffer pins 22 are constructed in the following manner: when the punch 2 is lowered, the corresponding buffer pins 22 descend; the lower ends of the buffer pins 22 project downward from the guide holes 13 formed in the die holder 10 respectively; The cushion pad 65 is pushed down, thereby releasing the back pressure applied to the opening / closing device 5 . In this embodiment, there is no need for figure 1 Pressure sensor 7 and position sensor 8 are shown in.

[0072] The other components of the molding device in this embodiment and their functions and advantages are basically the same as those of the molding device in the first embodiment, and will not be described again here.

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PUM

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Abstract

Provided are a press molded product which is molded while suppressing the flow of metal from the bottom of a blank set in a die to the side of the molded product; and a press forming method for manufacturing A stamping molded product, and a stamping forming apparatus suitable for the stamping forming method.

Description

technical field [0001] The present invention relates to a press-molded product, for example, a casing of a small-sized device such as a portable game machine, a cellular phone, and the like, a press-forming method, and a press-forming apparatus for molding the product. Background technique [0002] The following will refer to Figure 15 and Figures 16(a) to 16(c) The conventional press forming method is explained. It should be noted that the same reference numerals denote the same constituent parts throughout the drawings. Figure 15 It is a partial cross-sectional schematic diagram of traditional stamping and forming equipment. Fig. 16(a) is a front view of a blank (slug), which is a material; Fig. 16(b) is a sectional view of a semi-finished product (intermediate molded product); Fig. 16(c) is a perspective view of a molded product (product ). [0003] exist Figure 15 Among them, the die 1 is attached to the die holder 10, and the punch 2 is attached to the punch hold...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/18B21J9/20
CPCB21C23/186B21J9/20B21C23/18
Inventor 小仓健一上野诚三细川俊之枝义弥
Owner FURUKAWA SKY ALUMINUM CORP
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