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Polygonal container and method for forming same

A molding method, polygonal technology, applied in cans/barrels/barrels, other household utensils, transportation and packaging, etc., can solve the problems of polygonal cans with bottoms that cannot be formed, maintain quality and color rendering, prevent film peeling, The effect of improving portability

Active Publication Date: 2016-11-09
TOYO SEIKAN GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter method is not intended to be applied to forming bottomed polygonal cans from bottomed cylindrical cans, and bottomed polygonal cans cannot be formed by this method

Method used

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  • Polygonal container and method for forming same
  • Polygonal container and method for forming same
  • Polygonal container and method for forming same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0105] Figure 8 ~ Figure 10 An example of a polygonal can molding apparatus for implementing the polygonal can molding method of the present invention is shown.

[0106] In the figure, the part to the right from the center line shows the cross section of the corner forming part, and the part to the left shows the cross section of the straight part forming part. The polygonal tank molding device according to this embodiment is composed of an upper mold assembly 10 and a lower mold assembly 30, and both are arranged so as to be able to come into relative contact with or separate from each other along the coaxial direction. The upper die base 11 of the upper die assembly 10 is provided with a drooping inner die assembly 12 and a drooping extruding tool operating rod 25 , and an abutment head 26 is provided at the lower end of the extruding tool operating rod 25 .

[0107] The inner assembly 12 is composed of a rotating shaft 13 for forming the straight part and the bottom of a ...

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PUM

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Abstract

Obtained is a polygonal container in which an ornamentation effect equivalent to that for a cylindrical container stock is obtained without bending or distortion in the container body. The polygonal container is formed so that the bottom outer circumferential portion (A-2) of a cylindrical container stock, which is to become the straight section (B-2) of a polygonal container (B), is moved inward in the radial direction, and the bottom outer circumferential portion (A-1) of the cylindrical container stock, which is to become the corner section (B-1) of the polygonal container, is moved outward in the radial direction, whereby the body cross-section circumferential length of the cylindrical container stock and the body cross-section circumferential length of the formed polygonal container have a substantially isometric relation with each other.

Description

technical field [0001] The invention relates to a bottomed polygonal tank obtained by molding a bottomed cylindrical tank material and a molding method thereof. Background technique [0002] Conventionally, it is well known that the manufacturing method of polygonal metal cans is as follows: in the case of a two-piece can, the blank is drawn and thinned to form a cylindrical can with a bottom, and the cylindrical can is made of a square A die and a square punch form a bottomed polygonal can (for example, Patent Document 1). In addition, as another method, there is known an impact forming method in which a polygonal can with a bottom is formed in one step from a block of soft aluminum alloy using a punch and a die. In the case of a 3-piece can, the following methods are known: an extrusion molding method in which a bottomless cylindrical can material is expanded from the inside by hydraulic pressure to mold the can main body along the shape of an outer mold, or seam joining ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D51/26B65D1/18
CPCB21D51/2646B21D17/02B65D1/18B65D7/06
Inventor 小林具实松本尚也蓝原武志
Owner TOYO SEIKAN GRP HLDG LTD
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