Non-pollution cold extruding molding method and cold extruding mould for packaging container flange

A forming method and cold extrusion technology, which are applied in the field of non-polluting cold extrusion forming methods for packaging barrel flanges and cold extrusion molds, can solve the problems of inconsistent extrusion height, prolonging the manufacturing cycle, polluting the environment, etc., and achieve mold processing Convenience, improved yield, and good fluidity

Active Publication Date: 2015-05-06
张有龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to carry out phosphating and saponification to increase the fluidity of the material in the cold extrusion process of the flange of the existing packaging container bung, and the phosphating and saponification not only pollutes the environment but also prolongs the manufacturing cycle. Due to a series of problems such as inconsistency in extrusion height and opening defects caused by surface contact, a cold extrusion punch is invented to change the material from surface extrusion to line extrusion and save phosphating. Saponification process, a pollution-free cold extrusion molding method for the flange of the packaging barrel that reduces environmental pollution, and a matching cold extrusion mold is provided at the same time

Method used

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  • Non-pollution cold extruding molding method and cold extruding mould for packaging container flange
  • Non-pollution cold extruding molding method and cold extruding mould for packaging container flange
  • Non-pollution cold extruding molding method and cold extruding mould for packaging container flange

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Experimental program
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Effect test

Embodiment 1

[0022] Such as Figure 1-5 shown.

[0023] A pollution-free cold extrusion molding method for the flange of a packaging container. First, the cold extrusion punch is improved, and the image 3 The small-diameter cylindrical action surface of the shown cold extrusion punch is changed to Figure 5 The conical active surface shown, the modified punch is mounted on the Figure 4 Start the cold extrusion equipment on the mold shown, so that the flange blank formed by blanking and forming modules with the same thickness of the flange boss can be extruded through the line contact extrusion of a punch with an upper end in the shape of an inverted cone. Function, during the extrusion process or before extrusion, cold pressure oil can be added to the punch to improve the fluidity of the material, so that the material on the flange boss can flow along the axial direction of the flange, that is, figure 1 Flange bosses shown are consistent with flange blanks extruded into figure ...

Embodiment 2

[0025] Such as Figure 4 , 5 shown.

[0026] A cold extrusion molding die, which includes an upper die 3, a mandrel 4, a die 6 and a punch 7, the mandrel 4 is installed in the upper die 3 and is offset against the punching rod 1, and the upper die 3 and the upper die 2 Connected, the upper template 2 is connected with the extrusion head of the cold extrusion equipment and moves up and down accordingly, the punch 7 is installed in the die 6, the lower part of the punch 7 is supported on the punch holder 8, and the punch holder 8 Installed on the positioning plate 10, the positioning plate 10 is installed on the lower template 11, and the lower template 11 is installed on the workbench of the cold extrusion equipment, such as Figure 4 As shown, the push rod 9 for separating the die 6 from the punch 7 to facilitate the removal of the flange semi-finished product 5 is installed in the positioning plate 10, and the upper end of the punch 7 is provided with an extrusion zone 14, ...

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Abstract

The invention discloses a non-pollution cold extruding molding method and a cold extruding mould for a packaging container flange. The method is characterized in that a flange workblank with consistent flange boss thickness, which is subjected to punch forming by blanking and molding moulds, is under the effect of a male die with reverse pyramidal upper end, materials on a flange boss axially flow along the flange, wall thickness needed by turning threads is finally formed in a flange hole, and a flange finished product is obtained by subsequent corner cut, thread turning and electroplating. The non-pollution cold extruding molding method and the cold extruding mould for the packaging container flange has the advantages that the structure is simple, the manufacturing is simple, pollution does not exist, the rate of finished products is improved, and the manufacture cost is reduced.

Description

technical field [0001] The invention relates to a manufacturing method and mold for a packaging container, especially a cold extrusion method and mold for a bung flange of a packaging container, in particular to a pollution-free cold extrusion molding method for a packaging barrel flange and a cold extrusion mold . Background technique [0002] At present, the manufacture of the bung flange of the packaging container adopts the cold extrusion process. In order to facilitate the cold extrusion molding, it needs to be phosphating and saponifying for more than half an hour after blanking and molding, and then the upper mold is used for cold extrusion. Make the material on the inner surface of the flange boss flow in the axial direction under the action of the punch in the cold extrusion die to form the required inner ring of the thread. The process of phosphating and saponification has a serious impact on the environment. A large amount of saponification will float in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/02B21D37/10
Inventor 张有龙
Owner 张有龙
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