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Tinplate two-piece can stretch-forming processing method and mold, and product thereof

A technology of deep drawing and processing method, which is applied to forming molds and their products, and deep drawing processing of tinplate two-piece cans. Good, enhanced safety, precise processing effect

Active Publication Date: 2015-12-09
英联金属科技(汕头)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to, aiming at the above-mentioned deficiencies in the prior art, provide a kind of tinplate two-piece can deep-drawing forming processing method, forming mold and its products, and use new technology, mold, material and surface treatment technology to break through the preparation of large diameter The technical limitations of tinplate two-piece cans, enhance the capacity, sealing, safety, and convenience of the cans, so as to solve the problem that the existing tinplate two-piece cans only have shallow drawing and deep drawing, resulting in too small tank capacity and easy to tear lids with iron rings. Lead to problems such as poor sealing of the tank, providing more environmentally friendly and safer food packaging containers

Method used

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  • Tinplate two-piece can stretch-forming processing method and mold, and product thereof
  • Tinplate two-piece can stretch-forming processing method and mold, and product thereof
  • Tinplate two-piece can stretch-forming processing method and mold, and product thereof

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Embodiment 1

[0044] Embodiment 1: The deep-drawing and forming processing method of a tinplate two-piece can provided in this embodiment comprises the following steps:

[0045] (1) Plate preparation:

[0046] Prepare the tinplate sheet, punch the sheet into a round billet with a thickness of 0.2 to 0.3 mm, and apply lubricant evenly on both sides of the round billet;

[0047] (2) Pre-drawn cup:

[0048] Set the first drawing die (see attached image 3 ), blanking and punching cans, with the cooperation of the upper die drawing core and the lower die drawing core, the pressure sleeve is used to press the periphery of the sheet, and when the upper die is punched down, shrinkage plastic deformation flow occurs in the circumferential direction of the sheet, To compensate for the longitudinal deformation of the drawing periphery, the binder sleeve presses the periphery of the sheet to limit the wrinkling of the sheet during punching, the thinning of the side wall of the tank, the bottom is fo...

Embodiment 2

[0066] Embodiment 2: The tinplate two-piece can deep-drawing forming processing method, molding die and products thereof provided by this embodiment are basically the same as Embodiment 1, except that:

[0067] Preferably, the UV paint film layer is made of the following components in parts by mass: 20 parts of thermoplastic acrylic resin, 12 parts of isophorone diisocyanate, 4 parts of acrylic polyol, 1,6-hexanedi 1 part of acid diacrylate, 6 parts of silane coupling agent, 5 parts of organic solvent, and 1 part of calcium carbonate.

[0068] The lubricant is a volatile lubricant, which is prepared from the following components in parts by mass: 18 parts of glycerol monohexadecanoate, 10 parts of glycerol monolaurate, 8 parts of fatty acid ester, 9 parts of volatile hydrocarbon solvent.

Embodiment 3

[0069] Embodiment 3: The tinplate two-piece can deep-drawing processing method, molding die and products thereof provided in this embodiment are basically the same as in Embodiment 1, except that:

[0070] Preferably, the UV paint film layer is made of the following components in parts by mass: 21 parts of thermoplastic acrylic resin, 10 parts of isophorone diisocyanate, 5 parts of acrylic polyol, 1,6-hexanedi 2 parts of acid diacrylate, 5 parts of silane coupling agent, 8 parts of organic solvent, 3 parts of calcium carbonate.

[0071] The lubricant is a volatile lubricant, which is prepared from the following components in parts by mass: 15 parts of glycerol monohexadecanoate, 14 parts of glycerol monolaurate, 10 parts of fatty acid ester, 5 parts of volatile hydrocarbon solvent.

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Abstract

The invention relates to the technical field of metal packaging, and particularly discloses a tinplate two-piece can stretch-forming processing method which comprises the following steps: (1) plate preparation; (2) cup pre-stretch-forming; (3) cup secondary stretch-forming; and (4) stretch forming and neck expansion by flanging. The invention also discloses a special mold adopted by the tinplate two-piece can stretch-forming processing method and a tinplate two-piece can prepared by the special mold. The method breaks through the limitations in the existing tinplate two-piece can for food through the innovation on the mold, technique and material; and the diameter of the can body can reach 105mm, and the stretch-forming height is 51.5mm or above. The method has the advantages of accurate technique, fewer steps, low cost and high safety, is free of cleaning, obviously enhances the sealability and safety of the can body, saves the cost, lowers the technical complexity, and can not have the phenomenon of material stretch-forming cracking. The tinplate two-piece can can not be scratched when in use, and can be widely used in packaging canned food and other types of food.

Description

technical field [0001] The invention relates to the technical field of metal packaging, in particular to a method for deep-drawing and forming a tinplate two-piece can, a forming mold and a product thereof. Background technique [0002] The cans used in the market are generally formed by deep drawing of aluminum alloy, or riveted and welded with tinplate, and some have begun to use pure aluminum to make cans. The earliest thinned and drawn two-piece cans were thinned and drawn two-piece aluminum cans, and later thinned and drawn tinplate (tinplate) two-piece cans appeared. [0003] At present, in the can industry for food packaging, there are three-piece cans and two-piece cans. The three-piece cans are mainly made of tinplate. Sealing, the top sealing after filling the content is made of aluminum easy-open lid, the three-piece can is mainly used for products with a high tank body; the material of the two-piece can is mainly made of aluminum plate through stamping, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/20B21D37/10B21D51/26C09D4/02C09D4/06
Inventor 黎泽棉许永明
Owner 英联金属科技(汕头)有限公司
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