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Tinplate tear-off lid forming process

A molding process and tinplate technology, applied in the field of tinplate easy-open lid forming technology, can solve the problems of poor rigidity and hardness of the easy-open lid, high material cost, weak impact resistance, etc., to reduce material thickness, reduce opening force, improve The effect of pressure and corrosion resistance

Inactive Publication Date: 2017-06-13
青岛北琪实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The easy open end is a cover that is pre-engraved with a score line of a certain depth and riveted with a pull ring that can be safely torn along the score line when it is opened. It is widely used in various cans, beverages and other products. The prior art The easy-open end is generally made of aluminum material or tinplate material. The easy-open end made of aluminum material has poor rigidity and hardness and weak impact resistance, while the easy-open end made of ordinary tinplate material generally has low pressure resistance and heavy opening. higher material cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The invention provides a tinplate easy-open end molding process, which includes the following steps: S1: cold rolling, the tinplate is subjected to the first cold rolling, then annealed and leveled, and then the second cold rolling, wherein the second cold rolling The rolling reduction is greater than that of the first cold rolling; S2: coil wave shearing, cutting the tinplate coil to form a wave shape, and then cutting off the edge material of the wave shape plate; S3: printing and coating, Coating the inner and outer surfaces of the plate, and then drying; S4: punching the cover, stamping the plate to form a cover blank, and stretching and cooling; S5: curling, preforming countersunk ribs on the edge of the cover blank, Then roll the edge of the cover blank inward to form the edge of the sealing ditch to form the base cover; S6: Glue, glue the edge of the base cover after the curling is completed, and then dry it; S7: Foaming, glue the center of the base cover surface ...

Embodiment 2

[0034] The invention provides a tinplate easy-open lid molding process, comprising the following steps:

[0035] S1: cold rolling, the tinplate is subjected to the first cold rolling, then annealed and leveled, and then the second cold rolling, wherein the reduction of the second cold rolling is greater than that of the first cold rolling;

[0036] S2: Coil wave cutting, using a cutting machine to cut the tinplate coil to form a wave shape, and then cut off the edge material of the wave shape plate, the cutting speed of the cutting machine is 60mm / s, and the cutting power is 3kw;

[0037] S3: Printing and coating, coating the inner and outer surfaces of the board, and then drying the coated board with a dryer. The drying is divided into three stages: preheating, constant heating and cooling. The preheating temperature is 40°, the time is 1h, the constant heating temperature is 70°, the time is 2h, the cooling temperature is 20°, the time is 0.5h;

[0038] S4: Punching the cov...

Embodiment 3

[0046] The invention provides a tinplate easy-open lid molding process, comprising the following steps:

[0047] S1: cold rolling, the tinplate is subjected to the first cold rolling, then annealed and leveled, and then the second cold rolling, wherein the reduction of the second cold rolling is greater than that of the first cold rolling;

[0048] S2: Coil wave cutting, using a cutting machine to cut the tinplate coil to form a wave shape, and then cut off the edge material of the wave shape plate, the cutting speed of the cutting machine is 70mm / s, and the cutting power is 3.5kw;

[0049] S3: Printing and coating, coating the inner and outer surfaces of the board, and then drying the coated board with a dryer. The drying is divided into three stages: preheating, constant heating and cooling. The preheating temperature is 45°, the time is 1h, the constant heating temperature is 75°, the time is 2h, the cooling temperature is 25°, the time is 0.5h;

[0050] S4: Punching the c...

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Abstract

The invention provides a tinplate tear-off lid forming process which comprises the following steps: cold rolling: carrying out preliminary cold rolling and secondary cold rolling in sequence on a tinplate; wave shearing of a coiled material: cutting a tinplate coiled material, and cutting off boundary materials of a wave-shaped plate; printing and coating: coating the inner and outer surfaces of the plate with films, and drying the films; lid punching: punching the plate to form a lid blank, and carrying out stretching and cooling; edge curling: pre-forming a countersunk rib, and inwards curling the edge of the lid blank into a closed groove edge to form a base lid; gluing: carrying out gluing and then drying; blistering: blistering the surface of the base lid for 3 times, so as to form a rivet fastener with a cavity; line engraving; riveting: riveting a pull ring with the rivet fastener on the base lid; embossing. The tinplate tear-off lid forming process has the beneficial effects that by the adoption of a tinplate material which is cold-rolled twice for manufacturing the tear-off lid, the pressure resistance and the corrosion resistance of the tear-off lid are improved, and the opening force of the tear-off lid is reduced; furthermore, the material thickness is reduced, so that the cost is reduced, and environmental protection is facilitated.

Description

technical field [0001] The invention relates to the technical field of tinplate production, in particular to a tinplate easy-open lid molding process. Background technique [0002] Tinplate is a common name for electroplated tin-plated steel plate, which refers to cold-rolled low-carbon thin steel plate or steel strip coated with commercial pure tin on both sides. Tin can prevent corrosion or rust, and can combine the strength of steel with the corrosion resistance of tin. The combination of tinplate and solderability makes tinplate have the characteristics of corrosion resistance, non-toxicity, high strength and good ductility. Therefore, due to the above characteristics of tinplate, tinplate can be widely used in the packaging industry. [0003] The easy open end is a cover that is pre-engraved with a score line of a certain depth and riveted with a pull ring that can be safely torn along the score line when it is opened. It is widely used in various cans, beverages and ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 李建民樊丽丽崔锡文
Owner 青岛北琪实业有限公司
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