Preparation method for manufacturing tin products without parting line by extrusion of tin liquid

Abstract

The invention creatively discloses a preparing method for manufacturing a joint-line-free tin product through molten tin extrusion. The method comprises following steps: firstly, a female die is manufactured; secondly, a silicon rubber die is manufactured; thirdly, an upper die, a middle pressure cover, a lower die and a carrier block matched with the silicon rubber die are manufactured; fourthly, a tin product is machined, wherein the silicon rubber die is preheated, a die removing agent is sprayed, then, the silicon rubber die is put into a lower die mold cavity, quantitative molten tin is injected into a cavity of the silicon rubber die, the middle pressure cover descends and presses a seal lower die and the silicon rubber die, the upper die descends to extrude the molten tin, after extrusion is finished, pressure maintaining is carried out, and a tin product is subject to extrusion molding; the upper die is reset, and the middle pressure cover is reset; the carrier block ascends and jacks the silicon rubber die and the tin product, and after die removal, the carrier block descends to be reset; an air pipe is inserted into an upper opening of the silicon rubber die for air blowing, and the tin product is rapidly separated from the silicon rubber die, and the tin product is taken out. By the adoption of the structure, the beneficial effects of being convenient to produce and machine, high in work efficiency, good in product quality, free of joint line, precise in appearance and the like are achieved.

Description

technical field [0001] The invention relates to a manufacturing technology of tin products, in particular to a preparation method for producing tin products without parting lines by means of liquid tin extrusion manufacturing technology. Background technique [0002] Metallic tin is a soft metal with a low melting point and strong plasticity. Tin products are traditional, elegant, luxurious, beautiful and practical metal crafts, mainly including tableware, wine set, tea set, sacrificial set, stationery, smoking set, coffee set, vase, trophies, decorations, etc. It is made of high-purity refined tin through multiple complex processes. As early as more than a thousand years ago, tea cans made of tin were used to store tea and exported to Japan and Southeast Asia. Due to the strong airtightness of tin, it has excellent freshness preservation and can keep the freshness and fragrance of tea for a long time. At present, the manufacture of tin products such as round, polygonal, a...

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Problems solved by technology

For this reason, many research institutes, manufacturers and people of insight have developed and developed, but so far no ideal manufacturing method has come out.

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