Production process and production device for lampshade of light box

Abstract

The invention discloses a production process and production device for a lampshade of a light box. According to the production device, a female die is placed up; when the lampshade of the light box is blow-molded, blank is subjected to elastic compression to be pre-positioned, and is stretched towards the inner cavity of the female die; and the blank is compressed downwards to be positioned by the female die. According to the production process, manufacturing material of the lampshade of the light box is transparent acrylic plates, and color advertising images are printed on the front surface of the blank; and before plastic molding is conducted, the softly baked blank is placed on a lower die and is stretched when an upper die is closed, then the softly baked blank is compressed to be positioned, and finally plastic molding is completed. Through the production process, the problems that a product is uneven in wall thickness and the images are deformed when die closing and plastic molding are conducted are solved; the yield is improved; material is saved; and meanwhile, blank material is conveyed automatically through a conveying mechanism, the situation that an operator is scalded by the blank material baked at a high temperature is avoided, production environment is improved effectively, labor cost is reduced, automated operation is realized, and production efficiency is improved.

Description

【Technical field】 [0001] The invention relates to the technical field of light box lampshade production, in particular to a production process and production equipment for a light box lampshade. 【Background technique】 [0002] The existing advertising light box includes a lampshade, and the lampshade is provided with advertising graphics and texts, and the advertising graphics and texts are attached to the lampshade by bonding to achieve the purpose of advertising. However, after a long period of use, the advertising graphics are easy to fade or fall off, which affects the appearance. In addition, the lampshade is generally formed by blister molding. When molding, the roasted and soft blank is directly placed on the lower mold, and after pressing and positioning, the mold is closed and plastic-absorbed; with this production process, the edge materials are neat, and when the mold is closed and blistered, , The side of the blank is stretched, resulting in uneven wall thicknes...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a production process for light box lampshades. Transparent acrylic plates are used as the material for making light box lampshades. Before blister molding, the baked and soft blanks are accurately placed on the lower mold as the concave mold, and the upper mold is closed. Press elastically on the corners of the billet for pre-positioning, gradually stretch to the inner cavity of the die, then compress and position, and finally form by blistering; adopt the process steps of stretching first, then compressing and positioning, and finally forming by blistering , effectively overcome the problem of uneven product wall thickness during mold closing and blistering, improve the yield rate and save materials

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