A large TV back panel forming mold

Abstract

The invention discloses a forming die for a large television backplane. The forming die comprises an upper die and a lower die, wherein the upper die comprises an upper cover plate, an upper block, an upper die base and an upper die plate which are fixedly connected in sequence from top to bottom; the lower die comprises a lower supporting plate, a lower block, a lower die base, a lower cushion block and a clamping plate which are fixedly connected in sequence from bottom to top; the centre of the upper die plate is sunken upwards to form a hollow and arc-shaped cavity; the clamping plate is provided with a first raising puncher, a second raising puncher, a third raising puncher and a fourth raising puncher on positions just below the cavity; and parts raised by the first raising puncher, the second raising puncher, the third raising puncher and the fourth raising puncher during die closing, of the backplane, are a first raised bump, a second raised bump, a third raised bump and a fourth raised bump respectively. The forming die disclosed by the invention is capable of reducing a phenomenon of raised bump burst, thus greatly increasing the forming yield of the raised bumps; and moreover, an S-shaped structure with a certain R angle is formed on the bent sectioned surface of the backplane, the bent sectioned surface is not liable to crack during shaping pulling, and the backplane is high in forming quality, low in industrialization cost, and convenient for increasing economic benefits.

Description

technical field [0001] The invention relates to the technical field of stamping dies, in particular to a forming die for a large TV backplane. Background technique [0002] The TV backplane is an important structural component used to install LCD panels and circuit boards. Generally, there are bending molding surfaces around the TV backplane, and there are several bulges on the backplane. The process is complicated and the production cost is high. , especially the backplane of a large TV, once it becomes waste, it will cause huge losses. With the development of thinner and thinner backplanes, the convex hulls on the backplanes of large TVs are easy to burst, and in order to save costs, the bent molding surface of the backplanes is generally sharp corners, and the sharp corners are pulled during the later shaping process Cracks easily. [0003] Therefore, in order to solve the above-mentioned existing problems, the present invention provides a new technical solution. Cont...

AI Technical Summary

Problems solved by technology

[0002] The TV backplane is an important structural component used to install LCD panels and circuit boards. Generally, there are bending molding surfaces around the TV backplane, and there are several bulges on the backplane. The process is complicated and the production cost is high. , especially the back panel of a large TV, once it becomes waste, it will cause huge losses

With the development of thinner and thinner backplanes, the convex hulls on the backplanes of large TVs are easy to burst, and in order to save costs, the bent molding surface of the backplanes is generally sharp corners, and the sharp corners are pulled during the later shaping process easy to crack

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