Hot bending die and hot bending processing method

Abstract

The invention provides a hot bending die and a hot bending machining method. The hot bending die comprises a first die core assembly. The first mold core assembly comprises a first forming face, a first air cavity with the first forming face as a side wall and at least one first air channel. A plurality of pores are distributed in the first forming surface; the first air cavity is communicated with an air suction device through the first air channel. According to the hot bending die, only one die core assembly needs to be provided with the air suction cavity, when a lens is formed through the air suction cavity and the die core with the hole, pressure difference is formed on the two surfaces of a to-be-machined material, the to-be-machined material is tightly attached to the surface of the die core through the pressure difference, and the forming effect can be achieved without additionally arranging another die core; and the die cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of hot bending processing, in particular to a hot bending die and a hot bending processing method. Background technique [0002] With the rapid development of optical technology, the demand for HUD (Head Up Display) in the automotive field is increasing, and the requirements for product performance and technical indicators are also increasing. [0003] At present, conventional head-up display lenses at home and abroad are formed by direct thermal bending of molds, and the lens surface is directly contacted with the mold. The contact molding solution has the following disadvantages: [0004] 1. The mold surface appearance requirements are high, and the mold processing cost is high; [0005] 2. The surface precision of the upper and lower cores is very high, and the processing cost is high and difficult; [0006] 3. The upper mold core and the lower mold core have high requirements on the precision of mold c...

AI Technical Summary

Problems solved by technology

[0004] 1. The appearance requirements of the mold surface are relatively high, and the mold processing cost is relatively high;

[0005] 2. The surface precision requirements of the upper mold core and the lower mold core are very high, and the processing cost is high and difficult;

[0006] 3. The upper mold core and the lower mold core have high precision requirements for mold clamping, and the compression molding mold needs to move up and down, and it is currently impossible to achieve high-precision matching;

[0007] 4. The surface shape of the lens after molding is irregular, and it is not easy to compensate for the surface shape of the mold;

[0008] 5. When the prefabricated part is placed, the position of the prefabricated part cannot be guaranteed to be placed in the center of the mold;

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