Production method for seamless nickel sheet with microprism array

Abstract

The invention relates to a production method for a seamless nickel sheet with a microprism array. The production method includes the steps of manufacturing unit nickel sheets of required amount; performing finish machining to and removing burrs of the unit nickel sheets, and cutting two sides of a front surface of each unit nickel sheets to form a cut surface with certain angle; arranging the machined nickel plates as required, and welding the unit sheets from reverse surfaces to be sequentially connected to form a required large nickel sheet matrix; bending the welded large nickel sheet matrix, selecting a plastic cylinder with smooth inner wall, and fixing the bent large nickel sheet matrix on the smooth inner wall of the plastic cylinder; and placing the plastic cylinder with the large nickel sheet matrix adhered into an electroforming groove for electroforming, and forming the required seamless nickel sheet on the front surface of the large nickel sheet matrix. Cutting precision and splicing precision of the unit nickel sheets are controlled strictly, the surface of a die for producing the large nickel sheet matrix of the nickel sheet is seamless by the aid of the cylinder, and accordingly production of the seamless nickel sheet is truly achieved.

Description

technical field [0001] The invention relates to a method for manufacturing a large-scale microprism type reflective material mold, in particular to a production method for a seamless nickel sheet with a microprism array. technical background [0002] At present, in the field of large-scale microprism-type reflective material mold manufacturing, domestic and foreign impositions are divided into 4 categories: [0003] 1. The principle of heat transfer: This method can theoretically achieve the effect of seamless splicing. It is to transfer the unit nickel plate to acrylic plate, polycarbonate plate and other materials through multiple heat transfer methods, and put it on after metallization. Electroforming into the electroforming tank to form a large-sized nickel plate. Due to the limitations of technical principles and processes, the cost of this type of imposition equipment is very expensive, and the brightness of the microprism type reflective material produced by the nick...

AI Technical Summary

Problems solved by technology

Because the silica gel is relatively soft, it is difficult to control the splicing accuracy, and the production cycle is relatively long and the cost is relatively high. The most important thing is that the produced nickel plate with a microprism array has a greater brightness attenuation (about 70% attenuation after testing), which cannot be achieved. National standard

[0005] 3. Laser welding method: This method is to cut the nickel plate into the required shape according to the requirements, and arrange it according to the requirements. After welding with laser, it is placed in the electroforming tank for electroforming to obtain a large-sized nickel plate. Because it is a flat plate electroforming , the electroforming liquid will enter the weld seam, and the obtained large-sized nickel plate will have burrs at the weld seam. The nickel plate produced by this method will cause uneven brightness when producing reflective materials with microprism arrays, which is easy to produce in the production process. In case of rupture

This method has a long production cycle, unstable process, and relatively large joints. The large-sized nickel plate produced is prone to cracks during the production of reflective materials with microprism arrays, and the brightness of the reflective materials is uneven and cannot reach Effect

[0007] Therefore, for the seamless splicing of large-sized nickel sheets with microprism arrays, there is no ideal method and equipment to make the splicing of nickel sheets with microprism arrays seamless.

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