Manufacturing process of porous elastic polyurethane material

Abstract

The invention relates to a manufacturing process of a porous elastic polyurethane material, which uses special slitting equipment. The slitting equipment comprises a workbench, a mounting frame, a positioning device and a slitting device, the process for manufacturing the porous elastic polyurethane material by using the slitting equipment comprises the following steps of material forming, material positioning, slitting preparation, shaping slitting and discharging, and the positioning device comprises a positioning sliding block, a positioning rod, a linkage plate, a top plate, a driving rack, a transmission gear, a driving rack, a connecting plate, a middle limiting rod and a side limiting rod. According to the manufacturing process, materials are limited in all directions through the positioning device, the position stability of the materials in the cutting process is effectively guaranteed, the slitting device conducts slitting on the materials in the mode that punching is conducted firstly and then cutting is conducted, the slitting difficulty can be obviously reduced, it is guaranteed that a slitting tool bit can rapidly cut the materials into blocks, and the situation that the cutting surface is rough and uneven after repeated cutting is avoided.

Description

technical field [0001] The invention relates to the field of polyurethane material manufacturing, and specifically relates to a porous elastic polyurethane material manufacturing process. Background technique [0002] Polyurethane material is a kind of polymer material, known as "the fifth largest plastic", and is widely used in many fields of national economy because of its excellent performance. The product application fields involve light industry, chemical industry, electronics, textile, medical treatment, construction, building materials, automobile, national defense, aerospace, aviation and so on. Among them, polyurethane foam is more common in life. There are two types of polyurethane foam, soft foam and hard foam. The soft foam has an open-cell structure, and the hard foam has a closed-cell structure. The main function of the polyurethane soft foam is cushioning. Polyurethane soft foam is commonly used in sofa furniture, pillows, cushions, toys, clothing and sound ...

AI Technical Summary

Problems solved by technology

[0003] Polyurethane soft foam is often cut after molding to apply to different life scenes. At present, there are still the following problems in the cutting process of polyurethane soft foam: a. Due to the light weight and soft material, Sliding and deformation are very easy to occur during the cutting process, which makes it difficult for the cutting equipment to cut the material at one time, which reduces the work efficiency; b. Since the material needs to be cut multiple times to complete the cutting, the cutting surface is subject to reciprocating friction If burrs appear, it is necessary to increase the subsequent processing steps to eliminate burrs, which increases the operating cost of the manufacturer

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