A kind of porous elastic polyurethane material manufacturing process

Abstract

The invention relates to a manufacturing process of porous elastic polyurethane material, which uses special cutting equipment, which includes a workbench, a mounting frame, a positioning device and a cutting device, and the porous elastic polyurethane material is processed by using the above cutting equipment. The manufacturing process includes the following steps: material forming, material positioning, slitting preparation, shaping slitting and discharging. The positioning device includes positioning sliders, positioning rods, linkage plates, top plates, driving racks, transmission gears, and driving racks. , connecting plate, middle limit rod and side limit rod. The invention uses a positioning device to limit the position of the material in all directions, effectively ensuring the position stability of the material during the cutting process. The cutting device cuts the material by first piercing and then cutting, which can significantly reduce the difficulty of cutting. Ensure that the cutting head can quickly cut the material into pieces, avoiding the situation that the cutting surface is rough and uneven after repeated cutting.

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

Images