Foaming preheating device for strip-shaped high polymer material

Abstract

The invention belongs to the technical field of foaming material production equipment, and particularly discloses a foaming preheating device for a strip-shaped high polymer material. The device comprises a heating box body and a conveying mechanism, the conveying mechanism comprises a closed-loop-shaped conveying belt, a first roller and a second roller, wherein the closed-loop-shaped conveying belt is used for circulating conveying and arranged in the heating box body, one end of the closed-loop-shaped conveying belt extends out of the inlet end of the heating box body, and the two ends of the conveying belt are wound around the first roller and the second roller. The conveying belt is made of a flexible high polymer material and comprises a placement area and power areas arranged on thetwo sides of the placement area. According to the device, the flexible high polymer material is selected as the material of the conveying belt, the placement area of the conveying belt is used for placing the strip-shaped high polymer material, the power areas are matched with the rollers to achieve transmission, a screw rod is adopted as a tensioning mechanism, and the structure of gear chain transmission, iron net conveying and air cylinder tensioning in the prior art is effectively replaced; and the preheating device has the advantages of stable operation, difficulty in damage, long service life, good preheating effect, low cost, high efficiency and the like.

Description

technical field [0001] The invention belongs to the technical field of foaming material production equipment, and in particular relates to a foaming preheating device for strip-shaped polymer materials. Background technique [0002] Sheet foaming refers to the process of heating the formed strip-shaped polymer material in a foaming furnace, the foaming agent decomposes at high temperature to generate gas, fills the inside of the polymer material, and produces a foaming material with closed pores . When the sheet is directly foamed, the foaming effect is not good. Not only does it take a long time, but it is also prone to problems such as uneven foaming and substandard strength and hardness. Therefore, the sheet is preheated before foaming in actual production. , to improve the above problems. [0003] The existing foaming preheating equipment is generally composed of a conveying mechanism and a heating box. The conveying mechanism usually uses an iron mesh as a conveyor be...

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Problems solved by technology

The above-mentioned preheating equipment has the following disadvantages: ①The iron net is easy to rust and accumulate oil, which needs to be cleaned frequently and has a short service life; and the heat conduction efficiency of iron is high, even if a thin iron sheet is installed, there will still be sheets due to the existence of the iron net The problem of uneven heating or even traces on the surface will lead to uneven foaming or even breakage in the follow-up; in addition, the sheet may also have the problem of bonding with the thin iron sheet; Tooth jamming or even broken teeth will cause the machine to shut down and require frequent maintenance. For assembly line production, the production efficiency will be significantly reduced; ③Due to the need for frequent maintenance and cleaning, choosing the cylinder as the tensioning mechanism can facilitate the disassembly of the iron net, but the cylinder is easy to adjust The pressure is unstable, which makes the gears on both sides unbalanced, which is easy to cause the cylinder to rebound, and the chain may break; and it takes a certain amount of time to adjust the cylinder. When the cylinder pressure is not enough, it is easy to break or skip teeth; ④Requires frequent maintenance clean up, and have a short lifespan, so are costly

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