Novel foaming forming die

Abstract

The invention relates to a novel foaming forming die which is composed of a convex die, a concave die, a demoulding mechanism and cooling devices, wherein each of a convex die core and a concave die core is formed through bending and welding a 2mm-6mm stainless steel plate; a circular air penetrating hole with the diameter being 0.3-1.2 mm is perpendicularly formed in each of the convex die core and the concave die core; as the convex die core and the concave die core are provided with the circular circular air penetrating holes, the strength is greatly improved compared with the stainless steel die core provided with an air penetrating groove and with the same thickness, and the situation that the air penetrating groove at the original bending part is likely to deform is avoided; as the air penetrating holes are formed, the phenomenon that scuffing is likely to take place when product demoulding is carried out is avoided when the air penetrating groove structure is adopted, the product surface quality is improved, and the holes are unlikely to block after long-time application; as a first air chamber and a second air chamber are provided with the cooling devices, cooling to the die cores is accelerated; and the novel foaming forming die is reasonable in structure and convenient to use and has great practical and popularization value.

Description

technical field [0001] The invention relates to a mold for producing foamed plastic products, in particular to a novel foaming molding mold. Background technique [0002] After retrieving relevant patent documents, no foam molding mold with the same structure as the present invention has been found. The existing foam molding molds are generally made of cast aluminum through machining. Since the foamed plastic particles need to be heated to fuse the foamed plastic particles after entering the mold cavity, the mold core is usually provided with air holes, and the air holes in the air holes The air plug is inlaid on the top, and the steam passes through the air plug into the mold cavity to heat the mold core, so that the foam plastic particles are matured, but the air plug on the inlay is easy to loosen and block after a period of use, making the molded product uneven , the mold drawing phenomenon is serious, which seriously affects the quality of the product, and the air plug...

AI Technical Summary

Problems solved by technology

The existing foam molding molds are generally made of cast aluminum through machining. Since the foamed plastic particles need to be heated to fuse the foamed plastic particles after entering the mold cavity, the mold core is usually provided with air holes, and the air holes in the air holes The air plug is inlaid on the top, and the steam passes through the air plug into the mold cavity to heat the mold core, so that the foam plastic particles are matured, but the air plug on the inlay is easy to loosen and block after a period of use, making the molded product uneven , the mold drawing phenomenon is serious, which seriously affects the quality of the product, and the air plug needs to be replaced frequently, and the replacement process is cumbersome; due to the low strength of the aluminum material, and the need to inlay the air plug on the mold core, in order not to deform the mold core, the air plug is firmly embedded, usually The mold core wall is made thicker. In order to fuse the foamed plastic particles during the product molding process, a certain temperature must be reached in the mold core and the mold cavity. Therefore, the product molding process requires a large amount of steam to enter, and the heat conduction time is longer. The cooling time is also longer and the production efficiency is low; although the mold core of the foaming mold is made of stainless steel, there are ventilation grooves on the mold core, which can solve the problem of rapid aging of foam plastic particles and rapid cooling of the product after molding. However, multiple ventilation grooves on the model will affect the strength of the mold. The parts between the ventilation grooves are easy to change, and the shape of the foam material is high. Therefore, it is necessary to design a new type of foam molding mold to reduce the manufacturing cost of the mold, improve the molding speed and demoulding speed of the product, reduce the steam consumption, and meet the actual production requirements. needs, to reduce costs and consumption, and improve economic efficiency

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