Polyvinyl chloride (PVC) molding machine and molding mould

Abstract

The invention provides a polyvinyl chloride (PVC) molding machine which comprises a liquid material hopper, a feeding screw, a temperature controllable barrel, a first push plate and a heating plate and a cooling plate in a temperature control channel. An anti-leakage injection port is arranged at the tail end of the temperature controller barrel. The anti-leakage injection port comprises an anti-leakage screw sleeve tip and an anti-leakage sleeve sleeved at one end of an opening at the anti-leakage screw sleeve tip, an anti-leakage bead and an anti-leakage spring are arranged between the anti-leakage screw sleeve tip and the anti-leakage sleeve. A molding mould is further provided. The molding mould comprises a mould panel and a mould base plate, the anti-leakage injection port at the tail end of the temperature controllable barrel corresponds to a punching hole of the mould base plate, the mould base plate is provided with a drainage channel communicated with the punching hole, and a space between the mould panel and the mould base plate is communicated with the tail end of the drainage channel. The PVC molding machine can work under low pressure, and therefore, a copper mould or an aluminum mould can be produced in use. The PVC molding machine reduces energy consumption and cost, the mould matched with the anti-leakage injection port is used, the drainage channel and molding layer are separated, location of materials is facilitated, and corrosion of base color caused by injection pressure of the barrel is reduced.

Description

technical field [0001] The invention belongs to the field of trademark forming and manufacturing, and in particular relates to a PVC trademark manufacturing forming machine and forming mold. Background technique [0002] The production of various existing traditional trademarks is to use solid methods such as solid powder or granules to perform high-pressure injection and high-pressure mold locking on the PVC material after mixing and granulation. In the process of product processing, when the granular PVC material is granulated, it is necessary to add a large amount of additives to increase the fluidity and slipperiness in order to solve the demand for slipperiness, so as to improve the color stability and secondary processability of the product, and it is necessary to use steel Molds and high-pressure molding can be used for production and manufacturing. Due to high-pressure injection when plasticizing materials are injected, the products are prone to defects that are diff...

AI Technical Summary

Problems solved by technology

In the process of product processing, when the granular PVC material is granulated, it is necessary to add a large amount of additives to increase the fluidity and slipperiness in order to solve the demand for slipperiness, so as to improve the color stability and secondary processability of the product, and it is necessary to use steel Molds and high-pressure molding can be used for production and manufacturing. Due to high-pressure injection when plasticizing materials are injected, the products are prone to defects that are difficult to solve, such as air marks, flow marks, shrinkage pits, and material leakage during the injection process. No matter in terms of energy consumption, mold development costs, etc. In terms of consideration, the costs are very large

Images