Multi-functional blowing shoe mold

Abstract

The invention in particular relates to a multi-functional blowing shoe mold, and belongs to the technical field of a shoe making mold. The multi-functional blowing shoe mold comprises mold frames that are opened or closed horizontally, wherein air passages are arranged in the mold frames; a bed die is installed in the middle of each mold frame; a shoe tree is positioned above the bed die and corresponds to the bed die in shape and structure; a feed port is formed in the root part of the bed die, wherein a constant-pressure air cabin is arranged at one side of the mold frame; and the bottom of the shoe tree and the bed die form a sole forming cavity that is communicated with the constant-pressure air cabin by the air passages. The multi-functional blowing shoe mold disclosed by the invention ensures that the bottom surface of a sole has high molecular density and good wear resistance, each middle layer has low density, is soft and has good elasticity, raw materials are saved, and the sole has long service life. Simultaneously, one mold can satisfies the production of injection-molding shoes, blowing shoes, pre-plasticized shoes and bicolor shoes, so that multiple purposes are realized by one mold, the manufacturing cost of the mold is saved, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of shoemaking moulds, in particular to a multifunctional air blowing shoe mould. Background technique [0002] Existing air-blowing shoe molds generally include an upper mold, a lower mold and a mold core located between the upper mold and the lower mold. One side edge of the mold core is hinged with the lower mold. The side edge is hinged, and the upper mold is provided with an injection channel and an air intake channel. The lower mold is composed of holes, and the lower mold is provided with an air outlet channel. The blowing injection molding process is that foam materials such as PVC enter the mold cavity formed between the upper mold and the lower mold through the injection channel of the upper mold, and the high-pressure gas enters through the air inlet, and then blows out through multiple small holes. The gas in the mold is discharged from the mold cavity through the air outlet channel on the lower...

AI Technical Summary

Problems solved by technology

This method of blowing and injection molding can produce foamed products, but there are some shortcomings. The gas passes through the mold cavity and is directly discharged through the exhaust channel of the lower mold. In this way, the gas in the mold cavity has fast fluidity and no function of holding air, making Insufficient foaming of PVC and other foam materials, waste of materials, and poor flexibility of foamed products

A blowing shoe mold with the publication number CN101966749A adopts vertical and horizontal blowing methods, that is, multiple small holes blow vertically, and multiple horizontal grooves can blow horizontally at the same time, and the exhaust port is located on the top. In this way, the gas will be held in the mold cavity formed by the upper mold cavity and the lower mold cavity. The gas will be held in the mold cavity for a period of time, and then discharged out of the mold cavity through the exhaust port. Although this method can Full foaming is achieved, but the pressure in the mold cavity is uncontrollable, and the specific value of the pressure is unknown, how it changes

This uncertain factor leads to a relatively large range of variation in the quality of the sole, and it is impossible to control the molecular density of the bottom of the sole, so that high-strength wear resistance cannot be guaranteed. The middle layer of the sole requires low density and cannot be controlled. Elasticity and softness cannot be guaranteed, because the pressure is uncontrollable. , sole life and overall comfort cannot be guaranteed, quality varies

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