Molding device of lost-mold white mold

Abstract

The present invention discloses a molding device of a lost-mold white mold, and the molding device includes a bracket, a molding fixing plate fixed to the bracket, a fixing mold fixed to the middle ofthe molding fixing plate, and a plurality of vertical upward guide posts arranged on the molding fixing plate, wherein a top plate is fixed to the tops of the guide posts and provided with a silo, aforming moving plate is connected to the guide posts in sliding, a moving mold is fixed to the bottom of the forming moving plate and opposite to the fixing mold; the fixing mold and the moving mold are respectively provided with a separate air chamber in which separate steam inlets and drainage ports for draining water and steam are arranged; the drainage ports are connected to a sealed drainageditch through a pipe; the fixing mold and the moving mold are respectively provided with a spray cooling pipe; the spray cooling pipe is extended into each part of a chamber wall; and a plurality of air plugs are arranged on the chamber wall between the air chambers of the fixing mold and the moving mold and the chamber. The present invention is a technical innovation in the molding field of the lost-mold white mold and solves the problem that the core of the white mold contains water and the molding quality of large and medium-sized complex parts is unstable, and the production cycle is shortened.

Description

technical field [0001] The invention relates to the field of lost foam casting molding, in particular to a forming device for a lost foam white mold. Background technique [0002] With the widespread use of lost foam casting in the foundry industry, especially the deformation of large and medium-sized parts is relatively obvious. However, in the prior art, the molding quality of parts with complex structures is not good, and the deformation of the white mold is serious. [0003] In the process of realizing the present invention, the inventors found that there are at least the following problems in the existing lost foam casting molding: [0004] In the prior art, the mixing pipe (water, steam, compressed air) connecting the forming solid plate and the lower mold, after the water is cooled, the remaining water in the mixing pipe cannot be discharged until the steam enters the next mold, and then enters the mold cavity together with the steam The water content in the core of...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the mixing pipe (water, steam, compressed air) connecting the forming solid plate and the lower mold, after the water is cooled, the remaining water in the mixing pipe cannot be discharged until the steam enters the next mold, and then enters the mold cavity together with the steam The water content in the core of the white mold will be large, resulting in a long drying time of the white mold and a waste of energy;

[0005] In the prior art, the water in the upper touch cavity cannot be completely discharged when the mold is opened, and the cooling water is sprayed several meters away when the mold is opened, and the operators wear waterproof equipment all year round, resulting in ulceration of the hands and feet of the operators;

[0006] In the prior art, after the heating in the mold cavity is completed, the steam is directly discharged into the workshop, resulting in the bad environment of the workshop surrounded by smog;

[0007] In the prior art, the upper and lower molds are connected to solve the drainage problem of the upper mold. When the upper mold is heated, a part of the steam penetrates from the air plug through the foam beads to the lower mold, and the other part of the steam directly enters the lower mold through the connecting hole of the upper and lower molds. The steam cannot be completely To penetrate through the air plug hole, it is necessary to increase the number of steam penetrations to ensure the molding quality of the white mold, which increases energy consumption and reduces work efficiency;

[0008] In the prior art, the mold cooling adopts filling cooling, that is, one pipeline injects cooling water into the mold cavity, and when the water in the mold cavity is filled, the other pipeline starts to drain water, and the cooling water continues to inject cooling water into the air chamber. When encountering large and medium-sized parts with complex structures, the incoming cold water is discharged from the mold cavity without completely cooling the mold cavity, and the cooling of the dead corner is not in place, resulting in poor surface consistency of the white mold and wasting water;

[0009] The existing technology is to control the cooling by time. Since one water pump is used for cooling multiple devices, it is possible that two devices are cooled at the same time, or 10 devices are cooled at the same time. The cooling water pressure is different for each forming, resulting in inconsistent cooling effects;

[0010] In the prior art, the air chamber of the mold is empty, especially when the air chamber of special parts is too large, the time of injecting steam is increased and the consumption of steam is wasted when the mold is heated.

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