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V-method mold casting technique for casting complicated pedestal of home appliance mold

A home appliance mold and casting process technology, which is applied to casting molding equipment, casting molds, and casting mold components. Good casting quality and sand mold quality

Active Publication Date: 2017-08-18
滁州鑫诺实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, not only the operating efficiency is low, but the labor intensity of the workers is high, and the quality of the castings is difficult to guarantee.
After adopting the v-method process for production, the operation efficiency has been greatly improved and the product quality has been improved. However, the shape and structure of the aluminum alloy mold castings in the household appliance industry are complicated. According to the normal V-method model and casting process, the model cannot be coated or removed after molding. model and other issues

Method used

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  • V-method mold casting technique for casting complicated pedestal of home appliance mold
  • V-method mold casting technique for casting complicated pedestal of home appliance mold
  • V-method mold casting technique for casting complicated pedestal of home appliance mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Use 3D software to perform parting operation on the 3D base. The parting surface is selected as the bottom surface. The separated models are the lower die model 1 and the upper die model 2. The upper die model 2 is the inner shape, but in order to Therefore, the upper die model 2 should be made into a convex shape with the parting surface as the zero point, so that the lower die model 1 and the upper die model 2 are all convex ( Figure 1-3 shown).

[0043] 2. Optimize the upper mold model 2 again. First, make a rectangle with the maximum length and width of the upper mold model 2, and then expand the four sides of the rectangle by 20mm. The height is the highest point at the bottom of the top boss, and make a cuboid. The top boss and the cuboid are fused to obtain the upper mold model block 3 ( Figure 4 shown).

[0044] 3. Then perform Boolean operations on the above-mentioned cuboid and the upper mold model 2, you can wait for a back-shaped entity, divide the ba...

Embodiment 2

[0051] 1. Use 3D software to perform parting operation on the 3D base. The parting surface is selected as the bottom surface. The separated models are the lower die model 1 and the upper die model 2. The upper die model 2 is the inner shape, but in order to Therefore, the upper die model 2 should be made into a convex shape with the parting surface as the zero point, so that the lower die model 1 and the upper die model 2 are all convex ( Figure 1-3 shown).

[0052] 2. Optimize the upper mold model 2 again. First, make a rectangle with the maximum length and width of the upper mold model 2, and then expand the four sides of the rectangle by 30mm. The height is the highest point at the bottom of the top boss, and make a cuboid. The top boss and the cuboid are fused to obtain the upper mold model block 3 ( Figure 4 shown).

[0053] 3. Then perform Boolean operations on the above-mentioned cuboid and the upper mold model 2, you can wait for a back-shaped entity, divide the ba...

Embodiment 3

[0061] 1. Use 3D software to perform parting operation on the 3D base. The parting surface is selected as the bottom surface. The separated models are the lower die model 1 and the upper die model 2. The upper die model 2 is the inner shape, but in order to Therefore, the upper die model 2 should be made into a convex shape with the parting surface as the zero point, so that the lower die model 1 and the upper die model 2 are all convex ( Figure 1-3 shown).

[0062] 2. Optimize the upper mold model 2 again. First, make a rectangle with the maximum length and width of the upper mold model 2, and then expand the four sides of the rectangle by 25mm. The height is the highest point at the bottom of the top boss, and make a cuboid. The top boss and the cuboid are fused to obtain the upper mold model block 3 ( Figure 4 shown).

[0063] 3. Then perform Boolean operations on the above-mentioned cuboid and the upper mold model 2, you can wait for a back-shaped entity, divide the ba...

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Abstract

The invention provides a V-method mold casting technique for casting a complicated pedestal of a home appliance mold. According to the casting technique, dry silica sand is adopted for V-method molding; the molding negative pressure is controlled to be 0.03Mpa to 0.07Mpa; a pedestal casting is made of aluminum alloy and is cast at the temperature of 690 DEG C; an internal pre-embedded water channel is a circular pipe made of red copper or stainless steel; the surface of the water pipe is coated with a high temperature resistant coating; after the design of the V-method mold is optimized, the mold can be conveniently quickly replaced and quick machining and molding of the mold can be realized; the V-method mold is applicable to a small-batch multi-type production mode; the V-method mold structure is characterized in that an inner die and an outer die are each a convex type; by adopting the method, the mold can be conveniently taken out after molding, and the technical problem that a female die needs a matching board is solved. A secondary molding method is adopted, and a convex cast sand mold can be obtained after secondary molding, and then the convex cast sand mold can be combined with a concave casting cavity to accomplish casting.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to a V-method model casting process for casting complex bases of household appliance molds. Background technique [0002] V-method vacuum molding is the third-generation molding method after mechanical molding and chemical molding. The specific process is to prepare a mold with a pumping chamber. There are vent holes on the mold that can be directly connected to the vacuum tube of the pumping chamber. The EVA film is placed under the film dryer and heated to a softened state. Through the air holes on the mold, the vacuum is applied to the softened plastic film to make it closely adhere to the mold. The negative pressure sand box is placed on the mold, and the sand box is covered. The dry sand is filled, and the dry sand obtains the maximum density through the vibrating equipment. The top of the sand mold is covered with a layer of sealing film, and the sand box is evacuated to caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/22B22C9/03
CPCB22C9/03B22C9/22
Inventor 马正松
Owner 滁州鑫诺实业有限公司
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