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A low-pressure casting mold for a vehicle box

A low-pressure casting and box body technology, applied in the field of aluminum alloy casting, can solve the problems of under-casting or unclear outline, local pores in castings, uneven exhaust, etc., to achieve reasonable and ingenious structural design, full tapping threads, Good exhaust effect

Active Publication Date: 2020-06-05
四川省犍为恒益铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the defects of the existing low-pressure casting mold for vehicle exhaust gas treatment boxes, such as uneven exhaust and easy formation of local pores, under-casting or unclear outlines of the casting, the purpose of the present invention is to provide a low-pressure casting mold for vehicle boxes, which is effective Ensure that the filling of the box is balanced and complete, and avoid defects such as casting pores, under-casting or unclear contours

Method used

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  • A low-pressure casting mold for a vehicle box
  • A low-pressure casting mold for a vehicle box
  • A low-pressure casting mold for a vehicle box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Please refer to figure 1 , figure 2 , image 3 and Figure 4 As shown, this embodiment provides a low-pressure casting mold for a vehicle box body, including an upper mold 1, a lower mold 2, and a side mold assembly 3 arranged between the upper mold 1 and the lower mold 2, specifically, the upper mold 1 Fixed on the upper mold fixed plate 21, the lower mold 2 is fixed on the upper mold fixed plate 22, and between the upper mold fixed plate 21 and the upper mold fixed plate 22 is provided with a fixed upper mold fixed plate 21 and an upper mold fixed plate 22 Four support columns 26, four support columns 26 are distributed in the four right angles where the upper mold fixed plate 21 is opposite to the upper mold fixed plate 22. The slide rail 27 that is slidably connected with the side mold assembly 3 is installed on the lower fixed plate, and the side mold assembly 3 includes a front side mold 31, a rear side mold 32, a left side mold 33 and a right side mold 34. S...

Embodiment 2

[0056] Please combine figure 2 and 12 As shown, this embodiment has been further improved on the basis of Embodiment 1. On the left side mold 33, there are inlaid holes 15 communicating with the casting cavity 9 and inserts 16 that match the inlaid holes 15, and the plugs 14 is inserted into the casting cavity 9 along the middle part of the insert 16, and on the mating surface of the side mold assembly 3 embedding hole 15 and the insert 16, there are at least two pull-throughs along the casting cavity 9 to the outside of the side mold assembly 3. The variable diameter channel 17 is provided with a recessed groove along the side mold at the place where the insert 16 is embedded along the casting cavity 9, and here it is at the upper end of the metal casting cavity 9, which can be connected with the side mold shell The disassembled and connected insert 16 design can effectively utilize the variable diameter channel 17 to discharge the gas in the inner nest groove of the castin...

Embodiment 3

[0059] Please combine Figure 5 and Figure 8 As shown, this embodiment has been further improved on the basis of Embodiment 2. Specifically, a plurality of exhaust sink holes 18 can be set on the mating surface of the water channel positioning core head and the main sand core 51; this embodiment provides two One exhaust sink hole 18 is an example, and two exhaust sink holes 18 are mirror-symmetrically arranged along the center of the bottom surface of the boss structure. Since the water channel sand core 52 is placed vertically in the vehicle exhaust gas treatment box mold, they are mirror-symmetrically arranged side by side. The exhaust sink hole 18 can introduce the gas into the main sand core 51 along the direction of gas spreading, which has a better exhaust effect, and the structural design is simple and ingenious.

[0060] In addition, in this embodiment, the diameter of the two circular exhaust sink holes 18 is 12 mm, which can effectively increase the exhaust area of...

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Abstract

The invention discloses a low-pressure casting mold for a box body for a vehicle, and relates to the technical field of aluminum alloy casting. The defects that because the exhaust of the mold is notuniform, the casting partial gas hole, misrun or unclear outline and the like are easily formed are overcome. The low-pressure casting mold comprises an upper mold, a lower mold and a side mold assembly, and further comprises a casting cavity of a sand core assembly, the sand core assembly is fixed on the lower mold through a positioning base, the positioning base is provided with a diversion holecommunicating with the casting cavity, and an exhaust passage is arranged on the upper mold; the sand core assembly communicates with each other, and a main sand core is hollowed out; and an overflowsystem communicating with the casting cavity is arranged on the upper mold. By the technical scheme, balanced exhaust gas in the casting process of the box body can be realized, the gas in the cavityof the casting is rapidly discharged out, and the defects that the casting gas hole, misrun or unclear outline and the like do not exist in the forming box body are overcome, the qualified rate of the products reaches more than 99.9%, and the qualified rate of the formed casting is effectively improved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy casting, and more specifically relates to a low-pressure casting mold for a vehicle box. Background technique [0002] As the emission control of automobile exhaust in various countries in the world becomes more and more strict, the casting upgrade of commercial vehicle exhaust treatment box is an inevitable product. Due to the high efficiency and power requirements of the market vehicle engine, the company focused on improving the fluidity of the metal liquid in the casting cavity when developing the casting vehicle exhaust gas treatment box, and continuously improved the filling materials, metal molds and sand cores. Improve and customize special casting equipment for vehicle exhaust gas treatment boxes. [0003] The vehicle exhaust gas treatment box has a complex structure and uneven thickness; the thinnest part of the product is only 5mm, while the thickest part reaches 30mm, and the h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D18/04
CPCB22D18/04
Inventor 唐祖清
Owner 四川省犍为恒益铝业有限公司
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