New technology for producing new energy automobile support mold through vertical line

Abstract

The invention relates to the technical field of automobile bracket production, in particular to a novel process for producing a new energy automobile bracket mold by using a vertical line, which is produced by using a Disa vertical line, and is characterized in that a middle hole of an automobile bracket is molded by using a sand core, and the process comprises the following steps: performing side top pouring from a pouring cup, and enabling a pouring liquid to enter a pouring cavity through a transverse pouring gate, a main lap joint and a vertical pouring gate in sequence; and when 80% of the pouring cavity is poured, water is fed through a top riser, the flow speed is adjusted through a first throttling block and a second throttling block, and simultaneous mold filling of the upper automobile support and the lower automobile support in the pouring cavity is completed. The new technology for producing the new energy automobile support mold through the vertical line adopting the steps is suitable for producing a lower core casting support with a middle hole, molding is conducted in a sand mold and sand core combined mode, demolding of the middle hole is facilitated, feeding from top to bottom is achieved through a thermal field of the automobile support in the pouring process, meanwhile, liquid is fed through a top riser, and the production efficiency is improved. And the feeding efficiency of the top riser is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile bracket production, and in particular to a new process for vertically producing a bracket mold for a new energy automobile. Background Art

[0002] For castings, thick and large parts generally involve shrinkage compensation issues. If shrinkage compensation cannot be achieved, shrinkage defects are very likely to occur inside. For new energy vehicle brackets, there are installation through holes, and the through holes are set perpendicular to the demoulding direction, so casting demoulding cannot be achieved. If the holes are not cast out, it is difficult to set risers at the thick and large positions of the holes to achieve shrinkage compensation for the parts. How to produce such parts on the vertical line is a difficult problem to be solved, which requires better design solutions and ideas. Summary of the invention

[0003] The purpose of the present invention is to provide a new process for vertical line production of new energy vehicle bracket molds to solve the problems of the middle hole being unable to be demolded and the internal shrinkage cavities and shrinkage during DISA vertical line production.

[0004] To achieve the above purpose, the present invention provides a new process for vertical line production of new energy vehicle bracket molds, using DISA vertical line production, the middle hole of the automobile bracket is formed by sand core, including the following steps: S1, side top pouring is carried out from the pouring cup, and the pouring liquid enters the pouring cavity through the horizontal runner, main overlap and vertical runner in sequence; S2. When pouring reaches 80% of the pouring cavity, water is introduced through the top riser, and the first throttle block and the second throttle block adjust the flow rate to complete the simultaneous filling of the upper automobile bracket and the lower automobile bracket in the pouring cavity.

[0005] Preferably, in S1, the center of the top of the horizontal runner is connected to the pouring cup, both sides of the horizontal runner are connected to main overlaps, the main overlaps are connected to the vertical runner, and the vertical runner is connected to the first throttling block and the second throttling block in sequence.

[0006] Preferably, in S1, pouring cavities are provided on both sides of the vertical pouring channel, and sand cores are placed in the pouring cavities.

[0007] Preferably, in S2, the top riser is arranged at the top of one side of the sand core close to the pouring cup, and the top riser is connected to the vertical runner through an inclined shrinkage feeding channel.

[0008] Preferably, in S1, the middle hole of the upper automobile bracket and the middle hole of the lower automobile bracket in the casting cavity share a sand core.

[0009] Preferably, in S1, the vertical pouring channel is connected to the lower automobile support of the pouring cavity below the second throttling block.

[0010] Preferably, in S2, the top riser is a hot riser.

[0011] Therefore, the present invention adopts a new process for producing a new energy vehicle bracket mold in a vertical line according to the above steps, which is suitable for producing a lower core cast bracket with a middle hole. It is formed by a combination of a sand mold and a sand core, which is convenient for demolding the middle hole. The thermal field of the automobile bracket during the casting process is used to achieve top-down shrinkage compensation. At the same time, the top riser is used to feed liquid to improve the shrinkage compensation efficiency of the top riser.

[0012] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a new process for producing a new energy vehicle bracket mold in a vertical line according to the present invention; Figure 2 Schematic diagram of the connection combination of the automobile bracket and the sand core in the present invention, in, Figure 2 (a) in the equation is Figure 2 (b) is the cross-sectional view along AA, Figure 2 (b) is a connection diagram; Figure 3 It is a cross-sectional schematic diagram of the automobile bracket in the present invention.

[0014] Reference numerals: 1. pouring cup; 2. horizontal runner; 3. main overlap; 4. vertical runner; 5. top riser; 6. sand core; 7. automobile bracket; 8. first throttle block; 9. second throttle block; 10. shrinkage channel; 11. middle hole. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Unless otherwise defined, the technical terms or scientific terms used in the present invention should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs. The above-mentioned features or features mentioned in the specific examples mentioned in the present invention can be combined arbitrarily, and these specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0016] Example like Figure 1 and Figure 3 As shown, the present invention provides a new process for vertical line production of new energy vehicle bracket molds, using DISA vertical line production, for the middle hole 11 part of the automobile bracket 7 that cannot be demolded, using sand core 6 to form, including the following steps, S1, side top pouring is performed from pouring cup 1, and the pouring liquid enters the pouring cavity sequentially through horizontal runner 2, main lap joint 3 and vertical runner 4. In this embodiment, side top pouring is adopted to realize shrinkage compensation from top to bottom through the thermal field of automobile bracket 7 during the pouring process.

[0017] S2, when pouring reaches 80% of the pouring cavity, water is introduced through the top riser 5 to improve the shrinkage compensation efficiency of the top riser 5. The first throttle block 8 and the second throttle block 9 adjust the flow rate of the pouring liquid to complete the simultaneous filling of the upper automobile bracket 7 and the lower automobile bracket 7 in the pouring cavity.

[0018] In S1, the top center of the horizontal runner 2 is connected to the pouring cup 1, and both sides of the horizontal runner 2 are connected to the main overlap 3, the main overlap 3 is connected to the vertical runner 4, and the vertical runner 4 is sequentially connected to the first throttling block 8 and the second throttling block 9. The pouring cup 1 steadily introduces the pouring liquid into the horizontal runner 2, the horizontal runner 2 introduces the pouring liquid into the main overlap 3, the main overlap 3 introduces the pouring liquid into the vertical runner 4, and the vertical runner 4 introduces the pouring liquid into the pouring cavity, and the speed of the pouring liquid entering the pouring cavity is controlled to ensure the finished product quality of the automobile bracket 7.

[0019] In S1 , pouring cavities are provided on both sides of the vertical pouring channel 4 , and sand cores 6 are placed in the pouring cavities.

[0020] like Figure 2 As shown, in S1, the middle hole 11 of the upper automobile bracket 7 and the middle hole 11 of the lower automobile bracket 7 in the casting cavity share a sand core 6 to facilitate rapid core placement. In this embodiment, the middle hole 11 is formed by the sand core 6, and the middle position of the inner hole of the middle hole 11 of the automobile bracket 7 is locally increased to achieve uniform wall thickness of the automobile bracket 7, so as to balance the local thermal node of the automobile bracket 7 and avoid insufficient shrinkage at the thermal node.

[0021] In S1, the vertical runner 4 is connected to the lower automobile bracket 7 of the casting cavity below the second throttling block 9. The first throttling block 8 and the second throttling block 9 are provided to filter impurities in the casting liquid and adjust the flow rate of the casting liquid, reduce the impact of the casting liquid on the automobile bracket 7, and reduce the risk of thermal cracks in the automobile bracket 7. The casting liquid flows from top to bottom in the vertical runner 4, and as the liquid level of the casting liquid increases, its flow rate also increases continuously. The liquid level is controlled by adjusting the size of the first throttling block 8 and the second throttling block 9, thereby achieving the effect of controlling the flow rate.

[0022] In S2, the top riser 5 is arranged at the top of the side of the sand core 6 close to the pouring cup 1, and the top riser 5 is connected to the vertical runner 4 through the inclined shrinkage feeding channel 10. The top riser 5 is arranged at a position close to the middle hole 11 of the automobile bracket 7, so as to facilitate the shrinkage feeding of the automobile bracket 7 by the top riser 5. In the process of filling the casting liquid, part of the casting liquid in the vertical runner 4 enters the top riser 5 through the shrinkage feeding channel 10. The setting of the shrinkage feeding channel 10 facilitates the casting liquid to enter the casting cavity to fill the shrinkage hole due to volume shrinkage during the solidification process.

[0023] The diameter of the feeding channel 10 on the side close to the top riser 5 is smaller than the diameter on the side close to the vertical runner 4. The diameter of the feeding channel 10 on the side close to the vertical runner 4 gradually increases from the top riser 5 to the vertical runner 4. The shape of the feeding channel 10 can achieve the purpose of slag avoidance, improve the purity of the casting liquid, and reduce the probability of slag eye defects entering the automobile bracket 7.

[0024] In S2, the top riser 5 is a hot riser, which reduces or eliminates shrinkage cavities and shrinkage defects caused by the solidification and shrinkage of the casting liquid.

[0025] In this embodiment, with the help of CAE simulation technology, through repeated simulations and adjustments, a solution is obtained in which DISA vertical line production is adopted, the middle hole adopts a lower core, and side top pouring and a top hot riser are adopted.

[0026] Therefore, the present invention adopts a new process for producing a new energy vehicle bracket mold in a vertical line according to the above steps, which is suitable for producing a lower core cast bracket with a middle hole. It is formed by a combination of a sand mold and a sand core, which is convenient for demolding the middle hole. The thermal field of the automobile bracket during the casting process is used to achieve top-down shrinkage compensation. At the same time, the top riser is used to feed liquid to improve the shrinkage compensation efficiency of the top riser.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A new process for producing new energy vehicle bracket molds in a vertical line, characterized by: Using DISA vertical line production, the middle hole of the car bracket is formed using a sand core, including the following steps: S1, side top pouring is carried out from the pouring cup, and the pouring liquid enters the pouring cavity through the horizontal runner, main overlap and vertical runner in sequence; S2. When pouring reaches 80% of the pouring cavity, water is introduced through the top riser, and the first throttle block and the second throttle block adjust the flow rate to complete the simultaneous filling of the upper automobile bracket and the lower automobile bracket in the pouring cavity.

2. According to claim 1, a new process for producing a new energy vehicle bracket mold in a vertical line is characterized by: In S1, the center of the top of the horizontal runner is connected to the pouring cup, both sides of the horizontal runner are connected to the main overlap, the main overlap is connected to the vertical runner, and the vertical runner is connected to the first throttling block and the second throttling block in sequence.

3. According to claim 1, a new process for producing a new energy vehicle bracket mold in a vertical line is characterized by: In S1, pouring cavities are provided on both sides of the vertical pouring channel, and sand cores are placed in the pouring cavities.

4. According to claim 1, a new process for producing a new energy vehicle bracket mold in a vertical line, characterized in that: In S2, the top riser is arranged on the top of one side of the sand core close to the pouring cup, and the top riser is connected with the vertical pouring channel through an inclined shrinkage feeding channel.

5. According to claim 3, a new process for producing a new energy vehicle bracket mold in a vertical line is characterized by: In S1, the middle hole of the upper automobile bracket and the middle hole of the lower automobile bracket in the casting cavity share a sand core.

6. According to claim 5, a new process for producing a new energy vehicle bracket mold in a vertical line is characterized by: In S1, the vertical pouring channel is connected to the lower automobile support of the pouring cavity below the second throttling block.

7. According to claim 1, a new process for producing a new energy vehicle bracket mold in a vertical line is characterized by: In S2, the top riser is a hot riser.

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