A casting structure for casting a battery box assembly carrier support

Abstract

The utility model relates to a kind of for casting battery box assembly bearing bracket's casting structure, including horizontal die head, horizontal die head below is equipped with casting runner, the lower side of casting runner is equipped with several groups of tree support cavity, each group of tree support cavity is connected with casting runner by ingate;Group tree support cavity is formed by 3-9 bearing bracket cavities in turn, and split gap is equipped between adjacent bearing bracket cavities. When using, several groups of tree support cavities are arranged in parallel, and multiple bearing bracket cavities of each group of tree support cavities share an ingate, after mold group casting forming, utilize cutting machine to split the multiple parts of combination, improve production efficiency. At the same time, the use amount of medium temperature wax and metal raw material is reduced, the cracking risk when shell dewaxing is reduced, easy to operate, improve the yield of casting, save cost.

Description

Technical Field

[0001] This utility model relates to the technical field of machining, specifically a casting structure for casting a support bracket for a battery box assembly. Background Technology

[0002] In the prior art, the parts in the automotive battery box assembly support system are all made using precision casting in order to achieve high quality, high surface finish and low machining allowance. The battery bracket is generally a 0.4 kg part. In order to increase production efficiency, multiple parts are usually connected to a gating system to form a string, and a gating gate is set at a certain part of the part to connect with the gating system.

[0003] The investment casting process involves first pressing a wax model similar in shape to the part, then coating the wax surface with refractory material, and finally melting the wax model in a steam dewaxing kettle to remove the molten wax. Because wax and refractory material have different coefficients of expansion, improper ingate design can lead to the scrapping of the entire product. Therefore, conventional foundries design the ingate for battery bracket parts at the center of the plate surface, using a sufficiently large runner to compensate for shrinkage, and then introducing the molten metal into the casting cavity through the runner. This long runner results in a generally low yield and high cost, while also posing a significant risk of cracking during mold shell dewaxing.

[0004] Therefore, there is an urgent need in the market for a new type of casting structure that can solve the above problems in order to improve product quality and reduce costs. Summary of the Invention

[0005] The purpose of this utility model is to provide an improved casting structure for a support bracket for casting a battery box assembly. Through structural improvement, the risk of cracking during mold opening and dewaxing is reduced, the yield of castings is increased, and costs are saved.

[0006] To achieve the above objectives, the technical solution of this utility model is: a casting structure for casting a support bracket for a battery box assembly, characterized in that: the casting structure includes a horizontal mold head, a casting channel is provided below the horizontal mold head, and several tree support cavities are provided below the casting channel, each tree support cavity is connected to the casting channel through an inner gate; the tree support cavity is composed of 3-9 support bracket cavities connected in series, and a dividing gap is provided between adjacent support bracket cavities.

[0007] Preferably, adjacent tree support cavities are connected by a casting channel at the top, the bottoms of adjacent tree support cavities are isolated from each other, the casting channel is rectangular with arc-shaped cavities at both ends, and the interior of the casting channel is equipped with guide strips.

[0008] Furthermore, the horizontal mold head includes a mold head body, a trumpet-shaped injection port at the bottom of the mold head body, a contraction section between the injection port and the mold head body, a reinforcing rib in the contraction section, and an exhaust pipe between the mold head body and the casting channel.

[0009] Furthermore, there are two exhaust pipes, symmetrically arranged on both sides of the mold head body. The top of the casting channel is provided with exhaust holes corresponding to the exhaust pipes, and the distance between the two exhaust holes is 1.5-2.5 times the diameter of the injection port.

[0010] Furthermore, each support bracket cavity includes a square cavity and fixed support plate cavities on both sides of the square cavity. The square cavities of adjacent support bracket cavities are interconnected, and the topmost square cavity is directly connected to the ingate. The dividing gap is 1-3mm.

[0011] Furthermore, there are 2-6 tree support cavities below the casting channel, and each tree support cavity is composed of 5 load-bearing support cavities connected in series.

[0012] Compared with the prior art, the technical solution of this utility model not only improves the overall technical solution, but also includes many detailed improvements. Specifically, it has the following beneficial effects: 1. The improved solution of this utility model includes a horizontal mold head, a casting channel below the horizontal mold head, and several tree support cavities below the casting channel. Each tree support cavity is connected to the casting channel through an inner gate. The tree support cavity is composed of 3-9 supporting cavities connected in series. The above structure reduces the amount of medium-temperature wax and metal raw materials used, reduces the risk of cracking during mold shell dewaxing, simplifies operation, improves the yield of castings, and saves costs. 2. In the technical solution of this utility model, there are 2-6 tree support cavities below the casting channel. Each tree support cavity is composed of 5 bearing support cavities connected in series. There are dividing gaps between adjacent bearing support cavities. The smaller gaps reduce the heat radiation of the product during casting, avoid the generation of cracks and pores, and improve the product quality. 3. In the structure of this utility model, the horizontal mold head includes a mold head body, the bottom of the mold head body is provided with a trumpet-shaped injection port, a shrinkage part is provided between the injection port and the mold head body, the shrinkage part is provided with reinforcing ribs, and an exhaust pipe is provided between the mold head body and the casting channel. This improves the structure of the casting system, enhances the overall yield of the product, reduces defects such as shrinkage cavities and porosity, and improves product quality and production efficiency. 4. This utility model has a simple structure, reasonable layout, convenient casting process, high finished product quality, and is easy to promote and utilize. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the existing technology.

[0014] Figure 2 This is a schematic diagram of the structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of the tree support cavity and the inner gate of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of the horizontal mold head and the casting channel of this utility model.

[0017] Figure 5 This is another structural schematic diagram of the present utility model.

[0018] Figure label: 1. Horizontal mold head, 2. Casting runner, 3. Tree support cavity, 4. Ingate, 5. Bearing support cavity, 6. Separation gap; 11. Die head body; 12. Inlet; 13. Shrinkage section; 14. Exhaust pipe; 21. Arc-shaped cavity; 51. Square cavity; 52. Fixed support plate cavity. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] This utility model provides a casting structure for a support bracket for casting a battery box assembly, see details below. Figure 2 The difference between it and the existing technology is that: the casting structure includes a horizontal mold head 1, a casting channel 2 is provided below the horizontal mold head, and several tree support cavities 3 are provided below the casting channel. Each tree support cavity is connected to the casting channel through an inner gate 4. The tree support cavity is composed of 3-9 load-bearing support cavities 5 connected in series, and there is a dividing gap 6 between adjacent load-bearing support cavities.

[0021] In use, several sets of tree support cavities are arranged in parallel. Each set of tree support cavities consists of 3-9 load-bearing support cavities connected in series, allowing these 3-9 load-bearing support cavities to share a single ingate. After the mold assembly is cast, a cutting machine is used to separate the assembled 3-9 parts, improving production efficiency. Simultaneously, it reduces the amount of medium-temperature wax and metal raw materials used, lowers the risk of cracking during mold shell dewaxing, simplifies operation, increases casting yield, and saves costs.

[0022] Example 1 In this embodiment, see Figure 2 , 5 The casting structure includes a horizontal mold head 1, a casting channel 2 connected to the horizontal mold head below the horizontal mold head, and several tree support cavities 3 below the casting channel. These tree support cavities are arranged in parallel to each other, and each tree support cavity is connected to the casting channel through an inner gate 4 at the top. The tree support cavity is composed of 3-9 supporting support cavities 5 connected in series, that is, these supporting support cavities share the same inner gate. There are dividing gaps 6 between adjacent supporting support cavities to facilitate cutting and separation after casting.

[0023] Specifically, adjacent tree support cavities are connected by a top casting channel, allowing molten metal to quickly reach the tree support cavity through the casting channel and ingate, achieving a rapid molding effect. The bottoms of adjacent tree support cavities are isolated from each other, eliminating the need for additional casting channels, thus saving molten metal usage and effectively improving product yield. The casting channel 2 is rectangular with arc-shaped cavities 21 at both ends. The interior of the casting channel is equipped with guide strips, ensuring that the molten metal is evenly distributed to each tree support cavity.

[0024] Further, see Figure 4 The horizontal die head includes a die head body 11, a trumpet-shaped injection port 12 at the bottom of the die head body, a contraction section 13 between the injection port and the die head body, the contraction section having reinforcing ribs, and an vent pipe 14 between the die head body and the casting runner. Furthermore, there are two vent pipes, symmetrically arranged on both sides of the die head body, and the top of the casting runner has vent holes corresponding to the vent pipes. The distance between the two vent holes is 1.5-2.5 times the diameter of the injection port, preferably 2 times.

[0025] Further, see Figure 3 Each support bracket cavity 5 includes a square cavity 51 and fixed support plate cavities 52 located on both sides of the square cavity. The square cavities of adjacent support bracket cavities are interconnected, and the topmost square cavity is directly connected to the ingate. The dividing gap is 1-3mm, preferably 2mm. Below the casting runner, there are 2-6 tree-support cavities, each tree-support cavity is composed of 5 support bracket cavities connected in series.

[0026] Example 2 In this embodiment, the casting structure includes a horizontal mold head, with a casting flow channel connected to the horizontal mold head below it. Below the casting flow channel are four tree support cavities, which are arranged parallel to each other. Each tree support cavity is connected to the casting flow channel through an ingate at the top. The tree support cavity is composed of five supporting cavities connected in series, meaning that these supporting cavities share the same ingate. There are dividing gaps between adjacent supporting cavities to facilitate cutting and separation after casting.

[0027] Specifically, the casting structure used in this implementation for the precision casting of the battery box assembly support bracket has a single casting weight of 0.36 kg and dimensions of 30*80*44.5 mm. It is made of medium-carbon chromium-molybdenum alloy steel (25CrMo). During manufacturing, five support bracket cavities are connected in series and share a single ingate. A 0.2 mm gap is reserved between each of the five support bracket cavities to facilitate casting segmentation. With a dedicated horizontal die head, 20 pieces can be assembled per string. The ingate weighs 71 g, and the total mass of the entire gating system is 14.81 kg. The new scheme achieves a yield of 49.0%. This scheme can reduce defects such as shrinkage cavities and porosity.

[0028] The advantages of this utility model are as follows: 1. The improved solution described in this utility model improves efficiency by combining five products into one inner gate. During the wax mold assembly process, it works in conjunction with a specially designed mold head to reduce the assembly time for operators and improve efficiency. 2. In the technical solution of this utility model, the new casting system can reduce the amount of molten steel used by 3.7 kg per string, reducing the burden on the operator's fork, and one string of casting system can produce 4 more pieces than the original, increasing the yield from 35.0% to 49.0%; 3. In the structural design of this utility model, the five products are connected together, which can avoid excessive heat radiation between the parts and prevent defects such as cracks and pores.

[0029] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications or substitutions should be considered within the protection scope of the present invention.

Claims

1. A casting structure for casting a battery box assembly carrier support, characterized by: The casting structure includes a horizontal mold head, with a casting runner below the horizontal mold head. Below the casting runner are several tree support cavities, each tree support cavity connected to the casting runner through an ingate. The tree support cavity is composed of 3-9 load-bearing support cavities connected in series, with a dividing gap between adjacent load-bearing support cavities.

2. A casting structure for casting a battery box assembly carrier support according to claim 1, characterized in that: The adjacent tree support cavities are connected by the top casting channel, and the bottoms of the adjacent tree support cavities are isolated from each other. The casting channel is rectangular with arc-shaped cavities at both ends, and the inside of the casting channel is equipped with guide strips.

3. The casting structure for a support bracket for a cast battery box assembly according to claim 1, characterized in that: The horizontal die head includes a die head body, a trumpet-shaped injection port at the bottom of the die head body, a contraction section between the injection port and the die head body, a reinforcing rib in the contraction section, and an exhaust pipe between the die head body and the casting channel.

4. A casting structure for casting a battery box assembly carrier support according to claim 3, wherein: There are two vent pipes, symmetrically arranged on both sides of the mold head body. The top of the casting channel is provided with vent holes corresponding to the vent pipes. The distance between the two vent holes is 1.5-2.5 times the diameter of the injection port.

5. A casting configuration for casting a battery box assembly carrier support as defined in claim 1 wherein: Each support bracket cavity includes a square cavity and fixed support plate cavities on both sides of the square cavity. The square cavities of adjacent support bracket cavities are interconnected, and the topmost square cavity is directly connected to the ingate. The dividing gap is 1-3mm.

6. A casting structure for a support bracket for a cast battery box assembly according to claim 1, characterized in that: Below the casting channel are 2-6 tree support cavities, each of which is composed of 5 load-bearing support cavities connected in series.

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