Die for squeeze casting of compressor bracket

Abstract

The utility model discloses a die for squeeze casting of a compressor support, which comprises a die body, the die body comprises a fixed die core and a movable die core, the movable die core and the fixed die core are folded to form a cavity and a runner, a sliding block is arranged in the cavity, a die cavity is defined by the movable die core, the fixed die core and the sliding block, and the runner is communicated with the die cavity. The mold cavity comprises a support body forming area and a rib plate forming area, the rib plate forming area is provided with two upper connecting hole forming parts, the flow channel comprises two main flow channels, each main flow channel is branched into a branch flow channel, the branch flow channels are communicated with the rib plate forming area, and the rib plate forming area is provided with two upper connecting hole forming parts. The device is characterized in that the discharge ports of the branch runners face the upper connecting hole forming parts, and one branch runner corresponds to one upper connecting hole forming part. The device has the advantages that the discharge ports of the branch runners directly face the direction of the upper connecting hole forming part, so that the pressure loss from a casting material to the upper connecting hole forming part can be effectively reduced, and the tooth breaking risk of subsequent tapping threads is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing mold technology, and in particular to a mold for extrusion casting compressor brackets. Background Technology

[0002] In automobiles, the compressor is one of the key factors affecting the performance of the air conditioning system. The compressor is typically mounted on a compressor bracket, which is then fixedly connected to the vehicle's sheet metal components to ensure its secure installation in its designated location within the vehicle. Due to cost control measures, automobile structures are becoming increasingly compact, resulting in less space available for compressor installation. Consequently, the structure of the compressor bracket is becoming increasingly complex to accommodate these installations. One currently used compressor bracket structure is shown below. Figure 1 As shown, the bracket includes a support body A1. The bottom of the support body A1 near the support body A1 is provided with two lower connecting holes A2. The upper part of the support body A1 is connected to a rib plate A2. The upper part of the rib plate A2 is provided with two lower connecting holes A3. The two upper connecting holes A3 are far away from and isolated from the top of the support body A1. The mold currently used to manufacture the compressor bracket has two main channels for aligning with the mold cavity for manufacturing the bracket body A1. Since there is a certain height difference between the mold cavity of the bracket body and the mold cavity of the rib, a branch channel is designed to branch off from each main channel to align with the mold cavity for manufacturing the rib A2. The casting material in the branch channel first enters the mold cavity corresponding to the rib, and then flows to the mold cavity corresponding to the upper connecting hole A3. During the flow of the casting material, there is pressure loss. Therefore, with this type of mold, when the casting material enters the mold cavity corresponding to the upper connecting hole A3, a large part of the pressure has already been lost, resulting in insufficient casting pressure at that point. After molding, there is a great risk of thread damage when tapping threads in the connecting hole, resulting in a high scrap rate. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a mold for extrusion casting compressor brackets. The mold with this structure can effectively improve the product qualification rate.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A mold for extruding and casting a compressor bracket includes a mold body, which includes a fixed mold core and a movable mold core. The movable mold core and the fixed mold core are joined to form a cavity and a flow channel. A slider is disposed within the cavity. The inner walls of the movable mold core, the inner walls of the fixed mold core, and the slider form a mold cavity. The flow channel is connected to the mold cavity. The mold cavity includes a bracket body forming area and a rib forming area. The rib forming area has two upper connecting hole forming portions. The flow channel includes two main channels for communicating with the bracket body forming area. Each main channel branches off into a branch flow channel. The branch flow channel is connected to the rib forming area. The outlet of the branch flow channel is oriented towards the upper connecting hole forming portion. One branch flow channel corresponds to one upper connecting hole forming portion.

[0006] The ratio of the longitudinal cross-sectional area of ​​the main channel of the branch channel to the discharge port of the branch channel is 2:1 to 4:1.

[0007] Each of the upper connecting hole forming parts is provided with an overflow groove, which is provided on the fixed mold core.

[0008] The volume ratio of the overflow groove to the upper connecting hole forming part is 0.5:1 to 3:1.

[0009] Each of the aforementioned upper connecting hole forming sections is provided with a corresponding hole-forming pull rod.

[0010] Both the main flow channel and the branch flow channels are crossflow channels.

[0011] Compared with the prior art, the advantages of this utility model are: simple structure, the discharge port of the branch flow channel is directly set in the direction of the upper connecting hole forming part, which not only does not affect the manufacturing of the rib plate, but also effectively reduces the pressure loss of the casting to the upper connecting hole forming part, thereby ensuring the casting strength at this point, effectively improving the risk of tooth decay in subsequent tapping, and thus improving the product qualification rate. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the compressor bracket manufactured according to this utility model;

[0013] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0014] Figure 3 This is a three-dimensional structural diagram of the fixed mold core in this utility model;

[0015] Figure 4 This is a top view of the fixed mold core in this utility model;

[0016] Figure 5 This is a schematic diagram of the simulated flow channel structure of this utility model. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] As shown in the figure, a mold for extruding and casting a compressor bracket includes a mold body, which includes a fixed mold core 3 and a moving mold core 4. The moving mold core 4 and the fixed mold core 3 are joined to form a cavity and a flow channel. A slider 5 is provided in the cavity. The inner wall of the moving mold core 4, the inner wall of the fixed mold core 3 and the slider 5 form a mold cavity 6. The flow channel is connected to the mold cavity 6. The mold cavity 6 includes a bracket body forming area 61 and a rib forming area 62. The rib forming area 62 has two upper connecting hole forming parts 621. The flow channel includes two main channels 7 for communicating with the bracket body forming area 61. Each main channel 7 branches into a branch flow channel 8. The branch flow channel 8 is connected to the rib forming area 62. The outlet of the branch flow channel 8 is set in the direction of the upper connecting hole forming part 621. One branch flow channel 8 corresponds to one upper connecting hole forming part 621.

[0019] In this specific embodiment, in order to increase the pressure of the casting on the upper connecting hole forming part 621, the ratio of the longitudinal section of the main channel 81 of the branch channel 8 to the longitudinal section of the outlet 82 of the branch channel 8 is designed to be 2:1 to 4:1, thereby further ensuring the strength of the upper connecting hole A3 after forming, so as to reduce the risk of tooth decay during tapping.

[0020] In this specific embodiment, each upper connecting hole forming part 621 is provided with an overflow groove 9, and the overflow groove 9 is provided on the fixed mold core 3.

[0021] In this specific embodiment, in order to reduce the risk of backflow of casting material and reduce the risk of porosity in the upper connecting hole area, the volume ratio of the overflow groove 9 to the upper connecting hole forming part 621 is designed to be 0.5:1 to 3:1, and the specific ratio is selected according to different products.

[0022] In this specific embodiment, each upper connecting hole forming part 621 is provided with a hole forming rod 1 to facilitate hole forming.

[0023] In this specific embodiment, both the main flow channel 7 and the branch flow channel 8 are crossflow channels.

Claims

1. A mold for extruding and casting a compressor bracket, comprising a mold body, the mold body including a fixed mold core and a movable mold core, the movable mold core and the fixed mold core being joined to form a cavity and a flow channel, a slider being disposed within the cavity, the inner wall of the movable mold core, the inner wall of the fixed mold core and the slider forming a mold cavity, the flow channel communicating with the mold cavity, the mold cavity including a bracket body forming area and a rib forming area, the rib forming area having two upper connecting hole forming portions, the flow channel including two main channels for communicating with the bracket body forming area, each main channel branching into a branch flow channel, the branch flow channel communicating with the rib forming area, characterized in that... The outlet of the branch flow channel is positioned facing the upper connecting hole forming part, and one branch flow channel corresponds to one upper connecting hole forming part.

2. The mold for extrusion casting a compressor bracket as described in claim 1, characterized in that... The ratio of the longitudinal cross-sectional area of ​​the main channel of the branch channel to the discharge port of the branch channel is 2:1 to 4:

1.

3. A mold for extruding and casting a compressor bracket as described in claim 1, characterized in that... Each of the upper connecting hole forming parts is provided with an overflow groove, which is provided on the fixed mold core.

4. A mold for extruding and casting a compressor bracket as described in claim 3, characterized in that... The volume ratio of the overflow groove to the upper connecting hole forming part is 0.5:1 to 3:

1.

5. A mold for extruding and casting a compressor bracket as described in claim 1, characterized in that... Each of the aforementioned upper connecting hole forming sections is provided with a corresponding hole-forming pull rod.

6. A mold for extruding and casting a compressor bracket as described in claim 1, characterized in that... Both the main flow channel and the branch flow channels are crossflow channels.

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