Die-casting die for motor shell

Abstract

The utility model relates to a die-casting die for a motor shell, which comprises an upper die frame, a lower die frame, an upper die core and a lower die core, the upper die frame and the lower die frame are stacked up and down, and the upper die core and the lower die core which are stacked up and down are arranged between the upper die frame and the lower die frame. An inner insert is arranged in the middle of the lower end face of the upper mold core, a middle boss is arranged in the middle of the upper end face of the lower mold core, a front core-pulling block is installed on the front portion of the lower mold frame, a rear core-pulling block is installed on the rear portion of the lower mold frame, a left core-pulling block is installed on the left portion of the lower mold frame, and a right core-pulling block is installed on the right portion of the lower mold frame. A front core-pulling block is installed on the left portion of the lower mold frame, a rear core-pulling block is installed on the right portion of the lower mold frame, a right core-pulling block is installed on the right portion of the lower mold frame, a columnar mold cavity structure is defined by the front core-pulling block, the rear core-pulling block, the left core-pulling block and the right core-pulling block, and the internal insert is inserted into the middle of the mold cavity structure. The mold has the characteristics of improving product quality, facilitating product demolding and the like.

Description

Technical Field

[0001] This utility model relates to the field of die-casting mold technology, and in particular to a die-casting mold for motor housing. Background Technology

[0002] Motor housings are generally produced using die-casting molds. In conventional motor housing production, the outer ring of the motor housing is formed using two mold cores, one above the other, while the inner cavity structure in the middle is maintained by a core-pulling structure. However, this type of die-casting mold has a problem: when the motor housing needs to have multiple heat dissipation fins, demolding becomes very difficult, which is not conducive to product production. To solve the above problems, the die-casting mold needs to be improved. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a die-casting mold for motor housing, which has the characteristics of improving product quality and facilitating product demolding.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a die-casting mold for motor housing is provided, including an upper mold frame, a lower mold frame, an upper mold core, and a lower mold core. The upper mold frame and the lower mold frame are stacked vertically. The upper mold core and the lower mold core are installed between the upper mold frame and the lower mold frame. An internal insert is provided at the middle of the lower end face of the upper mold core. A central boss is provided at the middle of the upper end face of the lower mold core. A front core-pulling block is installed on the front part of the lower mold frame. A rear core-pulling block is installed on the rear part of the lower mold frame. A left core-pulling block is installed on the left part of the lower mold frame. A right core-pulling block is installed on the right part of the lower mold frame. The front core-pulling block, the rear core-pulling block, the left core-pulling block, and the right core-pulling block surround to form a columnar mold cavity structure. The internal insert is inserted into the middle of the mold cavity structure.

[0005] In this technical solution, front core-pulling block, rear core-pulling block, left core-pulling block and right core-pulling block are set to ensure that the outer ring of the mold cavity is formed. At the same time, the structure of the upper mold core and the lower mold core is simplified during demolding. There is no need to consider the heat dissipation fin structure on the motor housing, which makes the mold opening very smooth. There is no need to set an additional upper top plate structure. While simplifying the mold, it avoids damage to the product due to excessive clamping force and improves product quality.

[0006] During operation, the mold uses the hydraulic cylinder structure on the side of the mold to pull the front core-pulling block, the rear core-pulling block, the left core-pulling block, and the right core-pulling block, so that the front core-pulling block, the rear core-pulling block, the left core-pulling block, and the right core-pulling block can gradually demold from the product, making product demolding easier and smoother.

[0007] As a supplement to this technical solution, a double-layer core-pulling assembly is installed on the front side of the lower mold frame, with the rear end and the front core-pulling block docking. The double-layer core-pulling assembly includes a core-pulling bracket, an upper bracket, a pushing cylinder, a pin cylinder, a pin, a connecting post, and a core-pulling slider. The core-pulling bracket is installed on the front side of the lower mold frame. The upper bracket, which can move back and forth, is installed on the core-pulling bracket. The pushing cylinder, with its main shaft facing backward, is installed on the core-pulling bracket. The main shaft of the pushing cylinder docks with the upper bracket. The left end of the upper bracket is inclined backward to form an inclined section. A pin cylinder is installed on this inclined section. The pin cylinder and the inclined section are arranged at an angle. A pin for inserting into the mold cavity structure is installed on the main shaft of the pin cylinder. Several connecting posts are installed on the rear side of the upper bracket. A core-pulling slider, which moves back and forth, is installed inside the front part of the lower mold frame. The core-pulling slider is connected to the rear end of the connecting post.

[0008] In this technical solution, a double-layer core-pulling assembly is set up to facilitate the forming of the side holes of the product and also to facilitate the removal of the pin from the mold, so as to avoid interference between the pin and the mold during the core-pulling process, which would lead to damage to the pin.

[0009] As a supplement to this technical solution, a flow divider cone structure is embedded in the front core-pulling block, a sprue panel is installed on the lower end face of the upper mold core, the sprue panel is sleeved on the flow divider cone structure, and a sprue sleeve that mates with the sprue panel is installed at the front of the upper mold frame.

[0010] In this technical solution, a sprue panel is provided to facilitate the setting of the main runner, allowing the molten aluminum to flow quickly into the mold cavity structure. A sprue sleeve is provided to facilitate docking with the injection port of the die-casting machine. A flow divider cone structure is provided to facilitate the diffusion of molten aluminum into the mold, thereby improving the filling speed of the mold cavity structure.

[0011] As a supplement to this technical solution, two lower venting blocks are installed side by side on the rear side of the lower mold frame, and two upper venting blocks are embedded in the rear side of the lower end face of the upper mold frame, with the lower venting blocks and upper venting blocks corresponding one-to-one.

[0012] As a supplement to this technical solution, a number of left slag bag structures are provided on the left side of the central boss, a number of right slag bag structures are provided on the right side of the central boss, and a number of rear slag bag structures are provided on the rear side of the central boss. The left slag bag structures, right slag bag structures and rear slag bag structures are connected by a shallow exhaust groove and two lower exhaust blocks.

[0013] As a supplement to this technical solution, a docking mold frame is embedded and installed at each of the four corners of the upper end face of the upper mold frame.

[0014] As a supplement to this technical solution, two rear supports extending backward are arranged side by side on the rear side of the upper mold frame.

[0015] As a supplement to this technical solution, cooling channel docking brackets are installed on both the left and right sides of the upper mold frame.

[0016] Beneficial effects: This utility model relates to a die-casting mold for motor housings. By setting a front core-pulling block, a rear core-pulling block, a left core-pulling block, and a right core-pulling block, the outer ring of the mold cavity can be formed. At the same time, the structure of the upper and lower mold cores is simplified during demolding, eliminating the need to consider the heat dissipation fin structure on the motor housing. This makes the mold opening very smooth and eliminates the need for an additional upper top plate structure. While simplifying the mold, it also avoids product damage due to excessive clamping force, thus improving product quality. It has the characteristics of improving product quality and facilitating product demolding. Attached Figure Description

[0017] Figure 1 This is a structural view of the present invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 This is a bottom view of the upper mold frame described in this utility model;

[0020] Figure 4 This is a top view of the lower mold frame described in this utility model;

[0021] Figure 5 This is a structural view of the double-layer core-pulling assembly described in this utility model;

[0022] Figure 6 This is a structural view of the left slag bag structure, the right slag bag structure, and the rear slag bag structure described in this utility model. Detailed Implementation

[0023] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0024] The present invention relates to a die-casting mold for an electric motor housing, such as... Figure 1As shown in Figure 6, the mold includes an upper mold frame 1, a lower mold frame 2, an upper mold core 3, and a lower mold core 4. The upper mold frame 1 and the lower mold frame 2 are stacked vertically. The upper mold core 3 and the lower mold core 4, which are also stacked vertically, are installed between the upper mold frame 1 and the lower mold frame 2. An internal insert 13 is provided at the middle of the lower end face of the upper mold core 3. A central boss 5 is provided at the middle of the upper end face of the lower mold core 4. A front core-pulling block 7 is installed on the front part of the lower mold frame 2. A rear core-pulling block 9 is installed on the rear part of the lower mold frame 2. A left core-pulling block 10 is installed on the left part of the lower mold frame 2. A right core-pulling block 8 is installed on the right part of the lower mold frame 2. The front core-pulling block 7, the rear core-pulling block 9, the left core-pulling block 10, and the right core-pulling block 8 surround and form a columnar mold cavity structure 6. The internal insert 13 is inserted into the middle of the mold cavity structure 6.

[0025] In this technical solution, the front core-pulling block 7, the rear core-pulling block 9, the left core-pulling block 10, and the right core-pulling block 8 are set to ensure that the outer ring of the mold cavity is formed. At the same time, the structure of the upper mold core 3 and the lower mold core 4 is simplified during demolding. There is no need to consider the heat dissipation fin structure on the motor housing, which makes the mold opening very smooth. There is no need to set an additional upper top plate structure. While simplifying the mold, it avoids damage to the product due to excessive clamping force and improves product quality.

[0026] During operation, the mold uses the hydraulic cylinder structure on the side of the mold to pull the front core-pulling block 7, the rear core-pulling block 9, the left core-pulling block 10, and the right core-pulling block 8, so that the front core-pulling block 7, the rear core-pulling block 9, the left core-pulling block 10, and the right core-pulling block 8 can gradually demold from the product, making product demolding easier and smoother.

[0027] As a supplement to this technical solution, a double-layer core-pulling assembly 17, which connects to the rear end and the front core-pulling block 7, is installed on the front side of the lower mold frame 2. The double-layer core-pulling assembly 17 includes a core-pulling bracket 24, an upper bracket 26, a pushing cylinder 25, a pin cylinder 29, a pin 30, a connecting column 27, and a core-pulling slider 28. The core-pulling bracket 24 is installed on the front side of the lower mold frame 2, and the upper bracket 26, which can move back and forth, is installed on the core-pulling bracket 24. The pushing cylinder 25 with the main shaft facing backward is also installed on the core-pulling bracket 24. 5. The main shaft of the push cylinder 25 is connected to the upper bracket 26. The left end of the upper bracket 26 is inclined backward to form an inclined part. A pin cylinder 29 is installed on the inclined part. The pin cylinder 29 and the inclined part are arranged at a 90-degree angle. A pin 30 for inserting into the mold cavity structure 6 is installed on the main shaft of the pin cylinder 29. Several connecting posts 27 are installed on the rear side of the upper bracket 26. A core-pulling slider 28 that moves back and forth is installed in the front part of the lower mold frame 2. The core-pulling slider 28 is connected to the rear end of the connecting posts 27.

[0028] In this technical solution, a double-layer core-pulling assembly 17 is set to facilitate the forming of the side hole of the product and also to facilitate the removal of the pin 30 from the mold, so as to avoid interference between the pin 30 and the mold during the core-pulling process, which would cause damage to the pin 30.

[0029] As a supplement to this technical solution, a flow divider cone structure 16 is embedded in the front core-pulling block 7, a sprue panel 14 is installed on the lower end face of the upper mold core 3, the sprue panel 14 is sleeved on the flow divider cone structure 16, and a sprue sleeve 15 that mates with the sprue panel 14 is installed at the front of the upper mold frame 1.

[0030] In this technical solution, the sprue panel 14 is set to facilitate the setting of the main runner, so that the molten aluminum can flow into the mold cavity structure 6 quickly. The sprue sleeve 15 is set to facilitate docking with the injection port of the die casting machine. The flow divider cone structure 16 is set to facilitate the diffusion of molten aluminum into the mold, thereby improving the filling speed of the mold cavity structure 6.

[0031] As a supplement to this technical solution, two lower venting blocks 11 are installed side by side on the rear side of the lower mold frame 2, and two upper venting blocks 12 are embedded in the rear side of the lower end face of the upper mold frame 1, with the lower venting blocks 11 and the upper venting blocks 12 corresponding one-to-one.

[0032] As a supplement to this technical solution, a plurality of left slag bag structures 23 are provided on the left side of the central boss 5, a plurality of right slag bag structures 21 are provided on the right side of the central boss 5, and a plurality of rear slag bag structures 22 are provided on the rear side of the central boss 5. The left slag bag structures 23, right slag bag structures 21 and rear slag bag structures 22 are connected by a shallow exhaust groove and two lower exhaust blocks 11.

[0033] As a supplement to this technical solution, a docking mold frame 19 is embedded and installed at each of the four corners of the upper end face of the upper mold frame 1.

[0034] As a supplement to this technical solution, two rear supports 20 extending backward are arranged side by side on the rear side of the upper mold frame 1.

[0035] As a supplement to this technical solution, cooling channel docking brackets 18 are installed on both the left and right sides of the upper mold frame 1.

Claims

1. A die-casting mould for an electric machine housing, comprising an upper mould frame (1), a lower mould frame (2), an upper mould core (3) and a lower mould core (4), said upper mould frame (1) and lower mould frame (2) being arranged one on top of the other, said upper mould frame (1) and lower mould frame (2) being provided with an upper mould core (3) and a lower mould core (4) arranged one on top of the other, characterised in that: An internal insert (13) is provided at the middle of the lower end face of the upper mold core (3), a central boss (5) is provided at the middle of the upper end face of the lower mold core (4), a front core-pulling block (7) is installed on the front part of the lower mold frame (2), a rear core-pulling block (9) is installed at the rear part of the lower mold frame (2), a left core-pulling block (10) is installed on the left part of the lower mold frame (2), and a right core-pulling block (8) is installed on the right part of the lower mold frame (2). The front core-pulling block (7), the rear core-pulling block (9), the left core-pulling block (10), and the right core-pulling block (8) surround to form a columnar mold cavity structure (6), and the internal insert (13) is inserted into the middle of the mold cavity structure (6).

2. A die casting mould for an electric machine housing according to claim 1, characterized in that: A double-layer core-pulling assembly (17) connecting the rear end and the front core-pulling block (7) is installed on the front side of the lower mold frame (2). The double-layer core-pulling assembly (17) includes a core-pulling bracket (24), an upper bracket (26), a push cylinder (25), a pin cylinder (29), a pin (30), a connecting column (27), and a core-pulling slider (28). The core-pulling bracket (24) is installed on the front side of the lower mold frame (2). The upper bracket (26) that can move back and forth is installed on the core-pulling bracket (24). The push cylinder (25) with the main shaft facing backward is installed on the core-pulling bracket (24). The main shaft of the push cylinder (25) is connected to the upper bracket (26). The left end of the upper bracket (26) is tilted backward to form an inclined part. A pin cylinder (29) is installed on the inclined part. The pin cylinder (29) and the inclined part are arranged at a 90-degree angle. A pin (30) for inserting into the mold cavity structure (6) is installed on the main shaft of the pin cylinder (29). Several connecting columns (27) are installed on the rear side of the upper bracket (26). A core-pulling slider (28) that moves back and forth is installed in the front part of the lower mold frame (2). The core-pulling slider (28) is connected to the rear end of the connecting column (27).

3. A die casting mould for an electric machine housing according to claim 1, characterized in that: The front core-pulling block (7) is embedded with a flow divider cone structure (16), and the lower end face of the upper mold core (3) is equipped with a sprue panel (14). The sprue panel (14) is sleeved on the flow divider cone structure (16), and the front part of the upper mold frame (1) is equipped with a sprue sleeve (15) that connects with the sprue panel (14).

4. A die casting mould for an electric machine housing according to claim 1, characterized in that: The lower mold frame (2) has two lower vent blocks (11) installed side by side on the rear left and right sides, and the upper mold frame (1) has two upper vent blocks (12) embedded in the rear of the lower end face. The lower vent blocks (11) and the upper vent blocks (12) correspond one to one.

5. A die-casting mold for an electric motor housing according to claim 1, characterized in that: The left side of the central boss (5) is provided with several left slag bag structures (23), the right side of the central boss (5) is provided with several right slag bag structures (21), and the rear side of the central boss (5) is provided with several rear slag bag structures (22). The left slag bag structures (23), right slag bag structures (21) and rear slag bag structures (22) are connected by a shallow exhaust groove and two lower exhaust blocks (11).

6. A die casting mould for an electric machine housing according to claim 1, characterized in that: The upper mold frame (1) has a docking mold frame (19) embedded at each of the four corners of its upper end face.

7. A die casting mould for an electric machine housing according to claim 1, characterized in that: The upper mold frame (1) is provided with two rear support brackets (20) extending backward side by side on the rear side.

8. A die casting mould for an electric machine housing according to claim 1, characterized in that: Cooling channel docking brackets (18) are installed on both the left and right sides of the upper mold frame (1).

Images