Die-casting die for dual-motor integrated shell

Abstract

The invention relates to a dual-motor integrated shell die-casting die, and belongs to the technical field of dies. The die-casting die comprises a movable die and a fixed die, wherein the movable die is provided with a main mold core for forming a shell, four groups of lateral core-pulling blocks and a central forming column. And the four groups of lateral core-pulling blocks are a first lateral core-pulling block, a second lateral core-pulling block, a third lateral core-pulling block and a fourth lateral core-pulling block in sequence along the radial direction of mold opening of the mold. And four sets of core-pulling driving mechanisms, namely a first core-pulling group, a second core-pulling group, a third core-pulling group and a fourth core-pulling group, which are used for respectively driving the four groups of lateral core-pulling blocks to move are correspondingly arranged on the movable mold. The die-casting device has the effect of improving the die-casting efficiency of the double-motor integrated shell.

Description

Technical Field

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

[0002] The dual-motor integrated housing is a highly integrated design solution in the field of electric drive for new energy vehicles. It tightly arranges the key components of two drive motors in a shared housing unit, making the dual-motor configuration a whole with high structural rigidity and excellent heat dissipation performance.

[0003] The production of such large and complex components typically relies on large, precision die-casting molds. As a highly coordinated functional system, a die-casting mold mainly includes molding units, runner units, temperature control units, venting units, ejection units, and positioning and guiding units. Figure 1 The image shows the dual-motor integrated housing to be manufactured. The housing includes a first motor cavity and a second motor cavity for mounting the two motors, and a connecting bridge located between the ends of the two motor cavities.

[0004] Due to the large size and uneven wall thickness of this product, controlling the shrinkage rate is difficult when using existing molds, leading to deformation and warping of the product. To address the shortcomings of the existing technology, this application proposes a mold structure suitable for die-casting this dual-motor integrated housing. Summary of the Invention

[0005] To improve the die-casting efficiency of a dual-motor integrated housing, this application provides a die-casting mold for a dual-motor integrated housing.

[0006] The technical solution provided in this application for a dual-motor integrated housing die-casting mold is as follows: A dual-motor integrated housing die-casting mold includes a moving mold and a fixed mold. The moving mold is provided with a main core for forming the housing, four sets of lateral core-pulling blocks, and a central forming column. The four sets of lateral core-pulling blocks are arranged in the radial direction of the mold opening as a first lateral core-pulling block, a second lateral core-pulling block, a third lateral core-pulling block, and a fourth lateral core-pulling block. The moving mold is correspondingly provided with four sets of core-pulling drive mechanisms for driving the movement of the four sets of lateral core-pulling blocks respectively, which are arranged in the order of first core-pulling group, second core-pulling group, third core-pulling group, and fourth core-pulling group.

[0007] By adopting the above technical solution, the main core, four sets of side core-pulling blocks, and the central forming column can form a dual-motor integrated housing. The four sets of side core-pulling blocks move in conjunction with the core-pulling drive mechanism to achieve the forming of complex shapes. The central forming column assists in forming, which can improve the accuracy and stability of the mold forming dual-motor integrated housing and alleviate the problem of product deformation and warping caused by the difficulty in controlling the shrinkage rate during the forming of existing molds.

[0008] Optionally, the first core-pulling assembly includes a first driving member, a first fixing frame fixed to the moving mold and for mounting the first driving member, a first connecting block fixed to the first side core-pulling block, and a connecting component connecting the first connecting block and the first driving member.

[0009] By adopting the above technical solution, the structural composition of the first core-pulling mechanism is disclosed. The first fixed frame is used for the installation of the first driving component. The first connecting block connects the first side core-pulling block and the first driving component through the connecting assembly, so that the first driving component can pull the first side core-pulling block to realize the core-pulling action, which facilitates mold opening and forming of the dual-motor integrated shell.

[0010] Optionally, the connecting assembly includes a connecting rod, a connecting sleeve, and a locking sleeve. Both ends of the connecting rod are provided with locking parts. The first fixing frame has a first limiting groove for limiting the locking parts. The connecting sleeve has a second limiting groove for limiting the locking parts and the piston head of the first driving member.

[0011] By adopting the above technical solution, the structural composition of the connecting component is disclosed. The connecting rod is provided with locking heads at both ends, the first fixing plate has a first limiting groove, and the connecting sleeve has a second limiting groove, which enables the first driving component to effectively pull the first side core-pulling block and ensure that the core-pulling action is completed smoothly.

[0012] Optionally, the connecting sleeve includes two symmetrical semi-circular arc members, and the locking sleeve has a locking through hole that engages with the connecting sleeve.

[0013] By adopting the above technical solution, the connecting sleeve uses two symmetrical semi-circular arc parts, which is easy to assemble, and the locking sleeve has a locking through hole that can be inserted and matched with the connecting sleeve, which can realize a stable connection between the connecting sleeve and the locking sleeve. The operation is simple and the locking effect is stable.

[0014] Optionally, the side wall of the locking sleeve is provided with a locking through hole, and a locking element is provided in the locking through hole. The semi-circular part is provided with a locking screw hole that is threadedly engaged with the locking element.

[0015] By adopting the above technical solution, a locking through hole is opened on the side wall of the locking sleeve and a locking component is provided, and a locking insertion hole is opened on the semi-circular part. The connection between the connecting sleeve and the locking sleeve can be achieved by inserting the locking component into the locking insertion hole.

[0016] Optionally, it also includes a vacuum exhaust maintenance mechanism, which includes a mold valve seat fixed to the moving mold, a valve core mold seat for docking with the mold valve seat, and a switching drive component; The mold valve seat has a vacuum pipe that connects to the mold cavity, and a sealing plug, a sealing ring for the sealing plug to abut against, and a pre-compressed spring component that is located on the side of the sealing ring near the moving mold and connected to the spring sealing plug. The valve core mold base has a first through hole connected to the vacuum pump, a second through hole connected to the cleaning gas source, and a push valve core for pushing the spring sealing plug. The output end of the switching drive is fixedly connected to the push valve core.

[0017] By adopting the above technical solution, the vacuum exhaust maintenance mechanism can perform vacuum exhaust on the mold cavity. By switching the drive component to drive the valve core, and in conjunction with the sealing plug, sealing ring and pre-compression spring, the connection and switching between the vacuum pipeline and the vacuum pump or cleaning gas source can be realized. It can extract gas during the die casting process and clean plastic residue and blockage of the exhaust pipeline after the die casting process is completed.

[0018] Optionally, the sealing ring is further provided with a compression sealing ring on the side opposite to the push valve core, and the push valve core has a push rod passing through the compression sealing ring.

[0019] By adopting the above technical solution and setting the compression sealing ring, the sealing effect of the sealing plug under normal conditions is improved, further ensuring the working stability and reliability of the vacuum exhaust maintenance mechanism.

[0020] Optionally, the outer wall of the push valve core and the inner wall of the valve core mold base are fitted together, and the first through hole is located on the side of the second through hole away from the moving mold; When the valve core pushes the sealing plug to connect the vacuum pipe and the valve core module, the valve core will seal the second through hole, and the first through hole will connect with the mold valve seat; When the valve core is pushed to reset, the valve core seals and covers the first through hole, and the second through hole is connected to the mold valve seat.

[0021] By adopting the above technical solution, the outer wall of the valve core and the inner wall of the valve core mold seat are pushed to fit together. Depending on their positions, the first or second through hole can be connected to the mold valve seat and the other through hole can be sealed. This enables the switching between vacuum extraction of the mold cavity and access to the cleaning gas source, improves the venting effect of the mold, reduces product defects caused by gas problems, and improves molding quality and yield.

[0022] Optionally, the valve core mold seat is provided with a sealing cover on the side away from the moving mold, and the sealing cover has a clearance hole for the output end of the switching drive to pass through. A chip removal cover plate is hinged to the sealing cover plate, and a pushing part for pushing the chip removal cover plate is provided at the end of the pushing valve core. When the pushing valve core is reset, the pushing part drives the chip removal cover plate to rotate.

[0023] By adopting the above technical solution, the sealing cover can seal the side of the conveying channel away from the moving mold, and the clearance hole can facilitate the passage of the output end of the switching drive component; the chip removal cover is hinged to the sealing cover, and the pushing part at the end of the valve core can drive the chip removal cover to rotate when pushing the valve core to reset, which can realize the chip removal function, help keep the mold clean, improve the service life of the mold and the quality of die-casting products.

[0024] In summary, this application includes at least one of the following beneficial technical effects: The moving mold features a main core, four sets of side core-pulling blocks, and a central forming pillar, which can better form the dual-motor integrated housing. The vacuum exhaust maintenance mechanism can control the connection and switching between the vacuum pipeline, vacuum pump, and cleaning gas source to achieve vacuum exhaust and cleaning maintenance of the mold cavity, reduce defects such as air holes in the products, and further improve product quality. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the dual-motor integrated housing according to an embodiment of this application. Figure 2 This is a schematic diagram of the moving model structure according to an embodiment of this application.

[0026] Figure 3 This is a schematic diagram of the fixed mold structure according to an embodiment of this application.

[0027] Figure 4 This is a schematic diagram of the structure of the four sets of core-pulling mechanisms in an embodiment of this application.

[0028] Figure 5 This is a schematic diagram of the structure of the first core-pulling mechanism in an embodiment of this application.

[0029] Figure 6 This is an exploded view of the connection component according to an embodiment of this application.

[0030] Figure 7 This is a schematic diagram of the structure of the second, third, and fourth core-pulling mechanisms according to embodiments of this application.

[0031] Figure 8 This is a schematic diagram of the vacuum exhaust maintenance mechanism according to an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Moving mold; 11. Mounting groove; 12. Main core; 13. Center forming pillar; 14. First side core-pulling block; 15. Second side core-pulling block; 16. Third side core-pulling block; 17. Fourth side core-pulling block; 2. Fixed mold; 3. First core-pulling assembly; 31. First driving component; 311. Cylinder mounting plate; 32. First fixing plate; 33. First connecting block; 331. First limiting groove; 34. Connecting assembly; 341. Connecting rod; 3411. Locking part; 342. Connecting sleeve; 3421. Second limiting groove; 3422. Semi-circular arc component; 3423. Locking hole; 3424. Positioning edge; 343. Locking sleeve; 3431 1. Locking through hole; 3432. Locking through hole; 3433. Locking component; 4. Second core pulling assembly; 5. Third core pulling component; 6. Fourth core pulling assembly; 7. Vacuum exhaust maintenance mechanism; 71. Mold valve seat; 711. Vacuum pipe; 712. Sealing plug; 713. Sealing ring; 7131. Compression sealing ring; 714. Pre-compression spring component; 72. Valve core mold seat; 721. Conveying channel; 722. First through hole; 723. Second through hole; 724. Push valve core; 7241. Push rod; 7242. Pushing part; 725. Sealing cover plate; 7251. Displacement hole; 7252. Chip removal cover plate; 73. Switching drive component; 74. Chip collection box. Detailed Implementation

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this invention can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0034] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0035] This application discloses a die-casting mold for a dual-motor integrated housing.

[0036] Reference Figure 1 and Figure 2A dual-motor integrated housing die-casting mold includes a moving mold 1 and a fixed mold 2. The moving mold 1 has an installation groove 11 on its end face, and a main core 12 for forming the housing, four sets of side core-pulling blocks, and a central forming pillar 13 are provided on the installation groove 11. The main core 12 is fixedly installed on the moving mold 1. The moving mold 1 has an ejection through hole corresponding to the main core 12, and an ejector rod for ejecting the product is installed in the ejection through hole. The four sets of side core-pulling blocks are slidably installed in the installation groove 11, and the central forming pillar 13 is fixed to the bottom wall of the installation groove 11.

[0037] Reference Figure 3 The four sets of side core-pulling blocks are, in order, the first side core-pulling block 14, the second side core-pulling block 15, the third side core-pulling block 16, and the fourth side core-pulling block 17 along the radial direction of the mold opening. The moving mold 1 is equipped with four sets of first core-pulling group 3, second core-pulling group 4, third core-pulling group, and fourth core-pulling group 6, which respectively pull the four sets of side core-pulling blocks.

[0038] Reference Figure 4 The first core-pulling assembly 3 includes a first driving component 31, a first fixing plate 32, a first connecting block 33, and a connecting assembly 34. The first driving component 31 is a driving cylinder, and a cylinder mounting plate 311 is fixed to the end of its cylinder body. The first fixing plate 32 is generally U-shaped and is fixedly connected to the moving mold 1 by bolts. The first driving component 31 is fixedly mounted on the first fixing plate 32 through the cylinder mounting plate 311. The first fixing plate 32 has a driving through hole for the piston head of the first driving component 31 to pass through.

[0039] The first connecting block 33 is located between the first driving member 31 and the first side core-pulling block 14, and is fixedly connected to the first side core-pulling block 14 by bolts. Both the first connecting block 33 and the first side core-pulling block 14 are slidably arranged in the mounting groove 11. The first connecting block 33 and the first driving member 31 are connected by a connecting assembly 34.

[0040] Reference Figure 4 and Figure 5 The connecting assembly 34 includes a connecting rod 341, a connecting sleeve 342, and a locking sleeve 343. Both ends of the connecting rod 341 are provided with locking portions 3411, which are T-shaped. The first connecting block 33 has a first limiting groove 331 for partial insertion of the connecting rod 341. The first limiting groove 331 and the locking portion 3411 are adapted to each other, allowing the first fixing plate 32 to be pulled by the connecting rod 341.

[0041] The connecting sleeve 342 is a cylindrical sleeve with openings at both ends. It includes two symmetrical semi-circular arc members 3422. The connecting sleeve 342 has a second limiting groove 3421 for arranging the locking part 3411. The cross-section of the second limiting groove 3421 is I-shaped, so that the other end of the connecting rod 341 can be limited and arranged within the connecting sleeve 342. The piston head of the first driving member 31 is adapted to the second limiting groove 3421 and is limited and arranged within the second limiting groove 3421. The end face of the piston head is in contact with the end face of the locking part 3411.

[0042] The locking sleeve 343 is a circular sleeve open at both ends, and has a locking through hole 3431 that matches the inner diameter of the connecting sleeve 342. The connecting sleeve 342 also has a positioning edge 3424 at the end facing the first connecting block 33. The locking sleeve 343 is inserted into the connecting sleeve 342 and positioned by the positioning edge 3424. When the locking sleeve 343 and the connecting sleeve 342 are engaged, the end face of the locking sleeve 343 away from the positioning edge 3424 is flush with the end face of the locking sleeve 343.

[0043] The locking sleeve 343 has a locking through hole 3432 extending through both the inner and outer walls on its side wall, and a locking member 3433 is provided at the locking through hole 3432. In this embodiment, the locking member 3433 is a pin. The outer wall of the semi-circular arc member 3422 has a locking insertion hole 3423 corresponding to the locking through hole 3432. The locking member 3433 passes through the locking through hole 3432 and is press-fitted into the locking insertion hole 3423 to lock the two semi-circular arc members 3422.

[0044] The second core-pulling assembly 4 includes a second driving member 41, a second fixing plate 42 fixedly installed on the moving mold 1 and for mounting the second driving member 41, a second connecting block 43 fixedly connected to the second side core-pulling block 15, and a connecting assembly 34 for connecting the second connecting block 43 and the second driving member 41.

[0045] The third core-pulling assembly includes a third driving component 51, a third fixing plate 52 fixedly installed on the moving mold 1 and for mounting the third driving component 51, a third connecting block 53 fixedly connected to the third side core-pulling block 16, and a connecting assembly 34 for connecting the third connecting block 53 and the third driving component 51.

[0046] The fourth core-pulling assembly 6 includes a fourth driving member 61, a fourth connecting block 62 fixedly connected to the fourth side core-pulling block 17, and a connecting component 34 for connecting the fourth connecting block 62 and the fourth driving member 61.

[0047] The driving components of the second core-pulling group 4, the third core-pulling group, and the fourth core-pulling group 6 are all hydraulic cylinders, and their driving principles and connection methods are the same as those of the first core-pulling group 3. These will not be described in detail in this embodiment. Specifically, the fourth driving component 61 of the fourth core-pulling group 6 is directly fixedly connected to the moving mold 1 via the cylinder mounting plate 311.

[0048] Reference Figure 8 This application also includes a vacuum exhaust maintenance mechanism 7 for cleaning plastic residue generated during the operation of the vacuum exhaust system. The vacuum exhaust maintenance mechanism 7 includes a mold valve seat 71, a valve core mold seat 72, and a switching drive component 73.

[0049] The mold valve seat 71 has a flange base, which is fixedly installed on the moving mold 1 by bolts. The mold valve seat 71 has a vacuum pipe 711 inside, which communicates with the mold cavity. The mold valve seat 71 has a sealing plug 712, a sealing ring 713 abutting against the sealing plug 712, and a preload spring member 714 located on the side of the sealing ring 713 near the moving mold 1 and connected to the sealing plug 712.

[0050] The sealing ring 713 is fixed to the inner wall of the vacuum pipe 711, and the sealing plug 712 is located on the side of the sealing ring 713 closer to the moving mold 1. The two ends of the preload spring 714 are fixed to the end face of the sealing ring 713 and the inner wall of the vacuum pipe 711, respectively. The preload spring 714 is a compression spring that tends to move the sealing ring 713 towards the sealing ring 713. Under normal conditions, the sealing plug 712 seals against the sealing ring 713, ensuring the sealing of the cavity and reducing external air contamination of the mold cavity. The preload spring 714 also includes a telescopic guide sleeve to ensure the stability of the sealing ring's movement.

[0051] The valve core mold base 72 is generally in the shape of a strip tube, and it is mounted on the moving mold 1 by a bracket. The valve core mold base 72 is coaxially arranged with a vacuum pipe 711. The valve core mold base 72 has a conveying channel 721, and a first through hole 722 and a second through hole 723 are opened at both ends along the axial direction of the conveying channel 721. The first through hole 722 is connected to the vacuum pump, and the second through hole 723 is connected to the cleaning gas source. The first through hole 722 is located on the side of the second through hole 723 away from the moving mold 1.

[0052] The valve core 724 is slidably installed inside the valve core mold base 72, and its overall shape is an annular tube with openings at both ends. The outer wall of the valve core 724 is in contact with the inner wall of the valve core mold base 72. A push rod 7241 is provided at the end of the valve core 724 facing the moving mold 1, and the push rod 7241 and the inner hole of the sealing ring 713 are arranged coaxially.

[0053] The switching drive component 73 is a push cylinder component, and its output end is fixedly connected to the end of the push valve core 724 away from the push rod 7241. When the switching drive component 73 is activated, it drives the push rod 7241 through the sealing ring 713 and pushes the sealing plug 712 to move towards the moving mold 1, so that the mold cavity and the valve core mold seat 72 are connected, enabling the vacuuming action before die casting.

[0054] In order to improve the sealing performance of the sealing plug 712, a compression sealing ring 7131 is also provided on the side of the sealing ring 713 away from the valve core mold seat 72.

[0055] The conveying channel 721 has a sealing cover 725 at the end furthest from the moving mold 1. The sealing cover 725 has a clearance hole 7251 for the output end of the switching drive 73 to pass through. A chip discharge cover 7252 is hinged to the bottom of the sealing cover 725. A torsion spring is wound around the rotation shaft of the chip discharge cover 7252, which, under the action of the torsion spring, ensures that the chip discharge cover 7252 always tends to close the conveying channel 721. The push valve core 724 has a push part 7242 corresponding to the chip discharge cover 7252, which pushes the chip discharge cover 7252 against it when the push valve core 724 is reset, thereby connecting the conveying channel 721 to the outside. A chip collection box 74 can be installed at the bottom of the sealing cover 725 to collect residue blown off by the high-pressure gas.

[0056] The length of the push valve core 724 is adapted to the length of the conveying channel 721, so that the first through hole 722 and the second through hole 723 are connected to the conveying channel 721 in sequence. When the switching drive unit 73 is in normal state, the push valve core 724 is located on the side of the conveying channel 721 away from the moving mold 1. There is a certain gap between the push rod 7241 and the sealing ring 713. The sealing plug 712 abuts against the sealing ring 713 and is in a sealed state. At this time, the push valve core 724 seals and covers the first through hole 722, and the second through hole 723 is connected to the inside of the conveying channel 721.

[0057] After the switching drive unit 73 is started, the push rod 7241 passes through the sealing ring 713, causing the sealing plug 712 to move towards the moving mold 1, so that the mold cavity and the mold valve seat 71 and the valve core mold seat 72 are connected. At this time, the push valve core 724 seals and covers the second through hole 723, the first through hole 722 is connected to the conveying channel 721, and the chip discharge cover plate 7252 is in a sealed state.

[0058] The implementation principle of a dual-motor integrated housing die-casting mold in this application embodiment is as follows: after the product is die-cast in the cavity, four sets of core-pulling drive mechanisms are started simultaneously and slide away from the product. After the four sets of side core-pulling blocks are separated from the product, the ejector rod at the fixed molding block 12 is started to eject the product from the moving mold 1. Finally, the robot arm takes the product off.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A die-casting mold for a dual-motor integrated housing, characterized in that, The mold includes a moving mold (1) and a fixed mold (2). The moving mold (1) is provided with a main core (12) for forming the shell, four sets of side core-pulling blocks and a central forming column (13). The four sets of side core-pulling blocks are arranged in the radial direction of the mold opening as the first side core-pulling block (14), the second side core-pulling block (15), the third side core-pulling block (16) and the fourth side core-pulling block (17). The moving mold (1) is provided with four sets of core-pulling drive mechanisms for driving the four sets of side core-pulling blocks to move respectively, namely the first core-pulling group (3), the second core-pulling group (4), the third core-pulling group and the fourth core-pulling group (6).

2. The dual-motor integrated housing die-casting mold according to claim 1, characterized in that, The first core-pulling assembly (3) includes a first drive member (31), a first fixing frame fixed to the moving mold (1) and for mounting the first drive member (31), a first connecting block (33) fixed to the first side core-pulling block (14), and a connecting assembly (34) connecting the first connecting block (33) and the first drive member (31).

3. The dual-motor integrated housing die-casting mold according to claim 2, characterized in that, The connecting assembly (34) includes a connecting rod (341), a connecting sleeve (342), and a locking sleeve (343). Both ends of the connecting rod (341) are provided with locking parts (3411). The first fixing frame is provided with a first limiting groove (331) for limiting the locking part (3411). The connecting sleeve (342) is provided with a second limiting groove (3421) for limiting the locking part (3411) and the piston head of the first driving member (31).

4. The dual-motor integrated housing die-casting mold according to claim 3, characterized in that, The connecting sleeve (342) includes two symmetrical semi-circular arc parts (3422), and the locking sleeve (343) has a locking through hole (3431) that is inserted into the connecting sleeve (342).

5. A die-casting mold for a dual-motor integrated housing according to claim 4, characterized in that, The locking sleeve (343) has a locking through hole (3432) on its side wall, and a locking member (3433) is provided in the locking through hole (3432). The semi-circular part (3422) has a locking screw hole that is threadedly engaged with the locking member (3433).

6. The dual-motor integrated housing die-casting mold according to claim 1, characterized in that, It also includes a vacuum exhaust maintenance mechanism (7), which includes a mold valve seat (71) fixed to the moving mold (1), a valve core mold seat (72) for docking with the mold valve seat (71), and a switching drive (73). The mold valve seat (71) has a vacuum pipe (711) that communicates with the mold cavity, and a sealing plug (712), a sealing ring (713) for the sealing plug (712) to abut in the vacuum pipe (711), and a preloaded spring (714) that is located on the side of the sealing ring (713) near the moving mold (1) and connected to the sealing plug (712). The valve core mold base (72) has a first through hole (722) for connecting to the vacuum pump, a second through hole (722) for connecting to the cleaning gas source, and a push valve core (724) for pushing the sealing plug (712). The output end of the switching drive (73) is fixedly connected to the push valve core (724).

7. A die-casting mold for a dual-motor integrated housing according to claim 6, characterized in that, The sealing ring (713) is provided with a compression sealing ring (7131) on the side opposite to the push valve core (724) for the sealing ring (713) to abut against, and the push valve core (724) has a push rod (7241) passing through the compression sealing ring (7131).

8. A die-casting mold for a dual-motor integrated housing according to claim 7, characterized in that, The outer wall of the push valve core (724) and the inner wall of the valve core mold base (72) are attached together, and the first through hole (722) is located on the side away from the moving mold (1) of the second through hole (723); When the push valve core (724) pushes the sealing plug (712) to connect the vacuum pipe (711) and the valve core module, the push valve core (724) seals and covers the second through hole (723), and the first through hole (722) connects with the mold valve seat (71); When the push valve core (724) is reset, the push valve core (724) seals and covers the first through hole (722), and the second through hole (723) is connected to the mold valve seat (71).

9. A die-casting mold for a dual-motor integrated housing according to claim 8, characterized in that, The valve core mold base (72) is provided with a sealing cover plate (725) on the side away from the moving mold (1), and the sealing cover plate (725) has a clearance hole (7251) through which the output end of the switching drive (73) passes. A chip removal cover plate (7252) is hinged to the sealing cover plate (725). The end of the push valve core (724) is provided with a push part (7242) for pushing the chip removal cover plate (7252). When the push valve core (724) is reset, the push part (7242) drives the chip removal cover plate (7252) to rotate.

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