Die for pressure casting of anti-deformation motor casing

Abstract

The utility model relates to an anti-deformation motor casing die-casting die which comprises a lower die and an upper die, the bottom face of the upper die is attached to the top face of the lower die, a cavity is formed in the top face of the lower die, a core die is arranged in the cavity, the upper die is arranged in a lifting mode through a driving piece, and a feeding port communicated with the cavity is formed in the top face of the upper die. A containing cavity is formed in the bottom of the lower die, an ejection assembly is arranged in the containing cavity and comprises an ejection rod, the ejection rod is arranged in a lifting mode, the ejection rod can ascend to eject the motor shell, and the ejection rod can descend to the position that the top face of the ejection rod is flush with the inner bottom wall of the cavity; the inner wall of the cavity and the bottom surface of the upper mold are coated with a release agent; the containing cavity penetrates through the two opposite side walls of the lower die, and an air hole communicating with the cavity is formed in the inner top wall of the containing cavity. The motor shell mold has the effects that the possibility of deformation of the motor shell and the mold is reduced, so that the quality of the motor shell is improved, and the service life of the mold is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting dies, in particular to a die for die-casting a deformation-resistant motor housing. Background Art

[0002] Die casting is a method of casting liquid die forging, a process completed on a dedicated die casting forging machine. In the production of motor housings, die casting molds are required for processing and forming.

[0003] In the related technology, the processing mold of the motor housing includes a lower mold and an upper mold, the lower mold includes a circular base plate and two arc-shaped plates, the two arc-shaped plates are spliced ​​along the circumference of the circular base plate and fixed by bolts, and the two arc-shaped plates are also fixed to the circular base plate by bolts. A cavity is formed between the two arc-shaped plates, and a core mold is arranged in the cavity. The core mold is fixed to the center of the circular base plate, the upper mold and the lower mold are also fixed by bolts, and the upper mold is provided with a feed port connected to the cavity.

[0004] After the motor housing is cooled and formed, it is necessary to remove the upper mold first, and then remove the two arc plates of the lower mold to take out the formed motor housing. In the process of removing the mold, the formed motor housing and the mold will be deformed, affecting the quality of the motor housing and the service life of the mold. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a mold for die-casting of a deformation-resistant motor casing.

[0006] The present application provides a die-casting mold for an anti-deformation motor housing using the following technical solution:

[0007] A die for die-casting an anti-deformation motor housing, comprising a lower die and an upper die, wherein the bottom surface of the upper die is in contact with the top surface of the lower die, a cavity is formed on the top surface of the lower die, a core die is arranged in the cavity, the upper die is lifted and lowered by a driving member, a feeding port connected to the cavity is formed on the top surface of the upper die, a receiving chamber is formed at the bottom of the lower die, an ejection assembly is arranged in the receiving chamber, the ejection assembly comprises an ejector rod, the ejector rod is lifted and lowered, the ejector rod can be raised to eject the motor housing, and the ejector rod can be lowered to the point where the top surface of the ejector rod is flush with the inner bottom wall of the cavity;

[0008] The inner wall of the cavity and the bottom surface of the upper mold are coated with a release agent;

[0009] The accommodating chamber passes through two opposite side walls of the lower mold, and an air hole communicating with the mold cavity is opened on the inner top wall of the accommodating chamber;

[0010] During the molding process, the internal thread of the air hole is connected with a plugging bolt, and the top surface of the plugging bolt is flush with the inner bottom wall of the cavity;

[0011] During the demoulding process, the blocking bolt is separated from the air hole, and the air hole is connected to an external air source through an air pipe and ventilates the cavity.

[0012] Furthermore, it also includes a support frame, the driving member is a driving cylinder, the piston rod of the driving cylinder passes through the support frame and is fixedly connected to the top surface of the upper mold, a limiting rod is arranged on the top surface of the lower mold, the limiting rod is located at the four corners of the lower mold, and a limiting hole for the limiting rod to pass through is opened on the bottom surface of the upper mold.

[0013] Furthermore, a plurality of ejector rods are arranged equidistantly along the circumference of the motor housing, and the ejection assembly also includes a synchronization plate, and the bottom surfaces of the plurality of ejector rods are fixedly connected to the synchronization plate at the same time, and a lifting assembly for driving the ejector rods to rise and fall is arranged below the synchronization plate.

[0014] Furthermore, the support frame is C-shaped, and the bottom of the support frame is fixedly connected to an L-shaped support seat, and the lifting assembly includes a driving motor, a first bevel gear, a second bevel gear, and a driving screw. The first bevel gear is coaxially connected to the output shaft of the driving motor, and the second bevel gear is coaxially connected to the driving screw. The first bevel gear and the second bevel gear are meshed. The top end of the driving screw passes through the bottom plate of the support frame and then enters the accommodating chamber. The top end of the driving screw is rotatably connected to the inner top wall of the accommodating chamber, and the bottom end of the driving screw is rotatably connected to the top surface of the horizontal plate of the support seat, and the driving screw passes through the synchronization plate and is threadedly connected to the synchronization plate.

[0015] Furthermore, the bottom end of the driving screw is rotatably connected to the top surface of the horizontal plate of the support seat through a bearing.

[0016] Furthermore, a circle of limiting ring plate is arranged on the top peripheral side wall of the ejector rod, and a limiting ring groove for embedding the limiting ring plate is opened on the inner bottom wall of the cavity, and the top surface of the limiting ring plate is flush with the inner bottom wall of the cavity.

[0017] Furthermore, a push rod is provided on the top plate of the support frame, and the bottom end of the push rod passes through the top plate of the support frame and then enters the upper mold. The bottom surface of the push rod is flush with the bottom surface of the upper mold. The push rod is slidably connected to the upper mold, and the push rod is threadedly connected to the top plate of the support frame.

[0018] Furthermore, the top end of the push rod passes through the top plate of the support frame, and the part of the top end of the push rod passing through the support frame is coaxially connected with a positioning ring plate. When the bottom surface of the positioning ring plate is in contact with the top surface of the top plate of the support frame, the bottom surface of the push rod is flush with the bottom surface of the upper mold.

[0019] In summary, this application includes the following beneficial technical effects:

[0020] 1. When processing and forming the motor shell, apply a release agent to the cavity of the lower mold and the bottom surface of the upper mold, then extend the piston rod of the drive cylinder so that the upper mold descends to be flush with the top surface of the upper mold, and then inject the molten die-casting raw material into the feed port and wait for cooling and forming; after the motor shell is formed, the piston rod of the drive cylinder retracts, driving the upper mold to rise to separate from the lower mold. At this time, under the action of the push rod, the motor shell is not easily deformed by the movement of the upper mold, and then the push rod is rotated until it does not hinder the removal of the motor shell, and then the sealing bolt is removed and the cavity is ventilated through the air hole to facilitate demoulding, further reducing the deformation of the motor shell, and then start the drive motor, the drive motor drives the drive screw to rotate, so that the synchronous plate drives multiple ejector rods to rise to stably eject the formed motor shell upward, thereby obtaining a formed motor shell without disassembling the mold. It is not only not easy to deform and damage the formed motor shell, but also not easy to deform and damage the mold, thereby improving the quality of the motor shell and the service life of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a mold for die-casting an anti-deformation motor housing in an embodiment of the present application.

[0022] Figure 2 It is a structural schematic diagram used to display the cavity and core mold in the embodiment of the present application.

[0023] Figure 3 It is a schematic diagram of the structure of the positioning ring plate used to illustrate the embodiment of the present application.

[0024] Explanation of the accompanying drawings: 1. lower mold; 11. cavity; 111. limiting ring groove; 12. core mold; 13. accommodating chamber; 2. upper mold; 21. feed inlet; 3. support frame; 31. support seat; 4. ejector assembly; 41. ejector rod; 411. limiting ring plate; 42. synchronization plate; 5. air hole; 6. driving cylinder; 7. limiting rod; 71. limiting hole; 8. push rod; 81. positioning ring plate; 9. lifting assembly; 91. driving motor; 92. first bevel gear; 93. second bevel gear; 94. driving screw; 95. bearing. DETAILED DESCRIPTION

[0025] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0026] The utility model discloses a die for die-casting a deformation-resistant motor housing.

[0027] Reference Figure 1-3The die casting mold for anti-deformation motor housing includes a lower mold 1, an upper mold 2 and a support frame 3. The bottom surface of the upper mold 2 is in contact with the top surface of the lower mold 1. A cavity 11 is provided on the top surface of the lower mold 1. A core mold 12 is provided in the cavity 11. The upper mold 2 is lifted and lowered by a driving member. A feeding port 21 connected to the cavity 11 is provided on the top surface of the upper mold 2. A receiving chamber 13 is provided at the bottom of the lower mold 1. An ejection assembly 4 for ejecting the motor housing is provided in the receiving chamber 13. A release agent is coated on the inner wall of the cavity 11 and the bottom surface of the upper mold 2.

[0028] The accommodating chamber 13 penetrates the two opposite side walls of the lower mold 1, and an air hole 5 communicating with the mold cavity 11 is opened on the inner top wall of the accommodating chamber 13. During the molding process, a plugging bolt is connected to the inner thread of the air hole 5, and the nut of the plugging bolt abuts against the inner top wall of the accommodating chamber 13, and the top surface of the plugging bolt is flush with the inner bottom wall of the mold cavity 11 to prevent the die-casting raw material from leaking; during the demolding process, the plugging bolt is separated from the air hole 5, and the air hole 5 is connected to the external air source through the air pipe and ventilated to the mold cavity 11. Removing the plugging bolt and ventilating the mold cavity 11 through the air hole 5 facilitates the demolding of the motor housing.

[0029] The support frame 3 is C-shaped, and the driving member is a driving cylinder 6, which is fixedly mounted on the top surface of the top plate of the support frame 3. The piston rod of the driving cylinder 6 passes through the top plate of the support frame 3 and is fixedly connected to the top surface of the upper mold 2. A limit rod 7 is arranged on the top surface of the lower mold 1, and the limit rod 7 is located at the four corners of the lower mold 1. A limit hole 71 for the limit rod 7 to pass through is opened on the bottom surface of the upper mold 2, and the position of the limit rod 7 does not hinder the motor housing from being taken out of the cavity 11 of the lower mold 1.

[0030] A push rod 8 is arranged on the top plate of the support frame 3, and the bottom end of the push rod 8 passes through the top plate of the support frame 3 and then penetrates into the upper mold 2. The bottom surface of the push rod 8 is flush with the bottom surface of the upper mold 2, and the push rod 8 is slidingly connected to the upper mold 2. An external thread is arranged on the push rod 8, and the push rod 8 is threadedly connected to the top plate of the support frame 3. Under the action of the push rod 8, the motor housing is not easily deformed by the movement of the upper mold 2.

[0031] The top end of the push rod 8 passes through the top plate of the support frame 3, and the part where the top end of the push rod 8 passes through the support frame 3 is fixedly coaxially connected with a positioning ring plate 81. When the bottom surface of the positioning ring plate 81 is in contact with the top surface of the top plate of the support frame 3, the bottom surface of the push rod 8 is flush with the bottom surface of the upper mold 2.

[0032] The ejection assembly 4 includes an ejector rod 41 and a synchronous plate 42. The ejector rod 41 is arranged to be raised and lowered. The ejector rod 41 can rise to eject the motor housing, and can be lowered until the top surface of the ejector rod 41 is flush with the inner bottom wall of the cavity 11. Four ejector rods 41 are arranged equidistantly along the circumference of the motor housing, and the bottom surfaces of the four ejector rods 41 are fixedly connected to the synchronous plate 42 at the same time to improve the stability when ejecting the motor housing. A lifting assembly 9 for driving the ejector rod 41 to rise and fall is arranged below the synchronous plate 42.

[0033] The bottom of the support frame 3 is fixedly connected with an L-shaped support seat 31. The lifting assembly 9 includes a driving motor 91, a first bevel gear 92, a second bevel gear 93, and a driving screw 94. The first bevel gear 92 is coaxially connected to the output shaft of the driving motor 91, and the second bevel gear 93 is coaxially connected to the driving screw 94. The first bevel gear 92 and the second bevel gear 93 are meshed. The top end of the driving screw 94 passes through the bottom plate of the support frame 3 and then penetrates into the accommodating chamber 13. The top end of the driving screw 94 is rotatably connected to the inner top wall of the accommodating chamber 13, and the bottom end of the driving screw 94 is rotatably connected to the top surface of the horizontal plate of the support seat 31. The driving screw 94 passes through the synchronous plate 42 and is threadedly connected to the synchronous plate 42. The bottom end of the driving screw 94 is rotatably connected to the top surface of the horizontal plate of the support seat 31 through a bearing 95.

[0034] After the drive motor 91 is started, it drives the first bevel gear 92 to rotate, drives the second bevel gear 93 to rotate, drives the drive screw 94 to rotate, drives the synchronous plate 42 to rise, so that the push rod 41 rises and pushes the motor housing out, and the drive motor 91 rotates in the opposite direction and drives the synchronous plate 42 to descend to its original position.

[0035] A circle of limiting ring plate 411 is arranged on the top peripheral side wall of the ejector pin 41, and a limiting ring groove 111 is provided on the inner bottom wall of the cavity 11 for the limiting ring plate 411 to be embedded, and the top surface of the limiting ring plate 411 is flush with the inner bottom wall of the cavity 11. The setting of the limiting ring plate 411 prevents the ejector pin 41 from being separated from the cavity 11.

[0036] The implementation principle of a die casting mold for an anti-deformation motor housing in the embodiment of the present application is as follows:

[0037] When processing and forming the motor shell, a release agent is applied to the cavity 11 of the lower mold 1 and the bottom surface of the upper mold 2, and then the piston rod of the driving cylinder 6 is extended to make the upper mold 2 descend to be flush with the top surface of the upper mold 2, and then the molten die-casting raw material is injected into the feed port 21 and wait for cooling and forming; after the motor shell is formed, the piston rod of the driving cylinder 6 is retracted, driving the upper mold 2 to rise to be separated from the lower mold 1. At this time, under the action of the push rod 8, the motor shell is not easily deformed by the movement of the upper mold 2, and then the push rod 8 is rotated until it does not hinder the removal of the motor shell, and then the sealing bolt is removed and the cavity 11 is ventilated through the air hole 5 to facilitate demoulding and further reduce the deformation of the motor shell, and then the driving motor 91 is started, and the driving motor 91 drives the driving screw 94 to rotate, so that the synchronous plate 42 drives the multiple ejector rods 41 to rise to stably eject the formed motor shell upward, thereby obtaining a formed motor shell without disassembling the mold. It is not only not easy to cause deformation and damage to the formed motor shell, but also not easy to cause deformation and damage to the mold, thereby improving the quality of the motor shell and the service life of the mold.

[0038] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A die for die-casting of an anti-deformation motor housing, characterized in that: The invention comprises a lower mold (1) and an upper mold (2), wherein the bottom surface of the upper mold (2) is in contact with the top surface of the lower mold (1), a mold cavity (11) is provided on the top surface of the lower mold (1), a core mold (12) is arranged in the mold cavity (11), the upper mold (2) is arranged to be lifted and lowered by a driving member, a material inlet (21) is provided on the top surface of the upper mold (2) and is connected to the mold cavity (11), a receiving chamber (13) is arranged at the bottom of the lower mold (1), an ejection assembly (4) is arranged in the receiving chamber (13), and the ejection assembly (4) comprises an ejector rod (41), the ejector rod (41) is arranged to be lifted and lowered, the ejector rod (41) can be raised to eject the motor housing, and the ejector rod (41) can be lowered to the point where the top surface of the ejector rod (41) is flush with the inner bottom wall of the mold cavity (11); The inner wall of the cavity (11) and the bottom surface of the upper mold (2) are coated with a mold release agent; The accommodating chamber (13) passes through two opposite side walls of the lower mold (1), and an air hole (5) communicating with the mold cavity (11) is opened on the inner top wall of the accommodating chamber (13); During the molding process, the air hole (5) is internally threadedly connected with a plugging bolt, and the top surface of the plugging bolt is flush with the inner bottom wall of the cavity (11); During the demoulding process, the blocking bolt is separated from the air hole (5), and the air hole (5) is connected to an external air source through an air pipe and ventilates the mold cavity (11).

2. The die for die-casting of an anti-deformation motor housing according to claim 1, characterized in that: It also includes a support frame (3), the driving member is a driving cylinder (6), the piston rod of the driving cylinder (6) passes through the support frame (3) and is fixedly connected to the top surface of the upper mold (2), a limiting rod (7) is arranged on the top surface of the lower mold (1), the limiting rod (7) is located at the four corners of the lower mold (1), and a limiting hole (71) for the limiting rod (7) to pass through is opened on the bottom surface of the upper mold (2).

3. The die for die-casting of an anti-deformation motor housing according to claim 2, characterized in that: A plurality of the ejector rods (41) are arranged equidistantly along the circumference of the motor housing. The ejector assembly (4) further comprises a synchronization plate (42). The bottom surfaces of the plurality of ejector rods (41) are fixedly connected to the synchronization plate (42) at the same time. A lifting assembly (9) for driving the ejector rods (41) to move upward and downward is arranged below the synchronization plate (42).

4. The die for die-casting of an anti-deformation motor housing according to claim 3, characterized in that: The support frame (3) is C-shaped, and the bottom of the support frame (3) is fixedly connected to an L-shaped support seat (31). The lifting assembly (9) comprises a driving motor (91), a first bevel gear (92), a second bevel gear (93), and a driving screw (94). The first bevel gear (92) is coaxially connected to the output shaft of the driving motor (91), and the second bevel gear (93) is coaxially connected to the driving screw (94). The first bevel gear (92) and the second bevel gear (93) are meshed. The top end of the driving screw (94) passes through the bottom plate of the support frame (3) and then enters the accommodating chamber (13). The top end of the driving screw (94) is rotatably connected to the inner top wall of the accommodating chamber (13), and the bottom end of the driving screw (94) is rotatably connected to the top surface of the horizontal plate of the support seat (31). The driving screw (94) passes through the synchronous plate (42) and is threadedly connected to the synchronous plate (42).

5. The die for die-casting of an anti-deformation motor housing according to claim 4, characterized in that: The bottom end of the driving screw rod (94) is rotatably connected to the top surface of the horizontal plate of the support seat (31) via a bearing (95).

6. The die for die-casting of an anti-deformation motor housing according to claim 3, characterized in that: A circle of limiting ring plate (411) is arranged on the top peripheral side wall of the push rod (41), and a limiting ring groove (111) for the limiting ring plate (411) to be embedded is opened on the inner bottom wall of the cavity (11), and the top surface of the limiting ring plate (411) is flush with the inner bottom wall of the cavity (11).

7. The die for die-casting of an anti-deformation motor housing according to claim 2, characterized in that: A push rod (8) is arranged on the top plate of the support frame (3), the bottom end of the push rod (8) passes through the top plate of the support frame (3) and then penetrates into the upper mold (2), the bottom surface of the push rod (8) is flush with the bottom surface of the upper mold (2), the push rod (8) is slidably connected to the upper mold (2), and the push rod (8) is threadedly connected to the top plate of the support frame (3).

8. The die for die-casting of an anti-deformation motor housing according to claim 7, characterized in that: The top end of the push rod (8) passes through the top plate of the support frame (3), and the portion of the top end of the push rod (8) that passes through the support frame (3) is coaxially connected to a positioning ring plate (81). When the bottom surface of the positioning ring plate (81) is in contact with the top surface of the top plate of the support frame (3), the bottom surface of the push rod (8) is flush with the bottom surface of the upper mold (2).

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