A quick demolding device for an insulating end plate

Abstract

This invention discloses a rapid demolding device for insulating end plates, comprising an upper mold base, a lower mold base, a heat-conducting module, a support block, a bracket, and a lifting mechanism. The heat-conducting module and the support block are respectively installed in the stepped through holes of the lower mold base, and the bracket is inserted into the bottom wall of the heat-conducting module. Coolant is pre-introduced into the hollow cavity of the bracket to pre-cool the insulating end plate body of the lower cavity. Several fin gaps are opened on the heat insulation ring of the heat-conducting module to keep the annular fin portion in the several fin gaps at a high temperature. As the insulating end plate body cools and solidifies, the annular fin portion shrinks towards the connection part of the insulating end plate body, which helps to strengthen the shrinkage connection strength between the annular fin portion and the insulating end plate body. Furthermore, due to the shrinkage connection effect, the adhesion force between the annular fin portion and the insulating end plate body is weakened with the heat-conducting module, thereby solving the problem of tearing damage of the annular fin portion caused by excessive adhesion force during demolding.

Description

Technical Field

[0001] This invention relates to the technical field of injection molding equipment for insulating end plates, and specifically to a rapid demolding device for insulating end plates. Background Technology

[0002] Insulating end plates are used on motor rotors. Before the coils are wound, insulating end plates need to be installed at both ends of the rotor core to improve the insulation performance of the rotor. Insulating end plates are important injection molding components in motor products. During injection molding production, the injection molding liquid is injected into the combined cavity formed by the upper mold base and the lower mold base. The injection molding liquid is shaped in the combined cavity to obtain the molded insulating end plate. After the insulating end plate is shaped, it is demolded and removed by separating the upper mold base and the lower mold base, and then the next set of insulating end plates is injection molded.

[0003] During the injection molding production of insulating end plates, the insulating end plates have a ring-shaped fin skeleton. The insulating end plates are shaped in the combined cavity, but the ring-shaped fin skeleton is easy to stick to the cavity wall of the lower mold base. Sometimes a relatively large demolding force is required to separate the ring-shaped fin skeleton from the lower mold base, which is not conducive to the demolding of the insulating end plate products, and may even cause tearing damage to the insulating end plate products, thereby reducing the injection molding quality of the insulating end plate products. Summary of the Invention

[0004] The purpose of this invention is to provide a quick demolding device for insulating end plates, which solves the problem of tearing and demolding of the annular fin skeleton part of the insulating end plate product from the lower mold base.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A quick demolding device for insulating end plates, comprising:

[0007] The upper mold base has multiple upper cavities, and a core protrusion is provided in each upper cavity. The core protrusion is spaced apart from the cavity wall of the upper cavity. The upper mold base has injection liquid channels that communicate with the multiple upper cavities. The injection liquid channels extend outward from the opening end of the upper mold base and are connected to injection liquid hoses.

[0008] The lower mold base is located directly below the upper mold base, and the lower mold base has multiple stepped through holes;

[0009] A heat-conducting module is inserted and installed in the upper flared through hole included in the stepped through hole. A lower cavity is provided at the middle position of the heat-conducting module. A heat insulation ring is provided between the heat-conducting module and the lower cavity. The heat insulation ring is integrally connected to the heat-conducting module. Several fin slots are opened on the heat insulation ring in the circumferential direction of the lower cavity.

[0010] The support block is disposed in the lower narrow through hole included in the stepped through hole and abuts against the bottom end face of the heat conduction module;

[0011] A support block is inserted and installed on the bottom wall of the heat-conducting module. A cooling pipe is fixedly connected to the bottom wall of the support block. The support block is provided with a hollow inner cavity, which is connected to the inner cavity of the cooling pipe. The cooling pipe passes through the support block and extends downward, and a coolant hose is connected to the downwardly extending end of the cooling pipe.

[0012] The lifting mechanism is fixedly connected to the downwardly extending bottom end of the cooling pipe.

[0013] As a further aspect of the present invention, the gap between the bearing block and the wall of the lower narrow through hole is set.

[0014] As a further embodiment of the present invention: a plurality of upper support rods are evenly distributed between the bearing block and the wall of the lower narrow through hole, the top end of the upper support rod is fixedly connected to a heat conduction module, the bottom end of the upper support rod extends downward out of the lower narrow through hole, and the bottom end extending downward is fixedly connected to a rotating mechanism.

[0015] As a further embodiment of the present invention: the rotating mechanism includes a servo motor, a driving pinion, a driven gear, and a ring plate. The output end of the servo motor is sleeved with the driving pinion. The driving pinion meshes with and drives the driven gear. The ring plate is fixedly connected to the side of the driven gear. The ring plate is perpendicularly connected to the upper support rod.

[0016] As a further aspect of the present invention: the lifting mechanism is a cylinder, and the telescopic end of the cylinder is fixedly connected to a cooling pipe.

[0017] As a further aspect of the present invention: the two sides of the upper mold base slide against the demolding frame, a hydraulic cylinder is fixedly installed at the top of the demolding frame, and the extended end of the hydraulic cylinder is fixedly connected to the upper mold base.

[0018] As a further aspect of the present invention: a demolding frame is fixedly connected to both sides of the lower mold base.

[0019] As a further aspect of the present invention: the bottom wall of the bearing block is fixedly connected to the demolding frame by multiple lower support rods.

[0020] As a further aspect of the present invention: a sealing gasket is fitted on the side of the support block, and the sealing gasket is clamped and installed in the gap between the support block and the heat-conducting module.

[0021] The beneficial effects of this invention are:

[0022] (1) During the cooling and solidification process of the liquid material entering the combined cavity, a heat-conducting module and a support block are installed in the stepped through hole of the lower mold base, and a mounting block is inserted on the bottom wall of the heat-conducting module. Cooling liquid is pre-introduced through the hollow structure cavity of the support block, thereby pre-cooling the insulating end plate body of the lower cavity. Several fin gaps are opened on the heat insulation ring of the heat-conducting module so that the annular fin part in the several fin gaps is in a high temperature state. As the insulating end body cools and solidifies, the annular fin part shrinks towards the connection part of the insulating end body, which helps to strengthen the shrinkage connection strength between the annular fin part and the insulating end body. Furthermore, due to the shrinkage connection effect, the adhesion force between the annular fin part and the insulating end body is weakened, thereby solving the problem of tearing damage of the annular fin part caused by excessive adhesion force during demolding.

[0023] (2) When the upper mold base is cooled, the outer wall surface of the rotor sleeve contacts the cavity wall of the upper cavity, and the inner wall surface contacts the core protrusion. As the upper mold base and the core part cool, the inner and outer wall surfaces of the rotor sleeve cool and shrink, so that the cooling shrinkage gap facilitates the demolding and separation of the upper mold base and the rotor sleeve.

[0024] (3) The rotating mechanism facilitates the rotation of multiple upper support rods, enabling the heat-conducting module to be rotated and demolded. When the bottom of the insulating end plate body in the lower cavity is cooled and shaped, the rotating mechanism drives the heat-conducting module to rotate, causing the bottom of the rotating insulating end plate body to shrink and separate from the support block, thereby reducing the adhesion between the support block and the bottom of the insulating end plate body. At the same time, the rotating annular fin part and the shrinkage gap of the heat-conducting module cause vibration, which can reduce the adhesion between the annular fin part and the heat insulation ring, accelerate the rotation demolding action, and make the operation convenient. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the cross-section of the upper mold base of the present invention;

[0028] Figure 3 This is a schematic diagram of the lower mold base assembly heat-conducting module and bearing block of the present invention;

[0029] Figure 4 This is a schematic diagram of the lower mold base cross-section of the present invention;

[0030] Figure 5 This is an assembly diagram of the heat-conducting module, support block, and load-bearing block of the present invention;

[0031] Figure 6 This is a top view of the heat-conducting module of the present invention;

[0032] Figure 7 This is a schematic diagram of the heat-conducting module of the present invention connected to the rotating mechanism via the upper support rod;

[0033] Figure 8 This is a schematic diagram of the support block of the present invention connected to the cylinder via a cooling pipe;

[0034] Figure 9 This is a top view of the body of the molded insulating end plate of the present invention.

[0035] In the diagram: 1. Upper mold base; 100. Upper cavity; 101. Core protrusion; 102. Injection fluid channel; 2. Demolding frame; 3. Hydraulic cylinder; 4. Injection fluid hose; 5. Lower mold base; 50. Upper flared through hole; 51. Lower narrow through hole; 6. Heat conduction module; 60. Lower cavity; 61. Heat insulation ring; 62. Fin gap; 7. Bearing block; 8. Support block; 9. Cooling pipe; 10. Upper support rod; 11. Sealing gasket; 12. Coolant hose; 13. Cylinder; 14. Servo motor; 15. Drive pinion; 16. Driven gear; 17. Lower support rod; 18. Ring plate; 19. Insulating end plate body; 190. Annular fin part; 191. Rotor protrusion part. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention; in the description of this invention, "a plurality of" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] Please see Figure 1 This invention relates to a rapid demolding device for insulating end plates, comprising an upper mold base 1, a lower mold base 5, a heat-conducting module 6, a bearing block 7, a support block 8, and a lifting mechanism, used for... Figure 9 The insulating end plate shown is used for demolding. The insulating end plate includes an insulating end plate body 19, an annular fin portion 190, and a rotor protrusion portion 191.

[0039] Among them, such as Figure 2As shown, the upper mold base 1 has multiple upper cavities 100. A core protrusion 101 is provided in the upper cavity 100. The gap between the core protrusion 101 and the cavity wall of the upper cavity 100 is set. The gap is used for injection molding of the rotor protrusion 191 perpendicular to the insulating end plate body 19. The upper mold base 1 has an injection liquid channel 102 that communicates with the multiple upper cavities 100. The injection liquid channel 102 extends outward from the opening end of the upper mold base 1 and is connected to the injection liquid hose 4.

[0040] like Figure 4 As shown, the lower mold base 5 is located directly below the upper mold base 1, and the lower mold base 5 has multiple stepped through holes. The stepped through holes facilitate the assembly of the heat-conducting module 6 and the support block 7 on the lower mold base 5.

[0041] like Figure 3 and Figure 6 As shown, the heat-conducting module 6 is inserted into the upper flared through hole 50 included in the stepped through hole. A lower cavity 60 is provided at the middle position of the heat-conducting module 6. A heat insulation ring 61 is provided between the heat-conducting module 6 and the lower cavity 60, and the heat insulation ring 61 is integrally connected to the heat-conducting module 6. Several fin slots 62 located in the circumferential direction of the lower cavity 60 are opened on the heat insulation ring 61. The lower cavity 60 provided on the heat-conducting module 6 is used for injection molding the insulating end plate body 19, and the several fin slots 62 provided in the circumferential direction of the lower cavity 60 are used for injection molding the annular fin part 190.

[0042] like Figure 3 and Figure 5 As shown, the support block 7 is disposed in the lower narrow through hole 51 of the stepped through hole and abuts against the bottom end face of the heat conduction module 6. The support block 7 is used to stably support the heat conduction module 6 and to quickly transfer heat between the support block and the heat conduction module 6.

[0043] like Figure 5 As shown, the support block 8 is inserted and installed on the bottom wall of the heat-conducting module 6. The cooling pipe 9 is fixedly connected to the bottom wall of the support block 8. The support block 8 is provided with a hollow structure cavity, which is connected to the cavity of the cooling pipe 9. The cooling pipe 9 passes through the support block 7 and extends downward. A coolant hose 12 is connected to the downward extending end of the cooling pipe 9. The support block 8 with the hollow structure cavity facilitates cooling from the bottom of the injection-molded insulating end plate body 19, and then diffuses the cooling effect to the heat-conducting module 6 and the upper mold base 1.

[0044] like Figure 8 As shown, the lifting mechanism is fixedly connected to the downwardly extending bottom end of the cooling pipe 9. After the cooling injection molding insulating end plate is formed, the lifting mechanism can drive the cooling pipe 9 to extend upward, so that the support block 8 can demold the formed insulating end plate from the lower cavity 60. The demolding and ejection are fast and efficient.

[0045] When the upper mold base 1 and the lower mold base 5 are closed for injection molding, the upper cavity 100, the lower cavity 60 and several fin gaps 62 form a combined cavity. Molding liquid is injected into the injection liquid channel 102 through the injection liquid hose 4. The molding liquid fills the combined cavity. The molding liquid in the combined cavity is used for injection molding of the insulating end plate so that the insulating end plate body 19 is formed in the lower cavity 60, the annular fin portion 190 is formed in the several fin gaps 62, and the gap between the core protrusion 101 and the upper cavity 100 is used for the forming of the rotor protrusion portion 191.

[0046] During the cooling and shaping process of the liquid material entering the combined cavity, coolant is introduced into the cooling pipe 9 through the coolant hose 12. The coolant then enters the hollow structure cavity of the support block 8 through the cooling pipe 9, pre-cooling the insulating end plate body 19 of the lower cavity 60. Several fin gaps 62 are opened on the heat insulation ring 61 of the heat-conducting module 6, so that the annular fin portion 190 within the several fin gaps 62 is in a high-temperature state. As the insulating end body cools and shapes, the annular fin portion 190 shrinks towards the connection part of the insulating end body, which helps to strengthen the shrinkage between the annular fin portion 190 and the insulating end body. The connection strength is improved, and the shrinkage connection between the annular fin portion 190 and the insulating end body weakens the adhesion between them and the heat-conducting module 6 due to the shrinkage connection, thereby solving the problem of tearing damage to the annular fin portion 190 caused by excessive adhesion during demolding. When the upper mold base 1 is cooling, the outer wall surface of the rotor protrusion portion 191 contacts the cavity wall of the upper cavity 100, and the inner wall surface contacts the core protrusion portion 101. As the upper mold base 1 and the core portion cool, the inner and outer wall surfaces of the rotor protrusion portion 191 cool and shrink, thereby facilitating demolding separation of the upper mold base 1 and the rotor protrusion portion 191.

[0047] In this embodiment, as Figure 3 As shown, the gap between the bearing block 7 and the wall of the lower narrow through hole 51 is set so that multiple upper support rods 10 can be installed within the gap formed by the bearing block 7 and the lower narrow through hole 51, so that the multiple upper support rods 10 can rotate within the lower narrow through hole 51.

[0048] Furthermore, such as Figure 1 and Figure 7As shown, multiple upper support rods 10 are evenly distributed between the support block 7 and the wall of the lower narrow through hole 51. The top of the upper support rod 10 is fixedly connected to the heat conduction module 6, and the bottom end of the upper support rod 10 extends downward into the lower narrow through hole 51, and the bottom end is fixedly connected to the rotating mechanism. The rotating mechanism facilitates the rotation of the multiple upper support rods 10, so that the heat conduction module 6 can be rotated for demolding. When the bottom of the insulating end plate body 19 in the lower cavity 60 is cooled and shaped, the rotating mechanism drives the heat conduction module 6 to rotate, so that the bottom of the rotating insulating end plate body 19 shrinks and separates from the support block 8, thereby... The adhesive force between the support block 8 and the bottom of the insulating end plate body 19 is reduced. At the same time, the rotating annular fin portion 190 and the shrinkage gap of the heat-conducting module 6 cause vibration, which can reduce the adhesive force between the annular fin portion 190 and the heat insulation ring 61. In addition, when the rotating mechanism drives the heat-conducting module 6 to rotate, several fin gaps 62 fix the annular fin portion 190 so that the formed insulating end plate can be demolded with the rotation of the heat-conducting module 6. During the rotation, the support block 8 lifts the insulating end plate upward, which makes it easier to obtain a well-formed insulating end plate for demolding while rotating and lifting, which is convenient to operate.

[0049] Furthermore, such as Figure 7 As shown, the rotating mechanism includes a servo motor 14, a driving pinion 15, a driven gear 16, and a ring plate 18. The output end of the servo motor 14 is sleeved with the driving pinion 15, which meshes with the driven gear 16. The ring plate 18 is fixedly connected to the side of the driven gear 16, and the ring plate 18 is perpendicularly connected to the upper support rod 10. The servo motor 14 drives the driving pinion 15 to rotate, and the driving pinion 15 and the driven gear 16 mesh with each other to reduce speed and drive the rotation of the insulating end plate in the heat conduction module 6 and stabilize its lifting and demolding.

[0050] In this embodiment, as Figure 8 As shown, the lifting mechanism is a cylinder 13. The extension end of the cylinder 13 is fixedly connected to the cooling pipe 9, so that the cooling pipe 9 can be lifted by the cylinder 13.

[0051] In this embodiment, as Figure 1 As shown, the two sides of the upper mold base 1 slide against the demolding frame 2, and the top of the demolding frame 2 is fixedly installed with a hydraulic cylinder 3. The extended end of the hydraulic cylinder 3 is fixedly connected to the upper mold base 1. The hydraulic cylinder facilitates the upper mold base 1 to perform mold closing injection or demolding.

[0052] In this embodiment, as Figure 1 As shown, the demolding frame 2 is fixedly connected to both sides of the lower mold base 5 to keep the lower mold base 5 fixedly installed.

[0053] In this embodiment, as Figure 1 As shown, the bottom wall of the bearing block 7 is fixedly connected to the demolding frame 2 by multiple lower support rods 17, which facilitates the support and fixation of the bearing block 7 by the multiple lower support rods 17.

[0054] In this embodiment, as Figure 5 As shown, a sealing gasket 11 is fitted on the side of the support block 8. The sealing gasket 11 is clamped and installed in the gap between the support block 8 and the heat conduction module 6. During the injection molding process of the lower mold base 5 and the upper mold base 1, in order to prevent the injection liquid from overflowing from the gap between the heat conduction module 6 and the support block 8, it is convenient to seal it through the sealing gasket 11.

[0055] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A rapid demolding device for insulating end plates, characterized in that, include: The upper mold base (1) has multiple upper cavities (100), and a core protrusion (101) is provided in the upper cavity (100). The core protrusion (101) and the cavity wall of the upper cavity (100) are separated by a gap. The upper mold base (1) has an injection liquid channel (102) that communicates with the multiple upper cavities (100). The injection liquid channel (102) extends outward from the opening end of the upper mold base (1) and connects to the injection liquid hose (4). The lower mold base (5) is located directly below the upper mold base (1), and the lower mold base (5) has multiple stepped through holes; A heat-conducting module (6) is inserted into the upper flared through hole (50) included in the stepped through hole. A lower cavity (60) is provided at the middle position of the heat-conducting module (6). A heat insulation ring (61) is provided between the heat-conducting module (6) and the lower cavity (60), and the heat insulation ring (61) is integrally connected with the heat-conducting module (6). A plurality of fin slots (62) located in the circumferential direction of the lower cavity (60) are opened on the heat insulation ring (61). The support block (7) is disposed in the lower narrow through hole (51) included in the stepped through hole and abuts against the bottom end face of the heat conduction module (6); A support block (8) is inserted and installed on the bottom wall of the heat-conducting module (6). A cooling pipe (9) is fixedly connected to the bottom wall of the support block (8). A hollow structure cavity is provided on the support block (8). The hollow structure cavity is connected to the cavity of the cooling pipe (9). The cooling pipe (9) passes through the support block (7) and extends downward. A coolant hose (12) is connected to the downward extending end of the cooling pipe (9). The lifting mechanism is fixedly connected to the downwardly extending bottom end of the cooling pipe (9); The lower cavity (60) provided on the heat-conducting module (6) is used for injection molding of the insulating end plate body (19). Several fin gaps (62) provided in the circumferential direction of the lower cavity (60) are used for injection molding of the annular fin part (190). The support block (8) with a hollow inner cavity facilitates cooling from the bottom of the injection-molded insulating end plate body (19) and then diffuses the cooling effect to the heat-conducting module (6) and the upper mold base (1).

2. The quick demolding device for insulating end plates according to claim 1, characterized in that, The gap between the bearing block (7) and the wall of the lower narrow through hole (51) is provided.

3. The rapid demolding device for insulating end plates according to claim 2, characterized in that, Multiple upper support rods (10) are evenly distributed between the bearing block (7) and the wall of the lower narrow through hole (51). The top end of the upper support rod (10) is fixedly connected to the heat conduction module (6), and the bottom end of the upper support rod (10) extends downward out of the lower narrow through hole (51) and is fixedly connected to the rotating mechanism.

4. The quick demolding device for insulating end plates according to claim 3, characterized in that, The rotating mechanism includes a servo motor (14), a driving pinion (15), a driven gear (16), and a ring plate (18). The output end of the servo motor (14) is sleeved with the driving pinion (15). The driving pinion (15) meshes with and drives the driven gear (16). The ring plate (18) is fixedly connected to the side of the driven gear (16). The ring plate (18) is perpendicularly connected to the upper support rod (10).

5. The quick demolding device for insulating end plates according to claim 1, characterized in that, The lifting mechanism is a cylinder (13), and the telescopic end of the cylinder (13) is fixedly connected to a cooling pipe (9).

6. The quick demolding device for insulating end plates according to claim 1, characterized in that, The two sides of the upper mold base (1) slide against the demolding frame (2), and the top of the demolding frame (2) is fixedly installed with a hydraulic cylinder (3), and the extended end of the hydraulic cylinder (3) is fixedly connected to the upper mold base (1).

7. The rapid demolding device for insulating end plates according to claim 1, characterized in that, The demolding frame (2) is fixedly connected to both sides of the lower mold base (5).

8. The quick demolding device for insulating end plates according to claim 1, characterized in that, The bottom wall of the bearing block (7) is fixedly connected to the demolding frame (2) by multiple lower support rods (17).

9. The rapid demolding device for insulating end plates according to claim 1, characterized in that, A sealing gasket (11) is fitted on the side of the support block (8), and the sealing gasket (11) is clamped and installed in the gap between the support block (8) and the heat conduction module (6).

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