Die for motor box

Abstract

The utility model discloses a mould for a motor case, which comprises an upper mould and a lower mould, a top plate component is arranged above the upper mould, a mould frame is arranged between the upper mould and the lower mould, a mould core is arranged on the mould frame, a cavity is arranged in the mould core, the mould frame comprises a support plate, a movable groove is arranged in the support plate, and the movable groove is arranged in the movable groove. A movable groove is formed in the support plate, an inclined support is arranged in the movable groove in a penetrating manner, a first inclined surface is arranged on the inclined support, a second inclined surface matched with the movable groove is arranged on the movable groove, a support rod is arranged on the support plate, an inclined mold core is arranged at one end, far away from the support plate, of the support rod, a guide groove is formed in the mold core, and the mold core is arranged in the guide groove in a penetrating manner. A third inclined plane is arranged on the mold core, a fourth inclined plane matched with the third inclined plane is arranged on the supporting rod, and the inclined support drives the supporting plate to retreat backwards to drive the mold core to be demolded towards the inclined upper part. According to the utility model, the mold core can be demoulded along the inclined upper part of a preset path, so that the demoulding resistance is effectively reduced, a plastic part is prevented from being deformed or damaged in the demoulding process, and the demoulding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to a mold for a motor box. Background Art

[0002] The mold for a motor box refers to an injection mold, which is specifically used for producing a motor housing or a motor box body. This mold has a complex design and requires precision manufacturing to ensure that the produced motor box body has high precision and high quality.

[0003] Both sides of the existing motor box have two inclined connecting ears, so inclined cores are required. Since the cores are inclined, an oil cylinder needs to provide additional demolding force to eject the plastic part from the cores during the demolding process. If the structural design is improper, the plastic part may be deformed or damaged. At the same time, the inclined cores will generate friction with the plastic part during demolding, especially when the contact area between the core surface and the plastic part is large. This will lead to increased wear of the cores and the mold, affecting the service life of the mold and the quality of the finished product. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a mold for a motor box, which can make the core demold obliquely upward along a predetermined path, effectively reduce the demolding resistance, avoid deformation or damage of the plastic part during the demolding process, and improve the demolding efficiency.

[0005] To solve the above technical problem, a mold for a motor box of the utility model includes an upper mold and a lower mold. A top plate assembly is provided above the upper mold. A mold base is provided between the upper mold and the lower mold. A mold core is provided on the mold base. A cavity is provided in the mold core. The mold base includes a support plate. An activity groove is provided in the support plate. An inclined support is inserted into the activity groove. A first inclined surface is provided on the inclined support. A second inclined surface is provided on the activity groove and is matched with the first inclined surface. A support rod is provided on the support plate. An inclined core is provided at one end of the support rod away from the support plate. A guiding groove is provided in the mold core. The core is inserted into the guiding groove. A third inclined surface is provided on the core. A fourth inclined surface is provided on the support rod and is matched with the third inclined surface. The inclined support drives the support plate to withdraw backward, driving the core to demold obliquely upward.

[0006] The inclined support includes a limiting part and an inclined surface part. The inclined surface part is in limiting cooperation with the activity groove. The first inclined surface is provided on the inclined surface part.

[0007] A T-shaped first limiting block is provided on the support rod, and a corresponding first limiting groove is provided on the support plate.

[0008] A T-shaped second limiting block is provided at the top of the core. The third inclined surface is provided on the second limiting block. A corresponding second limiting groove is provided on the support rod. The fourth inclined surface is provided on the second limiting groove.

[0009] The mold core is provided with ventilation holes, and the surface of the mold core is provided with ventilation grooves, and the ventilation grooves are connected to the ventilation holes.

[0010] The top plate assembly is provided with ventilation openings, and the ventilation openings are arranged corresponding to the ventilation grooves.

[0011] The top plate assembly includes an upper top plate and a lower top plate. The limiting portion is arranged in the lower top plate in a penetrating manner, and the inclined support is fixed on the upper top plate.

[0012] The upper mold is provided with a sliding groove, and both ends of the support plate are provided with limiting protrusions, and the support plate can move along the sliding groove.

[0013] There are at least 3 ventilation holes.

[0014] Multiple sets of telescopic sleeves are arranged in the lower top plate, the upper mold and the lower mold. A telescopic rod is arranged in the telescopic sleeve, and the upper end of the telescopic rod is fixed on the upper top plate.

[0015] When the utility model is used, after injection molding is completed, the molten plastic fills the mold cavity and cools and solidifies in the mold. After the cooling time ends, the top plate assembly starts the demolding action. The upper top plate is driven by a cylinder to drive the inclined support to move upward. Through the cooperation of the first inclined surface and the second inclined surface, the support plate retracts backward. The cooperation of the sliding groove and the limiting protrusions ensures that the movement path of the support plate is fixed and prevents deviation. As the support plate moves, the support rod also moves backward. One end of the support rod away from the support plate is connected with an inclined core. As the support rod moves, the T-shaped second limiting block at the top of the core slides in the second limiting groove. The third inclined surface and the fourth inclined surface cooperate to make the core move obliquely upward along a predetermined path. Under the combined action of the inclined support, the support plate and the support rod, the core is smoothly separated from the plastic part, and the plastic part is taken out of the mold. During the whole process, the ventilation holes and the ventilation grooves discharge the air in the mold, further ensuring smooth demolding. After the plastic part is demolded, the top plate assembly, the inclined support, the support plate and the support rod are reset to prepare for the next injection molding cycle.

[0016] The beneficial effects brought by the utility model are as follows:

[0017] (1) The utility model can make the core demold obliquely upward along a predetermined path, effectively reducing the demolding resistance, avoiding deformation or damage of the plastic part during the demolding process, and improving the demolding efficiency.

[0018] (2) The oil cylinder accessories are omitted, simplifying the production and assembly processes, and can significantly reduce the overall manufacturing and maintenance costs of the mold.

[0019] The utility model ensures that the movement paths of all components are accurate during the demolding process through the limiting structure, guaranteeing the stability and reliability of the demolding process. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural view of the present utility model.

[0021] Figure 2 is a schematic structural view of the present utility model with the upper top plate, lower top plate and upper mold removed.

[0022] Figure 3 is a schematic structural view of the mold base of the present utility model.

[0023] Figure 4 is a schematic structural view of the inclined support of the present utility model.

[0024] Figure 5 is a schematic structural view of the support rod of the present utility model.

[0025] Figure 6 is a schematic structural view of the core of the present utility model.

[0026] Figure 7 is a cross-sectional view of the mold core of the present utility model.

[0027] In the figure: 1. Upper mold; 2. Lower mold; 3. Mold base; 4. Mold core; 5. Support plate; 6. Movable groove; 7. Inclined support; 8. First inclined surface; 9. Second inclined surface; 10. Support rod; 11. Core; 12. Third inclined surface; 13. Fourth inclined surface; 14. Limiting part; 15. Inclined surface part; 16. First limiting block; 17. First limiting groove; 18. Second limiting block; 19. Second limiting groove; 20. Ventilation hole; 21. Ventilation groove; 22. Ventilation port; 23. Upper top plate; 24. Lower top plate; 25. Slide groove; 26. Limiting protrusion; 27. Telescopic sleeve; 28. Telescopic rod; 29. Guide groove. Detailed Description of the Preferred Embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] According to Figures 1 to 7As shown in the figure, a mold for a motor box of the present utility model includes an upper mold 1 and a lower mold 2. There is a top plate assembly above the upper mold 1. A mold base 3 is provided between the upper mold 1 and the lower mold 2. A mold core 4 is provided on the mold base 3, and a cavity is provided inside the mold core 4. The mold base 3 includes a support plate 5. An activity groove 6 is provided inside the support plate 5. An inclined support 7 is inserted into the activity groove 6. The inclined support 7 includes a limit portion 14 and an inclined surface portion 15. The inclined surface portion 15 is in limit cooperation with the activity groove 6. A first inclined surface 8 is provided on the inclined surface portion 15, and a second inclined surface 9 that cooperates with it is provided on the activity groove 6. A support rod 10 is provided on the support plate 5. An inclined core 11 is provided at one end of the support rod 10 away from the support plate 5. A guiding groove 29 is provided inside the mold core 4. The core 11 is inserted into the guiding groove 29. A third inclined surface 12 is provided on the core 11, and a fourth inclined surface 13 that cooperates with it is provided on the support rod 10. When the inclined support 7 moves upward, the support plate 5 moves backward under the guidance of the first inclined surface 8 and the second inclined surface 9. The movement of the support plate 5 drives the support rod 10 to move backward along a predetermined path. At the same time, the core 11 moves upward under the guidance of the third inclined surface 12 and the fourth inclined surface 13, ensuring that the core 11 moves smoothly during the demolding process, avoiding the possible jamming phenomenon during the demolding process, effectively reducing the demolding resistance, protecting the quality of the plastic part, and being applicable to the manufacture of complex structures such as motor boxes.

[0030] A T-shaped first limit block 16 is provided on the support rod 10, and a corresponding first limit groove 17 is provided on the support plate 5. The setting of the first limit block 16 and the first limit groove 17 can ensure that the support rod 10 remains stable during the movement and will not deviate, thus ensuring that the demolding path of the core 11 is accurate. A T-shaped second limit block 18 is provided at the top of the core 11. The third inclined surface 12 is provided on the second limit block 18. A corresponding second limit groove 19 is provided on the support rod 10, and the fourth inclined surface 13 is provided on the second limit groove 19. The cooperation between the second limit block 18 and the second limit groove 19 enables the core 11 to move precisely along a predetermined path during the demolding process. At the same time, the cooperation between the third inclined surface 12 and the fourth inclined surface 13 further ensures the stability of the core 11 during the demolding process.

[0031] Ventilation holes 20 are provided inside the mold core 4. Ventilation grooves 21 are provided on the surface of the mold core 4. The ventilation grooves 21 are connected to the ventilation holes 20. A ventilation port 22 is provided on the top plate assembly, and the ventilation port 22 is provided corresponding to the ventilation grooves 21. There are at least three ventilation holes 20. This design ensures that the air inside the mold can be smoothly discharged during the injection molding process. The connection between the ventilation grooves 21 and the ventilation holes 20 ensures the smooth flow of air, enabling the gas inside the mold to be quickly discharged. The ventilation port 22 on the top plate assembly corresponds to the ventilation grooves 21, further optimizing the effect of the exhaust system and ensuring the smooth progress of the production process.

[0032] A chute 25 is provided on the upper mold 1. Limit protrusions 26 are provided at both ends of the support plate 5. The support plate 5 can move along the chute 25. The setting of the chute 25 enables the support plate 5 to slide smoothly within the upper mold 1. The limit protrusions 26 ensure that the movement path of the support plate 5 is fixed, thereby ensuring the precise movement trajectory of the core 11, reducing errors, and improving the demolding efficiency.

[0033] The top plate assembly includes an upper top plate 23 and a lower top plate 24. The limiting portion 14 is inserted into the lower top plate 24. The inclined support 7 is fixed on the upper top plate 23. The upper top plate 23 is used to drive the inclined support 7 to move upward. The limiting portion 14 being inserted into the lower top plate 24 ensures that the inclined support 7 can remain stable during operation and is not easily offset, thereby improving the stability of the entire mold.

[0034] Multiple sets of telescopic sleeves 27 are provided in the lower top plate 24, the upper mold 1, and the lower mold 2. A telescopic rod 28 is provided inside the telescopic sleeve 27. The upper end of the telescopic rod 28 is fixed on the upper top plate 23, enabling the upper mold 1 and the lower mold 2 to be precisely aligned during the injection molding and demolding processes, improving the efficiency of the mold and the quality of the finished product.

[0035] When the present utility model is in use, after the injection molding is completed, the molten plastic fills the mold cavity and cools and solidifies inside the mold. After the cooling time ends, the top plate assembly starts the demolding action. The upper top plate 23 is driven by a cylinder to drive the inclined support 7 to move upward. Through the cooperation of the first inclined surface 8 and the second inclined surface 9, the support plate 5 retracts backward. The cooperation of the chute 25 and the limit protrusions 26 ensures that the movement path of the support plate 5 is fixed and prevents deviation. As the support plate 5 moves, the support rod 10 also moves backward. One end of the support rod 10 away from the support plate 5 is connected to an inclined core 11. As the support rod 10 moves, the T-shaped second limit block 18 at the top of the core 11 slides within the second limit groove 19. The cooperation of the third inclined surface 12 and the fourth inclined surface 13 causes the core 11 to move obliquely upward along a predetermined path. Under the combined action of the inclined support 7, the support plate 5, and the support rod 10, the core 11 is smoothly separated from the plastic part, enabling the plastic part to be removed from the mold. During the entire process, the ventilation holes 20 and the ventilation grooves 21 discharge the air inside the mold, further ensuring smooth demolding. After the plastic part is demolded, the top plate assembly, the inclined support 7, the support plate 5, and the support rod 10 return to their original positions to prepare for the next injection molding cycle.

[0036] The beneficial effects brought by the present utility model are:

[0037] (1) The present utility model can enable the core to demold obliquely upward along a predetermined path, effectively reducing the demolding resistance, avoiding deformation or damage of the plastic part during the demolding process, and improving the demolding efficiency.

[0038] (2) The oil cylinder fittings are omitted, simplifying the production and assembly processes, and can significantly reduce the overall manufacturing and maintenance costs of the mold.

[0039] (3) Through the limiting structure of the present utility model, the movement paths of all components during the demolding process are ensured to be accurate, guaranteeing the stability and reliability of the demolding process.

[0040] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made according to the structures, features, and principles described in the scope of the patent application of the present utility model are included in the scope of the patent application of the present utility model.

Claims

1. A mold for a motor box, comprising an upper mold and a lower mold, a top plate assembly is provided above the upper mold, a mold frame is provided between the upper mold and the lower mold, a mold core is provided on the mold frame, and a cavity is provided in the mold core, characterized in that: The mold frame includes a support plate, a movable groove is provided in the support plate, an inclined support is passed through the movable groove, a first inclined surface is provided on the inclined support, and a second inclined surface matching therewith is provided on the movable groove. A support rod is provided on the support plate, and an inclined core is provided at one end of the support rod away from the support plate. A guide groove is provided in the mold core, and the core is passed through the guide groove. A third inclined surface is provided on the core, and a fourth inclined surface matching therewith is provided on the support rod. The inclined support drives the support plate to withdraw backwards, thereby driving the core to demold obliquely upwards.

2. A mold for a motor box according to claim 1, characterized in that: The inclined support includes a limiting portion and an inclined surface portion, the inclined surface portion is limitedly matched with the movable groove, and the first inclined surface is arranged on the inclined surface portion.

3. A mold for a motor box according to claim 1, characterized in that: The support rod is provided with a T-shaped first limiting block, and the support plate is provided with a corresponding first limiting groove.

4. A mold for a motor box according to claim 1, characterized in that: A T-shaped second limiting block is provided on the top of the core, the third inclined surface is provided on the second limiting block, a corresponding second limiting groove is provided on the support rod, and the fourth inclined surface is provided on the second limiting groove.

5. The mold for a motor box according to claim 1, characterized in that: A ventilation hole is arranged in the mold core, and a ventilation groove is arranged on the surface of the mold core, and the ventilation groove is connected to the ventilation hole.

6. A mold for a motor box according to claim 5, characterized in that: The top plate assembly is provided with a vent, and the vent is arranged corresponding to the vent slot.

7. A mold for a motor box according to claim 2, characterized in that: The top plate assembly comprises an upper top plate and a lower top plate, the limiting portion is arranged inside the lower top plate, and the oblique support is fixed on the upper top plate.

8. The mold for a motor box according to claim 1, characterized in that: The upper die is provided with a slide groove, and both ends of the support plate are provided with limiting protrusions, and the support plate can move along the slide groove.

9. The mold for a motor box according to claim 5, characterized in that: The number of the ventilation holes is at least three.

10. The mold for a motor box according to claim 7, characterized in that: A plurality of telescopic sleeves are arranged in the lower top plate, the upper die and the lower die, a telescopic rod is arranged in the telescopic sleeve, and the upper end of the telescopic rod is fixed on the upper top plate.

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