Integrated electronic water pump shell injection mold stripping structure

Abstract

The utility model is suitable for the technical field of injection molds, and particularly relates to an integrated electronic water pump shell injection mold stripping structure which comprises a plate B, a plate A is arranged on the surface of the plate B, a stripping plate is arranged on the surface of the plate A, a hot runner plate is arranged on the surface of the stripping plate, and an injection head is arranged in the hot runner plate. A plurality of T-shaped pull rods are connected into the stripper plate, and a plurality of first T-shaped grooves are formed in the surface of the A plate. According to the utility model, by adopting a double-stage stripping structure and combining the matching of the T-shaped pull rod and the T-shaped plug screw, the step-by-step separation of the cold runner and the crochet hook is realized, and the problem that a cold material in a hot runner system in a point glue feeding three-plate mold structure is difficult to automatically fall off is effectively solved. The stripping time sequence is controlled in a structure linkage mode, it is ensured that the cold runner can be smoothly separated from the front mold insert and return under the action of gravity, and the problem of production interruption caused by cold material retention or demolding failure is solved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically an integrated electronic water pump housing injection mold stripping structure. Background Technology

[0002] In new energy thermal management systems, integrated electronic water pump housings typically feature complex structures, highly uneven wall thickness distribution, and the need for embedded electrical components, placing higher demands on injection mold design and process control. While hot runner systems are widely used to improve injection molding efficiency and product quality, they are generally designed for two-plate molds and cannot be directly applied to the multi-point injection molding requirements of three-plate molds, particularly posing significant challenges for cold runner demolding. Traditional ejection mechanisms often rely on a single ejection mechanism, which frequently suffers from incomplete ejection or product damage due to unstable connections or improper timing between the ejector pin and the cold runner, severely impacting injection molding efficiency and yield.

[0003] Therefore, there is an urgent need for an injection mold structure that can reliably achieve sequential unloading of cold runners in a three-plate mold structure, so as to improve the adaptability of hot runner systems in complex injection molding scenarios and meet the high-quality and high-efficiency molding requirements of complex structural parts such as electronic water pumps. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide an integrated electronic water pump housing injection mold stripping structure, which aims to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An integrated electronic water pump housing injection mold stripping structure includes a B plate, an A plate on the surface of the B plate, a stripping plate on the surface of the A plate, a hot runner plate on the surface of the stripping plate, an injection head inside the hot runner plate, and several T-shaped tie rods connected inside the stripping plate. Several first T-shaped grooves are formed on the surface of the A plate, and the T-shaped tie rods pass through the interior of the first T-shaped grooves.

[0007] The surface of the stripping plate is provided with a plurality of second T-shaped grooves, and a T-shaped plug screw is provided inside the second T-shaped groove. One end of the T-shaped plug screw is fixedly connected to the lower surface of the hot runner plate.

[0008] The surface of plate B is provided with a front mold core, and the interior of the front mold core is provided with a front mold insert. The surface of plate A is provided with a cold runner insert, and the interior of the cold runner insert is provided with a number of hooks. One end of the hooks is fixedly connected to the injection head. The interior of the front mold insert is provided with a cold runner, and the hooks are detachably connected to the cold runner.

[0009] Furthermore, a connecting block is provided at the end of the hook away from the injection head, and several connecting slots are provided on the surface of the cold runner, and the hook is detachably connected by the cooperation of the connecting block and the connecting slots.

[0010] Furthermore, the lower surface of the hot runner plate is provided with several connecting grooves, and one end of the T-shaped plug screw is fixedly connected to the inside of the connecting groove.

[0011] Furthermore, an injection molding machine is installed inside the hot runner plate, and the injection head is mounted on the injection molding machine. A positioning ring is provided on the top of the injection molding machine.

[0012] Furthermore, several opening and closing devices are provided between plate B and plate A.

[0013] The integrated electronic water pump housing injection mold stripping structure provided by this utility model has the following beneficial effects:

[0014] This invention employs a two-stage stripping structure, combined with the cooperation of a T-shaped tie rod and a T-shaped plug screw, to achieve step-by-step separation of the cold runner and the hook pin. This effectively solves the problem of cold material failing to automatically detach in hot runner systems within point-injection three-plate mold structures. By controlling the stripping sequence through structural linkage, it ensures that the cold runner can smoothly detach from the front mold insert and return to its original position, avoiding production interruptions caused by cold material retention or failed demolding. This structure is suitable for integrated electronic water pump housings with demanding molding requirements, improving the stability and consistency of injection molding, expanding the application range of hot runner technology in complex mold structures, and possessing good process adaptability and engineering promotion value. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the material removal structure of an integrated electronic water pump housing injection mold.

[0016] Figure 2 This is a schematic diagram of the overhead structure of the hot runner plate in the ejector structure of an integrated electronic water pump housing injection mold.

[0017] Figure 3 This is a schematic diagram of a stripper plate and plate A in a stripper structure of an integrated electronic water pump housing injection mold, where the stripper plate and plate A are in a separated state.

[0018] Figure 4 This is a schematic diagram of the structure of an integrated electronic water pump housing injection mold stripping structure in which plate A and plate B are in a separated state.

[0019] Figure 5 This is a partial cross-sectional view of plate B, plate A, stripper plate and T-shaped tie rod in the stripping structure of an integrated electronic water pump housing injection mold.

[0020] Figure 6 This is a partial cross-sectional view of plate B, plate A, stripper plate and T-shaped plug screw in the stripping structure of an integrated electronic water pump housing injection mold.

[0021] Figure 7 This is a schematic diagram of the cold runner insert, hook, cold runner, and front mold insert in the stripping structure of an integrated electronic water pump housing injection mold.

[0022] Figure 8 This is a schematic diagram of the cold runner and hook pin in the stripping structure of an integrated electronic water pump housing injection mold, in a disassembled state.

[0023] In the diagram: 1. Base; 2. B plate; 3. A plate; 4. Stripper plate; 5. T-shaped plug screw; 6. Hot runner plate; 7. Locating ring; 8. Connecting groove; 9. Injection head; 10. T-shaped tie rod; 11. Cold runner insert; 12. Front mold insert; 13. Front mold core; 14. Hook pin; 15. Cold runner; 16. Connecting block; 17. Connecting slot. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] like Figures 1-8 As shown in the figure, the present invention provides an integrated electronic water pump housing injection mold stripping structure, including a base 1, and a B plate 2 is provided on the upper surface of the base 1, an A plate 3 is provided on the surface of the B plate 2, and a plurality of opening and closing devices are provided between the B plate 2 and the A plate 3, preferably four, and distributed at the four corners.

[0027] A stripper plate 4 is provided on the surface of plate A 3, and a hot runner plate 6 is provided on the surface of stripper plate 4. An injection head 9 is provided inside the hot runner plate 6. Several T-shaped tie rods 10 are connected inside stripper plate 4, preferably four. Several first T-shaped grooves are opened on the surface of plate A 3, and the T-shaped tie rods 10 are provided through the inside of the first T-shaped grooves.

[0028] The surface of the stripper plate 4 is provided with several second T-shaped grooves, and a T-shaped plug screw 5 is provided inside the second T-shaped groove. One end of the T-shaped plug screw 5 is fixedly connected to the lower surface of the hot runner plate 6. The lower surface of the hot runner plate 6 is provided with several connecting grooves 8, preferably four, and one end of the T-shaped plug screw 5 is fixedly connected inside the connecting groove 8.

[0029] The surface of plate B2 is provided with a front mold core 13, and the interior of the front mold core 13 is provided with a front mold insert 12. The surface of plate A3 is provided with a cold runner insert 11, and the interior of the cold runner insert 11 is provided with several hooks 14. One end of the hooks 14 is fixedly connected to the injection head 9. The interior of the front mold insert 12 is provided with a cold runner 15, and the hooks 14 are detachably connected to the cold runner 15. The end of the hook 14 away from the injection head 9 is provided with a connecting block 16. The surface of the cold runner 15 is provided with several connecting slots 17, and the hooks 14 are detachably connected through the cooperation of the connecting block 16 and the connecting slots 17.

[0030] In one embodiment of this utility model, during actual operation, an opening / closing device is provided between plate A 3 and plate B 2, causing them to separate synchronously during the mold opening process. During this process, the stripper plate 4 moves in coordination with plate A 3 and the T-shaped tie rod 10, thereby driving the cold runner insert 11. The hook 14 pulls the cold runner 15, causing it to gradually disengage from the front mold insert 12. When the protruding head of the T-shaped tie rod 10 moves to the narrow section of the first T-groove, the cold runner 15 disengages from the front mold insert 12; this process constitutes the first stripping action.

[0031] After the first stage of stripping is completed, plate A3 remains stationary, while stripping plate 4 continues to move upward due to the engagement of T-shaped plug screw 5 with the second T-shaped groove. Simultaneously, injection head 9 drives hook 14, which is fixedly connected to it, to continue moving upward. At this time, the downward movement of cold runner 15 is restricted by the lower part of cold runner insert 11 and remains stationary until the protrusion of T-shaped plug screw 5 is engaged in the narrow area of ​​the second T-shaped groove. At this point, connecting block 16 disengages from connecting groove 17, realizing the separation of hook 14 from cold runner 15. This process is the second stage of stripping.

[0032] After the cold runner 15 detaches from the hook 14, it returns to the interior of the front mold insert 12 under its own gravity, completing the return and preparing for the next injection cycle.

[0033] This structure significantly improves the demolding efficiency and stability of cold runners by setting up a two-stage demolding action, avoiding production interruptions caused by demolding failures in traditional molds. Simultaneously, this structure is compatible with hot runner systems and point-injection three-plate mold designs, effectively overcoming the limitation of traditional hot runner molds being unsuitable for three-plate molds, and expanding the application boundaries of hot runner technology in complex molded parts.

[0034] This structure is particularly suitable for injection molding of integrated electronic water pump housings, where the wall thickness is uneven and stators and terminals need to be embedded, placing extremely high demands on the mold stripping structure and process control. The introduction of this structure not only improves the consistency and yield of injection-molded products but also expands the adjustment range of the injection molding process, demonstrating significant engineering application prospects for the efficient and stable manufacturing of electronic water pumps in the thermal management systems of new energy vehicles.

[0035] In this embodiment, an injection molding machine is installed inside the hot runner plate 6, and the injection head 9 is mounted on the injection molding machine. A positioning ring 7 is provided on the top of the injection molding machine. The injection head 9 is directly mounted on the injection molding machine and is used to distribute and inject the high-temperature molten material. The positioning ring 7 on the top of the injection molding machine is used for precise installation and positioning of the injection molding system.

[0036] This design has significant structural and technological implications. On the one hand, by embedding the injection molding machine inside the hot runner plate 6, the flow path of the molten plastic can be significantly shortened, heat loss can be reduced, injection efficiency and molding stability can be improved, and it can help meet the high requirements for temperature control and flow balance of complex products with uneven wall thickness, such as integrated electronic water pump housings.

[0037] On the other hand, the positioning ring 7 serves as a precise docking element between the injection molding machine and the hot runner plate 6, ensuring that the injection head 9 will not shift axially or radially during high-pressure injection, thereby improving structural stability and mold life. It also facilitates mold assembly, disassembly, and subsequent maintenance, and has strong engineering adaptability and long-term reliability.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated electronic water pump housing injection mold stripping structure, comprising a B plate (2), an A plate (3) disposed on the surface of the B plate (2), a stripping plate (4) disposed on the surface of the A plate (3), and a hot runner plate (6) disposed on the surface of the stripping plate (4), wherein an injection head (9) is disposed inside the hot runner plate (6), characterized in that, The stripping plate (4) is internally connected with several T-shaped tie rods (10), and the surface of the A plate (3) is provided with several first T-shaped grooves, and the T-shaped tie rods (10) are inserted through the inside of the first T-shaped grooves; The surface of the stripping plate (4) is provided with several second T-shaped grooves, and a T-shaped plug screw (5) is provided inside the second T-shaped groove. One end of the T-shaped plug screw (5) is fixedly connected to the lower surface of the hot runner plate (6). The surface of plate B (2) is provided with a front mold core (13), and the interior of the front mold core (13) is provided with a front mold insert (12). The surface of plate A (3) is provided with a cold runner insert (11), and a plurality of hooks (14) are provided through the interior of the cold runner insert (11). One end of the hooks (14) is fixedly connected to the injection head (9). The interior of the front mold insert (12) is provided with a cold runner (15), and the hooks (14) and the cold runner (15) are detachably connected.

2. The stripper structure of an integrated electronic water pump housing injection mold according to claim 1, wherein The hook (14) is provided with a connecting block (16) at one end away from the injection head (9), and the surface of the cold runner (15) is provided with a plurality of connecting slots (17), and the hook (14) is detachably connected by the cooperation of the connecting block (16) and the connecting slots (17).

3. The stripping structure of an integrated injection mold for an electronic water pump housing according to claim 1, wherein The lower surface of the hot runner plate (6) is provided with several connecting grooves (8), and one end of the T-shaped plug screw (5) is fixedly connected to the inside of the connecting groove (8).

4. The stripping structure of an integrated injection mold for an electronic water pump housing according to claim 1, wherein An injection molding machine is installed inside the hot runner plate (6), and an injection head (9) is installed on the injection molding machine. A positioning ring (7) is installed on the top of the injection molding machine.

5. The stripping structure of an integrated injection mold for an electronic water pump housing according to claim 1, wherein Several opening and closing devices are provided between plate B (2) and plate A (3).

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