Heat-conducting silicone grease injection molding tool and device for machining electronic water pump heat dissipation shell

Abstract

The invention relates to the technical field of electronic water pump production and machining, in particular to a heat-conducting silicone grease injection molding tool and device for electronic water pump heat dissipation shell machining. The tool comprises a tool frame body, and the tool frame body is composed of two first positioning guide rods and a second positioning guide rod which are distributed in the circumferential direction; the two first positioning guide rods are higher than the second positioning guide rod, the three positioning guide rods are fixedly connected together through a lateral connecting plate, a connecting frame is installed on the two first positioning guide rods in a sliding mode, a connecting mechanism is arranged at the bottom of the connecting frame, a detachable injection mold body is arranged on the connecting mechanism, and the two first positioning guide rods and the two second positioning guide rods are fixedly connected together. And the injection mold body is of a disc-shaped structure. The shell is positioned through the tool frame body, then the injection mold body is driven by the connecting frame to abut against the inner side of the shell to form the injection molding cavity, heat-conducting silicone grease is injected into the injection molding cavity through the injection molding hole, the injection molding cavity and the injection mold body are dried together and then taken down, and a heat-conducting silicone grease layer is formed. The method is high in efficiency and good in quality effect and does not need to be trimmed again.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic water pump production and processing, and specifically relates to a thermal conductive silicone grease injection tooling and device for processing an electronic water pump heat dissipation shell. Background Art

[0002] An electronic water pump is one of the components in an automobile and is usually used for the circulation of engine coolant. The outer shell of the existing electronic water pump is usually made of plastic. The heat-generating electronic components (such as chips, transistors, etc.) on the circuit board inside the electronic water pump will generate a large amount of heat during operation. However, the plastic material itself has poor thermal conductivity, and there is no direct contact between the circuit board and the outer shell of the electronic water pump. There is air between the two, and air is a poor conductor of heat, resulting in poor heat dissipation of the heat-generating electronic components on the circuit board, easily causing the electronic components to overheat and affecting the life and performance of the electronic components.

[0003] The common solution is to provide a thermal conductive silicone grease layer on the inner side of the electronic water pump heat dissipation shell. The heat generated by the electronic components is transferred to the shell through the contact between the thermal conductive silicone grease and the electronic components, and the heat is dissipated through the shell, thereby avoiding the performance degradation caused by overheating of the electronic components. Currently, the electronic water pump heat dissipation shell with a thermal conductive silicone grease layer is formed by manually applying thermal conductive silicone grease on its inner side and then drying it after the shell is injection-molded and shaped. However, manual application affects the production efficiency and quality of the electronic water pump heat dissipation shell, and the thermal conductive silicone grease layer needs to be trimmed after drying. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention proposes a thermal conductive silicone grease injection tooling and device for processing an electronic water pump heat dissipation shell.

[0005] The technical problems to be solved by the present invention are realized by the following technical solutions:

[0006] A thermal conductive silicone grease injection tooling for processing an electronic water pump heat dissipation shell includes a tooling frame body. The tooling frame body is composed of two first positioning guide rods and one second positioning guide rod distributed circumferentially. The heights of the two first positioning guide rods are both higher than that of the second positioning guide rod. The three positioning guide rods are fixedly connected together by a lateral connecting plate. A connecting frame is slidably installed on the two first positioning guide rods. A connecting mechanism is arranged at the bottom of the connecting frame. A detachable injection mold body is arranged on the connecting mechanism. The injection mold body has a disc-shaped structure, and the central axis of the injection mold body coincides with the central axis of the tooling frame body.

[0007] As a further improvement of the present invention, connecting threaded holes are provided at the upper ends of the two first positioning guide rods.

[0008] As a further improvement of the present invention, axially distributed sliding guide grooves are provided on the inner rod walls of the two first positioning guide rods.

[0009] As a further improvement of the present invention, the connecting frame is in the shape of a circular plate, and two connecting parts protruding outward are arranged thereon. The two connecting parts are in an arc-shaped structure that fits the rod wall of the first positioning guide rod, and a connecting sliding part that cooperates with the sliding guide groove is arranged on the arc surface.

[0010] As a further improvement of the present invention, a connecting end is arranged on the plate body of the connecting frame.

[0011] As a further improvement of the present invention, the connecting mechanism includes a connecting seat arranged at the bottom of the connecting frame and a connecting sleeve rotatably installed at the upper end on the connecting seat. A connecting thread groove is opened on the inner sleeve wall of the connecting sleeve.

[0012] As a further improvement of the present invention, an installation end is arranged at the top of the injection mold body, and a connecting thread part matching the connecting thread groove is arranged on the installation end.

[0013] As a further improvement of the present invention, a limiting rod is rotatably connected to the lower side of the outer sleeve wall of the connecting sleeve. A limiting convex block is arranged on the lower rod part of the limiting rod, and a limiting card slot is arranged on the side wall of the installation end. The limiting convex block can be engaged in the limiting card slot.

[0014] As a further improvement of the present invention, at least two injection holes are arranged on the upper end surface of the injection mold body.

[0015] A thermal conductive silicone grease injection device for processing an electronic water pump heat dissipation shell includes the above-mentioned thermal conductive silicone grease injection tooling for processing an electronic water pump heat dissipation shell, and further includes a processing table and a translational processing plate arranged on the processing table. A tooling lifting frame is arranged on the processing table. The tooling lifting frame is located above the translational processing plate. The thermal conductive silicone grease injection tooling is connected to the tooling lifting frame. An elevating device connected to the connecting end and an injection device communicated with the injection hole are arranged on the tooling lifting frame.

[0016] The beneficial effects of the present invention are as follows:

[0017] The present invention provides a thermal conductive silicone grease injection tooling and device for processing an electronic water pump heat dissipation shell. The shell is positioned by the tooling frame body, and then the injection mold body is driven by the connecting frame to abut against the inner side of the shell to form an injection cavity. Thermal conductive silicone grease is injected into it through the injection hole, and after drying together with the injection mold body, it is taken off to form a thermal conductive silicone grease layer. Compared with the prior art, the present invention has high efficiency, good quality effect and does not require secondary trimming. Description of the Drawings

[0018] The following further describes the present invention in conjunction with the drawings and embodiments:

[0019] Figure 1 Schematic diagram of the overall structure of the injection molding tooling of the present invention;

[0020] Figure 2 Schematic diagram of the structure of the connection mechanism and the injection molding die body in the injection molding tooling of the present invention;

[0021] Figure 3 Schematic cross-sectional structure diagram of the connection mechanism and the injection molding die body in the injection molding tooling of the present invention;

[0022] Figure 4 Schematic diagram of the overall structure of the injection molding device of the present invention.

[0023] In the figure: 1. First positioning guide rod; 2. Second positioning guide rod; 3. Lateral connecting plate; 4. Connecting threaded hole; 5. Sliding guide groove; 6. Connecting frame; 7. Connecting part; 8. Connecting sliding part; 9. Connecting end; 10. Connecting seat; 11. Connecting sleeve; 12. Connecting threaded groove; 13. Injection molding die body; 14. Installation end; 15. Connecting threaded part; 16. Limiting rod; 17. Limiting convex block; 18. Limiting card slot; 19. Injection hole; 20. Processing table; 21. Translational processing plate; 22. Tooling lifting frame; 23. Lifting device; 24. Injection molding device. Specific embodiments

[0024] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with the drawings and embodiments.

[0025] As Figures 1 to 3 shown, a thermal conductive silicone grease injection molding tooling for processing an electronic water pump heat dissipation shell includes a tooling frame body. The tooling frame body is composed of two first positioning guide rods 1 and one second positioning guide rod 2 distributed circumferentially. The three positioning guide rods are fixedly connected together through a lateral connecting plate 3. In this embodiment, the lateral connecting plate 3 has an arc-shaped structure and is provided with three, which are sequentially connected to each other at different heights. The area between the three positioning guide rods is the placement area of the shell. The three positioning guide rods play a role in restricting and positioning the shell, ensuring that the shell does not shake during injection molding and affecting the injection molding effect. The heights of the two first positioning guide rods 1 are both higher than that of the second positioning guide rod 2 to form a placement notch for convenient placement of the shell. A connecting frame 6 is slidably installed on the two first positioning guide rods 1. A connection mechanism is arranged at the bottom of the connecting frame 6. A detachable injection molding die body 13 is arranged on the connection mechanism. The injection molding die body 13 has a disc-shaped structure. At least two injection holes 19 are arranged on the upper end surface of the injection molding die body 13. In this embodiment, specifically two are provided. The central axis of the injection molding die body 13 coincides with the central axis of the tooling frame body.

[0026] Furthermore, connection threaded holes 4 are provided at the upper ends of both of the first positioning guide rods 1, and the tooling is connected to the injection molding device through the connection threaded holes 4.

[0027] As a further improvement of this embodiment, sliding guide grooves 5 distributed axially are provided on the inner rod walls of the two first positioning guide rods 1, and the sliding guide grooves 5 are through grooves. The connecting frame 6 is in a circular plate structure, and is provided with two protruding connecting parts 7 thereon. The two connecting parts 7 are in an arc structure that fits the rod wall of the first positioning guide rod 1, and connecting sliding parts 8 that cooperate with the sliding guide grooves 5 are provided on the arc surfaces.

[0028] Furthermore, a connecting end 9 is provided on the plate body of the connecting frame 6.

[0029] As a further improvement of this embodiment, the connecting mechanism includes a connecting seat 10 provided at the bottom of the connecting frame 6 and a connecting sleeve 11 rotatably installed at the upper end on the connecting seat 10. A connecting threaded groove 12 is provided on the inner sleeve wall of the connecting sleeve 11. An installation end 14 is provided at the top of the injection molding die body 13, and a connecting threaded part 15 matching the connecting threaded groove 12 is provided on the installation end 14. Through the above structure, the detachable connection between the injection molding die body 13 and the connecting frame 6 is realized.

[0030] Furthermore, a limiting rod 16 is rotatably connected to the lower side of the outer sleeve wall of the connecting sleeve 11. A limiting convex block 17 is provided on the lower rod part of the limiting rod 16. A limiting card slot 18 is provided on the side wall of the installation end 14, and the limiting convex block 17 can be engaged in the limiting card slot 18. Through the above structure, when the installation end 14 rotates in place, the limiting convex block 17 performs circumferential limitation on it to prevent loosening during the injection molding process.

[0031] In the present invention, one injection molding tooling can be matched with multiple injection molding die bodies 13. After each housing injection molding is completed, the injection molding die body 13 enters the drying equipment together with the housing for drying, and the injection molding die body 13 can be removed and recycled after drying. Therefore, in this embodiment, the injection molding die body 13 is made of a material that does not adhere to thermal conductive silicone grease.

[0032] Such as Figure 4As shown in the figure, a thermal conductive silicone grease injection device for processing an electronic water pump heat dissipation shell includes the above-mentioned thermal conductive silicone grease injection tooling for processing an electronic water pump heat dissipation shell, and further includes a processing table 20 and a translational processing plate 21 arranged on the processing table 20. A tooling lifting frame 22 is arranged on the processing table 20. The tooling lifting frame 22 is located above the translational processing plate 21. The thermal conductive silicone grease injection tooling is connected to the tooling lifting frame 22. An elevating device 23 connected to the connecting end 9 and an injection device 24 communicated with the injection hole 19 are arranged on the tooling lifting frame 22. The translational processing plate 21 is used to place the injection tooling, and its translational direction is forward and backward translation. The tooling lifting frame 22 has the function of lifting up and down and is self-equipped with a driving source. Two injection pipes are connected to the bottom of the injection device 24, and the outer diameter of the pipe orifice of the injection pipe is adapted to the inner diameter of the injection hole 19.

[0033] During use, the injection tooling is placed on the translational processing plate 21, and the second positioning guide rod 2 faces the front side. It is fixedly connected to the tooling lifting frame 22 through the connecting threaded hole 4. The connecting frame 6 is fixedly connected to the elevating device 23 through the connecting end 9. The injection pipes at the bottom of the injection device 24 are communicated with the injection holes 19 on the injection mold body 13. The elevating device 23 drives the injection mold body 13 to rise to the top position. The housing is placed between the two first positioning guide rods 1 and one second positioning guide rod 2 from the front side, with the inner side of the housing facing up. Then the elevating device 23 drives the injection mold body 13 to move downward until the injection mold body 13 abuts against the inner side of the housing. Then the injection device 24 injects thermal conductive silicone grease into the injection mold body 13 through the injection pipe from the injection hole 19. After completion, the operator rotates the limit rod 16 to make the limit convex block 17 withdraw from the limit card slot 18, and rotates the connecting sleeve 11 to disconnect the injection mold body 13 from the connecting frame 6. The elevating device 23 drives the connecting frame 6 to rise and reset. At this time, the injection mold body 13 remains in the housing. Then the tooling lifting frame 22 drives the injection tooling to rise together, and the housing is separated from the injection tooling. Finally, the translational processing plate 21 moves forward to send the housing injected with thermal conductive silicone grease to the drying room. After drying, the injection mold body 13 is taken out from the housing and recycled for reuse. When injecting the next housing, a new injection mold body 13 is taken out and installed at the bottom of the connecting frame 6.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermal conductive silicone grease injection molding tool for processing an electronic water pump heat dissipation shell, comprising a tool frame, characterized in that: The tooling frame is composed of two No. 1 positioning guide rods (1) and one No. 2 positioning guide rod (2) distributed in a circumferential direction. The heights of the two No. 1 positioning guide rods (1) are both higher than the No. 2 positioning guide rod (2). The three positioning guide rods are fixedly connected together via a lateral connecting plate (3). A connecting frame (6) is slidably mounted on the two No. 1 positioning guide rods (1). A connecting mechanism is provided at the bottom of the connecting frame (6). A detachable injection mold (13) is provided on the connecting mechanism. The injection mold (13) is in a disc-shaped structure. The central axis of the injection mold (13) coincides with the central axis of the tooling frame.

2. The thermal conductive silicone grease injection molding tool for processing the heat dissipation shell of an electronic water pump according to claim 1, characterized in that: The upper ends of the two No. 1 positioning guide rods (1) are both provided with connecting threaded holes (4).

3. The thermal conductive silicone grease injection molding tool for processing the heat dissipation shell of an electronic water pump according to claim 1, characterized in that: The inner rod walls of the two No. 1 positioning guide rods (1) are provided with sliding guide grooves (5) distributed along the axial direction.

4. The thermal conductive silicone grease injection molding tool for processing the heat dissipation shell of an electronic water pump according to claim 3, characterized in that: The connecting frame (6) is a circular plate-shaped structure, on which two connecting parts (7) protruding outward are arranged, the two connecting parts (7) are in an arc-shaped structure that fits with the rod wall of the first positioning guide rod (1), and a connecting sliding part (8) that fits in the sliding guide groove (5) is arranged on the arc surface.

5. The thermal conductive silicone grease injection molding tool for processing the heat dissipation shell of an electronic water pump according to claim 1, characterized in that: A connecting terminal (9) is provided on the plate body of the connecting frame (6).

6. The thermal conductive silicone grease injection molding tool for processing the heat dissipation shell of an electronic water pump according to claim 1, characterized in that: The connection mechanism comprises a connection seat (10) arranged at the bottom of the connection frame (6), and a connection sleeve (11) whose upper end is rotatably mounted on the connection seat (10), and a connection thread groove (12) is provided on the inner sleeve wall of the connection sleeve (11).

7. The thermal conductive silicone grease injection molding tool for processing the heat dissipation shell of an electronic water pump according to claim 6, characterized in that: The top of the injection mold (13) is provided with a mounting end head (14), and the mounting end head (14) is provided with a connecting thread portion (15) matching the connecting thread groove (12).

8. The thermal conductive silicone grease injection molding tool for processing the heat dissipation shell of an electronic water pump according to claim 7, characterized in that: The lower side of the outer sleeve wall of the connecting sleeve (11) is rotatably connected to a limiting rod (16), a limiting protrusion (17) is provided on the lower rod portion of the limiting rod (16), a limiting slot (18) is provided on the side wall of the mounting end head (14), and the limiting protrusion (17) can be engaged in the limiting slot (18).

9. The thermal conductive silicone grease injection molding tool for processing the heat dissipation shell of an electronic water pump according to claim 1, characterized in that: At least two injection holes (19) are arranged on the upper end surface of the injection mold (13).

10. A thermal conductive silicone grease injection molding device for processing a heat dissipation shell of an electronic water pump, characterized in that: A thermal grease injection molding tool for processing an electronic water pump heat sink shell according to any one of claims 1 to 9, further comprising a processing table (20), a translational processing plate (21) arranged on the processing table (20), a tool lifting frame (22) being arranged on the processing table (20), the tool lifting frame (22) being located above the translational processing plate (21), the thermal grease injection molding tool being connected to the tool lifting frame (22), the tool lifting frame (22) being provided with a lifting device (23) connected to a connecting end (9) and an injection molding device (24) connected to an injection hole (19).

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