Battery plastic part injection mold

Abstract

This utility model discloses an injection mold for battery plastic parts, belonging to the field of injection molds. The injection mold for battery plastic parts includes a moving mold and a fixed mold. The fixed mold is mounted on a fixed mold base plate, and the moving mold is mounted on a support plate. The support plate is connected to the moving mold base plate via a partition block. A punch is mounted on the moving mold, and a die is mounted on the fixed mold. A cooling box is provided on the outer side of the die, installed in a slot on the fixed mold. Both ends of the cooling box are connected to water inlet pipes via first distribution boxes, and the top and bottom of the cooling box are connected to drain pipes via second distribution boxes. Multiple cooling water pipes are evenly installed on the outer side of the cooling box. This utility model, through the annular cooling box mounted on the fixed mold and the second guide rod on the moving mold, enables rapid cooling after mold closing. Furthermore, the cooling box increases the cooling range, accelerates the cooling efficiency of the mold, and ensures more uniform cooling.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold for battery plastic parts. Background Technology

[0002] Battery plastic parts mainly include battery cases / covers, brackets, connectors, shells, seals, etc. They are generally formed in one step by injection molds. Injection molds are the core tools used for plastic molding in industrial production. By injecting molten plastic into the mold cavity, it is cooled and solidified to form plastic products with specific shapes, sizes and surface precision.

[0003] A search revealed Chinese patent application number 201921717807.1, which discloses an injection mold with easy heat dissipation. The mold includes a top plate, a bottom plate, a lower mold, and an upper mold, as well as a base. Two opposing side plates are mounted on the top surface of the base. The injection mold is mounted on the top surface of the base via the bottom plate and is located inside the two side plates. Cooling fans are mounted on opposite sides of the two side plates. An inlet pipe and an outlet pipe are mounted on both sides of the upper mold, and a cooling channel communicating with both the inlet and outlet pipes is formed within the upper mold. This injection mold, through its cooling fans and cooling channels, can simultaneously cool the mold from both the outside and inside, resulting in high cooling efficiency and high molding efficiency. After the upper and lower molds are closed, a manual auxiliary stabilizing component further stabilizes the mold, preventing vibration during injection molding, improving stability, and enhancing the quality of the molded parts.

[0004] Although the aforementioned patent can cool the mold from both the outside and inside simultaneously through the cooling fan and cooling channels, resulting in high cooling efficiency and high molding efficiency of plastic parts, the cooling channels used to cool the inside of the mold have a small cooling range during cooling, which can easily lead to uneven cooling, causing warping of the finished product and affecting the quality of the finished product.

[0005] Therefore, there is an urgent need for injection molds for battery plastic parts to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to solve the problem that the cooling channel inside the cooling mold in the prior art has a small cooling range during cooling, which easily leads to uneven cooling, causing warping of the finished product and affecting the quality of the finished product. Therefore, this invention proposes an injection mold for battery plastic parts.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A battery plastic part injection mold includes a moving mold and a fixed mold. The fixed mold is mounted on a fixed mold base plate, and the moving mold is mounted on a support plate. The support plate is connected to the moving mold base plate via a partition block. A punch is mounted on the moving mold, and a die is mounted on the fixed mold. A cooling box is provided on the outer side of the die and installed in a slot on the fixed mold. Both ends of the cooling box are connected to water inlet pipes through a first distribution box, and the top and bottom of the cooling box are connected to drain pipes through a second distribution box. Multiple cooling water pipes are evenly installed on the outer side of the cooling box. The top and bottom of the first distribution box are respectively connected to the second distribution boxes at the top and bottom of the cooling box through the multiple cooling water pipes. A cooling groove is provided on the outer side of the punch on the moving mold.

[0009] As a preferred technical solution of this application, the side of the partition is provided with a feeding mechanism, which includes a feeding plate and a plurality of first guide rods mounted on the feeding plate.

[0010] As a preferred technical solution of this application, the first guide rod passes through the support plate, and the side of the ejector plate is provided with a plurality of ejector pins that pass through the support plate and the moving mold.

[0011] As a preferred technical solution of this application, a buffer mechanism is installed at the outer end of the ejector pin.

[0012] As a preferred technical solution of this application, the buffer mechanism includes a connecting rod that is slidably connected to the through hole inside the ejector pin port. An end plate is fixedly installed on the outer end of the connecting rod. A spring connecting the ejector pin and the end plate is provided on the outer side of the connecting rod. The side of the end plate is connected to the ejector pin through a plurality of annularly distributed connecting rod assemblies.

[0013] As a preferred technical solution of this application, the connecting rod assembly includes a first connecting plate rotatably connected to the ejector pin and a second connecting plate rotatably connected to the end plate, wherein the free ends of the first connecting plate and the second connecting plate are rotatably connected.

[0014] As a preferred technical solution of this application, a second guide rod is installed on the moving mold, and a positioning hole that cooperates with the second guide rod is opened on the fixed mold.

[0015] Compared with the prior art, this utility model provides an injection mold for battery plastic parts, which has the following advantages:

[0016] 1. The injection mold for battery plastic parts, through the annular cooling box installed on the fixed mold and the second guide rod opened on the moving mold, can be rapidly cooled through the cooling box after the mold is closed. The cooling box can increase the cooling range, accelerate the cooling efficiency of the mold, and make the cooling more uniform. This solves the problem in the prior art that the cooling channel inside the cooling mold has a small cooling range, which can easily lead to uneven cooling, warping of the finished product, and other problems that affect the quality of the finished product.

[0017] 2. The injection mold for battery plastic parts, through the buffer mechanism set at the outer end of the ejector pin, can reduce the impact force when the material comes into contact with the part during ejection, thereby reducing the probability of the finished product being damaged due to excessive impact. This solves the problem in the prior art that the thin walls of the battery plastic parts are prone to breakage during ejection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the die mounting structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the punch mounting structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the ejector pin structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the cooling box structure of this utility model.

[0024] In the picture:

[0025] 1. Moving mold base plate; 2. Ejector plate; 4. Fixed mold base plate; 5. Support plate; 6. Moving mold; 7. Fixed mold; 8. Drain pipe; 9. Water inlet pipe; 10. First guide rod; 11. Punch; 12. Die; 13. Sprue; 14. Cooling box; 15. Cooling tank; 17. Second guide rod; 18. Ejector pin; 19. First connecting plate; 20. Second connecting plate; 21. End plate; 22. Spring; 23. Connecting rod; 24. First flow divider box; 25. Cooling water pipe; 26. Second flow divider box. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] Example:

[0028] Reference Figures 1-6 A battery plastic part injection mold includes a moving mold 6 and a fixed mold 7. The fixed mold 7 is mounted on a fixed mold base plate 4, and the moving mold 6 is mounted on a support plate 5. The support plate 5 is connected to the moving mold base plate 1 through a partition. A punch 11 is mounted on the moving mold 6, and a die 12 is mounted on the fixed mold 7. An ejector mechanism is provided on the side of the partition. The ejector mechanism includes an ejector plate 2 and a plurality of first guide rods 10 mounted on the ejector plate 2. The first guide rods 10 pass through the support plate 5. A plurality of ejector pins 18 through the support plate 5 and the moving mold 6 are provided on the side of the ejector plate 2. When the ejector plate 2 is pushed, the ejector pins 18 are moved to eject the molded part, which is convenient for material removal. A sprue 13 communicating with the die 12 is provided in the middle of the fixed mold 7.

[0029] The outer side of the concave mold 12 is provided with a cooling box 14 installed in the slot on the fixed mold 7. Both ends of the cooling box 14 are connected to water inlet pipes 9 through the first diversion box 24. The top and bottom of the cooling box 14 are connected to drain pipes 8 through the second diversion box 26. Multiple cooling water pipes 25 are evenly installed on the outer side of the cooling box 14. The top and bottom of the first diversion box 24 are respectively connected to the second diversion box 26 at the top and bottom of the cooling box 14 through multiple cooling water pipes 25. After the cooling water enters through the water inlet pipe 9, it is diverted through the first diversion box 24 and then discharged from the drain pipe 8, which speeds up the flow of cooling water, improves cooling efficiency, and makes cooling more uniform. The outer side of the punch 11 is provided with a cooling groove 15 opened on the moving mold 6. After the mold is closed, the cooling box 14 is inserted into the cooling groove 15, which can increase the cooling range during cooling.

[0030] The moving mold 6 is equipped with a second guide rod 17, and the fixed mold 7 is provided with a positioning hole that cooperates with the second guide rod 17. When the mold is closed, the accuracy of the mold closure can be maintained by the combination of the second guide rod 17 and the positioning hole.

[0031] Reference Figure 4 and Figure 5Furthermore, a buffer mechanism is installed at the outer end of the ejector pin 18. Since the molding shell is relatively thin, it is easy for the finished product to break or be punctured due to collision during ejection. The buffer mechanism can effectively reduce the impact force during ejection. The buffer mechanism includes a connecting rod 23 that is slidably connected to the through hole inside the port of the ejector pin 18. An end plate 21 is fixedly installed at the outer end of the connecting rod 23. The side of the end plate 21 is connected to the ejector pin 18 through multiple annularly distributed connecting rod assemblies. The connecting rod assembly includes a first connecting plate 19 that is rotatably connected to the ejector pin 18 and a second connecting plate 20 that is rotatably connected to the end plate 21. The free ends of the first connecting plate 19 and the second connecting plate 20 are rotatably connected. A spring 22 is provided on the outer side of the connecting rod 23 to connect the ejector pin 18 and the end plate 21. During ejection, the end plate 21 presses against the finished product and squeezes the ejector pin plate 2 after contact, buffering the impact force, reducing damage to the finished product, and improving the quality of the finished product. When the first connecting plate 19 and the second connecting plate 20 are subjected to force, they rotate inward.

[0032] Specifically, when using this battery plastic part injection mold: the mold is installed on the injection molding machine. After the mold is closed, the molten raw material is injected into the cavity formed by the punch 11 and the die 12 after the mold is closed through the sprue 13. Cooling water is injected into the cooling box 14 to accelerate the cooling speed of the mold. Then the mold is opened and the molded material is ejected through multiple ejector pins 18.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A battery plastic part injection mold, comprising a moving mold (6) and a fixed mold (7), wherein the fixed mold (7) is mounted on a fixed mold base plate (4), the moving mold (6) is mounted on a support plate (5), the support plate (5) is connected to the moving mold base plate (1) via a partition block, a punch (11) is mounted on the moving mold (6), and a die (12) is mounted on the fixed mold (7), characterized in that, The outer side of the concave mold (12) is provided with a cooling box (14) installed in the slot on the fixed mold (7). Both ends of the cooling box (14) are connected to water inlet pipes (9) through the first diversion box (24). The top and bottom of the cooling box (14) are connected to drain pipes (8) through the second diversion box (26). Multiple cooling water pipes (25) are evenly installed on the outer side of the cooling box (14). The top and bottom of the first diversion box (24) are respectively connected to the second diversion box (26) at the top and bottom of the cooling box (14) through multiple cooling water pipes (25). The outer side of the punch (11) is provided with a cooling groove (15) opened on the moving mold (6).

2. The injection mold for battery plastic parts according to claim 1, characterized in that, The side of the partition is provided with a feeding mechanism, which includes a feeding plate (2) and a plurality of first guide rods (10) installed on the feeding plate (2).

3. The injection mold for battery plastic parts according to claim 2, characterized in that, The first guide rod (10) passes through the support plate (5), and the side of the ejector plate (2) is provided with a plurality of ejector pins (18) that pass through the support plate (5) and the moving mold (6).

4. The injection mold for battery plastic parts according to claim 2, characterized in that, The outer end of the ejector pin (18) is equipped with a buffer mechanism.

5. The injection mold for battery plastic parts according to claim 4, characterized in that, The buffer mechanism includes a connecting rod (23) that is slidably connected to the inner through hole of the ejector pin (18). An end plate (21) is fixedly installed on the outer end of the connecting rod (23). A spring (22) is provided on the outer side of the connecting rod (23) to connect the ejector pin (18) and the end plate (21). The side of the end plate (21) is connected to the ejector pin (18) through a plurality of annularly distributed connecting rod assemblies.

6. The injection mold for a battery plastic part according to claim 5, characterized in that, The connecting rod assembly includes a first connecting plate (19) rotatably connected to the ejector pin (18) and a second connecting plate (20) rotatably connected to the end plate (21), with the free ends of the first connecting plate (19) and the second connecting plate (20) rotatably connected.

7. The injection mold for battery plastic parts according to claim 1, characterized in that, The moving mold (6) is equipped with a second guide rod (17), and the fixed mold (7) is provided with a positioning hole that cooperates with the second guide rod (17).

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