Injection mold with high efficiency heat dissipation and demolding

By introducing a cooling water circulation system and an electric ejector guide groove design into the injection mold, the problems of slow heat dissipation and unstable demolding in traditional molds have been solved, achieving efficient heat dissipation and stable demolding, thereby improving production efficiency and product quality.

CN224675466UActive Publication Date: 2026-08-25DONGGUAN CHANGRUN PLASTIC MOULD TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202522080413.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-27
Publication Date
2026-08-25
Estimated Expiration
2035-09-27

AI Technical Summary

Technical Problem

Traditional molds have simple heat dissipation structures that rely on natural heat dissipation from metal materials or have limited cooling channels, resulting in small heat dissipation area, slow cooling speed, extended molding cycle, and impact on product quality and production efficiency.

Method used

The system employs a heat dissipation component, which utilizes a water storage tank, water supply pipes, heat dissipation channels, and drainage pipes to efficiently absorb the heat from the mold and molten plastic through a cooling water circulation system. Combined with the electric push rod and guide groove of the demolding component, it ensures the stability of the demolding process.

Benefits of technology

It enables rapid cooling of the mold and plastic, shortens the molding cycle, improves product quality and demolding efficiency, and ensures that plastic products do not deform or get damaged during demolding.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224675466U_ABST
    Figure CN224675466U_ABST
Patent Text Reader

Abstract

The utility model relates to injection mold technical field, concretely is a kind of high -efficient heat dissipation demoulding's injection mold, including mould body;Heat dissipation subassembly, the heat dissipation subassembly includes the lower mould for production tool.The high -efficient heat dissipation demoulding's injection mold, by installing heat dissipation subassembly, in the molten state plastic raw material is injected into the mould groove of lower mould, after completing injection operation, water pump in water storage tank can be used to send cooling water to lower mould by water pipe, and these cooling water are evenly distributed to heat dissipation channel by connecting pipe, these heat dissipation channel distribution is more reasonable, and coverage area is larger, can more comprehensive, efficient heat absorption mould and molten plastic, to quickly reduce the temperature of mould and plastic, promote plastic solidification, and cooling water after absorbing heat flows in heat dissipation channel, is gathered to drain pipe by connecting pipe two, finally flows back to water storage tank, realizes the recycling of cooling water, to be able to accelerate demoulding speed.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold with high-efficiency heat dissipation and demolding. Background Technology

[0002] In modern industrial production, injection molding technology is widely used in many fields such as automobile manufacturing, electronics, medical devices, and daily necessities due to its advantages of efficient and mass production of complex-shaped plastic products. As the core equipment of injection molding technology, the performance of injection molds directly affects the quality, production efficiency, and production cost of plastic products.

[0003] In the injection molding process, after the molten plastic raw material is injected into the mold cavity, it needs to undergo a cooling and solidification process to form a qualified product. However, the heat dissipation structure design of traditional molds is often relatively simple, relying mainly on the metal material of the mold itself for natural heat dissipation, or only setting a small number of cooling channels, resulting in limited heat dissipation area and slow cooling speed. This not only prolongs the molding cycle and reduces production efficiency, but may also seriously affect product quality due to uneven cooling. Therefore, there is a need to provide an injection mold with efficient heat dissipation and demolding. Utility Model Content

[0004] The purpose of this utility model is to provide an injection mold with high-efficiency heat dissipation and demolding, to solve the problem mentioned in the background art that the heat dissipation structure design of traditional molds is often relatively simple, relying mainly on the metal material of the mold itself for natural heat dissipation, or only setting a few cooling channels, resulting in limited heat dissipation area and slow cooling speed. This not only prolongs the molding cycle and reduces production efficiency, but may also seriously affect product quality due to uneven cooling. To achieve the above objective, this utility model provides the following technical solution: an injection mold with high-efficiency heat dissipation and demolding, including a mold body;

[0005] A heat dissipation assembly includes a lower mold for a production tool. The lower mold is fixedly connected to the top of a mold body. A support base plate is fixedly connected to the bottom of the mold body. A water tank is fixedly connected to the top of the support base plate. One end of the water tank is fixedly connected to a water supply pipe, which is fixedly connected to the interior of the lower mold. The water supply pipe is fixedly connected to a connecting pipe (first connection pipe), which is also fixedly connected to the interior of the lower mold. A heat dissipation channel is formed inside the lower mold, located on the side surface of the first connecting pipe. The other end of the heat dissipation channel is fixedly connected to a second connecting pipe, whose side surface is fixedly connected to a drain pipe, which is fixedly connected to the interior of the water tank. After the installation of heat dissipation components, molten plastic raw material is injected into the mold groove of the lower mold. After the injection molding operation is completed, the water pump in the water tank can be used to transport cooling water to the lower mold through the water supply pipe. The cooling water is then evenly distributed into the heat dissipation channels through the connecting pipe. These heat dissipation channels are more rationally distributed and have a larger coverage area, which can more comprehensively and efficiently absorb the heat of the mold and molten plastic. This can quickly reduce the temperature of the mold and plastic, promote plastic solidification, and the cooling water flows in the heat dissipation channels after absorbing heat. It is then collected in the drain pipe through the connecting pipe and finally flows back to the water tank, realizing the recycling of cooling water. This can speed up the demolding speed, ensure product quality, and improve the practicality of the device.

[0006] The demolding assembly includes an electric push rod for demolding, which is fixedly connected inside the mold body. An ejector plate is fixedly connected to the top of the electric push rod, and an ejector block is fixedly connected to the top of the ejector plate. A mold groove is provided at the bottom of the lower mold, and the ejector block is movably connected to the inner wall of the mold groove.

[0007] More preferably, the heat dissipation assembly further includes a water inlet, which is located on the top of the water storage tank, and a sealing cap is fitted onto the side surface of the water inlet.

[0008] More preferably, the heat dissipation assembly further includes a discharge pipe, which is fixedly connected to the front of the water storage tank, and a control valve is provided on the side surface of the discharge pipe.

[0009] In a further preferred embodiment, the demolding assembly further includes a guide groove, which is formed on the inner wall of the mold body. A guide block is movably connected to the inner wall of the guide groove, and a guide post is movably connected inside the guide block. A connecting strip is fixedly connected to one side of the guide block, and the connecting strip is fixedly connected to one side of the ejector plate. By installing the demolding assembly, after the plastic has cooled and solidified in the mold groove, the electric push rod is activated. The electric push rod pushes the ejector plate upward, and the ejector plate drives the ejector block to move upward in the mold groove, ejecting the molded plastic product from the mold groove. During the movement of the ejector plate, the guide block moves synchronously along the guide post in the guide groove, which guides and stabilizes the movement of the ejector plate, ensuring a smooth and uniform ejection process and preventing deformation or damage to the plastic product during demolding, thus improving the practicality of the device.

[0010] More preferably, a support rod is fixedly connected to the top of the mold body, and a connecting spring is sleeved on the side surface of the support rod.

[0011] More preferably, a support top plate is fixedly connected to the top of the support rod, and an electric push rod 2 is fixedly connected to the top of the support top plate.

[0012] More preferably, the bottom of the electric actuator is fixedly connected to a connecting plate, the connecting plate is movably connected to the side surface of the support rod, and the bottom of the connecting plate is fixedly connected to an upper mold.

[0013] More preferably, a control panel is fixedly connected to the front of the water storage tank, and a display screen is fixedly connected to the front of the control panel. By installing the control panel, an electrical connection can be made between the control panel and electric actuator one and electric actuator two.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In this invention, by installing a heat dissipation component, after the molten plastic raw material is injected into the mold groove of the lower mold and the injection molding operation is completed, the water pump in the water tank can transport cooling water to the lower mold through the water supply pipe. The cooling water is then evenly distributed into the heat dissipation channels through connecting pipes. These heat dissipation channels are more rationally distributed and have a larger coverage area, enabling them to more comprehensively and efficiently absorb the heat from the mold and the molten plastic. This quickly reduces the temperature of the mold and the plastic, promoting plastic solidification. The cooling water, after absorbing heat, flows within the heat dissipation channels and is collected through connecting pipe two into the drain pipe, ultimately flowing back to the water tank, achieving the recycling of cooling water. This accelerates the demolding speed, ensures product quality, and improves the practicality of the device.

[0016] In this invention, by installing a demolding assembly, after the plastic has cooled and solidified in the mold groove, the electric push rod is activated. The electric push rod pushes the ejector plate upward, and the ejector plate drives the ejector block to move upward in the mold groove, ejecting the molded plastic product from the mold groove. During the movement of the ejector plate, the guide block moves synchronously along the guide post in the guide groove, which guides and stabilizes the movement of the ejector plate, ensuring a smooth and uniform ejection process and preventing deformation or damage to the plastic product during demolding, thus improving the practicality of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0020] Figure 4 This is a schematic cross-sectional view of the present invention.

[0021] Figure 5 This is a partial three-dimensional structural diagram of the present invention;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 4 .

[0023] In the diagram: 1. Mold body; 2. Heat dissipation assembly; 3. Demolding assembly; 4. Support rod; 5. Connecting spring; 6. Support top plate; 7. Electric push rod II; 8. Connecting plate; 9. Upper mold; 10. Control panel; 11. Display screen; 201. Lower mold; 202. Support base plate; 203. Water tank; 204. Water supply pipe; 205. Connecting pipe I; 206. Heat dissipation channel; 207. Connecting pipe II; 208. Drain pipe; 209. Water inlet; 210. Sealing cap; 211. Discharge pipe; 212. Control valve; 301. Electric push rod I; 302. Ejector plate; 303. Ejector block; 304. Mold groove; 305. Guide groove; 306. Guide block; 307. Guide post; 308. Connecting strip. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-6 This utility model provides a technical solution: an injection mold with high efficiency in heat dissipation and demolding, including a mold body 1;

[0026] The heat dissipation assembly 2 includes a lower mold 201 for the production tool. The lower mold 201 is fixedly connected to the top of the mold body 1. A support base plate 202 is fixedly connected to the bottom of the mold body 1. A water storage tank 203 is fixedly connected to the top of the support base plate 202. One end of the water storage tank 203 is fixedly connected to a water supply pipe 204. After the molten plastic raw material is injected into the mold groove 304 of the lower mold 201 and the injection molding operation is completed, the water pump in the water storage tank 203 can use the water supply pipe 204 to transport cooling water to the lower mold 201. The water supply pipe 204 is fixedly connected to the inside of the lower mold 201. The water supply pipe 204 is fixedly connected to a connecting pipe 205, which is also fixedly connected to the inside of the lower mold 201. The lower mold 201 has an opening inside. The cooling water is evenly distributed into the heat dissipation channel 206 through the connecting pipe 205. The heat dissipation channel 206 is more rationally distributed and has a larger coverage area, which can more comprehensively and efficiently absorb the heat of the mold and molten plastic, thereby quickly reducing the temperature of the mold and plastic and promoting plastic curing. The heat dissipation channel 206 is opened on the side surface of the connecting pipe 205. The other end of the heat dissipation channel 206 is fixedly connected to the connecting pipe 207. The cooling water after absorbing heat flows in the heat dissipation channel 206 and is collected in the drain pipe 208 through the connecting pipe 207, and finally flows back to the water storage tank 203, realizing the recycling of cooling water. The side surface of the connecting pipe 207 is fixedly connected to the drain pipe 208, and the drain pipe 208 is fixedly connected to the inside of the water storage tank 203.

[0027] The demolding assembly 3 includes an electric push rod 301 for demolding. After the plastic has cooled and solidified in the mold groove 304, the electric push rod 301 is activated. The electric push rod 301 pushes the ejector plate 302 upward. The ejector plate 302 drives the ejector block 303 to move upward in the mold groove 304, ejecting the molded plastic product from the mold groove 304. The electric push rod 301 is fixedly connected to the inside of the mold body 1. The top of the electric push rod 301 is fixedly connected to the ejector plate 302. The top of the ejector plate 302 is fixedly connected to the ejector block 303. The bottom of the lower mold 201 has a mold groove 304. The ejector block 303 is movably connected to the inner wall of the mold groove 304.

[0028] In this embodiment, as Figure 2 and Figure 3 As shown, the heat dissipation assembly 2 also includes a water inlet 209, which is located on the top of the water storage tank 203, and a sealing cap 210 is fitted onto the side surface of the water inlet 209.

[0029] In this embodiment, as Figure 2 As shown, the heat dissipation assembly 2 also includes a discharge pipe 211, which is fixedly connected to the front of the water storage tank 203, and a control valve 212 is provided on the side surface of the discharge pipe 211.

[0030] In this embodiment, as Figure 5 and Figure 6 As shown, the demolding assembly 3 also includes a guide groove 305, which is formed on the inner wall of the mold body 1. A guide block 306 is movably connected to the inner wall of the guide groove 305. During the movement of the ejector plate 302, the guide block 306 moves synchronously along the guide post 307 in the guide groove 305, which guides and stabilizes the movement of the ejector plate 302, ensuring that the ejection process is smooth and uniform. The guide post 307 is movably connected inside the guide block 306. A connecting strip 308 is fixedly connected to one side of the guide block 306. The connecting strip 308 is fixedly connected to one side of the ejector plate 302.

[0031] In this embodiment, as Figure 1 and Figure 6 As shown, a support rod 4 is fixedly connected to the top of the mold body 1, and a connecting spring 5 is sleeved on the side surface of the support rod 4.

[0032] In this embodiment, as Figure 1 and Figure 6 As shown, a support top plate 6 is fixedly connected to the top of the support rod 4, and an electric push rod 7 is fixedly connected to the top of the support top plate 6.

[0033] In this embodiment, as Figure 1 and Figure 6As shown, the bottom of the electric actuator 7 is fixedly connected to a connecting plate 8, which is movably connected to the side surface of the support rod 4. The bottom of the connecting plate 8 is fixedly connected to an upper mold 9.

[0034] In this embodiment, as Figure 2 As shown, a control panel 10 is fixedly connected to the front of the water storage tank 203, and a display screen 11 is fixedly connected to the front of the control panel 10. By installing the control panel 10, an electrical connection can be made between the control panel 10 and the electric actuator 301 and the electric actuator 7.

[0035] The method of use and advantages of this utility model: The high-efficiency heat dissipation and demolding injection mold works as follows:

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, after the molten plastic raw material is injected into the mold groove 304 of the lower mold 201 and the injection molding operation is completed, the water pump in the water tank 203 can use the water supply pipe 204 to transport cooling water to the lower mold 201. This cooling water is then evenly distributed into the heat dissipation channels 206 through the connecting pipe 205. These heat dissipation channels 206 are more rationally distributed and have a larger coverage area, enabling them to more comprehensively and efficiently absorb the heat from the mold and the molten plastic. This quickly reduces the temperature of the mold and the plastic, promoting plastic solidification. The cooling water, after absorbing heat, flows within the heat dissipation channels 206 and is then distributed through the connecting pipe 205. 207 flows into the drain pipe 208 and eventually back into the water storage tank 203, realizing the recycling of cooling water. At the same time, after the plastic has cooled and solidified in the mold groove 304, the electric push rod 301 is activated. The electric push rod 301 pushes the ejector plate 302 upward. The ejector plate 302 drives the ejector block 303 to move upward in the mold groove 304, ejecting the molded plastic product from the mold groove 304. During the movement of the ejector plate 302, the guide block 306 moves synchronously along the guide post 307 in the guide groove 305, which guides and stabilizes the movement of the ejector plate 302, ensuring that the ejection process is smooth and uniform.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An injection mold with high-efficiency heat dissipation and demolding, characterized in that, Includes the mold body (1); A heat dissipation assembly (2) includes a lower mold (201) for production tools. The lower mold (201) is fixedly connected to the top of the mold body (1). A support base plate (202) is fixedly connected to the bottom of the mold body (1). A water storage tank (203) is fixedly connected to the top of the support base plate (202). One end of the water storage tank (203) is fixedly connected to a water supply pipe (204). The water supply pipe (204) is fixedly connected to the inside of the lower mold (201). A connecting pipe (205) is fixedly connected to the interior of the lower mold (201). A heat dissipation channel (206) is provided inside the lower mold (201). The heat dissipation channel (206) is opened on the side surface of the connecting pipe (205). The other end of the heat dissipation channel (206) is fixedly connected to a connecting pipe (207). A drain pipe (208) is fixedly connected to the side surface of the connecting pipe (207). The drain pipe (208) is fixedly connected to the interior of the water storage tank (203). The demolding assembly (3) includes an electric push rod (301) for demolding. The electric push rod (301) is fixedly connected to the inside of the mold body (1). An ejector plate (302) is fixedly connected to the top of the electric push rod (301). An ejector block (303) is fixedly connected to the top of the ejector plate (302). A mold groove (304) is provided at the bottom of the lower mold (201). The ejector block (303) is movably connected to the inner wall of the mold groove (304).

2. The injection mold for high-efficiency heat dissipation and demolding according to claim 1, characterized in that: The heat dissipation assembly (2) also includes a water inlet (209), which is located on the top of the water storage tank (203), and a sealing cap (210) is fitted onto the side surface of the water inlet (209).

3. The injection mold for high-efficiency heat dissipation and demolding according to claim 1, characterized in that: The heat dissipation assembly (2) also includes a discharge pipe (211), which is fixedly connected to the front of the water storage tank (203), and a control valve (212) is provided on the side surface of the discharge pipe (211).

4. The injection mold for high-efficiency heat dissipation and demolding according to claim 1, characterized in that: The demolding assembly (3) also includes a guide groove (305), which is formed on the inner wall of the mold body (1). A guide block (306) is movably connected to the inner wall of the guide groove (305). A guide post (307) is movably connected inside the guide block (306). A connecting strip (308) is fixedly connected to one side of the guide block (306). The connecting strip (308) is fixedly connected to one side of the ejector plate (302).

5. The injection mold for high-efficiency heat dissipation and demolding according to claim 1, characterized in that: A support rod (4) is fixedly connected to the top of the mold body (1), and a connecting spring (5) is sleeved on the side surface of the support rod (4).

6. The injection mold for high-efficiency heat dissipation and demolding according to claim 5, characterized in that: The top of the support rod (4) is fixedly connected to a support plate (6), and the top of the support plate (6) is fixedly connected to an electric actuator (7).

7. The injection mold for high-efficiency heat dissipation and demolding according to claim 6, characterized in that: The bottom of the electric actuator (7) is fixedly connected to a connecting plate (8), which is movably connected to the side surface of the support rod (4). The bottom of the connecting plate (8) is fixedly connected to an upper mold (9).

8. The injection mold for high-efficiency heat dissipation and demolding according to claim 1, characterized in that: The front of the water storage tank (203) is fixedly connected to a control panel (10), and the front of the control panel (10) is fixedly connected to a display screen (11).