Cooling device for injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold cooling device. Comprising a machine body, an upper mold plate and a lower mold plate are installed on the machine body, an upper mold is fixedly connected to the upper mold plate, a lower mold is fixedly connected to the lower mold plate, the upper mold is matched with the lower mold, and a cooling structure is arranged on the machine body. The fan is started to drive airflow to enter the air frame from the dustproof net, penetrate through the air passing groove in the heat conduction copper plate and flow towards the ventilation opening, so that the airflow driven by the fan can better act on heat dissipation of the first liquid outlet pipe, and meanwhile, the airflow enters the lower mold along the ventilation opening and enters the upper mold along the first ventilation groove and the second ventilation groove; and finally, the air leaves the interior of the machine body from the air outlet net, the injection mold and the first liquid outlet pipe and the second liquid outlet pipe which are absorbing heat and are cooled are cooled, cooling liquid has a better cooling effect, the cooling effect of the device on the mold is directly improved, and the cooling effect of the device is not greatly reduced in the long-time use process of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold cooling device. Background Technique

[0002] An injection mold is a tool for producing plastic products and also a tool for endowing plastic products with a complete structure and precise dimensions. Injection molding is a processing method used when mass-producing some parts with complex shapes. Specifically, it means injecting the heat-melted plastic into the mold cavity under high pressure by an injection molding machine. After cooling and solidifying, a formed product is obtained. In order to cool the mold itself, a cooling device is provided on the mold for cooling.

[0003] An injection mold cooling device mentioned in the existing Chinese patent publication (authorization publication number: CN214395298U). It includes a lower support arranged below an upper support, a slide rod is arranged between the lower support and the upper support, the lower end surface of the upper support is equipped with an upper mold, a lower mold is arranged below the upper mold, an upper mold cooling plate is installed inside the upper mold, a lower mold cooling plate is arranged outside the lower mold, cooling pipes are installed inside both the lower mold cooling plate and the upper mold cooling plate, cooling water conduction blocks are arranged at the upper and lower ends inside the upper mold cooling plate, a movable frame is arranged at the lower end of the cooling water conduction block, a sealing pressing plate is installed on one side of the movable frame, a through port is arranged on the lower side of the movable frame, and limiting clamping pipes are arranged on both outer sides of the lower mold cooling plate.

[0004] When the existing injection mold cooling device cools, the coolant is continuously circulated from the liquid storage tank to the mold by a water pump, and the mold is cooled to drive the plastic mold in the mold to cool, thereby accelerating its cooling and solidification. However, when the existing device cools the mold, the temperature of the coolant will increase with the cycle of use, thereby reducing its subsequent cooling effect. Summary of the Utility Model

[0005] The purpose of this application is to provide an injection mold cooling device to solve the problem that when the existing device cools the mold, the temperature of the coolant will increase with the cycle of use and the cooling effect will be reduced.

[0006] The following technical solutions are specifically adopted in this application to achieve the above purpose:

[0007] An injection mold cooling device, comprising a machine body, on which an upper template and a lower template are installed. An upper mold is fixedly connected to the upper template, and a lower mold is fixedly connected to the lower template. The upper mold and the lower mold are adapted to each other. A cooling structure is provided on the machine body. The cooling structure includes a water tank fixedly connected inside the machine body. A first liquid inlet pipe is fixedly connected to the water tank. A liquid pumping pump is fixedly connected to the first liquid inlet pipe. The liquid pumping pump is fixedly connected to the machine body. The first liquid inlet pipe is fixedly connected to the lower template. The first liquid inlet pipe is fixedly connected with a plurality of first liquid outlet pipes. The first liquid outlet pipes are fixedly connected to the water tank.

[0008] By adopting the above technical solution, when using this device to cool the injection mold, first, the cooling liquid is brought into the upper template and the lower template through the cooling structure. Through its continuous circulation, the heat of the mold after injection is taken away. The liquid pumping pump is started to drive the cooling liquid to flow from the water tank into the first liquid inlet pipe. The first liquid inlet pipe injects the cooling liquid into the first liquid outlet pipes, and then the first liquid outlet pipes send the cooling liquid back to the water tank, making the cooling effect of the device more uniform, so that during the continuous use of the device, the cooling effect will not drop excessively, and the continuous working performance of the device is maintained.

[0009] Further, a second sleeve is fixedly connected to the first liquid inlet pipe. A second telescopic pipe is fixedly connected to the second sleeve. A second liquid inlet pipe is fixedly connected to the second telescopic pipe. The second liquid inlet pipe is fixedly connected to the upper template. The second liquid inlet pipe is fixedly connected with a plurality of second liquid outlet pipes. The end of the second liquid outlet pipe is fixedly connected with a first telescopic pipe. A first sleeve is fixedly connected to the first telescopic pipe. The first sleeve is fixedly connected to the first liquid outlet pipe.

[0010] By adopting the above technical solution, the first liquid inlet pipe and the second liquid inlet pipe respectively inject the cooling liquid into the first liquid outlet pipes and the second liquid outlet pipes. Through a plurality of the first liquid outlet pipes and the second liquid outlet pipes laid inside the upper template and the lower template, then the second liquid outlet pipe flows the cooling liquid into the first liquid outlet pipe through the first telescopic pipe by the first sleeve, and makes the cooling liquid flow back into the water tank from the first liquid outlet pipe, making the cooling effect of the device more uniform, and capable of cooling the upper template and the lower template simultaneously.

[0011] Further, a wind frame is fixedly connected inside the machine body. An air inlet is opened on the machine body. A dust-proof net is fixedly connected to the air inlet. The dust-proof net corresponds to the wind frame. A fan is fixedly connected to the wind frame.

[0012] By adopting the above technical solution, the heated cooling liquid flows from the first liquid outlet pipe towards the water tank. At this time, the fan is started to drive the air flow to enter the wind frame from the dust-proof net. The air flow driven by the fan acts on the heat dissipation of the first liquid outlet pipe, so that the cooling effect of the device will not be greatly reduced during long-term use.

[0013] Furthermore, a heat-conducting copper sleeve is fixedly connected to the first liquid outlet pipe, and the heat-conducting copper sleeve faces the fan.

[0014] By adopting the above technical solution, the heat-conducting copper sleeve conducts the temperature received by the first liquid outlet pipe to the outside of the heat-conducting copper sleeve, expanding the heat dissipation range of the first liquid outlet pipe.

[0015] Furthermore, a heat-conducting copper plate is fixedly connected between the heat-conducting copper sleeves, and air passing grooves are formed in the heat-conducting copper plate.

[0016] By adopting the above technical solution, through the cooperation of the heat-conducting copper plate and the heat-conducting cylinder sleeve, the cooling effect of the fan on the coolant is further enhanced.

[0017] Furthermore, a ventilation opening is formed between the machine body and the lower template, and four groups of first ventilation grooves are formed in the lower template.

[0018] By adopting the above technical solution, the air flow enters the lower mold through the ventilation opening, enabling the air flow to be fully utilized. When cooling the coolant better, it can also directly cool the mold.

[0019] Furthermore, four groups of second ventilation grooves are formed in the upper template, the first ventilation grooves and the second ventilation grooves are adapted to each other, and an air outlet net is fixedly connected to the upper template.

[0020] By adopting the above technical solution, the air flow of the fan enters the upper mold through the first ventilation grooves and the second ventilation grooves between the lower mold and the upper mold, and finally exits the machine body through the air outlet net, enabling it to cool the interiors of both the upper mold and the lower mold simultaneously.

[0021] In summary, the present application includes at least one of the following beneficial effects;

[0022] 1. In the present application, when the device cools the injection mold, the heated coolant flows from the first liquid outlet pipe to the water tank. At this time, the fan is started to drive the air flow to enter the air frame from the dust-proof net, and pass through the air passing grooves on the heat-conducting copper plate to flow towards the ventilation opening, enabling the air flow driven by the fan to better act on the heat dissipation of the first liquid outlet pipe. At the same time, the air flow enters the lower mold through the ventilation opening, and then enters the upper mold along the first ventilation grooves and the second ventilation grooves between the lower mold and the upper mold, and finally exits the machine body through the air outlet net. When the device cools the coolant returning to the water tank, it also cools the injection mold and the first liquid outlet pipe and the second liquid outlet pipe that are absorbing heat and cooling down, thereby enabling the coolant to receive a better cooling effect and directly improving the cooling effect of the device on the mold, so that the cooling effect of the device will not be greatly reduced during long-term use.

[0023] 2. When using this device to cool the mold in this application, start the liquid extraction pump to drive the coolant to flow from the water tank into the first liquid inlet pipe, and enter the second sleeve through the first liquid inlet pipe, and then enter the second liquid inlet pipe along the second sleeve. The first liquid inlet pipe and the second liquid inlet pipe respectively inject the coolant into the first liquid outlet pipe and the second liquid outlet pipe. The first liquid outlet pipe and the second liquid outlet pipe are laid inside the upper template and the lower template through several of them. Then, the second liquid outlet pipe flows the coolant from the sleeve into the first liquid outlet pipe through the first telescopic pipe, and makes the coolant flow back into the water tank from the first liquid outlet pipe, making the cooling effect of the device more uniform, and being able to cool the upper template and the lower template simultaneously. When the upper mold and the lower mold are cooled after injection molding, the problem of poor finished products caused by different cooling progress of the upper and lower parts due to uneven cooling is reduced, and the finished product effect of the injection molding device is improved. Description of the Drawings

[0024] Figure 1 is a schematic three-dimensional structure diagram of an injection mold cooling device in this application;

[0025] Figure 2 is a schematic internal structure diagram of an injection mold cooling device in this application;

[0026] Figure 3 is a schematic cooling structure diagram of an injection mold cooling device in this application;

[0027] Figure 4 is a schematic partial cross-sectional view diagram of an injection mold cooling device in this application;

[0028] Figure 5 is a schematic diagram of the inside of the upper template and the lower template of an injection mold cooling device in this application.

[0029] Description of the Reference Numerals:

[0030] 1. Body; 2. Upper template; 3. Lower template; 4. Lower mold; 5. First liquid inlet pipe; 6. First liquid outlet pipe; 7. Air outlet net; 8. Dust-proof net; 9. Liquid extraction pump; 10. Heat-conducting copper sleeve; 11. Wind frame; 12. Water tank; 13. Fan; 14. Heat-conducting copper plate; 15. First sleeve; 16. First telescopic pipe; 17. Second sleeve; 18. Second telescopic pipe; 19. Second liquid inlet pipe; 20. Upper mold; 21. First ventilation groove; 22. Second ventilation groove; 23. Ventilation opening; 24. Second liquid outlet pipe. Detailed Embodiment

[0031] The following is a further detailed description of this application in combination with the attached Figures 1-5 to further illustrate this application in detail.

[0032] The embodiment of this application discloses an injection mold cooling device.

[0033] Refer to Figure 1 AndFigure 2 , an injection mold cooling device, including a machine body 1, an upper template 2 and a lower template 3 are installed on the machine body 1, an upper mold 20 is fixedly connected to the upper template 2, a lower mold 4 is fixedly connected to the lower template 3, the upper mold 20 and the lower mold 4 are adapted to each other, a cooling structure is arranged on the machine body 1, and the cooling structure includes a water tank 12 fixedly connected inside the machine body 1, a first liquid inlet pipe 5 is fixedly connected to the water tank 12, a liquid pumping pump 9 is fixedly connected to the first liquid inlet pipe 5, the liquid pumping pump 9 is fixedly connected to the machine body 1, the first liquid inlet pipe 5 is fixedly connected to the lower template 3, and a number of first liquid outlet pipes 6 are fixedly connected to the first liquid inlet pipe 5, and the first liquid outlet pipes 6 are fixedly connected to the water tank 12.

[0034] When using this device to cool the injection mold, first bring the coolant into the upper template 2 and the lower template 3 through the cooling structure, and through its continuous circulation, thereby taking away the heat of the mold after injection molding. Start the liquid pumping pump 9 to drive the coolant to flow from the water tank 12 into the first liquid inlet pipe 5, continuously cool the mold through the coolant, and at the same time, the cooling structure will ensure that during the continuous use of the device, the cooling effect of the coolant will not drop excessively, maintaining the continuous working performance of the device.

[0035] Refer to Figure 2 And Figure 3 , Figure 5 , a second sleeve 17 is fixedly connected to the first liquid inlet pipe 5, a second telescopic pipe 18 is fixedly connected to the second sleeve 17, a second liquid inlet pipe 19 is fixedly connected to the second telescopic pipe 18, the second liquid inlet pipe 19 is fixedly connected to the upper template 2, a number of second liquid outlet pipes 24 are fixedly connected to the second liquid inlet pipe 19, a first telescopic pipe 16 is fixedly connected to the end of the second liquid outlet pipe 24, and a first sleeve 15 is fixedly connected to the first telescopic pipe 16, and the first sleeve 15 is fixedly connected to the first liquid outlet pipe 6.

[0036] When using this device to cool the mold, start the liquid pumping pump 9 to drive the coolant to flow from the water tank 12 into the first liquid inlet pipe 5, and enter the second sleeve 17 through the first liquid inlet pipe 5, and then enter the second liquid inlet pipe 19 along the second sleeve 17. The first liquid inlet pipe 5 and the second liquid inlet pipe 19 respectively inject the coolant into the first liquid outlet pipes 6 and the second liquid outlet pipes 24. Through a number of the first liquid outlet pipes 6 and the second liquid outlet pipes 24 laid inside the upper template 2 and the lower template 3, then the second liquid outlet pipe 24 flows the coolant into the first liquid outlet pipe 6 through the first telescopic pipe 16 and the first sleeve 15, and makes the coolant flow back into the water tank 12 from the first liquid outlet pipe 6, making the cooling effect of the device more uniform, and being able to cool the upper template 2 and the lower template 3 at the same time. When the upper mold 20 and the lower mold 4 are cooled after injection molding, it reduces the problem of poor finished products caused by different cooling progress of the upper and lower parts due to uneven cooling, improving the finished product effect of the injection device.

[0037] Refer to Figure 2 And Figure 3 ,Figure 4 , Figure 5 , a wind frame 11 is fixedly connected inside the machine body 1. An air inlet is provided on the machine body 1, and a dust-proof net 8 is fixedly connected to the air inlet. The dust-proof net 8 corresponds to the wind frame 11, and a fan 13 is fixedly connected to the wind frame 11. A heat-conducting copper sleeve 10 is fixedly connected to the first liquid outlet pipe 6, and the heat-conducting copper sleeve 10 faces the fan 13. A heat-conducting copper plate 14 is fixedly connected between the heat-conducting copper sleeves 10, and air passing grooves are provided on the heat-conducting copper plate 14. A ventilation opening 23 is provided between the machine body 1 and the lower template 3, and four groups of first ventilation grooves 21 are provided on the lower template 3. Four groups of second ventilation grooves 22 are provided on the upper template 2. The first ventilation grooves 21 are adapted to the second ventilation grooves 22, and an air outlet net 7 is fixedly connected to the upper template 2.

[0038] When the device cools the injection mold, the heated coolant flows from the first liquid outlet pipe 6 into the water tank 12. At this time, the fan 13 is started to drive the air flow to enter the wind frame 11 from the dust-proof net 8, and pass through the air passing grooves on the heat-conducting copper plate 14 to flow towards the ventilation opening 23. The heat-conducting copper sleeve 10 and the heat-conducting copper plate 14 increase the temperature range of the first liquid outlet pipe 6, so that the air flow driven by the fan 13 can better act on the heat dissipation of the first liquid outlet pipe 6. At the same time, the air flow enters the lower mold 4 through the ventilation opening 23, and then enters the upper mold 20 along the first ventilation grooves 21 and the second ventilation grooves 22 between the lower mold 4 and the upper mold 20, and finally leaves the inside of the machine body 1 from the air outlet net 7. When the device cools the coolant returning to the water tank 12, it also cools the injection mold and the first liquid outlet pipe 6 and the second liquid outlet pipe 24 that are absorbing heat and cooling down at the same time, so that the coolant can be better cooled, and directly improves the cooling effect of the device on the mold, so that the cooling effect of the device will not be greatly reduced during long-term use.

[0039] Working principle: When using the device to cool the mold, start the liquid extraction pump 9 to drive the coolant to flow from the water tank 12 into the first liquid inlet pipe 5, and enter the second sleeve 17 through the first liquid inlet pipe 5, and flow into the second liquid inlet pipe 19 along the second sleeve 17. The first liquid inlet pipe 5 and the second liquid inlet pipe 19 respectively inject the coolant into the first liquid outlet pipe 6 and the second liquid outlet pipe 24. Through a number of first liquid outlet pipes 6 and second liquid outlet pipes 24 laid inside the upper template 2 and the lower template 3, then the second liquid outlet pipe 24 flows the coolant into the first liquid outlet pipe 6 from the first sleeve 15 through the first telescopic pipe 16, and makes the coolant flow back into the water tank 12 from the first liquid outlet pipe 6;

[0040] When the device cools the injection mold, the heated coolant flows from the first liquid outlet pipe 6 into the water tank 12. At this time, the fan 13 is started to drive the air flow to enter the air frame 11 from the dust-proof net 8, and flow through the air passing slots on the heat-conducting copper plate 14 towards the ventilation opening 23. The heat-conducting copper sleeve 10 and the heat-conducting copper plate 14 will increase the temperature range of the first liquid outlet pipe 6, enabling the air flow driven by the fan 13 to better act on the heat dissipation of the first liquid outlet pipe 6. At the same time, the air flow enters the lower mold 4 through the ventilation opening 23, and then enters the upper mold 20 along the first ventilation slot 21 and the second ventilation slot 22 between the lower mold 4 and the upper mold 20, and finally exits the body 1 from the air outlet net 7.

Claims

1. An injection mold cooling device, comprising a body (1), characterized in that: An upper template (2) and a lower template (3) are mounted on the machine body (1); an upper mold (20) is fixedly connected to the upper template (2); a lower mold (4) is fixedly connected to the lower template (3); the upper mold (20) and the lower mold (4) are matched; a cooling structure is arranged on the machine body (1); the cooling structure comprises a water tank (12) fixedly connected to the machine body (1); a liquid inlet pipe (5) is fixedly connected to the water tank (12); a liquid pump (9) is fixedly connected to the liquid inlet pipe (5); the liquid pump (9) is fixedly connected to the machine body (1); the liquid inlet pipe (5) is fixedly connected to the lower template (3); the liquid inlet pipe (5) is fixedly connected to a plurality of liquid outlet pipes (6); the liquid outlet pipes (6) are fixedly connected to the water tank (12).

2. The injection mold cooling device according to claim 1, characterized in that: The first liquid inlet pipe (5) is fixedly connected to a second sleeve (17), the second sleeve (17) is fixedly connected to a second telescopic pipe (18), the second telescopic pipe (18) is fixedly connected to a second liquid inlet pipe (19), the second liquid inlet pipe (19) is fixedly connected to the upper template (2), the second liquid inlet pipe (19) is fixedly connected to a plurality of second liquid outlet pipes (24), the end of the second liquid outlet pipe (24) is fixedly connected to a first telescopic pipe (16), the first telescopic pipe (16) is fixedly connected to a first sleeve (15), and the first sleeve (15) is fixedly connected to the first liquid outlet pipe (6).

3. The injection mold cooling device according to claim 2, characterized in that: A wind frame (11) is fixedly connected inside the machine body (1), an air inlet is provided on the machine body (1), a dustproof net (8) is fixedly connected to the air inlet, the dustproof net (8) corresponds to the wind frame (11), and a fan (13) is fixedly connected to the wind frame (11).

4. The injection mold cooling device according to claim 3, characterized in that: A heat-conducting copper sleeve (10) is fixedly connected to the liquid outlet pipe 1 (6), and the heat-conducting copper sleeve (10) is directly opposite to the fan (13).

5. The injection mold cooling device according to claim 4, characterized in that: A heat-conducting copper plate (14) is fixedly connected between the heat-conducting copper sleeves (10), and an air passage groove is provided on the heat-conducting copper plate (14).

6. The injection mold cooling device according to claim 3, characterized in that: A ventilation opening (23) is provided between the machine body (1) and the lower template (3), and four sets of ventilation slots (21) are provided on the lower template (3).

7. The injection mold cooling device according to claim 6, characterized in that: The upper template (2) is provided with four groups of ventilation slots 2 (22), the ventilation slots 1 (21) are matched with the ventilation slots 2 (22), and an air outlet net (7) is fixedly connected to the upper template (2).

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