Rapid cooling device for injection mold

Abstract

The utility model relates to the technical field of cooling devices, in particular to a quick cooling device for an injection mold, which comprises a support table, an injection mold placed on the top of the support table, a plurality of support legs mounted on the bottom edge of the support table, a bottom plate connected among the support legs, a liquid storage tank mounted on one side of the top of the bottom plate, and a circulating pump mounted on the top of the liquid storage tank. The liquid inlet end of the circulating pump is connected with the interior of the liquid storage tank through a pipeline, and the liquid outlet end of the circulating pump is connected with a liquid inlet pipe. Cooling liquid in a liquid storage tank can be conveyed into a mold cooling cavity through a liquid inlet pipe by a circulating pump to cool a mold, then the high-temperature cooling liquid is conveyed into a heat exchange pipe through a third liquid discharge pipe and a second liquid discharge pipe, and cooling is conducted through the cold end of a refrigeration piece; and finally, the cooling liquid is conveyed into the liquid storage tank through the second liquid discharging pipe to be recycled, the cooling speed is high, and the using effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of cooling device technology, and in particular to a rapid cooling device for injection molds. Background Technology

[0002] Injection molds are specialized tools used in plastic injection molding processes. They are used to inject heated and molten plastic into the mold cavity, and after cooling and solidification, plastic products of the desired shape are obtained. After injection molding is completed, the injection mold needs to be cooled rapidly by a cooling device.

[0003] Existing cooling devices typically cool injection molds using water cooling. However, because the coolant temperature remains at room temperature, the cooling rate is slow and the cooling effect is poor. Furthermore, existing cooling devices cannot simultaneously position the mold when it is being fixed in place, resulting in poor fixation. Therefore, we propose a rapid cooling device for injection molds. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a rapid cooling device for injection molds.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rapid cooling device for injection molds is designed, including a support platform, an injection mold is placed on the top of the support platform, and several legs are installed on the bottom edge of the support platform, with a base plate connecting the legs.

[0006] A liquid storage tank is installed on one side of the top of the base plate. A circulation pump is installed on the top of the liquid storage tank. The inlet of the circulation pump is connected to the inside of the liquid storage tank through a pipe, and the outlet of the circulation pump is connected to an inlet pipe. One end of the inlet pipe is fixed to the inlet of the injection mold cooling cavity through a pipe joint.

[0007] The top of the base plate is equipped with a first drain pipe. One end of the first drain pipe passes through the support platform and is connected to a third drain pipe. The end of the third drain pipe is fixed to the outlet of the injection mold cooling cavity through a pipe joint.

[0008] A cooling box is installed at the bottom of the base plate. A partition is installed inside the cooling box. Several cooling plates are installed at the bottom of the partition. The cold end of the cooling plate extends to the top of the partition. The top of the partition and the interior of the cooling box form a sealed space. A heat exchange tube is installed at the top of the interior of the cooling box. The heat exchange tube is located in the sealed space. One end of the heat exchange tube is connected to the end of the first drain pipe. The other end of the heat exchange tube is connected to the second drain pipe. The other end of the second drain pipe passes through the base plate and is fixed to the top of the liquid storage tank.

[0009] The top of the support platform has several through slots, and each through slot has a movable block slidably connected inside. Both ends of the movable block extend outside the through slot, and the top of each movable block is connected to a clamping plate through a first connecting plate. The injection mold is located between the clamping plates.

[0010] A connecting ring is installed at the bottom of the support platform. A flat threaded disc is rotatably connected inside the connecting ring. The bottom of the flat threaded disc is connected to the drive motor through a rotating shaft, and the drive motor is fixed to the base plate through a mounting plate.

[0011] Each movable block has a second connecting plate installed at its bottom, and each second connecting plate has a rack installed at its bottom, which meshes with a flat threaded disc.

[0012] Preferably, the heat exchange tubes are arranged in an "S" shape or a serpentine shape.

[0013] Preferably, at least one air inlet is provided on one side of the bottom of the cooling box, the air inlet is located below the partition, a fan is installed inside the air inlet, and several heat dissipation slots are provided on the side of the cooling box away from the air inlet.

[0014] Preferably, the bottom of the partition is provided with a heat insulation pad.

[0015] Preferably, each through slot is equipped with a guide rod, and each guide rod slides through the corresponding moving block.

[0016] Preferably, when the moving block moves to one end of the through slot near the center of the support platform, the space formed by the clamping plate is smaller than the size of the injection mold.

[0017] Preferably, a control cabinet is installed on the side of one of the legs, and the controller inside the control cabinet is connected to the fan, drive motor, circulating pump and cooling plate respectively through wires.

[0018] The design scheme proposed in this utility model has the following beneficial effects in application:

[0019] The circulating pump delivers the coolant from the storage tank to the mold cooling chamber through the inlet pipe to cool the mold. Then, the high-temperature coolant is delivered to the heat exchange tube through the third and second drain pipes, where it is cooled by the cold end of the cooling fins. Finally, the coolant is delivered back to the storage tank through the second drain pipe for reuse. This fast cooling speed improves the performance.

[0020] The drive motor can rotate the flat threaded disc, which, under the action of the rack, can drive the clamping plate to move horizontally synchronously to clamp and fix the mold. During clamping, the mold can also be positioned to improve the usage effect. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a cross-sectional view of the drive motor and planar threaded disk structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the cooling tank and liquid storage tank of this utility model;

[0025] Figure 5 This is a side view of the structure of this utility model.

[0026] In the diagram: 1. Support platform; 2. Guide rod; 3. Through groove; 4. Liquid inlet pipe; 5. First connecting plate; 6. Connecting ring; 7. Moving block; 8. First drain pipe; 9. Base plate; 10. Mounting plate; 11. Liquid storage tank; 12. Air inlet; 13. Fan; 14. Cooling tank; 15. Support leg; 16. Second drain pipe; 17. Clamping plate; 18. Pipe joint; 19. Third drain pipe; 20. Second connecting plate; 21. Heat dissipation groove; 22. Drive motor; 23. Rotating shaft; 24. Flat threaded disc; 25. Rack; 26. Circulating pump; 27. Cooling element; 28. Heat exchange tube; 29. ​​Partition plate; 30. Control cabinet. Detailed Implementation

[0027] 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.

[0028] Reference Figures 1-5 A rapid cooling device for injection molds includes a support platform 1, on which an injection mold is placed. Several legs 15 are installed on the bottom edge of the support platform 1. A control cabinet 30 is installed on the side of one of the legs 15. The control cabinet 30 contains a controller, which is either a control motherboard or a PLC logic controller.

[0029] like Figure 1 and Figure 4As shown, a base plate 9 is connected between the support legs 15. A liquid storage tank 11 is installed on one side of the top of the base plate 9. A circulation pump 26 is installed on the top of the liquid storage tank 11. The circulation pump 26 is connected to the controller through a wire. The liquid inlet of the circulation pump 26 is connected to the inside of the liquid storage tank 11 through a pipe, and the liquid outlet of the circulation pump 26 is connected to an inlet pipe 4. One end of the inlet pipe 4 is fixed to the liquid inlet of the injection mold cooling cavity through a pipe joint 18. In actual use, the circulation pump 26 can transport the coolant in the liquid storage tank 11 to the cooling cavity of the mold through the inlet pipe 4 to quickly cool the injection mold.

[0030] like Figure 1 and Figure 2 As shown, a first drain pipe 8 is installed on the top of the base plate 9. One end of the first drain pipe 8 passes through the support platform 1 and is connected to a third drain pipe 19. The end of the third drain pipe 19 is fixed to the outlet of the injection mold cooling cavity through a pipe joint 18. In actual use, the coolant cools the mold in the injection mold cooling cavity and then is transported to the first drain pipe 8 through the third drain pipe 19.

[0031] like Figure 1 and Figure 4 As shown, a cooling box 14 is installed at the bottom of the base plate 9. A partition 29 is installed inside the cooling box 14. Several cooling chips 27 are installed at the bottom of the partition 29. The cooling chips 27 are connected to the controller via wires. The cold ends of the cooling chips 27 extend above the partition 29, and the top of the partition 29 forms a sealed space with the interior of the cooling box 14. A heat exchange tube 28 is installed at the top of the interior of the cooling box 14. The heat exchange tube 28 is located within this sealed space, and one end of the heat exchange tube 28 is connected to the first drain pipe 8. The first drain pipe 8 is connected to the end of the heat exchange tube 28, and the other end of the heat exchange tube 28 is connected to the second drain pipe 16. The other end of the second drain pipe 16 passes through the bottom plate 9 and is fixed to the top of the liquid storage tank 11. In actual use, the first drain pipe 8 delivers the high-temperature coolant after cooling the mold to the heat exchange tube 28, and the coolant in the heat exchange tube 28 is cooled down by the cold end of the cooling plate 27. The cooled coolant is then delivered to the second drain pipe 16 through the heat exchange tube 28 and finally flows back to the liquid storage tank 11.

[0032] like Figure 2 and Figure 4 As shown, at least one air inlet 12 is provided on one side of the bottom of the cooling box 14. The air inlet 12 is located below the partition 29. A fan 13 is installed inside the air inlet 12. Several heat dissipation slots 21 are provided on the side of the cooling box 14 away from the air inlet 12. In actual use, the fan 13 can blow external air to the hot end of the cooling chip 27 to cool the hot end of the cooling chip 27. The air blown in by the fan 13 is discharged to the external environment through the heat dissipation slots 21 after cooling the hot end of the cooling chip 27.

[0033] like Figure 1 and Figure 2 As shown, the top of the support platform 1 has several through slots 3. Each through slot 3 has a movable block 7 slidably connected inside. Both ends of the movable block 7 extend outside the through slot 3. The top of each movable block 7 is connected to a clamping plate 17 through a first connecting plate 5. The injection mold is located between the clamping plates 17. In actual use, the injection mold placed on the support platform 1 can be clamped and fixed by the clamping plates 17.

[0034] like Figure 3 and Figure 5 As shown, a connecting ring 6 is installed at the bottom of the support platform 1. A flat threaded disc 24 is rotatably connected inside the connecting ring 6. The bottom of the flat threaded disc 24 is connected to the drive motor 22 through a rotating shaft 23. The drive motor 22 is fixed on the base plate 9 through a mounting plate 10. The drive motor 22 is connected to the controller through a wire. The drive motor 22 is a brake motor. A second connecting plate 20 is installed at the bottom of each moving block 7. A rack 25 is installed at the bottom of each second connecting plate 20. The rack 25 meshes with the flat threaded disc 24. During use, the drive motor 22 can drive the flat threaded disc 24 to rotate. Under the action of the rack 25, the clamping plate 17 can be moved horizontally to clamp and position the mold.

[0035] It should be noted that each through slot 3 is equipped with a guide rod 2, and each guide rod 2 slides through the corresponding moving block 7. The moving block 7 can be positioned by the guide rod 2, so that the moving block 7 remains stable.

[0036] Specifically, in use, the operator places the mold on the support platform 1 and then controls the drive motor 22 to work. The drive motor 22 drives the flat threaded disc 24 to rotate. Under the action of the rack 25, the moving block 7 moves synchronously, so that the clamping plate 17 holds and fixes the mold in the middle of the support platform 1. Then, the pipe joint 18 on the inlet pipe 4 and the third outlet pipe 19 is fixed to the inlet and outlet of the mold cooling chamber. When cooling is required after injection molding, the operator controls the circulation pump 26 and the cooling plate 27 to work through the controller. The circulation pump 26 transports the coolant in the storage tank 11 through the pipe to the mold cooling chamber through the inlet pipe 4 to cool the mold. At the same time, the high-temperature coolant in the mold cooling chamber is transported to the heat exchange pipe 28 through the third outlet pipe 19 and the first outlet pipe 8. The cold end of the cooling plate 27 absorbs heat to cool the coolant in the heat exchange pipe 28. The cooled coolant is then transported back to the storage tank 11 through the second outlet pipe 16, so that the mold can be quickly cooled through circulation.

[0037] Furthermore, such as Figure 4As shown, the heat exchange tube 28 is arranged in an "S" shape or a serpentine shape, which increases the length of the heat exchange tube 28, prolongs the flow time of the coolant in the heat exchange tube 28, and thus prolongs the cooling time of the cooling plate 27 on the coolant, improving the cooling effect.

[0038] Furthermore, a heat insulation pad is provided at the bottom of the partition 29. The heat insulation pad can be made of aerogel felt or other materials with heat insulation properties. The heat insulation pad can separate the heat generated at the hot end of the cooling chip 27 from the space where the heat exchange tube 28 is located. In this way, the heat generated at the hot end of the cooling chip 27 will not hinder the cooling effect at the cold end of the cooling chip 27.

[0039] Furthermore, when the moving block 7 moves to one end of the through slot 3 near the center of the support platform 1, the space formed by the clamping plate 17 is smaller than the size of the injection mold. This ensures that the size of the mold is not too small and will not fall out of the stroke of the clamping plate 17, so that the clamping plate 17 can properly hold, fix and position the mold.

[0040] 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 rapid cooling device for injection molds, comprising a support table (1), characterized in that: An injection mold is placed on the top of the support platform (1), and several legs (15) are installed on the bottom edge of the support platform (1), and a base plate (9) is connected between the legs (15). A liquid storage tank (11) is installed on one side of the top of the base plate (9). A circulation pump (26) is installed on the top of the liquid storage tank (11). The inlet end of the circulation pump (26) is connected to the inside of the liquid storage tank (11) through a pipe. The outlet end of the circulation pump (26) is connected to an inlet pipe (4). One end of the inlet pipe (4) is fixed to the inlet of the injection mold cooling cavity through a pipe joint (18). The top of the base plate (9) is equipped with a first drain pipe (8), one end of the first drain pipe (8) passes through the support platform (1) and is connected to a third drain pipe (19), and the end of the third drain pipe (19) is fixed to the outlet of the injection mold cooling cavity through a pipe joint (18). A cooling box (14) is installed at the bottom of the base plate (9). A partition (29) is installed inside the cooling box (14). Several cooling plates (27) are installed at the bottom of the partition (29). The cold end of the cooling plate (27) extends to the top of the partition (29). The top of the partition (29) and the interior of the cooling box (14) form a sealed space. A heat exchange tube (28) is installed at the top of the interior of the cooling box (14). The heat exchange tube (28) is located in the sealed space. One end of the heat exchange tube (28) is connected to the end of the first drain pipe (8). The other end of the heat exchange tube (28) is connected to the second drain pipe (16). The other end of the second drain pipe (16) passes through the base plate (9) and is fixed to the top of the storage tank (11). The top of the support platform (1) is provided with several through slots (3), and each through slot (3) is slidably connected with a moving block (7). Both ends of the moving block (7) extend to the outside of the through slot (3), and the top of each moving block (7) is connected to a clamping plate (17) through a first connecting plate (5). The injection mold is located between the clamping plates (17). A connecting ring (6) is installed at the bottom of the support platform (1). A flat threaded disk (24) is rotatably connected inside the connecting ring (6). The bottom of the flat threaded disk (24) is connected to the drive motor (22) through a rotating shaft (23). The drive motor (22) is fixed on the base plate (9) through the mounting plate (10). Each movable block (7) has a second connecting plate (20) installed at its bottom, and each second connecting plate (20) has a rack (25) installed at its bottom, which meshes with the flat threaded disc (24).

2. The rapid cooling device for injection molds according to claim 1, characterized in that: The heat exchange tube (28) is arranged in an "S" shape or a serpentine shape.

3. The rapid cooling device for injection mold according to claim 1, characterized in that: At least one air inlet (12) is provided on one side of the bottom of the cooling box (14). The air inlet (12) is located below the partition (29). A fan (13) is installed inside the air inlet (12). Several heat dissipation slots (21) are provided on the side of the cooling box (14) away from the air inlet (12).

4. The rapid cooling device for injection mold according to claim 1, characterized in that: The bottom of the partition (29) is provided with a heat insulation pad.

5. The rapid cooling device for injection mold according to claim 1, characterized in that: Each through slot (3) is equipped with a guide rod (2), and each guide rod (2) slides through the corresponding moving block (7).

6. The rapid cooling device for injection mold according to claim 5, characterized in that: When the moving block (7) moves to one end of the through slot (3) near the center of the support platform (1), the space formed by the clamping plate (17) is smaller than the size of the injection mold.

7. The rapid cooling device for injection mold according to claim 1, characterized in that: A control cabinet (30) is installed on the side of one of the legs (15). The controller inside the control cabinet (30) is connected to the fan (13), drive motor (22), circulation pump (26) and cooling plate (27) respectively through wires.

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