Cooling mechanism of plastic mold

Abstract

The utility model discloses a cooling mechanism of a plastic mold, and relates to the technical field of plastic molds. The lower die comprises a lower die body, a forming cavity is formed in the upper surface of the lower die body, a cooling groove is formed in the lower die body around the forming cavity, a water tank is arranged on one side of the outer wall of the lower die body, a water inlet pipe is connected to one end of the water tank, and the end, away from the water tank, of the water inlet pipe is connected into the cooling groove. A water outlet pipe is arranged at one end of the side wall of the lower die opposite to the water inlet pipe; cooling water passes through the first heat dissipation fins and the second heat dissipation fins, so that the temperature of the cooling water can be greatly reduced, meanwhile, the cooling water is separately cooled through the separation grooves, the cooling efficiency of the cooling water is greatly improved, the effect is improved when the cooling water enters the cooling groove through the water inlet pipe for cooling subsequently, and the service life of the cooling water is prolonged. And the mold can be kept at a proper working temperature by the cooling water, so that the cooling work efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a cooling mechanism for a plastic mold. Background Art

[0002] Plastic mold is the abbreviation of a combined plastic mold used for compression molding, extrusion molding, injection molding, blow molding and low foaming molding. It mainly includes a concave mold with a variable cavity composed of a concave mold combination base plate, a concave mold assembly and a concave mold combination card plate, and a convex mold with a variable core composed of a convex mold combination base plate, a convex mold assembly, a convex mold combination card plate, a cavity truncation assembly and a side sectional combination plate. The coordinated changes of the mold convex, concave mold and auxiliary molding system can process a series of plastic parts of different shapes and sizes:

[0003] Nowadays, most plastic molds are cooled by circulating cooling water to cool the mold cavity. However, the circulating cooling water itself has poor heat dissipation effect. After circulating many times, it absorbs more heat and its own temperature rises, resulting in a gradual decrease in the cooling effect on the mold molding cavity after the cycle, resulting in a poor cooling effect. Utility Model Content

[0004] In order to solve the problem that the temperature of cooling water itself increases but cannot cool down the mold, the utility model aims to provide a cooling mechanism for a plastic mold.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a cooling mechanism of a plastic mold, comprising a lower mold, a molding cavity is formed on the upper surface of the lower mold, a cooling groove is formed inside the lower mold around the molding cavity, a water tank is formed on one side of the outer wall of the lower mold, one end of the water tank is connected with a water inlet pipe, the end of the water inlet pipe away from the water tank is connected and arranged in the cooling groove, an end of the lower mold side wall opposite to the water inlet pipe is provided with a water outlet pipe, one end of the water outlet pipe is connected to the cooling groove, the end of the water outlet pipe away from the lower mold is connected with a first cooling pipe, the lower mold side wall is provided with a first heat dissipation fin near the first cooling pipe, and the first cooling pipe runs through the first heat dissipation fin;

[0006] A transmission pipe is fixedly provided at one end of the first cooling pipe away from the water outlet pipe, a cooling box is provided on the side wall of the lower mold located above the water tank, one end of the transmission pipe away from the first cooling pipe is located above the outer wall of the cooling box and is connected with four input pipes distributed at equal intervals, one end of the input pipe away from the transmission pipe is connected and arranged in the cooling box, and a second cooling pipe is connected between the bottom of the cooling box and the water tank.

[0007] Preferably, three equally spaced partitions are fixedly provided inside the cooling box, four partition grooves are formed inside the cooling box through the partitions and the four partition grooves correspond to the input pipes, a second cooling fin is fixedly installed on the upper surface of the outer wall of the water tank, and the second cooling pipe passes through the second cooling fin.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] 1. In the utility model, the cooling water can greatly reduce its own temperature by passing through the first heat dissipation fin and the second heat dissipation fin. At the same time, the cooling water is cooled separately by the separation groove, which greatly improves the cooling efficiency of the cooling water itself, so that the cooling effect is improved when the cooling water enters the cooling groove through the water inlet pipe, so that the cooling water can keep the mold at a suitable working temperature to improve the efficiency of the cooling work;

[0010] 2. In the utility model, the fan can dissipate heat for a plurality of second heat dissipation fins, so that the second heat dissipation fins themselves are cooled, thereby improving the heat dissipation and cooling effect of the second heat dissipation fins on the second cooling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the front structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the back structure of the utility model.

[0014] Figure 3 This is a schematic diagram of the internal structure of the cooling box of the utility model.

[0015] Figure 4 This is a schematic diagram of the installation frame structure of the utility model.

[0016] In the figure: 1. lower mold; 11. molding cavity; 12. cooling trough; 13. water tank; 14. water inlet pipe; 15. water outlet pipe; 16. first cooling pipe; 17. first heat dissipation fin; 18. transmission pipe; 19. input pipe; 2. cooling box; 21. partition; 211. partition groove; 22. second cooling pipe; 23. second heat dissipation fin; 24. fan; 3. positioning plate; 31. mounting frame; 32. filter; 33. rubber sealing pad; 34. fixing bolt; 5. water pump. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example: Figure 1-4 As shown, the utility model provides a cooling mechanism for a plastic mold, comprising a lower mold 1, a molding cavity 11 is provided on the upper surface of the lower mold 1, a cooling groove 12 is provided inside the lower mold 1 around the molding cavity 11, a water tank 13 is provided on one side of the outer wall of the lower mold 1, one end of the water tank 13 is connected with a water inlet pipe 14, and the end of the water inlet pipe 14 away from the water tank 13 is connected and arranged in the cooling groove 12, an end of the side wall of the lower mold 1 opposite to the water inlet pipe 14 is provided with a water outlet pipe 15, one end of the water outlet pipe 15 is connected to the cooling groove 12, and the end of the water outlet pipe 15 away from the lower mold 1 is connected with a first cooling pipe 16, and a first heat dissipation fin 17 is installed on the side wall of the lower mold 1 near the first cooling pipe 16, and the first cooling pipe 16 runs through the first heat dissipation fin 17;

[0019] A transmission pipe 18 is fixedly provided at one end of the first cooling pipe 16 away from the water outlet pipe 15, a cooling box 2 is provided on the side wall of the lower mold 1 above the water tank 13, an end of the transmission pipe 18 away from the first cooling pipe 16 is located above the outer wall of the cooling box 2 and is connected to four input pipes 19 distributed at equal intervals, an end of the input pipe 19 away from the transmission pipe 18 is connected and arranged in the cooling box 2, and a second cooling pipe 22 is connected between the bottom of the cooling box 2 and the water tank 13.

[0020] The first cooling tube 16 and the second cooling tube 22 are both arranged in an S shape. Arranging the first cooling tube 16 and the second cooling tube 22 in an S shape can increase the flow time of cooling water, thereby increasing the heat dissipation time of cooling water.

[0021] Three equally spaced partitions 21 are fixedly provided inside the cooling box 2. Four partition grooves 211 are formed in the cooling box 2 through the partitions 21, and the four partition grooves 211 correspond to the input pipes 19. The partitions 21 can separate the cooling water in the cooling box 2 for cooling, thereby improving its cooling effect.

[0022] A second heat dissipation fin 23 is fixedly installed on the upper surface of the outer wall of the water tank 13, and the second cooling tube 22 passes through the second heat dissipation fin 23. The second heat dissipation fin 23 can dissipate heat for the cooling water passing through the second cooling tube 22. At this time, the coolant passing through the second cooling tube 22 will be cooled by the heat dissipated by the second heat dissipation fin 23 and the temperature will be reduced, so that when it subsequently enters the water tank 13 for cooling, it has a good heat dissipation and cooling effect. A vertically arranged fan 24 is fixedly provided at one end of the upper surface of the water tank 13. The fan 24 can dissipate heat for multiple second heat dissipation fins 23, so that the second heat dissipation fins 23 themselves are cooled, thereby improving the heat dissipation and cooling effect of the second heat dissipation fins 23 on the second cooling tube 22.

[0023] Water pumps 5 are provided at both the water inlet pipe 14 and the water outlet pipe 15. The water pump 5 can pump the cooling water in the water tank 13 out and input it into the cooling tank 12 through the water inlet pipe 14. At the same time, the water in the cooling tank 12 is input into the second cooling pipe 22 through the water outlet pipe 15 through the water pump 5 for cooling and heat dissipation operations.

[0024] An installation frame 31 is provided at the upper end of the water tank 13, and a filter screen 32 is provided in the installation frame 31. The filter screen 32 can filter impurities in the cooling water. A positioning plate 3 is fixedly provided at one end of the installation frame 31, and a rubber sealing gasket 33 is provided between the positioning plate 3 and the installation frame 31. Fixing bolts 34 are installed at both ends of the positioning plate 3. The rubber sealing gasket 33 can prevent water from seeping out of the water tank 13 after the installation frame 31 is installed, thereby preventing water leakage. At the same time, the fixing bolts 34 facilitate the installation of the positioning plate 3 and the installation frame 31 in the water tank 13.

[0025] Working principle: the water pump 5 pumps the cooling water in the water tank 13 and inputs it into the cooling tank 12 through the water inlet pipe 14, so that the cooling tank 12 can cool the plastic product in the molding cavity 11 on the lower mold 1. The cooling water passing through the cooling tank 12 will be discharged into the first cooling pipe 16 through the water outlet pipe 15. At this time, the cooling water passing through the first cooling pipe 16 will flow in an S shape through the first heat dissipation fins 17. The first heat dissipation fins 17 will absorb the heat attached to the cooling water in the first cooling pipe 16. At this time, the first cooling pipe 16 itself will cool down.

[0026] Subsequently, the cooling water is input into the four partition grooves 211 in the cooling box 2 through the transmission pipe 18 and the four input pipes 19, and the cooling water is separated for cooling to avoid the situation where the effect is deteriorated during centralized cooling. Subsequently, the cooling water in the partition groove 211 is input into the water tank 13 through the second cooling pipe 22. When the cooling water passes through the second cooling pipe 22, the second heat dissipation fins 23 can dissipate heat for the cooling water in the second cooling pipe 22. At this time, the cooling water passing through the second cooling pipe 22 will be cooled by the heat dissipation of the second heat dissipation fins 23, and the cooling water can be cooled by the fan 24 to cool the multiple second heat dissipation fins 23, so that the second heat dissipation fins 23 themselves are cooled, thereby improving the heat dissipation and cooling effect of the second heat dissipation fins 23 on the second cooling pipe 22 and further reducing the temperature of the cooling water.

[0027] The cooling water that enters the water tank 13 is then input into the cooling tank 12 again through the water pump 5 to cool the plastic product in the molding cavity 11 .

[0028] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A cooling mechanism for a plastic mold, comprising a lower mold (1), characterized in that: A molding cavity (11) is provided on the upper surface of the lower mold (1), a cooling groove (12) is provided inside the lower mold (1) around the molding cavity (11), a water tank (13) is provided on one side of the outer wall of the lower mold (1), one end of the water tank (13) is connected to a water inlet pipe (14), the end of the water inlet pipe (14) away from the water tank (13) is connected to the cooling groove (12), an end of the side wall of the lower mold (1) opposite to the water inlet pipe (14) is provided with a water outlet pipe (15), one end of the water outlet pipe (15) is connected to the cooling groove (12), the end of the water outlet pipe (15) away from the lower mold (1) is connected to a first cooling pipe (16), and a first heat dissipation fin (17) is installed on the side wall of the lower mold (1) near the first cooling pipe (16), and the first cooling pipe (16) passes through the first heat dissipation fin (17); A transmission pipe (18) is fixedly provided at one end of the first cooling pipe (16) away from the water outlet pipe (15); a cooling box (2) is provided on the side wall of the lower mold (1) located above the water box (13); an end of the transmission pipe (18) away from the first cooling pipe (16) is located above the outer wall of the cooling box (2) and is connected to four input pipes (19) distributed at equal intervals; an end of the input pipe (19) away from the transmission pipe (18) is connected and arranged in the cooling box (2); and a second cooling pipe (22) is connected between the bottom of the cooling box (2) and the water box (13).

2. A cooling mechanism for a plastic mold as claimed in claim 1, characterized in that: The first cooling tube (16) and the second cooling tube (22) are both arranged in an S shape.

3. A cooling mechanism for a plastic mold as claimed in claim 1, characterized in that: Three partitions (21) are fixedly arranged at equal intervals inside the cooling box (2), and four partition grooves (211) are formed in the cooling box (2) through the partitions (21), and the four partition grooves (211) correspond to the input pipes (19).

4. A cooling mechanism for a plastic mold as claimed in claim 1, characterized in that: A second heat dissipation fin (23) is fixedly mounted on the upper surface of the outer wall of the water tank (13), and the second cooling pipe (22) passes through the second heat dissipation fin (23).

5. A cooling mechanism for a plastic mold as claimed in claim 4, characterized in that: A vertically arranged fan (24) is fixedly provided at one end of the upper surface of the water tank (13).

6. A cooling mechanism for a plastic mold as claimed in claim 1, characterized in that: The water inlet pipe (14) and the water outlet pipe (15) are both provided with a water pump (5).

7. A cooling mechanism for a plastic mold as claimed in claim 1, characterized in that: An installation frame (31) is provided at the upper end of the water tank (13), and a filter screen (32) is provided in the installation frame (31).

8. A cooling mechanism for a plastic mold as claimed in claim 7, characterized in that: A positioning plate (3) is fixedly provided at one end of the installation frame (31), a rubber sealing pad (33) is provided between the positioning plate (3) and the installation frame (31), and fixing bolts (34) are installed at both ends of the positioning plate (3).

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