A dual-layer circulating water cooling device for injection molds

Abstract

This application discloses a dual-layer circulating water cooling device for injection molds, including an upper mold base and a lower mold base. Both the upper and lower mold bases have cavities inside, allowing external air to be drawn into the interior of the refrigeration chamber to contact the coolant jacket and form cold air. The cold air enters the interior of the cooling shell through the air inlet, thereby cooling the refrigeration pipes and removing heat from the water inside the refrigeration pipes, resulting in cold water entering the liquid storage tank, thus achieving a cooling circulation effect. Simultaneously, the cold air inside the refrigeration chamber enters the interior of the cooling shroud through two air outlets and an air outlet pipe. When cold air enters the cooling shroud, it lowers the temperature of the outer shell of the liquid storage tank. Due to heat conduction, the heat inside the liquid storage tank is gradually transferred to the outer shell and then dissipated into the cold air inside the cooling shroud, thereby lowering the water temperature and further cooling the water inside the liquid storage tank, improving the circulation cooling effect. Finally, the gas is discharged through the exhaust port.

Description

Technical Field

[0001] This application relates to the field of injection mold technology, and more specifically, to a dual-layer circulating water cooling device for injection molds. Background Technology

[0002] A mold is a tool that can solidify heated raw materials into products of specific shapes and sizes under the action of external force. Molds are divided into injection molds and stamping molds. Injection molds include a moving mold plate and a fixed mold plate, which have pre-opened cavities. Heated raw materials are introduced into the cavities by the injection molding machine. When the moving mold plate and the fixed mold plate are closed, the raw materials are extruded and solidified to form a product.

[0003] Most injection molds on the market are usually equipped with water cooling devices for easy demolding. However, the structure of the cooling devices is usually too simple, just circulating the coolant. After high-frequency injection molding, the temperature of the coolant will also rise, and over time the cooling effect of the coolant will be greatly reduced, resulting in a longer cooling time for the injection mold and affecting processing efficiency.

[0004] To address the aforementioned problems, this application provides a dual-layer circulating water cooling device for injection molds. Utility Model Content

[0005] One objective of this application is to provide a double-layer circulating water cooling device for injection molds, comprising an upper mold base and a lower mold base. Both the upper and lower mold bases have internal cavities, and cooling pipes are wound around the interior of each cavity. A liquid storage tank is located on one side of the lower mold base, and a pump body is mounted on the surface of the liquid storage tank. The first ends of two cooling pipes are respectively fixedly connected to second flexible hoses, and connecting pipes are fixedly connected to the two second flexible hoses. One end of the pump body is connected to the interior of the liquid storage tank, and the other end of the pump body is connected to the connecting pipe. The ends of the two cooling pipes are respectively fixedly connected to first flexible hoses. A refrigeration pipe is fixedly connected to the end of the first flexible hose furthest from the cooling pipe, and the end of the refrigeration pipe furthest from the first flexible hose is connected to the interior of the liquid storage tank. A cooling shell is located outside the two refrigeration pipes. An air inlet is located at the bottom of the cooling shell, and an exhaust outlet is located at the top of the cooling shell. A refrigeration chamber is fixedly connected to the bottom surface of the cooling shell corresponding to the air inlet. Multiple coolant jackets are detachably connected inside the refrigeration chamber, and a fan is installed at the bottom of the refrigeration chamber.

[0006] Furthermore, the two ends of the cooling pipes extend to the surfaces of the upper mold base and the lower mold base, respectively, and the connecting pipe is arranged in a "U" shape.

[0007] Furthermore, the cooling housing is fixedly connected to the outside of the liquid storage tank, and the refrigeration pipes are arranged in an "S" shape inside the cooling housing.

[0008] Furthermore, a cooling cover is fixedly connected to the lower outer side of the liquid storage tank, and an exhaust hole is provided on the lower outer side of the cooling cover. Both the refrigeration box and the cooling cover are provided with air outlets, and an air outlet pipe is fixedly connected between the refrigeration box and the cooling cover at the corresponding position of the air outlet.

[0009] Furthermore, a rectangular hole is provided on the back of the refrigeration box, and a matching rectangular plate is provided inside the rectangular hole. Limiting plates and supporting plates are symmetrically fixedly connected to the upper and lower sides of the inner surface of the rectangular plate, respectively. A fixing plate is fixedly connected to the surface of the rectangular plate. The fixing plate is connected to the refrigeration box by fixing bolts. The refrigerant jacket is provided between two adjacent limiting plates and two adjacent supporting plates.

[0010] Furthermore, the inner wall of the refrigeration box is provided with a positioning groove, and a matching positioning plate is provided inside the positioning groove. The ends of the limiting plate and the support plate away from the rectangular plate are both fixedly connected to the positioning plate.

[0011] Furthermore, the longitudinal section of the support plate is arranged in an "L" shape, the fixing plate has an insertion hole, the fixing bolt is inserted into the insertion hole, and the surface of the refrigeration box has multiple threaded grooves, the fixing bolt is threaded into the threaded grooves.

[0012] The beneficial effects of this application are:

[0013] The pump operates to draw cold water from the storage tank into the two cooling pipes via connecting pipes and two second flexible hoses, thus removing heat from the upper and lower mold bases and achieving a double-layer cooling effect. The fan draws in outside air into the refrigeration chamber, where it comes into contact with the coolant jacket to create cold air. This cold air enters the cooling shell through the air inlet, cooling the cooling pipes and removing heat from the water inside. This results in cold water entering the storage tank, achieving a cooling circulation effect. Simultaneously, cold air from inside the refrigeration chamber enters the cooling shroud through two outlets and an outlet pipe. When cold air enters the cooling shroud, it lowers the temperature of the storage tank's outer shell. Due to heat conduction, heat from the storage tank is gradually transferred to the outer shell and then dissipated into the cold air inside the cooling shroud, further lowering the water temperature and enhancing the cooling circulation effect. Finally, the gas is discharged through the exhaust port. Attached Figure Description

[0014] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2 This is a partial structural cross-sectional view of this application;

[0018] Figure 3 This is a partial structural diagram of this application;

[0019] Figure 4 For the purposes of this application Figure 3 Enlarged schematic diagram of the structure of region A in the middle.

[0020] Explanation of the labels in the diagram:

[0021] 1. Upper mold base; 2. Lower mold base; 3. First flexible hose; 4. Second flexible hose; 5. Connecting pipe; 6. Pump body; 7. Cooling cover; 8. Exhaust port; 9. Liquid storage tank; 10. Air outlet; 11. Air outlet pipe; 12. Cooling shell; 13. Refrigeration box; 14. Fan; 15. Refrigeration pipe; 16. Air inlet; 17. Rectangular hole; 18. Positioning groove; 19. Positioning plate; 20. Limiting plate; 21. Support plate; 22. Rectangular plate; 23. Fixing plate; 24. Fixing bolt. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Example:

[0026] Please see Figure 1 , Figure 2 and Figure 3This application discloses a double-layer circulating water cooling device for injection molds, including an upper mold base 1 and a lower mold base 2. Both the upper mold base 1 and the lower mold base 2 have internal cavities, with cooling pipes wound around the interior of each cavity. A liquid storage tank 9 is located on one side of the lower mold base 2. An injection pipe is fixedly connected to the top of the liquid storage tank 9, and a cover is screwed to the outside of the injection pipe. A drain pipe is fixedly connected to the back side of the liquid storage tank 9. The end of the drain pipe away from the liquid storage tank 9 passes through a cooling shroud 7 and extends to the outside of the cooling shroud 7. A valve is installed on the outside of the drain pipe. A pump body 6 is located on the surface of the liquid storage tank 9, and a mounting plate is fixedly connected to the bottom of the pump body 6. The mounting plate is fixedly attached to the outside of the cooling shroud 7. The two cooling pipes are fixedly connected, with second hoses 4 fixedly connected to their ends. Connecting pipes 5 are fixedly connected to the two second hoses 4. One end of the pump body 6 is connected to the inside of the liquid storage tank 9, and the other end of the pump body 6 is connected to the connecting pipe 5. First hoses 3 are fixedly connected to the ends of the two cooling pipes. Controlling the pump body 6 draws cold water from inside the liquid storage tank 9 into the two cooling pipes via the connecting pipe 5 and the two second hoses 4, thereby removing heat from the upper mold base 1 and lower mold base 2, achieving a double-layer cooling effect. The water inside the cooling pipes flows back to the inside of the liquid storage tank 9 via the first hose 3 and the refrigeration pipe 15, thus achieving water circulation. The control fan 14 operates, drawing outside air into the interior of the refrigeration box 13 to contact the refrigerant jacket and form cold air. This cold air enters the cooling shell 12 through the air inlet 16, cooling the refrigeration pipe 15 and removing heat from the water inside the refrigeration pipe 15, thus ensuring the water entering the liquid storage tank 9 is cold water, achieving a cooling circulation effect. The end of the first flexible hose 3 furthest from the cooling pipe is fixedly connected to the refrigeration pipe 15, and the end of the refrigeration pipe 15 furthest from the first flexible hose 3 is connected to the interior of the liquid storage tank 9. A cooling shell 12 is provided on the outer side of the two refrigeration pipes 15, and an air inlet 16 is provided at the bottom of the cooling shell 12. The top of the cooling housing 12 has an exhaust port. The bottom end of the cooling housing 12 is fixedly connected to the corresponding position of the air inlet 16. The interior of the cooling housing 13 has multiple removable coolant jackets with a rectangular structure. A fan 14 is installed at the bottom of the cooling housing 13. The two ends of the cooling pipes extend to the surfaces of the upper mold base 1 and the lower mold base 2, respectively. The connecting pipe 5 is U-shaped. The cooling housing 12 is fixedly connected to the outside of the liquid storage tank 9. The cooling pipes 15 are arranged in an S-shape inside the cooling housing 12, thereby increasing the time for the water inside the cooling pipes 15 to be cooled down and improving the cooling effect.

[0027] Please see Figure 1 and Figure 2A cooling cover 7 is fixedly connected to the lower outer side of the liquid storage tank 9. An exhaust port 8 is provided on the lower outer side of the cooling cover 7. Both the refrigeration box 13 and the cooling cover 7 are provided with air outlets 10. An exhaust pipe 11 is fixedly connected between the refrigeration box 13 and the cooling cover 7 at the corresponding position of the exhaust port 10. The cold air inside the refrigeration box 13 enters the interior of the cooling cover 7 through the cooperation of the two exhaust ports 10 and the exhaust pipe 11. When the cold air is introduced into the cooling cover 7, the cold air lowers the temperature of the outer shell of the liquid storage tank 9. Due to the heat conduction effect, the heat inside the liquid storage tank 9 will be gradually transferred to the outer shell and then dissipated into the cold air inside the cooling cover 7, thereby lowering the temperature of the water and further cooling the water inside the liquid storage tank 9, improving the effect of circulating cooling. The gas is finally discharged through the exhaust port 8.

[0028] Please see Figure 3 and Figure 4 A rectangular hole 17 is provided on the back of the refrigeration box 13. A matching rectangular plate 22 is provided inside the rectangular hole 17. Limiting plates 20 and supporting plates 21 are symmetrically fixedly connected to the upper and lower sides of the inner surface of the rectangular plate 22, respectively. A fixing plate 23 is fixedly connected to the surface of the rectangular plate 22. The fixing plate 23 is connected to the refrigeration box 13 by fixing bolts 24. The refrigerant jacket is set between two adjacent limiting plates 20 and two adjacent supporting plates 21. The limiting plates 20 play a role in limiting the upper side of the refrigerant jacket. The supporting plates 21, which have an "L" shaped structure in longitudinal section, play a role in supporting and limiting the refrigerant jacket.

[0029] Please see Figure 3 and Figure 4 The inner wall of the refrigeration box 13 has a positioning groove 18, and a matching positioning plate 19 is set inside the positioning groove 18. The positioning plate 19 serves to limit the end of the refrigerant jacket, and the positioning plate 19 is fixedly connected to the limiting plate 20 and the support plate 21. When the positioning plate 19 is dragged, it can drive the refrigerant jacket to move outward. At the same time, the positioning plate 19 inserted into the positioning groove 18 improves the stability of the refrigerant jacket installed inside the refrigeration box 13. The ends of the limiting plate 20 and the support plate 21 away from the rectangular plate 22 are both fixedly connected to the positioning plate 19. The longitudinal section of the support plate 21 is "L" shaped. The structure is designed with a fixed plate 23 having an insertion hole, into which a fixing bolt 24 is inserted. The surface of the refrigeration box 13 has multiple threaded grooves, into which the fixing bolt 24 is threaded. By screwing the fixing bolt 24 out of the threaded groove, the fixing plate 23 is released from its limiting position. The fixing plate 23 is then moved outward, allowing the refrigerant jacket located between the rectangular plate 22 and the positioning plate 19 to be extracted from the inside of the refrigeration box 13. The refrigerant jacket can then be removed and replaced between the limiting plate 20 and the support plate 21, thus facilitating the disassembly and replacement of the refrigerant jacket.

[0030] The implementation principle of this application embodiment is as follows: the pump body 6 is controlled to operate, and the cold water inside the liquid storage tank 9 is drawn into the interior of the two cooling pipes through the connecting pipe 5 and the two second hoses 4, thereby removing the heat inside the upper mold base 1 and the lower mold base 2, achieving a double-layer cooling effect. The water inside the cooling pipes flows back to the interior of the liquid storage tank 9 through the first hose 3 and the refrigeration pipe 15, thereby achieving water circulation. The fan 14 is controlled to operate, thereby drawing external air into the interior of the refrigeration box 13 to contact the coolant jacket and form cold air. The cold air enters the interior of the cooling shell 12 through the air inlet 16, thereby cooling the refrigeration pipe 15 and removing the heat from the water inside the refrigeration pipe 15, so that the water entering the liquid storage tank 9 is cold water, thereby achieving the cooling circulation effect. The gas is finally discharged through the exhaust port.

[0031] Meanwhile, the cold air inside the refrigeration box 13 enters the interior of the cooling shroud 7 through the cooperation of two air outlets 10 and air outlet pipe 11. When the cold air is introduced into the cooling shroud 7, the cold air lowers the temperature of the outer shell of the liquid storage tank 9. Due to heat conduction, the heat inside the liquid storage tank 9 will gradually be transferred to the outer shell and then dissipated into the cold air inside the cooling shroud 7, thereby lowering the temperature of the water and further cooling the water inside the liquid storage tank 9, improving the effect of circulating cooling. The gas is finally discharged through the exhaust port 8.

[0032] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and application concept of this application, should be included within the scope of protection of this application.

Claims

1. A double-layer circulating water cooling device for injection molds, comprising an upper mold base (1) and a lower mold base (2), characterized in that: Both the upper mold base (1) and the lower mold base (2) have cavities inside, and cooling pipes are wound around the inside of the cavities. A liquid storage tank (9) is provided on one side of the lower mold base (2), and a pump body (6) is provided on the surface of the liquid storage tank (9). The first ends of the two cooling pipes are respectively fixedly connected to second hoses (4), and connecting pipes (5) are fixedly connected to the two second hoses (4). One end of the pump body (6) is connected to the inside of the liquid storage tank (9), and the other end of the pump body (6) is connected to the connecting pipe (5). The ends of the two cooling pipes are respectively fixedly connected to first hoses (3), and the first hoses (3) are far away from the liquid storage tank (9). One end of the cooling pipe is fixedly connected to a refrigeration pipe (15). The end of the refrigeration pipe (15) away from the first flexible hose (3) is connected to the interior of the liquid storage tank (9). A cooling shell (12) is provided on the outside of the two refrigeration pipes (15). An air inlet (16) is provided at the bottom of the cooling shell (12). An exhaust port is provided at the top of the cooling shell (12). A refrigeration box (13) is fixedly connected to the bottom end face of the cooling shell (12) corresponding to the air inlet (16). Multiple coolant jackets are detachably connected inside the refrigeration box (13). A fan (14) is installed at the bottom of the refrigeration box (13).

2. The double-layer circulating water cooling device for injection molds according to claim 1, characterized in that: The two cooling pipes extend to the surfaces of the upper mold base (1) and the lower mold base (2) respectively, and the connecting pipe (5) is arranged in a "U" shape.

3. The double-layer circulating water cooling device for injection molds according to claim 1, characterized in that: The cooling housing (12) is fixedly connected to the outside of the liquid storage tank (9), and the refrigeration pipe (15) is arranged in an "S" shape inside the cooling housing (12).

4. The double-layer circulating water cooling device for injection molds according to claim 1, characterized in that: A cooling cover (7) is fixedly connected to the lower outer side of the liquid storage tank (9). An exhaust hole (8) is opened on the lower outer side of the cooling cover (7). An air outlet (10) is opened on both the refrigeration box (13) and the cooling cover (7). An air outlet pipe (11) is fixedly connected between the refrigeration box (13) and the cooling cover (7) and at the corresponding position of the air outlet (10).

5. The double-layer circulating water cooling device for injection molds according to claim 1, characterized in that: The back of the refrigeration box (13) has a rectangular hole (17), and a matching rectangular plate (22) is provided inside the rectangular hole (17). Limiting plates (20) and supporting plates (21) are symmetrically fixedly connected to the upper and lower sides of the inner surface of the rectangular plate (22), respectively. A fixing plate (23) is fixedly connected to the surface of the rectangular plate (22). The fixing plate (23) is connected to the refrigeration box (13) by fixing bolts (24). The refrigerant jacket is arranged between two adjacent limiting plates (20) and two adjacent supporting plates (21).

6. The double-layer circulating water cooling device for injection molds according to claim 5, characterized in that: The inner wall of the refrigeration box (13) is provided with a positioning groove (18), and a matching positioning plate (19) is provided inside the positioning groove (18). The ends of the limiting plate (20) and the support plate (21) away from the rectangular plate (22) are both fixedly connected to the positioning plate (19).

7. A double-layer circulating water cooling device for injection molds according to claim 5, characterized in that: The longitudinal section of the support plate (21) is arranged in an "L" shape. The fixing plate (23) has an insertion hole. The fixing bolt (24) is inserted into the insertion hole. The surface of the refrigeration box (13) has multiple threaded grooves. The fixing bolt (24) is threaded into the threaded grooves.

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