Cooling mechanism for injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to a cooling mechanism for an injection mold, which comprises an internal cooling component and an external cooling component, the internal cooling component is positioned at the bottom of the mold, the external cooling component is positioned outside the mold, and the internal cooling component is connected with the external cooling component through an external circulating pipe. The built-in cooling assembly comprises a built-in shell, a snake-shaped pipeline is installed in the built-in shell, and the snake-shaped pipeline makes contact with the outer wall of an injection molding cavity of the mold. According to the cooling mechanism for the injection mold, through organic combination of the internal cooling assembly and the external cooling assembly, the cooling efficiency of the injection mold is remarkably improved, and uniform distribution of the mold temperature is ensured. And the built-in cooling assembly directly acts on the outer wall of the injection molding cavity of the mold, so that the mold is quickly and directly cooled. The external cooling assembly further enhances the cooling effect through the heat dissipation cylinder and the water conveying pipeline of the spiral structure, the temperature of the cooling liquid is effectively reduced, and the cooling efficiency is improved.

Description

Technical Field

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

[0002] Injection molds play a crucial role in the production of thermoplastic products. However, high mold temperatures during the injection molding process have long been a key factor limiting production efficiency and product quality. High temperatures not only shorten the mold's lifespan but can also lead to quality issues such as product deformation and dimensional instability. Therefore, effective cooling of injection molds is crucial.

[0003] Traditional injection mold cooling methods mostly use a single cooling structure, which has limited cooling effect and often has the problem of uneven cooling. The present utility model is proposed in this context, and it aims to provide a cooling mechanism for injection molds. Utility Model Content

[0004] The purpose of the present invention is to provide a cooling mechanism for an injection mold, so as to solve the problem that the traditional injection mold cooling method proposed in the above background technology mostly adopts a single cooling structure, has limited cooling effect, and often has uneven cooling.

[0005] To achieve the above-mentioned object, the utility model provides a cooling mechanism for an injection mold, comprising an internal cooling component and an external cooling component, wherein the internal cooling component is located at the bottom of the mold, and the external cooling component is located at the outside of the mold. Traditional injection mold cooling methods mostly adopt a single cooling structure, which has limited cooling effect and often has uneven cooling. The internal cooling component and the external cooling component are connected by an external circulation pipe, wherein the internal cooling component comprises an internal shell, which is arranged at the bottom of the mold, and a serpentine pipe is installed inside the internal shell, and the serpentine pipe contacts the outer wall of the injection cavity of the mold. The external cooling component comprises an external shell, which is arranged on the outside of one side of the mold, and a buffer bin is installed on one side of the internal shell. A liquid inlet communicating with the buffer bin is provided on one side of the top of the external shell, and several heat dissipation tubes are connected to the top of the other side of the internal shell, and a water supply pipeline with a spiral structure is provided in the heat dissipation tube, and the bottom end of the water supply pipeline is connected to a confluence pipe, and a liquid outlet is provided on the bottom side of the external shell, and the end of the confluence pipe away from the water supply pipeline is connected to the liquid outlet.

[0006] Preferably, the external circulation pipe includes a liquid inlet pipe and a liquid outlet pipe, one end of the serpentine pipe is connected to the liquid inlet pipe, the other end of the serpentine pipe is connected to the liquid outlet pipe, the other end of the liquid inlet pipe is connected to the liquid outlet, and the other end of the liquid outlet pipe is connected to the liquid inlet.

[0007] Preferably, two support tubes are installed on the top of the serpentine pipeline, and both of the support tubes are connected to the inner cavity of the serpentine pipeline.

[0008] Preferably, a water level sensor and a temperature sensor are installed inside the buffer bin.

[0009] Preferably, a water inlet is provided at the top of the water delivery pipeline, a solenoid valve is installed on the water inlet, and the water inlet is connected to the inner top of the buffer bin.

[0010] Preferably, the height of the liquid inlet is higher than the height of the water inlet end.

[0011] Preferably, one end of the merging pipe is connected to the bottom ends of the internal water supply pipelines of several heat dissipation cylinders through multiple branch pipes.

[0012] Preferably, an air outlet fan is installed at the top of the external shell and close to the top of the heat dissipation tube, and an air inlet fan is installed at the bottom of the external shell and close to the bottom of the heat dissipation tube.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This cooling mechanism for injection molds significantly improves mold cooling efficiency and ensures uniform mold temperature distribution through the organic combination of internal and external cooling components. The internal cooling component directly acts on the outer wall of the mold's injection cavity, achieving rapid and direct cooling of the mold. The external cooling component further enhances the cooling effect through a heat sink and spiral water pipeline, effectively reducing the coolant temperature and improving cooling efficiency.

[0015] In addition, the cooling assembly is equipped with a water level sensor and a temperature sensor to monitor the coolant level and temperature in real time, ensuring stable operation of the cooling system. At the same time, the inlet and outlet fans further promote air circulation within the heat sink, enhancing the heat dissipation effect.

[0016] In summary, the cooling mechanism for injection molds of the present invention not only improves the cooling efficiency and ensures uniform distribution of mold temperature, but also improves the production quality of products and the service life of molds, meeting the industry's demand for high-quality injection molded products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the external cooling assembly in the present invention;

[0019] Figure 3This is a schematic diagram of the structure of the built-in cooling component in the present utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the serpentine pipeline in the utility model;

[0021] The meaning of each number in the figure is:

[0022] 1. Mold; 2. External cooling assembly; 21. External shell; 22. Heat sink; 221. Water pipeline; 222. Water inlet; 223. Junction pipe; 23. Liquid inlet; 24. Liquid outlet; 25. Buffer tank; 251. Water level sensor; 252. Temperature sensor; 26. Air inlet fan; 27. Air outlet fan; 3. Internal cooling assembly; 31. Internal shell; 32. Serpentine pipeline; 323. Support pipe; 4. External circulation pipe; 41. Liquid inlet pipe; 42. Liquid outlet pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The utility model provides a cooling mechanism for an injection mold, such as Figure 1-Figure 4 As shown, it includes an internal cooling component 3 and an external cooling component 2. The internal cooling component 3 is located at the bottom of the mold 1, and the external cooling component 2 is located outside one side of the mold 1. The internal cooling component 3 and the external cooling component 2 are connected through an external circulation pipe 4. The internal cooling component 3 includes an internal shell 31, which is arranged at the bottom of the mold 1. A serpentine pipe 32 is installed inside the internal shell 31, and the serpentine pipe 32 contacts the outer wall of the injection cavity of the mold 1. The external cooling component 2 includes an external shell 21. The external shell 21 It is arranged on the outside of one side of the mold 1, and a buffer bin 25 is installed on the inner side of the external shell 21. A liquid inlet 23 connected to the buffer bin 25 is provided on the top side of the external shell 21. A plurality of heat dissipation tubes 22 are connected to the top of the other side of the inner part of the external shell 21. A spiral water supply pipeline 221 is provided in the heat dissipation tube 22, and the bottom end of the water supply pipeline 221 is connected to a merging pipe 223. A liquid outlet 24 is provided on the bottom side of the external shell 21, and the end of the merging pipe 223 away from the water supply pipeline 221 is connected to the liquid outlet 24.

[0025] When in use, the cooling liquid in the buffer bin 25 flows into the water supply pipe 221, and the cooling liquid in the water supply pipe 221 flows into the serpentine pipe 32 through the confluence pipe 223. After the cooling liquid flows through the serpentine pipe 32, it takes away the heat of the injection molding chamber, and then the cooling liquid flows out from the other end of the serpentine pipe 32 through the liquid inlet 23 and enters the buffer bin 25.

[0026] In this embodiment, the external circulation pipe 4 includes a liquid inlet pipe 41 and a liquid outlet pipe 42. One end of the serpentine pipe 32 is connected to the liquid inlet pipe 41, and the other end of the serpentine pipe 32 is connected to the liquid outlet pipe 42. The other end of the liquid inlet pipe 41 is connected to the liquid outlet 24, and the other end of the liquid outlet pipe 42 is connected to the liquid inlet 23, which facilitates the circulation of the cooling liquid so that it flows between the built-in cooling component 3 and the external cooling component 2, thereby improving the cooling effect. A circulation pump is installed on the external circulation pipe 4 to control the flow rate of the circulation.

[0027] Specifically, two support tubes 323 are installed on the top of the serpentine pipeline 32, and the two support tubes 323 are both communicated with the inner cavity of the serpentine pipeline 32. The two support tubes 323 can ensure that the serpentine pipeline 32 is supported and fixed.

[0028] Furthermore, a water level sensor 251 and a temperature sensor 252 are installed inside the buffer bin 25 to facilitate detection of the temperature and water level of the water.

[0029] Furthermore, a water inlet 222 is provided at the top of the water delivery pipe 221, which is communicated with the inner top of the buffer bin 25. A solenoid valve is installed on the water inlet 222. By controlling the opening number of the solenoid valve, the opening number of the heat dissipation tube 22 can be controlled.

[0030] Furthermore, the height of the liquid inlet 23 is higher than the height of the water inlet end 222 , ensuring that the liquid enters the buffer tank 25 and then enters the heat dissipation tube 22 from the water inlet end 222 .

[0031] Furthermore, one end of the merging pipe 223 is connected to the bottom ends of the internal water supply pipes 221 of the plurality of heat dissipation tubes 22 through a plurality of branch pipes.

[0032] Furthermore, an outlet fan 27 is installed at the top of the external housing 21, near the top of the heat dissipation tube 22, and an inlet fan 26 is installed at the bottom of the external housing 21, near the bottom of the heat dissipation tube 22, to facilitate the entry of external cold air and thereby remove and discharge the heat emitted by the heat dissipation tube 22. Both the outlet fan 27 and the inlet fan 26 are in communication with the outside world.

[0033] When the cooling mechanism for injection molds of the present invention is in use, cooling liquid first enters the buffer chamber 25 through the liquid inlet 23. The water level sensor 251 and temperature sensor 252 inside the buffer chamber 25 monitor the liquid level and temperature in real time. The cooling liquid inside the buffer chamber 2 then flows through the water inlet 222, the water delivery line 221, the junction pipe 223, and the liquid inlet pipe 41 into the serpentine pipe 32. The other end of the liquid outlet pipe 42 and the external cooling liquid injection pipe are both connected to the liquid inlet 23; the external injection pipe is only opened when new cooling liquid is injected into the buffer chamber 25.

[0034] In the built-in cooling assembly 3, the serpentine pipe 32 is in close contact with the outer wall of the injection cavity of the mold 1, absorbing heat from the mold through heat exchange, thereby cooling the mold. At the same time, the support pipe 323 at the top of the serpentine pipe 32 ensures its stability.

[0035] After absorbing heat, the cooling liquid then flows out of the internal cooling assembly 3 through the liquid outlet pipe 42 and into the buffer chamber 25. The liquid in the buffer chamber 25 flows into the heat dissipation tube 22 through the water inlet 222. Within the heat dissipation tube 22, the cooling liquid flows along the spiral water supply pipe 221, further reducing the temperature. At this point, the outlet fan 27 at the top of the external housing 21 and the inlet fan 26 at the bottom begin operating, drawing cold air from outside into the heat dissipation tube 22, removing and discharging the heat.

[0036] Finally, the cooling liquid converges into the confluence pipe 223 and flows out of the external cooling assembly 2 through the liquid outlet 24. Finally, it flows through the liquid inlet pipe 41 and into the serpentine pipe 32, completing a cycle. A circulating pump installed in the external circulation pipe 4 controls the cooling liquid's circulation rate to ensure effective cooling. Adjusting the cooling effect can be achieved by controlling the number of solenoid valves on the heat sink 22 that are open.

[0037] In summary, the cooling mechanism for the injection mold of the present invention achieves efficient and uniform cooling of the injection mold 1 through the organic combination of the internal cooling component 3 and the external cooling component 2, as well as the circulation of the cooling liquid.

[0038] Finally, it should be noted that the water level sensor 251, temperature sensor 252, etc. in this embodiment, the electronic components in the above parts are all universal standard parts or parts known to technical personnel in this field, and their structures and principles can be known to technical personnel in this field through technical manuals or through conventional experimental methods. In the idle area of this device, all the above-mentioned electrical components are connected respectively through wires. The specific connection means should refer to the working sequence between the electrical components in the above-mentioned working principle to complete the electrical connection, which are all well-known technologies in this field.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling mechanism for an injection mold, comprising a built-in cooling component (3) and an external cooling component (2), characterized in that: The internal cooling component (3) is located at the bottom of the mold (1), and the external cooling component (2) is located outside one side of the mold (1). The internal cooling component (3) and the external cooling component (2) are connected via an external circulation pipe (4). The internal cooling component (3) includes an internal shell (31), which is arranged at the bottom of the mold (1). A serpentine pipe (32) is installed inside the internal shell (31), and the serpentine pipe (32) contacts the outer wall of the injection molding cavity of the mold (1). The external cooling component (2) includes an external shell (21), which is arranged on the outer wall of the mold (1). ), a buffer bin (25) is installed on one side of the internal side of the external shell (21), a liquid inlet (23) communicating with the buffer bin (25) is provided on one side of the top of the external shell (21), a plurality of heat dissipation tubes (22) are connected to the top of the other side of the internal part of the external shell (21), a spiral water supply pipeline (221) is provided in the heat dissipation tube (22), the bottom end of the water supply pipeline (221) is connected to a merging pipe (223), a liquid outlet (24) is provided on one side of the bottom of the external shell (21), and the end of the merging pipe (223) away from the water supply pipeline (221) is communicated with the liquid outlet (24).

2. The cooling mechanism for an injection mold according to claim 1, characterized in that: The external circulation pipe (4) includes a liquid inlet pipe (41) and a liquid outlet pipe (42), one end of the serpentine pipe (32) is connected to the liquid inlet pipe (41), the other end of the serpentine pipe (32) is connected to the liquid outlet pipe (42), the other end of the liquid inlet pipe (41) is connected to the liquid outlet (24), and the other end of the liquid outlet pipe (42) is connected to the liquid inlet (23).

3. The cooling mechanism for an injection mold according to claim 1, wherein: Two support tubes (323) are installed on the top of the serpentine pipeline (32), and both of the support tubes (323) are in communication with the inner cavity of the serpentine pipeline (32).

4. The cooling mechanism for an injection mold according to claim 1, wherein: A water level sensor (251) and a temperature sensor (252) are installed inside the buffer bin (25).

5. The cooling mechanism for an injection mold according to claim 1, characterized in that: A water inlet (222) is provided at the top of the water delivery pipeline (221), a solenoid valve is installed on the water inlet (222), and the water inlet (222) is in communication with the inner top of the buffer bin (25).

6. The cooling mechanism for an injection mold according to claim 5, characterized in that: The height of the liquid inlet (23) is higher than the height of the water inlet end (222).

7. The cooling mechanism for an injection mold according to claim 1, characterized in that: One end of the merging pipe (223) is respectively connected to the bottom ends of the internal water supply pipes (221) of a plurality of heat dissipation cylinders (22) through a plurality of branch pipes.

8. The cooling mechanism for an injection mold according to claim 1, characterized in that: An air outlet fan (27) is installed at the top of the external shell (21) and close to the top of the heat dissipation tube (22), and an air inlet fan (26) is installed at the bottom of the external shell (21) and close to the bottom of the heat dissipation tube (22).

Images