Injection molding machine cooling device

Abstract

The utility model relates to a kind of injection molding machine cooling device, including machine body and be located on the injection mechanism and injection mold of machine body, the outside of injection mold is equipped with inner cavity input and several injection ports, and every outside of injection mold is equipped with at least two adjacent injection ports, and the inner cavity input of injection mold is fixedly connected with the injection output end of injection mechanism;The one end of several injection ports is sequentially connected in pipeline inside injection mold, and the other end of injection port is sequentially connected in pipeline by U-shaped connecting pipe, forming circulating cooling passage.The utility model sets injection port in injection mold, and forms circulating cooling passage by pipeline connection and through U-shaped connecting pipe connection inside injection mold, so that coolant can be circulated cooling to injection mold by circulating cooling passage, and through U-shaped connecting pipe can shorten invalid cooling part, reduce energy consumption, while external injection port mode can facilitate cleaning circulating cooling pipeline.

Description

Technical Field

[0001] This utility model relates to the field of injection molding, and in particular to a cooling device for an injection molding machine. Background Technology

[0002] In injection molding, rapid and uniform cooling of the mold is crucial for ensuring product quality and production efficiency. Traditional injection molding machines typically use water or air cooling to cool the mold, but existing water cooling systems are complex and inconvenient for daily maintenance. For example, patent number CN221365702U discloses a rapid cooling device for a plastic injection molding machine, which achieves cooling by connecting multiple sets of pipes to the mold. However, this device has a complex pipe layout, and the ineffective cooling sections of the pipes are too long, resulting in high energy consumption and difficult daily maintenance. Utility Model Content

[0003] Therefore, it is necessary to provide a cooling device for injection molding machines to address the problem that traditional injection molding machine cooling systems are complex in structure and inconvenient for daily maintenance.

[0004] This utility model provides a cooling device for an injection molding machine, including a machine body, an injection molding mechanism and an injection mold mounted on the machine body. The injection mold has an inner cavity inlet and several injection ports on its outer side, and each outer side of the injection mold has at least two adjacent injection ports. The inner cavity inlet of the injection mold is fixedly connected to the injection output end of the injection molding mechanism. One end of each injection port is sequentially connected to a pipe inside the injection mold, and the other end of each injection port is sequentially connected to a pipe via a U-shaped connecting pipe to form a circulating cooling path.

[0005] In some embodiments, the injection port includes an injection inlet and an injection outlet, and the injection mold has a liquid flow channel inside that connects the injection inlet and the injection outlet on adjacent outer sides. The injection inlet and the injection outlet on the same outer side are connected by the U-shaped connecting pipe.

[0006] In some embodiments, the liquid flow channels are arranged adjacent to the inner cavity of the injection mold, and the liquid flow channels are arranged in intersecting straight lines.

[0007] In some embodiments, the diameter of the liquid flow channel is not greater than the diameter of the U-shaped connecting pipe.

[0008] In some embodiments, the outer side of the U-shaped connecting pipe is fitted with a heat insulation sleeve and a heat insulation sleeve, with the heat insulation sleeve disposed between the U-shaped connecting pipe and the heat insulation sleeve.

[0009] In some embodiments, a connector is provided between the outer end of the injection port and the U-shaped connecting tube, one end of the connector is threaded to the other end of the injection port, and the other end of the connector is interference-fitted to the U-shaped connecting tube.

[0010] In some of these embodiments, the other end of the connector is a tower-shaped structure.

[0011] In some embodiments, a nut is fixedly provided at the middle position of the connector.

[0012] In some embodiments, a fixing clip is provided at the connection between the connector and the U-shaped connecting tube, and the fixing clip is arranged around the U-shaped connecting tube.

[0013] In some embodiments, the injection molding mechanism includes a storage tank, a feed hopper, and a screw conveyor. The storage tank is located on the machine body, the discharge port of the feed hopper is fixedly connected to the feed port of the storage tank, and the output end of the screw conveyor passes through the storage tank and is fixedly connected to the inner cavity input port of the injection mold.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: By setting a liquid injection port in the injection mold and connecting the internal pipes of the injection mold with U-shaped connecting pipes to form a circulating cooling path, the coolant can circulate and cool the injection mold through the circulating cooling path. Furthermore, the U-shaped connecting pipe can shorten the ineffective cooling section and reduce energy consumption. At the same time, the external liquid injection port method makes it easy to clean the circulating cooling pipes. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the cooling device for an injection molding machine shown in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the injection mold shown in an embodiment of the present invention; Figure 3 This is a cross-sectional view of an injection mold as shown in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the U-shaped connecting pipe and connector shown in an embodiment of the present invention. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] See Figures 1 to 4 This utility model embodiment illustrates a cooling device for an injection molding machine, comprising a machine body 1, an injection molding mechanism 2, and an injection mold 3 mounted on the machine body 1. The injection mold 3 has an inner cavity inlet 31 and a plurality of injection ports 32 on its outer side, and each outer side of the injection mold 3 has at least two adjacent injection ports 32. The inner cavity inlet 31 of the injection mold 3 is fixedly connected to the injection output end of the injection molding mechanism 2. One end of the plurality of injection ports 32 is sequentially connected to the injection mold 3 through pipes, and the other end of the injection ports 32 is sequentially connected through U-shaped connecting pipes 33 to form a circulating cooling path.

[0020] In this embodiment, an inner cavity inlet 31 and multiple injection ports 32 are provided on the outside of the injection mold 3, and the injection ports 32 are connected in series by a U-shaped connecting pipe 33 to form a circulating cooling path. The dual-channel design of adjacent injection ports 32 ensures uniform flow of the cooling medium and quickly removes heat from the mold; the connection method of the U-shaped connecting pipe 33 optimizes the pipeline layout, reduces pressure loss, and improves heat exchange efficiency. This embodiment achieves precise control of mold temperature through forced circulation cooling, shortens the molding cycle, and avoids product deformation caused by local overheating, ultimately improving the dimensional stability and surface quality of the injection molded parts.

[0021] Meanwhile, due to the tendency for solid residues to accumulate in the flow channels during long-term use, the cooling effect may decrease. Therefore, in this embodiment, a liquid injection port 32 is typically provided on the outside of the injection mold 3 to facilitate cleaning of the circulating cooling passages through the liquid injection port 32.

[0022] In some embodiments, the injection port 32 includes an injection inlet 321 and an injection outlet 322. The injection mold 3 has a liquid flow channel 34 inside that connects the injection inlet 321 and the injection outlet 322 on adjacent outer sides. The injection inlet 321 and the injection outlet 322 on the same outer side are connected by the U-shaped connecting pipe 33.

[0023] In this embodiment, the cooling medium enters the internal flow channel of the mold through the injection inlet 231, absorbs heat evenly, and is discharged from the injection outlet 322. It then flows back to the next set of injection outlets 32 via the U-shaped connecting pipe 33, achieving continuous cooling. This embodiment optimizes the flow path of the cooling medium, improves heat exchange efficiency, and ensures a uniform and stable mold temperature, thereby improving the molding quality and production efficiency of the injection molded parts.

[0024] In some embodiments, the liquid flow channels 34 are arranged adjacent to the inner cavity of the injection mold 3, and the liquid flow channels 34 are arranged in a crisscrossing straight line. The adjacent and crisscrossing straight line arrangement of the liquid flow channels 34 with the mold inner cavity allows the cooling medium to uniformly cover the mold, enhancing heat exchange efficiency, ensuring uniform mold temperature, and reducing cooling time. Furthermore, the straight line arrangement of the liquid flow channels 34 facilitates cleaning and reduces the presence of difficult-to-clean pipe structures such as bends and dead angles.

[0025] In some embodiments, the diameter of the liquid flow channel 34 is not greater than the pipe diameter of the U-shaped connecting pipe 33, so as to ensure a stable flow rate of the cooling medium and uniform cooling of the mold.

[0026] In some embodiments, the outer side of the U-shaped connecting pipe 33 is fitted with a heat insulation sleeve and a heat insulation sleeve. The heat insulation sleeve is disposed between the U-shaped connecting pipe and the heat insulation sleeve to reduce the thermal impact of the external environment on the U-shaped connecting pipe 33 and maintain the temperature stability of the cooling medium when passing through the U-shaped connecting pipe 33.

[0027] In some embodiments, a connector 35 is provided between the outer end of the injection port 32 and the U-shaped connecting tube 33. One end of the connector 35 is threaded to the other end of the injection port 32, and the other end of the connector 35 is interference-fitted to the U-shaped connecting tube 33. The threaded connection ensures that the injection port 32 and the connector 35 are tightly fixed, while the interference fit achieves a leak-free connection between the connector 35 and the U-shaped connecting tube 33, enhancing sealing performance and structural stability.

[0028] In some embodiments, the other end of the connector 35 is a tower-shaped structure 351. The tower-shaped structure 351 can enhance the tightness of the interference fit with the U-shaped tube and prevent the cooling medium from leaking.

[0029] In some embodiments, a nut 352 is fixedly provided at the middle position of the connector 35 so that the connector 35 can be threadedly connected to the injection port 32.

[0030] In some embodiments, a fixing clip 36 is provided at the connection between the connector 35 and the U-shaped connecting pipe 33. The fixing clip 36 is arranged around the U-shaped connecting pipe 33 to improve the connection stability between the U-shaped connecting pipe 33 and the connector 33. The fixing clip 36 can be a hose clamp.

[0031] In some embodiments, the injection molding mechanism 2 includes a storage tank 21, a feed hopper 22, and a screw conveyor 23. The storage tank 21 is disposed on the machine body 1. The discharge port of the feed hopper 22 is fixedly connected to the feed port of the storage tank 21. The output end of the screw conveyor 23 passes through the storage tank 21 and is fixedly connected to the inner cavity input port 31 of the injection mold 3.

[0032] In this embodiment, the raw material is conveyed to the storage tank 21 via the feed hopper 22, and then evenly pushed into the inner cavity of the injection mold 3 by the screw conveyor 23 to achieve injection molding. It is understood that it may also include structures such as a heating mechanism for adding the raw material to the molten state, which will not be described in detail here.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cooling device for an injection molding machine, characterized in that, The device includes a body, an injection molding mechanism, and an injection mold mounted on the body. The injection mold has an inner cavity inlet and several injection ports on its outer side, and each outer side of the injection mold has at least two adjacent injection ports. The inner cavity inlet of the injection mold is fixedly connected to the injection output end of the injection molding mechanism. One end of each injection port is sequentially connected to a pipe inside the injection mold, and the other end of each injection port is sequentially connected to a pipe via a U-shaped connecting pipe to form a circulating cooling path.

2. The injection molding machine cooling device according to claim 1, characterized in that, The injection port includes an injection inlet and an injection outlet. The injection mold has a liquid flow channel inside that connects the injection inlet and the injection outlet on adjacent outer sides. The injection inlet and the injection outlet on the same outer side are connected by the U-shaped connecting pipe.

3. The injection molding machine cooling device according to claim 2, characterized in that, The liquid flow channels are arranged adjacent to the inner cavity of the injection mold, and the liquid flow channels are arranged in intersecting straight lines.

4. The injection molding machine cooling device according to claim 2, characterized in that, The diameter of the liquid flow channel is not greater than the diameter of the U-shaped connecting pipe.

5. The injection molding machine cooling device according to claim 1, characterized in that, The outer side of the U-shaped connecting pipe is fitted with a heat insulation sleeve and a heat insulation sleeve, with the heat insulation sleeve located between the U-shaped connecting pipe and the heat insulation sleeve.

6. The injection molding machine cooling device according to claim 1, characterized in that, A connector is provided between the outer end of the injection port and the U-shaped connecting tube. One end of the connector is threaded to the other end of the injection port, and the other end of the connector is interference-fitted to the U-shaped connecting tube.

7. The injection molding machine cooling device according to claim 6, characterized in that, The other end of the connector has a tower-shaped structure.

8. The injection molding machine cooling device according to claim 6, characterized in that, A nut is fixedly installed at the middle position of the connector.

9. The injection molding machine cooling device according to claim 6, characterized in that, A fixing clip is provided at the connection between the connector and the U-shaped connecting tube, and the fixing clip is arranged around the U-shaped connecting tube.

10. The injection molding machine cooling device according to claim 1, characterized in that, The injection molding mechanism includes a storage box, a feed hopper, and a screw conveyor. The storage box is located on the machine body. The discharge port of the feed hopper is fixedly connected to the feed port of the storage box. The output end of the screw conveyor passes through the storage box and is fixedly connected to the inner cavity input port of the injection mold.

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