Injection molding structure capable of improving injection molding efficiency

Abstract

The utility model discloses an injection molding structure that can improve injection molding efficiency, aiming at solving the problem of low heat conduction efficiency caused by the limited contact area between the water cooling pipeline and the mold in the design of the cooling structure of the traditional injection mold, which mostly adopts a single water cooling pipeline. The technical scheme is as follows: an injection molding structure that can improve injection molding efficiency, comprising a fixed mold, the fixed mold having a fixed mold cavity on one side, the fixed mold being provided with an injection molding opening communicating with the fixed mold cavity, and a water cooling channel being formed in the fixed mold on the side of the fixed mold cavity. The injection molding structure that can improve injection molding efficiency has a double cooling mode combining water cooling and air cooling, the water cooling channel enables the cooling liquid to fully contact the inside of the fixed mold and quickly take away heat, the cooling fan of the air cooling channel introduces cool air with a lower temperature from outside into the air cooling channel and makes it penetrate through the fixed mold, accelerates the air flow in the fixed mold, further enhances the heat dissipation effect, and greatly improves the cooling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and more specifically, to an injection molding structure that can improve injection molding efficiency. Background Technology

[0002] Injection molding is a process in which molten plastic is injected into a closed mold cavity under high pressure. After the plastic cools and solidifies within the cavity, a molded product matching the shape and size of the mold cavity is obtained. It mainly includes six key stages: plasticizing, mold closing, injection, pressure holding, cooling, and demolding. The cooling stage is the most time-consuming because demolding can only be performed after the product has completely cooled and solidified. Therefore, the efficiency of cooling directly determines the production cycle of a single product.

[0003] Currently, most traditional injection mold cooling structures adopt a single water cooling pipeline design. Although it can achieve the cooling function of the mold to a certain extent, the heat conduction efficiency is low due to the limited contact area between the water cooling pipeline and the mold. The process of heat transfer from the mold to the cooling medium in the cooling pipeline is relatively slow, so there is still room for improvement in cooling efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an injection molding structure that can improve injection molding efficiency. By combining water cooling and air cooling, the water cooling channel allows the coolant to fully contact the interior of the fixed mold, quickly removing heat; the cooling fan of the air cooling channel introduces cool air with a lower external temperature into the air cooling channel and allows it to pass through the fixed mold, accelerating the airflow inside the fixed mold and further enhancing the heat dissipation effect, greatly improving cooling efficiency and overall injection molding production efficiency.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an injection molding structure that can improve injection molding efficiency includes a fixed mold, a fixed mold cavity on one side of the fixed mold, an injection port communicating with the fixed mold cavity on the fixed mold, a water cooling channel on one side of the fixed mold cavity inside the fixed mold, the water cooling channel having an inlet and an outlet, and a water cooling box, a semiconductor cooling chip being installed inside the water cooling box, an inlet pipe and an outlet pipe being respectively installed at the top and bottom of the water cooling box, the inlet pipe and the outlet pipe being respectively connected to the outlet and inlet of the water cooling channel, a circulation pump being installed on the inlet pipe, and an air cooling channel being installed near the fixed mold cavity of the fixed mold, the air cooling channel penetrating the fixed mold, and a cooling fan being installed at one end of the air cooling channel.

[0006] The present invention is further configured such that: a partition is horizontally arranged inside the water-cooled box, so that the water-cooled box is divided into a first chamber and a second chamber, and a plurality of leakage holes are provided on the partition.

[0007] The present invention is further configured such that: a temperature sensing component is provided in the second chamber, and the temperature sensing component is electrically connected to the refrigeration component to control the temperature of the coolant in the water-cooled box.

[0008] The present invention is further configured such that: the temperature sensing component includes a temperature sensor, and the detection end of the temperature sensor is located in the middle of the second chamber.

[0009] The present invention is further configured such that the water cooling channel is arranged in a continuous U-shaped structure, and the inlet and outlet of the water cooling channel are located on the same side of the fixed mold.

[0010] In summary, this utility model has the following beneficial effects: By combining water cooling and air cooling, the water cooling channel allows the coolant to fully contact the interior of the mold, quickly removing heat; the air cooling channel's cooling fan introduces cool air from the outside into the air cooling channel and allows it to pass through the mold, accelerating the airflow inside the mold and further enhancing the heat dissipation effect, greatly improving cooling efficiency and overall injection molding production efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the fixed mold, water cooling channel, and air cooling channel of this utility model; Figure 2 This is a structural schematic diagram of the water cooling channel of this utility model from another angle; Figure 3 This is a schematic diagram of the internal structure of the water-cooled box of this utility model.

[0012] In the diagram: 1. Fixed mold; 2. Injection port; 3. Fixed mold cavity; 4. Water cooling channel; 5. Water cooling box; 6. Semiconductor cooling chip; 7. Water inlet pipe; 8. Water outlet pipe; 9. Circulating pump; 10. Air cooling channel; 11. Cooling fan; 12. Partition plate; 13. Drain hole; 14. Temperature sensor. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0014] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / 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 utility model based on the specific circumstances.

[0016] The present invention will now be described in detail with reference to the accompanying drawings.

[0017] Reference Figures 1-3 An injection molding structure that can improve injection molding efficiency includes a fixed mold 1, a fixed mold cavity 3 on one side of the fixed mold 1, an injection port 2 communicating with the fixed mold cavity 3 on the fixed mold 1, a movable mold used in conjunction with the fixed mold 1, a drive mechanism for driving the movable mold, a guide mechanism for guiding the movement of the movable mold, an injection cylinder and an injection screw for pushing the raw material forward inside it, and an ejection mechanism for ejecting the molded plastic product. The above structure and how the above structure achieves the molding of the plastic product are mature existing technologies and will not be described in detail here. The fixed mold 1 has a water-cooling channel 4 on one side of the fixed mold cavity 3. The water-cooling channel 4 has an inlet and an outlet, and also includes a water-cooling box 5. A semiconductor cooling chip 6 is fixedly installed inside the water-cooling box 5. It can be understood that the semiconductor cooling chip 6 has a cold end and a hot end. Therefore, the cold end of the semiconductor cooling chip 6 is located inside the water-cooling box 5, while its hot end passes through the water-cooling box 5 and is located outside the water-cooling box 5. The top and bottom of the water-cooling box 5 are respectively provided with a water inlet pipe 7 and a water outlet pipe 8. The water inlet pipe 7 and the water outlet pipe 8 are respectively connected to the outlet and inlet of the water-cooling channel 4. A circulation pump 9 is fixedly installed on the water inlet pipe 7. The fixed mold 1 has an air-cooling channel 10 near the fixed mold cavity 3. The air-cooling channel 10 passes through the fixed mold 1, and a cooling fan 11 is fixedly installed at one end of the air-cooling channel 10.

[0018] A partition 12 is fixed horizontally inside the water-cooled box 5, which divides the water-cooled box 5 into a first chamber and a second chamber. Several leakage holes 13 are opened on the partition 12. When the coolant that has completed heat exchange flows back to the water-cooled box 5 through the outlet pipe 8, it first enters the first chamber. Due to the presence of the partition 12, the sinking speed of the coolant is slowed down by the partition 12, thereby ensuring that the coolant that has been cooled in full contact with the semiconductor cooling chip 6 is preferentially discharged from the outlet pipe 8 for reuse.

[0019] The second chamber is equipped with a temperature sensing component, which is electrically connected to the refrigeration component to control the temperature of the coolant in the water-cooled box 5. The temperature sensing component monitors the temperature of the coolant in the water-cooled box 5 in real time and converts the temperature signal into an electrical signal and transmits it to the refrigeration component. The control system adjusts the working state of the refrigeration component according to the preset temperature range to maintain a constant temperature of the coolant in the water-cooled box 5.

[0020] The temperature sensing component includes a temperature sensor 14. The detection end of the temperature sensor 14 is located in the middle of the second chamber. The middle position is less affected by the circulation of coolant and local temperature fluctuations, which can more accurately obtain the actual temperature of the coolant and provide a reliable basis for subsequent precise control of the operation of the refrigeration component.

[0021] The water cooling channel 4 is designed with a continuous U-shaped structure, and the inlet and outlet of the water cooling channel 4 are located on the same side of the fixed mold 1. The U-shaped structure increases the flow path of the coolant in the mold, thereby increasing the contact time and contact area between the coolant and the fixed mold 1 and the injection molded product in the fixed mold cavity 3. During the flow process, the coolant continuously exchanges heat with the fixed mold 1 and the product, fully absorbing heat. The uniform distribution of the U-shaped structure allows the coolant to flow relatively evenly in the fixed mold 1, cooling different parts of the fixed mold 1 and avoiding the problem of uneven local cooling. This ensures the uniformity of cooling of the injection molded product and improves the quality of the product. The fact that the inlet and outlet of the water cooling channel 4 are located on the same side of the fixed mold 1 makes the structure more compact and aesthetically pleasing, and facilitates the connection and installation of the water inlet pipe 7 and the water outlet pipe 8.

[0022] Working principle: During the injection molding process, after the molten plastic is injected into the fixed mold cavity 3, it enters the cooling stage. At this time, the coolant in the water-cooling tank 5, under the action of the circulating pump 9, enters the water-cooling channel 4 opened inside the fixed mold 1 through the water inlet pipe 7. During the flow of the coolant in the water-cooling channel 4, heat exchange occurs, quickly removing the heat from the injection molten plastic. After heat exchange, the cooled coolant, with its temperature increased, flows back into the water-cooling tank 5 through the water outlet pipe 8. In the water-cooling tank 5, the semiconductor cooling chip 6 cools the heated coolant, causing it to cool down again. It can then participate in the circulating cooling again, achieving a continuous cooling effect. At the same time, several cooling fans 11 installed in the air-cooling channel 10 are started, introducing cold air with a lower external temperature into the air-cooling channel 10 and allowing it to pass through the fixed mold 1. During the flow of the cold air, it exchanges heat with the inside of the fixed mold 1, further accelerating the dissipation of heat inside the fixed mold 1. By combining water cooling and air cooling, the water cooling channel 4 allows the coolant to fully contact the interior of the fixed mold 1, quickly removing heat; the cooling fan 11 of the air cooling channel 10 introduces cool air with a lower external temperature into the air cooling channel 10 and allows it to pass through the fixed mold 1, accelerating the airflow inside the fixed mold 1, further enhancing the heat dissipation effect, greatly improving the cooling efficiency, and improving the overall injection molding production efficiency.

[0023] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. An injection molding structure for improving injection molding efficiency, comprising a fixed mold (1), wherein one side of the fixed mold (1) has a fixed mold cavity (3), and the fixed mold (1) has an injection port (2) communicating with the fixed mold cavity (3), characterized in that: The fixed mold (1) has a water cooling channel (4) on one side of the fixed mold cavity (3). The water cooling channel (4) has an inlet and an outlet, and also includes a water cooling box (5). The water cooling box (5) is equipped with a semiconductor cooling chip (6). The top and bottom of the water cooling box (5) are respectively equipped with a water inlet pipe (7) and a water outlet pipe (8). The water inlet pipe (7) and the water outlet pipe (8) are respectively connected to the outlet and inlet of the water cooling channel (4). A circulation pump (9) is installed on the water inlet pipe (7). The fixed mold (1) has an air cooling channel (10) near the fixed mold cavity (3). The air cooling channel (10) runs through the fixed mold (1). A cooling fan (11) is installed at one end of the air cooling channel (10).

2. The injection molding structure for improving injection molding efficiency according to claim 1, characterized in that: The water-cooled box (5) is horizontally equipped with a partition (12), which divides the water-cooled box (5) into a first chamber and a second chamber. The partition (12) is provided with several leakage holes (13).

3. The injection molding structure according to claim 2, characterized in that: The second chamber is equipped with a temperature sensing component, which is electrically connected to the refrigeration component to control the temperature of the coolant in the water-cooled box (5) at a constant temperature.

4. The injection molding structure for improving injection molding efficiency according to claim 3, characterized in that: The temperature sensing component includes a temperature sensor (14), the detection end of which is located in the middle of the second chamber.

5. The injection molding structure for improving injection molding efficiency according to claim 1, characterized in that: The water cooling channel (4) is arranged in a continuous U-shaped structure, and the inlet and outlet of the water cooling channel (4) are located on the same side of the fixed mold (1).

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