Die-casting machine injection punch capable of being rapidly cooled

Abstract

The utility model relates to the technical field of die-casting machines, in particular to a die-casting machine injection punch capable of being rapidly cooled, which comprises a machine head, a cooling cavity is arranged in the machine head, a liquid inlet pipe is arranged in the middle of the machine head and communicated with the cooling cavity, a liquid discharge pipe is arranged in the middle of the machine head and communicated with the cooling cavity, and the liquid discharge pipe is communicated with the cooling cavity. A plurality of air overflow holes are formed in the middle of the machine head and communicated with the cooling cavity, a guide pipe is fixedly connected to the middle of the cooling cavity and communicated with the liquid inlet pipe, and the other end of the guide pipe faces the side, close to the working face of the machine head, of the cooling cavity. When the cooling liquid is injected into the machine head to cool the machine head, the situation that the machine head is not in sufficient contact with the cooling liquid due to residual air in the machine head is reduced, so that the influence on the cooling effect is reduced, and the cooling speed of the machine head is increased.

Description

Technical Field

[0001] This utility model relates to the field of die casting machine technology, and in particular to a die casting machine injection punch that can be rapidly cooled. Background Technology

[0002] Die casting machines are machines used for pressure casting. They produce parts and components of various complex shapes by injecting molten metal into a mold and applying high pressure to the molten metal, causing it to solidify and harden rapidly.

[0003] The injection punch is an important component of a die-casting machine, mainly used to press molten metal or plastic materials into a mold for molding. Because the injection punch generates a large amount of heat during operation, inadequate cooling can lead to excessively high temperatures, accelerating wear and damage. Therefore, a cooling system is used to cool the injection punch during operation. Currently, the common cooling method is to circulate coolant through the internal cavity of the injection punch. However, after the coolant enters the internal cavity, air residue can easily remain, preventing sufficient contact between the coolant and the inner wall of the injection punch, thus affecting the cooling rate. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution: It includes a compressor head, with a cooling chamber inside the compressor head. A liquid inlet pipe is located in the middle of the compressor head and communicates with the cooling chamber. A drain pipe is also located in the middle of the compressor head and communicates with the cooling chamber. Multiple vent holes are located in the middle of the compressor head and communicate with the cooling chamber. Through this structure, when coolant is injected into the compressor head to cool it, the insufficient contact between the compressor head and the coolant caused by residual air inside the compressor head can be reduced, thereby reducing the impact on the cooling effect and improving the cooling speed of the compressor head.

[0005] As an improvement to the above technical solution, a conduit is fixedly connected to the middle of the cooling chamber. The conduit is connected to the liquid inlet pipe, and the other end of the conduit is set towards the side of the cooling chamber near the working surface of the machine head. With the above structure, the coolant can first cool the area near the working surface of the machine head with a higher temperature, and then cool the other areas with a lower temperature, so that the working surface of the machine head can be cooled down quickly and the cooling effect can be improved.

[0006] As an improvement to the above technical solution, multiple fins are fixedly connected to the middle of the cooling cavity. The multiple fins are arranged in a circumferential array. By increasing the contact area between the coolant and the object being cooled, the heat exchange effect is improved, and the cooling speed of the machine head is further improved.

[0007] As an improvement to the above technical solution, a heat insulation plate is fixed to the side wall of the machine head. The thermal conductivity of the heat insulation plate material is lower than that of the machine head material. The heat insulation plate is set on the working surface of the machine head. Through the above structure, the heat absorbed by the machine head per unit time is reduced, thereby enabling the machine head to cool down more quickly during the cooling process.

[0008] As an improvement to the above technical solution, the side wall of the heat insulation plate is provided with a groove. The groove is located on the side of the heat insulation plate facing the machine head. Through the above structure, the temperature rise of the machine head becomes slower, thereby reducing the initial temperature of the machine head when receiving coolant cooling, and enabling the machine head to complete cooling more quickly.

[0009] As an improvement to the above technical solution, a heat exchange groove is provided on the side wall of the cooling chamber. The heat exchange groove is located on the side of the cooling chamber close to the working surface of the machine head. Through the above structure, the contact area between the coolant and the machine head is further increased, and the heat exchange effect and the cooling speed of the machine head are further improved.

[0010] As an improvement to the above technical solution, an annular groove is provided in the middle of the machine head, and the end of the overflow hole is located in the middle of the annular groove. Through the above structure, the coolant can come into contact with the outer wall of the machine head, further increasing the contact area between the coolant and the machine head, and further improving the heat exchange effect and the cooling speed of the machine head.

[0011] The beneficial effects of this invention are as follows: When injecting coolant into the machine head to cool it down, it can reduce the occurrence of insufficient contact between the machine head and the coolant caused by residual air inside the machine head, thereby reducing the impact on the cooling effect, improving the cooling speed of the machine head, and allowing the coolant to preferentially cool the working surface of the machine head with a higher temperature before cooling the other lower temperature areas, so that the working surface of the machine head can be cooled down quickly and the cooling effect can be improved. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the present utility model;

[0013] Figure 2 This is a schematic diagram of the cooling cavity structure in this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the fin in this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the heat insulation plate in this utility model.

[0016] Reference numerals: 1. Head; 12. Cooling chamber; 13. Liquid inlet pipe; 14. Liquid outlet pipe; 15. Vent hole; 2. Guide tube; 3. Fin; 4. Heat insulation plate; 5. Groove; 6. Heat exchange tank; 7. Annular groove. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0018] Please see Figure 1-3 This utility model provides a technical solution: a die-casting machine injection punch with rapid cooling, including a die head 1, a cooling chamber 12 inside the die head 1, a liquid inlet pipe 13 in the middle of the die head 1 communicating with the cooling chamber 12, a liquid outlet pipe 14 in the middle of the die head 1 communicating with the cooling chamber 12, and multiple vent holes 15 in the middle of the die head 1 communicating with the cooling chamber 12.

[0019] In this embodiment, during operation, coolant is injected into the cooling chamber 12 through the inlet pipe 13. The coolant gradually fills the cooling chamber 12. At this time, some of the air inside the cooling chamber 12 is directly discharged through the inlet pipe 13, while the other part of the overflowing air is discharged into the cooling chamber 12 through multiple vent holes 15, so that the cooling chamber 12 can be filled with coolant. With the above structure, when injecting coolant into the machine head 1 to cool the machine head 1, the situation of insufficient contact between the machine head 1 and the coolant caused by residual air inside the machine head 1 can be reduced, thereby reducing the impact on the cooling effect and improving the cooling speed of the machine head 1.

[0020] For details, please refer to Figure 1-3 A conduit 2 is fixedly connected to the middle of the cooling chamber 12. The conduit 2 is connected to the liquid inlet pipe 13, and the other end of the conduit 2 is positioned towards the side of the cooling chamber 12 closest to the working surface of the machine head 1.

[0021] In this embodiment, during operation, the coolant enters the cooling chamber 12 through the conduit 2 and is sprayed onto the side of the cooling chamber 12 closest to the working surface of the machine head 1. Since the temperature of the newly injected coolant is at its lowest point, and the temperature of the machine head 1 is higher closer to the working surface, there is less heat exchange between the coolant and other parts of the machine head 1 during the flow of the coolant through the conduit 2. Before the coolant is sprayed onto the side wall of the cooling chamber 12 with a higher temperature, the temperature of the coolant will not increase too much. The large temperature difference allows the low-temperature coolant to exchange heat quickly with the high-temperature side wall of the cooling chamber 12, thereby increasing the cooling speed of the working surface of the machine head 1. Through the above structure, the coolant can preferentially cool the area near the high-temperature working surface of the machine head 1, and then cool the other areas with lower temperatures, so that the working surface of the machine head 1 can be cooled down quickly, improving the cooling effect.

[0022] For details, please refer to Figure 1-3 Multiple fins 3 are fixedly connected to the center of the cooling cavity 12, and the multiple fins 3 are arranged in a circumferential array.

[0023] In this embodiment, during operation, the heat of the head 1 is conducted to multiple fins 3. After the coolant enters the interior of the cooling chamber 12, the coolant comes into contact with the surface of the multiple fins 3 and exchanges heat. By increasing the contact area between the coolant and the object being cooled, the heat exchange effect is improved, and the cooling speed of the head 1 is further improved.

[0024] For details, please refer to Figure 1-4 A heat insulation plate 4 is fixedly connected to the side wall of the machine head 1. The thermal conductivity of the heat insulation plate 4 is lower than that of the material of the machine head 1. The heat insulation plate 4 is disposed on the working surface of the machine head 1.

[0025] In this embodiment, during operation, when the machine head 1 comes into contact with the high-temperature molten metal, heat exchange occurs between the machine head 1 and the high-temperature molten metal. The amount of heat received by the machine head 1 mainly depends on the thermal conductivity between the two. By fixing the heat insulation plate 4 to the working surface of the machine head 1, the direct contact area between the machine head 1 and the molten metal is reduced, and the remaining part is replaced by the heat insulation plate 4 to contact the molten metal. Since the thermal conductivity of the heat insulation plate 4 is lower than that of the machine head 1, the amount of heat conducted from the molten metal to the machine head 1 through the heat insulation plate 4 is less than the amount of heat conducted from the direct contact between the molten metal and the machine head 1. This reduces the amount of heat absorbed by the machine head 1 per unit time, thereby enabling the machine head 1 to cool down more quickly during the cooling process.

[0026] For details, please refer to Figure 1-4 The heat insulation plate 4 has a groove 5 on its side wall, and the groove 5 is located on the side of the heat insulation plate 4 facing the machine head 1.

[0027] In this embodiment, since the heat transfer efficiency of gas is much lower than that between solids, when heat is transferred between the heat insulation plate 4 and the head 1, the large amount of heat absorbed by the heat insulation plate 4 cannot be transferred to the head 1 in time due to the setting of the groove 5, which makes the temperature rise of the head 1 slower. This reduces the initial temperature of the head 1 when it receives coolant cooling, allowing the head 1 to complete cooling more quickly.

[0028] For details, please refer to Figure 1-4 The cooling chamber 12 has a heat exchange groove 6 on its side wall, and the heat exchange groove 6 is located on the side of the cooling chamber 12 near the working surface of the machine head 1.

[0029] In this embodiment, after the coolant is injected into the cooling chamber 12, some of the coolant will enter the heat exchange tank 6, thereby further increasing the contact area between the coolant and the head 1, and further improving the heat exchange effect and the cooling speed of the head 1.

[0030] For details, please refer to Figure 1-3 The machine head 1 has an annular groove 7 in the middle, and the end of the overflow hole 15 is located in the middle of the annular groove 7.

[0031] In this embodiment, the above structure allows the coolant to come into contact with the outer wall of the compressor head 1, further increasing the contact area between the coolant and the compressor head 1, and further improving the heat exchange effect and the cooling speed of the compressor head 1.

[0032] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A rapidly coolable die casting machine injection ram comprising a head (1) characterised in that: The interior of the machine head (1) is provided with a cooling cavity (12), the middle of the machine head (1) is provided with a liquid inlet pipe (13), the liquid inlet pipe (13) is communicated with the cooling cavity (12), the middle of the machine head (1) is provided with a liquid outlet pipe (14), the liquid outlet pipe (14) is communicated with the cooling cavity (12), the middle of the machine head (1) is provided with a plurality of gas overflow holes (15), and the plurality of gas overflow holes (15) are communicated with the cooling cavity (12).

2. A rapidly-coolable die casting machine injection ram according to claim 1, characterized in that: The middle of the cooling cavity (12) is fixedly connected with a catheter (2), the catheter (2) is communicated with the liquid inlet pipe (13), and the other end of the catheter (2) is arranged on the side of the working surface of the machine head (1) close to the cooling cavity (12).

3. A rapidly-coolable die casting machine injection ram according to claim 1, characterized in that: The middle of the cooling cavity (12) is fixedly connected with a plurality of fins (3), and the plurality of fins (3) are arranged in a circumferential array.

4. A rapidly-coolable die casting machine injection ram in accordance with claim 1 wherein: The side wall of the machine head (1) is fixedly connected with a heat insulation plate (4), the thermal conductivity coefficient of the material of the heat insulation plate (4) is lower than that of the material of the machine head (1), and the heat insulation plate (4) is arranged on the working surface of the machine head (1).

5. A rapidly-coolable die casting machine injection ram in accordance with claim 4 wherein: The side wall of the heat insulation plate (4) is provided with a groove (5), and the groove (5) is arranged on the side of the heat insulation plate (4) facing the machine head (1).

6. A rapidly-coolable die casting machine injection ram according to claim 1, characterized in that: The side wall of the cooling cavity (12) is provided with a heat exchange groove (6), and the heat exchange groove (6) is arranged on the side of the cooling cavity (12) close to the working surface of the machine head (1).

7. A rapidly-coolable die casting machine injection ram according to claim 1 wherein: The middle of the machine head (1) is provided with an annular groove (7), and the end of the gas overflow hole (15) is located in the middle of the annular groove (7).

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