Circulating cooling equipment and aluminum profile extrusion forming die thereof

Abstract

The utility model relates to the technical field of aluminum profile processing, and discloses a circulation cooling device and an aluminum profile extrusion forming die thereof, the circulation cooling device comprises a circulation channel and a water pump, the water pump is connected with the circulation channel through a pipeline, and the circulation channel comprises a liquid inlet groove, an acceleration section and a discharge section. The liquid inlet groove, the acceleration section and the discharge section are communicated with one another and form a sandglass-shaped through groove; the flow guide structure comprises fins, two groups of fins are symmetrically arranged in the acceleration section, the two groups of fins jointly form a bundled notch, due to the design that the liquid inlet groove is gradually shrunk, liquid is extruded and accelerated due to the reduction of the flow cross section after entering the acceleration section, and the acceleration section directly faces the forming cavity of the lower die; the liquid with higher flow speed can quickly take away heat of the workpiece and the lower die in the forming cavity when flowing through the acceleration section, so that material adhesion caused by heat generated by extrusion of the workpiece is avoided, the lower die is at a relatively stable temperature, the influence of temperature difference on the precision of the extruded workpiece is reduced, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of aluminum profile processing technology, and in particular to a circulating cooling device and its aluminum profile extrusion molding die. Background Technology

[0002] During the extrusion molding of aluminum alloys, as the extrusion process continues, the temperature of the working zone of the extrusion die rises due to the drastic change in the shape of the aluminum alloy ingot and the heat generated by the friction between the aluminum material and the die. This leads to a decrease in the tempering stability and hardness of the die steel, which is one of the main reasons for the premature failure of the extrusion die. Therefore, it is necessary to cool the die.

[0003] A search revealed a prior art cooling mechanism for an aluminum profile extrusion die (publication number: CN108480413B), comprising a die and a die pad for the aluminum profile extrusion die. The die pad is provided with a cooling water channel and a nitrogen channel. The cooling water channel is connected to a cooling water circulation system, and the nitrogen channel is connected to a nitrogen inlet pipe and communicates with the extrusion cavity of the extrusion die. Both the nitrogen channel and the cooling water channel are arranged in a direction perpendicular to the axis of the extrusion die, with the nitrogen channel located on the side closer to the die and the cooling water channel located on the side farther from the die.

[0004] Existing technologies mainly cool the mold by injecting flowing coolant inside. However, because the coolant flow chamber is relatively regular and lacks guidance for the liquid, the liquid cannot effectively exchange heat with the mold during its flow into the chamber, resulting in poor cooling effect and room for optimization.

[0005] To this end, we propose a circulating cooling device and its aluminum profile extrusion molding die. Utility Model Content

[0006] The present invention mainly addresses the technical problem of lack of guidance during the liquid flow process, and provides a circulating cooling device and its aluminum profile extrusion molding die.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a circulating cooling device, comprising:

[0008] A circulation channel and a water pump, wherein the water pump is connected to the circulation channel via a pipe, and the circulation channel includes an inlet tank, an acceleration section and an outlet section, wherein the inlet tank, the acceleration section and the outlet section are interconnected and form an hourglass-shaped channel.

[0009] A flow guiding structure is provided in the acceleration section and the discharge section to guide the liquid. The flow guiding structure includes fins. Two sets of fins are symmetrically arranged in the acceleration section, and the two sets of fins together form a slot for a constriction.

[0010] In a preferred embodiment of this utility model, both the inlet tank and the outlet section are trapezoidal horizontal cross-sections, and the acceleration section is a rectangular tank located between the inlet tank and the outlet section.

[0011] In a preferred embodiment of this utility model, an inlet pipe is provided on one side of the inlet tank, and a drain pipe is provided on one side of the discharge section, which is connected to the discharge section.

[0012] In a preferred embodiment of this utility model, the fins are formed on a plate at the same height as the acceleration section, the two sets of fins are arranged in a figure-eight pattern, and the length of multiple fins decreases uniformly along the radial direction of the acceleration section.

[0013] In a preferred embodiment of the present invention, the flow guiding structure further includes a baffle block disposed within the discharge section, which is capable of diverting the liquid discharged from the acceleration section.

[0014] In a preferred embodiment of this utility model, the stop block is formed into a bullet-shaped block with a horizontal cross section. The stop block is at the same height as the discharge section, the end of the stop block near the acceleration section is triangular, and the end of the stop block away from the acceleration section is trapezoidal.

[0015] An aluminum profile extrusion molding die includes a lower die and an upper die. The top of the lower die is provided with a forming cavity for forming. The interior of the lower die is provided with all the aforementioned circulating cooling devices. A circulation channel is opened inside the lower die. The drain pipe and the inlet pipe are fixedly connected to the opposite sides of the lower die, respectively. The fins and the blocks are fixedly connected to the lower die.

[0016] Beneficial effects

[0017] This utility model provides a circulating cooling device and its aluminum profile extrusion molding die. It has the following beneficial effects:

[0018] 1. This circulating cooling equipment and its aluminum profile extrusion die, after the liquid is sent into the liquid inlet tank by the liquid inlet pipe, due to the gradually narrowing design of the liquid inlet tank, the liquid will be squeezed and accelerated as it enters the acceleration section. The acceleration section is directly opposite the forming cavity of the lower die. The liquid with a higher flow rate can quickly remove the heat of the workpiece and the lower die in the forming cavity by flowing through the acceleration section, avoiding the heat generated by the extrusion of the workpiece and causing material sticking. This keeps the lower die at a relatively stable temperature, reduces the impact of temperature difference on the accuracy of the extruded workpiece, and improves product quality.

[0019] 2. The circulating cooling equipment and its aluminum profile extrusion molding die are provided with two sets of fins. The liquid is further guided through the slots formed by the fins, which increases the contact surface area between the lower die and the liquid, thereby improving the heat exchange effect between the liquid and the lower die. This results in better temperature control of the lower die and the workpiece in the molding cavity. At the same time, the two sets of fins support the lower die below the molding cavity, ensuring the structural strength of the lower part of the molding cavity.

[0020] 3. The circulating cooling equipment and its aluminum profile extrusion mold, by setting bullet-shaped baffles, guides the liquid discharged from the acceleration section. The end of the baffles faces the flow to ensure the liquid pressure in the acceleration section, and the tail of the baffles is used to disperse the liquid and form turbulence at the tail of the baffles to promote the liquid to be discharged from the drain pipe and flow back to the water tank. Attached Figure Description

[0021] Figure 1 This is one of the overall perspective views of this utility model;

[0022] Figure 2 This is a perspective view of the lower mold of this utility model;

[0023] Figure 3 A schematic diagram showing the liquid inlet groove in the lower mold of this utility model;

[0024] Figure 4 This is a partial sectional view of the lower mold of this utility model;

[0025] Figure 5 This is a partial sectional view of the lower mold of this utility model.

[0026] Legend: 10. Lower mold; 11. Upper mold; 12. Molding cavity; 20. Liquid inlet tank; 21. Acceleration section; 22. Discharge section; 23. Fin; 24. Stop block; 25. Drain pipe; 26. Liquid inlet pipe. Detailed Implementation

[0027] A circulating cooling device and its aluminum profile extrusion die, such as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it includes:

[0028] The circulation channel and water pump are connected to the circulation channel via pipes. The circulation channel includes an inlet tank 20, an acceleration section 21, and a discharge section 22. The inlet tank 20, acceleration section 21, and discharge section 22 are interconnected and form an hourglass-shaped channel. The inlet tank 20 and discharge section 22 are both trapezoidal horizontal cross-sections, and the acceleration section 21 is a rectangular channel located between the inlet tank 20 and the discharge section 22. An inlet pipe 26 is provided on one side of the inlet tank 20, and a discharge pipe 25 is provided on one side of the discharge section 22.

[0029] In this design, a through channel is formed by interconnected inlet tank 20, acceleration section 21, and discharge section 22. Inlet pipe 26 is connected to the outlet of water pump, and discharge pipe 25 is used for drainage. Water pump can be installed in a water tank, which is equipped with a radiator for cooling the liquid. After the inlet pipe 26 sends the liquid into inlet tank 20, due to the tapered design of inlet tank 20, the liquid will be squeezed and accelerated as it enters acceleration section 21. Acceleration section 21 is directly opposite the forming cavity 12 of lower die 10. The liquid with a higher flow rate can quickly remove the heat from the workpiece in forming cavity 12 and lower die 10, avoiding heat generation from workpiece extrusion and causing material sticking. This keeps lower die 10 at a relatively stable temperature, reduces the impact of temperature difference on the accuracy of extruded workpiece, and improves product quality.

[0030] like Figure 4 and Figure 5 As shown, a flow guiding structure is set in the acceleration section 21 and the discharge section 22 to guide the liquid. The flow guiding structure includes fins 23. Two sets of fins 23 are symmetrically arranged in the acceleration section 21. The two sets of fins 23 together form a slot of a constriction. The fins 23 form a plate with the same height as the acceleration section 21. The two sets of fins 23 are distributed in a figure-eight pattern. The length of multiple fins 23 decreases uniformly along the radial direction of the acceleration section 21.

[0031] In this design, by setting two sets of fins 23, the liquid is further guided through the slots formed by the fins 23, while increasing the contact surface area between the lower mold 10 and the liquid, improving the heat exchange effect between the liquid and the lower mold 10, and providing better temperature control for the lower mold 10 and the workpiece in the molding cavity 12. At the same time, the two sets of fins 23 support the lower mold 10 below the molding cavity 12, ensuring the structural strength of the part below the molding cavity 12.

[0032] like Figure 4 and Figure 5 As shown, the flow guiding structure also includes a baffle 24, which is disposed in the discharge section 22. The baffle 24 can divert the liquid discharged from the acceleration section 21. The baffle 24 forms a bullet-shaped block with a horizontal cross section. The baffle 24 is at the same height as the discharge section 22. The end of the baffle 24 near the acceleration section 21 is triangular, and the end of the baffle 24 away from the acceleration section 21 is trapezoidal. By setting the bullet-shaped baffle 24, the liquid discharged from the acceleration section 21 is guided by the baffle 24. The head of the baffle 24 facing the flow can ensure the liquid pressure in the acceleration section 21. The tail of the baffle 24 is used to disperse the liquid and form turbulence at the tail of the baffle 24 to promote the liquid to be discharged from the drain pipe 25 and flow back into the water pool.

[0033] like Figure 1 and Figure 2As shown, an aluminum profile extrusion molding die includes a lower die 10 and an upper die 11. The top of the lower die 10 is provided with a forming cavity 12 for forming. The lower die 10 is equipped with all the aforementioned circulating cooling devices. A circulation channel is opened inside the lower die 10. The drain pipe 25 and the inlet pipe 26 are fixedly connected to the opposite sides of the lower die 10, respectively. The fins 23 and the baffles 24 are also fixedly connected to the lower die 10. By setting a circulation channel inside the lower die 10, compared with the prior art, this solution has a better guiding and dispersing effect on the liquid, a larger contact surface area between the liquid and the lower die 10, and thus a better heat exchange effect. Secondly, it also ensures the structural strength of the lower die 10 part below the forming cavity 12 and avoids deformation during the extrusion molding process.

[0034] The working principle of this utility model is as follows: After the liquid is fed into the liquid inlet tank 20 by the liquid inlet pipe 26, due to the tapered design of the liquid inlet tank 20, the liquid will be squeezed and accelerated as it enters the acceleration section 21 due to the reduction in the flow cross section. The acceleration section 21 is directly opposite the forming cavity 12 of the lower mold 10. The liquid with a higher flow rate can quickly remove the heat from the workpiece in the forming cavity 12 and the lower mold 10 by flowing through the acceleration section 21. By setting two sets of fins 23, the liquid is further guided through the constriction grooves formed by the fins 23, while increasing the lower mold... The surface area in contact with the liquid is increased to improve the heat exchange between the liquid and the lower mold 10. The lower mold 10 below the molding cavity 12 is supported by two sets of fins 23 to ensure the structural strength of the part below the molding cavity 12. The bullet-shaped baffle 24 is set to guide the liquid discharged from the acceleration section 21. The end of the baffle 24 faces the flow to ensure the liquid pressure in the acceleration section 21. The tail of the baffle 24 is used to disperse the liquid and form turbulence at the tail of the baffle 24 to promote the liquid to be discharged from the drain pipe 25 and flow back to the water pool.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A circulating cooling device, characterized in that, include: A circulation channel and a water pump, wherein the water pump is connected to the circulation channel via a pipe, the circulation channel includes an inlet tank (20), an acceleration section (21) and a discharge section (22), the inlet tank (20), the acceleration section (21) and the discharge section (22) are interconnected and form an hourglass-shaped channel; A flow guiding structure is provided in the acceleration section (21) and the discharge section (22) to guide the liquid. The flow guiding structure includes fins (23). Two sets of fins (23) are symmetrically arranged in the acceleration section (21), and the two sets of fins (23) together form a slot of a constriction.

2. The circulating cooling device according to claim 1, characterized in that: The inlet tank (20) and the outlet section (22) are both trapezoidal horizontal cross sections, and the acceleration section (21) is a rectangular tank located between the inlet tank (20) and the outlet section (22).

3. The circulating cooling device according to claim 1, characterized in that: One side of the liquid inlet tank (20) is provided with a liquid inlet pipe (26) that connects to the liquid inlet tank (20), and one side of the discharge section (22) is provided with a liquid outlet pipe (25) that connects to the discharge section (22).

4. The circulating cooling device according to claim 1, characterized in that: The fins (23) form plates of the same height as the acceleration section (21), and the two sets of fins (23) are arranged in a figure-eight pattern. The length of multiple fins (23) decreases uniformly along the radial direction of the acceleration section (21).

5. The circulating cooling device according to claim 1, characterized in that: The flow guiding structure also includes a baffle (24), which is disposed in the discharge section (22) and can divert the liquid discharged from the acceleration section (21).

6. The circulating cooling device according to claim 5, characterized in that: The stop block (24) is formed into a bullet-shaped block with a horizontal cross section. The stop block (24) is at the same height as the discharge section (22). The end of the stop block (24) near the acceleration section (21) is triangular, and the end of the stop block (24) away from the acceleration section (21) is trapezoidal.

7. An aluminum profile extrusion die, comprising a lower die (10) and an upper die (11), wherein the top of the lower die (10) is provided with a forming cavity (12) for forming, characterized in that: The lower mold (10) is provided with a circulating cooling device as described in any one of claims 1-6. A circulation channel is opened inside the lower mold (10). The drain pipe (25) and the inlet pipe (26) are fixedly connected to the opposite sides of the lower mold (10). The fins (23) and the baffles (24) are both fixedly connected to the lower mold (10).

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