A high-energy beam welding heat dissipation system and heat dissipation method for a metal thin-walled part

Abstract

The application discloses a metal thin-wall part high-energy beam welding heat dissipation system and a heat dissipation method. The system comprises a heat dissipation box body, a driven refrigeration module is arranged in the heat dissipation box body, a welding table is arranged on the surface of the heat dissipation box body, and a self-compensation heat dissipation mechanism is arranged on the two sides of the welding table. The self-compensation heat dissipation mechanism cooperates with the driven refrigeration module to perform multidirectional heat dissipation on the part. The system realizes rapid heat dissipation during part welding, enhances heat inhibition effect, and prevents the part from being deformed and invalidated due to heat during welding.

Description

Technical Field

[0001] This invention relates to the field of high-energy beam welding technology, and specifically to a heat dissipation system and method for high-energy beam welding of thin-walled metal parts. Background Technology

[0002] Currently, with the widespread application of components such as connectors, circuit breakers, contactors, and switches in aviation and aerospace, the demand for miniaturization and lightweighting of products has led to increasingly thinner wall thicknesses of product parts, which can only be connected and fastened by high-energy beam welding.

[0003] High-energy beam welding is used for thin-walled parts (0.03-0.05mm), but the welding heat is difficult to control. Problems such as thermal stress deformation, melt-through, and oxidation discoloration of the parts are difficult to control, which greatly affects the product's function and performance. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a high-energy beam welding heat dissipation system and method for thin-walled metal parts.

[0005] The present invention is achieved through the following technical solutions.

[0006] The technical solution of the present invention is as follows: a high-energy beam welding heat dissipation system for thin-walled metal parts, including a heat dissipation box, an active cooling module inside the heat dissipation box, a welding station on the surface of the heat dissipation box, and self-compensating heat dissipation mechanisms on both sides of the welding station. The self-compensating heat dissipation mechanisms work in conjunction with the active cooling module to dissipate heat from the parts in multiple directions.

[0007] Preferably, the surface of the heat sink is provided with a heat sink base plate, and the welding station is integrally connected to the middle position of the heat sink base plate.

[0008] Preferably, the self-compensating heat dissipation mechanism includes a heat sink, a flexible copper strip, a base, and a pneumatic clamping assembly. The base is slidably disposed on both sides of the heat dissipation base plate, the welding table is located between the two bases, the heat sink is fixedly installed on the base, the flexible copper strip is attached to the opposite sidewalls of the two heat sinks, and the pneumatic clamping assembly is disposed on both sides of the heat dissipation base plate. The pneumatic clamping assembly is used to push the base to move back and forth towards the welding table.

[0009] Preferably, the pneumatic clamping assembly includes a pneumatic cylinder, a push rod, and a mounting base. Mounting bases are fixedly installed on both sides of the heat dissipation base plate. The pneumatic cylinder is fixedly installed on the mounting base. The push rod is coaxially connected to the output shaft of the pneumatic cylinder. The end of the push rod away from the pneumatic cylinder is connected to the side wall of the base.

[0010] Preferably, the welding platform is provided with multiple welding stations at equal intervals, and the heat sink is provided with multiple U-shaped grooves, each U-shaped groove corresponding to one of the multiple welding stations. The opening of the U-shaped groove faces the welding station, and the flexible copper strip is attached to the inner wall of the U-shaped groove.

[0011] Preferably, the active cooling module includes a thermoelectric cooling module, a cooling water tank, and cooling pipes. The thermoelectric cooling module is installed inside the heat dissipation box, the cooling water tank is installed on the thermoelectric cooling module, and the cooling pipes are installed in the cooling water tank. The two ends of the cooling pipes are respectively connected to an inlet and an outlet.

[0012] Preferably, the heat dissipation base plate is located at the open end of the cooling water tank.

[0013] Preferably, the heat sink is made of shape memory metal.

[0014] Preferably, the cooling water tank is equipped with an air-cooled radiator, and a fan is installed on the air-cooled radiator.

[0015] In another aspect, the present invention provides a heat dissipation method for high-energy beam welding of thin-walled metal parts, comprising the following steps: S1: Place the parts at the welding station for high-energy beam welding; S2: The pneumatic cylinder pushes the push rod to move the heat sink closer to the welding table, the U-shaped groove clamps and limits the two ends of the part, and the flexible copper strip contacts the part; S3: Start the electric heating and cooling module and pass cooling water through the cooling pipe. The cooling water tank is kept at a low temperature. The fan blows to form convection. The flowing air continuously carries away the heat generated by the air-cooled radiator, while bringing in cooler air to achieve heat dissipation. S4: Uses a converging nozzle to draw in or spray gas above the welding station; simultaneously dissipates heat from the environment around the welding station.

[0016] The beneficial effects of this invention are: 1. By using an active cooling module in conjunction with a self-compensating heat dissipation mechanism to dissipate heat from multiple directions on the parts, rapid heat dissipation is achieved during the welding process of the parts, enhancing the heat suppression effect and preventing the parts from deforming or failing due to heat during welding.

[0017] 2. The heat sink and flexible copper strip are welded together. The shape memory metal expands when heated and returns to its original size, pressing the flexible copper strip to fit the welded parts, thus achieving efficient heat transfer. 3. The base is moved by a pneumatic clamping assembly to control the pneumatic clamping and separation of the heat sink and the welded parts.

[0018] 4. An active cooling module is used to effectively reduce the temperature of the heat sink and ensure that the temperature of the cooling system remains constant during long-term operation.

[0019] 4. A shrinking nozzle is adopted. The shrinking nozzle adopts a shrinking design to accelerate the cooling protective airflow and reduce the temperature of the protective gas. This allows for rapid cooling of the welding station of the parts and effectively suppresses the spread of welding heat. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This invention is mainly used to illustrate a partial structural diagram of an active cooling module; Figure 3 This is a schematic diagram of the heat dissipation base plate in this invention; Figure 4 This is a cross-sectional view of the converging nozzle in this invention; Figure 5 This is a three-dimensional structural schematic diagram of the present invention; Figure 6 This is a three-dimensional structural diagram illustrating the active cooling module of this invention.

[0021] Attached reference numerals: 1-Heat dissipation box; 2-Welding station; 3-Heat dissipation base plate; 4-Heat dissipation block; 5-Flexible copper strip; 6-Base; 7-Pneumatic cylinder; 8-Push rod; 9-Mounting seat; 10-Welding station; 11-U-shaped channel; 12-Thermoelectric refrigeration module; 13-Cooling water tank; 14-Cooling water pipe; 15-Contraction nozzle; 16-Water inlet; 17-Water outlet. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] In this embodiment, refer to Figure 1 It includes a heat dissipation box 1, an active cooling module is installed inside the heat dissipation box 1, a welding station 2 is installed on the surface of the heat dissipation box 1, and self-compensating heat dissipation mechanisms are installed on both sides of the welding station 2. The self-compensating heat dissipation mechanisms work in conjunction with the active cooling module to dissipate heat from multiple directions on the parts.

[0025] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 and Figure 6The active cooling module includes an electric heating cooling module 12, a cooling water tank 13, and a cooling pipe 14. The electric heating cooling module 12 is installed inside the heat dissipation box 1, the cooling water tank 13 is installed on the electric heating cooling module 12, and the cooling pipe 14 is installed in the cooling water tank 13. The two ends of the cooling pipe 14 are respectively connected to an inlet 16 and an outlet 17, and the inlet 16 and the outlet 17 are installed on the side wall of the cooling water tank 13.

[0026] A heat dissipation base plate 3 is fixedly installed on the surface of the heat dissipation box 1 by bolts. The welding station 2 is integrally connected to the middle position of the heat dissipation base plate 3. The heat dissipation base plate 3 is located at the opening end of the cooling water tank 13.

[0027] The cooling water tank 13 is cooled by the electric heating and cooling module 12, and cooling water is introduced into the inlet 16 and flows out from the outlet 17, forming a water cooling cycle in the cooling water tank 13. This keeps the heat sink 1 at a constant temperature. The heat sink 1 conducts heat to the heat sink base plate 3, so that the heat sink base plate 3 and the bottom of the welding station 2 are always at a low temperature, providing a basic heat dissipation environment for the welding process of the parts.

[0028] In this embodiment, refer to Figure 1 and Figure 5 The self-compensating heat dissipation mechanism includes a heat sink 4, a flexible copper strip 5, a base 6, and a pneumatic clamping assembly. The base 6 is slidably arranged on both sides of the heat dissipation base plate 3. The welding station 2 is located between the two bases 6. The heat sink 4 is integrally connected to the base 6. The heat sink 4 is made of shape memory metal and has the characteristic of restoring its initial state after heating. The flexible copper strip 5 is attached to the opposite sidewalls of the two heat sinks 4. Furthermore, multiple welding stations 10 are evenly spaced on the welding station 2. Multiple U-shaped grooves 11 are opened on the heat sink 4. The multiple U-shaped grooves 11 correspond one-to-one with the multiple welding stations 10. The opening of the U-shaped groove 11 faces the welding station 10. The flexible copper strip 5 is attached to the inner sidewall of the U-shaped groove 11. The pneumatic clamping assembly is set on both sides of the heat dissipation base plate 3. The pneumatic clamping assembly is used to push the base 6 to move back and forth towards the welding table 2. The pneumatic clamping assembly includes a pneumatic cylinder 7, a push rod 8 and a mounting base 9. Mounting bases 9 are fixedly installed on both sides of the heat dissipation base plate 3. The pneumatic cylinder 7 is fixedly installed on the mounting base 9. The push rod 8 is coaxially connected to the output shaft of the pneumatic cylinder 7. The end of the push rod 8 away from the pneumatic cylinder 7 is connected to the side wall of the base 6. A mounting hole is opened on the side wall of the base 6. The push rod 8 is installed in the mounting hole so that the pneumatic cylinder 7 can push the base 6 to move.

[0029] The pneumatic cylinder 7 is activated to push the push rod 8 to extend and retract, which in turn pushes the base 6 to move towards the welding table 2, so that the two U-shaped grooves 11 position and clamp the parts. The flexible copper strip 5 is attached to the heat sink 4. The heat sink 4 expands when heated and returns to its original size, squeezing the flexible copper strip 5 to adhere to the welding parts, achieving efficient heat transfer. At the same time, the heat sink 4 is subjected to heat conduction from the heat sink base plate 3, so that the heat sink 4 is also in a low temperature state, realizing multi-directional heat transfer and heat dissipation of the parts.

[0030] In this embodiment, (not shown in the figure) a cooling water tank 13 is provided with an air-cooled radiator, and a fan is installed on the air-cooled radiator. The fan blows in the cooling water tank 13 to form convection. The flowing air continuously carries away the heat generated by the air-cooled radiator, while replenishing the cooling water tank 13 with cooler air to achieve heat dissipation, cooling and constant temperature in the cooling water tank 13.

[0031] The working principle of this invention is as follows: The pneumatic cylinder 7 is activated to push the push rod 8 to extend and retract, which pushes the base 6 to move towards the welding table 2, so that the two U-shaped grooves 11 opposite each other position and clamp the parts. The cooling water tank 13 transfers the cooling airflow to the heat dissipation base plate 3. The heat dissipation base plate 3 conducts heat to the heat dissipation block 4, and the heat dissipation block 4 is in a low temperature constant temperature state. The flexible copper strip 5 is attached to the heat dissipation block 4. The heat dissipation block 4 expands when heated and returns to its original size, squeezing the flexible copper strip 5 to adhere to the welding parts, thereby achieving efficient heat transfer. At the same time, the heat dissipation block 4 is also kept at a low temperature state due to the heat conduction of the heat dissipation base plate 3, so as to achieve multi-directional heat transfer and heat dissipation of the parts.

[0032] A preferred embodiment of the present invention also provides a heat dissipation method for high-energy beam welding of thin-walled metal parts, comprising the following steps: S1: Place the part on welding station 10 for high-energy beam welding.

[0033] S2: The pneumatic cylinder 7 pushes the push rod 8 to move the heat sink 4 closer to the welding table 2. The U-shaped groove 11 clamps and limits the two ends of the part, and the flexible copper strip 5 comes into contact with the part.

[0034] S3: Start the electric heating and cooling module 12 and flow cooling water into the cooling pipe 14. The cooling water tank 13 is kept at a low temperature. The fan blows to form convection. The flowing air continuously carries away the heat generated by the air-cooled radiator and at the same time, cooler air is brought in to achieve heat dissipation, ensuring that the cooling box 1 is kept at a constant temperature and heat dissipation is carried out on the parts through heat conduction.

[0035] S4: Reference Figure 1 and Figure 4The gas is drawn in or sprayed above the welding station 2 using a shrink nozzle 15. The shrink nozzle 15 is designed to accelerate the cooling protective gas flow and reduce the temperature of the protective gas, thereby rapidly cooling the welding station 10 of the part, effectively suppressing the heat diffusion of welding, and simultaneously dissipating heat from the environment around the welding station 2, thus achieving multi-directional heat dissipation of the part.

[0036] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A high-energy beam welding heat dissipation system for thin-walled metal parts, characterized in that: It includes a heat dissipation box (1), an active cooling module is installed inside the heat dissipation box (1), a welding station (2) is installed on the surface of the heat dissipation box (1), and self-compensating heat dissipation mechanisms are installed on both sides of the welding station (2). The self-compensating heat dissipation mechanisms work in conjunction with the active cooling module to dissipate heat from multiple directions on the parts.

2. The high-energy beam welding heat dissipation system for thin-walled metal parts according to claim 1, characterized in that: The heat dissipation box (1) is provided with a heat dissipation base plate (3) on its surface, and the welding station (2) is integrally connected to the middle position of the heat dissipation base plate (3).

3. The high-energy beam welding heat dissipation system for thin-walled metal parts according to claim 2, characterized in that: The self-compensating heat dissipation mechanism includes a heat dissipation block (4), a flexible copper strip (5), a base (6), and a pneumatic clamping assembly. The base (6) is slidably arranged on both sides of the heat dissipation base plate (3). The welding table (2) is located between the two bases (6). The heat dissipation block (4) is fixedly installed on the base (6). The flexible copper strip (5) is attached to the opposite sidewalls of the two heat dissipation blocks (4). The pneumatic clamping assembly is arranged on both sides of the heat dissipation base plate (3). The pneumatic clamping assembly is used to push the base (6) to move back and forth towards the welding table (2).

4. The high-energy beam welding heat dissipation system for thin-walled metal parts according to claim 3, characterized in that: The pneumatic clamping assembly includes a pneumatic cylinder (7), a push rod (8), and a mounting base (9). Mounting bases (9) are fixedly installed on both sides of the heat dissipation base plate (3). The pneumatic cylinder (7) is fixedly installed on the mounting base (9). The push rod (8) is coaxially connected to the output shaft of the pneumatic cylinder (7). The end of the push rod (8) away from the pneumatic cylinder (7) is connected to the side wall of the base (6).

5. The high-energy beam welding heat dissipation system for thin-walled metal parts according to claim 3, characterized in that: The welding table (2) is provided with multiple welding stations (10) at equal intervals. The heat sink (4) is provided with multiple U-shaped grooves (11). The multiple U-shaped grooves (11) correspond one-to-one with the multiple welding stations (10). The opening of the U-shaped groove (11) faces the welding station (10). The flexible copper strip (5) is attached to the inner wall of the U-shaped groove (11).

6. The high-energy beam welding heat dissipation system for thin-walled metal parts according to claim 1, characterized in that: The active cooling module includes an electric heating cooling module (12), a cooling water tank (13), and a cooling pipe (14). The electric heating cooling module (12) is installed inside the heat dissipation box (1), the cooling water tank (13) is installed on the electric heating cooling module (12), and the cooling pipe (14) is installed in the cooling water tank (13). The two ends of the cooling pipe (14) are respectively connected to an inlet (16) and an outlet (17).

7. The high-energy beam welding heat dissipation system for thin-walled metal parts according to claim 6, characterized in that: The heat dissipation base plate (3) is located at the open end of the cooling water tank (13).

8. The high-energy beam welding heat dissipation system for thin-walled metal parts according to claim 3, characterized in that: The heat sink (4) is made of shape memory metal.

9. The high-energy beam welding heat dissipation system for thin-walled metal parts according to claim 6, characterized in that: The cooling water tank (13) is equipped with an air-cooled radiator, and a fan is installed on the air-cooled radiator.

10. A heat dissipation method for high-energy beam welding of thin-walled metal parts, characterized in that, Includes the following steps: S1: Place the part on the welding station (10) for high-energy beam welding; S2: The pneumatic cylinder (7) pushes the push rod (8) to make the heat sink (4) move closer to the welding table (2), the U-shaped groove (11) clamps the two ends of the part, and the flexible copper strip (5) contacts the part. S3: Start the electric heating and cooling module (12) and pass cooling water into the cooling pipe (14). Keep the cooling water tank (13) at a low temperature. The fan blows to form convection. The flowing air continuously carries away the heat generated by the air-cooled radiator and at the same time, it replenishes the cooler air to achieve heat dissipation. S4: Use a constricted nozzle (15) to draw in or spray gas above the welding table (2); and simultaneously dissipate heat from the environment around the welding table (2).

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