Water-cooling plate fin welding jig

Abstract

The present application relates to the technical field of welding fixture, especially to a water-cooled plate fin welding fixture, which comprises a mounting seat, a positioning groove with the same size as the water-cooled bottom plate is formed on the outer wall of the mounting seat, a water tank is arranged at the bottom of the positioning groove, and a lifting platform is slidably inserted into the positioning groove. The demolding assembly is arranged, so that when demolding, the electric push rod is controlled to retract, the insertion strip frame pulls the lifting platform to move upward and reset through the reset frame, the lifting platform moves upward and resets under the joint action of the reset frame and the second spring, the water-cooled bottom plate and the fin group after welding are pushed out of the positioning groove, the resetting effect is further improved, the water-cooled bottom plate is prevented from being stuck in the positioning groove, the lifting platform pulls the piston to move upward in the cylinder body through the water pipe, the piston compresses the space inside the cylinder body, the positive pressure airflow is formed at the adsorption hole, the water-cooled bottom plate is separated from the lifting platform, and the water-cooled bottom plate is pushed to move outward of the positioning groove, and the demolding effect is further improved.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, and in particular to a welding fixture for water-cooled plate heat sinks. Background Technology

[0002] Water-cooled heat sinks are core components of new energy heat dissipation equipment and industrial temperature control devices. During their production, welding is required to seal and fix the heat sinks to the water-cooled plate substrate. The welding precision and forming quality directly determine the heat dissipation efficiency and service life of the water-cooled plate. Currently, the industry typically uses electric arc or plasma arc welding machines to weld the water-cooled base plate and fin assembly together. During welding, a special welding fixture is used to position and clamp the workpiece to ensure welding consistency. However, existing welding fixtures still have significant technical defects in actual production applications. Welding water-cooled heat sinks is a high-temperature operation. The local high temperature generated during the welding process will cause uneven thermal expansion and contraction at the contact point between the fixture and the workpiece, resulting in slight thermal deformation of the fixture structure. This thermal deformation will directly cause the fixture clamping or resetting mechanism to jam, making it impossible for the fixture to reset smoothly. This not only causes the fixture positioning accuracy to continuously decrease, affecting the welding quality of subsequent workpieces, but also causes the water-cooled heat sink workpiece to become stuck inside the fixture after welding, resulting in difficulty in demolding. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies by proposing a welding fixture for water-cooled heat sinks. This invention utilizes a demolding assembly that, during demolding, controls the retraction of an electric push rod, causing the insert holder to be pulled upwards and reset via a reset frame. Under the combined action of the reset frame and a second spring, the lifting platform is moved upwards and reset, pushing the welded water-cooled base plate and fin assembly out of the positioning groove for easy unloading, further improving the reset effect and preventing the water-cooled base plate from getting stuck in the positioning groove. The lifting platform, via a water pipe, pulls a piston upwards within a cylinder, compressing the internal space of the cylinder and creating a positive pressure airflow at the adsorption holes. This causes the water-cooled base plate to separate from the lifting platform and pushes it out of the positioning groove, further improving the demolding effect.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a welding fixture for water-cooled heat sink fins, including a mounting base, a positioning groove of the same size as the water-cooled base plate is formed on the outer wall of the mounting base, a water tank is provided at the bottom of the positioning groove, a lifting platform is slidably inserted into the positioning groove, a demolding component is provided on the lifting platform, a bracket is provided on the top outer wall of the mounting base, an electric push rod is installed on the outer wall of the bracket, an insert frame adapted to the fin assembly is installed at the output end of the electric push rod, and an anti-tilting component is provided on the insert frame. When clamping, the electric push rod drives the insert frame to move down and insert into the root of the fin assembly, while the anti-tilting component covers the top of the fin assembly. After the fin assembly is attached to the water-cooled base plate, the lifting platform and the water-cooled base plate are pressed into the positioning groove. The demolding component adsorbs the water-cooled base plate and presses the cold water in the water tank into the lifting platform. During demolding, when the insert frame moves up and resets, the anti-tilting component moves down and resets relative to the insert frame, while the insert frame drives the demolding component to move up and reset.

[0005] Preferably, the anti-tilting assembly includes a pressure plate slidably sleeved on the insert frame, a pair of sliding rods are provided on the top outer wall of the pressure plate, the sliding rods are slidably connected to the outer wall of the insert frame, a first spring is provided between the insert frame and the outer wall of the pressure plate, and a limiting groove that cooperates with the fin assembly is provided on the bottom outer wall of the pressure plate.

[0006] Preferably, the pressure plate is located below the insert frame, and the size of the limiting groove is equal to the size of the rectangular cross-section at the top of the fin assembly.

[0007] Preferably, the insert frame is located directly above the lifting platform, the thickness of each insert of the insert frame is equal to the fin gap width of the fin group, and the length of the insert is not less than the height of the fin.

[0008] Preferably, the demolding assembly includes a cylinder housed in a water tank, a heat dissipation cavity is provided in the lifting platform, a water pipe connected to the heat dissipation cavity is installed on the bottom outer wall of the lifting platform, and a piston is fixed on the outer wall of the end of the water pipe away from the lifting platform, and the piston is slidably inserted into the cylinder house.

[0009] Preferably, the top side of the lifting platform is provided with several sets of adsorption holes, and the bottom outer wall of the lifting platform is provided with an air pipe that communicates with the adsorption holes, the air pipe extending into the cylinder body.

[0010] Preferably, a second spring is provided between the outer wall of the lifting platform and the inner wall of the positioning groove, and a reset frame extending to the top of the positioning groove is provided on the top outer wall of the lifting platform, with the top end of the reset frame extending to the top of the insert frame.

[0011] Preferably, a limiting block that abuts against the lifting platform is provided on the inner side wall of the positioning groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the setting of a demolding component, controls the retraction of the electric push rod during demolding. The insert frame pulls the lifting platform upward and resets via the reset frame. Under the combined action of the reset frame and the second spring, the lifting platform moves upward and resets, pushing the welded water-cooled base plate and fin assembly out of the positioning groove for easy unloading, further improving the reset effect and preventing the water-cooled base plate from getting stuck in the positioning groove. The lifting platform pulls the piston upward in the cylinder through the water pipe. The piston compresses the internal space of the cylinder, creating a positive pressure airflow at the adsorption hole, thereby causing the water-cooled base plate to separate from the lifting platform and pushing the water-cooled base plate out of the positioning groove, further improving the demolding effect.

[0013] 2. The present invention, through the anti-tilting component, controls the retraction of the electric push rod during demolding. Under the action of the first spring, the pressure plate intercepts the fin assembly, causing the insert frame to move upward and separate from the fin assembly. After the insert frame separates from the fin assembly, the insert frame pulls the pressure plate to separate from the fin assembly through the first spring. When the insert frame drives the pressure plate to move upward and causes the slide rod to abut against the bracket, the bracket intercepts the pressure plate through the slide rod, causing the insert frame to move further upward relative to the pressure plate, thereby achieving the effect of forced demolding and preventing the fin assembly from getting stuck in the insert frame.

[0014] 3. The present invention, through the setting of the pressure plate and the insert bar frame, enables the device to adapt to the pressing operation of fin groups of different heights. Furthermore, since the higher the fins are, the greater the torque when the fins are tilted, the limiting pressing force needs to be adjusted accordingly. The higher the height of the fin group, the earlier the pressure plate comes into contact with the fin group when the insert bar frame and the pressure plate move down, resulting in a greater travel distance of the insert bar frame relative to the pressure plate. This leads to a greater degree of compression of the first spring, and consequently a greater limiting pressing force applied by the pressure plate to the top of the fin group. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure proposed in this invention; Figure 2 This is a three-dimensional sectional view of the overall structure proposed in this invention; Figure 3 This is a three-dimensional cross-sectional view of the overlay plate proposed in this invention; Figure 4 This is a three-dimensional schematic diagram of the overlay plate proposed in this invention; Figure 5 This is a three-dimensional schematic diagram of the mounting base proposed in this invention; Figure 6 This is a three-dimensional schematic diagram of the lifting platform proposed in this invention; Figure 7 This is a three-dimensional sectional view of the lifting platform proposed in this invention.

[0016] Legend: 1. Mounting base; 11. Positioning groove; 12. Water tank; 121. Cylinder body; 13. Bracket; 14. Limiting block; 2. Insertion strip bracket; 21. Electric push rod; 3. Covering plate; 31. Slide rod; 32. First spring; 33. Limiting groove; 4. Lifting platform; 41. Water pipe; 42. Heat dissipation cavity; 43. Piston; 44. Air pipe; 45. Adsorption hole; 46. Second spring; 47. Reset bracket; 5. Water-cooled base plate; 6. Fin assembly. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] See Figures 1 to 7 As shown, a water-cooled plate heat sink welding fixture includes a mounting base 1. A positioning groove 11, the same size as the water-cooled base plate 5, is formed on the outer wall of the mounting base 1. A water tank 12 is located at the bottom of the positioning groove 11. A lifting platform 4 is slidably inserted into the positioning groove 11. A demolding assembly is mounted on the lifting platform 4. A bracket 13 is mounted on the top outer wall of the mounting base 1. An electric push rod 21 is mounted on the outer wall of the bracket 13. An insertion strip bracket 2, adapted to the fin assembly 6, is mounted on the output end of the electric push rod 21. The insertion strip bracket 2 is equipped with... Equipped with an anti-tilting component, when clamped, the electric push rod 21 drives the insert frame 2 to move down and insert into the root of the fin assembly 6. At the same time, the anti-tilting component covers the top of the fin assembly 6. After the fin assembly 6 is attached to the water-cooled base plate 5, the lifting platform 4 and the water-cooled base plate 5 are pressed into the positioning groove 11. The demolding component adsorbs the water-cooled base plate 5 and presses the cold water in the water tank 12 into the lifting platform 4. When demolding, after the insert frame 2 moves up and resets, the anti-tilting component moves down and resets relative to the insert frame 2. At the same time, the insert frame 2 drives the demolding component to move up and reset. The anti-tilting assembly includes a pressure plate 3 that is slidably sleeved on the insert frame 2. A pair of sliding rods 31 are provided on the top outer wall of the pressure plate 3. The sliding rods 31 are slidably connected to the outer wall of the insert frame 2. A first spring 32 is provided between the insert frame 2 and the outer wall of the pressure plate 3. A limiting groove 33 that cooperates with the fin assembly 6 is opened on the bottom outer wall of the pressure plate 3. The pressure plate 3 is located below the insert frame 2. The size of the limiting groove 33 is equal to the size of the rectangular cross-section of the top of the fin assembly 6. The insert frame 2 is located directly above the lifting platform 4. The thickness of each insert of the insert frame 2 is equal to the width of the fin gap of the fin assembly 6, and the length of the insert is not less than the height of the fin.

[0019] It should be noted that before operation, the electric push rod 21 is retracted, which drives the insert frame 2 to move upward. The insert frame 2 drives the pressure plate 3 to move upward through the first spring 32, and the sliding rod 31 on the pressure plate 3 abuts against the bracket 13. As the electric push rod 21 retracts further, the bracket 13 intercepts the sliding rod 31, causing the insert frame 2 to move upward relative to the pressure plate 3. At the same time, the insert frame 2 abuts against the reset frame 47, and the lifting platform 4 moves upward through the reset frame 47.

[0020] During operation, the electric push rod 21 extends, causing the insert frame 2 to move downwards. The insert frame 2 then causes the pressure plate 3 to first come into contact with the fin assembly 6. The pressure plate 3 is fitted onto the top of the fin assembly 6 through the limiting groove 33, thereby limiting the fin assembly 6 and preventing it from shifting during welding. As the electric push rod 21 extends further, the insert frame 2 moves further downwards relative to the pressure plate 3, causing the first spring 32 to be compressed. This causes the pressure plate 3 to apply a limiting clamping force to the top of the fin assembly 6, straightening its posture and preventing it from tilting to the side, thus avoiding the situation where the fin assembly 6 tilts when the fins are high.

[0021] Meanwhile, the insert bar 2 is inserted into the fin gap of the fin assembly 6, so that the insert bar 2 presses the fin assembly 6 tightly from the fin root, making the fin assembly 6 fit tightly against the water-cooled base plate 5, thus preventing the fin assembly 6 from warping due to heat during the welding process. At the same time, since the thickness of each insert bar of the insert bar 2 is equal to the width of the fin gap of the fin assembly 6, the insert bar 2 fits tightly against the fin assembly 6, thereby limiting the bending tendency of the fins and preventing the fins from bending after heat deformation.

[0022] Furthermore, the length of the insert bar of the insert bar frame 2 is not less than the fin height of the fin assembly 6, so that the device can adapt to the pressing operation of fin assemblies 6 of different heights. Also, since the higher the fins are, the greater the torque when the fins are overturned, the limiting pressing force needs to be adjusted accordingly. The higher the height of the fin assembly 6, the earlier the pressing plate 3 comes into contact with the fin assembly 6 when the insert bar frame 2 and the pressing plate 3 move down, the greater the travel of the insert bar frame 2 relative to the pressing plate 3, which in turn makes the compression of the first spring 32 greater, and thus makes the limiting pressing force applied by the pressing plate 3 to the top of the fin assembly 6 greater.

[0023] The demolding assembly includes a cylinder 121 housed in a water tank 12, a heat dissipation cavity 42 inside a lifting platform 4, a water pipe 41 connected to the heat dissipation cavity 42 installed on the bottom outer wall of the lifting platform 4, a piston 43 fixed on the outer wall of the end of the water pipe 41 away from the lifting platform 4, the piston 43 being slidably inserted into the cylinder 121, several sets of suction holes 45 opened on the top side of the lifting platform 4, an air pipe 44 connected to the suction holes 45 installed on the bottom outer wall of the lifting platform 4, the air pipe 44 extending into the cylinder 121, a second spring 46 between the outer wall of the lifting platform 4 and the inner wall of the positioning groove 11, a reset frame 47 extending above the positioning groove 11 on the top outer wall of the lifting platform 4, the top of the reset frame 47 extending above the insert frame 2, and a limiting block 14 abutting against the lifting platform 4 on the inner wall of the positioning groove 11.

[0024] It should be noted that before operation, under the action of the second spring 46, the top part of the lifting platform 4 extends out from the positioning groove 11. During operation, the water-cooled base plate 5 is placed on the lifting platform 4 and aligned with the lifting platform 4. The lifting platform 4 positions the water-cooled base plate 5, thereby aligning the water-cooled base plate 5 with the positioning groove 11 and preventing the water-cooled base plate 5 from shifting during the welding process. Then, the fin assembly 6 is placed on the water-cooled base plate 5 and the fin assembly 6 is pressed by the anti-tilting component mentioned above, so that the water-cooled base plate 5 and the fin assembly 6 are tightly fitted together.

[0025] During operation, when the insert bracket 2 is inserted into the root of the fin assembly 6 and the pressure plate 3 abuts against the top of the fin assembly 6, as the electric push rod 21 extends further, the lifting platform 4 slides into the positioning groove 11 and abuts against the limiting block 14, thereby pressing the water-cooled base plate 5 and the fin assembly 6 together. Furthermore, the structure of the present invention is concentrated above the water-cooled base plate 5 and the fin assembly 6, which can reduce the obstruction of the welding path.

[0026] Furthermore, during the downward movement of the aforementioned lifting platform 4, the lifting platform 4 drives the piston 43 to move downward within the cylinder 121 via the water pipe 41. This causes the piston 43 to compress the internal space of the water tank 12, allowing the cold water in the water tank 12 to enter the heat dissipation cavity 42 within the lifting platform 4 along the water pipe 41. This achieves the effect of suppressing the thermal deformation of the water-cooled base plate 5 during the welding process, preventing the water-cooled base plate 5 from getting stuck in the positioning groove 11 after thermal deformation. At the same time, the downward movement of the piston 43 increases the internal space of the cylinder 121 located above the piston 43, creating a negative pressure. This, in turn, creates a negative pressure at the suction hole 45, which is connected to the cylinder 121 via the air pipe 44. This allows the water-cooled base plate 5 to be adsorbed and fixed through the suction hole 45 during the downward movement of the lifting platform 4, preventing the water-cooled base plate 5 from shifting and failing to smoothly enter the positioning groove 11.

[0027] During demolding, the electric push rod 21 retracts, and under the action of the first spring 32, the pressure plate 3 intercepts the fin assembly 6, causing the insert frame 2 to move upward and separate from the fin assembly 6. After the insert frame 2 separates from the fin assembly 6, the insert frame 2 pulls the pressure plate 3 to separate from the fin assembly 6 through the first spring 32. When the insert frame 2 drives the pressure plate 3 to move upward and causes the slide rod 31 to abut against the bracket 13, the bracket 13 intercepts the pressure plate 3 through the slide rod 31, causing the insert frame 2 to move further upward relative to the pressure plate 3, thereby achieving the effect of forced demolding and preventing the fin assembly 6 from getting stuck in the insert frame 2. At the same time, the insert frame 2 pulls the lifting platform 4 upward and resets through the reset frame 47. Under the combined action of the reset frame 47 and the second spring 46, the lifting platform 4 moves upward and resets, pushing the welded water-cooled base plate 5 and fin assembly 6 out of the positioning groove 11 for easy unloading, further improving the reset effect and preventing the water-cooled base plate 5 from getting stuck in the positioning groove 11.

[0028] In addition, when the lifting platform 4 moves up and resets, the lifting platform 4 pulls the piston 43 to move up in the cylinder 121 through the water pipe 41. The piston 43 compresses the internal space of the cylinder 121, so that a positive pressure airflow is formed at the adsorption hole 45, thereby causing the water-cooled base plate 5 to separate from the lifting platform 4 and pushing the water-cooled base plate 5 to move out of the positioning groove 11, further improving the demolding effect.

[0029] Working principle: During operation, the electric push rod 21 is extended, which drives the insert frame 2 to move downward. The insert frame 2 drives the pressure plate 3 to first abut against the fin assembly 6. The pressure plate 3 is fitted onto the top of the fin assembly 6 through the limiting groove 33, thereby limiting the fin assembly 6 and preventing the fin assembly 6 from shifting during welding. As the electric push rod 21 extends further, the insert frame 2 moves further downward relative to the pressure plate 3, causing the first spring 32 to be compressed. This causes the pressure plate 3 to apply a limiting clamping force to the top of the fin assembly 6, straightening the posture of the fin assembly 6 and curbing its tendency to tilt to the side, thus preventing the fin assembly 6 from tilting when the fins are high. Meanwhile, the insert bar 2 is inserted into the fin gap of the fin assembly 6, so that the insert bar 2 presses the fin assembly 6 tightly from the fin root, so that the fin assembly 6 is tightly attached to the water-cooled base plate 5, avoiding the fin assembly 6 from warping due to heat during the welding process. At the same time, since the thickness of each insert bar of the insert bar 2 is equal to the width of the fin gap of the fin assembly 6, the insert bar 2 is tightly attached to the fin assembly 6, thereby limiting the bending tendency of the fin and preventing the fin from bending after heat deformation. In addition, the length of the insert bar of the insert bar frame 2 is not less than the fin height of the fin group 6, so that the device can adapt to the pressing operation of fin groups 6 of different heights. Furthermore, since the higher the fins are, the greater the torque when the fins are overturned, the limiting pressing force needs to be adjusted accordingly. The higher the height of the fin group 6, the earlier the pressing plate 3 comes into contact with the fin group 6 when the insert bar frame 2 and the pressing plate 3 move down, the greater the travel of the insert bar frame 2 relative to the pressing plate 3, which in turn makes the compression of the first spring 32 greater, and thus makes the limiting pressing force applied by the pressing plate 3 to the top of the fin group 6 greater. When the insert bracket 2 is inserted into the root of the fin assembly 6 and the pressure plate 3 abuts against the top of the fin assembly 6, as the electric push rod 21 extends further, the lifting platform 4 slides into the positioning groove 11 and abuts against the limiting block 14, thereby pressing the water-cooled base plate 5 and the fin assembly 6 together. Furthermore, the structure of the present invention is concentrated above the water-cooled base plate 5 and the fin assembly 6, which can reduce the obstruction of the welding path. Furthermore, during the downward movement of the aforementioned lifting platform 4, the lifting platform 4 drives the piston 43 to move downward within the cylinder 121 via the water pipe 41, thereby compressing the internal space of the water tank 12. This allows the cold water in the water tank 12 to enter the heat dissipation cavity 42 within the lifting platform 4 along the water pipe 41, thus achieving the effect of suppressing the thermal deformation of the water-cooled base plate 5 during the welding process and preventing the water-cooled base plate 5 from getting stuck in the positioning groove 11 after being deformed by heat. At the same time, the downward movement of the piston 43 increases the internal space of the cylinder 121 located above the piston 43 and forms a negative pressure, which in turn forms a negative pressure at the suction hole 45 connected to the cylinder 121 via the air pipe 44. This enables the water-cooled base plate 5 to be adsorbed and fixed through the suction hole 45 during the downward movement of the lifting platform 4, preventing the water-cooled base plate 5 from shifting and failing to enter the positioning groove 11 smoothly. During demolding, the electric push rod 21 retracts. Under the action of the first spring 32, the pressure plate 3 intercepts the fin assembly 6, causing the insert frame 2 to move upward and separate from the fin assembly 6. After the insert frame 2 separates from the fin assembly 6, the insert frame 2 pulls the pressure plate 3 to separate from the fin assembly 6 through the first spring 32. When the insert frame 2 drives the pressure plate 3 to move upward and causes the slide rod 31 to abut against the bracket 13, the bracket 13 intercepts the pressure plate 3 through the slide rod 31, causing the insert frame 2 to move further upward relative to the pressure plate 3, thereby achieving the effect of forced demolding and preventing the fin assembly 6 from getting stuck in the insert frame 2. At the same time, the insert frame 2 pulls the lifting platform 4 upward and resets through the reset frame 47. Under the combined action of the reset frame 47 and the second spring 46, the lifting platform 4 moves upward and resets, pushing the welded water-cooled base plate 5 and fin assembly 6 out of the positioning groove 11 for easy unloading, further improving the reset effect and preventing the water-cooled base plate 5 from getting stuck in the positioning groove 11. In addition, when the lifting platform 4 moves up and resets, the lifting platform 4 pulls the piston 43 to move up in the cylinder 121 through the water pipe 41. The piston 43 compresses the internal space of the cylinder 121, so that a positive pressure airflow is formed at the adsorption hole 45, thereby causing the water-cooled base plate 5 to separate from the lifting platform 4 and pushing the water-cooled base plate 5 to move out of the positioning groove 11, further improving the demolding effect.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding fixture for water-cooled plate heat sinks, comprising a mounting base (1), characterized in that: The mounting base (1) has a positioning groove (11) of the same size as the water-cooled base plate (5) on its outer wall. A water tank (12) is provided at the bottom of the positioning groove (11). A lifting platform (4) is slidably inserted into the positioning groove (11). A demolding component is provided on the lifting platform (4). A bracket (13) is provided on the top outer wall of the mounting base (1). An electric push rod (21) is installed on the outer wall of the bracket (13). An insert rack (2) adapted to the fin assembly (6) is installed at the output end of the electric push rod (21). An anti-fouling device is provided on the insert rack (2). When the tilting component is clamped, the electric push rod (21) drives the insert frame (2) to move down and insert into the root of the fin assembly (6). At the same time, the anti-tilting component covers the top of the fin assembly (6). After the fin assembly (6) is attached to the water-cooled base plate (5), the lifting platform (4) and the water-cooled base plate (5) are pressed into the positioning groove (11). The demolding component adsorbs the water-cooled base plate (5) and presses the cold water in the water tank (12) into the lifting platform (4). When demolding, after the insert frame (2) moves up and resets, the anti-tilting component moves down and resets relative to the insert frame (2). At the same time, the insert frame (2) drives the demolding component to move up and reset.

2. The water-cooled plate heat sink welding fixture according to claim 1, characterized in that: The anti-tilting assembly includes a pressure plate (3) that is slidably sleeved on the insert frame (2). A pair of sliding rods (31) are provided on the top outer wall of the pressure plate (3). The sliding rods (31) are slidably connected to the outer wall of the insert frame (2). A first spring (32) is provided between the insert frame (2) and the outer wall of the pressure plate (3). A limiting groove (33) that cooperates with the fin assembly (6) is provided on the bottom outer wall of the pressure plate (3).

3. The water-cooled plate heat sink welding fixture according to claim 2, characterized in that: The pressure plate (3) is located below the insert frame (2), and the size of the limiting groove (33) is equal to the size of the rectangular cross-section at the top of the fin assembly (6).

4. The water-cooled plate heat sink welding fixture according to claim 1, characterized in that: The insert frame (2) is located directly above the lifting platform (4). The thickness of each insert of the insert frame (2) is equal to the fin gap width of the fin group (6), and the length of the insert is not less than the height of the fin.

5. The water-cooled plate heat sink welding fixture according to claim 1, characterized in that: The demolding assembly includes a cylinder (121) disposed in a water tank (12), a heat dissipation cavity (42) is provided in the lifting platform (4), a water pipe (41) connected to the heat dissipation cavity (42) is installed on the bottom outer wall of the lifting platform (4), and a piston (43) is fixed on the outer wall of the end of the water pipe (41) away from the lifting platform (4), and the piston (43) is slidably inserted into the cylinder (121).

6. The water-cooled plate heat sink welding fixture according to claim 5, characterized in that: The top side of the lifting platform (4) is provided with several sets of adsorption holes (45), and the bottom outer wall of the lifting platform (4) is provided with an air pipe (44) that is connected to the adsorption holes (45). The air pipe (44) extends into the cylinder (121).

7. The water-cooled plate heat sink welding fixture according to claim 6, characterized in that: A second spring (46) is provided between the outer wall of the lifting platform (4) and the inner wall of the positioning groove (11). A reset frame (47) extending to the top of the positioning groove (11) is provided on the top outer wall of the lifting platform (4). The top of the reset frame (47) extends to the top of the insert frame (2).

8. The water-cooled plate heat sink welding fixture according to claim 7, characterized in that: The inner wall of the positioning groove (11) is provided with a limiting block (14) that abuts against the lifting platform (4).

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