Auxiliary pneumatic clamp for welding metal cooling fins

Abstract

The utility model provides an auxiliary pneumatic fixture for welding metal radiating fins, which comprises a mounting table, an air cylinder, a movable fixture and a fixed fixture, the air cylinder is connected with the movable fixture, the fixed fixture is parallel to the plate surface of the movable fixture, and the movable fixture is divided into a movable fixture upper plate at the upper end and a movable fixture lower plate at the lower end. The fixed clamp is divided into a fixed clamp upper plate at the upper end and a fixed clamp lower plate at the lower end, opposite surfaces of the movable clamp and the fixed clamp are respectively provided with a metal cooling fin placing groove, each metal cooling fin placing groove is divided into an upper area, a middle area and a lower area, and when the metal cooling fins are placed in the metal cooling fin placing grooves, the metal cooling fins are higher than the upper top edges of the movable clamp and the fixed clamp. The clamp has the advantages that the shape is matched with the height of the metal radiating fin, and clamping is guaranteed. And the pneumatic structure improves the welding efficiency. The red copper material at the upper end of the clamp is good in heat dissipation performance, resistant to corrosion, capable of reducing thermal stress deformation and more durable.

Description

Technical Field

[0001] The utility model belongs to the field of metal welding and relates to an auxiliary fixture, specifically to a laser welding, micro-beam plasma welding and TIG wire welding of metal heat sinks. Background Art

[0002] A radiator is a device for heat exchange between a high-temperature fluid and a low-temperature fluid, and is used to regulate the temperature of a single fluid. It is widely used in the fields of electronics, industrial production, aerospace, and aviation. In order to properly perform the heat dissipation function, it is very important to improve the efficiency and quality of radiator manufacturing. Currently, the mainstream connection method for heat sinks is usually gluing, but this method will cause the heat sink to be prone to aging, corrosion, cracking at the bonding point, etc. In the production of water-cooled radiators, it is necessary to perform heat sink welding processing, that is, to weld two heat sinks into a heat dissipation unit under the clamping of a fixture. However, due to the requirements of high precision and good clamping tightness during the welding process, the efficiency and quality of welding heat sinks will decrease. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a new type of welding pneumatic clamp for pneumatically clamping products and pressing welding heat sinks to effectively improve the efficiency and accuracy of laser welding.

[0004] The technical solution adopted by the utility model is as follows: a metal heat sink welding auxiliary pneumatic clamp, comprising a mounting table, a cylinder, a movable clamp, and a fixed clamp. The cylinder is fixed on the mounting table, a metal connecting rod is fixed to the cylinder telescopic head, the end of the metal connecting rod is fixed to the movable clamp, the fixed clamp and the movable clamp plate are arranged parallel to each other, the fixed clamp is installed and fixed on the table within the operating range of the welding equipment, the movable clamp is divided into an upper movable clamp plate at the upper end and a lower movable clamp plate at the lower end, and the fixed clamp is divided into an upper fixed clamp plate at the upper end and a lower fixed clamp plate at the lower end. The opposite surfaces of the movable clamp and the fixed clamp are provided with metal heat sink placement grooves, and the metal heat sink placement grooves are divided into three areas: upper, middle and lower. The upper area and the middle area are two isosceles trapezoids, and the upper bottom sides of the two isosceles trapezoids are axially symmetrical. The size of the isosceles trapezoid is set to accommodate the third straight periphery and the second straight periphery of the metal heat sink. The lower area is a trapezoid, which is used to place the second straight periphery, part of the length of the first straight periphery, and part of the length of the third straight periphery. When the metal heat sink is placed in the metal heat sink placement groove, it is higher than the upper top edge of the movable clamp and the fixed clamp.

[0005] As the preferred movable fixture upper plate and movable fixture lower plate, the fixed fixture upper plate and fixed fixture lower plate are both connected and fastened by locking bolts.

[0006] As a preferred material, the upper plate of the movable fixture and the upper plate of the fixed fixture are made of copper, and the lower plate of the movable fixture and the lower plate of the fixed fixture are made of carbon steel.

[0007] Preferably, the bottom of the fixing fixture is L-shaped, and the bottom edge is used to open the screw hole.

[0008] Preferably, the movable clamp is provided with five equidistant through holes, the holes at both ends are used to insert the metal connecting rods and be fastened with nuts, the middle three are threaded holes, which are used to install bolts to fasten the upper plate and the lower plate of the movable clamp, and the fixed clamp is provided with three equidistant through threaded holes, which are used to install bolts to fasten the upper plate and the lower plate of the fixed clamp.

[0009] The beneficial effects of the present invention are as follows: its small size makes it easy to carry and move, and its shape and high degree of coordination with the metal heat sink ensure clamping and improve welding quality. The pneumatic structure is very convenient, labor-saving, and efficient, which improves welding efficiency. The copper material at the top of the clamp has good heat dissipation and is corrosion-resistant, which reduces thermal stress deformation caused by welding heat conduction, making it more durable and improving the life of the clamp and welding accuracy. The groove for placing the metal heat sink solves the problem that the four edges of the trapezoidal metal heat sink cannot be fully fitted when clamped. The clamping part is easy to process and convenient for replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall structure of the utility model

[0011] Figure 2 Schematic diagram of the movable fixture of the utility model

[0012] Figure 3 Schematic diagram of the fixing fixture of the utility model

[0013] Figure 4 Schematic diagram of the metal heat sink of the utility model

[0014] Figure 5 This is the first straight peripheral diagram of the utility model

[0015] Figure 6 This is a schematic diagram of the second straight periphery of the utility model

[0016] Figure 7 This is a schematic diagram of the third straight periphery of the present invention. Items are numbered as follows: 1. mounting platform, 2. cylinder, 21. air pressure valve, 22. metal connecting rod, 3. movable fixture, 31. movable fixture upper plate, 32. movable fixture lower plate, 4. fixed fixture, 41. fixed fixture upper plate, 42. fixed fixture lower plate, 5. metal heat sink, 51. first straight periphery, 52. second straight periphery, 53. third straight periphery. DETAILED DESCRIPTION

[0017] In order to facilitate those skilled in the art to better understand the present technical solution, further description is provided with reference to the following drawings.

[0018] A pneumatic clamp for auxiliary welding of metal heat sinks comprises a mounting platform 1, a cylinder 2, a movable clamp 3, and a fixed clamp 4. The cylinder 2 is fixed on the mounting platform 1. The telescopic head of the cylinder 2 is fixed with a metal connecting rod 22, and the end of the metal connecting rod 22 is fixed to the movable clamp 3. The cylinder 2 is used to make the metal connecting rod 22 move back and forth. The cylinder 2 is provided with air pressure through a high-pressure vacuum pump. The cylinder 2 is provided with an air pressure valve 21, which has two pairs of air inlet valves and air outlet valves. The air pressure valve 21 is used to adjust the inlet and outlet gas flow and control the movement speed of the metal connecting rod 22. The cylinder 2 is connected to the high-pressure vacuum pump by an air pipe. The air pressure valve 21 should maintain the consistency of the inlet and outlet air flow to ensure that the movable clamp 4 and the fixed clamp 5 are clamped in parallel.

[0019] The fixed clamp 4 and the movable clamp 3 are arranged parallel to each other. The fixed clamp 4 is installed and fixed on the table within the working range of the welding equipment. The movable clamp 3 is divided into a movable clamp upper plate 31 at the upper end and a movable clamp lower plate 32 at the lower end. The fixed clamp 4 is divided into a fixed clamp upper plate 41 at the upper end and a fixed clamp lower plate 42 at the lower end. The opposite surfaces of the movable clamp 3 and the fixed clamp 4 are provided with a metal heat sink placement groove. The metal heat sink placement groove is divided into three areas: upper, middle and lower. The upper area and the middle area are two isosceles trapezoids. The upper bottom sides of the two isosceles trapezoids are axially symmetrical. The size of the isosceles trapezoid is set to accommodate the third straight periphery 53 and the second straight periphery 52 of the metal heat sink 5; the lower area is a trapezoid, which is used to place the second straight periphery 52, a part of the length of the first straight periphery 51, and a part of the length of the third straight periphery 53. The upper plate 31 of the movable fixture and the lower plate 32 of the movable fixture, and the upper plate 41 of the fixed fixture and the lower plate 42 of the fixed fixture are all connected and fastened by locking bolts. An appropriate gap is left between the metal heat sink placement groove and the edge of the metal heat sink so that the two are close but not clamped, and there is no obstruction in placing and removing the metal heat sink. When the metal heat sink 5 is placed in the metal heat sink placement groove, it is 2-3 mm higher than the top edge of the movable fixture 3 and the fixed fixture (4).

[0020] The movable clamp upper plate 31 and the fixed clamp upper plate 41 are made of copper, while the movable clamp lower plate 32 and the fixed clamp lower plate 42 are made of carbon steel. Copper has good heat dissipation properties, which can prevent excessive heat input during welding and cause deformation of the clamp, thereby improving the working time.

[0021] The bottom of the fixing fixture 4 is L-shaped, and the bottom edge is used to open screw holes for mounting screws on the table.

[0022] The movable clamp 3 is provided with five equidistant through holes. The holes at both ends are used to insert the metal connecting rod 22 and be fastened with nuts to form a detachable connection, which is convenient for positioning according to different platform heights; the middle three are threaded holes, which are used to install bolts to fasten the movable clamp upper plate 31 and the movable clamp lower plate 32. The fixed clamp 4 is provided with three equidistant through threaded holes, which are used to install bolts to fasten the fixed clamp upper plate 41 and the fixed clamp lower plate 42.

[0023] How to Use This Device: This auxiliary pneumatic clamp is placed within the operating range of the welding equipment. First, insert the metal heat sink 5 into the metal heat sink groove of the fixed clamp 4. Then, activate cylinder 2, pushing the movable clamp 3 outward. The metal heat sink groove of the movable clamp 3 also aligns with the metal heat sink 5. The movable clamp 3 and the fixed clamp 4 clamp the metal heat sink 5 tightly, leaving 2-3mm of the upper portion of the metal heat sink 5 exposed as the welded portion. After welding, return cylinder 2 and the movable clamp 3 to their original position. Use pliers to remove the metal heat sink 5 from the metal heat sink groove of the fixed clamp 4.

Claims

1. A pneumatic fixture for assisting metal heat sink welding, comprising a mounting table (1), a cylinder (2), a movable fixture (3), and a fixed fixture (4), wherein the cylinder (2) is fixed on the mounting table (1), a metal connecting rod (22) is fixed to the telescopic head of the cylinder (2), an end of the metal connecting rod (22) is fixed to the movable fixture (3), the fixed fixture (4) and the movable fixture (3) are arranged parallel to each other, and the fixed fixture (4) is fixed on the table within the operating range of the welding equipment, and is characterized by: The movable clamp (3) is divided into an upper movable clamp plate (31) at the upper end and a lower movable clamp plate (32) at the lower end, and the fixed clamp (4) is divided into an upper fixed clamp plate (41) at the upper end and a lower fixed clamp plate (42) at the lower end. The opposite surfaces of the movable clamp (3) and the fixed clamp (4) are provided with a metal heat sink placement groove. The metal heat sink placement groove is divided into three areas: upper, middle and lower. The upper area and the middle area are two isosceles trapezoids. The upper bottom sides of the two isosceles trapezoids are axially symmetrical. The size of the isosceles trapezoid is set to accommodate the third straight periphery (53) and the second straight periphery (52) of the metal heat sink (5). The lower area is a trapezoid for accommodating the second straight periphery (52), a portion of the length of the first straight periphery (51) and a portion of the length of the third straight periphery (53). When the metal heat sink (5) is placed in the metal heat sink placement groove, it is higher than the upper top side of the movable clamp (3) and the fixed clamp (4).

2. The metal heat sink welding auxiliary pneumatic clamp according to claim 1, characterized in that: The movable fixture upper plate (31) and the movable fixture lower plate (32), the fixed fixture upper plate (41) and the fixed fixture lower plate (42) are all connected and fastened by locking bolts.

3. The metal heat sink welding auxiliary pneumatic clamp according to claim 1, characterized in that: The movable fixture upper plate (31) and the fixed fixture upper plate (41) are made of copper, and the movable fixture lower plate (32) and the fixed fixture lower plate (42) are made of carbon steel.

4. The metal heat sink welding auxiliary pneumatic clamp according to claim 1, characterized in that: The bottom of the fixing fixture (4) is L-shaped, and the bottom edge is used to open the screw hole.

5. The metal heat sink welding auxiliary pneumatic clamp according to claim 2, characterized in that: The movable clamp (3) is provided with five equidistant through holes, the holes at both ends are used to be inserted with the metal connecting rod (22) and fastened with nuts, the middle three are threaded holes, which are used to install bolts to fasten the movable clamp upper plate (31) and the movable clamp lower plate (32), and the fixed clamp (4) is provided with three equidistant through threaded holes, which are used to install bolts to fasten the fixed clamp upper plate (41) and the fixed clamp lower plate (42).

Images