Automatic welding device for cooling fan

Abstract

The present invention relates to the technical field of welding devices, and discloses an automatic welding device for a heat dissipation fan, including a base, on which a feeding clamp, a transmission mechanism and a limiting mechanism are arranged, the transmission mechanism including a first linear drive module, a mounting plate is arranged on the driving end of the first linear drive module, and a driving rod is arranged on the mounting plate. In the present invention, when performing blade welding processing, the blade is clamped by the feeding clamp, and the blade is pushed to the edge of the hub by the transmission mechanism, and the clamping assembly can clamp the hub from the upper and lower sides, so as to play a fastening role during the welding process, so that the hub and the blade remain relatively still, thereby helping to improve the welding accuracy, and secondly, the transmission mechanism drives the clamping assembly to rotate during the process of driving the feeding clamp to reset, so that the feeding clamp automatically aligns with the next welding position. In summary, the present device can not only improve the processing accuracy, but also realize automated processing, thereby effectively improving the processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, and in particular to an automatic welding device for a heat dissipation fan. Background Art

[0002] As the performance of electronic devices continues to improve, the temperature generated during operation is also getting higher and higher. Excessively high ambient temperature can easily affect the performance and stability of electronic devices, so cooling fans have become an indispensable component in electronic devices. The fan wheel of a cooling fan is usually composed of a hub and fan blades.

[0003] Currently, welding processing is mostly carried out by workers holding welding guns. Welders set welding points based on their eyesight and experience. The position accuracy is not high, the fan blades are unevenly distributed, and it is difficult to control the angle of the fan blades, which has a certain impact on the processing quality of the cooling fan impeller. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic welding device for a heat dissipation fan in order to solve the above-mentioned problem.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A cooling fan automatic welding device comprises a base, on which a feeding clamp, a transmission mechanism and a limiting mechanism are arranged; the transmission mechanism comprises a first linear drive module, a mounting plate is arranged on the driving end of the first linear drive module, a driving rod is arranged on the mounting plate, a turntable is arranged on the base, a guide groove is arranged on the turntable, a guide bolt matching the guide groove is arranged on the driving rod, the guide groove comprises a plurality of first groove bodies and a plurality of second groove bodies; the limiting mechanism comprises a mounting bracket, on which two telescopic rotating modules are symmetrically distributed up and down are arranged, and the two telescopic rotating modules are arranged A first connecting seat is provided on each driving end, a clamping assembly is provided on each of the two first connecting seats, an air cylinder and a second linear driving module are provided between the two clamping assemblies; the clamping assembly includes a cylinder body, a piston is provided inside the cylinder body, a piston rod and a second elastic member are provided on the piston, one end of the piston rod extends to the outside of the cylinder body, and a welding module is provided on the extended end of the piston rod, a roller is provided on the welding module, and a one-way valve and a pressure relief valve are provided on the side of the cylinder body; a second pipeline is provided between the two clamping assemblies, and a first pipeline is provided between the clamping assembly and the air cylinder.

[0007] Preferably, the base is rotatably connected to the turntable, the driving direction of the first linear drive module is set along the radial direction of the turntable, the mounting plate is set along the vertical direction, the feeding clamp is set at the upper end of the mounting plate, the driving rod is set along the radial direction of the turntable, the guide bolt is set at the end of the driving rod away from the mounting plate, the guide bolt is set along the vertical direction, and the guide bolt passes through the driving rod, and a first elastic member is set between the upper end of the guide bolt and the driving rod.

[0008] Preferably, the first groove body is arranged along the radial direction of the turntable, the second groove body is located between two adjacent first groove bodies, a plurality of the first groove bodies and a plurality of the second groove bodies are alternately distributed in a ring shape around the turntable, one end of the second groove body is connected with an end of a first groove body close to the outer circumference of the turntable, and the other end is connected with an end of another first groove body away from the outer circumference of the turntable, the depth of the first groove body close to the center of the turntable is less than the depth close to the outer circumference of the turntable, the depth of the second groove body close to the center of the turntable is greater than the depth close to the outer circumference of the turntable, and the guide bolt is in sliding contact with the guide groove.

[0009] Preferably, the turntable is fixedly connected to the mounting bracket, the telescopic rotation module includes a telescope, a rotator and a pressure block are provided on the telescopic end of the telescope, the rotator can rotate around the telescopic section of the telescope, and the first connecting seat is provided on the rotator.

[0010] Preferably, the cylinder is fixedly connected to the first connecting seat, the first pipeline is connected to the one-way valve, and both ends of the second pipeline are connected to the two cylinders respectively.

[0011] Preferably, a second connecting seat is provided between the second linear drive module and the clamping assembly located at the lower side, and the driving end of the second linear drive module is connected to the piston push rod of the inflation cylinder.

[0012] Preferably, the pressing block is provided with anti-slip rubber.

[0013] Preferably, the number of the first slots is the same as the number of blades of the heat dissipation fan.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] 1. The present application sets a feeding clamp, a clamping assembly and a transmission mechanism. When performing blade welding processing, the blade is clamped by the feeding clamp and pushed to the edge of the hub by the transmission mechanism. The clamping assembly can clamp the hub from the upper and lower sides, thereby playing a fastening role during the welding process, keeping the hub and the blade relatively still, thus helping to improve the welding accuracy. Secondly, the transmission mechanism drives the clamping assembly to rotate during the process of resetting the feeding clamp, so that the feeding clamp automatically aligns with the next welding position. In summary, the present device can not only improve the processing accuracy, but also realize automated processing, thereby effectively improving the processing efficiency.

[0016] 2. By setting up an inflation cylinder and a clamping assembly, the present application can make the welding module at the telescopic end of the inflation cylinder close to the splicing position of the hub and the blade. The inflation cylinder is connected to the clamping assembly through a first pipe. Relying on the transmission of the fluid, the retracted ends of the clamping assemblies on the upper and lower sides are always against the blade under the action of pressure. This setting allows the welding module to closely follow and move along the curved surface of the blade, so the welding processing of the present device has higher precision.

[0017] 3. The present application sets a turntable, sets a guide groove on the turntable, and cooperates with the guide bolt and the guide groove, and relies on the first linear drive module to drive the guide bolt to make linear reciprocating motion, so that the guide bolt can move in the guide groove. The guide groove is composed of a first groove body and a second groove body. When the guide bolt moves in the first groove body, the turntable does not move. When the guide bolt moves in the second groove body, it drives the turntable to rotate, and then drives the wheel hub to rotate, so that the blade can be aligned to the welding position. Relying on the above-mentioned settings, the present device can realize automatic welding, which helps to improve welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a welding device and a heat dissipation fan provided in an embodiment of the present invention is shown;

[0019] Figure 2 It shows a schematic diagram of the overall structure of a welding device provided in an embodiment of the present invention;

[0020] Figure 3 It shows a schematic structural diagram of a telescopic rotating module and a clamping assembly provided in an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the structure of a turntable and a guide groove provided in an embodiment of the present invention is shown;

[0022] Figure 5 A schematic structural diagram of a guide bolt and a first elastic member provided according to an embodiment of the present invention is shown;

[0023] Figure 6 A schematic diagram of the internal structure of a cylinder provided in an embodiment of the present invention is shown;

[0024] Figure 7 A schematic diagram of the structure of a telescopic rotating module provided according to an embodiment of the present invention is shown.

[0025] Legend:

[0026] 1. Base; 2. Feeding clamp; 3. First linear drive module; 4. Mounting plate; 5. Drive rod; 6. Turntable; 7. First trough; 8. Second trough; 9. Guide bolt; 10. First elastic member; 11. Mounting bracket; 12. Telescopic rotating module; 1201. Telescope; 1202. Rotator; 1203. Press block; 13. First connecting seat; 14. Clamping assembly; 1401. Cylinder; 1402. Piston; 1403. Piston rod; 1404. Second elastic member; 15. One-way valve; 16. Welding module; 17. Roller; 18. Second connecting seat; 19. Inflator; 20. Second linear drive module; 21. First pipeline; 22. Second pipeline; 23. Pressure relief valve. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-7 , the present invention provides a technical solution:

[0029] A cooling fan automatic welding device comprises a base 1, a feeding clamp 2, a transmission mechanism and a limiting mechanism are arranged on the base 1, the transmission mechanism comprises a first linear drive module 3, a mounting plate 4 is arranged on the driving end of the first linear drive module 3, a driving rod 5 is arranged on the mounting plate 4, a turntable 6 is arranged on the base 1, a guide groove is arranged on the turntable 6, a guide bolt 9 cooperating with the guide groove is arranged on the driving rod 5, the guide groove comprises a plurality of first groove bodies 7 and a plurality of second groove bodies 8, the limiting mechanism comprises a mounting bracket 11, two telescopic rotating modules 12 symmetrically distributed up and down are arranged on the mounting bracket 11, a first connecting seat 13 is arranged on the driving end of the two telescopic rotating modules 12, and the two first connecting seats 13 are each provided with a clamping assembly 14, an air cylinder 19 and a second linear drive module 20 are provided between the two clamping assemblies 14, the clamping assembly 14 includes a cylinder 1401, a piston 1402 is provided inside the cylinder 1401, a piston rod 1403 and a second elastic member 1404 are provided on the piston 1402, one end of the piston rod 1403 extends to the outside of the cylinder 1401, and a welding module 16 is provided on the extended end of the piston rod 1403, a roller 17 is provided on the welding module 16, a one-way valve 15 is provided on the side of the cylinder 1401, a second pipeline 22 is provided between the two clamping assemblies 14, and a first pipeline 21 is provided between the clamping assembly 14 and the air cylinder 19.

[0030] Specifically, Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the transmission mechanism includes a first linear drive module 3, a mounting plate 4 is provided on the driving end of the first linear drive module 3, a driving rod 5 is provided on the mounting plate 4, a turntable 6 is provided on the base 1, a guide groove is provided on the turntable 6, a guide bolt 9 cooperating with the guide groove is provided on the driving rod 5, and the guide groove includes a plurality of first groove bodies 7 and a plurality of second groove bodies 8. The base 1 is rotatably connected with the turntable 6, the driving direction of the first linear drive module 3 is set along the radial direction of the turntable 6, the mounting plate 4 is set along the vertical direction, the feeding clamp 2 is set at the upper end of the mounting plate 4, the driving rod 5 is set along the radial direction of the turntable 6, the guide bolt 9 is set at one end of the driving rod 5 away from the mounting plate 4, the guide bolt 9 is set along the vertical direction, and the guide bolt 9 passes through the driving rod 5, and a first elastic member 10 is set between the upper end of the guide bolt 9 and the driving rod 5. The first groove body 7 is arranged along the radial direction of the turntable 6, the second groove body 8 is located between two adjacent first groove bodies 7, and multiple first groove bodies 7 and multiple second groove bodies 8 are alternately distributed in a ring shape around the turntable 6. One end of the second groove body 8 is connected with an end of a first groove body 7 close to the outer periphery of the turntable 6, and the other end is connected with an end of another first groove body 7 away from the outer periphery of the turntable 6. The depth of the first groove body 7 close to the center of the turntable 6 is less than the depth close to the outer periphery of the turntable 6, and the depth of the second groove body 8 close to the center of the turntable 6 is greater than the depth close to the outer periphery of the turntable 6. The guide bolt 9 is in sliding contact with the guide groove.

[0031] The first linear drive module 3 can drive the feeding clamp 2 and the guide bolt 9 to move synchronously. In the process of the blade gradually approaching the hub, the guide bolt 9 moves in the first slot 7, and the turntable 6 does not rotate at this time. When the guide bolt 9 moves to the end of the first slot 7 close to the center of the turntable 6, since the depth of the second slot 8 close to the center of the turntable 6 is deeper, the guide bolt 9 enters the second slot 8 under the elastic force of the first elastic member 10. In the process of the feeding clamp 2 and the guide bolt 9 moving in the opposite direction to reset, the feeding clamp 2 releases the blade, and the guide bolt 9 moves along the second slot 8. At this time, the turntable 6 rotates driven by the guide bolt 9, and drives the cooling fan to rotate synchronously, so that the feeding clamp 2 is aligned with the next welding position.

[0032] Specifically, Figure 2 , Figure 3 and Figure 7As shown, the turntable 6 is fixedly connected to the mounting bracket 11, and the telescopic rotating module 12 includes a telescope 1201. The telescopic end of the telescope 1201 is provided with a rotator 1202 and a pressing block 1203. The rotator 1202 can rotate around the telescopic section of the telescope 1201, and the first connecting seat 13 is provided on the rotator 1202. The telescope 1201 can drive the rotator 1202 and the pressing block 1203 to move, so that the pressing block 1203 abuts against the hub of the cooling fan, and the rotator 1202 can drive the first connecting seat 13 and the clamping assembly 14 to rotate around the hub of the cooling fan, and the welding module 16 can move along the weld by rotating, thereby completing the welding operation.

[0033] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, the limiting mechanism includes a mounting bracket 11, on which two telescopic rotating modules 12 are symmetrically distributed up and down are arranged, and the driving ends of the two telescopic rotating modules 12 are each provided with a first connecting seat 13, and the two first connecting seats 13 are each provided with a clamping assembly 14, and an inflatable cylinder 19 and a second linear driving module 20 are arranged between the two clamping assemblies 14, and the clamping assembly 14 includes a cylinder 1401, and a piston 1402 is arranged inside the cylinder 1401, and the piston 140 2 is provided with a piston rod 1403 and a second elastic member 1404, one end of the piston rod 1403 extends to the outside of the cylinder 1401, and a welding module 16 is provided on the extended end of the piston rod 1403, and a roller 17 is provided on the welding module 16, a one-way valve 15 is provided on the side of the cylinder 1401, the cylinder 1401 is fixedly connected to the first connecting seat 13, the first pipeline 21 is connected to the one-way valve 15, and the two ends of the second pipeline 22 are respectively connected to the two cylinders 1401. A second connecting seat 18 is provided between the second linear drive module 20 and the clamping assembly 14 located at the lower side, and the driving end of the second linear drive module 20 is connected to the piston push rod of the inflatable cylinder 19.

[0034] The second linear drive module 20 can drive the piston push rod to move, so that the inflation cylinder 19 pushes the air through the first pipe 21 and the one-way valve 15 into the cylinder 1401. As the air in the cylinder 1401 continues to accumulate, the piston 1402 is squeezed and drives the welding module 16 to approach the blade until the roller 17 fits the blade. During welding, the clamping assembly 14 is driven by the rotator 1202 to rotate around the hub of the cooling fan, so the welding module 16 can weld the joint between the hub and the blade. At the same time, since the two cylinders 1401 are connected by the second pipe 22, and the blades are arc-shaped, during the movement of the welding module 16, one clamping assembly 14 is squeezed, and compressed air will be transmitted between the two cylinders 1401 to ensure that the pressure is maintained, so that the roller 17 can always fit the blade, which not only stabilizes the blade, but also enables the welding module 16 to align the weld, thereby improving the welding accuracy.

[0035] Specifically, Figure 7 As shown, the pressing block 1203 is provided with anti-skid rubber, which can effectively improve the fastening degree of the cooling fan hub during the welding process, thereby improving the welding accuracy.

[0036] Specifically, Figure 1 As shown, the number of the first slot bodies 7 is the same as the number of blades of the cooling fan. The turntable 6 can customize the number of the first slot bodies 7 and the second slot bodies 8 according to the number of blades of the cooling fan, so as to adapt to cooling fans with different numbers of blades. This setting can effectively improve the modification flexibility and adaptability of the device.

[0037] In summary, the automatic welding device for a cooling fan provided in this embodiment, during processing, firstly places the hub of the cooling fan between the two telescopic rotating modules 12, stretches the expander 1201 to make the pressing block 1203 press against the hub, and achieves a clamping effect, and makes the hub and the expander 1201 coaxially arranged, the feeding clamp 2 pushes the blade to a position that fits the outer periphery of the hub, the second linear drive module 20 is started to rush air into the cylinder 1401 through the inflator 19, and as the air accumulates, the piston 1402 moves, and the piston 1402 is subjected to The extrusion drives the welding module 16 close to the blade until the roller 17 fits the blade. During welding, the clamping assembly 14 is driven by the rotator 1202 to rotate around the hub of the cooling fan, so that the welding module 16 can weld the joint between the hub and the blade. Then the pressure relief valve 23 is opened, and the second elastic member 1404 resets the welding module 16. The rotator 1202 drives the clamping assembly 14 to reset, and the feeding clamp 2 releases the blade and moves in the opposite direction. At this time, the turntable 6 is rotated driven by the guide bolt 9 to align the feeding clamp 2 with the next welding position.

[0038] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic welding device for a cooling fan, comprising a base (1), characterized in that: The base (1) is provided with a feeding clamp (2), a transmission mechanism and a limiting mechanism, and the feeding clamp (2) is used to clamp the blades; The transmission mechanism comprises a first linear drive module (3), a mounting plate (4) is arranged on the driving end of the first linear drive module (3), a driving rod (5) is arranged on the mounting plate (4), a rotating disk (6) is arranged on the base (1), a guide groove is arranged on the rotating disk (6), a guide bolt (9) cooperating with the guide groove is arranged on the driving rod (5), and the guide groove comprises a plurality of first groove bodies (7) and a plurality of second groove bodies (8); The limiting mechanism comprises a mounting bracket (11), on which two telescopic rotating modules (12) are arranged symmetrically in an upper and lower direction, a first connecting seat (13) is arranged on the driving end of the two telescopic rotating modules (12), a clamping assembly (14) is arranged on the two first connecting seats (13), an air cylinder (19) and a second linear driving module (20) are arranged between the two clamping assemblies (14), and the driving end of the second linear driving module (20) is connected to the piston push rod of the air cylinder (19); The clamping assembly (14) comprises a cylinder (1401), a piston (1402) is arranged inside the cylinder (1401), a piston rod (1403) and a second elastic member (1404) are arranged on the piston (1402), one end of the piston rod (1403) extends to the outside of the cylinder (1401), and a welding module (16) is arranged on the extended end of the piston rod (1403), the welding module (16) is used to weld the joint between the hub and the blade, and a roller (17) is arranged on the welding module (16), and a one-way valve (15) and a pressure relief valve (23) are arranged on the side of the cylinder (1401); A second pipeline (22) is provided between the two clamping assemblies (14), and a first pipeline (21) is provided between the clamping assembly (14) and the inflation cylinder (19); The base (1) is rotatably connected to the turntable (6); the driving direction of the first linear drive module (3) is arranged along the radial direction of the turntable (6); the mounting plate (4) is arranged along the vertical direction; the feeding clamp (2) is arranged at the upper end of the mounting plate (4); the driving rod (5) is arranged along the radial direction of the turntable (6); the guide bolt (9) is arranged at an end of the driving rod (5) away from the mounting plate (4); the guide bolt (9) is arranged along the vertical direction, and the guide bolt (9) penetrates the driving rod (5); and a first elastic member (10) is arranged between the upper end of the guide bolt (9) and the driving rod (5); The first groove body (7) is arranged along the radial direction of the rotating disk (6); the second groove body (8) is located between two adjacent first groove bodies (7); a plurality of the first groove bodies (7) and a plurality of the second groove bodies (8) are alternately distributed in a ring shape around the rotating disk (6); one end of the second groove body (8) is connected to an end of a first groove body (7) close to the outer periphery of the rotating disk (6); the other end is connected to an end of another first groove body (7) away from the outer periphery of the rotating disk (6); the depth of the first groove body (7) close to the center of the rotating disk (6) is less than the depth of the second groove body (8) close to the center of the rotating disk (6) is greater than the depth of the second groove body (8) close to the outer periphery of the rotating disk (6); and the guide bolt (9) is in sliding contact with the guide groove; The turntable (6) is fixedly connected to the mounting bracket (11); the telescopic rotation module (12) comprises a telescope (1201); a rotator (1202) and a pressing block (1203) are arranged on the telescopic end of the telescope (1201); the rotator (1202) can rotate around the telescopic section of the telescope (1201); and the first connecting seat (13) is arranged on the rotator (1202); The cylinder (1401) is fixedly connected to the first connecting seat (13), the first pipeline (21) is connected to the one-way valve (15), and both ends of the second pipeline (22) are respectively connected to the two cylinders (1401).

2. The automatic welding device for a heat dissipation fan according to claim 1, characterized in that: A second connecting seat (18) is provided between the second linear drive module (20) and the clamping assembly (14) located at the lower side.

3. The automatic welding device for a heat dissipation fan according to claim 1, characterized in that: The pressing block (1203) is provided with anti-slip rubber.

4. The automatic welding device for a heat dissipation fan according to claim 1, characterized in that: The number of the first slots (7) is the same as the number of blades of the cooling fan.

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