A welding robot for assembling pulley structural parts of a double-column lift

Abstract

The present invention discloses a welding robot for assembling pulley structural parts of a double-column lift, which relates to the field of welding technology. It includes a processing box and a pulley connecting frame. Two pulley connecting plates are fixedly connected to one side of the pulley connecting frame, and two support arms are provided on the other side of the pulley connecting frame. A welding mechanical arm and a clamping structure are installed on the processing box. After the surfaces that need to be assembled and fitted between the various parts are in a sealed state, and without affecting the welding work, the support arm and the pulley connecting frame are welded and fixed together, which can prevent welding slag from entering the connecting surfaces of multiple parts that need to be welded.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, in particular to a welding robot for assembling pulley structural parts of a double-column lift. Background Art

[0002] The upper pulley structure of the column lift, also known as the "sliding trolley" or "mobile bracket", is one of the core components of the column lift. It is mainly used to support and flexibly adjust the position of the vehicle lifting point to meet the lifting requirements of different models.

[0003] During the assembly process of the pulley structure of a two-post lift, when welding equipment is used to weld and assemble multiple parts, the welding slag generated during the welding process of one part will stick to the contact and fitting surface of the part with other parts, resulting in welding slag at the fitting place of the two parts. After one welding process is completed, the part needs to be removed from the clamping and fixing structure, and the contact surface of the next welding position needs to be cleaned before it is clamped and fixed again to continue the welding and assembly work. When welding and assembling a pulley structure composed of multiple parts, a high time cost is invested. Summary of the Invention

[0004] The object of the present invention is to provide a welding robot for assembling pulley structural parts of a double-column lift to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a welding robot for assembling pulley structural parts of a double-column lift, comprising a processing box and a pulley connecting frame, one side of the pulley connecting frame is fixedly connected to two pulley connecting plates, and the other side of the pulley connecting frame is provided with two support arms, a welding robot arm and a clamping structure are installed on the processing box, and the welding robot arm includes a mounting frame 1 provided on the top of the processing box, a transmission assembly provided between the mounting frame 1 and the processing box, two pneumatic cylinders 1 fixedly installed on both sides of the mounting frame 1, and a mounting frame 2 and a clamping structure provided inside the mounting frame 1. Two transmission frames, four pneumatic cylinders 2 are installed inside the mounting frame 1, two of the pneumatic cylinders 2 are respectively installed on the two transmission frames 1 and a driving assembly is provided between the transmission frame 1, and the other two pneumatic cylinders 2 are fixedly installed on the mounting frame 2, and a welding gun is provided at the bottom end of the four pneumatic cylinders 2. The clamping structure includes a moving frame 1 arranged inside the processing box, a clamping assembly arranged on the top of the moving frame 1, and a pneumatic cylinder 3, a biaxial pneumatic cylinder and two pneumatic cylinders 4 arranged at the bottom of the moving frame 1. The biaxial pneumatic cylinder and the two pneumatic cylinders 4 are driven in conjunction with a support assembly.

[0006] Preferably, the two transmission frames 1 are symmetrically distributed inside the mounting frame 1 and are slidingly connected to the mounting frame 1, the piston end of the pneumatic cylinder 1 is fixedly connected to the adjacent transmission frame 1, the mounting frame 2 is arranged between the two transmission frames 1 and is fixedly connected to the mounting frame 1, the piston end of the pneumatic cylinder 2 is fixedly connected to the mounting frame 3, and the welding gun is fixedly mounted on the mounting frame 3.

[0007] Preferably, the transmission assembly includes a forward and reverse motor 2 fixedly connected to the bottom of the inner cavity of the processing box, a gear box fixedly connected to the output end of the forward and reverse motor 2, two outer shells fixedly connected on both sides of the processing box, and two screw rods rotatably installed inside the two outer shells. Gear 4 is fixedly connected to both output ends of the gear box, and gear 3 is meshed on the outer sides of the two gears 4. The two gears 3 are fixedly installed on the outer sides of the two screw rods respectively.

[0008] Preferably, a transmission frame three is installed on the outer side of the two screw rods through a nut pair, and the transmission frame three is slidably installed on the outer shell on the same side. The top of the transmission frame three is fixedly connected to the mounting frame one, and rollers are fixedly installed on both sides of the bottom of the mounting frame one, and the rollers are against the top of the processing box.

[0009] Preferably, each of the driving components includes a transmission frame 2 rotatably connected to the inside of the transmission frame 1, a gear 1 fixedly connected to the top of the transmission frame 2, a gear 2 meshing with one side of the gear 1, and a forward and reverse motor 1 arranged at the bottom of the gear 2, the transmission frame 2 is fixedly installed on the outside of the pneumatic cylinder 2 that passes through the transmission frame 1, the forward and reverse motor 1 is fixedly installed on one side of the transmission frame 1, the output shaft of the forward and reverse motor 1 is fixedly connected to the gear 2, a brake 1 is installed on the outside of the output shaft of the forward and reverse motor 1, and the brake 1 is fixedly installed on one side of the transmission frame 1.

[0010] Preferably, the pneumatic cylinder three is fixedly installed inside the processing box, the piston end of the pneumatic cylinder three is fixedly connected to the moving frame one, the bottom of the inner cavity of the processing box is fixedly connected with a telescopic rod one, and the piston end of the telescopic rod one is fixedly connected to the moving frame one.

[0011] Preferably, the clamping assembly includes a side plate fixedly connected to one side of the top of the processing box, a pneumatic cylinder six fixedly penetrated on the side plate, a transmission plate fixedly connected to the piston end of the pneumatic cylinder six, a forward and reverse motor three provided on the other side of the top of the processing box, and a transmission disk fixedly connected to the output end of the forward and reverse motor three, four clamping frames fixedly connected to one side of the transmission plate, two telescopic rods four fixedly penetrated on the side plate, the piston end of the telescopic rod four is fixedly connected to the transmission plate, a brake two is installed on the outer side of the output end of the forward and reverse motor three, and the brake two is fixedly connected to the mounting frame four.

[0012] Preferably, a mounting frame four is fixedly connected between the outer sides of the forward and reverse motors three and the processing box, a moving frame four and two mounting bent rods are fixedly connected to one side of the transmission disk, a double-axis pneumatic cylinder two is fixedly connected to the inside of the moving frame four, both piston ends of the double-axis pneumatic cylinder two are fixedly connected to a clamping frame, the top and bottom of one side of the moving frame four are fixedly connected to a U-shaped plate, one end of the mounting bent rod is fixedly connected to a mounting frame five, a pneumatic cylinder five and two telescopic rods three are fixedly penetrated on the mounting frame five, one end of the pneumatic cylinder five is fixedly connected to the U-shaped frame, and the piston ends of the two telescopic rods three are fixedly connected Mounting frame six, the U-shaped frame is fixedly connected to the two mounting frames six, a moving frame five is provided on one side of the U-shaped frame, the moving frame five passes through the two mounting frames six and is slidably connected to the two mounting frames six, one end of the moving frame five is fixedly connected to a concave clamping piece, the inside of the U-shaped frame is fixedly connected to the forward and reverse motor four and the brake three, the output end of the forward and reverse motor four is fixedly connected to the transmission shaft, one end of the transmission shaft passes through the brake three and then extends to the inside of the moving frame five, a gear five is fixedly provided on the outer side of the transmission shaft, the gear five is engaged with a rack, and the rack is fixedly installed inside the moving frame five.

[0013] Preferably, the support assembly includes two moving frames two arranged inside the moving frame one, the moving frame one is fixedly connected with a plurality of guide rods inside, and the plurality of guide rods all pass through the two moving frames two, the double-axis pneumatic cylinder is fixedly connected to the bottom of the moving frame one, and the two piston ends of the double-axis pneumatic cylinder are fixedly connected to a fixed plate, the front fixed plate is fixedly connected to the front moving frame two, and the rear fixed plate is fixedly connected to the rear moving frame two, a moving frame three is provided on one side of the two moving frames two, and the two moving frames three are respectively fixedly connected to the piston ends of two pneumatic cylinder fours, a trolley is fixedly connected to the outside of the pneumatic cylinder four, and two telescopic rods two are fixedly connected to the top of the trolley, and the two piston ends of the telescopic rods two pass through the adjacent moving frames three and are fixedly connected to the adjacent moving frames two, and multiple support shafts are rotatably connected on both sides of the top of the two moving frames two.

[0014] Preferably, each of the support arms includes a pulley adapter frame, a bearing, a welding long shaft, a welding cover, a base and a pulley extension arm, and a plurality of plug-in circular grooves are formed on the pulley connecting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When using this application, the pulley adapter frame, bearings, welding long shaft, welding cover, base and pulley extension arm and other parts in the support arm are assembled first, so that the surfaces that need to be assembled and fitted between the parts are in a sealed state, and without affecting the welding work, the support arm and the pulley connecting frame are welded and fixed together. This can avoid the entry of welding slag between the joint surfaces of multiple parts that need to be welded together, reduce the cost of cleaning parts during welding, and avoid slag jamming.

[0017] 2. When the present application is used, the working welding gun moves at the weld of the pulley adapter frame and the pulley extension arm, and the pulley adapter frame and the pulley extension arm are completely welded and fixed; through the cooperation of the pneumatic cylinder 1, pneumatic cylinder 2, forward and reverse motor 3, transmission plate, pneumatic cylinder 3, telescopic rod 1, moving frame 1 and other structures, the support arm is automatically flipped over and the welding work is continued without destroying the clamped and fixed state of the support arm, reducing the time cost investment required for manual operation to flip and clamp again, and eliminating the need for staff to operate the support arm after welding, thereby reducing safety hazards.

[0018] 3. When the present application is used, the welding gun used to perform welding tasks in the welding robot arm can be quickly switched between the circular trajectory welding mode and the linear trajectory welding mode, and one of the two pneumatic cylinders 2 in the rear welding control group and the two pneumatic cylinders 2 in the front welding control group can move forward and backward, so that the rear welding control group and the front welding control group can meet the needs of simultaneous welding of welding seams on both sides of parts with different widths; and the two pneumatic cylinders 2 that can move forward and backward are both equipped with welding guns, and the two welding guns that can move forward and backward can form a welding arm that can weld both sides of parts with a larger processing span at the same time, thereby ensuring the applicability of the welding robot arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 A partial cross-sectional view of a processing box of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the transmission frame 3 of the present invention;

[0022] Figure 4 This is a schematic structural diagram of a mounting frame 1 of the present invention;

[0023] Figure 5 This is a schematic structural diagram of the mounting frame 3 of the present invention;

[0024] Figure 6 This is a schematic structural diagram of the second mounting frame of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the processing box of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the transmission plate of the present invention;

[0027] Figure 9 Schematic diagram of the structure of the motion frame 1 of the present invention;

[0028] Figure 10 Schematic diagram of the structure of the motion frame 3 of the present invention;

[0029] Figure 11 It is a structural schematic diagram of the pulley connecting frame of the present invention;

[0030] Figure 12 It is a structural schematic diagram of the transmission plate of the present invention;

[0031] Figure 13 It is a structural schematic diagram of the clamping frame of the present invention;

[0032] Figure 14 Schematic diagram of the structure of the mounting frame 6 of the present invention.

[0033] Numbers in the figure: 1, processing box; 2, welding robot arm; 21, mounting frame 1; 22, pneumatic cylinder 1; 23, mounting frame 2; 24, transmission frame 1; 25, transmission frame 2; 26, gear 1; 27, gear 2; 28, forward and reverse motor 1; 29, brake 1; 210, pneumatic cylinder 2; 211, mounting frame 3; 212, welding gun; 213, transmission frame 3; 214, screw; 215, gear 3; 216, gear 4; 217, gear box; 218, forward and reverse motor 2; 219, housing; 220, roller;

[0034] 3. Clamping structure; 31. Moving frame 1; 32. Pneumatic cylinder 3; 33. Telescopic rod 1; 34. Guide rod; 35. Moving frame 2; 36. Support shaft; 37. Dual-axis pneumatic cylinder; 38. Fixed plate; 39. Telescopic rod 2; 310. Trolley; 311. Pneumatic cylinder 4; 312. Moving frame 3; 313. Mounting frame 4; 314. Forward and reverse motor 3; 315. Brake 2; 316. Transmission plate; 317. Moving frame 4; 318. Dual-axis pneumatic cylinder 2; 319. U-shaped plate 320. Clamping frame; 321. Mounting bent rod; 322. Mounting frame five; 323. Pneumatic cylinder five; 324. Telescopic rod three; 325. U-shaped frame; 326. Forward and reverse motor four; 327. Brake three; 328. Transmission shaft; 329. Gear five; 330. Rack; 331. Mounting frame six; 332. Moving frame five; 333. Side panel; 334. Pneumatic cylinder six; 335. Transmission plate; 336. Clamping frame; 337. Telescopic rod four; 338. Concave clamping piece;

[0035] 4. Pulley connecting frame; 5. Pulley connecting plate; 6. Inserting circular groove; 7. Pulley adapter frame; 8. Bearing; 9. Welding long shaft; 10. Welding cover; 11. Base; 12. Pulley extension arm. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0037] Example: Figures 1-14 As shown, the present invention provides a technical solution for a welding robot for assembling pulley structural parts of a double-column lift, including a processing box 1 and a pulley connecting frame 4, two pulley connecting plates 5 are fixedly connected to one side of the pulley connecting frame 4, and two supporting arms are provided on the other side of the pulley connecting frame 4. A welding robot arm 2 and a clamping structure 3 are installed on the processing box 1, and the welding robot arm 2 includes a mounting frame 21 provided on the top of the processing box 1, a transmission assembly provided between the mounting frame 21 and the processing box 1, two pneumatic cylinders 22 fixedly installed on both sides of the mounting frame 21, a mounting frame 23 and two transmission frames 24 provided inside the mounting frame 21, and a mounting frame 1. Four pneumatic cylinders 210 are installed inside 21, of which two pneumatic cylinders 210 are respectively installed on two transmission frames 24 and a driving assembly is provided between the transmission frames 24, and the other two pneumatic cylinders 210 are fixedly installed on the mounting frame 23. A welding gun 212 is provided at the bottom of the four pneumatic cylinders 210, and the clamping structure 3 includes a moving frame 31 set inside the processing box 1, a clamping assembly set on the top of the moving frame 31, and a pneumatic cylinder 3 32, a dual-axis pneumatic cylinder 37 and two pneumatic cylinders 4 311 set at the bottom of the moving frame 31. The dual-axis pneumatic cylinder 37 and the two pneumatic cylinders 4 311 are driven in conjunction with a supporting assembly.

[0038] Specifically, such as Figure 1 、 Figure 2 and Figure 3As shown, the transmission assembly in the welding robot arm 2 includes a forward and reverse motor 218 fixedly connected to the bottom of the inner cavity of the processing box 1, and the output end of the forward and reverse motor 218 is fixedly connected to the input end of the gear box 217. The gear box 217 is fixedly installed inside the processing box 1. The two output ends of the gear box 217 are fixedly connected to gear four 216, and the outer sides of the two gear fours 216 are meshed with gear three 215. The inside of the two gear threes 215 is fixedly connected to a screw rod 214, and a shell 219 is fixedly connected to both sides of the processing box 1. The screw rod 214 is rotatably installed inside the shell 219 on the same side, so the forward and reverse motor 218 is controlled to work. Under the action of the gear box 217, the two gear fours 216 and the two gear threes 215, the two screw rods 214 rotate at the same speed and in the same direction.

[0039] A transmission frame three 213 is installed on the outside of the two screw rods 214 through a nut pair. The transmission frame three 213 is slidably installed on the shell 219 on the same side. The transmission frame three 213 can only move horizontally left and right, and the top ends of the two transmission frames three 213 are fixedly connected to the mounting frame one 21. The force of the movement of the transmission frame three 213 acts on the mounting frame one 21.

[0040] By controlling the forward and reverse motor 218 to rotate forward or reverse, the screw rod 214 can be rotated clockwise or counterclockwise, so that the transmission frame 3 213 moves left or right, the mounting frame 1 21 moves left or right, and the four pneumatic cylinders 210 installed on the mounting frame 1 21 and the welding gun 212 installed on the piston end of the pneumatic cylinder 210 move left or right.

[0041] By controlling the transmission assembly to work, the mounting frame 21 can be controlled to move left or right.

[0042] Rollers 220 are fixedly installed on both sides of the bottom of the mounting frame 21. The rollers 220 press against the top of the processing box 1, applying the weight of the mounting frame 21 to the top of the processing box 1, reducing the force on the screw rod 214 and ensuring the service life of the screw rod 214.

[0043] Specifically, such as Figure 1 、 Figure 4 、 Figure 5 and Figure 6As shown, the mounting frame 121 in the welding robot arm 2 is arranged on the top of the processing box 1, and pneumatic cylinders 122 are fixedly installed on both sides of the mounting frame 121. Two transmission frames 24 are arranged inside the mounting frame 121, and the two transmission frames 24 are symmetrically distributed inside the mounting frame 121 and are slidably connected to the mounting frame 121; the mounting frame 23 arranged between the two transmission frames 24 is fixedly connected to the mounting frame 121, and four pneumatic cylinders 210 are passed through the mounting frame 121, of which two pneumatic cylinders 210 are respectively passed through the two transmission frames 24 and a driving assembly is provided between the transmission frames 124, and the other two pneumatic cylinders 210 are fixedly passed through the mounting frame 23. Therefore, the two pneumatic cylinders 210 in the middle cannot move, and the pneumatic cylinder 2 210 at the front and the pneumatic cylinder 2 210 at the rear inside the mounting frame 121 can move. The two front pneumatic cylinders 210 are a front welding control group, and the two rear pneumatic cylinders 210 are a rear welding control group; the piston ends of the two pneumatic cylinders 1 22 are respectively fixedly connected to the transmission frame 1 24 on the outside of the rearmost pneumatic cylinder 210 and the transmission frame 1 24 on the outside of the frontmost pneumatic cylinder 210. The piston end of each pneumatic cylinder 2 210 is fixedly connected to a mounting frame 3 211, and a welding gun 212 is fixedly mounted on the mounting frame 3 211. Therefore, the rear welding control group controls the distance between the two welding guns 212 in the front-to-back direction so that the two work together, and the front welding control group controls the distance between the two welding guns 212 in the front-to-back direction so that the two work together. By controlling the two pneumatic cylinders 1 22 to work, the distance between the two welding guns 212 in the front-to-back direction that cooperate with each other can be controlled to meet the welding processing needs of parts of different sizes.

[0044] Each driving assembly includes a transmission frame 25 rotatably connected to the inside of the transmission frame 1 24, a gear 27 is meshed on one side of a gear 26 fixedly connected to the top of the transmission frame 25, and a forward and reverse motor 28 is provided at the bottom of the gear 27. The transmission frame 25 is fixedly installed on the outside of the pneumatic cylinder 210 that passes through the transmission frame 1 24, and the forward and reverse motor 1 28 is fixedly installed on one side of the transmission frame 1 24. The output shaft of the forward and reverse motor 1 28 is fixedly connected to the gear 2 27 to control the forward and reverse motor 1 28 to work forward or reverse. Under the action of gear 27 and gear 1 26, transmission frame 25 and pneumatic cylinder 2 210 fixedly connected inside transmission frame 25 rotate clockwise or counterclockwise, and the welding gun 212 installed on the piston end of pneumatic cylinder 210 rotates clockwise or counterclockwise to adjust the direction of the muzzle of the welding gun 212. When the mounting frame 1 21 moves left and right, the pneumatic cylinder 1 22 and the forward and reverse motor 1 28 are controlled to cooperate to control the front and rear position and direction of the welding gun 212, so that the welding gun 212, whose position is controlled by the pneumatic cylinder 1 22, moves along a circular trajectory.

[0045] A brake 29 is installed on the outside of the output shaft of the forward and reverse motor 28. The brake 29 is fixedly installed on one side of the transmission frame 24. When the forward and reverse motor 28 stops working, the brake 29 works to limit the gear 27, and the pneumatic cylinder 210 is limited to ensure the stability of the operation of the pneumatic cylinder 210.

[0046] Specifically, such as Figure 1 、 Figure 2 、 Figure 9 and Figure 10 As shown, the pneumatic cylinder three 32 in the clamping structure 3 is fixedly installed inside the processing box 1, the piston end of the pneumatic cylinder three 32 is fixedly connected to the moving frame 1 31, and a telescopic rod 1 33 is fixedly connected to the bottom of the inner cavity of the processing box 1, and the piston end of the telescopic rod 1 33 is fixedly connected to the moving frame 1 31. Under the action of the pneumatic cylinder three 32 and the telescopic rod 1 33, the moving frame 1 31 can move up and down inside the processing box 1.

[0047] The two moving frames 2 35 in the support assembly are both arranged inside the moving frame 1 31, and the multiple guide rods 34 fixedly connected inside the moving frame 1 31 all pass through the two moving frames 2 35. Since the guide rods 34 are arranged in the front and rear directions, the two moving frames 2 35 can move back and forth. The outer side of the double-axis pneumatic cylinder 37 is fixedly connected to the bottom of the moving frame 1 31, and the two piston ends of the double-axis pneumatic cylinder 37 are fixedly connected to the fixed plate 38, and the fixed plate 38 is fixedly connected to the moving frame 2 35 on the same side. When the double-axis pneumatic cylinder 37 is controlled to work and extend, the two moving frames 2 35 move away from each other, and when the double-axis pneumatic cylinder 37 is controlled to contract, the two moving frames 2 35 move closer to each other.

[0048] A moving frame three 312 is provided on one side of each moving frame two 35. The two moving frames three 312 are respectively fixedly connected to the piston ends of two pneumatic cylinder four 311. The trolley 310 fixedly connected to the outside of the pneumatic cylinder four 311 is arranged at the bottom of the inner cavity of the processing box 1. The pneumatic cylinder four 311 can move. Two telescopic rods two 39 are fixedly connected to the top of the trolley 310. The piston ends of the two telescopic rods two 39 pass through the adjacent moving frames three 312 and are fixedly connected to the adjacent moving frames two 35. Therefore, when the moving frame two 35 moves back and forth, the moving frame two 35 applies the force of the back and forth movement to the trolley 310 and the moving frame three 312 on the same side through the telescopic rod two 39, and the moving frame three 312 and the moving frame two 35 on the same side move back and forth synchronously.

[0049] A plurality of support shafts 36 are rotatably connected on both sides of the top of the two second moving frames 35 . The plurality of support shafts 36 are symmetrically distributed on the top of the second moving frame 35 , and the top of the second moving frame 35 forms a guide channel.

[0050] Specifically, such as Figure 1 、 Figure 7 、 Figure 11 、 Figure 12 、 Figure 13 and Figure 14 As shown, the clamping assembly in the clamping structure 3 includes a side plate 333 fixedly connected to one side of the top of the processing box 1, and a pneumatic cylinder 6 334 and two telescopic rods 4 337 are fixedly inserted into the side plate 333. A transmission plate 335 is fixedly connected between the piston end of the pneumatic cylinder 6 334 and the piston end of the telescopic rod 4 337, and four clamping frames 336 are fixedly connected to one side of the transmission plate 335; by controlling the operation of the pneumatic cylinder 6 334, the left and right positions of the transmission plate 335 can be controlled.

[0051] A forward and reverse motor three 314 is provided on the other side of the top of the processing box 1, and a mounting frame four 313 is fixedly connected between the outer side of the forward and reverse motor three 314 and the processing box 1. The forward and reverse motor three 314 cannot move, and a transmission disk 316 is fixedly connected to the output end of the forward and reverse motor three 314. A moving frame four 317 and two mounting bent rods 321 are fixedly connected to one side of the transmission disk 316. A double-axis pneumatic cylinder two 318 is fixedly connected to the inside of the moving frame four 317. Both piston ends of the double-axis pneumatic cylinder two 318 are fixedly connected to a clamping frame 320. A U-shaped plate 319 is fixedly connected to the top and bottom of one side of the moving frame four 317. The clamping frame 320 is inserted on the U-shaped plate 319. By controlling the operation of the double-axis pneumatic cylinder two 318, the upper and lower positions of the two clamping frames 320 can be controlled.

[0052] A brake 2 315 is installed on the outer side of the output end of the forward and reverse motor 314. The brake 2 315 is fixedly connected to the mounting frame 4 313. After the forward and reverse motor 314 works to drive the transmission disk 316 to rotate, the brake 2 315 works to limit the transmission disk 316.

[0053] A fifth mounting frame 322 is fixedly connected to one end of the mounting bent rod 321, and a fifth pneumatic cylinder 323 and two third telescopic rods 324 are fixedly penetrated on the fifth mounting frame 322. A U-shaped frame 325 is fixedly connected to one end of the fifth pneumatic cylinder 323, and the piston ends of the two third telescopic rods 324 are fixedly connected to a sixth mounting frame 331. The U-shaped frame 325 is fixedly connected to the two sixth mounting frames 331, and the U-shaped frame 325 and the two sixth mounting frames 331 move left and right synchronously. A fifth moving frame 332 provided on one side of the U-shaped frame 325 passes through the two sixth mounting frames 331, and the fifth moving frame 332 is slidably connected to the sixth mounting frame 331, and the fifth moving frame 332 and the U-shaped frame 325 move left and right synchronously. An inner concave clamping piece 338 is fixedly connected to one end of the fifth moving frame 332. The U-shaped frame 325 is fixedly connected to the inside of the forward and reverse motor 4 326 and the brake 3 327. One end of the transmission shaft 328 fixedly connected to the output end of the forward and reverse motor 4 326 passes through the brake 3 327 and extends to the inside of the moving frame 5 332. A gear 5 329 is fixedly sleeved on the outside of the transmission shaft 328. The rack 330 engaged with the gear 5 329 is fixedly installed inside the moving frame 5 332. The transmission shaft 328 and the gear 5 329 do not contact the moving frame 5 332. Therefore, when the forward and reverse motor 4 326 is controlled to work forward or reverse, the transmission shaft 328 rotates clockwise or counterclockwise. Under the left and right positions of the gear 5 329 and the rack 330, the moving frame 5 332 moves forward or backward to control the left and right positions of the concave clamping piece 338.

[0054] The specific working principle of the welding robot composed of the processing box 1, the welding robot arm 2 and the clamping structure 3 in this application is as follows:

[0055] First, control the dual-axis pneumatic cylinder 37 to extend so that the two moving frames 2 35 move away from each other, one moving frame 2 35 and one moving frame 312 move to the front side of the processing box 1, and the other moving frame 2 35 and moving frame 3 312 move to the back side of the processing box 1, so that the staff can place the parts in the support arm to the preset position and shorten the manual operation time. Then, control the pneumatic cylinder 4 311 to contract and drive the moving frame 3 312 to move down a certain distance. The downward movement distance of the moving frame 312 is limited, and the moving frame 3 312 still remains in close contact with the piston end of the telescopic rod 2 39.

[0056] Subsequently, the two pulley connecting plates 5 fixedly connected on one side of the pulley connecting frame 4 are aligned with the two U-shaped plates 319, the pulley connecting frame 4 is pushed, and the two pulley connecting plates 5 move into the inside of the two U-shaped plates 319. The dual-axis pneumatic cylinder 2 318 is controlled to work and push the two clamping frames 320 away from each other. The clamping frames 320 are partially inserted into the multiple plug-in circular grooves 6 formed on the pulley connecting plate 5 to complete the clamping and fixing of the pulley connecting frame 4. The pulley connecting frame 4 and the pulley connecting plate 5 are integrally cast and formed without the need for welding.

[0057] Then, two support arms are prepared, each support arm includes a pulley adapter frame 7, a bearing 8, a welded long shaft 9, a welding cover 10, a base 11 and a pulley extension arm 12. The base 11 and the welded long shaft 9 are integrally cast and do not require welding processing. The bearing 8 and the welded long shaft 9 are interference fit and do not require welding processing. The pulley extension arm 12 is assembled by connecting multiple sliding frames; then, after partially inserting the pulley adapter frame 7 into the pulley extension arm 12, the pulley adapter frame 7 is facing the pulley connecting frame 4, and the pulley extension arm 12 is placed in a channel formed by multiple support shafts 36 rotatably connected on a moving frame 2 35, and then the base 11 fixedly installed on the bottom outside the welded long shaft 9 is placed inside the moving frame 3 312, and the bearing 8 outside the welded long shaft 9 is supported, completing the positioning of each part in one support arm; place another support arm on another moving frame 2 35 and moving frame 3 312 in turn to complete the placement of the two support arms.

[0058] Subsequently, the two forward and reverse motors 4 326 are controlled to work, and the two concave clamping parts 338 both move toward the pulley connecting frame 4. When the forward and reverse motors 4 326 stop working, the concave clamping parts 338 move to the inside of the pulley connecting frame 4, and the center line of the concave clamping parts 338 coincides with the center line of the hole reserved for the bearing 8 on the pulley connecting frame 4. The brake three 327 is controlled to work to brake the transmission shaft 328. The transmission shaft 328 cannot rotate, the gear five 329 cannot rotate, the rack 330 is braked and limited by the gear five 329, the moving frame five 332 is braked, and the position of the concave clamping parts 338 is fixed.

[0059] Subsequently, the dual-axis pneumatic cylinder 37 is controlled to work and retract, the two motion frames 2 35 are reset, and the two motion frames 3 12 both drive the base 11, the welded long shaft 9 and the bearing 8 supported by them to move. Finally, the bearing 8 is aligned with the reserved holes on the pulley adapter frame 7 on the same side and the reserved holes on the pulley connecting frame 4. Since the motion frame 3 12 has been driven down a distance in advance by the pneumatic cylinder 4 311, the bearing 8 and the welded long shaft 9 will not affect the left and right movement of the pulley adapter frame 7. The pressure cylinder 334 works to push the transmission plate 335 to move toward the pulley connecting frame 4. After the four clamping frames 336 are fitted in pairs at the corners of the two pulley extension arms 12, the two pulley extension arms 12 and the two pulley adapter frames 7 are forced to move toward the pulley connecting frame 4. The curved end of the pulley adapter frame 7 moves to the inside of the concave clamping piece 338 on the same side. The outer wall of the pulley adapter frame 7 fits with the inside of the concave clamping piece 338. Under the thrust applied by the pressure cylinder 334 and the limiting action of the concave clamping piece 338, the pulley After the trolley is in the working state, the position of the trolley extension arm 12 and the trolley adapter frame 7 is fixed, and the reserved holes on the trolley adapter frame 7 are aligned with the holes reserved for the bearings 8 on the trolley connecting frame 4; then the pneumatic cylinder four 311 is controlled to work to push the moving frame three 312 to move up. After the bearing 8 moves up and passes through the trolley adapter frame 7 and the trolley connecting frame 4 on the same side, the top of the welding long shaft 9 extends to the top of the trolley connecting frame 4. Finally, the welding cover 10 is installed on the outside of the top of the welding long shaft 9 to complete the positioning of each part and the pulley connecting frame 4 in the assembly of the two support arms. The pulley adapter frame 7, bearing 8, welding long shaft 9, welding cover 10, base 11 and pulley extension arm 12 in the support arm are assembled first, so that the surfaces that need to be assembled and fitted between the parts are in a sealed state, and then the support arm and the pulley connecting frame 4 are welded and fixed together, which can avoid the entry of welding slag between the joint surfaces of multiple parts that need to be welded, reduce the cost investment required for cleaning parts during welding, and avoid slag jamming.

[0060] Subsequently, the transmission assembly is controlled to work, the mounting frame 121 is controlled to move left or right, the two welding guns 212 controlled by the rear welding control group move to both sides of the top of the welding cover 10 on the rear side, and the two welding guns 212 controlled by the front welding control group move to both sides of the top of the welding cover 10 on the front side, and the pneumatic cylinder 210 rotatably installed inside the transmission frame 124 to which the piston end of the pneumatic cylinder 22 is fixedly connected is controlled to work and extend, so that the welding gun 212 set at the piston end of the pneumatic cylinder 210 moves to the top of the welding cover 10, and then the pneumatic cylinder 22 is controlled to work, and the welding gun 212 is aligned with the welding The cover 10 is connected to the welding long axis 9 at the seam; then the transmission component is controlled to work to control the left and right positions of the mounting frame 21, and the left and right positions of the welding gun 212 are controlled. At the same time, the pneumatic cylinder 22 and the forward and reverse motor 28 in the driving component are controlled to cooperate to control the front and rear positions and directions of the welding gun 212, so that the welding gun 212 controlled by the pneumatic cylinder 22 moves along a circular trajectory. During this process, the welding gun 212 works to weld the outer top end of the welding long axis 9 to the welding cover 10; similarly, the welding robot arm 2 is controlled to work to weld the outer wall of the welding cover 10 to the pulley connecting frame 4.

[0061] When the welding work of the welding cover 10 is completed, the driving component controls the welding gun 212 to return to its original shape, and the pneumatic cylinder 1 22 controls the front and rear positions of the welding gun 212 to return to their original positions; the transmission component is controlled to make the mounting frame 1 21 move left and right, and the welding gun 212 moves to the top side of the connection seam between the pulley adapter frame 7 and the pulley extension arm 12, and then the two pneumatic cylinders 2 210 in the rear welding control group are controlled to extend and push the two welding guns 212 downward, and the front connection seam and the rear connection seam between the rear pulley adapter frame 7 and the pulley extension arm 12 are welded by the two welding guns 212, and the two pneumatic cylinders 2 21 in the front welding control group are controlled to extend and push the two welding guns 212 downward, and the front connection seam and the rear connection seam between the rear pulley adapter frame 7 and the pulley extension arm 12 are welded by the two welding guns 212. 0 extends and pushes the two welding guns 212 downward, and the front connecting seam and the rear connecting seam between the front pulley adapter frame 7 and the pulley extension arm 12 are welded by the two welding guns 212, and the welding work of the connection between the pulley adapter frame 7 and the pulley extension arm 12 is carried out. It can weld multiple welding seams between the two support arms at one time, shortening the processing cycle and reducing the time cost investment in welding and assembling the double-column lift pulley structure composed of the pulley connecting frame 4 and the two support arms. After the welding work is completed, the four pneumatic cylinders 210 contract and drive the welding guns 212 to move up to the bottom of the mounting frame 1 21 and wait for a while.

[0062] After a period of time, the welding between the pulley adapter frame 7 and the pulley extension arm 12 solidifies, and the preliminary processing of the pulley adapter frame 7 and the pulley extension arm 12 is completed. The pneumatic cylinder 6 334 is controlled to contract to drive the transmission plate 335 to move away from the pulley connecting frame 4. The pneumatic cylinder 3 32 and the two pneumatic cylinders 4 311 are controlled to contract to drive the motion frame 1 31 and the two motion frames 3 312 to move downward, so that the pulley connecting frame 4 has sufficient space to rotate; then, the forward and reverse motor 3 314 is controlled to work forward to drive the transmission plate 316 to rotate 9 0°, the installation bending rod 321, the pneumatic cylinder 5 323, the mounting frame 5 322 and the pulley connecting frame 4 are synchronously rotated 90°, the pulley adapter frame 7 and the pulley extension arm 12 are rotated 90°, so that the upper side weld and the lower side weld between the pulley adapter frame 7 and the pulley extension arm 12 are rotated 90° to become new front side weld and rear side weld. At this time, the two welding arms are set up one above and one below, the two pulley adapter frames 7 and the two pulley extension arms 12 are set up one above and one below, the two front side welds and the two rear side welds are set up and down, and then , the two pneumatic cylinders 22 work, the two transmission frames 24 approach each other, and the pneumatic cylinder 2 210 installed in the transmission frame 24 moves. During this process, the two pneumatic cylinders 210 extend, and the welding guns 212 installed in the two pneumatic cylinders 210 eventually move to the front weld and the two rear welds respectively. Then the pneumatic cylinder 22 stops working, and the pneumatic cylinder 210 continues to push the welding gun 212 downward. The working welding gun 212 moves at the weld of the pulley adapter frame 7 and the pulley extension arm 12. The pulley adapter frame 7 and the pulley extension arm 12 are welded and fixed completely; through the cooperation of the structures such as the pneumatic cylinder 1 22, the pneumatic cylinder 2 210, the forward and reverse motor 314, the transmission plate 316, the pneumatic cylinder 3 32, the telescopic rod 1 33, and the moving frame 1 31, the support arm is automatically flipped over and the welding work is continued without destroying the clamped and fixed state of the support arm, reducing the time cost investment required for manual operation to flip and clamp again, and eliminating the need for staff to operate the support arm after welding, thereby reducing safety hazards.

[0063] Finally, the welding robot arm 2 returns to its original state, controls the forward and reverse motor three 314 to reverse, installs the bending rod 321, the pneumatic cylinder five 323 and the mounting frame five 322 to rotate and reset, controls the pneumatic cylinder five 323 to contract and drives the U-shaped frame 325 and the moving frame five 332 to move left, and after the concave clamping piece 338 moves left and breaks away from the contact with the pulley adapter frame 7, the two forward and reverse motors four 326 work, and the two concave clamping pieces 338 leave the inside of the pulley connecting frame 4. Finally, after holding the pulley connecting frame 4, controls the dual-axis pneumatic cylinder two 318 to contract, and the pulley connecting frame 4 loses its fixation, and the welded double-column lift pulley structure can be removed.

[0064] In the present application, the welding gun 212 used to perform welding tasks in the welding robot 2 can quickly switch between the circular trajectory welding mode and the linear trajectory welding mode, and one of the two pneumatic cylinders 210 in the rear welding control group and the two pneumatic cylinders 210 in the front welding control group can move forward and backward, so that the rear welding control group and the front welding control group can meet the needs of simultaneous welding of welding seams on both sides of parts with different widths; and the two pneumatic cylinders 210 that can move forward and backward are both equipped with welding guns 212, and the two welding guns 212 that can move forward and backward can form a welding arm that can weld both sides of parts with a larger processing span at the same time, thereby ensuring the applicability of the welding robot 2.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A welding robot for assembling a pulley structure of a double-column lift, comprising a processing box (1), wherein the pulley structure of the double-column lift comprises a pulley connecting frame (4), wherein one side of the pulley connecting frame (4) is fixedly connected to two pulley connecting plates (5), and the other side of the pulley connecting frame (4) is provided with two support arms, characterized in that: The processing box (1) is provided with a welding robot arm (2) and a clamping structure (3), the welding robot arm (2) comprises a mounting frame (21) provided on the top of the processing box (1), a transmission assembly provided between the mounting frame (21) and the processing box (1), two pneumatic cylinders (22) fixedly provided on both sides of the mounting frame (21), and a mounting frame (23) and two transmission frames (24) provided inside the mounting frame (21), four pneumatic cylinders (210) are provided inside the mounting frame (21), two of the pneumatic cylinders (210) are provided on two transmission frames (24) respectively and a driving assembly is provided between the two transmission frames (24), the outer walls of the other two pneumatic cylinders (210) are provided through the mounting frame (23), the two pneumatic cylinders (210) are fixedly connected to the mounting frame (23), and the bottom ends of the four pneumatic cylinders (210) are provided with welding guns (212); The clamping structure (3) includes a moving frame (31) provided inside the processing box (1), a clamping assembly provided on the top of the moving frame (31), and a pneumatic cylinder (32) provided on the bottom of the moving frame (31), a double-axis pneumatic cylinder (37) and two pneumatic cylinders (311), wherein the double-axis pneumatic cylinder (37) and the two pneumatic cylinders (311) cooperate to drive a supporting assembly; The clamping assembly includes a side plate (333) fixedly connected to one side of the top of the processing box (1), a pneumatic cylinder six (334) fixedly penetrated on the side plate (333), a transmission plate (335) fixedly connected to the piston end of the pneumatic cylinder six (334), a forward and reverse motor three (314) provided on the other side of the top of the processing box (1), and a transmission disk (316) fixedly connected to the output end of the forward and reverse motor three (314), one side of the transmission plate (335) is fixedly connected to four clamping frames (336), two telescopic rods four (337) are fixedly penetrated on the side plate (333), and the piston end of the telescopic rod four (337) is fixedly connected to the transmission plate (335); A mounting frame 4 (313) is fixedly connected between the outer side of the forward and reverse motor 3 (314) and the processing box (1), a brake 2 (315) is installed on the outer side of the output end of the forward and reverse motor 3 (314), and the brake 2 (315) is fixedly connected to the mounting frame 4 (313). One side of the transmission disk (316) is fixedly connected to a motion frame 4 (317) and two mounting bent rods (321), and the inside of the motion frame 4 (317) is fixedly connected to a dual-axis pneumatic cylinder 2 (318). The two piston ends of the biaxial pneumatic cylinder 2 (318) are fixedly connected to the clamping frame (320), the top and bottom of one side of the moving frame 4 (317) are fixedly connected to the U-shaped plate (319), one end of the mounting bent rod (321) is fixedly connected to the mounting frame 5 (322), the mounting frame 5 (322) is fixedly provided with a pneumatic cylinder 5 (323) and two telescopic rods 3 (324), one end of the pneumatic cylinder 5 (323) is fixedly connected to the U-shaped frame (325), the two telescopic rods The three (324) piston ends are fixedly connected to the six mounting frames (331), the U-shaped frame (325) is fixedly connected to the two six mounting frames (331), and a moving frame (332) is provided on one side of the U-shaped frame (325). The moving frame (332) passes through the two six mounting frames (331) and is slidably connected to the two six mounting frames (331). One end of the moving frame (332) is fixedly connected to an inner concave clamping piece (338). The U-shaped frame (325) is fixedly connected to the inside. A forward and reverse motor four (326) and a brake three (327), wherein the output end of the forward and reverse motor four (326) is fixedly connected to a transmission shaft (328), one end of the transmission shaft (328) passes through the brake three (327) and then extends to the inside of the motion frame five (332), a gear five (329) is fixedly sleeved on the outside of the transmission shaft (328), the gear five (329) is meshed with a rack (330), and the rack (330) is fixedly installed inside the motion frame five (332).

2. A welding robot for assembling pulley structural parts of a two-post lift according to claim 1, characterized in that: The two transmission frames (24) are symmetrically distributed inside the mounting frame (21) and are slidably connected to the mounting frame (21). The piston end of the pneumatic cylinder (22) is fixedly connected to the adjacent transmission frame (24). The mounting frame (23) is arranged between the two transmission frames (24) and is fixedly connected to the mounting frame (21). The piston end of the pneumatic cylinder (210) is fixedly connected to the mounting frame (211). The welding gun (212) is fixedly installed on the mounting frame (211).

3. The welding robot for assembling pulley structural parts of a two-post lift according to claim 1, characterized in that: The transmission assembly comprises a forward and reverse motor 2 (218) fixedly connected to the bottom of the inner cavity of the processing box (1), a gear box (217) fixedly connected to the output end of the forward and reverse motor 2 (218), two shells (219) fixedly connected to both sides of the processing box (1), and two screw rods (214) rotatably installed inside the two shells (219), the two output ends of the gear box (217) are fixedly connected to a gear 4 (216), the outer sides of the two gears 4 (216) are meshed with a gear 3 (215), and the two gears 3 (215) are fixedly installed on the outer sides of the two screw rods (214).

4. The welding robot for assembling pulley structural parts of a two-post lift according to claim 3, characterized in that: The outer sides of the two screw rods (214) are both mounted with a transmission frame three (213) through a nut pair. The transmission frame three (213) is slidably mounted on the housing (219) on the same side. The top of the transmission frame three (213) is fixedly connected to the mounting frame one (21). Rollers (220) are fixedly mounted on both sides of the bottom of the mounting frame one (21). The rollers (220) are against the top of the processing box (1).

5. The welding robot for assembling pulley structural parts of a two-post lift according to claim 1, characterized in that: Each of the driving components includes a transmission frame 2 (25) rotatably connected to the transmission frame 1 (24), a gear 1 (26) fixedly connected to the top of the transmission frame 2 (25), a gear 2 (27) meshed with one side of the gear 1 (26), and a forward and reverse motor 1 (28) arranged at the bottom of the gear 2 (27), the transmission frame 2 (25) is fixedly installed on the outside of the pneumatic cylinder 2 (210) passing through the transmission frame 1 (24), the forward and reverse motor 1 (28) is fixedly installed on one side of the transmission frame 1 (24), the output shaft of the forward and reverse motor 1 (28) is fixedly connected to the gear 2 (27), the output shaft of the forward and reverse motor 1 (28) is fixedly connected to the gear 2 (27), the outer side of the output shaft of the forward and reverse motor 1 (28) is provided with a brake 1 (29), and the brake 1 (29) is fixedly installed on one side of the transmission frame 1 (24).

6. The welding robot for assembling pulley structural parts of a two-post lift according to claim 1, characterized in that: The pneumatic cylinder three (32) is fixedly installed inside the processing box (1), and the piston end of the pneumatic cylinder three (32) is fixedly connected to the moving frame one (31). The bottom of the inner cavity of the processing box (1) is fixedly connected with a telescopic rod one (33), and the piston end of the telescopic rod one (33) is fixedly connected to the moving frame one (31).

7. The welding robot for assembling pulley structural parts of a two-post lift according to claim 1, characterized in that: The support assembly includes two moving frames (35) arranged inside the moving frame (31), a plurality of guide rods (34) are fixedly connected inside the moving frame (31), and the plurality of guide rods (34) all pass through the two moving frames (35), the double-axis pneumatic cylinder (37) is fixedly connected to the bottom of the moving frame (31), and both piston ends of the double-axis pneumatic cylinder (37) are fixedly connected to fixed plates (38), the front fixed plate (38) is fixedly connected to the front moving frame (35), and the rear fixed plate (38) is fixedly connected to the rear moving frame (35). A moving frame three (312) is provided on one side of each of the two moving frames two (35), and the two moving frames three (312) are respectively fixedly connected to the piston ends of two pneumatic cylinder fours (311), and a trolley (310) is fixedly connected to the outside of the pneumatic cylinder four (311), and two telescopic rods two (39) are fixedly connected to the top of the trolley (310), and the piston ends of the two telescopic rods two (39) pass through the adjacent moving frame three (312) and are fixedly connected to the adjacent moving frame two (35), and multiple support shafts (36) are rotatably connected on both sides of the top of the two moving frames two (35).

8. The welding robot for assembling pulley structural parts of a two-post lift according to claim 1, characterized in that: Each of the support arms comprises a pulley adapter frame (7), a bearing (8), a welded long shaft (9), a welded cover (10), a base (11) and a pulley extension arm (12), and a plurality of plug-in circular grooves (6) are formed on the pulley connecting plate (5).

Images