An automated welding device for the fabrication and forming of a wheelchair

Abstract

The present invention relates to the technical field of welding equipment, and particularly to an automatic welding equipment for the manufacturing and forming of wheelchairs, which includes a first workbench, a welding manipulator, and a second workbench. The first workbench and the second workbench are symmetrically arranged on the left and right sides of the welding manipulator. The present invention performs primary positioning and clamping of pipe fittings through multiple positioning grooves, and then uses a clamping mechanism to press and fix the pipe fittings in a downward manner from above, realizing secondary positioning and clamping of the pipe fittings. At the same time, the insertion positioning component and the locking mechanism are used to realize the locking and fixation between the flipping plate and the tabletop, making the tabletop and the flipping plate form an integral whole, further improving the clamping stability of the pipe fittings. The clamping mechanism realizes the integrated clamping of multiple pipe fittings, eliminating the need for multiple positioning and clamping one by one, improving work efficiency. Through the two symmetrically arranged workbenches, alternating and continuous operation improves the welding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and specifically relates to an automatic welding equipment for the fabrication and forming of wheelchairs. Background Art

[0002] A wheelchair is an assistive mobility device used to help people with limited mobility improve their independence and quality of life. A wheelchair mainly consists of a frame, a seat, armrests, pedals, large wheels, small wheels, and additional accessories. The frame of the wheelchair is one of the most important components. The frame of the wheelchair is usually welded by multiple pipe fittings. However, during the welding process of the wheelchair frame, the following problems exist:

[0003] 1. The frame of the wheelchair is welded by multiple independent pipe fittings. In existing equipment, each independent pipe fitting is clamped by a separate clamping mechanism, which requires multiple positioning and clamping operations, and the operation is cumbersome. Since both sides of the connection of the pipe fittings need to be welded, for the convenience of welding, the existing equipment usually clamps the pipe fittings vertically. During the clamping process, it is usually necessary to manually hold the pipe fittings vertically and stably before clamping, which is cumbersome and requires multiple positioning, thus reducing the welding efficiency.

[0004] 2. In existing equipment, the pipe fittings are usually clamped and fixed at a single level by a fixture, and the clamping stability is poor. Therefore, during the welding process, the phenomenon of pipe fitting slippage is likely to occur, reducing the welding quality. In existing equipment, after welding is completed, the finished product needs to be removed, and after re-clamping the new pipe fittings, welding is carried out again. The intermediate blanking and loading take a long time, reducing the welding efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic welding equipment for the fabrication and forming of wheelchairs to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An automatic welding equipment for the fabrication and forming of wheelchairs, including a first workbench, a welding manipulator, and a second workbench. The first workbench and the second workbench are symmetrically arranged on the left and right sides of the welding manipulator. The structures of the first workbench and the second workbench are exactly the same. The second workbench includes a tabletop. An angle adjustment mechanism is arranged on the top of the tabletop. A flipping assembly is arranged on the front side of the top of the tabletop. A positioning mechanism is arranged on the top of the flipping assembly, and a clamping mechanism is arranged on the positioning mechanism. A locking mechanism is arranged below the front side of the positioning mechanism;

[0007] The angle adjustment mechanism includes a driving assembly, an executing assembly, and a plugging and positioning assembly. The executing assembly is arranged on the driving assembly;

[0008] The flipping assembly includes first fixed ear plates symmetrically and fixedly installed on the front side of the top of the tabletop from left to right. A rotating shaft is rotatably connected by the two first fixed ear plates, and two rotating heads are sleeved and fixed symmetrically on the left and right of the rotating shaft.

[0009] The positioning mechanism includes flipping plates fixedly connected to the tops of the two rotating heads. Two first obstacle avoidance holes are symmetrically arranged vertically on the right side of the front side of the flipping plate, and a second obstacle avoidance hole is arranged at the lower left of the front side of the flipping plate.

[0010] The clamping mechanism includes a first fixed plate fixedly installed on the top of the rear side of the flipping plate. A first hydraulic cylinder is fixedly connected to the top of the first fixed plate. The bottom of the output end of the first hydraulic cylinder is fixedly connected to a first linkage plate. A first vertical pressing assembly and a second vertical pressing assembly are respectively arranged on the left and right sides of the bottom of the first linkage plate. A first horizontal pressing assembly is arranged in the middle of the first vertical pressing assembly, and a second horizontal pressing assembly is arranged in the middle of the second vertical pressing assembly.

[0011] Preferably, the driving assembly includes guiding slide rails symmetrically and fixedly connected to the top of the tabletop from left to right. A first slider is slidably connected to each of the two guiding slide rails, and a first mounting plate is fixedly connected to the tops of the two first sliders. A servo motor is fixedly connected to the rear side of the top of the tabletop. The output end of the servo motor is fixedly connected to a lead screw. An active block is threadedly connected to the outside of the lead screw through a ball nut. The top of the active block is fixedly connected to the bottom of the first mounting plate. The front end of the lead screw is rotatably connected to a bearing block, and the bearing block is fixedly installed on the front side of the top of the tabletop. The actuating assembly includes a fixed head fixedly connected to the center of the top of the first mounting plate. A first rotating seat is rotatably connected to the top of the fixed head. A rotating arm is fixedly connected to the top of the first rotating seat. A second rotating seat is fixedly installed on the top of the rotating arm. A first fixed block is rotatably connected to the middle of the second rotating seat through a connecting shaft. The first fixed block is fixedly connected to the lower rear side of the flipping plate. A limiting bottom plate for keeping the bottom of the pipe fitting level is fixedly connected to the bottom of the front side of the flipping plate.

[0012] Preferably, the locking mechanism includes a mounting groove opened at the lower front side of the flipping plate. A second hydraulic cylinder is fixedly connected inside the mounting groove. The output end of the second hydraulic cylinder is fixedly connected to a second fixed plate. The front side of the bottom of the second fixed plate is fixedly connected to a Z-shaped frame. The bottom of the Z-shaped frame is fixedly connected to a second linkage plate. The left and right sides of the bottom of the second linkage plate are symmetrically and fixedly connected with I-shaped plug-in blocks.

[0013] Preferably, the plugging and positioning assembly includes mounting rods symmetrically and fixedly connected to the sides of the first sliders away from the active block. The front ends of the two mounting rods penetrate through a second mounting plate. Two plug pins are symmetrically and fixedly connected to the front ends of the two second mounting plates. The front end face of the mounting rod is fixedly connected to a first locking block. A first locking slot is opened on the front side of the first locking block. Two second fixed blocks are symmetrically and fixedly connected to the front side of the top of the tabletop. A second locking block is fixedly connected to the top of the rear side of the second fixed block.

[0014] Preferably, positioning blocks are fixedly connected to both the left and right sides of the second locking block. The positioning blocks are slidably inserted with the insertion pins, and a second locking slot is provided at the rear side of the top of the second locking block.

[0015] Preferably, support legs are fixedly connected to the four corners of the bottom of the second workbench. A reinforcing cross beam is fixedly connected between two adjacent support legs. Two cushion blocks are symmetrically and fixedly connected to the left and right on the rear side of the top of the tabletop.

[0016] Preferably, a third inverted L-shaped positioning slide rail is fixedly connected to the right end of the front side of the flip plate, a first inverted L-shaped positioning slide rail is fixedly connected to the upper middle part of the front side of the flip plate, a second horizontal positioning slide rail is fixedly connected to the lower middle part of the front side of the flip plate, a second inverted L-shaped positioning slide rail is fixedly connected to the lower left corner of the front side of the flip plate, and a first horizontal positioning slide rail is fixedly connected to the position near the corner at the lower left corner of the front side of the flip plate. A vertical positioning slide rail is fixedly connected to the front side of the flip plate below the first inverted L-shaped positioning slide rail.

[0017] Preferably, two vertical first through grooves are symmetrically formed on the front side of the flip plate, and first limiting sliding grooves are vertically arranged on both the left and right sides of each first through groove. The first vertical pressing assembly includes a first fixed rod fixedly connected to the right side of the bottom of the first linkage plate. A second fixed ear block is fixedly sleeved above the first fixed rod. A second movable pressing plate for pressing and fixing the pipe fittings for making wheelchairs is fixedly connected to the front side of the second fixed ear block. A first fixed ear block is fixedly sleeved below the first fixed rod. A first movable pressing plate is fixedly connected to the front side of the first fixed ear block. Limiting blocks slidably connected to the inside of the first limiting sliding grooves are symmetrically and fixedly connected to both the left and right sides of the first movable pressing plate and the second movable pressing plate. The second vertical pressing assembly includes a second fixed rod fixedly connected to the left side of the first linkage plate. Third fixed ear blocks and fourth fixed ear blocks are symmetrically and fixedly connected to the upper and lower parts of the bottom of the second fixed rod. A third movable pressing plate is fixedly connected to the front side of the third fixed ear block. A fourth movable pressing plate is fixedly connected to the front side of the fourth fixed ear block. Limiting blocks slidably connected to the inside of the first limiting sliding grooves are symmetrically and fixedly connected to both the left and right sides of the rear sides of the third movable pressing plate and the fourth movable pressing plate.

[0018] Preferably, the first horizontal pressing assembly includes second limiting sliding grooves symmetrically formed in the upper and lower parts on the right side of the front side of the flip plate. Second sliders are slidably connected to the inside of the two second limiting sliding grooves. A fifth movable pressing plate is fixedly connected to the front sides of the two second sliders. A first spring is fixedly connected to the right side of the second slider and is fixedly installed inside the second limiting sliding groove. A first connecting rod is fixedly connected to the center of the left side of the fifth movable pressing plate. A first driven wedge block is fixedly connected to the left side of the first connecting rod. A second fixed ear plate is fixedly sleeved in the middle of the first fixed rod. A fixed arm is fixedly connected to the bottom of the second fixed ear plate. A first driving wedge block cooperating with the first driven wedge block is fixedly connected to the right side of the fixed arm.

[0019] Preferably, the second horizontal crimping assembly includes third limiting chutes symmetrically opened at the left front of the flipping plate up and down. Both internal parts of the two third limiting chutes are slidably connected with third sliders. The front sides of the two third sliders are fixedly connected together with a sixth movable pressing plate. The right sides of the third sliders are fixedly connected with second springs, and the second springs are fixedly connected inside the third limiting chutes. The center of the left side of the sixth movable pressing plate is fixedly connected with a second connecting rod, and the left side of the second connecting rod is fixedly connected with a second driven wedge block. A fixing frame is sleeved and fixed in the middle of the second fixing rod, and the bottom of the fixing frame is fixedly connected with a second driving wedge block that cooperates with the second driven wedge block.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. In the present invention, the pipe fitting is subjected to primary positioning and clamping through the positioning mechanism, and the pipe fitting is crimped and fixed through the clamping mechanism to achieve secondary positioning and clamping of the pipe fitting. At the same time, the plug-in positioning assembly and the locking mechanism are used in cooperation to realize the locking and fixing between the flipping plate and the tabletop, so that the tabletop and the flipping plate form an integral whole, improving the stability during the welding of the pipe fitting.

[0022] 2. In the present invention, the flipping plate is adjusted to the horizontal state through the angle adjustment mechanism for clamping the pipe fitting. After directly placing the pipe fitting into the positioning mechanism, the clamping mechanism is used for clamping and fixing, without the need to hold by hand, and the feeding is simple, simplifying the clamping process. After clamping, the angle adjustment mechanism adjusts the flipping plate to the vertical state, which is convenient for welding. Moreover, the clamping mechanism realizes the integrated clamping of multiple pipe fittings, without the need for multiple positioning and clamping one by one, improving the working efficiency.

[0023] 3. The present invention is symmetrically provided with two workbenches, and the two workbenches clamp the pipe fittings in sequence. During the welding process of one workbench, the other workbench is loaded and clamped, and the two work alternately and continuously, shortening the time consumed in the feeding process and the unloading process, and improving the welding efficiency.

[0024] 4. The present invention limits the bottom ends of multiple pipe fittings through the limiting bottom plate, ensuring the flatness of the bottoms of the pipe fittings. With the use of the positioning mechanism, the accuracy of welding positioning is improved. Description of the Drawings

[0025] Figure 1 It is a three-dimensional view of the overall structure of the present invention.

[0026] Figure 2 It is a three-dimensional view of the second workbench of the present invention.

[0027] Figure 3 It is of the present invention Figure 2 Enlarged schematic view of area A.

[0028] Figure 4 For the present invention Figure 2 Schematic enlarged view of area B in

[0029] Figure 5 Stereogram of the tabletop, angle adjustment mechanism and positioning mechanism of the present invention.

[0030] Figure 6 For the present invention Figure 5 Schematic enlarged view of area C in

[0031] Figure 7 Stereogram of the tabletop, clamping mechanism and locking mechanism of the present invention.

[0032] Figure 8 For the present invention Figure 7 Schematic enlarged view of area D in

[0033] Figure 9 For the present invention Figure 7 Schematic enlarged view of area E in

[0034] Figure 10 Exploded view of the pipe fittings for manufacturing the wheelchair frame of the present invention.

[0035] In the figure: 1. First workbench; 2. Welding manipulator; 3. Second workbench; 31. Tabletop; 32. Angle adjustment mechanism; 321. Driving component; 3211. Servo motor; 3212. Guide slide rail; 3213. Lead screw; 3214. First slider; 3215. First mounting plate; 3216. Movable block; 322. Execution component; 3221. First rotating seat; 3222. Fixed head; 3223. Rotating arm; 3224. Second rotating seat; 3225. First fixed block; 323. Spacer block; 324. Insertion positioning component; 3241. Mounting rod; 3242. Second mounting plate; 3243. Insertion pin; 3244. Second fixed block; 3245. First locking block; 3246. First locking slot; 3247. Positioning block; 3248. Second locking block; 3249. Second locking slot; 33. Positioning mechanism; 331. First obstacle avoidance hole; 332. Flipping plate; 333. First inverted L-shaped positioning slide rail; 334. Second inverted L-shaped positioning slide rail; 335. First horizontal positioning slide rail; 336. Second obstacle avoidance hole; 337. Vertical positioning slide rail; 338. Second horizontal positioning slide rail; 339. Third inverted L-shaped positioning slide rail; 34. Clamping mechanism; 341. First hydraulic cylinder; 342. First fixing plate; 343. First linkage plate; 344. First vertical crimping component; 3441. First fixed rod; 3442. First movable pressure plate; 3443. First fixed ear block; 3444. Second fixed ear block; 3445. Second movable pressure plate; 345. Second vertical crimping component; 3451. Third fixed ear block; 3452. Third movable pressure plate; 3453. Second fixed rod; 3454. Fourth fixed ear block; 3455. Fourth movable pressure plate; 346. First limiting chute; 347. First through slot; 348. First horizontal crimping component; 3481. Second fixed ear plate; 3482. Fixed arm; 3483. First active wedge block; 3484. First driven wedge block; 3485. Fifth movable pressure plate; 3486. First spring; 3487. First connecting rod; 3488. Second slider; 3489. Second limiting chute; 349. Second horizontal crimping component; 3491. Fixed frame; 3492. Second driven wedge block; 3493. Second active wedge block; 3494. Third limiting chute; 3495. Third slider; 3496. Second spring; 3497. Second connecting rod; 3498. Sixth movable pressure plate; 35. Limiting bottom plate; 36. Locking mechanism; 361. Second hydraulic cylinder; 362. Second fixing plate; 363. Z-shaped frame; 364. Second linkage plate; 365. I-shaped insertion block; 37. Flipping component; 371. First fixed ear plate; 372. Rotating head; 373. Rotating shaft. Detailed implementation mode

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 ,an automatic welding device for manufacturing and forming a wheelchair, including a first workbench 1, a welding manipulator 2 and a second workbench 3. The first workbench 1 and the second workbench 3 are symmetrically arranged on the left and right sides of the welding manipulator 2. The structures of the first workbench 1 and the second workbench 3 are exactly the same. The second workbench 3 includes a tabletop 31. An angle adjustment mechanism 32 is arranged on the top of the tabletop 31. A flipping assembly 37 is arranged on the front side of the top of the tabletop 31. A positioning mechanism 33 for positioning wheelchair pipe fittings is arranged on the top of the flipping assembly 37. And a clamping mechanism 34 for crimping and fixing the wheelchair pipe fittings is arranged on the positioning mechanism 33. A locking mechanism 36 is arranged below the front side of the positioning mechanism 33. Four corners of the bottom of the second workbench 3 are fixedly connected with support legs, and a reinforcing cross beam is fixedly connected between two adjacent support legs. In the process of using the present invention, the automatic welding of pipe fittings is carried out by using the welding manipulator 2. The angle adjustment mechanism 32 is used to adjust the angle of the positioning mechanism 33. The positioning mechanism 33 is used for positioning the pipe fittings. The clamping mechanism 34 is used for integrally clamping and fixing multiple pipe fittings. The locking mechanism 36 is used to lock the positioning mechanism 33 and the tabletop 31 to form a whole.

[0038] Please refer to Figure 6 ,the flipping assembly 37 includes first fixed ear plates 371 symmetrically and fixedly installed on the front side of the top of the tabletop 31. A rotating shaft 373 is rotatably connected by the two first fixed ear plates 371. Two rotating heads 372 are symmetrically sleeved and fixed on the rotating shaft 373. The flipping assembly 37 is used for the fixation and installation of the positioning mechanism 33.

[0039] Please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 7, the positioning mechanism 33 includes two turnover plates 332 that are fixedly connected together at the top of the rotating head 372. Two first obstacle avoidance holes 331 are symmetrically arranged vertically and horizontally on the right side of the front side of the turnover plate 332, and a second obstacle avoidance hole 336 is arranged at the lower left of the front side of the turnover plate 332; a third inverted L-shaped positioning slide rail 339 is fixedly connected to the right end of the front side of the turnover plate 332, a first inverted L-shaped positioning slide rail 333 is fixedly connected to the upper middle part of the front side of the turnover plate 332, a second horizontal positioning slide rail 338 is fixedly connected to the lower middle part of the front side of the turnover plate 332, a second inverted L-shaped positioning slide rail 334 is fixedly connected to the lower left of the front side of the turnover plate 332, and a first horizontal positioning slide rail 335 is fixedly connected to the position near the corner at the lower left of the front side of the turnover plate 332. A vertical positioning slide rail 337 is fixedly connected to the front side of the turnover plate 332 below the first inverted L-shaped positioning slide rail 333.

[0040] During the use of the positioning mechanism 33, in the initial state, the turnover plate 332 is in a horizontal state, that is, the turnover plate 332 is parallel to the tabletop 31. At this time, the pipe fittings for manufacturing the wheelchair to be processed are sequentially placed into the third inverted L-shaped positioning slide rail 339, the second horizontal positioning slide rail 338, the first inverted L-shaped positioning slide rail 333, the vertical positioning slide rail 337, the first horizontal positioning slide rail 335, and the second inverted L-shaped positioning slide rail 334. Among them, the first inverted L-shaped positioning slide rail 333 and the vertical positioning slide rail 337 jointly position and install the same pipe fitting. In order to ensure the tight fit between the pipe fittings, the placement order of each pipe fitting cannot be reversed, so as to initially position and clamp each pipe fitting by using the positioning mechanism 33. The opening positions of the first obstacle avoidance hole 331 and the second obstacle avoidance hole 336 are the welding positions of the pipe fittings, which is convenient for the welding manipulator 2 to weld the pipe fittings from the front and back sides respectively.

[0041] Please refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 7, The clamping mechanism 34 includes a first fixed plate 342 fixedly installed at the top of the rear side of the flipping plate 332. A first hydraulic cylinder 341 is fixedly connected to the top of the first fixed plate 342. The bottom of the output end of the first hydraulic cylinder 341 is fixedly connected to a first linkage plate 343. On the left and right sides of the bottom of the first linkage plate 343, a first vertical crimping component 344 and a second vertical crimping component 345 are respectively arranged. In the middle of the first vertical crimping component 344, a first horizontal crimping component 348 is arranged. In the middle of the second vertical crimping component 345, a second horizontal crimping component 349 is arranged. On the front side of the flipping plate 332, two vertical first through grooves 347 are symmetrically opened on the left and right. And on both the left and right sides of each first through groove 347, vertically arranged first limiting sliding grooves 346 are opened. The first vertical crimping component 344 includes a first fixed rod 3441 fixedly connected to the right side of the bottom of the first linkage plate 343. A second fixed ear block 3444 is sleeved and fixed above the first fixed rod 3441. A second movable pressure plate 3445 for crimping and fixing the pipe fittings of the wheelchair is fixedly connected to the front side of the second fixed ear block 3444. A first fixed ear block 3443 is sleeved and fixed below the first fixed rod 3441. A first movable pressure plate 3442 is fixedly connected to the front side of the first fixed ear block 3443. On both the first movable pressure plate 3442 and the second movable pressure plate 3445, limiting blocks slidably connected inside the first limiting sliding groove 346 are symmetrically fixedly connected on the left and right. The second vertical crimping component 345 includes a second fixed rod 3453 fixedly connected to the left side of the first linkage plate 343. A third fixed ear block 3451 and a fourth fixed ear block 3454 are symmetrically fixed above and below the bottom of the second fixed rod 3453. A third movable pressure plate 3452 is fixedly connected to the front side of the third fixed ear block 3451. A fourth movable pressure plate 3455 is fixedly connected to the front side of the fourth fixed ear block 3454. On the rear sides of both the third movable pressure plate 3452 and the fourth movable pressure plate 3455, limiting blocks slidably connected inside the first limiting sliding groove 346 are symmetrically fixedly connected on the left and right. Both the first fixed rod 3441 and the second fixed rod 3453 are located inside the corresponding first through groove 347.

[0042] Please refer to Figure 2 and Figure 3, the first horizontal crimping assembly 348 includes second limit sliding grooves 3489 symmetrically formed in the upper and lower sides at the right front of the flipping plate 332. Second sliding blocks 3488 are slidably connected to the interiors of the two second limit sliding grooves 3489. A fifth movable pressure plate 3485 is fixedly connected to the common front side of the two second sliding blocks 3488. A first spring 3486 is fixedly connected to the right side of the second sliding block 3488. The first spring 3486 is fixedly installed in the second limit sliding groove 3489. A first connecting rod 3487 is fixedly connected to the center of the left side of the fifth movable pressure plate 3485. A first driven wedge 3484 is fixedly connected to the left side of the first connecting rod 3487. A second fixed ear plate 3481 is sleeved and fixed in the middle of the first fixed rod 3441. A fixed arm 3482 is fixedly connected to the bottom of the second fixed ear plate 3481. A first driving wedge 3483 that cooperates with the first driven wedge 3484 is fixedly connected to the right side of the fixed arm 3482.

[0043] Please refer to Figure 2 , Figure 4 and Figure 7 , the second horizontal crimping assembly 349 includes third limit sliding grooves 3494 symmetrically formed in the upper and lower sides at the left front of the flipping plate 332. Third sliding blocks 3495 are slidably connected to the interiors of the two third limit sliding grooves 3494. A sixth movable pressure plate 3498 is fixedly connected to the common front side of the two third sliding blocks 3495. A second spring 3496 is fixedly connected to the right side of the third sliding block 3495. The second spring 3496 is fixedly connected in the third limit sliding groove 3494. A second connecting rod 3497 is fixedly connected to the center of the left side of the sixth movable pressure plate 3498. A second driven wedge 3492 is fixedly connected to the left side of the second connecting rod 3497. A fixing bracket 3491 is sleeved and fixed in the middle of the second fixed rod 3453. A second driving wedge 3493 that cooperates with the second driven wedge 3492 is fixedly connected to the bottom of the fixing bracket 3491.

[0044] During the use of the clamping mechanism 34, after multiple pipe fittings are placed into the positioning mechanism 33, at this time, both the positioning mechanism 33 and the clamping mechanism 34 are in a horizontal state. Start the first hydraulic cylinder 341. The output end of the first hydraulic cylinder 341 drives the first linkage plate 343 to move forward, synchronously driving the first fixed rod 3441 to move forward. When the first fixed rod 3441 moves forward, it drives the second movable pressing plate 3445 thereon to press and fix the pipe fitting on the first inverted L-shaped positioning slide rail 333. The first movable pressing plate 3442 synchronously presses and fixes the pipe fitting on the second horizontal positioning slide rail 338. At the same time, the second fixed ear plate 3481 and the fixed arm 3482 thereon move forward, and then synchronously drive the first active wedge block 3483 to squeeze the first driven wedge block 3484, driving the first driven wedge block 3484 and the first connecting rod 3487 thereon to move to the right. At this time, the fifth movable pressing plate 3485 and the second slider 3488 thereon move to the right, and then compress the first spring 3486. Finally, the fifth movable pressing plate 3485 presses and fixes the pipe fitting on the third inverted L-shaped positioning slide rail 339. The forward movement of the second fixed rod 3453 synchronously drives the third movable pressing plate 3452 to press and fix the pipe fitting on the second inverted L-shaped positioning slide rail 334, and the fourth movable pressing plate 3455 presses and fixes the pipe fitting on the first horizontal positioning slide rail 335. And the second fixed rod 3453 synchronously drives the fixed frame 3491 and the second active wedge block 3493 thereon to move forward. The second active wedge block 3493 squeezes and drives the second driven wedge block 3492 and the second connecting rod 3497 thereon to move to the right, synchronously driving the sixth movable pressing plate 3498 and the third slider 3495 thereon to move to the right, and then squeezing the second spring 3496. The sixth movable pressing plate 3498 is used to press and fix the side wall of the pipe fitting on the first inverted L-shaped positioning slide rail 333, realizing the integrated positioning and clamping of multiple pipe fittings, without the need for multiple positioning and clamping, with high work efficiency. And arc-shaped grooves matching the pipe fittings are provided on the first movable pressing plate 3442, the second movable pressing plate 3445, the third movable pressing plate 3452, the fourth movable pressing plate 3455, the fifth movable pressing plate 3485 and the sixth movable pressing plate 3498. The length of the third slider 3495 is longer than the width of the first limit chute 346, avoiding the problem that the third slider 3495 slides out of the first limit chute 346 when sliding.

[0045] Please refer to Figure 1 and Figure 5, the angle adjustment mechanism 32 includes a driving component 321, an execution component 322, and a plug-in positioning component 324. The execution component 322 is arranged on the driving component 321. The driving component 321 includes guiding slide rails 3212 symmetrically and fixedly connected to the top of the table 31 on the left and right. A first slider 3214 is slidably connected to each of the two guiding slide rails 3212, and a first mounting plate 3215 is fixedly connected to the tops of the two first sliders 3214. A servo motor 3211 is fixedly connected to the rear side of the top of the table 31. A lead screw 3213 is fixedly connected to the output end of the servo motor 3211. A movable block 3216 is threadedly connected to the outer wall of the lead screw 3213 through a ball nut. The top of the movable block 3216 is fixedly connected to the bottom of the first mounting plate 3215. The front end of the lead screw 3213 is rotatably connected to a bearing block, and the bearing block is fixedly installed on the front side of the top of the table 31. The execution component 322 includes a fixed head 3222 fixedly connected to the center of the top of the first mounting plate 3215. A first rotating seat 3221 is rotatably connected to the top of the fixed head 3222. A rotating arm 3223 is fixedly connected to the top of the first rotating seat 3221. A second rotating seat 3224 is fixedly installed on the top of the rotating arm 3223. A first fixed block 3225 is rotatably connected to the middle of the second rotating seat 3224 through a connecting shaft. The first fixed block 3225 is fixedly connected to the lower rear side of the rear side of the turning plate 332. A limiting bottom plate 35 for keeping the bottom of the pipe fitting flush is fixedly connected to the bottom of the front side of the turning plate 332. Two cushion blocks 323 are symmetrically and fixedly connected to the left and right on the rear side of the top of the table 31.

[0046] Please refer to Figure 5 , Figure 6 and Figure 9 , the plug-in positioning component 324 includes mounting rods 3241 symmetrically and fixedly connected to the sides of the first sliders 3214 away from the movable block 3216 on the left and right. The front ends of the two mounting rods 3241 are fixedly penetrated through a second mounting plate 3242. Two plug pins 3243 are symmetrically and fixedly connected to the front ends of the two second mounting plates 3242 on the left and right. A first locking block 3245 is fixedly connected to the front end face of the mounting rod 3241. A first locking slot 3246 is opened on the front side of the first locking block 3245. Two second fixed blocks 3244 are symmetrically and fixedly connected to the left and right on the front side of the top of the table 31. A second locking block 3248 is fixedly connected to the top rear side of the second fixed block 3244. Positioning blocks 3247 are fixedly connected to both the left and right sides of the second locking block 3248. The positioning blocks 3247 and the plug pins 3243 are slidably inserted between each other. A second locking slot 3249 is opened on the rear side of the top of the second locking block 3248.

[0047] Please refer to Figure 7 , Figure 8 and Figure 9The locking mechanism 36 includes a mounting groove provided at the lower front side of the flip plate 332, a No. 2 hydraulic cylinder 361 is fixedly connected inside the mounting groove, a No. 2 fixed plate 362 is fixedly connected to the output end of the No. 2 hydraulic cylinder 361, a Z-shaped frame 363 is fixedly connected to the front side of the bottom of the No. 2 fixed plate 362, a No. 2 linkage plate 364 is fixedly connected to the bottom of the Z-shaped frame 363, and an I-shaped plug-in block 365 is fixedly connected to the bottom of the No. 2 linkage plate 364 symmetrically.

[0048] When the angle adjustment mechanism 32 is in use, after the multiple pipe fittings are integrated and stably clamped, the servo motor 3211 is started at this time, and the servo motor 3211 drives the screw rod 3213 to rotate, and synchronously drives the movable block 3216 and the No. 1 mounting plate 3215 thereon to move forward, and at the same time, the No. 1 slider 3214 slides forward along the guide rail 3212, and then synchronously drives the fixed head 3222 and the No. 1 rotating seat 3221 thereon to move forward, and then synchronously drives the rotating arm 3223 and the No. 2 rotating seat 3224 thereon to move forward, and then synchronously drives the No. 1 fixed block 3225 to move forward, and then synchronously drives the flip plate 332 to flip forward around the rotating shaft 373 until the flip plate 332 moves to a perpendicular state with the table top 31, so that the flip plate 332 and the pipe fittings fixed thereon are flipped from a horizontal state to a vertical state, which is convenient for welding the pipe fittings, and as the No. 1 slider 3214 moves forward, it synchronously drives the mounting rod 3241 and the No. 2 mounting plate 3 242 moves forward, and then synchronously drives the No. 1 locking block 3245 and the plug pin 3243 to move forward until the No. 1 locking block 3245 fits with the No. 2 locking block 3248. At this time, the plug pin 3243 is plugged into the interior of the positioning block 3247 to achieve the limit fixation between the No. 1 locking block 3245 and the No. 2 locking block 3248. At this time, the No. 1 locking slot 3246 and the No. 2 locking slot 3249 form an I-shaped connecting groove, the No. 2 mounting plate 3242, and then start the No. 2 hydraulic cylinder 361, the output end of the No. 2 hydraulic cylinder 361 moves downward, synchronously driving the No. 2 fixed plate 362 and the Z-shaped frame 363 thereon to move downward, and then synchronously driving the No. 2 linkage plate 364 and the I-shaped plug-in block 365 thereon to move downward, and the I-shaped plug-in block 365 is plugged into the connecting groove formed by the No. 1 locking slot 3246 and the No. 2 locking slot 3249, forming the table top 31 and the flip plate 332 into a whole, thereby improving the stability during welding, and then using the welding robot 2 for automatic welding.

[0049] Working principle: During the use of the present invention, first, with the turning plate 332 in a horizontal state, the pipe fittings to be welded are sequentially placed into the third inverted L-shaped positioning slide rail 339, the second horizontal positioning slide rail 338, the first inverted L-shaped positioning slide rail 333, the vertical positioning slide rail 337, the first horizontal positioning slide rail 335, and the second inverted L-shaped positioning slide rail 334. The pipe fittings are placed horizontally, with simple operation, achieving primary positioning and clamping of the pipe fittings. Subsequently, the clamping mechanism 34 is used to integrally clamp and fix multiple pipe fittings, eliminating the need for individual clamping, with high working efficiency. The clamping mechanism 34 realizes secondary positioning and clamping of the pipe fittings, improving the stability of the pipe fitting clamping. After the clamping is completed, the angle adjustment mechanism 32 flips the pipe fittings on the turning plate 332 by 90 degrees to a vertical state, facilitating the welding of the pipe fittings. After the turning plate 332 is flipped by 90 degrees, the locking mechanism 36 connects the turning plate 332 and the tabletop 31 to form a whole, further improving the stability of the turning plate 332 and the pipe fittings clamped thereon. Moreover, the structures of the first workbench 1 and the second workbench 3 are completely the same, and the first workbench 1 and the second workbench 3 work alternately. When the first workbench 1 is welding, the second workbench 3 performs loading and unloading, achieving continuous operation and improving the welding efficiency.

[0050] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An automated welding device for manufacturing and molding a wheelchair, comprising a first workbench (1), a welding manipulator (2) and a second workbench (3), characterized in that: A first workbench (1) and a second workbench (3) are symmetrically arranged on the left and right sides of the welding manipulator (2); the first workbench (1) and the second workbench (3) are completely identical in structure; the second workbench (3) comprises a table top (31); an angle adjustment mechanism (32) is arranged on the top of the table top (31); a flip assembly (37) is arranged on the front side of the top of the table top (31); a positioning mechanism (33) is arranged on the top of the flip assembly (37); the angle adjustment mechanism (32) is used to adjust the angle of the positioning mechanism (33); and a clamping mechanism (34) is arranged on the positioning mechanism (33) for crimping and fixing the wheelchair pipe fitting; a locking mechanism (36) is arranged on the lower front side of the positioning mechanism (33); and the locking mechanism (36) is used to lock the positioning mechanism (33) and the table top; The angle adjustment mechanism (32) comprises a driving component (321), an actuating component (322) and a plug-in positioning component (324); the plug-in positioning component (324) and the locking mechanism (36) cooperate to achieve locking and fixing between the flip plate and the table top; the actuating component (322) is arranged on the driving component (321); The flip assembly (37) comprises a first fixed ear plate (371) fixedly mounted symmetrically on the front side of the top of the table (31); the two first fixed ear plates (371) are rotatably connected to a rotating shaft (373); and two rotating heads (372) are symmetrically sleeved and fixed on the rotating shaft (373); The positioning mechanism (33) comprises two flip plates (332) fixedly connected together on the top of the rotating head (372), two first obstacle avoidance holes (331) are symmetrically opened on the right front side of the flip plate (332), and a second obstacle avoidance hole (336) is opened on the lower left front side of the flip plate (332); The clamping mechanism (34) comprises a No. 1 fixed plate (342) fixedly mounted on the top of the rear side of the flip plate (332); a No. 1 hydraulic cylinder (341) is fixedly connected to the top of the No. 1 fixed plate (342); a No. 1 linkage plate (343) is fixedly connected to the bottom of the output end of the No. 1 hydraulic cylinder (341); a No. 1 vertical crimping assembly (344) and a No. 2 vertical crimping assembly (345) are respectively arranged on the left and right sides of the bottom of the No. 1 linkage plate (343); a No. 1 horizontal crimping assembly (348) is arranged in the middle of the No. 1 vertical crimping assembly (344); and a No. 2 horizontal crimping assembly (349) is arranged in the middle of the No. 2 vertical crimping assembly (345).

2. The wheelchair manufacturing and molding automated welding equipment according to claim 1, characterized in that: The driving assembly (321) comprises guide rails (3212) fixedly connected to the top of the table (31) in a left-right symmetrical manner, a No. 1 slider (3214) being slidably connected to the two guide rails (3212), and a No. 1 mounting plate (3215) being fixedly connected to the tops of the two No. 1 sliders (3214), a servo motor (3211) being fixedly connected to the rear side of the top of the table (31), a lead screw (3213) being fixedly connected to the output end of the servo motor (3211), a movable block (3216) being threadedly connected to the outside of the lead screw (3213) via a ball nut, a top of the movable block (3216) being fixedly connected to the bottom of the No. 1 mounting plate (3215), a front end of the lead screw (3213) being rotatably connected to a bearing block, and the bearing block The block is fixedly mounted on the front side of the top of the table (31), the actuator assembly (322) comprises a fixed head (3222) fixedly connected to the top center of the No. 1 mounting plate (3215), the top of the fixed head (3222) is rotatably connected to the No. 1 rotating seat (3221), the top of the No. 1 rotating seat (3221) is fixedly connected to a rotating arm (3223), the top of the rotating arm (3223) is fixedly mounted with a No. 2 rotating seat (3224), the middle of the No. 2 rotating seat (3224) is rotatably connected to the No. 1 fixed block (3225) via a connecting shaft, the No. 1 fixed block (3225) is fixedly connected to the rear side and the bottom of the flip plate (332), and the bottom of the front side of the flip plate (332) is fixedly connected to a limiting bottom plate (35) for keeping the bottom of the pipe fitting flush.

3. The wheelchair manufacturing and molding automated welding equipment according to claim 1, characterized in that: The locking mechanism (36) comprises a mounting groove provided at the lower front side of the flip plate (332), a No. 2 hydraulic cylinder (361) being fixedly connected inside the mounting groove, a No. 2 fixed plate (362) being fixedly connected to the output end of the No. 2 hydraulic cylinder (361), a Z-shaped frame (363) being fixedly connected to the front side of the bottom of the No. 2 fixed plate (362), a No. 2 linkage plate (364) being fixedly connected to the bottom of the Z-shaped frame (363), and an I-shaped plug-in block (365) being fixedly connected to the bottom of the No. 2 linkage plate (364) in a left-right symmetrical manner.

4. The wheelchair manufacturing and molding automated welding equipment according to claim 2, characterized in that: The plug-in positioning assembly (324) comprises a mounting rod (3241) fixedly connected to a side of a No. 1 slider (3214) away from the movable block (3216) in a symmetrical manner, a No. 2 mounting plate (3242) being fixedly passed through the front ends of the two mounting rods (3241), two plug pins (3243) being fixedly connected to the front ends of the two No. 2 mounting plates (3242) in a symmetrical manner, a No. 1 locking block (3245) being fixedly connected to the front end faces of the front ends of the mounting rods (3241), a No. 1 locking slot (3246) being provided on the front side of the No. 1 locking block (3245), two No. 2 fixing blocks (3244) being fixedly connected to the front side of the top of the table top (31) in a symmetrical manner, and a No. 2 locking block (3248) being fixedly connected to the top of the rear side of the No. 2 fixing block (3244).

5. The wheelchair manufacturing and molding automated welding equipment according to claim 4, characterized in that: The left and right sides of the No. 2 locking block (3248) are fixedly connected with positioning blocks (3247), the positioning blocks (3247) and the plug pins (3243) are slidably plugged, and a No. 2 locking slot (3249) is provided on the top rear side of the No. 2 locking block (3248).

6. The wheelchair manufacturing and molding automated welding equipment according to claim 1, characterized in that: The bottom four corners of the second workbench (3) are all fixedly connected with support legs, and a reinforcing crossbeam is fixedly connected between two adjacent support legs. Two cushion blocks (323) are fixedly connected symmetrically on the left and right sides of the top rear side of the tabletop (31).

7. The wheelchair manufacturing and molding automated welding equipment according to claim 1, characterized in that: The right end of the front side of the flip plate (332) is fixedly connected to a third inverted L-shaped positioning rail (339), the middle and upper part of the front side of the flip plate (332) is fixedly connected to a first inverted L-shaped positioning rail (333), the middle and lower part of the front side of the flip plate (332) is fixedly connected to a second horizontal positioning rail (338), the lower left part of the front side of the flip plate (332) is fixedly connected to a second inverted L-shaped positioning rail (334), and the lower left part of the front side of the flip plate (332) is fixedly connected to a first horizontal positioning rail (335), and the front side of the flip plate (332) is fixedly connected to a vertical positioning rail (337) below the first inverted L-shaped positioning rail (333).

8. The wheelchair manufacturing and molding automated welding equipment according to claim 7, characterized in that: The front side surface of the flip plate (332) is symmetrically provided with two vertical No. 1 through grooves (347), and each No. 1 through groove (347) is provided with a vertically arranged No. 1 limiting sliding groove (346) on both sides. The No. 1 vertical crimping assembly (344) comprises a No. 1 fixed rod (3441) fixedly connected to the right side of the bottom of the No. 1 linkage plate (343), a No. 2 fixed ear block (3444) is sleeved and fixed on the top of the No. 1 fixed rod (3441), a No. 2 movable pressing plate (3445) for crimping and fixing the wheelchair pipe fittings is fixedly connected to the front side of the No. 2 fixed ear block (3444), a No. 1 fixed ear block (3443) is sleeved and fixed on the bottom of the No. 1 fixed rod (3441), a No. 1 movable pressing plate (3442) is fixedly connected to the front side of the No. 1 fixed ear block (3443), and the No. 1 movable pressing plate The second movable pressing plate (3442) and the second movable pressing plate (3445) are both symmetrically fixedly connected with a limit block slidably connected to the inside of the first limit sliding groove (346), the second vertical crimping assembly (345) includes a second fixed rod (3453) fixedly connected to the left side of the first linkage plate (343), a third fixed ear block (3451) and a fourth fixed ear block (3454) symmetrically fixed at the bottom of the second fixed rod (3453), the front side of the third fixed ear block (3451) is fixedly connected with the third movable pressing plate (3452), the front side of the fourth fixed ear block (3454) is fixedly connected with the fourth movable pressing plate (3455), and the rear sides of the third movable pressing plate (3452) and the fourth movable pressing plate (3455) are both symmetrically fixedly connected with a limit block slidably connected to the inside of the first limit sliding groove (346).

9. The wheelchair manufacturing and molding automated welding equipment according to claim 8, characterized in that: The first horizontal crimping assembly (348) includes a second limiting slide groove (3489) symmetrically arranged on the front right side of the flip plate (332), the two second limiting slide grooves (3489) are slidably connected with the second slider (3488) inside, the front sides of the two second sliders (3488) are commonly fixedly connected with a fifth movable pressing plate (3485), the right side of the second slider (3488) is fixedly connected with a first spring (3486), and the first spring (3486) is fixedly installed in the second limiting slide groove (3489). Inside, the left center of the No. 5 movable pressure plate (3485) is fixedly connected to the No. 1 connecting rod (3487), the left side of the No. 1 connecting rod (3487) is fixedly connected to the No. 1 driven wedge (3484), the middle part of the No. 1 fixed rod (3441) is sleeved and fixed with the No. 2 fixed ear plate (3481), the bottom of the No. 2 fixed ear plate (3481) is fixedly connected to the fixed arm (3482), and the right side of the fixed arm (3482) is fixedly connected to the No. 1 active wedge (3483) that cooperates with the No. 1 driven wedge (3484).

10. The wheelchair manufacturing and molding automated welding equipment according to claim 1, characterized in that: The second horizontal crimping assembly (349) comprises a third limiting slide groove (3494) symmetrically arranged on the left side of the front side of the flip plate (332), two third limiting slide grooves (3494) are slidably connected with a third slider (3495) inside, the front sides of the two third sliders (3495) are commonly fixedly connected with a sixth movable pressing plate (3498), the right side of the third slider (3495) is fixedly connected with a second spring (3496), and the second spring (3496) is fixedly connected to the third slider (3495). The movable pressure plate (3498) is fixedly connected inside the No. 3 limiting slide groove (3494), the No. 2 connecting rod (3497) is fixedly connected to the center of the left side, the No. 2 connecting rod (3497) is fixedly connected to the left side with the No. 2 driven wedge (3492), the No. 2 fixed rod (3453) is sleeved and fixed with a fixed frame (3491) in the middle part, and the bottom of the fixed frame (3491) is fixedly connected with the No. 2 active wedge (3493) matched with the No. 2 driven wedge (3492).

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