Automatic welding equipment for wheelchair manufacturing, forming and machining

Abstract

The invention relates to the technical field of welding equipment, in particular to wheelchair manufacturing, forming and machining automatic welding equipment which comprises a first workbench, a welding manipulator and a second workbench, and the first workbench and the second workbench are symmetrically arranged on the left side and the right side of the welding manipulator; a pipe fitting is subjected to first-stage positioning and clamping through the multiple positioning grooves, then the pipe fitting is pressed and fixed through the clamping mechanism in a top-down pressing mode, second-stage positioning and clamping of the pipe fitting are achieved, meanwhile, locking and fixing between the overturning plate and the table top are achieved through the inserting and positioning assembly and the locking mechanism, and the pipe fitting can be conveniently and rapidly clamped. According to the pipe fitting welding device, the table top and the overturning plate are integrated, the clamping stability of the pipe fittings is further improved, integrated clamping of the multiple pipe fittings is achieved through the clamping mechanism, multiple times of positioning and clamping are not needed one by one, the working efficiency is improved, and the welding efficiency is improved through alternate continuous operation of the two symmetrically-arranged workbenches.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to automated welding equipment for wheelchair manufacturing and forming. 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 is mainly composed of a frame, seat, armrests, pedals, large wheels, small wheels, and additional accessories. The frame of a wheelchair is one of the most important components. The frame of a wheelchair is usually welded from multiple pipes. However, during the welding process of a wheelchair frame, the following problems exist:

[0003] 1. The frame of the wheelchair is welded from multiple independent pipes. In the existing equipment, each independent pipe is clamped by a separate clamping mechanism, which requires multiple positioning and clamping, and the operation is cumbersome. Since both sides of the pipe connection need to be welded, in order to facilitate welding, the existing equipment usually clamps the pipe vertically. During the clamping process, the pipe is usually manually stabilized vertically and then clamped. The operation is cumbersome and requires multiple positioning, which reduces the welding efficiency.

[0004] 2. In the existing equipment, the pipe fittings are usually clamped and fixed at a single level by a clamp, and the clamping stability is poor, so the pipe fittings are prone to slip during the welding process, which reduces the quality of welding. In addition, in the existing equipment, after welding is completed, the finished product needs to be removed, and the new pipe fittings need to be re-clamped and welded again. The intermediate unloading and loading takes a long time, which reduces the welding efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide an automated welding device for wheelchair manufacturing and molding to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automated welding device for manufacturing and forming a wheelchair, comprising a No. 1 workbench, a welding manipulator and a No. 2 workbench, wherein the No. 1 workbench and the No. 2 workbench are symmetrically arranged on the left and right sides of the welding manipulator, and the structures of the No. 1 workbench and the No. 2 workbench are completely the same, and the No. 2 workbench comprises a table, an angle adjustment mechanism is arranged on the top of the table, a flip assembly is arranged on the front side of the top of the table, a positioning mechanism is arranged on the top of the flip assembly, a clamping mechanism is arranged on the positioning mechanism, and a locking mechanism is arranged on the lower front side of the positioning mechanism;

[0007] The angle adjustment mechanism includes a driving component, an execution component and a plug-in positioning component, and the execution component is arranged on the driving component;

[0008] The flip assembly includes a No. 1 fixed ear plate fixedly mounted on the front side of the top of the table symmetrically, the two No. 1 fixed ear plates are connected to a rotating shaft for common rotation, and two rotating heads are fixedly mounted on the rotating shaft symmetrically.

[0009] The positioning mechanism includes two flip plates fixedly connected together on the top of the rotating head, two No. 1 obstacle avoidance holes are symmetrically opened on the right side of the front side of the flip plate, and a No. 2 obstacle avoidance hole is opened on the lower left side of the front side of the flip plate;

[0010] The clamping mechanism includes a No. 1 fixed plate fixedly installed on the top of the rear side of the flip plate, a No. 1 hydraulic cylinder is fixedly connected to the top of the No. 1 fixed plate, a No. 1 linkage plate is fixedly connected to the bottom of the output end of the No. 1 hydraulic cylinder, a No. 1 vertical crimping assembly and a No. 2 vertical crimping assembly are respectively arranged on the left and right sides of the bottom of the No. 1 linkage plate, a No. 1 horizontal crimping assembly is arranged in the middle of the No. 1 vertical crimping assembly, and a No. 2 horizontal crimping assembly is arranged in the middle of the No. 1 vertical crimping assembly.

[0011] Preferably, the driving assembly includes guide rails that are symmetrically fixedly connected to the top of the table top, the two guide rails are slidably connected to a No. 1 slider, and the tops of the two No. 1 sliders are commonly fixedly connected to a No. 1 mounting plate, a servo motor is fixedly connected to the rear side of the table top, the output end of the servo motor is fixedly connected to a lead screw, the outside of the lead screw is threadedly connected to a movable block through a ball nut, the top of the movable block is fixedly connected to the bottom of the No. 1 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 table top, the execution assembly includes a fixed head fixedly connected to the top center of the No. 1 mounting plate, the top of the fixed head is rotatably connected to a No. 1 rotating seat, the top of the No. 1 rotating seat is fixedly connected to a rotating arm, the top of the rotating arm is fixedly installed with a No. 2 rotating seat, the middle part of the No. 2 rotating seat is rotatably connected to a No. 1 fixed block through a connecting shaft, the No. 1 fixed block is fixedly connected to the lower rear side of the flip plate, and the front bottom of the flip plate is fixedly connected to a limiting base plate for keeping the bottom of the pipe fitting flush.

[0012] Preferably, the locking mechanism includes a mounting groove provided at the lower front side of the flip plate, a No. 2 hydraulic cylinder is fixedly connected inside the mounting groove, a No. 2 fixed plate is fixedly connected to the output end of the No. 2 hydraulic cylinder, a Z-shaped frame is fixedly connected to the front side of the bottom of the No. 2 fixed plate, a No. 2 linkage plate is fixedly connected to the bottom of the Z-shaped frame, and an I-shaped plug-in block is symmetrically fixedly connected to the bottom of the No. 2 linkage plate.

[0013] Preferably, the plug-in positioning assembly includes a mounting rod symmetrically fixedly connected to the side of the No. 1 slider away from the movable block, a No. 2 mounting plate is fixedly passed through the front ends of the two mounting rods, two plug pins are symmetrically fixedly connected to the front ends of the two No. 2 mounting plates, a No. 1 locking block is fixedly connected to the front end faces of the front ends of the mounting rods, a No. 1 locking slot is provided on the front side of the No. 1 locking block, two No. 2 fixing blocks are symmetrically fixedly connected to the front side of the top of the table top, and a No. 2 locking block is fixedly connected to the top of the rear side of the No. 2 fixing block.

[0014] Preferably, the left and right sides of the No. 2 locking block are fixedly connected with positioning blocks, the positioning blocks are slidably plugged with the plug pins, and a No. 2 locking slot is opened on the top rear side of the No. 2 locking block.

[0015] Preferably, the four corners of the bottom of the second workbench are fixedly connected with support legs, a reinforcing crossbeam is fixedly connected between two adjacent support legs, and two pads are fixedly connected symmetrically on the left and right sides of the top rear side of the table top.

[0016] Preferably, the right end of the front side of the flip plate is fixedly connected with an inverted L-shaped positioning rail No. 3, the middle and upper part of the front side of the flip plate is fixedly connected with an inverted L-shaped positioning rail No. 1, the middle and lower part of the front side of the flip plate is fixedly connected with a horizontal positioning rail No. 2, the lower left part of the front side of the flip plate is fixedly connected with an inverted L-shaped positioning rail No. 2, and the lower left part of the front side of the flip plate near the corner is fixedly connected with a horizontal positioning rail No. 1, and the front side of the flip plate is fixedly connected with a vertical positioning rail below the inverted L-shaped positioning rail No. 1.

[0017] Preferably, the front side surface of the flip plate is symmetrically provided with two vertical No. 1 through grooves, and each No. 1 through groove is provided with a vertically arranged No. 1 limiting sliding groove on the left and right sides, and the No. 1 vertical crimping assembly includes a No. 1 fixed rod fixedly connected to the right side of the bottom of the No. 1 linkage plate, a No. 2 fixed ear block is sleeved and fixed above the No. 1 fixed rod, a No. 2 movable pressing plate for crimping and fixing the wheelchair pipe fittings is fixedly connected to the front side of the No. 2 fixed ear block, a No. 1 fixed ear block is sleeved and fixed below the No. 1 fixed rod, and a No. 1 movable pressing plate is fixedly connected to the front side of the No. 1 fixed ear block, The No. 1 movable pressure plate and the No. 2 movable pressure plate are both symmetrically fixedly connected with limit blocks slidably connected to the inside of the No. 1 limit slide groove, the No. 2 vertical crimping assembly includes a No. 2 fixed rod fixedly connected to the left side of the No. 1 linkage plate, a No. 3 fixed ear block and a No. 4 fixed ear block symmetrically fixed at the bottom of the No. 2 fixed rod, the No. 3 fixed ear block is fixedly connected to the front side of the No. 3 movable pressure plate, the No. 4 fixed ear block is fixedly connected to the front side of the No. 4 movable pressure plate, and the No. 3 movable pressure plate and the No. 4 movable pressure plate are both symmetrically fixedly connected to the limit blocks slidably connected to the inside of the No. 1 limit slide groove on the rear sides.

[0018] Preferably, the No. 1 horizontal crimping assembly includes a No. 2 limiting slide groove that is symmetrically opened on the right side of the front side of the flip plate, the two No. 2 limiting slide grooves are both slidably connected with No. 2 sliders, the front sides of the two No. 2 sliders are commonly fixedly connected with a No. 5 movable pressure plate, the right side of the No. 2 slider is fixedly connected with a No. 1 spring, the No. 1 spring is fixedly installed inside the No. 2 limiting slide groove, the left center of the No. 5 movable pressure plate is fixedly connected with a No. 1 connecting rod, the left side of the No. 1 connecting rod is fixedly connected with a No. 1 driven wedge, the middle part of the No. 1 fixed rod is sleeved and fixed with a No. 2 fixed ear plate, the bottom of the No. 2 fixed ear plate is fixedly connected with a fixed arm, and the right side of the fixed arm is fixedly connected with a No. 1 active wedge that cooperates with the No. 1 driven wedge.

[0019] Preferably, the No. 2 horizontal crimping assembly includes a No. 3 limiting slide groove which is symmetrically opened on the left side of the front side of the flip plate, a No. 3 slider is slidably connected inside the two No. 3 limiting slide grooves, a No. 6 movable pressure plate is commonly fixedly connected to the front sides of the two No. 3 sliders, a No. 2 spring is fixedly connected to the right side of the No. 3 slider, the No. 2 spring is fixedly connected to the inside of the No. 3 limiting slide groove, a No. 2 connecting rod is fixedly connected to the left center of the No. 6 movable pressure plate, a No. 2 connecting rod is fixedly connected to the left side of the No. 2 connecting rod, a No. 2 driven wedge is fixedly connected, a fixing frame is sleeved and fixed to the middle part of the No. 2 fixing rod, and a No. 2 active wedge cooperating with the No. 2 driven wedge is fixedly connected to the bottom of the fixed frame.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention realizes primary positioning and clamping of the pipe fittings by a positioning mechanism, and realizes secondary positioning and clamping of the pipe fittings by crimping and fixing the pipe fittings by a clamping mechanism. At the same time, the locking and fixing between the flip plate and the table top are realized by the cooperation of the plug-in positioning component and the locking mechanism, so that the table top and the flip plate form a whole, thereby improving the stability of the pipe fittings during welding.

[0022] 2. The present invention adjusts the flip plate to a horizontal state through an angle adjustment mechanism to clamp the pipe fittings. The pipe fittings are directly placed in the positioning mechanism and then clamped and fixed using a clamping mechanism. No hand support is required, material placement is simple, and the clamping process is simplified. After clamping, the angle adjustment mechanism adjusts the flip plate to a vertical state to facilitate welding, and the clamping mechanism realizes the integrated clamping of multiple pipe fittings. There is no need to perform multiple positioning and clamping one by one, thereby improving work efficiency.

[0023] 3. The present invention is symmetrically provided with two workbenches, which clamp the pipe fittings in turn. While one workbench is welding, the other workbench is loading and clamping. The two workbenches operate alternately and continuously, which shortens the time consumed in the loading and unloading processes and improves the welding efficiency.

[0024] 4. The present invention limits the bottom ends of multiple pipes by using a limiting bottom plate, thereby ensuring the flatness of the bottoms of the pipes, and cooperates with the use of a positioning mechanism to improve the accuracy of welding positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a stereoscopic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a three-dimensional diagram of workbench No. 2 of the present invention.

[0027] Figure 3 For the present invention Figure 2 A magnified schematic diagram of area A in the middle.

[0028] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of area B in the middle.

[0029] Figure 5 It is a three-dimensional diagram of the table top, angle adjustment mechanism and positioning mechanism of the present invention.

[0030] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of area C in the middle.

[0031] Figure 7 It is a three-dimensional diagram of the table top, clamping mechanism and locking mechanism of the present invention.

[0032] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of area D in the middle.

[0033] Fig. 9 For the present invention Figure 7 Enlarged schematic diagram of area E in the middle.

[0034] Fig.10 An exploded view of the pipe fittings is produced for the wheelchair frame of the present invention.

[0035] In the figure: 1, workbench No. 1; 2, welding manipulator; 3, workbench No. 2; 31, table; 32, angle adjustment mechanism; 321, drive assembly; 3211, servo motor; 3212, guide rail; 3213, screw rod; 3214, slider No. 1; 3215, mounting plate No. 1; 3216, movable block; 322, actuator; 3221, rotating seat No. 1; 3222, fixed head; 3223, rotating arm; 3224, rotating seat No. 2; 3225, fixed block No. 1; 323, cushion block; 324, plug-in positioning assembly; 3241, mounting rod; 3242, mounting plate No. 2; 3243, plug pin; 3244, fixed block No. 2; 3245, locking block No. 1; 3246, locking slot No. 1; 3247, positioning block; 3248, locking block No. 2; 3249, locking slot No. 2; 33, positioning mechanism; 331, obstacle avoidance hole No. 1; 332, flip plate; 333, inverted L-shaped positioning rail No. 1; 334, inverted L-shaped positioning rail No. 2; 335, horizontal positioning rail No. 1; 336, obstacle avoidance hole No. 2; 337, vertical positioning rail; 338, horizontal positioning rail No. 2; 339, inverted L-shaped positioning rail No. 3; 34, clamping mechanism; 341, hydraulic cylinder No. 1; 342, fixing plate No. 1; 343, linkage plate No. 1; 344, vertical crimping assembly No. 1; 3441, No. 1 Fixed rod; 3442, No. 1 movable pressure plate; 3443, No. 1 fixed ear block; 3444, No. 2 fixed ear block; 3445, No. 2 movable pressure plate; 345, No. 2 vertical pressing assembly; 3451, No. 3 fixed ear block; 3452, No. 3 movable pressure plate; 3453, No. 2 fixed rod; 3454, No. 4 fixed ear block; 3455, No. 4 movable pressure plate; 346, No. 1 limiting slide; 347, No. 1 through groove; 348, No. 1 horizontal pressing assembly; 3481, No. 2 fixed ear plate; 3482, fixed arm; 3483, No. 1 active wedge block; 3484, No. 1 driven wedge block; 3485, No. 5 movable pressure plate; 3486, No. 1 spring; 3487 , connecting rod No. 1; 3488, slider No. 2; 3489, limiting slide No. 2; 349, horizontal crimping assembly No. 2; 3491, fixed frame; 3492, driven wedge No. 2; 3493, active wedge No. 2; 3494, limiting slide No. 3; 3495, slider No. 3; 3496, spring No. 2; 3497, connecting rod No. 2; 3498, movable pressure plate No. 6; 35, limiting bottom plate; 36, locking mechanism; 361, hydraulic cylinder No. 2; 362, fixed plate No. 2; 363, Z-shaped frame; 364, linkage plate No. 2; 365, I-shaped plug-in block; 37, flip assembly; 371, fixed ear plate No. 1; 372, rotating head; 373, rotating shaft. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 A wheelchair manufacturing and forming automated welding equipment comprises a No. 1 workbench 1, a welding manipulator 2 and a No. 2 workbench 3. The No. 1 workbench 1 and the No. 2 workbench 3 are symmetrically arranged on the left and right sides of the welding manipulator 2. The No. 1 workbench 1 and the No. 2 workbench 3 have the same structure. The No. 2 workbench 3 comprises a table 31. The top of the table 31 is provided with an angle adjustment mechanism 32. The top front side of the table 31 is provided with a flip assembly 37. The top of the flip assembly 37 is provided with a positioning mechanism 33 for positioning the wheelchair pipe fittings. The positioning mechanism 33 is provided with a pressure-welding mechanism for crimping the wheelchair pipe fittings. A fixed clamping mechanism 34 and a locking mechanism 36 are provided at the lower front side of the positioning mechanism 33; support legs are fixedly connected to the four corners of the bottom of the No. 2 workbench 3, and a reinforcing crossbeam is fixedly connected between two adjacent support legs. During use of the present invention, the welding manipulator 2 is used to automatically weld pipe fittings, the angle adjustment mechanism 32 is used to adjust the angle of the positioning mechanism 33, the positioning mechanism 33 is used to position the pipe fittings, the clamping mechanism 34 is used to clamp and fix multiple pipe fittings in an integrated manner, and the locking mechanism 36 is used to lock the positioning mechanism 33 and the table top 31 to form a whole.

[0038] See also Figure 6 The flip assembly 37 includes a No. 1 fixed ear plate 371 which is symmetrically fixed on the front side of the top of the table 31. The two No. 1 fixed ear plates 371 are connected to a rotating shaft 373 for rotation together. Two rotating heads 372 are symmetrically sleeved and fixed on the rotating shaft 373. The flip assembly 37 is used to fix and install the positioning mechanism 33.

[0039] See also Figure 1 , Figure 2 , Figure 4 and Figure 7The positioning mechanism 33 includes two flip plates 332 fixedly connected together on the top of the rotating head 372, two No. 1 obstacle avoidance holes 331 are symmetrically opened on the right side of the front side of the flip plate 332, and a No. 2 obstacle avoidance hole 336 is opened on the lower left side of the front side of the flip plate 332; a No. 3 inverted L-shaped positioning slide rail 339 is fixedly connected to the right end of the front side of the flip plate 332, a No. 1 inverted L-shaped positioning slide rail 333 is fixedly connected to the middle and upper part of the front side of the flip plate 332, a No. 2 horizontal positioning slide rail 338 is fixedly connected to the middle and lower part of the front side of the flip plate 332, a No. 2 inverted L-shaped positioning slide rail 334 is fixedly connected to the lower left side of the front side of the flip plate 332, and a No. 1 horizontal positioning slide rail 335 is fixedly connected to the lower left side of the front side of the flip plate 332 near the corner, and a vertical positioning slide rail 337 is fixedly connected to the front side of the flip plate 332 below the No. 1 inverted L-shaped positioning slide rail 333.

[0040] During the use of the positioning mechanism 33, in the initial state, the flip plate 332 is in a horizontal state, that is, the flip plate 332 is parallel to the table 31. At this time, the wheelchair manufacturing pipe fittings to be processed are placed in the No. 3 inverted L-shaped positioning slide rail 339, the No. 2 horizontal positioning slide rail 338, the No. 1 inverted L-shaped positioning slide rail 333, the vertical positioning slide rail 337, the No. 1 horizontal positioning slide rail 335 and the No. 2 inverted L-shaped positioning slide rail 334 in sequence, among which the No. 1 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 a close fit between the pipe fittings, the order in which the pipe fittings are placed cannot be reversed, so that the positioning mechanism 33 is used to perform preliminary positioning and clamping of each pipe fitting, and the opening positions of the No. 1 obstacle avoidance hole 331 and the No. 2 obstacle avoidance hole 336 are the welding positions of the pipe fittings, which is convenient for the welding robot 2 to weld the pipe fittings from the front and back sides respectively.

[0041] See also Figure 2 , Figure 3 , Figure 4 and Figure 7The clamping mechanism 34 includes 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 vertical crimping assembly 345 is arranged in the middle. The horizontal crimping assembly 349 is provided with two vertical No. 1 through slots 347 symmetrically on the left and right sides of the front side of the flip plate 332, and each No. 1 through slot 347 is provided with a vertically arranged No. 1 limiting slide slot 346 on both sides. The No. 1 vertical crimping assembly 344 includes a No. 1 fixed rod 3441 fixedly connected to the right side of the bottom of the No. 1 linkage plate 343, and a No. 2 fixed ear block 3444 is sleeved and fixed on the top of the No. 1 fixed rod 3441. The front side of the No. 2 fixed ear block 3444 is fixedly connected with a crimping and fixing device for the wheelchair manufacturing pipe fittings. The second movable pressing plate 3445 is fixed, the first fixed rod 3441 is sleeved and fixed with the first fixed ear block 3443 below, the front side of the first fixed ear block 3443 is fixedly connected to the first movable pressing plate 3442, the first movable pressing plate 3442 and the second movable pressing plate 3445 are both symmetrically fixedly connected with the limit blocks slidably connected to the inside of the first limit slide groove 346, the second vertical pressing assembly 345 includes a second fixed rod 3453 fixedly connected to the left side of the first linkage plate 343, and the bottom of the second fixed rod 3453 is fixedly connected to the left side of the first linkage plate 343. The third fixed ear block 3451 and the fourth fixed ear block 3454 are symmetrically fixed, the front side of the third fixed ear block 3451 is fixedly connected with the third movable pressure plate 3452, the front side of the fourth fixed ear block 3454 is fixedly connected with the fourth movable pressure plate 3455, the rear sides of the third movable pressure plate 3452 and the fourth movable pressure plate 3455 are both symmetrically fixedly connected with limit blocks slidably connected to the inside of the No. 1 limit slide groove 346, and the No. 1 fixed rod 3441 and the No. 2 fixed rod 3453 are both located inside the corresponding No. 1 through groove 347.

[0042] See also Figure 2 and Figure 3The No. 1 horizontal crimping assembly 348 includes a No. 2 limiting slot 3489 symmetrically opened on the right side of the front side of the flip plate 332, and the two No. 2 limiting slots 3489 are both slidably connected with No. 2 sliders 3488, and the front sides of the two No. 2 sliders 3488 are commonly fixedly connected with a No. 5 movable pressure plate 3485, and the right side of the No. 2 slider 3488 is fixedly connected with a No. 1 spring 3486, and the No. 1 spring 3486 is fixedly installed in the No. 2 limiting slot 3489, and the left center of the No. 5 movable pressure plate 3485 is fixedly connected with a No. 1 connecting rod 3487, and the left side of the No. 1 connecting rod 3487 is fixedly connected with a No. 1 driven wedge block 3484, and the middle part of the No. 1 fixed rod 3441 is sleeved and fixed with a No. 2 fixed ear plate 3481, and the bottom of the No. 2 fixed ear plate 3481 is fixedly connected with a fixed arm 3482, and the right side of the fixed arm 3482 is fixedly connected with a No. 1 active wedge block 3483 that cooperates with the No. 1 driven wedge block 3484.

[0043] See also Figure 2 , Figure 4 and Figure 7 The No. 2 horizontal crimping assembly 349 includes a No. 3 limiting slot 3494 symmetrically opened on the left side of the front side of the flip plate 332, and the two No. 3 limiting slots 3494 are both slidably connected with the No. 3 sliders 3495, and the front sides of the two No. 3 sliders 3495 are commonly fixedly connected with the No. 6 movable pressure plate 3498, and the No. 2 spring 3496 is fixedly connected to the right side of the No. 3 slider 3495, and the No. 2 spring 3496 is fixedly connected to the inside of the No. 3 limiting slot 3494. The No. 6 movable pressure plate 3498 is fixedly connected to the center of the left side of the No. 2 connecting rod 3497, and the No. 2 driven wedge block 3492 is fixedly connected to the left side of the No. 2 connecting rod 3497, and the No. 2 fixed rod 3453 is fixedly connected to the middle part with a fixed frame 3491, and the bottom of the fixed frame 3491 is fixedly connected with the No. 2 active wedge block 3493 cooperating with the No. 2 driven wedge block 3492.

[0044] During the use of the clamping mechanism 34, when multiple pipe fittings are placed in the positioning mechanism 33, the positioning mechanism 33 and the clamping mechanism 34 are both in a horizontal state, and the No. 1 hydraulic cylinder 341 is started. The output end of the No. 1 hydraulic cylinder 341 drives the No. 1 linkage plate 343 to move forward, and simultaneously drives the No. 1 fixing rod 3441 to move forward. When the No. 1 fixing rod 3441 moves forward, it drives the No. 2 movable pressing plate 3445 on it to press and fix the pipe fittings on the No. 1 inverted L-shaped positioning slide rail 333, and the No. 1 movable pressing plate 3442 simultaneously presses and fixes the pipe fittings on the No. 2 horizontal positioning slide rail 338, and simultaneously At this time, the No. 2 fixed ear plate 3481 and the fixed arm 3482 thereon move forward, and then synchronously drive the No. 1 active wedge block 3483 to squeeze the No. 1 driven wedge block 3484, driving the No. 1 driven wedge block 3484 and the No. 1 connecting rod 3487 thereon to move to the right. At this time, the No. 5 movable pressure plate 3485 and the No. 2 sliding block 3488 thereon move to the right, and then compress the No. 1 spring 3486. Finally, the No. 5 movable pressure plate 3485 presses and fixes the pipe fitting on the No. 3 inverted L-shaped positioning slide rail 339. The forward movement of the No. 2 fixed rod 3453 synchronously drives the No. 3 movable pressure plate 3452 to press the No. 2 inverted L-shaped positioning slide rail The pipe fittings on the horizontal positioning rail 334 are crimped and fixed, the fourth movable pressure plate 3455 crimps and fixes the pipe fittings on the first horizontal positioning rail 335, and the second fixing rod 3453 synchronously drives the fixing 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 rightward, and synchronously drives the sixth movable pressure plate 3498 and the third sliding block 3495 thereon to move rightward, and then squeezes the second spring 3496, and uses the sixth movable pressure plate 3498 to press the first inverted L The side walls of the pipe fittings on the shaped positioning slide rail 333 are crimped and fixed, thereby realizing integrated positioning and clamping of multiple pipe fittings. There is no need for multiple positioning and clamping, and the work efficiency is high. In addition, the No. 1 movable pressure plate 3442, the No. 2 movable pressure plate 3445, the No. 3 movable pressure plate 3452, the No. 4 movable pressure plate 3455, the No. 5 movable pressure plate 3485 and the No. 6 movable pressure plate 3498 are all provided with arc grooves that cooperate with the pipe fittings. The length of the No. 3 slider 3495 is longer than the width of the No. 1 limiting slide groove 346, thereby avoiding the problem of the No. 3 slider 3495 escaping from the No. 1 limiting slide groove 346 when sliding.

[0045] See also 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 a guide rail 3212 fixedly connected to the top of the table 31 symmetrically, and the two guide rails 3212 are slidably connected to a No. 1 slider 3214, and the tops of the two No. 1 sliders 3214 are commonly fixedly connected to a No. 1 mounting plate 3215, a servo motor 3211 is fixedly connected to the rear side of the top of the table 31, and a screw rod 3213 is fixedly connected to the output end of the servo motor 3211, and the outer wall of the screw rod 3213 is threadedly connected to a movable block 3216 through a ball nut, and the top of the movable block 3216 is fixedly connected to the bottom of the No. 1 mounting plate 3215, and the screw rod 3213 is fixedly connected to the rear side of the top of the table 31. The front end is rotatably connected with a bearing block, and the bearing block is fixedly installed on the front side of the top of the table 31. The actuator 322 includes 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 a No. 1 rotating seat 3221. The top of the No. 1 rotating seat 3221 is fixedly connected with a rotating arm 3223. The top of the rotating arm 3223 is fixedly installed with a No. 2 rotating seat 3224. The middle part of the No. 2 rotating seat 3224 is rotatably connected to a No. 1 fixed block 3225 through a connecting shaft. The No. 1 fixed block 3225 is fixedly connected to the lower rear side of the flip plate 332. The bottom front side of the flip plate 332 is fixedly connected to a limiting bottom plate 35 for keeping the bottom of the pipe flush. Two pads 323 are symmetrically fixedly connected to the left and right sides of the top rear side of the table 31.

[0046] See also Figure 5 , Figure 6 and Fig. 9 The plug-in positioning assembly 324 includes a mounting rod 3241 symmetrically fixedly connected to the side of the No. 1 slider 3214 away from the movable block 3216, the front ends of the two mounting rods 3241 are fixedly penetrated with a No. 2 mounting plate 3242, the front ends of the two No. 2 mounting plates 3242 are symmetrically fixedly connected with two plug pins 3243, the front end faces of the front ends of the mounting rods 3241 are fixedly connected with a No. 1 locking block 3245, and a No. 1 locking slot 3246 is provided on the front side of the No. 1 locking block 3245, and two No. 2 fixing blocks 3244 are symmetrically fixedly connected to the front side of the top of the table 31, and a No. 2 locking block 3248 is fixedly connected to the top of the rear side of the No. 2 fixing block 3244, and the left and right sides of the No. 2 locking block 3248 are fixedly connected with positioning blocks 3247, the positioning block 3247 is slidably plugged with the plug pin 3243, and a No. 2 locking slot 3249 is provided on the rear side of the top of the No. 2 locking block 3248.

[0047] See also Figure 7 , Figure 8 and Fig. 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, when the flip plate 332 is in a horizontal state, the pipe fittings to be welded are placed in turn on the No. 3 inverted L-shaped positioning rail 339, the No. 2 horizontal positioning rail 338, the No. 1 inverted L-shaped positioning rail 333, the vertical positioning rail 337, the No. 1 horizontal positioning rail 335 and the No. 2 inverted L-shaped positioning rail 334. The pipe fittings are placed horizontally, which is simple to operate and realizes the primary positioning and clamping of the pipe fittings. Subsequently, the clamping mechanism 34 is used to clamp and fix multiple pipe fittings in an integrated manner, without the need for individual clamping, and the work efficiency is high. The clamping mechanism 34 is used to realize the secondary positioning and clamping of the pipe fittings , which improves the stability of pipe clamping. After clamping, the angle adjustment mechanism 32 flips the pipe on the flip plate 332 by ninety degrees to a vertical state, which is convenient for welding the pipe. After the flip plate 332 flips by ninety degrees, the locking mechanism 36 connects the flip plate 332 and the table 31 to form a whole, which further improves the stability of the flip plate 332 and the pipe clamped thereon. The structure of workbench No. 1 and workbench No. 2 3 is exactly the same. Workbench No. 1 1 and workbench No. 2 3 work alternately. When workbench No. 1 is welding, workbench No. 2 3 loads and unloads materials, realizing continuous operation and improving welding efficiency.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

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) have completely the same 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 turning 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 turning assembly (37); a clamping mechanism (34) is arranged on the positioning mechanism (33); and a locking mechanism (36) is arranged on the lower front side of the positioning mechanism (33); The angle adjustment mechanism (32) comprises a driving component (321), an actuating component (322) and a plug-in positioning component (324), wherein 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 at the top of the rotating head (372), two first obstacle avoidance holes (331) are symmetrically arranged on the right front side of the flip plate (332), and a second obstacle avoidance hole (336) is arranged 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 1, 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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