A truss end face automatic welding equipment

Abstract

The present invention provides a truss end face automatic welding equipment, including a feeding manipulator, a welding manipulator and a feeding conveyor, a truss end face welding positioning machine and a truss horizontal shifting machine, wherein the truss horizontal shifting machine includes a first conveying device, the truss end face welding positioning machine is located between the feeding manipulator and the welding manipulator, and the truss end face welding positioning machine is also located between the feeding conveyor and the first conveyor, and the feeding conveyor and the first conveyor are respectively provided with a correction device at positions close to the truss end face welding positioning machine. By providing a truss welding positioning machine, the positions of the straight ribs at the ends of the truss can be positioned, which is convenient for the welding manipulator to perform welding. At the same time, by providing a feeding manipulator, automatic feeding of the welding connecting rod can be achieved, and the entire welding process does not require manual participation, and the productivity is relatively high and the labor cost is relatively low.

Description

Technical Field

[0001] The invention relates to truss production equipment, in particular to truss end face automatic welding equipment. Background Art

[0002] Steel structure houses are widely used due to their fast on-site construction speed and less construction waste. The floor slabs of steel structure houses usually need to be supported by trusses, which are usually prefabricated in factories.

[0003] In traditional truss production, after being conveyed out of the truss forming machine, the truss usually includes three parallel straight bars arranged in a herringbone shape and two curved bars that are arranged according to a predetermined pattern and welded to the straight bars at the same time. At the end position of the truss, the ends of the three straight bars are suspended from at least two straight bars, so connecting rods are required to weld the ends of the three straight bars together. Since the end position of the suspended straight bars is difficult to determine and is prone to shaking, the welding process of the truss ends is currently usually completed manually, with relatively low productivity and relatively high labor costs.

[0004] In view of this, the applicant conducted an in-depth study on the above-mentioned issues, which led to the present case. Summary of the invention

[0005] The object of the present invention is to provide a truss end face automatic welding device with relatively high productivity and relatively low labor cost.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A truss end face automatic welding equipment comprises a loading robot, a welding robot, and a feeding conveying device, a truss end face welding positioning machine and a truss horizontal shifting machine connected in sequence, wherein the truss horizontal shifting machine comprises a first conveying device located on the same straight line as the feeding conveying device, the truss end face welding positioning machine is located between the loading robot and the welding robot, and the truss end face welding positioning machine is also located between the feeding conveying device and the first conveying device, and correction devices are respectively provided at the positions of the feeding conveying device and the first conveying device close to the truss end face welding positioning machine.

[0008] As an improvement of the present invention, the truss end face welding positioning machine includes a positioning frame, and a lower straight rib positioning mechanism and an upper straight rib pressing mechanism are arranged in a straight line in sequence on the positioning frame, and the arrangement direction of the lower straight rib positioning mechanism and the upper straight rib pressing mechanism is the same as the conveying direction of the feed conveying device. The lower straight rib positioning mechanism includes a lower pressure plate vertically slidably connected to the positioning frame, two support plates arranged parallel to each other and respectively fixedly connected to the lower pressure plate, a lower pressure cylinder for driving the lower pressure plate to slide, a top pressure plate vertically slidably connected to the positioning frame and located below each of the support plates, a support seat fixedly connected to the top pressure plate, and a top pressure cylinder for driving the top pressure plate to slide, the two support plates are vertically arranged and their arrangement direction is perpendicular to the arrangement direction of the lower straight rib positioning mechanism and the upper straight rib pressing mechanism, and the support seat has support surfaces that respectively cooperate with the two support plates one-to-one and a support plate that cooperates with the upper straight rib pressing mechanism, and the support plate is located between the two support surfaces.

[0009] As an improvement of the present invention, there are two upper straight rib pressing mechanisms, and the two upper straight rib pressing mechanisms are respectively located on both sides of the lower straight rib positioning mechanism.

[0010] As an improvement of the present invention, the upper straight rib pressing mechanism includes a pressing seat vertically slidably connected to the positioning frame and a pressing cylinder for driving the pressing seat to slide.

[0011] As an improvement of the present invention, the truss horizontal shifting machine also includes a second conveying device arranged parallel to the first conveying device, a plurality of chain conveyors arranged perpendicular to the first conveying device and located between the first conveying device and the second conveying device, a first ferry device for transporting the truss from the first conveying device to each of the chain conveyors, and a second ferry device for transporting the truss from each of the chain conveyors to the second conveying device.

[0012] As an improvement of the present invention, a plurality of positioning strips are arranged at equal intervals on the conveying chain of at least one of the chain conveyors along its conveying direction, and each of the positioning strips is arranged perpendicular to the conveying direction of the corresponding chain conveyor.

[0013] As an improvement of the present invention, the first conveying device is a chain conveying device, and the second conveying device is a roller conveying device.

[0014] As an improvement of the present invention, a plurality of support plates arranged sequentially along the chain body direction of the conveying chain are fixedly connected to the conveying chain of the first conveying device, and the support plates are respectively fixedly connected or integrally connected to limit plates at positions on both sides of the conveying chain.

[0015] As an improvement of the present invention, the first ferry device and the second ferry device both include a ferry frame, a transverse movement seat located above the first conveying device or the second conveying device and horizontally slidably connected to the ferry frame, a transverse movement motor for driving the transverse movement seat to slide, a lifting frame vertically slidably connected to the transverse movement seat, a lifting motor for driving the lifting frame to slide, and a clamp arranged on the lifting frame, the sliding direction of the transverse movement seat is arranged perpendicular to the first conveying device or the second conveying device, the lower end of the lifting frame has a support rod arranged parallel to the first conveying device or the second conveying device, and one side of the support rod is provided with at least two hooks cooperating with the truss.

[0016] As an improvement of the present invention, the first ferry device has one support rod, and the second ferry device has three support rods arranged in sequence.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects:

[0018] 1. By setting up a truss welding positioning machine, the position of each straight reinforcement at the end of the truss can be positioned, which is convenient for the welding manipulator to perform welding. At the same time, by setting up a loading manipulator, automatic feeding of the welding connecting rod can be achieved. The entire welding process does not require manual participation, the productivity is relatively high and the labor cost is relatively low.

[0019] 2. By setting up two upper straight reinforcement clamping mechanisms, it is convenient to weld and position the two ends of the truss without turning it over.

[0020] 3. By setting up a truss horizontal shifting machine, the truss can be automatically transported horizontally, so that the truss with completed end welding can be output horizontally, which effectively reduces the length requirement of the truss end automatic welding equipment, and then reduces the workshop length requirement, thereby reducing production costs.

[0021] 4. By setting the positioning strip, the truss can be prevented from slipping relative to the chain conveyor, making it easier to set the working sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a partial structural schematic diagram of the truss end face automatic welding equipment of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the truss end face welding positioning machine in the present invention in use state;

[0024] Figure 3 It is a structural schematic diagram of another perspective of the truss end face welding positioning machine in the present invention in use;

[0025] Figure 4 It is a structural schematic diagram of the truss horizontal shifting machine in the present invention;

[0026] Figure 5 for Figure 4 A partial enlarged view of the position A in the middle;

[0027] Figure 6 Figure 4 A partial enlarged view of position B in the middle;

[0028] Figure 7 Figure 4 A partial enlarged view of position C in the middle.

[0029] The markings in the figure correspond to the following:

[0030] 110-loading robot; 120-welding robot;

[0031] 130-feeding conveying device; 140-connecting rod feeding device;

[0032] 200-Truss end face welding positioning machine;

[0033] 210-positioning frame; 220-lower straight rib positioning mechanism;

[0034] 221-lower pressure plate; 222-back plate;

[0035] 223-downward pressure cylinder; 224-top pressure plate;

[0036] 225-support seat; 226-top pressure cylinder;

[0037] 227-support surface; 228-support plate;

[0038] 229-guide rod; 230-upper straight rib clamping mechanism;

[0039] 231-pressing seat; 232-pressing cylinder;

[0040] 300-Truss horizontal shift machine;

[0041] 310-first conveying device; 311-support plate;

[0042] 312-limiting plate; 313-correcting cylinder;

[0043] 314-push block; 315-guide block;

[0044] 320-second conveying device; 330-chain conveyor;

[0045] 331-positioning bar; 340-first ferry device;

[0046] 341- ferry frame; 342- transverse seat;

[0047] 343-transverse motor; 344-lifting frame;

[0048] 345-lifting motor; 346-gripping claw;

[0049] 347-reducer; 348-gear;

[0050] 349- rack; 350- second ferry device;

[0051] 351- telescopic cylinder; 352- fixed rod;

[0052] 353-movable block; 354-herringbone piece;

[0053] 355- splint; 356- connecting rod;

[0054] 357-support rod; 358-retractor hook. DETAILED DESCRIPTION

[0055] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0056] like Figure 1 As shown, the present embodiment provides a truss end face automatic welding equipment, including a loading robot 110, a welding robot 120, and a feeding and conveying device 130, a truss end face welding positioning machine 200 and a truss horizontal shifting machine 300 connected in sequence, wherein the loading robot 110 and the welding robot 120 are multi-joint serial robots purchased directly from the market. Of course, after purchase, a welding gun needs to be installed at the end of the robot to form the welding robot 120. The welding gun can be a welding gun commonly used in truss production, and the purchased multi-joint serial robot can usually directly clamp the connecting rod for welding, but a hopper, a vibrating feeding tray or other existing connecting rod feeding device 140 for placing the connecting rod needs to be provided next to the loading robot 110.

[0057] The truss horizontal shifting machine 300 includes a first conveying device 310 located on the same straight line as the feeding conveying device 130, and the structure of the feeding conveying device 130 is the same as that of the first conveying device 310, and its specific structure will be described below. The truss end face welding positioning machine 200 is located between the feeding manipulator 110 and the welding manipulator 120, and the truss end face welding positioning machine 200 is also located between the feeding conveying device 130 and the first conveying device 310. In addition, the feeding conveying device 130 and the first conveying device 310 are respectively provided with a correction device at the position close to the truss end face welding positioning machine 200, so as to correct the position of the truss on the corresponding conveying device for positioning. The correcting device can be a conventional device. In the present embodiment, the correcting device comprises two correcting cylinders 313 arranged opposite to each other. The cylinder body of each correcting cylinder 313 is fixedly connected to the frame of the corresponding conveying device, and a push block 314 is fixedly connected to the piston rod of each correcting cylinder 313. Guide blocks 315 are respectively arranged on both sides of the push block 314. When in use, the guide block 315 is arranged toward one side of the truss from one end connected to the push block 314 to the other end, gradually tilting away from the truss. This helps to avoid the end of the push block 314 from getting stuck on the truss. Of course, the length of the push block 314 needs to be greater than the pitch of the truss curved ribs.

[0058] like Figure 2 and Figure 3 As shown, and refer to Figure 1 As shown, the truss end face welding positioning machine 200 includes a positioning frame 210, on which a lower straight rib positioning mechanism 220 and an upper straight rib pressing mechanism 230 are arranged in a horizontal straight line, wherein there are two upper straight rib pressing mechanisms 230, which are respectively located on both sides of the lower straight rib positioning mechanism 220, so that both ends of the truss can be welded and positioned without turning over. In addition, the arrangement direction of the lower straight rib positioning mechanism 220 and the upper straight rib pressing mechanism 230 is the same as the conveying direction of the feed conveying device 130.

[0059] An operating space for the truss to pass through is formed in the middle of the positioning frame 210 . The length direction of the truss when passing through the operating space is the same as the arrangement direction of the lower straight rib positioning mechanism 220 and the upper straight rib pressing mechanism 230 .

[0060] The lower straight rib positioning mechanism 220 includes a lower pressure plate 221 vertically slidably connected to the positioning frame 210, two support plates 222 arranged parallel to each other and respectively fixedly connected to the lower side of the lower pressure plate, a lower pressure cylinder 223 for driving the lower pressure plate 221 to slide, a top pressure plate 224 vertically slidably connected to the positioning frame 210 and located below each support plate 222, a support seat 225 fixedly connected to the upper side of the top pressure plate 224 and a top pressure cylinder 226 for driving the top pressure plate 224 to slide, wherein the lower pressure plate 221 and the top pressure plate 224 and the position therebetween are all located in the operating space of the positioning frame 210, and when in use, the truss is located between the lower pressure plate 221 and the top pressure plate 224.

[0061] The two support plates 222 are arranged vertically and their arrangement direction is perpendicular to the arrangement direction of the lower straight rib positioning mechanism 220 and the upper straight rib pressing mechanism 230. The support seat 225 has a support surface 227 that matches the two support plates 222 one-to-one and a support plate 228 that matches the upper straight rib pressing mechanism 230. The support plate 228 is arranged vertically and is located between the two support surfaces 227 and also between the two support plates 222. Preferably, the support surface 227 is an inclined surface inclined relative to the horizontal plane, and the lower end of each support plate 222 is respectively provided with an inclined guide surface that matches the corresponding support surface 227, so as to ensure that the straight rib is better clamped. In addition, the lower end of the support plate 222 is provided with a notch to reduce the contact area between it and the straight rib.

[0062] The specific sliding connection structure between the lower pressing plate 221 and the top pressing plate 224 and the positioning frame 210 can be a conventional structure. In this embodiment, the lower pressing plate 221 and the top pressing plate 224 are respectively fixedly connected with a guide rod 229 that is slidably connected to the positioning frame 210, so as to achieve a sliding connection with the positioning frame 210 and a certain guiding effect. In addition, the cylinder bodies of the lower pressing cylinder 223 and the top pressing cylinder 226 are both installed on the positioning frame 210, and the piston rod is rotatably connected to the corresponding lower pressing plate 221 or the top pressing plate 224.

[0063] The upper straight rib clamping mechanism 230 includes a pressure seat 231 vertically slidably connected to the positioning frame 210 and a clamping cylinder 232 for driving the pressure seat 231 to slide. Specifically, sliders are respectively provided on both sides of the pressure seat 231, and the positioning frame 210 is respectively provided with two slide rails that cooperate with the sliders located on both sides of the pressure seat 231. The sliders located on the same side of the pressure seat 231 are slidably connected to the same slide rail. The cylinder body of the clamping cylinder 232 is installed on the positioning frame 210, and its piston rod is rotatably connected to the pressure seat 231.

[0064] Before use, each cylinder is in a retracted state. When one end of the truss penetrates into the operating space under the action of the feeding conveying device 130 (this state can be judged in a conventional manner, such as by setting a proximity switch or sensor on the positioning frame 210), the lower pressure plate 221 and the upper pressure plate 224 slide toward each other, so that the two lower straight ribs of the truss are clamped between the corresponding support plate 223 and the support surface 227. At the same time, the pressure seat 231 relatively close to the end of the truss that has not penetrated into the operating space slides downward, so that the upper straight ribs are pressed between the support plate 228 and the pressure seat 231, thereby fixing the positions of the three straight ribs; then the feeding robot 110 clamps a connecting rod to the truss. The end position is such that the two ends of the connecting rod are respectively pressed against the positions of the two straight ribs near the ends, and then the connecting rod is welded to the corresponding straight ribs by the welding robot 120, and then the above steps are repeated until a connecting rod is welded between two adjacent straight ribs. Of course, when repeating the above steps, the placement position of the connecting rod is different; after completing the above steps, the truss is moved to the first conveying device 310 under the drive of the feeding conveying device 130, and when the other end of the truss is about to pass through the operating space, this state can be judged in a conventional manner, for example, a proximity switch or sensor is set on the feeding conveying device 130), and the above steps are repeated to weld the ends of the truss.

[0065] like Figure 4 -As shown in Figure 7, the truss horizontal shifting machine 300 also includes a second conveying device 320 arranged in parallel with the first conveying device 310, a plurality of chain conveyors 330 respectively arranged perpendicular to the first conveying device 310 and located between the first conveying device 310 and the second conveying device 320, a first ferry device 340 for transporting the truss from the first conveying device 310 to each chain conveyor 330, and a second ferry device 350 for transporting the truss from each chain conveyor 330 to the second conveying device 320, wherein the structures of the first conveying device 310 and the second conveying device 320 may be the same structure, and the structures of the first ferry device 340 and the second ferry device 350 may also be the same structure. In this embodiment, the structures of the first conveying device 310 and the second conveying device 320 are different, and there are also differences between the first ferry device 340 and the second ferry device 350.

[0066] The first conveying device 310 is a chain conveying device that can be directly purchased from the market. The sprocket of the chain conveying device adopts a double-row sprocket, and the chain of the chain conveying device is at least two. The transmission chain of the chain conveying device is fixedly connected with a plurality of support plates 311 arranged in sequence along the chain body direction of the transmission chain. The support plates 311 are respectively fixedly connected or integrally connected with the limit plates 312 at the positions on both sides of the transmission chain. It should be noted that the chain conveying device purchased on the market does not have a support plate 311, and needs to be welded by itself after purchase. Each support plate 311 is fixedly connected to all the transmission chains of the chain conveying device at the same time, rather than each transmission chain individually welding a support plate 311 to ensure the stability of the support plate 311. It should also be noted that the first conveying device 310 can use only one chain conveying device, or it can be composed of two or more chain conveying devices that are linearly connected in series.

[0067] The second conveying device 320 is a roller conveying device that can be directly purchased from the market. It can be composed of only one roller conveying device, or more than two roller conveying devices that are linearly connected in series.

[0068] The chain conveyor 330 is also a conveyor that can be purchased directly from the market. Preferably, a plurality of positioning bars 331 are evenly spaced along the conveying direction of at least one chain conveyor 330 on the conveying chain plate, and each positioning bar 331 is arranged perpendicular to the conveying direction of the corresponding chain conveyor 330. It should be noted that the conveyor purchased directly from the market does not have the positioning bar 331, which needs to be set after purchase. In addition, in order to ensure the synchronous operation of each chain conveyor 330, in this embodiment, each chain conveyor 330 shares the same conveying motor.

[0069] The first ferry device 340 and the second ferry device 350 both include a ferry frame 341, a transverse shift seat 342 located above the first conveying device 310 or above the second conveying device 320 and horizontally slidably connected to the ferry frame 341, a transverse shift motor 343 for driving the transverse shift seat 342 to slide, a lifting frame 344 vertically slidably connected to the transverse shift seat 342, a lifting motor 345 for driving the lifting frame 344 to slide, and a clamp 346 arranged on the lifting frame 344, wherein the sliding direction of the transverse shift seat 342 is arranged perpendicular to the corresponding first conveying device 310 or second conveying device 320. The specific transmission connection structure between the transverse seat 342 and the transverse motor 343 and the lifting frame 344 and the lifting motor 345 can be a conventional structure. In the present embodiment, the transverse motor 343 realizes transmission connection through a conventional chain assembly or a synchronous belt assembly. The output shaft of the lifting motor 345 is connected with a reducer 347, and the output shaft of the reducer is connected with a gear 348. The lifting frame 344 is fixedly connected with a rack 349 which is vertically arranged and meshed with the gear 348. The gear 348 is driven by the lifting motor 348 to rotate and drive the rack 349 to move up and down, thereby driving the lifting frame 344 to slide up and down. In addition, the clamp 346 can directly adopt a pneumatic clamp (also called a finger cylinder) purchased on the market. In this embodiment, the clamp 346 includes a telescopic cylinder 351 with a piston rod arranged vertically, a fixed rod 352 located above the telescopic cylinder 351 and fixedly connected to the cylinder body of the telescopic cylinder 351, a movable block 353 fixedly connected to the piston rod of the telescopic cylinder 351 and arranged parallel to the fixed rod 352, and two herringbone pieces 354 rotatably connected to both ends of the movable block 353, and the fixed rod 352 is fixedly connected to the piston rod of the telescopic cylinder 351. 52 is arranged in parallel with the chain conveyor 330, and one of the three ends of each herringbone piece 354 is rotatably connected to the movable block 353, and the other two ends are rotatably connected to the clamping plate 355 and the connecting rod 356, wherein the two clamping plates 355 are arranged opposite to each other for clamping the truss, and the ends of the two connecting rods 356 that are not connected to the corresponding herringbone piece 354 are rotatably connected to the two ends of the fixed rod 352, so that the two clamping plates 355 can be driven to move toward or away from each other by the telescopic cylinder 351 to achieve clamping. Preferably, the connecting rod 356 includes a double-headed nut and a screw respectively screwed to the double-headed nut, so that the length of the connecting rod 356 is easy to adjust.

[0070] The lower end of the lifting frame 344 has a support rod 357 arranged parallel to the corresponding first conveying device 310 or the second conveying device 320, and at least two hooks 358 cooperating with the truss are provided on one side of the support rod 357. Preferably, the first ferry device 340 has a support rod 357, and the clamping claw 346 on the support rod 357 is used to clamp the straight reinforcement relatively located above on the truss. The second ferry device 350 has three support rods 357 arranged in sequence, and the clamping claws 346 on the three support rods 357 are respectively used to clamp the three straight reinforcements on the truss.

[0071] When in use, the truss is fed into the first conveying device 310. During the conveying process of the truss on the first conveying device 310, the position of the truss is corrected by the correction device 313. After the truss is completely conveyed to the first conveying device 310, the truss is clamped onto each chain conveyor 330 by the first ferry device 340. When the truss is conveyed to a position close to the second conveying device 320, the truss is clamped onto the second conveying device 320 by the second ferry device 350. Finally, the truss is conveyed out by the second conveying device 320 to realize horizontal displacement of the truss.

[0072] The present invention is described in detail above with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various modifications to the present invention based on the prior art, such as changing the cylinder in the above embodiment to a hydraulic cylinder, etc., which all fall within the protection scope of the present invention.

Claims

1. A truss end face automatic welding equipment, characterized in that: It includes a feeding manipulator, a welding manipulator, and a feeding conveyor device, a truss end face welding positioning machine and a truss horizontal shifting machine connected in sequence, the truss horizontal shifting machine includes a first conveying device located on the same straight line as the feeding conveyor device, the truss end face welding positioning machine is located between the feeding manipulator and the welding manipulator, and the truss end face welding positioning machine is also located between the feeding conveyor device and the first conveying device, and the feeding conveyor device and the first conveying device are respectively provided with a correction device at positions close to the truss end face welding positioning machine; the first conveying device and the feeding conveyor device are both chain conveying devices; The truss end face welding positioning machine comprises a positioning frame, and a lower straight rib positioning mechanism and an upper straight rib pressing mechanism are arranged in a straight line in sequence on the positioning frame, and the arrangement direction of the lower straight rib positioning mechanism and the upper straight rib pressing mechanism is the same as the conveying direction of the feed conveying device, and the lower straight rib positioning mechanism comprises a lower pressure plate vertically slidably connected to the positioning frame, two support plates arranged in parallel and respectively fixedly connected to the lower pressure plate, a lower pressure cylinder for driving the lower pressure plate to slide, a top pressure plate vertically slidably connected to the positioning frame and located below each of the support plates, a support seat fixedly connected to the top pressure plate, and a top pressure cylinder for driving the top pressure plate to slide, the two support plates are vertically arranged and their arrangement direction is perpendicular to the arrangement direction of the lower straight rib positioning mechanism and the upper straight rib pressing mechanism, and the support seat has support surfaces that respectively cooperate with the two support plates one-to-one and a support plate that cooperates with the upper straight rib pressing mechanism, and the support plate is located between the two support surfaces; There are two upper straight rib clamping mechanisms, and the two upper straight rib clamping mechanisms are respectively located on both sides of the lower straight rib positioning mechanism; The upper straight rib pressing mechanism comprises a pressing seat vertically slidably connected to the positioning frame and a pressing cylinder for driving the pressing seat to slide.

2. The truss end surface automatic welding equipment according to claim 1, characterized in that: The truss horizontal shifting machine also includes a second conveying device arranged parallel to the first conveying device, a plurality of chain conveyors arranged perpendicularly to the first conveying device and located between the first conveying device and the second conveying device, a first ferry device for transporting the truss from the first conveying device to each of the chain conveyors, and a second ferry device for transporting the truss from each of the chain conveyors to the second conveying device.

3. The truss end face automatic welding equipment according to claim 2, characterized in that: A plurality of positioning strips are arranged at equal intervals on the conveying chain of at least one of the chain conveyors along its conveying direction, and each of the positioning strips is arranged perpendicular to the conveying direction of the corresponding chain conveyor.

4. The truss end face automatic welding equipment according to claim 2, characterized in that: The second conveying device is a roller conveying device.

5. The truss end face automatic welding equipment according to claim 4, characterized in that: A plurality of support plates arranged in sequence along the chain body direction of the conveying chain are fixedly connected to the conveying chain of the first conveying device, and the support plates are respectively fixedly connected or integrally connected to limit plates at positions on both sides of the conveying chain.

6. The truss end face automatic welding equipment according to claim 2, characterized in that: The first ferry device and the second ferry device both include a ferry frame, a transverse shift seat located above the first conveying device or the second conveying device and horizontally slidably connected to the ferry frame, a transverse shift motor for driving the transverse shift seat to slide, a lifting frame vertically slidably connected to the transverse shift seat, a lifting motor for driving the lifting frame to slide, and a clamp arranged on the lifting frame. The sliding direction of the transverse shift seat is arranged perpendicular to the first conveying device or the second conveying device. The lower end of the lifting frame has a support rod arranged parallel to the first conveying device or the second conveying device, and one side of the support rod is provided with at least two hooks cooperating with the truss.

7. The truss end face automatic welding equipment according to claim 6, characterized in that: The first ferry device has one support rod, and the second ferry device has three support rods arranged in sequence.

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