CN110394540B - Automatic welding system - Google Patents

Automatic welding system Download PDF

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Publication number
CN110394540B
CN110394540B CN201910684158.8A CN201910684158A CN110394540B CN 110394540 B CN110394540 B CN 110394540B CN 201910684158 A CN201910684158 A CN 201910684158A CN 110394540 B CN110394540 B CN 110394540B
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Prior art keywords
welding
axis
feeding
pressing
conveying
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CN201910684158.8A
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CN110394540A (en
Inventor
郑永华
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Hunan Dayong Intelligent Technology Co ltd
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Hunan Dayong Intelligent Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B23K20/1245Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00Materials to be soldered, welded or cut
    • B23K2103/08Non-ferrous metals or alloys
    • B23K2103/10Aluminium or alloys thereof

Abstract

The embodiment of the invention discloses an automatic welding system, which comprises a welding device, a body feeding device and a welding part feeding device; the welding device comprises a base, a welding workbench supported by the base, a welding equipment support frame arranged on one side of the welding workbench and welding equipment arranged on the welding equipment support frame; the body feeding device is used for conveying the body to be welded to a welding position preset on the welding workbench; the welding equipment support frame comprises a sliding rail crossing the body feeding device, the welding equipment comprises a friction stir welding host arranged on the sliding rail, and the forming direction of a welding spot of the friction stir welding host is the same as the extending direction of the sliding rail in the welding process; the welding part feeding device comprises a conveying structure for conveying the welding part, a grabbing arm for grabbing the welding part and a pressing part for providing positive pressure to the welding part in the welding implementation process, wherein the pressing part is used for providing limiting of the welding part perpendicular to the forming direction of a welding point in the welding implementation process.

Description

Automatic welding system
Technical Field
The invention relates to the technical field of welding, in particular to an automatic welding system.
Background
The manual riveting mode is the main mode of current traffic sign processing. The staff lays the sign body on the workstation with the tie earlier, then puts the specified position with the rib as required, join in marriage the brill riveting hole on sign body and rib, put aside the rib after numbering on the rib, turn over the sign body, expand into the counter bore with the riveting hole on the sign again, scribble the rivet and fill in the counter bore after the rubberizing, turn over the sign body after all counter bores are all filled with the rivet, put the rib on the sign body according to corresponding serial number again, accomplish the pressure and rivet at last. The whole processing process is very complicated, the labor intensity is high, and workers need to repeat the operation once when manufacturing a traffic sign, so that on one hand, the manual operation is easy to make mistakes, the labor intensity is high, and the manufacturing efficiency is low; on the other hand, severe vibration and a large amount of noise are generated during riveting, and long-time manual labor can cause physical injury to workers.
Disclosure of Invention
In order to solve the existing technical problems, the embodiment of the invention provides an automatic welding system which can reduce manual operation and has high manufacturing efficiency.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
an automatic welding system comprises a welding device, a body feeding device and a welding part feeding device; the welding device comprises a base, a welding workbench supported by the base, a welding equipment support frame arranged on one side of the welding workbench, and welding equipment arranged on the welding equipment support frame; the welding workbench stretches across the body feeding device, and the body feeding device is used for conveying the body to be welded to a welding position preset on the welding workbench; the welding equipment support frame comprises a sliding rail which stretches across the body feeding device, the welding equipment comprises a friction stir welding host machine which is arranged on the sliding rail and can move along the extension direction of the sliding rail, and the forming direction of a welding spot of the friction stir welding host machine is the same as the extension direction of the sliding rail in the welding process; the welding part feeding device comprises a conveying structure for conveying a welding part, a grabbing arm for grabbing the welding part and a pressing part for providing positive pressure to the welding part in the welding implementation process, wherein the pressing part is used for providing limiting of the welding part perpendicular to the forming direction of the welding point in the welding implementation process.
The gripper arm comprises a gripper and a rotating shaft for controlling the gripper to rotate, the pressing piece is connected between the rotating shaft and the gripper, the pressing piece is approximately U-shaped, and the gripper is located at the tail end of a U-shaped opening of the pressing piece.
The pressing piece comprises an independent pressing structure with an adjustable position, and the independent pressing structure comprises a first direction pressing structure and a second direction pressing structure which are used for providing different direction limiting for the welding piece.
Wherein, weldment work platform includes many crossbeams that are parallel to each other and keep apart each other, welding equipment support frame still including set up in slide rail below and with the crossbeam of weldment work platform parallel and level, first direction compact structure with second direction compact structure install in between the crossbeam.
The first direction compaction structure and the second direction compaction structure respectively comprise a mounting plate, a compaction fixture below the mounting plate, an air cylinder and a motor, the air cylinder and the motor are located above the mounting plate and connected with the compaction fixture, the direction of a clamping groove in the compaction fixture of the first direction compaction structure is perpendicular to the direction of a clamping groove in the compaction fixture of the second direction compaction structure, and a sliding block matched with a cross beam is further arranged on the mounting plate.
The welding device comprises a base, a welding workbench, a plurality of platform supporting seats, a plurality of guide blocks and guide grooves, wherein the base of the welding device comprises the platform supporting seats which are arranged on two sides of a body feeding device respectively, the welding workbench is connected to the top ends of the platform supporting seats, the platform supporting seats are in a plurality and located at the same side of the body feeding device, the bottom ends of the platform supporting seats are detachably connected with the same bottom plate, and the bottom ends of the platform supporting seats and the bottom plate are formed with the matched guide blocks and guide grooves in front.
The welding equipment support frame comprises a gantry support seat arranged in parallel with the platform support seat, the height of the gantry support seat is larger than that of the platform support seat, the slide rail is connected to the top end of the gantry support seat, the bottom end of the gantry support seat and the platform support seat on the same side are detachably connected with the same bottom plate together, and a matched guide block and a matched guide groove are formed between the bottom end of the gantry support seat and the bottom plate.
Wherein, still be equipped with horizontal adjustment structure on the bottom plate.
The body feeding device comprises a conveying belt for bearing the body, the conveying belt comprises a conveying belt front end and a conveying belt rear end, the conveying belt front end comprises a plurality of independent sections, mechanical push rods arranged between the adjacent sections and a driving motor for providing power for the conveying belt, and the mechanical push rods are used for adjusting the position of the body on the conveying belt.
The welding piece feeding device further comprises a grabbing arm support frame for supporting the grabbing arm, the grabbing arm support frame comprises an X-axis track, a Y-axis track and a Z-axis track, the grabbing arm is fixed at the bottom end of the Z-axis track, and the X-axis track, the Y-axis track and the Z-axis track jointly provide displacement of the X-axis direction, the Y-axis direction and the Z-axis direction for the grabbing arm.
The automatic welding system provided by the embodiment can realize automatic welding between the body and the welding part through the welding device, the body feeding device and the welding part feeding device, wherein the welding equipment comprises a friction stir welding host arranged on a slide rail, and the slide rail is arranged to provide displacement of the friction stir welding host in the welding spot forming direction in the welding process, so that a sliding welding joint can be formed, and the welding quality of the welding joint is improved; the welding part feeding device comprises a pressing part which provides positive pressure to the welding part in the welding implementation process, the pressing part is used for providing limit of the welding part perpendicular to the forming direction of the welding spot in the welding implementation process, relative displacement between the welding part and the body in the welding process is avoided, the welding part feeding device can be suitable for welding the welding part and the body in different directions, and welding precision and welding quality are effectively guaranteed.
Drawings
FIG. 1 is a schematic diagram of an automated welding system according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of the leading end of the conveyor belt in an embodiment of the present application;
FIG. 3 is a schematic view of the rear end of the conveyor belt in an embodiment of the present application;
FIG. 4 is a schematic view of a welding apparatus in an embodiment of the present application;
FIG. 5 is a schematic view of a welding station in an embodiment of the present application;
FIG. 6 is a schematic view of a welding apparatus in an embodiment of the present application;
FIG. 7 is a schematic view of a support stand of the welding apparatus in an embodiment of the present application;
FIG. 8 is a schematic view of a base plate in an embodiment of the present application;
fig. 9 is a schematic view of a conveying structure of a weldment feeding apparatus in an embodiment of the present application;
FIG. 10 is a schematic view of a weldment feed apparatus in an embodiment of the present application;
FIG. 11 is a schematic view of another perspective of an automated welding system according to an embodiment of the present application;
FIG. 12 is a schematic view of a further angle of an automated welding system according to an embodiment of the present application;
FIG. 13 is a schematic view of an automated welding system according to another embodiment of the present application
FIG. 14 is a schematic view of an X-axis weld configuration in an embodiment of the present application;
fig. 15 is a schematic view of a Y-axis welding structure in the embodiment of the present application.
Detailed Description
The technical scheme of the invention is further elaborated by combining the drawings in the specification and specific embodiments. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the specific embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the following description, reference is made to the expression "some embodiments" which describe a subset of all possible embodiments, but it should be understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.
Fig. 1 is a schematic structural diagram of an automatic welding system according to an embodiment of the present invention, where the automatic welding system includes a welding device 30, a body feeding device 10, and a weldment feeding device 20. The welding device 30 includes a base 31, a welding table 33 supported by the base 31, and a welding apparatus 35 disposed above the welding table 33. The automatic welding system is used for fixing the welding part on the body in a welding mode. In the working process, the body feeding device 10 is used for conveying the body to be welded to a preset welding position; the welding part feeding device 20 is used for grabbing a welding part to be welded and conveying the welding part to a position aligned with a corresponding welding point on the body; the welding device 30 is arranged above the body feeding device 10 in a spanning manner, the welding workbench 33 is arranged above a preset welding position of the body feeding device 10, and the welding head 351 of the welding device 35 aligns the welding piece and the welding point corresponding to the body to be connected to weld.
In an alternative embodiment, the automatic welding system is a traffic sign welding system for welding traffic signs, and the body is a traffic sign body, preferably an aluminum plate. The welding spare is the rib of welding on the traffic sign body, and the rib can play the intensity of the body of supporting enhancement traffic sign and be convenient for connect the effect of fixing the settlement position on the road with the traffic sign. According to different use scenes and demands, the shape and the size of traffic sign are all inequality, along with the development of intelligent technique, can also appear gradually according to the real-time traffic flow condition intelligent display of road and the all kinds of intelligent traffic signs of control, these intelligent traffic signs probably further include the pilot lamp, the electronic screen and be used for connecting the various circuits of pilot lamp and electronic screen, make the weight of traffic sign increase, ensure the joint strength between rib and the body, will directly influence security and life that the traffic sign used. By the traffic sign welding system provided by the embodiment of the invention, the welding of different traffic signs can be realized without manual operation.
Referring to fig. 2 and 3, the body feeding device 10 includes a conveyor belt 11 for conveying the body, a conveyor belt driving motor 12 located below the conveyor belt 11, and a sensor 13 disposed above the conveyor belt 11. The conveying belt 11 can be divided into a front conveying belt end 112 and a rear conveying belt end 113 along the conveying direction of the body, wherein the driving motor 12 is arranged below the front conveying belt end 112, the sensor is arranged at the position, close to the welding position, of the front conveying belt end 112, the conveying belt of the front conveying belt end 112 is divided into a plurality of independent segments, a mechanical push rod 114 is arranged on at least one side of the conveying belt 11 between two adjacent segments, the mechanical push rod 114 can slide along the interval between two adjacent segments of the conveying belt 11, the sliding direction of the mechanical push rod 114 is perpendicular to the conveying direction, along which the body is conveyed, of the conveying belt, when the body is positioned on the conveying belt 11 and moves along the conveying direction of the conveying belt 11, the mechanical push rod 114 can abut against one side of the body, and the correct position of the body on the. It should be noted that, for bodies with different sizes and shapes, the position of the mechanical push rod 114 can be adjusted accordingly, so as to ensure that the body feeding device 10 can be adapted to more application scenarios.
The sensor 13 is used for detecting the position of the body on the conveyer belt 11, when the sensor 13 detects that the body moves to the corresponding position, the sensor 13 sends a control signal to the conveyer belt driving motor 12, and the driving motor controls the conveying distance of the body according to the control signal. In this embodiment, a sensor may be disposed at one end of the front end 112 of the conveyor belt near the preset welding position, and when the sensor detects that the body moves to the current position, a control signal is sent to the conveyor belt driving motor 12 to control the conveyor belt driving motor 12 to stop. The belt driving motor 12 may control the conveying parameters of the conveying belt, including the conveying direction, the conveying speed, the conveying distance, and the like, and in some alternative embodiments, may not include a sensor, and the operating parameters of the belt driving motor are calculated in advance according to the size of the body and the conveying parameters of the conveying belt, so as to ensure that the body can be conveyed to the preset welding position.
Referring to fig. 4 and 5, the base 31 of the welding device 30 includes platform supports 310 respectively disposed at two sides of the body feeding device 10, and the welding table 33 is connected to top ends of the platform supports 310. The welding workbench 33 spans over the body feeding device 10, the number of the platform supporting seats 310 is multiple, the bottom ends of the platform supporting seats 310 located on the same side of the body feeding device 10 are detachably connected with the same bottom plate 313, a plurality of sheet-shaped reinforcing ribs are arranged at the connection position of each platform supporting seat 310 and the bottom plate 313 at equal intervals along the circumferential direction, the welding device 30 is integrally contacted with the ground through the bottom plate 313, and stable contact between the welding device 30 and the ground can be ensured. The welding table 33 is flat and includes a horizontal work plane. The welding device 30 further comprises a welding equipment support 36 arranged at one end of the welding table 33. The welding equipment support frame 36 includes two gantry support seats 361 respectively located on the platform support seats 310 of the two sides of the body feeding device 10 in parallel with the base 31, and a slide rail 362 connected to the top ends of the gantry support seats 361. The gantry support seat 361 is higher than the platform support seat 310, the main machine of the welding device 35 is disposed on the slide rail 362, the extending direction of the slide rail 362 is perpendicular to the conveying direction of the conveyor belt, and the main machine can slide along the slide rail 362. For convenience of understanding and description, the conveying direction of the conveying belt is defined as the Y-axis direction, and the extending direction of the slide rail 362 is the X-axis direction, that is, the sliding direction of the welding head 351 of the welding device 35 is the X-axis direction.
Referring to fig. 6, the main machine includes a welding head 351 for facing a welding point provided on the welding table 33, a spindle motor 352 for providing a high rotational speed to the welding head 351, and a deceleration motor 353 for providing a positive pressure to the welding head 351. In this embodiment, the main frame further includes a pressing structure disposed near the welding head 351, a cylinder 356 for providing power to the pressing structure, and a pressing rod 354 connected to the cylinder 356. The end of the pressing structure is provided with a pulley 355 at a position close to the welding head 351, the lowest position of the pulley 355 is approximately flush with the welding head 351, and the pulley 355 can move along the sliding direction of the sliding rail 362 according to the main machine. The main machine is further provided with a guide rail perpendicular to the extending direction of the slide rail 362, and taking the transmission direction of the conveyor belt as an axis Y and the extending direction of the slide rail 362 as an axis X, the extending direction of the guide rail is an axis Z. The spindle motor 352 is disposed on the guide rail together with the welding head 351, and the reduction motor 353 drives the spindle motor 352 to move up and down along the extending direction of the guide rail through the bearing screw rod. The deceleration motor 353 can adjust the welding accuracy by controlling the spindle motor 352 and the welding head 351 to move up and down along the guide rail together, and simultaneously provides sufficient positive pressure for the spindle motor 352 in the welding process of the welding head 351.
In an alternative embodiment, referring to fig. 7 and 8, a guiding block is further disposed on a side where the bottom end of the gantry supporting seat 361 is connected to the bottom plate 313, and optionally, a guiding block is also disposed on a side where the bottom end of the platform supporting seat 310 of the welding device 30 is connected to the bottom plate 313, and a guiding groove 314 matched with the guiding block is disposed on the bottom plate 313. The welding device 30 can adjust the installation position by the sliding of the guide block at the bottom end of the platform support seat 310 in the guide groove 314, and similarly, the welding equipment support frame 36 can also adjust the installation position by the sliding of the guide block at the bottom end of the gantry support seat 361 in the guide groove 314, thereby facilitating the realization of the multi-stage adjustment of the welding position of the body on the welding workbench 33 and the welding equipment 35. The bottom plate 313 is further provided with a horizontal adjusting structure 316, and the horizontal adjusting structure 316 can finely adjust the base 31 and the welding equipment support 36 mounted on the bottom plate 313 in the horizontal direction, so as to adjust the horizontal of the sliding rails 362 on the welding workbench 33 and the welding equipment support 36.
Referring to fig. 9 and 10, the weld feeder 20 includes a conveying structure 24 for carrying and conveying the welds, a grabber arm for grabbing the welds, and a grabber arm support 27 for providing support for the grabber arm. The conveying structure 24 includes a conveyor belt 241, a motor 243 for driving the conveyor belt 241 to move, and a limiting structure 242 disposed on the surface of the conveyor belt 241. A plurality of accommodating spaces which are separated from each other and used for accommodating different welding pieces respectively are formed on the surface of the conveyor belt 241 through the limiting structures 242, and a plurality of accommodating spaces with different shapes and sizes can be formed on the conveying structures 24 through the limiting structures 242 so as to accommodate the corresponding welding pieces with different shapes and sizes respectively, thereby facilitating the conveying of the welding pieces under different implementation scenes and the welding between the different welding pieces and the body. The grabbing arm support frame 27 comprises grabbing arm support seats, an X-axis guide rail 21, a Y-axis guide rail 22 and a Z-axis guide rail 23 which are arranged at the top ends of the grabbing arm support seats. The gripper arms are fixed to the bottom ends of the Z-axis guide rails 23. The X-axis guide rail 21 crosses the body feeding device 10 and is connected between the top ends of the support seats of the gripper arms, the extending direction of the Y-axis guide rail 22 is perpendicular to the extending direction of the X-axis guide rail 21, a guide block is arranged at one end of the Y-axis guide rail 22 connected with the X-axis guide rail 21, a guide groove 314 in which the guide block is accommodated and can slide is arranged on the X-axis guide rail 21, and the Y-axis guide rail 22 slides in the guide groove 314 of the X-axis guide rail 21 through the guide block to realize the position adjustment of the gripper arms in the X-axis direction. One end of the Z-axis guide rail 23 connected with the Y-axis is provided with a sliding block protruding out of the surface, the Y-axis guide rail 22 is provided with a sliding groove for accommodating the sliding block and sliding in the sliding groove, and the position of the grabbing arm in the Y-axis direction is adjusted by sliding the sliding block in the sliding groove of the Y-axis guide rail 22 through the Z-axis guide rail 23. And a guide structure which is matched with each other is further arranged between one side of the sliding block and the Z-axis guide rail 23, the connection between the Z-axis guide rail 23 and the Y-axis guide rail 22 at positions with different heights of the Z-axis guide rail 23 can be adjusted through the guide structure, and the position adjustment of the grabbing arm in the Z-axis direction is realized by adjusting the connection between different positions on the Z-axis guide rail 23 and the Y-axis guide rail 22.
The grabbing arm comprises a rotating shaft 24 arranged at the tail end of the Z-axis guide rail 23, a pressing piece 26 connected with the rotating shaft 24 and used for providing pressing force for the welding piece in the welding implementation process, and a grabbing hand 25 connected with the pressing piece 26. The pressing piece 26 is substantially in a shape of a U-shaped plate, two handles 25 are arranged at the tail end of the U-shaped opening of the pressing piece 26, and the pressing piece 26 is used for providing a limit position of the welding piece perpendicular to the forming direction of the welding point in the welding implementation process. The rotating shaft 24 is disposed around the Z-axis guide rail 23 and can rotate around the Z-axis guide rail 23, so as to drive the pressing member 26 and the gripper 25 to rotate around the Z-axis guide rail 23. The gripping device 25 is provided with a gripping structure matched with the shape of a part to be gripped on a welding part, in the working process, the welding part feeding device 20 conveys the welding part to a preset position through a conveying structure, the gripping device 25 correspondingly adjusts the left-and-right moving distance along the X-axis direction, the front-and-back moving distance along the Y-axis direction and the front-and-back moving distance along the Z-axis direction to the preset position on the conveying structure through the X-axis guide rail 21, the Y-axis guide rail 22 and the Z-axis guide rail 23 respectively, the gripping device 25 grips the corresponding welding part and correspondingly adjusts the left-and-right moving distance along the X-axis direction, the front-and-back moving distance along the Y-axis direction and the front-and-back moving distance along the Z-axis direction to move to the position aligned with the corresponding welding point on the body through the X-axis guide rail 21, the Y-axis guide rail 22 and the Z-axis guide rail 23, and at The position of the welding point is aligned, and the pressing force of the pressing piece 26 on the welding piece can be adjusted through the air cylinder on the hand grip 25, so that the continuous pressing force on the welding piece during the welding process is ensured, and the welding effect is improved.
Referring to fig. 11 and 12, in the automatic welding system according to the embodiment of the present invention, the welding device 30, the body feeding device 10, and the welding part feeding device 20 can jointly achieve automatic welding between the body and the welding part, wherein the main machine of the welding device 35 includes a pressing structure disposed close to the welding head 351, the pressing structure includes a pulley 355 whose moving direction is along the forming direction of the welding point, and the pulley 355 moves together with the forming direction of the welding point along with the welding head 351 during welding, so as to improve the quality of the welding point and ensure the welding effect; the welding part feeding device 20 comprises a pressing part 26 for providing positive pressure to the welding part in the welding implementation process, wherein the pressing part 26 is used for providing limit for the welding part in the welding implementation process, the limit is perpendicular to the forming direction of the welding point, relative displacement is avoided between the welding part and the body in the welding process, the welding part feeding device can be suitable for welding the welding part and the body in different directions, and welding precision and welding quality are effectively guaranteed.
Use the body to be the rib on the aluminum plate of traffic sign for the body aluminum plate of traffic sign, welding as the example, the working process of the automatic weld system that this embodiment provided can include following step: first, the aluminum plate is placed at the front end 112 of the conveyor belt, and after the position is adjusted by the mechanical pusher 114, the conveyor belt drives the aluminum plate to move toward the welding table 33 along the Y-axis direction. Secondly, after the aluminum plate triggers the sensor in the process of moving to the welding workbench 33, the driving motor controls the conveyer belt to transmit a specified distance again and then stops. At which point the aluminum sheet just reaches the designated position on the welding table 33. Thirdly, the welding device 35 moves along the slide rail 362 of the welding device support frame 36 to the position opposite to the welding position on the aluminum plate along the X-axis direction. Fourth, welding piece material feeding unit 20 snatchs the arm through the X axle guide rail 21 drive of snatching arm supporting seat top and moves to the position of conveying structure, rotation axis 24 is rotatory 90 degrees, will snatch the arm and adjust to Y axle direction from current position along X axle guide rail 21 traffic direction, Z axle guide rail 23 moves down to snatching the position, it snatchs Z axle guide rail 23 up-moving behind the rib to snatch the arm, again through X axle guide rail 21, Y axle guide rail 22 and rotation axis 24 cooperation, carry the welding position that has placed aluminum plate on the weldment work platform 33 with the rib, the cylinder on the tongs 25 starts and will grab hand 25 and rib and compress tightly down to weldment work platform 33 together this moment. Fifthly, the welding head 351 of the main machine of the welding equipment 35 is over against the welding points on the aluminum plate and the ribs for welding, meanwhile, the pressing structure on the welding equipment 35 provides downward pressing force, and the welding point part has a little displacement in the X-axis direction during welding. Sixth, after welding a point, the welding head 351 is controlled to leave the current welding point and return to the initial position. The grabbing arm and the welding equipment 35 synchronously move to the next welding point along the X-axis direction, and the fifth step is repeated until the whole rib and the aluminum plate are welded. Seventh, the grabber arms are retracted to the origin. Eighth, the welding apparatus 35 is retracted to the origin. Ninth, conveyer belt rear end 114 starts the aluminium plate that will weld the completion and moves appointed distance forward, and rib welding is accomplished until the rib welding on the monoblock aluminium plate in following rib welded position, repeats aforementioned step, so need not the automatic weld that manual operation can realize the traffic sign, reduces human cost, manufacturing efficiency is high, and ensures the welding effect.
It should be noted that, the working process of the automatic welding system refers to a process of welding the X-axis rib to the aluminum plate, and the automatic welding system can also conveniently weld the Y-axis rib to the aluminum plate, and at this time, the working process of the automatic welding system may include the following steps: first, the aluminum plate is placed at the front end 112 of the conveyor belt, and after the position is adjusted by the mechanical pusher 114, the conveyor belt drives the aluminum plate to move toward the welding table 33 along the Y-axis direction. Secondly, after the aluminum plate triggers the sensor in the process of moving to the welding workbench 33, the driving motor controls the conveyer belt to transmit a specified distance again and then stops. At which point the aluminum sheet just reaches the designated position on the welding table 33. Thirdly, the rib conveyer belt conveys Y-axis ribs to a set position, the grabbing arm is adjusted to be in a Y direction after rotating for 90 degrees, the Z-axis guide rail moves downwards to the grabbing position, the grabbing head grabs the ribs and then moves upwards, the grabbing arm is matched with the rotating shaft 24 through the X-axis guide rail 21, the Y-axis guide rail 22, and the ribs are conveyed to the welding position of the aluminum plate on the welding workbench 33. Fourth, the welding device 35 is moved along the rail 362 to the welding position. Fifthly, the welding head 351 of the main machine of the welding device 35 is over against the welding points on the aluminum plate and the ribs for welding, meanwhile, the pressing structure on the welding device 35 provides downward pressing force, and the welding point part has a little displacement in the Y-axis direction during welding. Sixth, after welding a point, the welding head 351 is controlled to leave the current welding point and return to the initial position. The grabbing arm and the welding equipment 35 synchronously move to the next welding point along the Y-axis direction, and the fifth step is repeated until the whole rib and the aluminum plate are welded. Seventh, the grabber arms are retracted to the origin. Eighth, the welding apparatus 35 is retracted to the origin. Ninth, conveyer belt rear end 114 starts the aluminium plate that will weld the completion and moves appointed distance forward, and rib welding on the next Y axle rib welded position, the aforesaid step of repetition is accomplished until the monoblock aluminium plate, so need not the automatic weld that artificial operation can realize the traffic sign, reduces human cost, manufacturing efficiency is high, and ensures the welding effect.
Among the above-mentioned automatic weld system, welding equipment 35 adopts friction stir welding host computer equipment, welds the body aluminum plate of realization to the traffic sign through friction stir welding, can promote welding quality. Wherein, through designing welding equipment support frame 36, the friction stir welding host computer is installed on the slide rail 362 of welding equipment support frame 36 and can slide along the direction of slide rail 362, can adjust the friction stir welding host computer on the one hand and make it just can be to the welding point position, and on the other hand can provide the welding point position removal redundancy of friction stir welding host computer in implementing the welding process, forms gliding welding joint point, promotes the welding quality of welding joint point. In addition, a pressing structure is arranged at a position close to the welding head 351, and a pulley 355 arranged at the tail end of the pressing structure can provide downward pressing force in the welding implementation process and can slide along with the movement of the welding head 351, so that a better auxiliary pressing effect can be obtained. Welding piece material feeding unit 20 sets up limit structure 212 through on the conveyer belt 211 can the different welding pieces of holding, snatch arm support frame 27 through the setting and provide at the X axle direction for snatching the arm, the motion ability of Y axle direction and Z axle direction, and should snatch the arm and be provided with rotation axis 24 and compress tightly piece 26, snatch arm support frame 27 and rotation axis 24, it can cooperate jointly to compress tightly piece 26, can realize different shapes, the back removal to the welding position is snatched to the welding piece of size, and just to the accurate location of welding point position, moreover, the steam generator is simple in structure, the snatching of welding piece is more nimble, and applicable in more application scenes.
It is to be understood that the structure of the automatic welding system is not limited to the manner provided in the above-described embodiment, and alternatively, the pressing member 26 of the weldment feeder 20 may not be limited to being disposed between the hand grip 25 and the rotating shaft 24, and other independent pressing structures may be employed. Referring to fig. 13, unlike the previous embodiment, the grabbing arm does not include the pressing member 26 connected to the rotating shaft 24, the welding table 33 of the welding device 30 is composed of a plurality of beams parallel to each other and spaced from each other, and the welding equipment support frame 36 is provided with a beam located on the same horizontal plane as the beam of the welding table 33. This welding piece material feeding unit 20 still includes the independent compact structure who sets up on the crossbeam of welding equipment support frame 36 and welded platform's crossbeam, this independent compact structure is including being used for providing spacing first direction compact structure and the second direction compact structure of different directions to the welding piece, this embodiment is X axle compact structure 261 and Y axle compact structure 263 respectively, wherein, X axle compact structure 261 roughly aligns with the position of the soldered connection 351 of welding equipment 35, X axle compact structure 261 connects between the crossbeam of welding equipment support frame 36 and the crossbeam of weldment work platform 33, Y axle compact structure 263 connects between the crossbeam on weldment work platform 33.
The first direction pressing structure and the second direction pressing structure respectively include a mounting plate 264, a pressing clamp 265 connected below the mounting plate 264, an air cylinder 266 connected with the pressing clamp 265 and located above the mounting plate 264, and a motor 267. The direction of the clamping groove in the pressing clamp 265 of the first-direction pressing structure is parallel to the extending direction of the ribs to be welded. Referring to fig. 14, in particular, the X-axis pressing structure 261 includes a mounting plate 264, an X-axis pressing fixture 265 connected to a lower portion of the mounting plate 264, and a cylinder 266 and a motor 267 connected to the X-axis pressing fixture 265 and located above the mounting plate 264. And a first sliding block 268 which is used for connecting one end of the X-axis compression structure 261 with a beam on the welding workbench 33 and a second sliding block 268 which is used for connecting the other end of the X-axis compression structure with the beam on the welding equipment supporting frame 36 are arranged on the mounting plate 264. The X-axis compression clamp 265 is provided with a toothed clamping groove for fixing the edge of the rib, the cylinder 267 is used for providing downward positive pressure for the X-axis compression clamp 265, and the motor 267 is used for providing power for the movement of the X-axis compression structure 261 along the direction of the beam. This X axle compact structure 261 can include two, and the branch is located the left and right sides of crossbeam, provides the balance for compressing tightly of the left and right sides of rib. Referring to fig. 15, the Y-axis compressing structure 263 is similar to the X-axis compressing structure 261, and includes a mounting plate 264, a Y-axis compressing clamp 265 connected to the lower side of the mounting plate 264, a cylinder 266 and a motor 267 located above the mounting plate 264 and connected to the Y-axis compressing clamp 265, two sliders 268 are disposed on the mounting plate 264 and respectively connect two ends of the Y-axis compressing structure 263 to two adjacent beams spaced from each other on the welding worktable 33, and the main difference between the Y-axis compressing structure 263 and the X-axis compressing structure 261 is that the direction of the tooth-shaped slot formed on the Y-axis compressing clamp 265 and used for fixing the edge of the rib is perpendicular to the direction of the slot on the X-axis compressing clamp 265. The X-axis compression structure 261 and the Y-axis compression structure 263 can slide along the extension direction of the beam on which they are located, and apply compression force to different positions of the welded part.
The operation of the automatic welding system is the same as that of the automatic welding system shown in the previous embodiment, and the detailed description thereof is omitted. The difference lies in that the positions of the Y-axis compression structure 263 and the X-axis compression structure 261 in the independent compression structure are adjusted, so that more balanced auxiliary compression force is provided for the aluminum plates and the ribs in the welding process through the Y-axis compression structure 263 and the X-axis compression structure 261, and balanced auxiliary compression force is provided for the welding of the aluminum plates and the ribs with different shapes and sizes in different application scenes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. The scope of the invention is to be determined by the scope of the appended claims.

Claims (8)

1. An automatic welding system is characterized by comprising a welding device, a body feeding device and a welding part feeding device; the welding device comprises a base, a welding workbench supported by the base, a welding equipment support frame arranged on one side of the welding workbench, and welding equipment arranged on the welding equipment support frame; the welding workbench stretches across the body feeding device, and the body feeding device is used for conveying the body to be welded to a welding position preset on the welding workbench; the welding equipment support frame comprises a sliding rail which stretches across the body feeding device, the welding equipment comprises a friction stir welding host machine which is arranged on the sliding rail and can move along the extension direction of the sliding rail, and the forming direction of a welding spot of the friction stir welding host machine is the same as the extension direction of the sliding rail in the welding process; the welding part feeding device comprises a conveying structure for conveying a welding part, a grabbing arm for grabbing the welding part and a pressing part for providing positive pressure to the welding part in the welding implementation process, wherein the pressing part is used for providing limiting of the welding part perpendicular to the forming direction of the welding point in the welding implementation process;
the pressing piece comprises an independent pressing structure with an adjustable position, and the independent pressing structure comprises a first direction pressing structure and a second direction pressing structure which are used for providing different direction limiting for the welding piece;
the welding bench includes many crossbeams that are parallel to each other and keep apart each other, the welding equipment support frame still including set up in slide rail below and with the crossbeam of welding bench parallel and level, first direction compact structure install in the welding equipment support frame the crossbeam with the welding bench the crossbeam between, second direction compact structure install in on the welding bench between the crossbeam.
2. The system of claim 1, wherein the gripper arm includes a gripper and a rotation axis for controlling rotation of the gripper.
3. The system of claim 1, wherein the first direction compressing structure and the second direction compressing structure respectively comprise a mounting plate, a compressing clamp connected below the mounting plate, an air cylinder and a motor which are positioned above the mounting plate and connected with the compressing clamp, the direction of a clamping groove in the compressing clamp of the first direction compressing structure is perpendicular to the direction of a clamping groove in the compressing clamp of the second direction compressing structure, and a sliding block matched with the cross beam is further arranged on the mounting plate.
4. The system of claim 1, wherein the base of the welding device comprises platform supporting seats respectively disposed at two sides of the body feeding device, the welding bench is connected to top ends of the platform supporting seats, the number of the platform supporting seats is plural, bottom ends of the platform supporting seats located at the same side of the body feeding device are detachably connected to the same bottom plate, and the bottom ends of the platform supporting seats and the bottom plate are formed with matching guiding blocks and guiding grooves in front.
5. The system of claim 4, wherein the welding equipment support frame comprises a gantry support base juxtaposed to the platform support base, the gantry support base has a height greater than the platform support base, the slide rail is connected to the top end of the gantry support base, the bottom end of the gantry support base and the platform support base on the same side are detachably connected to the same bottom plate, and a matched guide block and a matched guide groove are formed between the bottom end of the gantry support base and the bottom plate.
6. The system of claim 5, wherein the base plate further comprises a leveling structure.
7. The system of claim 1, wherein the body feeder comprises a conveyor belt for carrying the body, the conveyor belt comprising a conveyor belt front end and a conveyor belt rear end, the conveyor belt front end comprising a plurality of individual segments, a mechanical push rod disposed between adjacent segments for adjusting the position of the body on the conveyor belt, and a drive motor for powering the conveyor belt.
8. The system of claim 1, wherein the weldment feeder further comprises a grabber arm support bracket that provides support for a grabber arm, the grabber arm support bracket comprising an X-axis track, a Y-axis track, and a Z-axis track, the grabber arm being secured to a bottom end of the Z-axis track, the X-axis track, the Y-axis track, and the Z-axis track collectively providing X-axis, Y-axis, and Z-axis displacement for the grabber arm.
CN201910684158.8A 2019-07-26 2019-07-26 Automatic welding system Active CN110394540B (en)

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JP2004276056A (en) * 2003-03-14 2004-10-07 Kawasaki Heavy Ind Ltd Two-sides friction stir joining device
CN203426589U (en) * 2013-06-14 2014-02-12 云南驰宏锌锗股份有限公司 Large-area zinc electrolysis anode plate stirring and friction welding set
CN205200851U (en) * 2015-12-01 2016-05-04 长沙长泰机器人有限公司 Flexible grasping system is used in welding
CN106166642B (en) * 2015-12-29 2019-04-09 中国科学院沈阳自动化研究所 A kind of mobile feed tooling of long weld seam welding
CN106514271B (en) * 2016-12-14 2019-01-29 宁波金凤焊割机械制造有限公司 Copper strips or copper alloy belt agitating friction soldering equipment
CN109807461B (en) * 2019-03-20 2021-07-09 江阴海虹精密机械有限公司 Friction stir welding line of water-cooling plate with complex flow channel and welding process thereof

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