Robot electric arc welding workstation

Abstract

The invention is applicable to the technical field of welding, and provides a robot electric arc welding workstation which comprises a workbench, a welding carrier arranged on the workbench and a rotating mechanism driving the welding carrier to rotate, a multi-axis manipulator is further mounted on the workbench, and a welding gun is arranged at the tail end of the multi-axis manipulator. A molded part welding mechanism is arranged on one side of the welding carrying frame and comprises two carrying discs and assemblies for driving the carrying discs to move and rotate independently, and a plurality of abutting and fixing columns capable of being adjusted in the radial direction are distributed on the carrying discs in the circumferential direction. And a barrel part welding mechanism is arranged on the other side and comprises two displacement frames, a transmission pipe, an external thread barrel, a moving ring and an abutting and fixing plate, the barrel-shaped part is clamped through an X-shaped frame, the transmission pipe is driven by a synchronous rotating assembly to rotate synchronously, and the displacement frames are close to or away from each other in combination with a distance adjusting and controlling assembly. Through integration of the multifunctional clamping and displacement system and the automatic welding equipment, efficient and high-precision welding of various workpieces is achieved, and the production efficiency and the operation reliability are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding, and particularly relates to a robot arc welding workstation. Background Art

[0002] With the rapid development of modern manufacturing, welding, as an important process for connecting metal structures, is widely used in multiple fields such as automobiles, aerospace, ships, and heavy machinery. Traditional welding operations mostly rely on manual operation, which has problems such as low efficiency, unstable welding quality, and high labor intensity, and it is difficult to meet the production requirements of large quantities and high precision.

[0003] In recent years, robot arc welding technology has gradually become popular, and precise control of the welding process is achieved through automated equipment, improving welding quality and production efficiency. However, existing welding equipment still has certain limitations in terms of clamping adaptability, welding position change flexibility, and compatibility with multiple types of workpieces. Especially when facing the mixed processing of profile types and cylindrical parts, it often requires replacing different equipment or fixtures, affecting the production rhythm and system integration.

[0004] In addition, most current welding workstations lack efficient synchronous adjustment and adaptive clamping functions, and it is difficult to achieve stable positioning and precise docking of workpieces with complex shapes. Especially when welding long profiles or large-sized cylindrical parts, welding deviations often occur due to unstable clamping or asynchronous rotation, affecting the quality of the finished product. At the same time, the ability to switch workstations and automate collaborative control during the welding process still needs to be improved.

[0005] Therefore, in view of the above current situation, there is an urgent need to develop a robot arc welding workstation to overcome the deficiencies in current practical applications. Summary of the Invention

[0006] The purpose of the present invention is to provide a robot arc welding workstation, aiming to solve the problems mentioned in the above background art.

[0007] The present invention is implemented as follows. A robot arc welding workstation includes a workbench. A welding carrier is provided on the upper side of the workbench, and a rotating mechanism for controlling the rotation of the welding carrier is also installed on the workbench. A multi-axis manipulator is also installed on the workbench, and a welding torch is installed at the end of the multi-axis manipulator. It further includes: A profile welding mechanism. A profile welding mechanism is installed on one side of the welding carrier. The profile welding mechanism includes two carrier plates. A driving and moving component for driving the independent rotation and movement of the two carrier plates is installed inside the welding carrier. A plurality of retaining columns capable of radial adjustment along the carrier plate are circumferentially distributed and installed on the carrier plate, and when one retaining column moves, the remaining retaining columns on the same carrier plate move simultaneously; Cylindrical part welding mechanism, on the other side of the welding carrier, a cylindrical part welding mechanism is installed. The cylindrical part welding mechanism includes two displacement frames. A distance adjustment component for driving the two displacement frames to approach or move away synchronously is also installed on the welding carrier. A transmission pipe is rotatably installed on the displacement frame. Fixed rings are fixed at the ends of the two transmission pipes close to each other. An external thread cylinder is also sleeved on the transmission pipe. One end of the external thread cylinder is rotatably connected to the fixed ring. A moving ring is threadedly connected to the external thread cylinder. A plurality of fastening plates are circumferentially distributed on the outer side between the moving ring and the fixed ring. The fastening plates are connected to the moving ring and the fixed ring through X-shaped frames. A synchronous rotation component for driving the two transmission pipes to rotate synchronously is also installed on the displacement frame.

[0008] Further technical solution, the multi-axis manipulator adopts a six-axis manipulator, and the multi-axis manipulator can perform position adjustment on the workbench along the length direction of the welding carrier.

[0009] Further technical solution, the rotating mechanism includes a platform frame, a first motor and a support shaft. Two platform frames are fixed on the workbench. Support shafts are rotatably installed on the two platform frames. The welding carrier is fixed between the two support shafts. A first motor drivingly connected to the support shaft is also fixed on one of the platform frames.

[0010] Further technical solution, the driving and moving component includes an adjusting telescopic cylinder, a fourth motor and a sliding seat. An adjusting cavity is opened inside the welding carrier. A second adjusting groove communicating with the adjusting cavity is opened on the surface of the welding carrier. An adjusting telescopic cylinder is fixed at each end of the adjusting cavity. Sliding seats are fixed at the ends of the two adjusting telescopic cylinders close to each other. The sliding seats are also slidably connected to the adjusting cavity. A fourth motor is fixed inside the sliding seat. The output shaft of the fourth motor passes through the second adjusting groove. The two carrier disks are respectively fixed at the output ends of the two fourth motors.

[0011] Further technical solution, a plurality of first adjusting grooves are circumferentially distributed on the carrier disk. Sliders are slidably arranged in the first adjusting grooves. A lead screw is rotatably installed in the first adjusting groove. The lead screw is threadedly connected to the slider. A knob is fixed at the outer end of the lead screw. The fastening column adopts a cylindrical structure, and one end of the fastening column is fixed to the slider. A transmission cavity is also opened in the middle of the inner side of the carrier disk. The inner end of the lead screw extends into the transmission cavity and a bevel gear is fixed at its end. The bevel gears at the inner ends of adjacent lead screws are meshed and connected.

[0012] A further technical solution is that the distance control component includes forward and reverse screw rods, guide edges and a second motor. A groove is provided on the side of the welding carrier away from the profile welding mechanism, a guide edge is fixed in the groove, and the forward and reverse screw rods are also rotatably installed in the groove. The two position adjustment frames are both threadedly connected to the forward and reverse screw rods, and the two position adjustment frames are both slidably connected to the guide edges. A second motor transmission-connected to the forward and reverse screw rods is also fixed at one end of the welding carrier. When the forward and reverse screw rods rotate, the two position adjustment frames approach or move away from each other.

[0013] A further technical solution is that the X-shaped frame includes a first support rod and a second support rod, the middle parts of the first support rod and the second support rod are rotatably connected, the inner ends of the first support rod and the second support rod are respectively hinged to the fixed ring and the movable ring, and the outer ends of the first support rod and the second support rod are respectively hinged to the two ends of the fixing plate.

[0014] A further technical solution is that the synchronous rotating component includes a connected telescopic cylinder, a cylinder bracket, a transmission column and a third motor, wherein a third motor connected to the transmission tube is fixed on one of the displacement frames, and a connected telescopic cylinder coaxial with the transmission tube is fixed on the other displacement frame through a cylinder bracket, and a transmission column slidably connected to the transmission tube and a movable cavity opened in the middle of the fixed ring is rotatably installed on the output end of the connected telescopic cylinder.

[0015] According to a further technical solution, a rotating handle is fixed to one end of the forward and reverse screw rods away from the second motor and one end of the external threaded tube close to the displacement frame.

[0016] According to a further technical solution, the cross section of the transmission column is in the shape of a regular polygon, and the end of the transmission column away from the telescopic cylinder is rounded; the end of the external threaded tube away from the fixing ring is also rotatably connected to the transmission tube.

[0017] The present invention provides a robot arc welding workstation, which has the following beneficial effects: By installing a profile welding mechanism on one side of the welding carrier and using the fixing columns on the carrier, cylindrical or cylindrical parts can be clamped and fixed; at the same time, through the cooperation between the fixing columns, long strip profiles can also be stably clamped. The driving and moving component can independently control the rotation and movement of the two carriers, which is convenient for posture adjustment according to welding requirements; in addition, the component can also drive the two carriers to approach each other so that the parts clamped by each can be docked, thereby improving the accuracy and efficiency of docking welding. When clamping longer profiles, the fixing columns on the two carriers can also work together to achieve stable support and clamping of the whole, which is convenient for the welding of accessory parts.

[0018] On the other side of the welding carrier, there is a cylindrical part welding mechanism. By rotating the external thread cylinder, the moving ring is driven to move relative to the fixed ring. Combining with the limiting structure of the X-shaped frame and the design of the fixing plate, reliable clamping of the cylindrical parts can be achieved. The clamping components on the two transmission pipes are independent of each other, and can be adapted to cylindrical parts with different inner diameters for separate clamping and abutting welding. During the abutting process, the distance adjustment component is used to control the synchronous approach or separation of the two displacement frames, so as to accurately control the welding docking state. When it is necessary to rotate the clamped parts synchronously, the synchronous rotation component can drive the two transmission pipes to rotate synchronously, ensuring that the parts clamped by the fixing plates on both sides maintain the same rotation angle, further improving the stability and reliability of the welding process.

[0019] In addition, the welding carrier is equipped with a rotating mechanism, which can realize the overall rotation of the welding carrier, so as to flexibly switch the working positions of the shaped part welding mechanism and the cylindrical part welding mechanism, and meet the displacement requirements of different welding tasks. The whole set of system realizes the automatic operation of the welding process through the coordinated operation of the multi-axis manipulator and the welding torch, significantly improving the production efficiency and welding quality.

[0020] In summary, the present invention integrates the shaped part and cylindrical part welding mechanisms, the multi-degree-of-freedom clamping and displacement system, and the automatic welding equipment, realizing the efficient and high-precision automatic welding of various types of workpieces, significantly improving the welding adaptability, production efficiency and operation reliability. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the robot arc welding workstation provided by the embodiment of the present invention; Figure 2 It is a schematic diagram of the structure of the multi-axis manipulator in the robot arc welding workstation provided by the embodiment of the present invention; Figure 3 It is an enlarged schematic diagram of the structure of the welding carrier and the installed components thereon in the robot arc welding workstation provided by the embodiment of the present invention; Figure 4 For Figure 3 Another perspective structural diagram; Figure 5 It is an axonometric view of the cylindrical part welding mechanism part in the robot arc welding workstation provided by the embodiment of the present invention; Figure 6 It is a main view sectional structure diagram of the lower part of the welding carrier in the robot arc welding workstation provided by the embodiment of the present invention; Figure 7 For Figure 6 The sectional structure diagram in the A-A direction of

[0022] In the figure: 1 - workbench, 2 - bench frame, 3 - first motor, 4 - indexing frame, 5 - cylinder welding mechanism, 6 - multi-axis manipulator, 7 - positive and negative lead screw, 8 - guiding edge, 9 - second motor, 10 - welding carrier, 11 - support shaft, 12 - profile welding mechanism, 13 - groove, 14 - welding torch, 15 - connecting telescopic cylinder, 16 - cylinder bracket, 17 - rotating handle, 18 - externally threaded cylinder, 19 - moving ring, 20 - fixed ring, 21 - first support rod, 22 - second support rod, 23 - fixing plate, 24 - transmission column, 25 - third motor, 26 - carrier plate, 27 - fixing column, 28 - knob, 29 - first adjustment groove, 30 - lead screw, 31 - slider, 32 - second adjustment groove, 33 - transmission pipe, 34 - movable cavity, 35 - adjustment telescopic cylinder, 36 - fourth motor, 37 - sliding seat, 38 - adjustment cavity, 39 - transmission cavity, 40 - bevel gear. Detailed implementation mode

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0025] As Figures 1-7 shown, a robot arc welding workstation provided by an embodiment of the present invention includes a workbench 1. A welding carrier 10 is provided on the upper side of the workbench 1, and a rotating mechanism for controlling the rotation of the welding carrier 10 is also installed on the workbench 1; A multi-axis manipulator 6 is also installed on the workbench 1, and a welding torch 14 is installed at the end of the multi-axis manipulator 6. It further includes: A profile welding mechanism 12. A profile welding mechanism 12 is installed on one side of the welding carrier 10. The profile welding mechanism 12 includes two carrier plates 26. A driving and moving component for driving the independent rotation and movement of the two carrier plates 26 is installed inside the welding carrier 10. A plurality of fixing columns 27 capable of being adjusted radially along the carrier plate 26 are circumferentially distributed and installed on the carrier plate 26, and when one fixing column 27 moves, the remaining fixing columns 27 on the same carrier plate 26 move simultaneously; The cylindrical part welding mechanism 5, on the other side of the welding carrier 10, there is a cylindrical part welding mechanism 5 installed. The cylindrical part welding mechanism 5 includes two displacement frames 4. On the welding carrier 10, there is also a distance adjustment component installed for driving the two displacement frames 4 to approach or move away synchronously. On the displacement frame 4, a transmission pipe 33 is rotatably installed. One end of the two transmission pipes 33 close to each other is fixed with a fixing ring 20. An external thread cylinder 18 is also sleeved on the transmission pipe 33. One end of the external thread cylinder 18 is rotatably connected to the fixing ring 20. A moving ring 19 is threadedly connected to the external thread cylinder 18. On the outer circumference between the moving ring 19 and the fixing ring 20, a plurality of fixing plates 23 are circumferentially distributed. The fixing plates 23 are connected to the moving ring 19 and the fixing ring 20 through an X-shaped frame. On the displacement frame 4, there is also a synchronous rotation component installed for driving the two transmission pipes 33 to rotate synchronously.

[0026] In the embodiment of the present invention, by installing the shaped part welding mechanism 12 on one side of the welding carrier 10, and using the fixing columns 27 on the carrier plate 26, the clamping and fixing of cylindrical or cylindrical parts can be realized; at the same time, through the cooperation between two fixing columns 27, the long strip-shaped profiles can also be stably clamped. The driving and moving component can independently control the rotation and movement of the two carrier plates 26, which is convenient for attitude adjustment according to welding requirements; in addition, this component can also drive the two carrier plates 26 to approach each other, so that the parts clamped by each can be docked, thereby improving the accuracy and efficiency of butt welding. When clamping a longer profile, the fixing columns 27 on the two carrier plates 26 can also cooperate to realize the stable support and clamping of the whole, which is convenient for the welding process of accessory parts.

[0027] On the other side of the welding carrier 10, there is a cylindrical part welding mechanism 5. By rotating the external thread cylinder 18 to drive the moving ring 19 to move relative to the fixing ring 20, and combined with the limiting structure of the X-shaped frame and the design of the fixing plates 23, the reliable clamping of cylindrical parts can be realized. The clamping components on the two transmission pipes 33 are independent of each other, and can adapt to cylindrical parts with different inner diameters to be clamped and butt-welded respectively. During the butting process, the distance adjustment component is used to control the two displacement frames 4 to approach or move away synchronously, so as to accurately control the welding butt state. When it is necessary to rotate and clamp the parts synchronously, the synchronous rotation component can drive the two transmission pipes 33 to rotate synchronously, ensuring that the parts clamped by the fixing plates 23 on both sides maintain the same rotation angle, further improving the stability and reliability of the welding process.

[0028] In addition, the welding carrier 10 is equipped with a rotating mechanism, which can realize the overall rotation of it, so as to flexibly switch the working positions of the shaped part welding mechanism 12 and the cylindrical part welding mechanism 5, and meet the displacement requirements of different welding tasks. The whole set of system realizes the automatic operation of the welding process through the coordinated operation of the multi-axis manipulator 6 and the welding torch 14, significantly improving the production efficiency and welding quality.

[0029] In summary, the present invention realizes efficient and high-precision automatic welding of various types of workpieces through integrated molded parts and cylinder welding mechanisms, multi-degree-of-freedom clamping and displacement systems, and automated welding equipment, and significantly improves welding adaptability, production efficiency, and operation reliability.

[0030] like Figures 1-2 As shown, as a preferred embodiment of the present invention, the multi-axis manipulator 6 adopts a six-axis manipulator, and the multi-axis manipulator 6 can adjust the position on the workbench 1 along the length direction of the welding carrier 10. The specific selection and position adjustment structure are not limited and can be set as needed.

[0031] The rotating mechanism includes a stand 2, a first motor 3 and a support shaft 11. Two stands 2 are fixed on the workbench 1. The two stands 2 are rotatably mounted with support shafts 11. The welding carrier 10 is fixed between the two support shafts 11. One of the stands 2 is also fixed with a first motor 3 that is transmission-connected to the support shaft 11. Through this arrangement, the welding carrier 10 can be driven to rotate stably and reliably.

[0032] like Figure 4 , 6 As shown in Figures 7 and 8, as a preferred embodiment of the present invention, the driving moving assembly includes an adjusting telescopic cylinder 35, a fourth motor 36 and a slide 37. An adjusting cavity 38 is provided on the inner side of the welding carrier 10, and a second adjusting groove 32 connected to the adjusting cavity 38 is provided on the surface of the welding carrier 10. An adjusting telescopic cylinder 35 is fixed to each end of the adjusting cavity 38, and a slide 37 is fixed to each end of the two adjusting telescopic cylinders 35. The slide 37 is also slidably connected to the adjusting cavity 38. A fourth motor 36 is fixed to the inner side of the slide 37, and the output shaft of the fourth motor 36 passes through the second adjusting groove 32. The two carriers 26 are respectively fixed to the output ends of the two fourth motors 36. The sliding contact surface between the slide 37 and the adjusting cavity 38 is coated with a polytetrafluoroethylene wear-resistant coating, and the friction coefficient is ≤0.05, to ensure long-term stability.

[0033] The carrier plate 26 is provided with a plurality of first adjustment grooves 29 distributed circumferentially, a slider 31 is slidably provided in the first adjustment groove 29, a screw rod 30 is also rotatably installed in the first adjustment groove 29, the screw rod 30 is threadedly connected to the slider 31, a knob 28 is fixed to the outer end of the screw rod 30, the retaining column 27 adopts a cylindrical structure, and one end of the retaining column 27 is fixedly connected to the slider 31; a transmission cavity 39 is also provided in the middle part of the inner side of the carrier plate 26, the inner end of the screw rod 30 extends into the transmission cavity 39 and a bevel gear 40 is fixed at its end, and the bevel gears 40 at the inner ends of two adjacent screw rods 30 are meshed and connected.

[0034] During application, only one knob 28 needs to be rotated. By means of the transmission of the bevel gear 40, multiple lead screws 30 can be rotated simultaneously. Corresponding to the thread structures of the lead screws 30 arranged, multiple sliders 31 can be driven to gather inward or diverge outward, realizing the rapid clamping and fixing of the workpiece. The fourth motor 36 can drive the carrier plate 26 to rotate, and the adjusting telescopic cylinder 35 can adjust the position of the sliding seat 37 to meet flexible and reliable adaptation adjustment.

[0035] As Figure 1 , 3 As shown in FIGS. 4 and 5, as a preferred embodiment of the present invention, the distance adjustment assembly includes a left - right lead screw 7, a guide rib 8, and a second motor 9. A groove 13 is formed on one side of the welding carrier 10 away from the profile welding mechanism 12. The guide rib 8 is fixed in the groove 13, and the left - right lead screw 7 is also rotatably installed in the groove 13. Both of the displacement frames 4 are threadedly connected to the left - right lead screw 7, and both of the displacement frames 4 are slidably connected to the guide rib 8. One end of the welding carrier 10 is also fixed with a second motor 9 that is in transmission connection with the left - right lead screw 7. When the left - right lead screw 7 rotates, the two displacement frames 4 approach or move away from each other.

[0036] The X - shaped frame includes a first support rod 21 and a second support rod 22. The middle parts of the first support rod 21 and the second support rod 22 are rotatably connected. The inner ends of the first support rod 21 and the second support rod 22 are respectively hinged to the fixed ring 20 and the moving ring 19, and the outer ends of the first support rod 21 and the second support rod 22 are respectively hinged to both ends of the abutting plate 23. In this way, when the moving ring 19 moves, the adjustment movement of the abutting plate 23 can be realized by means of the transmission of the first support rod 21 and the second support rod 22.

[0037] The synchronous rotation assembly includes a connecting telescopic cylinder 15, a cylinder bracket 16, a transmission column 24, and a third motor 25. A third motor 25 in transmission connection with the transmission tube 33 is fixed on one of the displacement frames 4, and a connecting telescopic cylinder 15 coaxial with the transmission tube 33 is fixed on the other displacement frame 4 through the cylinder bracket 16. The output end of the connecting telescopic cylinder 15 is rotatably installed with a transmission column 24 that is slidably connected to the transmission tube 33 and the movable cavity 34 formed in the middle of the fixed ring 20. By driving one transmission tube 33 to rotate through the third motor 25, after the parts are installed, the transmission column 24 can be driven by the connecting telescopic cylinder 15 to extend into the transmission tube 33 connected to the third motor 25 to realize transmission connection, so that the two transmission tubes 33 rotate synchronously.

[0038] Preferably, a rotating handle 17 is respectively fixed to one end of the left - right lead screw 7 away from the second motor 9 and one end of the external thread cylinder 18 close to the displacement frame 4. There is no limitation on the rotating handle 17, as long as it can rotate the left - right lead screw 7 and the external thread cylinder 18. Here, manual and electric driving methods for the left - right lead screw 7 are provided, which are flexible and convenient.

[0039] Preferably, the cross-section of the transmission column 24 is in a regular polygon shape to ensure reliable transmission. The end of the transmission column 24 away from the connecting telescopic cylinder 15 is rounded to facilitate the insertion of the transmission column 24 into the transmission tube 33 connected to the third motor 25. To improve the reliability of the external thread cylinder 18, the end of the external thread cylinder 18 away from the fixing ring 20 is also rotatably connected to the transmission tube 33.

[0040] In addition, a laser safety grating (not shown) is installed around the workbench 1. When a person is detected to invade the welding area, an emergency stop signal is automatically triggered; the welding torch 14 is equipped with a splash-proof shield (not shown), which is made of high-temperature resistant ceramic material and can withstand an instantaneous high temperature of 2000 °C.

[0041] In the above embodiments of the present invention, a robot arc welding workstation is provided, and the working principle is as follows: By respectively arranging a profile welding mechanism 12 and a cylindrical part welding mechanism 5 on both sides of the welding carrier 10, flexible clamping and welding of workpieces with different shapes can be realized.

[0042] During the profile welding process, the clamping and fixing of cylindrical, cylindrical and strip-shaped profiles can be realized by using the fixing columns 27 on the carrier plate 26. The driving and moving assembly includes an adjusting telescopic cylinder 35, a fourth motor 36 and a sliding seat 37, which can independently control the rotation and movement of the two carrier plates 26, facilitating attitude adjustment according to welding requirements. In addition, this assembly can also drive the two carrier plates 26 to approach each other, enabling the parts clamped by each to be butt-jointed, thereby improving the accuracy and efficiency of butt welding. When it is necessary to clamp a long profile, the coordinated action of the fixing columns 27 on the two carrier plates 26 can be used to realize the stable support and clamping of the whole profile, facilitating the welding process of accessory parts.

[0043] For the cylindrical part welding, the cylindrical part welding mechanism 5 drives the moving ring 19 to move relative to the fixing ring 20 by rotating the external thread cylinder 18. Combined with the limiting structure of the X-shaped frame and the design of the fixing plate 23, reliable clamping of the cylindrical part can be realized. The clamping components on the two transmission tubes 33 are independent of each other and can be adapted to cylindrical parts with different inner diameters for separate clamping and butt welding. The distance adjustment assembly includes a positive and negative lead screw 7, a guide edge 8 and a second motor 9. By controlling the synchronous approach or separation of the two displacement frames 4, the welding butt state can be accurately controlled. The synchronous rotation assembly consists of a connecting telescopic cylinder 15, a cylinder bracket 16, a transmission column 24 and a third motor 25, which can drive the two transmission tubes 33 to rotate synchronously when needed, ensuring that the parts clamped by the fixing plates 23 on both sides maintain the same rotation angle, improving the stability and reliability of the welding process.

[0044] The welding carrier 10 is equipped with a rotating mechanism, including a bench 2, a first motor 3 and a support shaft 11, which can realize its overall rotation, so as to flexibly switch the working positions of the profile welding mechanism 12 and the cylinder welding mechanism 5, and meet the position-changing requirements of different welding tasks. The whole system realizes the automatic operation of the welding process through the coordinated operation of the multi-axis manipulator 6 and the welding torch 14, significantly improving the production efficiency and welding quality.

[0045] In summary, by integrating the profile welding mechanism 12, the cylinder welding mechanism 5, the multi-degree-of-freedom clamping and position-changing system, and the automatic welding equipment, the present invention realizes the efficient and high-precision automatic welding of various types of workpieces, improving the welding adaptability, production efficiency and operation reliability.

[0046] The control of each component can adopt the PLC controller disclosed in the prior art. The models and circuit connections of each component are not specifically limited and can be flexibly set in actual applications. The first motor 3, the second motor 9, the third motor 25 and the fourth motor 36 can be equipped with speed reducers (not shown) as required to meet the transmission requirements. The connecting telescopic cylinder 15 and the adjusting telescopic cylinder 35 can be selected as hydraulic cylinders or electric telescopic cylinders as required.

[0047] The circuits, electronic components and modules involved are all prior art and can be fully realized by those skilled in the art. Needless to say, the content protected by the present invention does not involve the improvement of software and methods.

[0048] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0049] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A robot arc welding workstation, comprising a workbench (1), a welding carrier (10) being provided on the upper side of the workbench (1), and a rotating mechanism for controlling the rotation of the welding carrier (10) being installed on the workbench (1); The workbench (1) is also equipped with a multi-axis manipulator (6), and a welding gun (14) is installed at the end of the multi-axis manipulator (6), characterized in that: Also includes: A profile welding mechanism (12), wherein the profile welding mechanism (12) is installed on one side of the welding carrier (10), the profile welding mechanism (12) comprises two carriers (26), and a driving moving assembly for driving the two carriers (26) to rotate and move independently is installed on the inner side of the welding carrier (10); a plurality of retaining columns (27) which can be radially adjusted along the carrier (26) are installed circumferentially on the carrier (26), and when one of the retaining columns (27) moves, the remaining retaining columns (27) on the same carrier (26) move simultaneously; The cylindrical welding mechanism (5) is installed on the other side of the welding carrier (10), and the cylindrical welding mechanism (5) comprises two displacement racks (4). The welding carrier (10) is also installed with a distance control component for driving the two displacement racks (4) to move synchronously closer or farther away; a transmission tube (33) is rotatably installed on the displacement rack (4), a fixing ring (20) is fixed to the adjacent ends of the two transmission tubes (33), and a sleeve is also provided on the transmission tube (33). An externally threaded barrel (18), one end of which is rotatably connected to a fixed ring (20), and a movable ring (19) is threadedly connected to the externally threaded barrel (18); a plurality of retaining plates (23) are circumferentially distributed on the outer side between the movable ring (19) and the fixed ring (20), and the retaining plates (23) are connected to the movable ring (19) and the fixed ring (20) via an X-shaped frame; and a synchronous rotation component for driving the two transmission tubes (33) to rotate synchronously is also installed on the displacement frame (4).

2. The robotic arc welding workstation according to claim 1, characterized in that: The multi-axis manipulator (6) is a six-axis manipulator, and the multi-axis manipulator (6) is capable of adjusting the position on the workbench (1) along the length direction of the welding carrier (10).

3. The robotic arc welding workstation according to claim 1, characterized in that: The rotating mechanism comprises a stand (2), a first motor (3) and a support shaft (11); Two platforms (2) are fixed on the workbench (1), and support shafts (11) are rotatably mounted on the two platforms (2). The welding carrier (10) is fixed between the two support shafts (11), and a first motor (3) drivingly connected to the support shaft (11) is also fixed on one of the platforms (2).

4. The robot arc welding workstation according to any one of claims 1 to 3, characterized in that: The driving and moving assembly comprises an adjusting telescopic cylinder (35), a fourth motor (36) and a sliding seat (37); An adjustment cavity (38) is provided on the inner side of the welding carrier (10), and a second adjustment groove (32) communicating with the adjustment cavity (38) is provided on the surface of the welding carrier (10); An adjusting telescopic cylinder (35) is fixed to each of the two ends of the adjusting cavity (38); a slide seat (37) is fixed to each of the ends of the two adjusting telescopic cylinders (35) that are close to each other; the slide seat (37) is also slidably connected to the adjusting cavity (38); a fourth motor (36) is fixed to the inner side of the slide seat (37); an output shaft of the fourth motor (36) passes through the second adjusting slot (32); and the two carrier plates (26) are fixed to the output ends of the two fourth motors (36), respectively.

5. The robotic arc welding workstation according to any one of claims 1 to 3, characterized in that: The carrier plate (26) is provided with a plurality of first adjustment grooves (29) distributed in a circumferential direction, a slider (31) is slidably provided in the first adjustment groove (29), a screw rod (30) is also rotatably installed in the first adjustment groove (29), the screw rod (30) is threadedly connected to the slider (31), and a knob (28) is fixed to the outer end of the screw rod (30); The retaining column (27) adopts a cylindrical structure, and one end of the retaining column (27) is fixedly connected to the sliding block (31); A transmission cavity (39) is also provided in the middle of the inner side of the carrier plate (26). The inner end of the screw rod (30) extends into the transmission cavity (39) and a bevel gear (40) is fixed to the end of the screw rod (30). The bevel gears (40) at the inner ends of two adjacent screw rods (30) are meshed and connected.

6. The robot arc welding workstation according to any one of claims 1 to 3, characterized in that: The distance control assembly comprises forward and reverse screw rods (7), guide edges (8) and a second motor (9); A groove (13) is formed on a side of the welding carrier (10) away from the profile welding mechanism (12), a guide edge (8) is fixed in the groove (13), and a forward and reverse screw rod (7) is rotatably installed in the groove (13); The two displacement racks (4) are both threadedly connected to the forward and reverse screw rods (7), and the two displacement racks (4) are both slidably connected to the guide edge (8); A second motor (9) which is transmission-connected to the forward and reverse screw rods (7) is also fixed to one end of the welding carrier (10); when the forward and reverse screw rods (7) rotate, the two displacement racks (4) move closer to or farther from each other.

7. The robotic arc welding workstation according to any one of claims 1 to 3, characterized in that: The X-shaped frame comprises a first support rod (21) and a second support rod (22); The middle parts of the first support rod (21) and the second support rod (22) are rotatably connected, the inner ends of the first support rod (21) and the second support rod (22) are respectively hinged to the fixed ring (20) and the movable ring (19), and the outer ends of the first support rod (21) and the second support rod (22) are respectively hinged to the two ends of the fixing plate (23).

8. The robotic arc welding workstation according to any one of claims 1 to 3, characterized in that: The synchronous rotation assembly comprises a connecting telescopic cylinder (15), a cylinder bracket (16), a transmission column (24) and a third motor (25); A third motor (25) drivingly connected to the transmission tube (33) is fixed on one of the displacement racks (4), and a connecting telescopic cylinder (15) coaxial with the transmission tube (33) is fixed on the other displacement rack (4) via a cylinder bracket (16), and a transmission column (24) slidably connected to the transmission tube (33) and a movable cavity (34) opened in the middle of the fixing ring (20) is rotatably mounted on the output end of the connecting telescopic cylinder (15).

9. The robotic arc welding workstation according to claim 6, characterized in that: A rotating handle (17) is fixed to one end of the forward and reverse screw rod (7) away from the second motor (9) and one end of the external threaded barrel (18) close to the displacement frame (4), respectively.

10. The robotic arc welding workstation according to claim 8, characterized in that: The cross section of the transmission column (24) is in the shape of a regular polygon, and the end of the transmission column (24) away from the end connected to the telescopic cylinder (15) is rounded; One end of the external threaded barrel (18) away from the fixing ring (20) is also rotatably connected to the transmission tube (33).

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