Robot welding workstation for laser welding

Abstract

The invention is applicable to the technical field of automatic welding, and provides a robot welding workstation for laser welding, which comprises a main box body and further comprises a bearing assembly, the bearing assembly is positioned on the main box body, the bearing assembly comprises a bearing platform arranged at the top of the main box body, a plurality of mounting hole sites are formed in the bearing platform, and the mounting hole sites are positioned in the main box body; a rotating table is arranged in the mounting hole site, is used for bearing a to-be-welded workpiece, and is also used for driving the workpiece to rotate; the multi-axis welding manipulator is arranged on one side of the main box body, and the multi-axis welding manipulator is used for welding the workpiece on the rotating table; and the movable chassis is located at the bottom of the main box body. The welding work station has the beneficial effects that the process that an existing welding work station transports workpieces can be used for conducting preliminary simple welding treatment on the workpieces, the follow-up welding time can be shortened, and then the purpose of improving the overall welding efficiency is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic welding, and in particular relates to a robot welding workstation for laser welding. Background Art

[0002] With the development of modern industry, laser welding technology has been widely used in automobile manufacturing, aerospace, electronics and electrical, shipbuilding and other fields due to its high efficiency, precision and high quality.

[0003] With the rapid development of industrial robot technology, robot welding workstations are gradually replacing traditional manual welding. By combining laser welding technology with robot automation systems, full automation control of the welding process can be achieved, greatly improving production efficiency and welding quality.

[0004] A welding workstation in the conventional sense is composed of multiple devices, including transport equipment for transporting workpieces, manipulators for loading and unloading materials, welding robots, and fixtures for fixing workpieces. Of course, a welding workstation also refers to some equipment and instruments that can perform comprehensive welding processing. Obviously, for the current robot welding workstation, all welding work is performed on the fixture, and the welding efficiency is also based on the control program set by the welding robot. At this time, it is also very difficult to try to improve the welding efficiency. Therefore, a robot welding workstation for laser welding is proposed. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a robot welding workstation for laser welding, aiming to solve the problems mentioned in the above background technology.

[0006] The embodiment of the present invention is implemented as follows: a robot welding workstation for laser welding includes a main box and also includes: A bearing assembly is located on the main box body, and the bearing assembly includes a bearing platform arranged on the top of the main box body, and a plurality of mounting holes are opened on the bearing platform, and a rotating table is arranged in the mounting holes, and the rotating table is used to carry the workpiece to be welded, and the rotating table is also used to drive the workpiece to rotate; A multi-axis welding manipulator, which is arranged on one side of the main box and is used to weld the workpiece on the rotating table; The mobile chassis is located at the bottom of the main box body, and is used to drive the bearing components and the multi-axis welding manipulator on the main box body to move synchronously.

[0007] Preferably, the top of the main box body is an open structure, and the supporting platform is composed of four platform plates disposed on the top of the main box body. The number of mounting holes is the same as the number of platform plates, and the mounting holes and the rotating table are respectively arranged on each platform plate. A driving assembly is arranged in the main box body, and the driving assembly is used to drive the multiple platform plates to move synchronously, so that the spacing between adjacent platform plates increases or decreases synchronously.

[0008] Preferably, the driving assembly includes a cross guide frame fixedly connected transversely in the main box body, the cross guide frame is composed of two mutually perpendicular guide bars, the two ends of the guide bars are connected to the corners of the main box body, and moving blocks corresponding to the number of platform plates are slidably arranged on the cross guide frame. A connecting column is fixedly connected to the top of the moving block, and the connecting column is fixedly connected to the platform plate at the corresponding position on the top of the main box body. A driving member is arranged at the bottom of the main box body, and the driving member is used to drive the moving blocks to move synchronously on the cross guide frame.

[0009] Preferably, the driving member includes a driving motor fixedly connected to the bottom of the main housing, the output end of the driving motor is fixedly connected to a disk body horizontally arranged in the main housing, four arc-shaped guide grooves distributed in a circular shape are opened on the disk body, and a vertically arranged pin shaft is fixedly connected to the bottom of the moving block, one end of the bottom of the pin shaft is located in the arc-shaped guide groove, and the driving motor is used to drive the disk body to rotate forward or reverse.

[0010] Preferably, a plurality of rectangular openings corresponding to the positions of the rotating table on the platform plate are opened on the side surface of the main box body, and the lateral width of the rectangular openings is greater than the outline diameter of the rotating table.

[0011] Preferably, when the platform plate moves laterally, the bottom surface of the platform plate contacts the top of the main box body, and when the rotating table moves into the rectangular opening, the bottom of the rotating table contacts the inner wall of the rectangular opening.

[0012] Preferably, when the multiple platform plates are in the initial state, adjacent platform plates are provided with a reserved spacing, a telescopic part is fixedly provided in the middle of the cross guide frame, the top of the telescopic part is fixedly connected to a driving box, the output end of the driving box is a vertically arranged rotating shaft, the top of the rotating shaft is fixedly connected to a cross pressure frame, when the telescopic part and the platform are both in the initial state, the cross pressure frame is located between the platform plates, and the cross pressure frame and the multiple platforms form a planar structure.

[0013] The embodiment of the present invention provides a robot welding workstation for laser welding, which has the following beneficial effects: The present invention is a workstation with a mobile welding function that cooperates with the original automated welding workstation. First, it can replace the device for transporting workpieces in the original automated welding work. In special welding work, some spot welding work is generally performed on the edge of the workpiece first, with the purpose of pre-fixing the structure of the workpiece. It is precisely by utilizing this special situation that when the workpiece is transported on the rotating table, the multi-axis welding robot can perform some simple welding treatments on the workpiece on the rotating table, so that the welding steps can be reduced in subsequent welding work, thereby further improving the overall welding efficiency. In summary, the present invention can utilize the process of transporting workpieces by the existing welding workstation to perform preliminary simple welding treatment on the workpiece, which can reduce the subsequent welding time and thus achieve the purpose of improving the overall welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional structural diagram of a robot welding workstation for laser welding provided in an embodiment of the present invention; Figure 2 A top view of a robot welding workstation for laser welding provided by an embodiment of the present invention; Figure 3 A front view of a robot welding workstation for laser welding provided by an embodiment of the present invention; Figure 4 An internal structural diagram of the main box provided by an embodiment of the present invention; Figure 5 A diagram showing the position relationship between the platform plate and the cross guide frame provided in an embodiment of the present invention; Figure 6 A diagram showing the matching relationship between the disc body and the cross guide frame provided in an embodiment of the present invention; Figure 7 A schematic diagram of transporting workpieces by the robot welding workstation for laser welding provided in an embodiment of the present invention.

[0015] In the attached drawings: 1. Main box; 2. Load-bearing platform; 201. Platform plate; 3. Mounting holes; 4. Rotating table; 5. Multi-axis welding manipulator; 6. Mobile chassis; 7. Cross guide frame; 8. Moving block; 9. Connecting column; 10. Driving motor; 11. Disk; 12. Arc guide groove; 13. Pin shaft; 14. Rectangular opening; 15. Telescopic member; 16. Driving box; 17. Cross pressure frame; 18. Workpiece; 19. Rotating shaft. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended to limit the present invention.

[0017] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0018] like Figure 2 and Figure 3 As shown, a robot welding workstation for laser welding provided by an embodiment of the present invention includes a main box 1, and also includes: A bearing assembly, the bearing assembly is located on the main box body 1, and the bearing assembly includes a bearing platform 2 arranged on the top of the main box body 1, and a plurality of mounting holes 3 are opened on the bearing platform 2, and a rotating table 4 is arranged in the mounting holes 3, and the rotating table 4 is used to carry the workpiece 18 to be welded, and the rotating table 4 is also used to drive the workpiece 18 to rotate; A multi-axis welding manipulator 5, which is disposed on one side of the main box 1 and is used to weld the workpiece 18 on the rotating table 4; The movable chassis 6 is located at the bottom of the main box body 1 , and is used to drive the bearing assembly on the main box body 1 and the multi-axis welding manipulator 5 to move synchronously.

[0019] In one embodiment of the present invention, the present invention is used as a workstation with a mobile welding function to cooperate with the original automated welding workstation. First, it can replace the device for transporting the workpiece 18 in the original automated welding work. In special welding work, some spot welding work is generally performed on the edge of the workpiece 18 first. The purpose is to pre-fix the structure of the workpiece 18. It is precisely by utilizing this special situation that when the workpiece 18 is transported on the turntable 4, the multi-axis welding robot can perform some simple welding treatments on the workpiece 18 on the turntable 4, so that the welding steps can be reduced in subsequent welding work, thereby further improving the overall welding efficiency. In summary, the present invention can utilize the process of transporting the workpiece 18 by the existing welding workstation to perform preliminary simple welding treatment on the workpiece 18, which can reduce the subsequent welding time and achieve the purpose of improving the overall welding efficiency.

[0020] In one embodiment of the present invention, the rotating table 4 adopts existing conventional technical means and can be controlled to rotate by motor drive. Because the multi-axis manipulator is arranged on the side of the main box body 1, when performing simple welding on the workpiece 18, there is also a high possibility of angle limitation. Therefore, the rotating table 4 can adjust the orientation of the workpiece 18, and then cooperate with the multi-axis manipulator to solve the problem of limited welding angle. The mobile chassis 6 can adopt the form of an AGV transport cart in the prior art, which can automatically control the transportation of the workpiece 18. Of course, the above-mentioned simple welding also requires certain conditions, because there may be vibration problems during the movement of the workpiece 18. Therefore, the above-mentioned simple welding can be a welding work that does not require precision, such as just fixing the structure of the workpiece 18. In this case, only some simple spot welding is required.

[0021] like Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, as a preferred embodiment of the present invention, the top of the main box body 1 is an open structure, the supporting platform 2 is composed of four platform plates 201 disposed on the top of the main box body 1, the number of the mounting holes 3 is the same as the number of the platform plates 201, the mounting holes 3 and the rotating table 4 are respectively arranged on each platform plate 201, and a driving assembly is arranged in the main box body 1, and the driving assembly is used to drive the multiple platform plates 201 to move synchronously, so that the distance between adjacent platform plates 201 increases or decreases synchronously.

[0022] In one case of the present embodiment, the driving assembly includes a cross guide frame 7 which is laterally fixedly connected to the main box body 1, the cross guide frame 7 is composed of two mutually perpendicular guide rails, both ends of the guide rails are connected to the corners of the main box body 1, and moving blocks 8 corresponding to the number of platform plates 201 are slidably arranged on the cross guide frame 7, and a connecting column 9 is fixedly connected to the top of the moving block 8, and the connecting column 9 is fixedly connected to the platform plate 201 at the corresponding position of the top of the main box body 1. A driving member is arranged at the bottom of the main box body 1, and the driving member is used to drive the moving block 8 to move synchronously on the cross guide frame 7, and the driving member includes a fixed connection to the main box body 1. The driving motor 10 at the bottom, the output end of the driving motor 10 is fixedly connected to a disk body 11 arranged horizontally in the main box body 1, and four arc-shaped guide grooves 12 distributed in a circumferential shape are opened on the disk body 11. The bottom of the moving block 8 is fixedly connected to a vertically arranged pin shaft 13, and one end of the bottom of the pin shaft 13 is located in the arc-shaped guide groove 12. The driving motor 10 is used to drive the disk body 11 to rotate forward or reversely. There are many situations when the workpiece 18 is transported. If the number of workpieces 18 transported at a time is small, that is, there is one workpiece 18 on each rotating table 4, it is relatively simple for the multi-axis welding manipulator 5 to perform welding. However, if the following occurs Figure 1In the situation shown, there are multiple workpieces 18 stacked. At this time, the space between the workpieces 18 and 18 is reduced, and the problem of blocking welding is likely to occur. Therefore, the above-mentioned structure can realize the synchronous movement of the platform plate 201, that is, when the stacked workpieces 18 need to be spot-welded on the side, the drive motor 10 drives the disk 11 to rotate. Due to the cooperation of the pin shaft 13 and the arc guide groove 12, the moving block 8 can be driven to move outward on the cross guide frame 7, and the four platform plates 201 will be opened synchronously. This movement mode can increase the distance between the platform plates 201 and the platform plates 201, so that the multi-axis welding robot 5 has a larger operating space during welding. In addition, in actual use, this structural feature is not only conducive to welding work, but the opening of the platform plate 201 can make the size of the workpiece 18 that can be carried wider, such as some large-area plate-like workpieces 18, such as Figure 1 As shown, a plurality of rectangular openings 14 corresponding to the positions of the turntable 4 on the platform plate 201 are opened on the side of the main box body 1, and the lateral width of the rectangular openings 14 is larger than the contour diameter of the turntable 4. The rectangular openings 14 can provide space for the turntable 4 to follow the movement of the platform plate 201. When the platform plate 201 moves laterally, the bottom surface of the platform plate 201 contacts the top of the main box body 1. When the turntable 4 moves into the rectangular opening 14, the bottom of the turntable 4 contacts the inner wall of the rectangular opening 14. Because the platform plate 201 has only one supporting point, the connecting column 9, when the workpiece 18 is heavy, this structural feature becomes an unstable factor, and therefore requires additional supporting points. Therefore, making the bottom of the platform plate 201 directly contact with the main box body 1 can increase the stability of the platform plate 201. In addition, the cooperation between the rectangular opening 14 and the turntable 4 also has the same effect.

[0023] like Figure 1 and Figure 4 As shown, as a preferred embodiment of the present invention, when the multiple platform plates 201 are in the initial state, adjacent platform plates 201 are provided with a reserved spacing, a telescopic member 15 is fixedly provided in the middle of the cross guide frame 7, the top of the telescopic member 15 is fixedly connected with a driving box body 16, the output end of the driving box body 16 is a vertically arranged rotating shaft 19, the top of the rotating shaft 19 is fixedly connected with a cross pressure frame 17, when the telescopic member 15 and the platform are both in the initial state, the cross pressure frame 17 is located between the platform plates 201, and the cross pressure frame 17 and the multiple platforms form a planar structure.

[0024] In one case of the present embodiment, during the process of the work station driving the workpiece 18 to move, if the workpiece 18 is stacked, it needs to be fixed when the stacked structure is unstable. Therefore, the cross pressure frame 17 can be driven to move upward by the telescopic member 15, and then the cross pressure frame 17 can be controlled to rotate and adjust the position in cooperation with the driving box 16, and then the cross pressure frame 17 can be controlled to move downward by the telescopic member 15, so that the workpiece 18 can be pressed and fixed, and the problem of the workpiece 18 falling off can be prevented. In addition, the workpiece 18 may also need to be fixed during the welding process, which can also be achieved by the cross pressure frame 17. It should be noted that because the disk body 11 is arranged in the main box body 1, and the cross pressure frame 17 is located at the top of the main box body 1, and the cross pressure frame 17 can be combined with the four platform plates 201 In order to form a complete plane, the outer dimensions of the cross pressure frame 17 must be larger than those of the disk body 11. Therefore, it can be known that the movement of the platform plate 201 is limited. When the platform plate 201 is in an open state, the cross pressure frame 17 is rotated to a certain angle, and the four ends of the cross pressure frame 17 can also play a fixing role. That is, no matter how the workpiece 18 on the platform plate 201 moves, the cross pressure frame 17 can be covered due to structural limitations, and the cross pressure frame 17 can form a plane with the platform, which is very convenient for loading and unloading the workpiece 18. In addition, the telescopic member 15 can be in the form of an electric telescopic rod, and of course, it can also be in the form of a hydraulic telescopic rod. A reduction motor can be set in the drive box 16, so as to drive the cross pressure frame 17 to rotate and adjust the position.

[0025] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A robot welding workstation for laser welding, comprising a main box (1), characterized in that: Also includes: A bearing assembly, the bearing assembly is located on the main box (1), the bearing assembly comprises a bearing platform (2) arranged on the top of the main box (1), a plurality of mounting holes (3) are provided on the bearing platform (2), a rotating table (4) is arranged in the mounting holes (3), the rotating table (4) is used to bear the workpiece (18) to be welded, and the rotating table (4) is also used to drive the workpiece (18) to rotate; A multi-axis welding manipulator (5), the multi-axis welding manipulator (5) being arranged on one side of the main box (1), and the multi-axis welding manipulator (5) being used to weld a workpiece (18) on the rotating table (4); A movable chassis (6), wherein the movable chassis (6) is located at the bottom of the main box (1), and the movable chassis (6) is used to drive the bearing assembly on the main box (1) and the multi-axis welding manipulator (5) to move synchronously.

2. The robot welding workstation for laser welding according to claim 1, characterized in that: The top of the main box (1) is an open structure, the bearing platform (2) is composed of four platform plates (201) arranged on the top of the main box (1), the number of the mounting holes (3) is the same as the number of the platform plates (201), the mounting holes (3) and the rotating platform (4) are respectively arranged on each platform plate (201), and a driving component is arranged in the main box (1), and the driving component is used to drive the multiple platform plates (201) to move synchronously, so that the spacing between adjacent platform plates (201) increases or decreases synchronously.

3. The robot welding workstation for laser welding according to claim 2, characterized in that: The driving assembly comprises a cross guide frame (7) which is laterally fixedly connected in the main box (1), the cross guide frame (7) being composed of two mutually perpendicular guide rails, the two ends of which are connected to the corners of the main box (1), the cross guide frame (7) being slidably provided with moving blocks (8) corresponding to the number of platform plates (201), the top of the moving blocks (8) being fixedly connected with connecting columns (9), the connecting columns (9) being fixedly connected to the platform plates (201) at corresponding positions on the top of the main box (1), and a driving member being provided at the bottom of the main box (1), the driving member being used to drive the moving blocks (8) to move synchronously on the cross guide frame (7).

4. The robot welding workstation for laser welding according to claim 3, characterized in that: The driving member comprises a driving motor (10) fixedly connected to the bottom of the main housing (1); the output end of the driving motor (10) is fixedly connected to a disk (11) arranged transversely in the main housing (1); the disk (11) is provided with four arc-shaped guide grooves (12) distributed in a circumferential shape; the bottom of the moving block (8) is fixedly connected to a vertically arranged pin shaft (13); one end of the bottom of the pin shaft (13) is located in the arc-shaped guide groove (12); the driving motor (10) is used to drive the disk (11) to rotate in a forward or reverse direction.

5. The robot welding workstation for laser welding according to claim 2, characterized in that: The side surface of the main box body (1) is provided with a plurality of rectangular openings (14) corresponding to the positions of the rotating platform (4) on the platform plate (201), and the transverse width of the rectangular openings (14) is greater than the outline diameter of the rotating platform (4).

6. The robot welding workstation for laser welding according to claim 5, characterized in that: When the platform plate (201) moves laterally, the bottom surface of the platform plate (201) contacts the top of the main box (1); when the rotating table (4) moves into the rectangular opening (14), the bottom of the rotating table (4) contacts the inner wall of the rectangular opening (14).

7. The robot welding workstation for laser welding according to claim 3, characterized in that: When the plurality of platform plates (201) are in an initial state, adjacent platform plates (201) are provided with a reserved spacing, a telescopic member (15) is fixedly provided in the middle of the cross guide frame (7), the top of the telescopic member (15) is fixedly connected to a driving box (16), the output end of the driving box (16) is a vertically arranged rotating shaft (19), the top of the rotating shaft (19) is fixedly connected to a cross pressure frame (17), when the telescopic member (15) and the platform are both in the initial state, the cross pressure frame (17) is located between the platform plates (201), and the cross pressure frame (17) and the plurality of platforms form a planar structure.

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