A robotic welding workstation for laser welding

Abstract

The present invention is applicable to the field of automatic welding technology and provides a robot welding workstation for laser welding, including a main box body, and further including: a bearing assembly located on the main box body. The bearing assembly includes a bearing platform arranged on the top of the main box body. A plurality of mounting holes are provided on the bearing platform, and a rotating table is arranged in the mounting holes. The rotating table is used to carry the workpiece to be welded and is also used to drive the workpiece to rotate; a multi-axis welding manipulator arranged on one side of the main box body, and the multi-axis welding manipulator is used to weld the workpiece on the rotating table; a mobile chassis located at the bottom of the main box body. The beneficial effects are as follows: The present invention can utilize the process of transporting the workpiece 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.

Description

Technical Field

[0001] The present invention belongs to the technical field of automatic welding, and particularly 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 fields such as automobile manufacturing, aerospace, electronics and electrical appliances, shipbuilding, etc. due to its characteristics of high efficiency, precision and high quality.

[0003] With the rapid development of industrial robot technology, robot welding workstations have gradually replaced traditional manual welding. By combining laser welding technology with a robot automation system, full-automatic control of the welding process can be achieved, greatly improving production efficiency and welding quality.

[0004] Conventionally, a welding workstation consists of multiple devices, including a transportation device for transporting workpieces, a manipulator for loading and unloading, a welding robot, and a fixture for fixing workpieces, etc. 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 carried out on the fixture, and the welding efficiency also depends on the control program set by the welding robot. At this time, it is very difficult to further 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 art.

[0006] The embodiments of the present invention are implemented as follows. A robot welding workstation for laser welding includes a main box body, and further includes:

[0007] A bearing assembly, the bearing assembly is located on the main box body. The bearing assembly includes a bearing platform arranged on the top of the main box body. A plurality of mounting holes are provided on the bearing platform, and a rotating table is arranged in the mounting holes. The rotating table is used to bear the workpiece to be welded, and the rotating table is also used to drive the workpiece to rotate;

[0008] A multi-axis welding manipulator, the multi-axis welding manipulator is arranged on one side of the main box body, and the multi-axis welding manipulator is used to weld the workpiece on the rotating table;

[0009] A moving chassis, the moving chassis is located at the bottom of the main box body, and the moving chassis is used to drive the bearing assembly and the multi-axis welding manipulator on the main box body to move synchronously.

[0010] Preferably, the top of the main box body is an open structure. The bearing platform is composed of four platform plates separately placed on the top of the main box body. The number of mounting holes is the same as that of the platform plates. The mounting holes and the rotating table are respectively arranged on each platform plate. A driving component is arranged in the main box body. The driving component is used to drive the plurality of platform plates to move synchronously, so that the distance between adjacent platform plates increases or decreases synchronously.

[0011] Preferably, the driving component includes a cross guide frame fixedly connected horizontally in the main box body. The cross guide frame is composed of two mutually perpendicular guide rails. The two ends of the guide rails are connected to the corners of the main box body. A moving block corresponding to the number of platform plates is slidably arranged on the cross guide frame. A connecting column is fixedly connected to the top of the moving block. 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 in the main box body. The driving member is used to drive the moving blocks to move synchronously on the cross guide frame.

[0012] Preferably, the driving member includes a driving motor fixedly connected to the bottom in the main box body. The output end of the driving motor is fixedly connected with a disk horizontally arranged in the main box body. Four arc-shaped guide grooves distributed in a circumferential shape are formed on the disk. A vertical 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. The driving motor is used to drive the disk to rotate forward or backward.

[0013] Preferably, a plurality of rectangular openings corresponding to the positions of the rotating tables on the platform plates are formed on the side surface of the main box body. The horizontal width of the rectangular openings is greater than the contour diameter of the rotating tables.

[0014] Preferably, when the platform plate moves horizontally, the bottom surface of the platform plate contacts the top of the main box body. When the rotating table moves into the rectangular opening, the bottom of the rotating table contacts the inner wall of the rectangular opening.

[0015] Preferably, when the plurality of platform plates are in the initial state, a reserved distance is provided between adjacent platform plates. A telescopic member is fixedly arranged in the middle of the cross guide frame. The top of the telescopic member is fixedly connected with a driving box body. The output end of the driving box body is a vertical rotating shaft. A cross pressing frame is fixedly connected to the top of the rotating shaft. When the telescopic member and the platform are both in the initial state, the cross pressing frame is located between the platform plates, and the cross pressing frame and the plurality of platform plates form a planar structure.

[0016] The beneficial effects of a robot welding workstation for laser welding provided by an embodiment of the present invention are as follows:

[0017] The present invention is combined with the original automated welding workstation as a workstation with a mobile welding function. Firstly, it can replace the device for transporting workpieces in the original automated welding work. In special welding work, spot welding is generally carried out at the edge positions of some workpieces first, aiming to pre-fix the structure of the workpieces. Taking advantage of this special situation, 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. In this way, the welding steps can be reduced in the subsequent welding work, thereby further improving the overall welding efficiency. To sum up, the present invention can utilize the process of transporting workpieces by the existing welding workstation to perform preliminary simple welding treatments on the workpieces, reduce the subsequent welding time, and thus achieve the purpose of improving the overall welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 6 is a three-dimensional structure diagram of a robot welding workstation for laser welding provided by an embodiment of the present invention;

[0019] Figure 2 FIG. 7 is a top view of a robot welding workstation for laser welding provided by an embodiment of the present invention;

[0020] Figure 3 FIG. 8 is a front view of a robot welding workstation for laser welding provided by an embodiment of the present invention;

[0021] Figure 4 FIG. 9 is an internal structure diagram of the main box body provided by an embodiment of the present invention;

[0022] Figure 5 FIG. 10 is a positional relationship diagram of the platform plate and the cross guide frame provided by an embodiment of the present invention;

[0023] Figure 6 FIG. 11 is a mating relationship diagram of the disk body and the cross guide frame provided by an embodiment of the present invention;

[0024] Figure 7 FIG. 12 is a schematic diagram of the robot welding workstation for laser welding provided by an embodiment of the present invention for transporting workpieces.

[0025] In the drawings: 1. Main box body; 2. Carrying platform; 201. Platform plate; 3. Mounting hole positions; 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 body; 12. Arc-shaped guide groove; 13. Pin shaft; 14. Rectangular opening; 15. Telescopic member; 16. Driving box body; 17. Cross pressing frame; 18. Workpiece; 19. Rotating shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, 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.

[0027] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0028] As Figure 2 and Figure 3 shown, a robotic welding workstation for laser welding provided by an embodiment of the present invention includes a main box body 1, and further includes:

[0029] A carrying component, the carrying component is located on the main box body 1. The carrying component includes a carrying platform 2 arranged on the top of the main box body 1. A plurality of mounting holes 3 are provided on the carrying platform 2. A rotating table 4 is arranged in the mounting holes 3. 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;

[0030] A multi-axis welding manipulator 5, the multi-axis welding manipulator 5 is arranged on one side of the main box body 1, and the multi-axis welding manipulator 5 is used to weld the workpiece 18 on the rotating table 4;

[0031] A moving chassis 6, the moving chassis 6 is located at the bottom of the main box body 1, and the moving chassis 6 is used to drive the carrying component and the multi-axis welding manipulator 5 on the main box body 1 to move synchronously.

[0032] In an embodiment of the present invention, the present invention is used in cooperation with the original automated welding workstation as a workstation with a mobile welding function. First, it can replace the device for transporting the workpiece 18 in the original automated welding work. In special welding work, spot welding work on the edge position of some workpieces 18 is generally carried out first, aiming to pre-fix the structure of the workpiece 18. Just using this special situation, when the workpiece 18 is transported on the rotating table 4, the multi-axis welding robot can perform some simple welding treatments on the workpiece 18 on the rotating table 4. In this way, the welding steps can be reduced in the subsequent welding work, thereby further improving the overall welding efficiency. To sum up, the present invention can utilize the process of transporting the workpiece 18 by the existing welding workstation to perform preliminary simple welding treatments on the workpiece 18, reduce the subsequent welding time, and thus achieve the purpose of improving the overall welding efficiency.

[0033] In an example of the present invention, the rotary table 4 adopts existing conventional technical means and can be controlled to rotate by means of a motor drive. Since the multi-axis manipulator is arranged on the side of the main box body 1, when performing simple welding treatment on the workpiece 18, there is also likely to be a problem of limited angle. Therefore, the rotary 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 and can automatically control the transport of the workpiece 18. Of course, the above simple welding also requires certain conditions. Because during the movement of the workpiece 18, there may be a problem of vibration. Therefore, the above simple welding can be welding work that does not require high precision. For example, only fixing the structure of the workpiece 18, and in this case, only some simple spot welding is required.

[0034] As Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 shown, as a preferred embodiment of the present invention, the top of the main box body 1 is an open structure. The bearing platform 2 is composed of four platform plates 201 separately arranged on the top of the main box body 1. The number of mounting holes 3 is the same as that of the platform plates 201. The mounting holes 3 and the rotary table 4 are respectively arranged on each platform plate 201. A driving component is arranged in the main box body 1. The driving component is used to drive the plurality of platform plates 201 to move synchronously, so that the distance between adjacent platform plates 201 increases or decreases synchronously.

[0035] In one case of this embodiment, the driving component includes a cross guide frame 7 fixedly connected horizontally in the main box body 1. The cross guide frame 7 is composed of two mutually perpendicular guide rails. The two ends of the guide rails are connected to the corners of the main box body 1. A moving block 8 corresponding to the number of platform plates 201 is slidably arranged on the cross guide frame 7. A connecting column 9 is fixedly connected to the top of the moving block 8. The connecting column 9 is fixedly connected to the platform plate 201 at the corresponding position on the top of the main box body 1. A driving member is arranged at the bottom in the main box body 1. The driving member is used to drive the moving block 8 to move synchronously on the cross guide frame 7. The driving member includes a driving motor 10 fixedly connected to the bottom in the main box body 1. The output end of the driving motor 10 is fixedly connected with a disk body 11 horizontally arranged in the main box body 1. Four arc-shaped guide grooves 12 distributed in a circular shape are formed on the disk body 11. A vertical pin shaft 13 is fixedly connected to the bottom of the moving block 8. 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 backward. There are various situations during the transportation of the workpiece 18. If the number of workpieces 18 transported at one time is small, that is, there is one workpiece 18 on each rotary table 4, at this time, the multi-axis welding manipulator 5 performs welding relatively simply. However, if there is a situation such as Figure 1In the shown situation, there are multiple workpieces 18 stacked, and at this time, the space between the workpieces 18 is reduced, and it is very likely that the problem of blocking welding will occur. Therefore, the synchronous movement of the platform plate 201 can be realized through the above structure. That is, when the stacked workpieces 18 need to be spot-welded on the side, the driving motor 10 drives the disc body 11 to rotate. Due to the cooperation of the pin shaft 13 and the arc-shaped guide groove 12, the moving block 8 can be driven to move outward on the cross-shaped guide frame 7, and the four platform plates 201 will open synchronously. And this movement mode can increase the distance between the platform plates 201 and the platform plates 201, so that the multi-axis welding manipulator 5 has a larger operable space during welding. In addition, in the actual application process, this structural feature is not only beneficial to the welding work. The opening of the platform plate 201 can make the size of the loadable workpieces 18 more extensive. For example, some large-area plate-shaped workpieces 18, such as Figure 1 As shown, a plurality of rectangular openings 14 corresponding to the positions of the rotating platforms 4 on the platform plates 201 are opened on the side surface of the main box body 1. The transverse width of the rectangular openings 14 is greater than the contour diameter of the rotating platforms 4. The rectangular openings 14 can provide space for the rotating platforms 4 to move following the platform plates 201. When the platform plates 201 move horizontally, the bottom surface of the platform plates 201 is in contact with the top of the main box body 1. When the rotating platforms 4 move into the rectangular openings 14, the bottom of the rotating platforms 4 is in contact with the inner wall of the rectangular openings 14. Because the platform plates 201 have only one support point, the connecting column 9, when the weight of the workpieces 18 is large, this structural feature is an unstable factor. Therefore, an additional support point is needed. Therefore, directly contacting the bottom of the platform plates 201 with the main box body 1 can increase the stability of the platform plates 201. In addition, the cooperation between the rectangular openings 14 and the rotating platforms 4 also has the same effect.

[0036] Such as Figure 1 and Figure 4 As shown, as a preferred embodiment of the present invention, when the plurality of platform plates 201 are in the initial state, a reserved distance is provided between adjacent platform plates 201. A telescopic member 15 is fixedly provided in the middle of the cross-shaped guide frame 7. The top of the telescopic member 15 is fixedly connected to 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 to a cross-shaped pressing frame 17. When the telescopic member 15 and the platform are both in the initial state, the cross-shaped pressing frame 17 is located between the platform plates 201, and the cross-shaped pressing frame 17 and the plurality of platforms form a planar structure.

[0037] In a case of this embodiment, during the process of the workstation driving the workpiece 18 to move, if the workpieces 18 are stacked, then in the case of an unstable stacked structure, fixing treatment is required. Therefore, the telescopic member 15 can be used to drive the cross pressing frame 17 to move upward, and then cooperate with the driving box 16 to control the cross pressing frame 17 to rotate and adjust the position. Then, the telescopic member 15 is used to control the cross pressing frame 17 to move downward, so that the workpiece 18 can be tightly 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 through the cross pressing frame 17. It should be noted that since the disk body 11 is arranged in the main box body 1, and the cross pressing frame 17 is located at the top of the main box body 1, and the cross pressing frame 17 can form a complete plane with the four platform plates 201, the outer dimension of the cross pressing frame 17 must be larger than that of the disk body 11. Therefore, it can be known that the movement amount of the platform plate 201 is limited. When the platform plate 201 is in the open state, rotating the cross pressing frame 17 by a certain angle, the four ends of the cross pressing frame 17 can also play a fixing role, that is, no matter how the workpiece 18 on the platform plate 201 moves, due to structural limitations, the cross pressing frame 17 can also cover it, and the cross pressing 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 arranged in the driving box 16, so as to drive the cross pressing frame 17 to rotate and adjust the position.

[0038] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0040] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A robotic welding workstation for laser welding, comprising a main box body (1), characterized in that, Further included are: A bearing assembly located on the main box body (1). The bearing assembly includes a bearing platform (2) provided on the top of the main box body (1). A plurality of mounting holes (3) are formed in 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) arranged on one side of the main box body (1). The multi-axis welding manipulator (5) is used to weld the workpiece (18) on the rotating table (4); A moving chassis (6) located at the bottom of the main box body (1). The moving chassis (6) is used to drive the bearing assembly and the multi-axis welding manipulator (5) on the main box body (1) to move synchronously; The top of the main box body (1) is an open structure. The bearing platform (2) is composed of four platform plates (201) separately arranged on the top of the main box body (1). The number of the mounting holes (3) is the same as that of the platform plates (201). The mounting holes (3) and the rotating table (4) are respectively arranged on each platform plate (201). A driving assembly is arranged in the main box body (1). The driving assembly is used to drive the plurality of platform plates (201) to move synchronously, so that the distance between adjacent platform plates (201) increases or decreases synchronously; The driving assembly includes a cross guide frame (7) fixedly connected horizontally in the main box body (1). The cross guide frame (7) is composed of two mutually perpendicular guide rails. The two ends of the guide rails are connected to the corners of the main box body (1). A plurality of moving blocks (8) corresponding to the number of the platform plates (201) are slidably arranged on the cross guide frame (7). A connecting column (9) is fixedly connected to the top of the moving block (8). The connecting column (9) is fixedly connected to the platform plate (201) at the corresponding position on the top of the main box body (1). A driving member is arranged at the bottom in the main box body (1). The driving member is used to drive the moving blocks (8) to move synchronously on the cross guide frame (7); The driving member includes a driving motor (10) fixedly connected to the bottom in the main box body (1). The output end of the driving motor (10) is fixedly connected with a disc body (11) horizontally arranged in the main box body (1). Four arc-shaped guide grooves (12) distributed in a circumferential manner are formed in the disc body (11). A vertical pin shaft (13) is fixedly connected to the bottom of the moving block (8). 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 disc body (11) to rotate forward or backward.

2. The robot welding workstation for laser welding according to claim 1, characterized in that, A plurality of rectangular openings (14) corresponding to the positions of the rotating tables (4) on the platform plates (201) are formed in the side surface of the main box body (1). The horizontal width of the rectangular openings (14) is greater than the contour diameter of the rotating tables (4).

3. The robotic welding workstation for laser welding according to claim 2, characterized in that, When the platform plates (201) move horizontally, the bottom surface of the platform plates (201) contacts the top of the main box body (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).

4. The robotic welding workstation for laser welding according to claim 1, characterized in that, When multiple said platform plates (201) are in the initial state, a reserved spacing is provided between adjacent platform plates (201). A telescopic member (15) is fixedly arranged in the middle of the cross guide frame (7). The top of the telescopic member (15) is fixedly connected to 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 to a cross pressing frame (17). When the telescopic member (15) and the platform are both in the initial state, the cross pressing frame (17) is located between the platform plates (201), and the cross pressing frame (17) and multiple platforms form a planar structure.

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