Industrial robot flexible welding tooling

Abstract

The utility model belongs to the technical field of auxiliary welding equipment especially, a kind of industrial robot flexible welding tooling is provided.More specifically, the utility model discloses a kind of industrial robot flexible welding tooling, which is characterized by comprising plate, the top of plate is vertically provided with several clamping blocks for clamping workpiece, plate is provided with cylinder for horizontal movement of clamping block, the lower of plate is provided with box, the top of box is provided with mounting frame, which is upwardly open and has a "Fang" type structure, rotating mechanism is arranged in box to make mounting frame horizontally rotate;Plate is installed in mounting frame, and swing mechanism is arranged on mounting frame to make plate swing up and down along its length direction.The design can make the workpiece welded on the plate horizontally rotate and swing up and down by the up-and-down swing of the plate in the mounting frame and the horizontal rotation of the mounting frame, increase the adjustment range of the welded workpiece, thereby reduce the clamping frequency adjustment of special workpiece, facilitate the welding of workpiece needing multi-angle welding.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary welding equipment, and particularly relates to a flexible welding tool for industrial robots. Background Art

[0002] With the development of science and technology and the increase of industrial demand, industrial robots can replace humans to complete dangerous, heavy and complex work, improve work efficiency and quality, and serve human life. The use of industrial robots in the welding field is becoming more and more common, and they are becoming more and more important in the industrial field; and welding tools are indispensable auxiliary devices in the welding process.

[0003] Existing welding tools generally include a flat plate, and clamping blocks for clamping a workpiece are arranged on the flat plate. Generally, the clamping blocks are driven by an air cylinder or the like to move to clamp the workpiece. Existing flat plates can generally only rotate horizontally or swing up and down, which can complete welding of most workpieces. However, for some special workpieces, such as special-shaped pieces, irregular workpieces or workpieces that require multi-angle welding, due to the limited adjustment range, it is necessary to adjust the clamping position and direction of the workpiece multiple times during the welding process to meet different welding angles before the final welding can be completed, resulting in inconvenient welding. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a flexible welding tool for industrial robots to increase the adjustment range.

[0005] The flexible welding tool for industrial robots includes a flat plate, a plurality of clamping blocks for vertically clamping a workpiece are vertically arranged at the top of the flat plate, an air cylinder for horizontal movement of the clamping blocks is arranged on the flat plate, a box body is arranged below the flat plate, a mounting frame with an upward opening and a "匚"-shaped structure is arranged at the top of the box body, and a rotating mechanism for enabling the mounting frame to rotate horizontally is arranged in the box body; the flat plate is mounted in the mounting frame, and a swinging mechanism for enabling the flat plate to swing up and down is arranged on the mounting frame.

[0006] Furthermore, a plurality of vertically through first through holes are neatly arranged on the flat plate, a fixing block is correspondingly arranged for each air cylinder, and the air cylinder is mounted at the top of the fixing block; a fixing rod is vertically fixed at the bottom of the fixing block, the bottom end of the fixing rod can pass through the first through hole and be located at the bottom of the flat plate, an external thread is formed on the outer side wall of the bottom of the fixing rod, and a nut in threaded fit with the fixing rod is sleeved at the bottom of the fixing rod.

[0007] Furthermore, a limiting assembly for limiting the rotation of the fixing rod in the first through hole is arranged on the flat plate.

[0008] Furthermore, the limiting component includes a limiting block fixed to the side wall of the fixing rod, and a plurality of limiting grooves are evenly provided on the flat plate of the side wall of the first through hole for the limiting block to be inserted from top to bottom.

[0009] Furthermore, the clamping surfaces of the clamping blocks are all provided with protective pads.

[0010] Furthermore, the rotating mechanism includes a fixed shaft vertically fixed to the bottom of the mounting frame, a second through hole for the fixed shaft to pass through at the top of the housing, the bottom end of the fixed shaft passing through the second through hole and located inside the housing and connected to a first motor, and a first bearing installed between the fixed shaft and the second through hole.

[0011] Furthermore, the bottom of the mounting frame is equipped with several rollers that roll on the top of the housing.

[0012] Furthermore, three rollers are installed, and the three rollers are distributed circumferentially around a fixed axis.

[0013] Furthermore, the top of the housing is provided with a rolling groove for the insertion and circumferential rolling of a roller.

[0014] Furthermore, the swing mechanism includes a first rotating shaft and a second rotating shaft that are horizontally fixed on both sides of the plate. A mounting groove for inserting the second rotating shaft is provided on one side wall of the mounting frame, and a second bearing is provided between the second rotating shaft and the mounting groove. A third through hole is provided on the other side wall of the mounting frame for the first rotating shaft to pass through. One end of the first rotating shaft passes through the third through hole and is connected to the second motor. A third bearing is installed between the first rotating shaft and the third through hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention allows the workpiece to be welded on the plate to be adjusted by swinging the plate up and down within the mounting frame and by rotating the mounting frame horizontally. This increases the adjustment range of the workpiece and reduces the number of times special workpieces need to be clamped and adjusted, making it easier to weld workpieces that require multi-angle welding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged structural diagram at point A; Figure 3 for Figure 1 A top view of the structure of the medium-sized flat plate; Figure 4 for Figure 3 Enlarged structural diagram at point B; Figure 5 for Figure 1 is a schematic front structural view; Names of components in the figure: 1. Box body; 2. Fixed shaft; 3. Mounting frame; 4. First rotating shaft; 5. Fixed block; 6. Air cylinder; 7. Clamping block; 8. Flat plate; 8.1. First through hole; 8.2. Limiting groove; 9. Second rotating shaft; 10. Roller; 11. Fixed rod; 12. Nut; 13. Limiting block. DETAILED DESCRIPTION OF EMBODIMENTS

[0017] The present utility model is further illustrated below through specific embodiments with reference to the accompanying drawings, but it is not intended to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

[0018] A flexible welding fixture for an industrial robot described in this embodiment, as Figures 1 to 5 illustrated, comprises a flat plate 8, wherein a plurality of clamping blocks 7 for clamping a workpiece are vertically arranged at the top of the flat plate 8; the clamping blocks 7 are vertically arranged, and the workpiece is clamped by fitting the clamping blocks 7 with the workpiece; an air cylinder 6 for enabling the clamping blocks 7 to move horizontally is arranged on the flat plate 8, and the structure of the flat plate 8, the air cylinder 6 and the clamping blocks 7 is a structure of an existing welding fixture for industrial robots.

[0019] A protective pad is arranged on the clamping surface of each clamping block 7; the clamping surface of the clamping block 7 is a side away from the air cylinder 6, that is, a surface of the clamping block 7 in contact with the workpiece; the protective pad is made of rubber; the protective pad can prevent the clamping block 7 from directly contacting the surface of the welded workpiece, and reduce indentation and other marks on the workpiece caused by the clamping block 7.

[0020] A box body 1 is arranged below the flat plate 8; the box body 1 is of a rectangular structure; a mounting frame 3 which has an upward opening and is in a C-shaped structure is arranged at the top of the box body 1; the mounting frame 3 comprises a horizontal plate, side plates are vertically and fixedly arranged at the tops of two ends of the plate, and the horizontal plate and the side plates integrally form the mounting frame 3 which has an upward opening and is in the C-shaped structure; the flat plate 8 is mounted in the mounting frame 3, and the flat plate 8 can horizontally rotate by horizontally rotating the mounting frame 3.

[0021] The plate 8 is a rectangular block with several vertically connected first through holes 8.1 neatly arranged on it. The first through holes 8.1 are distributed in a rectangular shape. A fixing block 5 is provided for each cylinder 6. The fixing block 5 is also rectangular. The cylinder 6 is mounted on top of the fixing block 5. A mounting seat is installed on the side wall of the cylinder barrel of the cylinder 6. The mounting seat can be fixed to the fixing block 5 by screws and nuts. Four screws are provided, vertically fixed at the four corners of the top of the fixing block 5. The mounting seat has through holes for the screws to pass through. The mounting seat is located between the nut and the fixing block 5. Alternatively, the mounting seat can be welded to the top of the fixing block 5. A fixing rod 11 is vertically fixed to the bottom of the fixing block 5. The diameter of the fixing rod 11 is the same as the diameter of the first through hole 8.1. The bottom end of the rod 11 can pass through the first through hole 8.1 and be located at the bottom of the plate 8. The outer side wall of the bottom of the fixing rod 11 is provided with external threads. The bottom of the fixing rod 11 is fitted with a nut 12 that is threadedly engaged with it. Through the threaded engagement between the nut 12 and the fixing rod 11, the nut 12 can be screwed upward, so that the nut 12 and the fixing block 5 are tightly attached to the plate 8, thereby fixing the fixing block 5 to the top of the plate 8 and fixing the cylinder 6 and the clamping block 7 to the top of the plate 8. According to the size and shape of the workpiece, the position of the cylinder 6 and the clamping block 7 can be adjusted by inserting the fixing rod 11 into the first through hole 8.1 at different positions. And by the different directions of the fixing rod 11 in the first through hole 8.1, the angle of the cylinder 6 and the clamping block 7 can be adjusted.

[0022] A limiting block 13 is fixed to the side wall of the fixing rod 11. The height of the limiting block 13 is less than the thickness of the plate 8. External threads are provided on the outer side wall of the fixing rod 11 below the limiting block 13. Several limiting grooves 8.2 are evenly provided on the plate 8 on the side wall of the first through hole 8.1 for the limiting block 13 to be inserted from top to bottom. The limiting grooves 8.2 are evenly distributed around the first through hole 8.1. When the limiting block 13 is inserted into the limiting groove 8.2, the rotation of the fixing rod 11 in the first through hole 8.1 is restricted, thereby preventing excessive clamping of the workpiece. During the process, the angle of the clamping block 7 shifts. By inserting the limiting block 13 into the limiting grooves 8.2 at different positions, the angle between the cylinder 6 and the clamping block 7 can be limited. In some embodiments, a limiting rod can be vertically fixed at the bottom of the fixing block 5, and slots for inserting the limiting rod can be evenly opened on the top of the plate 8 with the first through hole 8.1 as the center. The slots and the first through hole 8.1 are independent of each other. By inserting the limiting rod into the slot, the rotation of the fixing rod 11 within the first through hole 8.1 can also be limited. This section constitutes a limiting component for limiting the rotation of the fixing rod 11 within the first through hole 8.1.

[0023] A fixed shaft 2 is vertically fixed at the bottom of the mounting frame 3. A second through hole for the fixed shaft 2 to pass through is opened at the top of the housing 1. The bottom end of the fixed shaft 2 passes through the second through hole and is located inside the housing 1 and connected to a first motor. The first motor is connected to the fixed shaft 2 through a coupling. Heat dissipation holes are opened on the side wall of the housing 1. A first bearing is installed between the fixed shaft 2 and the second through hole. The inner ring of the first bearing is fixedly sleeved on the fixed shaft 2, and the outer ring of the first bearing is fixed to the first through hole. The fixing direction of the first bearing can be achieved by existing fixing methods such as pins, or by welding the bearing to the fixed shaft 2 and the first through hole on the housing 1. The first motor drives the fixed shaft 2 to rotate, thereby rotating the fixed shaft 2. In some embodiments, a first gear can also be horizontally fixed at the bottom of the fixed shaft 2 inside the housing 1. A second gear meshing with the first gear is provided inside the housing 1. The first motor is installed at the bottom of the second gear. The first motor drives the second gear to engage, and the second gear drives the first gear to rotate, thereby rotating the fixed shaft 2. Through the cooperation of the first gear and the second gear, the speed ratio between the first motor and the mounting frame 3 can be adjusted. This section describes the rotation mechanism that enables the mounting frame 3 to rotate horizontally.

[0024] The bottom of the mounting frame 3 is equipped with several rollers 10 that roll on the top of the housing 1. The rollers 10 are omnidirectional wheels, which can support the mounting frame 3 and reduce the load on the fixed shaft 2.

[0025] There are three rollers 10 installed, and the three rollers 10 are distributed in a circle around the fixed shaft 2. The support effect of the three rollers 10 is relatively stable.

[0026] The top of the housing 1 is provided with a rolling groove for the roller 10 to be inserted and roll in a circular motion. The distance between the roller 10 and the fixed shaft 2 is consistent. The rolling groove is a circular structure. The rolling groove can restrict the rolling path of the roller 10.

[0027] The two sides of the plate 8 are respectively fixed with a first rotating shaft 4 and a second rotating shaft 9. A mounting groove for inserting the second rotating shaft 9 is provided on one side wall of the mounting frame 3. The mounting groove is circular, and a second bearing is provided between the second rotating shaft 9 and the mounting groove. A third through hole is provided on the other side wall of the mounting frame 3 for the first rotating shaft 4 to pass through. One end of the first rotating shaft 4 passes through the third through hole and is connected to a second motor. The second motor is mounted on a mounting block, which is horizontally fixed to the outer side wall of the mounting frame 3. The second motor is connected to the first rotating shaft 4 via a coupling. A third bearing is installed between the first rotating shaft 4 and the third through hole. The second motor drives the first rotating shaft 4... When shaft 4 rotates, the first rotating shaft 4 drives the plate 8 to rotate, causing the plate 8 to swing up and down. In some embodiments, a second motor can also be installed at the inner bottom of the mounting frame 3. The end of the first rotating shaft 4 extends beyond the mounting frame 3 and is fixed with a first pulley. A fourth through hole is opened on the side wall of the mounting frame 3 below the first rotating shaft 4, through which the rotating shaft of the second motor passes. A second pulley is fixed to the rotating shaft of the second motor through the fourth through hole. The first pulley is connected to the second pulley via a belt. The rotation of the second motor drives the second pulley to rotate, and then drives the first pulley to rotate via the belt. The first pulley drives the first rotating shaft 4 and the plate 8 to rotate. This section constitutes a swinging mechanism that causes the plate 8 to swing up and down.

[0028] The working principle and technical effects of this embodiment: In use, the positions of cylinder 6 and clamping block 7 on the top of plate 8 are adjusted according to the shape and size of the workpiece. After the fixing rod 11 is passed through the corresponding first through hole 8.1, the nut 12 is screwed in from the bottom end of the fixing rod 11, so that the nut 12 and the fixing block 5 are tightly attached to plate 8, thereby fixing cylinder 6 and clamping block 7 to the top of plate 8. At the same time, by inserting the limiting block 13 into the limiting groove, the fixing rod 11 can be prevented from rotating in the first through hole 8.1, thereby preventing cylinder 6 and clamping block 7 from rotating horizontally and increasing the fixing effect of cylinder 6 and plate 8. By inserting the limiting block 13 into the limiting groove 8.2 at different angles, the angle of cylinder 6 and clamping block 7 on the top of plate 8 can be adjusted. The workpiece to be clamped is then placed between the clamping blocks 7, and the clamping blocks 7 are moved by the cylinder 6 to make them fit tightly against the workpiece, thus clamping the workpiece. During the welding process, the first motor in the housing 1 drives the fixed shaft 2 to rotate, which in turn drives the mounting frame 3 to rotate horizontally. This causes the mounting frame 3 to rotate the plate 8 horizontally, thereby rotating the workpiece on top of the plate 8. At the same time, the second motor drives the first rotating shaft 4 to rotate, allowing the plate 8 to swing up and down. By rotating the workpiece clamped on top of the plate 8 horizontally and swinging it up and down, the adjustment range of the workpiece is increased, allowing for multi-angle welding and reducing the number of times the workpiece needs to be clamped.

Claims

1. A flexible welding fixture for an industrial robot, comprising a plate (8), wherein a plurality of clamping blocks (7) for clamping workpieces are vertically arranged on the top of the plate (8), and a cylinder (6) for horizontal movement of the clamping blocks (7) is provided on the plate (8), characterized in that: A box body (1) is arranged below the flat plate (8), the top of the box body (1) is provided with a mounting frame (3) with an upward opening and a "匚"-shaped structure, and a rotating mechanism for enabling the mounting frame (3) to perform horizontal rotation is arranged in the box body (1); The flat plate (8) is installed in the mounting frame (3), and the mounting frame (3) is provided with a swinging mechanism for enabling the flat plate (8) to swing up and down.

2. The flexible welding fixture for industrial robots according to claim 1, characterized in that: A plurality of first through holes (8.1) communicating vertically are neatly arranged on the flat plate (8), corresponding air cylinders (6) are each provided with a fixing block (5), and the air cylinders (6) are installed on the top of the fixing blocks (5); A fixing rod (11) is vertically fixed at the bottom of the fixing block (5), the bottom end of the fixing rod (11) can pass through the first through hole (8.1) and be located at the bottom of the flat plate (8), an external thread is provided on the outer side wall of the bottom of the fixing rod (11), and a nut (12) in threaded fit with the fixing rod (11) is sleeved at the bottom of the fixing rod (11).

3. The flexible welding fixture for industrial robots according to claim 2, characterized in that: A limiting component for limiting the rotation of the fixing rod (11) in the first through hole (8.1) is arranged on the flat plate (8).

4. The flexible welding fixture for industrial robots according to claim 3, characterized in that: The limiting component comprises a limiting block (13) fixed on the side wall of the fixing rod (11), and a plurality of limiting grooves (8.2) for the limiting block (13) to insert from top to bottom are uniformly formed in the flat plate (8) on the side wall of the first through hole (8.1).

5. The flexible welding fixture for industrial robots according to claim 4, characterized in that: A protective pad is arranged on each clamping surface of the clamping blocks (7).

6. The flexible welding fixture for industrial robots according to claim 1 or 5, characterized in that: The rotating mechanism comprises a fixing shaft (2) vertically fixed at the bottom of the mounting frame (3), a second through hole for the fixing shaft (2) to pass through is formed at the top of the box body (1), the bottom end of the fixing shaft (2) passes through the second through hole to be located in the box body (1) and is connected with a first motor, and a first bearing is installed between the fixing shaft (2) and the second through hole.

7. The flexible welding fixture for industrial robots according to claim 6, characterized in that: A plurality of rollers (10) rolling on the top of the box body (1) are installed at the bottom of the mounting frame (3).

8. The flexible welding fixture for industrial robots according to claim 7, characterized in that: There are three rollers (10), and the three rollers (10) are circumferentially distributed with the fixing shaft (2) as the center.

9. The flexible welding fixture for industrial robots according to claim 8, characterized in that: A rolling groove for the rollers (10) to insert into and roll circumferentially is formed at the top of the box body (1).

10. The flexible welding fixture for industrial robots according to claim 9, characterized in that: The swinging mechanism comprises a first rotating shaft (4) and a second rotating shaft (9) horizontally fixed on two sides of the flat plate (8), an installation groove for the second rotating shaft (9) to insert into is formed in one side wall of the mounting frame (3), and a second bearing is arranged between the second rotating shaft (9) and the installation groove; A third through hole for the first rotating shaft (4) to pass through is formed in the other side wall of the mounting frame (3), one end of the first rotating shaft (4) passes through the third through hole and is connected with a second motor, and a third bearing is installed between the first rotating shaft (4) and the third through hole.

Images