Multi-angle rotating clamping device for robot welding

Abstract

The utility model relates to industrial automation welding equipment field especially, and more particularly to a kind of multi-angle rotating clamping device for robot welding, including welding robot and rack etc., rack top has several grooves, rack is slidably connected with moving plate by groove, moving plate top surface is connected with support column, several clamping slots are opened around support column side surface, clamping disc is rotatably connected on support column upper portion, guiding rod is slidably connected with the side plate of clamping disc, the end of guiding rod towards support column is connected with clamping block, first reset spring is set on guiding rod, clamping block and clamping slot are elastically positioned by first reset spring. Through the linkage design of compression ring and guiding rod, clamping block is elastically clamped with clamping slot under the action of first reset spring, to realize the accurate adjustment of clamping disc angle and phased positioning function, to complete the purpose of workpiece full-position welding in single clamping, avoid the repeated disassembly caused by angle limitation.

Description

Technical Field

[0001] This utility model relates to the field of industrial automated welding equipment, and in particular to a multi-angle rotating clamping device for robot welding. Background Technology

[0002] Welding, as a core process in modern manufacturing, is widely used in the automotive, aerospace, and shipbuilding industries. With the development of industrial automation, automated welding technology is gradually replacing traditional manual welding, significantly improving welding efficiency, precision, and consistency through programmed control. Automated welding systems typically consist of a welding power source, a wire feeding mechanism, and an execution terminal, enabling stable continuous weld seams and reducing the intensity of manual operation and quality fluctuations.

[0003] Currently, most mainstream welding robots employ multi-joint robotic arm structures, and their working mode relies on preset programs to perform welding tasks at fixed workstations. While the welding torch at the end of the robotic arm possesses flexible spatial posture adjustment capabilities, the robot body is typically fixed in a specific position. This is because requiring the robot to move during the welding process necessitates ensuring millimeter-level precision in coordinating its trajectory with the weld point's pose, placing extremely high demands on the control system, positioning sensors, and ground flatness, making practical implementation difficult and significantly increasing costs. Therefore, existing technological solutions generally limit the robot to a static working state.

[0004] Because the robotic arm cannot move freely during operation, its effective welding range is strictly limited to the arm's reach radius in a fixed position. When dealing with large or complex workpieces, a single clamping operation can only cover a localized welding area. To complete welds in other areas of the workpiece, the operation must be interrupted, the workpiece disassembled, and the clamping posture readjusted, sometimes requiring multiple transfers to different workstations. This process significantly increases non-welding time, leading to decreased production efficiency, and repeated clamping can introduce positioning errors, affecting the consistency of the final weld quality. Utility Model Content

[0005] To overcome the drawbacks of repetitive clamping, this invention provides a multi-angle rotating clamping device for robotic welding, aiming to solve the aforementioned shortcomings.

[0006] A multi-angle rotating clamping device for robotic welding includes a welding robot and a placement frame. The placement frame is fixedly installed adjacent to the welding robot. The top of the placement frame has several sliding grooves. A movable plate is slidably connected to the placement frame through the sliding grooves. The bottom of the movable plate is provided with an anti-detachment "convex" shaped long plate that inserts into the placement frame. A support column is connected to the top surface of the movable plate. Several slots are formed around the side of the support column. A clamping disc for clamping workpieces is rotatably connected to the upper part of the support column. A guide rod is slidably connected to the side plate of the clamping disc. A locking block is connected to one end of the rod facing the support column. A first return spring is sleeved on the guide rod. One end of the first return spring is connected to the clamping plate, and the other end is connected to the locking block. The locking block is elastically positioned and connected to the slot. A pressure ring is slidably connected to the outer ring of the clamping plate. A second return spring is provided on the top surface of the moving plate, surrounding the support column. The top end of the second return spring is connected to the pressure ring, and the bottom end is connected to the top surface of the moving plate. The guide rod passes through the clamping plate and contacts the inner wall of the pressure ring. The moving plate is provided with a fixed assembly for stable connection.

[0007] Optionally, the fixing assembly includes a pressing rod, grooves at both ends of the "convex" shaped elongated plate at the bottom of the movable plate, a docking piece connected to the top surface of the movable plate, the pressing rod being slidably connected to the movable plate, a contact plate being connected to the bottom of the pressing rod, the contact plate being slidably connected to the groove, and the top surface of the contact plate passing through the top surface of the middle of the "convex" shaped elongated plate and contacting the placement frame, an operating rod being connected to the top of the pressing rod, the operating rod being slidably connected to the docking piece, and a locking rod being connected to the side of the operating rod, the locking rod engaging with the docking piece.

[0008] Optionally, a pull ring is connected to the top of the operating lever.

[0009] Optionally, the top surface of the operating rod extending from the side of the pressure ring is connected to an anti-slip pad.

[0010] Optionally, the movable plate is provided with a telescopic pad surrounding the second reset spring, one end of the telescopic pad being connected to the pressure ring and the other end being connected to the movable plate.

[0011] Optionally, an auxiliary ring is connected to the top outer ring of the clamping disk.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Through the linkage design of the pressure ring and the guide rod, the clamping block is elastically engaged with the slot under the action of the first reset spring, thereby realizing the precise adjustment of the clamping plate angle and the staged positioning function, so as to achieve the purpose of completing the welding of the workpiece in all positions with a single clamping, avoiding repeated disassembly and assembly due to angle limitations.

[0014] 2. Through the linkage design of the pull ring and the operating rod, the moving plate and the placement frame form a sliding-fixed fit; combined with the guiding fit of the "convex" shaped long plate and the slide groove, the position of the moving plate can be flexibly adjusted and reliably fixed, ultimately achieving the goal of optimizing the relative distance between the workpiece and the welding robot. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view showing the connection relationship between the card block and the guide rod of this utility model.

[0017] Figure 3 This is a cross-sectional view showing the connection relationship between the docking component and the locking rod of this utility model.

[0018] The markings in the attached diagram are as follows: 1: Welding robot, 2: Placement frame, 3: Slide, 31: Moving plate, 4: Support column, 5: Slot, 6: Locking block, 7: Guide rod, 8: First return spring, 9: Clamping plate, 10: Pressure ring, 101: Second return spring, 11: Extrusion rod, 111: Contact plate, 12: Connecting part, 13: Operating rod, 131: Locking rod, 14: Pull ring, 15: Anti-slip pad, 16: Telescopic pad, 17: Auxiliary ring. Detailed Implementation

[0019] The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0020] Example: A multi-angle rotating clamping device for robotic welding, such as... Figures 1-3As shown, the assembly includes a welding robot 1, a placement frame 2, a movable plate 31, a support column 4, a clamping block 6, a guide rod 7, a first return spring 8, a clamping plate 9, a pressure ring 10, a second return spring 101, and a fixing assembly. The placement frame 2 is fixedly installed adjacent to the welding robot 1. The top of the placement frame 2 has several sliding grooves 3, and the movable plate 31 is slidably connected to the placement frame 2 through the sliding grooves 3. The bottom of the movable plate 31 is provided with an anti-detachment "convex" shaped long plate that inserts into the sliding grooves 3 of the placement frame 2. The top surface of the movable plate 31 is connected to the support column 4, and the side of the support column 4 has seventy-two clamping slots 5, with an included angle of 5° between every two clamping slots 5. The upper part of the support column 4 is rotatably connected to a clamping device for holding the workpiece. The clamping plate 9 has two guide rods slidably connected to its side plate. The two guide rods 7 are connected to a locking block 6 at one end facing the support column 4. A first return spring 8 is sleeved on the guide rod 7. One end of the first return spring 8 is connected to the clamping plate 9, and the other end is connected to the locking block 6. The locking block 6 is elastically positioned and connected to the locking groove 5. A pressure ring 10 is slidably connected to the outer ring of the clamping plate 9. A second return spring 101 is provided on the top surface of the moving plate 31, which surrounds the support column 4. The top end of the second return spring 101 is connected to the pressure ring 10, and the bottom end is connected to the top surface of the moving plate 31. The guide rods 7 pass through the clamping plate 9 and contact the inner wall of the pressure ring 10. The moving plate 31 is provided with a fixed component for stable connection.

[0021] like Figure 1 and Figure 3 As shown, the fixing assembly includes a pressing rod 11, a contact plate 111, a docking piece 12, an operating rod 13, and a locking rod 131. The bottom of the moving plate 31 has grooves at both ends of a "convex"-shaped long plate. The top surface of the moving plate 31 is connected to the docking piece 12. The pressing rod 11 is slidably connected to the moving plate 31. The bottom of the pressing rod 11 is connected to the contact plate 111, which is slidably connected to the groove. The top surface of the contact plate 111 passes through the top surface of the "convex"-shaped long plate and contacts the placement frame 2. The top of the pressing rod 11 is connected to the operating rod 13, which is slidably connected to the docking piece 12. The side of the operating rod 13 is connected to a horizontally arranged locking rod 131, which restricts the fit between the locking rod 131 and the docking piece 12. The docking piece 12 has symmetrical grooves in the middle. The locking rod 131 is slidably connected to the top surface of the docking piece 12 and the groove. The length of the locking rod 131 is greater than the thickness of the wall of the docking piece 12.

[0022] like Figure 3 As shown, it also includes a pull ring 14. The top of the operating lever 13 is connected to the pull ring 14, so that the lifting, rotating unlocking and locking actions of the moving plate 31 can be completed by holding the pull ring 14.

[0023] like Figure 2 As shown, it also includes an anti-slip pad 15, and the top surface of the operating rod 13 extending from the side of the pressure ring 10 is connected to the anti-slip pad 15.

[0024] like Figure 1As shown, it also includes a telescopic pad 16. The movable plate 31 is provided with a telescopic pad 16 surrounding the second reset spring 101. One end of the telescopic pad 16 is connected to the pressure ring 10, and the other end is connected to the movable plate 31.

[0025] like Figure 1 As shown, it also includes an auxiliary ring 17. The outer ring of the top of the clamping disk 9 is connected to the auxiliary ring 17. The radius of the auxiliary ring 17 is larger than that of the clamping disk 9, and the larger radius design can amplify the rotational torque.

[0026] The worker places the workpiece to be welded on the surface of the clamping plate 9. After initial fixation by the clamping mechanism built into the clamping plate 9, the welding robot 1 is started to perform welding according to the preset program. If it is necessary to adjust the initial welding angle to ensure that the robot welding torch effectively covers the entire welding area of ​​the workpiece, the worker presses the edge of the pressure ring 10 with their finger. The anti-slip pad 15 is compressed and undergoes elastic deformation, providing flexible cushioning. After being compressed, the pressure ring 10 slides downward along the outer ring of the clamping plate 9, simultaneously compressing the second return spring 101 and the telescopic pad 16. At this time, the inner wall of the pressure ring 10 disengages from the end of the guide rod 7, releasing the axial restriction on the guide rod 7. Subsequently, the worker applies rotational force by holding the auxiliary ring 17, causing the clamping plate 9 to rotate around the axis of the support column 4.

[0027] When the clamping disc 9 rotates, the locking blocks 6, under the elastic force of the first return spring 8, sequentially disengage from the slots 5 on the side of the support column 4, and re-engage as the clamping disc 9 rotates to the next slot 5 position, achieving phased positioning of the angle; the guide rod 7 slides back and forth within the side plate of the clamping disc 9 as the locking blocks 6 move, continuously maintaining elastic contact between the locking blocks 6 and the slots 5. Seventy-two slots 5 are evenly distributed on the surface of the support column 4, and the angle of the clamping disc 9 can be precisely adjusted by controlling the number of rotations.

[0028] After the angle adjustment is completed, the operator releases the pressure ring 10. The second return spring 101 restores its deformation, pushing the pressure ring 10 to slide upwards along the outer ring of the clamping plate 9 to reset. Simultaneously, the telescopic pad 16 stretches and wraps around the second return spring 101, preventing welding spatter or external foreign objects from interfering with the spring's stroke. After the pressure ring 10 rises to its limit position, its inner wall re-contacts the end of the guide rod 7, restricting the axial movement of the guide rod 7, thereby fixing the current angle of the clamping plate 9. At this point, the workpiece can be welded in all positions without disassembly, effectively avoiding positioning deviations caused by repeated clamping.

[0029] If the welding positions are widely distributed or the distance between the workpiece and the welding robot 1 needs to be adjusted, and the position of the moving plate 31 on the placement frame 2 needs to be adjusted, the operator holds the pull ring 14 and rotates it, causing the operating rod 13 to rotate inside the docking part 12. The locking rod 131 rotates synchronously with the operating rod 13. When the locking rod 131 rotates to the top of the groove opened in the docking part 12, the operating rod 13 and the pressing rod 11 slide downward under their own weight. The contact plate 111 moves downward along the groove of the "convex" long plate at the bottom of the moving plate 31, gradually disengaging from the pressing contact with the surface of the placement frame 2, thus releasing the friction lock between the moving plate 31 and the placement frame 2.

[0030] Subsequently, the moving plate 31 is pushed, and it slides along the groove 3 on the top surface of the placement frame 2 via the bottom "convex" shaped long plate. After adjusting to the target position, the pull ring 14 is pulled upward to make the clamping rod 131 slide out of the groove on the top surface of the docking part 12 and slide along the transition curved surface until it is in complete contact with the top surface of the docking part 12. At this time, the pressing rod 11 slides upward and drives the contact plate 111 to fit against the placement frame 2. The contact plate 111 and the clamping rod 131 press against the placement frame 2 and the moving plate 31, generating sufficient friction by increasing the contact pressure, thus fixing the moving plate 31 in the adjusted position. After the position is adjusted, the relative distance between the welding robot 1 and the workpiece is optimized, and its welding torch movement trajectory can cover the entire welding position, avoiding welding blind spots caused by stroke limitations. At the same time, the center point of the workpiece remains unchanged, further reducing the risk of positioning errors caused by repeated clamping.

[0031] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A multi-angle rotating clamping device for robotic welding, characterized in that: The assembly includes a welding robot (1) and a placement rack (2). The placement rack (2) is fixedly installed adjacent to the welding robot (1). The top of the placement rack (2) has several sliding grooves (3). The placement rack (2) is slidably connected to a moving plate (31) through the sliding grooves (3). The bottom of the moving plate (31) is provided with an anti-detachment "convex" shaped long plate that inserts into the placement rack (2). The top surface of the moving plate (31) is connected to a support column (4). The side of the support column (4) has several slots (5). The upper part of the support column (4) is rotatably connected to a clamping plate (9) for clamping workpieces. The side plate of the clamping plate (9) is slidably connected to a guide rod (7). The end of the guide rod (7) facing the support column (4) is connected to... There is a locking block (6), and a first return spring (8) is sleeved on the guide rod (7). One end of the first return spring (8) is connected to the clamping plate (9), and the other end is connected to the locking block (6). The locking block (6) is elastically positioned and connected to the slot (5). A pressure ring (10) is slidably connected to the outer ring of the clamping plate (9). A second return spring (101) surrounding the support column (4) is provided on the top surface of the moving plate (31). The top end of the second return spring (101) is connected to the pressure ring (10), and the bottom end is connected to the top surface of the moving plate (31). The guide rod (7) passes through the clamping plate (9) and contacts the inner wall of the pressure ring (10). The moving plate (31) is provided with a fixed component that is securely connected.

2. The multi-angle rotating clamping device for robot welding according to claim 1, characterized in that: The fixing assembly includes a pressing rod (11), the bottom of the moving plate (31) has grooves at both ends of a "convex" shaped long plate, the top surface of the moving plate (31) is connected to a docking piece (12), the pressing rod (11) is slidably connected to the moving plate (31), the bottom of the pressing rod (11) is connected to a contact plate (111), the contact plate (111) is slidably connected to the groove, and the top surface of the contact plate (111) passes through the top surface of the middle of the "convex" shaped long plate and contacts the placement frame (2), the top of the pressing rod (11) is connected to an operating rod (13), the operating rod (13) is slidably connected to the docking piece (12), the side of the operating rod (13) is connected to a locking rod (131), and the locking rod (131) and the docking piece (12) are mutually restrictive.

3. A multi-angle rotating clamping device for robotic welding according to claim 2, characterized in that: A pull ring (14) is connected to the top of the operating lever (13).

4. A multi-angle rotating clamping device for robot welding according to claim 3, characterized in that: The top surface of the operating rod (13) extending from the side of the pressure ring (10) is connected to an anti-slip pad (15).

5. A multi-angle rotating clamping device for robotic welding according to claim 1, characterized in that: The movable plate (31) is provided with a telescopic pad (16) surrounding the second reset spring (101). One end of the telescopic pad (16) is connected to the pressure ring (10), and the other end is connected to the movable plate (31).

6. A multi-angle rotating clamping device for robotic welding according to claim 1, characterized in that: An auxiliary ring (17) is connected to the top outer ring of the clamping disk (9).

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