A robot welding assembly line workpiece turnover mechanism

Abstract

The utility model discloses a kind of robot welding assembly line workpiece turnover mechanism, including moving plate, cylinder A and L type rotating seat;Moving plate is arranged in the side of robot welding assembly line, and the output end of cylinder A is connected in the side of moving plate, the output end of cylinder A drives moving plate to move in the side of robot welding assembly line;The utility model realizes automation operation by cylinder A, cylinder B and cylinder C, from moving plate close to workpiece, fixture clamps workpiece, to driving mechanism drives workpiece overturn, reset after operation is completed, all do not need manual intervention, improve operation safety;Through the transmission ratio precision conversion overturn angle of gear plate and gear, realize workpiece 0-180 ° range rotation, high-precision control can ensure that workpiece welding surface is always in the best welding position of robot;Through moving plate moves along preset guide rail, ensure that the initial alignment accuracy of fixture and workpiece;Through protective cover effectively blocks welding splashing, dust and other sundries into driving mechanism.

Description

Technical Field

[0001] This utility model relates to the field of robotic welding production line technology, specifically a workpiece flipping mechanism for robotic welding production line. Background Technology

[0002] In modern manufacturing, robotic welding production lines have been widely used in automobile manufacturing, construction machinery, and steel structure processing due to their advantages such as high welding efficiency, stable weld quality, and low labor intensity. During the welding process, workpieces often require multi-sided welding (such as the edges of box-type workpieces and double-sided welds of flange-type workpieces). Therefore, a flipping mechanism is needed to adjust the workpiece's posture so that the part to be welded is precisely aligned with the robotic welding torch, ensuring continuous completion of the welding operation.

[0003] Currently, some small and medium-sized robotic welding production lines still use a semi-automated method of "manual assisted positioning + manual crank-driven rotation": the operator needs to first visually adjust the workpiece to the approximate position, and then manually turn the crank to drive the workpiece to rotate to the target angle through the lead screw transmission.

[0004] In existing technologies, workpiece flipping largely relies on manual assistance or semi-automated operation modes, which not only suffers from significant efficiency and accuracy deficiencies but also poses safety hazards. Regarding operational efficiency, manual involvement in the entire process of workpiece positioning, flipping, and calibration is time-consuming per instance, and the operational rhythm is greatly affected by the operator's condition, easily causing stagnation in robotic welding production lines and failing to meet the demands of continuous production. Furthermore, manually flipping heavy workpieces is extremely labor-intensive, requiring multiple people to work together. In terms of accuracy control, traditional flipping methods often rely on manual cranks or lead screw drives, with the flipping angle entirely dependent on the operator's experience and judgment, resulting in generally large errors. This makes it difficult to accurately align the workpiece welding surface with the welding torch, easily leading to quality problems such as weld misalignment and incomplete welds. Moreover, during mass production, the workpiece posture consistency is poor, resulting in significant product quality fluctuations. In addition, close-range manual involvement in flipping operations at the welding station also exposes workers to safety risks such as high-temperature welding slag, arc radiation, and workpiece slippage, making it difficult to guarantee operational safety.

[0005] In view of this, we have introduced a workpiece flipping mechanism for robotic welding production lines. Utility Model Content

[0006] The purpose of this invention is to provide a workpiece flipping mechanism for a robotic welding production line to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a workpiece flipping mechanism for a robotic welding production line, comprising: a moving plate, a cylinder A, and an L-shaped rotating seat; The movable plate is set on the side of the robot welding production line, and the output end of cylinder A is connected to the side of the movable plate. The output end of cylinder A drives the movable plate to move on the side of the robot welding production line so as to move closer to or away from it. The L-shaped rotating seat is rotatably connected to the surface of the moving plate. The top of the L-shaped rotating seat is connected to the cylinder B by bolts. The side of the L-shaped rotating seat is connected to the rotating rod. The output end of the cylinder B is equipped with a clamp. The surface of the moving plate is equipped with a driving mechanism. The cylinder C, toothed plate, gear and rotating rod of the driving mechanism are rotated. The fixture holds the workpiece of the robot welding production line so that the output end of the cylinder C drives the toothed plate to move. The toothed plate meshes with the gear, thereby driving the gear, rotating rod, L-shaped rotating seat, cylinder B and fixture to rotate, and thus flipping the workpiece to different angles.

[0008] Preferably, the driving mechanism includes a T-shaped block connected to the side of the toothed plate. The T-shaped block enhances the stability of the connection between the cylinder C and the toothed plate, preventing it from falling off during power transmission. The cylinder C is firmly connected to the surface of the moving plate by bolts, ensuring that its position does not shift during driving. The toothed plate is slidably mounted on the surface of the moving plate and can move along a preset trajectory. The output end of the cylinder C is fixedly connected to the T-shaped block, and the toothed plate moves synchronously by pushing the T-shaped block. The gear is fixedly connected to the surface of the rotating rod, and the gear and the toothed plate maintain precise meshing, ensuring efficient power conversion and transmission to the rotating rod.

[0009] Preferably, a limiting block is fixedly connected to the surface of the movable plate, and a limiting groove for sliding contact with the limiting block is correspondingly provided on the surface of the toothed plate; the sliding cooperation between the limiting block and the limiting groove can strictly limit the moving direction of the toothed plate, prevent the toothed plate from shifting left or right or tilting during the movement, ensure that the toothed plate and the gear always maintain a good meshing state, and avoid drive failure or component damage due to meshing misalignment.

[0010] Preferably, a fixing block is fixedly connected to the side of the limiting block on the surface of the movable plate, and the fixing block provides stable mounting support for the position sensor; a position sensor is provided on one side of the fixing block, which can monitor the moving distance of the toothed plate in real time, and then calculate the actual flipping angle of the workpiece through the transmission ratio of the toothed plate and the gear. When the preset welding angle is reached, the sensor can send a signal to control the cylinder C to stop the action, so as to achieve precise control of the flipping angle.

[0011] Preferably, the surface of the movable plate is connected to a fixed seat for supporting the rotating rod. The fixed seat can provide radial support for the rotating rod and prevent the rotating rod from bending due to force or its own weight. The rotating rod passes through the fixed seat, and its surface is provided with a bearing A inside the fixed seat. The bearing A can convert the sliding friction between the rotating rod and the fixed seat into rolling friction, which can greatly reduce the rotational resistance, reduce component wear, and ensure the smooth rotation of the rotating rod.

[0012] Preferably, the output end of the cylinder B is connected to a support block; the support block serves as a transition connector, with one end fixed to the output end of the cylinder B and the other end connected to the clamp. This arrangement can expand the contact area between the cylinder output end and the clamp, allowing the driving force of the cylinder B to be transmitted to the clamp more evenly, while also enhancing the structural strength of the connection between the two and preventing the clamp from being damaged due to concentrated force.

[0013] Preferably, the clamp includes a concave frame, which provides an installation framework for the various components of the clamp; a connecting arm A is connected inside the concave frame via a rotating structure, and the connecting arm A is the core transmission component for the clamping action; connecting arms B are hinged to both the upper and lower ends of one end of the connecting arm A, for transmitting driving force to the clamping structures on both sides; a connecting block is hinged to the inner side of the connecting arm B, and one end of the connecting block is fixedly connected to a guide rod. The guide rod passes through the concave frame and is detachably connected to a support block. The forward and backward movement of the guide rod drives the connecting block, connecting arm B, and connecting arm A to move together, thereby realizing the opening and closing of the clamp; this detachable connection method facilitates the disassembly, inspection, and replacement of the clamp.

[0014] Preferably, a first pin connects the concave frame to the connecting arm A, a second pin connects the connecting arm A to the connecting arm B, and a third pin connects the connecting block to the connecting arm B. The pin connections ensure that the components can rotate flexibly, guaranteeing the smoothness of the clamping action. A clamping plate is connected to the inner side of the connecting arm A. The clamping plate directly contacts the workpiece, and its surface can be designed with anti-slip textures or adaptable grooves according to the shape of the workpiece to further improve the clamping stability of the workpiece.

[0015] Preferably, the surface of the movable plate is detachably connected to a protective cover above the drive mechanism. The protective cover can effectively shield the welding slag, dust and spatter generated during the welding process, preventing damage to precision components such as the gear plate and gears of the drive mechanism, while also preventing operators from accidentally touching moving parts and improving operational safety. Mounting blocks are connected to the four corners of the protective cover, and screws are connected to the surface of the mounting blocks. The screws penetrate the mounting blocks and extend into the interior of the movable plate. The surface of the movable plate has screw holes for screwing the screws. The cooperation between the screws and the screw holes enables the quick installation and removal of the protective cover, facilitating daily inspection and maintenance of the drive mechanism.

[0016] Preferably, the surface of the rotating rod is fitted with a bearing B located inside the protective cover; the bearing B and the bearing A in the fixed seat form a double support structure, which radially constrains the rotating rod from different positions, further reducing the radial runout of the rotating rod during rotation, ensuring the smoothness of the rotation process, and thus improving the accuracy of workpiece flipping.

[0017] Compared with the prior art, the beneficial effects of this utility model are: (1) The automated operation is achieved through cylinders A, B and C. From the moving plate approaching the workpiece and the fixture holding the workpiece, to the drive mechanism driving the workpiece to flip and reset after the operation is completed, no manual intervention is required. Compared with traditional manual flipping or semi-automatic equipment, it can reduce the auxiliary operation time of workpiece picking, placing and flipping. It is especially suitable for the continuous production needs of robot welding production lines, effectively avoiding the production line stagnation caused by uneven rhythm of manual operation, and significantly improving the overall welding operation efficiency. At the same time, automated operation can also reduce the labor intensity of operators, reduce the frequency of manual participation in high-risk welding environments, and improve the safety of operation. (2) By accurately calculating the rotation angle through the transmission ratio of the toothed plate and the gear, the workpiece can be rotated within the range of 0-180°. This high-precision control can ensure that the welding surface of the workpiece is always in the best welding position of the robot, avoid quality problems such as weld offset and false welding caused by the deviation of the rotation angle, and ensure the quality consistency of batch welded workpieces. (3) The moving plate moves along the preset guide rail to ensure the initial alignment accuracy of the fixture and the workpiece; the cooperation between the limiting groove and the limiting block of the tooth plate ensures that the linear motion of the tooth plate does not deviate, thereby ensuring the stable meshing of the tooth plate and the gear. (4) The protective cover can effectively block welding spatter, dust and other debris from entering the drive mechanism, and avoid wear on precision transmission components such as gears and gear plates. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall connection of this utility model; Figure 2 This is a schematic diagram of the structure of the toothed plate and gear in three-dimensional meshing according to this utility model; Figure 3 This is a schematic diagram of the three-dimensional connection of the toothed plate, gear, cylinder B, and fixture of this utility model. Figure 4 This is a structural schematic diagram of the movable plate, fixed base, and limiting groove of this utility model; Figure 5 This is a schematic diagram of the structure of cylinder B, L-shaped rotating seat, and bearing B connected in this utility model. Figure 6 This is a schematic diagram of the structure of cylinder B and clamp when they are connected in three dimensions according to this utility model; Figure 7This is a top view of the structure of this utility model.

[0019] In the diagram: 1. Moving plate; 2. Protective cover; 3. Mounting block; 4. Cylinder A; 5. Screw; 6. L-shaped rotating seat; 7. Cylinder B; 8. Support block; 9. Clamp; 91. Connecting arm A; 92. Clamping plate; 93. Concave frame; 94. Smooth rod; 95. Connecting arm B; 96. First pin; 97. Second pin; 98. Connecting block; 99. Third pin; 10. Rotating rod; 11. Screw hole; 12. Limiting block; 13. Fixing block; 14. Position sensor; 16. Tooth plate; 17. Gear; 18. T-block; 19. Cylinder C; 20. Fixing seat; 21. Bearing A; 22. Bearing B; 23. Limiting groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved with", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] Please see Figure 1-7 This utility model provides a technical solution: a workpiece flipping mechanism for a robotic welding production line, comprising: a movable plate 1 and a cylinder A4. The movable plate 1 serves as the core mounting carrier of the entire flipping mechanism, bearing various components such as rotation, driving, and clamping. It is set on the side of the robotic welding production line, providing operating space for workpiece loading, unloading, and flipping. The cylinder A4 serves as a horizontal movement power source, with its output end fixedly connected to the side of the movable plate 1. Through the extension and retraction of the cylinder A4, the movable plate 1 can be driven to move horizontally along the side of the production line, enabling the entire flipping mechanism to move closer to or away from the workpiece. When it is necessary to clamp the workpiece, the cylinder A4 extends to push the movable plate 1 closer to the workpiece. After welding is completed, the cylinder A4 retracts to pull the movable plate 1 away, facilitating workpiece transfer.

[0023] It also includes an L-shaped rotating seat 6, which is connected to the surface of the moving plate 1 through a rotating structure and can rotate flexibly around the rotation axis. It is the key rotating component for realizing workpiece flipping. The top of the L-shaped rotating seat 6 is detachably connected to a cylinder B7 by bolts. The cylinder B7 provides clamping power for the fixture. A rotating rod 10 is fixedly connected to the side of the L-shaped rotating seat 6. The rotating rod 10 acts as a rotation transmission component, transmitting the power of the drive mechanism to the L-shaped rotating seat 6. A fixture 9 is provided at the output end of the cylinder B7. The fixture 9 is used to directly clamp the workpiece and opens and closes under the drive of the cylinder B7 to complete the gripping and fixing of the workpiece.

[0024] The surface of the movable plate 1 is equipped with a drive mechanism that drives the L-shaped rotating seat 6 to rotate. Its core function is to convert the linear motion of the cylinder into rotational motion, thereby achieving the angle flipping of the workpiece. This mechanism works in concert through cylinder C19, toothed plate 16, gear 17 and rotating rod 10: cylinder C19 provides linear driving force, toothed plate 16 and gear 17 form a transmission pair to realize the conversion of motion mode, and rotating rod 10 transmits rotational torque. When the fixture 9 clamps the workpiece, the output end of cylinder C19 drives toothed plate 16 to move. Because toothed plate 16 and gear 17 mesh with each other, the linear motion of toothed plate 16 is converted into the rotational motion of gear 17, which in turn drives rotating rod 10, L-shaped rotating seat 6, cylinder B7 and fixture 9 to rotate synchronously, ultimately realizing the function of flipping the workpiece to different welding angles.

[0025] The driving mechanism specifically includes: a T-shaped block 18 fixedly connected to the side of the toothed plate 16, which connects the cylinder C19 and the toothed plate 16 to ensure that the cylinder output force is stably transmitted to the toothed plate; the cylinder C19 is fixed to the surface of the moving plate 1 by bolts to ensure its own stability during the driving process; the toothed plate 16 slides on the surface of the moving plate 1 and can move smoothly along a preset trajectory; the output end of the cylinder C19 is fixedly connected to the T-shaped block 18, and the toothed plate 16 is moved by pushing the T-shaped block 18; the gear 17 is fixedly connected to the surface of the rotating rod 10 and meshes with the toothed plate 16 to form a transmission cooperation, converting linear power into rotational power.

[0026] The surface of the movable plate 1 is fixedly connected to the limiting block 12, and the surface of the toothed plate 16 is provided with a limiting groove 23 for sliding contact with the limiting block 12. The cooperation between the limiting block 12 and the limiting groove constitutes a guide limiting structure. Its core function is to limit the movement trajectory of the toothed plate 16, prevent the toothed plate 16 from shifting left or right or tilting during the movement, ensure that the toothed plate 16 and the gear 17 always maintain stable meshing, and improve the transmission accuracy and reliability.

[0027] The surface of the moving plate 1 is fixedly connected to the side of the limiting block 12 by a fixing block 13. A position sensor 14 is provided on one side of the fixing block 13, and the fixing block 13 provides mounting support for the position sensor 14. The position sensor 14 is used to monitor the moving position of the toothed plate 16 in real time, and then calculate the flip angle of the workpiece through the transmission relationship. When the toothed plate moves to the preset position (i.e. the workpiece reaches the target flip angle), the sensor sends a signal to control the cylinder C19 to stop, thereby achieving precise control of the flip angle.

[0028] The surface of the movable plate 1 is fixedly connected to a fixed seat 20 for supporting the rotating rod 10. The rotating rod 10 passes through the fixed seat 20, and a bearing A21 is provided on its surface inside the fixed seat 20. The function of the fixed seat 20 is to provide radial support for the rotating rod 10 and prevent the rotating rod from bending or shaking during rotation. The bearing A21 can convert the sliding friction between the rotating rod and the fixed seat into rolling friction, which greatly reduces the rotational resistance, reduces component wear, and ensures the smoothness of the rotating rod's rotation.

[0029] The output end of the cylinder B7 is fixedly connected to a support block 8. The support block 8 serves as a connecting transition piece, with one end connected to the output end of the cylinder B7 and the other end connected to the clamp 9. Its function is to expand the connection area between the cylinder output end and the clamp, ensuring that the driving force of the cylinder B7 can be stably transmitted to the clamp, while also enhancing the structural strength of the connection between the clamp and the cylinder.

[0030] The clamp 9 includes a concave frame 93, which serves as the mounting base for the clamp and provides support for each clamping component. A connecting arm A91 is rotatably connected inside the concave frame 93. The connecting arm A91 is the core transmission component of the clamp, driving the clamping action through rotation. A connecting arm B95 is hinged to the upper and lower ends of one end of the connecting arm A91. The connecting arm B95 connects the connecting arm A91 to the connecting block 98, transmitting driving force. A connecting block 98 is hinged to the inner side of the connecting arm B95. The connecting block 98 is connected to the guide rod 94, converting the linear motion of the guide rod into the rotational motion of the connecting arm. One end of the connecting block 98 is fixedly connected to the guide rod 94, which passes through the concave frame. The frame 93 is detachably connected to the support block 8. The guide rod 94 is driven to move back and forth by the cylinder B7, providing power for the opening and closing of the clamp. In addition, the concave frame 93 is connected to the connecting arm A91 by the first pin 96, the connecting arm A91 is connected to the connecting arm B95 by the second pin 97, and the connecting block 98 is connected to the connecting arm B95 by the third pin 99. The pin structure ensures flexible rotation between the components. The inner side of the connecting arm A91 is fixedly connected to the clamping plate 92, which directly contacts the workpiece. Its surface can be set with anti-slip texture or matching groove according to the shape of the workpiece to enhance the clamping stability of the workpiece and prevent the workpiece from slipping during the flipping process.

[0031] The surface of the movable plate 1 is detachably connected to a protective cover 2 above the drive mechanism. The core function of the protective cover 2 is to shield the drive mechanism (tooth plate, gears, etc.) from dust, welding slag and other debris, and to prevent the operator from accidentally touching the moving parts, thereby improving operational safety. Mounting blocks 3 are fixedly connected to the four corners of the protective cover 2. Screws 5 are connected to the surface of the mounting blocks 3. The screws 5 penetrate the mounting blocks 3 and extend into the interior of the movable plate 1. The surface of the movable plate 1 is provided with screw holes 11 for screwing the screws 5. The cooperation between the screws and the screw holes enables the quick installation and removal of the protective cover, which facilitates the inspection and maintenance of the drive mechanism.

[0032] The surface of the rotating rod 10 is fitted with a bearing B22 located inside the protective cover 2. The bearing B22 and the bearing A21 in the fixed seat 20 form a double support, which further enhances the stability of the rotating rod 10 when rotating, reduces radial runout during the rotation process, and ensures the accuracy of the workpiece flipping angle.

[0033] Specifically, during use, before the equipment is started, each component is in its initial state: the moving plate 1 is located in the initial position away from the welding production line, the clamp 9 is in the open state, the protective cover 2 is fixed to the surface of the moving plate 1 by the mounting block 3 and screws 5, forming protection for the drive mechanism below, cylinders A4, B7 and the drive mechanism cylinder C19 are all in the rodless chamber ventilation state, and the output end is retracted; the toothed plate 16 is stopped in the initial position close to the cylinder C19 with the cooperation of the limiting block 12 and the limiting groove 23, and the position sensor 14 monitors the position signal of the toothed plate 16 in real time to provide feedback for subsequent actions; When the welding production line transports the workpiece to the preset flipping station, the control system receives the station signal and starts the cylinder A4. The rod chamber of the cylinder A4 is ventilated, the output end extends and pushes the moving plate 1 to move along the guide rail (not shown in the figure) on the side of the production line towards the workpiece. During this process, the moving plate 1 drives the L-shaped rotating seat 6 on the surface, the drive mechanism and the clamp 9 to move closer to the workpiece in sync until the clamp 9 is aligned with the position to be clamped of the workpiece. After the moving plate 1 is positioned, the control system sends an action command to the cylinder B7. The rod chamber of the cylinder B7 is vented, the output end retracts and pulls the support block 8 to move backward. The support block 8 drives the light rod 94, which is detached from it, to move synchronously. The light rod 94 passes through the concave frame 93 and pulls the connecting block 98 to move closer to the support block 8. The connecting block 98 drives the connecting arms B95 on the upper and lower sides to rotate through the third pin 99. Since the connecting arm B95 is hinged to the connecting arm A91 through the second pin 97, the connecting arm A91 rotates inward around the first pin 96 as the rotation center under the drive of the connecting arm B95. Finally, the clamping plate 92 on the inner side of the connecting arm A91 is tightly attached to the surface of the workpiece, thus completing the clamping and fixing of the workpiece. After the workpiece is clamped, according to the welding process requirements, the control system activates cylinder C19 of the drive mechanism. Air is vented into the rod chamber of cylinder C19, and the output end pushes the T-block 18 to move. The T-block 18 drives the toothed plate 16 to slide along the surface of the moving plate 1. At this time, the limiting groove 23 at the bottom of the toothed plate 16 slides along the limiting block 12, ensuring that the toothed plate 16 always moves in a straight line and avoids deviation. Because the toothed plate 16 meshes with the gear 17 on the surface of the rotating rod 10, the linear motion of the toothed plate 16 is converted into the rotational motion of the gear 17. The gear 17 drives the rotating rod 10 to rotate synchronously. The rotating rod 10 rotates smoothly under the support of the bearing A21 inside the fixed seat 20 and the bearing B22 inside the protective cover 2. At the same time, it drives the L-shaped rotating seat 6, the cylinder B7 and the workpiece held by the clamp 9 to rotate together. By controlling the stroke of the output end of the cylinder C19, the moving distance of the gear plate 16 can be precisely adjusted, thereby controlling the rotation angle of the gear 17, and finally realizing the multi-angle flipping of the workpiece from 0-180° to meet the processing requirements of different welding surfaces. Throughout the entire operation, the position sensor 14 on the fixed block 13 continuously monitors the position of the toothed plate 16 and feeds the signal back to the control system in real time. If the toothed plate 16 moves beyond the preset stroke, the system will immediately trigger an alarm and stop the action to avoid overload damage to the mechanism. After the workpiece welding is completed, the rodless chamber of cylinder C19 of the drive mechanism is vented, the output end retracts, and the toothed plate 16 moves in the opposite direction. The gear 17 and the rotating rod 10 rotate in the opposite direction, so that the workpiece returns to the initial horizontal position. Then, the rodless chamber of cylinder B7 is vented, the output end extends, and the light rod 94 and the connecting block 98 move in the opposite direction. The connecting arm B95 and the connecting arm A91 rotate in the opposite direction in sequence, and the clamping plate 92 releases the workpiece. Finally, the rodless chamber of cylinder A4 is vented, the output end retracts, and the moving plate 1 and the entire mechanism return to the initial position, waiting for the next workpiece flipping operation. Meanwhile, the protective cover 2 can effectively prevent spatter, dust and other debris generated during the welding process from entering the drive mechanism, preventing wear on components such as gear 17 and gear plate 16, and extending the service life of the equipment.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A workpiece flipping mechanism for a robotic welding production line, characterized in that, include: The movable plate (1) and cylinder A (4) are arranged on the side of the robot welding production line, and the output end of cylinder A (4) is connected to the side of the movable plate (1). The output end of cylinder A (4) drives the movable plate (1) to move on the side of the robot welding production line so as to move closer to or away from it. L-shaped rotating seat (6), L-shaped rotating seat (6) is rotatably connected to the surface of moving plate (1), cylinder B (7) is bolted to the top of L-shaped rotating seat (6), rotating rod (10) is connected to the side of L-shaped rotating seat (6), and clamp (9) is provided at the output end of cylinder B (7). The surface of the moving plate (1) is provided with a driving mechanism, which is rotated by the cylinder C (19), toothed plate (16), gear (17) and rotating rod (10) of the driving mechanism. The fixture (9) clamps the workpiece of the robot welding production line so that the output end of the cylinder C (19) drives the toothed plate (16) to move. The toothed plate (16) meshes with the gear (17), so that the toothed plate (16) drives the gear (17), rotating rod (10), L-shaped rotating seat (6), cylinder B (7) and fixture (9) to rotate, thereby flipping the workpiece to different angles.

2. The workpiece flipping mechanism for a robotic welding production line according to claim 1, characterized in that, The drive mechanism includes a T-shaped block (18) connected to the side of the toothed plate (16), a cylinder C (19) connected to the surface of the moving plate (1) by bolts, and the toothed plate (16) sliding on the surface of the moving plate (1). The output end of the cylinder C (19) is connected to the T-shaped block (18), and the gear (17) is connected to the surface of the rotating rod (10). The gear (17) meshes with the toothed plate (16).

3. The workpiece flipping mechanism for a robotic welding production line according to claim 2, characterized in that, The surface of the movable plate (1) is connected to a limiting block (12), and the surface of the toothed plate (16) is provided with a limiting groove (23) for sliding contact with the limiting block (12).

4. The workpiece flipping mechanism for a robotic welding production line according to claim 3, characterized in that, The surface of the movable plate (1) is fixedly connected to the side of the limiting block (12) by a fixing block (13), and a position sensor (14) is provided on one side of the fixing block (13).

5. The workpiece flipping mechanism for a robotic welding production line according to claim 1, characterized in that, The surface of the movable plate (1) is connected to a fixed seat (20) for supporting the rotating rod (10), and the rotating rod (10) passes through the fixed seat (20). The surface of the rotating rod (10) is provided with a bearing A (21) inside the fixed seat (20).

6. The workpiece flipping mechanism for a robotic welding production line according to claim 1, characterized in that, The output end of cylinder B (7) is connected to a support block (8).

7. The workpiece flipping mechanism for a robotic welding production line according to claim 1, characterized in that, The clamp (9) includes a concave frame (93), with a connecting arm A (91) rotatably connected inside the concave frame (93). A connecting arm B (95) is hinged to the upper and lower ends of one end of the connecting arm A (91), and a connecting block (98) is hinged to the inner side of the connecting arm B (95). A light rod (94) is connected to one end of the connecting block (98), and the light rod (94) passes through the concave frame (93) and is detached from the support block (8).

8. The workpiece flipping mechanism for a robotic welding production line according to claim 7, characterized in that, A first pin (96) is connected between the concave frame (93) and the connecting arm A (91), a second pin (97) is connected between the connecting arm A (91) and the connecting arm B (95), a third pin (99) is connected between the connecting block (98) and the connecting arm B (95), and a clamping plate (92) is connected to the inner side of the connecting arm A (91).

9. A workpiece flipping mechanism for a robotic welding production line according to claim 1, characterized in that, The surface of the movable plate (1) is connected to a protective cover (2) above the drive mechanism. The four corners of the protective cover (2) are connected to mounting blocks (3), and the surface of the mounting blocks (3) is connected to screws (5). The screws (5) penetrate the mounting blocks (3) and extend into the interior of the movable plate (1). The surface of the movable plate (1) is provided with screw holes (11) for screwing the screws (5).

10. A workpiece flipping mechanism for a robotic welding production line according to claim 9, characterized in that, The surface of the rotating rod (10) is fitted with a bearing B (22) located inside the protective cover (2).

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