A line structure suitable for flexible production of positioning frames

Abstract

The present application relates to a kind of line body structures suitable for positioning frame flexible production, including safety fence, the inside of the safety fence is provided with robot ground rail, the upper portion of robot ground rail is slidably connected with mobile module, the mobile module includes the sliding rail being arranged at the two sides of robot ground rail, the sliding plate is clamped between the two sliding rails, the top of sliding plate is provided with mounting table and driving element, the inside of sliding plate is provided with the tipping moment self-compensation element capable of sensing the inclination swing of sliding plate and carrying out the automatic correction of the levelness of sliding plate, tipping moment self-compensation element includes sealed oil cavity, the inside of sealed oil cavity is provided with sensing sleeve, the upper portion of sensing sleeve is in contact with the bottom of sliding plate, spring piece group is sleeved on the outside of sensing sleeve.The present application realizes the passive self-adapting compensation of tipping moment, can be dynamically matched with correction degree with load, effectively improves robot positioning precision and operation stability.

Description

Technical Field

[0001] This invention relates to the field of flexible production line technology, specifically to a line structure suitable for flexible production of positioning frames. Background Technology

[0002] Positioning frames are key installation and support components in the automotive, construction machinery and other fields. Their production often adopts a flexible manufacturing mode with multiple varieties and variable batches. The ground rail moving system equipped with industrial robots is the core equipment for realizing the transfer and processing of workpieces between workstations. It needs to maintain stable operating accuracy and adaptability in the frequent switching of workpieces with different weights.

[0003] The existing robot ground rail moving slides mostly adopt a fixed pre-tightened linear guide pair structure, relying on rigid guidance and constant pre-tightening force to maintain the slide posture. The overturning moment generated by the robot arm grasping the workpiece is prone to cause the slide to tilt under uneven load. It is impossible to dynamically and adaptively compensate for the overturning moment according to the load weight. Under heavy load conditions, the positioning accuracy is significantly reduced, and the wear on one side of the guide rail is aggravated, making it difficult to adapt to the variable load conditions required for flexible production of multiple positioning frames. Summary of the Invention

[0004] The purpose of this invention is to provide a line structure suitable for flexible production of positioning frames, aiming to improve the problem in the prior art that it is impossible to dynamically and adaptively compensate for overturning moment according to load weight.

[0005] The objective of this invention is achieved through the following technical solution: a line structure suitable for flexible production of positioning frames, including a safety fence, wherein a robot ground rail is provided inside the safety fence, and a moving module is slidably connected to the upper part of the robot ground rail; The mobile module includes sliding rails set on both sides of the robot's ground rail, a sliding plate snapped between the two sliding rails, a mounting platform and a driving component set on the top of the sliding plate, and an overturning torque self-compensating component set inside the sliding plate that can sense the tilting and swaying of the sliding plate and automatically correct the levelness of the sliding plate. The overturning moment self-compensating component includes a sealing oil cavity, inside which is a sensing sleeve. The upper part of the sensing sleeve contacts the bottom of the sliding plate, and a spring plate assembly is sleeved on the outer side of the sensing sleeve. The side of the sealing oil cavity is connected to an efficiency-enhancing transmission box, and a push plate is slidably connected inside the efficiency-enhancing transmission box. A sliding rod is fixedly connected to one side of the push plate, and a wedge-shaped permanent magnet is fixedly connected to the outer end of the sliding rod. A reset spring is sleeved on the outer side of the sliding rod.

[0006] As a further description of the above technical solution: The sliding plate includes a support plate, and a rotating spherical shell is provided at the center of the bottom surface of the support plate. The support plate rotates and engages with the middle part of the sliding rail through the rotating spherical shell. A front magnetic block is provided on one side of the bottom surface of the support plate, and a rear repulsive magnetic block is provided on the other side of the bottom surface of the support plate. The front magnetic block and the rear repulsive magnetic block are respectively engaged with the wedge-shaped permanent magnet of the overturning moment self-compensating component.

[0007] As a further description of the above technical solution: The sliding rail includes a U-shaped slide table, with a central shaft at the center of the U-shaped slide table. Movable grooves are provided on both inner walls of the U-shaped slide table, with a pressing head inside the movable groove. An air bladder is provided between the pressing head and the bottom of the movable groove.

[0008] As a further description of the above technical solution: The airbag is linked to the bottom of the sliding plate. When the sliding plate swings, it compresses the airbag on the corresponding side, causing the pressing head to push outward and press the inner side of the robot's ground rail.

[0009] As a further description of the above technical solution: The cross-sectional area of ​​the vertical connecting section of the enhanced transmission box is larger than that of the horizontal transmission section, which amplifies the thrust of the hydraulic oil in the sealed oil chamber after it enters the enhanced transmission box, pushing the sliding rod to drive the wedge-shaped permanent magnet to produce displacement.

[0010] As a further description of the above technical solution: The driving component is located on the top side of the sliding plate. The driving component includes a mounting frame, and a transmission end is provided inside the mounting frame. A driving gear is fixedly connected to the bottom of the transmission end, and the driving gear meshes with a rack on the robot's ground track.

[0011] As a further description of the above technical solution: The robot track includes a base, with guide rails on both sides of the top of the base, a rack in the middle of the top of the base, a barrier rail on one side of the base, and a drive motor at the end of the base.

[0012] As a further description of the above technical solution: The safety fence is equipped with a welding unit, a press unit, and a workpiece conveying unit. The safety fence has loading and unloading ports on both sides. The side closer to the press unit is the loading port, and the side closer to the welding unit is the unloading port. An electrical control box is installed on one side of the safety fence. A gripping robot is installed on the top surface of the mounting platform. The gripping robot moves along the robot track to complete the workpiece transfer and processing between the workstations.

[0013] Compared with the prior art, the advantages of the present invention are as follows: 1. The load-bearing plate tilts under load, causing the bottom induction sleeve to slide downwards along the sealed oil cavity. This simultaneously compresses the spring plate assembly and squeezes the hydraulic oil in the cavity into the side-mounted enhanced transmission box. The hydraulic thrust is amplified by the difference in cross-sectional area between the vertical connecting section and the horizontal transmission section of the transmission box. This, in turn, pushes the push plate and sliding rod to cause the wedge-shaped permanent magnets on both sides to move in opposite directions. This enhances the repulsive effect between the wedge-shaped permanent magnets on the load side and the repulsive magnets on the rear side, and improves the attraction effect between the wedge-shaped permanent magnets on the opposite side and the magnets on the front side. This achieves passive adaptive compensation of the overturning torque, which can dynamically match and correct the force according to the load, effectively improving the robot's positioning accuracy and operational stability.

[0014] 2. By swinging the support plate and simultaneously squeezing the airbags in the corresponding U-shaped slide, the air pressure inside the airbags increases and pushes the clamping head in the movable groove outward, pressing it against the inner surface of the robot's ground rail. The greater the tilt, the greater the airbag compression and the stronger the clamping force, thus realizing the adaptive adjustment of the sliding damping of the moving module. Under heavy load, the damping is automatically increased to reduce the sliding speed and reduce the wear on one side of the guide rail. Under light load, the damping is automatically reduced to ensure the moving efficiency, taking into account both the service life of the equipment and the production cycle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main body of an embodiment of a line structure suitable for flexible production of positioning frames proposed in this invention; Figure 2 This is a schematic diagram of a robot ground rail structure suitable for flexible production line structure of positioning frame proposed in this invention; Figure 3 This is a schematic diagram of the structure of a moving module for a flexible production line of a positioning frame, as proposed in this invention. Figure 4 This is a schematic diagram of the drive component of a production line structure suitable for flexible production of positioning frames proposed in this invention; Figure 5 This is a schematic diagram of the sliding plate structure of a production line suitable for flexible production of positioning frames proposed in this invention; Figure 6 This is a schematic diagram of a sliding rail structure suitable for flexible production line structure of positioning frame proposed in this invention; Figure 7 This is a structural schematic diagram of a self-compensating component for overturning moment of a production line structure suitable for flexible production of positioning frames, as proposed in this invention. Figure 8 This is a schematic diagram of a U-shaped slide table, which is suitable for flexible production line structure of positioning frame proposed in this invention.

[0016] Labeling Explanation: 1. Safety Fence; 2. Loading / Unloading Port; 3. Welding Unit; 4. Robot Rail; 401. Base; 402. Guide Rail; 403. Rack; 404. Barrier Rail; 405. Drive Motor; 5. Moving Module; 51. Mounting Platform; 52. Sliding Plate; 521. Bearing Plate; 522. Rotating Spherical Shell; 523. Leading Magnetic Block; 524. Rearing Repulsive Magnetic Block; 53. Drive Component; 531. Mounting Frame; 532. Transmission End; 533. Drive Gear 54. Sliding rail; 541. U-shaped slide table; 542. Pressing head; 543. Airbag; 544. Central shaft; 545. Movable groove; 55. Overturning moment self-compensating component; 551. Sealing oil chamber; 552. Induction sleeve; 553. Spring plate assembly; 554. Efficient transmission box; 555. Push plate; 556. Sliding rod; 557. Wedge-shaped permanent magnet; 558. Return spring; 6. Gripping robot; 7. Press unit; 8. Workpiece conveyor; 9. Electrical control box. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figures 1 to 8 The diagram shows an embodiment of a production line structure suitable for flexible production of positioning frames provided by the present invention. The production line structure includes a safety fence 1, which provides safety isolation and protection for the production area and ensures operational safety. Inside the safety fence 1, there is a robot track 4, which forms a long-distance straight-line walking base and provides an operation path covering all workstations on the production line. A moving module 5 is slidably connected to the upper part of the robot track 4. The moving module 5 serves as the robot's installation, support, and walking execution unit, integrating guidance, drive, and attitude self-compensation functions.

[0018] The safety fence 1 is internally equipped with a welding unit 3, a press unit 7, and a conveying workpiece 8. The press unit 7 performs multiple stamping, pressing, and shaping processes on the positioning frame workpiece, completing the stamping and forming of the workpiece. The welding unit 3 completes the welding and fixing process of the positioning frame components after stamping and forming, realizing the connection and forming of the workpiece. The conveying workpiece 8 connects different processing stations such as the press unit 7 and the welding unit 3, carrying the positioning frame workpiece for transfer and transport between processes, ensuring smooth process connection. The safety fence 1 is internally equipped with a welding unit 3, a press unit 7, and a conveying workpiece 8. The safety fence 1 has loading and unloading ports 2 at both ends. The side closer to the press unit 7 is the loading port, and the side closer to the welding unit 3 is the unloading port, thereby realizing the loading of positioning frame blanks and the unloading of finished workpieces, which is convenient for operators to replenish materials and collect finished products outside the safety fence. An electrical control box 9 is set on one side of the safety fence 1. The electrical control box 9 integrates the control unit of the production line, realizing the operation control, status monitoring and logic scheduling of each piece of equipment, ensuring the fully automated operation of the line. The top surface of the mounting platform 51 is equipped with a gripping robot 6. The gripping robot 6 performs workpiece gripping, transportation and loading / unloading actions to realize workpiece flow and operation coordination between various workstations. The gripping robot 6 moves along the robot ground rail 4 to complete the workpiece transfer and processing between various workstations.

[0019] The robot track 4 includes a base 401, which forms the main support frame of the robot track 4, bearing all the functional components of the track and ensuring overall installation rigidity and structural strength. Guide rails 402 are provided on both sides of the top of the base 401. The guide rails 402 provide high-precision linear guidance support for the moving module 5, ensuring the straightness and positional accuracy of the moving module 5. A rack 403 is provided in the middle of the top of the base 401. The rack 403 serves as a linear transmission driven component, and works with gears to convert rotary motion into linear motion. An isolation rail 404 is provided on one side of the base 401. The isolation rail 404 provides lateral limiting and protective isolation in the track's walking area, preventing foreign objects from entering the walking area. A drive motor 405 is provided at the end of the base 401. The drive motor 405 provides power output for the movement of the moving module 5, enabling the starting, stopping, speed adjustment, and reciprocating motion control of the moving module 5.

[0020] The mobile module 5 includes sliding rails 54 on both sides of the robot ground rail 4. The sliding rails 54 serve as the supporting and guiding base for the sliding plate 52, and integrate an adaptive clamping damping structure to realize rotational support and sliding damping adjustment. The sliding plate 52 is snapped between the two sliding rails 54. The sliding plate 52 serves as the bearing base for the upper functional components and can tilt and swing in response to overturning torque. It serves as the execution carrier for attitude correction. The top of the sliding plate 52 is provided with a mounting platform 51 and a drive component 53. The mounting platform 51 provides a standard installation interface and fixed reference for the gripping robot 6, ensuring the robot's installation accuracy and connection rigidity. The drive component 53 provides a rotational drive source for the movement of the mobile module 5 and outputs a stable transmission torque. The sliding plate 52 is equipped with an overturning torque self-compensating component 55 that can sense the tilting and swinging of the sliding plate 52 and automatically correct the level of the sliding plate 52. The overturning torque self-compensating component 55 senses the tilting posture of the sliding plate 52 and automatically generates a reverse correction torque to realize passive adaptive adjustment of the level of the sliding table.

[0021] The overturning moment self-compensating component 55 includes a sealed oil chamber 551, which stores hydraulic transmission medium, provides a sealed hydraulic working cavity, and provides a sliding guide for the sensing component. A sensing sleeve 552 is installed inside the sealed oil chamber 551. The sensing sleeve 552 directly senses the tilt displacement of the sliding plate 52, converting the mechanical tilting action into hydraulic oil pressure output as a self-compensating trigger sensing element. The upper part of the sensing sleeve 552 contacts the bottom of the sliding plate 52. A spring plate assembly 553 is sleeved on the outer side of the sensing sleeve 552. The spring plate assembly 553 provides a reset force under no-load conditions, maintaining the initial high position of the sensing sleeve 552 and ensuring automatic structural reset after the load is removed. The side of the sealed oil chamber 551 is connected to an efficiency-enhancing transmission box 554. The enhanced transmission box 554 utilizes the difference in cross-sectional area to amplify hydraulic thrust, converting small displacement sensing input into large thrust output, ensuring the driving force of the magnetic coupling mechanism. Inside the enhanced transmission box 554, a push plate 555 is slidably connected. The push plate 555 bears the hydraulic thrust, converting hydraulic pressure into linear thrust, realizing the reversal transmission of power. A sliding rod 556 is fixedly connected to one side of the push plate 555. The sliding rod 556 transmits linear displacement and thrust, causing the end magnetic block to generate synchronous displacement, realizing power transmission. The cross-sectional area of ​​the vertical connecting section of the enhanced transmission box 554 is larger than that of the horizontal transmission section, so that the hydraulic oil in the sealed oil chamber 551 enters the enhanced transmission box 554 and the thrust is amplified, pushing the sliding rod 556 to drive the wedge-shaped permanent magnet block 557 to generate displacement. A wedge-shaped permanent magnet 557 is fixedly connected to the outer end of the sliding rod 556. The wedge-shaped permanent magnet 557 changes its coupling area with the corresponding magnet by displacement, generating magnetic repulsion and magnetic attraction, forming a reverse correction torque. A return spring 558 is sleeved on the outer side of the sliding rod 556. The return spring 558 provides a return elastic force. After the load is removed, it pushes the moving part back to the initial position, so that the magnetic coupling mechanism returns to the low-operation state.

[0022] The sliding plate 52 includes a support plate 521, which supports the upper robot and the installation load, transmits overturning moment, and can tilt and swing around a fulcrum. A rotating spherical shell 522 is set at the center of the bottom surface of the support plate 521. The rotating spherical shell 522 constitutes the universal swing fulcrum of the support plate 521, realizing multi-directional free tilting of the support plate 521 and ensuring the flexibility of attitude response. The support plate 521 is rotated and engaged with the middle part of the sliding rail 54 through the rotating spherical shell 522. One side of the bottom surface of the support plate 521 is provided with A front magnetic block 523 is provided, which cooperates with the opposite poles of the corresponding permanent magnet to generate a magnetic attraction force, forming a downward pulling force on the floating side of the support plate 521. A rear repulsive magnetic block 524 is provided on the other side of the bottom surface of the support plate 521, which cooperates with the same poles of the corresponding permanent magnet to generate a magnetic repulsion force, forming an upward pushing force on the sinking side of the support plate 521. The front magnetic block 523 and the rear repulsive magnetic block 524 respectively cooperate with the wedge-shaped permanent magnet 557 of the overturning moment self-compensation component 55.

[0023] The sliding rail 54 includes a U-shaped slide table 541, which forms the main frame of the sliding rail 54, accommodates the internal damping components, and provides the mounting reference for each component. A central shaft 544 is located at the center of the U-shaped slide table 541, providing a central support shaft for the swing of the sliding plate 52 and ensuring the stable rotation of the bearing plate 521 around the center. Movable grooves 545 are provided on both inner walls of the U-shaped slide table 541. These grooves provide sliding guide cavities for the clamping head 542, limiting the movement direction and stroke range of the clamping head 542. The unit is equipped with a pressing head 542, which is driven by air pressure to push out of the side of the pressing guide rail 402, providing sliding damping and adjusting the sliding speed of the moving module 5. An airbag 543 is provided between the pressing head 542 and the bottom of the movable groove 545. When the airbag 543 is squeezed, the internal air pressure changes, which convert the tilt displacement into the pushing force of the pressing head 542, realizing adaptive adjustment of the damping force. The airbag 543 is linked with the bottom of the sliding plate 52. When the sliding plate 52 swings, it compresses the airbag 543 on the corresponding side, driving the pressing head 542 to push outward to the inner side of the pressing robot ground rail 4.

[0024] The drive component 53 is located on the top side of the sliding plate 52. The drive component 53 includes a mounting frame 531, which fixes the transmission end 532 component and provides the mounting reference and protective housing for the drive component 53. The transmission end 532 is located inside the mounting frame 531. The transmission end 532 outputs stable rotational power and provides torque input for gear transmission. The bottom of the transmission end 532 is fixedly connected to the drive gear 533. The drive gear 533 cooperates with the rack 403 to achieve meshing transmission and convert the rotational power into linear motion power. The drive gear 533 meshes with the rack 403 on the robot ground rail 4.

[0025] Working principle: Inside the safety fence 1, the press unit 7, welding unit 3, workpiece conveying unit 8 and other stations are in standby mode. The moving module 5 above the robot rail 4 is parked at the initial station. The gripping robot 6 on the top of the mounting platform 51 is in an unloaded state. The bearing plate 521 of the sliding plate 52 is kept horizontal under the support of the rotating spherical shell 522, and the overturning moment self-compensating component 55 is in the initial position. The induction sleeve 552 is in the upper high position of the sealing oil cavity 551 under the elastic support of the spring plate group 553, and the hydraulic oil in the sealing oil cavity 551 maintains the initial volume. The push plate 555 inside the efficiency transmission box 554 is in the inner limit position close to the sealing oil cavity 551 under the action of the return spring 558. The sliding rod 556 on one side of the push plate 555 drives the wedge permanent magnet block 557 to be in the initial position at the same time. The wedge permanent magnet block 557 and the front magnetic block 523 and the rear repulsive magnetic block 524 on the bottom surface of the bearing plate 521 have the smallest facing area and the weakest magnetic coupling effect. Inside the U-shaped slide table 541 of the sliding rails 54 on both sides, the airbag 543 is in a naturally inflated state, and the clamping head 542 is housed inside the movable groove 545. The outer end face of the clamping head 542 maintains a gap with the inner surface of the guide rail 402 of the robot ground rail 4, allowing the moving module 5 to slide freely along the guide rail 402 without additional resistance. The transmission end 532 of the drive component 53 and the drive gear 533 are in a stationary locked state, and the electrical control box 9 monitors the standby status of all equipment.

[0026] After the operator replenishes the blank workpiece of the positioning frame through the loading / unloading port 2, the gripping robot 6 moves along the robot ground rail 4 with the moving module 5 to the loading / unloading port 2 position. The robotic arm extends to grip the workpiece of the positioning frame. The overturning moment generated by the cantilever load acts on the sliding plate 52 through the mounting platform 51, causing the bearing plate 521 to tilt and swing around the rotating spherical shell 522 in the middle. The side corresponding to the load deflects downward, and the opposite side deflects upward. At the same time as the bearing plate 521 tilts, its bottom presses downward against the sensing sleeve 552 corresponding to the deflection side. The sensing sleeve 552 slides downward along the inner wall of the sealing oil cavity 551, simultaneously compressing the outer spring plate group 553, pushing the hydraulic oil inside the sealing oil cavity 551 towards the side-connected efficiency transmission box 554.

[0027] Hydraulic oil squeezed by the induction sleeve 552 flows from the sealed oil chamber 551 into the vertical connecting section of the enhancement transmission box 554, and then into the horizontal transmission section. Because the cross-sectional area of ​​the vertical connecting section of the enhancement transmission box 554 is larger than that of the horizontal transmission section, the pressure of the hydraulic oil is amplified by the change in cross-sectional area. The increased oil pressure continuously acts on the end face of the push plate 555, pushing the push plate 555 to slide outwards in the horizontal direction. During the sliding process, the push plate 555 drives the sliding rod 556 to move outwards synchronously, compressing the return spring 558 sleeved on the outside of the sliding rod 556. The wedge-shaped permanent magnet block 557 fixed at the outer end of the sliding rod 556 undergoes synchronous linear displacement with the sliding rod 556. Specifically, the wedge-shaped permanent magnet block 557 corresponding to the load side moves towards the center of the bearing plate 521, while the wedge-shaped permanent magnet block 557 corresponding to the opposite side moves towards the outside of the bearing plate 521.

[0028] During the displacement of the wedge-shaped permanent magnet 557, the area facing the wedge-shaped permanent magnet 557 on the load side and the rear repulsive magnet 524 on the bottom surface of the bearing plate 521 gradually increases. The magnetic repulsion force generated by the like poles facing each other increases synchronously with the increase of the coupling area. The magnetic repulsion force exerts an upward thrust on the load side of the bearing plate 521, counteracting the sinking trend caused by the load. On the opposite side, the area facing the wedge-shaped permanent magnet 557 and the front attracting magnet 523 on the bottom surface of the bearing plate 521 gradually increases. The magnetic attraction force generated by the unlike poles facing each other increases synchronously with the increase of the coupling area. The magnetic attraction force exerts a downward pull on the opposite side of the bearing plate 521, suppressing the upward floating trend on the opposite side. The upward thrust and downward pull together form a corrective torque opposite to the overturning torque, dynamically correcting the tilting posture of the bearing plate 521. The greater the load weight, the greater the swing amplitude of the bearing plate 521, the longer the displacement distance of the wedge permanent magnet block 557, the higher the magnetic coupling degree, and the greater the corrective torque generated until the bearing plate 521 returns to a horizontal position.

[0029] During the tilting and swinging of the support plate 521 around the rotating spherical shell 522, the bottom of the support plate 521 simultaneously compresses the airbag 543 inside the corresponding side U-shaped slide 541. After being compressed, the internal air pressure of the airbag 543 increases. The gas pressure acts on the inner end face of the pressing head 542 in the movable groove 545, pushing the pressing head 542 outward along the movable groove 545, so that the outer end face of the pressing head 542 presses against the inner surface of the guide rail 402 of the robot ground rail 4. The greater the tilting amplitude of the support plate 521, the greater the compression of the airbag 543, the higher the internal air pressure, and the greater the pressing force of the pressing head 542 on the guide rail 402. The resistance of the moving module 5 sliding along the guide rail 402 increases accordingly. The smaller the tilting amplitude, the smaller the compression of the airbag 543, the smaller the pressing force, and the smaller the sliding resistance.

[0030] The transmission end 532 inside the drive component 53 outputs power, driving the drive gear 533 at the bottom to rotate. The drive gear 533 meshes with the rack 403 at the top of the base 401, driving the entire moving module 5 to move along the guide rail 402 between various workstations. During the movement, the overturning moment self-compensation component 55 senses the attitude change of the bearing plate 521 in real time and dynamically adjusts the magnetic coupling torque to maintain the levelness of the bearing plate 521. At the same time, the clamping force of the sliding rail 54 is adaptively adjusted according to the load state. Under heavy load, the damping is increased to reduce the sliding speed, and under light load, the damping is reduced to improve the moving efficiency.

[0031] The mobile module 5 drives the gripping robot 6 to sequentially transfer the workpieces to the press unit 7, completing multiple stamping and forming processes; then, the workpieces are transferred to the welding unit 3 via the conveyor 8 to complete the welding and fixing of the parts; finally, the finished positioning frame is transported back to the loading and unloading port 2 to complete the unloading. The electrical control box 9 schedules the operation of each piece of equipment throughout the process, collects equipment status data, and ensures smooth process connections.

[0032] After the gripping robot 6 completes the corresponding process and lowers the workpiece from the positioning frame, the overturning torque disappears, the tilting tendency of the bearing plate 521 is eliminated, and the pressure acting on the top of the sensing sleeve 552 is released. The compressed spring plate group 553 rebounds and resets, pushing the sensing sleeve 552 upward along the sealing oil cavity 551. A negative pressure is formed inside the sealing oil cavity 551, and the hydraulic oil flows back from the enhanced transmission box 554 to the sealing oil cavity 551. At the same time, the compressed reset spring 558 rebounds, pushing the push plate 555, the sliding rod 556, and the wedge-shaped permanent magnet block 557 to move in the opposite direction and return to the initial position. The coupling effect between the wedge-shaped permanent magnet block 557 and the front magnetic block 523 and the rear repulsive magnetic block 524 disappears. The squeezed airbag 543 synchronously returns to its natural state, and the pressing head 542 retracts into the movable groove 545 under the action of air pressure, releasing the pressing effect on the guide rail 402. The moving module 5 returns to the low-resistance sliding state, waiting for the next work cycle.

[0033] When producing positioning frame workpieces of different models and weights, no manual adjustment of equipment parameters is required. The overturning moment self-compensating component 55 can automatically match the corresponding correction torque and guide rail 402 clamping damping according to the load weight. The greater the workpiece weight, the greater the downward stroke of the induction sleeve 552, the greater the thrust after hydraulic amplification, the greater the displacement of the wedge permanent magnet block 557, and the magnetic correction torque and guide rail 402 clamping force increase synchronously. The smaller the workpiece weight, the smaller the movement range of each structure, and the correction force and clamping force decrease synchronously, automatically adapting to the flexible production needs of positioning frames with multiple varieties and variable weights.

Claims

1. A production line structure suitable for flexible production of positioning frames, comprising a safety fence (1), characterized in that: The safety fence (1) is equipped with a robot rail (4) inside, and a moving module (5) is slidably connected to the upper part of the robot rail (4). The moving module (5) includes sliding rails (54) set on both sides of the robot ground rail (4), a sliding plate (52) is snapped between the two sliding rails (54), a mounting platform (51) and a driving component (53) are set on the top of the sliding plate (52), and an overturning moment self-compensating component (55) is set inside the sliding plate (52) to sense the tilting and swinging of the sliding plate (52) and automatically correct the level of the sliding plate (52). The overturning moment self-compensating component (55) includes a sealing oil cavity (551), an induction sleeve (552) is provided inside the sealing oil cavity (551), the upper part of the induction sleeve (552) is in contact with the bottom of the sliding plate (52), a spring plate group (553) is sleeved on the outside of the induction sleeve (552), an efficiency transmission box (554) is connected to the side of the sealing oil cavity (551), a push plate (555) is slidably connected inside the efficiency transmission box (554), a sliding rod (556) is fixedly connected to one side of the push plate (555), a wedge-shaped permanent magnet block (557) is fixedly connected to the outer end of the sliding rod (556), and a reset spring (558) is sleeved on the outside of the sliding rod (556).

2. The line structure suitable for flexible production of positioning frames according to claim 1, characterized in that: The sliding plate (52) includes a support plate (521). A rotating spherical shell (522) is provided at the center of the bottom surface of the support plate (521). The support plate (521) rotates and engages with the middle part of the sliding rail (54) through the rotating spherical shell (522). A front magnetic block (523) is provided on one side of the bottom surface of the support plate (521), and a rear repulsive magnetic block (524) is provided on the other side of the bottom surface of the support plate (521). The front magnetic block (523) and the rear repulsive magnetic block (524) are respectively engaged with the wedge-shaped permanent magnet (557) of the overturning moment self-compensating component (55).

3. The line structure suitable for flexible production of positioning frames according to claim 1, characterized in that: The sliding rail (54) includes a U-shaped slide (541), with a central shaft (544) at the center of the U-shaped slide (541). Movable grooves (545) are provided on both sides of the inner wall of the U-shaped slide (541). A pressing head (542) is provided inside the movable groove (545), and an airbag (543) is provided between the pressing head (542) and the bottom of the movable groove (545).

4. A production line structure suitable for flexible production of positioning frames according to claim 3, characterized in that: The airbag (543) is linked to the bottom of the sliding plate (52). When the sliding plate (52) swings, it compresses the airbag (543) on the corresponding side, causing the pressing head (542) to push outward to press the inner side of the robot ground rail (4).

5. A production line structure suitable for flexible production of positioning frames according to claim 1, characterized in that: The vertical connecting section of the enhanced transmission box (554) has a larger cross-sectional area than the horizontal transmission section, which amplifies the thrust of the hydraulic oil in the sealed oil chamber (551) after it enters the enhanced transmission box (554), pushing the sliding rod (556) to drive the wedge-shaped permanent magnet block (557) to generate displacement.

6. A production line structure suitable for flexible production of positioning frames according to claim 1, characterized in that: The drive component (53) is located on the top side of the sliding plate (52). The drive component (53) includes a mounting frame (531). A transmission end (532) is provided inside the mounting frame (531). A drive gear (533) is fixedly connected to the bottom of the transmission end (532). The drive gear (533) meshes with the rack (403) on the robot ground rail (4).

7. A production line structure suitable for flexible production of positioning frames according to claim 1, characterized in that: The robot track (4) includes a base (401), guide rails (402) are provided on both sides of the top of the base (401), a rack (403) is provided in the middle of the top of the base (401), a barrier rail (404) is provided on one side of the base (401), and a drive motor (405) is provided at the end of the base (401).

8. A production line structure suitable for flexible production of positioning frames according to claim 1, characterized in that: The safety fence (1) is equipped with a welding unit (3), a press unit (7) and a conveying workpiece (8). The safety fence (1) has loading and unloading ports (2) on both sides. The side closer to the press unit (7) is the loading port, and the side closer to the welding unit (3) is the unloading port. The safety fence (1) has an electrical control box (9) on one side. The top surface of the mounting platform (51) is equipped with a gripping robot (6). The gripping robot (6) moves along the robot ground rail (4) to complete the transfer and processing of workpieces between each station.

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