Automatic leveling and shearing device for cable bridge plate

Abstract

The present application relates to the technical fields of plate shearing, and discloses an automatic leveling and shearing device for cable bridge plate, which comprises a workbench, a bottom support is symmetrically and fixedly connected to the bottom of the workbench, a cutting tool is arranged at the center of the lower part of the workbench, a lifting assembly is arranged above the bottom support and can drive the cutting tool to lift, two supporting plates are slidably connected to the inner wall of the workbench, a flattening assembly is arranged on the workbench, and the flattening plate is driven to move downward in advance before the cutting tool is lifted and sheared, so that uniform pressing force is applied to the upper surface of the plate, the cable bridge plate with warping and arching deformation is pre-compacted on the supporting plate, the wave deformation of the plate itself is eliminated, and the leveling operation before shearing is completed; meanwhile, the plate is preliminarily limited and constrained by the clamping action of the flattening plate and the supporting plate, and the positioning accuracy of the plate shearing operation is improved.

Description

Technical Field

[0001] This invention belongs to the field of sheet metal cutting technology, specifically relating to an automatic leveling and cutting device for cable tray sheets. Background Technology

[0002] Cable tray sheet material is the core metal substrate for making cable trays. It is mostly made of cold-rolled steel sheet, galvanized steel sheet, aluminum alloy sheet, etc., and possesses high strength, corrosion resistance, and good toughness. It is a basic supporting material in power, construction, municipal, and industrial and mining projects. This type of sheet material is mainly used to process various types of cable trays, such as trough-type, ladder-type, and tray-type, for laying, organizing, and protecting power cables and control cables. It is widely used in commercial buildings, industrial plants, rail transit, underground pipe corridors, and new energy power plants. Before processing, the sheet material is a regular metal coil or flat plate, which needs to be shaped through processes such as leveling, shearing, and bending. The flatness of the sheet surface and the cutting accuracy directly determine the assembly accuracy and stability of the finished cable tray.

[0003] Currently, in the processing and production of cable tray sheet metal, conventional leveling and shearing equipment is a general-purpose processing device for sheet metal forming, and the overall operation process tends to be standardized. During actual processing, workers transport the metal sheet to be processed to the equipment's processing station. A pre-set clamping structure flattens the surface of the sheet, correcting the basic deformation that occurred during production and transportation. After leveling, the cutting mechanism of the equipment performs a fixed-length shearing operation, completing the cutting of a single sheet. After each processing cycle, the equipment resets and releases the workpiece, and the finished sheet is transferred manually or via a conveyor mechanism. This continuous cycle completes the leveling and shearing of batches of sheets, adapting to the large-scale pre-processing needs of cable tray sheet metal.

[0004] Conventional cable tray sheet leveling and shearing equipment relies solely on elastic clamping to level and limit the sheet material. After uncoiling and transport, the sheet material generally exhibits warping and arching deformation. During the shearing process, the upward pushing shearing force of the cutter can easily lift the sheet material, causing the clamping structure to be slightly lifted and the clamping to loosen. This results in the leveled sheet material springing back, secondary warping, and displacement, ultimately leading to skewed shearing cuts, poor flatness of the sheet surface, and difficulty in ensuring processing accuracy and finished product quality.

[0005] Therefore, the present invention provides an automatic leveling and shearing device for cable tray plates. Summary of the Invention

[0006] To overcome the shortcomings of the prior art: to solve at least one technical problem raised in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The automatic leveling and shearing device for cable tray plates of the present invention includes a worktable, a bottom support symmetrically fixedly connected to the bottom of the worktable, a cutting blade arranged at the center of the bottom of the worktable, a lifting component that can drive the cutting blade to rise and fall above the bottom support, two support plates slidably connected to the inner wall of the worktable, multiple telescopic rods fixedly connected to the bottom of the worktable, the output end of the telescopic rods being fixedly connected to the bottom of the support plates, a slit being provided between the two support plates, a flattening component being provided on the worktable, the flattening component including a pressing plate, the pressing plate can press and clamp the plate between the pressing plate and the support plates by descending, a locking component is provided between the upper surface of the pressing plate and the side of the worktable, the locking component can completely lock and bind the pressing plate in a position that is in contact with the worktable.

[0008] Preferably, the lifting assembly includes a clamping plate, which is fixedly connected to the outer wall of the cutting tool. Inner sliders are fixedly connected to both sides of the clamping plate, and a limiting slide is fixedly connected to the top of the base bracket. The inner sliders are slidably connected to the inner wall of the limiting slide, and a telescopic rod 2 is fixedly connected to the top inner wall of the limiting slide. The output end of the telescopic rod 2 is fixedly connected to the top of the inner slider.

[0009] Preferably, the flattening assembly includes multiple plug-in seats, each plug-in seat is fixedly connected to the upper two sides of the flattening plate, each flattening plate has a plug-in rod inserted into its inner wall, the bottom of each plug-in rod is fixedly connected to the top of the flattening plate, a buffer spring is fixedly connected between the surface of the flattening plate and the bottom of the plug-in seat, and gear assemblies that drive the plug-in seats to move downwards are provided on both sides of the flattening plate.

[0010] Preferably, the gear assembly includes two protective chambers, which are fixedly connected to both sides of the workbench. A rack plate is fixedly connected to the upper side of both sides of the clamping plate. Gears are rotatably connected to the inner walls of the protective chambers. The teeth of the rack plate mesh with the teeth of the gears. A T-shaped bracket is fixedly connected between the plug-in seats on the same side. A rack plate is fixedly connected to the lower side of the T-shaped bracket. The rack plate also meshes with the teeth of the gears. Both the rack plate and the rack plate slide against the inner walls of the protective chambers.

[0011] Preferably, the engaging assembly includes multiple fixing seats, which are respectively fixedly connected to the upper two sides of the pressure plate. A trapezoidal block 1 is inserted into one side of each fixing seat, and a return spring is fixedly connected between the trapezoidal block 1 and the side of the fixing seat. A positioning plate is provided on both sides of the protective chamber, and a trapezoidal block 2 is fixedly connected to one side of each positioning plate. A trapezoidal groove is provided below each trapezoidal block 2, and the trapezoidal groove and the trapezoidal block 1 engage with each other.

[0012] Preferably, a bearing seat is fixedly connected to both sides of the protective compartment, the bottom end of the positioning plate is fixedly connected to the outer wall of the shaft of the bearing seat, and a hinge rod is fixedly connected to the outer wall of the shaft of the bearing seat. The hinge rod is perpendicular to the positioning plate, and a disassembly assembly is provided on one side of the hinge rod to drive it to rotate downwards.

[0013] Preferably, the disassembly assembly includes a side plate, which is fixedly connected to one side of the rack plate. The inner side of the side plate is symmetrically fixedly connected to a bearing seat 2. The outer wall of the shaft of the bearing seat 2 is fixedly connected to a hinge rod 2. A wedge block 1 is fixedly connected to one side of the hinge rod 2. A wedge block 2 is fixedly connected to the end of the hinge rod 1 away from the bearing seat 1. The wedge block 2 corresponds to the wedge block 1.

[0014] Preferably, both sides of the protective compartment are fixedly connected with stop rods, and the outer wall of the stop rods fits against the top of the hinge rod.

[0015] Preferably, each of the side plates has a symmetrically fixed anti-arc rod on its top, with one end of the anti-arc rod fitting against the top of the second hinge rod.

[0016] Preferably, a torsion spring is fixedly connected between the bottom of the hinge rod 2 and the side of the side plate, and a torsion spring 2 is fixedly connected between the bottom of the hinge rod 1 and the side of the bearing seat 1. The elastic strength of the torsion spring 2 is much greater than that of the return spring.

[0017] The beneficial effects of this invention are as follows: 1. The automatic leveling and shearing device for cable tray plates of the present invention uses a flattening component to drive a pressure plate downward before the cutting blade rises to shear, applying a uniform clamping force from the upper surface of the plate to pre-press the cable tray plate with warped or arched deformation onto the support plate, eliminating the wavy deformation of the plate itself and completing the leveling operation before shearing; at the same time, the upper and lower clamping action of the pressure plate and the support plate forms a preliminary limiting constraint on the plate, restricting large-scale lateral displacement during the plate shearing process and improving the positioning accuracy of the plate shearing operation.

[0018] 2. The automatic leveling and shearing device for cable tray plates of the present invention uses a locking assembly to lock the pressure plate and the worktable into a rigid whole after the pressure plate is pressed down into place, cutting off the upward floating motion freedom of the pressure plate; when the cutting tool cuts the plate from bottom to top and generates an upward pushing force, the rigid locking structure counteracts the reverse pushing force brought by the tool, avoiding the phenomenon of the pressure plate being lifted up by the plate and becoming slightly loose, thus preventing the plate from shearing springback and secondary warping from the root, ensuring that the plate leveling effect does not fail, and ultimately improving the processing accuracy of the sheared section and the forming quality of the plate surface.

[0019] 3. The automatic leveling and shearing device for cable tray plates of the present invention, through the disassembly of components, the inclined surfaces of wedge block one and wedge block two cooperate for transmission, and are matched with stop support rod, resisting arc rod and torsion spring one and torsion spring two for limiting and elastic force matching. During the upward shearing stage of the cutter, unlocking will not be triggered. Only when the cutter falls back to reset will it drive the positioning plate to deflect outward to release the rigid lock of the pressure plate. At the same time, wedge block one can flip to avoid during the upward movement to ensure that the cutter stroke is not obstructed. After unlocking, the positioning plate can automatically rotate back to reset and wait for the next operation by relying on torsion spring two. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional view of the entire invention; Figure 2 This is a schematic diagram of the structure of the workbench in this invention; Figure 3 This is a schematic diagram of the structure of the cutting tool in this invention; Figure 4 This is a schematic diagram of the internal structure of the protective chamber in this invention; Figure 5 This is a schematic diagram of the structure of the pressure plate in this invention; Figure 6 This is a schematic diagram of the trapezoidal block structure in this invention; Figure 7 This is a schematic diagram of the structure of the card slot plate in this invention; Figure 8 This is a schematic diagram of the bearing housing structure in this invention; Figure 9 This is a schematic diagram of the structure at the wedge-shaped block in this invention.

[0022] In the diagram: 1. Workbench; 2. Base support; 3. Cutting tool; 4. Telescopic rod one; 5. Support plate; 6. Press plate; 7. Cutting slit; 8. Fixture plate; 9. Inner slider; 10. Limiting slide; 11. Telescopic rod two; 12. T-shaped bracket; 13. Plug-in seat; 14. Plug-in rod; 15. Buffer spring; 16. Protective chamber; 17. Rack plate one; 18. Gear; 19. Rack plate two; 20. Fixed seat; 21. Return spring; 22. Trapezoidal block one; 23. Positioning plate; 24. Trapezoidal block two; 25. Trapezoidal groove; 26. Bearing seat one; 27. Hinge rod one; 28. Side plate; 29. ​​Bearing seat two; 30. Hinge rod two; 31. Wedge block one; 32. Wedge block two; 33. Resistance arc rod; 34. Torsion spring one; 35. Stop support rod; 36. Torsion spring two. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 9 As shown, the present invention provides a technical solution: an automatic leveling and shearing device for cable tray plates, including a workbench 1, a base support 2 symmetrically fixedly connected to the bottom of the workbench 1, a cutting blade 3 arranged at the center of the bottom of the workbench 1, a lifting assembly that can drive the cutting blade 3 to rise and fall above the base support 2, two support plates 5 slidably connected to the inner wall of the workbench 1, multiple telescopic rods 4 fixedly connected to the bottom of the workbench 1, the output end of the telescopic rods 4 fixedly connected to the bottom of the support plates 5, a slit 7 arranged between the two support plates 5, a flattening assembly arranged on the top of the workbench 1, the flattening assembly including a pressing plate 6, the pressing plate 6 can press and clamp the plate between the pressing plate 6 and the support plates 5 by descending, a locking assembly is arranged between the upper surface of the pressing plate 6 and the side of the workbench 1, the locking assembly can completely lock and bind the pressing plate 6 in a position that is in contact with the workbench 1.

[0025] During operation: Place the cable tray sheet to be cut on the upper surface of the two support plates 5; according to the actual thickness of the sheet, activate the telescopic rod 4, which drives the support plate 5 to slide up and down along the inner wall of the workbench 1, thereby changing the support height of the support plate 5 to ensure that the upper surface of the sheet is flush with the table surface of the workbench 1, completing the height alignment of the sheet; after alignment, activate the lifting assembly above the base bracket 2, which drives the cutting blade 3 to move upward from its initial position; during the initial stage of the cutting blade 3's upward movement, the flattening assembly simultaneously drives the pressing plate 6 to move downward, and the cutting blade... 3. When the cutting blade continues to rise and has not yet inserted into the slit 7 between the two support plates 5, the pressure plate 6 has been fully pressed down into place, closely adhering to the surface of the workbench 1, firmly pressing the plate into the leveling position, and completely flattening the warped and deformed parts of the plate; then the cutting blade 3 continues to rise, first inserting into the slit 7, and then performing a bottom-up penetrating shearing operation on the cable tray plate sandwiched between the support plate 5 and the pressure plate 6; relying on the limiting constraint of the upper and lower bidirectional clamping, the plate remains flat and taut throughout the entire cutting process, without displacement, warping or bending, ensuring that the cutting trajectory is straight and regular; Because the metal sheets used in cable trays generally exhibit warping or deformation after undergoing multiple processes such as uncoiling, conveying, and transfer, when the cutting tool 3 contacts the bottom surface of the sheet for shearing, an upward pushing shearing force is applied. This force easily lifts the sheet, which in turn pushes the pressure plate 6 upward, causing it to lift slightly and loosen. This results in the previously leveled sheet warping, shifting, and springback deformation, leading to skewed cuts and reduced flatness, making it difficult to guarantee processing accuracy. When the pressure plate 6 descends to fit against the surface of the worktable 1, and the sheet is leveled and pressed by the bidirectional clamping mechanism, the pressure plate 6 is precisely engaged. The locking mechanism forms a rigid, locked structure between the pressure plate 6 and the worktable 1, restricting the vertical movement and upward displacement of the pressure plate 6. This maximizes the resistance to the upward shearing force generated by the cutting blade 3, ensuring that the board remains compacted, leveled, and fixed throughout the shearing process. This prevents secondary warping and loosening of the board during shearing, achieving high-precision cutting of the board under leveled and pressure-holding conditions. After the board is sheared, the lifting assembly drives the cutting blade 3 to retract downwards, completely exiting the kerf 7 and returning to its initial position below the worktable 1. The locking assembly releases the locking of the pressure plate 6, and the flattening assembly lifts the pressure plate 6 upwards to reset it. The worker can then remove the cut board. In the above embodiment, the flattening assembly drives the pressing plate 6 downward before the cutting blade 3 rises to shear, applying a uniform clamping force from the upper surface of the plate to pre-press the cable tray plate with warped or arched deformation onto the support plate 5, eliminating the wavy deformation of the plate itself and completing the leveling operation before shearing. At the same time, the clamping action between the pressing plate 6 and the support plate 5 forms a preliminary limiting constraint on the plate, restricting large-scale lateral displacement during the plate shearing process and improving the positioning accuracy of the plate shearing operation. Through the locking assembly, after the pressing plate 6 is pressed down into place, the pressing plate 6 and the worktable 1 are locked together as a rigid whole, cutting off the upward floating motion freedom of the pressing plate 6. When the cutting blade 3 shears the plate from bottom to top and generates an upward pushing force, the rigid locking structure counteracts the reverse pushing force brought by the blade, preventing the pressing plate 6 from being lifted by the plate and becoming slightly loose, thus preventing the plate from shearing springback and secondary warping from the root, ensuring that the plate leveling effect is not lost, and ultimately improving the processing accuracy of the shearing section and the forming quality of the plate surface.

[0026] like Figures 2 to 3As shown, the lifting assembly includes a clamping plate 8, which is fixedly connected to the outer wall of the cutting tool 3. Inner sliders 9 are fixedly connected to both sides of the clamping plate 8. Limiting slides 10 are fixedly connected to the top of the base bracket 2. The inner sliders 9 are slidably connected to the inner wall of the limiting slides 10. Telescopic rods 11 are fixedly connected to the top inner wall of the limiting slides 10. The output end of the telescopic rods 11 is fixedly connected to the top of the inner sliders 9.

[0027] During operation: When the cutting tool 3 needs to be driven to rise for cutting, the two telescopic rods 11 retract synchronously, pushing the inner slider 9 to slide vertically upward along the inner wall of the limiting slide 10. The limiting slide 10 provides lateral constraint and guidance for the inner slider 9, preventing the inner slider 9 from shifting left or right during the lifting and lowering process. As the inner slider 9 moves upward, it drives the clamping plate 8 and the cutting tool 3 fixed on the clamping plate 8 to rise smoothly as a whole. The cutting tool 3 moves upward along the vertical trajectory, passes through the slit 7 between the two supporting plates 5, and thus completes the bottom-up shearing of the board. When it is necessary to reset, the telescopic rods 11 can be extended again.

[0028] like Figure 4 As shown, the flattening assembly includes multiple insertion seats 13, all of which are fixedly connected to the upper two sides of the pressing plate 6. Insertion rods 14 are inserted into the inner wall of the pressing plate 6, and the bottom of each insertion rod 14 is fixedly connected to the top of the pressing plate 6. Buffer springs 15 are fixedly connected between the surface of the pressing plate 6 and the bottom of each insertion seat 13. Gear assemblies that drive the insertion seats 13 to move downwards are provided on both sides of the pressing plate 6.

[0029] During operation: When the cutting blade 3 rises, it synchronously drives the insertion seats 13 on both sides of the pressure plate 6 to move downwards via the gear assembly. The insertion seats 13, through the insertion rod 14, synchronously drive the pressure plate 6 downwards until the lower surface of the pressure plate 6 is in contact with the surface of the worktable 1. At this point, the cutting blade 3 has not yet contacted the material. The pressure plate 6 presses the material down to the leveling position, completing the pre-pressing and warping correction of the material. As the cutting blade 3 continues to feed upwards, the insertion seats 13, driven by the gear assembly, continue to move downwards. The pressure plate 6, blocked by the material and the worktable 1, cannot continue to descend, and a phase is generated between the insertion seats 13 and the insertion rod 14. For sliding, the buffer spring 15 is further compressed, and the deformation of the buffer spring 15 absorbs the remaining downward stroke of the plug seat 13. Due to the presence of the buffer spring 15, when the cutting tool 3 applies an upward shearing force to the plate, the pushing force generated by the tool may force the pressure plate 6 to overcome the elastic force of the buffer spring 15 and move upward slightly, causing the plate to fail to be pressed and the already leveled plate surface to warp and spring back again. Therefore, the locking component is activated in time after the pressure plate 6 is pressed down to the position, and the pressure plate 6 is rigidly bound to the worktable 1 as one unit, thereby offsetting the upward pushing force of the tool during the shearing process, so that the plate remains in a stable pressed and leveled state throughout the shearing process.

[0030] like Figure 4 As shown, the gear assembly includes two protective chambers 16, which are fixedly connected to both sides of the workbench 1. A rack plate 17 is fixedly connected to the upper sides of both sides of the clamping plate 8. Gears 18 are rotatably connected to the inner walls of the protective chambers 16. The teeth of the rack plate 17 mesh with the teeth of the gears 18. A T-shaped bracket 12 is fixedly connected between the plug-in seats 13 on the same side. A rack plate 2 19 is fixedly connected to the lower side of the T-shaped bracket 12. The rack plate 2 19 also meshes with the teeth of the gears 18. Both the rack plate 17 and the rack plate 2 19 are slidably connected to the inner walls of the protective chambers 16.

[0031] During operation: The protective chamber 16 provides protection and limit guidance for the internal gear 18, rack plate 17, and rack plate 19, ensuring stable operation of the transmission structure and preventing dust accumulation and jamming; when the lifting assembly moves the clamp plate 8 and the cutting tool 3 upward as a whole, the rack plates 17 on both sides of the clamp plate 8 move upward synchronously. The rack plates 17 slide vertically along the inner wall of the protective chamber 16 and drive the gear 18 to rotate inside the protective chamber 16 through tooth meshing; during the rotation of the gear 18, the rack plate 19 moves vertically downward through tooth meshing on the other side. The rack plate 19 synchronously drives the top T-shaped bracket 12 to move downward as a whole, causing the insertion seats 13 at both ends of the T-shaped bracket 12 to move downward synchronously, and then drive the pressure plate 6 to press the plate downward through the insertion rod 14.

[0032] like Figures 5 to 7As shown, the engaging assembly includes multiple fixing seats 20, which are fixedly connected to the upper two sides of the pressure plate 6. A trapezoidal block 22 is inserted into one side of each fixing seat 20. A return spring 21 is fixedly connected between the trapezoidal block 22 and the side of the fixing seat 20. A locking plate 23 is provided on both sides of the protective chamber 16. A trapezoidal block 24 is fixedly connected to one side of each locking plate 23. A trapezoidal groove 25 is provided below each trapezoidal block 24. The trapezoidal groove 25 and the trapezoidal block 22 engage with each other.

[0033] During operation: When the pressure plate 6 moves downward under the transmission of the gear assembly, the fixed seats 20 on both sides above the pressure plate 6 move downward synchronously, thereby driving the trapezoidal block 22 mounted on one side of the fixed seat 20 to move downward as a whole. The trapezoidal block 22 slides vertically along the inner side of the locking plate 23. During the continuous downward movement, the bottom inclined surface of the trapezoidal block 22 comes into contact with and presses against the top inclined surface of the trapezoidal block 24 on the locking plate 23. Relying on the guiding effect of the inclined surface, the trapezoidal block 22 compresses the return spring 21 after being subjected to force, causing it to retract towards the inner side of the fixed seat 20 to avoid the obstruction position of the trapezoidal block 24. Then, the trapezoidal block 22 continues to slide downward along the inner side of the locking plate 23 until it reaches the locking position of the trapezoidal groove 25. At this time, the trapezoidal block 22 is no longer subjected to the pressing force, and the return spring 21 is released. The elastic potential energy is released and the trapezoidal block 22 is pushed outward, so that the trapezoidal block 22 is locked into the trapezoidal groove 25. At the moment the locking is completed, the pressure plate 6 just descends to the limit position where it is completely in contact with the surface of the worktable 1, thus realizing the locking after the pressure plate 6 is pressed down. Since the surface of the trapezoidal groove 25 and the top of the trapezoidal block 22 are in contact is flat, when the pressure plate 6 is subjected to the reverse force of the upward shearing and pushing from the cutting tool 3, the top surface of the trapezoidal block 22 can be tightly fitted and pressed against the top surface of the trapezoidal groove 25, resisting the upward pushing force generated during the shearing process to the greatest extent, preventing the pressure plate 6 from floating, loosening and retreating under force, ensuring that the pressing and leveling effect of the pressure plate 6 on the board is continuously effective, and structurally eliminating the phenomenon of board shearing springback and secondary warping.

[0034] like Figures 5 to 7 As shown, bearing seats 26 are fixedly connected to both sides of the protective chamber 16. The bottom end of the positioning plate 23 is fixedly connected to the outer wall of the shaft of the bearing seat 26. A hinge rod 27 is also fixedly connected to the outer wall of the shaft of the bearing seat 26. The hinge rod 27 and the positioning plate 23 are kept perpendicular to each other. A disassembly assembly that drives the hinge rod 27 to rotate downward is provided on one side of the hinge rod 27.

[0035] During operation: After the cutting blade 3 completes its upward cutting motion, it needs to move downwards to reset. During the reset process, the disassembly assembly drives the hinge rod 27 to rotate downwards around the shaft of the bearing seat 26. Since the hinge rod 27 and the locking plate 23 are fixed perpendicularly to each other, the hinge rod 27 will simultaneously drive the locking plate 23 to deflect outwards around the shaft of the bearing seat 26 while rotating downwards. This causes the locking plate 23, trapezoidal block 24, and trapezoidal groove 25 to disengage from the locking limit state of trapezoidal block 22. At this time, trapezoidal block 22 loses its lateral locking constraint, the locking effect of the locking assembly is automatically released, the pressure plate 6 is no longer rigidly fixed, and can be lifted upwards and reset with the gear transmission structure, smoothly releasing the processed plate and completing the single shearing unlocking and reset process. This provides reliable structural reset conditions for the next plate pressing, locking, and shearing operation cycle.

[0036] like Figures 5 to 6 As shown, the disassembled assembly includes a side plate 28, which is fixedly connected to one side of the rack plate 17. The inner side of the side plate 28 is symmetrically fixedly connected to a bearing seat 29. The outer wall of the shaft of the bearing seat 29 is fixedly connected to a hinge rod 30. A wedge block 31 is fixedly connected to one side of the hinge rod 30. A wedge block 32 is fixedly connected to the end of the hinge rod 27 away from the bearing seat 26. The wedge block 32 and the wedge block 31 correspond to each other.

[0037] During operation: As rack plate 17 rises synchronously with cutting tool 3, it drives side plate 28, bearing seat 29, hinge rod 30, and wedge block 31 to move upward as a whole. During its ascent, wedge block 31 gradually approaches wedge block 32 at the end of hinge rod 27. After contact, the inclined surface of wedge block 31 fits against the bottom inclined surface of wedge block 32. As cutting tool 3 continues to feed upward, wedge block 32 remains stationary, and wedge block 31, blocked by it, is forced to rotate downward around the axis of bearing seat 29 to avoid it. As rack plate 17 continues to rise, wedge block 31 passes over wedge block 32 and moves above it, releasing the pressure from the inclined surface. After the external force is removed... Driven by the torsion spring 34, wedge block 31 rotates and resets, so that its bottom end face fits against the top end face of wedge block 32. When rack plate 17 falls down and resets along with cutting tool 3, wedge block 31 moves down synchronously and exerts downward pressure on the top of wedge block 32, thereby forcing wedge block 32 to drive hinge rod 27 to rotate downwards and hinge around the shaft of bearing seat 26, which in turn drives the locking plate 23 to deflect outwards, so that trapezoidal groove 25 moves outwards synchronously with locking plate 23 and gets out of the locking range of trapezoidal block 22, completely releasing the rigid locking of the locking assembly on the pressure plate 6. After the pressure plate 6 loses its locking constraint, it can be lifted up and reset with the gear transmission structure.

[0038] like Figures 8 to 9As shown, both sides of the protective chamber 16 are fixedly connected with stop rods 35, and the outer wall of the stop rods 35 is in contact with the top of the hinge rod 27.

[0039] During operation: The stop rod 35 can rigidly limit the hinge rod 27 and the wedge block 32 at the end, restricting its upward hinge rotation around the shaft of bearing seat 26; when the wedge block 31 moves upward with the cutting tool 3, and the inclined surface contacts the bottom inclined surface of the wedge block 32 and continues to rise, the wedge block 32 cannot flip upward to avoid the obstacle due to the limit block 35, and the force state remains fixed; at this time, the upward pressing force will directly act on the movable wedge block 31, forcing the wedge block 31 to hinge downward around the shaft of bearing seat 29, actively completing the avoidance action, and preventing the wedge block 32 from flipping under force, causing the unlocking mechanism to act prematurely and the locking to fail.

[0040] like Figures 8 to 9 As shown, each of the side plates 28 has a symmetrically fixed anti-blocking arc rod 33 on its top, and one end of the anti-blocking arc rod 33 is attached to the top of the hinge rod 30.

[0041] During operation: The resisting arc rod 33 restricts the upward hinge rotation of the second hinge rod 30 and the first wedge block 31 on the axis of the second bearing seat 29. Thus, when the bottom plane of the first wedge block 31 is in contact with the top plane of the second wedge block 32 and is preparing to follow the cutting tool 3 to descend and reset, the top of the second hinge rod 30 is rigidly blocked by the resisting arc rod 33, and the first wedge block 31 cannot flip upward to avoid it; this forces the second wedge block 32 to drive the first hinge rod 27 to flip downward on the axis of the first bearing seat 26, triggering the locking plate 23 to deflect outward, thus completing the unlocking action of the locking assembly.

[0042] like Figures 8 to 9 As shown, a torsion spring 34 is fixedly connected between the bottom of the hinge rod 20 and the side of the side plate 28, and a torsion spring 36 is fixedly connected between the bottom of the hinge rod 27 and the side of the bearing seat 26. The elastic strength of the torsion spring 36 is much greater than that of the return spring 21.

[0043] During operation: The elastic strength of torsion spring 26 is much greater than that of return spring 21. When trapezoidal block 22 descends and contacts and presses against the inclined surface of trapezoidal block 24, the pressing force is insufficient to overcome the torque of torsion spring 26 and drive the locking plate 23 to deflect outward. Trapezoidal block 22 preferentially overcomes the elastic force of return spring 21 and retracts inward to avoid it, smoothly passing over trapezoidal block 24 until it descends to the position of trapezoidal groove 25. Then, return spring 21 ejects trapezoidal block 22 outward to complete the locking. Torsion spring 34 can provide rotational return elasticity for hinge rod 20 and wedge block 31. Driving force; after wedge block 31 passes over wedge block 32 and the external force is released, torsion spring 34 can drive hinge rod 30 to rotate and reset, so that the bottom end face of wedge block 31 fits against the top end face of wedge block 32; torsion spring 36 continuously applies an inward rotational reset torque to the locking plate 23. After the unlocking action is completed, it can drive the locking plate 23 to automatically rotate inward and return to its original position, so that the trapezoidal groove 25 returns to the ready locking position, preparing for the next round of pressing plate 6 to press down and lock.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic leveling and shearing device for cable tray plates, comprising a worktable, characterized in that: The bottom of the workbench is symmetrically and fixedly connected to a base support. A cutting blade is located at the center of the bottom of the workbench. A lifting assembly that can drive the cutting blade to rise and fall is located above the base support. Two support plates are slidably connected to the inner wall of the workbench. Multiple telescopic rods are fixedly connected to the bottom of the workbench. The output end of the telescopic rod is fixedly connected to the bottom of the support plate. A slit is provided between the two support plates. A flattening assembly is provided on the top of the workbench. The flattening assembly includes a pressure plate. The pressure plate can press and clamp the sheet material between the pressure plate and the support plate by lowering it. A locking assembly is provided between the upper surface of the pressure plate and the side of the workbench. The locking assembly can completely lock and bind the pressure plate in a position that fits against the workbench.

2. The automatic leveling and shearing device for cable tray plates according to claim 1, characterized in that: The lifting assembly includes a clamping plate, which is fixedly connected to the outer wall of the cutting tool. Inner sliders are fixedly connected to both sides of the clamping plate. Limiting slides are fixedly connected to the top of the base bracket. The inner sliders are slidably connected to the inner wall of the limiting slides. Telescopic rods are fixedly connected to the top inner wall of the limiting slides. The output end of the telescopic rods is fixedly connected to the top of the inner sliders.

3. The automatic leveling and shearing device for cable tray plates according to claim 2, characterized in that: The flattening assembly includes multiple connectors, all of which are fixedly connected to the upper sides of the flattening plate. Connecting rods are inserted into the inner wall of the flattening plate, and the bottom of each connecting rod is fixedly connected to the top of the flattening plate. Buffer springs are fixedly connected between the surface of the flattening plate and the bottom of each connector. Gear assemblies that drive the connectors to move downwards are provided on both sides of the flattening plate.

4. The automatic leveling and shearing device for cable tray plates according to claim 3, characterized in that: The gear assembly includes two protective chambers, which are fixedly connected to both sides of the workbench. A rack plate is fixedly connected to the upper sides of both sides of the clamping plate. Gears are rotatably connected to the inner walls of the protective chambers. The teeth of the rack plate mesh with the teeth of the gears. A T-shaped bracket is fixedly connected between the plug-in seats on the same side. A rack plate is fixedly connected to the lower side of the T-shaped bracket. The rack plate also meshes with the teeth of the gears. Both rack plates are slidably connected to the inner walls of the protective chambers.

5. The automatic leveling and shearing device for cable tray plates according to claim 4, characterized in that: The locking assembly includes multiple fixing seats, which are fixedly connected to the upper two sides of the pressure plate. A trapezoidal block 1 is inserted into one side of each fixing seat. A return spring is fixedly connected between the trapezoidal block 1 and the side of the fixing seat. A locking plate is provided on both sides of the protective chamber. A trapezoidal block 2 is fixedly connected to one side of each locking plate. A trapezoidal groove is provided below each trapezoidal block 2. The trapezoidal groove and the trapezoidal block 1 are locked together.

6. The automatic leveling and shearing device for cable tray plates according to claim 5, characterized in that: Both sides of the protective compartment are fixedly connected to bearing seats. The bottom end of the positioning plate is fixedly connected to the outer wall of the shaft of bearing seat one. The outer wall of the shaft of bearing seat one is also fixedly connected to a hinge rod one. The hinge rod one is perpendicular to the positioning plate. One side of the hinge rod one is provided with a disassembly assembly that drives it to rotate downwards by hinge.

7. The automatic leveling and shearing device for cable tray plates according to claim 6, characterized in that: The disassembled assembly includes a side plate, which is fixedly connected to one side of the rack plate. The inner side of the side plate is symmetrically fixedly connected to a bearing seat 2. The outer wall of the shaft of the bearing seat 2 is fixedly connected to a hinge rod 2. A wedge block 1 is fixedly connected to one side of the hinge rod 2. A wedge block 2 is fixedly connected to the end of the hinge rod 1 away from the bearing seat 1. The wedge block 2 corresponds to the wedge block 1.

8. The automatic leveling and shearing device for cable tray plates according to claim 7, characterized in that: Both sides of the protective compartment are fixedly connected with stop rods, and the outer wall of the stop rods fits against the top of the hinge rod.

9. The automatic leveling and shearing device for cable tray plates according to claim 8, characterized in that: The top of each side plate is symmetrically fixed with a resisting arc rod, one end of which is attached to the top of the hinge rod two.

10. The automatic leveling and shearing device for cable tray plates according to claim 9, characterized in that: A torsion spring is fixedly connected between the bottom of hinge rod 2 and the side of the side plate, and a torsion spring is fixedly connected between the bottom of hinge rod 1 and the side of bearing seat 1. The elastic strength of torsion spring 2 is much greater than that of the return spring.

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