A lift table guide rail cutting apparatus

Abstract

The application discloses a lifting platform guide rail cutting equipment and relates to the technical field of cutting.The lifting platform guide rail cutting equipment comprises a carrier and a cutting frame, a loading area and a feeding area are arranged in the carrier, a lifting plate is arranged in the loading area, a plurality of driven supporting rollers are rotatably arranged in the feeding area, a power area and a cutting area are arranged on the cutting frame, a first distance adjusting plate and a second distance adjusting plate are arranged in the power area, a plurality of driving supporting rollers are arranged on the first distance adjusting plate and the second distance adjusting plate, a laser cutting head is fixedly arranged in the cutting area, a blowing assembly is arranged on the side of the laser cutting head, and the blowing assembly is fixedly connected with a partition plate.The lifting platform guide rail cutting equipment realizes automatic material distribution, accurate feeding, rotary cutting and full-process operation of fixed-point slag blowing, effectively solves the problems of poor consistency of manual feeding and slag splashing pollution, and significantly improves the cutting quality, the production efficiency and the equipment operation stability.

Description

Technical Field

[0001] This invention relates to the field of cutting technology, and specifically discloses a lifting platform guide rail cutting device. Background Technology

[0002] In construction, industrial warehousing, and logistics sorting, lifting platforms are key equipment for the vertical transport of goods or personnel. The smooth lifting and precise stopping of the platform highly depend on the manufacturing precision and structural rigidity of the guide rail system. Steel pipe guide rails, as typical guiding and load-bearing components, fully utilize the excellent bending cross-sectional characteristics and surface wear resistance of steel pipe profiles to provide precise guidance for the lifting platform's lifting motion and withstand bending moments and impact loads caused by eccentric loading. In mass production, long sections of steel pipe must be efficiently and precisely cut to specified lengths, with clean cuts and no significant deformation. This process constitutes the core of guide rail manufacturing.

[0003] Existing steel pipe guide rail cutting technology is insufficient to meet the above requirements, exhibiting two major drawbacks: reliance on manual adjustment in the material preparation process and disorderly splashing of molten slag. Firstly, during material preparation, operators must repeatedly lift and move the steel pipes, manually feed them, and continuously measure and adjust their lateral position. This is labor-intensive, time-consuming, and makes it difficult to guarantee consistent material feeding, often leading to cumulative errors in the length of multiple guide rails, severely weakening assembly interchangeability and fitting accuracy. Secondly, under laser cutting conditions, high-density energy causes the material to melt and vaporize instantly, generating a large amount of high-temperature, high-pressure molten metal slag and fumes, which splash violently under the influence of auxiliary gas. Because conventional equipment generally lacks fixed-point purging and collection devices that move with the torch, large amounts of molten slag escape and permeate the workshop, polluting the working environment, endangering the respiratory health of operators, and continuously adhering to the cutting head protective lens, transmission screw, and guide rail surface, causing focus drift and movement jamming. This necessitates frequent shutdowns for cleaning, significantly shortening the equipment's stable operating cycle. Summary of the Invention

[0004] In view of the current problems in the cutting of steel pipe guide rails of lifting platforms, such as poor material consistency and environmental pollution caused by the lack of automated and precise feeding and slag blowing mechanisms, this invention provides a cutting device for lifting platform guide rails.

[0005] To address the above problems, the present invention provides the following technical solution: A lifting platform guide rail cutting device includes a carrier frame and a cutting frame. The carrier frame has a loading area and a feeding area. The loading area is used to support steel pipe guide rails. A lifting plate is installed in the loading area to move the steel pipe guide rails from the loading area to the feeding area. Multiple driven support rollers are rotatably installed in the feeding area to provide rolling support for the steel pipe guide rails. A partition is fixedly installed in the middle of the cutting frame, dividing the cutting frame into a power area and a cutting area. A first adjusting plate and a cutting plate are provided in the power area. The second adjusting plate has an adjustable distance between it and the first adjusting plate. Both the first and second adjusting plates are equipped with multiple active support rollers, which are used to drive the steel pipe guide rail to move laterally. A laser cutting head is fixedly installed in the cutting area. The side of the laser cutting head is provided with a blowing assembly, which is fixedly connected to the partition. Its air outlet faces the cutting focal area of ​​the laser cutting head and is used to spray gas towards the cutting position to blow away molten slag. A discharge channel is also provided in the cutting area.

[0006] Preferably, the carrier frame is provided with a bottom beam and a top beam. The bottom beam and the top beam are both located in the material loading area and are arranged obliquely. A material blocking beam is fixedly provided on the side of the bottom beam near the material feeding area. A vertical plate is fixedly installed on the top beam. A first cylinder is fixedly installed on the bottom beam. The first cylinder is arranged obliquely and its piston rod is tightly connected to the lifting plate.

[0007] Preferably, a support beam is provided inside the carrier frame, and the driven support rollers are all installed on the support beam. A connecting seat is fixedly installed at the bottom of the support beam, and a threaded long rod is hinged to the bottom side of the connecting seat. The threaded long rod is threadedly engaged with the crossbeam inside the carrier frame, and a handwheel is fixedly installed at the bottom end of the threaded long rod.

[0008] Preferably, a first bottom rail is fixedly installed in the power zone, perpendicular to the steel pipe guide rail. A first slider, a second slider, a third slider, and a fourth slider are slidably installed on the first bottom rail. The first slider and the fourth slider are respectively fastened to a first action plate and a second action plate. The first adjustment plate and the second adjustment plate are respectively fastened to the second slider and the third slider. The first action plate is fastened to the cutting frame through a first support. A second cylinder is fixedly installed on the cutting frame. A second support is fixedly installed at the end of the piston rod of the second cylinder. The second support is fastened to the second action plate. A third cylinder and a fourth cylinder arranged opposite to each other are fixedly installed on the first action plate and the second action plate. The piston rods of the third cylinder and the fourth cylinder are respectively fastened to the first adjustment plate and the second adjustment plate. A shaft seat is fixedly installed on both the first adjustment plate and the second adjustment plate. A shaft for assembling the active support roller is rotatably installed on each shaft seat.

[0009] Preferably, a first motor is fixedly installed inside the second action plate, the output shaft of the first motor is arranged facing upward and a first pulley is fastened on it, and a second pulley is fastened on the periphery of each shaft on the second adjustment plate, and a first belt for transmission is fitted between the first pulley and the second pulley.

[0010] Preferably, a third support is provided between the first adjusting plate and the second adjusting plate, and a photoelectric sensor for detecting the passage of the steel pipe guide rail is fixedly installed on the top of the third support. The height of the photoelectric sensor is lower than that of the steel pipe guide rail.

[0011] Preferably, a fourth support is provided on the side of the partition plate within the power zone. The fourth support is fastened to the cutting frame. A collar for the passage of the steel pipe guide rail is provided between the fourth support and the partition plate. One end of the collar is rotatably engaged with the partition plate. Multiple circumferentially arranged arc-shaped clamping blocks are provided on the inner side of the collar. Each arc-shaped clamping block is connected to an adjusting rod, and the adjusting rod is threadedly engaged with the collar.

[0012] Preferably, a second motor is fixedly installed on the cutting frame, a third pulley is fitted on the output shaft of the second motor, a fourth pulley is fastened to the periphery of the collar, and a second belt for transmission is fitted between the third pulley and the fourth pulley.

[0013] Preferably, a cantilever frame is fixedly installed on the cutting frame, and a suspension plate is fixedly installed on the side of the top of the cantilever frame, and the suspension plate is tightly connected to the outer shell of the laser cutting head.

[0014] Preferably, the purging assembly includes a fifth support that is fastened to the partition plate. A ball screw assembly is mounted on the fifth support. A sliding plate is fixedly mounted on the sliding output end of the ball screw assembly. A second bottom rail and a fifth cylinder are fixedly mounted on the sliding plate. A fifth slider is slidably mounted on the second bottom rail. The fifth slider is fastened to the piston rod of the fifth cylinder. A locking seat is fixedly mounted on the fifth slider. An air supply cylinder is securely fitted inside the locking seat. An air supply rod is fixedly mounted on the air outlet end of the air supply cylinder. A purging head is fixedly mounted on the head of the air supply rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention, through the coordinated layout of the inclined bottom beam, top beam, and retaining beam in the material loading area within the carrier frame, combined with the inclined lifting action of the lifting plate driven by the first cylinder, realizes a fully automated process in which the steel pipe guide rails automatically gather by gravity, separate individually in an orderly manner, and smoothly transfer to the feeding area. This completely replaces the manual operation mode of repeatedly lifting and feeding one piece at a time, significantly reducing labor intensity, while ensuring the continuity and uniformity of material supply, providing a reliable prerequisite for subsequent efficient cutting.

[0016] 2. This invention employs a structural design with a fixed reference side and multi-stage adjustable distance on the movable side within the power zone of the cutting frame. A second cylinder enables a wide-range coarse adjustment of the second adjusting plate, while a third and fourth cylinder perform counter-clockwise fine-tuning, allowing the active support rollers on both sides to perform stepless and precise clamping according to different pipe diameters. A servo motor drives the active support rollers to rotate via a synchronous belt, achieving precise control of the feed amount for each operation. Simultaneously, a photoelectric sensor detects the steel pipe's arrival signal and feeds it back to the PLC controller, forming a closed loop. This eliminates random length errors caused by manual measurement and manual feeding, ensuring high consistency and interchangeability of the length of the batch cutting guide rails.

[0017] 3. This invention integrates a follow-up blowing assembly around the laser cutting head within the cutting zone. The ball screw assembly, in conjunction with the fifth cylinder, enables the blowing head to precisely align with the slag-generating area based on changes in the steel pipe diameter and the cutting focal point. A high-speed, directional jet powerfully removes the high-temperature slag. Combined with an inclined discharge channel coated with a wear-resistant inner layer, this achieves sealed collection and directional discharge of the slag, effectively preventing slag splashing and environmental pollution, as well as adhesion to the protective lens and transmission components. Simultaneously, the rotatable collar structure ensures stable rotation of the steel pipe throughout the entire cutting process, allowing the blowing action to cover the entire cutting stroke, significantly extending the continuous operating cycle of the equipment and reducing the frequency of downtime for cleaning. Attached Figure Description

[0018] To more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall device structure of the present invention; Figure 2 This is a schematic diagram of the carrier structure of the present invention; Figure 3 This is a schematic diagram of the bottom beam installation structure of the present invention; Figure 4 This is a schematic diagram of the support beam installation structure of the present invention; Figure 5 This is a schematic diagram of the driven support roller mounting structure of the present invention; Figure 6 This is a schematic diagram of the cutting frame mounting structure of the present invention; Figure 7 This is a schematic diagram of the installation structure of the first and second adjusting plates of the present invention; Figure 8 This is a schematic diagram of the photoelectric sensor mounting structure of the present invention; Figure 9 This is a schematic diagram of the active support roller mounting structure of the present invention; Figure 10 This is a schematic diagram of the collar mounting structure of the present invention; Figure 11 This is a schematic diagram of the laser cutting head mounting structure of the present invention; Figure 12 This is a schematic diagram of the specific structure of the purging assembly of the present invention; In the diagram: 1. Carrier frame, 2. Cutting frame, 3. Steel pipe guide rail, 4. Lifting plate, 5. Driven support roller, 6. Partition plate, 7. First adjusting plate, 8. Second adjusting plate, 9. Active support roller, 10. Laser cutting head, 11. Blowing assembly, 1101. Fifth support, 1102. Ball screw assembly, 1103. Slide plate, 1104. Second bottom rail, 1105. Fifth cylinder, 1106. Fifth slider, 1107. Locking seat, 1108. Air supply cylinder, 1109. Air supply rod, 1110. Blowing head. 12. Discharge channel; 13. Bottom beam; 14. Top beam; 15. Stop beam; 16. Vertical plate; 17. First cylinder; 18. Support beam; 19. Connecting seat; 20. Threaded rod; 21. Handwheel; 22. First bottom rail; 23. First slider; 24. Second slider; 25. Third slider; 26. Fourth slider; 27. First action plate; 28. Second action plate; 29. ​​First support; 30. Second cylinder; 31. Second support. 32. Third cylinder, 33. Fourth cylinder, 34. Shaft seat, 35. Shaft, 36. First motor, 37. First pulley, 38. Second pulley, 39. First belt, 40. Third support, 41. Photoelectric sensor, 42. Fourth support, 43. Collar, 44. Arc-shaped clamp, 45. Adjusting rod, 46. Second motor, 47. Third pulley, 48. Fourth pulley, 49. Second belt, 50. Cantilever frame, 51. Suspension plate. Detailed Implementation

[0019] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0020] This specific embodiment provides a lifting platform guide rail cutting device, such as... Figures 1-12 As shown, the machine adopts a modular and partitioned design, mainly composed of two parts: the carrier frame 1 and the cutting frame 2. The carrier frame 1, as the execution unit for raw material storage and primary conveying, is located on the upstream side of the whole machine; the cutting frame 2, as the execution unit for final forming and processing, is located on the downstream side of the whole machine.

[0021] The carrier frame 1 is a welded steel frame structure. Its internal space is functionally divided into a loading area and a feeding area. The loading area, located upstream of the carrier frame 1 at a higher position, is used to support the stacked steel pipe guide rails 3 raw materials to be cut. The feeding area, located downstream of the loading area at a lower position, is the transition zone where the steel pipe guide rails 3 change from a static stacked state to a single-piece rolling conveyor state. The loading area and the feeding area are spatially separated and the material flow is controlled by a retaining beam 15.

[0022] like Figure 2 and Figure 3 As shown, the carrier 1 is equipped with a bottom beam 13 and a top beam 14. Both the bottom beam 13 and the top beam 14 are arranged at an angle, preferably between 15° and 25°. This angled arrangement causes the multiple steel pipe guide rails 3 stacked above the bottom beam 13 and the top beam 14 to naturally converge towards the feeding area under the influence of their own gravity, thus ensuring the continuity of material supply during the feeding process. The upper surface of the bottom beam 13 serves as the main bearing surface, directly supporting the bottom of the pipe wall of the steel pipe guide rail 3; the top beam 14 is located diagonally above the bottom beam 13, and its side provides auxiliary restraint to the upper part of the pipe wall of the steel pipe guide rail 3, preventing the steel pipe guide rail 3 from rolling or slipping during stacking.

[0023] A retaining beam 15 is fixedly installed on the side of the bottom beam 13 near the feeding area. The upper surface of the retaining beam 15 is higher than the upper surface of the bottom beam 13, and the vertical projection of the top of the retaining beam 15 is located at the entrance boundary of the feeding area. The key function of the retaining beam 15 is that when multiple steel pipe guide rails 3 roll towards the feeding area due to gravity, the top sidewall of the retaining beam 15 can effectively block the steel pipe guide rails 3 located in the lower stacking layer, allowing only one or a few steel pipe guide rails 3 lifted from above by the lifting plate 4 to pass over its top and enter the feeding area.

[0024] A vertical plate 16 is fixedly installed on the top beam 14. The vertical plate 16 is a steel plate arranged perpendicular to the length of the top beam 14, with its surface facing the inner space of the loading area. The vertical plate 16 cooperates with the retaining beam 15 to limit the steel pipe guide rail 3 in two orthogonal directions in the horizontal plane, ensuring that the steel pipe guide rail 3 will not tilt or move during stacking and being lifted by the lifting plate 4.

[0025] To automatically transfer the steel pipe guide rail 3 from the loading area to the feeding area, a first cylinder 17 is fixedly installed on the bottom beam 13. The first cylinder 17 is a single-piston rod double-acting cylinder, and its cylinder body tail is hinged to the lower flange of the bottom beam 13 through a pin seat. A self-lubricating copper sleeve is embedded in the pin seat to ensure the flexibility of the first cylinder 17 during the swinging process. The first cylinder 17 is arranged obliquely, and its piston rod extends towards the feeding area and is inclined upwards. This inclination angle is approximately the same as the inclination angle of the bottom beam 13, so that the movement trajectory of the piston rod is basically consistent with the stacking arrangement direction of the steel pipe guide rail 3 in the loading area.

[0026] The piston rod end of the first cylinder 17 is fastened to the lower side of the lifting plate 4 through a fisheye joint. The lifting plate 4 is a long strip of steel plate that extends laterally along the carrier 1. The width of the lifting plate 4 is set according to the diameter of the steel pipe guide rail 3, which is usually 1.2 to 1.5 times the outer diameter of the steel pipe guide rail 3.

[0027] When compressed air is introduced into the rodless chamber of the first cylinder 17, the piston rod extends, driving the lifting plate 4 to move upward along the guide channel steel. The upper surface of the lifting plate 4 lifts one or more steel pipe guide rails 3 located at the bottom upward. Since the lifting plate 4 is arranged obliquely and located inside the retaining beam 15, when the lifting plate 4 rises to a point where its upper surface is higher than the top of the retaining beam 15, the lifted steel pipe guide rails 3 pass over the retaining beam 15 under the action of gravity and roll down onto the driven support roller 5 in the feeding area.

[0028] After the steel pipe guide rail 3 enters the feeding area from the loading area, its own weight is borne by multiple driven support rollers 5 that are rotatably installed in the feeding area. For example... Figure 4 and Figure 5 As shown, multiple driven support rollers 5 are arranged at equal intervals along the conveying direction of the steel pipe guide rail 3. The driven support rollers 5 are all unpowered free-rotating rollers, and their outer circumference is covered with a polyurethane elastic layer. This elastic layer can increase the coefficient of friction between the roller and the outer wall of the steel pipe guide rail 3 to prevent the steel pipe from slipping during the conveying process, and can also absorb the impact energy generated when the steel pipe falls, protecting the surface of the pipe wall from being scratched.

[0029] All driven support rollers 5 are mounted on the same support beam 18, which is a rectangular steel pipe extending longitudinally. A connecting seat 19 is fixedly mounted at the bottom of the support beam 18. The connecting seat 19 is a U-shaped casting with its opening facing downwards. A threaded rod 20 is hinged to the bottom side of the connecting seat 19 via a pin. The threaded section of the threaded rod 20 uses a trapezoidal thread and has self-locking properties. The threaded rod 20 extends vertically downwards and forms a threaded engagement with a crossbeam inside the carrier frame 1. This crossbeam is fixedly welded to the bottom frame of the carrier frame 1, and a threaded through hole adapted to the threaded rod 20 is provided on the crossbeam. A handwheel 21 is fixedly mounted after the bottom end of the threaded rod 20 passes through the crossbeam. Anti-slip protrusions are evenly distributed on the circumference of the handwheel 21 for easy gripping and force application by the operator.

[0030] When the operator rotates handwheel 21, the threaded rod 20 rotates in or out relative to the crossbeam. Since the crossbeam remains stationary, the rotational motion of the threaded rod 20 is converted into the vertical linear movement of the connecting seat 19 and the support beam 18, thereby achieving synchronous adjustment of the height of all driven support rollers 5. After the height adjustment is completed, the locking nut on the threaded rod 20 can be tightened to fit against the surface of the crossbeam, playing a role in preventing loosening and ensuring that the height position of the support beam 18 remains unchanged under long-term cutting vibration conditions.

[0031] like Figure 6 As shown, the cutting frame 2 is a large load-bearing skeleton on the downstream side of the entire machine. The bottom of the cutting frame 2 is installed on the foundation through shock-absorbing pads. The top space of the cutting frame 2 is divided into a power area and a cutting area by a partition 6 fixedly installed in the middle. A through hole for the steel pipe guide rail 3 to pass through is opened in the center of the partition 6. The diameter of the through hole is set according to the maximum processing pipe diameter of the equipment.

[0032] The power zone is located upstream of the partition 6, i.e., near the carrier 1. This zone houses the first adjusting plate 7, the second adjusting plate 8, the active support roller 9, and related drive cylinders, motors, and transmission components. The main function of the power zone is to precisely clamp and quantitatively feed the steel pipe guide rail 3 into the cutting frame 2. The cutting zone is located downstream of the partition 6, i.e., away from the carrier 1. This zone houses the laser cutting head 10, the blowing assembly 11, and the discharge channel 12. A transparent protective cover can be installed around the cutting zone to facilitate operator observation of the cutting process and to prevent the outward diffusion of laser reflection and molten slag.

[0033] A first bottom rail 22, perpendicular to the conveying direction of the steel pipe guide rail 3, is installed in the power zone. The first bottom rail 22 is a precision linear guide rail, fixed to the bottom mounting plane of the cutting frame 2 by countersunk screws. A first slider 23, a second slider 24, a third slider 25, and a fourth slider 26 are slidably mounted on the first bottom rail 22 from left to right. Each slider is a standard square flange slider, with a circulating ball retainer inside. Lubrication nozzles are located on the sides of the sliders, allowing for periodic addition of lithium-based grease via a manual lubrication pump. The first slider 23 and the fourth slider 26 are located at the left and right ends of the first bottom rail 22, respectively, and are respectively fastened to a first action plate 27 and a second action plate 28.

[0034] The first adjusting plate 7 and the second adjusting plate 8 are respectively fastened to the second slider 24 and the third slider 25. The first adjusting plate 7 is located on the side closer to the first acting plate 27, and the second adjusting plate 8 is located on the side closer to the second acting plate 28. The first acting plate 27 is fastened to the side wall of the cutting frame 2 via the first support 29. The first support 29 is an L-shaped welded part, whose vertical surface is connected to the side wall of the cutting frame 2 by high-strength bolts, and its horizontal surface is connected to the first acting plate 27 by bolts. Reinforcing ribs are welded at the corners of the first support 29 to enhance its bending stiffness. Since the first acting plate 27 is fixedly connected to the cutting frame 2 via the first support 29, the initial position of the first adjusting plate 7 relative to the cutting frame 2 is fixed to the reference side.

[0035] A second cylinder 30 is fixedly installed on the side wall of the cutting frame 2 opposite to the first support 29. The second cylinder 30 is a large-diameter double-acting cylinder. A second support 31 is fixedly installed at the end of the piston rod of the second cylinder 30, and the second support 31 is fastened to the second action plate 28. When the piston rod of the second cylinder 30 extends or retracts, the second action plate 28 drives the fourth slider 26 to slide along the first bottom rail 22, thereby realizing a wide range of coarse adjustment movement of the second adjustment plate 8 relative to the first adjustment plate 7.

[0036] A third cylinder 32, arranged opposite to each other, is fixedly mounted on the first actuating plate 27, and a fourth cylinder 33, arranged opposite to each other, is fixedly mounted on the second actuating plate 28. The piston rods of the third cylinder 32 and the fourth cylinder 33 extend in opposite directions. The piston rod of the third cylinder 32 passes through the first actuating plate 27 and is securely connected to the first adjusting plate 7, while the piston rod of the fourth cylinder 33 passes through the second actuating plate 28 and is securely connected to the second adjusting plate 8. The third cylinder 32 and the fourth cylinder 33 have small diameters and are both equipped with high-precision electro-proportional valves, allowing for stepless fine adjustment of the piston rod extension position. Through precise control of the third cylinder 32 and the fourth cylinder 33, fine adjustment of the distance between the first adjusting plate 7 and the second adjusting plate 8 can be achieved.

[0037] A bearing seat 34 is fixedly installed on both the first adjusting plate 7 and the second adjusting plate 8. The bearing seat 34 is an integral cast iron seat with stepped holes inside for mounting bearings. A shaft 35 is rotatably mounted on each bearing seat 34. An active support roller 9 is mounted on the shaft 35 via a key connection. The outer circumference of the active support roller 9 is also covered with a polyurethane layer or knurled to increase the driving friction. The active support rollers 9 located on the first adjusting plate 7 and the second adjusting plate 8 are arranged in pairs, with their axes parallel and located in the same horizontal plane. When the steel pipe guide rail 3 is located between them, the polyurethane layer of the active support rollers 9 on both sides forms tangential contact with the outer wall of the steel pipe guide rail 3.

[0038] like Figure 9 As shown, to achieve active quantitative feeding of the steel pipe guide rail 3, a first motor 36 is fixedly installed inside the second action plate 28. The first motor 36 is a servo motor. The output shaft of the first motor 36 is arranged vertically upward, and a first pulley 37 is fastened to the output shaft by a flat key. The first pulley 37 is a steel synchronous pulley. The upper ends of each shaft 35 on the second adjustment plate 8 extend beyond the shaft seat 34, and a second pulley 38 is fastened to its periphery by an expansion sleeve. The number of teeth of the second pulley 38 is the same as that of the first pulley 37. A first belt 39 is fitted between the first pulley 37 and the second pulley 38. The first belt 39 is a polyurethane synchronous belt with steel wire core embedded inside, which has high tensile strength and low elongation. An automatic tensioning wheel is provided on the outside of the first belt 39. The tensioning wheel is installed on the second action plate 28, and its position can be adjusted by an elongated hole to control the initial tension of the first belt 39 between 200N and 300N. When the first motor 36 rotates, the first pulley 37 simultaneously drives the second pulleys 38 on the second adjusting plate 8 to rotate synchronously via the first belt 39, thereby driving the shafts 35 and the active support rollers 9 to rotate. Since the active support rollers 9 on the first adjusting plate 7 and the second adjusting plate 8 clamp the steel pipe guide rail 3 from both sides, the friction generated by the rotation of the active roller on one side drives the steel pipe guide rail 3 to move smoothly along the axial direction.

[0039] After the steel pipe guide rail 3 passes through the partition 6 and enters the cutting zone under the drive of the active support roller 9, in order to ensure that the laser cutting head 10 can perform continuous circumferential cutting on the pipe wall, the present invention is equipped with a rotatable auxiliary clamping mechanism. For example... Figure 10 As shown, a fourth support 42 located in the power zone is provided on the side of the partition 6. A collar 43 is coaxially arranged between the fourth support 42 and the partition 6. The collar 43 has a cylindrical structure, and a flange is provided at one end near the partition 6. This flange is rotatably engaged with the partition 6 through a crossed roller bearing. The inner ring of the crossed roller bearing is fixed to the partition 6, and the outer ring is fixed to the flange of the collar 43.

[0040] Six arc-shaped clamping blocks 44 are evenly distributed circumferentially on the inner wall of the collar 43. The radius of the inner arc surface of the arc-shaped clamping block 44 is adapted to the outer diameter of the steel pipe guide rail 3. A nitrile rubber pad is bonded to its inner arc surface to increase the clamping friction and prevent damage to the pipe wall. An adjusting rod 45 is fixedly connected to the center of the back side of each arc-shaped clamping block 44. The adjusting rod 45 is an externally threaded screw, and its threaded section is fitted with a threaded through hole on the cylindrical wall of the collar 43. The outer end of the adjusting rod 45 extends out of the outer wall of the collar 43 and is provided with an internal hexagonal wrench socket. When the adjusting rod 45 is turned, the end of the adjusting rod 45 pushes the arc-shaped clamping block 44 to move radially inward or outward, so that the clamping force of the six arc-shaped clamping blocks 44 can be adjusted synchronously or separately on the steel pipe guide rail 3. Preferably, the six adjusting rods 45 can be synchronously rotated through the linkage gear ring to ensure that the radial feed of each arc-shaped clamp 44 is consistent, so that the axis of the steel pipe guide rail 3 always coincides with the rotation axis of the collar 43.

[0041] A second motor 46, also a servo motor, is fixedly mounted on the cutting frame 2. A third pulley 47 is mounted on the output shaft of the second motor 46, and a fourth pulley 48 is fastened to the periphery of the collar 43. A second belt 49 is fitted between the third pulley 47 and the fourth pulley 48. The transmission ratio between the third pulley 47 and the fourth pulley 48 is designed to be 1:2 to ensure that the collar 43 receives sufficient cutting torque. When the second motor 46 starts, the rotational power is transmitted to the collar 43 through the second belt 49, driving the collar 43, along with its internal arc-shaped clamping block 44 and the steel pipe guide rail 3, to rotate smoothly around its own axis. By controlling the rotation angle and speed of the second motor 46, continuous rotation or indexing rotation of the steel pipe guide rail 3 can be achieved during the cutting process.

[0042] like Figure 11 As shown, a cantilever frame 50 is fixedly installed on the top platform of the cutting frame 2. The bottom of the cantilever frame 50 is fastened to the top platform of the cutting frame 2 by four M24 high-strength bolts. The top of the cantilever frame 50 extends horizontally towards the cutting area, forming a cantilever beam, and a mounting plate 51 is fixedly installed on its end side. The mounting plate 51 is a long strip of steel plate with two rows of parallel elongated adjustment holes along the vertical direction on its surface. The mounting plate 51 is fastened to the outer flange of the laser cutting head 10 by bolts passing through the elongated holes. The operator can adjust the position of the bolts in the elongated holes to precisely adjust the distance between the laser cutting head 10 and the surface of the steel pipe guide rail 3 to adapt to the cutting focal length requirements of steel pipe guide rails with different outer diameters. The laser cutting head 10 is a fiber laser cutting head, which is equipped with a collimating lens group and a focusing lens group inside. The laser cutting head 10 has a water cooling interface and an auxiliary gas interface on its outer shell, which are connected to an external chiller and a high-pressure gas source, respectively, to ensure the thermal stability of the cutting head under continuous working conditions.

[0043] Because a large amount of high-temperature molten metal slag is generated during laser cutting, in order to prevent slag splashing and contaminating the cutting head lens and working environment, this invention provides a blowing assembly 11 in the cutting area. Figure 12 As shown, the purging assembly 11 includes a fifth support 1101, which is a welded channel steel component. It is bolted to one side of the cutting area of ​​the partition 6. A ball screw assembly 1102 is mounted on the fifth support 1101. The ball screw assembly 1102 is integrated from a servo motor, a ball screw pair, and a linear guide pair. A sliding plate 1103 is fixedly mounted on the sliding output end of the ball screw. The arrangement direction of the ball screw assembly 1102 can be set to vertical or horizontal depending on the spatial position of the cutting point.

[0044] A second bottom rail 1104 and a fifth cylinder 1105 are fixedly mounted on the slide plate 1103. The second bottom rail 1104 is a small precision linear guide, and its length direction is perpendicular to the movement direction of the ball screw assembly 1102. The cylinder body of the fifth cylinder 1105 is fixedly connected to the slide plate 1103 via an L-shaped bracket, and its piston rod extends parallel to the second bottom rail 1104. A fifth slider 1106 is slidably mounted on the second bottom rail 1104, and the side wall of the fifth slider 1106 is fastened to the end of the piston rod of the fifth cylinder 1105 via a floating joint. When the piston rod of the fifth cylinder 1105 extends or retracts, the fifth slider 1106 reciprocates linearly along the second bottom rail 1104.

[0045] A locking seat 1107 is fixedly installed on the upper surface of the fifth slider 1106. An air supply cylinder 1108 is securely fitted into the inner hole of the locking seat 1107. The air supply cylinder 1108 is a stainless steel cylinder, and its outer diameter is clearance-fitted with the inner diameter of the locking seat 1107. An air supply rod 1109 is fixedly installed at the air outlet end of the air supply cylinder 1108 via a threaded connection. A purge head 1110 is fixedly installed at the head of the air supply rod 1109. The air outlet of the purge head 1110 can be designed as a flat round opening. This structure allows high-pressure gas to be ejected in a high-speed, thin-film jet, forming a powerful directional blow-off of molten slag in the cutting focal area.

[0046] Through the cooperation of the ball screw assembly 1102, the fifth cylinder 1105, the second bottom rail 1104, and the fifth slider 1106, the blow head 1110 has at least two orthogonal degrees of freedom in space. It can precisely align the air outlet of the blow head 1110 with the cutting focal area of ​​the laser cutting head 10 according to the changes in the outer diameter of the steel pipe guide rail 3 and the cutting position. The feed motion of the blow head 1110, the feeding motion of the active support roller 9, and the rotational motion of the collar 43 are independently controlled and can be linked or acted independently via a PLC.

[0047] In addition, a third support 40 is provided between the first adjusting plate 7 and the second adjusting plate 8. The third support 40 is an inverted U-shaped bracket, with its bottom fixedly installed on the base plate of the cutting frame 2, spanning above the first bottom rail 22. A photoelectric sensor 41 is fixedly installed on the top of the third support 40. The photoelectric sensor 41 is a through-beam infrared photoelectric switch, with its transmitting and receiving ends installed on the columns on both sides of the top of the third support 40, respectively. The photoelectric sensor 41 is set at a height lower than the lower busbar of the steel pipe guide rail 3. That is, when the steel pipe guide rail 3 has not reached the detection position, the light path of the photoelectric sensor 41 is unobstructed; when the end of the steel pipe guide rail 3 moves directly above the photoelectric sensor 41, the pipe wall of the steel pipe guide rail 3 blocks the light path, and the sensor outputs a switch signal. This signal is sent to the PLC controller of the equipment to determine whether the steel pipe guide rail 3 has entered the cutting area, and serves as one of the trigger conditions for stopping or starting the cutting.

[0048] A discharge channel 12 is provided at the bottom of the cutting area. The discharge channel 12 is an inclined steel plate chute, with its high end located directly below the laser cutting head 10 and its low end extending beyond the cutting frame 2. The bottom plate of the chute has an inclination angle of 30° to 45°, and its inner wall surface is polished and coated with a wear-resistant ceramic coating to reduce the frictional resistance between the molten slag and the chute. A collection hopper is provided at the inlet of the discharge channel 12. The collection hopper is funnel-shaped, wider at the top and narrower at the bottom, with an opening width greater than the lateral dimension of the cutting area to ensure that the splashed molten slag falls into the collection hopper as much as possible under the action of gravity. The lower outlet of the collection hopper connects to the inlet of the discharge channel 12, and a slag collection box is placed at the lower end of the discharge channel 12 for easy centralized cleaning.

[0049] The working principle of this invention is as follows: First, the operator bundles multiple steel pipe guide rails 3 into the loading area of ​​the carrier frame 1, using the inclined limiting effect of the bottom beam 13, top beam 14, and retaining beam 15 to ensure stable stacking. The first cylinder 17 is activated to drive the lifting plate 4 to rise, lifting the single steel pipe guide rail 3 from the loading area to the feeding area and placing it on the driven support roller 5.

[0050] Subsequently, the steel pipe guide rail 3 rolls forward on the driven support roller 5, and its front end enters the power zone of the cutting frame 2. The second cylinder 30 is activated, pushing the second action plate 28 closer to the first action plate 27. At the same time, the third cylinder 32 and the fourth cylinder 33 finely adjust the positions of the first adjusting plate 7 and the second adjusting plate 8, so that the active support rollers 9 on both sides clamp the steel pipe guide rail 3 with appropriate pressure.

[0051] Next, the first motor 36 starts, driving the active support roller 9 to rotate via the first belt 39. Under the action of friction, the steel pipe guide rail 3 is fed laterally along a set length, passing through the collar 43 and entering the cutting area. After reaching the predetermined position, the adjusting rod 45 is tightened, and the arc-shaped clamp 44 holds the steel pipe guide rail 3 tightly within the collar 43.

[0052] Then, the laser cutting head 10 is started, and at the same time, the second motor 46 drives the collar 43 to rotate through the second belt 49, and the steel pipe guide rail 3 rotates accordingly. The laser beam cuts the pipe wall around its entire circumference. During the cutting process, the ball screw assembly 1102 of the blowing assembly 11 adjusts the blowing head 1110 to the vicinity of the cutting point, and the fifth cylinder 1105 pushes the blowing head 1110 closer to the cutting focus. High-pressure gas continuously blows away the molten slag, which is then discharged through the discharge channel 12.

[0053] After the cutting is completed, the arc-shaped clamp 44 is released, and the active support roller 9 continues to drive the remaining steel pipe guide rail 3 forward, pushing the cut finished guide rail out of the cutting area and preparing for the next cycle of cutting.

[0054] Through the progressive description of the above components and their cooperation relationships, it can be clearly seen that the present invention realizes the fully automated operation of the entire process from automatic material distribution, quantitative feeding, rotary cutting to fixed-point slag blowing of steel pipe guide rails, effectively solving the problems of inaccurate manual feeding and slag splashing pollution in the background technology, and significantly improving production efficiency and cutting quality.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lifting platform guide rail cutting device, comprising a carrier (1) and a cutting frame (2), characterized in that, The carrier (1) is provided with a loading area and a feeding area. The loading area is used to support the steel pipe guide rail (3). A lifting plate (4) is provided in the loading area. The lifting plate (4) is used to move the steel pipe guide rail (3) from the loading area to the feeding area. Multiple driven support rollers (5) are rotatably installed in the feeding area. The driven support rollers (5) are used to roll and support the steel pipe guide rail (3). A partition (6) is fixedly installed in the middle of the cutting frame (2). The partition (6) divides the cutting frame (2) into a power area and a cutting area. A first adjusting plate (7) and a second adjusting plate (8) are provided in the power area. The first adjusting plate (7) 7) The distance between the first and second adjusting plates (8) is adjustable, and multiple active support rollers (9) are installed on both the first and second adjusting plates (7) and the second adjusting plates (8). The active support rollers (9) are used to drive the steel pipe guide rail (3) to move laterally. A laser cutting head (10) is fixedly installed in the cutting area. A blowing assembly (11) is provided on the side of the laser cutting head (10). The blowing assembly (11) is fixedly connected to the partition plate (6). Its air outlet faces the cutting focus area of ​​the laser cutting head (10) and is used to spray gas to the cutting position to blow away the molten slag. A discharge channel (12) is also provided in the cutting area.

2. The lifting platform guide rail cutting equipment according to claim 1, characterized in that, The carrier (1) is provided with a bottom beam (13) and a top beam (14). The bottom beam (13) and the top beam (14) are both located in the material loading area and are arranged obliquely. A baffle beam (15) is fixedly installed on the side of the bottom beam (13) near the material feeding area. A vertical plate (16) is fixedly installed on the top beam (14). A first cylinder (17) is fixedly installed on the bottom beam (13). The first cylinder (17) is arranged obliquely and its piston rod is tightly connected to the lifting plate (4).

3. The lifting platform guide rail cutting equipment according to claim 1, characterized in that, The frame (1) is provided with a support beam (18), and the driven support rollers (5) are all installed on the support beam (18). A connecting seat (19) is fixedly installed at the bottom of the support beam (18). A threaded long rod (20) is hinged to the bottom side of the connecting seat (19). The threaded long rod (20) is threadedly engaged with the crossbeam in the frame (1). A handwheel (21) is fixedly installed at the bottom end of the threaded long rod (20).

4. The lifting platform guide rail cutting equipment according to claim 1, characterized in that, The power zone is fixedly installed with a first bottom rail (22) arranged perpendicularly to the steel pipe guide rail (3). A first slider (23), a second slider (24), a third slider (25), and a fourth slider (26) are slidably installed on the first bottom rail (22). The first slider (23) and the fourth slider (26) are respectively fastened to a first action plate (27) and a second action plate (28). The first adjustment plate (7) and the second adjustment plate (8) are respectively fastened to the second slider (24) and the third slider (25). The first action plate (27) is fastened to the cutting frame (2) through a first support (29). A second cylinder is fixedly installed on the cutting frame (2). 30), the piston rod end of the second cylinder (30) is fixedly mounted with a second support (31), the second support (31) is fastened to the second action plate (28), the first action plate (27) and the second action plate (28) are respectively fixedly mounted with opposing third cylinders (32) and fourth cylinders (33), the piston rods of the third cylinder (32) and the fourth cylinder (33) are respectively fastened to the first adjustment plate (7) and the second adjustment plate (8); the first adjustment plate (7) and the second adjustment plate (8) are both fixedly mounted with shaft seats (34), and the shaft seats (34) are rotatably mounted with shafts (35) for assembling active support rollers (9).

5. The lifting platform guide rail cutting equipment according to claim 4, characterized in that, The second action plate (28) is fixedly installed with a first motor (36). The output shaft of the first motor (36) is arranged upward and fastened with a first pulley (37). The outer periphery of each shaft (35) on the second adjustment plate (8) is fastened with a second pulley (38). A first belt (39) for transmission is fitted between the first pulley (37) and the second pulley (38).

6. The lifting platform guide rail cutting equipment according to claim 1, characterized in that, A third support (40) is provided between the first adjusting plate (7) and the second adjusting plate (8). A photoelectric sensor (41) for detecting the passage of the steel pipe guide rail (3) is fixedly installed on the top of the third support (40). The height of the photoelectric sensor (41) is lower than that of the steel pipe guide rail (3).

7. The lifting platform guide rail cutting equipment according to claim 1, characterized in that, The side of the partition (6) is provided with a fourth support (42) located in the power zone. The fourth support (42) is fastened to the cutting frame (2). A collar (43) for the steel pipe guide rail (3) to pass through is provided between the fourth support (42) and the partition (6). One end of the collar (43) is rotatably engaged with the partition (6). Multiple circumferentially arranged arc-shaped clamps (44) are provided on the inner side of the collar (43). Each arc-shaped clamp (44) is connected to an adjusting rod (45). The adjusting rod (45) is threadedly engaged with the collar (43).

8. The lifting platform guide rail cutting equipment according to claim 7, characterized in that, A second motor (46) is fixedly installed on the cutting frame (2). A third pulley (47) is fitted on the output shaft of the second motor (46). A fourth pulley (48) is fastened to the periphery of the collar (43). A second belt (49) for transmission is fitted between the third pulley (47) and the fourth pulley (48).

9. The lifting platform guide rail cutting equipment according to claim 1, characterized in that, A cantilever (50) is fixedly installed on the cutting frame (2), and a suspension plate (51) is fixedly installed on the side of the top of the cantilever (50). The suspension plate (51) is tightly connected to the outer shell of the laser cutting head (10).

10. A lifting platform guide rail cutting device according to claim 1, characterized in that, The purging assembly (11) includes a fifth support (1101) fastened to the partition (6). A ball screw assembly (1102) is mounted on the fifth support (1101). A sliding plate (1103) is fixedly mounted on the sliding output end of the ball screw assembly (1102). A second bottom rail (1104) and a fifth cylinder (1105) are fixedly mounted on the sliding plate (1103). A fifth cylinder (1105) is slidably mounted on the second bottom rail (1104). The fifth slider (1106) is fastened to the piston rod of the fifth cylinder (1105). A locking seat (1107) is fixedly installed on the fifth slider (1106). An air supply cylinder (1108) is securely installed inside the locking seat (1107). An air supply rod (1109) is fixedly installed at the air outlet end of the air supply cylinder (1108). A blower head (1110) is fixedly installed at the head of the air supply rod (1109).

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