Stacked roller table for profile cutting

Abstract

This application discloses a stacking feed roller conveyor for cutting profile steel, comprising a drawing machine, a blanking frame, a feeding frame, a limiting assembly, and a cutting device. The feeding frame and the drawing machine are respectively disposed on both sides of the blanking frame in the width direction. The length direction of the drawing machine is parallel to the length direction of the blanking frame. The cutting device is disposed at one end of the feeding frame in the length direction. A guide bar is disposed on the drawing machine along its width direction. A support platform is disposed below the blanking frame. The side of the blanking frame away from the drawing machine is rotatably connected to the support platform. The higher side of the blanking frame is disposed corresponding to the drawing machine. A plurality of feeding rollers are horizontally rotatably disposed on the feeding frame in its width direction. The limiting assembly includes a first limiting vertical plate, which is vertically disposed along the length direction of the feeding frame and disposed above the feeding frame. This application has the effect of improving the cutting efficiency of metal profiles and realizing multi-layer stacking of metal profiles in the feeding structure.

Description

Technical Field

[0001] This application relates to the technical field of metal profile production, and in particular to a stacked feeding roller conveyor for cutting steel profiles. Background Technology

[0002] Feed roller conveyors are widely used material conveying equipment in industrial production, mainly used to continuously and stably transfer raw materials or semi-finished products between various workstations on the production line. Their core structure consists of multiple parallel feed rollers, which are driven to rotate by a motor, using friction to move the material placed on the roller conveyor.

[0003] In the existing technology, metal profiles are piled up on the unloading rack. Workers manually pick up several metal profiles and slide them onto the feeding roller conveyor. Then, workers manually push them into the band saw cutting machine, so that the band saw cutting machine can cut multiple steel profiles into sections at the same time.

[0004] Therefore, there is an urgent need to provide a feeding structure that can stack multiple layers on a feeding roller conveyor. However, due to the harsh working environment and the large amount of oil, the automatic unloading and stacking device is not suitable for using the robot-assisted fixtures in the existing technology. Therefore, it is necessary to design a feeding roller conveyor that can easily stack square metal profiles. Summary of the Invention

[0005] In order to improve the cutting efficiency of metal profiles and realize the multi-layer stacking of metal profiles in the feeding structure, this application provides a stacking feeding roller conveyor for steel profile cutting.

[0006] The technical solution for a stacked feeding roller conveyor for cutting profile steel provided in this application is as follows: A stacked feeding roller conveyor for cutting profiled steel includes a drawing machine, a blanking rack, a feeding rack, a limiting assembly, and a cutting device. The feeding rack and the drawing machine are respectively disposed on both sides of the blanking rack in the width direction. The length direction of the drawing machine is parallel to the length direction of the blanking rack. The cutting device is disposed at one end of the feeding rack in the length direction. A guide bar is disposed on the drawing machine along its width direction. The end of the guide bar near the blanking rack is lower than the end away from the blanking rack. A support is disposed below the blanking rack. The support platform is provided with a side of the unloading rack away from the drawing machine that is rotatably connected to the support platform. The support platform is provided with a driving component for driving the unloading rack to rotate. The higher side of the unloading rack is correspondingly arranged to the drawing machine. A plurality of feeding rollers are horizontally rotatably arranged on the feeding rack along its width direction. A driving source for driving the feeding rollers to rotate is provided on the feeding rack. The limiting component includes a first limiting vertical plate, which is vertically arranged along the length direction of the feeding rack and is located above the feeding rack.

[0007] By adopting the above technical solution, when metal profile cutting is required, the first limiting vertical plate is set above the feeding rack. The drawing machine pulls out the metal profiles one by one, and the metal profiles slide along the inclined guide rods and the unloading rack to the top surface of the feeding rack. The first limiting vertical plate limits the metal profiles sliding onto the feeding rack. The above operation is repeated to feed the metal profiles one by one onto the feeding rack. After the feeding operation of multiple metal profiles is completed, the feeding roller, driven by the drive source, transports several metal profiles on the feeding rack to the cutting device. The cutting device simultaneously cuts multiple metal profiles on the feeding rack, which helps to improve the cutting efficiency of metal profiles. Through the cooperation of the drawing machine, unloading rack, feeding rack, limiting components and cutting device, the cutting efficiency of metal profiles is improved and the multi-layer stacking of metal profiles in the feeding structure is achieved.

[0008] Optionally, a support sleeve is vertically arranged below the feeding rack, and a support slide rod is slidably arranged in the support sleeve. The top end of the support slide rod is connected to the feeding rack, and a driving component for driving the support slide rod to move vertically is provided between the support sleeve and the support slide rod.

[0009] Optionally, the limiting assembly further includes a second limiting vertical plate and a limiting top plate. The limiting top plate is horizontally disposed above the feeding rack. The first limiting vertical plate and the second limiting vertical plate are both vertically disposed below the limiting top plate. The first limiting vertical plate and the second limiting vertical plate are parallel to each other. The second limiting vertical plate is disposed on the side of the first limiting vertical plate near the unloading rack. The limiting top plate is provided with a driving component for driving the first limiting vertical plate and the second limiting vertical plate to move along the width direction of the limiting top plate.

[0010] Optionally, a second connecting rod is connected to the top edge of the second limiting vertical plate. A second movable groove is formed along the width direction of the limiting top plate. The second connecting rod is slidably disposed in the second movable groove. A guide groove is formed on the vertical inner wall of the second movable groove. The guide groove includes an inclined section near the unloading frame and a horizontally disposed horizontal section. The end of the inclined section away from the unloading frame is connected to the end of the horizontal section. A guide slide rod is horizontally connected to the second connecting rod. The guide slide rod is slidably disposed in the guide groove. When the guide slide rod is located at the end of the inclined section away from the horizontal section, the bottom edge height of the second limiting vertical plate is higher than the bottom edge height of the first limiting vertical plate. When the guide slide rod is located in the horizontal section of the guide groove, the bottom edge height of the first limiting vertical plate is the same as the bottom edge height of the second limiting vertical plate. A connecting sleeve is provided on the limiting top plate. The second connecting rod is vertically slidably connected to the connecting sleeve. A driving component for driving the connecting sleeve to move along the width direction of the limiting top plate is provided on the limiting top plate.

[0011] Optionally, the unloading frame includes an inclined unloading outer frame and a plurality of unloading rods arranged along the width direction of the unloading outer frame, and a plurality of unloading rollers are rotatably arranged on the top surface of the unloading rods.

[0012] Optionally, a lifting plate is provided on the bottom surface of the feeding rack, and a first limiting roller and a second limiting roller are vertically rotatably provided on the top surface of the lifting plate. The first limiting roller and the second limiting roller are respectively located on both sides of the width direction of the lifting plate, and a driving component for driving it to move in the vertical direction is provided on the lifting plate.

[0013] Optionally, a plurality of first and second limiting rollers are provided on the top surface of the lifting plate. The connecting direction of the plurality of first limiting rollers and the connecting direction of the plurality of second limiting rollers are parallel to the length direction of the lifting plate. A plurality of movable slots are provided on the lifting plate along its width direction. The plurality of movable slots correspond one-to-one with the plurality of second limiting rollers and are slidably connected. A linkage rod is provided on the bottom surface of the lifting plate. The linkage rod is connected to the plurality of second limiting rollers. A driving component is provided on the lifting plate for driving the linkage rod to move along its width direction.

[0014] Optionally, a pressing top plate is horizontally arranged below the limiting top plate, a plurality of contact rollers are rotatably arranged on the pressing top plate, and a driving component for driving the pressing top plate to rise and fall is provided on the limiting top plate.

[0015] In summary, this application includes at least one of the following beneficial technical effects: By cooperating with the drawing machine, unloading rack, feeding rack, limiting components and cutting device, the efficiency of cutting metal profiles can be improved and the multi-layer stacking of metal profiles in the feeding structure can be achieved. The first and second limiting rollers enable the limiting operation on both sides of the width direction of several metal profiles during the feeding process, which helps to reduce the possibility of the stacked metal profiles becoming loose during the feeding process. The height of the feeding rack is adjustable, which facilitates the multi-layer stacking of metal profiles on the feeding rack. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the structure of a stacked feeding roller conveyor for cutting steel profiles, as described in this application.

[0017] Figure 2 This is a partial cross-sectional view used to illustrate the limiting component in the embodiments of this application.

[0018] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0019] Explanation of reference numerals in the attached drawings: 1. Drawing machine; 101. Connecting crossbar; 102. Guide diagonal bar; 2. Unloading rack; 21. Unloading outer frame; 22. Unloading rod; 23. Unloading roller; 3. Feeding rack; 31. Feeding roller; 32. Support sleeve rod; 33. Support slide rod; 34. Support cylinder; 4. Cutting machine; 5. Limiting assembly; 51. Limiting top plate; 511. First moving slide groove; 512. Second moving slide groove; 52. First limiting vertical plate; 53. First connecting rod; 54. First moving cylinder; 55. Second limiting vertical plate; 56. Second connecting rod; 57. Guide slide rod; 58. Second moving cylinder; 59. Connecting slide sleeve; 6. Support platform; 7. Rotating cylinder; 8. Guide groove; 81. Inclined section; 82. Horizontal section; 9. Pressing top plate; 10. Contact roller; 11. Lifting plate; 111. Moving through groove; 12. Lifting cylinder; 13. First limiting roller; 14. Second limiting roller; 15. Linkage rod; 16. Adjusting cylinder. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-3 This application will be further described in detail below. Embodiments of this application provide a stacked feeding roller conveyor for cutting profiles, which improves the cutting efficiency of metal profiles and enables multi-layer stacking of metal profiles in the feeding structure.

[0021] Reference Figure 1A stacked feeding roller conveyor for cutting profiled steel includes a drawing machine 1, a feeding rack 2, a feeding rack 3, a cutting machine 4, and a limiting assembly 5. In this embodiment, the drawing machine 1 is a chain-type drawing machine 1. The feeding rack 2 is located on one side of the drawing machine 1 in the width direction, and the feeding rack 3 is located on the side of the feeding rack 2 away from the drawing machine 1. The feeding rack 3, the drawing machine 1, and the feeding rack 2 are arranged parallel to each other in the length direction. A connecting crossbar 101 is provided along the length direction of the drawing machine 1 on the side away from the feeding rack 2. Several guide rods 102 are arranged parallel to the top surface of the drawing machine 1 between the connecting crossbar 101 and the top surface of the drawing machine 1 in the width direction. The height of the guide rods 102 near the feeding rack 2 is lower than the height of the guide rods 102 away from the feeding rack 2. One end of the feeding rack 3 in the length direction is the discharge end. The cutting machine 4 is located at the discharge end of the feeding rack 3. In this embodiment, the cutting machine 4 is a band saw type cutting machine 4.

[0022] Reference Figure 1 The unloading rack 2 is inclined, with the end of the unloading rack 2 near the drawing machine 1 being higher than the end near the feeding rack 3. The unloading rack 2 includes an unloading outer frame 21 and unloading rods 22. Several unloading rods 22 are arranged parallel to each other along the width direction in the unloading outer frame 21, and several unloading rollers 23 are rotatably mounted on the top surface of the unloading rods 22. A support platform 6 is provided below the unloading rack 2. The top surface of the support platform 6 is rotatably connected to the lower side of the unloading rack 2, and a rotating cylinder 7 is rotatably connected to the top surface of the support platform 6. The output shaft of the rotating cylinder 7 is rotatably connected to the bottom surface of the unloading outer frame 21.

[0023] Reference Figure 1 A plurality of feeding rollers 31 are rotatably mounted on the feeding frame 3 along its width direction. A drive source is provided on the feeding frame 3 to drive the feeding rollers 31 to rotate synchronously. A plurality of support sleeves 32 are vertically supported on the ground. Each support sleeve 32 has a support slide rod 33 vertically slidably mounted therein. The top end of the support slide rod 33 is connected to the bottom surface of the feeding frame 3. A support cylinder 34 is connected to the support slide rod 33. The output shaft of the support cylinder 34 extends vertically downward and is connected to the support sleeve 32 for transmission.

[0024] Reference Figure 1 and Figure 2The limiting component 5 is disposed above the feeding rack 3. The limiting component 5 includes a limiting top plate 51, a first limiting vertical plate 52, a first connecting rod 53, a first moving cylinder 54, a second limiting vertical plate 55, a second connecting rod 56, a guide slide rod 57, a second moving cylinder 58, and a connecting slide sleeve 59. The limiting top plate 51 is horizontally disposed above the feeding rack 3 along the length direction of the feeding rack 3. The first limiting vertical plate 52 and the second limiting vertical plate 55 are both disposed below the limiting top plate 51 along the length direction of the limiting top plate 51, and the second limiting vertical plate 55 is disposed on the side of the first limiting vertical plate 52 near the unloading rack 2. Several first connecting rods 53 are connected to the top edge of the first limiting vertical plate 52, and several second connecting rods 56 are connected to the top edge of the second limiting vertical plate 55. Both the first connecting rod 53 and the second connecting rod 56 are square rods. The limiting top plate 51 is provided with a plurality of first movable slide grooves 511 and a plurality of second movable slide grooves 512 along the width direction. The plurality of first movable slide grooves 511 correspond one-to-one with a plurality of first connecting rods 53 and are horizontally slidably arranged. The plurality of second movable slide grooves 512 correspond one-to-one with a plurality of second connecting rods 56 and are slidably arranged. The top ends of the first connecting rods 53 and second connecting rods 56 extend above the limiting top plate 51. A first movable cylinder 54 and a second movable cylinder 58 are disposed on the limiting top plate 51. The output shaft of the first movable cylinder 54 is arranged along the length direction of the first movable slide groove 511 and is connected to the corresponding first connecting rod 53. The output shaft of the second movable cylinder 58 is arranged along the length direction of the second movable slide groove 512 and is connected to the connecting sleeve 59.

[0025] Reference Figure 2 and Figure 3 Several connecting sleeves 59 are provided, and each connecting sleeve 59 corresponds to and is slidably connected to a number of second connecting rods 56. A guide groove 8 is provided on the vertical sidewall of the second movable slide groove 512. The guide groove 8 includes an inclined section 81 and a horizontal section 82 connected together. The inclined section 81 is located at the end of the horizontal section 82 near the unloading rack 2, and the height of the end of the inclined section 81 away from the horizontal section 82 is higher than the height of the end connected to it. A guide rod 57 is horizontally connected to the second connecting rod 56, and the end of the guide rod 57 is slidably disposed in the guide groove 8. When the guide rod 57 is located in the inclined section 81 of the guide groove 8, the bottom edge height of the second limiting vertical plate 55 is higher than the bottom edge height of the first limiting vertical plate 52. When the guide rod 57 is located in the horizontal section 82 of the guide groove 8, the bottom edge height of the first limiting vertical plate 52 is flush with the bottom edge height of the second limiting vertical plate 55.

[0026] Reference Figure 2 and Figure 3A pressing top plate 9 is horizontally arranged below the limiting top plate 51 along its length direction. The pressing top plate 9 is located between the first limiting vertical plate 52 and the second limiting vertical plate 55. Several contact rollers 10 are rotatably arranged on the bottom surface of the pressing top plate 9. A driving source for driving the pressing top plate 9 to move in the vertical direction is provided on the limiting top plate 51.

[0027] Reference Figure 2 and Figure 3 A lifting plate 11 is horizontally arranged below the feeding rack 3, and the length direction of the lifting plate 11 is parallel to the length direction of the feeding rack 3. Several lifting cylinders 12 are vertically arranged below the lifting plate 11, and the output shaft of the lifting cylinder 12 extends vertically and connects to the bottom surface of the lifting plate 11. A first limiting roller 13 and a second limiting roller 14 are vertically rotatably arranged on both sides of the top surface of the lifting plate 11 in the width direction. Several first limiting rollers 13 and second limiting rollers 14 are arranged on the top surface of the lifting plate 11. The connecting direction of the first limiting rollers 13 and the connecting direction of the second limiting rollers 14 are parallel to the length direction of the lifting plate 11. The first limiting rollers 13 and second limiting rollers 14 are staggered with the feeding roller 31 in the vertical direction.

[0028] Reference Figure 2 The lifting plate 11 has several movable slots 111 extending along its width, and these slots correspond one-to-one with and are slidably connected to several second limiting rollers 14. A linkage rod 15 is provided on the bottom surface of the lifting plate 11 along its length, and the linkage rod 15 is simultaneously connected to the bottom end of several second limiting rollers 14. An adjusting cylinder 16 is provided on the bottom surface of the lifting plate 11 to drive the linkage rod 15 to move along its width.

[0029] Reference Figure 1-3 During the metal profile production and cutting process, the drawing machine 1 pulls out the metal square tubes one by one. The metal square tubes slide towards the feeding frame 3 along the inclined guide bar 102 and the unloading bar 22. The unloading roller 23 facilitates smoother sliding of the square tubes on the unloading frame 2. The bottom edge height of the first limiting vertical plate 52 corresponds to the top surface height of the feeding roller 31. When the metal square tube slides onto the feeding frame 3, the first limiting vertical plate 52 limits its sliding distance, reducing the possibility of the metal square tube falling off the feeding frame 3. At this time, the guide slide bar 57 set on the second connecting rod 56 is located in the inclined section 81 of the guide groove 8. At this time, there is a distance between the bottom edge of the second limiting vertical plate 55 and the top surface of the feeding roller 31, which facilitates the smooth sliding of the metal square tube onto the feeding roller 31.

[0030] Reference Figure 1-3To accommodate the varying sliding distances required for the metal square tubes on the feeding rack 3, the rotary cylinder 7 is activated to adjust the tilt angle of the unloading rack 2, ensuring that the sliding speed of the metal square tubes on the feeding rack 3 matches the required sliding distance. After one tube is unloaded and stacked, the second limiting vertical plate 55 moves towards the first limiting vertical plate 52 under the drive of the second moving cylinder 58. The guide slide rod 57 slides into the horizontal section 82 of the guide groove 8. At this point, the bottom edge of the second limiting vertical plate 55 is flush with the bottom edge of the first limiting vertical plate 52. The first limiting vertical plate 52 and the second limiting vertical plate 55 simultaneously clamp several metal square tubes at the same horizontal height, eliminating gaps between adjacent metal square tubes and facilitating the stable stacking of the next layer of metal square tubes.

[0031] Reference Figure 2 When stacking the next layer of metal square tubes, the feeding rack 3 is lowered to a certain height under the action of the supporting cylinder 34, so that the height of the top layer of metal square tubes corresponds to the height of the bottom edge of the unloading rack 2, so as to facilitate the stacking of the next layer of metal square tubes. For different placement and stacking positions, the first limiting vertical plate 52 moves along the width direction of the limiting top plate 51 under the drive of the first moving cylinder 54 to adjust the position of the metal square tubes.

[0032] Reference Figure 2 and Figure 3 After the stacking operation of multiple layers of metal square tubes is completed, the lifting plate 11 moves upward under the drive of the lifting cylinder 12. The first limiting roller 13 and the second limiting roller 14 extend above the feeding roller 31 and are respectively located on both sides of the width of the bottom layer of several metal square tubes. The first limiting roller 13 and the second limiting roller 14 simultaneously limit the movement of the metal square tubes during cutting, reducing the possibility of skew in the feeding direction. For different guiding needs, the adjusting cylinder 16 is activated, driving the linkage rod 15 to move along the width direction of the lifting plate 11, adjusting the distance between the first limiting roller 13 and the second limiting roller. This expands the applicability of the device. The feeding roller 31 rotates synchronously under the drive of the drive source, synchronously driving the stacked metal square tubes placed on the feeding rack 3. At the same time, the drive source drives the pressing top plate 9 to descend until several contact rollers 10 contact the top surface of the metal square tube on the uppermost side, realizing stable transmission of multiple layers of metal square tubes. Multiple metal square tubes are cut simultaneously by the cutting machine 4, which helps to improve the processing efficiency of metal profiles.

[0033] The implementation principle of the stacked feeding roller conveyor for steel profile cutting in this embodiment is as follows: During the production and cutting of metal profiles, the drawing machine 1 pulls out the metal square tubes one by one, and the metal square tubes slide along the inclined guide bar 102 and the unloading bar 22 towards the feeding rack 3. The first limiting vertical plate 52 limits its sliding distance, reducing the possibility of the metal square tubes falling off the feeding rack 3.

[0034] After one metal square tube is stacked, the second limiting vertical plate 55 moves towards the first limiting vertical plate 52, eliminating gaps between adjacent metal square tubes and facilitating stable stacking of the next layer of metal square tubes. The feeding rack 3 descends a certain height, aligning the height of the top layer of metal square tubes with the height of the bottom edge of the unloading rack 2, to facilitate the stacking of the next layer of metal square tubes.

[0035] After the stacking operation of multiple layers of metal square tubes is completed, the lifting plate 11 moves upward, and the first limiting roller 13 and the second limiting roller 14 extend above the feeding roller 31 and are respectively located on both sides of the width of the metal square tube. The first limiting roller 13 and several second limiting rollers 14 simultaneously limit the metal square tube, reducing the possibility of its feeding direction becoming skewed. Multiple metal square tubes are cut simultaneously under the action of the cutting machine 4, which helps to improve the processing efficiency of metal profiles.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stacked feeding roller conveyor for cutting profiled steel, characterized in that: The assembly includes a drawing machine (1), a feeding rack (2), a feeding rack (3), a limiting component (5), and a cutting device. The feeding rack (3) and the drawing machine (1) are respectively located on both sides of the feeding rack (2) in the width direction. The length direction of the drawing machine (1) is parallel to the length direction of the feeding rack (2). The cutting device is located at one end of the feeding rack (3) in the length direction. A guide rod (102) is provided on the drawing machine (1) along its width direction. The end of the guide rod (102) near the feeding rack (2) is lower than the end away from the feeding rack (2). A support platform (6) is provided below the feeding rack (2). (2) The side away from the drawing machine (1) is rotatably connected to the support platform (6). The support platform (6) is provided with a driving component for driving the unloading rack (2) to rotate. The higher side of the unloading rack (2) is correspondingly provided to the drawing machine (1). The feeding rack (3) is provided with a plurality of feeding rollers (31) that rotate horizontally along its width direction. The feeding rack (3) is provided with a driving source for driving the feeding rollers (31) to rotate. The limiting component (5) includes a first limiting vertical plate (52). The first limiting vertical plate (52) is vertically provided along the length direction of the feeding rack (3). The first limiting vertical plate (52) is located above the feeding rack (3).

2. The stacked feeding roller conveyor for cutting profile steel according to claim 1, characterized in that: A support sleeve (32) is vertically arranged below the feeding rack (3), and a support slide rod (33) is slidably arranged in the support sleeve (32). The top end of the support slide rod (33) is connected to the feeding rack (3), and a driving member for driving the support slide rod (33) to move vertically is provided between the support sleeve (32) and the support slide rod (33).

3. The stacked feeding roller conveyor for cutting profile steel according to claim 2, characterized in that: The limiting component (5) further includes a second limiting vertical plate (55) and a limiting top plate (51). The limiting top plate (51) is horizontally disposed above the feeding rack (3). The first limiting vertical plate (52) and the second limiting vertical plate (55) are both vertically disposed below the limiting top plate (51). The first limiting vertical plate (52) and the second limiting vertical plate (55) are disposed parallel to each other. The second limiting vertical plate (55) is disposed on the side of the first limiting vertical plate (52) near the unloading rack (2). The limiting top plate (51) is provided with a driving member for driving the first limiting vertical plate (52) and the second limiting vertical plate (55) to move along the width direction of the limiting top plate (51).

4. The stacked feeding roller conveyor for cutting profile steel according to claim 3, characterized in that: A second connecting rod (56) is connected to the top edge of the second limiting vertical plate (55). A second moving groove (512) is provided on the limiting top plate (51) along its width direction. The second connecting rod (56) is slidably disposed in the second moving groove (512). A guide groove (8) is provided on the vertical inner wall of the second moving groove (512). The guide groove (8) includes an inclined section (81) near the unloading rack (2) and a horizontally disposed horizontal section (82). The end of the inclined section (81) away from the unloading rack (2) is connected to the end of the horizontal section (82). A guide slide rod (57) is horizontally connected to the second connecting rod (56). The guide slide rod (57) is slidably disposed in the guide groove (512). In 8), when the guide slide rod (57) is located at one end of the inclined section (81) away from the horizontal section (82), the bottom edge height of the second limiting vertical plate (55) is higher than the bottom edge height of the first limiting vertical plate (52). When the guide slide rod (57) is located in the horizontal section (82) of the guide groove (8), the bottom edge height of the first limiting vertical plate (52) is consistent with the bottom edge height of the second limiting vertical plate (55). A connecting sleeve (59) is provided on the limiting top plate (51). The second connecting rod (56) is vertically slidably connected to the connecting sleeve (59). A driving member for driving the connecting sleeve (59) to move along the width direction of the limiting top plate (51) is provided on the limiting top plate (51).

5. The stacked feeding roller conveyor for cutting profile steel according to claim 1, characterized in that: The unloading rack (2) includes an inclined unloading outer frame (21) and a plurality of unloading rods (22) arranged along the width direction of the unloading outer frame (21). A plurality of unloading rollers (23) are rotatably arranged on the top surface of the unloading rods (22).

6. The stacked feeding roller conveyor for cutting profile steel according to claim 4, characterized in that: A lifting plate (11) is provided below the feeding rack (3). A first limiting roller (13) and a second limiting roller (14) are vertically rotatably arranged on the top surface of the lifting plate (11). The first limiting roller (13) and the second limiting roller (14) are respectively located on both sides of the width direction of the lifting plate (11). A driving component for driving it to move in the vertical direction is provided on the lifting plate (11).

7. The stacked feeding roller conveyor for cutting profile steel according to claim 6, characterized in that: The first limiting roller (13) and the second limiting roller (14) are each provided on the top surface of the lifting plate (11). The connecting direction of the first limiting roller (13) and the connecting direction of the second limiting roller (14) are parallel to the length direction of the lifting plate (11). The lifting plate (11) is provided with a plurality of movable through slots (111) along its width direction. The plurality of movable through slots (111) correspond one-to-one with the plurality of second limiting rollers (14) and are slidably connected. The bottom surface of the lifting plate (11) is provided with a linkage rod (15). The linkage rod (15) is connected to the plurality of second limiting rollers (14). The lifting plate (11) is provided with a driving member for driving the linkage rod (15) to move along its width direction.

8. The stacked feeding roller conveyor for cutting profile steel according to claim 6, characterized in that: A pressing top plate (9) is horizontally arranged below the limiting top plate (51). Several contact rollers (10) are rotatably arranged on the pressing top plate (9). A driving component for driving the pressing top plate (9) to rise and fall is provided on the limiting top plate (51).

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