Automatic waste roll cutting device and method

Abstract

The invention discloses an automatic waste coil cutting device and method, and belongs to the technical field of steel, and the automatic waste coil cutting device comprises a walking cutting machine, a dust removal system arranged on the walking cutting machine and at least two cutting stations located within the coverage range of the walking cutting machine. A rotary workbench and a supporting and positioning material table are arranged in each cutting station. The automatic waste coil cutting device can alternately work between the cutting stations without waiting for discharging and distributing, so that the cutting efficiency is improved, in addition, it can be ensured that a cutting gun can cut waste steel coils in the radial direction and the circumferential direction, the cutting requirement of the waste steel coils is met, and mechanical replacement of manual cutting is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste roll cutting, and in particular to a waste roll automatic cutting device and method. Background Art

[0002] In the process of iron and steel making, steel mills will inevitably produce a lot of scrap steel. In addition, when all walks of life use a large amount of steel, they will inevitably produce various types of scrap steel. These scrap steels are recyclable raw materials for the steelmaking industry, especially the main raw materials for short-process electric furnace steelmaking.

[0003] When recycling scrap steel, it is necessary to cut the scrap steel so that its size meets the requirements of subsequent operations. However, the large amount, wide variety, varied shapes and sizes of scrap steel make it difficult to cut and process. In particular, the cutting of scrap steel coils has always been the most difficult task in scrap steel processing.

[0004] Scrap steel coils have disadvantages such as a wide range of sizes, gaps between plate surfaces, difficulty in cutting arc surfaces and annular end faces, difficulty in flame penetration, difficulty in collecting smoke and dust during cutting, and the possibility of head shaking accidents.

[0005] At present, there are two main ways to deal with cut scrap steel coils: 1) Stacking in the open air and cutting by hand. This processing method has the disadvantages of occupying a large area, high material loss, harsh environment, low cutting efficiency, and poor production conditions and working environment for employees; 2) Stockpiling in the workshop and cutting manually in the protective cover. This method has little impact on the external environment, but during the cutting process, since the cutting means are still relatively primitive, the steel coils can only be processed by hand-held cutting guns. Therefore, the cutting site processing environment is harsh and the labor intensity is high, which has a great harm to the operator's body and mind. In addition, the stockpiling processing capacity is limited, which is difficult to meet the requirements of medium and large steel plants.

[0006] At present, for the cutting operation of scrap steel coils, there is a mechanical cutting solution in which a cutting gun is installed on a movable device to replace manual cutting. For example, document 1 (Chinese invention patent with publication number CN115647518A) discloses a cutting gun lifting device for a cutting gun, and document 2 (Chinese utility model patent with publication number CN218555873U) discloses a manipulator device for a cutting gun. The simple combination of these devices can provide a mechanical scrap steel coil cutting solution that can be raised and lowered and has an adjustable angle.

[0007] However, the above cutting scheme still has the problem of a single cutting method, which can only provide cutting in a certain direction and can only cut in a straight line. However, the cutting of scrap steel coils also involves circumferential cutting, so the above cutting scheme cannot meet the requirements.

[0008] In addition, a large amount of cutting waste gas and dust will inevitably be generated during the cutting of scrap steel coils, so corresponding dust removal operations are required. The cutting operation of scrap steel coils needs to be carried out at a cutting station. However, in the prior art, the cutting station and its equipped dust removal system are all fixedly arranged, so each cutting station needs to be equipped with a dust removal system. When the scrap steel coil on the cutting station is cut, it is necessary to wait for the cutting station to complete the reloading and enter the cutting operation before cutting can be carried out again. Therefore, how to improve the cutting efficiency is also a problem that needs to be solved urgently. Summary of the invention

[0009] In view of the problem that the manual cutting method of scrap steel coils in the prior art is inefficient, while the mechanical cutting method is difficult to meet the requirements, the purpose of the present invention is to provide an automatic waste coil cutting device and method to at least partially solve the above problems.

[0010] To achieve the above object, the technical solution of the present invention is: In a first aspect, the present invention provides an automatic waste roll cutting device, comprising a walking cutting machine, a dust removal system arranged on the walking cutting machine, and at least two cutting stations arranged within the coverage of the walking cutting machine, each of the cutting stations being provided with a rotary worktable for driving the waste roll to rotate; the walking cutting machine comprises a trolley moving along an X direction, a trolley mounted on the trolley and moving along a Y direction relative to the trolley, a cutting gun lifting device mounted on the trolley, and a cutting gun mounted on an output end of the cutting gun lifting device; the cutting stations are arranged at intervals along the X direction.

[0011] In some preferred embodiments, the rotary workbench includes a base, a turntable and a rotary drive mechanism, the turntable is connected to the base via a rotary bearing, the rotary drive mechanism is fixedly mounted on the base, and the rotary drive mechanism is used to drive the turntable.

[0012] In some preferred embodiments, the slewing drive mechanism includes a reduction motor, a driving gear is fixed to the output shaft of the reduction motor, and the driving gear is meshed with the outer gear ring of the slewing bearing.

[0013] In some preferred embodiments, the cutting station is further provided with a supporting and positioning material table; the supporting and positioning material table includes a protective bottom plate fixed on the rotary workbench, a plurality of supporting members arranged on the protective bottom plate, and a locking mechanism for fixing the supporting members.

[0014] In some preferred embodiments, the locking mechanism includes a guide cone and movable stops that are the same in number as the support members, and a number of the support members are radially distributed with the guide cone as the center, and a corresponding slot matching the inner end of the support member is provided on the circumferential side wall of the guide cone; each of the movable stops is respectively arranged on one side of the outer end of each of the support members, and the movable stops are used to fix or release the outer end of the support member by flipping.

[0015] In some preferred embodiments, a manipulator device for adjusting the angle of the cutting gun is also installed on the output end of the cutting gun lifting device.

[0016] In some preferred embodiments, the dust removal system includes a dust collector, a dust hood, a dust removal lifting device, and a smoke and dust pipe connected between the dust collector and the dust hood. The dust collector and the dust removal lifting device are both installed on the trolley, and the dust hood is installed at the output end of the dust removal lifting device.

[0017] In a second aspect, the present invention further provides a method for automatically cutting waste rolls, the method being applied to the device as described above, and characterized in that the method comprises the following steps: Determine the current cutting station and hoist the waste roll to be cut onto the rotary table in the current cutting station; In response to the cutting start instruction, the large car in the walking cutting machine moves to the current cutting station, and the small car in the walking cutting machine moves to the current cutting station; The radial distance and the upper section edge distance of the waste roll to be cut are detected by a laser distance meter; The trolley, cutting gun lifting device and manipulator device move to make the cutting gun reach the preheating position as set; Turn on the energy medium for preheating, start cutting, and the cutting gun lifting device drives the cutting gun to perform the first radial cutting from high to low at the set speed. After the first radial cutting is completed, turn off the energy medium, and the cutting gun is driven by the cutting gun lifting device to return to the high position to wait for cutting; Start the rotary table to drive the waste roll to rotate circumferentially, so that the cutting gun moves to the second radial cutting position of the waste roll, turn on the energy medium, and the cutting gun lifting device drives the cutting gun to perform the second radial cutting from high to low at the set speed, and repeat the first radial cutting procedure to complete the second radial cutting; The above cutting process is repeated according to the set step length until the radial pass cutting of the waste roll is completed; Starting the cutting gun lifting device to drive the cutting gun to the first circumferential cutting position, wherein the first circumferential cutting position is located at the radial cutting seam; Turn on the energy medium for preheating, start cutting, keep the cutting gun still, start the rotary table and rotate it 360° at the set speed, complete the first circumferential cutting, and turn off the energy medium; Start the cutting gun lifting device to drive the cutting gun down to the second circumferential cutting position, and repeat the first circumferential cutting procedure to complete the second circumferential cutting; Repeat the above cutting process according to the required step length until the circumferential cutting of the waste roll is completed and all the waste rolls are cut; The trolley and cutting gun in the walking cutting machine return to the standby position, the large trolley moves to the next cutting station and repeats the above steps, and the current cutting station performs unloading and re-feeding operations.

[0018] In some preferred embodiments, the dust removal system is activated while the cutting torch is cutting to remove the cutting fumes.

[0019] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: due to the provision of the walking cutting machine and at least one cutting station, the cutting operations can be performed alternately between the cutting stations, so there is no need to wait for unloading and feeding, thereby improving the cutting efficiency; and due to the provision of the rotary worktable and the supporting and positioning material table in the cutting station, the scrap steel coil can be rotated, thereby ensuring that the cutting gun can perform both radial cutting and circumferential cutting on the scrap steel coil, thereby meeting the scrap steel coil cutting requirements and realizing mechanical substitution for manual cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the waste roll automatic cutting device of the present invention.

[0021] Figure 2 and Figure 3 They are schematic diagrams of the carriage located at different cutting stations in the waste roll automatic cutting device of the present invention.

[0022] Figure 4 It is a front view of the cutting gun lifting device in the present invention.

[0023] Figure 5 It is a side view of the cutting gun lifting device in the present invention.

[0024] Figure 6 It is a schematic diagram of the use of the supporting and positioning material table in the present invention.

[0025] Figure 7 This is a schematic diagram of the supporting and positioning material table of the present invention when not in use.

[0026] In the figure: 1-trolley, 101-gantry frame, 102-trolley travel motor, 103-side sealing plate, 104-lifting door, 2-trolley, 3-cutting gun lifting device, 31-servo motor, 32-reducer, 33-frame, 34-lifting transmission, 35-lifting mechanism, 4-manipulator device, 5-cutting gun, 6-dust collector, 7-dust hood, 8-base, 9-turntable, 10-slewing bearing, 11-slewing drive mechanism, 12-protective bottom plate, 13-support, 14-guide cone, 15-movable stopper. DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are descriptions of the structure of the present invention based on the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] The "first" and "second" in this technical solution are only used to distinguish the names of the same or similar structures, or corresponding structures with similar functions, and are not an arrangement of the importance of these structures, nor do they have a ranking, comparison of size, or other meanings.

[0030] In addition, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the two structures. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the overall idea of ​​the present invention and the specific context of the present solution.

[0031] Example 1 like Figure 1-3 As shown, an embodiment of the present invention discloses an automatic waste roll cutting device, including a walking cutting machine and at least two cutting stations located within the coverage area of ​​the walking cutting machine. This embodiment takes two as examples for description.

[0032] In this embodiment, the walking cutting machine is configured to include a large vehicle 1 that moves along the X direction relative to the ground, a small vehicle 2 installed on the large vehicle 1 and moving along the Y direction relative to the large vehicle 1, a cutting gun lifting device 3 installed on the small vehicle 2 and moving along the Z direction, a cutting gun manipulator 4 installed on the output end of the lifting device 3, and a cutting gun 5 installed on the cutting gun manipulator 4. The X, Y, and Z directions indicate that the device has three directions of movement along the conventional space coordinate system. The above two cutting stations are arranged at intervals along the X direction.

[0033] The trolley 1 includes two gantry frames 101 arranged at intervals along its travel direction. The tops of the two gantry frames 101 are connected by metal profiles, and the top platform of the trolley 1 can be built based on the metal profiles. Four track wheels are installed at the bottom of both sides of the gantry frames 101, and they move along the trolley tracks set on the ground. At the same time, the gantry frames 101 are equipped with trolley travel motors 102 (or reduction motors) for driving the track wheels. The trolley 2 is arranged on the top platform of the trolley 1. The trolley 2 includes a frame with wheels, and a trolley driving mechanism for driving the wheels is installed on the frame. Accordingly, a trolley track for supporting the travel of the trolley 2 is laid on the top platform of the trolley 1.

[0034] Specific as Figure 4-5 As shown, the cutting gun lifting device 3 is installed on the trolley 2, and the trolley 2 is provided with a reducer 32 driven by a servo motor 31. After the servo motor 31 is working, it drives the gear on the output end of the reducer 32 to rotate. At the same time, a fixed rack parallel to the trolley track is laid on the trolley 1. After the fixed rack and the gear on the output end of the reducer 32 are meshed with each other, the trolley 2 can be driven to move. The cutting gun lifting device 3 includes a frame 33, a lifting transmission 34 and a lifting mechanism 35. The frame 33 is fixed on the trolley 2, and the lifting mechanism 35 is connected to the frame 33 in a sliding manner along the Z direction. The lifting transmission 34 is fixed on the frame 33, and its output end is connected to the lifting mechanism 35, so that the lifting mechanism 35 is driven by the lifting transmission 34 to move along the Z direction on the frame 33.

[0035] In this embodiment, both the trolley 1 and the trolley 2 are equipped with drag chains, and the energy medium for cutting (such as natural gas or hydrogen and oxygen) as well as the power supply and control cables are laid through the drag chains.

[0036] The manipulator device 4 installed on the output end of the cutting gun lifting device 3 is used to adjust the angle of the cutting gun 5. The manipulator device 4 is configured as a manipulator device for cutting guns disclosed in document 2 (CN218555873U), which will not be described in detail in this embodiment.

[0037] It is understandable that the side sealing plates 103 are fixedly installed on both sides of the gantry frame 101 of the trolley 1, and the lifting doors 104 are set at both ends of the trolley 1 along its travel. When it is necessary to switch the cutting station, the lifting door 104 is raised to avoid the steel coil, and then falls after it is in place, so that the lifting door 104 and the side sealing plates 103 and the top platform of the trolley 1 form a relatively closed space to prevent the slag from splashing during cutting, and it is also conducive to the dust removal system to absorb dust. Among them, the top platform of the trolley 1 will leave a through hole for the cutting gun lifting device 3 to pass through and move in the Y direction.

[0038] In the embodiment of the present invention, the dust removal system includes a dust collector 6, a dust removal lifting device, a dust hood 7, and a smoke and dust pipeline connected between the dust collector 6 and the dust hood 7.

[0039] Among them, the dust collector 6 and the dust removal lifting device are both fixedly installed on the top platform of the trolley 1, and the dust hood 7 is located in a relatively closed space surrounded by the lifting door 104, the side sealing plate 103 and the top platform of the trolley 1, and the dust hood 7 is fixed on the output end of the dust removal lifting device, and is driven to lift and lower by the dust removal lifting device. The dust removal lifting device can be configured as an electric cylinder, a hydraulic cylinder or an electro-hydraulic cylinder. In this way, the dust hood 7 can be adapted to waste rolls to be cut of different heights and sizes, so that the distance between it and the waste rolls is maintained at an optimal level, thereby ensuring that the dust removal system can maintain a good dust removal effect. Correspondingly, the smoke and dust pipeline is usually configured as a fire-blocking hose, so that when the height position of the dust hood 7 changes, the smoke and dust pipeline will not be pulled and damaged.

[0040] In addition, in order to simplify the structure, the present embodiment further arranges an ash box (not shown in the figure) on the cart 1, and the ash box is connected to the ash discharge port of the dust collector 6. Such an arrangement makes it unnecessary to connect a pipeline for conveying dust between the ground and the walking cutting machine, and only the ash box needs to be cleaned regularly.

[0041] In this embodiment, each cutting station is provided with a rotary worktable and a supporting and positioning material table.

[0042] The rotary table is used to drive the waste rolls in the cutting station to rotate around the vertical axis, so as to realize the circumferential cutting of the waste rolls and cut the waste rolls into multiple sections along the axis direction. The rotary table specifically includes a base 8, a turntable 9, a slewing bearing 10 and a slewing drive mechanism 11. In order to reduce the placement height of the waste rolls, the rotary table is usually installed in a pit on the ground, and usually only the top surface of the turntable 9 is exposed to the ground.

[0043] The base 8 is fixedly installed at the bottom of the ground pit by bolts. The turntable 9 is connected to the base 8 through the slewing bearing 10, and the slewing drive mechanism 11 is fixedly installed on the base 8. For example, the slewing drive mechanism 11 is configured as a reduction motor, and a driving gear is fixed on the output shaft of the reduction motor (that is, the output shaft of the reducer), and the driving gear is meshed with the outer gear ring of the slewing bearing 10.

[0044] The support and positioning material platform is arranged on the turntable 9, and the support and positioning material platform is used to support and position the waste roll. Figure 6-7 As shown, the supporting and positioning material table specifically includes a protective bottom plate 12, a support member 13, a guide cone 14 and a locking mechanism.

[0045] The protective bottom plate 12 is configured as a metal plate structure, such as a steel plate, which is detachably mounted on the top surface of the turntable 9 by bolts or screws, and is used to protect the turntable 9 and prevent the cutting flame from damaging the turntable 9. The support member 13 is placed on the protective bottom plate 12, and is used to support the waste roll, and a certain distance is left between the bottom surface of the waste roll and the protective bottom plate 12. There are usually multiple support members 13, such as four, and the support members 13 are configured as long strips of metal profiles, such as long strips of square steel. The guide cone 14 is detachably connected to the top surface of the protective base plate 12, for example, by a threaded connection. At the same time, the guide cone 14 is located at the center of the multiple support members 13, that is, the above-mentioned four support members 13 are radially distributed with the guide cone 14 as the center. In addition, four card grooves are evenly spaced on the circumferential side wall of the guide cone 14. The shape and size of the card grooves are adapted to the inner end of the support member 13 (the end close to the guide cone 14) (that is, the card grooves are square), so that the position of the inner end of the support member 13 is limited by the guide cone 14 (the support members 13 can all move along the square away from the guide cone 14).

[0046] The locking mechanism is used to fix or release the position of the support member 13 with the cooperation of the guide cone 14, so that the support member 13 does not slip on the protective bottom plate 12, thereby maintaining the position of the waste roll stable. The locking mechanism specifically includes the same number of movable stoppers 15 as the number of the support members 13, that is, four. When in use, the outer end of the support member 13 is fixed by flipping the movable stopper 15, such as Figure 6 As shown, and unlocking the outer end of the support member 13, as shown Figure 7 shown.

[0047] The working process of the waste roll automatic cutting device provided by the embodiment of the present invention is as follows: Determine the station to be cut → hoist the waste roll to be cut onto the support and positioning material table in the station to be cut → start cutting command → the trolley 1 of the walking cutting machine moves to the waste roll along the X direction → the trolley 2 of the walking cutting machine moves to the waste roll along the Y direction → the cutting gun lifting device 3 drives the cutting gun 5 to move vertically, so that the cutting gun 5 reaches the preheating position → the cutting gun 5 is preheated → start cutting → the cutting gun 5 performs the first radial cutting from high to low at the set speed, and while cutting is in progress, the dust removal system is started to remove the cutting smoke → the first radial cutting is completed → the energy medium is turned off → the cutting gun 5 is driven by the cutting gun lifting device 3 to return to the high position to be cut → the waste roll is driven to rotate circumferentially through the rotary table, so that the cutting gun 5 moves to the second radial cutting position of the waste roll → repeat the cutting process from top to bottom to complete the second radial cutting → repeat the above cutting process according to the set step length until the waste roll is cut into multiple pieces along its circumferential direction; After the vertical cutting operation is completed, the cutting gun 5 is driven by the cutting gun lifting device 3 to move to the first circumferential cutting position (and is located at the vertical cutting seam) → turn on the energy medium for preheating → start cutting → the cutting gun 5 remains stationary, and the rotary table rotates one circle at the set speed → the first circumferential cutting is completed → turn off the energy medium → the cutting gun 5 is driven by the cutting gun lifting device 3 to move to the second circumferential cutting position → the second circumferential cutting is completed according to the same process as the first circumferential cutting → the control repeats the above cutting process according to the required step length until the waste roll is cut into multiple sections along its axial direction → all the waste rolls are cut, the cutting gun 5 is turned off, the cutting gun lifting device 3 and the trolley 2 return to the standby position → the trolley 1 moves to another cutting station to repeat the above process, and the current cutting station performs unloading and material distribution operations.

[0048] Example 2 An embodiment of the present invention provides a method for automatically cutting a waste roll. The method is applied to the automatic waste roll cutting device provided in the above embodiment. The method includes the following steps.

[0049] S1. Determine the current cutting station and hoist the waste roll to be cut onto the rotary table in the current cutting station; S2. In response to the cutting start command, the large car in the walking cutting machine runs to the current cutting station, and the small car in the walking cutting machine runs to the current cutting station; S3. The radial distance and the upper section edge distance of the waste roll to be cut are detected by a laser rangefinder; S4. The trolley, cutting gun lifting device and manipulator device move to make the cutting gun reach the preheating position as set; S5. Turn on the energy medium for preheating and start cutting. The cutting gun lifting device drives the cutting gun to perform the first radial cutting from high to low at the set speed. After the first radial cutting is completed, turn off the energy medium and the cutting gun is driven by the cutting gun lifting device to return to the high position for cutting; S6. Start the rotary table to drive the waste roll to rotate circumferentially, so that the cutting gun moves to the second radial cutting position of the waste roll, turn on the energy medium, and the cutting gun lifting device drives the cutting gun to perform the second radial cutting from high to low at the set speed, and repeat the first radial cutting procedure to complete the second radial cutting; S7. Repeat the above cutting process according to the set step length until the radial pass cutting of the waste roll is completed; S8. Start the cutting gun lifting device to drive the cutting gun to the first circumferential cutting position, wherein the first circumferential cutting position is located at the radial cutting seam; S9. Turn on the energy medium for preheating, start cutting, keep the cutting gun still, start the rotary table and rotate it 360° at the set speed, complete the first circumferential cutting, and turn off the energy medium; S10. Start the cutting gun lifting device, drive the cutting gun down to the second circumferential cutting position, repeat the first circumferential cutting procedure to complete the second circumferential cutting; S11. Repeat the above cutting process according to the required step length until the circumferential cutting of the waste roll is completed and all the waste rolls are cut; S12. The trolley and cutting gun in the walking cutting machine return to the standby position, and the large trolley moves to the next cutting station and repeats the above steps. The current cutting station performs unloading and re-feeding operations.

[0050] In addition, the dust removal system is started while the cutting gun is cutting to remove the cutting smoke.

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A waste roll automatic cutting device, characterized in that: The invention comprises a walking cutting machine, a dust removal system arranged on the walking cutting machine and at least two cutting stations arranged within the coverage of the walking cutting machine, wherein each of the cutting stations is provided with a rotary worktable for driving the waste roll to rotate; the walking cutting machine comprises a large car moving along the X direction, a small car installed on the large car and moving along the Y direction relative to the large car, a cutting gun lifting device installed on the small car and a cutting gun installed on the output end of the cutting gun lifting device; the cutting stations are arranged at intervals along the X direction.

2. The waste roll automatic cutting device according to claim 1 is characterized in that: The rotary workbench comprises a base, a turntable and a rotary drive mechanism. The turntable is connected to the base via a rotary bearing. The rotary drive mechanism is fixedly mounted on the base, and the rotary drive mechanism is used to drive the turntable.

3. The waste roll automatic cutting device according to claim 2 is characterized in that: The rotary drive mechanism comprises a reduction motor, an output shaft of which is fixed with a driving gear, and the driving gear is meshed with the outer gear ring of the rotary support.

4. The waste roll automatic cutting device according to claim 1 is characterized in that: The cutting station is also provided with a supporting and positioning material table; the supporting and positioning material table includes a protective bottom plate fixed on the rotary workbench, a plurality of supporting members arranged on the protective bottom plate, and a locking mechanism for fixing the supporting members.

5. The waste roll automatic cutting device according to claim 4 is characterized in that: The locking mechanism includes a guide cone and movable stops that are the same in number as the support members, and a number of the support members are radially distributed with the guide cone as the center, and the circumferential side walls of the guide cone are correspondingly provided with slots that are adapted to the inner ends of the support members; each of the movable stops is respectively arranged on one side of the outer end of each of the support members, and the movable stops are used to fix or release the outer ends of the support members by flipping.

6. The waste roll automatic cutting device according to claim 1 is characterized in that: A manipulator device for adjusting the angle of the cutting gun is also installed on the output end of the cutting gun lifting device.

7. The waste roll automatic cutting device according to claim 1 is characterized in that: The dust removal system includes a dust collector, a dust hood, a dust removal lifting device, and a smoke and dust pipeline connected between the dust collector and the dust hood. The dust collector and the dust removal lifting device are both installed on the trolley, and the dust hood is installed at the output end of the dust removal lifting device.

8. A method for automatically cutting waste rolls, the method being applied to the device according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: Determine the current cutting station and hoist the waste roll to be cut onto the rotary table in the current cutting station; In response to the cutting start instruction, the large vehicle in the walking cutting machine moves to the current cutting station, and the small vehicle in the walking cutting machine moves to the current cutting station; The radial distance and the upper section edge distance of the waste roll to be cut are detected by a laser distance meter; The trolley, cutting gun lifting device and manipulator device move to make the cutting gun reach the preheating position as set; Turn on the energy medium for preheating, start cutting, and the cutting gun lifting device drives the cutting gun to perform the first radial cutting from high to low at the set speed. After the first radial cutting is completed, turn off the energy medium, and the cutting gun is driven by the cutting gun lifting device to return to the high position to wait for cutting; Start the rotary table to drive the waste roll to rotate circumferentially, so that the cutting gun moves to the second radial cutting position of the waste roll, turn on the energy medium, and the cutting gun lifting device drives the cutting gun to perform the second radial cutting from high to low at the set speed, and repeat the first radial cutting procedure to complete the second radial cutting; The above cutting process is repeated according to the set step length until the radial pass cutting of the waste roll is completed; Starting the cutting gun lifting device to drive the cutting gun to the first circumferential cutting position, wherein the first circumferential cutting position is located at the radial cutting seam; Turn on the energy medium for preheating, start cutting, keep the cutting gun still, start the rotary table and rotate it 360° at the set speed, complete the first circumferential cutting, and turn off the energy medium; Start the cutting gun lifting device to drive the cutting gun down to the second circumferential cutting position, and repeat the first circumferential cutting procedure to complete the second circumferential cutting; Repeat the above cutting process according to the required step length until the circumferential cutting of the waste roll is completed and all the waste rolls are cut; The trolley and cutting gun in the walking cutting machine return to the standby position, the large trolley moves to the next cutting station and repeats the above steps, and the current cutting station performs unloading and re-feeding operations.

9. The method according to claim 8, characterized in that: The dust removal system is activated while the cutting gun is cutting to remove the cutting fumes.

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