A numerical control shearing machine for waste steel processing pretreatment

Abstract

The present invention relates to the technical field of shearing equipment, and specifically discloses a numerically controlled shearing machine for scrap steel processing pretreatment, which includes a frame and a bed body. The frame includes a tool rest, an upper blade and a matching lower blade. The upper blade and the lower blade can be pressed together to shear waste coils. The bed body is arranged across the tool rest, and the bed body includes a main board and a short side board. There is a gap between the main board and the short side board, and the gap is used for the installation of a medium-frequency water-cooled electromagnetic induction heater. A rear stop component is installed on the side of the main board facing away from the short side board, and an auxiliary straightening component that can translate along the length direction of the bed body is installed in the rear stop component. The present invention can greatly facilitate the shearing operation of the device on waste coils, greatly reduce the situation of the coil bouncing during shearing, and can prevent the small segments of the coil from bouncing after shearing by sucking and fixing both sides of the waste coil, which is convenient for the discharging and collection of the small segments of the coil after shearing.

Description

Technical Field

[0001] The present invention belongs to the technical field of shearing equipment, and particularly relates to a numerically controlled shearing machine for preprocessing scrap steel processing. Background Art

[0002] A shearing machine is a device used for shearing metal sheets and is widely used in the metal processing industry. It is also widely used in scrap steel recycling. Currently, a commonly used shearing machine is used to shear long waste coils, and after shearing them into small sheets with a length of 1.5 meters, they are stacked and collected, which can also facilitate the further recycling of scrap steel.

[0003] However, when shearing waste coils currently, due to the large deformation resistance of the coils, it is easy to have the situation of popping and bouncing after shearing, resulting in problems such as unsmooth feeding and unsmooth discharging of the material, and it is also easy to cause accidental injuries to personnel. Summary of the Invention

[0004] The purpose of the present invention is to provide a numerically controlled shearing machine for preprocessing scrap steel processing, so as to solve the problems that when shearing waste coils in the prior art, it is easy to have popping and bouncing, and further cause problems such as unsmooth feeding and unsmooth discharging.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A numerically controlled shearing machine for preprocessing scrap steel processing includes a frame and a bed. The frame includes a tool rest, an upper blade and a matching lower blade. The upper blade and the lower blade can cooperate to shear waste coils. The bed is arranged across the tool rest, and the bed includes a main board and a short side board. There is a gap between the main board and the short side board, and the gap is used for installing a medium-frequency water-cooled electromagnetic induction heater; on the side of the main board facing away from the short side board, a rear stop component is installed for positioning the shearing length of the waste coil. An auxiliary straightening component that can translate along the length direction of the bed is installed in the rear stop component, and on the side of the short side board facing away from the medium-frequency water-cooled electromagnetic induction heater, at least two roller pressing components are installed to preliminarily flatten the waste coil. The auxiliary straightening component is used to cooperate with the roller pressing components to further flatten the waste coil to be sheared; an electromagnetic suction and fixation component is also installed on the rear stop component. The electromagnetic suction and fixation component is on the side of the tool rest facing away from the medium-frequency water-cooled electromagnetic induction heater, and is used to suck and fix both sides of the waste coil to prevent the small coils after shearing from popping and bouncing, facilitating the discharging and collection of the small coils after shearing.

[0007] Preferably: The roller pressing component includes two symmetrically arranged mounting supports and two roller columns arranged one above the other. Rotating shafts are fixedly inserted in the middle of the two roller columns, and adjustable support seats are sleeved and installed at the ends of the rotating shafts. The adjustable support seats can be installed at different positions and heights of the mounting supports in cooperation with fastening bolts, so as to preliminarily roll and flatten waste coils with different thicknesses.

[0008] Preferably, the rear stock stop assembly includes two mounting brackets symmetrically installed on both side edges of the tool rest. A stock stop seat is jointly installed on the two mounting brackets. A recovery groove matching the auxiliary straightening assembly is formed on the side of the stock stop seat close to the tool rest. An extension plate flush with the top of the stock stop seat is installed on the side of the stock stop seat away from the tool rest to support the position movement of the electromagnetic suction and fixation assembly.

[0009] Preferably, the auxiliary straightening assembly includes a bead pressing member and two first cylinders. The two first cylinders penetrate through the stock stop seat for fixation. The bead pressing member includes a movable seat. An installation groove is formed on the side of the movable seat away from the stock stop seat. A row of rolling sleeves is arranged in the installation groove. The rolling sleeves are all rotatably connected to the installation groove through pin shafts. Two second cylinders are symmetrically installed on the top of the movable seat. Upper movable pressing blocks are fixed to the output ends of the two second cylinders. Two lower fixed scraping blades matched with the two upper movable pressing blocks are installed on the side of the movable seat. The bottom surfaces of the two lower fixed scraping blades are flush with the bottom surface of the movable seat.

[0010] Preferably, the ends of the lower fixed scraping blades facing away from the movable seat are all set as scraping slope surfaces, which is convenient for clamping after shoveling up the end of the waste coil.

[0011] Preferably, the ends of the upper movable pressing blocks close to the stock stop seat are all provided with attaching sliding grooves adapted to the cross-sectional shapes of a plurality of rolling sleeves opposite thereto, which can avoid the rotational interference with the rolling sleeves when the upper movable pressing blocks vertically move in the vertical direction.

[0012] Preferably, the electromagnetic suction and fixation assembly includes a movable plate. An X-Y translation slider is installed on the side of the movable plate. An X-Y translation track for the X-Y translation slider to move is embedded and installed on the top of the stock stop seat. An installation cross beam is fixedly installed on the movable plate. Side frames are fixedly connected to both ends of the installation cross beam. Strip-shaped frames are arranged below the side frames. Electromagnets are installed on the bottom surfaces of the strip-shaped frames. A group of third cylinders matched with the strip-shaped frames below are spacedly installed on both side frames to control the timely lifting of the two electromagnets and avoid the movement interference with the bead pressing member.

[0013] Preferably, a driving motor for driving the rotation is correspondingly installed at the end of each rotating shaft. The driving motor is attached to the adjustable support seat closest to it through a motor mounting bracket. The output end of the driving motor and the end of the rotating shaft are sequentially connected through a speed reducer and a coupling; and a roller bearing for supporting the rotation of the rotating shaft is arranged in each adjustable support seat.

[0014] Preferably, the short side plate is fixed to the side of the intermediate-frequency water-cooled electromagnetic induction heater through a reinforcing rib, avoiding the unsupported setting of the short side plate; the waste coil can pass through the intermediate-frequency water-cooled electromagnetic induction heater under the pulling of the auxiliary straightening component, and the intermediate-frequency water-cooled electromagnetic induction heater is used to locally heat the part of the waste coil that needs to be sheared, thereby reducing the shear stress and further reducing the probability of the coil bouncing during the shearing process.

[0015] Preferably, a strip-shaped groove for placing the lower blade is formed on the surface of the main board. Both the upper blade and the lower blade are driven by hydraulic cylinders. The hydraulic cylinder connected to the upper blade is installed on the top of the tool rest, and the hydraulic cylinder connected to the lower blade is installed in the strip-shaped groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The present invention utilizes several pre-set rolling components to initially level the waste coil. Then, with the clamping of the edge pressing member and the pulling effect of the two first cylinders, the further leveling of the waste coil can be achieved, facilitating the shearing operation of the device on the waste coil and reducing the occurrence of the coil bouncing during the shearing process.

[0018] 2. Through the setting of the intermediate-frequency water-cooled electromagnetic induction heater in the main board and the short side plate, the present invention locally heats the part of the waste coil that needs to be sheared by using the intermediate-frequency water-cooled electromagnetic induction heater. This can reduce the shear stress and further reduce the probability of the coil bouncing during the shearing process.

[0019] 3. After the edge pressing member pulls the waste coil close to the material blocking seat, two electromagnets are lowered to suck and fix both sides of the waste coil, preventing the small section of the coil after shearing from bouncing. Then, the two upper movable pressing blocks move upward to release the small section of the coil after shearing, and the two electromagnets follow the movable plate to first translate to the side away from the intermediate-frequency water-cooled electromagnetic induction heater, and then translate to the other end of the rear material blocking component, so as to facilitate the discharging and collection of the small section of the coil after shearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a side view of the present invention;

[0021] Figure 2 is a perspective view of the present invention;

[0022] Figure 3 is a top view of the connection relationship of the main components of the frame, bed, intermediate-frequency water-cooled electromagnetic induction heater, rear material blocking component, auxiliary straightening component, and electromagnetic suction fixing component of the present invention;

[0023] Figure 4 is a schematic structural diagram of the edge pressing member of the present invention;

[0024] Figure 5 It is a schematic diagram of the connection of the rear stop component and the electromagnetic suction and fixing component of the present invention;

[0025] Figure 6 It is a structural split diagram of the rear stop component and the electromagnetic suction and fixing component of the present invention;

[0026] Figure 7 It is a state diagram when the electromagnetic suction and fixing component of the present invention slides to the other end of the rear stop component.

[0027] In the figure:

[0028] 1. Frame; 11. Tool rest; 12. Upper blade; 13. Lower blade;

[0029] 2. Bed body; 21. Main board; 22. Short side plate;

[0030] 3. Roller pressing component; 31. Installation support; 32. Adjustable support seat; 33. Rotating shaft; 34. Roller column; 35. Driving motor;

[0031] 4. Intermediate frequency water-cooled electromagnetic induction heater;

[0032] 5. Rear stop component; 51. Installation frame; 52. Stop seat; 521. Recycling groove; 522. X-Y translation track; 53. Extension board;

[0033] 6. Auxiliary straightening component; 61. First cylinder; 62. Edge pressing part; 621. Movable seat; 6211. Installation groove; 622. Rolling sleeve; 623. Lower fixed shovel blade; 6231. Shovel slope surface; 624. Second cylinder; 625. Upper movable pressing block; 6251. Fitting sliding groove;

[0034] 7. Electromagnetic suction and fixing component; 71. Movable plate; 711. X-Y translation slider; 72. Installation cross beam; 73. Side frame; 74. Third cylinder; 75. Strip-shaped frame; 76. Electromagnet. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Refer to Figures 1-3As shown in the figure, the present invention provides a numerically controlled shearing machine for the pre-treatment of scrap steel processing, which includes a frame 1 and a bed 2. The frame 1 includes a tool rest 11, an upper blade 12 and a matching lower blade 13. A strip-shaped groove for placing the lower blade 13 is formed on the surface of the main board 21. The upper blade 12 and the lower blade 13 are both driven by hydraulic cylinders. The hydraulic cylinder connected to the upper blade 12 is installed on the top of the tool rest 11, and the hydraulic cylinder connected to the lower blade 13 is installed in the strip-shaped groove. The upper blade 12 and the lower blade 13 can shear the waste coil when they are pressed together. The bed 2 is arranged across the tool rest 11, and the bed 2 includes a main board 21 and short side plates 22. There is a gap between the main board 21 and the short side plates 22 for installing the intermediate frequency water-cooled electromagnetic induction heater 4. The intermediate frequency water-cooled electromagnetic induction heater 4 can locally heat the part of the waste coil that needs to be sheared, and control the temperature at 350 - 400 °C, which can effectively reduce the shearing stress. A rear stop component 5 is installed on the side of the main board 21 facing away from the short side plates 22 for positioning the shearing length of the waste coil. According to the actual processing requirements, the position of the stop seat 52 on the mounting frame 51 can be finely adjusted, specifically by the loose and tight fit of common fasteners, which will not be elaborated here as it is a mature existing technology, so as to position and obtain different shearing lengths. An auxiliary straightening component 6 that can translate along the length direction of the bed 2 is installed in the rear stop component 5, and at least two roller pressing components 3 are installed on the side of the short side plates 22 facing away from the intermediate frequency water-cooled electromagnetic induction heater 4 to preliminarily level the waste coil. The auxiliary straightening component 6 is used to cooperate with the roller pressing components 3 to further level the waste coil to be sheared. Among them, the short side plates 22 are fixed to the side of the intermediate frequency water-cooled electromagnetic induction heater 4 through reinforcing ribs to prevent the short side plates 22 from being suspended without support. The waste coil can pass through the intermediate frequency water-cooled electromagnetic induction heater 4 under the pulling of the auxiliary straightening component 6, and the intermediate frequency water-cooled electromagnetic induction heater 4 is used to locally heat the part of the waste coil that needs to be sheared, thereby reducing the shearing stress and further reducing the probability of the coil bouncing during shearing. An electromagnetic suction and fixing component 7 is also installed on the rear stop component 5. The electromagnetic suction and fixing component 7 is located on the side of the tool rest 11 facing away from the intermediate frequency water-cooled electromagnetic induction heater 4 and is used to suck and fix both sides of the waste coil to prevent the small cut coil from bouncing. Then, the pressing piece 62 releases the small cut coil, and the electromagnetic suction and fixing component 7 drives the small cut coil through two translations to the other end of the rear stop component 5. This can facilitate the discharging and collection of the small cut coil after shearing, and also facilitate the subsequent recycling and reuse of the pre-treated waste coil, comprehensively ensuring smooth feeding and discharging, avoiding jamming, greatly improving the efficiency of the shearing operation, and reducing the probability of personal accidental injuries.

[0037] Specifically, in order to achieve the purpose of preliminary leveling of waste coils, the rolling assembly 3 includes two symmetrically arranged mounting brackets 31 and two rollers 34 arranged in sequence from top to bottom. The middle parts of the two rollers 34 are fixedly inserted with rotating shafts 33. The ends of the rotating shafts 33 are sleeved with adjustable supports 32. The adjustable supports 32 can be installed at different positions and heights of the mounting brackets 31 in cooperation with fastening bolts, so as to preliminarily roll and level waste coils of different thicknesses. By adjusting the distance between the two rollers 34 in the same mounting bracket 31, the purpose of preliminary leveling of waste coils of different thicknesses can be achieved. Among them, a driving motor 35 for driving its rotation is correspondingly installed at the end of each rotating shaft 33. The driving motor 35 is attached to the nearest adjustable support 32 through a motor mounting bracket. The output end of the driving motor 35 is connected to the end of the rotating shaft 33 through a reducer and a coupling in sequence. After the driving motor 35 is started, it can drive the roller 34 to rotate, achieving the purpose of preliminary leveling and rolling and feeding. Among them, the rotation directions of the two rollers 34 in the same mounting bracket 31 are opposite. And a roller bearing for supporting the rotation of the rotating shaft 33 is arranged in each adjustable support 32 to support the radial load during the rotation of the rotating shaft 33 and improve the stability of the rotation of the rotating shaft 33 and the roller 34.

[0038] In a further embodiment, referring to Figures 2-7 As shown, the rear stop component 5 includes two mounting frames 51 symmetrically installed on both sides of the tool rest 11. A stop seat 52 is jointly installed on the two mounting frames 51. The stop seat 52 is arranged parallel to the tool rest 11. A recovery groove 521 matching the auxiliary straightening component 6 is opened on the side of the stop seat 52 close to the tool rest 11. And an extension plate 53 flush with the top of the stop seat 52 is installed on the side of the stop seat 52 away from the tool rest 11 to support the position movement of the electromagnetic suction and fixing component 7.

[0039] In this embodiment, the recovery groove 521 is for accommodating the edge pressing member 62 after reset. The reset of the edge pressing member 62 is to pull the coil for feeding. The distance from the stop seat 52 to the upper blade 12, that is, the distance from the edge pressing member 62 to the upper blade 12, can be used as a reference for positioning the shearing length of the waste coil.

[0040] In a further embodiment, referring to Figures 2-4As shown in the figure, the auxiliary straightening assembly 6 includes a hemming member 62 and two first cylinders 61. The two first cylinders 61 penetrate through the material stop seat 52 for fixation. When the first cylinders 61 are retracted to the shortest length, they will not protrude into the recovery groove 521, facilitating the reset of the movable seat 621 to be placed in the recovery groove 521. This ensures that the distance from the hemming member 62 to the upper blade 12 is the same as the distance from the material stop seat 52 to the upper blade 12, facilitating the positioning of the cutting length of the waste coil. The hemming member 62 includes a movable seat 621. On the side of the movable seat 621 away from the material stop seat 52, an installation groove 6211 is provided. A row of rolling sleeves 622 is arranged in the installation groove 6211. The rolling sleeves 622 are all rotatably connected to the installation groove 6211 through pin shafts. A row of rotatable rolling sleeves 622 can cooperate with the electromagnetic suction and fixation assembly 7 to suck and drive the translation of the small section of the coil after cutting. The end of the small section of the coil after cutting abuts against this row of rolling sleeves 622, enabling the smooth realization of the material discharging purpose, greatly reducing the probability of jamming, and having strong practicability. On the top of the movable seat 621, two second cylinders 624 are symmetrically installed. The output ends of the two second cylinders 624 are both fixed with upper movable pressing blocks 625. And on the side of the movable seat 621, two lower fixed shovel blades 623 that are matched with the two upper movable pressing blocks 625 are installed. The bottom surfaces of the two lower fixed shovel blades 623 are flush with the bottom surface of the movable seat 621. In this way, the telescopic movement of the output ends of the second cylinders 624 can achieve the purpose of clamping and fixing and releasing the ends of the waste coil by the upper movable pressing blocks 625 and the lower fixed shovel blades 623;

[0041] At the ends of the lower fixed shovel blades 623 facing away from the movable seat 621, shovel slope surfaces 6231 are provided, similar to the front-end design of a shovel, which is convenient for shoveling up the ends of the waste coil and then clamping, reducing manual intervention and improving the operation efficiency.

[0042] It should be particularly mentioned that on the ends of the upper movable pressing blocks 625 close to the material stop seat 52, a number of sticking chutes 6251 that are adapted to the cross-sectional shapes of the corresponding rolling sleeves 622 are provided, which can avoid the rotational interference with the rolling sleeves 622 when the upper movable pressing blocks 625 move vertically.

[0043] In this embodiment, the hemming member 62 clamps the ends of the waste coil. Cooperating with the pulling effect of the two first cylinders 61, on the basis of the setting of the rolling press assembly 3, the further straightening and leveling purpose of the waste coil can be achieved, thereby facilitating the cutting operation of the device on the waste coil and reducing the situation of the coil bouncing during the cutting process.

[0044] In a further embodiment, referring to Figures 5-7The electromagnetic suction component 7 includes a movable plate 71, an XY translation slider 711 is installed on the side of the movable plate 71, and an XY translation track 522 for the movement of the XY translation slider 711 is embedded on the top of the material blocking seat 52. The XY translation track 522 is designed and manufactured with reference to the electric slide rail in the prior art, but has two-way translation considerations, and the XY translation slider 711 can walk along an L-shaped path therein. A mounting beam 72 is fixedly installed on the movable plate 71, and both ends of the mounting beam 72 are fixedly connected to side frames 73. Strip frames 75 are arranged under the side frames 73, and electromagnets 76 are installed on the bottom surface of the strip frames 75. The electromagnets 76 are switched between the magnetic attraction and release states by turning on and off the power. Figure 3 In the state shown, the end of the electromagnet 76 close to the medium frequency water-cooled electromagnetic induction heater 4 is within the range of the knife holder 11. In order to achieve a wider suction and fixation purpose for the small section of coiled material after shearing and further reduce the possibility of coil rebound, the suction and fixation span of the electromagnet 76 is made as close as possible to the length of the small section of coiled material after shearing, and a group of third cylinders 74 matching the strip frame 75 below are installed on the two side frames 73 at intervals to control the timely lifting and lowering of the two electromagnets 76 to avoid interference with the movement of the edge clamp 62. Specifically, after the shearing is completed, the two upper movable The pressing block 625 moves upward, and the two electromagnets 76 are lowered to fix the small section of coil obtained by shearing, and both sides of the small section of coil are fixed. Then, in conjunction with the L-shaped walking path of the movable plate 71, the two electromagnets 76 can be first moved close to the end of the medium-frequency water-cooled electromagnetic induction heater 4 and pulled out from the tool holder 11. Then, the end of the small section of coil is against a row of rolling sleeves 622, and it can be translated to the other end of the rear stop assembly 5. After it is in place, the electromagnet 76 is powered off and loses its magnetism, and the small section of coil falls down and can be collected in the material box, thereby completing the purpose of returning and collecting the small section of coil after shearing.

[0045] In this embodiment, after the edge clamp 62 pulls the waste coil close to the material blocking seat 52, the two electromagnets 76 are lowered. The two electromagnets 76 are energized to generate magnetic attraction, which can widely attract and fix the two sides of the waste coil, in order to prevent the small sections of the coil from breaking after shearing. Then, the two upper movable pressing blocks 625 loosen the small sections of the coil after shearing, and the two electromagnets 76 follow the movable plate 71 to first translate to the side away from the medium frequency water-cooled electromagnetic induction heater 4, and then translate to the other end of the rear stop assembly 5, that is, move along the L-shaped path, thereby achieving the purpose of smoothly returning the small sections of the coil after shearing, reducing the occurrence of material jamming, and also facilitating its collection and putting it into the next stage of recycling and reuse of the waste coil (scrap steel).

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC shearing machine for scrap steel processing and pretreatment, comprising a frame and a bed, wherein the frame comprises a tool holder, an upper blade and a matching lower blade, and the upper blade and the lower blade can shear the scrap coil when pressed together, characterized in that: The bed is arranged across the tool holder, and the bed includes a main board and a short side board, and a gap is reserved between the main board and the short side board, and the gap is used for installing the medium-frequency water-cooled electromagnetic induction heater; A rear stopper assembly is installed on the side of the main board facing away from the short side board, which is used to locate the shearing length of the waste coils. An auxiliary straightening assembly that can be translated along the length direction of the bed is installed in the rear stopper assembly. At least two roller pressing assemblies are installed on the side of the short side board facing away from the medium frequency water-cooled electromagnetic induction heater to perform preliminary flattening of the waste coils. The auxiliary straightening assembly is used to cooperate with the roller pressing assembly to further flatten the waste coils to be sheared. The rear stopper assembly is also equipped with an electromagnetic suction assembly, which is located on the side of the knife holder facing away from the medium-frequency water-cooled electromagnetic induction heater and is used to suction and fix both sides of the waste coil to prevent the small coil from breaking after shearing, and facilitate the return and collection of the small coil after shearing; The two wheels are provided with two guide rails which are respectively provided with two guide rails and two cams, and the two guide rails are provided with two guide rails respectively. The electromagnetic suction assembly includes a movable plate, an XY translation slider is installed on the side of the movable plate, and an XY translation track for the XY translation slider to move is embedded on the top of the material blocking seat, a mounting crossbeam is fixedly installed on the movable plate, both ends of the mounting crossbeam are fixedly connected to side frames, strip frames are arranged below the side frames, electromagnets are installed on the bottom surfaces of the strip frames, and a group of third cylinders matching the strip frames below are installed at intervals on the two side frames, which are used to control the timely lifting and lowering of the two electromagnets to avoid interference with the movement of the edge pressing piece; Among them, the short side plate is fixed to the side of the medium frequency water-cooled electromagnetic induction heater through reinforcing ribs to prevent the short side plate from being suspended without support; the waste coil can pass through the medium frequency water-cooled electromagnetic induction heater under the pulling of the auxiliary straightening component, and the medium frequency water-cooled electromagnetic induction heater is used to locally heat the parts of the waste coil that need to be sheared, thereby reducing the shear stress and further reducing the probability of the coil breaking during the shearing process.

2. The CNC shearing machine for scrap steel processing and pretreatment according to claim 1 is characterized in that: The rolling assembly includes two symmetrically arranged mounting supports and two rollers arranged in sequence up and down. A rotating shaft is fixedly inserted in the middle of the two rollers, and an adjustable supporting seat is sleeved and installed at the ends of the rotating shaft. The adjustable supporting seat can be installed at different positions and heights of the mounting supports in cooperation with fastening bolts, so that waste coils of different thicknesses can be preliminarily rolled and leveled.

3. The CNC shearing machine for scrap steel processing and pretreatment according to claim 1 is characterized in that: The ends of the lower fixed shovel blades facing away from the movable seat are all arranged as shoveling edge slope surfaces, so as to facilitate clamping the ends of the waste coils after shoveling them up.

4. The CNC shearing machine for scrap steel processing and pretreatment according to claim 1 is characterized in that: The upper movable pressing block is provided with a sliding groove matching the cross-sectional shape of a plurality of rolling sleeves facing it at one end close to the material blocking seat, so as to avoid interference with the rotation of the rolling sleeves when the upper movable pressing block moves vertically.

5. The CNC shearing machine for scrap steel processing and pretreatment according to claim 2 is characterized in that: A driving motor for driving the rotation of each rotating shaft is installed at the end thereof. The driving motor is attached to the adjustable support seat closest to it through a motor mounting bracket, and the output end of the driving motor is connected to the end of the rotating shaft through a reducer and a coupling in sequence; and a roller bearing for supporting the rotation of the rotating shaft is arranged in each adjustable support seat.

6. The CNC shearing machine for scrap steel processing and pretreatment according to claim 1 is characterized in that: The surface of the main board is provided with a strip groove for accommodating the lower blade. The upper blade and the lower blade are driven by hydraulic cylinders. The hydraulic cylinder connected to the upper blade is installed on the top of the tool holder, and the hydraulic cylinder connected to the lower blade is installed in the strip groove.

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