Fixed-angle cutting equipment for cold rolled steel machining

Abstract

The invention discloses fixed-angle cutting equipment for cold rolled steel machining, and relates to the technical field of steel plate cutting, the fixed-angle cutting equipment comprises a conveying device and a support arranged at the output end of the conveying device, the support is provided with a rotary collecting device and a bearing plate, and the bearing plate is provided with a rotary groove; the top of the rotating collecting device penetrates through the rotating groove and is flush with the surface of the bearing plate, a follow-up frame is arranged on one side of the rotating collecting device, and a follow-up limiting device and a lifting cutting device are arranged on the follow-up frame. When the lifting cutting device cuts a steel plate, the follow-up limiting device covers the lifting cutting device to limit scattering of chippings, meanwhile, the chippings are collected into the rotary collecting device through wind power, and the problem that the steel plate is exposed in air during cutting and consequently the chippings are scattered is solved. And the problem that workers are injured due to the fact that the chippings fly away when the chippings are collected through wind power is solved.

Description

Technical Field

[0001] The invention relates to the technical field of steel plate cutting, and in particular to a fixed-angle cutting device for cold-rolled steel processing. Background Art

[0002] Cold rolled steel is steel produced by cold rolling. Cold rolling is to further thin the steel plate to the target thickness at room temperature. Compared with hot rolled steel, the thickness of cold rolled steel is more precise, the surface is smoother, and it also has various excellent mechanical properties. Cold rolled steel needs to be cut when it is used.

[0003] When cold-rolled steel is cut and there are requirements for the cutting angle, most of the time, the cold-rolled steel is cut manually at a fixed angle. However, a large amount of debris is generated during the cutting process, and the cutting error is large. The existing invention patent with patent publication number CN118237662A discloses a fixed-angle cutting device and a cutting method for cold-rolled steel processing. While cutting, the cold-rolled steel can be cut at a fixed angle and the waste generated by the cutting can be collected by adopting a limiting conveying structure, two fixed structures, an adjustable dust collection structure and a cutting structure to prevent the waste from splashing.

[0004] However, the above invention patent also has corresponding defects: when the cutting device is cutting cold-rolled steel, the contact position between the cutting device and the cold-rolled steel is in an exposed state, so that the debris generated by the cutting device when cutting the cold-rolled steel will fly into the air. Although there is an exhaust fan to generate wind to collect the debris, the wind cannot directional limit all the debris. Some debris will fly around under the action of the cutting device and the wind, and cause harm to the surrounding workers. Summary of the invention

[0005] The purpose of the present invention is to provide a fixed-angle cutting device for cold-rolled steel processing, which solves the technical problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A fixed-angle cutting device for cold-rolled steel processing, comprising a conveying device and a bracket arranged at the output end of the conveying device, the bracket is provided with a rotating collection device capable of rotating in a straight line in a vertical direction and a bearing plate for bearing a steel plate, a rotating groove is provided on the bearing plate, the top of the rotating collection device passes through the rotating groove and is flush with the surface of the bearing plate, a follower frame is provided on one side of the rotating collection device, a follower limiting device for limiting the flying of debris and a lifting cutting device capable of lifting in a vertical direction are provided on the follower limiting device, and the follower limiting device is rotatably connected to the bearing plate, and a fixing device for pressing down and fixing the steel plate is provided on the bearing plate;

[0008] When the lifting and cutting device enters the follow-up limiting device to cut the steel plate, the top of the follow-up limiting device can reduce the path size for the lifting and cutting device to enter, and collect debris into the rotating collection device through wind power.

[0009] As a preferred solution of the present invention, the rotating collection device includes a support frame arranged on a bracket, a rotating device is arranged on the support frame, and the rotation centerline of the rotating device is perpendicular to the horizontal plane, a collecting box is arranged on the rotating device, a discharge port is arranged on the outer side wall of the collecting box, a collecting port is opened on the top of the collecting box, and the top of the collecting box passes through the rotating groove and is flush with the upper surface of the supporting plate, and the follower frame is arranged on the outer wall of the collecting box.

[0010] As a preferred solution of the present invention, the follow-up limiting device includes two supports symmetrically arranged on the carrying plate, and the symmetry center lines of the two supports are parallel to the conveying direction of the conveying device, and the two supports are commonly and movably connected with an annular plate that can rotate around the rotation center line of the collecting box, and the annular plate is connected to the follow-up frame through a connecting plate, the vertical center line of the annular plate coincides with the rotation center line of the collecting box, a support plate is provided on the outer side wall of the annular plate, a closing structure is provided on the support plate, and the closing structure is used to close the top part of the annular plate when the lifting and cutting device cuts the steel plate.

[0011] As a preferred solution of the present invention, the closed structure includes a bidirectional motion device arranged on a support plate, and two cover plates are symmetrically arranged on the bidirectional motion device, both of which are slidably connected to the support plate. The top of each cover plate is provided with an avoidance groove for the lifting and cutting device to pass through, and each cover plate is provided with multiple air outlets inside, and the multiple air outlets on each cover plate are connected to an air pump through a pipe.

[0012] As a preferred solution of the present invention, the top of each of the cover plates is slidably connected to a follower plate, and the sliding direction of the follower plate is perpendicular to the movement direction of the cover plate and parallel to the direction in which the lifting and cutting device cuts the steel plate. The two follower plates are connected on opposite sides to each other with springs connected to the top of the corresponding cover plates, and the length direction of the springs is parallel to the sliding direction of the follower plate. Each of the follower plates is provided with a through groove for the lifting and cutting device to pass through, and the inner wall of each of the follower plates is provided with a plurality of air ports, and the plurality of air ports on each of the follower plates are connected to the air pump through a pipe.

[0013] As a preferred solution of the present invention, both sides of the lifting and cutting device are rotatably connected with a driving plate for abutting against the inner wall of the through groove through a torsion spring, a synchronization rod is provided on the side wall opposite to the other follower plate, and a socket for inserting the synchronization rod is provided on the other follower plate.

[0014] As a preferred solution of the present invention, two arc-shaped guide plates are symmetrically arranged inside the annular plate.

[0015] As a preferred solution of the present invention, the lifting and cutting device includes a first moving device which is arranged on a follower frame and moves in a vertical direction, a lifting plate which is slidably connected to the follower frame is arranged on the first moving device, a second moving device which moves in a horizontal direction is arranged at the bottom of the lifting plate, a cutting assembly is arranged on the second moving device, and the synchronization rod is arranged on the outer wall of the cutting assembly.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention controls the rotation of a rotating collection device to adjust the cutting angle of a lifting and cutting device, and when the lifting and cutting device cuts a steel plate, covers the outside of the lifting and cutting device with a follow-up limiting device to limit the scattering of debris, and collects the debris into the rotating collection device through wind force, thereby avoiding the problem of debris scattering due to exposure to air during steel plate cutting, and avoiding the problem of workers being injured due to the scattering of debris when the debris is collected by wind force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 An overall structural schematic diagram of a fixed-angle cutting device for cold-rolled steel processing from a first perspective is provided for an embodiment of the present invention;

[0020] Figure 2 An overall structural schematic diagram of a second viewing angle of a fixed-angle cutting device for cold-rolled steel processing is provided for an embodiment of the present invention;

[0021] Figure 3 A partial structural schematic diagram of a fixed-angle cutting device for cold-rolled steel processing is provided for an embodiment of the present invention;

[0022] Figure 4A partial cross-sectional structural schematic diagram of a fixed-angle cutting device for cold-rolled steel processing is provided for an embodiment of the present invention;

[0023] Figure 5 Provided for embodiments of the present invention Figure 2 An enlarged schematic diagram of the structure of part A is shown in FIG.

[0024] The numbers in the figure represent the following:

[0025] 1. Conveying device; 2. Bracket; 4. Carrying plate; 5. Rotating trough; 6. Rotating collecting device; 7. Follow-up limiting device; 8. Follow-up frame; 9. Lifting and cutting device; 10. Fixing device;

[0026] 601, support frame; 602, rotating device; 603, collecting box; 604, discharge port; 605, collecting port; 701, support; 702, annular plate; 704, support plate; 705, closed structure; 706, two-way motion device; 707, cover plate; 708, avoidance groove; 709, air outlet; 710, follower plate; 711, spring; 712, through groove; 713, blowing port; 714, driving plate; 715, synchronization rod; 716, jack; 717, arc guide plate; 901, first moving device; 902, lifting plate; 903, second moving device; 904, cutting assembly. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 5 As shown, the present invention provides a fixed-angle cutting device for cold-rolled steel processing, comprising a conveying device 1 and a bracket 2 arranged at the output end of the conveying device 1, the bracket 2 is provided with a rotating collection device 6 that can rotate linearly around the vertical direction and a bearing plate 4 for bearing a steel plate, the bearing plate 4 is provided with a rotating groove 5, the top of the rotating collection device 6 passes through the rotating groove 5 and is flush with the surface of the bearing plate 4, a follower frame 8 is provided on one side of the rotating collection device 6, the follower frame 8 is provided with a follower limiting device 7 for limiting the flying of debris and a lifting cutting device 9 that can be lifted and lowered in the vertical direction, and the follower limiting device 7 is rotatably connected to the bearing plate 4, and the bearing plate 4 is provided with a fixing device 10 for pressing down and fixing the steel plate;

[0029] When the lifting and cutting device 9 enters the follow-up limiting device 7 to cut the steel plate, the top of the follow-up limiting device 7 can reduce the path size for the lifting and cutting device 9 to enter, and collect debris into the rotating collection device 6 through wind force.

[0030] In actual application of the present application, cold-rolled steel (hereinafter referred to as steel plate) is transported to the supporting plate 4 through the conveying device 1, and the top of the steel plate is pressed down by the fixing device 10 to fix the steel plate on the supporting plate 4. Then, according to the cutting requirements, the rotating collection device 6 is started and rotated around a vertical line. At the same time, the lifting and cutting device 9 and the follow-up limiting device 7 are driven to rotate through the follow-up frame 8, so as to adjust the cutting angle of the lifting and cutting device 9.

[0031] When the cutting angle of the lifting and cutting device 9 is adjusted to the set value, the rotating collecting device 6 stops moving, and then the lifting and cutting device 9 moves downward to contact the steel plate and cuts the steel plate. At the same time, the follow-up limiting device 7 is reduced to a path size at its top that can allow the lifting and cutting device 9 to pass through, so as to limit the passage of debris generated when the lifting and cutting device 9 cuts the steel plate, so that the generated debris is located in the follow-up limiting device 7 and falls into the rotating collecting device 6 for collection, avoiding the problem of debris flying and being difficult to collect, and avoiding the problem of debris flying and causing harm to workers when the prior art collects debris by wind force.

[0032] Since both the lifting and cutting device 9 and the follow-up limiting device 7 rotate synchronously with the rotating collecting device 6 , it is ensured that the path on the follow-up limiting device 7 for the lifting and cutting device 9 to pass through always corresponds to the lifting and cutting device 9 .

[0033] The top of the rotating collecting device 6 passes through the rotating groove 5 and is flush with the surface of the carrying plate 4 to ensure that the steel plate is subjected to a relatively uniform supporting force when cutting.

[0034] In this embodiment, the conveying device 1 and the fixing device 10 are both existing technologies. For example, the conveying device 1 can be a belt conveyor, etc., and the fixing device 10 can drive the pressure plate to press down the steel plate through a hydraulic push rod to fix the steel plate.

[0035] The rotating collection device 6 includes a support frame 601 arranged on the bracket 2, a rotating device 602 is arranged on the support frame 601, and the rotation center line of the rotating device 602 is perpendicular to the horizontal plane, a collecting box 603 is arranged on the rotating device 602, a discharge port 604 is arranged on the outer wall of the collecting box 603, a collecting port 605 is opened on the top of the collecting box 603, and the top of the collecting box 603 passes through the rotating groove 5 and is flush with the upper surface of the supporting plate 4, and the follower frame 8 is arranged on the outer wall of the collecting box 603.

[0036] The rotating device 602 drives the collection box 603 to rotate linearly around the vertical direction, thereby driving the lifting and cutting device 9 and the follower limiting device 7 to rotate synchronously through the follower frame 8, so that the path for the lifting and cutting device 9 to pass through the follower limiting device 7 always corresponds to the lifting and cutting device 9.

[0037] The collecting box 603 collects the debris generated when the steel plate is cut through the collecting port 605, and the collecting port 605 is for the lifting and cutting device 9 to enter when cutting the steel plate, so as to avoid the lifting and cutting device 9 from damaging the collecting box 603 when cutting the steel plate to the other side. That is, the collecting port 605 is opened along the cutting direction of the lifting and cutting device 9 to avoid damage to the collecting box 603, and the discharging port 604 is for the debris collected in the collecting box 603 to pass through.

[0038] In this embodiment, the rotating device 602 is a conventional technology, such as a motor, which directly drives the collecting box 603 to rotate.

[0039] The follow-up limiting device 7 includes two supports 701 symmetrically arranged on the supporting plate 4, and the symmetry center lines of the two supports 701 are parallel to the conveying direction of the conveying device 1, and the two supports 701 are commonly and movably connected with an annular plate 702 that can rotate around the rotation center line of the collecting box 603, and the annular plate 702 is connected to the follow-up frame 8 through a connecting plate, and the vertical center line of the annular plate 702 coincides with the rotation center line of the collecting box 603, and a support plate 704 is arranged on the outer wall of the annular plate 702, and a closing structure 705 is arranged on the support plate 704, and the closing structure 705 is used to close the top part of the annular plate 702 when the lifting and cutting device 9 cuts the steel plate.

[0040] When the rotating device 602 drives the collection box 603 to drive the follower frame 8 to move, the follower frame 8 drives the annular plate 702 to move on the two supports 701 through the connecting plate. By setting two symmetrical supports 701 to support the annular plate 702, a certain distance is made between the annular plate 702 and the surface of the supporting plate 4, so that there is space for the steel plate to pass through on the supporting plate 4, so as to ensure that the steel plate can pass under the annular plate 702 for subsequent cutting processing.

[0041] When the annular plate 702 rotates, the support plate 704 and the closing structure 705 rotate at the same time. After the lifting and cutting device 9 moves downward into the annular plate 702, the closing structure 705 closes the top part of the annular plate 702, that is, avoids the position of the lifting and cutting device 9, and closes the part outside the lifting and cutting device 9 to limit the debris generated when the lifting and cutting device 9 cuts the steel plate from splashing to the outside of the annular plate 702, thereby avoiding the debris from flying and being difficult to clean, and avoiding the problem of injuries to workers due to the flying of debris.

[0042] The closed structure 705 includes a two-way motion device 706 arranged on a support plate 704, and two cover plates 707 are symmetrically arranged on the two-way motion device 706, both of which are slidably connected to the support plate 704. The top of each cover plate 707 is provided with an avoidance groove 708 for the lifting and cutting device 9 to pass through. Each cover plate 707 is provided with a plurality of air outlets 709 inside, and the plurality of air outlets 709 on each cover plate 707 are connected to an air pump through a pipeline.

[0043] After the lifting and cutting device 9 enters the annular plate 702, the bidirectional motion device 706 drives the two cover plates 707 to slide on the support plate 704 until the two cover plates 707 abut against each other, so that the two cover plates 707 jointly close the space above the annular plate 702, thereby preventing the debris generated when the lifting and cutting device 9 cuts the steel plate from flying everywhere, and the wind blown out through the air outlet 709 blows towards the debris splashed in the annular plate 702, accelerating the debris to fall to the steel plate and the collection port 605.

[0044] The avoidance groove 708 can avoid interference with the movement of the lifting and cutting device 9, thereby ensuring the normal operation of the lifting and cutting device 9.

[0045] The top of each cover plate 707 is slidably connected to a follower plate 710, and the sliding direction of the follower plate 710 is perpendicular to the movement direction of the cover plate 707 and parallel to the direction in which the lifting and cutting device 9 cuts the steel plate. The opposite sides of the two follower plates 710 are connected to springs 711 connected to the top of the corresponding cover plate 707, and the length direction of the spring 711 is parallel to the sliding direction of the follower plate 710. Each follower plate 710 is provided with a through groove 712 for the lifting and cutting device 9 to pass through. The inner wall of each follower plate 710 is provided with a plurality of blowing ports 713, and the plurality of blowing ports 713 on each follower plate 710 are connected to an air pump through a pipe.

[0046] Since the steel plate has a certain width, the lifting and cutting device 9 will move along the width direction of the steel plate to cut the steel plate. If the avoidance groove 708 is long, debris will splash out from here. By setting a follower plate 710 on the top of the cover plate 707, after the two cover plates 707 move toward each other and contact each other, the two follower plates 710 also contact each other. The through grooves 712 on the two follower plates 710 are interconnected into a whole for the lifting and cutting device 9 to pass through, so as to ensure the normal operation of the lifting and cutting device 9, and the gas blown out through the air port 713 gathers debris to accelerate collection, while preventing debris from flying.

[0047] When the lifting and cutting device 9 moves in the horizontal direction to cut the steel plate, the lifting and cutting device 9 presses against the inner wall of the through slot 712, so that the two follower plates 710 follow the lifting and cutting device 9 to slide on the cover plate 707, and the two springs 711 are deformed at the same time. After the lifting and cutting device 9 cuts the steel plate and moves to the initial position, the follower plate 710 is also reset to the initial position under the elastic force of the spring 711, and the deformation of the spring 711 is zero, so that the lifting and cutting device 9 will pass through the through slot 712 each time it descends to cut the steel plate, and will not interfere with the cover plate 707 and the follower plate 710.

[0048] In this embodiment, the length of the through groove 712 in the direction in which the lifting and cutting device 9 cuts the steel plate is smaller than the length of the avoidance groove 708 .

[0049] Both sides of the lifting and cutting device 9 are rotatably connected with a driving plate 714 for abutting against the inner wall of the through slot 712 through a torsion spring, a synchronization rod 715 is provided on the side wall opposite to the other follower plate 710, and a socket 716 for inserting the synchronization rod 715 is provided on the other follower plate 710.

[0050] When the two follower plates 710 move toward each other until they abut against each other, the synchronization rod 715 is inserted into the insertion hole 716, so that the two follower plates 710 can move synchronously. At this time, when the two driving plates 714 on the lifting and cutting device 9 abut against the inner wall of the through groove 712, the driving plate 714 is squeezed by the inner wall of the through groove 712 and rotates. As the lifting and cutting device 9 continues to descend, the rotation angle of the driving plate 714 gradually increases until the lifting and cutting device 9 abuts against the steel plate. In the process of the lifting and cutting device 9 moving horizontally to cut the steel plate, one of the driving plates 714 squeezes the through groove 712 on the corresponding side, so that the follower plates 710 move synchronously, avoiding the lifting and cutting device 9 directly contacting the inner wall of the through groove 712 and causing damage to the follower plate 710 (for example, the lifting and cutting device 9 cuts the follower plate 710, etc.).

[0051] Two arc-shaped guide plates 717 are symmetrically arranged inside the annular plate 702 .

[0052] It is used to guide the debris in the annular plate 702 to slide down along the arc surface of the arc guide plate 717 to the collecting port 605 and enter the collecting box 603 through the collecting port 605 .

[0053] The lifting and cutting device 9 includes a first moving device 901 which is arranged on the follower frame 8 and moves in the vertical direction. A lifting plate 902 which is slidably connected to the follower frame 8 is arranged on the first moving device 901. A second moving device 903 which moves in the horizontal direction is arranged at the bottom of the lifting plate 902. A cutting assembly 904 is arranged on the second moving device 903, and a synchronization rod 715 is arranged on the outer wall of the cutting assembly 904.

[0054] The height of the lifting plate 902 is adjusted by the first moving device 901, thereby adjusting the height of the cutting assembly 904 or moving away from the steel plate after cutting the steel plate. The second moving device 903 drives the cutting assembly 904 to move in a horizontal direction to cut off the steel plate.

[0055] In this embodiment, the first moving device 901 and the second moving device 903 are both existing technologies, such as a screw driven by a motor, etc. The bidirectional motion device 706 is also existing technology, such as a bidirectional screw driven by a motor to drive the two cover plates 707 to move in the same speed and opposite directions, etc. The cutting component 904 is also existing technology, such as a cutting blade driven by a motor to cut a steel plate, etc. The technical principles will not be elaborated on here.

[0056] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. An angle cutting device for cold rolled steel processing, comprising a conveying device (1) and a bracket (2) arranged at the output end of the conveying device (1), characterized in that: The support (2) is provided with a rotating collection device (6) capable of rotating linearly in a vertical direction and a bearing plate (4) for bearing a steel plate, the bearing plate (4) is provided with a rotating groove (5), the top of the rotating collection device (6) passes through the rotating groove (5) and is flush with the surface of the bearing plate (4), a follower frame (8) is provided on one side of the rotating collection device (6), the follower frame (8) is provided with a follower limiting device (7) for limiting the flying of debris and a lifting cutting device (9) capable of lifting and lowering in a vertical direction, and the follower limiting device (7) is rotatably connected to the bearing plate (4), and the bearing plate (4) is provided with a fixing device (10) for pressing down and fixing the steel plate; When the lifting and cutting device (9) enters the follow-up limiting device (7) to cut the steel plate, the top of the follow-up limiting device (7) can reduce the size of the path for the lifting and cutting device (9) to enter, and collect debris into the rotating collection device (6) through wind power.

2. The fixed angle cutting device for cold rolled steel processing according to claim 1, characterized in that: The rotating collection device (6) comprises a support frame (601) arranged on a bracket (2), a rotating device (602) being arranged on the support frame (601), and the rotation center line of the rotating device (602) is perpendicular to a horizontal plane, a collecting box (603) is arranged on the rotating device (602), a discharge port (604) is arranged on the outer side wall of the collecting box (603), a collecting port (605) is opened on the top of the collecting box (603), and the top of the collecting box (603) passes through the rotating groove (5) and is flush with the upper surface of the supporting plate (4), and the follower frame (8) is arranged on the outer wall of the collecting box (603).

3. The fixed angle cutting device for cold rolled steel processing according to claim 2, characterized in that: The follow-up limiting device (7) includes two supports (701) symmetrically arranged on the supporting plate (4), and the symmetrical center lines of the two supports (701) are parallel to the conveying direction of the conveying device (1), and the two supports (701) are commonly and movably connected with an annular plate (702) that can rotate around the rotation center line of the collecting box (603), and the annular plate (702) is connected to the follow-up frame (8) through a connecting plate, and the vertical center line of the annular plate (702) coincides with the rotation center line of the collecting box (603), and a support plate (704) is arranged on the outer wall of the annular plate (702), and a closing structure (705) is arranged on the support plate (704), and the closing structure (705) is used to close the top part of the annular plate (702) when the lifting and cutting device (9) cuts the steel plate.

4. The fixed angle cutting device for cold rolled steel processing according to claim 3, characterized in that: The closed structure (705) includes a bidirectional motion device (706) arranged on a support plate (704), and two cover plates (707) are symmetrically arranged on the bidirectional motion device (706), both of which are slidably connected to the support plate (704), and each of the cover plates (707) is provided with an avoidance groove (708) on the top for the lifting and cutting device (9) to pass through, and each of the cover plates (707) is provided with a plurality of air outlets (709) inside, and the plurality of air outlets (709) on each of the cover plates (707) are connected to an air pump through a pipeline.

5. The fixed angle cutting device for cold rolled steel processing according to claim 4, characterized in that: The top of each cover plate (707) is slidably connected to a follower plate (710), and the sliding direction of the follower plate (710) is perpendicular to the movement direction of the cover plate (707) and parallel to the direction in which the lifting and cutting device (9) cuts the steel plate. The two opposite sides of the two follower plates (710) are connected to springs (711) connected to the top of the corresponding cover plate (707), and the length direction of the spring (711) is parallel to the sliding direction of the follower plate (710). Each follower plate (710) is provided with a through groove (712) for the lifting and cutting device (9) to pass through. The inner wall of each follower plate (710) is provided with a plurality of air blowing ports (713), and the plurality of air blowing ports (713) on each follower plate (710) are connected to an air pump through a pipeline.

6. The fixed angle cutting device for cold rolled steel processing according to claim 5, characterized in that: Both sides of the lifting and cutting device (9) are rotatably connected to a driving plate (714) for abutting against the inner wall of the through slot (712) via a torsion spring, a synchronization rod (715) is arranged on the side wall opposite to the other follower plate (710), and a socket (716) for inserting the synchronization rod (715) is provided on the other follower plate (710).

7. The fixed angle cutting device for cold rolled steel processing according to claim 3, characterized in that: Two arc-shaped guide plates (717) are symmetrically arranged inside the annular plate (702).

8. The fixed angle cutting device for cold rolled steel processing according to claim 6, characterized in that: The lifting and cutting device (9) comprises a first moving device (901) which is arranged on a follower frame (8) and moves in a vertical direction, a lifting plate (902) which is slidably connected to the follower frame (8) is arranged on the first moving device (901), a second moving device (903) which moves in a horizontal direction is arranged at the bottom of the lifting plate (902), a cutting assembly (904) is arranged on the second moving device (903), and the synchronization rod (715) is arranged on the outer wall of the cutting assembly (904).

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