Steel plate transecting shear sizing mechanism

Abstract

The invention relates to a steel plate transecting shear sizing mechanism, and belongs to the field of steel plate rolling treatment. Comprising a fixing module, a walking module and a swinging module, and the swinging module rotates around the walking module through a telescopic unit of the walking module; when the telescopic unit is shortened, the swing frame rotates around the rotating end and is lifted to an initial position; a baffle is arranged at the end, close to the feeding direction of the roller way, of the swing frame and is perpendicular to the roller way, and when the swing frame falls on the roller way, the baffle is attached to the upper surface of the roller way. The device is small and simple in structure, is arranged on one side of a transverse cutting shear roller way, solves the problem that the occupied space is large, prevents a steel plate from rebounding backwards due to rigid impact when the steel plate stops by arranging the buffer unit and the reverse pushing type hydraulic cylinder, improves the sizing precision, and can realize short ruler positioning.

Description

Technical Field

[0001] The invention belongs to the field of steel plate rolling processing and relates to a steel plate cross-cutting and sizing mechanism. Background Art

[0002] After hot rolling, the strip steel is generally subjected to finishing operations such as straightening, trimming, head and tail trimming, and cut-to-length segmentation to form the final plate product. Cut-to-length segmentation is usually sheared by cross-cutting shears. Common cross-cutting shears include hydraulic guillotine shears, rolling shears, drum shears, and crank shears. Hydraulic guillotine shears and rolling shears are stop shears, while drum shears and crank shears are motion shears. When the steel plate is cut to length, the cut length is determined according to the product specifications. Depending on the form of the cross-cutting shear, the length measurement methods are different. For motion shears, the cut-to-length length of the steel plate is usually measured by speed tracking calculation, electrical detection elements (such as laser length measuring instruments) and non-contact length measurement. For stop shears, in addition to the length measurement method of motion shears, manual ruler measurement, automatic measurement of mechanical cut-to-length baffles and other methods can also be used. Some production lines also use a combination of the above length measurement methods. The automatic measurement method of mechanical fixed-length baffle is very common in steel plate production, especially in medium and thick plate production lines, due to its high reliability, high degree of automation, and high measurement accuracy. At present, the commonly used mechanical fixed-length baffle (or fixed-length machine) structure is a gantry type, and its base is fixedly installed on both sides of the output roller of the cross-cut shear. The fixed-length running mechanism spans above the output roller of the cross-cut shear and is supported by the fixed base on both sides. There are tracks on the base. The fixed-length running mechanism is driven by a motor or a hydraulic motor to move on the track according to the fixed-length position. When it moves to the fixed-length position, it brakes or locks. The lifting baffle on the fixed-length running mechanism drops to the baffle position. When the steel plate passes through the cross-cut shear, it is blocked by the fixed-length baffle and stops at the fixed-length position. Then the cross-cut shear performs fixed-length shearing. After shearing, the lifting baffle rises to make way for the steel plate to pass, and the steel plate cut to the fixed length continues to be transported downstream. However, the aforementioned sizing machine has many defects during use: it occupies a large space, which affects the convenience of inspection and maintenance of the output roller below and the cross-cutting shear at the rear; the equipment itself is complex, the failure rate is high, and the inspection and maintenance work is large; when the steel plate is stopped by the baffle, it usually rebounds backwards due to rigid impact, which reduces the sizing accuracy and may even lead to waste in severe cases; the structure is huge, and the sizing mechanism cannot be close to the cutting line of the cross-cutting shear, resulting in the inability to achieve short-length positioning.

[0003] Therefore, it is urgent to propose corresponding solutions to solve the problems existing in the above-mentioned sizing machines, optimize the steel plate rolling process, and improve the processing efficiency. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a steel plate cross-cutting shear sizing mechanism, which can be arranged on the side of the cross-cutting shear roller, occupies a small space, and reduces the rebound effect of the steel plate after rigidly colliding with the baffle.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A steel plate cross-cutting shearing and sizing mechanism, comprising a fixed module, the running module is movably arranged on the fixed module, the running module comprises a running frame and a telescopic unit with one end fixedly arranged on the running frame, the other end of the telescopic unit is rotatably connected to the swing module, and the radial direction of the telescopic unit is perpendicular to the moving direction of the running module;

[0007] The swing module includes a swing frame rotatably connected to the telescopic unit. When the telescopic unit is extended, the swing frame falls into a working position on the roller below; when the telescopic unit is shortened, the swing frame rotates around its rotating end and is lifted to an initial position; a baffle is provided at one end of the swing frame close to the material feeding direction of the roller, and the baffle is perpendicular to the roller. When the swing frame falls on the roller, the baffle fits against the upper surface of the roller.

[0008] Optionally, the fixed module includes a base and a guide rail arranged on the base; a bearing matching the guide rail is arranged at the bottom of the running frame, and the movement of the running module on the fixed module is achieved through the bearing.

[0009] Optionally, the fixing module further includes a brake pad on the base and parallel to the guide rail, and a brake unit cooperating with the brake pad is provided at the bottom of the running frame to facilitate braking of the running frame.

[0010] Optionally, the braking unit is a brake groove with adjustable groove width, and the brake groove is clamped on both sides of the brake pad; the groove width of the brake groove is adjustable, and when the running frame moves on the guide rail, the groove width of the brake groove is greater than the thickness of the brake pad, and when the running frame moves to a predetermined position, the groove width of the brake groove is reduced to clamp the brake pad, thereby braking the running frame.

[0011] Optionally, buffer units are respectively provided at both ends of the guide rail to play a buffering role when the running module moves to the end of the guide rail.

[0012] Optionally, the fixed module also includes a rack arranged on the base and parallel to the guide rail; the bottom of the running frame is also provided with a gear meshing with the rack, and a driving unit driving the gear to rotate, and the gear rotates and moves on the rack, driving the running frame to move on the rack.

[0013] Optionally, the swing frame is provided with a through hole opening toward the baffle, a guide rod is movably arranged in the through hole, and the first connecting beam is connected to the swing frame via the guide rod; a buffer is arranged on the first connecting beam to buffer the movement of the guide rod in the through hole; the baffle is arranged on the side of the first connecting beam away from the swing frame.

[0014] Optionally, a reverse thrust hydraulic cylinder and a second connecting beam are sequentially arranged at one end of the swing frame away from the first connecting beam. When the steel plate to be sheared impacts the baffle, the piston rod in the reverse thrust hydraulic cylinder extends out to cooperate with the buffer to play a secondary buffering role.

[0015] Optionally, a first hinge ear is provided at one end of the telescopic unit connected to the swing frame, and a first hinge shaft matching therewith is provided on the swing frame; a second hinge shaft is provided at one end of the swing frame close to the running frame, and a second hinge ear matching therewith is provided on the running frame; the first hinge ear is rotatably connected to the first hinge shaft, and the second hinge ear is rotatably connected to the second hinge shaft, so as to jointly realize the rotation of the swing frame around the running frame.

[0016] Optionally, a side of the baffle plate close to the roller conveyor below is tooth-shaped, and an upper surface of the roller conveyor is also configured to be tooth-shaped to fit the baffle plate.

[0017] The beneficial effects of the present invention are:

[0018] The overall structure of the present invention is compact and simple, light in weight, and has obvious economic benefits; the cut-to-length baffle can reach the cross-cut shear working position to achieve zero-length positioning, and the cut-to-length range is not limited by the relative position of the equipment structure; it occupies a small space and is arranged on the side of the cross-cut shear output roller, which does not affect the inspection and maintenance of the main line equipment. This mechanism runs less time above the roller, and only the swing module is located above the roller during operation, which greatly reduces the risk of lubricating oil from the moving parts of the equipment overflowing and falling onto the steel plate below. The cut-to-length baffle is provided with a buffer unit, which greatly reduces the rebound effect of the steel plate after the rigid impact of the baffle, and a reverse thrust hydraulic cylinder is used for secondary adjustment to improve the cut-to-length accuracy.

[0019] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 This is the overall composition diagram of the steel plate cross-cutting shearing machine sizing mechanism;

[0022] Figure 2 It is a schematic diagram of the fixed module;

[0023] Figure 3 This is a schematic diagram of the running module;

[0024] Figure 4 It is a schematic diagram of the swing module;

[0025] Figure 5 It is a side view of the brake unit;

[0026] Figure 6 It is a plan view of the arrangement relationship between the sizing mechanism and the cross-cutting shear;

[0027] Figure 7 The K-direction schematic diagram of the arrangement relationship between the sizing mechanism and the cross-cutting shear;

[0028] Figure 8 It is the R-direction schematic diagram of the cut-to-length mechanism and the cross-cutting shear output roller table;

[0029] Fig. 9 It is a schematic diagram of the tooth shape of the baffle and the roller when the sizing mechanism is in the working position.

[0030] Reference numerals:

[0031] 1 fixed module, 11 base, 12 guide rail, 13 brake pad, 14 rack, 15 buffer unit, 2 running module, 21 running frame, 22 telescopic unit, 23 drive unit, 24 bearing, 25 first hinge ear, 26 second hinge ear, 27 brake unit, 3 swing module, 31 swing frame, 32 baffle, 33 guide rod, 34 first connecting beam, 35 buffer, 36 reverse thrust hydraulic cylinder, 37 second connecting beam, 38 first hinge shaft, 39 second hinge shaft, 4 roller, D steel plate cross-cutting shear mechanical sizing mechanism, A1 cross-cutting shear input roller, A2 cross-cutting shear, A3 cross-cutting shear output roller, L0 minimum fixed length, L max Maximum cut length. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and the features in the embodiments can be combined with each other without conflict.

[0033] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] See also Figures 1 to 9 , is a steel plate cross-cutting shear sizing mechanism, comprising a fixed module 1, a running module 2 movably arranged on the fixed module 1, the running module 2 comprising a running frame 21 and a telescopic unit 22 fixedly arranged on the running frame 21 at one end, the other end of the telescopic unit 22 is rotatably connected to the swing module 3, and the radial direction of the telescopic unit 22 is perpendicular to the moving direction of the running module 2; the swing module 3 comprises a swing frame 31 rotatably connected to the telescopic unit 22, when the telescopic unit 22 is extended, the swing frame 31 falls to the working position on the roller 4 below; when the telescopic unit 22 is shortened, the swing frame 31 rotates around its rotating end and is lifted to the initial position. The fixed module 1 is arranged on one side of the cross-cutting shear output roller 4, and its length direction is parallel to the running direction of the output roller 4. After the swing module 3 swings upward at an angle of α, there is no equipment blocking the space above the cross-cutting shear output roller 4, and equipment maintenance and manual operations such as offline hoisting or grinding of the steel plate on the roller 4 can be carried out.

[0036] A baffle 32 is provided on one end of the swing frame 31 near the material feeding direction of the roller 4. The baffle 32 is perpendicular to the roller 4. When the swing frame 31 falls on the roller 4, the baffle 32 fits with the upper surface of the roller 4. The side of the baffle 32 near the roller 4 below is tooth-shaped, and the upper surface of the roller 4 is also configured to fit with the baffle 32 to prevent the incoming steel plate from getting stuck in the gap between the baffle 32 and the roller 4; in some embodiments of the present invention, the tooth shape is preferably a rectangular tooth shape, such as Figure 8 , 9 shown.

[0037] In some embodiments of the present invention, the telescopic unit 22 is preferably a tail-hinged hydraulic cylinder, which is hingedly mounted on the traveling frame 21 .

[0038] The fixed module 1 includes a base 11 and a guide rail 12 arranged on the base 11; a bearing 24 matched with the guide rail 12 is arranged at the bottom of the running frame 21, and the movement of the running module 2 on the fixed module 1 is realized by the bearing 24. In some embodiments of the present invention, two guide rails 12 are arranged side by side along the running direction, and correspondingly, at least four bearings 24 are symmetrically arranged, which cooperate with the guide rail 12 to form a running guide and load-bearing structure. It also includes a brake pad 13 on the base 11 that is parallel to the guide rail 12. The brake pad 13 is oblong, its length matches the running stroke, and there is no joint in the running direction; a brake unit 27 matched with the brake pad 13 is arranged at the bottom of the running frame 21, so as to realize the braking of the running frame 21. The brake unit 27 may preferably be a brake groove with adjustable groove width, which is clamped on both sides of the brake pad 13; the groove width of the brake groove is adjustable, and when the running frame 21 moves on the guide rail 12, the groove width of the brake groove is greater than the thickness t of the brake pad 13, and when the running frame 21 moves to a predetermined position, the groove width of the brake groove is reduced to clamp the brake pad 13, thereby braking the running frame 21. The brake unit 27 may also adopt a caliper brake, with the caliper clamped on both sides of the brake pad 13, which can achieve the same braking purpose.

[0039] The base 11, the running frame 21 and the swing frame 31 are all made of steel structures to ensure the structural strength of the overall mechanism.

[0040] The fixed module 1 also includes a rack 14 arranged on the base 11 and parallel to the guide rail 12; a gear meshing with the rack 14 and a driving unit 23 driving the gear to rotate are also arranged at the bottom of the running frame 21. The gear rotates and moves on the rack 14, driving the running frame 21 to move on the rack 14. The driving unit 23 is provided with an electrical component for detecting the running position, and the running position can be monitored and controlled in conjunction with the instructions of the upper computer.

[0041] Buffer units 15 are respectively provided at both ends of the guide rail 12 to play a buffering role when the running module 2 moves to the end of the guide rail 12; in some embodiments of the present invention, the buffer unit 15 is preferably a buffer.

[0042] The swing frame 31 is provided with a through hole opening toward the baffle 32, and a guide rod 33 is movably arranged in the through hole. In some embodiments of the present invention, two through holes are arranged in parallel, and correspondingly, two guide rods 33 are also arranged, and they can slide in the through holes along the radial direction. The first connecting beam 34 is connected to the swing frame 31 through the guide rod 33; a buffer 35 is arranged on the first connecting beam 34 to buffer the movement of the guide rod 33 in the through hole; the baffle 32 is arranged on the side of the first connecting beam 34 away from the swing frame 31. A reverse thrust hydraulic cylinder 36 and a second connecting beam 37 are arranged in sequence at one end of the swing frame 31 away from the first connecting beam 34. The reverse thrust hydraulic cylinder 36 can realize the reverse push of the liquid by changing the inner cavity pressure and the reflux mode, so that the piston produces reverse movement; when the steel plate to be sheared impacts the baffle 32, the piston rod in the reverse thrust hydraulic cylinder 36 extends out, and cooperates with the buffer 35 to play a secondary buffering role. One end of the guide rod 33 is connected to the first connecting beam 34, and the other end is connected to the second connecting beam 37.

[0043] Safety pin holes are provided on the swing frame 31 and the running frame 21. When the equipment is overhauled, the safety pins are respectively inserted into the safety pin holes to avoid malfunction of the equipment.

[0044] A first hinge ear 25 is provided at one end of the telescopic unit 22 connected to the swing frame 31, and a first hinge shaft 38 matching therewith is provided on the swing frame 31; a second hinge shaft 39 is provided at one end of the swing frame 31 close to the running frame 21, and a second hinge ear 26 matching therewith is provided on the running frame 21; the first hinge ear 25 is rotatably connected to the first hinge shaft 38, and the second hinge ear 26 is rotatably connected to the second hinge shaft 39, thereby jointly realizing the rotation of the swing frame 31 around the running frame 21.

[0045] The operating steps of the sizing mechanism are:

[0046] S1, determine the target cut length L of the steel plate to be cut (L is between L0 and L max between);

[0047] S2, turn on the brake unit 27 for braking;

[0048] S3, the running module 2 moves from the current position L x Travel to the target position L, the travel distance S is: S = L x -L, when S is positive, it means the running mechanism is moving towards the cross-cutting shear direction; when it is negative, it means the running mechanism is moving away from the cross-cutting shear direction.

[0049] S4, the brake unit 27 is locked and braked;

[0050] S5, the swing frame 31 swings down to the working position;

[0051] S6, when the momentum of the steel plate to be sheared is greater than the stiffness of the buffer 35, the reverse thrust hydraulic cylinder 36 is set to the passive mode; when the momentum of the steel plate to be sheared is less than or equal to the stiffness of the buffer 35, the piston rod of the reverse thrust hydraulic cylinder 36 is actively extended to the stroke limit;

[0052] S7, when the steel plate to be sheared is stopped by the baffle 32, the piston rod of the reverse thrust hydraulic cylinder 36 retracts to the zero position;

[0053] S8, cross-cutting and cutting to length;

[0054] S9, the swing frame 31 swings upward to the initial position;

[0055] S10, the length-fixing operation is completed.

[0056] The above operation steps S5 and S6 can be performed in parallel under automatic control conditions, and the order of S8 and S9 can be exchanged.

[0057] Embodiment 1:

[0058] The present invention D Figure 1 After assembly, install in Figure 7 The cross-cutting shear output roller A3 side is shown in the operating range L of the baffle 32. max - L0 (L max and L0 are calibrated based on the shear line of the cross-cut shear). The cross-cut shear output roller A3 is a pattern roller, and the remaining rollers 4 can be pattern rollers or flat rollers. When in the initial position, the baffle 32 is in the position as shown in FIG. Figure 8 As shown, the brake groove is reduced and the brake pad 13 is clamped, thereby locking the running module 2 at a certain position of the fixed module 1, usually L max The driving unit 23 is a reduction motor with a built-in encoder, and the brake unit 27 is composed of multiple groups of spring hydraulic cylinders and brake blocks, and a brake groove is formed between the spring hydraulic cylinder rod head and the inner wall of the brake block.

[0059] When the target cut length of the steel plate to be sheared is determined, the superior computer transmits the instruction to the cut length mechanism of the present invention. Before the steel plate to be sheared is transported to the cross-cutting shear A2 via the input roller A1, the brake groove is opened, and the reduction motor drives the running module 2 and the swing module 3 to stop when they reach the target cut length L. The stop position is dynamically tracked and detected by the encoder built into the reduction motor. At the same time, the buffer unit 15 prevents the running module 2 from rushing out of the base 11 in the event of an accident. After stopping, the brake groove is locked again, and then the piston rod of the tail hinge hydraulic cylinder extends to swing the swing module 3 downward at an angle α to the working position. At this time, the baffle 32 is in a horizontal position, and the rectangular teeth below it fit with the rectangular teeth of the flower roller (such as Fig. 9), thereby preventing the steel plate from drilling into the gap between the baffle 32 and the roller 4 and causing a production accident. At this time, the sizing mechanism of the present invention has completed the operation preparation, and the steel plate to be sheared can be transported to the cross-cutting shear. The reverse thrust hydraulic cylinder 36 has two setting modes: active operation and passive operation, which are selected according to the state of the steel plate to be sheared. When the momentum of the steel plate to be sheared is greater than the stiffness of the buffer 35, after the steel plate to be sheared impacts the baffle 32, it will continue to decelerate forward with the baffle 32 until the speed is 0. During this process, the reverse thrust hydraulic cylinder 36 is passively extended. When the steel plate to be sheared stops, the distance between its end and the shearing line is greater than the target sizing length L. At this time, the piston rod of the reverse thrust hydraulic cylinder 36 slowly retracts to the zero position, so that the baffle 32 pushes the steel plate to be sheared in the opposite direction to the sizing length L, and then the cross-cutting shear performs sizing shearing. When the momentum of the steel plate to be sheared is less than or equal to the stiffness of the buffer 35, the piston rod of the reverse thrust hydraulic cylinder 36 is actively extended, thereby pulling the baffle 32 forward (in the direction of the steel plate forward) for a certain distance and then maintaining it. When the steel plate to be sheared is blocked by the baffle 32, it rebounds backward due to rigid impact (the rebound distance is less than the distance the baffle 32 is pulled forward) and then stops. At this time, the piston rod of the reverse thrust hydraulic cylinder 36 slowly retracts to zero position, so that the baffle 32 pushes the steel plate to be sheared in the opposite direction to the fixed length L, and then the cross-cutting shear performs the fixed length shearing. After the shearing is completed, the swing module 3 swings upward at an angle of α under the action of the tail hinge hydraulic cylinder to return to the initial position, and the steel plate cut to the fixed length can continue to be transported to the downstream of the production line through the output roller A3. At this point, a shearing and fixed length operation cycle is completed.

[0060] In some embodiments of the present invention, the driving unit 23 may also adopt a hydraulic motor or other rotary driving power components, or the reduction motor may be replaced with a built-in brake reduction motor, and the brake unit 27 may be eliminated to achieve the same driving purpose, wherein the built-in brake reduction motor is suitable for working conditions with smaller loads.

[0061] In some embodiments of the present invention, the gear and the rack 14 can be replaced by a lead screw nut and a lead screw, respectively, which can achieve the same travel drive purpose and is suitable for working conditions with a smaller fixed-length stroke.

[0062] In actual implementation, when the maximum cut length is small (such as L max <3 meters), the traveling module 2 can be driven by a hydraulic cylinder to push horizontally directly along the length direction of the guide rail 12, thereby omitting structures such as the driving unit 23 and the rack 14, making the structure of the present invention simpler.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A steel plate cross-cutting shearing and sizing mechanism, characterized in that: It comprises a fixed module (1), the running module (2) is movably arranged on the fixed module (1), the running module (2) comprises a running frame (21) and a telescopic unit (22) with one end fixedly arranged on the running frame (21), the other end of the telescopic unit (22) is rotatably connected to the swing module (3), and the radial direction of the telescopic unit (22) is perpendicular to the moving direction of the running module (2); The swing module (3) comprises a swing frame (31) rotatably connected to the telescopic unit (22); when the telescopic unit (22) is extended, the swing frame (31) falls to a working position on the roller (4) below; when the telescopic unit (22) is shortened, the swing frame (31) is rotated around its rotation end and lifted to an initial position; a baffle (32) is provided at one end of the swing frame (31) close to the material feeding direction of the roller (4); the baffle (32) is perpendicular to the roller (4); when the swing frame (31) falls on the roller (4), the baffle (32) is in contact with the upper surface of the roller (4).

2. The steel plate cross-cutting shearing and sizing mechanism according to claim 1, characterized in that: The fixed module (1) comprises a base (11) and a guide rail (12) arranged on the base (11); a bearing (24) matching with the guide rail (12) is arranged at the bottom of the running frame (21), and the movement of the running module (2) on the fixed module (1) is achieved through the bearing (24).

3. The steel plate cross-cutting shearing and sizing mechanism according to claim 2, characterized in that: The fixing module (1) also includes a brake pad (13) on the base (11) and parallel to the guide rail (12), and a brake unit (27) matching with the brake pad (13) is provided at the bottom of the running frame (21) to facilitate braking of the running frame (21).

4. The steel plate cross-cutting shearing and sizing mechanism according to claim 3, characterized in that: The brake unit (27) is a brake groove with an adjustable groove width, and the brake groove is clamped on both sides of the brake pad (13); the groove width of the brake groove is adjustable, and when the running frame (21) moves on the guide rail (12), the groove width of the brake groove is greater than the thickness of the brake pad (13); when the running frame (21) moves to a predetermined position, the groove width of the brake groove is reduced to clamp the brake pad (13), thereby playing a braking role on the running frame (21).

5. The steel plate cross-cutting shearing and sizing mechanism according to claim 2, characterized in that: Buffer units (15) are respectively provided at both ends of the guide rail (12) to play a buffering role when the running module (2) moves to the end of the guide rail (12).

6. The steel plate cross-cutting shearing and sizing mechanism according to claim 2, characterized in that: The fixing module (1) also includes a rack (14) arranged on the base (11) and parallel to the guide rail (12); the bottom of the running frame (21) is also provided with a gear meshing with the rack (14), and a driving unit (23) driving the gear to rotate, and the gear rotates and moves on the rack (14), driving the running frame (21) to move on the rack (14).

7. The steel plate cross-cutting shearing and sizing mechanism according to claim 1, characterized in that: The swing frame (31) is provided with a through hole opening toward the baffle (32); a guide rod (33) is movably arranged in the through hole; a first connecting beam (34) is connected to the swing frame (31) via the guide rod (33); a buffer (35) is arranged on the first connecting beam (34) to buffer the movement of the guide rod (33) in the through hole; and the baffle (32) is arranged on a side of the first connecting beam (34) away from the swing frame (31).

8. The steel plate cross-cutting shearing and sizing mechanism according to claim 7, characterized in that: A reverse thrust hydraulic cylinder (36) and a second connecting beam (37) are sequentially arranged at one end of the swing frame (31) away from the first connecting beam (34); when the steel plate to be sheared impacts the baffle (32), the piston rod in the reverse thrust hydraulic cylinder (36) extends out to cooperate with the buffer (35) to play a secondary buffering role.

9. The steel plate cross-cutting shearing and sizing mechanism according to claim 1, characterized in that: A first hinge ear (25) is provided at one end of the telescopic unit (22) connected to the swing frame (31), and a first hinge shaft (38) matching therewith is provided on the swing frame (31); a second hinge shaft (39) is provided at one end of the swing frame (31) close to the running frame (21), and a second hinge ear (26) matching therewith is provided on the running frame (21); the first hinge ear (25) is rotatably connected to the first hinge shaft (38), and the second hinge ear (26) is rotatably connected to the second hinge shaft (39), so as to realize the rotation of the swing frame (31) around the running frame (21).

10. The steel plate cross-cutting shearing and sizing mechanism according to claim 1, characterized in that: The side of the baffle (32) close to the roller conveyor (4) below is tooth-shaped, and the upper surface of the roller conveyor (4) is also configured to be tooth-shaped to fit the baffle (32).

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