A paperboard barrel rolling paper slitting device

Abstract

This utility model discloses a paper cutting device for cardboard drum rolling, including a base, a cutting seat slidably connected to the upper end of the base, a cutting frame placed in the middle of the rear side of the base, and a precision cutting mechanism. The precision cutting mechanism includes a sliding column, a limiting frame, a bidirectional lead screw, a mounting frame, a limiting wheel, a drive assembly, and a cutting assembly. The sliding column is respectively set at the front and rear edges of the upper end of the cutting seat, and the limiting frame is slidably connected between the two sliding columns. This paper cutting device for cardboard drum rolling is equipped with a precision cutting mechanism, which can accurately adjust the position of the limiting wheel according to the size of the kraft paper roll. The limiting frame is movable and can automatically limit the kraft paper roll, improving the cutting accuracy of the kraft paper roll. The cutting saw blade can move upward while moving forward, avoiding the situation where the cutting saw blade contacts the load-bearing roller, and can cut kraft paper rolls with larger diameters.

Description

Technical Field

[0001] This utility model relates to the field of cardboard drum production technology, specifically to a paper cutting device for rolling cardboard drums. Background Technology

[0002] Cardboard drums are packaging containers made of multi-layered kraft paper (usually eight layers) bonded together with polyvinyl alcohol solution to form the drum body, and five layers of plywood to form the drum bottom and lid. They are widely used in chemical, pharmaceutical, and food industries for moisture-proof and corrosion-resistant transport packaging. They are environmentally friendly, recyclable, lightweight, high-strength, and customizable in specifications. Suitable for storing powders, liquids, or valuables for both export and domestic sales. Before production, the rolled kraft paper raw material needs to be slit, requiring cardboard drum rolling slitting equipment. Existing cardboard drum rolling slitting equipment typically consists of a slitting seat, load-bearing rollers, a limiting frame, and a slitting mechanism. The slitting seat can move left and right via a hydraulic push rod. The load-bearing rollers support and drive the kraft paper roll. Two limiting frames are fixed on the left and right sides of the upper end of the slitting seat. The limiting frames have adjustable limiting wheels that can be adjusted horizontally and vertically, usually manually via screws and handwheels, to limit the kraft paper roll. The slitting mechanism consists of a motor and a saw blade. This device consists of a hydraulic push rod, which drives the saw blade to move back and forth. In use, the kraft paper roll is placed between two load-bearing rollers. The position of the limit wheel is manually adjusted to limit the kraft paper roll, preventing it from moving back and forth. The rotation of the load-bearing rollers causes the kraft paper roll to rotate, and the hydraulic push rod moves the slitting seat to adjust the slitting position. The motor drives the saw blade to rotate at high speed, and the hydraulic push rod pushes the saw blade forward. The high-speed rotating saw blade slits the kraft paper roll. Traditional paper slitting equipment for cardboard drum rolling cannot move its limit frame, and the length of the kraft paper roll cannot exceed the distance between the two limit frames, which is quite limiting. Furthermore, each limit frame has only one limit wheel, and the position of the limit wheels on both frames is prone to deviation after manual adjustment, affecting slitting accuracy. The saw blade moves in a straight line, and the moving distance cannot be too long, otherwise the saw blade will hit the load-bearing roller. Therefore, it cannot slit kraft paper rolls with larger diameters. To address this, we propose a paper slitting device for cardboard drum rolling. Utility Model Content

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a paper slitting device for cardboard drum rolling. This device features a precision slitting mechanism that can accurately adjust the position of the limiting wheels according to the size of the kraft paper roll. The limiting frame is movable and can automatically limit the kraft paper roll, improving the slitting accuracy. The slitting saw blade can move upwards while moving forward, preventing it from contacting the load-bearing roller. This allows for the slitting of larger diameter kraft paper rolls and effectively solves the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a paper cutting device for rolling cardboard drums, including a base, a cutting seat slidably connected to the upper end of the base, a cutting frame placed in the middle of the rear side of the base, and a precision cutting mechanism. Precision slitting mechanism: It includes sliding columns, limiting frames, bidirectional lead screws, mounting frames, limiting wheels, drive components, and slitting components. The sliding columns are respectively set at the front and rear edges of the upper end of the slitting seat. The limiting frames are slidably connected between two sliding columns. The bidirectional lead screws are rotatably connected to the inside of the slitting seat. The mounting frames are all slidably connected to the inside of the limiting frames. The side of the mounting frame near the middle of the slitting seat is rotatably connected to the limiting wheels. The vertically adjacent limiting wheels are arranged in a circular array with the axis of the mounting frame as the center, providing a basis for automatic limiting of the kraft paper roll. The drive component is set inside the slitting seat, and the slitting components are set inside the cutting frame. It is equipped with a precision slitting mechanism that can accurately adjust the position of the limiting wheels according to the size of the kraft paper roll. The limiting frames are movable and can automatically limit the kraft paper roll, improving the slitting accuracy of the kraft paper roll. The slitting saw blade can move upward while moving forward, avoiding the slitting saw blade from contacting the load-bearing roller. It can slit larger diameter kraft paper rolls.

[0005] Furthermore, the drive assembly includes a lead screw, a knob, an arrow, and a scale. The lead screws are all rotatably connected to the inner center of the limiting frame. The inner center of the mounting frame is threadedly connected to the outer surface of the vertically adjacent lead screw. The knobs are all located at the upper end of the lead screw. The arrows are all located in the middle of the side of the mounting frame away from the center of the slitting seat. The scales are all located at the front end of the side of the limiting frame away from the center of the slitting seat, providing a basis for the precise movement of the limiting wheel.

[0006] Furthermore, the drive assembly also includes a commutator and a first motor. The commutator is located in the middle of the bottom wall of the slitting seat, and the first motor is located at the rear end of the commutator. The input end of the first motor is electrically connected to the output end of the microcontroller. The front end of the output shaft of the first motor is fixedly connected to the rear end of the commutator shaft. The output shaft of the commutator is fixedly connected to the middle of the outer surface of the bidirectional lead screw, providing a driving effect for the automatic limiting of the kraft paper roll.

[0007] Furthermore, the slitting assembly includes a chute, sliding seats, a rotating shaft, and a slitting saw blade. The chute is located inside the upper front side of the cutting frame and is an inclined groove that is higher in the front and lower in the back. The sliding seats are slidably connected to the left and right sides inside the chute, and a rotating shaft is rotatably connected to the middle of the two sliding seats. The slitting saw blade is fixedly connected to the middle of the outer surface of the rotating shaft through a mounting hole in the middle, providing a basis for slitting the kraft paper roll.

[0008] Furthermore, the slitting assembly also includes a mounting groove, a hydraulic push rod, and a motor. The mounting groove is located in the middle of the outer surface of the sliding seat. The hydraulic push rod is located in the middle of the left and right sides of the cutting frame. The front end of the telescopic end of the hydraulic push rod is fixedly connected to the inner wall of the vertically adjacent mounting groove through a connecting ring. The motor is located at the right end of the right sliding seat. The input end of the motor is electrically connected to the output end of the microcontroller. The left end of the output shaft of the motor is fixedly connected to the right end of the rotating shaft, providing a driving effect for the slitting of the kraft paper roll.

[0009] Furthermore, it also includes a load-bearing roller, a reduction gearbox, and a third motor. The load-bearing roller is rotatably connected to the front and rear sides of the upper end of the slitting seat. The reduction gearboxes are all located on the upper left side of the slitting seat. The third motor is located on the left end of the reduction gearbox. The input end of the third motor is electrically connected to the output end of the microcontroller. The right end of the output shaft of the third motor is fixedly connected to the left end of the reduction shaft of the horizontally adjacent reduction gearbox. The right end of the output shaft of the reduction gearbox is fixedly connected to the left end of the horizontally adjacent load-bearing roller, providing a basis for the load-bearing and driving of the kraft paper roll.

[0010] Furthermore, it also includes a second hydraulic push rod, which is respectively located on the right end of the front and rear sides of the base. The left end of the telescopic end of the second hydraulic push rod is fixedly connected to the adjacent end of the slitting seat through angle iron, providing a basis for adjusting the slitting position of the kraft paper roll.

[0011] Furthermore, it also includes a microcontroller, which is placed on the rear right side of the base. The input terminal of the microcontroller is electrically connected to an external power source to provide control for the slitting of the kraft paper rolls.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This paperboard drum rolling and slitting equipment has the following advantages: 1. The position of the limit wheels can be precisely adjusted using arrows and rulers, avoiding uneven force and deviation of the kraft paper roll caused by deviation between the limit wheels on both sides. The rotation of the bidirectional screw automatically drives the two limit frames to move inward synchronously, realizing the left and right limit of the kraft paper roll. This avoids the situation where the length of the kraft paper roll is limited due to the immobility of the limit frames in traditional equipment, and also improves the cutting accuracy of the kraft paper.

[0013] 2. The inclined chute limits the movement of the slitting saw blade, allowing it to move forward and upward simultaneously. This prevents the load-bearing roller from interfering with the movement of the slitting saw blade and also allows the slitting saw blade to cut the kraft paper roll to the maximum extent possible, enabling the slitting of kraft paper rolls with larger diameters. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a schematic cross-sectional view of the precision cutting mechanism of this utility model; Figure 3 This is a schematic diagram of the drive component structure of this utility model; Figure 4 This is a schematic diagram of the arrow and ruler of this utility model; Figure 5 This is a schematic cross-sectional view of the cutting component of this utility model; Figure 6 This is a schematic diagram of the structure of the sliding seat of this utility model.

[0015] In the diagram: 1. Base, 2. Cutting seat, 3. Cutting frame, 4. Precision cutting mechanism, 41. Sliding column, 42. Limiting frame, 43. Two-way lead screw, 44. Mounting frame, 45. Limiting wheel, 46. Drive assembly, 461. Lead screw, 462. Knob, 463. Arrow, 464. Ruler, 465. Reversing device, 466. Motor I, 47. Cutting assembly, 471. Slide groove, 472. Sliding seat, 473. Rotary shaft, 474. Cutting saw blade, 475. Mounting groove, 476. Hydraulic push rod I, 477. Motor II, 5. Load-bearing roller, 6. Gearbox, 7. Motor III, 8. Hydraulic push rod II, 9. Microcontroller. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-6This embodiment provides a technical solution: a paper slitting device for cardboard drum rolling, including a base 1, a slidable sliding seat 2 for the overall movement of kraft paper rolls, a cutting frame 3 placed in the middle of the rear side of the base 1, a precision slitting mechanism 4, a load-bearing roller 5, a reduction gearbox 6, and a motor 7. The load-bearing roller 5 is rotatably connected to the front and rear sides of the upper end of the slitting seat 2, the reduction gearbox 6 is located on the upper left side of the slitting seat 2, and the motor 7 is located on the left side of the reduction gearbox 6. The input end of the motor 7 is electrically connected to the output end of a microcontroller 9, and the right end of the output shaft of the motor 7 is fixedly connected to the left end of the reduction shaft of the horizontally adjacent reduction gearbox 6. The right end of the output shaft of the reduction gearbox 6 is fixedly connected to the left end of the horizontally adjacent load-bearing roller 5. The left end of the heavy roller 5 is fixedly connected, providing a basis for the load-bearing and driving of the kraft paper roll. It also includes a hydraulic push rod 2 8, which is respectively set on the right end of the front and rear sides of the base 1. The left end of the telescopic end of the hydraulic push rod 2 is fixedly connected to the adjacent end of the slitting seat 2 through angle iron. Because the slitting seat 2 and the base 1 have a sliding connection effect, and the base 1 provides limit and sliding support for the slitting seat 2, the hydraulic push rod 2 8 only has axial load and no radial load when it is working, and is not easily damaged. It provides a basis for adjusting the slitting position of the kraft paper roll. It also includes a microcontroller 9, which is placed on the rear right end of the base 1. The input end of the microcontroller 9 is electrically connected to an external power supply to provide control effect for the slitting of the kraft paper roll. Precision slitting mechanism 4: It includes sliding columns 41, limiting frames 42, bidirectional lead screws 43, mounting frames 44, limiting wheels 45, drive components 46, and slitting components 47. The sliding columns 41 are respectively located at the front and rear edges of the upper end of the slitting base 2. The limiting frames 42 are slidably connected between the two sliding columns 41. The bidirectional lead screw 43 is rotatably connected to the middle of the interior of the slitting base 2. A bellows is provided between the inner wall of the slitting base 2 and the limiting frame 42. The bellows are sleeved on the outer surface of the bidirectional lead screw 43. The bellows will contract and expand as the limiting frame 42 moves to protect the bidirectional lead screw 43 from the influence of the external environment. The mounting frames 44 are slidably connected to the middle of the interior of the limiting frame 42. The side of the mounting frame 44 near the middle of the slitting base 2 is rotatably connected to the limiting wheels. 45. Vertically adjacent limiting wheels 45 are arranged in a circular array with the axis of the mounting frame 44 as the center. The limiting wheels 45 can be made of polyurethane, providing a basis for automatic limiting of kraft paper rolls. The drive assembly 46 is located inside the slitting seat 2. The drive assembly 46 includes a lead screw 461, a knob 462, an arrow 463, and a scale 464. The lead screw 461 is rotatably connected to the middle of the inside of the limiting frame 42. The middle of the inside of the mounting frame 44 is threaded to the outer surface of the vertically adjacent lead screw 461. Corrugated tubes are provided between the top wall of the limiting frame 42 and the upper end of the mounting frame 44, and between the bottom wall of the limiting frame 42 and the lower end of the mounting frame 44. The corrugated tubes are sleeved on the outer surface of the lead screw 461. The corrugated tubes move up and down with the mounting frame 44. The screw 461 is designed to contract and expand to protect it from external environmental influences. Knobs 462 are located at the top of the screw 461. Arrows 463 are located on the side of the mounting bracket 44 away from the center of the slitting seat 2. Scales 464 are located at the front end of the limit bracket 42 away from the center of the slitting seat 2, providing a basis for the precise movement of the limit wheel 45. The drive assembly 46 also includes a commutator 465 and a motor 466. The commutator 465 is located in the middle of the bottom wall of the slitting seat 2. The motor 466 is located at the rear end of the commutator 465. The input end of the motor 466 is electrically connected to the output end of the microcontroller 9. The front end of the output shaft of the motor 466 is fixedly connected to the rear end of the commutation shaft of the commutator 465. The output shaft of the commutator 465 is connected to the outer surface of the bidirectional screw 43. The commutator 465 is a common gear-type commutation device in the prior art, used for the commutation of motor 466, providing a driving effect for the automatic limit of the kraft paper roll. The slitting assembly 47 is set inside the cutting frame 3. The slitting assembly 47 includes a slide 471, a sliding seat 472, a rotating shaft 473, and a slitting saw blade 474. The slide 471 is opened on the upper front side of the inside of the cutting frame 3. The slide 471 is an inclined groove with a higher front and lower rear. The sliding seats 472 are slidably connected to the left and right sides inside the slide 471, respectively. A rotating shaft 473 is rotatably connected in the middle of the two sliding seats 472. The slitting saw blade 474 is fixedly connected to the middle of the outer surface of the rotating shaft 473 through the mounting hole in the middle, providing a basis for slitting the kraft paper roll.The slitting assembly 47 also includes mounting grooves 475, hydraulic push rod 476, and motor 477. The mounting grooves 475 are all located in the middle of the outer surface of the sliding seat 472. The hydraulic push rods 476 are respectively located in the middle of the left and right sides of the cutting frame 3. The front ends of the telescopic ends of the hydraulic push rods 476 are fixedly connected to the inner walls of the vertically adjacent mounting grooves 475 via connecting rings. Because the sliding seat 472 and the sliding groove 471 have a sliding connection effect, and the sliding groove 471 provides limiting and sliding support for the movement of the sliding seat 472, the hydraulic push rod 476 only experiences axial load and no radial load during operation, making it less prone to damage. The motor 477 is located at the right end of the right sliding seat 472. The input terminal of motor 477 is electrically connected to the output terminal of microcontroller 9. The left end of the output shaft of motor 477 is fixedly connected to the right end of shaft 473. Hydraulic push rod 476 and hydraulic push rod 8 are both connected to an external hydraulic pump station through oil pipes, providing a driving effect for the slitting of kraft paper rolls. A precision slitting mechanism 4 is provided, which can accurately adjust the position of the limit wheel 45 according to the size of the kraft paper roll. The limit frame 42 is movable and can automatically limit the kraft paper roll, improving the slitting accuracy of the kraft paper roll. The slitting saw blade 474 can move upward while moving forward, avoiding the situation where the slitting saw blade 474 contacts the load-bearing roller 5, and can slitting kraft paper rolls with larger diameters.

[0018] The working principle of the paper cutting device for cardboard drum rolling provided by this utility model is as follows: When cutting the paper for cardboard drum rolling, i.e., kraft paper rolls, first adjust the position of the mounting frame 44 and the limiting wheel 45 according to the diameter of the kraft paper roll. Turn the knob 462 to drive the lead screw 461 to rotate. The mounting frame 44 will move up and down with the rotation of the lead screw 461 until the arrow 463 is aligned with the appropriate scale on the ruler 464. At this time, after placing the kraft paper roll above the two load-bearing rollers 5, the axis of the mounting frame 44... Aligning with the axis of the kraft paper roll, the microcontroller 9 controls the operation of motor 466. Motor 466 drives the bidirectional lead screw 43 to rotate through the commutator 465 and deceleration. As the bidirectional lead screw 43 rotates, the two limit frames 42 move inward synchronously, and the mounting frame 44 and the limit wheel 45 also move inward synchronously until the outer surface of the limit wheel 45 is in contact with the adjacent end of the kraft paper roll. At this time, the kraft paper roll is limited and cannot move left or right, thus determining the origin of the kraft paper roll. The external hydraulic pump station works, and the telescopic end of the hydraulic push rod 8 moves outward. Extending, the slitting seat 2 moves above the base 1, aligning the cutting position of the kraft paper roll with the slitting saw blade 474. The microcontroller 9 controls the operation of motor 3 7, whose output shaft drives the load-bearing roller 5 through the reduction gearbox 6. According to the program settings of the microcontroller 9, the rotation direction and speed of both motors 3 7 are the same, as are the rotation direction and speed of the two load-bearing rollers 5, causing the kraft paper roll above to rotate. Simultaneously, the microcontroller 9 controls the operation of motor 2 477, whose output shaft drives... The rotating shaft 473 rotates at high speed, and the slitting saw blade 474 also rotates at high speed at the same time. Simultaneously, the external hydraulic pump station works, the telescopic end of the hydraulic push rod 476 moves forward, and the sliding seat 472 moves upward along with the inclined slide groove 471. The slitting saw blade 474 also moves accordingly. When the high-speed rotating slitting saw blade 474 contacts the kraft paper roll, the high-speed rotating slitting saw blade 474 forms a slitting effect on the kraft paper roll until the slitting saw blade 474 cuts the kraft paper roll completely, realizing fast and accurate slitting of the kraft paper roll.

[0019] It is worth noting that the microcontroller 9 disclosed in the above embodiments is an STM8L052C6T6 microcontroller, motor 1 466 is a SIMOTICS M motor, motor 2 477 is a DKM motor, and motor 3 7 is a 1FT7136-5AC71-1MA1 servo motor. The microcontroller 9 controls the operation of motor 1 466, motor 2 477 and motor 3 7 using methods commonly used in the prior art.

[0020] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A paperboard barrel rolling raw paper slitting device, comprising a base (1), the upper end of the base (1) is slidingly connected with a slitting seat (2), the rear middle part of the base (1) is provided with a cutting frame (3), characterized in that: It also includes a precision cutting mechanism (4); Precision slitting mechanism (4): It includes a sliding column (41), a limiting frame (42), a two-way lead screw (43), a mounting frame (44), a limiting wheel (45), a drive assembly (46), and a slitting assembly (47). The sliding column (41) is respectively located at the front and rear edges of the upper end of the slitting seat (2). The limiting frame (42) is slidably connected between the two sliding columns (41). The two-way lead screw (43) is rotatably connected to the middle of the slitting seat (2). The mounting frame (44) is slidably connected to the middle of the limiting frame (42). The side of the mounting frame (44) near the middle of the slitting seat (2) is rotatably connected to the limiting wheel (45). The vertically adjacent limiting wheels (45) are arranged in a circular array with the axis of the mounting frame (44) as the center. The drive assembly (46) is located inside the slitting seat (2), and the slitting assembly (47) is located inside the cutting frame (3).

2. A paperboard tube manufacturing log slitting apparatus as defined in claim 1, wherein: It also includes a microcontroller (9), which is placed on the rear right side of the base (1), and the input terminal of the microcontroller (9) is electrically connected to an external power supply.

3. The paperboard tube manufacturing paper slitting apparatus according to claim 1, wherein: The drive assembly (46) includes a lead screw (461), a knob (462), an arrow (463), and a scale (464). The lead screw (461) is rotatably connected to the middle of the inside of the limiting frame (42). The middle of the inside of the mounting frame (44) is threaded to the outer surface of the vertically adjacent lead screw (461). The knob (462) is located at the upper end of the lead screw (461). The arrow (463) is located in the middle of the side of the mounting frame (44) away from the middle of the cutting seat (2). The scale (464) is located at the front end of the side of the limiting frame (42) away from the middle of the cutting seat (2).

4. The paper slitting equipment for cardboard drum rolling according to claim 2, characterized in that: The drive assembly (46) also includes a commutator (465) and a motor (466). The commutator (465) is located in the middle of the bottom wall of the cutting seat (2). The motor (466) is located at the rear end of the commutator (465). The input end of the motor (466) is electrically connected to the output end of the microcontroller (9). The front end of the output shaft of the motor (466) is fixedly connected to the rear end of the commutation shaft of the commutator (465). The output shaft of the commutator (465) is fixedly connected to the middle of the outer surface of the bidirectional lead screw (43).

5. The paper slitting equipment for cardboard drum rolling according to claim 2, characterized in that: The slitting assembly (47) includes a sliding groove (471), a sliding seat (472), a rotating shaft (473), and a slitting saw blade (474). The sliding groove (471) is located on the upper front side of the inside of the cutting frame (3). The sliding groove (471) is an inclined groove that is higher in the front and lower in the back. The sliding seats (472) are slidably connected to the left and right sides inside the sliding groove (471). A rotating shaft (473) is rotatably connected in the middle of the inside of the two sliding seats (472). The slitting saw blade (474) is fixedly connected to the middle of the outer surface of the rotating shaft (473) through the mounting hole in the middle.

6. The paper slitting equipment for cardboard drum rolling according to claim 5, characterized in that: The slitting assembly (47) also includes a mounting groove (475), a hydraulic push rod (476), and a motor (477). The mounting groove (475) is located in the middle of the outer surface of the sliding seat (472). The hydraulic push rod (476) is located in the middle of the left and right sides of the cutting frame (3). The front end of the telescopic end of the hydraulic push rod (476) is fixedly connected to the inner wall of the vertically adjacent mounting groove (475) through a connecting ring. The motor (477) is located at the right end of the right sliding seat (472). The input end of the motor (477) is electrically connected to the output end of the microcontroller (9). The left end of the output shaft of the motor (477) is fixedly connected to the right end of the rotating shaft (473).

7. The paper slitting equipment for cardboard drum rolling according to claim 2, characterized in that: It also includes a load-bearing roller (5), a reduction gearbox (6) and a motor (7). The load-bearing roller (5) is rotatably connected to the front and rear sides of the upper end of the slitting seat (2). The reduction gearbox (6) is located on the upper left side of the slitting seat (2). The motor (7) is located on the left side of the reduction gearbox (6). The input end of the motor (7) is electrically connected to the output end of the microcontroller (9). The right end of the output shaft of the motor (7) is fixedly connected to the left end of the reduction shaft of the horizontally adjacent reduction gearbox (6). The right end of the output shaft of the reduction gearbox (6) is fixedly connected to the left end of the horizontally adjacent load-bearing roller (5).

8. The paper slitting equipment for cardboard drum rolling according to claim 1, characterized in that: It also includes a second hydraulic push rod (8), which is respectively set on the right end of the front and rear sides of the base (1). The left end of the extension end of the second hydraulic push rod (8) is fixedly connected to the adjacent end of the cutting seat (2) through angle iron.

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