A flattening machine

By designing cleaning mechanism, slitting mechanism and buffer mechanism in the leveling machine, the problem of dust affecting the leveling effect, single function and excessive downcoming impact during use of the leveling machine is solved, and stronger functionality and longer service life are achieved.

CN222726017UActive Publication Date: 2025-04-08WUXI DALI SHEN ROLLING MASCH CO LTD
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Patent Information

Application Number
CN202420855793.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-24
Publication Date
2025-04-08
Estimated Expiration
2034-04-24

AI Technical Summary

Technical Problem

When used, the leveling machine is easily affected by dust adhering to the surface of the workpiece. It has a relatively single function and has a short service life due to excessive downward impact.

Method used

A leveling machine including a cleaning mechanism, a slitting mechanism and a buffer mechanism is designed. The cleaning mechanism cleans up dust on the surface of the workpiece through the cooperation of the upper and lower cleaning rollers and the pressing springs; the slitting mechanism realizes the slitting function of the workpiece through the cooperation of the slitting electric push rod and the slitting knife; the cushioning mechanism buffers the downforce through the cooperation of the slitting spring and the hook.

Benefits of technology

It effectively avoids the flattening effect due to dust on the surface of the workpiece, enhances the functionality of the flattening machine, and reduces the impact of downward impact on service life through the buffer mechanism.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222726017U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of leveling machines, specifically a leveling machine, including a leveling box, the surface of the leveling box is rotatably connected with a box door, both sides of the leveling box are provided with inlets and outlets, a leveling mechanism is arranged inside the leveling box, the leveling mechanism is composed of a driving motor, a roller frame, a leveling electric push rod and a leveling roller, one side of the leveling box is provided with a cleaning mechanism, the cleaning mechanism is composed of a cleaning component and a lower cleaning roller, the other side of the leveling box is provided with a slitting mechanism, the inside of the slitting mechanism is provided with a knife groove and a slitting assembly, a buffer mechanism is arranged at the top position inside the leveling box, the buffer mechanism is composed of a buffer component and a hook. The utility model not only avoids the phenomenon that the leveling effect is affected by dust adhering to the surface of the workpiece when the leveling machine is used, making the leveling machine more functional when used, but also makes it less likely that the service life of the leveling machine will be affected by excessive downward pressure impact when used.
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Description

Technical Field

[0001] The utility model relates to the technical field of leveling machines, in particular to a leveling machine. Background Art

[0002] The strip steel that has become a fibrous structure through cold rolling becomes a strip steel with a new crystalline structure due to recrystallization in the annealing process. This strip steel after annealing becomes almost completely soft and is therefore not suitable for processing and must be flat-rolled through a flat-rolling mill.

[0003] The workpiece is usually placed directly into the leveling machine for leveling, and it is not easy to clean its surface before leveling. If dust adheres to the surface of the workpiece, it will easily affect the leveling effect when the leveling machine is used. The leveling machine can usually only level the workpiece, and it is not easy to cut it after leveling, which can easily lead to a single function when the leveling machine is used. When the leveling machine is in use, the leveling roller is usually driven downward by an electric push rod to complete the leveling operation. It is usually not easy to buffer when pressing down, which can easily lead to excessive downward impact when the leveling machine is in use and affect its service life. Utility Model Content

[0004] The utility model aims to provide a leveling machine to solve the problems in the above background technology that the leveling machine is easy to affect the leveling effect during use, has a relatively single function, and is easy to affect the service life due to excessive downward pressure impact.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a leveling machine, comprising a leveling box, the surface of the leveling box is rotatably connected to a box door, the surface of the box door is installed with a control row of keys, both sides of the leveling box are provided with inlets and outlets, a leveling mechanism is arranged inside the leveling box, the leveling mechanism is composed of a driving motor, a roller frame, a leveling electric push rod and a leveling roller, a cleaning mechanism is arranged on one side of the leveling box, the cleaning mechanism is composed of a cleaning component and a lower cleaning roller, a slitting mechanism is arranged on the other side of the leveling box, a knife groove and a slitting assembly are arranged inside the slitting mechanism, a buffer mechanism is arranged at the top position inside the leveling box, the buffer mechanism is composed of a buffer member and a hook.

[0006] Preferably, a roller frame is provided inside the leveling box, and the roller frame and the leveling box are slidably matched with each other. A leveling electric push rod is fixed at the top position of the leveling box, and the input end of the leveling electric push rod is electrically connected to the output end of the control row key, and one end of the leveling electric push rod passes through the leveling box and is fixedly connected to the surface of the roller frame.

[0007] Preferably, the surfaces of the leveling box and the roller frame are both rotatably connected with leveling rollers, and the surfaces of the leveling box and the roller frame are both installed with driving motors, the input end of the driving motor is electrically connected to the output end of the control row key, the output end of the driving motor is fixed with a rotating shaft through a coupling, and one end of the rotating shaft is fixedly connected to one end of the leveling roller.

[0008] Preferably, one side of the leveling box is rotatably connected to a lower cleaning roller via a plastic frame, the lower cleaning roller is located on one side of the inlet and outlet, and a cleaning component is provided above the lower cleaning roller.

[0009] Preferably, the interior of the cleaning component includes an upper cleaning roller, a plastic mounting frame, a compression spring and a guide rod. A guide rod is provided on one side of the leveling box, one end of the guide rod passes through the leveling box and is fixed with the plastic mounting frame, and a compression spring is sleeved on the surface of the guide rod. The two ends of the compression spring are respectively fixedly connected to the surfaces of the leveling box and the plastic mounting frame, and the upper cleaning roller is rotatably connected to the inner side of the plastic mounting frame.

[0010] Preferably, a knife groove is provided on the other side of the leveling box, and a cutting assembly is provided above the knife groove.

[0011] Preferably, the interior of the slitting assembly includes a knife seat, a sliding frame, a slitting electric push rod and a slitting knife. A sliding frame is fixed on the other side of the leveling box, and a knife seat is arranged inside the sliding frame. The knife seat and the sliding frame slide with each other. A slitting electric push rod is fixed at the top position of the surface of the leveling box, and the input end of the slitting electric push rod is electrically connected to the output end of the control row key, and one end of the slitting electric push rod is fixedly connected to the surface of the knife seat.

[0012] Preferably, a slitting knife is provided on the surface of the knife seat, the slitting knife is detachably connected to the knife seat by means of screws, and the slitting knife cooperates with the knife groove.

[0013] Preferably, the hooks are respectively installed on both sides of the leveling box and the roller frame surface, and a buffer component is arranged between the hooks.

[0014] Preferably, the buffer component includes a connecting piece, a buffer spring and a hanging bolt inside, a connecting piece is provided between the hooks, a hanging bolt is fixed on the surface of the connecting piece, the hanging bolt and the hook are hung and cooperated with each other, and a buffer spring is fixed between the connecting pieces.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the flattening machine not only avoids the phenomenon that the flattening effect is affected by dust adhering to the surface of the workpiece when the flattening machine is used, making the flattening machine more functional when used, but also makes the flattening machine less likely to have its service life affected by excessive downward pressure impact when used;

[0016] 1. By setting up a cleaning mechanism, the workpiece to be leveled is placed inside the inlet and outlet. At this time, the bottom of the workpiece contacts the lower cleaning roller. At the same time, the upper cleaning roller is driven to be in close contact with the surface of the workpiece under the thrust of the compression spring. The upper cleaning roller is guided by the guide rod, and then the workpiece is pushed. At this time, the upper cleaning roller and the lower cleaning roller can clean the surface of the workpiece to prevent dust from adhering to the surface of the workpiece and affecting the leveling effect. At the same time, since the material of the plastic mounting frame can be deformed to a certain extent, the plastic mounting frame can be opened outwards, and the upper cleaning roller can be removed and replaced. Similarly, the lower cleaning roller can be replaced to realize the cleaning function of the leveling machine on the surface of the workpiece, thereby avoiding the phenomenon that the leveling effect is affected by dust adhering to the surface of the workpiece when the leveling machine is used;

[0017] 2. By setting up a slitting mechanism, if the workpiece needs to be slid, the control row of keys can be operated to control the slitting electric push rod to work, and the slitting electric push rod drives the knife seat to slide along the slide frame, driving the slitting knife to slitting the workpiece. At the same time, the slitting knife can be disassembled and replaced by loosening the screws on the surface of the knife seat, so as to realize the function of the leveling machine to slitting the workpiece, thereby making the leveling machine more functional when used;

[0018] 3. By providing a buffer mechanism, when the roller frame moves downward, it drives the hook to pull the bolt and stretch the buffer spring. Under the action of the buffer spring, the downward force can be buffered. At the same time, after a period of time, the hook can be pressed and removed from the bolt, and the buffer spring can be replaced to realize the buffer function of the leveling machine, so that the service life of the leveling machine is not easily affected by excessive downward impact during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0021] Figure 3 It is an enlarged structural diagram of the slitting mechanism of the utility model;

[0022] Figure 4 It is an enlarged structural diagram of the cleaning mechanism of the utility model.

[0023] In the figure: 1. leveling box; 101. control row key; 102. box door; 103. inlet and outlet; 2. leveling mechanism; 201. drive motor; 202. roller frame; 203. leveling electric push rod; 204. leveling roller; 3. slitting mechanism; 301. knife groove; 302. slitting assembly; 3021. knife holder; 3022. slide frame; 3023. slitting electric push rod; 3024. slitting knife; 4. cleaning mechanism; 401. cleaning component; 4011. upper cleaning roller; 4012. plastic mounting frame; 4013. compression spring; 4014. guide rod; 402. lower cleaning roller; 5. buffer mechanism; 501. buffer component; 5011. connecting piece; 5012. buffer spring; 5013. hanging bolt; 502. hook. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] The utility model provides a flattening machine having a structure as follows Figure 1 and Figure 2As shown, it includes a leveling box 1, the surface of the leveling box 1 is rotatably connected to a box door 102, the surface of the box door 102 is installed with a control row key 101, the model of the control row key 101 can be selected from the LA series, both sides of the leveling box 1 are provided with a material inlet and outlet 103, the interior of the leveling box 1 is provided with a leveling mechanism 2, the leveling mechanism 2 is composed of a driving motor 201, a roller frame 202, a leveling electric push rod 203 and a leveling roller 204, the interior of the leveling box 1 is provided with a roller frame 202, the roller frame 202 and the leveling box 1 slide with each other, a leveling electric push rod 203 is fixed at the top position of the leveling box 1, the model of the leveling electric push rod 203 can be selected from the LA series Using the TA series, the input end of the leveling electric push rod 203 is electrically connected to the output end of the control row key 101, one end of the leveling electric push rod 203 passes through the leveling box 1 and is fixedly connected to the surface of the roller frame 202, the surface of the leveling box 1 and the roller frame 202 are both rotatably connected with the leveling roller 204, the surface of the leveling box 1 and the roller frame 202 are both installed with a driving motor 201, the model of the driving motor 201 can be selected from the JO series, the input end of the driving motor 201 is electrically connected to the output end of the control row key 101, the output end of the driving motor 201 is fixed with a rotating shaft through a coupling, and one end of the rotating shaft is fixedly connected to one end of the leveling roller 204.

[0026] When in use, the workpiece enters between the leveling rollers 204, and then the control row of keys 101 is operated to make the control row of keys 101 control the drive motor 201 and the leveling electric push rod 203 to work, and the roller frame 202 is driven to slide downward along the leveling box 1 under the action of the leveling electric push rod 203, and the leveling rollers 204 on the surface of the roller frame 202 move downward, so that the leveling rollers 204 are tightly attached to both sides of the workpiece. At the same time, under the action of the drive motor 201, the leveling rollers 204 are driven to rotate to level the workpiece, so as to realize the leveling function of the leveling machine.

[0027] Furthermore, if Figure 4 As shown, a cleaning mechanism 4 is provided on one side of the leveling box 1, and the cleaning mechanism 4 consists of a cleaning component 401 and a lower cleaning roller 402. The lower cleaning roller 402 is rotatably connected to one side of the leveling box 1 through a plastic frame, and the lower cleaning roller 402 is located on one side of the inlet and outlet 103. A cleaning component 401 is provided above the lower cleaning roller 402, and the interior of the cleaning component 401 includes an upper cleaning roller 4011, a plastic mounting frame 4012, a compression spring 4013 and a guide rod 4014. A guide rod 4014 is provided on one side of the leveling box 1, and one end of the guide rod 4014 passes through the leveling box 1 and is fixed with the plastic mounting frame 4012, and a compression spring 4013 is sleeved on the surface of the guide rod 4014, and both ends of the compression spring 4013 are respectively fixedly connected to the surface of the leveling box 1 and the plastic mounting frame 4012, and the inner side of the plastic mounting frame 4012 is rotatably connected with the upper cleaning roller 4011.

[0028] When in use, the workpiece to be leveled is placed inside the inlet and outlet 103. At this time, the bottom of the workpiece is in contact with the lower cleaning roller 402. At the same time, the upper cleaning roller 4011 is driven to be close to the surface of the workpiece under the thrust of the compression spring 4013. The upper cleaning roller 4011 is guided by the guide rod 4014, and then the workpiece is pushed. At this time, the upper cleaning roller 4011 and the lower cleaning roller 402 can clean the surface of the workpiece to prevent dust from adhering to the surface of the workpiece and affecting the leveling effect. At the same time, since the material of the plastic mounting frame 4012 can be deformed to a certain extent, the plastic mounting frame 4012 can be pried apart to the outside, and the upper cleaning roller 4011 can be removed for replacement. Similarly, the lower cleaning roller 402 can be replaced to realize the cleaning function of the leveling machine on the surface of the workpiece.

[0029] Furthermore, if Figure 3 As shown, a slitting mechanism 3 is provided on the other side of the flat box 1, and a knife groove 301 and a slitting assembly 302 are provided inside the slitting mechanism 3. A knife groove 301 is opened on the other side of the flat box 1, and a slitting assembly 302 is provided above the knife groove 301. The interior of the slitting assembly 302 includes a knife seat 3021, a sliding frame 3022, a slitting electric push rod 3023 and a slitting knife 3024. A sliding frame 3022 is fixed on the other side of the flat box 1, and a knife seat 3021 is provided inside the sliding frame 3022. The knife seat 3021 and the sliding frame 302 2 are slidably matched with each other, a slitting electric push rod 3023 is fixed at the top position of the surface of the flat box 1, and the model of the slitting electric push rod 3023 can be selected from the TA series. The input end of the slitting electric push rod 3023 is electrically connected to the output end of the control row key 101, and one end of the slitting electric push rod 3023 is fixedly connected to the surface of the knife holder 3021. The surface of the knife holder 3021 is provided with a slitting knife 3024, and the slitting knife 3024 is detachably connected to the knife holder 3021 by screws, and the slitting knife 3024 and the knife groove 301 cooperate with each other.

[0030] When in use, if it is necessary to cut the workpiece, the control row of keys 101 can be operated to make the control row of keys 101 control the cutting electric push rod 3023 to work. Under the action of the cutting electric push rod 3023, the knife holder 3021 is driven to slide along the slide frame 3022, and the cutting knife 3024 is driven to cut the workpiece. At the same time, the cutting knife 3024 can be disassembled and replaced by loosening the screws on the surface of the knife holder 3021 to realize the function of the leveling machine to cut the workpiece.

[0031] Furthermore, if Figure 2As shown, a buffer mechanism 5 is provided at the top position inside the leveling box 1, and the buffer mechanism 5 is composed of a buffer component 501 and a hook 502. The hooks 502 are respectively installed on both sides of the surface of the leveling box 1 and the roller frame 202, and a buffer component 501 is provided between the hooks 502. The interior of the buffer component 501 includes a connecting piece 5011, a buffer spring 5012 and a hanging bolt 5013. A connecting piece 5011 is provided between the hooks 502, and a hanging bolt 5013 is fixed on the surface of the connecting piece 5011. The hanging bolt 5013 and the hook 502 are hung and matched with each other, and a buffer spring 5012 is fixed between the connecting pieces 5011.

[0032] When in use, the roller frame 202 moves downward to drive the hook 502 to pull the bolt 5013, stretching the buffer spring 5012. Under the action of the buffer spring 5012, the downward force can be buffered. At the same time, after a period of time, the hook 502 can be pressed, the hook 502 can be removed from the bolt 5013, and the buffer spring 5012 can be replaced to realize the buffer function of the leveling machine.

[0033] Working principle: When in use, first put the workpiece to be leveled into the inlet and outlet 103, at this time, the bottom of the workpiece contacts the lower cleaning roller 402, and at the same time, the upper cleaning roller 4011 is driven to be close to the surface of the workpiece under the thrust of the compression spring 4013, and the upper cleaning roller 4011 is guided by the guide rod 4014, and then the workpiece is pushed. At this time, the upper cleaning roller 4011 and the lower cleaning roller 402 can clean the surface of the workpiece to prevent dust from adhering to the surface of the workpiece and affecting the leveling effect. At the same time, since the material of the plastic mounting frame 4012 can be deformed to a certain extent, the plastic mounting frame 4012 can be broken outwards, and the upper cleaning roller 4011 can be removed for replacement. Similarly, the lower cleaning roller 402 can be replaced to realize the cleaning function of the leveling machine on the surface of the workpiece, thereby avoiding the phenomenon that the leveling effect is affected by dust adhering to the surface of the workpiece when the leveling machine is used.

[0034] Then the workpiece enters between the leveling rollers 204, and then the control row of keys 101 is operated to make the control row of keys 101 control the driving motor 201 and the leveling electric push rod 203 to work, and the roller frame 202 is driven to slide downward along the leveling box 1 under the action of the leveling electric push rod 203, and the leveling rollers 204 on the surface of the roller frame 202 move downward, so that the leveling rollers 204 are tightly attached to both sides of the workpiece. At the same time, under the action of the driving motor 201, the leveling rollers 204 are driven to rotate to level the workpiece, so as to realize the leveling function of the leveling machine.

[0035] When the roller frame 202 moves downward, it drives the hook 502 to pull the hanging bolt 5013, stretching the buffer spring 5012. Under the action of the buffer spring 5012, the downward force can be buffered. At the same time, after a period of time, the hook 502 can be pressed, the hook 502 can be removed from the hanging bolt 5013, and the buffer spring 5012 can be replaced to realize the buffering function of the leveling machine, so that the leveling machine is not easily affected by excessive downward pressure impact during use. Service life.

[0036] After leveling, the workpiece is discharged through the feed port 103. If the workpiece needs to be cut, the control row of keys 101 can be operated to control the cutting electric push rod 3023 to work. Under the action of the cutting electric push rod 3023, the knife holder 3021 is driven to slide along the slide frame 3022, and the cutting knife 3024 is driven to cut the workpiece. At the same time, the cutting knife 3024 can be disassembled and replaced by loosening the screws on the surface of the knife holder 3021 to realize the function of the leveling machine to cut the workpiece, thereby making the leveling machine more functional when used, and finally completing the use of the leveling machine.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A leveling machine, comprising a leveling box (1), characterized in that: The surface of the leveling box (1) is rotatably connected to a box door (102), and a control row of keys (101) is installed on the surface of the box door (102). Both sides of the leveling box (1) are provided with inlet and outlet ports (103). The interior of the leveling box (1) is provided with a leveling mechanism (2), and the leveling mechanism (2) is composed of a driving motor (201), a roller frame (202), a leveling electric push rod (203) and a leveling roller (204). A cleaning mechanism (4) is arranged on one side of the flattening box (1), and the cleaning mechanism (4) is composed of a cleaning component (401) and a lower cleaning roller (402). A slitting mechanism (3) is arranged on the other side of the flattening box (1), and a knife groove (301) and a slitting assembly (302) are arranged inside the slitting mechanism (3). A buffer mechanism (5) is arranged at the top position inside the flattening box (1), and the buffer mechanism (5) is composed of a buffer component (501) and a hook (502).

2. A leveling machine according to claim 1, characterized in that: A roller frame (202) is arranged inside the leveling box (1), and the roller frame (202) and the leveling box (1) are slidably matched with each other. A leveling electric push rod (203) is fixed at the top position of the leveling box (1), and the input end of the leveling electric push rod (203) is electrically connected to the output end of the control row key (101), and one end of the leveling electric push rod (203) passes through the leveling box (1) and is fixedly connected to the surface of the roller frame (202).

3. A leveling machine according to claim 2, characterized in that: The surfaces of the leveling box (1) and the roller frame (202) are both rotatably connected with a leveling roller (204), and the surfaces of the leveling box (1) and the roller frame (202) are both installed with a driving motor (201), the input end of the driving motor (201) is electrically connected to the output end of the control row key (101), and the output end of the driving motor (201) is fixed with a rotating shaft through a coupling, and one end of the rotating shaft is fixedly connected to one end of the leveling roller (204).

4. A leveling machine according to claim 1, characterized in that: A lower cleaning roller (402) is rotatably connected to one side of the leveling box (1) via a plastic frame. The lower cleaning roller (402) is located on one side of the material inlet and outlet (103). A cleaning component (401) is provided above the lower cleaning roller (402).

5. A leveling machine according to claim 4, characterized in that: The interior of the cleaning component (401) includes an upper cleaning roller (4011), a plastic mounting frame (4012), a compression spring (4013) and a guide rod (4014); a guide rod (4014) is provided on one side of the leveling box (1); one end of the guide rod (4014) passes through the leveling box (1) and is fixed with the plastic mounting frame (4012); a compression spring (4013) is sleeved on the surface of the guide rod (4014); the two ends of the compression spring (4013) are respectively fixedly connected to the surface of the leveling box (1) and the plastic mounting frame (4012); and the inner side of the plastic mounting frame (4012) is rotatably connected with the upper cleaning roller (4011).

6. A leveling machine according to claim 1, characterized in that: A knife groove (301) is provided on the other side of the flattening box (1), and a cutting assembly (302) is provided above the knife groove (301).

7. A leveling machine according to claim 6, characterized in that: The interior of the slitting component (302) includes a knife seat (3021), a sliding frame (3022), a slitting electric push rod (3023) and a slitting knife (3024); a sliding frame (3022) is fixed on the other side of the leveling box (1); a knife seat (3021) is arranged inside the sliding frame (3022); the knife seat (3021) and the sliding frame (3022) slide with each other; a slitting electric push rod (3023) is fixed at the top position of the surface of the leveling box (1); the input end of the slitting electric push rod (3023) is electrically connected to the output end of the control row key (101); and one end of the slitting electric push rod (3023) is fixedly connected to the surface of the knife seat (3021).

8. A leveling machine according to claim 7, characterized in that: A slitting knife (3024) is provided on the surface of the knife seat (3021); the slitting knife (3024) and the knife seat (3021) are detachably connected via screws; and the slitting knife (3024) and the knife groove (301) cooperate with each other.

9. A leveling machine according to claim 1, characterized in that: The hooks (502) are respectively installed on both sides of the surface of the leveling box (1) and the roller frame (202), and a buffer component (501) is arranged between the hooks (502).

10. A leveling machine according to claim 9, characterized in that: The buffer component (501) comprises a connecting piece (5011), a buffer spring (5012) and a hanging bolt (5013) inside, the connecting piece (5011) is arranged between the hooks (502), the hanging bolt (5013) is fixed on the surface of the connecting piece (5011), the hanging bolt (5013) and the hook (502) are hung and matched with each other, and the buffer spring (5012) is fixed between the connecting pieces (5011).