A thin material precision leveling machine

Abstract

The application discloses a kind of thin material precision leveling machine, relating to leveling technical field, including rack and controller, rack is installed with machine table, the top side of machine table is installed with first mount, and first mount is provided with lower leveling roller group, the top of first mount is provided with second mount, and second mount is provided with upper leveling roller group, the bottom side of machine table is provided with integrated height adjusting mechanism, integrated height adjusting mechanism is used to adjust the opening between first mount and second mount, and adjust leveling thickness interval, by integrated height adjusting mechanism, user can quickly control first opening for leveling state, and can quickly control second opening for overhaul state, also can more accurately adjust leveling thickness interval, overall structure is concentrated, simple, and form two different precision levels, speed levels for opening control and for leveling thickness interval adjustment, more conducive to control adjustment.

Description

Technical Field

[0001] This invention relates to the field of leveling technology, specifically to a precision leveling machine for thin materials. Background Technology

[0002] Currently, the lifting structure used for the inspection and maintenance of the leveling machine and the adjustment structure used for adjusting the leveling thickness spacing of the leveling machine are both set up separately.

[0003] For example, Chinese utility model patent number 201721200564.5, "A Liftable Leveling and Feeding Machine," proposes a structure that facilitates the inspection and maintenance of the leveling rollers. The upper head of the leveling and feeding machine is pushed upwards by a cylinder. The lower part of the cylinder is fixed to the machine base via a cylinder mounting seat, and the upper part is connected to the upper head of the leveling and feeding machine via a connecting rod. The cylinder controls the lifting and closing of the upper head of the leveling and feeding machine. The upper head of the leveling and feeding machine can be easily lifted by the cylinder, making it convenient for workers to clean internal metal shavings and debris.

[0004] For example, the Chinese utility model "Thin Plate Leveling and Conveying Device" with application number 201520384236.X proposes a structure that can adjust the height of the leveling rollers. The thin plate leveling component includes a set of rotating rollers 1 rotatably connected to the side plates. Insertion blocks 1 are longitudinally inserted into both side plates. A set of rotating rollers 2 are rotatably connected to the two insertion blocks 1. Each rotating roller 2 is located between the two rotating rollers 1. Insertion rods inserted into the upper plate are fixed on both insertion blocks 1. A support plate is fixed to the top of the insertion rod. At least two guide rods are fixed on the upper plate. A hydraulic cylinder is fixed to the top of the guide rod. A pressure sensor is fixed on the piston rod of the hydraulic cylinder. The pressure sensor is fixed together with the support plate. The distance between rotating rollers 1 and rotating rollers 2 can be adjusted by the hydraulic cylinder.

[0005] If a leveling machine is to have both electrically controlled lifting and electrically controlled adjustment of leveling thickness spacing, it needs to have both of the structures mentioned above, making the overall structure quite complex.

[0006] As an extension of patent number 201520384236.X, it can increase the stroke of the hydraulic cylinder, thereby enabling the hydraulic cylinder to control the lifting of the plug block one and the rotating roller two to a greater height, similar to a flipping motion, thus facilitating maintenance.

[0007] While this extended design fulfills the functions of electrically controlled lifting (electric lifting) and electrically controlled adjustment of the leveling thickness spacing, achieving the goal of a centralized and simple overall structure, it concentrates the lifting drive for higher-height maintenance and the lifting drive for adjusting the leveling thickness spacing on the hydraulic cylinder. For thin-material leveling machines that require precise adjustment of the leveling thickness spacing, especially those applied to thin-sheet materials with a thickness range of 0.02~0.6mm, the extended design of the aforementioned patent No. 201520384236.X, with its higher-height lifting drive, makes it difficult to achieve more precise adjustment of the leveling thickness spacing. Summary of the Invention

[0008] To overcome the shortcomings mentioned above, this invention aims to provide a precision thin-material leveling machine with a centralized and simple overall structure, capable of quickly controlling the first opening for leveling and the second opening for maintenance, and also capable of more accurately adjusting the leveling thickness spacing, thus forming two different precision and speed levels for opening control and leveling thickness spacing adjustment.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a thin-material precision leveling machine, comprising a frame and a controller, wherein a machine platform is mounted on the frame, a first mounting seat is mounted on the top side of the machine platform, a lower leveling roller group is disposed on the first mounting seat, a second mounting seat is disposed above the first mounting seat, an upper leveling roller group corresponding to the lower leveling roller group is disposed on the second mounting seat, and an integrated height adjustment mechanism is disposed on the bottom side of the machine platform; the integrated height adjustment mechanism comprises a third mounting seat, a leveling thickness spacing adjustment component, a connecting rod, a mounting frame, and an opening adjustment component; the leveling thickness spacing adjustment component and the opening adjustment component are both electrically controlled drive components capable of telescopic adjustment, and form a drive body and a telescopic end that can move relative to the drive body; the mounting frame Multiple guide rods are connected to the upper part of the machine. These guide rods guide the machine upwards through the machine base and connect to the second mounting base. The third mounting base is connected to the bottom side of the machine base. The telescopic end of the leveling thickness spacing adjustment component is rotatably connected to the third mounting base. The drive body of the leveling thickness spacing adjustment component is rotatably connected to the upper end of the connecting rod. The lower end of the connecting rod is rotatably connected to the mounting frame. The drive body of the opening adjustment component is rotatably connected to the mounting frame. The telescopic end of the opening adjustment component is rotatably connected to the connecting rod. The telescopic movement of the opening adjustment component causes the connecting rod to rotate relative to the mounting frame, forming a first opening that allows the first and second mounting bases to be in a closed or nearly closed state for leveling, and a second opening that allows the first and second mounting bases to be in an open state for maintenance.

[0010] As a further aspect of the present invention: the opening adjustment component is a cylinder, the driving body of the opening adjustment component is the cylinder body, and the telescopic end of the opening adjustment component is the outer end of the piston rod of the cylinder.

[0011] As a further aspect of the present invention: the leveling thickness spacing adjustment component is an electric cylinder, and the telescopic end of the leveling thickness spacing adjustment component is the outer end of the piston rod of the electric cylinder.

[0012] As a further aspect of the present invention: at the first opening, the angle formed between the telescopic direction of the telescopic end of the leveling thickness spacing adjustment member and the connecting rod is greater than 90°.

[0013] As a further aspect of the present invention: at the first opening, the angle formed between the telescopic end of the leveling thickness spacing adjustment member and the connecting rod is any value between 178° and 180°.

[0014] As a further aspect of the present invention: a support frame is connected to the machine base, and a leveling thickness spacing detection unit for detecting the position of the mounting bracket is provided on the support frame.

[0015] As a further aspect of the present invention: the leveling thickness spacing detection unit includes a Hall sensor or magnet mounted on a support frame, and a magnet or Hall sensor mounted on a mounting frame; at the second opening, the magnet is located within the sensing range of the Hall sensor.

[0016] As a further aspect of the present invention: at the second opening, in response to the input of the leveling thickness spacing adjustment command, the controller first controls the opening adjustment component to switch the second opening to the first opening, then determines the current leveling thickness spacing value according to the detection signal of the leveling thickness spacing detection unit, and compares it with the leveling thickness spacing value input by the leveling thickness spacing adjustment command to obtain the spacing difference value, then controls the leveling thickness spacing adjustment component to extend / retract, until the current leveling thickness spacing value determined according to the detection signal of the leveling thickness spacing detection unit is the same as the leveling thickness spacing value input by the leveling thickness spacing adjustment command, then controls the leveling thickness spacing adjustment component to stop extending / retracting.

[0017] As a further aspect of the present invention: the second mounting base is also provided with an adjusting roller and an adjusting roller height adjustment assembly; in the feeding direction of the leveling material, the adjusting roller is located behind the upper leveling roller group.

[0018] As a further aspect of the present invention: the roller height adjustment assembly is a lead screw adjustment assembly.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural view of the present invention;

[0022] Figure 2 This is a structural cross-sectional view of the present invention;

[0023] Figure 3 This is another structural cross-sectional view of the present invention;

[0024] Figure 4 This is a flowchart of the leveling thickness spacing adjustment process in this invention.

[0025] The corresponding labels in the attached diagram are explained as follows:

[0026] Frame-1, Controller-2, Machine Base-3, First Mounting Base-4, Lower Leveling Roller Group-5, Second Mounting Base-6, Upper Leveling Roller Group-7, Third Mounting Base-8, Leveling Thickness Spacing Adjustment Component-9, Connecting Rod-10, Mounting Frame-11, Opening Adjustment Component-12, Guide Rod-13, Support Frame-14, Leveling Thickness Spacing Detection Unit-15, Hall Sensor-151, Magnet-152, Adjusting Roller-16, Adjusting Roller Height Adjustment Component-17, Operation Box-18, Power Switch-19, Speed ​​Adjustment Knob-20, Forward Rotation Button-21, Reverse Rotation Button-22, Time Adjustment Button Knob-23, Opening Adjustment Switch-24, Leveling Thickness Spacing Adjustment Knob-25, Power Output Device-26. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-4 A precision leveling machine for thin materials includes a frame 1 and a controller 2. A machine platform 3 is mounted on the frame 1. A first mounting seat 4 is mounted on the top side of the machine platform 3. A lower leveling roller group 5 is provided on the first mounting seat 4. A second mounting seat 6 is provided above the first mounting seat 4. An upper leveling roller group 7 corresponding to the lower leveling roller group 5 is provided on the second mounting seat 6. An integrated height adjustment mechanism is provided on the bottom side of the machine platform 3.

[0029] The integrated height adjustment mechanism is used to adjust the opening between the first mounting base 4 and the second mounting base 6, as well as to adjust the leveling thickness spacing.

[0030] The integrated height adjustment mechanism includes a third mounting base 8, a leveling thickness spacing adjustment component 9, a connecting rod 10, a mounting bracket 11, and an opening adjustment component 12; the leveling thickness spacing adjustment component 9 and the opening adjustment component 12 are both electrically controlled drive components that can be telescopically adjusted, and form a drive body and a telescopic end that can move relative to the drive body.

[0031] Multiple guide rods 13 are connected to the mounting frame 11. The multiple guide rods 13 are guided upward through the machine base 3 and connected to the second mounting seat 6. The third mounting seat 8 is connected to the bottom side of the machine base 3. The telescopic end of the leveling thickness spacing adjustment component 9 is rotatably connected to the third mounting seat 8. The driving body of the leveling thickness spacing adjustment component 9 is rotatably connected to the upper end of the connecting rod 10. The lower end of the connecting rod 10 is rotatably connected to the mounting frame 11. The driving body of the opening adjustment component 12 is rotatably connected to the mounting frame 11. The telescopic end of the opening adjustment component 12 is rotatably connected to the connecting rod 10.

[0032] The telescopic movement of the opening adjustment component 12 causes the connecting rod 10 to rotate relative to the mounting frame 11. Through the linkage structure formed by the leveling thickness spacing adjustment component 9 and the connecting rod 10, the mounting frame 11, the guide rod 13, and the second mounting seat 6 connected to the guide rod 13 are driven to move upward / downward relative to the machine base 3. This is used to adjust the opening between the first mounting seat 4 and the second mounting seat 6, so that the leveling machine has a first opening that allows the first mounting seat 4 and the second mounting seat 6 to be in a closed or nearly closed state for leveling, and a second opening that allows the first mounting seat 4 and the second mounting seat 6 to be in an open state for maintenance.

[0033] When adjusting the opening between the first mounting base 4 and the second mounting base 6, the opening adjustment component 12 pushes or pulls the connecting rod 10 to rotate, so that the linkage structure formed by the leveling thickness spacing adjustment component 9 and the connecting rod 10 can adjust the distance between the telescopic end of the leveling thickness spacing adjustment component 9 and the lower end of the connecting rod 10 by rotating and folding or rotating and opening. The adjustment range is large and the adjustment is fast.

[0034] After adjusting the opening, the leveling thickness spacing can be adjusted by the leveling thickness spacing adjustment component 9, which is part of the linkage structure. The leveling thickness spacing between the lower leveling roller on the first mounting base 4 and the upper leveling roller on the second mounting base 6 is adjusted. During adjustment, the leveling thickness spacing adjustment component is adjusted by extension and retraction alone, which has better adjustment accuracy.

[0035] The integrated height adjustment mechanism allows users to quickly control the first opening for leveling and the second opening for maintenance. It also enables more precise adjustment of the leveling thickness spacing. The overall structure is centralized and simple, and it forms two different levels of precision and speed for opening control and leveling thickness spacing adjustment, which is more conducive to control and adjustment.

[0036] Preferably, the opening adjustment component 12 is a cylinder, the driving body of the opening adjustment component is the cylinder body, and the telescopic end of the opening adjustment component is the outer end of the piston rod of the cylinder. For easy rotatable connection, the outer end of the piston rod of the cylinder can be connected to a rotating connecting bracket or a rotating connecting block, and the cylinder body of the cylinder can be fixed by a cylinder mounting bracket, and the cylinder mounting bracket and the mounting bracket are rotatably connected.

[0037] Preferably, the leveling thickness spacing adjustment component 9 is an electric cylinder, which can provide a large thrust while achieving an accuracy of 0.01-0.02mm. The telescopic end of the leveling thickness spacing adjustment component is the outer end of the piston rod of the electric cylinder. The leveling thickness spacing adjustment component can be rotatably connected to the third mounting base and the upper end of the connecting rod respectively by means of an upper pin lug and a lower spherical bearing.

[0038] Preferably, when the opening adjustment component 12 controls the first mounting base 4 and the second mounting base 6 of the leveling machine to be in a leveling state that is closed or nearly closed, i.e. at the first opening, the relationship between the extension direction of the extension end of the leveling thickness spacing adjustment component 9 and the position of the connecting rod 10 satisfies the following: the angle formed between the extension direction of the extension end of the leveling thickness spacing adjustment component 9 and the connecting rod 10 is greater than 90°.

[0039] This included angle can also be understood as the angle reached when the connecting rod structure formed by the leveling thickness spacing adjustment component 9 and the connecting rod 10 is opened by rotation.

[0040] like Figure 2 Or, as shown in Figure 3, more preferably, at the first opening, the angle formed between the extension direction of the extension end of the leveling thickness spacing adjustment member 9 and the connecting rod 10 is any value between 178° and 180°, so that the leveling thickness spacing adjustment member 9 is as vertical as possible under pressure, and the connecting rod 10 is as vertical as possible under pressure.

[0041] During leveling, the reaction force exerted by the thin plate on the upper leveling roller group 7 causes the upper leveling roller group 7 and the second mounting base 6 to tend to rise. This reaction force is then transmitted to form vertical pressure on the leveling thickness spacing adjustment member 9 and vertical pressure on the connecting rod 10. At this time, the piston rod of the leveling thickness spacing adjustment member 9 and the connecting rod 10 are kept as vertically pressure-bearing as possible. This is achieved through the rotational connection between the mounting bracket 11 and the connecting rod 10, the rotational connection between the connecting rod 10 and the leveling thickness spacing adjustment member 9, and the leveling thickness spacing adjustment member... The rotatable connection between 9 and the third mounting base 8, during the leveling process, although there are two electrically controlled drive components that can be telescopically adjusted (leveling thickness spacing adjustment component 9 and opening adjustment component 12), the leveling thickness spacing adjustment component 9 and the connecting rod 10 are kept as vertically pressure-bearing as possible during the leveling process. This reduces the pressure or tension applied to the opening adjustment component 12 by the connecting rod structure due to rotation and folding. In this way, it is only necessary to consider the pressure-bearing capacity of one electrically controlled drive component that can be telescopically adjusted, that is, the pressure-bearing capacity of the leveling thickness spacing adjustment component 9.

[0042] In terms of selection, only the quality of the leveling thickness spacing adjustment component 9 needs to be considered, without the need to select high-quality products for both telescopically adjustable electronic drive components. This will help reduce component costs while ensuring accuracy.

[0043] In this embodiment of the invention, a support frame 14 is connected to the bottom side of the machine base 3, and a leveling thickness spacing detection unit 15 for detecting the position of the mounting frame 11 is provided on the support frame 14.

[0044] Furthermore, the leveling thickness gap detection unit 15 includes a Hall sensor or magnet mounted on the support frame 14, and a magnet 152 or Hall sensor mounted on the mounting frame 11. At the second opening, the magnet 152 is located within the sensing range of the Hall sensor 151. Figure 3 As shown, the Hall sensor 151 is mounted on the support frame 14.

[0045] Please refer to details. Figure 4 At the second opening, in response to the input of the leveling thickness spacing adjustment command, the controller 2 first controls the opening adjustment component 12 to switch the second opening to the first opening. Then, it determines the current leveling thickness spacing value according to the detection signal of the leveling thickness spacing detection unit 15, and compares it with the leveling thickness spacing value input by the leveling thickness spacing adjustment command to obtain the spacing difference. Then, it controls the leveling thickness spacing adjustment component 9 to extend / retract until the current leveling thickness spacing value determined by the detection signal of the leveling thickness spacing detection unit 15 is the same as the leveling thickness spacing value input by the leveling thickness spacing adjustment command. Then, it controls the leveling thickness spacing adjustment component to stop extending / retracting.

[0046] like Figure 1As shown, the leveling machine is equipped with an operation box 18, which has operation keys such as a power switch 19, a speed adjustment knob 20, a forward rotation button 21, a reverse rotation button 22, and a time adjustment knob 23.

[0047] The leveling machine is also equipped with a power output device 26, whose power source is a motor. The power input device 26 supplies power to the lower leveling roller group 5. Forward and reverse buttons 21 and 22 control the motor's rotation direction, thereby changing the leveling feed direction. The speed adjustment knob 20 adjusts the motor's rotation speed to obtain different leveling speeds. The leveling speed can be understood as the feeding speed of the upper leveling roller group 7 in conjunction with the lower leveling roller group 5 during leveling. The time adjustment knob 23 controls the motor's rotation time.

[0048] The control box 18 also includes an opening adjustment switch 24 and a leveling thickness spacing adjustment knob 25. The opening adjustment switch 24 controls the opening position (first opening / second opening), and opening switching commands can be input via the switch. The leveling thickness spacing adjustment knob 25 adjusts the leveling thickness spacing value, and leveling thickness spacing adjustment commands can be input via the knob. Different rotation amounts of the leveling thickness spacing adjustment knob correspond to different leveling thickness spacing values; different spacing values ​​are input by rotating the knob.

[0049] By setting up a leveling thickness spacing detection unit 15 for detecting the height position of the mounting frame 11 (equivalent to the second mounting seat 6, equivalent to the upper leveling roller group 7), the actual height position of the mounting frame 11 after each switch from the second opening to the first opening, and the real-time position of the mounting frame 11 during leveling thickness spacing adjustment, can more accurately output the extension and retraction amount of the extension end of the leveling thickness spacing adjustment component 9. This avoids the problem of large adjustment errors caused by directly controlling the extension / retraction of the leveling thickness spacing adjustment component according to the input value to perform a preset stroke.

[0050] With the above improvements, the adjustment accuracy is better when applied to the adjustment of the thickness spacing of thin plates, especially for thin plates with a material thickness of 0.02~0.6mm.

[0051] Preferably, there are multiple Hall sensors, which are arranged vertically at intervals. Adjacent Hall sensors form overlapping sensing areas. When the magnet is in the overlapping sensing area, based on the detection signals of multiple different Hall sensors obtained simultaneously, the detection signal indicating that the magnet is closer to the Hall sensor is selected as the current position of the mounting bracket, which is more conducive to accurately determining the position of the mounting bracket.

[0052] In this embodiment of the invention, the second mounting base 6 is further provided with an adjusting roller 16 and an adjusting roller height adjustment assembly 17, with the adjusting roller 16 located behind the upper leveling roller group 7. Preferably, the adjusting roller height adjustment assembly 17 is a screw adjustment assembly. It is suitable for leveling material strips with different material arcs.

[0053] It will be apparent 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 invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A precision leveling machine for thin materials, comprising a frame and a controller, wherein a machine platform is mounted on the frame, a first mounting seat is mounted on the top side of the machine platform, a lower leveling roller assembly is disposed on the first mounting seat, and a second mounting seat is disposed above the first mounting seat, wherein an upper leveling roller assembly corresponding to the lower leveling roller assembly is disposed on the second mounting seat, characterized in that, The machine base is equipped with an integrated height adjustment mechanism on its bottom side; The integrated height adjustment mechanism includes a third mounting base, a leveling thickness spacing adjustment component, a connecting rod, a mounting bracket, and an opening adjustment component; The leveling thickness spacing adjustment component and the opening adjustment component are both electrically controlled drive components that can be extended and retracted, and they are formed with a drive body and an extension end that can move relative to the drive body; The mounting bracket is connected to multiple guide rods, which are guided upward through the machine base and then connected to the second mounting base. The third mounting base is connected to the bottom side of the machine tool. The telescopic end of the leveling thickness spacing adjustment component is rotatably connected to the third mounting base. The driving body of the leveling thickness spacing adjustment component is rotatably connected to the upper end of the connecting rod. The lower end of the connecting rod is rotatably connected to the mounting frame. The driving body of the opening adjustment component is rotatably connected to the mounting frame. The telescopic end of the opening adjustment component is rotatably connected to the connecting rod. The telescopic movement of the opening adjustment component causes the connecting rod to rotate relative to the mounting bracket, forming a first opening that allows the first mounting seat and the second mounting seat to be closed or nearly closed for leveling, and a second opening that allows the first mounting seat and the second mounting seat to be open for maintenance. in, A support frame is connected to the machine base, and a leveling thickness and spacing detection unit for detecting the position of the mounting frame is provided on the support frame; At the second opening, in response to the input of the leveling thickness spacing adjustment command, the controller first controls the opening adjustment component to switch the second opening to the first opening. Then, based on the detection signal from the leveling thickness spacing detection unit, the current leveling thickness spacing value is determined, and compared with the leveling thickness spacing value input by the leveling thickness spacing adjustment command to obtain the spacing difference. Next, the leveling thickness spacing adjustment component is controlled to extend / retract until the current leveling thickness spacing value determined by the detection signal of the leveling thickness spacing detection unit is the same as the leveling thickness spacing value input by the leveling thickness spacing adjustment command. Then, the leveling thickness spacing adjustment component is controlled to stop extending / retracting.

2. The thin-material precision leveling machine according to claim 1, characterized in that, The opening adjustment component is a cylinder, the driving body of the opening adjustment component is the cylinder body, and the telescopic end of the opening adjustment component is the outer end of the piston rod of the cylinder.

3. A thin-material precision leveling machine according to claim 1, characterized in that, The leveling thickness spacing adjustment component is an electric cylinder, and the telescopic end of the leveling thickness spacing adjustment component is the outer end of the piston rod of the electric cylinder.

4. A thin-material precision leveling machine according to claim 1, characterized in that, At the first opening, the angle between the telescopic end of the leveling thickness spacing adjustment component and the connecting rod is greater than 90°.

5. A thin-material precision leveling machine according to claim 4, characterized in that, At the first opening, the angle formed between the telescopic end of the leveling thickness spacing adjustment component and the connecting rod is any value between 178° and 180°.

6. A thin-material precision leveling machine according to claim 1, characterized in that, The leveling thickness spacing detection unit includes a Hall sensor or magnet mounted on a support frame, and a magnet or Hall sensor mounted on a mounting frame. At the second opening, the magnet is within the sensing range of the Hall sensor.

7. A thin-material precision leveling machine according to claim 1, characterized in that, The second mounting base is also provided with an adjusting roller and an adjusting roller height adjustment assembly; In the feeding direction of the leveling material, the adjusting roller is located behind the upper leveling roller group.

8. A thin-material precision leveling machine according to claim 7, characterized in that, The height adjustment assembly for the adjusting roller is a screw adjustment assembly.

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