A paper flattening device and its control method

Abstract

The present invention belongs to the technical field of paper processing, and particularly relates to a paper flattening device, comprising: a frame, a workbench, two pressing plates, a horizontal driving mechanism, and a vertical driving mechanism. The workbench is arranged below the frame, and the two pressing plates, the horizontal driving mechanism, and the vertical driving mechanism are all arranged above the workbench. The workbench is used for placing paper. The two pressing plates can approach or move away from each other under the drive of the horizontal driving mechanism. The vertical driving mechanism is used to drive the horizontal driving mechanism and the two pressing plates to approach or move away from the workbench. The present invention has the effect of being able to flatten wrinkled and curled-edge papers, reducing paper waste.

Description

Technical Field

[0001] The invention belongs to the technical field of paper processing, and in particular relates to a paper flattening device and a control method thereof. Background Art

[0002] After paper is produced and formed, it needs to be transferred and transported many times. During this process, it is easy to cause problems such as paper wrinkles and curled corners, which will eventually lead to paper scrapping and waste of resources. Therefore, a paper flattening device is needed to flatten the wrinkled and curled paper. Summary of the invention

[0003] The purpose of the present invention is to provide a paper flattening device and a control method thereof in view of the above-mentioned technical problems, which can flatten wrinkled and raised corner paper and reduce the waste of paper.

[0004] In view of this, the present invention provides a paper flattening device, comprising: a frame, a workbench, two pressing plates, a horizontal driving mechanism, and a vertical driving mechanism.

[0005] The workbench is arranged at the lower part of the frame, and the two pressing plates, the horizontal driving mechanism and the vertical driving mechanism are arranged above the workbench;

[0006] The workbench is used to place papers;

[0007] The two pressing plates can be driven by the horizontal driving mechanism to move closer to each other or farther away from each other;

[0008] The vertical driving mechanism is used to drive the horizontal driving mechanism and the two pressing plates to move closer to or away from the workbench.

[0009] In this technical solution, paper with wrinkles and raised corners is placed on the upper surface of the workbench, and the vertical driving mechanism drives the pressing plate to rise and fall to flatten the middle part of the paper. The horizontal driving mechanism drives the two pressing plates to move away from each other after flattening the paper, thereby performing a flattening process on the plane of the paper, flattening the wrinkles on the paper, and completely flattening the paper from the middle to the corners, thereby reducing paper waste.

[0010] In the above technical solution, further, the vertical driving mechanism includes a driving cylinder, which is arranged on the upper part of the frame, and the movable end of the driving cylinder is connected to the horizontal driving mechanism to drive the horizontal driving mechanism to move vertically.

[0011] In the above technical solution, further, the horizontal driving mechanism includes:

[0012] A main frame body connected to the vertical drive mechanism;

[0013] A horizontal driving gear, the rotation of which is arranged on the main frame;

[0014] A driving motor is provided on the main frame and is used to drive the horizontal driving gear to rotate;

[0015] A first driving frame is slidably mounted on the main frame body, and is provided with a first rack, the lower end of which is connected to the first pressing plate, and the first rack is meshedly connected to the upper portion of the horizontal driving gear;

[0016] A second driving frame is slidably mounted on the main frame, and is provided with a second rack, the lower end of which is connected to the second pressing plate, and the second rack is meshedly connected to the lower portion of the horizontal driving gear;

[0017] The bottom surfaces of the two pressing plates are located at the same height.

[0018] In the above technical solution, further, a first guide groove is opened on the side wall of the first driving frame in the horizontal direction, and a first guide rod is provided on the main frame body. The first guide rod is slidably arranged in the first guide groove in the horizontal direction.

[0019] In the above technical solution, further, a second guide groove is opened on the side wall of the second driving frame in the horizontal direction, and a second guide rod is provided on the main frame body. The second guide rod is slidably arranged in the second guide groove in the horizontal direction.

[0020] In the above technical solution, further, the horizontal driving mechanism also includes a locking mechanism, which can limit the rotation of the horizontal driving gear when connected to the first driving frame, and the locking mechanism includes:

[0021] A rotating block is rotatably mounted on the main frame and is located above the first driving frame;

[0022] A clamping column, which is arranged at the lower part of the rotating block;

[0023] An arc-shaped slot is provided on the upper surface of the first driving frame and passes through two opposite side walls of the first driving frame;

[0024] The rotating block can clamp the clamping column into the arc-shaped clamping groove during the rotation process.

[0025] In the above technical solution, further, a torsion spring is provided between the rotating block and the main frame, and the torsion spring is squeezed when the clamping column exits the arc-shaped clamping groove.

[0026] In order to facilitate the public to better understand the paper flattening device of the present invention, the present invention also discloses a control method suitable for the above-mentioned paper flattening device, and the control method includes the following steps:

[0027] Step 1: Reset the flattening device so that the two pressing plates are at the closest position and away from the workbench, and the clamping column is locked in the arc-shaped slot to lock the horizontal driving gear;

[0028] Step 2: Place the paper on the surface of the workbench;

[0029] Step 3: Drive the horizontal driving mechanism and two pressing plates to descend through the vertical driving mechanism and press the middle part of the paper;

[0030] Step 4: Rotate the rotating block to withdraw the clamping post from the arc-shaped clamping groove, and start the driving motor to drive the horizontal driving gear to rotate forward. Through the cooperation of the horizontal driving gear with the first rack and the second rack, drive the two pressing plates to move away from each other while pressing the paper. The two pressing plates move from the middle part of the paper to both sides of the paper to complete the flattening of the paper;

[0031] Step 5: Drive the horizontal driving mechanism and two pressing plates to rise away from the workbench through the vertical driving mechanism;

[0032] Step 6: Start the driving motor to drive the horizontal driving gear to rotate in the reverse direction. Through the cooperation of the horizontal driving gear with the first rack and the second rack, drive the two pressing plates to approach each other. When the clamping post contacts the opening of the arc-shaped clamping groove, the clamping post will be clamped into the arc-shaped clamping groove under the action of the torsion spring;

[0033] Step 7: Remove the flattened paper.

[0034] The beneficial effects of the present invention are as follows:

[0035] 1. By setting two pressing plates to flatten the wrinkled and curled-edge paper, and the two pressing plates can move horizontally on the paper to perform dynamic flattening on the paper, with good wrinkle removal effect on the paper;

[0036] 2. By designing the horizontal driving mechanism into a structure of a horizontal driving gear and two driving frames, the two driving frames are meshed and driven with both sides of the horizontal driving gear through two racks. In this way, two driving frames can be driven by one power source, and as long as the rotation direction of the horizontal driving gear is changed, the two pressing plates can be made to approach and move away from each other. The structure is ingenious and convenient for maintenance;

[0037] 3. By setting a locking mechanism to lock one of the driving frames, due to the meshing of the gear and the rack, the horizontal driving gear cannot rotate after one driving frame is locked, so as to ensure that the two pressing plates can reach the closest position to each other every time the horizontal driving mechanism is reset. Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1Schematic diagram of the three-dimensional structure of the present invention in the first direction.

[0040] Figure 2 Schematic diagram of the three-dimensional structure of the present invention in the second direction.

[0041] Figure 3 Schematic diagram of the front view structure of the present invention.

[0042] Figure 4 Schematic diagram of the connection structure between the horizontal driving mechanism and the pressing plate in the present invention. In the figure, the two pressing plates are in a state of approaching each other.

[0043] Figure 5 Schematic diagram of the connection structure between the horizontal driving mechanism and the pressing plate in the present invention. In the figure, the two pressing plates are in a state of moving away from each other.

[0044] Figure 6 Is Figure 2 Partial enlarged structure schematic diagram of part A in

[0045] The markings in the figure are as follows:

[0046] 1 - Frame, 2 - Workbench, 3 - Pressing plate, 4 - Horizontal driving mechanism, 401 - Main frame body, 402 - Horizontal driving gear, 403 - Driving motor, 404 - First driving frame, 4041 - First rack, 405 - Second driving frame, 4051 - Second rack, 406 - First guide groove, 407 - First guide rod, 408 - Second guide groove, 409 - Second guide rod, 5 - Vertical driving mechanism, 6 - Locking mechanism, 601 - Rotating block, 602 - Column, 603 - Arc-shaped card slot. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0048] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0049] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and the number of objects is not limited. For example, the first object can be one or multiple.

[0050] Embodiment 1

[0051] As Figures 1 - 5 shown, this embodiment provides a paper flattening device, including: a frame 1, a workbench 2, two pressing plates 3, a horizontal driving mechanism 4, and a vertical driving mechanism 5;

[0052] Please refer to Figures 1 - 2 , the frame 1 is a U-shaped body placed at 90 degrees, the workbench 2 is arranged at the lower part of the frame 1, and the two pressing plates 3, the horizontal driving mechanism 4, and the vertical driving mechanism 5 are all arranged above the workbench 2; the workbench 2 is used for placing paper; the two pressing plates 3 can approach or move away from each other under the drive of the horizontal driving mechanism 4;

[0053] In this embodiment, the vertical driving mechanism 5 is mainly used to drive the two pressing plates 3 and the horizontal driving mechanism 4 to move vertically to approach or move away from the workbench 2. The vertical driving mechanism 5 can adopt common driving structures in the art, such as the cooperation of a motor, a screw, and a nut, or a ball screw drive, or other driving methods. For the sake of making the structure of the paper flattening device more concrete, in this embodiment, the driving method of a driving cylinder is taken as an example. The fixed end of the driving cylinder is installed at the upper part of the frame 1, the movable end of the driving cylinder can move vertically relative to the fixed end, and the movable end of the driving cylinder is connected to the horizontal driving mechanism 4;

[0054] In this embodiment, the horizontal driving mechanism 4 is mainly used to drive the two pressing plates 3 to approach or move away from each other. The horizontal driving mechanism 4 can adopt a driving structure commonly used in the art. To make the structure of the paper flattening device more concrete, a structure of the horizontal driving mechanism 4 is disclosed in this embodiment.

[0055] The horizontal driving mechanism 4 includes: a main frame body 401, a horizontal driving gear 402, a driving motor 403, a first driving frame 404, a first rack 4041, a second driving frame 405, a second rack 4051, and a locking mechanism 6.

[0056] Please refer to Figure 2 , the main frame body 401 includes a top frame, two side frames, and a back plate, wherein the top frame is connected to the movable end of the driving cylinder; the horizontal driving gear 402 is rotatably arranged on the two side frames through a driving shaft; please refer to Figure 3 , the driving motor 403 is arranged on one of the side frames to drive the horizontal driving gear 402 to rotate. Figure 1 and Figure 2 the driving motor 403 is omitted in

[0057] The first driving frame 404 is L-shaped. The upper part of the first driving frame 404 is a horizontal section, and the lower part is a vertical section. The horizontal section of the first driving frame 404 is located above the horizontal driving gear 402. The horizontal section of the first driving frame 404 is horizontally slidably connected to the two side frames. The first rack 4041 is installed on the bottom surface of the horizontal section of the first driving frame 404. The first rack 4041 is meshed and connected to the upper part of the horizontal driving gear 402. The lower end of the vertical section of the first driving frame 404 is connected to one of the pressing plates 3. A first guiding groove 406 is horizontally opened on the side wall of the horizontal section of the first driving frame 404. First guiding rods 407 are arranged on the two side frames. The first guiding rods 407 are horizontally slidably arranged in the first guiding groove 406.

[0058] The second driving frame 405 is also L-shaped. The upper part of the second driving frame 405 is a horizontal section, and the lower part is a vertical section. However, the vertical section of the second driving frame 405 is shorter than the vertical section of the first driving frame 404. The horizontal section of the second driving frame 405 is located below the horizontal driving gear 402. The horizontal section of the second driving frame 405 is horizontally slidably connected to the two side frames. The second rack 4051 is installed on the upper surface of the horizontal section of the second driving frame 405. The second rack 4051 is meshed and connected to the lower part of the horizontal driving gear 402. The lower end of the vertical section of the second driving frame 405 is connected to the other pressing plate 3. A second guiding groove 408 is horizontally opened on the side wall of the horizontal section of the second driving frame 405. Second guiding rods 409 are arranged on the two side frames. The second guiding rods 409 are horizontally slidably arranged in the second guiding groove 408.

[0059] The two pressing plates 3 have the same structure. Taking one of the pressing plates 3 as an example, the pressing plate 3 is in an inverted T shape as a whole. After being connected to the first driving frame 404 and the second driving frame 405, the bottom surfaces of the two pressing plates 3 are at the same height. At the extreme position where the two pressing plates 3 are close to each other, there is only a small gap between the two pressing plates 3. The gap between the two pressing plates 3 in the attached drawing is only for illustration and does not represent the actual interval size between the two pressing plates 3;

[0060] In addition, please refer to Figure 1 , a control panel is also provided on the side wall of the frame 1 to control the operation of the horizontal driving mechanism 4 and the vertical driving mechanism 5;

[0061] The working principle of the paper flattening device in this embodiment is as follows: Place the paper to be flattened on the upper surface of the workbench 2. Drive the horizontal driving mechanism 4 and the two pressing plates 3 to descend by the driving cylinder to press the middle part of the paper. Then start the driving motor 403 to drive the horizontal driving gear 402 to rotate. The horizontal driving gear 402 drives the first driving frame 404 and the second driving frame 405 to move away from each other, so as to drive the two pressing plates 3 to move from the middle part of the paper to both sides while pressing the paper, flatten the whole paper, and remove the wrinkles and warps of the paper.

[0062] Embodiment 2

[0063] This embodiment provides a paper flattening device. In addition to including the technical solutions of the above embodiment, the horizontal driving mechanism 4 is further limited, as Figures 4 - 6 shown;

[0064] In this embodiment, please refer to Figure 4 , the horizontal driving mechanism 4 further includes a locking mechanism 6. When the locking mechanism 6 is connected to the first driving frame 404, it can limit the rotation of the horizontal driving gear 402;

[0065] The locking mechanism 6 includes: a rotating block 601, a clamping column 602, and an arc-shaped clamping groove 603. Among them, the middle part of the rotating block 601 is rotationally connected to the back plate through a rotating shaft, and the rotating block 601 is located above the first driving frame 404; the clamping column 602 is arranged at the lower part of the rotating block 601. The clamping column 602 can be rotationally connected or fixedly connected to the lower part of the rotating block 601. Please refer to Figure 6, the lower part of the rotating block 601 is a mounting frame wider than the width of the first driving frame 404, and the clamping column 602 is connected to the mounting frame; the arc-shaped clamping groove 603 is opened on the upper surface of the first driving frame 404, and the arc-shaped clamping groove 603 runs through the two opposite side walls of the first driving frame 404. The arc-shaped clamping groove 603 is a section of an arc groove. When the two pressing plates 3 are located at the extreme position of being close to each other, the arc center of the arc-shaped clamping groove 603 coincides with the center of the rotating shaft. During the rotation of the rotating block 601, the clamping column 602 can be clamped into the arc-shaped clamping groove 603. At this time, the first driving frame 404 cannot move in the direction of moving the two pressing plates 3 away from each other. Since the two pressing plates 3 have also reached the extreme position of being close to each other, the first driving frame 404 cannot move in the direction of moving the two pressing plates 3 closer to each other, that is, the first driving frame 404 cannot move horizontally;

[0066] Since the horizontal driving gear 402 is meshed with the first rack 4041 and the second rack 4051, when the first driving frame 404 cannot move horizontally, the first rack 4041 cannot move horizontally either, so that the first driving frame 404 locks the horizontal driving gear 402, and then also locks the second driving frame 405;

[0067] After flattening the paper, the paper flattening device needs to be reset, which includes moving the two pressing plates 3 to the extreme position close to each other. When the two pressing plates 3 reach the reset position, the horizontal driving mechanism 4 is locked by rotating the rotating block 601 to lock the clamping column 602 into the arc-shaped clamping groove 603, ensuring that the two pressing plates 3 can move from the middle of the paper to both sides when the paper flattening device is started next time;

[0068] The rotation of the rotating block 601 can be operated manually or driven by a motor. Manual operation is preferred, as this simplifies the structural design and ensures that the clamping column 602 is already clamped into the arc-shaped clamping groove 603 .

[0069] Example 3

[0070] This embodiment provides a paper flattening device, which, in addition to the technical solutions of the above embodiments, further defines the locking mechanism 6;

[0071] In this embodiment, a torsion spring (not shown in the figure) is arranged between the rotating block 601 and the back plate. When the card column 602 withdraws from the arc-shaped slot 603, the torsion spring is squeezed. When the card column 602 and the opening of the arc-shaped slot 603 are offset, the elastic force of the torsion spring will make the card column 602 close to the upper surface of the first drive frame 404. When the card column 602 and the opening of the arc-shaped slot 603 are opposite to each other, the elastic force of the torsion spring will push the card column 602 into the arc-shaped slot 603.

[0072] Through the design of adding a torsion spring, the clamping post 602 can be automatically clamped into the arc-shaped clamping groove 603, eliminating the step of manual pushing, and the connection between the clamping post 602 and the arc-shaped clamping groove 603 is tighter.

[0073] Embodiment 4

[0074] This embodiment provides a control method for a paper flattening device, and this control method is applicable to the paper flattening device in the foregoing embodiment;

[0075] This control method includes the following steps:

[0076] Step 1: Reset the flattening device to make the two pressing plates 3 in the closest position, and the two pressing plates 3 are away from the workbench 2. At the same time, the clamping post 602 is stuck in the arc-shaped clamping groove 603 to lock the horizontal driving gear 402;

[0077] Step 2: Place the paper on the upper surface of the workbench 2;

[0078] Step 3: Drive the horizontal driving mechanism 4 and the two pressing plates 3 to descend through the vertical driving mechanism 5 and press the middle part of the paper;

[0079] Step 4: Rotate the rotating block 601 to make the clamping post 602 withdraw from the arc-shaped clamping groove 603, and start the driving motor 403 to drive the horizontal driving gear 402 to rotate forward. Through the cooperation of the horizontal driving gear 402 with the first rack 4041 and the second rack 4051, the two pressing plates 3 are driven to move away from each other while pressing the paper. The two pressing plates 3 move from the middle part of the paper to both sides of the paper to complete the flattening of the paper;

[0080] Step 5: Drive the horizontal driving mechanism 4 and the two pressing plates 3 to rise away from the workbench 2 through the vertical driving mechanism 5;

[0081] Step 6: Start the driving motor 403 to drive the horizontal driving gear 402 to rotate in the reverse direction. Through the cooperation of the horizontal driving gear 402 with the first rack 4041 and the second rack 4051, the two pressing plates 3 are driven to approach each other. When the clamping post 602 contacts the opening of the arc-shaped clamping groove 603, the clamping post 602 will be clamped into the arc-shaped clamping groove 603 under the action of the torsion spring;

[0082] Step 7: Remove the flattened paper.

[0083] Before placing the wrinkled and curled paper on the workbench 2, the paper can be preheated first to improve the effect of flattening the paper. When placing the paper, it is necessary to place the paper at a position opposite to the two pressing plates 3 on the upper surface of the workbench 2. A positioning structure or positioning mark can be set on the upper surface of the workbench 2 to facilitate the positioning of the paper. When the two pressing plates 3 press the paper, they first press the middle part of the paper. The force applied by the two pressing plates 3 to press the paper can be adjusted according to the actual operation, and the paper will not be torn during the horizontal movement of the two pressing plates 3; the maximum distance at which the two pressing plates 3 move away from each other is adjustable to facilitate the flattening of different papers.

[0084] Preferably, the two pressing plates 3 are detachably connected to the first driving frame 404 and the second driving frame 405, so that pressing plates 3 of different sizes can be replaced according to the actual specifications of the paper to achieve a better flattening effect.

[0085] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A paper flattening device, comprising: a frame (1), a workbench (2), two pressing plates (3), a horizontal driving mechanism (4), and a vertical driving mechanism (5), characterized in that, the workbench (2) is arranged at the lower part of the frame (1), and the two pressing plates (3), the horizontal driving mechanism (4), and the vertical driving mechanism (5) are all arranged above the workbench (2); the workbench (2) is used for placing papers; the two pressing plates (3) can approach or move away from each other under the drive of the horizontal driving mechanism (4); the vertical driving mechanism (5) is used for driving the horizontal driving mechanism (4) and the two pressing plates (3) to approach or move away from the workbench (2); the horizontal driving mechanism (4) includes: a main frame body (401), which is connected to the vertical driving mechanism (5); a horizontal driving gear (402), which is rotatably arranged on the main frame body (401); a driving motor (403), which is arranged on the main frame body (401) and is used for driving the horizontal driving gear (402) to rotate; a first driving frame (404), which is slidably arranged on the main frame body (401), is provided with a first rack (4041) on it, and its lower end is connected to the first pressing plate (3), and the first rack (4041) is meshed and connected to the upper part of the horizontal driving gear (402); a second driving frame (405), which is slidably arranged on the main frame body (401), is provided with a second rack (4051) on it, and its lower end is connected to the second pressing plate (3), and the second rack (4051) is meshed and connected to the lower part of the horizontal driving gear (402); wherein, the bottom surfaces of the two pressing plates (3) are at the same height; the horizontal driving mechanism (4) further includes a locking mechanism (6), and when the locking mechanism (6) is connected to the first driving frame (404), it can limit the rotation of the horizontal driving gear (402), and the locking mechanism (6) includes: a rotating block (601), which is rotatably arranged on the main frame body (401) and is located above the first driving frame (404); a clamping column (602), which is arranged at the lower part of the rotating block (601); an arc-shaped card slot (603), which is opened on the upper surface of the first driving frame (404) and penetrates through two opposite side walls of the first driving frame (404); wherein, during the rotation of the rotating block (601), the clamping column (602) can be clamped into the arc-shaped card slot (603); a torsion spring is arranged between the rotating block (601) and the main frame body (401), and the torsion spring is squeezed when the clamping column (602) exits the arc-shaped card slot (603).

2. A paper flattening device according to claim 1, characterized in that: the vertical driving mechanism (5) includes a driving cylinder, the driving cylinder is arranged at the upper part of the frame (1), and the movable end of the driving cylinder is connected to the horizontal driving mechanism (4) for driving the horizontal driving mechanism (4) to move vertically.

3. A paper flattening device according to claim 1, characterized in that: A first guiding groove (406) is horizontally formed in a side wall of the first driving frame (404), a first guiding rod (407) is arranged on the main frame body (401), and the first guiding rod (407) is slidably arranged in the first guiding groove (406) in the horizontal direction.

4. A paper flattening device according to claim 1, characterized in that: A second guiding groove (408) is horizontally formed in a side wall of the second driving frame (405), a second guiding rod (409) is arranged on the main frame body (401), and the second guiding rod (409) is slidably arranged in the second guiding groove (408) in the horizontal direction.

5. A control method for a paper flattening device, which is applicable to the paper flattening device according to claim 1, characterized in that the control method includes the following steps: Step 1: Reset the flattening device so that the two pressing plates (3) are in the closest position and the two pressing plates (3) are away from the workbench (2). At the same time, the clamping column (602) is stuck in the arc-shaped clamping groove (603) to lock the horizontal driving gear (402); Step 2: Place the paper on the upper surface of the workbench (2); Step 3: Drive the horizontal driving mechanism (4) and the two pressing plates (3) to descend through the vertical driving mechanism (5) and press the middle part of the paper; Step 4: Rotate the rotating block (601) to make the clamping column (602) withdraw from the arc-shaped clamping groove (603), and start the driving motor (403) to drive the horizontal driving gear (402) to rotate forward. Through the cooperation of the horizontal driving gear (402) with the first rack (4041) and the second rack (4051), the two pressing plates (3) move away from each other while pressing the paper, and the two pressing plates (3) move from the middle part of the paper to both sides of the paper to complete paper flattening; Step 5: Drive the horizontal driving mechanism (4) and the two pressing plates (3) to rise away from the workbench (2) through the vertical driving mechanism (5); Step 6: Start the driving motor (403) to drive the horizontal driving gear (402) to rotate reversely. Through the cooperation of the horizontal driving gear (402) with the first rack (4041) and the second rack (4051), the two pressing plates (3) move closer to each other. When the clamping column (602) contacts the opening of the arc-shaped clamping groove (603), the clamping column (602) will be stuck in the arc-shaped clamping groove (603) under the action of the torsion spring; Step 7: Remove the flattened paper.

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