Movable cutting type paper cutter

Abstract

The utility model discloses a movable cutting type paper cutter, and relates to the technical field of paper cutters. A portal frame is fixedly installed on the top face of the cutting plate, paper pressing mechanisms are fixedly installed on the left side face and the right side face of the inner wall of the portal frame, pushing mechanisms are arranged on the surfaces of the paper pressing mechanisms, smoothing wheels are rotatably installed on the surfaces of moving components of the pushing mechanisms, and the lowest point of each smoothing wheel is flush with the surface of the lowest point of the corresponding paper pressing mechanism. A lifting box is fixedly installed on the surface of the pushing mechanism moving part, paper feeding rollers are arranged at the bottom of the lifting box, and a roller driving mechanism used for driving the paper feeding rollers to rotate is arranged in the lifting box. The paper pressing mechanism is controlled to enable the lowest point of the paper pressing mechanism and the lowest point of the smoothing wheel to synchronously extrude and make contact with the paper face, the pushing mechanism drives the smoothing wheel to roll from the side close to the lowest point of the paper pressing mechanism to the other side, and therefore the paper face is smoothed, the smoothing wheel does not need to be driven to move through manual operation, a cutter is effectively prevented from accidentally injuring the human body, and safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of paper cutters, in particular to a mobile cutting type paper cutter. Background Art

[0002] As a common paper cutting tool, paper trimmer includes a cutting knife, a lower knife mechanism and a positioning mechanism. It can accurately and quickly position and cut paper. Compared with manual cutting with a knife, it is more accurate, efficient and has a better cutting effect. The mobile cutting paper trimmer can cut larger paper by driving the paper to move.

[0003] A Chinese patent with authorization announcement number CN216335698U in the prior art discloses a mobile cutting paper trimmer, which is provided with a smoothing wheel and a connecting block. A rotatable bearing hole is provided inside the connecting block. The smoothing wheel is inserted into the interior of the connecting block through a docking block provided on the surface. The smoothing wheel can rotate under the connecting block. A soft fur layer is provided on the surface of the smoothing wheel. When the smoothing wheel is turned to rotate, the surface of the smoothing wheel will scrape the surface of the paper to smooth the paper, thereby preventing wrinkles in the paper from affecting the cutting effect during cutting.

[0004] The above-mentioned prior art solutions have the following defects: there is a lack of an automated structure to drive the smoothing wheel to move, so manual operation is required to drive the smoothing wheel to move in order to smooth the paper. During the manual operation, the paper cutting mechanism suspended above the fixed base is prone to collision with the hand, causing hand injuries to the operator, and the safety is poor.

[0005] A mobile cutting paper cutter is proposed for this purpose. Utility Model Content

[0006] The purpose of the utility model is to solve the problems mentioned in the above background technology, and the utility model provides a mobile cutting paper trimmer.

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] A mobile cutting paper cutter comprises a cutting plate, a gantry is fixedly installed on the top surface of the cutting plate, a lateral adjustment mechanism is provided on the top wall surface of the gantry, a longitudinal knife transport mechanism is fixedly installed on the surface of a moving part of the lateral adjustment mechanism, a first electric push rod is fixedly installed on the surface of a moving part of the longitudinal knife transport mechanism, a cutting knife is fixedly connected to the telescopic end of the first electric push rod, a paper pressing mechanism is fixedly installed on the left and right sides of an inner wall of the gantry, a pushing mechanism is provided on the surface of the paper pressing mechanism, a smoothing wheel is rotatably installed on the surface of the moving part of the pushing mechanism, the lowest point of the smoothing wheel is flush with the lowest point of the paper pressing mechanism, a lifting box is fixedly installed on the surface of the moving part of the pushing mechanism, a paper feeding roller is provided at the bottom of the lifting box, and a roller driving mechanism for driving the paper feeding roller to rotate is provided inside the lifting box.

[0009] Furthermore, a positioning line is engraved on the surface of the movable component of the lateral positioning mechanism, and a scale line is engraved on the surface of the top wall of the cutting plate.

[0010] Furthermore, the longitudinal knife transport mechanism includes a limit box, which is fixedly installed on the surface of the moving part of the transverse positioning mechanism, and a first motor is fixedly installed on the front of the limit box, and a first threaded rod is fixedly connected to the output end of the first motor, and the first threaded rod is rotatably connected to the front and rear side walls of the limit box, and a slider is slidably installed on the inner wall surface of the limit box, and the slider is threadedly installed on the surface of the first threaded rod, and the first electric push rod is fixedly installed on the bottom surface of the slider.

[0011] Furthermore, the paper pressing mechanism includes a fixed plate, which is fixedly installed on the left and right sides of the inner wall of the gantry, and a second electric push rod is fixedly installed on the bottom surface of the fixed plate, and an auxiliary plate and a paper pressing paper are respectively fixedly installed on the telescopic end surfaces of the second electric push rod on both sides, and the bottom surface of the paper pressing paper is flush with the bottom surface of the smoothing wheel, and the bottom surface of the auxiliary plate is higher than the bottom surface of the paper pressing paper.

[0012] Furthermore, the pushing mechanism includes a second motor and a sliding rod, the second motor is fixedly installed on the right side of the pressing paper board, the output end of the second motor is fixedly connected to the second threaded rod, the second threaded rod is rotatably connected to the auxiliary plate and the surface of the pressing paper board, the sliding rod is fixedly installed between the opposite surfaces of the auxiliary plate and the pressing paper board, a moving box is slidably installed on the surface of the sliding rod, the moving box is threadedly installed on the surface of the second threaded rod, and the smoothing wheel is rotatably installed between the front and rear side surfaces of the inner wall of the moving box and protrudes from the bottom surface of the moving box.

[0013] Furthermore, the lifting box includes a third electric push rod and a U-shaped box, the third electric push rod is fixedly installed on the rear part of the top surface of the moving box, the U-shaped box is fixedly installed on the telescopic end surface of the third electric push rod, the roller driving mechanism includes a third motor, the third motor is fixedly installed on the surface of the U-shaped box, the output end of the third motor is fixedly connected with a driving shaft, the driving shaft is rotatably installed on the left and right sides of the inner wall of the U-shaped box, the surface of the driving shaft is fixedly sleeved with a driving pulley, the number of the driving pulleys is two and they are symmetrically arranged on the left and right, the surface of the driving pulley is meshed with a belt, the inner surface of the belt is meshed with a driven pulley, the surface of the driven pulley is fixedly inserted with a driven shaft, the driven shaft is rotatably installed on the surface of the inner wall of the U-shaped box, the paper feeding roller is fixedly sleeved on the surface of the driven shaft and protrudes from the bottom surface of the U-shaped box, and the paper feeding roller is arranged on the left and right sides of the moving box.

[0014] The beneficial effects of the utility model are as follows:

[0015] The paper pressing mechanism is controlled so that its lowest point and the lowest point of the smoothing wheel are synchronously squeezed and contacted with the paper surface, and the pushing mechanism drives the smoothing wheel to roll from one side close to the lowest point of the paper pressing mechanism to the other side, thereby smoothing the paper surface. There is no need for manual operation to drive the smoothing wheel to move, which effectively avoids accidental injury to the human body by the cutter, and is safer. The paper pressing mechanism is controlled so that its lowest point leaves the paper surface. At this time, the smoothing wheel also leaves the paper surface, and the lifting box drives the paper feeding roller to move downward and contact the paper surface. The paper feeding roller is driven to roll through the roller driving mechanism, and the friction between the paper feeding roller and the paper surface is used to move the paper on the rear side forward, thereby realizing automatic paper feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a side sectional view of the three-dimensional structure of the utility model;

[0018] Figure 3 This is a front cross-sectional view of the three-dimensional structure of the roller drive mechanism of the utility model;

[0019] Reference numerals: 1, cutting board; 2, gantry; 3, horizontal adjustment mechanism; 4, positioning line; 5, scale line; 6, longitudinal knife transport mechanism; 601, limit box; 602, first motor; 603, first threaded rod; 604, slider; 7, first electric push rod; 8, cutting knife; 9, paper pressing mechanism; 901, fixed plate; 902, second electric push rod; 903, auxiliary plate; 904, paper pressing board; 10, push rod Driving mechanism; 101, second motor; 102, second threaded rod; 103, sliding rod; 104, moving box; 11, smoothing wheel; 12, lifting box; 121, third electric push rod; 122, U-shaped box; 13, roller driving mechanism; 131, third motor; 132, driving shaft; 133, driving pulley; 134, driven pulley; 135, belt; 136, driven shaft; 14, paper feeding roller. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] like Figures 1 to 3 As shown, a mobile cutting paper cutter comprises a cutting plate 1, a gantry 2 is fixedly installed on the top surface of the cutting plate 1, a lateral positioning mechanism 3 is provided on the top wall surface of the gantry 2, a longitudinal knife transport mechanism 6 is fixedly installed on the surface of the moving part of the lateral positioning mechanism 3, a first electric push rod 7 is fixedly installed on the surface of the moving part of the longitudinal knife transport mechanism 6, a cutting knife 8 is fixedly connected to the telescopic end of the first electric push rod 7, a paper pressing mechanism 9 is fixedly installed on the left and right sides of the inner wall of the gantry 2, a pushing mechanism 10 is provided on the surface of the paper pressing mechanism 9, a smoothing wheel 11 is rotatably installed on the surface of the moving part of the pushing mechanism 10, the lowest point of the smoothing wheel 11 is flush with the lowest point of the surface of the paper pressing mechanism 9, a lifting box 12 is fixedly installed on the surface of the moving part of the pushing mechanism 10, a paper feeding roller 14 is provided at the bottom of the lifting box 12, and a roller driving mechanism 13 for driving the paper feeding roller 14 to rotate is provided inside the lifting box 12.

[0026] More specifically, by controlling the paper pressing mechanism 9 so that its lowest point and the lowest point of the smoothing wheel 11 are synchronously squeezed and contacted with the paper surface, the pushing mechanism 10 drives the smoothing wheel 11 to roll from one side close to the lowest point of the paper pressing mechanism 9 to the other side, thereby smoothing the paper surface, and no manual operation is required to drive the smoothing wheel 11 to move, which effectively avoids the cutting knife 8 from accidentally injuring the human body, and is safer. The lateral adjustment mechanism 3 drives the cutting knife 8 to move horizontally to adjust the cutting position, and the telescopic end of the first electric push rod 7 drives the cutting knife 8 to move downward and contact the paper surface, and the longitudinal knife transport mechanism 6 drives the cutting knife 8 to move longitudinally to complete the cutting action, and the paper pressing mechanism 9 is controlled to make its lowest point leave the paper surface. At this time, the smoothing wheel 11 also leaves the paper surface, and the lifting box 12 drives the paper feeding roller 14 to move downward and then contact the paper surface, and the roller driving mechanism 13 drives the paper feeding roller 14 to roll, and the friction between the paper feeding roller 14 and the paper surface is used to move the paper on the rear side forward, so as to realize automatic paper feeding.

[0027] The surface of the moving part of the lateral positioning mechanism 3 is engraved with a positioning line 4, and the surface of the top wall of the cutting board 1 is engraved with a scale line 5.

[0028] Specifically, through the coordination of the positioning line 4 and the scale line 5, it is convenient to quickly and accurately determine the cutting position, thereby effectively improving the cutting accuracy and efficiency.

[0029] The longitudinal knife transport mechanism 6 includes a limit box 601, which is fixedly installed on the surface of the moving part of the transverse positioning mechanism 3. A first motor 602 is fixedly installed on the front of the limit box 601, and a first threaded rod 603 is fixedly connected to the output end of the first motor 602. The first threaded rod 603 is rotatably connected to the front and rear side walls of the limit box 601. A slider 604 is slidably installed on the inner wall surface of the limit box 601. The slider 604 is threadedly installed on the surface of the first threaded rod 603, and the first electric push rod 7 is fixedly installed on the bottom surface of the slider 604.

[0030] Specifically, the output end of the first motor 602 drives the first threaded rod 603 to rotate, so that the slider 604 slidably installed in the limit box 601 and threadedly installed on the surface of the first threaded rod 603 moves forward and backward, thereby driving the bottom surface of the slider 604 fixedly installed on the first electric push rod 7 and the cutting knife 8 to move forward and backward synchronously, so that the cutting knife 8 in contact with the paper surface can quickly complete the cutting action.

[0031] The paper pressing mechanism 9 includes a fixed plate 901, which is fixedly installed on the left and right sides of the inner wall of the gantry 2. A second electric push rod 902 is fixedly installed on the bottom surface of the fixed plate 901, and an auxiliary plate 903 and a paper pressing paper 904 are fixedly installed on the telescopic end surfaces of the second electric push rod 902 on both sides. The bottom surface of the paper pressing paper 904 is flush with the bottom surface of the smoothing wheel 11, and the bottom surface of the auxiliary plate 903 is higher than the bottom surface of the paper pressing paper 904.

[0032] Specifically, the telescopic end of the second electric push rod 902 drives the auxiliary plate 903 and the paper pressing plate 904 to rise and fall, and the paper pressing plate 904 moves downward to cooperate with the cutting plate 1 to squeeze and fix one side of the paper. At the same time, the smoothing wheel 11 also squeezes the paper, and the auxiliary plate 903 on the other side is in a suspended state, so that the other side of the paper remains free. When the pushing mechanism 10 drives the smoothing wheel 11 to move from the side close to the paper pressing plate 904 to the auxiliary plate 903, the paper is gradually smoothed and finally stays on the initially free side of the paper, squeezing and fixing this side to facilitate cutting.

[0033] The pushing mechanism 10 includes a second motor 101 and a sliding rod 103. The second motor 101 is fixedly installed on the right side of the paper pressing plate 904. The output end of the second motor 101 is fixedly connected to the second threaded rod 102. The second threaded rod 102 is rotatably connected to the surfaces of the auxiliary plate 903 and the paper pressing plate 904. The sliding rod 103 is fixedly installed between the opposite surfaces of the auxiliary plate 903 and the paper pressing plate 904. A moving box 104 is slidably installed on the surface of the sliding rod 103. The moving box 104 is threadedly installed on the surface of the second threaded rod 102. The smoothing wheel 11 is rotatably installed between the front and rear side surfaces of the inner wall of the moving box 104 and protrudes from the bottom surface of the moving box 104.

[0034] Specifically, the output end of the second motor 101 drives the second threaded rod 102 to rotate. Since the moving box 104 is threadedly installed on the surface of the second threaded rod 102 and slidably installed on the surface of the sliding rod 103, when the second threaded rod 102 rotates, the moving box 104 will move left and right along the sliding rod 103 and the surface of the second threaded rod 102, thereby causing the smoothing wheel 11 rotatably installed at the bottom to move left and right synchronously. When the smoothing wheel 11 contacts the paper surface, it will roll under the action of friction.

[0035] The lifting box 12 includes a third electric push rod 121 and a U-shaped box 122. The third electric push rod 121 is fixedly installed on the rear part of the top surface of the moving box 104. The U-shaped box 122 is fixedly installed on the telescopic end surface of the third electric push rod 121. The roller drive mechanism 13 includes a third motor 131. The third motor 131 is fixedly installed on the surface of the U-shaped box 122. The output end of the third motor 131 is fixedly connected with a driving shaft 132. The driving shaft 132 is rotatably installed on the left and right sides of the inner wall of the U-shaped box 122. The surface of the driving shaft 132 is fixedly mounted. There are two driving pulleys 133, and the number of driving pulleys 133 is symmetrical. A belt 135 is meshed with the surface of the driving pulley 133, and a driven pulley 134 is meshed with the inner surface of the belt 135. A driven shaft 136 is fixedly inserted on the surface of the driven pulley 134, and the driven shaft 136 is rotatably installed on the inner wall surface of the U-shaped box 122. The paper feeding roller 14 is fixedly sleeved on the surface of the driven shaft 136 and protrudes from the bottom surface of the U-shaped box 122. The paper feeding roller 14 is arranged on the left and right sides of the mobile box 104.

[0036] Specifically, the telescopic end of the third electric push rod 121 moves to drive the U-shaped box 122 to rise and fall, and then drives the paper feeding roller 14 at the bottom of the U-shaped box 122 to rise and fall synchronously, so as to control the paper feeding roller 14 to be suspended in the air or in contact with the paper surface. After the third motor 131 is turned on, its output end drives the active shaft 132 to rotate, and the active shaft 132 drives the active pulley 133 to rotate. The active pulley 133 drives the belt 135 meshed on its surface and the driven pulley 134 meshed with the surface of the belt 135 to move synchronously, so that the driven pulleys 134 on both sides rotate synchronously, and then the driven shaft 136 fixedly mounted on the surface of the driven pulley 134 rotates, and finally drives the two paper feeding rollers 14 fixedly mounted on the surface of the driven shaft 136 to rotate synchronously. By the paper feeding roller 14 contacting and rotating with the paper surface, the paper can be moved from back to front, thereby realizing automatic paper feeding.

[0037] In summary: by controlling the paper pressing mechanism 9 so that its lowest point and the lowest point of the smoothing wheel 11 are synchronously squeezed and contacted with the paper surface, the pushing mechanism 10 drives the smoothing wheel 11 to roll from one side close to the lowest point of the paper pressing mechanism 9 to the other side, so as to smooth the paper surface, and no manual operation is required to drive the smoothing wheel 11 to move, which effectively avoids the cutting knife 8 from accidentally injuring the human body, and is safer. The paper pressing mechanism 9 is controlled so that its lowest point leaves the paper surface. At this time, the smoothing wheel 11 also leaves the paper surface, and the lifting box 12 drives the paper feeding roller 14 to move downward and contact the paper surface. The paper feeding roller 14 is driven to roll by the roller driving mechanism 13, and the friction between the paper feeding roller 14 and the paper surface is used to move the paper on the rear side forward, so that automatic paper feeding can be achieved.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mobile cutting paper cutter, characterized in that: The invention comprises a cutting plate (1), a gantry (2) is fixedly mounted on the top surface of the cutting plate (1), a lateral positioning mechanism (3) is arranged on the top wall surface of the gantry (2), a longitudinal knife transport mechanism (6) is fixedly mounted on the surface of the moving part of the lateral positioning mechanism (3), a first electric push rod (7) is fixedly mounted on the surface of the moving part of the longitudinal knife transport mechanism (6), a cutting knife (8) is fixedly connected to the telescopic end of the first electric push rod (7), and a paper pressing mechanism (9) is fixedly mounted on the left and right sides of the inner wall of the gantry (2). The surface of the paper pressing mechanism (9) is provided with a pushing mechanism (10), a smoothing wheel (11) is rotatably mounted on the surface of a moving part of the pushing mechanism (10), the lowest point of the smoothing wheel (11) is flush with the lowest point of the surface of the paper pressing mechanism (9), a lifting box (12) is fixedly mounted on the surface of the moving part of the pushing mechanism (10), a paper feeding roller (14) is disposed at the bottom of the lifting box (12), and a roller driving mechanism (13) for driving the paper feeding roller (14) to rotate is disposed inside the lifting box (12).

2. The mobile cutting paper trimmer according to claim 1, characterized in that: The surface of the moving part of the transverse positioning mechanism (3) is engraved with a positioning line (4), and the surface of the top wall of the cutting plate (1) is engraved with a scale line (5).

3. The mobile cutting paper trimmer according to claim 1, characterized in that: The longitudinal knife transport mechanism (6) comprises a limit box (601), the limit box (601) is fixedly mounted on the surface of the moving part of the transverse positioning mechanism (3), a first motor (602) is fixedly mounted on the front of the limit box (601), a first threaded rod (603) is fixedly connected to the output end of the first motor (602), the first threaded rod (603) is rotatably connected to the front and rear side walls of the limit box (601), a slider (604) is slidably mounted on the inner wall surface of the limit box (601), the slider (604) is threadedly mounted on the surface of the first threaded rod (603), and the first electric push rod (7) is fixedly mounted on the bottom surface of the slider (604).

4. The mobile cutting paper trimmer according to claim 1, characterized in that: The paper pressing mechanism (9) comprises a fixed plate (901), wherein the fixed plate (901) is fixedly mounted on the left and right sides of the inner wall of the gantry (2), and a second electric push rod (902) is fixedly mounted on the bottom surface of the fixed plate (901), and an auxiliary plate (903) and a paper pressing plate (904) are fixedly mounted on the telescopic end surfaces of the second electric push rod (902) on both sides, respectively, and the bottom surface of the paper pressing plate (904) is flush with the bottom surface of the smoothing wheel (11), and the bottom surface of the auxiliary plate (903) is higher than the bottom surface of the paper pressing plate (904).

5. The mobile cutting paper trimmer according to claim 4, characterized in that: The pushing mechanism (10) comprises a second motor (101) and a sliding rod (103); the second motor (101) is fixedly mounted on the right side of the paper pressing plate (904); the output end of the second motor (101) is fixedly connected with a second threaded rod (102); the second threaded rod (102) is rotatably connected to the surfaces of the auxiliary plate (903) and the paper pressing plate (904); the sliding rod (103) is fixedly mounted between the opposite surfaces of the auxiliary plate (903) and the paper pressing plate (904); a moving box (104) is slidably mounted on the surface of the sliding rod (103); the moving box (104) is threadedly mounted on the surface of the second threaded rod (102); the smoothing wheel (11) is rotatably mounted between the front and rear side surfaces of the inner wall of the moving box (104) and protrudes from the bottom surface of the moving box (104).

6. The mobile cutting paper trimmer according to claim 5, characterized in that: The lifting box (12) comprises a third electric push rod (121) and a U-shaped box (122), wherein the third electric push rod (121) is fixedly mounted on the rear portion of the top surface of the moving box (104), and the U-shaped box (122) is fixedly mounted on the telescopic end surface of the third electric push rod (121). The roller driving mechanism (13) comprises a third motor (131), wherein the third motor (131) is fixedly mounted on the surface of the U-shaped box (122), and an active rotating shaft (132) is fixedly connected to the output end of the third motor (131), wherein the active rotating shaft (132) is rotatably mounted on the left and right side surfaces of the inner wall of the U-shaped box (122), and the surface of the active rotating shaft (132) is fixedly mounted. A driving pulley (133) is mounted thereon, the number of the driving pulleys (133) being two and symmetrically arranged on the left and right sides, a belt (135) being meshedly arranged on the surface of the driving pulley (133), a driven pulley (134) being meshedly arranged on the inner surface of the belt (135), a driven rotating shaft (136) being fixedly inserted on the surface of the driven pulley (134), the driven rotating shaft (136) being rotatably mounted on the inner wall surface of the U-shaped box (122), the paper feeding roller (14) being fixedly mounted on the surface of the driven rotating shaft (136) and protruding from the bottom surface of the U-shaped box (122), and the paper feeding roller (14) being arranged on the left and right sides of the movable box (104).

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