Positioning and pressing device for a paper cutter

Abstract

The application discloses a positioning and pressing device for a paper cutter and relates to the technical field of paper processing equipment. The positioning and pressing device for the paper cutter is flexible in adjusting the paper stack placing angle through the rotating seat on the placing plate, solves the problems that the traditional equipment cannot be conveniently adjusted and the paper stack is difficult to align in the early stage, and forms a lateral clamping structure with the placing side plate and the wear-resistant pad, so that the paper stack can be arranged and fixed, paper stack loosening and skewing are avoided, and a double alignment structure of a magnetic attraction positioning seat, a magnetic attraction strip, a positioner and a receiver is additionally arranged. A transversely adjustable pressing mechanism is adopted, the position of the pressing plate can be flexibly adjusted according to the actual width of the paper stack, the pressing requirements of paper products of different specifications can be met, the paper stack can be reliably compacted through the electric push rod driving the pressing plate, and the paper stack can be effectively prevented from slipping and warping in the cutting process. The device integrates the functions of feeding adjustment, positioning and pushing, top pressing and hydraulic cutting.

Description

Technical Field

[0001] This invention relates to the field of paper processing equipment technology, and in particular to a positioning and clamping device for a paper cutter. Background Technology

[0002] In industries such as paper processing, printing and binding, paper cutters are the core equipment for batch cutting of paper stacks. As a key component of paper cutters, the positioning and clamping device directly determines the dimensional consistency and pass rate of the cut products. Traditional paper cutter positioning and clamping devices have gradually revealed many technical defects, making it difficult to meet the needs of large-scale, high-precision production.

[0003] The existing paper stack positioning structure design of paper cutters has obvious shortcomings. The operation of paper stack placement and orientation adjustment is cumbersome. Traditional equipment mostly relies on manual adjustment of the paper stack angle to achieve edge alignment, lacking a dedicated flexible orientation mechanism. This is not only time-consuming and labor-intensive, but also makes it difficult to ensure the initial neatness of the paper stack, creating hidden dangers for subsequent cutting deviations. Moreover, most equipment only uses a single stop for limiting, which cannot effectively clamp the paper stack. As a result, the paper stack is prone to loosening and skewing during pushing or cutting, further affecting positioning accuracy. Existing positioning methods are mostly single mechanical positioning, lacking auxiliary alignment and verification structures. When used with ordinary transmission mechanisms for feeding, problems such as positioning deviation and feeding wobbling can easily lead to out-of-tolerance cutting dimensions, resulting in a high defect rate and seriously restricting production efficiency and product quality. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a positioning and clamping device for a paper cutter that can solve the above problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a positioning and clamping device for a paper cutter, comprising a worktable, wherein a work area fence is fixedly connected to the worktable; The workbench is fixedly connected to a first motor at its rear end, and a first lead screw is fixedly connected to the output end of the first motor. A longitudinal first moving groove is provided on the workbench, and the first lead screw passes through the first moving groove. A first moving block is threaded onto the first lead screw, and a pusher plate is fixedly connected to the first moving block. The top of the push plate is fixedly connected to a mounting plate, a second motor is fixedly connected to one side of the mounting plate, a second lead screw is fixedly connected to the output end of the second motor, a second horizontal moving groove is opened at the bottom of the mounting plate, the second lead screw passes through the second moving groove, a second moving block is threaded on the second lead screw, an electric push rod is fixedly connected to the bottom of the second moving block, and a pressure plate is fixedly connected to the output end of the electric push rod. A cutting mounting frame is fixedly connected to the top of the work area fence, a hydraulic pump is fixedly connected to the bottom of the cutting mounting frame, and a cutting blade is fixedly connected to the output end of the hydraulic pump.

[0006] Preferably, side rails are fixedly connected to both sides of the workbench, and the side rails are fixedly connected to the work area fence.

[0007] Preferably, a positioning groove is provided at the bottom of one side of the work area fence.

[0008] Preferably, a placement board is provided on the workbench, and a placement side plate is fixedly connected to the side of the placement board away from the work area fence.

[0009] Preferably, a rotating seat is rotatably connected to the placement plate.

[0010] Preferably, a magnetic positioning seat is fixedly connected to the bottom of the push board, and magnetic strips adapted to the magnetic positioning seat are fixedly connected to the front and rear ends of the placement board.

[0011] The first motor and the second motor are servo motors, and the first lead screw and the second lead screw are driven independently.

[0012] Preferably, the placement plate slides in contact with the workbench surface, and the thickness of the placement plate is adapted to the depth of the positioning groove.

[0013] Preferably, an anti-wear pad is fixedly connected to the work area fence on the same side as the positioning groove.

[0014] Preferably, a locator is fixedly connected to one side of the clamping plate, and a receiver adapted to the locator is fixedly connected to the top of the placement side plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This paper cutter uses a positioning and clamping device. The angle of the paper stack can be flexibly adjusted by the rotating seat on the placement plate, which solves the problems of traditional equipment not being able to easily adjust the direction and the difficulty in aligning the paper stack in the early stage. With the side plate and anti-wear pad forming a lateral clamping structure, it can organize and fix the paper stack, preventing the paper stack from being loose and crooked. At the same time, it adds a magnetic positioning seat, magnetic strip, and a double alignment structure of positioner and receiver. Combined with the precision transmission mechanism composed of motor and lead screw, it completes the feeding. The multiple positioning methods work together to significantly improve the positioning accuracy of the paper stack, effectively reduce the cutting size deviation, and reduce the production of defective products.

[0016] 2. This paper cutter uses a positioning and clamping device with a laterally adjustable clamping mechanism. This allows for flexible adjustment of the clamping plate position according to the actual width of the paper stack, adapting to the clamping requirements of different paper specifications. An electric push rod drives the clamping plate to reliably compact the paper stack, effectively preventing slippage and edge curling during cutting. The device integrates feeding and orientation adjustment, positioning and pushing, top clamping, and hydraulic cutting functions into one unit. All mechanisms operate smoothly and with good stability. Flexible components such as anti-abrasion pads prevent scratches on the paper edges, simplifying the operation process while ensuring cutting quality and significantly improving overall work efficiency. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is an isometric schematic diagram of a positioning and clamping device for a paper cutter according to the present invention; Figure 2 This is a top view schematic diagram of a positioning and clamping device for a paper cutter according to the present invention; Figure 3 This is a left-side sectional view of a positioning and clamping device for a paper cutter according to the present invention; Figure 4 This is a right-side sectional view of a positioning and clamping device for a paper cutter according to the present invention; Figure 5 This is a front-view sectional view of a positioning and clamping device for a paper cutter according to the present invention; Figure 6 This is a front view schematic diagram of a positioning and clamping device for a paper cutter according to the present invention; Figure 7 This is a left-side view of a positioning and clamping device for a paper cutter according to the present invention; Figure 8 This is a right-side view of a positioning and clamping device for a paper cutter according to the present invention.

[0018] Reference numerals: 1. Workbench; 2. Work area fence; 3. Side panel; 4. First motor; 5. First moving slot; 6. First lead screw; 7. First moving block; 8. Push plate; 9. Mounting top plate; 10. Electric push rod; 11. Pressure plate; 12. Positioning slot; 13. Placement plate; 14. Placement side plate; 15. Rotating seat; 16. Anti-wear pad; 17. Positioner; 18. Hydraulic pump; 19. Cutting blade; 20. Magnetic positioning seat; 21. Magnetic strip; 22. Cutting mounting frame; 23. Second motor; 24. Second moving slot; 25. Second lead screw; 26. Second moving block. Detailed Implementation

[0019] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0021] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] Please see Figure 1-8 The present invention provides a technical solution: a positioning and clamping device for a paper cutter, including a worktable 1, a work area fence 2 fixedly connected to the worktable 1, side guards 3 fixedly connected to both sides of the worktable 1, the side guards 3 being fixedly connected to the work area fence 2; a first motor 4 fixedly connected to the rear end of the worktable 1, a first lead screw 6 fixedly connected to the output end of the first motor 4, a longitudinal first moving groove 5 opened on the worktable 1, the first lead screw 6 passing through the first moving groove 5, a first moving block 7 threadedly connected to the first lead screw 6, a pusher plate 8 fixedly connected to the first moving block 7, the pusher plate 8 being used to push out the placed paper stack and control the cutting position; A mounting plate 9 is fixedly connected to the top of the pusher plate 8. The mounting plate 9 can move with the pusher plate 8. A second motor 23 is fixedly connected to one side of the mounting plate 9. A second lead screw 25 is fixedly connected to the output end of the second motor 23. A horizontal second moving groove 24 is opened at the bottom of the mounting plate 9. The second lead screw 25 passes through the second moving groove 24. A second moving block 26 is threaded on the second lead screw 25. An electric push rod 10 is fixedly connected to the bottom of the second moving block 26. A pressure plate 11 is fixedly connected to the output end of the electric push rod 10. The pressure plate 11 is used to press the paper stack. A positioning groove 12 is provided at the bottom of one side of the work area fence 2. An anti-wear pad 16 is fixedly connected to the same side of the work area fence 2. A placement plate 13 is provided on the workbench 1. A placement side plate 14 is fixedly connected to the side of the placement plate 13 away from the work area fence 2. A rotating seat 15 is rotatably connected to the placement plate 13. When the paper stack is placed on the rotating seat 15 of the placement plate 13, the direction can be adjusted by rotating. The placement side plate 14 is pushed to send the placement plate 13 into the positioning groove 12. At this time, the placement side plate 14 and the anti-wear pad 16 squeeze the paper stack to fix it and keep it neat. A positioner 17 is fixedly connected to one side of the pressing plate 11, and a corresponding receiver is fixedly connected to the top of the placement side plate 14; a magnetic positioning seat 20 is fixedly connected to the bottom of the push plate 8, and magnetic strips 21 are fixedly connected to the front and rear ends of the placement plate 13. When the placement plate 13 is pushed close to the push plate 8, the magnetic positioning seat 20 and the magnetic strips 21 automatically attract each other. A cutting mounting bracket 22 is fixedly connected to the top of the work area fence 2, a hydraulic pump 18 is fixedly connected to the bottom of the cutting mounting bracket 22, and a cutting blade 19 is fixedly connected to the output end of the hydraulic pump 18.

[0024] Working principle: When not in operation, the pusher plate 8 is in the initial position of the first longitudinal moving groove 5 of the worktable 1, the mounting top plate 9 is synchronously at the rear end with the pusher plate 8, the clamping plate 11 is in the initial position of the second transverse moving groove 24 below the mounting top plate 9, the electric push rod 10 is in the retracted state, the cutting blade 19 is reset below the cutting mounting frame 22, the hydraulic pump 18 is not started, the placement plate 13 is located outside the worktable 1 and is not pushed into the positioning groove 12 of the work area fence 2, the side guard plate 3 cooperates with the work area fence 2 to form a limit on the working area and prevent the paper stack from deviating from the worktable 1; Place the paper stack to be cut on the rotating seat 15 of the placement plate 13. Utilize the rotatable characteristics of the rotating seat 15 to adjust the placement direction of the paper stack and ensure that the edges of the paper stack are aligned. At this time, the placement side plate 14 is attached to one side of the paper stack, which plays a preliminary limiting role. Then push the placement side plate 14 to push the placement plate 13 carrying the paper stack into the positioning groove 12 of the work area fence 2 along the worktable 1. After it is fully pushed in, the placement side plate 14 and the anti-wear pad 16 on the work area fence 2 squeeze the paper stack from both sides, which not only fixes the position of the paper stack, but also prevents the edges of the paper stack from being scratched by the anti-wear pad 16, while ensuring that the paper stack is neat and preventing it from becoming loose. Continue to push the placement plate 13 closer to the push plate 8. When the magnetic strips 21 at the front and rear ends of the placement plate 13 come into contact with the magnetic positioning seat 20 at the bottom of the push plate 8, the two automatically attract each other, achieving the initial positioning and alignment of the placement plate 13 and the push plate 8. The first motor 4 at the rear end of the workbench 1 starts, driving the first lead screw 6 at the output end to rotate in the longitudinal first moving groove 5. Since the first lead screw 6 is threadedly connected to the first moving block 7, the rotational motion is converted into linear motion, driving the first moving block 7 and the pusher plate 8 fixed on it to move forward along the longitudinal first moving groove 5. The pusher plate 8 pushes the paper stack to move synchronously until the paper stack is pushed to the preset cutting position, completing the size positioning before cutting. After the paper stack reaches the cutting position, the second motor 23 on the side of the mounting plate 9 starts, driving the corresponding second lead screw 25 to rotate in the transverse second moving groove 24, driving the threaded second moving block 26 and the electric push rod 10 to move laterally, adjusting the transverse position of the pressing plate 11 so that it is aligned with the area of ​​the paper stack that needs to be pressed. The locator 17 on the side of the pressing plate 11 forms a signal docking with the corresponding receiver on the top of the side plate 14 to accurately detect the position of the paper stack. After the position adjustment is completed, the electric push rod 10 starts and extends downward, pushing the pressing plate 11 to press the top of the paper stack. The pressing plate 11 is in close contact with the paper stack, effectively preventing the paper stack from slipping or warping due to force during the cutting process. After the paper stack is pressed and fixed, the hydraulic pump 18 at the bottom of the cutting mounting frame 22 starts, outputting power to drive the cutting blade 19 to move downward. The cutting blade 19 quickly and smoothly cuts the pressed paper stack, completing the cutting operation.

[0025] Structural Description: Workbench 1: As the basic load-bearing component of the whole set of equipment, it is used to install and fix all components such as the work area fence 2, side rails 3, first motor 4, etc. It can provide a unified and stable installation benchmark for each mechanism, ensure the relative position accuracy of the components, and prevent the overall structure from loosening or shifting during equipment operation, providing a stable working platform for paper stack positioning, pushing, and cutting. Work area fence 2: It is fixedly connected to the workbench 1 and together with the side guardrail 3, it defines the work area. A positioning groove 12 is opened at the bottom of one side, and an anti-wear pad 16 is fixed on the same side. A cutting mounting bracket 22 is fixed at the top. It can prevent the paper stack from shifting out of the workbench 1 during operation through the fence structure, and it can also integrate positioning, protection and cutting mechanism installation functions, making the overall layout compact and the functional areas clear. Side railing 3: It is fixedly connected to both sides of the workbench 1 and to the work area fence 2, forming an enclosed limiting structure with the work area fence 2, further limiting the lateral movement range of the paper stack, preventing the paper stack from shifting to the sides when being pushed or cut, and enhancing the installation stability of the work area fence 2. The first motor 4 and the second motor 23 are divided into two groups. One group is fixed at the rear end of the workbench 1 and drives the longitudinal second lead screw 25. The other group is fixed on one side of the mounting top plate 9 and drives the transverse first lead screw 6. The independent dual-motor drive design controls the longitudinal pushing of the paper stack and the transverse adjustment of the pressing plate 11 respectively. The power output does not interfere with each other. The start-stop and speed adjustment response is sensitive, which can realize precise displacement control and adapt to high-precision cutting requirements. The first moving groove 5 and the second moving groove 24 are respectively longitudinal and transverse. The longitudinal first moving groove 5 is opened on the worktable 1, and the transverse second moving groove 24 is opened at the bottom of the mounting top plate 9. They are used to accommodate the lead screw and provide moving guide for the moving block, strictly limiting the movement trajectory of the moving block, preventing it from deviating or jamming during movement, and ensuring the smoothness and accuracy of the longitudinal pushing and transverse adjustment actions. First lead screw 6 and second lead screw 25: The two sets of lead screws are respectively installed in the first moving groove 5 and the second moving groove 24 in the longitudinal and transverse directions. One end is fixedly connected to the output end of the first motor 4 and the second motor 23, and the other end is rotatably engaged with the corresponding structure and threadedly connected to the first moving block 7 and the second moving block 26. The rotational motion of the motor can be accurately converted into linear motion. The lead screw transmission has the characteristics of high precision, smooth operation and strong load capacity. It can accurately control the pushing stroke of the push plate 8 and the transverse adjustment position of the pressure plate 11. The first moving block 7 and the second moving block 26 are respectively threaded onto two sets of lead screws. One set is fixed to the push plate 8, and the other set is fixed to the electric push rod 10. As an intermediate body for power transmission, the linear driving force of the lead screw can be smoothly transmitted to the push plate 8 or the electric push rod 10. At the same time, it cooperates with the moving groove and the lead screw to achieve precise displacement and ensure the consistency of the mechanism's action. Pushing plate 8: It is fixedly connected to the first longitudinal moving block 7, with a magnetic positioning seat 20 fixed at the bottom and a top plate 9 fixedly installed at the top. It is used to push paper stacks. It can directly stick to the paper stacks and push them. The pushing force is uniform, which can ensure the stability of the paper stacks during longitudinal movement. At the same time, it integrates the installation functions of magnetic positioning and pressing mechanism to realize the linkage of pushing, positioning and pressing. Mounting top plate 9: It is fixedly connected to the top of the push plate 8 and can move synchronously with the push plate 8. A second motor 23 is fixed on one side and a second horizontal moving groove 24 is opened at the bottom. It makes full use of the top space of the push plate 8 and integrates a horizontal drive mechanism, so that the pressing plate 11 can move synchronously with the push plate 8 while realizing its own horizontal position adjustment. The structure is compact and has strong linkage, and there is no need to set up an additional independent moving frame. Electric push rod 10: It is fixedly connected to the bottom of the second horizontal moving block 26, and the output end is fixed with the pressure plate 11. It is small in size, has a fast action response, and controllable thrust. It can quickly drive the pressure plate 11 to lift and lower to press or loosen the paper stack without manual operation. It is compatible with automated operation processes and can flexibly adjust the pressing stroke according to the thickness of the paper stack. Pressure plate 11: Fixedly connected to the output end of electric push rod 10, with a fixed positioner 17 on one side, used to press the top of the paper stack. It can form a vertical pressing force on the paper stack from the top, effectively preventing the paper stack from slipping or curling due to force during the cutting process. With the lateral adjustment function, it can adapt to the pressing requirements of paper stacks of different widths, and the pressing range is flexible. Positioning slot 12: It is located at the bottom of one side of the work area fence 2 and is used to accommodate the pushed-in placement plate 13. It can precisely limit the pushing position of the placement plate 13, ensuring that the paper stack is in a uniform initial position after each push, providing a benchmark for subsequent pushing and positioning, and improving the consistency of cutting size. Placement plate 13: Set on the workbench 1, it can slide along the workbench 1. The side plate 14 is fixedly placed on the side away from the work area fence 2. The top is rotatably connected to the rotating seat 15. Magnetic strips 21 are fixed at the front and rear ends. It serves as a carrier and conveyor for paper stacks. It makes it convenient for operators to load materials on the outside of the workbench 1 and then push them into the work area, reducing the difficulty of loading materials. At the same time, it integrates the functions of adjustment, positioning and magnetic attraction, which can meet the needs of paper stack pre-sorting and subsequent positioning. Side plate 14: It is fixedly connected to the side of the placement plate 13 away from the work area fence 2, and the top is fixed with a receiver adapted to the locator 17. On the one hand, it can play a preliminary limiting role when the paper stack is placed. On the other hand, after the placement plate 13 is pushed into the positioning groove 12, it can cooperate with the anti-wear pad 16 to squeeze the paper stack from both sides to keep the paper stack neat. At the same time, it can achieve accurate detection of the paper stack position by signal docking with the locator 17 through the top receiver. Rotating seat 15: Rotatably connected to the placement plate 13, used to support the paper stack. It has a rotatable characteristic, and the operator can directly adjust the placement direction of the paper stack on the placement plate 13. The edge alignment can be achieved without repeatedly moving the paper stack, making the operation convenient and efficient and reducing the initial sorting time. Anti-wear pad 16: It is fixedly connected to one side of the work area fence 2 and is set opposite to the placement side plate 14. It is made of soft material. When it is pressed with the placement side plate 14, it can prevent the edge of the paper stack from being scratched by hard contact. At the same time, it enhances the friction with the paper stack, improves the fixing effect of the paper stack, and prevents the paper stack from loosening. Positioner 17: Fixedly connected to one side of the pressing plate 11, and connected to the receiver signal on the top of the side plate 14, it can accurately detect the actual position of the paper stack, provide positioning basis for the lateral adjustment of the pressing plate 11, ensure that the pressing plate 11 can accurately align with the area of ​​the paper stack that needs to be pressed, and at the same time assist in verifying the positioning accuracy of the paper stack and reduce the cutting size deviation. Hydraulic pump 18: It is fixedly connected to the bottom of the cutting mounting frame 22, and the output end is fixed to the cutting blade 19. As the power source of the cutting blade 19, the hydraulic drive has the characteristics of high pressure and stable operation. It can drive the cutting blade 19 to cut the paper stack quickly and evenly, ensuring neat cutting edges and adapting to the batch cutting needs of the whole stack of paper. Cutting blade 19: Fixedly connected to the output end of hydraulic pump 18, used for cutting paper stacks. Made of alloy material, the blade is sharp and can efficiently cut paper stacks. During the cutting process, it is stably driven by hydraulic pump 18, which makes it less likely to jam or cut incompletely, thus improving cutting quality and efficiency. Magnetic positioning seat 20: It is fixedly connected to the bottom of the pusher plate 8 and is compatible with the magnetic strip 21 on the placement plate 13. It can realize the quick adsorption and positioning of the placement plate 13 and the pusher plate 8, assist the two to be accurately aligned, avoid relative displacement between the paper stack and the pusher plate 8 during the pushing process, improve the pushing positioning accuracy, and simplify the positioning operation. Magnetic strip 21: It is fixedly connected to the front and rear ends of the placement plate 13 and is attracted to the magnetic positioning seat 20. It achieves quick alignment through magnetic attraction, eliminating the need for precise manual alignment and reducing the difficulty of operation. At the same time, it can form a preliminary fixation after attraction to prevent the paper stack from shifting in the initial stage of pushing. Cutting mounting bracket 22: Fixedly connected to the top of the work area fence 2, used to install the hydraulic pump 18 and the cutting blade 19, providing a stable mounting carrier for the cutting mechanism, ensuring the installation height and verticality of the cutting blade 19, ensuring accurate cutting trajectory, and at the same time making the layout of the cutting mechanism, positioning and clamping mechanism reasonable, without interfering with the operation of each mechanism.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A positioning and clamping device for a paper cutter, comprising a worktable (1), characterized in that: The workbench (1) is fixedly connected to a work area fence (2); The workbench (1) is fixedly connected to the rear end of a first motor (4), and the output end of the first motor (4) is fixedly connected to a first lead screw (6). The workbench (1) is provided with a longitudinal first moving groove (5), the first lead screw (6) passes through the first moving groove (5), the first lead screw (6) is threadedly connected to a first moving block (7), and the first moving block (7) is fixedly connected to a pusher plate (8). The push plate (8) is fixedly connected to the top of the mounting plate (9), and a second motor (23) is fixedly connected to one side of the mounting plate (9). A second lead screw (25) is fixedly connected to the output end of the second motor (23). A second horizontal moving groove (24) is opened at the bottom of the mounting plate (9). The second lead screw (25) passes through the second moving groove (24). A second moving block (26) is threaded on the second lead screw (25). An electric push rod (10) is fixedly connected to the bottom of the second moving block (26). A pressure plate (11) is fixedly connected to the output end of the electric push rod (10). The top of the work area fence (2) is fixedly connected to a cutting mounting frame (22), the bottom of the cutting mounting frame (22) is fixedly connected to a hydraulic pump (18), and the output end of the hydraulic pump (18) is fixedly connected to a cutting blade (19).

2. The positioning and clamping device for a paper cutter according to claim 1, characterized in that: The workbench (1) is fixedly connected to two sides with side rails (3), and the side rails (3) are fixedly connected to the work area fence (2).

3. The positioning and clamping device for a paper cutter according to claim 2, characterized in that: A positioning groove (12) is provided at the bottom of one side of the work area fence (2).

4. The positioning and clamping device for a paper cutter according to claim 3, characterized in that: The workbench (1) is provided with a placement plate (13), and a placement side plate (14) is fixedly connected to the side of the placement plate (13) away from the work area fence (2).

5. A positioning and clamping device for a paper cutter according to claim 4, characterized in that: A rotating seat (15) is rotatably connected to the placement plate (13).

6. A positioning and clamping device for a paper cutter according to claim 5, characterized in that: The bottom of the push board (8) is fixedly connected to a magnetic positioning seat (20), and the front and rear ends of the placement board (13) are fixedly connected to magnetic strips (21) that are compatible with the magnetic positioning seat (20).

7. A positioning and clamping device for a paper cutter according to claim 6, characterized in that: The first motor (4) and the second motor (23) are servo motors, and the first lead screw (6) and the second lead screw (25) are driven independently.

8. A positioning and clamping device for a paper cutter according to claim 7, characterized in that: The placement plate (13) slides with the surface of the workbench (1), and the thickness of the placement plate (13) is adapted to the depth of the positioning groove (12).

9. A positioning and clamping device for a paper cutter according to claim 8, characterized in that: A wear-resistant pad (16) is fixedly connected to the work area fence (2) on the same side as the positioning groove (12).

10. A positioning and clamping device for a paper cutter according to claim 9, characterized in that: A locator (17) is fixedly connected to one side of the clamping plate (11), and a receiver adapted to the locator (17) is fixedly connected to the top of the placement side plate (14).

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