Single-knife digital three-side cutting paper cutting machine

Abstract

The application discloses a single-knife digital three-side cutting paper cutting machine and belongs to the technical field of paper cutting machines. The paper cutting machine comprises a rack, a first conveying belt, a second conveying belt, a clamping assembly and a cutting assembly. The cutting assembly, the first conveying belt and the second conveying belt are arranged in the same direction and in a three-side half-enclosed layout, and a horizontal moving channel is formed in the middle. The clamping assembly is arranged in the horizontal moving channel and comprises a material taking sliding rail, a material taking screw rod, a sliding seat, a rotating mechanism and a material taking mechanism. The material taking mechanism can move along the horizontal moving channel and clamp materials. The rotating mechanism drives the material taking mechanism to rotate the materials by 90 degrees. The cutting assembly is used for sequentially completing three-edge cutting. The application solves the problems of poor positioning precision, low efficiency of manual rotation of the existing single-knife paper cutting machine, high cost and poor adaptability of traditional three-side cutting knives, realizes sequential cutting of books in a three-edge full-automatic, high-precision and high-quality mode, and has compact structure and is suitable for multi-variety batch production.

Description

Technical Field

[0001] This invention belongs to the field of paper cutting machine technology, specifically relating to a single-blade digital three-sided paper cutting machine. Background Technology

[0002] Currently, in the printing and packaging industry, especially for cutting three sides of bound materials such as books and brochures, the commonly used equipment mainly includes traditional three-sided paper cutters and single-blade paper cutters. Traditional three-sided paper cutters are typically equipped with three cutters arranged at right angles, capable of cutting all three sides of the book in one go or sequentially. They have a high degree of automation and are suitable for mass production of products of the same specifications. Single-blade paper cutters, on the other hand, are widely used in small-batch production or laboratory prototyping due to their relatively simple structure and lower cost. In existing single-blade paper cutter operations, the book is usually placed on the worktable manually or with simple auxiliary clamps. The positioning points are aligned visually or with a simple ruler, and then the book is manually pushed or fed under the cutter using a clamping mechanism. After each side is cut, the operator needs to manually remove the book, rotate it 90°, and reposition it before cutting the next side, repeating this process until all three sides are cut.

[0003] However, the aforementioned existing technologies have significant technical problems in application. First, traditional three-sided paper cutters, due to their three-blade structure, result in a large overall size, high manufacturing costs, and complex and time-consuming blade spacing adjustments, making them difficult to flexibly adapt to the production needs of multiple varieties and small batches. Second, existing single-blade paper cutters heavily rely on manual handling for intermediate processes such as picking up, rotating, and repositioning when cutting the three sides of books. This not only leads to low production efficiency but also easily introduces cumulative positioning errors due to repeated manual alignment, severely affecting cutting accuracy and causing the three sides of the book to be non-perpendicular or inconsistent in size. In addition, the cutting blades of existing paper cutters mostly use a single vertical downward cutting motion. When cutting thicker books or books with strong fiber toughness, the purely vertical cutting resistance is high, easily leading to rough cut surfaces, fuzzy paper edges, and even quality defects such as off-cutting and tearing. Therefore, there is an urgent need for a single-blade three-sided cutting solution that can achieve high precision, high efficiency, and a compact structure. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a single-blade digital three-sided paper cutting machine.

[0005] The objective of this invention can be achieved through the following technical solutions: A single-blade digital three-sided paper cutting machine includes a frame, a first conveyor belt, a second conveyor belt, a clamping assembly, and a cutting assembly. The cutting assembly, the first conveyor belt, and the second conveyor belt are arranged in the same direction on the frame. The first conveyor belt, the cutting assembly, and the second conveyor belt are arranged in a three-sided semi-enclosed manner, forming a transverse channel at the center. The clamping assembly is disposed in the transverse channel and includes a material picking slide rail, a material picking screw, a slide block, a rotating mechanism, and a material picking mechanism. The material picking slide rail is arranged on the frame along the working area direction of the first conveyor belt, the cutting assembly, and the second conveyor belt. The material-picking screw is mounted on the frame and parallel to the material-picking slide rail. A screw motor is mounted on the frame and connected to the material-picking screw. The slide is sleeved on the material-picking screw and slidably connected to the material-picking slide rail. The rotating mechanism and the material-picking mechanism are arranged sequentially on the slide from bottom to top. The rotating mechanism drives the material-picking mechanism to alternately perform cutting and rotating the material 90° in the working area of ​​the cutting component for cutting the three sides of the material. The material-picking mechanism is used to clamp the material and transfer it sequentially along the working areas of the first conveyor belt, the cutting component, and the second conveyor belt. As a further embodiment of the present invention, the rotating mechanism includes a rotary motor and a turntable, the rotary motor and the turntable being connected in a transmission relationship, and the material handling mechanism being disposed on the turntable.

[0006] As a further embodiment of the present invention, the material picking mechanism includes a clamping base plate and a material picking bracket. The material picking bracket is disposed on the clamping base plate and a first cylinder is disposed on the material picking bracket. The telescopic end of the first cylinder is provided with a clamping top plate and is disposed in the direction of the clamping base plate. The clamping base plate is flush with the working surfaces of the first conveyor belt, the cutting component and the second conveyor belt.

[0007] As a further aspect of the present invention, it also includes an alignment component, which includes an alignment bracket and an alignment motor. The alignment bracket spans both sides of the first conveyor belt. An alignment slide rail is provided on the crossbeam of the alignment bracket. Two sets of alignment slide plates are slidably arranged on the alignment slide rail. The alignment motor is mounted on the alignment bracket. Two pulleys are respectively provided at both ends of the crossbeam of the alignment bracket and an alignment belt is fitted on them. The alignment motor is drivenly connected to the pulleys. The two sets of alignment slide plates are respectively clamped to the inner and outer belts of the alignment belt, so that the two sets of alignment slide plates expand or contract synchronously with the rotation of the transmission belt to adjust the alignment of the material in the alignment working area.

[0008] As a further embodiment of the present invention, the centering assembly further includes a centering cylinder, which is disposed on the centering bracket with its telescopic end facing the centering working area. The centering cylinder is used to pre-clamp the material in the centering working area after the centering slide plate centers the material.

[0009] As a further embodiment of the present invention, a front-end cylinder is also included. The front-end cylinder is disposed on the frame opposite the centering working area of ​​the first conveyor belt. The telescopic end of the front-end cylinder is horizontally disposed facing the centering working area. The telescopic end of the front-end cylinder is provided with a front-end support for contacting and limiting the material.

[0010] As a further embodiment of the present invention, it also includes a rear-end motor and a rear-end slider. The frame is provided with a rear-end slide rail along the moving direction of the first conveyor belt. The rear-end slider is slidably disposed on the rear-end slide rail. The front and rear ends of the rear-end slide rail are respectively provided with pulleys and fitted with a rear-end belt. The rear-end motor is disposed on the rear-end slide rail and is drivenly connected to the pulleys. The rear-end slider is clamped on the rear-end belt and moves back and forth with the rotation of the rear-end belt to push the material to abut and limit its contact with the front-end support.

[0011] As a further embodiment of the present invention, the first conveyor belt has two sets arranged in parallel, forming a pushing channel between the two sets of the first conveyor belt. The rear motor, the rear slider, and the rear slide rail are all located below the first conveyor belt. The rear slider is equipped with a rear cylinder, and the telescopic end of the rear cylinder is equipped with a rear support. The telescopic action of the rear cylinder is used to drive the rear support to extend or retract from the pushing channel. The frame is equipped with a sensor facing the first conveyor belt. The sensor is used to detect the material position. The rear motor and the rear cylinder drive the rear support to extend from the pushing channel and push the material or retract based on the sensor data.

[0012] As a further embodiment of the present invention, the cutting assembly includes a pressure plate, a cutter, a vertical cylinder, a vertical slide rail, a force measuring mechanism, a vertical lead screw, and a vertical motor. Two sets of the vertical cylinder, vertical slide rail, and vertical lead screw are each vertically mounted on the frame. The pressure plate is slidably mounted on the vertical slide rail. Each end of the vertical lead screw is equipped with a pulley, and the two sets of pulleys are fitted with lead screw belts. The vertical motor is mounted on the frame and connected to the pulleys for transmission. Threaded holes are opened on both sides of the pressure plate and fitted onto the vertical lead screw. The cutter is mounted on the telescopic end of the vertical cylinder. The force measuring mechanism is mounted on the frame and connected to the cutter for detecting the cutting force of the cutter.

[0013] As a further aspect of the present invention, a control module is also included, which is electrically connected to the first conveyor belt, the second conveyor belt, the clamping component, the cutting component, and the centering component.

[0014] The beneficial effects of this invention are as follows: 1. The clamping component automatically completes the material picking, translation, rotation and unloading. With the centering component and the rear push component, the whole process from feeding, centering, positioning, three-sided cutting to discharge is fully automated, eliminating the need for manual picking and rotation in the middle, which greatly improves the cutting efficiency.

[0015] 2. The device employs a centering slide plate for synchronous centering, and a front-end cylinder and a rear-end motor for longitudinal positioning, ensuring that the material is in a precise reference position before each cut. The clamping assembly achieves a precise 90° rotation via a rotary motor and turntable, avoiding the cumulative errors caused by multiple manual alignments. This ensures consistent cutting dimensions and good perpendicularity on all three sides. The device uses a single-blade combined with a moving and rotating clamping mechanism instead of the traditional three-blade structure, resulting in a smaller device size and lower manufacturing cost.

[0016] 3. The cutting assembly uses a pressure plate to first press the material, and the cutter can move horizontally while cutting vertically downwards, forming a sliding cutting effect. This significantly reduces cutting resistance and avoids defects such as fuzzing, tearing, and off-center cutting on thick books or high-toughness paper, resulting in a smooth and flat cutting edge. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the front structure of the hidden part of the frame of the present invention.

[0020] Figure 3 This is a schematic diagram of the rear structure of the hidden part of the frame of the present invention.

[0021] Figure 4 This is a schematic diagram of the front structure of the clamping assembly of the present invention.

[0022] Figure 5 This is a schematic diagram of the rear structure of the clamping assembly of the present invention.

[0023] Figure 6 This is a schematic diagram of the front structure of the first conveyor belt and centering component of the present invention.

[0024] Figure 7 This is a schematic diagram of the rear structure of the first conveyor belt and the centering component of the present invention.

[0025] Figure 8This is a schematic diagram of the cutting component of the present invention.

[0026] In the diagram: 1. Frame; 2. First conveyor belt; 3. Second conveyor belt; 4. Clamping assembly; 41. Lead screw motor; 42. Material picking slide rail; 43. Slide seat; 44. Rotary motor; 45. Turntable; 46. Clamping base plate; 47. First cylinder; 48. Clamping top plate; 49. Material picking bracket; 410. Material picking lead screw; 5. Cutting assembly; 51. Pressure plate; 52. Vertical lead screw; 53. Vertical motor; 54. Cutter; 55. Vertical slide rail; 56. Force measuring mechanism; 6. Centering assembly; 61. Centering bracket; 62. Centering motor; 63. Centering slide plate; 64. Centering slide rail; 65. Centering cylinder; 7. Front support platform; 81. Rear motor; 82. Rear cylinder; 83. Rear support platform. Detailed Implementation

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

[0028] like Figures 1-8 As shown, a single-blade digital three-sided paper cutting machine of the present invention includes a frame 1, a first conveyor belt 2, a second conveyor belt 3, a clamping assembly 4, and a cutting assembly 5. The cutting assembly 5, the first conveyor belt 2, and the second conveyor belt 3 are arranged in the same direction on the frame 1. The first conveyor belt 2, the cutting assembly 5, and the second conveyor belt 3 are arranged in a three-sided semi-enclosed manner and form a transverse channel at the center. The clamping assembly 4 is disposed in the transverse channel. The clamping assembly 4 includes a material picking slide rail 42, a material picking screw 410, a slide block 43, a rotating mechanism, and a material picking mechanism. The material picking slide rail 42 is arranged along the working area direction of the first conveyor belt 2, the cutting assembly 5, and the second conveyor belt 3. On the frame 1, the material taking lead screw 410 is disposed on the frame 1 and parallel to the material taking slide rail 42. A lead screw motor 41 is disposed on the frame 1 and connected to the material taking lead screw 410. The slide block 43 is sleeved on the material taking lead screw 410 and slidably connected to the material taking slide rail 42. The rotating mechanism and the material taking mechanism are disposed sequentially on the slide block 43 from bottom to top. The rotating mechanism drives the material taking mechanism to alternately perform cutting and rotating the material 90° in the working area of ​​the cutting component 5 for cutting the three sides of the material. The material taking mechanism is used to clamp the material and transfer it sequentially along the working areas of the first conveyor belt 2, the cutting component 5 and the second conveyor belt 3. The material is conveyed to the starting end of the transverse channel via the first conveyor belt 2. The gripping component 4 moves along the material picking slide rail 42 to the picking position. After the picking mechanism presses down to grip the material, it moves along the channel to directly below the cutting component 5. After the cutting component 5 completes the single-sided cutting, the gripping component 4 temporarily retracts, and the rotating mechanism drives the picking mechanism and the material to rotate precisely 90°. It then moves back to the cutting position to cut the next side. After all three sides are cut, the material is conveyed out by the second conveyor belt 3. A single cutting blade 54, combined with a multi-axis linkage trajectory, replaces the traditional fixed three-blade layout. The single-blade integrated design breaks the structural barrier of the traditional three-sided paper cutter with multi-blade linkage, significantly reducing the equipment size and manufacturing cost. The fully automated "gripping-translation-cutting-rotation-retranslation" flow completely replaces manual flipping and changing, eliminating human operation errors and cycle time losses. The semi-enclosed channel layout minimizes the material flow path, improving the utilization rate of production line space and continuous operation efficiency.

[0029] As a further embodiment of the present invention, the rotating mechanism includes a rotary motor 44 and a turntable 45, the rotary motor 44 and the turntable 45 are connected in a transmission manner, and the material handling mechanism is disposed on the turntable 45.

[0030] After receiving a control signal, the rotary motor 44 outputs precise angle pulses, which drive the turntable 45 to rotate 90° via a reducer or directly. This causes the material-grabbing mechanism and the material clamping mechanism fixed on the turntable 45 to rotate synchronously. Once the turntable 45 has rotated to its designated position, it is held in place by a self-locking motor or a brake. This transmission structure of the rotary motor 44 and the turntable 45 enables precise and rapid rotation of the material angle. The rotation angle is precisely controlled, and the response speed is fast, ensuring consistent positioning after each rotation. This improves the perpendicularity and dimensional accuracy of the three-sided cutting.

[0031] As a further embodiment of the present invention, the material picking mechanism includes a clamping base plate 46 and a material picking bracket 49. The material picking bracket 49 is disposed on the clamping base plate 46, and a first cylinder 47 is disposed on the material picking bracket 49. The telescopic end of the first cylinder 47 is provided with a clamping top plate 48 and is disposed in the direction of the clamping base plate 46. The clamping base plate 46 is flush with the working surfaces of the first conveyor belt 2, the cutting component 5 and the second conveyor belt 3.

[0032] During material handling, the slide block 43 moves the material handling mechanism below the material, positioning it between the clamping base plate 46 and the clamping top plate 48. The first cylinder 47 then activates, driving the clamping top plate 48 downwards to securely hold the material between them. The cooperation between the clamping base plate 46 and the cylinder-driven clamping top plate 48 ensures stable material holding with a uniform and adjustable clamping force, preventing damage to the book surface. Furthermore, the flush design of the clamping base plate 46 with the working surfaces of each conveyor belt eliminates the need for materials to cross height differences during transfer between the conveyor belt and the material handling mechanism, ensuring a smooth transition and effectively preventing material displacement or falling.

[0033] As a further embodiment of the present invention, it also includes an alignment component 6, which includes an alignment bracket 61 and an alignment motor 62. The alignment bracket 61 spans both sides of the first conveyor belt 2. An alignment slide rail 64 is provided on the crossbeam of the alignment bracket 61. Two sets of alignment slide plates 63 are slidably arranged on the alignment slide rail 64. The alignment motor 62 is mounted on the alignment bracket 61. Two pulleys are respectively provided at both ends of the crossbeam of the alignment bracket 61 and an alignment belt is fitted on them. The alignment motor 62 is connected to the pulleys for transmission. The two sets of alignment slide plates 63 are respectively clamped to the inner and outer belts of the alignment belt, so that the two sets of alignment slide plates 63 expand or contract synchronously with the rotation of the transmission belt to adjust the alignment of the material in the alignment working area.

[0034] After the centering motor 62 starts, the centering belt circulates. Since the two sliding plates are anchored to the upper and lower (inner and outer) straight sections of the belt, the belt's unidirectional rotation inevitably produces linear displacements in opposite directions. This allows the two sets of sliding plates to synchronously move towards the center or separate outwards, automatically pushing the offset book to the geometric center line of the channel. Utilizing the characteristics of belt drive, purely mechanical synchronous centering motion is achieved, eliminating the need for dual-motor synchronous control or complex sensor feedback. The structure is simplified and the cost is extremely low. The centering process is smooth and impact-free, effectively eliminating initial material misalignment and laying a benchmark for subsequent precise positioning.

[0035] As a further embodiment of the present invention, the centering component 6 further includes a centering cylinder 65, which is disposed on the centering bracket 61 with its telescopic end facing the centering working area. The centering cylinder 65 is used to pre-clamp the material in the centering working area after the centering slide plate 63 centers the material.

[0036] After the centering slide plate 63 completes the centering action, the centering cylinder 65 quickly extends, vertically pressing the centered book into the centering working area, restricting its axial degree of freedom. This achieves a seamless connection between "dynamic centering and static pre-pressing," preventing secondary displacement of the centered material caused by the intervention of the gripping component 4 or slight vibrations of the equipment. It effectively maintains the centered positioning of the material, avoiding material displacement due to conveyor belt vibration or airflow interference, and further improving positioning reliability.

[0037] As a further embodiment of the present invention, a front-end cylinder is also included. The front-end cylinder is disposed on the frame 1 on the opposite side of the centering working area of ​​the first conveyor belt 2. The telescopic end of the front-end cylinder is horizontally disposed facing the centering working area. The telescopic end of the front-end cylinder is provided with a front-end support 7 for contacting and limiting the material.

[0038] The front cylinder extends horizontally, and the front support 7 serves as a rigid stop for the longitudinal feeding of materials. After the material is pushed into the centering zone by the rear pushing mechanism, the front end abuts against the support, limiting the final longitudinal position of the material. Together with the centering slide plate 63, it forms a two-dimensional planar positioning reference of "left-right centering + front-back limiting," eliminating the randomness of the book's longitudinal placement and ensuring a constant relative distance between the cutting start point and the book's edge for each cut. Furthermore, the front cylinder retracts the front support 7 to avoid the movement path of the clamping components.

[0039] As a further embodiment of the present invention, it also includes a rear-end motor 81 and a rear-end slider. The frame 1 is provided with a rear-end slide rail along the moving direction of the first conveyor belt 2. The rear-end slider is slidably disposed on the rear-end slide rail. The front and rear ends of the rear-end slide rail are respectively provided with pulleys and fitted with a rear-end belt. The rear-end motor 81 is disposed on the rear-end slide rail and is connected to the pulleys for transmission. The rear-end slider is clamped on the rear-end belt and moves back and forth with the rotation of the rear-end belt to push the material to abut and limit the contact with the front-end support 7.

[0040] During operation, the rear motor 81 drives the rear belt to rotate, causing the rear slider to move along the rear slide rail. The rear support 83 mounted on the rear slider moves accordingly and pushes the material, making the material fit tightly against the front support 7, thus completing the longitudinal positioning. The automatic pushing mechanism driven by the rear motor 81 realizes the automation of the longitudinal positioning of the material, eliminating the need for manual pushing. It features fast positioning speed, high accuracy, and controllable pushing force, avoiding impact damage to the material.

[0041] As a further embodiment of the present invention, the first conveyor belt 2 has two sets arranged in parallel, forming a pushing channel between the two sets of the first conveyor belts. The rear motor 81, the rear slider, and the rear slide rail are all located below the first conveyor belt 2. The rear slider is equipped with a rear cylinder 82, and the telescopic end of the rear cylinder 82 is equipped with a rear support 83. The telescopic action of the rear cylinder 82 is used to drive the rear support 83 to extend or retract from the pushing channel. The frame 1 is equipped with a sensor facing the first conveyor belt 2. The sensor is used to detect the material position. The rear motor 81 and the rear cylinder 82 drive the rear support 83 to extend from the pushing channel and push the material or retract according to the sensor data.

[0042] Sensors monitor in real time whether the material has reached the centering station. Upon detecting a signal, the control module instructs the rear motor 81 to start, and the slider moves forward to below the pushing channel; the rear cylinder 82 then extends, causing the rear support 83 to pass upward through the gap between the two sets of conveyor belts, pushing the material forward. After pushing to the correct position, the cylinder retracts, the support disappears below the channel, and the motor drives the slider to reset. The layered layout cleverly conceals the pushing mechanism, reducing the overall height of the equipment and facilitating docking with upstream and downstream printing / binding equipment; the sensor closed-loop triggering achieves "push upon material detection," with continuous action and no idle stroke; the through-the-top channel design avoids conveyor belt interference, improving space utilization and mechanism reliability.

[0043] As a further embodiment of the present invention, the cutting assembly 5 includes a pressure plate 51, a cutter 54, a vertical cylinder, a vertical slide rail 55, a force measuring mechanism 56, a vertical lead screw 52, ​​and a vertical motor 53. Two sets of the vertical cylinder, vertical slide rail 55, and vertical lead screw 52 are each vertically mounted on the frame 1. The pressure plate 51 is slidably mounted on the vertical slide rail 55. Each end of the vertical lead screw 52 is equipped with a pulley, and the two sets of pulleys are fitted with lead screw belts. The vertical motor 53 is mounted on the frame 1 and connected to the pulleys for transmission. Threaded holes are opened on both sides of the pressure plate 51 and it is fitted onto the vertical lead screw 52. The cutter 54 is mounted on the telescopic end of the vertical cylinder. The force measuring mechanism 56 is mounted on the frame 1 and connected to the cutter 54 for detecting the cutting force of the cutter 54. When the cutter 54 wears down, the cutting force increases. When a set value is reached, it prompts to replace the cutter 54.

[0044] The pressure plate 51 is slidably mounted on the vertical slide rail 55. A pulley is located at the end of the vertical lead screw 52, ​​and the two pulleys are connected by a lead screw belt. The vertical motor 53 drives the pulleys to rotate, thereby driving the vertical lead screws 52 on both sides to rotate synchronously via the lead screw belt, driving the pressure plate 51 to smoothly rise and fall along the vertical slide rail 55. The cutter 54 is mounted on the telescopic end of the vertical cylinder. During cutting, the vertical motor 53 drives the pressure plate 51 to descend first, pressing and fixing the book material; then the vertical cylinder drives the cutter 54 to cut vertically downwards. Simultaneously, during vertical movement, the cutter 54 can also cooperate with the horizontal movement mechanism to achieve synchronous horizontal movement, allowing the cutter 54 to cut the material in an oblique or sliding manner.

[0045] Specifically, the cutter 54 is equipped with transverse cylinders on both sides to drive its transverse movement. A guide plate with a pointed tip is mounted on the frame 1, tilting downwards to both sides. Rollers on the cutter 54 roll against the guide plate. After the transverse cylinders push the cutter 54 a certain distance laterally, the rollers move to one side of the pointed tip. When the cutter 54 is being cut downwards by the vertical cylinder, it is simultaneously guided by the rollers on the guide plate and moves laterally. After the cutter 54 completes one cutting action, the transverse cylinders push the rollers on the cutter 54 to the other side of the pointed tip, causing the cutter 54 to move laterally to the other side while moving downwards, thus achieving the cutting action of the cutter 54.

[0046] The pressure plate 51, driven by the vertical lead screw 52, ​​provides uniform and controllable clamping force, preventing book displacement during the cutting process. The cutter 54 moves horizontally while cutting vertically downwards, achieving a cutting effect similar to sliding cuts, significantly reducing cutting resistance. It is especially suitable for thick books or high-toughness paper, producing a flat and smooth cut surface and effectively avoiding defects such as fuzzing and tearing.

[0047] As a further aspect of the present invention, a control module is also included, which is electrically connected to the first conveyor belt 2, the second conveyor belt 3, the clamping component 4, the cutting component 5, and the centering component 6.

[0048] The control module is electrically connected to all actuators, including the first conveyor belt 2, the second conveyor belt 3, the clamping assembly 4, the cutting assembly 5, and the centering assembly 6. The control module uses a PLC or industrial microcontroller with a built-in preset control program. Operators can input data such as the book's dimensions and cutting parameters through a human-machine interface. Based on the input data and signals from various sensors, the control module automatically coordinates and controls the start and stop of the conveyor belts, the centering action of the centering assembly 6, the movement, rotation, and clamping of the clamping assembly 4, the pressing and cutting of the cutting assembly 5, and the sequence and timing of the rear-end pushing action, achieving a fully automatic "feeding-centering-positioning-clamping-three-sided sequential cutting-discharging" work cycle.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A single-blade digital three-sided paper cutting machine, characterized in that: The system includes a frame, a first conveyor belt, a second conveyor belt, a clamping assembly, and a cutting assembly. The cutting assembly, the first conveyor belt, and the second conveyor belt are arranged in the same direction on the frame. The first conveyor belt, the cutting assembly, and the second conveyor belt are arranged in a three-and-a-half-enclosed manner, forming a transverse channel at the center. The clamping assembly is disposed in the transverse channel and includes a material-picking slide rail, a material-picking screw, a slide block, a rotating mechanism, and a material-picking mechanism. The material-picking slide rail is arranged on the frame along the working area direction of the first conveyor belt, the cutting assembly, and the second conveyor belt. A rod is mounted on the frame and parallel to the material-picking slide rail. A lead screw motor is mounted on the frame and connected to the material-picking lead screw. A slide is sleeved on the material-picking lead screw and slidably connected to the material-picking slide rail. The rotating mechanism and the material-picking mechanism are sequentially mounted on the slide from bottom to top. The rotating mechanism drives the material-picking mechanism to alternately perform cutting and rotating the material 90° actions in the working area of ​​the cutting component to cut the three sides of the material. The material-picking mechanism is used to clamp the material and transfer it sequentially along the working areas of the first conveyor belt, the cutting component, and the second conveyor belt.

2. The single-blade digital three-sided paper cutting machine according to claim 1, characterized in that: The rotating mechanism includes a rotary motor and a turntable, which are connected by a drive mechanism, and the material handling mechanism is disposed on the turntable.

3. The single-blade digital three-sided paper cutting machine according to claim 2, characterized in that: The material handling mechanism includes a clamping base plate and a material handling bracket. The material handling bracket is disposed on the clamping base plate and a first cylinder is disposed on the material handling bracket. The telescopic end of the first cylinder is provided with a clamping top plate and is disposed in the direction of the clamping base plate. The clamping base plate is flush with the working surfaces of the first conveyor belt, the cutting component and the second conveyor belt.

4. A single-blade digital three-sided paper cutting machine according to claim 3, characterized in that: It also includes an alignment component, which includes an alignment bracket and an alignment motor. The alignment bracket spans both sides of the first conveyor belt. An alignment slide rail is provided on the crossbeam of the alignment bracket. Two sets of alignment slide plates are slidably arranged on the alignment slide rail. The alignment motor is mounted on the alignment bracket. Two pulleys are respectively provided at both ends of the crossbeam of the alignment bracket and an alignment belt is fitted on them. The alignment motor is drivenly connected to the pulleys. The two sets of alignment slide plates are respectively clamped to the inner and outer belts of the alignment belt, so that the two sets of alignment slide plates expand or contract synchronously with the rotation of the transmission belt to adjust the alignment of the material in the alignment working area.

5. A single-blade digital three-sided paper cutting machine according to claim 4, characterized in that: The centering assembly also includes a centering cylinder, which is mounted on the centering bracket with its telescopic end facing the centering working area. The centering cylinder is used to pre-clamp the material in the centering working area after the centering slide plate centers the material.

6. A single-blade digital three-sided paper cutting machine according to claim 5, characterized in that: It also includes a front-end cylinder, which is mounted on a frame on the opposite side of the centering working area of ​​the first conveyor belt. The telescopic end of the front-end cylinder is horizontally positioned facing the centering working area, and the telescopic end of the front-end cylinder is provided with a front-end support for contacting and limiting the material.

7. A single-blade digital three-sided paper cutting machine according to claim 6, characterized in that: It also includes a rear motor and a rear slider. The frame is provided with a rear slide rail along the moving direction of the first conveyor belt. The rear slider is slidably disposed on the rear slide rail. The front and rear ends of the rear slide rail are respectively provided with pulleys and a rear belt is sleeved on them. The rear motor is disposed on the rear slide rail and is drivenly connected to the pulleys. The rear slider is clamped on the rear belt and moves back and forth with the rotation of the rear belt to push the material to abut and limit the contact between the material and the front support.

8. A single-blade digital three-sided paper cutting machine according to claim 7, characterized in that: The first conveyor belt has two sets arranged in parallel, forming a pushing channel between the two sets of first conveyor belts. The rear motor, rear slider, and rear slide rail are all located below the first conveyor belt. The rear slider is equipped with a rear cylinder, and the telescopic end of the rear cylinder is equipped with a rear support. The telescopic action of the rear cylinder is used to drive the rear support to extend or retract from the pushing channel. The frame is equipped with a sensor facing the first conveyor belt. The sensor is used to detect the material position. The rear motor and rear cylinder drive the rear support to extend from the pushing channel and push the material or retract based on the sensor data.

9. A single-blade digital three-sided paper cutting machine according to claim 8, characterized in that: The cutting assembly includes a pressure plate, a cutter, a vertical cylinder, a vertical slide rail, a force measuring mechanism, a vertical lead screw, and a vertical motor. There are two sets of each of the vertical cylinder, vertical slide rail, and vertical lead screw, all vertically mounted on the frame. The pressure plate is slidably mounted on the vertical slide rail. Each end of the vertical lead screw is equipped with a pulley, and the two sets of pulleys are fitted with lead screw belts. The vertical motor is mounted on the frame and connected to the pulleys for transmission. The pressure plate has threaded holes on both sides and is fitted onto the vertical lead screw. The cutter is mounted on the telescopic end of the vertical cylinder. The force measuring mechanism is mounted on the frame and connected to the cutter for detecting the cutting force of the cutter.

10. A single-blade digital three-sided paper cutting machine according to claim 9, characterized in that: It also includes a control module, which is electrically connected to the first conveyor belt, the second conveyor belt, the gripping component, the cutting component, and the centering component.

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