Slitting device for printing machine
By using a horizontal displacement mechanism driven by a hydraulic cylinder and a circular cutter head motor, the problem of slow cutting speed of printing press cutters is solved, enabling fast and accurate paper cutting and adapting to the production of books of different sizes and shapes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI QINGFENG DIGITAL TECH CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-05-19
AI Technical Summary
The cutting speed of existing printing press slitting devices is slow, making it difficult to cut paper into different sizes, and manual operation cannot meet the needs of efficient production.
The horizontal displacement mechanism driven by a hydraulic cylinder moves the cutter in both horizontal and vertical directions. Combined with a circular cutter head and motor drive, it enables rapid movement and precise cutting of the cutter. It is equipped with pressure rollers to keep the paper flat and uses indicator lights to assist in positioning.
It enables rapid movement and precise cutting of the cutter, improving the efficiency and accuracy of paper cutting, reducing the chance of cutter wear and paper damage, and adapting to the production needs of books of different sizes and shapes.
Smart Images
Figure CN224256270U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of printing presses, and more particularly to a slitting device for printing presses. Background Technology
[0002] After the printing press prints patterns and text on the paper, the paper is fed sheet by sheet on the printing press. The paper is cut into A3 or A4 size, and the user completes the book production process by taking out the stacked paper and binding it.
[0003] Existing printing press slitting devices include a slide bar, a slider, and a cutter. The slide bar is horizontally mounted on the printing press and located above the paper conveying mechanism. The slider is slidably connected to the slide bar, and the cutter is mounted on the slider. Bolts can be installed on the slider to fix the slider to the slide bar. By sliding the cutter, the operator can cut the paper on the conveying mechanism into different sizes, thereby enabling the printing press to print and produce books of different sizes.
[0004] The aforementioned technical solutions have the following drawbacks: the cutting speed is relatively slow, and with the aid of manual operation, it is difficult for the cutting blade to cut the conveyed paper into different sizes. Utility Model Content
[0005] In order to increase the moving speed of the cutter, this application provides a slitting device for a printing press.
[0006] The slitting device for a printing press provided in this application adopts the following technical solution:
[0007] A slitting device for a printing press includes a horizontal displacement mechanism, a hydraulic cylinder, a cutter, and a cutter holder. The horizontal displacement mechanism is mounted on the printing press, the cylinder body of the hydraulic cylinder is mounted on the horizontal displacement mechanism, and the piston rod of the hydraulic cylinder is connected to the cutter holder. The horizontal displacement mechanism is used to drive the hydraulic cylinder to reciprocate in the horizontal direction, and the hydraulic cylinder is used to drive the cutter holder to reciprocate in the vertical direction. The cutter is mounted on the cutter holder.
[0008] By adopting the above technical solution, a hydraulic cylinder is installed on the horizontal displacement mechanism, enabling the horizontal displacement mechanism to drive the hydraulic cylinder to move horizontally. The hydraulic cylinder can drive the cutter to lift or lower. When the printing press prints paper and sends the printed paper out, the cutter can cut the paper. The cut paper is stacked and stacked, and the user can bind the stacked paper to form a book. When there are folds in the book, the cutter needs to cut the paper with folds into different sizes. The horizontal displacement mechanism and the hydraulic cylinder can drive the cutter to move quickly, thereby cutting the paper on the conveyor mechanism into different sizes. After the cut paper is stacked, the user can bind the paper to form a book. By making the cutter move quickly, each printed paper can be cut to the predetermined size, which is convenient for printing irregularly shaped books.
[0009] Optionally, the horizontal displacement mechanism includes a slide rail and a mover. The slide rail is horizontally arranged, the mover is slidably connected to the slide rail, and the hydraulic cylinder is connected to the mover.
[0010] By adopting the above technical solution, the horizontal displacement mechanism can be set as an electric slide rail or a hydraulically driven slide rail, so that the mover can move quickly on the slide rail. When the hydraulic cylinder retracts, the cutter is raised above the paper. At this time, the horizontal displacement mechanism can drive the cutter to move horizontally, so that the paper remains intact during the movement of the cutter.
[0011] Optionally, a pressure roller is provided on one side of the horizontal displacement mechanism. The pressure roller is rotatably connected to the printing press and presses against the conveyed paper.
[0012] By adopting the above technical solution, a pressure roller is set on one side of the horizontal displacement mechanism, so that the pressure roller presses on the paper of the conveying mechanism, thereby keeping the paper flat on the conveying mechanism. When the cutter cuts the paper, the paper size accuracy can be high.
[0013] Optionally, the cutter is a circular blade disc structure, with a motor mounted on the blade holder. The motor housing is fixed on the blade holder, and the motor output shaft is coaxially connected to the cutter.
[0014] By adopting the above technical solution, by setting the cutter to a circular blade disc and installing a motor on the blade holder, the motor drives the cutter to rotate. When the cutter cuts paper, the surface of the cutter wears evenly, thereby improving the cutting quality of the cutter and reducing the chance of blade wear and paper damage.
[0015] Optionally, the cutter holder has a mounting groove, the cutter is installed in the mounting groove, and baffles are provided on both sides of the cutter holder. The baffles are arc-shaped plates and are set to fit the sides of the cutter.
[0016] By adopting the above technical solution, by opening an installation groove on the cutter holder and setting baffles on both sides of the cutter holder, when the cutter is installed in the installation groove, the cutter holder and baffles cover the upper and sides of the cutter. When the cutter breaks during rotation, the probability of broken cutter fragments flying out of the printing press can be reduced, and the probability of cutter fragments injuring the user can be reduced.
[0017] Optionally, a cover plate is provided on the motor output shaft, and a convex circle is provided on the motor output shaft. A through hole is opened at the center of the cutter, and the motor output shaft is inserted into the through hole. The convex circle and the cover plate together clamp the cutter.
[0018] By adopting the above technical solution, a cover plate is set on the output shaft of the motor, and the cover plate is set on one side of the cutter. When the cutter is installed on the output shaft of the motor, the two end faces of the cutter abut against the convex circle and the cover plate respectively, thereby making the cover plate and the convex circle clamp the cutter and reducing the probability of the cutter sliding along the length direction of the motor output shaft when cutting paper.
[0019] Optionally, the cover plate is a circular plate structure, with a fixing bolt at the center of the cover plate. The fixing bolt passes through the cover plate and is threadedly connected to the motor output shaft. The cover plate is also provided with multiple abutment bolts, which pass through the cover plate and are threadedly connected to it.
[0020] By adopting the above technical solution, a fixing bolt is set at the center of the cover plate, so that the cover plate is connected to the motor output shaft by the fixing bolt. An abutment bolt is set on the top of the cover plate, so that the end of the abutment bolt can abut against the end face of the cutter, thereby making the cutter stuck between the convex circle on the cover plate and the motor output shaft.
[0021] Optionally, an indicator light is provided on the baffle, with the indicator light shining vertically downwards.
[0022] By adopting the above technical solution, an indicator light is installed on the baffle rod to position the cutter holder. When cutters of different thicknesses are installed on the cutter holder, the cutters fall and cut the paper at different points. After the user changes the cutter, the indicator light shines a light spot on the paper, allowing the user to measure the distance between the light spot and the cut line on the paper. This facilitates the user to place shims on both sides of the cutter and adjust the cutter's position. At this time, the horizontal displacement mechanism and hydraulic cylinder can drive the cutter to move periodically along a predetermined trajectory, resulting in high dimensional accuracy of the cut paper.
[0023] In summary, the beneficial technical effects of this application are as follows:
[0024] 1. By installing a hydraulic cylinder on the horizontal displacement mechanism, the horizontal displacement mechanism can drive the hydraulic cylinder to move horizontally. The hydraulic cylinder can drive the cutter to lift or lower. When the printing press prints paper and sends out the printed paper, the cutter can cut the paper. The cut paper is stacked and stacked. The user can bind the stacked paper to form a book. When there are folds in the book, the cutter needs to cut the paper with folds into different sizes. The horizontal displacement mechanism and the hydraulic cylinder can drive the cutter to move quickly, so that the paper on the conveyor can be cut into different sizes. After the cut paper is stacked, the user can bind the paper to form a book. By making the cutter move quickly, each printed paper can be cut to the predetermined size, which is convenient for printing irregularly shaped books.
[0025] 2. By setting the cutter to a circular blade disc and installing a motor on the blade holder, the motor drives the cutter to rotate. When the cutter cuts paper, the surface of the cutter wears evenly, resulting in higher cutting quality and reducing the chance of blade wear and paper damage.
[0026] 3. By setting a cover plate on the motor output shaft, with the cover plate positioned on one side of the cutter, when the cutter is mounted on the motor output shaft, the two end faces of the cutter abut against the convex circle and the cover plate respectively, thereby clamping the cutter with the cover plate and the convex circle, reducing the probability of the cutter sliding along the length of the motor output shaft when cutting paper. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0028] Figure 2 This is a schematic diagram of the mounting structure of the tool holder and hydraulic cylinder according to an embodiment of this application.
[0029] Figure 3 This is a schematic diagram of the motor installation position according to an embodiment of this application.
[0030] Figure 4 This is a schematic diagram of the tool holder structure according to an embodiment of this application.
[0031] Reference numerals in the attached diagram: 1. Horizontal displacement mechanism; 11. Slide rail; 12. Moving element; 2. Hydraulic cylinder; 3. Cutting blade; 4. Blade holder; 41. Mounting groove; 42. Baffle; 5. Motor; 51. Cover plate; 52. Fixing bolt; 53. Abutment bolt; 6. Indicator light; 7. Pressure roller. Detailed Implementation
[0032] The present application will be further described in detail below with reference to the accompanying drawings.
[0033] This application discloses a slitting device for a printing press, referring to... Figure 1The system includes a horizontal displacement mechanism 1, a hydraulic cylinder 2, a cutter 3, and a cutter holder 4. The horizontal displacement mechanism 1 is mounted on the printing press. The cylinder body of the hydraulic cylinder 2 is mounted on the horizontal displacement mechanism 1, and the piston rod of the hydraulic cylinder 2 is connected to the cutter holder 4. The cutter 3 is mounted on the cutter holder 4. The horizontal displacement mechanism 1 drives the hydraulic cylinder 2 to reciprocate horizontally. The length direction of the hydraulic cylinder 2 is perpendicular to the length direction of the horizontal displacement mechanism 1. The hydraulic cylinder 2 drives the cutter holder 4 to reciprocate vertically. When paper is being conveyed below the cutter 3, the cutter 3 is used to cut the paper. The cutter 3 moves along a length direction perpendicular to the paper conveying direction via the horizontal displacement mechanism 1. The hydraulic cylinder 2 controls the raising and lowering of the cutter 3 by extending and retracting, which can adjust the position of the cutter 3 and cut the paper into different sizes.
[0034] Reference Figure 2 The horizontal displacement mechanism 1 includes a slide rail 11 and a mover 12. The slide rail 11 is horizontally fixed on the printing press, and the mover 12 is slidably connected to the slide rail 11. The horizontal displacement mechanism 1 can be a hydraulically driven slide rail. By connecting a hydraulic pipe to the slide rail 11, hydraulic oil is injected into the hydraulically driven slide rail, allowing the mover 12 to reciprocate on the slide rail 11. The cylinder body of the hydraulic cylinder 2 is fixedly connected to the mover 12.
[0035] Reference Figure 2 , Figure 3 and Figure 4 The blade holder 4 has a mounting groove 41, and the cutter 3 is installed in the mounting groove 41. The cutter 3 has a disc structure. The blade holder 4 has baffles 42 on both sides. The baffles 42 have an arc-shaped plate structure. When the cutter 3 is installed in the mounting groove 41, the blade holder 4 and the baffles 42 are framed on the outside of the cutter 3. The lower side of the cutter 3 extends out and cuts the paper. When the cutter 3 breaks, it can reduce the chance of fragments flying out and injuring the user.
[0036] Reference Figure 3 A motor 5 is mounted on the blade holder 4, and the housing of the motor 5 is fixed to the blade holder 4. The output shaft of the motor 5 is connected to the cutter 3, and the motor 5 is used to drive the cutter 3 to rotate. A through hole is opened at the center of the cutter 3, and the output shaft of the motor 5 passes through the through hole.
[0037] Reference Figure 3 and Figure 4 The output shaft of motor 5 is provided with a convex circle, and a cover plate 51 is detachably connected to the output shaft of motor 5. The cover plate 51 is used to clamp the cutter 3. When the cutter 3 is set on the output shaft of motor 5, the cover plate 51 and the convex circle together clamp the cutter 3, so that the cutter 3 can rotate and cut the paper.
[0038] Reference Figure 4The cover plate 51 is a circular plate structure with a through hole at its center. A fixing bolt 52 is installed in the through hole for threaded connection to the output shaft end face of the motor 5. Multiple abutment bolts 53 are provided on the cover plate 51, equidistantly spaced along the circumference of the cover plate 51. The abutment bolts 53 penetrate the cover plate 51 and are threadedly connected to it. The ends of the abutment bolts 53 abut against one side surface of the cutter 3. When the user installs cutters 3 of different thicknesses on the cutter holder 4, adjusting the abutment bolts 53 allows the cutter 3 to abut against the convex circle of the motor 5 output shaft and remain fixed. The cover plate 51 serves to fix the cutter 3 and protect the user. When the cutter 3 breaks, it reduces the probability of the cutter 3 flying along the length of the motor 5 output shaft, thereby reducing the chance of cutter fragments injuring the user.
[0039] Reference Figure 4 The blade holder 4 is equipped with an indicator light 6, which is fixed outside the baffle 42 and illuminates downwards. The indicator light 6 illuminates a spot on the conveyed paper, thus positioning the blade holder 4. By cutting the paper with the cutter 3 and observing whether the cut aligns with the photoelectric sensor, the user can determine the accuracy of the cutter 3's position. When the user replaces the cutter 3, it allows for quick and easy blade alignment, ensuring the cut paper meets the expected size. When cutters 3 of different thicknesses are installed on the blade holder 4, the user can install shims of different thicknesses on the output shaft of the motor 5 to align the cutter 3 with the position of the indicator light 6. When the horizontal displacement mechanism 1 and the hydraulic cylinder 2 drive the cutter 3 to move automatically via the control module, the cutter 3 lands accurately, resulting in high-precision cut paper dimensions.
[0040] Reference Figure 1 The printing press is equipped with multiple pressure rollers 7, which are located on one side of the horizontal displacement mechanism 1. The pressure rollers 7 are used to press on the conveyed paper to keep the paper flat during conveying and achieve high cutting accuracy.
[0041] The implementation principle of this application embodiment is as follows: by setting a horizontal displacement mechanism 1 in the printing press, the cutter 3 can move along the horizontal straight line and the vertical direction, so that the cutter 3 can move during cutting, and the cutter 3 can cut the paper in the conveying process into different sizes for easy binding. By setting a motor 5 on the cutter holder 4, the motor 5 drives the cutter 3 to rotate, so that the cutter 3 can rotate and cut the paper, thereby making the surface of the cutter 3 wear evenly and the cutting quality better.
[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A slitting device for a printing press, characterized in that: It includes a horizontal displacement mechanism (1), a hydraulic cylinder (2), a cutter (3) and a knife holder (4). The horizontal displacement mechanism (1) is installed on the printing press. The cylinder body of the hydraulic cylinder (2) is installed on the horizontal displacement mechanism (1). The piston rod of the hydraulic cylinder (2) is connected to the knife holder (4). The horizontal displacement mechanism (1) is used to drive the hydraulic cylinder (2) to move back and forth in the horizontal direction. The hydraulic cylinder (2) is used to drive the knife holder (4) to move back and forth in the vertical direction. The cutter (3) is installed on the knife holder (4).
2. The slitting device for a printing press according to claim 1, characterized in that: The horizontal displacement mechanism (1) includes a slide rail (11) and a mover (12). The slide rail (11) is horizontally arranged, and the mover (12) is slidably connected to the slide rail (11). The hydraulic cylinder (2) is connected to the mover (12).
3. The slitting device for a printing press according to claim 1, characterized in that: The horizontal displacement mechanism (1) has a pressure roller (7) on one side. The pressure roller (7) is rotatably connected to the printing press and presses on the conveyed paper.
4. A slitting device for a printing press according to claim 1, characterized in that: The cutter (3) is a circular cutter disc structure. A motor (5) is installed on the cutter holder (4). The housing of the motor (5) is fixed on the cutter holder (4). The output shaft of the motor (5) is coaxially connected to the cutter (3).
5. A slitting device for a printing press according to claim 4, characterized in that: The blade holder (4) has an installation groove (41) and the cutter (3) is installed in the installation groove (41). The blade holder (4) has baffles (42) on both sides. The baffles (42) are arc-shaped plates and are set to fit the sides of the cutter (3).
6. A slitting device for a printing press according to claim 5, characterized in that: The output shaft of the motor (5) is provided with a cover plate (51) and a convex circle. A through hole is opened at the center of the cutter (3). The output shaft of the motor (5) is inserted into the through hole. The convex circle and the cover plate (51) together hold the cutter (3).
7. A slitting device for a printing press according to claim 6, characterized in that: The cover plate (51) is a circular plate structure. A fixing bolt (52) is provided at the center of the cover plate (51). The fixing bolt (52) passes through the cover plate (51) and is threadedly connected to the output shaft of the motor (5). Multiple abutting bolts (53) are provided on the cover plate (51). The abutting bolts (53) pass through the cover plate (51) and are threadedly connected to the cover plate (51).
8. A slitting device for a printing press according to claim 7, characterized in that: An indicator light (6) is provided on the baffle (42), and the indicator light (6) shines vertically downward.