Slitting mechanism for printing machine

Abstract

The slitting mechanism comprises a back plate, a protective shell, a movable plate, a slitting base and a mechanical cutting blade, a first groove and a second groove are formed in the side wall of the back plate, an adjusting motor is installed in the second groove, the output end of the adjusting motor extends into the first groove and is provided with a first lead screw, and the output end of the adjusting motor is provided with a second lead screw. The movable plate is arranged on one side of the back plate, a cutting motor is installed in the middle of one end of the movable plate, the output end of the cutting motor extends to the inner side of a movable groove in the movable plate and is provided with a second lead screw, the second lead screw is sleeved with a movable seat, and a mechanical cutting blade is installed in the movable seat through a U-shaped frame. By means of linkage of the driving assembly and the adjusting mechanism and combination of the lead screw transmission structure, the slitting mechanism can automatically move in the horizontal direction, and due to the high-precision characteristic of the lead screw transmission structure, the slitting mechanism has higher stability and reliability in the moving process.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, specifically to a slitting mechanism for a printing press. Background Technology

[0002] In the printing production process, the slitting mechanism is a key piece of equipment used to cut printed rolls or sheets to predetermined dimensions. In traditional printing press slitting mechanisms, mechanical cutting is often used, typically employing mechanical blades to cut the paper. While this method is simple and easy to implement, it has many shortcomings in actual operation. Specifically, the process is cumbersome, time-consuming, and has low positioning accuracy, making it difficult to meet the demands of high-precision and high-efficiency production.

[0003] To address the aforementioned problems, there is an urgent need for a slitting mechanism capable of achieving high-precision positioning, improving cutting quality, enhancing production efficiency, and increasing production flexibility. This invention effectively overcomes the technical shortcomings of traditional slitting mechanisms by introducing a linkage design between the drive component and the adjustment mechanism, ultrasonic-assisted cutting technology, and a reciprocating cutting structure, thus possessing significant practical value and application prospects. Utility Model Content

[0004] The purpose of this invention is to provide a slitting mechanism for a printing press to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a slitting mechanism for a printing press, comprising a back plate, a protective shell, a movable plate, a slitting seat, and a mechanical cutting blade. The protective shell is provided on one side of the back plate, and the side wall of the back plate has a first groove and a second groove. A scale line is provided on the side wall of the back plate above the first groove. An adjusting motor is installed inside the second groove, and the output end of the adjusting motor extends into the interior of the first groove and is fitted with a lead screw. The movable plate is located on one side of the back plate, and both ends of one side of the movable plate are provided with driving blocks connected to the lead screw. A cutting motor is installed in the middle of one end of the movable plate, and the output end of the cutting motor extends into the inner side of the movable groove inside the movable plate and is fitted with a lead screw. A movable seat is sleeved on the lead screw. A mechanical cutting blade is installed inside the movable seat via a U-shaped frame. A first cutter head and a second cutter head are respectively provided on both sides of the mechanical cutting blade. An ultrasonic generator is provided inside the U-shaped frame above the mechanical cutting blade. An infrared sensor is provided on the top of the movable seat facing the scale line.

[0006] Preferably, the inner walls on both sides of the movable groove are vertically provided with sliding grooves II, and the two sides of the movable seat are provided with sliders II, one end of which extends into the interior of the sliding grooves II.

[0007] Preferably, a slider is provided on the other side of the movable plate, and a groove is provided laterally on the inner wall of the protective housing at the position corresponding to the slider, with one end of the slider extending into the interior of the groove.

[0008] Preferably, a slitting seat is provided at the bottom of the protective housing below the movable plate, and guide wheels are provided at both ends of the slitting seat, and slitting grooves are uniformly provided on the top of the slitting seat.

[0009] Preferably, the length of the slitting groove extends through the entire slitting seat, the width of the slitting groove is greater than the thickness of the mechanical cutting blade, and the top of the guide wheel is at the same horizontal height as the top of the slitting seat.

[0010] Preferably, leveling rollers are provided at the bottom of the movable plates on both sides of the mechanical cutting blade.

[0011] This utility model relates to a slitting mechanism for a printing press, which has significant advantages and positive effects compared to the prior art, as detailed below:

[0012] 1. Improve production flexibility and efficiency:

[0013] Through the linkage of the drive components and the adjustment mechanism, combined with the lead screw transmission structure, this slitting mechanism can achieve automatic movement in the horizontal direction. This design overcomes the cumbersome and inefficient manual adjustment problems of traditional slitting mechanisms, significantly improving the flexibility and efficiency of the production process. The high-precision characteristics of the lead screw transmission structure give the slitting mechanism higher stability and reliability during movement. In addition, the use of scale lines and sensors enables precise positioning of the slitting position, further improving production efficiency and product quality.

[0014] 2. Improve the quality of the cut surface:

[0015] This invention integrates an ultrasonic generator into the mechanical cutting head, utilizing ultrasonic vibration to assist cutting. Ultrasonic vibration effectively reduces resistance during the cutting process, making cutting smoother and significantly improving the quality of the cut surface. Compared to traditional mechanical cutting methods, ultrasonic-assisted cutting reduces friction between the cutting head and the material, lowers heat generation during the cutting process, avoids material deformation or scorching due to high temperatures, and ensures smooth and flat cutting edges.

[0016] 3. Reduce cutter head reset time and improve production efficiency:

[0017] The mechanical cutting head, driven by a lead screw, enables reciprocating cutting. This design significantly reduces the time required for the cutting head to reset, increasing cutting frequency and production efficiency. Traditional slitting mechanisms require manual or auxiliary equipment to reset the cutting head after each cut, which is time-consuming and complex. This invention, through precise control of the lead screw drive, allows the cutting head to quickly return to its initial position after each cut, ready for the next, thus significantly shortening the production cycle and improving overall production efficiency.

[0018] 4. Energy conservation and emission reduction, lowering production costs:

[0019] The application of ultrasonic-assisted cutting technology not only improves cutting quality but also reduces energy consumption during the cutting process to some extent. Ultrasonic vibration reduces cutting resistance, thereby reducing the power requirements of the drive components and achieving energy conservation and emission reduction. Furthermore, the improved surface finish reduces the need for subsequent processing and treatment, lowering production costs.

[0020] In summary, this utility model, through innovative design and technological application, achieves automatic movement and precise positioning of the slitting mechanism in the horizontal direction, improves the quality of the cut surface, reduces the blade reset time, enhances production efficiency and flexibility, and achieves energy saving and emission reduction effects, demonstrating significant technical advantages and positive results. Attached Figure Description

[0021] Figure 1 This is a side view of the structure of this utility model;

[0022] Figure 2 This is a top view of the structure of this utility model;

[0023] Figure 3 This is a side view of the slit portion of the present invention.

[0024] Figure 4 This is a schematic diagram of the mechanical cutting blade structure of this utility model;

[0025] In the diagram: 1. Back plate; 2. Movable plate; 3. Scale line; 4. Moving seat; 5. Protective shell; 6. Groove II; 7. Guide wheel; 8. Sliding seat; 9. Mechanical cutting blade; 901. Blade head I; 902. Blade head II; 10. Sliding groove; 11. Lead screw I; 12. Movable groove; 13. Cutting motor; 14. Drive bait block; 15. Groove I; 16. Adjusting motor; 17. Lead screw II; 18. Slider I; 19. Infrared sensor; 20. Slide 1; 21. Slide 2; 22. Slider II; 23. U-shaped frame; 24. Ultrasonic generator; 25. Leveling roller. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figure 1-4 The present invention provides an embodiment of a slitting mechanism for a printing press, comprising a back plate 1, a protective housing 5, a movable plate 2, a slitting seat 8, and a mechanical cutting blade 9. The protective housing 5 is provided on one side of the back plate 1, and the side wall of the back plate 1 is provided with a first groove 15 and a second groove 6. A scale line 3 is provided on the side wall of the back plate 1 above the first groove 15.

[0028] The backplate 1 is the main body of this device and is made of high-strength material to ensure its durability and support performance. The size of the backplate 1 can be adjusted according to actual application needs to meet the usage requirements of different scenarios.

[0029] The protective housing 5 is located on one side of the back plate 1, specifically as follows: Figure 1 As shown in the diagram. The main function of the protective housing 5 is to protect the back panel 1 and its internal components from external impacts and damage. The protective housing 5 may be made of plastic, metal, or other high-strength materials, and its shape and size should be designed according to the specific structure of the back panel 1 to ensure that it can completely cover the area that needs protection.

[0030] The protective housing 5 is connected to the back plate 1 by screws, clips, or other fixing methods to ensure that it will not fall off during use. The inner side of the protective housing 5 is provided with a cushioning layer, such as a rubber pad or foam material, to further absorb impact and protect the internal components.

[0031] The back plate 1 has a groove 15 and a groove 6 on its side wall. The main function of the grooves 15 and 6 is to install and fix other auxiliary components.

[0032] The groove 15 is located above the side wall of the back plate 1, and its depth and width are designed according to the size of the component to be installed.

[0033] Groove 26 has a similar structure to Groove 15, but its size and position can be adjusted according to actual needs. The design of Groove 26 should ensure that it can fit well with other components, facilitating installation and maintenance.

[0034] An adjustment motor 16 is installed inside the second groove 6. The output end of the adjustment motor 16 extends into the first groove 15 and is equipped with a lead screw 11. The movable plate 2 is located on one side of the back plate 1, and both ends of one side of the movable plate 2 are equipped with drive bait blocks 14 connected to the lead screw 11.

[0035] On the other side of the movable plate 2, a slider 18 is provided, and a groove 20 is provided horizontally on the inner wall of the protective shell 5 at the position corresponding to the slider 18. One end of the slider 18 extends into the interior of the groove 20.

[0036] The movable plate 2 is located on one side of the back plate 1. The material of the movable plate 2 is the same as or similar to that of the back plate 1 to ensure overall coordination and durability. The design of the movable plate 2 allows it to slide within the plane of the back plate 1 to achieve the adjustment function of this utility model.

[0037] The second groove 6 is located inside the back plate 1, and the adjusting motor 16 is installed inside it. The selection of the adjusting motor 16 should be determined according to the actual application requirements. Usually, a small DC motor or stepper motor is selected to provide sufficient driving force and precise adjustment capability. The output end of the adjusting motor 16 extends into the interior of the first groove 15 and is connected to the movable plate 2 through the mounting screw 11.

[0038] Lead screw 11 is installed at the output end of regulating motor 16, and its axis is parallel to the sliding direction of movable plate 2. Lead screw 11 should be made of high-strength metal to ensure that it does not deform or get damaged during long-term use. Both ends of one side of movable plate 2 are provided with drive blocks 14 connected to lead screw 11. Drive blocks 14 can be made of engineering plastic or metal, and have threaded holes inside that match the threads of lead screw 11 to achieve linear movement of movable plate 2 when lead screw 11 rotates.

[0039] On the other side of the movable plate 2, a slider 18 is provided. The material of slider 18 is the same as or similar to that of the drive bait block 14 to ensure overall coordination and durability. One end of slider 18 extends into the groove 20 at the corresponding position on the inner wall of the protective housing 5. The groove 20 is arranged laterally on the inner wall of the protective housing 5, and its length is slightly greater than the length of slider 18 to ensure that slider 18 can slide freely in the groove 20 without getting stuck.

[0040] A cutting motor 13 is installed in the middle of one end of the movable plate 2. The output end of the cutting motor 13 extends to the inside of the movable groove 12 inside the movable plate 2 and is equipped with a lead screw 17. A movable seat 4 is sleeved on the lead screw 17. The inner walls on both sides of the movable groove 12 are vertically provided with sliding grooves 21. The movable seat 4 is provided with sliders 22 on both sides. One end of the sliders 22 extends into the inside of the sliding grooves 21.

[0041] A cutting motor 13 is installed at the middle position of one end of the movable plate 2 of this utility model. The output end of the cutting motor 13 extends through a pre-set hole inside the movable plate 2 to the inside of the movable groove 12. The cutting motor 13 is installed by bolt fixing to ensure its stability during operation.

[0042] Inside the movable groove 12, a lead screw 17 is installed. One end of the lead screw 17 is connected to the output end of the cutting motor 13, and the other end is fixed to the inner wall of the movable groove 12. The axis of the lead screw 17 is parallel to the length direction of the movable groove 12 to ensure the linear movement of the moving seat.

[0043] A movable seat 4 is fitted onto the lead screw 17. The movable seat 4 is threaded into the lead screw 17, so that when the cutting motor 13 drives the lead screw 17 to rotate, the movable seat 4 can move along the axis of the lead screw 17 within the movable groove 12.

[0044] The inner walls on both sides of the movable groove 12 are vertically provided with sliding grooves 21. The length of sliding grooves 21 matches the length of the movable groove 12 to ensure that the movable seat 4 is always within the range of sliding grooves 21 during the entire movement process.

[0045] Slider 22 is provided on both sides of the movable base 4. One end of slider 22 is fixed to the movable base 4, and the other end extends into the interior of slide groove 21. The sliding friction between slider 22 and slide groove 21 is adopted to reduce resistance during movement.

[0046] The slider 22 is made of high-strength, wear-resistant materials, such as polytetrafluoroethylene (PTFE), to extend its service life. The inner wall surface of the slide groove 21 is smoothed to further reduce the coefficient of friction and improve the moving accuracy of the moving seat.

[0047] The mechanical cutting blade 9 is installed inside the movable base 4 via a U-shaped frame 23. A first cutting head 901 and a second cutting head 902 are respectively set on both sides of the mechanical cutting blade 9. An ultrasonic generator 24 is set on the inner side of the U-shaped frame 23 above the mechanical cutting blade 9. An infrared sensor 19 is set on the top of the movable base 4 facing the scale line 3.

[0048] The movable base 4 serves as the base for the entire device and is made of high-strength materials to ensure the stability and durability of the device.

[0049] The U-shaped frame 23 is fixedly installed inside the movable base 4. It is U-shaped and its two ends are fixed to the two side walls of the movable base 4. The main function of the U-shaped frame 23 is to support and fix the mechanical cutting blade 9.

[0050] The mechanical cutting blade 9 is mounted in the center of the U-shaped frame 23 by bolts or other fixing methods. The blade 9 is made of a high-hardness alloy material to ensure cutting efficiency and durability.

[0051] The mechanical cutting blade 9 has a first cutting head 901 and a second cutting head 902 on each side. The design of the first cutting head 901 and the second cutting head 902 allows it to cut from two directions respectively during the cutting process, improving the uniformity and efficiency of the cutting.

[0052] The ultrasonic generator 24 is installed inside the U-shaped frame 23, above the mechanical cutting blade 9. The ultrasonic generator 24 generates ultrasonic waves through high-frequency vibration, which act on the mechanical cutting blade 9 to reduce frictional resistance during the cutting process and improve cutting accuracy and efficiency.

[0053] The ultrasonic generator 24 is connected to a power source via wires, and its control circuit (not shown in the figure) can adjust the frequency and intensity of the ultrasonic waves.

[0054] Infrared sensor 19 is mounted on top of the movable base 4, facing the scale line 3. The main function of infrared sensor 19 is to detect the position and moving speed of the object being cut, so as to accurately control the cutting process.

[0055] The infrared sensor 19 is connected to the control circuit (not shown in the figure) via a data cable to transmit detection data in real time.

[0056] A slitting seat 8 is provided at the bottom of the protective shell 5 below the movable plate 2, and guide wheels 7 are provided at both ends of the slitting seat 8. Slitting grooves 10 are evenly provided on the top of the slitting seat 8.

[0057] The length of the slitting groove 10 extends through the entire slitting seat 8, the width of the slitting groove 10 is greater than the thickness of the mechanical cutting blade 9, and the top of the guide wheel 7 is at the same horizontal height as the top of the slitting seat 8.

[0058] The bottom of the movable plates 2 on both sides of the mechanical cutting blade 9 is equipped with leveling rollers 25.

[0059] The main function of the slitting seat 8 is to ensure the stability and accuracy of the cutting process. A guide wheel 7 is installed at each end of the slitting seat 8. The guide wheel 7 guides the material to move smoothly on the top of the slitting seat 8.

[0060] The top of the slitting seat 8 is uniformly provided with slitting grooves 10. The length of the slitting grooves 10 extends through the entire slitting seat 8, ensuring that the mechanical cutting blade 9 can move in a straight line throughout the entire cutting process. The width of the slitting grooves 10 is designed to be greater than the thickness of the mechanical cutting blade 9, which can prevent the blade from affecting the cutting effect due to excessive friction during movement.

[0061] The top of the guide roller 7 is at the same level as the top of the slitting seat 8, which avoids cutting deviations caused by height differences. The guide roller 7 is preferably made of a highly wear-resistant material, such as high-carbon steel or alloy steel, to ensure its stability and durability in long-term use.

[0062] The bottom of the movable plates 2 on both sides of the mechanical cutting blade 9 is equipped with leveling rollers 25. The main function of the leveling rollers 25 is to keep the cutting material flat and prevent the material from bending or deforming during the cutting process. The material of the leveling rollers 25 is preferably rubber or polyurethane, which has a certain degree of elasticity and wear resistance, and can effectively press the material to ensure cutting quality.

[0063] In this embodiment, when a cutting position is required, the adjusting motor 16 is started to drive the lead screw 11 to rotate. The thread of the lead screw 11 engages with the threaded hole in the drive block 14, causing the movable plate 2 to move linearly within the plane of the back plate 1. When the movable plate 2 moves, the slider 18 slides synchronously within the slide groove 20 to ensure that the movement of the movable plate 2 is smooth and without deviation. When the movable plate 2 moves to the predetermined position, the control circuit stops the operation of the adjusting motor 16, and the movable plate 2 stabilizes at the current position. The cutting motor 13 starts, and its output end drives the lead screw 17 to rotate. Due to the threaded engagement between the lead screw 17 and the movable seat 4, the mechanical cutting blade 9 at the bottom of the movable seat 4 moves from one end of the cutting groove 10 of the cutting seat 8 to the other end, thereby cutting the printed material. During the movement of the mechanical cutting blade 9, the ultrasonic generator 24 is started, generating ultrasonic waves through high-frequency vibration, which act on the mechanical cutting blade 9 to reduce the frictional resistance during the cutting process and improve the cutting accuracy and efficiency.

[0064] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A slitting mechanism for a printing press, characterized by: Including backplate (1), protective shell (5), movable plate (2), slitting seat (8) and mechanical cutting blade (9), one side of the backplate (1) is provided with the protective shell (5), and the side wall of the backplate (1) is provided with recess one (15) and recess two (6), the side wall of the backplate (1) above recess one (15) is provided with scale line (3), the inside of recess two (6) is installed with adjusting motor (16), the output end of adjusting motor (16) extends to the inside of recess one (15) and is installed with lead screw one (11), movable plate (2) is arranged on one side of backplate (1), and the two ends of one side of the movable plate (2) are provided with the drive bait block (14) connected with lead screw one (11), the middle of one end of the movable plate (2) is installed with cutting motor (13), the output end of cutting motor (13) extends to the inside of the movable groove (12) in the movable plate (2) and is installed with lead screw two (17), the mobile seat (4) is sleeved on the lead screw two (17), the mechanical cutting blade (9) is installed in the mobile seat (4) through the U-shaped frame (23), the two sides of the mechanical cutting blade (9) are provided with cutter head one (901) and cutter head two (902) respectively, and the inside of the U-shaped frame (23) above the mechanical cutting blade (9) is provided with ultrasonic generator (24), the top of the mobile seat (4) is provided with infrared sensor (19) towards the position of scale line (3).

2. A slitting mechanism for a printing press according to claim 1, characterized in that: The inner wall of the movable groove (12) is vertically provided with sliding groove two (21) on both sides, the mobile seat (4) is provided with sliding block two (22) on both sides, one end of the sliding block two (22) extends to the inside of the sliding groove two (21).

3. A slitting mechanism for a printing press as claimed in claim 1, wherein: The other side of the movable plate (2) is provided with sliding block one (18), and the inner wall of the protective shell (5) is horizontally provided with sliding groove one (20) at the position corresponding to the sliding block one (18), one end of the sliding block one (18) extends to the inside of the sliding groove one (20).

4. A slitting mechanism for a printing press as claimed in claim 1, wherein: The inside bottom of the protective shell (5) below the movable plate (2) is provided with slitting seat (8), and the two ends of the slitting seat (8) are provided with guide wheel (7), and the top of the slitting seat (8) is uniformly provided with slitting groove (10).

5. A slitting mechanism for a printing press according to claim 4 wherein: The length of the slitting groove (10) penetrates the entire slitting seat (8), the width of the slitting groove (10) is greater than the thickness of the mechanical cutting blade (9), and the top of the guide wheel (7) and the top of the slitting seat (8) are at the same horizontal height.

6. A slitting mechanism for a printing press as claimed in claim 1, characterized in that: The bottom of the movable plate (2) on both sides of the mechanical cutting blade (9) is provided with leveling roller (25).

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