Quick die replacement structure of a rotary die cutting machine

Abstract

The utility model relates to round pressure round die -cutting machine technical field discloses the quick replacement structure of die -cutting machine of round pressure round, including machine body, die -cutting cylinder and die -cutting knife, the inside middle lower part of machine body is rotatively connected to the die -cutting cylinder, the inside middle upper part of machine body is rotatively connected to the die -cutting knife, the both ends of die -cutting cylinder and die -cutting knife all are provided with quick replacement mechanism, for making die -cutting knife have quick dismounting function, the upper middle part of rear side of machine body is fixedly connected with the installation support board, the top left end of installation support board is provided with drive mechanism, for driving die -cutting knife to rotate, in the utility model, through the installation groove cooperation positioning member of top cylinder gear limit relative rotation, fastening bolt passes bolt hole and fixes both, when replacing, can dismantle bolt and draw sword, do not need to dismantle transmission component to be able to change sword, shorten replacement time, avoid installation deviation, promote die -cutting machine operation efficiency and practicality, ensure connection stability simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of rotary die-cutting machine technology, and in particular to a quick-change die-cutting die structure for rotary die-cutting machines. Background Technology

[0002] Rotary die-cutting machines are used in the packaging and printing industries to achieve precise die-cutting of materials. They are suitable for mass production of various flexible materials such as paper, film, and metal foil.

[0003] The die is the component of a rotary die-cutting machine that shapes materials. It transfers the preset pattern and shape onto the material to be processed through mechanical force, determining the final shape and precision of the die-cut product. During the rotation of the roller, the die cuts or indents the material through the pressure between it and the die-cutting roller. At the same time, it is necessary to avoid the blade from chipping and wearing due to uneven pressure or positioning deviation.

[0004] Existing rotary die-cutting machines achieve continuous die-cutting by fixing the die to the surface of the die-cutting roller and applying pressure to the material through the rotation of the die-cutting roller, thus avoiding the inefficiency caused by intermittent operation in flatbed die-cutting machines. However, the die of existing rotary die-cutting machines is mostly fixed by bolts, welding, or integral nesting. The die and roller are rigidly connected by multiple connectors. When it is necessary to change to a different specification die, the operator must first disassemble the gears or bearings at both ends of the roller, and then unscrew the bolts fixing the die or remove the nesting structure. Some machines also require adjustment of the roller spacing and parallelism. This makes the die replacement process cumbersome and time-consuming. Moreover, improper operation during disassembly can easily damage the roller surface or the die positioning reference. As a result, the die of existing rotary die-cutting machines are fixedly installed, and disassembly is cumbersome. This not only increases the labor intensity of operators, but also leads to longer equipment downtime, making it difficult to meet the needs of rapid changeover for small batches and multiple varieties of products. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a quick-change structure for the die of a rotary die-cutting machine, aiming to improve the problem that the existing rotary die-cutting machines have fixed-installation dies, which are cumbersome to disassemble and difficult to adapt to the needs of rapid switching of small batches and multiple varieties of products, thus reducing the efficiency of operation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a quick-change structure for the die of a rotary die-cutting machine, comprising a machine body, a die-cutting roller and a die-cutting blade, wherein the die-cutting roller is rotatably connected to the lower inner part of the machine body, and the die-cutting blade is rotatably connected to the upper inner part of the machine body; Both ends of the die-cutting roller and the die-cutting blade are equipped with quick-change mechanisms to enable the die-cutting blade to be quickly disassembled. A mounting plate is fixedly connected to the upper rear side of the machine body, and a driving mechanism is provided at the top left end of the mounting plate for driving the die-cutting blade to rotate. The quick-change mechanism includes multiple cylindrical gears. The two bottom cylindrical gears are fixedly connected to both ends of the die-cutting roller. The inner sides of the two top cylindrical gears are provided with mounting grooves. Both ends of the die-cutting blade are fixedly connected with positioning components. The front sides of the two positioning components are provided with bolt holes. Fastening bolts pass through the interior of the two bolt holes. The ends of the two fastening bolts are threaded to the inner sides of the two mounting grooves.

[0007] As a further description of the above technical solution: The drive mechanism includes a drive motor. The output end of the drive motor and the left side of the top left cylindrical gear are both fixedly connected to sprockets. The two sprockets are externally connected to a chain. The drive motor is fixedly installed on the top left end of the mounting plate through a shock-absorbing component.

[0008] As a further description of the above technical solution: The shock-absorbing assembly includes a shock-absorbing pad, the top of which is attached to the bottom of the drive motor. Each of the four corners of the top of the shock-absorbing pad is pierced by a fixing bolt, and the ends of the fixing bolts are threaded to the top of the mounting plate.

[0009] As a further description of the above technical solution: A guide plate is fixedly connected to the middle of the rear side of the machine body, and a guide groove is provided on the top of the guide plate.

[0010] As a further description of the above technical solution: The front side of the guide plate adopts an arc surface design, and the distance between the arc surface and the rear side of the die-cutting roller is set to 5mm-15mm, preferably 10mm.

[0011] As a further description of the above technical solution: A controller is fixedly connected to the front left end of the machine body, and the controller is electrically connected to the drive motor.

[0012] As a further description of the above technical solution: The bottom left and right sides of the machine body are fixedly connected with anti-slip pads. The bottom surface of the anti-slip pads is made of rubber and has a corrugated design.

[0013] As a further description of the above technical solution: The diameters of the sprocket at the output end and the sprocket at the driven end are 50mm and 100mm, respectively.

[0014] This utility model has the following beneficial effects: 1. In this utility model, a cylindrical gear is used to connect the die-cutting roller and the die-cutting blade respectively. The mounting groove of the top cylindrical gear cooperates with the positioning component to restrict relative rotation, and the fastening bolt passes through the bolt hole to fix the two. The drive mechanism drives the top cylindrical gear to rotate, meshing with the bottom gear to drive the die-cutting roller. When replacing, the bolt can be removed to remove the blade. This achieves the goal of maintaining a preset speed ratio between the die-cutting blade and the die-cutting roller, allowing for blade replacement without disassembling the transmission components, shortening replacement time, avoiding installation deviations, improving the operating efficiency and practicality of the die-cutting machine, and ensuring stable connection.

[0015] 2. In this utility model, the drive motor is mounted on the mounting plate via a shock-absorbing component. The output sprocket is connected to the cylindrical gear side sprocket via a chain, which transmits power to drive the die-cutting blade and die-cutting cylinder to rotate. The shock-absorbing pads absorb vibration, the fixing bolts stabilize the motor, and the sprocket diameter difference determines the speed ratio. This achieves synchronous operation of the die-cutting blade and die-cutting cylinder to ensure accuracy, reduces vibration, prevents component loosening and chain detachment, simplifies the structure without the need for an additional speed change mechanism, and eliminates the need to disassemble the transmission components when changing the blade, thereby improving the reliability, efficiency, and ease of die replacement of the die-cutting machine. Attached Figure Description

[0016] Figure 1 A perspective view of the quick-change die-cutting structure of the rotary die-cutting machine proposed in this utility model; Figure 2 This is a front view of the quick-change die-cutting structure for the rotary die-cutting machine proposed in this utility model; Figure 3 This is a schematic diagram of the drive mechanism in the quick-change die-cutting structure of the rotary die-cutting machine proposed in this utility model. Figure 4 This is a structural exploded view of the quick-change mechanism in the quick-change structure of the rotary die-cutting machine proposed in this utility model. Figure 5 This is a structural exploded view of the shock-absorbing component in the quick-change die-cutting structure of the rotary die-cutting machine proposed in this utility model; Figure 6 This is a schematic diagram of the guide plate in the quick-change die-cutting structure of the rotary die-cutting machine proposed in this utility model.

[0017] Legend: 1. Machine body; 2. Die-cutting roller; 3. Die-cutting blade; 4. Quick change mechanism; 41. Cylindrical gear; 42. Mounting slot; 43. Positioning component; 44. Bolt hole; 45. Fastening bolt; 5. Mounting support plate; 6. Drive mechanism; 61. Drive motor; 62. Sprocket; 63. Chain; 64. Shock absorption assembly; 641. Shock absorption pad; 642. Fixing bolt; 7. Guide plate; 8. Guide groove; 9. Controller; 10. Anti-slip foot pad. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-4 The present invention provides an embodiment of a quick-change die-cutting structure for a rotary die-cutting machine, comprising a machine body 1, a die-cutting roller 2, and a die-cutting blade 3. The die-cutting roller 2 is rotatably connected to the lower inner part of the machine body 1, and the die-cutting blade 3 is rotatably connected to the upper inner part of the machine body 1. Both ends of the die-cutting roller 2 and the die-cutting blade 3 are equipped with quick-change mechanisms 4 to enable the die-cutting blade 3 to be quickly disassembled. A mounting plate 5 is fixedly connected to the upper rear side of the machine body 1. A drive mechanism 6 is provided at the top left end of the mounting plate 5 to drive the die-cutting blade 3 to rotate. The quick-change mechanism 4 includes multiple cylindrical gears 41. The two bottom cylindrical gears 41 are fixedly connected to both ends of the die-cutting roller 2. The inner sides of the two top cylindrical gears 41 are provided with mounting grooves 42. The two ends of the die-cutting blade 3 are fixedly connected with positioning parts 43. The front sides of the two positioning parts 43 are provided with bolt holes 44. Fastening bolts 45 pass through the interior of the two bolt holes 44. The ends of the two fastening bolts 45 are threaded to the inner sides of the two mounting grooves 42. Specifically, multiple cylindrical gears 41 are respectively associated with the die-cutting roller 2 and the die-cutting blade 3. The two bottom cylindrical gears 41 rotate synchronously with the die-cutting roller 2, and the two top cylindrical gears 41 cooperate with the positioning parts 43 at both ends of the die-cutting blade 3 through the mounting groove 42. The positioning parts 43 are inserted into the mounting groove 42 and restrict the relative rotation between the die-cutting blade 3 and the cylindrical gears 41 through their own structure. After the bolt hole 44 on the front side of the positioning part 43 is aligned with the threaded hole on the inner side of the mounting groove 42, the fastening bolt 45 is passed through the bolt hole 44 and screwed into the inner side of the mounting groove 42; the threaded connection of the fastening bolt 45 generates axial pressure, which makes the positioning part 43 fit tightly against the inner wall of the mounting groove 42, thereby fixing the die-cutting blade 3 and the top cylindrical gear 41 into one piece. The drive mechanism 6 is installed on the top left end of the mounting plate 5 in the upper middle part of the rear side of the machine body 1, and its power output end is connected to the top cylindrical gear 41. When the drive mechanism 6 is running, it drives the top cylindrical gear 41 to rotate, and drives the die-cutting blade 3 to rotate synchronously through the fixedly connected positioning part 43. At the same time, the top cylindrical gear 41 meshes with the bottom cylindrical gear 41 to drive the die-cutting roller 2 to rotate, so that the die-cutting blade 3 and the die-cutting roller 2 maintain a preset speed ratio to ensure that the die-cutting operation is carried out accurately. When it is necessary to replace the die-cutting blade 3, rotate the fastening bolt 45 in the opposite direction to dislodge it from the mounting groove 42, thereby releasing the fixing relationship between the positioning part 43 and the top cylindrical gear 41; at this time, the die-cutting blade 3 can be directly pulled out along the axial direction, and the positioning part 43 will disengage from the mounting groove 42 along with the die-cutting blade 3, thus completing the disassembly of the old die-cutting blade 3. When installing the new die-cutting blade 3, align the positioning pieces 43 at both ends of the new die-cutting blade 3 with the mounting slots 42 of the top cylindrical gear 41 and insert them so that the bolt holes 44 are aligned with the threaded holes inside the mounting slots 42. Then screw in the fastening bolts 45 to complete the fixation. The entire replacement process does not require disassembling the drive mechanism 6 or other transmission components. The die-cutting blade 3 can be replaced simply by removing and installing the fastening bolts 45. The mating structure of the positioning component 43 and the mounting groove 42 ensures that the die-cutting blade 3 can maintain the preset axial and radial positions after each installation, avoiding the decrease in die-cutting accuracy due to installation deviation; the connection method of the fastening bolt 45 not only ensures the stability of the connection between the die-cutting blade 3 and the cylindrical gear 41, but also provides convenience for quick disassembly and assembly. The entire quick-change structure, through the positioning and engagement of the positioning component 43 and the mounting groove 42, the fixing action of the fastening bolt 45, and the transmission function of the cylindrical gear 41, achieves stable transmission of the die-cutting blade 3 while greatly simplifying the die-cutting blade 3 replacement process, shortening the replacement time, and improving the operating efficiency and practicality of the rotary die-cutting machine.

[0020] Reference Figures 1-5 The drive mechanism 6 includes a drive motor 61. A sprocket 62 is fixedly connected to the output end of the drive motor 61 and the left side of the top left cylindrical gear 41. A chain 63 is externally connected to the two sprockets 62. The drive motor 61 is fixedly mounted on the top left end of the mounting plate 5 via a shock-absorbing assembly 64. The shock-absorbing assembly 64 includes a shock-absorbing pad 641. The top of the shock-absorbing pad 641 is attached to the bottom of the drive motor 61. Fixing bolts 642 penetrate the four corners of the top of the shock-absorbing pad 641. The ends of the multiple fixing bolts 642 are threaded to the top of the mounting plate 5. The diameters of the output sprocket 62 and the driven sprocket 62 are 50mm and 100mm, respectively. Specifically, the drive motor 61 is mounted on the top left end of the mounting plate 5 via the shock absorption assembly 64. The sprocket 62 fixed at its output end is connected to the sprocket 62 on the left side of the top left cylindrical gear 41 via a chain 63. When the drive motor 61 is running, the sprocket 62 at its output end rotates, and the power is transmitted to the sprocket 62 on the side of the cylindrical gear 41 via the chain 63, which drives the top left cylindrical gear 41 to rotate synchronously. When the top left cylindrical gear 41 rotates, it drives the entire die-cutting blade 3 to rotate by meshing with the top right cylindrical gear 41. At the same time, the top cylindrical gear 41 meshes with the cylindrical gears 41 at both ends of the bottom die-cutting roller 2, transmitting power to the die-cutting roller 2, so that the die-cutting roller 2 and the die-cutting blade 3 maintain a preset speed match, ensuring the synchronous operation of the die and the roller during the die-cutting operation. The damping pad 641 of the damping component 64 is attached between the bottom of the drive motor 61 and the top of the mounting plate 5. When the drive motor 61 vibrates during operation, the damping pad 641 absorbs the vibration energy through its own deformation, reducing the transmission of vibration to the mounting plate 5 and the machine body 1. This vibration buffering effect can prevent other parts of the machine body 1 from becoming loose due to vibration, and at the same time prevent vibration from affecting the transmission stability of the sprocket 62 and the chain 63, and prevent the chain 63 from falling off or the sprocket 62 from wearing out. The fixing bolts 642 of the damping component 64 pass through the four corners of the damping pad 641, fixing the drive motor 61, the damping pad 641 and the mounting plate 5 into one unit; the threaded connection of the fixing bolts 642 ensures the stability of the installation position of the drive motor 61, prevents the drive motor 61 from being displaced due to vibration during operation, ensures the stability of the center distance between the output sprocket 62 and the side sprocket 62 of the cylindrical gear 41, and maintains the normal transmission tension of the chain 63; The difference in diameter between the output sprocket 62 and the driven sprocket 62 creates a preset speed ratio between them during transmission. This speed ratio allows for precise control of the speed relationship between the die-cutting blade 3 and the die-cutting roller 2, adapting to the needs of die-cutting products of different specifications and ensuring die-cutting accuracy. This method of adjusting the speed through the diameter ratio of the sprockets 62 eliminates the need for an additional speed change mechanism, simplifying the structure of the power transmission system. When the die-cutting blade 3 needs to be replaced, the drive motor 61 stops running and the chain 63 is in a static state. At this time, the die-cutting blade 3 can be pulled out by removing the fastening bolts 45 at both ends of the die-cutting blade 3 without disassembling the sprocket 62 and chain 63 of the drive mechanism 6. After the replacement is completed, the die-cutting blade 3 is reinstalled and the drive motor 61 restarts to restore power transmission through the original transmission path, ensuring that the replacement process does not affect the integrity of the drive system. The entire drive mechanism 6 achieves stable power transmission through sprocket 62 and chain 63. The shock absorption component 64 ensures the stability of the motor operation and the machine body 1. It is compatible with the disassembly and assembly design of the quick change mechanism 4, which not only meets the power requirements of the die-cutting operation, but also does not hinder the quick replacement of the die-cutting blade 3, thereby improving the overall operational reliability and efficiency of the rotary die-cutting machine.

[0021] Reference Figures 2-6A guide plate 7 is fixedly connected to the middle of the rear side of the machine body 1, and a guide groove 8 is provided on the top of the guide plate 7; the front side of the guide plate 7 adopts an arc surface design, and the distance between the arc surface and the rear side of the die-cutting roller 2 is set to 5mm-15mm, preferably 10mm; a controller 9 is fixedly connected to the left front side of the machine body 1, and the controller 9 is electrically connected to the drive motor 61; anti-slip pads 10 are fixedly connected to the left and right sides of the bottom of the machine body 1, and the bottom surface of the anti-slip pads 10 is made of rubber and adopts a corrugated design; Specifically, the guide plate 7 at the rear center of the machine body 1 provides guidance and limiting for the material during the die-cutting process. The guide groove 8 on its top corresponds to the feeding direction of the die-cutting roller 2. The material to be die-cut passes through the guide groove 8. The width of the guide groove 8 is adapted to the width of the material, limiting the left and right deviation of the material during the conveying process and ensuring that the material can be accurately conveyed to the die-cutting area between the die-cutting roller 2 and the die-cutting blade 3. The front side of the guide plate 7 adopts an arc surface design. The distance between the arc surface and the rear side of the die-cutting roller 2 is set to 5mm-15mm, preferably 10mm. The arc surface structure allows the material to smoothly transition when it approaches the die-cutting roller 2, avoiding jamming and wrinkling caused by unreasonable distance between the guide plate 7 and the roller or sharp structure. At the same time, the preferred distance of 10mm can prevent excessive friction between the material and the guide plate 7 and the die-cutting roller 2, reducing material wear and conveying resistance. The controller 9, located on the front left side of the machine body 1, is electrically connected to the drive motor 61. The operator sends running commands to the drive motor 61 through the controller 9 to control the start, stop, and speed adjustment of the drive motor 61. When it is necessary to adjust the die-cutting speed to adapt to different materials or die-cutting specifications, the speed parameters of the drive motor 61 are set through the controller 9. The drive motor 61 adjusts its output speed according to the parameters, and then changes the speed of the die-cutting blade 3 and the die-cutting roller 2 through the sprocket 62 and chain 63 to ensure that the die-cutting operation matches the material conveying speed. In addition, when the equipment experiences material blockage or transmission failure, the controller 9 can receive relevant detection signals and control the drive motor 61 to stop running, preventing the fault from escalating and ensuring the safety of the equipment and the operator. The anti-slip pads 10 on the left and right sides of the bottom of the machine body 1 provide stable support for the entire die-cutting machine. The bottom surface of the pads is made of rubber and has a corrugated design. The rubber material has elastic deformation capability, which can absorb the impact force generated by the vibration of the drive motor 61 and the rotation of the die-cutting roller 2 during the operation of the equipment, reduce the vibration transmission of the equipment to the ground, and reduce the impact of uneven ground on the stability of the equipment. The corrugated design increases the contact area between the bottom surface of the anti-slip pads 10 and the ground, improves friction, prevents the die-cutting machine from shifting due to vibration during operation, ensures the relative position stability of the die-cutting roller 2 and the die-cutting blade 3, and avoids the decrease in die-cutting accuracy due to equipment displacement. The guiding function of the guide plate 7 is connected with the die-cutting action of the die-cutting roller 2 and the die-cutting knife 3. The material conveyed by the guide groove 8 enters the die-cutting area accurately, and the die-cutting is completed in conjunction with the rotation of the die-cutting knife 3 and the roller. The arc structure and reasonable spacing ensure the continuity of material conveying. The controller 9 controls the drive motor 61, so that the die-cutting speed can be flexibly adjusted according to the operation requirements, while realizing the safety protection of the equipment. The stable support of the anti-slip foot pad 10 provides a foundation for the coordinated operation of various components of the equipment and reduces the impact of vibration on transmission and die-cutting accuracy.

[0022] Working Principle: Before the device is put into use, the initial installation of the die-cutting blade 3 needs to be completed: Align the positioning parts 43 at both ends of the die-cutting blade 3 with the mounting grooves 42 inside the two cylindrical gears 41 at the top, and insert them axially so that the positioning parts 43 are completely embedded in the mounting grooves 42; at this time, the positioning parts 43 restrict the relative rotation of the die-cutting blade 3 and the cylindrical gears 41 through their own structure, ensuring that the two are aligned in the circumferential position; then, pass the fastening bolts 45 through the bolt holes 44 on the front side of the positioning parts 43 and screw them into the threaded holes inside the mounting grooves 42. The threaded connection of the fastening bolts 45 generates axial pressure, making the positioning parts 43 fit tightly against the inner wall of the mounting grooves 42, thus aligning the die-cutting blade 3 with the top cylindrical gears 41. The cylindrical gear 41 is fixed as a whole; at the same time, it is confirmed that the bottom cylindrical gear 41 and the top cylindrical gear 41 at both ends of the die-cutting roller 2 are properly engaged to ensure smooth subsequent power transmission; then check the drive mechanism 6: ensure that the drive motor 61 is fixed to the top left end of the mounting plate 5 through the damping component 64, the damping pad 641 is attached between the bottom of the drive motor 61 and the mounting plate 5, and the fixing bolt 642 passes through the damping pad 641 and is tightened to make the drive motor 61 installed stably; confirm that the sprocket 62 at the output end of the drive motor 61 is connected to the sprocket 62 on the left side of the top left cylindrical gear 41 through the chain 63, and that the tension of the chain 63 is appropriate; After initial installation, the starting device enters the die-cutting operation stage: the operator sends a start command to the drive motor 61 through the controller 9 on the front left side of the machine body 1. The controller 9 is electrically connected to the drive motor 61 and can precisely control the start, stop and speed of the drive motor 61. When the drive motor 61 is running, the sprocket 62 at the output end with a diameter of 50mm rotates, and the power is transmitted through the chain 63 to the sprocket 62 with a diameter of 100mm on the side of the top left cylindrical gear 41. Due to the difference in diameter between the two sprockets 62, a preset speed ratio is formed, which drives the top left cylindrical gear 41 to rotate at an appropriate speed. When the top left cylindrical gear 41 rotates, it drives the entire die-cutting blade 3 to rotate synchronously through meshing with the top right cylindrical gear 41. At the same time, the top cylindrical gear 41 meshes with the bottom cylindrical gears 41 at both ends of the die-cutting roller 2, transmitting power to the die-cutting roller 2, so that the die-cutting roller 2 and the die-cutting blade 3 maintain a preset speed ratio, ensuring that the die and roller run synchronously during the die-cutting process and ensuring die-cutting accuracy. During the die-cutting operation, the material to be die-cut passes through the guide groove 8 at the top of the guide plate 7 at the rear center of the machine body 1. The width of the guide groove 8 is adapted to the width of the material, limiting the left and right deviation of the material and ensuring that the material is accurately conveyed to the die-cutting area between the die-cutting roller 2 and the die-cutting blade 3. The front side of the guide plate 7 adopts an arc surface design, and the distance between the arc surface and the rear side of the die-cutting roller 2 is set to 10mm. The arc surface structure allows the material to smoothly transition when it approaches the die-cutting roller 2, avoiding jamming and wrinkles. At the same time, the 10mm distance prevents the material from excessively rubbing against the guide plate 7 and the die-cutting roller 2, reducing material wear and conveying resistance. After the material enters the die-cutting area, the rotating die-cutting blade 3 cooperates with the die-cutting roller 2 to perform die-cutting processing on the material. The die-cut material is output from the other side of the device. During the operation of the drive motor 61, the damping component 64 plays a buffering role: the damping pad 641 absorbs the vibration energy generated by the drive motor 61 through its own deformation, reducing the transmission of vibration to the mounting plate 5 and the machine body 1, preventing other parts of the machine body 1 from becoming loose due to vibration, and preventing vibration from affecting the transmission stability of the sprocket 62 and chain 63, preventing the chain 63 from falling off or the sprocket 62 from wearing out; the anti-slip pads 10 on the left and right sides of the bottom of the machine body 1 provide stable support for the equipment. The rubber material on its bottom surface has elastic deformation capability, which can absorb the impact force generated by the vibration of the drive motor 61 and the rotation of the die-cutting roller 2 during the operation of the equipment, reducing the impact of uneven ground on the stability of the equipment; the corrugated design on the bottom surface of the anti-slip pad 10 increases the contact area with the ground, improves the friction, prevents the equipment from shifting due to vibration, ensures the relative position stability of the die-cutting roller 2 and the die-cutting blade 3, and avoids a decrease in die-cutting accuracy; When it is necessary to replace the die-cutting blade 3 with a different specification, first, control the drive motor 61 to stop running via the controller 9, so that the die-cutting blade 3 and the die-cutting roller 2 stop rotating; then, the operator rotates the fastening bolts 45 on the positioning parts 43 at both ends of the die-cutting blade 3 in the opposite direction, so that the fastening bolts 45 are dislodged from the mounting groove 42, and the fixing relationship between the positioning parts 43 and the top cylindrical gear 41 is released; at this time, there is no need to disassemble the sprocket 62 and chain 63 of the drive mechanism 6, and the old die-cutting blade 3 is directly pulled out along the axial direction, and the positioning parts 43 are dislodged from the mounting groove 42 along with the die-cutting blade 3, thus completing the disassembly of the old blade; when installing the new die-cutting blade 3, repeat the initial installation steps: align the positioning parts 43 at both ends of the new die-cutting blade 3 with the mounting groove 42 and insert them, so that the bolt holes 44 are aligned with the threaded holes inside the mounting groove 42, and tighten the fastening bolts 45 to fix it; after the replacement is completed, restart the drive motor 61 via the controller 9, and the device can resume die-cutting operation; The entire device enables convenient disassembly and assembly of the die-cutting blade 3 through the quick-change mechanism 4, the drive mechanism 6 provides stable power and controls the speed through the diameter ratio of the sprocket 62, the guide plate 7 ensures accurate material delivery, the controller 9 realizes intelligent control, and the anti-slip pads 10 and the shock-absorbing components 64 ensure stable operation of the equipment. The coordinated operation of all components ensures accurate and efficient die-cutting operations, greatly simplifies the die-cutting blade 3 replacement process, and improves the operating efficiency and practicality of the rotary die-cutting machine.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-change die-cutting structure for a rotary die-cutting machine, comprising a machine body (1), a die-cutting roller (2) and a die-cutting blade (3), wherein the die-cutting roller (2) is rotatably connected to the lower inner part of the machine body (1), and the die-cutting blade (3) is rotatably connected to the upper inner part of the machine body (1); Both ends of the die-cutting roller (2) and the die-cutting blade (3) are provided with quick-change mechanisms (4) to enable the die-cutting blade (3) to be quickly disassembled. A mounting plate (5) is fixedly connected to the upper rear side of the body (1), and a driving mechanism (6) is provided at the top left end of the mounting plate (5) to drive the die-cutting knife (3) to rotate. Its features are, The quick-change mechanism (4) includes multiple cylindrical gears (41). The two bottom cylindrical gears (41) are fixedly connected to both ends of the die-cutting roller (2). The inner sides of the two top cylindrical gears (41) are provided with mounting grooves (42). The two ends of the die-cutting blade (3) are fixedly connected with positioning parts (43). The front sides of the two positioning parts (43) are provided with bolt holes (44). Fastening bolts (45) pass through the interior of the two bolt holes (44). The ends of the two fastening bolts (45) are threaded to the inner sides of the two mounting grooves (42).

2. The quick-change die-cutting structure of the rotary die-cutting machine according to claim 1, characterized in that: The drive mechanism (6) includes a drive motor (61). The output end of the drive motor (61) and the left side of the top left cylindrical gear (41) are both fixedly connected to sprockets (62). The two sprockets (62) are externally connected to a chain (63). The drive motor (61) is fixedly installed on the top left end of the mounting plate (5) through a shock-absorbing component (64).

3. The quick-change die-cutting structure of the rotary die-cutting machine according to claim 2, characterized in that: The shock-absorbing assembly (64) includes a shock-absorbing pad (641), the top of which is attached to the bottom of the drive motor (61). Each of the four corners of the top of the shock-absorbing pad (641) is pierced by a fixing bolt (642), and the ends of the fixing bolts (642) are threaded to the top of the mounting plate (5).

4. The quick-change die-cutting structure of the rotary die-cutting machine according to claim 1, characterized in that: A guide plate (7) is fixedly connected to the middle of the rear side of the body (1), and a guide groove (8) is provided on the top of the guide plate (7).

5. The quick-change die-cutting structure of the rotary die-cutting machine according to claim 4, characterized in that: The front side of the guide plate (7) is designed with an arc surface, and the distance between the arc surface and the rear side of the die-cutting roller (2) is set to 5mm-15mm.

6. The quick-change die-cutting structure of the rotary die-cutting machine according to claim 1, characterized in that: A controller (9) is fixedly connected to the front left end of the body (1), and the controller (9) is electrically connected to the drive motor (61).

7. The quick-change die-cutting structure of the rotary die-cutting machine according to claim 1, characterized in that: The bottom left and right sides of the body (1) are fixedly connected with anti-slip pads (10). The bottom surface of the anti-slip pads (10) is made of rubber and has a corrugated design.

8. The quick-change die-cutting structure of the rotary die-cutting machine according to claim 2, characterized in that: The diameters of the output sprocket (62) and the driven sprocket (62) are 50 mm and 100 mm, respectively.

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