A printing die cutter

Abstract

The utility model discloses a printing die -cutting machine, including frame, the upper side fixedly connected with cutting plate of frame, still include die -cutting mechanism, die -cutting mechanism, it includes die -cutting frame, guide slide column, back type frame, die -cutting knife, cam upper half, cam lower half and slide column, the middle part of frame is fixedly connected in die -cutting frame, and the upper and lower inner wall between the left and right two ends of die -cutting frame all are fixedly connected with guide slide column, and the outer arc surface between two guide slide columns is slidably connected with back type frame, and the lower end of back type frame is located in the inside of frame, and the front and rear side wall of frame all are set up with the hole of the lower end of back type frame, the die -cutting knife is installed in the top wall of die -cutting frame, the cam upper half is set up in the inside of frame, and this printing die -cutting machine, through the combination formula and adjustable cam mode, has solved the cumbersome problem of replacing spare parts adjustment of existing printing die -cutting machine, and has improved the equipment adaptability.

Description

Technical Field

[0001] This utility model relates to the field of packaging film printing technology, specifically a printing and die-cutting machine. Background Technology

[0002] In the current context of rapid development in the global packaging industry, packaging film, as a core carrier for product protection and brand display in the food, daily chemical, and electronics industries, is experiencing a continuous increase in market demand. According to industry data, the annual consumption of printed packaging film in the food packaging sector alone accounts for more than 40% of the total demand for packaging film. In the production process of packaging film, the die-cutting process after printing is a key link that determines the product forming accuracy and production efficiency. Only by cutting the continuously printed packaging film into individual packaging units that meet the specifications through die-cutting equipment can the needs of subsequent sealing, filling and other assembly line operations be met. As downstream industries continue to increase their requirements for packaging refinement and personalization, and as production lines upgrade their automation level, the market has raised higher standards for the stability, adaptability and processing accuracy of printing and die-cutting equipment, driving the die-cutting technology to iterate from traditional manual operation to intelligent and continuous operation. Among them, cam-driven die-cutting machines are widely used in medium and high-speed production lines due to their stable transmission and ability to achieve continuous cutting. Their core principle is that the rotation of the cam drives the driven part (the bracket connecting the die-cutting blade) to reciprocate, thereby controlling the cutting rhythm and stroke of the die-cutting blade. Currently, the mainstream printing and die-cutting machines in the industry mainly consist of a frame, a feeding mechanism, a die-cutting mechanism, and a receiving mechanism. Their workflow is roughly as follows: the material is stably pulled to the cutting area by the traction device, and then the drive component in the die-cutting mechanism drives the die-cutting blade to move up and down, which works with the cutting plate below to punch and cut the packaging film. Finally, the receiving mechanism collects or transports the cut individual packaging units to the next process. However, existing printing and die-cutting machines still have some problems in practical applications. The cutting interval of the die-cutting blade is difficult to adjust. Most machines have an integrated cam assembly with a fixed protrusion height. If it is necessary to adapt to the cutting needs of packaging films of different sizes (such as small snack packaging and large appliance protective film), the entire cam assembly needs to be disassembled and replaced. This is not only cumbersome and time-consuming, but also requires professional personnel for debugging, which seriously affects the efficiency of changing parts on the production line. Therefore, we propose a printing and die-cutting machine. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a printing and die-cutting machine. By using a combined and adjustable cam method, it solves the problem of cumbersome parts replacement and adjustment in existing printing and die-cutting machines, and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a printing die-cutting machine, including a frame, a cutting plate fixedly connected to the upper side of the frame, and a die-cutting mechanism; Die-cutting mechanism: It includes a die-cutting frame, guide slides, a return frame, a die-cutting blade, an upper half of a cam, a lower half of a cam, and slides. The die-cutting frame is fixedly connected to the middle of the machine frame. Guide slides are fixedly connected between the upper and lower inner walls of the left and right ends of the die-cutting frame. A return frame is slidably connected between the outer arc surfaces of the two guide slides. The lower end of the return frame is located inside the machine frame. The front and rear side walls of the machine frame are provided with clearance holes corresponding to the lower end of the return frame. The die-cutting blade is installed on the top wall of the die-cutting frame. The upper half of the cam is located inside the machine frame. The lower half of the cam is slidably connected to the guide hole at the right end of the upper half of the cam through a slide. Both the lower half and the upper half of the cam are installed in conjunction with the lower side of the lower end of the return frame. The combination and adjustable cam method solves the problem of cumbersome parts replacement and adjustment in existing printing die-cutting machines, and improves the adaptability of the equipment.

[0005] Furthermore, a controller is provided on the front side of the frame, and the input terminal of the controller is electrically connected to an external power supply for stable control.

[0006] Furthermore, the die-cutting mechanism also includes a stud. A rotating shaft is rotatably connected to the left end of the lower half of the cam. The stud is fixedly connected to the upper end face of the rotating shaft. The upper end of the stud is threadedly connected to a threaded hole on the left end of the lower side of the upper half of the cam. A tightening screw is threadedly connected to the rear side of the left end of the lower half of the cam. The front end of the tightening screw contacts the rear end of the outer arc surface of the rotating shaft. The cooperation of the stud, the rotating shaft, and the tightening screw enables precise adjustment and locking of the relative positions of the upper half and the lower half of the cam. This ensures that the cutting interval can be finely adjusted and prevents the cam from shifting during equipment operation, thereby improving adjustment stability and cutting accuracy.

[0007] Furthermore, the die-cutting mechanism also includes a counterweight block, which is installed on the upper side of the die-cutting frame. The counterweight block on the upper side of the die-cutting frame can increase the pressure of the return frame resetting downward, ensuring that the die-cutting blade quickly and smoothly fits the cutting plate to complete the cutting, and avoiding cut defects caused by resetting delay.

[0008] Furthermore, the outer arc surface of the slide column is provided with scale lines, which provide a direct quantitative basis for the adjustment of the relative displacement of the cam.

[0009] Furthermore, a mounting plate is fixedly connected between the left and right inner walls of the frame. The upper half of the cam is rotatably connected to the rear side of the mounting plate via a rotating shaft. A motor is mounted on the front side of the mounting plate. The output shaft of the motor is fixedly connected to the center of the front end face of the rotating shaft. The input end of the motor is electrically connected to the output end of the controller for stable driving.

[0010] Furthermore, a feed roller is rotatably connected to the front end of the frame for placing external materials.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This printing and die-cutting machine has the following advantages: By coordinating the die-cutting frame, guide slide, and return frame, and utilizing the guide slide to guide the return frame's sliding motion, the die-cutting blade can be stably moved up and down without deviation, ensuring precise die-cutting position and improving die-cutting quality. The combined cam structure, consisting of the upper and lower halves of the cam, provides reliable power for the return frame's up and down movement, making the die-cutting action continuous and efficient, meeting the needs of continuous production. Simultaneously, the mechanism includes an adjustment assembly with studs, a rotating shaft, and a tightening screw. Loosening the tightening screw and rotating the shaft allows the upper and lower halves of the cam to slide relative to each other through the threaded connection between the stud and the threaded hole. The scale lines on the slide allow for precise adjustment of the total cam protrusion height, thereby changing the upward stroke of the return frame and the die-cutting blade, flexibly adjusting the cutting interval time to adapt to the die-cutting needs of different sized printed materials (such as small-sized packaging and large-sized labels). This eliminates the need for complex adjustment mechanisms, improving the equipment's versatility. Furthermore, the counterweight installed on the die-cutting frame assists the return frame in quickly resetting the die-cutting blade downwards when the cam profile falls back, ensuring a stable die-cutting rhythm. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram showing a cross-section of the left side wall of this utility model; Figure 3 This is a schematic diagram of the rear end structure of this utility model; Figure 4 This is a schematic diagram of a partial cross-section of the upper half of the cam of this utility model.

[0013] In the diagram: 1. Frame, 2. Die-cutting mechanism, 21. Die-cutting frame, 22. Guide slide column, 23. Return frame, 24. Die-cutting blade, 25. Counterweight, 26. Upper half of cam, 261. Guide hole, 262. Threaded hole, 27. Lower half of cam, 28. Slide column, 29. Stud, 3. Rotating shaft, 4. Tightening screw, 5. Mounting plate, 6. Rotating shaft, 7. Motor, 8. Scale line, 9. Cutting plate, 10. Feeding roller, 11. Controller. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0015] Please see Figure 1-4 This embodiment provides a technical solution: a printing die-cutting machine, including a frame 1 (the left side wall of the frame 1 is connected to an adjusting door via a hinge, and a closing lock is provided between the end of the adjusting door away from the hinge and the left side wall of the frame 1). The closing lock is a mortise lock commonly used in the prior art. The mortise lock can be selected as a single-head lock or a double-head lock as needed. The single-head lock only has one pin tumbler cylinder installed on the outside of the lock body. The side with the cylinder needs to be opened and locked with a key, while the other side is opened and locked by turning a knob. The double-head lock... The machine has a tumbler lock on each of the indoor and outdoor sides of the lock body (both sides require a key to open or lock). The upper side of the frame 1 is fixedly connected to the cutting plate 9. The front side of the frame 1 is equipped with a controller 11. The input end of the controller 11 is electrically connected to an external power source. The front end of the frame 1 is rotatably connected to the feeding roller 10. The rolled material is wrapped on the feeding roller 10. When the equipment is running, the feeding roller 10 rotates synchronously with the material being pulled by the external traction equipment, and the material is uniformly conveyed to the top of the cutting plate 9. The machine also includes a die-cutting mechanism 2. Die-cutting mechanism 2 includes a die-cutting frame 21, guide slides 22, a return frame 23, a die-cutting blade 24, an upper cam 26, a lower cam 27, and slides 28. The die-cutting frame 21 is fixedly connected to the middle of the machine frame 1. Guide slides 22 are fixedly connected between the upper and lower inner walls of the left and right ends of the die-cutting frame 21. The return frame 23 is slidably connected between the outer arc surfaces of the two guide slides 22. The die-cutting mechanism 2 also includes a counterweight 25, which is installed on the upper side of the die-cutting frame 21. The lower end of the return frame 23 is located inside the machine frame 1. The front and rear side walls of the machine frame 1 are both provided with the lower end of the return frame 23. The die-cutting blade 24 is installed on the top wall of the die-cutting frame 21 via a corresponding clearance hole. The upper half of the cam 26 is located inside the machine frame 1. The guide hole 261 at the right end of the upper half of the cam 26 is slidably connected to the lower half of the cam 27 via a sliding column 28. The outer arc surface of the sliding column 28 has a scale line 8 on its rear side. Both the lower half of the cam 27 and the upper half of the cam 26 are fitted with the lower side of the lower end of the return frame 23 (when the return frame 23 descends to its lowest point, there is still a gap between the lower end surface of the return frame 23 and the outer arc surface of the upper half of the cam 26). The machine frame 1 A mounting plate 5 is fixedly connected between the left and right inner walls. The upper half of the cam 26 is rotatably connected to the rear side of the mounting plate 5 via a rotating shaft 6. A motor 7 is mounted on the front side of the mounting plate 5. The output shaft of the motor 7 is fixedly connected to the center of the front end face of the rotating shaft 6. The input end of the motor 7 is electrically connected to the output end of the controller 11. The operator starts the equipment through the controller 11 on the front side of the frame 1. The controller 11 outputs an electrical signal to the motor 7 on the front side of the mounting plate 5. After the motor 7 is powered on, it drives the rotating shaft 6 to rotate, thereby driving the "combined cam structure" composed of the upper half of the cam 26 and the lower half of the cam 27 to rotate synchronously. To provide a continuous and stable rotational driving force for subsequent die-cutting operations, both the upper half 26 and the lower half 27 of the cam are in contact with the lower side of the return frame 23 (forming a "cam-follower" transmission structure). When the combined cam rotates, the "protrusion height" of its profile will push the return frame 23 to slide up and down along the guide slide column 22. When the cam profile protrudes, the return frame 23 is pushed upward, driving the die-cutting blade 24 to rise. When the cam profile falls back, the return frame 23 returns to its original position under its own weight and the pressure of the counterweight 25. The die-cutting blade 24 descends to the cutting plate 9 to complete the cutting and is used for die-cutting. The die-cutting mechanism 2 also includes a stud 29. A rotating shaft 3 is rotatably connected to the left end of the lower cam half 27. The stud 29 is fixedly connected to the upper end face of the rotating shaft 3. The upper end of the stud 29 is threadedly connected to a threaded hole 262 opened at the left end of the lower side of the upper cam half 26. (A mounting hole is opened inside the left end of the lower cam half 27, and the rotating shaft 3 is rotatably connected to the inside of the mounting hole via a sealed bearing. The stud 29 is located at the upper end of the sealed bearing. A bellows is provided between the upper side of the lower cam half 27 and the lower side of the upper cam half 26. The stud 29 is located inside the bellows. The bellows provides external protection for the stud 29 and ensures the lubrication and sealing of the stud 29.) The lower half of the cam 27 has a screw 4 threadedly connected to the rear left end. The front end of the screw 4 contacts the rear end of the outer arc surface of the rotating shaft 3. The cut material is collected manually by the worker. If it is necessary to change the rising distance (i.e., the cutting interval) of the die-cutting blade 24, first loosen the screw 4 on the rear left end of the lower half of the cam 27 (the screw 4 is originally used to lock the rotating shaft 3), and then rotate the rotating shaft 3. The stud 29 fixed at the upper end of the rotating shaft 3 is threadedly connected to the threaded hole 262 on the lower side of the upper half of the cam 26. The rotation of the stud 29 will be converted into "relative sliding between the upper half of the cam 26 and the lower half of the cam 27" (the lower half of the cam 27 is connected to the cam 27 by the sliding post 28). The guide hole 261 of the upper half of the wheel 26 is slidably connected to avoid relative rotation. The scale line 8 on the rear side of the outer arc surface of the slide column 28 can intuitively display the relative displacement between the upper half of the cam 26 and the lower half of the cam 27. After the operator adjusts the scale according to the required rising distance, the tightening screw 4 is tightened to lock the rotating shaft 3. At this time, the "total convex height" of the combined cam (convex height of the upper half of the cam 26 + relative convex height of the lower half of the cam 27) is fixed, and the rising stroke of the return frame 23 (i.e., the rising distance of the die-cutting blade 24) is also fixed. When the rising stroke of the return frame 23 increases, the die-cutting blade 24 rises higher from the "cutting plate 9". Between two cuts The "time window" or "material conveying space" of the die-cutting blade 24 (rising and resetting) expands accordingly, and the corresponding cutting interval (the distance between adjacent cuts on the material) increases. Conversely, when the rising stroke of the return frame 23 decreases, the rising height of the die-cutting blade 24 decreases, and the cutting interval shrinks. This adjustment function can adapt to the die-cutting requirements of different specifications of printed materials (such as packaging film and cardboard). For example, when producing small-sized packaging, the cutting interval needs to be reduced to improve material utilization. When producing large-sized labels, the cutting interval needs to be increased to match the finished product size. No complicated adjustment mechanism is required. It can be achieved simply by adjusting the rising stroke of the return frame 23, thus improving the versatility of the equipment.

[0016] The working principle of the printing die-cutting machine provided by this utility model is as follows: The operator starts the equipment through the controller 11 on the front side of the frame 1. The controller 11 outputs an electrical signal to the motor 7 on the front side of the mounting plate 5. After the motor 7 is powered on, it drives the rotating shaft 6 to rotate, which in turn drives the "combined cam structure" composed of the upper half cam 26 and the lower half cam 27 to rotate synchronously, providing a continuous and stable rotational driving force for the subsequent die-cutting action. Both the upper half cam 26 and the lower half cam 27 are in contact with the lower side of the return frame 23 (which is a "cam-follower" transmission structure). When the combined cam rotates, the "protrusion height" of its contour will push the return frame 23 to slide up and down along the guide slide column 22. When the cam contour protrudes, the return frame 23 is pushed upward, driving the die-cutting blade 24 to rise. When the cam profile falls back, the return frame 23 resets downwards under its own weight and the pressure of the counterweight 25. The die-cutting blade 24 descends to the cutting plate 9 to complete the cutting (a limit block is fixedly connected to the upper side of the frame 1, which limits the lowest position of the return frame 23, so that the blade of the die-cutting blade 24 can contact the upper side of the cutting plate 9 but will not make excessive contact and cause collision, thus damaging the blade of the die-cutting blade 24). The cut material is collected manually by the worker. If it is necessary to change the rising distance of the die-cutting blade 24 (i.e., the cutting interval), first loosen the tightening screw 4 on the rear left side of the lower half of the cam 27 (the tightening screw 4 was originally used to lock the rotating shaft 3), and then rotate the rotating shaft 3. The stud 29 fixed at the upper end of the rotating shaft 3 is threadedly connected to the threaded hole 262 on the lower side of the upper half of the cam 26. The rotation of 29 will be converted into "relative sliding between the upper half of cam 26 and the lower half of cam 27" (the lower half of cam 27 is slidably connected to the guide hole 261 of the upper half of cam 26 through the slide column 28 to avoid relative rotation). The scale line 8 on the rear side of the outer arc surface of the slide column 28 can intuitively display the relative displacement between the upper half of cam 26 and the lower half of cam 27. After the operator adjusts the scale according to the required rising distance, he tightens the top screw 4 to lock the rotating shaft 3. At this time, the "total convex height" of the combined cam (convex height of the upper half of cam 26 + relative convex height of the lower half of cam 27) is fixed, and the rising stroke of the return frame 23 (i.e., the rising distance of the die-cutting blade 24) is also fixed. When the rising stroke of the return frame 23 increases, the die-cutting blade 24 rises higher from the "cutting plate 9", and the two cuts The "time window" or "material conveying space" of the die-cutting blade 24 (rising and resetting) expands accordingly, correspondingly increasing the cutting interval (the distance between adjacent cuts on the material). Conversely, when the rising stroke of the return frame 23 decreases, the rising height of the die-cutting blade 24 decreases, and the cutting interval shrinks. This adjustment function can adapt to the die-cutting needs of different specifications of printed materials (such as packaging film and cardboard). For example, when producing small-sized packaging, the cutting interval needs to be reduced to improve material utilization; when producing large-sized labels, the cutting interval needs to be increased to match the finished product size. No complex adjustment mechanism is required; this can be achieved simply by adjusting the rising stroke of the return frame 23, improving the equipment's versatility. The rolled material is wrapped on the feeding roller 10. When the equipment is running, the feeding roller 10 rotates synchronously with the material as it is pulled by the external traction equipment.The material is conveyed at a uniform speed above the cutting plate 9.

[0017] It is worth noting that the usable signal of the motor 7 disclosed in the above embodiments is that the controller 11 is provided with a control button corresponding to the motor 7 and used to control its switching.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A printing die-cutting machine, comprising a frame (1), wherein a cutting plate (9) is fixedly connected to the upper side of the frame (1), characterized in that: It also includes a die-cutting mechanism (2); Die-cutting mechanism (2): It includes a die-cutting frame (21), guide slide column (22), return frame (23), die-cutting blade (24), upper half of cam (26), lower half of cam (27) and slide column (28). The die-cutting frame (21) is fixedly connected to the middle of the machine frame (1). Guide slide column (22) is fixedly connected between the upper and lower inner walls of the left and right ends of the die-cutting frame (21). Return frame (23) is slidably connected between the outer arc surfaces of the two guide slide columns (22). The lower end of the return frame (23) is located at the machine. Inside the frame (1), the front and rear side walls of the frame (1) are provided with clearance holes corresponding to the lower end of the return frame (23). The die-cutting blade (24) is installed on the top wall of the die-cutting frame (21). The upper half of the cam (26) is located inside the frame (1). The guide hole (261) opened at the right end of the upper half of the cam (26) is slidably connected to the lower half of the cam (27) through the sliding column (28). The lower half of the cam (27) and the upper half of the cam (26) are both installed in conjunction with the lower side of the lower end of the return frame (23).

2. The printing and die-cutting machine according to claim 1, characterized in that: The front side of the frame (1) is provided with a controller (11), and the input end of the controller (11) is electrically connected to an external power source.

3. A printing and die-cutting machine according to claim 1, characterized in that: The die-cutting mechanism (2) also includes a stud (29). The lower half of the cam (27) is rotatably connected to a rotating shaft (3) inside. The stud (29) is fixedly connected to the upper end face of the rotating shaft (3). The upper end of the stud (29) is threadedly connected to the threaded hole (262) opened on the lower side left of the upper half of the cam (26). The lower half of the cam (27) is threadedly connected to a tightening screw (4) on the rear side of the left end. The front end of the tightening screw (4) contacts the rear end of the outer arc surface of the rotating shaft (3).

4. A printing and die-cutting machine according to claim 1, characterized in that: The die-cutting mechanism (2) also includes a counterweight (25), which is mounted on the upper side of the die-cutting frame (21).

5. A printing and die-cutting machine according to claim 1, characterized in that: The sliding column (28) has a scale line (8) on the rear side of its outer arc surface.

6. A printing and die-cutting machine according to claim 2, characterized in that: A mounting plate (5) is fixedly connected between the left and right inner walls of the frame (1). The upper half (26) of the cam is rotatably connected to the rear side of the mounting plate (5) via a rotating shaft (6). A motor (7) is mounted on the front side of the mounting plate (5). The output shaft of the motor (7) is fixedly connected to the center of the front end face of the rotating shaft (6). The input end of the motor (7) is electrically connected to the output end of the controller (11).

7. A printing and die-cutting machine according to claim 1, characterized in that: The front end of the frame (1) is rotatably connected to the feed roller (10).

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