A tear line cutting mechanism for a printing press

Abstract

The application discloses a kind of tear line cutting mechanism for printing machine, belong to printing machinery field, it includes positioning frame and frame, the top of the positioning frame is equipped with conveyor belt, the outer side of the positioning frame is equipped with servo motor for driving conveyor belt operation, the inner wall of the frame is fixedly connected with one end of reset spring, the other end of the reset spring is fixedly connected with ring, the top of the ring is fixedly connected with the power output shaft of electric push rod, the inner wall of the ring is rotatably connected with rotating rod, the power output shaft of the stepper motor is fixedly connected on one side of the rotating rod, the outer edge of the rotating rod is fixedly installed with tool holder, two inclined tool grooves are formed symmetrically on the outer side of the tool holder;By setting hard alloy blade service life than traditional blade 5-8 times longer, greatly reduce the frequency of blade replacement, and by setting electric push rod and ring, it is convenient to control the depth of cutting, ensure that cutting quality is stable, avoid producing burr.

Description

Technical Field

[0001] This application relates to the field of printing machinery technology, and in particular to an easy-tear wire cutting mechanism for printing presses. Background Technology

[0002] In the packaging and printing industry, easy-tear lines are widely used in various food packaging, pharmaceutical packaging, and daily chemical product packaging to make it easier for consumers to open the packaging.

[0003] While existing mechanical blade cutting technology is faster, the blades wear out quickly, leading to unstable cutting quality. Frequent blade replacements increase production costs, and paper dust is easily generated during the cutting process, polluting the working environment. Therefore, this application proposes an easy-tear line cutting mechanism for printing presses. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides an easy-tear wire cutting mechanism for printing presses, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: an easy-tear wire cutting mechanism for a printing machine, comprising a positioning frame and a frame. A conveyor belt is mounted on the top of the positioning frame, and a servo motor for driving the conveyor belt is mounted on the outer side of the positioning frame. One end of a return spring is fixedly connected to the inner wall of the frame, and a ring is fixedly connected to the other end of the return spring. The power output shaft of an electric push rod is fixedly connected to the top of the ring. A first rotating rod is rotatably connected to the inner wall of the ring. A stepper motor's power output shaft is fixedly connected to one side of the first rotating rod. A blade holder is fixedly mounted on the outer edge of the rotating rod. Two oblique blade grooves are symmetrically opened on the outer side of the blade holder. A straight blade groove is opened on the inner wall of the blade holder, and carbide blades are inserted into the inner walls of the two oblique blade grooves.

[0006] In a preferred embodiment, two side plates are symmetrically fixedly installed on the outer side of the positioning frame, and a frame is installed on the top of each side plate.

[0007] By adopting the above technical solution, it is possible to support the two frames and ensure the stability of the two frames when they are set outside the positioning frame.

[0008] In a preferred embodiment, a bracket is fixedly installed on the outer side of the frame, the bottom of the bracket is fixedly connected to the top of the electric push rod, and the output shaft of the electric push rod is slidably connected to the inner wall of the frame.

[0009] By adopting the above technical solution, it can be used to position the electric linear actuator, ensuring the stability of the electric linear actuator during operation and preventing it from easily shaking or even shifting its position.

[0010] In a preferred embodiment, the outer wall of the frame has two protrusions, a guide frame is fixedly installed on the outer side of the stepper motor, and two protrusions are installed on the side of the guide frame near the protrusions, and the two protrusions are adapted to slide and connect to the inner wall of the two protrusions.

[0011] By adopting the above technical solution, the guide frame can be limited and guided, ensuring that the guide frame can move stably up and down to achieve position adjustment. This further ensures the stability of the guide frame when moving up and down, and also ensures the stability of the stepper motor during operation.

[0012] In a preferred embodiment, studs are inserted into the inner walls of the tool holder and the two carbide cutting tools. Two nuts are symmetrically threaded onto the outer edge of the studs, and both nuts are in contact with the outer wall of the tool holder. A second rotating rod is fixedly connected to the outer edge of the nuts.

[0013] By adopting the above technical solution, two carbide cutting tools can be stably installed on the inner wall of two oblique cutting grooves using studs, ensuring the stability of the carbide cutting tools. Furthermore, the second rotating rod can improve the user's convenience when turning the nut, eliminating the need for other tools.

[0014] In a preferred embodiment, there are two of each of the frame, return spring, ring, electric push rod, and bracket, and the two frames, return spring, ring, electric push rod, and bracket are symmetrically arranged on both sides of the conveyor belt. Both ends of the first rotating rod are rotatably connected to the inner walls of the two rings.

[0015] By adopting the above technical solution, the two sides of the first rotating rod can be moved stably up and down synchronously to achieve position movement, and the elastic force of the return spring can drive the two rings to quickly return to their original positions.

[0016] In a preferred embodiment, a sliding groove is provided on the inner wall of the frame near the stepper motor, and the end of the first rotating rod near the stepper motor is slidably connected to the inner wall of the sliding groove.

[0017] By adopting the above technical solution, it is possible to ensure that the first rotating rod can move up and down on the inner wall of the sliding groove, thereby ensuring that the rotating rod will not interfere with the frame when sliding.

[0018] The beneficial effects of this application are: This easy-tear wire cutting mechanism for printing presses features carbide blades with a lifespan 5-8 times longer than traditional blades, significantly reducing blade replacement frequency. Furthermore, the electric push rod and ring facilitate control of the cutting depth, ensuring stable cutting quality and preventing burrs.

[0019] This easy-tear line cutting mechanism for printing machines uses a rotating rod to rotate a nut away from the outer edge of a stud, thereby removing the stud from the inner wall of the cutter holder and the carbide blade. This allows for easy replacement of the carbide blade and facilitates the removal of two carbide blades, with one of them installed on the inner wall of a straight cutter groove. This enables the cutting of easy-tear lines of various specifications and shapes to meet the needs of different products. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the cross-sectional structure of the frame in this application; Figure 3 This is a schematic diagram of the unfolded structure of this application; Figure 4 For the purposes of this application Figure 3 Enlarged structural diagram at point A in the middle.

[0021] The following are the labels in the diagram: 1. Positioning frame; 2. Conveyor belt; 3. Servo motor; 4. Side plate; 5. Frame; 6. Return spring; 7. Ring; 8. Electric push rod; 9. Bracket; 10. Groove; 11. Guide frame; 12. Stepper motor; 13. First rotating rod; 14. Tool holder; 15. Angled tool groove; 16. Straight tool groove; 17. Carbide insert; 18. Stud; 19. Nut; 20. Second rotating rod. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0023] Reference Figure 1-4 A tear-off wire cutting mechanism for a printing press includes a positioning frame 1 and a frame 5. A conveyor belt 2 is mounted on the top of the positioning frame 1, and a servo motor 3 for driving the conveyor belt 2 is mounted on the outer side of the positioning frame 1. One end of a return spring 6 is fixedly connected to the inner wall of the frame 5, and a ring 7 is fixedly connected to the other end of the return spring 6. The power output shaft of an electric push rod 8 is fixedly connected to the top of the ring 7. A first rotating rod 13 is rotatably connected to the inner wall of the ring 7. The power output shaft of a stepper motor 12 is fixedly connected to one side of the first rotating rod 13. A blade holder 14 is fixedly mounted on the outer edge of the first rotating rod 13. Two oblique blade grooves 15 are symmetrically opened on the outer side of the blade holder 14. A straight blade groove 16 is opened on the inner wall of the blade holder 14, and carbide blades 17 are inserted into the inner walls of the two oblique blade grooves 15.

[0024] See Figure 2Two side plates 4 are symmetrically fixedly installed on the outer side of the positioning frame 1, and a frame 5 is installed on the top of each side plate 4, so that the two frames 5 can be used to support the two frames 5 and ensure the stability of the two frames 5 when they are set outside the positioning frame 1.

[0025] See Figure 2 A bracket 9 is fixedly installed on the outside of the frame 5. The bottom of the bracket 9 is fixedly connected to the top of the electric push rod 8. The output shaft of the electric push rod 8 is slidably connected to the inner wall of the frame 5, which can be used to position the electric push rod 8, ensuring the stability of the electric push rod 8 during operation and preventing it from easily shaking or even shifting its position.

[0026] See Figure 2 The outer wall of the frame 5 has two protrusions 10. A guide frame 11 is fixedly installed on the outer side of the stepper motor 12. Two protrusions are installed on the side of the guide frame 11 near the protrusions 10. The two protrusions are adapted to slide and connect to the inner wall of the two protrusions 10, so that the guide frame 11 can play a limiting and guiding role, ensuring that the guide frame 11 can move up and down stably to achieve position adjustment. This further ensures the stability of the guide frame 11 when moving up and down, and also ensures the stability of the stepper motor 12 during operation.

[0027] See Figure 4 The inner walls of the tool holder 14 and the two carbide inserts 17 are all fitted with studs 18. The outer edges of the studs 18 are symmetrically threaded with two nuts 19, and both nuts 19 fit against the outer wall of the tool holder 14. The outer edges of the nuts 19 are fixedly connected with a second rotating rod 20, so that the two carbide inserts 17 can be stably installed on the inner walls of the two oblique tool slots 15 using the studs 18, ensuring the stability of the carbide inserts 17. The second rotating rod 20 can also improve the convenience for the user when turning the nuts 19, without the need for other tools.

[0028] See Figure 1 and Figure 2 The number of frames 5, return springs 6, rings 7, electric push rods 8 and brackets 9 are all two, and the two frames 5, return springs 6, rings 7, electric push rods 8 and brackets 9 are symmetrically arranged on both sides of the conveyor belt 2. The two ends of the first rotating rod 13 are rotatably connected to the inner walls of the two rings 7, so that the two sides of the first rotating rod 13 can move stably up and down synchronously to achieve position movement, and the elastic force of the return spring 6 can drive the two rings 7 to quickly return to their original positions.

[0029] See Figure 2 A sliding groove is provided on the inner wall of the frame 5 near the stepper motor 12. The end of the first rotating rod 13 near the stepper motor 12 is slidably connected to the inner wall of the sliding groove, so that the first rotating rod 13 can move up and down on the inner wall of the sliding groove, thereby ensuring that the first rotating rod 13 will not interfere with the frame 5 when sliding.

[0030] Working principle: First, the material to be cut can be placed on top of the conveyor belt 2 for conveying. Then, the electric push rod 8 can be driven to move the ring 7 and the first rotating rod 13 downwards until the carbide blade 17 contacts the material. Then, the stepper motor 12 can be driven to rotate the first rotating rod 13 for easy-tear wire cutting of the material. At the same time, the positions of the two blade holders 14 can be changed and used alternately. With the help of the elastic force of the return spring 6, the ring 7 can be quickly returned to the top of the frame 5. At the same time, the second rotating rod 20 can be rotated to rotate the nut 19 away from the outer edge of the stud 18, so that the stud 18 can be removed from the inner wall of the blade holder 14 and the carbide blade 17, so that the carbide blade 17 can be easily replaced. It is also convenient to remove the two carbide blades 17 and install one of them into the inner wall of the straight blade groove 16.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A tear-off wire cutting mechanism for a printing press, comprising a positioning frame (1) and a frame (5), characterized in that, A conveyor belt (2) is installed on the top of the positioning frame (1). A servo motor (3) for driving the conveyor belt (2) is installed on the outside of the positioning frame (1). One end of a reset spring (6) is fixedly connected to the inner wall of the frame (5). The other end of the reset spring (6) is fixedly connected to a ring (7). The top of the ring (7) is fixedly connected to the power output shaft of an electric push rod (8). The inner wall of the ring (7) is rotatably connected to a first rotating rod (13). One side of the first rotating rod (13) is fixedly connected to the power output shaft of a stepper motor (12). A tool holder (14) is fixedly installed on the outer edge of the first rotating rod (13). Two oblique tool slots (15) are symmetrically opened on the outer side of the tool holder (14). A straight tool slot (16) is opened on the inner wall of the tool holder (14). Carbide blades (17) are inserted into the inner walls of the two oblique tool slots (15).

2. The easy-tear wire cutting mechanism for a printing press according to claim 1, characterized in that, The positioning frame (1) has two side plates (4) symmetrically fixedly installed on its outer side, and the top of each side plate (4) is equipped with a frame (5).

3. The easy-tear wire cutting mechanism for a printing press according to claim 1, characterized in that, A bracket (9) is fixedly installed on the outside of the frame (5). The bottom of the bracket (9) is fixedly connected to the top of the electric push rod (8). The output shaft of the electric push rod (8) is slidably connected to the inner wall of the frame (5).

4. The easy-tear wire cutting mechanism for a printing press according to claim 1, characterized in that, The outer wall of the frame (5) has two protrusions (10), and a guide frame (11) is fixedly installed on the outer side of the stepper motor (12). Two protrusions are installed on the side of the guide frame (11) near the protrusions (10), and the two protrusions are adapted to slide and connect to the inner wall of the two protrusions (10).

5. The easy-tear wire cutting mechanism for a printing press according to claim 1, characterized in that, The inner walls of the tool holder (14) and the two carbide cutting tools (17) are all fitted with studs (18). The outer edges of the studs (18) are symmetrically threaded with two nuts (19), and the two nuts (19) are in contact with the outer wall of the tool holder (14). The outer edges of the nuts (19) are fixedly connected with a second rotating rod (20).

6. The easy-tear wire cutting mechanism for a printing press according to claim 1, characterized in that, The number of the frame (5), reset spring (6), ring (7), electric push rod (8) and bracket (9) are all two, and the two frames (5), reset spring (6), ring (7), electric push rod (8) and bracket (9) are symmetrically arranged on both sides of the conveyor belt (2). The two ends of the first rotating rod (13) are rotatably connected to the inner walls of the two rings (7).

7. The easy-tear wire cutting mechanism for a printing press according to claim 1, characterized in that, A sliding groove is provided on the inner wall of the frame (5) near the stepper motor (12), and the end of the first rotating rod (13) near the stepper motor (12) is slidably connected to the inner wall of the sliding groove.

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