Cutting mechanism of rotary press

Abstract

The utility model belongs to the technical field of rotary presses, and particularly relates to a cutting mechanism of a rotary press, which comprises a box body, a supporting table top is fixedly arranged on the upper side wall of the box body, guide mechanisms are arranged at the left end and the right end of the supporting table top, a cutting opening is formed in the side wall of the supporting table top, and a cutting groove is formed in the side wall of the cutting opening. A support is fixedly arranged at the rear end of the upper side wall of the supporting table top, so that in the process that a first electric push rod drives a cutting knife to move downwards in a transmission mode, two pressing wheels can make contact with printing paper firstly, and along with continuous moving downwards, the two pressing wheels can press the printing paper to be attached to the supporting table top and flatten the printing paper towards the two ends; and finally, the printing paper is cut through the cutting knife, and it is guaranteed that notches are neat. And when the cutting knife becomes pause after being used for a long time, the two polishing blocks can be matched with the cutting knife, so that the cutting knife is rapidly polished, and the sharpness of the cutting knife is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary printing machines, in particular to a cutting mechanism of a rotary printing machine. Background Art

[0002] A rotary printing press is a type of equipment that can achieve high-speed printing. It is a type of web printing press. Rotary printing presses are mainly used for printing color magazines, high-end commercial advertisements, high-end promotional materials, pictorials, etc. Rotary printing presses are usually divided into four-color, six-color, eight-color or more colors according to the number of colors that can be printed. The cutting mechanism is an important component of the rotary printing press, which is responsible for cutting the printed paper;

[0003] However, the existing cutting mechanism still has the following technical problems when used:

[0004] When the existing cutting mechanism cuts the printed paper, if the printed paper does not fit completely with the supporting table, the cutting process may easily cause uneven cuts on the printed paper, thereby causing production errors; secondly, after using the cutting mechanism for a long time, the blade of the cutter will become dull, and the current cutting mechanism cannot automatically grind the blade of the cutter, and cannot ensure the sharpness of the cutter.

[0005] Therefore, a cutting mechanism of a rotary printing press is now proposed to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a cutting mechanism for a rotary printing press to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cutting mechanism of a rotary printing press, comprising a box body, the upper side wall of the box body is fixedly provided with a supporting table, the left and right ends of the supporting table are both provided with guiding mechanisms, the side wall of the supporting table is provided with a cutting opening, the rear end of the upper side wall of the supporting table is fixedly provided with a bracket, the side wall of the bracket is fixedly provided with a first electric push rod, the lower end of the first electric push rod is fixedly provided with a cross plate, the lower side wall of the cross plate is fixedly provided with a knife seat, and the lower side wall of the knife seat is fixedly provided with a cutting knife, the lower side wall of the cross plate is located at both ends of the knife seat, and U-shaped blocks are fixedly provided, and mounting plates are rotatably provided inside the two U-shaped blocks, and pressing wheels are rotatably provided at the lower ends of the two mounting plates, and a spring is fixedly provided between the two sides of the mounting plates that are close to the knife seat, and the left and right walls of the knife seat are both fixedly provided with supporting blocks, and the two sides of the supporting blocks that are away from each other are in contact with the side wall of the mounting plate;

[0008] A grinding chamber is fixedly arranged inside the box body, a limiting mechanism is arranged at the lower end inside the grinding chamber, a moving mechanism is fixedly arranged at the upper end of the limiting mechanism, and a grinding mechanism is fixedly arranged on the upper side wall of the moving mechanism.

[0009] Preferably, the guide mechanism comprises a support frame, the support frame is fixedly connected to the side wall of the support table, and symmetrical guide wheels are rotatably arranged inside the support frame.

[0010] Preferably, the side wall of the cutting knife is slidably connected to the inner wall of the cutting opening.

[0011] Preferably, the limiting mechanism comprises a limiting rod, the limiting rod is fixedly arranged inside the grinding chamber, and a limiting ring is slidably arranged outside the limiting rod.

[0012] Preferably, the moving mechanism includes two strip plates, and the two strip plates are fixedly connected to the two ends of the inner wall of the grinding chamber, the upper side walls of the two strip plates are fixedly provided with racks, the upper side wall of the limiting ring is fixedly provided with a chassis, and a dual-axis motor is fixedly provided inside the chassis, and transmission rods are fixedly provided at both ends of the dual-axis motor, and gears are fixedly provided at the other ends of the two transmission rods, and the two gears are meshed with the two racks.

[0013] Preferably, the grinding mechanism includes two fixed plates, both of which are fixedly connected to the upper side wall of the chassis, the side walls of the two fixed plates are fixedly provided with a second electric push rod, and the adjacent ends of the two second electric push rods are fixedly provided with a grinding block, and the adjacent sides of the two grinding blocks are adapted to the side wall of the cutting knife.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The present application cooperates with the U-shaped block, the mounting plate, the pressing wheel, the spring and the supporting block, so that when the cutting knife is driven downward by the first electric push rod, the two pressing wheels will first contact the printed paper, and as the cutting knife continues to move downward, the two pressing wheels will press the printed paper to fit the supporting table and flatten it towards both ends, and finally the printed paper will be cut by the cutting knife to ensure a neat cut.

[0016] Through the cooperation of the limiting mechanism, the moving mechanism and the grinding mechanism, when the cutting knife becomes stiff due to long-term use, two grinding blocks can be matched with the cutting knife to grind it quickly to ensure its sharpness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

[0019] Figure 3 It is a schematic diagram of the structure of the U-shaped block, the mounting plate and the pressing wheel;

[0020] Figure 4 It is a structural schematic diagram of the limiting mechanism;

[0021] Figure 5 Schematic diagram of the structure of the cutting knife and the grinding block.

[0022] In the figure: 1 box body, 2 support table, 3 bracket, 4 first electric push rod, 5 horizontal plate, 6 knife holder, 7 cutting knife, 8 U-shaped block, 9 mounting plate, 10 pressing wheel, 11 spring, 12 support block, 13 grinding chamber, 14 support frame, 15 guide wheel, 16 limit rod, 17 limit ring, 18 strip plate, 19 rack, 20 chassis, 21 dual-axis motor, 22 transmission rod, 23 gear, 24 fixed plate, 25 second electric push rod, 26 grinding block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Example:

[0026] See also Figure 1-5 , the utility model provides a technical solution:

[0027] A cutting mechanism of a rotary printing press comprises a box body 1, a support table 2 is fixedly arranged on the upper side wall of the box body 1, a guide mechanism is arranged at the left and right ends of the support table 2, a cutting opening is opened on the side wall of the support table 2, a bracket 3 is fixedly arranged on the rear end of the upper side wall of the support table 2, a first electric push rod 4 is fixedly arranged on the side wall of the bracket 3, a horizontal plate 5 is fixedly arranged on the lower end of the first electric push rod 4, a knife seat 6 is fixedly arranged on the lower side wall of the horizontal plate 5, a cutting knife 7 is fixedly arranged on the lower side wall of the knife seat 6, U-shaped blocks 8 are fixedly arranged at both ends of the lower side wall of the horizontal plate 5 at the knife seat 6, mounting plates 9 are rotatably arranged inside the two U-shaped blocks 8, and the lower ends of the two mounting plates 9 are rotatably arranged There is a pressing wheel 10, a spring 11 is fixedly arranged between the side where the two mounting plates 9 are close to each other and the knife seat 6, and a support block 12 is fixedly arranged on the left and right walls of the knife seat 6, and the two support blocks 12 are in contact with the side wall of the mounting plate 9 on the side away from each other. Through the cooperation of the U-shaped block 8, the mounting plate 9, the pressing wheel 10, the spring 11 and the support block 12, it is convenient to drive the cutting knife 7 to move downward through the first electric push rod 4. The two pressing wheels 10 will first contact the printed paper. As it continues to move downward, the two pressing wheels 10 will press the printed paper to fit it with the support table 2 and flatten it towards both ends. Finally, the printed paper is cut by the cutting knife 7 to ensure the neatness of the incision;

[0028] A grinding chamber 13 is fixedly arranged inside the box body 1, a limiting mechanism is arranged at the lower end inside the grinding chamber 13, a moving mechanism is fixedly arranged at the upper end of the limiting mechanism, and a grinding mechanism is fixedly arranged on the upper side wall of the moving mechanism.

[0029] Through the cooperation of the limiting mechanism, the moving mechanism and the grinding mechanism, when the cutting knife becomes frustrated due to long-term use, the two grinding blocks 26 can be matched with the cutting knife 7 to grind it quickly to ensure its sharpness.

[0030] The guide mechanism comprises a support frame 14 , which is fixedly connected to the side wall of the support table 2 , and a symmetrical guide wheel 15 is rotatably arranged inside the support frame 14 .

[0031] The side wall of the cutting blade 7 is slidably connected to the inner wall of the cutting opening to ensure the uniformity of cutting the printed paper.

[0032] The limiting mechanism comprises a limiting rod 16 , which is fixedly arranged inside the grinding chamber 13 , and a limiting ring 17 is slidably arranged outside the limiting rod 16 .

[0033] The moving mechanism includes two strip plates 18, and the two strip plates 18 are fixedly connected to the two ends of the inner wall of the grinding chamber 13. The upper side walls of the two strip plates 18 are fixedly provided with racks 19, and the upper side wall of the limit ring 17 is fixedly provided with a chassis 20. A dual-axis motor 21 is fixedly provided inside the chassis 20, and transmission rods 22 are fixedly provided at both ends of the dual-axis motor 21. The other ends of the two transmission rods 22 are fixedly provided with gears 23. The two gears 23 are meshed with the two racks 19. The dual-axis motor 21 here uses a forward and reverse motor, so that the moving mechanism can move back and forth.

[0034] The grinding mechanism includes two fixed plates 24, and the two fixed plates 24 are fixedly connected to the upper side walls of the chassis 20. The side walls of the two fixed plates 24 are fixedly provided with second electric push rods 25, and the adjacent ends of the two second electric push rods 25 are fixedly provided with grinding blocks 26. The adjacent sides of the two grinding blocks 26 are adapted to the side walls of the cutting knife 7. When the two grinding blocks 26 are combined, they can completely adapt to the shape of the cutting knife 7, and the cutting knife 7 can be polished through continuous friction.

[0035] Working principle:

[0036] First, the printing paper will be transported to the inside of the rotary printing machine through two guide mechanisms. When the printing paper needs to be cut, the first electric push rod 4 is started, and the first electric push rod 4 drives the lower cross plate 5 to move downward, and the cross plate 5 drives the lower knife seat 6 and the cutting knife 7 to move downward. Before the cutting knife 7 contacts the printing paper, the two pressing wheels 10 will contact the printing paper first. As the downward pressure continues, the two pressing wheels 10 will flatten the printing paper on the upper end of the supporting table 2, and then the cutting knife 7 will cut the printing paper. After long-term use, the blade of the cutting knife 7 becomes blunt, and the cutting knife 7 is directly moved to the inside of the box 1. The grinding block 26 is driven to move closer by the two second electric push rods 25, so as to adapt to the cutting knife 7, and the grinding mechanism is driven by the moving mechanism to grind the cutting knife 7.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting mechanism for a rotary printing press, comprising a housing (1), characterized in that: A support table (2) is fixedly provided on the upper side wall of the box body (1), a guide mechanism is provided on the left and right ends of the support table (2), a cutting opening is provided on the side wall of the support table (2), a bracket (3) is fixedly provided on the rear end of the upper side wall of the support table (2), a first electric push rod (4) is fixedly provided on the side wall of the bracket (3), a horizontal plate (5) is fixedly provided on the lower end of the first electric push rod (4), a knife seat (6) is fixedly provided on the lower side wall of the horizontal plate (5), and a cutting knife (7) is fixedly provided on the lower side wall of the knife seat (6), The lower side walls of the horizontal plate (5) are fixedly provided with U-shaped blocks (8) at both ends of the knife seat (6), the interiors of the two U-shaped blocks (8) are rotatably provided with mounting plates (9), the lower ends of the two mounting plates (9) are rotatably provided with pressing wheels (10), a spring (11) is fixedly provided between the two mounting plates (9) and the knife seat (6) on the sides close to each other, and support blocks (12) are fixedly provided on the left and right walls of the knife seat (6), and the two sides of the two support blocks (12) facing away are in contact with the side walls of the mounting plates (9); A grinding chamber (13) is fixedly arranged inside the box body (1), a limiting mechanism is arranged at the lower end inside the grinding chamber (13), a moving mechanism is fixedly arranged at the upper end of the limiting mechanism, and a grinding mechanism is fixedly arranged on the upper side wall of the moving mechanism.

2. A cutting mechanism for a rotary printing press according to claim 1, characterized in that: The guide mechanism comprises a support frame (14), the support frame (14) being fixedly connected to the side wall of the support table (2), and a symmetrical guide wheel (15) being rotatably arranged inside the support frame (14).

3. The cutting mechanism of a rotary printing press according to claim 1, characterized in that: The side wall of the cutting knife (7) is slidably connected to the inner wall of the cutting opening.

4. The cutting mechanism of a rotary printing press according to claim 1, characterized in that: The limiting mechanism comprises a limiting rod (16), wherein the limiting rod (16) is fixedly arranged inside the grinding chamber (13), and a limiting ring (17) is slidably arranged outside the limiting rod (16).

5. The cutting mechanism of a rotary printing press according to claim 4, characterized in that: The moving mechanism comprises two strip plates (18), the two strip plates (18) are fixedly connected to the two ends of the inner wall of the grinding chamber (13), the upper side walls of the two strip plates (18) are fixedly provided with racks (19), the upper side wall of the limit ring (17) is fixedly provided with a chassis (20), a dual-axis motor (21) is fixedly provided inside the chassis (20), transmission rods (22) are fixedly provided at both ends of the dual-axis motor (21), and gears (23) are fixedly provided at the other ends of the two transmission rods (22), and the two gears (23) are meshed with the two racks (19).

6. The cutting mechanism of a rotary printing press according to claim 5, characterized in that: The grinding mechanism comprises two fixing plates (24), the two fixing plates (24) are fixedly connected to the upper side wall of the chassis (20), the side walls of the two fixing plates (24) are fixedly provided with second electric push rods (25), the adjacent ends of the two second electric push rods (25) are fixedly provided with grinding blocks (26), and the adjacent sides of the two grinding blocks (26) are adapted to the side wall of the cutting knife (7).

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