Printing paper cutting hob

Abstract

The utility model provides a paper cutting hob for printing, which belongs to the technical field of printing, aims to solve the problems that a traditional blade is exposed outside and is easy to damage, and paper cut off in the shearing process is easy to adhere to the blade and cannot be carried away in time to influence the continuity of machine operation, and comprises a working table, a fixed table, a roller and the blade, fixing tables are arranged on the two sides of the table top of the workbench, and a roller is arranged on the fixing table on one side and driven by a driving device. A blade groove is formed in the roller, the blade is clamped in the blade groove, a sliding block is arranged on the blade, a square hole communicated with the blade groove is formed in the roller, the sliding block is clamped in the square hole, and elastic pieces are arranged on the two sides of the sliding block respectively. A center shaft is fixedly arranged between the two fixing tables, a protruding part is fixedly arranged below the center shaft, a cavity is formed in the center line position of the roller and communicates with the square hole, the center shaft penetrates through the cavity, and the sliding block abuts against the surface of the center shaft.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing, and more specifically relates to a printing paper cutting roller. Background Art

[0002] Paper cutting machines are essential for paper production processes such as printing, packaging, and binding. They reduce production preparation time, improve cutting accuracy, reduce labor intensity, and enhance safety. Existing roller-cut paper cutters use blades mounted on a drum, which rotates to continuously cut paper. However, these blades are exposed and easily damaged. Furthermore, the cut paper can cling to the blades during the cutting process, causing paper feed to stall and preventing timely removal, impacting machine operation.

[0003] Therefore, in view of this, the existing structure and defects are studied and improved, and a printing paper cutting roller is provided to achieve the purpose of having more practical value. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a printing paper cutting roller to solve the problem that the traditional blade is exposed to the outside and is easily damaged, and the cut paper is slightly adhered to the blade during the cutting process, causing conveying pauses and cannot be transported away in time, affecting the continuity of machine operation.

[0005] The purpose and effect of the printing paper cutting roller of the utility model are achieved by the following specific technical means:

[0006] A printing paper cutting roller comprises a workbench, a fixed platform, a roller and a blade; fixed platforms are provided on both sides of the workbench surface, a roller is provided on the fixed platform on one of the sides, and the roller is driven by a driving device; a blade slot is provided on the roller, a blade is clamped in the blade slot, a slider is provided on the blade, a square hole connected to the blade slot is provided in the roller, the slider is clamped in the square hole, and elastic parts are provided on both sides of the slider; a central axis is fixedly provided between the two fixed platforms, a convex portion is fixedly provided below the central axis, a cavity is provided at the center line position of the roller, the cavity is connected to the square hole, the central axis is passed through the cavity, and the slider abuts against the surface of the central axis.

[0007] Furthermore, the elastic member includes a spring, a spring sheet, or a rubber ball, and the elastic member is pressed between the bottom of the slider and the bottom wall of the square hole.

[0008] Furthermore, the slider is T-shaped, and the bottom of the slider is fixedly connected to the blade.

[0009] Furthermore, the edge of the slider on the side close to the convex portion that contacts the convex portion is chamfered.

[0010] Furthermore, the outer cover of the drum is provided with a rubber cover, and the rubber cover has a slit with the same width as the end of the blade slot at the position where the blade extends.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] During the rotation of the drum, the rotation of the drum drives the slider to move to the convex part, the blade is pushed out to cut the paper, the spring is compressed, the drum continues to rotate, the slider leaves the convex part and slides into the cavity, the spring extends, and the blade is retracted into the drum. In this way, the blade is not exposed when not cutting, which protects the blade and prevents paper from sticking and pausing, thereby optimizing the continuity of rolling and cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a three-dimensional diagram of a printing paper cutting roller.

[0014] Figure 2 The utility model is an exploded view of a printing paper cutting roller.

[0015] Figure 3 It is a planing view of the roller portion of a printing paper cutting hob of the utility model.

[0016] Figure 4 This is a planing diagram of a printing paper cutting roller.

[0017] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0018] 1. Workbench; 2. Fixed table; 3. Roller; 4. Blade; 5. Slider; 6. Elastic member; 7. Central axis; 8. Protrusion; 9. Rubber sleeve; 301. Blade slot; 302. Square hole; 303. Cavity; 901. Slit. DETAILED DESCRIPTION

[0019] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] Example:

[0023] As attached Figure 1 To the attached Figure 4 As shown:

[0024] The utility model provides a printing paper cutting roller, comprising a workbench 1, a fixed platform 2, a roller 3 and a blade 4. Paper to be cut is laid flat on the workbench 1, fixed platforms 2 are provided on both sides of the workbench 1, and a roller 3 is provided on the fixed platform 2 on one side, and the roller 3 is driven by a driving device; a blade groove 301 is provided inside the roller 3, and the blade 4 is clamped in the blade groove 301, and the blade 4 is used to cut paper; a square hole 302 connected to the blade groove 301 is provided in the roller 3, a slider 5 is provided on the blade 4, and the slider 5 is clamped in the square hole 302, and elastic parts 6 are provided on both sides of the slider 5; a central axis 7 is fixedly provided on the fixed platform 2 at the other end, and a convex portion 8 is fixedly provided below the central axis 7; a cavity 303 is provided at the center line position of the roller 3, and the cavity 303 is connected to the square hole 302. The central axis 7 is passed through the cavity 303, and the slider 5 abuts against the surface of the central axis 7.

[0025] When the slider 5 slides to the convex portion 8, the slider 5 is squeezed, the elastic member 6 is compressed, and the slider 5 drives the blade 4 to extend out of the roller 3, contacting the paper for cutting. The roller 3 continues to rotate, the slider 5 leaves the convex portion 8, the elastic member 6 stretches and drives the slider 5 to move toward the central axis 7, and the slider 5 drives the blade 4 to retract into the roller 3.

[0026] Among them, the slider 5 is T-shaped, and the bottom of the slider 5 is fixedly connected to the blade 4. The T-shape can shorten the blade 4 as a whole to prevent the blade 4 from being too long and easily broken by stress, and the edge of the slider 5 on the side close to the protrusion 8 that contacts the protrusion 8 is chamfered, so that the slider 5 moves more smoothly when in contact with the protrusion 8.

[0027] The elastic member 6 includes a spring, a spring sheet, or a rubber ball, and the elastic member 6 is pressed between the bottom of the slider 5 and the bottom wall of the square hole 302 .

[0028] The outer surface of the roller 3 is covered with a rubber sleeve 9, and the rubber sleeve 9 has a slit 901 with the same width as the end of the blade slot 301 at the position where the blade 4 extends. When the roller 3 rotates, the rubber sleeve 9 drags the paper forward to allow the blade 4 to continue cutting the paper. The slit 901 is used to allow the blade 4 to extend smoothly.

[0029] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A printing paper cutting roller, characterized by: The invention comprises a workbench (1), a fixed table (2), a roller (3) and a blade (4); the fixed table (2) is arranged on both sides of the workbench (1); a roller (3) is arranged on the fixed table (2) on one side; the roller (3) is driven by a driving device; a blade groove (301) is provided on the roller (3); the blade (4) is clamped in the blade groove (301); a slider (5) is provided on the blade (4); a slider (6) is provided in the roller (3) and is communicated with the blade groove (301); A square hole (302) is provided, a slider (5) is clamped in the square hole (302), and elastic members (6) are respectively provided on both sides of the slider (5); a central axis (7) is fixedly provided between the two fixed platforms (2), a convex portion (8) is fixedly provided below the central axis (7), a cavity (303) is provided at the center line position of the roller (3), the cavity (303) is communicated with the square hole (302), the central axis (7) is passed through the cavity (303), and the slider (5) abuts against the surface of the central axis (7).

2. A printing paper cutting roller according to claim 1, characterized in that: The elastic member (6) comprises a spring, a spring sheet or a rubber ball, and the elastic member (6) is pressed between the bottom of the slider (5) and the bottom wall of the square hole (302).

3. A printing paper cutting roller according to claim 1, characterized in that: The slider (5) is T-shaped, and the bottom of the slider (5) is fixedly connected to the blade (4).

4. A printing paper cutting roll according to claim 1, characterized in that: The edge of the slider (5) on the side close to the convex portion (8) and in contact with the convex portion (8) is chamfered.

5. A printing paper cutting roller according to claim 1, characterized in that: The outer surface of the roller (3) is covered with a rubber sleeve (9), and the rubber sleeve (9) has a slit (901) with the same width as the end of the blade groove (301) at the position where the blade (4) extends.

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