Paper cutting structure in paper cutter

Abstract

The paper cutting structure in the paper cutter comprises a mounting frame, a first cutting roller, a second cutting roller and a transmission unit are assembled on the mounting frame, and a driving unit drives the first cutting roller and the second cutting roller to rotate oppositely through the transmission unit. Each of the first cutting roller and the second cutting roller comprises a roller body, and a plurality of blade units which are axially arranged are arranged on the roller bodies. Compared with the prior art, the paper cutting device has the following beneficial effects that through the flaring design of the channel, the problems that paper slips block the channel and wind the cutting roller are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of paper cutters, and particularly relates to a paper cutting structure in a paper cutter. Background Art

[0002] In the prior art, many paper cutters adopt a straight-through design. For example, according to the utility model patent entitled "A paper cutter core for a paper striping and pleating production line" with the authorization announcement number CN218985951U, the blade unit is installed on two sets of fixed-position cutting rollers. The paper is cut when passing between the two relatively rotating cutting rollers. The two sets of cutting rollers are designed with baffles on both sides of the paper cutting position. The two sets of baffles form a channel for the paper to pass through. This design has several significant problems: First, due to the relatively compact channel space design, especially the consistent upper and lower widths of the channel, when cutting paper, especially paper with a certain thickness or strong toughness, the two ends of the cut paper strips will press against the baffles, causing the paper strips to accumulate at the outlet, thereby causing a blockage. Secondly, once a blockage occurs, the paper strips may be twisted and wrapped around the cutting rollers due to force, which not only affects the continuity of the cutting, but may also cause equipment downtime, increasing maintenance costs and time.

[0003] Therefore, based on some of the above situations in the prior art, this application has been further designed and improved. Utility Model Content

[0004] In order to solve the above technical problems, the present invention solves them through the following technical solutions.

[0005] The present application proposes a paper cutting structure in a paper cutter. By arranging a first baffle and a second baffle of a specific shape on the mounting frame, and a channel outlet with a flared design, the volume of the channel is effectively increased. In particular, the open space design at the bottom of the channel greatly reduces the possibility of paper strip accumulation and blockage, and further reduces the risk of paper strips wrapping around the paper cutting roller, thereby improving the smoothness of the entire paper cutting operation and the stability of the equipment.

[0006] Specifically, a paper cutting mechanism in a paper cutting machine includes a mounting frame, on which are mounted a drive unit, a first cutting roller, a second cutting roller, and a transmission unit. The drive unit is connected to the transmission unit to drive the first and second cutting rollers to rotate toward each other. A spark shield is mounted on the drive unit. The first and second cutting rollers each include a roller body, on which a plurality of axially arranged blade units are disposed.

[0007] The mounting frame is mounted with a first baffle and a second baffle. Both baffles are provided with a blade slot for the blade unit to be exposed. A passage for paper to pass through is formed between the first baffle and the second baffle. The lower portion of the second baffle is curved and convex outward, making the space at the bottom of the passage larger than the space above. A connecting plate is mounted at the bottom of the mounting frame, and several flexible baffles are provided on the connecting plate. These flexible baffles are located directly below the passage. This design flares the exit of the passage, reducing the chance of paper strips clogging the passage.

[0008] Preferably, the portion of the roller body for mounting the blade unit is prism-shaped, the blade unit is integrally formed, and a mounting hole adapted to the prism shape is provided at the center of the blade unit. This design enhances the stability and durability of the blade, simplifies the assembly process, and improves the convenience of replacement and maintenance.

[0009] Preferably, the first cutting roller and the second cutting roller cooperate to form a paper cutting area, and the mounting frame is provided with support plates on both sides of the paper cutting area, and a plurality of support seats facing the paper cutting area are installed on the support plates, and the support seats are against the first cutting roller or the second cutting roller, providing stable support for the first cutting roller and the second cutting roller, thereby ensuring the paper cutting effect.

[0010] Compared with the prior art, the present application has the following beneficial effects: by designing the channel to be flared, the problem of paper strips blocking the channel and paper strips winding around the cutting roller is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional diagram of the paper cutting structure Figure 1 .

[0012] Figure 2 A three-dimensional diagram of the paper cutting structure Figure 2 .

[0013] Figure 3 A three-dimensional diagram of the paper cutting structure Figure 3 .

[0014] Figure 4 It is a structural side view of the paper cutting structure.

[0015] Figure 5 Schematic diagram of the second baffle.

[0016] Figure 6 It is a schematic diagram of the structure of the cooperation between the second cutting roller, the second baffle and the support seat.

[0017] Figure 7 It is a three-dimensional schematic diagram of the blade unit.

[0018] The following is a description of the symbols in the drawings of the specification:

[0019] 100, mounting frame; 110, first baffle; 111, second baffle; 120, knife groove; 130, channel;

[0020] 200, first cutting roller; 201, second cutting roller; 210, roller body; 211, blade unit; 212, mounting hole;

[0021] 300, transmission unit;

[0022] 400, connecting plate; 410, flexible baffle;

[0023] 500, support plate; 510, support seat;

[0024] 600, drive unit; 610, spark shield. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0026] In the following embodiments, the same or similar numbers throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, 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, and therefore cannot be understood as limiting the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Reference Figures 1 to 7A paper cutting structure in a paper cutter includes a mounting frame 100, on which a drive unit 600, a first cutting roller 200, a second cutting roller 201 and a transmission unit 300 are installed. The drive unit 600 drives the first cutting roller 200 and the second cutting roller 201 to rotate in opposite directions through the transmission unit 300. The first cutting roller 200 and the second cutting roller 201 both include a roller body 210, on which a plurality of axially arranged blade units 211 are provided. Taking into account the cutting requirements of paper of different thicknesses, an adjustable cutting gap adjustment mechanism can also be installed in the transmission unit 300. This mechanism allows the user to adjust the distance between the first cutting roller 200 and the second cutting roller 201 by simple manual or electric means according to the actual paper thickness, thereby ensuring the cutting quality while also improving the applicability and flexibility of the equipment.

[0029] The mounting frame 100 is mounted with a first baffle 110 and a second baffle 111. Each baffle 110 and 111 is provided with a blade slot 120 through which the blade unit 211 is exposed. A passage 130 for paper to pass through is formed between the first baffle 110 and the second baffle 111. The lower portion of the second baffle 111 is curved and convex outward, making the space at the bottom of the passage 130 larger than the space above it. The mounting frame 100 is equipped with a connecting plate 400 at the bottom. Several flexible baffles 410 are provided on the connecting plate 400 and are located directly below the passage 130. This design flares the outlet of the passage 130, reducing the chance of paper clogging the passage 130.

[0030] Furthermore, the portion of the roller body 210 for mounting the blade unit 211 is prismatic in shape. The blade unit 211 is integrally formed, with a mounting hole 212 at its center that matches the prismatic shape. This design enhances the blade's stability and durability, simplifies assembly, and improves ease of replacement and maintenance. To facilitate routine cleaning and maintenance of the equipment, the blade unit 211 is assembled and connected to the roller body 210 via a sleeve connection. Operators can remove and install the cutting roller without complex tools, significantly reducing maintenance time and improving production efficiency.

[0031] Furthermore, the first cutting roller 200 and the second cutting roller 201 cooperate to form a paper cutting area, and the mounting frame 100 is provided with support plates 500 on both sides of the paper cutting area, and a plurality of support seats 510 facing the paper cutting area are installed on the support plates 500. The support seats 510 are against the first cutting roller 200 or the second cutting roller 201, providing a stable support for the first cutting roller 200 and the second cutting roller 201, thereby ensuring the paper cutting effect.

[0032] Furthermore, the drive unit 600 is fitted with a spark shield 610. This design prevents sparks from igniting the paper strip during operation, improving the safety of the paper cutting mechanism and ensuring the safety of both the operator and the equipment. Furthermore, the drive unit 600 is also equipped with an external overload protection device. If an abnormal increase in cutting resistance, potentially leading to motor overload or mechanical damage, occurs, this device immediately triggers a shutdown protection, effectively preventing safety incidents and extending the equipment's service life.

[0033] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention is based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field fall within the protection scope of the present invention.

Claims

1. A paper cutting structure in a paper cutting machine, characterized in that: The invention comprises a mounting frame (100), wherein a driving unit (600), a first cutting roller (200), a second cutting roller (201) and a transmission unit (300) are mounted on the mounting frame (100); the driving unit (600) is connected to the transmission unit (300) to drive the first cutting roller (200) and the second cutting roller (201) to rotate in opposite directions; and an anti-spark cover (610) is mounted on the outside of the driving unit (600); the first cutting roller (200) and the second cutting roller (201) both comprise a roller body (210), and the roller body (210) is provided with a plurality of axially arranged blade units (211); A first baffle (110) and a second baffle (111) are mounted on the mounting frame (100); a blade groove (120) for exposing the blade unit (211) is provided on each of the first baffle (110) and the second baffle (111); a passage (130) for paper to pass through is formed between the first baffle (110) and the second baffle (111); the lower portion of the second baffle (111) is in an outwardly convex curved shape, so that the space at the bottom of the passage (130) is larger than the space above the passage (130); The bottom of the mounting frame (100) is equipped with a connecting plate (400), and a plurality of flexible baffles (410) are provided on the connecting plate (400). The flexible baffles (410) are located directly below the channel (130).

2. The paper cutting structure in a paper cutting machine according to claim 1, characterized in that: The portion of the roller body (210) used for mounting the blade unit (211) is prism-shaped, the blade unit (211) is integrally formed, and a mounting hole (212) adapted to the prism shape is provided at the center of the blade unit (211).

3. The paper cutting structure in a paper cutting machine according to claim 1, characterized in that: The first cutting roller (200) and the second cutting roller (201) cooperate to form a paper cutting area; the mounting frame (100) is provided with support plates (500) on both sides of the paper cutting area; a plurality of support seats (510) facing the paper cutting area are mounted on the support plates (500); the support seats (510) abut against the first cutting roller (200) or the second cutting roller (201).

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