Oblique cutter cutting device of paper cutter

Abstract

The utility model relates to an inclined cutter cutting device of a paper cutter, which is characterized in that a paper cutting mechanism and a paper pressing mechanism are independently arranged on two sides of a vertical frame, the lower end of the vertical frame is connected with a bottom plate to form a paper cutting cavity, and a paper cutting bedplate is arranged on the bottom plate; the paper cutting mechanism comprises a cutter connecting rod, a cutter, a reversing arm set and a pull rod, one end of the cutter connecting rod is connected with the cross beam, the other end of the cutter connecting rod is connected with the cutter, one end of the reversing arm set is connected with the end of the cutter, the other end of the reversing arm set is connected with one end of the pull rod, and when the pull rod is pulled, the cutter is pulled by the reversing arm set to move obliquely. The first motor is arranged at the bottom of the bottom plate through the first motor mounting frame and is parallel to the bottom plate; the paper pressing mechanism comprises a paper pressing plate strip and a paper pressing connecting rod, the paper pressing plate strip is connected to the tail end of the paper pressing connecting rod, and the paper pressing connecting rod is connected with the second motor through a connecting block. The whole device is carefully designed to ensure stable operation in the high-speed cutting process, so that the production efficiency and the cutting quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of tabletop paper cutter technology, specifically a slanted blade cutting device for a paper cutter. Background Technology

[0002] A desktop paper cutter is a small, convenient paper-cutting device commonly used in offices, schools, and small printing shops. It is compact, can be placed on a desktop, and is easy to operate, generally driven manually or electrically. Manual desktop paper cutters use a handle to push the blades for cutting, while electric models are driven by a motor, making cutting less strenuous. Its maximum cutting size is typically around A4 paper size, with high cutting precision, meeting the needs of everyday documents, photos, etc. Some models are also equipped with safety features for added peace of mind.

[0003] Patent application number CN202021215296.6 discloses a novel oblique cutting mechanism for a paper cutter, comprising a platform, two columns symmetrically arranged on the platform, a crossbeam connecting the tops of the two columns, two triangular linkage plates connected to the crossbeams via a rotating shaft, a cutter connecting rod fixed at one end to the rotating shaft, a cutter hinged to the end of the cutter connecting rod away from the rotating shaft, a longitudinal top plate fixed to one end of the cutter, an oblique top rod hinged to the bottom of the longitudinal plate, a drive unit for pushing the oblique top rod to move, a pressure plate connecting rod hinged to the end of the triangular linkage plate away from the rotating shaft, a pressure plate hinged to the end of the pressure plate connecting rod away from the triangular linkage plate, and a transverse connecting rod hinged to the end of the triangular linkage plate away from the rotating shaft and the pressure plate connecting rod. The cutter has two limiting grooves for limiting the cutter connecting rod. The cutter of this invention enters the workpiece more smoothly, greatly improving the cutting quality. However, because the cutter and pressure plate are connected synchronously through a longitudinal top plate, an oblique top rod, a triangular linkage plate, a pressure plate connecting rod, and a rotating shaft, the cutter and pressure plate interfere with each other during operation, reducing the cutting accuracy. Utility Model Content

[0004] To address the shortcomings of the existing technology, the purpose of this utility model is to provide a slanted cutting device for a paper cutter, which optimizes the independent paper cutting mechanism and paper pressing mechanism. During operation, the paper pressing action and the paper cutting action are controlled by the second motor and the first motor respectively, and do not affect each other.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A paper cutter with a slant blade includes a stand, a base plate, a paper cutting table, a paper cutting mechanism, and a paper pressing mechanism. The paper cutting mechanism and the paper pressing mechanism are independently arranged on both sides of the stand. The lower end of the stand is connected to the base plate to form a paper cutting cavity. The paper cutting table is disposed on the base plate.

[0007] The paper cutting mechanism includes a cutter linkage, a cutter, a reversing arm assembly, and a pull rod. One end of the cutter linkage is connected to a crossbeam, and the other end of the cutter linkage is connected to the cutter. One end of the reversing arm assembly is connected to the end of the cutter, and the other end of the reversing arm assembly is connected to one end of the pull rod. When the pull rod is pulled, the cutter is pulled obliquely by the reversing arm assembly. The pull rod is connected to a first motor, and the first motor is mounted on the bottom of the base plate and is arranged parallel to the base plate.

[0008] The paper pressing mechanism includes a paper pressing strip and a paper pressing rod. The paper pressing strip is connected to the end of the paper pressing rod, and the paper pressing rod is connected to a second motor through a connecting block.

[0009] As a preferred embodiment of this utility model, the reversing arm assembly includes a straight connector and a bent connector. The straight connector is axially connected to the bent connector. The bent connector includes a first connecting part, a bend part, and a second connecting part connected in sequence. The straight connector is axially connected to the first connecting part. The base plate is provided with an elongated hole corresponding to the axial connection between the straight connector and the first connecting part. A pair of connecting plates are fixedly connected below the elongated hole. The bend part is connected between the two connecting plates through a connecting shaft. The second connecting part faces the pull rod and is connected through a connecting rod shaft. The pull rod is connected to a connecting assembly through a connecting shaft. The connecting assembly is connected to the output end of the first motor.

[0010] As a preferred embodiment of the present invention, the connecting assembly includes a first screw, a first side rod, and a first connecting block. A bushing is fitted onto the first connecting block, and the bushing is connected to the first screw. A first hole is provided on the first connecting block, and the first side rod is inserted into the first hole. Two first side rods are symmetrically arranged on both sides of the first screw.

[0011] As a preferred embodiment of the present invention, the first connecting part is provided with a first limiting surface, the second connecting part is provided with a second limiting surface, and the pull rod is provided with a third limiting surface corresponding to the second limiting surface.

[0012] As a preferred embodiment of this utility model, the top of the base plate is connected to a limiting plate, and the two limiting plates are respectively positioned to contact the side of the cutter. The limiting plates are connected to the frame and the base plate by bolts. The two limiting plates are of different lengths, with the longer limiting plate positioned on the side where the cutter is connected to the reversing arm assembly, and the bolts on the upper part of the shorter limiting plate limiting the cutter.

[0013] As a preferred embodiment of this utility model, a second motor mounting bracket is provided on the top of one side of the support frame. The second motor mounting bracket includes a mounting bracket top plate and a mounting bracket bottom plate. The output shaft of the second motor passes through the mounting bracket top plate and is connected to the second screw. The second screw is screwed to the second connecting block. The second connecting block is connected downward to the paper pressing rod. The paper pressing rod passes through the mounting bracket bottom plate and is connected to the paper pressing strip.

[0014] As a preferred embodiment of this utility model, the second motor mounting bracket is provided with a second side rod, and the second connecting blocks are symmetrically arranged on both sides of the second screw.

[0015] As a preferred embodiment of this utility model, the two paper-pressing connecting rods are symmetrically arranged on the left and right sides of the second screw;

[0016] The pressure strip has inserts protruding from both sides toward the upright frame. The upright frame has a recessed part, the inserts are connected to the recessed part, and the upright frame is connected to an external baffle outside the recessed part. The inserts are limited by the external baffle.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] By setting independent paper cutting and paper pressing mechanisms on both sides of the upright frame, the paper pressing and paper cutting actions are controlled by the second motor and the first motor respectively during operation, and do not affect each other.

[0019] When the paper cutting and pressing mechanisms are not interconnected, only the faulty part needs to be repaired during maintenance, which reduces maintenance difficulty, reduces maintenance time, and improves work efficiency.

[0020] The first motor is attached to the bottom of the base plate and set parallel to the base plate to minimize the overall size of the tabletop paper cutter. At the same time, the design optimizes the cooperation between the reversing arm assembly and the pull rod, and connects to the first motor. Through structural design, when the first motor pulls, the reversing arm assembly reverses the direction to pull the cutter within a small space. At the same time, the cooperation between the reversing arm assembly and the pull rod achieves a labor-saving effect. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the paper cutting mechanism of this utility model.

[0024] Figure 3 for Figure 2 Cross-sectional view at point AA;

[0025] Figure 4 This is a structural schematic diagram of the surface where the paper pressing mechanism of this utility model is located;

[0026] Figure 5 for Figure 4 A schematic diagram of the structure excluding the second motor;

[0027] Figure 6 for Figure 4 Cross-sectional view at point BB.

[0028] In the picture:

[0029] 1. Upright frame; 100. Paper cutting chamber; 101. Crossbeam; 102. Recessed part; 103. External baffle; 2. Base plate; 201. Long slot; 202. Connecting plate; 203. Limiting upright plate; 3. Paper cutting table; 4. Paper cutting mechanism; 401. Cutter connecting rod; 402. Cutter; 403. Reversing arm assembly; 4031. Straight connector; 4032. Bending connector; 404. Pull rod; 4041. Third limiting surface; 5. Paper pressing mechanism; 501. Paper pressing strip; 502. Paper pressing connecting rod; 503. Insert, 6, First motor, 7, First motor mounting bracket, 8, Second motor, 9, Second motor mounting bracket, 901, Mounting bracket top plate, 902, Mounting bracket bottom plate, 903, Second screw, 904, Second connecting block, 905, Second side rod, 10, Connecting assembly, 1001, First screw, 1002, First side rod, 1003, First connecting block, 10031, First hole, a, First connecting part, a1, First limiting surface, b, Corner part, c, Second connecting part, c1, Second limiting surface. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] See attached document Figure 1 To be continued Figure 6 As shown, a paper cutter with a slant blade includes a frame 1, a base plate 2, a paper cutting table 3, a paper cutting mechanism 4, and a paper pressing mechanism 5. The paper cutting mechanism 4 and the paper pressing mechanism 5 are independently arranged on both sides of the frame 1. The lower end of the frame 1 is connected to the base plate 2 to form a paper cutting cavity 100. The paper cutting table 3 is arranged on the base plate 2.

[0033] The paper cutting mechanism 4 includes a cutter connecting rod 401, a cutter 402, a reversing arm assembly 403, and a pull rod 404. One end of the cutter connecting rod 401 is connected to the crossbeam 101 on the upright frame 1, and the other end of the cutter connecting rod 401 is connected to the cutter 402. One end of the reversing arm assembly 403 is connected to the end of the cutter 402, and the other end of the reversing arm assembly 403 is connected to one end of the pull rod 404. When the pull rod 404 is pulled, the cutter 402 is pulled obliquely by the reversing arm assembly 403. The pull rod 404 is connected to the first motor 6, and the first motor 6 is mounted on the first motor. The frame 7 is installed at the bottom of the base plate 2, and the first motor 6 is set parallel to the base plate 2. The first motor 6 is attached to the bottom of the base plate 2 and is set parallel to the base plate 2 to minimize the overall size of the tabletop paper cutter. At the same time, the design optimizes the cooperation between the reversing arm assembly 403 and the pull rod 404, and connects to the first motor 6. Through the structural design, when the first motor 6 pulls, the reversing arm assembly 403 is used to pull the cutter 402 within a small space. At the same time, the cooperation between the reversing arm assembly 403 and the pull rod 404 achieves the effect of saving effort.

[0034] The paper pressing mechanism 5 includes a paper pressing strip 501 and a paper pressing connecting rod 502. The paper pressing strip 501 is connected to the end of the paper pressing connecting rod 502, and the paper pressing connecting rod 502 is connected to the second motor 8 through a connecting block.

[0035] The reversing arm assembly 403 includes a straight connector 4031 and a bent connector 4032. The straight connector 4031 and the bent connector 4032 are axially connected. The bent connector 4032 includes a first connecting part a, a bend part b, and a second connecting part c connected in sequence. The straight connector 4031 is axially connected to the first connecting part a. The base plate 2 is provided with an elongated hole 201 at the axial connection between the straight connector 4031 and the first connecting part a. A pair of connecting plates 202 are fixed below the elongated hole 201. The bend part b is connected between the two connecting plates 202 through a connecting shaft. The second connecting part c faces the pull rod 404 and is connected through a connecting rod shaft. The pull rod 404 is connected to the connecting assembly 10 through the connecting shaft. The connecting assembly 10 is connected to the output end of the first motor 6. At the end of the reversing arm assembly 403, i.e., on the straight connector 4031, there is an interface that matches the cutter 402, so that the cutter 402 can quickly change position and improve cutting efficiency. The interface on the straight connector 4031 is fixedly connected to the cutter 402 by a positioning pin. The cooperation between the connecting shaft and the straight connector 4031 ensures the accuracy of the cutter 402's position and the reliability of its reversal.

[0036] The connecting assembly 10 includes a first screw 1001, a first side rod 1002, and a first connecting block 1003. A bushing 1004 is fitted onto the first connecting block 1003, and the bushing 1004 is connected to the first screw 1001. The first connecting block 1003 has a first hole 10031, and the first side rod 1002 is inserted into the first hole 10031. The two first side rods 1002 are symmetrically arranged on both sides of the first screw 1001. Furthermore, the two side rods and the first screw 1001 are all on the same horizontal plane. The two side rods distribute the force generated by the rotational friction between the first screw 1001 and the bushing 1004 due to the rotation of the first motor 6. This reduces the force on the first screw 1001, protects the first screw 1001, and extends its lifespan. On the other hand, it reduces the impact of the vibration of the first motor mounting frame 7 connected to the upright frame 1 on the entire paper cutter, ensuring the stability and accuracy of paper cutting.

[0037] The first connecting part a is provided with a first limiting surface a1, the second connecting part c is provided with a second limiting surface c1, and the pull rod 404 is provided with a third limiting surface 4041 corresponding to the second limiting surface c1.

[0038] The top of the base plate 2 is connected to the limiting plate 203. The two limiting plates 203 are respectively located in contact with the side of the cutter 402. The limiting plates 203 are connected to the frame 1 and the base plate 2 by bolts. The two limiting plates 203 are of different lengths. The longer limiting plate 203 is located on the side where the cutter 402 is connected to the reversing arm assembly 403. The bolts on the upper part of the shorter limiting plate 203 limit the cutter 402.

[0039] A second motor mounting bracket 9 is provided on the top of one side of the upright frame 1. The second motor mounting bracket 9 includes a mounting bracket top plate 901 and a mounting bracket bottom plate 902. The output shaft of the second motor 8 passes through the mounting bracket top plate 901 and is connected to the second screw 903. The second screw 903 is screwed to the second connecting block 904. The second connecting block 904 is connected downward to the paper pressing rod 502. The paper pressing rod 502 passes through the mounting bracket bottom plate 902 and is connected to the paper pressing strip 501.

[0040] The second motor mounting bracket 9 is provided with a second side rod 905. The second side rod 905 is symmetrically arranged on both sides of the second screw 903 and connected to the second connecting block 904. The vibration generated by the second motor 8 controlling the rotation of the second side rod 905 is absorbed by the second side rod 905, ensuring the stability of the paper pressing rod 502 during the cutting process.

[0041] Two paper-pressing connecting rods 502 are symmetrically arranged on the left and right sides of the second screw 903.

[0042] The pressure strip 501 has inserts 503 protruding from both sides toward the upright frame 1. The upright frame 1 has a recessed portion 102. The inserts 503 are connected to the recessed portion 102, and the upright frame 1 has an external baffle 103 connected to the outside of the recessed portion 102. The inserts 503 are limited by the external baffle 103. The external baffle 103 limits the insertion 503. When the insert 503 slides in the recessed portion 102, it achieves fast and stable sliding and ensures that the pressure strip 501 moves up and down on the vertical plane.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A paper cutter with a slanted blade, comprising a frame (1), a base plate (2), a paper cutting table (3), a paper cutting mechanism (4), and a paper pressing mechanism (5), characterized in that, The paper cutting mechanism (4) and the paper pressing mechanism (5) are independently arranged on both sides of the upright frame (1). The lower end of the upright frame (1) is connected to the base plate (2) to form a paper cutting cavity (100). The paper cutting platform (3) is located on the base plate (2). The paper cutting mechanism (4) includes a cutter connecting rod (401), a cutter (402), a reversing arm assembly (403), and a pull rod (404). One end of the cutter connecting rod (401) is connected to the crossbeam (101), and the other end of the cutter connecting rod (401) is connected to the cutter (402). One end of the reversing arm assembly (403) is connected to the end of the cutter (402), and the other end of the reversing arm assembly (403) is connected to one end of the pull rod (404). When the pull rod (404) is pulled, the cutter (402) is pulled obliquely by the reversing arm assembly (403). The pull rod (404) is connected to a first motor (6). The first motor (6) is mounted on the bottom of the base plate (2) through a first motor mounting bracket (7). The first motor (6) is set parallel to the base plate (2). The paper pressing mechanism (5) includes a paper pressing strip (501) and a paper pressing connecting rod (502). The paper pressing strip (501) is connected to the end of the paper pressing connecting rod (502), and the paper pressing connecting rod (502) is connected to the second motor (8) through a connecting block.

2. The oblique cutting device for a paper cutter according to claim 1, characterized in that, The reversing arm assembly (403) includes a straight connector (4031) and a bent connector (4032). The straight connector (4031) is axially connected to the bent connector (4032). The bent connector (4032) includes a first connecting part (a), a bend part (b), and a second connecting part (c) connected in sequence. The straight connector (4031) is axially connected to the first connecting part (a). The base plate (2) is correspondingly provided with the straight connector (4031) and the bent connector (4032). The first connecting part (a) has an elongated hole (201) at the shaft connection. A pair of connecting plates (202) are fixed below the elongated hole (201). The bend (b) is connected between the two connecting plates (202) through a connecting shaft. The second connecting part (c) faces the pull rod (404) and is connected through a connecting rod shaft. The pull rod (404) is connected to the connecting assembly (10) through the connecting shaft. The connecting assembly (10) is connected to the output end of the first motor (6).

3. The oblique cutting device for a paper cutter according to claim 2, characterized in that, The connecting assembly (10) includes a first screw (1001), a first side rod (1002) and a first connecting block (1003). A bushing (1004) is fitted onto the first connecting block (1003), and the bushing (1004) is connected to the first screw (1001). A first hole (10031) is provided on the first connecting block (1003), and the first side rod (1002) is inserted into the first hole (10031). Two first side rods (1002) are symmetrically arranged on both sides of the first screw (1001).

4. The oblique cutting device for a paper cutter according to claim 2, characterized in that, The first connecting part (a) is provided with a first limiting surface (a1), the second connecting part (c) is provided with a second limiting surface (c1), and the pull rod (404) is provided with a third limiting surface (4041) corresponding to the second limiting surface (c1).

5. The oblique cutting device for a paper cutter according to claim 4, characterized in that, The bottom plate (2) is connected to the top of the limiting plate (203) and the two limiting plates (203) are respectively in contact with the side of the cutter (402). The limiting plates (203) are connected to the frame (1) and the bottom plate (2) by bolts. The two limiting plates (203) are of different lengths. The longer limiting plate (203) is located on the side where the cutter (402) is connected to the reversing arm assembly (403). The bolts on the upper part of the shorter limiting plate (203) limit the cutter (402).

6. The oblique cutting device for a paper cutter according to claim 1, characterized in that, A second motor mounting bracket (9) is provided on the top of one side of the upright frame (1). The second motor mounting bracket (9) includes a mounting bracket top plate (901) and a mounting bracket bottom plate (902). The output shaft of the second motor (8) passes through the mounting bracket top plate (901) and is connected to the second screw (903). The second screw (903) is screwed to the second connecting block (904). The second connecting block (904) is connected downward to the paper pressing rod (502). The paper pressing rod (502) passes through the mounting bracket bottom plate (902) and is connected to the paper pressing strip (501).

7. The oblique cutting device for a paper cutter according to claim 6, characterized in that, The second motor mounting bracket (9) is provided with a second side rod (905), which is symmetrically arranged on both sides of the second screw (903).

8. The oblique cutting device for a paper cutter according to claim 6, characterized in that, The two paper-pressing connecting rods (502) are symmetrically arranged on the left and right sides of the second screw (903); The pressure strip (501) has inserts (503) protruding from both sides toward the stand (1). The stand (1) has a recessed part (102) recessed inward. The inserts (503) are connected to the recessed part (102). The stand (1) has an external baffle (103) connected to the outside of the recessed part (102). The inserts (503) are limited by the external baffle (103).

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