CN216031011U

CN216031011U - Paper cutting mechanism of paper cutter

Info

Publication number: CN216031011U
Application number: CN202121047147.8U
Authority: CN
Inventors: 乔娟; 薛忠尉
Original assignee: Shanghai Xuantong Printing Co ltd
Current assignee: Shanghai Xuantong Printing Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2022-03-15
Anticipated expiration: 2031-05-17

Abstract

The utility model provides a paper cutting mechanism of a paper cutter, which comprises a supporting frame, a cutter device and a pressing device, wherein the cutter device is arranged on the supporting frame; the supporting frame comprises a rectangular top plate, and a left front vertical plate, a right front vertical plate, a left rear vertical plate and a right rear vertical plate which are connected below the top plate; the cutter device comprises a first rotating shaft, a cutter rest, a cutter, a first guide column, a first tension spring and an irregular wheel; the pressing device comprises a second rotating shaft, a pressing block, a second guide column, a second tension spring and an eccentric wheel; and the first rotating shaft and the second rotating shaft are synchronously driven through a synchronous driving device. The paper cutting machine is provided with the irregular wheel and the eccentric wheel which rotate synchronously, can realize cutting and pressing simultaneously, has a good cutting effect, and can set the rotation degree of the second rotating shaft according to the thickness of paper so as to change the pressing degree; the first guide post and the second guide post are arranged, so that the cutting motion is stable; set up material feeding unit and send the waste material device, be convenient for pay-off and collect the waste material, and be convenient for accurate cutting.

Description

Paper cutting mechanism of paper cutter

Technical Field

The utility model belongs to the field of paper cutters, and particularly relates to a paper cutting mechanism of a paper cutter.

Background

The paper cutter is widely used for cutting paper neatly in the binding process, and the requirement for cutting the paper in the later printing period is met. In the prior art, the working process of the power paper cutter comprises paper pressing action and paper cutting action, the paper pressing action is driven by hydraulic pressure, and the pressure of the paper pressing action is determined by a hydraulic cylinder, so that the hydraulic pressure cannot be changed no matter the thickness and the width of the paper or the paper to be cut, and excessive compression and energy consumption increase are easily caused. In addition, the lifting of the existing cutter and the existing pressing block generally needs at least one power source, the more the power sources are, the probability of failure is greatly improved.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a paper cutting mechanism of a paper cutter, which aims to solve the problems.

The technical scheme for solving the technical problems is as follows: a paper cutting mechanism of a paper cutter comprises a supporting frame, a cutter device and a pressing device;

the supporting frame comprises a rectangular top plate, and a left front vertical plate, a right front vertical plate, a left rear vertical plate and a right rear vertical plate which are connected below the top plate;

the cutter device comprises a first rotating shaft, a cutter rest, a cutter, a first guide column and a first tension spring; the first rotating shaft is rotatably arranged between the right front vertical plate and the right rear vertical plate, one end of the first rotating shaft is connected with a motor, an irregular wheel is fixed on the first rotating shaft, the knife rest abuts against the lower side of the irregular wheel, the cutter is installed below the knife rest, a first guide post and a first tension spring are connected between the front side and the rear side of the top surface of the knife rest and the top plate, the bottom of the first guide post is fixed on the knife rest, and the top of the first guide post penetrates through the top plate and is provided with a limiting head;

the pressing device comprises a second rotating shaft, a pressing block, a second guide column and a second tension spring; the first rotating shaft is arranged between the front left vertical plate and the rear left vertical plate, an eccentric wheel is fixed on the second rotating shaft, the pressing block abuts against the lower side of the eccentric wheel, a second guide column and a second tension spring are connected between the front side and the rear side of the top surface of the pressing block and the top plate, the bottom of the second guide column is fixed on the pressing block, and the top of the second guide column penetrates through the top plate and is provided with a limiting head;

and the first rotating shaft and the second rotating shaft are synchronously driven through a synchronous driving device.

The utility model is further configured such that the irregular wheel is a round wheel lacking a planar cut.

The cutter is characterized in that the top of the cutter is a fixing part, the width of the fixing part is smaller than the maximum width of the cutter, a fixing groove is formed in the bottom surface of the cutter holder, and the fixing part slides in from one end of the fixing groove and is fixed together through a bolt.

The utility model is further provided that the synchronous transmission device is a synchronous belt and a synchronous wheel, or a rack and a rack.

The waste conveying device comprises a workbench, a cutting groove is formed in the workbench and is positioned right below the cutter, a hydraulic telescopic device is hinged to the bottom surface of the left side of the workbench, and a rotating shaft with a fixed position is connected to the bottom surface of the right side of the workbench; the feeding device is tightly attached to the left side of the waste feeding device, and the top surfaces of the feeding device and the waste feeding device are located on the same plane.

The utility model is further provided with a waste material groove arranged below the right end of the waste material feeding device.

The utility model has the following beneficial effects:

(1) the utility model is provided with the irregular wheel and the eccentric wheel to rotate synchronously, can realize cutting and pressing simultaneously and has good cutting effect. The rotation degree of the second rotating shaft can be set according to the thickness of the paper so as to change the compression degree.

(2) The utility model is provided with the first guide post and the second guide post, so that the cutting motion is stable.

(3) The waste material feeding device and the waste material feeding device are arranged, so that waste materials are conveniently fed and collected, and accurate cutting is facilitated.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the present invention;

fig. 3 is a schematic view of the connection structure of the tool holder and the cutter.

Wherein, 1, a left front vertical plate; 2. a right front riser; 3. a left rear riser; 4. a right rear riser; 5. a first rotating shaft; 6. a tool holder; 7. a cutter; 8. a first guide post; 9. a first tension spring; 10. an irregular wheel; 11. a limiting head; 12. a second rotating shaft; 13. a compression block; 14. a second guide post; 15. a tension spring II; 16. an eccentric wheel; 17. a synchronous drive; 18. a fixed part; 19. fixing grooves; 20. a bolt; 21. a feeding device; 22. a work table; 23. grooving; 24. a hydraulic telescopic device; 25. a rotating shaft; 26. a waste chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, the present invention provides a paper cutting mechanism of a paper cutter, including a support frame, a cutter unit, and a pressing unit.

Wherein, braced frame includes rectangle roof and connects left front vertical plate 1, right front vertical plate 2, left back vertical plate 3, right back vertical plate 4 under the roof.

The cutter device comprises a first rotating shaft 5, a first cutter rest 6, a cutter 7, a first guide column 8 and a first tension spring 9. The rotating shaft I5 is rotatably arranged between the right front vertical plate 2 and the right rear vertical plate 4, one end of the rotating shaft I is connected with a motor (the motor is not shown in the figure), and an irregular wheel 10 is fixed on the rotating shaft I5, and preferably, the irregular wheel 10 is a round wheel lacking a plane tangent plane. The knife rest 6 is abutted against the lower portion of the irregular wheel 10, the cutter 7 is installed below the knife rest 6, a first guide column 8 and a first tension spring 9 are connected between the front side and the rear side of the top surface of the knife rest 6 and the top plate, the bottom of the first guide column 8 is fixed on the knife rest 6, and the top of the first guide column 8 penetrates through the top plate and is provided with a limiting head 11. Under the natural state, the tension spring I9 tensions the irregular wheel 10 to tightly press the tool rest 6, the distance between the rotating shaft I5 and the tool rest 6 is the minimum, the cutter 7 can do reciprocating lifting motion along with the rotation of the motor, and the cutter descends to the lowest position every time to cut once. The guide post I8 provides guarantee for stable lifting motion.

The pressing device comprises a second rotating shaft 12, a pressing block, a second guide column 14 and a second tension spring 15. The first rotating shaft 5 is arranged between the front left vertical plate 1 and the rear left vertical plate 3, an eccentric wheel 16 is fixed on the second rotating shaft 12, the pressing block abuts against the lower portion of the eccentric wheel 16, a second guide column 14 and a second tension spring 15 are connected between the front side and the rear side of the top surface of the pressing block and the top plate, the bottom of the second guide column 14 is fixed on the pressing block, and the top of the second guide column 14 penetrates through the top plate and is provided with a limiting head 11. In order to reduce the weight, the middle of the pressing block can be provided with a hollow structure. Under the natural state, the tension spring II 15 tensions the eccentric wheel 16 to compress the compression block, the distance between the rotating shaft II 12 and the compression block is the minimum, the compression block can do reciprocating lifting motion along with the rotation of the rotating shaft II 12, the compression block descends to the lowest position along with the fact that the cutter 7 reaches the lowest position to compress paper, and the cutter 7 can cut stably and accurately.

The first rotating shaft 5 and the second rotating shaft 12 are synchronously driven through a synchronous driving device 17, and the synchronous driving device 17 can be a synchronous belt and a synchronous wheel or a rack and a rack. The degree of rotation of the first rotating shaft 5 and the second rotating shaft 12 can be set according to the thickness of the paper, and the degree of compaction is mainly changed.

Further, referring to fig. 1 and 2 as a preferred embodiment, the paper cutting mechanism of the paper cutting machine further includes a feeding device 21 and a waste material feeding device, the waste material feeding device includes a workbench 22, a cutting groove 23 is formed on the workbench 22 and located right below the cutter 7, a hydraulic telescopic device 24 is hinged to the left bottom surface of the workbench 22, a rotating shaft 25 with a fixed position is connected to the right bottom surface of the workbench 22, and the rotating shaft 25 can be fixed to other surrounding fixed structures, which is not illustrated herein. The feeding device 21 is closely attached to the left side of the waste feeding device, and the top surfaces of the feeding device and the waste feeding device are in the same plane. Further, a waste chute 26 is provided below the right end of the waste feeder.

The feeding device 21 conveys paper from left to right, and to the grooving 23 position, the motor drives a first rotating shaft 5 to rotate, and then a second rotating shaft 12 rotates, the eccentric wheel 16 pushes the pressing block downwards to press the paper downwards, and the irregular wheel 10 pushes the cutter 7 downwards to cut the paper, and then the hydraulic telescopic device 24 pushes the workbench 22 upwards to turn over around the rotating shaft 25, and the cut waste material enters the waste material groove 26 to be collected. Subsequently, the motor drives the cutter 7 and the pressing block to ascend, and the hydraulic telescopic device 24 drives the workbench 22 to reset.

Referring to fig. 3, as another embodiment, the top of the cutter 7 is a fixing portion 18, the width of the fixing portion 18 is smaller than the maximum width of the cutter 7, a fixing groove 19 is opened in the bottom surface of the cutter holder 6, and the fixing portion 18 slides in from one end of the fixing groove 19 and is fixed together by a bolt 20. The connection structure enables the cutting knife 7 to be firmly fixed and has good stability.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A paper cutting mechanism of a paper cutter is characterized by comprising a supporting frame, a cutter device and a pressing device;

2. The paper cutting mechanism of a paper cutter according to claim 1, wherein the irregular wheel is a round wheel lacking a flat cut surface.

3. The paper cutting mechanism of a paper cutter according to claim 1, wherein the top of the cutter is a fixing portion having a width smaller than the maximum width of the cutter, and the holder is formed with a fixing groove formed in the bottom surface thereof, the fixing portion being slid from one end of the fixing groove and fixed together by a bolt.

4. The paper cutting mechanism of a paper cutter according to claim 1, wherein the synchronous transmission means is a synchronous belt and a synchronous wheel, or a rack and a rack.