CN-121989309-A - Special paper cutting device

Abstract

The invention relates to the technical field of paper cutting, in particular to a special paper cutting device which comprises a cutting seat, a cutting knife, a first supporting seat and a second supporting seat, wherein driving arms are arranged at two ends of the cutting knife, the first supporting seat is provided with a first supporting plate in a sliding mode, guide blocks are arranged at two sides of the second supporting seat, a second supporting plate is arranged below the cutting knife between the two guide blocks, locking structures used for locking the second supporting plate in an unlocking mode are arranged between two ends of the second supporting plate and the corresponding guide blocks respectively, at least one group of driving structures comprising a plurality of driving claws which are arranged at intervals along the width direction of the second supporting plate are arranged at two ends of the second supporting plate, the driving claws are hinged with the second supporting plate, when the driving arms are in inclined plane matching with the corresponding driving claws in a probing mode, the driving arms enable the second supporting plate to move by a unit displacement relative to the guide blocks and synchronously squeeze the first supporting plate, so that the cutting point positions of the surface of the second supporting plate are changed, fixed point abrasion is avoided, the service life of a platform is prolonged, and maintenance cost is reduced.

Inventors

• LIN ZHIHENG
• Xie Jingling

Assignees

• 东莞市志弘纸制品有限公司

Dates

Publication Date

20260508

Application Date

20260318

Claims (10)

1. 1. The special paper cutting device is characterized by comprising a cutting seat, wherein a cutting knife is movably arranged in the middle of the cutting seat, and driving arms are respectively arranged at two ends of the cutting knife; The cutting device comprises a cutting seat, a first supporting plate, a second supporting seat, guide blocks, a second supporting plate, locking structures, at least one group of driving structures, driving claws and a driving arm, wherein the first supporting seat is arranged at one end of the cutting seat in a sliding manner, the second supporting plate is arranged at the other end of the cutting seat in a sliding manner, the guide blocks are respectively arranged at two sides of the second supporting seat, the second supporting plate is arranged below a cutting knife between the two guide blocks, the locking structures used for locking the second supporting plate in an unlocking manner are respectively arranged between the two ends of the second supporting plate and the corresponding guide blocks, the driving structures comprise a plurality of driving claws which are arranged at intervals along the width direction of the driving claws are respectively arranged at two ends of the second supporting plate, the driving claws are hinged with the second supporting plate, and when the driving arm is detected downwards to be matched with the corresponding driving claw inclined surfaces, the driving arm enables the second supporting plate to move a unit displacement relative to the guide blocks and synchronously extrude the first supporting plate to move, so that the cutting point position of the surface of the second supporting plate is changed.
2. 2. The special paper cutting device according to claim 1, wherein a buffer spring is connected between the driving arm and the cutting knife, a driving inclined plane and a concave avoidance position are arranged at the tail end of the driving arm, mounting holes are respectively formed at the two ends of the second supporting plate, the position, close to the lower end of the driving claw, is fixedly hinged with the side wall of the mounting hole, and the lower end of the driving claw is movably hinged with the side wall of the mounting hole, so that the upper end of the driving claw protrudes upwards obliquely out of the mounting hole.
3. 3. The special paper cutting device according to claim 1, wherein the guide block is provided with a sliding hole, at least one driving groove is formed in the inner wall of the sliding hole, sliding arms which are slidably arranged in the sliding hole are respectively arranged at two ends of the second supporting plate in an extending mode, clamping pins are elastically and movably arranged on the sliding arms, the clamping pins are movably embedded into the driving grooves, and the driving grooves and the clamping pins are matched together to form the locking structure.
4. 4. The special paper cutting device according to claim 3, wherein each driving groove comprises a first straight line section, a first inclined section, a second straight line section and a second inclined section which are connected end to end in sequence, wherein a plurality of locking steps are arranged in the first straight line section, the depth of the first inclined section is larger than that of the first straight line section, the depth of the second straight line section is identical to that of the first inclined section, the length of the second straight line section is smaller than that of the first straight line section, the two sections are arranged in parallel, the depth of one end of the second inclined section, close to the second straight line section, is identical to that of the second straight line section, the depth of one end of the second inclined section, close to the first straight line section, is smaller than that of the first straight line section, and a smooth transition inclined surface is arranged in the second inclined section.
5. 5. The special paper cutting device according to claim 4, wherein a first spring for providing a reset function for the first support plate is connected between both sides of the first support plate and the first support seat, respectively.
6. 6. The specialty paper cutting device of claim 5, wherein a second spring is disposed between the slide arm and the inner wall of the slide bore for providing a return function for the bayonet lock.
7. 7. The special paper cutting device according to claim 6, wherein the second supporting plate can be turned 180 degrees relative to the second supporting seat, and the top surface and the bottom surface of the second supporting plate are respectively provided with a first cutting plane and a second cutting plane which are symmetrical in center; The top surface and the bottom surface at two ends of the second supporting plate are respectively provided with a group of driving structures in the mounting holes; Two symmetrically arranged driving grooves are formed in the inner wall of the sliding hole, and a second spring is connected between two sides of the sliding arm and the inner wall of the sliding hole respectively.
8. 8. The special paper cutting device according to claim 7, wherein the two sides of the second supporting seat are provided with sliding frames in a sliding mode, the sliding frames are provided with vertical strip holes, and a connecting arm horizontally extends from one side of the sliding frames facing the first supporting seat, two ends of the cutting knife are respectively hinged with connecting rods, the lower ends of the connecting rods are provided with guide strip holes in a penetrating mode, and the tail ends of the connecting arms are provided with hinge pins which are movably hinged to the guide strip holes; The guide rail is provided with a guide rail and a guide hole, one end of the guide rail, which is far away from the first support seat, is provided with an inclined overturning section, the guide hole comprises a straight line part and an arc part connected to one end of the straight line part, which is far away from the first support seat, the position of the inclined overturning section corresponds to the position of the arc part, the outer side of each guide block is axially connected with two rollers at intervals, the rollers are movably supported on the guide rail, the middle part of the outer side of each guide block is extended with a linkage rod, and the linkage rod is movably clamped with the vertical strip hole after movably penetrating through the guide hole; the two sides of the second supporting seat are respectively provided with a first permanent magnet, the lower end part of the clamping pin is embedded with a second permanent magnet which is magnetically repulsed with the first permanent magnet, and the upper end part of the clamping pin is embedded with a third permanent magnet which is magnetically repulsed with the first permanent magnet.
9. 9. The special paper cutting device according to claim 8, wherein a third spring is connected between one side of the sliding frame, which is opposite to the first supporting seat, and the second supporting seat, a guide sleeve is arranged in the sliding arm in a sliding mode, the upper end of the clamping pin movably stretches into the guide sleeve, a fourth spring is arranged in the guide sleeve, and two ends of the fourth spring are respectively abutted to the clamping pin and the guide sleeve.
10. 10. The cutting device for special paper according to any one of claims 1 to 9, wherein the two sides of the first supporting seat are respectively provided with an electric push rod and a push plate connected with the output end of the electric push rod, and the push plate is movably supported on the upper surface of the first supporting plate.

Description

Special paper cutting device Technical Field The invention relates to the technical field of paper cutting, in particular to a special paper cutting device. Background In the technical field of paper cutting, special paper (such as corrugated paper, paperboard, rice paper, copy paper and the like) has obvious difference in material hardness and thickness, and strict requirements are put forward on the suitability of a cutting platform. The cutting knife of the existing cutting equipment cuts at the fixed point for a long time, so that the local excessive abrasion of the platform is easy to cause, frequent maintenance or replacement of parts is required, and the maintenance cost of the equipment is obviously increased. In addition, the existing cutting equipment has the problem that the suitability of a cutting platform is poor, a single cutting platform cannot meet the cutting requirements of different types of special paper, when thick and hard paper is cut, the soft platform is easy to be pressed to generate concave, so that the notch flatness is poor, the dimensional accuracy is insufficient, and when thin and soft paper is cut, the hard platform is easy to rub against the surface of the paper, and the problems of wrinkling, breakage and the like of the paper are caused. In order to solve the problem, the existing mode of manually replacing the adaptive cutting platform or the gasket is generally adopted, so that the operation is complex, the labor intensity is high, the machine is stopped for a long time, and the improvement of the production efficiency is seriously restricted. Disclosure of Invention The invention aims to overcome the defects and provide a special paper cutting device. In order to achieve the above object, the present invention is specifically as follows: A special paper cutting device comprises a cutting seat, wherein a cutting knife is movably arranged in the middle of the cutting seat, and driving arms are respectively arranged at two ends of the cutting knife; The cutting device comprises a cutting seat, a first supporting plate, a second supporting seat, guide blocks, a second supporting plate, locking structures, at least one group of driving structures, driving claws and a driving arm, wherein the first supporting seat is arranged at one end of the cutting seat in a sliding manner, the second supporting plate is arranged at the other end of the cutting seat in a sliding manner, the guide blocks are respectively arranged at two sides of the second supporting seat, the second supporting plate is arranged below a cutting knife between the two guide blocks, the locking structures used for locking the second supporting plate in an unlocking manner are respectively arranged between the two ends of the second supporting plate and the corresponding guide blocks, the driving structures comprise a plurality of driving claws which are arranged at intervals along the width direction of the driving claws are respectively arranged at two ends of the second supporting plate, the driving claws are hinged with the second supporting plate, and when the driving arm is detected downwards to be matched with the corresponding driving claw inclined surfaces, the driving arm enables the second supporting plate to move a unit displacement relative to the guide blocks and synchronously extrude the first supporting plate to move, so that the cutting point position of the surface of the second supporting plate is changed. The invention further discloses a buffer spring connected between the driving arm and the cutting knife, wherein the tail end of the driving arm is provided with a driving inclined plane and is concavely provided with a avoidance position, the two ends of the second supporting plate are respectively provided with a mounting hole, the position, close to the lower end of the driving claw, of the driving claw is fixedly hinged with the side wall of the mounting hole, and the lower end of the driving claw is movably hinged with the side wall of the mounting hole, so that the upper end of the driving claw protrudes upwards obliquely and protrudes out of the mounting hole. The invention further provides a sliding hole formed in the guide block, at least one driving groove is formed in the inner wall of the sliding hole, sliding arms which are slidably arranged in the sliding hole are respectively extended from two ends of the second supporting plate, clamping pins are elastically and movably arranged on the sliding arms and are movably embedded into the driving groove, and the driving groove and the clamping pins are matched together to form the locking structure. The driving groove comprises a first straight line section, a first inclined section, a second straight line section and a second inclined section which are connected end to end in sequence, wherein a plurality of locking steps are arranged in the first straight line section, the depth of the first inclined section is larger than that