CN210682685U

CN210682685U - Paper cutter and paper anti-curling device thereof

Info

Publication number: CN210682685U
Application number: CN201921610352.3U
Authority: CN
Inventors: 徐�明
Original assignee: Accura Machinery & Manufacturing Taicang Co ltd
Current assignee: Accura Machinery & Manufacturing Taicang Co ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-06-05
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a paper cutter and anti-crimping device of paper thereof, including the frame, set up in roller, cover in the frame are located epaxial rubber bottom roller, can wind the axial lead of rubber bottom roller set up with rotating in the frame or epaxial swing arm and be used for compressing tightly the paper anti-bent axle on the rubber bottom roller, anti-bent axle set up in the swing arm, the axial lead of rubber bottom roller with be formed with the contained angle that is greater than zero between the plane that the axial lead of anti-bent axle formed and the paper, the anti-crimping device of paper has two operating condition at least, under two at least operating condition the contained angle is different each other. The paper fiber straightening machine is simple in structure and convenient to use, is not influenced by the tension of paper, enables the curled paper fibers to be deformed reversely more easily, facilitates the leveling of curled paper with large gram weight, high stiffness and small roll diameter, and is not easy to damage a paper coating.

Description

Paper cutter and paper anti-curling device thereof

Technical Field

The utility model belongs to the paper cutter field relates to a paper cutter and paper anti-curling device thereof.

Background

The high-speed paper cutter is a device for cutting paper or paperboard roll, and the reverse curling device is an indispensable main component part of the high-speed paper cutter and has extremely important function, at present, in various high-speed paper cutters in the market, a paper reverse curling device is configured, in three paper reverse curling devices shown in figures 1 to 3, a reverse curling crankshaft and a paper guide roller which enable the reverse face curled by the paper to pass through are adopted, the wrap angle α of the reverse curling surface of the paper curled on the reverse curling crankshaft is adjusted according to the bending degree of the paper, and the curled paper fiber is reversely deformed by mechanical force to achieve the purpose of flattening the paper, in figure 1, the reverse curling crankshaft swings upwards and downwards, in figure 2, the reverse curling crankshaft swings upwards and downwards, and in figure 3, the two reverse curling crankshafts swing upwards and downwards.

However, the prior art anti-curling device has the following drawbacks:

1) high stiffness paper and small winding diameter paper roll are not good in effect: the high-stiffness paper has good bending resistance, and the curl caused by forced winding of the paper by external force is difficult to smoothly recover in the process of unfolding the paper. Especially, when the small roll diameter is used for unreeling, the paper closer to the paper core is curled more seriously.

2) When the coated paper with high stiffness is reversely curled, the included angle α of the paper at the reverse bending shaft is too large, the reverse curling effect is poor, the included angle α of the paper at the reverse bending shaft is too small, and the coating layer is easy to wrinkle and damage the coating.

3) Under the condition that the included angle α of the paper at the reverse bending axis is not changed, when the tension of the paper is reduced, the paper becomes loose, the bending resistance is reduced, and the reverse bending effect is reduced.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model aims at providing a paper cutter and anti-crimping device of paper thereof, its simple structure, convenient to use do not receive the influence of paper tension size, make the paper fibre of curling reverse deformation more easily, the leveling of the curling paper of big grammes per square metre of being convenient for, high deflection, little book footpath, not fragile paper coating.

In order to achieve the above object, the utility model discloses a technical scheme as follows:

the utility model provides a paper anti-crimping device of paper cutter, includes the frame, set up in roller, cover in the frame are located epaxial rubber base roller, can wind the axial lead of rubber base roller set up with rotating in the frame or epaxial swing arm of roller and be used for compressing tightly paper anti-bent axle on the rubber base roller, anti-bent axle set up in on the swing arm, the axial lead of rubber base roller with be formed with the contained angle that is greater than zero between plane and the paper that anti-bent axle's axial lead formed, the anti-crimping device of paper has two operating condition at least, under two at least operating condition the contained angle is different each other.

Preferably, the paper anti-curling device still including set up in mounting bracket on the swing arm, anti-bent axle set up in on the mounting bracket, be provided with the multiunit on the mounting bracket along the axial lead interval arrangement's of anti-bent axle bakelite wheel, the wheel face of bakelite wheel with the periphery of anti-bent axle supports tight contact.

More preferably, each set of the bakelite wheels comprises at least two bakelite wheels arranged in parallel, the bakelite wheels are rotatably arranged on the mounting rack, and the axle of each bakelite wheel is parallel to the axial lead of the corresponding reverse crankshaft.

More preferably, the mounting frame is movably disposed on the swing arm, and the paper reverse curling device further includes a pressing cylinder for adjusting a paper pressing pressure between the reverse crank shaft and the glue bottom roller, and the pressing cylinder is disposed on the swing arm and connected to the mounting frame or the reverse crank shaft.

Further, a return spring for returning the mounting frame is arranged between the mounting frame and the swing arm.

More preferably, the paper decurling device further includes a gap adjustment screw for adjusting a size of a gap between the reverse crank shaft and the blanket roller, and the mounting bracket is movably coupled to the mounting bracket by the gap adjustment screw.

Preferably, the paper sheet reverse curling device further comprises a driving mechanism for driving the swing arm to rotate.

More preferably, actuating mechanism is including being used for the drive the pivoted swing speed reducer of roller, the rubber bottom roller pass through the bearing set up in on the roller and with the coaxial setting of roller, the swing arm connect in on the roller.

Preferably, the paper reverse curling device further comprises a paper feeding roller arranged in front of or behind the rubber bottom roller, and the included angle is formed by the plane and a paper surface between the reverse crank shaft and the paper feeding roller; the paper reverse curling device has a forward reverse curling working state and a reverse curling working state, when in the forward reverse curling working state, the paper feeding roller and the rubber bottom roller are positioned at the same side of the paper, and the reverse crankshaft is pressed at the other side of the paper; when the paper feeding roller is in a reverse bending working state, the paper feeding roller and the reverse bending shaft are positioned on the same side of the paper, and the glue bottom roller is positioned on the other side of the paper.

The utility model discloses another kind of technical scheme as follows:

a paper cutter comprising a paper de-curling device as described above.

The utility model discloses another kind of technical scheme as follows:

a paper cutter comprises a paper reverse curling device, wherein the paper reverse curling device comprises a rack, a roll shaft arranged on the rack, a rubber bottom roll coaxially sleeved on the roll shaft, a swing arm which can be rotatably arranged on the roll shaft around the axial lead of the roll shaft, a reverse crankshaft used for pressing paper on the rubber bottom roll and a swing speed reducer used for driving the roll shaft to rotate, the reverse crankshaft is arranged on the swing arm, and an included angle which is larger than zero is formed between a plane formed by the axial lead of the rubber bottom roll and the axial lead of the reverse crankshaft and a paper surface; the paper cutter still includes the controller, is used for detecting the roll footpath detection device of scroll book footpath size and is used for detecting the angle sensor of the position of anti-crank axle, the controller with roll footpath detection mechanism reaches angle sensor electric connection respectively, the controller still with swing speed reducer electric connection is in order to control the operation of swing speed reducer.

The utility model adopts the above scheme, compare prior art and have following advantage:

the utility model discloses a paper cutter and anti-crimping device of paper thereof, simple structure, convenient to use do not receive the influence of paper tension size, make the paper fibre of curling reverse deformation more easily, the leveling of the curling paper of big grammes per square metre, high deflection, little book footpath of being convenient for, not fragile paper coating.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of a prior art sheet reverse curling apparatus;

FIG. 2 is a schematic view of another prior art sheet de-curling device;

FIG. 3 is a schematic view of yet another prior art sheet de-curling device;

fig. 4 is a schematic structural diagram of a paper sheet reverse curling device according to an embodiment of the invention;

fig. 5 is a partial cross-sectional view of a paper anti-curl device according to an embodiment of the present invention;

fig. 6 is a schematic view of a paper anti-curling device according to an embodiment of the present invention;

fig. 7 is a schematic diagram of the operation of a paper anti-curling device according to an embodiment of the invention;

fig. 8 is a schematic diagram of another paper sheet reverse curling device according to an embodiment of the present invention.

Wherein the content of the first and second substances,

1', a reverse-winding crankshaft; 2', paper guide rollers;

1. a frame; 2. a roll shaft; 3. a glue bottom roller; 31. a bearing; 4. swinging arms; 5. a mounting frame; 51. a bakelite wheel; 6. a reverse crankshaft; 7. a pressing cylinder; 8. a gap adjustment screw; 9. a return spring; 10. a swing speed reducer; 11. an angle sensor; 12. paper feeding rollers; 13. paper.

Detailed Description

The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, enables the advantages and features of the invention to be more readily understood by those skilled in the art. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 4 to 8, the paper reverse curling device includes a frame 1, a roller shaft 2 disposed on the frame 1, a bottom rubber roller 3 sleeved on the roller shaft 2, a swing arm 4 rotatably disposed on the frame 1 or the roller shaft 2 around an axial line of the bottom rubber roller 3, and a reverse crankshaft 6 for pressing a paper 13 against the bottom rubber roller 3, the reverse crankshaft 6 is disposed on the swing arm 4, an included angle greater than zero is formed between a plane formed by the axial line of the bottom rubber roller 3 and an axial line of the reverse crankshaft 6 and the paper surface, and the included angle can be represented by α in fig. 6.

The paper anti-curling device further comprises an installation frame 5 arranged on the swing arm 4, the anti-bent shaft 6 is installed on the installation frame 5, a plurality of groups of bakelite wheels 51 arranged at intervals along the axial lead of the anti-bent shaft 6 are arranged on the installation frame 5, and the wheel surfaces of the bakelite wheels 51 are abutted against the circumferential surface of the anti-bent shaft 6. Each set of the bakelite wheels 51 comprises at least two bakelite wheels 51 which are arranged in parallel, and the axle of each bakelite wheel 51 is parallel to the axial lead of the reverse crankshaft 6. The bakelite wheel 51 is rotatably arranged on the mounting rack 5, the mounting rack 5 is specifically made of square steel, and the rigidity of the reverse crankshaft 6 is increased by the plurality of groups of bakelite wheels 51 arranged between the mounting rack 5 and the reverse crankshaft 6. The diameter of the reverse crankshaft 6 is 12-50 mm.

Specifically, as shown in fig. 5, both end portions of the roller shaft 2 are rotatably inserted into the frames 1 on both sides, so that the roller shaft 2 can rotate around its own axis. The two ends of the roll shaft 2 are respectively and fixedly provided with one swing arm 4, the two ends of the mounting rack 5 are respectively connected with the swing arms 4 on the two sides, the two ends of the reverse crankshaft 6 are respectively mounted at the two ends of the mounting rack 5 through bearing seat plates, and the mounting rack 5 and the reverse crankshaft 6 extend along the direction parallel to the axial lead of the roll shaft 2.

Preferably, both end portions of the mounting bracket 5 are movably disposed on the swing arm 4. The paper reverse curling apparatus further comprises a pressing cylinder 7 for adjusting the paper pressing pressure between the reverse crank shaft 6 and the back roll 3. The pressing cylinder 7 is installed on the swing arm 4, and a piston rod of the pressing cylinder 7 is fixedly connected with the mounting frame 5. When the pressing cylinder 7 is filled with gas, the mounting frame 5 and the reverse crankshaft 6 can move towards the rubber bottom roller 3; the pressure between the reverse crankshaft 6 and the rubber bottom roller 3 can be adjusted by adjusting the air input of the air cylinder. In this embodiment, the pressing cylinders 7 are arranged in pairs and respectively installed on the swing arms 4 on both sides.

In this embodiment, the mounting bracket 5 is movably connected to the swing arm 4 by a gap adjustment screw 8. The lower end of the gap adjusting screw 8 is connected with the swing arm 4, and the upper end of the gap adjusting screw is rotatably arranged in the end of the mounting frame 5 in a penetrating way and is connected with the mounting frame 5 through threads. The gap adjusting screw 8 is rotated to correspondingly adjust the position of the mounting frame 5 on the swing arm 4, so that the reverse crank shaft 6 moves relative to the rubber bottom roller 3, and the gap between the two for paper 13 to pass through is adjusted.

Further, a return spring 9 for returning the mounting bracket 5 is provided between the mounting bracket 5 and the swing arm 4. In this embodiment, the return spring 9 is a compression spring sleeved on the gap adjusting screw 8, and the upper end of the return spring abuts against the end of the mounting frame 5, and the lower end of the return spring abuts against the swing arm 4. After the cylinder stops ventilating, reset spring 9 resets and promotes mounting bracket 5, makes it keep away from rubber bottom roller 3 with anti-bent axle 6, is convenient for wear paper to avoid anti-bent axle 6 to press the rubber bottom roller 3 deformation damage that leads to on rubber bottom roller 3 for a long time after shutting down.

The rubber bottom roller 3 is rotationally sleeved on the roller shaft 2 through a bearing 31 and is coaxially arranged with the roller shaft 2. When the roll shaft 2 rotates, the rubber bottom roll 3 can not rotate along with the roll shaft 2.

The paper sheet reverse curling device further comprises a driving mechanism for driving the swing arm 4 to rotate. In this embodiment, the driving mechanism specifically includes a swing speed reducer 10 for driving the roller shaft 2 to rotate, and the swing speed reducer 10 is specifically installed on the frame 1 and connected to one end of the roller shaft 2. The roll shaft 2 is driven to move forwards or backwards through the swing speed reducer 10, the roll shaft 2 is driven to rotate forwards or backwards, and the swing arm 4 connected to the roll shaft 2 swings forwards or backwards along with the roll shaft, so that the paper pressing position of the reverse crankshaft 6 is adjusted.

An angle sensor 11 for detecting the position of the reverse crankshaft 6 in real time is further provided on one end portion of the roll shaft 2.

The paper sheet reverse curling device also comprises a paper feeding roller 12 arranged in front of or behind the glue bottom roller 3, and the included angle is formed by the plane (namely the plane formed by the axis of the glue bottom roller 3 and the axis of the reverse crankshaft 6) and the paper surface between the reverse crankshaft 6 and the paper feeding roller 12. In the present embodiment, as shown in fig. 7, the sheet feeding roller 12 is located behind the blanket roller 3, and the sheet reverse curling apparatus has a forward reverse curling operation state and a reverse curling operation state. As shown by the solid line part in fig. 7, in the forward and reverse bending operation, the paper feed roller 12 and the glue bottom roller 3 are located on the same side of the paper 13, and the reverse bending shaft 6 presses on the other side of the paper 13; as shown in the dotted line in fig. 7, in the reverse curving operation, the paper feed roller 12 and the reverse curving shaft 6 are located on the same side of the paper 13, and the back roll 3 is located on the other side of the paper 13. In other embodiments, it is also possible to use the arrangement shown in fig. 8, i.e. with the feed roller 12 in front of the backing roller 3, which also has a positive reverse-curvature operating condition and a reverse-curvature operating condition.

The present embodiment also provides a high-speed paper cutter. The paper cutting machine comprises the paper anti-curling device, and further comprises a controller, a roll diameter detection device used for detecting the roll diameter of the paper roll and an angle sensor 11 used for detecting the position of the anti-crank shaft 6, wherein the controller is electrically connected with the roll diameter detection mechanism and the angle sensor 11 respectively, and the controller is also electrically connected with the swing speed reducer 10 to control the swing speed reducer 10 to operate. Wherein, initially, the paper to be cut is wound on a winding drum to form the paper roll; when cut paper, the scroll unreels, and the paper carries out the flattening from the anti-crimping device of paper of scroll department through the paper and handles, then cuts through paper cutting device. The roll diameter detection device is arranged at the paper roll and used for detecting the outer diameter of the paper roll on the winding drum, and the roll diameter detection device can adopt an ultrasonic roll diameter measurement device known in the prior art.

The controller is also electrically connected with a control valve of the driving cylinder and used for controlling the air inflow of the driving cylinder. For example, according to the thickness of the paper, the material of the paper and the curvature of the paper, the air input of the pressing cylinder 7 is correspondingly adjusted, and the reverse crankshaft 6 presses the paper with corresponding pressure, so that a good leveling effect is obtained.

The paper reverse curling method of the high-speed paper cutter comprises the following steps:

detecting the size of the winding diameter of the paper roll through a winding diameter detection device;

the controller obtains the expected value of the included angle according to the size of the winding diameter of the paper roll, and obtains the expected position of the reverse crankshaft 6 according to the expected value of the included angle;

the angle sensor 11 detects the current position of the counter-crankshaft 6, which the controller compares with the desired position;

and the controller drives the swing speed reducer 10 to operate according to the comparison result, and moves the reverse crankshaft 6 to a desired position.

The paper reverse curling method also comprises the following steps:

the controller sends a control signal to the control valve of the pressing cylinder 7 according to the thickness of the paper, the material of the paper and the curvature of the paper, and the control valve of the pressing cylinder 7 correspondingly opens and closes in response to the control signal so as to adjust the air inflow of the pressing cylinder 7

The specific reverse curling process comprises the steps that paper rolls penetrate through a position between a reverse crank shaft 6 and a rubber bottom roller 3 and a paper passing roller 12, a reverse curling knob switch is located at an automatic position, the paper reverse curling device selects an automatic mode, a swinging speed reducer 10 moves the reverse crank shaft 6 to a zero position, a pressing cylinder 7 is used for ventilating when the zero position is reached, the reverse crank shaft 6 presses the paper to the rubber bottom roller 3, a paper cutter and a paper frame are started to tension, a machine is operated, paper rolls rotate, an automatic control system automatically detects the size of the roll diameter of the paper rolls, then the reverse curling crank shaft is controlled to a set position, and when the diameter of the paper rolls is reduced from a large diameter, the reverse crank shaft 6 swings α degrees and the size is increased.

The above embodiments are only for illustrating the technical concept and features of the present invention, and are preferred embodiments, which are intended to enable persons skilled in the art to understand the contents of the present invention and to implement the present invention, and thus, the protection scope of the present invention cannot be limited thereby. All equivalent changes or modifications made according to the principles of the present invention are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides a paper anti-curling device of paper cutter which characterized in that: including the frame, set up in roller in the frame, cover are located epaxial rubber base roller, can wind the axial lead of rubber base roller set up with rotating in the frame or epaxial swing arm of roller and be used for compressing tightly paper anti-bent axle on the rubber base roller, anti-bent axle set up in on the swing arm, the axial lead of rubber base roller with be formed with the contained angle that is greater than zero between plane and the paper that anti-bent axle's axial lead formed, the anti-crimping device of paper has two operating condition at least, under two at least operating condition the contained angle is different each other.

2. The paper decurling device according to claim 1, wherein: the paper reverse curling device further comprises a mounting frame arranged on the swing arm, the reverse crankshafts are arranged on the mounting frame, a plurality of groups of bakelite wheels arranged at intervals along the axial lead of the reverse crankshafts are arranged on the mounting frame, and the wheel surfaces of the bakelite wheels are in abutting contact with the circumferential surfaces of the reverse crankshafts.

3. The paper sheet reverse curling apparatus according to claim 2, wherein: each group of the bakelite wheels comprises at least two bakelite wheels arranged in parallel, the bakelite wheels are rotatably arranged on the mounting rack, and the wheel shafts of the bakelite wheels are parallel to the axial lead of the reverse crankshaft.

4. The paper sheet reverse curling apparatus according to claim 2, wherein: the mounting bracket is movably arranged on the swing arm, the paper anti-curling device further comprises a pressing cylinder used for adjusting paper pressing pressure between the reverse crank shaft and the rubber bottom roller, and the pressing cylinder is arranged on the swing arm and connected with the mounting bracket or the reverse crank shaft.

5. The paper decurling device according to claim 4, wherein: and a return spring for resetting the mounting frame is arranged between the mounting frame and the swing arm.

6. The paper sheet reverse curling apparatus according to claim 2, wherein: the paper anti-curling device further comprises a gap adjusting screw for adjusting the size of a gap between the anti-crank shaft and the glue bottom roller, and the mounting frame is movably connected to the mounting frame through the gap adjusting screw.

7. The paper decurling device according to claim 1, wherein: the paper anti-curling device further comprises a driving mechanism for driving the swing arm to rotate.

8. The paper sheet reverse curling apparatus according to claim 7, wherein: the actuating mechanism is including being used for the drive the pivoted swing speed reducer of roller, the rubber bottom roller pass through the bearing set up in on the roller and with the coaxial setting of roller, the swing arm connect in on the roller.

9. The paper decurling device according to claim 1, wherein: the paper reverse curling device also comprises a paper feeding roller arranged in front of or behind the rubber bottom roller, and the included angle is formed by the plane and a paper surface between the reverse crankshaft and the paper feeding roller; the paper reverse curling device has a forward reverse curling working state and a reverse curling working state, when in the forward reverse curling working state, the paper feeding roller and the rubber bottom roller are positioned at the same side of the paper, and the reverse crankshaft is pressed at the other side of the paper; when the paper feeding roller is in a reverse bending working state, the paper feeding roller and the reverse bending shaft are positioned on the same side of the paper, and the glue bottom roller is positioned on the other side of the paper.

10. A paper cutter characterized in that: comprising a paper decurling device as claimed in any one of claims 1 to 9.