CN216088816U - Automatic lapping device for roll paper - Google Patents

Abstract

The utility model discloses an automatic lapping device for roll paper, which comprises a lapping table, wherein a paper disc support frame for erecting a new paper disc and an old paper disc is arranged on the lapping table, paper deviation rectifying mechanisms are respectively arranged at the inner sides of the paper disc support frames for erecting the new paper disc and the old paper disc on the lapping table, paper on the new paper disc and paper on the old paper disc are respectively fed into a lapping cavity through the paper deviation rectifying mechanisms, and lapping assemblies for lapping the new paper and the old paper are arranged in the lapping cavity.

Description

Automatic lapping device for roll paper

Technical Field

The utility model relates to the technical field of paper disc lapping, in particular to an automatic lapping device for roll paper.

Background

The switching lap joint mode of the new paper tray and the old paper tray in the current filter rod making machine such as KDF2 filter rod making machine is from the initial static lap joint to the current non-stop high-speed lap joint. However, regardless of the type of splicing used, double-sided tape is required, and this causes various problems.

As disclosed in patent application No. 201921250648.9, a plugwrap switching device includes: the paper guide motor, the paper guide connecting shaft, the paper guide roller, the rubber compression roller, the paper storage box, the lapping motor, the lapping connecting shaft, the lapping roller, the transition roller and the concave-convex die realize the non-adhesive tape splicing of the new paper plate and the old paper plate, the paper guide motor drives the new paper plate from a static state to be synchronous with the speed of the main motor of the filter rod forming machine, so that the new paper plate and the old paper plate are in a relatively static state, and the lapping of the new paper plate and the old paper plate is completed through the matching of the dies between the lapping roller and the transition roller, but the existing lapping of the roll paper still has the problems of inconvenient lapping, paper deviation and the like in the using process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic lapping device for roll paper, which realizes the deviation correction of new and old paper before lapping through the arrangement of a paper deviation correcting structure, leads the new and old paper after deviation correction to be lapped through a lapping cavity, realizes the trimming of the lapped paper through a trimming mechanism, and realizes the shearing of the paper by a shearing mechanism through tensioning the lapped paper through a clamping mechanism.

The technical problem solved by the utility model is as follows:

(1) how to prevent the new and old paper from deflecting in the lapping process;

(2) how to realize trimming and cutting processing of the overlapped paper;

(3) how to realize the overlapping of the paper with different thicknesses by the overlapping cavity.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides an automatic bridging device of stock form, includes the overlap joint platform, the overlap joint bench is provided with the paper disc support frame that is used for new, old paper disc to erect, the overlap joint bench supplies the paper disc support frame inboard that new, old paper disc erect all to be provided with the paper mechanism of rectifying, and the paper on the paper dish of new and old paper disc all sends into the overlap joint chamber through the paper mechanism of rectifying, overlap joint intracavity portion is provided with and is used for new, old paper lapped overlap joint subassembly.

As a further scheme of the utility model: the fixed setting of accepting the board of paper mechanism of rectifying is on the riser of overlap joint platform, it is the arc structure and vertically has seted up the guide way along accepting the face both sides of board to accept the board, the concave surface inboard of accepting the board is provided with screw rod one, screw rod one is fixed to be set up on the riser, the screw thread at screw rod one both ends is revolved to opposite, the both ends of screw rod one are provided with the removal dish through the threaded connection symmetry, all rotate on the removal dish at both ends and are connected with the disc, be provided with the connecting rod on the outer periphery of disc, the connecting rod runs through the guide way of accepting the board and connects the board of rectifying, the board of rectifying is the arc structure, the concave surface of the board of rectifying and the convex surface looks adaptation of accepting the board.

As a further scheme of the utility model: the movable disc is of an I-shaped structure, and the circular disc is clamped in an outer circle groove of the movable disc.

As a further scheme of the utility model: the paper disc support frame comprises a base fixedly arranged on a bottom plate of the lapping table, slide rails are arranged on two sides of the top surface of the base, a paper disc installation roller for paper disc installation is connected to the slide rails of the base in a sliding mode, a first air cylinder is fixedly arranged at the top of the end face of the base, and a piston rod of the first air cylinder is fixedly connected with the side face of the paper disc installation roller.

As a further scheme of the utility model: the paper is provided with the conveying roller set between mechanism and the overlap joint chamber of rectifying, the conveying roller set sets up under overlap joint chamber paper feed inlet, the conveying roller set comprises three transfer roller, and three transfer roller is regular triangle structure and arranges, and leaves the clearance that the paper passed between the three transfer roller.

As a further scheme of the utility model: the lapping cavity is of a four-frame structure, lapping components are symmetrically arranged on two transverse sides of the interior of the lapping cavity along the direction of a central line, screw rods II are arranged on two longitudinal sides of the interior of the lapping cavity, the screw thread turning directions of the screw rods II along the two ends of the central line direction are opposite, and connecting lugs on two sides of the lapping components are in threaded connection with the screw rods II;

the lap joint subassembly includes the C template, the fixed engaging lug that is provided with in outside both sides of C template, the inside of C template is provided with the overlap joint roller, the pivot one end that the overlap joint roller erect is provided with the belt pulley, the lateral surface of C template is provided with the motor, and the output of motor passes through belt and belt pulley connection.

As a further scheme of the utility model: two end portions of the screw rods on two sides of the lap joint cavity are provided with driven gears, a motor is fixedly arranged outside the lap joint cavity, an output shaft of the motor penetrates through the lap joint cavity to be provided with a driving gear, and the driving gear is connected with the driven gears on two sides through a gear belt.

As a further scheme of the utility model: the overlap joint bench is fixed to be provided with deburring mechanism, and lies in the rear end in the overlap joint chamber along paper advancing direction deburring mechanism, two fixed settings of cylinder at the top of overlap joint platform of deburring mechanism, the piston rod end fixing of cylinder two is provided with U type plate frame one, the inside of U type plate frame one is provided with screw rod three, the screw rod is three to opposite along the screw thread at central line direction both ends soon, the both ends symmetry of screw rod three is provided with nut seat three, the bottom of nut seat three is provided with the deburring motor, the output of deburring motor sets up the deburring rim plate.

As a further scheme of the utility model: the paper fixing device is characterized in that clamping mechanisms used for fixing paper are arranged on the two sides of the lapping table and located on the trimming mechanism, a screw rod IV of each clamping mechanism is arranged on the back face of a vertical plate of the lapping table, the screw threads at the two ends of the screw rod IV along the central direction are opposite in rotating direction, the two ends of the screw rod IV are symmetrically provided with a nut seat IV through threaded connection, a supporting rod frame is arranged on the front face of the nut seat IV, and a vertical groove, penetrating through the front face of the lapping table, of the supporting rod frame is connected with a clamping roller.

As a further scheme of the utility model: two be provided with between the clamping mechanism and cut the mechanism, two shearing arm one end of cutting the mechanism all are provided with the slide bar, the slide bar runs through the positive C type groove setting of overlap joint platform, and all is provided with on the slide bar of two shearing arms and cuts the sword, the other end of cutting two shearing arms of mechanism all articulates there is the connecting plate, the other end of connecting plate articulates on nut seat five, five sliding connection of nut seat are on screw rod five.

The utility model has the beneficial effects that:

(1) according to the utility model, through the arrangement of the paper sheet deviation rectifying mechanism, the positions of the movable discs at two ends of the screw rod are adjusted by rotating the movable disc, so that the disc drives the deviation rectifying plates to move on the bearing plates through the connecting rods, thereby realizing the adjustment of the distance between the two deviation rectifying plates on the bearing plates according to the width of the paper sheet, realizing the positioning of the paper sheet in the advancing process, effectively preventing the deviation of new and old paper sheets before overlapping, improving the overlapping accuracy of the new and old paper sheets, meanwhile, through the arrangement of the paper sheet support frame, the piston rod is driven by the cylinder I to push the paper sheet mounting roller to move on the base, and adjusting the positions of the new and old paper sheets by matching with the paper sheet deviation rectifying mechanism, namely, through two-stage deviation rectifying adjustment, the overlapping accuracy of the new and old paper sheets is further ensured;

(2) according to the utility model, through the arrangement of the trimming mechanism, namely, the trimming mechanism trims the overlapped new and old paper sheets, the trimming mechanism trims the overlapped paper sheets on two sides, namely, the trimming mechanism realizes synchronous trimming on two sides of the paper sheets, the trimming efficiency is high, trimming ports are neat, and through arranging two clamping mechanisms on the overlapping table, the paper sheets are clamped through the clamping mechanisms, so that the shearing mechanism realizes shearing of the paper sheets, the sheared paper sheets can be effectively prevented from wrinkling, and the practicability is strong;

(3) according to the utility model, through the arrangement of the lapping cavity, the two lapping assemblies capable of moving mutually are arranged in the lapping cavity, and the distance between the lapping rollers in the two lapping assemblies is adjusted, so that the lapping cavity can lap new and old paper sheets with different thicknesses, and the lapping cavity has high flexibility and wide application range.

Drawings

The utility model will be further described with reference to the accompanying drawings.

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic view of the structure of the movable plate of the present invention;

FIG. 3 is a schematic view of the construction of the adaptor plate of the present invention;

FIG. 4 is a schematic view of the structure of the lap chamber of the present invention;

FIG. 5 is a schematic view showing the structure of a support frame for a paper tray according to the present invention;

FIG. 6 is a schematic structural view of an deburring mechanism of the present invention;

FIG. 7 is a schematic view of the construction of the clamping mechanism of the present invention;

fig. 8 is a schematic view of the structure of the shearing mechanism of the present invention.

In the figure: 1. a lapping table; 101. a paper disc support frame; 1011. a base; 1012. a paper tray mounting roller; 1013. a slide rail; 1014. a first cylinder; 2. a paper deviation rectifying mechanism; 201. a first screw rod; 202. a movable tray; 203. a disc; 204. a connecting rod; 205. a bearing plate; 206. a guide groove; 207. a deviation rectifying plate; 3. a set of transport rollers; 4. a lap joint chamber; 401. a second screw; 402. an overlapping component; 4021. c-shaped plates; 4022. connecting lugs; 4023. a lapping roller; 5. a trimming mechanism; 501. a second air cylinder; 502. a first U-shaped plate frame; 503. a third screw; 504. a third nut seat; 505. trimming the motor; 6. a clamping mechanism; 601. a screw rod IV; 602. a nut seat IV; 603. a pinch roller; 7. a shearing mechanism; 701. c-shaped grooves; 702. a shearing knife; 703. a slide bar; 704. a fifth screw; 705. a nut seat V; 706. a connecting plate.

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.

Example 1

Referring to fig. 1-5, the present invention is an automatic paper roll overlapping device, in which a paper tray supporting frame 101 for erecting new and old paper trays is disposed on an overlapping table 1, and the new and old paper trays are respectively erected on the paper tray supporting frame 101;

the paper tray supporting frame 101 comprises a base 1011 fixedly arranged on the bottom plate of the lap joint table 1, slide rails 1013 are arranged on two sides of the top surface of the base 1011, a paper tray mounting roller 1012 for mounting a paper tray is connected on the slide rails 1013 of the base 1011 in a sliding manner, a first air cylinder 1014 is fixedly arranged on the top of the end surface of the base 1011, and a piston rod of the first air cylinder 1014 is fixedly connected with the side surface of the paper tray mounting roller 1012;

when the paper plate lapping machine is used, the piston rod is driven by the first air cylinder 1014 to push the paper plate mounting roller 1012 to move on the slide rail 1013 of the base 1011, the positions of a new paper plate and an old paper plate are adjusted by matching the paper deviation rectifying mechanism 2, so that one-stage deviation rectifying adjustment in the lapping process is formed, and the lapping precision of the new paper plate and the old paper plate can be ensured.

The paper on the new paper tray and the paper on the old paper tray are sent into the lapping cavity 4 through the paper deviation rectifying mechanism 2, and the paper deviation rectifying mechanism 2 realizes the two-stage deviation rectifying adjustment in the lapping process of the new paper and the old paper;

wherein, the bearing plate 205 of the paper deviation rectifying mechanism 2 is fixedly arranged on the vertical plate of the lapping table 1, the bearing plate 205 is of an arc structure, and two sides of the plate surface of the bearing plate 205 are longitudinally provided with guide grooves 206, a first screw 201 is arranged on the inner side of the concave surface of the bearing plate 205, the first screw 201 is fixedly arranged on a vertical plate, the screw threads at the two ends of the screw rod 201 are opposite in rotating direction, the two ends of the screw rod 201 are symmetrically provided with moving discs 202 through screw thread connection, the moving discs 202 at the two ends are both rotatably connected with discs 203, the outer circumference of the disc 203 is provided with a connecting rod 204, the connecting rod 204 penetrates through a guide groove 206 of a bearing plate 205 to be connected with a deviation-correcting plate 207, the movement of the deviation correcting plate 207 on the bearing plate 205 is more stable through the limiting function of the connecting rod 204, the correcting plate 207 is of an arc-shaped structure, and the concave surface of the correcting plate 207 is matched with the convex surface of the bearing plate 205;

during the use, through rotating the movable tray 202, adjust the position of the movable tray 202 at screw rod 201 both ends, make disc 203 drive the board 207 that rectifies a deviation through connecting rod 204 and move on accepting the board 205 to realize that two boards 207 that rectify a deviation interval adjust according to the paper width on accepting the board 205, realize advancing the in-process location to the paper, realize the second grade location of rectifying a deviation to the overlap joint in-process, can effectively prevent new, the skew of old paper before the overlap joint, improve new, old paper overlap joint accuracy.

Conveying the new and old paper sheets after two-stage deviation correction into a lapping cavity 4 for lapping;

the lapping cavity 4 is of a four-frame structure, lapping components 402 are symmetrically arranged on two transverse sides of the interior of the lapping cavity 4 along the direction of a central line, screw rods II 401 are arranged on two longitudinal sides of the interior of the lapping cavity 4, the screwing directions of threads at two ends of the screw rods II 401 along the direction of the central line are opposite, connecting lugs 4022 on two sides of the lapping components 402 are in threaded connection with the screw rods II 401, and threaded through holes matched with the screw rods II 401 are formed in the connecting lugs 4022;

the lapping assembly 402 comprises a C-shaped plate 4021, connecting lugs 4022 are fixedly arranged on two sides of the outside of the C-shaped plate 4021, a lapping roller 4023 is arranged inside the C-shaped plate 4021, a belt pulley is arranged at one end of a rotating shaft erected by the lapping roller 4023, a motor is arranged on the outer side surface of the C-shaped plate 4021, and the output end of the motor is connected with the belt pulley through a belt;

the end parts of the second screw rods 401 at two sides of the lap joint cavity 4 are provided with driven gears, a motor is fixedly arranged outside the lap joint cavity 4, an output shaft of the motor penetrates through the lap joint cavity 4 and is provided with a driving gear, and the driving gear is connected with the driven gears at two sides through a gear belt.

When the paper splicing device is used, the driving gear is driven by the motor outside the splicing cavity 4 to drive the driven gears on the two sides of the screw rod II 401 to rotate through the gear belt, so that the screw rod II 401 on the two sides inside the splicing cavity 4 synchronously rotate, the splicing components 402 at the two ends of the screw rod II 401 synchronously move, and the splicing components 402 move in opposite directions or opposite directions inside the splicing cavity 4 according to the thickness of the spliced paper, namely, the distance between the splicing rollers 4023 in the two splicing components 402 is adjusted, so that the splicing cavity 4 can splice new and old paper with different thicknesses, and the paper splicing device is high in flexibility and wide in application range;

the lapping rollers 4023 in the two lapping assemblies 402 are driven by the motor to rotate in opposite directions in the lapping process, so that the new paper and the old paper are lapped in an engaged manner.

Wherein, the removal dish 202 among the paper mechanism 2 of rectifying is the I shape structure, disc 203 joint is in the excircle recess of removal dish 202, makes disc 203 rotate on removing dish 202 excircle, avoids disc 203 to rotate along with removing the rotation of dish 202.

Wherein, be provided with conveying roller set 3 between paper mechanism 2 and the overlap joint chamber 4 of rectifying, conveying roller set 3 sets up under the 4 paper feed inlets in overlap joint chamber, conveying roller set 3 comprises three transfer roller, and three transfer roller is the regular triangle structure and arranges, and leaves the clearance that the paper passed between the three transfer roller, through the overlap joint of three transfer roller, can realize new, the synchronous line of walking fast of old paper.

Example 2

Referring to fig. 6, the present embodiment is substantially the same as the embodiment of embodiment 1, except that an edge trimming mechanism 5 is fixedly disposed on the lap joint table 1, the edge trimming mechanism 5 is located at the rear end of the lap joint chamber 4 along the paper advancing direction, a second air cylinder 501 of the edge trimming mechanism 5 is fixedly disposed at the top of the lap joint table 1, a first U-shaped plate frame 502 is fixedly disposed at the end of a piston rod of the second air cylinder 501, a third screw 503 is disposed inside the first U-shaped plate frame 502, the thread directions of the two ends of the third screw 503 along the center line direction are opposite, three nut seats 504 are symmetrically disposed at the two ends of the third screw 503, an edge trimming motor 505 is disposed at the bottom of the third nut seat 504, and an edge trimming wheel disc is disposed at the output end of the edge trimming motor 505.

When the device is used, the piston rod is driven by the second air cylinder 501 to push the first U-shaped plate frame 502 to move in the vertical direction, the first U-shaped plate frame 502 drives the trimming wheel disc to abut against lapped paper, the third screw 503 is driven by the motor to rotate, the third screw 503 drives the third nut seats 504 at the two ends to move oppositely or reversely, the two ends of the trimming wheel disc are adjusted in distance, and the trimming wheel disc is driven by the trimming motor 505 to trim the paper;

the trimming mechanism 5 is arranged to perform double-side trimming on the overlapped paper, namely the trimming mechanism 5 is used for synchronously trimming two sides of the paper, and the trimming efficiency is high.

Example 3

Referring to fig. 7-8, this embodiment is substantially the same as the embodiment of example 1, except that clamping mechanisms 6 for fixing paper sheets are disposed on the overlap joint table 1 and on both sides of the trimming mechanism 5, a screw rod four 601 of the clamping mechanism 6 is disposed on the back of the riser of the overlap joint table 1, the screw rod four 601 has opposite thread directions along both ends of the center direction, nut seats four 602 are symmetrically disposed on both ends of the screw rod four 601 through thread connection, a support rod frame is disposed on the front of the nut seats four 602, a clamping roller 603 is connected to the support rod frame through the vertical groove on the front of the overlap joint table 1, a shearing mechanism 7 is disposed between the two clamping mechanisms 6, a slide rod is disposed at one end of each of two shearing arms of the shearing mechanism 7, a slide rod 703 is disposed through the C701 on the front of the overlap joint table 1, and a profiled groove 702 is disposed on each of the slide rods 703 of the two shearing arms, the other ends of the two shearing arms of the shearing mechanism 7 are hinged with a connecting plate 706, the other end of the connecting plate 706 is hinged on a nut seat five 705, and the nut seat five 705 is connected to a screw rod five 704 in a sliding manner;

when the paper cutting machine is used, paper is clamped in the conveying process through the two clamping mechanisms 6, and the clamped paper is cut by the cutting mechanism 7;

when the two clamping mechanisms 6 work, the screw rod four 601 is driven to rotate by the motor, so that the screw rod four 601 drives the nut seat four 602 at the two ends to move oppositely, the two clamping rollers 603 move oppositely, and paper is clamped;

when the shearing mechanism 7 is used, the screw rod five 704 is driven to rotate by the motor, the screw rod five 704 drives the nut seat five 705 to move in the horizontal direction, the nut seat five 705 drives the connecting plate 706 to act on the two shearing arms, and the sliding rods 703 at the other ends of the two shearing arms slide in the C-shaped groove 701 in the opposite direction, so that the paper is sheared by the shearing knives 702 on the shearing arms.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the utility model. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (10)

1. The utility model provides an automatic bridging device of stock form, includes overlap joint platform (1), be provided with paper tray support frame (101) that are used for new, old paper tray to erect on overlap joint platform (1), a serial communication port, paper tray support frame (101) inboard that supply new, old paper tray to erect on overlap joint platform (1) all is provided with paper mechanism (2) of rectifying, and paper on the new paper tray and the paper on the old paper tray all send into overlap joint chamber (4) through paper mechanism (2) of rectifying, overlap joint chamber (4) inside is provided with and is used for new, old paper lapped overlap joint subassembly (402).

2. The automatic lapping device for the roll paper as claimed in claim 1, wherein the receiving plate (205) of the paper deviation correcting mechanism (2) is fixedly arranged on a vertical plate of the lapping table (1), the receiving plate (205) is of an arc structure, guide grooves (206) are longitudinally arranged on two sides of the surface of the receiving plate (205), a first screw (201) is arranged on the inner side of a concave surface of the receiving plate (205), the first screw (201) is fixedly arranged on the vertical plate, the thread directions of two ends of the first screw (201) are opposite, two ends of the first screw (201) are symmetrically provided with moving discs (202) through thread connection, the moving discs (202) at two ends are rotatably connected with circular discs (203), the outer circumferential surface of the circular disc (203) is provided with a connecting rod (204), the connecting rod (204) penetrates through the guide grooves (206) of the receiving plate (205) to be connected with the deviation correcting plate (207), the correcting plate (207) is of an arc-shaped structure, and the concave surface of the correcting plate (207) is matched with the convex surface of the bearing plate (205).

3. An automatic lap joint device for roll paper according to claim 2, characterized in that said moving plate (202) is of an I-shaped structure, and said circular plate (203) is clamped in the external circular groove of the moving plate (202).

4. The automatic paper roll lapping device according to claim 1, wherein the paper disc support frame (101) comprises a base (1011) fixedly arranged on the bottom plate of the lapping table (1), slide rails (1013) are arranged on two sides of the top surface of the base (1011), a paper disc mounting roller (1012) for mounting the paper feeding disc is slidably connected on the slide rails (1013) of the base (1011), a first air cylinder (1014) is fixedly arranged on the top of the end surface of the base (1011), and a piston rod of the first air cylinder (1014) is fixedly connected with the side surface of the paper disc mounting roller (1012).

5. The automatic lapping device for the roll paper as claimed in claim 1, wherein a conveying roller set (3) is arranged between the paper deviation correcting mechanism (2) and the lapping cavity (4), the conveying roller set (3) is arranged right below the paper feeding hole of the lapping cavity (4), the conveying roller set (3) is composed of three conveying rollers which are arranged in a regular triangle structure, and gaps for the paper to pass through are reserved among the three conveying rollers.

6. The automatic lapping device for the roll paper as claimed in claim 1, wherein the lapping cavity (4) is of a four-frame structure, lapping components (402) are symmetrically arranged on two inner transverse sides of the lapping cavity (4) along a center line direction, screw rods II (401) are arranged on two inner longitudinal sides of the lapping cavity (4), the screw thread directions of the screw rods II (401) along two ends of the center line direction are opposite, and connecting lugs (4022) on two sides of the lapping components (402) are in threaded connection with the screw rods II (401);

overlap joint subassembly (402) include C template (4021), the outside both sides of C template (4021) are fixed and are provided with engaging lug (4022), the inside of C template (4021) is provided with overlap joint roller (4023), the pivot one end that overlap joint roller (4023) erect is provided with the belt pulley, the lateral surface of C template (4021) is provided with the motor, and the output of motor passes through the belt and is connected with the belt pulley.

7. The automatic lapping device for the roll paper as claimed in claim 6, wherein the end parts of the second screw rods (401) at two sides of the lapping cavity (4) are provided with driven gears, the outside of the lapping cavity (4) is fixedly provided with a motor, the output shaft of the motor is provided with a driving gear penetrating through the lapping cavity (4), and the driving gear is connected with the driven gears at two sides through a gear belt.

8. The automatic lapping device for the roll paper as claimed in claim 1, wherein a trimming mechanism (5) is fixedly arranged on the lapping table (1), the trimming mechanism (5) is positioned at the rear end of the lapping cavity (4) along the paper advancing direction, a second air cylinder (501) of the trimming mechanism (5) is fixedly arranged at the top of the lapping table (1), a first U-shaped plate frame (502) is fixedly arranged at the end part of a piston rod of the second air cylinder (501), a third screw rod (503) is arranged inside the first U-shaped plate frame (502), the screwing directions of the third screw rod (503) at two ends along the center line direction are opposite, three nut seats (504) are symmetrically arranged at two ends of the third screw rod (503), a trimming motor (505) is arranged at the bottom of the third nut seat (504), and a trimming wheel disc is arranged at the output end of the trimming motor (505).

9. The automatic lapping device for the roll paper of claim 8, characterized in that clamping mechanisms (6) for fixing the paper are arranged on the lapping table (1) and positioned at two sides of the trimming mechanism (5), a screw rod four (601) of each clamping mechanism (6) is arranged on the back surface of a vertical plate of the lapping table (1), the screw rod four (601) is oppositely threaded along the central direction, two ends of the screw rod four (601) are symmetrically provided with a nut seat four (602) through threaded connection, the front surface of the nut seat four (602) is provided with a support rod frame, and a vertical groove of the support rod frame penetrating through the front surface of the lapping table (1) is connected with a clamping roller (603).

10. An automatic lapping device for roll paper according to claim 9, characterized in that a shearing mechanism (7) is arranged between two clamping mechanisms (6), one end of each of two shearing arms of the shearing mechanism (7) is provided with a sliding rod (703), the sliding rod (703) is arranged through a C-shaped groove (701) on the front surface of the lapping table (1), a shearing knife (702) is arranged on each sliding rod (703) of the two shearing arms, the other end of each of the two shearing arms of the shearing mechanism (7) is hinged with a connecting plate (706), the other end of the connecting plate (706) is hinged on a nut seat five (705), and the nut seat five (705) is slidably connected on a screw rod five (704).

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