CN112109381A

CN112109381A - Covering machine

Info

Publication number: CN112109381A
Application number: CN202011049515.2A
Authority: CN
Inventors: 余向斌; 蔡青楚
Original assignee: Wenzhou Xiangjie Technology Co ltd
Current assignee: Zhejiang hang Automation Technology Co.,Ltd.
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2020-12-22

Abstract

The invention discloses a covering machine, which comprises a facial tissue conveying part, a gluing part, a gray board conveying part and a covering welt part, wherein the covering welt part comprises a front conveying roller, a rear conveying roller and a brush roller arranged between the front conveying roller and the rear conveying roller, the brush roller is controlled and driven by an independent motor, and the covering machine is characterized in that: the middle of the device is provided with a conveying belt, the conveying belt performs intermittent conveying action during working, the surface of the conveying belt is provided with a vacuum suction hole, the surface paper conveying component and the gluing component are arranged on the paper advancing side of the conveying belt, the cover welting component is arranged on the paper discharging side behind the conveying belt, and the gray board conveying component conveys a gray board to the conveying belt to be attached to the surface paper during working. The invention has simple structure, improves the production speed and better ensures the cover quality.

Description

Covering machine

Technical Field

The invention relates to a covering machine for automatically covering a gray board.

Background

The facing machine is used for the production of front cover and edge covering of the gray board, the face paper is stuck to the front face of the gray board during working, and the periphery of the face paper is used for edge covering of the periphery of the gray board. The inventor applies patent No. 2020100313675 and patent name 'cover welting device' in 1 month in 2020, and solves the technical problems of high efficiency of cover welting and no need of specification adjustment for gray boards with different sizes, but the patent only aims at the cover welting part of a covering machine, and the covering machine also comprises a facial tissue conveying part, a gluing part, a gray board conveying part and the like, and how to form a simple and compact combination of the parts is firstly considered by the application. Secondly, in the cover machine in the prior art, the facial tissue conveying part generally utilizes feeder paper feeding, and when the feeder paper feeding is carried out on the facial tissue for carrying out the up-and-down sheet separating action, in order to ensure reliable sheet separation, strong air blowing is required between the upper and lower sheets of facial tissue, which easily causes inaccurate feeder paper feeding and influences the improvement of the production speed, and the inaccurate feeder paper feeding is the largest factor influencing the quality of the cover; in addition, the surface paper cannot be effectively corrected when being conveyed for gluing, so that the gray board and the surface paper cannot be well aligned, and the quality of the cover is also influenced; in addition, after the front and back edges of the ash plate are covered with the front and back edges of the surface paper, the left and right ends of the surface paper are also required to be covered with the left and right edges of the ash plate, and because the edge covering surface paper at the corner parts of the ash plate after the front and back edges are covered with the front and back edges can not be effectively compressed and shaped, the edge folding and loose phenomenon can occur to the edge covering surface paper at the corner parts which are not compressed and shaped when the left and right edges are covered, and the; and when the ash plate conveying component acts, the actions of conveying the ash plate out of the ash plate stacking and positioning frame and conveying the ash plate to be attached to the facial tissue can be completed only by respectively driving two sets of power mechanisms.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the cover sealing machine which is simple in structure, improves the production speed and better ensures the cover sealing quality.

The invention is completed by adopting the following technical scheme:

the utility model provides a covering machine, includes facial tissue conveying part, rubberizing part, hawk conveying part and front cover welt part, the brush roller in the middle of the conveying roller around front conveying roller, back conveying roller and locating is included to front cover welt part, and the brush roller is by independent motor control drive, its characterized in that: the middle of the device is provided with a conveying belt, the conveying belt performs intermittent conveying action during working, the surface of the conveying belt is provided with a vacuum suction hole, the surface paper conveying component and the gluing component are arranged on the paper advancing side of the conveying belt, the cover welting component is arranged on the paper discharging side behind the conveying belt, and the gray board conveying component conveys a gray board to the conveying belt to be attached to the surface paper during working.

The facial tissue conveying component comprises a facial tissue stacking positioning frame, a front suction nozzle and a rear suction nozzle, wherein the front suction nozzle and the rear suction nozzle are arranged above the facial tissue stacking positioning frame, the facial tissue stacking positioning frame performs up-down lifting action, the rear suction nozzle performs paper sucking and discharging action on the front portion of the facial tissue and performs paper feeding when working, and the front suction nozzle only performs paper sucking and discharging action on the rear portion of the facial tissue when working.

The front suction nozzle is movably arranged on the rear support, the front suction nozzle is movably pushed by the suction nozzle cylinder, the front side of the front suction nozzle is movably provided with a paper pressing block, the paper pressing block can be obliquely and movably arranged on the rear support, the oblique movement of the paper pressing block is pushed by the paper pressing cylinder, and the paper pressing block is arranged beside the paper pressing block and is separated from the paper pressing cylinder to blow.

The rear suction nozzles are arranged on the transverse plates in rows, the transverse plates can be overturned to be arranged on the swing arms, the transverse plates are overturned to be pushed by the transverse plate cylinders, the swing arms swing back and forth, the swing arms are pushed by the swing arm cylinders, and the front and back of the swing arms are provided with the face paper front-separating blowing nozzles below the rear suction nozzles.

The facial tissue conveying part also comprises a paper feeding roller and a paper pressing roller for receiving the back suction nozzle to send out facial tissue, the paper feeding roller is rotatably arranged on the frame wallboard and driven by power, the paper pressing roller is arranged above the paper feeding roller, a plurality of rubber rings are arranged side by side on the left side and the right side of the surface of the paper pressing roller, the shaft end of the paper pressing roller is rotatably connected with a supporting sleeve, the bottom of the supporting sleeve is supported by a supporting plate, the supporting plate is pushed by a supporting plate cylinder to move up and down, the outer side end of the supporting sleeve is provided with an adjusting shaft, the adjusting shaft is rotatably arranged on the frame wallboard, the adjusting shaft and the opposite end surface of the supporting sleeve are provided with a linear groove and a linear.

The ash plate conveying component comprises an ash plate stacking positioning frame, an ash plate bracket is arranged at the front end of the ash plate stacking positioning frame in an extending mode, a paper pushing block is arranged below the ash plate stacking positioning frame, an ash plate suction nozzle is arranged above the ash plate bracket and can be movably arranged on the movable support up and down, the movable support is movably arranged in the front and back direction, and the paper pushing block moves in the front and back direction along with the movable support.

The front and back movement of the movable support is driven by a servo motor, a rack is fixedly arranged on the movable support, a gear is arranged on a motor shaft of the servo motor, and the gear is in transmission engagement with the rack.

The paper pushing block is connected to the turnover plate, the top of the paper pushing block is higher than the turnover plate, the turnover plate is supported by the front shaft rod and the rear shaft rod, the front shaft rod enables the turnover plate to be turned over around the front shaft rod, the rear shaft rod enables the turnover plate to be turned over and limited, and the two ends of the front shaft rod and the rear shaft rod are fixed on the movable support.

The left end and the right end of the paper feeding side of the front conveying roller and the paper discharging side of the rear conveying roller are respectively provided with a front angle pressing device and a rear angle pressing device which are used for pressing and shaping corner positions of the cover welts.

The front angle pressing device and the rear angle pressing device have the same structure and comprise angle pressing seats and upper and lower idler wheels arranged on the angle pressing seats, the angle pressing seats are movably arranged left and right, and the angle pressing seats are pushed by angle pressing cylinders.

Above-mentioned technical scheme's covering machine, simple structure is compact, improves production speed, better guarantees the front cover quality, and concrete working process is: the front suction nozzle releases the facial tissue after the action is finished, the rear suction nozzle performs paper feeding action, and the facial tissue is sent to a paper feeding roller (the paper pressing roller is in a lifting state at the moment); in the action process, the front suction nozzle and the rear suction nozzle act cooperatively, so that not only is the reliable separation of the upper facial tissue and the lower facial tissue ensured, but also the accuracy of paper feeding is ensured, and the production speed is improved; when the front end of the facial tissue enters between the paper feeding roller and the paper pressing roller, the supporting plate moves downwards, the paper pressing roller moves downwards to be in contact with the paper feeding roller, the facial tissue is sent to the position below the gluing part along with the rotation of the paper feeding roller, the gluing roller is used for gluing the facial tissue and sending the facial tissue to the conveying belt, and the vacuum suction holes in the surface of the conveying belt are used for sucking the facial tissue under negative pressure, so that the facial tissue is reliably positioned on the conveying belt; then, with the intermittent conveying of the conveying belt, when the facial tissue reaches the middle position of the conveying belt, the gray board conveying component conveys the gray board to the conveying belt to be attached to the facial tissue on the conveying belt, after the attachment, the conveying belt continues to convey the facial tissue, and the facial tissue and the gray board are conveyed into the front cover edge attaching component; in the cover welting component, the front and rear conveying rollers convey the gray board and the facial tissue backwards, so that under the action of the brush roller, the front end of the facial tissue carries out front edge covering on the gray board, a rear angle pressing device reaching the angle pressing position carries out compression and shaping on the edge covering facial tissue at the corner part of the gray board of the front edge covering, then the front and rear conveying rollers reversely move, the gray board and the facial tissue retreat, under the action of the brush roller, the rear end of the facial tissue carries out rear edge covering on the gray board, then the front angle pressing device reaches the angle pressing position, and the edge covering facial tissue at the corner part of the gray board of the rear edge covering is compressed and shaped; after the actions are finished, the front and rear conveying rollers perform reverse actions again, the gray board and the facial tissue are conveyed out of the front part of the cover welting component, then the gray board and the facial tissue are conveyed leftwards or rightwards to enter the rear part of the cover welting component, the binding actions of the left end and the right end of the gray board by the left end and the right end of the facial tissue are performed, and finally the cover binding production of the gray board is finished; because the edge covering paper at the corner positions of the front and rear edge covering rear gray plates is effectively compressed and shaped before the left and right edge covering, the phenomena of corner wrinkling and untight edge covering can not occur during the left and right edge covering, and the quality of the cover is ensured; when the ash plate conveying component acts, the ash plate is conveyed out of the ash plate stacking positioning frame and is conveyed to the action of being attached to the facial tissue, the action can be completed only by the driving of one servo motor, the structure is simpler, and the conveying distance between the ash plate stacking positioning frame and the facial tissue conveying component is absolutely the same. In addition, in the facial tissue conveying action process of the paper feeding roller and the paper pressing roller, the arrangement of the plurality of rubber rings on the paper pressing roller can adapt to facial tissues with different sizes, the facial tissues with the smallest area can be always pressed by the rubber rings to ensure reliable paper feeding, so that the adjustment of the distance between the paper pressing rollers is not needed like the prior art, unnecessary operation is reduced, and the structure is simple; in addition, through the simple rotation of regulating spindle, can make the grafting direction of straight line recess, straight line lug change, because the dancer roll relies on the action of gravity to carry out the roll face contact with the roller of form advancing during operation, so along with the change of grafting direction, the axis of dancer roll relative the roller of form advancing also can take place the micro-offset of fore-and-aft direction, and then plays the effect of rectifying of facial tissue transport, simple structure, can finely align when laminating with the hawk after making the facial tissue rubber coating, guarantee the front cover quality.

Drawings

The invention has the following drawings:

figure 1 is a perspective view of the present invention,

figure 2 is a right side view of figure 1,

figure 3 is a longitudinal cross-sectional view of figure 1,

figure 4 is a schematic view of the structure of the tissue conveying component,

figure 5 is an enlarged view of a portion of figure 4,

figure 6 is a view of the front nozzle of figure 5 in a separate mounting configuration,

figure 7 is a bottom view in elevation of figure 6,

figure 8 is a view showing a separate installation structure of the paper feeding roller and the paper pressing roller in figure 5,

FIG. 9 is a schematic view showing the construction of the gray board conveying means,

fig. 10 is an enlarged structural view of the front pressure angle device in fig. 1.

Detailed Description

As shown in figures 1-3 and 10, the covering machine comprises a surface paper conveying component 1, an upper gluing component 2, a gray board conveying component 7 and a cover welt component, wherein the upper gluing component comprises a glue coating roller 14, a glue coating compression roller 12 is arranged on one side of the glue coating roller 14, a scraping plate 15 is arranged on the other side of the glue coating roller 14, a glue groove 13 is enclosed in an upper space where the glue coating roller 14 and the glue coating compression roller 12 are contacted, a conveying belt 3 is arranged in the middle of the covering machine and performs intermittent conveying action during working, a vacuum suction hole is formed in the surface of the conveying belt 3, the surface paper conveying component 1 and the upper gluing component 2 are arranged on the paper advancing side of the conveying belt 3, the cover welt component is arranged on the paper rear side of the conveying belt 3 and consists of a front part 5 and a rear part 6, the front part 5 is used for front and rear edge covering of a gray board, the rear part 6 is used for left and right, The rear conveying roller 18 and the brush roller 17 arranged between the front conveying roller and the rear conveying roller are controlled and driven by an independent motor; the front part 5 of the cover welt part, the paper feeding side of the front conveying roller 16 and the paper discharging side of the rear conveying roller 18 are respectively provided with a front corner pressing device 4 and a rear corner pressing device 19 which are used for pressing and shaping corner positions of cover welts at the left end and the right end, the front corner pressing device 4 and the rear corner pressing device 19 have the same structure and comprise a corner pressing seat 22, an upper roller 21 and a lower roller 23 which are arranged on the corner pressing seat 22, the separation distance between the upper roller 21 and the lower roller 23 is equal to the thickness of a gray board, the corner pressing seat 22 is movably arranged left and right, the corner pressing seat 22 is pushed by a corner pressing cylinder 20 to reach a working position, and is reset by a spring 24 to leave the working position; the ash plate conveying component 7 is arranged above the front part 5 of the cover welt component, and the ash plate conveying component 7 conveys the ash plate to the conveying belt 3 to be attached to the facial tissue when working.

As shown in fig. 4-8, the facial tissue conveying component includes a facial tissue stacking positioning frame 8, and a front suction nozzle 35 and a rear suction nozzle 9 which are arranged above the facial tissue stacking positioning frame, the facial tissue stacking positioning frame 8 is driven by a lifting servo motor to move up and down, the rear suction nozzle 9 performs a paper sucking and releasing action on the front portion of the facial tissue and feeds the facial tissue when in operation, and the front suction nozzle 35 performs a paper sucking and releasing action only on the rear portion of the facial tissue when in operation. The concrete structure is as follows: the front suction nozzle 35 is connected with a suction nozzle seat 41, the suction nozzle seat 41 is connected with a turnover shaft 40, the turnover shaft 40 is rotatably arranged on a rear support 32, the rear support 32 is fixedly arranged, the middle of the turnover shaft 40 is connected with a turnover block 42, the turnover block 42 is connected with a push rod of a suction nozzle cylinder 44, the suction nozzle cylinder 44 is arranged on the rear support 32, when the suction nozzle cylinder 44 works, the front suction nozzle 35 is pushed to perform the paper sucking and releasing action on the rear part of facial paper, the front side of the front suction nozzle 35 is provided with a paper pressing block 43, the paper pressing block 43 can be obliquely and movably arranged on the rear support 32, the paper pressing block 43 is connected with the push rod of the paper pressing cylinder 33, the paper pressing cylinder 33 is arranged on the rear support 32, when the paper pressing cylinder 33 works, the paper pressing block 43 is pushed to perform the paper pressing; the rear suction nozzles 9 are arranged on a transverse plate 30 in a row, the transverse plate 30 is arranged on a swing arm 25 in a turnover mode through a rotating shaft 29, the rotating shaft 29 is connected with a turnover arm 28, the turnover arm 28 is connected with a push rod of a transverse plate cylinder 26, the transverse plate cylinder 26 is installed on the swing arm 25, when the transverse plate cylinder 26 works, the transverse plate 30 is pushed to turn over, and then the rear suction nozzles 9 generate the paper sucking and releasing action on the front portion of facial paper, the swing arm 25 swings back and forth and is pushed by a swing arm cylinder 27, the rear suction nozzles 9 can generate the paper feeding action in the front and back direction through the swinging of the swing arm 25, and the.

The facial tissue conveying component also comprises a paper feeding roller 10 and a paper pressing roller 11 for receiving the back suction nozzle 9 to send facial tissue, the paper feeding roller 10 can be rotatably arranged on the wall board of the frame, the paper feeding roller 10 is driven by a motor, the paper pressing roller 11 is arranged above the paper feeding roller 10, a plurality of rubber rings 31 are arranged on the surface of the paper pressing roller 11 in parallel at the left and right, the shaft end of the paper pressing roller 11 can be rotatably connected with a supporting sleeve 37, the bottom of the supporting sleeve 37 is supported by a supporting plate 47, the supporting plate 47 is pushed by a supporting plate cylinder 48 to do up-and-down swinging motion, the outer side end of the supporting sleeve 37 is provided with an adjusting shaft 38, the adjusting shaft 38 can be rotatably arranged on the wall board of the frame, the outer circle of the adjusting shaft 38 is provided with a wrenching handle 39, the opposite end surfaces of the adjusting shaft 38 and the supporting sleeve 37, the linear projections 46 are slidably engaged with each other.

As shown in fig. 9, the ash plate conveying component 7 includes an ash plate stacking positioning frame 53 fixedly installed, an ash plate bracket 56 is extended from the front end of the ash plate stacking positioning frame 53, a paper pushing block 52 is arranged below the ash plate stacking positioning frame 53, an ash plate suction nozzle 57 is arranged above the ash plate bracket 56, the ash plate suction nozzle 57 is installed on a suction nozzle bracket 55, the suction nozzle bracket 55 can be movably installed on a movable bracket 60 up and down, the up and down movement of the suction nozzle bracket 55 is driven by a linear module 54, the movable bracket 60 is movably installed back and forth, the front and back movement of the movable bracket 60 is driven by a servo motor 59, a rack 61 is fixedly installed on the movable bracket 60, a gear 58 is installed on a motor shaft of the servo motor 59, and the gear 58 is in transmission engagement with the rack 61; the paper pushing block 52 moves back and forth along with the moving support 60, the paper pushing block 52 is connected to the turnover plate 51, the top of the paper pushing block is higher than the turnover plate, the turnover plate 51 is supported by a front shaft rod and a rear shaft rod, the front shaft rod 50 enables the turnover plate 51 to be turned over around the front shaft rod, the rear shaft rod 49 enables the turnover plate 51 to be turned over and limited, and the two ends of the front shaft rod 50 and the rear shaft rod 49 are fixed on the moving support 60. The working process of the ash plate conveying component is as follows: the servo motor 59 works to make the moving bracket 60 move forward, when the moving bracket 60 moves forward, the paper pushing block 52 pushes the bottommost ash plate in the ash plate stacking and positioning frame 53 forward to the ash plate bracket 56 to be supported by the ash plate bracket 56, meanwhile, the ash plate in the original ash plate bracket 56 is sucked by the ash plate suction nozzle 57 to be sent to the center of the conveying belt 3 to be attached to the facial tissue, when the moving bracket 60 moves backward, the top of the paper pushing block 52 touches the ash plate in the ash plate stacking and positioning frame 53, so that the paper pushing block 52 turns over, and the paper pushing block 52 can return to the original paper pushing position from the bottom of the ash plate to wait for the next ash plate pushing action.

The above-mentioned covering machine works like this: when the front cover works, firstly, the front suction nozzle 35 acts to suck and lift the rear part of the topmost piece of facial tissue in the facial tissue stacking positioning frame 8, and simultaneously, the rear separation air blowing 34 blows to enable the rear end of the facial tissue to be separated into upper and lower pieces, after the rear end of the facial tissue is separated into upper and lower pieces, the paper pressing block 43 is obliquely inserted to press the next piece of facial tissue, and during the period, the rear suction nozzle 9 also acts to suck and lift the front part of the topmost piece of facial tissue in the facial tissue stacking positioning frame 8, and simultaneously, the front separation air blowing 36 blows to enable the front end of the facial tissue to be separated into upper and lower pieces; after the above-mentioned movements are finished, the front suction nozzle 35 releases the facial tissue, the back suction nozzle 9 sucks the facial tissue alone to make the paper feeding movement, send the facial tissue to the feed roller 10 (the paper pressing roller 11 is in the state of lifting at this moment), after the front end of facial tissue enters between feed roller 10 and paper pressing roller 11, the back plate 47 moves downward, the paper pressing roller 11 moves downward and contacts with feed roller 10, with the rotation of the feed roller 10, the facial tissue is sent to the lower side of the gumming part, the gumming roller 14 is gummed to the facial tissue and under the scraping action of the scraping plate 15, send the facial tissue to the conveying belt 3, the vacuum suction hole on the surface of the conveying belt 3 carries on the negative pressure to suck the facial tissue, make the facial tissue get the reliable location on the conveying belt 3; then, with the intermittent conveying of the conveying belt 3, when the facial tissue reaches the middle position of the conveying belt, the gray board conveying part 7 conveys the gray board to the conveying belt to be attached to the facial tissue on the conveying belt, after the attachment, the conveying belt 3 continues to convey the facial tissue, and the facial tissue and the gray board are conveyed to the front cover welting part; in the front part 5 of the cover welt component, firstly, a front conveying roller 16 and a rear conveying roller 18 convey an ash plate and a facial tissue backwards, then under the action of a brush roller 17, the front end of the facial tissue carries out front edge covering on the ash plate, a rear angle pressing device 19 reaching an angle pressing position carries out compression and shaping on the edge covering facial tissue at the corner part of the ash plate of the front edge covering, then the front and rear conveying rollers reversely move, the ash plate and the facial tissue retreat, under the action of the brush roller, the rear end of the facial tissue carries out rear edge covering on the ash plate, then the front angle pressing device 4 reaches the angle pressing position, and the edge covering facial tissue at the corner part of the ash plate of the rear edge covering is compressed and shaped; after the actions are completed, the front conveying roller and the rear conveying roller perform reverse actions again, the gray board and the facial tissue are conveyed out of the front part 5 of the cover welting component, then the gray board and the facial tissue are conveyed rightwards and enter the rear part 6 of the cover welting component, the edge covering actions of the left end and the right end of the gray board are performed by the left end and the right end of the facial tissue, and finally the cover edge covering production of the gray board is completed. In the process, the adjusting shaft 38 can be rotated by pulling the pulling handle 39, so that the axis of the paper pressing roller 11 generates micro offset in the front-back direction relative to the paper feeding roller 10, and the deviation rectifying effect of the facial tissue conveying is achieved, the facial tissue can be well aligned with the gray board after being glued, and the quality of the front cover is ensured.

Claims

1. The utility model provides a covering machine, includes facial tissue conveying part, rubberizing part, hawk conveying part and front cover welt part, the brush roller in the middle of the conveying roller around front conveying roller, back conveying roller and locating is included to front cover welt part, and the brush roller is by independent motor control drive, its characterized in that: the middle of the device is provided with a conveying belt, the conveying belt performs intermittent conveying action during working, the surface of the conveying belt is provided with a vacuum suction hole, the surface paper conveying component and the gluing component are arranged on the paper advancing side of the conveying belt, the cover welting component is arranged on the paper discharging side behind the conveying belt, and the gray board conveying component conveys a gray board to the conveying belt to be attached to the surface paper during working.

2. A covering machine as claimed in claim 1, characterized in that: the facial tissue conveying component comprises a facial tissue stacking positioning frame, a front suction nozzle and a rear suction nozzle, wherein the front suction nozzle and the rear suction nozzle are arranged above the facial tissue stacking positioning frame, the facial tissue stacking positioning frame performs up-down lifting action, the rear suction nozzle performs paper sucking and discharging action on the front portion of the facial tissue and performs paper feeding when working, and the front suction nozzle only performs paper sucking and discharging action on the rear portion of the facial tissue when working.

3. A covering machine as claimed in claim 2, wherein: the front suction nozzle is movably arranged on the rear support, the front suction nozzle is movably pushed by the suction nozzle cylinder, the front side of the front suction nozzle is movably provided with a paper pressing block, the paper pressing block can be obliquely and movably arranged on the rear support, the oblique movement of the paper pressing block is pushed by the paper pressing cylinder, and the paper pressing block is arranged beside the paper pressing block and is separated from the paper pressing cylinder to blow.

4. A covering machine as claimed in claim 2, wherein: the rear suction nozzles are arranged on the transverse plates in rows, the transverse plates can be overturned to be arranged on the swing arms, the transverse plates are overturned to be pushed by the transverse plate cylinders, the swing arms swing back and forth, the swing arms are pushed by the swing arm cylinders, and the front and back of the swing arms are provided with the face paper front-separating blowing nozzles below the rear suction nozzles.

5. A covering machine as claimed in claim 2, wherein: the facial tissue conveying part also comprises a paper feeding roller and a paper pressing roller for receiving the back suction nozzle to send out facial tissue, the paper feeding roller is rotatably arranged on the frame wallboard and driven by power, the paper pressing roller is arranged above the paper feeding roller, a plurality of rubber rings are arranged side by side on the left side and the right side of the surface of the paper pressing roller, the shaft end of the paper pressing roller is rotatably connected with a supporting sleeve, the bottom of the supporting sleeve is supported by a supporting plate, the supporting plate is pushed by a supporting plate cylinder to move up and down, the outer side end of the supporting sleeve is provided with an adjusting shaft, the adjusting shaft is rotatably arranged on the frame wallboard, the adjusting shaft and the opposite end surface of the supporting sleeve are provided with a linear groove and a linear.

6. A covering machine as claimed in claim 1, characterized in that: the ash plate conveying component comprises an ash plate stacking positioning frame, an ash plate bracket is arranged at the front end of the ash plate stacking positioning frame in an extending mode, a paper pushing block is arranged below the ash plate stacking positioning frame, an ash plate suction nozzle is arranged above the ash plate bracket and can be movably arranged on the movable support up and down, the movable support is movably arranged in the front and back direction, and the paper pushing block moves in the front and back direction along with the movable support.

7. A covering machine as claimed in claim 6, wherein: the front and back movement of the movable support is driven by a servo motor, a rack is fixedly arranged on the movable support, a gear is arranged on a motor shaft of the servo motor, and the gear is in transmission engagement with the rack.

8. A covering machine as claimed in claim 6, wherein: the paper pushing block is connected to the turnover plate, the top of the paper pushing block is higher than the turnover plate, the turnover plate is supported by the front shaft rod and the rear shaft rod, the front shaft rod enables the turnover plate to be turned over around the front shaft rod, the rear shaft rod enables the turnover plate to be turned over and limited, and the two ends of the front shaft rod and the rear shaft rod are fixed on the movable support.

9. A covering machine as claimed in claim 1, characterized in that: the left end and the right end of the paper feeding side of the front conveying roller and the paper discharging side of the rear conveying roller are respectively provided with a front angle pressing device and a rear angle pressing device which are used for pressing and shaping corner positions of the cover welts.

10. A covering machine as claimed in claim 9, wherein: the front angle pressing device and the rear angle pressing device have the same structure and comprise angle pressing seats and upper and lower idler wheels arranged on the angle pressing seats, the angle pressing seats are movably arranged left and right, and the angle pressing seats are pushed by angle pressing cylinders.