CN218841262U

CN218841262U - A anti-exhibition paper-back-up device that rolls up for sheet-fed

Info

Publication number: CN218841262U
Application number: CN202223092188.6U
Authority: CN
Inventors: 赖志小; 张海峰; 许伟锋; 毛民楷; 戴晓琼; 吴伟泉
Original assignee: Shanghai Jin Ye Packaging Materials Co ltd; Shanghai Spinning Dyeing Printing Packaging Co ltd; Shanghai Spinning Dyeing Lifeng Printing Packaging Co ltd
Current assignee: Shanghai Jin Ye Packaging Materials Co ltd; Shanghai Spinning Dyeing Printing Packaging Co ltd; Shanghai Spinning Dyeing Lifeng Printing Packaging Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-04-11
Anticipated expiration: 2032-11-21

Abstract

The utility model discloses a turn up exhibition paper-back installation for sheet-fed, including frame, feed inlet, turn up unit and receipts material unit. The frame comprises a lower bracket and an upper bracket; the upper bracket includes two wall panels longitudinally fixed in parallel on the top surface of the lower bracket. The feed inlet is formed by enclosing the upper parts of the paper baffle plate, the supporting plate and the two wallboards; the paper blocking plate is installed on the height adjusting mechanism. The back-rolling unit comprises a driving belt mechanism and a driven belt mechanism; the driving belt mechanism comprises a driving belt wound on a driving roller, a paper supporting roller, a reverse winding roller, a guide roller and a driving tensioning roller; the driven belt mechanism comprises a driven belt wrapped on an upper guide roller, a reverse winding roller, an adjustable wrap angle roller, a lower guide roller and a driven tensioning roller; the adjustable wrap angle roller is arranged on the wrap angle adjusting mechanism. The material receiving unit comprises a front baffle, a rear baffle, an adjustable material receiving plate, a material supporting mechanism and a material pushing mechanism. The utility model discloses can not only guarantee the roughness of the sheet-fed of different crimpnesses, can also improve machining efficiency.

Description

A anti-exhibition paper-back-up device that rolls up for sheet-fed

Technical Field

The utility model relates to a flat device of anti-exhibition of rolling up for sheet-fed.

Background

The printing base paper includes a flat paper and a web. The paper used for printing is determined according to the printing process and the printing equipment. The paper is deformed and curled when the roll paper is stored for a certain time, and the curling of the paper is particularly serious near the drum core. Because the single paper formed by die cutting the roll paper close to the cylinder core is still seriously curled, the curled single paper is not smooth when secondary production is carried out on packaging equipment, and the normal secondary production can be influenced.

At present, two methods are used for solving the problem of single paper curling, one method is to place a curled paper board between two flat plates, press a heavy object and place for a certain time; this method of solving curling requires a long time; the other is that the curled paper board is pushed and pulled reversely by manpower; this solution to curl is inefficient and labor intensive.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect and provide a flat device of anti-exhibition of rolling up for sheet-fed, it can not only guarantee the sheet-fed roughness of different crimples degree, can also improve machining efficiency.

The purpose of the utility model is realized like this: a back-rolling flattening device for single paper comprises a frame, a feeding chamber, a back-rolling unit and a material receiving unit; wherein,

the frame comprises a lower bracket and an upper bracket; the lower bracket is a box-shaped frame; the upper bracket comprises two wall plates which are longitudinally fixed on the top surface of the lower bracket in parallel;

the feed inlet is formed by enclosing the upper parts of a paper baffle plate, a supporting plate and two wallboards; the paper blocking plate is fixed between the rear upper parts of the two wallboards through the height adjusting mechanism; the supporting plate is fixed between the upper parts of the rear ends of the two wallboards, and the horizontal distance from the supporting plate to the paper baffle plate is matched with the length of a single piece of cigarette box paper;

the reverse winding unit comprises a driving belt mechanism and a driven belt mechanism, wherein,

the driving belt mechanism comprises a driving belt, a driving roller, a paper supporting roller, a reverse winding roller, a guide roller and a driving tensioning roller, wherein the driving roller, the paper supporting roller, the reverse winding roller, the guide roller and the driving tensioning roller are all bridged between the two wallboards; the driving roller is arranged below the supporting plate, and one end of the driving roller is connected with an output shaft of the driving motor; the paper supporting roller is arranged in front of the driving roller and is positioned below the paper blocking plate; the reverse winding roller is arranged in front of the paper supporting roller; the guide roller is arranged at the front lower part of the driving roller; the driving tensioning roller is arranged below the rear part of the guide roller in a manner of moving up and down through a driving belt tensioning mechanism and is positioned below the driving roller; the driving belt firstly bypasses the driving roller clockwise from bottom to top, passes through the upper part of the paper supporting roller, then bypasses the reverse winding roller clockwise from top to bottom, bypasses the guide roller anticlockwise from top to bottom, and then bypasses the driving tensioning roller clockwise from bottom to top;

the driven belt mechanism comprises a driven belt, an upper guide roller, a reverse winding roller, an adjustable wrap angle roller, a lower guide roller and a driven tensioning roller, wherein the upper guide roller, the reverse winding roller, the adjustable wrap angle roller, the lower guide roller and the driven tensioning roller are all bridged between the two wallboards; the upper guide roller is arranged above the paper supporting roller; the lower guide roller is arranged below the reverse winding roller; the adjustable wrap angle roller is arranged between the reverse winding roller and the lower guide roller through a wrap angle adjusting mechanism, the diameter of the adjustable wrap angle roller is the same as that of the reverse winding roller, and the vertical distance from the adjustable wrap angle roller to the reverse winding roller is 1.5 times to 2 times of that of the reverse winding roller; the driven tensioning roller is arranged right in front of the reverse winding roller in a manner of being capable of moving back and forth through a driven belt tensioning mechanism; the driven belt firstly bypasses the upper guide roller from top to bottom anticlockwise, then bypasses the reverse winding roller from top to bottom clockwise and is coated outside the driving belt, then passes through the rear part of the adjustable angle-coating roller from top to bottom, then bypasses the lower guide roller from top to bottom anticlockwise, and finally bypasses the driven tensioning roller from bottom to top anticlockwise;

the feeding chamber is formed by enclosing a paper baffle plate, a supporting plate and two wallboards; the paper blocking plate is fixed between the rear upper parts of the two wallboards through the height adjusting mechanism and is positioned above the paper supporting roller of the driving belt mechanism, and the distance between the lower end of the paper blocking plate and the driving belt is larger than the thickness of a single paper and smaller than the thickness of two single papers through the height adjusting mechanism; the supporting plate is fixed between the upper parts of the rear ends of the two wallboards, and the distance from the supporting plate to the paper blocking plate is matched with the length of the single paper;

the receiving unit comprises a front baffle, a rear baffle, an adjustable receiving plate, a material supporting mechanism and a material pushing mechanism; the front baffle and the rear baffle are transversely fixed at the rear part in the lower support, the distance between the front baffle and the rear baffle is matched with the length of the single paper, the top ends of the front baffle and the rear baffle are respectively protruded out of the top surface of the lower support, and the upper part of the front baffle is bent forwards; the adjustable material receiving plate is arranged in the front upper part of the front baffle in a mode of being high in front and low in back, and the upper end of the adjustable material receiving plate is close to the lower guide roller; the material supporting mechanism comprises two cylinder seats and two material supporting cylinders; the cross section of the cylinder block is in an inverted L shape, and the two cylinder blocks correspondingly span between the middle tops and between the rear tops in the lower support one by one; two material supporting cylinders are horizontally fixed between the two cylinder seats, and piston rods of the two material supporting cylinders are inserted into two through holes formed in the front baffle in a one-to-one correspondence manner; the material pushing mechanism comprises two guide rails, a material pushing cylinder and a stacking plate; the two guide rails are transversely fixed at the bottom of the lower support and positioned between the front baffle and the rear baffle, the head parts, the middle parts and the tail parts of the two guide rails are positioned outside the left side of the lower support, inside the lower support and outside the right side of the lower support in a one-to-one correspondence manner, the head lengths and the tail lengths of the two guide rails are equal and at least equal to the width of a single sheet of paper, and a bottom plate is bridged between the tail parts of the two guide rails; the material pushing cylinder is fixed in the middle of the bottom plate; the length of the material piling plate is matched with the distance between the front baffle and the rear baffle, the width of the material piling plate is equal to the sum of the length of the middle part of the guide rail and the length of the head part or the tail part of the guide rail, the material piling plate is arranged on the two guide rails through two guide rail sliding blocks, and the middle part of the bottom surface of the material piling plate is connected with a piston rod of the material pushing cylinder.

In the above device for unrolling and flattening the single sheet of paper, the upper support further includes four support rods which are bridged between four corners of the two wall panels in a one-to-one correspondence manner.

The height adjusting mechanism comprises a threaded hole horizontally formed in the lower middle of the paper blocking plate, a fixing block which is bridged between the two wall plates and is provided with a vertical threaded hole and a longitudinal through hole, a hand-screwed screw rod fixedly inserted into the top of the paper blocking plate and in threaded connection with the vertical threaded hole of the fixing block, and a locking screw inserted into the longitudinal through hole of the fixing block and in threaded connection with the threaded hole of the paper blocking plate.

The above unwinding and flattening device for the sheet of paper, wherein the active belt tensioning mechanism comprises a pair of first slider seats, a pair of fixed seats, a pair of hollow adjusting bolts, a pair of positioning pins and a pair of springs; the first sliding block seats are correspondingly arranged at two ends of a mandrel of the driving tensioning roller one by one and are correspondingly arranged in vertical slot holes formed in the two wall plates one by one; the pair of fixed seats are symmetrically fixed on the outer side surfaces of the two wallboards and are positioned above the first sliding block seat; the pair of hollow adjusting bolts are in one-to-one correspondence threaded connection with threaded through holes vertically formed in the pair of fixing seats, and spring check rings are fixed at the bottoms of the pair of adjusting bolts; the pair of positioning pins are inserted into the inner holes of the pair of hollow adjusting bolts in a one-to-one corresponding manner, and the lower ends of the pair of positioning pins are fixedly inserted into pin holes formed in the top surfaces of the pair of first sliding block seats in a one-to-one corresponding manner; the pair of springs are sleeved on the pair of positioning pins in a one-to-one correspondence manner and are positioned between the spring retainer rings and the first sliding block seats; the structure of the passive belt tensioning mechanism is the same as that of the active belt tensioning mechanism.

The above device for unrolling and flattening the single sheet of paper, wherein the wrap angle adjusting mechanism comprises a pair of second slider seats, a pair of moving nuts, a pair of stepping motors and a pair of adjusting screws; the pair of second sliding block seats are fixed at two ends of a mandrel of the adjustable angle wrapping roller in a one-to-one corresponding mode and are arranged in transverse slotted holes formed in the two wall plates in a one-to-one corresponding mode; the pair of movable nuts are fixed on the outer side surfaces of the pair of second sliding block seats in a one-to-one correspondence manner; the pair of stepping motors are transversely fixed on the outer side surfaces of the two wallboards in a one-to-one correspondence manner and are positioned in front of the second sliding block seats; the front ends of the pair of adjusting screw rods are connected with the output shafts of the pair of stepping motors in a one-to-one correspondence mode.

The utility model discloses a flat device of anti-exhibition of rolling up for sheet-fed has following characteristics:

1. by arranging the feeding hole, stacked single sheets can conveniently enter the reverse rolling unit smoothly, and the paper blocking plate forming the feeding hole is arranged on the height adjusting mechanism, so that the single sheets can enter the reverse rolling unit one by one to be reversely rolled and flattened;

2. the anti-rolling unit is formed by the driving belt mechanism and the driven belt mechanism together, the single paper is conveyed by the driving belt and the driven belt together, so that the single paper is rolled on the anti-rolling roller which is wound by the driving belt and the driven belt, the adjustable angle-wrapping roller is arranged on the driven belt mechanism, the position of the adjustable angle-wrapping roller can be adjusted according to the rolling degree of the single paper, the wrapping angle of the driven belt to the anti-rolling roller can be adjusted, the anti-rolling effect of the anti-rolling roller is improved, the flatness of the single paper with different rolling degrees is ensured, and the secondary processing quality of the single paper can be improved;

3. by arranging the material receiving unit, the single sheets of paper flattened by the reverse winding unit can be continuously piled into a stack, and the stack of paper can be taken away under the condition that the reverse winding unit does not need to be stopped, so that the processing efficiency can be improved.

Drawings

FIG. 1 is a side view of the present invention showing a reverse-rolling and flattening apparatus for a sheet of paper;

FIG. 2 isbase:Sub>A view from A-A of FIG. 1;

FIG. 3 is a view from the B-B direction of FIG. 1;

FIG. 4 is a view taken along line C-C of FIG. 1;

fig. 5 is a schematic diagram of the operation of the reverse-rolling and flattening device for the sheet of paper of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1 to 5, the present invention relates to a device for unrolling and flattening a sheet of paper; comprises a frame, a feed inlet 2, a reverse rolling unit and a material receiving unit.

The frame comprises a lower bracket 1A and an upper bracket 1B; wherein, the lower support 1A is a box-shaped frame and comprises four upright posts, two lower cross rods, two lower longitudinal rods, two upper cross rods and two upper longitudinal rods; the upper support 1B comprises two wall plates 10 longitudinally fixed between the left ends of the two upper cross rods of the lower support 1A and between the right ends of the two upper cross rods and four support rods 11 which are correspondingly spanned between the four corners of the two wall plates one by one; the distance between the two wall panels 10 is at least equal to the width of the single sheet of paper 10 a.

The feed inlet 2 is surrounded by a paper baffle plate 21, a supporting plate 22 and the upper parts of the two wallboards 10; the paper blocking plate 21 is fixed between the upper rear portions of the two wall plates 10 through the height adjusting mechanism, and the supporting plate 22 is fixed between the upper rear ends of the two wall plates 10 through the two supporting feet 220, and the horizontal distance from the supporting plate 21 to the upper rear ends of the two wall plates is matched with the length of the single paper 10 a.

The cross section of the paper blocking plate 21 is in an inverted L shape, the left side and the right side of the horizontal part of the paper blocking plate 21 are respectively provided with a through hole, and the front side surface of the left side of the middle part and the front side surface of the right side of the middle part of the vertical part of the paper blocking plate 21 are respectively provided with a threaded blind hole;

the height adjusting mechanism comprises a supporting rail 23, two hand-screwed screw rods 24 and two locking screws 25; wherein, the brace 23 is bridged between the two wallboards 10 and leans against the front side of the vertical part of the paper baffle board 21, the left side and the right side of the top surface of the brace 23 are respectively provided with a threaded through hole, and the left side and the right side of the front side of the brace 23 are respectively provided with a vertical waist-shaped longitudinal through hole; the upper parts of the two hand-screwed screws 24 are respectively fixedly inserted into two through holes on the horizontal part of the paper blocking plate 21 through a locking nut 240 in a one-to-one correspondence manner, and the lower ends of the two hand-screwed screws 24 are in threaded connection with two threaded through holes on the supporting stop 23 in a one-to-one correspondence manner; two locking screws 25 are inserted into two longitudinal through holes of the supporting bar 23 in a one-to-one correspondence and are screwed into two threaded blind holes of the paper blocking plate 21.

The rewinding unit comprises an active belt mechanism and a passive belt mechanism, wherein,

the driving belt mechanism comprises a driving belt 3, a driving roller 3a, a paper supporting roller 3b, a reverse winding roller 3c, a guide roller 3d and a driving tensioning roller 3e which are all bridged between the two wallboards 10; the driving roller 3a is arranged below the supporting plate 22, and one end of the driving roller is connected with an output shaft of the driving motor 30; the paper supporting roller 3b is arranged in front of the driving roller 3a and is positioned below the paper blocking plate 21; the reverse winding roller 3c is arranged in front of the paper supporting roller 3 b; the guide roller 3d is arranged in front of and below the driving roller 3 a; the driving tension roller 3e is arranged below the rear part of the guide roller 3d and below the driving roller 3a in a manner of moving up and down through a driving belt tension mechanism;

the driving belt 3 firstly bypasses the driving roller 3a clockwise from bottom to top, passes through the upper part of the paper supporting roller 3b, then bypasses the reverse winding roller 3c clockwise from top to bottom, then bypasses the guide roller 3d anticlockwise from top to bottom, and then bypasses the driving tensioning roller 3e clockwise from bottom to top; since the driving roller 3a is connected to the driving motor 30, the driving motor 30 can drive the driving roller 3a to rotate, and the driving roller 3a drives the driving belt 3 to rotate.

The active belt tensioning mechanism comprises a pair of first slider seats 31, a pair of fixed seats 32, a pair of hollow adjusting bolts 33, a pair of positioning pins 34 and a pair of springs 35; wherein,

the pair of first sliding block seats 31 are correspondingly arranged at two ends of a mandrel of the driving tensioning roller 3f one by one and are correspondingly arranged in vertical slotted holes formed in the two wall plates 10 one by one; a pair of fixed seats 32 are symmetrically fixed on the outer side surfaces of the two wall plates 10 and positioned above the first slide block seat 31; the pair of hollow adjusting bolts 33 are in one-to-one correspondence threaded connection with threaded through holes vertically formed in the pair of fixing seats 32, and the bottoms of the pair of hollow adjusting bolts 33 are respectively fixed with a spring retainer ring 330; a pair of positioning pins 34 are inserted into the inner holes of the pair of hollow adjusting bolts 33 in a one-to-one correspondence manner, and the lower ends of the pair of positioning pins 34 are fixedly inserted into pin holes formed in the top surfaces of the pair of first slider seats 31 in a one-to-one correspondence manner; a pair of springs 35 are sleeved on the pair of positioning pins 34 in a one-to-one correspondence between the spring retainer 330 and the first slider seat 31.

The driven belt mechanism comprises a driven belt 4, an upper guide roller 4a, a reverse winding roller 3c, an adjustable wrap angle roller 4b, a lower guide roller 4c and a driven tensioning roller 4d which are all bridged between the two wallboards 10; the upper guide roller 4a is arranged in front of and above the paper supporting roller 3 b; the lower guide roller 4c is arranged below the reverse winding roller 3 c; the adjustable wrap angle roller 4b is arranged between the reverse winding roller 3c and the lower guide roller 4c through a wrap angle adjusting mechanism, the diameter of the adjustable wrap angle roller 4b is the same as that of the reverse winding roller 3c, and the vertical distance from the adjustable wrap angle roller 4b to the reverse winding roller 3c is 1.5 times to 2 times of that of the reverse winding roller 3 c; the driven tension roller 4d is arranged right in front of the reverse winding roller 3c in a manner of moving back and forth through a driven belt tensioning mechanism;

the passive belt 4 firstly winds around the upper guide roller 4a from top to bottom anticlockwise, then winds around the reverse winding roller 3c from top to bottom clockwise and wraps the active belt 3, then passes through the rear part of the adjustable angle wrapping roller 4b from top to bottom anticlockwise, then winds around the lower guide roller 4c from top to bottom anticlockwise, and finally winds around the passive tension roller 4d from bottom to top anticlockwise.

The wrap angle adjusting mechanism comprises a pair of second slider seats 41, a pair of moving nuts 42, a pair of stepping motors 43 and a pair of adjusting screws 44; wherein, a pair of second sliding block seats 41 are fixed at two ends of the mandrel of the adjustable angle wrapping roller 4b in a one-to-one correspondence manner and are arranged in the transverse slotted holes arranged on the two wall plates 10 in a one-to-one correspondence manner; a pair of moving nuts 42 are fixed on the outer side surfaces of the pair of second slider holders 41 in a one-to-one correspondence; a pair of stepping motors 43 are transversely fixed on the outer side surfaces of the two wall plates 10 in a one-to-one correspondence manner and positioned in front of the second slider seats 41; a pair of adjusting screws 44 are screwed to the pair of moving nuts 42 in a one-to-one correspondence, and the front ends of the pair of adjusting screws 44 are connected to the output shafts of the pair of stepping motors 43 in a one-to-one correspondence; the front and back positions of the adjustable wrap angle roller 4b can be adjusted through the wrap angle adjusting mechanism, and then the wrap angle of the driven belt 4 to the reverse winding roller 3c can be adjusted.

The structure of the passive belt tensioning mechanism is the same as that of the active belt tensioning mechanism;

the material receiving unit comprises a front baffle 51, a rear baffle 52, an adjustable material receiving plate 53, a material supporting mechanism and a material pushing mechanism; wherein,

the front baffle 51 and the rear baffle 52 are transversely fixed at the rear part in the lower bracket 1A, the distance between the front baffle 51 and the rear baffle 52 is matched with the length of the single sheet of paper 10a, the top ends of the front baffle 51 and the rear baffle 52 are both positioned in the middle of the height of the two wall plates 10, and the upper part of the front baffle 51 is bent forwards; the adjustable material receiving plate 53 is arranged at the front upper part of the front baffle 51 in a mode of front height and back height, so that the upper end of the adjustable material receiving plate 53 is close to the lower guide roller 4c; the adjustable receiving plate 53 can guide the single paper from the lower guide roller 4c into the space between the front baffle 51 and the rear baffle 52;

the material supporting mechanism comprises two cylinder seats 54 and two material supporting cylinders 55; the cross section of the cylinder block 54 is in an inverted L shape, and the two cylinder blocks 54 are correspondingly bridged between the middle tops and the rear tops in the lower bracket 1A one by one; the two material supporting cylinders 54 are horizontally fixed between the two cylinder seats 55, and piston rods of the two material supporting cylinders 54 are inserted into two through holes formed in the front baffle plate 51 in a one-to-one correspondence manner;

the material pushing mechanism comprises two guide rails 56, a material pushing cylinder 58 and a stacking plate 59; wherein,

the two guide rails 56 are transversely fixed at the bottom of the lower bracket 1A and positioned between the front baffle 51 and the rear baffle 52, the head parts, the middle parts and the tail parts of the two guide rails 56 are positioned outside the left side of the lower bracket 1A, inside the lower bracket 1A and outside the right side of the lower bracket 1A in one-to-one correspondence, the head parts and the tail parts of the two guide rails 56 are equal in length and at least equal to the width of a single cigarette case paper 10a, and a bottom plate 57 is bridged between the tail parts of the two guide rails 56; the material pushing cylinder 58 is fixed in the middle of the bottom plate 57; the length of the stacking plate 59 is matched with the distance between the front baffle plate 51 and the rear baffle plate 52, the width of the stacking plate 59 is equal to the sum of the length of the middle part of the guide rail 56 and the length of the head part or the tail part of the guide rail 56, the stacking plate 59 is arranged on the two guide rails 56 through two pairs of guide rail slide blocks 560, and the middle part of the bottom surface of the stacking plate 59 is connected with a piston rod of the material pushing cylinder 58.

The utility model discloses a flat device of back-rolling exhibition for sheet-fed, at the during operation, pile up into paper buttress 100 with many sheet-fed 10a, and put into feed inlet 2 with paper buttress 100, make the front end bottom of paper buttress 100 place on initiative belt 3, the preceding terminal surface of paper buttress 100 supports and leans on fender paper board 21, the rear end of paper buttress 100 is placed on layer board 22, adjust the interval of the lower extreme of fender paper board 21 to the surface of initiative belt 3 for 1.5 times of the thickness of sheet-fed 10a through height adjusting mechanism, make the bottom of paper buttress 100 can only be exported from the gap of fender paper board 21 lower extreme by initiative belt 3 at every turn with a sheet-fed 10a, all the other sheet-fed 10a are blocked by fender paper board 21, when a sheet-fed 10a of bottommost passes through fender paper board 21, the sheet-fed 10a of the top will fall on initiative belt 3, so circulation is reciprocal.

When the distance between the lower end of the paper blocking plate 21 and the surface of the driving belt 3 is adjusted, the two locking screws 25 and the two locking nuts 240 on the two hand-screwed screws 24 are loosened, then the two hand-screwed screws 24 are rotated to enable the paper blocking plate 21 to move up and down to a proper position, and then the two locking nuts 240 on the two hand-screwed screws 24 and the two locking screws 25 are locked.

The driving roller 3a rotates clockwise to drive the driving belt 3 to rotate, the single paper 10a is output from a gap between the surface of the driving belt 3 and the lower end of the paper blocking plate 21, enters between the driving belt 3 and the driven belt 4, passes through the reverse winding roller 3c, is output into a flattened single paper 10a, the single paper 10a enters between the upper part of the front baffle 51 and the upper part of the rear baffle 52 through the adjustable material receiving plate 53, and then the flattened single paper 10a falls onto the rear half part of the material stacking plate 59 by self weight; when the single sheets 10a on the rear half part of the stacking plate 59 are stacked to a set number, the two material supporting cylinders 55 of the material supporting mechanism receive an instruction to push out the piston rods, so that the piston rods of the two material supporting cylinders 55 support the flattened single sheets 10a, meanwhile, the material pushing cylinder 58 of the material pushing mechanism receives an instruction to retract the piston rods, the rear half part of the stacking plate 59 is pulled backwards to the outside of the left side of the lower support 1A, the front half part of the stacking plate 59 is moved between the front baffle 51 and the rear baffle 52, and an operator can conveniently take down the single sheets 10a stacked on the rear half part of the stacking plate 59; and then the piston rods of the two material supporting cylinders 55 are instructed to retract, namely, the single sheets of paper 10a stacked on the piston rods of the two material supporting cylinders 55 are dropped onto the front half part of the stacking plate 59, the set number of the single sheets of paper 10a dropped onto the front half part of the stacking plate 59 is waited for again, and when the single sheets of paper 10a on the front half part of the stacking plate 59 are stacked to the set number, the material pushing cylinder 58 receives an instruction to extend the piston rods, the front half part of the stacking plate 59 is pushed out of the right side of the lower support 1A, namely, the rear half part of the stacking plate 59 is pushed between the front baffle 51 and the rear baffle 52, so that an operator can conveniently take down the single sheets of paper 10a stacked on the front half part of the stacking plate 59, and the operation is repeated in a circulating mode.

The unrolling and flattening of the sheet of paper 10a is determined by the diameter of the unrolling roller 3c and the wrap angle of the passive belt 4 to the unrolling roller 3 c. The utility model discloses the diameter design of anti-wind-up roll 3c is the fixed value, and designs into variable value through adjustable cornerite roller 4b with passive belt 4 to anti-wind-up roll 3 c's cornerite. When the adjustable angle-wrapping roller 4b does not contact the passive belt 4, that is, the wrap angle of the passive belt 4 to the reverse-winding roller 3c is small, the single sheet of paper 10A with severe curl does not reach the reverse-winding effect (see 10A in fig. 5); when the adjustable wrap angle roller 4b pushes the driven belt 4 to move backwards, namely the wrap angle of the driven belt 4 to the reverse winding roller 3c is gradually increased, the seriously curled single paper 10a tends to be flat; when the adjustable wrap angle roller 4B continuously moves backward against the driven belt 4 to a certain position, that is, the wrap angle of the driven belt 4 to the reverse winding roller 3c is larger than a certain value, the reverse winding of the sheet of paper 10a exhibits an excessive phenomenon (see 10B in fig. 5). The position of the adjustable hemming roller 4b can be set by measuring the actual curl of the sheet 10a before processing. The position of the adjustable angle wrapping roller 3b is adjusted by an angle wrapping adjusting mechanism, namely a pair of stepping motors 43 are controlled to rotate, and the adjustable angle wrapping roller 4b can be driven to move back and forth by the matching of a pair of adjusting screws 44 and a pair of moving nuts 43; the number of rotations of the pair of stepping motors 43 is set by the measured actual curl degree of the sheet of paper 10a before processing.

When the front and rear positions of the adjustable wrap angle roller 4b are adjusted, the tension of the active belt 3 and the tension of the passive belt 4 are influenced, and the active belt tensioning mechanism adjusts the upper and lower positions of the active tension roller 3e to control the tension of the active belt 3; a bearing 37 is respectively arranged between the two ends of the driving tension roller 3e and the mandrel 36 thereof, and the outer sides of the two bearings 37 are respectively provided with a positioning ring 28 locked by a screw to prevent the driving tension roller 3e from axially shifting; a pair of first slider seats 31 of the driving belt tensioning mechanism are correspondingly mounted on mandrels 36 on the outer sides of two positioning rings 38 one by one, after sliding gaps between the pair of first slider seats 31 and first vertical slotted holes in two wall plates 10 are adjusted, the pair of first slider seats 31 are correspondingly fixed by a pair of positioning pins 34 one by one, a pair of hollow adjusting bolts 33 are rotated, the pair of hollow adjusting bolts 33 can correspondingly compress a pair of springs 35 one by one when rotating downwards, the compression force of the pair of springs 35 enables the pair of first slider seats 31 to drive a driving tension roller 3e to move downwards, so that the driving belt 3 can be tensioned, elastic margins of an adjustable angle wrapping roller 4b when the driven belt 4 and the driving belt 3 are moved are reserved, and the pair of hollow adjusting bolts 33 are respectively locked by nuts 39 after adjustment.

The tension of the driven belt 4 is controlled by adjusting the front and rear positions of a driven tension roller 4d through a driven belt tensioning mechanism; the passive belt 4 is pressed against the active belt 3 on the rewind roll 3c at all times due to the spring action on the passive belt tensioning mechanism.

The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.

Claims

1. A back-rolling flattening device for single paper comprises a frame, a feed inlet, a feed chamber, a back-rolling unit and a material receiving unit; it is characterized in that the preparation method is characterized in that,

the frame comprises a lower bracket and an upper bracket; the lower support is a box-shaped frame; the upper bracket comprises two wall plates which are longitudinally fixed on the top surface of the lower bracket in parallel;

the driving belt mechanism comprises a driving belt, a driving roller, a paper supporting roller, a reverse winding roller, a guide roller and a driving tensioning roller, wherein the driving roller, the paper supporting roller, the reverse winding roller, the guide roller and the driving tensioning roller are all bridged between the two wallboards; the driving roller is arranged below the supporting plate, and one end of the driving roller is connected with an output shaft of the driving motor; the paper supporting roller is arranged in front of the driving roller and is positioned below the paper blocking plate; the reverse winding roller is arranged in front of the paper supporting roller; the guide roller is arranged in front of and below the driving roller; the driving tensioning roller is arranged below the rear part of the guide roller in a manner of moving up and down through a driving belt tensioning mechanism and is positioned below the driving roller; the driving belt firstly bypasses the driving roller clockwise from bottom to top, passes through the upper part of the paper supporting roller, then bypasses the reverse winding roller clockwise from top to bottom, bypasses the guide roller anticlockwise from top to bottom, and then bypasses the driving tensioning roller clockwise from bottom to top;

the driven belt mechanism comprises a driven belt, an upper guide roller, a reverse winding roller, an adjustable wrap angle roller, a lower guide roller and a driven tensioning roller, wherein the upper guide roller, the reverse winding roller, the adjustable wrap angle roller, the lower guide roller and the driven tensioning roller are all bridged between the two wallboards; the upper guide roller is arranged above the paper supporting roller; the lower guide roller is arranged below the reverse winding roller; the adjustable wrap angle roller is arranged between the rewind roller and the lower guide roller through a wrap angle adjusting mechanism, the diameter of the adjustable wrap angle roller is the same as that of the rewind roller, and the vertical distance from the adjustable wrap angle roller to the rewind roller is 1.5-2 times of the diameter of the rewind roller; the driven tensioning roller is arranged right in front of the reverse winding roller in a manner of moving back and forth through a driven belt tensioning mechanism; the driven belt firstly bypasses the upper guide roller from top to bottom anticlockwise, then bypasses the reverse winding roller from top to bottom clockwise and is coated outside the driving belt, then passes through the rear part of the adjustable angle-coating roller from top to bottom, then bypasses the lower guide roller from top to bottom anticlockwise, and finally bypasses the driven tensioning roller from bottom to top anticlockwise;

2. The unrolling and flattening device for a sheet of paper as claimed in claim 1, characterized in that the upper bracket also includes four braces spanning between the four corners of the two wall panels in a one-to-one correspondence.

3. The unrolling and flattening device for a sheet of paper as claimed in claim 1, characterized in that said height adjustment means comprise a threaded hole opened horizontally in the lower central part of said board, a fixed rail bridging between the two wall panels and having a vertical threaded hole and a longitudinal through hole, a hand-threaded screw fixedly inserted in the top of said board and screwed in the vertical threaded hole of the fixed rail, and a locking screw inserted in the longitudinal through hole of the fixed rail and screwed in the threaded hole in said board.

4. The unrolling and flattening device for a sheet of paper as claimed in claim 1, characterized in that the active belt tensioning mechanism comprises a pair of first slider seats, a pair of fixed seats, a pair of hollow adjusting bolts, a pair of positioning pins and a pair of springs; the pair of first sliding block seats are correspondingly arranged at two ends of a mandrel of the driving tensioning roller one by one and are correspondingly arranged in vertical slotted holes formed in the two wall plates one by one; the pair of fixed seats are symmetrically fixed on the outer side surfaces of the two wallboards and are positioned above the first sliding block seat; the pair of hollow adjusting bolts are in one-to-one correspondence threaded connection with threaded through holes vertically formed in the pair of fixing seats, and spring check rings are fixed at the bottoms of the pair of hollow adjusting bolts; the pair of positioning pins are inserted into the inner holes of the pair of hollow adjusting bolts in a one-to-one correspondence manner, and the lower ends of the pair of positioning pins are fixedly inserted into pin holes formed in the top surfaces of the pair of first sliding block seats in a one-to-one correspondence manner; the pair of springs are sleeved on the pair of positioning pins in a one-to-one correspondence manner and are positioned between the spring retainer rings and the first sliding block seats; the structure of the passive belt tensioning mechanism is the same as that of the active belt tensioning mechanism.

5. The unwinding and flattening device for the single sheet of paper according to claim 1, characterized in that the wrap angle adjusting mechanism includes a pair of second slider holders, a pair of moving nuts, a pair of stepping motors, and a pair of adjusting screws; the pair of second sliding block seats are fixed at two ends of a mandrel of the adjustable angle wrapping roller in a one-to-one corresponding mode and are arranged in transverse slotted holes formed in the two wall plates in a one-to-one corresponding mode; the pair of movable nuts are fixed on the outer side surfaces of the pair of second sliding block seats in a one-to-one correspondence manner; the pair of stepping motors are transversely fixed on the outer side surfaces of the two wallboards in a one-to-one correspondence manner and are positioned in front of the second sliding block seats; the front ends of the pair of adjusting screw rods are connected with the output shafts of the pair of stepping motors in a one-to-one correspondence mode.