CN212608414U - Deviation-preventing winding mechanism for roll copy paper - Google Patents

Abstract

The utility model relates to a reel duplicating paper production facility technical field specifically is a reel duplicating paper prevents partial winding mechanism, including the rewinding machine main part, the rewinding machine main part is including the backup pad, and the backup pad is provided with two sets ofly altogether, and is two sets of symmetrical form setting around the backup pad is, and is two sets of one side between the backup pad is rotated and is connected with the driving shaft, and one side fixedly connected with driving motor in front of driving shaft, and is two sets of one side back of keeping away from the driving shaft between the backup pad is run through and is inlayed and be connected the axle bed. The utility model discloses a set up the screw thread swivelling joint between thread bush and the first screw rod for when the first screw rod rotates, under the meshing effect of screw thread, two sets of thread bushes drive the limiting plate respectively and remove, and through the centre gripping restriction of limiting plate, be favorable to preventing that the copy paper log from taking place the skew at the rewinding in-process, be favorable to improving the device's application scope, be convenient for be applicable to the copy paper log of different specification width and carry out the rewinding operation.

Description

Deviation-preventing winding mechanism for roll copy paper

Technical Field

The utility model relates to a reel duplicating paper production facility technical field specifically is a reel duplicating paper prevents inclined to one side winding mechanism.

Background

The roll copying paper is a cylindrical small-cylinder-shaped thermal printing paper, is convenient to install and is usually applied to mobile printing equipment for menu receipts and payment information, most of the existing roll copying paper used as a raw material is large in the production process, and the original roll needs to be wound and wound again into a small roll with a proper specification in the production process;

in the rewinding process of the conventional reel copy paper original roll, due to the influence of rotation and equipment fall offset, the copy paper is easy to offset when being wound on a small roll in the rewinding process, so that the small rolls of the copy paper after rewinding and winding are uneven, and the quality of the reel copy paper is influenced;

in addition, in the rewinding process of the conventional roll copying paper, the upper surface of the copying paper is exposed to the outside air, and dust impurities in the air are easily attached to the upper part of the copying paper and are wound into the small roll together, so that the quality of the small roll copying paper falls.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a skew winding mechanism is prevented to reel duplicating paper, with the current reel duplicating paper that proposes in solving above-mentioned background, it is when carrying out rewinding production, receive equipment drop slope and pivoted influence, the skew takes place easily for the little roll duplicating paper that leads to the rewinding to come out, make little roll irregularity, influence the quality, and in the rewinding operation process, duplicating paper exposes in the outside air for a long time, can adhere to the top surface at duplicating paper when leading to external impurity too much, lead to the problem that the duplicating paper quality fell.

In order to achieve the above object, the utility model provides a following technical scheme: a deviation-preventing winding mechanism for roll copy paper comprises a rewinder body, wherein the rewinder body comprises two groups of supporting plates, the two groups of supporting plates are symmetrically arranged in the front and back direction, one side between the two groups of supporting plates is rotatably connected with a driving shaft, one side of the front surface of the driving shaft is fixedly connected with a driving motor, a connecting shaft seat is embedded in the back surface of one side, far away from the driving shaft, between the two groups of supporting plates and is rotatably connected with the supporting plates, a belt pulley transmission mechanism is fixedly connected between the connecting shaft seat and the driving shaft, a spline groove is formed in one end of the front surface of the connecting shaft seat, a spline shaft is inserted in the spline groove and is in sliding connection with the spline groove, a driven shaft is fixedly welded at one end of the front surface of the spline shaft, and a first U-shaped opening is formed in one side, the inside of establishing at first U-shaped opening is taken to the positive one end of driven shaft, the outside cover of driving shaft is equipped with the copy paper reel, and is two sets of install stop gear between the backup pad, and stop gear is including first screw rod, first screw rod rotates to be connected two sets of between the backup pad, the screw thread opposite direction of assembly on the both ends outer wall around the first screw rod, both ends outside symmetrical sleeve is equipped with the thread bush around the first screw rod, and is two sets of the screw thread looks adaptation of assembly on the thread bush inner wall respectively with first screw rod around the both ends outer wall, every group the outside of thread bush is all overlapped and is established and install the limiting plate, and every group the limiting plate is attached to and all has seted up second U-shaped opening in one side of driven shaft.

Preferably, the fixed cover in the positive one end outside of driven shaft is equipped with the ring, and the ring is installed at first U-shaped open-ended back, first U-shaped open-ended bottom is semi-circular, the outside diameter of ring is greater than the semi-circular diameter in first U-shaped open-ended bottom.

Preferably, a shaft rod penetrates through the two groups of limiting plates, the two groups of limiting plates are respectively connected with the shaft rod in a rotating and sliding manner, the front end and the rear end of the shaft rod are respectively inserted into the front supporting plate and the rear supporting plate, and the shaft rod is rotatably connected with the supporting plates.

Preferably, the tensioning mechanism is fixedly installed at the middle position of the two groups of support plates, the tensioning mechanism comprises two groups of slide rails, the two groups of slide rails are respectively and symmetrically fixed at the middle position of the two groups of support plates in a front-back manner, one side of the two groups of slide rails, which is close to each other, is connected with a slide block in a sliding manner, one side of the two groups of slide blocks, which is close to each other, is fixedly installed with a connecting rod, one side of the two groups of connecting rods, which is close to each other, is provided with a slide groove, a gasket is embedded in the slide groove, the bottom of each gasket is fixedly installed with a spring, the other end of the spring is fixedly embedded in the slide groove, a rotating shaft is inserted between the two groups of gaskets, a tensioning wheel is sleeved outside the rotating shaft, a connecting plate, and a second screw rod is vertically inserted into the slide rail of each group, one end of the lower part of each group of second screw rods penetrates through a threaded hole formed in the slide block and is rotatably connected to the bottom of the slide rail, and threads assembled on the outer side of each second screw rod are matched with the threaded holes in the slide block.

Preferably, the shape of the gasket is arc-shaped, the radian of the top of the gasket is matched with the radian of the outer side of the rotating shaft, and the rotating shaft is connected with the gasket in a rolling and rotating mode.

Preferably, the front end and the rear end of the tension wheel are spliced in a circular truncated cone shape, and the outer diameter of the middle position of the tension wheel is larger than that of the front end and the rear end of the tension wheel.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the first screw rod is sleeved with the limiting plates in a symmetrical mode through the threaded sleeves, the limiting plates are sleeved on the outer sides of each group of threaded sleeves, and the threaded rotary connection between the threaded sleeves and the first screw rod is set in a matched mode, so that when the first screw rod rotates, the two groups of threaded sleeves drive the limiting plates to move respectively under the meshing action of threads, the deviation of the copy paper logs in the rewinding process is prevented due to the clamping limitation of the limiting plates, meanwhile, the device can be adjusted in a moving mode through the limiting plates, the application range of the device is widened, and the device is suitable for rewinding the copy paper logs with different specifications and widths;

2. the slide block can slide up and down in the slide rail, and the second screw rod is in threaded rotary connection with the slide block, so that when the device is used, the position height of the tension wheel can be adjusted by rotating the second screw rod, the original roll of the copy paper can be tightened in the rewinding process under the elastic support of the spring, the stability of the rewinding process of the original roll of the copy paper can be conveniently ensured, and the slide block can move up and down, so that the device can be flexibly adjusted according to the requirements in use;

3. the bottom through setting up the connecting plate evenly is fixed with the brush for the device is when using, and when the copy paper reel passed between connecting plate and the take-up pulley, the brush hair through the connecting plate bottom can effectually get rid of the adnexed dust of copy paper reel top surface, simultaneously, through setting up the take-up pulley from the diameter shrink of centre to both sides around to, when making the copy paper reel through the take-up pulley, both sides downward sloping around it is convenient for guide the dust discharge.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic top view of the structure of the present invention;

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

FIG. 3 is a schematic sectional view of the front view of the structure of the present invention;

FIG. 4 is a schematic top view of the structure of the present invention after the original roll of copy paper is removed;

FIG. 5 is a schematic view of the spline groove and spline shaft structure connection in a three-dimensional manner;

fig. 6 is a schematic structural front sectional view of the tensioning mechanism of the present invention;

fig. 7 is a schematic top view of the tension wheel of the present invention.

In the figure: 100. a rewinder body; 110. a support plate; 120. a drive shaft; 130. a drive motor; 140. connecting the shaft seat; 150. a belt pulley transmission mechanism; 160. a spline groove; 170. a spline shaft; 180. a driven shaft; 190. a first U-shaped opening; 200. a circular ring; 300. copying a paper log; 400. a limiting mechanism; 410. a first screw; 420. a threaded sleeve; 430. a limiting plate; 440. a shaft lever; 450. a second U-shaped opening; 500. a tensioning mechanism; 510. a slide rail; 520. a slider; 530. a connecting rod; 540. a chute; 550. a gasket; 560. a spring; 570. a rotating shaft; 580. a tension wheel; 590. a connecting plate; 5010. a second screw.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides an embodiment: a deviation-preventing winding mechanism for roll copying paper comprises a rewinding machine main body 100, wherein the rewinding machine main body 100 comprises two groups of supporting plates 110, the supporting plates 110 are arranged in two groups, the two groups of supporting plates 110 are symmetrically arranged in the front and back direction, one side between the two groups of supporting plates 110 is rotatably connected with a driving shaft 120, one side of the front surface of the driving shaft 120 is fixedly connected with a driving motor 130, one side of the back surface, far away from the driving shaft 120, between the two groups of supporting plates 110 is penetrated and embedded with a connecting shaft seat 140, the connecting shaft seat 140 is rotatably connected with the supporting plates 110, a belt pulley transmission mechanism 150 is fixedly connected between the connecting shaft seat 140 and the driving shaft 120, a spline groove 160 is formed in one end of the front surface of the connecting shaft seat 140, a spline shaft 170 is inserted in the spline groove 160, the spline shaft 170 is slidably connected with the spline groove 160, a driven shaft 180 is fixedly welded to, one end of the front surface of the driven shaft 180 is overlapped inside the first U-shaped opening 190, the outer side of the driving shaft 120 is sleeved with a copy paper original roll 300, a limiting mechanism 400 is arranged between the two groups of supporting plates 110, the limiting mechanism 400 comprises a first screw 410, the first screw 410 is rotatably connected between the two groups of supporting plates 110, the directions of threads assembled on the outer walls of the front end and the rear end of the first screw 410 are opposite, the outer sides of the front end and the rear end of the first screw 410 are symmetrically sleeved with thread sleeves 420, threads assembled on the inner walls of the two groups of thread sleeves 420 are respectively matched with threads assembled on the outer walls of the front end and the rear end of the first screw 410, the outer side of each group of thread sleeves 420 is sleeved with a limiting plate 430, one side of each group of limiting plates 430 close to the driven shaft 180 is provided with a second U-shaped opening 450, during operation, a worker sleeves the copy paper original roll 300 on the driving shaft 120 on the copy paper original roll 300, then winds, the worker rotates the first screw 410, by arranging the thread rotary connection between the thread bushing 420 and the first screw 410, and the thread direction of the outer wall of the front and back ends of the first screw 410 is opposite, when the device is used, the first screw 410 is rotated to enable the front and back two groups of thread bushings 420 symmetrically arranged to simultaneously move oppositely on the first screw 410 relative to the middle position of the first screw 410, the front and back two groups of limit plates 430 simultaneously move oppositely, the position of the limit plates 430 is adjusted to enable the two groups of limit plates 430 to be clamped at the front and back sides of the copy paper, then, the driving motor 130 is powered on and started, the driven shaft 180 and the driving shaft 120 are simultaneously rotated through the transmission connection of the belt pulley transmission mechanism 150, the copy paper on the copy paper log 300 is gradually wound outside the driven shaft 180 under the rotation effect to form a small copy paper log, and is limited by the limit plates 430, the device is beneficial to preventing the offset of the copy paper original roll 300 during rewinding, effectively improving the working stability of the device and facilitating the guarantee of product quality, one end of the back surface of the driven shaft 180 is fixedly welded with the spline shaft 170, the driven shaft 180 is inserted into the spline groove 160 through the spline shaft 170 and is connected with the connecting shaft seat 140 in an inserting and clamping manner, meanwhile, the driven shaft 180 is arranged to penetrate through the second U-shaped opening 450 formed in the limiting plate 430, and the upper part of the second U-shaped opening 450 is in a penetrating manner, so that the driven shaft 180 can be taken down from the device through sliding, the small copy paper roll after rewinding is convenient to take down, and the device is convenient to take down after rewinding is finished;

furthermore, a circular ring 200 is fixedly sleeved on the outer side of one end of the front face of the driven shaft 180, the circular ring 200 is arranged on the back face of the first U-shaped opening 190, the bottom of the first U-shaped opening 190 is semicircular, the diameter of the outer side of the circular ring 200 is larger than the diameter of the semicircular bottom of the first U-shaped opening 190, when the device works, the circular ring 200 is fixed on the outer side of the front face of the driven shaft 180, and the circular ring 200 is attached to the back face of the first U-shaped opening 190, so that the driven shaft 180 is effectively prevented from falling off in use under the limiting action of the circular ring 200, and the stability of the device in use is ensured;

furthermore, a shaft rod 440 penetrates through the two groups of limiting plates 430, the two groups of limiting plates 430 are respectively connected with the shaft rod 440 in a rotating and sliding manner, the front end and the rear end of the shaft rod 440 are respectively inserted into the front supporting plate 110 and the rear supporting plate 110, and the shaft rod 440 is connected with the supporting plates 110 in a rotating manner;

further, a tensioning mechanism 500 is fixedly mounted at the middle position of the two sets of supporting plates 110, the tensioning mechanism 500 comprises two sets of sliding rails 510, the two sets of sliding rails 510 are respectively fixed at the middle position of the two sets of supporting plates 110 in a front-back symmetrical manner, the adjacent sides of the two sets of sliding rails 510 are respectively connected with a sliding block 520 in a sliding manner, the adjacent sides of the two sets of sliding blocks 520 are respectively fixedly mounted with a connecting rod 530, the adjacent sides of the two sets of connecting rods 530 are respectively provided with a sliding groove 540, a gasket 550 is embedded in each sliding groove 540, the bottom of each gasket 550 is respectively fixedly mounted with a spring 560, the other end of the spring 560 is fixedly embedded in the sliding groove 540, a rotating shaft 570 is inserted between the two sets of gaskets 550, a tensioning wheel 580 is sleeved outside the rotating shaft 570, a connecting plate 590 is fixedly mounted between the two sets of connecting rods, the second screw 5010 is vertically inserted into each set of slide rails 510, and one end of the lower portion of each set of second screw 5010 penetrates through a threaded hole formed in the slider 520 and is rotatably connected to the bottom of the slide rails 510, threads assembled on the outer side of the second screw 5010 are matched with the threaded holes in the slider 520, when the device works, one end of copy paper is pulled to penetrate between the connecting plate 590 and the tension wheel 580, the copy paper is fixedly adhered to the outer side of the driven shaft 180, the second screw 5010 is rotated inside the slide rails 510 by rotating the second screw 5010, the slider 520 moves upwards along the inside of the slide rails 510 under the meshing action of the threads, the rotating shaft 570 is driven to lift by one end of the slider 520, so that the tension wheel 580 moves upwards to tighten the pulled copy paper, the spring 560 is elastically supported at the lower position of the spacer 550, and the tension wheel 580 has a certain buffer space when tightening the copy paper, the device is beneficial to preventing the copying paper from being excessively strongly tightened and equivalently broken, meanwhile, the brushes are uniformly arranged at the bottom of the connecting plate 590, so that when the device works, when the copying paper continuously moves between the connecting plate 590 and the tensioning wheel 580, the brushes at the bottom of the connecting plate 590 relatively move to clean, dust and impurities adhered to the upper surface of the copying paper can be effectively removed, and the quality of a small roll of the rewound copying paper is favorably ensured;

further, the shape of the pad 550 is arc-shaped, the radian of the top of the pad 550 is matched with the radian of the outer side of the rotating shaft 570, the rotating shaft 570 is rotatably connected with the pad 550 in a rolling manner, and the rotating shaft 570 is rotatably connected with the pad 550, so that when the device is used, the copy paper continuously moves in the rewinding process, and the rotating shaft 570 is rotatably connected with the pad 550, so that the tension wheel 580 can rotate along with the movement of the copy paper, thereby being beneficial to avoiding the rotation difficulty of the tension wheel 580, causing the overlarge friction between the copy paper and the tension wheel 580, and effectively preventing the abrasion of the copy paper in the moving process;

furthermore, the front end and the rear end of the tension wheel 580 are formed by splicing circular truncated cones, the outer diameter of the middle position of the tension wheel 580 is larger than the outer diameters of the front end and the rear end of the tension wheel 580, and the diameters of the front end and the rear end of the tension wheel 580 are gradually contracted, so that when the device is used, when copy paper bypasses the tension wheel 580, the front end and the rear end of the copy paper are attached to the outer side of the tension wheel 580 and respectively incline towards the front side and the rear side under the tightening supporting effect of the tension wheel 580, and therefore, when a brush at the bottom of the connecting plate 590 cleans the copy paper, dust can be shaken off along an inclined plane, and the dust is effectively prevented from being accumulated;

the working principle is as follows: when the device works, a worker sleeves the copy paper reel 300 on the outer side of the driving shaft 120, and then pulls one end of the copy paper on the copy paper reel 300, so that the copy paper passes through the space between the tension wheel 580 and the connecting plate 590, and the copy paper bypasses the position above the shaft lever 440, and the copy paper is fixedly wound on the outer side of the driven shaft 180;

then, the worker rotates the first screw 410, under the meshing action of the threads, the first screw 410 drives the thread sleeves 420 on the outer side of the first screw to move relatively, and due to the fact that the thread directions of the outer walls of the front side and the rear side of the first screw 410 are opposite, when the first screw 410 rotates, the thread sleeves 420 sleeved on the outer walls of the front end and the rear end of the first screw 410 move relatively at the same time, and therefore the front limiting plate 430 and the rear limiting plate 430 are driven to move simultaneously and are clamped on the front side and the rear side of the copy paper;

according to the actual situation after the copy paper roll 300 is installed, the worker rotates the second screw 5010, under the meshing action of the threads, the slider 520 moves upwards along the inside of the slide rail 510, so as to drive the connecting rod 530 to move upwards, the tension wheel 580 moves upwards through the upward movement of the connecting rod 530, the position where the copy paper roll 300 is stretched out is tightened, and meanwhile, the tension wheel 580 has a certain buffer range for tightening the copy paper roll 300 through the elastic support of the spring 560;

the during operation, driving motor 130 circular telegram starts to drive driving shaft 120 and rotates, transmission through belt pulley drive mechanism 150, make driven shaft 180 rotate with driving shaft 120 simultaneously, drive the copy paper reel 300 and rotate the rewinding, make copy paper reel 300 reform the little book on driven shaft 180, after copy paper on copy paper reel 300 moves connecting plate 590 bottom, under the scraping of connecting plate 590 bottom brush, the adnexed dust impurity in copy paper top is swept away, after the rewinding, the staff upwards lifts and draws driven shaft 180, the little book of copy paper after the rewinding end takes off from driven shaft 180, above do the utility model discloses a whole theory of operation.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a reel duplicating paper prevents inclined to one side winding mechanism, includes rewinding machine main part (100), its characterized in that: the rewinding machine comprises a rewinding machine main body (100) and is characterized in that two groups of supporting plates (110) are arranged, the two groups of supporting plates (110) are symmetrically arranged in the front and back direction, one side between the two groups of supporting plates (110) is rotatably connected with a driving shaft (120), one side of the front surface of the driving shaft (120) is fixedly connected with a driving motor (130), a connecting shaft seat (140) penetrates through and is embedded in the back surface of one side, far away from the driving shaft (120), between the two groups of supporting plates (110), the connecting shaft seat (140) is rotatably connected with the supporting plates (110), a belt pulley transmission mechanism (150) is fixedly connected between the connecting shaft seat (140) and the driving shaft (120), a spline groove (160) is formed in one end of the front surface of the connecting shaft seat (140), a spline shaft (170) is inserted in the spline groove (160), and the spline shaft (170), the front end of the spline shaft (170) is fixedly welded with a driven shaft (180), a group of supporting plates (110) is arranged on the front side, away from the driving shaft (120), of one side of the supporting plates (110) and provided with a first U-shaped opening (190), the front end of the driven shaft (180) is arranged inside the first U-shaped opening (190), a copy paper raw roll (300) is sleeved on the outer side of the driving shaft (120), a limiting mechanism (400) is arranged between the two groups of supporting plates (110), the limiting mechanism (400) comprises a first screw (410), the first screw (410) is rotatably connected between the two groups of supporting plates (110), the directions of threads assembled on the outer walls of the front end and the rear end of the first screw (410) are opposite, threaded sleeves (420) are symmetrically arranged on the outer sides of the front end and the rear end of the first screw (410), and threads assembled on the inner wall of the two groups of the threaded sleeves (420) are respectively matched with threads assembled on the outer walls, every group all the cover is established in the outside of thread bush (420) and is installed limiting plate (430), and every group limiting plate (430) are close to one side of driven shaft (180) and have all been seted up second U-shaped opening (450).

2. The offset-proof winding mechanism for the roll copying paper as claimed in claim 1, wherein: the fixed cover in the positive one end outside of driven shaft (180) is equipped with ring (200), and installs at the back of first U-shaped opening (190) ring (200), the bottom of first U-shaped opening (190) is semi-circular, the outside diameter of ring (200) is greater than the semi-circular diameter in first U-shaped opening (190) bottom.

3. The offset-proof winding mechanism for the roll copying paper as claimed in claim 1, wherein: the shaft rod (440) penetrates through and is connected between the two groups of limiting plates (430), the two groups of limiting plates (430) are respectively in rotating sliding connection with the shaft rod (440), the front end and the rear end of the shaft rod (440) are respectively inserted into the front supporting plate (110) and the rear supporting plate (110), and the shaft rod (440) is rotatably connected with the supporting plates (110).

4. The offset-proof winding mechanism for the roll copying paper as claimed in claim 1, wherein: the middle position of the two groups of supporting plates (110) is fixedly provided with a tensioning mechanism (500), the tensioning mechanism (500) comprises a sliding rail (510), the sliding rail (510) is provided with two groups, the sliding rail (510) is symmetrically fixed at the middle positions of the two groups of supporting plates (110) in a front-back manner respectively, one side of each sliding rail (510) which is close to each other is connected with a sliding block (520) in a sliding manner, one side of each sliding block (520) which is close to each other is fixedly provided with a connecting rod (530), one side of each connecting rod (530) which is close to each other is provided with a sliding groove (540), the inside of each sliding groove (540) is inlaid with a gasket (550), the bottom of each gasket (550) is fixedly provided with a spring (560), the other end of the spring (560) is fixedly inlaid in the inside of each sliding groove (540), and a rotating shaft (570), and the outer side of the rotating shaft (570) is sleeved with a tensioning wheel (580), a connecting plate (590) is fixedly installed between the two groups of connecting rods (530), brushes are uniformly fixed at the lower position of the connecting plate (590), a second screw (5010) is vertically inserted into the sliding rail (510) of each group, one end of the lower portion of the second screw (5010) of each group penetrates through a threaded hole formed in the sliding block (520), the sliding rail is rotatably connected to the bottom of the sliding rail (510), and threads assembled on the outer side of the second screw (5010) are matched with the threaded hole formed in the sliding block (520).

5. The offset-proof winding mechanism for the roll copying paper as claimed in claim 4, wherein: the gasket (550) is arc-shaped, the radian of the top of the gasket (550) is matched with the radian of the outer side of the rotating shaft (570), and the rotating shaft (570) is rotatably connected with the gasket (550) in a rolling manner.

6. The offset-proof winding mechanism for the roll copying paper as claimed in claim 4, wherein: the front end and the rear end of the tension wheel (580) are spliced in a circular truncated cone shape, and the outer diameter of the middle position of the tension wheel (580) is larger than that of the front end and the rear end of the tension wheel.

Images