CN213082656U

CN213082656U - Perfecting press for roll paper

Info

Publication number: CN213082656U
Application number: CN202021323030.3U
Authority: CN
Inventors: 于晓明
Original assignee: Shanghai Shengtong Times Printing Co ltd
Current assignee: Shanghai Shengtong Times Printing Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-04-30
Anticipated expiration: 2030-07-07

Abstract

The application relates to a double-sided printing machine for roll paper, which solves the problems of complex operation and lower working efficiency caused by the fact that the printing machine for roll paper can not print on two sides simultaneously, and comprises a base, wherein a front printing device and a back printing device are arranged on the base; a front printing paper inlet, a front printing paper outlet and a front printing piece are arranged on one side of the front printing device, which is far away from the reverse printing device, a front printing channel is arranged between the front printing paper inlet and the front printing paper outlet, and a discharging roller is arranged at the front printing paper inlet; a reverse side printing paper inlet, a reverse side printing paper outlet and a reverse side printing piece are arranged on one side of the reverse side printing device, which is far away from the reverse side printing device, and a reverse side printing channel is arranged between the reverse side printing paper inlet and the reverse side printing paper outlet; a conveying mechanism is arranged between the front printing device and the back printing device. The double-sided printing machine for the roll paper simultaneously performs double-sided printing, is simple to operate, and is favorable for improving the working efficiency.

Description

Perfecting press for roll paper

Technical Field

The application relates to the technical field of printing equipment, in particular to a perfecting press for roll paper.

Background

Current printers are machines that print text and images. Modern printing machines are generally composed of mechanisms for plate loading, inking, stamping, paper feeding, etc. The principle of the printing machine is that the characters or images to be printed are made into printing plate, then it is mounted on the printing machine, then the ink is coated on the position of the printing plate with characters and images by hand or printing machine, then it is directly or indirectly transferred onto paper or other printing material.

The chinese utility model patent that has a publication number of CN210084557U discloses a high efficiency web press, which relates to the printing device technology field. This high efficiency web press, including the operation panel, the top of operation panel can be dismantled and is connected with the printing organism, and the bottom welding of operation panel has the pillar. This high efficiency web fed press, during the use, can rotate the screw thread hand wheel with the hand, make two locating levers to keeping away from, behind two locating lever immigration two fixed plates, can follow the change to the reel of form advancing, reverse rotation screw thread hand wheel again, the locating lever can shift out two fixed plates again, the realization is fixed to the support of the reel of form advancing, upwards mention the cylinder that is located the upper strata, can make the second horizontal pole drive the slider and slide on the slide bar, extrude first spring, be in between two cylinders with the paper, loosen the cylinder of mentioning, can make two cylinders carry on spacingly to the paper, at the in-process that the paper removed, can carry out flattening and antivibration to the paper.

In view of the above-mentioned related technologies, the inventor believes that there is a defect that when printing is required to be performed on both sides of a web, the printing press can only perform single-side printing on the web, and then the web subjected to single-side printing is wound up, and then the printing press performs printing on the other side of the web subjected to single-side printing, and then double-side printing is completed, and double-side printing cannot be performed simultaneously, and the operation is cumbersome, which affects the work efficiency.

SUMMERY OF THE UTILITY MODEL

To improve the drawbacks of the related art, the present application provides a perfecting printing press for a web. In order to solve the technical problem, the double-sided printing machine has the advantages of simultaneous double-sided printing, simple operation and improvement on working efficiency.

The application provides a two-sided printing machine for roll paper adopts following technical scheme:

a double-sided printing machine for roll paper comprises a base, wherein a first support and a second support are arranged on the base, a front printing device is arranged at one end, away from the base, of the first support, and a back printing device is arranged at one end, away from the base, of the second support; a front printing paper inlet, a front printing paper outlet and a front printing piece for printing the front of roll paper are arranged on one side, far away from the reverse printing device, of the front printing device, the front printing paper outlet is positioned on one side, far away from the base, of the front printing paper inlet, the front printing piece is positioned on one side, far away from the base, of the front printing paper outlet, a front printing channel is formed between the front printing paper inlet and the front printing paper outlet, and the front printing paper inlet is detachably and rotatably provided with a discharging roller; the reverse side printing device is characterized in that one side of the reverse side printing device, which is far away from the reverse side printing device, is provided with a reverse side printing paper inlet, a reverse side printing paper outlet and a reverse side printing piece for printing the reverse side of the roll paper, the reverse side printing paper outlet is positioned on one side of the reverse side printing paper inlet, which is far away from the base, the reverse side printing piece is positioned on one side of the reverse side printing paper outlet, which is far away from the base, and a reverse side printing channel is formed between the reverse side printing; and a conveying mechanism is arranged between the front printing device and the back printing device.

Through adopting above-mentioned technical scheme, when perfecting press is using for the roll web, the roll web is loaded on the blowing roller, and then install in front printing paper feed opening department, the roll web carries out the blowing through the blowing roller, the roll web gets into through front printing paper feed opening of front printing device, then the roll web gets into front printing passageway, through front printing piece printing front, and then discharge from front printing exit slot, the roll web that will print out passes through conveying mechanism and sends into reverse side printing paper feed opening of reverse side printing device, the roll web gets into reverse side printing passageway, then the roll web passes through reverse side printing piece printing reverse side, and then discharge through reverse side printing exit slot. So set up, the two-sided printing goes on simultaneously, and easy operation is favorable to improving work efficiency.

Further configured, the discharging roller is detachably and fixedly provided with positioning plates along the two axial ends.

Through adopting above-mentioned technical scheme, when perfecting press for the roll web is using, take off the blowing roller, pull down one of them locating plate from the one end of blowing roller, and then install the roll web on the blowing roller, install the locating plate once more, adjust the position of two locating plates, then two fixed locating plates, and then install the blowing roller at front printing paper feed opening department, be favorable to spacing the roll web, guarantee the stability of roll web at front printing device.

Further configured, a paper feeding roller is rotatably arranged on the reverse side printing device, the paper feeding roller is arranged at the position of the reverse side printing paper inlet, and the paper feeding roller is provided with limiting baffles along the two axial ends.

Through adopting above-mentioned technical scheme, transport reverse side printing paper feed mouth department when the roll web, lead to it through the paper feed roller, and then limit baffle carries on spacingly to the paper, is favorable to preventing that the roll web from producing the skew when getting into reverse side printing paper feed mouth, is favorable to guaranteeing roll web at reverse side printing device's stability.

Further, the opposite side walls of the limit baffles, which are close to each other, are provided with elastic layers.

Through adopting above-mentioned technical scheme, produce the skew when the roll web transports into paper feed roller department, the roll web contacts with the elastic layer, is favorable to preventing that the roll web from producing the fold, guarantees the roll web good when getting into reverse side printing device.

The paper feeding device is further configured, the limiting baffle is arranged on the paper feeding roller in a sliding mode along the axial direction of the paper feeding roller, and a fixing assembly used for connecting and fixing the limiting baffle and the paper feeding roller is arranged between the limiting baffle and the paper feeding roller.

Through adopting above-mentioned technical scheme, limit baffle is along the axial slip of advancing the paper roll on advancing the paper roll, and limit baffle passes through fixed subassembly to be fixed on advancing the paper roll, is favorable to carrying on spacingly to the roll web of different specifications size, is favorable to improving the adaptability of printing machine for the roll web.

The limiting baffle comprises a sliding part and a limiting part, the sliding part is arranged on the paper feeding roller in a sliding mode along the axial direction of the paper feeding roller, and the limiting part is located at one end, far away from the paper feeding roller, of the sliding part; the fixed subassembly includes mounting, hole and the fixed slot that slides, and the hole setting that slides is on the lateral wall that paper feed roller was kept away from to the portion of sliding, and the fixed slot setting is on paper feed roller is close to the lateral wall of the portion of sliding, and the mounting is worn to establish the hole of sliding and is arranged in the fixed slot, mounting and the relative sliding connection in hole that slides.

Through adopting above-mentioned technical scheme, when the paper of different specifications is used to the printing machine for the roll paper, the portion of sliding through limit baffle removes, and the hole of sliding and mounting in the portion of sliding produce relative slip simultaneously, and then the mounting wears to establish the hole of sliding and locks in the fixed slot, is favorable to removing and fixing limit baffle, is favorable to spacing the roll paper of different specifications size, is favorable to improving the adaptability of printing machine for the roll paper.

The paper collecting device is characterized in that one end, close to the base, of the first support is rotatably provided with a first connecting rod, a first limiting component for fixing the first connecting rod is arranged on the base, a first fixing rod is fixedly arranged at the end, far away from the first support, of the first connecting rod, and a cloth bag for collecting paper is arranged between the first fixing rod and the first connecting rod.

Through adopting above-mentioned technical scheme, after the roll web is accomplished from the printing of positive printing device, when reverse side printing device did not begin to print, can constantly pile up a large amount of papers, through connecting rod one on the rotation support, then through a spacing subassembly fixed link pole one, make the cloth pocket between dead lever one and the connecting rod open, be favorable to collecting the roll web that positive printing was accomplished, be favorable to preventing that the roll web that positive printing was accomplished is infected with impurity because of dropping on the base, be favorable to protecting the roll web that positive printing was accomplished.

And a second connecting rod is rotatably arranged at one end, close to the base, of the second support, a second limiting component for fixing the second connecting rod is arranged on the base, and a second fixing rod is arranged at the end, far away from the second support, of the second connecting rod.

Through adopting above-mentioned technical scheme, when the roll web that the front printing was accomplished transported reverse side printing device through conveying mechanism, through the connecting rod two on the swivel mount two, and then fix connecting rod two through spacing subassembly two, the roll web that the front printing was accomplished is transported dead lever two, and then transports into on the paper roll, is favorable to carrying out tensioning and direction to the roll web after the front printing was accomplished, the printing of the reverse side printing device of being convenient for.

Further configured, a roller is rotatably arranged on the second fixing rod.

Through adopting above-mentioned technical scheme, when the web after the front printing is accomplished transports on the dead lever two, the cylinder is favorable to reducing the frictional force of dead lever two and web, makes things convenient for the transportation of the web of the front printing completion.

The conveying mechanism comprises a first conveying assembly and a second conveying assembly, wherein the first conveying assembly is positioned on the first support, and the second conveying assembly is positioned on the second support; the conveying assembly I comprises a first limiting rod and a first limiting column matched with the first limiting rod, the first limiting rod and the first limiting column are arranged on a first support, the first limiting column is positioned on one side, away from the base, of the first limiting rod, a gap is formed between the first limiting column and the first limiting rod, and the first support is provided with a first limiting groove used for clamping the first limiting column; the second conveying assembly comprises a second limiting rod and a second limiting column matched with the second limiting rod for use, the second limiting rod and the second limiting column are arranged on the second support, the second limiting column is located on one side, away from the base, of the second limiting rod, a gap exists between the second limiting column and the second limiting column, and the second support is provided with a second limiting groove used for clamping the second limiting column.

Through adopting above-mentioned technical scheme, when the web after the front printing is accomplished transports conveying mechanism, spacing post one of spacing groove joint, spacing post two of spacing groove joint, the web after the front printing is accomplished is earlier through the gap between spacing post one and the spacing groove one, then through the gap between spacing post two and the spacing groove two, be favorable to leading and spacing the web after the front printing is accomplished, be convenient for the transportation of the web after the front printing is accomplished.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the double-sided printing machine for the roll paper is used, the roll paper is loaded on the discharging roller and is further installed at the front printing paper inlet, the roll paper is discharged through the discharging roller, the roll paper enters through the front printing paper inlet of the front printing device, then the roll paper enters into the front printing channel, the front side is printed through the front printing piece, then the roll paper is discharged from the front printing paper outlet, the roll paper which is printed out is sent into the reverse side printing paper inlet of the reverse side printing device through the conveying mechanism, the roll paper enters into the reverse side printing channel, then the roll paper is printed on the reverse side through the reverse side printing piece, and then the roll paper is discharged through the reverse side printing. Due to the arrangement, double-sided printing is carried out simultaneously, the operation is simple, and the working efficiency is improved;

2. when the roll paper printing machine is used for printing paper of different specifications, the sliding part of the limiting baffle moves, the sliding hole in the sliding part and the fixing part slide relatively, and the fixing part penetrates through the sliding hole and is locked in the fixing groove, so that the limiting baffle is favorably moved and fixed, roll paper of different specifications is favorably limited, and the adaptability of the roll paper printing machine is favorably improved;

3. when the roll paper after the front printing is finished is transported to the conveying mechanism, the first limiting groove is connected with the first limiting column in a clamping mode, the second limiting groove is connected with the second limiting column in a clamping mode, the roll paper after the front printing is finished firstly passes through a gap between the first limiting column and the first limiting groove, then the gap between the second limiting column and the second limiting groove is used for facilitating guiding and limiting the roll paper after the front printing is finished, and transportation of the roll paper after the front printing is finished is facilitated.

Drawings

FIG. 1 is a schematic overall structure of the present application;

FIG. 2 is a schematic partial cross-sectional view of the present application highlighting a front side print pass;

FIG. 3 is a schematic view of a first embodiment of the present disclosure highlighting a first position limiting assembly;

FIG. 4 is a schematic view of a second embodiment of the present disclosure highlighting a second position-limiting assembly;

FIG. 5 is a schematic view of the drum of the present application shown highlighted;

FIG. 6 is a schematic partial cross-sectional view of a reverse side printing apparatus of the present application shown highlighted;

FIG. 7 is a schematic view of the present application highlighting the feed roller configuration.

Description of reference numerals: 1. a base; 2. a first bracket; 21. a first support part; 22. a first connecting part; 3. a second bracket; 31. a second support part; 32. a second connecting part; 4. a front side printing device; 5. a reverse side printing device; 6. printing a paper inlet on the front side; 7. printing a paper outlet on the front side; 8. a front side printing member; 9. printing a channel on the front surface; 10. a placement groove; 11. a discharge roller; 12. positioning a plate; 13. a first connecting rod; 14. a first limiting component; 141. a first fixing plate; 142. rotating the first plate; 15. a first torsion spring; 16. fixing a rod I; 17. a cloth bag; 18. a conveying mechanism; 181. a first conveying assembly; 1811. a first limiting rod; 1812. a first limiting column; 182. a second conveying assembly; 1821. a second limiting rod; 1822. a second limiting column; 19. a second connecting rod; 20. a second limiting component; 201. a second limiting plate; 202. a second rotating plate; 23. a second torsion spring; 24. a second fixing rod; 25. a drum; 26. printing a paper inlet on the reverse side; 27. printing a paper outlet on the reverse side; 28. a reverse side printing member; 29. printing a channel on the reverse side; 30. a paper feeding roller; 33. a limit baffle; 331. a sliding part; 332. a limiting part; 34. A fixing assembly; 341. a fixing member; 342. a sliding hole; 343. fixing grooves; 35. an elastic layer; 36. a first limiting groove; 37. and a second limiting groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a perfecting press for a web. Referring to fig. 1 and 2, a perfecting press for web includes a rectangular base 1, and a first frame 2 and a second frame 3 are provided on the base 1. The first support 2 comprises an I-shaped first support part 21 and two rectangular first connecting parts 22, the first support part 21 is arranged on the base 1, and the first connecting parts 22 are positioned on one side wall of the first support part 21, which is far away from the base 1; the second support 3 comprises a second i-shaped support portion 31 and two second rectangular connecting portions 32, the second support portion 31 is disposed on the base 1, and the second connecting portions 32 are located on a side wall of the second support portion 31 away from the base 1. One end of the first bracket 2, which is far away from the base 1, is provided with a cuboid-shaped front printing device 4, and one end of the second bracket 3, which is far away from the base 1, is provided with a cuboid-shaped back printing device 5.

A rectangular front-side printing paper inlet 6, a rectangular front-side printing paper outlet 7 and a front-side printing member 8 for printing the front side of the web are provided on a side wall of the front-side printing unit 4 remote from the back-side printing unit 5. The front printing paper outlet 7 is located at one end, far away from the base 1, of the front printing paper inlet 6, the front printing part 8 is in a cuboid shape, the front printing part 8 is arranged at one end, far away from the base 1, of the front printing paper outlet 7 in a sliding mode through matching of a sliding rail and a sliding groove, and a U-shaped front printing channel 9 is formed between the front printing paper inlet 6 and the front printing paper outlet 7.

The front printing device 4 is provided with a semicircular placement groove 10 and a cylindrical discharge roller 11 near the front printing paper outlet 7, and both ends of the discharge roller 11 in the length direction thereof are disposed in the placement groove 10. The material discharging roller 11 is provided with positioning plates 12 along two axial ends thereof, and the positioning plates 12 and the material discharging roller 11 are fixed by bolts. When the perfecting press for roll paper is in use, one of the positioning plates 12 is detached from one end of the discharging roller 11, the roll paper is installed on the discharging roller 11, the positioning plate 12 is installed again, the positions of the two positioning plates 12 are adjusted, then the two positioning plates 12 are fixed, the roll paper is favorably limited, and the stability of the roll paper on the front printing device 4 is ensured.

Referring to fig. 1 and 3, a first cylindrical connecting rod 13 is rotatably arranged at one end of the first bracket 2 close to the base 1, and a first limiting component 14 for fixing the first connecting rod 13 is arranged on the first bracket 2. The first limiting component 14 comprises a first fixing plate 141 in a rectangular parallelepiped shape and a first rotating plate 142 in a rectangular parallelepiped shape, the first fixing plate 141 and the first rotating plate 142 are rotatably connected through a cylindrical pin, the first fixing plate 141 is fixedly arranged on the first bracket 2, the first rotating plate 142 is arranged at one end of the first fixing plate 141, which is far away from the base 1, and a first torsion spring 15 is arranged at a rotating position between the first rotating plate 142 and the first fixing plate 141. One end, close to the first bracket 2, of the first connecting rod 13 is abutted against the first rotating plate 142, a first fixing rod 16 is fixedly arranged at the end, far away from the first bracket 2, of the first connecting rod 13, and a cloth bag 17 for collecting paper is arranged between the first fixing rod 16 and the first connecting rod 13. After the roll paper is printed from the front printing device 4, when the reverse printing device 5 does not start printing, a large amount of paper can be continuously accumulated, through the first connecting rod 13 on the first rotating support 2, and then one end of the first connecting rod 13, which is close to the first support 2, pushes the first rotating plate 142 to rotate, the first torsion spring 15 generates compression, when the first connecting rod 13 is separated from the first rotating plate 142, the first torsion spring 15 restores due to the elastic restoring force of the first torsion spring, and then one end of the first connecting rod 13, which is close to the first support 2, abuts against one side wall, which is close to the base 1, of the first rotating plate 142, and then the first connecting rod 13 is fixed, so that the cloth pocket 17 between the first fixing rod 16 and the first connecting rod 13 is opened, the roll paper printed on the front side can be collected, the roll paper printed on the front side can be.

And a conveying mechanism 18 is arranged between the front side printing device 4 and the back side printing device 5, the conveying mechanism 18 comprises a first conveying component 181 and a second conveying component 182, the first conveying component 181 is positioned on the first support 2, and the second conveying component 182 is positioned on the second support 3. The first conveying assembly 181 comprises a first cylindrical limiting rod 1811 and a first limiting column 1812 matched with the first limiting rod 1811, the first limiting column 1812 is cylindrical, the first limiting rod 1811 and the first limiting column 1812 are arranged on the first bracket 2, the first limiting column 1812 is located on one side, away from the base 1, of the first limiting rod 1811, a gap exists between the first limiting column 1812 and the first limiting rod 1811, the first bracket 2 is provided with a first limiting groove 36 used for clamping the first limiting column 1812, and the first limiting groove 36 is semicircular. The second conveying assembly 182 comprises a second cylindrical limiting rod 1821 and a second limiting column 1822 matched with the second limiting rod 1821, the second limiting column 1822 is cylindrical, the second limiting rod 1821 and the second limiting column 1822 are both arranged on the second support frame 3, the second limiting column 1822 is located on one side, away from the base 1, of the second limiting rod 1821, a gap exists between the second limiting column 1822 and the second limiting rod 1821, the second support frame 3 is provided with a second limiting groove 37 used for clamping the second limiting column 1822, and the second limiting groove 37 is semicircular. When the roll paper after the front printing is conveyed to the conveying mechanism 18, the first limiting groove 36 is clamped with the first limiting column 1812, the second limiting groove 37 is clamped with the second limiting column 1822, the roll paper after the front printing firstly passes through a gap between the first limiting column 1812 and the first limiting groove 36 and then passes through a gap between the second limiting column 1822 and the second limiting groove 37, and therefore the roll paper after the front printing is guided and limited is facilitated, and the roll paper after the front printing is conveyed conveniently.

One end of the second support 3, which is close to the base 1, is rotatably provided with a second cylindrical connecting rod 19, and the second support 3 is provided with a second limiting component 20 for fixing the second connecting rod 19. The second limiting assembly 20 comprises a second fixing plate in a cuboid shape, a second rotating plate 202 in a cuboid shape, the second fixing plate and the second rotating plate 202 are connected in a rotating mode through cylindrical pins, the second fixing plate is fixedly arranged on the second support 3, the second rotating plate 202 is arranged at one end, far away from the base 1, of the second fixing plate, a second torsion spring 23 is arranged at the rotating position between the second rotating plate 202 and the second fixing plate, one end, close to the second support 3, of the second connecting rod 19 is abutted to the second rotating plate 202, and the second connecting rod 19, far away from the second support 3, is fixedly provided with a second fixing rod 24. When the roll paper with the front printing completed is conveyed to the reverse printing device 5 through the conveying mechanism 18, the second connecting rod 19 on the second rotating support 3 is used, one end, close to the second support 3, of the second connecting rod 19 pushes the second rotating plate 202 to rotate, the second torsion spring 23 compresses, when the second connecting rod 19 is separated from the second rotating plate 202, the second torsion spring 23 restores due to the elastic restoring force of the second torsion spring, one end, close to the second support 3, of the second connecting rod 19 abuts against one side wall, close to the base 1, of the second rotating plate 202, the second connecting rod 19 is fixed, the roll paper with the front printing completed is conveyed to the second fixing rod 24 and then conveyed to the reverse printing device 5, tensioning and guiding of the roll paper with the front printing completed are facilitated, and printing of the reverse printing device 5 is facilitated.

Referring to fig. 1 and 5, a cylindrical roller 25 is rotatably provided on the second fixing lever 24. When the roll paper after the front printing is transported to the second fixing rod 24, the roller 25 is beneficial to reducing the friction force between the second fixing rod 24 and the roll paper, and facilitates the transportation of the roll paper after the front printing is completed.

Referring to fig. 1 and 6, a rectangular reverse-side printing paper feed port 26, a rectangular reverse-side printing paper discharge port 27, and a reverse-side printing member 28 for printing the reverse side of the web are provided on a side wall of the reverse-side printing unit 5 remote from the front-side printing unit 4. The reverse side printing paper outlet 27 is positioned at one end of the reverse side printing paper inlet 26 far away from the base 1, the reverse side printing piece 28 is in a cuboid shape, the reverse side printing piece 28 is arranged at the reverse side printing paper outlet 27 in a sliding mode through the matching of a sliding rail and a sliding groove, and a U-shaped reverse side printing channel 29 is formed between the reverse side printing paper inlet 26 and the reverse side printing paper outlet 27.

Referring to fig. 6 and 7, a cylindrical paper feed roller 30 is rotatably provided in the reverse side printing apparatus 5, the paper feed roller 30 is provided at the reverse side printing paper feed port 26, an annular stopper 33 is provided in the paper feed roller 30 so as to slide in the axial direction thereof, the stopper 33 includes an annular sliding portion 331 and an annular stopper 332, the sliding portion 331 is provided in the paper feed roller 30 so as to slide in the axial direction of the paper feed roller 30, and the stopper 332 is located at an end of the sliding portion 331 away from the paper feed roller 30. A fixing component 34 for connecting and fixing the limiting baffle 33 and the paper feeding roller 30 is arranged between the limiting baffle 33 and the paper feeding roller 30, the fixing component 34 comprises a fixing member 341, a sliding hole 342 with a rectangular sliding section and a fixing groove 343 with a circular inserting section, the sliding hole 342 is arranged on the side wall of the sliding part 331 far away from the paper feeding roller 30, the fixing groove 343 is arranged on the side wall of the paper feeding roller 30 close to the sliding part 331, the fixing member 341 penetrates through the sliding hole 342 and is positioned in the fixing groove 343, the fixing member 341 and the sliding hole 342 are in relative sliding connection, the fixing member 341 is preferably a bolt in the embodiment, and the fixing mode of the fixing member 341 and. When the printing machine for roll paper is applied to paper of different specifications, the sliding part 331 of the limiting baffle 33 moves, meanwhile, the sliding hole 342 in the sliding part 331 and the fixing part 341 slide relatively, and then the fixing part 341 penetrates through the sliding hole 342 and is locked in the fixing groove 343, so that the limiting baffle 33 is favorably moved and fixed, the roll paper of different specifications and sizes is favorably limited, and the adaptability of the printing machine for roll paper is favorably improved.

The opposite side walls of the limit stop 33, which are close to each other, are provided with annular elastic layers 35, and the elastic layers 35 in this embodiment are preferably made of silicon rubber. The web is deflected as it is transported to the feed roller 30 and contacts the elastic layer 35 to help prevent the web from wrinkling and ensure that the web is well-conditioned when it enters the reverse printing unit 5.

Implementation principle of the above embodiment: when the web perfecting press is used, the first connecting rod 13 on the first support 2 is rotated, one end, close to the first support 2, of the first connecting rod 13 pushes the first rotating plate 142 to rotate, the first torsion spring 15 is compressed, when the first connecting rod 13 is separated from the first rotating plate 142, the first torsion spring 15 restores due to elastic restoring force of the first torsion spring, one end, close to the first support 2, of the first connecting rod 13 abuts against one side wall, close to the base 1, of the first rotating plate 142, the first connecting rod 13 is fixed, and therefore the cloth pocket 17 between the first fixing rod 16 and the first connecting rod 13 is opened. Through the second connecting rod 19 on the second rotating support 3, one end of the second connecting rod 19, which is close to the second support 3, pushes the second rotating plate 202 to rotate, and the second torsion spring 23 compresses, when the second connecting rod 19 is separated from the second rotating plate 202, the second torsion spring 23 returns due to the elastic restoring force of the second torsion spring, so that one end of the second connecting rod 19, which is close to the second support 3, abuts against one side wall of the second rotating plate 202, which is close to the base 1, and the second connecting rod 19 is fixed. The sliding part 331 of the limit baffle 33 moves, and meanwhile, the sliding hole 342 in the sliding part 331 and the fixing member 341 slide relatively, so that the fixing member 341 penetrates through the sliding hole 342 and is locked in the fixing groove 343. The first limit groove 36 is clamped with the first limit column 1812, and the second limit groove 37 is clamped with the second limit column 1822.

The discharging roller 11 loads the roll paper and is further arranged at the front printing paper feeding port 6, the roll paper is discharged through the discharging roller 11, the roll paper enters through the front printing paper feeding port 6 of the front printing device 4, the web then enters the front side printing path 9, prints the front side through the front side printing member 8, and is discharged from the front side printing sheet discharge port 7, the front side-printed web is collected through the cloth pocket 17, and the web with the front printing completed passes through the gap between the first limiting column 1812 and the first limiting groove 36, then the paper is conveyed to the second fixing rod 24 through the gap between the second limiting column 1822 and the second limiting groove 37 and is conveyed to the paper feeding roller 30, and then into the reverse-side printing paper feed port 26, the web enters the reverse-side printing passage 29, and the web is then printed on the reverse side by the reverse-side printing member 28 and discharged through the reverse-side printing paper discharge port 27. So set up, the two-sided printing goes on simultaneously, and easy operation is favorable to improving work efficiency.

The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A perfecting press for webs, comprising a base (1), characterized in that: a first support (2) and a second support (3) are arranged on the base (1), a front printing device (4) is arranged at one end, away from the base (1), of the first support (2), and a back printing device (5) is arranged at one end, away from the base (1), of the second support (3); a front printing paper inlet (6), a front printing paper outlet (7) and a front printing piece (8) for printing the front of the web are arranged on one side, far away from the reverse printing device (5), of the front printing device (4), the front printing paper outlet (7) is positioned on one side, far away from the base (1), of the front printing paper inlet (6), the front printing piece (8) is positioned on one side, far away from the base (1), of the front printing paper outlet (7), a front printing channel (9) is formed between the front printing paper inlet (6) and the front printing paper outlet (7), and an emptying roller (11) is detachably and rotatably arranged at the front printing paper inlet (6); a reverse side printing paper inlet (26), a reverse side printing paper outlet (27) and a reverse side printing piece (28) for printing the reverse side of the roll paper are arranged on one side, far away from the reverse side printing device (5), of the reverse side printing device (5), the reverse side printing paper outlet (27) is positioned on one side, far away from the base (1), of the reverse side printing paper inlet (26), the reverse side printing piece (28) is positioned on one side, far away from the base (1), of the reverse side printing paper outlet (27), and a reverse side printing channel (29) is formed between the reverse side printing paper inlet (26) and the reverse side printing paper outlet (27); a conveying mechanism (18) is arranged between the front side printing device (4) and the back side printing device (5).

2. A perfecting printing press for a web as claimed in claim 1, characterized in that: the material discharging roller (11) is detachably and fixedly provided with positioning plates (12) along the two axial ends.

3. A perfecting printing press for a web as claimed in claim 1, characterized in that: the reverse side printing device (5) is rotatably provided with a paper feeding roller (30), the paper feeding roller (30) is arranged at the reverse side printing paper feeding port (26), and the paper feeding roller (30) is provided with limiting baffles (33) along the two axial ends.

4. A perfecting printing press for a web as claimed in claim 3, characterized in that: and the opposite side walls of the limiting baffle (33) which are close to each other are provided with elastic layers (35).

5. A perfecting printing press for a web as claimed in claim 3, characterized in that: the limiting baffle (33) is arranged on the paper feeding roller (30) in a sliding mode along the axial direction of the paper feeding roller (30), and a fixing assembly (34) used for connecting and fixing the limiting baffle (33) and the paper feeding roller (30) is arranged between the limiting baffle (33) and the paper feeding roller.

6. A perfecting printing press for a web as claimed in claim 5, characterized in that: the limiting baffle (33) comprises a sliding part (331) and a limiting part (332), the sliding part (331) is arranged on the paper feeding roller (30) in a sliding mode along the axial direction of the paper feeding roller (30), and the limiting part (332) is located at one end, away from the paper feeding roller (30), of the sliding part (331); fixed subassembly (34) include mounting (341), slip hole (342) and fixed slot (343), and slip hole (342) set up on slip portion (331) keep away from the lateral wall of advancing paper roll (30), and fixed slot (343) set up on the lateral wall that advances paper roll (30) and be close to slip portion (331), and mounting (341) wear to establish slip hole (342) and are arranged in fixed slot (343), mounting (341) and slip hole (342) relative sliding connection.

7. A perfecting printing press for a web as claimed in claim 1, characterized in that: the paper collecting device is characterized in that one end, close to the base (1), of the first support (2) is rotatably provided with a first connecting rod (13), a first limiting component (14) for fixing the first connecting rod (13) is arranged on the base (1), a first fixing rod (16) is fixedly arranged at the end, far away from the first support (2), of the first connecting rod (13), and a cloth pocket (17) for collecting paper is arranged between the first fixing rod (16) and the first connecting rod (13).

8. A perfecting printing press for a web as claimed in claim 1, characterized in that: one end of the second support (3) close to the base (1) is rotatably provided with a second connecting rod (19), the base (1) is provided with a second limiting component (20) for fixing the second connecting rod (19), and the end part of the second connecting rod (19) far away from the second support (3) is provided with a second fixing rod (24).

9. A perfecting printing press for a web as claimed in claim 8, characterized in that: and a roller (25) is rotatably arranged on the second fixing rod (24).

10. A perfecting printing press for a web as claimed in claim 1, characterized in that: the conveying mechanism (18) comprises a first conveying assembly (181) and a second conveying assembly (182), wherein the first conveying assembly (181) is positioned on the first support (2), and the second conveying assembly (182) is positioned on the second support (3); the first conveying assembly (181) comprises a first limiting rod (1811) and a first limiting column (1812) matched with the first limiting rod (1811), the first limiting rod (1811) and the first limiting column (1812) are arranged on the first bracket (2), the first limiting column (1812) is located on one side, away from the base (1), of the first limiting rod (1811), a gap exists between the first limiting column (1812) and the first limiting rod (1811), and the first bracket (2) is provided with a first limiting groove (36) used for clamping the first limiting column (1812); the second conveying assembly (182) comprises a second limiting rod (1821) and a second limiting column (1822) matched with the second limiting rod (1821) for use, the second limiting rod (1821) and the second limiting column (1822) are arranged on the second support (3), the second limiting column (1822) is located on one side, away from the base (1), of the second limiting rod (1821), a gap exists between the second limiting column (1822) and the second limiting rod (1821), and the second support (3) is provided with a second limiting groove (37) used for clamping the second limiting column (1822).