Screen printing machine

Abstract

The screen printing machine comprises a main machine frame, an input device, a printing roller and an output device are sequentially arranged on the main machine frame, a scraper device and a screen frame device are arranged at the position, on the upper side of the printing roller, of the main machine frame, the printing roller comprises a center shaft, a paper receiving roller, a sealing plate and a ventilation plate, and a paper receiving notch and a plurality of rows of adsorption holes are formed in the paper receiving roller. A paper receiving notch is formed in the center shaft, a paper receiving assembly is arranged in the paper receiving notch and comprises a paper clip shaft and a paper clip pressing piece, a paper clip lower plate and a paper blocking strip are arranged on the paper receiving notch, a clip opening cam is arranged on the center shaft, an indexing groove is formed in the clip opening cam, and the end of the paper clip shaft is in transmission connection with a clip opening swing arm of the clip opening cam. The center shaft is provided with a suction cup supporting plate on one side of the ventilation plate, and the suction cup supporting plate is provided with a vacuum suction cup and a suction cup base. The device has the advantages of simple structure, reasonable design, high printing efficiency, high yield and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a printing machine, especially to a silk screen printing machine. BACKGROUND

[0002] The printing of the conventional silk screen printing machine adopts the main motor input to convert the output through multiple mechanical structures to provide the drive for each mechanism, such as the intermittent rotation of the printing cylinder, the reciprocating translation of the screen frame device, the periodic up-and-down movement of the scraper device, and the lateral movement of the air pull gauge device, and therefore the relative fixed function relationship between each movement is maintained by the mechanical structure. This driving mode is not only complex in structure, but also slow in speed and low in efficiency. In addition, the printing is performed by clamping the paper with the paper biting teeth on the roller and cooperating with the moving screen frame, and after the printing of a certain distance, the paper is released to be naturally stretched and transferred to the paper passing table. When printing thick paper or hard paper, the paper is rebounded due to its own tension after the teeth clamp is released, which not only easily damages the printed graphics and texts by colliding with the screen frame, but also easily deviates under the action of its own weight, affecting the printing and yield. SUMMARY

[0003] The utility model aims at solving the deficiency of the prior art, and provides a silk screen printing machine which is simple in structure, reasonable in design, high in printing efficiency, and high in yield.

[0004] The utility model solves its technical problem adopts the technical scheme that a kind of silk screen printing machine, including mainframe, input device, printing roller are sequentially equipped on the mainframe, scraper device is equipped on the printing roller upper side of the mainframe, and the net frame device that cooperation scraper device prints, the printing roller includes central shaft, paper receiving roller is sleeved on the central shaft, the central shaft is equipped with sealing plate, air passage plate respectively in the both ends of paper receiving roller, paper receiving assembly is equipped on the paper receiving roller, and the surface of paper receiving roller is evenly equipped with several rows of adsorption holes along its axial direction;Paper receiving groove is equipped on the paper receiving roller, and paper receiving assembly is arranged in paper receiving groove, and the paper receiving assembly includes paper clamp shaft, and the paper clamp shaft is arranged in the inner chamber of paper receiving roller and is rotatably connected with sealing plate, several paper clamp pressing pieces are rotatably equipped on the paper clamp shaft at paper receiving groove, paper clamp lower plate is equipped on the side of paper receiving groove towards input device, and the paper clamp pressing piece can be abutted on paper clamp lower plate after rotation, the both sides of paper clamp lower plate corresponding paper clamp pressing piece are equipped with paper stop strip, the open clamp cam is sleeved on the side of central shaft in sealing plate, degree groove is equipped on the open clamp cam along its circumferential direction, the end of paper clamp shaft penetrates sealing plate and is equipped with open clamp swing arm with transmission connection of open clamp cam on end, riveting degree bearing embedded in degree groove is riveted on the open clamp swing arm;Sucking disc support plate is equipped on the side of central shaft in air passage plate, and vacuum chuck is equipped on the sucking disc support plate, and sucking disc seat is communicated with adsorption hole.Using the above structure, by setting paper receiving assembly in printing roller, the surface of printing roller is kept flat, and the structure is more compact, then the paper clamp pressing piece is controlled to close by open clamp cam to clamp paper with paper clamp lower plate and convey to the surface of printing roller, paper is adsorbed on the surface of printing roller by vacuum chuck when printing, when printing roller rotates to a certain angle, paper clamp pressing piece releases paper, and paper can be firmly attached to the surface of printing roller under the adsorption of vacuum chuck after paper clamp pressing piece releases paper, avoid paper to rebound or shift due to its own tension or weight, improve printing quality and yield, after printing, vacuum chuck changes from adsorption to blowing, and paper is separated from printing roller, ensure the separation efficiency of paper and printing roller, so as to improve the overall printing efficiency.

[0005] As preferred, several intermediate shaft seats are fixedly arranged in the paper receiving groove and sleeved on the outer side of the paper clamp shaft, the top of the intermediate shaft seat coincides with the outer ring of the paper receiving roller, three paper clamp seats are arranged in the intermediate position of the adjacent two intermediate shaft seats, the paper clamp pressing piece is rotatably arranged on the paper clamp seat, the intermediate position of the paper clamp pressing piece is riveted with the paper clamp seat through a hinge pin, and a buffer spring is arranged between the rear end of the paper clamp pressing piece and the paper clamp seat.Using the above structure, the top of the intermediate shaft seat coincides with the outer ring of the paper receiving roller, so that the surface of the paper receiving roller is more flat, and the arrangement of the intermediate shaft seat can also ensure the stable rotation of the paper clamp shaft, the buffer spring is arranged between the paper clamp pressing piece and the paper clamp seat, so that the paper clamp pressing piece is more stable when clamping the paper, and damage to the paper is avoided.

[0006] As preferred, the index groove comprises a first open clamping part at the upper part of the index groove and deviated to the output device side, a closed clamping part arranged in the counterclockwise direction of the index groove and forming a closed loop with the first open clamping part, a second open clamping part, and a transition part. The first open clamping part and the second open clamping part are arc-shaped grooves recessed towards the open clamping cam shaft center, the closed clamping part is a circular arc groove with the open clamping cam shaft center as the center, and the transition part is an arc-shaped groove connecting the bottom of the second open clamping part groove and the top of the first open clamping part groove. The main frame is provided with an open clamping adjusting motor and an adjusting shaft in driving connection with the open clamping adjusting motor. The adjusting shaft is provided with an adjusting cam, and the open clamping cam and the adjusting cam are provided with an adjusting connecting arm therebetween. With the above structure, when the open clamping swing arm is located in the first open clamping part, the paper clamp pressing piece quickly realizes opening and closing to clamp the paper, when the open clamping swing arm is located in the closed clamping part, the paper clamp pressing piece firmly clamps the paper, facilitating the vacuum suction cup to accurately adsorb the paper on the surface of the paper receiving roller, when the open clamping swing arm is located in the second open clamping part, the paper has been firmly adsorbed on the surface of the paper receiving roller, and the paper clamp pressing piece is opened to facilitate the separation of the subsequent paper and the paper receiving roller, and when the open clamping swing arm is located in the transition part, the paper clamp pressing piece is slowly closed to avoid affecting the separation of the paper and the paper receiving roller. The open clamping adjusting motor controls the adjusting cam to control the opening and closing time of the paper clamp pressing piece.

[0007] As preferred, the end surface of the paper receiving roller is provided with a plurality of adsorption cavities along the axial direction thereof, each of the adsorption cavities is in communication with two groups of adsorption holes, the air vent plate is provided with an air vent corresponding to each adsorption cavity, the suction cup seat is provided with a suction cup cavity corresponding to the upper side of the paper receiving roller and matched with adjacent several air vents, the suction cup seat is provided with a blowing port matched with the air vent on the side of the suction cup cavity along the rotation direction of the paper receiving roller, and the main frame is provided with an adjusting fixed shaft and an adjusting strip between the adjusting fixed shaft and the suction cup support plate. With the above structure, as the printing roller rotates, the vacuum suction cup always adsorbs the part of the paper to be printed on the surface of the roller through the suction cup cavity cooperating with the plurality of adsorption cavities and cooperates with the screen frame to print, avoiding the paper from deviating or rebounding during printing. After printing, the paper is separated from the paper receiving roller through the blowing port, and the adjusting strip and the adjusting fixed shaft can conveniently adjust the relative angle and position between the vacuum suction cup and the air vent plate.

[0008] As preferred, the main frame is provided with a driving device for driving the printing roller and the screen frame device to work under the lower side of the printing roller, the driving device comprises a first driving cavity and a second driving cavity respectively arranged on the two sides of the main frame, the outer sides of the first driving cavity and the second driving cavity are respectively provided with a transparent panel, the driving transmission shaft is rotatably arranged between the first driving cavity and the second driving cavity, the two ends of the driving transmission shaft and the central shaft respectively extend into the inner cavities of the first driving cavity and the second driving cavity, the first servo motor is arranged on the first driving cavity of the main frame, the first input gear is arranged on the inner side of the first driving cavity of the first servo motor, the first driving transmission shaft is sleeved with the first driven gear and the first driving gear in the first driving cavity, the first driven gear is engaged with the first input gear, the central shaft is sleeved with the first output gear engaged with the first driving gear in the first driving cavity, the first output gear is in transmission connection with the screen frame device, the second servo motor is arranged on the second driving cavity of the main frame, the second input gear is arranged on the inner side of the second driving cavity of the second servo motor, the driving transmission shaft is sleeved with the second driving gear and the second transmission gear in the second driving cavity, the second transmission gear is provided with the second driven gear engaged with the second input gear, the central shaft is sleeved with the second output gear and the second support gear engaged with the second driving gear and the second transmission gear respectively in the second driving cavity, the second output gear drives the central shaft to rotate, the second support gear is in transmission connection with the screen frame device, the first output gear and the second support gear can rotate relative to the central shaft, and the second transmission gear can rotate relative to the driving transmission shaft. By adopting the above structure, the first driving cavity, the second driving cavity and the transparent panel are arranged, so that the driving device is convenient to observe and maintain, the screen frame device and the printing roller are driven by the first servo motor and the second servo motor respectively, before printing, the position of the screen frame device can be adjusted by driving the first servo motor to achieve accurate alignment, or the screen frame device and the printing roller can be synchronously worked by adjusting the rotating speed of the first servo motor and the second servo motor, so that the printing efficiency and the printing precision are improved, and the gears for driving the screen frame device and the printing roller to work are arranged at the two ends of the central shaft and the driving transmission shaft, so that the structure is simplified and the transmission stability is improved.

[0009] As preferred, the screen frame device comprises a screen frame slidably arranged on the main frame, the two sides of the main frame are provided with a rack slide rail, the screen frame is slidably provided with a plurality of rack blocks on the rack slide rail, and the two sides of the screen frame are further provided with screen frame racks in transmission connection with the driving device. By adopting the above structure, the transmission stability of the screen frame device is improved by the meshing of the first output gear, the second support gear and the screen frame racks on the two sides of the screen frame device.

[0010] As preferred, the input device comprises an input bridge plate arranged on the main frame, the main frame is provided with a pull gauge large bridge plate on the side close to the printing roller, an input conveying belt is arranged between the input bridge plate and the pull gauge large bridge plate, the main frame is provided with a swing shaft on the upper side of the pull gauge large bridge plate, and a plurality of upper paper pressing pieces are arranged side by side on the swing shaft towards the printing roller. With the above structure, the efficiency and stability of paper input are improved.

[0011] As preferred, the main frame is provided with a gas pull gauge device on the side close to the printing roller of the input device, the gas pull gauge device is two groups, and the two groups of gas pull gauge devices are symmetrically arranged on the two sides of the pull gauge large bridge plate, the gas pull gauge device comprises a pull gauge sliding rail, a pull gauge guide rail and a pull gauge adjusting rod, the main frame is provided with a pull gauge adjusting motor for driving the pull gauge adjusting rod to rotate, two side plates are arranged on the pull gauge sliding rail, the pull gauge guide rail and the pull gauge adjusting rod, a front panel, a rear panel, a pull gauge motor and a speed reducer are arranged between the two side plates, the output end of the speed reducer penetrates through the front panel and is provided with a pull gauge swing arm at the end, the top of the front panel and the rear panel is provided with a pull gauge bridge plate, a movable slot is arranged on the pull gauge bridge plate along the swing direction of the pull gauge swing arm, a gas nozzle sliding block is slidably arranged in the movable slot, a gas nozzle connecting arm is arranged at the bottom of the gas nozzle sliding block, a rotating shaft is arranged on the gas nozzle connecting arm, a pull gauge bearing is riveted on the rotating shaft corresponding to the position of the pull gauge swing arm, a swing arm notch is arranged at the top end of the pull gauge swing arm and sleeved on the outer side of the pull gauge bearing, a gas cavity is arranged on the gas nozzle sliding block, a connecting hole communicating with the gas cavity is arranged on the sidewall of the gas nozzle sliding block, a pull gauge plate is embedded on the upper side of the gas cavity of the gas nozzle sliding block, a plurality of gas holes are uniformly arranged on the pull gauge plate, a plurality of gas nozzle sliding rails for sliding of the gas nozzle sliding block are arranged between the two side plates, an upper pressing plate is arranged on the upper side of the pull gauge bridge plate corresponding to the position of the movable slot, a guide plate is arranged on the side of the upper pressing plate in the direction in which the paper enters and is arranged obliquely, a plurality of steel ball holes are uniformly arranged on the upper pressing plate corresponding to the pull gauge plate of the gas nozzle sliding block, glass beads are arranged in the steel ball holes, a steel ball seat is arranged on the upper side of the upper pressing plate, and a limiting slot is arranged on the steel ball seat corresponding to the glass beads. With the above structure, the gas nozzle sliding block is driven to slide by the pull gauge motor, which is convenient to control and has fast positioning speed, the gas cavity is arranged on the gas nozzle sliding block, and the pull gauge plate is embedded on the upper end of the gas cavity, so as to reduce the volume of the whole device, the pull gauge plate can better adsorb the paper by arranging the upper pressing plate, the guide plate can make the paper enter better between the upper pressing plate and the pull gauge plate, so as to avoid damage to the paper, and the plurality of glass beads can press the paper, so as to avoid that the edge of the paper is raised to affect the adsorption effect of the pull gauge plate.

[0012] As preferred, the scraper device comprises a scraper fixing base, both sides of the scraper fixing base are provided with scraper swing arm bases, one end of the scraper swing arm base is rotationally connected with the main frame, a scraper adjusting cylinder is arranged between the middle section of the scraper swing arm base and the main frame, both sides of the scraper fixing base are provided with horizontally adjusting nuts fixedly connected with the scraper swing arm bases, the scraper fixing base is provided with horizontally adjusting rods screwed with the horizontally adjusting nuts, the lower side of the scraper fixing base is provided with a scraper square shaft through a scraper guide rail and a scraper screw rod, both ends of the scraper square shaft are provided with angle adjusting bases, the lower side of the two angle adjusting bases is provided with an upper scraper, the lower end of the upper scraper is provided with a rubber scraping piece, the lower side of the scraper fixing base is provided with a rubber blocking plate on the side of the upper scraper facing the input device through a rubber blocking cylinder, the side of the scraper fixing base facing the output device is provided with a rubber blocking rotating shaft and a rubber blocking motor driving the rubber blocking rotating shaft to rotate, both ends of the rubber blocking rotating shaft are provided with rubber blocking swing arms, and the rubber blocking swing arms are hingedly provided with a rubber blocking groove. By adopting the above structure, the upper scraper is controlled to overturn on the main frame through the scraper adjusting cylinder, the front and back positions of the upper scraper are adjusted through the horizontally adjusting nuts and the horizontally adjusting rods arranged on the scraper fixing base, and the up and down positions of the upper scraper are conveniently adjusted through the scraper guide rail and the scraper screw rod.

[0013] As preferred, the output device comprises a rear air suction plate hingedly arranged with the main frame, an output adjusting cylinder is further arranged between the rear air suction plate and the main frame, an output conveying belt is arranged on the rear air suction plate, an output bridge plate is arranged on the main frame on the side of the rear air suction plate close to the printing roller, a plurality of rear rubber strips are arranged side by side on the side of the output bridge plate close to the printing roller, a paper feeding wheel shaft is arranged on the upper edge of the main frame on the side of the rear air suction plate close to the printing roller, and a rear conveying wheel is rotationally arranged on the paper feeding wheel shaft through a rear conveying wheel frame. By adopting the above structure, the efficiency of paper output is improved.

[0014] The printing machine has the advantages of simple structure, reasonable design, high printing efficiency and high product yield. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is an output end structure schematic view of an embodiment of the utility model;

[0016] Figure 2 is an input end structure schematic view of an embodiment of the utility model;

[0017] Figure 3 is a kind of sectional view of an embodiment of the utility model;

[0018] Figure 4 is the structure schematic view of the driving device of the utility model;

[0019] Figure 5 is the structure schematic view of the scraper device of the utility model;

[0020] Figure 6Is the structure diagram of the printing roller of the utility model;

[0021] Figure 7 Is a sectional view of the printing roller of the utility model;

[0022] Figure 8 Is the structure diagram of the paper receiving assembly of the utility model;

[0023] Figure 9 Is a side view of the printing roller of the utility model;

[0024] Figure 10 Is a side view of the opening clamp cam of the utility model;

[0025] Figure 11 Is the structure diagram of the air vent plate and the suction cup seat of the utility model;

[0026] Figure 12 Is the installation structure diagram of the air gauge device of the utility model

[0027] Figure 13 Is the output end structure diagram of the air gauge device of the utility model;

[0028] Figure 14 Is the input end structure diagram of the air gauge device of the utility model;

[0029] Figure 15 Is the structure diagram of the air gauge motor and the air nozzle sliding block of the utility model;

[0030] Figure 16 Is the structure diagram of the air gauge swing arm of the utility model;

[0031] Figure 17 Is a sectional view of the air nozzle sliding block of the utility model.

[0032] In the figure: 1, main frame; 2, input device; 21, input bridge plate; 22, pull gauge large over bridge plate; 23, input conveyor belt; 24, swing shaft; 25, upper paper pressing piece; 3, printing roller; 31, center shaft; 32, paper receiving roller; 321, suction hole; 322, paper receiving notch; 323, suction cavity; 33, sealing plate; 34, air vent plate; 341, air vent; 35, paper receiving assembly; 351, paper clamp shaft; 352, paper clamp pressing piece; 353, paper clamp lower plate; 354, paper blocking strip; 355, intermediate shaft seat; 356, paper clamp seat; 357, hinge pin; 358, buffer spring; 36, opening clamp cam; 361, indexing groove; 362, first opening clamp part; 363, closing clamp part; 364, second opening clamp part; 365, transition part; 366, opening clamp adjusting motor; 367, adjusting shaft; 368, adjusting cam; 369, adjusting connecting arm; 37, opening clamp swing arm; 371, indexing bearing; 38, suction disc support plate; 381, vacuum suction disc; 382, suction disc seat; 383, suction disc cavity; 384, air blowing port; 385, adjusting fixed shaft; 386, adjusting strip; 4, output device; 41, rear suction air plate; 42, output adjusting air cylinder; 43, output conveyor belt; 44, output over bridge plate; 45, rear rubber strip; 46, paper feeding wheel shaft; 47, rear feeding wheel frame; 48, rear conveying wheel; 5, doctor blade device; 51, doctor blade fixed seat; 511, horizontal adjusting nut; 512, horizontal adjusting lever; 52, doctor blade swing arm seat; 521, doctor blade adjusting air cylinder; 53, doctor blade guide rail; 54, doctor blade screw rod; 55, doctor blade square shaft; 56, angle adjusting seat; 57, upper doctor blade; 571, rubber scraping piece; 58, rubber blocking plate; 581, rubber blocking air cylinder; 59, rubber blocking groove; 591, rubber blocking rotating shaft; 592, rubber blocking motor; 593, rubber blocking swing arm; 6, screen frame device; 61, screen frame; 62, rack slide rail; 63, rack slide block; 64, screen frame rack; 7, driving device; 71, first driving cavity; 711, first servo motor; 712, first input gear; 713, first driven gear; 714, first driving gear; 715, first output gear; 72, second driving cavity; 721, second servo motor; 722, second input gear; 723, second driving gear; 724, second transmission gear; 725, second driven gear; 726, second output gear; 727, second support gear; 73, transparent panel; 74, driving transmission shaft; 8, air pull gauge device; 81, pull gauge slide rail; 82, pull gauge guide rail; 83, pull gauge adjusting lever; 84, pull gauge adjusting motor; 85, side plate; 851, air nozzle slide rail; 852, upper pressing plate; 853, guide plate; 854, steel ball hole; 855, glass bead; 856, steel ball seat; 857, limiting groove; 86, front panel; 87, rear panel; 88, pull gauge motor; 881, speed reducer; 882, pull gauge swing arm; 883, swing arm notch; 89, pull gauge over bridge plate; 891, movable groove; 892, air nozzle slide block; 893, air nozzle connecting arm;894. Rotating shaft; 895. Pull gauge bearing; 896. Air chamber; 897. Connecting hole; 898. Pull gauge plate; 899. Air hole. Detailed Implementation

[0033] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example

[0034] like Figures 1 to 2 The screen printing machine shown includes a main frame 1, on which an input device 2, a printing roller 3, and an output device 4 are sequentially arranged. The printing roller 3 includes a central shaft 31 and a paper receiving roller 32 sleeved on the central shaft 31. The main frame 1 has a doctor blade device 5 and a screen frame device 6 that cooperates with the doctor blade device 5 for printing on the upper side of the printing roller 3. The input device 2 includes an input bridge plate 21 disposed on the main frame 1. The main frame 1 has a guide rail large bridge plate 22 on the side of the input bridge plate 21 near the printing roller 3. An input conveyor belt 23 is disposed between the input bridge plate 21 and the guide rail large bridge plate 22. The main frame 1 has a swing shaft 24 on the upper side of the guide rail large bridge plate 22, and the swing shaft 24 faces the printing direction. Several upper paper pressing strips 25 are arranged side by side on one side of the roller 3, which improves the efficiency and stability of paper input; the output device 4 includes a rear suction plate 41 hinged to the main frame 1, and an output regulating cylinder 42 is also provided between the rear suction plate 41 and the main frame 1. An output conveyor belt 43 is provided on the rear suction plate 41. An output bridge plate 44 is provided on the side of the rear suction plate 41 near the printing roller 3. Several rear adhesive strips 45 are arranged side by side on the side of the output bridge plate 44 facing the printing roller 3. A paper feeding roller shaft 46 is provided on the upper side of the rear suction plate 41 near the printing roller 3. A rear conveyor wheel 48 is rotatably provided on the paper feeding roller shaft 46 through a rear feed roller frame 47, which improves the efficiency of paper output.

[0035] like Figure 3As shown, the main rack 1 is provided with a driving device 7 for driving the printing roller 3 and the screen frame device 6 to work, the driving device 7 includes a first driving cavity 71 and a second driving cavity 72 arranged on both sides of the main rack 1 respectively, and a transparent panel 73 is arranged outside the first driving cavity 71 and the second driving cavity 72, the main rack 1 is rotatably provided with a driving transmission shaft 74 between the first driving cavity 71 and the second driving cavity 72, both ends of the driving transmission shaft 74 and the central shaft 31 extend into the cavities of the first driving cavity 71 and the second driving cavity 72 respectively, the main rack 1 is provided with a first servo motor 711 on the first driving cavity 71, the first servo motor 711 is provided with a first input gear 712 inside the first driving cavity 71, the driving transmission shaft 74 is sleeved with a first driven gear 713 and a first driving gear 714 in the first driving cavity 71, the first driven gear 713 is engaged with the first input gear 712, the central shaft 31 is sleeved with a first output gear 715 engaged with the first driving gear 714 in the first driving cavity 71, the first output gear 715 is drivingly connected with the screen frame device 6, the main rack 1 is provided with a second servo motor 721 on the second driving cavity 72, the second servo motor 721 is provided with a second input gear 722 inside the second driving cavity 72, the driving transmission shaft 74 is sleeved with a second driving gear 723 and a second transmission gear 724 in the second driving cavity 72, the second transmission gear 724 is provided with a second driven gear 725 engaged with the second input gear 722, the central shaft 31 is sleeved with a second output gear 726 and a second support gear 727 engaged with the second driving gear 723 and the second transmission gear 724 respectively in the second driving cavity 72, the second output gear 726 drives the central shaft 31 to rotate, the second support gear 727 is drivingly connected with the screen frame device 6, the first output gear 715 and the second support gear 727 can rotate relative to the central shaft 31, and the second transmission gear 724 can rotate relative to the driving transmission shaft 74, by arranging the first driving cavity 71, the second driving cavity 72 and the transparent panel 73, the driving device 7 is convenient to observe and maintain, the screen frame device 6 and the printing roller 3 are driven by the first servo motor 711 and the second servo motor 721 respectively, before printing, the position of the screen frame device 6 can be adjusted by driving the first servo motor 711 to achieve accurate alignment, the screen frame device 6 and the printing roller 3 can also work synchronously by adjusting the rotating speed of the first servo motor 711 and the second servo motor 721, the printing efficiency and the printing precision are improved, and the gears for driving the screen frame device 6 and the printing roller 3 to work are arranged at both ends of the central shaft 31 and the driving transmission shaft 74, so that the structure is simplified and the transmission stability is improved.

[0036] As Figure 4As shown, the screen frame device 6 includes a screen frame 61 slidingly arranged on the main frame 1, the main frame 1 is provided with a rack slide rail 62 on both sides, the screen frame 61 is slidingly provided with a plurality of rack slides 63 on the rack slide rail 62, the screen frame 61 is further provided with a screen frame rack 64 in transmission connection with the driving device 7 on both sides, the screen frame rack 64 on both sides of the screen frame 61 is located on the upper side of the first driving cavity 71 and the second driving cavity 72 and is in transmission connection with the first output gear 715 and the second support gear 727, the first output gear 715 and the second support gear 727 are engaged with the screen frame rack 64 on both sides of the screen frame device 6, thereby improving the transmission stability of the screen frame device 6.

[0037] As shown in the figure, Figure 5 As shown, the scraper device 5 includes a scraper fixed seat 51, the scraper fixed seat 51 is provided with a scraper swing arm seat 52 on both sides, one end of the scraper swing arm seat 52 is in rotary connection with the main frame 1, a scraper adjusting cylinder 521 is arranged between the middle of the scraper swing arm seat 52 and the main frame 1, horizontal adjusting nuts 511 are arranged on both sides of the scraper fixed seat 51 and are fixedly connected with the scraper swing arm seat 52, horizontal adjusting rods 512 are arranged on the scraper fixed seat 51 and are screwed with the horizontal adjusting nuts 511, a scraper square shaft 55 is arranged on the lower side of the scraper fixed seat 51 through a scraper guide rail 53 and a scraper lead screw 54, angle adjusting seats 56 are arranged at both ends of the scraper square shaft 55, upper scrapers 57 are arranged on the lower side of the two angle adjusting seats 56, rubber scraping skins 571 are arranged at the lower end of the upper scrapers 57, rubber blocking plates 58 are arranged on the side of the upper scrapers 57 facing the input device 2 through a rubber blocking cylinder 581 on the lower side of the scraper fixed seat 51, rubber blocking shafts 591 are arranged on the side of the scraper fixed seat 51 facing the output device 4, rubber blocking motors 592 are arranged to drive the rubber blocking shafts 591 to rotate, rubber blocking swing arms 593 are arranged at both ends of the rubber blocking shafts 591, and rubber blocking grooves 59 are hingedly arranged between the two rubber blocking swing arms 593, the scraper adjusting cylinder 521 is arranged to control the overturning of the upper scrapers 57 on the main frame 1, the horizontal adjusting nuts 511 and the horizontal adjusting rods 512 are arranged on the scraper fixed seat 51 to adjust the front and back positions of the upper scrapers 57, and the scraper guide rail 53 and the scraper lead screw 54 can conveniently adjust the up and down positions of the upper scrapers 57.

[0038] As shown in the figure, Figures 6 to 11As shown, the central shaft 31 is provided with an end plate 33 and a ventilation plate 34 at two ends of the paper receiving roller 32, the paper receiving roller 32 is provided with a paper receiving assembly 35, the surface of the paper receiving roller 32 is uniformly provided with a plurality of rows of adsorption holes 321 along the axial direction, the end surface of the paper receiving roller 32 is provided with a plurality of adsorption cavities 323 along the axial direction, each adsorption cavity 323 is communicated with two groups of adsorption holes 321, the paper receiving roller 32 is provided with a paper receiving notch 322, and the paper receiving assembly 35 is arranged in the paper receiving notch 322, so that the surface of the printing roller 3 is kept flat and the structure is more compact.

[0039] The paper receiving assembly 35 comprises a paper clamp shaft 351 arranged in the inner cavity of the paper receiving roller 32 and rotationally connected with the sealing plate 33, a plurality of paper clamp pressing pieces 352 are rotationally arranged on the paper clamp shaft 351 at the paper receiving notch 322, the paper clamp pressing pieces 352 can abut on the paper clamp lower plate 353 on the side of the input device 2, the paper clamp lower plate 353 is provided with a paper blocking strip 354 corresponding to the two sides of the paper clamp pressing piece 352, the open clamp cam 36 is arranged on the side of the sealing plate 33 of the central shaft 31, the open clamp cam 36 is provided with a division slot 361 along the circumference thereof, the end of the paper clamp shaft 351 penetrates through the sealing plate 33 and is provided with an open clamp swing arm 37 in transmission connection with the open clamp cam 36, the open clamp swing arm 37 is riveted with a division bearing 371 embedded in the division slot 361; the central shaft 31 is provided with a suction disc support plate 38 on the side of the air passage plate 34, the suction disc support plate 38 is provided with a vacuum suction disc 381 and a suction disc seat 382 in communication with the suction hole 321, the paper is clamped by the paper clamp pressing piece 352 and the paper clamp lower plate 353 to be conveyed to the surface of the printing roller 3 by controlling the closing of the paper clamp pressing piece 352 by the open clamp cam 36, the paper is adsorbed on the surface of the printing roller 3 by the vacuum suction disc 381 during printing, when the printing roller 3 rotates to a certain angle, the paper clamp pressing piece 352 releases the paper, the paper can still be firmly attached to the surface of the printing roller 3 under the adsorption of the vacuum suction disc 381 after the paper clamp pressing piece 352 releases the paper, avoiding the rebound or displacement of the paper due to the action of its own tension or weight, improving the printing quality and yield, after printing, the vacuum suction disc 381 changes from adsorption to blowing, the paper is separated from the printing roller 3, ensuring the separation efficiency of the paper and the printing roller 3, thereby improving the overall printing efficiency; a plurality of intermediate shaft seats 355 are fixedly arranged in the paper receiving notch 322 and sleeved on the outer side of the paper clamp shaft 351, the top of the intermediate shaft seat 355 coincides with the outer ring of the paper receiving roller 32, three paper clamp seats 356 are arranged in the middle of the paper clamp shaft 351 between two adjacent intermediate shaft seats 355, the paper clamp pressing piece 352 is rotationally arranged on the paper clamp seat 356, the middle position of the paper clamp pressing piece 352 is riveted with the paper clamp seat 356 through a hinge pin 357, the buffer spring 358 is arranged between the rear end of the paper clamp pressing piece 352 and the paper clamp seat 356, the top of the intermediate shaft seat 355 coincides with the outer ring of the paper receiving roller 32, making the surface of the paper receiving roller 32 more flat, and the arrangement of the intermediate shaft seat 355 can also ensure the stable rotation of the paper clamp shaft 351 as a whole, the paper clamp pressing piece 352 is more stable when clamping the paper by arranging the buffer spring 358 between the paper clamp pressing piece 352 and the paper clamp seat 356, avoiding the damage of the paper clamp pressing piece 352 to the paper.

[0040] The indexing groove 361 includes a first open clamp part 362 on the upper part of the indexing groove 361, which is biased to the output device 4 side, and a closed clamp part 363, a second open clamp part 364, and a transition part 365 arranged in the counterclockwise direction of the indexing groove 361, forming a closed loop with the first open clamp part 362. The first open clamp part 362 and the second open clamp part 364 are arc-shaped grooves recessed in the direction of the axis of the open clamp cam 36, the closed clamp part 363 is a circular arc groove with the axis of the open clamp cam 36 as the center, and the transition part 365 is an arc-shaped groove connecting the groove bottom of the second open clamp part 364 and the groove top of the first open clamp part 362. The main frame 1 is provided with an open clamp adjusting motor 366 and an adjusting shaft 367 in transmission connection with the open clamp adjusting motor 366. The adjusting shaft 367 is provided with an adjusting cam 368. The open clamp cam 36 and the adjusting cam 368 are connected by an adjusting connecting arm 369. When the open clamp swing arm 37 is located in the first open clamp part 362, the paper clamp pressing piece 352 quickly opens and closes to clamp the paper. When the open clamp swing arm 37 is located in the closed clamp part 363, the paper clamp pressing piece 352 firmly clamps the paper, facilitating the precise adsorption of the vacuum suction cup 381 on the surface of the paper receiving roller 32. When the open clamp swing arm 37 is located in the second open clamp part 364, the paper has been firmly adsorbed on the surface of the paper receiving roller 32, and the paper clamp pressing piece 352 is opened to facilitate the separation of the subsequent paper and the paper receiving roller 32. When the open clamp swing arm 37 is located in the transition part 365, the paper clamp pressing piece 352 is slowly closed to avoid affecting the separation of the paper and the paper receiving roller 32. The open clamp adjusting motor 366 controls the adjusting cam 368 to control the opening and closing time of the paper clamp pressing piece 352.

[0041] The air vent plate 34 is provided with an air vent 341 corresponding to the adsorption cavity 323, and the suction cup seat 382 is provided with a suction cup cavity 383 corresponding to the upper side of the paper receiving roller 32, which is matched with several adjacent air vents 341. The suction cup seat 382 is provided with a blow port 384 matched with the air vent 341 on the side of the suction cup cavity 383 along the rotation direction of the paper receiving roller 32. The main frame 1 is provided with an adjusting fixed shaft 385, and the adjusting fixed shaft 385 and the suction cup support plate 38 are connected by an adjusting strip 386. With the rotation of the printing roller 3, the vacuum suction cup 381 always adsorbs the part of the paper to be printed on the surface of the roller through the cooperation of the suction cup cavity 383 and multiple groups of adsorption cavities 323, and the printing is carried out in cooperation with the screen frame. During printing, the paper is prevented from shifting or rebounding. After printing, the paper is separated from the paper receiving roller 32 by the blow port 384, and the adjusting strip 386 and the adjusting fixed shaft 385 can conveniently adjust the relative angle and position between the vacuum suction cup 381 and the air vent plate 34.

[0042] As Figures 12 to 17As shown, the main rack 1 is provided with air gauge devices 8 on the side close to the printing roller 3 of the input device 2, the air gauge devices 8 are two groups, the two groups of air gauge devices 8 are symmetrically arranged on the two sides of the gauge large bridge plate 22, the air gauge device 8 includes a gauge slide rail 81, a gauge guide rail 82, a gauge adjusting rod 83, the main rack 1 is provided with a gauge adjusting motor 84 for driving the rotation of the gauge adjusting rod 83, the gauge slide rail 81, the gauge guide rail 82 and the gauge adjusting rod 83 are provided with two side plates 85, the two side plates 85 are provided with a front panel 86, a rear panel 87, a gauge motor 88 and a speed reducer 881, the output end of the speed reducer 881 penetrates through the front panel 86 and is provided with a gauge swing arm 882 at the end, the top of the front panel 86 and the rear panel 87 is provided with a gauge bridge plate 89, the gauge bridge plate 89 is provided with a movable slot 891 along the swing direction of the gauge swing arm 882, the movable slot 891 is slidably provided with an air nozzle sliding block 892, the bottom of the air nozzle sliding block 892 is provided with an air nozzle connecting arm 893, the air nozzle connecting arm 893 is provided with a rotating shaft 894, the rotating shaft 894 is riveted with a gauge bearing 895 at the position corresponding to the gauge swing arm 882, the top end of the gauge swing arm 882 is provided with a swing arm notch 883 sleeved on the outside of the gauge bearing 895, the air nozzle sliding block 892 is provided with an air cavity 896, the sidewall of the air nozzle sliding block 892 is provided with a connecting hole 897 communicating with the air cavity 896, the air nozzle sliding block 892 is embedded with a gauge plate 898 on the upper side of the air cavity 896, the gauge plate 898 is uniformly provided with air holes 899, a plurality of air nozzle sliding rails 851 for sliding of the air nozzle sliding block 892 are arranged between the two side plates 85, the upper side of the gauge bridge plate 89 is provided with an upper pressing plate 852 corresponding to the position of the movable slot 891, the upper pressing plate 852 is provided with an inclined guide plate 853 on the side in the direction of paper entering, a plurality of steel ball holes 854 are uniformly arranged on the upper pressing plate 852 corresponding to the position of the gauge plate 898 of the air nozzle sliding block 892, glass beads 855 are arranged in the steel ball holes 854, a steel ball seat 856 is arranged on the upper side of the upper pressing plate 852, a limiting groove 857 is arranged on the steel ball seat 856 corresponding to the position of the glass bead 855, the air nozzle sliding block 892 is driven to slide by the gauge motor 88, which is convenient to control and fast in positioning, the air cavity 896 is arranged on the air nozzle sliding block 892, and the gauge plate 898 is embedded on the upper end of the air cavity 896, which reduces the volume of the whole device, the upper pressing plate 852 can better make the gauge plate 898 adsorb the paper, and the guide plate 853 can make the paper better enter between the upper pressing plate 852 and the gauge plate 898, thereby avoiding damage to the paper, a plurality of glass beads 855 are arranged to press the paper, thereby avoiding the edge of the paper from being raised to affect the adsorption effect of the gauge plate 898.

[0043] The above-described embodiment is only a preferred scheme of the present application, and does not limit the present application in any form, and other variants and modifications are possible without departing from the technical scheme recited in the claims.

Claims

1. A screen printing machine, comprising a main frame (1), wherein an input device (2), a printing roller (3), and an output device (4) are sequentially arranged on the main frame (1), and a squeegee device (5) and a screen frame device (6) for printing in conjunction with the squeegee device (5) are provided on the upper side of the printing roller (3) of the main frame (1), characterized in that: The printing roller (3) includes a central shaft (31) and a paper receiving roller (32) sleeved on the central shaft (31). The central shaft (31) has a sealing plate (33) and a ventilation plate (34) at both ends of the paper receiving roller (32). The paper receiving roller (32) is provided with a paper receiving assembly (35). The surface of the paper receiving roller (32) is uniformly provided with several rows of adsorption holes (321) along its axial direction. The paper receiving roller (32) is provided with a paper receiving assembly (35). Paper slot (322), the paper receiving assembly (35) is disposed in the paper receiving slot (322), the paper receiving assembly (35) includes a paper clamp shaft (351), the paper clamp shaft (351) is disposed in the inner cavity of the paper receiving roller (32) and is rotatably connected to the sealing plate (33), the paper clamp shaft (351) is rotatably provided with a plurality of paper clamping plates (352) at the paper receiving slot (322), the paper receiving slot (322) faces the input device (2) A paper clamp lower plate (353) is provided on one side. The paper clamp pressing plate (352) can abut against the paper clamp lower plate (353) after rotation. The paper clamp lower plate (353) is provided with paper stop strips (354) on both sides corresponding to the paper clamp pressing plate (352). The central shaft (31) is fitted with an opening cam (36) on one side of the sealing plate (33). The opening cam (36) is provided with an indexing groove (361) along its circumference. The end of the paper clamp shaft (351) A clamping swing arm (37) is provided at the end of the through sealing plate (33) and is connected to the clamping cam (36) for transmission. A dividing bearing (371) is riveted to the clamping swing arm (37) and embedded in the dividing groove (361). A suction cup support plate (38) is provided on the side of the ventilation plate (34). A vacuum suction cup (381) and a suction cup seat (382) communicating with the suction hole (321) are provided on the suction cup support plate (38).

2. The screen printing machine according to claim 1, characterized in that: The paper receiving slot (322) is fixedly provided with a number of intermediate shaft seats (355) sleeved on the outside of the paper clamp shaft (351). The top of the intermediate shaft seat (355) coincides with the outer ring of the paper receiving roller (32). The paper clamp shaft (351) is provided with three paper clamp seats (356) between two adjacent intermediate shaft seats (355). The paper clamp pressing plate (352) is rotatably set on the paper clamp seat (356). The middle position of the paper clamp pressing plate (352) is riveted to the paper clamp seat (356) by a hinge pin (357). A buffer spring (358) is provided between the rear end of the paper clamp pressing plate (352) and the paper clamp seat (356).

3. The screen printing machine according to claim 1, characterized in that: The indexing groove (361) includes a first opening clamping portion (362) located on its upper part biased towards the output device (4), and a closing clamping portion (363), a second opening clamping portion (364), and a transition portion (365) arranged counterclockwise along the indexing groove (361) to form a closed loop with the first opening clamping portion (362). The first opening clamping portion (362) and the second opening clamping portion (364) are arc-shaped grooves recessed towards the axis of the opening clamping cam (36). The closing clamping portion (363) is formed by the opening clamping cam (36) 36) An arc groove with the axis as the center of the circle, the transition part (365) is connected to the arc groove of the bottom of the second clamping part (364) and the top of the first clamping part (362), the main frame (1) is provided with a clamping adjustment motor (366) and an adjustment shaft (367) that is drivenly connected to the clamping adjustment motor (366), the adjustment shaft (367) is provided with an adjustment cam (368), and an adjustment connecting arm (369) is provided between the clamping cam (36) and the adjustment cam (368).

4. The screen printing machine according to claim 1, characterized in that: The end face of the paper receiving roller (32) is provided with several adsorption chambers (323) along its axial direction. Each adsorption chamber (323) is connected to two sets of adsorption holes (321). The ventilation plate (34) is provided with ventilation ports (341) corresponding to the adsorption chambers (323). The suction cup seat (382) is provided with suction cup chambers (383) matching the adjacent ventilation ports (341) on the upper side of the paper receiving roller (32). The suction cup seat (382) is provided with air blowing ports (384) matching the ventilation ports (341) on the side of the suction cup chamber (383) along the rotation direction of the paper receiving roller (32). The main frame (1) is provided with an adjustment fixing shaft (385). An adjustment strip (386) is provided between the adjustment fixing shaft (385) and the suction cup support plate (38).

5. The screen printing machine according to claim 1, characterized in that: The main frame (1) has a drive device (7) on the lower side of the printing roller (3) for driving the printing roller (3) and the screen frame device (6) to work. The drive device (7) includes a first drive cavity (71) and a second drive cavity (72) respectively disposed on both sides of the main frame (1). The outer sides of the first drive cavity (71) and the second drive cavity (72) are provided with transparent panels (73). The main frame (1) has a drive transmission shaft (74) rotatably disposed between the first drive cavity (71) and the second drive cavity (72). The two ends of the drive transmission shaft (74) and the central shaft (31) extend to respectively. The first drive cavity (71) and the second drive cavity (72) are internal cavities. The main frame (1) is provided with a first servo motor (711) on the first drive cavity (71). The first servo motor (711) is provided with a first input gear (712) inside the first drive cavity (71). The drive transmission shaft (74) is fitted with a first driven gear (713) and a first drive gear (714) inside the first drive cavity (71). The first driven gear (713) meshes with the first input gear (712). The central shaft (31) is fitted with a gear that meshes with the first drive gear (714) inside the first drive cavity (71). 714) The first output gear (715) is engaged with the mesh frame device (6). The main frame (1) is provided with a second servo motor (721) on the second drive cavity (72). The second servo motor (721) is provided with a second input gear (722) inside the second drive cavity (72). The drive transmission shaft (74) is fitted with a second drive gear (723) and a second transmission gear (724) inside the second drive cavity (72). The second transmission gear (724) is provided with a second driven gear that meshes with the second input gear (722). The wheel (725) has a second output gear (726) and a second support gear (727) respectively meshing with the second drive gear (723) and the second transmission gear (724) in the second drive cavity (72). The second output gear (726) drives the central shaft (31) to rotate. The second support gear (727) is connected to the mesh frame device (6) for transmission. The first output gear (715) and the second support gear (727) can rotate relative to the central shaft (31). The second transmission gear (724) can rotate relative to the drive transmission shaft (74).

6. The screen printing machine according to claim 5, characterized in that: The mesh frame device (6) includes a mesh frame (61) slidably mounted on the main frame (1). The main frame (1) has rack and pinion rails (62) on both sides. The mesh frame (61) has a plurality of rack and pinion sliders (63) slidably mounted on the rack and pinion rails (62). The mesh frame (61) also has mesh frame racks (64) on both sides that are connected to the drive device (7) for transmission. The mesh frame racks (64) on both sides of the mesh frame (61) are located on the upper side of the first drive cavity (71) and the second drive cavity (72) respectively and are connected to the first output gear (715) and the second support gear (727) for transmission.

7. The screen printing machine according to claim 1, characterized in that: The input device (2) includes an input bridge plate (21) mounted on the main frame (1). The main frame (1) has a pull gauge large bridge plate (22) on the side of the input bridge plate (21) near the printing roller (3). An input conveyor belt (23) is provided between the input bridge plate (21) and the pull gauge large bridge plate (22). The main frame (1) has a swing shaft (24) on the upper side of the pull gauge large bridge plate (22). Several upper pressure paper sheets (25) are arranged side by side on the side of the swing shaft (24) facing the printing roller (3).

8. The screen printing machine according to claim 7, characterized in that: The main frame (1) has an air pull gauge device (8) on the side of the input device (2) near the printing roller (3). There are two sets of air pull gauge devices (8), which are symmetrically arranged on both sides of the pull gauge bridge plate (22). Each air pull gauge device (8) includes a pull gauge slide rail (81), a pull gauge guide rail (82), and a pull gauge adjusting rod (83). The main frame (1) is equipped with a pull gauge adjusting motor (84) that drives the pull gauge adjusting rod (83) to rotate. The pull gauge slide rail (81), the pull gauge guide rail (82), and the pull gauge adjusting rod (83) are equipped with two side plates (85), and a front panel is provided between the two side plates (85). (86), rear panel (87), pull gauge motor (88), reducer (881), the output end of the reducer (881) passes through the front panel (86) and the end is provided with a pull gauge swing arm (882), the top of the front panel (86) and the rear panel (87) is provided with a pull gauge bridge plate (89), the pull gauge bridge plate (89) is provided with a movable groove (891) along the swing direction of the pull gauge swing arm (882), the movable groove (891) is provided with a gas nozzle slider (892) sliding in the movable groove (891), the bottom of the gas nozzle slider (892) is provided with a gas nozzle connecting arm (893), the gas nozzle connecting arm (893) is provided with a rotating shaft (894), the rotating shaft (894) is provided with a rotating shaft (895) 94) A gauge bearing (895) is riveted to the position corresponding to the gauge swing arm (882). The top of the gauge swing arm (882) is provided with a swing arm groove (883) that fits onto the outside of the gauge bearing (895). The air nozzle slider (892) is provided with an air cavity (896). The side wall of the air nozzle slider (892) is provided with a connecting hole (897) that connects to the air cavity (896). A gauge plate (898) is embedded on the upper side of the air cavity (896) of the air nozzle slider (892). Air holes (899) are evenly provided on the gauge plate (898). Several air nozzles for the sliding of the air nozzle slider (892) are provided between the two side plates (85). The slide rail (851) has an upper pressure plate (852) on the side plate (85) corresponding to the movable groove (891) on the upper side of the guide rail (89). The upper pressure plate (852) has an inclined guide plate (853) on the side of the paper entry direction. The upper pressure plate (852) has a number of steel ball holes (854) evenly opened at the guide plate (898) of the air nozzle slider (892). The steel ball holes (854) are filled with glass beads (855). The side plate (85) has a steel ball seat (856) on the upper side of the upper pressure plate (852). The steel ball seat (856) is provided with a limiting groove (857) corresponding to the glass beads (855).

9. The screen printing machine according to claim 1, characterized in that: The scraper device (5) includes a scraper fixing seat (51), with scraper swing arm seats (52) on both sides of the scraper fixing seat (51). One end of the scraper swing arm seat (52) is rotatably connected to the main frame (1). A scraper adjusting cylinder (521) is provided between the middle section of the scraper swing arm seat (52) and the main frame (1). Horizontal adjusting nuts (511) are fixedly connected to the scraper swing arm seats (52) on both sides of the scraper fixing seat (51). A horizontal adjusting rod (512) is screwed onto the scraper fixing seat (51) and connected to the horizontal adjusting nut (511). A scraper square shaft (55) is provided on the lower side of the scraper fixing seat (51) via a scraper guide rail (53) and a scraper screw (54). Angle adjustment seats (56) are provided at both ends of the scraper square shaft (55). An upper scraper (57) is provided on the lower side of the two angle adjustment seats (56). A scraper rubber sheet (571) is provided at the lower end of the upper scraper (57). A rubber baffle (58) is provided on the lower side of the scraper fixing seat (51) on the side of the upper scraper (57) facing the input device (2) through a rubber baffle cylinder (581). A rubber baffle rotating shaft (591) and a rubber baffle motor (592) for driving the rubber baffle rotating shaft (591) to rotate are provided on the side of the scraper fixing seat (51) facing the output device (4). A rubber baffle swing arm (593) is provided at both ends of the rubber baffle rotating shaft (591). A rubber baffle groove (59) is hinged between the two rubber baffle swing arms (593).

10. The screen printing machine according to claim 1, characterized in that: The output device (4) includes a rear suction plate (41) hinged to the main frame (1). An output regulating cylinder (42) is also provided between the rear suction plate (41) and the main frame (1). An output conveyor belt (43) is provided on the rear suction plate (41). An output bridge plate (44) is provided on the side of the rear suction plate (41) near the printing roller (3). Several rear adhesive strips (45) are arranged side by side on the side of the output bridge plate (44) facing the printing roller (3). A paper feeding wheel shaft (46) is provided on the upper side of the side of the rear suction plate (41) near the printing roller (3). A rear conveyor wheel (48) is rotatably provided on the paper feeding wheel shaft (46) through a rear feed wheel frame (47).

Images