A fully automatic high-speed two-color screen printing machine

Abstract

The present invention relates to the field of spring festival couplet processing, and in particular to a fully automatic high-speed screen printing two-color printing machine. The present invention provides the following technical scheme: a fully automatic high-speed screen printing two-color printing machine, comprising a loading rack, a first loading transfer rack, a first color printing section, a second loading transfer rack, a second color printing section, a receiving transfer rack and a receiving rack, the first color printing section and the second color printing section both comprising a color standard rack, a screen printing table, a flocking machine or a powdering machine, a beating machine and a double-layer compound oven, a traction suction plate is provided between the flocking machine or the powdering machine and the screen printing table, the loading rack is provided with an air shaft for placing a raw material paper tube and a first tensioning roller, a magnetic powder brake is installed on the air shaft, and the first loading transfer rack, the second loading transfer rack and the receiving transfer rack have the same structure. The present invention can print spring festival couplets of two colors at one time, thereby improving processing efficiency.

Description

Technical Field

[0001] The invention relates to the field of spring festival couplet processing, in particular to a full-automatic high-speed silk screen printing two-color printing machine. Background Art

[0002] Spring Festival couplets, also known as "door couplets" and "couplets", are a unique literary form in China. They use neat, concise and exquisite words to depict beautiful images and express good wishes. Pasting Spring Festival couplets is a traditional custom of the Chinese nation. Every Spring Festival, whether in cities or rural areas, every household will choose spring couplets with beautiful meanings to paste on the door to bid farewell to the old and welcome the new, adding to the festive atmosphere. In the past, spring couplets were generally written in black on red paper, and the brush calligraphy was written on the cut red paper. With the improvement of living standards, the styles of couplets have become more diverse. At present, the more common styles of spring couplets on the market are fluff spring couplets and laser powder spring couplets. Among them, when processing fluff spring couplets, take an appropriate amount of adhesive, pour it on one end of the printing plate, scrape it back and forth, and each time you scrape to one side, you complete a printing, and then sprinkle fluff for flocking; and replace the flocking in the above steps with powdering, that is, sprinkle laser powder, you can get laser powder spring couplets.

[0003] However, the spring festival couplet printing equipment currently on the market only supports monochrome printing. Spring festival couplets in multiple colors must be printed one color at a time, and multiple monochrome printings need to be repeated for color registration, resulting in low processing efficiency. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a fully automatic high-speed silk screen two-color printing machine, which can print spring festival couplets that need to be printed in two colors at one time, avoid repeated color registration, and improve processing efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully automatic high-speed screen printing two-color printing machine, comprising a loading rack, a first loading transfer rack, a first color printing section, a second loading transfer rack, a second color printing section, a receiving transfer rack and a receiving rack, the first color printing section and the second color printing section both comprise a color mark rack, a screen printing table, a flocking machine or a powder spreading machine, a beating machine and a double-layer compound oven, a traction suction plate is provided between the flocking machine or the powder spreading machine and the screen printing table, the loading rack is provided with an air shaft for placing a raw material paper tube and a first tensioning roller, a magnetic powder brake is installed on the air shaft, the first loading transfer rack, the second loading transfer rack and the receiving transfer rack have the same structure, There are traction archways at both ends, and a number of first guide rollers arranged in parallel are arranged between the two traction archways. The color mark frame is provided with a color mark that can detect whether the Spring Festival couplets pass or not. A liftable printing platform, a printing plate and a printing head are provided on the screen printing table. The printing plate is arranged on the printing platform and fixed by a positioning device. A printing bracket for installing the printing head is provided on the printing platform. The printing bracket includes two relatively arranged mounting seats and cross beams respectively connected to the two mounting seats. The printing head can be movably installed on the cross beam along the length direction of the cross beam. The two mounting seats are respectively provided with synchronous wheels and synchronous belts matched therewith. One of the synchronous wheels is connected to a transmission motor for rotating it, and a connecting piece connected to the synchronous belt is provided on the printing head.

[0006] By adopting the above technical scheme, the spring festival couplet paper can be pulled out from the paper tube through the feeding rack, and then the spring festival couplet paper is stretched out through the first feeding transfer rack, so that the spring festival couplet paper passes through the first color printing part and the second color printing part respectively so that two colors are printed on the spring festival couplet paper, and finally the printed spring festival couplet can leave through the receiving rack, thereby realizing the automation of spring festival couplet processing, so that the spring festival couplets that need to be printed in two colors can be printed at one time, avoiding repeated color registration for many times, and improving processing efficiency. The color printing department detects the passage of the spring couplet paper through the color mark on the color mark frame. The screen printing station uses the printing head to scrape back and forth on the printing plate, brush glue on the spring couplet paper, and then sprinkle laser powder on it through a powder spreading machine, or sprinkle fluff on it through a flocking machine. The laser powder or fluff will be adhered to the spring couplet paper by the brushed glue. The laser powder or fluff will be firmly adhered by a beating machine through continuous beating, and then the glue will be dried in a double-layer compound oven. Among them, the loading rack fixes the paper tube of the spring couplet paper through an inflatable shaft, and through a magnetic powder The brake rotates the inflatable shaft, and cooperates with the traction arch to continuously guide the spring festival couplet paper wound on the paper drum into the first feeding transfer rack, thereby reducing the traction force of the traction arch on the spring festival couplet paper and preventing the spring festival couplet paper from being unable to withstand and breaking; the setting of the first guide roller can tension the incoming spring festival couplet paper, on the one hand, so that the spring festival couplet paper can be stretched out, and on the other hand, the tension force can be used to prevent the spring festival couplet paper from slipping between the first feeding transfer rack or the second feeding transfer rack; the screen printing table drives the synchronous belt to move through the forward and reverse rotation of the transmission motor, so that the printing head connected to the synchronous belt moves back and forth along the crossbeam that cooperates with it movably, scrapes back and forth on the printing plate, and prints glue on the spring festival couplet paper below through the printing plate, and the printing plate is fixed on the printing platform by a positioning device, and the printing platform is lifted and lowered so that the printing plate can be lifted and lowered accordingly. When the spring festival couplet paper is transmitted to the position of the screen printing part, the printing platform descends, so that the printing plate and the spring festival couplet paper are in contact, and printing is performed. After printing is completed, the printing platform rises, so that the printing plate leaves the spring festival couplet paper, and the spring festival couplet paper leaves.

[0007] Furthermore, a correction mechanism is provided at the loading rack, and the correction mechanism includes a movable seat, a correction motor and a correction plate. The correction motor is fixedly arranged at the loading rack, and its motor shaft is connected to the correction plate. The correction plate is arranged on the movable seat. The loading rack is provided with a guide rail corresponding to the movable seat, and the movable seat is provided with a sliding block that can move on the guide rail. The movable seat is provided with a hydraulic lifting member, one side of the hydraulic lifting member is hingedly mounted on the correction plate, and the other side is used to install the inflatable shaft, and a hydraulic cylinder is fixedly connected between the two, and the piston of the hydraulic cylinder is connected to the movable seat.

[0008] By adopting the above technical solution, the motor shaft of the correction motor pushes the correction plate, so that the movable seat moves along the guide rail relative to the feeding rack, and the inflatable shaft arranged thereon moves accordingly, thereby moving the position of the inflatable shaft along its axial direction, changing the position of the raw material paper tube, and adjusting the position of the spring festival couplet paper entering the first feeding transfer rack, and the hydraulic cylinder can push the hydraulic lifting member through the piston to lift it, thereby adjusting the height of the inflatable shaft.

[0009] Furthermore, the positioning device includes a positioning mounting part and a positioning connecting part installed on the printing platform, the positioning mounting part is provided with a positioning mounting cylinder, the piston of the positioning mounting cylinder is connected to the positioning connecting part, the positioning connecting part is in a "]" shape, and a plurality of matching threaded through holes and a positioning knob are provided at corresponding recessed positions on the top, the positioning knob is provided with threads matching the threaded through holes, and a resistance block is provided at the bottom of the recess extending into the positioning connecting part.

[0010] By adopting the above technical scheme, the piston of the positioning mounting cylinder can be extended and retracted to drive the positioning connecting part to rise and fall relative to the positioning mounting part. After the positioning part is lowered, the printing plate is separated from the printing head. Then, by adjusting the positioning knob, the interference block is separated from the printing plate, the interference with the printing plate is released, and the printing plate is unfixed, so that the original printing plate can be removed for cleaning or replaced with a new one. The two ends of the new printing plate can be inserted into the recessed parts of the positioning connecting part, and then the positioning knob is turned to make the interference block interfere with the printing plate, so that the printing plate is fixed on the positioning connecting part. Then, the positioning connecting part is raised by the positioning mounting cylinder to make the printing plate contact with the printing head.

[0011] Furthermore, the material receiving rack includes a color mark rack and a cutting machine, a second tensioning roller and a traction device are provided on the side of the cutting machine corresponding to the color mark rack, the traction device includes a matching traction guide roller, auxiliary rollers corresponding to the traction guide rollers respectively, and a tensioning rope spirally wound on the traction guide roller and the auxiliary roller, a plurality of parallel annular grooves are provided on the surface of the traction guide roller corresponding to the tensioning rope, a cutting knife is provided on the other side of the cutting machine relative to the traction device, a first adjustment device with adjustable gap is provided at both axial ends of the traction guide roller respectively, the first adjustment device includes a fixed part and a movable part, the fixed part and the movable part are rotatably connected to the two traction guide rollers respectively, an adjusting screw is provided on the other end of the movable part relative to the fixed part, a threaded hole is provided on the movable part corresponding to the adjusting screw, an adjusting knob fixedly connected to the adjusting screw is provided on the material receiving rack, and the adjusting knob is rotatably arranged with the material receiving rack.

[0012] By adopting the above technical scheme, whether the spring festival couplets pass is detected by the color code frame, and then the spring festival couplets are pulled to the cutting machine through the second tensioning roller and the traction device in sequence, and the spring festival couplets are cut with a cutter, wherein the traction device realizes the traction and positioning of the spring festival couplets through the traction guide roller and the tensioning rope wrapped around the traction guide roller, wherein the first adjustment device rotates the adjustment knob to screw the adjustment screw to move it relative to the threaded hole, and since the adjustment knob is rotatably set on the material receiving rack, the rotation of the adjustment knob will cause the movable part to move up and down, thereby controlling the distance between the movable part and the fixed part, and adjusting the distance between the traction guide rollers.

[0013] Furthermore, the first loading transfer rack and the receiving transfer rack are both provided with a storage swing arm, the storage swing arm is provided with a second guide roller cooperating with the first guide roller, and one end of the storage swing arm is hingedly arranged on the first loading transfer rack and the receiving transfer rack, and the storage swing arm is also provided with a push-pull cylinder, one end of the push-pull cylinder is arranged on the storage swing arm, and the other end is connected to the first loading transfer rack and the receiving transfer rack.

[0014] By adopting the above technical scheme, the second guide roller on the storage swing arm cooperates with the first guide roller, so that the tensioning effect of the first loading transfer rack and the receiving transfer rack is better, and under the action of the push-pull cylinder, the position of the storage swing arm can be adjusted, that is, the distance between the second guide roller and the first guide roller can be adjusted, thereby changing the tensioning force on the spring festival couplets.

[0015] Furthermore, both the second loading transfer rack and the receiving transfer rack are provided with an automatic deviation correction device, which includes a deviation correction roller, a mounting shaft seat for mounting the deviation correction roller, and an adjusting cylinder arranged on the mounting shaft seat and connected to both ends of the deviation correction roller.

[0016] By adopting the above technical scheme, such a setting can control the height of the two ends of the correction roller by adjusting the cylinder, so that the correction roller is tilted, and the position of the spring festival couplets pulled by it is changed, thereby achieving the purpose of correction, and correcting the spring festival couplets that have been displaced after passing through the double-layer compound oven to the appropriate position.

[0017] Furthermore, the traction arch includes a pair of guide rollers parallel to each other and a servo motor that drives one of the guide rollers to rotate. A pulley is provided at one end of the guide roller and is synchronously connected to the motor shaft of the servo motor through a belt. A second adjustment device for controlling the gap between the guide rollers is provided on the traction arch.

[0018] By adopting the above technical solution, the pulley and the motor shaft are linked through a belt, so that the rotation of the servo motor drives the pulley to rotate, thereby rotating the guide roller, thereby guiding the movement of the spring festival paper couplets. The gap between the guide rollers is adjusted by the second adjustment device, so that the guide rollers can be used for spring festival paper couplets of different thicknesses.

[0019] Furthermore, the double-layer compound oven includes an upper box body and a lower box body, and the upper box body and the lower box body are connected by an electric push rod.

[0020] By adopting the above technical solution, the double-layer compound oven is configured to have two drying spaces, an upper box and a lower box, which can improve the drying efficiency, and the upper box and the lower box can be opened and closed by pushing and pulling the electric push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of a double-layer compound oven.

[0023] Figure 3 This is a structural diagram of the traction arch.

[0024] Figure 4 It is a structural schematic diagram of the automatic deviation correction device. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] like Figure 1-4The fully automatic high-speed screen printing two-color printing machine shown in the figure comprises a feeding rack 1, a first feeding intermediate rack 2, a first color printing section, a second feeding intermediate rack 3, a second color printing section, a receiving intermediate rack 4 and a receiving rack 5 which are arranged in sequence, the first color printing section and the second color printing section both comprise a color mark rack 6, a screen printing table 7, a flocking machine 8 or a powdering machine 9, a beating machine 10 and a double-layer compound oven 11 which are arranged in sequence, a traction suction plate 12 is arranged between the flocking machine 8 or the powdering machine 9 and the screen printing table 7, the feeding rack 1 is provided with an air shaft 13 for placing a raw paper tube and a first tensioning roller 14, a magnetic powder brake 15 is installed on the air shaft 13, the first feeding intermediate rack 2, the second feeding intermediate rack 3 and the receiving intermediate rack 4 have the same structure, and traction archways 16 are arranged at both ends, and the two traction archways 1 6, a plurality of first guide rollers 17 are arranged in parallel, the color mark frame 6 is provided with a color mark 18 that can detect whether the spring festival couplets pass or not, and a liftable printing platform 22, a printing plate 23 and a printing head 24 are provided on the screen printing table 7. The printing plate 23 is arranged on the printing platform 22 and fixed by a positioning device 25. A printing bracket 26 for mounting the printing head 24 is provided on the printing platform 22, and the printing bracket 26 includes two relatively arranged mounting seats 27 and beams 28 respectively connected to the two mounting seats 27. The printing head 24 can be movably mounted on the beam 28 along the length direction of the beam 28, and the two mounting seats 27 are respectively provided with synchronous wheels and synchronous belts 29 matched therewith, one of the synchronous wheels is connected to a transmission motor 30 for rotating it, and a connecting piece 31 connected to the synchronous belt 29 is provided on the printing head 24.In this way, the spring festival couplet paper can be pulled out from the paper tube through the feeding rack 1, and then stretched out through the first feeding transfer rack 2, so that the spring festival couplet paper passes through the first color printing part and the second color printing part respectively so that two colors are printed on the spring festival couplet paper, and finally the printed spring festival couplet can leave through the receiving rack 5, realizing the automation of spring festival couplet processing, so that the spring festival couplets that need to be printed in two colors can be printed at one time, avoiding repeated color registration for many times, and improving processing efficiency, wherein the first color printing part and the second color printing part detect the spring festival couplet paper through the color mark on the color mark rack 6 The screen printing station 7 scrapes back and forth on the printing plate 23 through the printing head 24, brushes glue on the spring couplet paper, and then sprinkles laser powder on it through the powder spreading machine 9, or sprinkles fluff on it through the flocking machine 8. The laser powder or fluff will be adhered to the spring couplet paper by the brushed glue, and the laser powder or fluff will be firmly adhered by the beating machine 10 by continuously beating, and then the glue is dried with a double-layer compound oven 11; wherein, the feeding rack 1 fixes the paper tube of the spring couplet paper through the air shaft 13, and the air shaft 13 is rotated by the magnetic powder brake 15, and cooperates with the traction The archway 16 allows the spring couplet paper wound on the paper roll to be continuously introduced into the first feeding intermediate transfer rack 2, reducing the traction force of the traction archway 16 on the spring couplet paper, and preventing the spring couplet paper from being unable to withstand and breaking; the first guide roller 17 is set to tension the incoming spring couplet paper, on the one hand, to stretch the spring couplet paper, and on the other hand, to prevent the spring couplet paper from slipping with the first feeding intermediate transfer rack 2 or the second feeding intermediate transfer rack 3 through the tensioning force; the screen printing table 7 drives the synchronous belt 29 to move through the forward and reverse rotation of the transmission motor 30, so that the synchronous belt 29 is in contact with the synchronous belt 29. The connected printing head 24 moves back and forth along the crossbeam 28 that is movably matched with it, scrapes back and forth on the printing plate 23, and prints the glue on the spring festival couplet paper below through the printing plate 23. The printing plate 23 is fixed on the printing platform 22 through the positioning device 25. The printing platform 22 is set to rise and fall so that the printing plate 23 can be raised and lowered accordingly. When the spring festival couplet paper is conveyed to the screen printing position, the printing platform 22 descends, so that the printing plate 23 contacts the spring festival couplet paper, and printing is carried out. After printing is completed, the printing platform 22 rises, so that the printing plate 23 leaves the spring festival couplet paper, and the spring festival couplet paper leaves.

[0027] The color mark 18 is a color mark sensor.

[0028] The traction suction plate 12 is a conveyor belt with many small holes on its surface, which can generate a certain adsorption force on the spring festival couplet paper in contact with it, thereby preventing the spring festival couplet paper from slipping.

[0029] The traction suction disc 12 can also be configured as a traction suction roller, that is, a roller with numerous small holes on its surface.

[0030] The powder spreading machine 9, flocking machine 8 and beating machine 10 are all devices known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional methods.

[0031] The first color printing unit and the second color printing unit can both be provided with a powder sprinkler 9, but the colors of the laser powders sprinkled are different; or both can be provided with a flocking machine 8, and the colors of the flocks are different; or one can be provided with a powder sprinkler 9 and the other can be provided with a flocking machine 8, such as Figure 1 shown.

[0032] The present invention is provided with a control panel 68, which can control the switch of the power supply, the feeding of the loading rack 1 (that is, the rotation of the air shaft 13) and the traction of the traction arch 16 to the spring festival couplet paper.

[0033] The loading rack 1 is provided with a correction mechanism, which includes a movable seat 32, a correction motor 33 and a correction plate 34. The correction motor 33 is fixedly arranged on the loading rack 1, and its motor shaft is connected to the correction plate 34. The correction plate 34 is arranged on the movable seat 32. The loading rack 1 is provided with a guide rail 35 corresponding to the movable seat 32. The movable seat 32 is provided with a slider 36 that can move on the guide rail 35. The movable seat 32 is provided with a hydraulic lifting member 37. One side of the hydraulic lifting member 37 is hingedly mounted on the correction plate 34, and the other side is used to install the inflatable shaft 13, and a hydraulic cylinder 38 is fixedly connected between the two, and the piston of the hydraulic cylinder 38 is connected to the movable seat 32. By pushing the correcting plate 34 with the motor shaft of the correcting motor 33, the movable seat 32 moves along the guide rail 35 relative to the loading rack 1, so that the inflatable shaft 13 arranged thereon moves accordingly, thereby moving the position of the inflatable shaft 13 along its axial direction, changing the position of the raw material paper tube, and adjusting the position of the spring festival couplet paper entering the first loading transfer rack 2, and the hydraulic cylinder 38 can push the hydraulic lifting member 37 through the piston to lift it, thereby adjusting the height of the inflatable shaft 13.

[0034] The deviation correction motor 33 is a linear motor.

[0035] The positioning device 25 includes a positioning mounting member 39 and a positioning connecting member 40 installed on the printing platform 22. The positioning mounting member 39 is provided with a positioning mounting cylinder 41. The piston of the positioning mounting cylinder 41 is connected to the positioning connecting member 40. The positioning connecting member 40 is in a "]" shape, and a plurality of matching threaded through holes and a positioning knob 42 are provided at corresponding recessed positions on the upper side. The positioning knob 42 is provided with threads matching the threaded through holes, and a resistance block 43 is provided at the bottom of the recess extending into the positioning connecting member 40. Such an arrangement can drive the positioning connector 40 to rise and fall relative to the positioning connector 39 by extending and retracting the piston of the positioning mounting cylinder 41. After the positioning connector is lowered, the printing plate 23 is separated from the printing head 24. Then, by adjusting the positioning knob 42, the abutment block 43 is separated from the printing plate 23, the abutment with the printing plate 23 is released, and the printing plate 23 loses its fixation, so that the original printing plate 23 can be removed for cleaning or replaced with a new printing plate 23. The two ends of the new printing plate 23 can be inserted into the recessed parts of the positioning connector 40. Then, the positioning knob 42 is screwed to make the abutment block 43 abut against the printing plate 23, so that the printing plate 23 is fixed on the positioning connector 40. Then, the positioning connector 40 is raised by the positioning mounting cylinder 41, so that the printing plate 23 contacts the printing head 24.

[0036] The positioning devices 25 are respectively provided at the two ends of the corresponding printing plate 23, and are arranged in pairs.

[0037] The receiving rack 5 includes a color mark rack 6 and a cutter 19. The cutter 19 is provided with a second tensioning roller 20 and a traction device on one side corresponding to the color mark rack 6. The traction device includes a matching traction guide roller 55, auxiliary rollers 56 corresponding to the traction guide roller 55, and a tensioning rope 57 spirally wound on the traction guide roller 55 and the auxiliary roller 56. The surface of the traction guide roller 55 is provided with a plurality of mutually parallel annular grooves 58 corresponding to the tensioning rope 57. The cutter 19 is provided with a cutter 21 on the other side of the traction device. The first adjusting devices 59 with adjustable gap are respectively provided at the two axial ends of the guide roller 55. The first adjusting device 59 includes a fixed part 60 and a movable part 61. The fixed part 60 and the movable part 61 are respectively rotatably connected to the two pulling guide rollers 55. The other end of the movable part 61 relative to the fixed part 60 is provided with an adjusting screw 62. The movable part 61 is provided with a threaded hole 63 corresponding to the adjusting screw 62. The material receiving rack 5 is provided with an adjusting knob 64 fixedly connected to the adjusting screw 62. The adjusting knob 64 is rotatably arranged with the material receiving rack 5. Whether the spring festival couplets pass is detected by the color mark frame 6, and then the spring festival couplets are pulled to the cutting machine 19 through the second tensioning roller 20 and the traction device in turn, and the spring festival couplets are cut by the cutter 21, wherein the traction device realizes the traction positioning of the spring festival couplets through the traction guide roller 55 and the tensioning rope 57 wound around the traction guide roller 55, wherein the first adjustment device 59 rotates the adjustment knob 64 to screw the adjustment screw 62 to move it relative to the threaded hole 63, and since the adjustment knob 64 is rotatably set on the material receiving rack 5, the rotation of the adjustment knob 64 will cause the movable part 61 to move up and down, thereby controlling the distance between the movable part 61 and the fixed part 60, and adjusting the distance between the traction guide rollers 55.

[0038] The first feeding intermediate rotating frame 4 and the receiving intermediate rotating frame 4 are both provided with a storage swing arm 44, and the storage swing arm 44 is provided with a second guide roller 45 that cooperates with the first guide roller 17, and one end of the storage swing arm 44 is hingedly arranged on the first feeding intermediate rotating frame 4 and the receiving intermediate rotating frame 4, and the storage swing arm 44 is also provided with a push-pull cylinder 46, one end of the push-pull cylinder 46 is arranged on the storage swing arm 44, and the other end is connected to the first feeding intermediate rotating frame 4 and the receiving intermediate rotating frame 4. Such a setting makes the tensioning effect of the first feeding intermediate rotating frame 4 and the receiving intermediate rotating frame 4 better through the cooperation of the second guide roller 45 on the storage swing arm 44 and the first guide roller 17, and under the action of the push-pull cylinder 46, the position of the storage swing arm 44 can be adjusted, that is, the distance between the second guide roller 45 and the first guide roller 17 can be adjusted to change the tensioning force on the spring festival couplets.

[0039] The second feeding intermediate rotating frame 3 and the receiving intermediate rotating frame 4 are both provided with an automatic deviation correcting device, which includes a deviation correcting roller 47, a mounting shaft seat 48 for mounting the deviation correcting roller 47, and an adjusting cylinder 49 provided on the mounting shaft seat 48 and connected to both ends of the deviation correcting roller 47. This arrangement can control the height of both ends of the deviation correcting roller 47 by adjusting the cylinder 49, so that the deviation correcting roller 47 tilts, driving the position of the spring festival couplets pulled by it to change, thereby achieving the purpose of deviation correction, and correcting the spring festival couplets displaced after passing through the double-layer compound oven 11 to a suitable position.

[0040] The traction arch 16 includes a pair of guide rollers 50 parallel to each other and a servo motor 51 driving one of the guide rollers 50 to rotate. A pulley 52 is provided at one end of the guide roller 50, which is synchronously connected to the motor shaft of the servo motor 51 through a belt 53. A second adjustment device 54 for controlling the gap between the guide rollers 50 is provided on the traction arch 16. In this way, the pulley 52 is linked to the motor shaft through the belt 53, so that the rotation of the servo motor 51 drives the pulley 52 to rotate, thereby rotating the guide roller 50, which plays a role in guiding the movement of the spring festival paper couplets, and the gap between the guide rollers 50 is adjusted by the second adjustment device 54, so that the guide rollers 50 can be used for spring festival paper couplets of different thicknesses.

[0041] The structure of the second adjusting device 54 is the same as that of the first adjusting device 59 .

[0042] The double-layer compound drying oven 11 includes an upper box 65 and a lower box 66, and the upper box 65 and the lower box 66 are connected by an electric push rod 67. This arrangement enables the double-layer compound drying oven 11 to have two drying spaces, the upper box 65 and the lower box 66, which can improve the drying efficiency, and the upper box 65 and the lower box 66 can be opened and closed by pushing and pulling the electric push rod 67.

Claims

1. A fully automatic high-speed two-color screen printing machine, characterized by: It includes a loading rack, a first loading transfer rack, a first color printing unit, a second loading transfer rack, a second color printing unit, a receiving transfer rack and a receiving rack, which are arranged in sequence. The first color printing unit and the second color printing unit both include a color mark rack, a screen printing table, a flocking machine or a powder spreading machine, a beating machine and a double-layer compound oven, which are arranged in sequence. A traction suction plate is arranged between the flocking machine or the powder spreading machine and the screen printing table. The loading rack is provided with an air shaft for placing a raw paper tube and a first tensioning roller. A magnetic powder brake is installed on the air shaft. The first loading transfer rack, the second loading transfer rack and the receiving transfer rack have the same structure. A traction archway is arranged at both ends, and a plurality of first guide rollers arranged in parallel are arranged between the two corresponding traction archways. The color mark rack A color mark is provided on the screen printing table for detecting whether the Spring Festival couplets have passed or not. A liftable printing platform, a printing plate and a printing head are provided on the screen printing table. The printing plate is arranged on the printing platform and fixed by a positioning device. A printing bracket for installing the printing head is provided on the printing platform. The printing bracket includes two mounting seats arranged opposite to each other and cross beams respectively connected to the two mounting seats. The printing head can be movably installed on the cross beam along the length direction of the cross beam. The two mounting seats are respectively provided with synchronous wheels and synchronous belts matched therewith, one of the synchronous wheels is connected to a transmission motor for rotating it, a connector connected to the synchronous belt is provided on the printing head, a correction mechanism is provided at the loading rack, and the correction mechanism includes a movable seat, a correction motor and a correction plate, and the correction motor is fixedly arranged At the loading rack, its motor shaft is connected with the correction plate, and the correction plate is arranged on a movable seat. The loading rack is provided with a guide rail corresponding to the movable seat, and a slider which can move on the guide rail is provided on the movable seat. A hydraulic lifting member is provided on the movable seat, and one side of the hydraulic lifting member is hingedly mounted on the correction plate, and the other side is used to install the air shaft, and a hydraulic cylinder is fixedly connected between the two, and the piston of the hydraulic cylinder is connected to the movable seat. The material receiving rack includes a color mark rack and a cutting machine. A second tensioning roller and a traction device are provided on the side of the cutting machine corresponding to the color mark rack. The traction device includes a matching traction guide roller, auxiliary rollers corresponding to the traction guide rollers respectively, and a tensioning rope spirally wound on the traction guide roller and the auxiliary roller. The surface of the traction guide roller corresponds to the tensioning rope. The rope is provided with a plurality of annular grooves parallel to each other, a cutting knife is provided on the other side of the cutting machine relative to the traction device, first adjustment devices with adjustable gap are provided at the two axial ends of the traction guide roller, the first adjustment device comprises a fixed part and a movable part, the fixed part and the movable part are rotatably connected with the two traction guide rollers respectively, an adjustment screw is provided at the other end of the movable part relative to the fixed part, a threaded hole is provided in the movable part corresponding to the adjustment screw, an adjustment knob fixedly connected with the adjustment screw is provided on the material receiving rack, the adjustment knob is rotatably arranged with the material receiving rack, the traction arch comprises a pair of guide rollers parallel to each other and a servo motor driving one of the guide rollers to rotate, a pulley is provided at one end of the guide roller, and the pulley is synchronously connected with the motor shaft of the servo motor through a belt,The traction arch is provided with a second adjustment device for controlling the gap between the guide rollers.

2. The fully automatic high-speed two-color screen printing machine according to claim 1, characterized in that: The positioning device includes a positioning mounting piece and a positioning connecting piece installed on the printing platform. The positioning mounting piece is provided with a positioning mounting cylinder. The piston of the positioning mounting cylinder is connected to the positioning connecting piece. The positioning connecting piece is in a "]" shape, and a plurality of matching threaded through holes and a positioning knob are provided at corresponding recessed positions on the top. The positioning knob is provided with threads matching the threaded through holes, and a resistance block is provided at the bottom of the recessed part extending into the positioning connecting piece.

3. The fully automatic high-speed two-color screen printing machine according to claim 1, characterized in that: The first loading transfer rack and the receiving transfer rack are both provided with a storage swing arm, the storage swing arm is provided with a second guide roller cooperating with the first guide roller, and one end of the storage swing arm is hingedly arranged on the first loading transfer rack and the receiving transfer rack, and the storage swing arm is also provided with a push-pull cylinder, one end of the push-pull cylinder is arranged on the storage swing arm, and the other end is connected to the first loading transfer rack and the receiving transfer rack.

4. The fully automatic high-speed two-color screen printing machine according to claim 1, characterized in that: The first feeding transfer frame and the receiving transfer frame are both provided with automatic deviation correction devices, which include deviation correction rollers, mounting shaft seats for mounting the deviation correction rollers, and adjustment cylinders arranged on the mounting shaft seats and connected to both ends of the deviation correction rollers.

5. The fully automatic high-speed two-color screen printing machine according to claim 1, characterized in that: The double-layer compound oven comprises an upper box body and a lower box body, and the upper box body and the lower box body are connected by an electric push rod.

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