A paper printing and drying device

Abstract

The present invention provides a paper printing and drying device, which relates to a printing and drying device and includes at least two groups of replacement roller racks and a production rack for docking with the replacement roller racks. A winding roller, an unwinding roller, a tensioning roller, and a pressing roller are installed on the replacement roller racks. There are two groups of tensioning rollers, which are pushed by a jacking cylinder to slide between the replacement roller racks and the production rack. By concentrating the winding roller, unwinding roller, tensioning roller, and pressing roller on the replacement roller racks, while placing the printing machine and the dryer on the production rack, and adopting the form of alternating combination and disassembly of multiple groups of replacement roller racks and a group of production racks to achieve the replacement of the winding roller and the unwinding roller during the printing and drying process, thereby improving the coherence of batch processing, reducing the processing time consumed during the replacement process, and after the replacement roller racks are docked and combined with the production rack, the operation of automatically placing the paper under the printing machine and the dryer can also be completed, which is relatively time-saving and labor-saving.

Description

Technical Field

[0001] The present invention relates to a printing and drying device, in particular to a paper printing and drying device. Background Art

[0002] At present, with the continuous development of technology, the printing level of paper is also constantly improving. That is, by transferring specific patterns and texts to paper through ink, batch processing of patterns and texts can be achieved. As described in a patent for a printing machine for green printing with a fast drying function (publication number: CN112874150B), it adopts a batch printing and drying processing method for unwound paper. That is, it is equipped with a first dryer and a second dryer, and the first dryer and the second dryer are used to dry the paper body passing through the middle unwinding at the same time, so as to achieve a better drying effect on the paper body. However, for such a batch processing method of unwinding, when a roll of paper is unwound and a new roll needs to be replaced, it is still necessary for workers to pass the head section of the paper through the printing machine, dryer, and finally fix it on the winding roller in sequence. Moreover, when workers replace the old roll with a new roll, they also need to stop the machine. Therefore, it will consume processing time and affect the continuity of batch production. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a paper printing and drying device. By concentrating the winding roller, unwinding roller, tensioning roller, and squeezing roller on the replacement roller frame, while the printing machine and dryer are placed on the production frame, and adopting the form of alternating combination and disassembly of multiple groups of replacement roller frames and a group of production frames to complete the replacement of the winding roller and unwinding roller during the printing and drying process, thereby improving the continuity of batch processing, reducing the processing time consumed during the replacement process, and after the replacement roller frame and the production frame are docked and combined, the operation of automatically placing the paper under the printing machine and dryer can also be completed, which is relatively time-saving and labor-saving.

[0004] The present invention provides the following technical solutions:

[0005] A paper printing and drying device includes at least two sets of replacement roller racks and one production rack. The replacement roller racks are slidably connected to a horizontal bottom plate and are driven by a lead screw installed on the horizontal bottom plate to slide reciprocally and alternately until they are docked with the production rack. At this time, the lead screw is threadedly connected to the replacement roller rack. When the lead screw motor drives the lead screw to rotate, multiple sets of replacement roller racks can slide synchronously under the drive of the thread until one set of replacement roller racks is docked on the side of the production rack. The replacement roller rack is equipped with a rewinding roller, an unwinding roller, a tensioning roller, and a squeezing roller that are distributed in parallel. There are two tensioning rollers, and their two ends are respectively positioned in the sliders on both sides of the replacement roller rack through end shafts. And a pushing cylinder for driving the slider to move linearly is installed on the replacement roller rack. A chute one and a chute two for the slider to move linearly are opened on the side walls of the replacement roller rack and the production rack. When the replacement roller rack is docked with the production rack, the chute one and the chute two are docked to form a linear chute for the corresponding slider to move linearly. There are two squeezing rollers, and they are located between the unwinding roller and the tensioning roller. After the paper is unwound from the unwinding roller, it passes between the two squeezing rollers and then sequentially winds around the two tensioning rollers and is wound by the rewinding roller after being squeezed by the squeezing roller. During the operation of unwinding, printing, drying, and rewinding the paper on one set of replacement roller racks, the other sets of replacement roller racks can perform the disassembly of the paper after rewinding, the installation and winding of new rolls of paper. At the same time, since the rewinding roller, unwinding roller, tensioning roller, and squeezing roller are concentrated on the replacement roller rack, it and the production rack are two independent combined units installed in a combined manner, so as to facilitate the independent maintenance of the two in the later stage, and at the same time can also ensure that the overall meets the conditions for batch production. The overall production process has good coherence and can also greatly reduce the processing time consumed during production replacement;

[0006] A printing plate and a drying device are installed on the top of the production rack. The printing plate is located between the unwinding roller and the drying device and is driven to press down by a pressing cylinder. A receiving plate is also provided below it. One end of the receiving plate passes through the side wall of the production rack and is connected to a pulling cylinder. The pulling cylinder is installed outside the production rack and is used to drive the receiving plate to horizontally extend under the printing plate and cooperate with the printing plate to perform printing processing on the paper passing through it. At this time, when one set of replacement roller racks is docked with the production rack, the leading end of the paper that has been fixed on the rewinding roller can further extend the unwound paper under the horizontal movement and pulling of the two tensioning rollers. And after the two tensioning rollers drive the paper to slide onto the production rack, the bearing plate originally outside the production rack extends under the drive of the pulling cylinder under the printing plate and cooperates with the pressing printing plate to complete the printing of the paper on it. The drying device is used to dry the printed paper.

[0007] Preferably, in order to make marks for segmented punching on the paper after printing and drying, so as to perform equal segmented shearing subsequently, a set of segmented punching devices can be arranged and drivenly connected to the outside of the production rack through a lead screw. One end side wall of the production rack is penetrated by the segmented punching device and extends between two groups of tension rollers. It cooperates with the punching platform below the production rack to perform segmented punching on the dried paper passing between them.

[0008] Preferably, the segmented punching device includes a guide rail guidingly connected to one end side wall of the production rack, a punching knife mounting plate fixedly connected to the guide rail through a punching cylinder. A plurality of groups of linearly distributed punching knives are installed on the bottom side of the punching knife mounting plate. One end of the lead screw is drivingly connected to a driving motor outside the production rack, and the other end is threadedly connected into the guide rail, which is used to stably drive the guide rail to drive the punching knife to pass through the channel opened at one end of the production rack and cooperate with the punching platform to perform punching. And in order to ensure the stability of punching quality, two groups of pressing plates are distributed on both sides of the punching knife. The pressing plates and the punching knife are arranged along the paper traveling direction. When the punching knife cooperates with the punching groove on the punching platform to complete punching, the bottom sides of the two groups of pressing plates are pressed against the paper on both sides of the punching knife. A piston sleeve is arranged on the top side of the pressing plate, and a corresponding piston rod is slidably connected in the piston sleeve. The top end of the piston rod is fixed on the punching knife mounting plate. A pressing spring is also arranged between the piston sleeve and the punching knife mounting plate. At this time, when the punching cylinder drives the punching knife to press down for punching, after the two groups of pressing plates are pressed against the punching platform, the punching cylinder continues to press down for punching, then the piston sleeve on the pressing plate can press against the compression spring, and at the same time the piston rod extends deep into the piston sleeve. The pressing plate continuously presses the paper on the punching platform under the action of the pressing spring, so as to achieve the stability during punching.

[0009] Preferably, the drying device includes a drying box. A plurality of drying nozzles are opened on the bottom side of the drying box. A heating strengthening pipe is installed in the drying box, and one side of it is also connected to a hot air box through an air inlet pipe. When the air valve of the air inlet pipe is opened, the hot air in the hot air box enters the drying box through the air inlet pipe, and is sprayed out from the drying nozzles under the auxiliary heating and strengthening of the strengthening heating pipe in the drying box to blow and dry the paper located below.

[0010] Preferably, in order to enable the tensioning roller to have an elastic tensioning effect during both sliding and tensioning operations, a buffer notch can be provided on one side of the slider facing the end shaft. A buffer block is slidably connected in the buffer notch. The sliding direction of the buffer block is parallel to the driving direction of the pushing cylinder. Buffer springs for pressing between the side wall of the buffer notch and the buffer block are also provided on both sides thereof. The two buffer springs press the buffer block against the middle of the buffer notch, and the end shaft is rotatably connected in the buffer block. At this time, since a tensioning roller is rotatably connected between the two buffer blocks, and its two ends are abutted and slidably connected in the buffer notches of the buffer blocks, and the buffer springs on both sides of the two buffer blocks press the two buffer blocks to move synchronously along the buffer notch, so as to drive the tensioning roller to perform a flexible buffer movement along the direction of the buffer notch.

[0011] Preferably, in order to improve the stability of the structure installation on the production rack, the production rack can be provided to include a U-shaped inner rack and an n-shaped outer rack covering the outer rack. The replacement roller rack is U-shaped and docked with the inner rack, and the printing plate and the drying device are both installed on the top of the outer rack, and the pulling cylinder and the driving motor are both installed outside the outer rack.

[0012] Preferably, the two squeezing rollers are respectively a fixed roller and a movable roller. The movable roller is slidably connected in the replacement roller rack through a movable block, and is driven by a screw to move towards the fixed roller to clamp the paper passing through it. The movable block is in threaded cooperation with the screw, and a rotating motor for driving the screw to rotate is also provided on the replacement roller rack. Roller driving motors for driving the corresponding fixed roller and movable roller to rotate are also provided in the movable block and the replacement roller rack. When the two squeezing rollers clamp the paper and rotate, it can not only achieve the effect of squeezing the paper neatly, but also provide a pulling and unwinding force for the paper on the unwinding roller.

[0013] Preferably, in order to make the roll change operation more convenient, docking slots one can be provided at both ends of the roller shaft of the unwinding roller. A top cylinder one is installed on the replacement roller rack, and a transfer rod for being transferred into the docking slot one is provided at the end of the top cylinder one.

[0014] Preferably, in order to make the roll change operation more convenient, docking slots two can be provided at both ends of the roller shaft of the winding roller. Two rotating disks are installed on the replacement roller rack. A top cylinder two is fixed at the center of the rotating disk, and a cross-shaped docking block is fixed at the end of the top cylinder two. The docking block is inserted into the cross-shaped docking slot two for driving the winding roller to rotate and wind along the center of the winding roller under the drive of the rotating disk. When it is necessary to disassemble and assemble the winding roller again, it only needs to start the top cylinder two to make the docking block be withdrawn from the docking slot two.

[0015] The beneficial effects of the present invention are:

[0016] 1. In the present invention, the distribution mode of multiple groups of replacement roller racks and one production rack enables, during the processes of unwinding, printing, drying, and winding of the paper on one group of replacement roller racks, the disassembly of the wound paper, the installation and winding of new rolls of paper on other groups of replacement roller racks. At the same time, since the winding rollers, unwinding rollers, tensioning rollers, and squeezing rollers are concentrated on the replacement roller racks, and they and the production rack are two independent combined units installed in a combined manner, facilitating their independent maintenance in the later stage. Also, it can ensure that the overall meets the conditions for batch production, with a good coherence in the overall production process and significantly reducing the processing time consumed during production replacement;

[0017] 2. After one group of replacement roller racks is docked with the production rack, the paper with its first section already fixed on the winding roller can be further extended during unwinding under the horizontal pulling of two groups of tensioning rollers. After the two groups of tensioning rollers drive the paper to slide onto the production rack, the bearing plate originally outside the production rack extends under the drive of the pulling cylinder to the lower part of the printing plate and cooperates with the pressing printing plate to complete the printing of the paper thereon. In this way, the automated and coherent production operation after the docking of the two independent units of the replacement roller rack and the production rack can be completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 is the front - view structural sectional view when the replacement roller rack and the production rack in the present invention are docked and the tensioning rollers slide onto the production rack;

[0020] Figure 2 is the front - view structural sectional view when the replacement roller rack and the production rack in the present invention are docked;

[0021] Figure 3 is the side - view structural schematic diagram of the production rack;

[0022] Figure 4 is Figure 1 the structural sectional view along the A - A section in

[0023] Figure 5 is Figure 2 the structural sectional view along the B - B section in

[0024] Figure 6 is Figure 2 the structural sectional view along the C - C section in

[0025] Figure 7 is the top - view structural schematic diagram of the production rack and the replacement roller rack;

[0026] Figure 8 isFigure 4 Side view structure schematic diagram after the middle pushing cylinder and the slider are disassembled;

[0027] Figure 9 Schematic diagram of the structure of the punching knife;

[0028] Figure 10 Side view of the docking block;

[0029] Markings in the figure: 1 is the replacement roller frame, 2 is the production frame, 3 is the horizontal bottom plate, 4 is the lead screw, 5 is the winding roller, 6 is the unwinding roller, 7 is the tensioning roller, 8 is the squeezing roller, 10 is the drying device, 11 is the first chute, 21 is the second chute, 22 is the lead screw, 23 is the segmented punching device, 24 is the inner frame, 25 is the outer frame, 231 is the guide rail, 232 is the punching cylinder, 233 is the punching knife mounting plate, 234 is the punching knife, 235 is the driving motor, 236 is the punching platform, 237 is the pressing plate, 238 is the piston sleeve, 239 is the piston rod, 2310 is the pressing spring, 51 is the second docking slot, 52 is the rotating disk, 53 is the second top cylinder, 54 is the docking block, 61 is the first docking slot, 62 is the first top cylinder, 63 is the transfer rod, 71 is the end rotating shaft, 72 is the slider, 73 is the pushing cylinder, 721 is the buffer notch, 722 is the buffer block, 723 is the buffer spring, 81 is the fixed roller, 82 is the movable roller, 83 is the movable block, 84 is the screw, 85 is the rotating motor, 86 is the roller driving motor, 91 is the printing plate, 92 is the pulling cylinder, 93 is the receiving plate, 94 is the pressing cylinder. Detailed implementation method

[0030] Embodiment 1

[0031] As Figures 1-10As shown in the figure, a paper printing and drying device includes at least two sets of replacement roller racks 1 and one production rack 2 in this embodiment. The replacement roller racks 1 are slidably connected to the horizontal bottom plate 3 and are driven by a lead screw 4 installed on the horizontal bottom plate 3 to slide reciprocally and alternately to dock with the production rack 2. At this time, the lead screw 4 is threadedly connected to the replacement roller rack 1. When the motor of the lead screw 22 drives the lead screw 4 to rotate, multiple sets of replacement roller racks 1 can slide synchronously under the drive of the thread until a set of replacement roller racks 1 is docked on the side of the production rack 2. The replacement roller rack 1 is equipped with a winding roller 5, an unwinding roller 6, a tension roller 7, and a pressing roller 8 that are distributed in parallel. There are two sets of tension rollers 7, and both ends are respectively positioned in the sliders 72 on both sides of the replacement roller rack 1 through the end rotating shafts 71. And a pushing cylinder 73 for driving the slider 72 to move linearly is installed on the replacement roller rack 1. The side walls of the replacement roller rack 1 and the production rack 2 are provided with a first chute 11 and a second chute 21 for the slider 72 to move linearly. When the replacement roller rack 1 is docked with the production rack 2, the first chute 11 and the second chute 21 are docked to form a linear chute for the corresponding slider 72 to move linearly. There are two sets of pressing rollers 8, and they are located between the unwinding roller 6 and the tension roller 7. After the paper is unwound from the unwinding roller 6, it passes between the two sets of pressing rollers 8 and is wound by the winding roller 5 after passing through the two sets of tension rollers 7 in sequence after being pressed by the pressing rollers 8. During the operation process of unwinding, printing, drying, and winding the paper on one set of replacement roller racks 1, the other sets of replacement roller racks 1 can perform the disassembly of the wound paper, the installation and winding of the new roll of paper. At the same time, since the winding roller 5, the unwinding roller 6, the tension roller 7, and the pressing roller 8 are concentrated on the replacement roller rack 1, it and the production rack 2 are two independent combined units installed in a combined manner, so as to facilitate the independent maintenance of the two in the later stage, and at the same time, it can also ensure that the overall meets the conditions of batch production. The overall production process has good coherence and can also greatly reduce the processing time consumed during the production replacement process;

[0032] A printing plate 91 and a drying device 10 are installed on the top of the production rack 2. The printing plate 91 is located between the unwinding roller 6 and the drying device 10 and is driven to press down by a pressing cylinder 94. A receiving plate 93 is also provided below it. One end of the receiving plate 93 passes through the side wall of the production rack 2 and is connected to a pulling cylinder 92. The pulling cylinder 92 is installed outside the production rack 2 and is used to drive the receiving plate 93 to horizontally extend under the printing plate 91 and cooperate with the printing plate 91 to perform printing processing on the paper passing through it. At this time, when a set of replacement roller racks 1 is docked with the production rack 2, the leading end of the paper that has been fixed on the winding roller 5 can further extend the unwound paper under the horizontal movement and pulling of the two sets of tension rollers 7. And after the two sets of tension rollers 7 drive the paper to slide onto the production rack 2, the bearing plate originally outside the production rack 2 extends under the drive of the pulling cylinder 92 under the printing plate 91 and cooperates with the pressing printing plate 91 to complete the printing of the paper on it. The drying device 10 is used to dry the printed paper.

[0033] In order to make marks for segmented punching on the paper after printing and drying, so as to perform equal segmented shearing subsequently, a set of segmented punching devices 23 can be arranged outside the production rack 2 and are driven and connected by a lead screw 22. The segmented punching device 23 passes through one end side wall of the production rack 2 and extends between two sets of tension rollers 7, and is relatively matched with a punching platform 236 below the production rack 2 to perform segmented punching on the dried paper passing between them.

[0034] The segmented punching device 23 includes a guide rail 231 guidingly connected to one end side wall of the production rack 2, a punching knife mounting plate 233 fixedly connected to the guide rail 231 through a punching cylinder 232. A plurality of groups of linearly distributed punching knives 234 are installed on the bottom side of the punching knife mounting plate 233. One end of the lead screw 22 is drivingly connected to a driving motor 235 outside the production rack 2, and the other end is threadedly connected into the guide rail 231, and is used to stably drive the guide rail 231 to drive the punching knife 234 to pass through a channel opened at one end of the production rack 2 and be relatively matched with the punching platform 236 to perform punching. And in order to ensure the stability of the punching quality, two groups of pressing plates 237 are distributed on both sides of the punching knife 234. The pressing plates 237 and the punching knife 234 are arranged along the paper traveling direction. When the punching knife 234 cooperates with the punching slots on the punching platform 236 to complete punching, the bottom sides of the two groups of pressing plates 237 are pressed against the paper on both sides of the punching knife 234. A piston sleeve 238 is arranged on the top side of the pressing plate. A corresponding piston rod 239 is slidably connected in the piston sleeve 238. The top end of the piston rod 239 is fixed on the punching knife mounting plate 233. A pressing spring 2310 is also arranged between the piston sleeve 238 and the punching knife mounting plate 233. At this time, when the punching cylinder 232 drives the punching knife 234 to press down for punching, after the two groups of pressing plates 237 are pressed against the punching platform 236, the punching cylinder 232 continues to press down for punching, then the piston sleeve 238 on the pressing plate 237 can press against the compression spring, and at the same time the piston rod 239 extends deep into the piston sleeve 238. The pressing plates 237 continuously press the paper on the punching platform 236 under the action of the pressing spring 2310 to achieve the stability during punching.

[0035] In order to enable the tensioning roller 7 to have an elastic tensioning effect during both sliding and tensioning operations, a buffer notch 721 can be provided on one side of the slider 72 facing the end rotating shaft 71. A buffer block 722 is slidably connected in the buffer notch 721. The sliding direction of the buffer block 722 is parallel to the driving direction of the pushing cylinder 73. Buffer springs 723 for pressing between the side wall of the buffer notch 721 and the buffer block 722 are provided on both sides thereof. The two groups of buffer springs 723 press the buffer block 722 against the middle of the buffer notch 721, and the end rotating shaft 71 is rotatably connected in the buffer block 722. At this time, since a tensioning roller 7 is rotatably connected between the two buffer blocks 722, and its two ends are abutted and slidably connected in the buffer notch 721 of the buffer block 722, and the buffer springs 723 on both sides of the two buffer blocks 722 press the two buffer blocks 722 to move synchronously along the buffer notch 721, so as to drive the tensioning roller 7 to perform a flexible buffer movement along the direction of the buffer notch 721.

[0036] In order to improve the stability of the structure installation on the production rack 2, the production rack 2 can be provided to include a U-shaped inner rack 24 and an n-shaped outer rack 25 covering the outer rack 24. The replacement roller rack 1 is U-shaped and docked with the inner rack 24, and the printing plate 91 and the drying device 10 are both installed on the top of the outer rack 25. The pulling cylinder 92 and the driving motor 235 are both installed outside the outer rack 25.

[0037] The two groups of pressing rollers 8 are respectively a fixed roller 81 and a movable roller 82. The movable roller 82 is slidably connected in the replacement roller rack 1 through a movable block 83, and is driven by a screw 84 to move towards the fixed roller 81 to clamp the paper passing through it. The movable block 83 is in threaded cooperation with the screw 84, and a rotating motor 85 for driving the screw 84 to rotate is also provided on the replacement roller rack 1. A roller driving motor 86 for driving the corresponding fixed roller 81 and movable roller 82 to rotate is also provided in the movable block 83 and the replacement roller rack 1. When the two groups of pressing rollers 8 clamp the paper and rotate, it can not only achieve the effect of squeezing the paper neatly, but also provide a pulling and unwinding force for the paper on the unwinding roller 6.

[0038] In order to make the roll change operation more convenient, docking slots 61 can be provided at both ends of the roller shaft of the unwinding roller 6. A top cylinder 62 is installed on the replacement roller rack 1, and a transfer rod 63 for being transferred into the docking slot 61 is provided at the end of the top cylinder 62.

[0039] In order to make the roll changing operation more convenient, docking slots 51 are provided at both ends of the roller shaft of the winding roller 5, and two sets of rotating disks 52 are installed on the replacement roller frame 1. A top cylinder 53 is fixed at the center of the rotating disk 52, and a cross-shaped docking block 54 is fixed at the end of the top cylinder 53. The docking block 54 is inserted in the cross-shaped docking slot 51, and is used to drive the winding roller 5 to rotate and rewind along the center of the winding roller 5 under the drive of the rotating disk 52. When the winding roller 5 needs to be disassembled and reassembled, it is only necessary to start the top cylinder 53 to pull the docking block 54 out of the docking slot 51.

[0040] Example 2

[0041] like Figures 1-9 As shown, a paper printing drying device 10, in this embodiment, is further limited based on embodiment 1, and the drying device 10 includes a drying box, and a plurality of drying nozzles are opened on the bottom side of the drying box. A heating reinforcement pipe is installed in the drying box, and one side of the drying box is also connected to the hot air box through an air intake pipe. When the air valve of the air intake pipe is opened, the hot air in the hot air box enters the drying box through the air intake pipe, and is sprayed out from the drying nozzle under the auxiliary heating reinforcement of the enhanced heating pipe in the drying box, and jet drying is performed on the paper located below.

[0042] The working principle of the present invention is as follows: the distribution of multiple groups of replacement roller frames 1 and a group of production frames 2 in the present invention allows the replacement roller frames 1 of other groups to dismantle the reeled paper and install and wind the new roll of paper during the unwinding, printing, drying and rewinding operations on the paper on one group of replacement roller frames 1. At the same time, since the rewinding roller 5, unwinding roller 6, tensioning roller 7 and squeezing roller 8 are concentrated on the replacement roller frame 1, it and the production frame 2 are two independent combined units installed in a combined manner, so that the two can be maintained independently at a later stage, and at the same time, it can also ensure that the overall conditions for mass production are met, and the overall production process is coherent. The performance is good and the processing time consumed in the production replacement process can be greatly reduced; after a set of replacement roller frames 1 are docked with the production frame 2, the paper whose first section has been fixed on the winding roller 5 can be further extended under the horizontal movement and pulling of the two sets of tensioning rollers 7, and after the two sets of tensioning rollers 7 drive the paper to slide onto the production frame 2, the supporting plate originally outside the production frame 2 is extended to the bottom of the printing plate 91 under the drive of the pulling cylinder 92, and cooperates with the downward pressing printing plate 91 to complete the printing of the paper thereon, thereby completing the operation of automated continuous production after the two independent units of the replacement roller frame 1 and the production frame 2 are docked.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A paper printing and drying device, characterized in that, it includes at least two sets of replacement roller racks (1) and one set of production racks (2). The replacement roller racks (1) are slidably connected to the horizontal bottom plate (3) and are driven by a lead screw (4) installed on the horizontal bottom plate (3) to slide reciprocally and alternately until they are docked with the production rack (2). The lead screw (4) is threadedly connected inside the replacement roller rack (1). When the lead screw (4) is driven to rotate, multiple sets of replacement roller racks (1) can be synchronously slid under the drive of the thread until one set of replacement roller racks (1) is docked on the side of the production rack (2). A winding roller (5), an unwinding roller (6), a tension roller (7), and a squeezing roller (8) are installed on the replacement roller rack (1) in parallel distribution. There are two sets of tension rollers (7), and both ends thereof are respectively positioned in sliders (72) on both sides of the replacement roller rack (1) through end shafts (71). And a push cylinder (73) for driving the slider (72) to move linearly is installed on the replacement roller rack (1). Chutes one (11) and chutes two (21) for the slider (72) to move linearly are opened on the side walls of the replacement roller rack (1) and the production rack (2). When the replacement roller rack (1) is docked with the production rack (2), the chute one (11) and the chute two (21) are docked to form a linear chute for the corresponding slider (72) to move linearly. There are two sets of squeezing rollers (8), and they are located between the unwinding roller (6) and the tension roller (7). After the paper is unwound from the unwinding roller (6), it passes between the two sets of squeezing rollers (8) and is wound around the two sets of tension rollers (7) in sequence and then wound by the winding roller (5) after being squeezed by the squeezing roller (8). During the operation process of unwinding, printing, drying, and winding of the paper on one set of replacement roller racks (1), the other sets of replacement roller racks (1) can perform the disassembly of the wound paper, the installation and winding of new rolls of paper. At the same time, since the winding roller (5), the unwinding roller (6), the tension roller (7), and the squeezing roller (8) are concentrated on the replacement roller rack (1), and it and the production rack (2) are two independent combined units installed in a combined manner, it is convenient for their independent maintenance, and at the same time, it can also ensure that the whole meets the conditions of batch production. The overall production process has good coherence and reduces the processing time consumed during the production replacement process; A printing plate (91) and a drying device (10) are installed on the top of the production rack (2). The printing plate (91) is located between the unwinding roller (6) and the drying device (10) and is driven downward by a pressing cylinder (94). A receiving plate (93) is further arranged below it. One end of the receiving plate (93) passes through the side wall of the production rack (2) and is drivingly connected to a pulling cylinder (92). The pulling cylinder (92) is installed outside the production rack (2) and is used to drive the receiving plate (93) to horizontally extend under the printing plate (91) and cooperate with the printing plate (91) to perform printing treatment on the paper passing through it. After a set of replacement roller racks (1) is docked with the production rack (2), the leading end of the paper that has been fixed on the winding roller (5) can be further extended by the horizontal movement and pulling of the two sets of tension rollers (7). After the two sets of tension rollers (7) drive the paper to slide onto the production rack (2), the bearing plate originally outside the production rack (2) extends under the printing plate (91) under the drive of the pulling cylinder (92) and cooperates with the downward pressing printing plate (91) to complete the printing of the paper thereon. The drying device (10) is used to dry the printed paper.

2. A paper printing and drying device according to claim 1, characterized in that, in order to make the paper able to make segmented punching marks after printing and drying, so as to perform equal segmented shearing subsequently, a set of segmented punching devices (23) is arranged outside the production rack (2) and is drivingly connected by a lead screw (22). The segmented punching device (23) passes through one side wall of the production rack (2) and extends between the two sets of tension rollers (7), and cooperates with a punching platform (236) below the production rack (2) to perform segmented punching on the dried paper passing through it.

3. A paper printing and drying device according to claim 2, characterized in that, The segmented punching device (23) includes a guide rail (231) connected to the side wall at one end of the production frame (2), and a punching knife mounting plate (233) fixedly connected to the guide rail (231) through a punching cylinder (232). A plurality of groups of punching knives (234) distributed linearly are installed on the bottom side of the punching knife mounting plate (233). One end of the lead screw (22) is drivingly connected to a driving motor (235) outside the production frame (2), and the other end is threadedly connected to the inside of the guide rail (231), and is used to drive the guide rail (231) to drive the punching knife (234) to pass through the channel opened at one end of the production frame (2) and then cooperate with the punching platform (236) for punching. And in order to ensure the stability of the punching quality, two groups of pressing plates (237) are distributed on both sides of the punching knife (234). The pressing plates (237) and the punching knife (234) are arranged along the paper traveling direction. When the punching knife (234) cooperates with the punching groove on the punching platform (236) to complete punching, the bottom sides of the two groups of pressing plates (237) are pressed against the paper on both sides of the punching knife (234). A piston sleeve (238) is arranged on the top side of the pressing plate. A corresponding piston rod (239) is slidably connected inside the piston sleeve (238). The top end of the piston rod (239) is fixed on the punching knife mounting plate (233). A pressing spring (2310) is also arranged between the piston sleeve (238) and the punching knife mounting plate (233). When the punching cylinder (232) drives the punching knife (234) to press down for punching, after the two groups of pressing plates (237) are pressed against the punching platform (236), the punching cylinder (232) continues to press down for punching, then the piston sleeve (238) on the pressing plate (237) can press against the compression spring, and at the same time the piston rod (239) extends deep into the piston sleeve (238). The pressing plate (237) continuously presses the paper on the punching platform (236) under the action of the pressing spring (2310), so as to achieve the stability during punching.

4. A paper printing and drying device according to claim 1, characterized in that the drying device (10) includes a drying box. A plurality of drying nozzles are opened on the bottom side of the drying box. A heating and strengthening pipe is installed inside the drying box, and one side of it is also connected to a hot air box through an air inlet pipe. When the air valve of the air inlet pipe is opened, the hot air in the hot air box enters the drying box through the air inlet pipe, and is sprayed out from the drying nozzles under the auxiliary heating and strengthening of the strengthening heating pipe in the drying box to blow and dry the paper located below.

5. A paper printing and drying device according to claim 1, characterized in that In order to enable the tensioning roller (7) to have an elastic tensioning effect during both sliding and tensioning operations, a buffer notch (721) is provided on one side of the slider (72) facing the end rotating shaft (71). A buffer block (722) is slidably connected in the buffer notch (721). The sliding direction of the buffer block (722) is parallel to the driving direction of the pushing cylinder (73). Buffer springs (723) for pressing between the side wall of the buffer notch (721) and the buffer block (722) are further provided on both sides thereof. The two groups of buffer springs (723) press the buffer block (722) against the middle of the buffer notch (721). And the end rotating shaft (71) is rotatably connected in the buffer block (722). At this time, since a group of tensioning rollers (7) are rotatably connected between the two groups of buffer blocks (722), and both ends thereof are abutted and slidably connected in the buffer notches (721) of the buffer blocks (722), while the buffer springs (723) on both sides of the two groups of buffer blocks (722) press the two groups of buffer blocks (722) to move synchronously along the buffer notch (721), so as to drive the tensioning roller (7) to perform a flexible buffer movement along the direction of the buffer notch (721).

6. A paper printing and drying device according to claim 3, wherein, In order to improve the stability of the structure installation on the production rack (2), the production rack (2) is provided to include a U-shaped inner rack (24) and an n-shaped outer rack (25) covering the outside of the inner rack (24). The replacement roller rack (1) is U-shaped and docked with the inner rack (24). And the printing plate (91) and the drying device (10) are both installed on the top of the outer rack (25). The pulling cylinder (92) and the driving motor (235) are both installed outside the outer rack (25).

7. A paper printing and drying device according to claim 1, wherein, The two groups of squeezing rollers (8) are respectively a fixed roller (81) and a movable roller (82). The movable roller (82) is slidably connected in the replacement roller rack (1) through a movable block (83), and is driven by a screw (84) to move towards the fixed roller (81) to clamp the paper passing through it. The movable block (83) is in threaded cooperation with the screw (84). And a rotating motor (85) for driving the screw (84) to rotate is further provided on the replacement roller rack (1). A roller driving motor (86) for driving the corresponding fixed roller (81) and movable roller (82) to rotate is further provided in the movable block (83) and the replacement roller rack (1). When the two groups of squeezing rollers (8) clamp the paper and rotate, it can not only achieve the effect of squeezing the paper neatly, but also provide a pulling and unwinding force for the paper on the unwinding roller (6).

8. A paper printing and drying device according to claim 1, wherein, In order to make the roll change operation more convenient, docking slots one (61) are provided at both ends of the roller shaft of the unwinding roller (6). A top cylinder one (62) is installed on the replacement roller rack (1). A transfer rod (63) for being transferred into the docking slot one (61) is provided at the end of the top cylinder one (62).

9. A paper printing and drying device according to claim 1, characterized in that, in order to make the roll change operation more convenient, docking slots two (51) are provided at both ends of the roller shaft of the winding roller (5), two groups of rotating disks (52) are installed on the replacement roller frame (1), a second jack (53) is fixed at the center of the rotating disk (52), and a cross-shaped docking block (54) is fixed at the end of the second jack (53). The docking block (54) is inserted into the cross-shaped docking slot two (51) to drive the winding roller (5) to rotate and wind along the center of the winding roller (5) under the drive of the rotating disk (52). When it is necessary to reinstall or disassemble the winding roller (5), it only needs to start the second jack (53) to withdraw the docking block (54) from the docking slot two (51).

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