A stock device for a web-fed printing press

Abstract

The present invention relates to the technical field of packaging and printing equipment, and particularly relates to a storage device for a web-fed printing press, which comprises a frame fixedly connected to the ground and an independent paper guiding roller, a fixed roller group, a movable roller group, a traction roller group and a synchronization mechanism all arranged inside the frame; the independent paper guiding roller is horizontally arranged, and both ends of the independent paper guiding roller are rotationally connected to the frame; the fixed roller group comprises a fixed seat fixedly connected to the frame and a plurality of fixed paper guiding rollers all rotationally connected to the fixed seat; the movable roller group comprises a vertically arranged column, a movable roller seat slidably connected to the column and a plurality of movable paper guiding rollers all rotationally connected to the movable roller seat; the traction roller group is used for generating a traction force on the paper; the synchronization mechanism comprises a transmission unit and a threaded rod, and the driving roller drives the movable roller group to move through the transmission unit according to the rotation state of the independent paper guiding roller. This device can effectively prevent the problem that the upward movement of the movable roller group driven by the pulling force of the paper causes the paper to bear a large tension and deform.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging and printing equipment, and particularly relates to a material storage device for a web-fed printing press. Background Art

[0002] In the packaging and printing industry, traditional web-fed in-line printing presses (hot stamping, die cutting) generally use a single unwind arm method for paper roll replacement. When replacing the paper roll and aligning and splicing the paper, the entire equipment must be stopped. After stopping, a special tension floating roller is used to keep the paper at a constant tension. After the paper roll replacement and alignment and splicing are completed, the equipment is restarted. The stopping process will take a certain amount of time, thus affecting the production efficiency.

[0003] To solve the above problems, the prior art CN 205130586 U discloses a material storage device for non-stop alignment and splicing of web-fed printing presses, including a frame and a paper guiding roller installed on the frame. A fixed paper guiding roller group, a movable paper guiding roller group, and a cylinder are also installed inside the frame. The fixed paper guiding roller group includes at least two fixed paper guiding rollers and a fixed roller seat. The fixed paper guiding rollers are installed on the upper part of the frame through the fixed roller seat and can rotate around their own axes relative to the fixed roller seat. The movable paper guiding roller group includes at least two movable paper guiding rollers and a movable roller seat. The movable paper guiding rollers are supported on the movable roller seat and can rotate around their own axes relative to the movable roller seat. The movable paper guiding roller group is located below the fixed paper guiding roller group and is supported on the frame by the cylinder and can move vertically up and down under the action of the cylinder.

[0004] When the above prior art performs non-stop replacement of web-fed paper, it is necessary to force the movable paper guiding roller, the movable roller seat, and the cylinder to move axially by the pulling force generated by the traction roller on the paper to release the pre-stored paper, which will cause a large increase in the pulling force on the paper and deform the paper. Summary of the Invention

[0005] Aiming at the deficiencies of the above prior art, the technical problem to be solved by the present invention is: to provide a material storage device for a web-fed printing press to solve the problem that the paper is deformed due to the large pulling force of the paper in the material storage device during the non-stop paper splicing process of the existing web-fed paper.

[0006] To solve the above technical problems, a technical solution adopted by the present invention is: to provide a storage device for a web printing press, including a frame fixedly connected to the ground and an independent paper guiding roller, a fixed roller group, a movable roller group, a traction roller group and a synchronization mechanism all arranged in the frame; the independent paper guiding roller is horizontally arranged, and both ends of the independent paper guiding roller are rotatably connected to the frame; the fixed roller group includes a fixed seat fixedly connected to the frame and a plurality of fixed paper guiding rollers all rotatably connected to the fixed seat; the movable roller group includes a vertically arranged column, a movable roller seat slidably connected to the column and a plurality of movable paper guiding rollers all rotatably connected to the movable roller seat; the traction roller group is horizontally arranged, and the traction roller group is used to generate a traction force on the paper, and the traction roller group includes a driving roller and a pressing roller for pressing the paper against the driving roller; the synchronization mechanism includes a transmission unit and a threaded rod, the threaded rod is vertical, the threaded rod is threadedly connected to the movable roller seat, and the driving roller drives the threaded rod to rotate according to the rotation state of the independent paper guiding roller through the transmission unit to drive the movable roller group to move up or down.

[0007] With the above arrangement, compared with the prior art in which the upward movement of the movable roller group is driven by the tension of the paper, in this solution, the driving roller drives the threaded rod to rotate according to the rotation state of the independent paper guiding roller through the transmission unit to drive the movable roller group to move up or down, avoiding driving the upward movement of the movable roller group by the tension of the paper and preventing the paper from deforming due to excessive tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0009] Figure 1 It is a schematic structural diagram of the present invention in the left view direction.

[0010] Figure 2 It is a schematic structural diagram of the present invention in the front view direction after removing some components.

[0011] Figure 3 It is a schematic structural diagram of the present invention in the top view direction after removing some components.

[0012] Figure 4 It is another schematic structural diagram of the present invention in the top view direction after removing some components.

[0013] Figure 5 It is a schematic structural diagram of the end part of the independent paper guiding roller provided with a circular plate.

[0014] Figure 6 It is a schematic diagram of the cooperation between the column and the left vertical plate in the viewing direction.

[0015] Figure 7 Schematic diagram of the cooperation between the vertical column in the right view direction and the second vertical slider.

[0016] Figure 8 Schematic diagram of the cooperation between the fixed paper guiding roller in the front view direction and the left seat body and the right seat body.

[0017] Figure 9 Schematic diagram of the cooperation between the fixed paper guiding roller in the right view direction and the left seat body.

[0018] The meanings of the reference numerals in the drawings are as follows:

[0019] Frame - 10; Independent paper guiding roller - 20; Bearing seat - 201; Circular plate - 202; Horizontal slideway - 203; Horizontal slide post - 204; Baffle - 2041; Vertical slideway - 205; Vertical slide post - 206; First spring - 207; First channel - 208; Pulling wire - 209; Left seat body - 301; Right seat body - 302; First vertical chute - 303; First vertical slider - 304; Second spring - 305; Fixed paper guiding roller - 306; Vertical column - 401; Second vertical chute - 402; Movable paper guiding roller - 403; Left vertical plate - 404; Right vertical plate - 405; Second vertical slider - 406; Cross plate - 407; Driving roller - 501; Pressing roller - 502; Support plate - 601; Horizontal plate - 602; First transmission shaft - 603; Second transmission shaft - 604; First electromagnetic clutch - 605; First bevel gear - 606; Third transmission shaft - 607; Fourth transmission shaft - 608; Second electromagnetic clutch - 609; Second bevel gear - 6010; Threaded rod - 701; Third bevel gear - 702; First push button switch - 801; Second push button switch - 802; Third push button switch - 803; Driving pulley - 804; Driven pulley - 805; Paper - 90. Detailed implementation manners

[0020] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

[0022] A storage device for a web-fed printing press in this embodiment, such asFigures 1-4 As shown in the figure, it includes a frame 10 fixedly connected to the ground and an independent paper guiding roller 20, a fixed roller group, a movable roller group, a traction roller group and a synchronization mechanism, all of which are arranged inside the frame 10.

[0023] The frame 10 is a square box body with an open bottom end. The top of the frame 10 is provided with a feeding port for the paper 90 to enter the frame 10, and the bottom of one side wall of the frame 10 is provided with a discharging port for the paper 90 to be conveyed out of the frame 10. The independent paper guiding roller 20 is horizontally arranged, and bearing seats 201 are arranged at both ends of the independent paper guiding roller 20. The independent paper guiding roller 20 is rotationally connected to the frame 10 through the bearing seats 201. The fixed roller group includes a fixed seat fixedly connected to the frame 10 and a plurality of fixed paper guiding rollers 306 all rotationally connected to the fixed seat. The movable roller group includes a vertically arranged column 401, a movable roller seat slidably connected to the column 401 and a plurality of movable paper guiding rollers 403 all rotationally connected to the movable roller seat. The traction roller group is horizontally arranged and is used to generate a traction force on the paper 90. The traction roller group includes a driving roller 501, a motor for driving the driving roller 501 to rotate and a pressing roller 502 for pressing the paper 90 against the driving roller 501. The synchronization mechanism includes a transmission unit and a threaded rod 701. The threaded rod 701 is vertical, and the threaded rod 701 is threadedly connected to the movable roller seat. The driving roller 501 drives the threaded rod 701 to rotate through the transmission unit according to the rotation state of the independent paper guiding roller 20 to drive the movable roller group to move up or down.

[0024] As Figure 2 shown in the figure, the transmission unit includes a support frame, a horizontally arranged transmission shaft group and a control structure. The support frame includes two symmetrically arranged support plates 601 and a horizontal plate 602 fixedly connected to the upper ends of the support plates 601. The support plates 601 are vertically arranged, and the lower ends of the support plates 601 are fixedly connected to the ground.

[0025] Combined with Figure 3 shown in the figure, the transmission shaft group includes a left transmission group on one side of the support frame and a right transmission group symmetrically arranged on the other side of the support frame. The left transmission group includes a first transmission shaft 603 and a second transmission shaft 604 arranged coaxially. The first transmission shaft 603 is connected to the second transmission shaft 604 through a first electromagnetic clutch 605. The first electromagnetic clutch 605 is externally connected to a power source through a power cord. One end of the first transmission shaft 603 is fixedly connected to the first electromagnetic clutch 605, the other end of the first transmission shaft 603 is rotationally connected to the frame 10, one end of the second transmission shaft 604 is fixedly connected to the first electromagnetic clutch 605, the other end of the second transmission shaft 604 is fixedly connected to a first bevel gear 606, and the second transmission shaft 604 vertically passes through a support plate 601 and is rotationally connected to the support plate 601.

[0026] The right transmission group includes a third transmission shaft 607 and a fourth transmission shaft 608 that are both coaxially arranged with the first transmission shaft 603. The third transmission shaft 607 and the fourth transmission shaft 608 are connected by a second electromagnetic clutch 609. The second electromagnetic clutch 609 is externally connected to a power source through a power cord. One end of the third transmission shaft 607 is fixedly connected to the second electromagnetic clutch 609, and the other end of the third transmission shaft 607 is rotatably connected to the frame 10. One end of the fourth transmission shaft 608 is fixedly connected to the second electromagnetic clutch 609, and the other end of the fourth transmission shaft 608 is fixedly connected to a second bevel gear 6010. The fourth transmission shaft 608 vertically passes through another support plate 601 and is rotatably connected to the support plate 601.

[0027] The lower end of the threaded rod 701 passes downward through the horizontal plate 602. The threaded rod 701 is rotatably connected to the horizontal plate 602 through a two-way thrust bearing. A third bevel gear 702 is fixedly connected to the lower end of the threaded rod 701. The third bevel gear 702 meshes with both the first bevel gear 606 and the second bevel gear 6010.

[0028] The traction roller group is arranged near the discharge port. The driving roller 501 is horizontally arranged. Both ends of the driving roller 501 are rotatably connected to the frame 10. Driving pulleys 804 are fixedly connected to both ends of the driving roller 501. Driven pulleys 805 that cooperate with the adjacent driving pulleys 804 on the driving roller 501 are correspondingly arranged on the first transmission shaft 603 and the third transmission shaft 607. The first transmission shaft 603 and the fourth transmission shaft 608 are both connected to the driving roller 501 by belt transmission. Preferably, the first transmission shaft 603 and the fourth transmission shaft 608 are both in V-belt transmission with the driving roller 501.

[0029] Such as Figure 2 、 Figure 5As shown, the control structure includes a circular plate 202 coaxially and fixedly connected to one end of an independent paper guide roller 20 near the independent paper guide roller 20, a transverse slideway 203 arranged along the axis of the independent paper guide roller 20 on the end face of the independent paper guide roller 20 near the circular plate 202, a first push-button switch 801 and a second push-button switch 802 both arranged in the bearing mounting holes of the bearing seat 201. The first push-button switch 801 is a normally closed switch, and the second push-button switch 802 is a normally open switch. A transverse slide column 204 is slidably connected in the transverse slideway 203. The outer end of the transverse slide column 204 extends outside the transverse slideway 203. The outer end of the transverse slide column 204 is rotatably connected to a circular baffle 2041. The baffle 2041 is coaxially arranged with the transverse slide column 204. The baffle 2041 can only rotate and cannot move axially along the independent paper guide roller 20. The inner end of the transverse slide column 204 is located in the transverse slideway 203. A first spring 207 is horizontally arranged in the transverse slideway 203. One end of the first spring 207 is fixedly connected to the bottom of the transverse slideway 203, and the other end of the first spring 207 is fixedly connected to the transverse slide column 204. Under the elastic force of the first spring 207, the baffle 2041 presses and triggers both the first push-button switch 801 and the second push-button switch 802 at the same time. The second push-button switch 802 is connected in series on the power line of the second electromagnetic clutch 609.

[0030] A vertical slideway 205 is arranged radially along the circular plate 202 in the circular plate 202. A vertical slide column 206 is slidably connected in the vertical slideway 205. A first channel 208 that communicates the transverse slideway 203 with the vertical slideway 205 is arranged in the independent paper guide roller 20. The first channel 208 has an arc-shaped trend. A pull wire 209 is arranged in the transverse slideway 203. One end of the pull wire 209 is fixedly connected to the inner end of the transverse slide column 204, and the other end of the pull wire 209 passes through the first channel 208 and is fixedly connected to the vertical slide column 206.

[0031] As Figure 1 , Figure 2 , Figure 8 , Figure 9As shown, the fixed seat includes a left seat body 301 and a right seat body 302 which are symmetrically arranged. Both the left seat body 301 and the right seat body 302 are horizontally arranged. The left seat body 301 and the right seat body 302 are respectively fixedly connected to a pair of symmetric side plates of the frame 10. In this embodiment, there are 4 fixed paper guide rollers 306, and the 4 fixed paper guide rollers 306 are arranged in parallel. In other feasible embodiments, the number of fixed paper guide rollers 306 can be flexibly set according to actual needs. First vertical chutes 303 corresponding to the fixed paper guide rollers 306 are symmetrically arranged on both the left seat body 301 and the right seat body 302. First vertical sliders 304 are slidably connected in the first vertical chutes 303. Second springs 305 are vertically arranged in the first vertical chutes 303. The upper end of the second spring 305 is fixedly connected to the bottom of the first vertical slider 304, and the lower end of the second spring 305 is fixedly connected to the bottom wall of the first vertical chute 303. Both ends of the fixed paper guide roller 306 are respectively rotatably connected to the corresponding sliders.

[0032] The movable roller seat includes a left vertical plate 404 and a right vertical plate 405 which are symmetrically arranged. Both ends of the movable paper guide roller 403 are respectively rotatably connected to the left vertical plate 404 and the right vertical plate 405. In this embodiment, there are 4 movable paper guide rollers 403, and the 4 movable paper guide rollers 403 are all horizontally arranged. In other feasible embodiments, the number of movable paper guide rollers 403 can be flexibly set according to actual needs. The left vertical plate 404 and the right vertical plate 405 are fixedly connected by a horizontally arranged cross plate 407. A threaded through hole matching with the threaded rod 701 is vertically arranged in the middle of the cross plate 407, and the threaded rod 701 is threadedly connected to the cross plate 407. As Figure 1 、 Figure 3 、 Figure 4 shown, there are 4 columns 401, and the 4 columns 401 are symmetrically distributed in a square shape. The lower ends of the columns 401 are fixedly connected to the ground. Combining Figure 6 、 Figure 7 shown, second vertical chutes 402 are arranged on the columns 401. Second vertical sliders 406 matching with the second vertical chutes 402 on the adjacent columns 401 are fixedly connected to both the left vertical plate 404 and the right vertical plate 405. A third button switch 803 is arranged at the bottom of one second vertical chute 402. The third button switch 803 is a normally closed switch. Both the first button switch 801 and the third button switch 803 are connected in series on the power line of the first electromagnetic clutch 605.

[0033] The axes of the independent paper guide roller 20, the fixed paper guide roller 306, the movable paper guide roller 403, the driving roller 501 and the first transmission shaft 603 are all parallel to each other.

[0034] The working principle of this solution is as follows: The paper 90 passes through the independent paper guide roller 20 and then alternately passes through the movable paper guide roller 403 and the fixed paper guide roller 306 in sequence and is sleeved. Then the paper 90 passes through between the driving roller 501 and the pressing roller 502. The pressing roller 502 presses the paper 90 against the surface of the driving roller 501. The paper 90 between the movable paper guide roller 403 and the fixed paper guide roller 306 maintains a certain tension. When the paper 90 does not move, the independent paper guide roller 20 does not rotate. At this time, under the elastic force of the first spring 207, the baffle 2041 on the transverse sliding column 204 presses the first button switch 801 and the second button switch 802 at the same time. At this time, the pull wire 209 pulls the vertical sliding column 206 closer to the independent paper guide roller 20. Under the pressing of the baffle 2041, the first button switch 801 is disconnected, and the second button switch 802 is closed. At this time, the second electromagnetic clutch 609 is energized and closed.

[0035] When the driving roller 501 drives the paper 90 to move during operation, the driving roller 501 drives the first transmission shaft 603 and the third transmission shaft 607 to rotate synchronously through belt transmission. Driven by the paper 90, the independent paper guide roller 20 rotates. The circular plate 202 rotates synchronously, causing the vertical sliding column 206 to move away from the independent paper guide roller 20. The pull wire 209 pulls the transverse sliding column 204 to contract towards the transverse slideway 203, causing the baffle 2041 to disengage from the first button switch 801 and the second button switch 802. The first button switch 801 is closed and the second button switch 802 is disconnected. The disconnection of the second button switch 802 causes the second electromagnetic clutch 609 to disconnect. At this time, both the first button switch 801 and the third button switch 803 are closed, causing the first electromagnetic clutch 605 to close. The driving roller 501 drives the second transmission shaft 604 to rotate through belt transmission and via the first electromagnetic clutch 605. The first bevel gear 606 on the second transmission shaft 604 drives the third bevel gear 702 to rotate forward, thereby driving the threaded rod 701 to rotate forward, causing the movable roller seat threadedly engaged with the threaded rod 701 to move downward. When the movable roller seat moves downward to contact the third button switch 803, the third button switch 803 is triggered and disconnected. At this time, the movable roller seat is at the lowest position, and the distance between the movable paper guide roller 403 and the fixed paper guide roller 306 is the largest. The largest amount of paper 90 is stored between the movable paper guide roller 403 and the fixed paper guide roller 306.

[0036] When non-stop paper splicing is required, the paper cylinder stops feeding, and the paper 90 on the independent paper guide roller 20 stops moving, causing the independent paper guide roller 20 to stop rotating. At this time, under the elastic force of the first spring 207, the baffle 2041 on the transverse sliding column 204 presses the first button switch 801 and the second button switch 802 simultaneously. At the same time, the wire 209 pulls the vertical sliding column 206 closer to the independent paper guide roller 20. Under the pressing of the baffle 2041, the first button switch 801 disconnects, and the second button switch 802 closes. At this time, the second electromagnetic clutch 609 is energized and closed, and the first electromagnetic clutch 605 disconnects. The driving roller 501 keeps rotating to traction the paper 90 and drives the fourth transmission shaft 608 to rotate through belt drive and then through the second electromagnetic clutch 609. The second bevel gear 6010 on the fourth transmission shaft 608 drives the third bevel gear 702 to rotate in the reverse direction, thereby driving the threaded rod 701 to rotate in the reverse direction. The reversely rotating threaded rod 701 drives the movable roller seat to move upward to release the paper 90 stored between the movable paper guide roller 403 and the fixed paper guide roller 306. When the splicing of the new paper cylinder is completed and feeding starts, the independent paper guide roller 20 starts to rotate again under the pulling force of the paper 90, and the movable roller seat moves downward again to store the paper 90, and so on.

[0037] Since the upward movement of the movable roller seat is driven by the driving roller 501 through belt drive, gear drive and screw drive, in actual use, a reasonable total transmission ratio can be set to make the moving speed of the movable roller seat match the paper receiving rate of the driving roller 501, so as to keep the paper 90 within a certain reasonable range and prevent the paper 90 from deforming.

[0038] When the paper 90 is hung on the fixed paper guide roller 306 and the paper 90 is kept under a certain tension, the second spring 305 will contract and store energy to a certain extent. When the independent paper guide roller 20 just starts to rotate and is not enough to make the baffle 2041 leave the first button switch 801 and the second button switch 802, the rotation of the driving roller 501 will make the movable roller seat move upward and release the paper 90 to make the paper 90 loose. At this time, the second spring 305 elongates to make the paper 90 taut so that the paper 90 has a certain tension at any time to be able to drive the independent paper guide roller 20 to rotate.

[0039] Compared with the prior art in which the traction roller pulls the movable paper guide roller 403 group and the cylinder piston rod upward through the paper 90, when the movable roller seat in this solution moves upward to release the paper 90, the change in the pulling force of the paper 90 is smaller, effectively preventing the paper 90 from deforming due to the increase in the pulling force of the paper 90.

[0040] The above are only embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope claimed in this application shall be subject to the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A storage device for a web-fed printing press, comprising a frame fixedly connected to the ground, characterized in that: It also includes an independent paper guiding roller, a fixed roller group, a movable roller group, a traction roller group and a synchronization mechanism, all of which are arranged inside the frame; The independent paper guiding roller is horizontally arranged, and both ends of the independent paper guiding roller are rotatably connected to the frame; The fixed roller group includes a fixed seat fixedly connected to the frame and a plurality of fixed paper guiding rollers rotatably connected to the fixed seat; The movable roller group includes a vertically arranged column, a movable roller seat slidably connected to the column and a plurality of movable paper guiding rollers rotatably connected to the movable roller seat; The traction roller group is horizontally arranged and is used to generate a traction force on the paper. The traction roller group includes a driving roller and a pressing roller for pressing the paper against the driving roller; The synchronization mechanism includes a transmission unit and a threaded rod. The threaded rod is vertical and is threadedly connected to the movable roller seat. The driving roller drives the threaded rod to rotate through the transmission unit according to the rotation state of the independent paper guiding roller, so as to drive the movable roller group to move up or down; The frame is a square box body with an open bottom end. An inlet for the paper to enter the frame is arranged at the top of the frame, and an outlet for the paper to be conveyed out of the frame is arranged at the bottom of one side wall of the frame; The transmission unit includes a support frame, a horizontally arranged transmission shaft group and a control structure; The support frame includes symmetrically arranged support plates and a horizontal plate fixedly connected to the upper ends of the support plates. The lower ends of the support plates are fixedly connected to the ground; The transmission shaft group includes a left transmission group on one side of the support frame and a right transmission group symmetrically arranged on the other side of the support frame. The left transmission group includes a first transmission shaft and a second transmission shaft arranged coaxially. The first transmission shaft and the second transmission shaft are connected by a first electromagnetic clutch. One end of the first transmission shaft is fixedly connected to the first electromagnetic clutch, the other end of the first transmission shaft is rotatably connected to the frame, one end of the second transmission shaft is fixedly connected to the first electromagnetic clutch, the other end of the second transmission shaft is fixedly connected to a first bevel gear, and the second transmission shaft passes through one of the support plates and is rotatably connected to the support plate; The right transmission group includes a third transmission shaft and a fourth transmission shaft arranged coaxially. The third transmission shaft and the fourth transmission shaft are connected by a second electromagnetic clutch. One end of the third transmission shaft is fixedly connected to the second electromagnetic clutch, the other end of the third transmission shaft is rotatably connected to the frame, one end of the fourth transmission shaft is fixedly connected to the second electromagnetic clutch, the other end of the fourth transmission shaft is fixedly connected to a second bevel gear, and the fourth transmission shaft passes through the other support plate and is rotatably connected to the support plate; The lower end of the threaded rod passes downward through the horizontal plate, and the threaded rod is rotatably connected to the horizontal plate. The lower end of the threaded rod is fixedly connected to a third bevel gear, and the third bevel gear meshes with both the first bevel gear and the second bevel gear. The first transmission shaft and the fourth transmission shaft are both belt-driven to the driving roller; The independent paper guiding roller is rotatably connected to the frame through a bearing seat. The control structure includes a circular plate coaxially and fixedly connected to the independent paper guiding roller at one end close to the independent paper guiding roller, a transverse slideway arranged along the axis of the independent paper guiding roller on the end face of the independent paper guiding roller close to the circular plate, a first push button switch and a second push button switch both arranged in the bearing seat. A transverse slide column is slidably connected in the transverse slideway. The outer end of the transverse slide column extends out of the transverse slideway. The outer end of the transverse slide column is rotatably connected to a baffle. The inner end of the transverse slide column is located in the transverse slideway. A first spring is horizontally arranged in the transverse slideway. One end of the first spring is fixedly connected to the bottom of the transverse slideway, and the other end of the first spring is fixedly connected to the transverse slide column. Under the elastic force of the first spring, the baffle presses and triggers the first push button switch and the second push button switch simultaneously. A vertical slideway is arranged along the radial direction of the circular plate in the circular plate. A vertical slide column is slidably connected in the vertical slideway. A first channel communicating the transverse slideway with the vertical slideway is arranged in the independent paper guiding roller. A pull wire is arranged in the transverse slideway. One end of the pull wire is fixedly connected to the transverse slide column, and the other end of the pull wire passes through the first channel and is fixedly connected to the vertical slide column; The first push button switch is a normally closed switch, the second push button switch is a normally open switch. A third push button switch is arranged at the lower part of the column. The third push button switch is a normally closed switch. Both the first push button switch and the third push button switch are connected in series on the power supply line of the first electromagnetic clutch. The second push button switch is connected in series on the power supply line of the second electromagnetic clutch.

2. The material storage device of the web-fed printing press according to claim 1, characterized in that: The fixed seat includes a left seat body and a right seat body symmetrically arranged. Both the left seat body and the right seat body are fixedly connected to the frame. First vertical chutes corresponding to the fixed paper guiding roller are symmetrically arranged on both the left seat body and the right seat body. First vertical sliders are slidably connected in the first vertical chutes. Second springs are vertically arranged in the first vertical chutes. The upper end of the second spring is fixedly connected to the bottom of the first vertical slider, and the lower end of the second spring is fixedly connected to the bottom wall of the first vertical chute. Both ends of the fixed paper guiding roller are rotatably connected to the corresponding sliders.

3. The storage device of the web-fed printing press according to claim 2, characterized in that: The movable roller seat includes a left vertical plate and a right vertical plate symmetrically arranged. Both ends of the movable paper guiding roller are rotatably connected to the left vertical plate and the right vertical plate respectively. The left vertical plate and the right vertical plate are fixedly connected by a horizontally arranged cross plate. A threaded through hole matching with the threaded rod is vertically arranged in the middle of the cross plate. The threaded rod is threadedly connected to the cross plate. There are 4 columns. The 4 columns are symmetrically distributed in a square shape. Second vertical chutes are arranged on the columns. Second vertical sliders matching with the second vertical chutes on the adjacent columns are fixedly connected to both the left vertical plate and the right vertical plate. The third push button switch is arranged at the bottom of one of the second vertical chutes.

4. The storage device of the web-fed printing press according to claim 3, wherein: Both ends of the driving roller are provided with driving pulleys. Driven pulleys matching with the adjacent driving pulleys on the driving roller are correspondingly arranged on both the first transmission shaft and the third transmission shaft.

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