Paper control device of gravure press

Abstract

The utility model relates to the technical field of intaglio printing presses, in particular to a paper control device of an intaglio printing press, which comprises a support, and two mounting frames are fixedly mounted on the support. A control assembly used for preventing paper from deviating when the gravure press rolls is arranged between the two mounting frames, the control assembly comprises a control roller arranged between the two mounting frames, the two ends of the control roller are fixedly connected with mounting shafts, and movable blocks used for controlling the roller to swing are arranged at the tops of the mounting frames. By arranging the control assembly, when the gravure press is used for rolling, the registration electric eye detects the edge of paper in real time and judges the position of the paper, the hydraulic cylinders at the two ends make corresponding actions when the position deviates, the control roller can make corresponding swing according to paper deviation treatment, and therefore the paper is driven to swing to adjust the position of the paper, and the paper is prevented from being damaged. The paper is controlled and adjusted in real time, the deviation rectifying effect is achieved, and therefore the phenomenon that the edge is uneven and misplaced in the follow-up rolling process of the rolling cylinder is prevented.

Description

Technical Field

[0001] This utility model relates to the field of gravure printing machine technology, and in particular to a paper control device for a gravure printing machine. Background Technology

[0002] A gravure printing machine is a printing device that uses a gravure plate as the printing plate. It transfers ink from the grooves of the gravure plate to the surface of the substrate through pressure. It features thick ink layers, bright colors, rich tones, and high printing quality, and is widely used in packaging printing, securities printing, decorative material printing and other fields.

[0003] During the operation of a gravure printing machine, improper tension settings, uneven winding pressure rollers, and other factors can cause uneven winding of the printed paper during the winding process. This results in uneven or misaligned edges of the paper on the winding drum, leading to appearance defects. Over time, this can even cause the roll to become loose, deformed, or unusable. Therefore, it is necessary for the gravure printing machine to control any potential paper deviations during the winding process.

[0004] Therefore, a paper control device for a gravure printing machine is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a paper control device for a gravure printing machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a paper control device for a gravure printing machine, comprising a bracket, on which two mounting frames are fixedly mounted; between the two mounting frames is a control component for preventing paper deviation during the winding of the gravure printing machine, the control component comprising a control roller disposed between the two mounting frames, mounting shafts fixedly connected to both ends of the control roller, and a movable block for the control roller to swing at the top of the mounting frame, the movable block being rotatably connected to a connecting seat for connecting the mounting shafts.

[0007] Preferably, the control roller is provided with a rubber cylinder, the control roller is provided with a plurality of sliding grooves, the rubber cylinder is provided with a limiting part, and the limiting part is engaged in the sliding groove.

[0008] Preferably, a guide rod is fixedly installed on the mounting frame, and a movable block is slidably connected to the guide rod. A connecting block is fixedly connected to the movable block, and a hydraulic cylinder is fixedly installed on the mounting frame, with the hydraulic cylinder fixedly connected to the connecting block.

[0009] Preferably, a limiting rod and a threaded rod are rotatably connected to the connecting seat. The limiting rod and the threaded rod are provided with pressure blocks that cooperate with the connecting seat to clamp the mounting shaft. The pressure blocks are slidably connected to the limiting rod and threadedly connected to the threaded rod.

[0010] Preferably, a positioning rod is fixedly connected to the mounting shaft, and a through hole adapted to the positioning rod is provided on the pressure block.

[0011] Preferably, a fixed plate is fixedly installed on the bracket, a movable plate is embedded in the fixed plate, an electric push rod is fixedly installed on the movable plate, and a aligning photoelectric sensor is fixedly installed on the electric push rod.

[0012] Preferably, the movable plate is provided with a plurality of screw holes and positioning holes evenly distributed, the screw holes are provided with bolts and the bolts are threadedly connected to the fixed plate, and the fixed plate is provided with positioning pins that are adapted to the positioning holes.

[0013] The beneficial effects of this utility model are:

[0014] This invention, through the setting of a control component, enables the gravure printing machine to use a photoelectric sensor to detect the edge of the paper in real time during winding, determine its position, and cause the hydraulic cylinders at both ends to act accordingly when the position deviates. This allows the control roller to swing accordingly based on the paper deviation, thereby driving the paper to swing and adjust its position. This real-time control and adjustment of the paper achieves a correction effect, thus preventing uneven edges and misalignment during subsequent winding. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a paper control device for a gravure printing machine according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the movable block structure of a paper control device for a gravure printing machine according to an embodiment of the present invention;

[0018] Figure 3 This invention relates to a paper control device for a gravure printing machine. Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the control roller part of a paper control device for a gravure printing machine according to an embodiment of the present invention.

[0020] The markings in the diagram are as follows: 1. Bracket; 2. Mounting frame; 3. Control roller; 4. Mounting shaft; 5. Movable block; 6. Connecting seat; 7. Rubber cylinder; 8. Slide groove; 9. Limiting part; 10. Guide rod; 11. Connecting block; 12. Hydraulic cylinder; 13. Limiting rod; 14. Threaded rod; 15. Pressure block; 16. Positioning rod; 17. Through hole; 18. Fixed plate; 19. Moving plate; 20. Electric push rod; 21. Alignment photoelectric sensor; 22. Screw hole; 23. Positioning hole; 24. Bolt; 25. Positioning pin. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] like Figures 1 to 4 As shown in the figure, a specific embodiment of this utility model provides a paper control device for a gravure printing machine, including a bracket 1, on which two mounting frames 2 are fixedly installed; between the two mounting frames 2 is a control component for preventing paper deviation during the winding of the gravure printing machine. By setting the control component, the gravure printing machine can control the paper in real time during winding, thereby preventing deviation and preventing uneven edges and misalignment of the paper on the roll. The control component includes a control roller 3 disposed between the two mounting frames 2, with mounting shafts 4 fixedly connected to both ends of the control roller 3. The top of the mounting frame 2 is provided with a movable block 5 for the control roller 3 to swing, and a connecting seat 6 for connecting the mounting shaft 4 is rotatably connected to the movable block 5.

[0024] like Figure 1 and Figure 3As shown, specifically, a fixed plate 18 is fixedly installed on the bracket 1, a movable plate 19 is embedded in the fixed plate 18, an electric push rod 20 is fixedly installed on the movable plate 19, and a registration photoelectric sensor 21 is fixedly installed on the electric push rod 20. The entire control device is located at the front end of the winding position of the gravure printing machine, as shown. Figure 1 As shown, during the process of the paper passing through the entire device, the alignment photoelectric sensor 21 detects the edge of the paper to determine whether the edge position has shifted. The alignment photoelectric sensor 21 is a commonly used component for detecting whether the position has shifted, and it can accurately determine the position of the paper. Furthermore, the electric push rod 20 can adjust the position of the alignment photoelectric sensor 21 according to the width of the paper, so that the alignment photoelectric sensor 21 is adjusted to the accurate position to adapt to different widths of paper.

[0025] The movable plate 19 is evenly provided with a plurality of screw holes 22 and positioning holes 23. Bolts 24 are provided in the screw holes 22 and are threadedly connected to the fixed plate 18. The fixed plate 18 is provided with positioning pins 25 that are adapted to the positioning holes 23. The bolts 24 can be removed by threading them to the fixed plate 18, thereby lifting the movable plate 19 and moving it. After moving it to a suitable position, the movable plate 19 is installed back onto the fixed plate 18, so that the positioning pins 25 on the fixed plate 18 are inserted into the corresponding positioning holes 23. At the same time, the bolts 24 pass through the corresponding screw holes 22 and are threadedly connected to the fixed plate 18 again, thereby fixing the movable plate 19. The position adjustment of the movable plate 19 is the position adjustment of the photoelectric sensor 21, thereby making up for the limited formation of the conventional electric push rod 20. Furthermore, the cooperation between the positioning pins 25 and the positioning holes 23 makes the positioning of the movable plate 19 more accurate and less prone to movement, thus ensuring the accurate positioning of the photoelectric sensor 21.

[0026] like Figures 1 to 4As shown, specifically, a guide rod 10 is fixedly installed on the mounting frame 2, and a movable block 5 is slidably connected to the guide rod 10. A connecting block 11 is fixedly connected to the movable block 5. A hydraulic cylinder 12 is fixedly installed on the mounting frame 2, and the hydraulic cylinder 12 is fixedly connected to the connecting block 11. A limit rod 13 and a threaded rod 14 are rotatably connected to the connecting seat 6. The limit rod 13 and the threaded rod 14 are provided with a pressure block 15 that cooperates with the connecting seat 6 to clamp the mounting shaft 4. The pressure block 15 is slidably connected to the limit rod 13, and the pressure block 15 is threadedly connected to the threaded rod 14. A positioning rod 16 is fixedly connected to the mounting shaft 4. A through hole 17 adapted to the positioning rod 16 is opened on the pressure block 15. If the paper is detected to shift to the right, the alignment photoelectric sensor 21 sends a signal to the externally installed control actuator. The control actuator issues a command to make the right side shift... The hydraulic cylinder 12 pushes the connecting block 11 to move the movable block 5 on the guide rod 10. The movable block 5 applies a thrust to the connecting seat 6 and the pressure block 15 at the top, thereby pushing the mounting shaft 4 and the control roller 3. Since the connecting seat 6 is rotatably connected to the movable block 5, the movable block 5 pushes the connecting seat 6 and the pressure block 15 to swing to the left, thus causing the control roller 3 to swing to the left. At the same time, the actuator controls the hydraulic cylinder 12 on the left to gradually retract, so that the components on the left move in opposite directions, thereby cooperating with the components on the right to achieve the effect of the control roller 3 swinging to the left. The control roller 3 is equipped with a rubber cylinder 7. When the control roller 3 swings to the left, it drives the rubber cylinder 7 to swing to the left. At this time, the paper passing on the rubber cylinder 7 swings to the left, adjusting the position of the paper to the left so that the paper no longer shifts to the right.

[0027] Conversely, when the registration photoelectric sensor 21 detects that the paper is shifting to the left, the control actuator causes the hydraulic cylinder 12 on the left to push the movable block 5 to move. Its working principle is the same as described above, pushing the control roller 3 to swing to the right. At the same time, the hydraulic cylinder 12 on the right contracts, causing the various parts on the right to start in the opposite direction. This, in conjunction with the various parts on the left, achieves the effect of the control roller 3 swinging to the right. Consequently, the control roller 3 swings to the right, causing the paper to swing to the right and adjusting the paper position so that the paper no longer shifts to the left. In actual operation, the registration photoelectric sensor 21 will perform position detection in real time. The control roller 3 will not precisely adjust in a certain direction at once. Therefore, it will quickly and continuously adjust the left and right swing of the control roller 3 to cooperate with the registration photoelectric sensor 21 to adjust the paper position. After the paper position is adjusted, the subsequent winding roller greatly eliminates the possibility of unevenness or misalignment at the winding edge, ensuring normal and reasonable winding.

[0028] like Figure 1 , Figure 2 and Figure 4As shown, specifically, the control roller 3 has several grooves 8, a rubber cylinder 7, and a limiting part 9 on the rubber cylinder 7, which is engaged in the groove 8. A positioning rod 16 is fixedly connected to the mounting shaft 4, and a through hole 17 adapted to the positioning rod 16 is provided on the pressure block 15. The rubber cylinder 7 provides good friction between itself and the paper, thereby better enabling the control roller 3 to swing and adjust the paper position, greatly reducing the likelihood of paper slippage. However, during long-term use, the rubber cylinder 7 on the surface of the control roller 3 is prone to wear. When replacing it, rotating the threaded rod 14 causes the pressure block 15 to move upward on the limiting rod 13, thereby canceling the limiting fixation of the pressure block 15 on the mounting shaft 4. The hydraulic cylinder 12 drives the movement of the pressure block 15 and the connecting seat 6, which facilitates the removal of the mounting shaft 4 and the control roller 3. Then, the rubber cylinder 7 can be separated from the control roller 3 and replaced with a new rubber cylinder 7. The new rubber cylinder 7 is fitted onto the control roller 3, so that the limiting part 9 slides into the slide groove 8. The rubber itself has elasticity, so the limiting part 9 slides and engages in the slide groove 8. It can stably install the rubber cylinder 7 on the control roller 3 through its own elasticity. At the same time, when the mounting shaft 4 is installed between the pressure block 15 and the connecting seat 6, when the pressure block 15 moves downward to clamp the mounting shaft 4, the positioning rod 16 passes through the through hole 17, thereby preventing the mounting shaft 4 from being unstable between the pressure block 15 and the connecting seat 6, that is, maintaining the stability of the control roller 3.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0030] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A paper control device for a gravure printing machine, comprising a bracket (1), wherein two mounting brackets (2) are fixedly mounted on the bracket (1), characterized in that... ； A control component for preventing paper deviation during the winding of the gravure printing machine is provided between the two mounting frames (2). The control component includes a control roller (3) located between the two mounting frames (2). Mounting shafts (4) are fixedly connected to both ends of the control roller (3). A movable block (5) for the control roller (3) to swing is provided on the top of the mounting frame (2). A connecting seat (6) for connecting the mounting shaft (4) is rotatably connected to the movable block (5).

2. The paper control device for a gravure printing machine according to claim 1, characterized in that, The control roller (3) is provided with a rubber cylinder (7), and the control roller (3) is provided with a plurality of sliding grooves (8). The rubber cylinder (7) is provided with a limiting part (9), and the limiting part (9) is engaged in the sliding groove (8).

3. The paper control device for a gravure printing machine according to claim 1, characterized in that, A guide rod (10) is fixedly installed on the mounting frame (2), and a movable block (5) is slidably connected to the guide rod (10). A connecting block (11) is fixedly connected to the movable block (5). A hydraulic cylinder (12) is fixedly installed on the mounting frame (2), and the hydraulic cylinder (12) is fixedly connected to the connecting block (11).

4. The paper control device for a gravure printing machine according to claim 1, characterized in that, The connecting seat (6) is rotatably connected to a limiting rod (13) and a threaded rod (14). The limiting rod (13) and the threaded rod (14) are provided with a pressure block (15) that cooperates with the connecting seat (6) to clamp the mounting shaft (4). The pressure block (15) is slidably connected to the limiting rod (13), and the pressure block (15) is threadedly connected to the threaded rod (14).

5. The paper control device for a gravure printing machine according to claim 4, characterized in that, A positioning rod (16) is fixedly connected to the mounting shaft (4), and a through hole (17) adapted to the positioning rod (16) is provided on the pressure block (15).

6. The paper control device for a gravure printing machine according to claim 1, characterized in that, A fixed plate (18) is fixedly installed on the bracket (1), a movable plate (19) is embedded on the fixed plate (18), an electric push rod (20) is fixedly installed on the movable plate (19), and a telephoto lens (21) is fixedly installed on the electric push rod (20).

7. The paper control device for a gravure printing machine according to claim 6, characterized in that, The movable plate (19) is provided with a plurality of screw holes (22) and positioning holes (23) evenly distributed. The screw holes (22) are provided with bolts (24), and the bolts (24) are threadedly connected to the fixed plate (18). The fixed plate (18) is provided with positioning pins (25) that are compatible with the positioning holes (23).

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