A paper correction device for a printing process

Abstract

The utility model provides a paper deviation rectifying device for printing process belongs to printing machine deviation rectifying technical field, including mounting bracket, the inside fixed mounting of mounting bracket has the deviation rectifying component that carries out deviation rectifying to paper, the top sliding installation of mounting bracket has the alignment component for the supplementary deviation rectifying, the utility model discloses the telescopic action of telescopic cylinder, drives telescopic link to remove, and further makes the positioning block push -link movement, because support and connecting rod fixed connection, in connecting rod movement process, push support and make its bottom's rotary rod rotate in the limiting hole in rectangular block, rotary rod rotates and drives support to rotate, this force drives support to take rotary rod as the axle, and the linear motion of telescopic cylinder is converted into the rotary motion of support, thereby, can realize to the small and accurate adjustment of deviation rectifying board angle to rectify the deviation of paper to the operation.

Description

Technical Field

[0001] This utility model relates to the field of printing press correction technology, and more specifically, to a paper correction device for printing processes. Background Technology

[0002] In the printing process, precise paper transport is one of the core prerequisites for ensuring print quality. Whether it is offset printing, flexographic printing or gravure printing, all mainstream printing methods require the paper to maintain a stable running trajectory on the conveyor belt or transport roller group to ensure that the relative position of the printed pattern and the paper size is precisely aligned.

[0003] A search revealed that Chinese patent CN223188552U, published in the prior art, discloses a "paper correction device for printing processes," comprising: a frame, with a conveyor belt connected to the frame, forming a gap between the frame and the conveyor belt; and a correction fixture, including a bracket fixedly connected to the frame, and a drive shaft and a driven shaft rotatably connected to the bracket. This invention, by setting a correction detection component on the mounting frame of the frame, includes a protective cylinder, a stationary contact, a moving contact, a telescopic rod, a base, and universal balls. The base and universal balls are located in the gap on one side of the conveyor belt. When the paper deviates from its course, they abut against the universal balls, causing the telescopic rod to move upward, closing the stationary and moving contacts. This controls the correction fixture to run rapidly, increasing the running speed and achieving paper correction. This solves the problem that current devices cannot automatically correct deviations, but the following drawbacks still exist: In production scenarios where paper alignment accuracy is extremely high, the inability to quickly reach a sufficient operating speed results in significant paper deviation during the alignment process, making timely and accurate alignment impossible.

[0004] Therefore, a paper alignment device for printing processes is proposed. Utility Model Content

[0005] The purpose of this invention is to address the problem that in current production scenarios where paper correction accuracy is extremely high, the inability to quickly reach a sufficient operating speed results in significant paper deviation during the correction process, making timely and accurate correction impossible. This invention provides a paper correction device for printing processes to solve the problems mentioned in the background section.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: The present invention is as follows: a paper correction device for printing process, including a mounting frame, a correction component for correcting paper deviation is fixedly installed on the inner side of the mounting frame, and an alignment component for assisting correction is slidably installed on the top of the mounting frame. The correction assembly includes a vertical plate fixedly installed inside the mounting frame, a telescopic cylinder hinged in the middle of the vertical plate, a telescopic rod connected to the other end of the telescopic cylinder, a positioning block fixedly installed at the other end of the telescopic rod, a connecting rod hinged inside the positioning block, a rectangular block fixedly connected to the bottom of the mounting frame, a rotating rod penetrating through the middle of the rectangular block, and a bracket fixedly connected to the top of the rotating rod.

[0007] As a preferred technical solution of this utility model, the alignment component includes a second motor fixedly connected to one side of the mounting frame, a lead screw is mounted on the output end of the second motor, a movable frame is slidably mounted on the lead screw, an electric push rod is fixedly mounted on one side of the movable frame, and an alignment plate is fixedly mounted on the other end of the electric push rod.

[0008] As a preferred technical solution of this utility model, a correction plate is fixedly installed on the top of the bracket, a first motor is fixedly installed on one side of the correction plate, a first rotating shaft is installed at the output end of the first motor, a second rotating shaft is rotatably installed on the inner side of the correction plate, and a belt is tensioned between the first rotating shaft and the second rotating shaft.

[0009] As a preferred technical solution of this utility model, the telescopic cylinder is located on one side of the bracket, and the other end of the connecting rod is fixedly connected to one side of the bracket.

[0010] As a preferred technical solution of this utility model, a conveyor belt is provided on the outer side of the second rotating shaft, and the moving frame consists of two sets arranged symmetrically.

[0011] As a preferred technical solution of this utility model, the top of the mounting bracket is provided with a sliding groove, the lead screw is located in the sliding groove, and the movable bracket slides through the thread inside the slider that matches the lead screw.

[0012] As a preferred technical solution of this utility model, the correction plate and the bracket are fixedly connected by bolts, and the alignment plate is located at the top of the conveyor belt.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By using the set correction components, the angle of the correction plate can be adjusted slightly and precisely, thereby completing the paper correction operation. Specifically, the telescopic cylinder moves the telescopic rod, which in turn causes the positioning block to push the connecting rod. Since the bracket is fixedly connected to the connecting rod, during the movement of the connecting rod, it pushes the bracket so that the rotating rod at its bottom rotates within the limiting hole in the rectangular block. When the rotating rod rotates, it drives the bracket to rotate. This force drives the bracket to rotate around the rotating rod as the axis, converting the linear motion of the telescopic cylinder into the rotational motion of the bracket. Thus, the angle of the correction plate can be adjusted slightly and precisely, thereby completing the paper correction operation. 2. The alignment component enables paper alignment, ensuring accurate paper positioning in subsequent printing processes. Specifically, when the second motor is started, its output drives the lead screw to rotate. Since the moving frame is slidably mounted on the lead screw, it moves linearly along the lead screw under the rotation of the lead screw. The electric push rod on one side of the moving frame can extend and retract. When the electric push rod extends and retracts, it drives the alignment plate fixedly mounted on its other end to move. By controlling the position of the moving frame with the second motor and the extension and retraction distance of the alignment plate with the electric push rod, the alignment plate can accurately reach the required position. Attached Figure Description

[0014] Figure 1 One of the three-dimensional structural schematic diagrams of the paper alignment device for printing process provided by this utility model; Figure 2 A second three-dimensional structural schematic diagram of the paper alignment device for printing process provided by this utility model; Figure 3 The third three-dimensional structural schematic diagram of the paper alignment device for printing process provided by this utility model; Figure 4 One of the partial structural schematic diagrams of the paper alignment device for printing process provided by this utility model; Figure 5 This is the second partial structural schematic diagram of the paper alignment device for printing processes provided by this utility model.

[0015] The diagram shows: 1. Mounting frame; 2. Correction assembly; 201. Vertical plate; 202. Telescopic cylinder; 203. Telescopic rod; 204. Positioning block; 205. Connecting rod; 206. Rectangular block; 207. Rotating rod; 208. Bracket; 2081. Correction plate; 2082. First motor; 2083. First rotating shaft; 2084. Second rotating shaft; 2085. Belt; 2086. Conveyor belt; 3. Alignment assembly; 301. Second motor; 302. Lead screw; 303. Moving frame; 304. Electric push rod; 305. Alignment plate; 3051. Slide groove. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0017] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0018] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] like Figure 1 , Figures 3-5 As shown, this embodiment proposes a paper correction device for printing process, including a mounting frame 1, a correction component 2 for correcting paper deviation is fixedly installed on the inner side of the mounting frame 1, and an alignment component 3 for assisting correction is slidably installed on the top of the mounting frame 1. The correction assembly 2 includes a vertical plate 201 fixedly installed inside the mounting frame 1. A telescopic cylinder 202 is hinged to the middle of the vertical plate 201. A telescopic rod 203 is connected to the other end of the telescopic cylinder 202. A positioning block 204 is fixedly installed at the other end of the telescopic rod 203. A connecting rod 205 is hinged to the inner side of the positioning block 204. A rectangular block 206 is fixedly connected to the bottom of the mounting frame 1. A rotating rod 207 is provided through the middle of the rectangular block 206. A bracket 208 is fixedly connected to the top of the rotating rod 207. The telescopic cylinder 202 extends and retracts, causing the telescopic rod 203 to move. This, in turn, causes the positioning block 204 to push the connecting rod 205 to move. Since the bracket 208 is fixedly connected to the connecting rod 205, during the movement of the connecting rod 205, it pushes the bracket 208 so that the rotating rod 207 at its bottom rotates within the limiting hole in the rectangular block 206. When the rotating rod 207 rotates, it drives the bracket 208 to rotate. This force drives the bracket 208 to rotate around the rotating rod 207 as its axis, converting the linear motion of the telescopic cylinder 202 into the rotational motion of the bracket 208. Thus, it is possible to make small and precise adjustments to the angle of the correction plate 2081, thereby completing the paper correction operation.

[0021] like Figure 1 , Figure 2 and Figure 4As shown, the alignment assembly 3 includes a second motor 301 fixedly connected to one side of the mounting bracket 1. A lead screw 302 is fitted to the output end of the second motor 301. A movable frame 303 is slidably mounted on the lead screw 302. An electric push rod 304 is fixedly mounted on one side of the movable frame 303. An alignment plate 305 is fixedly mounted on the other end of the electric push rod 304. When the second motor 301 is started, its output end drives the lead screw 302 to rotate. Since the moving frame 303 is slidably mounted on the lead screw 302, under the rotation of the lead screw 302, the moving frame 303 will move linearly along the lead screw 302. The electric push rod 304 on one side of the moving frame 303 can be extended and retracted. When the electric push rod 304 extends and retracts, it will drive the alignment plate 305 fixedly mounted on its other end to move. By controlling the position of the moving frame 303 through the second motor 301 and controlling the extension and retraction distance of the alignment plate 305 through the electric push rod 304, the alignment plate 305 can be accurately positioned to the required position. While the moving frame 303 moves, it synchronously drives the moving frame on the other side to move along the guide rod through the connecting rod, so that the alignment plates on both sides can synchronously perform the paper alignment operation, ensuring the accurate position of the paper in the subsequent printing process.

[0022] like Figure 2 and Figure 3 As shown, a correction plate 2081 is fixedly installed on the top of the bracket 208. A first motor 2082 is fixedly installed on one side of the correction plate 2081. A first rotating shaft 2083 is installed at the output end of the first motor 2082. A second rotating shaft 2084 is rotatably installed on the inner side of the correction plate 2081. A belt 2085 is tensioned between the first rotating shaft 2083 and the second rotating shaft 2084. The first motor 2082 serves as a power source, driving the first rotating shaft 2083 to rotate. The power is transmitted to the second rotating shaft 2084 through the belt 2085, thereby causing the conveyor belt 2086, which is tensioned on the two rotating shafts, to run continuously, realizing the conveying of paper. Multiple sets of support rods in the middle of the correction plate 2081 are used to stably support the conveyor belt. The second rotating shaft 2084 is distributed on both sides of the multiple sets of support rods. The belt 2085 transmission ensures that the conveyor belt 2086 always runs smoothly on the top of the support rods, avoiding paper deviation caused by vibration and creating good conditions for correction.

[0023] like Figures 2-5 As shown, the telescopic cylinder 202 is located on one side of the bracket 208, and the other end of the connecting rod 205 is fixedly connected to one side of the bracket 208. The telescopic cylinder 202 is securely connected to the bracket 208 via the connecting rod 205. During the paper correction process, the telescopic cylinder 202 can extend and retract according to actual needs. When the paper deviates, the telescopic cylinder 202 extends and retracts, causing the correction plate 2081 to rotate, which, together with the alignment plate 305, further adjusts the position of the paper, ensuring that the paper is accurately on the correct conveying trajectory, improving the accuracy and stability of paper correction, and effectively ensuring the smooth progress of subsequent printing processes.

[0024] like Figure 2 and Figure 3 As shown, a conveyor belt 2086 is provided on the outer side of the second rotating shaft 2084, and two sets of movable frames 303 are arranged symmetrically. During the paper conveying process, if the paper size changes or the paper position needs to be finely adjusted, the movable frame 303 can make precise displacement under the guidance of the slide rail. A sensing device is installed on the alignment plate 305. This sensing device can monitor the edge position of the paper in real time and feed the position information back to the control system. When the sensing device detects that the edge of the paper deviates from the preset position, the control system will quickly issue a command to drive the electric push rod 304 to extend and retract, thereby adjusting the position of the paper and ensuring that the paper always stays on the correct conveying path.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, the top of the mounting bracket 1 has a sliding groove 3051, the lead screw 302 is located in the sliding groove 3051, and the movable bracket 303 slides through the thread inside the slider that matches the lead screw 302. The movable bracket 303 moves linearly in the sliding groove 3051 along the axial direction of the lead screw 302, which can precisely control the moving distance of the movable bracket 303. By adjusting the number of rotations and direction of the lead screw 302, the movable bracket 303 can be accurately positioned at different positions in the sliding groove 3051, thus providing an accurate basis for subsequent correction actions.

[0026] like Figure 2 and Figure 3 As shown, the correction plate 2081 is fixedly connected to the bracket 208 by bolts, and the alignment plate 305 is located at the top of the conveyor belt 2086. When the paper is conveyed on the conveyor belt 2086, the alignment plate 305 located at the top of the conveyor belt 2086 can accurately position the edge of the paper, ensuring that the paper is in a relatively correct position before entering the correction area. In this way, the correction plate 2081 can more effectively fine-tune the paper, further improving the accuracy of paper correction and providing strong support for subsequent printing processes.

[0027] Specifically, in use, the paper alignment device for printing processes works as follows: During paper feeding, if there are changes in paper specifications or a need for fine-tuning of the paper position, the moving frame 303 can precisely shift under the guidance of the slide rail. A sensor is installed on the alignment plate 305, which can monitor the edge position of the paper in real time and feed the position information back to the control system. When the sensor detects that the paper edge deviates from the preset position, the control system quickly issues a command to drive the electric push rod 304 to extend or retract, thereby adjusting the paper position and ensuring that the paper always stays on the correct feeding path. The second motor 301 is started, and its output end drives the lead screw 302 to rotate. Since the moving frame 303 is slidably mounted on the lead screw 302, under the rotation of the lead screw 302, the moving frame 303 will move linearly along the lead screw 302. The electric push rod 304 on one side of the moving frame 303 can further extend or retract. When the electric push rod 304 extends or retracts, it will drive the alignment plate fixedly mounted on its other end. The 305 is moved, and the position of the moving frame 303 is controlled by the second motor 301 and the extension distance of the alignment plate 305 is controlled by the electric push rod 304. This allows the alignment plate 305 to accurately reach the required position, thereby realizing the paper alignment operation and ensuring the accurate position of the paper in the subsequent printing process. When a correction operation is required, the extension and retraction of the telescopic cylinder 202 drives the telescopic rod 203 to move, which in turn causes the positioning block 204 to push the connecting rod 205 to move. Since the bracket 208 is fixedly connected to the connecting rod 205, during the movement of the connecting rod 205, it pushes the bracket 208 so that the rotating rod 207 at its bottom rotates in the limiting hole in the rectangular block 206. When the rotating rod 207 rotates, it drives the bracket 208 to rotate. This force drives the bracket 208 to use the rotating rod 207 as the axis, converting the linear motion of the telescopic cylinder 202 into the rotational motion of the bracket 208. Thus, the angle of the correction plate 2081 can be adjusted slightly and precisely, thereby completing the paper correction operation.

[0028] All technical features in this embodiment can be freely combined according to actual needs.

[0029] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A paper alignment device for printing processes, comprising a mounting frame (1), characterized in that, The mounting frame (1) is fixedly installed with a paper correction component (2) for correcting the paper's deviation, and the mounting frame (1) is slidably installed with an alignment component (3) for assisting the correction. The correction component (2) includes a vertical plate (201) fixedly installed inside the mounting frame (1), a telescopic cylinder (202) is hinged in the middle of the vertical plate (201), a telescopic rod (203) is connected to the other end of the telescopic cylinder (202), a positioning block (204) is fixedly installed at the other end of the telescopic rod (203), a connecting rod (205) is hinged inside the positioning block (204), a rectangular block (206) is fixedly connected to the bottom of the mounting frame (1), a rotating rod (207) is provided through the middle of the rectangular block (206), and a bracket (208) is fixedly connected to the top of the rotating rod (207).

2. The paper alignment device for printing process according to claim 1, characterized in that, The alignment assembly (3) includes a second motor (301) fixedly connected to one side of the mounting bracket (1). A lead screw (302) is installed at the output end of the second motor (301). A movable frame (303) is slidably installed on the lead screw (302). An electric push rod (304) is fixedly installed on one side of the movable frame (303). An alignment plate (305) is fixedly installed at the other end of the electric push rod (304).

3. A paper alignment device for printing process according to claim 2, characterized in that, A correction plate (2081) is fixedly installed on the top of the bracket (208). A first motor (2082) is fixedly installed on one side of the correction plate (2081). A first rotating shaft (2083) is installed at the output end of the first motor (2082). A second rotating shaft (2084) is rotatably installed on the inner side of the correction plate (2081). A belt (2085) is tensioned between the first rotating shaft (2083) and the second rotating shaft (2084).

4. A paper alignment device for printing process according to claim 1, characterized in that, The telescopic cylinder (202) is located on one side of the bracket (208), and the other end of the connecting rod (205) is fixedly connected to one side of the bracket (208).

5. A paper alignment device for printing process according to claim 3, characterized in that, A conveyor belt (2086) is provided on the outer side of the second rotating shaft (2084), and the moving frame (303) consists of two sets arranged symmetrically.

6. A paper alignment device for printing process according to claim 2, characterized in that, The mounting bracket (1) has a groove (3051) on its top, the lead screw (302) is located in the groove (3051), and the moving bracket (303) slides through the thread inside the slider that matches the lead screw (302).

7. A paper alignment device for printing process according to claim 5, characterized in that, The correction plate (2081) is fixedly connected to the bracket (208) by bolts, and the alignment plate (305) is located at the top of the conveyor belt (2086).

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