A non-stop observation device for a printing press

Abstract

This invention proposes a non-stop observation device for a printing press, comprising a support frame, a movable roller frame, a discharge traction pressing mechanism, a first traction roller, a movable roller, and a take-up roller. After the discharge traction pressing mechanism presses the printing paper, the take-up roller stops winding. At this point, the printing quality can be judged by observing the state of the printing paper from the take-up roller to the traction pressing mechanism. During this process, the movable roller frame and the first traction roller tension the incoming printing paper through their separate movements, thereby achieving paper storage, ensuring printing continuity, and thus enabling non-stop observation during the printing process, improving printing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of printing equipment technology, and mainly relates to a non-stop observation device for printing machines. Background Technology

[0002] In digital printing presses, before the printed material enters the rewinding roll, it is necessary to check the printing effect of the material to observe whether there are any defects in the printed product and prevent batch scrap. However, in most cases, the equipment usually runs at high speed to improve efficiency, which causes the material to be wound up too quickly when the rewinding roller is winding up, making it impossible to see the printing situation clearly. At this time, it is necessary to stop the machine or slow down the printing speed to observe the finished product. This method is time-consuming and affects printing efficiency. Utility Model Content

[0003] The purpose of this invention is to design a non-stop observation device for a printing press to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: It includes a support frame, a movable roller frame slidably connected to the support frame and capable of sliding up and down, and a discharge traction pressing mechanism installed at the end of the support frame. The support frame is provided with a plurality of first traction rollers, the movable roller frame is provided with a plurality of movable rollers, and a take-up roller is provided at the end of the support frame near the discharge traction pressing mechanism. After the printing paper is alternately wound around the plurality of first traction rollers and the plurality of movable rollers, it is wound onto the take-up roller by the discharge traction pressing mechanism. After the discharge traction pressing mechanism presses the printing paper, the movable roller frame moves away from the first traction rollers while simultaneously tensioning the incoming printing paper.

[0005] Furthermore, the support frame is provided with a retention observation section, which includes a first transition roller, a tension roller, and two horizontally arranged observation traction rollers. The first transition roller is located below the observation traction roller, and the tension roller is located below the first transition roller. Both the tension roller and the first transition roller are located on the side close to the discharge traction pressing mechanism. After the printing paper comes out of the moving roller frame, it is sequentially coiled around the first transition roller, the observation traction roller away from the discharge traction pressing mechanism, the observation traction roller close to the discharge traction pressing mechanism, the tension roller, and the discharge traction pressing mechanism.

[0006] Furthermore, the movable roller frame is provided with several movable roller groups, each group of movable rollers consists of two vertically distributed movable rollers, and a second traction roller is provided below each of the first traction rollers. The printing paper is wound in the outer layer by the first traction roller and the movable roller located above, and the printing paper is wound in the inner layer by the second traction roller and the movable roller located below.

[0007] Furthermore, the support frame is also equipped with a feeding traction and pressing mechanism, through which the printed paper enters the moving roller frame after printing.

[0008] Furthermore, the feeding traction pressing mechanism and the discharging traction pressing mechanism have the same structure. The discharging traction pressing mechanism includes a pressing roller that can be adjusted and fixed at an angle and a bottom roller driven by a motor. The printing paper is located between the bottom roller and the pressing roller. When the pressing roller presses the printing paper, the winding roller stops rotating.

[0009] Furthermore, the movable roller frame is provided with a second transition roller, and the support frame is provided with a third transition roller. The second transition roller is located below the feeding traction pressing mechanism and is located between the tension roller and the first transition roller. After the printing paper is wound out from the inner layer, it is wound sequentially on the second transition roller, the third transition roller and the first transition roller.

[0010] Furthermore, the support frame is provided with a timing belt assembly, and the timing belt of the timing belt assembly is fixedly connected to the movable roller frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: After the paper is pressed by the feeding traction pressing mechanism, the winding roller will stop winding; at this time, the printing quality can be judged by observing the state of the printing paper from the winding roller to the feeding pressing mechanism; during this process, the moving roller frame and the first traction roller tension the incoming printing paper by moving separately from each other, thereby realizing the storage of printing paper, ensuring the continuity of printing, and thus realizing non-stop observation during the printing process, improving printing efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] The components are: 1. Feeding traction and paper pressing mechanism; 2. Second transition roller; 3. First traction roller; 4. Observation traction roller; 5. First transition roller; 6. Pressing roller; 7. Bottom roller; 8. Tensioning roller; 9. Moving roller frame; 10. Synchronous belt assembly; 11. Support frame; 12. Moving roller; 13. Second traction roller; 14. Third transition roller; 15. Take-up roller. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] Example: Please refer to Figure 1 A non-stop observation device for a printing press includes a support frame 11, a movable roller frame 9 slidably connected to the support frame 11 and capable of sliding up and down, and a discharge traction and pressing mechanism installed at the end of the support frame 11. The support frame 11 is provided with a plurality of first traction rollers 3, and the movable roller frame 9 is provided with a plurality of movable rollers 12. A take-up roller 15 is provided at the end of the support frame 11 near the discharge traction and pressing mechanism. After the printing paper is alternately wound around the plurality of first traction rollers 3 and the plurality of movable rollers 12, it is wound onto the take-up roller 15 by the discharge traction and pressing mechanism. After the discharge traction and pressing mechanism presses the printing paper, the take-up roller 15 stops winding. The printing paper on the winding roller 15 and the traction pressing mechanism is in a stationary state, which can be used to observe the printing quality of the printing paper. During this process, the moving roller frame 9 moves away from the first traction roller 3 while tensioning the incoming printing paper, thereby storing the printing paper and ensuring the continuity of printing. After the observation is completed, the discharge traction pressing mechanism will stop pressing the printing paper and start the winding roller 15 to realize the normal winding of the printing paper. At this time, when the winding roller 15 is winding, the moving roller 12 moves in the opposite direction to release the stored printing paper, which facilitates the subsequent re-tensioning and storage of the printing paper and facilitates the subsequent observation of the printing paper.

[0017] In this embodiment, the support frame 11 is provided with a retention observation section, through which an observer can observe the printing quality of the printing paper. The retention observation section includes a first transition roller 5, a tension roller 8, and two horizontally arranged observation traction rollers 4. The first transition roller 5 is located below the first traction roller 3, and the tension roller 8 is located below the first transition roller 5. Both the tension roller 8 and the first transition roller 5 are located on the side closer to the discharge traction pressing mechanism. After the printing paper comes out of the moving roller frame 9, it is sequentially coiled around the first transition roller 5, the observation traction roller 4 away from the discharge traction pressing mechanism, and the observation traction roller 4 close to the discharge traction pressing mechanism. On the roller 4, tension roller 8, and discharge traction pressing mechanism, two horizontally arranged observation traction rollers 4 allow the observer to directly observe the horizontal state of the printing paper. In addition, the observation width can be controlled by adjusting the distance between the two observation traction rollers 4, thereby increasing the observation range and accuracy. The tension roller 8 increases the tension of the printing paper when it enters the discharge traction pressing mechanism, thereby improving the traction quality of the printing paper and preventing the printing paper from skewing. The first transition roller 5 is used to change the direction of movement of the printing paper, thereby realizing the transition between the moving roller frame 9 and the observation traction roller 4.

[0018] In this embodiment, the movable roller frame 9 is provided with several sets of movable rollers 12. Each set of movable rollers 12 consists of two vertically distributed movable rollers 12. A second traction roller 13 is provided below each first traction roller 3. The printing paper is wound around the outer layer by the first traction roller 3 and the upper movable roller 12, and the printing paper is wound around the inner layer by the second traction roller 13 and the lower movable roller 12. By winding the inner and outer layers, the amount of printing paper stored by the movable roller frame 9 per unit moving distance is increased, thereby increasing the observation time. In addition, the movable roller frame 9 is provided with a second transition roller 2, and the support frame 11 is provided with a third transition roller 14. The second transition roller 2 is located below the feeding traction pressing mechanism 1 and is located between the tension roller 8 and the first transition roller 5. After the printing paper is wound out from the inner layer, it is wound around the second transition roller 2, the third transition roller 14 and the first transition roller 5 in sequence, thereby realizing that the movable roller frame 9 can stably perform inner and outer layer winding during the movement, thereby achieving stable material storage.

[0019] The support frame 11 is also equipped with a feeding traction and pressing mechanism 1. After printing, the printed paper enters the moving roller frame 9 through the feeding traction and pressing mechanism 1. The feeding traction and pressing mechanism 1 and the discharging traction and pressing mechanism have the same structure. The discharging traction and pressing mechanism includes a pressing roller 6 that can be angle-adjusted and fixed, and a bottom roller 7 driven by a motor. The printed paper is located between the bottom roller 7 and the pressing roller 6. When the pressing roller 6 presses the printed paper, the winding roller 15 stops rotating. The structure for angle adjustment and fixing of the pressing roller 6 can be adopted as follows: The common structure, such as the cooperation between the rotating rod and the cylinder, will not be elaborated further. The pressing roller 6 in the paper pressing mechanism presses the printing paper, ensuring the stability of the printing paper in the observation section, which is convenient for observing the printing quality. The support frame 11 is equipped with a synchronous belt assembly 10. The synchronous belt of the synchronous belt assembly 10 is fixedly connected to the moving roller frame 9, thereby realizing the up and down movement of the moving roller frame 9. The sliding connection between the moving roller frame 9 and the support frame 11 can be in the form of a slider rail connection.

[0020] Working principle: When the pressing roller 6 in the paper feeding traction mechanism presses the printing paper, the synchronous belt assembly 10 starts, and the take-up roller 15 stops winding. At this time, the synchronous belt drives the moving roller frame 9 to move downward. The moving roller frame 9 moves away from the first traction roller 3 and tensions the incoming printing paper, thereby storing the printing paper and ensuring the continuity of printing. During this process, the printing paper between the two horizontal traction rollers is in a stationary state, and the printing quality of the printing paper at this point can be observed. After the observation is completed, the pressing roller 6 stops pressing the printing paper, and the take-up roller 15 starts, thereby realizing the normal winding of the printing paper. At this time, when the take-up roller 15 is winding, the moving roller frame 9 moves in the opposite direction under the action of the synchronous belt assembly 10, thereby releasing the stored printing paper, which facilitates the subsequent re-tensioning and storage of the printing paper and facilitates the subsequent observation of the printing paper. Therefore, this invention eliminates the problem that in the past, it was necessary to stop the machine or slow down the printing speed to observe the finished product, which was time-consuming and affected the printing efficiency.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A non-stop observation device for a printing press, characterized in that, The device includes a support frame (11), a movable roller frame (9) slidably connected to the support frame (11) and capable of sliding up and down, and a discharge traction pressing mechanism installed at the end of the support frame (11). The support frame (11) is provided with a plurality of first traction rollers (3), and the movable roller frame (9) is provided with a plurality of movable rollers (12). A take-up roller (15) is provided at the end of the support frame (11) near the discharge traction pressing mechanism. After the printing paper is alternately wound around a plurality of first traction rollers (3) and a plurality of movable rollers (12), it is wound around the take-up roller (15) by the discharge traction pressing mechanism. After the discharge traction pressing mechanism presses the printing paper, the movable roller frame (9) moves away from the first traction rollers (3) while tensioning the incoming printing paper.

2. The non-stop observation device for a printing press according to claim 1, characterized in that, The support frame (11) is provided with a retention observation section, which includes a first transition roller (5), a tension roller (8) and two horizontally arranged observation traction rollers (4). The first transition roller (5) is located below the observation traction roller (4), and the tension roller (8) is located below the first transition roller (5). Both the tension roller (8) and the first transition roller (5) are located on the side close to the discharge traction pressing mechanism. After the printing paper comes out of the moving roller frame (9), it is sequentially coiled around the first transition roller (5), the observation traction roller (4) away from the discharge traction pressing mechanism, the observation traction roller (4) close to the discharge traction pressing mechanism, the tension roller (8) and the discharge traction pressing mechanism.

3. The non-stop observation device for a printing press according to claim 2, characterized in that, The movable roller frame (9) is provided with a number of movable roller (12) groups. Each movable roller (12) group consists of two vertically distributed movable rollers (12). A second traction roller (13) is provided below each first traction roller (3). The printing paper is wound on the outer layer by the first traction roller (3) and the movable roller (12) located above. The printing paper is wound on the inner layer by the second traction roller (13) and the movable roller (12) located below.

4. The non-stop observation device for a printing press according to claim 3, characterized in that, The support frame (11) is also provided with a feeding traction and pressing paper mechanism (1). After printing, the printed paper enters the moving roller frame (9) through the feeding traction and pressing paper mechanism (1).

5. The non-stop observation device for a printing press according to claim 4, characterized in that, The feeding traction pressing mechanism (1) and the discharging traction pressing mechanism have the same structure. The discharging traction pressing mechanism includes a pressing roller (6) that can achieve angle adjustment and fixation and a bottom roller (7) driven by a motor. The printing paper is located between the bottom roller (7) and the pressing roller (6). When the pressing roller (6) presses the printing paper, the winding roller (15) stops rotating.

6. The non-stop observation device for a printing press according to claim 4, characterized in that, The movable roller frame (9) is provided with a second transition roller (2), and the support frame (11) is provided with a third transition roller (14). The second transition roller (2) is located below the feeding traction pressing mechanism (1) and is located between the tension roller (8) and the first transition roller (5). After the printing paper is wound out from the inner layer, it is wound sequentially on the second transition roller (2), the third transition roller (14) and the first transition roller (5).

7. The non-stop observation device for a printing press according to claim 1, characterized in that, The support frame (11) is provided with a synchronous belt assembly (10), and the synchronous belt of the synchronous belt assembly (10) is fixedly connected to the moving roller frame (9).

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