A web digital printing tension closed-loop control device

Abstract

The utility model relates to a kind of reel digital printing tension closed-loop control device, belong to digital printing accessory technical field, including bottom plate, the upper surface both sides of bottom plate are fixedly installed with water tank, the upper end of water tank is inserted with guide rod, buffer roller is rotatably installed between guide rod, the vertical fixed mounting of water tank opposite side is with guide rail, the inside of guide rail is slidably connected with sliding block, detection roller is rotatably installed between sliding block, distance monitoring sensor is installed in the inside lower end of guide rail, guide roller is rotatably installed between water tank, input pair roller is installed in the upper end side of water tank, the height of buffer roller is self-adapting according to tension change by adopting the buoyancy of float, slight tension is automatically regulated, and when tension changes greatly, the rotating speed of input pair roller is controlled quickly by distance monitoring sensor, reach the effect of tension closed-loop control, avoid paper tear or relaxation phenomenon due to tension change.

Description

Technical Field

[0001] This utility model relates to the field of digital printing accessories technology, and in particular to a tension closed-loop control device for digital printing of roll paper. Background Technology

[0002] Digital printing is the digitization of printing technology. It broadly refers to the partial or complete digitization of the entire process. Examples include laser typesetting, remote plate transfer, digital proofing, computer-to-plate (CTP), digital workflows, and printing plant ERP systems. Digital printing primarily uses roll paper for long-form printing. During printing, a stable paper feed is crucial, and paper tension is a significant factor affecting print quality. While tension controllers are commonly used, they are inconvenient for slight tension changes, leading to paper tension or slack. Furthermore, they lack the ability to quickly close the loop when dealing with larger tension variations, making them inconvenient to use. Utility Model Content

[0003] To overcome the technical defects of the existing technology, this utility model provides a tension closed-loop control device for digital printing of roll paper, which has the effect of adapting to slight tension and responding quickly to larger tension, thus forming a tension closed-loop control effect.

[0004] The technical solution adopted by this utility model is: a closed-loop tension control device for digital printing of roll paper, including a base plate, on both sides of the upper surface of the base plate, water tanks are fixedly installed, guide rods are inserted into the upper end of the water tanks, buffer rollers are rotatably installed between the guide rods, guide rails are vertically fixedly installed on opposite sides of the water tanks, sliders are slidably engaged inside the guide rails, detection rollers are rotatably installed between the sliders, and a distance monitoring sensor is fixedly installed inside the guide rails below the sliders. Guide rollers are rotatably installed between the water tanks on one side of the detection rollers, and an input roller is installed on one side of the upper end of the water tanks. In use, one end of the paper on the roll paper passes sequentially through the input roller, the detection roller, and... The buffer roller and the guide roller, the input roller pair convey the paper, the detection roller detects the paper tension, the buffer roller adapts to slight tension, the guide roller adjusts the paper output direction, and when the detection roller detects the paper tension, the slider slides up and down inside the guide rail, causing a change in the distance between the distance monitoring sensor and the slider. When the change is large, the tension signal is transmitted to an external controller, which adjusts the conveying speed of the input roller pair to achieve a closed-loop tension control effect. In addition, during slight tension adjustment, the buffer roller floats up and down at the upper end of the water tank, using buoyancy to adapt to slight tension.

[0005] Preferably, a guide hole is provided at the middle of the upper end of the water tank, and the guide rod extends through the guide hole into the interior of the water tank. An observation glass is embedded in one side of the water tank. The observation glass facilitates observation of the liquid level inside the water tank, and the guide hole improves the guidance of the guide rod during movement.

[0006] Preferably, the lower end of the guide rod is fixedly installed with a perforated float inside the water tank. The float floats on the liquid injected inside the water tank. When the tension changes, the depth of the float sinking into the liquid inside the water tank changes, causing the buoyancy to fluctuate. This causes the buffer roller to float up and down with the buoyancy, thus adaptively adjusting the slight tension on the paper.

[0007] Preferably, a guide rod is vertically fixed inside the guide rail, and the slider is sleeved on the guide rod. The guide rod improves the stability of the slider when it moves up and down.

[0008] Preferably, a spring is fixedly installed at the upper end of the guide rail, the spring is sleeved on the guide rod, and the lower end of the spring is fixedly connected to the slider. The spring facilitates the provision of resistance to the slider when it is raised and lowered, adapts and adjusts the tension of the paper, and avoids paper tearing.

[0009] Preferably, an installation plate is fixedly installed on one side of the upper outer end of the water tank, and the input rollers are rotatably mounted on the installation plate, which facilitates the installation of the input rollers.

[0010] Preferably, a drive motor is fixedly mounted on one side of the mounting plate, and the output end of the drive motor is fixedly connected to one of the input rollers, so as to drive the input rollers and enable the input rollers to transport the paper.

[0011] Preferably, the input rollers consist of two input rollers installed vertically, and the two input rollers are linked by gears so that the two input rollers rotate synchronously and clamp and convey the paper, thereby improving the stability of paper conveying.

[0012] The beneficial effects of this utility model are: by using the buoyancy of the float to adaptively adjust the vertical height of the buffer roller according to the tension change, the effect of automatic tension adjustment is achieved. Furthermore, by using a distance monitoring sensor, when the tension changes significantly, the position of the detection roller changes, which facilitates rapid control of the rotation speed of the input roller, achieving the effect of tension closed-loop control. This avoids tearing or loosening of the paper due to tension changes and improves the stability of digital printing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention in use.

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 3 This is a structural diagram of the base plate position in this utility model.

[0016] Figure 4 This is a structural schematic diagram of the position of the buffer roller in this utility model.

[0017] Figure 5 This is a structural schematic diagram of the position of the detection roller in this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Water tank; 3. Guide rod; 4. Buffer roller; 5. Guide rail; 6. Slider; 7. Detection roller; 8. Distance monitoring sensor; 9. Guide roller; 10. Input roller; 11. Guide hole; 12. Observation glass; 13. Float; 14. Guide rod; 15. Spring; 16. Mounting plate; 17. Drive motor. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figures 1-5 As shown, this embodiment provides a closed-loop tension control device for digital printing of roll paper, including a base plate 1. In use, the entire device is installed at the paper feed end of an external digital printing equipment via the base plate 1. Water tanks 2 are fixedly installed on both sides of the upper surface of the base plate 1. Guide rods 3 are inserted into the upper end of the water tanks 2. Buffer rollers 4 are rotatably installed between the guide rods 3. Guide rails 5 are vertically fixedly installed on opposite sides of the water tanks 2. Sliding blocks 6 are slidably engaged inside the guide rails 5. Detection rollers 7 are rotatably installed between the sliding blocks 6. A distance monitoring sensor 8 is fixedly installed inside the guide rails 5 below the sliding blocks 6. Guide rollers 9 are rotatably installed between the water tanks 2 on the side of the detection roller 7. An input roller 10 is installed on the upper side of the water tank 2. In use, one end of the paper on the roll paper passes through the input roller 10 in sequence. The system includes a roller 10, a detection roller 7, a buffer roller 4, and a guide roller 9. The input roller 10 conveys the paper, the detection roller 7 detects the paper tension, the buffer roller 4 adapts to slight tension, and the guide roller 9 adjusts the paper output direction. When the detection roller 7 detects the paper tension, the slider 6 slides up and down inside the guide rail 5, causing a change in the distance between the distance monitoring sensor 8 and the slider 6. When the change is large, the tension signal is transmitted to an external controller, which adjusts the conveying speed of the input roller 10 to achieve closed-loop tension control. During slight tension adjustment, the buffer roller 4 floats up and down at the top of the water tank 2, using buoyancy to adapt to slight tension and improve the stability of the paper during conveying.

[0021] As a technical optimization solution of this utility model, specifically as follows: Figure 3 and Figure 4 As shown, a guide hole 11 is provided at the middle of the upper end of the water tank 2. The guide rod 3 extends through the guide hole 11 into the interior of the water tank 2. An observation glass 12 is installed on one side of the water tank 2. The observation glass 12 facilitates the observation of the liquid level inside the water tank 2. The guide hole 11 ensures that the guide rod 3 can only move vertically. A perforated float 13 is fixedly installed at the lower end of the guide rod 3 inside the water tank 2. The float 13 floats on the liquid injected into the water tank 2. When the tension changes, the volume of the float 13 sinking into the liquid inside the water tank 2 changes, causing the buoyancy to fluctuate. This causes the buffer roller 4 to float up and down with the buoyancy, adaptively adjusting the slight tension on the paper.

[0022] As a technical optimization solution of this utility model, specifically as follows: Figure 5As shown, a guide rod 14 is vertically fixed inside the guide rail 5, and the slider 6 is sleeved on the guide rod 14. The guide rod 14 improves the stability of the slider 6 when it moves up and down, and prevents it from deviating. A spring 15 is fixedly installed at the upper end inside the guide rail 5. The spring 15 is sleeved on the guide rod 14, and the lower end of the spring 15 is fixedly connected to the slider 6. The spring 15 provides resistance to the slider 6 when it moves up and down, adapts to the tension of the paper, and prevents the paper from tearing due to increased tension.

[0023] As a technical optimization solution of this utility model, specifically as follows: Figure 3 As shown, an installation plate 16 is fixedly installed on one side of the upper outer surface of the water tank 2. The input rollers 10 are rotatably mounted on the installation plate 16. The installation plate 16 facilitates the installation of the input rollers 10 and the conveying of paper. A drive motor 17 is fixedly installed on one side of the installation plate 16, and the output end of the drive motor 17 is fixedly connected to one of the input rollers 10, which facilitates the driving of the input rollers 10 and enables them to convey paper. The drive motor 17 is an adjustable speed servo motor. The input rollers 10 consist of two input rollers installed vertically, and the two input rollers are linked by a gear (not shown) so that the two input rollers rotate synchronously. The two input rollers clamp and convey the paper, improving the stability of the paper conveying process.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A closed-loop tension control device for digital printing of roll paper, comprising a base plate (1), characterized in that: Water tanks (2) are fixedly installed on both sides of the upper surface of the base plate (1). Guide rods (3) are inserted into the upper end of the water tanks (2). Buffer rollers (4) are rotatably installed between the guide rods (3). Guide rails (5) are vertically fixedly installed on opposite sides of the water tanks (2). Sliding blocks (6) are slidably engaged inside the guide rails (5). Detection rollers (7) are rotatably installed between the sliding blocks (6). Distance monitoring sensors (8) are fixedly installed inside the guide rails (5) below the sliding blocks (6). Guide rollers (9) are rotatably installed between the water tanks (2) on one side of the detection rollers (7). Input rollers (10) are installed on one side of the upper end of the water tanks (2).

2. The roll-to-roll digital printing tension closed-loop control device according to claim 1, characterized in that: A guide hole (11) is provided at the middle of the upper end of the water tank (2), and the guide rod (3) extends through the guide hole (11) into the interior of the water tank (2). An observation glass (12) is inlaid on one side of the water tank (2).

3. The roll-to-roll digital printing tension closed-loop control device according to claim 1, characterized in that: The lower end of the guide rod (3) is fixedly installed inside the water tank (2) with a perforated float (13), which floats on the liquid injected inside the water tank (2).

4. The roll-to-roll digital printing tension closed-loop control device according to claim 1, characterized in that: The guide rail (5) has a guide rod (14) vertically fixed inside, and the slider (6) is sleeved on the guide rod (14).

5. The roll-to-roll digital printing tension closed-loop control device according to claim 4, characterized in that: A spring (15) is fixedly installed on the upper inside of the guide rail (5). The spring (15) is sleeved on the guide rod (14), and the lower end of the spring (15) is fixedly connected to the slider (6).

6. The roll-to-roll digital printing tension closed-loop control device according to claim 1, characterized in that: An installation plate (16) is fixedly installed on the upper side of the water tank (2), and the input roller (10) is rotatably installed on the installation plate (16).

7. The roll-to-roll digital printing tension closed-loop control device according to claim 6, characterized in that: A drive motor (17) is fixedly mounted on one side of the mounting plate (16), and the output end of the drive motor (17) is fixedly connected to one of the input rollers (10).

8. The roll-to-roll digital printing tension closed-loop control device according to claim 7, characterized in that: The input rollers (10) consist of two input rollers installed vertically, and the two input rollers are linked by gears.

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