Air-floating steering device and control method thereof

Abstract

The present invention relates to the technical field of printing equipment, and specifically to an air-floating steering device and a control method thereof. By providing an air-cushion steering plate to replace the existing 45-degree steering roller, air suspension is adopted to achieve the purpose of steering without causing the paper tape to break. The paper tape does not need to be tightly attached to the steering plate, the friction force is greatly reduced, and the static electricity of the paper tape is also reduced. The air-cushion steering plate has a negative pressure air inlet that can generate attraction, which can prevent the paper tape from excessively separating from the steering plate when suspended, and achieve paper tape balance through inflow and outflow. By adopting this method, the tension of the paper tape caused by friction is also reduced, the probability of paper tape breakage is reduced, the normal printing is ensured, and production efficiency is improved. A corresponding control method is provided, and various parameters of the paper tape during steering are monitored by tension detectors and pressure sensors, making its steering more reliable and controllable.

Description

Technical Field

[0001] The present invention relates to the technical field of printing equipment, and in particular to an air-floating steering device and a control method thereof. Background Art

[0002] Digital printing is a completely new printing method that prints computer files directly onto paper, a departure from the cumbersome processes of traditional printing. Its features include: one-sheet printing, no platemaking required, instant pickup, instant error correction, variable printing, and on-demand printing. Digital printing is a comprehensive technology developed based on printing technology. It uses electronic text as a medium, transmitting it to digital printing equipment via the Internet, enabling direct printing. The absence of plates and the ability to change information are key features of the printing production process, encompassing multiple technical fields including printing, electronics, computers, networks, and communications.

[0003] Chinese Patent Publication No. CN201820367999.7 discloses a steering device for a gravure printing press, and Chinese Patent Publication No. CN20121044667.3 discloses a multi-link rotary printing press. During the paper tape conveyance process, there are corners, and traditionally, common paper transfer rollers are used to complete the corner turning of the paper tape. The corner is 45°, a common technology used in the industry. Current paper transfer rollers can experience excessive friction during use, resulting in high tension on the paper tape during conveyance, which can easily cause the paper tape to break. This high friction also generates a high level of static electricity, which is detrimental to printing and printed products, significantly affecting printing efficiency. Summary of the Invention

[0004] In view of the above problems, the present invention provides an air-floating steering device and a control method thereof.

[0005] The technical solution adopted is that the air-floating steering device includes a steering mechanism, wherein a fixed frame is provided in the steering mechanism, and a paper feed and a paper outlet are provided on the fixed frame. The fixed frame is provided in the steering mechanism, wherein a first paper feed roller, a second paper feed roller and an air cushion steering plate are provided in the fixed frame. The air cushion steering plate is close to the paper feed, and the air cushion steering plate can deflect the paper tape and then transport it to the first paper feed roller. A pressure sensor is provided below the air cushion steering plate. The first paper feed roller is located below the second paper feed roller and can transport the paper tape to the second paper feed roller. The second paper feed roller is close to the paper outlet, and the second paper feed roller can output the paper tape from the paper outlet.

[0006] Furthermore, it also includes a paper feeding mechanism, and the paper feeding mechanism conveys the paper tape to the steering mechanism, and the steering mechanism deflects the paper tape and conveys it to the printing mechanism. A tension detector is provided in the paper feeding mechanism.

[0007] Furthermore, one side of the air cushion deflection plate is located below the paper feed port, and the paper tape passes over the air cushion deflection plate.

[0008] Optionally, the air cushion deflector plate is triangular in shape.

[0009] Furthermore, the air cushion deflection plate is in the shape of a right triangle, and one right-angled side of the air cushion deflection plate is parallel to the inner wall of the fixing frame, and the paper tape is deflected from the oblique side of the air cushion deflection plate.

[0010] Optionally, an air duct is provided on the oblique side of the air cushion deflection plate, and an air outlet is provided on the curved surface of the air duct body, an air inlet is provided at the end of the air duct, and the air duct is connected to the air supply pipe through the air inlet.

[0011] Optionally, the air inlet hole is located on a right-angled side of the air cushion deflecting plate that is parallel to the inner wall of the fixing frame.

[0012] Furthermore, a guide groove is provided on the upper surface of the air cushion deflection plate, and a negative pressure air inlet is provided in the guide groove. A negative pressure air outlet is provided on the side of the air cushion deflection plate, and is connected to the exhaust pipe through the negative pressure air outlet.

[0013] Optionally, the negative pressure air outlet is located on a right-angled side parallel to the air cushion deflection plate and the inner wall of the fixing frame, and the negative pressure air outlet and the air inlet are respectively located at two ends of the right-angled side.

[0014] At the same time, the present invention also provides a control method adapted to the air-floating steering device, which includes the following steps:

[0015] S1. Paper tape input, the paper tape is input from the feeding end of the paper feeding mechanism to the steering mechanism;

[0016] S2. After the paper tape enters the steering mechanism from the paper feeding mechanism, the air cushion steering plate in the steering mechanism calculates the output current signal based on the tension value output by the tension detector in the paper feeding mechanism and the induced voltage output by the pressure sensor, thereby controlling the airflow pressure during the paper tape steering process and steering the paper tape;

[0017] S3. The paper tape is output. After being diverted by the diverting mechanism, the paper tape is transported to the printing mechanism through the paper outlet of the diverting mechanism.

[0018] Furthermore, in S2, after the tension detector of the paper feeding mechanism senses the tension of the paper tape, it transmits the tension value to the control display screen, and controls the DC voltage input according to the thickness and tension value of the paper tape, and converts it into a current signal output through the calculation program. The output current signal drives the proportional valve to work, and the proportional valve is used to adjust the output air flow pressure of the air cushion steering plate, and the air flow pressure can be output to the control display.

[0019] The beneficial effects of the present invention include at least one of the following:

[0020] 1. By setting up an air cushion steering plate to replace the existing 45° steering roller, the air suspension method is adopted to avoid breaking the paper tape and achieve the steering effect. The paper tape does not need to be close to the steering plate, the friction is greatly reduced, and the static electricity of the paper tape is also reduced.

[0021] 2. The air cushion deflector plate also features a negative pressure inlet that generates suction, preventing the paper strip from excessively dislodging from the deflector plate during suspension. This inflow and outflow balances the paper strip. This approach also reduces friction-induced paper strip tension, lowering the probability of paper strip breakage, ensuring normal printing and improving production efficiency.

[0022] 3. Furthermore, a corresponding control method is provided, which monitors various parameters of the paper tape during steering through tension detectors and pressure sensors, and controls current parameters through a calculation program, making its steering more reliable and controllable.

[0023] 4. It solves the problem that the steering structure of the existing printing machine uses a paper transfer roller, which causes excessive friction during application, resulting in high tension in the paper tape during transportation, which easily causes the paper tape to break; it also solves the problem that high friction will generate more static electricity, which is not conducive to printing and printed products, and affects printing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the steering mechanism structure;

[0025] Figure 2 For another perspective, turn to the schematic diagram of the mechanism structure;

[0026] Figure 3 Schematic diagram of the air cushion steering plate structure;

[0027] Figure 4 Schematic diagram of the fixed frame structure;

[0028] Figure 5 This is a schematic diagram of the structure of an air-floating steering device;

[0029] Figure 6 This is a schematic diagram of the structure of the air-floating steering device from another perspective;

[0030] Markings in the figure are: 1 is a fixed frame, 2 is a paper outlet, 3 is a paper inlet, 4 is an air cushion deflection plate, 5 is a second paper feed roller, 6 is a first paper feed roller, 7 is an air guide tube, 8 is an air outlet, 9 is a guide groove, 10 is a paper tape, 11 is a negative pressure air inlet, 12 is a negative pressure air outlet, 13 is an air inlet, 20 is a paper loading mechanism, 21 is a first tension detector, 22 is a second tension detector, 23 is a pressure sensor, and 24 is a control display screen. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention; the terms "first" and "second" and the like are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figures 1 to 6 As shown, an air-floating steering device includes a steering mechanism, wherein a fixed frame 1 is provided in the steering mechanism, and a paper feed port 3 and a paper outlet 2 are provided on the fixed frame 1. The fixed frame 1 is arranged in the steering mechanism, wherein a first paper feed roller 6, a second paper feed roller 5 and an air cushion steering plate 4 are provided in the fixed frame 1. The air cushion steering plate 4 is close to the paper feed port 3 and can deflect the paper tape 10 and then convey it to the first paper feed roller 6. A pressure sensor 23 is provided below the air cushion steering plate 4. The first paper feed roller 6 is located below the second paper feed roller 5 and can convey the paper tape 10 to the second paper feed roller 5. The second paper feed roller 5 is close to the paper outlet 2 and can output the paper tape 10 from the paper outlet 2.

[0034] At the same time, it also includes a paper feeding mechanism 20, and the paper feeding mechanism 20 conveys the paper tape 10 to the steering mechanism, and the steering mechanism turns the paper tape 10 and then conveys it to the printing mechanism. A tension detector is set in the paper feeding mechanism 20.

[0035] At the same time, one side of the air cushion deflection plate 4 is located below the paper inlet 3 , and the paper tape 10 passes over the air cushion deflection plate 4 .

[0036] Furthermore, the air cushion deflecting plate 4 is triangular in shape.

[0037] At the same time, in this embodiment, the air cushion deflection plate 4 is in the shape of a right triangle, and one right-angled side of the air cushion deflection plate 4 is parallel to the inner wall of the fixing frame 1, and the paper tape 10 is deflected from the oblique side of the air cushion deflection plate 4.

[0038] Furthermore, an air duct 7 is provided on the oblique side of the air cushion deflection plate 4, and an air outlet 8 is opened on the curved surface of the air duct 7. An air inlet 13 is provided at the end of the air duct 7 and is connected to the air supply pipe through the air inlet 13.

[0039] At the same time, the air inlet 13 is located on a right-angled side parallel to the inner wall of the air cushion deflecting plate 4 and the fixing frame 1 .

[0040] Furthermore, a guide groove 9 is provided on the upper surface of the air cushion deflection plate 4, and a negative pressure air inlet 11 is provided in the guide groove 9. A negative pressure air outlet 12 is provided on the side of the air cushion deflection plate 4 and is connected to the exhaust pipe through the negative pressure air outlet 12.

[0041] Finally, the negative pressure air outlet 12 is located on a right angle side parallel to the inner wall of the air cushion deflection plate 4 and the fixing frame 1 , and the negative pressure air outlet 12 and the air inlet 13 are located at two ends of the right angle side respectively.

[0042] The purpose of this design is to replace the existing 45° steering roller with an air cushion steering plate, and to achieve the steering effect without breaking the paper tape by using air suspension. The paper tape does not need to be close to the steering plate, the friction is greatly reduced, and the static electricity of the paper tape is also reduced. At the same time, the air cushion steering plate has a negative pressure air inlet that can generate attraction, which can prevent the paper tape from excessively separating from the steering plate when suspended, and the paper tape is balanced by one in and one out. By adopting this method, the tension of the paper tape caused by friction is also reduced, the probability of paper tape breakage is reduced, the normal printing is ensured, and production efficiency is improved. The steering structure of the existing printing machine uses a paper transfer roller, which will cause excessive friction during use, and the tension of the paper tape is high during transportation, which is easy to cause the paper tape to break; it also solves the problem that due to the large friction, more static electricity is generated, which is not conducive to printing and printed products, and affects printing efficiency.

[0043] At the same time, it should be pointed out that the main improvement of this embodiment lies in the setting of the steering mechanism and the provision of an air cushion steering plate with a special structure, while no adjustments are made to other structures of the printing press, and usually the air cushion steering plate is installed in the fixing frame through fixing parts such as fixing bolts.

[0044] During use, the paper tape coming out of the paper loading mechanism passes through the paper feed port of the paper feeding mechanism and enters the fixed frame of the printing press, passes through the upper surface of the air cushion deflection plate, then bypasses the oblique edge of the air cushion deflection plate, turns 45 degrees and passes through the bottom, then moves to the first paper feeding roller, winds out from the outside of the lower part of the first paper feeding roller, moves upward to the second paper feeding roller, winds out from the upper part of the second paper feeding roller and leaves the printing press through the paper outlet.

[0045] Usually, the air cushion deflector plate can be in the form of a triangular plate, but in actual use, some usage scenarios will use structures such as a right-angled trapezoid, that is, a geometric figure with a hypotenuse and an edge parallel to the inner wall of the fixed frame can generally meet the requirements.

[0046] One side of the air cushion deflecting plate is designed as a thicker plate edge shaft with air holes. The plate edge shaft is a hollow structure. The plate edge shaft here is the air guide tube, which is filled with compressed air. The inside of the air cushion deflecting plate is a thin plate. The part where the thin plate is connected to the plate edge shaft is provided with a guide groove, on which a negative pressure air inlet is provided to attract the paper tape and let in air through the pump.

[0047] The paper tape passes over the air cushion deflector plate's edge shaft, exits from the bottom, and winds off the first paper feed roller. It then moves upward and out of the second paper feed roller. After the air cushion deflector plate's edge shaft is ventilated, the paper tape floats against the edge shaft. As the paper tape passes over the air cushion deflector plate, the suction holes provide suction, ensuring that the paper tape does not deviate from the plate.

[0048] The function of the guide groove is to collect paper dust on the paper tape. When the paper tape passes through the turning plate during transmission and when the paper tape vibrates, paper dust will fall off. The paper dust falls into the guide groove and is introduced into the negative pressure air inlet through the suction force of the suction pump. Negative pressure is formed in the guide groove, which flattens the paper and reduces the formation of paper wrinkles.

[0049] During the entire working process, after the paper tape enters the fixed frame, the negative pressure air inlet on the guide groove located at a right angle side parallel to the fixed frame draws the paper tape downward under the action of air pressure, and sucks the paper powder on it into the negative pressure air inlet.

[0050] At the same time, when the paper tape moves to the oblique edge of the air cushion deflecting plate, the gas introduced into the air inlet from the air pipe is discharged from the air outlet, lifting the paper tape upward to form a state similar to suspension. At the same time, a guide groove is also provided on the oblique edge of the air cushion deflecting plate, which is provided with a negative pressure air inlet to prevent the paper tape from excessively separating from the deflecting plate when suspended. The paper tape is balanced by the inflow and outflow.

[0051] At the same time, this embodiment discloses a specific control method of the air-floating steering device, including the following steps:

[0052] S1. Tape input, the tape 10 is input from the feed end of the paper mechanism 20 to the steering mechanism;

[0053] S2. After the paper tape 10 enters the steering mechanism from the paper loading mechanism 20, the air cushion steering plate 4 in the steering mechanism calculates an output current signal based on the tension value output by the tension detector in the paper loading mechanism 20 and the induced voltage output by the pressure sensor 23, thereby controlling the airflow pressure during the steering process of the paper tape 10 and steering the paper tape;

[0054] S3. The paper tape is output. After being diverted by the diverting mechanism, the paper tape is transported to the printing mechanism through the paper outlet 2 of the diverting mechanism.

[0055] In addition, in S2, after the tension detector of the paper feeding mechanism 20 senses the tension of the paper tape 10, the tension value is transmitted to the control display screen 24, and the DC voltage input is controlled according to the thickness and tension value of the paper tape 10. The DC voltage is converted into a current signal output through the operation program, and the output current signal drives the proportional valve to work, and the proportional valve is used to adjust the output air flow pressure of the air cushion deflector plate, and the air flow pressure can be output to the control display screen 24.

[0056] In actual use, there are multiple tension detectors in the paper feeding mechanism, usually the first tension detector 21 and the second tension detector 22 are located on both sides of the paper tape entry end, which can sense the tension on the paper tape. In general, when the paper thickness of the paper tape is 40g / m 2 When , the tension is controlled at 5kg / f, the DC voltage is 5V, the conversion current signal is 10mA, and the air flow pressure is 0.2MPa.

[0057] On the steering mechanism side, the induced voltage of the pressure sensor 23 inside the steering mechanism is generally a DC voltage of 0-10V. Through the calculation program, it outputs a current signal of 4-20mA, driving the proportional valve to adjust the compressed air pressure output by the air hole. The air pressure range is 0.2-0.45MPa, thereby forming a stable airflow on the plate edge axis to ensure that the paper is stably suspended on the plate edge axis.

[0058] According to statistics, the thickness of paper is generally 40-120g, and the paper currently used is 40-105g thick.

[0059] The corresponding relationship between paper thickness and tape tension is:

[0060] When the paper thickness is 40 g / m 2 When the paper tape tension is 5kg / f, the air flow pressure is 0.2MPa, and the negative pressure value is -0.03MPa;

[0061] When the paper thickness is 60 g / m 2 When the paper tape tension is 6.5kg / f, the air flow pressure is 0.3MPa, and the negative pressure value is -0.03MPa;

[0062] When the paper thickness is 70 g / m 2 When the paper tape tension is 7-8kg / f, the air flow pressure is 0.35MPa, and the negative pressure value is -0.04MPa;

[0063] When the paper thickness is 80 g / m 2 When the paper tape tension is 10kg / f, the air flow pressure is 0.4MPa, and the negative pressure value is -0.05MPa;

[0064] When the paper thickness is 105 g / m 2 When the paper tape tension is 14kg / f, the air flow pressure is 0.45MPa, and the negative pressure value is -0.06MPa;

[0065] At the same time, the air outlet uses compressed air, and has a pressure valve and a pressure detector to control the gas pressure. The gas pressure is controlled at 0.2-0.45MPa. The air outlet holes are arranged evenly on the arc surface where the steering plate and the paper tape interact.

[0066] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. The positions and numbers of the first paper feed roller and the second paper feed roller of the present invention can be adjusted. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air-floating steering device, comprising a steering mechanism, characterized in that: A fixed frame (1) is provided in the steering mechanism, and a paper feed port (3) and a paper outlet (2) are provided on the fixed frame (1). The fixed frame (1) is provided in the steering mechanism, and a first paper feed roller (6), a second paper feed roller (5) and an air cushion steering plate (4) are provided in the fixed frame (1). The air cushion steering plate (4) is close to the paper feed port (3). The air cushion steering plate (4) can deflect the paper tape (10) and then transport it to the first paper feed roller (6). A pressure sensor (23) is provided below the air cushion steering plate (4). The first paper feed roller (6) is located below the second paper feed roller (5) and can transport the paper tape (10) to the second paper feed roller (5). The second paper feed roller (5) is close to the paper outlet (2). The second paper feed roller (5) can output the paper tape (10) from the paper outlet (2). The air cushion deflection plate (4) is in the shape of a right triangle, and one right-angled side of the air cushion deflection plate (4) is parallel to the inner wall of the fixing frame (1), and the paper tape (10) is deflected from the oblique side of the air cushion deflection plate (4); An air guide tube (7) is provided on the oblique side of the air cushion deflection plate (4), and an air outlet (8) is provided on the curved surface of the air guide tube (7). An air inlet (13) is provided at the end of the air guide tube (7), and the air guide tube (7) is connected to the air supply pipe through the air inlet (13); The upper surface of the air cushion deflection plate (4) is further provided with a guide groove (9), and a negative pressure air inlet (11) is provided in the guide groove (9). A negative pressure air outlet (12) is provided on the side of the air cushion deflection plate (4), and is connected to the exhaust pipe through the negative pressure air outlet (12); The negative pressure air outlet (12) is located on a right-angled side parallel to the inner wall of the air cushion deflection plate (4) and the fixing frame (1), and is located at both ends of the right-angled side with the air inlet (13).

2. The air-floating steering device according to claim 1, characterized in that: The paper feeding mechanism (20) is further comprised, wherein the paper feeding mechanism (20) conveys the paper tape (10) to the steering mechanism, wherein a tension detector is provided in the paper feeding mechanism (20), and the steering mechanism conveys the paper tape (10) to the printing mechanism after it is turned.

3. The air-floating steering device according to claim 2, characterized in that: One side of the air cushion deflection plate (4) is located below the paper feed port (3), and the paper tape (10) passes over the air cushion deflection plate (4).

4. A method for controlling an air-floating steering device, characterized in that: The air-floating steering device is an air-floating steering device according to any one of claims 1 to 3, comprising the following steps: S1. Paper tape input, the paper tape (10) is input from the feeding end of the paper feeding mechanism (20) to the steering mechanism; S2. After the paper tape (10) enters the steering mechanism from the paper feeding mechanism (20), the air cushion steering plate (4) in the steering mechanism calculates the output current signal based on the tension value output by the tension detector in the paper feeding mechanism (20) and the induced voltage output by the pressure sensor (23), thereby controlling the air flow pressure during the steering process of the paper tape (10) and steering the paper tape; S3. The paper tape is outputted. After being diverted by the diverting mechanism, the paper tape is delivered to the printing mechanism through the paper outlet (2) of the diverting mechanism.

5. The air-floating steering device control method according to claim 4, characterized in that: In S2, after the tension detector of the paper feeding mechanism (20) senses the tension of the paper tape (10), the tension value is transmitted to the control display (24), and the DC voltage input is controlled according to the thickness and tension value of the paper tape (10), and is converted into a current signal output through an operation program. The output current signal drives the proportional valve to operate, and the proportional valve is used to adjust the output air flow pressure of the air cushion deflection plate. The air flow pressure can be output to the control display (24).

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