Online paper laying machine and self-adaptive compression roller device thereof

Abstract

The self-adaptive compression roller device comprises a fixing frame, a main rubber covered roller and an upper compression roller, the fixing frame is provided with an upper compression roller leaning wheel and two hinge mechanisms, the upper compression roller leaning wheel is arranged on one hinge mechanism, the upper compression roller is arranged on the other hinge mechanism, and the main rubber covered roller is arranged on the upper compression roller leaning wheel. Springs are arranged between the fixing frame and the two hinge mechanisms so that the upper pressing roller can be pressed on the main rubber roller, the upper pressing roller is pressed on the upper pressing roller through wheels, and a pressure balance mechanism is arranged between the two springs and the fixing frame so that pressure between the main rubber roller and the upper pressing roller can be balanced. Sufficient and appropriate pressure can be provided, it is guaranteed that the pressure is constant, and self-adaption to production working conditions changing in real time can be achieved.

Description

Technical Field

[0001] This invention belongs to the field of paper laying machine technology, and particularly relates to an online paper laying machine and its adaptive pressure roller device. Background Technology

[0002] Photovoltaic glass is a special type of glass used in the manufacture of solar panels, characterized by high light transmittance, low reflectivity, and high mechanical strength. Finished photovoltaic glass requires surface protection. A common method is to lay a layer of paper on the surface of the photovoltaic glass to isolate it from moisture and impurities in the air, keeping the surface clean and dry, and preventing scratches caused by vibration during transportation. A paper-laying machine is a device used to lay paper on the surface of photovoltaic glass, primarily for protection and isolation during the photovoltaic glass production process.

[0003] Chinese patent application number 202310672553.0, entitled "Online Electrostatic Continuous Paper Laying Machine and Paper Laying Method for Photovoltaic Glass," was published on September 22, 2023. The accompanying drawings in the specification... Figure 1 As shown in Figures 11 and 13, before the blade 35, the paper tape is extruded through a main rubber roller and a pressure roller. The release length and state of the paper tape are entirely determined by the state of the main rubber roller and the pressure roller, which leads to three problems:

[0004] First, regarding the fixed length dimension, if the pressure between the main rubber roller and the pressure roller is insufficient, the paper belt will slip during movement, resulting in an unstable paper feeding length that is sometimes long and sometimes short. The paper feeding process requires the fixed length to be stable, with an accuracy within 0.5mm after 1000 repetitions. Therefore, it is necessary to ensure that there is sufficient and constant pressure between the two rollers.

[0005] Secondly, as mentioned in the first point, sufficient pressure must be ensured between the two rollers, but the pressure between them must not be excessive. All materials in the objective world are elastic. As disclosed in this application, the pressure roller is installed with both ends fixed and held in place by a spring-loaded pressure roller. If the pressure at both ends is too high, it will cause the pressure roller to undergo arching deformation, that is, deformation at both ends towards the main rubber roller. In fact, the ends of this steel pressure roller may even encroach on the generatrix of the main rubber roller's cylinder (because the main rubber roller is made of rubber-coated material). Besides the two... Deformation occurs at the end of the paper tape away from the main roller (this can cause the paper tape to slip). Even if the device has several pressure rollers that can be adjusted by springs, the deformation of metal is generally small and invisible to the naked eye. Therefore, the commissioning personnel cannot know how much adjustment margin is appropriate. If the spring tension is adjusted to the maximum without considering the appropriate adjustment margin, even if the pressure roller is indeed pressed tightly against the main roller, it will cause severe wrinkles in the paper tape. Wrinkles are not allowed by the process (the process requires that the paper tape covering the material surface must be flat).

[0006] Third, in addition to the two points mentioned above, the current structure cannot automatically adjust the pressure according to changes in the production environment and working conditions. Once it is adjusted at the beginning, it is fixed and cannot be changed during the intermediate production process. That is, it cannot automatically adapt to the real-time changes in production conditions, and the paper laying effect of the whole machine is often unsatisfactory. Summary of the Invention

[0007] The purpose of this invention is to solve the above-mentioned technical problems existing in the prior art, and to provide an online paper laying machine and its adaptive pressure roller device, which can provide sufficient and appropriate pressure, ensure constant pressure, and adapt to real-time changing production conditions.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] An adaptive pressure roller device for an online paper laying machine includes a fixed frame, a main rubber roller, and an upper pressure roller. The fixed frame is characterized by having an upper pressure roller guide wheel and two sets of hinge mechanisms. The upper pressure roller guide wheel is mounted on one set of hinge mechanisms, and the upper pressure roller is mounted on the other set of hinge mechanisms. Springs are provided between the fixed frame and both sets of hinge mechanisms to ensure that the upper pressure roller presses against the main rubber roller and the upper pressure roller guide wheel presses against the upper pressure roller. A pressure balancing mechanism is provided between the two sets of springs and the fixed frame to balance the pressure between the main rubber roller and the upper pressure roller.

[0010] Furthermore, the pressure balancing mechanism includes a first cylinder and a second cylinder. One end of the first cylinder is rotatably connected to a fixed base, and the other end of the first cylinder is connected to a spring connected to the upper pressure roller. One end of the second cylinder is rotatably connected to a fixed base, and the other end of the second cylinder is connected to a spring connected to the upper pressure roller. The first cylinder is provided with a first air inlet pipe and a first air outlet pipe, and the second cylinder is provided with a second air inlet pipe and a second air outlet pipe. The first air inlet pipe and the second air outlet pipe are connected by a first connecting pipe, and the second air inlet pipe and the first air outlet pipe are connected by a second connecting pipe.

[0011] Furthermore, proportional-integral-differential valves are provided between the first connecting pipe and the second connecting pipe.

[0012] Furthermore, pressure switches are provided in the first air inlet pipe, the first air outlet pipe, the second air inlet pipe, and the second air outlet pipe.

[0013] Furthermore, the first air inlet pipe, the first air outlet pipe, the second air inlet pipe, and the second air outlet pipe are all connected to a compressed air source.

[0014] Furthermore, a precision flow valve is installed after the compressed air source, and a tension feeder is provided on the spring. The tension feeder and the precision flow valve are electrically connected.

[0015] Furthermore, the upper pressure roller has a segmented structure.

[0016] Furthermore, each upper pressure roller is equipped with two upper pressure roller guide rollers.

[0017] Furthermore, the hinge mechanism includes a connecting plate, a support, and a rotating rod. The connecting plate is connected to the fixed seat, the support is located on the connecting plate, and the rotating rod is located on the support and rotatably connected to the support.

[0018] The present invention also discloses an online paper laying machine, characterized in that: the above-mentioned adaptive pressure roller device is used.

[0019] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0020] This invention, by setting up a pressure balancing mechanism, can balance the pressure between the main rubber roller and the upper pressure roller, ensuring sufficient pressure between them to prevent the paper tape from slipping during its movement between the two rollers. It also prevents excessive pressure between the main rubber roller and the upper pressure roller from causing severe wrinkles in the paper tape. At the same time, the pressure balancing mechanism allows the pressure between the main rubber roller and the upper pressure roller to be automatically adjusted according to the production environment and operating conditions, enabling the equipment to maintain excellent paper laying quality and precision over a long period of time. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of an adaptive pressure roller device for an online paper laying machine according to the present invention, which is installed in the paper laying machine;

[0023] Figure 2 This is a schematic diagram of the adaptive pressure roller device of the present invention;

[0024] Figure 3 This is a schematic diagram of the connection between the upper pressure roller and the upper pressure roller guide wheel in this invention.

[0025] In the diagram, 1-fixed frame; 2-main rubber roller; 3-upper pressure roller; 4-upper pressure roller guide wheel; 5-hinge mechanism; 6-spring; 7-pressure balance mechanism; 8-first cylinder; 9-second cylinder; 10-first air inlet pipe; 11-first air outlet pipe; 12-second air inlet pipe; 13-second air outlet pipe; 14-first connecting pipe; 15-second connecting pipe; 16-proportional-integral-differential valve; 17-pressure switch; 18-compressed air source; 19-precision flow valve; 20-connecting plate; 21-support; 22-rotating rod; 23-tension feeder. Detailed Implementation

[0026] like Figures 1 to 3As shown, this invention provides an adaptive pressure roller device for an online paper laying machine, comprising a fixed frame 1, a main rubber roller 2, and an upper pressure roller 3. The fixed frame 1 generally serves a supporting function, used to fix the upper pressure roller 3 and the upper pressure roller guide wheel 4. The main rubber roller 2 and the upper pressure roller 3 cooperate for conveying the paper tape. The main rubber roller 2 and the fixed frame 1 are mounted on the frame of the paper laying machine. Specifically, the fixed frame 1 is provided with the upper pressure roller guide wheel 4 and two sets of hinge mechanisms 5. The upper pressure roller guide wheel 4 is mounted on one set of hinge mechanisms 5, and the upper pressure roller 3 is mounted on the other set of hinge mechanisms 5. Springs 6 are provided between the fixed frame 1 and the two sets of hinge mechanisms 5 to press the upper pressure roller 3 onto the main rubber roller 2 and the upper pressure roller guide wheel 4 onto the upper pressure roller 3. A pressure balancing mechanism 7 is provided between the two sets of springs 6 and the fixed frame 1 to balance the pressure between the main rubber roller 2 and the upper pressure roller 3. With the above setup, the spring 6 provides tension to press the upper pressure roller 3 on the hinge mechanism 5 onto the main rubber roller 2, and the upper pressure roller guide wheel 4 presses onto the upper pressure roller 3. The pressure balancing mechanism 7 connects the two sets of springs 6. When the pressure between the main rubber roller 2 and the upper pressure roller 3 exceeds the balance state, the pressure of the upper pressure roller 3 is balanced to the upper pressure roller guide wheel 4, so that there is sufficient and appropriate pressure between the upper pressure roller 3 and the main rubber roller 2, and the pressure is constant, ensuring the stable and reliable release of the paper tape.

[0027] As one implementation method, the pressure balancing mechanism 7 includes a first cylinder 8 and a second cylinder 9. One end of the first cylinder 8 is rotatably connected to the fixed base, and the other end of the first cylinder 8 is connected to the spring 6 connected to the upper pressure roller 4. One end of the second cylinder 9 is rotatably connected to the fixed base, and the other end of the second cylinder 9 is connected to the spring 6 connected to the upper pressure roller 3. The first cylinder 8 is provided with a first air inlet pipe 10 and a first air outlet pipe 11, and the second cylinder 9 is provided with a second air inlet pipe 12 and a second air outlet pipe 13. The first air inlet pipe 10 and the second air outlet pipe 13 are connected by a first connecting pipe 14, and the second air inlet pipe 12 and the first air outlet pipe 11 are connected by a second connecting pipe 15. With the above configuration, the first cylinder 8 and the second cylinder 9 are connected. When external working conditions or disturbances cause changes in the pressure between the upper pressure roller 3 and the main rubber roller 2, the pressure in the second air inlet pipe 12 and the second air outlet pipe 13 of the second cylinder 9 will change. The upper pressure roller 3 will deform and shift. The deformation will cause the upper pressure roller abutment 4 that is in contact with the upper pressure roller 3 to move, thereby transmitting the deformation to the first air inlet pipe 10 and the first air outlet pipe 11 of the first cylinder 8, causing a change in the pressure inside the pipe. The pressure in the first air inlet pipe 10, the first air outlet pipe 11, the second air inlet pipe 12 and the second air outlet pipe 13 will be balanced by the action of the first connecting pipe 14 and the second connecting pipe 15, thereby providing sufficient and appropriate pressure to the upper pressure roller 3.

[0028] Specifically, a proportional-integral-differential valve 16 is provided between the first connecting pipe 14 and the second connecting pipe 15. This configuration allows for more precise adjustment of the pressure within the pipes of the first cylinder 8 and the second cylinder 9. Let the pressure within the pipe of the first cylinder 8 be defined as P1, and the pressure within the pipe of the second cylinder 9 as P2. In equilibrium, Px = P1 - P2, where Px is a constant value P0. In the coordinate system, Px is represented as a straight line parallel to the X-axis with a value of P0. When the equilibrium is broken, Px changes from a straight line to a curve and begins to rise. The inlet and outlet pressures within the first cylinder 8 and the second cylinder 9 compensate for each other under the action of the proportional-integral-differential valve 16, thus restricting the upward rise of the Px curve and causing it to fall back to P0. Subsequently, the Px curve experiences several oscillations around P0 before finally coinciding with P0. In summary, the pressures between the upper pressure rollers 3 and 3 pressure wheels mutually constrain each other, eventually reaching a steady state, meaning Px will always tend towards P0.

[0029] Taking the decrease in pressure of the second intake pipe 12 of the second cylinder 9 and the increase in pressure of the second outlet pipe 13 as an example, at this time, the compressed air in the first outlet pipe 11 of the first cylinder 8 will compensate for the decrease in pressure of the second intake pipe 12. Specifically, the middle part of the upper pressure roller 3 will undergo a slight outward deformation. After adjustment by the proportional-integral-differential valve 16, the intake pressure of the first cylinder 8 connected to the upper pressure roller wheel 4 will increase slightly to push back the slight outward deformation of the upper pressure roller 3. At this time, the second cylinder 9 will be depressurized so that there is no gap between the middle part of the upper pressure roller 3 and the main rubber roller 2, and vice versa.

[0030] In this embodiment, pressure switches 17 are provided in the first air inlet pipe 10, the first air outlet pipe 11, the second air inlet pipe 12, and the second air outlet pipe 13. The pressure switch 17 is a sensor that can both detect the pressure inside the pipeline and output an electrical signal. Through this arrangement, the pressure inside the first air inlet pipe 10, the first air outlet pipe 11, the second air inlet pipe 12, and the second air outlet pipe 13 can be monitored in real time, facilitating the detection and monitoring of pipeline pressure.

[0031] In one implementation, the first air inlet pipe 10, the first air outlet pipe 11, the second air inlet pipe 12, and the second air outlet pipe 13 are all connected to the compressed air source 18. This configuration allows for the replenishment of compressed air when pipeline pressure needs to be adjusted.

[0032] Specifically, a precision flow valve 19 is installed after the compressed air source 18, and a tension feeder 23 is provided on the spring 6. The tension feeder 23 and the precision flow valve 19 are electrically connected. The precision flow valve 19 is used to control the metered replenishment of compressed air from the compressed air source 18, so that the entire system can be stabilized at P0. The tension feeder 23 is used to detect the tension of the spring 6. When the tension is abnormal, the tension feeder 23 will send a signal to the precision flow valve 19, thereby controlling the replenishment of compressed air.

[0033] As one implementation method, the upper pressure roller 3 has a segmented structure. By adopting a segmented upper pressure roller 3, the deformation of the pressure roller can be reduced when the pressure between the upper pressure roller 3 and the main rubber roller 2 increases, so that the upper pressure roller 3 can better fit the main rubber roller 2 and improve the paper feeding effect.

[0034] Specifically, each upper pressure roller 3 is equipped with two upper pressure roller guide rollers 4. This arrangement allows for real-time detection of slight deformations in the upper pressure roller 3, thereby adjusting the pressure balance and ensuring sufficient and constant pressure between the upper pressure roller 3 and the main rubber roller 2. The number of upper pressure roller guide rollers 4 can be determined based on factors such as detection accuracy and cost; one can be positioned in the middle of the upper pressure roller 3, or three or more can be spaced apart at intervals along the upper pressure roller 3.

[0035] As one implementation, the hinge mechanism 5 includes a connecting plate 20, a support 21, and a rotating rod 22. The connecting plate 20 is connected to the fixed base, the support 21 is mounted on the connecting plate 20, and the rotating rod 22 is mounted on the support 21 and rotatably connected to the support 21. This arrangement facilitates the upper pressure roller 3 applying pressure to the main rubber roller 2, and allows the upper pressure roller guide wheel 4 to contact the upper pressure roller 3 and sense its deformation in real time.

[0036] This invention also discloses an online paper laying machine, characterized by employing the aforementioned adaptive pressure roller device. The paper laying machine employing the aforementioned adaptive pressure roller device can provide sufficient and appropriate pressure between the main rubber roller 2 and the upper pressure roller 3, and the pressure is constant. It can adaptively adjust the pressure according to changes in working conditions, effectively improving the paper laying effect and efficiency.

[0037] This invention, by incorporating a pressure balancing mechanism 7, balances the pressure between the main rubber roller 2 and the upper pressure roller 3. This ensures sufficient pressure between the two rollers to prevent slippage of the paper tape during movement and also prevents excessive pressure from causing severe wrinkles in the paper tape. Furthermore, the pressure balancing mechanism 7 allows the pressure between the main rubber roller 2 and the upper pressure roller 3 to automatically adjust according to the production environment and operating conditions, maintaining consistently high paper laying quality and precision.

[0038] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. An adaptive pressure roller device for an online paper laying machine, comprising a fixed frame, a main rubber roller, and an upper pressure roller, characterized in that: The fixed frame is equipped with an upper pressure roller support wheel and two sets of hinge mechanisms. The upper pressure roller support wheel is mounted on one set of the hinge mechanisms, and the upper pressure roller is mounted on the other set of the hinge mechanisms. A spring is provided between the fixed frame and the two sets of the hinge mechanisms so that the upper pressure roller presses against the main rubber roller and the upper pressure roller support wheel presses against the upper pressure roller. A pressure balancing mechanism is provided between the two sets of springs and the fixed frame to balance the pressure between the main rubber roller and the upper pressure roller.

2. The adaptive pressure roller device for an online paper laying machine according to claim 1, characterized in that: The pressure balancing mechanism includes a first cylinder and a second cylinder. One end of the first cylinder is rotatably connected to the fixed base, and the other end of the first cylinder is connected to a spring connected to the upper pressure roller. One end of the second cylinder is rotatably connected to the fixed base, and the other end of the second cylinder is connected to a spring connected to the upper pressure roller. The first cylinder is provided with a first air inlet pipe and a first air outlet pipe, and the second cylinder is provided with a second air inlet pipe and a second air outlet pipe. The first air inlet pipe and the second air outlet pipe are connected by a first connecting pipe, and the second air inlet pipe and the first air outlet pipe are connected by a second connecting pipe.

3. The adaptive pressure roller device for an online paper laying machine according to claim 2, characterized in that: A proportional-integral-differential valve is provided between the first connecting pipe and the second connecting pipe.

4. The adaptive pressure roller device for an online paper laying machine according to claim 2, characterized in that: The first air inlet pipe, the first air outlet pipe, the second air inlet pipe, and the second air outlet pipe are all equipped with pressure switches.

5. The adaptive pressure roller device for an online paper laying machine according to claim 2, characterized in that: The first air inlet pipe, the first air outlet pipe, the second air inlet pipe, and the second air outlet pipe are all connected to a compressed air source.

6. The adaptive pressure roller device for an online paper laying machine according to claim 5, characterized in that: A precision flow valve is installed after the compressed air source, and the spring is equipped with a tension feeder, which is electrically connected to the precision flow valve.

7. The adaptive pressure roller device for an online paper laying machine according to claim 1, characterized in that: The upper pressure roller has a segmented structure.

8. The adaptive pressure roller device for an online paper laying machine according to claim 7, characterized in that: Each section of the upper pressure roller is provided with two corresponding upper pressure roller guide rollers.

9. The adaptive pressure roller device for an online paper laying machine according to claim 1, characterized in that: The hinge mechanism includes a connecting plate, a support, and a rotating rod. The connecting plate is connected to the fixed base, the support is disposed on the connecting plate, and the rotating rod is disposed on the support and rotatably connected to the support.

10. A paper-laying machine for online applications, characterized in that: The aforementioned adaptive pressure roller device was adopted.

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