A paper roll supply system with paper roll run-out detection

Abstract

The utility model discloses a paper roll supply system with paper roll exhaustion detection, including paper roll installation pivot and a plurality of guide rollers, the paper roll on paper roll installation pivot is formed paper roll supply path by the guide roller traction, is equipped with paper roll exhaustion detection mechanism on paper roll supply path, and paper roll exhaustion detection mechanism includes detection unit and position sensor, and detection unit includes linear guide rail, lifting piece and movable roller, and linear guide rail perpendicularly sets up, and lifting piece sliding installation is in linear guide rail, and movable roller installs on lifting piece, and paper roll is wound and is equipped with in movable roller's bottom, and position sensor is equipped with in linear guide rail's side. The utility model utilizes detection unit, changes into the position change of lifting piece and movable roller when paper roll exhausts, and then again combines position sensor, and the position of lifting piece is inducted, realizes automatic detection to paper roll exhaustion, and lays the foundation for subsequent automatic roll change and continuation feeding.

Description

Technical Field

[0001] This utility model relates to the technical field of paper roll supply systems, and in particular to a paper roll supply system with paper roll exhaustion detection. Background Technology

[0002] Battery separator paper is a key material in battery manufacturing. Its core function is to physically isolate the positive and negative electrodes of the battery, preventing direct contact between the two electrodes and thus preventing short circuits, thereby ensuring the battery's safety and electrochemical performance. In the production process of alkaline batteries, battery separator paper is usually stored in reels and automatically fed through a paper roll supply system. Specifically, the separator paper reel is mounted on a rotating shaft of the supply system and is drawn to the separator paper station by guide rollers. As the station continuously consumes separator paper, the reel is unwound, achieving continuous supply.

[0003] When the release liner on the spindle is depleted, the machine must be stopped to replace it with a new one. Currently, mainstream paper roll supply systems still rely on manual operation: workers observe the remaining amount on the liner, manually remove the depleted liner, and install a new one. This manual intervention method has significant drawbacks: 1. Low efficiency: Manual monitoring and replacement require frequent downtime, affecting production continuity. Especially in high-speed production lines, downtime directly impacts capacity. 2. High labor costs: Requires dedicated personnel, increasing labor input; 3. Risk of misjudgment: Manual observation may be delayed or misjudged, leading to paper supply interruption or material waste.

[0004] To improve automation levels, there is an urgent need to develop an intelligent supply system capable of automatically detecting and replacing depleted battery separator reels. The primary technical challenge in implementing this system lies in accurately and in real-time detecting the depletion status of the separator reels. Existing technologies, such as mechanical tension sensing or photoelectric detection, are prone to false triggering or response delays in applications involving thin, flexible battery separator materials, and struggle to adapt to the compatibility requirements of different roll diameters. Furthermore, electromagnetic interference or mechanical vibrations in the battery production environment can further reduce detection reliability.

[0005] Therefore, there is an urgent need for a highly adaptable and cost-effective reel depletion detection solution to lay the foundation for subsequent automatic reel changing and continuous material supply. Utility Model Content

[0006] The purpose of this invention is to provide a paper roll supply system with paper roll exhaustion detection.

[0007] The technical solution to achieve the purpose of this utility model is: a paper roll supply system with paper roll exhaustion detection, including a machine plate, on which a paper roll mounting shaft and several guide rollers are mounted. A paper roll is mounted on the paper roll mounting shaft, and the paper roll is wound around the guide rollers and pulled by the guide rollers to form a paper roll supply path. A paper roll exhaustion detection mechanism is provided on the paper roll supply path. The paper roll exhaustion detection mechanism includes a detection unit and a position sensor. The detection unit includes a linear guide rail, a lifting block and a movable roller. The linear guide rail is vertically arranged and mounted on the machine plate. The lifting block is slidably mounted on the linear guide rail. The movable roller is mounted on the lifting block. The axis of the movable roller, the axis of the paper roll mounting shaft and the axis of the guide roller are all parallel. The paper roll on the paper roll supply path is wound around the bottom of the movable roller. The position sensor is located on the side of the linear guide rail.

[0008] Furthermore, the linear guide rail includes a guide rod, which is vertically arranged, and the lifting block is slidably mounted on the guide rod. The linear guide rail can be a guide rail with a T-shaped cross-section, or it can be a guide rod or a guide groove. Compared with other types, guide rods are easier to source and install.

[0009] Furthermore, the lifting block is a bushing, which is movably fitted onto the guide rod.

[0010] Furthermore, the linear guide rail also includes a guide groove, which is vertically arranged. A roller is mounted on the lifting block, and the roller extends into the guide groove. After the paper roll on the paper roll mounting shaft is used up, the paper roll tightens, increasing the tension. The lifting block is pulled upwards, and the rising lifting block drives the roller, which rolls along the guide groove. The guide groove and roller, on the one hand, limit the lifting block by confining the roller within the guide groove, preventing the lifting block and its movable roller from rotating along the guide rod. The number of guide rods can be one or two. With the above arrangement, only one guide rod is needed, simplifying the guide rod arrangement. On the other hand, after the roller is mounted on the lifting block, the roller and the movable roller are located on opposite sides of the lifting block, allowing for more balanced force distribution on the lifting block. This avoids uneven force distribution on the lifting block when the movable roller is mounted on one side, which would affect the smoothness and stability of the lifting block's movement.

[0011] Furthermore, the roller and the movable roller are located on both sides of the lifting block, and the axis of the roller is coaxial with the axis of the movable roller.

[0012] Furthermore, a spring is fitted onto the guide rod, located below the lifting block. When the exhausted paper roll is removed, and the paper roll loses tension, the lifting block and its movable roller fall downwards. The spring cushions the fall of the lifting block, reducing the impact force and preventing damage to the lifting block and its movable roller due to excessive impact. The spring is mounted on the guide rod, allowing for stable deformation of the spring without adding other components or complicating the structure.

[0013] Furthermore, the movable roller is located on the paper roll supply path between the two guide rollers, and its position is lower than that of the adjacent guide rollers on both sides. This arrangement increases the vertical component of the force exerted by the paper roll on the movable roller, while reducing the horizontal component. The vertical component is in the same direction as the lifting block and assists in its upward movement, while the horizontal component does not assist in its upward movement; on the contrary, it increases the friction between the lifting block and the linear guide rail, affecting the upward movement of the lifting block and creating resistance. This invention, by increasing the vertical component of the force exerted by the paper roll on the movable roller and reducing the horizontal component, increases the assistance in the movement of the lifting block on the linear guide rail, reduces resistance, and makes the movement of the lifting block on the linear guide rail smoother.

[0014] Furthermore, the paper roll supply path between the movable roller and its adjacent guide rollers is perpendicular. The horizontal projections of the movable roller and the guide rollers on both sides are tangent. This arrangement ensures that the horizontal component of the force exerted by the paper roll on the movable roller is zero, and the force exerted by the paper roll on the movable roller is entirely in the vertical direction, forming a pulling force. In other words, the force exerted by the paper roll on the movable roller only provides assistance and has no resistance, making the lifting block move more smoothly on the linear guide rail.

[0015] Furthermore, the number of detection units is two, and the two detection units are arranged horizontally. With this arrangement, the upward travel distance when the paper roll is exhausted is evenly distributed across the two detection units. That is, if only one detection unit is used and the upward displacement of the movable roller is D, then with two detection units, the upward displacement of each movable roller is D / 2. The upward displacement of the movable roller is smaller, and the installation height of the position sensor is also smaller. Thus, the overall height space required for installing the paper roll exhaustion detection mechanism is also smaller, greatly facilitating the installation and allowing for a more rational layout.

[0016] Furthermore, the position sensor is a contact sensor or a proximity sensor.

[0017] This invention relates to a paper roll supply system with paper roll exhaustion detection. By incorporating a paper roll exhaustion detection mechanism along the paper roll supply path, and utilizing the structural features of the detection unit (including a linear guide rail, a lifting block, and a movable roller), the change in paper roll exhaustion is translated into positional changes of the lifting block and the movable roller. This is then combined with a position sensor to sense the position of the lifting block, thereby achieving automatic detection of paper roll exhaustion. This paper roll supply system with paper roll exhaustion detection can detect the paper roll exhaustion status in real time and accurately, laying the foundation for subsequent automatic roll changing and continuous feeding. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the paper roll supply system with paper roll exhaustion detection according to this utility model; Figure 2 This is a schematic diagram of the main structure of the paper roll supply system with paper roll exhaustion detection of this utility model; Figure 3 This is a schematic diagram of the paper roll exhaustion detection mechanism of the paper roll supply system with paper roll exhaustion detection of this utility model. Detailed Implementation

[0019] The preferred embodiment of the paper roll supply system with paper roll exhaustion detection of this utility model will be described in detail below with reference to the accompanying drawings: like Figures 1 to 3 As shown, a paper roll supply system with paper roll exhaustion detection includes a machine plate 10. A paper roll mounting shaft 1 and several guide rollers 2 are mounted on the machine plate 10. A paper roll 100 is mounted on the paper roll mounting shaft 1. The paper roll 100 is wound around the guide rollers 2 and pulled by the guide rollers 2 to form a paper roll supply path 101. A paper roll exhaustion detection mechanism 3 is provided on the paper roll supply path 101. The paper roll exhaustion detection mechanism 3 includes a detection unit 30 and a position sensor 34. The detection unit 30 includes a linear guide rail 3. 1. Lifting block 32 and movable roller 33, the linear guide rail 31 is vertically arranged and installed on the machine plate 10, the lifting block 32 is slidably installed on the linear guide rail 31, the movable roller 33 is installed on the lifting block 32, the axis of the movable roller 33, the axis of the paper roll mounting shaft 1 and the axis of the guide roller 2 are all parallel, the paper roll 100 on the paper roll supply path 101 is wound around the bottom of the movable roller 33, and the position sensor 34 is located on the side of the linear guide rail 31.

[0020] This utility model relates to a paper roll supply system with paper roll exhaustion detection. The paper roll mounting shaft 1 is used to mount the paper roll 100; the guide roller 2 is used to pull the paper roll 100; and the paper roll exhaustion detection mechanism 3 is used to detect whether the paper roll 100 mounted on the paper roll mounting shaft 1 is exhausted. In the paper roll exhaustion detection mechanism 3, the lifting block 32 is slidably mounted on the linear guide rail 31 and can move up and down along the linear guide rail 31; the paper roll 100 on the paper roll supply path 101 passes under the movable roller 33 and is wound around the bottom of the movable roller 33, and the movable roller 33 is linked with the paper roll 100; the position sensor 34 is used to sense the position signal of the lifting block 32.

[0021] This utility model has a paper roll supply system with paper roll exhaustion detection. The paper roll 100 is installed on the paper roll mounting shaft 1 and is pulled to the isolation paper station via the guide roller 2. As the isolation paper is continuously consumed at the station, the paper roll 100 is unwound to achieve continuous supply.

[0022] This invention relates to a paper roll supply system with paper roll exhaustion detection. When the paper roll 100 is exhausted, it is tightened, and the tension gradually increases. As the paper roll 100 is tightened, the movable roller 33 is pulled upward, causing the lifting block 32 to move upward along the linear guide rail 31. The upward movement of the lifting block 32 triggers the position sensor 34. Once the position sensor 34 senses the upward movement of the lifting block 32, it indicates that the paper roll is exhausted, thus achieving automatic detection of paper roll exhaustion.

[0023] This invention relates to a paper roll supply system with paper roll exhaustion detection. By setting a paper roll exhaustion detection mechanism 3 on the paper roll supply path 101, and utilizing the structural features of the detection unit 30, which includes a linear guide rail 31, a lifting block 32, and a movable roller 33, the change in paper roll exhaustion is converted into positional changes of the lifting block 32 and the movable roller 33. Then, combined with the position sensor 34, the position of the lifting block 32 is sensed, achieving automatic detection of paper roll exhaustion. This paper roll supply system with paper roll exhaustion detection can detect the exhaustion state of the paper roll in real time and accurately, laying the foundation for subsequent automatic roll changing and continuous feeding.

[0024] This utility model relates to a paper roll supply system with paper roll exhaustion detection. Preferably, the linear guide rail 31 includes a guide rod 311, which is vertically arranged, and the lifting block 32 is slidably mounted on the guide rod 311. The linear guide rail 31 can be a T-shaped guide rail, a guide rod, or a guide groove. Compared with other types, the guide rod is easier to source and install.

[0025] This utility model has a paper roll supply system with paper roll exhaustion detection. Preferably, the lifting block 32 is a bushing, and the bushing is movably mounted on the guide rod 311.

[0026] This invention relates to a paper roll supply system with paper roll exhaustion detection. Preferably, the linear guide rail 31 further includes a guide groove 312, which is vertically arranged. A roller 321 is mounted on the lifting block 32, and the roller 321 extends into the guide groove 312. After the paper roll 100 on the paper roll mounting shaft 1 is used up, the paper roll 100 tightens, increasing the tension. The lifting block 32 is pulled upward, and the rising lifting block 32 drives the roller 321, which rolls along the guide groove 312. The guide groove 312 and the roller 321, on the one hand, limit the lifting block 32 by confining the roller 321 within the guide groove 312, thereby preventing the lifting block 32 and its movable roller 33 from rotating along the guide rod 311. The number of guide rods 311 can be one or two. After the above settings are implemented, the number of guide rods 311 can be reduced to one, simplifying the configuration of the guide rods 311. On the other hand, after the roller 321 is installed on the lifting block 32, the roller 321 and the movable roller 33 are located on opposite sides of the lifting block 32, allowing for a more balanced force distribution on the lifting block 32. This avoids the situation where the movable roller 33 is installed on one side of the lifting block 32, resulting in uneven force distribution and affecting the smoothness and stability of the lifting block 32's movement.

[0027] The present invention has a paper roll supply system with paper roll exhaustion detection. Preferably, the roller 321 and the movable roller 33 are located on both sides of the lifting block 32, and the axis of the roller 321 is coaxial with the axis of the movable roller 33.

[0028] This invention relates to a paper roll supply system with paper roll exhaustion detection. Preferably, a spring 35 is fitted onto the guide rod 311, and the spring 35 is located below the lifting block 32. When the exhausted paper roll is removed, after the paper roll loses tension, the lifting block 32 and its movable roller 33 fall downwards. The spring 35 buffers the fall of the lifting block 32, reducing the impact force and preventing damage to the lifting block 32 and its movable roller 33 due to excessive impact. The spring 35 is mounted on the guide rod 311. Without adding other components and complicating the structure, the existing guide rod 311 guides the deformation of the spring 35, ensuring stable deformation without increasing structural complexity.

[0029] This invention relates to a paper roll supply system with paper roll exhaustion detection. Preferably, the movable roller 33 is located on the paper roll supply path 101 between the two guide rollers 2, and the position of the movable roller 33 is lower than the positions of the adjacent guide rollers 2 on both sides. This arrangement increases the vertical component of the force exerted by the paper roll on the movable roller 33, while reducing the horizontal component. The vertical component is in the same direction as the lifting block 32, assisting the lifting block 32 in its ascent, while the horizontal component does not assist the lifting block 32 in its ascent; on the contrary, it increases the friction between the lifting block 32 and the linear guide rail 31, affecting the ascent of the lifting block 32 and creating resistance to its ascent. This invention, by increasing the vertical component of the force exerted by the paper roll on the movable roller 33 and reducing the horizontal component, increases the assistance for the lifting block 32 in its movement on the linear guide rail 31, reduces resistance, and makes the movement of the lifting block 32 on the linear guide rail 31 smoother.

[0030] This invention relates to a paper roll supply system with paper roll exhaustion detection. Preferably, the paper roll supply path 101 between the movable roller 33 and its adjacent guide roller 2 is perpendicular. The horizontal projections of the movable roller 33 and the guide rollers 2 on both sides are tangent. This arrangement ensures that the horizontal component of the force exerted by the paper roll on the movable roller 33 is zero, and the force exerted by the paper roll on the movable roller 33 is entirely in the vertical direction, forming a pulling force. In other words, the force exerted by the paper roll on the movable roller 33 only provides assistance and has no resistance, making the movement of the lifting block 32 on the linear guide rail 31 smoother.

[0031] This utility model relates to a paper roll supply system with paper roll exhaustion detection. Preferably, the number of detection units 30 is two, and the two detection units 30 are arranged horizontally. With this arrangement, the upward stroke when the paper roll is exhausted is evenly distributed across the two detection units 30. That is, if only one detection unit 30 is used, and the upward displacement of the movable roller 33 is D, then with two detection units 30, the upward displacement of each movable roller 33 is D / 2. The upward displacement of the movable roller 33 is smaller, and the installation height of the position sensor 34 is also smaller. Thus, the overall height space required for installing the paper roll exhaustion detection mechanism 3 is also smaller, greatly facilitating the installation and allowing for a more rational layout.

[0032] This invention relates to a paper roll supply system with paper roll exhaustion detection, wherein the position sensor 34 is a contact sensor or a proximity sensor.

[0033] For those skilled in the art to which this utility model pertains, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the protection scope of this utility model.

Claims

1. A paper roll supply system with paper roll exhaustion detection, comprising a machine plate, wherein a paper roll mounting shaft and a plurality of guide rollers are mounted on the machine plate, a paper roll is mounted on the paper roll mounting shaft, the paper roll is wound around the guide rollers and pulled by the guide rollers to form a paper roll supply path, characterized in that: A paper roll depletion detection mechanism is provided on the paper roll supply path. The paper roll depletion detection mechanism includes a detection unit and a position sensor. The detection unit includes a linear guide rail, a lifting block, and a movable roller. The linear guide rail is vertically arranged and mounted on the machine plate. The lifting block is slidably mounted on the linear guide rail. The movable roller is mounted on the lifting block. The axis of the movable roller, the axis of the paper roll mounting shaft, and the axis of the guide roller are all parallel. The paper roll on the paper roll supply path is wound around the bottom of the movable roller. The position sensor is located on the side of the linear guide rail.

2. The paper roll supply system with paper roll exhaustion detection according to claim 1, characterized in that: The linear guide rail includes a guide rod, which is vertically arranged, and the lifting block is slidably mounted on the guide rod.

3. The paper roll supply system with paper roll exhaustion detection according to claim 2, characterized in that: The lifting block is a bushing, which is movably fitted onto the guide rod.

4. The paper roll supply system with paper roll exhaustion detection according to claim 2, characterized in that: The linear guide rail also includes a guide groove, which is vertically arranged, and a roller is installed on the lifting block, with the roller extending into the guide groove.

5. The paper roll supply system with paper roll exhaustion detection according to claim 4, characterized in that: The roller and the movable roller are located on both sides of the lifting block, and the axis of the roller is coaxial with the axis of the movable roller.

6. The paper roll supply system with paper roll exhaustion detection according to claim 2, characterized in that: A spring is fitted onto the guide rod, and the spring is located below the lifting block.

7. The paper roll supply system with paper roll exhaustion detection according to claim 1, characterized in that: The movable roller is located on the paper roll supply path between the two guide rollers, and the position of the movable roller is lower than the positions of the two adjacent guide rollers.

8. The paper roll supply system with paper roll exhaustion detection according to claim 7, characterized in that: The paper roll supply path between the movable roller and its adjacent guide roller is perpendicular.

9. The paper roll supply system with paper roll exhaustion detection according to claim 1, characterized in that: The number of detection units is two, and the two detection units are arranged horizontally.

10. The paper roll supply system with paper roll exhaustion detection according to claim 1, characterized in that: The position sensor is a contact sensor or a proximity sensor.

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