Film-drawing shearing roller mechanism and using method

Abstract

The invention provides a film drawing and roller shearing mechanism and a using method, and belongs to the field of film drawing and unwinding. Comprising a mounting base plate; a square guide rail is arranged on one side of the mounting base plate, and a transition plate is fixedly arranged on the mounting base plate and outside the square guide rail; a film roll mounting frame is arranged on the mounting base plate; a fastening platform is arranged on the transition plate, a first air pump clamping wheel and a second air pump clamping wheel are oppositely arranged on the fastening platform up and down, the second air pump clamping wheel is fixedly connected with the fastening platform, the first air pump clamping wheel is arranged over the second air pump clamping wheel and connected with a damper through a swing arm, and the damper is fixed to a support. And a film is placed between the first air pump clamping wheel and the second air pump clamping wheel. According to the film-drawing and roller-shearing mechanism and the using method, bubbles and wrinkles caused by spreading and layering of the thin film can be reduced, and the quality of the unwound thin film is improved.

Description

Technical Field

[0001] This application relates to the field of film stretching and unwinding technology, and in particular to a film stretching shearing roller mechanism and its usage method. Background Technology

[0002] In modern industrial production, film stretching technology is widely used in numerous fields, such as packaging, printing, and electronics. As a key front-end piece of equipment in the film stretching production line, the performance of the film stretching unwinding machine directly affects the quality and efficiency of subsequent processes. With the increasing demands for product quality across industries, especially in applications requiring extremely high film flatness, stability, and precision, the role of the film stretching unwinding machine is becoming increasingly prominent. Currently, film stretching unwinding machines are widely used in the market, and with technological advancements, they have seen improvements in automation, unwinding speed, and film handling capacity. However, different industries and companies have varying needs for film stretching unwinding machines. Some high-end applications pose even greater challenges to film quality, prompting the industry to continuously explore more advanced film stretching unwinding technologies.

[0003] The technologies commonly used in current film unwinding machines mainly revolve around film transmission and tension control. For film transmission, a motor is typically used to drive the roll, transmitting power to the film roll via belts, chains, or gears, allowing the film to be continuously unwound from the roll. Simultaneously, to ensure the stability of the film during transmission, guide rollers and tension rollers are usually installed to guide the film's direction and maintain a certain tension.

[0004] Although existing technologies can achieve transmission and tension control of films to a certain extent, the inherent characteristics of films (such as thinness, softness, and easy deformation) and various complex factors in the unwinding process (such as layer control, friction deformation, and installation errors) make it difficult to accurately control the motion precision of films during transmission. When multiple layers of films are stacked and unwound, the relative motion between the layers is prone to inconsistency, resulting in wrinkles and curling on the film surface, which affects the flatness and quality of the film. Summary of the Invention

[0005] In view of this, this application provides a film pulling and shearing roller mechanism and a method of using it, which can reduce bubbles and wrinkles caused by film unfolding and delamination, and improve the quality of unwinding film.

[0006] Specifically, this application is implemented through the following technical solution:

[0007] A first aspect of this application provides a film stretching and shearing roller mechanism, the film stretching and shearing roller mechanism comprising:

[0008] Mounting base plate, which is fixed to the main frame of the equipment to fix the film pulling and shearing roller mechanism;

[0009] A square guide rail is provided on one side of the mounting base plate and is fixedly installed on the base plate. A transition plate is provided on the outside of the square guide rail. The transition plate can adjust the position of the fastening platform on the transition plate in the film roll width direction by moving horizontally on the square guide rail.

[0010] The mounting base plate is provided with a film roll mounting frame, which is located on the side of the mounting base plate close to the square guide rail. The length direction of the film roll mounting frame is perpendicular to the length direction of the square guide rail. The film roll is mounted on the film roll mounting frame by bearings. The film roll is extended by rotating perpendicular to the movement direction of the transition plate on the square guide rail.

[0011] A fastening platform is provided on the transition plate. A first air pump clamping wheel and a second air pump clamping wheel are arranged vertically opposite each other on the fastening platform. The second air pump clamping wheel is fixedly connected to the fastening platform. The first air pump clamping wheel is located directly above the second air pump clamping wheel. The space between the first air pump clamping wheel and the second air pump clamping wheel is used to place the film that extends out after the film roll is stretched. The first air pump clamping wheel is connected to a damper through a swing arm. The damper is fixed on a support. One end of the swing arm is connected to the axle of the first air pump clamping wheel, and the other end is fixedly connected to the support. The middle part of the swing arm is connected to the movable connecting rod of the damper through a shaft pin. The two air pump clamping wheels move towards each other under the control of the air pump to clamp the film.

[0012] A second aspect of this application provides a method for stretching film with a shearing roller, the method comprising:

[0013] Install the film roll onto the film roll mounting frame and complete the initial parameter adjustment;

[0014] The motor is started to drive the film roll to rotate, so that the film begins to stretch and the first air pump clamping wheel and the second air pump clamping wheel are controlled to clamp the film.

[0015] During the film transmission process, the film position and tension are adjusted according to the real-time status.

[0016] The film stretching and shearing roller mechanism and its usage method provided in this application clamp the film using an air pump-controlled clamping wheel. The friction between the cylindrical clamping wheel and the film achieves film tension. During film transmission, the clamping force of the air pump clamping wheel can be adjusted in real time as needed. Combined with a damper, the opening angle of the clamping wheel is precisely adjusted to maintain stable film tension, effectively preventing wrinkles caused by uneven tension during transmission and avoiding air bubbles due to delamination. This significantly improves the flatness and quality of the unfolded film. The square guide rail and transition plate design allows for smooth horizontal movement of the external transition plate via a slider. The movement range can be determined according to equipment design and actual working requirements, covering common film widths. This allows the mechanism to easily adapt to films of different widths. In actual production, companies may need to handle films of various specifications. This design eliminates the need to change equipment parts; simply adjusting the position of the transition plate ensures that the air pump clamping wheel accurately aligns with the edges of films of different widths, ensuring uniform force on the film during clamping, tensioning, and transmission. This improves the equipment's versatility and adaptability, and reduces production costs.

[0017] This film stretching and shearing roller mechanism achieves precise control of film tension through the coordinated work of components such as the air pump clamping wheel, damper, and fastening platform. During equipment operation, the components cooperate with each other and automatically adjust according to the actual situation of the film, so that the film can maintain stable tension under different working conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the film-pulling shearing roller mechanism provided in this application;

[0019] Figure 2 As shown in this application Figure 1 The main view;

[0020] Figure 3 For the purpose of the application Figure 1 A sectional view;

[0021] Explanation of reference numerals in the attached figures:

[0022] 1-Fastening platform; 2-First air pump clamping wheel; 3-Damper; 4-Ratchet wrench; 5-Square guide rail; 6-Second air pump clamping wheel; 7-Mounting base plate; 8-Air pump; 9-Transition plate; 10-Support; 11-Swing arm; 12-Cylindrical clamping device. Detailed Implementation

[0023] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0024] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used herein are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0025] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0026] The following specific embodiments are given to illustrate the technical solution of this application in detail.

[0027] Figure 1 This is a schematic diagram of the film-pulling shearing roller mechanism provided in this application. Please refer to... Figure 1 The film-pulling and shearing roller mechanism provided in this embodiment includes:

[0028] Mounting base plate 7, which is fixed to the main frame of the equipment to fix the film pulling and shearing roller mechanism;

[0029] A square guide rail 5 is provided on one side of the mounting base plate 7 and is fixed on the mounting base plate 7. Preferably, it can be connected by bolts. A transition plate 9 is provided on the outside. The transition plate 9 moves horizontally on the square guide rail 5. Specifically, the transition plate moves horizontally by means of a slider cooperating with the square guide rail. The position of the fastening platform 1 on the transition plate 9 in the film roll width direction is adjusted.

[0030] The mounting base plate 7 is provided with a film roll mounting frame, which is located on the side of the mounting base plate 7 close to the square guide rail 5. The length direction of the film roll mounting frame is perpendicular to the length direction of the square guide rail. The film roll is extended by rotating perpendicular to the movement direction of the transition plate on the square guide rail. Optionally, the film roll is mounted on the film roll mounting frame by bearings. The axis of the film roll passes through the shaft hole of the film roll mounting frame and is supported by the bearings, so that the film roll can rotate freely around the axis.

[0031] A fastening platform 1 is provided on the transition plate 9. Optionally, the fastening platform 1 is fixedly connected to the transition plate 9 by bolts. A first air pump clamping wheel 2 and a second air pump clamping wheel 6 are arranged vertically opposite each other on the fastening platform 1. The second air pump clamping wheel 6 is fixedly connected to the fastening platform 1. The first air pump clamping wheel 2 is located directly above the second air pump clamping wheel 6. The space between the first air pump clamping wheel 2 and the second air pump clamping wheel 6 is used to place the film that extends out after the film roll is stretched. The first air pump clamping wheel 2 is connected to the damper 3 through a swing arm 11. The damper 3 is fixed on the support 10. One end of the swing arm 11 is connected to the axle of the first air pump clamping wheel 2, and the other end is fixedly connected to the support 10. Optionally, it can be connected by a pin, and the middle part of the swing arm is connected to the movable connecting rod of the damper 3 through a pin. The two air pump clamping wheels move towards each other under the control of the air pump to clamp the film. In addition, the damper 3 is also fixed on the support 10 by a mounting bracket.

[0032] Two clamping rollers, controlled by an air pump, move towards each other to clamp the film. Specifically, vertically, the first air pump clamping roller is positioned above, and the second air pump clamping roller is positioned below, forming an upper and lower clamping grip on the film. Horizontally, a swing arm is located to one side of the first air pump clamping roller, and a damper is fixed to the same side of the swing arm via a support, with the damper parallel to the square guide rail. When the air pump controls the clamping rollers to clamp the film, the first air pump clamping roller moves downward under the force of the air pump, while the second air pump clamping roller remains fixed. The swing arm rotates around the axis connected to the support, driving the movable connecting rod of the damper to move. Due to the structural design and installation position of the swing arm and damper, they will not collide during movement, ensuring the stable operation of the entire mechanism. During operation, the film roll is installed on the film roll, which is driven to rotate by a motor via a belt or chain, thereby continuously extending the film. The transition plate 9 moves on the square guide rail according to the film width and equipment debugging requirements. The first air pump clamping wheel 2 and the second air pump clamping wheel 6 clamp the film under the control of the air pump, realizing the tensioning and transmission of the film.

[0033] Figure 2 As shown in this application Figure 1 The main view, Figure 3 For the purpose of the application Figure 1 Please refer to the sectional view as well. Figure 1 , Figure 2 and Figure 3 The mounting base plate 7, as the core load-bearing component of the entire film stretching and shearing roller mechanism, is tightly connected to the main frame of the equipment with bolts, firmly fixing the film stretching and shearing roller mechanism into the overall structure of the equipment. This fixing method ensures the stability of the mechanism during equipment operation, provides a solid mounting foundation for other components, and enables the entire mechanism to withstand various forces generated during film stretching, such as film tension and friction from roller rotation, without displacement or shaking.

[0034] In addition, a film roll mounting bracket is provided on the mounting base plate 7, which provides support and positioning for the installation and rotation of the film roll, so that the film roll can work at the appropriate position and height, ensuring that the film can be smoothly unrolled from the roll and enter the subsequent processing stage.

[0035] It should also be noted that the square guide rail 5 is bolted to the mounting base plate 7, ensuring its secure installation and accurate positioning. The external transition plate 9 cooperates with the square guide rail 5 via a slider. This cooperation allows the transition plate 9 to move smoothly horizontally on the square guide rail 5, and the range of movement of the transition plate 9 can be determined according to the design requirements of the equipment and actual working needs, generally covering the common film width range.

[0036] Regarding the shape of the transition plate 9, it typically needs to possess a certain degree of flatness and strength. Flatness ensures that components such as the fastening platform and air pump clamping wheels mounted on it remain in a stable, planar state, preventing installation deviations due to unevenness on the transition plate 9's surface, which could affect the film clamping and transmission effects. In terms of strength, the transition plate 9 must be able to withstand its own weight and that of the mounted components. Furthermore, during film stretching, it must resist various external forces generated by position adjustments and film movement. Therefore, it is usually made from a metal sheet of a certain thickness.

[0037] In terms of shape design, the shape of the transition plate 9 needs to be adapted to the square guide rail 5. The part of the transition plate 9 that mates with the square guide rail 5 should be designed with a structure that fits the slider to ensure that the slider can be stably mounted on the transition plate 9 and slide smoothly on the square guide rail 5. In addition, the shape of the transition plate 9 also needs to take into account the spatial relationship with the mounting base plate 7 and other adjacent components to avoid interference with other components during movement.

[0038] Based on the above description, the transition plate 9 is equipped with the fastening platform 1 and related components such as the air pump clamping rollers. Therefore, the horizontal movement of the transition plate 9 directly affects the lateral position of these upper components relative to the film roll. In actual operation, when processing films of different widths, moving the transition plate 9 allows the air pump clamping rollers to be accurately positioned at the appropriate location on the film, ensuring that the film can smoothly enter between the clamping rollers and remain on the correct track during clamping and transmission, avoiding problems such as film misalignment and wrinkles.

[0039] It should be noted that the film roll mounting bracket is installed on the mounting base plate. Its internal structure is designed to accommodate the film roll, which is mounted on the bracket via bearings. The use of bearings significantly reduces friction during roll rotation, allowing the roll to rotate freely around its axis. This free rotation characteristic is crucial for the smooth unwinding of the film, ensuring the uniformity and stability of the film as it unfolds from the roll, and reducing problems such as uneven film stretching, tearing, or wrinkling that may occur due to inflexible roll rotation. After the film roll is mounted on the mounting base, it begins to rotate under the drive of a motor via a belt or chain, continuously extending the film from the roll. The position and structural design of the film roll mounting bracket ensure a good initial state for the film during unfolding, providing a stable film supply for subsequent clamping, tensioning, and transmission operations.

[0040] It should be noted that the fastening platform 1 is fixed to the transition plate 9 with bolts, providing an installation base for the first air pump clamping wheel 2 and the second air pump clamping wheel 6. The second air pump clamping wheel 6 is rigidly connected to the fastening platform 1 through the support 10, ensuring its stability during operation. The first air pump clamping wheel 2 is located directly above the second air pump clamping wheel 6, with the two facing each other vertically, forming a space between them for placing the film. The first air pump clamping wheel 2 is connected to the damper 3 through the swing arm 11. The special connection method of the swing arm 11 (one end connected to the axle of the first air pump clamping wheel 2, the other end connected to the support 10, and the middle connected to the movable connecting rod of the damper 3) allows the damper 3 to influence the movement of the first air pump clamping wheel 2. Specifically, refer to... Figure 1The damper 3 is fixed to the support 10 by a mounting bracket and is located vertically between the air pump clamping wheel and the fastening platform 1. Specifically, it is located in the space below the first air pump clamping wheel 2 and above the fastening platform 1. Horizontally, the damper 3 is set parallel to the square guide rail 5. If viewed along the length of the square guide rail 5, the damper 3 and the square guide rail 5 are arranged in a parallel relationship. From a side viewpoint, with the direction perpendicular to the square guide rail 5 as a reference, the damper 3 is located on one side of the first air pump clamping wheel 2 and on the same side as the second air pump clamping wheel 6 (because the first and second air pump clamping wheels are vertically aligned and connected to related components through the same support 10). One end of the swing arm 11 is connected to the axle of the first air pump clamping wheel 2, the other end is connected to the support 10, and the middle is connected to the movable connecting rod of the damper 3.

[0041] The air pump 8 is connected to the cylindrical clamping wheel in the air pump clamping wheel through the air circuit system. The connection relationship between the first air pump clamping wheel 2 and the second air pump clamping wheel 6 and the entire mechanism has been introduced above. Here, we will further explain the connection relationship between the air impeller inside the air pump clamping wheel, the cylindrical clamping wheel and the external structure, and the connection method of the air pump.

[0042] The air pump clamping wheel consists of an air impeller and a cylindrical clamping wheel. The first air pump clamping wheel 2 and the second air pump clamping wheel 6 are each equipped with an air impeller and a cylindrical clamping wheel. Each air impeller is connected to its corresponding cylindrical clamping wheel, and the air pump 8 is connected to the air impellers of the first air pump clamping wheel 2 and the second air pump clamping wheel 6 via an air circuit system.

[0043] The pneumatic wheel is used to control the corresponding cylindrical clamping wheels to move closer to or further away from each other in the direction of the film. Specifically, by controlling the air supply and exhaust of the air pump 8, the clamping and releasing actions of the cylindrical clamping wheels of the first air pump clamping wheel 2 and the second air pump clamping wheel 6 can be realized.

[0044] When the air pump 8 supplies air, the air circuit system delivers the air to the air wheel, which drives the internal piston to move. The piston pushes the corresponding cylindrical clamping wheel to move towards the film, causing the cylindrical clamping wheels of the first air pump clamping wheel 2 and the second air pump clamping wheel 6 to come closer to each other, thereby clamping the film.

[0045] Furthermore, the fastening platform 1 is connected to the bottom of the support 10 via bolts. During the membrane transmission process, sensors (such as photoelectric sensors and displacement sensors) positioned at appropriate locations detect the lateral or longitudinal positional deviation between the membrane and the air pump clamping wheel. These sensors monitor the positional relationship between the membrane edge and the clamping wheel edge in real time. Once a deviation exceeds the allowable range, a deviation signal is sent to the control system. Based on the received signal, the control system determines the positional deviation of the membrane, including the direction and magnitude of the deviation, thereby determining the direction and magnitude of the angle adjustment required for the fastening platform 1.

[0046] When the fastening platform 1 rotates the support 10 and the fastening platform 1 as a whole to adjust the angle of the air pump clamping wheel, the film and the clamping wheel can be restored to their normal alignment. For example, if the film is offset laterally, adjusting the clamping wheel angle can make the film edge parallel to the edge of the clamping wheel again, ensuring that the film is evenly stressed between the clamping wheels and avoiding wrinkles or stretching deformation caused by uneven local stress. When adjusting longitudinal position deviation, it can also keep the film in the correct position in the transmission direction, preventing the film from running off-center or interfering with other components.

[0047] Combining the aforementioned film stretching and shearing roller mechanism, at the start of operation, the film roll is first correctly installed on the film roll, ensuring that one end of the film can smoothly pass between the first and second air pump clamping rollers. Using the center line connecting the two air pump clamping rollers as the dividing line, one end of the film extends to the side furthest from the film roll. Then, the motor is started, and its power is transmitted to the film roll via belt or chain drive, causing the film roll to rotate, and the film gradually extends from the roll. Next, depending on the film width and specific equipment adjustment requirements, the transition plate is moved to the appropriate position on the square guide rail using manual or automatic control methods (such as motor-driven sliders or manual rotation of adjusting screws). During this process, the transition plate moves the fastening platform, air pump clamping rollers, and other components on it, ensuring that the air pump clamping rollers are accurately aligned with the edge of the film, preparing for subsequent clamping operations. Finally, once the transition plate is in position, the air pump starts working, controlling the first and second air pump clamping rollers to clamp the film. At this point, the film is stretched under the friction of the clamping wheels, and its internal tension gradually increases.

[0048] Specifically, the initialization process of the film stretching and shearing roller mechanism is as follows: When installing the film, place the film roll on the film roll mounting frame so that one end of the film can pass smoothly between the first air pump clamping wheel 2 and the second air pump clamping wheel 6. Using the center line connecting the two air pump clamping wheels as the dividing line, extend one end of the film to the side away from the film roll. Rotate the adjustment knob on the square guide rail 5 to move the slider on the guide rail, thereby adjusting the position of the transition plate 9 and the upper components, so that the air pump clamping wheel is aligned with the initial position of the film. By rotating the adjustment screw on the fastening platform 1, change the angle between the fastening platform 1 and the support 10 to achieve the initial angle adjustment of the fastening platform 1. By adjusting the pressure regulating valve on the pneumatic pump, change the air supply pressure, thereby adjusting the initial clamping force of the air pump clamping wheel on the film.

[0049] It should also be noted that the stretched film is continuously driven forward by the motor-driven film roll. During this transmission process, the film tension is monitored in real time by pressure sensors and other detection devices. The air pump clamping wheel adjusts the clamping force in a timely manner based on the tension feedback information, and the damper continuously plays a role in stabilizing the tension. At the same time, the stability of the entire mechanism and the coordinated work of each component ensure the film's positional accuracy in the lateral and longitudinal directions, enabling the film to be transmitted evenly and smoothly, providing high-quality film material for subsequent processes. If problems such as film position deviation or uneven tension occur during transmission, they can be corrected in time by corresponding adjustment devices (such as using a ratchet wrench to adjust the position of the air pump clamping wheel or rotating the fastening platform to adjust the angle of the clamping wheel), ensuring that the film always maintains a good transmission state. Specifically, through the coordinated action of the air pump clamping wheel, damper, and fastening platform, the entire assembly can adapt to different film specifications, different unwinding speeds, and various on-site working conditions.

[0050] Please continue to refer to Figure 1 The first platform includes a ratchet wrench 4, a cylindrical clamping device 12, and bolts. The cylindrical clamping device 12 is bolted to the side of the square guide rail 5 and fixedly connected to the side of the square guide rail from above. The ratchet wrench 4 is located on the side of the cylindrical clamping device 12, and its shaft meshes with a ratchet mechanism inside the cylindrical clamping device 12. When the ratchet wrench 4 is rotated, it drives the ratchet mechanism to rotate. The ratchet mechanism is connected to the air pump clamping wheel or its related components, thereby causing the air pump clamping wheel or swing arm to shift or rotate, thus adjusting the film tension or position. The cylindrical clamping device 12, as a key structure of the first platform, is precisely attached to the side of the square guide rail by bolts, and is also fixed from above by bolts. This double bolt fastening design ensures that the cylindrical clamping device maintains its structural and positional stability even when subjected to external forces such as vibration and tension during film stretching during equipment operation.

[0051] It should be noted that when the ratchet wrench (which can rotate 90°) is turned, the wrench's shaft precisely transmits torque to the ratchet mechanism inside the cylindrical clamping device. The ratchet mechanism, with its ingenious construction, converts rotational motion into linear or angular displacement. Through connecting rods, drive shafts, and other components, the motion is further transmitted to the air pump clamping wheel or the swing arm. If directly connected to the air pump clamping wheel, the wrench's rotation causes a slight horizontal or vertical displacement of the clamping wheel on the guide rail or specific slide, thereby precisely adjusting the lateral or longitudinal position of the film. If connected to the swing arm, the swing arm rotates around its axis, causing the air pump clamping wheel to change its angle, achieving the same effect of adjusting the film's position. Furthermore, when the ratchet wrench is turned, causing the air pump clamping wheel to move, the contact area and pressure distribution between the clamping wheel and the film change accordingly. By precisely controlling the wrench's rotation amplitude and direction, the operator can fine-tune the clamping wheel's grip on the film, thereby adjusting the film's tension.

[0052] Specifically, during the continuous film stretching operation, the film is prone to positional deviation and unstable tension due to factors such as uneven material and fluctuations in unwinding speed. The existence of the first platform gives operators the ability to intervene and adjust in real time. Once an abnormality in the film is detected by the naked eye or sensors, the ratchet wrench can be turned immediately to quickly and accurately correct the position and tension of the film, maintain a stable and high-quality transmission state of the film, and effectively reduce the defect rate.

[0053] It should also be noted that the film stretching and shearing roller mechanism provided in this application also includes a detection device, and the detection process of the detection device is as follows:

[0054] (1) The detection device detects in real time the moving speed and edge of the film extending from between the first air pump clamping wheel and the second air pump clamping wheel.

[0055] It should be noted that the detection device can quickly and accurately acquire information about the film's movement speed and the film's edge in real time through corresponding sensors or data acquisition systems.

[0056] (2) Based on the moving speed and the protrusion state of the edge recognition film.

[0057] Specifically, the outer boundary of the film, parallel to the gap between the first and second air pump clamping wheels (i.e., the film's outer boundary), is used as the detection marker to detect the film's moving speed. Simultaneously, the angle between this boundary and the gap determines the extension state. If the moving speed is less than the film shaft's rotation speed, it indicates excessive pressure in the gap, requiring readjustment. Furthermore, if the film boundary remains parallel to the gap, it indicates the absence of any localized foreign objects obstructing the extension process. The extension state includes both the engagement state of the clamping wheels and the film shaft's rotation, and the presence of foreign objects within the film itself.

[0058] (3) Determine the air pressure adjustment values ​​of the first air pump clamping wheel and the second air pump clamping wheel and the rotation speed of the film shaft according to the extended state. After adjustment, the clamping force makes the film extension speed equal to the rotation speed of the film shaft.

[0059] Based on the identified film extension state, the detection device calculates and determines the required air pressure adjustment values ​​for the first and second air pump clamping rollers, as well as the rotational speed of the film shaft. By adjusting the air pressure, the clamping force of the clamping rollers on the film is changed, ensuring that the adjusted clamping force makes the film extension speed equal to the film shaft rotation speed, thereby guaranteeing the stability of the film transmission.

[0060] (4) Adjust the relative angle between the first air pump clamping wheel and the second air pump clamping wheel according to the extended state.

[0061] In the initial state, the first and second air pump clamping wheels are set parallel to each other, and the height of each position in the middle gap is the same. When the film boundary is not parallel to the middle gap, the end closer to the gap indicates that there is a foreign object stuck. At this time, in order not to affect the subsequent film extension, the height of the middle gap at the corresponding position of that end is increased, that is, an angle is generated between the first and second air pump clamping wheels. In the end where the height needs to be increased, the first and second air pump clamping wheels are moved away from each other for adjustment, while the relative positions of the first and second air pump clamping wheels remain unchanged at the other end. The film stretching and shearing roller mechanism provided in this application clamps the film using an air pump-controlled clamping wheel. The friction between the cylindrical clamping wheel and the film achieves film tension. During film transmission, the clamping force of the air pump clamping wheel can be adjusted in real time as needed. Combined with the precise adjustment of the clamping wheel's opening angle by a damper, this maintains stable film tension. This effectively prevents wrinkles caused by uneven tension during transmission and avoids air bubbles due to delamination, significantly improving the flatness and quality of the unfolded film. The design of the square guide rail and transition plate allows the mechanism to flexibly adjust the lateral position of the upper components, such as the air pump clamping wheel, according to the film width and equipment debugging requirements. Whether the film is narrow or wide, simply moving the transition plate ensures that the air pump clamping wheel accurately aligns with the film edge, allowing the equipment to adapt to film rolls of different widths without frequent component replacements. This greatly improves the equipment's ability to handle films of different specifications and enhances its versatility. The synergistic effect of the damper during the operation of the air pump clamping wheel precisely adjusts the opening angle of the cylindrical clamping wheel, thereby achieving precise control of film tension. Whether in the initial clamping stage of the film or during the transmission process, the film tension can be kept within a suitable range to avoid damage to the film or affect the transmission effect due to excessive or insufficient tension.

[0062] In addition, the equipment is relatively simple and convenient to operate. When installing the film, the initial setup of the equipment can be completed by rotating the adjustment knob on the square guide rail, adjusting the adjustment screw on the fastening platform, and adjusting the pneumatic pump pressure regulating valve. This includes aligning the air pump clamping wheel with the initial position of the film, adjusting the initial angle of the fastening platform, and setting the initial clamping force of the clamping wheel.

[0063] Corresponding to the aforementioned embodiment of a film-pulling and shearing roller mechanism, this application also provides a film-pulling and shearing roller method, the method comprising:

[0064] Install the film roll onto the film roll mounting frame and complete the initial parameter adjustment;

[0065] The motor is started to drive the film roll to rotate, so that the film begins to stretch and the first air pump clamping wheel and the second air pump clamping wheel are controlled to clamp the film.

[0066] During the film transmission process, the film position and tension are adjusted according to the real-time status.

[0067] Specifically, the adjustment process includes:

[0068] Rotate the square guide rail adjustment knob to align the transition plate with the first air pump clamping wheel and the second air pump clamping wheel and the film's initial position. Rotate the fastening platform adjustment screw to adjust the initial angle and adjust the pneumatic pump pressure regulating valve to set the initial clamping force.

[0069] During the process of the film starting to stretch and controlling the first air pump clamping wheel and the second air pump clamping wheel to clamp the film, the film tension is monitored in real time by a pressure sensor. The damper adjusts the opening angle of the cylindrical clamping wheel in the air pump clamping wheel according to the film tension and motion state to maintain the film tension stability.

[0070] When it is necessary to adjust the position or tension of the film, turn the ratchet wrench. The ratchet mechanism and connecting rod drive the air pump clamping wheel or swing arm to move or rotate, thereby adjusting the position or tension of the film. When the film has a positional deviation or uneven tension, the sensor detects the deviation signal and controls the fastening platform to rotate and adjust the angle, so that the film returns to the normal transmission state.

[0071] It should be noted that, firstly, the film roll should be placed stably on the film roll platform, ensuring that the axis of the film roll is aligned with the axis of the film roll, so that the film can unfold smoothly from the film roll. Secondly, on the square guide rail of the mounting base plate, rotate the adjustment knob. The adjustment knob is connected to the slider on the square guide rail. Rotating the adjustment knob will drive the slider to move horizontally on the square guide rail. The slider drives the transition plate and the fastening platform and air pump clamping wheel above it to move synchronously. By observing the relative position of the film roll and the air pump clamping wheel, adjust the transition plate to the appropriate position so that the air pump clamping wheel is aligned with the initial position of the film, ensuring that the film can accurately enter between the first air pump clamping wheel and the second air pump clamping wheel. Further, on the fastening platform, rotate the adjustment screw. The rotation of the adjustment screw will change the angle between the fastening platform and the support. The fastening platform is fixed to the transition plate with bolts, the support is connected to the fastening platform, the second air pump clamping wheel is fixed to the support, and the first air pump clamping wheel is connected to the support through a swing arm and a damper. By rotating the adjusting screw, the angle of the fastening platform is adjusted, which in turn adjusts the tilt angle of the air pump clamping wheel. This ensures that the air pump clamping wheel adheres better to the film in its initial state, guaranteeing uniform force on the film during clamping. Finally, the pressure regulating valve on the pneumatic pump is located. Adjusting this valve changes the air supply pressure, which directly affects the clamping force of the air pump clamping wheel on the film. Based on the film's material, thickness, and other characteristics, the air supply pressure is adjusted to a suitable value, thus setting the initial clamping force of the air pump clamping wheel on the film and ensuring that the film is in a proper taut state when the transmission begins.

[0072] After setting the initial parameters as described above, start the motor. The motor's power is transmitted to the film roll via a belt or chain, causing the film roll to rotate around its axis. As the film roll rotates, the film begins to extend from it. Simultaneously, control the air pump to supply air to the air pump clamping wheels. The air supply drives the pistons in the first and second air pump clamping wheels, causing the two cylindrical clamping wheels to move towards each other and clamp the film. At this point, the film is stretched under the friction of the clamping wheels and begins to move. During the film transmission process, pressure sensors are installed along the film's transmission path. These sensors monitor the film tension in real time, converting the monitored tension data into electrical signals and transmitting them to the control system. The damper is connected to the first air pump clamping wheel via a swing arm. When the pressure sensor detects a change in the membrane tension, such as an increase in membrane tension, the cylindrical clamping wheel tends to open. At this time, the shaft or related connecting parts of the cylindrical clamping wheel generate a force in the direction that causes the cylindrical clamping wheel to open. The internal mechanical structure of the damper interacts with the shaft or related connecting parts of the cylindrical wheel to generate a resistance in the opposite direction of opening. By limiting the speed and extent of the opening of the cylindrical clamping wheel, the damper adjusts the opening angle of the cylindrical clamping wheel in the air pump clamping wheel, thereby maintaining stable membrane tension and ensuring that the membrane will not wrinkle or break due to excessive or insufficient tension during transmission.

[0073] It should also be noted that if films of different widths need to be processed during production, or if a misalignment of the film in the width direction is detected, the square guide rail adjustment knob can be rotated again. As mentioned above, the adjustment knob moves the slider, transition plate, and the components above them horizontally, causing the air pump clamping wheel to move to the appropriate position in the width direction of the film and realign with the film edge, ensuring that the film does not shift during clamping and transmission. When a sensor (such as a photoelectric sensor, displacement sensor, etc.) detects a positional deviation of the film in the lateral or longitudinal direction, it transmits the deviation signal to the control system. Upon receiving the signal, the control system controls the fastening platform to rotate and adjust the angle. The fastening platform drives the support and the air pump clamping wheel on it to rotate as a whole, restoring the film and the clamping wheel to their normal alignment. If the film shifts laterally, the rotation of the fastening platform makes the film edge parallel to the edge of the clamping wheel again; if the film shifts longitudinally, the rotation adjustment of the fastening platform keeps the film in the correct position in the transmission direction, preventing the film from running off-center or interfering with other components.

[0074] When adjusting the film tension, turn the ratchet wrench. The ratchet wrench is mounted on the side of the cylindrical clamping device, and its shaft engages with the ratchet mechanism inside the cylindrical clamping device. When the ratchet wrench is turned, its shaft drives the ratchet mechanism to rotate. The ratchet mechanism is connected to the air pump clamping wheel or the swing arm via a connecting rod, which in turn causes the air pump clamping wheel to shift or the swing arm to rotate. The displacement of the air pump clamping wheel changes the contact pressure between it and the film, and the rotation of the swing arm indirectly affects the clamping force of the first air pump clamping wheel through the damper, ultimately achieving the adjustment of the film tension and ensuring that the film maintains appropriate tension under different operating conditions.

[0075] In addition, in practical implementation, the film roll is installed on the film roll mounting frame, and the initial parameters are adjusted, including:

[0076] (1) After the film roll is installed on the film roll mounting frame, the film on the film roll is pulled out and passed through the gap between the first air pump clamping wheel and the second air pump clamping wheel.

[0077] It should be noted that when the film pulling and shearing roller mechanism is running, after the film roll is installed on the film roll mounting frame and the film passes through the clamping roller, the relative position of the clamping roller and the film and the clamping force need to be determined according to the width of the film.

[0078] (2) Detect the width of the film, and determine the relative position between the first air pump clamping wheel, the second air pump clamping wheel and the film based on the width and the length of the first air pump clamping wheel and the second air pump clamping wheel parallel to the boundary of the film.

[0079] Once the film width is detected, the position of the transition plate on the square guide rail is adjusted according to a pre-set algorithm or empirical data, so that the first and second air pump clamping wheels are positioned at the appropriate edge of the film. For example, if the film is wide, the transition plate needs to be moved away from the film roll to ensure that the clamping wheels cover the edge of the film, keeping the film stable during clamping and transmission, and preventing the film from shifting in the width direction.

[0080] (3) Determine the clamping force of the first air pump clamping wheel and the second air pump clamping wheel based on the width and the length of the first air pump clamping wheel and the second air pump clamping wheel parallel to the film boundary, and complete the initial parameter adjustment.

[0081] The clamping force is determined based on the relationship between the film width and the length of the clamping wheels of the first and second air pumps parallel to the film boundary. When the film width is greater than the length of the clamping wheels parallel to the film boundary, a smaller clamping force is required to avoid excessive local stress and deformation of the film due to excessive clamping force. This is because a wider film distributes the clamping force over a larger area; if the clamping force is too large, the film is prone to tensile deformation in the width direction, affecting the film's flatness. Conversely, when the film width is less than the length of the clamping wheels parallel to the film boundary, the smaller film area bears a larger pressure per unit area when subjected to the same clamping force. In this case, the clamping force can be appropriately increased to ensure that the film is fully stretched, preventing slack during transmission and ensuring stable film transmission. By adjusting the clamping force according to the relationship between the film width and the clamping wheel size, the quality of film stretching can be effectively improved, reducing problems such as wrinkles and uneven stretching during film stretching.

[0082] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A film stretching and shearing roller mechanism, characterized in that, The film stretching and shearing roller mechanism includes: Mounting base plate, which is fixed to the main frame of the equipment to fix the film pulling and shearing roller mechanism; A square guide rail is provided on one side of the mounting base plate and is fixedly installed on the base plate. A transition plate is provided on the outside of the square guide rail. The transition plate can adjust the position of the fastening platform on the transition plate in the film roll width direction by moving horizontally on the square guide rail. The mounting base plate is provided with a film roll mounting frame, which is located on the side of the mounting base plate close to the square guide rail. The length direction of the film roll mounting frame is perpendicular to the length direction of the square guide rail. The film roll is mounted on the film roll mounting frame by bearings. The film roll is extended by rotating perpendicular to the movement direction of the transition plate on the square guide rail. A fastening platform is provided on the transition plate. A first air pump clamping wheel and a second air pump clamping wheel are arranged vertically opposite each other on the fastening platform. The second air pump clamping wheel is fixedly connected to the fastening platform. The first air pump clamping wheel is located directly above the second air pump clamping wheel. The space between the first air pump clamping wheel and the second air pump clamping wheel is used to place the film that extends out after the film roll is stretched. The first air pump clamping wheel is connected to a damper through a swing arm. The damper is fixed on a support. One end of the swing arm is connected to the axle of the first air pump clamping wheel, and the other end is fixedly connected to the support. The middle part of the swing arm is connected to the movable connecting rod of the damper through a shaft pin. The two air pump clamping wheels move towards each other under the control of the air pump to clamp the film.

2. The mechanism according to claim 1, characterized in that, The damper is positioned vertically between the air pump clamping wheel and the fastening platform, parallel to the square guide rail, and fixed to the support by a mounting bracket, not on the same horizontal plane as the air pump clamping wheel and the fastening platform.

3. The mechanism according to claim 1, characterized in that, The damper has an internal mechanical structure connected to the shaft of the air pump clamping wheel. When the air pump clamping wheel tends to open due to changes in film tension or the need to adjust the clamping force, the shaft of the air pump clamping wheel generates a force in a first direction. The force in the first direction is along the opening direction of the air pump clamping wheel, and the mechanical structure generates a force in a second direction opposite to the first direction.

4. The mechanism according to claim 1, characterized in that, The fastening platform is connected to the bottom of the support by bolts. When the film deviates from the position of the air pump clamping wheel in the lateral or longitudinal direction during transmission, the fastening platform rotates to adjust the angle, causing the support and the fastening platform to rotate as a whole, thereby adjusting the angle of the air pump clamping wheel, so that the film returns to its normal alignment state, ensuring that the tension of the film is uniform at each position, and ensuring the smooth transmission of the film.

5. The mechanism according to claim 1, characterized in that, When installing the film, place the film roll on the film roll mounting frame, so that one end of the film passes between the first air pump clamping wheel and the second air pump clamping wheel, and use the line connecting the centers of the two air pump clamping wheels as the dividing line, so that one end of the film extends to the other side away from the film roll. Rotate the adjustment knob on the square guide rail to move the slider on the guide rail, thereby adjusting the position of the transition plate and the upper component, so that the air pump clamping wheel is aligned with the initial position of the film; By rotating the adjusting screw on the fastening platform, the angle between the fastening platform and the support is changed, thereby achieving the initial angle adjustment of the fastening platform; By adjusting the pressure regulating valve on the pneumatic pump, the air supply pressure is changed, thereby adjusting the initial clamping force of the air pump clamping wheel on the diaphragm.

6. The mechanism according to claim 1, characterized in that, The first platform includes a ratchet wrench, a cylindrical clamping device, and bolts. The cylindrical clamping device is installed on the side of the square guide rail by bolt connection and is fixedly connected to the side of the square guide rail from above by bolts. A ratchet wrench is provided on the side of the cylindrical clamping device. The shaft of the ratchet wrench meshes with the ratchet mechanism inside the cylindrical clamping device. When the ratchet wrench is rotated, it drives the ratchet mechanism to rotate. The ratchet mechanism is connected to the air pump clamping wheel or its related components, thereby causing the air pump clamping wheel or swing arm to move or rotate, thereby adjusting the film tension or position.

7. The mechanism according to claim 1, characterized in that, The mechanism also includes a detection device. The detection device detects in real time the moving speed and edge of the film extending from between the first air pump clamping wheel and the second air pump clamping wheel; Based on the moving speed and the protrusion state of the edge recognition film; Based on the extended state, the air pressure adjustment values ​​of the first air pump clamping wheel and the second air pump clamping wheel and the rotation speed of the film shaft are determined. After adjustment, the clamping force makes the film extension speed equal to the rotation speed of the film shaft. Adjust the relative angle between the first air pump clamping wheel and the second air pump clamping wheel according to the extended state.

8. A method for stretching and shearing film using a roller, characterized in that, The film-pulling and shearing roller method is applied to the mechanism as described in any one of claims 1-7, the method comprising: Install the film roll onto the film roll mounting frame and complete the initial parameter adjustment; The motor is started to drive the film roll to rotate, so that the film begins to stretch and the first air pump clamping wheel and the second air pump clamping wheel are controlled to clamp the film. During the film transmission process, the film position and tension are adjusted according to the real-time status.

9. The film stretching and shearing roller method according to claim 8, characterized in that, The adjustment process includes: Rotate the square guide rail adjustment knob to align the transition plate with the first air pump clamping wheel and the second air pump clamping wheel and the film's initial position. Rotate the fastening platform adjustment screw to adjust the initial angle and adjust the pneumatic pump pressure regulating valve to set the initial clamping force. During the process of the film starting to stretch and controlling the first air pump clamping wheel and the second air pump clamping wheel to clamp the film, the film tension is monitored in real time by a pressure sensor. The damper adjusts the opening angle of the cylindrical clamping wheel in the air pump clamping wheel according to the film tension and motion state to maintain the film tension stability. When it is necessary to adjust the position or tension of the film, turn the ratchet wrench. The ratchet mechanism and connecting rod drive the air pump clamping wheel or swing arm to move or rotate, thereby adjusting the position or tension of the film. When the film has a positional deviation or uneven tension, the sensor detects the deviation signal and controls the fastening platform to rotate and adjust the angle, so that the film returns to the normal transmission state.

10. The film stretching and shearing roller method according to claim 8, characterized in that, The step of mounting the film roll on the film roll mounting frame and completing the initial parameter adjustment includes: After the film roll is installed on the film roll mounting frame, the film on the film roll is pulled out and passed through the gap between the first air pump clamping wheel and the second air pump clamping wheel; The width of the film is detected, and the relative positions of the first air pump clamping wheel, the second air pump clamping wheel and the film are determined based on the width and the length of the first air pump clamping wheel and the second air pump clamping wheel parallel to the film boundary. The clamping force of the first and second air pump clamping wheels is determined based on the width and the length of the first and second air pump clamping wheels parallel to the film boundary, thus completing the initial parameter adjustment.

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