An automatic alignment guiding mechanism for cord fabric coating and cutting

Abstract

The utility model provides a kind of automatic alignment guiding mechanism of cord fabric rubber hanging cutting, belong to alignment guiding technical field, the automatic alignment guiding mechanism of cord fabric rubber hanging cutting is used to carry out automatic alignment and guiding to cord fabric rubber hanging, including a support base, a guide roller, a tensioning arm and an activity support shaft;The support base is used as the installation basis of whole mechanism, the support base is cuboid structure, is manufactured by aluminium alloy material, the guide roller is cylindrical structure, is manufactured by polyurethane material, the guide roller is worn in the mounting hole of the support base and is fixed by bolt connection with the support base, the guide roller is perpendicular to the running direction of cord fabric rubber hanging along its axial direction, the utility model can solve the technical problem that cord fabric rubber hanging is prone to lateral deviation in the running process before cutting in prior art, leading to inaccurate cutting position.

Description

Technical Field

[0001] This utility model belongs to the field of alignment and guidance technology, specifically, it relates to an automatic alignment and guidance mechanism for cutting fabric with adhesive coating. Background Technology

[0002] In tire manufacturing, conveyor belt manufacturing, and other fields, rubber coating on cord fabric is a crucial basic material, and its quality directly affects the performance of the final product. Before cutting or further processing large rolls of rubber coating, it is necessary to precisely guide the rubber coating along a predetermined path. However, in existing technologies, during high-speed or high-tension operation, the rubber coating often experiences lateral deviation or misalignment due to factors such as material inhomogeneity, fluctuations in winding tension, changes in ambient temperature and humidity, and minor vibrations of the cutting equipment. Existing guiding mechanisms for rubber coating mainly employ fixed guide rollers or simple manual adjustment mechanisms. Fixed guide rollers can only provide initial guidance and lack the ability to correct dynamic deviations during operation in real time, making them unsuitable for handling misalignment issues under complex working conditions. While manual adjustment mechanisms can perform corrections, they are slow to respond, labor-intensive, and their accuracy relies entirely on the operator's experience, failing to meet the demands of modern industry for high-precision, automated production. Some existing technologies employ complex sensor detection and servo motor-driven electro-hydraulic control systems to achieve automatic alignment. However, such systems are complex in structure, expensive, difficult to maintain, and require a high degree of cleanliness in the working environment, making them unsuitable for the dusty and oily environments commonly found in cord fabric coating production sites. Therefore, designing an automatic alignment and guiding mechanism for cord fabric coating that is simple in mechanical structure, low in cost, highly responsive, and has high alignment accuracy without the aid of a complex electronic control system has become a pressing technical challenge. Existing methods mainly employ feedback control systems based on sensors and servo motors, or use simple mechanical cams or inclined roller structures for limited passive guidance. Utility Model Content

[0003] In view of this, the present invention provides an automatic alignment guide mechanism for cutting the adhesive-coated fabric, which can solve the technical problem in the prior art that the adhesive-coated fabric is prone to lateral displacement during the operation before cutting, resulting in inaccurate cutting position.

[0004] This utility model is implemented as follows:

[0005] This utility model provides an automatic alignment and guiding mechanism for cutting adhesive-coated curtain fabric. It is used for automatically aligning and guiding the adhesive coating on the curtain fabric. The mechanism includes a support base, a guide roller, a tensioning arm, and a movable support shaft. The support base serves as the mounting foundation for the entire mechanism. The support base is a cuboid structure made of aluminum alloy. The guide roller is a cylindrical structure made of polyurethane. The guide roller passes through mounting holes in the support base and is bolted to the support base. The guide roller is positioned perpendicular to the running direction of the adhesive coating along its axial direction. The tensioning arm is an L-shaped structure made of carbon steel. The tensioning arm is connected to the support base via a hinge shaft, allowing the tensioning arm to rotate around the hinge shaft in a plane perpendicular to the direction of the fabric adhesive application. The movable support shaft is a cylindrical structure made of stainless steel. One end of the movable support shaft is connected to the free end of the tensioning arm via a bearing seat, while the other end is unloaded. The movable support shaft is arranged parallel to the axis of the guide roller along its axial direction. The bearing seat of the movable support shaft supports its rotational movement. The rotational movement of the tensioning arm around the hinge shaft adjusts the position of the movable support shaft, thereby achieving a lateral automatic alignment and guidance function for the fabric adhesive application during operation.

[0006] The technical advantages of the automatic alignment guide mechanism for cutting adhesive-coated curtain fabric provided by this utility model are as follows: The automatic alignment guide mechanism uses a support base as the installation foundation, ensuring the stability and positioning accuracy of the mechanism. The guide rollers provide a stable guiding surface and friction support for the operation of the adhesive-coated curtain fabric. The guide rollers are made of polyurethane material, possessing suitable hardness and elasticity, providing sufficient friction while avoiding damage to the adhesive-coated curtain fabric. The L-shaped structure of the tensioning arm, connected with a hinge shaft, allows it to rotate around the hinge shaft, thus enabling free movement in a plane perpendicular to the direction of adhesive-coated curtain fabric operation. This mobility, combined with... The movable support shaft is designed to change its lateral position as the tensioning arm rotates. When the fabric adhesive deviates laterally during operation, the movable support shaft automatically adjusts its position under the action of external force through the rotation of the tensioning arm, achieving lateral pushing and correction of the fabric adhesive, thus achieving automatic alignment and guidance. Furthermore, the movable support shaft is connected by a bearing seat, ensuring its smooth and flexible rotation, effectively reducing running resistance, and improving the response speed and accuracy of alignment and guidance. The entire mechanism consists of only four core components, with a simple and compact structure, easy to manufacture and maintain, reducing production costs and failure rate.

[0007] Based on the above technical solution, the automatic alignment guide mechanism for cutting adhesive-coated curtain fabric of this utility model can be further improved as follows:

[0008] The guide roller has a plurality of equally spaced protrusions along its circumferential surface to increase friction. The protrusions have a semi-circular cross-section and extend along the axial direction of the guide roller.

[0009] The beneficial effects of the above-mentioned improvement scheme are as follows: the multiple equally spaced protrusions arranged along the circumferential surface of the guide roller, since the protrusions have a semi-circular cross-section and extend axially, greatly increase the contact area and friction between the guide roller and the fabric adhesive. This increased friction effectively prevents the fabric adhesive from sliding or slipping relative to the guide roller during operation, ensuring stable transmission of the fabric adhesive and further improving the accuracy of guidance and alignment. Even when the surface of the fabric adhesive is wet or slippery or the tension fluctuates, the protrusions can still provide reliable gripping force to maintain the smooth operation of the fabric adhesive. At the same time, the semi-circular protrusion design, compared with the sharp edge design, can effectively avoid damage or indentation to the surface of the fabric adhesive, ensuring the quality of the fabric adhesive.

[0010] Furthermore, the width of the guide roller along its axial direction is greater than the projected width of the tensioning arm along the axial direction of the movable support shaft.

[0011] The beneficial effects of the above-mentioned improvement scheme are as follows: the width of the guide roller along its axial direction is greater than the projected width of the tensioning arm along the axial direction of the movable support shaft. This dimensional relationship ensures that the fabric adhesive always has sufficient guide roller surface to provide support and friction during operation. No matter how the fabric adhesive is laterally offset, as long as it is within the effective alignment range of the mechanism, the fabric adhesive can maintain full contact with the guide roller. At the same time, since the projected width of the tensioning arm is smaller than the width of the guide roller, the lateral adjustment space of the tensioning arm and the movable support shaft is more flexible. The range of rotation adjustment will not be affected by the width limitation of the tensioning arm, thereby ensuring the effectiveness and stability of the mechanism in lateral alignment guidance and avoiding unnecessary interference or friction between the tensioning arm and the edge of the fabric adhesive during operation.

[0012] Furthermore, the tensioning arm is provided with a mounting groove for mounting a weight counterweight near the hinge shaft. The mounting groove is a rectangular recessed structure and extends along the length of the tensioning arm.

[0013] The beneficial effects of the above-mentioned improvement scheme are as follows: The mounting groove for installing the counterweight, located on the tensioning arm near the hinge axis, provides a convenient and adjustable counterweight mounting position for the mechanism. By adding or removing the weight of the counterweight in the mounting groove, the initial tension or response speed of the tensioning arm can be precisely adjusted. When the fabric adhesive shifts laterally, the inertia of the counterweight can help the tensioning arm return to the equilibrium position more quickly and stably, improving the mechanism's response sensitivity to offset and the accuracy of alignment. The mounting groove is a rectangular recessed structure that extends along the length of the tensioning arm. This design makes the installation and removal of the counterweight more convenient. At the same time, the position of the mounting groove near the hinge axis can more effectively utilize the torque generated by the counterweight, achieving a larger tension torque adjustment with a smaller counterweight. This makes the adjustment of the mechanism more precise and controllable, adapting to fabric adhesive application of different weights and operating speeds.

[0014] Furthermore, the support base is provided with a limiting block for limiting the rotation angle of the tensioning arm. The limiting block is a cylindrical structure and is threadedly connected to the side of the support base to support the free end of the tensioning arm.

[0015] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The limiting block provided on the support base for limiting the rotation angle of the tensioning arm provides a physical safety boundary for the rotational movement of the tensioning arm. The limiting block is a cylindrical structure and is connected to the side of the support base by threads. This connection method allows the position of the limiting block to be finely adjusted, thereby accurately setting the maximum and minimum rotation angles of the tensioning arm. This effectively prevents the tensioning arm from over-rotating during the alignment process due to excessive tension or external disturbances, avoids accidental collisions between the movable support shaft and surrounding equipment or mechanisms, and protects the stability and safety of the entire alignment guide mechanism. At the same time, the setting of the limiting block also ensures that the tensioning arm can still maintain its effective function of applying glue to the curtain fabric within the maximum swing range, avoiding ineffective actions.

[0016] Furthermore, the outer circumferential surface of the movable support shaft is provided with a rubber sleeve for supporting the operation of the fabric adhesive coating. The rubber sleeve is made of nitrile rubber material and is tightly fitted onto the outer surface of the movable support shaft by an interference fit.

[0017] The beneficial effects of the above-mentioned improvement scheme are as follows: The rubber sleeve provided on the outer circumferential surface of the movable support shaft is made of nitrile rubber material and is tightly fitted with an interference fit, which greatly increases the coefficient of friction and contact flexibility between the movable support shaft and the running fabric adhesive. When the fabric adhesive comes into contact with the movable support shaft, the flexible contact provided by the rubber sleeve can effectively buffer the impact. At the same time, the nitrile rubber material has excellent wear resistance and oil resistance, ensuring the stability and service life of the rubber sleeve in long-term operation. The interference fit ensures that the rubber sleeve will not slip relative to the other side during high-speed rotation and lateral pushing, improving the efficiency of pushing and guiding. This combination of high friction and flexible contact allows the movable support shaft to provide sufficient lateral force while avoiding damage to the edge of the fabric adhesive when laterally pushing and correcting it, thereby achieving precise and gentle automatic alignment.

[0018] Furthermore, the width of the rubber sleeve along the axial direction of the movable support shaft is smaller than the width of the guide roller along the axial direction of the guide roller.

[0019] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the width of the rubber sleeve along the axial direction of the movable support shaft is smaller than the width of the guide roller along the axial direction of the guide roller. This dimensional relationship ensures that when the movable support shaft pushes the fabric to apply adhesive laterally, it will not interfere with the guide roller due to the excessive width of the rubber sleeve, thus ensuring the motion coordination between the two main working parts. At the same time, the relatively narrow width of the rubber sleeve concentrates the lateral force of the movable support shaft, improving the pushing efficiency on the edge of the fabric to apply adhesive, enabling it to act more accurately on the lateral offset part of the fabric to apply adhesive, further improving the alignment accuracy and response speed of the mechanism, avoiding unnecessary contact and friction, and extending the service life of the rubber sleeve.

[0020] Furthermore, the hinge shaft passes through the cylindrical through hole opened on the support base and the tensioning arm. The hinge shaft is made of wear-resistant steel. The hinge shaft is connected to the tensioning arm through a bearing. The bearing is a deep groove ball bearing and is installed in the cylindrical through hole of the tensioning arm.

[0021] The beneficial effects of the above-mentioned improved scheme are as follows: the hinge shaft passes through the cylindrical through hole on the support base and the tensioning arm and is connected to the tensioning arm through the bearing. This structural design, especially the use of deep groove ball bearings, greatly reduces the frictional resistance of the tensioning arm during rotation, ensuring the flexibility and sensitivity of the tensioning arm's movement. The hinge shaft is made of wear-resistant steel, ensuring the strength and durability of the connection. The low-friction bearing connection allows the tensioning arm to respond to the lateral displacement of the fabric adhesive with minimal torque and extremely fast speed, improving the response speed and accuracy of automatic alignment. The deep groove ball bearings can withstand radial loads and small axial loads, ensuring the stability of the tensioning arm during rotation.

[0022] Furthermore, the support base is an integrally cast structure, and both the upper and side surfaces of the support base are precision milled.

[0023] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The support base adopts an integral casting structure, which ensures the high strength and rigidity of the support base and effectively prevents deformation or vibration that may occur during the operation of the mechanism. It provides an extremely stable installation platform for the entire automatic alignment and guiding mechanism. Through precision milling of the upper and side surfaces, the high flatness and accuracy of the mounting surface and positioning surface are ensured, which provides a guarantee for the precise installation and positioning of the guide roller and hinge shaft. This high-precision manufactured support base is the foundation for realizing high-precision automatic alignment and guidance. It ensures the geometric relationship and positional accuracy between all moving parts, thereby improving the overall performance and service life of the mechanism.

[0024] Furthermore, the tensioning arm is provided with an elastic element for adjusting the initial tension between the tensioning arm and the support base. The elastic element is a helical torsion spring, one end of which is fixed to the tensioning arm and the other end of which is fixed to the support base. The helical torsion spring provides the tensioning arm with tension applied to the side in the direction of the fabric adhesive application.

[0025] The beneficial effects of the above-mentioned improvement scheme are as follows: The tensioning arm is provided with an elastic element for adjusting the initial tension between the tensioning arm and the support base. The elastic element is a helical torsion spring, one end of which is fixed to the tensioning arm and the other end of which is fixed to the support base. The helical torsion spring provides a constant pre-tension force applied by the tensioning arm to the side of the fabric adhesive application direction. This pre-tension setting ensures that the movable support shaft always maintains close contact with the fabric adhesive application during operation. Even in the case of fabric adhesive tension fluctuations or slight vibrations, the movable support shaft can quickly and stably perform lateral correction, preventing excessive oscillation or insensitivity of the mechanism. At the same time, by adjusting the pre-tension of the helical torsion spring, the magnitude of the initial tension force can be finely adjusted to adapt to the alignment requirements of fabric adhesive applications of different materials and thicknesses, further improving the adaptability and stability of the alignment guide.

[0026] Compared with existing technologies, the beneficial effects of the automatic alignment and guiding mechanism for cutting adhesive-coated fabric provided by this utility model are as follows: This utility model provides an automatic alignment and guiding mechanism for cutting adhesive-coated fabric. By ingeniously optimizing the structure and connection design of the four core components—support base, guide roller, tension arm, and movable support shaft—it solves the technical problem of lateral displacement of adhesive-coated fabric during operation in existing technologies. The guide roller provides stable guidance and friction support, the tension arm is connected by a hinge shaft, giving it sensitive rotational movement capability, and the movable support shaft automatically adjusts its lateral position as the tension arm rotates, achieving precise lateral displacement and correction of the adhesive-coated fabric during operation, thus achieving the purpose of automatic alignment and guidance. The protruding guide rollers, the movable support shaft with rubber sleeves, and the adjustable counterweights and limit blocks in the mechanism further improve the friction, contact flexibility, response speed, and stability of the alignment guide. The nitrile rubber material of the rubber sleeves ensures wear resistance and lifespan. The deep groove ball bearing connection of the hinge shaft greatly reduces friction and improves the sensitivity and accuracy of the mechanism. The helical torsion spring provides stable initial tension, ensuring continuous contact and rapid response. The entire mechanism has a simple structure, few parts, and is easy to manufacture, install, and maintain. It can achieve high-precision and high-efficiency automatic alignment guide for applying adhesive to the fabric without the assistance of a complex electronic control system, greatly improving cutting accuracy, reducing material waste, and enhancing product quality and production efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A front view of an automatic alignment guide mechanism for cutting fabric with adhesive coating;

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 10. Support base; 20. Guide roller; 21. Protrusion; 30. Tensioning arm; 31. Mounting groove; 40. Movable support shaft; 50. Limiting block; 60. Elastic element. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0032] like Figure 1 The image shows an embodiment of an automatic alignment and guiding mechanism for cutting adhesive-coated curtain fabric according to this utility model. In this embodiment, it is used for automatic alignment and guidance of adhesive-coated curtain fabric. It includes a support base 10, a guide roller 20, a tensioning arm 30, and a movable support shaft 40. The support base serves as the mounting foundation for the entire mechanism. The support base is a cuboid structure made of aluminum alloy. The guide roller is a cylindrical structure made of polyurethane. The guide roller passes through mounting holes in the support base and is fixed to the support base with bolts. The guide roller is positioned perpendicular to the running direction of the adhesive-coated curtain fabric along its axial direction. The tensioning arm is an L-shaped structure made of carbon steel. It is connected to the support base via a hinge shaft, allowing it to rotate around the hinge shaft in a plane perpendicular to the direction of the fabric adhesive application. The movable support shaft is a cylindrical structure made of stainless steel. One end of the movable support shaft is connected to the free end of the tensioning arm via a bearing seat, while the other end is unloaded. The movable support shaft is positioned parallel to the axis of the guide roller along its axial direction. The bearing seat of the movable support shaft supports its rotation. The rotation of the tensioning arm around the hinge shaft adjusts the position of the movable support shaft, achieving a lateral automatic alignment and guidance function for the fabric adhesive application during operation.

[0033] In the above technical solution, the guide roller is provided with a plurality of equally spaced protrusions 21 for increasing friction along its circumferential surface. The protrusions have a semi-circular cross-section and extend along the axial direction of the guide roller.

[0034] Furthermore, in the above technical solution, the width of the guide roller along its axial direction is greater than the projected width of the tensioning arm along the axial direction of the movable support shaft.

[0035] Furthermore, in the above technical solution, a mounting groove 31 for mounting a weight counterweight is provided on the tensioning arm near the hinge shaft. The mounting groove is a rectangular recessed structure and extends along the length of the tensioning arm.

[0036] Furthermore, in the above technical solution, the support base is provided with a limiting block 50 for limiting the rotation angle of the tensioning arm. The limiting block has a cylindrical structure and is connected to the side of the support base by a thread to support the free end of the tensioning arm.

[0037] Furthermore, in the above technical solution, the outer circumferential surface of the movable support shaft is provided with a rubber sleeve for supporting the operation of the fabric adhesive. The rubber sleeve is made of nitrile rubber material and is tightly fitted onto the outer surface of the movable support shaft by interference fit.

[0038] Furthermore, in the above technical solution, the width of the rubber sleeve along the axial direction of the movable support shaft is smaller than the width of the guide roller along the axial direction of the guide roller.

[0039] Furthermore, in the above technical solution, the hinge shaft passes through the cylindrical through hole opened on the support base and the tensioning arm. The hinge shaft is made of wear-resistant steel. The hinge shaft is connected to the tensioning arm through a bearing. The bearing is a deep groove ball bearing, and the bearing is installed in the cylindrical through hole of the tensioning arm.

[0040] Furthermore, in the above technical solution, the support base is an integrally cast structure, and the upper and side surfaces of the support base are precision milled.

[0041] Furthermore, in the above technical solution, the tensioning arm is provided with an elastic element 60 for adjusting the initial tension between the tensioning arm and the support base. The elastic element is a helical torsion spring. One end of the helical torsion spring is fixed on the tensioning arm, and the other end is fixed on the support base. The helical torsion spring provides tension to the side of the tensioning arm in the direction of the fabric adhesive application.

[0042] This utility model discloses an automatic alignment guide mechanism for cutting fabric with adhesive coating, comprising four core components: a support base, a guide roller, a tensioning arm, and a movable support shaft. The support base is a single-piece cast rectangular structure made of high-strength aluminum alloy. Its upper and side surfaces are precision milled to ensure flatness during installation. The support base has mounting holes for the guide roller and cylindrical through holes for the hinge shaft, and mounting holes for threaded connection limit blocks are provided on the side. The guide roller is a cylindrical structure, preferably made of polyurethane material with a Shore A hardness of 85-95. The outer circumference of the guide roller has multiple equally spaced semi-circular protrusions extending axially. The guide roller passes through the mounting holes in the support base and is fixed by M10 high-strength bolts. The axis of the guide roller is perpendicular to the running direction of the fabric adhesive coating. The tensioning arm is an L-shaped structure made of Q345B carbon steel, and has a rectangular recessed mounting groove near the hinge shaft for mounting a counterweight. The tensioning arm and the support base are connected by a hinge shaft made of wear-resistant steel. The hinge shaft has through holes in both the support base and the tensioning arm, and a deep groove ball bearing (model 6205) is installed on the hinge shaft. This bearing is installed within the through hole of the tensioning arm to support its flexible rotation around the hinge shaft. The movable support shaft is a cylindrical structure made of 304 stainless steel with an outer diameter of 50mm. It is connected to the free end of the tensioning arm via a bearing housing containing a ball bearing to support its rotation. A nitrile rubber sleeve is tightly fitted onto the outer circumference of the movable support shaft. This sleeve has an interference fit of 0.05–0.1mm, and its width along the axial direction of the movable support shaft is 100mm, less than the axial width of the guide roller (200mm). An M12 cylindrical stop block is threaded onto the side of the support base to limit the rotation angle of the tensioning arm. The extension length of the stop block is adjustable. A helical torsion spring connects the tensioning arm and the support base. One end of the spring is fixed to the tensioning arm, and the other end is fixed to the support base. This spring provides the initial tension force applied by the tensioning arm to the side of the fabric in the direction of adhesive application. The initial tension force is preferably 5–10 N.

[0043] The specific operation or use method of this utility model is as follows: First, the automatic alignment guide mechanism of this utility model needs to be securely fixed to the frame of the fabric adhesive cutting machine using anchor bolts. Ensure that the installation position of the support base is such that both the guide roller and the movable support shaft are located below or to the side of the running fabric adhesive, with the axis of the guide roller perpendicular to the running direction of the fabric adhesive, and the axis of the movable support shaft parallel to the axis of the guide roller. Next, adjust the position and height of the guide roller so that it can fully contact the lower surface of the running fabric adhesive, providing stable support and friction for the fabric adhesive. Then, by adjusting the extension length of the limit block fixed on the support base, precisely set the maximum and minimum rotation angles of the tensioning arm, ensuring that the lateral adjustment range of the movable support shaft can cover the maximum expected offset of the fabric adhesive and prevent excessive swaying. Subsequently, based on the material, thickness, and operating speed of the fabric adhesive, the initial tension of the tensioning arm is precisely set by adding or removing counterweights or adjusting their positions within the mounting groove on the tensioning arm, as well as adjusting the preload of the helical torsion spring. This initial tension ensures that the rubber sleeve of the movable support shaft maintains a tight yet gentle contact with the side edge of the fabric adhesive during operation, without causing damage or noticeable indentations to the edge of the fabric adhesive. After the fabric adhesive begins operation, if it shifts laterally to the left or right for various reasons, the edge of the fabric adhesive will push the movable support shaft and the tensioning arm. For example, when the fabric adhesive shifts to the right, the edge of the fabric adhesive contacts and pushes the movable support shaft, generating a torque that drives the tensioning arm to rotate counterclockwise around the hinge axis, causing the movable support shaft to move to the left. The friction between the rubber sleeve on the outside of the movable support shaft and the edge of the fabric adhesive pushes the fabric adhesive to the left, thereby correcting the shift and guiding the fabric adhesive back to the center position. Once the fabric adhesive returns to its centered position, the lateral thrust on the movable support shaft disappears, and the tensioning arm automatically resets to its equilibrium position under the combined action of the initial tension and the counterweight. The entire automatic alignment and guiding process is continuous and dynamic. The mechanism responds and corrects for lateral offset of the fabric adhesive in real time through its mechanical structure, ensuring that the fabric adhesive always runs precisely along the predetermined path to the cutting station, thereby guaranteeing cutting accuracy and quality. Operators need to regularly check the protrusions of the guide rollers, the wear of the rubber sleeves on the movable support shaft, and the lubrication condition of the hinge shaft bearings to ensure the long-term stable operation of the mechanism.

[0044] The following is a specific embodiment 1 of this utility model: In this embodiment, the support base adopts an integrally cast aluminum alloy structure with dimensions of 400mm x 250mm x 150mm. The upper surface and sides are milled, and the flatness is controlled within 0.05mm. The guide roller is made of polyurethane material with a diameter of 100mm and an axial width of 200mm. The surface is provided with semi-circular protrusions spaced 10mm apart and with a height of 2mm. The guide roller is fixed to the support base with M10 bolts, and its axis is perpendicular to the running direction of the fabric adhesive. The tensioning arm is made of Q345B carbon steel, with an L-shaped structure and a length of approximately 250mm. It has a rectangular mounting groove for placing a 2kg counterweight. The tensioning arm is connected to the support base through a wear-resistant steel hinge shaft with a diameter of 20mm. A 6205 deep groove ball bearing is installed on the tensioning arm. The movable support shaft is made of 304 stainless steel, with a diameter of 50mm and an axial length of 150mm. It is connected to the bearing seat at the free end of the tensioning arm via a 6006 ball bearing. The outer surface of the movable support shaft is fitted with a 100mm wide and 5mm thick nitrile rubber sleeve. The limiting block on the side of the support base is connected by an M12 thread, with an extension length adjustable to 10mm, used to limit the maximum rotation angle of the tensioning arm. A helical torsion spring connects the tensioning arm and the support base, providing an initial tension force of 5N. In this embodiment, the mechanism can automatically align and guide the fabric adhesive at a running speed of 10m / min with a width fluctuation range within ±15mm. When the fabric adhesive deviates laterally, the contact force between the movable support shaft and the edge of the fabric adhesive drives the tensioning arm to complete the correction action within 0.5s, guiding the fabric adhesive back to the center position, ensuring the accuracy of the cut. The mechanism has a simple structure, is easy to install, and has low maintenance costs. It effectively solves the problem of fabric deviation in existing technologies, ensures cutting quality, and achieves stable and efficient production.

[0045] The following is another specific embodiment 2 of this utility model: This embodiment 2 is based on embodiment 1, and the L-shaped structure of the tensioning arm is optimized into a structure with an adjustable length. By setting an internal threaded hole and an external threaded rod on the long side of the L-shape of the tensioning arm, and using M16 fine thread connection, the lever arm length from the movable support shaft to the hinge shaft can be precisely adjusted by rotating the threaded rod. This improvement allows for more precise adjustment of the sensitivity and response speed of the mechanism. When the lever arm is shortened, the response speed of the mechanism increases but the lateral thrust decreases. When the lever arm is extended, the lateral thrust increases but the response speed decreases slightly, in order to adapt to the fabric coating of different weights and operating speeds, further enhancing the adaptability and adjustment accuracy of this utility model to different working conditions.

[0046] The following is another specific embodiment 3 of this utility model: This embodiment 3 is based on embodiment 1. The guide roller adopts a design with a slight axial taper, with a taper ratio of 1:500, that is, the diameter at the center of the guide roller is slightly smaller than the diameter at both ends. The guide roller adopts a segmented structure, divided into three sections: left, middle, and right. The middle section is connected to the two side sections by an elastic coupling. This improvement allows the guide roller to provide support while further generating a cohesive force towards the center through the taper on the fabric adhesive, assisting the lateral pushing and correction function of the automatic alignment guide mechanism. The segmented elastic coupling design can absorb the local tension unevenness during the fabric adhesive application process, reduce the impact on alignment accuracy, and improve the stability and smoothness of the guide.

[0047] The following is another specific application scenario of this utility model, Embodiment 4. This embodiment is applied to a continuous vulcanization production line for rubber conveyor belts, including a support base, guide rollers, a tensioning arm, and a movable support shaft, described in detail below: In this application scenario, the mechanism needs to guide an unvulcanized rubber conveyor belt with a width of 1200mm and a running speed of 5m / min. The support base has dimensions of 800mm x 300mm x 200mm and is made of cast iron to enhance its rigidity and vibration resistance. The guide roller has a diameter of 150mm and an axial width of 300mm, with a smooth polyurethane surface and no protrusions to avoid damaging the surface of the unvulcanized rubber. The structure of the tensioning arm and the movable support shaft is consistent with Embodiment 1, but the rubber sleeve material of the movable support shaft is replaced with high-temperature resistant butyl rubber to adapt to the high ambient temperature of 40-60℃ in the vulcanization production line. The limit block is adjusted to ensure that the movable support shaft has a lateral adjustment range of ±25mm. The initial tension force provided by the helical torsion spring is adjusted to 15N to meet the guiding requirements of heavier conveyor belts. Before the conveyor belt enters the vulcanizing machine, the automatic alignment and guiding mechanism monitors and corrects the lateral deviation of the conveyor belt in real time, ensuring that the conveyor belt can be accurately aligned and enter the vulcanizing machine. This avoids edge defects or scrap caused by deviation during the vulcanization process, significantly improving the pass rate and production efficiency of the conveyor belt. The entire mechanism can maintain stable automatic alignment and guiding function even in high-temperature environments, without the need for manual intervention.

[0048] Specifically, the principle of this invention is as follows: The automatic alignment guide mechanism utilizes the force balance and geometric self-adjustment principles of mechanical structures to achieve automatic alignment of the fabric adhesive. The core principle lies in applying a continuous, variable lateral correction force to the edge of the fabric adhesive through a freely rotating tension arm and its connected movable support shaft. The guide roller provides a stable operating reference and driving friction. When the fabric adhesive shifts laterally to one side during operation for some reason, the edge of the fabric adhesive contacts and pushes the movable support shaft. Since the movable support shaft is hinged to the support base via the tension arm, this pushing torque drives the tension arm to rotate around the hinge axis, thereby changing the lateral position of the movable support shaft. The rotation of the tension arm causes the movable support shaft to move in the opposite direction of the axial shift, applying a reverse lateral pushing force to the edge of the fabric adhesive. This lateral pushing force is opposite to the torque that caused the fabric adhesive to shift, pushing the fabric adhesive back to the predetermined operating center position. When the rubber coating on the fabric returns to the center position, the pushing torque on the movable support shaft disappears, and the tensioning arm, under the action of its own counterweight and the initial tension force provided by the helical torsion spring, returns to the equilibrium position. The entire process is an automatic feedback and adjustment process based on the lever principle and mechanical torque balance, achieving continuous, sensitive, and precise automatic alignment and guidance without any complex electronic control or data processing. The protrusions on the guide roller increase friction, ensuring stable transmission of the rubber coating on the fabric; the rubber sleeve increases contact flexibility and improves pushing friction; and the deep groove ball bearing reduces motion resistance, ensuring the sensitivity of the tensioning arm's rotation, allowing the mechanism to react quickly to even slight deviations in the rubber coating on the fabric.

[0049] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An automatic alignment and guiding mechanism for cutting adhesive-coated curtain fabric, used for automatically aligning and guiding the adhesive coating on the curtain fabric, characterized in that, The device includes a support base, a guide roller, a tensioning arm, and a movable support shaft. The support base serves as the mounting foundation for the entire mechanism. It is a rectangular structure made of aluminum alloy. The guide roller is a cylindrical structure made of polyurethane. The guide roller passes through mounting holes in the support base and is bolted to it. The guide roller is positioned perpendicular to the direction of the fabric adhesive application along its axial direction. The tensioning arm is an L-shaped structure made of carbon steel and is connected to the support base via a hinge shaft, allowing the tensioning arm to... The arm can rotate around the hinge axis in a plane perpendicular to the direction of the fabric adhesive application. The movable support shaft is a cylindrical structure made of stainless steel. One end of the movable support shaft is connected to the free end of the tensioning arm through a bearing seat, while the other end is unloaded. The movable support shaft is arranged parallel to the axis of the guide roller along its axial direction. The bearing seat of the movable support shaft is used to support the rotation of the movable support shaft. The rotation of the tensioning arm around the hinge axis is used to adjust the position of the movable support shaft, thereby realizing the lateral automatic alignment and guidance function for the fabric adhesive application during operation.

2. The automatic alignment and guiding mechanism for cutting adhesive-coated curtain fabric according to claim 1, characterized in that, The guide roller has a plurality of equally spaced protrusions along its circumferential surface to increase friction. The protrusions have a semi-circular cross-section and extend along the axial direction of the guide roller.

3. The automatic alignment and guiding mechanism for cutting adhesive-coated curtain fabric according to claim 2, characterized in that, The width of the guide roller along its axial direction is greater than the projected width of the tensioning arm along the axial direction of the movable support shaft.

4. The automatic alignment guide mechanism for adhesive-coated fabric cutting according to claim 3, characterized in that, The tensioning arm is provided with a mounting groove for mounting a weight counterweight near the hinge axis. The mounting groove is a rectangular recessed structure and extends along the length of the tensioning arm.

5. The automatic alignment guide mechanism for adhesive-coated fabric cutting according to claim 4, characterized in that, The support base is provided with a limiting block for limiting the rotation angle of the tensioning arm. The limiting block is a cylindrical structure and is threadedly connected to the side of the support base to support the free end of the tensioning arm.

6. The automatic alignment and guiding mechanism for adhesive-coated fabric cutting according to claim 5, characterized in that, The outer circumferential surface of the movable support shaft is provided with a rubber sleeve for supporting the operation of the fabric adhesive coating. The rubber sleeve is made of nitrile rubber material and is tightly fitted onto the outer surface of the movable support shaft by interference fit.

7. The automatic alignment and guiding mechanism for cutting adhesive-coated curtain fabric according to claim 6, characterized in that, The width of the rubber sleeve along the axial direction of the movable support shaft is smaller than the width of the guide roller along the axial direction of the guide roller.

8. The automatic alignment guide mechanism for cutting adhesive-coated curtain fabric according to claim 7, characterized in that, The hinge shaft passes through the cylindrical through hole opened on the support base and the tensioning arm. The hinge shaft is made of wear-resistant steel. The hinge shaft is connected to the tensioning arm through a bearing. The bearing is a deep groove ball bearing and is installed in the cylindrical through hole of the tensioning arm.

9. The automatic alignment guide mechanism for adhesive-coated fabric cutting according to claim 8, characterized in that, The support base is an integrally cast structure, and the upper and side surfaces of the support base are precision milled.

10. The automatic alignment and guiding mechanism for cutting adhesive-coated curtain fabric according to claim 9, characterized in that, The tensioning arm is provided with an elastic element for adjusting the initial tension between the tensioning arm and the support base. The elastic element is a helical torsion spring. One end of the helical torsion spring is fixed to the tensioning arm, and the other end is fixed to the support base. The helical torsion spring provides the tensioning arm with tension in the direction of the fabric adhesive application.

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