A winding device for a membrane material wire mesh

Abstract

The present invention relates to the technical field of winding equipment, and specifically discloses a winding device for film screen meshes, which includes a frame and two winding rollers. It further includes: a displacement device for driving the two winding rollers to rotate synchronously along a circular track for position exchange; a rotating rod rotatably installed on the frame, a rotating shaft is installed on the rotating rod, and two ropes are wound around the rotating shaft; a tensioning roller, and docking blocks capable of docking with the bottom end of the rotating rod are rotatably installed at both ends of the tensioning roller, and the two docking blocks are respectively connected to the two ropes. The tensioning roller and the winding roller have magnetism and there is an attractive force between them. The fixation and winding of the film material are realized by using the magnetic attractive force between the tensioning roller and the winding roller. The position and movement of the tensioning roller are controlled by a docking mechanism and ropes, which has the advantages of being able to realize automatic roll change, avoiding damage to the film material, ensuring the continuity of the winding process and the tightness of the material roll.

Description

Technical Field

[0001] The present invention relates to the technical field of winding equipment, and particularly relates to a winding device for film wire meshes. Background Art

[0002] Film wire meshes include various types such as polymer films, metal wire meshes, composite material meshes, etc., and they are applied in multiple fields such as printing, electronics, textiles, construction, and environmental protection. During the production process of these materials, the winding device plays a crucial role. It is responsible for winding and storing the continuously formed film wire meshes. The quality of winding is not only directly related to the performance of the subsequent processing of the materials, but also has a decisive impact on the yield rate of the end products. Therefore, ensuring the stability and precision control of the winding device is a key link in the entire production process, and is of great significance for improving production efficiency and product quality.

[0003] The Chinese patent document with the authorization announcement number CN105668280B discloses a strip winding device. The locking member is composed of locking posts provided on the groove wall of the card slot. One end of the locking post is arranged in the fixing hole opened on the groove wall of the card slot. A compression spring is arranged in the fixing hole. A lock hole for inserting the locking post is arranged at the position corresponding to the locking post on the insertion plate. The locking posts are arranged at intervals along the roll length direction of the material roll on the groove wall of the card slot. The end of the locking post protruding from the groove wall of the card slot is arranged in a spiky shape. In the winding device in this patent document, after the winding of the previous material roll is completed, the support plate can be rotated to place another new material roll at the winding position. Since the strip is laid on the surface of the new material roll, when the insertion plate is inserted into the card slot of the new material roll, the insertion plate will press the strip into it together, realizing the fixation of the strip on the new material roll. Then, the strip between the two material rolls is cut off, and the driving mechanism drives the new material roll to rotate for winding, and the fully wound roll tape is unloaded.

[0004] When the existing winding equipment is in use, after changing the roll, the film material needs to be fixed on the reel, either by pasting and fixing, or by using fixing members (such as pressing rods, pressing plates or pressing blocks) in the above-mentioned patent document to clamp the film material on the reel, and then the film material is wound around the reel as the reel rotates. However, after the film material is wound around the reel for multiple turns, if the fixing member is not taken out, it will cause an increase in cost. Therefore, in most cases, the fixing member must be separated from between the film materials. During the process of pulling out the fixing member, due to the relative sliding friction between the fixing member and the film material, this may cause scratches on the surface of the film material. In addition, once the fixing member is pulled out, gaps will be left between the film materials, which may cause the materials inside the material roll to become loose, thereby affecting the overall structure and stability of the materials. Summary of the Invention

[0005] The present invention provides a winding device for film wire meshes, aiming to solve the problem in the related art that it is inconvenient to fix the end of the film material on the reel.

[0006] A winding device for a membrane material wire mesh, comprising a frame and two winding rollers. It is characterized by further comprising: a displacement device for driving the two winding rollers to rotate synchronously along a circular track for position exchange, a rotating rod rotatably mounted on the frame, a tensioning roller and a docking mechanism. A rotating shaft is mounted on the rotating rod, and two ropes are wound around the rotating shaft. Docking blocks capable of docking with the bottom end of the rotating rod are rotatably mounted at both ends of the tensioning roller, and the two docking blocks are respectively connected to the two ropes. The tensioning roller and the winding roller have magnetism and there is an attractive force between them. The docking mechanism includes a torque bearing mounted at the end of the winding roller, and a hook portion capable of cooperating with the docking block is provided on the outer ring of the torque bearing. When the rear winding roller is winding, the docking block abuts against the rotating rod, and the tensioning roller presses the membrane material between the two winding rollers. After the membrane material between the rear winding roller and the tensioning roller is cut off, the tensioning roller drives the end of the membrane material to rotate downward, so that the membrane material is clamped between the front winding roller and the tensioning roller. The docking block is hooked with the hook portion, the rope is released, and the tensioning roller rotates around the axis of the front winding roller until it reaches the upper front of the front winding roller. As the membrane material on the front winding roller thickens, the docking block is disengaged from the hook portion, the rope is retracted to drive the tensioning roller to reset, and the two winding rollers are exchanged front and rear positions.

[0007] The effect is as follows: During the winding process, when the rear winding roller is winding, the docking block of the tensioning roller abuts against the bottom end of the rotating rod, connecting the tensioning roller and the rotating rod together. The tensioning roller presses the membrane material between the two winding rollers by gravity, making the membrane material taut. After the rear winding roller finishes winding, the cutting device cuts off the membrane material between the rear winding roller and the tensioning roller. At this time, under the action of gravity, the tensioning roller drives the membrane material to rotate downward until it is blocked by the front winding roller, and there is a magnetic attraction force between them. The winding roller and the tensioning roller clamp the membrane material, and the membrane material is firmly fixed. At the same time, the docking block on the tensioning roller is hooked with the hook portion at the end of the winding roller, so that the winding roller drives the tensioning roller to rotate. At the same time, the rope is released until it reaches the upper front of the winding roller, and the rope is released to the maximum length. As the membrane material is wound on the winding roller, the tensioning roller and the winding roller gradually move away. Finally, the docking block is disengaged from the hook portion, and the rope is retracted to make the tensioning roller dock with the rotating rod again. At the same time, the displacement device exchanges the positions of the two winding rollers.

[0008] Preferably, the displacement device includes a rotating plate rotatably mounted in the middle of the frame. The two winding rollers are respectively rotatably mounted at both ends of the rotating plate. A driving device for driving the two winding rollers to rotate is mounted on the rotating plate. The rotation of the rotating plate drives the exchange of the front and rear positions of the two winding rollers. During this process, the driving device continuously drives the winding rollers to rotate and always winds, avoiding affecting the efficiency due to stopping for roll change.

[0009] Preferably, the driving device includes a motor fixedly installed on the rotating plate. The output end of the motor is coaxially connected to one of the winding rollers. A synchronizing mechanism is installed between the two winding rollers to synchronously rotate the two rollers. The motor drives one winding roller to rotate, and the synchronizing mechanism makes the other winding roller wind synchronously.

[0010] Preferably, a docking groove is formed at the bottom end of the rotating rod. A convex block adapted to the docking groove is provided on the docking block. The rope passes through the docking groove and is connected to the convex block. The stability of the connection between the rotating rod and the tensioning roller is ensured by the convex block and the docking groove.

[0011] Preferably, the winding roller is composed of a main shaft and a plurality of arc-shaped strips arranged in a circumferential array around the main shaft. A driving member for controlling the arc-shaped strips to synchronously move away from or close to the main shaft is installed on the main shaft. When removing or sleeving a reel on the winding roller, the driving member makes the arc-shaped strips close to the main shaft, and the winding roller becomes thinner. By changing the diameter of the winding roller, it is convenient to fix and loosen the reel, thus facilitating the reel changing operation.

[0012] Preferably, in the front view projection plane, the rope is located between two vertical lines respectively passing through the two ends of the arc-shaped strip, avoiding interference between the rope and the synchronizing mechanism and the docking mechanism at both ends of the winding roller.

[0013] Preferably, the arc-shaped strip is made of a magnetic material, and a magnetic layer is provided on the outer surface of the tensioning roller. The tensioning roller and the winding roller generate an attractive force to approach each other through the characteristic of mutual attraction between the magnetic layer and the magnetic material.

[0014] Preferably, a volute spring is installed between the rotating shaft and the rotating rod. The volute spring is used to apply a torsional force to the rotating shaft, so that the convex block enters the docking groove. When the winding roller makes the tensioning roller revolve, the rope is automatically pulled out. When the winding roller disengages from the tensioning roller, the volute spring releases elastic potential energy to automatically reset the rope and the winding roller, achieving stable docking and automatic reset.

[0015] Preferably, the docking mechanism further includes a ratchet ring. A hooking portion is formed between the ratchets of the ratchet ring. The ratchet ring is coaxially and fixedly connected to the outer ring of the torque bearing. A hook capable of entering the hooking portion is provided on the docking block. A plurality of hooking portions are formed between the ratchets of the ratchet ring, providing multiple connection points for the hook. Therefore, when the hook is docked with the ratchet ring, the winding roller can complete docking by rotating a very small angle, ensuring the timeliness of docking, increasing the flexibility of connection, and realizing the reliable connection between the tensioning roller and the winding roller. As the thickness of the film material on the winding roller increases, the hook will automatically disengage from the hooking portion without manual intervention.

[0016] Preferably, a limiting ring is fixedly arranged on one side of the ratchet ring away from the middle of the winding roller. The radius of the limiting ring is greater than the outer circle radius of the ratchet ring. The existence of the limiting ring can prevent the docking block from disengaging from the side of the ratchet during the revolution of the tensioning roller. When the tensioning roller rotates around the axis of the winding roller, the rope and the ratchet ring limit the winding roller. Therefore, the docking block may tend to move laterally. However, the limiting ring forms a physical barrier to prevent the lateral movement of the docking block, thus ensuring the stability of the hook connection.

[0017] With the above technical solutions, the beneficial effects of the present invention are as follows:

[0018] 1. The two winding rollers are driven to rotate synchronously along a circular track by the displacement device for position switching, so as to switch between roll changing and winding operations. At the same time, the gravity of the tensioning roller is used to apply a tensioning force to the film material to avoid wrinkles in the film material. When fixing the end of the film material, the magnetic attraction between the tensioning roller and the winding roller realizes the fixation of the end of the film material, and the docking mechanism and the rope are used to control the movement of the tensioning roller to the position above the front of the winding roller. Moreover, due to the magnetic attraction between the tensioning roller and the winding roller, the tensioning roller and the winding roller rotate relatively to convey the film material, so that the film material is wound and fixed on the reel. When the winding reaches a certain thickness, the docking mechanism separates to reset the tensioning roller and the rope, and then the displacement device switches the winding roller being wound to the rear. Therefore, the present invention has the advantages of being able to realize automatic roll change, avoiding damage to the film material, ensuring the continuity of the winding process and the tightness of the coil.

[0019] 2. The original design intention of the volute spring is to apply necessary torque to the rotating shaft to ensure the normal operation of the mechanical device. Through its unique convex block design, the convex block can smoothly enter the docking groove through the action of the spring, thus realizing the stable docking between mechanical components. When the winding roller starts to work and the tensioning roller makes a revolution, the rope will be pulled out accordingly. This process effectively utilizes the energy storage characteristic of the volute spring. Subsequently, when the winding roller disengages from the tensioning roller, the volute spring releases the elastic potential energy stored before, prompting the rope and the winding roller to quickly and automatically reset. This mechanism not only ensures the stable docking between mechanical components but also realizes the automatic reset function of the whole system, greatly improving the efficiency and reliability of mechanical operation.

[0020] 3. During the docking process between the hook and the ratchet ring, the winding roller only needs to rotate a very small angle to quickly complete the docking action. This design significantly improves the timeliness of docking and greatly enhances the flexibility of the connection. In this way, a stable and reliable connection between the tensioning roller and the winding roller is achieved. As the thickness of the film material on the winding roller gradually increases, the hook will automatically disengage from the hooking part. The entire process does not require any manual intervention. When the tensioning roller rotates around the axis of the winding roller, the rope and the ratchet ring work together to effectively limit the winding roller. Despite this, there may be a tendency to move sideways during the movement of the docking block. However, the presence of the limit ring limits the movement range of the docking block, effectively blocking the lateral movement of the docking block, thereby ensuring the stability of the entire hooking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure during step two and step ten.

[0022] Figure 2 This is the left view after hiding the frame and limit ring in steps 2 and 10.

[0023] Figure 3 This is the top view after hiding the rack in steps 2 and 10.

[0024] Figure 4 This is a schematic diagram of the overall structure during step four.

[0025] Figure 5 This is the left view after hiding the frame and limit ring in step 4.

[0026] Figure 6 This is the left view after hiding the frame and limit ring in step seven.

[0027] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at point A in the middle.

[0028] Reference numerals:

[0029] 1. Frame; 11. Limit rod; 2. Winding roller; 3. Cutting device; 4. Positioning device; 41. Rotating plate; 42. Driving device; 5. Rotating rod; 51. Rotating shaft; 52. Rope; 53. Volute spring; 6. Tensioning roller; 61. Docking block; 611. Bump; 612. Hook; 7. Docking mechanism; 71. Torque bearing; 72. Ratchet ring; 73. Limit ring. DETAILED DESCRIPTION

[0030] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation of the present invention.

[0031] As Figures 1-7 shown, a winding device for a membrane material wire mesh includes: a frame 1, two winding rollers 2, a cutting device 3, a displacement device 4, a rotating rod 5, a tensioning roller 6, and a docking mechanism 7. The two winding rollers 2 are respectively installed on two moving ends of the displacement device 4, and the positions of the two winding rollers 2 are swapped through the displacement device 4. The cutting device 3 is installed on the frame 1, obliquely above the front side of the rear tensioning roller 6. The rotating rod 5 is rotatably installed on the frame 1, and the tensioning roller 6 is detachably arranged at the bottom end of the rotating rod 5. The docking mechanism 7 is installed at the end of the winding roller 2. When the rear winding roller 2 winds the membrane material, the tensioning roller 6 presses the membrane material located between the two winding rollers 2, so that the gravity of the tensioning roller 6 is used to apply a tensioning force to the membrane material, thereby keeping the membrane material flat. When the membrane material on the rear winding roller 2 is completely wound, the cutting device 3 cuts the membrane material, and the rotating rod 5 drives the winding roller 2 to rotate downward, thereby driving the membrane material to move downward and stick to the winding roller 2. Then, the tensioning roller 6 and the winding roller 2 clamp the end of the membrane material, and the tensioning roller 6 and the winding roller 2 are connected together through the docking mechanism 7. The tensioning roller 6 is separated from the bottom of the rotating rod 5, so that the tensioning roller 6 rotates nearly 250°, rotates to the front upper side of the winding roller 2, and then the tensioning roller 6 stops revolving, so as to send the end of the membrane material between the wound membrane material and the reel, wind it several times, and after the end is fixed, the tensioning roller 6 resets, and the displacement mechanism swaps the positions of the two winding rollers 2 to complete a complete winding process.

[0032] The winding roller 2 is composed of a main shaft, a driving member, and a plurality of arc-shaped strips. The material of the arc-shaped strips is a magnetically conductive material. The plurality of arc-shaped strips are arranged in a circumferential array around the main shaft. The driving member is installed between the main shaft and the arc-shaped strips and is used to control the arc-shaped strips to move synchronously away from or close to the main shaft. When removing or sleeving a reel from the winding roller 2, the driving member makes the arc-shaped strips close to the main shaft, and the winding roller 2 becomes thinner, so as to facilitate the removal or sleeving of the reel.

[0033] The driving member can be realized in various ways. For example, the arc-shaped strips are connected to the main shaft through hinges. The driving member can be a hydraulic cylinder or an electric push rod, which is used to push or pull the arc-shaped strips, and the position of the arc-shaped strips is controlled by adjusting the pressure. These control methods can realize the synchronous movement of the arc-shaped strips and ensure that the winding roller 2 maintains a cylindrical shape.

[0034] By making the winding roller 2 thinner, it is easier to remove the completed reel from the winding roller 2 or sleeve a new reel onto the winding roller 2, improving the convenience and efficiency of the reel-changing operation. In addition, the variable-diameter design can also adapt to different specifications of reels. This flexibility enables the winding device to adapt to more application scenarios and material types.

[0035] The position-changing device 4 includes a rotating plate 41 and a driving device 42. The middle part of the rotating plate 41 is rotatably installed on the frame 1, and a servo motor for driving the rotation of the rotating plate 41 is installed on the frame 1. The two main shafts are respectively rotatably installed at both ends of the rotating plate 41. The two main shafts can be installed at both ends of the rotating plate 41 through bearings or other rotating connectors to maintain the stability during rotation. The driving device 42 is installed on the rotating plate 41 to drive the two winding rollers 2 to rotate self-rotatingly;

[0036] The rotating plate 41 can be made of various materials, such as metal materials or high-strength engineering plastics. The shape of the rotating plate 41 can be designed according to actual needs. For example, it can be circular, elliptical or polygonal. The middle part of the rotating plate 41 can be connected to the frame 1 through a bearing or other rotating connectors to achieve smooth rotational movement.

[0037] Furthermore, the position-changing device 4 further includes a control system. This control system is used to precisely control the rotation action of the rotating plate 41 and the rotation of the winding rollers 2. Through this control system, according to the specific requirements during the winding process, the rotation speed and rotation angle of the rotating plate 41 can be flexibly adjusted. At the same time, the rotation speed of the winding rollers 2 can also be adjusted accordingly to ensure the smoothness and high efficiency of the entire winding process.

[0038] The driving device 42 includes a motor and a synchronization mechanism. The synchronization mechanism is installed between the two winding rollers 2 (for example, precise synchronization control is achieved through a sprocket chain mechanism). The motor is installed on the rotating plate 41, and the output shaft of the motor is coaxially and fixedly connected to one of the winding rollers 2, so as to start the motor to make the two winding rollers 2 rotate synchronously;

[0039] This structural design can realize the synchronous rotation and front-back position change of the two winding rollers 2. The rotating plate 41, as a support structure, fixes the two winding rollers 2 at both ends, ensuring the relative position between the winding rollers 2 is fixed. The middle part of the rotating plate 41 is rotatably installed on the frame 1, so that the entire rotating plate 41 can rotate around the center point, thereby driving the two winding rollers 2 to move along a circular track to achieve front-back position change. The driving device 42 is installed on the rotating plate 41 and can directly drive the winding rollers 2 to rotate, ensuring the continuity of the winding process.

[0040] The advantages of this design are simple structure and reliable movement. Through a rotating plate 41, the synchronous movement and position exchange of the two winding rollers 2 are realized without a complex transmission mechanism. The driving device 42 is directly installed on the rotating plate 41 and moves together with the rotating plate 41, avoiding the errors that may be brought by long-distance transmission. The entire position-changing process can be carried out continuously.

[0041] During winding, first, the winding roller 2 at the rear is unloaded and the roll is changed. Then, one end of the film material is fixed to the winding roller 2 at the front. Next, the winding roller 2 starts to rotate, and the film material is wound around the winding roller 2. When the film material on the winding roller 2 reaches the preset thickness or length, the control system sends a signal to make the rotating plate 41 start to rotate.

[0042] The rotation of the rotating plate 41 drives the two winding rollers 2 to move along a circular track, realizing the exchange of the front and rear positions. During this process, the driving device 42 continuously drives the winding roller 2 to rotate to ensure the continuity of the winding process. When the rotating plate 41 rotates 180 degrees, the two winding rollers 2 complete the exchange of the front and rear positions. At this time, the winding roller 2 that was originally in the front has moved to the rear for winding, and the winding roller 2 that was originally in the rear has moved to the front. This design realizes the continuity of the winding process and improves the efficiency.

[0043] The number of the rotating rods 5 is two. One ends of the two rotating rods 5 are rotatably installed on the frame 1 through a rotating shaft. A limiting rod 11 for limiting the maximum downward rotation angle of the rotating rod 5 is fixedly installed on the frame 1. When the limiting rod 11 abuts against the rotating rod 5, the tensioning roller 6 at the bottom of the rotating rod 5 clamps the film material with the winding roller 2. A rotating shaft 51 is rotatably installed between the two rotating rods 5. The interiors of the two rotating rods 5 are hollow, and the bottom ends are open to form a docking groove. Both ends of the rotating shaft 51 enter the interiors of the two rotating rods 5 and are wound with ropes 52. A scroll spring 53 is installed between the rotating shaft 51 and the rotating rod 5. A plurality of pressure rods parallel to the rotation are fixedly connected to the rotating shaft to prevent the end of the film material from passing through between the tensioning roller 6 and the rotating shaft. A coating for reducing friction (such as a Teflon coating) is provided on the front side of the pressure rod, or a row of rollers (not shown in the figure) is provided along the length direction of the pressure rod. When the winding roller 2 is replaced in the front and rear positions, the film material on the front winding roller 2 contacts the coating or the rollers on the front side of the pressure rod, avoiding scratching of the film material.

[0044] A magnetic layer is provided on the outer circumferential surface of the tensioning roller 6. The arc-shaped strip made of a magnetically conductive material can be attracted by the magnet layer, so as to generate an attractive force between the winding roller 2 and the tensioning roller 6. When the tensioning roller 6 is located above the front of the winding roller 2 and no longer revolves around the axis of the winding roller 2, the self-rotation of the winding roller 2 makes the tensioning roller 6 rotate by magnetism, so that the end of the film material clamped between the two is transported in the rotation direction of the winding roller 2. This magnetic attractive force can also provide appropriate tension during the winding process to prevent the film material from loosening or wrinkling. And at this time, under the block of the limiting rod 11, there is a large distance between the rotating rod 5 and the winding roller 2. Therefore, the rotating rod 5 cannot touch the film material, avoiding scratching of the film material.

[0045] The magnetic conductive material of the arc-shaped strip can be selected from metals such as iron, nickel, cobalt or their alloys, or soft magnetic materials such as silicon steel sheets can also be used. The magnet layer can adopt permanent magnets, such as neodymium iron boron, ferrite and other materials. The magnet layer can be evenly distributed on the outer surface of the tension roller 6, or can be distributed at intervals.

[0046] Due to the existence of magnetic attraction, the tension roller 6 can better press the film material, improving the tightness and flatness of winding. At the same time, the magnetic attraction can also drive the tension roller 6 to rotate synchronously when the winding roller 2 rotates, which is beneficial to the smooth transmission of the film material.

[0047] In practical applications, appropriate magnet strength and magnetic conductive materials can be selected according to specific requirements. For example, for thin and light film materials, weaker magnets can be selected to avoid excessive pressure on the film materials; for thicker or heavier film materials, stronger magnets can be selected to ensure sufficient pressing force.

[0048] Through the magnetic attraction, the tension roller 6 effectively presses the film material. There is no need for additional mechanical fixing devices, which simplifies the structural design and there is no need to insert or extract any fixing parts, avoiding mechanical damage to the film material. In addition, as the thickness of the film material on the winding roller 2 increases, the magnetic attraction will gradually weaken, and finally the tension roller 6 will be separated from the winding roller 2. This characteristic meets the actual requirements in the winding process, and the automatic detachment of the tension roller 6 can be realized without manual intervention, improving the automation degree and efficiency of the winding process.

[0049] Docking blocks 61 are rotatably installed at both ends of the tension roller 6. The docking blocks 61 are provided with protrusions 611 adapted to the docking grooves. The rope 52 passes through the docking groove and is connected to the protrusion 611. Thus, the scroll spring 53 applies a pulling force to the rope 52 to pull the protrusion 611, so that the protrusion 611 enters the docking groove, ensuring the stability of the connection between the docking block 61 and the rotating rod 5. In the front view projection plane, the rope 52 is located between two vertical lines passing through the two ends of the arc-shaped strip respectively. Thus, when the tension roller 6 revolves close to the winding roller 2, the rope 52 abuts against the arc-shaped strip, preventing the rope 52 from falling off the winding roller 2.

[0050] Through the cooperation of the docking groove, the protrusion 611 and the rope 52, a reliable connection between the rotating rod 5 and the docking block 61 of the tension roller 6 is realized. The docking groove provides a fixed connection point, the protrusion 611 ensures the stability of the connection, and the rope 52 provides the necessary flexibility. This connection method not only ensures the firmness of the connection, but also allows the tension roller 6 to move necessarily during the winding process. The rotating rod 5 can control the position and movement of the tension roller 6 relative to it through the rope 52, so as to realize the fixation and guiding of the end of the film material.

[0051] The docking groove at the bottom end of the rotating rod 5 can be designed into different shapes, such as circular, square or polygonal, to meet different connection requirements. The bump 611 on the docking block 61 needs to match the shape of the docking groove to ensure a stable connection. The rope 52 can be made of different materials, such as nylon, steel wire or composite materials, to meet different strength and flexibility requirements;

[0052] The depth and width of the docking groove can be adjusted according to actual needs. For example, a deeper docking groove can be designed to increase the connection stability, or a wider docking groove can be designed to facilitate the insertion and extraction of the bump 611. The size and shape of the bump 611 can also be adjusted accordingly to ensure a tight fit with the docking groove;

[0053] In addition, a guiding structure, such as a small pulley or a smooth guiding surface, can be provided in the docking groove to ensure that the rope 52 is not excessively worn during movement;

[0054] There are also various options for the connection method between the bump 611 and the rope 52. For example, small holes or grooves can be provided on the bump 611 to fix one end of the rope 52 therein, or a detachable connection method, such as a snap or a threaded connection, can be adopted to facilitate the replacement and maintenance of the rope 52.

[0055] There are multiple options for the installation position of the scroll spring. For example, the scroll spring can be directly installed at the connection between the rotating shaft 51 and the rotating rod 5, or it can be installed through an intermediate connecting member. The type and specification of the scroll spring can be selected according to actual needs to ensure the provision of appropriate torque;

[0056] The function of the scroll spring is not limited to making the bump 611 enter the docking groove, but also plays an important role throughout the winding process. When the docking block 61 is hooked to the hooking portion and the winding roller 2 makes the tensioning roller 6 revolve, the rope 52 is pulled out, and the scroll spring accumulates elastic potential energy. This design enables the rope 52 to be easily pulled out, enabling the tensioning roller 6 to disengage from the rotating rod 5, so that the tensioning roller 6 can revolve around the winding roller 2;

[0057] In addition, the use of the scroll spring also endows the system with a certain self-adaptive ability. During use, due to possible wear or clearance changes of various components, the scroll spring can compensate for these changes to a certain extent and maintain the stable fit between the bump 611 and the docking groove. This not only improves the reliability of the equipment but also extends its service life.

[0058] There are two docking mechanisms 7, which are respectively installed on two winding rollers 2. The docking mechanism 7 includes two torque bearings 71, two ratchet rings 72, and two limiting rings 73. The inner rings of the two torque bearings 71 are coaxially and fixedly connected to both ends of the winding roller 2. The ratchet ring 72 is coaxially and fixedly installed on the outer ring of the torque bearing 71. The limiting ring 73 is coaxially and fixedly arranged on the outside of the ratchet ring 72, and the radius of the limiting ring 73 is greater than the outer circle radius of the ratchet ring 72. A hooking portion is formed between the ratchets of the ratchet ring 72. A hook 612 capable of entering the hooking portion is provided on the docking block 61. When the hook 612 enters the hooking portion, the rotation of the winding roller 2 causes the torque bearing 71 to rotate, thereby causing the ratchet ring 72 to rotate. And because the tensioning roller 6 and the winding roller 2 attract each other, the hook 612 drives the docking block 61 and the tensioning roller 6 to revolve around the winding roller 2. When the tensioning roller 6 rotates 250°, the rope 52 is completely released. The inner and outer rings of the torque bearing 71 rotate relative to each other, so that the tensioning roller 6 is maintained above the front of the winding roller 2. At this time, under the action of magnetic force, the winding roller 2 rotates counterclockwise and the tensioning roller 6 rotates clockwise, so that the end of the film material is fed between the film material and the reel for winding and fixing. As the winding thickness of the film material on the reel increases, the tensioning roller 6 gradually moves away from the winding roller 2, so that the hook 612 gradually disengages from the ratchet teeth. When completely disengaged, the volute spring 53 releases elastic potential energy to pull the rope 52 to drive the docking block 61 to reset, so that the tensioning roller 6 resets.

[0059] By fixedly arranging the limiting ring 73 on the side of the ratchet ring 72 away from the middle of the winding roller 2, and the radius of the limiting ring 73 is greater than the outer circle radius of the ratchet ring 72, the hooking and positioning problem between the ratchet ring 72 and the docking block 61 can be effectively solved. After the docking block 61 is inserted into the ratchet ring 72, the limiting ring 73 prevents the docking block 61 from disengaging from the side of the ratchet teeth during the revolution of the tensioning roller 6. This can ensure that the hook 612 can accurately enter the hooking portion to achieve reliable hooking. The setting position and size of the limiting ring 73 are the key. The limiting ring 73 is fixedly arranged on the side of the ratchet ring 72 away from the middle of the winding roller 2. This position selection can effectively prevent the docking block 61 from occurring lateral deviation during the hooking process. The radius of the limiting ring 73 is greater than the outer circle radius of the ratchet ring 72. This dimensional relationship ensures that the limiting ring 73 can play a guiding and limiting role when the docking block 61 is inserted.

[0060] Specifically, when the claw 612 is inserted into the ratchet ring 72, the limit ring 73 first contacts the docking block 61, guiding the docking block 61 to enter the ratchet ring 72 along the correct path. Since the radius of the limit ring 73 is greater than the outer radius of the ratchet ring 72, the docking block 61 will always be constrained by the limit ring 73 during the insertion process, preventing it from undergoing lateral displacement. This design ensures that the claw 612 on the docking block 61 can accurately enter the engaging part of the ratchet ring 72, thus achieving reliable engagement. Further, the presence of the limit ring 73 can also prevent the docking block 61 from disengaging from the side of the ratchet during the revolution of the tensioning roller 6. When the tensioning roller 6 rotates around the axis of the winding roller 2, due to the action of centrifugal force, the docking block 61 may tend to move outwards. However, the presence of the limit ring 73 forms a physical barrier that prevents the lateral movement of the docking block 61, thereby ensuring the stability of the engagement.

[0061] Thus, the technical solution of the present invention not only solves the problem of engagement positioning, but also improves the stability and reliability of the entire winding process. Through precise engagement, it can ensure that the tensioning roller 6 always maintains the correct position during the winding process, thereby improving the winding quality of the film screen.

[0062] The specific working process steps are as follows:

[0063] Step 1: When starting up, sequentially pass the end of the film around the front winding drum and the tensioning roller 6, and then fix the end of the film to the drum on the rear winding roller 2 by bonding.

[0064] Step 2: Start the motor to drive the two winding rollers 2 to rotate synchronously through the driving mechanism, thereby winding the film.

[0065] Step 3: When winding to a certain extent, the cutting device 3 is started to cut the film between the film roll and the tensioning roller 6.

[0066] Step 4: The tensioning roller 6 rotates downward under the action of gravity, thereby causing the film to rotate downward until the tensioning roller 6 and the front winding roller 2 clamp the film. At this time, the magnetism between the tensioning roller 6 and the front winding roller 2 prevents the tensioning roller 6 from moving away from the winding roller 2.

[0067] Step 5: While the tensioning roller 6 and the front winding roller 2 clamp the film, the claw 612 engages with the ratchet ring 72, causing the docking block 61 and the tensioning roller 6 to revolve around the winding roller 2.

[0068] Step 6: When the tensioning roller 6 has revolved and rotated nearly 250°, the rope 52 is completely released, and the inner and outer rings of the torque bearing 71 rotate relative to each other, causing the tensioning roller 6 to be maintained above the front of the winding roller 2.

[0069] Step 7: The winding roller 2 rotates itself and magnetically causes the tension roller 6 to rotate itself, so that the end of the film material clamped between the two is transported in the rotation direction of the winding roller 2, and the end of the film material is sent between the film material and the winding drum for winding and fixing;

[0070] Step 8: As the winding thickness of the film material on the winding drum increases, the tension roller 6 gradually moves away from the winding roller 2, so that the claw 612 gradually disengages from the ratchet teeth;

[0071] Step 9: After the claw 612 completely disengages from the ratchet teeth, the volute spring 53 releases elastic potential energy to make the rope 52 pull the docking block 61 to reset, so that the tension roller 6 resets;

[0072] Step 10: Start the servo motor to make the rotating plate 41 rotate counterclockwise by 180°, so that the two winding rollers 2 are transposed front and back, and the tension roller 6 presses on the film material between the two winding rollers 2 to provide a tension force;

[0073] Between Step 5 and Step 8, a brand-new winding drum is installed on the rear winding roller 2;

[0074] Step 1 and Step 2 are the startup preparation steps, and Steps 3 to 10 are repeatedly cycled during continuous production.

[0075] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A winding device for a membrane material screen, comprising a frame (1) and two winding rollers (2), characterized in that, It also includes: A displacement device (4) for driving two winding rollers (2) to rotate synchronously along a circular track for position exchange, a rotating rod (5) rotatably mounted on the frame (1), a tensioning roller (6), and a docking mechanism (7). A rotating shaft (51) is mounted on the rotating rod (5), and two ropes (52) are wound around the rotating shaft (51). Docking blocks (61) capable of docking with the bottom end of the rotating rod (5) are rotatably mounted at both ends of the tensioning roller (6). The two docking blocks (61) are respectively connected to the two ropes (52). The tensioning roller (6) and the winding roller (2) are magnetic, and there is an attractive force between them. The docking mechanism (7) includes a torque bearing (71) mounted at the end of the winding roller (2). A hook portion capable of cooperating with the docking block (61) is provided on the outer ring of the torque bearing (71). When the rear winding roller (2) is winding, the docking block (61) abuts against the rotating rod (5), and the tensioning roller (6) presses the film material between the two winding rollers (2). After the film material between the rear winding roller (2) and the tensioning roller (6) is cut off, the tensioning roller (6) rotates downward with the film material end, so that the film material is clamped between the front winding roller (2) and the tensioning roller (6). The docking block (61) and the hook portion are hooked, the rope (52) is released, and the tensioning roller (6) rotates around the axis of the front winding roller (2) until it reaches the upper front of the front winding roller (2). As the film material on the front winding roller (2) thickens, the docking block (61) disengages from the hook portion, and the rope (52) retracts to drive the tensioning roller (6) to reset, and the two winding rollers (2) are exchanged front and back.

2. The winding device for the membrane material wire mesh according to claim 1, characterized in that, The displacement device (4) includes a rotating plate (41) rotatably mounted in the middle on the frame (1). The two winding rollers (2) are respectively rotatably mounted at both ends of the rotating plate (41). A driving device (42) for driving the two winding rollers (2) to rotate is mounted on the rotating plate (41).

3. The winding device for the membrane material wire mesh according to claim 2, characterized in that, The driving device (42) includes a motor fixedly mounted on the rotating plate (41). The output end of the motor is coaxially connected to one of the winding rollers (2). A synchronous mechanism for synchronously rotating the two winding rollers (2) is mounted between the two winding rollers (2).

4. The winding device for the membrane material wire mesh according to claim 1, characterized in that, A docking groove is provided at the bottom end of the rotating rod (5). A convex block (611) adapted to the docking groove is provided on the docking block (61). The rope (52) passes through the docking groove and is connected to the convex block (611).

5. The winding device for the membrane material wire mesh according to claim 4, characterized in that, The winding roller (2) is composed of a main shaft and a plurality of arc-shaped strips arranged in a circumferential array around the main shaft. A driving member for controlling the arc-shaped strips to synchronously move away from or close to the main shaft is mounted on the main shaft. When removing or sleeving a reel on the winding roller (2), the driving member makes the arc-shaped strips close to the main shaft, and the winding roller (2) becomes thinner.

6. The winding device for the membrane material wire mesh according to claim 5, characterized in that, In the front view projection plane, the rope (52) is located between two vertical lines respectively passing through the two ends of the arc-shaped strip.

7. The winding device for the membrane material wire mesh according to claim 5, characterized in that, The arc-shaped strip is made of a magnetically conductive material, and a magnetic layer is provided on the outer surface of the tensioning roller (6).

8. The winding device for the membrane material wire mesh according to claim 5, characterized in that, A volute spring (53) is mounted between the rotating shaft (51) and the rotating rod (5). The volute spring (53) is used to apply a torsion force to the rotating shaft (51), so that the convex block (611) enters the docking groove.

9. The winding device for the membrane material wire mesh according to claim 8, characterized in that, The docking mechanism (7) further includes a ratchet ring (72). A hooking portion is formed between the ratchets of the ratchet ring (72). The ratchet ring (72) is coaxially and fixedly connected to the outer ring of the torque bearing (71). A claw (612) capable of entering the hooking portion is provided on the docking block (61).

10. The winding device for the membrane material wire mesh according to claim 9, characterized in that, A limiting ring (73) is fixedly provided on one side of the ratchet ring (72) away from the middle of the winding roller (2). The radius of the limiting ring (73) is greater than the outer circle radius of the ratchet ring (72).

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