Film winding mechanism

Abstract

The invention provides a thin film winding mechanism, and belongs to the technical field of thin film processing. Comprising a rack, a film cutting piece, a turnover disc, a winding piece, a transition piece and a discharging device. Wherein the film cutting piece is arranged at one end of the rack; the overturning disc is arranged on the rack and can rotate relative to the rack; the number of the rolling pieces is at least two, the rolling pieces are arranged on the overturning disc, any one rolling piece can roll the thin film, and when the number of rolling turns of a single rolling piece is reached, the thin film is cut off by the film cutting piece, and the overturning disc is overturned; the transition piece is arranged on the overturning disc, is arranged between any two adjacent winding pieces and can rotate relative to the overturning disc; and the discharging device is arranged on the rack, and when the winding piece needs to be unloaded, the discharging device abuts against the winding piece and lifts the winding piece till the winding piece is unloaded from the overturning disc. The winding tension is increased, so that when thick paper base materials larger than 150 gsm are wound, winding stability and winding surface smoothness can be kept, and continuous production can be achieved without shutdown.

Description

Technical Field

[0001] The invention belongs to the technical field of film processing, and more specifically, relates to a film winding mechanism. Background Art

[0002] The field of thin film processing technology involves the preparation, modification, coating, compounding and molding of thin film materials, and is an important branch of materials science and engineering technology. It covers the entire process from raw material selection, formula design to processing and molding, and performance regulation, and is widely used in electronics, optoelectronics, packaging, medical, aerospace and other fields. With the advancement of science and technology, thin film processing technology continues to innovate, such as precision coating technology, nano-scale thin film preparation technology, multifunctional composite film technology, etc., aiming to achieve high performance, functionalization and intelligence of thin films. At the same time, environmental protection and sustainable development have also become important development directions in this field, driving thin film processing technology towards a greener and more efficient direction.

[0003] Film processing mainly includes biaxial stretching production lines, cast film production lines, extrusion composite production lines, blown film production lines, coating production lines, etc. They heat, melt, and extrude plastic particles into thin films through extruders. They are basic equipment for film processing and are widely used in packaging, construction, agriculture and other fields. They can efficiently produce film products that meet the requirements. Common film production lines include traction devices, winding devices, heating devices, cooling devices, etc. The winding device is mainly used to roll the produced plastic film, metal film and other materials into rolls for easy storage and transportation.

[0004] The winding device in the existing film production line is usually equipped with a winding shaft (generally referred to as the winding shaft here), which is driven by the driving force to rotate the winding shaft to reel the film. The extrusion composite production line is affected by the thickness, width, material and other factors of the substrate during the reeling process, and the requirements for the winding device are higher. In particular, when reeling thick paper substrates (films greater than 150gsm), greater tension is required to maintain stability and the flatness of the reeling surface, and friction reeling is usually used. However, friction reeling has a greater impact on the product surface. When the product needs further processing in the subsequent process, it is difficult to obtain a better surface effect. When the existing film production line is in operation, it is necessary to replace the reel of different specifications at any time to meet different substrates, especially for substrates greater than 150gsm. In addition, since the extrusion temperature of the extruder in the extrusion composite production line needs to reach above 300°C, which is close to the decomposition temperature of the extruded material, the production line cannot be shut down and can only be produced continuously. The existing film production line needs to be shut down to replace the reel when replacing it, so it cannot meet the actual production needs. Summary of the invention

[0005] The main purpose of the present application is to provide a film winding mechanism, which provides at least two winding parts in a central winding manner, increases the winding tension so that it is suitable for thick paper substrates with a grammage greater than 150gsm, can maintain the stability of the winding and the flatness of the winding surface, and can produce continuously without stopping the machine. It is also equipped with a unloading device that can unload the wound film roll from the frame, greatly reducing the work intensity of the workers.

[0006] In order to achieve the above objectives, the present application proposes a film winding mechanism, comprising: frame; The film cutting part is mounted at one end of the frame and is provided with a double-arm assembly, which can move toward each other to cut the film up and down; The turning plate is mounted on the frame and can rotate relative to the frame; There are at least two winding pieces, which are mounted on the turning disk. Any one of the winding pieces can wind up the film. When a single winding piece reaches the set number of winding turns, the film cutting piece cuts the film and the turning disk turns over. A transition piece is mounted on the turning disk and is disposed between any two adjacent winding pieces and can rotate relative to the turning disk; The unloading device is arranged on the frame. When the winding piece needs to be unloaded, the unloading device abuts against the winding piece and lifts it until the winding piece is unloaded from the turning disk.

[0007] Furthermore, the dual-arm assembly comprises: A first swing arm, the film cutting member is provided with a fixing frame, the fixing frame is mounted on the frame, both ends of the first swing arm are respectively hinged with first driving members, the first driving member is fixed on the fixing frame; A second swing arm, both ends of which are respectively hinged on a fixing frame, and a second driving member is fixedly connected to the fixing frame, and the second driving member is hinged to the second swing arm; The first swing arm and the second swing arm are both provided with a film cutting knife group with adjustable angles along the tilt direction of film transmission, and a rotatable pressing roller is provided at a position adjacent to the film cutting knife group.

[0008] In this solution, the coordinated movement of the first swing arm and the second swing arm realizes the bidirectional cutting of the film up and down. Compared with the traditional unidirectional film cutting method, by cutting the film in both directions on the upper and lower sides, the lower knife can be cut up or the upper knife can be cut down according to different winding directions, so as to improve the application of the actual use scenarios of film cutting.

[0009] Furthermore, the first swing arm is hinged with a swing arm frame, the second swing arm is provided with a swing arm frame, and the film cutting knife group includes: A third driving member is fixed on the swing arm frame; The arc-shaped swing member is mounted on the swing arm frame and is drivingly connected to the third driving member, and can be driven by the third driving member to shift an angle; A knife holder is fixed on the arc-shaped pendulum, and a serrated knife is provided on the knife holder; The introduction roller is arranged adjacent to the tool holder and is mounted on the arc-shaped pendulum.

[0010] In this solution, the arc-shaped pendulum is driven by the third driving member to shift its angle, so that the position and angle of the serrated knife can be accurately controlled, thereby achieving precise cutting of the film.

[0011] Furthermore, the pressure roller comprises: A fourth driving member is fixed to the swing arm frame, and the driving end thereof can be extended and retracted along the direction of film transmission; One end of the pressure roller is drivingly connected to the driving end of the fourth driving member and can rotate along the tangential direction of the film transmission.

[0012] In this solution, the driving end of the fourth driving member can be extended and retracted in the direction of film transmission, which means that the pressure roller can be adjusted in real time according to the position and tension of the film, ensuring that the film is effectively compacted before cutting, improving the stability of the film during the cutting process, and reducing the cutting error caused by film shaking or deviation. The pressure roller can rotate along the tangent direction of the film transmission. This design allows the pressure roller to roll in the direction of film transmission while compacting the film, reducing friction and damage between the film and the film, and effectively protecting the surface quality of the film.

[0013] Furthermore, the winding device comprises: A rotating shaft, one end of which is connected to a fifth driving member and rotates under the drive of the fifth driving member, the other end of the rotating shaft is penetrated by a flip disk, the outer side of the flip disk is provided with a pneumatic clamping mechanism, the rotating shaft is mounted on the pneumatic clamping mechanism, and can rotate relative to the pneumatic clamping mechanism; The pneumatic shaft is connected to the rotating shaft by a pneumatic clamping mechanism. When the pneumatic clamping mechanism disconnects the pneumatic shaft from the rotating shaft, the pneumatic shaft can be unloaded by the unloading device. The paper tube is sleeved on the inflatable shaft. The inflatable shaft is provided with a plurality of airbags and key positions. The airbags are connected to the inflation port of the inflatable shaft. When the inflation port inflates the airbags, the airbags lift the key positions and fix them to the paper tube. The paper tube is used for winding the substrate.

[0014] In this solution, the rotating shaft is driven to rotate by the fifth driving member, thereby driving the inflatable shaft to perform the winding operation. This design makes the winding process more efficient and stable. At the same time, a flip disk is passed through the other end of the rotating shaft and combined with a pneumatic clamping mechanism, so that the winding member can easily change its position under the drive of the flip disk, thereby improving the flexibility of winding. Among them, the setting of the airbag not only simplifies the replacement process of the winding roller, but also improves the stability of the winding roller during the rotation process, avoiding the reduction of winding quality due to looseness. In addition, due to the presence of the inflatable shaft, the paper tube can be evenly and tightly attached to the inflatable shaft during the winding process, reducing the wrinkling and wrinkling of the film during the winding process caused by the position offset of the paper tube and the inflatable shaft, thereby protecting the quality of the film.

[0015] Furthermore, the pneumatic clamping mechanism includes: a clamping cylinder fixed on a frame, the clamping cylinder is arranged adjacent to the rotating shaft, a sleeve is arranged between the rotating shaft and the inflatable shaft, the sleeve and the clamping cylinder are connected to each other through a pipeline, and when the cylinder inflates the sleeve, the inflatable shaft is fixedly connected to the rotating shaft.

[0016] The connection and disconnection of the rotating shaft and the inflatable shaft are achieved through the process of inflating and deflating the sleeve with the clamping cylinder; that is, when the clamping cylinder inflates the sleeve with air, the sleeve bulges, the rotating shaft and the inflatable shaft are continuously held tightly, the rotating shaft rotates, and the inflatable shaft also rotates; when the clamping cylinder deflates the sleeve with air, the connection between the rotating shaft and the inflatable shaft is disconnected, and the inflatable shaft can be unloaded from the sleeve by the unloading device.

[0017] Furthermore, the transition piece comprises: three rotating rollers distributed in a triangular shape, the rollers are mounted on a turning plate, and gaps are preset between adjacent rollers.

[0018] In this solution, the transition piece adopts a design of three rotating rollers in a triangular distribution. This layout helps to optimize the transmission path of the film during the winding process. The three rollers can stably support and guide the film, reduce the shaking and deviation of the film during the transmission process, and ensure that the film can accurately and smoothly enter the next winding piece for winding. The preset gap between adjacent rollers provides a certain buffer space for the film, allowing the film to stretch naturally during the transmission process, reducing the wrinkles caused by uneven tension or poor transmission. This is of great significance for improving the flatness and quality of the wound film.

[0019] Furthermore, the unloading device comprises: a sixth driving member, one end of which is hinged to the frame; A discharge swing arm is hinged on the frame and is hinged to the other end of the sixth driving member, and the sixth driving member can drive the discharge swing arm to swing relative to the frame; The seventh driving member is fixed on the unloading swing arm, and the driving end of the seventh driving member is fixedly connected to the shaft holding arm. The seventh driving member can drive the shaft holding arm to lift the winding member.

[0020] Furthermore, the flip plate comprises: A first rotating disk, a rotating shaft is fixedly connected at the center thereof, the rotating shaft is drivingly connected to a sixth driving member, and the sixth driving member can output a driving force to rotate the first rotating disk; The second rotating disk is coaxially arranged with the first rotating disk, and the winding member and the transition member are arranged between the first rotating disk and the second rotating disk.

[0021] In this solution, the turning disc is composed of a first rotating disc and a second rotating disc, which are coaxially arranged so that the winding member and the transition member can be stably mounted between the two. The sixth driving member outputs a driving force to drive the first rotating disc (and then the second rotating disc) to rotate, thereby realizing automatic turning and repositioning of the winding member. This design greatly improves the automation and efficiency of winding, and reduces manual intervention and downtime.

[0022] Furthermore, the frame includes: wall panels arranged opposite to each other, the wall panels are preset with coaxially arranged rotation accommodating grooves, a slewing support is sleeved in the rotation accommodating groove, and the slewing support is rotatably connected to the flip plate.

[0023] In this solution, the wallboard is the main load-bearing component of the frame. The design of the relative arrangement and the preset coaxial rotation accommodating groove provides a stable support foundation for the turnover disk. The rotary support sleeve is arranged in the rotation accommodating groove and is closely connected with the turnover disk to form a stable rotation structure. This design enhances the stability and rigidity of the entire winding mechanism, so that it can maintain stable operation even when running at high speed or bearing a large load.

[0024] The film winding mechanism proposed by the present invention has the following beneficial effects: The present invention realizes a seamless winding process by configuring at least two winding pieces: by designing the film cutting piece of the double-arm assembly, accurate upper and lower cutting of the film is realized, effectively ensuring that both sides of the film are subjected to equal pressure during the cutting process, thereby maintaining the flatness of the cut surface of the film; the configuration of the turning disk and at least two winding pieces thereon allows automatic switching to another winding piece to continue working after a single winding piece reaches a set number of turns, and at the same time cooperates with the film cutting piece to complete the instant cutting of the film, greatly improving the production efficiency and automation level; the setting of the transition piece optimizes the conversion process between the winding pieces, ensures a smooth transition of the film, and reduces the damage to the film that may be caused by replacing the winding piece; and the introduction of the unloading device realizes the rapid unloading and replacement of the winding piece without interrupting the production process, further enhancing the adaptability and flexibility of the production line, especially for the winding of thick paper substrates (greater than 150gsm), it can stably provide the required tension and maintain the flatness of the winding surface, meeting the needs of continuous, efficient and stable winding of substrates of different specifications in actual production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a side structural schematic diagram of the film winding mechanism of the present invention; Figure 2 It is a schematic diagram of the side structure of the film cutting member of the present invention; Figure 3 It is a schematic diagram of the overall structure of the film cutting member of the present invention; Figure 4 It is a structural schematic diagram of the film cutting knife group of the present invention; Figure 5 It is a structural schematic diagram of the frame of the present invention; Figure 6 It is a structural schematic diagram of the flip plate of the present invention; Figure 7 It is a side structural schematic diagram of an embodiment of the film winding mechanism of the present invention; Figure 8 It is a structural schematic diagram of the connection relationship between the rotating shaft and the inflatable shaft of the present invention.

[0026] In the figure, 1, frame, 11, wall panel, 12, distance rod, 13, rotating accommodating groove, 2, film cutting member, 21, fixed frame, 22, first swing arm, 23, first driving member, 24, second swing arm, 25, second driving member, 26, film cutting knife group, 261, third driving member, 262, arc swing member, 263, knife holder, 264, serrated knife, 265, introduction roller, 27, pressure roller member, 271, fourth driving member, 272, pressure roller, 3, turning disk, 31, first rotating disk, 32, rotating shaft, 33, second rotating disk, 4, winding member, 41, rotating shaft, 42, pneumatic clamping mechanism, 421, clamping cylinder, 422, bushing, 43, air shaft, 431, key position, 5, transition member, 6, roller group, 7, turning power motor, 8, driving gear, 9, driven large gear. DETAILED DESCRIPTION

[0027] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0028] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0029] Example The winding device of the existing multi-layer film laminating machine (film production line) is usually equipped with a winding shaft, which drives the winding shaft to rotate under the action of the driving force, so as to wind up the film. The extrusion laminating production line is affected by the thickness, width, material and other factors of the substrate during the winding process, and the requirements for the winding device are higher. In particular, when winding thick paper substrates (films greater than 150gsm), greater tension is required to maintain stability and the flatness of the winding surface, and friction winding is usually used. However, friction winding has a greater impact on the surface of the product. When the product needs further processing in the subsequent process, it is difficult to obtain a better surface effect. When the existing film production line is in operation, it is necessary to replace the winding shaft of different specifications at any time to meet different substrates, especially for substrates greater than 150gsm. In addition, since the extrusion temperature of the extruder in the extrusion laminating production line needs to reach above 300℃, which is close to the decomposition temperature of the extruded material, the production line cannot be stopped and can only be produced continuously. However, the existing film production line needs to be stopped to replace the winding shaft when replacing it, so it cannot meet the actual production needs.

[0030] Based on this, in order to solve the above-mentioned problems of not being able to meet the tension, rolling surface flatness and continuous production when rolling up thick paper substrates (films greater than 150gsm), this embodiment provides a film rolling mechanism, referring to Figure 1-6 , including: a frame 1, a film cutting member 2, a reversing disc 3, a winding member 4, a transition member 5 and a discharge device. Among them, the frame 1 is the most important supporting component, which includes: wall panels 11 arranged opposite to each other, a plurality of distance rods 12 are fixedly sleeved between the wall panels 11, and a coaxially arranged rotation accommodating groove 13 is preset on the wall panel 11, and a slewing support is sleeved in the slewing accommodating groove 13, and the slewing support is rotatably connected to the reversing disc 3. In this embodiment, reference Figure 7The slewing support mainly includes a flip power motor mounted on the wallboard 11, a driving gear is meshed on the output gear of the flip power motor, and a driven large gear is arranged at the edge of the flip disk 3. The driving gear and the driven large gear are meshed with each other, so that the driving force of the flip power motor can be transmitted to the flip disk 3, so that the flip disk 3 can rotate. The wallboard 11 is the main load-bearing component of the frame 1. The design of the relative arrangement and the preset coaxial rotation accommodating groove 13 of the wallboard 11 provides a stable support foundation for the flip disk 3. The slewing support is sleeved in the rotation accommodating groove 13 and is closely connected with the flip disk 3 to form a stable rotation structure. This design enhances the stability and rigidity of the entire winding mechanism, so that it can maintain stable operation even when running at high speed or bearing a large load. At the same time, the slewing support, as a connecting component between the flip disk 3 and the frame 1, has a high-precision rotation performance. It can reduce the adverse effects on the winding quality caused by shaking or deviation during the rotation process while ensuring the smooth rotation of the flip disk 3. This high-precision rotation design helps to improve the accuracy and consistency of winding. The distance rods 12 are sleeved between the relatively arranged wall panels 11, which play the role of reinforcing and stabilizing the distance between the wall panels 11. This design enhances the overall rigidity of the frame 1, so that the frame 1 can maintain a stable shape and is not easily deformed or displaced when running at high speed or bearing a large load. In addition, the existence of the distance rods 12 ensures that the relative positions between the wall panels 11 are fixed, thereby improving the positioning accuracy of the flip disk 3 and the winding member 4 on the frame 1. This is of great significance for ensuring the accuracy and consistency of winding, and reducing the winding quality problems caused by position deviation. A transmission edge cover is fixedly connected to the side end of one of the wall panels 11, which is used to store and shelve transmission parts such as drive motors. In addition, a discharge device is installed on the frame. When the winding member needs to be unloaded, the discharge device abuts against the winding member and lifts it until the winding member is unloaded from the flip disk. In particular, when the substrate is thick, the weight of the entire roll can reach 1 ton when the winding is completed. The use of the unloading device greatly reduces the labor intensity of the workers and ensures the safety of the workers.

[0031] In this embodiment, please refer to Figure 6, the flip disk 3 includes: a first rotating disk 31 and a second rotating disk 33. A rotating shaft 32 is fixedly installed at the center of the first rotating disk 31, and the rotating shaft 32 is driven and connected with a sixth driving member, and the sixth driving member can output a driving force to rotate the first rotating disk 31. Among them, the sixth driving member can be the output shaft of the driving motor, which is directly connected to the rotating shaft 32 through a gear transmission connection. It can also be that the driving motor uses a gear belt transmission, and a pulley is fixedly installed at the rotating shaft 32, and the pulley is driven and connected to the driving motor through a belt, and the driving motor is directly fixed on the frame 1. The second rotating disk 33 is coaxially arranged with the first rotating disk 31, and the winding member 4 and the transition member 5 are arranged between the first rotating disk 31 and the second rotating disk 33. In this scheme, the flip disk 3 is composed of the first rotating disk 31 and the second rotating disk 33, and the two are coaxially arranged, so that the winding member 4 and the transition member 5 can be stably erected between the two. The sixth driving member outputs driving force to drive the first rotating disk 31 (and then the second rotating disk 33) to rotate, thereby realizing automatic flipping and repositioning of the winding member 4. This design greatly improves the automation and efficiency of winding, and reduces manual intervention and downtime.

[0032] In some embodiments, reference Figure 1 as well as Figure 6 , a rolling surface is provided at the edge of the first rotating disk 31, and a plurality of (four in the figure) roller groups 6 are provided on the frame 1, and the roller group 6 is connected to the rolling surface for relative rotation. In this scheme, the relative rotation connection between the rolling surface and the roller group 6 effectively reduces the direct friction between the first rotating disk 31 and the frame 1 during the rotation process. This design not only reduces the heat and noise generated by friction, but also prolongs the service life of the first rotating disk 31 and the roller group 6, and reduces the frequency of parts replacement due to wear. At the same time, the setting of the roller group 6 makes the first rotating disk 31 smoother and more stable when rotating. The roller can roll and support the first rotating disk 31, reducing the resistance and vibration during the rotation process, thereby improving the operation stability and reliability of the entire winding mechanism. It should be noted that in this embodiment, the number of roller groups 6 is not limited, and can be an odd number or an even number, depending on the actual production environment. In addition, the rolling surface facing the roller assembly 6 is provided with a plurality of saw teeth A, and the side of the roller assembly 6 facing the saw teeth may be saw teeth B, and the saw teeth A and the saw teeth B can effectively mesh to prevent the first rotating disk 31 from slipping and failing during rotation.

[0033] The film cutting unit 2 is mounted at one end of the frame 1 and is adjacent to the flip disk 3. A double-arm assembly is driven and connected to the film cutting unit 2. The double-arm assembly can move toward each other to cut the film up and down. In order to further explain the film cutting process and its corresponding functions, it is necessary to explain the specific structure of the double-arm assembly. The double-arm assembly includes: Figure 2The first swing arm 22 and the second swing arm 24 are shown. Among them, the film cutting member 2 mainly includes a fixed frame 21, and the fixed frame 21 is directly fixed to the frame 1 by fasteners such as bolts and latches, and the first drive member 23 is hinged at both ends of the first swing arm 22, and the first drive member 23 is fixed to the fixed frame 21. In this embodiment, the first drive member 23 can be an electric push rod or a cylinder, and the cylinder is effectively connected to an external air pressure pump through a pipeline, and the electric push rod is directly connected to an external power supply through a circuit. When the external power supply supplies power to the electric push rod, the electric push rod can take action and extend and retract. The specific extension principle is the principle of the electric telescopic rod commonly used in the prior art, so it will not be repeated here. The working principle that the air pressure pump inflates the cylinder and the piston of the cylinder pushes the rod to extend is also the common cylinder pushing principle in the prior art, so it will not be repeated here. The ends of the second swing arm 24 are respectively hinged on the fixed frame 21, and the fixed frame 21 is fixedly connected with a second driving member 25, and the second driving member 25 is hinged with the second swing arm 24. The second driving member 25 can also be an electric push rod or a cylinder, and its principle is the same as that of the first driving rod. It should be noted that the first swing arm 22 and the second swing arm 24 are both installed with a film cutting knife group 26 that can adjust the angle along the tilt direction of the film transmission, and a rotatable rubber pressure roller 27 is provided at a position adjacent to the film cutting knife group 26. Through the coordinated movement of the first swing arm 22 and the second swing arm 24, compared with the traditional one-way film cutting method, by bidirectionally cutting the film on the upper and lower sides, the means of cutting the film upward with the lower knife or cutting the film downward with the upper knife can be adopted for different winding directions to improve the application of the actual use scenario of the film cutting. Specifically, when the winding direction is counterclockwise, the method of cutting the film upward with the lower knife can be adopted, and when the winding direction is clockwise, the method of cutting the film downward with the upper knife can be adopted. The first swing arm 22 and the second swing arm 24 are both provided with a film cutting knife group 26 with adjustable angles, which means that the angle of the film cutting knife group 26 can be flexibly adjusted according to the thickness, material and other characteristics of different films to achieve the best film cutting effect, thereby enhancing the adaptability and flexibility of the equipment. The design of the pressure roller 27 can compact the film before cutting to ensure the stability of the film during cutting. At the same time, the rubber pressure roller 27 can also protect the surface of the film to a certain extent to prevent it from being damaged unnecessary during the cutting process.

[0034] Specifically, refer to Figure 3-4, the first swing arm 22 and the second swing arm 24 are both provided with a swing arm frame, and the film cutting knife group 26 includes: a third driving member 261 fixed on the swing arm frame (the working principle is the same as that of the first driving member 23 or the second driving member 25, which will not be repeated here), an arc-shaped swing member 262 mounted on the swing arm frame and drivingly connected to the third driving member 261, and the arc-shaped swing member 262 can be angularly offset under the drive of the third driving member 261. A knife holder 263 is fixed to the arc-shaped swing member 262 by bolts, and a serrated knife 264 is fixedly connected to the knife holder 263. An introduction roller 265 is also mounted on the arc-shaped swing member 262, and the introduction roller 265 can rotate relative to the arc-shaped swing member 262. In this solution, the arc-shaped swing member 262 is driven by the third driving member 261 to cause an angular offset, so that the position and angle of the serrated knife 264 can be accurately controlled, thereby achieving accurate cutting of the film. This design improves the accuracy of film cutting and ensures the neatness and quality of the rolled film. The design of the arc-shaped swing element 262 allows the sawtooth knife 264 to adjust its angle within a certain range, which means that the device can flexibly adjust the angle and strength of film cutting according to the thickness, width or material characteristics of different films to meet different film cutting requirements. The introduction roller 265 can guide the film into the transition piece 5 and finally reach the winding piece 4 to achieve the winding of the film.

[0035] In some embodiments, reference Figure 3 The pressure roller 27 includes: a fourth driving member 271 fixed on the swing arm frame and whose driving end can be extended and retracted along the direction of film transmission, and a pressure roller 272. The fourth driving member 271 can also be an electric push rod or a cylinder driving component. One end of the pressure roller 272 is driven and connected to the driving end of the fourth driving member 271, and can rotate along the tangential direction of film transmission. In this solution, the driving end of the fourth driving member 271 can be extended and retracted along the direction of film transmission, which means that the pressure roller 272 can be adjusted in real time according to the position and tension of the film, ensuring that the film is effectively compacted before cutting, improving the stability of the film during the cutting process, and reducing the cutting error caused by film shaking or deviation. The pressure roller 272 can rotate along the tangential direction of film transmission. This design allows the pressure roller 272 to roll in the direction of film transmission while compacting the film, reducing friction and damage between the film and the film, and effectively protecting the surface quality of the film.

[0036] In order to specifically explain the process of film winding by the winding piece 4, it is necessary to explain the positional relationship and connection relationship between the winding piece 4 and other components, and also to explain its specific structure. Among them, the winding piece 4 is provided with at least two (two centrally symmetrical winding pieces 4 in the figure) and is restricted on the flip disk 3 through the mounting hole, and the winding piece 4 itself can rotate relative to the mounting hole, so the mounting hole only limits the linear position of the winding piece 4, but does not limit its rotational position. Any winding piece 4 can wind up the film, and when a single winding piece 4 reaches the set number of winding turns, the film cutting piece 2 cuts the film, and the flip disk 3 flips, thereby driving the winding piece 4 to flip. Specifically, refer to Figure 6 The winding member 4 includes: a rotating shaft 41 and an inflatable shaft 43. One end of the rotating shaft 41 is connected to a fifth driving member and rotates under the drive of the fifth driving member. The other end of the rotating shaft 41 is penetrated by a reversing plate 3 through a mounting hole. A pneumatic clamping mechanism 42 is provided on the outer side of the reversing plate 3. The rotating shaft 41 is mounted on the pneumatic clamping mechanism 42 and can rotate relative to the pneumatic clamping mechanism 42. Among them, the fifth driving member can also be an electric push rod or a cylinder pusher. The inflatable shaft 43 is connected to the rotating shaft 41 through a pneumatic clamping mechanism. When the pneumatic clamping mechanism 42 disconnects the connection between the inflatable shaft 43 and the rotating shaft 41, the inflatable shaft 43 can be unloaded by the unloading device. Several air bags and key positions 431 are provided on the inflatable shaft 43 along the axial direction. A paper tube for winding a film is sleeved on the inflatable shaft 43. The air bag is connected to the inflation port of the inflatable shaft 43. When the inflation port inflates the air bag, the air bag lifts the key position 431 and fixes it with the paper tube. In this solution, the fifth driving member drives the rotating shaft 41 to rotate, thereby driving the inflatable shaft 43 to perform a winding operation. This design makes the winding process more efficient and stable.

[0037] In the present invention, when the fifth driving member is a motor, the parameters are as follows: 1. Roll diameter range: minimum diameter: 100mm; maximum diameter: 1800mm.

[0038] 2. Start-up tension range: 50-550N.

[0039] 3. Speed ​​range: Maximum line speed: 180m / min; Minimum production speed 50m / min.

[0040] 4. Motor parameters: Motor rated speed: 1500r / min; theoretical maximum operating frequency: 130Hz.

[0041] 5. Maximum roll weight: 1800kg.

[0042] Among them, according to the power system calculation: 1. Speed: Speed ​​range of air shaft: 1), 180 / (3.14*0.1)=573.2r / min; 2), 50 / (3.14*1.8)=8.85r / min.

[0043] 2. Motor speed range (under the premise of controlled output torque): 58r / min (2Hz*29)-3480r / min (120Hz*29), the total reduction ratio is: 58 / 8.85=6.55; 3480 / 573.2=6.07; the final decision is to take the total speed ratio as 6.3; this ensures stable torque output when the roll is large, and when the roll is small, the torque required is less, so it can be overclocked appropriately.

[0044] 3. Calculate the maximum torque: 550N*0.9m=495Nm. Reversely calculate the maximum torque that the motor needs to provide: 495 / 6.3=78.5Nm, which corresponds to a 15KW four-pole variable frequency motor.

[0045] In order to consider the moment of inertia at the maximum roll and ensure the response stiffness of the instantaneous output, the calculation safety factor of the torque needs to be set to 2, and the motor power is selected as a 30-kilowatt four-level variable frequency motor, which is equipped with a heavy-duty inverter drive. It can be seen that the present invention can meet the continuous torque stability of high-weight paper winding, and can cope with the response stiffness of high torque and large roll weight, so that the equipment can meet the response requirements of high and low speeds, large and small roll diameters, and different roll weights, so that when winding a large-weight product, a moderately tight roll can be wound, so that the entire winding process is smooth and stable.

[0046] At the same time, the other end of the rotating shaft 41 is penetrated by a flip disk 3 and combined with a pneumatic clamping mechanism 42, so that the winding piece 4 can easily change its position under the drive of the flip disk 3, thereby improving the flexibility of winding. Among them, the provision of the airbag not only simplifies the replacement process of the winding roller, but also improves the stability of the winding roller during the rotation process, and avoids the decline in winding quality due to looseness. In addition, due to the presence of the pneumatic shaft 43, the film can be evenly and tightly attached to the roller surface during the winding process, reducing the wrinkles and wrinkles of the film during the winding process, thereby protecting the quality of the film. It should be noted that the pneumatic clamping mechanism 42 referred to in the present invention is fixed to the side end of the flip disk 3, and the pneumatic clamping mechanism 42 is connected to an external air pump pipeline, and the rotating shaft 41 and the pneumatic shaft 43 are clamped by an external air pump, and a bearing is usually provided in the clamping area to realize the relative rotation of the rotating shaft 41 and the pneumatic clamping mechanism 42. Specifically, refer to Figure 8The pneumatic clamping mechanism 42 includes: a clamping cylinder 421 fixed on the frame, the clamping cylinder is arranged adjacent to the rotating shaft 41, a sleeve 422 is arranged between the rotating shaft 41 and the inflatable shaft 43, the sleeve 422 and the clamping cylinder are connected to each other through a pipeline, and when the cylinder inflates the sleeve 422, the inflatable shaft 43 is fixedly connected to the rotating shaft 41. The connection and disconnection of the rotating shaft 41 and the inflatable shaft 43 are realized by the process of the clamping cylinder inflating and deflating the sleeve 422; that is, when the clamping cylinder inflates the sleeve 422, the sleeve 422 bulges, the rotating shaft 41 and the inflatable shaft 43 are continuously held tightly, the rotating shaft 41 rotates, and the inflatable shaft 43 also rotates; when the clamping cylinder 421 deflates the sleeve 422, the connection between the rotating shaft 41 and the inflatable shaft 43 is disconnected, and the inflatable shaft 43 can be unloaded from the sleeve 422 by the unloading device.

[0047] In the present invention, the unloading device includes: a sixth driving member, a unloading swing arm, and a seventh driving member. One end of the sixth driving member is hinged to the frame, and the other end of the sixth driving member is hinged to the unloading swing arm. The sixth driving member can drive the unloading swing arm to swing relative to the frame. The seventh driving member is fixed to the unloading swing arm, and the driving end of the seventh driving member is fixedly connected to the shaft holding arm. The seventh driving member can drive the shaft holding arm to lift the winding member. Through the hinged setting and driving action of the sixth driving member, the unloading swing arm can be flexibly swung relative to the frame, providing the necessary power and path for the unloading of the winding member; the ingenious combination of the seventh driving member and the shaft holding arm ensures the stable lifting and separation of the winding member during the unloading process. The whole process does not require manual intervention and has a high degree of automation. This design not only greatly shortens the time for changing the winding member and reduces the downtime waiting of the production line, but also significantly improves the safety and efficiency of the operation, especially in the scene of continuous production and unable to stop, it shows its unique advantages and value. Specifically, when the substrate needs to be unloaded, the fifth driving member stops working, and the clamping cylinder of the pneumatic clamping mechanism 42 deflates the sleeve (the sleeve is a U-shaped structure). After the sleeve is deflated, the rotating shaft is disconnected from the air shaft. Then the sixth driving member is driven to swing the unloading swing arm to the bottom of the air shaft. Then the seventh driving member is driven to raise the shaft holding arm upward until the air shaft is lifted from the sleeve. Then the sixth driving member is driven to swing the unloading swing arm so that the air shaft is directly away from the position connected to the rotating shaft.

[0048] In addition, the transition piece 5 is mounted on the flip disk 3 and can rotate relative to the flip disk 3, and is arranged between any two adjacent winding pieces 4 and can rotate relative to the flip disk 3. The transition piece 5 includes: three rotating rollers in a triangular distribution, the rollers are mounted on the flip disk 3, and a gap is preset between adjacent rollers. In this scheme, the transition piece 5 adopts a design of three rotating rollers in a triangular distribution. This layout helps to optimize the transmission path of the film during the winding process. The three rollers can stably support and guide the film, reduce the jitter and deviation of the film during the transmission process, and ensure that the film can accurately and smoothly enter the next winding piece 4 for winding. The preset gap between adjacent rollers provides a certain buffer space for the film, so that the film can stretch naturally during the transmission process, reducing the wrinkle phenomenon caused by uneven tension or poor transmission. This is of great significance for improving the flatness and quality of the wound film.

[0049] In the present invention, the first driving member, the second driving member, the third driving member, the fourth driving member, the fifth driving member, the sixth driving member, and the seventh driving member may be hydraulically driven, including components such as hydraulic cylinders and hydraulic push rods (existing technology), and the hydraulic push rods are pushed by the hydraulic cylinders to enable the hydraulic push rods to perform telescopic movements. They may also be pneumatically driven, including components such as pneumatic cylinders and pneumatic push rods (existing technology). They may also be electric push rods.

[0050] The present invention realizes a seamless winding process by configuring at least two winding pieces: by designing the film cutting piece of the double-arm assembly, accurate upper and lower cutting of the film is realized, effectively ensuring that both sides of the film are subjected to equal pressure during the cutting process, thereby maintaining the flatness of the cut surface of the film; the configuration of the turning disk and at least two winding pieces thereon allows automatic switching to another winding piece to continue working after a single winding piece reaches a set number of turns, and at the same time cooperates with the film cutting piece to complete the instant cutting of the film, greatly improving the production efficiency and automation level; the setting of the transition piece optimizes the conversion process between the winding pieces, ensures a smooth transition of the film, and reduces the damage to the film that may be caused by replacing the winding piece; and the introduction of the unloading device realizes the rapid unloading and replacement of the winding piece without interrupting the production process, further enhancing the adaptability and flexibility of the production line, especially for the winding of thick paper substrates (greater than 150gsm), it can stably provide the required tension and maintain the flatness of the winding surface, meeting the needs of continuous, efficient and stable winding of substrates of different specifications in actual production.

[0051] In the description of the present invention, it is necessary to understand that the terms "middle", "length", "up", "down", "front", "back", "vertical", "horizontal", "inside", "outside", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0052] In the present invention, unless otherwise clearly specified and limited, the first feature "on" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. "Multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0053] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The above is only for explaining the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention without creative work should be included in the protection scope of the present invention.

Claims

1. Film winding mechanism, characterized in that: include: frame; The film cutting part is mounted at one end of the frame and is provided with a double-arm assembly, which can move toward each other to cut the film up and down; The turning plate is mounted on the frame and can rotate relative to the frame; There are at least two winding pieces, which are mounted on the turning disk. Any one of the winding pieces can wind up the film. When a single winding piece reaches the set number of winding turns, the film cutting piece cuts the film and the turning disk turns over. A transition piece is mounted on the turning disk and is disposed between any two adjacent winding pieces and can rotate relative to the turning disk; The unloading device is arranged on the frame. When the winding piece needs to be unloaded, the unloading device abuts against the winding piece and lifts it until the winding piece is unloaded from the turning disk.

2. The film winding mechanism according to claim 1, characterized in that: The double arm assembly comprises: A first swing arm, the film cutting member is provided with a fixing frame, the fixing frame is mounted on the frame, both ends of the first swing arm are respectively hinged with first driving members, the first driving member is fixed on the fixing frame; A second swing arm, both ends of which are respectively hinged on a fixing frame, and a second driving member is fixedly connected to the fixing frame, and the second driving member is hinged to the second swing arm; The first swing arm and the second swing arm are both provided with a film cutting knife group with adjustable angles along the tilt direction of film transmission, and a rotatable pressing roller is provided at a position adjacent to the film cutting knife group.

3. The film winding mechanism according to claim 2, characterized in that: The first swing arm is hinged with a swing arm frame, the second swing arm is provided with a swing arm frame, and the film cutting knife group includes: A third driving member is fixed on the swing arm frame; The arc-shaped swing member is mounted on the swing arm frame and is drivingly connected to the third driving member, and can be driven by the third driving member to shift an angle; A knife holder is fixed on the arc-shaped pendulum, and a serrated knife is provided on the knife holder; The introduction roller is arranged adjacent to the tool holder and is mounted on the arc-shaped pendulum.

4. The film winding mechanism according to claim 2, characterized in that: The pressure roller member comprises: A fourth driving member is fixed to the swing arm frame, and the driving end thereof can be extended and retracted along the direction of film transmission; One end of the pressure roller is drivingly connected to the driving end of the fourth driving member and can rotate along the tangential direction of the film transmission.

5. The film winding mechanism according to claim 1, characterized in that: The winding member comprises: A rotating shaft, one end of which is connected to a fifth driving member and rotates under the drive of the fifth driving member, the other end of the rotating shaft is penetrated by a flip disk, the outer side of the flip disk is provided with a pneumatic clamping mechanism, the rotating shaft is mounted on the pneumatic clamping mechanism, and can rotate relative to the pneumatic clamping mechanism; The pneumatic shaft is connected to the rotating shaft by a pneumatic clamping mechanism. When the pneumatic clamping mechanism disconnects the pneumatic shaft from the rotating shaft, the pneumatic shaft can be unloaded by the unloading device. The paper tube is sleeved on the inflatable shaft. The inflatable shaft is provided with a plurality of airbags and key positions. The airbags are connected to the inflation port of the inflatable shaft. When the inflation port inflates the airbags, the airbags lift the key positions and fix them to the paper tube. The paper tube is used for winding the substrate.

6. The film winding mechanism according to claim 5, characterized in that: The pneumatic clamping mechanism includes: a clamping cylinder fixed on a frame, the clamping cylinder is arranged adjacent to the rotating shaft, a sleeve is arranged between the rotating shaft and the inflatable shaft, the sleeve and the clamping cylinder are connected to each other through a pipeline, and when the cylinder inflates the sleeve, the inflatable shaft is fixedly connected to the rotating shaft.

7. The film winding mechanism according to claim 1, characterized in that: The transition piece comprises: three rotating rollers distributed in a triangle, the rollers are mounted on a turning plate, and gaps are preset between adjacent rollers.

8. The film winding mechanism according to claim 1, characterized in that: The unloading device comprises: a sixth driving member, one end of which is hinged to the frame; A discharge swing arm is hinged on the frame and is hinged to the other end of the sixth driving member, and the sixth driving member can drive the discharge swing arm to swing relative to the frame; The seventh driving member is fixed on the unloading swing arm, and the driving end of the seventh driving member is fixedly connected to the shaft holding arm. The seventh driving member can drive the shaft holding arm to lift the winding member.

9. The film winding mechanism according to claim 1, characterized in that: The flip plate comprises: A first rotating disk, a rotating shaft is fixedly connected at the center thereof, the rotating shaft is drivingly connected to a sixth driving member, and the sixth driving member can output a driving force to rotate the first rotating disk; The second rotating disk is coaxially arranged with the first rotating disk, and the winding member and the transition member are arranged between the first rotating disk and the second rotating disk.

10. The film winding mechanism according to claim 1, characterized in that: The frame comprises: wall panels arranged opposite to each other, the wall panels are provided with coaxially arranged rotation accommodating grooves, a slewing support is sleeved in the rotation accommodating groove, and the slewing support is rotatably connected to the overturning plate.

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