Precise cutting and winding equipment for optical film

Abstract

The utility model relates to the technical field of optical film processing, in particular to optical film precise cutting and winding equipment which comprises a cutting module and a winding module. The cutting module achieves accurate cutting through cooperation of a cutting assembly and a positioning assembly, the winding module guarantees continuous and uniform winding through a winding shaft and a tension adjusting assembly, and stable conveying is achieved through a transition guide rail. The cutting assembly drives a tool rest through a lead screw, and the positioning assembly is matched with a complex shape through an adjusting rod. The winding shaft is provided with a spiral groove for guiding winding, and the tension arm and the pinch roller maintain stable tension. By optimizing the structural design, the problems of low cutting precision, poor adaptability and low winding efficiency are solved, and an efficient intelligent solution is provided for optical film processing.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of precision machining and automation equipment, specifically to optical film accurate cutting and winding equipment. BACKGROUND

[0002] In the processing and production of optical film, cutting precision and winding efficiency are one of the important indicators to measure the performance of the equipment. At present, some optical film processing equipment based on mechanical cutting and manual winding has appeared in the market, but these devices often have difficulty in achieving precise control when facing complex shapes or high precision requirements. In addition, the operation process of traditional equipment is relatively complicated, and there are certain limitations in irregular cutting and continuous winding, which limits the production efficiency and adaptability.

[0003] For example: the "OCA slicing device for optical glue processing" disclosed in Chinese invention patent (publication number: CN113752316B), the specification discloses: adopting a cross-cutting slicing mechanism, two shearing knives with opposite inclined directions are used to cut the optical glue. Although this structure can improve the cutting flatness and reduce the precision requirement of the equipment, it is mainly suitable for regular shape cutting tasks, and there are certain deficiencies in cutting precision and adaptability when processing irregular or complex shape optical film. In addition, the device does not involve winding function, and needs additional equipment for subsequent processing, which increases the complexity and cost of production process.

[0004] For example: the "preparation method and die cutting device of OCA optical glue with round hole and light shielding black edge" disclosed in Chinese invention patent (publication number: CN111730681B), the specification discloses: by setting light shielding tape on OCA optical glue and die cutting, the problem of light leakage in under-screen camera area is solved. However, this scheme mainly aims at cutting tasks of specific shape (such as round hole), and has weak adaptability for cutting tasks of other complex shapes. At the same time, the winding function of this device is relatively basic, and it is difficult to realize automatic continuous winding, which limits the production efficiency, especially in large-scale industrial production scene, it is difficult to meet the demand of efficient processing.

[0005] The above problems show that the current optical film cutting and winding equipment on the market has certain limitations in complex shape cutting and high precision requirements. Therefore, the utility model provides an optical film accurate cutting and winding equipment to improve cutting precision, optimize winding efficiency and meet the needs of variable production environment. Utility model content

[0006] The utility model aims to solve the problems of current optical film cutting and winding equipment, including low cutting precision, poor adaptability and low winding efficiency.

[0007] In order to achieve the above-mentioned utility model purposes, improve the above-mentioned problems, the utility model provides a kind of optical film precision cutting and winding equipment, including cutting module and winding module.The cutting module includes cutting assembly and positioning assembly, the cutting assembly is cooperated with positioning assembly by sliding connection mode, to realize the precision cutting of optical film;The winding module includes winding shaft and tension adjusting assembly, the winding shaft is linked with tension adjusting assembly by transmission mechanism, to realize the continuous winding of optical film.The transition guide rail is equipped between the cutting module and winding module, for the smooth conveying of optical film after cutting to winding module.

[0008] The cutting assembly includes tool holder and cutting blade, the bottom of the tool holder is provided with a plurality of mounting holes, the cutting blade is fixed in the mounting hole by bolt, and the cutting blade is towards the positioning assembly.The positioning assembly includes positioning plate and adjusting rod, the upper surface of the positioning plate is provided with a plurality of parallel distributed guide grooves, the adjusting rod penetrates the positioning plate and is vertically arranged with the guide groove, the position of the positioning plate is changed by the movement of the adjusting rod, to adapt to the cutting demand of different shapes.

[0009] As the preferred technical solution of the present application, the two sides of the tool holder are provided with sliding blocks, the sliding blocks are embedded in the side wall track of the positioning assembly, and linear motion is realized by screw drive.The one end of the screw is connected with step motor, the rotating speed and direction of the step motor are set by control system, to control the moving track of tool holder.

[0010] As the preferred technical solution of the present application, the winding shaft includes main shaft and auxiliary shaft, the two ends of the main shaft are fixed on the equipment frame through bearing seat, the auxiliary shaft is sleeved on the outside of the main shaft and is connected through key groove to realize synchronous rotation.The outer circumferential surface of the main shaft is provided with helical groove, the helical groove is used to guide the optical film to be wound evenly along the main shaft.

[0011] As the preferred technical solution of the present application, the tension adjusting assembly includes tension arm and counterweight, one end of the tension arm is hinged on the equipment frame, and the other end is connected with the counterweight.The middle part of the tension arm is provided with a press wheel, the press wheel is in contact with the optical film and applies constant pressure, to maintain the tension stability in winding process.

[0012] As the preferred technical solution of the present application, the transition guide rail includes guide rail body and adjusting gasket, the upper surface of the guide rail body is provided with recess, the recess is used to accommodate optical film and limit its lateral displacement.The adjusting gasket is embedded in the bottom of guide rail body, and is fixed by screw, the height of guide rail is adjusted by replacing adjusting gasket of different thickness, to adapt to optical film of different thickness.

[0013] As a preferred technical scheme of the present application, the transmission mechanism comprises a gear set and a belt, the gear set comprises a driving gear and a driven gear, the driving gear is connected with the output shaft of the stepping motor, the driven gear is connected with the end of the main shaft, and power transmission is realized through the belt.

[0014] As a preferred technical scheme of the present application, the cutting blade is coated with a wear-resistant coating made of tungsten carbide material to improve the service life of the blade. The guide groove of the positioning plate is embedded with a ball, which is in contact with the optical film and reduces the friction, thereby improving the cutting accuracy.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] By setting the cutting assembly and the positioning assembly, the optical film is precisely cut by means of sliding connection and screw drive, which is especially suitable for cutting tasks of complex shapes. By setting the winding shaft and the tension adjusting assembly, the uniformity and stability of the optical film during winding are ensured by the design of the spiral groove and the pressure roller, solving the deficiency of traditional equipment in continuous winding. In addition, the seamless connection between cutting and winding is realized by the introduction of the transition guide, improving the overall production efficiency.

[0017] The present application optimizes the structural design of the cutting module and the winding module, and combines the connection relationship and mounting mode of specific parts, solving the problems of low cutting precision, poor adaptability and low winding efficiency in the prior art, and providing a more intelligent, efficient and adaptable solution for optical film processing. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The present application is a schematic diagram of the overall structure;

[0019] Figure 2 The present application is a partial view of the cutting module;

[0020] Figure 3 The present application is a schematic diagram of the structure of the transition guide;

[0021] Figure 4 The present application is a partial schematic diagram of the winding module.

[0022] The following are the reference signs:

[0023] 1, cutting module; 2, winding module; 3, transition guide rail; 4, cutting assembly; 5, positioning assembly; 6, knife holder; 7, cutting blade; 8, positioning plate; 9, adjusting rod; 10, winding shaft; 11, tension adjusting assembly; 12, main shaft; 13, auxiliary shaft; 14, spiral groove; 15, tension arm; 16, counterweight; 17, pinch roller; 18, guide rail body; 19, adjusting washer; 20, transmission mechanism; 21, wear-resistant coating; 22, ball bearing. DETAILED DESCRIPTION

[0024] The utility model provides a kind of optical film precision cutting and winding equipment, its overall structure as Figure 1 Shown, including cutting module 1, winding module 2 and transition guide rail 3.Cutting module 1 is located at the front end of equipment, for the precision cutting of optical film;Winding module 2 is located at the rear end of equipment, for continuous winding into roll after cutting optical film;Transition guide rail 3 connects cutting module 1 and winding module 2, for the smooth conveying of cutting optical film to winding module 2.The specific structure of each module and its working principle are described in detail below in conjunction with the drawings.

[0025] The core components of cutting module 1 include cutting assembly 4 and positioning assembly 5, as Figure 2 Shown.Cutting assembly 4 is composed of knife holder 6 and cutting blade 7, the bottom end of knife holder 6 is provided with a plurality of mounting holes, cutting blade 7 is fixed in mounting hole by bolt, and the cutting edge of cutting blade 7 faces positioning assembly 5.The cutting edge of cutting blade 7 is coated with wear-resistant coating 21, which is made of tungsten carbide material to improve the service life of blade.The two sides of knife holder 6 are provided with sliding block, sliding block is embedded in the side wall track of positioning assembly 5, and linear motion is realized by screw drive driving.The one end of screw drive is connected with step motor, the rotating speed and direction of step motor are set by control system to control the moving track of knife holder 6.Positioning assembly 5 includes positioning plate 8 and adjusting rod 9, the upper surface of positioning plate 8 is provided with a plurality of parallel distributed guide grooves, ball bearing 22 is embedded in guide groove, ball bearing 22 contacts with optical film and reduces friction force, so as to improve cutting accuracy.Adjusting rod 9 penetrates positioning plate 8 and is vertically arranged with guide groove, the position of positioning plate 8 is changed by the movement of adjusting rod 9, so as to adapt to the cutting demand of different shapes.When optical film needs to be cut, optical film is placed on positioning plate 8, the position of positioning plate 8 is adjusted by adjusting rod 9 to determine cutting area, then step motor is started to drive knife holder 6 to move along screw drive, so that cutting blade 7 cuts optical film according to predetermined track.

[0026] The core components of winding module 2 include winding shaft 10 and tension adjusting assembly 11, as Figure 3The winding shaft 10 is composed of a main shaft 12 and a secondary shaft 13. The two ends of the main shaft 12 are fixed to the equipment frame through a bearing seat, and the secondary shaft 13 is sleeved outside the main shaft 12 and connected through a key groove to realize synchronous rotation. A spiral groove 14 is arranged on the outer circumferential surface of the main shaft 12, which is used to guide the optical film to be uniformly wound along the main shaft 12. The tension adjusting assembly 11 includes a tension arm 15 and a counterweight 16. One end of the tension arm 15 is hinged to the equipment frame, and the other end is connected with the counterweight 16. A press roller 17 is arranged in the middle of the tension arm 15, which is in contact with the optical film and applies a constant pressure to maintain the stability of the tension during winding. The power of the winding shaft 10 is derived from the transmission mechanism 20, which includes a gear set and a belt. The gear set is composed of a driving gear and a driven gear. The driving gear is connected with the output shaft of the stepping motor, and the driven gear is connected with the end of the main shaft 12. The power transmission is realized through the belt. The tension of the belt is adjusted by a tensioning roller, which is installed in a sliding groove on the equipment frame and fixed in position by a locking nut. When the cut optical film is transported to the winding module 2 through the transition guide rail 3, the stepping motor drives the transmission mechanism 20 to operate, driving the winding shaft 10 to rotate, while the tension adjusting assembly 11 applies a constant pressure to the optical film through the press roller 17, ensuring the uniformity and stability of the optical film during winding.

[0027] The structure of the transition guide rail 3 is shown in Figure 4 , which includes a guide rail body 18 and an adjusting gasket 19. The upper surface of the guide rail body 18 is provided with a groove for accommodating the optical film and limiting its lateral displacement. The adjusting gasket 19 is embedded in the bottom of the guide rail body 18 and fixed by screws. By replacing adjusting gaskets 19 of different thicknesses, the height of the guide rail can be adjusted to adapt to optical films of different thicknesses. When the cutting module 1 completes the cutting, the optical film is smoothly transported along the groove of the transition guide rail 3 to the winding module 2, ensuring seamless connection between cutting and winding.

[0028] The details of the cutting blade 7 are shown in Figure 2 . The cutting edge is coated with a wear-resistant coating 21, which is located on the outer surface of the cutting blade 7 and is in opposite relationship with the ball 22 of the positioning plate 8. During the cutting process, the ball 22 is in contact with the optical film and reduces the friction, while the cutting edge of the cutting blade 7 precisely cuts the optical film. This design not only improves the cutting accuracy, but also prolongs the service life of the cutting blade 7.

[0029] In practical applications, the operator first adjusts the position of the positioning plate 8 according to the shape and size of the optical film to be cut, changes the layout of the guide groove of the positioning plate 8 through the adjusting rod 9, and adapts it to the cutting demand. Then, the optical film is placed on the positioning plate 8, and the step motor is started to move the knife holder 6 along the screw, driving the cutting blade 7 to cut the optical film. After cutting is completed, the optical film is smoothly conveyed to the winding module 2 through the groove of the transition guide rail 3, the step motor drives the transmission mechanism 20 to operate, driving the winding shaft 10 to rotate, and the tension adjusting assembly 11 applies constant pressure to the optical film through the pressure roller 17, ensuring that the optical film remains uniform and stable during winding. Through the above steps, the utility model realizes precise cutting and efficient winding of the optical film, solving the problems of low cutting precision, poor adaptability and low winding efficiency in the prior art.

[0030] In order to better enable relevant persons in the art to fully understand and implement the present utility model, the specific implementation principles of the present utility model are supplemented by combining a specific application scenario.

[0031] Firstly, in the cutting module 1, the operator needs to adjust the position of the positioning assembly 5 according to the shape and size of the optical film to be cut. By manually rotating the adjusting rod 9, the layout of the guide groove on the positioning plate 8 is changed to adapt to the specific cutting demand. At this time, the ball 22 is embedded in the guide groove and in contact with the optical film, reducing the friction to ensure the cutting precision. Then, the optical film is placed on the positioning plate 8, and the control system is started to set the speed and direction of the step motor. The step motor drives the knife holder 6 to move linearly along the side wall track of the positioning assembly 5 through the screw, and the cutting blade 7 cuts the optical film according to the predetermined trajectory. In this process, the cutting blade 7 is coated with a wear-resistant coating 21 made of tungsten carbide material, which can effectively prolong the service life of the blade, and its sharpness ensures the flatness of the cutting edge. Due to the design that the sliding blocks on both sides of the knife holder 6 are embedded in the track, the motion trajectory of the knife holder 6 is stable and accurate, thereby meeting the demand for cutting complex shapes or high-precision cutting tasks.

[0032] After cutting is completed, the optical film is smoothly conveyed to the winding module 2 through the transition guide rail 3. The guide rail main body 18 of the transition guide rail 3 is provided with a groove for accommodating the optical film and limiting its lateral displacement, ensuring that the optical film remains stable during conveying. In addition, the adjusting gasket 19 is embedded at the bottom of the guide rail main body 18, and the guide rail height can be adjusted by replacing adjusting gaskets 19 of different thicknesses to adapt to optical films of different thicknesses. This design enables the device to flexibly cope with the processing needs of optical films of various specifications, avoiding the problem of poor conveying caused by thickness differences.

[0033] After entering the winding module 2, the transmission mechanism 20 starts to work. The stepper motor drives the driving gear to rotate, and the power is transmitted to the driven gear through the belt, so as to drive the main shaft 12 to rotate. The outer circumferential surface of the main shaft 12 is provided with a spiral groove 14, and the design of the spiral groove 14 can guide the optical film to be uniformly wound along the main shaft 12, so as to avoid deviation or wrinkle in the winding process. At the same time, the tension adjusting assembly 11 applies constant pressure to the optical film through the pressure roller 17. Specifically, one end of the tension arm 15 is hinged to the equipment frame, the other end is connected with the counterweight 16, and the pressure roller 17 arranged in the middle of the tension arm 15 is in contact with the optical film. The stable tension in the winding process is maintained through the gravity action of the counterweight 16. This design not only improves the winding efficiency, but also ensures the uniformity and stability of the optical film in the winding process.

[0034] During the whole operation process, the cooperation between the modules is the key to realize efficient production. For example, the cooperation design of the adjusting rod 9 of the positioning assembly 5 in the cutting module 1 and the guide groove enables the equipment to quickly adapt to different cutting tasks of different shapes; the groove and the adjusting gasket 19 of the transition guide rail 3 ensure that the cut optical film can be smoothly conveyed to the winding module 2; and the spiral groove 14 and the tension adjusting assembly 11 in the winding module 2 further optimize the winding quality and solve the deficiency of the traditional equipment in continuous winding.

[0035] Through the above steps, the present application realizes the precise cutting and efficient winding of the optical film. The cooperation of the sliding block, screw rod and stepper motor in the cutting module 1 improves the cutting precision and adaptability; the design of the spiral groove 14 and the tension adjusting assembly 11 in the winding module 2 ensures the uniformity and stability of the winding process; and the transition guide rail 3 realizes the seamless connection between cutting and winding. These designs solve the problems of low cutting precision, poor adaptability and low winding efficiency in the prior art, and provide a more intelligent, efficient and adaptable solution for optical film processing.

[0036] The contents not described in detail in the specification all belong to the prior art known by those skilled in the art, and the model parameters of each electric appliance are not specifically limited, and conventional equipment can be used. In the technical solution, the electric appliance control elements not mentioned belong to the prior art, so they are not shown in the drawings, and will not be described here.

[0037] The above only describes the preferred embodiment of the present application, and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A precision cutting and winding device for optical film, characterized in that, The utility model provides cutting module (1) and winding module (2) including, cutting module (1) includes cutting assembly (4) and positioning assembly (5), cutting assembly (4) is used with positioning assembly (5) through the mode of sliding connection, winding module (2) includes winding shaft (10) and tension adjusting assembly (11), winding shaft (10) is linked with tension adjusting assembly (11) through transmission mechanism (20), cutting module (1) and winding module (2) between be equipped with transition guide rail (3), for cutting optical film is smoothly transported to winding module (2) after.

2. The optical film precision slitting and winding apparatus according to claim 1, wherein The cutting assembly (4) includes a knife holder (6) and a cutting blade (7), the bottom end of the knife holder (6) is provided with a plurality of mounting holes, the cutting blade (7) is fixed in the mounting hole by bolts, and the cutting blade (7) is provided with a cutting edge, the positioning assembly (5) includes a positioning plate (8) and an adjusting rod (9), the upper surface of the positioning plate (8) is provided with a plurality of parallel guide grooves, and the adjusting rod (9) penetrates through the positioning plate (8) and is perpendicular to the guide grooves.

3. The optical film precision slitting and winding apparatus according to claim 2, wherein The two sides of the knife holder (6) are provided with sliding blocks, the sliding blocks are embedded in the side wall tracks of the positioning assembly (5), and the sliding blocks are driven to realize linear motion by the lead screws, one end of the lead screw is connected with a stepping motor, and the rotating speed and direction of the stepping motor are set by a control system.

4. The optical film precision slitting and winding apparatus according to claim 1, wherein The winding shaft (10) includes a main shaft (12) and a secondary shaft (13), the two ends of the main shaft (12) are fixed on the equipment frame through bearing seats, the secondary shaft (13) is sleeved outside the main shaft (12) and is connected to realize synchronous rotation through a key groove, and the outer circumferential surface of the main shaft (12) is provided with a spiral groove (14).

5. The optical film precision slitting and winding apparatus according to claim 1, wherein The tension adjusting assembly (11) includes a tension arm (15) and a counterweight (16), one end of the tension arm (15) is hinged to the equipment frame, the other end is connected with the counterweight (16), the middle part of the tension arm (15) is provided with a pressure roller (17), and the pressure roller (17) is in contact with the optical film.

6. The optical film precision slitting and winding apparatus according to claim 1, wherein The transition guide rail (3) includes a guide rail body (18) and an adjusting gasket (19), the upper surface of the guide rail body (18) is provided with a groove, the groove is used for accommodating the optical film and limiting the transverse displacement of the optical film, and the adjusting gasket (19) is embedded in the bottom of the guide rail body (18) and is fixed by screws.

7. The optical film precision slitting and winding apparatus according to claim 2, wherein The cutting edge of the cutting blade (7) is coated with a wear-resistant coating (21) made of tungsten carbide material, and the guide groove of the positioning plate (8) is embedded with a ball (22).

8. The optical film precision slitting and winding apparatus according to claim 1, wherein The transmission mechanism (20) includes a gear set and a belt, the gear set includes a driving gear and a driven gear, the driving gear is connected with the output shaft of the stepping motor, the driven gear is connected with the end of the main shaft (12), the tension of the belt is adjusted by a tensioning wheel, the tensioning wheel is installed in a sliding groove on the equipment frame and is fixed in position by a locking nut.

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