Optical film cutting device

Abstract

The invention relates to the technical field of optical film processing, in particular to an optical film cutting device which comprises a rack, a feeding frame arranged at the front end of the rack, a film roll mounted on the feeding frame, a conveying belt arranged on the rack and used for conveying films, and a cutter arranged on the rack and used for cutting the films on the conveying belt. The bottom of the rack is fixedly connected with a bottom plate, the discharging frame is connected to the bottom plate in a sliding mode in the width direction of the conveying belt, the bottom plate is provided with an adjusting piece for adjusting the sliding position of the discharging frame, and the rack is provided with a sensor for detecting the position of a diaphragm. The diaphragm has the effect of reducing the possibility of abrasion of the side wall of the diaphragm.

Description

Technical Field

[0001] This application relates to the technical field of optical film processing, and particularly to an optical film cutting device. Background Art

[0002] Optical films are important optical components, which are made of thin layered media and are a type of optical dielectric material that propagates light beams through interfaces. They are widely used in various optical systems. Their main function is to change or control the characteristics of light propagation, reflection, refraction, scattering, polarization, etc. to meet the requirements of specific applications.

[0003] In the prior art, a roll of film material is cut into individual sheets by a cutting device. The cutting device includes a frame, a feeding rack arranged at the front end of the frame, a conveyor belt arranged on the frame for conveying the film, and a cutting knife arranged on the frame for cutting the film on the conveyor belt. In the prior art, during the conveying of the film by the conveyor belt, there will be a deviation between the film and the cutting knife. Usually, a deviation correction plate for correcting the film is arranged on the frame. However, the feeding rack is relatively fixed to the frame, resulting in significant wear when the side wall of the film abuts against the deviation correction plate on the frame. Therefore, further improvement is needed. Summary of the Invention

[0004] In order to reduce the possibility of wear on the side wall of the film, this application provides an optical film cutting device.

[0005] An optical film cutting device provided by this application adopts the following technical solution: An optical film cutting device includes a frame, a feeding rack arranged at the front end of the frame, a film reel installed on the feeding rack, a conveyor belt arranged on the frame for conveying the film, and a cutting knife arranged on the frame for cutting the film on the conveyor belt. A bottom plate is fixedly connected to the bottom of the frame. The feeding rack is slidably connected to the bottom plate along the width direction of the conveyor belt. The bottom plate is provided with an adjusting member for adjusting the sliding position of the feeding rack, and the frame is provided with a sensor for detecting the position of the film.

[0006] By adopting the above technical solution, the sensor detects the position of the optical film. If it is found that the position of the optical film is deviated, the sensor transmits an electrical signal, and the adjusting member drives the feeding rack to slide and adjust, so that the film always maintains an accurate centering state during the conveying process, thereby effectively reducing the friction between the side wall of the film and the deviation correction plate caused by the position deviation and reducing the risk of film wear.

[0007] Preferably, the material feeding rack includes a material feeding base plate slidably connected to the bottom plate, a pair of material feeding side brackets fixedly connected to the upper end faces on both sides of the material feeding base plate, a cross bar arranged between the upper parts of the two material feeding side brackets, and a pair of material feeding clamping plates slidably connected to the cross bar along the axial direction of the cross bar. The axial direction of the cross bar is parallel to the width direction of the conveyor belt. The diaphragm material roll is located between the two material feeding clamping plates. An insertion core shaft rotatably connected to the inner wall of one end of the material feeding clamping plate away from the cross bar and coaxially inserted into the central cylinder hole of the diaphragm material roll is provided. The material feeding clamping plate is provided with a material feeding motor for driving the insertion core shaft to rotate so as to drive the diaphragm material roll to unwind. The cross bar is provided with a clamping and releasing driving member for driving the material feeding clamping plate to slide. A horizontal guide rail is fixedly connected to the upper end face of the bottom plate, and the length direction of the horizontal guide rail is parallel to the width direction of the conveyor belt. A slider slidably connected to the horizontal guide rail is fixedly connected to the lower end face of the material feeding base plate.

[0008] By adopting the above technical solution, the material feeding clamping plate can slide along the axial direction of the cross bar, and the clamping or releasing of the diaphragm material roll is realized through the clamping and releasing driving member, which is convenient for the installation and replacement of the diaphragm material roll. The insertion core shaft is inserted into the central cylinder hole of the diaphragm material roll and driven to rotate by the material feeding motor, so as to realize stable and efficient unwinding operation.

[0009] Preferably, a movable plate is hinged to the inner side of the upper part of the material feeding side bracket. The cross bar is fixedly connected between the two movable plates. A guide rod is fixedly connected between the two movable plates, and the axial direction of the guide rod is parallel to the axial direction of the cross bar. The material feeding clamping plate is slidably sleeved on the guide rod. The material feeding base plate is provided with a swing angle driving member for adjusting the swing angle of the free end of the movable plate.

[0010] By adopting the above technical solution, the hinged design of the movable plate and the material feeding side bracket can realize flexible adjustment of the angle of the cross bar and the material feeding clamping plate relative to the material feeding side bracket. When the movable plate swings to a state where the free end of the material feeding clamping plate is inclined downward, the insertion core shaft descends to a low position accordingly. This structure enables the operator to conveniently and quickly replace the diaphragm material roll without the need to use additional lifting equipment to lift the diaphragm material roll. When the movable plate swings to a state where the free end of the material feeding clamping plate is inclined upward, the insertion core shaft rises to a high position, thereby ensuring the stability of the diaphragm material roll during the unwinding process and effectively improving the operation convenience and overall working efficiency of the equipment.

[0011] Preferably, a fixing plate is fixedly connected to the middle of the cross bar. The clamping and releasing driving member is a clamping and releasing cylinder. The cylinder body of the clamping and releasing cylinder is fixedly connected to the fixing plate, the axial direction of the piston rod of the clamping and releasing cylinder is parallel to the axial direction of the cross bar, and the piston rod of the clamping and releasing cylinder is fixedly connected to the material feeding clamping plate.

[0012] By adopting the above technical solution, the setting of the fixed plate provides a stable installation foundation for the clamping and releasing cylinder, ensuring the reliability of the cylinder operation. The fixed connection between the piston rod of the clamping and releasing cylinder and the material releasing clamping plate makes the operation of clamping or releasing the diaphragm material roll more convenient and efficient, effectively improving the adaptability of the material releasing rack to diaphragm material rolls of different sizes.

[0013] Preferably, the clamping and releasing driving member includes a clamping and releasing lead screw rotatably connected to the material releasing side bracket and a clamping and releasing motor for driving the rotation of the clamping and releasing lead screw. The clamping and releasing lead screw has a first thread section and a second thread section, and the thread directions of the first thread section and the second thread section are opposite. The two material releasing clamping plates are respectively sleeved on the first thread section and the second thread section of the clamping and releasing lead screw in a threaded manner.

[0014] By adopting the above technical solution, since the thread directions of the first thread section and the second thread section are opposite, when the clamping and releasing lead screw rotates, the two material releasing clamping plates will move closer to each other or separate from each other at the same speed, ensuring that the clamping or releasing action of the diaphragm material roll is more stable and reliable.

[0015] Preferably, the core inserting shaft is coaxially and fixedly connected with a rotating shaft rotatably penetrating through the material releasing clamping plate. An air sleeve coaxially sleeved on the rotating shaft is fixedly connected to the inner side wall of the material releasing clamping plate. The air sleeve and the rotating shaft rotate relative to each other, and the inner peripheral wall of the air sleeve is hermetically connected to the outer peripheral wall of the rotating shaft. An air cavity is circumferentially formed on the inner peripheral wall of the air sleeve. The rotating shaft has an air passage extending into the core inserting shaft. A first air hole communicating the air passage and the air cavity is formed on the outer peripheral wall of the rotating shaft. A tightening ring groove is circumferentially formed on the outer peripheral wall of the core inserting shaft. A tightening bladder embedded in the tightening ring groove is arranged on the core inserting shaft. The tightening bladder has elasticity. A second air hole communicating with the air passage is radially formed on the inner wall of the tightening ring groove. A conduit inserted into the second air hole is convexly fixed on the inner wall of the tightening bladder. The conduit communicates between the inner cavity of the tightening bladder and the air passage. An air control assembly for controlling the expansion or contraction of the tightening bladder is arranged between the movable plate and the material releasing side bracket.

[0016] Preferably, the air control assembly includes a connecting plate fixedly connected to the upper part of the material releasing side bracket, an air control box fixedly connected to the connecting plate and located above the movable plate, a sliding plate hermetically slidingly connected to the inner wall of the air control box along the diaphragm conveying direction, a linkage rod fixedly connected to the side of the sliding plate away from the conveyor belt, and a hinged rod with one end hinged to the end of the linkage rod away from the conveyor belt and the other end hinged to the movable plate. An air control cavity is formed between the inner wall of the sliding plate close to the conveyor belt and the inner wall of the air control box. The end face of the air control box away from the conveyor belt is open. An air pipe fixedly penetrating through the end face of the air control box close to the conveyor belt and communicating the air control cavity and the air cavity is provided. The air pipe is a flexible pipe.

[0017] By adopting the above technical solution, when the movable plate swings, the articulated rod drives the linkage rod to move, so that the sliding plate slides in the air control box, changing the volume of the air control cavity. When the movable plate swings to a state where the free end of the feeding clamping plate is inclined downward, the core inserting shaft descends to a low position. At this time, the articulated rod pulls the sliding plate to slide away from the conveyor belt through the linkage rod, making the volume of the air control cavity increase. The gas in the inflation bladder flows back to the air control cavity, and the inflation bladder contracts, retracting into the inflation ring groove, which facilitates the loading and unloading of the diaphragm coil. After the new diaphragm coil is loaded, when the movable plate swings to a state where the free end of the feeding clamping plate is inclined upward, the core inserting shaft rises to a high position. The articulated rod pushes the sliding plate to slide towards the conveyor belt through the linkage rod, and the gas enters the air cavity through the air pipe, causing the inflation bladder to expand. The outer peripheral wall of the inflation bladder abuts against the inner peripheral wall of the central hole of the diaphragm coil, thereby increasing the friction force between the core inserting shaft and the central hole of the diaphragm coil, effectively reducing the relative rotation and slipping phenomenon between the diaphragm coil and the core inserting shaft, and ensuring the stable unwinding of the diaphragm coil.

[0018] Preferably, the frame is provided with a fixed rod located at the front end of the conveyor belt and below the diaphragm. The length direction of the fixed rod is parallel to the width direction of the conveyor belt. The fixed rod is provided with a mounting seat for installing a sensor. There are two mounting seats distributed along the length direction of the fixed rod. The mounting seat includes a vertical block mounted on the fixed rod and outside the diaphragm, an upper block fixedly connected to the side wall of the vertical block and above the diaphragm, and a lower block fixedly connected to the vertical block and below the diaphragm. A detection groove is formed between the upper block and the lower block. The sensor is a transmissive photoelectric sensor. The photoelectric sensor at the emitting end is fixedly inserted through the lower block, and the photoelectric sensor at the receiving end is fixedly inserted through the upper block.

[0019] By adopting the above technical solution, the photoelectric sensor uses a light source to emit a light beam to detect the position of the diaphragm. When the diaphragm is in the correct position, the photoelectric sensor at the receiving end can stably receive the reflected light or transmitted light of a predetermined intensity; when the diaphragm is offset, it will change the light flux received by the photosensitive element of the photoelectric sensor at the receiving end, thereby causing a change in light intensity. This change in light intensity will trigger the photoelectric sensor at the receiving end to output a corresponding electrical signal, thereby realizing the precise monitoring of the diaphragm position and effectively reducing the wear risk between the side wall of the diaphragm and the deviation correction plate.

[0020] Preferably, the frame is provided with a tension frame located between the unwinding rack and the conveyor belt. The tension frame is provided with guide rollers for guiding the diaphragm. There are two guide rollers distributed along the length direction of the frame. The tension frame is vertically slidably connected with a tension floating roller located between the two guide rollers. The tension floating roller is located below the guide rollers. The guide rollers abut against the lower end surface of the diaphragm, and the tension floating roller abuts against the upper end surface of the diaphragm.

[0021] Preferably, the lens of the photoelectric sensor extends into the detection groove. The vertical block has a blowing cavity. A blowing hole is formed in the side wall of the vertical block close to the diaphragm and communicates with the blowing cavity to blow the surface of the lens of the photoelectric sensor. An air supply assembly is arranged between the tension floating roller and the vertical block. The air supply assembly includes an air supply box fixedly connected to the outer wall of the tension frame, a partition plate vertically and sealingly slidingly connected to the inner wall of the air supply box to divide the inner cavity of the air supply box into a first chamber and a second chamber, a sliding rod fixedly connected to the partition plate and sealingly sliding through the upper end surface of the air supply box, and a connecting arm fixedly connected between the sliding rod and the end of the tension floating roller. The air supply box is provided with a first one-way intake pipe, a first one-way outlet pipe communicating with the first chamber, a second one-way intake pipe, and a second one-way outlet pipe communicating with the second chamber. The first one-way outlet pipe and the second one-way outlet pipe communicate with the blowing cavity of the vertical block. One-way valves are arranged on the first one-way intake pipe, the first one-way outlet pipe, the second one-way intake pipe, and the second one-way outlet pipe.

[0022] By adopting the above technical solutions, the blowing cavity and the blowing hole structure are provided, and the air flow generated by the air supply assembly is used to continuously blow the surface of the lens. On the one hand, it ensures the cleanliness of the lens surface and prevents the detection accuracy of the photoelectric sensor lens from being affected by the accumulation of dust or impurities. On the other hand, it facilitates the heat dissipation of the photoelectric sensor. The air supply assembly realizes automatic air supply based on the reciprocating movement of the tension floating roller and through the cooperation of the first chamber and the second chamber.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. The sensor detects the position of the optical diaphragm. If it is found that the position of the optical diaphragm is deviated, the sensor transmits an electrical signal, and the adjusting member drives the unwinding rack to slide and adjust, so that the diaphragm always maintains an accurate centering state during the conveying process, thereby effectively reducing the friction between the side wall of the diaphragm and the deviation correction plate caused by the position deviation and reducing the risk of diaphragm wear; 2. The hinged design of the movable plate and the unwinding side bracket enables the cross bar and the unwinding clamping plate to be flexibly adjusted in angle relative to the unwinding side bracket. When the movable plate swings to a state where the free end of the unwinding clamping plate is inclined downward, the core insertion shaft descends to a low position. This structure enables the operator to conveniently and quickly replace the diaphragm coil without the need to use additional lifting equipment to lift the diaphragm coil. When the movable plate swings to a state where the free end of the unwinding clamping plate is inclined upward, the core insertion shaft rises to a high position, thus ensuring the stability of the diaphragm coil during unwinding; 3. Set up the air - blowing cavity and the air - blowing hole structure, and use the air flow generated by the air - supply component to continuously blow the lens surface. On the one hand, ensure the cleanliness of the lens surface and prevent the detection accuracy from being affected due to the accumulation of dust or impurities on the surface of the photoelectric sensor lens. On the other hand, facilitate the heat dissipation of the photoelectric sensor. The air - supply component realizes automatic air supply based on the reciprocating movement of the tension floating roller and through the coordinated action of the first chamber and the second chamber. Brief Description of the Drawings

[0024] Figure 1 is the overall structural schematic diagram of an optical film cutting device in Embodiment 1.

[0025] Figure 2 is the structural schematic diagram of the unwinding rack and the tension rack in Embodiment 1.

[0026] Figure 3 is the connection structural schematic diagram of the mounting seat and the photoelectric sensor in Embodiment 1.

[0027] Figure 4 is the structural schematic diagram of the cutting rack in Embodiment 1.

[0028] Figure 5 is the structural schematic diagram of the loose - clamping driving part in Embodiment 2.

[0029] Figure 6 is the structural schematic diagram of the unwinding rack in Embodiment 3.

[0030] Figure 7 is the structural schematic diagram of the unwinding clamping plate and the core - inserting shaft in Embodiment 3.

[0031] Figure 8 is the structural schematic diagram of the pneumatic control component in Embodiment 3.

[0032] Figure 9 is the structural schematic diagram of the air - supply component in Embodiment 4.

[0033] Figure 10 is the structural schematic diagram of the mounting seat in Embodiment 4.

[0034] Description of reference numerals: 1, frame; 11, bottom plate; 12, horizontal guide rail; 13, rodless cylinder; 14, conveying motor; 2, unwinding rack; 21, unwinding base plate; 211, swing angle cylinder; 22, unwinding side bracket; 23, cross bar; 231, fixing plate; 24, unwinding clamping plate; 241, unwinding motor; 242, air sleeve; 243, air cavity; 25, movable plate; 251, hinge shaft; 26, clamping release driving member; 261, clamping release lead screw; 262, clamping release motor; 27, ferrule shaft; 271, limiting plate; 272, rotating shaft; 273, expansion ring groove; 274, second air hole; 275, air passage; 276, first air hole; 28, expansion bladder; 281, conduit; 3, conveyor belt; 4, film roll; 5, tensioning rack; 51, guide roller; 511, limiting ring plate; 52, tension floating roller; 521, counterweight sliding seat; 53, vertical guide rail; 54, fixed rod; 55, mounting seat; 551, vertical block; 552, upper block; 553, lower block; 554, sliding sleeve; 555, blowing cavity; 556, blowing hole; 557, main pipe; 56, photoelectric sensor; 6, cutting rack; 61, cutting hydraulic cylinder; 62, cutting seat; 63, pressing plate; 64, spring; 65, knife groove; 7, pneumatic control assembly; 71, connecting plate; 72, pneumatic control box; 73, sliding plate; 74, linkage rod; 75, hinge rod; 76, air delivery pipe; 8, air supply assembly; 81, air supply box; 811, first chamber; 812, second chamber; 813, first one-way air inlet pipe; 814, first one-way air outlet pipe; 815, second one-way air inlet pipe; 816, second one-way air outlet pipe; 82, partition plate; 83, sliding rod; 84, connecting arm. Detailed implementation manners

[0035] The following further elaborates on this application Figure 1-10 in conjunction with the appended drawings.

[0036] Embodiment 1: The embodiment of this application discloses an optical film cutting device. Referring to Figure 1 , it includes a frame 1, an unwinding rack 2 provided at the front end of the frame 1, a film roll 4 installed on the unwinding rack 2, a conveyor belt 3 provided on the frame 1 for conveying the film, and a cutter provided on the frame 1 for cutting the film on the conveyor belt 3. The conveying direction of the conveyor belt 3 is parallel to the length direction of the frame 1, the width direction of the conveyor belt 3 is parallel to the width direction of the frame 1, and the axial direction of the film roll 4 is parallel to the width direction of the frame 1.

[0037] Referring to Figure 1 , Figure 2, a bottom plate 11 is fixedly connected to the bottom of the frame 1. The material feeding rack 2 includes a material feeding base plate 21 slidably connected to the upper end surface of the bottom plate 11 along the width direction of the frame 1, a pair of material feeding side brackets 22 fixedly connected to the upper end surfaces on both sides of the material feeding base plate 21, a cross bar 23 arranged between the upper parts of the two material feeding side brackets 22, and a pair of material feeding clamping plates 24 slidably sleeved on the cross bar 23 along the axial direction of the cross bar 23. The two material feeding side brackets 22 are arranged along the width direction of the frame 1, and the axial direction of the cross bar 23 is parallel to the width direction of the frame 1. A horizontal guide rail 12 is fixedly connected to the upper end surface of the bottom plate 11, the length direction of the horizontal guide rail 12 is parallel to the width direction of the frame 1, and a slider slidably connected to the horizontal guide rail 12 is fixedly connected to the lower end surface of the material feeding base plate 21. The bottom plate 11 is provided with an adjusting member for adjusting the sliding position of the material feeding rack 2. In this embodiment, the adjusting member is a rodless cylinder 13, the rodless cylinder 13 is fixedly connected to the upper end surface of the bottom plate 11, and the lower end surface of the material feeding base plate 21 is fixedly connected to the sliding block of the rodless cylinder 13. In other embodiments, the adjusting member can adopt a lead screw drive to drive the material feeding base plate 21 to slide.

[0038] An activity plate 25 is hinged to the inner side of the upper part of the material feeding side bracket 22 through a hinge shaft 251. The cross bar 23 is fixedly connected between the two activity plates 25. The hinge shaft 251 and the cross bar 23 are coaxially arranged. The material feeding base plate 21 is provided with a swing angle driving member for adjusting the swing angle of the free end of the activity plate 25. Specifically, the swing angle driving member is a swing angle cylinder 211. The cylinder body of the swing angle cylinder 211 is hinged to the upper end surface of the front side of the material feeding base plate 21, and the piston rod of the swing angle cylinder 211 is hinged to the outer side wall of the free end of the activity plate 25. The free end of the activity plate 25 swings by the telescopic movement of the piston rod of the swing angle cylinder 211. A guide rod is fixedly connected between the free ends of the two activity plates 25. The axial direction of the guide rod is parallel to the axial direction of the cross bar 23. The material feeding clamping plate 24 is slidably sleeved on the guide rod. When the activity plate 25 swings to a state where the free end of the material feeding clamping plate 24 is inclined downward, the core insertion shaft 27 drops to a low position, so that the operator can conveniently and quickly replace the diaphragm coil 4; when the activity plate 25 swings to a state where the free end of the material feeding clamping plate 24 is inclined upward, the core insertion shaft 27 rises to a high position for material feeding operation.

[0039] The cross bar 23 is provided with a clamp releasing driving member 26 for driving the feeding clamping plates 24 to slide. In this embodiment, a fixing plate 231 is fixedly sleeved on the middle of the cross bar 23, the guide rod is fixedly penetrated through the fixing plate 231, and there are two corresponding fixing plates 231. The clamp releasing driving member 26 is a clamp releasing cylinder, the cylinder body of the clamp releasing cylinder is fixedly connected to the fixing plate 231, the axial direction of the piston rod of the clamp releasing cylinder is parallel to the axial direction of the cross bar 23, the piston rod of the clamp releasing cylinder is fixedly connected to the feeding clamping plates 24, and the feeding clamping plates are slid by the telescopic movement of the piston rod of the clamp releasing cylinder. The diaphragm coil 4 is located between the two feeding clamping plates 24. Plug shafts 27 coaxially inserted into the central cylindrical holes of the diaphragm coil 4 are rotatably connected to the side walls of the free ends of the two feeding clamping plates 24 close to each other. Limit plates 271 are coaxially fixedly sleeved on the ends of the two plug shafts 27 away from each other, and the limit plates 271 abut against the outer end faces of the diaphragm coil 4. The axial direction of the plug shaft 27 is parallel to the width direction of the frame 1. The plug shaft 27 is coaxially fixedly connected with a rotating shaft 272 penetrating through the feeding clamping plates 24. In this embodiment, the plug shaft 27 and the central cylindrical hole of the diaphragm coil 4 are in interference fit. A feeding motor 241 for driving the diaphragm coil 4 to unwind is fixedly connected to the outer wall of one of the feeding clamping plates 24, and the output shaft of the feeding motor 241 is coaxially fixedly connected to the rotating shaft 272.

[0040] On the upper end face of the bottom plate 11, a tension frame 5 located between the feeding rack 2 and the conveyor belt 3 is fixedly connected. The tension frame 5 is rotatably connected with a guide roller 51 for guiding the diaphragm. The axial direction of the guide roller 51 is parallel to the width direction of the frame 1. There are two guide rollers 51 and they are distributed along the length direction of the frame 1. Two limit ring plates 511 are coaxially fixedly sleeved on each guide roller 51, and there are two limit ring plates 511 and they are distributed along the axial direction of the guide roller 51. The diaphragm is located between the two limit ring plates 511. The tension frame 5 is vertically slidably connected with a tension floating roller 52 located between the two guide rollers 51. The tension floating roller 52 is located below the guide roller 51, and the axial direction of the tension floating roller 52 is parallel to the axial direction of the guide roller 51. In this embodiment, a vertical guide rail 53 is fixedly connected to the side wall of the tension frame 5, and the tension frame 5 is provided with a counterweight sliding seat 521 slidably sleeved on the vertical guide rail 53. The tension floating roller 52 is rotatably connected to the counterweight sliding seat 521. The guide roller 51 abuts against the lower end face of the diaphragm, and the tension floating roller 52 abuts against the upper end face of the diaphragm. The tension floating roller 52 can automatically slide up and down to adjust its position according to the change of the tension of the diaphragm.

[0041] Refer to Figure 2 、 Figure 3, a fixing rod 54 located between the guiding roller 51 and the conveyor belt 3 is fixedly connected to the side wall of the tensioning frame 5 close to the conveyor belt 3. The fixing rod 54 is located below the diaphragm, and the length direction of the fixing rod 54 is parallel to the width direction of the conveyor belt 3. The fixing rod 54 is provided with mounting seats 55 for installing sensors. There are two mounting seats 55 and they are distributed along the length direction of the fixing rod 54. The mounting seat 55 includes a vertical block 551 slidably sleeved on the fixing rod 54 and located outside the diaphragm, an upper block 552 fixedly connected to the side wall of the vertical block 551 and located above the diaphragm, and a lower block 553 fixedly connected to the vertical block 551 and located below the diaphragm. A detection groove is formed between the upper block 552 and the lower block 553. A sliding sleeve 554 slidably sleeved on the fixing rod 54 is fixedly connected to the lower end of the vertical block 551, and the sliding sleeve 554 is locked and fixed to the fixing rod 54 by bolts. The mounting seat 55 is provided with a sensor for detecting the position of the diaphragm. The sensor is an opposed type photoelectric sensor 56. The transmitting end of the photoelectric sensor 56 is installed on the lower block 553, and the receiving end of the photoelectric sensor 56 is installed on the upper block 552. Specifically, through holes for the photoelectric sensor 56 to pass through are vertically formed through the upper block 552 and the lower block 553. The through holes of the upper block 552 and the lower block 553 are coaxial. The photoelectric sensor 56 is inserted into the through hole and locked by a setscrew. The lens of the photoelectric sensor 56 extends into the detection groove.

[0042] Refer to Figure 1 , Figure 4 , there are two groups of conveyor belts 3 and they are distributed along the length direction of the frame 1. There is a cutting gap between the two conveyor belts 3 for the cutter to pass through. The frame 1 is provided with a conveying motor 14 for driving the conveyor belt 3 to transmit. A cutting frame 6 is fixedly connected to the frame 1 above the conveyor belt 3. The cutter is slidably connected to the cutting frame 6 in the vertical direction. The cutting frame 6 is provided with a cutting driving member for driving the cutter to slide. In this embodiment, the cutting driving member is a cutting hydraulic cylinder 61. The cylinder body of the cutting hydraulic cylinder 61 is fixedly connected to the cutting frame 6. The piston rod of the cutting hydraulic cylinder 61 is fixedly connected to a cutting seat 62. The cutter is fixedly connected to the lower end face of the cutting seat 62. A pressing plate 63 for pressing the diaphragm on the conveyor belt 3 is vertically connected below the cutting seat 62. A spring 64 is arranged between the pressing plate 63 and the cutting seat 62. The pressing plate 63 is provided with a knife groove 65 for the cutter to pass through. In the normal state, the cutter retracts into the knife groove 65.

[0043] The implementation principle of the embodiment of this application is as follows: when the diaphragm is in the correct position, the photoelectric sensor 56 at the receiving end can stably receive reflected light or transmitted light of a predetermined intensity; when the diaphragm is displaced, one side edge of the diaphragm will extend into the detection groove, thereby changing the light flux received by the photosensitive element of the photoelectric sensor 56 at the receiving end, and further causing a change in light intensity. The change in light intensity will trigger the photoelectric sensor 56 at the receiving end to output a corresponding electrical signal to the control system, and the control system responds to start the rodless cylinder 13, thereby driving the unwinding rack 2 to slide and adjust, so that the diaphragm always maintains an accurate centering state during the conveying process, thereby effectively reducing the friction between the side wall of the diaphragm and the deviation rectifying plate caused by position deviation and reducing the risk of diaphragm wear.

[0044] When cutting the diaphragm, the conveying motor 14 and the unwinding motor 241 stop. The piston rod of the cutting hydraulic cylinder 61 extends to drive the cutting seat 62 to move downward. When the pressing plate 63 abuts against the diaphragm, the cutting seat 62 continues to move downward, and the pressing plate 63 moves upward relative to the cutting seat 62. At this time, the spring 64 is in a compressed state and has elastic potential energy. The cutting knife moves downward and extends out of the knife groove 65 to cut the diaphragm. Subsequently, the piston rod of the cutting hydraulic cylinder 61 contracts and resets. During the upward movement of the cutting seat 62, the spring 64 forces the pressing plate 63 to reset until the pressing plate 63 is located above the diaphragm. Subsequently, the conveying motor 14 and the unwinding motor 241 are started to perform the cutting operation on the next diaphragm.

[0045] When it is necessary to replace the diaphragm coil 4, the piston rod of the swing angle cylinder 211 contracts, driving the movable plate 25 to swing until the free end of the unwinding clamping plate 24 is in an inclined downward state. The core shaft 27 then descends to a low position. The clamping release cylinder drives the unwinding clamping plate 24 to slide away from each other, and the core shaft 27 is disengaged from the central cylinder hole of the diaphragm coil 4. After removing the central cylinder, the staff moves the diaphragm coil 4 placed on the trolley in advance between the two unwinding clamping plates 24. After aligning the central cylinder of the diaphragm coil 4 with the core shaft 27, the clamping release cylinder drives the unwinding clamping plate 24 to slide closer to each other, so that the core shaft 27 is inserted into the central cylinder hole of the diaphragm coil 4 to complete the loading. The piston rod of the swing angle cylinder 211 resets to drive the movable plate 25 to swing until the free end of the unwinding clamping plate 24 is in an inclined upward state for the unwinding operation.

[0046] Embodiment 2: The difference from Embodiment 1 is that with reference to Figure 5, the clamp release driving member 26 includes a clamp release lead screw 261 rotatably connected to the movable plate 25 and a clamp release motor 262 for driving the rotation of the clamp release lead screw 261. The clamp release lead screw 261 has a first thread section and a second thread section with opposite thread directions. The two blanking clamping plates 24 are respectively threadedly sleeved on the first thread section and the second thread section of the clamp release lead screw 261. The clamp release motor 262 is fixedly connected to the outer wall of the movable plate 25, and the output shaft of the clamp release motor 262 is coaxially and fixedly connected to the end of the clamp release lead screw 261. When the clamp release lead screw 261 rotates, the two blanking clamping plates 24 will move closer to each other or slide outward at the same speed.

[0047] Embodiment 3: The difference from Embodiment 1 is that referring to Figure 6 , Figure 7 , Figure 8 , an air sleeve 242 coaxially sleeved on the rotating shaft 272 is fixedly connected to the inner side wall of the blanking clamping plate 24. The air sleeve 242 and the rotating shaft 272 rotate relative to each other, and the inner peripheral wall of the air sleeve 242 is sealingly connected to the outer peripheral wall of the rotating shaft 272. An air cavity 243 is circumferentially formed on the inner peripheral wall of the air sleeve 242. The rotating shaft 272 has an air passage 275 extending into the ferrule shaft 27. A first air hole 276 communicating the air passage 275 and the air cavity 243 is formed on the outer peripheral wall of the rotating shaft 272. A tightening ring groove 273 is circumferentially formed on the outer peripheral wall of the ferrule shaft 27. A tightening bladder 28 embedded in the tightening ring groove 273 is provided on the ferrule shaft 27. The tightening bladder 28 is elastic. A second air hole 274 communicating the air passage 275 is radially formed on the inner wall of the tightening ring groove 273. A conduit 281 inserted into the second air hole 274 is convexly fixed to the inner wall of the tightening bladder 28. The conduit 281 communicates between the inner cavity of the tightening bladder 28 and the air passage 275. An air control assembly 7 for controlling the expansion or contraction of the tightening bladder 28 is provided between the movable plate 25 and the blanking side bracket 22.

[0048] The air control assembly 7 includes a connecting plate 71 fixedly connected to the upper part of the blanking side bracket 22, an air control box 72 fixedly connected to the connecting plate 71 and located above the movable plate 25, a sliding plate 73 sealingly and slidably connected to the inner wall of the air control box 72 along the diaphragm conveying direction, a linkage rod 74 fixedly connected to the sliding plate 73 away from one side of the conveyor belt 3, and a hinge rod 75 with one end hinged to the end of the linkage rod 74 away from the conveyor belt 3 and the other end hinged to the movable plate 25. An air control cavity is formed between the inner wall of the sliding plate 73 close to the conveyor belt 3 and the inner wall of the air control box 72. The end face of the air control box 72 away from the conveyor belt 3 is open. An air delivery pipe 76 communicating the air control cavity and the air cavity 243 is fixedly penetrated through the end face of the air control box 72 close to the conveyor belt 3. The air delivery pipe 76 is a flexible pipe.

[0049] The implementation principle of the embodiment of this application is as follows: When the free end of the feeding clamping plate 24 swings from the feeding station to the loading station, the articulated rod 75 pulls the sliding plate 73 to slide away from the conveyor belt 3 through the linkage rod 74, increasing the volume of the air control cavity. The gas in the expansion bladder 28 flows back to the air control cavity, and the expansion bladder 28 contracts. The expansion bladder 28 retracts into the expansion ring groove 273, facilitating the loading and unloading of the diaphragm coil 4. After the new diaphragm coil 4 is loaded, when the free end of the feeding clamping plate 24 swings to the feeding station, the articulated rod 75 pushes the sliding plate 73 to slide towards the conveyor belt 3 through the linkage rod 74. The gas enters the air cavity 243 through the air pipe 76, causing the expansion bladder 28 to expand. The outer peripheral wall of the expansion bladder 28 abuts against the inner peripheral wall of the central hole of the diaphragm coil 4, thereby increasing the friction between the core shaft 27 and the central hole of the diaphragm coil 4, effectively reducing the relative rotation and slipping between the diaphragm coil 4 and the core shaft 27, and ensuring the stable unwinding of the diaphragm coil 4.

[0050] Embodiment 4: The difference from Embodiment 1 is that referring to Figure 9 、 Figure 10 ,the vertical block 551 has a blowing cavity 555. The side wall of the vertical block 551 close to the diaphragm is provided with air blowing holes 556 communicating with the blowing cavity 555 for blowing the lens surface of the photoelectric sensor 56. An air supply assembly 8 is arranged between the tension floating roller 52 and the vertical block 551. The air supply assembly 8 includes an air supply box 81 fixedly connected to the outer wall of the tension frame 5, a partition plate 82 slidably and sealingly connected to the inner wall of the air supply box 81 in the vertical direction to divide the inner cavity of the air supply box 81 into a first chamber 811 and a second chamber 812, a sliding rod 83 fixedly connected to the partition plate 82 and slidably and sealingly passing through the upper end surface of the air supply box 81, and a connecting arm 84 fixedly connected between the sliding rod 83 and the counterweight sliding seat 521. The first chamber 811 is located above the second chamber 812. The air supply box 81 is provided with a first one-way intake pipe 813, a first one-way outlet pipe 814 communicating with the upper side wall of the first chamber 811, a second one-way intake pipe 815, and a second one-way outlet pipe 816 communicating with the lower side wall of the second chamber 812. One-way valves are provided on the first one-way intake pipe 813, the first one-way outlet pipe 814, the second one-way intake pipe 815, and the second one-way outlet pipe 816. The outer side wall of the vertical block 551 is fixedly connected with a main pipe 557 communicating with the blowing cavity 555. The first one-way outlet pipe 814 and the second one-way outlet pipe 816 are both communicated with the main pipe 557.

[0051] The implementation principle of the embodiment of this application is as follows: When the tension floating roller 52 moves upward, it drives the counterweight sliding seat 521, the connecting arm 84, the sliding rod 83, and the partition plate 82 to slide upward together, reducing the volume of the first chamber 811 and increasing the volume of the second chamber 812. At this time, the gas in the first chamber 811 is squeezed by the partition plate 82 and enters the main pipe 557, the air blowing chamber 555 through the first one-way outlet pipe 814, and is ejected from the air blowing holes 556 to continuously blow the surface of the lens, ensuring the cleanliness of the lens surface and preventing the detection accuracy from being affected due to the accumulation of dust or impurities on the lens surface of the photoelectric sensor 56. On the other hand, it is convenient for the heat dissipation of the photoelectric sensor 56. The outside gas enters the second chamber 812 through the second one-way inlet pipe 815. When the tension floating roller 52 moves downward, it drives the counterweight sliding seat 521, the connecting arm 84, the sliding rod 83, and the partition plate 82 to slide downward together, increasing the volume of the first chamber 811 and reducing the volume of the second chamber 812. At this time, the outside gas is inhaled into the first chamber 811 through the first one-way inlet pipe 813, and the gas in the second chamber 812 is squeezed by the partition plate 82 and enters the main pipe 557, the air blowing chamber 555 through the second one-way outlet pipe 816, and is ejected from the air blowing holes 556 to continuously blow the surface of the lens. Based on the reciprocating movement of the tension floating roller 52 and through the cooperation of the first chamber 811 and the second chamber 812, automatic air supply is achieved.

[0052] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An optical film cutting device, characterized in that: It includes a frame (1), a loading rack (2) arranged at the front end of the frame (1), a diaphragm coil (4) installed on the loading rack (2), a conveyor belt (3) arranged on the frame (1) for conveying the diaphragm, and a cutter arranged on the frame (1) for cutting the diaphragm on the conveyor belt (3). The bottom of the frame (1) is fixedly connected with a bottom plate (11). The loading rack (2) is slidably connected to the bottom plate (11) along the width direction of the conveyor belt (3). The bottom plate (11) is provided with an adjusting member for adjusting the sliding position of the loading rack (2). The frame (1) is provided with a sensor for detecting the position of the diaphragm.

2. The optical film cutting device according to claim 1, wherein: The loading rack (2) includes a loading base plate (21) slidably connected to the bottom plate (11), a pair of loading side brackets (22) fixedly connected to the upper end faces on both sides of the loading base plate (21), a cross bar (23) arranged between the upper parts of the two loading side brackets (22), and a pair of loading clamping plates (24) slidably connected to the cross bar (23) along the axial direction of the cross bar (23). The axial direction of the cross bar (23) is parallel to the width direction of the conveyor belt (3). The diaphragm coil (4) is located between the two loading clamping plates (24). The inner wall of the end of the loading clamping plate (24) far from the cross bar (23) is rotatably connected with an insertion core shaft (27) coaxially inserted into the central cylindrical hole of the diaphragm coil (4). The loading clamping plate (24) is provided with a loading motor (241) for driving the insertion core shaft (27) to rotate so as to drive the diaphragm coil (4) to unwind. The cross bar (23) is provided with a clamping and releasing driving member (26) for driving the loading clamping plate (24) to slide. The upper end face of the bottom plate (11) is fixedly connected with a horizontal guide rail (12). The length direction of the horizontal guide rail (12) is parallel to the width direction of the conveyor belt (3). The lower end face of the loading base plate (21) is fixedly connected with a slider slidably connected to the horizontal guide rail (12).

3. An optical film cutting device according to claim 2, characterized in that: An activity plate (25) is hinged to the inner side of the upper part of the loading side bracket (22). The cross bar (23) is fixedly connected between the two activity plates (25). A guide rod is fixedly connected between the two activity plates (25). The axial direction of the guide rod is parallel to the axial direction of the cross bar (23). The loading clamping plate (24) is slidably sleeved on the guide rod. The loading base plate (21) is provided with a swing angle driving member for adjusting the swing angle of the free end of the activity plate (25).

4. An optical film cutting device according to claim 2, characterized in that: A fixing plate (231) is fixedly connected to the middle of the cross bar (23). The clamping and releasing driving member (26) is a clamping and releasing cylinder. The cylinder body of the clamping and releasing cylinder is fixedly connected to the fixing plate (231). The axial direction of the piston rod of the clamping and releasing cylinder is parallel to the axial direction of the cross bar (23). The piston rod of the clamping and releasing cylinder is fixedly connected to the loading clamping plate (24).

5. The optical film cutting device according to claim 2, characterized in that: The clamping and releasing driving member (26) includes a clamping and releasing lead screw (261) rotatably connected to the loading side bracket (22) and a clamping and releasing motor (262) for driving the clamping and releasing lead screw (261) to rotate. The clamping and releasing lead screw (261) has a first thread section and a second thread section. The thread directions of the first thread section and the second thread section are opposite. The two loading clamping plates (24) are respectively threadedly sleeved on the first thread section and the second thread section of the clamping and releasing lead screw (261).

6. The optical film cutting device according to claim 3, wherein: The ferrule shaft (27) is coaxially and fixedly connected with a rotating shaft (272) that passes through the feeding clamping plate (24). The inner side wall of the feeding clamping plate (24) is fixedly connected with an air sleeve (242) coaxially sleeved on the rotating shaft (272). The air sleeve (242) and the rotating shaft (272) rotate relative to each other. The inner peripheral wall of the air sleeve (242) is hermetically connected to the outer peripheral wall of the rotating shaft (272). An air cavity (243) is circumferentially formed on the inner peripheral wall of the air sleeve (242). The rotating shaft (272) has an air passage (275) extending into the ferrule shaft (27). A first air hole (276) communicating the air passage (275) and the air cavity (243) is formed on the outer peripheral wall of the rotating shaft (272). A tightening ring groove (273) is circumferentially formed on the outer peripheral wall of the ferrule shaft (27). The ferrule shaft (27) is provided with a tightening bladder (28) embedded in the tightening ring groove (273). The tightening bladder (28) is elastic. The inner wall of the tightening ring groove (273) is radially provided with a second air hole (274) communicating with the air passage (275). A conduit (281) inserted into the second air hole (274) is convexly fixed on the inner wall of the tightening bladder (28). The conduit (281) communicates between the inner cavity of the tightening bladder (28) and the air passage (275). An air control assembly (7) for controlling the expansion or contraction of the tightening bladder (28) is arranged between the movable plate (25) and the feeding side bracket (22).

7. An optical film cutting device according to claim 6, characterized in that: The air control assembly (7) includes a connecting plate (71) fixedly connected to the upper part of the feeding side bracket (22), an air control box (72) fixedly connected to the connecting plate (71) and located above the movable plate (25), a sliding plate (73) hermetically and slidably connected to the inner wall of the air control box (72) along the diaphragm conveying direction, a linkage rod (74) fixedly connected to the side of the sliding plate (73) away from the conveyor belt (3), and a hinge rod (75) with one end hinged to the end of the linkage rod (74) away from the conveyor belt (3) and the other end hinged to the movable plate (25). An air control cavity is formed between the inner wall of the sliding plate (73) close to the conveyor belt (3) and the inner wall of the air control box (72). The end face of the air control box (72) away from the conveyor belt (3) is open. An air pipe (76) communicating the air control cavity and the air cavity (243) is fixedly penetrated through the end face of the air control box (72) close to the conveyor belt (3). The air pipe (76) is a flexible pipe.

8. An optical film cutting device according to claim 1, characterized in that: The frame (1) is provided with a fixed rod (54) located at the front end of the conveyor belt (3) and below the diaphragm. The length direction of the fixed rod (54) is parallel to the width direction of the conveyor belt (3). The fixed rod (54) is provided with a mounting seat (55) for installing a sensor. There are two mounting seats (55) distributed along the length direction of the fixed rod (54). The mounting seat (55) includes a vertical block (551) mounted on the fixed rod (54) and located outside the diaphragm, an upper block (552) fixedly connected to the side wall of the vertical block (551) and located above the diaphragm, and a lower block (553) fixedly connected to the vertical block (551) and located below the diaphragm. A detection groove is formed between the upper block (552) and the lower block (553). The sensor is an opposed photoelectric sensor (56). The photoelectric sensor (56) at the emitting end is fixedly inserted through the lower block (553), and the photoelectric sensor (56) at the receiving end is fixedly inserted through the upper block (552).

9. An optical film cutting device according to claim 8, characterized in that: The frame (1) is provided with a tension frame (5) located between the unwinding rack (2) and the conveyor belt (3). The tension frame (5) is provided with guide rollers (51) for guiding the diaphragm. There are two guide rollers (51) distributed along the length direction of the frame (1). The tension frame (5) is vertically slidably connected with a tension floating roller (52) located between the two guide rollers (51). The tension floating roller (52) is located below the guide rollers (51). The guide rollers (51) abut against the lower end face of the diaphragm, and the tension floating roller (52) abuts against the upper end face of the diaphragm.

10. An optical film cutting device according to claim 9, characterized in that: The lens of the photoelectric sensor (56) extends into the detection groove. The vertical block (551) has a blowing cavity (555). A blowing hole (556) communicating with the blowing cavity (555) is formed in the side wall of the vertical block (551) close to the diaphragm for blowing the surface of the lens of the photoelectric sensor (56). An air supply assembly (8) is arranged between the tension floating roller (52) and the vertical block (551). The air supply assembly (8) includes an air supply box (81) fixedly connected to the outer wall of the tension frame (5), a partition plate (82) vertically and sealingly slidably connected to the inner wall of the air supply box (81) to divide the inner cavity of the air supply box (81) into a first chamber (811) and a second chamber (812), a sliding rod (83) fixedly connected to the partition plate (82) and sealingly slidably penetrating through the upper end face of the air supply box (81), and a connecting arm (84) fixedly connected between the sliding rod (83) and the end of the tension floating roller (52). The air supply box (81) is provided with a first one-way inlet pipe (813), a first one-way outlet pipe (814) communicating with the first chamber (811), a second one-way inlet pipe (815), and a second one-way outlet pipe (816) communicating with the second chamber (812). The first one-way outlet pipe (814) and the second one-way outlet pipe (816) communicate with the blowing cavity (555) of the vertical block (551). One-way valves are arranged on the first one-way inlet pipe (813), the first one-way outlet pipe (814), the second one-way inlet pipe (815), and the second one-way outlet pipe (816).

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