Stretching device for manufacturing optical film

Abstract

The utility model relates to the technical field of optical film manufacturing, and discloses a stretching device for optical film manufacturing, which comprises a bottom plate, two first mounting racks are fixedly arranged on one side of the top end of the bottom plate, a first roller is arranged between the two first mounting racks, a locking mechanism is arranged on the side face of each first mounting rack, a guide assembly is arranged in the middle of the top end of the bottom plate, and a second roller is arranged between the two first mounting racks. Two second mounting frames are slidably arranged on the other side of the top end of the bottom plate, positioning shafts are rotatably arranged at the top ends of the second mounting frames, a second roller is clamped between the two positioning shafts, and a positioning groove is formed in the surface of the second roller; the stretched optical film can be wound conveniently through the second roller arranged between the second mounting frames, meanwhile, the second mounting frames are movably arranged, the second roller after winding can be disassembled, assembled and replaced conveniently, the position of the first roller wound with the optical film can be limited through the arranged locking mechanism, and the position of the second roller can be adjusted conveniently. The optical film is stretched through rotation of the second roller, and continuous stretching is achieved.

Description

Technical Field

[0001] This utility model relates to the field of optical film manufacturing technology, specifically a stretching device for optical film manufacturing. Background Technology

[0002] Optical films generally refer to optical thin films, which are optical media materials composed of thin, layered media that transmit light beams through interfaces; stretching is required during the manufacturing process of optical films;

[0003] A search revealed an optical thin film lateral stretching device disclosed in application number 202223227820.3. This device includes a base, a support frame fixedly connected to the upper side of the base, a support roller rotatably connected to the upper side of the base, a fixing device above the support roller, and a bidirectional lead screw rotatably connected to the inner wall of the support frame; a support rod through which the bidirectional lead screw passes and is threadedly connected; and auxiliary components. This optical thin film lateral stretching device, through the use of the fixing device, clamps and fixes the film. During the stretching process, as the film gradually thins, the pressure plate continuously presses against the film, and under the action of the placement block, the film is continuously fixed, facilitating the stretching process. Simultaneously, during lateral stretching, both sides of the optical thin film can be stretched, improving the stretching effect.

[0004] However, the above method still has the following drawbacks in actual use: although it can stretch both sides of the optical film, it cannot stretch the optical film continuously. After stretching, it needs to be repeatedly disassembled and reassembled, which reduces the stretching efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a stretching device for manufacturing optical films, which has the effect of continuous stretching without repeated disassembly and assembly.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a stretching device for manufacturing optical films, comprising a base plate, two mounting brackets 1 fixedly provided on one side of the top of the base plate, a roller 1 provided between the two mounting brackets 1, a locking mechanism provided on the side of the mounting brackets 1, a guide assembly provided in the middle of the top of the base plate, two mounting brackets 2 slidably provided on the other side of the top of the base plate, a positioning shaft rotatably provided at the top of the mounting brackets 2, a roller 2 engaged between the two positioning shafts, and a positioning groove provided on the surface of the roller 2.

[0007] A further feature of this invention is that the top of the mounting frame is provided with a mounting groove, and the middle of the roller is fixedly provided with a mounting shaft, the mounting shaft being sized to correspond with the mounting groove and engaging inside the mounting groove.

[0008] A further feature of this invention is that the locking mechanism includes two mounting rods and a bidirectional lead screw. The mounting rods are slidably connected to the bottom of the first mounting bracket. A locking disc is fixedly provided at one end of the mounting rod, and an adjusting seat that is threadedly connected to the bidirectional lead screw is fixedly provided at the other end of the mounting rod. The bidirectional lead screw is rotatably disposed between the two first mounting brackets.

[0009] A further feature of this invention is that a driven bevel gear is fixedly provided in the middle of the bidirectional lead screw, a motor frame is fixedly provided on the side of the base plate, a locking motor is fixedly provided on one side of the motor frame, and a driving bevel gear that meshes with the driven bevel gear is fixedly provided on the transmission shaft of the locking motor.

[0010] A further feature of this invention is that: the base plate has two telescopic grooves that slidably cooperate with the mounting bracket 2 inside; each side of the telescopic groove has a sliding groove 1; the end of the mounting bracket 2 has a slider 1 that slidably cooperates with the sliding groove 1; the top of the telescopic groove has a guide groove; the bottom of the mounting bracket 2 has a guide seat that slidably cooperates with the guide groove; the top of the base plate has a mounting seat; and a connecting spring is provided between the mounting seat and the guide seat.

[0011] A further feature of this invention is that a motor frame two is fixedly mounted on one side of one of the mounting frames two, and a winding motor is fixedly mounted on one side of the motor frame two, with the drive shaft of the winding motor connected to one end of one of the positioning shafts.

[0012] A further feature of this invention is that: a locking block is fixedly provided at the other end of the positioning shaft, a mounting shaft is fixedly provided in the middle of the roller two, and a slot for engaging with the locking block is provided at the end of the mounting shaft two.

[0013] A further feature of this invention is that the guide assembly includes two mounting frames and a guide roller. The mounting frames are slidably disposed on both sides of the base plate, and a fixed seat is fixedly disposed at the top of the mounting frame. The guide roller is rotatably disposed between the two fixed seats.

[0014] A further feature of this invention is as follows: a transmission gear plate is fixedly provided at the top of the base plate; a connecting shaft is rotatably provided between the two mounting brackets 3; a transmission gear that meshes with the transmission gear plate is fixedly provided on the surface of the connecting shaft; a motor bracket 3 is fixedly provided on one side of one of the mounting brackets 3; a drive motor is fixedly provided on one side of the motor bracket 3; the transmission shaft of the drive motor is connected to one end of the connecting shaft; a sliding groove 2 is provided on both sides of the base plate; and a slider 2 that slides in cooperation with the sliding groove 2 is fixedly provided at the bottom of the mounting bracket 3.

[0015] A further feature of this invention is that the positioning groove has an opening inside, a positioning plate is engaged inside the positioning groove, a positioning block is provided at the bottom of the positioning plate, and the positioning plate is connected to the positioning groove by positioning screws.

[0016] In summary, this utility model has the following beneficial effects: The rollers two installed between the mounting frames facilitate the winding of the stretched optical film. Simultaneously, the movable mounting frames facilitate the disassembly and replacement of the wound rollers. The locking mechanism limits the position of the rollers with the optical film wound on them. The rotation of the rollers allows for continuous stretching of the optical film, eliminating the need for repeated disassembly and reassembly. Furthermore, the guide component guides the stretched optical film, and its movable position allows for guidance at different locations, enabling further stretching and preventing wrinkles on the surface of the optical film. Attached Figure Description

[0017] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model;

[0018] Figure 2 This is the second three-dimensional structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of mounting bracket two and mounting bracket three after separation.

[0020] Figure 4 This is a cross-sectional structural diagram of the base plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of roller two of this utility model;

[0022] Figure 6 This utility model Figure 5 Schematic diagram of the structure after the middle positioning plate is separated;

[0023] Figure 7 This is a cross-sectional structural diagram of roller two of this utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the mounting bracket 2 of this utility model;

[0025] Figure 9 This utility model Figure 1 A magnified structural diagram at point A.

[0026] In the diagram: 1. Base plate; 101. Slide groove one; 102. Telescopic groove; 103. Slide groove two; 104. Mounting base; 105. Guide groove; 2. Mounting bracket one; 201. Mounting groove; 3. Roller one; 301. Mounting shaft one; 4. Locking mechanism; 401. Mounting rod; 402. Locking disc; 403. Double-acting lead screw; 404. Driven bevel gear; 405. Adjusting seat; 406. Motor bracket one; 407. Locking motor; 408. Driven bevel gear; 5. Mounting bracket two; 501. 502. Slider 1; 503. Guide seat; 504. Connecting spring; 505. Positioning shaft; 506. Locking block; 507. Motor frame 2; 508. Rewinding motor; 6. Roller 2; 601. Mounting shaft 2; 602. Locking groove; 603. Positioning groove; 604. Positioning plate; 7. Mounting frame 3; 701. Slider 2; 702. Fixed seat; 703. Guide roller; 704. Connecting shaft; 705. Transmission gear; 706. Motor frame 3; 707. Drive motor; 708. Transmission gear plate. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings of the embodiments thereof.

[0028] Please see Figures 1-9 In this embodiment of the present invention, a stretching device for manufacturing optical films includes a base plate 1. Two mounting brackets 2 are fixedly provided on one side of the top of the base plate 1, and a roller 3 is provided between the two mounting brackets 2. A locking mechanism 4 is provided on the side of the mounting brackets 2 to limit the position of the roller 3 and prevent it from rotating when stretching the optical film. A guide component is provided in the middle of the top of the base plate 1 to guide the stretching of the optical film and to move it to prevent wrinkles on the surface of the optical film. Two mounting brackets 5 are slidably provided on the other side of the top of the base plate 1. The roller 6 between the sliding mounting brackets 5 can be quickly disassembled and replaced after winding. A positioning shaft 504 is rotatably provided at the top of the mounting brackets 5. The roller 6 is engaged between the two positioning shafts 504 for winding the stretched optical film. The engaged roller 6 is easy to disassemble and assemble. A positioning groove 603 is provided on the surface of the roller 6 to limit the position of one end of the optical film, which is beneficial to the subsequent winding work.

[0029] In this embodiment, preferably, the top of the mounting frame 2 is provided with a mounting groove 201, and the middle of the roller 3 is fixedly provided with a mounting shaft 301. The mounting shaft 301 corresponds to the size of the mounting groove 201. The mounting shaft 301 is engaged inside the mounting groove 201, which limits the position of the roller 3 after installation and does not interfere with the rotation of the roller 3.

[0030] In this embodiment, preferably, the locking mechanism 4 includes two mounting rods 401 and a bidirectional lead screw 403. The mounting rods 401 are slidably connected to the bottom of the mounting bracket 2. One end of the mounting rod 401 is fixedly provided with a locking disc 402, and the other end of the mounting rod 401 is fixedly provided with an adjusting seat 405 that is threadedly connected to the bidirectional lead screw 403. The bidirectional lead screw 403 is rotatably disposed between the two mounting brackets 2, and the thread grooves at both ends of the bidirectional lead screw 403 are in opposite directions. When the bidirectional lead screw 403 rotates, it synchronously drives the two locking discs 402 to move towards each other, clamping both ends of the mounting shaft 301 and locking its position.

[0031] In this embodiment, preferably, a driven bevel gear 404 is fixedly provided in the middle of the bidirectional lead screw 403, a motor frame 406 is fixedly provided on the side of the base plate 1, a locking motor 407 is fixedly provided on one side of the motor frame 406, and a driving bevel gear 408 that meshes with the driven bevel gear 404 is fixedly provided on the transmission shaft of the locking motor 407. The locking motor 407 drives the driving bevel gear 408 to rotate, and under the meshing of the driving bevel gear 408 and the driven bevel gear 404, the bidirectional lead screw 403 is driven to rotate.

[0032] In this embodiment, preferably, the base plate 1 has two telescopic grooves 102 that cooperate with the mounting frame 2 5. Both sides of the telescopic groove 102 are provided with sliding grooves 101. The end of the mounting frame 2 5 is provided with a slider 501 that slides with the sliding groove 101, which guides the movement of the mounting frame 2 5. The top of the telescopic groove 102 is provided with a guide groove 105, which does not interfere with the movement of the mounting frame 2 5. The bottom of the mounting frame 2 5 is fixedly provided with a guide seat 502 that slides with the guide groove 105. The top of the base plate 1 is fixedly provided with a mounting seat 104. A connecting spring 503 is provided between the mounting seat 104 and the guide seat 502, which can reset the mounting frame 2 5, prevent the mounting frame 2 5 from moving on its own, and can move the mounting frame 2 5 outward when it is necessary to disassemble and assemble the roller 2 6, so as to quickly disassemble and assemble the roller 2 6.

[0033] In this embodiment, preferably, a motor frame 506 is fixedly provided on one side of one of the mounting frames 5, and a winding motor 507 is fixedly provided on one side of the motor frame 506. The drive shaft of the winding motor 507 is connected to one end of one of the positioning shafts 504. The rotation of the drive shaft of the winding motor 507 can drive the positioning shaft 504 to rotate, thereby driving the roller 6 to rotate and winding up the stretched optical film.

[0034] In this embodiment, preferably, a locking block 505 is fixedly provided at the other end of the positioning shaft 504, and an installation shaft 601 is fixedly provided in the middle of the roller 6. The end of the installation shaft 601 is provided with a slot 602 that engages with the locking block 505. The engagement between the slot 602 and the locking block 505 enables the roller 6 to be quickly assembled and disassembled.

[0035] In this embodiment, preferably, the guiding component includes two mounting brackets 7 and a guide roller 703. The mounting brackets 7 are slidably disposed on both sides of the base plate 1. The top of the mounting brackets 7 is fixedly provided with a fixing seat 702. The guide roller 703 is rotatably disposed between the two fixing seats 702. The guide roller 703 can guide the stretched optical film and further stretch the optical film.

[0036] In this embodiment, preferably, a transmission gear plate 708 is fixedly provided at the top of the base plate 1, and a connecting shaft 704 is rotatably provided between the two mounting brackets 7. A transmission gear 705 that meshes with the transmission gear plate 708 is fixedly provided on the surface of the connecting shaft 704. A motor bracket 706 is fixedly provided on one side of one of the mounting brackets 7, and a drive motor 707 is fixedly provided on one side of the motor bracket 706. The transmission shaft of the drive motor 707 is connected to one end of the connecting shaft 704. The drive motor 707 can drive the connecting shaft 704 to rotate, thereby driving the transmission gear 705 to rotate. Under the meshing action of the transmission gear 705 and the transmission gear plate 708, the mounting bracket 7 moves laterally, stretching the optical film at different positions again to prevent wrinkles from forming on its surface. Both sides of the base plate 1 are provided with sliding grooves 103. A slider 701 that slides with the sliding groove 103 is fixedly provided at the bottom of the mounting bracket 7. The sliding engagement between the slider 701 and the sliding groove 103 guides the movement of the mounting bracket 7.

[0037] In this embodiment, preferably, the positioning groove 603 has an opening inside, and a positioning plate 604 is engaged inside the positioning groove 603. The bottom end of the positioning plate 604 has a positioning block, and the outer surface of the positioning plate 604 is set as an arc shape corresponding to the outer side of the roller 6. The positioning plate 604 is connected to the positioning groove 603 by a positioning screw. The surface of the positioning plate 604 has a countersunk hole corresponding to the positioning screw to accommodate the bolt head of the positioning screw.

[0038] In use, firstly, the roller 3 wrapped with optical film is installed into the mounting groove 201 of the mounting bracket 2 to limit its position. Then, one end of the optical film is pulled to one side of the roller 6 and installed into the positioning groove 603. Next, the positioning plate 604 is engaged with the inside of the positioning groove 603, and the position of the positioning plate 604 is fixed with positioning screws, so that one end of the optical film is engaged with the surface of the roller 6. Then, the locking motor 407 is started, which drives the driving bevel gear 408 to rotate. Under the meshing engagement of the driving bevel gear 408 and the driven bevel gear 404, the bidirectional lead screw 403 is driven to rotate. When the bidirectional lead screw 403 rotates, it synchronously drives the two locking discs 402 to move towards each other, clamping and limiting the position of the roller 3 to prevent it from rotating. Then, the winding motor 507 is started. The rotation of the drive shaft of the winding motor 507 drives the positioning shaft 504 to rotate, thereby... The second roller 6 is driven to rotate. Since the position of the first roller 3 is fixed, the optical film between the second roller 6 and the first roller 3 can be stretched. After stretching, the drive motor 707 is started, which drives the connecting shaft 704 to rotate, thereby driving the transmission gear 705 to rotate. Under the meshing action of the transmission gear 705 and the transmission gear plate 708, the mounting frame 7 moves laterally, stretching different positions of the optical film again to prevent wrinkles from forming on its surface. After stretching is completed, the locking motor 407 is controlled to reverse, releasing the restriction on the first roller 3. Then, the winding motor 507 is started to drive the second roller 6 to rotate and wind up the stretched optical film. After the stretched optical film is wound up, the above steps are repeated to stretch the remaining optical film. After all the optical film on the first roller 3 is stretched, the mounting frame 25 is moved outward, and the second roller 6 between the mounting frames 25 is removed and replaced with a new second roller 6.

[0039] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A stretching apparatus for manufacturing optical films, comprising a base plate (1), characterized in that, Two mounting brackets (2) are fixedly provided on one side of the top of the base plate (1). A roller (3) is provided between the two mounting brackets (2). A locking mechanism (4) is provided on the side of the mounting brackets (2). A guide assembly is provided in the middle of the top of the base plate (1). Two mounting brackets (5) are slidably provided on the other side of the top of the base plate (1). A positioning shaft (504) is rotatably provided at the top of the mounting brackets (5). A roller (6) is engaged between the two positioning shafts (504). A positioning groove (603) is provided on the surface of the roller (6).

2. The stretching apparatus for manufacturing optical films according to claim 1, characterized in that: The top of the mounting bracket (2) is provided with a mounting groove (201), and the middle of the roller (3) is fixedly provided with a mounting shaft (301). The mounting shaft (301) corresponds to the size of the mounting groove (201), and the mounting shaft (301) is engaged inside the mounting groove (201).

3. The stretching apparatus for manufacturing optical films according to claim 2, characterized in that: The locking mechanism (4) includes two mounting rods (401) and a two-way screw (403). The mounting rods (401) are slidably connected to the bottom of the mounting bracket (2). One end of the mounting rod (401) is fixedly provided with a locking disc (402), and the other end of the mounting rod (401) is fixedly provided with an adjusting seat (405) that is threadedly connected to the two-way screw (403). The two-way screw (403) is rotatably disposed between the two mounting brackets (2).

4. The stretching apparatus for manufacturing optical films according to claim 3, characterized in that: The driven bevel gear (404) is fixedly provided in the middle of the bidirectional lead screw (403), the motor frame (406) is fixedly provided on the side of the base plate (1), the locking motor (407) is fixedly provided on one side of the motor frame (406), and the drive shaft of the locking motor (407) is fixedly provided with the driving bevel gear (408) that meshes with the driven bevel gear (404).

5. The stretching apparatus for manufacturing optical films according to claim 1, characterized in that: The base plate (1) has two telescopic grooves (102) that cooperate with the mounting bracket (5) inside. Both sides of the telescopic groove (102) are provided with a sliding groove (101). The end of the mounting bracket (5) is provided with a slider (501) that cooperates with the sliding groove (101). The top of the telescopic groove (102) is provided with a guide groove (105). The bottom of the mounting bracket (5) is fixedly provided with a guide seat (502) that cooperates with the guide groove (105). The top of the base plate (1) is fixedly provided with a mounting seat (104). A connecting spring (503) is provided between the mounting seat (104) and the guide seat (502).

6. The stretching apparatus for manufacturing optical films according to claim 5, characterized in that: One of the mounting brackets (5) is fixedly provided with a motor bracket (506) on one side, and a winding motor (507) is fixedly provided on one side of the motor bracket (506). The drive shaft of the winding motor (507) is connected to one end of one of the positioning shafts (504).

7. The stretching apparatus for manufacturing optical films according to claim 6, characterized in that: The other end of the positioning shaft (504) is fixedly provided with a locking block (505), the middle part of the roller two (6) is fixedly provided with an installation shaft two (601), and the end of the installation shaft two (601) is provided with a slot (602) that engages with the locking block (505).

8. The stretching apparatus for manufacturing optical films according to claim 1, characterized in that: The guide assembly includes two mounting brackets (7) and a guide roller (703). The mounting brackets (7) are slidably disposed on both sides of the base plate (1). The top of the mounting brackets (7) is fixedly provided with a fixing seat (702), and the guide roller (703) is rotatably disposed between the two fixing seats (702).

9. The stretching apparatus for manufacturing optical films according to claim 8, characterized in that: A transmission gear plate (708) is fixedly provided at the top of the base plate (1). A connecting shaft (704) is rotatably provided between the two mounting brackets (7). A transmission gear (705) that meshes with the transmission gear plate (708) is fixedly provided on the surface of the connecting shaft (704). A motor bracket (706) is fixedly provided on one side of one of the mounting brackets (7). A drive motor (707) is fixedly provided on one side of the motor bracket (706). The transmission shaft of the drive motor (707) is connected to one end of the connecting shaft (704). A sliding groove (103) is provided on both sides of the base plate (1). A slider (701) that slides in cooperation with the sliding groove (103) is fixedly provided at the bottom of the mounting bracket (7).

10. The stretching apparatus for manufacturing optical films according to claim 1, characterized in that: The positioning groove (603) has an opening inside, and a positioning plate (604) is engaged inside the positioning groove (603). The bottom end of the positioning plate (604) has a positioning block, and the positioning plate (604) is connected to the positioning groove (603) by positioning screws.

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