A stretching device for producing a reflective film

Abstract

The present invention discloses a stretching device for producing a reflective film, which relates to the technical field of reflective film production. It includes a protective box. Inside the protective box, there is a movable plate. On one side of the two movable plates close to each other, a square groove is opened. Inside the square groove, a stretching roller is fixedly arranged. Inside the square groove, a sliding plate is slidably arranged. On the side wall of the movable plate, a rotating wheel is arranged. On the rotating wheel, a connecting rope is arranged. The sliding ring is slidably arranged outside the stretching roller. Outside the sliding ring, a mounting plate is arranged. On the mounting plate, a fixed cylinder is arranged. At one end of the fixed cylinder, a support cylinder is arranged. The stretching roller slides left and right to stretch the reflective film. The transmission plate drives the rotating wheel to rotate through the engagement of the rack and the gear groove. The rotating wheel drives the sliding plate to move by cooperating with the connecting rope. The sliding plate levels the reflective film by cooperating with the rotating cylinder, ensuring the stretching effect of the stretching device.

Description

Technical Field

[0001] The present invention relates to the technical field of reflective film production, and specifically to a stretching device for reflective film production. Background Art

[0002] A reflective film is an optical material mainly used in the backlight module of a liquid crystal display, located at the bottom of the backlight module and under the light guide plate. Its function is to reflect the light leaking through the light guide plate back, reduce light loss, and increase backlight brightness. Reflective films can generally be divided into two categories, one is a metal reflective film and the other is a fully dielectric reflective film. The larger the extinction coefficient, the more rapidly the light amplitude decays, the less light energy enters the interior, and the higher the reflectivity.

[0003] When producing a reflective film, a stretching device is required for stretching. The stretching process can align the molecular chains inside the reflective film to form a more compact and orderly structure, thereby improving the tensile strength and toughness of the film. The existing stretching device consists of two sets of stretching rollers, and its internal structure is relatively simple. It cannot level the stretched reflective film, and the reflective film is prone to defects such as being too tight or having wrinkles, which affects the production quality of the reflective film. Summary of the Invention

[0004] The purpose of the present invention is to provide a stretching device for reflective film production to solve the problem of inconvenient use of existing stretching devices.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A stretching device for reflective film production, including a protective box, further including:

[0007] Stretching rollers. Inside the protective box, there is a movable plate. On one side where the two movable plates are close to each other, a square groove is opened. Inside the square groove, a stretching roller is fixedly arranged. Inside the square groove, a sliding plate is slidably arranged. On the side wall of the movable plate, a rotating wheel is arranged. A connecting rope is arranged on the rotating wheel. Both ends of the connecting rope are connected to the sliding plate. At the bottom of the sliding plate, a sliding ring is arranged. The sliding ring is slidably arranged outside the stretching roller. Outside the sliding ring, a mounting plate is arranged. On the mounting plate, a fixed cylinder is arranged. At one end of the fixed cylinder, a support cylinder is arranged. Inside the support cylinder, a rotating cylinder is arranged. Outside the rotating cylinder, a plurality of leveling plates are arranged. Inside the protective box, a fixed plate is arranged. A sliding groove is opened on the fixed plate. Outside the movable plate, a limiting plate is arranged. At one end of the limiting plate, a transmission plate is slidably arranged. A stretching spring is arranged between the transmission plate and the limiting plate. The transmission plate is slidably arranged inside the sliding groove. A rack is arranged on the transmission plate. A plurality of gear grooves meshing with the rack are opened on the rotating wheel. A plurality of limiting columns cooperating with the rack are arranged on the fixed plate;

[0008] Pressing roller, support frames are provided on both outer sides of the protective box, support rods are provided inside the support frames, a pressing roller for fixing the reflective film is provided outside the support rods, a support plate is provided outside the movable plate, a movable column is provided on the support plate, a guiding plate is provided inside the protective box, a guiding groove is formed on the guiding plate, an inclined groove and an elastic piece are provided inside the guiding groove, and one end of the movable column penetrates into the guiding groove and is in sliding fit with it;

[0009] Driving mechanism, connected to the movable plate, the driving mechanism drives the movable plate and the stretching roller to slide left and right, the stretching roller stretches the reflective film by extrusion, the transmission plate drives the rotating wheel to rotate through the engagement of the rack and the gear groove, and the rotating wheel drives the sliding plate to move through the cooperation with the connecting rope, and the sliding plate levels the reflective film through the cooperation with the rotating cylinder.

[0010] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0011] In an optional solution: the driving mechanism includes a screw rod, a driving block and a motor, a transmission groove is formed on the movable plate, a driving block is provided between the two transmission grooves, a limiting block is provided on the side wall of the driving block, the limiting block is slidably arranged inside the protective box, a motor is provided inside the protective box, the rotating end of the motor is connected with a screw rod, and a screw nut cooperating with the screw rod is provided on the limiting block.

[0012] In an optional solution: a pressing plate is slidably arranged inside the fixed cylinder, a top plate is provided at one end of the pressing plate, and a plurality of grooves cooperating with the pressing plate are formed on the movable plate.

[0013] In an optional solution: mounting blocks are provided on both outer sides of the protective box, a transmission frame is slidably arranged inside the mounting blocks, the bottom of the transmission frame contacts the pressing roller, and a telescopic spring is sleeved outside the transmission frame.

[0014] In an optional solution: a guide rail is provided on the top of the protective box, movable blocks are slidably arranged on both outer sides of the guide rail, and the movable blocks contact the top end of the transmission frame.

[0015] In an optional solution: a threaded rod is provided inside the guide rail, a threaded sleeve cooperating with the threaded rod is provided inside the movable block, a driving motor is provided inside the guide rail, and a gear set is provided between the driving motor and the threaded rod.

[0016] In an optional solution: rotating gears are provided on both outer sides of the support frame, a sliding frame is provided outside the support rod, and teeth meshing with the rotating gears are provided on the sliding frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] The stretching device for producing reflective films drives the movable plate and the stretching roller to slide left and right through the driving mechanism. Two sets of pressure rollers approach each other and fix the reflective film. The stretching roller slides left and right and stretches the reflective film. The transmission plate drives the rotating wheel to rotate through the meshing of the rack and the gear slot. The rotating wheel drives the sliding plate to move by cooperating with the connecting rope. The sliding plate levels the reflective film by cooperating with the rotating cylinder, preventing the surface of the reflective film from wrinkling during processing and ensuring the stretching effect of the stretching device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the stretching device for producing reflective films.

[0020] Figure 2 It is a front sectional view of the protective box in the stretching device for producing reflective films.

[0021] Figure 3 It is a rear sectional view of the protective box in the stretching device for producing reflective films.

[0022] Figure 4 It is a schematic structural diagram of the interior of the protective box in the stretching device for producing reflective films.

[0023] Figure 5 It is a sectional view of the movable plate in the stretching device for producing reflective films.

[0024] Figure 6 It is a schematic structural diagram of the fixed cylinder in the stretching device for producing reflective films.

[0025] Figure 7 It is a sectional view of the fixed cylinder in the stretching device for producing reflective films.

[0026] Figure 8 It is a schematic structural diagram of the fixed plate in the stretching device for producing reflective films.

[0027] Figure 9 It is a schematic structural diagram of the guide plate in the stretching device for producing reflective films.

[0028] Figure 10 It is for the stretching device for producing reflective films Figure 1 An enlarged view of part E therein.

[0029] Annotation of reference numerals: 1 - protective box, 2 - cabinet door, 3 - support rod, 4 - guide rail, 5 - movable block, 6 - mounting block, 7 - transmission frame, 8 - telescopic spring, 9 - support frame, 10 - pressure roller, 11 - sliding frame, 12 - rotating gear, 13 - threaded rod, 14 - threaded sleeve, 15 - drive motor, 16 - gear set, 17 - fixing plate, 171 - sliding groove, 18 - motor, 19 - guide plate, 191 - guide groove, 192 - elastic sheet, 193 - inclined groove, 20 - limiting block, 21 - movable plate, 211 - square groove, 212 - transmission groove, 213 - groove, 22 - support plate, 23 - drive block, 231 - screw rod, 24 - stretching roller, 25 - movable column, 26 - sliding plate, 261 - sliding ring, 27 - connecting rope, 28 - rotating wheel, 281 - gear groove, 29 - limiting column, 30 - transmission plate, 31 - limiting plate, 32 - rack, 33 - pressing plate, 331 - top plate, 34 - fixed cylinder, 35 - mounting plate, 36 - support cylinder, 361 - rotating cylinder, 362 - leveling plate, 37 - stretching spring. Detailed implementation manners

[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0032] As Figures 1-10 shown, a stretching device for producing a reflective film provided by an embodiment of the present invention includes a protective box 1, and further includes:

[0033] The stretching roller 24, a cabinet door 2 is provided on the front of the protective box 1, an observation window and control buttons are provided on the cabinet door 2, the A side of the protective box 1 is the front, the B side is the back, two groups of movable plates 21 are vertically arranged inside the protective box 1, square grooves 211 are formed on the sides of the two movable plates 21 close to each other, a stretching roller 24 is fixedly arranged inside the square groove 211, the reflective film passes through the protective box 1 and is located between the two stretching rollers 24, the two movable plates 21 approach each other and squeeze and fix the reflective film through the stretching roller 24, the movable plate 21 drives the stretching roller 24 to move horizontally, so as to stretch the reflective film. Two groups of sliding plates 26 are slidably arranged inside each square groove 211, a rotating wheel 28 is rotatably arranged on the side wall of the movable plate 21, a connecting rope 27 is arranged on the rotating wheel 28, both ends of the connecting rope 27 are connected with the sliding plate 26, the rotating wheel 28 drives the connecting rope 27 on it to move, the connecting rope 27 pulls the sliding plates 26 at both ends to approach or move away from each other. A sliding ring 261 is arranged at the bottom of the sliding plate 26, the sliding ring 261 is slidably arranged outside the stretching roller 24, an installation plate 35 is horizontally arranged outside the sliding ring 261, a fixed cylinder 34 is fixedly arranged on the installation plate 35, a support cylinder 36 is fixedly arranged at one end of the fixed cylinder 34, a rotating cylinder 361 is rotatably arranged inside the support cylinder 36, and a plurality of flattening plates 362 are arranged outside the rotating cylinder 361, the flattening plates 362 are elastically installed on the rotating cylinder 361. The two sliding plates 26 move horizontally and drive the rotating cylinder 361 to move, and the flattening plates 362 on the rotating cylinder 361 press down on the reflective film to flatten the reflective film and prevent wrinkles from occurring on it. A fixing plate 17 is fixedly arranged inside the protective box 1, and a sliding groove 171 is formed on the fixing plate 17;

[0034] A limiting plate 31 is fixedly arranged outside the movable plate 21, a transmission plate 30 is slidably arranged at one end of the limiting plate 31, the limiting plate 31 limits the transmission plate 30, so that the transmission plate 30 can move horizontally along one end of the limiting plate 31, and the transmission plate 30 is always in the horizontal direction. A stretching spring 37 is arranged between the transmission plate 30 and the limiting plate 31. The initial position is as Figure 8 shown. The transmission plate 30 is slidably arranged inside the sliding groove 171, a rack 32 is arranged on the transmission plate 30, a plurality of gear grooves 281 meshing with the rack 32 are formed on the rotating wheel 28, and a plurality of limiting columns 29 cooperating with the rack 32 are vertically arranged on the fixing plate 17;

[0035] Outside the movable plate 21, there is a support plate 22. On the support plate 22, there is a movable column 25. Inside the protection box 1, there is a guide plate 19 fixedly arranged. On the guide plate 19, there is a guide groove 191. Inside the guide groove 191, there are inclined grooves 193 and elastic pieces 192. One end of the movable column 25 penetrates into the guide groove 191 and is in sliding fit with it. The structure of the guide groove 191 is as Figure 9 shown. The movement directions of the two movable columns 25 are as Figure 9 shown. The guide groove 191 consists of two horizontal grooves CD. The movable column 25 is slidably arranged inside the guide groove 191. When the two movable plates 21 move along the Figures 2-4 direction, the movable column 25 is located inside the horizontal groove D. The two movable plates 21 approach each other, and the reflective film is stretched by the stretching roller 24. After the movable column 25 slides a certain distance, it falls into the inclined groove 193. The two movable plates 21 move away from each other, and the stretching roller 24 is separated from the reflective film, releasing the reflective film. The movable column 25 slides out of the inclined groove 193, and the stretching roller 24 continues to stretch the reflective film. The multiple inclined grooves 193 can prevent the reflective film from being overstretched and damaged. Compared with the one-time stretching of traditional equipment, it can effectively prevent the reflective film from being damaged during stretching and ensure the stretching effect. When the movable plate 21 slides in the reverse direction, at this time, the movable column 25 moves along the horizontal groove C, and the stretching roller 24 cannot contact the reflective film, and the reflective film can be moved to move the unstretched part into the protection box 1, which is convenient for the next round of stretching of the reflective film. The guide groove 191 is provided with elastic pieces 192. The elastic pieces 192 are elastically installed inside the guide plate 19 through springs and can limit the movable column 25, so that the movable column 25 can only move along the Figure 9 direction shown;

[0036] A driving mechanism, which is connected to the movable plate 21. The driving mechanism drives the movable plate 21 and the stretching roller 24 to slide left and right. The stretching roller 24 stretches by squeezing the reflective film. The transmission plate 30 drives the rotating wheel 28 to rotate through the meshing of the rack 32 and the gear groove 281. The rotating wheel 28 drives the sliding plate 26 to move through the cooperation with the connecting rope 27. The sliding plate 26 levels the reflective film through the cooperation with the rotating cylinder 361.

[0037] As Figures 1-4As shown, as a preferred embodiment of the present invention, the driving mechanism includes a screw rod 231, a driving block 23, and a motor 18. Transmission grooves 212 are formed on both sides of the movable plate 21. A driving block 23 is slidably arranged between the two transmission grooves 212. A limiting block 20 is arranged on the side wall of the driving block 23. The limiting block 20 is slidably arranged inside the protection box 1, that is, the limiting block 20 and the driving block 23 can only move horizontally, and the two groups of movable plates 21 can slide up and down. A motor 18 is arranged inside the protection box 1. The rotating end of the motor 18 is connected to a screw rod 231. A screw nut matching with the screw rod 231 is arranged on the limiting block 20. The motor 18 drives the screw rod 231 to rotate, and the screw rod 231 drives the driving block 23 and the movable plate 21 to move left and right.

[0038] As Figures 6-8 As shown, as a preferred embodiment of the present invention, a pressing plate 33 is slidably arranged inside the fixed cylinder 34. One end of the pressing plate 33 is provided with a top plate 331. The top plate 331 is an elastic rod with an L-shaped structure and is fixedly arranged on the side wall of the pressing plate 33. A plurality of grooves 213 matching with the pressing plate 33 are formed on the movable plate 21. The sliding plate 26 slides along the square groove 211. The pressing plate 33 drives the top plate 331 to stretch and contract along the inner wall of the fixed cylinder 34. The top plate 331 presses the flattening plate 362, causing the rotating cylinder 361 to rotate, and the reflection film is flattened by the flattening plate 362.

[0039] As Figures 1-2 As shown, as a preferred embodiment of the present invention, mounting blocks 6 are arranged on both outer sides of the protection box 1. A transmission frame 7 is slidably arranged inside the mounting block 6. The bottom of the transmission frame 7 contacts the pressing roller 10. A telescopic spring 8 is sleeved outside the transmission frame 7. The telescopic spring 8 pulls the transmission frame 7, so that the lower pressing roller 10 is in the initial position.

[0040] As Figures 1-2 As shown, as a preferred embodiment of the present invention, a guide rail 4 is arranged on the top of the protection box 1. Movable blocks 5 are slidably arranged on both outer sides of the guide rail 4. The movable blocks 5 contact the top ends of the transmission frames 7. The two movable blocks 5 move away from each other and press the transmission frames 7. The transmission frames 7 drive the two pressing rollers 10 in the vertical direction to approach each other.

[0041] As Figures 1-2 As shown, as a preferred embodiment of the present invention, a threaded rod 13 is rotatably arranged inside the guide rail 4. A threaded sleeve 14 matching with the threaded rod 13 is arranged inside the movable block 5. A driving motor 15 is arranged inside the guide rail 4. A gear set 16 is arranged between the driving motor 15 and the threaded rod 13. The driving motor 15 drives the threaded rod 13 to rotate, and the threaded rod 13 drives the movable block 5 to move horizontally through the threaded sleeve 14.

[0042] As Figure 1 shown, as a preferred embodiment of the present invention, support frames 9 are provided on both outer sides of the protection box 1. Sliding frames 11 are slidably provided on both sides of the support frames 9. A support rod 3 is fixedly provided between the two sliding frames 11. A pressing roller 10 is fixedly provided on the outer part of the support rod 3. Rotating gears 12 are provided on both outer sides of the support frames 9. Teeth meshing with the rotating gears 12 are provided on the outer part of the sliding frames 11. The rotating gears 12 drive the two sliding frames 11 to approach or move away from each other through the teeth, and the sliding frames 11 drive the pressing roller 10 to move, so as to extrude and fix the passing reflection film.

[0043] In the above embodiment of the present invention, a reflection film production stretching device is provided. The reflection film penetrates into the protection box 1 and is located between two stretching rollers 24. The transmission frame 7 drives the two pressing rollers 10 to approach each other to extrude and fix the reflection film; the motor 18 drives the screw rod 231 to rotate, and the screw rod 231 drives the driving block 23 and the movable plate 21 to move left and right; the two movable plates 21 move along the Figures 2-4 direction. At this time, the movable column 25 is located inside the horizontal groove D. The two movable plates 21 approach each other to fix and stretch the reflection film. After the movable column 25 slides a certain distance, it falls into the inclined groove 193. The two movable plates 21 move away from each other, and the stretching rollers 24 are separated from the reflection film to release the reflection film. At this time, the movable plate 21 drives the externally provided limiting plate 31 to move, so that the two limiting plates 31 in the vertical direction move away from each other. The limiting plate 31 drives the transmission plate 30 to move. The rack 32 on the transmission plate 30 is disengaged from the limiting column 29, and the locking of the transmission plate 30 is released. The tension spring 37 pulls the transmission plate 30 to reset. The transmission plate 30 drives the rotating wheel 28 to rotate through the rack 32 and the gear groove 281. The rotating wheel 28 pulls the sliding plate 26 to move horizontally through the connecting rope 27. The sliding plate 26 levels the reflection film through the leveling plate 362. That is, every time the movable column 25 moves into the inclined groove 193, the transmission plate 30 is released, so that the sliding plate 26 moves horizontally and levels the reflection film through the leveling plate 362. In order to ensure the leveling effect of the reflection film, the length of the inclined groove 193 can be adjusted to ensure that the leveling plate 362 has enough moving time; the movable column 25 slides out of the inclined groove 193, the movable plates 21 approach each other, the transmission plate 30 resets and is stuck by the limiting column 29 (i.e., Figure 8 the position shown), the movable plate 21 continues to drive the limiting plate 31 to move, the transmission plate 30 cannot move, the tension spring 37 is stretched and generates a pulling force, the connecting rope 27 pulls the sliding plate 26 to slide in the opposite direction and reset, the movable column 25 moves into the next inclined groove 193, the transmission plate 30 is released again and pulls the sliding plate 26 to move, realizing the reciprocating movement of the sliding plate 26.

[0044] The movable plate 21 slides in the opposite direction and drives the stretching roller 24 to reset. The movable column 25 moves along the horizontal groove C, and the stretching roller 24 cannot contact the reflective film, enabling the movement of the reflective film to move the unstretched part into the protection box 1.

[0045] As described above, only the specific implementation manners of the present disclosure are provided, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A reflective film production stretching device, including a protective box, characterized in that: Also includes: The top of described sliding panel also is provided with an interlocking structure, and the interlocking structure is, for example, that interlocking plates are provided with forgings and are convenient to use and can be used as sliding panels on a front surface of the sliding panel. A pressure roller is provided on both sides of the outside of the protective box, a support frame is provided inside the support frame, a pressure roller for fixing the reflective film is provided outside the support rod, a support plate is provided outside the movable plate, a movable column is provided on the support plate, a guide plate is provided inside the protective box, a guide groove is provided on the guide plate, an inclined groove and a spring are provided inside the guide groove, and one end of the movable column penetrates into the guide groove and slides with it; A driving mechanism is connected to the movable plate. The driving mechanism drives the movable plate and the stretching roller to slide left and right. The stretching roller stretches the reflective film by squeezing it. The transmission plate drives the rotating wheel to rotate through the engagement of the rack and the gear groove. The rotating wheel drives the sliding plate to move by cooperating with the connecting rope. The sliding plate flattens the reflective film by cooperating with the rotating cylinder.

2. The reflective film production and stretching equipment according to claim 1, characterized in that: The driving mechanism includes a screw, a driving block and a motor. A transmission groove is provided on the movable plate, and a driving block is provided between the two transmission grooves. A limit block is provided on the side wall of the driving block. The limit block is slidably arranged inside the protective box. A motor is provided inside the protective box. The rotating end of the motor is connected to the screw, and a screw nut that cooperates with the screw is provided on the limit block.

3. The reflective film production and stretching equipment according to claim 1, characterized in that: A pressure plate is slidably provided inside the fixed cylinder, a top plate is provided at one end of the pressure plate, and a plurality of grooves matching the pressure plate are provided on the movable plate.

4. The reflective film production and stretching equipment according to claim 1, characterized in that: Mounting blocks are provided on both sides of the exterior of the protection box. A transmission frame is slidably provided inside the mounting blocks. The bottom of the transmission frame contacts the pressure roller. A telescopic spring is sleeved on the exterior of the transmission frame.

5. The reflective film production and stretching equipment according to claim 4, characterized in that: A guide rail is provided on the top of the protection box, and movable blocks are slidably provided on both sides of the outside of the guide rail, and the movable blocks are in contact with the top of the transmission frame.

6. The reflective film production and stretching equipment according to claim 5, characterized in that: A threaded rod is provided inside the guide rail, a threaded sleeve matched with the threaded rod is provided inside the movable block, a driving motor is provided inside the guide rail, and a gear set is provided between the driving motor and the threaded rod.

7. The reflective film production and stretching equipment according to claim 1, characterized in that: Rotating gears are arranged on both sides of the outside of the support frame, a sliding frame is arranged on the outside of the support rod, and gear teeth meshing with the rotating gears are arranged on the sliding frame.

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