Reflecting film production stretching equipment

Abstract

The invention discloses reflective film production stretching equipment, and relates to the technical field of reflective film production, the reflective film production stretching equipment comprises a protection box, movable plates are arranged in the protection box, square grooves are formed in the sides, close to each other, of the two movable plates, stretching rollers are fixedly arranged in the square grooves, and sliding plates are slidably arranged in the square grooves; a rotating wheel is arranged on the side wall of the movable plate, a connecting rope is arranged on the rotating wheel, the sliding ring is arranged outside the stretching roller in a sliding mode, a mounting plate is arranged outside the sliding ring, a fixing cylinder is arranged on the mounting plate, a supporting cylinder is arranged at one end of the fixing cylinder, and the stretching roller slides left and right and stretches a reflecting film. And a transmission plate drives a rotating wheel to rotate through meshing of a rack and a gear groove, the rotating wheel drives a sliding plate to move in a mode of being matched with a connecting rope, the sliding plate flattens the reflecting film in a mode of being matched with a rotating cylinder, and the stretching effect of the stretching equipment is guaranteed.

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 an all-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. Existing stretching devices consist of two sets of stretching rollers, with a relatively simple internal structure and unable to level the stretched reflective film. Defects such as being too tight or wrinkled easily occur in the reflective film, affecting 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 solution: A stretching device for reflective film production, including a protective box, and further including: Stretching rollers. 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. 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. One end of the limiting plate is slidably provided with a transmission plate. 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; Pressing roller, support frames are arranged on both outer sides of the protective box, a support rod is arranged inside the support frame, a pressing roller for fixing the reflective film is arranged outside the support rod, a support plate is arranged outside the movable plate, a movable column is arranged on the support plate, a guiding plate is arranged inside the protective box, a guiding groove is opened on the guiding plate, an inclined groove and an elastic sheet are arranged inside the guiding groove, and one end of the movable column penetrates into the guiding groove and is slidably matched with the guiding groove; 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.

[0006] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions: In an optional solution: the driving mechanism includes a lead screw, a driving block and a motor, a transmission groove is opened on the movable plate, a driving block is arranged between the two transmission grooves, a limiting block is arranged on the side wall of the driving block, the limiting block is slidably arranged inside the protective box, a motor is arranged inside the protective box, the rotating end of the motor is connected with a lead screw, and a lead screw nut matched with the lead screw is arranged on the limiting block.

[0007] In an optional solution: a pressing plate is slidably arranged inside the fixed cylinder, a top plate is arranged at one end of the pressing plate, and a plurality of grooves matched with the pressing plate are opened on the movable plate.

[0008] In an optional solution: mounting blocks are arranged on both outer sides of the protective box, a transmission frame is slidably arranged inside the mounting block, the bottom of the transmission frame is in contact with the pressing roller, and a telescopic spring is sleeved outside the transmission frame.

[0009] In an optional solution: guide rails are arranged on the top of the protective box, movable blocks are slidably arranged on both outer sides of the guide rails, and the movable blocks are in contact with the top ends of the transmission frames.

[0010] In an optional solution: a threaded rod is arranged inside the guide rail, a threaded sleeve matched with the threaded rod is arranged inside the movable block, a driving motor is arranged inside the guide rail, and a gear set is arranged between the driving motor and the threaded rod.

[0011] In an optional solution: rotating gears are arranged on both outer sides of the support frame, a sliding frame is arranged outside the support rod, and teeth meshing with the rotating gears are arranged on the sliding frame.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The stretching equipment for producing reflective films drives the movable plate and the stretching roller to slide left and right through a driving mechanism. Two sets of pressure rollers approach each other and fix the reflective film. The stretching roller slides left and right to stretch 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 wrinkles on the surface of the reflective film during processing and ensuring the stretching effect of the stretching equipment. Brief Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the stretching equipment for producing reflective films.

[0014] Figure 2 It is a front sectional view of the protective box in the stretching equipment for producing reflective films.

[0015] Figure 3 It is a rear sectional view of the protective box in the stretching equipment for producing reflective films.

[0016] Figure 4 It is a schematic structural diagram of the interior of the protective box in the stretching equipment for producing reflective films.

[0017] Figure 5 It is a sectional view of the movable plate in the stretching equipment for producing reflective films.

[0018] Figure 6 It is a schematic structural diagram of the fixed cylinder in the stretching equipment for producing reflective films.

[0019] Figure 7 It is a sectional view of the fixed cylinder in the stretching equipment for producing reflective films.

[0020] Figure 8 It is a schematic structural diagram of the fixed plate in the stretching equipment for producing reflective films.

[0021] Figure 9 It is a schematic structural diagram of the guide plate in the stretching equipment for producing reflective films.

[0022] Figure 10 It is for the stretching equipment for producing reflective films Figure 1 An enlarged view of part E therein.

[0023] 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 - pressing roller, 11 - sliding frame, 12 - rotating gear, 13 - threaded rod, 14 - threaded sleeve, 15 - drive motor, 16 - gear set, 17 - fixed plate, 171 - sliding groove, 18 - motor, 19 - guide plate, 191 - guide groove, 192 - elastic sheet, 193 - inclined groove, 20 - limit block, 21 - movable plate, 211 - square groove, 212 - transmission groove, 213 - groove, 22 - support plate, 23 - drive block, 231 - lead screw, 24 - stretching roller, 25 - movable column, 26 - sliding plate, 261 - sliding ring, 27 - connecting rope, 28 - rotating wheel, 281 - gear groove, 29 - limit post, 30 - transmission plate, 31 - limit 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

[0024] In order to make the objectives, technical solutions and advantages of the present invention clearer, 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.

[0025] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0026] 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: The stretching roller 24, a cabinet door 2 is arranged on the front side of the protection box 1, an observation window and control buttons are arranged on the cabinet door 2, the A side of the protection box 1 is the front side, the B side is the back side, two groups of movable plates 21 are vertically arranged inside the protection box 1, square grooves 211 are formed on one side of the two movable plates 21 close to each other, the stretching roller 24 is fixedly arranged inside the square groove 211, the reflective film passes through the protection 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 two ends of the sliding plate 26 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, a mounting plate 35 is horizontally arranged outside the sliding ring 261, a fixed cylinder 34 is fixedly arranged on the mounting 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, a plurality of flattening plates 362 are arranged outside the rotating cylinder 361, the flattening plates 362 are elastically mounted on the rotating cylinder 361, the two sliding plates 26 move horizontally and drive the rotating cylinder 361 to move, the flattening plates 362 on the rotating cylinder 361 squeeze the reflective film downward to flatten the reflective film and prevent wrinkles from occurring on it, a fixing plate 17 is fixedly arranged inside the protection box 1, and a sliding groove 171 is formed on the fixing plate 17; 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 matching with the rack 32 are vertically arranged on the fixing plate 17; A support plate 22 is arranged outside the movable plate 21, a movable column 25 is arranged on the support plate 22, a guide plate 19 is fixedly arranged inside the protection box 1, a guide groove 191 is formed on the guide plate 19, an inclined groove 193 and an elastic piece 192 are arranged inside the guide groove 191, one end of the movable column 25 penetrates into the guide groove 191 and is slidably matched with it. The structure of the guide groove 191 is as Figure 9As shown, the moving directions of the two sets of movable columns 25 are as Figure 9 shown. The guiding groove 191 is composed of two sets of horizontal grooves CD. The movable column 25 is slidably arranged inside the guiding groove 191. When the two movable plates 21 move along the Figures 2 - 4 indicated 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 to release 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 damaged due to excessive stretching. 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 opposite direction, at this time, the movable column 25 moves along the horizontal groove C, and the stretching roller 24 cannot contact the reflective film, so that the reflective film can be moved, and the unstretched part can be moved into the protection box 1, which is convenient for the next round of stretching of the reflective film. The guiding groove 191 is provided with a spring piece 192. The spring piece 192 is elastically installed inside the guiding plate 19 through a spring, and can limit the movable column 25 so that the movable column 25 can only move along the Figure 9 indicated direction; The driving mechanism 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 the reflective film by squeezing it. The transmission plate 30 drives the rotating wheel 28 to rotate through the engagement 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.

[0027] As Figures 1 - 4 shown, as a preferred embodiment of the present invention, the driving mechanism includes a lead screw 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 sets 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 with a lead screw 231. A lead screw nut matched with the lead screw 231 is arranged on the limiting block 20. The motor 18 drives the lead screw 231 to rotate, and the lead screw 231 drives the driving block 23 and the movable plate 21 to move left and right.

[0028] As Figures 6 - 8As shown, as a preferred embodiment of the present invention, a pressing plate 33 is slidably disposed 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 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 expand and contract along the inner wall of the fixed cylinder 34. The top plate 331 presses the leveling plate 362, causing the rotating cylinder 361 to rotate, and the reflection film is leveled by the leveling plate 362.

[0029] As Figures 1 - 2 shown, as a preferred embodiment of the present invention, mounting blocks 6 are provided on both outer sides of the protective box 1. A transmission frame 7 is slidably disposed inside the mounting block 6. The bottom of the transmission frame 7 is in contact with the pressure 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 pressure roller 10 is in the initial position.

[0030] As Figures 1 - 2 shown, as a preferred embodiment of the present invention, a guide rail 4 is provided on the top of the protective box 1. Movable blocks 5 are slidably disposed on both outer sides of the guide rail 4. The movable blocks 5 are in contact with the top ends of the transmission frames 7. The two movable blocks 5 move away from each other and squeeze the transmission frames 7. The transmission frames 7 drive the two pressure rollers 10 in the vertical direction to approach each other.

[0031] As Figures 1 - 2 shown, as a preferred embodiment of the present invention, a threaded rod 13 is rotatably disposed inside the guide rail 4. A threaded sleeve 14 matching the threaded rod 13 is provided inside the movable block 5. A drive motor 15 is provided inside the guide rail 4. A gear set 16 is provided between the drive motor 15 and the threaded rod 13. The drive motor 15 drives the threaded rod 13 to rotate. The threaded rod 13 drives the movable block 5 to move horizontally through the threaded sleeve 14.

[0032] As Figure 1 shown, as a preferred embodiment of the present invention, support frames 9 are provided on both outer sides of the protective box 1. Sliding frames 11 are slidably disposed on both sides of the support frame 9. A support rod 3 is fixedly arranged between the two sliding frames 11. A pressure roller 10 is fixedly arranged outside the support rod 3. Rotating gears 12 are provided on both outer sides of the support frame 9. Teeth meshing with the rotating gears 12 are provided outside 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. The sliding frames 11 drive the pressure roller 10 to move, and the passing reflection film can be squeezed and fixed.

[0033] In the above embodiments of the present invention, a stretching device for producing a reflective film is provided. The reflective film penetrates into the interior of the protective box 1 and is located between two stretching rollers 24. The transmission frame 7 drives the two pressure rollers 10 to approach each other to squeeze and fix the reflective film. The motor 18 drives the lead screw 231 to rotate, and the lead screw 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 reflective 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 reflective film to release the reflective film. At this time, the movable plate 21 drives the externally arranged 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 reflective film through the leveling plate 362. That is, every time the movable column 25 moves into the inclined groove 193, the transmission plate 30 will be released, so that the sliding plate 26 moves horizontally and levels the reflective film through the leveling plate 362. In order to ensure the leveling effect of the reflective 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., the position shown in Figure 8 ). 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, and the transmission plate 30 is released again and pulls the sliding plate 26 to move, realizing the reciprocating movement of the sliding plate 26.

[0034] 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. The stretching roller 24 cannot contact the reflective film, and the reflective film can be moved to move the unstretched part into the protective box 1.

[0035] The above is only the specific implementation manner of the present disclosure, 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 be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A stretching device for producing a reflective film, comprising a protective box, characterized in that, Further included are: A stretching roller. An activity plate is arranged inside the protection box. Square grooves are formed on one side of each of the two activity plates close to each other. A stretching roller is fixedly arranged inside the square groove. A sliding plate is slidably arranged inside the square groove. A rotating wheel is arranged on the side wall of the activity plate. A connecting rope is arranged on the rotating wheel. Both ends of the connecting rope are connected to the sliding plate. A sliding ring is arranged at the bottom of the sliding plate. The sliding ring is slidably arranged outside the stretching roller. An installation plate is arranged outside the sliding ring. A fixed cylinder is arranged on the installation plate. A support cylinder is arranged at one end of the fixed cylinder. A rotating cylinder is arranged inside the support cylinder. A plurality of leveling plates are arranged outside the rotating cylinder. A fixed plate is arranged inside the protection box. A sliding groove is formed on the fixed plate. A limiting plate is arranged outside the activity plate. One end of the limiting plate is slidably provided with a transmission plate. 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 formed on the rotating wheel. A plurality of limiting columns cooperating with the rack are arranged on the fixed plate; A pressing roller. Support frames are arranged on both sides outside the protection box. A support rod is arranged inside the support frame. A pressing roller for fixing the reflective film is arranged outside the support rod. A support plate is arranged outside the activity plate. An activity column is arranged on the support plate. A guide plate is arranged inside the protection box. A guide groove is formed on the guide plate. An inclined groove and an elastic sheet are arranged inside the guide groove. One end of the activity column penetrates into the guide groove and is slidably matched with the guide groove; A driving mechanism, which is connected to the activity plate. The driving mechanism drives the activity 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 meshing of the rack and the gear groove. The rotating wheel drives the sliding plate to move through the cooperation with the connecting rope. The sliding plate levels the reflective film through the cooperation with the rotating cylinder.

2. The stretching device for producing a reflective film according to claim 1, wherein, The driving mechanism includes a lead screw, a driving block and a motor. A transmission groove is formed on the activity plate. A driving block is arranged between the two transmission grooves. A limiting block is arranged on the side wall of the driving block. The limiting block is slidably arranged inside the protection box. A motor is arranged inside the protection box. A lead screw is connected to the rotating end of the motor. A lead screw nut cooperating with the lead screw is arranged on the limiting block.

3. The stretching device for producing a reflective film according to claim 1, wherein A pressing plate is slidably arranged inside the fixed cylinder. A top plate is arranged at one end of the pressing plate. A plurality of grooves cooperating with the pressing plate are formed on the activity plate.

4. The stretching device for producing a reflective film according to claim 1, wherein Installation blocks are arranged on both sides outside the protection box. A transmission frame is slidably arranged inside the installation block. The bottom of the transmission frame is in contact with the pressing roller. A telescopic spring is sleeved outside the transmission frame.

5. The stretching device for producing a reflective film according to claim 4, characterized in that, A guide rail is arranged on the top of the protection box. Activity blocks are slidably arranged on both sides outside the guide rail. The activity blocks are in contact with the top ends of the transmission frames.

6. The stretching device for producing a reflective film according to claim 5, wherein, A threaded rod is arranged inside the guide rail. A threaded sleeve cooperating with the threaded rod is arranged inside the activity block. A driving motor is arranged inside the guide rail. A gear set is arranged between the driving motor and the threaded rod.

7. The stretching device for producing a reflective film according to claim 1, characterized in that, Rotating gears are arranged on both outer sides of the support frame, a sliding frame is arranged on the outer side of the support rod, and teeth meshing with the rotating gears are arranged on the sliding frame.

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