Conveying device and method for light guide plate production

Abstract

The invention relates to the technical field of light guide plate conveying, and discloses a light guide plate production conveying device and method.The light guide plate production conveying device comprises a conveying line used for conveying a light guide plate, a supporting rod is arranged on the outer side of the conveying line, a top plate is fixed to the top of the supporting rod, and two sets of sliding blocks capable of conducting horizontal reciprocating motion are symmetrically arranged below the top plate; a guide rod is fixedly arranged on the surface of the sliding block, moving seats are arranged at the two ends of the guide rod in a sliding mode, suction cups capable of moving up and down are fixed to the lower surfaces of the moving seats, a guide rod is fixed to the top of each moving seat, and a guide groove is formed in the lower surface of the top plate. According to the technical scheme, when the light guide plate is subjected to film tearing, the two corners of the protective film are adsorbed at the same time through the two sets of suction cups, the light guide plate with the large width can be subjected to film tearing treatment conveniently, the two corners of the protective film are made to be close to each other and then move synchronously, and therefore the possibility of breakage during film tearing is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of light guide plate conveying, and in particular to a conveying device and method for producing light guide plates. Background Art

[0002] A light guide plate (LGP) is a thin, transparent plastic material made of optical-grade acrylic or polycarbonate. Its function is to evenly distribute light from the backlight across the entire display panel, ensuring uniform brightness and brightness across the entire display. During LGP production, a protective film is applied to the LGP surface to prevent scratches and dust during storage and transportation.

[0003] The production and transportation process of light guide plates generally includes the following process flows: light guide plate loading, film tearing, cutting and polishing, film laminating, and unloading and stacking. In the film tearing process of light guide plates, the traditional film tearing process generally uses a suction cup to absorb one corner of the light guide plate, and then lifts one corner and moves in one direction until the entire protective film is torn off from the light guide plate. However, for light guide plates with a larger width, the above-mentioned film tearing process is used. During the film tearing process, the protective film is easily torn off at the end farther from the suction cup due to the large pulling distance, which makes it impossible to fully tear off the protective film. Summary of the Invention

[0004] The present invention provides a conveying device and method for the production of light guide plates, which simultaneously adsorbs the two corners of the protective film through two groups of suction cups, making it convenient to tear off the film of light guide plates with a larger width, and making the two corners of the protective film close to each other, and then moving synchronously, thereby reducing the possibility of breakage during film tearing. It solves the problem mentioned in the above background technology that for light guide plates with a larger width, the end farther away from the suction cup is prone to being torn off during the film tearing process due to the large pulling distance, making it impossible to fully tear off the protective film.

[0005] The present invention provides the following technical solution: a conveying device for producing light guide plates, comprising a conveying line for conveying light guide plates, a support rod is provided on the outside of the conveying line, a top plate is fixed on the top of the support rod, two groups of sliders that can perform horizontal reciprocating motion are symmetrically arranged below the top plate, a guide rod is fixed on the surface of the slider, a movable seat is slidably provided at both ends of the guide rod, a suction cup that can move up and down is fixed on the lower surface of the movable seat, a guide rod is fixed on the top of the movable seat, a guide groove is provided on the lower surface of the top plate, and the suction cup slides along the guide groove through the guide rod to tear off the protective film on the surface of the light guide plate.

[0006] As an optional solution to the conveying device for producing light guide plates described in the present invention, a fixed block is fixed to the surface of the support rod, a servo motor is fixed to the surface of the fixed block, a reciprocating screw is fixed to the output end of the servo motor, the slider is threadedly connected to the circumference of the reciprocating screw, an electric push rod is fixed to the lower surface of the movable seat, and the output end of the electric push rod is fixed to the suction cup.

[0007] As an optional solution of the conveying device for producing light guide plates of the present invention, the guide groove includes an inclined groove and a vertical groove that are connected to each other.

[0008] As an optional solution of the conveying device for producing light guide plates described in the present invention, a movable rod that can be raised and lowered is slidably provided on the movable seat, a lifting seat is fixed at the bottom end of the movable rod, a bonding plate is slidably provided on one side surface of the lifting seat, a positioning plate is fixed on the surface of the lifting seat, a rotating shaft is rotatably provided on the positioning plate, a pressure roller is fixed at the bottom end of the rotating shaft, the rotating shaft passes through the movable seat and is slidably connected to the movable seat, a gear is fixed on the top end of the rotating shaft, and a tooth plate for engaging with the gear is fixed on the lower surface of the top plate.

[0009] As an optional solution of the conveying device for producing light guide plates described in the present invention, a first core rod is provided for sliding inside the guide rod, a slide is fixed to the bottom end of the first core rod, the slide is slidably provided in the movable seat, a first spring is fixed between the slide and the movable rod, a first convex plate is fixed on the surface of the movable rod, the first convex plate is slidably provided in the movable seat, a second spring is fixed between the first convex plate and the inner wall of the movable seat, a second core rod is provided for sliding inside the movable rod and the lifting seat, the top of the second core rod is fixed to the slide, and the bottom end of the second core rod is provided with an ejection component for pushing the bonding plate out from the inside of the lifting seat.

[0010] As an optional solution to the conveying device for producing light guide plates described in the present invention, a first sliding protrusion is fixed to the end of the first core rod, and a track groove for sliding of the first sliding protrusion is provided on the inner wall of the guide groove, and the track groove includes a first horizontal portion, a first descending portion, a second descending portion, a second horizontal portion and an ascending portion connected from left to right.

[0011] As an optional solution to the conveying device for producing light guide plates described in the present invention, the ejection assembly includes an ejection rod fixed to the bonding plate, the ejection rod is slidably connected to the second core rod, a second sliding protrusion is fixed to the end of the ejection rod, and a contact groove for sliding of the second sliding protrusion is provided on the inner wall of the second core rod.

[0012] As an optional solution to the conveying device for producing light guide plates described in the present invention, the ejection assembly includes an ejection rod fixed to the bonding plate, a first interference block is fixed to the end of the ejection rod, a second interference block in contact with the first interference block is fixed to the end of the second core rod, a second convex plate is fixed to the surface of the bonding plate, and a third spring is fixed between the second convex plate and the lifting seat.

[0013] As an optional solution for the conveying device for producing light guide plates described in the present invention, an air guide groove is provided inside the bonding plate, an adsorption hole connected to the air guide groove is provided on the surface of the bonding plate, an air cylinder is fixed on the surface of the bonding plate, the air cylinder is slidably arranged inside the lifting seat, an air cavity connected to the air guide groove is provided in the air cylinder, a piston plate is slidably arranged in the air cavity, a pull rod is fixed inside the lifting seat, the end of the pull rod is fixed to the piston plate, a ventilation groove is provided inside the lifting seat, and a through hole for connecting the ventilation groove with the air cavity is provided on the air cylinder.

[0014] As an optional solution of the conveying device for producing light guide plates according to the present invention, a conveying method for producing light guide plates includes the following steps: S1. The light guide plate is transported through the conveyor line. When the light guide plate is transported to the bottom of the top plate, the transport is stopped and the light guide plate is fixed; S2. The electric push rod pushes the suction cup downward to the edge of the protective film and absorbs the edge of the protective film. Then the electric push rod resets, causing the suction cup to lift the edge of the protective film. S3. The servo motor drives the reciprocating screw to rotate, causing the slider to slide on the reciprocating screw. The slider drives the guide rod to move, which in turn drives the movable seat to move. The guide rod slides in the guide groove, causing the movable seat to move along the guide groove, causing the suction cup to first move along the trajectory of the inclined groove. S4. As the suction cup moves along the track of the inclined groove, the guide rod drives the first core rod to slide, which in turn drives the first sliding protrusion to slide along the track groove. This causes the first sliding protrusion to move the first core rod downward, which in turn drives the movable rod, the lifting seat, and the pinch roller downward until one side of the protective film lifted by the suction cup is positioned between the lifting seat and the pinch roller. S5. The ejector assembly pushes the laminating plate out of the lifting base, causing the pinch roller to press the protective film against the laminating plate. As the suction cup moves along the inclined groove, the gear engages with the toothed plate, causing the gear to rotate the shaft, which in turn drives the compacting roller. The compacting roller pushes one side of the protective film toward the suction cup, completely tearing off one side of the protective film. S6. The suction cup moves along the trajectory of the vertical groove to completely remove the protective film. After removal, the reciprocating screw continues to rotate, causing the slider to drive the suction cup back to its initial state. S7. The conveyor line moves and transports the light guide plate to the next station for subsequent processing.

[0015] The present invention has the following beneficial effects: 1. In the conveying device and method for producing light guide plates, when tearing the film of the light guide plate, the two corners of the protective film are adsorbed simultaneously by two groups of suction cups, and the slider slides on the reciprocating screw rod, driving the movable seat to move along the track of the guide groove, so that the two groups of suction cups drive the two corners of the protective film to move inward at the same time, thereby avoiding the situation where the protective film has a large pulling force during the tearing process, thereby facilitating the tearing of the film for light guide plates with a larger width. At the same time, the two corners of the protective film first move closer to each other with the suction cups, and then move synchronously, making the tearing process smoother, thereby reducing the possibility of breakage during tearing.

[0016] When the guide rod is moved along the inclined groove of the guide groove, the guide rod drives the first core rod to move, and the first core rod drives the first sliding protrusion to slide along the track groove, so that the first core rod can drive the movable rod to move downward, and the movable rod moves downward to drive the lifting seat to move downward, and the lifting seat drives the pressing roller to move downward synchronously, so that the side of the lifted protective film can be located between the pressing roller and the lifting seat, and then the first core rod continues to move downward, pushing the bonding plate out of the lifting seat, so that the bonding plate cooperates with the pressing roller to press the protective film, and then the gear and the tooth plate are engaged, so that the gear drives the rotating shaft to rotate, and the rotating shaft drives the pressing roller to rotate, so that the pressing roller can move the side of the protective film away from the suction cup to the side close to the suction cup, so that it is convenient to completely tear off the protective film between the two groups of suction cups from the light guide plate before the suction cup slides along the vertical portion, thereby further reducing the situation where the protective film is torn off during the film tearing process.

[0017] 3. In the conveying device and method for producing light guide plates, when the laminating plate is moved out from the inside of the lifting seat, the laminating plate drives the air cylinder to move, so that the piston plate moves inside the air cylinder, and the air cylinder performs air suction processing, and transmits air through the air guide groove, so that negative pressure is generated at the adsorption hole. When the laminating plate moves toward the nip roller, the negative pressure is utilized to enable the adsorption hole to stably adsorb the protective film on the surface of the laminating plate, avoiding the protective film from moving out from between the nip roller and the laminating plate, so that the laminating plate and the nip roller can press the protective film more accurately, ensuring the conveyance of the protective film by the nip roller, thereby further improving the film tearing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 For the present invention Figure 2 Schematic diagram of the structure from another perspective of the part.

[0021] Figure 4 For the present invention Figure 3 Enlarged view of point B in the middle.

[0022] Figure 5 It is a bottom view structural diagram of the top plate portion of the present invention.

[0023] Figure 6 For the present invention Figure 5 Enlarged view of point C in the middle.

[0024] Figure 7 It is a structural schematic diagram of the bottom of the top plate of the present invention.

[0025] Figure 8 It is a planar cross-sectional view of the top plate, movable seat and lifting seat in the present invention.

[0026] Figure 9 For the present invention Figure 8 Enlarged view of point D in the middle.

[0027] Figure 10 This is a top view of the structure of the lifting seat of the present invention.

[0028] Figure 11 It is a structural schematic diagram of another technical solution of the ejection assembly in the present invention.

[0029] Figure 12 Schematic diagram of the film tearing principle in Example 1 of the present invention.

[0030] Figure 13 This is a schematic diagram of the principle of film tearing in Example 3 of the present invention.

[0031] In the figure: 1. conveyor line; 2. support rod; 3. top plate; 4. slider; 5. guide rod; 6. movable seat; 7. suction cup; 8. guide rod; 9. guide groove; 901. inclined groove; 902. vertical groove; 10. fixed block; 11. servo motor; 12. reciprocating screw; 13. movable rod; 14. lifting seat; 15. laminating plate; 16. positioning plate; 17. rotating shaft; 18. pressure roller; 19. gear; 20. tooth plate; 21. first core rod; 22. slide plate; 23. first spring; 24. first convex plate; 25. second spring; 26. second core rod; 27. First sliding protrusion; 28. Track groove; 281. First horizontal portion; 282. First descending portion; 283. Second descending portion; 284. Second horizontal portion; 285. Rising portion; 29. Ejector rod; 30. Second sliding protrusion; 31. Interference groove; 32. First interference block; 33. Second interference block; 34. Second convex plate; 35. Third spring; 36. Air guide groove; 37. Adsorption hole; 38. Air cylinder; 39. Air cavity; 40. Piston plate; 41. Pull rod; 42. Vent groove; 43. Through hole; 44. Light guide plate; 45. Protective film; 46. Electric push rod. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] For example 1, please refer to Figures 1-13 A conveying device for producing light guide plates includes a conveying line 1 for conveying light guide plates 44, a support rod 2 is provided on the outside of the conveying line 1, a top plate 3 is fixed on the top of the support rod 2, two groups of sliders 4 that can perform horizontal reciprocating motion are symmetrically provided below the top plate 3, a guide rod 5 is fixed on the surface of the slider 4, a movable seat 6 is slidably provided at both ends of the guide rod 5, a suction cup 7 that can move up and down is fixed on the lower surface of the movable seat 6, a guide rod 8 is fixed on the top of the movable seat 6, a guide groove 9 is opened on the lower surface of the top plate 3, and the suction cup 7 slides along the guide groove 9 through the guide rod 8 to tear off the protective film 45 on the surface of the light guide plate 44; A fixed block 10 is fixed to the surface of the support rod 2, a servo motor 11 is fixed to the surface of the fixed block 10, a reciprocating screw 12 is fixed to the output end of the servo motor 11, the slider 4 is threadedly connected to the circumference of the reciprocating screw 12, an electric push rod 46 is fixed to the lower surface of the movable seat 6, and the output end of the electric push rod 46 is fixed to the suction cup 7; The guide groove 9 includes an inclined groove 901 and a vertical groove 902 which are connected to each other.

[0034] In this technical solution, the light guide plate 44 is first transported by the conveyor line 1. When the light guide plate 44 is transported to the bottom of the top plate 3, the transport is stopped and the light guide plate 44 is fixed. The light guide plate 44 is fixed by a positioning structure in the prior art. The light guide plate 44 is positioned at a specific position by clamping. The positioning structure is not an innovation in this application and is not described in detail. After the light guide plate 44 is transported to a specific position, the suction cup 7 is pushed downward by the electric push rod 46 to make the suction cup 7 fit the edge and corner surface of the protective film 45. The protective film 45 is adsorbed by the negative pressure adsorption effect, and then the electric push rod 46 is used to push the suction cup 7 downward to make the suction cup 7 fit the edge and corner surface of the protective film 45. The push rod 46 is reset, causing the suction cup 7 to move upward and simultaneously lifting a corner of the protective film 45. The servo motor 11 is started to drive the reciprocating screw 12 to rotate, causing the slider 4 to slide on the reciprocating screw 12. The slider 4 drives the guide rod 5 to move. Due to the restriction of the guide groove 9 on the guide rod 8, the guide rod 5 drives the moving seat 6 to move along the track of the guide groove 9, causing the suction cup 7 to first move along the track of the inclined groove 901, tearing off a corner of the protective film 45, and then moving along the track of the vertical groove 902, pulling the protective film 45 down, until the protective film 45 is completely torn off from the light guide plate 44; In the present technical solution, for the light guide plate 44 with a larger width, the structure of the suction cup 7 is provided with two groups, which are respectively arranged at the two corners of the light guide plate 44, so that when the reciprocating screw 12 rotates, it can simultaneously drive the two groups of suction cups 7 to simultaneously adsorb the two corners of the protective film 45, and complete the tearing of the two corners of the protective film 45 at the same time, and then pull the two corners of the protective film 45 to move at the same time, so as to make it more convenient to tear off the protective film 45.

[0035] In the second embodiment, when the suction cup 7 drives the corner of the protective film 45 to move inward, due to the wide width of the light guide plate 44, the suction cup 7 cannot completely tear off the protective film 45 between the two corners from the edge of the light guide plate 44 before moving along the vertical groove 902, that is, there is a section ab of the protective film 45 that is still in contact with the edge of the light guide plate 44. When the suction cup 7 moves along the vertical groove 902 to tear off the protective film 45, the pulling force between the suction cup 7 and the protective film 45 at point a and the other group of suction cups 7 and the protective film 45 at point b is large, resulting in the protective film 45 at this point being easily torn off when being torn off, thereby affecting the complete tearing off of the protective film 45. To address this problem, the present embodiment is an improvement made on the basis of the first embodiment. For details, please refer to Figures 1-13, a movable rod 13 that can be lifted and lowered is slidably provided on the movable seat 6, a lifting seat 14 is fixed at the bottom end of the movable rod 13, a laminating plate 15 is slidably provided on one side surface of the lifting seat 14, a positioning plate 16 is fixed on the surface of the lifting seat 14, a rotating shaft 17 is rotatably provided on the positioning plate 16, a pressing roller 18 is fixed at the bottom end of the rotating shaft 17, the rotating shaft 17 passes through the movable seat 6 and is slidably connected to the movable seat 6, a gear 19 is fixed to the top of the rotating shaft 17, and a tooth plate 20 for engaging with the gear 19 is fixed to the lower surface of the top plate 3; A first core rod 21 is provided for sliding inside the guide rod 8, a slide plate 22 is fixed to the bottom end of the first core rod 21, the slide plate 22 is slidably provided in the movable seat 6, a first spring 23 is fixed between the slide plate 22 and the movable rod 13, a first convex plate 24 is fixed to the surface of the movable rod 13, the first convex plate 24 is slidably provided in the movable seat 6, a second spring 25 is fixed between the first convex plate 24 and the inner wall of the movable seat 6, a second core rod 26 is provided for sliding inside the movable rod 13 and the lifting seat 14, the top of the second core rod 26 is fixed to the slide plate 22, and the bottom end of the second core rod 26 is provided with an ejection assembly for pushing the laminating plate 15 out of the lifting seat 14; A first sliding protrusion 27 is fixed to the end of the first core rod 21. A track groove 28 for the first sliding protrusion 27 to slide is formed on the inner wall of the guide groove 9. The track groove 28 includes a first horizontal portion 281, a first descending portion 282, a second descending portion 283, a second horizontal portion 284 and a rising portion 285 that are connected from left to right. The ejection assembly includes an ejection rod 29 fixed to the bonding plate 15, the ejection rod 29 is slidably connected to the second core rod 26, a second sliding protrusion 30 is fixed to the end of the ejection rod 29, and an interference groove 31 for the second sliding protrusion 30 to slide is opened on the inner wall of the second core rod 26.

[0036] In the present technical solution, when the guide rod 8 slides along the inclined groove 901, the guide rod 8 drives the first core rod 21 to slide, and the first core rod 21 drives the first sliding protrusion 27 to slide along the track groove 28. First, when the first sliding protrusion 27 slides along the first horizontal portion 281, the suction cup 7 has lifted a corner of the protective film 45 and torn it for a distance along the direction of the inclined groove 901, and then continues to tear off the protective film 45 along the inclined groove 901. At this time, the first sliding protrusion 27 first slides along the first descending portion 282, so that the first core rod 21 moves downward, and the first core rod 21 drives the slide plate 22 to move downward. The force that the first spring 23 needs to be compressed is greater than the force that the second spring 25 needs to be compressed. When the slide plate 22 moves downward, it first drives the movable rod 13 to move downward, so that the first convex plate 24 first compresses the second spring 25, so that the second The spring 25 stores force, the movable rod 13 moves downward, driving the lifting seat 14 to move downward, and the lifting seat 14 drives the rotating shaft 17 to move downward through the positioning plate 16, and the rotating shaft 17 moves downward to drive the pinch roller 18 to move downward, so that the pinch roller 18 and the moving seat 6 move downward synchronously, so that the lifted side of the protective film 45 is inserted between the pinch roller 18 and the moving seat 6, and the top of the protective film 45 is higher than the top of the bonding plate 15, and then the first sliding protrusion 27 slides along the second descending portion 283. At this time, the movable rod 13 drops to the lowest position, the position of the movable rod 13 remains unchanged, and the second spring 25 cannot be compressed, so that the first spring 23 begins to be compressed, driving the second core rod 26 to move downward, and the second core rod 26 moves downward to make the ejector rod 29 slide relative to the second core rod 26, and the ejector rod 29 drives the second sliding protrusion 30 to slide along the contact groove 31, as shown in FIG. Figure 8 and Figure 9 As shown, the second sliding protrusion 30 drives the ejection rod 29 to move leftward, and the ejection rod 29 drives the laminating plate 15 to move leftward, pushing the laminating plate 15 out from the inside of the lifting seat 14, so that the laminating plate 15 cooperates with the pressing roller 18 to press the protective film 45, and then the first sliding protrusion 27 slides along the second horizontal portion 284, keeping the laminating plate 15 and the pressing roller 18 pressed against the protective film 45. When the first sliding protrusion 27 just slides along the second horizontal portion 284, the gear 19 engages with the toothed plate 20, causing the gear 19 to rotate. The rotation of the gear 19 drives the rotating shaft 17 to rotate, and the rotation of the rotating shaft 17 drives the pinch roller 18 to rotate, so that the pinch roller 18 conveys the protective film 45. Through the rotation of the pinch roller 18, it is convenient to convey the protective film 45 at a to one side of the suction cup 7, so as to facilitate the tearing off of the protective film 45 from section a to b from the edge of the light guide plate 44. When the suction cup 7 is about to slide along the vertical groove 902, the gear 19 and the tooth plate 20 are disengaged, and the pinch roller 18 no longer rotates, so that the protective film 45 between the two groups of suction cups 7 is kept as close as possible. Figure 13The horizontal state shown in the figure reduces the possibility of the protective film 45 being broken during the process of pulling down and tearing the film; when the protective film 45 is completely torn off, the guide rod 8 slides to the end of the vertical groove 902. At this time, the first sliding protrusion 27 slides along the rising portion 285, causing the bonding plate 15 to shrink into the lifting seat 14, opening the space between the pressing roller 18 and the bonding plate 15, and no longer pressing the protective film 45, thereby facilitating the unloading of the protective film 45 between the two.

[0037] Example 3: This example is another technical solution for ejecting the assembly. For details, please refer to Figures 1-13 The ejection assembly includes an ejection rod 29 fixed to the bonding plate 15, a first contact block 32 fixed to the end of the ejection rod 29, a second contact block 33 fixed to the end of the second core rod 26 in contact with the first contact block 32, a second protruding plate 34 fixed to the surface of the bonding plate 15, and a third spring 35 fixed between the second protruding plate 34 and the lifting seat 14; In this technical solution, if Figure 11 When the second core rod 26 moves downward, the second core rod 26 drives the second interference block 33 to move downward, so that the second interference block 33 interferes with the first interference block 32, prompting the first interference block 32 to move to the left. The first interference block 32 moves to the left, driving the ejection rod 29 to move to the left. The ejection rod 29 moves to the left and drives the bonding plate 15 to move to the left, pushing the bonding plate 15 out of the lifting seat 14. At the same time, the bonding plate 15 drives the second protruding plate 34 to move to the left, compressing the third spring 35, so that the third spring 35 accumulates force, so that when the first interference block 32 loses the interference of the second interference block 33, the force is released by the third spring 35, allowing the bonding plate 15 to reset.

[0038] In the fourth embodiment, during the movement of the bonding plate 15 toward the nip roller 18, since the suction cup 7 continuously tears off the protective film 45, the protective film 45 between the bonding plate 15 and the nip roller 18 may fall off during the movement of the bonding plate 15 toward the nip roller 18, so that the top of the protective film 45 is not higher than the bonding plate 15 or, in severe cases, is directly offset from between the bonding plate 15 and the nip roller 18, so that the bonding plate 15 and the nip roller 18 cannot compactly convey the protective film 45, thereby reducing the film tearing effect. To address this problem, this embodiment is an improvement made on the basis of the second or third embodiment. For details, please refer to Figures 1-13An air guide groove 36 is provided inside the bonding plate 15, and an adsorption hole 37 connected to the air guide groove 36 is provided on the surface of the bonding plate 15. An air cylinder 38 is fixed on the surface of the bonding plate 15, and the air cylinder 38 is slidably arranged inside the lifting seat 14. An air cavity 39 connected to the air guide groove 36 is provided in the air cylinder 38, and a piston plate 40 is slidably arranged in the air cavity 39. A pull rod 41 is fixed inside the lifting seat 14, and the end of the pull rod 41 is fixed to the piston plate 40. A ventilation groove 42 is provided inside the lifting seat 14, and a through hole 43 for connecting the ventilation groove 42 with the air cavity 39 is provided on the air cylinder 38.

[0039] In this technical solution, if Figure 10 As shown, when the bonding plate 15 moves to the left and moves out of the lifting seat 14, the bonding plate 15 drives the air cylinder 38 to move to the left, so that the piston plate 40 moves to the right relative to the air cylinder 38. At this time, air is sucked through the adsorption hole 37, and the gas is sucked into the air cavity 39 through the air guide groove 36. When the adsorption hole 37 is sucking air, a negative pressure is generated at the adsorption hole 37, so that when the bonding plate 15 moves to the left, the protective film 45 can be adsorbed to the surface of the bonding plate 15, so that the protective film 45 first contacts the bonding plate 15, and then the protective film 45 is sucked to the bonding plate 15. After bonding, it moves toward the nip roller 18 together with the bonding plate 15, thereby preventing the protective film 45 from falling off; when the bonding plate 15 continues to move to the left until it is bonded with the nip roller 18, the air cylinder 38 moves to the left, so that the vent groove 42, the through hole 43, the air cavity 39, the air guide groove 36 and the adsorption hole 37 are connected, so that the air pressure is balanced and the adsorption hole 37 no longer generates negative pressure, so that when the nip roller 18 rotates, the protective film 45 on one side can be moved to the other side.

[0040] Example 5: This example is an improvement made on the basis of Example 4. For details, please refer to Figures 1-13 A method for producing a light guide plate 44 comprises the following steps: S1. The light guide plate 44 is transported by the conveyor line 1. When the light guide plate 44 is transported to the bottom of the top plate 3, the transport is stopped and the light guide plate 44 is fixed; S2. The electric push rod 46 pushes the suction cup 7 downward, moves the suction cup 7 to the corner of the protective film 45, and adsorbs the corner of the protective film 45. Then the electric push rod 46 is reset, so that the suction cup 7 lifts the corner of the protective film 45; S3. The servo motor 11 drives the reciprocating screw 12 to rotate, causing the slider 4 to slide on the reciprocating screw 12. The slider 4 drives the guide rod 5 to move, and the guide rod 5 drives the movable seat 6 to move. The guide rod 8 slides in the guide groove 9, causing the movable seat 6 to move along the direction of the guide groove 9, causing the suction cup 7 to first move along the trajectory of the inclined groove 901; S4. As the suction cup 7 moves along the track of the inclined groove 901, the guide rod 8 drives the first core rod 21 to slide, and the first core rod 21 drives the first sliding protrusion 27 to slide along the track groove 28, so that the first sliding protrusion 27 drives the first core rod 21 to move downward. The downward movement of the first core rod 21 drives the movable rod 13, the lifting seat 14, and the pinch roller 18 to move downward until one side of the protective film 45 that lifts the suction cup 7 is located between the lifting seat 14 and the pinch roller 18. S5. The laminating plate 15 is pushed out of the lifting base 14 by the ejector assembly, causing the pinch roller 18 to press the protective film 45 against the laminating plate 15. Then, as the suction cup 7 moves along the track of the inclined groove 901, the gear 19 engages with the toothed plate 20, causing the gear 19 to rotate the rotating shaft 17, which in turn rotates the compacting roller. The compacting roller conveys one side of the protective film 45 toward the suction cup 7, completely tearing off one side of the protective film 45. S6. The suction cup 7 moves along the trajectory of the vertical groove 902 to remove the entire protective film 45. After removal, the reciprocating screw 12 continues to rotate, so that the slider 4 drives the suction cup 7 to return to its initial state; S7. The conveyor line 1 is activated, and the light guide plate 44 is conveyed to the next station through the conveyor line 1 for subsequent processing.

[0041] In the present technical solution, during the process of conveying the light guide plate 44, the protective film 45 on the surface of the light guide plate 44 can be torn off. During the tearing process, the two corners of the protective film 45 are simultaneously adsorbed by the suction cup 7, so that the two corners of the protective film 45 are lifted up, which is beneficial to improve the tearing effect. When the suction cup 7 moves along the inclined groove 901, one side of the protective film 45 is conveyed toward the direction of the suction cup 7 by the compacting roller, so that before the suction cup 7 slides along the vertical groove 902, one side of the protective film 45 is completely torn off, so that the protective film 45 between the two groups of suction cups 7 is approximately in a horizontal state, thereby avoiding the protective film 45 from breaking when the protective film 45 is pulled down along the vertical portion.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A conveying device for producing light guide plates, comprising a conveying line (1) for conveying light guide plates (44), characterized in that: A support rod (2) is provided on the outside of the conveyor line (1), a top plate (3) is fixed on the top of the support rod (2), two groups of sliders (4) capable of horizontal reciprocating motion are symmetrically provided below the top plate (3), a guide rod (5) is fixed on the surface of the slider (4), a movable seat (6) is slidably provided at both ends of the guide rod (5), a suction cup (7) capable of moving up and down is fixed on the lower surface of the movable seat (6), a guide rod (8) is fixed on the top of the movable seat (6), a guide groove (9) is provided on the lower surface of the top plate (3), and the suction cup (7) slides along the guide groove (9) through the guide rod (8) to tear off the protective film (45) on the surface of the light guide plate (44).

2. The conveying device for light guide plate production according to claim 1, characterized in that: A fixed block (10) is fixed on the surface of the support rod (2), a servo motor (11) is fixed on the surface of the fixed block (10), a reciprocating screw (12) is fixed to the output end of the servo motor (11), the slider (4) is threadedly connected to the circumference of the reciprocating screw (12), an electric push rod (46) is fixed on the lower surface of the movable seat (6), and the output end of the electric push rod (46) is fixed to the suction cup (7).

3. The conveying device for light guide plate production according to claim 2, characterized in that: The guide groove (9) comprises an inclined groove (901) and a vertical groove (902) which are connected to each other.

4. The conveying device for light guide plate production according to claim 1, characterized in that: A movable rod (13) capable of being raised and lowered is slidably provided on the movable seat (6), a lifting seat (14) is fixed at the bottom end of the movable rod (13), a bonding plate (15) is slidably provided on one side surface of the lifting seat (14), a positioning plate (16) is fixed on the surface of the lifting seat (14), a rotating shaft (17) is rotatably provided on the positioning plate (16), a pressing roller (18) is fixed at the bottom end of the rotating shaft (17), the rotating shaft (17) passes through the movable seat (6) and is slidably connected to the movable seat (6), a gear (19) is fixed at the top end of the rotating shaft (17), and a tooth plate (20) for engaging with the gear (19) is fixed on the lower surface of the top plate (3).

5. The conveying device for producing light guide plates according to claim 4, characterized in that: The guide rod (8) is internally slidably provided with a first core rod (21), the bottom end of the first core rod (21) is fixed with a slide plate (22), the slide plate (22) is slidably provided in the movable seat (6), a first spring (23) is fixed between the slide plate (22) and the movable rod (13), a first convex plate (24) is fixed on the surface of the movable rod (13), the first convex plate (24) is slidably provided in the movable seat (6), a second spring (25) is fixed between the first convex plate (24) and the inner wall of the movable seat (6), a second core rod (26) is internally slidably provided in the movable rod (13) and the lifting seat (14), the top of the second core rod (26) is fixed to the slide plate (22), and the bottom end of the second core rod (26) is provided with an ejection assembly for pushing the bonding plate (15) out of the inside of the lifting seat (14).

6. The conveying device for light guide plate production according to claim 5, characterized in that: A first sliding protrusion (27) is fixed to the end of the first core rod (21), and a track groove (28) for the first sliding protrusion (27) to slide is opened on the inner wall of the guide groove (9), and the track groove (28) includes a first horizontal portion (281), a first descending portion (282), a second descending portion (283), a second horizontal portion (284) and an ascending portion (285) connected from left to right.

7. The conveying device for light guide plate production according to claim 6, characterized in that: The ejection assembly includes an ejection rod (29) fixed to the bonding plate (15), the ejection rod (29) is slidably connected to the second core rod (26), a second sliding protrusion (30) is fixed to the end of the ejection rod (29), and an abutment groove (31) for the second sliding protrusion (30) to slide is provided on the inner wall of the second core rod (26).

8. The conveying device for light guide plate production according to claim 6, characterized in that: The ejection assembly includes an ejection rod (29) fixed to the bonding plate (15), a first contact block (32) is fixed to the end of the ejection rod (29), a second contact block (33) in contact with the first contact block (32) is fixed to the end of the second core rod (26), a second convex plate (34) is fixed to the surface of the bonding plate (15), and a third spring (35) is fixed between the second convex plate (34) and the lifting seat (14).

9. The conveying device for light guide plate production according to claim 6, characterized in that: An air guide groove (36) is provided inside the bonding plate (15), and an adsorption hole (37) connected to the air guide groove (36) is provided on the surface of the bonding plate (15). An air cylinder (38) is fixed on the surface of the bonding plate (15), and the air cylinder (38) is slidably arranged inside the lifting seat (14). An air cavity (39) connected to the air guide groove (36) is provided inside the air cylinder (38), and a piston plate (40) is slidably arranged inside the air cavity (39). A pull rod (41) is fixed inside the lifting seat (14), and the end of the pull rod (41) is fixed to the piston plate (40). A ventilation groove (42) is provided inside the lifting seat (14), and a through hole (43) is provided on the air cylinder (38) for connecting the ventilation groove (42) with the air cavity (39).

10. A conveying method for producing light guide plates, characterized in that: The conveying device for producing light guide plates according to any one of claims 1 to 9 comprises the following steps: S1. The light guide plate (44) is transported through the conveyor line (1). When the light guide plate (44) is transported to the bottom of the top plate (3), the transport is stopped and the light guide plate (44) is fixed; S2. The electric push rod (46) pushes the suction cup (7) downward, moves the suction cup (7) to the corner of the protective film (45), and adsorbs the corner of the protective film (45), and then the electric push rod (46) is reset, so that the suction cup (7) lifts the corner of the protective film (45); S3. The servo motor (11) drives the reciprocating screw (12) to rotate, causing the slider (4) to slide on the reciprocating screw (12), the slider (4) drives the guide rod (5) to move, the guide rod (5) drives the movable seat (6) to move, and the guide rod (8) slides in the guide groove (9), causing the movable seat (6) to move along the direction of the guide groove (9), so that the suction cup (7) first moves along the trajectory of the inclined groove (901); S4. When the suction cup (7) moves along the track of the inclined groove (901), the guide rod (8) drives the first core rod (21) to slide, and the first core rod (21) drives the first sliding protrusion (27) to slide along the track groove (28), so that the first sliding protrusion (27) drives the first core rod (21) to move downward, and the downward movement of the first core rod (21) drives the movable rod (13), the lifting seat (14), and the pressure roller (18) to move downward until one side of the protective film (45) that lifts the suction cup (7) is located between the lifting seat (14) and the pressure roller (18); S5. The laminating plate (15) is pushed out from the inside of the lifting seat (14) by the ejection assembly, so that the pressure roller (18) presses the protective film (45) against the laminating plate (15). Then, when the suction cup (7) moves along the track of the inclined groove (901), the gear (19) engages with the tooth plate (20), so that the gear (19) drives the rotating shaft (17) to rotate, and the rotating shaft (17) drives the compacting roller to rotate. The compacting roller conveys one side of the protective film (45) toward the suction cup (7), and completely tears off one side of the protective film (45); S6. The suction cup (7) moves along the trajectory of the vertical groove (902) to tear off the entire protective film (45). After tearing off, the reciprocating screw (12) continues to rotate, so that the slider (4) drives the suction cup (7) to return to its initial state; S7. The conveyor line (1) is activated, and the light guide plate (44) is conveyed to the next station via the conveyor line (1) for subsequent processing.

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