A narrow-edge laminating machine and laminating method for multiple light guide plates

Abstract

The present invention discloses a narrow-edge laminating machine and a laminating method for multiple light guide plates, which include a frame, a front-end conveying mechanism, a push rod mechanism, a laminating mechanism, a conveying mechanism for the light guide plates after laminating, a cutting knife mechanism, and a rear-end conveying mechanism. Compared with the prior art, the present invention can mainly achieve continuous lamination of multiple light guide plates through the mutual cooperation among the push rod mechanism, the laminating mechanism, the conveying mechanism for the light guide plates after laminating, the cutting knife mechanism, and the rear-end conveying mechanism. Moreover, the edge distance between adjacent light guide plates after film cutting can be maintained within 0.5 ≧ edge distance ≦ 3 mm, still meeting the product attribute requirements and ensuring the product quality.

Description

Technical Field

[0001] The present invention relates to the technical field of laminating machines, in particular to a narrow-edge laminating machine for multiple light guide plates and a laminating method. Background Art

[0002] A light guide plate is made of optical-grade acrylic / PC plates, and then light guide points are processed by laser or a high-tech material with extremely high reflectivity and no light absorption is used, and light guide points are printed on the bottom surface of the optical-grade acrylic plate by UV screen printing technology. The optical-grade acrylic plate is used to absorb the light emitted from the lamp and stay on the surface of the optical-grade acrylic plate. When the light hits each light guide point, the reflected light will spread in all directions, and then the reflection condition is destroyed and emitted from the front of the light guide plate. Through various light guide points with different densities and sizes, the light guide plate can emit light evenly. The function of the reflective sheet is to reflect the light exposed on the bottom surface back into the light guide plate to improve the light use efficiency.

[0003] In the current industrial production process, the various parts of a product are not processed at the same location and at the same time. This results in that after the light guide plate is processed, it is not immediately sent into the assembly line for assembly. Instead, after processing, it needs to be stored and transported, and only when it is needed, it is taken out for use and cooperated with other parts to finally form a product.

[0004] Due to the small diameter and dense distribution of the light guide points on the light guide plate, it is easy to be contaminated, stained with dust or other pollutants without packaging protection, and thus it cannot be used normally.

[0005] To prevent the light guide plate from being contaminated during storage and transportation, the existing solution is to laminate the processed light guide plate. Specifically, a layer of film is covered on each of the front and back sides of the light guide plate, and the two films are adhered together using the material properties of the film itself for sealing protection.

[0006] The existing laminating machines can continuously laminate multiple light guide plates, but the existing laminating equipment is only suitable for the laminating requirements of products with a blank margin of the protective film on the light guide plate ≥ 3 mm, and cannot meet the requirements of products with a blank margin of ≤ 3 mm after laminating the protective film; there is no equipment mechanism in the existing technology with a laminating margin accuracy requirement of 0.5 ≤ margin ≤ 3 mm. Summary of the Invention

[0007] The object of the present invention is to provide a narrow-edge laminating machine for multiple light guide plates and a laminating method. After laminating the protective film of the light guide plate, the front and back margins between the plates are 0.5 ≤ margin ≤ 3 mm, which can still meet the product attribute requirements and ensure the product quality.

[0008] To achieve the above object, the present invention is implemented according to the following technical solutions:

[0009] A narrow-edge margin laminating machine for multiple light guide plates, comprising a frame, a front-end conveying mechanism, a laminating mechanism, a conveying mechanism for the light guide plates after laminating, a cutting knife mechanism, and a rear-end conveying mechanism.

[0010] The front-end conveying mechanism is arranged at the front end of the frame and is used for conveying the light guide plates to the laminating mechanism.

[0011] The laminating mechanism is installed on the frame at the rear end of the front-end conveying mechanism and is used for laminating the upper and lower end faces of the light guide plates.

[0012] The cutting knife mechanism is installed on the frame at the rear end of the laminating mechanism and is used for cutting the film of the light guide plates after laminating.

[0013] The conveying mechanism for the light guide plates after laminating is arranged on the frame below the rear end of the cutting knife mechanism and rotates synchronously with the laminating mechanism, and is used for conveying the light guide plates during film cutting and conveying the light guide plates after film cutting to the rear-end conveying mechanism.

[0014] The rear-end conveying mechanism is installed on the frame at the rear end of the conveying mechanism for the light guide plates after laminating.

[0015] Furthermore, the front-end conveying mechanism includes a feeding conveyor belt arranged at the front end of the frame, two driving mechanisms symmetrically arranged on the frame at the rear end of the feeding conveyor belt for driving the light guide plates to move forward, and a push rod mechanism located between the two driving mechanisms for pushing the light guide plates to the laminating mechanism.

[0016] Furthermore, the driving mechanism for driving the light guide plates to move forward includes a front-end rotating shaft arranged at the front end of the frame, at least two front-end pulleys fixed side by side on the front-end rotating shaft, several rear-end pulleys arranged on the frame corresponding to the front-end belts, conveyor belts connected to the front-end pulleys and the rear-end pulleys, and several forward damping wheels arranged on the front-end frame below the upper laminating roller and the lower laminating roller. The front-end pulleys, the rear-end pulleys, and the forward damping wheels are located on a straight line, and the upper end faces of the forward damping wheels are in the same plane as the upper end faces of the conveyor belts.

[0017] Further, the film laminating mechanism includes an upper film laminating roller installed on the frame and a lower film laminating roller located directly below the upper film laminating roller. An upper protective film roller with a protective film wound thereon is installed on the frame above the upper film laminating roller, and a lower protective film roller with a protective film wound thereon is installed on the frame below the lower film laminating roller. An upper guiding roller is installed on the frame between the upper film laminating roller and the upper protective film roller. The end of the protective film on the upper protective film roller is connected to the upper guiding roller and then pasted at the tangent point at the bottom of the upper film laminating roller; a lower guiding roller is installed on the frame between the lower film laminating roller and the lower protective film roller. The end of the protective film on the lower protective film roller is connected to the lower guiding roller and then pasted at the tangent point at the top of the lower film laminating roller; the upper film laminating roller and the lower film laminating roller are located at the rear end of the front-end conveying mechanism. The upper film laminating roller is driven by an upper film laminating roller motor to rotate counterclockwise, and the lower film laminating roller is driven by a lower film laminating roller motor to rotate clockwise. The rotational speeds of the upper film laminating roller motor and the lower film laminating roller motor are the same; when the light guide plate passes through the upper film laminating roller and the lower film laminating roller, it is tangent to the upper film laminating roller and the lower film laminating roller.

[0018] Further, the cutting mechanism includes a pressing block installed on the frame for pressing the light guide plate after film lamination and a cutter located at the front end of the pressing block for cutting the protective film on the light guide plate. The cutter is arranged above the light guide plate along the width direction of the frame, and the cutter is driven by a horizontal reciprocating motion mechanism installed on the frame. The pressing block is driven by a vertical reciprocating motion mechanism installed on the frame.

[0019] Preferably, the horizontal reciprocating motion mechanism is a linear module fixed to the frame.

[0020] Preferably, the vertical reciprocating motion mechanism is a cylinder vertically fixed to the frame above the conveying mechanism of the light guide plate after film lamination. The end of the top rod of the cylinder is connected to a pressing block connecting frame, and a plurality of pressing blocks are fixedly installed at the lower end of the pressing block connecting frame.

[0021] Preferably, the conveying mechanism of the light guide plate after film lamination includes a driven roller installed on the frame below the rear end of the cutter, a driving roller installed on the frame at the front end of the rear-end conveying mechanism, and a conveyor belt I connecting the driving roller and the driven roller. The driving roller is driven by a driving roller motor installed on the frame, and the rotational speed of the driving roller motor is the same as that of the upper film laminating roller motor and the lower film laminating roller motor; friction silicone rings are wound on both the driving roller and the driven roller.

[0022] Preferably, the rear-end conveying mechanism includes a rear-end driven roller installed at the rear end of the driving roller, a rear-end driving roller installed at the rear end of the frame, and a rear conveyor belt connecting the rear-end driving roller and the rear-end driven roller. The rear-end driving roller is driven by a rear-end driving roller motor installed on the frame.

[0023] The narrow-edge laminating machine using the above-mentioned multiple light guide plates can achieve narrow-edge lamination of multiple light guide plates. The specific steps of the lamination method are as follows:

[0024] S1. Randomly place the first light guide plate on the front-end conveying mechanism;

[0025] S2. The push rod mechanism advances, and pushes the first light guide plate to a position more than 1 mm behind the center line of the upper laminating roller and the lower laminating roller. The upper laminating roller and the lower laminating roller start to laminate the upper and lower end faces of the first light guide plate;

[0026] S3. The push rod mechanism retreats, and a synchronization point is set on the frame at the front end of the upper laminating roller and the lower laminating roller. This synchronization point is set artificially. The synchronization point is a straight line parallel to the center line of the upper laminating roller or the lower laminating roller between the front-end conveying mechanism and the upper laminating roller or the lower laminating roller. After the upper laminating roller and the lower laminating roller push the tail of the first light guide plate to a certain distance behind the synchronization point, they stop. This distance is the margin between the first light guide plate and the second light guide plate, and 0.5 ≤ margin ≤ 3 mm;

[0027] S4. Randomly place the second light guide plate on the front-end conveying mechanism;

[0028] S5. The push rod mechanism advances, and pushes the front end of the second light guide plate to the synchronization point;

[0029] S6. Keep the margin between the first light guide plate and the second light guide plate. Synchronize the push rod mechanism, the upper laminating roller, and the lower laminating roller, and push the second light guide plate to a position more than 1 mm above the center position of the upper laminating roller and the lower laminating roller. The upper laminating roller and the lower laminating roller start to laminate the upper and lower end faces of the second light guide plate; at the same time, the first light guide plate is pushed backward by the light guide plate conveying mechanism after lamination;

[0030] S7. The push rod mechanism retreats;

[0031] S8. When the light guide plate conveying mechanism pushes the rear end of the first light guide plate to a distance of half of the margin behind the center line of the cutting knife, the pressing block descends to press the first light guide plate, and the cutting knife cuts the protective film;

[0032] S9. The first light guide plate after cutting is conveyed by the rear-end conveying mechanism and then taken away;

[0033] S10. After the first light guide plate is taken away, repeat steps S3 - S9 to continuously laminate the subsequent multiple light guide plates.

[0034] Compared with the prior art, the present invention can achieve continuous film covering for multiple light guide plates mainly through the mutual cooperation among the push rod mechanism, the film covering mechanism, the light guide plate conveying mechanism after film covering, the cutting knife mechanism, and the rear-end conveying mechanism. Moreover, the margin between adjacent light guide plates after film cutting can be maintained within the range of 0.5 ≤ margin ≤ 3 mm, still meeting the product attribute requirements and ensuring the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the mechanism of the present invention.

[0036] Figure 2 It is Figure 1 an enlarged view of part A of

[0037] Figure 3 It is a film covering path diagram of the film covering mechanism of the present invention.

[0038] Figure 4 It is a state diagram when the first light guide plate is placed on the front-end conveying mechanism.

[0039] Figure 5 It is a state diagram when the push rod mechanism pushes the first light guide plate to a position more than 1 mm behind the center line of the upper film covering roller and the lower film covering roller.

[0040] Figure 6 It is a state diagram when the upper film covering roller and the lower film covering roller push the tail of the first light guide plate to a certain distance behind the synchronization point.

[0041] Figure 7 It is a state diagram when the tail of the first light guide plate is pushed to a certain distance behind the synchronization point and the second light guide plate is placed on the front-end conveying mechanism.

[0042] Figure 8 It is a state diagram when the tail of the first light guide plate is pushed to a certain distance behind the synchronization point and the front end of the second light guide plate is pushed to the synchronization point.

[0043] Figure 9 It is a state diagram when the push rod mechanism pushes the second light guide plate to a position more than 1 mm above the center position of the upper film covering roller and the lower film covering roller.

[0044] Figure 10 It is a state diagram when the push rod mechanism retracts and the second light guide plate is pushed to a position more than 1 mm above the center position of the upper film covering roller and the lower film covering roller.

[0045] Figure 11 It is a state diagram when the light guide plate conveying mechanism pushes the rear end of the first light guide plate to a distance of half of the margin from the center line position of the cutting knife.

[0046] Figure 12It is a state diagram after the light guide plate conveying mechanism pushes the rear end of the first light guide plate past a distance of half the margin of the center line of the cutting knife and cuts the film.

[0047] Figure 13 It is a state diagram when the upper film covering roller and the lower film covering roller push the tail of the second light guide plate to a certain distance behind the synchronization point. Specific embodiments

[0048] 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 in conjunction with embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the invention.

[0049] As Figures 1 - 3 shown, a narrow-margin film covering machine for multiple light guide plates in this embodiment includes a frame 1, a front-end conveying mechanism, a film covering mechanism 5, a light guide plate conveying mechanism 7 after film covering, a cutting knife mechanism 6, and a rear-end conveying mechanism 8;

[0050] The front-end conveying mechanism is arranged at the front end of the frame 1 and is used to convey the light guide plate 9 to the film covering mechanism 5;

[0051] The film covering mechanism 5 is installed on the frame 1 at the rear end of the front-end conveying mechanism and is used to cover the upper and lower end faces of the light guide plate 9;

[0052] The cutting knife mechanism 6 is installed on the frame at the rear end of the film covering mechanism and is used to cut the film of the light guide plate 9 after film covering;

[0053] The light guide plate conveying mechanism 7 after film covering is arranged on the frame 1 below the rear end of the cutting knife mechanism and rotates synchronously with the upper film covering mechanism 5, and is used for conveying the light guide plate 9 during film cutting and conveying the light guide plate 9 after film cutting to the rear-end conveying mechanism 8.

[0054] Specifically, the front-end conveying mechanism includes a feeding conveyor belt 2 provided at the front end of the frame 1, two driving mechanisms 3 symmetrically arranged on the frame 1 at the rear end of the feeding conveyor belt 2 for driving the light guide plate to move forward, and a push rod mechanism 4 located between the two driving mechanisms 3 for pushing the light guide plate 9 to the film laminating mechanism 5; in this embodiment, the driving mechanism 3 for driving the light guide plate to move forward includes a front-end rotating shaft 31 provided at the front end of the frame 1, at least two front-end pulleys 32 fixedly arranged side by side on the front-end rotating shaft 31, several rear-end pulleys 33 corresponding to the front-end pulleys 32 provided on the frame 1, a conveyor belt 34 connected between the front-end pulleys 32 and the rear-end pulleys 33, and several forward damping wheels 35 provided on the front-end frame 1 below the upper film laminating roller 51 and the lower film laminating roller 52. Of course, the front-end rotating shaft 31 is driven by a motor, and the front-end pulleys 32, the rear-end pulleys 33, and the forward damping wheels 35 are located on a straight line, and the upper end surfaces of the forward damping wheels 35 and the upper end surface of the conveyor belt 34 are in the same plane. The forward damping wheels 35 used in this embodiment can be composed of a magnetic damper and a damping wheel. The main purpose is that since the light guide plate is a product with a relatively heavy self-weight, adding a braking function damping wheel can start and stop at any time, and the light guide plate does not shift on the forward damping wheels 35. It should be noted that both the magnetic damper and the damping wheel can be directly purchased on the market and applied to this embodiment, so their specific structures will not be described in detail.

[0055] The film laminating mechanism 5 includes an upper film laminating roller 51 installed on the frame 1 and a lower film laminating roller 52 located directly below the upper film laminating roller 51. An upper protective film roller 53 wound with a protective film 57 is installed on the frame 1 above the upper film laminating roller 51, and a lower protective film roller 54 wound with a protective film 57 is installed on the frame 1 below the lower film laminating roller 52. An upper guiding roller 55 is installed on the frame 1 between the upper film laminating roller 1 and the upper protective film roller 53. The end of the protective film 57 on the upper protective film roller 53 is connected to the upper guiding roller 55 and then pasted at the tangent point at the bottom of the upper film laminating roller 51; a lower guiding roller 56 is installed on the frame 1 between the lower film laminating roller 52 and the lower protective film roller 54. The end of the protective film 57 on the lower protective film roller 51 is connected to the lower guiding roller 56 and then pasted at the tangent point at the top of the lower film laminating roller 52; the upper film laminating roller 51 and the lower film laminating roller 52 are located at the rear end of the front-end conveying mechanism. The upper film laminating roller 51 is driven by an upper film laminating roller motor (not shown in the figure) to rotate counterclockwise, and the lower film laminating roller 52 is driven by a lower film laminating roller motor (not shown in the figure) to rotate clockwise. The rotational speeds of the upper film laminating roller motor and the lower film laminating roller motor are the same; when the light guide plate 9 passes through the upper film laminating roller 51 and the lower film laminating roller 52, it is tangent to the upper film laminating roller 51 and the lower film laminating roller 52.

[0056] In this embodiment, the cutting knife mechanism 6 is installed on the frame 1 at the rear ends of the upper film-covering roller 51 and the lower film-covering roller 52. The cutting knife mechanism 6 includes a pressing block 61 installed on the frame 1 for pressing the light guide plate 9 after film covering and a cutting knife 62 located at the front end of the pressing block 61 for cutting the protective film on the light guide plate 9. The cutting knife 62 is arranged above the light guide plate 9 along the width direction of the frame, and the cutting knife 62 is driven by a lateral reciprocating motion mechanism 63 installed on the frame 1, and the pressing block 61 is driven by a vertical reciprocating motion mechanism 64 installed on the frame 1.

[0057] In this embodiment, the conveying mechanism 7 for the light guide plate after film covering is arranged on the frame 1 below the rear end of the cutting knife 62, and the pressing block 61 is located above the conveying mechanism 7 for the light guide plate after film covering; the conveying mechanism 7 for the light guide plate after film covering includes a driven roller 72 arranged on the frame 1 below the rear end of the cutting knife 62, a driving roller 71 arranged on the frame 1 at the front end of the rear-end conveying mechanism 8, and a conveyor belt 73 connecting the driving roller 71 and the driven roller 72. The driving roller 71 is driven by a driving roller motor (not shown in the figure) installed on the frame 1, and the driving roller motor has the same rotation speed as the upper film-covering roller motor and the lower film-covering roller motor (of course, it can also be controlled by a controller through a program to make the driving roller motor have the same rotation speed as the upper film-covering roller motor and the lower film-covering roller motor); friction silicone rings 74 are wound around both the driving roller 71 and the driven roller 72. When the cutting knife 62 cuts the film, the driving roller motor has the same rotation speed as the upper film-covering roller motor and the lower film-covering roller motor to synchronize the upper film-covering roller 51, the lower film-covering roller 52 and the conveyor belt 73, so as to ensure the stable interval of each light guide plate 9.

[0058] In this embodiment, the rear-end conveying mechanism 8 is installed on the frame 1 at the rear end of the conveying mechanism 7 for the light guide plate after film covering; the rear-end conveying mechanism 8 includes a rear-end driven roller 82 arranged at the rear end of the driving roller 71, a rear-end driving roller 81 arranged at the rear end of the frame 1, and a rear-end conveyor belt 83 connecting the rear-end driving roller 81 and the rear-end driven roller 82. The rear-end driving roller 81 is driven by a rear-end driving roller motor (not shown in the figure) arranged on the frame 1.

[0059] In this embodiment, the push rod mechanism 4 includes a conveyor chain 41 disposed on a frame 1 between two driving mechanisms for driving the light guide plate forward, and a push rod cylinder 42 vertically fixed to the conveyor chain 41. The top end of the push rod of the push rod cylinder 42 faces upward, and two guide posts 43 for pushing the light guide plate are fixed to the top end of the push rod of the push rod cylinder 42. The conveyor chain 41 is connected to a driving sprocket and a driven sprocket disposed on the frame 1, and the driving sprocket is driven by a servo motor. The forward and reverse rotations of the servo motor (not shown in the figure) can drive the forward or reverse rotation of the conveyor chain 41, thereby driving the push rod cylinder 42 to move forward or backward. When it is necessary to push the light guide plate, the push rod cylinder 42 is driven to move forward, and at the same time, the push rod of the push rod cylinder 42 extends out, and the guide posts 43 thereon push against the rear end of the light guide plate, and then the light guide plate is pushed toward the film laminating mechanism 5.

[0060] In this embodiment, the lateral reciprocating motion mechanism 63 is a linear module fixed to the frame 1. Linear modules usually include synchronous belt type and ball screw type, which are common reciprocating motion mechanisms in the mechanical field. Therefore, they can be directly purchased and used on the market. The ball screw type is used in this embodiment.

[0061] In this embodiment, the vertical reciprocating motion mechanism 64 is a cylinder vertically fixed to the frame 1 above the light guide plate conveying mechanism 7 after film laminating. The end of the push rod of the cylinder is connected with a pressure block connecting frame, and a plurality of pressure blocks 61 are fixedly arranged at the lower end of the pressure block connecting frame. After the film laminating is completed, before the cutting knife 62 cuts the protective film, it is necessary to first drive the pressure block connecting frame to move downward through the cylinder so that the pressure blocks press the light guide plate to prevent the light guide plate from shifting when cutting the protective film 57.

[0062] The narrow-edge film laminator for multiple light guide plates can be used to achieve narrow-edge film laminating of multiple light guide plates. Refer to Figures 4 - 13 , and the specific steps of its film laminating method are as follows:

[0063] S1. Randomly place the first light guide plate 91 on the front-end conveying mechanism;

[0064] S2. The push rod mechanism moves forward, and the first light guide plate 91 is pushed to a position more than 1 mm behind the center line of the upper film laminating roller and the lower film laminating roller. The upper film laminating roller and the lower film laminating roller start to laminate the upper and lower end faces of the first light guide plate 91;

[0065] S3. The push rod mechanism moves backward, and a synchronization point is set on the frame at the front end of the upper film laminating roller and the lower film laminating roller. After the upper film laminating roller and the lower film laminating roller push the tail of the light guide plate to a certain distance behind the synchronization point, they stop. This synchronization point is set artificially. The synchronization point is a straight line parallel to the center line of the upper film laminating roller or the lower film laminating roller between the front-end conveying mechanism and the upper film laminating roller or the lower film laminating roller. This distance is the edge distance between the first light guide plate 91 and the second light guide plate 92, and 0.5 ≤ edge distance ≤ 3 mm;

[0066] S4. Randomly place the second light guide plate 92 on the front-end conveying mechanism;

[0067] S5. The push rod mechanism advances to push the front end of the second light guide plate 92 to the synchronization point;

[0068] S6. Keep the margin between the first light guide plate 91 and the second light guide plate 92. Synchronize the push rod mechanism, the upper film covering roller and the lower film covering roller to push the second light guide plate 92 to a position more than 1 mm above the center positions of the upper film covering roller and the lower film covering roller. The upper film covering roller and the lower film covering roller start to cover the upper and lower end faces of the second light guide plate 92 with film; at the same time, the first light guide plate 91 is pushed backward by the light guide plate conveying mechanism after film covering;

[0069] S7. The push rod mechanism retracts;

[0070] S8. When the light guide plate conveying mechanism pushes the rear end of the first light guide plate 91 past a distance equal to half of the margin of the center line of the cutting knife, the pressing block descends to press the first light guide plate 91, and the cutting knife cuts the protective film;

[0071] S9. The first light guide plate 91 after cutting is conveyed by the rear-end conveying mechanism and then taken away;

[0072] S10. After the first light guide plate 91 is taken away, repeat steps S3 - S9 to continuously cover the subsequent multiple light guide plates with film.

[0073] The technical solution of the present invention is not limited to the limitations of the above specific embodiments. Any technical deformation made according to the technical solution of the present invention falls within the protection scope of the present invention.

Claims

1. A narrow-edge margin laminating machine for multiple light guide plates, comprising a frame, a front-end conveying mechanism, a laminating mechanism, a conveying mechanism for the light guide plates after laminating, a cutting knife mechanism, and a rear-end conveying mechanism, characterized in that: The front-end conveying mechanism is arranged at the front end of the frame and is used to convey the light guide plate to the film laminating mechanism; The film laminating mechanism is installed on the frame at the rear end of the front-end conveying mechanism and is used to laminate the upper and lower end faces of the light guide plate; The cutting knife mechanism is installed on the frame at the rear end of the film laminating mechanism and is used to cut the film of the light guide plate after film lamination; The conveying mechanism for the light guide plate after film lamination is arranged on the frame below the rear end of the cutting knife mechanism and rotates synchronously with the film laminating mechanism, and is used for conveying the light guide plate during film cutting and conveying the light guide plate after film cutting to the rear-end conveying mechanism; The rear-end conveying mechanism is installed on the frame at the rear end of the conveying mechanism for the light guide plate after film lamination; The front-end conveying mechanism includes a feeding conveyor belt arranged at the front end of the frame, two driving mechanisms symmetrically arranged on the frame at the rear end of the feeding conveyor belt and used to drive the light guide plate to move forward, and a push rod mechanism located between the two driving mechanisms for pushing the light guide plate to the film laminating mechanism; The driving mechanism for driving the light guide plate to move forward includes a front-end rotating shaft arranged at the front end of the frame, at least two front-end pulleys fixed side by side on the front-end rotating shaft, several rear-end pulleys corresponding to the front-end pulleys arranged on the frame, a conveyor belt connected between the front-end pulleys and the rear-end pulleys, and several forward damping wheels arranged on the front-end frame below the upper film laminating roller and the lower film laminating roller. The front-end pulleys, the rear-end pulleys and the forward damping wheels are located on a straight line, and the upper end surfaces of the forward damping wheels are in the same plane as the upper end surface of the conveyor belt; The film laminating mechanism includes an upper film laminating roller installed on the frame and a lower film laminating roller located directly below the upper film laminating roller. An upper protective film roller with a protective film wound thereon is installed on the frame above the upper film laminating roller, and a lower protective film roller with a protective film wound thereon is installed on the frame below the lower film laminating roller. An upper guiding roller is installed on the frame between the upper film laminating roller and the upper protective film roller. The end of the protective film on the upper protective film roller is connected to the upper guiding roller and then pasted at the tangent point at the bottom of the upper film laminating roller. A lower guiding roller is installed on the frame between the lower film laminating roller and the lower protective film roller. The end of the protective film on the lower protective film roller is connected to the lower guiding roller and then pasted at the tangent point at the top of the lower film laminating roller. The upper film laminating roller and the lower film laminating roller are located at the rear end of the front-end conveying mechanism. The upper film laminating roller is driven by an upper film laminating roller motor to rotate counterclockwise, and the lower film laminating roller is driven by a lower film laminating roller motor to rotate clockwise. The rotation speeds of the upper film laminating roller motor and the lower film laminating roller motor are the same. When the light guide plate passes through the upper film laminating roller and the lower film laminating roller, it is tangent to the upper film laminating roller and the lower film laminating roller; The cutting knife mechanism includes a pressing block installed on the frame for pressing the light guide plate after film lamination and a cutting knife located at the front end of the pressing block for cutting the protective film on the light guide plate. The cutting knife is arranged above the light guide plate along the width direction of the frame, and the cutting knife is driven by a transverse reciprocating motion mechanism installed on the frame, and the pressing block is driven by a vertical reciprocating motion mechanism installed on the frame; The transverse reciprocating motion mechanism is a linear module fixed on the frame; The vertical reciprocating motion mechanism is a cylinder vertically fixed on the frame above the conveying mechanism of the light guide plate after laminating. A pressure block connecting frame is connected to the end of the ejector rod of the cylinder, and a plurality of pressure blocks are fixed to the lower end of the pressure block connecting frame; The conveying mechanism of the light guide plate after laminating includes a driven roller arranged on the frame below the rear of the cutting knife, a driving roller arranged on the frame at the front end of the rear conveying mechanism, and a conveyor belt I connected between the driving roller and the driven roller. The driving roller is driven by a driving roller motor installed on the frame. The rotational speed of the driving roller motor is the same as that of the upper laminating roller motor and the lower laminating roller motor. Friction silica gel rings are wound on both the driving roller and the driven roller; The rear conveying mechanism includes a rear driven roller arranged at the rear of the driving roller, a rear driving roller arranged at the rear end of the frame, and a rear conveyor belt connecting the rear driving roller and the rear driven roller. The rear driving roller is driven by a rear driving roller motor arranged on the frame; The narrow edge distance means that the edge distance between adjacent light guide plates after film cutting is maintained at 0.5 ≤ edge distance ≤ 3 mm.

2. A method for narrow-edge laminating multiple light guide plates using the narrow-edge laminating machine for multiple light guide plates described in claim 1, characterized in that: It includes the following steps: S1. Randomly place the first light guide plate on the front conveying mechanism; S2. The push rod mechanism advances, and pushes the first light guide plate to a position more than 1 mm behind the center line of the upper laminating roller and the lower laminating roller. The upper laminating roller and the lower laminating roller start to laminate the upper and lower end faces of the first light guide plate; S3. The push rod mechanism retreats, and a synchronization point is set on the frame at the front end of the upper laminating roller and the lower laminating roller. This synchronization point is set artificially. The synchronization point is a straight line parallel to the center line of the upper laminating roller or the lower laminating roller between the front conveying mechanism and the upper laminating roller or the lower laminating roller. After the upper laminating roller and the lower laminating roller push the tail of the first light guide plate to a certain distance behind the synchronization point, they stop. This distance is the edge distance between the first light guide plate and the second light guide plate, 0.5 ≤ edge distance ≤ 3 mm; S4. Randomly place the second light guide plate on the front conveying mechanism; S5. The push rod mechanism advances, and pushes the front end of the second light guide plate to the synchronization point; S6. Keep the edge distance between the first light guide plate and the second light guide plate, and synchronize the push rod mechanism with the upper laminating roller and the lower laminating roller to push the second light guide plate to a position more than 1 mm above the center position of the upper laminating roller and the lower laminating roller. The upper laminating roller and the lower laminating roller start to laminate the upper and lower end faces of the second light guide plate. At the same time, the first light guide plate is pushed backward by the conveying mechanism of the light guide plate after laminating; S7. The push rod mechanism retreats; S8. When the conveying mechanism of the light guide plate pushes the rear end of the first light guide plate to a distance of half of the edge distance behind the center line of the cutting knife, the pressure block descends to press the first light guide plate, and the cutting knife cuts the protective film; S9. The first light guide plate after cutting is conveyed by the rear conveying mechanism and then taken away; S10. After the first light guide plate is taken away, repeat steps S3 - S9 to continuously laminate subsequent multiple light guide plates.

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