Light guide plate adsorption mechanism with FPC board, assembly machine and assembly method

Abstract

The present invention discloses a light guide plate adsorption mechanism with an FPC board, an assembly machine, and an assembly method. The light guide plate adsorption mechanism with an FPC board includes a main adsorption component and at least one set of auxiliary adsorption components. The main adsorption component is configured to adsorb the main part of the light guide plate. The auxiliary adsorption component includes a driving device and an auxiliary adsorption component. The auxiliary adsorption component is configured to adsorb the FPC board connected to the light guide plate. The driving device is connected to the auxiliary adsorption component. After the FPC board is assembled, the driving device drives the auxiliary adsorption component to move to avoid the automatic assembly of the main part of the light guide plate. The above-mentioned light guide plate adsorption mechanism with an FPC board can achieve adsorption of the light guide plate with the FPC board and avoidance for subsequent automatic assembly. It not only has a simple structure, ingenious design, and low manufacturing cost; it also has a high degree of automation, saves manpower, has good versatility, and can reduce the processing cost of the backlight source to a certain extent.

Description

Technical Field

[0001] The present invention belongs to the technology of assembling a light guide plate of a backlight source, and in particular relates to an adsorption mechanism of a light guide plate with an FPC board, an assembly machine and an assembly method. Background Art

[0002] A backlight is a light source located behind a liquid crystal display (LCD). Its luminous effect directly affects the visual quality of the LCD module. LCDs themselves do not emit light; the image displayed on the LCD panel is illuminated by the light emitted by the backlight. There are two main types of backlights: direct-lit and edge-lit. Direct-lit backlights are typically evenly distributed along the surface of the LCD panel, emitting light toward the LCD panel to illuminate it. Edge-lit backlights, on the other hand, use a light source positioned along the side of the LCD panel, emitting light in the plane of the panel. A light guide plate (LGP) is positioned parallel to the panel. Light from the light source enters the LGP from the side. Most of the light entering the LGP is totally reflected from the front and back surfaces, ultimately exiting from the inside of the LGP through the other side. By distributing dots on the LGP to disrupt total internal reflection, the light is directed toward the LCD panel and exits the LGP. By properly arranging the dots to disrupt total internal reflection, the emitted light can be uniform across the entire surface of the LGP, avoiding areas of excessive brightness or darkness.

[0003] Edge-lit backlights typically use a U-shaped back panel structure, where one side edge of the back panel is bent into a U-shaped groove for accommodating the light bar. The side edge of the light guide plate is also inserted into the U-shaped groove, aligning the side edge of the light guide plate with the light bar. To improve the assembly efficiency of conventional light guide plates, various automatic light guide plate assembly machines have been designed and developed. However, currently available automatic light guide plate assembly machines can only automatically assemble light guide plates without other accessories. In actual operation, some light guide plates are equipped with FPC boards (flexible printed circuit boards), and existing automatic light guide plate assembly machines are unable to meet the requirements of automatically assembling light guide plates with FPC boards. Summary of the Invention

[0004] The purpose of the present invention is to provide a light guide plate adsorption mechanism with an FPC board, an assembly machine and an assembly method to solve the problem in the prior art that light guide plate assembly equipment cannot automatically assemble the light guide plate with an FPC board.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A light guide plate adsorption mechanism with an FPC board, comprising:

[0007] a main adsorption component configured to adsorb the main body of the light guide plate,

[0008] At least one set of auxiliary adsorption components, the number and installation positions of the auxiliary adsorption components are set to match the number and position of the FPC boards connected to the light guide plate, and the auxiliary adsorption components include a driving device and an auxiliary adsorption component, the auxiliary adsorption component is configured to adsorb the FPC board connected to the light guide plate, the driving device is connected to the auxiliary adsorption component, and after the FPC board is assembled, the driving device drives the auxiliary adsorption component to move and reset to avoid the automatic assembly of the main part of the light guide plate.

[0009] Furthermore, the auxiliary adsorption component is installed on the main adsorption component to simplify the overall structure.

[0010] Furthermore, the main adsorption component includes an adsorption plate, which is provided with an adsorption surface, and the adsorption surface is provided with a plurality of vacuum adsorption holes. The setting of the adsorption plate can ensure the stability and reliability of the adsorption of the main part of the light guide plate.

[0011] Preferably, the auxiliary adsorption component includes a first adsorption block, which is provided with a plurality of vacuum adsorption holes arranged in a strip shape. The driving device adopts a cylinder, and the first adsorption block is fixedly connected to the piston rod of the cylinder through a first connecting plate. The cylinder is fixedly connected to the adsorption plate through a second connecting plate. The setting of the first adsorption block can ensure the stability and reliability of the FPC board adsorption. At the same time, the driving mode of the cylinder plus the connecting plate makes the overall structure simple, occupies little space and has low cost.

[0012] Optionally, a first elongated connecting hole is provided on the first adsorption block, and a fixing bolt fixes the first adsorption block to the first connecting plate through the first connecting hole. The first connecting hole is set to be elongated to adjust the installation position of the first adsorption block on the first connecting plate, thereby changing the distance between the first adsorption block and the adsorption plate and the back plate to ensure the smooth assembly of the main parts of the FPC board and the light guide plate.

[0013] A light guide plate assembly machine with an FPC board comprises an assembly platform, an assembly drive device and the light guide plate adsorption mechanism, wherein the assembly platform comprises a table for placing the main part of the light guide plate, and at least one second adsorption block extending outward is installed on one side edge of the table, and the second adsorption block is configured to adsorb the FPC board connected to the light guide plate. The light guide plate adsorption mechanism is connected to the driving end of the assembly drive device, and the assembly drive device drives the light guide plate adsorption mechanism to adsorb the light guide plate with the FPC board and rotate it to a certain angle to automatically assemble the light guide plate with the FPC board on the back panel.

[0014] Furthermore, the second adsorption block includes a suction plate body and a fixing part, the suction plate body is provided with a plurality of vacuum adsorption holes arranged in a strip shape as a whole, the fixing part is vertically connected to the end of the suction plate body, and the fixing part is provided with a second long strip-shaped connecting hole, and the second connecting hole is set to be long and can adjust the installation position of the second adsorption block on the assembly platform.

[0015] Furthermore, the assembly drive device adopts either a multi-axis manipulator or a multi-axis transfer module.

[0016] Preferably, the multi-axis transfer module includes a transverse movement module, a lifting module and a rotation module. The transverse movement module drives the light guide plate adsorption mechanism to move laterally, the lifting module drives the light guide plate adsorption mechanism to move up and down, and the rotation module drives the light guide plate adsorption mechanism to rotate a certain angle.

[0017] A method for assembling a light guide plate with an FPC board is provided, which is automatically assembled using the light guide plate assembly machine with an FPC board, and comprises the following steps:

[0018] The light guide plate adsorption mechanism automatically adsorbs the main part of the light guide plate and the FPC board through the main adsorption component and the auxiliary adsorption component.

[0019] The assembly drive device rotates a certain angle to first insert the FPC board into and pass through the U-shaped groove of the back panel, and then the drive device of the auxiliary adsorption component drives the auxiliary adsorption component to move to avoid it. Finally, the assembly drive device drives the main adsorption component to automatically assemble one side of the main part of the light guide plate in the U-shaped groove of the back panel.

[0020] The beneficial effect of the present invention is that compared with the existing technology, the light guide plate adsorption mechanism, assembly machine and assembly method with FPC board can realize the automatic assembly of ordinary light guide plates and light guide plates with FPC boards. It not only has a simple structure, ingenious design and low manufacturing cost, but also has a high degree of automation, saves manpower, has good versatility, and can reduce the processing cost of backlight sources to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 1 is a schematic diagram of the three-dimensional structure of an automatic assembly machine for a light guide plate with an FPC board provided by one embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0023] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0025] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosure of the present invention. It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there can also be a central component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there can also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the relevant listed items.

[0026] See also Figure 1 As shown, Figure 1 It is a three-dimensional structural schematic diagram of an automatic assembly machine for light guide plates with FPC boards provided by an embodiment of the present invention. In this embodiment, an automatic assembly machine for light guide plates with FPC boards includes a multi-axis robot 1, a light guide plate adsorption mechanism 2 and an assembly platform 3. The assembly platform 3 is used to place a light guide plate body 4. Two FPC boards 5 are connected to one side of the light guide plate body 4 at intervals. The light guide plate adsorption mechanism 2 is located above the assembly platform 3 and is connected to the power output shaft of the multi-axis robot 1. The multi-axis robot 1 is at least capable of performing translation, lifting and rotation in the direction of the U-shaped groove of the back plate on a plane parallel to the back plate. There are two through holes in the U-shaped groove on the back plate of the backlight source for passing the FPC board 5.

[0027] See also Figure 1 and Figure 2As shown, the light guide plate adsorption mechanism 2 includes an adsorption plate 20, two first adsorption blocks 21, two first connecting plates 22, two cylinders 23 and two second connecting plates 24. The bottom surface of the adsorption plate 20 serves as the adsorption surface, and a plurality of vacuum adsorption holes are provided on the adsorption surface. The arrangement of the adsorption plate can ensure the stability and reliability of the adsorption of the light guide plate body 4. A plurality of first fixing holes 25 are provided at intervals on one side of the end surface of the adsorption plate 20 close to the FPC board 5. The two second connecting plates 24 are all "L"-shaped structures as a whole. One end of the two second connecting plates 24 is fixed to the corresponding first fixing hole 25 by a fixing screw. The two cylinders 23 are fixed to the side of the corresponding second connecting plate 24. The connecting plates 22 are also of "L"-shaped structure as a whole. One end of the two first connecting plates 22 is respectively fixed to the driving end of the two cylinders 23. The two cylinders 23 drive the two first connecting plates 22 to perform lifting movements. The bottom surfaces of the two first adsorption blocks 21 serve as adsorption surfaces. The adsorption surfaces are provided with a number of vacuum adsorption holes arranged in a strip shape as a whole. Long first connecting holes 26 are opened on the two first adsorption blocks 21. The fixing bolts pass through the first connecting holes 26 to fix the two first adsorption blocks 21 to the corresponding first connecting plates 22. It is necessary to ensure that the spacing between the two first adsorption blocks 21 matches the spacing between the two FPC boards 5, that is, the two first adsorption blocks 21 can smoothly adsorb the corresponding FPC boards 5.

[0028] See also Figure 1 and Figure 3 As shown, the assembly platform 3 includes a transfer module 30, a stand 31, a table 32, two fixed blocks 33 and two second adsorption blocks 34. The bottom of the stand 31 is connected to the transfer module 30, and the overall movement of the assembly platform 3 is realized by the transfer module 30. A number of positioning blocks 35 for positioning the light guide plate body 4 are fixed on the table 32. A number of second fixing holes 36 are spaced apart at one side of the table of the assembly platform 3. The two fixing blocks 33 are provided with long second connecting holes 37. The fixing bolts pass through the second connecting holes 37 to fix the two fixing blocks 33 at intervals in the second fixing holes 36. One end of the two second adsorption blocks 34 is fixedly connected to the two fixed blocks 33. It is necessary to ensure that the spacing between the two second adsorption blocks 34 matches the spacing between the two FPC boards 5, that is, the two second adsorption blocks 34 can smoothly adsorb the corresponding FPC boards 5.

[0029] When the above-mentioned automatic light guide plate assembly machine automatically assembles a light guide plate without an FPC board (an ordinary light guide plate), the two first adsorption blocks 21 and the two second adsorption blocks 34 do not need to work. The specific actions of automatically assembling a light guide plate with an FPC board include the following steps:

[0030] 1) The light guide plate is automatically transferred to the assembly platform 3, and the two second adsorption blocks 34 adsorb and position the two FPC boards 5.

[0031] 2) The multi-axis manipulator 1 drives the light guide plate adsorption mechanism 2 to the top of the assembly platform 3. The adsorption plate 20 adsorbs the light guide plate body 4 on the assembly platform 3. The cylinder 23 extends to drive the two first adsorption blocks 21 to adsorb the two FPC boards 5, completing the adsorption and removal of the light guide plate. At this time, the two first adsorption blocks 21 are in the low position.

[0032] 3) The multi-axis manipulator 1 drives the light guide plate adsorption mechanism 2 to the assembly station, and then drives the adsorption plate 20 to rotate a certain angle. After the two FPC boards 5 are obliquely inserted through the through holes of the U-shaped groove of the back plate, the cylinder 23 retracts and drives the two first adsorption blocks 21 to rise to the high position to avoid the subsequent assembly of the light guide plate body 4.

[0033] 4) The multi-axis robot 1 first obliquely inserts one side of the light guide plate body 4 into the U-shaped groove of the back plate, and then gradually adjusts the adsorption plate 20 to a horizontal state to assemble the light guide plate body 4 on the back plate.

[0034] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to these examples. Various modifications and variations are possible without departing from the spirit and scope of the present invention. Such modifications and variations are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A light guide plate adsorption mechanism with an FPC board, characterized in that: These include, a main adsorption component configured to adsorb the main body of the light guide plate, At least one set of auxiliary adsorption components, the number and installation positions of the auxiliary adsorption components are set to match the number and positions of the FPC boards connected to the light guide plate, and the auxiliary adsorption components include a driving device and an auxiliary adsorption component, the auxiliary adsorption component is configured to adsorb the FPC board connected to the light guide plate, the driving device is connected to the auxiliary adsorption component, and after the FPC board is assembled, the driving device drives the auxiliary adsorption component to move and reset to avoid the automatic assembly of the main part of the light guide plate; The auxiliary adsorption assembly is mounted on the main adsorption component, the main adsorption component includes an adsorption plate, the adsorption plate is provided with an adsorption surface, and the adsorption surface is provided with a plurality of vacuum adsorption holes. The auxiliary adsorption component includes a first adsorption block, the first adsorption block is provided with a plurality of vacuum adsorption holes arranged in a strip shape as a whole. The driving device adopts a cylinder, the first adsorption block is fixedly connected to the piston rod of the cylinder through a first connecting plate, and the cylinder is fixedly connected to the adsorption plate through a second connecting plate. The first connecting plate and the second connecting plate are both "L"-shaped structures as a whole.

2. The light guide plate adsorption mechanism with FPC board according to claim 1, characterized in that: The first adsorption block is provided with a first long connecting hole, and a fixing bolt is passed through the first connecting hole to fix the first adsorption block to the first connecting plate.

3. A light guide plate assembly machine with an FPC board, characterized in that: It includes an assembly platform, an assembly drive device and the light guide plate adsorption mechanism described in any one of claims 1-2 above, the assembly platform includes a table for placing the main part of the light guide plate, and at least one second adsorption block extending outward is installed on one side of the table, and the second adsorption block is configured to adsorb the FPC board connected to the light guide plate. The light guide plate adsorption mechanism is connected to the driving end of the assembly drive device, and the assembly drive device drives the light guide plate adsorption mechanism to adsorb the light guide plate with the FPC board and rotate it to a certain angle to automatically assemble the light guide plate with the FPC board on the back panel.

4. The light guide plate assembly machine with FPC board according to claim 3, characterized in that: The second adsorption block includes a suction plate body and a fixing portion, the suction plate body is provided with a plurality of vacuum adsorption holes arranged in a strip shape as a whole, the fixing portion is vertically connected to the end of the suction plate body, and the fixing portion is provided with a long strip-shaped second connection hole.

5. The light guide plate assembly machine with FPC board according to claim 4, characterized in that: The assembly drive device adopts either a multi-axis manipulator or a multi-axis transplanting module.

6. The light guide plate assembly machine with FPC board according to claim 5, characterized in that: The multi-axis transplanting module includes a transverse movement module, a lifting module and a rotation module. The transverse movement module drives the light guide plate adsorption mechanism to move laterally, the lifting module drives the light guide plate adsorption mechanism to move up and down, and the rotation module drives the light guide plate adsorption mechanism to rotate a certain angle.

7. A method for assembling a light guide plate with an FPC board, characterized in that: Automatic assembly using the light guide plate assembly machine with FPC board according to any one of claims 3 to 6 comprises the following steps: The light guide plate adsorption mechanism automatically adsorbs the main part of the light guide plate and the FPC board through the main adsorption component and the auxiliary adsorption component. The assembly drive device rotates a certain angle to first insert the FPC board into and pass through the U-shaped groove of the back panel, and then the drive device of the auxiliary adsorption component drives the auxiliary adsorption component to move to avoid it. Finally, the assembly drive device drives the main adsorption component to automatically assemble one side of the main part of the light guide plate in the U-shaped groove of the back panel.

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