Lamp strip assembling equipment

Abstract

The invention relates to the field of liquid crystal products, in particular to lamp strip assembling equipment, a first feeding assembly comprises a first transferring assembly, a film tearing assembly and a cutting assembly, the film tearing assembly drives a light guide plate to move in the first direction, and film tearing is completed; the assembling assembly is provided with a feeding station and an assembling station and comprises a first carrying plate, a first driving device for driving the first carrying plate to move between the feeding station and the assembling station, and a pressing assembly arranged over the assembling station; the first mechanical arm is connected with a first suction cup. Wherein during assembling, the first mechanical arm drives the light guide plate to rotate by less than 45 degrees, and when the edge of the light guide plate abuts against the edge of the lamp bead, the first mechanical arm reversely rotates to reset and then abuts against the adhesive tape downwards along the edge of the lamp bead, so that attaching assembling is completed. Through automatic setting, the whole process of feeding of the light guide plate, film tearing, assembling of the light guide plate and the lamp strip and the like is automatically operated, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal products, and in particular to a light strip assembly device. Background Art

[0002] In the assembly of the backlight source of the LCD panel, the light strip needs to be bonded to the light guide plate. How to position the light strip and the light guide plate, ensure that the two do not shift during the tape pressing process, and make the assembled product gap-free are the difficulties of assembly. If it is not good, it will cause a gap between the light strip and the light guide plate, thereby affecting the brightness of the backlight module. However, at present, the assembly of the light strip and the light guide plate is performed by auxiliary personnel, and the yield and efficiency are greatly affected by the subjectivity of the personnel. In addition, there is also equipment for assembling the light guide plate and the light strip, which fixes the light guide plate, drives the light strip to move to the light guide plate and assembles it, but the light strip is long and soft. When picking up the light strip, it may be slightly bent, which will cause it to be unable to accurately fit with the light guide plate when assembling it, resulting in a gap.

[0003] Therefore, how to improve the assembly efficiency and quality stability of the light strip and the light guide plate is an issue that those skilled in the art need to consider. Summary of the invention

[0004] The purpose of the present invention is to provide a light strip assembly device to solve the problems of low efficiency and unstable quality in the assembly of light strips and light guide plates in the prior art.

[0005] The technical solution of the present invention is: a light strip assembly device, comprising: The first loading component includes a first transfer component, a film tearing component and a cutting component, wherein the film tearing component drives the light guide plate to move in a first direction and completes film tearing; the first transfer component picks up the light guide plate after film tearing and transfers it to a pre-positioning station; wherein the first transfer component drives the light guide plate to move in the first direction synchronously with the film tearing component, so that the protective film between two adjacent light guide plates is directly above the cutting component, and the cutting component cuts the protective film; An assembly assembly is provided with a loading station and an assembly station, including a first carrier plate, a first driving device for driving the first carrier plate to move between the loading station and the assembly station, and a pressing assembly arranged directly above the assembly station; The first robotic arm is connected to a first suction cup, which sucks the light guide plate at the pre-positioning station through the first suction cup and transfers it to the assembly station for assembly with the light strip; wherein, during assembly, the first robotic arm drives the light guide plate to rotate less than 45°, and when the edge of the light guide plate presses against the edge of the lamp bead, the first robotic arm rotates in the opposite direction to reset, and then presses the tape downward along the edge of the lamp bead to complete the attachment assembly.

[0006] Preferably, the first carrier plate comprises a loading portion and a limiting portion, the limiting portion protrudes from the loading portion, and a side of the limiting portion close to the loading portion is a vertical plane; the light strip is placed on the loading portion; During assembly, the light guide plate first contacts the lamp beads so that the side of the lamp strip contacts the limiting portion, and then moves downward to adhere to the tape.

[0007] Preferably, a plurality of negative pressure holes are provided at the loading portion, and the light strip covers the negative pressure holes when placed.

[0008] Preferably, the clamping assembly includes a roller and a second driving device for driving the roller to move, and the second driving device drives the roller to move along the length direction of the carrier plate, to contact and roll on the light guide plate, so as to increase the adhesion between the light guide plate and the light strip.

[0009] Preferably, the film tearing assembly includes a second carrier plate, the upper end of which is provided with a first winding wheel, a pressure wheel and a pressing device, and the lower end is provided with a second winding wheel; the light guide plate moves in the first direction on the second carrier plate, and passes under the pressing device and the pressure wheel in turn, the small film on the upper surface of the light guide plate bypasses the pressure wheel upward and is wound up by the first winding wheel, and the lower film on the lower surface bypasses the edge of the second carrier plate downward and is wound up by the second winding wheel; the first winding wheel and the second winding wheel move synchronously and drive the light guide plate to move in the first direction.

[0010] Preferably, the cutting assembly comprises a cutter and a third driving device for driving the cutter to move in a horizontal direction perpendicular to the first direction.

[0011] Preferably, the first feeding assembly further comprises a limiting assembly, and the limiting assembly is arranged on a side of the cutting assembly away from the film tearing assembly; the light guide plate stops when it moves in the first direction until it contacts the limiting assembly to complete the positioning.

[0012] Preferably, a pre-positioning component is provided at the pre-positioning station, and the pre-positioning component includes two third carrier plates and a plurality of positioning rods. When the light guide plate is at the pre-positioning station, both ends are overlapped on the two third carrier plates; the plurality of positioning rods move toward each other around the light guide plate and contact the edge of the light guide plate to achieve pre-positioning.

[0013] Preferably, a first visual component is arranged directly above the assembly station, and a second visual component is arranged below the assembly station; the first visual component positions the light strip at the assembly station, and the second visual component positions the light guide plate picked up by the first robotic arm.

[0014] Compared with the prior art, the advantages of the present invention are: (1) Through automated settings, the entire process of light guide plate loading, film tearing, and assembly with the light strip is automated, greatly improving production efficiency; (2) The light strip is fixed and the light guide plate is driven to move and assemble with the light strip. Even if the light strip is bent or wrinkled, the light guide plate can be driven to push the light strip to correct it, thus avoiding incomplete fitting with the light strip. (3) During assembly, the light guide plate is driven to tilt and its edge first contacts the lamp beads of the light strip, so that the light strip is pressed against the limiting part, and the light strip is pressed and positioned to achieve a close fit with the lamp beads; then, the light strip is rotated in the opposite direction and reset, and then moved downward to press the tape. Even if there are wrinkles on the light strip, they are pressed and flattened, further ensuring the effective fit between the light strip and the light guide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the light strip assembly device of the present invention; Figure 2 It is a front view structural schematic diagram of the first feeding assembly of the present invention; Figure 3 It is a structural schematic diagram of the pre-positioning component of the present invention; Figure 4 is a structural schematic diagram of the first carrier board of the present invention; Figure 5 This is a schematic diagram of the structure of the first carrier board of the present invention when the light strip is placed; Figure 6 This is a schematic diagram of the structure of the first feeding assembly of the present invention when tearing the film; Figure 7 It is a schematic diagram of the structure of the light strip and the light guide plate when assembled according to the present invention.

[0016] Wherein: a first loading assembly 1, a first transfer assembly 11, a second suction cup 111, a film tearing assembly 12, a second carrier plate 121, a first winding wheel 122, a clamping wheel 123, a pressing device 124, a second winding wheel 125, a cutting assembly 13, a cutter 131, a third driving device 132, a stopper assembly 14, and a stopper plate 141; Pre-positioning assembly 2, pre-positioning station 2a, the third carrier plate 21, the positioning rod 22; Assembly assembly 3, loading station 3a, assembly station 3b, first carrier 31, loading portion 311, limiting portion 312, negative pressure hole 313, first driving device 32, clamping assembly 33, second driving device 331, driving roller 332, first visual assembly 34, second visual assembly 35; First mechanical arm 4, first suction cup 41; Light guide plate 5; Light strip 6, light beads 61, and adhesive tape 62. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with specific embodiments: The present invention is applied to the assembly process of the light strip 6 and the light guide plate 5 in the manufacturing process of the liquid crystal display. There are protective films on the upper and lower surfaces of the light guide plate, wherein the upper protective film is composed of an upper film and a long strip of small film close to the edge of the light guide plate. Before assembling with the light strip, the lower film and the upper small film need to be torn off, and the upper film between the two light guide plates needs to be cut off. The light strip 6 is long and includes an adhesive tape 62 and lamp beads 61. The lamp beads are arranged in a straight line and protrude from the adhesive tape. When the light strip is assembled with the light guide plate, the adhesive tape is attached to the surface of the light guide plate, and the lamp beads are attached to the side of the light guide plate. Specifically: like Figure 1 , Figure 2 and Figure 6 As shown, a light strip assembly device includes: a first loading component 1, the first loading component 1 includes a first transfer component 11, a film tearing component 12 and a cutting component 13.

[0018] The film tearing assembly 12 includes a second carrier plate 121, the upper end of which is provided with a first winding wheel 122, a pinch wheel 123 and a material pressing device 124, and the lower end of which is provided with a second winding wheel 125. The light guide plate moves in the first direction on the second carrier plate 121, and passes under the material pressing device 124 and the pinch wheel 123 in sequence. The small film on the upper surface of the light guide plate goes around the pinch wheel 123 upwards and is rolled up by the first winding wheel 122, and the film tearing of the small film is completed at the same time; the lower film on the lower surface goes around the edge of the second carrier plate 121 downwards and is rolled up by the second winding wheel 125, and the film tearing of the lower film is completed at the same time; the first winding wheel 122 and the second winding wheel 125 move synchronously, and driven by the second winding wheel, the light guide plate moves in the first direction.

[0019] In this embodiment, the material of the light guide plate is a plurality of light guide plates stacked on each other, and the plurality of light guide plates are connected to each other through a protective film. The first winding wheel 122 winds up the small film at the upper end of the light guide plate. The second winding wheel 125 winds up the lower film below the light guide plate, and while winding up, drives the light guide plate to move in the first direction.

[0020] The conduit plate moves in the first direction until it protrudes from the second carrier plate 121 and stops when the end thereof contacts the limit plate 141 of the limit assembly 14. At the same time, the material pressing device 124 presses the light guide plate downward to the second carrier plate 121 to stabilize the light guide plate in position. Afterwards, the second suction cup 111 on the first transfer assembly 11 absorbs the light guide plate and continues to move in the first direction until the protective film between the adjacent light guide plates is directly above the cutting assembly 13. The cutter 131 moves in a direction perpendicular to the first direction under the drive of the third drive device 132 to cut off the protective film. At this time, the upper film is cut off. After cutting, the light guide plate is transferred to the pre-positioning station 2a under the drive of the first transfer assembly 11.

[0021] like Figure 3 As shown, a pre-positioning assembly 2 is provided at the pre-positioning station 2a, and the pre-positioning assembly 2 includes two third carriers 21 and a plurality of positioning rods 22. When the light guide plate is at the pre-positioning station 2a, both ends are overlapped on the two third carriers 21; the plurality of positioning rods 22 move toward each other around the light guide plate and contact the edge of the light guide plate to achieve pre-positioning. In this embodiment, the positioning rods 22 on different sides of the light guide plate are provided with corresponding driving devices, which is a prior art and will not be described in detail in this embodiment.

[0022] like Figure 4 , Figure 5 and Figure 7 As shown, the assembly assembly 3 is provided with a loading station 3a and an assembly station 3b, and further includes a first carrier plate 31, a first driving device 32 for driving the first carrier plate 31 to reciprocate between the loading station 3a and the assembly station 3b, and a clamping assembly 33 arranged just above the assembly station 3b. The first carrier plate 31 includes a loading portion 311 and a limiting portion 312, the limiting portion 312 protrudes from the loading portion 311, and the side of the limiting portion 312 close to the loading portion 311 is a vertical plane; a plurality of negative pressure holes 313 are provided at the loading portion 311, and the negative pressure holes 313 are covered when the light strip is placed.

[0023] In this embodiment, two groups of first carrier plates 31 can be provided, and two groups of corresponding first driving devices 32 are also provided, and materials can be alternately loaded to further improve production efficiency. When the first carrier plate 31 is at the loading station 3a, it can be loaded manually or by other equipment, and the light strip is placed on the upper end of the loading part 311, and is pressed against the limiting part 312 as much as possible, and at the same time, it is adsorbed by the negative pressure hole 313 below; then, it is transported to the assembly station 3b under the drive of the first driving device 32. The first suction cup 41 on the first mechanical arm 4 absorbs the light guide plate at the pre-positioning station 2a and transfers it to the assembly station 3b; during assembly, the first mechanical arm drives the light guide plate to rotate a certain angle, so that the light guide plate is in the tilting device, and the straight line where its side is located is horizontal, and then drives the side of the light guide plate to contact the edge of the lamp bead; then reversely rotate and reset, so that the light guide plate is in a horizontal state; finally, vertically downward along the edge of the lamp bead, while slightly moving toward the lamp bead to press the tape and the lamp bead, and adhere to each other with the tape, and complete the attachment assembly. When the light guide plate is tilted to contact the light strip, the side of the light strip contacts the limiting part and the bottom contacts the loading part, which is equivalent to positioning the light strip and increasing the accuracy of subsequent attachment.

[0024] After assembly, the light guide plate is in a stationary state, and the second driving device 331 of the clamping assembly 33 drives the roller 332 to move along the length direction of the carrier plate, abutting and rolling on the light guide plate to press the light guide plate and increase the adhesion between the light guide plate and the light strip.

[0025] In addition, to further increase the accuracy of assembly, a first visual component 34 is provided just above the assembly station 3b, and a second visual component 35 is provided below. The first visual component 34 positions the light strip at the assembly station 3b, and the second visual component 35 positions the light guide plate picked up by the first robot 4. During assembly, the position of the light guide plate can be adjusted according to the positioning data to accurately connect with the light strip.

[0026] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A light strip assembly device, characterized in that: include: The first loading component includes a first transfer component, a film tearing component and a cutting component, wherein the film tearing component drives the light guide plate to move in a first direction and completes film tearing; the first transfer component picks up the light guide plate after film tearing and transfers it to a pre-positioning station; wherein the first transfer component drives the light guide plate to move in the first direction synchronously with the film tearing component, so that the protective film between two adjacent light guide plates is directly above the cutting component, and the cutting component cuts the protective film; An assembly assembly is provided with a loading station and an assembly station, including a first carrier plate, a first driving device for driving the first carrier plate to move between the loading station and the assembly station, and a pressing assembly arranged directly above the assembly station; The first robotic arm is connected to a first suction cup, which sucks the light guide plate at the pre-positioning station through the first suction cup and transfers it to the assembly station for assembly with the light strip; wherein, during assembly, the first robotic arm drives the light guide plate to rotate less than 45°, and when the edge of the light guide plate presses against the edge of the lamp bead, the first robotic arm rotates in the opposite direction to reset, and then presses the tape downward along the edge of the lamp bead to complete the attachment assembly.

2. The light strip assembly device according to claim 1, characterized in that: The first carrier plate includes a loading portion and a limiting portion, wherein the limiting portion protrudes from the loading portion, and a side of the limiting portion close to the loading portion is a vertical plane; the light strip is placed on the loading portion; During assembly, the light guide plate first contacts the lamp beads so that the side of the lamp strip contacts the limiting portion, and then moves downward to adhere to the tape.

3. The light strip assembly device according to claim 2, characterized in that: The loading portion is provided with a plurality of negative pressure holes, and the light strip covers the negative pressure holes when placed.

4. The light strip assembly device according to claim 1, characterized in that: The clamping assembly includes a roller and a second driving device for driving the roller to move. The second driving device drives the roller to move along the length direction of the carrier plate, to contact and roll on the light guide plate, so as to increase the adhesion between the light guide plate and the light strip.

5. The light strip assembly device according to claim 1, characterized in that: The film tearing assembly includes a second carrier plate, the upper end of which is provided with a first winding wheel, a pressure wheel and a pressing device, and the lower end is provided with a second winding wheel; the light guide plate moves in the first direction on the second carrier plate, and passes under the pressing device and the pressure wheel in turn, the small film on the upper surface of the light guide plate bypasses the pressure wheel upward and is wound up by the first winding wheel, and the lower film on the lower surface bypasses the edge of the second carrier plate downward and is wound up by the second winding wheel; the first winding wheel and the second winding wheel move synchronously and drive the light guide plate to move in the first direction.

6. The light strip assembly device according to claim 5, characterized in that: The cutting assembly includes a cutter and a third driving device for driving the cutter to move in a horizontal direction perpendicular to the first direction.

7. The light strip assembly device according to claim 5, characterized in that: The first feeding assembly also includes a limiting assembly, which is arranged on a side of the cutting assembly away from the film tearing assembly; the light guide plate stops when it moves in the first direction until it contacts the limiting assembly to complete the positioning.

8. The light strip assembly device according to claim 1, characterized in that: A pre-positioning component is provided at the pre-positioning station, and the pre-positioning component includes two third carrier plates and a plurality of positioning rods. When the light guide plate is at the pre-positioning station, both ends are overlapped on the two third carrier plates; the plurality of positioning rods move toward each other around the light guide plate and contact the edge of the light guide plate to achieve pre-positioning.

9. The light strip assembly device according to claim 1, characterized in that: A first visual component is arranged directly above the assembly station, and a second visual component is arranged below the assembly station; the first visual component positions the light strip at the assembly station, and the second visual component positions the light guide plate picked up by the first robotic arm.

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