CN220913470U - Automatic positioning and attaching equipment for display panel - Google Patents

Abstract

The utility model discloses automatic positioning and laminating equipment for a display panel, which comprises a frame, wherein a first driving device of a first cylinder and second driving devices are arranged on the left side and the right side of the frame and positioned on the left side and the right side of the glass panel through the front side and the rear side of the frame, push plates are respectively arranged on push rods of the first driving device and the second driving device, two first sensors and two second sensors are arranged on the frame, and a plurality of suckers are arranged on a support frame at the free end of a multi-axis mechanical arm; the glass panel and the liquid crystal panel adopt the same datum point to carry out displacement positioning to the alignment process of each sensor does not need mechanical contact, and the stability of counterpoint is high, long service life, effectively reduces the tolerance ring of counterpoint, improves the degree of accuracy of laminating, and whole operation process is accomplished automatically, and less operating personnel guarantees the cleanliness factor in space when the operation, practices thrift the labour, effectively improves production efficiency, reduction in production cost, consequently satisfies user in-service use demand greatly.

Description

Automatic positioning and attaching equipment for display panel

Technical Field

The utility model relates to the technical field of automatic equipment, in particular to automatic positioning and attaching equipment for a display panel.

Background

As is well known, a liquid crystal display is an active matrix liquid crystal display driven by a thin film transistor, and mainly uses current to stimulate liquid crystal molecules to generate points, lines and surfaces to form pictures by matching with back lamps, IPS, TFT, SLCD belongs to the subclass of LCDs, and the working principle is that under the action of an electric field, the arrangement direction of the liquid crystal molecules is utilized to change (modulate) the light transmittance of an external light source so as to complete electro-optical conversion, and then different excitation of R, G, B three primary color signals is utilized to complete color reproduction of a time domain and a space domain through red, green and blue three primary color filter films; along with the teaching machine and the conference machine, the white board machine should be wider and wider, and the large-size liquid crystal display is widely popularized;

the LCD mainly comprises a shell, a control circuit board, a power supply, a LCD screen and the like, wherein the LCD screen is the most important component part, the LCD screen comprises a toughened glass panel, a liquid crystal panel, a backlight plate and the like on the outer surface, the toughened glass panel and the liquid crystal panel are required to be aligned and bonded into an integral structure in actual production, the bonding operation of the traditional toughened glass panel and the liquid crystal panel adopts manual positioning, namely, the toughened glass panel is firstly placed on a positioning platform, dozens of positioning blocks and positioning are placed around the toughened glass panel, then the liquid crystal panel is manually placed on the surface of the toughened glass panel, an opaque LCD area of the LCD panel is aligned and bonded with an inner window of the glass panel, and a plurality of operators are required to participate in the operation in carrying the materials due to the increasing size of the prior LCD, the positioning and attaching operation is performed by manual experience, the positioning block and the positioning platform are overlapped in multiple layers, the positioning reference of the toughened glass panel and the liquid crystal panel is different, the mechanical positioning error is larger, the alignment tolerance is unstable, the tolerance ring is more, the overall alignment tolerance is larger, the attaching skew probability of the toughened glass panel and the liquid crystal panel is larger, the light leakage phenomenon can be caused, the attaching consistency is worse by manual experience, more operators can cause larger probability of dust and hair in the attached screen, the yield is lower, the yield and the grade of products are lower, meanwhile, the existing liquid crystal display screen is larger, the labor intensity in the process of manually carrying the materials is higher, the labor cost is higher, the production efficiency is lower, the production cost of the products is improved, the productivity of the liquid crystal display production line is seriously affected, the production capacity and the product quality requirements of factories on production lines are higher and higher, and further, the existing operation devices and methods for aligning and attaching the toughened glass panel and the liquid crystal panel can not meet the actual use and production requirements of users, so that the defects are obvious, and therefore, the automatic positioning and attaching equipment for the display panel is provided for solving the problems.

Disclosure of utility model

In view of the foregoing drawbacks of the prior art, an object of the present utility model is to provide an automatic positioning and attaching apparatus for a display panel.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The automatic positioning and attaching equipment for the display panel comprises a frame and a multi-axis mechanical arm, wherein a glass panel is placed on a transmission roller of the frame, a first driving device capable of ascending and descending is installed on the left side and the right side of the frame and positioned on the right side of the glass panel through a first cylinder, a second driving device is installed on the front side and the rear side of the frame and positioned on the glass panel, push plates are installed on push rods of the first driving device and the second driving device, the push plates are matched with the side surfaces of the glass panel, two first sensors which are matched with the left side or the right side of the glass panel and are mutually aligned are arranged on the frame, two second sensors which are matched with the front side or the rear side of the glass panel and are mutually aligned are arranged on the frame, a support frame is arranged at the free end of the multi-axis mechanical arm, a plurality of suckers are arranged on the support frame, the suckers can absorb a liquid crystal panel, and a host machine for orderly working of a control system is arranged on the frame; after the first cylinder drives the first driving device to ascend, the push plate on the first driving device is aligned with the side surface of the glass panel in an adaptive manner.

Preferably, the liquid crystal display device further comprises a tooling table, wherein a positioning groove matched with the liquid crystal display panel is formed in the surface of the tooling table, a notch is formed in one side of the positioning groove, and the liquid crystal display panel is placed in the positioning groove.

Preferably, the support frame comprises an upper fixing plate, a middle fixing plate and a lower fixing plate, wherein the upper fixing plate is arranged at the free end of the multi-shaft mechanical arm, a first motor and a first sliding shaft are arranged on the upper fixing plate, a second motor is arranged on the middle fixing plate, a second sliding shaft perpendicular to the first sliding shaft is arranged on the lower fixing plate, the middle fixing plate is arranged on the first sliding shaft through a sliding block, a first rack parallel to the first sliding shaft is arranged on the middle fixing plate, a gear on a main shaft of the first motor is meshed with the first rack, a second rack parallel to the second sliding shaft is arranged on the lower fixing plate, the middle fixing plate is connected with the second sliding shaft through a sliding block, a gear on a main shaft of the second motor is meshed with the second rack, and the sucker is arranged on the lower fixing plate.

Preferably, a first limiting block, a first limit switch, a second limiting block and a second limit switch are arranged on the frame, the first limiting block and the first limit switch can be respectively matched and propped with the two ends of the push rod of one of the first driving devices, and the second limiting block and the second limit switch can be respectively matched and propped with the two ends of the push rod of one of the second driving devices.

Preferably, a soft rubber pad matched with the side surface of the glass panel is arranged on the pushing plate.

Preferably, the driving device is an air cylinder, a hydraulic cylinder, an electric cylinder and an electric push rod.

Preferably, the first sensor and the second sensor are laser correlation photoelectric switches or groove type photoelectric switches.

Preferably, the first cylinder is a double rod cylinder.

Attaching step of display panel

S1, conveying a glass panel to a preset position between a first driving device and a second driving device by a transmission roller of the frame;

S2, the first cylinder drives the first driving device to ascend and extend out, the push rod of the first driving device on the right side of the glass panel pushes the glass panel leftwards through the push plate, so that the black silk-screen area on the left side edge of the glass panel passes through the induction areas of the two first sensors, meanwhile, the push rod of the first driving device is propped against the rear end of the first limiting block, the push rod of the first driving device moves backwards to touch the first limiting switch and resets to stop moving, the push rod of the second driving device on the front side of the glass panel pushes the glass panel backwards through the push plate, the black silk-screen area on the rear side edge of the glass panel passes through the induction areas of the two second sensors, and meanwhile, the push rod of the second driving device moves backwards to touch the second limiting switch and resets to stop moving after propping against the second limiting block;

S3, pushing the glass panel rightward by the push rod of the first driving device on the left side of the glass panel through the push plate, simultaneously stopping pushing the glass panel to move when the left side of the inner view window of the glass panel is simultaneously contacted with the sensing areas of the two first sensors, completing positioning on the left side of the glass panel, pushing the glass panel forward by the push rod of the second driving device on the rear side of the glass panel through the push plate, and simultaneously stopping pushing the glass panel to move when the rear side of the inner view window of the glass panel is contacted with the sensing areas of the two second sensors, and completing positioning on the rear side of the glass panel;

S4, the sucker on the multi-axis mechanical arm moves to the upper end of the tooling table, and the multi-axis mechanical arm drives the sucker to move downwards, adsorbs a liquid crystal panel in the positioning groove and moves to the upper end of the glass panel;

S5, the multi-axis mechanical arm moves the adsorbed liquid crystal panel to the outer sides of the two first sensors and the two second sensor sensors, and the bottom surface of the liquid crystal panel is parallel to the top surface of the glass panel;

S6, the fixing plate is driven to move leftwards by the first motor, meanwhile, the liquid crystal panel is driven to move leftwards, when the left side edge of the opaque liquid crystal display area of the liquid crystal panel is simultaneously contacted with the sensing areas of the two first sensors, the first motor stops pushing the liquid crystal panel to move, the left side edge of the opaque liquid crystal display area of the liquid crystal panel is aligned with the left edge of the inward viewing window of the glass panel, the second motor drives the lower fixing plate to move backwards, meanwhile, the liquid crystal panel is driven to move backwards, and when the rear side edge of the opaque liquid crystal display area of the liquid crystal panel is simultaneously contacted with the sensing areas of the two second sensors, the second motor stops pushing the liquid crystal panel to move, the rear side edge of the opaque liquid crystal display area of the liquid crystal panel is aligned with the rear edge of the inward viewing window of the glass panel, and the liquid crystal panel is aligned with the glass panel accurately;

S6, the multi-axis mechanical arm vertically moves the adsorbed liquid crystal panel downwards, and enables the bottom surface of the liquid crystal panel to be attached to the top surface of the glass panel to form an integrated structure;

S7, the first cylinder drives the first driving device to descend and retract, and the transmission roller of the frame conveys the combination of the glass panel and the liquid crystal panel to the next station.

By adopting the scheme, compared with the prior art, the utility model has the following obvious advantages and beneficial effects:

1. The first sensor and the second sensor are fixed on the frame, the first driving device and the second driving device take the induction areas of the two first sensors and the second sensor as datum points on two adjacent sides of the glass panel, the driving device pushes the glass panel and the induction areas of the two first sensors and the second sensor to be accurately positioned, meanwhile, the multi-axis mechanical arm accurately positions the adsorbed liquid crystal panel and the induction areas of the first sensors and the second sensor, the glass panel and the liquid crystal panel adopt the same datum points for displacement positioning, the alignment process of the glass panel and the liquid crystal panel and the two first sensors and the second sensor does not need mechanical contact, the alignment stability is high, the service life is long, tolerance rings for alignment of the two are effectively reduced, the positioning error of the glass panel and the liquid crystal panel is greatly reduced, the bonding accuracy of the two is improved, light leakage caused by bonding of the two is effectively prevented, the mass alignment and the bonding consistency is effectively increased, and the bonding yield and the bonding grade of products are improved;

2. The whole glass panel is conveyed and accurately positioned, the operation processes of material moving, accurate alignment and lamination of the liquid crystal panel are fully automatically completed by adopting a host control system, errors and dust generated during personnel operation are effectively reduced, pollution of hair to products is effectively reduced, cleanliness of space is guaranteed during lamination operation of the whole glass panel, flaws and reject ratio after lamination operation are greatly reduced, meanwhile, only a small amount of operators are required to feed and discharge materials, labor intensity of workers is reduced, labor force is saved, labor cost is reduced, production efficiency is effectively improved, and production cost is reduced, so that actual use requirements of users are greatly met, productivity of a liquid crystal display production line is improved, the structure is simple, the manufacturing cost of the whole glass panel is low, lamination operation efficiency is high, and the glass panel has the substantial characteristics of protrusions and remarkable progress.

Drawings

Fig. 1 is an isometric view of an embodiment of the utility model.

Fig. 2 is a schematic structural view of a supporting frame according to an embodiment of the utility model.

Fig. 3 is a schematic structural view of a first limiting block according to an embodiment of the utility model.

Fig. 4 is a schematic diagram of alignment and lamination between a liquid crystal panel and a glass panel according to an embodiment of the present utility model.

Fig. 5 is a schematic view of the structure of a glass panel according to an embodiment of the present utility model.

Fig. 6 is a schematic structural diagram of a liquid crystal panel according to an embodiment of the utility model.

In the figure:

1. A frame; 2. a multi-axis mechanical arm; 3. a transmission roller; 4. a glass panel; 5. a first driving device; 6. a second driving device; 7. a push rod; 8. a push plate; 9. a first cylinder; 10. a first sensor; 11. a second sensor; 12. a support frame; 13. a suction cup; 14. a liquid crystal panel; 15. a host; 16. a tooling table; 17. a positioning groove; 18. a notch portion; 19. an upper fixing plate; 20. a middle fixing plate; 21. a lower fixing plate; 22. a first motor; 23. a first slide shaft; 24. a second motor; 25. a second slide shaft; 26. a slide block; 27. a first rack; 28. a second rack; 29. a first limiting block; 30. a first limit switch; 31. a second limiting block; 32. a second limit switch; 33. a soft rubber pad; 34. a black silk screen region; 35. an induction zone; 36. an inner view window; 37. an opaque liquid crystal display region; 38. edge regions.

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawings, but the utility model can be implemented in a number of different ways, which are defined and covered by the claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper end", "lower end", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Before the operation of the present embodiment is described, for the sake of easy understanding of the present embodiment, the liquid crystal panel 14 and the glass panel 4 will be described specifically: the liquid crystal panel 14 is generally formed of an opaque liquid crystal display region and four sides of a transparent edge region 38 (as shown in fig. 6) of the liquid crystal display region; the edge of the glass panel 4 is printed with an opaque black silk-screen region 34, the middle part is a transparent inner window 36 (as shown in fig. 5), four sides of an opaque liquid crystal display region 37 of the liquid crystal panel 14 need to be aligned and attached with four sides of the inner window 36 in the middle part of the glass panel 4 when the liquid crystal panel 14 is aligned and attached with the glass panel 4, so that when a user views a picture presented by a display, the picture displayed by the liquid crystal display region is completely presented in the inner window 36.

As shown in fig. 1 to 6, the automatic positioning and attaching device for a display panel provided in this embodiment includes a frame 1 and a multi-axis mechanical arm 2, a glass panel 4 is placed on a transmission roller 3 of the frame 1, a first driving device 5 capable of lifting is installed on the frame 1 and located at the left side and the right side of the glass panel 4 through a first cylinder 9, a second driving device 6 is installed on the frame 1 and located at the front side and the rear side of the glass panel 4, push plates 8 are installed on push rods 7 of the first driving device 5 and the second driving device 6, the push plates 8 are matched with the side surfaces of the glass panel 4, the push plates 8 on the first driving device 5 are matched with the side surfaces of the glass panel 4 after the first cylinder 9 drives the first driving device 5 to rise, two first sensors 10 matched with the left side or the right side of the glass panel 4 and aligned with each other are arranged on the frame 1, two second sensors 11 matched with the front side or the rear side of the glass panel 4 and aligned with each other are arranged on the frame 1, a plurality of liquid crystal sucking discs 13 are arranged on free ends 12 of the multi-axis mechanical arm 2, a plurality of sucking discs 13 are arranged on the frame 1, and a plurality of sucking discs 13 are arranged on the main frame 1 are arranged on the main frame 13; wherein the multi-axis mechanical arm 2 moves the liquid crystal panel 14, and makes four sides of the opaque liquid crystal display area 37 of the liquid crystal panel 14 aligned and attached with four sides of the inner window 36 in the middle of the glass panel 4.

In actual operation of the embodiment, because the first sensor 10 and the second sensor 11 sensor are fixed on the frame 1, the first driving device 5 and the second driving device 6 take the two adjacent sides of the glass panel 4 as reference points, the driving device pushes the sensing areas 35 of the two first sensors 10 and the second sensor 11 sensor to precisely position the glass panel 4 and the sensing areas 35 of the two first sensors 10 and the second sensor 11 sensor, and meanwhile, the multi-axis mechanical arm 2 precisely positions the opaque liquid crystal display area 37 of the adsorbed liquid crystal panel 14 and the sensing areas 35 of the two first sensors 10 and the second sensor 11 sensor respectively, so that the glass panel 4 and the liquid crystal panel 14 are displaced and positioned by adopting the sensing areas 35 of the two first sensors 10 and the second sensor 11 sensor as common reference points, thereby effectively reducing the positioning error of the glass panel 4 and the liquid crystal panel 14, improving the attaching accuracy of the two, effectively preventing the attaching of the two, and improving the attaching quality of products, and the attaching quality of the products; the whole glass panel 4 is conveyed and accurately positioned, the operation process of transferring and accurately aligning and attaching the liquid crystal panel 14 is fully automatically completed by adopting a host computer 15 control system, errors and dust generated during personnel operation and pollution of hair to products are effectively reduced, the cleanliness of space during whole machine attaching operation is guaranteed, flaws and reject ratio after attaching operation are greatly reduced, meanwhile, only a small amount of operators are required to feed and discharge, labor intensity of workers is reduced, labor force is saved, labor cost is reduced, production efficiency is effectively improved, production cost is reduced, and therefore practical use requirements of users are greatly met.

Further, the embodiment further comprises a tooling table 16, a positioning groove 17 adapted to the liquid crystal panel 14 is formed in the surface of the tooling table 16, a notch 18 is formed in one side of the positioning groove 17, and the liquid crystal panel 14 is placed in the positioning groove 17. Therefore, the liquid crystal panel 14 is accurately placed in the positioning groove 17, the fed liquid crystal panel 14 is initially positioned, the multi-axis mechanical arm 2 is convenient to accurately transfer the material of the liquid crystal panel 14, the consistency of the material transferring and positioning of the multi-axis mechanical arm 2 is improved, and the notch part 18 is convenient for the liquid crystal panel 14 to enter and exit the positioning groove 17.

Further, the support frame 12 of the present embodiment includes an upper fixing plate 19, a middle fixing plate 20, and a lower fixing plate 21, the upper fixing plate 19 is mounted on the free end of the multi-axis robot arm 2, a first motor 22 and a first slide shaft 23 are mounted on the upper fixing plate 19, a second motor 24 is mounted on the middle fixing plate 20, a second slide shaft 25 perpendicular to the first slide shaft 23 is mounted on the lower fixing plate 21, the middle fixing plate 20 is mounted on the first slide shaft 23 through a slider 26, a first rack 27 parallel to the first slide shaft 23 is mounted on the middle fixing plate 20, a gear on the main shaft of the first motor 22 is meshed with the first rack 27, a second rack 28 parallel to the second slide shaft 25 is mounted on the lower fixing plate 21, the middle fixing plate 20 is connected with the second slide shaft 25 through the slider 26, a gear on the main shaft of the second motor 24 is meshed with the second rack 28, and the suction cup 13 is mounted on the lower fixing plate 21. Therefore, when the liquid crystal panel 14 absorbed by the suction cup 13 of the multi-axis mechanical arm 2 moves to the upper end of the glass panel 4 after the positioning is completed, the first motor 22 drives the middle fixing plate 20 to move leftwards, and simultaneously drives the liquid crystal panel 14 to move leftwards, when the left side edge of the opaque liquid crystal display area 37 of the liquid crystal panel 14 contacts the sensing areas 35 of the two first sensors 10 simultaneously, the first motor 22 stops pushing the liquid crystal panel 14 to move, the left side edge of the opaque liquid crystal display area 37 of the liquid crystal panel 14 completes the alignment with the left edge of the inner viewing window 36 of the glass panel 4, the second motor 24 drives the lower fixing plate 21 to move backwards, and simultaneously drives the liquid crystal panel 14 to move backwards, and when the rear side edge of the opaque liquid crystal display area of the liquid crystal panel 14 contacts the sensing areas 35 of the two second sensors 11 simultaneously, the second motor 24 stops pushing the liquid crystal panel 14 to move, and the rear side edge of the opaque liquid crystal display area 37 of the liquid crystal panel 14 completes the alignment with the rear edge of the inner viewing window 36 of the glass panel 4, thus the alignment precision of the liquid crystal panel 14 and the glass panel 4 is improved, and the alignment precision of the liquid crystal panel 14 and the glass panel 4 is prevented.

Further, the frame 1 of the present embodiment is provided with a first limiting block 29, a first limiting switch 30, a second limiting block 31 and a second limiting switch 32, where the first limiting block 29 and the first limiting switch 30 can respectively adapt to and contact with two ends of the push rod 7 of one of the first driving devices 5, and the second limiting block 31 and the second limiting switch 32 can respectively adapt to and contact with two ends of the push rod 7 of one of the second driving devices 6. By means of the arrangement of the structure, the push rod 7 cups of the first driving device 5 and the second driving device 6 are accurately limited, the positioning accuracy of pushing the glass panel 4 by the push rod 7 is increased, the glass panel 4 is prevented from being pushed in transition, and the initial positioning consistency of the glass panel 4 and the alignment stability of the whole machine are increased.

Further, the push plate 8 of the present embodiment is provided with a soft rubber pad 33 adapted to the side surface of the glass panel 4. The setting of the soft rubber pad 33 can provide the friction force when the push plate 8 is propped against the side surface of the glass panel 4, so that the stability when the push plate 8 pushes the glass panel 4 to move is improved, and meanwhile, the soft rubber pad 33 is softer, and the material of the glass panel 4 is harder and more brittle, so that the soft rubber pad 33 can weaken the impact force of the push plate 8 touching the side surface of the glass panel 4, and the push plate 8 is prevented from crashing the glass panel 4.

Further, the driving device of the present embodiment is a cylinder, a hydraulic cylinder, an electric cylinder, and an electric push rod 7. The electric cylinder is a modularized product which integrates a servo motor and a screw rod, converts the rotary motion of the servo motor into linear motion, simultaneously converts the optimal advantage of the servo motor into accurate rotation speed control, accurate rotation number control, accurate torque control into accurate speed control, accurate position control and accurate thrust control, and realizes high-accuracy linear motion, so that the thrust output by the push rod 7 of the electric cylinder is not only large, but also accurate, and the electric cylinder is preferably used as a driving device.

Further, the first sensor 10 and the second sensor 11 of the present embodiment are laser correlation photoelectric switches or slot photoelectric switches. The opposite-irradiation photoelectric switch is a common photoelectric switch type, is widely applied to various automatic equipment, and is a device for realizing switch control by utilizing interaction between a laser beam and a photodiode. The method has wide application in the field of automatic control, such as object detection on industrial production lines, intrusion alarm in security systems and the like; the principle of laser-to-beam photoelectric switching is based on the characteristics of the laser beam and the response of the photodiodes to the optical signal. The laser beam has the characteristics of high brightness, high directivity, high monochromaticity and the like, and can be transmitted at a very small scattering angle, thereby ensuring the collimation and stability of the emitted light. The photodiode is a device capable of converting optical signals into electric signals, and the working principle of the photodiode is that when light irradiates a PN junction of the photodiode, generated photo-generated electrons and holes are separated under the action of an electric field, so that current is formed; the laser correlation photoelectric switch is realized by dividing a laser beam into two parts, namely an emitter and a receiver. The emitter emits a laser beam, which passes through a certain optical system to form a linear beam. The receiver is placed on the other side of the laser beam and is in line with the transmitter. When an object is located on the path of the laser beam, the object will scatter or absorb the laser beam, so that the optical signal received by the receiver will be weakened or vanished. At this time, the photodiode of the receiver cannot generate enough current, and the corresponding voltage signal will also change. By detecting the voltage signal of the receiver, whether an object shields the path of the laser beam or not can be judged; the working process of the laser correlation photoelectric switch is as follows, firstly, the emitter emits a laser beam, and the laser beam passes through the optical system to form a linear beam. The beam of light then encounters an object and is scattered or absorbed such that a portion of the light does not reach the receiver. The optical signal received by the receiver will correspondingly fade or disappear. The photodiode cannot generate enough current, resulting in a change in the receiver voltage signal. Finally, judging whether an object shields the path of the laser beam or not by detecting the change of the voltage signal of the receiver; the laser correlation photoelectric switch has the advantages that firstly, the collimation and the stability of the laser beam enable the light beam to be transmitted in a long distance, and the detection distance of the switch is improved. And secondly, the detection precision of the laser correlation photoelectric switch on the object is high, and the detection on the smaller object can be realized. In addition, the response speed of the laser to the photoelectric switch is high, the state of an object can be monitored in real time, and corresponding control is performed. Therefore, when the alignment part of the glass panel 4 and the liquid crystal panel 14 touches the emitter of the laser-beam-opposite photoelectric switch to emit a laser beam, the receiver of the laser-beam-opposite photoelectric switch immediately senses that the space between the emitter and the receiver of the laser-beam-opposite photoelectric switch is the sensing area 35 of the second sensor 11 and the second sensor 11, the diameter of the laser beam emitted by the emitter of the photoelectric switch is very small, generally 0.1 mm to 0.5 mm, and when the alignment edge of the glass panel 4 and the liquid crystal panel 14 touches the emitter of the photoelectric switch to emit a laser beam, the glass panel 4 and the liquid crystal panel 14 immediately stop moving and complete positioning, so that the alignment precision of the glass panel 4 and the liquid crystal panel 14 and the second sensor 11 is very high; meanwhile, compared with the traditional mechanical switch, the glass panel 4 and the liquid crystal panel 14 are in non-contact trigger alignment with the photoelectric switch in the alignment process of the two first sensors 10 and the second sensor 11, so that abrasion and faults caused by mechanical contact can be avoided, the service life is longer, the photoelectric switch is easy to install and use, and the photoelectric switch is convenient to install and can be arranged in a narrow space due to the fact that the photoelectric switch adopts an optical signal transmission mode and is not influenced by electromagnetic interference, and therefore the system design is more flexible, and the photoelectric switch is used as the first sensor 10 and the first sensor 10 in a preferable mode.

Further, the first cylinder 9 of the present embodiment is a double rod cylinder. The double-shaft double-rod cylinder consists of a cylinder body, a cylinder cover, a rod joint and other parts. Due to the structural characteristics, parallel bidirectional movement can be realized in a smaller volume, and compared with a single-shaft single-rod cylinder, the double-shaft double-rod cylinder has obvious advantages: the stability is good, in the automatic production field, precision and stability are important indexes, the adoption of parallel bidirectional movement of the double-shaft double-rod cylinder can ensure the stability in the working process, and the shaking caused by uneven stress is avoided; the precision is high, the high-precision processing needs pneumatic equipment with high precision, and the double-shaft double-rod cylinder is the equipment capable of meeting the requirements, and the positioning precision can reach 0.05 millimeter due to parallel movement, so that the requirements of fine assembly and production can be met; the speed is fast, in automated production, production rhythm's speed to a great extent has decided product quality and production efficiency, because biax twin-rod cylinder possesses two-way motion ability, so speed is faster in the course of the work, has practiced thrift production time, also can improve production efficiency and production line throughput simultaneously, consequently the preferred use of twin-rod cylinder as first cylinder 9.

Attaching step of display panel

S1, a transmission roller 3 of a frame 1 conveys a glass panel 4 to a preset position between a first driving device 5 and a second driving device 6;

S2, the first cylinder 9 drives the first driving device 5 to ascend and extend, the push rod 7 of the first driving device 5 on the right side of the glass panel 4 pushes the glass panel 4 leftwards through the push plate 8, the black silk-screen area 34 on the left side edge of the glass panel 4 passes through the sensing area 35 of the first sensor 10, meanwhile, after the push rod 7 of the first driving device 5 is propped against the first limiting block 29, the push rod 7 of the first driving device 5 is backwards moved to touch the first limiting switch 30 and reset to stop moving, so that the push plate 8 on the push rod 7 of the second driving device 6 is matched with the glass panel 4, the push rod 7 of the second driving device 6 on the front side of the glass panel 4 pushes the glass panel 4 backwards through the push plate 8, the black silk-screen area 34 on the rear side edge of the glass panel 4 passes through the sensing area 35 of the second sensor 11, and meanwhile, after the push rod 7 of the second driving device 6 is propped against the second limiting block 31, the push rod 7 of the second driving device 6 is backwards moved to touch the second limiting switch 32 and reset to stop moving;

S3, pushing the glass panel 4 rightward by the push rod 7 of the first driving device 5 on the left side of the glass panel 4 through the push plate 8, stopping pushing the glass panel 4 to move when the left side of the inner view window 36 of the glass panel 4 simultaneously touches the sensing areas 35 of the two first sensors 10, positioning the left side of the glass panel 4, pushing the glass panel 4 forward by the push rod 7 of the second driving device 6 on the rear side of the glass panel 4 through the push plate 8, stopping pushing the glass panel 4 to move when the rear side of the inner view window 36 of the glass panel 4 simultaneously touches the sensing areas 35 of the two second sensors 11, and positioning the rear side of the glass panel 4;

S4, the sucker 13 on the multi-axis mechanical arm 2 moves to the upper end of the tooling table 16, and the multi-axis mechanical arm 2 drives the sucker 13 to move downwards and adsorbs the liquid crystal panel 14 in the positioning groove 17 to the upper end of the glass panel 4;

s5, the multi-axis mechanical arm 2 moves the adsorbed liquid crystal panel 14 to the outer sides of the sensors of the first sensor 10 and the second sensor 11, and enables the bottom surface of the liquid crystal panel 14 to be parallel to the top surface of the glass panel 4;

s6, the fixing plate 20 is driven by the first motor 22 to move leftwards, meanwhile, the liquid crystal panel 14 is driven to move leftwards, when the left side edge of the opaque liquid crystal display area 37 of the liquid crystal panel 14 is simultaneously contacted with the sensing areas 35 of the two first sensors 10, the first motor 22 stops pushing the liquid crystal panel 14 to move, the left side edge of the opaque liquid crystal display area 37 of the liquid crystal panel 14 is aligned with the left edge of the inward viewing window 36 of the glass panel 4, the second motor 24 drives the lower fixing plate 21 to move backwards, meanwhile, the liquid crystal panel 14 is driven to move backwards, and when the rear side edge of the opaque liquid crystal display area of the liquid crystal panel 14 is simultaneously contacted with the sensing areas 35 of the two second sensors 11, the second motor 24 stops pushing the liquid crystal panel 14 to move, and the rear side edge of the opaque liquid crystal display area 37 of the liquid crystal panel 14 is aligned with the rear edge of the inward viewing window 36 of the glass panel 4, and the liquid crystal panel 14 is aligned with the glass panel 4 accurately;

S6, the multi-axis mechanical arm 2 vertically moves the adsorbed liquid crystal panel 14 downwards, and enables the bottom surface of the liquid crystal panel 14 to be attached to the top surface of the glass panel 4 to form an integrated structure;

S7, the first cylinder 9 drives the first driving device 5 to descend and retract, so that the first driving device 5 is located in the frame and lower than the transmission roller 3, movement of the glass panel 4 is not blocked, smooth conveying of the glass by the transmission roller 3 is guaranteed, and finally, the transmission roller 3 of the frame 1 conveys a combination of the glass panel 4 and the liquid crystal panel 14 to the next station.

The steps control each system to orderly work through the host computer 15, and then realize full-automatic laminating operation of the liquid crystal panel 14 and the glass panel 4, only a small amount of operators are needed for feeding and discharging, labor intensity of workers is reduced, labor force is saved, labor cost is reduced, production efficiency is effectively improved, production cost is reduced, actual production requirements of users are effectively met, various defects of laminating operation of the existing liquid crystal panel 14 and the glass panel 4 are overcome, and automatic upgrading of laminating operation on a liquid crystal display production line is realized.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (8)

1. An automatic positioning laminating device of a display panel, which is characterized in that: the device comprises a frame and a multi-axis mechanical arm, wherein a glass panel is placed on a transmission roller of the frame, a first driving device capable of ascending and descending is installed on the left side and the right side of the glass panel through a first cylinder, a second driving device is installed on the frame and on the front side and the rear side of the glass panel, push plates are installed on push rods of the first driving device and the second driving device, the push plates are matched with the side surfaces of the glass panel, two first sensors which are matched with the left side or the right side of the glass panel and are mutually aligned are arranged on the frame, two second sensors which are matched with the front side or the rear side of the glass panel and are mutually aligned are arranged on the frame, a support frame is arranged at the free end of the multi-axis mechanical arm, a plurality of suckers are arranged on the support frame, the suckers can absorb the liquid crystal panel, and a host computer for orderly working of a control system is arranged on the frame; after the first cylinder drives the first driving device to ascend, the push plate on the first driving device is aligned with the side surface of the glass panel in an adaptive manner.

2. The automatic positioning and attaching device for a display panel according to claim 1, wherein: still include the frock table, the constant head tank with the liquid crystal display panel adaptation has been seted up to the surface of frock table, one side of constant head tank is provided with the notch portion, liquid crystal display panel places in the constant head tank.

3. The automatic positioning and attaching device for display panels as defined in claim 1 or 2, wherein: the support frame includes fixed plate, well fixed plate and lower fixed plate, go up the fixed plate and install the free end at multiaxis arm, go up and install first motor and first slide on the fixed plate, install the second motor on the well fixed plate, install the second slide with first slide vertically on the fixed plate down, well fixed plate passes through the slider and installs on first slide, install the first rack parallel with first slide on the well fixed plate, the epaxial gear of main and the first rack meshing of first motor, the second rack parallel with the second slide is installed to the fixed plate down, well fixed plate passes through the slider and is connected with the second slide, epaxial gear and the second rack meshing of main of second motor, the sucking disc is installed on lower fixed plate.

4. The automatic positioning and attaching device for a display panel according to claim 1, wherein: the frame is provided with a first limiting block, a first limit switch, a second limiting block and a second limit switch, the first limiting block and the first limit switch can be respectively matched and propped with the two ends of the push rod of one of the first driving devices, and the second limiting block and the second limit switch can be respectively matched and propped with the two ends of the push rod of one of the second driving devices.

5. The automatic positioning and attaching device for a display panel according to claim 1, wherein: the push plate is provided with a soft rubber pad which is matched with the side surface of the glass panel.

6. The automatic positioning and attaching device for a display panel according to claim 1, wherein: the driving device is an air cylinder, a hydraulic cylinder, an electric cylinder and an electric push rod.

7. The automatic positioning and attaching device for a display panel according to claim 1, wherein: the first sensor and the second sensor are laser correlation photoelectric switches or groove-type photoelectric switches.

8. The automatic positioning and attaching device for a display panel according to claim 1, wherein: the first cylinder is a double-rod cylinder.