Visual laminating machine

Abstract

The utility model relates to the technical field of laminating machines, and discloses a visual laminating machine which comprises a rack, a first feeding device, a first conveying line, a dispensing device, a second feeding device, a second conveying line and a laminating device, the first feeding device and the first conveying line are arranged on the rack, and the first feeding device is located on the upstream of the first conveying line and used for conveying liquid crystal screens to the first conveying line one by one; the dispensing device is arranged on the rack, is positioned above the first conveying line and is used for gluing the liquid crystal display on the first conveying line; the second feeding device and the second conveying line are arranged on the rack, and the second feeding device is located on the upstream of the second conveying line and used for conveying the glass cover plates to the second conveying line one by one; and the laminating device is arranged on the rack, is positioned at the downstream of the dispensing device, and is used for grabbing the glass cover plate on the second conveying line and aligning and laminating the glass cover plate on the glued liquid crystal screen on the first conveying line. The visual laminating machine provided by the utility model can solve the problem of how to improve the production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of laminating machine technology, specifically to a visual laminating machine. Background Technology

[0002] In recent years, with the development of automation technology, the bonding method for glass covers and LCD screens has gradually transitioned from manual to automated machine bonding. The introduction of automation technology aims to improve production efficiency and ensure product quality. However, despite this trend, the technology and functionality of existing bonding machines on the market still have certain limitations.

[0003] Currently, most laminating machines on the market still use a semi-automatic production method, requiring manual loading and unloading operations. Furthermore, some laminating machines lack integrated dispensing devices. This means that before lamination, the LCD screen must first be dispensed onto a separate dispensing machine. After dispensing, the glass cover and the dispensed LCD screen are manually transferred to the laminating machine for alignment and bonding. This process involves numerous manual interventions, which not only reduces production efficiency but also introduces errors due to human factors, affecting the accuracy and consistency of the lamination.

[0004] Therefore, in order to overcome the limitations of existing laminating machines, improve production efficiency, and ensure product quality, it is particularly important to develop a vision laminating machine that can automatically complete the entire process from dispensing to lamination. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This invention provides a visual bonding machine, which can at least solve the technical problem of how to improve production efficiency.

[0007] (II) Technical Solution

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a visual bonding machine, comprising:

[0009] frame;

[0010] The first feeding device and the first conveyor line are mounted on the frame. The first feeding device is located upstream of the first conveyor line and is used to feed the LCD screens one by one onto the first conveyor line. The first conveyor line is used to feed the LCD screens.

[0011] The dispensing device is mounted on the frame and located above the first conveyor line. The dispensing device is used to apply glue to the LCD screen on the first conveyor line.

[0012] The second feeding device and the second conveyor line are mounted on the frame. The second feeding device is located upstream of the second conveyor line and is used to feed the glass cover plates one by one onto the second conveyor line. The second conveyor line is used to feed the glass cover plates.

[0013] The bonding device is mounted on the frame and located downstream of the dispensing device. The bonding device is used to grab the glass cover plate on the second conveyor line and align and press it onto the glued LCD screen on the first conveyor line.

[0014] Further, both the aforementioned first feeding device and second feeding device include:

[0015] The storage rack is mounted on the frame and has a storage space for stacking and accommodating LCD screens or glass covers. The storage rack has a discharge port on the side facing the first or second conveyor line. The discharge port is connected to the storage space and is opposite to the position of the lowest LCD screen or glass cover in the storage space.

[0016] The material pushing mechanism is located on the frame and is used to push the bottom layer of LCD screen or glass cover in the storage space from the discharge port to the first conveyor line or the second conveyor line.

[0017] Further, the aforementioned pushing mechanism includes:

[0018] The push plate is positioned opposite the discharge port, and the thickness of the push plate is no greater than the thickness of the LCD screen or glass cover.

[0019] The push plate drive is mounted on the frame and is connected to the push plate drive. The push plate drive is used to drive the push plate to move towards or away from the discharge port.

[0020] Further configuration: the aforementioned storage rack includes a first limiting plate and two second limiting plates. Both second limiting plates are slidably connected to the frame and slidably connected to both sides of the first limiting plate. The first limiting plate and the two second limiting plates enclose a storage space adapted to the LCD screen or glass cover. A discharge port is formed between the first limiting plate and the frame.

[0021] Among them, there are fixing structures between the second limiting plate and the frame, and between the second limiting plate and the first limiting plate. The fixing structures are used to fix the size and position of the storage space.

[0022] Furthermore, the aforementioned storage rack also includes a pressure rod. The second limiting plate is provided with a vertically or inclined downward sliding groove. The two ends of the pressure rod are slidably connected to the sliding grooves of the two second limiting plates respectively. The pressure rod is used to press down the LCD screen or glass cover in the storage space.

[0023] Furthermore, the outer side of the aforementioned pressure rod is provided with a soft contact pad, which is used to contact the LCD screen or glass cover in the storage space.

[0024] Furthermore, the aforementioned visual bonding machine also includes:

[0025] At least two first vision detection devices are provided above the first conveyor line. One of the first vision detection devices is located between the first feeding device and the dispensing device and is used to detect whether there is an un-adhesive LCD screen on the first conveyor line and the position of the un-adhesive LCD screen on the first conveyor line. The other first vision detection device is located upstream of the bonding device and is used to detect whether there is an adhesive-coated LCD screen on the first conveyor line and the position of the adhesive-coated LCD screen on the first conveyor line.

[0026] At least one second vision detection element is disposed above the second conveyor line, wherein the second vision detection element is located between the second feeding device and the bonding device, and is used to detect whether there is a glass cover plate on the second conveyor line, and the position of the glass cover plate on the second conveyor line.

[0027] Further, the aforementioned bonding device includes:

[0028] Adsorption clamps are used to adsorb or release glass covers.

[0029] The transfer mechanism is mounted on the frame and is connected to the adsorption clamp via a transmission. The transfer mechanism is used to drive the adsorption clamp to reciprocate between the first conveyor line and the second conveyor line to align and press the glass cover plate on the second conveyor line onto the glued LCD screen on the first conveyor line.

[0030] Further, the aforementioned adsorption fixture includes a mounting base and at least two negative pressure nozzles. The mounting base is located on the output end of the transfer mechanism and has an air passage for communicating with an external vacuum adsorption device. Each negative pressure nozzle is evenly spaced at the bottom of the mounting base and communicates with the air passage. The air passage is used to transmit gas to each negative pressure nozzle to adsorb or loosen the glass cover.

[0031] Furthermore, the aforementioned adsorption clamp also includes an elastic element. The mounting base is slidably disposed vertically on the output end of the transfer mechanism, and the elastic element is disposed between the output end of the transfer mechanism and the mounting base. The elastic element has a spring force that drives the output end of the transfer mechanism and the mounting base away from each other.

[0032] (III) Beneficial Effects

[0033] Compared with the prior art, the visual bonding machine provided by this utility model has the following beneficial effects:

[0034] In use, the visual laminating machine provided by this utility model firstly feeds LCD screens one by one onto a first conveyor line, while a second feeding device simultaneously feeds glass cover plates one by one onto a second conveyor line. Then, the first conveyor line feeds the LCD screens to a dispensing device, where the dispensing device applies adhesive. After adhesive application, the first conveyor line feeds the glued LCD screens to a laminating device, while the second conveyor line feeds the glass cover plates to the laminating device. The laminating device picks up the glass cover plate and aligns and presses it onto the glued LCD screen. Finally, the first conveyor line sends the laminated glass cover plate and LCD screen out of the visual laminating machine together. It can be seen that the entire process of feeding, applying adhesive, laminating, and unloading the LCD screens and glass cover plates is automatically completed by the equipment without manual intervention, thus effectively improving production efficiency and ensuring product quality. Attached Figure Description

[0035] Figure 1 This is a perspective view of the visual bonding machine in the embodiment;

[0036] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0037] Figure 3 This is a schematic diagram of the structure of the second feeding device in the embodiment;

[0038] Figure 4 This is a top view of the visual bonding machine in the embodiment;

[0039] Figure 5 This is a schematic diagram of the structure of the first conveyor line, the second conveyor line, and the bonding device in the embodiment.

[0040] Icon labels:

[0041] 1. Frame; 2. First feeding device; 3. First conveyor line; 4. Dispensing device;

[0042] 5. Second feeding device; 51. Storage rack; 511. Storage space; 512. Discharge port; 513. First limiting plate; 514. Second limiting plate; 5141. Slide groove; 515. Pressure rod; 5151. Contact pad; 52. Pushing mechanism; 521. Push plate; 522. Push plate drive component;

[0043] 6. Second conveyor line;

[0044] 7. Adhesion device; 71. Adsorption clamp; 711. Mounting base; 712. Negative pressure suction nozzle; 713. Elastic element; 72. Transfer mechanism;

[0045] 8. First visual inspection component; 9. Second visual inspection component;

[0046] 100. LCD screen; 200. Glass cover. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] This invention provides a visual bonding machine to address the problem of how to improve production efficiency.

[0049] See Figure 1 As shown, Figure 1 The first perspective view of the visual laminating machine in the embodiment is shown. The visual laminating machine includes a frame 1, a first feeding device 2, a first conveyor line 3, a dispensing device 4, a second feeding device 5, a second conveyor line 6, and a laminating device 7.

[0050] Both the first feeding device 2 and the first conveyor line 3 are mounted on the frame 1. The first feeding device 2 is located upstream of the first conveyor line 3, and is used to feed the LCD screens 100 one by one onto the first conveyor line 3. The first conveyor line 3 is used to transport the LCD screens 100.

[0051] The dispensing device 4 is mounted on the frame 1 and located above the first conveyor line 3. The dispensing device 4 is used to apply adhesive to the LCD screen 100 on the first conveyor line 3.

[0052] The second feeding device 5 and the second conveyor line 6 are both mounted on the frame 1. The second feeding device 5 is located upstream of the second conveyor line 6, and is used to feed the glass cover plates 200 one by one onto the second conveyor line 6. The second conveyor line 6 is used to transport the glass cover plates 200.

[0053] The bonding device 7 is mounted on the frame 1 and located downstream of the dispensing device 4. The bonding device 7 is used to grip the glass cover plate 200 on the second conveyor line 6 and align and press it onto the glued LCD screen 100 on the first conveyor line 3.

[0054] When using the visual laminating machine described above, firstly, the first feeding device 2 transports the LCD screens 100 one by one to the first conveyor line 3, while the second feeding device 5 transports the glass cover plates 200 one by one to the second conveyor line 6. Then, the first conveyor line 3 transports the LCD screens 100 to the area below the dispensing device 4, where the dispensing device 4 applies adhesive to the LCD screens 100. After applying the adhesive, the first conveyor line 3 transports the adhesive-coated LCD screens 100 to the area below the laminating device 7, while the second conveyor line 6 transports the glass cover plates 200 to the area below the laminating device 7. The laminating device 7 picks up the glass cover plates 200 and aligns and presses them onto the adhesive-coated LCD screens 100. Finally, the first conveyor line 3 sends the laminated glass cover plates 200 and LCD screens 100 out of the visual laminating machine together. As can be seen, the entire process of loading, gluing, bonding and unloading of the LCD screen 100 and glass cover plate 200 by the visual laminating machine is completed automatically by the equipment without human intervention, thereby effectively improving production efficiency and ensuring product quality.

[0055] The first conveyor line 3 and the second conveyor line 6 mentioned above can use any one of the existing motor-conveyor belt mechanism, motor-conveyor chain mechanism, motor-roller conveyor line or transplanting mechanism, or a combination of one or more of the conveyor mechanisms.

[0056] The dispensing device 4 can use existing dispensing equipment, and existing three-axis moving mechanism or robotic arm and other automated equipment can be installed between the dispensing device 4 and the frame 1, which can drive the dispensing device 4 to move relative to the first conveyor line 3 so that the dispensing device 4 can apply glue to any position of the LCD screen 100 on the first conveyor line 3.

[0057] See Figure 1 , Figure 2 and Figure 3 As shown, Figure 2 for Figure 1 Enlarged diagram of point A in the middle. Figure 3This is a schematic diagram of the structure of the second feeding device in the embodiment. In one embodiment of the first feeding device 2 and the second feeding device 5, both the first feeding device 2 and the second feeding device 5 include a storage rack 51 and a pushing mechanism 52. The storage rack 51 is mounted on the frame 1 and has a storage space 511 for stacking and accommodating LCD screens 100 or glass cover plates 200. The storage rack 51 has a discharge port 512 on the side facing the first conveyor line 3 or the second conveyor line 6. The discharge port 512 communicates with the storage space 511 and is positioned opposite to the bottommost LCD screen 100 or glass cover plate 200 in the storage space 511. The pushing mechanism 52 is mounted on the frame 1 and is used to push the bottommost LCD screen 100 or glass cover plate 200 in the storage space 511 from the discharge port 512 onto the first conveyor line 3 or the second conveyor line 6. Thus, the first feeding device 2 and the second feeding device 5 can push the bottom layer LCD screen 100 or glass cover plate 200 in the storage space 511 from the discharge port 512 to the first conveyor line 3 or the second conveyor line 6 through the pushing mechanism 52. After the bottom layer LCD screen 100 or glass cover plate 200 in the storage space 511 is removed, it can automatically move down one layer under its own gravity so that the pushing mechanism 52 can push it again. By repeating this process, the LCD screen 100 or glass cover plate 200 can be automatically and continuously transported to the corresponding conveyor line one by one, which greatly improves the production efficiency.

[0058] like Figure 3 As shown, the mounting surfaces of the first feeding device 2 and the second feeding device 5 can be inclined toward the first conveyor line 3 or the second conveyor line 6 to assist the pushing mechanism 52 in pushing the bottom layer LCD screen 100 or glass cover plate 200 in the storage space 511 from the discharge port 512 onto the corresponding conveyor line 3.

[0059] See Figure 1 , Figure 2 and Figure 3As shown, in one embodiment of the pushing mechanism 52, the pushing mechanism 52 includes a push plate 521 and a push plate drive member 522. The push plate 521 is positioned opposite to the discharge port 512, and the thickness of the push plate 521 is not greater than the thickness of the LCD screen 100 or the glass cover plate 200, so that the push plate 521 pushes only one LCD screen 100 or glass cover plate 200 at a time. The push plate drive member 522 is mounted on the frame 1 by means of screwing or welding, and is connected to the push plate 521 for transmission. The push plate drive member 522 is used to drive the push plate 521 to move towards or away from the discharge port 512. Thus, the original position of the pusher plate 521 is outside the storage space 511. When it is necessary to feed the LCD screen 100 or the glass cover plate 200, the pusher plate drive component 522 drives the pusher plate 521 to move towards the discharge port 512, so as to move the pusher plate 521 into the storage space 511. At the same time as the pusher plate 521 moves into the storage space 511, it pushes the bottom layer of LCD screen 100 or glass cover plate 200 in the storage space 511 to move out from the discharge port 512 to the corresponding conveyor line, thereby achieving the effect of automatic feeding. After the bottom layer of LCD screen 100 or glass cover plate 200 moves out from the discharge port 512, the pusher plate drive component 522 drives the pusher plate 521 to move away from the discharge port 512 out of the storage space 511 and return to its original position, so that the stack of LCD screens 100 or glass cover plates 200 in the storage space 511 moves down one layer as a whole.

[0060] The aforementioned push plate drive component 522 can use existing linear displacement drive mechanisms such as telescopic cylinders or telescopic poles, and its output end is connected to the push plate 521 by means of screwing or welding.

[0061] See Figure 1 , Figure 2 and Figure 3As shown, in one embodiment of the storage rack 51, the storage rack 51 includes a first limiting plate 513 and two second limiting plates 514. Both second limiting plates 514 are slidably connected to the frame 1, and are slidably connected to both sides of the first limiting plate 513. The first limiting plate 513 and the two second limiting plates 514 enclose a storage space 511 adapted to the LCD screen 100 or the glass cover 200. A discharge port 512 is formed between the first limiting plate 513 and the frame 1. A fixing structure (not shown in the figure) is provided between the second limiting plates 514 and the frame 1, and between the second limiting plates 514 and the first limiting plate 513. The fixing structure is used to fix the size and position of the storage space 511. Thus, by sliding the first limiting plate 513 and the two second limiting plates 514, the storage rack 51 can not only adjust the size of the storage space 511 to match the actual LCD screen 100 or glass cover plate 200 to be bonded, thereby limiting the stacked LCD screen 100 or glass cover plate 200, but also finely adjust the position of the storage space 511, thereby adjusting the position of the LCD screen 100 or glass cover plate 200 on the corresponding conveyor line to improve the accuracy of subsequent adhesive bonding.

[0062] The second limiting plate 514 can be slidably connected to the frame 1 via a combination of a long slot and a screw or slide bar, or it can be slidably connected to the first limiting plate 513 via a similar structure. The aforementioned fixing structure can use a damping structure or a bolt and nut structure to fix the size and position of the adjusted storage space 511.

[0063] See Figure 1 and Figure 3 As shown, based on the above embodiment, the storage rack 51 further includes a pressure rod 515. A sliding groove 5141 is formed on the second limiting plate 514, extending vertically downwards or inclined downwards. Both ends of the pressure rod 515 are slidably connected to the sliding grooves 5141 of the two second limiting plates 514, respectively. The pressure rod 515 is used to press down the LCD screen 100 or glass cover 200 within the storage space 511. Thus, under its own weight, the pressure rod 515 can slide downward along the slide groove 5141, thereby pressing down the LCD screen 100 or glass cover plate 200 in the storage space 511, further confining the stacked LCD screen 100 or glass cover plate 200 within the storage space 511. This effectively prevents the LCD screen 100 or glass cover plate 200 in the storage space 511 from scattering and falling out of the storage space 511 during the pushing process of the pushing mechanism 52. When the pushing mechanism 52 pushes the material, since the pressure rod 515 is slidable, the pushing mechanism 52 can overcome the pressure of the pressure rod 515 and push the bottom LCD screen 100 or glass cover plate 200 out of the storage space 511.

[0064] See Figure 1and Figure 3 As shown, based on the above embodiment, a soft contact pad 5151 is provided on the outer side of the pressure rod 515 by means of bonding or sleeve connection. The contact pad 5151 is used to contact the liquid crystal screen 100 or the glass cover plate 200 in the storage space 511. In this way, the contact pad 5151 can not only effectively prevent scratches on the surface of the liquid crystal screen 100 or the glass cover plate 200 caused by rigid friction between the pressure rod 515 and the liquid crystal screen 100 or the glass cover plate 200 in the storage space 511, but also increase the friction between the pressure rod 515 and the liquid crystal screen 100 or the glass cover plate 200 in the storage space 511, thereby improving the limiting effect of the pressure rod 515.

[0065] See Figure 1 and Figure 4 As shown, Figure 4 The diagram shows a top view of the visual bonding machine in one embodiment. Based on any of the above embodiments, the visual bonding machine further includes at least two first visual inspection elements 8 and at least one second visual inspection element 9. The first visual inspection elements 8 are mounted above the first conveyor line 3. One of the first visual inspection elements 8 is located between the first feeding device 2 and the dispensing device 4, and is used to detect whether there is an un-adhesive-coated LCD screen 100 on the first conveyor line 3, and the position of the un-adhesive-coated LCD screen 100 on the first conveyor line 3. Another first visual inspection element 8 is located upstream of the bonding device 7, and is used to detect whether there is an adhesive-coated LCD screen 100 on the first conveyor line 3, and the position of the adhesive-coated LCD screen 100 on the first conveyor line 3. The second visual inspection element 9 is mounted above the second conveyor line 6. One of the second visual inspection elements 9 is located between the second feeding device 5 and the bonding device 7, and is used to detect whether there is a glass cover plate 200 on the second conveyor line 6, and the position of the glass cover plate 200 on the second conveyor line 6. Thus, by using the first visual inspection component 8 to detect and position the LCD screen 100 on the first conveyor line 3, it is beneficial to improve the adhesive coating quality of the LCD screen 100. Combined with the second visual inspection component 9 to detect and position the glass cover plate 200 on the second conveyor line 6, it is beneficial to improve the bonding quality of the LCD screen 100 and the glass cover plate 200.

[0066] See Figure 1 , Figure 4 and Figure 5 As shown, Figure 5This is a schematic diagram of the structure of the first conveyor line, the second conveyor line, and the bonding device in one embodiment. In one implementation of the bonding device 7, the bonding device 7 includes an adsorption clamp 71 and a transfer mechanism 72. The adsorption clamp 71 is used to adsorb or release the glass cover plate 200. The transfer mechanism 72 is mounted on the frame 1 and is drivenly connected to the adsorption clamp 71. The transfer mechanism 72 is used to drive the adsorption clamp 71 to reciprocate between the first conveyor line 3 and the second conveyor line 6, so as to align and press the glass cover plate 200 on the second conveyor line 6 onto the glued LCD screen 100 on the first conveyor line 3. Thus, the bonding device 7, through the cooperation of the transfer mechanism 72 and the adsorption clamp 71, can automatically grab a glass cover plate 200 on the second conveyor line 6, and can also transfer the glass cover plate 200 to the top of the first conveyor line 3, so that the glass cover plate 200 is positioned opposite a pre-coated LCD screen 100 on the first conveyor line 3. Then, the glass cover plate 200 is pressed onto the pre-coated LCD screen 100, thereby achieving the function of automatically aligning and bonding the glass cover plate 200 and the LCD screen 100, which greatly improves production efficiency.

[0067] The aforementioned transfer mechanism 72 can use existing three-axis moving mechanisms or automated equipment such as robotic arms to drive the adsorption gripper 71 to move relative to the first conveyor line 3 or the second conveyor line 6, so that the adsorption gripper 71 can grasp any glass cover plate 200 on the second conveyor line 6 and align and attach it to any glue-coated LCD screen 100 on the first conveyor line 3. If the aforementioned transfer mechanism 72 uses an existing three-axis moving mechanism, a rotary motor or rotary cylinder can be added to the three-axis moving mechanism to further precisely adjust the relative position of the glass cover plate 200 and the LCD screen 100, so that the glass cover plate 200 and the LCD screen 100 are positioned relative to each other.

[0068] See Figure 5 As shown, in one embodiment of the adsorption clamp 71, the adsorption clamp 71 includes a mounting base 711 and at least two negative pressure suction nozzles 712. The mounting base 711 is mounted on the output end of the transfer mechanism 72 and has an air passage (not shown) for communication with an external vacuum adsorption device. The negative pressure suction nozzles 712 are evenly spaced at the bottom of the mounting base 711 and communicate with the air passage. The air passage is used to transmit gas to each negative pressure suction nozzle 712 to adsorb or release the glass cover plate 200. Thus, the adsorption clamp 71 vacuum adsorbs the glass cover plate 200 through at least two evenly spaced negative pressure suction nozzles 712, avoiding stress concentration and ensuring that the glass cover plate 200 is not damaged or broken due to adsorption pressure during the transfer and bonding process.

[0069] See Figure 5As shown, based on the above embodiment, the adsorption clamp 71 further includes an elastic element 713. The mounting base 711 is slidably connected vertically to the output end of the transfer mechanism 72. The elastic element 713 is located between the output end of the transfer mechanism 72 and the mounting base 711. The elastic element 713 has a spring force that drives the output end of the transfer mechanism 72 and the mounting base 711 away from each other. Thus, the elastic element 713 can effectively prevent product damage caused by overpressure from the bonding device 7.

[0070] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A visual bonding machine, characterized in that, include: frame; A first feeding device and a first conveyor line are mounted on the frame. The first feeding device is located upstream of the first conveyor line and is used to feed the LCD screens one by one onto the first conveyor line. The first conveyor line is used to feed the LCD screens. A dispensing device is mounted on the frame and located above the first conveyor line. The dispensing device is used to apply adhesive to the LCD screen on the first conveyor line. A second feeding device and a second conveyor line are provided on the frame. The second feeding device is located upstream of the second conveyor line and is used to feed the glass cover plates one by one onto the second conveyor line. The second conveyor line is used to feed the glass cover plates. A bonding device is mounted on the frame and located downstream of the dispensing device. The bonding device is used to grip the glass cover plate on the second conveyor line and press it onto the glued LCD screen on the first conveyor line.

2. The visual bonding machine according to claim 1, characterized in that, Both the first feeding device and the second feeding device include: A storage rack is provided on the frame and has a storage space for stacking and accommodating the LCD screen or glass cover plate. The storage rack has a discharge port on the side facing the first conveyor line or the second conveyor line. The discharge port is connected to the storage space and is opposite to the position of the lowest layer of the LCD screen or glass cover plate in the storage space. A pushing mechanism is provided on the frame and is used to push the lowest layer of the LCD screen or glass cover in the storage space from the discharge port to the first conveyor line or the second conveyor line.

3. The visual bonding machine according to claim 2, characterized in that, The pushing mechanism includes: A push plate, which is positioned opposite the discharge port, and the thickness of the push plate is not greater than the thickness of the LCD screen or glass cover. A pusher plate drive is mounted on the frame and is connected to the pusher plate via a transmission mechanism. The pusher plate drive is used to drive the pusher plate to move toward or away from the discharge port.

4. The visual bonding machine according to claim 2, characterized in that, The storage rack includes a first limiting plate and two second limiting plates. The two second limiting plates are slidably connected to the frame and slidably connected to both sides of the first limiting plate. The first limiting plate and the two second limiting plates enclose a storage space adapted to the LCD screen or glass cover. The discharge port is formed between the first limiting plate and the frame. The second limiting plate and the frame are both provided with fixing structures, and the second limiting plate and the first limiting plate are also provided with fixing structures to fix the size and position of the storage space.

5. The visual bonding machine according to claim 4, characterized in that, The storage rack also includes a pressure rod. The second limiting plate is provided with a vertically or inclined downward sliding groove. The two ends of the pressure rod are slidably connected to the sliding grooves of the two second limiting plates respectively. The pressure rod is used to press down the LCD screen or glass cover in the storage space.

6. The visual bonding machine according to claim 5, characterized in that, The outer side of the pressure rod is provided with a soft contact pad, which is used to contact the LCD screen or glass cover plate in the storage space.

7. The visual bonding machine according to any one of claims 1-6, characterized in that, The visual bonding machine also includes: At least two first visual inspection devices are disposed above the first conveyor line. One of the first visual inspection devices is located between the first feeding device and the dispensing device and is used to detect whether there is an un-adhesive LCD screen on the first conveyor line and the position of the un-adhesive LCD screen on the first conveyor line. The other first visual inspection device is located upstream of the bonding device and is used to detect whether there is an adhesive-coated LCD screen on the first conveyor line and the position of the adhesive-coated LCD screen on the first conveyor line. At least one second visual inspection element is disposed above the second conveyor line, wherein the second visual inspection element is located between the second feeding device and the bonding device, and is used to detect whether the glass cover plate is on the second conveyor line and the position of the glass cover plate on the second conveyor line.

8. The visual bonding machine according to any one of claims 1-6, characterized in that, The bonding device includes: An adsorption clamp is used to adsorb or release the glass cover plate; A transfer mechanism is mounted on the frame and is connected to the adsorption clamp via a transmission mechanism. The transfer mechanism is used to drive the adsorption clamp to reciprocate between the first conveyor line and the second conveyor line to align and press the glass cover plate on the second conveyor line onto the glued LCD screen on the first conveyor line.

9. The visual bonding machine according to claim 8, characterized in that, The adsorption fixture includes a mounting base and at least two negative pressure nozzles. The mounting base is located on the output end of the transfer mechanism. The mounting base is provided with a gas passage for communicating with an external vacuum adsorption device. Each of the negative pressure nozzles is evenly spaced at the bottom of the mounting base and communicates with the gas passage. The gas passage is used to transmit gas to each of the negative pressure nozzles to adsorb or release the glass cover.

10. The visual bonding machine according to claim 9, characterized in that, The adsorption clamp also includes an elastic element. The mounting base is slidably disposed vertically on the output end of the transfer mechanism. The elastic element is disposed between the output end of the transfer mechanism and the mounting base. The elastic element has a spring force that drives the output end of the transfer mechanism and the mounting base away from each other.

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