Four-station lamination feeding equipment for backlight assembly machine

Abstract

The application discloses a four-station lamination feeding equipment of a backlight assembling machine, and relates to the technical field of backlight assembling machines.The equipment comprises a base, a stacking area arranged on the base and used for storing laminations, and a material taking unit used for taking and placing laminations, and a feeding unit is further arranged on the base.The feeding unit comprises two correction blocks which are symmetrically arranged and are in L shapes, a conveying belt arranged on the side of the correction blocks and driven by two driving rollers, and two dust sticking belts located between the correction blocks and the conveying belt.The two dust sticking belts are arranged in an up-down mode and are driven by two driving rollers.The correction blocks can be used for realizing initial positioning correction of laminations, and the guiding effect of the micro-sticking force dust sticking belts can be used for ensuring that the laminations move along a preset path and effectively avoiding position deviation in the conveying process.

Description

Technical Field

[0001] This invention relates to the field of backlight assembly machine technology, specifically to a four-station stack of a backlight assembly machine. piece Feeding equipment. Background Technology

[0002] As a core precision optical component, the surface cleanliness of the backlight lamination of LCM LCD modules has a decisive impact on the assembly yield and display effect of the module. At present, the production and assembly of backlight laminations are mostly carried out in cleanrooms. However, the mechanical friction of equipment operation, the contact disturbance of automated material handling, and the intervention of manual material replenishment operations in the workshop will still generate a small amount of local dust. There is a risk of dust sticking to the laminations during handling, loading, and transfer.

[0003] Currently, cleaning mechanisms are typically installed on the side of the transfer station at the front of the assembly station. The stacked components are cleaned during the conveying process, and the cleaning method generally uses brushes. This method can only brush off the dust on the upper surface of the stacked components, and it is difficult to clean the dust on the side of the stacked components that is in contact with the conveyor belt. Moreover, the dust after brushing does not leave the internal working space of the equipment and will still float in the environment around the stacked components, posing a risk of secondary dust adhesion, and the cleaning effect is limited. In order to complement the brush cleaning, some equipment is equipped with a negative pressure adsorption system to collect the brushed dust. However, when the negative pressure adsorption port is working, it generates directional airflow. As thin optical components, the stacked components are very easy to shift their position under the action of airflow. This not only affects the subsequent feeding positioning and assembly accuracy, but may also cause new defects such as edge breakage and surface scratches of the stacked components. At the same time, the amount of dust on the surface of the stacked components is usually very small. Equipping a whole negative pressure adsorption system to collect a small amount of dust will significantly increase the overall manufacturing cost and subsequent maintenance cost of the equipment, resulting in resource waste. In addition, the energy consumption of the negative pressure system will also increase the operating cost of the production line, which does not meet the requirements of efficient and energy-saving production. Summary of the Invention

[0004] The purpose of this invention is to provide a four-station stacking and feeding device for a backlight assembly machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a four-station stacking and feeding device for a backlight assembly machine, comprising a base and a stacking area disposed on the base for storing stacked wafers and a feeding unit for picking up and placing stacked wafers, wherein a feeding unit is also disposed on the base; the feeding unit includes: Two calibration blocks are arranged symmetrically and are configured in an L-shape; A conveyor belt is positioned on the side of the correction block and driven by two drive rollers; the conveyor belt is used to transport stacked sheets to the next workstation. Two dust-adhesive belts are located between the alignment block and the conveyor belt; the two dust-adhesive belts are distributed vertically and are both driven by two drive rollers. The working surfaces of the correction block, the dust-adhesive belt below, and the conveyor belt are all on the same horizontal plane; The frame is used to install drive roller one and drive roller two. Drive unit one is used to drive the two correction blocks to move towards each other to correct the position of the correction stack; Drive unit two is used to drive the dust-adhesive belt and the conveyor belt to move at the same speed; The pushing mechanism is used to push the calibrated stacked pieces on the calibration block toward the side closer to the dust belt.

[0006] As a further embodiment of the present invention, a slide plate is slidably mounted on the frame in the vertical direction, and a spring is fixedly connected to the slide plate, with the end of the spring away from the slide plate being fixed to the frame.

[0007] As a further embodiment of the present invention, the second drive unit includes a gear and a motor; the gear is fixedly mounted on the rotating shaft of the upper drive roller; the gear meshes with a gear; the gear is rotatably connected to the slide plate; pulleys are fixedly connected to both the gear and the rotating shaft of the lower drive roller, and a tension wheel is mounted on the frame; the two pulleys and the tension wheel are connected by a belt; pulleys are fixedly connected to the rotating shafts of both the lower drive roller and the drive roller; the two pulleys are connected by a belt; the output shaft of the motor is fixed to the rotating shaft of one of the drive rollers.

[0008] As a further embodiment of the present invention, the first motor is connected to the rotating shaft of the second drive roller on the front side of the conveyor belt in the conveying direction.

[0009] As a further embodiment of the present invention, the drive unit one includes a bidirectional threaded rod and a slide rod; both the bidirectional threaded rod and the slide rod are mounted on a base; two correction blocks are respectively threaded onto both ends of the bidirectional threaded rod; the correction blocks are slidably connected to the slide rod; and the bidirectional threaded rod is driven by a motor two.

[0010] As a further embodiment of the present invention, the pushing mechanism includes a pusher plate and a linear drive unit; the pusher plate is located between the two correction blocks; the linear drive unit is used to drive the pusher plate to push the stacked sheets to move towards the side closer to the dust belt.

[0011] As a further embodiment of the present invention, the linear drive unit includes a cylinder; the cylinder is mounted on a base and its output end is fixedly connected to a push plate.

[0012] As a further embodiment of the present invention, a probe rod is rotatably connected to one of the calibration blocks, the length of the probe rod being the same as the length of the stacked plates.

[0013] As a further embodiment of the present invention, rollers are rotatably mounted on the correction block.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves initial positioning correction of the stacked sheets through the setting of correction blocks. At the same time, with the guiding effect of the micro-adhesive dust-adhesive belt, it ensures that the stacked sheets move along the preset path. Meanwhile, the drive unit two drives the dust-adhesive belt and the conveyor belt to move synchronously, in the same direction, and at the same speed, so that the stacked sheets are in a relatively stationary state when transferring between the two, effectively avoiding positional deviation during the conveying process. The use of vertically distributed dust-adhesive belts to transport the stacked sheets can simultaneously adsorb dust on the upper and lower surfaces of the stacked sheets, leaving the dust on the surface of the dust-adhesive belt, achieving full surface dust-free treatment. Moreover, it does not require negative pressure adsorption, avoiding dust floating in the working space, eliminating the risk of secondary dust adhesion from the root, and ensuring the cleanliness of the stacked sheet surface. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the feeding unit structure of the present invention; Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 This is a schematic diagram of the installation state of the adhesive tape of the present invention; Figure 5 This is a cross-sectional schematic diagram of the feeding unit structure of the present invention; Figure 6 This is a cross-sectional schematic diagram of the correction block and roller structure of the present invention; Figure 7 This is a schematic diagram illustrating the working principle of the present invention.

[0016] The attached figures are labeled as follows: 1-Base, 2-Stacking area, 3-Material handling unit, 4-Feeding unit, 5-Drive shaft one, 6-Drive shaft two, 7-Material handling robot, 8-Correction block, 9-Frame, 10-Dust-adhesive belt, 11-Drive roller one, 12-Conveyor belt, 13-Drive roller two, 14-Slide plate, 15-Spring one, 16-Push plate, 17-Cylinder, 18-Double threaded rod, 19-Slide rod, 20-Gear one, 21-Gear two, 22-Pulley one, 23-Tension wheel, 24-Pulley two, 25-Detector rod, 26-Roller, 27-Motor one. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-7 In the attached diagram, X represents a stacked wafer; this invention provides a technical solution: a four-station stacking and feeding device for a backlight assembly machine, including a base 1, a stacking area 2 for storing stacked wafers, and a feeding unit 3 for picking up and placing stacked wafers, all disposed on the base 1. A feeding unit 4 is also arranged on the base 1; the feeding unit 4 includes two alignment blocks 8, a frame 9, two dust-adhesive belts 10, a conveyor belt 12, a drive unit one, a drive unit two, and a pushing mechanism; the two alignment blocks 8 are symmetrically arranged and configured in an L-shape; the conveyor belt 12 is disposed on the side of the alignment blocks 8 and is driven by two drive rollers 13; the conveyor belt 12 is used for... The stacked sheets are conveyed to the next workstation; two dust-adhesive belts 10 are located between the correction block 8 and the conveyor belt 12; the two dust-adhesive belts 10 are distributed vertically and are both driven by two drive rollers 11; the working surfaces of the correction block 8, the lower dust-adhesive belt 10, and the conveyor belt 12 are on the same horizontal plane; the frame 9 is used to install drive rollers 11 and 2 drive rollers 13; drive unit 1 is used to drive the two correction blocks 8 to move towards each other to correct the position of the stacked sheets; drive unit 2 is used to drive the dust-adhesive belt 10 and the conveyor belt 12 to move at the same speed; the pushing mechanism is used to push the corrected stacked sheets on the correction block 8 towards the side closer to the dust-adhesive belt 10.

[0019] refer to Figure 1Workers can directly place stacked sheets in stacking area 2, as long as the total height of the stacked sheets is within 230mm, without the need for material trays. Subsequently, the picking unit 3 sequentially transports the stacked sheets from stacking area 2 to the calibration block 8 of the feeding unit 4. The actuator of the picking unit 3 is the picking robot 7. This robot is controlled by drive shaft 5 and drive shaft 6 to move in the X and Y axes, and can also move independently along the Z axis to complete the picking and unloading actions. After the stacked sheets are placed on the calibration block 8, drive unit 1 drives the two calibration blocks 8 to move towards each other. Through the cooperation of the two calibration blocks 8, the stacked sheets can be moved to the middle position of the conveyor line to complete the initial positioning calibration. Then, the pushing mechanism moves the calibrated stacked sheets closer to the dust-adhesive belt 10 until one end of the stacked sheets enters the clamping area between the two dust-adhesive belts 10, and then the pushing mechanism returns to the initial position. Under the action of drive unit 2, the two dust-adhesive belts 10 synchronously drive the stacked sheets. The sheet moves towards the side closer to the conveyor belt 12; the dust-adhesive belt 10 uses a modified silicone adhesive tape, whose adhesive layer is of low migration and residue-free type, with a stable molecular structure, which can prevent the transfer of adhesive components to the surface of the stacked sheet, and leaves no adhesive or oil residue after peeling; during the process of conveying the stacked sheet with the two dust-adhesive belts 10, they can respectively adsorb the dust on the upper and lower surfaces of the stacked sheet, so that the dust stays on the surface of the dust-adhesive belt 10, avoiding the risk of secondary dust adhesion caused by dust floating; the dust-adhesive belt 10 adopts a micro-adhesive design, which will not cause the thin stacked sheet to shift or damage its optical coating due to excessive adhesion, and can generate sufficient adhesive guiding force for the stacked sheet, so that the stacked sheet always conforms to the moving direction of the dust-adhesive belt and moves stably along the preset path to the conveyor belt 12; the drive unit 2 can keep the conveyor belt 12 and the dust-adhesive belt 10 moving synchronously, in the same direction, and at the same speed, ensuring that the stacked sheet is in a relatively stationary state when it is transferred from the dust-adhesive belt 10 to the conveyor belt 12, and avoiding deviation during the conveying process.

[0020] In this embodiment, the feeding unit 4 can be set to four, which can achieve feeding without stopping the machine and provide sufficient time for the dust-adhesive belt 10 to drive the stacked sheets. The dust-adhesive belt 10 can slowly and stably drive the stacked sheets to move, which greatly reduces the probability of stacked sheets deviating due to excessive movement speed, and further ensures that the stacked sheets move along the preset path.

[0021] This invention, through the setting of the correction block 8, can achieve initial positioning correction of the stacked sheets. At the same time, with the guiding effect of the micro-adhesive dust-adhesive belt 10, it ensures that the stacked sheets move along the preset path. Meanwhile, the drive unit 2 drives the dust-adhesive belt and the conveyor belt to move synchronously, in the same direction, and at the same speed, so that the stacked sheets are in a relatively stationary state when transferring between the two, effectively avoiding positional deviation during the conveying process. The use of vertically distributed dust-adhesive belts to transport the stacked sheets can simultaneously adsorb dust on the upper and lower surfaces of the stacked sheets, leaving the dust on the surface of the dust-adhesive belt, achieving full surface dust-free treatment. Moreover, it does not require negative pressure adsorption, avoiding dust floating in the working space, eliminating the risk of secondary dust adhesion from the root, and ensuring the cleanliness of the stacked sheet surface.

[0022] Specifically, such as Figures 2-4 As shown, a slide plate 14 is slidably mounted on the frame 9 in the vertical direction. A spring 15 is fixedly connected to the slide plate 14, and the end of the spring 15 away from the slide plate 14 is fixed to the frame 9. The frame 9 provides a vertical sliding guide base for the slide plate 14. The slide plate 14 can slide back and forth along the vertical direction of the frame 9 to adjust the height of the upper dust-adhesive tape and adapt to the clamping requirements of stacked sheets of different thicknesses. Through the elastic restoring force of the spring 15, a continuous elastic pressure is formed on the slide plate 14, so that the upper dust-adhesive tape 10 always adheres to the upper surface of the stacked sheets and forms a tight clamping state with the lower dust-adhesive tape 10.

[0023] Specifically, such as Figure 3 As shown, the second drive unit includes a gear 20 and a motor 27; the gear 20 is fixedly mounted on the rotating shaft of the upper drive roller 11; the gear 20 meshes with a gear 21; the gear 21 is rotatably connected to the slide plate 14; pulleys 22 are fixedly connected to both the gear 21 and the rotating shaft of the lower drive roller 11; a tension wheel 23 is mounted on the frame 9; the two pulleys 22 and the tension wheel 23 are connected by a belt; pulleys 24 are fixedly connected to the rotating shafts of the lower drive roller 11 and the drive roller 13; the two pulleys 24 are connected by a belt; the output shaft of the motor 27 is fixed to the rotating shaft of one of the drive rollers 13.

[0024] refer to Figure 3 Drive roller 11 and drive roller 23 have the same diameter; the output shaft of motor 127 directly drives one of the drive rollers 23 to rotate, providing initial power for the entire system; the rotation shaft of drive roller 23 transmits power synchronously to the rotation shaft of drive roller 11 below through pulley 24 and belt 2, so that drive roller 11 below and drive roller 23 rotate at the same speed and in the same direction, thereby achieving basic synchronous movement between the lower dust belt 10 and the conveyor belt 12; the rotation shaft of drive roller 11 below is connected to the pulley 24. 1. The cooperation between belt 1 and tension wheel 23 transmits power to the rotating shaft of gear 21. The tension wheel 23 can adjust the tension of belt 1 in real time to prevent belt slippage and ensure the stability of power transmission. Gear 21 meshes with gear 20 fixed on the rotating shaft of upper drive roller 11, so that upper drive roller 11 and lower drive roller 11 rotate at the same speed and in opposite directions, thereby making the upper and lower dust belts 10 form a clamping and conveying state in the same direction and at the same speed, providing a stable clamping driving force and guiding force for the stacked sheets.

[0025] Specifically, such as Figure 2 and Figure 4As shown, the motor 27 is connected to the rotating shaft of the drive roller 13 on the front side of the conveyor belt 12 in the conveying direction; this can make the tension and force of the conveyor belt 12 more uniform, avoid problems such as excessive local tension and deviation of the conveyor belt caused by the rear-mounted power, and further improve the stability and positioning accuracy of the stacked conveyor.

[0026] Specifically, such as Figure 2 As shown, the drive unit 1 includes a bidirectional threaded rod 18 and a slide rod 19; both the bidirectional threaded rod 18 and the slide rod 19 are mounted on the base 1; the two correction blocks 8 are respectively threaded onto both ends of the bidirectional threaded rod 18; the correction blocks 8 are slidably connected to the slide rod 19; the bidirectional threaded rod 18 is driven by a motor 2; the motor 2 (not shown in the figure) can drive the bidirectional threaded rod 18 to rotate, thereby driving the two correction blocks 8 to move synchronously and correct the position of the stacked pieces.

[0027] Specifically, such as Figure 2 As shown, the pushing mechanism includes a pusher plate 16 and a linear drive unit; the pusher plate 16 is located between the two correction blocks 8; the linear drive unit is used to drive the pusher plate 16 to push the stacked pieces to move closer to the dust belt 10; the linear drive unit includes a cylinder 17; the cylinder 17 is mounted on the base 1 and its output end is fixedly connected to the pusher plate 16; the cylinder 17 can drive the pusher plate 16 to move in the stacked piece conveying direction, thereby pushing the stacked pieces on the correction block 8 to move.

[0028] Specifically, such as Figure 2 and Figure 5 As shown, a probe rod 25 is rotatably connected to one of the correction blocks 8. The length of the probe rod 25 is the same as the length of the stacked sheets. When the two correction blocks 8 move towards each other, the probe rod 25 rotates to a horizontal state and limits the correction block 8. When the distance between the two correction blocks 8 is consistent with the length of the stacked sheets, the correction block 8 stops moving, which can prevent the correction block 8 from moving too far and causing damage to the stacked sheets.

[0029] Specifically, such as Figure 6 As shown, a roller 26 is rotatably mounted on the correction block 8; the setting of the roller 26 makes it easier for the pushing mechanism to push the corrected stacked pieces to move.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A four-station stacking and feeding device for a backlight assembly machine, comprising a base (1), a stacking area (2) disposed on the base (1) for storing stacked wafers, and a feeding unit (3) for picking up and placing stacked wafers, characterized in that: A feeding unit (4) is also arranged on the base (1); the feeding unit (4) includes: Two correction blocks (8) are arranged symmetrically and are set in an L-shape; A conveyor belt (12) is located on the side of the correction block (8) and is driven by two drive rollers (13); the conveyor belt (12) is used to transport stacked sheets to the next station; Two dust-adhesive belts (10) are located between the correction block (8) and the conveyor belt (12); the two dust-adhesive belts (10) are distributed vertically and are both driven by two drive rollers (11); The working surfaces of the correction block (8), the dust-adhesive belt (10) below, and the conveyor belt (12) are on the same horizontal plane; The frame (9) is used to install drive roller one (11) and drive roller two (13). Drive unit one is used to drive two correction blocks (8) to move towards each other to correct the position of the stacked plates; Drive unit two is used to drive the dust-adhesive belt (10) and the conveyor belt (12) to move at the same speed; The pushing mechanism is used to push the corrected stacked pieces on the correction block (8) toward the side closer to the dust belt (10).

2. The four-station stacking and feeding equipment for a backlight assembly machine according to claim 1, characterized in that: The frame (9) has a sliding plate (14) mounted vertically. A spring (15) is fixedly connected to the sliding plate (14). The end of the spring (15) away from the sliding plate (14) is fixed to the frame (9).

3. The four-station stacking and feeding equipment for a backlight assembly machine according to claim 2, characterized in that: The second drive unit includes a gear (20) and a motor (27); the gear (20) is fixedly mounted on the rotating shaft of the upper drive roller (11); the gear (20) meshes with a gear (21); the gear (21) is rotatably connected to the slide plate (14); the gear (21) and the rotating shaft of the lower drive roller (11) are both fixedly connected to pulleys (22); a tension wheel (23) is mounted on the frame (9); the two pulleys (22) and the tension wheel (23) are connected by a belt; the rotating shafts of the lower drive roller (11) and the drive roller (13) are both fixedly connected to pulleys (24); the two pulleys (24) are connected by a belt; the output shaft of the motor (27) is fixed to the rotating shaft of one of the drive rollers (13).

4. The four-station stacking and feeding equipment for a backlight assembly machine according to claim 3, characterized in that: The motor (27) is connected to the rotating shaft of the drive roller (13) on the front side of the conveyor belt (12) in the conveying direction.

5. The four-station stacking and feeding equipment for a backlight assembly machine according to claim 1, characterized in that: The drive unit includes a bidirectional threaded rod (18) and a slide rod (19); both the bidirectional threaded rod (18) and the slide rod (19) are mounted on the base (1); two correction blocks (8) are threadedly mounted on both ends of the bidirectional threaded rod (18); the correction blocks (8) are slidably connected to the slide rod (19); the bidirectional threaded rod (18) is driven by a motor.

6. The four-station stacking and feeding equipment for a backlight assembly machine according to claim 1, characterized in that: The pushing mechanism includes a pusher plate (16) and a linear drive unit; the pusher plate (16) is located between the two correction blocks (8); the linear drive unit is used to drive the pusher plate (16) to push the stacked sheets to move closer to the dust belt (10).

7. The four-station stacking and feeding equipment for a backlight assembly machine according to claim 6, characterized in that: The linear drive unit includes a cylinder (17); the cylinder (17) is mounted on the base (1) and its output end is fixedly connected to the push plate (16).

8. The four-station stacking and feeding equipment for a backlight assembly machine according to claim 1, characterized in that: One of the calibration blocks (8) is rotatably connected to a probe rod (25), the length of which is the same as the length of the stacked pieces.

9. The four-station stacking and feeding equipment for a backlight assembly machine according to claim 1, characterized in that: Rollers (26) are rotatably mounted on the correction block (8).

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