A cleaning machine board positioning device

Abstract

The utility model relates to glass substrate processing and manufacturing technical field discloses a kind of cleaning machine board positioning device, including positioning wheel, signal inductor, support seat, servo motor, displacement sensor, central controller, conveying belt and telescopic device;The signal inductor is placed in the middle gap of multiple parallelly arranged conveying belt, for detecting glass signal;The positioning wheel is arranged on support seat, support seat is connected on telescopic device, telescopic device lower portion is equipped with displacement sensor, and telescopic device is connected with servo motor;The signal inductor, displacement sensor and servo motor are connected with central controller. The utility model confirms the state of glass on conveying device by signal inductor, also monitors positioning state by displacement sensor, prevents glass extrusion caused by single movement too much from leading to broken board. The design is reasonable, and structure is stable, can carry out real-time full-automatic positioning to glass position, guarantees the quality of glass substrate.

Description

Technical Field

[0001] This utility model relates to the field of glass substrate processing and manufacturing technology, and in particular to a plate placement and positioning device for a cleaning machine. Background Technology

[0002] In the TFT-LCD glass substrate production process, the transfer and movement of the glass substrates is crucial. Due to the fragility of the glass substrates and the high precision requirements, manual operation is insufficient to meet the demands of large-scale, high-efficiency, and stable production. Robots, with their high precision, high stability, and programmability, become the ideal transfer tool. They can precisely move glass substrates from one workstation to another according to a pre-programmed sequence, ensuring the continuity and accuracy of the transfer process. In a clean production environment, robots are undisturbed by external factors and can maintain stable movements, significantly improving production efficiency, reducing transfer errors caused by human error, and providing strong support for the smooth operation of the entire TFT-LCD glass substrate production process.

[0003] However, robots are not without their flaws when transferring glass substrates. During operation, factors such as mechanical vibration, program errors, or changes in the external environment may cause glass misalignment. This misalignment may not be noticeable during the transfer phase, but the problem will become apparent in the subsequent placement stage. When the misaligned glass substrate is placed in the designated position, it will collide and be squeezed with surrounding objects or other glass substrates. Because the glass substrate itself is relatively brittle, such collisions and squeezing can easily cause it to crack or even break. Once abnormal phenomena such as glass breakage occur, it will not only waste raw materials and increase production costs, but also affect the production schedule, reduce the product qualification rate, and cause economic losses to the company. Utility Model Content

[0004] To address the existing problems, this utility model provides a glass placement and positioning device for a cleaning machine, which aims to automatically adjust and correct the glass position, thereby avoiding safety hazards and ensuring the quality of the glass substrate.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A glass placement positioning device for a cleaning machine includes a positioning wheel, a signal sensor, a support base, a servo motor, a displacement sensor, a central controller, conveyor belts, and a telescopic device. The signal sensor is placed in the gap between multiple parallel conveyor belts to detect glass signals. The positioning wheel is mounted on the support base, which is connected to the telescopic device. A displacement sensor is installed at the lower part of the telescopic device, which is connected to the servo motor. The signal sensor, displacement sensor, and servo motor are all connected to the central controller.

[0007] As a further improvement of this utility model, the surface of the positioning wheel is provided with a deformable material layer, which can automatically adjust the contact surface according to the shape and thickness of the glass plate, and the deformable material layer is embedded with a pressure sensor array, which is connected to the central controller.

[0008] As a further improvement of this utility model, there are multiple positioning wheels, each of which is equipped with an independent drive motor, which is connected to the central controller.

[0009] As a further improvement of this utility model, the signal sensor includes a photoelectric sensor and a pressure sensor.

[0010] As a further improvement of this utility model, the support base is provided with a shock-absorbing structure, which is a multi-layer composite shock-absorbing pad composed of rubber layers and spring layers stacked sequentially.

[0011] As a further improvement of this utility model, the support base can adjust the height and angle of the positioning wheel through a threaded adjustment mechanism.

[0012] As a further improvement of this utility model, the displacement sensor is a high-precision laser interferometric displacement sensor.

[0013] As a further improvement of this utility model, the displacement sensor is connected to the central controller via wireless transmission.

[0014] As a further improvement of this utility model, the surface of the conveyor belt is provided with an anti-slip structure, which is a regularly arranged raised texture.

[0015] As a further improvement of this utility model, the telescopic device adopts a high-precision ball screw transmission mechanism inside.

[0016] This utility model has the following beneficial effects: The adjustment structure in this design uses a signal sensor to confirm the state of the glass on the conveying device and a displacement sensor to monitor the positioning status, preventing the glass from breaking due to excessive movement at one time.

[0017] Preferably, the central controller adjusts the drive parameters of the servo motor in real time based on the pressure distribution information fed back by the pressure sensor array, so as to further optimize the positioning accuracy and stability of the positioning wheel to the glass plate.

[0018] Preferably, the central controller controls an independent drive motor to actively rotate and fine-tune the positioning wheel based on the glass plate position information detected by the signal sensor, thereby achieving precise positioning control of the positioning wheel in the horizontal and rotational directions and improving the positioning adaptability to glass plates of different shapes.

[0019] Preferably, a photoelectric sensor is used to detect the presence of a glass plate, and a pressure sensor is used to sense the contact pressure between the glass plate and the conveyor belt. The central controller receives signals from the photoelectric sensor and the pressure sensor to more accurately determine the position and state of the glass plate, reducing misjudgments and omissions.

[0020] Preferably, the rubber layer, spring layer and foam layer are stacked in sequence, which can effectively reduce the impact of vibration generated during the operation of the device on the positioning wheel.

[0021] Preferably, the height and angle of the positioning wheel can be adjusted by the threaded adjustment mechanism to adapt to different specifications of glass plates and actual production needs.

[0022] Preferably, a high-precision laser interferometric displacement sensor is used, with a measurement accuracy down to the micrometer level, which helps to measure the position and displacement of the glass plate.

[0023] Preferably, wireless transmission reduces wiring complexity.

[0024] Preferably, the height and spacing of the raised texture are optimized to effectively prevent the glass plate from sliding during transport.

[0025] Optionally, a high-precision ball screw transmission mechanism can realize the rapid extension and retraction of the positioning wheel, giving the extension and retraction device a fast response and self-locking function. Attached Figure Description

[0026] The accompanying drawings described herein are for illustrative purposes only and do not limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings: Figure 1 This is a top view of a cleaning machine plate positioning device as described in Embodiment 1; Figure 2 This is a side view of a cleaning machine plate positioning device as described in Embodiment 1; The components include: 1. positioning wheel; 2. signal sensor; 3. support base; 4. servo motor; 5. displacement sensor; 6. central controller; 7. conveyor belt; and 8. telescopic device. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0029] Unless otherwise defined below, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Example 1 like Figure 1 As shown, a glass placement positioning device for a cleaning machine includes a positioning wheel, a signal sensor, a support base, a servo motor, a displacement sensor, a central controller, conveyor belts, and a telescopic device. The signal sensor is placed in the gap between multiple parallel conveyor belts to detect glass signals. The positioning wheel is mounted on the support base, which is connected to the telescopic device. A displacement sensor is installed at the lower part of the telescopic device, which is connected to the servo motor. The signal sensor, displacement sensor, and servo motor are all connected to the central controller.

[0031] like Figure 1 As shown, the positioning wheel 1 is mounted on the support base 3. The support base 3 is connected to the servo motor 4 through the telescopic device 8. The forward and reverse rotation of the servo motor 4 controls the forward and backward movement of the telescopic device 8, thereby driving the support base 3 to move forward and backward as a whole. A displacement sensor 5 is placed below the telescopic device 8. The displacement sensor 5 can control the forward distance of the telescopic device 8 to prevent insufficient or excessive forward distance of the telescopic device 8, which would cause positioning deviation, resulting in squeezing or failure to contact the glass, thus failing to achieve the positioning effect.

[0032] Signal sensors 2 are placed under the conveyor belt 7, with two rows of sensors positioned in front and behind. These sensors detect the passage of glass. When glass is placed on the conveyor belt 7, the sensors detect the glass and send a signal to the central controller 6. Upon receiving the signal from the sensors 2, the central controller 6 sends a signal to the servo motor 4, controlling it to rotate forward. This drives the telescopic device 8 forward, causing the positioning wheel 1 to move forward. When the telescopic device 8 reaches the position of the displacement sensor 5, the displacement sensor 5 sends a signal to the central controller 6, indicating that the positioning device has moved to the predetermined distance. At this point, the central controller 6 controls the servo motor 4 to stop rotating forward and maintain this position. Then, the central controller 6 sends a signal to control the conveyor belt 7 to start conveying the glass. When the two rows of sensors 2 no longer detect glass, it indicates that the glass has been conveyed away from this position, and the glass's movement and positioning are complete. The central controller 6 then controls the servo motor 4 to rotate in reverse, causing the telescopic device 8 to move backward, moving the positioning support 3 to the initial predetermined position. This completes one motion cycle.

[0033] like Figure 2 As shown, the telescopic device 8 is connected to the support base 3. The rear end of the telescopic device 8 is connected to the servo motor 4. The servo motor 4 controls the forward and backward movement of the telescopic device 8. The servo motor 4 is connected to the central controller 6. The central controller 6 controls the forward and reverse rotation time of the servo motor through the cooperation of the signal sensor 1 and the displacement sensor 5, thereby completing the positioning in the glass transmission movement.

[0034] The positioning wheel has a deformable material layer on its surface. This deformable material layer can automatically adjust the contact surface according to the shape and thickness of the glass plate. The deformable material layer also has a pressure sensor array embedded in it, which is connected to the central controller.

[0035] There are multiple positioning wheels, each equipped with an independent drive motor, which is connected to the central controller.

[0036] The signal sensors include photoelectric sensors and pressure sensors. In the glass plate positioning device of the washing machine, it can detect whether the glass plate has reached the designated position by emitting and receiving light. When the glass plate blocks the light emitted by the photoelectric sensor, the light intensity received by the receiver changes. The sensor converts this change into an electrical signal and transmits it to the central controller, thereby informing the system that the glass plate is in place. This can be used to preliminarily determine the position of the glass plate during the conveying process. The pressure sensor is set at the contact point between the conveyor belt and the glass plate to sense the contact pressure between the glass plate and the conveyor belt. By measuring this pressure value, the central controller can understand the smoothness of the glass plate during the conveying process and whether any abnormalities have occurred, such as the glass plate tilting or jamming causing abnormal pressure. This helps to more accurately control the movement of components such as the positioning wheels, ensuring accurate positioning of the glass plate.

[0037] The support base is equipped with a shock-absorbing structure, which is a multi-layer composite shock-absorbing pad composed of rubber layers and spring layers stacked sequentially.

[0038] The support thread adjustment mechanism typically consists of a threaded screw and a nut. By rotating the nut, the screw moves linearly within the nut. In the design of the support base, the screw is connected to the support portion of the positioning wheel, and the nut is fixed to other stable structures of the support base.

[0039] The surface of the conveyor belt is provided with an anti-slip structure, which consists of regularly arranged raised textures.

[0040] The telescopic device employs a high-precision ball screw drive mechanism. This mechanism consists of a screw, a nut, and balls. The screw has helical grooves, and the nut also has corresponding helical grooves. The balls are positioned between these grooves. When the screw rotates, the balls roll within the helical grooves, causing the nut to move linearly along the screw. This transmission method converts rotational motion into linear motion, resulting in high transmission efficiency and precision. In the telescopic device of the cleaning machine's plate-laying positioning system, the high-precision ball screw drive mechanism allows for precise control of the telescopic movement. After the central controller issues a command, the servo motor drives the screw to rotate, converting the rotational motion into linear motion of the nut via the ball screw drive mechanism. This, in turn, drives the support base and positioning wheel to move precisely. This ensures that the positioning wheel accurately reaches the designated position, achieving precise positioning of the glass plate and improving the overall positioning accuracy and reliability of the device.

[0041] Example 2 The difference between this embodiment and Embodiment 1 is that: 1) The displacement sensor (5) is a high-precision laser interferometric displacement sensor.

[0042] 2) The displacement sensor (5) is connected to the central controller (6) via wireless transmission.

[0043] High-precision laser interferometric displacement sensors, with measurement accuracy down to the micrometer level, are helpful in measuring the position and displacement of glass plates.

[0044] Wireless transmission reduces wiring complexity.

[0045] Advantages of this utility model: 1. This design is reasonable and has a stable structure. It can automatically position the glass, avoid potential quality problems, improve adjustment efficiency, and ensure the quality of the glass substrate. 2. The adjustment structure in this design uses a signal sensor to confirm the state of the glass on the conveying device and a displacement sensor to monitor the positioning status, preventing the glass from being crushed due to excessive movement at one time.

[0046] The above embodiments are merely one of the implementation methods for achieving the technical solution of this utility model. The scope of protection claimed by this utility model is not limited to this embodiment, but also includes any variations, substitutions, and other implementation methods that are easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A plate positioning device for a cleaning machine, characterized in that, It includes a positioning wheel (1), a signal sensor (2), a support base (3), a servo motor (4), a displacement sensor (5), a central controller (6), a conveyor belt (7), and a telescopic device (8). The signal sensor (2) is placed in the gap between multiple parallel conveyor belts (7) to detect glass signals; The positioning wheel (1) is set on the support base (3), the support base (3) is connected to the telescopic device (8), the lower part of the telescopic device (8) is equipped with a displacement sensor (5), and the telescopic device (8) is connected to the servo motor (4). The signal sensor (2), displacement sensor (5) and servo motor (4) are all connected to the central controller (6).

2. The cleaning machine plate positioning device according to claim 1, characterized in that, The positioning wheel (1) has a deformable material layer on its surface. The deformable material layer can automatically adjust the contact surface according to the shape and thickness of the glass plate. The deformable material layer is embedded with a pressure sensor array, which is connected to the central controller (6).

3. The cleaning machine plate positioning device according to claim 1, characterized in that, There are multiple positioning wheels (1), each positioning wheel (1) is equipped with an independent drive motor, which is connected to the central controller (6).

4. The cleaning machine plate positioning device according to claim 1, characterized in that, The signal sensor (2) includes a photoelectric sensor and a pressure sensor.

5. The cleaning machine plate positioning device according to claim 1, characterized in that, The support base (3) is provided with a shock-absorbing structure, which is a multi-layer composite shock-absorbing pad composed of a rubber layer and a spring layer stacked in sequence.

6. The cleaning machine plate positioning device according to claim 1, characterized in that, The support base (3) can adjust the height and angle of the positioning wheel through a threaded adjustment mechanism.

7. The cleaning machine plate positioning device according to claim 1, characterized in that, The displacement sensor (5) is a high-precision laser interferometric displacement sensor.

8. The cleaning machine plate positioning device according to claim 1, characterized in that, The displacement sensor (5) is connected to the central controller (6) via wireless transmission.

9. A cleaning machine plate positioning device according to claim 1, characterized in that, The surface of the conveyor belt (7) is provided with an anti-slip structure, which is a regularly arranged raised texture.

10. A cleaning machine plate positioning device according to claim 9, characterized in that, The telescopic device (8) uses a high-precision ball screw transmission mechanism inside.

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