Precise intelligent control dispensing equipment

Abstract

The utility model relates to a kind of precision intelligent control dispensing equipment, belong to dispensing technical equipment field.The equipment includes: electrostatic adsorption tray, for carrying and rotating sheet material to be processed;Automatic optical detector, for detecting sheet height and dispensing quality;Dispensing part, including piezoelectric valve and dispensing head;First sensor, for sensing sheet position and motion trajectory;Second sensor, for sensing sheet height;Driving part, with automatic optical detector and dispensing part connection, for driving its vertical movement;Controller, with automatic optical detector, second sensor and driving part electric connection;Negative pressure device, with dispensing part and electrostatic adsorption tray collaborative arrangement, for providing and maintaining corresponding negative pressure environment in dispensing process;Controller adjusts the height position of automatic optical detector and dispensing part according to two sensor detection data control driving part, to eliminate Z-axis direction error, to solve the problem of insufficient dispensing precision, poor stability and low consistency.

Description

Technical Field

[0001] This utility model relates to the field of dispensing technology equipment, and in particular to a precision intelligent dispensing device. Background Technology

[0002] A dispensing machine, also known as a glue applicator or glue applicator, is an automated device that controls the dispensing or coating of fluids onto the surface or interior of a product. It is widely used in industrial dispensing and bonding, and electronic component packaging. With the advancement of industrialization and the increase in labor costs, the requirements for the automation level and operational precision of dispensing equipment are becoming increasingly stringent.

[0003] Currently, domestically produced multi-axis intelligent dispensing machines have achieved a certain level of dispensing accuracy and speed in single-component dispensing. However, most products still suffer from problems such as insufficient dispensing accuracy, poor dispensing stability, and unsatisfactory dispensing consistency. Especially in some precision manufacturing fields, such as semiconductor packaging and precision electronic component manufacturing, existing dispensing equipment is struggling to meet the increasingly stringent process requirements.

[0004] Insufficient dispensing accuracy is primarily manifested in height control along the Z-axis. Vibration generated during the high-speed movement of the dispensing head, coupled with limitations in platform positioning accuracy, leads to deviations in the adhesive spray position, affecting dispensing quality and product consistency. This issue has become a major technical bottleneck restricting the application of dispensing equipment in high-end manufacturing. Utility Model Content

[0005] Therefore, it is necessary to provide a precision intelligent dispensing device to address the current problems of insufficient dispensing accuracy, poor stability, and low consistency.

[0006] This utility model provides a precision intelligent dispensing device, comprising:

[0007] Electrostatic adsorption tray, used to hold and rotate the sheet material to be processed;

[0008] An automated optical inspection instrument is used to inspect sheet height and dispensing quality;

[0009] Dispensing components, including piezoelectric valves and dispensing heads;

[0010] The first sensor, set on an electrostatic adsorption tray, is used to sense the position and movement trajectory of the sheet.

[0011] The second sensor is mounted on the dispensing component and is used to sense the height of the sheet.

[0012] The drive unit, connected to the automatic optical inspection instrument and the dispensing unit, is used to drive their vertical movement;

[0013] The controller is electrically connected to the automatic optical inspection instrument, the second sensor, and the drive unit;

[0014] The negative pressure device, in conjunction with the dispensing components and the electrostatic adsorption tray, is used to provide and maintain a corresponding negative pressure environment during the dispensing process;

[0015] The first and second sensors constitute a dual detection system. The controller controls the drive components to adjust the height and position of the automatic optical detector and the dispensing component based on the detection data from the two sensors, so as to eliminate Z-axis direction error.

[0016] In one embodiment, it further includes:

[0017] A plasma cleaning device is installed in front of the dispensing station to clean and activate the edge surface of the sheet. The plasma cleaning device is equipped with a third sensor to sense the height of the sheet. The driving component is connected to the plasma cleaning device to drive its vertical movement.

[0018] In one embodiment, the driving component includes three independent driving devices, which are respectively connected to an automatic optical inspection instrument, a plasma cleaning device, and a dispensing component. The controller independently controls each driving device to adjust the height position of the corresponding device based on the detection data of the first sensor, the second sensor, and the third sensor.

[0019] In one embodiment, the dispensing component further includes an injection cylinder and a connecting tube. The injection cylinder is connected to the connecting tube, and the connecting tube is connected to the dispensing head. The injection cylinder is provided with an air inlet pipe, and an electromagnetic valve is provided inside the air inlet pipe for controlling the gas input.

[0020] In one embodiment, the bottom of the electrostatic adsorption tray is connected to a rotating shaft, which is connected to a drive motor. The drive motor is electrically connected to a controller and receives control signals to drive the electrostatic adsorption tray to rotate.

[0021] In one embodiment, the negative pressure device provides a negative pressure environment with parameters of 500–100,000 Pa and an ambient temperature of 20–30 °C.

[0022] In one embodiment, the piezoelectric valve is equipped with a detection device for real-time detection of whether the dispensing head is blocked, and the detection data is transmitted to the controller.

[0023] In one embodiment, the device further includes:

[0024] The time relay, electrically connected to the controller, is used to precisely control the dispensing time parameters.

[0025] In one embodiment, the controller is configured to perform pre-dispensing height detection, post-dispensing quality detection, and re-dispensing control programs, and the automatic optical inspection instrument and the dispensing component are connected to the controller via a data bus to form a closed-loop feedback structure.

[0026] In one embodiment, the dispensing head is a piezoelectric valve spray dispensing head.

[0027] The aforementioned precision intelligent dispensing equipment uses an electrostatic adsorption tray to stably support and rotate the sheet to be processed, ensuring precise positioning and continuous processing. An automatic optical inspection instrument detects the sheet height and dispensing quality in real time, achieving high-precision visual feedback. The dispensing components include a piezoelectric valve and a dispensing head, enabling precise fluid jet control. A first sensor is set on the electrostatic adsorption tray to sense the sheet position and movement trajectory in real time, while a second sensor is set on the dispensing component to sense the sheet height in real time. Together, they form a dual detection system, providing comprehensive data input. The drive unit drives the automatic optical inspection instrument and the dispensing component to move vertically according to the controller's instructions, adjusting their height and position. The controller integrates and processes the sensor data, achieving closed-loop control through electrical connection to optimize dispensing parameters. A negative pressure device, in conjunction with the dispensing component and the electrostatic adsorption tray, provides and maintains a corresponding negative pressure environment, reducing bubble formation and ensuring uniform adhesive adhesion. Through the dual detection system and real-time height adjustment, Z-axis errors are effectively eliminated, thereby solving the problems of insufficient dispensing accuracy, poor stability, and low consistency, significantly improving the level of automation and operational reliability. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a precision intelligent dispensing device according to one embodiment;

[0030] Figure 2 This is a schematic diagram of the electrical connection principle of a precision intelligent dispensing device according to one embodiment;

[0031] Figure 3 for Figure 1 A schematic diagram of the dispensing component in the embodiment.

[0032] Figure label:

[0033] 110. Electrostatic adsorption tray; 120. Automatic optical inspection instrument; 130. Dispensing component; 132. Piezoelectric valve; 134. Dispensing head; 136. Injection cylinder; 138. Connecting pipe; 140. First sensor; 150. Second sensor; 160. Drive component; 170. Controller; 180. Rotating shaft; 190. Drive motor; 210. Plasma cleaning equipment. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification 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 in this specification includes any and all combinations of one or more of the associated listed items.

[0039] The following is combined with Figures 1-3 This invention describes a precision intelligent dispensing device.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment, a precision intelligent dispensing device includes an electrostatic adsorption tray 110, an automatic optical inspection instrument 120, a dispensing component 130, a first sensor 140, a second sensor 150, a drive component 160, a controller 170, and a negative pressure device (not shown).

[0041] The electrostatic adsorption tray 110 is used to support and rotate the sheet to be processed. Its bottom is connected to a rotating shaft 180, which is directly and fixedly connected to the output end of a drive motor 190. The drive motor 190 is electrically connected to a controller 170 and receives its control signals. The rotating shaft 180 and the electrostatic adsorption tray 110 form a rigid connection. The drive motor 190 transmits power to the rotating shaft 180 through a coupling. The controller 170 precisely controls the start, stop, speed, and direction of rotation of the drive motor 190 through pulse signals. When the controller 170 issues a command, the drive motor 190 drives the rotating shaft 180 to perform precise rotational motion, thereby driving the electrostatic adsorption tray 110 to achieve controllable circular motion, ensuring that the supported sheet can be positioned and continuously processed according to a preset trajectory.

[0042] An automatic optical inspection instrument 120 is used to inspect the height of the sheet and the quality of the adhesive dispensing. The automatic optical inspection instrument 120 is located above the electrostatic adsorption tray 110 and is connected to the drive unit 160 via a motion slide rail to achieve vertical movement. Its optical inspection head faces the edge gap of the sheet and includes a high-resolution CCD sensor and an infrared ranging module. During inspection, the infrared ranging module first emits a detection beam and receives the reflected signal to accurately measure the relative distance between each point on the sheet surface and the inspection instrument, thereby obtaining height data. During the dispensing process, the CCD sensor continuously acquires image information of the dispensing area at the edge of the sheet. The controller 170 performs real-time grayscale analysis and edge recognition processing on the images. By comparing with preset adhesive contour parameters, it judges the uniformity of adhesive coverage, width consistency, and whether there are defects such as insufficient or excessive adhesive. The inspection data is transmitted to the controller 170 in real time via a data bus. When an unqualified dispensing quality is detected, a re-adhesion command is immediately triggered, forming a closed-loop control loop of detection-judgment-execution.

[0043] The dispensing component 130 consists of a piezoelectric valve 132 and a dispensing head 134. The dispensing head 134 is a piezoelectric valve spray dispensing head. The piezoelectric valve 132 is equipped with a detection device (not shown) to detect whether the dispensing head 134 is blocked in real time and transmit the detection data to the controller 170. Optionally, the piezoelectric valve 132 integrates a high-precision detection device, which consists of a pressure sensor and a flow monitoring module. The pressure sensor is embedded in the fluid channel wall of the piezoelectric valve and directly contacts the colloidal medium. The flow monitoring module is aligned parallel to the dispensing head's inlet path via an optical sensing unit. The detection device establishes a real-time communication connection with the controller 170 via a data cable. When the piezoelectric valve 132 performs a dispensing operation, the pressure sensor continuously monitors the pressure change curve in the fluid channel, and the flow monitoring module simultaneously collects the flow rate data of the colloidal medium. The two sets of data are compared and analyzed by the built-in rules of the controller 170. When an abnormal increase in pressure is detected and a significant decrease in flow rate is detected, it is immediately determined that the dispensing head is blocked. The controller 170 then triggers an alarm signal and attempts to restore flow by adjusting the driving voltage and frequency parameters of the piezoelectric valve 132. The entire process achieves a millisecond-level response.

[0044] The first sensor 140 is mounted on the electrostatic adsorption tray 110 to sense the position and movement trajectory of the sheet. Optionally, the first sensor 140 is fixedly mounted on the top of the electrostatic adsorption tray 110, employing a photoelectric or capacitive sensing unit, directly facing the supported sheet, to detect the edge position and rotational movement trajectory of the sheet in real time, and transmits the data to the controller 170 via an electrical signal. The second sensor 150 is mounted on the dispensing component 130 to sense the height of the sheet. Optionally, the second sensor 150 is integrated into the housing of the piezoelectric valve 132 of the dispensing component 130, located near the dispensing head 134, employing an infrared or ultrasonic ranging module, vertically aligned with the sheet surface, to continuously measure the relative height between the sheet and the dispensing head, and its detection data is fed back to the controller 170 in real time.

[0045] The drive unit 160 is connected to the automatic optical inspection unit 120 and the dispensing unit 130 and drives them to move vertically.

[0046] The controller 170 is electrically connected to the automatic optical inspection instrument 120, the second sensor 150, and the drive unit 160, processes sensor data, and outputs control commands. The controller 170 is configured to execute pre-dispensing height detection, post-dispensing quality detection, and re-dispensing control programs, and the automatic optical inspection instrument 120 and the dispensing unit 130 are connected to the controller 170 via a data bus to form a closed-loop feedback structure. Optionally, the controller 170 establishes a bidirectional connection with the automatic optical inspection instrument 120 and the dispensing component 130 via a data bus, wherein the data bus uses a standard interface module to realize signal transmission. The controller 170 contains processing circuitry and a storage unit, and is configured to perform a pre-dispensing height detection function. By receiving the sheet height electrical signal collected in real time by the second sensor 150, the controller processes the signal through hardware circuitry and outputs a control command to drive the dispensing component 130 to move vertically along the motion slide rail to a preset height. In the post-dispensing quality inspection stage, the controller 170 acquires the image data of the dispensing area collected by the automatic optical inspection instrument 120 and performs real-time analysis using a built-in comparator circuit. When a glue defect is detected, the controller immediately triggers a glue replenishment mechanism. During the glue replenishment process, the controller 170 outputs a drive signal through a coordinate calculation module to control the dispensing component to perform precise glue replenishment. After completion, the automatic optical inspection instrument verifies the result again, forming a closed-loop feedback control structure composed of sensors, actuators, and controllers connected by hardware, ensuring the physical coordination and stability of the dispensing process.

[0047] A negative pressure device (not shown) is configured in conjunction with the dispensing component 130 and the electrostatic adsorption tray 110 to provide and maintain a corresponding negative pressure environment during the dispensing process. Specifically, it provides a negative pressure environment in the range of 500–100,000 Pa and 20–30°C. The first and second sensors constitute a dual detection system. The controller adjusts the height position of the drive component based on the data from the two sensors to eliminate Z-axis errors. A time relay connected to the controller precisely controls the dispensing time parameters, forming a closed-loop feedback structure to ensure dispensing accuracy.

[0048] This embodiment achieves stable positioning and rotation processing of the sheet material through an electrostatic adsorption tray 110. Combined with real-time detection of position and height data by dual sensors, the vertical movement mechanism is precisely compensated for Z-axis errors via a controller 170. The piezoelectric valve 132 and dispensing head 134 achieve precise adhesive spraying under negative pressure, effectively avoiding bubble formation and ensuring adhesive uniformity. The automatic optical inspection instrument 120 monitors the quality before and after dispensing, and the blockage detection function ensures continuous and stable dispensing process. The closed-loop control system integrates precise control of time parameters, solving the problems of insufficient positioning accuracy, poor adhesive consistency, and low stability of traditional dispensing machines, significantly improving dispensing quality and process reliability in high-precision industrial scenarios.

[0049] In this embodiment, the present invention also includes a plasma cleaning device 210, which is disposed in front of the dispensing station and is used to clean and activate the edge surface of the sheet. The plasma cleaning device 210 is equipped with a third sensor (not shown) for sensing the height of the sheet. A drive unit 160 is connected to the plasma cleaning device 210 and is used to drive its vertical movement. The drive unit 160 includes three independent drive devices, which are respectively connected to the automatic optical inspection instrument 120, the plasma cleaning device 210, and the dispensing unit 130. The controller 170 independently controls each drive device to adjust the height position of the corresponding device based on the detection data of the first sensor 140, the second sensor 150, and the third sensor. Preferably, the automatic optical inspection instrument 120, the plasma cleaning device 210, and the dispensing unit 130 are on the same horizontal plane and are perpendicular to the drive motor 190 and parallel to the electrostatic adsorption tray 110. Optionally, the ion cleaning equipment 210 is set at the front of the dispensing station and located at the process position between the automatic optical inspection instrument 120 and the dispensing part 130. It is connected to an independent drive device via a motion slide rail to achieve vertical movement. The surface of the plasma cleaning equipment 210 is equipped with a third sensor, which uses an infrared ranging module to be vertically aligned with the sheet surface to sense the edge height of the sheet in real time. The drive unit 160 includes three independent drive devices, which are mechanically connected to the automatic optical inspection instrument 120, the plasma cleaning equipment 210, and the dispensing unit 130, respectively. Each drive device is independently controlled by the controller 170. The controller 170 is electrically connected to the first sensor 140, the second sensor 150, and the third sensor, and receives the height detection data of the three sensors in real time. When the equipment is running, the plasma cleaning equipment 210 first performs surface cleaning and activation treatment on the edge of the sheet. The controller 170 simultaneously adjusts its height position through the drive devices according to the data of the third sensor to ensure that the cleaning head maintains the optimal working distance from the sheet. After the treatment is completed, the system automatically switches to the dispensing process, forming a continuous automated process of cleaning-inspection-dispensing. Through the coordination of triple sensor data and independent drive control, multi-station height adaptive adjustment is achieved, which comprehensively improves the surface treatment quality of the sheet and the dispensing accuracy.

[0050] In this embodiment, the dispensing component 130 further includes an injection cylinder 136 and a connecting tube 138. The injection cylinder 136 is connected to the connecting tube 138, and the connecting tube 138 is connected to the dispensing head 134. An air inlet pipe is provided on the injection cylinder 136, and a solenoid valve is installed inside the air inlet pipe to control the gas input. The injection cylinder 136 and the connecting tube 138 are sealed and fixed. The other end of the connecting tube 138 is directly connected to the dispensing head 134 to form a fluid channel. An air inlet pipe is provided at the top of the injection cylinder 136, and a solenoid valve is integrated inside the air inlet pipe to control the on / off of compressed gas. The syringe 136 is installed on the side of the piezoelectric valve 132. The dispensing material is delivered to the dispensing head 134 through the connecting pipe 138. The air inlet pipe is arranged axially perpendicular to the top of the syringe. When dispensing is performed, the solenoid valve opens upon receiving the instruction from the controller 170. Compressed gas is injected into the inner cavity of the syringe 136 through the air inlet pipe, pushing the adhesive material in the syringe to be delivered to the dispensing head through the connecting pipe 138. Finally, the dispensing head controlled by the piezoelectric valve 132 completes the precise spraying.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A precision intelligent dispensing device, characterized in that, include: Electrostatic adsorption tray, used to hold and rotate the sheet material to be processed; An automated optical inspection instrument is used to inspect sheet height and dispensing quality; Dispensing components, including piezoelectric valves and dispensing heads; The first sensor, set on an electrostatic adsorption tray, is used to sense the position and movement trajectory of the sheet. The second sensor is mounted on the dispensing component and is used to sense the height of the sheet. The drive unit, connected to the automatic optical inspection instrument and the dispensing unit, is used to drive their vertical movement; The controller is electrically connected to the automatic optical inspection instrument, the second sensor, and the drive unit; The negative pressure device, in conjunction with the dispensing components and the electrostatic adsorption tray, is used to provide and maintain a corresponding negative pressure environment during the dispensing process; The first and second sensors constitute a dual detection system. The controller controls the drive components to adjust the height and position of the automatic optical detector and the dispensing component based on the detection data from the two sensors, so as to eliminate Z-axis direction error.

2. The precision intelligent dispensing equipment according to claim 1, characterized in that, Also includes: A plasma cleaning device is installed in front of the dispensing station to clean and activate the edge surface of the sheet. The plasma cleaning device is equipped with a third sensor to sense the height of the sheet. The driving component is connected to the plasma cleaning device to drive its vertical movement.

3. The precision intelligent dispensing equipment according to claim 2, characterized in that, The drive unit includes three independent drive devices, which are respectively connected to an automatic optical inspection instrument, a plasma cleaning device, and a dispensing component. The controller independently controls each drive device to adjust the height position of the corresponding device based on the detection data of the first sensor, the second sensor, and the third sensor.

4. The precision intelligent dispensing equipment according to claim 1, characterized in that, The dispensing component also includes an injection cylinder and a connecting tube. The injection cylinder is connected to the connecting tube, and the connecting tube is connected to the dispensing head. The injection cylinder is provided with an air inlet pipe, and an electromagnetic valve is provided inside the air inlet pipe to control the gas input.

5. The precision intelligent dispensing equipment according to claim 1, characterized in that, The bottom of the electrostatic adsorption tray is connected to a rotating shaft, which is connected to a drive motor. The drive motor is electrically connected to a controller and receives control signals to drive the electrostatic adsorption tray to rotate.

6. The precision intelligent dispensing equipment according to claim 1, characterized in that, The negative pressure device provides a negative pressure environment with parameters of 500–100000 Pa and an ambient temperature of 20–30 °C.

7. The precision intelligent dispensing equipment according to claim 1, characterized in that, The piezoelectric valve is equipped with a detection device to detect whether the dispensing head is blocked in real time and transmit the detection data to the controller.

8. The precision intelligent dispensing equipment according to claim 1, characterized in that, The device also includes: The time relay, electrically connected to the controller, is used to precisely control the dispensing time parameters.

9. The precision intelligent dispensing equipment according to claim 1, characterized in that, The controller is configured to perform pre-dispensing height detection, post-dispensing quality detection, and glue replenishment control programs, and the automatic optical inspection instrument and the dispensing component are connected to the controller via a data bus to form a closed-loop feedback structure.

10. The precision intelligent dispensing equipment according to claim 1, characterized in that, The dispensing head is a piezoelectric valve spray dispensing head.

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