Micro-object adsorption confirmation pressure switch

Abstract

The utility model provides a kind of micro object adsorption confirmation pressure switch, including pipeline main part and MCU control module;Pipeline main part is equipped with gauge pressure sensor, and the both sides of gauge pressure sensor are equipped with detection pin, and two groups of detection pin bottom end are equipped in pipeline main part, and the other end of two groups of detection pin is connected differential pressure sensor away from pipeline main part, and gauge pressure sensor and differential pressure sensor are electrically connected with MCU control module. Through the cooperation of absolute pressure gauge pressure sensor and differential pressure type MEMS sensor, the suction nozzle adsorption state is determined, without the need for rear-end visual inspection, avoiding production failure and secondary processing, ensuring continuous operation of production line. At the same time, the device structure is adapted to the scene, responds quickly, can confirm adsorption before handling, reduces repeated operation caused by misjudgment, increases the accuracy of determination, and improves the overall efficiency of the production line.

Description

Technical Field

[0001] This utility model belongs to the field of industrial automation process control technology, and more specifically, it relates to a pressure switch for confirming the adsorption of tiny objects. Background Technology

[0002] In industrial automation scenarios involving the picking up and mounting of micro-objects, such as micro-wafer bonding and micro-component tape taping, small nozzles are typically used to pick up and transport objects. Due to the extremely small size of the nozzles, the pressure difference within the system between the state with and without objects is often very small. For example, the pressure may be -78.0 kPa when no object is picked up, while the pressure is only -78.5 kPa when an object is picked up, resulting in a very small pressure difference.

[0003] Existing pressure switches are prone to misinterpretation of minute pressure differences due to zero drift or errors, leading to frequent false alarms. To avoid these false alarms, many devices have had to adopt a no-adsorption confirmation operating mode or rely on backend visual inspection to determine whether an object has been adsorbed. However, the no-confirmation mode can cause production errors due to continued operation with unadsorbed objects; backend visual inspection, on the other hand, sacrifices some production efficiency and affects the continuous and stable operation of the production line due to secondary processing of unadsorbed objects or waiting periods.

[0004] Therefore, for scenarios involving the adsorption of small objects, a pressure detection device is needed that can accurately and quickly determine the adsorption state to solve the problem of inaccurate adsorption determination caused by small pressure differences in existing technologies, thereby improving production efficiency and reliability. Utility Model Content

[0005] To address the aforementioned technical problems, this invention provides a pressure switch for confirming the adsorption of small objects, thereby resolving the issue that existing small suction nozzles often fail to accurately determine suction force, easily sacrificing adsorption efficiency and thus reducing production efficiency.

[0006] The purpose and function of this utility model's micro-object adsorption confirmation pressure switch are achieved through the following specific technical means:

[0007] A pressure switch for confirming the adsorption of a small object includes a tubing body and an MCU control module. A gauge pressure sensor is installed in the tubing body. The gauge pressure sensor has detection pins on both sides. The bottom ends of the two sets of detection pins are inserted into the tubing body, and the other ends of the two sets of detection pins away from the tubing body are connected to a differential pressure sensor. Both the gauge pressure sensor and the differential pressure sensor are electrically connected to the MCU control module.

[0008] A pressure switch for confirming the adsorption of a small object includes a display module and a button module, both of which are electrically connected to the MCU control module.

[0009] The above technical solution further includes that the gauge pressure sensor is an absolute pressure gauge pressure sensor.

[0010] The above technical solution further includes that the differential pressure sensor is a micro differential pressure MEMS sensor.

[0011] The above technical solution further includes that the range of the gauge pressure sensor is greater than the range of the differential pressure sensor.

[0012] The above technical solution further includes that the two sets of detection pins are symmetrically distributed on the main body of the pipeline with the gauge pressure sensor as the midpoint.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The gauge pressure sensor and differential pressure sensor work together. The gauge pressure sensor monitors whether the negative pressure is within the acceptable range, while the differential pressure sensor monitors the pressure difference between two points in the pipeline. The gauge pressure sensor is an absolute pressure type, and the differential pressure sensor is a micro differential pressure MEMS sensor. The combination of the two can accurately determine whether the nozzle has adsorbed an object. This eliminates the need for backend visual inspection, avoiding production errors caused by continuing operation with unadsorbed objects. It also eliminates the need for secondary processing or waiting for unadsorbed objects, reducing ineffective steps in the production process and ensuring continuous and stable operation of the production line.

[0015] 2. Both the gauge pressure sensor and the differential pressure sensor are electrically connected to the MCU control module, with a display module and a button module assisting in operation. This design is suitable for scenarios involving the adsorption of small objects. The gauge pressure sensor has a wider range than the differential pressure sensor, and the detection pins are symmetrically distributed to improve detection stability. Adsorption status is determined by detecting the pressure difference, resulting in a fast response time. Adsorption confirmation can be completed before handling, reducing repetitive operations caused by misjudgments, improving the overall operating efficiency of the production line, and increasing the accuracy of adsorption determination. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembled structure of this utility model.

[0017] Figure 2 Figure 1 A cross-sectional structural diagram.

[0018] Figure 3 This is a schematic diagram of the principle of this utility model.

[0019] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0020] 1. Pipeline body; 2. Gauge pressure sensor; 3. Differential pressure sensor; 4. MCU control module; 5. Display module; 6. Button module; 101. Detection pin. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0022] Example:

[0023] like Figures 1 to 3 As shown, this utility model provides a pressure switch for confirming the adsorption of small objects, including a pipeline body 1 and an MCU control module 4. A gauge pressure sensor 2 is installed in the pipeline body 1. The gauge pressure sensor 2 has detection pins 101 on both sides. The bottom ends of the two sets of detection pins 101 are inserted into the pipeline body 1, and the other ends of the two sets of detection pins 101, away from the pipeline body 1, are connected to a differential pressure sensor 3. Both the gauge pressure sensor 2 and the differential pressure sensor 3 are electrically connected to the MCU control module 4. The gauge pressure sensor 2, inserted in the pipeline body 1, can directly monitor the pressure inside the pipeline. The two sets of detection pins 101, inserted in the pipeline body 1 and connected to the differential pressure sensor 3, can obtain the pressure difference between two points inside the pipeline. The gauge pressure sensor 2 and the differential pressure sensor 3 collect pressure information from different dimensions, forming complementary detection, covering the pressure parameters required for adsorption determination, and providing a data basis for accurate judgment.

[0024] Both gauge pressure sensor 2 and differential pressure sensor 3 are electrically connected to the MCU control module 4, enabling the pressure data collected by both to be transmitted to the MCU control module 4 in real time. Centralized data processing allows for rapid pressure analysis and judgment, avoiding delays caused by scattered data processing, ensuring timely adsorption state determination, and meeting the needs of efficient production line operation. The detection pins 101 are arranged with gauge pressure sensor 2 on both sides, forming a specific detection layout within the pipeline body 1. This layout spatially correlates the overall pressure detection of gauge pressure sensor 2 with the two-point differential pressure detection of detection pins 101, making the collected pressure data more targeted, reducing irrelevant interference, and improving detection accuracy.

[0025] All components are integrated into a single structure via the main pipeline 1 and electrical connections. The gauge pressure sensor 2, detection pin 101, differential pressure sensor 3, and MCU control module 4 have clearly defined functions yet work in concert. The gauge pressure sensor 2 monitors the base pressure, the detection pin 101 and differential pressure sensor 3 capture changes in pressure difference, and the MCU control module 4 processes the data to form a complete detection process, ensuring the stable implementation of the adsorption determination function.

[0026] Gauge pressure sensor 2 is an absolute pressure gauge pressure sensor; differential pressure sensor 3 is a micro differential pressure MEMS sensor; the range of gauge pressure sensor 2 is greater than the range of differential pressure sensor 3. The gauge pressure sensor 2 is an absolute pressure type, which can directly measure the absolute pressure value in the pipeline without relying on the external ambient air pressure as a reference. This ensures that the pressure detection data is stable under different environmental conditions, providing a reliable basic pressure parameter for adsorption determination. The differential pressure sensor 3 is a micro differential pressure type MEMS sensor with high resolution, which can capture the small pressure difference between two points in the pipeline, meeting the pressure difference detection requirements when small objects are adsorbed, and ensuring the judgment of the adsorption state. The combination of the absolute pressure gauge pressure sensor and the micro differential pressure type MEMS sensor, the former provides an overall pressure reference and the latter captures minute pressure difference changes, and the combination of different range characteristics forms a complementary detection mechanism, improving the accuracy and stability of adsorption determination. The gauge pressure sensor 2 can be a BMP280 absolute pressure gauge pressure sensor; the differential pressure sensor 3 can be an NPI-19-010DG micro differential pressure sensor; the MCU control module 4 can be an STM32F103C8T6 control module.

[0027] The gauge pressure sensor 2 has a larger range than the differential pressure sensor 3, which can cover a larger pressure range that may occur in the adsorption scenario and is used to monitor whether the overall pressure is within the acceptable range; the differential pressure sensor 3 has a smaller range and is adapted to the detection of small differential pressure. The ranges of the two sensors match different detection needs and improve the targeting of the detection.

[0028] like Figures 1 to 2 As shown, two sets of detection pins 101 are symmetrically distributed on the pipeline body 1 with the gauge pressure sensor 2 as the midpoint. This symmetrical distribution ensures that the two detection points are equidistant from the gauge pressure sensor 2, reducing pressure detection deviations caused by positional differences and ensuring consistency between differential pressure data and overall pressure data. The symmetrical distribution also creates a balanced detection layout for the detection pins 101 within the pipeline body 1, avoiding localized airflow interference caused by unilateral placement. This allows the collected pressure difference between the two points to better reflect the true flow state within the pipeline, improving the objectivity of differential pressure detection. Furthermore, the symmetrical distribution simplifies the internal structure of the pipeline body 1, facilitating the installation and fixing of the detection pins 101. It also makes the distribution of pressure detection points on the pipeline more regular, reducing assembly errors caused by complex layouts and ensuring detection stability.

[0029] like Figure 3As shown, a pressure switch for confirming the adsorption of small objects also includes a display module 5 and a button module 6, both of which are electrically connected to an MCU control module 4. The display module 5, electrically connected to the MCU control module 4, receives pressure data and judgment results processed by the MCU control module 4 and presents the information in a visual format. Operators can directly obtain key information such as adsorption status and pressure values ​​through the display module 5 without additional equipment assistance, enabling intuitive control over the device's operating status. The button module 6, electrically connected to the MCU control module 4, allows operators to input commands to the MCU control module 4 via buttons to complete operations such as parameter setting and mode switching. Commands are directly transmitted to the control core, meeting the adjustment needs of detection standards under different operating conditions and improving the device's adaptability.

[0030] Display module 5 and button module 6 work together to form a closed loop for human-machine interaction. Operators observe the current status through display module 5 and issue adjustment commands through button module 6 as needed. These commands are executed by MCU control module 4, and the results are then fed back through display module 5, achieving instant correspondence between operation and feedback and simplifying the operation process. The addition of display module 5 and button module 6 enables the device to have independent parameter configuration and status monitoring capabilities, eliminating the need for external control systems for debugging and operational monitoring. The device can independently perform functions such as adsorption determination, parameter adjustment, and information display, improving overall independence and ease of use, and adapting to deployment needs in different scenarios.

[0031] The above description is merely an embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A micro-object adsorption confirmation pressure switch, comprising a pipeline main body (1) and an MCU control module (4), characterized in that: The main body of the pipeline (1) is provided with a gauge pressure sensor (2). The gauge pressure sensor (2) has detection pins (101) on both sides. The bottom ends of the two sets of detection pins (101) are inserted into the main body of the pipeline (1), and the other ends of the two sets of detection pins (101) away from the main body of the pipeline (1) are connected to a differential pressure sensor (3). Both the gauge pressure sensor (2) and the differential pressure sensor (3) are electrically connected to the MCU control module (4).

2. The micro-object adsorption confirmation pressure switch according to claim 1, comprising a display module (5) and a button module (6), characterized in that: Both the display module (5) and the button module (6) are electrically connected to the MCU control module (4).

3. The micro-object adsorption confirmation pressure switch according to claim 2, characterized in that: The gauge pressure sensor (2) is an absolute pressure gauge pressure sensor.

4. The micro-object adsorption confirmation pressure switch according to claim 3, characterized in that: The differential pressure sensor (3) is a micro differential pressure type MEMS sensor.

5. The micro-object adsorption confirmation pressure switch according to claim 4, characterized in that: The range of the gauge pressure sensor (2) is greater than the range of the differential pressure sensor (3).

6. The micro-object adsorption confirmation pressure switch according to claim 1, characterized in that: The two sets of detection pins (101) are symmetrically distributed on the pipeline body (1) with the gauge pressure sensor (2) as the midpoint.

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