Pore detection apparatus

Abstract

The utility model discloses a kind of air hole detection equipment, including machine table, testing device and gas circuit device, testing device includes mounting bracket, driving part and detection assembly, mounting bracket is set to machine table, driving part is set to mounting bracket, for providing the driving force in up-down direction, and, detection assembly includes mounting seat, sealing head and blowing head, mounting seat is connected with driving part, sealing head and blowing head are arranged in mounting seat in parallel, for respectively acting on the two ends of air hole;Gas circuit device is connected with blowing head, for blowing gas to air hole by blowing head to test the quality of air hole.Driving part drives detection assembly to move downward, blowing head is resisted in one end of air hole downward, sealing head and the other end of air hole are in separation state, and gas circuit device can test the airflow of air hole.Or, driving part drives detection assembly to move downward, blowing head is resisted in one end of air hole downward;Sealing head is resisted in the other end of air hole downward, in this way, gas circuit device can test the air tightness of air hole.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, and in particular to a porosity detection device. Background Technology

[0002] In related technologies, the airtightness of product pores needs to be tested before the product leaves the factory, such as testing the airtightness of the earpiece hole, microphone hole, or sensor hole of a mobile phone screen. However, existing pore testing equipment usually only tests the airtightness of the product. Although this testing method can screen out products with poor pore quality, it is no longer sufficient for users with high requirements. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a porosity detection device, which can better detect the quality of porosity.

[0004] This application provides a porosity detection device for detecting pores in a product; the porosity detection device includes:

[0005] Machine tool;

[0006] The testing device includes a mounting frame, a driving component, and a testing assembly. The mounting frame is disposed on the machine base, and the driving component is disposed on the mounting frame. The testing assembly includes a mounting base, a sealing head, and an air blowing head. The mounting base is connected to the driving component. The sealing head and the air blowing head are disposed side by side on the mounting base. The driving component is used to drive the mounting base to move toward the product, so as to allow the air blowing head to act on one end of the air hole or the sealing head and the air blowing head to act on both ends of the air hole respectively.

[0007] An air path device, connected to the air blowing head, is used to blow air into the air hole through the air blowing head to test the quality of the air hole.

[0008] According to some embodiments of the present invention, the driving component includes a first driving component and a second driving component, the first driving component is connected to the mounting bracket, the second driving component is connected to the first driving component, and the mounting base is connected to the second driving component;

[0009] Wherein, one of the first driving member and the second driving member is used to drive the air blowing head to act on one end of the air hole; the first driving member and the second driving member simultaneously drive the mounting base to move, so that the sealing head and the air blowing head act on one end of the air hole respectively.

[0010] According to some embodiments of this utility model, a first pressure sensor is provided between the mounting base and the sealing head to detect the force exerted by the air blowing head on the product; a second pressure sensor is provided between the mounting base and the air blowing head to detect the force exerted by the air blowing head on the product.

[0011] According to some embodiments of the present invention, the sealing head is provided with an extension arm inclined toward the air blowing head, and the extension end of the extension arm is used to act on one end of the air hole.

[0012] According to some embodiments of the present invention, the working end of the air blowing head is provided with a first elastic element, and the working end of the sealing head is provided with a second elastic element.

[0013] According to some embodiments of the present invention, the air circuit device includes a first test air circuit, a second test air circuit, and a three-way valve, wherein the first test air circuit is connected to the first end of the three-way valve, the second test air circuit is connected to the second end of the three-way valve, and the third end of the three-way valve is connected to the air blowing head.

[0014] Specifically, when the first test air path is open, the second test air path is closed, and the first test air path blows air into the air hole through the air blowing head to detect the change in air flow rate of the air hole; when the second test air path is open, the first test air path is closed, and the second test air path blows air into the air hole through the air blowing head to detect the air tightness of the air hole.

[0015] According to some embodiments of the present invention, the first test air path is provided with an airtightness detection device, a first control valve and a leaking component, wherein the leaking component is disposed in the air path between the airtightness detection device and the three-way valve; wherein the leaking component is provided with a leak-connecting hole, and when the first control valve is opened, the airtightness detection device is used to detect the leakage of the leak-connecting hole in order to determine the airtightness of the air hole.

[0016] According to some embodiments of the present invention, the first test air circuit is further provided with a digital display and a pressure regulating valve connected together. The digital display is connected to the air tightness testing device. One end of the pressure regulating valve is connected to the air inlet pipe of the air tightness testing device, and the other end is connected to the air passage between the air tightness testing device and the digital display.

[0017] According to some embodiments of the present invention, the second test air path is provided with a second control valve and an airflow detection device. When the second control valve is opened, the airflow detection device is used to detect the change in airflow of the air hole.

[0018] According to some embodiments of the present invention, the porosity detection device further includes a conveying mechanism and a barcode scanning device disposed on the machine base. The conveying mechanism includes a first conveying module, a second conveying module, and a carrier. The first conveying module is disposed on the machine base and is used to provide driving force in a first direction. The second conveying module is connected to the driving part of the first conveying module and is used to provide driving force in a second direction. The carrier is disposed on the driving part of the second conveying module and is used to carry the product. The barcode scanning device is disposed on the machine base, and the barcode scanning device and the testing device are located on the conveying path of the first conveying module.

[0019] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: When detecting the airflow rate of the product's pores, the driving component drives the mounting base to move towards the product. Since the working end of the sealing head is set higher than the working end of the blowing head, the blowing head is connected to one end of the pore, and the sealing head 232 is separated from the pore. At this time, the air circuit device can detect the blockage of the pore through the blowing head. If the driving component drives the mounting base to continue moving towards the product, the blowing head is connected to one end of the pore, and the working end of the sealing head acts on the other end of the pore to seal that end. At this time, the air circuit device performs an airtightness test on the product's pores through the blowing head. Therefore, in determining whether the product's pores are of acceptable quality, not only can the airtightness of the pores be determined, but also the blockage status of the pores can be determined, thereby selecting products of better quality to ensure the product's application effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the porosity detection device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the airflow direction structure in the pore detection device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the pneumatic circuit device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the testing device and conveying mechanism according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the detection device according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the detection component according to an embodiment of the present invention.

[0026] The meanings of the reference numerals in the attached figures are as follows:

[0027] 100. Machine base; 200. Testing device; 210. Mounting bracket; 220. Drive component; 221. First drive component; 222. Second drive component; 230. Detection assembly; 231. Mounting base; 232. Sealing head; 233. Air blowing head; 234. First pressure sensor; 235. Second pressure sensor; 240. First elastic element; 250. Second elastic element; 300. Air circuit device; 310. First test air circuit; 311. Air tightness test Device; 312, First control valve; 313, Leakage component; 314, Digital display; 315, Pressure regulating valve; 316, Multi-way valve; 317, Second pneumatic triplet; 320, Second test air path; 321, Second control valve; 322, Airflow detection device; 330, Three-way valve; 340, First pneumatic triplet; 400, Conveying mechanism; 410, First conveying module; 420, Second conveying module; 430, Carrier; 500, Barcode scanning device. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, up, down, etc., indicating the directional or positional relationship, are based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings.

[0034] Please see Figures 1 to 3 This invention provides a pore detection device for detecting pores in products. The pore detection device includes a machine base 100, a testing device 200, and an air path device 300. The testing device 200 includes a mounting frame 210, a driving component 220, and a detection assembly 230. The mounting frame 210 is disposed on the machine base 100, and the driving component 220 is disposed on the mounting frame 210. The detection assembly 230 includes a mounting base 231, a sealing head 232, and an air blowing head 233. Mounting base 231 is connected to driving member 220. Sealing head 232 and air blowing head 233 are arranged side by side on mounting base 231. Driving member 220 is used to drive mounting base 231 to move toward the product, so that air blowing head 233 acts on one end of air hole or sealing head 232 and air blowing head 233 act on both ends of air hole respectively. Air passage device 300 is connected to air blowing head 233 and is used to test the quality of air hole through air blowing head 233.

[0035] Specifically, when detecting the airflow rate of the product's pores, the driving component 220 drives the air blowing head 233 on the mounting base 231 to move towards the product. The air blowing head 233 is aligned with one end of the pore, and the sealing head 232 is separated from the pore. At this time, the air circuit device 300 can blow air into the pore through the air blowing head 233 to detect the blockage of the pore. If the driving component 220 drives the sealing head 232 on the mounting base 231 to move towards the product, the air blowing head 233 is aligned with one end of the pore, and the sealing head 232 acts on the other end of the pore to seal it. At this time, the air circuit device 300 blows air into the pore through the air blowing head 233 to test the air tightness of the product's pores. As can be seen from the above, in determining whether the product's pores are of acceptable quality, not only the air tightness of the pores can be determined, but also the blockage of the pores can be determined, thereby selecting products of better quality to ensure the product's application effect.

[0036] In some embodiments, the drive member 220 includes a first drive member 221 and a second drive member 222. The first drive member 221 is connected to the mounting bracket 210 and is used to provide a downward driving force. The second drive member 222 is connected to the drive portion of the first drive member 221 and is used to provide a downward driving force. The mounting base 231 is connected to the second drive member 222. Thus, the first drive member 221 and the second drive member 222 cooperate to drive the mounting base 231 to move downward, thereby driving the air blowing head 233 and the sealing head 232 to move downward.

[0037] In this configuration, one of the first driving member 221 and the second driving member 222 drives the air blowing head 233 to act on one end of the air hole. For example, the first driving member 221 drives the mounting base 231 to move downwards, and the second driving member 222 does not provide driving force. The working end of the air blowing head 233 acts on one end of the air hole to connect with that end. Alternatively, the first driving member 221 and the second driving member simultaneously drive the mounting base 231 to move, so that the sealing head 232 and the air blowing head 233 respectively act on one end of the air hole. For example, firstly, the first driving member 221 drives the air blowing head 233 to connect with one end of the air hole, and then the second driving member 222 drives the sealing head 232 to seal the other end of the air hole.

[0038] In one specific application, when it is necessary to detect the blockage of the air vent, the first driving member 221 drives the mounting base 231 to move downward, and the second driving member 222 does not provide driving force. The working end of the air blowing head 233 acts on one end of the air vent to connect with it. At this time, the air blowing head 233 can detect the blockage of the air vent. When it is necessary to detect the airtightness of the air vent, the first driving member 221 and the second driving member 222 simultaneously drive the mounting base 231 to move downward. At this time, the working end of the air blowing head 233 acts on one end of the air vent, and the working end of the sealing head 232 acts on the other end of the air vent. At this time, the air blowing head 233 can detect the airtightness of the air vent.

[0039] In some embodiments, both the sealing head 232 and the air blowing head 233 are elastically and movably mounted on the mounting base 231. A first pressure sensor 234 is provided between the mounting base 231 and the sealing head 232 to detect the force exerted by the air blowing head 233 on the product; a second pressure sensor 235 is provided between the mounting base 231 and the air blowing head 233 to detect the force exerted by the air blowing head 233 on the product. Specifically, the sealing head 232 and the air blowing head 233 need to be pressure calibrated before application. The pressure read by the second pressure sensor 235 and the first pressure sensor 234 during the pressing process, including the weight of the pressure block, is not the actual pressure. Pressure calibration is required before product manufacturing. For example, if the pressure sensor reads a pressure value of 12N during calibration, while the calibration pressure sensor reads a pressure value of 10N, then 2N of the workpiece weight is present in the pressure head. During testing, the calibration pressure of 10N is taken as the actual pressure value. In other words, the pressure values ​​measured by the first pressure sensor 234 and the second pressure sensor 235 need to be reduced by 2N of their own weight to obtain the true pressure values ​​of the sealing head 232.

[0040] Furthermore, the sealing head 232 is provided with an extension arm inclined toward the air blowing head 233. The extension end of the extension arm is the working end of the sealing head 232, which acts on one end of the air hole to seal that end. It can be understood that, through the extension arm, the distance between the working end of the sealing head 232 and the working end of the air blowing head 233 is small. This allows the extension arm to act on the other end of the air hole while the working end of the air blowing head 233 acts on one end, enabling the air hole's airtightness test.

[0041] Furthermore, the working end of the air blowing head 233 is provided with a first elastic element 240, which has a through hole. The working end of the air blowing head 233 is held against the product through the first elastic element 240, and the air blowing head 233 is connected to one end of the air hole through the through hole of the first elastic element 240, thereby ensuring a sealed connection between the air blowing head 233 and the air hole. The working end of the sealing head 232 is provided with a second elastic element 250, which can seal the other end of the air hole.

[0042] In some embodiments, the air circuit device 300 includes a first test air circuit 310, a second test air circuit 320, and a three-way valve 330. The first test air circuit 310 is connected to the first end of the three-way valve 330, the second test air circuit 320 is connected to the second end of the three-way valve 330, and the third end of the three-way valve 330 is connected to the air blowing head 233. When the first test air circuit 310 is in the open state, the second test air circuit 320 is in the closed state, and the first test air circuit 310 is used to detect the change in airflow of the air hole through the air blowing head 233. When the second test air circuit 320 is in the open state, the first test air circuit 310 is in the closed state, and the second test air circuit 320 is used to detect the airtightness of the air hole through the air blowing head 233.

[0043] In some embodiments, please refer to Figures 4 to 6 The testing device 200 includes a mounting frame 210, a drive component 220, and a detection assembly 230. The mounting frame 210 is disposed on the machine base 100. The drive component 220 includes a first drive component 221 and a second drive component 222. The first drive component 221 is connected to the mounting frame 210, and the second drive component 222 is connected to the first drive component 221. The first drive component 221 and the second drive component 222 provide a downward driving force. The detection assembly 230 includes a mounting base 231, a sealing head 232, and an air blowing head 233. The mounting base 231 is connected to the second drive component 222. The sealing head 232 and the air blowing head 233 are arranged side-by-side on the mounting base 231, respectively acting on both ends of an air hole.

[0044] In one application, when the second test air path 320 needs to test the airflow rate of the vent, the first drive member 221 drives the detection component 230 to move downwards, the blowing head 233 presses against one end of the vent downwards, and the sealing head 232 is separated from the other end of the vent. Thus, the second test air path 320 can test the airflow rate of the vent. When the first test air path 310 needs to test the airtightness of the vent, the first drive member 221 and the second drive member 222 cooperate to drive the detection component 230 to move downwards, the blowing head 233 presses against one end of the vent downwards, and the sealing head 232 presses against the other end of the vent downwards. Thus, the blowing head 233 can test the airtightness of the vent.

[0045] In some embodiments, a first pressure sensor 234 is provided between the mounting base 231 and the sealing head 232, and a second pressure sensor 235 is provided between the mounting base 231 and the air blowing head 233. Specifically, pressure calibration is performed before testing. The pressure read by the second pressure sensor 235 and the first pressure sensor 234 during the pressing process, including the weight of the pressure block, is not the actual pressure. Pressure calibration is required before product manufacturing. For example, if the pressure sensor reads a pressure value of 12N during calibration, while the calibration pressure sensor reads a pressure value of 10N, then 2N of the workpiece weight is due to the pressure block. When manufacturing, the calibration pressure of 10N is used as the actual pressure value.

[0046] In some embodiments, please refer to Figures 2 to 3 Along the air supply direction of the first test air path 310, the first test air path 310 is sequentially equipped with an airtightness detection device 311, a first control valve 312, and a leak-proof component 313. That is, the leak-proof component 313 is located in the air path between the airtightness detection device 311 and the three-way valve 330, and the first control valve 312 is located in the air path between the airtightness detection device 311 and the leak-proof component 313. The leak-proof component 313 is provided with a leak-connecting hole. When the first control valve 312 is opened, the airtightness detection device 311 is used to detect the leakage of the leak-connecting hole to determine the airtightness of the air hole.

[0047] The airtightness testing device 311 can employ an airtightness detector. First, compressed air is injected into the test sample to bring its internal pressure to a set value. Then, the pressure change between the test sample and a leak-free standard sample is measured. If the test sample leaks, its internal pressure will change. The instrument detects this pressure change to determine whether there is a leak and the extent of the leak.

[0048] Furthermore, the first control valve 312 can be a solenoid valve. In airtightness testing, different objects may require different testing pressures. The solenoid valve can adjust the pressure to a suitable value according to specific requirements, ensuring the accuracy of the test results. The solenoid valve can control the gas flow rate, allowing an appropriate amount of gas to enter the object being tested. If the flow rate is too high, it may cause the internal pressure of the object to become too high instantaneously, affecting the test results; if the flow rate is too low, the test time will be too long. By reasonably controlling the flow rate through the solenoid valve of the airtightness tester, the testing process can be made more stable and efficient. For example, when testing some small seals, a small gas flow rate is required to accurately detect their leakage, and the solenoid valve can play a role in precisely controlling the flow rate.

[0049] In the specific testing process, during the pre-testing stage, before the formal testing, the entire testing system is pre-tested to check whether the equipment is working properly and whether the connections are good. The gas source is turned on, and the gas pressure and flow rate are adjusted to meet the working requirements of the porosity testing equipment. Then, the porosity testing equipment is started, and the various parameters of the equipment, such as pressure and flow rate displays, are observed to ensure they are within normal ranges. If any abnormalities are found, the fault should be investigated and repaired promptly. During the pressurization stage, pressurization is carried out, and the pressure of the gas source is slowly adjusted to reach the specified testing pressure. During the pressurization process, the pressure changes on the porosity testing equipment should be closely monitored to ensure a smooth pressure rise without abnormal fluctuations. Generally, the testing pressure should be determined according to the design working pressure and relevant standards, typically 1.1 to 1.5 times the working pressure of the airtightness tester, but it must not exceed the maximum withstand pressure. During the pressure stabilization stage, after pressurization, the pressure is maintained for a period of time to allow the internal gas to fully permeate and balance. This process generally requires 15 minutes, with the specific time depending on the structure and size of the airtightness tester. During the pressure stabilization phase, carefully observe whether there is a significant drop in pressure on the pore detection equipment. If the pressure drops too quickly, it indicates a potential large leak, requiring immediate investigation and resolution. After pressure stabilization, formal testing begins. Use the pore detection equipment to inspect around the leak points. The equipment will display the corresponding leakage rate or leakage signal based on the leak situation. If a helium mass spectrometer leak detector is used, it determines the leakage rate by detecting the amount of helium leaked; if an airtightness tester is used, it calculates the leakage rate based on pressure or flow rate changes. During the testing process, conduct a comprehensive inspection of all parts according to a specific order and method, paying particular attention to areas prone to leaks such as near leak points, sealing interfaces, and welds, ensuring that no potential leak points are overlooked.

[0050] In some embodiments, please refer to Figures 2 to 3 The first test air circuit 310 is also equipped with a digital display 314 and a pressure regulating valve 315 connected to each other. The digital display 314 is connected to the air tightness testing device 311. One end of the pressure regulating valve 315 is connected to the air inlet pipe of the air tightness testing device 311, and the other end is connected to the air passage between the air tightness testing device 311 and the digital display 314. Specifically, the first test air circuit 310 is also equipped with a second pneumatic triplet 317 and a multi-way valve 316. The first end of the multi-way valve 316 is connected to an external air source, the second end of the multi-way valve 316 is connected to the air tightness testing device 311, and the third end of the multi-way valve 316 is connected to the pressure regulating valve 315. The first end of the second pneumatic triplet 317 is connected to the air tightness testing device 311, the second end of the second pneumatic triplet 317 is connected to the pressure regulating valve 315, and the third end of the second pneumatic triplet 317 is connected to the digital display 314.

[0051] Understandably, the digital display 314 is used to monitor pressure changes in real time and monitor the pressurization process: During the pressurization phase of the airtightness test, the digital display 314 can display the internal pressure value in real time. Operators can control the pressurization speed based on the readings of the digital display 314 to ensure a smooth pressure rise and avoid affecting the accuracy of the test results due to excessively fast or slow pressurization. For example, if the digital display 314 shows a slow pressure rise, it may indicate insufficient air supply or blockage in the connecting pipes; if the pressure rises too quickly, it may lead to excessive pressure and even damage. Pressure Stabilization Observation: During the pressure stabilization phase after pressurization, the digital display 314 continuously displays the pressure value. Operators can observe the digital display 314 to determine whether the pressure is stable within the specified range. If the pressure drops significantly, it indicates a possible leak, requiring immediate location and handling of the leak. The precise display of the digital display 314 helps detect minute pressure changes and improves the sensitivity of the test. Testing Phase Tracking: During the formal testing phase, the digital display 314 provides real-time feedback on the internal pressure. Even the smallest pressure fluctuations can be accurately displayed by the digital gauge 314, which is crucial for assessing airtightness. Because some minute leaks may only cause slight pressure changes, they are easily overlooked without the precise monitoring of the digital gauge 314, leading to inaccurate test results.

[0052] Precise Leakage Rate Reading: Calculation Basis: In airtightness testing, pressure change data is read using a digital display 314. Combined with parameters such as testing time and volume, the leakage rate can be accurately calculated. The accurate pressure value provided by the digital display 314 is the key basis for calculating the leakage rate, and its accuracy directly affects the accuracy of the calculation. For example, when calculating the leakage rate using the formula Q = V × ΔP / Δt (where Q is the leakage rate, V is the volume, ΔP is the pressure change value, and Δt is the time change value), the precise ΔP and Δt data displayed by the digital display 314 ensure the reliability of the calculation results. Comparison with Standards: The leakage rate data displayed by the digital display 314 can be directly compared with preset acceptance standards, allowing operators to quickly determine whether the airtightness performance meets the requirements. If the leakage rate exceeds the standard value, it indicates an airtightness problem, requiring further inspection and repair; if the leakage rate is within the allowable range, it indicates good airtightness. This precise numerical comparison provides a strong basis for product quality judgment.

[0053] In some embodiments, please refer to Figures 2 to 3 The second test air path 320 is equipped with a second control valve 321 and an airflow detection device 322. The airflow detection device 322 is connected to a multi-way valve 316. The second control valve 321 is connected to the pipeline between the three-way valve 330 and the airflow detection device 322. When the second control valve 321 is opened, the airflow detection device 322 is used to detect the change in airflow of the air hole.

[0054] The second control valve 321 can be a fluid control valve. A fluid control valve can precisely adjust the airflow rate according to actual needs. By changing the valve opening, the cross-sectional area through which the airflow passes can be accurately controlled, thereby achieving fine-tuning of the flow rate and meeting the flow accuracy requirements of different application scenarios. For example, in some experiments requiring precise gas flow, the fluid control valve can control the flow rate within a very small error range, ensuring the accuracy of the experimental results.

[0055] Furthermore, the airflow detection device 322 may employ a flow detection module or other detection modules.

[0056] In a specific application, flow detection modules typically employ differential pressure flow detection. The specific detection process is as follows: **Pressure Difference Generation:** When airflow passes through the flow detection module of the airtightness detector, the throttling device within the module creates a pressure difference at different locations. For example, upstream and downstream of the throttling device, variations in airflow velocity and cross-sectional area create different pressure zones. According to Bernoulli's theorem and the principle of fluid continuity, in a steady flow, pressure is lower where the flow velocity is higher and higher where the flow velocity is lower. Therefore, when airflow passes through the throttling device, the velocity increases and the pressure decreases, thus creating a pressure difference between the upstream and downstream of the throttling device. **Pressure Difference Measurement:** The flow detection module is equipped with high-precision pressure sensors to measure the pressure difference between the upstream and downstream of the throttling device. These pressure sensors convert the pressure signal into an electrical signal for subsequent processing and analysis. **Flow Rate Calculation:** Based on the measured pressure difference and known throttling device parameters, gas characteristics, and other information, the airflow rate is calculated using a specific formula. Generally, flow rate is proportional to the square root of the pressure difference. By accurately measuring the pressure difference and combining it with relevant calibration coefficients and gas parameters, the flow rate can be accurately calculated.

[0057] In some embodiments, please refer to Figures 2 to 3 The circuit device also includes a first pneumatic triplet 340, which is connected to the first test air passage 310 and the second test air passage 320, and is also connected to an external air source. Specifically, the first end of the first pneumatic triplet 340 is connected to the external air source, the second end of the first pneumatic triplet 340 is connected to the first test air passage 310, and the third end of the first pneumatic triplet 340 is connected to the second test air passage 320.

[0058] In practical applications, when the first control valve 312 of the first test air passage 310 is closed, the second control valve 321 of the second test air passage 320 is opened. At this time, an external air source supplies air to the second test air passage 320 through the first pneumatic triplet 340, enabling the second test air passage 320 to detect the airflow rate of the air orifice. When the second control valve 321 of the second test air passage 320 is closed, the first control valve 312 of the first test air passage 310 is opened. At this time, an external air source supplies air to the first test air passage 310 through the first pneumatic triplet 340, enabling the first test air passage 310 to detect the airflow rate of the air orifice.

[0059] Understandably, firstly, pneumatic triplet units can improve air quality: air filters effectively remove dust, impurities, moisture, and other contaminants from compressed air, providing clean and dry air for the pneumatic system. This prevents impurities from entering pneumatic components, reducing wear, blockage, and corrosion, extending component lifespan, and ensuring stable system operation. For example, in some electronic manufacturing workshops with high environmental requirements, pneumatic triplet units can ensure that pneumatic equipment is not affected by impurities in the air, avoiding product quality problems. Secondly, they stabilize pressure output: pressure reducing valves can regulate the input compressed air pressure to the required stable value, unaffected by fluctuations in air source pressure and changes in air consumption. Stable pressure allows pneumatic actuators such as cylinders and pneumatic motors to operate more smoothly, with more uniform output force and speed, improving the precision and quality of the production process.

[0060] In some embodiments, please refer to Figures 3 to 4 The porosity detection equipment also includes a conveying mechanism 400, which comprises a first conveying module 410, a second conveying module 420, and a carrier 430. The first conveying module 410 is disposed on the machine base 100 along a first horizontal direction and provides driving force in that direction. The second conveying module 420 is connected to the driving section of the first conveying module 410 along a second horizontal direction and provides driving force in that direction. The carrier 430 is disposed on the driving section of the second conveying module 420 and is used to carry the product; the first and second directions are perpendicular to each other. The porosity detection equipment also includes a barcode scanner 500, which is disposed on the machine base 100 and used to identify product markings. The barcode scanner 500 and the testing device 200 are located on adjacent sides of the first conveying module 410.

[0061] In practical applications, when loading and unloading are required on the carrier 430, the first conveyor mechanism 400 and the second conveyor mechanism 400 cooperate to transport the carrier 430 to a position away from the barcode scanner 500 and the testing device 200. This facilitates the removal of inspected products from the carrier 430 and the placement of products to be tested. Then, the first conveyor mechanism 400 transports the second conveyor mechanism 400 below the barcode scanner 500 and the testing device 200. At this point, the second conveyor mechanism 400 transports the carrier 430 below the barcode scanner 500, which identifies and records the markings on the products to be tested. After product barcode scanning is completed, the second conveyor mechanism 400 transports the carrier 430 below the testing device 200, allowing for convenient testing of the products on the carrier 430.

[0062] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A porosity detection device, characterized in that, For detecting pores in a product; the pore detection device includes: Machine tool; The testing device includes a mounting frame, a driving component, and a testing assembly. The mounting frame is disposed on the machine base, and the driving component is disposed on the mounting frame. The testing assembly includes a mounting base, a sealing head, and an air blowing head. The mounting base is connected to the driving component. The sealing head and the air blowing head are disposed side by side on the mounting base. The driving component is used to drive the mounting base to move toward the product, so as to allow the air blowing head to act on one end of the air hole or the sealing head and the air blowing head to act on both ends of the air hole respectively. An air path device, connected to the air blowing head, is used to blow air into the air hole through the air blowing head to test the quality of the air hole.

2. The porosity detection device according to claim 1, characterized in that, The driving component includes a first driving component and a second driving component. The first driving component is connected to the mounting bracket, the second driving component is connected to the first driving component, and the mounting base is connected to the second driving component. Wherein, one of the first driving member and the second driving member is used to drive the air blowing head to act on one end of the air hole; the first driving member and the second driving member simultaneously drive the mounting base to move, so that the sealing head and the air blowing head act on one end of the air hole respectively.

3. The porosity detection device according to claim 1, characterized in that, A first pressure sensor is provided between the mounting base and the sealing head to detect the force exerted by the air blowing head on the product; a second pressure sensor is provided between the mounting base and the air blowing head to detect the force exerted by the air blowing head on the product.

4. The porosity detection device according to claim 1, characterized in that, The sealing head is provided with an extension arm that is inclined toward the air blowing head, and the extension end of the extension arm is used to act on one end of the air hole.

5. The porosity detection device according to claim 1, characterized in that, The working end of the air blowing head is provided with a first elastic element, and the working end of the sealing head is provided with a second elastic element.

6. The porosity detection device according to claim 1, characterized in that, The air circuit device includes a first test air circuit, a second test air circuit, and a three-way valve, wherein the first test air circuit is connected to the first end of the three-way valve, the second test air circuit is connected to the second end of the three-way valve, and the third end of the three-way valve is connected to the air blowing head. Specifically, when the first test air path is open, the second test air path is closed, and the first test air path blows air into the air hole through the air blowing head to detect the change in air flow rate of the air hole; when the second test air path is open, the first test air path is closed, and the second test air path blows air into the air hole through the air blowing head to detect the air tightness of the air hole.

7. The porosity detection device according to claim 6, characterized in that, The first test air path is equipped with an air tightness detection device, a first control valve, and a leaking component. The leaking component is located in the air path between the air tightness detection device and the three-way valve. The leaking component has a leak-connecting hole. When the first control valve is opened, the air tightness detection device is used to detect the leakage of the leak-connecting hole to determine the air tightness of the air hole.

8. The porosity detection device according to claim 7, characterized in that, The first test air circuit is also equipped with a digital display and a pressure regulating valve connected to each other. The digital display is connected to the air tightness testing device. One end of the pressure regulating valve is connected to the air inlet pipe of the air tightness testing device, and the other end is connected to the air passage between the air tightness testing device and the digital display.

9. The porosity detection device according to claim 6, characterized in that, The second test air path is equipped with a second control valve and an airflow detection device. When the second control valve is opened, the airflow detection device is used to detect the change in airflow at the air hole.

10. The porosity detection device according to claim 1, characterized in that, The porosity detection equipment further includes a conveying mechanism and a barcode scanning device disposed on the machine base. The conveying mechanism includes a first conveying module, a second conveying module, and a carrier. The first conveying module is disposed on the machine base and is used to provide driving force in a first direction. The second conveying module is connected to the driving part of the first conveying module and is used to provide driving force in a second direction. The carrier is disposed on the driving part of the second conveying module and is used to carry the product. The barcode scanning device is disposed on the machine base, and the barcode scanning device and the testing device are located on the conveying path of the first conveying module.

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