Novel air suspension valve core detection equipment

Abstract

The utility model relates to novel air suspension valve core detection equipment which comprises an air tightness test lower cavity, an air tightness test upper cavity and an air tightness tester, and the air tightness test lower cavity and the air tightness test upper cavity are matched to form a detection cavity for accommodating a detection product. A high-pressure gas needle matched with a gas inlet of a detected product is arranged in the upper gas tightness testing cavity, and the gas tightness tester fills the detection cavity with gas and detects gas pressure changes regularly. The inside of a detected product is inflated through the high-pressure gas needle, the detection cavity is filled with trace gas through the gas tightness tester and the gas pressure is monitored, the gas inside the product is leaked to the outside through the gas pressure difference between the inside and the outside of the product, the conventional leakage from outside to inside is converted into leakage from inside to outside, the volume of the detection cavity is reduced, and the detection efficiency is improved. High test precision and stability are achieved, and various detection products are detected by arranging different types of air tightness test upper cavities and matched air tightness test lower cavities, so that the problem of incompatibility of detection equipment is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of product testing, and specifically relates to a novel air suspension valve core detection device. Background Art

[0002] At present, all existing air suspension testing equipment in the world are special equipment, which can only detect single products. In an environment where multiple products need to be produced, different models need to be purchased additionally, resulting in high production costs.

[0003] In the field of airtightness detection, the commonly used product testing method is the differential pressure drop method, which is widely used in fields such as 3C and automobiles. The differential pressure drop method injects detection gas into the detection cavity. When the detection gas leaks into the product, the detection gas in the cavity generates a pressure change and is captured by the airtightness leak detector. Therefore, the cavity must contain the product, making it difficult to streamline the volume of the cavity. Moreover, when the relative volume of the product is small, the larger cavity volume makes it more difficult for the airtightness leak detector to detect tiny leaks, resulting in a significant decrease in the accuracy and stability of the equipment.

[0004] Therefore, how to improve the incompatibility of existing air suspension detection equipment and reduce the volume of the test cavity to achieve higher test accuracy and stability has become an urgent problem to be solved. Content of the Utility Model

[0005] 1. Technical Problems to be Solved by the Utility Model

[0006] The purpose of the utility model is to solve the problems of incompatibility of existing air suspension detection equipment and difficulty in streamlining the volume of the test cavity.

[0007] 2. Technical Solutions

[0008] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0009] A novel air suspension valve core detection device of the utility model includes an airtightness test lower cavity, an airtightness test upper cavity and an airtightness tester. The airtightness test lower cavity and the airtightness test upper cavity are adapted to form a detection cavity to accommodate the detection product. The airtightness test upper cavity is provided with a high-pressure air needle that cooperates with the air inlet of the detection product. The airtightness tester fills the detection cavity with gas and regularly detects the pressure change.

[0010] Preferably, it further includes a manual loading and unloading lower cavity component and a servo press sealed upper cavity component. The servo press sealed upper cavity component includes a servo press, a cavity conversion rodless cylinder, and airtightness test upper cavities of different models. The lower end of the servo press is movably connected to the airtightness test upper cavity, and the cavity conversion rodless cylinder drives the servo press to replace the airtightness test upper cavity. The manual loading and unloading lower cavity component includes an airtightness test lower cavity adapted to the airtightness test upper cavity.

[0011] Preferably, the servo press sealed upper cavity component further includes a stripping pin for separating the detected product from the high-pressure air needle.

[0012] Preferably, it further includes a test gas circuit central air circuit board component. The test gas circuit central air circuit board component includes a high-pressure pressure regulating valve, a high-pressure gas filter, an emergency gas cut-off circuit, and a central control valve board connected in sequence by a gas pipeline. The central control valve board branches out gas pipelines to be respectively connected to a sub-control valve board and a low-pressure air source component. The gas pipeline where the sub-control valve board is located is connected to the high-pressure air needle.

[0013] Preferably, a branch pipeline is provided in the gas pipeline between the emergency gas cut-off circuit and the central control valve board to connect to a soft start circuit.

[0014] Preferably, the airtightness tester is connected to an industrial control computer and a test curve display screen, and the test curve display screen is connected to the industrial control computer.

[0015] Preferably, the manual loading and unloading lower cavity component includes a loading and unloading cylinder for fastening and pushing out the airtightness test lower cavity.

[0016] Preferably, the manual loading and unloading lower cavity component further includes a reflective photoelectric sensor and a barcode reader.

[0017] Preferably, the industrial control computer is connected to a control touch screen and a barcode reader.

[0018] Preferably, the industrial control computer is respectively connected to the servo press and the airtightness test upper cavity.

[0019] 3. Beneficial effects

[0020] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0021] A new type of air suspension valve core detection device of the present utility model includes an airtightness test lower cavity, an airtightness test upper cavity, and an airtightness tester. The airtightness test lower cavity and the airtightness test upper cavity are adapted to form a detection cavity to accommodate the detection product. The airtightness test upper cavity is provided with a high-pressure air needle that cooperates with the air inlet of the detection product. The airtightness tester fills the detection cavity with gas and regularly detects the air pressure change. The servo press sealing upper cavity assembly includes airtightness test upper cavities of different models, and the manual loading and unloading lower cavity assembly includes an airtightness test lower cavity that is adapted. By filling the detection product with gas through the high-pressure air needle, the airtightness tester fills the detection cavity with a small amount of gas and monitors the air pressure change. Through the air pressure difference between the inside of the product and the outside detection cavity, the detection gas inside the product leaks to the outside detection cavity, changing from the conventional outward-to-inward leakage to inward-to-outward leakage, realizing a new differential pressure rise method, reducing the volume of the stamping gas accommodated in the original detection cavity, reducing the volume of the detection cavity, so as to achieve higher test accuracy and stability. By setting airtightness test upper cavities of different models and the corresponding airtightness test lower cavity to detect a variety of detection products, the incompatibility of the detection equipment is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic structural diagram of a new type of air suspension valve core detection device of the present utility model Figure 1 ;

[0023] Figure 2 FIG. is a schematic structural diagram of a new type of air suspension valve core detection device of the present utility model Figure 2 ;

[0024] Figure 3 FIG. is a schematic structural diagram of the manual loading and unloading lower cavity assembly of the present utility model;

[0025] Figure 4 FIG. is a schematic structural diagram of the servo press sealing upper cavity assembly of the present utility model;

[0026] Figure 5 FIG. is a schematic sectional view of the airtightness test upper cavity of the present utility model;

[0027] Figure 6 FIG. is a schematic structural diagram of the air control circuit board assembly in the test gas circuit of the present utility model;

[0028] Figure 7 FIG. is a test gas circuit diagram of the present utility model.

[0029] Explanation of the reference numerals in the schematic diagrams:

[0030] 100. Manual loading and unloading lower cavity assembly; 110. Loading and unloading cylinder; 120. Lower cavity for airtightness test; 130. Linear guide rail; 140. Product positioning part; 150. Reflective photoelectric sensor; 160. Code reader;

[0031] 200. Servo press sealed upper cavity assembly; 210. Servo press; 220. Rodless cylinder for cavity changeover; 230. Upper cavity for airtightness test; 231. High-pressure air needle; 232. Unloading needle;

[0032] 300. Test curve display screen; 400. Control touch screen; 500. Fan; 600. Pressure curve display screen; 700. Industrial control computer;

[0033] 800. Central control air circuit board assembly for test air circuit; 810. High-pressure pressure regulating valve; 820. High-pressure gas filter; 830. Emergency air cut-off circuit; 840. Soft start circuit; 850. Central control valve plate; 860. Sub-control valve plate; 870. Low-pressure air source assembly;

[0034] 900. Airtightness tester; 1000. Equipment electrical cabinet. Detailed implementation manners

[0035] In order to enable those skilled in the art of this technology to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of this application described here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0037] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0038] Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0039] In addition, the terms "install", "set", "provided with", "connect", "connected", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can also be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] It should be noted that, without conflict, the embodiments and features in the embodiments of this application can be combined with each other. The following will refer to the drawings and combine with embodiments to detail this application.

[0041] Embodiment 1

[0042] Referring to the attached Figures 1-7 , a new type of air suspension valve core detection device for this embodiment includes a manual loading and unloading lower cavity assembly 100, a servo press sealing upper cavity assembly 200, a test curve display screen 300, a control touch screen 400, a fan 500, a pressure curve display screen 600, an industrial control computer 700, a test gas circuit central air control board assembly 800, an airtightness tester 900, and an equipment electric cabinet 1000.

[0043] The manual loading and unloading lower cavity assembly 100 includes an airtightness test lower cavity 120, and the servo press sealing upper cavity assembly 200 includes an airtightness test upper cavity 230. The airtightness test lower cavity 120 and the airtightness test upper cavity 230 are adapted to form a detection cavity to accommodate the detection product.

[0044] The servo press sealing upper cavity assembly 200 includes a servo press 210, a cavity conversion rodless cylinder 220, and airtightness test upper cavities 230 of different models. The lower end of the servo press 210 is movably connected to the airtightness test upper cavity 230. The cavity conversion rodless cylinder 220 drives the servo press 210 to replace the airtightness test upper cavity 230. The manual loading and unloading lower cavity assembly 100 includes an airtightness test lower cavity 120 adapted to the airtightness test upper cavity 230. When the cavity conversion rodless cylinder 220 drives the servo press 210 to replace the airtightness test upper cavity 230 that meets the requirements of the product to be detected, the operator replaces the airtightness test lower cavity 120 that matches the airtightness test upper cavity 230. The servo press 210 drives the airtightness test upper cavity 230 and the airtightness test lower cavity 120 to form a detection cavity for accommodating and matching the product to be detected.

[0045] The airtightness test lower cavity 120 is provided with a high-pressure air needle 231 and a material ejection needle 232. During the process that the servo press 210 drives the airtightness test upper cavity 230 and the airtightness test lower cavity 120 to form a detection cavity, the high-pressure air needle 231 slowly inserts into the air inlet of the product to be detected under the action of a disc spring. When the servo press 210 moves to a specified position, the high-pressure air needle 231 and the sealing structure inside the product to be detected are closely attached to form a sealed cavity to be detected. Air is inflated into the product to be detected through the high-pressure air needle 231. The airtightness valve inside the product isolates the product from the external detection cavity, forming a sealed cavity, changing the original method of inflating the detection cavity without inflating the product inside, reducing the internal pressurized space of the original detection cavity, enabling the detection cavity volume to be reduced to accommodate the product to be detected, and making the detection cavity volume smaller, so that related instruments can better detect minute leaks, improving the accuracy and stability of the equipment.

[0046] After the test is completed, the servo press 210 drives the airtightness test upper cavity 230 to rise, and the material ejection needle 232 separates the product to be detected from the high-pressure air needle 231 under the action of a spring, so that the product to be detected is separated from the airtightness test upper cavity 230.

[0047] The servo press 210 is connected to the pressure curve display screen 600. The pressure curve display screen 600 is used to receive and display the pressure signal of the servo press 210, enabling the worker to observe the pressure of the servo press 210, so as to better control the pressure of the servo press 210 and maintain the airtightness of the detection cavity.

[0048] The control touch screen 400, the servo press 210, and the airtightness test upper cavity 230 are respectively connected to the industrial control computer 700. Workers input the detected product model into the industrial control computer 700 through the control touch screen 400. The industrial control computer 700 sends a signal to the cavity conversion rodless cylinder 220, and the cavity conversion rodless cylinder 220 drives the servo press 210 to switch to the airtightness test upper cavity 230 that meets the requirements, so that the detected product matches the detected cavity that meets the requirements.

[0049] The manual loading and unloading lower cavity assembly 100 further includes a product positioning part 140, a loading and unloading cylinder 110, a linear guide 130, a reflective photoelectric sensor 150, and a code reader 160. The code reader 160 and the reflective photoelectric sensor 150 are respectively connected to the industrial control computer 700 for transmitting signals. Workers place the detected product on the product positioning part 140. The reflective photoelectric sensor 150 detects that there is a detected product placed on the product positioning part 140 and transmits a signal to the industrial control computer 700. The industrial control computer 700 transmits a signal to the code reader 160. The code reader 160 reads the two-dimensional code on the detected product and transmits the read information to the industrial control computer 700. The industrial control computer 700 compares the received read information with the detected product model information input by the worker through the control touch screen 400. After successful comparison, the cavity conversion rodless cylinder 220 drives the servo press 210 to replace the airtightness test upper cavity 230 that matches the requirements of the detected product. The worker pushes the airtightness test lower cavity 120 adapted to the airtightness test upper cavity 230 to the working position through the linear guide 130. The loading and unloading cylinder 110 clamps the airtightness test lower cavity 120 carrying the detected product in the working position to complete the loading action. The manual loading and unloading lower cavity assembly 100 reads the information of the detected product through the reflective photoelectric sensor 150 and the code reader 160 and compares it with the product information displayed by the industrial control computer 700, so that the detection device selects the airtightness test upper cavity 230 that meets the requirements. The worker automatically replaces the airtightness test lower cavity 120, so that the detected product can be tested in accordance with the requirements.

[0050] The air control panel assembly 800 in the test gas circuit includes a high-pressure pressure regulating valve 810, a high-pressure gas filter 820, an emergency gas cut-off circuit 830, and a central control valve plate 850 that are sequentially connected by air pressure pipelines. The central control valve plate 850 branches out air pressure pipelines to connect to a sub-control valve plate 860 and a low-pressure gas source assembly 870 respectively. The gas pipeline where the sub-control valve plate 860 is located is connected to the high-pressure gas needle 231. A branch pipeline is provided in the gas pipeline between the emergency gas cut-off circuit 830 and the central control valve plate 850 to connect to a soft start circuit 840. The high-pressure pressure regulating valve 810 reduces the high-pressure detection gas from the factory to the air pressure that the detection equipment can accommodate. The high-pressure gas filter 820 filters the detection gas to prevent impurities contained in the detection gas from blocking the gas circuit. The soft start circuit 840 is used to accommodate the filtered detection gas. When the air pressure of the collected detection gas rises to the set value, the detection gas flows into the central control valve plate 850. After the detection gas is split by the central control valve plate 850, a part passes through the sub-control valve plate 860. The sub-control valve plate 860 controls the test gas to impact the detection product at different air pressures according to the set test steps. The low-pressure gas source assembly 870 provides gas source for the cylinders of the equipment. The emergency gas cut-off circuit 830 is used to quickly discharge the high-pressure gas in the equipment in case of an emergency, reducing the danger of the equipment.

[0051] The airtightness tester 900 is respectively connected to the industrial control computer 700 and the test curve display screen 300. The test curve display screen 300 is connected to the industrial control computer 700. The airtightness tester 900 pre-discharges a certain amount of air pressure into the detection cavity and then monitors the air pressure in the detection cavity in real time within the set test time, and feeds back the monitoring results to the test curve display screen 300 and the industrial control computer 700. After the test process is completely finished, the central control valve plate 850 and the sub-control valve plate 860 exhaust at the same time. At the same time, the industrial control computer 700 compares the set value and the captured value and feeds back the test result to the test curve display screen 300 to complete the test action. By comparing the pre-input qualified parameters with the parameters displayed on the test curve display screen 300, the products that meet the requirements are screened out.

[0052] The equipment electric cabinet 1000 is used to provide power for the detection equipment. The fan 500 is used to discharge the heat generated during the test outside the equipment to ensure the stability of the temperature during the detection process.

[0053] At the start of the detection, place the product to be detected on the product positioning part 140. Use the barcode reader 160 to read the QR code information attached to the product to be detected and input the information into the industrial control computer 700. The industrial control computer 700 compares the read information with the information of the product to be detected input by the worker through the control touch screen 400. After successful comparison, the cavity changeover rodless cylinder 220 drives the servo press 210 to replace the airtightness test upper cavity 230 that matches the requirements of the product to be detected. The worker pushes the airtightness test lower cavity 120 adapted to the airtightness test upper cavity 230 to the working position through the linear guide rail 130. The servo press 210 drives the airtightness test upper cavity 230 to press down to form a detection cavity with the airtightness test lower cavity 120. During the pressing process, the high-pressure air needle 231 slowly inserts into the air inlet of the product to be detected under the action of the disc spring. When the servo press 210 moves to the specified position, the high-pressure air needle 231 and the sealing structure inside the product to be detected are closely attached to form a sealed cavity for detection. Inflate the product to be detected through the high-pressure air needle 231. The sub-control valve plate 860 controls the test gas to impact the product to be detected at different air pressures according to the set test steps. The airtightness tester 900 pre-discharges a certain amount of air pressure into the detection cavity and then monitors the air pressure in the detection cavity in real time within the set test time, and feeds back the monitoring results to the test curve display screen 300 and the industrial control computer 700. After the test process is completely finished, the central control valve plate 850 and the sub-control valve plate 860 exhaust at the same time. At the same time, the industrial control computer 700 compares the set value and the captured value and feeds back the test result to the test curve display screen 300 to complete the test action. Compare the pre-input qualified parameters with the parameters displayed on the test curve display screen 300 to screen out the products that meet the requirements.

[0054] The above embodiments only represent a certain implementation manner of the present invention, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A new type of air suspension spool detection device, characterized in that: It includes a lower cavity (120) for airtightness testing, an upper cavity (230) for airtightness testing, and an airtightness tester (900). The lower cavity (120) for airtightness testing and the upper cavity (230) for airtightness testing are adapted to form a detection cavity to accommodate the product to be detected. The upper cavity (230) for airtightness testing is provided with a high-pressure air needle (231) that cooperates with the air inlet of the product to be detected. The airtightness tester (900) fills the detection cavity with gas and regularly detects the change in air pressure.

2. The novel air suspension spool valve detection device according to claim 1, characterized in that: It further includes a manual loading and unloading lower cavity assembly (100) and a servo press sealing upper cavity assembly (200). The servo press sealing upper cavity assembly (200) includes a servo press (210), a cavity conversion rodless cylinder (220), and upper cavities (230) for airtightness testing of different models. The lower end of the servo press (210) is movably connected to the upper cavity (230) for airtightness testing. The cavity conversion rodless cylinder (220) drives the servo press (210) to replace the upper cavity (230) for airtightness testing. The manual loading and unloading lower cavity assembly (100) includes a lower cavity (120) for airtightness testing that is adapted to the upper cavity (230) for airtightness testing.

3. A novel air suspension valve core detection device according to claim 2, characterized in that: The servo press sealing upper cavity assembly (200) further includes a blanking needle (232) that separates the product to be detected from the high-pressure air needle (231).

4. A novel air suspension spool valve detection device according to claim 3, characterized in that: It further includes a central air control panel assembly (800) for the test gas circuit. The central air control panel assembly (800) for the test gas circuit includes a high-pressure pressure regulating valve (810), a high-pressure gas filter (820), an emergency air cut-off circuit (830), and a central control valve plate (850) that are sequentially connected by air pressure pipelines. The central control valve plate (850) branches out air pressure pipelines and is respectively connected to a sub-control valve plate (860) and a low-pressure air source assembly (870). The gas pipeline where the sub-control valve plate (860) is located is connected to the high-pressure air needle (231).

5. A novel air suspension spool valve detection device according to claim 4, characterized in that: A branch pipeline is provided in the gas pipeline between the emergency air cut-off circuit (830) and the central control valve plate (850) and is connected to a soft start circuit (840).

6. The novel air suspension spool detection device according to claim 5, characterized in that: The airtightness tester (900) is connected to an industrial control computer (700) and a test curve display screen (300). The test curve display screen (300) is connected to the industrial control computer (700).

7. A novel air suspension valve core detection device according to claim 6, characterized in that: The manual loading and unloading lower cavity assembly (100) includes a loading and unloading cylinder (110) for fastening and pushing out the lower cavity (120) for airtightness testing.

8. A novel air suspension valve core detection device according to claim 7, characterized in that: The manual loading and unloading lower cavity assembly (100) further includes a reflective photoelectric sensor (150) and a code reader (160).

9. The novel air suspension valve core detection device according to claim 8, characterized in that: The industrial control computer (700) is connected to a control touch screen (400) and a code reader (160).

10. A novel air suspension spool valve detection device according to claim 9, characterized in that: The industrial control computer (700) is respectively connected to the servo press (210) and the upper cavity (230) for airtightness testing.

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