Air-tight jig and air-tight detection system

Abstract

The utility model relates to airtightness detection field especially relates to a kind of airtightness fixture and airtightness detection system.The airtightness fixture includes platform, airtight box, mounting seat, first driving part, piece rack and second driving part, the airtight box is fixed in the platform, with multiple workpiece interfaces and airtight cavity of intercommunication, the mounting seat has multiple installation sites, the installation site with the workpiece interface one-to-one correspondence, and relatively set, for installing the workpiece to be measured, the first driving part is driven connection with the mounting seat, for driving the workpiece to be measured inserts the workpiece interface, forms sealed cavity, the piece rack is located in the airtight box, with the workpiece interface corresponding arrangement, the second driving part is driven connection with the piece rack, for driving the workpiece to be measured exits the workpiece interface.The airtightness fixture provided by the utility model has high detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing, and in particular to an airtightness fixture and an airtightness testing system. Background Technology

[0002] Electrical connectors, also known as circuit connectors or electronic connectors, are devices that bridge two conductors, allowing current or signals to flow from one conductor to another. They are widely used in various electrical circuits. The connector terminals are key components of electrical connectors, providing a path for the transmission of electrical signals or current to achieve an electrical connection. Currently, many rubber-coated electrical connector terminals are required to have airtight performance, necessitating airtightness testing before leaving the factory. However, using existing airtightness testing systems requires testing each product individually, resulting in low testing efficiency. Utility Model Content

[0003] To address the technical problem of low detection efficiency in the aforementioned detection systems, this invention provides an airtight fixture and an airtight detection system capable of batch testing.

[0004] A first aspect of this utility model provides an airtight fixture, including a platform, an airtight box, a mounting base, a first driving component, a part ejector, and a second driving component. The airtight box is fixed to the platform and has multiple interconnected workpiece interfaces and airtight cavities. The mounting base has multiple mounting positions, each corresponding to a workpiece interface and arranged opposite to it, for mounting the workpiece to be tested. The first driving component is driven to the mounting base and is used to drive the workpiece to be tested into the workpiece interface to form a sealed cavity. The part ejector is disposed inside the airtight box and is arranged corresponding to the workpiece interface. The second driving component is driven to the part ejector and is used to drive the workpiece to be tested out of the workpiece interface.

[0005] In some embodiments, the mounting base includes a slider and a workpiece holder, the workpiece holder being detachably mounted to the slider, and the mounting position being located on the workpiece holder.

[0006] In some embodiments, the slider includes a first body and a positioning protrusion, the positioning protrusion being disposed on the side of the first body away from the stage, and the surface of the workpiece holder facing the slider having a positioning groove corresponding to the positioning protrusion.

[0007] In some embodiments, the positioning protrusion includes a positioning strip and a positioning post, wherein the positioning strip extends along the length direction of the first body.

[0008] In some embodiments, there are multiple workpiece holders, and two adjacent workpiece holders are connected by protrusions and grooves.

[0009] In some embodiments, the airtight box includes a box body and a detection seat connected together, the detection seat includes a first connecting part and a second connecting part, and the workpiece interface is located at the first connecting part.

[0010] In some embodiments, the second connecting portion is provided with a guide groove that connects to the workpiece interface for accommodating the workpiece to be tested.

[0011] In some embodiments, the ejector frame includes a second body and a plurality of ejector rods connected together, each ejector rod corresponding to a workpiece interface, and the diameter of the ejector rod is smaller than the diameter of the workpiece interface.

[0012] In some embodiments, the airtight box further includes an air inlet pipe, which is connected to the airtight cavity.

[0013] A second aspect of this utility model provides an airtightness testing system, including an airtightness fixture, an air supply device, and an airtightness tester. The air supply device is connected to the airtightness tester, and the airtightness tester is connected to the airtightness fixture. The airtightness fixture includes a platform, an airtightness box, a mounting base, a first driving component, a part ejector, and a second driving component. The airtightness box is fixed to the platform and has multiple interconnected workpiece interfaces and airtight cavities. The mounting base has multiple mounting positions, each corresponding to a workpiece interface and arranged opposite to it, for mounting the workpiece to be tested. The first driving component is drivenly connected to the mounting base and is used to drive the workpiece to be tested into the workpiece interface to form a sealed cavity. The part ejector is disposed inside the airtightness box and is arranged corresponding to the workpiece interface. The second driving component is drivenly connected to the part ejector and is used to drive the workpiece to be tested out of the workpiece interface.

[0014] Compared with the prior art, the airtight fixture provided in this embodiment of the utility model has a mounting base with multiple mounting positions and multiple workpiece interfaces, which can simultaneously mount multiple workpieces to be tested. The multiple workpiece interfaces are simultaneously connected to the airtight cavity. By introducing gas into the airtight cavity, multiple workpieces to be tested can be detected simultaneously, resulting in high detection efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A three-dimensional assembly structure diagram of an airtight fixture provided for an embodiment of this utility model;

[0017] Figure 2for Figure 1 An exploded view of the three-dimensional structure of the airtight fixture shown.

[0018] Figure 3 for Figure 1 An exploded view of the three-dimensional structure of the airtight fixture shown from another angle;

[0019] Figure 4 for Figure 3 A schematic diagram of the three-dimensional structure of the workpiece holder shown;

[0020] Figure 5 for Figure 1 A cross-sectional view of the airtight fixture shown;

[0021] Figure 6 This is a connection diagram of an airtightness detection system provided for an embodiment of the present utility model. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please refer to the following: Figure 1 and Figure 2 ,in, Figure 1 This is a three-dimensional assembly structure diagram of an airtight fixture provided in an embodiment of the present invention. Figure 2 for Figure 1 The diagram shows an exploded view of the three-dimensional structure of the airtight fixture. This embodiment of the invention provides an airtight fixture 10 for detecting the airtightness of a workpiece, specifically a connector terminal, such as... Figure 1 , 2 An electrical connector terminal 20 is shown, including a terminal body 21 and a sealant 22. The airtight fixture 10 can be used to test the airtightness of the electrical connector terminal 20. It can be understood that the airtightness of the electrical connector terminal 20 depends on the sealing effect of the sealant 22. Using the airtight fixture 10 to test its airtightness is essentially determining whether the sealant 22 is qualified.

[0024] The airtight fixture 10 includes a platform 11, a loading mechanism 13, and an airtight mechanism 15, which are fixed to the platform 11. The loading mechanism 13 is used to mount the workpiece to be tested and push it to the airtight mechanism 15 for airtightness testing.

[0025] Please see again Figure 2The upper component mechanism 13 includes a first housing 131, a first driving component 133, and a mounting base 135. The first housing 131 and the first driving component 133 are fixed to the platform 11. The first housing 131 covers the first driving component 133. The first driving component 133 is drivenly connected to the mounting base 135. The mounting base 135 is located at the opening of the first housing 131. The mounting base 135 cooperates with the first housing 131 to house the first driving component 133, preventing the first driving component 133 from being directly exposed to the external environment and providing dust protection.

[0026] It is understood that the first driving component 133 is a device for providing power to drive the mounting base 135 to reciprocate. The first driving component 133 can be a motor, a telescopic cylinder, etc. In this embodiment, the first driving component 133 is a telescopic cylinder.

[0027] In this embodiment, the mounting base 135 is connected to the drive shaft of the first drive member 133 through a connecting plate, and the first drive member 133 drives the mounting base 135 to slide on the platform 11. The structure is simple and suitable for short driving strokes.

[0028] In a further embodiment, a slide rail structure can be provided between the mounting base 135 and the platform 11 to maintain stability over long driving strokes.

[0029] Please see Figure 3 , Figure 3 for Figure 1 The diagram shows an exploded view of the airtight fixture from another angle. The mounting base 135 includes a slider 1351 and a workpiece holder 1353. The slider 1351 is fixed to the first driving member 133, and the workpiece holder 1353 is detachably mounted on the slider 1351 for mounting the workpiece to be tested.

[0030] It is understandable that the detachable workpiece holder 1353 can be pre-installed with the workpiece to be tested and then installed on the slider 1351, making it more convenient to use. The workpiece holder 1353 can be used as a transposition structure, which has a higher degree of cooperation with upstream and downstream processes and higher production efficiency.

[0031] The slider 1351 is L-shaped, and the workpiece holder 1353 is installed at the corner of the slider 1351. It includes a first body 13511 and a positioning protrusion. The positioning protrusion is located on the side of the first body 13511 away from the platform 11 and is used to position and install the workpiece holder 1353. The positioning protrusion includes a positioning strip 13513 and a positioning post 13515. The positioning strip 13513 extends along the length direction of the first body 13511.

[0032] Please see Figure 4 , Figure 4 for Figure 3 The diagram shows a three-dimensional structure of the workpiece holder. The workpiece holder 1353 includes a handheld part 13531 and a mounting part 13533 connected together. The mounting part 13533 has multiple mounting positions 13535 on its surface facing the airtight mechanism 15, and a positioning groove 13537 is provided on the surface facing the slider 1351 corresponding to the positioning strip 13513 and the positioning post 13515.

[0033] It is also understood that the workpiece holder 1353 is installed at the corner of the slider 1351, and the positioning protrusion and the positioning groove 13537 are provided, which can improve the stability of the first driving member 133 driving the workpiece holder 1353.

[0034] The number of workpiece holders 1353 can be one or more. In this embodiment, there are multiple workpiece holders 1353, and two adjacent workpiece holders 1353 are connected by protrusions and grooves.

[0035] Please see again Figure 2 The airtight mechanism 15 includes an airtight box 151, a second driving member 153, and a part ejector 155. The airtight box 151 is fixed to the platform 11, and the second driving member 153 and the part ejector 155 are housed in the airtight box 151.

[0036] Please refer to the following: Figure 3 and Figure 5 The picture shows Figure 1 The diagram shows a cross-sectional view of the airtight fixture. The airtight chamber 151 includes a second chamber 1511, a detection seat 1513, and an air inlet pipe 1515. The second chamber 1511, the detection seat 1513, and the platform 11 form an airtight cavity 1510. The air inlet pipe 1515 is located in the second chamber 1511 and communicates with the airtight cavity 1510 for introducing detection gas. The detection seat 1513 is provided with a workpiece interface 15131 that connects to the airtight cavity 1510. The workpiece interface 15131 is disposed opposite to the mounting position 13535. The detection seat 1513 is L-shaped and includes a first connecting portion 15132 and a second connecting portion 15133. The workpiece interface 15131 is located in the first connecting portion 15132, and the second connecting portion 15133 is provided with a guide groove 15135 that connects to the workpiece interface 15131 for accommodating the workpiece to be tested.

[0037] It is understood that for workpieces of different shapes, the shapes of the mounting position 13535, the workpiece interface 15131, and the guide groove 15135 are adapted to the shape of the workpiece. For example, for the electrical connector terminal 20, the mounting position 13535 and the workpiece interface 15131 are hole-shaped. During installation, the electrical connector terminal 20 is installed on the workpiece holder 1353 by inserting into the mounting position 13535. During testing, the first driving member 133 drives the electrical connector terminal 20 to insert into the workpiece interface 15131, and the sealant 22 blocks the workpiece interface 15131, sealing the airtight cavity 1510 to form a sealed cavity.

[0038] It is understood that, since the electrical connector terminal 20 is tubular, the mounting position 13535 and the workpiece interface 15131 are coaxially arranged so that the first driving member 133 can push the electrical connector terminal 20 from the mounting position 13535 to the workpiece interface 15131. For other shapes of workpieces to be tested, if the workpiece to be tested is bent, the mounting position 13535 and the workpiece interface 15131 are set in relative positions according to the bending angle of the workpiece to be tested, ensuring that the first driving member 133 can push the workpiece to be tested from the mounting position 13535 to the workpiece interface 15131, blocking the workpiece interface 15131 and forming a sealed cavity.

[0039] It is understood that in some embodiments, the housing may also be provided with a base plate, and the housing and the detection seat may be directly enclosed to form an airtight cavity.

[0040] The second driving component 153 is a device for providing power, and can be a motor, a telescopic cylinder, etc. In this embodiment, the second driving component 153 is a telescopic cylinder.

[0041] It is understandable that the cylinder cable needs to pass through the second housing 1511 and needs to be sealed to maintain the airtight environment inside the airtight housing 151. Existing sealing technologies can be used, such as sealant.

[0042] The ejector frame 155 includes a second body 1551 connected to it and a plurality of ejector rods 1553. Each ejector rod 1553 corresponds one-to-one with a workpiece interface 15131, and the diameter of each ejector rod 1553 is smaller than the diameter of the workpiece interface 15131. It is understood that the workpiece interface 15131 is a through hole, and the second driving member 153 can drive the ejector rod 1553 to insert into the workpiece interface 15131, pushing the electrical connector terminal 20 inserted into the workpiece interface 15131 out of the workpiece interface 15131 and resetting it.

[0043] It is understood that the second driving member 153 drives the ejector frame 155 to reciprocate.

[0044] It is also understood that the multiple mounting positions 13535 can be arranged in a queue, and correspondingly, the workpiece interface 15131, the guide groove 15135, and the ejector rod 1553 are also arranged in a queue; the multiple mounting positions 13535 can also be arranged in an array, in multiple rows, and correspondingly, the workpiece interface 15131, the guide groove 15135, and the ejector rod 1553 are also arranged in an array.

[0045] To illustrate the working principle of the airtight fixture 10, the electrical connector terminal 20 will be used as an example:

[0046] When the airtight fixture 10 is in operation, the electrical connector terminal 20 is first installed on the workpiece holder 1353, and then the workpiece holder 1353 is installed on the slider 1351. The controller controls the first drive unit 133 to drive the mounting base 135, causing the electrical connector terminal 20 to be inserted into the workpiece interface 15131. The sealant 22 blocks the workpiece interface 15131, sealing the airtight cavity 1510 into a sealed cavity. By detecting the airtightness of the sealed cavity, the airtightness of the electrical connector terminal 20 can be detected. After the detection is completed, the first drive unit 133 drives the mounting base 135 to reset, and the second drive unit 153 drives the ejector 155 to push the electrical connector terminal 20 out of the workpiece interface 15131. After resetting, the workpiece holder 1353 that has been tested is taken out, and the next batch of electrical connector terminals 20 can be tested.

[0047] It is understood that the workpiece holder 1353 can be pre-installed with the electrical connector terminal 20. When performing large-scale testing, continuous testing can be achieved by replacing the workpiece holder 1353, without having to disassemble and reassemble the electrical connector terminal 20 after testing is completed before the next test can be performed.

[0048] The controller can be an MCU controller, a CPU controller, a PLC, a microcontroller, etc.

[0049] Please see Figure 6 This is a connection diagram of an airtightness testing system provided in an embodiment of the present invention. This embodiment also provides an airtightness testing system 100, including the aforementioned airtightness fixture 10, a gas supply device 30, and an airtightness tester 40. The gas supply device 30 is connected to the gas pipe of the airtightness tester 40, and outputs a detection gas, which can be helium, air, nitrogen, etc. The airtightness tester 40 is connected to the air inlet pipe 1515 of the airtightness fixture 10.

[0050] The air tightness tester 40 can be a direct pressure type or a differential pressure type air tightness tester. Those skilled in the art can select a specific air tightness tester according to actual needs.

[0051] When the airtightness testing system 100 is working, the first driving component 133 of the airtightness fixture 10 drives the workpiece to be tested to be inserted into the workpiece interface 15131. After forming a sealed cavity, the airtightness tester 40 fills the sealed cavity with gas at a certain pressure through the air inlet pipe 1515. After reaching the set pressure, the air supply is stopped. The pressure sensor detects the pressure change in the sealed cavity within a preset time. If the pressure change value exceeds the allowable range, it is considered that the workpiece to be tested has leakage and poor airtightness; otherwise, it is considered that the workpiece to be tested is qualified.

[0052] Compared with the prior art, the airtight fixture 10 provided in this embodiment of the utility model is provided with a mounting base 135 having multiple mounting positions 13535 and multiple workpiece interfaces 15131, which can simultaneously mount multiple workpieces to be tested. The multiple workpiece interfaces 15131 are simultaneously connected to the airtight cavity 1510. By introducing gas into the airtight cavity 1510, multiple workpieces to be tested can be detected simultaneously, resulting in high detection efficiency.

[0053] The workpiece holder 1353 is detachably installed on the slider 1351. The workpiece holder 1353 can be used as a transposition structure to cooperate with upstream and downstream processes to improve production efficiency. At the same time, when performing large-scale testing, continuous testing can be achieved by replacing the workpiece holder 1353, further improving testing efficiency.

[0054] The above description is only a part of the embodiments of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the contents of the utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An airtight fixture, comprising a platform, characterized in that, Also includes: An airtight box, fixed to the platform, has interconnected airtight cavities and multiple workpiece interfaces; A mounting base with multiple mounting positions, each corresponding to a workpiece interface and arranged opposite to it, for mounting the workpiece to be tested; The first driving component is driven to be connected to the mounting base and is used to drive the workpiece to be tested to be inserted into the workpiece interface to form a sealed cavity. The ejector frame is located inside the airtight box and is configured corresponding to the workpiece interface; The second driving component is connected to the ejector frame and is used to drive the workpiece to be tested to exit the workpiece interface.

2. The airtight fixture according to claim 1, characterized in that, The mounting base includes a slider and a workpiece holder, the workpiece holder being detachably mounted on the slider, and the mounting position being located on the workpiece holder.

3. The airtight fixture according to claim 2, characterized in that, The slider includes a first body and a positioning protrusion. The positioning protrusion is located on the side of the first body away from the platform. The surface of the workpiece holder facing the slider is provided with a positioning groove corresponding to the positioning protrusion.

4. The airtight fixture according to claim 3, characterized in that, The positioning protrusion includes a positioning strip and a positioning post, and the positioning strip extends along the length direction of the first body.

5. The airtight fixture according to claim 2, characterized in that, The number of workpiece holders is multiple, and two adjacent workpiece holders are connected by protrusions and grooves.

6. The airtight fixture according to claim 1, characterized in that, The airtight box includes a box body and a detection seat connected together. The detection seat includes a first connecting part and a second connecting part, and the workpiece interface is located at the first connecting part.

7. The airtight fixture according to claim 6, characterized in that, The second connecting part is provided with a guide groove that connects to the workpiece interface for accommodating the workpiece to be tested.

8. The airtight fixture according to claim 1, characterized in that, The ejector frame includes a second body and a plurality of ejector rods connected together. Each ejector rod corresponds to a workpiece interface, and the diameter of each ejector rod is smaller than the diameter of the workpiece interface.

9. The airtight fixture according to claim 1, characterized in that, The airtight box also includes an air inlet pipe, which is connected to the airtight cavity.

10. An airtightness testing system, comprising an airtightness fixture, an air supply device, and an airtightness tester, wherein the air supply device is connected to the airtightness tester, and the airtightness tester is connected to the airtightness fixture, characterized in that, The airtight fixture is any one of the airtight fixtures described in claims 1-9.

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