A sample automatic clamping structure and gas permeation testing system

Abstract

The present disclosure provides a sample automatic clamping structure and a gas permeation test system. Among them, a sample automatic clamping structure is arranged in a sealable environmental chamber; the sample automatic clamping structure comprises: a first test chamber and a second test chamber on both sides of the sample; a first driving device connected to the first test chamber; a second driving device connected to the second test chamber; the first driving device and the second driving device are respectively used to drive the first test chamber and the second test chamber to move relative to each other, so that the first test chamber and the second test chamber are closed or separated, so as to realize automatic compression of the sample and automatic entry and exit of the environmental chamber.

Description

Technical Field

[0001] The present invention relates to the field of sample detection, and in particular to an automatic sample clamping structure and a gas permeation testing system. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] The principle of the differential pressure method for testing the gas barrier / permeability of samples is: due to the pressure difference on both sides of the sample, the gas vertically penetrates from one side of the sample to the other side, and the gas barrier / permeability of the sample is determined based on the amount of gas that penetrates the sample. If the sample is not well sealed, the gas on one side will leak from the periphery of the sample to the other side, resulting in inaccurate test results; when testing multiple groups of samples at the same time and comparing the permeability of the samples, the sealing degree of the periphery of different groups of samples is different, and the amount of gas leaking from the periphery of the sample to the other side is different, which also causes unstable test results.

[0004] During the research and development process, the inventors found that the current testing instruments rely on manual clamping and manual screwing to tighten the samples. The strength of manual clamping of samples is difficult to control and unify, and improper clamping methods will lead to large errors in the sample's barrier / permeability test for gas. Moreover, the process of manual clamping of samples is cumbersome and requires a high level of skill from the operator, so when different people clamp the samples, it is difficult to ensure the reliability of the seal of each group of samples; when the same person clamps multiple groups of samples, it is difficult to ensure the consistency of the packaging of different groups of samples; the above problems will lead to inaccurate and unstable instrument test results, ultimately reducing the test efficiency and detection accuracy of the equipment. Summary of the invention

[0005] One aspect of the present disclosure provides an automatic sample clamping structure, which can realize automatic entry and exit of the sample into the cavity, automatically compress and seal the sample, and ensure the same compression amplitude without manual tightening.

[0006] The technical solution of the automatic sample clamping structure disclosed in the present invention is:

[0007] A sample automatic clamping structure is arranged in a sealable environmental chamber; the sample automatic clamping structure comprises:

[0008] A first test cavity and a second test cavity on both sides of the specimen;

[0009] A first test cavity and a second test cavity on both sides of the specimen;

[0010] A first driving device connected to the first test chamber;

[0011] a second driving device connected to the second test chamber;

[0012] The first driving device and the second driving device are respectively used to drive the first test cavity and the second test cavity to move relative to each other, so that the first test cavity and the second test cavity are closed or separated, thereby realizing automatic compression of the sample and automatic entry and exit of the sample into the environmental chamber.

[0013] Furthermore, the first driving device and the second driving device are both connected to a controller.

[0014] The advantage of the above technical solution is that the controller is used to send control signals to the first driving device and the second driving device respectively to control the movement of the first test cavity and the second test cavity respectively.

[0015] Furthermore, a sealing device is provided between the first test cavity and the second test cavity.

[0016] The advantage of the above technical solution is that by arranging a sealing device between the first test cavity and the second test cavity, the sealing degree around the sample is uniform, and the gas on one side is prevented from leaking laterally from the periphery of the sample to the other side, thereby improving the reliability of the sample sealing and further improving the test efficiency and accuracy.

[0017] Furthermore, the sealing device is a sealing ring, and the sealing ring is arranged on the first test cavity or the second test cavity.

[0018] Furthermore, the sealing device comprises a first sealing member and a second sealing member, wherein the first sealing member and the second sealing member are respectively disposed on the first test cavity and the second test cavity, and the first sealing member and the second sealing member cooperate to seal the sample.

[0019] It should be noted that sealing grease may be provided on the edges of the first test cavity and the second test cavity that are arranged opposite to each other, and the sealing grease is used to seal the first test cavity and the second test cavity.

[0020] Further, when the first test chamber and the second test chamber are respectively arranged above and below the sample:

[0021] Before clamping the sample, the first driving device is used to drive the first test cavity to move upward, and the second driving device is used to drive the second test cavity to move in the horizontal direction, so that the first test cavity and the second test cavity are separated and the second test cavity extends out of the environmental chamber;

[0022] When the sample is placed in the second test chamber, the second driving device is used to drive the second test chamber to retract into the environmental chamber, and the first driving device is used to drive the first test chamber to move vertically downward, so that the first test chamber and the second test chamber are closed to compress the sample.

[0023] Further, when the first test chamber and the second test chamber are respectively arranged above and below the sample:

[0024] Before clamping the sample, the second driving device is used to drive the second test cavity to move downward, and the first driving device is used to drive the first test cavity to move in the horizontal direction, so that the first test cavity and the second test cavity are separated and the first test cavity extends out of the environmental chamber;

[0025] When the sample is adsorbed to the first test cavity, the first driving device is used to drive the first test cavity to retract into the environmental chamber, and the second driving device is used to drive the second test cavity to move vertically upward, so that the first test cavity and the second test cavity are closed to compress the sample.

[0026] Further, when the first test cavity and the second test cavity are respectively arranged on the left and right sides of the sample:

[0027] The first driving device and the second driving device are respectively used to drive the first test cavity and the second test cavity to move relative to each other in the horizontal direction, so as to close the first test cavity and the second test cavity and compress the sample;

[0028] The first driving device and the second driving device are also used to respectively drive the first test cavity and the second test cavity to move in opposite directions in the horizontal direction after the sample test is completed, so that the first test cavity and the second test cavity are separated.

[0029] Furthermore, the first test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the first test cavity to the surface of the first test cavity.

[0030] In an optional embodiment, the second test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the second test cavity to the surface of the second test cavity.

[0031] Specifically, the negative pressure device may be a vacuum pump, or a device capable of creating a vacuum, such as a vacuum generator.

[0032] Another technical solution for the automatic specimen clamping structure is:

[0033] A sample automatic clamping structure is arranged in a sealable environmental chamber; the sample automatic clamping structure comprises:

[0034] A first test cavity and a second test cavity on both sides of the specimen;

[0035] One of the first test cavity and the second test cavity is fixed and is a fixed cavity, and the other is a moving cavity;

[0036] The driving device is used to control the driving device to drive the movement chamber and the fixed chamber to close or separate, so as to realize automatic pressing of the sample and automatic entry and exit of the environmental chamber.

[0037] Furthermore, the driving device is connected to a controller.

[0038] Furthermore, a sealing device is provided between the first test cavity and the second test cavity.

[0039] The advantage of the above technical solution is that by arranging a sealing device between the first test cavity and the second test cavity, the sealing degree around the sample is uniform, and the gas on one side is prevented from leaking laterally from the periphery of the sample to the other side, thereby improving the reliability of the sample sealing and further improving the test efficiency and accuracy.

[0040] Furthermore, the sealing device is a sealing ring, and the sealing ring is arranged on the first test cavity or the second test cavity.

[0041] Furthermore, the sealing device comprises a first sealing member and a second sealing member, wherein the first sealing member and the second sealing member are respectively disposed on the first test cavity and the second test cavity, and the first sealing member and the second sealing member cooperate to seal the sample.

[0042] It should be noted that sealing grease may be provided on the edges of the first test cavity and the second test cavity that are arranged opposite to each other, and the sealing grease is used to seal the first test cavity and the second test cavity.

[0043] Furthermore, the first test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the first test cavity to the surface of the first test cavity.

[0044] In an optional embodiment, the second test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the second test cavity to the surface of the second test cavity.

[0045] Specifically, the negative pressure device may be a vacuum pump, or a device capable of creating a vacuum, such as a vacuum generator.

[0046] According to another aspect of the present disclosure, a gas permeation testing system is provided.

[0047] A sample detector disclosed in the present invention comprises:

[0048] Sealable environmental chamber;

[0049] At least one workstation is arranged in the environmental chamber, and each workstation is provided with the above-mentioned automatic sample clamping structure.

[0050] The beneficial effects of the present disclosure are:

[0051] (1) The present invention uses a driving device to drive the first test cavity and the second test cavity to move relative to each other to achieve good sealing of the sample, and the compression degree of the two cavities is consistent, thereby improving the stability of the test data and the detection accuracy;

[0052] (2) The present invention drives the first test chamber and the second test chamber to move relative to each other through a driving device, so that the sample automatically enters and exits the environmental chamber, thereby automating the entire clamping process, improving the efficiency of clamping the sample, and simplifying the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure.

[0054] Figure 1 This is a front view of an automatic specimen clamping structure provided in an embodiment of the present disclosure.

[0055] Figure 2 It is a left view of an automatic sample clamping structure provided in an embodiment of the present disclosure.

[0056] Figure 3 It is a left view of the extension of the second test cavity in the automatic sample clamping structure provided by the embodiment of the present disclosure.

[0057] Figure 4 It is a front view of another automatic sample clamping structure provided in an embodiment of the present disclosure.

[0058] Figure 5 It is a left view of another automatic sample clamping structure provided in an embodiment of the present disclosure.

[0059] Among them, 1. the first test chamber, 2. the screw, 3. the cylinder i, 4. the sealing ring, 5. the sample, 6. the second test chamber, 7. the guide rail, 8. the first fixed plate, 9. the cylinder ii, 10. the slider, 11. the environmental chamber, 12. the second fixed plate. DETAILED DESCRIPTION

[0060] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] Terminology explanation:

[0063] Environmental chamber: a cavity space with controllable airflow, air pressure, temperature or humidity.

[0064] Embodiment 1

[0065] The following embodiment is described by taking the first test chamber and the second test chamber as an example in which they are arranged vertically opposite to each other:

[0066] like Figure 1 and Figure 2 As shown, a sample automatic clamping structure of this embodiment includes:

[0067] A first test chamber 1 and a second test chamber 6; a sample 5 is disposed between the first test chamber 1 and the second test chamber 6; the first test chamber 1 and the second test chamber 6 are disposed above and below the sample 5, respectively;

[0068] Before clamping the sample, the first driving device is used to drive the first test cavity to move upward, and the second driving device is used to drive the second test cavity to move in the horizontal direction, so that the first test cavity and the second test cavity are separated and the second test cavity extends out of the environmental chamber;

[0069] When the sample is placed in the second test chamber, the second driving device is used to drive the second test chamber to retract into the environmental chamber, and the first driving device is used to drive the first test chamber to move vertically downward, so that the first test chamber and the second test chamber are closed to compress the sample.

[0070] During the clamping process, the second driving device drives the second test cavity to move in the horizontal direction, while the first driving device drives the first test cavity to move downward in the vertical direction by a first preset distance to close the first test cavity and the second test cavity and to compress the sample;

[0071] When the sample test is completed, the first driving device drives the first test chamber to move upward in the vertical direction by a preset distance, and the second driving device drives the second test chamber to move horizontally by a preset distance, thereby finally realizing automatic compression of the sample and automatic entry and exit of the environmental chamber.

[0072] The first preset distance is a distance that can be preset manually, and the distance value can close the test cavity formed by the first test cavity and the second test cavity and simultaneously achieve the purpose of compacting the sample.

[0073] In a specific implementation, both the first driving device and the second driving device are connected to a controller, and the controller is used to output control signals to the first driving device and the second driving device respectively.

[0074] It should be noted that when the first drive device and the second drive device are both cylinder structures, their telescopic amounts are fixed or manually pre-adjusted parameters when the products leave the factory. During operation, the cylinder can be operated by simply turning on the switch between the cylinder and the air source.

[0075] In this embodiment, a sealing device is further provided between the first test cavity and the second test cavity.

[0076] like Figure 1 As shown, the sealing device of this embodiment is a sealing ring 4.

[0077] In a specific implementation, the sealing ring 4 is arranged on the first test cavity or the second test cavity.

[0078] In an optional embodiment, the sealing device includes a first seal and a second seal, the first seal and the second seal are respectively disposed on the first test cavity and the second test cavity, and the first seal and the second seal cooperate to seal the sample.

[0079] In this embodiment, a sealing device is provided between the first test cavity and the second test cavity, so that the sealing degree around the sample is uniform, and the gas on one side is prevented from leaking laterally from the periphery of the sample into the other side, thereby improving the reliability of the sample sealing and further improving the test efficiency and accuracy.

[0080] It should be noted that sealing grease may be provided on the edges of the first test cavity and the second test cavity that are arranged opposite to each other, and the sealing grease is used to seal the first test cavity and the second test cavity.

[0081] In this embodiment, both the first driving device and the second driving device are implemented by cylinders.

[0082] Specifically, the first driving device is implemented by cylinder i3, and the first driving device drives the first test cavity to move in the vertical direction; the second driving device is implemented by cylinder ii9, and the second driving device drives the second test cavity to move in the horizontal direction.

[0083] In order to ensure that the force on the sample is uniform when the gap between the first test cavity and the second test cavity is closed, the driving shaft of the first driving device is symmetrically connected to the first test cavity. Figure 2 As shown, the driving shaft of the first driving device can be symmetrically connected at both ends of the first test cavity, so that the first test cavity is also subjected to uniform force during the movement.

[0084] It should be noted that the first driving device and the second driving device may also be implemented by any other existing driving structure forms, such as a motor, an electric cylinder or a hydraulic cylinder.

[0085] In this embodiment, it is taken as an example that the first driving device is implemented by cylinder i and the second driving device is implemented by cylinder ii, and cylinder i and cylinder ii are fixed to the first fixing plate 8:

[0086] The first fixing plate 8 is disposed below the second testing cavity 6 .

[0087] Specifically, in order to save equipment space, the cylinder i3 is arranged on both sides of the first test cavity 1 , and the cylinder i3 is connected to the first test cavity 1 through screws 2 .

[0088] In a specific implementation, a sliding device is further provided between the first fixing plate and the second testing cavity.

[0089] The sliding device is used to realize the horizontal movement of the second test cavity on the first fixed plate.

[0090] In a specific implementation, the sliding device can be implemented using an existing structure, such as:

[0091] The sliding device includes a guide structure and a sliding structure. The guide structure is arranged on the first fixed plate, and the sliding structure is arranged at the bottom end of the second test cavity. The sliding structure is used to drive the second test cavity to move horizontally along the guide structure under the drive of the cylinder ii.

[0092] In this embodiment, the guide structure may be implemented by a guide rail, and the sliding structure may be implemented by a slider 10 .

[0093] The structure in which the guide rail and the slider 10 cooperate is small and light, and is easier to implement.

[0094] In another embodiment, the second test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the second test cavity to the surface of the second test cavity.

[0095] In an optional embodiment, the first test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the first test cavity to the surface of the first test cavity.

[0096] Specifically, the negative pressure device may be a vacuum pump, or a device capable of creating a vacuum, such as a vacuum generator.

[0097] The vacuum pump is connected to the first test cavity or the second test cavity through a pipeline. The first test cavity or the second test cavity has an air hole. The first test cavity or the second test cavity is evacuated to form a gas negative pressure area on the surface of the first test cavity or the second test cavity. The sample to be tested is placed on the surface of the first test cavity or the second test cavity and adsorbed by the negative pressure. The test is adhered to the surface of the first test cavity or the second test cavity.

[0098] In this embodiment, if Figure 3As shown, the automatic sample clamping structure is arranged in the environmental chamber 11. Driven by the cylinder ii9, the second test chamber 6 moves along the guide rail and is placed outside the environmental chamber 11. The sample 5 is placed in the designated position of the second test chamber 6. The cylinder ii9 drives the second test chamber 6 back to the inside of the tester, and the negative pressure device is started to adsorb the sample. The sample is adsorbed and adhered to the surface of the second test chamber 6. When the second test chamber 6 is translated and retracted to the bottom of the first test chamber 1. The cylinder i3 drives the first test chamber 1 to move downward and close with the second test chamber 6, wherein the first test chamber 1 is provided with a sealing ring 4. The closing of the first test chamber 1 and the second test chamber 6 causes the sealing ring to press and seal the periphery of the sample, and the automatic sample packaging is completed.

[0099] It should be noted that the guide structure may also be implemented by a lead screw, and the sliding structure may be implemented by a nut.

[0100] In an optional embodiment, when the second driving device is used to drive the second test cavity to move in the horizontal direction, the second driving device is also a driving mechanism with a guide, and there is no need to provide a sliding device between the first fixing plate and the second test cavity.

[0101] Specifically, the guided driving mechanism can be implemented by driving a guided cylinder, wherein the guided cylinder has two telescopic rods, which is different from an ordinary cylinder having only one telescopic rod.

[0102] It should be noted that the guided driving mechanism can also be realized by using a guided electric cylinder drive.

[0103] The specific working principle of this embodiment is:

[0104] Before testing the sample, the first drive device drives the first test cavity to move upward, and the upper and lower cavities are separated. The second drive device drives the second test cavity to move horizontally and extend to the outside of the test instrument. After the sample is placed in the second test cavity, the second drive device drives the second test cavity to retract into the environmental chamber of the test instrument. At the same time, the first test cavity moves vertically downward to press the sample, realizing automatic cavity entry, automatic clamping and pressing of the sample;

[0105] When the sample test is completed, the first drive device drives the first test chamber to move upward in the vertical direction to separate the first test chamber from the second test chamber; the second drive device drives the second test chamber and the sample to extend outside the test instrument environment chamber, so that the sample can be automatically taken out of the chamber, and the test personnel can take the sample away. The permeability parameters of the sample are obtained based on the amount of gas that permeates the sample detected by the instrument.

[0106] The opening and closing of the first test cavity and the second test cavity of the present embodiment are driven by a driving device, the sample is well sealed and the compression degree is consistent, thereby achieving the purpose of stable test data and high detection accuracy; the automatic sample clamping structure of the present embodiment realizes the automation of the entire clamping process and improves the efficiency of clamping the sample; the automatic sample clamping structure of the present embodiment has a high degree of automation and is easy to operate.

[0107] Embodiment 2

[0108] like Figure 4 and Figure 5 As shown, different from the first embodiment, in the automatic sample clamping structure of this embodiment, the cylinder i3 is fixed on the second fixing plate 12, and the cylinder ii9 is fixed on the first fixing plate 8. The first fixing plate 8 is arranged below the second test cavity 6, and the second fixing plate 12 is arranged above the first test cavity 1.

[0109] The opening and closing of the first test cavity and the second test cavity of the present embodiment are driven by a driving device, the sample is well sealed and the compression degree is consistent, thereby achieving the purpose of stable test data and high detection accuracy; the automatic sample clamping structure of the present embodiment realizes the automation of the entire clamping process and improves the efficiency of clamping the sample; the automatic sample clamping structure of the present embodiment has a high degree of automation and is easy to operate.

[0110] Embodiment 3

[0111] A sample automatic clamping structure of this embodiment includes:

[0112] A first test chamber and a second test chamber, wherein a sample is disposed between the first test chamber and the second test chamber; the first test chamber and the second test chamber are disposed above and below the sample, respectively;

[0113] A first driving device connected to the first test chamber;

[0114] a second driving device connected to the second test chamber;

[0115] Before clamping the sample, the second driving device is used to drive the second test cavity to move downward by a second preset distance, and the first driving device is used to drive the first test cavity to move in a horizontal direction, so that the first test cavity and the second test cavity are separated and the first test cavity extends out of the environmental chamber;

[0116] When the sample is adsorbed to the first test cavity, the first driving device is used to drive the first test cavity to retract into the environmental chamber, and at the same time, the second test cavity moves vertically upward by a second preset distance under the drive of the second driving device, so that the first test cavity and the second test cavity are closed to compress the sample.

[0117] The second preset distance is a distance that can be preset manually, and the distance value can close the test cavity formed by the first test cavity and the second test cavity and simultaneously achieve the purpose of compacting the sample.

[0118] In a specific embodiment, a sliding device is provided at the top of the first test cavity, and the first driving device is used to drive the first test cavity to move in a horizontal direction along the sliding device.

[0119] In a specific implementation, the sliding device can be implemented using an existing structure, such as:

[0120] The sliding device includes a guide structure and a sliding structure. The guide structure is arranged on the horizontal fixed plate. The sliding structure is arranged on the top of the first test cavity. The sliding structure is used to drive the first test cavity to move horizontally along the guide structure under the drive of the first driving device.

[0121] The guiding structure can be realized by a guide rail, and the sliding structure can be realized by a slider.

[0122] Among them, the structure in which the guide rail and the slider cooperate is small and light, and is easier to implement.

[0123] In addition, the guide structure can also be implemented by a lead screw, and the sliding structure can be implemented by a nut.

[0124] In an optional embodiment, the first drive device is a belt-guided drive device.

[0125] Specifically, the guided driving device can be implemented by driving a guided cylinder, wherein the guided cylinder has two telescopic rods, which is different from an ordinary cylinder having only one telescopic rod.

[0126] It should be noted that the guided driving mechanism can also be realized by using a guided electric cylinder drive.

[0127] In a specific implementation, a sealing device is further provided between the first test cavity and the second test cavity.

[0128] Specifically, the sealing device is a sealing ring, and the sealing ring is arranged on the first test cavity or the second test cavity.

[0129] In an optional embodiment, the sealing device includes a first seal and a second seal, the first seal and the second seal are respectively disposed on the first test cavity and the second test cavity, and the first seal and the second seal cooperate to seal the sample.

[0130] It should be noted that sealing grease may be provided on the edges of the first test cavity and the second test cavity that are arranged opposite to each other, and the sealing grease is used to seal the first test cavity and the second test cavity.

[0131] In this embodiment, a sealing device is provided between the first test cavity and the second test cavity, so that the sealing degree around the sample is uniform, and the gas on one side is prevented from leaking laterally from the periphery of the sample into the other side, thereby improving the reliability of the sample sealing and further improving the test efficiency and accuracy.

[0132] In a specific embodiment, the first test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the first test cavity to the surface of the first test cavity.

[0133] In an optional embodiment, the second test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the second test cavity to the surface of the second test cavity.

[0134] Specifically, the negative pressure device may be a vacuum pump, or a device capable of creating a vacuum, such as a vacuum generator.

[0135] The vacuum pump is connected to the first test cavity or the second test cavity through a pipeline. The first test cavity or the second test cavity has an air hole. The first test cavity or the second test cavity is evacuated to form a gas negative pressure area on the surface of the first test cavity or the second test cavity. The sample to be tested is placed on the surface of the first test cavity or the second test cavity and adsorbed by the negative pressure. The test is adhered to the surface of the first test cavity or the second test cavity.

[0136] Embodiment 4

[0137] In the automatic sample clamping structure of this embodiment, the first test cavity and the second test cavity are respectively arranged on the left and right sides of the sample:

[0138] In this embodiment, the first driving device and the second driving device are respectively used to drive the first test cavity and the second test cavity to move relative to each other in the horizontal direction and move corresponding preset distances respectively, so as to close the gap between the first test cavity and the second test cavity and compress the sample;

[0139] The first driving device and the second driving device are also used to drive the first test chamber and the second test chamber to move oppositely in the horizontal direction and move the third preset distance and the fourth preset distance respectively after the sample test is completed, so as to open the gap between the first test chamber and the second test chamber, and finally realize automatic compression of the sample and automatic entry and exit of the environmental chamber.

[0140] In a specific implementation, a sliding device is provided at the bottom end of the first test cavity, and the first driving device is used to drive the first test cavity to move in a horizontal direction along the sliding device.

[0141] A sliding device is provided at the bottom end of the second test cavity, and the second driving device is used to drive the second test cavity to move in a horizontal direction along the sliding device.

[0142] In a specific implementation, the first sliding device and the second sliding device can be implemented using existing structures, such as:

[0143] The first sliding device and the second sliding device include a guide structure and a sliding structure. The guide structure is arranged on a horizontal fixed plate, and the sliding structure is arranged at the bottom end of the first test cavity. The sliding structure is used to drive the first test cavity to move horizontally along the guide structure under the drive of the first driving device.

[0144] The guiding structure can be realized by a guide rail, and the sliding structure can be realized by a slider.

[0145] Among them, the structure in which the guide rail and the slider cooperate is small and light, and is easier to implement.

[0146] In addition, the guide structure can also be implemented by a lead screw, and the sliding structure can be implemented by a nut.

[0147] In an alternative embodiment, the first drive device is a belt-guided drive device.

[0148] The second drive is a belt-guided drive.

[0149] Specifically, the guided driving device can be implemented by driving a guided cylinder, wherein the guided cylinder has two telescopic rods, which is different from an ordinary cylinder having only one telescopic rod.

[0150] It should be noted that the guided driving mechanism can also be realized by using a guided electric cylinder drive.

[0151] In one or more embodiments, the sliding device includes a guide structure and a sliding structure, the guide structure is arranged on a horizontal fixed plate, the sliding structure is arranged at the bottom end of the second test cavity, and the sliding structure is used to drive the first test cavity to move horizontally along the guide structure under the drive of the first driving device.

[0152] The guiding structure can be realized by a guide rail, and the sliding structure can be realized by a slider.

[0153] Among them, the structure in which the guide rail and the slider cooperate is small and light, and is easier to implement.

[0154] In addition, the guide structure can also be implemented by a lead screw, and the sliding structure can be implemented by a nut.

[0155] Specifically, the guided driving device can be implemented by driving a guided cylinder, wherein the guided cylinder has two telescopic rods, which is different from an ordinary cylinder having only one telescopic rod.

[0156] It should be noted that the guided driving mechanism can also be realized by using a guided electric cylinder drive.

[0157] In a specific implementation, a sealing device is further provided between the first test cavity and the second test cavity.

[0158] Specifically, the sealing device is a sealing ring, and the sealing ring is arranged on the first test cavity or the second test cavity.

[0159] In an optional embodiment, the sealing device includes a first seal and a second seal, the first seal and the second seal are respectively disposed on the first test cavity and the second test cavity, and the first seal and the second seal cooperate to seal the sample.

[0160] It should be noted that sealing grease may be provided on the edges of the first test cavity and the second test cavity that are arranged opposite to each other, and the sealing grease is used to seal the first test cavity and the second test cavity.

[0161] In this embodiment, a sealing device is provided between the first test cavity and the second test cavity, so that the sealing degree around the sample is uniform, and the gas on one side is prevented from leaking laterally from the periphery of the sample into the other side, thereby improving the reliability of the sample sealing and further improving the test efficiency and accuracy.

[0162] In a specific embodiment, the first test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the first test cavity to the surface of the first test cavity.

[0163] In an optional embodiment, the second test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the second test cavity to the surface of the second test cavity.

[0164] Specifically, the negative pressure device may be a vacuum pump, or a device capable of creating a vacuum, such as a vacuum generator.

[0165] The vacuum pump is connected to the first test cavity or the second test cavity through a pipeline. The first test cavity or the second test cavity has an air hole. The first test cavity or the second test cavity is evacuated to form a gas negative pressure area on the surface of the first test cavity or the second test cavity. The sample to be tested is placed on the surface of the first test cavity or the second test cavity and adsorbed by the negative pressure. The test is adhered to the surface of the first test cavity or the second test cavity.

[0166] Embodiment 5

[0167] A sample automatic clamping structure of this embodiment includes:

[0168] A first test cavity and a second test cavity; a sample is arranged between the first test cavity and the second test cavity, and the first test cavity and the second test cavity are arranged above and below the sample, respectively; the first test cavity is fixed;

[0169] A driving device is connected to the second test chamber; the driving device is used to drive the second test chamber to move upward in the vertical direction by a preset distance to close the gap between the first test chamber and the second test chamber and to compress the sample; when the sample test is completed, the second test chamber is driven to move downward in the vertical direction by a fifth preset distance to open the gap between the first test chamber and the second test chamber, thereby finally realizing automatic compression of the sample and automatic entry and exit of the sample from the environmental chamber.

[0170] The fifth preset distance is a distance that can be preset manually, and the distance value can close the test cavity formed by the first test cavity and the second test cavity and simultaneously achieve the purpose of compacting the sample.

[0171] In other embodiments, the first test chamber and the second test chamber are arranged opposite to each other in the upper and lower directions, and the second test chamber is fixed; the driving device is used to drive the first test chamber to move downward in the vertical direction by a first preset distance to close the gap between the first test chamber and the second test chamber and to compress the sample; when the sample test is completed, the first test chamber is driven to move upward in the vertical direction by a second preset distance to open the gap between the first test chamber and the second test chamber, thereby finally realizing automatic compression of the sample and automatic entry and exit of the environmental chamber.

[0172] In an optional embodiment, the first test chamber and the second test chamber can also be arranged on the left and right sides of the sample, respectively. One of the first test chamber and the second test chamber is fixed and is a fixed chamber, and the other is a moving chamber; a driving device is used to drive the moving chamber to move a fifth preset distance toward the fixed chamber to close the first test chamber and the second test chamber and press the sample; when the sample test is completed, the moving chamber is driven away from the fixed chamber by a fifth preset distance to separate the first test chamber and the second test chamber, and finally realize the automatic pressing of the sample and the automatic entry and exit of the environmental chamber.

[0173] In a specific implementation, the driving device can be implemented by a cylinder.

[0174] It should be noted that the driving device is implemented by using any other existing driving structure forms, such as: a motor, an electric cylinder or a hydraulic cylinder.

[0175] In a specific implementation, a sealing device is further provided between the first test cavity and the second test cavity.

[0176] Specifically, the sealing device is a sealing ring, and the sealing ring is arranged on the first test cavity or the second test cavity.

[0177] In an optional embodiment, the sealing device includes a first seal and a second seal, the first seal and the second seal are respectively disposed on the first test cavity and the second test cavity, and the first seal and the second seal cooperate to seal the sample.

[0178] It should be noted that sealing grease may be provided on the edges of the first test cavity and the second test cavity that are arranged opposite to each other, and the sealing grease is used to seal the first test cavity and the second test cavity.

[0179] In this embodiment, a sealing device is provided between the first test cavity and the second test cavity, so that the sealing degree around the sample is uniform, and the gas on one side is prevented from leaking laterally from the periphery of the sample into the other side, thereby improving the reliability of the sample sealing and further improving the test efficiency and accuracy.

[0180] In a specific embodiment, the first test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the first test cavity to the surface of the first test cavity.

[0181] In an optional embodiment, the second test cavity is connected to a negative pressure device, and the negative pressure device is used to adsorb and adhere the sample placed on the second test cavity to the surface of the second test cavity.

[0182] Specifically, the negative pressure device may be a vacuum pump, or a device capable of creating a vacuum, such as a vacuum generator.

[0183] The vacuum pump is connected to the first test cavity or the second test cavity through a pipeline. The first test cavity or the second test cavity has an air hole. The first test cavity or the second test cavity is evacuated to form a gas negative pressure area on the surface of the first test cavity or the second test cavity. The sample to be tested is placed on the surface of the first test cavity or the second test cavity and adsorbed by the negative pressure. The test is adhered to the surface of the first test cavity or the second test cavity.

[0184] This embodiment also provides a gas permeation testing system, which includes:

[0185] Sealable environmental chamber;

[0186] At least one workstation is arranged in the environmental chamber, and each workstation is provided with a clamping structure for automatically entering and exiting the cavity as described in any of the above embodiments.

[0187] The gas permeation testing system of this embodiment can realize automatic entry and exit of the sample into the cavity, and automatically compress and seal the sample without manual tightening, thereby ensuring the same compression amplitude.

[0188] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A sample automatic clamping structure, characterized in that: The automatic sample clamping structure is arranged in a sealable environmental chamber; the automatic sample clamping structure comprises: a first test chamber and a second test chamber on both sides of the sample; a first driving device connected to the first test chamber; a second driving device connected to the second test chamber; the first driving device and the second driving device are respectively used to drive the first test chamber and the second test chamber to move relative to each other, so that the first test chamber and the second test chamber are closed or separated, so as to realize automatic compression of the sample and automatic entry and exit of the sample from the environmental chamber; During the clamping process, while the second driving device drives the second test cavity to move in the horizontal direction, the first driving device drives the first test cavity to move downward in the vertical direction by a first preset distance to close the first test cavity and the second test cavity and to compress the sample, so that the test cavity formed by the first test cavity and the second test cavity is closed and the sample is compressed at the same time; The first test cavity is connected to a negative pressure device, and the negative pressure device is used to absorb and adhere the sample placed on the first test cavity to the surface of the first test cavity; or the second test cavity is connected to a negative pressure device, and the negative pressure device is used to absorb and adhere the sample placed on the second test cavity to the surface of the second test cavity; The sealing ring is arranged on the first test cavity or the second test cavity.

2. A sample automatic clamping structure, characterized in that: The automatic sample clamping structure is arranged in a sealable environmental chamber; the automatic sample clamping structure comprises: a first test chamber and a second test chamber on both sides of the sample; one of the first test chamber and the second test chamber is fixed and stationary as a fixed chamber, and the other is a moving chamber; a driving device is used to control the driving device to drive the moving chamber and the fixed chamber to close or separate, so as to realize automatic compression of the sample and automatic entry and exit of the environmental chamber; During the clamping process, while the second driving device drives the second test cavity to move in the horizontal direction, the first driving device drives the first test cavity to move downward in the vertical direction by a first preset distance to close the first test cavity and the second test cavity and to compress the sample, so that the test cavity formed by the first test cavity and the second test cavity is closed and the sample is compressed at the same time; The first test cavity is connected to a negative pressure device, which is used to absorb and adhere the sample placed on the first test cavity to the surface of the first test cavity; or the second test cavity is connected to a negative pressure device, which is used to absorb and adhere the sample placed on the second test cavity to the surface of the second test cavity.

3. The automatic sample clamping structure according to claim 1, characterized in that: The first driving device and the second driving device are both connected to the controller.

4. The automatic sample clamping structure according to claim 2, characterized in that: The driving device is connected with the controller.

5. The automatic sample clamping structure according to claim 1 or 2, characterized in that: A sealing device is also provided between the first test cavity and the second test cavity.

6. The automatic sample clamping structure according to claim 5, characterized in that: The sealing device is a sealing ring, which is arranged on the first test cavity or the second test cavity; or the sealing device includes a first seal and a second seal, which are respectively arranged on the first test cavity and the second test cavity, and the first seal and the second seal cooperate to seal the sample; or the first seal and the second seal are both arranged on the first test cavity or the second test cavity.

7. The automatic sample clamping structure according to claim 1, characterized in that: When the first test chamber and the second test chamber are respectively arranged above and below the sample: before clamping the sample, the first driving device is used to drive the first test chamber to move upward, and the second driving device is used to drive the second test chamber to move in the horizontal direction, so that the first test chamber and the second test chamber are separated and the second test chamber extends out of the environmental chamber; When the sample is placed in the second test chamber, the second driving device is used to drive the second test chamber to retract into the environmental chamber, and at the same time, the first driving device is used to drive the first test chamber to move vertically downward, so that the first test chamber and the second test chamber are closed to press the sample; or when the first test chamber and the second test chamber are respectively arranged above and below the sample: before clamping the sample, the second driving device is used to drive the second test chamber to move downward, and the first driving device is used to drive the first test chamber to move in the horizontal direction, so that the first test chamber and the second test chamber are separated and the first test chamber extends out of the environmental chamber; When the sample is adsorbed to the first test cavity, the first driving device is used to drive the first test cavity to retract into the environmental chamber, and the second driving device is used to drive the second test cavity to move vertically upward, so that the first test cavity and the second test cavity are closed to compress the sample.

8. The automatic sample clamping structure according to claim 1, characterized in that: When the first test cavity and the second test cavity are respectively arranged on the left and right sides of the sample: the first driving device and the second driving device are respectively used to correspondingly drive the first test cavity and the second test cavity to move relative to each other in the horizontal direction to close the first test cavity and the second test cavity and compress the sample; the first driving device and the second driving device are also used to correspondingly drive the first test cavity and the second test cavity to move oppositely in the horizontal direction after the sample test is completed, so that the first test cavity and the second test cavity are separated.

9. A gas permeation testing system, characterized in that: include: A sealable environmental chamber; at least one workstation is arranged in the environmental chamber, and each workstation is provided with an automatic sample clamping structure as described in any one of claims 1-8.

Images