CN209745767U - sample automatic clamping structure and gas permeation test system - Google Patents
sample automatic clamping structure and gas permeation test system Download PDFInfo
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- CN209745767U CN209745767U CN201920299627.XU CN201920299627U CN209745767U CN 209745767 U CN209745767 U CN 209745767U CN 201920299627 U CN201920299627 U CN 201920299627U CN 209745767 U CN209745767 U CN 209745767U
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Abstract
The utility model provides a sample automatically clamped structure and gas permeation test system. The automatic sample clamping structure is arranged in a sealable environmental chamber; sample automatically clamped structure includes: the first test cavity and the second test cavity are arranged on two sides of the test sample; the first driving device is connected with the first test cavity; the second driving device is connected with the second testing cavity; the first driving device and the second driving device are respectively used for driving the first testing cavity and the second testing cavity to move relatively, so that the first testing cavity and the second testing cavity are closed or separated, and automatic compaction and automatic entering and exiting of a sample in the environmental chamber are realized.
Description
Technical Field
The utility model belongs to sample detection area especially relates to a sample automatic clamping structure and gas permeation test system.
background
the statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The principle of the pressure difference method for detecting the gas barrier property/permeability of the sample is as follows: because of the pressure difference between the two sides of the sample, the gas vertically permeates from one side of the sample to the other side, and the barrier/permeability of the sample to the gas is judged according to the quantity of the gas permeating through the sample. If the sample is not sealed well, gas on one side can leak from the periphery of the sample transversely and enter the other side, so that the detection result is inaccurate; when the permeability of the samples is compared, the peripheral sealing degree of different groups of samples is different, and the amount of gas leaking from the peripheral side of the samples to the other side is different, so that the detection result is unstable.
The inventor finds that in the process of research and development, the samples of the existing detection instrument are all pressed by manually clamping and manually screwing. The strength of manually clamping the sample is difficult to control and unify, and the improper clamping mode can cause the gas barrier/permeability detection error of the sample to be larger. Moreover, the process of manually clamping the samples is complicated, and the requirement on the skill level of operators is high, so that the sealing reliability of each group of samples is difficult to ensure when different people clamp the samples; when the same person clamps a plurality of groups of samples, the packaging consistency of different groups of samples is difficult to ensure; the above problems all cause inaccurate and unstable detection results of the instrument, and finally reduce the test efficiency and detection precision of the equipment.
SUMMERY OF THE UTILITY MODEL
One aspect of the present disclosure provides a sample automatically clamped structure, and it can realize that the sample is automatic to be passed in and out the chamber, and the sealed sample of automatic compaction need not the manual work and screws up, guarantees that the range of compressing tightly is the same.
The technical scheme of the automatic sample clamping structure is as follows:
a sample automatic clamping structure is arranged in a sealable environmental chamber; sample automatically clamped structure includes:
The first test cavity and the second test cavity are arranged on two sides of the test sample;
The first test cavity and the second test cavity are arranged on two sides of the test sample;
The first driving device is connected with the first test cavity;
The second driving device is connected with the second testing cavity;
The first driving device and the second driving device are respectively used for driving the first testing cavity and the second testing cavity to move relatively, so that the first testing cavity and the second testing cavity are closed or separated, and automatic compaction and automatic entering and exiting of a sample in the environmental chamber are realized.
further, the first driving device and the second driving device are both connected with the controller.
The technical scheme has the advantages that the controller is used for respectively sending control signals to the first driving device and the second driving device to respectively control the first testing cavity and the second testing cavity to move.
Further, a sealing device is arranged between the first testing cavity and the second testing cavity.
Above-mentioned technical scheme's advantage lies in, through setting up sealing device between first test chamber and second test chamber for the peripheral sealed degree of sample is even, avoids one side gas to get into the opposite side from the peripheral horizontal edge leakage of sample, has improved the sealed reliability of sample, and then has improved test efficiency and precision.
Further, the sealing device is a sealing ring, and the sealing ring is arranged on the first testing cavity or the second testing cavity.
further, the sealing device comprises a first sealing element and a second sealing element, the first sealing element and the second sealing element are correspondingly arranged on the first testing cavity and the second testing cavity respectively, and the first sealing element and the second sealing element are matched with the sealing sample.
It should be noted that the opposite edges of the first testing cavity and the second testing cavity may further be provided with sealing grease, and the first testing cavity and the second testing cavity are sealed by the sealing grease.
Further, when the first test chamber and the second test chamber are disposed above and below the test specimen, respectively:
Before a sample is clamped, the first driving device is used for driving the first testing cavity to move upwards, and the second driving device is used for driving the second testing cavity to move along the horizontal direction, so that the first testing cavity and the second testing cavity are separated, and the second testing cavity extends out of the environment bin;
When a sample is placed in the second testing cavity, the second driving device is used for driving the second testing cavity to retract into the environment bin, and meanwhile, the first driving device is used for driving the first testing cavity to vertically move downwards, so that the first testing cavity and the second testing cavity are closed to compress the sample.
Further, when the first test chamber and the second test chamber are disposed above and below the test specimen, respectively:
Before a sample is clamped, the second driving device is used for driving the second testing cavity to move downwards, and the first driving device is used for driving the first testing cavity to move along the horizontal direction, so that the first testing cavity is separated from the second testing cavity, and the first testing cavity extends out of the environment bin;
When a sample is adsorbed to the first test cavity, the first driving device is used for driving the first test cavity to retract into the environment bin, and meanwhile, the second driving device is used for driving the second test cavity to vertically move upwards, so that the first test cavity and the second test cavity are closed to compress the sample.
Further, when the first test chamber and the second test chamber are disposed on the left and right sides of the test specimen, respectively:
The first driving device and the second driving device are respectively used for correspondingly driving the first testing cavity and the second testing cavity to move relatively along the horizontal direction so as to close the first testing cavity and the second testing cavity and compress the sample;
The first driving device and the second driving device are further used for respectively and correspondingly driving the first testing cavity and the second testing cavity to move back and forth along the horizontal direction after the test of the sample is finished, so that the first testing cavity and the second testing cavity are separated.
Further, first test chamber is connected with negative pressure device, negative pressure device is used for adsorbing the sample of placing on first test chamber and laminates to first test chamber surface.
In an optional embodiment, the second test chamber is connected with a negative pressure device, and the negative pressure device is used for attaching the sample placed on the second test chamber to the surface of the second test chamber in an adsorption manner.
specifically, the negative pressure device may be a vacuum pump, or may be a vacuum generator or other device capable of pumping vacuum.
The other technical scheme of the automatic sample clamping structure is as follows:
A sample automatic clamping structure is arranged in a sealable environmental chamber; sample automatically clamped structure includes:
The first test cavity and the second test cavity are arranged on two sides of the test sample;
One of the first test cavity and the second test cavity is fixed and fixed as a fixed cavity, and the other one is a moving cavity;
And the driving device is used for controlling the driving device to drive the moving cavity and the fixed cavity to be closed or separated, so that the sample is automatically compressed and automatically enters and exits the environmental chamber.
Further, the driving device is connected with the controller.
further, a sealing device is arranged between the first testing cavity and the second testing cavity.
above-mentioned technical scheme's advantage lies in, through setting up sealing device between first test chamber and second test chamber for the peripheral sealed degree of sample is even, avoids one side gas to get into the opposite side from the peripheral horizontal edge leakage of sample, has improved the sealed reliability of sample, and then has improved test efficiency and precision.
further, the sealing device is a sealing ring, and the sealing ring is arranged on the first testing cavity or the second testing cavity.
Further, the sealing device comprises a first sealing element and a second sealing element, the first sealing element and the second sealing element are correspondingly arranged on the first testing cavity and the second testing cavity respectively, and the first sealing element and the second sealing element are matched with the sealing sample.
it should be noted that the opposite edges of the first testing cavity and the second testing cavity may further be provided with sealing grease, and the first testing cavity and the second testing cavity are sealed by the sealing grease.
further, first test chamber is connected with negative pressure device, negative pressure device is used for adsorbing the sample of placing on first test chamber and laminates to first test chamber surface.
in an optional embodiment, the second test chamber is connected with a negative pressure device, and the negative pressure device is used for attaching the sample placed on the second test chamber to the surface of the second test chamber in an adsorption manner.
specifically, the negative pressure device may be a vacuum pump, or may be a vacuum generator or other device capable of pumping vacuum.
In another aspect of the present disclosure, a gas permeation testing system is provided.
The utility model discloses a sample detector, include:
a sealable environmental chamber;
At least one station is arranged in the environment bin, and the automatic sample clamping structure is arranged on each station.
The beneficial effects of this disclosure are:
(1) The test device has the advantages that the first test cavity and the second test cavity are driven by the driving device to move relatively, so that a test sample is well sealed, the compression degree of the two cavities is consistent, and the stability and the detection precision of test data are improved;
(2) This openly drives both relative motion in first test chamber and second test chamber through drive arrangement for the automatic environmental chamber that passes in and out of sample has realized the automation of whole clamping process, has improved the efficiency of clamping sample, and is easy and simple to handle moreover.
Drawings
the accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
Fig. 1 is a front view of a specimen automatic clamping structure provided by the embodiment of the disclosure.
Fig. 2 is a left side view of a sample automatic clamping structure provided by the embodiment of the disclosure.
fig. 3 is a left side view of the second testing chamber in the automatic specimen clamping structure according to the embodiment of the disclosure.
Fig. 4 is a front view of another automatic specimen clamping structure provided by the embodiment of the disclosure.
fig. 5 is a left side view of another automatic specimen clamping structure provided in the embodiment of the present disclosure.
The test device comprises a test device, a first test chamber, a screw, a cylinder i, a sealing ring, a test sample, a second test chamber, a guide rail, a first fixing plate, a cylinder ii, a sliding block, an environment chamber and a second fixing plate, wherein the first test chamber is 1, the screw is 2, the cylinder i is 3, the sealing ring is 4, the test sample is 5, the second test chamber is 6, the guide rail is 7, the first fixing plate is 8.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Interpretation of terms:
an environment bin: the air flow or the air pressure or the temperature or the humidity can be controlled.
Example one
The following embodiment is described by taking an example of the first test chamber and the second test chamber being arranged up and down oppositely:
As shown in fig. 1 and fig. 2, the automatic specimen clamping structure of the present embodiment includes:
A first test chamber 1 and a second test chamber 6; a test sample 5 is arranged between the first test cavity 1 and the second test cavity 6; the first testing cavity 1 and the second testing cavity 6 are respectively arranged above and below the test sample 5;
Before a sample is clamped, the first driving device is used for driving the first testing cavity to move upwards, and the second driving device is used for driving the second testing cavity to move along the horizontal direction, so that the first testing cavity and the second testing cavity are separated, and the second testing cavity extends out of the environment bin;
When a sample is placed in the second testing cavity, the second driving device is used for driving the second testing cavity to retract into the environment bin, and meanwhile, the first driving device is used for driving the first testing cavity to vertically move downwards, so that the first testing cavity and the second testing cavity are closed to compress the sample.
In the clamping process, the second driving device drives the second testing cavity to move along the horizontal direction, and simultaneously the first driving device drives the first testing cavity to move downwards along the vertical direction for a first preset distance to close the first testing cavity and the second testing cavity and compress a sample;
After the test of the sample is finished, the first driving device drives the first test cavity to move upwards for a preset distance along the vertical direction, the second driving device drives the second test cavity to move for a preset distance along the horizontal direction, and finally the automatic compaction and the automatic entering and exiting of the sample into and out of the environmental chamber are achieved.
The first preset distance is an artificially preset distance, and the distance value can close a test cavity formed by the first test cavity and the second test cavity and simultaneously achieve the purpose of pressing the test sample.
In a specific implementation, the first driving device and the second driving device are both connected to a controller, and the controller is configured to output control signals to the first driving device and the second driving device, respectively.
It should be noted that, when the first driving device and the second driving device are both of the cylinder structure, the expansion amount of the first driving device and the second driving device is fixed or manually preset parameters when the product leaves a factory, and the operation of the cylinder can be realized only by opening a switch between the cylinder and an air source when the product works.
In this embodiment, a sealing device is further disposed between the first testing chamber and the second testing chamber.
as shown in fig. 1, the sealing device of the present embodiment is a gasket 4.
in a specific embodiment, the sealing ring 4 is arranged on the first test chamber or the second test chamber.
In an optional embodiment, the sealing device comprises a first sealing element and a second sealing element, the first sealing element and the second sealing element are respectively and correspondingly arranged on the first testing cavity and the second testing cavity, and the first sealing element and the second sealing element are matched to realize the sealing of the test sample.
this embodiment is through setting up sealing device between first test chamber and second test chamber for the peripheral sealed degree of sample is even, avoids one side gas to get into the opposite side from the peripheral horizontal edge leakage of sample, has improved the sealed reliability of sample, and then has improved test efficiency and precision.
it should be noted that the opposite edges of the first testing cavity and the second testing cavity may further be provided with sealing grease, and the first testing cavity and the second testing cavity are sealed by the sealing grease.
In the present embodiment, the first driving device and the second driving device are both implemented by using air cylinders.
specifically, the first driving device is realized by using an air cylinder i3, and the first driving device drives the first test cavity to move in the vertical direction; the second driving device is realized by using an air cylinder ii9, and the second driving device drives the second test cavity to move in the horizontal direction.
in order to ensure that the stress of the sample is uniform when the gap between the first testing cavity and the second testing cavity is closed, the driving shaft of the first driving device is symmetrically connected with the first testing cavity. As shown in fig. 2, the driving shaft of the first driving device may be symmetrically connected to both ends of the first test chamber, so that the first test chamber is uniformly stressed during the movement.
it should be noted that the first driving device and the second driving device can also be implemented by any one of other existing driving structure forms, such as: an electric motor, an electric cylinder or a hydraulic cylinder.
In the present embodiment, taking as an example that the first driving means is implemented by using a cylinder i and the second driving means is implemented by using a cylinder ii, and the cylinder i and the cylinder ii are fixed to the first fixing plate 8:
A first holding plate 8 is arranged below the second test chamber 6.
Specifically, in order to save the space of the apparatus, air cylinders i3 are provided at both sides of the first test chamber 1, and an air cylinder i3 is connected to the first test chamber 1 by a screw 2.
In a specific implementation, a sliding device is further arranged between the first fixing plate and the second testing cavity.
the sliding device is used for realizing the horizontal movement of the second testing cavity on the first fixing plate.
In a specific implementation, the sliding device can be implemented using existing structures, such as:
the sliding device comprises a guide structure and a sliding structure, the guide structure is arranged on the first fixing plate, the sliding structure is arranged at the bottom end of the second testing cavity, and the sliding structure is used for driving the second testing cavity to horizontally move along the guide structure under the driving of the air cylinder ii.
in this embodiment, the guiding structure may be a guide rail, and the sliding structure is implemented by the slider 10.
The structure of the guide rail and the slider 10 is small and light, and is easy to realize.
in another embodiment, the second test chamber is connected with a negative pressure device, and the negative pressure device is used for attaching the sample placed on the second test chamber to the surface of the second test chamber in an absorption manner.
in an alternative embodiment, the first test chamber is connected with a negative pressure device, and the negative pressure device is used for attaching the sample placed on the first test chamber to the surface of the first test chamber in an absorption manner.
Specifically, the negative pressure device may be a vacuum pump, or may be a vacuum generator or other device capable of pumping vacuum.
the vacuum pump is connected with the first test cavity or the second test cavity through a pipeline, the first test cavity or the second test cavity is provided with an air hole, the first test cavity or the second test cavity is vacuumized, a gas negative pressure area is formed on the surface of the first test cavity or the second test cavity, a sample to be tested is placed on the surface of the first test cavity or the second test cavity and is adsorbed by negative pressure, and the test is attached to the surface of the first test cavity or the second test cavity.
in this embodiment, as shown in fig. 3, the automatic specimen clamping structure is disposed in the environmental chamber 11, and the second test chamber 6 moves along the guide rail and is disposed outside the environmental chamber 11 by the driving of the air cylinder ii 9. The sample 5 is placed at the designated position of the second testing cavity 6, the air cylinder ii9 drives the second testing cavity 6 to return to the inside of the tester, the negative pressure device is started to adsorb the sample, and the sample is adsorbed and attached to the surface of the second testing cavity 6. When the second test chamber 6 is retracted in translation right under the first test chamber 1. The cylinder i3 drives the first test chamber 1 to move downwards and is closed with the second test chamber 6, wherein the first test chamber 1 is provided with the sealing ring 4, the closing of the first test chamber 1 and the second test chamber 6 enables the sealing ring to compress the periphery of the sealed sample, and the automatic sample packaging is finished.
it should be noted that the guiding structure may also be a lead screw, and the sliding structure is implemented by a nut.
in an alternative embodiment, when the second drive means is used to drive the second test chamber in a horizontal direction, the second drive means is also a belt-guided drive mechanism, and no sliding means need be provided between the first fixing plate and the second test chamber.
specifically, the driving mechanism with guide can be realized by adopting a cylinder drive with guide, wherein the cylinder with guide is provided with two telescopic rods, and is different from a common cylinder with only one telescopic rod.
The driving mechanism with guide can also be realized by an electric cylinder drive with guide.
The specific working principle of this embodiment is as follows:
The test sample is clamped before being tested, the first driving device drives the first test cavity to move upwards, and at the moment, the upper cavity and the lower cavity are separated. The second driving device drives the second testing cavity to move along the horizontal direction, the second testing cavity extends to the outside of the testing instrument, after a sample is placed in the second testing cavity, the second driving device drives the second testing cavity to retract into the environmental bin of the testing instrument, and meanwhile, the first testing cavity moves vertically downwards to compress the sample, so that automatic cavity entry, automatic clamping and compression of the sample are realized;
After the test of the sample is finished, the first driving device drives the first test cavity to move upwards along the vertical direction so as to separate the first test cavity from the second test cavity; the second driving device drives the second testing cavity and the sample to stretch to the outside of the testing instrument environment bin, so that the sample can be automatically discharged out of the cavity, and the sample is taken away by a tester. And obtaining the permeability parameter of the sample according to the gas quantity permeated by the sample detected by the instrument.
the first test chamber and the second test chamber are driven to open and close by the driving device, so that the test sample is well sealed, the compaction degree is consistent, and the purposes of stable test data and high detection precision are achieved; the automatic sample clamping structure of the embodiment realizes the automation of the whole clamping process and improves the efficiency of clamping samples; the automatic sample clamping structure is high in automation degree and simple and convenient to operate.
example two
As shown in fig. 4 and 5, unlike the first embodiment, in the automatic specimen clamping structure of the present embodiment, the air cylinder i3 is fixed to the second fixing plate 12, and the air cylinder ii9 is fixed to the first fixing plate 8. Wherein the first fixing plate 8 is disposed below the second test chamber 6 and the second fixing plate 12 is disposed above the first test chamber 1.
the first test chamber and the second test chamber are driven to open and close by the driving device, so that the test sample is well sealed, the compaction degree is consistent, and the purposes of stable test data and high detection precision are achieved; the automatic sample clamping structure of the embodiment realizes the automation of the whole clamping process and improves the efficiency of clamping samples; the automatic sample clamping structure is high in automation degree and simple and convenient to operate.
EXAMPLE III
The sample automatically clamped structure of this embodiment includes:
The test device comprises a first test cavity and a second test cavity, wherein a test sample is arranged between the first test cavity and the second test cavity; the first testing cavity and the second testing cavity are respectively arranged above and below the sample;
The first driving device is connected with the first test cavity;
The second driving device is connected with the second testing cavity;
Before a sample is clamped, the second driving device is used for driving the second testing cavity to move downwards for a second preset distance, and the first driving device is used for driving the first testing cavity to move along the horizontal direction, so that the first testing cavity is separated from the second testing cavity, and the first testing cavity extends out of the environment bin;
when a sample is adsorbed to the first test cavity, the first driving device is used for driving the first test cavity to retract into the environment bin, and meanwhile, the second test cavity vertically moves upwards for a second preset distance under the driving of the second driving device, so that the first test cavity and the second test cavity are closed to compress the sample.
The second preset distance is an artificially preset distance, 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 pressing the sample.
In a specific embodiment, the top end of the first test chamber is provided with a sliding device, and the first driving device is used for driving the first test chamber to move along the sliding device in the horizontal direction.
In a specific implementation, the sliding device can be implemented using existing structures, such as:
The sliding device comprises a guide structure and a sliding structure, the guide structure is arranged on the horizontal fixing plate, the sliding structure is arranged at the top end of the first testing cavity, and the sliding structure is used for driving the first testing cavity to move horizontally along the guide structure under the driving of the first driving device.
the guide structure can adopt a guide rail, and the sliding structure is realized by adopting a sliding block.
Wherein, the structure that the guide rail matches with the slider is small and light, and is easier to realize.
In addition, the guide structure can also adopt a lead screw, and the sliding structure is realized by adopting a nut.
In an alternative embodiment, the first drive is a belt-guided drive.
Specifically, the driving device with guide can be realized by adopting a cylinder drive with guide, wherein the cylinder with guide is provided with two telescopic rods, and is different from a common cylinder with only one telescopic rod.
The driving mechanism with guide can also be realized by an electric cylinder drive with guide.
In a specific implementation, a sealing device is further arranged between the first testing chamber and the second testing chamber.
Specifically, the sealing device is a sealing ring, and the sealing ring is arranged on the first testing cavity or the second testing cavity.
In an alternative embodiment, the sealing device comprises a first sealing element and a second sealing element, the first sealing element and the second sealing element are respectively and correspondingly arranged on the first testing cavity and the second testing cavity, and the first sealing element and the second sealing element are matched with the sealing sample.
it should be noted that the opposite edges of the first testing cavity and the second testing cavity may further be provided with sealing grease, and the first testing cavity and the second testing cavity are sealed by the sealing grease.
This embodiment is through setting up sealing device between first test chamber and second test chamber for the peripheral sealed degree of sample is even, avoids one side gas to get into the opposite side from the peripheral horizontal edge leakage of sample, has improved the sealed reliability of sample, and then has improved test efficiency and precision.
In a specific embodiment, the first test cavity is connected with a negative pressure device, and the negative pressure device is used for attaching the sample placed on the first test cavity to the surface of the first test cavity in an adsorption manner.
In an optional embodiment, the second test chamber is connected with a negative pressure device, and the negative pressure device is used for attaching the sample placed on the second test chamber to the surface of the second test chamber in an adsorption manner.
Specifically, the negative pressure device may be a vacuum pump, or may be a vacuum generator or other device capable of pumping vacuum.
The vacuum pump is connected with the first test cavity or the second test cavity through a pipeline, the first test cavity or the second test cavity is provided with an air hole, the first test cavity or the second test cavity is vacuumized, a gas negative pressure area is formed on the surface of the first test cavity or the second test cavity, a sample to be tested is placed on the surface of the first test cavity or the second test cavity and is adsorbed by negative pressure, and the test is attached to the surface of the first test cavity or the second test cavity.
Example four
In the sample automatically clamped structure of this embodiment, first test chamber and second test chamber set up respectively on the left side and the right side of sample:
In this embodiment, the first driving device and the second driving device are respectively used for correspondingly driving the first testing chamber and the second testing chamber to relatively move along the horizontal direction and respectively move for a corresponding preset distance so as to close a gap between the first testing chamber and the second testing chamber and compress a sample;
the first driving device and the second driving device are further used for respectively and correspondingly driving the first testing cavity and the second testing cavity to move back and forth along the horizontal direction and respectively move a third preset distance and a fourth preset distance after the test of the sample is finished so as to open a gap between the first testing cavity and the second testing cavity, and finally, the sample is automatically compressed and automatically enters and exits the environmental chamber.
In a specific implementation, a sliding device is arranged at the bottom end of the first test chamber, and the first driving device is used for driving the first test chamber to move in the horizontal direction along the sliding device.
The bottom end of the second testing cavity is provided with a sliding device, and the second driving device is used for driving the second testing cavity to move in the horizontal direction along the sliding device.
In a specific implementation, the first sliding device and the second sliding device can be implemented by using an existing structure, such as:
the first sliding device and the second sliding device comprise a guide structure and a sliding structure, the guide structure is arranged on the horizontal fixing plate, the sliding structure is arranged at the bottom end of the first testing cavity, and the sliding structure is used for driving the first testing cavity to horizontally move along the guide structure under the driving of the first driving device.
The guide structure can adopt a guide rail, and the sliding structure is realized by adopting a sliding block.
Wherein, the structure that the guide rail matches with the slider is small and light, and is easier to realize.
In addition, the guide structure can also adopt a lead screw, and the sliding structure is realized by adopting a nut.
in an alternative embodiment, the first drive is a belt-guided drive.
The second drive is a guided drive.
specifically, the driving device with guide can be realized by adopting a cylinder drive with guide, wherein the cylinder with guide is provided with two telescopic rods, and is different from a common cylinder with only one telescopic rod.
The driving mechanism with guide can also be realized by an electric cylinder drive with guide.
In one or more embodiments, the sliding device includes a guiding structure and a sliding structure, the guiding structure is disposed on the horizontal fixing plate, the sliding structure is disposed at the bottom end of the second testing chamber, and the sliding structure is configured to drive the first testing chamber to move horizontally along the guiding structure under the driving of the first driving device.
The guide structure can adopt a guide rail, and the sliding structure is realized by adopting a sliding block.
Wherein, the structure that the guide rail matches with the slider is small and light, and is easier to realize.
In addition, the guide structure can also adopt a lead screw, and the sliding structure is realized by adopting a nut.
Specifically, the driving device with guide can be realized by adopting a cylinder drive with guide, wherein the cylinder with guide is provided with two telescopic rods, and is different from a common cylinder with only one telescopic rod.
The driving mechanism with guide can also be realized by an electric cylinder drive with guide.
in a specific implementation, a sealing device is further arranged between the first testing chamber and the second testing chamber.
Specifically, the sealing device is a sealing ring, and the sealing ring is arranged on the first testing cavity or the second testing cavity.
in an alternative embodiment, the sealing device comprises a first sealing element and a second sealing element, the first sealing element and the second sealing element are respectively and correspondingly arranged on the first testing cavity and the second testing cavity, and the first sealing element and the second sealing element are matched with the sealing sample.
It should be noted that the opposite edges of the first testing cavity and the second testing cavity may further be provided with sealing grease, and the first testing cavity and the second testing cavity are sealed by the sealing grease.
this embodiment is through setting up sealing device between first test chamber and second test chamber for the peripheral sealed degree of sample is even, avoids one side gas to get into the opposite side from the peripheral horizontal edge leakage of sample, has improved the sealed reliability of sample, and then has improved test efficiency and precision.
In a specific embodiment, the first test cavity is connected with a negative pressure device, and the negative pressure device is used for attaching the sample placed on the first test cavity to the surface of the first test cavity in an adsorption manner.
in an optional embodiment, the second test chamber is connected with a negative pressure device, and the negative pressure device is used for attaching the sample placed on the second test chamber to the surface of the second test chamber in an adsorption manner.
Specifically, the negative pressure device may be a vacuum pump, or may be a vacuum generator or other device capable of pumping vacuum.
The vacuum pump is connected with the first test cavity or the second test cavity through a pipeline, the first test cavity or the second test cavity is provided with an air hole, the first test cavity or the second test cavity is vacuumized, a gas negative pressure area is formed on the surface of the first test cavity or the second test cavity, a sample to be tested is placed on the surface of the first test cavity or the second test cavity and is adsorbed by negative pressure, and the test is attached to the surface of the first test cavity or the second test cavity.
EXAMPLE five
The sample automatically clamped structure of this embodiment includes:
a first test chamber and a second test chamber; a test sample is arranged between the first test cavity and the second test cavity, and the first test cavity and the second test cavity are respectively arranged above and below the test sample; the first test cavity is fixed;
The driving device is connected with the second testing cavity; the driving device is used for driving the second testing cavity to move upwards for a preset distance along the vertical direction so as to close the gap between the first testing cavity and the second testing cavity and compress the sample; after the test of the sample is finished, the second testing cavity is driven to move downwards by a fifth preset distance along the vertical direction so as to open the gap between the first testing cavity and the second testing cavity, and finally, the automatic compaction and the automatic entering and exiting of the sample into and out of the environmental chamber are realized.
The fifth preset distance is a distance which can be artificially preset, 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 pressing the sample.
In other embodiments, the first test chamber and the second test chamber are arranged oppositely up and down, and the second test chamber is fixed; the driving device is used for driving the first testing cavity to move downwards along the vertical direction by a first preset distance so as to close the gap between the first testing cavity and the second testing cavity and compress the sample; after the test of the sample is finished, the first test cavity is driven to move upwards for a second preset distance along the vertical direction so as to open the gap between the first test cavity and the second test cavity, and finally, the automatic compaction and the automatic in-and-out of the environmental chamber of the sample are realized.
In an alternative embodiment, the first test chamber and the second test chamber may also be arranged on the left and right side of the test specimen, respectively. Wherein, either one of the first test cavity and the second test cavity is fixed as a fixed cavity, and the other one is a moving cavity; the driving device is used for driving the moving cavity to move a fifth preset distance towards the fixed cavity direction so as to close the first testing cavity and the second testing cavity and compress the sample; after the test of the sample is finished, the movement cavity is driven to be away from the fixed cavity by a fifth preset distance so that the first test cavity and the second test cavity are separated, and finally the automatic compaction and the automatic entering and exiting of the sample are realized.
In a specific implementation, the driving means may be implemented using a cylinder.
It should be noted that the driving device is implemented by any one of other existing driving structure forms, for example: an electric motor, an electric cylinder or a hydraulic cylinder.
In a specific implementation, a sealing device is further arranged between the first testing chamber and the second testing chamber.
Specifically, the sealing device is a sealing ring, and the sealing ring is arranged on the first testing cavity or the second testing cavity.
In an alternative embodiment, the sealing device comprises a first sealing element and a second sealing element, the first sealing element and the second sealing element are respectively and correspondingly arranged on the first testing cavity and the second testing cavity, and the first sealing element and the second sealing element are matched with the sealing sample.
it should be noted that the opposite edges of the first testing cavity and the second testing cavity may further be provided with sealing grease, and the first testing cavity and the second testing cavity are sealed by the sealing grease.
This embodiment is through setting up sealing device between first test chamber and second test chamber for the peripheral sealed degree of sample is even, avoids one side gas to get into the opposite side from the peripheral horizontal edge leakage of sample, has improved the sealed reliability of sample, and then has improved test efficiency and precision.
In a specific embodiment, the first test cavity is connected with a negative pressure device, and the negative pressure device is used for attaching the sample placed on the first test cavity to the surface of the first test cavity in an adsorption manner.
in an optional embodiment, the second test chamber is connected with a negative pressure device, and the negative pressure device is used for attaching the sample placed on the second test chamber to the surface of the second test chamber in an adsorption manner.
Specifically, the negative pressure device may be a vacuum pump, or may be a vacuum generator or other device capable of pumping vacuum.
The vacuum pump is connected with the first test cavity or the second test cavity through a pipeline, the first test cavity or the second test cavity is provided with an air hole, the first test cavity or the second test cavity is vacuumized, a gas negative pressure area is formed on the surface of the first test cavity or the second test cavity, a sample to be tested is placed on the surface of the first test cavity or the second test cavity and is adsorbed by negative pressure, and the test is attached to the surface of the first test cavity or the second test cavity.
the present embodiment also provides a gas permeation testing system, which includes:
A sealable environmental chamber;
At least one station is arranged in the environment bin, and a clamping structure which can automatically enter and exit the cavity in any one of the embodiments is arranged on each station.
The gas permeation testing system of this embodiment can realize that the sample is automatic to be passed in and out the chamber, and automatic compressing tightly seals the sample, need not the manual work and screws up, guarantees that the range of compressing tightly is the same.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. The automatic sample clamping structure is characterized in that the automatic sample clamping structure is arranged in a sealable environmental chamber; sample automatically clamped structure includes:
the first test cavity and the second test cavity are arranged on two sides of the test sample;
The first driving device is connected with the first test cavity;
the second driving device is connected with the second testing cavity;
the first driving device and the second driving device are respectively used for driving the first testing cavity and the second testing cavity to move relatively, so that the first testing cavity and the second testing cavity are closed or separated, and automatic compaction and automatic entering and exiting of a sample in the environmental chamber are realized.
2. the automatic sample clamping structure is characterized in that the automatic sample clamping structure is arranged in a sealable environmental chamber; sample automatically clamped structure includes:
The first test cavity and the second test cavity are arranged on two sides of the test sample;
One of the first test cavity and the second test cavity is fixed and fixed as a fixed cavity, and the other one is a moving cavity;
And the driving device is used for controlling the driving device to drive the moving cavity and the fixed cavity to be closed or separated, so that the sample is automatically compressed and automatically enters and exits the environmental chamber.
3. The automatic specimen clamping structure according to claim 1, wherein the first driving means and the second driving means are connected to a controller.
4. The automatic specimen clamping structure according to claim 2, wherein said driving means is connected to a controller.
5. The automatic specimen clamping structure according to claim 1 or 2, wherein a sealing device is further provided between the first testing chamber and the second testing chamber.
6. The automatic test sample clamping structure as claimed in claim 5, wherein the sealing device is a sealing ring, and the sealing ring is arranged on the first testing chamber or the second testing chamber;
or the sealing device comprises a first sealing element and a second sealing element, the first sealing element and the second sealing element are respectively and correspondingly arranged on the first testing cavity and the second testing cavity, and the first sealing element and the second sealing element are matched with the sealing sample; or both the first seal and the second seal are disposed on the first test chamber or the second test chamber.
7. A specimen automatic clamping structure according to claim 1, wherein when the first test chamber and the second test chamber are disposed above and below the specimen, respectively:
Before a sample is clamped, the first driving device is used for driving the first testing cavity to move upwards, and the second driving device is used for driving the second testing cavity to move along the horizontal direction, so that the first testing cavity and the second testing cavity are separated, and the second testing cavity extends out of the environment bin;
When a sample is placed in the second testing cavity, the second driving device is used for driving the second testing cavity to retract into the environment bin, and meanwhile, the first driving device is used for driving the first testing cavity to vertically move downwards, so that the first testing cavity and the second testing cavity are closed to compress the sample;
or when the first and second test chambers are disposed above and below the test specimen, respectively:
before a sample is clamped, the second driving device is used for driving the second testing cavity to move downwards, and the first driving device is used for driving the first testing cavity to move along the horizontal direction, so that the first testing cavity is separated from the second testing cavity, and the first testing cavity extends out of the environment bin;
When a sample is adsorbed to the first test cavity, the first driving device is used for driving the first test cavity to retract into the environment bin, and meanwhile, the second driving device is used for driving the second test cavity to vertically move upwards, so that the first test cavity and the second test cavity are closed to compress the sample.
8. The automatic specimen clamping structure according to claim 1, wherein when the first test chamber and the second test chamber are respectively provided on the left side and the right side of the specimen:
The first driving device and the second driving device are respectively used for correspondingly driving the first testing cavity and the second testing cavity to move relatively along the horizontal direction so as to close the first testing cavity and the second testing cavity and compress the sample;
The first driving device and the second driving device are further used for respectively and correspondingly driving the first testing cavity and the second testing cavity to move back and forth along the horizontal direction after the test of the sample is finished, so that the first testing cavity and the second testing cavity are separated.
9. The automatic sample clamping structure as claimed in claim 1 or 2, wherein the first testing chamber is connected with a negative pressure device, and the negative pressure device is used for attaching the sample placed on the first testing chamber to the surface of the first testing chamber in an adsorption manner;
Or the second test cavity is connected with a negative pressure device, and the negative pressure device is used for adsorbing and attaching the sample placed on the second test cavity to the surface of the second test cavity.
10. A gas permeation testing system, comprising:
A sealable environmental chamber;
At least one station is arranged in the environment bin, and each station is provided with a sample automatic clamping structure according to any one of claims 1-9.
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| CN201920299627.XU CN209745767U (en) | 2019-03-08 | 2019-03-08 | sample automatic clamping structure and gas permeation test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799178A (en) * | 2019-03-08 | 2019-05-24 | 济南兰光机电技术有限公司 | A kind of sample automated exchanged cutter structure and gas permeation test system |
| CN109916796A (en) * | 2019-03-08 | 2019-06-21 | 济南兰光机电技术有限公司 | Temperature control guiding device, gas pressure control device and gas permeation test system |
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2019
- 2019-03-08 CN CN201920299627.XU patent/CN209745767U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109799178A (en) * | 2019-03-08 | 2019-05-24 | 济南兰光机电技术有限公司 | A kind of sample automated exchanged cutter structure and gas permeation test system |
| CN109916796A (en) * | 2019-03-08 | 2019-06-21 | 济南兰光机电技术有限公司 | Temperature control guiding device, gas pressure control device and gas permeation test system |
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