Diaphragm air permeability value testing device

Abstract

The utility model provides a diaphragm air permeability value testing device which comprises a rack, an unwinding mechanism, a testing mechanism, an air supply mechanism and a winding mechanism, the unwinding mechanism is arranged on the rack and used for unwinding and conveying a diaphragm, the testing mechanism comprises testing clamping assemblies and a flow testing assembly, the testing clamping assemblies are arranged on the two surfaces of the diaphragm, and the flow testing assembly is arranged on the two surfaces of the diaphragm. The flow testing assembly is used for clamping the diaphragm, can be connected with the diaphragm in a sealed mode and is used for achieving circulation of airflow from one surface to the other surface in a clamped area of the diaphragm, and the flow testing assembly is used for monitoring the flow of the airflow passing through the flow testing assembly so that the air permeability of the diaphragm can be tested. The air supply mechanism is communicated with the testing mechanism and is used for providing the air flow for the testing mechanism, the winding mechanism is arranged on the rack and is used for winding and forming the diaphragm, the testing mechanism is arranged between the unwinding mechanism and the winding mechanism, and the testing efficiency and accuracy of the air permeability of the diaphragm can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of membrane air permeability detection, and more specifically to a membrane air permeability testing device. Background Art

[0002] The air permeability value is an important indicator of diaphragm products, which reflects the ion conductivity of the diaphragm to a certain extent. Therefore, the air permeability value of diaphragm products needs to be tested before shipment. Usually, the air permeability value detection of diaphragm products includes steps such as sampling, sample loading test, recording and data entry. In traditional tests, the steps of sampling, sampling, recording and data entry need to be performed manually. First, the diaphragm is manually pulled and unrolled, and then the sample is manually cut, and then the cut sample is manually placed on the air permeability tester for testing, and the data is recorded. This testing method is inefficient, and manual cutting and sampling also has the problem of uneven sampling, and the diaphragm needs to be destroyed during the test, causing losses.

[0003] Therefore, there is an urgent need for a permeability value testing device that can improve testing efficiency and accuracy. Utility Model Content

[0004] The present application provides a membrane air permeability testing device, which can improve the testing efficiency and accuracy of membrane air permeability.

[0005] The present application provides a membrane air permeability test device, comprising:

[0006] frame;

[0007] An unwinding mechanism, the unwinding mechanism is arranged on the frame and is used for unwinding and conveying the diaphragm;

[0008] A test mechanism, the test mechanism comprising a test clamping assembly and a flow test assembly, the test clamping assembly is used to clamp the diaphragm and can be sealed and connected to the diaphragm, the test clamping assembly has a ventilation structure, the ventilation structure is used to allow airflow passing through the clamped area on the diaphragm to circulate, and the flow test assembly is used to monitor the flow parameters of the airflow passing through the clamped area on the diaphragm;

[0009] an air supply mechanism, the air supply mechanism being in communication with the testing mechanism and being used for providing the air flow to the testing mechanism;

[0010] and a winding mechanism, the winding mechanism being arranged on the frame and used for winding and forming the diaphragm;

[0011] Wherein, the testing mechanism is arranged between the unwinding mechanism and the rewinding mechanism.

[0012] In an optional embodiment, the test clamp assembly includes a first test clamp assembly and a second test clamp assembly, the first test clamp assembly and the second test clamp assembly are respectively arranged on two surfaces of the diaphragm, the ventilation structure includes a first gas flow channel and a second gas flow channel, the first gas flow channel is connected to the gas supply mechanism, and the first gas flow channel can be connected to the second gas flow channel so that the airflow can flow through the first gas flow channel, the diaphragm and the second gas flow channel in sequence; the flow test assembly is connected to the second gas flow channel to monitor the flow parameters of the airflow passing through the diaphragm.

[0013] In an optional embodiment, a first seal and a second seal are respectively disposed on opposite sides of the first test clamp assembly and the second test clamp assembly to form a seal between the first test clamp assembly, the second test clamp assembly and the diaphragm.

[0014] In an optional embodiment, the test mechanism further includes a first moving mechanism, and the first moving mechanism can drive the first test clamping assembly to move relatively close to or away from the second test clamping assembly to clamp or release the diaphragm.

[0015] In an optional embodiment, the diaphragm has a transverse direction, and the second test clamping assembly is provided with a plurality of the second gas circulation channels along the transverse direction. The testing mechanism further comprises a second moving mechanism, and the second moving mechanism is used to drive the first test clamping assembly to move along the transverse direction so that the first gas circulation channel of the first test clamping assembly is connected to one of the second gas circulation channels, so as to test the permeability values ​​of a plurality of groups of the diaphragms along the transverse direction of the diaphragm.

[0016] In an optional embodiment, the second moving mechanism includes a moving track and a driving assembly, the moving track is arranged on the frame and along the transverse direction, and the driving assembly drives the first test clamping assembly to move along the moving track.

[0017] In an optional embodiment, the unwinding mechanism includes an unwinding roller and an unwinding guide roller, which are arranged in parallel on the frame, the unwinding roller is used to unwind and convey the diaphragm, and the unwinding guide roller is used to guide the diaphragm to the winding mechanism.

[0018] In an optional embodiment, the winding mechanism includes a winding roller and a winding guide roller, and the winding roller and the winding guide roller are arranged in parallel on the frame and in parallel with the unwinding roller and the unwinding guide roller. The winding guide roller is used to guide the diaphragm guided by the unwinding guide roller to the winding roller, and the winding roller is used to roll the diaphragm into shape.

[0019] In an optional embodiment, a display component is further included. The display component is disposed on the rack, the display component is electrically connected to the flow test component, and the display component includes a display module that realizes display and / or input functions.

[0020] In an optional embodiment, the gas supply mechanism includes a gas storage component, a gas supply valve and a gas supply pipe, and the two ends of the gas supply pipe are respectively connected to the gas storage component and the first gas circulation channel to form a gas supply channel, and the gas supply valve is arranged on the gas supply pipe to adjust the air flow rate and / or on-off of the gas supply channel.

[0021] According to the membrane air permeability test device in the above embodiment, it includes a frame, an unwinding mechanism, a testing mechanism, an air supply mechanism and a winding mechanism. By setting the unwinding mechanism and the winding mechanism to unwind and wind the membrane, the membrane can be automatically wound and released, and then the testing mechanism set between the unwinding mechanism and the winding mechanism is used to perform air permeability detection, which simplifies the test process and improves the efficiency of the test. Since the membrane is wound and released by the unwinding mechanism and the winding mechanism, it is different from the traditional testing method and does not need to be sheared and sampled on the membrane, which can achieve non-destructive and online testing of the entire roll of membrane, reducing the waste of the membrane; at the same time, there is no need for shearing sampling, which avoids the deformation of the membrane due to shearing, thereby avoiding the problem of uneven membrane sampling and improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a membrane air permeability test device in an embodiment;

[0023] Figure 2 It is a schematic diagram of an orthographic projection of a membrane air permeability test device on a frame in one embodiment;

[0024] Figure 3 A top view of the structure of a membrane air permeability test device in an embodiment;

[0025] Figure 4 is a schematic structural diagram of a first test clamping assembly in an embodiment;

[0026] Wherein: 100, frame; 200, unwinding mechanism; 210, unwinding roller; 220, unwinding guide roller; 300, testing mechanism; 310, test clamping assembly; 311, first test clamping assembly; 3111, first gas circulation channel; 312, second test clamping assembly; 3121, second gas circulation channel; 320, flow test assembly; 330, first moving mechanism; 340, second moving mechanism; 341, moving track; 342, driving assembly; 400, winding mechanism; 410, winding roller; 420, winding guide roller; 500, air supply mechanism; 600, display assembly. DETAILED DESCRIPTION

[0027] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0028] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0029] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0030] refer to Figure 1-4 The present application provides a membrane air permeability test device, comprising a frame 100, a reeling mechanism 200, a testing mechanism 300, an air supply mechanism 500 and a reeling mechanism 400, wherein the reeling mechanism 200 is arranged on the frame 100 for reeling and conveying the membrane, the testing mechanism 300 comprises a test clamping assembly 310 and a flow test assembly 320, the test clamping assembly 310 is used for clamping the membrane and can be sealed with the membrane, the test clamping assembly 310 has a ventilation structure, and the ventilation structure The structure is used for allowing air flow to flow through the clamped area on the diaphragm, and the flow testing assembly 320 is used to monitor the flow parameters of the air flow passing through the clamped area on the diaphragm so as to test the air permeability value of the diaphragm. The air supply mechanism 500 is connected to the testing mechanism 300 to provide the air flow to the testing mechanism 300. The winding mechanism 400 is arranged on the frame 100 to wind and form the diaphragm, and the testing mechanism 300 is arranged between the unwinding mechanism 200 and the winding mechanism 400.

[0031] It should be further explained that the above-mentioned unwinding mechanism 200 and winding mechanism 400 refers to the middle of the diaphragm unwinding and winding movement direction, and can also be the middle of the axial direction formed by the middle line of the rolled diaphragm when the diaphragm is unwinding and winding.

[0032] The traditional method of testing the air permeability of diaphragms is to manually cut samples and then test the cut samples using an air permeability tester. The test efficiency is low and it causes certain damage to the diaphragm.

[0033] However, the present application unwinds and rewinds the diaphragm by setting up an unwinding mechanism 200 and a rewinding mechanism 400, and then uses a testing mechanism 300 arranged between the unwinding mechanism 200 and the rewinding mechanism 400 to perform air permeability detection. This not only completes the air permeability test of the diaphragm, but also enables non-destructive, online testing of the entire roll of diaphragm, which greatly simplifies the testing process, improves the detection efficiency, and reduces the waste of diaphragms.

[0034] The test clamp assembly 310 includes a first test clamp assembly 311 and a second test clamp assembly 312, and the first test clamp assembly 311 and the second test clamp assembly 312 are respectively arranged on the two surfaces of the diaphragm, and the ventilation structure includes a first gas circulation channel 3111 and a second gas circulation channel 3121, and the first gas circulation channel 3111 is connected to the gas supply mechanism 500, and the first gas circulation channel 3111 can be connected to the second gas circulation channel 3121 so that the airflow can flow through the first gas circulation channel 3111, the diaphragm and the second gas circulation channel 3121 in sequence; the flow test assembly 320 is connected to the second gas circulation channel 3121 to monitor the flow parameters of the airflow passing through the diaphragm so as to test the air permeability of the diaphragm.

[0035] Furthermore, the flow test component 320 is connected to the second gas circulation channel 3121 through an air flow duct. The flow test component 320 also has a display function. It is arranged on the rack 100 and can display the flow test result through its own display screen.

[0036] It should be noted that the air permeability of the diaphragm refers to the amount of gas passing through a unit area of ​​material per unit time. Since there are multiple micropores on the surface of the diaphragm, air can pass through. Therefore, the airflow is released on one surface of the diaphragm so that the airflow passes along the micropores. The airflow rate through the micropores is tested, and the air permeability of the diaphragm can be tested. Therefore, a gas flow tester (or flow meter) is set on the surface of the diaphragm after the airflow passes along the flow direction of the airflow to achieve the airflow rate test through the micropores.

[0037] Since the first test clamp assembly 311 and the second test clamp assembly 312 are respectively arranged on the two surfaces of the diaphragm and are arranged opposite to each other, in order to make the test result more accurate, the first test clamp assembly 311 and the second test clamp assembly 312 should be in close contact with the diaphragm to ensure that there is no gap between the first test clamp assembly 311, the second test clamp assembly 312 and the diaphragm, so that the airflow passing through the first gas flow channel 3111 can flow along the micropores to the second gas flow channel 3121. Therefore, the first and second seals are respectively provided on the opposite sides of the first test clamp assembly 311 and the second test clamp assembly 312 to form a seal between the first test clamp assembly 311, the second test clamp assembly 312 and the diaphragm.

[0038] Furthermore, the first seal and the second seal are made of elastic sealing materials, which can ensure a seal between the first test clamp assembly 311, the second test clamp assembly 312 and the diaphragm without damaging the diaphragm, thereby avoiding secondary damage to the diaphragm and causing waste.

[0039] For more convenient operation, the testing mechanism 300 further includes a first moving mechanism 330 , which can drive the first testing clamping assembly 311 to move relatively close to or away from the second testing clamping assembly 312 to clamp or release the diaphragm.

[0040] Furthermore, the first moving mechanism 330 includes a cylinder, which is used as a power source to drive the first test clamping assembly 311 to move, thereby driving the two to move closer to or farther from each other according to the test process. After the test point is determined, the first test clamping assembly 311 is driven to move closer to the second test clamping assembly until the diaphragm is clamped and a seal is formed between the diaphragm, and then the air supply mechanism 500 is used to provide air flow to complete the air permeability test of the test point. After the test is completed, the two are driven away from each other to release the diaphragm.

[0041] In other embodiments, the first moving mechanism 330 can also synchronously drive the first test clamping assembly 311 and the second test clamping assembly 312 to move closer to or farther from each other, thereby completing the clamping or releasing of the diaphragm. Of course, the second test clamping assembly can also be driven to move.

[0042] In order to improve the accuracy of the test, it is necessary to set a plurality of test points on the entire diaphragm. Since the diaphragm has a lateral direction and a traveling direction from the unwinding mechanism 200 to the rewinding mechanism 400, the lateral direction and the traveling direction are perpendicular to each other. Figure 2The direction indicated by the middle arrow is the traveling direction of the membrane when the unwinding mechanism 200 is unwound and transported to the rewinding mechanism 400, and the direction perpendicular to the paper is the horizontal direction. The above-mentioned test points can be arranged along the horizontal direction and the traveling direction, so it is necessary to move and switch the test clamping assembly 310 in the test mechanism 300 relative to the membrane in the horizontal direction or the traveling direction. Since the membrane can move along the traveling direction under the action of the unwinding mechanism 200 and the rewinding mechanism 400, it is only necessary to drive the first test clamping assembly 311 and the second test clamping assembly 312 to be relatively close to and away from each other, so that the test of different test points in the traveling direction can be completed. For different test points in the lateral direction of the diaphragm, the test mechanism 300 also includes a second moving mechanism 340, and the second moving mechanism 340 is used to drive the second test clamping assembly 312 to move along the lateral direction, so that the first gas flow channel 3111 of the first test clamping assembly 311 and one of the second gas flow channels 3121 are connected to each other, thereby realizing the test of different test points in the lateral direction, so as to complete the permeability test of multiple test points in the lateral and traveling directions, improve the accuracy of the test, and also determine the uniformity of the permeability of the diaphragm in all directions.

[0043] Furthermore, the second moving mechanism 340 includes a moving rail 341 and a driving assembly 342, wherein the moving rail 341 is disposed on the frame 100 and arranged along the horizontal direction, and the driving assembly 342 drives the first test clamping assembly 311 to move along the moving rail 341. The driving assembly 342 includes a driving cylinder, through which the movement of the test clamping assembly 310 along the moving rail 341 is realized.

[0044] Based on the lateral movement of the test clamping assembly 310, and the movement of the first test clamping assembly 311 and the second test clamping assembly 312 approaching or moving away from each other, all are linear motion. In other embodiments, the driving assembly 342 and the first moving mechanism 330 can also be linear motors, which provide driving force for linear motion, or convert rotary motion into linear motion through a combination of a connecting rod mechanism and a rotary motor. The method of converting rotary motion into linear motion through a combination of a connecting rod mechanism and a rotary motor belongs to the prior art known to the public and will not be described in detail here.

[0045] The unwinding mechanism 200 includes an unwinding roller 210 and an unwinding guide roller 220 , which are arranged in parallel on the frame 100 . The unwinding roller 210 is used to unwind and convey the diaphragm, and the unwinding guide roller 220 is used to guide the diaphragm to the winding mechanism 400 .

[0046] Furthermore, the unwinding roller 210 is an inflatable shaft for sleeve-mounting an unwinding core, and a diaphragm is provided on the unwinding core. The unwinding guide roller 220 is a guide roller with a smooth surface, and the number of the unwinding guide rollers 220 can be set to at least one according to demand, such as two or three, and multiple unwinding guide rollers 220 are arranged in parallel with each other.

[0047] The winding mechanism 400 includes a winding roller 410 and a winding guide roller 420, and the winding roller 410 and the winding guide roller 420 are arranged in parallel on the frame 100, and are arranged in parallel with the unwinding roller 210 and the unwinding guide roller 220. The winding guide roller 420 is used to guide the diaphragm guided by the unwinding guide roller 220 to the winding roller 410, and the winding roller 410 is used to roll the diaphragm into shape.

[0048] Furthermore, the winding roller 410 is also an inflatable shaft, which is used to cover the winding core, and can rewind the diaphragm that is rolled and transported by the unwinding mechanism 200. The winding guide roller 420 is a guide roller with a smooth surface, and the number of the winding guide rollers 420 can be set to at least one according to needs, such as two or three, and multiple winding guide rollers 420 are arranged parallel to each other.

[0049] In order to facilitate operation and viewing of test data, a display component 600 and a control component (not shown in the figure) are also included. The display component 600 and the control component are arranged on the rack 100, and the display component 600 is electrically connected to the control component, and the control component is electrically connected to the flow test component 320. The display component 600 includes a display module that realizes display and / or input functions. The flow test component 320 transmits the test data to the control component, and the control component is connected to the display component 600, and the data (including the number of acquisitions and the acquisition data, etc.) is displayed through its display module for the tester to view and analyze.

[0050] Furthermore, the display module can also set the winding speed and the sampling interval.

[0051] The gas supply mechanism 500 includes a gas storage component, a gas supply valve and a gas supply pipeline. The two ends of the gas supply pipeline are respectively connected to the gas storage component and the first gas circulation channel 3111 to form a gas supply channel. The gas supply valve is arranged on the gas supply pipeline to adjust the air flow rate and / or on-off (opening and closing) of the gas supply channel.

[0052] Furthermore, the control component is connected to the air supply valve, and the flow rate is adjusted or the on / off command of the air supply valve is input through the input function of the display module, and the control component controls the air supply valve to make a corresponding response.

[0053] In order to facilitate the analysis and storage of test data for subsequent viewing, the above-mentioned membrane permeability test device can also be connected to a computer to realize data recording, analysis and export through the computer.

[0054] Specifically, when testing the diaphragm sample, the unwinding core wound with the diaphragm is placed on the unwinding roller 210, so that the diaphragm passes through the unwinding guide roller 220, the test clamping assembly 310, the winding guide roller 420 and the winding roller 410 from the unwinding roller 210 in sequence, and is finally wound on the winding core.

[0055] By setting the sampling interval, the test clamping assembly 310 can clamp the membrane for a single test after the set interval. During the test, the reeling and unreeling are suspended, and the computer automatically records the data collected by the test device. After the unreeling is completed, the test is completed. Through the above-mentioned test device, non-destructive and automated membrane permeability value detection can be achieved, and the test efficiency is increased by more than 3 times.

[0056] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. A membrane air permeability test device, characterized in that: include: frame; An unwinding mechanism, the unwinding mechanism is arranged on the frame and is used for unwinding and conveying the diaphragm; A test mechanism, the test mechanism comprising a test clamping assembly and a flow test assembly, the test clamping assembly is used to clamp the diaphragm and can be sealed and connected to the diaphragm, the test clamping assembly has a ventilation structure, the ventilation structure is used to allow airflow passing through the clamped area on the diaphragm to circulate, and the flow test assembly is used to monitor the flow parameters of the airflow passing through the clamped area on the diaphragm; an air supply mechanism, the air supply mechanism being in communication with the testing mechanism and being used for providing the air flow to the testing mechanism; and a winding mechanism, the winding mechanism being arranged on the frame and used for winding and forming the diaphragm; Wherein, the testing mechanism is arranged between the unwinding mechanism and the rewinding mechanism.

2. The membrane air permeability test device according to claim 1, characterized in that: The test clamp assembly includes a first test clamp assembly and a second test clamp assembly, the first test clamp assembly and the second test clamp assembly are respectively arranged on two surfaces of the diaphragm, the ventilation structure includes a first gas flow channel and a second gas flow channel, the first gas flow channel is connected to the gas supply mechanism, and the first gas flow channel can be connected to the second gas flow channel so that the airflow can flow through the first gas flow channel, the diaphragm and the second gas flow channel in sequence; the flow test assembly is connected to the second gas flow channel to monitor the flow parameters of the airflow passing through the diaphragm.

3. The membrane air permeability test device according to claim 2, characterized in that: A first seal and a second seal are respectively disposed on opposite sides of the first test clamp assembly and the second test clamp assembly to form a seal between the first test clamp assembly, the second test clamp assembly and the diaphragm.

4. The membrane air permeability test device according to claim 2 or 3, characterized in that: The testing mechanism further includes a first moving mechanism, which can drive the first testing clamping assembly to move relatively close to or away from the second testing clamping assembly to clamp or release the diaphragm.

5. The membrane air permeability test device according to claim 4, characterized in that: The diaphragm has a transverse direction, and the second test clamping assembly is provided with a plurality of the second gas circulation channels along the transverse direction. The testing mechanism further comprises a second moving mechanism, and the second moving mechanism is used for driving the first test clamping assembly to move along the transverse direction so that the first gas circulation channel of the first test clamping assembly and one of the second gas circulation channels are connected to each other, so as to test the permeability values ​​of a plurality of groups of the diaphragms along the transverse direction of the diaphragm.

6. The membrane air permeability test device according to claim 5, characterized in that: The second moving mechanism includes a moving track and a driving assembly. The moving track is arranged on the frame and along the transverse direction. The driving assembly drives the first test clamping assembly to move along the moving track.

7. The membrane air permeability test device according to claim 1, characterized in that: The unwinding mechanism comprises an unwinding roller and an unwinding guide roller, wherein the unwinding roller and the unwinding guide roller are arranged in parallel on the frame, the unwinding roller is used for unwinding and conveying the diaphragm, and the unwinding guide roller is used for guiding the diaphragm to the rewinding mechanism.

8. The membrane air permeability test device according to claim 7, characterized in that: The winding mechanism includes a winding roller and a winding guide roller, which are arranged in parallel on the frame and in parallel with the unwinding roller and the unwinding guide roller. The winding guide roller is used to guide the diaphragm guided by the unwinding guide roller to the winding roller, and the winding roller is used to roll the diaphragm into shape.

9. The membrane air permeability test device according to claim 1, characterized in that: It also includes a display component, which is arranged on the frame, electrically connected to the flow test component, and includes a display module that realizes display and / or input functions.

10. The membrane air permeability test device according to claim 2, characterized in that: The gas supply mechanism includes a gas storage component, a gas supply valve and a gas supply pipeline. The two ends of the gas supply pipeline are respectively connected to the gas storage component and the first gas circulation channel to form a gas supply channel. The gas supply valve is arranged on the gas supply pipeline to adjust the air flow rate and / or on-off of the gas supply channel.

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