Film permeability detection device

Abstract

The utility model discloses a film permeability detection device. The film permeability detection device comprises a base plate, a pressing rod assembly, a first profiling mold and a second profiling mold, the pressing rod assembly, the first profiling mold and the second profiling mold are detachably mounted on the base plate, and a penetration detection cavity is formed between the first profiling mold and the second profiling mold; the pressing rod assembly is arranged above the first profiling die and the second profiling die and used for mutually pressing the first profiling die and the second profiling die. The middle part of the first profiling mold protrudes upwards to form a detection table part, and the penetration detection cavity is positioned on the detection table part; and the cross section of the detection table part is arc-shaped. The device is simple, convenient and rapid to assemble, simple to operate, high in detection efficiency, good in sealing performance, small in detection error and high in precision, reduces the influence of external factors, and can detect an uneven to-be-detected sample with a radian and a flat to-be-detected sample due to the structural arrangement of the arc-shaped detection table part.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment and instruments, in particular to a film permeability detection device. Background Art

[0002] Thin film materials are now very common polymer materials with a wide range of application areas and scenarios, such as packaging and protective films. Generally speaking, although these polymer film materials have good insulation properties, due to the relatively thin thickness of the film materials themselves, they cannot achieve absolute insulation. Under certain conditions, they can still produce a certain degree of permeability. For special applications of thin film materials, especially some environments with relatively high precision requirements, there are correspondingly higher requirements for the special permeability properties of the film materials. Therefore, it is necessary to test the permeability of film materials. Because the film materials themselves are relatively thin and easily damaged, the detection operation is not easy to perform. The existing film detection devices cannot solve the problem of permeability detection of film materials well. Either the structural design is too complicated and the equipment cost is high; or the operation is inconvenient and the detection error is large. The structure of the existing thin film detection device needs to be further improved and optimized to improve the performance and cost-effectiveness of the film detection device. Summary of the Invention

[0003] In response to the above-mentioned problems, the utility model provides a film permeability detection device, comprising a base plate, a pressure rod assembly, a first profiling mold and a second profiling mold; the pressure rod assembly, the first profiling mold and the second profiling mold are detachably mounted on the base plate, a permeation detection cavity is formed between the first profiling mold and the second profiling mold, a permeate inlet is provided on the base plate, a detection medium inlet and a detection medium outlet are provided on the second profiling mold, and the permeate inlet, the detection medium inlet and the detection medium outlet are all connected with the permeation detection cavity; the pressure rod assembly is arranged above the first profiling mold and the second profiling mold, and is used to press the first profiling mold and the second profiling mold against each other; the middle part of the first profiling mold bulges upward to form a detection platform portion, and the permeation detection cavity is located on the detection platform portion; the cross section of the detection platform portion is arc-shaped, comprising an upper convex arc segment and a lower concave arc segment.

[0004] As a further description of the present invention, an annular sealing groove is provided on the detection platform along the periphery of the penetration detection cavity, and a sealing rubber ring is provided in the annular sealing groove.

[0005] Furthermore, the curvature of the upward convex arc segment is 0-90 degrees.

[0006] Furthermore, two sides of the first profiling die are upwardly formed with folding limit portions, and the second profiling die is arranged between the two folding limit portions.

[0007] Furthermore, test film bayonet holes are provided on opposite sides of the first profiling die, and the test film bayonet holes are U-shaped grooves provided on the folding edge limiting portion.

[0008] Furthermore, a template positioning groove is provided on the base plate, and the first profiling mold is embedded in the template positioning groove.

[0009] Furthermore, the pressure rod assembly includes a mounting vertical rod, a crossbeam rod and an adjusting top rod. The mounting vertical rod and the crossbeam rod constitute a portal frame fixedly mounted on the base plate, and the adjusting top rod is threadedly mounted on the crossbeam rod.

[0010] Furthermore, a U-shaped bayonet is respectively provided on both sides of the crossbeam, and the vertical mounting rod is connected to the crossbeam through the U-shaped bayonet.

[0011] Furthermore, the pressure rod assembly further includes a set of anti-rotation limiting rods, wherein the anti-rotation limiting rods are partially embedded in the second profiling mold and pass through the second profiling mold.

[0012] Beneficial effects of the utility model:

[0013] The utility model adopts a combined clamp structure, which can achieve compression and fixation of the test film through simple assembly and operation. The test sealing structure is tight, and the assembly is simple and fast, the operation is simple, the detection efficiency is high, the sealing is good, the influence of external factors is reduced, the detection error is small and the precision is high, and it can be flexibly applied to the permeability performance detection of various film materials; on the other hand, based on the structural setting of the arc-shaped detection platform of the utility model, the film permeability detection device of the utility model can detect uneven test samples with their own curvature, and can also detect flat test samples, which solves the problem that the test samples of existing detection instruments are limited to flat samples and have poor applicability, and improves the applicable detection range of the film permeability detection device of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a diagram showing the overall structure of a film permeability detection device according to an embodiment of the present utility model;

[0015] Figure 2 This is a structural diagram of the first profiling mold according to an embodiment of the present utility model;

[0016] Figure 3 This is a structural diagram of the base plate of an embodiment of the utility model;

[0017] Figure 4 This is a structural diagram of the second profiling mold in an embodiment of the present utility model.

[0018] Figure numerals: base plate 1, first profiling mold 2, detection platform 201, second profiling mold 3, permeate detection chamber 4, permeate inlet 5, detection medium inlet 6, detection medium outlet 7, sealing rubber ring 8, folding edge limiter 9, test membrane bayonet 10, template positioning groove 11, installation vertical rod 12, cross beam rod 13, adjustment top rod 14, U-shaped bayonet 15, end slot 16, anti-rotation limit rod 17. DETAILED DESCRIPTION

[0019] Example:

[0020] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0022] As attached Figure 1-4 As shown, a film permeability detection device includes a base plate 1, a pressure rod assembly, a first profiling mold 2, and a second profiling mold 3; the pressure rod assembly, the first profiling mold 2, and the second profiling mold 3 are detachably mounted on the base plate 1, a permeation detection chamber 4 is formed between the first profiling mold 2 and the second profiling mold 3, a permeate inlet 5 is provided on the base plate 1, and a test material inlet 6 and a test material outlet 7 are provided on the second profiling mold 3, the permeate inlet 5, the test material inlet 6, and the test material outlet 7 are all connected to the permeation detection chamber 4; the pressure rod assembly is arranged above the first profiling mold 2 and the second profiling mold 3, and is used to press the first profiling mold 2 and the second profiling mold 3 against each other. The utility model adopts a combined clamp structure, which can achieve compression and fixation of the test film through simple assembly and operation. The test sealing structure is tight, with the characteristics of simple and quick assembly, simple operation, high detection efficiency, good sealing, reduced influence of external factors, small detection error, and high precision. It can be flexibly applied to the permeability performance detection of various film materials.

[0023] The main detection operation process principle of the film permeability detection device of this embodiment is as follows: after the film permeability detection device is assembled, the second profiling mold 3 is opened to place the film to be tested, and then the second profiling mold 3 is closed and compressed. At this time, the permeation detection chamber 4 is divided into two chambers by the film to be tested, one side is connected to the permeate inlet 5, and the other side is connected to the detection material inlet 6 and the detection material outlet 7. During the detection process, the permeate inlet 5 is connected to the permeate source of the test. For example, when performing water vapor permeability detection, water vapor is input from the permeate inlet 5 through the water vapor source and a constant pressure is maintained. On the other side of the film to be tested, the detection material inlet 6 is connected to the detection source. For example, in this embodiment, the detection source is a nitrogen source. During the detection process, nitrogen is continuously input through the nitrogen source and a constant speed is maintained. The detection material outlet 7 is then connected to a detection instrument. In this embodiment, the detection instrument collects the mixed gas discharged from the detection material outlet 7. When the sensor detects that the amount of water vapor reaches stability, the permeation test has reached dynamic equilibrium, and the detection instrument can calculate the permeability of the sample by testing area, test time, etc.

[0024] As a preferred embodiment, the central portion of the first profiling mold 2 in this embodiment is raised upward to form a detection platform 201, and the permeation detection chamber 4 is located on the detection platform 201. Specifically, the cross-section of the detection platform 201 is arc-shaped, including an upper convex arc segment and a lower concave arc segment. With this structural arrangement, the film permeability detection device of this embodiment can be applied to samples with a certain curvature, as well as flat samples. As long as the sample to be tested can fit the curved detection platform 201 when under pressure, can be fully unfolded and placed, and can be sealed for testing to ensure and improve test accuracy, the applicable detection range of the film permeability detection device of this embodiment is increased.

[0025] It is easy to understand that during the detection process, it is necessary to isolate the influence of external factors on the permeability detection of the test membrane as much as possible, that is, the preferred embodiment is to ensure the isolation and sealing of the penetration detection chamber 4 from the external space. To this end, in the present embodiment, an annular sealing groove is opened along the periphery of the penetration detection chamber 4 on the detection platform 201, and a sealing rubber ring belt 8 is provided in the annular sealing groove. The thickness of the sealing rubber ring belt 8 can be slightly greater than the depth of the annular sealing groove. The sealing rubber ring belt 8 after installation protrudes from the surface of the detection platform 201. When the first profiling die 2 and the second profiling die 3 are pressed against each other, the sealing rubber ring belt 8 can be squeezed to achieve a better sealing effect, and the influence of small external air on the test results. Based on the convex arc structure arrangement of the above-mentioned detection platform 201, in order to achieve the sealing of the penetration detection chamber 4, the curvature range of the convex arc segments on both sides of the detection platform 201 is between 0-90 degrees. When exceeding this range, it is not conducive to using the sealing rubber ring belt 8 of the present embodiment for sealing.

[0026] Specifically, as shown in the accompanying drawings, in this embodiment, folding limit portions 9 are formed upward on both sides of the first profiling mold 2, and the second profiling mold 3 is arranged between the two folding limit portions 9. In this way, the folding limit portions 9 on both sides can form a limit on the activity of the second profiling mold 3, so that it can better maintain relative fixation with the first profiling mold 2, and play a role in limiting positioning.

[0027] Specifically, as shown in the accompanying drawings, in this embodiment, test film retaining holes 10 are provided on opposite sides of the first profiling die 2. The test film retaining holes 10 are U-shaped grooves provided on the hem-limiting portion 9. During the placement of the test film, if the test film slides to one side, the support and restraint of the U-shaped grooves prevent further sliding, making it easier for the user to place the test film on the testing platform 201, eliminating the need for precise centering and alignment operations, thereby improving operational efficiency.

[0028] In a preferred embodiment, a template positioning groove 11 is provided on the base plate 1, and the first profiling mold 2 is embedded in the template positioning groove 11. After installation, the first profiling mold 2 is restricted by the template positioning groove 11 to ensure relative fixation with the base plate 1, thereby playing a role of limiting positioning.

[0029] As a feasible implementation, as shown in the accompanying drawings, the pressure rod assembly of this embodiment includes a mounting vertical rod 12, a crossbar 13, and an adjustable push rod 14. The mounting vertical rod 12 and the crossbar 13 form a portal fixed to the base plate 1. The adjustable push rod 14 is threaded onto the crossbar 13. The thread of the adjustable push rod 14 is specifically located above the second profiling die 3. Loosening the rod upward can reserve space for the second profiling die 3 to carry out the loading and unloading operations of the test film. After the test film is placed, the adjustable push rod 14 is tightened downward to tighten the second profiling die 3 against the first profiling die 2 to ensure the sealing of the penetrant test.

[0030] In a preferred embodiment, as shown in the accompanying drawings, in this embodiment, a U-shaped bayonet 15 is provided on each side of the crossbeam 13. The mounting vertical rod 12 and the crossbeam 13 are connected by the U-shaped bayonet 15. No fasteners are required to secure the crossbeam 13 and the mounting vertical rod 12 during assembly. For example, the U-shaped bayonet 15 in this embodiment is a stepped U-shaped bayonet 15, and the corresponding end of the mounting vertical rod 12 has an end slot 16 that matches the stepped U-shaped bayonet 15. When assembling the two, only the stepped U-shaped bayonet 15 and the end slot 16 need to be aligned, and then the crossbeam 13 can be rotated to secure the two. This reduces the need for fastener manipulation and improves assembly efficiency.

[0031] In the above embodiment, preferably, a group of anti-rotation limit rods 17 are provided on the second profiling mold 3, and the anti-rotation limit rods 17 are partially embedded in the second profiling mold 3 and pass through the second profiling mold 3. In this way, through the setting of the anti-rotation limit rods 17, on the one hand, it can play a role in preventing the crossbeam 13 from rotating and ensuring the tightening effect. On the other hand, it can play a role in sliding guidance of the second profiling mold 3, thereby improving the smoothness of the opening and closing operation of the second profiling mold 3.

[0032] The above description is only for the preferred embodiment of the present invention, which should not be construed as limiting the claims. The present invention is not limited to the above embodiment, and its specific structure is allowed to be varied. In short, all variations made within the scope of protection of the independent claims of the present invention are also within the scope of protection of the present invention.

Claims

1. A film permeability detection device, characterized in that: It includes a base plate, a pressure rod assembly, a first profiling mold and a second profiling mold; the pressure rod assembly, the first profiling mold and the second profiling mold are detachably mounted on the base plate, a permeate detection cavity is formed between the first profiling mold and the second profiling mold, a permeate inlet is provided on the base plate, a detection medium inlet and a detection medium outlet are provided on the second profiling mold, and the permeate inlet, the detection medium inlet and the detection medium outlet are all connected with the permeate detection cavity; the pressure rod assembly is arranged above the first profiling mold and the second profiling mold, and is used to press the first profiling mold and the second profiling mold against each other; the middle part of the first profiling mold bulges upward to form a detection platform part, and the permeate detection cavity is located on the detection platform part; the cross section of the detection platform part is arc-shaped, including an upper convex arc segment and a lower concave arc segment.

2. The film permeability detection device according to claim 1, characterized in that: An annular sealing groove is provided on the detection platform along the periphery of the penetration detection cavity, and a sealing rubber ring belt is provided in the annular sealing groove.

3. The film permeability detection device according to claim 2, characterized in that: The curvature of the upward convex arc segment is 0-90 degrees.

4. The film permeability detection device according to claim 1, characterized in that: The two sides of the first profiling die are upwardly formed with folding limit parts, and the second profiling die is arranged between the two folding limit parts.

5. The film permeability detection device according to claim 4, characterized in that: The first profiling die is provided with test film bayonet holes on opposite sides thereof, and the test film bayonet holes are U-shaped grooves provided on the folding edge limiting portion.

6. The film permeability detection device according to claim 1, characterized in that: A template positioning groove is provided on the base plate, and the first profiling mold is embedded in the template positioning groove.

7. The film permeability detection device according to claim 1, characterized in that: The pressure rod assembly includes a mounting vertical rod, a crossbeam rod and an adjusting top rod. The mounting vertical rod and the crossbeam rod constitute a portal frame fixedly mounted on the base plate, and the adjusting top rod is threadedly mounted on the crossbeam rod.

8. The film permeability detection device according to claim 7, characterized in that: A U-shaped bayonet is respectively provided on both sides of the crossbeam, and the mounting vertical rod is connected to the crossbeam through the U-shaped bayonet.

9. The film permeability detection device according to claim 8, characterized in that: The pressure rod assembly further includes a set of anti-rotation limiting rods, wherein the anti-rotation limiting rods are partially embedded in the second profiling mold and pass through the second profiling mold.

Images