Device for measuring water vapor permeability of plastic film

Abstract

The utility model discloses a plastic film water vapor transmission rate measuring device which comprises a water vapor transmission rate measuring instrument, a measuring area is fixedly installed in the middle of the outer surface of the upper end of the water vapor transmission rate measuring instrument, and a material pressing structure is arranged on the upper portion of the measuring area. The material pressing structure comprises two groups of hydraulic rods, two groups of fixing frames, two groups of connecting arms, two groups of fixing blocks, two groups of guide rings, two groups of guide rods, two groups of pressure sensors, an upper disc, two groups of connecting columns and two groups of material pressing rings, and the two groups of fixing frames are fixedly mounted at the upper parts of the outer surfaces of the two sides of the water vapor permeability tester. According to the device for measuring the water vapor permeability of the plastic film, provided by the utility model, the fixing efficiency of the plastic film is convenient to improve due to the arrangement of the material pressing structure, the pressure applied to the plastic film is convenient to monitor due to the arrangement of the pressure sensor, and the sealing performance of fixing the plastic film is convenient to improve due to the arrangement of the sealing ring.

Description

Technical Field

[0001] This utility model relates to the field of plastic film testing technology, specifically a device for measuring the water vapor transmission rate of plastic films. Background Technology

[0002] A water vapor transmission rate meter is used to test the water vapor permeability of plastic films, evaluate their moisture barrier effect, and ensure the sealing and shelf life of packaging materials in the food, pharmaceutical and other fields.

[0003] In the existing technology, when testing plastic film, the staff places the film in the testing area at the top of the water vapor transmission rate meter, and then uses a rotating threaded clamp to press and fix the plastic film. First, the clamping efficiency is low, and second, it is not convenient to control the amount of pressure applied to the plastic film.

[0004] Therefore, we propose a device for measuring the water vapor transmission rate of plastic films. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a device for measuring the water vapor transmission rate of plastic films. This device facilitates the pressing of plastic films, improves clamping efficiency, and allows for easy control of the pressure applied to the workpiece, effectively solving the problems in the prior art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a device for measuring the water vapor transmission rate of a plastic film, including a water vapor transmission rate measuring instrument. A measuring area is fixedly installed in the middle of the upper outer surface of the water vapor transmission rate measuring instrument. A pressing structure is provided on the upper part of the measuring area. The pressing structure includes a hydraulic rod, a fixing frame, a connecting arm, a fixing block, a guide ring, a guide rod, a pressure sensor, an upper plate, a connecting column, and a pressing ring. The number of hydraulic rods, fixing frames, connecting arms, guide rings, and guide rods are all in two sets. The two sets of fixing frames are fixedly installed on the upper part of the outer surfaces on both sides of the water vapor transmission rate measuring instrument.

[0009] Preferably, one side of the cylinder of the hydraulic rod is fixedly connected to one side of the outer surface of the fixing frame, and the two sets of connecting arms are fixedly installed on the outer surfaces of both sides of the fixing block. The lower end of the outer surface of the connecting arm away from the fixing block is fixedly connected to the upper end of the outer surface of the piston rod in the hydraulic rod.

[0010] Preferably, the guide ring is fixedly installed on the upper outer surface of the connecting arm away from the fixing block, the guide rod passes through the guide ring and is fixedly connected to the upper outer surface of the water vapor transmission rate measuring instrument, and the outer wall of the guide rod and the guide ring are slidably connected.

[0011] Preferably, the connecting column is fixedly installed between the lower outer surface of the upper plate and the upper outer surface of the pressure ring.

[0012] Preferably, the pressure sensor is fixedly installed between the middle of the upper outer surface of the upper plate and the middle of the lower outer surface of the fixing block.

[0013] Preferably, the pressing structure further includes a sealing ring, which is bonded to the lower outer surface of the pressing ring.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a device for measuring the water vapor transmission rate of plastic films, which has the following advantages:

[0016] 1. The device for measuring the water vapor transmission rate of a plastic film has a pressing structure that facilitates the improvement of the efficiency of fixing the plastic film.

[0017] 2. The device for measuring the water vapor transmission rate of a plastic film is equipped with a pressure sensor to facilitate monitoring the amount of pressure applied to the plastic film.

[0018] 3. This device for measuring the water vapor transmission rate of a plastic film, through the use of a sealing ring, facilitates improved sealing of the plastic film. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a plastic film water vapor transmission rate measuring device according to the present invention.

[0020] Figure 2 This is a schematic diagram of the pressing structure in the plastic film water vapor transmission rate measuring device of this utility model.

[0021] Figure 3 This is a partial structural diagram of the pressing structure in the plastic film water vapor transmission rate measuring device of this utility model.

[0022] Figure 4 This is a schematic diagram of the bottom structure of the fixing block and the pressing ring in the device for measuring the water vapor transmission rate of a plastic film according to this utility model.

[0023] In the figure: 1. Water vapor transmission rate meter; 2. Measurement area; 3. Pressing structure; 4. Hydraulic rod; 5. Fixing frame; 6. Connecting arm; 7. Fixing block; 8. Guide ring; 9. Guide rod; 10. Pressure sensor; 11. Upper plate; 12. Connecting column; 13. Pressing ring; 14. Sealing ring. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] This embodiment is a device for measuring the water vapor transmission rate of a plastic film.

[0026] like Figure 1-4 As shown, the device includes a water vapor transmission rate measuring instrument 1. A measuring area 2 is fixedly installed in the middle of the upper outer surface of the water vapor transmission rate measuring instrument 1. A pressing structure 3 is provided on the upper part of the measuring area 2. The pressing structure 3 includes a hydraulic rod 4, a fixing frame 5, a connecting arm 6, a fixing block 7, a guide ring 8, a guide rod 9, a pressure sensor 10, an upper plate 11, a connecting column 12, and a pressing ring 13. There are two sets of hydraulic rods 4, fixing frames 5, connecting arms 6, guide rings 8, and guide rods 9. The two sets of fixing frames 5 are fixedly installed on the upper part of the outer surfaces on both sides of the water vapor transmission rate measuring instrument 1.

[0027] One side of the cylinder of the hydraulic rod 4 is fixedly connected to the outer surface of one side of the fixed frame 5. Two sets of connecting arms 6 are fixedly installed on the outer surfaces of both sides of the fixed block 7. The lower outer surface of the connecting arm 6 away from the fixed block 7 is fixedly connected to the upper outer surface of the piston rod in the hydraulic rod 4. The guide ring 8 is fixedly installed on the upper outer surface of the connecting arm 6 away from the fixed block 7. The guide rod 9 passes through the guide ring 8 and is fixedly connected to the upper outer surface of the water vapor transmission rate measuring instrument 1. The outer wall of the guide rod 9 and the guide ring 8 are slidably connected. The connecting column 12 is fixedly installed between the lower outer surface of the upper plate 11 and the upper outer surface of the pressure ring 13. The pressure sensor 10 is fixedly installed between the middle of the upper outer surface of the upper plate 11 and the middle of the lower outer surface of the fixed block 7. The pressure structure 3 also includes a sealing ring 14, which is bonded to the lower outer surface of the pressure ring 13.

[0028] It should be noted that this utility model is a device for measuring the water vapor transmission rate of a plastic film. The water vapor transmission rate measuring instrument 1 and the measuring area 2 described in this article are both existing technologies and can be effectively understood by those skilled in the art. Specific details will not be elaborated further. During the experiment, the plastic film is covered on the upper outer surface of the measuring area 2 and fixed by the pressing structure 3. The hydraulic rod 4 drives the pressing ring 13 to descend, pressing the film. A sealing ring 14 is provided at the lower part of the pressing ring 13 to improve the sealing of the plastic film after fixation, thus improving the accuracy of the experiment. The connecting arm 6 moves up and down along the guide rod 9 via the guide ring 8, which improves the stability of the pressing ring 13's movement. A pressure sensor 10 is installed between the upper outer surface of the upper plate 11 and the lower outer surface of the fixing block 7. Both the pressure sensor 10 and the hydraulic rod 4 are externally connected to a controller. The pressure sensor 10 can monitor the pressure applied to the plastic film, making it easy to control the pressure applied to the plastic film and improving stability.

[0029] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A device for measuring the water vapor transmission rate of a plastic film, comprising a water vapor transmission rate measuring instrument (1), characterized in that: The water vapor transmission rate measuring instrument (1) has a measuring area (2) fixedly installed in the middle of the upper outer surface. The measuring area (2) has a pressing structure (3) on its upper part. The pressing structure (3) includes a hydraulic rod (4), a fixing frame (5), a connecting arm (6), a fixing block (7), a guide ring (8), a guide rod (9), a pressure sensor (10), an upper plate (11), a connecting column (12), and a pressing ring (13). The hydraulic rod (4), the fixing frame (5), the connecting arm (6), the guide ring (8), and the guide rod (9) are all in two sets. The two sets of fixing frames (5) are fixedly installed on the upper part of the outer surfaces on both sides of the water vapor transmission rate measuring instrument (1).

2. The apparatus for measuring the water vapor transmission rate of a plastic film according to claim 1, characterized in that: One side of the cylinder of the hydraulic rod (4) is fixedly connected to the outer surface of one side of the fixed frame (5). Two sets of connecting arms (6) are fixedly installed on the outer surfaces of both sides of the fixed block (7). The lower outer surface of the connecting arm (6) away from the fixed block (7) is fixedly connected to the upper outer surface of the piston rod in the hydraulic rod (4).

3. The apparatus for measuring the water vapor transmission rate of a plastic film according to claim 2, characterized in that: The guide ring (8) is fixedly installed on the upper outer surface of the connecting arm (6) away from the fixed block (7). The guide rod (9) passes through the guide ring (8) and is fixedly connected to the upper outer surface of the water vapor transmission rate measuring instrument (1). The outer wall of the guide rod (9) and the guide ring (8) are slidably connected.

4. The apparatus for measuring the water vapor transmission rate of a plastic film according to claim 3, characterized in that: The connecting column (12) is fixedly installed between the lower outer surface of the upper plate (11) and the upper outer surface of the pressure ring (13).

5. The apparatus for measuring the water vapor transmission rate of a plastic film according to claim 4, characterized in that: The pressure sensor (10) is fixedly installed between the middle of the upper outer surface of the upper plate (11) and the middle of the lower outer surface of the fixing block (7).

6. The apparatus for measuring the water vapor transmission rate of a plastic film according to claim 5, characterized in that: The pressing structure (3) also includes a sealing ring (14), which is bonded to the lower outer surface of the pressing ring (13).

Images