Mechanical tester for stretched breathable film

Abstract

The invention provides a mechanical tester for a stretched breathable film, and relates to the technical field of pressure resistance detection sensors, the mechanical tester comprises a mechanical sensor, the mechanical sensor comprises a main pipe body, a circuit board, a packaging cover, a gas guide piece, a temperature detection cap and a humidity detection cap; the detection machine body comprises a bottom plate, a lifting assembly and an environment simulation box; a lifting assembly is vertically arranged on one side of the surface of the bottom plate, a vertically-arranged mechanical sensor is installed on the outer wall of the lifting assembly, an environment simulation box is installed on the surface of the bottom plate in a sliding mode, the environment simulation box is provided with two testing cavities, and the two testing cavities are the standard cavity and the steam cavity respectively; and the display host is connected with the circuit board through a wire. The mechanical sensor can stably collect pressure signals and can also collect environment temperature and humidity information, and the pressure detection precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pressure resistance detection sensors, and in particular to a mechanical tester for stretched breathable membranes. Background Art

[0002] Membrane mechanical testers are widely used in the medical, environmental, and industrial fields. Their core pressure sensors typically consist of a pressure-sensitive element (such as a piezoresistive, piezoelectric, or capacitive element), a signal processing unit, a support and sealing structure, an electrical interface, and a protective housing. The pressure-sensitive element converts external pressure into an electrical signal through its physical properties (such as changes in resistance or capacitance). The signal processing unit amplifies, filters, and conditions the raw electrical signal to improve measurement accuracy and output a standardized signal. The support and sealing structure ensures the mechanical stability of the sensitive element and isolates it from environmental interference, while the housing and interface provide physical protection and system connectivity.

[0003] However, the tester in the prior art has the following defects:

[0004] 1. Traditional pressure sensors are often limited to a single working condition (such as a room temperature dry environment) during pressure resistance testing and lack the ability to simulate complex working conditions such as steam environments. This results in a disconnect between the test results and actual application scenarios, and the measurement accuracy needs to be improved.

[0005] 2. The pressure resistance of the breathable membrane is directly affected by environmental parameters such as temperature and humidity. However, the existing device does not integrate the simultaneous temperature and humidity monitoring function, and it is impossible to establish a pressure-temperature and humidity correlation model, which restricts the comprehensiveness of performance evaluation. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the invention provides a mechanical tester for breathable membranes after stretching, which solves the problems mentioned in the background technology.

[0007] To achieve the above objectives, the invention is implemented through the following technical solutions:

[0008] A post-stretch breathable membrane mechanical tester includes a mechanical sensor, which includes a main body, a circuit board, a packaging cover, an air guide, a temperature detection cap, and a humidity detection cap. The bottom end of the main body is an open structure, and a fixing ring is provided at the top of the main body. The bottom of the fixing ring is a mounting cavity. A pressure core column is fitly embedded in the mounting cavity. The bottom surface of the pressure core column is a force-bearing surface. Four mounting screw holes distributed in an annular array are provided inside the pressure core column. A fixing hole is provided at a position opposite to the mounting screw hole and the fixing ring. The input end of the circuit board is connected to the pressure core column via a wire. The circuit board is placed in the packaging cover, and the packaging cover is covered on the main body. Two sets of mounting screw holes located on the same center line are fixed to the two sets of fixing holes by screws.

[0009] The air guide piece passes through the other two sets of mounting screw holes and the fixing holes from bottom to top. The top and bottom ends of the air guide piece are provided with through-hole structures. The bottom of the air guide piece is assembled and connected to the pressure probe. The air guide piece is used to apply force to the pressure surface of the pressure core column and introduce ambient gas.

[0010] A temperature detection cap is mounted on a top end of the air guide and stops at the top surface of the fixing ring, and is connected to the circuit board via a wire; the temperature detection cap is used to stop and position one end of the air guide and detect the ambient gas temperature;

[0011] The humidity detection cap is installed on the other top end of the air guide and stops at the top surface of the fixing ring. It is connected to the circuit board through a wire. The temperature detection cap is used to stop and position the other end of the air guide and detect the humidity of the ambient gas.

[0012] The testing body includes a base plate, a lifting assembly, and an environmental simulation chamber; the lifting assembly is vertically provided on one side of the base plate, and a vertically arranged mechanical sensor is installed on the outer wall of the lifting assembly. The environmental simulation chamber is slidably installed on the surface of the base plate, and the environmental simulation chamber has two test chambers, namely a standard chamber and a steam chamber;

[0013] The display host is connected to the circuit board through wires.

[0014] Furthermore, the air guide member includes a first air guide tube, a second air guide tube, and a stop frame; the first air guide tube is vertically provided at one end of the stop frame, and the second air guide tube is vertically provided at the other end; the first air guide tube, the second air guide tube and the stop frame are U-shaped, and the stop frame stops against the force-bearing surface;

[0015] The top ends of the first air guide tube and the second air guide tube are both provided with a threaded structure; when the air guide member is inserted, the threaded sections of the first air guide tube and the second air guide tube are both placed above the fixing ring.

[0016] Furthermore, the stop frame includes a circular pressure plate, a side bracket and an assembly seat. The circular pressure plate is concentrically fitted in the middle of the force-bearing surface. Side brackets are symmetrically provided on both sides of the circular pressure plate. The outer ends of the two groups of side brackets are respectively connected to the first air duct and the second air duct. An assembly seat is provided at the center of the bottom surface of the circular pressure plate; a pressure probe is screwed onto the bottom of the assembly seat.

[0017] Furthermore, a docking tube is vertically slidably mounted on the outer wall of the main body, a first vertical slot is symmetrically provided on the outer wall of the main body, a second vertical slot is provided at a position opposite to the first vertical slot of the packaging cover, and a slider is provided on the inner wall of the docking tube; when not testing, the docking tube is placed outside the pressure probe to enclose and protect the pressure probe; during testing, the docking tube is docked to the environmental simulation box to avoid gas leakage and allow the pressure probe to be extended for testing.

[0018] Furthermore, the temperature detection cap includes a first cap body, the first cap body is screwed onto the top end of the first air duct and is attached to the top surface of the fixing ring, a first partition plate is provided at the top end of the interior of the first cap body, the bottom of the first partition plate is a detection cavity, a temperature probe is installed inside the detection cavity, a first air guide hole distributed in an annular array is opened inside the first partition plate, a first blocking fan is rotatably installed on the top surface of the first partition plate, a first motor that drives the first blocking fan to rotate is installed on the top of the first partition plate, and a first fan impeller is installed at the top end of the first cap body;

[0019] When the tester is testing, the first blocking fan blocks the first air guide hole; when the tester is not testing, the first blocking fan rotates and staggers to expose the first air guide hole, and the first fan impeller blows out the gas in the test cavity downward to reset the temperature probe parameters.

[0020] Furthermore, the humidity detection cap includes a second cap body, which is screwed onto the top of the second air duct and fits against the top surface of the fixing ring. A second partition plate is provided at the top of the interior of the second cap body, and a detection cavity is provided at the bottom of the second partition plate. A humidity probe is installed inside the detection cavity.

[0021] The second partition plate has second air guide holes distributed in an annular array inside, a second blocking fan is rotatably mounted on the top surface of the second partition plate, a second motor is mounted on the top of the second partition plate to drive the second blocking fan to rotate, the top of the second partition plate is filled with moisture-absorbing particles, and a first fan impeller is mounted on the top of the second cap body;

[0022] When the tester is testing, the second blocking fan blocks the second air guide hole; when the tester is not testing, the second blocking fan rotates and staggers to expose the second air guide hole, and the first fan impeller draws out the gas in the test chamber to reset the humidity probe parameters.

[0023] Furthermore, a clamping hole is provided inside the circuit board, a clamping ring is provided on the inner wall of the packaging cover, and a clamping column is symmetrically provided on the bottom surface of the clamping ring, and the clamping column is inserted into the clamping hole.

[0024] Furthermore, the lifting assembly includes a back plate, a vertical groove is opened inside the back plate, a vertically arranged first screw is installed inside the vertical groove, a vertical adjustment block is slidably installed inside the vertical groove and is threadedly mounted on the first screw, a slot is opened on the outer side of the vertical adjustment block, and an insert block is provided on the back of the packaging cover, the insert block is inserted into the slot and the two are positioned by bolts.

[0025] Furthermore, the environmental simulation box includes a main box body, a horizontal adjustment block is provided on the bottom surface of the main box body, a horizontal groove is provided on the surface of the bottom plate, a second screw is installed inside the horizontal groove, the horizontal adjustment block is slidably embedded in the horizontal groove and is threadedly sleeved on the second screw;

[0026] The main box body includes an upper box body and a lower box body, the upper box body is buckled on the top of the lower box body, the surface of the upper box body is provided with two sets of operation ports, the inner top surface of the upper box body is provided with a first upper pressure cover and a second upper pressure cover at positions opposite to the operation ports, and the inner tops of the first upper pressure cover and the second upper pressure cover are both provided with a blocking assembly; the interior of the second lower pressure cover is provided with a steam nozzle;

[0027] The interior of the lower box body is equipped with a first lower pressure cover and a second lower pressure cover. The first lower pressure cover and the second lower pressure cover are arranged on the surface of the floating plate. Both ends of the floating plate are slidably placed in the lower box body and a third screw is installed at the sliding connection.

[0028] When the main box is being tested, the upper box and the lower box cover both sides of a sample film material, the first upper pressure cover and the first lower pressure cover are clamped on one area of ​​the film material to form a standard cavity, and the second upper pressure cover and the second lower pressure cover are clamped on another area of ​​the film material to form a steam cavity.

[0029] Furthermore, the blocking assembly includes two groups of blocking plates, which are symmetrically arranged at the bottom of the operating port. The blocking plates are semicircular, and the outer ends of the top surfaces of the blocking plates are slidably installed on the top surface of the upper box body. The outer ends of the bottom surfaces of the blocking plates are connected to the driving rod, which is arranged horizontally and the outer ends are vertically fixedly connected to the first upper pressure cover or the second upper pressure cover.

[0030] The invention provides a mechanical tester for stretched breathable membranes. Compared with the existing technology, it has the following advantages:

[0031] 1. The pressure core column is fixed by two sets of screws, and the remaining two screw holes are used as the air guide insertion area, which simultaneously realizes the positioning of the air guide component and the auxiliary positioning of the pressure core column, reduces the number of fasteners, and significantly simplifies the assembly process.

[0032] 2. The air guide serves as a screw-on interface for the pressure probe, supporting quick replacement of probes of different specifications, improving detection flexibility and equipment adaptability.

[0033] 3. During the pressure application process of the pressure probe, the air guide acts as a force transmission transfer component to evenly distribute the load to the stress-bearing surface of the pressure core column, avoiding local stress concentration and ensuring the reliability of the test data.

[0034] 4. A gas flow channel is formed inside the gas guide, and the temperature / humidity detection cap is used to collect environmental temperature and humidity data (such as standard cavity and steam cavity) in real time, and a pressure-temperature and humidity correlation model is established to improve detection accuracy.

[0035] 5. The temperature / humidity detection cap constrains the air guide to float only upwards, preventing downward displacement from interfering with the measurement and ensuring the contact stability of the sensor.

[0036] 6. The air guide collects temperature and humidity as the calibration benchmark for the basic pressure resistance performance of the membrane material in the standard cavity; the air guide can monitor the high humidity and high temperature environmental data of the steam cavity in real time, and combine it with the puncture strength test to simultaneously evaluate the pressure resistance and air permeability of the breathable membrane.

[0037] 7. Standard chamber and steam chamber testing are carried out continuously, eliminating the traditional multi-process turnover errors and improving the consistency and efficiency of the results. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 The invention shows a schematic structural diagram of a mechanical testing instrument for stretched breathable membranes;

[0040] Figure 2 Shows a schematic diagram of the internal cross-sectional structure of the invented mechanical sensor;

[0041] Figure 3 It shows a schematic diagram of the docking structure of the packaging cover and the vertical adjustment block of the invention;

[0042] Figure 4 Shown Figure 2 A schematic diagram of the enlarged structure at point A;

[0043] Figure 5 Shows a schematic structural diagram of the main body and packaging cover of the invention;

[0044] Figure 6 Shows a schematic diagram of the butt-jointed pipe structure of the invention;

[0045] Figure 7 Shows a schematic diagram of the structure of the air guide member of the invention;

[0046] Figure 8 Shows a schematic diagram of the temperature detection cap structure of the invention;

[0047] Figure 9 It shows a schematic diagram of the docking structure of the first partition plate and the first blocking fan of the invention;

[0048] Figure 10 Shows a schematic diagram of the structure of the humidity detection cap of the invention;

[0049] Figure 11 It shows a schematic structural diagram of the mechanical sensor of the invention in a state ready for penetration;

[0050] Figure 12Shows a schematic structural diagram of the environmental simulation box of the invention;

[0051] Figure 13 Shows a schematic diagram of the sealing plate structure of the invention;

[0052] As shown in the figure:

[0053] 100. Mechanical sensors,

[0054] 110. Main body, 111. Fixing ring, 112. Fixing hole, 113. First vertical chute,

[0055] 120, packaging cover, 121, snap ring, 122, clamping column, 123, insert, 124, second vertical slide,

[0056] 130, pressure core column, 131, mounting screw hole,

[0057] 140. Air guide, 141. First air guide tube, 142. Second air guide tube, 143. Stop frame, 144. Round pressure plate, 145. Side bracket, 146. Assembly seat,

[0058] 150. Butt joint, 151. Slider.

[0059] 160, circuit board, 161, card hole, 170, pressure probe,

[0060] 200, temperature detection cap, 210, first cap body, 220, first partition plate, 221, first air guide hole, 230, temperature probe, 240, first blocking fan blade, 241, first motor, 250, first fan impeller,

[0061] 300, humidity detection cap, 310, second cap body, 320, second partition plate, 321, second air guide hole, 330, humidity probe, 340, second blocking fan blade, 341, second motor, 350, second fan impeller, 360, moisture-absorbing particles,

[0062] 400, detection body, 410, bottom plate, 420, lifting assembly, 421, back plate, 422, first screw, 423, vertical adjustment block, 424, slot, 430, second screw, 440, horizontal adjustment block,

[0063] 500, environmental simulation chamber, 510, upper chamber, 511, operation port, 520, lower chamber, 530, first upper pressure cover, 540, first lower pressure cover, 550, second lower pressure cover, 560, blocking plate, 561, driving rod, 570, steam nozzle, 580, floating plate, 581, third screw, 590, second upper pressure cover,

[0064] 600, display host, 700, membrane material. DETAILED DESCRIPTION

[0065] To make the objectives, technical solutions, and advantages of the embodiments of the invention more clear, the technical solutions in the embodiments of the invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0066] Example

[0067] In order to solve the technical problems in the background technology, a mechanical tester for a stretched breathable membrane is provided as follows:

[0068] Combine Figures 1-13 As shown, the invention provides a post-stretching breathable membrane mechanical tester, including a mechanical sensor 1100, which includes a main body 110, a circuit board 160, a packaging cover 120, an air guide 140, a temperature detection cap 200 and a humidity detection cap 300; the bottom end of the main body 110 is an open structure, the internal top of the main body 110 is provided with a fixing ring 111, the bottom of the fixing ring 111 is a mounting cavity, the interior of the mounting cavity is fitted with a pressure core column 130, the bottom surface of the pressure core column 130 is a force-bearing surface, the interior of the pressure core column 130 is provided with four mounting screw holes 131 distributed in an annular array, and a fixing hole 112 is provided at a position opposite to the fixing ring 111 and the mounting screw hole 131; the input end of the circuit board 160 is connected to the pressure core column 130 through a wire, the circuit board 160 is placed in the packaging cover 120, and the packaging cover 120 covers the main body 110; two groups of mounting screw holes 131 located on the same midline are fixed to the two groups of fixing holes 112 by screws;

[0069] The air guide 140 extends upward through the other two sets of mounting screw holes 131 and the fixing hole 112. The top and bottom ends of the air guide 140 are provided with through-hole structures. The bottom of the air guide 140 contacts the force-bearing surface. The bottom of the air guide 140 is assembled and connected to the pressure probe 170. The air guide 140 is used to apply force to the force-bearing surface of the pressure core column 130 and introduce ambient gas.

[0070] The temperature detection cap 200 is mounted on a top end of the air guide 140 and stops at the top surface of the fixing ring 111. The temperature detection cap 200 is connected to the circuit board 160 via a wire. The temperature detection cap 200 is used to stop and position one end of the air guide 140 and detect the ambient gas temperature.

[0071] The humidity detection cap 300 is mounted on the other top end of the air guide 140 and stops at the top surface of the fixing ring 111. It is connected to the circuit board 160 via a wire. The temperature detection cap 200 is used to stop and position the other end of the air guide 140 and detect the humidity of the ambient gas.

[0072] The detection body 400 includes a base plate 410, a lifting assembly 420, and an environmental simulation chamber 500. The lifting assembly 420 is vertically mounted on one side of the base plate 410. The outer wall of the lifting assembly 420 is mounted with a vertically arranged force sensor 1100. The environmental simulation chamber 500 is slidably mounted on the surface of the base plate 410.

[0073] The display host 600 is connected to the circuit board 160 via wires.

[0074] In the above scheme:

[0075] 1. The provision of the air guide 140 can achieve the following effects:

[0076] 1.1. When positioning the pressure core column 130, only two sets of screws need to be screwed in, and the other two positioning screw holes can be used as the insertion area of ​​the air guide 140. In this way, the air guide 140 can be positioned and the pressure core column 130 can be assisted in positioning.

[0077] 1.2. The air guide 140 can be used as a screw-on connection structure for the pressure probe 170, making the connection and assembly of the pressure probe 170 easier and the type of the pressure probe 170 can be changed according to the detection needs;

[0078] 1.3. When the pressure probe 170 applies force to the film material 700 to be tested, the air guide 140 can act as a transfer component, so that the pressure is evenly applied to the force-bearing surface of the pressure core column 130, making the force transmission more stable and uniform;

[0079] 1.4. The air guide 140 can be used as an introduction space for detecting ambient gas. In this way, the temperature detection cap 200 can detect the temperature of the introduced gas, and the humidity detection cap 300 can detect the humidity of the introduced gas, thereby determining the temperature and humidity of the test chamber and improving detection accuracy;

[0080] In addition, the temperature detection cap 200 and the humidity detection cap 300 can position the top end of the air guide 140 so that the air guide 140 can only float upward and cannot move downward.

[0081] 2. When the air guide 140 is inserted into the standard cavity, it can detect the temperature and humidity of the standard cavity, which serves as a basis for pressure testing of the membrane material 700 in the standard cavity, making the pressure resistance performance test of the membrane material 700 more accurate. The more accurate pressure test results of the membrane material 700 in the standard cavity also serve as a basis for subsequent steam cavity judgment to determine whether the membrane material 700 in the steam cavity is qualified;

[0082] When the air guide 140 is inserted into the steam chamber, it can detect the humidity of the steam chamber, thereby determining the air permeability of the film material 700 and whether the air permeability of the breathable membrane is qualified. When the air guide 140 is inserted, the pressure probe 170 can also measure the puncture strength of the current temperature and humidity, making the puncture strength test result more accurate. The steam chamber can provide a high temperature and high humidity environment for film material testing.

[0083] The inspection of the standard chamber and the steam chamber is carried out continuously, eliminating the need to conduct multiple inspections in a cycle, making the inspection results more accurate.

[0084] In order to enable the air guide member 140 to achieve the above-mentioned multiple effects, the following solution is provided: In this embodiment, the air guide member 140 includes a first air guide tube 141, a second air guide tube 142, and a stop frame 143; the first air guide tube 141 is perpendicularly installed at one end of the stop frame 143, and the second air guide tube 142 is perpendicularly installed at the other end. The first air guide tube 141, the second air guide tube 142, and the stop frame 143 are U-shaped, and the stop frame 143 stops and contacts the force-bearing surface;

[0085] The top ends of the first air guide tube 141 and the second air guide tube 142 are both provided with threaded structures. When the air guide member 140 is inserted, the threaded sections of the first air guide tube 141 and the second air guide tube 142 are both placed above the fixing ring 111 .

[0086] In the above scheme: the air guide part 140 is designed to be U-shaped. This shape is adapted to the insertion needs of the two positioning screw holes of the pressure core column 130. At the same time, when the stop frame 143 is in contact with the force-bearing surface, the first air guide tube 141 and the second air guide tube 142 can be inserted into place, making the insertion easier; the top ends of the first air guide tube 141 and the second air guide tube 142 are reserved with threads to facilitate the assembly and positioning of the temperature detection cap 200 and the humidity detection cap 300.

[0087] In this embodiment, the stop frame 143 includes a circular pressure plate 144, a side bracket 145 and an assembly seat 146. The circular pressure plate 144 is concentrically fitted in the middle of the force-bearing surface. Side brackets 145 are symmetrically provided on both sides of the circular pressure plate 144. The outer ends of the two groups of side brackets 145 are respectively connected to the first air guide tube 141 and the second air guide tube 142. An assembly seat 146 is provided at the center of the bottom surface of the circular pressure plate 144; a pressure probe 170 is screwed onto the bottom of the assembly seat 146.

[0088] In the above solution, the main part of the stop frame 143 is designed to be a circular pressure plate 144. In this way, the circular pressure plate 144 applies force to the pressure core column 130 more evenly, and the assembly seat 146 is a rotary connection structure.

[0089] In this embodiment, the outer wall of the main body 110 is vertically slidably sleeved with a docking tube 150, the outer wall of the main body 110 is symmetrically provided with a first vertical slot 113, the packaging cover 120 is provided with a second vertical slot 124 at a position relative to the first vertical slot 113, and the inner wall of the docking tube 150 is provided with a slider 151; when not testing, the docking tube 150 is placed outside the pressure probe 170 to enclose and protect the pressure probe 170; when testing, the docking tube 150 is docked to the environmental simulation box 500 to avoid gas leakage and allow the pressure probe 170 to extend for testing.

[0090] In the above scheme:

[0091] 1. The butt joint 150 can protect the pressure probe 170 when not in use, thereby preventing the pressure probe 170 from being damaged and preventing outsiders from accidentally touching the pressure probe 170.

[0092] 2. When docking with the steam chamber of the environmental simulation box 500, in order to ensure that the air guide 140 and the pressure probe 170 can be introduced, the steam chamber of the environmental simulation box 500 needs to be opened, so that the steam volume will be discharged, affecting the subsequent detection results. The docking tube 150 is provided to pre-enclose the open through hole to prevent the steam from overflowing, and then the air guide 140 is inserted.

[0093] In this embodiment, the temperature detection cap 200 includes a first cap body 210, which is screwed onto the top of the first air duct 141 and fits against the top surface of the fixing ring 111. A first partition plate 220 is provided at the top of the interior of the first cap body 210. The bottom of the first partition plate 220 is a detection cavity. A temperature probe 230 is installed inside the detection cavity. The interior of the first partition plate 220 is provided with first air guide holes 221 distributed in an annular array. A first blocking fan 240 is rotatably installed on the top surface of the first partition plate 220. A first motor 241 for driving the first blocking fan 240 to rotate is installed on the top of the first partition plate 220. A first impeller 250 is installed at the top of the first cap body 210.

[0094] When the tester is testing, the first blocking fan 240 blocks the first air guide hole 221; when the tester is not testing, the first blocking fan 240 rotates and staggers to expose the first air guide hole 221, and the first fan impeller 250 blows out the gas in the test chamber downward to reset the parameters of the temperature probe 230.

[0095] In the above scheme:

[0096] During positioning, the first cap body 210 can be screwed onto the top threaded section of the first air guide tube 141;

[0097] The structural design of the temperature detection cap 200, through the cooperation of the first blocking fan 240, the first motor 241, and the first impeller 250, closes the air guide hole during testing to ensure detection accuracy. When not testing, the air guide hole is exposed to exhaust the gas in the detection chamber, resetting the parameters of the temperature probe 230. This prevents residual gas from interfering with the temperature probe 230, ensures that the temperature probe 230 is in an accurate initial state before each test, improves the accuracy and reliability of temperature detection, and reduces detection errors.

[0098] In this embodiment, the humidity detection cap 300 includes a second cap body 310, which is screwed onto the top of the second air duct 142 and abuts against the top surface of the fixing ring 111. A second partition plate 320 is provided at the top of the second cap body 310. The bottom of the second partition plate 320 forms a detection cavity, and a humidity probe 330 is installed inside the detection cavity.

[0099] The second partition plate 320 has second air guide holes 321 arranged in an annular array. A second blocking fan 340 is rotatably mounted on the top surface of the second partition plate 320. A second motor 341 is mounted on the top of the second partition plate 320 to drive the second blocking fan 340 to rotate. The top of the second partition plate 320 is filled with moisture-absorbing particles 360. The top of the second cap body 310 is mounted with a first impeller 250.

[0100] When the tester is testing, the second blocking fan 340 blocks the second air guide hole 321; when the tester is not testing, the second blocking fan 340 rotates and staggers to expose the second air guide hole 321, and the first fan impeller 250 extracts the gas in the test chamber to reset the parameters of the humidity probe 330.

[0101] In the above scheme:

[0102] When positioning, screw the second cap onto the top threaded section of the second air guide tube 142;

[0103] The structure of the humidity detection cap 300 is similar to that of the temperature detection cap 200. Through the coordinated action of the second sealing fan 340, the second motor 341, the first fan impeller 250 and the hygroscopic particles 360, the functions of closing the air guide holes during detection, discharging the gas in the detection cavity when not detecting, and resetting the parameters of the humidity probe 330 are achieved; preventing residual gas from affecting the humidity detection results, ensuring the accuracy of the humidity probe 330 detection, and at the same time, the hygroscopic particles 360 can absorb residual moisture to prevent moisture from affecting the operation of the circuit board 160.

[0104] In this embodiment, a locking hole 161 is defined inside the circuit board 160 , a locking ring 121 is defined on the inner wall of the packaging cover 120 , and a locking post 122 is symmetrically defined on the bottom surface of the locking ring 121 . The locking post 122 is inserted into the locking hole 161 .

[0105] In the above scheme: the circuit board 160 and the packaging cover 120 are connected through the card hole 161, the clamping ring 121 and the clamping column 122, so that the installation of the circuit board 160 is more stable, easy to disassemble and repair, and ensure that the circuit board 160 is accurately positioned in the packaging cover 120 to prevent line connection problems caused by shaking.

[0106] In this embodiment, the lifting assembly 420 includes a back plate 421, a vertical groove is provided inside the back plate 421, a vertically arranged first screw 422 is installed inside the vertical groove, a vertical adjustment block 423 is slidably installed inside the vertical groove and is threadedly mounted on the first screw 422, a slot 424 is provided on the outer side of the vertical adjustment block 423, and an insert block 123 is provided on the back side of the packaging cover 120, the insert block 123 is inserted into the slot 424 and the two are positioned by bolts.

[0107] In the above solution, the lifting assembly 420, through its structure including a back plate 421, a vertical slot, a first screw 422, and a vertical adjustment block 423, allows for flexible adjustment of the vertical position of the force sensor 1100. This feature enables the tester to adapt to the testing needs of stretched breathable membranes of varying specifications and placement heights.

[0108] In this embodiment, the environmental simulation box 500 includes a main box body, a horizontal adjustment block 440 is provided on the bottom surface of the main box body, a horizontal groove is opened on the surface of the bottom plate 410, a second screw 430 is installed inside the horizontal groove, and the horizontal adjustment block 440 is slidably embedded in the horizontal groove and threadedly mounted on the second screw 430; two test chambers are provided inside the main box body, and the two test chambers are respectively a standard chamber and a steam chamber.

[0109] The main box body includes an upper box body 510 and a lower box body 520. The upper box body 510 is buckled on the top of the lower box body 520. Two sets of operation ports 511 are opened on the surface of the upper box body 510. A first upper pressure cover 530 and a second upper pressure cover 590 are respectively provided on the inner top surface of the upper box body 510 at positions opposite to the operation ports 511. The inner tops of the first upper pressure cover 530 and the second upper pressure cover are both installed with blocking components.

[0110] A first and second pressure covers 540 and 550 are installed inside the lower box 520. The first and second pressure covers 540 and 550 are arranged on the surface of the floating plate 580. Both ends of the floating plate 580 are slidably placed in the lower box 520, and a third screw 581 is installed at the sliding connection.

[0111] When the main box is being tested, the upper box 510 and the lower box 520 cover both sides of a sample film material 700, the first upper pressure cover and the first lower pressure cover 540 are clamped in an area of ​​the film material 700 to form a standard cavity, and the second upper pressure cover and the second lower pressure cover 550 are clamped in another area of ​​the film material 700 to form a steam cavity, and a steam nozzle 570 is installed inside the second lower pressure cover 550.

[0112] In the above scheme, the environmental simulation chamber 500, through the cooperation of the upper and lower chambers 510 and 520, as well as the first and second downward pressure covers 540 and 550, simultaneously forms a standard chamber and a vapor chamber on a sample membrane 700, enabling comparative testing under different environments. This design not only reduces the number of samples required and testing costs, but also enables rapid acquisition of test data under different environments on the same membrane 700, improving testing efficiency. By comparing and analyzing the pressure resistance differences of the breathable membrane under standard and vapor environments, the overall performance of the breathable membrane can be more comprehensively evaluated.

[0113] The upper and lower pressure covers can form a sealed detection chamber for easy detection;

[0114] The floating plate 580 can drive the first downward pressure cover 540 and the second downward pressure cover 550 to be lifted up, thereby improving the sealing effect.

[0115] The design of the blocking component needs to be retracted into the upper pressure cover without affecting the insertion of the pressure probe 170. In order to solve the above problem, the following solution is given:

[0116] In this embodiment, the sealing assembly includes two groups of sealing plates 560, which are symmetrically arranged at the bottom of the operating port 511. The sealing plates 560 are semicircular, and the outer ends of the top surfaces of the sealing plates 560 are slidably installed on the inner top surface of the upper box body 510. The outer ends of the bottom surfaces of the sealing plates 560 are connected to the driving rod 561. The driving rod 561 is arranged horizontally and the outer ends are vertically fixedly connected to the first upper pressure cover 530 or the second upper pressure cover.

[0117] In the above scheme: the sealing component is connected to the first upper pressure cover 530 or the second upper pressure cover through two sets of sealing plates 560, the driving rod 561, and effectively blocks the operating port 511 when testing the film material 700, thereby ensuring the sealing of the standard cavity and the steam cavity. Good sealing can maintain the stability of the pressure and gas environment in the standard cavity and the steam cavity, and prevent changes in the detection environment due to gas leakage, thereby affecting the accuracy of the detection results. During the puncture test, the driving rod 561 drives the sealing plate 560 to retract to expose the insertion gap. The sealing plate 560 is slidably placed on the top surface of the upper box body 510, which can make the translation of the sealing plate 560 more stable and smooth.

[0118] When the present invention is specifically implemented:

[0119] S1. Mechanical sensor 1100 assembly:

[0120] The pressure core column 130 is fixed to the fixing ring 111 inside the main body 110 by screws through two sets of mounting screw holes 131 and fixing holes 112 located on the same center line;

[0121] Thread the pressure probe 170 onto the assembly seat 146 on the stop frame 143. Then, insert the air guide 140 from bottom to top through the other two sets of mounting screw holes 131 and the fixing hole 112 of the pressure core column 130, placing the threaded sections of the first air guide tube 141 and the second air guide tube 142 above the fixing ring 111. Then, thread the temperature detection cap 200 and the humidity detection cap 300 onto the assembly seat 146 on the stop frame 143. Connect the temperature detection cap, the humidity detection cap 300, and the pressure core column 130 to the circuit board 160 via wires.

[0122] The circuit board 160 is securely mounted in the packaging cover 120 by means of the clamping hole 161 and the clamping ring 121 and clamping column 122 on the inner wall of the packaging cover 120 , and then the packaging cover 120 is covered on the main body 110 ;

[0123] Then insert the insert block 123 on the back of the packaging cover 120 into the slot 424 of the vertical adjustment block 423 and fix it with bolts;

[0124] S2. Preparation of samples and environmental simulation box 500

[0125] The stretched breathable membrane sample is placed flat on the lower box body 520, and then the upper box body 510 is closed so that the upper box body 510 and the lower box body 520 are buckled together. The first upper pressure cover 530 and the first lower pressure cover, the second upper pressure cover and the second lower pressure cover correspond to different areas of the sample membrane material 700; a standard cavity is formed in one area of ​​the membrane material 700, and a steam cavity is formed in the other area to clamp the sample membrane material 700; the third screw 581 drives the floating plate 580 to rise, improving the sealing of each detection cavity. The two sets of blocking plates 560 are initially docked to block the operating port 511; the steam generator in the steam cavity is operated, so that the steam causes the membrane material 700 to be subjected to high temperature and high humidity treatment;

[0126] S3, Standard cavity detection:

[0127] The second screw 430 drives the horizontal adjustment block 440 to move, so that the standard cavity of the main chassis is placed directly below the pressure probe 170; the first screw 422 drives the vertical adjustment block 423 downward, so that the docking tube 150 is first attached to the operation port 511;

[0128] The driving rod 561 drives the blocking plate 560 to retract, and then the pressure probe 170 descends again. The first air guide tube 141 and the second air guide tube 142 extend into the first upper pressure cover 530. The first air guide tube 141 and the second air guide tube 142 collect the gas in the first upper pressure cover 530. The pressure probe 170 punctures the film material 700 and transmits the force to the force-bearing surface of the pressure core column 130. The pressure core column 130 transmits the pressure signal to the circuit board 160, and then transmits it to the display host 600 to display the pressure data; the temperature probe 230 in the temperature detection cap 200 detects the gas temperature, and the humidity probe 330 in the humidity detection cap 300 detects the gas humidity. The detection data is also transmitted to the circuit board 160 and the display host 600;

[0129] After the detection is completed, the pressure probe 170 is lifted up, the first blocking fan blade 240 and the second blocking fan blade 340 are rotated and opened, and the first fan impeller 250 and the second fan impeller 350 are put into operation.

[0130] S4. Steam chamber detection:

[0131] The main chassis is translated again so that the vapor chamber is placed above the pressure probe 170;

[0132] The first air duct 141 and the second air duct 142 extend into the second upper pressure cover. The first air duct 141 and the second air duct 142 collect gas in the second upper pressure cover. The pressure probe 170 punctures the film material 700 and transmits force to the force-bearing surface of the pressure core column 130. The pressure core column 130 transmits the pressure signal to the circuit board 160, and then transmits it to the display host 600 to display pressure data. The temperature probe 230 in the temperature detection cap 200 detects the gas temperature, and the humidity probe 330 in the humidity detection cap 300 detects the gas humidity. The detection data is also transmitted to the circuit board 160 and the display host 600.

[0133] After the detection is completed, the pressure probe 170 is lifted up, the first blocking fan blade 240 and the second blocking fan blade 340 are rotated and opened, and the first fan impeller 250 and the second fan impeller 350 are put into operation.

[0134] S5. Post-test processing

[0135] The display host 600 records the test data such as pressure, temperature, humidity, etc. in real time, and the test personnel can view and record the data.

[0136] Equipment reset and sample removal

[0137] After the test is completed, close the plugging component and stop the steam supply.

[0138] The butt joint 150 slides down to surround the pressure probe 170 again, thereby protecting the pressure probe 170 .

[0139] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0140] The above embodiments are only used to illustrate the technical solutions of the invention, rather than to limit it. Although the invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the invention.

Claims

1. A mechanical tester for breathable membranes after stretching, characterized in that: include: The mechanical sensor includes a main body, a circuit board, a packaging cover, an air guide, a temperature detection cap, and a humidity detection cap. The bottom end of the main body is an open structure. A fixing ring is provided at the top of the main body. The bottom of the fixing ring is a mounting cavity. A pressure core column is fitted and embedded in the mounting cavity. The bottom surface of the pressure core column is a force-bearing surface. Four mounting screw holes distributed in an annular array are provided inside the pressure core column. A fixing hole is provided at a position opposite the fixing ring and the mounting screw holes. The input end of the circuit board is connected to the pressure core column via a wire. The circuit board is placed in the packaging cover, which is covered on the main body. Two sets of mounting screw holes located on the same center line are fixed to the two sets of fixing holes by screws. The air guide piece passes through the other two sets of mounting screw holes and fixing holes from bottom to top. The top and bottom ends of the air guide piece are provided with through-hole structures. The bottom of the air guide piece contacts the force-bearing surface. The bottom of the air guide piece is assembled and connected to the pressure probe. The gas guide is used to apply force to the pressure surface of the pressure core column and introduce ambient gas; A temperature detection cap is mounted on a top end of the air guide and stops at the top surface of the fixing ring, and is connected to the circuit board via a wire; the temperature detection cap is used to stop and position one end of the air guide and detect the ambient gas temperature; The humidity detection cap is installed on the other top end of the air guide and stops at the top surface of the fixing ring. It is connected to the circuit board through a wire. The temperature detection cap is used to stop and position the other end of the air guide and detect the humidity of the ambient gas. The testing body includes a base plate, a lifting assembly, and an environmental simulation chamber; the lifting assembly is vertically provided on one side of the base plate, and a vertically arranged mechanical sensor is installed on the outer wall of the lifting assembly. The environmental simulation chamber is slidably installed on the surface of the base plate, and the environmental simulation chamber has two test chambers, namely a standard chamber and a steam chamber; The display host is connected to the circuit board through wires.

2. The stretched breathable membrane mechanical tester according to claim 1, characterized in that: The air guide member includes a first air guide tube, a second air guide tube, and a stop frame; the first air guide tube is vertically provided at one end of the stop frame, and the second air guide tube is vertically provided at the other end; the first air guide tube, the second air guide tube and the stop frame are U-shaped, and the stop frame stops against the force-bearing surface; The top ends of the first air guide tube and the second air guide tube are both provided with a threaded structure; when the air guide member is inserted, the threaded sections of the first air guide tube and the second air guide tube are both placed above the fixing ring.

3. The stretched breathable membrane mechanical tester according to claim 2, characterized in that: The stop frame includes a circular pressure plate, a side bracket and an assembly seat. The circular pressure plate is concentrically fitted to the middle of the force-bearing surface. Side brackets are symmetrically provided on both sides of the circular pressure plate. The outer ends of the two groups of side brackets are respectively connected to the first air duct and the second air duct. An assembly seat is provided at the center of the bottom surface of the circular pressure plate; a pressure probe is screwed onto the bottom of the assembly seat.

4. The stretched breathable membrane mechanical tester according to claim 3, characterized in that: The outer wall of the main body is vertically slidably provided with a docking tube, the outer wall of the main body is symmetrically provided with a first vertical slide groove, the packaging cover is provided with a second vertical slide groove at a position opposite to the first vertical slide groove, and the inner wall of the docking tube is provided with a slider; when not testing, the docking tube is placed outside the pressure probe to enclose and protect the pressure probe; when testing, the docking tube is docked on the environmental simulation box to avoid gas leakage and allow the pressure probe to be extended for detection.

5. The stretched breathable membrane mechanical tester according to claim 2, characterized in that: The temperature detection cap includes a first cap body, which is screwed onto the top end of the first air duct and fits against the top surface of the fixing ring. A first partition plate is provided at the top end of the first cap body. The bottom of the first partition plate is a detection cavity. A temperature probe is installed inside the detection cavity. The first partition plate is provided with first air guide holes distributed in an annular array. A first blocking fan is rotatably installed on the top surface of the first partition plate. A first motor that drives the first blocking fan to rotate is installed on the top of the first partition plate. A first fan impeller is installed at the top end of the first cap body. When the tester is testing, the first blocking fan blocks the first air guide hole; when the tester is not testing, the first blocking fan rotates and staggers to expose the first air guide hole, and the first fan impeller blows out the gas in the test cavity downward to reset the temperature probe parameters.

6. The stretched breathable membrane mechanical tester according to claim 2, characterized in that: The humidity detection cap includes a second cap body, which is screwed onto the top of the second air duct and fits against the top surface of the fixing ring. A second partition plate is provided at the top of the interior of the second cap body. The bottom of the second partition plate is a detection cavity, and a humidity probe is installed inside the detection cavity. The second partition plate has second air guide holes distributed in an annular array inside, a second blocking fan is rotatably mounted on the top surface of the second partition plate, a second motor is mounted on the top of the second partition plate to drive the second blocking fan to rotate, the top of the second partition plate is filled with moisture-absorbing particles, and a first fan impeller is mounted on the top of the second cap body; When the tester is testing, the second blocking fan blocks the second air guide hole; when the tester is not testing, the second blocking fan rotates and staggers to expose the second air guide hole, and the first fan impeller draws out the gas in the test chamber to reset the humidity probe parameters.

7. The stretched breathable membrane mechanical tester according to claim 1, characterized in that: A clamping hole is provided inside the circuit board, a clamping ring is provided on the inner wall of the packaging cover, and a clamping column is symmetrically provided on the bottom surface of the clamping ring. The clamping column is inserted into the clamping hole.

8. The stretched breathable membrane mechanical tester according to claim 1, characterized in that: The lifting assembly includes a back plate, a vertical groove is provided inside the back plate, a vertically arranged first screw is installed inside the vertical groove, a vertical adjustment block is slidably installed inside the vertical groove and is threadedly mounted on the first screw, a slot is provided on the outer side of the vertical adjustment block, and an insert block is provided on the back of the packaging cover, the insert block is inserted into the slot and the two are positioned by bolts.

9. The stretched breathable membrane mechanical tester according to claim 8, characterized in that: The environmental simulation box includes a main box body, a horizontal adjustment block is provided on the bottom surface of the main box body, a horizontal groove is provided on the surface of the bottom plate, a second screw is installed inside the horizontal groove, and the horizontal adjustment block is slidably embedded in the horizontal groove and threadedly sleeved on the second screw; The main box body includes an upper box body and a lower box body, the upper box body is buckled on the top of the lower box body, the surface of the upper box body is provided with two sets of operation ports, the inner top surface of the upper box body is provided with a first upper pressure cover and a second upper pressure cover at positions opposite to the operation ports, and the inner tops of the first upper pressure cover and the second upper pressure cover are both provided with a blocking assembly; the interior of the second lower pressure cover is provided with a steam nozzle; The interior of the lower box body is equipped with a first lower pressure cover and a second lower pressure cover. The first lower pressure cover and the second lower pressure cover are arranged on the surface of the floating plate. Both ends of the floating plate are slidably placed in the lower box body and a third screw is installed at the sliding connection. When the main box is being tested, the upper box and the lower box cover both sides of a sample film material, the first upper pressure cover and the first lower pressure cover are clamped on one area of ​​the film material to form a standard cavity, and the second upper pressure cover and the second lower pressure cover are clamped on another area of ​​the film material to form a steam cavity.

10. The stretched breathable membrane mechanical tester according to claim 9, characterized in that: The blocking assembly includes two groups of blocking plates, which are symmetrically arranged at the bottom of the operating port. The blocking plates are semicircular, and the outer ends of the top surfaces of the blocking plates are slidably installed on the top surface of the upper box body. The outer ends of the bottom surfaces of the blocking plates are connected to the driving rod. The driving rod is arranged horizontally and the outer ends are vertically fixedly connected to the first upper pressure cover or the second upper pressure cover.

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