Breathability detection device for protective clothing production

Abstract

The invention relates to the field of detection equipment for protective clothing production, in particular to an air permeability detection device for protective clothing production. The device comprises a bottom plate, a sealing detection box, a winding disc, a wind power detector, a fan, a vertical rod, a clamping piece, a tensioning piece and the like. The draught fan blows air into the sealing detection box, the wind power detector detects wind power changes, the clamping pieces on the vertical rods fix the ends of the cloth, the tensioning pieces enable the cloth to be kept in a tensioned state, and therefore accurate detection of the air permeability of the cloth is achieved. The effect of improving the detection precision and efficiency is achieved.

Description

Technical Field

[0001] The present application relates to the field of fabric detection, and in particular to an air permeability detection device for protective clothing production. Background Art

[0002] Air permeability is a physical index that characterizes the air permeability in the tested sample, and is mainly used for porous materials with large air permeability, such as textiles, sponges, leather, etc. For fabric materials, the air permeability is related to the number and size of the gaps between the warp and weft yarns and the gaps between the fibers, the warp and weft density, the yarn twist, the fiber properties, the yarn structure, the fabric thickness and other factors.

[0003] Most of the fabric detection devices soak the fabric in water to observe its air permeability. This method may cause damage to the fabric. The Chinese patent with the publication number CN109540756A discloses a fabric air permeability detection device. When in use, first fix one end of the fabric to one end of the combination rod, then turn on the No. 2 servo motor and use the No. 2 servo motor to drive the No. 2 motor shaft to rotate. Since the No. 2 servo motor is rotatably connected to the combination rod through the No. 2 motor shaft and the fixed flange, the No. 2 servo motor can be turned on to drive the combination rod to rotate, so that the fabric is wrapped around the outside of the combination rod. Then, turn on the No. 1 servo motor and use the No. 1 servo motor to drive the threaded rod to rotate, so that the threaded sleeve moves downward, and use the card slot to clamp the upper end of the main combination rod to turn on the micro fan, so that the micro fan transports wind from the air duct to the air outlet. Some wind force detection devices can be set on the other side of the combination rod relative to the micro fan to detect whether there is wind passing through, so as to detect the air permeability of the fabric. Although the existing technical problems have been solved, the following problems still exist: In this technical solution, when the combination rod is rolling up the cloth, there is a lack of traction on the cloth, so it is difficult to wrap the cloth neatly on the combination rod. Therefore, the staff needs to manually pull the cloth, which is quite troublesome, so improvements are made. Summary of the invention

[0004] Based on the technical problems existing in the prior art, the present application proposes an air permeability detection device for protective clothing production.

[0005] The present application provides an air permeability detection device for protective clothing production using the following technical solution: A breathability detection device for protective clothing production comprises a bottom plate, wherein a sealing detection box is provided on the bottom plate, a winding disk is rotatably arranged in the sealing detection box, a wind detector is arranged on the winding disk, a fan is provided on the bottom plate, an air outlet of the fan is connected with the sealing detection box and is arranged toward the wind detector, a plurality of vertical rods distributed in a circular array are provided on the top of the winding disk, a feeding slot for inserting cloth is provided on the sealing detection box, a plurality of vertical rods are slidably arranged on the winding disk, a first driving member driving the vertical rods to slide is provided on the winding disk, a clamping member for clamping the end of the cloth is provided on the vertical rod, the vertical rod is inserted into the feed slot, a tensioning member for tensioning the cloth is provided on the bottom plate, the tensioning member comprises a plurality of tensioning plates, a plurality of tensioning plates are slidably arranged on the bottom plate, a tensioning roller is rotatably arranged on the tensioning plate, and the cloth is sequentially wound around the plurality of tensioning rollers.

[0006] By adopting the above technical solution, efficient and accurate air permeability testing of protective clothing fabrics can be achieved. Specifically: the sealed test box on the bottom plate ensures the airtightness of the test environment, reduces the external gas blowing from the top of the box wind detector, and avoids external factors interfering with the test results. The wind detector on the reel can monitor the air permeability of the fabric in real time, improving the accuracy and reliability of the test. The air outlet of the fan is connected to the sealed test box and is set toward the wind detector, ensuring the stability and uniformity of the wind force, and further improving the detection accuracy. Multiple vertical rods and clamps distributed in a circular array can firmly clamp the fabric to prevent the fabric from shifting or falling off during the test process, ensuring the stability of the test process. The design of the tensioner can effectively tension the fabric, eliminate errors caused by fabric slack, and make the test results more reliable.

[0007] Optionally, the clamping member includes a clamping plate and a clamping spring, a first vertical groove is opened on the vertical rod, a mounting groove is opened on the side wall of the first vertical groove, the clamping spring is connected in the mounting groove, one end of the clamping spring is connected to the clamping plate, and the clamping plate is pressed against the side wall of the first vertical groove.

[0008] By adopting the above technical solution, the clamping piece can effectively fix the end of the cloth, ensuring that the cloth will not be displaced or fall off during the test, thereby improving the accuracy of the test results. The clamping plate fits tightly with the side wall of the first vertical groove, and under the action of the clamping spring, it can adapt to cloths of different thicknesses, ensuring the stability and reliability of clamping. At the same time, the design structure is simple and easy to operate and maintain.

[0009] Optionally, the first driving member includes an electromagnet, which is arranged in the sealing detection box, and the winding disk is provided with T-slots corresponding to the multiple vertical rods one by one. The bottom of the vertical rod is connected to a T-block, and the T-block is an iron block. The T-block is inserted into the T-slot and slidably cooperates with the T-slot. A tension spring is connected to the side wall of the T-slot, and one end of the tension spring is connected to the T-block. When the electromagnet is energized, the electromagnet adsorbs the T-block and the vertical rod is inserted into the feed trough.

[0010] By adopting the above technical solution, the electromagnet is used to absorb the T-block, so that the vertical rod can be automatically extended into the feed slot, which improves the automation of cloth clamping, reduces manual operation, and improves work efficiency. At the same time, by setting the tension spring, when the electromagnet is powered off, it is ensured that the vertical rod can be reset when it is not absorbed by the electromagnet, ensuring the stability and reliability of the equipment.

[0011] Optionally, the clamping plate is an arc-shaped plate, a second groove is provided on the bottom wall of the feed trough, a shift block is slidably arranged in the second groove, a third groove is opened on the side wall of the sealing detection box, the electromagnet is installed at the bottom of the third groove, a mounting block is slidably arranged in the third groove, the side wall of the mounting block facing away from the electromagnet is embedded with a first magnetic block that adsorbs the T-block, a second magnetic block is embedded on the top of the mounting block, a third magnetic block that magnetically repels the second magnetic block is provided on the bottom wall of the shift block, a shift spring is connected to the shift block, one end of the shift spring is connected to the shift block, and the other end is connected to the side wall of the third groove, when the third magnetic block is opposite to the second magnetic block, the shift block extends out of the second groove.

[0012] By adopting the above technical solution, the clamping plate is designed as an arc plate, which can better fit the surface of the fabric and improve the clamping stability and reliability. At the same time, the second groove on the bottom wall of the feed chute and the sliding block, as well as the third groove and the mounting block on the side wall of the sealing detection box, form an effective fabric guiding and fixing mechanism. When the electromagnet is energized, the magnetic poles of the electromagnet and the first magnetic block are first repelled, so that the mounting block moves toward the winding disk, and the mounting block is adsorbed with the T-block. The magnetic poles of the electromagnet are adjusted again so that the electromagnet adsorbs the first magnetic block, and the T-block is moved by magnetic action, thereby driving the vertical rod to insert into the feed slot. When the mounting block moves to the bottom of the shift block, the repulsive force between the second magnetic block and the third magnetic block on the mounting block causes the shift block to move upward. As the vertical rod is gradually inserted into the feed slot, the side wall of the shift block contacts the arc surface of the clamping plate, which resists the clamping plate, so that the clamping spring is forced to squeeze, so that a gap is generated between the clamping plate and the first vertical slot. When the first vertical slot is flush with the notch of the feed slot, it is convenient for the operator to insert one end of the cloth, and then the electromagnet is powered off. Under the action of the tension spring, the mounting block is reset together with the T-block. Without the second magnetic block, under the action of gravity and the toggle spring, the clamping plate is subjected to the extrusion force of the clamping spring to clamp the cloth, thereby realizing automatic positioning and clamping. In addition, the magnetic repulsion design of the shift block can effectively prevent misoperation when the third magnetic block is opposite to the second magnetic block, ensuring the smooth introduction and fixation of the fabric, and improving the automation level and detection accuracy of the equipment.

[0013] Optionally, the surfaces opposite to the T-block and the mounting block are both arc-shaped, a breaking groove is provided at the bottom of the third groove, a breaking plate is slidably arranged in the breaking groove, a breaking spring is connected to the bottom of the breaking plate, a pull rope is connected to the bottom of the breaking plate, one end of the pull rope is connected to the shift block, when the top surface of the shift block is flush with the notch of the second groove, the pull rope is in a taut state, and the breaking plate is located between the T-block and the mounting block.

[0014] By adopting the above technical solution, the surfaces of the T-block and the mounting block facing each other are both arc-shaped, so that the T-block can move more smoothly along the mounting block, reduce friction resistance, and improve movement stability. At the same time, a breaking groove is provided at the bottom of the third groove, a breaking plate is slidably arranged in the breaking groove, a breaking spring is connected to the bottom of the breaking plate, a pull rope is connected to the bottom of the breaking plate, and one end of the pull rope is connected to the shift block. When the top surface of the shift block is flush with the notch of the second groove, the pull rope is in a taut state. When it is necessary to disconnect the connection between the mounting block and the T-block, the electromagnet is powered off, and then the shift block is pressed down, reducing the tension applied by the shift spring on the pull rope, so that the breaking spring recovers elastic deformation, driving the breaking plate to move upward, and the breaking plate is inserted between the T-block and the mounting block. In order to ensure the separation of the T-block and the mounting block, the electromagnet can be started again to change the direction of the current so that the electromagnet adsorbs the mounting block in the direction away from the T-block, thereby improving the convenience and reliability of operation.

[0015] Optionally, a forward and reverse motor is provided in the sealing box detection box, an output shaft of the forward and reverse motor is connected to a rotating rod, and the rotating rod is coaxially connected to the center of the winding disk.

[0016] By adopting the above technical solution, the automatic rotation of the winding disk is realized, so that the cloth can be evenly distributed on the winding disk, improving the stability and accuracy of the detection process. At the same time, the use of the forward and reverse motor enables the winding disk to achieve bidirectional rotation, further improving the flatness and tightness of the cloth during the winding process, and avoiding the problem of cloth accumulation or deviation that may be caused by unidirectional rotation.

[0017] Optionally, a leak-proof plate is slidably provided on the top of the sealing detection box, and the leak-proof plate is connected to the bottoms of the plurality of vertical rods.

[0018] By adopting the above technical solution, the leak-proof plate contacts the tops of the multiple vertical rods, which can effectively reduce the gas from above the vertical rods into the space surrounded by the fabric, thereby ensuring the accuracy of the detection results.

[0019] Optionally, a driving cylinder is provided on the sealing detection box, and a piston rod of the driving cylinder is inserted into the sealing detection box and connected to the anti-leakage plate.

[0020] By adopting the above technical solution, the driving cylinder can accurately control the movement of the leak-proof plate to ensure that the leak-proof plate fits tightly against the top of the vertical rod, thereby effectively preventing gas from blowing from above to the wind detector and improving the accuracy of the detection results. At the same time, the automated operation of the driving cylinder improves the convenience and work efficiency of the equipment.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting multiple vertical rods and clamping parts on the winding disk, the fabric is stably fixed, avoiding the problem of loose fabric fixation in traditional detection devices and ensuring the accuracy of the detection results; 2. Using the electromagnet as the first driving part to control the sliding of the vertical rod, the fabric can be evenly tensioned, reducing the uneven force on the fabric during the detection process and further improving the reliability of the detection results; 3. By setting up fans and wind detectors to simulate the wind pressure conditions in the actual use environment, the air permeability of the fabric can be more realistically reflected, thus improving the practicality and accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of this application.

[0023] Figure 2It is a schematic diagram of the wind detector, vertical rod, and T-slot structure in the embodiment of the present application.

[0024] Figure 3 It is a cross-sectional view of the T-block, electromagnet, and tension spring structure in the embodiment of the present application.

[0025] Figure 4 It is a cross-sectional view of the clamping plate, the clamping spring, and the first vertical groove structure in the embodiment of the present application.

[0026] Figure 5 Yes Figure 3 Enlarged view of part A.

[0027] Explanation of the accompanying drawings: 1. bottom plate; 2. sealing detection box; 3. winding reel; 4. wind detector; 5. fan; 6. vertical rod; 7. feed trough; 8. tensioning plate; 9. dovetail groove; 10. tightening bolt; 11. tensioning roller; 12. raw material roller; 13. clamping plate; 14. clamping spring; 15. first vertical slot; 16. mounting slot; 17. electromagnet; 18. T-slot; 19. T-block; 20. tension spring; 21. second slot; 22. shifting block; 23. third slot; 24. mounting block; 25. first magnetic block; 26. second magnetic block; 27. third magnetic block; 28. shifting spring; 29. ​​breaking slot; 30. breaking plate; 31. breaking spring; 32. pull rope; 33. forward and reverse motor; 34. leak-proof plate; 35. sliding port; 36. driving cylinder. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-5 This application is described in further detail.

[0029] The inventor of the present application has found that the existing protective clothing air permeability detection device is prone to problems such as loose fabric and inaccurate detection results during the detection process. For this reason, the present application mainly adopts the following air permeability detection device for protective clothing production, including a base plate 1, a sealing detection box 2, a winding disk 3, a wind detector 4, a fan 5, a vertical rod 6, a clamping member, a tensioning member and other components, so as to achieve the purpose of improving the detection accuracy and efficiency. The present application is further described in detail below. Example

[0030] The air permeability detection device for protective clothing production provided in the embodiment of the present application is referred to Figure 1 , Figure 2 and Figure 3, including a bottom plate 1, a sealing detection box 2, a reel 3, a wind detector 4, a fan 5, a vertical rod 6, a clamping member, a tensioning member and other components. Among them, a sealing detection box 2 is provided on the bottom plate 1, a reel 3 is rotatably provided in the sealing detection box 2, a wind detector 4 is provided on the reel 3, a fan 5 is provided on the bottom plate 1, and the air outlet of the fan 5 is connected with the sealing detection box 2 and is arranged toward the wind detector 4. A plurality of vertical rods 6 distributed in a circular array are provided on the top of the reel 3, a feed slot 7 for inserting fabric is provided on the sealing detection box 2, a plurality of vertical rods 6 are slidably provided on the reel 3, a first driving member driving the vertical rod 6 to slide is provided on the reel 3, a clamping member for clamping the end of the fabric is provided on the vertical rod 6, and the vertical rod 6 is inserted into the feed slot 7.

[0031] Reference Figure 1 , Figure 2 and Figure 3 A tensioning member for tensioning the cloth is provided on the bottom plate 1, and the tensioning member includes a plurality of tensioning plates 8. The cross-section of the tensioning plate 8 is dovetail-shaped. Dovetail grooves 9 corresponding to the plurality of tensioning plates 8 are opened on the bottom plate 1. The tensioning plates 8 are inserted into the dovetail grooves 9 and slide with the dovetail grooves 9. The tensioning plates 8 are fixed to the bottom plate 1 by a plurality of tightening bolts 10. A tensioning roller 11 is rotatably provided on the tensioning plate 8. The cloth is sequentially wound around the plurality of tensioning rollers 11. One end of the bottom plate 1 is rotatably connected to a raw material roller 12 for winding the cloth, and the raw material roller 12 is driven by a motor.

[0032] Reference Figure 1 , Figure 2 and Figure 3 The sealing detection box 2 can be made of stainless steel material, which has good corrosion resistance and sealing performance. The bottom plate 1 can be made of aluminum alloy material, which is light in weight and high in strength. The winding reel 3 can be connected to the inner wall of the sealing detection box 2 through a bearing to ensure its smooth rotation. The wind force detector 4 can be a wind speed sensor, which is installed at the center of the winding reel 3 to accurately measure the wind speed. The fan 5 can be an efficient and energy-saving centrifugal fan 5, which is installed on one side of the bottom plate 1 and connected to the sealing detection box 2 through a pipeline.

[0033] Reference Figure 1 , Figure 2 and Figure 4 A clamping member is provided on the vertical rod 6, and the clamping member includes a clamping plate 13 and a clamping spring 14. A first vertical groove 15 is opened on the vertical rod 6, and a mounting groove 16 is opened on the side wall of the first vertical groove 15. The clamping spring 14 is connected in the mounting groove 16, and one end of the clamping spring 14 is connected to the clamping plate 13, and the clamping plate 13 is pressed against the side wall of the first vertical groove 15.

[0034] Reference Figure 1 , Figure 2 and Figure 5The first driving member includes an electromagnet 17, which is arranged in the sealing detection box 2. The winding disk 3 is provided with T-shaped slots 18 corresponding to the plurality of vertical rods 6. The bottom of the vertical rod 6 is connected with a T-shaped block 19, which is an iron block. The T-shaped block 19 is inserted into the T-shaped slot 18 and slidably cooperates with the T-shaped slot 18. The side wall of the T-shaped slot 18 is connected with a tension spring 20, and one end of the tension spring 20 is connected to the T-shaped block 19. When the electromagnet 17 is energized, the electromagnet 17 absorbs the T-shaped block 19, and the vertical rod 6 is inserted into the feed slot 7.

[0035] Reference Figure 3 , Figure 4 and Figure 5 The clamping plate 13 is an arc-shaped plate, and a second groove 21 is provided on the bottom wall of the feed groove 7. The second groove 21 and the feed groove 7 are both through grooves. A shift block 22 is slidably arranged in the second groove 21. A third groove 23 is opened on the side wall of the sealing detection box 2. The electromagnet 17 is installed at the bottom of the third groove 23. A mounting block 24 is slidably arranged in the third groove 23. The side wall of the mounting block 24 facing away from the electromagnet 17 is embedded with a first magnetic block 25 that absorbs the T-block 19. A second magnetic block 26 is embedded on the top of the mounting block 24. The bottom wall of the shift block 22 is provided with a third magnetic block 27 that magnetically repels the second magnetic block 26. A shift spring 28 is connected to the shift block 22. One end of the shift spring 28 is connected to the third magnetic block 27 on the shift block 22, and the other end is connected to the side wall of the third groove 23. In the natural state, the top of the shift block 22 is flush with the notch of the second groove 21. When the third magnetic block 27 is opposite to the second magnetic block 26 , the shifting block 22 extends out of the second slot 21 , and the surfaces of the T-shaped block 19 and the mounting block 24 that are opposite to each other are both arc-shaped.

[0036] Reference Figure 3 , Figure 4 and Figure 5 The bottom of the third slot 23 is provided with a disconnecting slot 29, a disconnecting plate 30 is slidably arranged in the disconnecting slot 29, a disconnecting spring 31 is connected to the bottom of the disconnecting plate 30, a pull rope 32 is connected to the bottom of the disconnecting plate 30, one end of the pull rope 32 is connected to the shift block 22, when the top surface of the shift block 22 is flush with the notch of the second slot 21, the pull rope 32 is in a taut state, the disconnecting spring 31 is in a compressed state, and the disconnecting plate 30 is located between the T-block 19 and the mounting block 24. This design can quickly release the T-block 19 when the electromagnet 17 is powered off, so that it returns to the initial position to avoid affecting subsequent operations. Figure 1 , Figure 2 and Figure 5A forward and reverse motor 33 is provided in the sealing detection box 2, and a rotating rod is connected to the output shaft of the forward and reverse motor 33, and the rotating rod is coaxially connected to the center of the winding disk 3. The forward and reverse motor 33 can be a stepper motor with high precision and stability. The rotating rod can be connected to the winding disk 3 through a coupling to ensure synchronous rotation. The control circuit of the forward and reverse motor 33 can be integrated inside the sealing detection box 2 and operated through buttons or a touch screen.

[0037] Reference Figure 1 , Figure 2 and Figure 5 The top of the sealing detection box 2 is slidably provided with a leakproof plate 34, and the top of the sealing detection box 2 is provided with a sliding opening 35 for inserting the leakproof plate 34, and the leakproof plate 34 contacts the tops of the plurality of vertical rods 6. The leakproof plate 34 can be made of a silicone material, which has good sealing performance. The circumferential side wall of the leakproof plate 34 fits with the sliding opening 35 to ensure its smooth movement.

[0038] Reference Figure 1 , Figure 2 and Figure 5 The sealing detection box 2 is provided with a driving cylinder 36, and the piston rod of the driving cylinder 36 is inserted into the sealing detection box 2 and connected to the leakproof plate 34. The driving cylinder 36 can be a pneumatic cylinder, which has the characteristics of large thrust and fast response speed.

[0039] The implementation principle of this embodiment is: the sliding of the vertical rod 6 is controlled by the electromagnet 17, so that the clamping piece on the vertical rod 6 can firmly clamp the end of the cloth to ensure that the cloth will not loosen during the detection process. The design of the tensioning piece allows the cloth to be fully tensioned before entering the sealed detection box 2, avoiding uneven force on the cloth in the wind tunnel and improving the accuracy of the detection results. The wind flow generated by the fan 5 is measured by the wind detector 4 in the sealed detection box 2, which can accurately evaluate the air permeability of the cloth, thereby ensuring that the product meets the standard requirements. This design not only improves the accuracy and efficiency of the detection, but also simplifies the operation process and reduces labor costs.

[0040] The addition of the forward and reverse motor 33 enables the winding disc 3 to rotate automatically during the detection process, avoiding errors caused by manual operation. The design of the leak-proof plate 34 can effectively prevent the airflow from leaking from the gap between the vertical rod 6 and the sealed detection box 2, thereby improving the accuracy of the detection. The use of the driving cylinder 36 makes the movement of the leak-proof plate 34 smoother and faster, reducing the operation time. This design not only improves the reliability and safety of the detection, but also further enhances the degree of automation of the detection device and reduces the need for manual intervention. The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A breathability detection device for protective clothing production, comprising a bottom plate (1), characterized in that: The bottom plate (1) is provided with a sealing detection box (2), a winding disk (3) is rotatably arranged in the sealing detection box (2), a wind detector (4) is arranged on the winding disk (3), a fan (5) is arranged on the bottom plate (1), an air outlet of the fan (5) is connected with the sealing detection box (2) and is arranged toward the wind detector (4), a plurality of vertical rods (6) distributed in a circular array are arranged on the top of the winding disk (3), a feeding slot (7) for inserting fabric is opened on the sealing detection box (2), and the plurality of vertical rods (6) are slidably connected to the sealing detection box (2). The winding disk (3) is movably arranged on the winding disk (3), the winding disk (3) is provided with a first driving member for driving the vertical rod (6) to slide, the vertical rod (6) is provided with a clamping member for clamping the end of the cloth, the vertical rod (6) is inserted into the feed trough (7), the bottom plate (1) is provided with a tensioning member for tensioning the cloth, the tensioning member includes a plurality of tensioning plates (8), the plurality of tensioning plates (8) are slidably arranged on the bottom plate (1), a tensioning roller (11) is rotatably arranged on the tensioning plate (8), and the cloth is sequentially wound around the plurality of tensioning rollers (11).

2. The air permeability detection device for protective clothing production according to claim 1, characterized in that: The clamping member comprises a clamping plate (13) and a clamping spring (14); a first vertical groove (15) is provided on the vertical rod (6); a mounting groove (16) is provided on the side wall of the first vertical groove (15); the clamping spring (14) is connected in the mounting groove (16); one end of the clamping spring (14) is connected to the clamping plate (13); and the clamping plate (13) is pressed against the side wall of the first vertical groove (15).

3. The air permeability detection device for protective clothing production according to claim 2, characterized in that: The first driving member comprises an electromagnet (17), wherein the electromagnet (17) is arranged in the sealing detection box (2), and the winding disk (3) is provided with T-shaped slots (18) corresponding to the plurality of vertical rods (6) one by one. The bottom of the vertical rod (6) is connected with a T-shaped block (19), wherein the T-shaped block (19) is an iron block, and the T-shaped block (19) is inserted into the T-shaped slot (18) and slidably cooperates with the T-shaped slot (18). A tension spring (20) is connected to the side wall of the T-shaped slot (18), and one end of the tension spring (20) is connected to the T-shaped block (19). When the electromagnet (17) is energized, the electromagnet (17) adsorbs the T-shaped block (19), and the vertical rod (6) is inserted into the feed trough (7).

4. The air permeability detection device for protective clothing production according to claim 3, characterized in that: The clamping plate (13) is an arc-shaped plate, a second groove (21) is provided on the bottom wall of the feed groove (7), a shifting block (22) is slidably arranged in the second groove (21), a third groove (23) is provided on the side wall of the sealing detection box (2), the electromagnet (17) is installed at the bottom of the third groove (23), a mounting block (24) is slidably arranged in the third groove (23), and a first magnetic block (25) for adsorbing the T-shaped block (19) is embedded in the side wall of the mounting block (24) facing away from the electromagnet (17). ), a second magnetic block (26) is embedded on the top of the mounting block (24), a third magnetic block (27) which is magnetically repelled from the second magnetic block (26) is provided on the bottom wall of the shift block (22), a shift spring (28) is connected to the shift block (22), one end of the shift spring (28) is connected to the shift block (22), and the other end is connected to the side wall of the third groove (23), when the third magnetic block (27) is opposite to the second magnetic block (26), the shift block (22) extends out of the second groove (21).

5. The air permeability detection device for protective clothing production according to claim 4, characterized in that: The surfaces opposite to the T-block (19) and the mounting block (24) are both arc-shaped, a breaking groove (29) is provided at the bottom of the third groove (23), a breaking plate (30) is slidably arranged in the breaking groove (29), a breaking spring (31) is connected to the bottom of the breaking plate (30), a pull rope (32) is connected to the bottom of the breaking plate (30), one end of the pull rope (32) is connected to the shift block (22), when the top surface of the shift block (22) is flush with the notch of the second groove (21), the pull rope (32) is in a taut state, and the breaking plate (30) is located between the T-block (19) and the mounting block (24).

6. The air permeability detection device for protective clothing production according to claim 1, characterized in that: A forward and reverse motor (33) is arranged in the sealing box detection box, and an output shaft of the forward and reverse motor (33) is connected to a rotating rod, and the rotating rod is coaxially connected to the center of the winding disk (3).

7. The air permeability detection device for protective clothing production according to claim 6, characterized in that: A leak-proof plate (34) is slidably provided on the top of the sealing detection box (2), and the leak-proof plate (34) is connected to the tops of the plurality of vertical rods (6).

8. The air permeability detection device for protective clothing production according to claim 7, characterized in that: The sealing detection box (2) is provided with a driving cylinder (36), and the piston rod of the driving cylinder (36) is inserted into the sealing detection box (2) and connected to the anti-leakage plate (34).

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