A fabric air permeability detection device for bedding production

Abstract

The present invention relates to a fabric air permeability detection device for bedding production applied to the field of fabric detection technology, comprising a pressure storage cylinder and a detection and display controller installed on the pressure storage cylinder, the top end of the pressure storage cylinder is threadedly connected with a middle pressure-bearing sample cover matching therewith, the middle part of the middle pressure-bearing sample cover is penetrated by a detection and collision cylinder, the bottom end of the detection and collision cylinder is arranged in an opening shape, the middle part of the outer wall of the top end of the pressure storage cylinder is provided with a connecting cylinder hole matching the detection and collision cylinder, a pressure storage iron plate slidingly sealedly connected therewith is arranged in the pressure storage cylinder, a pair of pressure storage elastic ropes are fixedly connected between the pressure storage iron plate and the inner wall of the top end of the pressure storage cylinder, through the joint arrangement of the pressure storage cylinder, the detection and display controller, etc., after the fabric production is completed, the fabric air permeability detection can be completed quickly and accurately at the production site, without the need to frequently and repeatedly send the sample to the laboratory for detection, thereby not only improving the detection efficiency, but also saving time and manpower, and thus improving the production efficiency.

Description

Technical Field

[0001] The invention relates to a detection device, in particular to a fabric air permeability detection device for bedding production, which is applied in the technical field of fabric detection. Background Art

[0002] As people's living standards continue to improve, the requirements for the quality and comfort of bedding are also increasing. The breathability of bedding fabrics is one of the key factors affecting its comfort. Good breathability can ensure that the sweat and moisture produced by the human body during sleep can be discharged in time, maintaining a dry sleeping environment and improving sleep quality.

[0003] Although the breathability of fabrics is one of the key factors affecting the comfort of bedding, the higher the breathability, the better. Excessive breathability will reduce the warmth-keeping effect of bedding. Therefore, accurately testing the breathability of fabrics and selecting fabrics with appropriate breathability are crucial to the production of high-quality bedding.

[0004] The air permeability test of fabrics is usually carried out in laboratories, and the air permeability test devices are generally large in size, complex in structure and not easy to move. Every time a batch of fabrics is produced, the samples must be sent to the laboratory for testing, which is not only troublesome but also inefficient. Therefore, we propose a fabric air permeability test device for bedding production. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that each time a batch of fabrics is produced, the samples must be sent to a laboratory for testing, which is not only troublesome but also inefficient.

[0006] In order to solve the above problems, the present invention provides a fabric air permeability detection device for bedding production, comprising a pressure storage cylinder and a detection and display controller installed on the pressure storage cylinder, the top end of the pressure storage cylinder is threadedly connected with a middle pressure-bearing sample cover matching therewith, a detection cylinder is penetrated through the middle of the middle pressure-bearing sample cover, the bottom end of the detection cylinder is set in an opening shape, a connecting cylinder hole matching the detection cylinder is opened in the middle of the outer wall of the top end of the pressure storage cylinder, a pressure storage iron plate connected to the pressure storage cylinder in a sliding and sealing manner is arranged in the pressure storage cylinder, a pair of pressure storage elastic ropes are fixedly connected between the pressure storage iron plate and the top inner wall of the pressure storage cylinder, an electromagnet is fixedly installed on the inner wall of the bottom end of the pressure storage cylinder, a pressure sensor is fixedly installed on the inner wall of the top inner wall of the detection cylinder, an impact plate connected to the pressure storage cylinder in a sliding and sealing manner is arranged in the detection cylinder, and a pair of positioning support rods are arranged below the impact plate;

[0007] The detection and display controller is provided with a detection master control module, an analysis and display control module, a display screen module, and a control button. The control button is connected to the detection master control module signal, the detection master control module is connected to the electromagnet signal, the pressure sensor is connected to the analysis and display control module signal, and the analysis and display control module is connected to the display screen module signal.

[0008] In the above-mentioned fabric air permeability testing device for bedding production, after the fabric production is completed, the fabric air permeability test can be completed quickly and accurately at the production site, without the need to frequently and repeatedly send the samples to the laboratory for testing.

[0009] As a further improvement of the present application, the method for using the detection device comprises the following steps:

[0010] S1. When producing a certain type of fabric, after the first batch of fabric is produced, a piece of fabric of appropriate size is cut as a preliminary inspection sample, and the preliminary inspection sample is sent to the laboratory for air permeability testing. If the air permeability test is qualified, a round fabric matching the diameter of the pressure accumulator 101 is cut from the first batch of fabric as a standard sample;

[0011] S2. Rotate the middle pressure sample cover to separate it from the pressure storage cylinder, start the electromagnet, and move the pressure storage iron plate downward under the action of the magnetic attraction of the electromagnet, so that the pressure storage iron plate is adsorbed on the top of the electromagnet, and the pressure storage elastic rope is stretched, so that the standard sample is evenly laid on the top of the pressure storage cylinder, and the middle pressure sample cover is re-set on the top of the pressure storage cylinder, and the middle pressure sample cover is rotated until the middle pressure sample cover presses and fixes the standard sample, and the control button is pressed to send a command to the detection master control module to start the detection. After receiving the command, the detection master control module will turn off the electromagnet, causing the impact plate to hit the pressure sensor. The impact of the impact plate on the pressure sensor will cause the pressure sensor to be pressurized and detect pressure data. The pressure data detected by the pressure sensor will be transmitted to the analysis and display module, and the analysis and display module will send the maximum value of the pressure data to the display module, so that the display module displays the pressure data, and observe the pressure data displayed on the display module and record it as standard reference data;

[0012] S3. After the production of subsequent batches of fabrics is completed, a circular fabric matching the diameter of the pressure storage cylinder 101 is cut from the fabrics of the batch as a test sample, and the air permeability test of the test sample is performed with reference to step S2. After the test is completed, the pressure data displayed on the display module is observed and recorded as the test data;

[0013] S4. Compare the actual inspection data with the standard reference data to determine whether the air permeability of the actual inspection sample is qualified.

[0014] As a further improvement of the present application, the diameter of the pressure accumulator is 10-20 cm, and the length of the pressure accumulator is 20-30 cm.

[0015] As a further improvement of the present application, the bottom end of the impact cylinder is flush with the top inner wall of the middle pressure sample cover, and a pair of positioning support rods are fixedly installed on the inner walls on the left and right sides of the impact cylinder respectively. The positioning support rods are arranged in an L shape, and the end of the positioning support rods away from the inner wall of the impact cylinder is against the bottom end of the impact plate, which is conducive to the fixation of the sample.

[0016] As a further improvement of the present application, a pressure relief pipe is connected to the side wall of the measuring and impacting cylinder, and the pressure relief pipe is located below the impact plate. A pressure relief solenoid valve is arranged on the pressure relief pipe. The detection master control module is connected to the pressure relief pipe signal, and the analysis and display module is connected to the detection master control module signal. When the analysis and display module sends the pressure data to the display screen module, it will also send a signal to the detection master control module. After receiving the signal, the detection master control module will open the pressure relief solenoid valve for pressure relief. After the pressure relief, the impact plate will fall back under the action of gravity. In addition, after a certain period of time, the detection master control module will automatically close the pressure relief solenoid valve.

[0017] As a further improvement of the present application, a plurality of lower air guide holes are provided on the side wall of the pressure storage cylinder, the lower air guide holes are located below the pressure storage iron plate, and the top of the lower air guide holes is lower than the top of the electromagnet, and a plurality of upper air guide holes are provided on the top outer wall of the collision cylinder.

[0018] As another improvement of the present application, a times setting module is also provided on the detection and display controller, and the times setting module is connected to the detection master control module by signal, so that the detection device in the present invention can automatically perform multiple tests on the sample.

[0019] As another improvement supplement of the present application, a reminder is also provided on the pressure storage cylinder 101, and the detection master control module is connected to the reminder signal. After the number of detections reaches the set value, the detection master control module will start the reminder, causing the reminder to make a sound to remind relevant technical personnel.

[0020] As another improvement supplement of the present application, a drop-assisting block is fixedly connected to the middle part of the bottom end of the impact plate. The drop-assisting block is made of ferromagnetic material. When subsequent inspections are carried out, after the electromagnet is activated, the drop-assisting block will pull the impact plate downward under the action of magnetic attraction, ensuring that the impact plate can be accurately reset to the positioning support rod, thereby ensuring the accuracy of subsequent inspections.

[0021] To sum up, through the joint arrangement of the pressure storage cylinder, the medium pressure sample cover, the detection and display controller, etc., the detection device in the present invention has a simple structure, is easy to operate, has a small size, is easy to move and carry, and after the fabric production is completed, the fabric air permeability test can be completed quickly and accurately at the production site, without the need to frequently and multiple times send the sample to the laboratory for testing, which not only improves the detection efficiency, but also saves time and manpower, thereby improving production efficiency; and through the joint arrangement of the pressure relief pipe, the pressure relief solenoid valve, the number setting module, etc., the detection device in the present invention can automatically perform multiple tests on the sample, which can reduce the errors and uncertainties that may exist in a single test, thereby improving the accuracy and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present application;

[0023] Figure 2 This is a schematic cross-sectional view of the pressure accumulator in the first embodiment of the present application;

[0024] Figure 3 This is a schematic cross-sectional view of the side impact cylinder in the first embodiment of the present application;

[0025] Figure 4 This is a logic control block diagram of the detection and display controller in the first embodiment of the present application;

[0026] Figure 5 This is a pictographic demonstration diagram of testing a sample in the first embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the second embodiment of the present application;

[0028] Figure 7 This is a schematic cross-sectional view of the side impact cylinder in the second embodiment of the present application;

[0029] Figure 8 This is a logic control block diagram of the detection controller in the second embodiment of the present application.

[0030] Description of the numbers in the figure:

[0031] 101. Pressure storage cylinder; 102. Middle pressure sample cover; 103. Impact cylinder; 104. Connecting hole; 105. Pressure storage iron plate; 106. Pressure storage elastic rope; 107. Electromagnet; 108. Pressure sensor; 109. Impact plate; 110. Positioning support rod; 111. Pressure relief pipe; 112. Pressure relief solenoid valve; 113. Lower air guide hole; 114. Upper air guide hole; 115. Drop-aiding block; 116. Reminder; 002. Detection and display controller. DETAILED DESCRIPTION

[0032] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0033] The first implementation method:

[0034] Figure 1-5 The invention discloses a fabric air permeability detection device for bedding production, comprising a pressure storage cylinder 101 and a detection and display controller 002 installed on the pressure storage cylinder 101. The diameter of the pressure storage cylinder 101 is 10-20 cm, and the length of the pressure storage cylinder 101 is 20-30 cm. The top of the pressure storage cylinder 101 is threadedly connected with a matching middle pressure-bearing sample cover 102, and a detection cylinder 103 is provided through the middle of the middle pressure-bearing sample cover 102. The bottom end of the detection cylinder 103 is set in an open shape, and the bottom end of the detection cylinder 103 is flush with the top inner wall of the middle pressure-bearing sample cover 102. A connecting cylinder hole 104 matching the detection cylinder 103 is opened in the middle of the top outer wall of the pressure storage cylinder 101. A pressure storage iron plate 105 connected to the pressure storage cylinder 101 in a sliding and sealing manner is provided in the pressure storage cylinder 101. A pair of pressure storage elastic ropes 106 are fixedly connected between the pressure storage iron plate 105 and the top inner wall of the pressure storage cylinder 101. An electromagnet 107 is fixedly mounted on the inner wall of the bottom end of the cylinder 101, a pressure sensor 108 is fixedly mounted on the inner wall of the top end of the collision cylinder 103, an impact plate 109 is provided in the collision cylinder 103 and is slidably and sealedly connected thereto, a pair of positioning support rods 110 are provided below the impact plate 109, and the pair of positioning support rods 110 are respectively fixedly mounted on the inner walls on the left and right sides of the collision cylinder 103, the positioning support rods 110 are arranged in an L shape, and one end of the positioning support rods 110 away from the inner wall of the collision cylinder 103 abuts against the bottom end of the impact plate 109, the detection and display controller 002 is provided with a detection master control module, an analysis control and display module, a display screen module, and a control button, the control button is connected to the detection master control module signal, the detection master control module is connected to the electromagnet 107 signal, the pressure sensor 108 is connected to the analysis control and display module signal, and the analysis control and display module is connected to the display screen module signal.

[0035] See also Figure 1-5When producing a certain type of fabric, after the first batch of fabrics is produced, a piece of fabric of appropriate size is cut as a preliminary inspection sample, and the preliminary inspection sample is sent to the laboratory for air permeability testing. If the air permeability test is qualified, a round fabric matching the diameter of the pressure storage cylinder 101 is cut from the fabric of the batch as a standard sample, the middle pressure-bearing sample cover 102 is rotated to separate the middle pressure-bearing sample cover 102 from the pressure storage cylinder 101, and the electromagnet 107 is started to move the pressure storage iron plate 105 downward under the action of the magnetic attraction of the electromagnet 107, so that the pressure storage iron plate 105 is adsorbed on the top of the electromagnet 107, and the pressure storage elastic rope 106 is stretched, and the standard sample is evenly laid on the top of the pressure storage cylinder 101, and the middle pressure-bearing sample cover 102 is re-installed to The top of the pressure storage cylinder 101 is rotated, and the middle pressure sample cover 102 is rotated until the middle pressure sample cover 102 presses and fixes the standard sample, and the control button is pressed to send a command to the detection master control module to start the detection. After receiving the command, the detection master control module will close the electromagnet 107, causing the impact plate 109 to hit the pressure sensor 108. The impact of the impact plate 109 on the pressure sensor 108 will cause the pressure sensor 108 to be pressurized and detect pressure data. The pressure data detected by the pressure sensor 108 will be transmitted to the analysis and display module, and the analysis and display module will send the maximum value of the pressure data to the display module, so that the display module will display the pressure data, observe the pressure data displayed on the display module and record it as the standard reference data, and the electromagnet 107 When closed, the pressure-accumulating elastic rope 106 will rebound and shrink, driving the pressure-accumulating iron plate 105 to move upward. The upward movement of the pressure-accumulating iron plate 105 will squeeze the air above it, and the air will pass through the connecting tube hole 104 and the standard sample and enter the measuring cylinder 103, causing the impact plate 109 to be pushed upward and hit the pressure sensor 108. The stronger the air permeability of the fabric, the easier it is for the air to pass through the standard sample, and the faster the air passes through the standard sample, the greater the force of the impact plate 109 hitting the pressure sensor 108, and the greater the maximum pressure data detected by the pressure sensor 108. Conversely, the worse the air permeability of the fabric, the smaller the maximum pressure data detected by the pressure sensor 108, thereby achieving the purpose of detecting the air permeability of the fabric. After the production of the subsequent batch of fabrics is completed, a circular fabric that matches the diameter of the pressure accumulator 101 is cut from the fabrics of the batch as a test sample. Referring to the operation of testing the standard sample above, the air permeability of the test sample is tested. After the test is completed, the pressure data displayed on the display module is observed and recorded as the test data. The test data is compared with the standard reference data. If the difference between the actual test data and the standard reference data is within an acceptable error range (the error range can be set by technicians in this field according to actual conditions), it means that the air permeability of the tested batch of fabrics is qualified. If the difference between the actual test data and the standard reference data is too large and the actual test data is less than the standard reference data, it means that the air permeability of the tested batch of fabrics is unqualified and the air permeability is too low.If the difference between the actual test data and the standard reference data is too large and the actual test data is greater than the standard reference data, it means that the air permeability of the tested batch of fabrics is unqualified and the air permeability is too high. Therefore, through the joint arrangement of the pressure storage cylinder 101, the medium pressure sample cover 102, the detection and display controller 002, etc., the detection device in the present invention has a simple structure, convenient operation, small size, and is easy to move and carry. After the fabric is produced, the fabric air permeability test can be completed quickly and accurately at the production site, without the need to frequently and repeatedly send the sample to the laboratory for testing, thereby not only improving the detection efficiency, but also saving time and manpower, thereby improving production efficiency.

[0036] See also Figure 2-3 The bottom end of the collision cylinder 103 is flush with the top inner wall of the middle pressure sample cover 102, and a pair of positioning rods 110 are fixedly installed on the inner walls on the left and right sides of the collision cylinder 103. The positioning rods 110 are set to be L-shaped, and the end of the positioning rods 110 away from the inner wall of the collision cylinder 103 is against the bottom end of the impact plate 109, which is conducive to the fixation of the sample.

[0037] See also Figure 1-4 A pressure relief pipe 111 is connected to the side wall of the measuring and impacting cylinder 103, and the pressure relief pipe 111 is located below the impact plate 109. A pressure relief solenoid valve 112 is arranged on the pressure relief pipe 111. The detection master control module is connected with the pressure relief pipe 111 by signal, and the analysis and display module is connected with the detection master control module by signal. When the analysis and display module sends the pressure data to the display screen module, it will also send a signal to the detection master control module. After receiving the signal, the detection master control module will open the pressure relief solenoid valve 112 for pressure relief. After the pressure relief, the impact plate 109 will fall back downward under the action of gravity. In addition, after a certain period of time, the detection master control module will automatically close the pressure relief solenoid valve 112.

[0038] See also Figure 1-3 A plurality of lower air guide holes 113 are provided on the side wall of the pressure storage cylinder 101, and the lower air guide holes 113 are located below the pressure storage iron plate 105, and the top of the lower air guide holes 113 is lower than the top of the electromagnet 107, which is beneficial to the up and down movement of the pressure storage iron plate 105. A plurality of upper air guide holes 114 are provided on the top outer wall of the collision cylinder 103, which is beneficial to the up and down movement of the collision plate 109.

[0039] The second implementation method:

[0040] Figure 6-8A fabric air permeability detection device for bedding production is shown. Different from the first embodiment, a number setting module is also provided on the detection and display controller 002. The number setting module is connected to the detection master control module by signal. When testing a sample (whether a standard sample or an actual test sample), before starting the test, a technician in this field can set the number of tests through the number setting module. After the first test is completed, that is, after the detection master control module opens the pressure relief solenoid valve 112 to relieve pressure, the detection master control module will automatically start the electromagnet 107 again, so that the pressure storage iron plate 105 is adsorbed to the top of the electromagnet 107 again, and then the detection master control module will close the pressure relief solenoid valve 112. Then, the detection master control module will close the electromagnet 107 again to perform a second test, and then the analysis control and display module will output the second test result. In the process, the maximum value of the pressure data detected by the pressure sensor 108 is sent to the display screen module, so that the display screen module displays the pressure data (the pressure data obtained by the first detection will not be cleared, and the pressure data corresponding to the two detections will be displayed at the same time), and so on, until the number of detections reaches the set value, and then the technicians in this field can calculate the multiple pressure data displayed on the display screen module, calculate the average value of the pressure data, and use this average value as the standard reference data or actual inspection data to improve the accuracy of the detection. Therefore, through the joint setting of the pressure relief pipe 111, the pressure relief solenoid valve 112, the number setting module, etc., the detection device in the present invention can automatically perform multiple detections on the sample, which can reduce the errors and uncertainties that may exist in a single detection, and thus improve the accuracy and reliability of the detection results.

[0041] See also Figure 6 and Figure 8 A reminder 116 is also provided on the pressure accumulator 101. The detection master control module is connected with the reminder 116 signal. When the detection times reaches the set value, the detection master control module will start the reminder 116, so that the reminder 116 makes a sound to remind the relevant technicians.

[0042] See also Figure 7 A drop-assisting block 115 is fixedly connected to the middle of the bottom end of the impact plate 109. The drop-assisting block 115 is made of ferromagnetic material. When the subsequent detection is performed, after the electromagnet 107 is activated, the drop-assisting block 115 will pull the impact plate 109 downward under the action of the magnetic attraction, ensuring that the impact plate 109 can be accurately reset to the positioning support rod 110, thereby ensuring the accuracy of subsequent detection.

[0043] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A device for detecting the air permeability of fabrics used in bedding production. It is characterized in that The invention comprises a pressure storage cylinder (101) and a detection and display controller (002) installed on the pressure storage cylinder (101); the top end of the pressure storage cylinder (101) is threadedly connected with a middle pressure-bearing sample cover (102) matching therewith; a collision cylinder (103) is provided through the middle of the middle pressure-bearing sample cover (102); the bottom end of the collision cylinder (103) is arranged in an open shape; a connecting cylinder hole (104) matching the collision cylinder (103) is provided in the middle of the outer wall of the top end of the pressure storage cylinder (101); a pressure storage cylinder (101) is provided with a pressure-bearing sample cover (102) which is slidably sealed therewith. A pressure storage iron plate (105) is sealed and connected thereto, a pair of pressure storage elastic ropes (106) are fixedly connected between the pressure storage iron plate (105) and the top inner wall of the pressure storage cylinder (101), an electromagnet (107) is fixedly mounted on the bottom inner wall of the pressure storage cylinder (101), a pressure sensor (108) is fixedly mounted on the top inner wall of the collision detection cylinder (103), an impact plate (109) is provided in the collision detection cylinder (103) and is slidably and sealably connected thereto, and a pair of positioning support rods (110) are provided below the impact plate (109); The detection and display controller (002) is provided with a detection master control module, an analysis and display control module, a display screen module, and a control button, wherein the control button is connected to the detection master control module by signal, the detection master control module is connected to the electromagnet (107) by signal, the pressure sensor (108) is connected to the analysis and display control module by signal, and the analysis and display control module is connected to the display screen module by signal; A plurality of lower air guide holes (113) are provided on the side wall of the pressure storage cylinder (101), the lower air guide holes (113) are located below the pressure storage iron plate (105), and the top of the lower air guide holes (113) is lower than the top of the electromagnet (107), and a plurality of upper air guide holes (114) are provided on the outer wall of the top of the collision detection cylinder (103); The method for using the detection device comprises the following steps: S1. When producing a certain type of fabric, after the first batch of fabric is produced, a piece of fabric of a suitable size is cut as a preliminary test sample, and the preliminary test sample is sent to a laboratory for air permeability testing. If the air permeability test is qualified, a circular fabric matching the diameter of the pressure accumulator (101) is cut from the first batch of fabric as a standard sample; S2. Rotate the intermediate pressure sample cover (102) to separate the intermediate pressure sample cover (102) from the pressure storage cylinder (101), start the electromagnet (107), and move the pressure storage iron plate (105) downward under the action of the magnetic attraction of the electromagnet (107), so that the pressure storage iron plate (105) is adsorbed on the top of the electromagnet (107), and the pressure storage elastic rope (106) is stretched, and the standard sample is evenly laid on the top of the pressure storage cylinder (101), and the intermediate pressure sample cover (102) is re-installed on the top of the pressure storage cylinder (101), and the intermediate pressure sample cover (102) is rotated until the intermediate pressure sample cover (102) presses and fixes the standard sample, and presses Pressing the control button sends a command to the detection master control module to start the detection. After receiving the command, the detection master control module turns off the electromagnet (107), causing the impact plate (109) to impact the pressure sensor (108). The impact of the impact plate (109) on the pressure sensor (108) causes the pressure sensor (108) to be subjected to pressure and detect pressure data. The pressure data detected by the pressure sensor (108) is transmitted to the analysis control and display module. The analysis control and display module sends the maximum value of the pressure data to the display screen module, causing the display screen module to display the pressure data. The pressure data displayed by the display screen module is observed and recorded as standard reference data. S3, after the production of the subsequent batch of fabrics is completed, a circular fabric matching the diameter of the pressure storage cylinder (101) is cut from the fabrics of the batch as a test sample, and the air permeability test of the test sample is performed with reference to step S2. After the test is completed, the pressure data displayed on the display module is observed and recorded as the test data; S4. Compare the actual inspection data with the standard reference data to determine whether the air permeability of the actual inspection sample is qualified.

2. A device for detecting air permeability of fabrics for bedding production according to claim 1, It is characterized in that The diameter of the pressure storage cylinder (101) is 10-20 centimeters, and the length of the pressure storage cylinder (101) is 20-30 centimeters.

3. A device for detecting air permeability of fabrics for bedding production according to claim 1, It is characterized in that The bottom end of the collision cylinder (103) is flush with the top inner wall of the middle pressure-bearing sample cover (102), and a pair of positioning rods (110) are fixedly mounted on the inner walls of the left and right sides of the collision cylinder (103), respectively. The positioning rods (110) are arranged in an L shape, and one end of the positioning rods (110) away from the inner wall of the collision cylinder (103) abuts against the bottom end of the collision plate (109).

4. The air permeability detection device for bedding production according to claim 1, It is characterized in that A pressure relief pipe (111) is connected to the side wall of the collision detection tube (103), the pressure relief pipe (111) is located below the collision plate (109), a pressure relief solenoid valve (112) is provided on the pressure relief pipe (111), the detection master control module is connected to the pressure relief pipe (111) by signal, and the analysis control and display module is connected to the detection master control module by signal.

5. The air permeability detection device for bedding production according to claim 1, It is characterized in that The detection and display controller (002) is also provided with a times setting module, and the times setting module is connected to the detection master control module by signal.

6. A device for detecting air permeability of fabrics for bedding production according to claim 1, It is characterized in that The pressure storage cylinder (101) is also provided with a reminder (116), and the detection master control module is signal-connected to the reminder (116).

7. A device for detecting air permeability of fabrics for bedding production according to claim 1, It is characterized in that A drop-assisting block (115) is fixedly connected to the middle of the bottom end of the impact plate (109), and the drop-assisting block (115) is made of ferromagnetic material.

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