Automatic leather air permeability tester

Abstract

The present invention seeks protection for an automated leather air permeability tester, the key points of which are that it includes a frame, the frame is equipped with a vacuum chamber and an air pump connected to the vacuum chamber, the vacuum chamber is connected to a digital vacuum pressure gauge, the vacuum chamber is detachably connected to a mounting frame for fixing leather, the frame is equipped with a first support rod provided below the mounting frame and supporting the mounting frame, and a second support rod provided above the mounting frame and used to fix the mounting frame, the mounting frame includes two first clamping assemblies vertically arranged on the left and right sides, the second support rod can drive one of the first clamping assemblies to move, the present invention changes the tightness of the leather by using two first clamping assemblies with a variable distance, compared with the existing technology, it can simulate the state of the leather after being made into different leather garments, and then detect the air permeability of the leather at different tightnesses, so that leather of different properties can be applied to the production of different leather garments.

Description

Technical Field

[0001] The present invention relates to an air permeability tester, and more particularly to an automatic leather air permeability tester. Background Art

[0002] Genuine leather has an "anti-reverse performance", that is, if saliva is blown on the back, leakage will occur on the front. Leather clothing made of genuine leather not only has a very obvious cold-proof effect, but also has good breathability. However, genuine leather will have different breathability due to different production processes. Therefore, it is necessary to test the breathability of the finished genuine leather before production to determine the type of leather clothing that is suitable. The current breathability test on the market usually puts the leather in a relaxed state, but in actual use, the leather will be tightened due to the production process. The breathability of the tightened leather is quite different from that of the relaxed leather. Therefore, a device that can detect the breathability of leather at different tightness is needed.

[0003] In view of the above reasons, how to detect the air permeability of leather at different tightness is exactly the problem considered in this application. Summary of the Invention

[0004] Aiming at the deficiencies in the existing technology, an automatic leather air permeability tester is provided, which can detect the air permeability of leather at different tightness.

[0005] To achieve the above-mentioned object, the following technical solution is provided: an automated leather air permeability tester, comprising a frame, a vacuum chamber and an air pump connected to the vacuum chamber installed on the frame, a digital vacuum pressure gauge connected to the vacuum chamber, a mounting frame for fixing leather detachably connected to the vacuum chamber, a first support rod provided below the mounting frame for supporting the mounting frame, and a second support rod provided above the mounting frame for fixing the mounting frame installed on the frame;

[0006] The mounting frame includes two first clamping assemblies vertically arranged on the left and right sides, the second support rod can drive one of the first clamping assemblies to move to change the tightness of the leather, the first clamping assembly includes two relatively arranged first clamping plates, the upper and lower sides of the first clamping assembly are respectively fixedly connected to two elastic clamping assemblies, the elastic clamping assembly includes two symmetrically arranged elastic members, the two elastic clamping assemblies are fixedly connected to the second clamping assembly on one side away from the first clamping assembly, the two second clamping assemblies are arranged on the upper and lower sides of the mounting frame, the second clamping assembly includes two symmetrically arranged second clamping plates and two symmetrically arranged third clamping plates, the second clamping plate is fixedly connected to a spring which is also fixedly connected to the third clamping plate, and the second clamping plate and the third clamping plate are both semicircularly concave on the side away from the elastic clamping assembly;

[0007] The two first clamping plates are connected with two first screws for adjusting the tightness, the two second clamping plates are connected with second screws for adjusting the tightness, and the two third clamping plates are connected with third screws for adjusting the tightness;

[0008] The second clamping plate is fixedly connected to the first clamping plate on the left, and the third clamping plate is fixedly connected to the first clamping plate on the right. The semicircular inner recess of the third clamping plate is provided with an internal thread, and the second support rod is provided with an external thread engaged with the internal thread to drive the third clamping plate to move. The second support rod is rotatably connected to the frame, and the frame is also equipped with an interference member for fixing the position of the second clamping plate, and the interference member interferes with the first screw and the second screw on the far left of the mounting frame.

[0009] In summary, the above technical solution has the following beneficial effects: the properties of genuine leather in different parts are different. After processing, the genuine leather will be cut into different leathers according to the parts. The leather commonly used in luxury leather clothing is back leather. The back leather after cutting is approximately rectangular. Therefore, the installation frame is designed to be rectangular. Each pair of clamping components consists of two clamping plates and screws. The two first clamping components are used to clamp the left and right sides of the leather. At the same time, the first screws can be used to adjust the spacing to accommodate leather of different thicknesses. At the same time, the first screws can be completely removed to separate the two first clamping plates. The structure of the second clamping component is similar.

[0010] The second clamping assembly can clamp the upper and lower sides of the leather, or it can drive the elastic clamping assembly to clamp the upper and lower sides of the leather instead of clamping the leather directly. At the same time, the second clamping plate in the second clamping assembly maintains a constant relative position. The second clamping plate is connected to the third clamping plate by a spring. This ensures that the distance between the second clamping plate and the third clamping plate can be changed while preventing the third clamping plate from freely changing its position when the mounting frame is mounted on the frame, thereby preventing installation difficulties.

[0011] The internal thread on the third clamping plate is engaged with the external thread on the second support rod, so that the third clamping plate can be horizontally moved relative to the second clamping plate by rotating the second support rod. During the movement, the interference piece will interfere with the first screw and the second screw on the leftmost side of the mounting frame, thereby preventing the second clamping plate from moving horizontally. The two elastic members in the elastic clamping assembly will not be torn off. In this way, the distance between the two sets of first clamping assemblies can be changed, while ensuring the clamping effect, so that the leather can be tightened to different degrees according to the distance between the two sets of first clamping assemblies, so that the air permeability of the leather at different tightness can be tested by a vacuum chamber, an air pump and a digital vacuum pressure gauge.

[0012] The following actions are performed during detection:

[0013] After the installation frame is set up, the digital vacuum pressure gauge records the current pressure value;

[0014] The vacuum pump was turned on to pump air at a rate of 400 ml / min for 15 seconds;

[0015] The digital vacuum pressure gauge records the pressure change, and when it reaches the initial pressure value, records the time;

[0016] If the digital vacuum pressure gauge cannot return to the initial value within 15 minutes, the pressure change between 5 and 10 minutes will be displayed;

[0017] The air increase in the test chamber is calculated using the ideal gas formula PV=NRT;

[0018] The present invention changes the tightness of leather by using two first clamping components with variable distances. Compared with the existing technology, it can simulate the state of leather after being made into different leather garments, and then detect the air permeability of leather at different tightness, so that leather with different properties can be applied to the production of different leather garments, preventing expensive genuine leather from being wasted due to material incompatibility when making leather garments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of an automated leather air permeability tester;

[0020] Figure 2 is a cross-sectional view of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the first mounting plate on the side away from the vacuum chamber;

[0022] Figure 4 This is a schematic structural diagram of the first mounting plate close to the vacuum chamber;

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the installation frame;

[0024] Figure 6 is a cross-sectional view of the mounting frame;

[0025] Figure 7 A cross-sectional view of an extruded part.

[0026] Reference numerals: 1, frame; 2, vacuum chamber; 3, vacuum pump; 4, digital vacuum pressure gauge; 5, mounting frame; 6, first mounting plate; 7, second mounting plate;

[0027] 11. First support rod; 12. Second support rod; 13. Extrusion member; 14. Interference member;

[0028] 121. Fourth transmission gear; 122. Second limiting member;

[0029] 131. Extrusion head; 132. Connecting shaft; 133. Second transmission gear; 134. First stopper;

[0030] 51. First clamping assembly; 52. Elastic clamping assembly; 53. Second clamping assembly; 54. Spring;

[0031] 511. First clamping plate; 512. First screw;

[0032] 521. Elastic member; 522. Elastic cushion;

[0033] 531, second clamping plate; 532, third clamping plate; 533, second screw; 534, third screw; 535, semicircular concave; 536, internal thread; 537, external thread;

[0034] 61. First transmission assembly; 62. First empty slot; 63. Two-way electric telescopic rod; 64. Second transmission assembly; 65. Second empty slot; 66. One-way electric telescopic rod;

[0035] 611, first motor; 612, first synchronous belt; 613, first transmission shaft; 614, first transmission gear; 615, first reduction gear;

[0036] 631, first push head; 632, first switch;

[0037] 641, second motor; 642, second synchronous belt; 643, second transmission shaft; 644, third transmission gear; 645, second reduction gear;

[0038] 661, second push head; 662, second switch;

[0039] 71. The third empty slot; 72. The fourth empty slot. DETAILED DESCRIPTION

[0040] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0041] Reference Figure 1-7 As shown, the automated leather air permeability tester includes a frame 1, the frame 1 is equipped with a vacuum chamber 2 and an air pump 3 connected to the vacuum chamber 2, the vacuum chamber 2 is connected to a digital vacuum pressure gauge 4, the vacuum chamber 2 is detachably connected to a mounting frame 5 for fixing leather, and the frame 1 is equipped with a first support rod 11 provided below the mounting frame 5 and supporting the mounting frame 5, and a second support rod 12 provided above the mounting frame 5 and used to fix the mounting frame 5;

[0042] The mounting frame 5 includes two first clamping assemblies 51 vertically arranged on the left and right sides, and the second support rod 12 can drive one of the first clamping assemblies 51 to move to change the tightness of the leather, the first clamping assembly 51 includes two first clamping plates 511 arranged opposite to each other, and the upper and lower sides of the first clamping assembly 51 are fixedly connected to two elastic clamping assemblies 52 respectively, the elastic clamping assembly 52 includes two symmetrically arranged elastic members 521, the two elastic clamping assemblies 52 are fixedly connected to the second clamping assembly 53 on the side away from the first clamping assembly 51, and the two second clamping assemblies 53 are arranged on the upper and lower sides of the mounting frame 5, the second clamping assembly 53 includes two symmetrically arranged second clamping plates 531 and two symmetrically arranged third clamping plates 532, the second clamping plate 531 is fixedly connected to a spring 54 which is also fixedly connected to the third clamping plate 532, and the second clamping plate 531 and the third clamping plate 532 are both semicircular concave 535 on the side away from the elastic clamping assembly 52;

[0043] The two first clamping plates 511 are connected to two first screws 512 for adjusting the tightness, the two second clamping plates 531 are connected to second screws 533 for adjusting the tightness, and the two third clamping plates 532 are connected to third screws 534 for adjusting the tightness;

[0044] The second clamping plate 531 is fixedly connected to the first clamping plate 511 on the left side, and the third clamping plate 532 is fixedly connected to the first clamping plate 511 on the right side. An internal thread 536 is provided on the semicircular recess 535 of the third clamping plate 532. An external thread 537 is provided on the second support rod 12 to engage with the internal thread 536 to drive the third clamping plate 532 to move. The second support rod 12 is rotatably connected to the frame 1. The frame 1 is also equipped with an abutment 14 for fixing the position of the second clamping plate 531. The abutment 14 abuts the first screw 512 and the second screw 533 on the far left of the mounting frame 5.

[0045] Genuine leather has different properties in different parts. After processing, the leather will be cut into different types of leather according to the parts. The leather commonly used in luxury leather clothing is back leather. The back leather after cutting is approximately rectangular. Therefore, the mounting frame 5 is designed to be rectangular. Each pair of clamping components consists of two clamping plates and screws. The two first clamping components 51 are used to clamp the left and right sides of the leather. At the same time, the first screws 512 can be used to adjust the spacing to accommodate leather of different thicknesses. At the same time, the first screws 512 can be completely removed to separate the two first clamping plates 511. The structure of the second clamping component 53 is similar.

[0046] The second clamping assembly 53 can clamp the upper and lower sides of the leather, or it can drive the elastic clamping assembly 52 to clamp the upper and lower sides of the leather instead of clamping the leather directly. At the same time, the second clamping plate 531 in the second clamping assembly 53 remains in a fixed relative position. The second clamping plate 531 is connected to the third clamping plate 532 by the spring 54. This ensures that the distance between the second clamping plate 531 and the third clamping plate 532 can be changed while preventing the third clamping plate 532 from freely changing its position when the mounting frame 5 is mounted on the frame 1, which would cause installation difficulties.

[0047] The internal thread 536 on the third clamping plate 532 is engaged with the external thread 537 on the second support rod 12, so that the third clamping plate 532 can be horizontally moved relative to the second clamping plate 531 by rotating the second support rod 12. During the movement, the abutment 14 will abut the first screw 512 and the second screw 533 on the leftmost side of the mounting frame 5, thereby preventing the second clamping plate 531 from moving horizontally. The two elastic members 521 in the elastic clamping assembly 52 will not be torn off. In this way, the distance between the two sets of first clamping assemblies 51 can be changed, while the clamping effect is guaranteed, so that the leather can be tightened to different degrees according to the distance between the two sets of first clamping assemblies 51, so that the air permeability of the leather at different tightness can be tested by the vacuum chamber 2, the vacuum pump 3 and the digital vacuum pressure gauge 4.

[0048] The following actions are performed during detection:

[0049] After the installation frame 5 is set up, the digital vacuum pressure gauge 4 records the current pressure value;

[0050] The vacuum pump 3 is turned on to pump air at a rate of 400 ml / min for 15 seconds;

[0051] The digital vacuum pressure gauge 4 records the pressure value change, and when it reaches the initial pressure value, records the time;

[0052] If the digital vacuum pressure gauge 4 cannot return to the initial value within 15 minutes, the pressure change between 5 and 10 minutes will be displayed;

[0053] The air increase in the test chamber is calculated using the ideal gas formula PV=NRT;

[0054] The present invention changes the tightness of the leather by using two first clamping components 51 with a variable distance. Compared with the existing technology, it can simulate the state of leather after being made into different leather garments, and then detect the air permeability of the leather at different tightness, so that leather with different properties can be applied to the production of different leather garments, preventing expensive genuine leather from being wasted due to material incompatibility when making leather garments.

[0055] Furthermore, the elastic member 521 is fixedly connected to an elastic pad 522. When the elastic member 521 is moved by the third clamping plate 532, it will be stretched to a large extent. In order to prevent the elastic member 521 from exerting excessive local tension on the leather during stretching, the elastic pad 522 is provided as a buffer to evenly distribute the force on the leather and prevent it from being torn.

[0056] Furthermore, two extrusion pieces 13 for squeezing the elastic clamping assembly 52 are slidably connected to the frame 1. The extrusion piece 13 is fixedly connected to a connecting shaft 132 and a protruding extrusion head 131. The two extrusion pieces 13 are respectively arranged corresponding to the two elastic clamping assemblies 52. The extrusion head 131 can rotate around the connecting shaft 132 under the drive of the connecting shaft 132. When the extrusion piece 13 rotates, the extrusion head 131 gradually conflicts with the elastic piece 521 in the elastic clamping assembly 52, and then squeezes the elastic piece 521, so that the elastic piece 521 drives the elastic cushion 522 to squeeze the elastic cushion 522 on the other side, thereby preventing the elastic clamping assembly 52 from leaking during operation. At the same time, it can also increase the friction between the elastic cushion 522 and the leather, preventing the leather from moving during operation. When it is necessary to change the tightness of the leather or remove the mounting frame 5, it is necessary to first rotate the extrusion piece 13 in the opposite direction so that the extrusion piece 13 no longer squeezes the elastic clamping assembly 52, and then move the third clamping plate 532 to change the tightness of the leather or remove the mounting plate.

[0057] Furthermore, the frame 1 is further provided with a first mounting plate 6. A first transmission assembly 61 for driving the connecting shaft 132 to rotate is fixedly connected to the first mounting plate 6 on a side away from the vacuum chamber 2. The first transmission assembly 61 includes a first motor 611. The first motor 611 is connected to a first synchronous belt 612. The first synchronous belt 612 is further connected to a first transmission shaft 613. The first transmission shaft 613 is fixedly connected to a first transmission gear 614. The first motor 611 is used to drive the first transmission gear 614 to rotate. The first transmission gear 614 is meshed and connected to two first reduction gears 615.

[0058] The first mounting plate 6 is further provided with two first slots 62 for vertically sliding the extrusion member 13. A second transmission gear 133 is provided on the side of the extrusion member 13 close to the first transmission assembly 61, which is engaged with the first reduction gear 615 and fixedly connected to the connecting shaft 132. The first reduction gear 615 and the second transmission gear 133 are arranged obliquely.

[0059] The first transmission assembly 61 is driven by a motor and drives the extrusion piece 13 to rotate through the connecting shaft 132, so that the extrusion piece 13 can be automatically controlled to squeeze or release the elastic piece 521 during operation. The first reduction gear 615 engaged with the second transmission gear 133 is set obliquely, so that the moving direction of the extrusion piece 13 and the setting direction are not in a straight line. This not only does not hinder the vertical movement of the extrusion piece 13, but also prevents the extrusion piece 13 from excessively moving toward the first reduction gear 615, causing the first reduction gear 615 and the second transmission gear 133 to squeeze each other and be damaged.

[0060] Furthermore, a bidirectional electric telescopic rod 63 is provided on the side of the first mounting plate 6 close to the vacuum chamber 2. The telescopic end of the bidirectional electric telescopic rod 63 is fixedly connected to a first pusher head 631 with an arc-shaped concave top. The bidirectional electric telescopic rod 63 is electrically connected to a first switch 632 installed on the side of the first mounting plate 6 away from the vacuum chamber 2.

[0061] The bidirectional electric telescopic rod 63 can synchronously drive the two extrusion members 13 away from the mounting frame 5. Since the connecting shaft 132 is cylindrical, an arc-shaped concave first pushing head 631 is provided to push the connecting shaft 132, so as to prevent the connecting shaft 132 from loosening during the movement. The first switch 632 is provided on the side of the first mounting plate 6 away from the vacuum chamber 2 for convenient control, preventing the extrusion member 13 from being driven to move while it is still rotating. After both extrusion members 13 are moved away from the mounting frame 5, the mounting frame 5 can be easily removed.

[0062] Furthermore, a second transmission assembly 64 for driving the second support rod 12 to rotate is fixedly connected to the side of the first mounting plate 6 away from the vacuum chamber 2. The second transmission assembly 64 includes a second motor 641. The second motor 641 is connected to a second synchronous belt 642. The second synchronous belt 642 is further connected to a second transmission shaft 643. The second transmission shaft 643 is fixedly connected to a third transmission gear 644. The second motor 641 is used to drive the second transmission gear 133 to rotate. The second transmission gear 133 is meshed with a second reduction gear 645.

[0063] The first mounting plate 6 is further provided with a second slot 65 for vertically sliding the second support rod 12 on a side away from the vacuum chamber 2. A fourth transmission gear 121 is provided on the side of the second support rod 12 close to the second transmission assembly 64, meshing with the second reduction gear 645 and fixedly connected to the connecting shaft 132. The second reduction gear 645 and the fourth transmission gear 121 are arranged obliquely.

[0064] The second transmission assembly 64 is driven by a motor and drives the second support rod 12 to rotate, so that the third clamping plate 532 can be automatically controlled to move away from or close to the second clamping plate 531, thereby controlling the tightness of the leather. The second reduction gear 645 engaged with the third transmission gear 644 is set obliquely, so that the moving direction of the second support rod 12 and the setting direction are not in a straight line. This not only does not hinder the vertical movement of the second support rod 12, but also prevents the second support rod 12 from excessively moving toward the second reduction gear 645, causing the second reduction gear 645 and the fourth transmission gear 121 to squeeze each other and be damaged.

[0065] Furthermore, a one-way electric telescopic rod 66 is provided on the side of the first mounting plate 6 close to the vacuum chamber 2. The telescopic end of the one-way electric telescopic rod 66 is fixedly connected to a second pusher head 661 with an arc-shaped concave top. The one-way electric telescopic rod 66 is electrically connected to a second switch 662 installed on the side of the first mounting plate 6 away from the vacuum chamber 2.

[0066] The one-way electric telescopic rod 66 can drive the second support rod 12 away from the mounting frame 5. Since the second support rod 12 is cylindrical, an arc-shaped concave second pushing head 661 is provided to push the connecting shaft 132, so as to prevent the second support rod 12 from loosening during the movement. The second switch 662 is arranged on the side of the first mounting plate 6 away from the vacuum chamber 2 for convenient control, preventing the second support rod 12 from being driven to move while it is still rotating. After the second support rod 12 moves away from the mounting frame 5, the mounting frame 5 can be disassembled.

[0067] Furthermore, a second mounting plate 7 is provided on the side of the frame 1 away from the first mounting plate 6. The second mounting plate 7 is provided with a fourth slot 72 for sliding the second support rod 12 and two third slots 71 for sliding the extrusion member 13. The extrusion member 13 is located on one side of the second mounting plate 7 and is fixedly connected to a first stopper 134 for preventing the extrusion member 13 from detaching. The second support rod 12 is located on one side of the second mounting plate 7 and is fixedly connected to a second stopper 122 for preventing the second support rod 12 from detaching.

[0068] The third slot 71 arranged at the same level as the first slot 62 and the first limit member 134 arranged on one side of the extrusion member 13 can ensure that the extrusion member 13 will not separate from the frame 1 and slide stably. Similarly, the fourth slot 72 arranged at the same level as the second slot 65 and the second limit member 122 arranged on one side of the second support rod 12 can ensure that the second support rod 12 will not separate from the frame 1 and slide stably.

[0069] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that improvements and modifications that do not depart from the principles of the present invention are within the scope of protection of the present invention.

Claims

1. Automated leather air permeability tester, characterized in that, The invention comprises a frame (1), the frame (1) being equipped with a vacuum chamber (2) and an air pump (3) in communication with the vacuum chamber (2), the vacuum chamber (2) being connected to a digital vacuum pressure gauge (4), the vacuum chamber (2) being detachably connected to a mounting frame (5) for fixing leather, and the frame (1) being equipped with a second support rod (12) disposed above the mounting frame (5) and used for fixing the mounting frame (5); The mounting frame (5) comprises two first clamping assemblies (51) vertically arranged on the left and right sides for clamping the left and right sides of the leather, and two second clamping assemblies (53) arranged on the upper and lower sides for clamping the upper and lower sides of the leather, and the second support rod (12) is used to drive one of the first clamping assemblies (51) to move to change the tightness of the leather; The first clamping assembly (51) includes two first clamping plates (511) arranged opposite to each other, the second clamping assembly (53) includes two symmetrically arranged second clamping plates (531) and two symmetrically arranged third clamping plates (532), the second clamping plates (531) are fixedly connected to the left first clamping plate (511), and the third clamping plates (532) are fixedly connected to the right first clamping plate (511); The frame (1) is also provided with a resisting member (14) for fixing the position of the second clamping plate (531); the third clamping plate (532) is provided with an internal thread (536); the second support rod (12) is provided with an external thread (537) engaged with the internal thread (536) to drive the third clamping plate (532) to move; the second support rod (12) is rotatably connected to the frame (1).

2. The automatic leather air permeability tester according to claim 1, characterized in that: The upper and lower sides of the first clamping assembly (51) are respectively fixedly connected to two elastic clamping assemblies (52), and the elastic clamping assembly (52) includes two symmetrically arranged elastic members (521). The elastic clamping assembly (52) is fixedly connected to the second clamping assembly (53) on the side away from the first clamping assembly (51). The second clamping plate (531) is fixedly connected to a spring (54) fixedly connected to the third clamping plate (532). One side of the second clamping plate (531) and the third clamping plate (532) is in the shape of a semicircular concave (535), and the internal thread (536) is provided on the semicircular concave (535) of the third clamping plate (532); The two first clamping plates (511) are connected to two first screws (512) for adjusting the tightness, the two second clamping plates (531) are connected to second screws (533) for adjusting the tightness, and the two third clamping plates (532) are connected to third screws (534) for adjusting the tightness.

3. The automatic leather air permeability tester according to claim 2, characterized in that: The elastic member (521) is fixedly connected to an elastic cushion (522), and the frame (1) is also slidably connected to a first support rod (11) provided below the mounting frame (5) and supporting the mounting frame (5), and two extrusion members (13) for extruding the elastic clamping assembly (52), wherein the extrusion member (13) is fixedly connected to a connecting shaft (132) and a protruding extrusion head (131).

4. The automatic leather air permeability tester according to claim 3, characterized in that: The frame (1) is further provided with a first mounting plate (6), one side of the first mounting plate (6) is fixedly connected to a first transmission assembly (61) for driving the connecting shaft (132) to rotate, the first transmission assembly (61) includes a first motor (611), the first motor (611) is connected to a first synchronous belt (612), the first synchronous belt (612) is further connected to a first transmission shaft (613), the first transmission shaft (613) is fixedly connected to a first transmission gear (614), the first motor (611) is used to drive the first transmission gear (614) to rotate, and the first transmission gear (614) is meshedly connected to a first reduction gear (615).

5. The automatic leather air permeability tester according to claim 4, characterized in that: The first mounting plate (6) is further provided with two first empty slots (62) for the vertical sliding of the extrusion member (13); the extrusion member (13) is provided with a second transmission gear (133) meshing with the first reduction gear (615) and fixedly connected to the connecting shaft (132); the first reduction gear (615) and the second transmission gear (133) are arranged obliquely.

6. The automatic leather air permeability tester according to claim 4, characterized in that: One side of the first mounting plate (6) is also fixedly connected with a second transmission assembly (64) for driving the second support rod (12) to rotate, the second transmission assembly (64) includes a second motor (641), the second motor (641) is connected with a second synchronous belt (642), the second synchronous belt (642) is also connected with a second transmission shaft (643), the second transmission shaft (643) is fixedly connected with a third transmission gear (644), the second motor (641) is used to drive the second transmission gear (133) to rotate, the second transmission gear (133) is meshed with a second reduction gear (645), the first mounting plate (6) is also provided with a second slot (65) for allowing the second support rod (12) to slide vertically, the second support rod (12) is provided with a fourth transmission gear (121) meshed with the second reduction gear (645) and fixedly connected to the connecting shaft (132) on the side close to the second transmission assembly (64), the second reduction gear (645) and the fourth transmission gear (121) are arranged obliquely.

7. The automatic leather air permeability tester according to claim 4, characterized in that: A bidirectional electric telescopic rod (63) is provided on the other side of the first mounting plate (6); the telescopic end of the bidirectional electric telescopic rod (63) is fixedly connected to a first pushing head (631) with an arc-shaped concave top end; and the bidirectional electric telescopic rod (63) is electrically connected to a first switch (632) mounted on the first mounting plate (6).

8. The automatic leather air permeability tester according to claim 7, characterized in that: A one-way electric telescopic rod (66) is further provided on the other side of the first mounting plate (6); the telescopic end of the one-way electric telescopic rod (66) is fixedly connected to a second pusher head (661) with an arc-shaped concave top end; and the one-way electric telescopic rod (66) is electrically connected to a second switch (662) mounted on the first mounting plate (6).

9. The automatic leather air permeability tester according to claim 3, characterized in that: A second mounting plate (7) is further provided on the side of the frame (1) away from the first mounting plate (6); a fourth slot (72) for sliding the second support rod (12) and a third slot (71) for sliding the extrusion member (13) are provided on the second mounting plate (7); the extrusion member (13) is located on one side of the second mounting plate (7) and is fixedly connected to a first position-limiting member (134) for preventing the extrusion member (13) from being disengaged; and the second support rod (12) is located on one side of the second mounting plate (7) and is fixedly connected to a second position-limiting member (122) for preventing the second support rod (12) from being disengaged.

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