A device and method for testing tensile strength in nonwoven fabric production

Abstract

This invention discloses a tensile strength testing device and method for nonwoven fabric production, relating to the field of nonwoven fabric testing technology. The device comprises two placement platforms on which the nonwoven fabric to be tested is placed. A telescopic mechanism connected to the two placement platforms is provided on a base, along with a clamping mechanism. A second support plate is slidably connected to the other side of the base in a horizontal direction. A tensile testing mechanism is provided on the support frame to clamp both ends of the nonwoven fabric to be tested and perform vertical tensile strength testing. The invention utilizes the movement of the two protruding ends of a cam to contact abutment blocks. Each sliding rod on each side drives the clamping assembly to stretch the nonwoven fabric to be tested vertically, allowing the clamping assemblies on both sides to perform stable tensile motion on the nonwoven fabric. This results in relatively smooth changes in the stretching speed and tensile force of the nonwoven fabric, accurately detecting the tensile strength of the nonwoven fabric, determining its qualification, and improving the efficiency and accuracy of nonwoven fabric tensile strength testing.

Description

Technical Field

[0001] This invention relates to the field of nonwoven fabric testing technology, and in particular to a tensile strength testing device and method for nonwoven fabric production. Background Technology

[0002] With increasingly diverse user demands, many new types of nonwoven fabric products have emerged, such as hot-air probiotic spray nonwoven fabric, perforated nonwoven fabric, 3D nonwoven fabric, 3D perforated nonwoven fabric, hot-air airflow guiding layer nonwoven fabric, hot-air colored antibacterial nonwoven fabric, and 3D composite partitioned nonwoven fabric. Nonwoven fabrics are widely used in medical, industrial, and daily necessities. Daily necessities include children's diapers, panty liners, and sanitary napkins. When producing new nonwoven fabrics, it is necessary to conduct strict testing on various properties. Tensile strength is one of the core parameters for measuring product quality. Tensile strength includes indicators such as tensile strength and elongation at break. Poor tensile strength of nonwoven fabrics will affect the reliability of the product.

[0003] Currently, tensile strength testing of new nonwoven fabrics requires manual clamping, positioning, and stretching. The inherent uncertainties of manual operation can easily lead to testing errors, resulting in low efficiency and affecting the accuracy and consistency of test results. Existing tensile strength testing devices for nonwoven fabrics require clamping both ends, which can cause wrinkles and negatively impact the clamping effect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a tensile strength testing device and method for nonwoven fabric production that improves the efficiency and accuracy of tensile strength testing of nonwoven fabrics.

[0005] The technical solution adopted to solve the above technical problems is as follows: A fifth support plate is provided on one side of the base. Placement platforms are slidably connected to both sides of the fifth support plate in the horizontal direction. Multiple second sliding grooves are machined on the fifth support plate and are slidably connected to the placement platforms in the horizontal direction. The non-woven fabric to be tested is placed on the two placement platforms. A telescopic mechanism connected to the two placement platforms is provided on the base. A clamping mechanism for pressing the non-woven fabric to be tested on the two placement platforms is provided on the base. A second support plate is slidably connected to the other side of the base in the horizontal direction. A first sliding groove is provided on the second support plate. A sliding plate is slidably connected to the first sliding groove in the vertical direction. Two blocks are provided on one side of the sliding plate. A third motor is provided on the sliding plate. The output shaft of the third motor is fixedly connected to a contact plate. The two ends of the contact plate abut against the corresponding blocks. The contact plate is fixedly connected to a support frame. A tensile testing mechanism for clamping the two ends of the non-woven fabric to be tested and performing vertical tensile testing on the non-woven fabric to be tested is provided on the support frame.

[0006] Furthermore, a second motor is provided on the base, the output shaft of the second motor is fixedly connected to the lead screw, the lead screw is rotatably connected to the base, the second support plate is threadedly connected to the lead screw, a third guide rod is provided on both sides of the lead screw on the base, the second support plate is slidably connected to the third guide rod in the horizontal direction, and a base plate is provided on both sides of the lead screw on the base, each base plate is provided with a guide plate that is slidably connected to the second support plate in the horizontal direction.

[0007] Furthermore, a fourth electric cylinder is provided on the second support plate, and the output end of the fourth electric cylinder is fixedly connected to the slide plate.

[0008] Furthermore, each of the aforementioned placement platforms is provided with a first support plate and a second support plate, and a fifth support plate is machined with a plurality of second sliding grooves that are slidably connected to the first support plate and the second support plate in the horizontal direction. Each first support plate is provided with a plurality of first sliders, and each second support plate is provided with a plurality of second sliders. The fifth support plate is machined with a third sliding hole that is slidably connected to the first sliders in the horizontal direction, and a second sliding hole that is slidably connected to the second sliders in the horizontal direction.

[0009] Furthermore, the tensile testing mechanism comprises: a first gear rotatably mounted on a support frame; a first motor driving the first gear to rotate on the support frame; a second gear meshing with and transmitting transmission to the first gear rotatably mounted on a second support plate, the second gear being located below the first gear; a third gear meshing with and transmitting transmission to the second gear rotatably mounted on the support frame, the third gear being located below the second gear; a first connecting shaft rotatably mounted on the support frame; the third gear being fixedly connected to a cam via the first connecting shaft; sliding rods slidably connected horizontally on both sides of the cam on the support frame; each sliding rod having a contact block at one end that abuts against the cam; a clamping assembly for clamping the nonwoven fabric to be tested at the other end of each sliding rod; and a first spring on each sliding rod, one end of each first spring connected to the support frame, and the other end of each first spring connected to the contact block.

[0010] Furthermore, the clamping assembly comprises: a first support plate at the other end of the sliding rod, a first electric cylinder on the first support plate, the output end of the first electric cylinder being fixedly connected to the upper clamping plate, a plurality of first guide rods on the first support plate, the upper clamping plate being slidably connected to the plurality of first guide rods in a vertical direction, a lower clamping plate located below the upper clamping plate at the bottom of the first support plate, an upper rubber clamping pad at the bottom of the upper clamping plate, a lower rubber clamping pad at the top of the lower clamping plate, and the nonwoven fabric to be tested being clamped between the upper rubber clamping pad and the lower rubber clamping pad.

[0011] Furthermore, the clamping mechanism is as follows: a fourth support plate is fixedly installed on one side of the base, a fixed shaft is provided at the bottom of one side of the fourth support plate, the fixed shaft is rotatably connected to the second sleeve at the bottom of the third electric cylinder, the output end of the third electric cylinder is fixedly connected to the first sleeve, a third support plate is hinged to the top of the fourth support plate, two first connecting rods are provided on one side of the bottom of the third support plate, a rotating shaft is fixedly installed between the two first connecting rods, the rotating shaft is rotatably connected to the first sleeve, a second electric cylinder is provided on the third support plate, the output end of the second electric cylinder is fixedly connected to the clamping plate, the clamping plate is located above the non-woven fabric to be tested for clamping the non-woven fabric to be tested, and multiple second guide rods are provided at the top of the clamping plate, each second guide rod is slidably connected to the third support plate in the vertical direction.

[0012] Furthermore, the telescopic mechanism is as follows: a second fixed rod is provided inside the base, the second fixed rod is connected to one end of the first fixed rod through a tension spring, the other end of the first fixed rod is fixedly connected to one end of the second connecting rod, the other end of the second connecting rod is fixedly connected to one end of the first sliding rod, the other end of the first sliding rod is rotatably connected to the fifth support plate, the first sliding rod is fixedly connected to the connecting plate, and the connecting plate has first sliding holes machined on both sides to slide with the first slider.

[0013] A method for testing tensile strength in nonwoven fabric production includes the following steps:

[0014] S1, Press the non-woven fabric to be tested: Open the third support plate, place the non-woven fabric to be tested on the two placement platforms. Under the action of the telescopic mechanism, the two placement platforms are in the extended state, and the pressing clamping mechanism presses the non-woven fabric to be tested on the two placement platforms.

[0015] S2, Clamping the nonwoven fabric to be tested: The output shaft of the second motor drives the lead screw to rotate, the second support plate moves horizontally on the lead screw and two third guide rods, the second support plate drives the tensile testing mechanism on the support frame to move horizontally, the output end of the fourth electric cylinder drives the slide plate to move vertically on the first slide groove of the second support plate, the slide plate drives the tensile testing mechanism on the support frame to move vertically, adjust one side of the lower clamping plate to be located on the side of the placement table, the upper end surface of the lower clamping plate and the upper end surface of the contact block are on the same horizontal plane, in the initial state, the two ends of the cam protrusion are in contact with the contact blocks on both sides respectively, the output shaft of the first motor drives the first gear to rotate, the first gear meshes with the second gear to drive the second gear to rotate The first motor moves, the second gear meshes with the third gear to drive the third gear to rotate, the third gear drives the cam to rotate through the first connecting shaft, the two ends of the cam's protrusion move to separate from the contact block, the first motor stops moving, the sliding rod moves horizontally on the base, the sliding rod drives the lower clamping plate on the first support plate to move horizontally, each lower clamping plate pushes the placement stage on the second slide groove of the fifth support plate to move horizontally, under the action of the telescopic mechanism, the two placement stages are in a retracted state, the two ends of the non-woven fabric to be tested are respectively located between the lower clamping plate and the upper clamping plate, the output end of the first electric cylinder drives the upper clamping plate to move vertically on multiple first guide rods, the upper clamping plate and the lower clamping plate clamp one end of the non-woven fabric to be tested;

[0016] S3, Tensile strength test of the nonwoven fabric to be tested: The output shaft of the third motor drives the support frame to rotate 90°, the contact plate on the support frame rotates to contact the stop on the slide plate, the two clamping components move to the vertical direction, the output shaft of the first motor drives the first gear to rotate, the first gear meshes with the second gear to drive the second gear to rotate, the second gear meshes with the third gear to drive the third gear to rotate, the third gear drives the cam to rotate through the first connecting shaft, when the two ends of the cam protrusion move to contact the contact block respectively, the sliding rods on both sides move horizontally on the base respectively, and each sliding rod drives the clamping components to stretch the nonwoven fabric to be tested in the vertical direction, which is used to test the tensile strength of the nonwoven fabric to be tested and to determine the qualification of the nonwoven fabric to be tested.

[0017] Furthermore, the method for opening the third support plate in S1 is as follows: the output end of the third electric cylinder sequentially drives the third support plate to open via the first sleeve, rotating shaft, and first connecting rod; the method for the clamping mechanism in S1 to press the nonwoven fabric to be tested onto the two placement platforms is as follows: the output end of the third electric cylinder sequentially drives the third support plate to swing via the first sleeve, rotating shaft, and first connecting rod, and the third support plate moves to a position directly above the two placement platforms; the output end of the second electric cylinder drives the clamping plate to move vertically; multiple second guide rods on the top of the clamping plate move vertically downwards on the third support plate; the clamping plate... The nonwoven fabric to be tested is pressed on the two placement platforms; in S2, the two placement platforms are in a retracted state under the action of the telescopic mechanism as follows: the first and second support plates of the placement platforms move horizontally in the second slide groove of the fifth support plate, one of the first sliders on the first support plate slides in the first slide hole of the connecting plate, the other first slider on the first support plate slides horizontally in the third slide hole of the fifth support plate, the second plate of the placement platform slides in the second slide hole of the fifth support plate, and the connecting plate moves in sequence through the first slide rod, the second connecting rod, and the first fixed rod, and the tension spring retracts.

[0018] The beneficial effects of the present invention are as follows: (1) The present invention uses the two ends of the cam protrusion to move to abut against the abutment block respectively. The sliding rod on each side drives the non-woven fabric to be tested to be stretched in the vertical direction through the clamping assembly, so that the clamping assembly on both sides drives the non-woven fabric to perform stable stretching motion, so that the stretching speed and stretching force of the non-woven fabric change relatively smoothly, which is used to accurately detect the tensile strength of the non-woven fabric to be tested, judge the qualification of the non-woven fabric to be tested, and improve the efficiency and accuracy of the tensile strength test of the non-woven fabric; (2) Under the action of the telescopic mechanism, the two placement platforms are in a contracted state. The two ends of the non-woven fabric to be tested are respectively located between the lower clamping plate and the upper clamping plate. The upper clamping plate and the lower clamping plate clamp one end of the non-woven fabric to be tested. The non-woven fabric is not easy to wrinkle when clamped, and the clamping stability is high. The present invention is suitable for clamping non-woven fabrics of different specifications; (3) The present invention drives the clamping assembly to stretch the non-woven fabric to be tested in the vertical direction. When the non-woven fabric is in the vertical state, it is easier to observe the non-woven fabric. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of one embodiment of the tensile strength testing device for nonwoven fabric production according to the present invention.

[0020] Figure 2 yes Figure 1 A structural diagram from the first angle.

[0021] Figure 3 yes Figure 1 A structural diagram from a second angle.

[0022] Figure 4This is a structural diagram of the skateboard and support frame.

[0023] Figure 5 This is a schematic diagram of the components of a skateboard.

[0024] Figure 6 This is a structural diagram of the support frame and the contact plate.

[0025] Figure 7 This is a structural diagram of the fifth support plate and the placement platform.

[0026] Figure 8 This is a schematic diagram of the component structure of the fifth support plate.

[0027] Figure 9 This is a diagram showing the working state of two clamping components holding the nonwoven fabric to be tested.

[0028] Figure 10 This is a diagram showing the working state of the nonwoven fabric being tested for tensile strength.

[0029] Figure 11 This is a structural diagram of the tensile testing mechanism, the second support plate, and the support frame.

[0030] Figure 12 This is a schematic diagram of the tensile testing mechanism.

[0031] Figure 13 yes Figure 12 A schematic diagram of the structure without the support frame.

[0032] Figure 14 This is a schematic diagram of the clamping assembly.

[0033] Figure 15 This is a schematic diagram of the structure with the two clamping components in a vertical position.

[0034] Figure 16 This is a schematic diagram of the clamping mechanism.

[0035] Figure 17 This is a schematic diagram of the structure where the third support plate moves to directly above the two placement platforms.

[0036] Figure 18 This is a schematic diagram of the telescopic mechanism.

[0037] Figure 19 yes Figure 18 A schematic diagram of the structure without the fifth support plate.

[0038] Reference numerals: 1. Tensile testing mechanism; 101. First gear; 102. Second gear; 103. Third gear; 104. First motor; 105. First electric cylinder; 106. First guide rod; 107. Upper clamping plate; 108. Lower clamping plate; 109. First support plate; 110. First spring; 111. Sliding rod; 112. Cam; 113. First connecting shaft; 114. Contact block; 115. Upper rubber clamping pad; 116. Lower rubber clamping pad; 2. Second support plate; 3. Support frame; 4. Clamping mechanism; 401. Clamping plate; 402. Third support plate; 403. Second guide rod; 404. Second electric cylinder; 405. First connecting rod; 406. Rotating shaft; 407. First sleeve; 408. Fourth support 409. Support plate; 410. Third electric cylinder; 411. Fixed shaft; 412. Second sleeve; 5. Base; 6. Placement platform; 7. Telescopic mechanism; 701. First fixed rod; 702. Tension spring; 703. Second fixed rod; 704. Second connecting rod; 705. First sliding rod; 706. Connecting plate; 707. First sliding hole; 8. Second motor; 9. Lead screw; 10. Third guide rod; 11. Third motor; 12. Slide plate; 13. First sliding groove; 14. Fourth electric cylinder; 15. Base plate; 16. Guide plate; 17. Stop block; 18. Contact plate; 19. Fifth support plate; 20. Second sliding groove; 21. Second sliding hole; 22. Third sliding hole; 23. First support plate; 24. Second support plate; 25. First slider; 26. Second slider. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0040] like Figures 1 to 10 As shown, the tensile strength testing device for nonwoven fabric production in this embodiment is composed of a tensile testing mechanism 1, a second support plate 2, a support frame 3, a clamping mechanism 4, a base 5, a placement platform 6, a telescopic mechanism 7, a second motor 8, a lead screw 9, a third guide rod 10, a third motor 11, a sliding plate 12, a first sliding groove 13, a fourth electric cylinder 14, a base plate 15, a guide plate 16, a stop block 17, a contact plate 18, a fifth support plate 19, a second sliding groove 20, a second sliding hole 21, a third sliding hole 22, a first support plate 23, a second support plate 24, a first slider 25, and a second slider 26 connected together.

[0041] A fifth support plate 19 is provided on one side of the base 5. Placement platforms 6 are slidably connected to both sides of the fifth support plate 19 in the horizontal direction. Multiple second slide grooves 20 are machined on the fifth support plate 19 and are slidably connected to the placement platforms 6 in the horizontal direction. Non-woven fabric to be tested is placed on the two placement platforms 6. The length of the non-woven fabric to be tested is equal to or greater than the length of the two placement platforms 6. A telescopic mechanism 7 connected to the two placement platforms 6 is provided on the base 5. A clamping mechanism 4 for pressing the non-woven fabric to be tested on the two placement platforms 6 is provided on the base 5.

[0042] A second support plate 2 is slidably connected to the other side of the base 5 in the horizontal direction. A second motor 8 is provided on the base 5. The output shaft of the second motor 8 is fixedly connected to the lead screw 9. The lead screw 9 is rotatably connected to the base 5. The second support plate 2 is threadedly connected to the lead screw 9. A third guide rod 10 is provided on both sides of the lead screw 9 on the base 5. The second support plate 2 is slidably connected to the third guide rod 10 in the horizontal direction. A base plate 15 is provided on both sides of the lead screw 9 on the base 5. Each base plate 15 is provided with a guide plate 16 that is slidably connected to the second support plate 2 in the horizontal direction.

[0043] The second support plate 2 is provided with a first slide groove 13, and a slide plate 12 is slidably connected to the first slide groove 13 in the vertical direction. A fourth electric cylinder 14 is provided on the second support plate 2, and the output end of the fourth electric cylinder 14 is fixedly connected to the slide plate 12. Two stops 17 are provided on one side of the slide plate 12. A third motor 11 is provided on the slide plate 12, and the output shaft of the third motor 11 is fixedly connected to a contact plate 18. The two ends of the contact plate 18 respectively abut against the corresponding stops 17. The contact plate 18 is fixedly connected to the support frame 3. A tensile testing mechanism 1 is provided on the support frame 3 to clamp the two ends of the nonwoven fabric to be tested and to perform vertical tensile testing on the nonwoven fabric to be tested.

[0044] like Figure 7 , Figure 8 and Figure 19 As shown, each placement platform 6 is provided with a first support plate 23 and a second support plate 24 respectively. The fifth support plate 19 is machined with a plurality of second sliding grooves 20 that are slidably connected to the first support plate 23 and the second support plate 24 in the horizontal direction. Each first support plate 23 is provided with a plurality of first sliders 25 respectively. Each second support plate 24 is provided with a plurality of second sliders 26 respectively. The fifth support plate 19 is machined with a third sliding hole 22 that is slidably connected to the first sliders 25 in the horizontal direction. The fifth support plate 19 is machined with a second sliding hole 21 that is slidably connected to the second sliders 26 in the horizontal direction.

[0045] like Figures 11 to 15As shown, the tensile testing mechanism 1 is composed of a first gear 101, a second gear 102, a third gear 103, a first motor 104, a first electric cylinder 105, a first guide rod 106, an upper clamping plate 107, a lower clamping plate 108, a first support plate 109, a first spring 110, a sliding rod 111, a cam 112, a first connecting shaft 113, a contact block 114, an upper rubber clamping pad 115, and a lower rubber clamping pad 116.

[0046] The tensile testing mechanism 1 comprises: a first gear 101 rotatably mounted on a support frame 3; a first motor 104 driving the first gear 101 to rotate on the support frame 3; a second gear 102 meshing with the first gear 101 and rotating on a second support plate 2, the second gear 102 being located below the first gear 101; a third gear 103 meshing with the second gear 102 and rotating on the support frame 3, the third gear 103 being located below the second gear 102; and a first connecting shaft 113 rotatably mounted on the support frame 3. 03 is fixedly connected to the cam 112 via the first connecting shaft 113. Sliding rods 111 are slidably connected to the support frame 3 on both sides of the cam 112 in the horizontal direction. Each sliding rod 111 has a contact block 114 at one end that abuts against the cam 112, and a clamping component for clamping the non-woven fabric to be tested at the other end. Each sliding rod 111 is provided with a first spring 110. One end of each first spring 110 is connected to the support frame 3, and the other end of each first spring 110 is connected to the contact block 114.

[0047] like Figure 14 As shown, the clamping assembly consists of: a first support plate 109 at the other end of the sliding rod 111; a first electric cylinder 105 on the first support plate 109; the output end of the first electric cylinder 105 fixedly connected to the upper clamping plate 107; a plurality of first guide rods 106 on the first support plate 109; the upper clamping plate 107 and the plurality of first guide rods 106 slidingly connected in the vertical direction; a lower clamping plate 108 located below the upper clamping plate 107 at the bottom of the first support plate 109; an upper rubber clamping pad 115 at the bottom of the upper clamping plate 107; a lower rubber clamping pad 116 at the top of the lower clamping plate 108; and the nonwoven fabric to be tested is clamped between the upper rubber clamping pad 115 and the lower rubber clamping pad 116.

[0048] like Figures 16 to 17 As shown, the clamping mechanism 4 is composed of a clamping plate 401, a third support plate 402, a second guide rod 403, a second electric cylinder 404, a first connecting rod 405, a rotating shaft 406, a first sleeve 407, a fourth support plate 408, a third electric cylinder 409, a fixed shaft 410, and a second sleeve 411.

[0049] The clamping mechanism 4 consists of: a fourth support plate 408 fixedly installed on one side of the base 5; a fixed shaft 410 is provided at the bottom of one side of the fourth support plate 408; the fixed shaft 410 is rotatably connected to the second sleeve 411 at the bottom of the third electric cylinder 409; the output end of the third electric cylinder 409 is fixedly connected to the first sleeve 407; a third support plate 402 is hinged to the top of the fourth support plate 408; two first connecting rods 405 are provided on one side of the bottom of the third support plate 402; a rotating shaft 406 is fixedly installed between the two first connecting rods 405; the rotating shaft 406 is rotatably connected to the first sleeve 407; a second electric cylinder 404 is provided on the third support plate 402; the output end of the second electric cylinder 404 is fixedly connected to the clamping plate 401; the clamping plate 401 is located above the nonwoven fabric to be tested and is used to clamp the nonwoven fabric to be tested; a plurality of second guide rods 403 are provided at the top of the clamping plate 401; each second guide rod 403 is slidably connected to the third support plate 402 in the vertical direction.

[0050] like Figures 18 to 19 As shown, the telescopic mechanism 7 is composed of a first fixed rod 701, a tension spring 702, a second fixed rod 703, a second connecting rod 704, a first sliding rod 705, a connecting plate 706, and a first sliding hole 707.

[0051] The telescopic mechanism 7 is as follows: a second fixed rod 703 is provided inside the base 5. The second fixed rod 703 is connected to one end of the first fixed rod 701 through a tension spring 702. The other end of the first fixed rod 701 is fixedly connected to one end of the second connecting rod 704. The other end of the second connecting rod 704 is fixedly connected to one end of the first sliding rod 705. The other end of the first sliding rod 705 is rotatably connected to the fifth support plate 19. The first sliding rod 705 is fixedly connected to the connecting plate 706. The connecting plate 706 has first sliding holes 707 on both sides that are slidably connected to the first slider 25.

[0052] The tensile strength testing method for nonwoven fabric production in this embodiment includes the following steps:

[0053] S1, Pressing the nonwoven fabric to be tested: The output end of the third electric cylinder 409 sequentially drives the third support plate 402 to open through the first sleeve 407, rotating shaft 406, and first connecting rod 405, placing the nonwoven fabric to be tested on the two placement platforms 6. Under the action of the telescopic mechanism 7, the two placement platforms 6 are in the extended state, and the pressing and clamping mechanism 4 presses the nonwoven fabric to be tested onto the two placement platforms 6. Figure 1 As shown.

[0054] The clamping mechanism 4 clamps the nonwoven fabric to be tested onto the two placement platforms 6 as follows: the output end of the third electric cylinder 409 drives the third support plate 402 to swing through the first sleeve 407, the rotating shaft 406, and the first connecting rod 405 in sequence. The third support plate 402 moves to be directly above the two placement platforms 6. The output end of the second electric cylinder 404 drives the clamping plate 401 to move vertically. Multiple second guide rods 403 on the top of the clamping plate 401 move vertically downward on the third support plate 402. The clamping plate 401 clamps the nonwoven fabric to be tested onto the two placement platforms 6.

[0055] S2, Clamping the nonwoven fabric to be tested: The output shaft of the second motor 8 drives the lead screw 9 to rotate, the second support plate 2 moves horizontally on the lead screw 9 and the two third guide rods 10, the second support plate 2 drives the tensile testing mechanism 1 on the support frame 3 to move horizontally, the output end of the fourth electric cylinder 14 drives the slide plate 12 to move vertically on the first slide groove 13 of the second support plate 2, the slide plate 12 drives the tensile testing mechanism 1 on the support frame 3 to move vertically, adjust one side of the lower clamping plate 108 to be located on one side of the placement table 6, the upper end surface of the lower clamping plate 108 and the upper end surface of the contact block 114 are on the same horizontal plane, in the initial state, the two ends of the protrusion of the cam 112 abut against the contact blocks 114 on both sides respectively, the output shaft of the first motor 104 drives the first gear 101 to rotate, the first gear 101 meshes with the second gear 102 to drive the second gear 102 to rotate, the second gear 102 and The third gear 103 meshes and drives the third gear 103 to rotate. The third gear 103 drives the cam 112 to rotate through the first connecting shaft 113. The two ends of the protrusion of the cam 112 move to separate from the contact block 114, the first motor 104 stops moving, the sliding rod 111 moves horizontally on the base 5, and the sliding rod 111 drives the lower clamping plate 108 on the first support plate 109 to move horizontally. Each lower clamping plate 108 pushes the placement platform 6 to move horizontally on the second slide groove 20 of the fifth support plate 19. Under the action of the telescopic mechanism 7, the two placement platforms 6 are in a retracted state. The two ends of the nonwoven fabric to be tested are respectively located between the lower clamping plate 108 and the upper clamping plate 107. The output end of the first electric cylinder 105 drives the upper clamping plate 107 to move vertically on multiple first guide rods 106. The upper clamping plate 107 and the lower clamping plate 108 clamp one end of the nonwoven fabric to be tested, such as Figure 9 As shown.

[0056] Under the action of the telescopic mechanism 7, the two placement platforms 6 are in the retracted state as follows: the first support plate 23 and the second support plate 24 of the placement platform 6 move horizontally in the second slide groove 20 of the fifth support plate 19; one of the first sliders 25 on the first support plate 23 of the placement platform 6 slides in the first slide hole 707 of the connecting plate 706; the other first slider 25 on the first support plate 23 slides horizontally in the third slide hole 22 of the fifth support plate 19; the second support plate 24 of the placement platform 6 slides in the second slide hole 21 of the fifth support plate 19; the connecting plate 706 moves sequentially through the first slide rod 705, the second connecting rod 704, and the first fixing rod 701; and the tension spring 702 retracts.

[0057] S3, Tensile strength test of the nonwoven fabric to be tested: The output shaft of the third motor 11 drives the support frame 3 to rotate 90°, the contact plate 18 on the support frame 3 rotates to contact the stop 17 on the slide plate 12, the two clamping components move to the vertical direction, the output shaft of the first motor 104 drives the first gear 101 to rotate, the first gear 101 meshes with the second gear 102 to drive the second gear 102 to rotate, the second gear 102 meshes with the third gear 103 to drive the third gear 103 to rotate, the third gear 103 drives the first connecting shaft 113 to... When the movable cam 112 rotates, and the two ends of the protrusion of the cam 112 move to abut against the contact block 114, the sliding rods 111 on both sides move horizontally on the base 5. Each sliding rod 111 drives the clamping assembly to stretch the non-woven fabric to be tested vertically, which is used to test the tensile strength of the non-woven fabric and determine its qualification. This avoids horizontal stretching of the non-woven fabric, as longer pieces of non-woven fabric will sag due to their own weight during horizontal stretching, causing the non-woven fabric to be in a bent state, thus disrupting the consistency of the axial force on the non-woven fabric. Figure 10 , Figure 15 As shown.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A tensile strength testing device for nonwoven fabric production, characterized in that: A fifth support plate (19) is provided on one side of the base (5). Placement platforms (6) are slidably connected to both sides of the fifth support plate (19) in the horizontal direction. Multiple second slide grooves (20) are machined on the fifth support plate (19) and are slidably connected to the placement platforms (6) in the horizontal direction. Non-woven fabric to be tested is placed on the two placement platforms (6). A telescopic mechanism (7) connected to the two placement platforms (6) is provided on the base (5). A clamping and clamping mechanism (4) for pressing the non-woven fabric to be tested on the two placement platforms (6) is provided on the base (5). A second support plate is slidably connected to the other side of the base (5) in the horizontal direction. The first slide groove (13) is provided on the second support plate (2). The slide groove (13) is slidably connected to the slide plate (12) in the vertical direction. Two blocks (17) are provided on one side of the slide plate (12). A third motor (11) is provided on the slide plate (12). The output shaft of the third motor (11) is fixedly connected to the contact plate (18). The two ends of the contact plate (18) respectively contact the corresponding blocks (17). The contact plate (18) is fixedly connected to the support frame (3). A tensile testing mechanism (1) is provided on the support frame (3) to clamp the two ends of the non-woven fabric to be tested and to perform vertical tensile testing on the non-woven fabric to be tested. The tensile testing mechanism (1) is as follows: a first gear (101) is rotatably mounted on a support frame (3), a first motor (104) is provided on the support frame (3) to drive the first gear (101) to rotate, a second gear (102) that meshes with the first gear (101) is rotatably mounted on a second support plate (2), the second gear (102) is located below the first gear (101), a third gear (103) that meshes with the second gear (102) is rotatably mounted on the support frame (3), the third gear (103) is located below the second gear (102), a first connecting shaft (113) is rotatably mounted on the support frame (3), and the third... The gear (103) is fixedly connected to the cam (112) via the first connecting shaft (113). The support frame (3) is slidably connected to the sliding rods (111) on both sides of the cam (112) in the horizontal direction. Each sliding rod (111) has a contact block (114) at one end that abuts against the cam (112), and a clamping assembly for clamping the non-woven fabric to be tested at the other end of each sliding rod (111). Each sliding rod (111) is provided with a first spring (110), one end of each first spring (110) is connected to the support frame (3), and the other end of each first spring (110) is connected to the contact block (114). The clamping assembly is as follows: a first support plate (109) is provided at the other end of the sliding rod (111), a first electric cylinder (105) is provided on the first support plate (109), the output end of the first electric cylinder (105) is fixedly connected to the upper clamping plate (107), a plurality of first guide rods (106) are provided on the first support plate (109), the upper clamping plate (107) and the plurality of first guide rods (106) are slidably connected in the vertical direction, a lower clamping plate (108) is provided at the bottom of the first support plate (109) and located below the upper clamping plate (107), an upper rubber clamping pad (115) is provided at the bottom of the upper clamping plate (107), a lower rubber clamping pad (116) is provided at the top of the lower clamping plate (108), and the non-woven fabric to be tested is clamped between the upper rubber clamping pad (115) and the lower rubber clamping pad (116); The telescopic mechanism (7) is as follows: a second fixed rod (703) is provided in the base (5). The second fixed rod (703) is connected to one end of the first fixed rod (701) through a tension spring (702). The other end of the first fixed rod (701) is fixedly connected to one end of the second connecting rod (704). The other end of the second connecting rod (704) is fixedly connected to one end of the first sliding rod (705). The other end of the first sliding rod (705) is rotatably connected to the fifth support plate (19). The first sliding rod (705) is fixedly connected to the connecting plate (706). The connecting plate (706) has first sliding holes (707) on both sides that are slidably connected to the first slider (25).

2. The tensile strength testing device for nonwoven fabric production according to claim 1, characterized in that: The base (5) is provided with a second motor (8), the output shaft of the second motor (8) is fixedly connected to the lead screw (9), the lead screw (9) is rotatably connected to the base (5), the second support plate (2) is threadedly connected to the lead screw (9), the base (5) is provided with a third guide rod (10) located on both sides of the lead screw (9), the second support plate (2) and the third guide rod (10) are slidably connected in the horizontal direction, the base (5) is provided with a base plate (15) located on both sides of the lead screw (9), and each base plate (15) is provided with a guide plate (16) slidably connected in the horizontal direction to the second support plate (2).

3. The tensile strength testing device for nonwoven fabric production according to claim 1, characterized in that, The second support plate (2) is provided with a fourth electric cylinder (14), and the output end of the fourth electric cylinder (14) is fixedly connected to the slide plate (12).

4. The tensile strength testing device for nonwoven fabric production according to claim 1, characterized in that: Each of the aforementioned placement platforms (6) is provided with a first support plate (23) and a second support plate (24). The fifth support plate (19) is provided with a plurality of second sliding grooves (20) that are slidably connected to the first support plate (23) and the second support plate (24) in the horizontal direction. Each first support plate (23) is provided with a plurality of first sliders (25). Each second support plate (24) is provided with a plurality of second sliders (26). The fifth support plate (19) is provided with a third sliding hole (22) that is slidably connected to the first slider (25) in the horizontal direction. The fifth support plate (19) is provided with a second sliding hole (21) that is slidably connected to the second slider (26) in the horizontal direction.

5. The tensile strength testing device for nonwoven fabric production according to claim 1, characterized in that, The clamping mechanism (4) is as follows: a fourth support plate (408) is fixedly installed on one side of the base (5), and a fixed shaft (410) is provided at the bottom of one side of the fourth support plate (408). The fixed shaft (410) is rotatably connected to the second sleeve (411) at the bottom of the third electric cylinder (409). The output end of the third electric cylinder (409) is fixedly connected to the first sleeve (407). A third support plate (402) is hinged to the top of the fourth support plate (408). Two first connecting rods (405) are provided on one side of the bottom of the third support plate (402). A rotating shaft (406) is fixedly installed between a connecting rod (405). The rotating shaft (406) is rotatably connected to the first sleeve (407). A second electric cylinder (404) is provided on the third support plate (402). The output end of the second electric cylinder (404) is fixedly connected to the pressing plate (401). The pressing plate (401) is located above the non-woven fabric to be tested and is used to press the non-woven fabric to be tested. A plurality of second guide rods (403) are provided at the top of the pressing plate (401). Each second guide rod (403) is slidably connected to the third support plate (402) in the vertical direction.

6. A method for testing the tensile strength of nonwoven fabrics, using the tensile strength testing device for nonwoven fabric production as described in claim 5, characterized in that, Includes the following steps: S1, Press the non-woven fabric to be tested: Open the third support plate (402), place the non-woven fabric to be tested on the two placement platforms (6), and under the action of the telescopic mechanism (7), the two placement platforms (6) are in the extended state. The pressing clamping mechanism (4) presses the non-woven fabric to be tested on the two placement platforms (6). S2, Clamping the nonwoven fabric to be tested: The output shaft of the second motor (8) drives the lead screw (9) to rotate, the second support plate (2) moves horizontally on the lead screw (9) and the two third guide rods (10), the second support plate (2) drives the tensile testing mechanism (1) on the support frame (3) to move horizontally, the output end of the fourth electric cylinder (14) drives the slide plate (12) to move vertically on the first slide groove (13) of the second support plate (2), the slide plate (12) drives the tensile testing mechanism (1) on the support frame (3) to move vertically. The vertical movement adjusts one side of the lower clamping plate (108) to be positioned on the side of the placement platform (6). The upper end face of the lower clamping plate (108) and the upper end face of the contact block (114) are on the same horizontal plane. In the initial state, the two ends of the protrusion of the cam (112) abut against the contact blocks (114) on both sides respectively. The output shaft of the first motor (104) drives the first gear (101) to rotate. The first gear (101) meshes with the second gear (102) to drive the second gear (102) to rotate. The second gear (102) rotates. The third gear (103) meshes with the third gear (103), driving the third gear (103) to rotate. The third gear (103) drives the cam (112) to rotate through the first connecting shaft (113). The two ends of the protrusion of the cam (112) move to separate from the contact block (114), the first motor (104) stops moving, and the sliding rod (111) moves horizontally on the base (5). The sliding rod (111) drives the lower clamping plate (108) on the first support plate (109) to move horizontally. Each lower clamping plate (108) The placement platform (6) is pushed to move horizontally on the second slide groove (20) of the fifth support plate (19). Under the action of the telescopic mechanism (7), the two placement platforms (6) are in a retracted state. The two ends of the non-woven fabric to be tested are located between the lower clamping plate (108) and the upper clamping plate (107) respectively. The output end of the first electric cylinder (105) drives the upper clamping plate (107) to move vertically on multiple first guide rods (106). The upper clamping plate (107) and the lower clamping plate (108) clamp one end of the non-woven fabric to be tested. S3, Tensile strength of the nonwoven fabric to be tested: The output shaft of the third motor (11) drives the support frame (3) to rotate 90°, the contact plate (18) on the support frame (3) rotates to contact the stop (17) on the slide plate (12), the two clamping components move to the vertical direction, the output shaft of the first motor (104) drives the first gear (101) to rotate, the first gear (101) meshes with the second gear (102) to drive the second gear (102) to rotate, the second gear (102) meshes with the third gear (103) to drive the second gear (102) to rotate, the second gear (102) meshes with the third gear (103) to drive the second gear (102) to rotate. The meshing transmission drives the third gear (103) to rotate. The third gear (103) drives the cam (112) to rotate through the first connecting shaft (113). When the two ends of the protrusion of the cam (112) move to contact the abutment block (114), the sliding rods (111) on both sides move horizontally on the base (5). Each sliding rod (111) drives the clamping assembly to clamp the non-woven fabric to be tested and stretch it vertically to test the tensile strength of the non-woven fabric to be tested and to determine the qualification of the non-woven fabric to be tested.

7. The method for testing tensile strength in nonwoven fabric production according to claim 6, characterized in that, The method for opening the third support plate (402) in S1 is as follows: the output end of the third electric cylinder (409) drives the third support plate (402) to open sequentially through the first sleeve (407), the rotating shaft (406), and the first connecting rod (405); The method by which the clamping mechanism (4) in S1 clamps the nonwoven fabric to be tested onto the two placement platforms (6) is as follows: the output end of the third electric cylinder (409) drives the third support plate (402) to swing through the first sleeve (407), the rotating shaft (406), and the first connecting rod (405) in sequence. The third support plate (402) moves to be directly above the two placement platforms (6). The output end of the second electric cylinder (404) drives the clamping plate (401) to move in the vertical direction. Multiple second guide rods (403) on the top of the clamping plate (401) move downward in the vertical direction on the third support plate (402). The clamping plate (401) clamps the nonwoven fabric to be tested onto the two placement platforms (6). In S2, under the action of the telescopic mechanism (7), the two placement platforms (6) are in a retracted state as follows: the first support plate (23) and the second support plate (24) of the placement platform (6) move horizontally in the second slide groove (20) of the fifth support plate (19), one of the first sliders (25) on the first support plate (23) of the placement platform (6) slides in the first slide hole (707) of the connecting plate (706), the other first slider (25) on the first support plate (23) slides horizontally in the third slide hole (22) of the fifth support plate (19), the second support plate (24) of the placement platform (6) slides in the second slide hole (21) of the fifth support plate (19), the connecting plate (706) moves in sequence through the first slide rod (705), the second connecting rod (704), and the first fixed rod (701), and the tension spring (702) retracts.

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