Stretching detection device for non-woven fabric production

Abstract

The invention relates to the technical field of stretching detection equipment, in particular to a stretching detection device for non-woven fabric production. Comprising a base; the guide rail is fixedly connected to the base, and the guide rail is connected with a moving part in a sliding mode; the first connecting piece is fixedly connected to the moving piece, the first connecting piece is fixedly connected with two first push rods, telescopic rods of the first push rods are fixedly connected with first extrusion blocks, the first extrusion blocks are provided with grooves, and sliding grooves are formed in the side walls of the grooves of the first extrusion blocks; the number of the sliding pieces is four, the sliding pieces are connected to the interiors of the sliding grooves in the grooves of the first extrusion block in a sliding mode, and the sliding pieces are fixedly connected with guide rods; and the first extrusion rollers are arranged in the grooves of the first extrusion blocks, and the first extrusion rollers are fixedly connected with the two adjacent sliding pieces through rotating shafts. The two first extrusion rollers move along the non-woven fabric to apply pre-tightening force to the non-woven fabric, and therefore it is guaranteed that the non-woven fabric is evenly stressed during stretching detection.

Description

Technical Field

[0001] The present invention relates to the technical field of stretching detection equipment, and particularly relates to a stretching detection device for non-woven fabric production. Background Art

[0002] Non-woven fabric, also known as non-woven cloth, is a fabric that can be formed without going through traditional textile and weaving processes. The production speed of non-woven fabric is higher than that of woven fabric production, and it has low cost and diverse properties, so it is widely used in many fields.

[0003] When producing non-woven fabric, a stretching detector is needed to detect its tensile strength and elongation at break. When the stretching detector detects the non-woven fabric sample, it needs to use clamping plates to fix both ends of the non-woven fabric sample and complete the stretching action. When fixing both ends of the non-woven fabric sample, it is very easy for the non-woven fabric sample to tilt. Seriously, one side of the non-woven fabric sample will be taut while the other side will be loose. As a result, during the stretching detection, the tensile force on the non-woven fabric sample is concentrated on the side that is taut in the initial state, causing uneven tensile force on the non-woven fabric sample, leading to the side with concentrated tensile force breaking first, and the breaking position of the non-woven fabric sample being abnormal, resulting in inaccurate detection values. Summary of the Invention

[0004] In order to overcome the disadvantage of uneven force during the detection of non-woven fabric samples, the present invention provides a stretching detection device for non-woven fabric production.

[0005] The technical solution of the present invention is: a stretching detection device for non-woven fabric production, comprising:

[0006] A base;

[0007] A guide rail, fixedly connected to the upper side of the base, and a moving member is slidably connected to the guide rail, and the moving member is used to provide an upward tensile force;

[0008] A first connecting member, fixedly connected to the lower part of the moving member, and the first connecting member is fixedly connected with two first push rods symmetrically distributed. The telescopic rod of the first push rod penetrates through the first connecting member and is fixedly connected with a first extrusion block. Grooves are provided on the opposite sides of the two first extrusion blocks, and sliding grooves are provided on the side walls of the grooves of the first extrusion block;

[0009] Sliding members, there are four of them, respectively slidably connected to the sliding grooves in the grooves of the first extrusion block. The sliding members are fixedly connected with guide rods that slidably cooperate with the first extrusion block, and elastic members are fixedly connected between the sliding members and the adjacent first extrusion blocks;

[0010] The first pressing roller is arranged in the groove of the first pressing block. The first pressing roller is fixedly connected to two adjacent sliding members through a rotating shaft, and the non-woven fabric sample is leveled and pre-tightened by rolling the two first pressing rollers from bottom to top along the non-woven fabric sample.

[0011] The fixing component is arranged on the upper side of the base, and the fixing component is used to fix the lower end of the non-woven fabric.

[0012] Furthermore, the fixing component includes:

[0013] The second connecting member is fixedly connected to the upper side of the base. The second connecting member is fixedly connected with two symmetrically distributed second push rods, and the telescopic rods of the second push rods pass through the second connecting member.

[0014] The number of the second pressing blocks is the same as that of the second push rods, and the second pressing blocks are fixedly connected to the telescopic rods of the second push rods.

[0015] Furthermore, both the first pressing block and the second pressing block are provided with folded surfaces for increasing the contact area with the non-woven fabric sample.

[0016] Furthermore, it further includes:

[0017] The auxiliary fixing mechanism is provided with two groups, which are respectively arranged on adjacent first pressing blocks. The two groups of auxiliary fixing mechanisms are used to press the lower end of the folded non-woven fabric sample. The auxiliary fixing mechanism includes:

[0018] There are two swing rods. The two swing rods are rotatably connected to both sides of the first pressing block. A second pressing roller is fixedly connected between the two swing rods, and the second pressing roller is used to press the end of the non-woven fabric sample.

[0019] The number of torsion springs is the same as that of the swing rods. The torsion springs are fixedly connected between the swing rods and the first pressing block, and the torsion springs are used to drive the second pressing roller to reset.

[0020] The auxiliary installation component is arranged on the guide rail and is located between the first connecting member and the second connecting member. The auxiliary installation component is used to assist in fixing and leveling the non-woven fabric sample.

[0021] Furthermore, there is resistance when both the second pressing roller and the first pressing roller rotate along their rotating shafts.

[0022] Furthermore, the auxiliary installation component includes:

[0023] There are two third push rods, which are respectively fixed on both sides of the guide rail. An L-shaped plate is fixed to the telescopic end of the third push rod. A fixed disk is fixed between the two L-shaped plates. The fixed disk is provided with two vertical through grooves. A square block is slidably connected in the through groove of the fixed disk. The square block is rotatably connected with a third pressing roller by a fixed shaft;

[0024] A rotating member is rotatably connected to one side of the fixed disk. A toothed ring is arranged on the outer side of the rotating member. The rotating member is provided with two inclined through grooves. One side of the square block is slidably connected in the adjacent inclined through groove of the rotating member;

[0025] A motor is fixed to the lower parts of the two L-shaped plates. A gear is fixed to the output shaft of the motor. The gear on the output shaft of the motor meshes with the toothed ring of the rotating member.

[0026] Furthermore, symmetrically distributed fixed rods are fixed to the bottom plate of the second connecting member. The fixed rods penetrate through the adjacent L-shaped plates and are slidably connected to each other.

[0027] Furthermore, an anti-slip ring is sleeved outside the third pressing roller to increase the friction with the non-woven fabric, and there is resistance when the third pressing roller rotates along the fixed shaft of the square block.

[0028] Furthermore, the central axis of the third pressing roller is located on the connection line between the center points of the first connecting member and the second connecting member.

[0029] Furthermore, the diameter of the third pressing roller is smaller than the distance between the two second pressing blocks.

[0030] In summary, the present invention has the following advantages: The present invention uses two first pressing rollers to move along the non-woven fabric to apply a pre-tightening force to the non-woven fabric, so as to ensure uniform stress when the non-woven fabric is stretched and detected, and avoid the non-woven fabric skewing to one side during the process of fixing both ends of the non-woven fabric, resulting in uneven stress during subsequent stretching and inaccurate measured values; The present invention folds the non-woven fabric in a way that the two ends are at different heights, then corrects the angle of the non-woven fabric through the third pressing roller, uses the second pressing roller to press the lower end of the non-woven fabric to complete the pre-fixing of the non-woven fabric, and moves the non-woven fabric downward along the non-woven fabric through two third pressing rollers, so that the direction of the tensile force on the non-woven fabric is parallel to the central axis of the non-woven fabric, avoiding deviation between the direction of the tensile force on the non-woven fabric and the central axis direction of the non-woven fabric during the stretching and detection process of the non-woven fabric, resulting in deviation between the measured result during the stretching and detection of the non-woven fabric and the tensile resistance of the non-woven fabric itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0032] Figure 2This is a three-dimensional structure diagram of parts such as the base and moving parts of the present invention;

[0033] Figure 3 This is a three-dimensional structure diagram of parts such as the first connecting piece and the first extrusion block of the present invention;

[0034] Figure 4 This is a three-dimensional structure diagram of parts such as the first extrusion block and the first extrusion roller of the present invention;

[0035] Figure 5 This is a sectional three-dimensional structure diagram of the first extrusion block of the present invention;

[0036] Figure 6 This is a three-dimensional structure diagram of parts such as the sliding part and the elastic part of the present invention;

[0037] Figure 7 This is a three-dimensional structure diagram of parts such as the second connecting piece, the second push rod and the second extrusion block of the present invention;

[0038] Figure 8 This is a three-dimensional structure diagram of parts such as the third push rod and the L-shaped plate of the present invention;

[0039] Figure 9 This is a three-dimensional structure diagram of parts such as the fixed disk and the third extrusion roller of the present invention;

[0040] Figure 10 This is a sectional three-dimensional structure diagram of the fixed disk of the present invention.

[0041] Names of the reference numerals in the figure: 1 - base, 2 - guide rail, 3 - moving part, 4 - first connecting piece, 5 - first push rod, 6 - first extrusion block, 7 - sliding part, 8 - guide rod, 9 - elastic part, 10 - first extrusion roller, 11 - second connecting piece, 12 - second push rod, 13 - second extrusion block, 14 - swing rod, 15 - second extrusion roller, 16 - torsion spring, 17 - third push rod, 18 - L-shaped plate, 19 - fixed disk, 20 - square block, 21 - third extrusion roller, 22 - rotating part, 23 - motor. Detailed implementation manners

[0042] The following further illustrates the technical solution with specific embodiments. It should be noted that: The words indicating directions such as up and down mentioned in this article are only in terms of the positions of the shown structures in the corresponding drawings. The serial numbers assigned to the components in this article, for example: first, second, etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And as used in this application: connection, unless otherwise specified, includes both direct and indirect connections.

[0043] Embodiment 1: A stretching detection device for non-woven fabric production, as Figures 1 - 6As shown in the figure, it includes a base 1. Four legs are installed on the lower side of the base 1 for adjusting the balance of the base 1; a guide rail 2 is fixedly connected to the upper side of the base 1, and a moving member 3 is slidably connected to the guide rail 2. The moving member 3 is used to provide an upward pulling force; a first connecting member 4 is fixedly connected to the lower part of the moving member 3. Two first push rods 5 distributed symmetrically are fixedly connected to the first connecting member 4. The telescopic rod of the first push rod 5 penetrates through the first connecting member 4 and is fixedly connected to a first pressing block 6. The distance in the front-back direction of the first pressing block 6 is greater than the width of the non-woven fabric sample. Grooves are provided on the opposite sides of the two first pressing blocks 6. The grooves of the two first pressing blocks 6 are at the same height, and sliding grooves are provided on the side walls of the grooves of the first pressing block 6; four sliding members 7 are provided. The four sliding members 7 are respectively slidably connected to the sliding grooves in the grooves of the first pressing block 6. The sliding members 7 are in limit fit with the sliding grooves in the grooves of the first pressing block 6. The sliding members 7 are fixedly connected to a guide rod 8 that slidably cooperates with the first pressing block 6. An elastic member 9 is fixedly connected between the sliding member 7 and the adjacent first pressing block 6. The elastic member 9 is set as a spring and is sleeved on the outside of the guide rod 8; a first pressing roller 10 is arranged in the groove of the first pressing block 6. The first pressing roller 10 is fixedly connected to the adjacent two sliding members 7 through a rotating shaft. The non-woven fabric sample is leveled and pre-tightened by rolling the two first pressing rollers 10 along the non-woven fabric sample from bottom to top; a fixing assembly is arranged on the upper side of the base 1. The fixing assembly is used to fix the lower end of the non-woven fabric.

[0044] Furthermore, as shown in Figure 2 and Figure 7 the figure, the fixing assembly includes: a second connecting member 11 fixedly connected to the upper side of the base 1. Two second push rods 12 distributed symmetrically are fixedly connected to the second connecting member 11. The telescopic rods of the second push rods 12 pass through the second connecting member 11; two second pressing blocks 13 are provided in total and are fixedly connected to the telescopic rods of the second push rods 12. Both the first pressing block 6 and the second pressing block 13 are provided with folded surfaces for increasing the contact area with the non-woven fabric sample.

[0045] In the above solution, the main purpose is to apply a pre-tightening force to the non-woven fabric sample (hereinafter referred to as non-woven fabric for simplicity) before fixation, so as to ensure uniform stress during the tensile test of the non-woven fabric, and avoid the non-woven fabric skewing to one side during the process of fixing both ends, resulting in uneven tensile stress in the subsequent process and inaccurate measured values. A control panel is provided on the front side of the base 1, and the control panel is used to control all electrical components on this device. The base 1 is set as a metal shell with heat dissipation holes, which not only provides a stable supporting force for this device, but also can dissipate heat from the electrical components in this device in a timely manner. An electric servo system is installed in the guide rail 2, and the specific structure of the electric servo system is not shown in the attached drawings. The electric servo system is used to drive the moving part 3 to move up and down. A folded dust-proof sheet is installed between the moving part 3 and the guide rail 2. The folded dust-proof sheet is made of elastic material and is used to protect the electric servo system in the guide rail 2 to avoid the electric servo system contacting with dust. The first connecting piece 4 is composed of a fixed seat, a tensile sensor and a connecting seat. The tensile sensor is electrically connected to the control panel, and the tensile sensor is used to transmit the value obtained from the tensile test of the non-woven fabric to the control panel. Both the first pressing roller 10 and the second pressing roller 15 are kept in a horizontal state. Limiting blocks are provided on both the upper and lower sides of the sliding part 7 to ensure that the sliding part 7 can only move to one side initially.

[0046] Working process: When using this device to conduct a tensile test on the non-woven fabric, the tester controls and adjusts the position of the moving part 3. Driven by the electric servo system, the moving part 3 moves downward along the guide rail 2, and the parts on the moving part 3 move downward synchronously until the first connecting piece 4 moves to the upper side of the second connecting piece 11. Subsequently, the non-woven fabric cut by the tester is placed between the two first pressing blocks 6 and the two second pressing blocks 13. At this time, according to work experience, the tester places the non-woven fabric vertically between the two first pressing blocks 6 and the two second pressing blocks 13, and the lower part of the non-woven fabric is placed between the two second pressing blocks 13. The tester starts the two first push rods 5 and the two second push rods 12 through the control panel. The telescopic rods of the two second push rods 12 drive the second pressing blocks 13 on them to move relatively until the two second pressing blocks 13 clamp and fix the lower part of the non-woven fabric. The control panel then closes the two second push rods 12. During the above process, the first push rod 5 also drives the first pressing block 6 to move. After the first pressing rollers 10 on the left and right sides press on both sides of the non-woven fabric, the elastic member 9 is in a state of storing energy, and the control panel controls the telescopic end of the first push rod 5 to stop moving.

[0047] In the above working process, the non-woven fabric has been pre-fixed. Subsequently, the tester drives the moving member 3 to move upward along the guide rail 2 through the control panel. The two first extrusion blocks 6 respectively drive the first extrusion rollers 10 thereon to move upward along the non-woven fabric. The first extrusion rollers 10 rotate around their rotating shafts and generate resistance. Under the action of the two first extrusion rollers 10, a pre-tightening force is applied to the non-woven fabric (the non-woven fabric will not deform), so as to ensure that when the subsequent non-woven fabric is subjected to tensile testing, the tensile force received by the whole non-woven fabric is balanced.

[0048] After the two first extrusion blocks 6 move upward to the upper part of the non-woven fabric, the control panel starts the two first push rods 5 again. The telescopic rods of the two first push rods 5 respectively drive the first extrusion blocks 6 thereon to move until the two first extrusion blocks 6 clamp and fix the upper part of the non-woven fabric. During the above process, the two first extrusion rollers 10 are squeezed and retracted into the grooves of the first extrusion blocks 6. The first extrusion rollers 10 drive the two connected sliding members 7 to move. The sliding members 7 drive the guide rods 8 thereon to slide along the first extrusion blocks 6. At the same time, the elastic members 9 are compressed. Subsequently, the tester starts to perform tensile testing on the non-woven fabric. The moving member 3 moves upward along the guide rail 2 and transmits the detected tensile force value to the control panel until the non-woven fabric breaks. Then the control panel drives the moving member 3 to reset to the initial state. Then the tester removes the broken non-woven fabric. Then the above steps are repeated to perform tensile testing on the subsequent non-woven fabric.

[0049] Embodiment 2: On the basis of Embodiment 1, as Figure 5 shown, it further includes: an auxiliary fixing mechanism, which is provided with two groups and is respectively arranged on adjacent first extrusion blocks 6. The two groups of auxiliary fixing mechanisms are used to press the lower end of the folded non-woven fabric sample. The auxiliary fixing mechanism includes: two swing rods 14, which are rotatably connected to both sides of the first extrusion block 6. A second extrusion roller 15 is fixedly connected between the two swing rods 14. The second extrusion roller 15 is used to press the end of the non-woven fabric sample; two torsion springs 16, which are fixedly connected between the swing rods 14 and the first extrusion block 6. The torsion springs 16 are used to drive the second extrusion roller 15 to reset; an auxiliary installation component, which is arranged on the guide rail 2 and is located between the first connecting member 4 and the second connecting member 11. The auxiliary installation component is used to assist in fixing and leveling the non-woven fabric sample. There is resistance when both the second extrusion roller 15 and the first extrusion roller 10 rotate along their rotating shafts.

[0050] Further, as Figures 8 - 10As shown in the figure, the auxiliary installation component includes: two third push rods 17, which are respectively fixed on both sides of the guide rail 2. An L-shaped plate 18 is fixed to the telescopic end of the third push rod 17. A fixed disk 19 is fixed between the two L-shaped plates 18. The fixed disk 19 is provided with two vertical through grooves. A square block 20 is slidably connected in the through groove of the fixed disk 19. The square block 20 is rotatably connected with a third pressing roller 21 by a fixed shaft; a rotating member 22 is rotatably connected to the rear side of the fixed disk 19. A toothed ring is arranged on the outer side of the rotating member 22. The rotating member 22 is provided with two inclined through grooves. One side of the square block 20 is slidably connected in the adjacent inclined through groove of the rotating member 22; a motor 23 is fixed to the lower part of the two L-shaped plates 18. A gear is fixed to the output shaft of the motor 23. The gear on the output shaft of the motor 23 meshes with the toothed ring of the rotating member 22. Symmetrically distributed two fixed rods are fixed to the bottom plate of the second connecting member 11. The fixed rods penetrate through the adjacent L-shaped plate 18 and are slidably connected therewith. An anti-slip ring is sleeved on the outside of the third pressing roller 21 to increase the friction with the non-woven fabric. And there is resistance when the third pressing roller 21 rotates along the fixed shaft of the square block 20. The central axis of the third pressing roller 21 is located on the connection line between the center points of the first connecting member 4 and the second connecting member 11. And the diameter of the third pressing roller 21 is smaller than the distance between the two second pressing blocks 13.

[0051] In the above solution, the main purpose is to improve the verticality of the non-woven fabric during the clamping process, and avoid the deviation between the pulling force direction of the non-woven fabric and the central axis direction of the non-woven fabric during the tensile test, resulting in the deviation between the measured result during the tensile test of the non-woven fabric and the tensile capacity of the non-woven fabric itself. The two third push rods 17 are vertically installed on the left and right sides of the guide rail 2. The inner walls of the two through grooves of the fixed disk 19 are provided with chutes. The square block 20 is in limit fit with the chutes on the inner wall of the through groove of the fixed disk 19, so as to ensure that the square block 20 and the third pressing roller 21 thereon are in a horizontal state. The fixed disk 19 is rotatably connected with the rotating member 22 through a connecting groove. The rotating member 22 is used to adjust the distance between the two square blocks 20. The fixed rods fixed to the mounting seats on the bottom plate of the second connecting member 11 are parallel to the guide rail 2, thereby improving the stability when the two third pressing rollers 21 move.

[0052] Workflow: The tester folds the non-woven fabric in half so that the two side edges are flush, and ensures that the two ends are in a state of different heights (such as Figure 9) Subsequently, insert the lower bent portion of the non-woven fabric into the third squeezing roller 21 on the upper side. During the above process, ensure that the front and rear edges of the folded non-woven fabric are flush. The inspector starts the control panel and controls the output shaft of the motor 23 to drive the gear on it to rotate clockwise. At this time, the rotating member 22 rotates counterclockwise. The rotating member 22 drives the two square blocks 20 to move closer to each other through the inclined through slots. The two square blocks 20 move closer to each other along the adjacent through slots of the fixed disk 19 respectively, so as to clamp the lower part of the folded non-woven fabric by the two third squeezing rollers 21. At this time, the clamping force applied by the two third squeezing rollers 21 to the non-woven fabric does not affect the normal rotation of the third squeezing rollers 21. During the above process, the inspector ensures that the folded non-woven fabric is placed in a taut state between the two first pressing blocks 6, and then repeats the above steps to make the two first pressing blocks 6 move closer to each other. The two first pressing blocks 6 and the two second squeezing rollers 15 simultaneously squeeze both sides of the folded non-woven fabric. At this time, the two second squeezing rollers 15 squeeze at the lower end of the folded non-woven fabric, while the first pressing blocks 6 squeeze and fix at the higher end of the folded non-woven fabric. Subsequently, the control panel closes the two first push rods 5 to complete the pre-fixation of the non-woven fabric.

[0053] After the above work is completed, the tester starts two third push rods 17 through the control panel. The telescopic rods of the third push rods 17 drive the L-shaped plates 18 thereon to move downward. The telescopic rods of the two third push rods 17 move downward at the same speed. The L-shaped plates 18 slide along the adjacent fixed rods, and the two third pressing rollers 21 move downward. Both ends of the folded non-woven fabric are subjected to tensile forces. At this time, the lower end of the non-woven fabric is pulled downward and the second pressing roller 15 in contact therewith rotates until the second pressing roller 15 loses contact with the lower end of the non-woven fabric. After one end of the non-woven fabric loses contact with the second pressing roller 15, it then turns downward under the action of gravity. The two third pressing rollers 21 move downward along the non-woven fabric, and the two third pressing rollers 21 rotate in opposite directions. When the third pressing rollers 21 rotate, a pre-tightening force is applied to the non-woven fabric. As the two third pressing rollers 21 move downward to the lower side of the two second pressing blocks 13, the control panel starts the second push rod 12, so that the two second pressing blocks 13 clamp and fix the lower part of the non-woven fabric. During the above process, the two third pressing rollers 21 are always in contact with the non-woven fabric. By using the two third pressing rollers 21 to move downward along the non-woven fabric, a pre-tightening force is applied to the non-woven fabric, ensuring that the non-woven fabric is perpendicular to the base 1. Thus, when the non-woven fabric is subjected to tensile testing, the force application direction of the non-woven fabric is parallel to its axis direction, improving the accuracy of the tensile testing of the non-woven fabric. Then, the above operation is repeated to perform tensile testing on the non-woven fabric. When the non-woven fabric is broken, the control panel resets the moving member 3, the two first push rods 5 and the two second push rods 12. Subsequently, the control panel controls the output shaft of the motor 23 to rotate in the reverse direction, so that the two third pressing rollers 21 move away from each other. At the same time, the telescopic ends of the two third push rods 17 are reset. The control panel then turns off all the electrical components on this device, completing the tensile testing of the non-woven fabric.

[0054] The above are only examples of the present invention and are not intended to limit the present invention. All equivalent replacements made within the principles of the present invention shall be included within the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the well-known prior art of those skilled in the art.

Claims

1. A stretching detection device for non-woven fabric production, characterized in that, It includes: Base (1); Guide rail (2), fixedly connected to the upper side of the base (1), the guide rail (2) is slidably connected with a moving member (3), and the moving member (3) is used to provide an upward pulling force; First connecting member (4), fixedly connected to the lower part of the moving member (3), the first connecting member (4) is fixedly connected with two first push rods (5) distributed symmetrically, the telescopic rod of the first push rod (5) penetrates through the first connecting member (4) and is fixedly connected with a first pressing block (6), grooves are provided on the opposite sides of the two first pressing blocks (6), and chutes are provided on the side walls of the grooves of the first pressing block (6); Sliding members (7), four in number, are respectively slidably connected in the chutes in the grooves of the first pressing block (6), the sliding members (7) are fixedly connected with guide rods (8) slidably matched with the first pressing block (6), and elastic members (9) are fixedly connected between the sliding members (7) and the adjacent first pressing blocks (6); First pressing roller (10), arranged in the groove of the first pressing block (6), the first pressing roller (10) is fixedly connected with two adjacent sliding members (7) through a rotating shaft, and the non-woven fabric sample is leveled and pre-tightened by rolling the two first pressing rollers (10) from bottom to top along the non-woven fabric sample; Fixing assembly, arranged on the upper side of the base (1), and the fixing assembly is used to fix the lower end of the non-woven fabric.

2. The stretching detection device for non-woven fabric production according to claim 1, wherein, The fixing assembly includes: Second connecting member (11), fixedly connected to the upper side of the base (1), the second connecting member (11) is fixedly connected with two second push rods (12) distributed symmetrically, and the telescopic rod of the second push rod (12) passes through the second connecting member (11); Second pressing block (13), the number of which is the same as that of the second push rods (12), is fixedly connected to the telescopic rod of the second push rod (12).

3. The tensile testing device for non-woven fabric production according to claim 2, characterized in that, Both the first pressing block (6) and the second pressing block (13) are provided with folded surfaces for increasing the contact area with the non-woven fabric sample.

4. The stretching detection device for non-woven fabric production according to claim 3, wherein, It also includes: Auxiliary fixing mechanisms, two groups are provided, respectively arranged on adjacent first pressing blocks (6), and the two groups of auxiliary fixing mechanisms are used to press the lower end of the folded non-woven fabric sample, and the auxiliary fixing mechanism includes: Swing rods (14), two in number, the two swing rods (14) are rotatably connected to both sides of the first pressing block (6), a second pressing roller (15) is fixedly connected between the two swing rods (14), and the second pressing roller (15) is used to press the end of the non-woven fabric sample; Torsion springs (16), the number of which is the same as that of the swing rods (14), are fixedly connected between the swing rods (14) and the first pressing block (6), and the torsion springs (16) are used to drive the second pressing roller (15) to reset; Auxiliary installation assembly, arranged on the guide rail (2) and located between the first connecting member (4) and the second connecting member (11), and the auxiliary installation assembly is used to assist in fixing and leveling the non-woven fabric sample.

5. The stretching detection device for non-woven fabric production according to claim 4, characterized in that, Both the second pressing roller (15) and the first pressing roller (10) have resistance when rotating along their rotating shafts.

6. The stretching detection device for non-woven fabric production according to claim 5, characterized in that, The auxiliary installation component includes the following: Two third push rods (17) are respectively fixedly connected to both sides of the guide rail (2). An L-shaped plate (18) is fixedly connected to the telescopic end of each third push rod (17). A fixed disk (19) is fixedly connected between the two L-shaped plates (18). The fixed disk (19) is provided with two vertical through slots. A square block (20) is slidably connected in the through slots of the fixed disk (19). The square block (20) is rotatably connected to a third pressing roller (21) by a fixed shaft; A rotating member (22) is rotatably connected to one side of the fixed disk (19). A toothed ring is arranged on the outer side of the rotating member (22). The rotating member (22) is provided with two inclined through slots. One side of the square block (20) is slidably connected in the adjacent inclined through slots of the rotating member (22); A motor (23) is fixedly connected to the lower parts of the two L-shaped plates (18). A gear is fixedly connected to the output shaft of the motor (23). The gear on the output shaft of the motor (23) meshes with the toothed ring of the rotating member (22).

7. The stretching detection device for non-woven fabric production according to claim 6, characterized in that, Symmetrically distributed fixed rods are fixedly connected to the bottom plate of the second connecting member (11). The fixed rods penetrate through the adjacent L-shaped plates (18) and are slidably connected to each other.

8. The stretching detection device for non-woven fabric production according to claim 7, characterized in that, An anti-slip ring is sleeved outside the third pressing roller (21) to increase the friction with the non-woven fabric, and there is resistance when the third pressing roller (21) rotates along the fixed shaft of the square block (20).

9. The stretching detection device for non-woven fabric production according to claim 8, characterized in that, The central axis of the third pressing roller (21) is located on the connection line between the center points of the first connecting member (4) and the second connecting member (11).

10. A stretching detection device for non-woven fabric production according to claim 9, characterized in that, The diameter of the third pressing roller (21) is smaller than the distance between the two second pressing blocks (13).

Images