Fabric textile density detection equipment and detection method

Abstract

The invention discloses fabric textile density detection equipment and a detection method, relates to the field of fabric textile density detection, and solves the problems that in existing fabric textile density detection, in order to obtain more diversified detection data, a fabric needs to be manually moved to change the position, the efficiency of manually moving the position of the fabric is low, and the detection efficiency is high. In order to solve the problems that in the prior art, in the prior art, a fabric density tester and operation are complex, the fabric density tester comprises a fabric density tester, a supporting frame, a conveying roller, a power roller, a power mechanism, a sliding frame, a sliding roller, a supporting plate, a sliding roller pulling mechanism and a supporting plate adjusting mechanism, the sliding roller pulling mechanism is used for pulling the sliding roller to be close to the power roller, and the supporting plate adjusting mechanism is used for adjusting the supporting plate to move up and down; the supporting frame is provided with a supporting plate for fitting and supporting the fabric above the supporting plate, and the supporting frame is further provided with a flattening mechanism for flattening the fabric supported on the supporting plate. According to the device, the fabric can be flexibly conveyed and adjusted, so that the textile density detection at different positions is realized, and the operation efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of fabric textile density detection, and in particular to a fabric textile density detection device and a detection method. Background Art

[0002] Textile density refers to the number of warp yarns and weft yarns contained in a fabric per unit length, which is divided into warp density and weft density. Specifically:

[0003] Warp density: the number of warp yarns contained in a unit length along the weft direction of the fabric;

[0004] Weft density: the number of weft yarns contained in a unit length along the warp direction of the fabric.

[0005] Weaving density is an important parameter of fabric, which is related to the quality, width and weight of the fabric. Generally speaking, the higher the density of the fabric, the higher the price, but this is not absolute. The quality of the fabric also depends on factors such as the thickness of the thread and the printing process.

[0006] The textile density of fabrics is also related to the feel, comfort, durability and appearance of textiles. Therefore, in specific production, it is usually necessary to sample the finished fabrics and do various tests to check their various properties. There are various testing methods for textile density testing, including manual testing and digital fabric density testers, which use electron microscopes and computers to test the textile density of fabrics.

[0007] Regardless of the detection method, the textile density can only be detected at a single position on the fabric. When the position needs to be changed to obtain more reliable and accurate data, the fabric needs to be manually moved and then re-laid and aligned. The operation is cumbersome and greatly reduces the efficiency of fabric textile density detection. Therefore, a textile density detection device and a detection method for fabric are proposed. Summary of the invention

[0008] The purpose of the present invention is to provide a textile density detection device and a detection method for fabrics, which solves the problem that in order to obtain more diverse detection data during the existing fabric textile density detection, the fabric needs to be manually moved to change its position, while the manual movement of the fabric position is inefficient and cumbersome to operate.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a textile density detection device for fabrics, comprising a fabric density tester, a support frame is installed on the fabric density tester, two groups of conveying rollers and two power rollers are rotatably installed at both ends of the support frame, and a power mechanism for driving the power rollers to rotate is provided on the support frame, a slide is also connected to the support frame, and a sliding roller is slidably connected to the slide, a support plate is provided in the support frame, a sliding roller pulling mechanism and a support plate adjustment mechanism are provided on the support frame, the sliding roller pulling mechanism is used to pull the sliding roller close to the power roller to convey the fabric between them, the support plate adjustment mechanism is used to adjust the up and down movement of the support plate to fit and support the fabric above the support plate, and a leveling mechanism is also provided on the support frame for leveling the fabric supported on the support plate.

[0010] Preferably, the power mechanism includes a driving motor and a single-layer pulley. The driving motor is mounted on a supporting frame, and the output end of the driving motor is connected to a double-layer pulley. The single-layer pulley is connected to one end of the power roller, and belts are respectively installed between the double-layer pulley and the single-layer pulleys on both sides thereof.

[0011] Preferably, the sliding roller pulling mechanism includes a sliding rail, a sliding plate, a T-shaped connecting plate, and a vertical plate. The sliding rail is connected to the support frame, one side of the sliding plate is slidably connected to the sliding rail, and both ends of the sliding plate are rotatably connected to the sliding rollers on both sides with a rotating plate. The fabric density tester is also connected to a telescopic rod, the T-shaped connecting plate is connected to the telescopic rod, the vertical plate is connected to the T-shaped connecting plate, and the lower end of the vertical plate cooperates and contacts with the sliding plate.

[0012] Preferably, the inner wall of the slide rail is connected with a slide rod, the slide plate is slidingly sleeved on the outer side of the slide rod, the outer side of the slide rod is sleeved with a spring, and both ends of the spring are respectively connected to the slide plate and the inner wall of the slide rail.

[0013] Preferably, a resistance switch is installed on the fabric density tester, the lower end of the T-shaped connecting plate cooperates with the resistance switch and the resistance switch is electrically connected to the driving motor.

[0014] Preferably, the support plate adjustment mechanism includes a connecting seat, a rotating plate 2, and an inclined frame. A sliding sleeve passing through the support frame is provided with a guide slide rod 1. The connecting seat is connected to the guide slide rod 1 on the inner side of the support frame, and the inclined frame is connected to the guide slide rod 1 on the outer side of the support frame. The two ends of the rotating plate 2 are respectively connected to the support plate and the connecting seat, and the inclined surface of the inclined frame is slidably connected with the T-shaped connecting plate.

[0015] Preferably, a spring 2 is sleeved on the outer side of the guide slide rod 1, and two ends of the spring 2 are respectively connected to the support frame and the inclined frame.

[0016] Preferably, the leveling mechanism includes a second guide slide bar, a frame, a roller, a limit plate, a rack, and a gear. The second guide slide bar is connected to the support frame, the frame is slidably mounted on the outer side of the second guide slide bar, the lower end of the frame is rotatably connected to a rotating plate three, the roller is rotatably mounted on the rotating plate three, the limit plate is connected to the frame, and the limit plate and the rotating plate three are tilted and limited, the rack is connected to the frame, and the same racks are also connected on both sides of the upper end of the vertical plate, the gear is arranged between adjacent racks, and the gear is rotatably mounted on the support frame.

[0017] Preferably, the roller is arranged parallel to the conveying roller, one end of the rotating plate three is rotatably connected to the roller, and the other end is rotatably connected to the frame, and a gear is arranged between the rack connected to the frame and the rack connected to one side of the vertical plate.

[0018] A method for detecting textile density of fabrics, the specific steps comprising:

[0019] Step 1: First, lay the fabric flat on two sets of conveyor rollers, and then place the two ends of the fabric on the sides away from the power rollers and on the sides close to the sliding rollers;

[0020] Step 2: The sliding rollers on both sides are driven to approach each other through the sliding roller pulling mechanism until they fit into the power rollers on their respective sides, thereby clamping the fabric between the power rollers and the sliding rollers, and starting the power mechanism to drive the power rollers to rotate, thereby driving the fabric to be transmitted and adjusting different positions of the fabric;

[0021] Step 3: After the position adjustment of the fabric is completed, the sliding roller is reset to cancel the clamping of the fabric, and the support plate adjustment mechanism drives the support plate to move up, and the fabric in its natural state is supported by the support plate;

[0022] Step 4: The fabric in its natural state supported on the pallet is leveled by a leveling mechanism, and finally the textile density of the leveled fabric is tested by a fabric density tester;

[0023] Step 5: Repeat steps 2 to 4 to test the textile density at different positions of the fabric.

[0024] Compared with the related art, the textile density detection device and detection method for fabric provided by the present invention have the following beneficial effects:

[0025] The present invention can automatically complete the process of repeatedly moving and flattening the fabric to detect the textile density at different positions on the fabric. The entire process does not require human intervention and is easy to operate, which significantly improves the detection efficiency and accuracy. The entire device can achieve the process through a driving component, which simplifies the structure and control, reduces the equipment failure rate, and is beneficial to later operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the non-woven fabric density tester of the present invention.

[0028] Figure 3 It is a side view structural schematic diagram of the non-woven fabric density tester of the present invention.

[0029] Figure 4 for Figure 3 There is no structural diagram of the leveling mechanism.

[0030] Figure 5 for Figure 4 There is no schematic diagram of the telescopic rod and its related structures.

[0031] Figure 6 This is a cross-sectional view of the present invention without a fabric density tester and with a fabric direction.

[0032] In the figure: 1. fabric density tester; 2. support frame; 3. transmission roller; 4. power roller; 5. slide frame; 6. slide roller; 7. drive motor; 8. double-layer pulley; 9. single-layer pulley; 10. single-layer pulley; 11. support plate; 12. slide rail; 13. slide plate; 14. rotating plate 1; 15. telescopic rod; 16. T-shaped connecting plate; 17. vertical plate; 18. slide bar; 19. spring; 20. guide slide bar 1; 21. connecting seat; 22. rotating plate 2; 23. inclined frame; 24. spring 2; 25. guide slide bar 2; 26. frame; 27. rotating plate 3; 28. roller; 29. ​​limit plate; 30. rack; 31. gear; 32. resistance switch. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Embodiment 1:

[0035] See also Figure 1-6The present invention provides a technical solution: a textile density detection device for fabrics, comprising a fabric density tester 1, a support frame 2 is installed on the fabric density tester 1, two ends of the support frame 2 are rotatably installed with two groups of conveying rollers 3 and two power rollers 4, and a power mechanism for driving the power rollers 4 to rotate is provided on the support frame 2, and a slide frame 5 is also connected to the support frame 2, and a slide roller 6 is slidably connected to the slide frame 5, that is, the support frame 2 is installed in the fabric density tester 1, and the fabric density tester 1 can specifically be the existing Y511B fabric density mirror, DW512A fabric density tester, DW511B fabric density tester, etc. Specifically, due to the different shapes of each fabric density tester, the position arrangement between the support frame 2 may be different, but the fabric density tester 1 is kept above the fabric to achieve detection.

[0036] The power mechanism includes a driving motor 7 and a single-layer pulley 9. The driving motor 7 is installed on the support frame 2, and the output end of the driving motor 7 is connected to a double-layer pulley 8. The single-layer pulley 9 is connected to one end of the power roller 4. The double-layer pulley 8 is respectively provided with belts 10 between the single-layer pulleys 10 on both sides thereof. In this way, the driving motor 7 can be started to drive the two belts 10 provided on the double-layer pulley 8 to rotate in the same direction, so that the power rollers 4 on both sides can also rotate in the same direction.

[0037] As attached Figure 2 As shown, two groups of conveying rollers 3 are used to support the fabric, and both ends of the fabric will hang down from the ends of the conveying rollers 3 on both sides, and hang down between the power rollers 4 and the sliding rollers 6 on both sides.

[0038] A support plate 11 is arranged in the support frame 2, and a sliding roller pulling mechanism and a support plate adjustment mechanism are arranged on the support frame 2. The sliding roller pulling mechanism is used to pull the sliding roller 6 close to the power roller 4 to transmit the fabric between them. The sliding roller pulling mechanism includes a slide rail 12, a slide plate 13, a T-shaped connecting plate 16, and a vertical plate 17. The slide rail 12 is connected to the support frame 2, and one side of the slide plate 13 is slidably connected in the slide rail 12. Both ends of the slide plate 13 are rotatably connected to the sliding rollers 6 on both sides with a rotating plate 14. A telescopic rod 15 is also connected to the fabric density tester 1, the T-shaped connecting plate 16 is connected to the telescopic rod 15, the vertical plate 17 is connected to the T-shaped connecting plate 16, and the lower end of the vertical plate 17 cooperates with the slide plate 13 to abut.

[0039] When in use, the telescopic rod 15 drives the T-shaped connecting plate 16 and the vertical plate 17 to move downward, so as to push the slide plate 13 to move downward along the slide rail 12, and pull the rotating plate 14 to rotate, thereby driving the sliding rollers 6 on both sides to slide closer to each other in their respective slides 5 until they collide with the power roller 4. At this time, the conflict between the power roller 4 and the sliding roller 6 will squeeze the fabric between them, and then when the power mechanism starts to drive the power rollers 4 on both sides to rotate, the fabric can be driven to be transmitted to one end by the power rollers 4 rotating in the same direction, thereby changing its position opposite to the fabric density tester 1, so as to facilitate the efficient adjustment and detection of different positions.

[0040] The inner wall of the slide rail 12 is connected with a slide bar 18, and the slide plate 13 is slidably sleeved on the outer side of the slide bar 18. The outer side of the slide bar 18 is sleeved with a spring 19, and the two ends of the spring 19 are respectively connected to the slide plate 13 and the inner wall of the slide rail 12, so that when there is no effect of the vertical plate 17, the slide plate 13 can be pushed up by the elastic force of the spring 19, so that the slide rollers 66 on both sides are reset away from each other.

[0041] The fabric density tester 1 is provided with a resistance switch 32, and the lower end of the T-shaped connecting plate 16 cooperates with the resistance switch 32, and the resistance switch 32 is electrically connected to the driving motor 7, so that when the vertical plate 17 moves down to the sliding rollers 6 on both sides to cooperate with the power rollers 4 to clamp the fabric tightly, the downwardly moved T-shaped connecting plate 16 can resist and trigger the resistance switch 32, and the automatic control driving motor 7 is started to convey the fabric.

[0042] The pallet adjustment mechanism is used to adjust the pallet 11 to move up and down so as to provide close support for the fabric above the pallet 11. The pallet adjustment mechanism includes a connecting seat 21, a rotating plate 22, and an inclined frame 23. A sliding sleeve passing through the support frame 2 is provided with a guide slide bar 20. The connecting seat 21 is connected to the inner side of the guide slide bar 20 on the support frame 2. The inclined frame 23 is connected to the outer side of the guide slide bar 20 on the support frame 2. Both ends of the rotating plate 22 are respectively connected to the pallet 11 and the connecting seat 21. The inclined surface of the inclined frame 23 is slidably connected to the T-shaped connecting plate 16.

[0043] As attached Figure 2 , 3 As shown, when the telescopic rod 15 drives the vertical plate 17 to move upward, the T-shaped connecting plate 16 can gradually come into contact with the inclined surface of the inclined frame 23, and push the inclined frames 23 and the connecting seat 21 on both sides of the support frame 2 to be relatively close, and drive the rotating plate 22 to rotate, thereby lifting the support plate 11 upward. At this time, since the vertical plate 17 is separated from the slide plate 13, the clamping of the fabric by the sliding roller 6 and the power roller 4 is also cancelled, and the fabric is in a naturally relaxed state. The upward movement of the support plate 11 can support the middle part of the fabric and the part directly opposite to the fabric density tester 1.

[0044] A spring 24 is sleeved on the outer side of the guide slide rod 20, and the two ends of the spring 24 are respectively connected to the support frame 2 and the inclined frame 23, so that when there is no T-shaped connecting plate 16 acting on the inclined frame 23, the inclined frame 23 can be moved away from the support frame 2 under the action of the spring 24, and the support plate 11 moves down and resets.

[0045] A leveling mechanism is also provided on the support frame 2 for leveling the fabric supported on the support plate 11. The leveling mechanism includes a guide slide bar 25, a frame 26, a roller 28, a limit plate 29, a rack 30, and a gear 31. The guide slide bar 25 is connected to the support frame 2, the frame 26 is slidably sleeved on the outer side of the guide slide bar 25, the lower end of the frame 26 is rotatably connected to a rotating plate 3 27, the roller 28 is rotatably mounted on the rotating plate 3 27, the limit plate 29 is connected to the frame 26, and the limit plate 29 and the rotating plate 3 27 are tilted and limited, the rack 30 is connected to the frame 26, and the same racks 30 are also connected to both sides of the upper end of the vertical plate 17, the gear 31 is arranged between adjacent racks 30, and the gear 31 is rotatably mounted on the support frame 2.

[0046] As attached Figure 2 , 3 As shown, when the vertical plate 17 is driven to move upward, the racks 30 connected to both sides of the upper end of the vertical plate 17 will also be driven upward synchronously, so that the gear 31 meshing with the rack 30 rotates, and then the rack 30 connected to the frame 26 is driven to move downward, so as to push the frame 26 to move downward as a whole, and drive the roller 28 to gradually contact with the support plate 11, and after contact, since the two ends of the fabric are not clamped by the power roller 4 and the sliding roller 6 at this time, and are in a naturally relaxed state, the rollers 28 on both sides will roll away from each other on the upper end surface of the support plate 11 to level the fabric, and then when the upper end surface of the support plate 11 is at the same height as the upper side of the conveying roller 3, the vertical plate 17 stops moving, and at this time, the roller 28 has also completed the leveling of the fabric, and the textile density of the fabric can be tested.

[0047] At the same time, the setting of the limit plate 29 can make the rotating plate three 27 in an inclined state, so that when the roller 28 contacts the supporting plate 11, the rotating plate three 27 can be driven to rotate, so that the roller 28 rolls on the supporting plate 11 and the fabric thereon is leveled.

[0048] The roller 28 is arranged parallel to the conveying roller 3, one end of the rotating plate 27 is rotatably connected to the roller 28, and the other end is rotatably connected to the frame 26, and a gear 31 is arranged between the rack 30 connected to the frame 26 and the rack 30 connected to one side of the vertical plate 17, so that the moving direction of the vertical plate 17 can be kept opposite to the moving direction of the frame 26.

[0049] Embodiment 2:

[0050] See also Figure 1-6The present invention provides a technical solution: a method for detecting the textile density of fabrics, the specific steps of which include:

[0051] Step 1: first lay the fabric flat on two sets of conveying rollers 3, and then place the two ends of the fabric on the far side of the power rollers 4 on both sides, and on the close side of the sliding rollers 6 on both sides;

[0052] Step 2: The sliding rollers 6 on both sides are driven to approach each other through the sliding roller pulling mechanism until they fit into the power rollers 4 on their respective sides, thereby clamping the fabric between the power rollers 4 and the sliding rollers 6, and starting the power mechanism to drive the power rollers 4 to rotate, thereby driving the fabric to be transmitted and adjusting different positions of the fabric;

[0053] Step 3: After the position adjustment of the fabric is completed, the sliding roller 6 is reset to cancel the clamping of the fabric, and the support plate adjustment mechanism drives the support plate 11 to move upward, and the fabric in a natural state is supported by the support plate 11;

[0054] Step 4: The fabric in a natural state supported on the support plate 11 is flattened by a flattening mechanism, and finally the textile density of the flattened fabric is tested by a fabric density tester 1;

[0055] Step 5: Repeat steps 2 to 4 to test the textile density at different positions of the fabric.

Claims

1. A textile density testing device for fabrics, comprising a fabric density tester (1), a support frame (2) being mounted on the fabric density tester (1), two sets of conveying rollers (3) and two power rollers (4) being rotatably mounted at both ends of the support frame (2), and a power mechanism for driving the power rollers (4) to rotate is provided on the support frame (2), characterized in that: The support frame (2) is also connected to a slide frame (5), and a sliding roller (6) is slidably connected to the slide frame (5). A support plate (11) is arranged inside the support frame (2), and a sliding roller pulling mechanism and a support plate adjustment mechanism are arranged on the support frame (2). The sliding roller pulling mechanism is used to pull the sliding roller (6) close to the power roller (4) to transfer the fabric between them, and the support plate adjustment mechanism is used to adjust the support plate (11) to move up and down to support the fabric above the support plate (11). The support frame (2) is also provided with a leveling mechanism for leveling the fabric supported on the support plate (11).

2. A textile density detection device for fabrics according to claim 1, characterized in that: The power mechanism comprises a driving motor (7) and a single-layer pulley (9); the driving motor (7) is mounted on a support frame (2); and the output end of the driving motor (7) is connected to a double-layer pulley (8); the single-layer pulley (9) is connected to one end of a power roller (4); and belts (10) are respectively sleeved between the double-layer pulley (8) and the single-layer pulleys (10) on both sides thereof.

3. A textile density detection device for fabrics according to claim 2, characterized in that: The sliding roller pulling mechanism comprises a sliding rail (12), a sliding plate (13), a T-shaped connecting plate (16), and a vertical plate (17); the sliding rail (12) is connected to the support frame (2); one side of the sliding plate (13) is slidably connected to the sliding rail (12); two ends of the sliding plate (13) are rotatably connected to the sliding rollers (6) on both sides by a rotating plate (14); the fabric density tester (1) is also connected to a telescopic rod (15); the T-shaped connecting plate (16) is connected to the telescopic rod (15); the vertical plate (17) is connected to the T-shaped connecting plate (16); and the lower end of the vertical plate (17) cooperates with and contacts the sliding plate (13).

4. A textile density detection device for fabrics according to claim 3, characterized in that: The inner wall of the slide rail (12) is connected with a slide rod (18), the slide plate (13) is slidably sleeved on the outer side of the slide rod (18), the outer side of the slide rod (18) is sleeved with a spring (19), and the two ends of the spring (19) are respectively connected to the inner wall of the slide plate (13) and the slide rail (12).

5. The textile density detection device for fabric according to claim 3, characterized in that: The fabric density tester (1) is provided with a conflict switch (32), the lower end of the T-shaped connecting plate (16) cooperates with the conflict switch (32) to conflict, and the conflict switch (32) is electrically connected to the driving motor (7).

6. The textile density detection device for fabric according to claim 3, characterized in that: The support plate adjustment mechanism comprises a connecting seat (21), a rotating plate (22), and an inclined frame (23); a sliding sleeve passing through the support frame (2) is provided with a guide slide bar (20); the connecting seat (21) is connected to the inner side of the guide slide bar (20) on the support frame (2); the inclined frame (23) is connected to the outer side of the guide slide bar (20) on the support frame (2); the two ends of the rotating plate (22) are respectively connected to the support plate (11) and the connecting seat (21); and the inclined surface of the inclined frame (23) is fitted and slidably connected to the T-shaped connecting plate (16).

7. A textile density detection device for fabrics according to claim 6, characterized in that: The outer side of the guide slide rod 1 (20) is sleeved with a spring 2 (24), and the two ends of the spring 2 (24) are respectively connected to the support frame (2) and the inclined frame (23).

8. The textile density detection device for fabric according to claim 3, characterized in that: The leveling mechanism comprises a second guide slide bar (25), a frame (26), a roller (28), a limit plate (29), a rack (30), and a gear (31). The second guide slide bar (25) is connected to the support frame (2); the frame (26) is slidably sleeved on the outer side of the second guide slide bar (25); the lower end of the frame (26) is rotatably connected to a third rotating plate (27); the roller (28) is rotatably mounted on the third rotating plate (27); the limit plate (29) is connected to the frame (26), and the limit plate (29) and the third rotating plate (27) are tilted and limited; the rack (30) is connected to the frame (26); the upper ends of the vertical plates (17) are also connected to the same racks (30); the gear (31) is arranged between adjacent racks (30), and the gear (31) is rotatably mounted on the support frame (2).

9. A fabric textile density detection device according to claim 8, characterized in that: The roller (28) is arranged parallel to the conveying roller (3); one end of the rotating plate (27) is rotatably connected to the roller (28), and the other end is rotatably connected to the frame (26); a gear (31) is arranged between the rack (30) connected to the frame (26) and the rack (30) connected to one side of the vertical plate (17).

10. A method for detecting textile density of fabrics, characterized in that: The method is based on the device according to any one of claims 1 to 9, and the specific steps include: Step 1: first, lay the fabric flat on two sets of conveying rollers (3), and then place the two ends of the fabric on the sides away from the power rollers (4) on both sides, and on the sides close to the sliding rollers (6) on both sides; Step 2: The sliding rollers (6) on both sides are driven to approach each other through the sliding roller pulling mechanism until they are in contact with the power rollers (4) on their respective sides, thereby clamping the fabric between the power rollers (4) and the sliding rollers (6), and starting the power mechanism to drive the power rollers (4) to rotate, thereby driving the fabric to be transported and adjusting different positions of the fabric; Step 3: After the position adjustment of the fabric is completed, the sliding roller (6) is reset to cancel the clamping of the fabric, and the support plate adjustment mechanism drives the support plate (11) to move upward, and the fabric in a natural state is supported by the support plate (11); Step 4: The fabric in a natural state supported on the support plate (11) is flattened by a flattening mechanism, and finally the textile density of the flattened fabric is tested by a fabric density tester (1); Step 5: Repeat steps 2 to 4 to test the textile density at different positions of the fabric.

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