A fabric laying device with automatically adjustable cutting roller diameter

Abstract

This utility model discloses a fabric laying device with an automatically adjustable diameter cutting roller, belonging to the field of medical dressing production technology. It includes a frame and a cutting roller. The cutting roller includes a rotating shaft, a motor, two spoked wheels, and N crossbars. Each spoked wheel includes a ring, a fixed ring, and N spokes. Each spoke is a sliding rod with a sliding seat on it. The left and right ends of the crossbars are respectively fixed to the two corresponding sliding seats. The cutting roller also includes two driving structures. Each driving structure includes an inner sliding ring, an outer sliding ring, a driving mechanism, N inner pulleys, N outer pulleys, N end pulleys, N outer cables, N inner cables, and M synchronous sliding rods. An end pulley is located at the end of each spoke away from the rotating shaft. An outer pulley is located on the outer side of the fixed ring, and an inner pulley is located on its inner side. An outer cable is fixed to the end of the sliding seat away from the rotating shaft, and passes through the end pulley and outer pulley in sequence before being fixedly connected to the inner sliding ring. An inner cable is fixed to the other end of the sliding seat, and passes through the inner pulley before being fixedly connected to the outer sliding ring.

Description

Technical Field

[0001] This utility model belongs to the field of medical dressing production technology, and specifically relates to a fabric laying device with an automatically adjustable cutting roller diameter. Background Technology

[0002] When mass-producing items such as clothing, face masks, and shoe materials, stacked fabrics are cut. Currently, there are two common methods of stacking materials: one is to use a fabric spreading machine to spread the fabric multiple times, which is inefficient and time-consuming; the other is to use a windmill-type fabric rolling machine to first wind all the material into a roll, and then cut it from the middle.

[0003] Method 2 can be found in the following patent:

[0004] For example, patent application number CN201920754496.X discloses a fabric spreading machine with an adjustable cutting roller diameter, including a frame, on which a cutting roller is mounted and rotatably mounted. A drive motor for rotating the cutting roller is mounted on the frame, and a cutting shear for cutting fabric is also mounted on the frame. The cutting roller includes a rotating shaft, with mounting plates fixed at both ends. Several spokes are fixed at intervals around the axis of the mounting plates, with the interval between adjacent spokes forming a cutting cavity. The spokes on the mounting plates at both ends of the rotating shaft are parallel and correspond one-to-one. A crossbar is provided between corresponding spokes on two mounting plates, with collars fixed at both ends of the crossbar. The collars are fitted onto the spokes and are slidably mounted on the spokes. A fixing element for securing the collars is also provided on the spokes.

[0005] For example, patent application number CN202011527410.3 discloses a high-efficiency, material-saving windmill-type fabric rolling machine, including a rotating frame, a first drive assembly for driving the rotating frame to rotate, and at least three sets of fabric rolling arms for cooperating with fabric rolling; characterized in that: the longitudinal distance between the fabric rolling end of the fabric rolling arm and the rotation center of the rotating frame is defined as a specific distance; the rotating frame is equipped with an adjustment assembly for adjusting the specific distance corresponding to each set of fabric rolling arms. Each fabric rolling arm includes a transverse fabric rolling shaft and at least one oblique connecting rod; one end of the oblique connecting rod is fixedly or rotatably connected to the fabric rolling shaft, and the other end of the oblique connecting rod is rotatably connected to the rotating frame; the adjustment assembly includes several sets of traction arms; each set of fabric rolling arms has at least one oblique connecting rod corresponding to at least one set of traction arms; the adjustment assembly also includes a second drive assembly for driving each set of traction arms to perform traction; the second drive assembly is mounted on the rotating frame. Multiple sets of the inclined connecting rods located on the same vertical plane constitute a connecting rod unit; at least one connecting rod unit contains an inclined connecting rod that corresponds to a set of traction arms and is provided with a traction groove; the length direction of the traction groove is the same as the length direction of the inclined connecting rod; the traction arm includes a traction wheel adapted to the traction groove and a sliding arm fixedly or rotatably connected to the traction wheel; the sliding arm is slidably connected to the rotating frame; the second drive assembly drives each set of sliding arms to slide.

[0006] Because the roll diameter varies, with the inner layer's circumference significantly shorter than the outer layer's, a large amount of edge material is cut off, resulting in substantial waste and hindering cost reduction. Therefore, the outer diameter of the fabric roll needs to remain constant, while the inner diameter must gradually decrease with each rotation. In existing technology, the inner diameter of the fabric roll cannot decrease automatically; manual operation of the crossbars towards the axis of rotation is required. However, the number of crossbars is large, and the movement of each crossbar is extremely small, typically less than 0.5mm, making operation very difficult. Utility Model Content

[0007] To address the aforementioned problems, this utility model provides a fabric laying device with an automatically adjustable cutting roll diameter. By coordinating the outer and inner pull cables, the inner diameter of the fabric roll is automatically adjusted, ensuring that the outer diameter of the fabric roll remains constant, thus facilitating control. The technical solution is as follows:

[0008] This utility model provides a fabric laying device with an automatically adjustable cutting roller diameter. The device includes a frame 1 and a cutting roller rotatably mounted on it. The cutting roller includes a rotating shaft 2 on the frame 1 arranged horizontally, a motor on the frame 1 for driving the rotating shaft 2, two spoked wheels arranged side-by-side on the rotating shaft 2, and N crossbars 3 between the two spoked wheels. Each spoked wheel includes a ring 4, a fixing ring 5, and N spokes 6 between them. The fixing ring 5 is coaxially fixed to the rotating shaft 2. The ring 4 and the fixing ring 5 are coaxially arranged. The multiple spokes 6 are evenly distributed and arranged radially along the rotating shaft 2. The spokes 6 of the two spoked wheels are arranged in a one-to-one correspondence. The N crossbars... 3 is located on the same circle concentric with the rotating shaft 2. The crossbar 3 is arranged in the left-right direction and is located between two corresponding spokes 6. The spokes 6 are sliding rods with sliding blocks 7 slidably mounted on them. The left and right ends of the crossbar 3 are respectively fixed to the sliding blocks 7 on the corresponding spokes 6 of the two spoke wheels. The cutting roll wheel also includes two driving structures. The two driving structures are used to drive the sliding blocks 7 on the two spoke wheels to move toward the rotating shaft 2 so that the outer diameter of the fabric roll is always the same. They are located on the left and right sides of the rotating shaft 2, respectively, and are located on the inner side of the spoke wheels on the corresponding sides. The driving structure includes an inner slip ring 8, an outer slip ring 9, a driving mechanism, N inner pulleys 10, N outer pulleys 11, and N end slides. The wheel consists of 12 wheels, N outer cables 13, N inner cables 14, and M synchronous sliding rods 15. The rotating shaft 2 is a hollow structure. The driving mechanism is located inside the rotating shaft 2 and is used to drive the outer slip ring 9 to move left and right. The two driving mechanisms operate synchronously. The inner slip ring 8 and outer slip ring 9 are arranged side by side, located inside the corresponding spoke wheels, and are slidably mounted on the rotating shaft 2, coaxial with the rotating shaft 2. The outer slip ring 9 is located outside the inner slip ring 8. Each spoke 6 is provided with one inner pulley 10, one outer pulley 11, one end pulley 12, one outer cable 13, and one inner cable 14. An end pulley 12 is provided at the end of the spoke 6 away from the rotating shaft 2. An outer pulley 11 is provided on the outer side of the fixed ring 5, corresponding to each spoke 6, and an inner pulley 10 is provided on the inner side of the fixed ring 5, corresponding to each spoke 6. The outer cable 13 is fixed to the end of the slide block 7 away from the rotating shaft 2. After passing through the end pulley 12 and the outer pulley 11 in sequence, it passes through the outer slip ring 9 and is fixedly connected to the inner slip ring 8. The inner cable 14 is fixed to the other end of the slide block 7. After passing through the inner pulley 10, it is fixedly connected to the outer slip ring 9. The synchronous slide rod 15 is arranged in the left and right direction. One end of it is fixed on the outer slip ring 9 of a driving structure, the middle part is slidably disposed on the inner slip ring 8 of a driving structure, and the other end of it is fixed on the inner slip ring 8 of another driving structure.

[0009] Furthermore, in this embodiment of the present invention, a sliding hole 16 is provided on the rotating shaft 2 and located at the outer slip ring 9. The sliding hole 16 is arranged in the left-right direction. The outer slip ring 9 is connected to the driving mechanism through a connector passing through the sliding hole 16. The driving mechanism includes a servo motor and a lead screw. The servo motor and the lead screw are both located inside the rotating shaft 2. The lead screw is arranged in the left-right direction and is threadedly connected to the connector. It is also connected to the servo motor for transmission.

[0010] In this embodiment of the present invention, both the inner slip ring 8 and the outer slip ring 9 include a sliding sleeve and a disc on its circumference. The sliding sleeve and the disc are coaxially arranged with the rotating shaft 2. The sliding sleeve is sleeved on the rotating shaft 2 and slides on the rotating shaft 2. The end of the outer cable 13 or the inner cable 14 is fixed on the disc. The synchronous sliding rod 15 slides or is fixed on the disc.

[0011] Furthermore, in this embodiment of the present invention, the outer slip ring 9 has M strip holes 17 on its disc for the outer cable 13 to pass through. The M strip holes 17 are evenly distributed and are all arranged radially along the outer slip ring 9.

[0012] Specifically, in this embodiment of the present invention, the end of the inner cable 14 is fixed to the end of the corresponding strip hole 17 away from the rotating shaft 2.

[0013] Specifically, in this embodiment of the present invention, N outer pulleys 11 are evenly distributed and located on a circle concentric with the rotating shaft 2, N inner pulleys 10 are evenly distributed and located on a circle concentric with the rotating shaft 2, and M synchronous slide rods 15 are evenly distributed and located on a circle concentric with the rotating shaft 2. The synchronous slide rods 15 of the two drive structures are staggered.

[0014] In this embodiment of the present invention, the fixing ring 5 includes a fixing disk and an inner cylinder. The fixing disk is coaxially fixed on the rotating shaft 2. The cylinder is coaxially arranged with the rotating shaft 2. The inner pulley 10 is located at the inner end of the cylinder. The spoke 6 is fixed to the inner side of the fixing disk near the rotating shaft 2 and is arranged around the cylinder. The outer pulley 11 is located on the fixing disk and is located between the rotating shaft 2 and the cylinder.

[0015] Furthermore, in this embodiment of the present invention, the spoke 6 is provided with an enlarged portion 18 at the end away from the rotating shaft 2, and the enlarged portion 18 is provided with a through hole along the left and right direction, and the end pulley 12 is disposed in the through hole; the ring 4 is fixedly connected to the end of the enlarged portion 18 away from the rotating shaft 2.

[0016] Specifically, in the embodiments of this utility model, N is 6-16 and M is 2-4.

[0017] Specifically, in this embodiment of the present invention, the distance between the crossbar 3 and the rotating shaft 2 is 0.4-1.2m; for every 2-4 rotations of the cutting wheel, the circumference of the circle formed by the crossbar 3 decreases by 1mm.

[0018] The beneficial effects of the technical solution provided by this utility model embodiment are as follows: This utility model embodiment provides a fabric laying device with an automatically adjustable cutting roll diameter. The inner diameter of the fabric roll is automatically adjusted by the cooperation of the outer and inner pull cables, ensuring that the outer diameter of the fabric roll remains constant, making control convenient. Specifically, one end of a synchronous slide rod is fixed to the outer slip ring of a driving structure, the middle part slides on the inner slip ring of a driving structure, and the other end is fixed to the inner slip ring of another driving structure. This achieves synchronous and unidirectional movement between the inner slip ring and the outer slip ring of the other driving structure, realizing relative movement between the inner and outer slip rings of the same driving structure. This allows the inner pull cable to pull the slide block, while the outer pull cable releases the slide block. Simultaneously, all slide blocks (2N) move synchronously. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the fabric laying device with automatically adjustable cutting roller diameter in an embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the spoked wheel;

[0021] Figure 3 This is a schematic diagram of the outer slip ring;

[0022] Figure 4 This is a schematic diagram of the inner slip ring.

[0023] In the diagram: 1. Frame, 2. Shaft, 3. Crossbar, 4. Ring, 5. Fixing ring, 6. Spoke, 7. Slide, 8. Inner slip ring, 9. Outer slip ring, 10. Inner pulley, 11. Outer pulley, 12. End pulley, 13. Outer cable, 14. Inner cable, 15. Synchronous slide bar, 16. Sliding hole, 17. Strip hole, 18. Expansion section. Detailed Implementation

[0024] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] See Figure 1-4 Example 1 provides a fabric laying device with an automatically adjustable cutting roll diameter. The device includes a frame 1 and a cutting roll rotatably mounted thereon.

[0027] The cutting wheel is arranged in a left-right direction and includes a rotating shaft 2, a motor, two spoked wheels, two drive mechanisms, and N crossbars 3. The rotating shaft 2, with its left and right ends rotatably mounted on the frame 1, is a hollow structure. The motor, mounted on the frame 1, drives the rotating shaft 2 and is connected to one end of the shaft. The two spoked wheels are arranged side-by-side, coaxially mounted on the rotating shaft 2, located on the left and right sides of the shaft 2 respectively. N crossbars 3 are located between the two spoked wheels, on the same circle concentric with the rotating shaft 2. N is between 6 and 16.

[0028] The spoked wheel includes a ring 4, a fixed ring 5, and N spokes 6 between them. The fixed ring 5 is coaxially fixed on the rotating shaft 2. The ring 4 is coaxial with the fixed ring 5 and is coplanar with it. The multiple spokes 6 are evenly distributed and arranged radially along the rotating shaft 2. The spokes 6 of the two spoked wheels are arranged in a one-to-one correspondence. The spoke 6 is a sliding rod, on which a sliding seat 7 is slidably mounted, which is specifically a smooth round rod. The crossbar 3 is arranged in the left-right direction, between the corresponding two spokes 6, and its left and right ends are respectively fixed to the sliding seats 7 (specifically the inner side of the sliding seats 7) on the corresponding spokes 6 of the two spoked wheels. The distance between the crossbar and the rotating shaft 2 is 0.4-1.2m.

[0029] Among them, the two drive structures are used to drive the slides 7 on the two spoke wheels to move toward the shaft 2 so that the outer diameter of the cloth roll is always the same. They are located on the left and right sides of the shaft 2, respectively, and they (mainly referring to the inner pulley 10 and the outer pulley 11) are located on the inner side of the spoke wheels on the corresponding sides.

[0030] The drive structure includes an inner slip ring 8, an outer slip ring 9, a drive mechanism, N inner pulleys 10, N outer pulleys 11, N end pulleys 12, N outer cables 13, N inner cables 14, and M synchronous sliding rods 15. M is 2-4.

[0031] The drive mechanism is located within the rotating shaft 2 and drives the outer slip ring 9 to move left and right. The two drive mechanisms operate synchronously, causing the two outer slip rings 9 to move towards or away from each other. Specifically, a sliding hole 16 is provided on the rotating shaft 2 at the location of the outer slip ring 9. The sliding hole 16 is arranged in the left-right direction, and the outer slip ring 9 is connected to the drive mechanism through a connector passing through the sliding hole 16. The drive mechanism includes a servo motor and a lead screw, both of which are located within the rotating shaft 2. The lead screw is arranged in the left-right direction and is threadedly connected to the connector, and is also connected to the servo motor for transmission. Alternatively, the two drive mechanisms can be the two ends of the same lead screw (with opposite thread directions), and this lead screw is driven by a single servo motor.

[0032] The inner slip ring 8 and outer slip ring 9 are arranged side by side, located inside the corresponding spoke wheels, and slidably mounted on the rotating shaft 2, coaxially with the shaft 2. Both inner slip rings 8 and outer slip rings 9 are located between the two spoke wheels. The outer slip ring 9 is located outside the inner slip ring 8. The inner slip ring 8 and outer slip ring 9 of the left-side drive structure are located inside the left-side spoke wheel, and the inner slip ring 8 and outer slip ring 9 of the right-side drive structure are located inside the right-side spoke wheel. Specifically, both the inner slip ring 8 and outer slip ring 9 include a sliding sleeve and a disc on its circumference, both coaxially mounted with the rotating shaft 2. The sliding sleeve, specifically a plastic cylinder, is fitted onto the rotating shaft 2 and slidably mounted thereon. The disc is specifically a metal disc.

[0033] Each spoke 6 is equipped with an inner pulley 10, an outer pulley 11, an end pulley 12, an outer cable 13, and an inner cable 14. An end pulley 12 (perpendicular to the corresponding outer cable 13) is located at the end of the spoke 6 furthest from the pivot 2. An outer pulley 11 (perpendicular to the corresponding outer cable 13) is located on the outer side of the fixing ring 5 corresponding to each spoke 6, and an inner pulley 10 (perpendicular to the corresponding inner cable 14) is located on the inner side of the fixing ring 5 corresponding to each spoke 6. N outer pulleys 11 are evenly distributed and located on a circle concentric with the pivot 2, and N inner pulleys 10 are evenly distributed and located on a circle concentric with the pivot 2.

[0034] The outer cable 13 is fixed at the end of the slide block 7 away from the rotating shaft 2. It first runs along the direction of the spoke 6 (located inside the spoke 6) to the corresponding end pulley 12 and passes around the end pulley 12. Then it runs along the direction of the spoke 6 (located outside the spoke 6) to the corresponding outer pulley 11 and passes around the outer pulley 11. Then it runs along the direction of the rotating shaft 2 (inclined away from the rotating shaft 2), passes through the outer slip ring 9 (specifically the strip hole 17), and is fixedly connected to the inner slip ring 8 (specifically the disc).

[0035] The inner cable 14 is fixed to the other end of the slide block 7 (the end closest to the pivot 2), first along the direction of the spoke 6 (located inside the spoke 6) to the corresponding inner pulley 10, and then around the inner pulley 10; then along the direction of the pivot 2 (inclined away from the pivot 2), and finally fixedly connected to the outer slip ring 9.

[0036] Specifically, the outer slip ring 9 has M slotted holes 17 on its disc for the outer cable 13 to pass through. The M slotted holes 17 are evenly distributed and are all arranged radially along the outer slip ring 9. The ends of the outer cable 13 or the inner cable 14 are fixed to the disc.

[0037] The synchronous slide rod 15 is arranged in the left-right direction and is specifically a smooth round rod. One end (outer end) is fixed to the outer slip ring 9 of a drive structure (corresponding drive structure), the middle part slides on the inner slip ring 8 of a drive structure (corresponding drive structure, which has a sliding sleeve along the left-right direction), and the other end (inner end) is fixed to the inner slip ring 8 of another drive structure. M synchronous slide rods 15 are evenly distributed and located on a circle concentric with the rotating shaft 2, and the synchronous slide rods 15 of the two drive structures are staggered. The synchronous slide rods 15 slide or are fixed on the disc.

[0038] Among them, see Figure 1-2 In this embodiment of the invention, the fixing ring 5 includes a fixing disc and an inner cylinder, etc. The fixing disc is coaxially fixed on the rotating shaft 2. The cylinder is coaxially arranged with the rotating shaft 2 and there is a gap between the fixing disc and the cylinder. The inner pulley 10 is located at the inner end of the cylinder. One end of the spoke 6 near the rotating shaft 2 is fixed to the inner side of the fixing disc and is arranged around the cylinder. The outer pulley 11 is located on the fixing disc and is located between the rotating shaft 2 and the cylinder. The outer cable 13 and the inner cable 14 pass inward through the cylinder.

[0039] As the cutting wheel rotates 2-4 times, the circumference of the circle formed by the crossbar 3 decreases by 1mm.

[0040] Furthermore, in one of the crossbars 3 of this utility model embodiment, a fixing rod is provided on the side not where the cloth roll is wound. The fixing rod is arranged in the left-right direction and multiple (3-6) fixing clips are arranged side by side on it. The fixing clips are clamped on the fixing rod and fix the starting end of the cloth roll on the fixing rod.

[0041] Example 2

[0042] See Figure 3 Example 2 provides a fabric laying device with an automatically adjustable cutting roller diameter. Its structure is basically the same as that of Example 1, except that the end of the inner cable 14 in this example is fixed at the end of the corresponding strip hole 17 away from the rotating shaft 2.

[0043] Example 3

[0044] See Figure 1-2 Example 3 provides a fabric laying device with an automatically adjustable cutting roller diameter. Its structure is basically the same as that of Example 1, except that: in this example, the spoke 6 has an enlarged portion 18 at the end furthest from the rotating shaft 2. The enlarged portion 18 has through holes along its left-right direction, and the end pulley 12 is located in the through holes. The outer cable 13 passes through the through holes outwards. The ring 4 is fixedly connected to the end of the enlarged portion 18 furthest from the rotating shaft 2.

[0045] Example 4

[0046] See Figure 3-4Example 4 provides a fabric laying device with an automatically adjustable cutting roller diameter. Its structure is basically the same as that of Example 1, except that N is 12 and M is 3 in this example.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fabric laying device with automatically adjustable cutting wheel diameter, comprising a frame (1) and a cutting wheel rotatably mounted thereon, the cutting wheel comprising a rotating shaft (2) on the frame (1) and arranged in the left-right direction, a motor on the frame (1) for driving the rotating shaft (2) to rotate, two spoke wheels arranged side by side on the rotating shaft (2) and N crossbars (3) between the two spoke wheels, the spoke wheels comprising a ring (4), a fixed ring (5) and N spokes (6) between them, the fixed ring (5) being coaxially fixed on the rotating shaft (2), the ring (4) being coaxially arranged with the fixed ring (5), the multiple spokes (6) being evenly distributed and arranged radially along the rotating shaft (2); the spokes (6) of the two spoke wheels are arranged one-to-one, the N crossbars (3) are located on the same circle concentric with the rotating shaft (2), the crossbars (3) are arranged in the left-right direction and are located between the corresponding two spokes (6); characterized in that, The spoke (6) is a slide bar and a slide seat (7) is slidably mounted on it. The left and right ends of the crossbar (3) are respectively fixed on the slide seats (7) on the corresponding spokes (6) of the two spoke wheels. The cutting wheel also includes two drive structures. The two drive structures are used to drive the slide seats (7) on the two spoke wheels to move toward the shaft (2) so that the outer diameter of the cloth roll is always the same. They are located on the left and right sides of the shaft (2) respectively, and on the inner side of the spoke wheels on the corresponding side. The drive structure includes an inner slip ring (8), an outer slip ring (9), a drive mechanism, N inner pulleys (10), N outer pulleys (11), N end pulleys (12), N outer cables (13), N inner cables (14), and M synchronous slide rods (15). The rotating shaft (2) is a hollow structure. The drive mechanism is located inside the rotating shaft (2) and is used to drive the outer slip ring (9) to move left and right. The two drive mechanisms move synchronously. The inner slip ring (8) and the outer slip ring (9) are arranged side by side on the left and right sides. They are located inside the corresponding spoke wheels and slide on the rotating shaft (2). They are coaxial with the rotating shaft (2). The outer slip ring (9) is located outside the inner slip ring (8). Each spoke (6) is provided with one inner pulley (10), one outer pulley (11), one end pulley (12), one outer cable (13), and one inner cable (14). (6) An end pulley (12) is provided at the end away from the rotating shaft (2); an outer pulley (11) is provided on the outer side of the fixed ring (5) corresponding to each spoke (6), and an inner pulley (10) is provided on the inner side of the fixed ring (5) corresponding to each spoke (6); the outer cable (13) is fixed at the end of the slide block (7) away from the rotating shaft (2), and after passing through the end pulley (12) and the outer pulley (11) in sequence, it passes through the outer slip ring (9) and is fixedly connected to the inner slip ring (8); the inner cable (14) is fixed at the other end of the slide block (7), and after passing through the inner pulley (10), it is fixedly connected to the outer slip ring (9); the synchronous slide rod (15) is arranged in the left and right direction, one end of which is fixed on the outer slip ring (9) of a driving structure, the middle part is slidably arranged on the inner slip ring (8) of a driving structure, and the other end of which is fixed on the inner slip ring (8) of another driving structure.

2. The fabric laying device with automatically adjustable cutting wheel diameter according to claim 1, characterized in that, A sliding hole (16) is provided on the rotating shaft (2) and located at the outer slip ring (9). The sliding hole (16) is arranged in the left-right direction. The outer slip ring (9) is connected to the drive mechanism through a connector passing through the sliding hole (16). The drive mechanism includes a servo motor and a lead screw. The servo motor and the lead screw are both located inside the rotating shaft (2). The lead screw is arranged in the left-right direction. It is threadedly connected to the connector and is driven by the servo motor.

3. The fabric laying device with automatically adjustable cutting roller diameter according to claim 1, characterized in that, Both the inner slip ring (8) and the outer slip ring (9) include a sliding sleeve and a disc on its circumference. The sliding sleeve and the disc are coaxially arranged with the rotating shaft (2). The sliding sleeve is sleeved on the rotating shaft (2) and slides on the rotating shaft (2). The end of the outer cable (13) or the inner cable (14) is fixed on the disc. The synchronous slide rod (15) slides or is fixed on the disc.

4. The fabric laying device with automatically adjustable cutting roller diameter according to claim 3, characterized in that, The outer slip ring (9) has M strip holes (17) on its disc for the outer cable (13) to pass through. The M strip holes (17) are evenly distributed and are all arranged along the radial direction of the outer slip ring (9).

5. The fabric laying device with automatically adjustable cutting roller diameter according to claim 4, characterized in that, The end of the inner cable (14) is fixed to the end of the corresponding strip hole (17) away from the rotating shaft (2).

6. The fabric laying device with automatically adjustable cutting roller diameter according to claim 1, characterized in that, N outer pulleys (11) are evenly distributed and located on a circle concentric with the rotating shaft (2), N inner pulleys (10) are evenly distributed and located on a circle concentric with the rotating shaft (2), M synchronous slide rods (15) are evenly distributed and located on a circle concentric with the rotating shaft (2), and the synchronous slide rods (15) of the two drive structures are staggered.

7. The fabric laying device with automatically adjustable cutting roller diameter according to claim 6, characterized in that, The fixing ring (5) includes a fixing plate and a cylinder on its inner side. The fixing plate is coaxially fixed on the rotating shaft (2). The cylinder is coaxially arranged with the rotating shaft (2). The inner pulley (10) is located at the inner end of the cylinder. The spoke (6) is fixed at one end near the rotating shaft (2) on the inner side of the fixing plate and is arranged around the cylinder. The outer pulley (11) is located on the fixing plate and is located between the rotating shaft (2) and the cylinder.

8. The fabric laying device with automatically adjustable cutting roller diameter according to claim 1, characterized in that, The spoke (6) has an enlarged part (18) at the end away from the pivot (2), and the enlarged part (18) has a through hole along the left and right direction. The end pulley (12) is located in the through hole. The ring (4) is fixedly connected to the end of the enlarged part (18) away from the pivot (2).

9. The fabric laying device with automatically adjustable cutting roller diameter according to claim 1, characterized in that, N is 6-16, and M is 2-4.

10. The fabric laying device with automatically adjustable cutting roller diameter according to claim 1, characterized in that, The distance between the crossbar (3) and the rotating shaft (2) is 0.4-1.2m; the circumference of the circle formed by the crossbar (3) decreases by 1mm for every 2-4 rotations of the cutting wheel.

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