A 3D fabric production device and production process capable of preventing cutting of lint

Abstract

This invention relates to the field of fabric production and processing, and provides a 3D fabric production device that prevents lint shedding during cutting. The device includes a frame, on which a combing device and a warp feeding device are mounted. The combing device includes multiple sets of first combing assemblies oscillatingly mounted on the frame, at least one set of second combing assemblies oscillatingly mounted on the frame, and an oscillating device for driving the first and second combing assemblies to oscillate. The warp feeding device includes multiple first unwinding rollers rotatably mounted on the frame, multiple second driving devices for driving the first unwinding rollers to rotate, at least one second unwinding roller rotatably mounted on the frame, and a third driving device for driving the second unwinding rollers to rotate. This invention can form transverse and longitudinal shearing sections on the 3D fabric, avoiding the cutting of a large number of monofilaments that would cause them to fall off, thus improving product quality and production efficiency. It solves the technical problems of large amounts of monofilament lint falling off during 3D fabric cutting, inconvenient cleaning, and low product quality.

Description

Technical Field

[0001] This invention relates to the field of fabric production and processing, and in particular to a 3D fabric production device and process for preventing lint shedding during cutting. Background Technology

[0002] 3D fabric, also known as sandwich mesh fabric, is widely used in mattresses, pillows, car seat cushions, and sofa cushions due to its excellent breathability, elasticity, and support. 3D fabric is typically produced using warp knitting machines. Warp knitting produces 3D fabric with a large surface area. For smaller applications like car seat cushions and sofa cushions, some 3D fabrics require cutting. During the cutting process, a cutting device is used to cut along the cutting line of the 3D fabric, severing a large number of monofilaments. Since the cut ends of the monofilaments become free ends without support, they may extend beyond the edge of the 3D fabric. As a result, a large number of monofilaments will extend beyond the edge of the 3D fabric, affecting not only the aesthetics and product quality but also requiring secondary cutting to remove the exposed monofilaments. Some of the cut monofilaments will still adhere to the 3D fabric and need to be cleaned. A large number of monofilaments fall onto the production equipment, affecting the production environment and requiring cleaning, which consumes manpower and resources. At the same time, the edges of the 3D fabric after cutting will have a large number of sharp monofilament ends, affecting product quality.

[0003] Chinese Patent Application No. 202110774240.7 discloses a warp knitting machine pay-off device. The device includes a base, a pay-off assembly for pay-off during the guide bar movement of the warp knitting machine; a lifting assembly for raising and lowering certain components of the pay-off assembly; a telescopic assembly for telescopically extending or retracting certain components of the pay-off assembly; a driving assembly for driving the rotation of certain components of the pay-off assembly; a limiting assembly for limiting the movement of certain components of the pay-off assembly; a protective assembly for protecting the pay-off assembly; a shock-absorbing base for shock absorption of the entire base; and a dust-collecting assembly for blowing and collecting dust from the base. However, the warp-knitted fabric produced by this device sheds a large amount of monofilament lint during cutting, which is inconvenient to clean and results in low product quality. Summary of the Invention

[0004] Therefore, to address the aforementioned problems, this invention proposes a 3D fabric production device and process that prevents lint shedding during cutting. It solves the technical problems of large amounts of monofilament lint falling off during 3D fabric cutting, resulting in inconvenient cleaning and low product quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A 3D fabric production device for preventing lint shedding during cutting includes a frame, on which a combing device and a warp feeding device are provided;

[0007] The combing device includes multiple sets of first combing assemblies oscillatingly mounted on a frame, at least one set of second combing assemblies oscillatingly mounted on a frame, and an oscillating device for driving the first and second combing assemblies to oscillate. The first combing assembly includes a first fixed plate, multiple first combs mounted on the first fixed plate, at least one adjustable comb slidably mounted on the first fixed plate, and a first driving device for driving the adjustable comb to slide. The second combing assembly includes a second fixed plate and multiple second combs mounted on the second fixed plate. The 3D fabric corresponding to the second combing assembly does not have monofilaments, forming a longitudinal shearing section, and the 3D fabric corresponding to the adjustable comb does not have monofilaments, forming a transverse shearing section.

[0008] The warp feeding device includes a plurality of first unwinding rollers rotatably mounted on the frame, a plurality of second drive devices that drive the first unwinding rollers to rotate, at least one second unwinding roller rotatably mounted on the frame, and a third drive device that drives the second unwinding rollers to rotate. The yarn of the first unwinding rollers is fed to the first guide bar and the second guide bar, and the monofilament of the second unwinding rollers is fed to the adjusting guide bar.

[0009] Further:

[0010] The frame is also equipped with a monofilament compensation device, which is located at the rear end of the second unwinding roller. The monofilament compensation device includes two fixed rollers rotatably mounted on the frame, a lifting seat that is vertically mounted between the two fixed rollers, a lifting device that drives the lifting seat to rise and fall, and at least one lifting roller rotatably mounted on the lifting seat.

[0011] The number of lifting rollers is two, and the two lifting rollers are set horizontally. The two lifting rollers and the two fixed rollers form an isosceles trapezoidal structure.

[0012] The lifting device is a telescopic cylinder.

[0013] The first fixing plate has the same structure as the second fixing plate.

[0014] The second fixed plate is provided with at least one sliding groove, and the second comb is provided with a slider that can slide in the sliding groove.

[0015] The first driving device is a telescopic cylinder or an electric actuator.

[0016] The present invention also provides a production process based on the above-mentioned anti-shedding 3D fabric production device, comprising the following steps:

[0017] (1) Warp feeding: The second drive device drives the first unwind roller to rotate, the first comb of the first comb assembly and the second comb corresponding to the second comb assembly are fed on the same first unwind roller, multiple yarns are fed on the first unwind roller to the corresponding first comb or second comb, the third drive device drives the second unwind roller to rotate, and the monofilament is fed on the second unwind roller to the adjusting comb.

[0018] (2) Forming 3D fabric: The hook is used to weave the yarn and monofilament. The first comb on one side of the comb and its corresponding second comb are adjusted to form the upper layer of fabric. The first comb on the other side of the comb and its corresponding second comb are adjusted to form the lower layer of fabric.

[0019] (3) Forming a longitudinal shear section: The second unwinding roller does not feed monofilaments on the second comb assembly, the hook of the second comb assembly does not have monofilaments connecting the upper and lower fabrics, and there are no dense monofilaments connecting the upper and lower fabrics warp-knitted by the second comb assembly. This part forms a longitudinal shear section with a hollow center.

[0020] (4) Forming a transverse shear section: The second unwind roller decelerates or stops, the monofilament reduces its conveying speed or stops conveying, and at the same time, the first drive device drives the adjusting comb to move upward. The monofilaments on the adjusting comb do not participate in warp knitting. In the transverse direction, there is no dense vertical connection between the upper and lower layers of fabric. This part forms a transverse shear section with a hollow center. After a set time, the second unwind roller speeds up to the recovery speed, and the first drive device drives the adjusting comb to move downward. The monofilaments on the adjusting comb participate in warp knitting, and there is a dense vertical connection between the upper and lower layers of fabric after warp knitting.

[0021] The first fixing plate and the second fixing plate have the same structure. Before step (1), according to the position where the 3D fabric needs to be cut, an adjusting comb is set as the first comb assembly, and the one without adjusting comb is set as the second comb assembly, which can adjust the length of the 3D fabric cutting.

[0022] In step (4), the width of the 3D fabric can be adjusted by controlling and adjusting the frequency of the comb rising and the frequency of the monofilament deceleration and stopping, according to the position where the 3D fabric needs to be cut. At the same time, the width of the transverse cutting section can be adjusted by controlling and adjusting the time of the comb rising and the time of the monofilament deceleration and stopping.

[0023] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:

[0024] This invention adjusts the guide bar to feed the monofilaments. When forming the transverse shearing section, the guide bar is raised, and the monofilament feeding speed is reduced or stopped. The guide bar does not affect the hook needle. It can form a transverse shearing section in the width direction on the 3D fabric. When forming the longitudinal shearing section, no guide bar is set in the second guide bar assembly, and no monofilament is fed. The 3D fabric at the second guide bar assembly forms a longitudinal shearing section in the length direction. When cutting the 3D fabric, the shearing force is small. Only the upper and lower layers of fabric need to be cut, avoiding the cutting of a large number of monofilaments that would cause them to fall off. It also avoids monofilament debris affecting the production environment and equipment, and prevents monofilaments from breaking and extending out of the edge of the 3D fabric. The transverse and longitudinal shearing sections can save a lot of monofilament raw materials, which not only improves product quality and production efficiency, but also optimizes the production environment and saves production costs. Furthermore, the monofilament compensation device can buffer and compensate for the length of the monofilament. By adjusting the lifting roller, the length of the monofilament during the warp feeding process can be changed, allowing the speed of the monofilament on the adjusting guide bar to drop to 0 or near 0 in a short time, and also allowing the speed of the monofilament on the adjusting guide bar to rise to the system-set speed in a short time. The third drive device does not need to drastically decelerate or accelerate in a short period of time, improving the stability of the equipment. Furthermore, two lifting rollers are used, which provides better stability and prevents excessive changes in the monofilament conveying angle. Furthermore, the first and second fixed plates have the same structure, which can adjust the length of the 3D fabric cutting. Furthermore, this invention can adjust the positions of the transverse cutting section and the longitudinal cutting section as needed to cut 3D fabrics of different specifications. Attached Figure Description

[0025] Figure 1 This is a simplified structural diagram of the 3D fabric production device of the present invention.

[0026] Figure 2 This is a simplified diagram showing the distribution of the first comb assembly and the second comb assembly.

[0027] Figure 3 yes Figure 2 A simplified diagram illustrating the principle of longitudinal shearing in 3D fabric.

[0028] Figure 4 yes Figure 2 A simplified diagram illustrating the principle of the transverse shearing section formed after the centrally adjusted comb moves upward.

[0029] Figure 5 This is a schematic diagram of the structure of the first comb assembly.

[0030] Figure 6 This is a schematic diagram of the structure for adjusting the upward movement of the comb on the first comb assembly.

[0031] Figure 7 This is a schematic diagram of the second comb assembly.

[0032] Figure 8 This is a schematic diagram of the wire feeding device.

[0033] Figure 9 This is a schematic diagram of the monofilament compensation device.

[0034] Figure 10 This is a structural diagram of a 3D fabric.

[0035] Figure 11 It is a cross-sectional view of the 3D fabric.

[0036] Figure 12 This is a schematic diagram of the structure of the present invention, which includes a first cutting device, a second cutting device, and a driving device.

[0037] Figure 13 This is a schematic diagram of the first cutting device.

[0038] Figure 14 This is a schematic diagram of the second cutting device.

[0039] Figure 15 This is a schematic diagram of the drive device.

[0040] Figure 16 This is a schematic diagram of the structure of the present invention, which includes a first guide device and a second guide device.

[0041] Figure 17 This is a schematic diagram of the first guiding device.

[0042] Figure 18 This is a schematic diagram of the second guide device.

[0043] Figure label:

[0044] 1. Combing device; 11. First combing assembly; 111. First fixing plate; 112. First comb; 113. Adjusting comb; 114. First driving device; 12. Second comb assembly; 121. Second fixing plate; 122. Second comb; 13. Swinging device; 2. Warp feed device; 21. First unwinding roller; 22. Second driving device; 23. Second unwinding roller; 24. Third driving device; 3. 3D fabric; 31. Monofilament; 32. Upper layer fabric; 33. Lower layer fabric; 34. Longitudinal shearing section; 35. Transverse shearing section; 4. Monofilament compensation device; 41. Fixing roller; 42. Lifting seat; 43. Lifting device; 44. Lifting roller; 5. First cutter Device; 51, First bottom roller; 52, First cutting roller; 520, First fixing hole; 53, Fourth drive device; 54, Longitudinal cutter; 6, Second cutting device; 61, Second bottom roller; 62, Second cutting roller; 63, Fifth drive device; 64, Cross cutter; 7, Conveying device; 71, Conveying roller; 72, Sixth drive device; 8, First guide device; 81, First guide roller; 810, Second fixing hole; 82, Seventh drive device; 83, First baffle; 84, First guide groove; 9, Second guide device; 91, Second guide roller; 910, Third fixing hole; 92, Eighth drive device; 93, Second baffle; 94, Second guide groove; 10, Frame. Detailed Implementation

[0045] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0046] refer to Figures 1 to 18 This embodiment provides a 3D fabric production device that prevents lint from falling out during cutting, including a frame 10, on which a combing device 1 and a warp feeding device 2 are provided.

[0047] The combing device 1 includes multiple sets of first combing assemblies 11 oscillatingly mounted on the frame 10, at least one set of second combing assemblies 12 oscillatingly mounted on the frame 10, and an oscillating device 13 for driving the first combing assemblies 11 and the second combing assemblies 12 to oscillate. The first combing assembly 11 includes a first fixed plate 111, multiple first combs 112 mounted on the first fixed plate 111, an adjusting comb 113 slidably mounted on the first fixed plate 111, and a first driving device 114 for driving the adjusting comb 113 to slide. The second combing assembly 12 includes a second fixed plate 121 and multiple second combs 122 mounted on the second fixed plate 121. The second fixed plate 121 is provided with a sliding groove, and the second combs 122 are provided with sliders that can slide in the sliding groove. The first fixing plate 111 and the second fixing plate 121 have the same structure. The 3D fabric 3 corresponding to the second comb assembly 12 does not have a single filament 31, forming a longitudinal shearing part 34. The 3D fabric 3 corresponding to the adjusting comb 113 does not have a single filament 31, forming a transverse shearing part 35.

[0048] The warp feeding device 2 includes a plurality of first unwinding rollers 21 rotatably mounted on the frame 10, a plurality of second drive devices 22 that drive the first unwinding rollers 21 to rotate, a second unwinding roller 23 rotatably mounted on the frame 10, and a third drive device 24 that drives the second unwinding rollers 23 to rotate. The yarn of the first unwinding rollers 21 is routed to the first guide bar 112 and the second guide bar 122, and the monofilaments 31 of the second unwinding rollers 23 are routed to the adjusting guide bar 113.

[0049] The frame 10 is also equipped with a monofilament compensation device 4, which is located at the rear end of the second unwinding roller 23. The monofilament compensation device 4 includes two fixed rollers 41 rotatably mounted on the frame 10, a lifting seat 42 vertically mounted between the two fixed rollers 41, a lifting device 43 for driving the lifting seat 42 to rise and fall, and two lifting rollers 44 rotatably mounted on the lifting seat 42. The lifting device 43 is a telescopic cylinder.

[0050] The aforementioned first driving device 114 can be a telescopic cylinder, an electric actuator, or other devices, depending on the specific circumstances.

[0051] The aforementioned swinging device 13 is a known device and will not be described in detail here.

[0052] The second drive device 22 and the third drive device 24 mentioned above can be motor assemblies or other devices, which are well known devices and will not be described in detail here.

[0053] The aforementioned lifting device 43 can also be a linear motor or other devices, which are well-known devices and will not be described in detail here.

[0054] The aforementioned lifting rollers 44 can be one, two, three, or even more, depending on the specific circumstances.

[0055] The present invention also provides a production process based on the above-mentioned anti-shedding 3D fabric production device, comprising the following steps:

[0056] (1) Warp feeding: The second drive device 22 drives the first unwind roller 21 to rotate. The first comb 112 of the first comb assembly 11 and the second comb 122 corresponding to the second comb assembly 12 are fed on the same first unwind roller 21. Multiple yarns are fed on the first unwind roller 21 to the corresponding first comb 112 or second comb 122. The third drive device 24 drives the second unwind roller 23 to rotate. The monofilament 31 is fed on the second unwind roller 23 to the adjusting comb 113.

[0057] (2) Forming 3D fabric 3: The hook is used to weave the yarn and monofilament 31. The first comb 112 on one side of the comb 113 and its corresponding second comb 122 are adjusted to form the upper fabric 32. The first comb 112 on the other side of the comb 113 and its corresponding second comb 122 are adjusted to form the lower fabric 33.

[0058] (3) Forming a longitudinal shearing section 34: The second unwinding roller 23 does not feed monofilaments 31 on the second comb assembly 12, the hook of the second comb assembly 12 does not have monofilaments 31 connecting the upper fabric 32 and the lower fabric 33, and there are no dense monofilaments 31 connecting the upper fabric 32 and the lower fabric 33 warp-knitted by the second comb assembly 12. This part forms a longitudinal shearing section 34 with a hollow center.

[0059] (4) Forming a transverse shear section 35: The second unwind roller 23 decelerates or stops, the monofilament 31 reduces its conveying speed or stops conveying, and at the same time, the first drive device 114 drives the adjusting comb 113 to move upward. The monofilament 31 on the adjusting comb 113 does not participate in warp knitting. In the transverse direction, there is no dense connection between the upper fabric 32 and the lower fabric 33. This part forms a transverse shear section 35 with a hollow center. After a set time, the second unwind roller 23 speeds up to the recovery speed, and the first drive device 114 drives the adjusting comb 113 to move downward. The monofilament 31 on the adjusting comb 113 participates in warp knitting, and there is a dense connection between the upper fabric 32 and the lower fabric 33 after warp knitting.

[0060] The first fixing plate 111 and the second fixing plate 121 have the same structure. Before step (1), according to the position where the 3D fabric 3 needs to be cut, the adjusting comb 113 is set as the first comb assembly 11, and the one without the adjusting comb 113 is set as the second comb assembly 12, which can adjust the length of the 3D fabric 3 to be cut.

[0061] In step (4), the width of the 3D fabric 3 can be adjusted by controlling and adjusting the rising frequency of the comb 113 and the deceleration and stopping frequency of the monofilament 31 according to the position where the 3D fabric 3 needs to be cut. At the same time, the width of the transverse cutting section 35 can be adjusted by controlling and adjusting the rising time of the comb 113 and the deceleration and stopping time of the monofilament 31.

[0062] The present invention can be implemented using the following structure:

[0063] The system also includes a first cutting device 5, a second cutting device 6, and a conveying device 7. The first cutting device 5 includes a first bottom roller 51 and a first cutting roller 52 rotatably mounted on the frame 10, and a fourth driving device 53 for driving the first bottom roller 51 and the first cutting roller 52 to rotate. The outer surface of the first cutting roller 52 is provided with a longitudinal cutting blade 54, which can cut the longitudinal shearing portion 34. The second cutting device 6 includes a second bottom roller 61 and a second cutting roller 62 rotatably mounted on the frame 10, and a fifth driving device 63 for driving the second bottom roller 61 and the second cutting roller 62 to rotate. The outer surface of the second cutting roller 62 is provided with a transverse cutting blade 64, which can cut the transverse shearing portion 35. The conveying device 7 includes two conveying rollers 71 rotatably mounted on the frame 10 and a sixth driving device 72 for driving the conveying rollers 71 to rotate.

[0064] The first bottom roller 51 is provided with a plurality of first fixing holes 520, and the longitudinal cutter 54 is fixed in the first fixing holes 520 in an adjustable position by screws.

[0065] The first cutting device 5 has a first guide device 8 at its front end. The first guide device 8 includes a first guide roller 81 rotatably mounted on the frame 10 and a seventh drive device 82 that drives the first guide roller 81 to rotate. The first guide roller 81 is fitted with two first baffles 83, which are annular structures. The first guide roller 81 is provided with a plurality of second fixing holes 810. The first baffles 83 are fixed in position to the second fixing holes 810 by screws. A first guide groove 84 is formed between the two first baffles 83.

[0066] The second cutting device 6 has a second guide device 9 at its front end. The second guide device 9 includes a second guide roller 91 rotatably mounted on the frame 10 and an eighth drive device 92 that drives the second guide roller 91 to rotate. The second guide roller 91 is fitted with at least one second baffle 93. The second baffle 93 has an annular structure. The second guide roller 91 has a plurality of third fixing holes 910. The second baffle 93 is fixed to the third fixing hole 910 in an adjustable position by screws. A second guide groove 94 is formed between two adjacent second baffles 93.

[0067] The aforementioned fourth drive device 53, fifth drive device 63, sixth drive device 72, seventh drive device 82, and eighth drive device 92 may be motor assemblies or other devices, which are well-known devices and will not be described in detail here.

[0068] The present invention also includes step (5): after the 3D fabric 3 is formed on the warp knitting machine, the conveying device 7 conveys the 3D fabric 3, the 3D fabric 3 passes through the first guiding device 8, the first guiding device 8 straightens the 3D fabric 3 and enters the first cutting device 5, the first cutting device 5 cuts the 3D fabric 3 along the longitudinal shearing part 34, the cut 3D fabric 3 enters the second guiding device 9, each longitudinally cut 3D fabric 3 enters the second guiding groove 94 and is straightened, the second cutting device 6 cuts the 3D fabric 3 along the transverse shearing part 35.

[0069] This structure, during production, uses a first guide device 8 and a second guide device 9 to guide the cutting of the 3D fabric 3, preventing deviation during cutting. Cutting is performed during production, saving the time and labor costs of transporting the 3D fabric 3 to the cutting device, and saving the time of manually searching for the longitudinal cutting section 34 and the transverse cutting section 35, greatly improving production efficiency and reducing production costs.

[0070] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A 3D fabric production device that prevents lint from falling out during cutting, characterized in that: Includes a frame, on which a combing device and a warp feeding device are provided; The combing device includes multiple sets of first combing assemblies oscillatingly mounted on a frame, at least one set of second combing assemblies oscillatingly mounted on a frame, and an oscillating device for driving the first and second combing assemblies to oscillate. The first combing assembly includes a first fixed plate, multiple first combs mounted on the first fixed plate, at least one adjustable comb slidably mounted on the first fixed plate, and a first driving device for driving the adjustable comb to slide. The second combing assembly includes a second fixed plate and multiple second combs mounted on the second fixed plate. The 3D fabric corresponding to the second combing assembly does not have monofilaments, forming a longitudinal shearing section, and the 3D fabric corresponding to the adjustable comb does not have monofilaments, forming a transverse shearing section. The warp feeding device includes a plurality of first unwinding rollers rotatably mounted on the frame, a plurality of second driving devices that drive the first unwinding rollers to rotate, at least one second unwinding roller rotatably mounted on the frame, and a third driving device that drives the second unwinding rollers to rotate. The yarn of the first unwinding rollers is fed to the first guide bar and the second guide bar, and the monofilament of the second unwinding rollers is fed to the adjusting guide bar. The frame is also equipped with a monofilament compensation device, which is located at the rear end of the second unwinding roller. The monofilament compensation device includes two fixed rollers rotatably mounted on the frame, a lifting seat that is vertically mounted between the two fixed rollers, a lifting device that drives the lifting seat to rise and fall, and at least one lifting roller rotatably mounted on the lifting seat. It also includes a first cutting device, a second cutting device, and a conveying device. The first cutting device includes a first bottom roller and a first cutting roller rotatably mounted on a frame, and a fourth driving device for driving the first bottom roller and the first cutting roller to rotate. The outer surface of the first cutting roller is provided with a longitudinal cutting blade, which can cut the longitudinal shearing portion. The second cutting device includes a second bottom roller and a second cutting roller rotatably mounted on a frame, and a fifth driving device for driving the second bottom roller and the second cutting roller to rotate. The outer surface of the second cutting roller is provided with a transverse cutting blade, which can cut the transverse shearing portion. The conveying device includes two conveying rollers rotatably mounted on a frame and a sixth driving device for driving the conveying rollers to rotate.

2. The 3D fabric production device for preventing lint shedding during cutting according to claim 1, characterized in that: The number of lifting rollers is two, and the two lifting rollers are set horizontally. The two lifting rollers and the two fixed rollers form an isosceles trapezoidal structure.

3. The 3D fabric production device for preventing lint shedding during cutting according to claim 1, characterized in that: The lifting device is a telescopic cylinder.

4. The 3D fabric production device for preventing lint shedding during cutting according to claim 1, characterized in that: The first fixing plate has the same structure as the second fixing plate.

5. The 3D fabric production device for preventing lint shedding during cutting according to claim 1, characterized in that: The second fixed plate is provided with at least one sliding groove, and the second comb is provided with a slider that can slide in the sliding groove.

6. The 3D fabric production device for preventing lint shedding during cutting according to claim 1, characterized in that: The first driving device is a telescopic cylinder or an electric actuator.

7. A production process for a 3D fabric production device for preventing lint shedding during cutting, as described in claim 1, characterized in that: Includes the following steps: (1) Warp feeding: The second drive device drives the first unwind roller to rotate, the first comb of the first comb assembly and the second comb corresponding to the second comb assembly are fed on the same first unwind roller, multiple yarns are fed to the corresponding first comb or second comb on the first unwind roller, the third drive device drives the second unwind roller to rotate, and the monofilament is fed to the adjusting comb on the second unwind roller; (2) Forming 3D fabric: The hook is used to weave the yarn and monofilament. The first comb on one side of the comb bar and its corresponding second comb bar are adjusted to form the upper layer of fabric. The first comb on the other side of the comb bar and its corresponding second comb bar are adjusted to form the lower layer of fabric. (3) Forming a longitudinal shearing section: The second unwinding roller does not feed monofilaments on the second comb assembly, the hook of the second comb assembly does not have monofilaments connecting the upper and lower fabrics, and there are no dense monofilaments connecting the upper and lower fabrics warp-knitted by the second comb assembly. This part forms a longitudinal shearing section with a hollow center. (4) Forming a transverse shear section: The second unwind roller decelerates or stops, the monofilament reduces its conveying speed or stops conveying, and at the same time, the first drive device drives the adjusting comb to move upward. The monofilaments on the adjusting comb do not participate in warp knitting. In the transverse direction, there is no dense vertical connection between the upper and lower layers of fabric. This part forms a transverse shear section with a hollow center. After a set time, the second unwind roller speeds up to the recovery speed, and the first drive device drives the adjusting comb to move downward. The monofilaments on the adjusting comb participate in warp knitting, and there is a dense vertical connection between the upper and lower layers of fabric after warp knitting.

8. The production process of the 3D fabric production device for preventing lint shedding during cutting according to claim 7, characterized in that: The first fixing plate and the second fixing plate have the same structure. Before step (1), according to the position where the 3D fabric needs to be cut, an adjusting comb is set as the first comb assembly, and the one without adjusting comb is set as the second comb assembly, which can adjust the length of the 3D fabric cutting.

9. The production process of a 3D fabric production device for preventing lint shedding during cutting, as described in claim 7, is characterized in that: In step (4), the width of the 3D fabric can be adjusted by controlling and adjusting the frequency of the comb rising and the frequency of the monofilament deceleration and stopping, according to the position where the 3D fabric needs to be cut. At the same time, the width of the transverse cutting section can be adjusted by controlling and adjusting the time of the comb rising and the time of the monofilament deceleration and stopping.

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