A filament cutting device and working method for circulating nylon filament production

Abstract

The invention relates to the field of filament cutting devices, and discloses a filament cutting device for circulating nylon filament production and a working method. The filament cutting device is provided with a material bin, a waste winding roller, a rotary cutter, a filament cutting device body, and a winding roller in sequence. Nylon raw materials are wound in the material bin, and the nylon raw materials are wound on the winding roller after passing through the waste winding roller, the filament cutting device body, and the filament cutting device body in sequence. The rotary cutter is driven to swing by a motor and cuts the nylon raw materials into nylon filaments when it contacts the nylon raw materials. An adjustable clamping device 2 is designed, and a motor 2 is used to drive a lead screw slider to move on a guide rail, thereby dynamically adjusting the spacing between a clamping plate 2 and a clamping device 1, allowing the nylon filaments to be quickly released after cutting is completed, so that they can move smoothly to the next processing stage without manual intervention. The automatic adjustment device driven by the motor not only reduces the time for manual adjustment of the clamping device, but also improves the accuracy of the adjustment.

Description

Technical Field

[0001] The invention relates to the field of slitting devices, in particular to a slitting device and a working method for circulating nylon filament production. Background Art

[0002] As an important synthetic fiber, nylon filament has excellent abrasion resistance, resilience, wrinkle resistance and high strength, and is widely used in knitting, silk industry, synthetic fiber manufacturing and medical sewing thread. With the rapid development of the textile industry, the demand for nylon filament is increasing, and at the same time, higher requirements are placed on the quality and efficiency of slicing.

[0003] After the nylon filaments are cut by the slitting device in the prior art, the filaments are clamped and difficult to move, and the clamping device needs to be manually adjusted, making it inconvenient to cut again and unable to form an assembly line operation, thereby reducing the slitting efficiency. Summary of the invention

[0004] The invention provides a slitting device and a working method for circulating nylon filament production, which overcome the shortcomings described in the background technology.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A slitting device for producing circulating nylon filaments, the slitting device is provided with a hopper, a waste winding roller, a rotary cutter, a slitting device body, and a winding roller in sequence, nylon raw materials are wound in the hopper, the nylon raw materials are wound on the winding roller after passing through the waste winding roller, the slitting device body, and the slitting device body in sequence, the rotary cutter is driven to swing by a motor, and cuts the nylon raw materials into nylon filaments when it hits the nylon raw materials;

[0007] The wire cutting device body is provided with a clamping device 1, a clamping device 2 and a lifting cutter. The lifting cutter is arranged between the clamping device 1 and the clamping device 2. The lifting cutter is driven to rise and fall by electric push rods at the ends of both sides. The clamping device 2 is installed in the wire cutting device body through adjustment devices arranged at the ends of both sides thereof, so that the distance between the clamping device 2 and the clamping device 1 can be adjusted through the two adjustment devices.

[0008] A preferred technical solution, the clamping device 2 includes two clamping plates symmetrically arranged in the upper and lower parts and adjustment devices arranged at both ends of each clamping plate 2, the two adjustment devices each include a screw slider, a guide rail and a motor 2, the screw slider is connected to the end of the clamping plate 2 and is slid in the guide rail, the motor 2 is arranged on the outside of the guide rail, and the screw arranged on the output shaft of the motor 2 extends into the guide rail and passes through the screw slider to form a threaded connection with the screw slider, so that when the output shaft of the drive motor 2 rotates, the distance between the clamping plate 2 and the clamping device 1 can be adjusted by pushing the screw slider.

[0009] A preferred technical solution, the ends of the two sides of the clamping plate 2 located on the upper side are respectively provided with an adjusting telescopic rod 1, and the output shafts of the two adjusting telescopic rods 1 are both extended downward to be connected to the clamping plate 2 located on the lower side, so as to drive the output shaft of the adjusting telescopic rod 1 to extend and retract, adjust the movement of the clamping plate 2 located on the lower side, and clamp the nylon filament by adjusting the distance between the two clamping plates 2;

[0010] The adjacent surfaces of the two clamping plates are respectively provided with a channel 1 and a channel 2. The channel 1 is connected to an external air compressor through a connecting pipe 1 to extract air, and the channel 2 is connected to an external air compressor through a connecting pipe 2 to blow out air. The lower end of the channel is provided with two inclined air holes 1, and the air holes 1 are inclined toward the clamping device 1. The upper end of the channel 2 is provided with two inclined air holes 2, and the air holes 2 are inclined toward the side away from the clamping device 1.

[0011] The port of the air hole 1 is arranged closer to the clamping device 1 than the port of the air hole 2;

[0012] The channel 1 and the channel 2 are both C-shaped structures, and an air leakage pipe is arranged between the air hole 1 at both ends of the channel 1.

[0013] In a preferred technical solution, the vent pipe includes a pipe body and a closing piece symmetrically arranged in the pipe body, and the two symmetrically arranged closing pieces form a flared structure, and the end with a larger diameter of the flared structure is arranged toward the air hole one of the two air holes one away from the clamping device one;

[0014] The upper and lower adjacent closing pieces abut against each other, and the ends of the two closing pieces close to the clamping device are connected to the inner side of the tube body through a support bar, and a step edge recessed toward the flared structure is provided in the middle of the support bar. When the two closing pieces are unfolded, the connection ends of the closing pieces and the tube body are passed through, and the step edge in the middle of the support bar is recessed inward.

[0015] A preferred technical solution, the clamping device 1 includes a symmetrically arranged clamping plate 1, and the ends of the two sides of the clamping plate 1 located on the upper side are respectively provided with an adjustable telescopic rod 2, and the output shaft of the adjustable telescopic rod 2 extends downward to be connected to the clamping plate 1 located on the lower side, so as to drive the output shaft of the adjustable telescopic rod 2 to extend and retract, and adjust the clamping plate 1 located on the lower side to move, and the nylon filament is clamped by adjusting the distance between the two clamping plates 1;

[0016] The adjustable telescopic rods one and two both include a telescopic cylinder, which is fixed by a fixing frame. The telescopic cylinder includes a cylinder body, a threaded rod, and a nut. The cylinder body is provided with an air cavity, and the air cavity is connected to an air compressor to produce positive and negative pressure. The threaded rod is inserted into the air cavity and a piston connection is formed through a rubber air-sealing block at the end thereof. A nut is provided on the surface of the threaded rod outside the air cavity, and the nut and the threaded rod form a threaded connection, so that the distance between the nut and the cylinder body can be adjusted by turning the nut, and the contraction distance of the threaded rod can be limited.

[0017] A working method of a slitting device for producing circulating nylon filaments is applied to the slitting device for producing circulating nylon filaments. During the slitting operation, the nylon filaments to be cut into segments are formed by a rotating cutter in sequence, passed through a slitting device body, and finally wound on a winding roller. The nylon filaments are clamped by a clamping device 1 and a clamping device 2, and the nylon filaments are cut into segments by a lifting cutter.

[0018] When the nylon filaments are cut by the lifting cutter, the nylon filaments on the left and right sides of the lifting cutter need to be clamped by the clamping plate 1 and the clamping plate 2 respectively, and before the winding roller rewinds the nylon filaments, the air compressor connected to the connecting pipe 1 is used to create negative pressure to extract air, and the adjustment devices at both ends of the clamping plate 2 are used to drive the clamping plate 2 to approach the clamping device 1 to extract and absorb the cut nylon filaments, and the air compressor connected to the connecting pipe 2 is used to create positive pressure to blow out the air, so that the nylon filaments sucked between the two clamping plates 2 are blown toward the winding roller;

[0019] Among them, the two air compressors connected with the connecting pipe 1 and the connecting pipe 2 operate at intervals.

[0020] Compared with the prior art, this technical solution has the following advantages:

[0021] By designing an adjustable clamping device 2, a motor 2 is used to drive the lead screw slider to move on the guide rail, thereby dynamically adjusting the distance between the clamping plate 2 and the clamping device 1. This design allows the nylon filament to be quickly released after the cutting is completed, so that it can move smoothly to the next processing stage without human intervention. The motor-driven automatic adjustment device not only reduces the time for manual adjustment of the clamping device, but also improves the accuracy of the adjustment, which means that the wire cutting device can adapt to nylon raw materials of different diameters or thicknesses more quickly, thereby improving the overall wire cutting efficiency; and the wire cutting device realizes the automation of the wire cutting process through the lifting cutter driven by the electric push rod and the clamping device 2 driven by the motor 2. This design enables the wire cutting device to perform cutting operations continuously and stably without frequent human intervention, thereby meeting the requirements of assembly line operations.

[0022] By performing intermittent operation with two air compressors connected to connecting pipe one and connecting pipe two, the two air compressors can be responsible for different stages of the wire cutting process respectively. One air compressor creates negative pressure through connecting pipe one immediately after wire cutting to extract and absorb the cut nylon filaments, ensuring that the nylon filaments after wire cutting will not scatter or deviate from the predetermined path due to inertia or external force. This step is essential to maintaining the continuity and accuracy of the wire cutting operation. While the negative pressure is being extracted, the other air compressor is in standby mode through connecting pipe two. Once the negative pressure extraction is completed, it starts immediately and creates positive pressure to blow the nylon filaments sucked between the two clamping plates two toward the winding roller. This intermittent operation method avoids the confusion or damage that may occur to the nylon filaments in the transition stage between wire cutting and winding, and effectively reduces the waste of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 This is an overall diagram of the present invention.

[0025] Figure 2 It is a schematic diagram of the slicing device body 4.

[0026] Figure 3 It is a schematic diagram of clamping plate 421.

[0027] Figure 4 It is a three-dimensional schematic diagram of the clamping plate 421.

[0028] Figure 5 It is a half-section schematic diagram of the clamping plate 421.

[0029] Figure 6 It is a schematic diagram of the vent pipe 4214.

[0030] Figure 7 It is a schematic diagram of a clamping plate 411.

[0031] Figure 8 It is a schematic diagram of the telescopic cylinder 100.

[0032] In the figure: Silo 1;

[0033] Waste winding roller 2;

[0034] Rotating cutter 3, motor 1 31;

[0035] The wire cutting device body 4, the clamping device 1 41, the clamping plate 1 411, the clamping device 2 42, the lifting cutter 43, and the electric push rod 431;

[0036] Clamping plate 2 421, connecting pipe 2 4211, channel 1 4212, connecting pipe 1 4213, vent pipe 4214, channel 2 4215, screw slider 422, guide rail 423, motor 2 424, screw 4241;

[0037] Tube body 2141, closing piece 2142, support bar 2143;

[0038] Telescopic cylinder 100 , cylinder body 101 , air cavity 1011 , threaded rod 102 , rubber air-sealing block 1021 , nut 103 , fixing frame 110 .

[0039] Winding roller 5. DETAILED DESCRIPTION

[0040] Embodiment 1: Figures 1 to 8 As shown, in this embodiment, a slitting device for producing circulating nylon filaments is proposed, and the slitting device is provided with a hopper 1, a waste winding roller 2, a rotary cutter 3, a slitting device body 4, and a winding roller 5. Nylon raw materials are wound in the hopper 1, and the nylon raw materials are wound on the winding roller 5 after passing through the waste winding roller 2, the slitting device body 4, and the slitting device body 4. The rotary cutter 3 is driven to swing by a motor 31, and cuts the nylon raw materials into nylon filaments when it hits the nylon raw materials.

[0041] The wire cutting device body 4 is provided with a clamping device 1 41, a clamping device 2 42, and a lifting cutter 43. The lifting cutter 43 is arranged between the clamping device 1 41 and the clamping device 2 42. The lifting cutter 43 is driven to rise and fall by electric push rods 431 at the ends of both sides. The clamping device 2 42 is installed in the wire cutting device body 4 by adjusting devices arranged at the ends of both sides thereof, so that the distance between the clamping device 2 42 and the clamping device 1 41 can be adjusted by two adjusting devices. The clamping devices 1 and 2 are used to stably clamp the nylon raw material during the wire cutting process to ensure the accuracy of cutting. By setting up two clamping devices, after the cutting is completed, the position of one of the clamping devices, in this case the clamping device 2 42, can be adjusted to release the clamped nylon filament so that it can be smoothly moved to the next processing stage.

[0042] When the nylon raw material needs to be cut, the lifting cutter 43 descends and cuts the raw material; after the cutting is completed, the lifting cutter 43 rises and no longer hinders the movement of the nylon filaments.

[0043] Furthermore, the clamping device 42 includes a clamping plate 421 symmetrically arranged in an upper and lower manner and an adjusting device arranged at both ends of each clamping plate 421. The two adjusting devices include a screw slider 422, a guide rail 423 and a motor 424. The screw slider 422 is connected to the end of the clamping plate 421 and is slidably arranged in the guide rail 423. The motor 424 is arranged on the outside of the guide rail 423, and the screw 4241 arranged on the output shaft of the motor 424 extends into the guide rail 423 and passes through the screw slider 422 to form a threaded connection with the screw slider 422. When the output shaft of the driving motor 424 rotates, the distance between the clamping plate 421 and the clamping device 41 is adjusted by pushing the screw slider 422. After cutting, the nylon filaments are often tightly fixed by the clamping device and are not easy to move in the traditional wire cutting device. In this embodiment, by designing an adjustable clamping device 42, The motor 2 424 is used to drive the lead screw slider 422 to move on the guide rail 423, so as to dynamically adjust the distance between the clamping plate 2 421 and the clamping device 1 41. This design allows the nylon filament to be released quickly after the cutting is completed, so that it can move smoothly to the next processing stage without manual intervention. The automatic adjustment device driven by the motor not only reduces the time for manual adjustment of the clamping device, but also improves the accuracy of the adjustment, which means that the wire cutting device can adapt to nylon raw materials of different diameters or thicknesses more quickly, thereby improving the overall wire cutting efficiency. The wire cutting device in this embodiment realizes the automation of the wire cutting process through the lifting cutter 43 driven by the electric push rod 431 and the clamping device 2 42 driven by the motor 2 424. This design enables the wire cutting device to perform cutting operations continuously and stably without frequent manual intervention, thereby meeting the requirements of assembly line operations.

[0044] Among them, the ends of both sides of the clamping plate 421 located on the upper side are respectively provided with adjusting telescopic rods 1, and the output shafts of the two adjusting telescopic rods 1 are extended downward to be connected with the clamping plate 421 located on the lower side, so as to drive the output shaft of the adjusting telescopic rod 1 to extend and retract, adjust the movement of the clamping plate 421 located on the lower side, and clamp the nylon filament by adjusting the distance between the two clamping plates 421;

[0045] Adjacent surfaces of the two clamping plates 421 are respectively provided with a channel 1 4212 and a channel 2 4215. The channel 1 4212 is connected to an external air compressor through a connecting pipe 1 4213 to extract air, and the channel 2 4215 is connected to an external air compressor through a connecting pipe 2 4211 to blow out air. The lower end of the channel 1 4212 is provided with two inclined air holes 1, which are inclined toward the clamping device 1 41, and the upper end of the channel 2 4215 is provided with two inclined air holes 2, which are inclined toward the side away from the clamping device 1 41, and the port of the air hole 1 is arranged closer to the clamping device 1 41 than the port of the air hole 2. The channel 1 4212 and the channel 2 4215 are both C-shaped structures, and an air release pipe 4214 is arranged between the air holes 1 at both ends of the channel 1 4212;

[0046] The clamping device 2 42 adopts a dynamic clamping and releasing mechanism, which can automatically adjust the clamping force according to the needs of the wire cutting process. This mechanism avoids the problem of the nylon filament being difficult to move due to excessive clamping force in traditional wire cutting devices, while reducing the need for manual intervention and improving wire cutting efficiency.

[0047] The clamping device 2 has a built-in channel design that uses the air flow provided by the air compressor to achieve auxiliary clamping and release of the nylon filaments. During the clamping stage, pressure is applied to the nylon filaments through specific air holes to enhance their stability; during the release stage, air is blown out through another set of air holes to assist the smooth movement of the nylon filaments. This design not only improves the cutting accuracy, but also reduces the damage to the nylon filaments during the cutting process.

[0048] The adjustment mechanism of the clamping device 242 is intelligent and can automatically adjust the clamping distance and clamping force according to the specifications of the nylon filament and the cutting requirements. This feature enables the cutting device to more flexibly adapt to nylon raw materials of different diameters or thicknesses, improving the versatility and efficiency of the cutting operation.

[0049] Furthermore, the vent pipe 4214 includes a tube body 2141 and a closing piece 2142 symmetrically arranged in the tube body 2141, and the two symmetrically arranged closing pieces 2142 form a flared structure, and the end with a larger diameter of the flared structure is arranged toward the air hole one of the two air holes one away from the clamping device one 41;

[0050] The two adjacent closing pieces 2142 abut against each other, and the ends of the two closing pieces 2142 near the clamping device 41 are connected to the inner side of the tube body 2141 through a support bar 2143. The middle part of the support bar 2143 is provided with a step edge that is recessed toward the flared structure. When the two closing pieces 2142 are unfolded, the connection ends of the closing pieces 2142 and the tube body 2141 are passed through, and the step edge in the middle part of the support bar 2143 is recessed inwards.

[0051] It should be explained that the function of the vent pipe 4214 is to prevent the airflow from being drawn out from the air hole 1 near 41 when the air hole 1 near 41 is blocked by the nylon filament or the sheet-like object. Since the pressure in the channel 1 4212 remains unchanged, the pressure at the vent pipe 4214 will increase, so that the symmetrically arranged closing pieces 2142 in the vent pipe 4214 will unfold, allowing the airflow to flow and draw air through another air hole 1, thereby ensuring the function of drawing out the nylon filament.

[0052] The design of the vent pipe 4214 is a key innovation in the clamping device 2 42, which cleverly solves the problem of air flow obstruction that may be caused when the air hole 1 is blocked by nylon filaments or sheets. The following is a detailed description of the structure of the vent pipe 4214 and how it solves the corresponding problem:

[0053] The vent pipe 4214 is mainly composed of a pipe body 2141 and a closing piece 2142 symmetrically arranged in the pipe body. The two closing pieces 2142 are symmetrical to each other and form a flared structure. The end with a larger diameter is arranged toward the air hole 1 away from the clamping device 141. This design makes it possible for the air flow to be smoothly drawn out from the air hole 1 when the air flows in the channel 1 4212 if the air hole 1 close to the clamping device 141 is blocked, thereby causing the pressure in the area of ​​the channel 1 4212 to remain unchanged or slightly increase. At this time, the vent pipe 4214 is The effect of 214 begins to appear. Due to the change in pressure in channel 1 4212, the symmetrical closed pieces 2142 in the vent pipe 4214 will be expanded under the pressure. The two closed pieces 2142 are originally connected to the inner side of the tube body 2141 through the support bar 2143. The middle part of the support bar 2143 is provided with a step edge that is concave toward the flared structure. When the closed pieces 2142 are expanded, they will move along the inner wall of the tube body 2141 and make the step edge in the middle part of the support bar 2143 concave inward, thereby forming a larger airflow channel.

[0054] This structural change allows the airflow to continue to flow through the vent pipe 4214 and the other unblocked air hole 1 when it is unable to pass through the blocked air hole 1. In this way, even if one air hole 1 is blocked, the airflow in the channel 1 4212 can still remain unobstructed, thereby ensuring that the extraction function of the clamping device 2 42 for the nylon filaments is not affected. In general, the design of the vent pipe 4214 cleverly solves the problem of airflow obstruction that may be caused by the blockage of air hole 1 through its unique flared structure and expandable closing piece 2142. This design not only improves the reliability and stability of the wire cutting device, but also ensures the smooth movement of the nylon filaments during the wire cutting process, thereby improving the wire cutting efficiency and product quality.

[0055] The clamping device 41 includes a symmetrically arranged clamping plate 411, and the ends of both sides of the clamping plate 411 located on the upper side are respectively provided with an adjustable telescopic rod 2, and the output shaft of the adjustable telescopic rod 2 extends downward to be connected to the clamping plate 411 located on the lower side, so as to drive the output shaft of the adjustable telescopic rod 2 to extend and retract, and adjust the clamping plate 411 located on the lower side to move, and the nylon filament is clamped by adjusting the distance between the two clamping plates 411;

[0056] The first and second adjustable telescopic rods both include a telescopic cylinder 100, which is fixed by a fixing frame 110. The telescopic cylinder 100 includes a cylinder body 101, a threaded rod 102, and a nut 103. The cylinder body 101 has an air cavity 1011, and the air cavity 1011 is connected to an external air compressor to produce positive and negative pressure. The threaded rod 102 is inserted into the air cavity 1011, and a piston connection is formed through a rubber air-sealing block 1021 at its end. The threaded rod 102 is provided with a nut 103 on the surface of the outer side of the air cavity 1011, and the nut 103 is threadedly connected to the threaded rod 102, so that the distance between the nut 103 and the cylinder body 101 can be adjusted by rotating the nut 103, and the contraction distance of the threaded rod 102 can be limited.

[0057] By adjusting the distance between the nut 103 and the cylinder body 101, the retraction distance of the threaded rod 102 can be accurately controlled. This precise adjustment capability enables the clamping device to provide just the right clamping force according to the diameter, material and wire cutting process requirements of the nylon filaments. Too tight clamping may cause damage to the nylon filaments, while too loose clamping may cause inaccurate wire cutting or movement of the nylon filaments during the wire cutting process. Therefore, precise clamping control is crucial to ensuring the quality and efficiency of wire cutting. In actual applications, the specifications of nylon filaments may vary depending on production batches, uses or customer needs. By adjusting the retraction distance of the threaded rod 102, the clamping device can quickly adapt to nylon filaments of different diameters without replacing clamping components or making complex adjustments. This flexibility improves the versatility and adaptability of the wire cutting device and reduces production costs.

[0058] Embodiment 2: In this embodiment, a working method of a slitting device for producing circulating nylon filaments is proposed, which is applied to the slitting device for producing circulating nylon filaments. In the slitting operation, the nylon filaments to be cut are formed by the rotating cutter 3 in sequence, passed through the slitting device body 4, and finally wound on the winding roller 5. The nylon filaments are clamped by the clamping device 1 41 and the clamping device 2 42, and the nylon filaments are cut into segments by the lifting cutter 43;

[0059] When the nylon filaments are cut by the lifting cutter 43, the nylon filaments on the left and right sides of the lifting cutter 43 need to be clamped by the clamping plate 1 411 and the clamping plate 2 421 respectively, and before the winding roller 5 rewinds the nylon filaments, the air compressor connected to the connecting pipe 1 4213 is used to create negative pressure to extract air, and the adjustment devices at both ends of the clamping plate 2 421 are used to drive the clamping plate 2 421 close to the clamping device 1 41 to extract and absorb the cut nylon filaments, and the air compressor connected to the connecting pipe 2 4211 is used to create positive pressure to blow out the air, so that the nylon filaments sucked between the two clamping plates 2 421 are blown toward the winding roller 5;

[0060] Among them, the two air compressors connected to the connecting pipe 1 4213 and the connecting pipe 2 4211 operate at intervals.

[0061] Through intermittent operation, the two air compressors can be responsible for different stages of the slitting process respectively. One air compressor creates negative pressure immediately after slitting through the connecting pipe 4213 to extract and absorb the cut nylon filaments, ensuring that the nylon filaments after slitting will not scatter or deviate from the predetermined path due to inertia or external force. This step is essential for maintaining the continuity and accuracy of the slitting operation. While the negative pressure is being extracted, the other air compressor is in standby mode through the connecting pipe 4211. Once the negative pressure extraction is completed, it starts immediately and creates positive pressure to blow the nylon filaments sucked between the two clamping plates 421 toward the winding roller 5. This intermittent operation method avoids the confusion or damage that may occur to the nylon filaments in the transition stage between slitting and winding, and effectively reduces the waste of raw materials.

[0062] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A slitting device for circulating nylon filament production, characterized in that: The slitting device is provided with a material bin (1), a waste material reel (2), a rotary cutter (3), a slitting device body (4), and a reel (5) in sequence. Nylon raw material is wound in the material bin (1). The nylon raw material passes through the waste material reel (2), the slitting device body (4), and the slitting device body (4) in sequence and is then wound on the reel (5). The rotary cutter (3) is driven to swing by a motor (31) and cuts the nylon raw material into nylon filaments when it contacts the nylon raw material. The wire cutting device body (4) is provided with a clamping device 1 (41), a clamping device 2 (42), and a lifting cutter (43). The lifting cutter (43) is arranged between the clamping device 1 (41) and the clamping device 2 (42). The lifting cutter (43) is driven to rise and fall by electric push rods (431) at the ends of both sides. The clamping device 2 (42) is installed in the wire cutting device body (4) by adjusting devices arranged at the ends of both sides thereof, so that the distance between the clamping device 2 (42) and the clamping device 1 (41) can be adjusted by the two adjusting devices. The clamping device 2 (42) comprises a clamping plate 2 (421) symmetrically arranged in an upper and lower manner and an adjusting device arranged at both ends of each clamping plate 2 (421), and both adjusting devices comprise a screw slider (422), a guide rail (423) and a motor 2 (424), wherein the screw slider (422) is connected to the end of the clamping plate 2 (421) and is slidably arranged in the guide rail (423), the motor 2 (424) is arranged on the outside of the guide rail (423), and the screw (4241) arranged on the output shaft of the motor 2 (424) extends into the guide rail (423) and passes through the screw slider (422) to form a threaded connection with the screw slider (422), so that when the output shaft of the driving motor 2 (424) is rotated, the distance between the clamping plate 2 (421) and the clamping device 1 (41) can be adjusted by pushing the screw slider (422); Adjustable telescopic rods are respectively provided at the ends of both sides of the clamping plate 2 (421) located on the upper side, and the output shafts of the two adjustable telescopic rods are extended downward to be connected to the clamping plate 2 (421) located on the lower side, so as to drive the output shaft of the adjustable telescopic rod to extend and retract, adjust the movement of the clamping plate 2 (421) located on the lower side, and clamp the nylon filament by adjusting the distance between the two clamping plates 2 (421); Adjacent surfaces of the two clamping plates (421) are respectively provided with a channel (4212) and a channel (4215). The channel (4212) is connected to an external air compressor through a connecting pipe (4213) to extract air, and the channel (4215) is connected to an external air compressor through a connecting pipe (4211) to blow out air. The lower end of the channel (4212) is provided with two inclined air holes (4212), and the air holes (4212) are inclined toward the clamping device (41). The upper end of the channel (4215) is provided with two inclined air holes (4215), and the air holes (4215) are inclined toward the side away from the clamping device (41). The port of the air hole 1 is arranged closer to the clamping device 1 (41) than the port of the air hole 2; The channel 1 (4212) and the channel 2 (4215) are both C-shaped structures, and an air release pipe (4214) is provided between the air holes 1 at both ends of the channel 1 (4212).

2. A slitting device for producing circulating nylon filaments according to claim 1, characterized in that: The vent pipe (4214) comprises a pipe body (2141) and a closing piece (2142) symmetrically arranged in the pipe body (2141), wherein the two symmetrically arranged closing pieces (2142) form a flared structure, wherein the end of the flared structure with a larger diameter is arranged toward the air hole one of the two air holes far away from the clamping device one (41); The upper and lower adjacent closing pieces (2142) are abutted against each other, and the ends of the two closing pieces (2142) on one side close to the clamping device (41) are connected to the inner side of the tube body (2141) through a support bar (2143), and a step edge recessed toward the flared structure is provided in the middle of the support bar (2143). When the two closing pieces (2142) are unfolded, the connection ends of the closing pieces (2142) and the tube body (2141) are connected, and the step edge in the middle of the support bar (2143) is recessed inward.

3. A slitting device for producing circulating nylon filaments according to claim 2, characterized in that: The clamping device 1 (41) comprises a symmetrically arranged clamping plate 1 (411), and two adjusting telescopic rods are respectively arranged at the two end ends of the clamping plate 1 (411) located on the upper side, and the output shaft of the adjusting telescopic rod 2 extends downward to be connected to the clamping plate 1 (411) located on the lower side, so as to drive the output shaft of the adjusting telescopic rod 2 to extend and retract, and adjust the clamping plate 1 (411) located on the lower side to move, and the nylon filament is clamped by adjusting the distance between the two clamping plates 1 (411); The first and second adjustable telescopic rods both include a telescopic cylinder (100), the telescopic cylinder (100) being fixed by a fixing frame (110), the telescopic cylinder (100) including a cylinder body (101), a threaded rod (102), and a nut (103), the cylinder body (101) having an air cavity (1011), the air cavity (1011) being connected to an external air compressor to produce positive and negative pressure, the threaded rod (102) being inserted into the air cavity (1011), and forming a piston connection through a rubber air-sealing block (1021) at the end thereof, the surface of the threaded rod (102) outside the air cavity (1011) being sleeved with a nut (103), the nut (103) and the threaded rod (102) forming a threaded connection, so that the distance between the nut (103) and the cylinder body (101) can be adjusted by rotating the nut (103), and the contraction distance of the threaded rod (102) can be limited.

4. A working method of a circulating nylon filament production cutting device, applied to the circulating nylon filament production cutting device according to claim 2 or 3, characterized in that: In the slitting operation, the nylon filaments to be cut into segments are formed by the rotating cutter (3) in sequence, passed through the slitting device body (4), and finally wound on the winding roller (5). The nylon filaments are clamped by the clamping device 1 (41) and the clamping device 2 (42), and the nylon filaments are cut into segments by the lifting cutter (43); When the nylon filaments are cut by the lifting cutter (43), the nylon filaments on the left and right sides of the lifting cutter (43) need to be clamped by the clamping plate 1 (411) and the clamping plate 2 (421) respectively, and before the nylon filaments are rewound on the winding roller (5), the air compressor connected to the connecting pipe 1 (4213) is used to generate negative pressure to extract air, and the adjustment devices at both ends of the clamping plate 2 (421) are used to drive the clamping plate 2 (421) close to the clamping device 1 (41) to extract and absorb the cut nylon filaments, and the air compressor connected to the connecting pipe 2 (4211) is used to generate positive pressure to blow out the outlet air, so that the nylon filaments sucked between the two clamping plates 2 (421) are blown toward the winding roller (5); Among them, the two air compressors connected to connecting pipe one (4213) and connecting pipe two (4211) operate at intervals.

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