A cutting device and method for processing nylon yarn

Abstract

The application belongs to the technical field of nylon processing, and discloses a shearing device and method for nylon wire processing, which comprises a nylon wire winding mechanism and a workbench, further comprises a support frame arranged on the workbench, a shearing roller rotatably connected to the support frame through bearings and driven to rotate by a belt pulley transmission mechanism, two groups of symmetrical clamping assemblies composed of first clamping plates and rubber pads are arranged on the shearing roller, the clamping assemblies are used for clamping nylon wires, and a cutter assembly capable of protruding from the surface of the shearing roller only at a vertical radial position is arranged on the inner side of the shearing roller, so as to cut the nylon wire wound around the surface of the shearing roller. The nylon wire is simultaneously wound and cut by the shearing roller during rotation, the shearing roller can keep the continuous winding and tensioning effect of the nylon wire during winding, so that the nylon wire cannot be bent to cause errors. The nylon wire wound thereon can be cut every rotation, and the shearing efficiency is high.

Description

Technical Field

[0001] This invention belongs to the field of nylon processing technology, specifically a shearing device and method for processing nylon filaments. Background Technology

[0002] Nylon is a common consumable material in industry and daily life. Due to its high mechanical strength, heat resistance and high coefficient of friction, it is widely used in various industries.

[0003] Nylon filament is a very common type of nylon product, widely used in textiles and household goods. For example, toothbrush bristles are a common example of nylon filament products. These short nylon filaments require equidistant cutting after pretreatment. The typical cutting method involves stacking the nylon filaments and placing them in a cutting machine, where the blade moves downwards to cut the ends to a fixed length. This method requires maintaining the nylon's tautness and minimizing bending, otherwise, significant errors in the cut length will occur. Maintaining tautness also necessitates real-time adjustments, making the process relatively complex.

[0004] This application proposes a shearing device for nylon filament processing to overcome the above-mentioned defects and improve processing efficiency and speed. Summary of the Invention

[0005] To address the problems mentioned in the background section, the present invention provides a shearing device and method for processing nylon filaments.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a shearing device and method for processing nylon filaments, comprising a nylon filament winding mechanism and a worktable, and further comprising, A support frame is set on the workbench; The shearing roller is rotatably connected to the support frame via bearings, and the shearing roller is driven to rotate by a belt pulley transmission mechanism; The shearing roller includes two sets of symmetrically arranged clamping assemblies consisting of a first clamping plate and a second clamping plate. The clamping assemblies are used to clamp nylon filaments. The inner side of the shearing roller is provided with a cutting assembly that can extend out of the surface of the shearing roller only in the vertical diameter direction to cut the nylon filaments wrapped around the circumference of the shearing roller. An air knife, positioned directly above the shearing roller, is used to extract the cut nylon filaments. A collection box and a negative pressure fan are both set on the workbench. The collection box is connected to the air knife to collect nylon filaments, and the collection box is connected to the air inlet pipe of the negative pressure fan to create negative pressure on the air knife.

[0007] Preferably, the outer circumferential surface of the shearing roller is provided with two sets of symmetrically positioned dividing grooves at equal intervals, and the clamping assembly is disposed inside the dividing grooves; When the clamping assembly is rotated to its lowest position, it is always located on the side closer to the nylon filament winding mechanism. The first and second clamping plates in the same clamping assembly are both connected by the same translation rod, and the translation rod is fixed to the first clamping plate to drive the first and second clamping plates to fit together and clamp the nylon filaments.

[0008] Preferably, the two ends of the translation rod are respectively connected to a first moving wheel located outside the shearing roller and an elastic reset assembly; A second positioning ring coaxial with the shearing roller is fixed to the support frame. When the first moving wheel rotates with the shearing roller, it presses against the end face of the second positioning ring and rolls, and controls the clamping or loosening of the first clamping plate and the second clamping plate according to the undulation of the second positioning ring.

[0009] Preferably, the end face of the second positioning ring includes a support area and a receiving area, wherein the height of the receiving area is shallower than the height of the support area, and the receiving area is an area with an arc of 80°. The storage area is located in the lower half of the second positioning ring and close to the direction of the nylon filament winding mechanism.

[0010] Preferably, the elastic reset assembly includes a spring seat fixedly connected to the translation rod, and a spring fixedly connected to the support frame. The spring seat and the support frame are elastically connected by the spring to support the retraction and reset of the translation rod.

[0011] Preferably, the opposing surfaces of the first clamping plate and the second clamping plate are provided with rubber pads, and the opposing surfaces of the two rubber pads are both wavy. Furthermore, when the first clamping plate and the second clamping plate are attached together, the rubber pads on both plates deform and engage with each other.

[0012] Preferably, the cutter assembly includes a main beam disposed inside the shearing roller and capable of linearly moving radially along the shearing roller. The blade, fixed to the main beam, moves radially outward along the main beam to enter the cutting groove for cutting nylon filaments. A tension spring, connected to the end of the main beam, is used to apply a radial inward tension to the shear roller, causing it to return to its original position. The second moving wheel is located outside the shearing roller and is fixedly connected to the main beam; When the shearing roller rotates, it drives the second moving wheel to rotate. The undulations on the movement trajectory of the second moving wheel are used to drive the blade into the dividing groove to cut the nylon filament.

[0013] Preferably, a first positioning ring coaxial with the shearing roller is installed on the support frame, and the movement trajectory of the second moving wheel is the outer periphery of the first positioning ring. The outer periphery of the first positioning ring has two symmetrical protrusions at the upper and lower edges in the vertical direction.

[0014] Preferably, the shearing roller has a main shaft coaxial with it inside, and the main shaft is connected to a pulley mechanism for driving the shearing roller. The two ends of the tension spring are hooked onto the lifting lugs on the surface of the main beam and the main shaft, respectively.

[0015] A shearing method for processing nylon filaments, S1. Multiple rolls of nylon filaments are simultaneously unwound by a nylon filament winding mechanism and wound onto a shearing roller. First, the nylon filaments are clamped by a clamping mechanism on the shearing roller. S2. Drive the shearing roller to rotate, and the nylon filament is continuously wound and spliced ​​on the shearing roller. The cutting assembly set on it cuts the nylon filament to a fixed length simultaneously when the shearing roller is wound and spliced, and is continuously clamped by the clamping assembly. S3. The cut nylon filaments are extracted by an air knife and eventually transported to a collection box for storage.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The above solution utilizes a shearing roller to simultaneously perform winding and cutting of nylon filaments during rotation. The shearing roller maintains continuous tension on the nylon filaments during winding, preventing bending and resulting errors. Each rotation cuts the wound nylon filaments once, resulting in high shearing efficiency and speed. An air knife is used to quickly collect the cut nylon filaments, preventing them from accumulating at the workstation and affecting subsequent processing, thus ensuring high collection efficiency. When the clamping assembly is rotated to its top position, it is located to the right of the cutter; when rotated to its bottom position, it is located to the left of the cutter assembly. When the counter-clockwise rotation method is used as shown in the diagram, the nylon filament at the bottom is cut and disengaged from the bottom clamping component. However, the top clamping component still holds the nylon filament. As it drags the nylon filament to the collection area, the lack of pressure from the top support area causes the translation rod to reset due to the elastic reset component. The clamping component then disengages from holding the nylon filament, and the air knife above sucks the nylon filament away for unified collection. Simultaneously with the cutting component cutting the nylon filament, the bottom clamping component has already held the rear end of the nylon filament, allowing it to continue being dragged and wrapped around the surface of the shearing roller. The top clamping component, upon rotating to the bottom, replaces the function of the bottom clamping component, thus achieving continuous and rapid cutting and clamping operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram showing the layout of the first positioning ring and the second positioning ring of the present invention; Figure 4This is a schematic diagram of the structure of the second positioning ring of the present invention; Figure 5 This is a schematic diagram of the shearing roller structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of part A; Figure 7 This is a schematic diagram of the clamping assembly of the present invention clamping nylon filaments; Figure 8 For the present invention Figure 7 Enlarged diagram of part B; Figure 9 For the present invention Figure 7 Enlarged schematic diagram of part C; Figure 10 This is a cross-sectional schematic diagram of the shearing roller of the present invention; Figure 11 For the present invention Figure 10 Enlarged schematic diagram of part D. In the diagram: 100, Nylon filament winding mechanism; 200, Worktable; 300, Support frame; 301, First positioning ring; 302, Second positioning ring; 3021, Top support area; 3022, Storage area; 400, Air knife; 500, Collection box; 600, Negative pressure fan; 700, Shearing roller; 701, Dividing groove; 702, First clamping plate; 703, Second clamping plate; 704, Rubber pad; 705, Translation rod; 706, First moving wheel; 707, Spring seat; 708, Spring; 709, Cutting blade assembly; 7091, Main beam; 7092, Blade; 7093, Tension spring; 7094, Second moving wheel; 800, Main shaft. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 11 As shown, the present invention provides a shearing device and method for processing nylon filaments, including a nylon filament winding mechanism 100 and a worktable 200, and further comprising, A support frame 300 is mounted on a workbench 200; The shearing roller 700 is rotatably connected to the support frame 300 via bearings, and the shearing roller 700 is driven to rotate by a belt pulley transmission mechanism. The shearing roller 700 includes two sets of symmetrically arranged clamping assemblies consisting of a first clamping plate 702 and a second clamping plate 703. The clamping assemblies are used to clamp nylon filaments. The inner side of the shearing roller 700 is provided with a cutter assembly 709 that can extend out of the surface of the shearing roller 700 only in the vertical diameter direction to cut the nylon filaments wrapped around the circumference of the shearing roller 700. Air knife 400, which is positioned directly above shearing roller 700, is used to extract the cut nylon filaments; The collection box 500 and the negative pressure fan 600 are both set on the workbench 200. The collection box 500 is connected to the air knife 400 to collect nylon filaments. The collection box 500 is connected to the air inlet pipe of the negative pressure fan 600 to form negative pressure on the air knife 400.

[0020] During its rotation, the shearing roller 700 simultaneously winds and cuts the nylon filaments. The cut nylon filaments are then sucked away by the clamping assembly directly below the air knife 400 and stored in the collection box 500. The negative pressure fan 600 provides negative pressure to the collection box 500, thereby creating negative pressure between the air knife 400 and the opening of the shearing roller 700, which in turn draws the nylon filaments away.

[0021] like Figure 5 As shown, the outer circumferential surface of the shearing roller 700 is provided with two sets of symmetrically positioned dividing grooves 701 at equal intervals, and the clamping assembly is disposed inside the dividing grooves 701. When the clamping assembly is rotated to its lowest position, it is always located on the side closest to the nylon filament winding mechanism 100. The first clamping plate 702 and the second clamping plate 703 in the same clamping assembly are both passed through by the same translation rod 705, and the translation rod 705 is fixed to the first clamping plate 702 to drive the first clamping plate 702 and the second clamping plate 703 to fit together and clamp the nylon thread.

[0022] During rotation, the shearing roller 700 allows the nylon filaments to wrap around the inside of the dividing groove 701, which provides a certain degree of restraint and is suitable for mounting components such as clamping assemblies. This clamping assembly is driven and controlled by a translation rod 705, which pushes one of its movable components, the first clamping plate 702, closer to the second clamping plate 703, ultimately squeezing and adhering it to stably hold the nylon filaments passing between them.

[0023] like Figure 3 and 4 As shown, the two ends of the translation rod 705 are respectively connected to the first moving wheel 706 located outside the shearing roller 700 and the elastic reset assembly; A second positioning ring 302 coaxial with the shearing roller 700 is fixed on the support frame 300. When the first moving wheel 706 rotates with the shearing roller 700, it presses against the end face of the second positioning ring 302 and rolls, and controls the clamping or loosening of the first clamping plate 702 and the second clamping plate 703 by the undulation of the second positioning ring 302.

[0024] When the first moving wheel 706 passes the protrusion on the second positioning ring 302, it will squeeze the translation rod 705 and move it towards the elastic component. As a result, the first clamping plate 702 will also move towards the second clamping plate 703 on the translation rod 705 until it fits with it to clamp the nylon thread. When it passes the recess on the second positioning ring 302, due to the action of the elastic reset component, the translation rod 705 is elastically retracted, causing the first clamping plate 702 on it to retract as well, breaking away from the squeezing and fitting state between the first and second clamping plates 703, releasing the clamping effect on the nylon thread, so that it can be sucked away by negative pressure.

[0025] like Figure 3 and 4 As shown, the end face of the second positioning ring 302 includes a top support area 3021 and a storage area 3022. The height of the storage area 3022 is shallower than the height of the top support area 3021, and the storage area 3022 is an area with an arc of 80°. The storage area 3022 is located in the lower half of the circumference of the second positioning ring 302 and is close to the direction of the nylon filament winding mechanism 100.

[0026] When the clamping assembly rotates to its top, it is located to the right of the cutter; when it rotates to its bottom, it is located to the left of the cutter assembly 709. When rotating counter-clockwise, the nylon filament at the bottom is cut and disengaged from the bottom clamping assembly. However, the top clamping assembly still holds the nylon filament. As it drags the nylon filament to the collection area 3022, the lack of pressure from the top support area 3021 causes the translation rod 705 to reset due to the elastic reset assembly. The clamping assembly then disengages from holding the nylon filament, and the air knife 400 above sucks the nylon filament away for unified collection. While the cutter assembly 709 cuts the nylon filament, the bottom clamping assembly has already clamped the rear end of the nylon filament, allowing it to continue wrapping around the surface of the shearing roller 700. The top clamping assembly, when rotating to the bottom, replaces the function of the bottom clamping assembly, thus achieving continuous cutting and clamping operation.

[0027] like Figure 7 and 9As shown, the elastic reset assembly includes a spring seat 707 fixedly connected to the translation rod 705, and a spring 708 fixedly connected to the support frame 300. The spring seat 707 and the support frame 300 are elastically connected through the spring 708 to support the retraction and reset of the translation rod 705.

[0028] The other end of the translation rod 705 is connected to a first moving wheel 706. The first moving wheel 706 and the second positioning ring 302 cooperate to drive the entire translation rod 705 to move horizontally along the axial direction of the shearing roller 700. When the first moving wheel 706 is located on the top support area 3021 of the second positioning ring 302, the translation rod 705 drives the first clamping plate 702 and the second clamping plate 703 to fit together while compressing itself in the direction of the spring 708. When the first moving wheel 706 rolls into the storage area 3022, the spring 708 pushes the translation rod 705 to move as a whole in the direction of the second positioning ring 302, so that the first clamping plate 702 and the second clamping plate 703 controlled by the translation rod 705 separate and disengage from the clamping of the nylon filament.

[0029] like Figure 7 and 8 As shown, rubber pads 704 are provided on the facing surfaces of the first clamping plate 702 and the second clamping plate 703, and the facing surfaces of the two rubber pads 704 are both wavy. Furthermore, when the first clamping plate 702 and the second clamping plate 703 are attached, the rubber pads 704 on both plates deform and engage with each other.

[0030] The rubber pad 704 is soft and elastic, while the nylon filaments are relatively thin. On the one hand, this is to prevent harder materials from damaging the nylon filaments. Therefore, using the rubber pad 704 can effectively avoid this defect. However, the softness may cause inconsistency in holding the thinner nylon filaments. Therefore, this application adopts a wavy, staggered design on the inner side of the rubber pad 704. Through its own deformation after compression, it forms a multi-layered labyrinth clamping effect, which can both clamp the nylon filaments tightly and reduce damage to the nylon filaments.

[0031] like Figure 3 , 10 As shown in Figure 11, the cutter assembly 709 includes The main beam 7091 is disposed inside the shearing roller 700 and can move linearly along the radial direction of the shearing roller 700. The blade 7092 is fixed to the main beam 7091 and can move radially outward along the main beam 7091 to enter the dividing groove 701 to cut nylon filaments. A tension spring 7093, connected to the end of the main beam 7091, is used to apply a radially inward tension to the shear roller 700 to reset it. The second moving wheel 7094 is located outside the shearing roller 700 and is fixedly connected to the main beam 7091; When the shearing roller 700 rotates, it drives the second moving wheel 7094 to rotate. The undulations on the movement trajectory of the second moving wheel 7094 are used to drive the blade 7092 into the dividing groove 701 to cut the nylon filament.

[0032] The main beam 7091 is used to install the blades 7092. It has a preset blade mounting pin hole, which drives a set of blades 7092 to enter the first positioning ring 301 simultaneously to cut the nylon filaments. The tension spring 7093 is used to reset the blades 7092 that have entered the first positioning ring 301, so that they retract into the interior of the shearing roller 700 to prevent interference with the shearing roller 700's operation of winding the next set of nylon filaments.

[0033] like Figure 3 As shown, a first positioning ring 301 coaxial with the shearing roller 700 is installed on the support frame 300. The movement trajectory of the second moving wheel 7094 is the outer periphery of the first positioning ring 301. The outer periphery of the first positioning ring 301 has two symmetrical protrusions at the upper and lower edges in the vertical direction.

[0034] When the shearing roller 700 rotates, it drives all the components mounted on it to rotate synchronously, including the second moving wheel 7094. The blade 7092, located inside the shearing roller 700, enters the dividing groove 701 to cut the nylon filament. This is achieved by the second moving wheel 7094 moving along the undulations of the first positioning ring 301. The two protrusions located at the highest and lowest points on the circumference of the first positioning ring 301, respectively, along the vertical diameter, control the movement of the blade 7092 into the dividing groove 701. The shearing roller 700 also has two sets of symmetrical cutting blade assemblies 709. That is, when the two sets of second moving wheels 7094 rotate simultaneously to the protrusions of the first positioning ring 301, the two sets of blades 7092, located above and below each other, will simultaneously cut the nylon filament. This process overcomes the tension of the tension spring 7093. When the second moving wheel 7094 disengages from the protruding part, the tension of the tension spring 7093 will cause the other components on the cutter assembly 709 to return to their initial positions, that is, the blade 7092 will exit the first positioning ring 301.

[0035] like Figure 1 As shown, the shearing roller 700 has a coaxial main shaft 800 inside it. The main shaft 800 is connected to a belt pulley mechanism to control the drive of the shearing roller 700. The two ends of the tension spring 7093 are hooked onto the lifting lugs on the surface of the main beam 7091 and the main shaft 800, respectively.

[0036] The tension spring 7093 is used to pull the main beam 7091 downward. The main shaft 800 drives the shearing roller 700 to rotate synchronously. Therefore, the two ends of the tension spring 7093 can always be kept in a straight line during the driving process of the shearing roller 700, so the main beam 7091 can be stably controlled.

[0037] A shearing method for processing nylon filaments, S1. Multiple rolls of nylon filaments are simultaneously unwound by a nylon filament winding mechanism 100 and wound onto a shearing roller 700. First, the nylon filaments are clamped by a clamping mechanism on the shearing roller 700. S2. Drive the shearing roller 700 to rotate. The nylon filament is continuously wound and spliced ​​on the shearing roller 700. The cutter assembly 709 on it cuts the nylon filament to a fixed length simultaneously when the shearing roller 700 is winding and splicing, and continuously clamps it through the clamping assembly. S3. The cut nylon filaments are extracted by the air knife 400 and finally transported to the collection box 500 for storage and collection.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shearing device for processing nylon filaments, comprising a nylon filament winding mechanism (100) and a worktable (200), characterized in that: It also includes, A support frame (300) is mounted on a workbench (200); The shearing roller (700) is rotatably connected to the support frame (300) via bearings, and the shearing roller (700) is driven to rotate by a belt pulley transmission mechanism; The shearing roller (700) includes two sets of symmetrically arranged clamping assemblies consisting of a first clamping plate (702) and a second clamping plate (703). The clamping assemblies are used to clamp nylon filaments. The inner side of the shearing roller (700) is provided with a cutter assembly (709) that can extend out of the surface of the shearing roller (700) only in the vertical diameter direction to cut the nylon filaments wrapped around the circumference of the shearing roller (700). An air knife (400) is positioned directly above the shearing roller (700) to extract the cut nylon filaments; A collection box (500) and a negative pressure fan (600) are set on a workbench (200). The collection box (500) is connected to the air knife (400) for collecting nylon filaments. The collection box (500) is connected to the air inlet pipe of the negative pressure fan (600) to form a negative pressure on the air knife (400). The outer circumferential surface of the shearing roller (700) is provided with two sets of symmetrically positioned dividing grooves (701) at equal intervals, and the clamping assembly is disposed on the inner side of the dividing grooves (701). When the clamping assembly is rotated to its lowest position, it is always located on the side closer to the nylon filament winding mechanism (100); The first clamping plate (702) and the second clamping plate (703) in the same clamping assembly are both passed through by the same translation rod (705), and the translation rod (705) is fixed to the first clamping plate (702) to drive the first clamping plate (702) and the second clamping plate (703) to fit together and clamp the nylon thread. The cutter assembly (709) includes a main beam (7091) disposed inside the shearing roller (700) and capable of linearly moving radially along the shearing roller (700). The blade (7092), which is fixed on the main beam (7091) and can move radially outward along the main beam (7091) to enter the dividing groove (701) for cutting nylon filaments, A tension spring (7093), connected to the end of the main beam (7091), is used to apply a radially inward tension along the shear roller (700) to reset it. The second moving wheel (7094) is located outside the shearing roller (700) and is fixedly connected to the main beam (7091); When the shearing roller (700) rotates, it drives the second moving wheel (7094) to rotate. The undulations on the movement trajectory of the second moving wheel (7094) are used to drive the blade (7092) into the dividing groove (701) to cut the nylon filament. The support frame (300) is equipped with a first positioning ring (301) coaxial with the shearing roller (700). The movement trajectory of the second moving wheel (7094) is the outer periphery of the first positioning ring (301). The outer periphery of the first positioning ring (301) has two symmetrical protrusions at the upper and lower edges in the vertical direction.

2. The shearing device for nylon filament processing according to claim 1, characterized in that: The translation rod (705) is connected at both ends to a first moving wheel (706) located outside the shearing roller (700) and an elastic reset assembly, respectively. A second positioning ring (302) coaxial with the shearing roller (700) is fixed on the support frame (300). When the first moving wheel (706) rotates with the shearing roller (700), it presses against the end face of the second positioning ring (302) and rolls, and controls the clamping or loosening of the first clamping plate (702) and the second clamping plate (703) with the undulation of the second positioning ring (302).

3. The shearing device for nylon filament processing according to claim 2, characterized in that: The end face of the second positioning ring (302) includes a top support area (3021) and a storage area (3022). The height of the storage area (3022) is shallower than the height of the top support area (3021). The storage area (3022) is an area with an arc of 80°. The storage area (3022) is located in the lower half of the periphery of the second positioning ring (302) and close to the direction of the nylon filament winding mechanism (100).

4. The shearing device for processing nylon yarn according to claim 3, characterized in that: The elastic reset assembly includes a spring seat (707) fixedly connected to the translation rod (705), and a spring (708) fixedly connected to the support frame (300). The spring seat (707) and the support frame (300) are elastically connected by the spring (708) to support the retraction and reset of the translation rod (705).

5. The shearing device for processing nylon filaments according to claim 1, characterized in that: The first clamping plate (702) and the second clamping plate (703) are provided with rubber pads (704) on their facing surfaces, and the facing surfaces of the two rubber pads (704) are both wavy. When the first clamping plate (702) and the second clamping plate (703) are attached, the rubber pads (704) on both plates deform and engage with each other.

6. The shearing device for processing nylon yarn according to claim 1, characterized in that: The shearing roller (700) is equipped with a main shaft (800) coaxial with it. The main shaft (800) is connected to a pulley mechanism to control the drive of the shearing roller (700). The two ends of the tension spring (7093) are hooked onto the lugs on the surface of the main beam (7091) and the main shaft (800), respectively.

7. A shearing method for processing nylon filaments, employing the shearing device for processing nylon filaments as described in claim 1, characterized in that: S1. Multiple rolls of nylon filament are simultaneously unwound by the nylon filament winding mechanism (100) and wound onto the shearing roller (700). First, the nylon filament is clamped by the clamping mechanism on the shearing roller (700). S2. Drive the shearing roller (700) to rotate, and the nylon filament is continuously wound on the shearing roller (700). The cutter assembly (709) set on it cuts the nylon filament to a fixed length simultaneously when the shearing roller (700) is wound, and is continuously clamped by the clamping assembly. S3. The cut nylon filaments are extracted by an air knife (400) and finally transported to a collection box (500) for storage and collection.

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