Automatic fiber cutting machine

Abstract

The present invention discloses an automatic fiber filament cutting machine, comprising a frame and a feeding device, a manipulator and a reciprocating mechanism arranged on the frame; the feeding device has two, which are arranged at the front and rear ends of the frame respectively, and the fiber filament is transported from the feeding device at the rear end to the feeding device at the front end, and the speed at which the two feeding devices transport the fiber filament matches the spinning speed of the fiber spinning machine; the manipulator has two, which are respectively slidably arranged on two mutually parallel guide rails of the frame and are located between the two feeding devices, and a reciprocating mechanism is connected above each manipulator, and the two reciprocating mechanisms are arranged parallel to each other, and the two manipulators perform alternating reciprocating motions driven by the corresponding reciprocating mechanisms, thereby realizing the grasping and cutting of the fiber filament. The present invention can customize the length of the fiber filament to be cut according to the needs without stopping the spinning machine, and realize the automation of fiber filament cutting and collection.

Description

Technical Field

[0001] The invention relates to the technical field of online automatic cutting of fiber filaments by a spinning machine, in particular to an automatic fiber filament cutting machine. Background Art

[0002] Currently, in companies producing hollow fiber membranes or chemical fibers (hereinafter collectively referred to as fibers), the winding of hollow fiber membranes or chemical fibers is generally performed using a set of two winding wheels. The rotation of the winding wheels winds the fiber filaments onto the surface of the wheels. When one winding wheel has wound a certain amount of fiber, a worker manually winds the spun fiber filaments onto another empty wheel for further winding. The worker then uses a blade to cut and remove the fiber filaments along the generatrix of the wheel, thus completing a fixed-length bundle of fiber filaments. Since the fiber filaments are wound onto the surface of the winding wheel by the rotation of the winding wheel, the length of each turn of fiber filaments is the circumference of the winding wheel. The length of the cut and removed fiber filaments is fixed, and the diameter of the winding wheel determines the length of each fiber bundle.

[0003] Therefore, the traditional winding method has the following disadvantages: 1. The length of the fiber filament is fixed and cannot be flexibly and freely set; 2. When fiber filaments of different lengths are required, the corresponding winding wheel must be replaced, which is time-consuming and labor-intensive, and is not conducive to improving production efficiency; 3. For the operating workers, each cutting and wheel changing operation greatly increases the chance of contact with residual membrane liquid, which is not conducive to the workers' physical and mental health; 4. The winding method uses manual cutting, which will inevitably lose some fiber filaments during the cutting process, resulting in waste. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide an automatic fiber cutting machine that can customize the length of the fiber to be cut according to needs without stopping the spinning machine, automatically collect and automatically send out the fiber bundles that have reached the set number, thereby realizing the automation of fiber cutting and collection.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the present invention is as follows: an automatic fiber yarn cutting machine, comprising a frame and a feeding device, a manipulator and a reciprocating motion mechanism arranged on the frame; there are two feeding devices, which are respectively arranged at the front and rear ends of the frame, and the fiber yarn is transported from the feeding device at the rear end to the feeding device at the front end, and the speed at which the two feeding devices transport the fiber yarn matches the spinning speed of the fiber spinning machine; there are two manipulators, which are respectively slidably arranged on two mutually parallel guide rails of the frame and are located between the two feeding devices, and a reciprocating motion mechanism is connected above each manipulator, and the two reciprocating motion mechanisms are arranged parallel to each other, and the movement speed of the reciprocating motion mechanism pulling the manipulator matches the wire feeding speed of the feeding device, and the two manipulators are in phase The robot moves to the set grabbing position and grabs the fiber yarn delivered by the feeding device at the rear end of the frame. After the robot continues to move forward to the set distance, the other robot grabs the fiber yarn that the feeding device at the rear end continues to deliver from the rear end. When the front robot continues to move to the set position and releases the fiber yarn, the robot at the rear synchronously cuts the fiber yarn but continues to grab and pull it forward, thereby completing the cutting of a section of fiber yarn. After the rear robot pulls the fiber yarn forward for a set distance, the front robot returns and repeats the action of the rear robot. The two robots cyclically execute the action to complete continuous automatic cutting.

[0006] Furthermore, the manipulator includes a main structure, a lifting slider, a lifting cylinder, a left-right movable slider base, a left-right movable slider, a left-right movable cylinder and a wire cutting device. The main structure is slidably arranged on the frame through guide wheels, and the lifting slider is slidably installed on a lifting guide rail extending vertically downward from the main structure, and is driven by the lifting cylinder to achieve its up and down movement on the lifting guide rail. The left-right movable slider base is installed on the lifting slider and can move up and down on the lifting guide rail together with the lifting slider. The left-right movable slider is slidably installed on the horizontal guide rail of the left-right movable slider base, and is driven by the left-right movable cylinder to achieve its left-right sliding on the horizontal guide rail. The wire cutting device is installed on the left-right movable slider, and the wire cutting devices of the two manipulators are avoided by the mutual cooperation of the lifting cylinder and the left-right movable cylinder.

[0007] Furthermore, the wire clamping and cutting device includes a fixed frame, a front fiber wire guide groove, a rear fiber wire guide groove, a wire holding assembly, a wire cutting assembly and a wire clamping assembly. The fixed frame is installed on the left and right movable sliders, and a front fiber wire guide groove and a rear fiber wire guide groove are formed below it for guiding the fiber wire into the wire holding assembly, the wire cutting assembly and the wire clamping assembly. The wire cutting assembly and the wire clamping assembly are arranged between the front fiber wire guide groove and the rear fiber wire guide groove in sequence, and the wire holding assembly is arranged in front of the front fiber wire guide groove, wherein the wire clamping assembly includes a wire clamping cylinder and a wire clamping claw, the wire clamping cylinder is installed on the fixed frame, and there are two wire clamping claws, which are symmetrically arranged on both sides of the wire clamping cylinder for clamping the fiber wire. The fiber is clamped and fixed, and the wire cutting assembly is arranged in front of the wire clamping assembly, including a wire cutting cylinder, a wire cutting knife seat and a wire cutting knife. The wire cutting cylinder is mounted on a fixed frame, and there are two wire cutting knife seats, which are symmetrically arranged on both sides of the wire cutting cylinder. Each wire cutting knife seat is equipped with a wire cutting knife, and the wire cutting knife seats are driven by the wire cutting cylinder to move towards each other, and then the fiber wire between the two wire cutting knives is cut. The wire holding assembly includes a wire holding claw and a claw cylinder, and the claw cylinder is mounted on a fixed frame. The wire holding claw is connected to the claw cylinder, and its opening is facing downward. The opening and closing state of the claw cylinder is driven by the claw cylinder to adjust the height of the fiber wire to the range of the wire cutting knife of the wire cutting assembly.

[0008] Furthermore, the reciprocating motion mechanism includes a synchronous belt mechanism and a power source. The synchronous belt mechanism is connected to the power source and is arranged on the top of the frame and connected to the corresponding manipulator. The power source drives the synchronous belt mechanism to rotate and synchronously drives the manipulator to reciprocate along one end of the frame to the other end.

[0009] Furthermore, the frame is also provided with a conveying mechanism, which is located below the two manipulators and is used to automatically collect the cut fiber bundles and convey them to the outside, including a conveyor belt and a conveying power source. There are multiple conveyor belts, and the multiple conveyor belts are arranged in a row on the frame. The power shafts of two adjacent conveyor belts are connected by bearings. The conveying power source is connected to the conveyor belt located at the end, and the multiple conveyor belts are driven by the conveying power source to realize linkage conveying.

[0010] Furthermore, a counting disk and a proximity switch are installed at the end of the power shaft of the conveyor belt at the very end. The counting disk is used to calculate the number of fiber bundles cut, and the proximity switch is connected to the conveying power source signal. The conveying power source drives the conveyor belt to transport a set number of fiber bundles, and the conveying distance of the fiber bundles is determined by the signal feedback of the proximity switch.

[0011] Furthermore, the feeding device includes a box body, a driving shaft, a fixed shaft, an adjustable rotating shaft assembly, a feeding power source and a roller. The box body is equipped with a driving shaft and a fixed shaft that are parallel and symmetrical to each other. The gear on the driving shaft is engaged with the gear on the fixed shaft. The adjustable rotating shaft assembly is installed in the box body, and the gear on it is engaged with the gear on the fixed shaft. A roller is installed at its end. The roller is symmetrical and parallel to the roller on the driving shaft. By rotating the adjustable rotating shaft assembly, the spacing between the two rollers can be adjusted to accommodate fiber filaments of different shapes and sizes; the driving shaft is driven to rotate by the feeding power source, and the two rollers are then rotated synchronously toward each other to realize the transportation of fiber filaments between them.

[0012] Furthermore, the adjustable rotating shaft assembly includes a frame, a central rotating shaft and a rotating shaft. The central rotating shaft and the rotating shaft are installed on the frame, and one end of the central rotating shaft passes through the frame and is installed on the box. The central rotating shaft and the rotating shaft are both parallel to the fixed shaft. The gear on the central rotating shaft is engaged with the gear on the fixed shaft, and the gear on the rotating shaft is engaged with the gear on the central rotating shaft. A roller is provided at the end of the rotating shaft, and the distance between the two rollers is adjusted by adjusting the angle of the frame.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0014] The automatic fiber cutting machine of the present invention can customize the length of the cut fiber according to needs, automatically collect and automatically send out the fiber bundles that have reached the set number, realize the automation of fiber cutting and collection, and avoid waste; improve production efficiency, fully automate the process, omit the workers' work of cutting and changing wheels, reduce the workers' chances of contact with membrane liquid, and protect the workers' physical and mental health. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the manipulator of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the wire cutting device of the present invention.

[0018] Figure 4 It is a structural schematic diagram of the wire cutting assembly of the present invention.

[0019] Figure 5 It is a schematic structural diagram of the wire clamping assembly of the present invention.

[0020] Figure 6 It is a structural schematic diagram of the wire holding assembly of the present invention.

[0021] Figure 7It is a structural schematic diagram of the conveying mechanism of the present invention.

[0022] Figure 8 It is a structural schematic diagram of the feeding device of the present invention.

[0023] Figure 9 Schematic diagram of the internal structure of the feeding device of the present invention.

[0024] Figure 10 It is a structural schematic diagram of the adjustable rotating shaft assembly of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to specific embodiments.

[0026] like Figure 1 As shown, the automatic fiber cutting machine described in this embodiment includes a frame 1 and a feeding device 2, a manipulator 3, a reciprocating motion mechanism 4 and a conveying mechanism 5 arranged on the frame 1; there are two feeding devices 2, which are respectively arranged at the front and rear ends of the frame 1, and the fiber is conveyed from the feeding device 2 at the rear end to the feeding device 2 at the front end, and the speed at which the two feeding devices 2 convey the fiber matches the spinning speed of the fiber spinning machine; there are two manipulators 3, which are slidably arranged on two mutually parallel guide rails of the frame 1 and are located between the two feeding devices 2, and a reciprocating motion mechanism 4 is connected above each manipulator 3, and the two reciprocating motion mechanisms 4 are parallel to each other. The movement speed of the reciprocating motion mechanism 4 pulling the manipulator 3 matches the wire feeding speed of the feeding device 2, and the two manipulators 3 perform alternating reciprocating motions driven by the corresponding reciprocating motion mechanisms 4. Then, the fiber filaments can be grabbed and cut; the conveying mechanism 5 is located below the two manipulators and is used to automatically collect the cut fiber bundles and convey them to the outside; any manipulator 3 moves to the set grabbing position and grabs the fiber filaments conveyed by the feeding device 2 at the rear end of the frame 1. After the manipulator 3 continues to move forward to the set distance, the other manipulator 3 grabs the fiber filaments that the feeding device 2 at the rear end continues to convey from the rear end. When the front manipulator 3 continues to move to the set position and releases the fiber filaments, the manipulator 3 at the rear synchronously cuts the fiber filaments but continues to grab and pull forward, thereby completing the cutting of a section of fiber filaments. After the rear manipulator 3 pulls the fiber filaments forward and conveys the set distance, the front manipulator 3 returns and repeats the action of the rear manipulator 3. The two manipulators 3 cyclically execute the actions to complete continuous automatic cutting.

[0027] like Figures 2 to 6As shown, the manipulator 3 includes a main structure 31, a lifting slider (not shown in the figure), a lifting cylinder (not shown in the figure), a left-right movable slider base (not shown in the figure), a left-right movable slider (not shown in the figure), a left-right movable cylinder 33 and a wire cutting device 32. The main structure 31 is slidably arranged on the frame 1 through a guide wheel 35. The lifting slider is slidably installed on a lifting guide rail 34 extending vertically downward from the main structure 31 and is driven by the lifting cylinder to achieve its up and down movement on the lifting guide rail 34. The left-right movable slider base is installed on the lifting slider and can move up and down on the lifting guide rail 34 together with the lifting slider. The left-right movable slider is slidably installed on the horizontal axis of the left-right movable slider base. The guide rail is driven by the left and right moving cylinder 33 to realize its left and right sliding on the horizontal guide rail. The wire cutting device 32 is installed on the left and right moving slider. The wire cutting devices 32 of the two manipulators 3 avoid each other through the cooperation of the lifting cylinder and the left and right moving cylinder 33; the wire cutting device 32 includes a fixed frame 321, a front fiber guide groove 322, a rear fiber guide groove 323, a wire holding component 324, a wire cutting component 325 and a wire holding component 326. The fixed frame 321 is installed on the left and right moving slider. The front fiber guide groove 322 and the rear fiber guide groove 323 are formed below the fixed frame 321 for guiding the fiber to the wire holding component 324, the wire cutting component 325 and the wire holding component In the assembly 326, the wire cutting assembly 325 and the wire clamping assembly 326 are arranged between the front fiber guide groove 322 and the rear fiber guide groove 323 in sequence, and the wire holding assembly 324 is arranged in front of the front fiber guide groove 322, wherein the wire clamping assembly 326 includes a wire clamping cylinder 3261 and a wire clamping claw 3262, the wire clamping cylinder 3261 is mounted on the fixed frame 321, and there are two wire clamping claws 3262, which are symmetrically arranged on both sides of the wire clamping cylinder 3261 for clamping and fixing the fiber filaments. The wire cutting assembly 325 is arranged in front of the wire clamping assembly 326, and includes a wire cutting cylinder 3251, a wire cutting knife seat 3252 and a wire cutting knife 3253. The wire cutting cylinder 3251 is mounted on the fixed frame 32 1, there are two wire cutting knife seats 3252, which are symmetrically arranged on both sides of the wire cutting cylinder 3251. Each wire cutting knife seat 3252 is equipped with a wire cutting knife 3253. The wire cutting cylinder 3251 drives the wire cutting knife seats 3252 to move towards each other, and then the two wire cutting knives 3253 cut the fiber yarn between them. The wire holding assembly 324 includes a wire holding claw 3242 and a claw holding cylinder 3241. The claw holding cylinder 3241 is installed on the fixed frame 321. The wire holding claw 3242 is connected to the claw holding cylinder 3241, and its opening faces downward. The claw holding claw 3242 is driven to open and close by the claw holding cylinder 3241 to adjust the height of the fiber yarn to within the range of the wire cutting knife 3253 of the wire cutting assembly 325.

[0028] The reciprocating motion mechanism 4 includes a synchronous belt mechanism and a power source. The synchronous belt mechanism is connected to the power source and is arranged on the top of the frame 1. It is connected to the corresponding manipulator 3. The power source drives the synchronous belt mechanism to rotate and synchronously drives the manipulator 3 to reciprocate along one end of the frame 1 to the other end.

[0029] like Figure 7 As shown, the conveying mechanism 5 includes a conveyor belt 51 and a conveying power source 52. There are multiple conveyor belts 51, and the multiple conveyor belts 51 are arranged in a row on the frame 1. The power shafts of two adjacent conveyor belts 51 are connected by bearings. The conveying power source 52 is connected to the conveyor belt 51 located at the end. The multiple conveyor belts 51 are driven by the conveying power source 52 to realize linkage conveying. The end of the power shaft of the conveyor belt 51 located at the end is equipped with a counting disk 53 and a proximity switch 54. The counting disk 53 is used to calculate the number of fiber yarns cut. The proximity switch 54 is connected to the conveying power source 52 signal. The conveyor belt 51 is driven by the conveying power source 52 to transport the set number of fiber bundles, and the conveying distance of the fiber bundles is determined by the signal feedback of the proximity switch 54.

[0030] like Figures 8 to 10 As shown, the feeding device 2 includes a box body 21, a driving shaft 22, a fixed shaft 23, an adjustable rotating shaft assembly, a feeding power source 25 and a roller 26. The driving shaft 22 and the fixed shaft 23 are installed in the box body 21. The gear on the driving shaft 22 is meshed with the gear on the fixed shaft 23. The adjustable rotating shaft assembly is installed in the box body 21, and the gear on it is meshed with the gear on the fixed shaft 23. A roller 26 is installed at its end. The roller 26 is symmetrical and parallel to the roller 26 on the driving shaft. By rotating the adjustable rotating shaft assembly, the distance between the two rollers 26 can be adjusted to adapt to fiber filaments of different shapes and sizes; wherein, the adjustable rotating shaft assembly includes a frame body 241, a center The rotating shaft 242 and the rotating shaft 243 are installed on the frame 241, and one end of the central rotating shaft 242 passes through the frame 241 and is installed on the box body 21. The central rotating shaft 242 and the rotating shaft 243 are parallel to the fixed shaft 23. The gear on the central rotating shaft 242 is engaged with the gear on the fixed shaft 23, and the gear on the rotating shaft 243 is engaged with the gear on the central rotating shaft 242. The end of the rotating shaft 243 is provided with a roller 26, and the distance between the two rollers 26 is adjusted by adjusting the angle of the frame 241; the driving shaft 22 is driven to rotate by the feeding power source 25, so that the two rollers 26 rotate synchronously in opposite directions to realize the transportation of fiber yarns between them.

[0031] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any changes made based on the shape and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic fiber cutting machine, characterized in that: The invention comprises a frame and a feeding device, a manipulator and a reciprocating motion mechanism arranged on the frame; there are two feeding devices, which are respectively arranged at the front and rear ends of the frame, and the fiber yarn is transported from the feeding device at the rear end to the feeding device at the front end, and the speed at which the two feeding devices transport the fiber yarn matches the spinning speed of the fiber spinning machine. The feeding device comprises a box body, a driving shaft, a fixed shaft, an adjustable rotating shaft assembly, a feeding power source and a roller, and a driving shaft and a fixed shaft parallel and symmetrical to each other are installed in the box body, and the gear on the driving shaft is meshed with the gear on the fixed shaft, and the adjustable rotating shaft assembly is installed in the box body, and the gear on it is meshed with the gear on the fixed shaft, and a roller is installed at its end, and the roller is symmetrical and parallel to the roller on the driving shaft, and the spacing between the two rollers can be adjusted by rotating the adjustable rotating shaft assembly, so as to adapt to fiber yarns of different shapes and sizes; the driving shaft is driven to rotate by the feeding power source, and then the two rollers are synchronously rotated in opposite directions to realize the transportation of the fiber yarn between them; there are two manipulators, which are respectively slidably arranged on the two sides of the frame The two manipulators are arranged on parallel guide rails and between two feeding devices. A reciprocating mechanism is connected above each manipulator. The two reciprocating mechanisms are arranged parallel to each other. The movement speed of the reciprocating mechanism pulling the manipulator is matched with the wire feeding speed of the feeding device. The two manipulators perform alternating reciprocating motions driven by the corresponding reciprocating mechanisms, thereby realizing the grabbing and cutting of the fiber yarns. After any manipulator moves to the set grabbing position, it grabs the fiber yarns delivered by the feeding device located at the rear end of the frame. After the manipulator continues to move forward to a set distance, the other manipulator grabs the fiber yarns continued to be delivered by the feeding device at the rear end from the rear. When the front manipulator continues to move to the set position and releases the fiber yarns, the manipulator located at the rear synchronously cuts the fiber yarns but continues to grab and pull forward, thereby completing the cutting of a section of fiber yarns. After the rear manipulator pulls the fiber yarns forward to deliver the set distance, the front manipulator returns and repeats the action of the rear manipulator. Continuous automatic wire cutting is completed by the two manipulators cyclically executing the actions.

2. The automatic fiber cutting machine according to claim 1, characterized in that: The manipulator includes a main structure, a lifting slider, a lifting cylinder, a left-right movable slider base, a left-right movable slider, a left-right movable cylinder and a wire cutting device. The main structure is slidably arranged on a frame through guide wheels. The lifting slider is slidably installed on a lifting guide rail vertically extending downward from the main structure, and is driven by the lifting cylinder to achieve up and down movement on the lifting guide rail. The left-right movable slider base is installed on the lifting slider and can move up and down on the lifting guide rail together with the lifting slider. The left-right movable slider is slidably installed on the horizontal guide rail of the left-right movable slider base, and is driven by the left-right movable cylinder to achieve left-right sliding on the horizontal guide rail. The wire cutting device is installed on the left-right movable slider, and the wire cutting devices of the two manipulators are avoided by the mutual cooperation of the lifting cylinder and the left-right movable cylinder.

3. The automatic fiber cutting machine according to claim 2, characterized in that: The wire clamping and cutting device includes a fixed frame, a front fiber wire guide groove, a rear fiber wire guide groove, a wire holding assembly, a wire cutting assembly and a wire clamping assembly. The fixed frame is installed on a left and right movable slider, and a front fiber wire guide groove and a rear fiber wire guide groove are formed below the fixed frame, which are used to guide the fiber wire to the wire holding assembly, the wire cutting assembly and the wire clamping assembly. The wire cutting assembly and the wire clamping assembly are arranged between the front fiber wire guide groove and the rear fiber wire guide groove in sequence, and the wire holding assembly is arranged in front of the front fiber wire guide groove. The wire clamping assembly includes a wire clamping cylinder and a wire clamping claw. The wire clamping cylinder is installed on the fixed frame. There are two wire clamping claws, which are symmetrically arranged on both sides of the wire clamping cylinder for clamping the fiber wire. The wire cutting assembly is arranged in front of the wire clamping assembly, and comprises a wire cutting cylinder, a wire cutting knife seat and a wire cutting knife. The wire cutting cylinder is mounted on a fixed frame. There are two wire cutting knife seats, which are symmetrically arranged on both sides of the wire cutting cylinder. Each wire cutting knife seat is equipped with a wire cutting knife. The wire cutting cylinder drives the wire cutting knife seats to move towards each other, and then the two wire cutting knives cut the fiber yarn between them. The wire holding assembly comprises a wire holding claw and a claw cylinder. The claw cylinder is mounted on a fixed frame. The wire holding claw is connected to the claw cylinder, and its opening faces downward. The claw cylinder drives its opening and closing state to achieve the height of the fiber yarn being adjusted to the range of the wire cutting knife of the wire cutting assembly.

4. The automatic fiber cutting machine according to claim 1, characterized in that: The reciprocating motion mechanism includes a synchronous belt mechanism and a power source. The synchronous belt mechanism is connected to the power source and is arranged on the top of the frame and connected to the corresponding manipulator. The synchronous belt mechanism is driven by the power source to rotate and synchronously drives the manipulator to reciprocate along one end of the frame to the other end.

5. The automatic fiber cutting machine according to claim 1, characterized in that: The frame is also provided with a conveying mechanism, which is located below the two manipulators and is used for automatically collecting the cut fiber bundles and conveying them to the outside, including a conveyor belt and a conveying power source. There are multiple conveyor belts, and the multiple conveyor belts are arranged in a row on the frame. The power shafts of two adjacent conveyor belts are connected by bearings. The conveying power source is connected to the conveyor belt located at the end, and the multiple conveyor belts are driven by the conveying power source to realize linkage conveyance.

6. The automatic fiber cutting machine according to claim 5, characterized in that: A counting disk and a proximity switch are installed at the end of the power shaft of the conveyor belt located at the very end. The counting disk is used to calculate the number of fiber bundles cut. The proximity switch is connected to the signal of the conveying power source. The conveying power source drives the conveyor belt to transport a set number of fiber bundles. The conveying distance of the fiber bundles is determined by the signal feedback of the proximity switch.

7. The automatic fiber cutting machine according to claim 1, characterized in that: The adjustable rotating shaft assembly includes a frame, a central rotating shaft and a rotating shaft. The central rotating shaft and the rotating shaft are installed on the frame, and one end of the central rotating shaft passes through the frame and is installed on the box. The central rotating shaft and the rotating shaft are both parallel to the fixed shaft. The gear on the central rotating shaft is meshed with the gear on the fixed shaft, and the gear on the rotating shaft is meshed with the gear on the central rotating shaft. A roller is provided at the end of the rotating shaft, and the distance between the two rollers is adjusted by adjusting the angle of the frame.

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