Automatic yarn joining device for winding fiber processing and yarn joining method

Abstract

The application discloses a kind of automatic hitching and cutting yarn device and hitching and cutting yarn method for winding fiber processing, including clamp, clamp cutting tool driving mechanism, cutting tool and control system;The clamp is used to clamp fiber bundle, and the cutting tool is used to cut fiber bundle;The clamp cutting tool driving mechanism is used to drive the clamp to enter and exit fiber winding area, drive the cutting tool to enter and exit fiber winding area, drive clamp to clamp fiber bundle and pull fiber bundle around the spindle rotation to wind fiber bundle on core mold, drive clamp to release fiber bundle, drive cutting tool to cut fiber bundle;Control system controls the action of each process link.The application can realize automatic hitching and cutting yarn process in winding fiber processing process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fiber winding processing, in particular to an automatic fiber clamping and cutting device and method for winding fiber processing. BACKGROUND

[0002] Winding fiber processing is an important link of fiber winding product processing, and a winding machine is generally used to realize fiber winding. The fiber bundle needs to be smoothly clamped on the workpiece to be wound at the beginning of a winding product, and the fiber bundle needs to be cut off when winding is completed. In the field of fiber winding processing, the clamping and cutting operation is generally completed manually. Manual clamping and cutting is low in efficiency and cannot realize automatic continuous production of adjacent two winding workpieces. The above problems pose a demand for realizing automatic clamping and cutting, but it is a technical problem to be solved to realize automatic clamping and cutting in product batch winding fiber processing because the fiber soaked in resin is wet and slippery, and the tension of the fiber also needs to be overcome. SUMMARY

[0003] The technical problem to be solved by the present application is to provide an automatic fiber clamping and cutting device and method for winding fiber processing, which can realize automatic clamping and cutting during the fiber winding operation of the product and significantly improve the production efficiency.

[0004] In order to solve the above technical problem, the technical scheme of the present application is as follows:

[0005] On the one hand, the present application provides an automatic fiber clamping and cutting device for winding fiber processing: including a clamp, a clamp and cutter driving mechanism, a cutter and a control system.

[0006] The clamp is used to clamp the fiber bundle.

[0007] The cutter is used to cut the fiber bundle.

[0008] The clamp and cutter driving mechanism is used to drive the clamp and / or cutter into the fiber winding area, drive the clamp and / or cutter out of the fiber winding area, drive the clamp to clamp the fiber bundle and pull the fiber bundle to rotate around the main shaft to wind the fiber bundle on the mandrel, drive the clamp to release the fiber bundle, and drive the cutter to cut the fiber bundle.

[0009] The control system controls the action of each process link according to the information returned by each sensor and the control program.

[0010] Preferably, the fiber bundle is transported by a fiber supply part, which includes a driving assembly and a movable fiber support, and the fiber supply part can drive the fiber bundle to move along the main shaft.

[0011] Preferably, the movable fiber support is provided with a through hole, and the filament outlet for controlling the deflection of the fiber bundle relative to the through hole is provided on the side of the through hole close to the mandrel. The filament outlet includes a filament outlet guide and a guide bracket. The two ends are respectively connected to one end of two guide brackets, and the other end of the guide bracket is connected to the filament outlet sleeve. The filament outlet sleeve is accommodated in the through hole and is rotatably connected to the movable fiber support.

[0012] Preferably, the drive assembly is mounted on the base and / or crossbeam of the frame.

[0013] Preferably, the drive component is a motor drive mechanism or a multi-axis industrial robot.

[0014] Preferably, the clamp can pull the fiber bundle along the main axis.

[0015] Preferably, the clamp includes a clamping clamp, and a clamping part is installed at one end of the clamping clamp.

[0016] Preferably, the shears are one of a cutting device with blades, a vibratory cutting device, or a laser cutting device.

[0017] Preferably, the shears are mounted on the outside of the clamping clamp and are fixedly connected to the clamping clamp.

[0018] Preferably, the clamp includes two clamping clamps, one end of each clamping clamp is respectively equipped with a clamping part with an arc-shaped longitudinal cross-sectional profile in the width direction of the clamping jaw sidewall, and the middle part is respectively hinged to one end of the clamping clamp bracket. The two clamping clamps open and close with the hinge point as the rotation axis.

[0019] Preferably, the clamping and shearing drive mechanism includes a clamping clamp bracket, an opening and closing drive cylinder, a clamping and shearing connection part, a support arm and a support arm connection part, and a clamping and shearing drive part. The clamping clamp is movably connected to one end of the clamping clamp bracket, and one end of the clamping clamp is driven by the opening and closing drive cylinder. The other end of the clamping clamp bracket is connected to the clamping connection part, and the other end of the clamping connection part is connected to one end of the support arm. The other end of the support arm is connected to the support arm connection part. The support arm includes two strips, and the strips are provided with support arm positioning screws for positioning their parallel swing. The support arm connection part is annular and is mounted on the main shaft.

[0020] Preferably, the support arm has a telescopic structure for adjusting its length, and the angle between the support arm and the horizontal plane passing through the main shaft is adjustable.

[0021] Preferably, the support arm connecting part is fixedly or rotatably mounted on the main shaft of the winding machine, and a clamping and shearing drive part is provided on the lower side, wherein the clamping and shearing drive part is a swing cylinder or a motor.

[0022] Preferably, the drive assembly is mounted on the base and / or crossbeam of the frame.

[0023] Preferably, both the clamping clamp and the clamping clamp bracket are columnar bodies, arranged in parallel. Clamping parts are respectively installed on the contact surfaces of the clamping clamp and the clamping clamp bracket. One end of the clamping clamp is perpendicularly connected to the piston rod of the opening and closing cylinder. The piston rod of the opening and closing cylinder passes perpendicularly through the clamping clamp bracket. The opening and closing cylinder bracket with an L-shaped longitudinal section is arranged on the side of the clamping clamp bracket opposite to the clamping clamp. The clamping clamp and the clamping clamp bracket are arranged in parallel.

[0024] Preferably, the clamping and shearing drive mechanism includes a clamping drive mechanism and a shearing drive mechanism. The shearing and shearing drive mechanism are mounted on the main shaft on one side of the mandrel, and the clamping and clamping drive mechanism are mounted on the main shaft on the other side of the mandrel. When shearing and clamping the fiber bundle, the shearing is located between the clamping and the mandrel.

[0025] Preferably, the shear drive mechanism includes a second arm, the length of which is less than the length of the first arm; the distance between the shear and the vertex of the mandrel is greater than the distance between the clamp and the vertex of the mandrel.

[0026] Preferably, the support arm connecting part is sleeved on the main shaft and is freely rotatably connected. The clamp driving mechanism includes a driving assembly, which includes a first gear, a second gear, a clamp driving motor, and a motor fixing part. The first gear is fixedly connected to the support arm connecting part, the second gear is fixedly connected to the rotating shaft of the driving motor, the second gear meshes with the first gear, the driving motor is fixed to the motor fixing part, and the motor fixing part is fixedly connected to the frame.

[0027] Preferably, the support arm connecting part is sleeved on the main shaft and freely rotatably connected to it. A cylindrical slip ring is fixedly connected to one side of the support arm connecting part, and an actuator disk is fixedly connected to the other side of the support arm connecting part. The actuator disk is movably sleeved on the main shaft. The support arm connecting part is connected to a slip ring connecting frame through the slip ring. The main shaft passes through the recess of the slip ring connecting frame. The end of the slip ring connecting frame is connected to a propulsion cylinder. The propulsion cylinder is fixedly connected to the column of the winding machine frame.

[0028] The clamping shear drive unit includes a slide rail parallel to the main shaft. The slide rail is mounted on the slip ring connecting frame. A rodless cylinder parallel to the main shaft is mounted on the side of the slide rail. The two ends of the rodless cylinder are fixedly connected to the two ends of the slide rail. The rodless cylinder actuator is fixedly connected to the moving block. The moving block is also connected to the slider of the slide rail. A shift fork is provided on one side of the moving block near the clamp. The shift fork is provided with a sliding groove. A shift pin is provided on the clamp connecting part. The shift pin is adapted to the sliding groove.

[0029] The shift fork drive cylinder is mounted on the side of the moving block via an L-shaped bracket. A shift fork slide rail parallel to the shift fork drive cylinder is set on the side of the L-shaped bracket. One end of the shift fork slide rail is connected to the piston rod of the shift fork drive cylinder, and the other end is connected to the side of the shift fork.

[0030] The arm connection locking mechanism includes a locking pin and a positioning pin. The locking pin is a spring pin with a locking mechanism support, and the positioning pin is disposed on the outer peripheral surface of the arm connection, extending beyond the arm connection near the slip ring end face.

[0031] On the other hand, the present invention provides a yarn-cutting method using the above-mentioned automatic yarn-cutting device, comprising the following steps:

[0032] Step 1: The clamps and shears enter the winding area;

[0033] Step 2: The clamp secures the fiber bundle;

[0034] Step 3: The shears cut the fiber bundle;

[0035] Step 4: The first mandrel is removed from the winding operation area, and the second mandrel enters the winding operation area;

[0036] Step 5: The clamp pulls the fiber bundle end to rotate around the second mandrel in the direction of rotation of the second mandrel;

[0037] Step 6: The fiber supply unit or the clamp moves the fiber bundle away to avoid the fiber bundle that has not yet rotated around the second mandrel;

[0038] Step 7: The clamp continues to pull the fiber bundle end to rotate around the second mandrel in the direction of rotation of the second mandrel, so as to wrap the fiber bundle around the second mandrel;

[0039] Step 8: The clamp releases the clamped fiber bundle and moves it out of the winding operation area.

[0040] In addition, the present invention also provides a fiber winding machine, including an automatic yarn cutting device for winding fiber processing as described in any of the above claims.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] Using the above technical solution, the fiber bundle is clamped and fixed on the fixture after the clamp closes. The clamp-scissor drive mechanism drives the fixture and scissors into and out of the fiber winding area, drives the fixture to clamp the fiber bundle and pull it to rotate around the main shaft to wind the fiber bundle onto the mandrel, drives the fixture to release the fiber bundle, and drives the scissors to cut the fiber bundle. The fiber supply unit includes a drive assembly and a movable fiber support. The drive assembly is mounted on the frame, and the movable fiber support is connected to the drive assembly. The drive assembly can drive the movable fiber support to move in a direction parallel to the main shaft. In the fiber winding process, the fiber bundle passing through the fiber support is clamped and pulled to wind onto the mandrel by the fixture. The rotating main shaft and the movable fiber support moving parallel to the main shaft cooperate to complete the winding process of the fiber bundle on the surface of the mandrel. The scissors can cut the fiber bundle under the drive of the clamp-scissor drive mechanism to complete the yarn cutting process. The control system controls the actions of each process step according to the position information returned by each sensor and the pre-programmed program. This invention can realize the automatic yarn laying, winding, and yarn cutting process in the fiber winding process. Attached Figure Description

[0043] Figure 1 A 3D view of a multi-station winding machine from one angle;

[0044] Figure 2 This is a perspective view of the usage state of Embodiment 1 of the present invention;

[0045] Figure 3 This is a perspective view of the clamp and shears in Embodiment 1 of the present invention;

[0046] Figure 4 This is a partial cross-sectional view of the clamp and shear in Embodiment 1 of the present invention (in order to better understand the driving connection structure between the clamping clamp 11 and the opening and closing driving cylinder 16, only the clamping clamp bracket 12 is cut, while other parts are left uncut).

[0047] Figure 5 This is a perspective view of the movable fiber optic support in Embodiment 1 of the present invention;

[0048] Figure 6 This is a perspective view of the clamp and shears in Embodiment 2 of the present invention;

[0049] Figure 7 This is a perspective view of Embodiment 3 of the present invention;

[0050] Figure 8 This is a perspective view of the usage state of Embodiment 4 of the present invention;

[0051] Figure 9 This is a perspective view of the clamp, shears, and clamp-shear drive unit in Embodiment 5 of the present invention.

[0052] Figure 10This is another perspective view of the clamp, shears, and clamp-shear drive unit in Embodiment 5 of the present invention;

[0053] Figure 11 This is a perspective view of the mechanism for rotating the drive clamp and shear around the main shaft in Embodiment 5 of the present invention (partially cut out of the outer ring 1521 of the slip ring);

[0054] Figure 12 This is a partially enlarged perspective view of the arm connection locking structure included in Embodiment 5 of the present invention;

[0055] Figure 13 This is a state diagram of the automatic yarn-cutting device when the first core mold completes winding in Embodiment 6 of the present invention;

[0056] Figure 14 This is a state diagram of the automatic yarn-cutting device when the clamps and shears enter the winding area in Embodiment 6 of the present invention;

[0057] Figure 15 This is a state diagram of the automatic yarn-cutting device in Embodiment 6 of the present invention, showing the clamps clamping the fiber bundles and the shears cutting the fiber bundles.

[0058] Figure 16 This is a state diagram of the automatic yarn-cutting device when the clamp pulls the fiber bundle end to rotate around the second core mold in Embodiment 6 of the present invention;

[0059] Figure 17 This is a state diagram of the automatic yarn-cutting device when the yarn outlet moves the fiber bundle away from the clamp in Embodiment 6 of the present invention;

[0060] Figure 18 This is a state diagram of the automatic yarn-cutting device in Embodiment 6 of the present invention when the clamp pulls the end of the fiber bundle away from the fiber bundle that has not yet rotated around the second core mold;

[0061] Figure 19 This is a state diagram of the automatic yarn-cutting device when the clamps and shears move out of the winding area in Embodiment 6 of the present invention.

[0062] In the picture:

[0063] 1; 1′-Clamping fixture, 11, 11′-Clamping clamps, 111, 111′-Clamping parts, 12, 12′-Clamping clamp brackets, 121-Clamping handle, 13-Clamping fixture connecting part, 131-Pin, 14-Support arm, 141-Support arm positioning set screw, 15-Support arm connecting part, 151-Clamping shear drive part, 152-Slip ring, 1521-Slip ring outer ring, 1522-First bearing, 1523-Second bearing, 1524-Slip ring inner ring, 1 525-Snap ring, 153-Slip ring connecting bracket, 154-Propulsion cylinder, 155-Actuator plate, 156-Propulsion cylinder bracket, 157-Outrigger connecting part locking mechanism, 1571-Locking mechanism bracket, 1572-Spring, 1573-Locking pin, 1574-Positioning pin, 1575-Actuator part, 16-Opening and closing drive cylinder, 161-Opening and closing cylinder piston rod, 17-Opening and closing cylinder bracket, 18-Connecting piece, 19-Cylinder connecting part;

[0064] 2-Shearing tool, 24-Second arm;

[0065] 3-Core mold, 3′-First core mold, 3″-Second core mold;

[0066] 4-Clamping shear drive unit, 41-Shift fork, 411-Slide groove, 412-Shift fork drive cylinder, 413-Shift fork slide rail, 42-Moving block, 43-Rodless cylinder, 44-Rodless cylinder actuator, 45-Fixed block, 46-Slide rail;

[0067] 5-Fiber supply section, 51-Movable fiber support, 511-Through hole, 52-Drive assembly, 53-Fiber outlet nozzle, 531-Fiber outlet nozzle guide, 532-Guide support, 533-Fiber outlet nozzle sleeve;

[0068] 6-fiber bundles;

[0069] 7-Clamp drive assembly, 71-First gear, 72-Second gear, 73-Clamp drive motor, 74-Motor fixing part;

[0070] 8-Multi-station winding machine, 81-Frame, 811-Column, 812-Beam, 813-Base, 82-Spindle drive assembly;

[0071] 9-Spindle, spindle drive assembly 91. Detailed Implementation

[0072] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0073] Fiber bundle 6 winding is generally performed by a winding machine. Fiber bundle 6 refers to a bundle or strip of fibers or filaments, such as glass fiber, carbon fiber, basalt fiber, polyimide fiber, or plastic fiber. During fiber bundle winding, the fiber bundle 6 can be impregnated with resin, or pre-impregnated with resin can be used. In more special cases, resin-free fibers can also be used. The resin can be thermosetting or thermoplastic. Based on actual winding tests, lower resin viscosity makes automatic overlapping of the fiber bundle 6 more difficult, as lower viscosity fibers are more prone to slippage. The mandrel 3 is the object to be wound with the fiber bundle 6. For different wound products, the mandrel 3 has different shapes. In one case, the mandrel 3 is not removed after the fiber bundle 6 winding operation and remains part of the finished product; in another case, the mandrel 3 can be removed after the fiber bundle 6 winding operation and used for the winding of the next product.

[0074] Generally, the actual winding operation of fiber bundles is completed by winding equipment, while the device disclosed in this invention is the automatic yarn cutting function component of the winding equipment. Figure 1 The diagram shown is a reference image of the present invention in use, used for fiber winding processing in a multi-station vertical winding machine 8. The multi-station vertical winding machine 8 is one structural form of winding equipment (other structural forms of winding equipment include horizontal winding machines and multi-axis industrial robot winding forms, which will be described below). Figure 1The multi-station vertical winding machine shown is not intended to limit the invention, but rather to facilitate understanding of the disclosed technical solution. The multi-station vertical winding machine 8 can simultaneously wind multiple mandrels 3. The multi-station vertical winding machine 8 includes a frame 81, which includes two columns 811, a crossbeam 812, and a base 813. One end of the two vertical columns 811 is connected to the crossbeam 812, and the other end is connected to the base 813. A spindle drive assembly 91 is disposed on the side of the columns 811 and is used to drive the spindle 9 to rotate. The spindle 9 passes through the two columns 811. The mandrel 3 is fixed in the middle section of the spindle 9. The spindle 9 transmits driving force to the mandrel 3, causing the mandrel 3 to rotate about the spindle 9 as its axis. The fiber supply unit 5 for conveying the fiber bundle 6 includes a drive assembly 52 and a movable fiber support 51. The drive assembly 52 is disposed on the crossbeam 812 of the frame 81. In another case, the drive assembly 52 may be disposed on both the crossbeam 812 and the base 813. The drive unit 52 is generally a motor, preferably a servo motor, and its transmission device is generally a gear rack or ball screw. The movable fiber support 51 is connected to the drive unit 52, and the drive unit 52 can drive the movable fiber support 51 to move in a direction parallel to the main shaft 9. However, in some embodiments, based on what is known to those skilled in the art, the drive unit 52 of the fiber supply unit 5 is not a motor drive mechanism with a motor and its transmission device, but a multi-axis industrial robot. The movable fiber support 51 is disposed at the wrist of the multi-axis industrial robot, and the multi-axis industrial robot drives the movable fiber support 51 to move in a direction parallel to the main shaft 9.

[0075] It should be further noted that there is sufficient space between the fiber supply unit 5 and the mandrel 3 to ensure that the yarn shearing device of the present invention can be installed between them. During the fiber bundle 6 winding operation, the winding and conveying direction of the fiber bundle 6 is from the fiber supply unit 5 to the mandrel 3. In the winding and conveying direction of the fiber bundle 6, the shear 2 is positioned closest to the mandrel 3, the clamp 1 is positioned upstream of the shear 2, and the fiber supply unit 5 is positioned upstream of the clamp 1.

[0076] Example 1

[0077] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the automatic yarn-cutting device for winding fiber processing provided by the present invention has a clamping and cutting tool driving mechanism. The clamping and cutting tool driving mechanism further includes a clamping tool driving mechanism and a cutting tool driving mechanism. For example... Figure 3 , Figure 4As shown, the clamp 1 includes two clamping clamps 11. One end of each clamping clamp 11 is respectively equipped with a clamping part 111 with an arc-shaped longitudinal section profile in the width direction of the clamping sidewall. The clamp driving mechanism includes a clamping clamp bracket 12, an opening and closing driving cylinder 16, a clamp connecting part 13, a support arm 14, a support arm connecting part 15, and a clamping and shearing drive part 151. The clamping clamp 11 is movably connected to one end of the clamping clamp bracket 12. Specifically, the middle part of each of the two clamping clamps 11 is hinged to one end of the clamping clamp bracket 12. The two clamping clamps 11 can be opened and closed with the hinge point as the rotation axis. One end of the clamping clamp 11 is driven by the opening and closing driving cylinder 16. The other end of the clamping clamp bracket 12 is connected to the clamp connecting part 13. The clamp connecting part 13 is connected to one end of the support arm 14. The other end of the support arm 14 is connected to the support arm connecting part 15. The support arm connecting part 15 is fixedly mounted on the main shaft 9. The other ends of the two clamping clamps 11 are connected to the shafts of the two connecting pieces 18 through the through holes at both ends of the two connecting pieces 18. The other ends of the two connecting pieces 18 are connected to the shafts of the cylinder connector 19 through the through holes.

[0078] One end of the clamping bracket 12 is provided with a U-shaped connector. The two side walls of the connector have through holes. The middle sections of the two clamping clamps 11 are hinged to the clamping bracket 12 through the through holes of the connector. The clamping bracket 12 has a columnar handle 121, which is fixed to the U-shaped bottom of the connector. The other end of the handle 121 is connected to an opening / closing drive cylinder 16. The piston rod 161 of the opening / closing drive cylinder 16 passes through the hollow part of the handle 121 and is fixedly connected to the cylinder connector 19. The opening / closing drive cylinder 16 can also be replaced by a hydraulic cylinder or a motor. When the opening / closing drive cylinder 16 is replaced by a motor, the piston rod 161 of the opening / closing cylinder is a screw, and the cylinder connector 19 has a through internal thread. The screw and the internal thread constitute a transmission mechanism. The longitudinal section of the cylinder connector 19 is H-shaped. The two slots of the H-shape accommodate the connecting piece 18 and are axially connected to the connecting piece 18. The opening and closing drive cylinder 16 drives the clamp 1 to open and close through the connecting piece 18 and the cylinder connector 19. The driven end of the clamp 1 has a lever arm with the rotating shaft, so the fiber bundle 6 can be clamped with a small driving force. The opening and closing drive cylinder 16 and the hydraulic cylinder can drive the clamp 1 to open and close simply and reliably. The motor and screw can also drive the clamp 1 to open and close simply and reliably.

[0079] The middle portion of the cylinder connector 19 is connected to the piston rod 161 of the opening and closing cylinder. When the opening and closing drive cylinder 16 extends, the piston rod 161 pushes the cylinder connector 19 forward, causing the cylinder connector 19 to open one end of the clamping clamp 11 relative to the clamping part 111, thus closing the end of the clamping clamp 11 with the clamping part 111, thereby clamping the fiber bundle 6. Conversely, when the opening and closing cylinder piston rod 161 retracts, the clamping clamp 11 opens, releasing the fiber bundle 6.

[0080] In addition, the surface of the clamping part 111 that clamps the fiber bundle (6) can also be a plane. In order for the clamp 1 to clamp the fiber bundle 6 more firmly, the surface of the clamping part 111 that clamps the fiber bundle (6) can also be an irregular curved surface. The material of the clamping part 111 can be an elastic material, such as rubber or polyurethane. The above structure allows the clamp 1 to clamp and fix the fiber bundle 6 on the clamp 1. In short, this embodiment is essentially a technical solution for the opening and closing of the clamp-shaped clamp driven by the opening and closing drive device. However, it should be noted in this embodiment that the clamping clamp 11 opens or closes at a certain angle based on the rotation axis.

[0081] The shearing tool 2 is fixedly installed on the outside of the clamping clamp 11. In this case, the shearing tool 2 and the clamping clamp 11 are in a follow-up relationship, so the opening and closing drive cylinder 16 and the shearing tool drive unit 151 constitute the shearing tool drive mechanism. The shearing tool 2 can be one of three structures: a cutting device with blades, a vibrating cutting device, or a laser cutting device. The shearing tool 2 can cut the fiber bundle 6.

[0082] like Figure 3 As shown, the clamp connecting part 13 includes a body with a circular through hole. The clamp handle 121 passes through the through hole and is locked by a set screw. Before the set screw is locked, the clamp 1 needs to be adjusted to a suitable axial angle so that the clamping clamp 11 can approach the fiber bundle 6 at a suitable angle and clamp the fiber bundle 6 smoothly without causing adverse interference with the fiber bundle 6. The columnar clamp handle 121 and the circular through hole of the clamp connecting part 13 body can achieve precise axial angle adjustment, so it is a preferred structure. In addition, the clamp connecting part 13 also includes a U-shaped connecting port. The connecting port is axially connected to one end of the support arm 14. The support arm 14 is composed of two parallel swingable strips. Each strip has through holes at both ends. The connecting port of the clamp connecting part 13 is axially connected to the strips through the through holes at one end of the two strips. The through holes at the other end of the two strips are axially connected to the connecting block with a U-shaped longitudinal section on the side of the support arm connecting part 15. The strip is also equipped with a support arm positioning screw 141 for positioning its parallel swing. The support arm positioning screw 141 is a screw, which is connected to the strip through a through thread on one strip. The end face of the screw near the other strip can abut against the other strip. The swing amplitude can be controlled by adjusting the screw's screwing in and out, which will be described further below. Of course, the support arm positioning screw 141 can be set on one of the strips or on two strips respectively. In addition, the support arm connecting part 15 is ring-shaped and fixed on the main shaft 9, rotating synchronously with the main shaft 9. The support arm 14 connected to the support arm connecting part 15 has a certain angle with the horizontal surface passing through the main shaft 9 (which will be described further below).

[0083] A clamping and shearing drive unit 151 is provided on the lower side of the support arm connecting part 15. The clamping and shearing drive unit 151 is a swing cylinder or servo motor. The connecting shaft between the support arm 14 and the support arm connecting part 15 is fixedly connected to the drive shaft of the clamping and shearing drive unit 151. The clamping and shearing drive unit 151 drives the support arm 14 to swing around the drive shaft by forward and reverse rotation, so that the clamp 1 and the shear 2 reach the predetermined position for clamping the fiber bundle 6 or return to the initial position. The predetermined position and the initial position are specific positions that need to be set during the swinging process. The support arm positioning set screw 141 provided on the support arm 14 can accurately adjust the predetermined position and the initial position. That is to say, the clamping and shearing drive unit 151 drives the clamp 1 and the shear 2 to enter or move out of the winding area along the direction of the main shaft 9. In other embodiments in the art, the clamp 1 and the shear 2 need to first move parallel to the main shaft 9 and then move perpendicular to the direction of the main shaft 9 to reach the predetermined position for clamping the fiber bundle 6 or return to the initial position. In addition, the clamping and shearing drive unit 151 drives the clamping fixture 1 and the shearing fixture 2 to enter or leave the winding area along the direction of the main shaft 9. After the clamping fixture 1 and the shearing fixture 2 leave the winding area, they stay at the end of the main shaft 9 near the frame 81, which avoids occupying the space of the winding area when the yarn cutting operation is not performed, and also avoids interference with the winding or clamping of the core mold 3.

[0084] In this embodiment, after the clamping clamp 11 is closed, the fiber bundle 6 is clamped and fixed on the clamp 1. The support arm connecting part 15 is fixedly set at an appropriate position on the main shaft 9. When the main shaft 9 is driven to rotate, the torque is transmitted to the closed clamping clamp 11 through the support arm connecting part 15, the support arm 14, the clamp connecting part 13, and the clamping clamp bracket 12. The closed clamping clamp 11 then pulls the fiber bundle 6 to generate displacement in the fiber winding direction and rotates around the main shaft 9.

[0085] like Figure 5As shown, the fiber supply unit 5 also includes a fiber outlet nozzle 53. A through hole 511 is provided on the movable fiber support 51. The fiber outlet nozzle 53, used to control the deflection of the fiber bundle 6 relative to the through hole 511, is located on the side of the through hole 511 near the mandrel 3. The fiber outlet nozzle 53 includes a fiber outlet guide portion 531 and guide portion supports 532. Both ends of the fiber outlet guide portion 531 are connected to one end of each of the two guide portion supports 532. The other end of the guide portion supports 532 is connected to a fiber outlet sleeve 533, which is housed within the through hole 511. The fiber bundle 6 passes through the through hole 511 and the hollow portion of the fiber outlet sleeve 533. The fiber outlet sleeve 533 is rotatably connected to the movable fiber support 51. The feed nozzle sleeve 533 is driven, which causes the feed nozzle 53 to twist the fiber bundle 6, preventing the fiber bundle 6 from slipping off the feed nozzle guide 531. Thus, when the movable fiber support 51 is driven, it can move the fiber bundle 6 in a direction parallel to the main shaft 9, so that the fiber bundle 6 can be wound around different positions on the surface of the mandrel 3. During the winding process, the fiber bundle 6 passing through the through hole 511 and the feed nozzle 53 contacts the mandrel 3. The rotating main shaft 9, the movable fiber support 51 moving parallel to the main shaft, and the twisted feed nozzle 53 cooperate to complete the winding process of the fiber bundle 6 on the surface of the mandrel 3.

[0086] It should be further explained that, in this field, the feed nozzle guide 531 is generally located on the same horizontal plane as the main shaft 9. This results in the unwound fiber bundle 6 between the feed nozzle guide 531 and the mandrel 3 having a certain angle. In other words, the unwound fiber bundle 6 between the feed nozzle guide 531 and the mandrel 3 is inclined. For the clamp 1 and shear 2, which move horizontally into the winding area to accurately clamp and cut the fiber bundle 6, the influence of the inclined fiber bundle 6 needs to be fully considered. The solution is that the support arm 14 also has a corresponding angle so that the clamp 1 and shear 2 can accurately obtain the fiber bundle 6 after entering the winding area. The support arm connecting part 15 connecting the support arm 14 is fixedly set at an appropriate position on the main shaft 9. The rotation of the support arm 14 by the main shaft 9 can adjust the angle between the support arm 14 and the horizontal plane passing through the main shaft 9. The support arm 14 also has a telescopic structure for adjusting the length. Specifically, the support arm 14 can be set as two staggered sections. A strip groove is set at the staggered part of each support arm section. Bolts pass through the strip groove to clamp the two support arm sections 14. For those skilled in the art, it is not difficult to derive various telescopic structures of the support arm 14.

[0087] This embodiment also includes a control system, which includes a controller and position sensors. Each cylinder and motor is an actuator, and each actuator is controlled by a controller, which can be a microcontroller, PLC, or other industrial control computer. Position sensors are installed at the working positions of the propulsion cylinder 154 and the opening / closing drive cylinder 16 to transmit the position information of the piston rods of the propulsion cylinder 154, the opening / closing drive cylinder 16, and the rodless cylinder 43 to the controller. The controller controls each actuator to operate according to the workflow based on the position information returned by each sensor and the pre-programmed control flow.

[0088] Example 2

[0089] like Figure 6 As shown, the structure and closing form of clamp 1′ in this embodiment differ from those in embodiment 1, being a parallel closure, while other parts are the same as in embodiment 1. Clamping clamp 11′ consists of two perpendicular cylindrical sections, and clamping clamp support 12′ is a single cylindrical section. One cylindrical section of clamping clamp 11′ is parallel to clamping clamp support 12′. Clamping portions 111′ are respectively provided on the contact surfaces of clamping clamp 11′ and clamping clamp support 12′, preferably made of metal. One end of clamping clamp support 12′ is mounted to clamp connecting portion 13 via a set screw. Clamping clamp 11′ is also movably connected to one end of clamping clamp support 12′. Specifically, the other cylindrical section of clamping clamp 11′ slides vertically through clamping clamp support 12′ and connects to the piston rod 161 of the opening / closing cylinder. An L-shaped opening / closing cylinder support 17 is fixedly disposed on the side of clamping clamp support 12′ opposite to clamping clamp 11′, used to fix the opening / closing drive cylinder 16. In this embodiment, the relationship between the opening and closing of the cylinder piston rod 161 and the clamping clamp 11' is reversed compared to Embodiment 1. When the cylinder piston rod 161 retracts, it causes the clamping clamp 11' to close parallel to the clamping clamp bracket 12', thereby clamping the fiber bundle 6. When the cylinder piston rod 161 extends, it causes the clamping clamp 11' to open away from the clamping clamp bracket 12'. In fact, the clamping clamp bracket 12' in this embodiment, which clamps a portion of the fiber bundle 6, can also be understood as another clamping clamp 11', because it clamps the fiber bundle 6 together with the clamping clamp 11'. However, the clamping clamp bracket 12' is not driven. Another function of the clamping clamp bracket 12' is to connect the clamping clamp 11' and the clamping fixture connection part 13.

[0090] Example 3

[0091] like Figure 7As shown, this embodiment is another installation method for the shearing tool. The shearing tool 2 and its driving mechanism are installed on the main shaft 9 on one side of the mandrel 3, and the clamp 1 and its driving mechanism are installed on the main shaft 9 on the other side of the mandrel 3. In this embodiment, the shearing tool driving mechanism also includes an opening and closing driving cylinder 16 and a clamping shearing tool driving part 151. When shearing the fiber bundle 6, the shearing tool 2 is located between the clamp 1 and the mandrel 3. The driving structure and driving method of the shearing tool 2 in this embodiment are exactly the same as in embodiment 1. The shearing tool 2 is closer to the mandrel 3, which can be achieved by the length of the second support arm 24 in the shearing tool driving mechanism being less than the length of the support arm 14 in the clamp driving mechanism, or by the distance between the shearing tool 2 and its driving mechanism and the vertex of the mandrel 3 being greater than the distance between the clamp 1 and its driving mechanism and the vertex of the mandrel 3. This ensures that when shearing and clamping the fiber bundle 6, after the shearing tool 2 cuts the fiber bundle 6, the clamp 1 can clamp the fiber bundle 6 and wrap the fiber bundle 6 around the mandrel 3.

[0092] Example 4

[0093] like Figure 8 As shown, the structure of the drive clamp 1 and shear 2 rotating around the main shaft 9 in this embodiment differs from that in Embodiment 1, but everything else is the same as in Embodiment 1. The driving torque for the rotation of the clamp 1 and shear 2 around the main shaft 9 in this embodiment comes from the clamp drive assembly 7, so the clamp drive assembly 7 also belongs to the clamp drive mechanism. The clamp drive assembly 7 includes a first gear 71, a second gear 72, a clamp drive motor 73, and a motor fixing part 74. The clamp drive motor 73 is fixed on the motor fixing part 74, and the motor fixing part 74 is fixedly connected to the frame 81.

[0094] In this embodiment, the support arm connecting part 15 is sleeved on the main shaft 9 and is freely rotatably connected. The support arm connecting part 15 is fixedly connected to the first gear 71, and the second gear 72 is fixedly connected to the rotating shaft of the clamp drive motor 73. The second gear 72 meshes with the first gear 71. When the clamp drive motor 73 rotates, the torque is transmitted to the clamp 1 and the shear 2 through the meshing transmission of the first gear 71 and the second gear 72. The clamp drive motor 73 can also transmit torque to the support arm connecting part 15 through a transmission structure such as a belt, lead screw, or gear rack, thereby driving the clamp 1 and the shear 2 to rotate around the main shaft 9.

[0095] In addition, the clamp drive motor 73 drives the support arm connection part 15 to rotate, which can also realize that the support arm 14 described above has a corresponding angle and adjust the size of the angle so that the clamp and shear can accurately obtain the fiber bundle 6 after entering the winding area.

[0096] Example 5

[0097] In this embodiment, the clamp 1, opening and closing drive cylinder 16, clamp connecting part 13, support arm 14, support arm connecting part 15, shear 2, core mold 3, and main shaft 9 are all the same as in embodiment 1. The remaining different structures provide a clamp-shear drive mechanism different from that in embodiment 1. Figure 9 , 10 As shown, in this embodiment, the support arm connecting part 15 is sleeved on the main shaft 9 and freely rotatably connected to it. The support arm connecting part 15 is connected to the slip ring connecting frame 153 through the slip ring 152. Figure 11 As shown, the slip ring 152 includes a cylindrical inner slip ring 1524 and an outer slip ring 1521. The inner slip ring 1524 is slidably mounted on the main shaft 9 and is fixedly connected to the support arm connecting part 15. At least one bearing is installed between the inner slip ring 1524 and the outer slip ring 1521. In this embodiment, there are two bearings. The inner rings of the first bearing 1522 and the second bearing 1523 are sleeved on the inner slip ring 1524, and the outer rings of the first bearing 1522 and the second bearing 1523 are snapped onto the outer slip ring 1521. Two retaining grooves are also provided on the outer circumferential surface of the inner slip ring 1524, and two retaining springs 1525 are respectively disposed in the two retaining grooves. The two retaining springs 1525 are used to retain the first bearing 1522 and the second bearing 1523 respectively. Specifically, one retaining ring 1525 abuts against the first bearing 1522 to prevent it from slipping off the inner ring 1524 of the slip ring, and another retaining ring 1525 abuts against the second bearing 1523 to prevent it from slipping off the inner ring 1524 of the slip ring. Correspondingly, the inner wall of the outer ring 1521 of the slip ring is provided with two notched bearing positions to accommodate the first bearing 1522 and the second bearing 1523. The first bearing 1522 and the second bearing 1523 are restricted by the two notched bearing positions and the protrusions on the inner wall of the outer ring 1521 of the slip ring. This allows the outer ring 1521 and the inner ring 1524 of the slip ring to slide synchronously on the main shaft 9.

[0098] The outer ring 1521 of the slip ring is symmetrically connected to one end of the two auxiliary supports of the slip ring connecting frame 153. The other ends of the two auxiliary supports are connected to the U-shaped main frame. The main shaft 9 passes through the recess of the slip ring connecting frame 153. The cylinder body of the push cylinder 154 is set on the slip ring connecting frame 153. The piston rod of the push cylinder 154 is connected to the push cylinder support 156. The other end of the push cylinder support 156 is fixed to the column of the winding machine frame 81. Alternatively, the cylinder body of the push cylinder 154 is set on the push cylinder support 156. The piston rod of the push cylinder 154 is connected to the slip ring connecting frame 153. The other end of the push cylinder support 156 is still fixed to the column of the winding machine frame 81.

[0099] The piston rod of the push cylinder 154 actuates, pushing the slip ring 152 and the support arm connecting part 15, which are sleeved on the main shaft 9, to slide along the main shaft 9. The push cylinder 154 can also be other drive and transmission structures, such as a hydraulic cylinder, a motor, and a gear and rack. A disc-shaped actuator disk 155 is fixedly connected to the side of the support arm connecting part 15 near the core mold 3. The actuator disk 155 is slidably sleeved on the main shaft 9. When the actuator disk 155 contacts the core mold 3, it generates sufficient force, causing the core mold 3 to drive the actuator disk 155 to rotate, thereby driving the support arm connecting part 15 to rotate around the main shaft 9. To ensure that the actuator disk 155 generates a sufficiently large force when it is pressed against the core mold 3, the part of the actuator disk 155 that contacts the core mold 3 matches the shape of the core mold 3, and the contact surface of the actuator disk 155 is rough or has a sufficient number of protrusions. The material of the actuator disk 155 is preferably rubber. Another technical solution is that the actuating disk 155 has a structure that embeds into the surface of the core mold 3, such as a needle-like structure or a tooth-like structure. Of course, the depth of the embedding structure into the core mold 3 must be reasonably controlled to avoid damaging the core mold 3. In this case, the preferred material for the actuating disk 155 is metal. Another technical solution is that the actuating disk 155 is a suction cup, which generates an interaction force with the surface of the core mold 3 by negative pressure. For the three technical solutions described above, when the piston rod of the push cylinder 154 is pushed out, it pushes the actuating disk 155 to press against the core mold 3. There is a sufficiently large interaction force between the actuating disk 155 and the core mold 3. The core mold 3, which rotates synchronously with the main shaft 9, can drive the support arm connecting part 15 to rotate around the main shaft 9 as the axis. At the same time, the support arm 14 drives the clamp 1 to rotate around the core mold 3.

[0100] like Figure 9 , Figure 10 As shown, this embodiment also includes another implementation whereby the clamp 1 and the shear 2 enter or exit the winding area along the direction of the main shaft 9. The clamp-shear drive unit 4 includes a slide rail 46 parallel to the main shaft 9, which is mounted on the side of the slip ring connecting frame 153. A rodless cylinder 43 parallel to the main shaft 9 is mounted on the side of the slide rail 46. The two ends of the rodless cylinder 43 are fixedly connected to the two ends of the slide rail 46 by plate-shaped fixing blocks 45. The rodless cylinder actuator 44 is fixedly connected to the strip-shaped moving block 42, which is also connected to the slider of the slide rail 46. The rodless cylinder actuator 44 drives the moving block 42 to reciprocate along the slide rail 46.

[0101] A fork 41 is also provided on one side of the moving block 42 near the clamp 1. The fork 41 is parallel to the moving block 42 in the horizontal direction and is a plate-shaped component with a groove 411. The opening of the groove 411 points towards the main shaft 9. Matching the groove 411 is a columnar pin 131 provided on the clamp connecting part 13. The columnar pin 131 is perpendicular to the fork 41. The sliding engagement between the pin 131 and the groove 411 allows the clamp 1 to reach the predetermined position for clamping the fiber bundle 6 or return to the initial position as the rodless cylinder actuator 44 moves. In this embodiment, the precise predetermined and initial positions of the clamp 1 and the shear 2 are still adjusted by the support arm positioning set screw 141 of the support arm 14 plate. During the above process, the shift fork 41 moves parallel to the main shaft 9. However, in order to allow the columnar shift pin 131 to enter or disengage from the slide groove 411 of the shift fork 41, the shift fork 41 can also perform a reciprocating motion perpendicular to the main shaft 9 in the vertical direction. This is achieved by the shift fork drive cylinder 412 and the shift fork slide rail 413. The shift fork drive cylinder 412 is vertically mounted on the side of the moving block 42 via an L-shaped bracket. The piston rod of the shift fork drive cylinder 412 can move in the vertical direction. In addition, the shift fork slide rail 413, which is parallel to the shift fork drive cylinder 412, is set on the side of the L-shaped bracket. One end of the shift fork slide rail 413 is connected to the piston rod of the shift fork drive cylinder 412, and the other end is connected to the side of the shift fork 41. When the shift fork drive cylinder 412 is activated, the columnar shift pin 131 can enter or disengage from the slide groove 411 of the shift fork 41, thereby allowing the clamp 1 and the shear 2 to enter or leave the winding area with the moving block 42, and avoiding interference with the clamp and shear performing yarn cutting operations and product winding operations as described below. Specifically, when the clamps and shears need to enter the winding area to perform yarn shearing, the shift fork drive cylinder 412 pushes the shift fork 41 to rise, and the columnar shift pin 131 enters the slide groove 411 of the shift fork 41. At this time, the clamps 1 and shears 2 can be sent into the winding area by the rodless cylinder 43. After the clamps 1 and shears 2 perform the clamping and shearing action but before performing other actions, the shift fork drive cylinder 412 pushes the shift fork 41 to descend, and the columnar shift pin 131 disengages from the slide groove 41. 1. Then, the shift fork 41 and the moving block 42 move out of the winding area without interfering with the next action of the clamp 1 and the shear 2. When the clamp 1 and the shear 2 need to move out of the winding area after completing the yarn cutting operation, the shift fork 41 and the moving block 42 enter the winding area, the shift fork drive cylinder 412 pushes the shift fork 41 to rise, the columnar shift pin 131 enters the slide groove 411 of the shift fork 41, and the clamp 1 and the shear 2 are moved out of the winding area by the rodless cylinder 43 of the clamp shear drive part 4.

[0102] like Figure 12This embodiment also includes a support arm connecting part locking mechanism 157, which on the one hand can realize that the support arm 14 described above has a corresponding angle so that the clamp and shear can accurately obtain the fiber bundle 6 after entering the winding area; on the other hand, the support arm 14 has a corresponding angle, the clamp 1, the shear 2 and the clamp connecting part 13 are all in a stable specific position, the shift fork drive cylinder 412 drives the shift fork 41 to move, and can accurately capture the shift pin 131 in the vertical direction, ensuring that the shift pin 131 is accurately and reliably inserted into the slide groove 411. The arm connection locking mechanism 157 includes a locking mechanism bracket 1571, which is fixedly installed on a secondary bracket of the slip ring connecting frame 153, which is located far from the fiber supply section 5. The main body of the locking mechanism bracket 1571 has a U-shaped longitudinal section, and the two side walls of the U-shape have through holes. A columnar locking pin 1573 passes through the through holes. One end of the locking pin 1573 is an actuating part 1575 with a bevel. The locking pin 1573 inside the U-shaped body of the locking mechanism bracket 1571 is provided with an annular flange. A spring 1572 is fitted on the locking pin 1573. The spring 1572 is restricted by the flange and the U-shaped body of the locking mechanism bracket 1571. In fact, the locking pin 1573 is a telescopic spring pin. The arm connection locking mechanism 157 also includes a positioning pin 1574, which is positioned at an appropriate location on the outer circumferential surface of the arm connection 15. The end face of the positioning pin 1574 near the slip ring 152 is cylindrical, extending beyond the arm connection 15. During fiber winding, the positioning pin 1574 rotates with the arm connection 15. When the positioning pin 1574 contacts the actuating part 1575, the locking pin 1573, being a retractable spring pin, retracts upon contact, preventing obstruction of the positioning pin 1574 and the arm connection 15. When the fiber winding stops, the positioning pin 1574 should rotate past the locking pin 1573. At this time, the positioning pin 1574 is located below the locking pin 1573, so the locking pin 1573 abuts against the positioning pin 1574. This positions the support arm 14, which is also connected to the support arm connection part 15, so that the support arm 14 has the corresponding angle described above, so that the clamp 1 and the shear 2 can accurately obtain the fiber bundle 6 after entering the winding area. The positioning pin 1574 is set at different positions on the outer peripheral surface of the support arm connection part 15, so that the angle between the support arm 14 and the horizontal plane passing through the main shaft 9 can be adjusted.

[0103] Example 6

[0104] The present invention also provides a method for laying and cutting fiber bundles based on the above-mentioned automatic fiber winding and cutting device, comprising the following steps:

[0105] Step 1: The clamp (1; 1') and shear 2 enter the winding area;

[0106] Step 2: Clamp (1; 1') clamps the fiber bundle 6;

[0107] Step 3: Cut the fiber bundle 6 with shear 2;

[0108] Step 4: The first core mold 3′ is moved out of the winding operation area, and the second core mold 3″ enters the winding operation area;

[0109] Step 5: The clamp (1; 1') pulls the fiber bundle 6 to rotate around the second core mold 3" in the direction of rotation of the second core mold 3".

[0110] Step 6: The fiber supply unit 5 and / or the clamp (1; 1') move the fiber bundle 6 away to avoid the fiber bundle 6 that has not yet rotated around the second mandrel 3'.

[0111] Step 7: The clamp (1; 1′) continues to pull the fiber bundle 6 to rotate around the second core mold 3″ in the direction of rotation of the second core mold 3″, and winds the fiber bundle 6 around the second core mold 3″.

[0112] Step 8: The clamp (1; 1′) releases the clamped fiber bundle 6 and moves it out of the winding operation area.

[0113] Initial state, such as Figure 13 The first mandrel 3' has completed the fiber bundle 6 winding operation, and the clamp 1 and shear 2 have not entered the winding area. Afterwards, as... Figure 14The clamp 1 and the shear 2 are driven into the winding area to reach the predetermined position for clamping and shearing the fiber bundle 6 (the two specific driving methods have been described above). It should be further explained that, as described in the previous embodiment, the support arm 14 connecting the clamp (1; 1') and / or the shear 2 is at a certain angle to the horizontal surface passing through the main shaft 9 so that the clamp (1; 1') and / or the shear 2 can accurately obtain the inclined fiber bundle 6. Whether the fiber bundle 6 is inclined depends on the specific winding end position of the fiber bundle 6 on the surface of the first mandrel 3'. When the winding ends at the part of the first mandrel 3' away from the main shaft 9, the fiber bundle 6 is inclined, so the support arm 14 should have a corresponding angle; when the winding ends on the horizontal plane passing through the axis of the first mandrel 3', since the unwound fiber bundle 6 is in a horizontal state, the support arm 14 should also be in this horizontal plane, and the clamp (1; 1') and / or the shear 2 move in this horizontal plane to accurately obtain the inclined fiber bundle 6. For example, the first mandrel 3' disclosed in this invention is capsule-shaped, with a cylindrical section in the middle and hemispheres at both ends. When winding ends at the cylindrical section of the first mandrel 3', the fiber bundle 6 is inclined, and the support arm 14 should have a corresponding angle. When winding ends at a fixed point at the hemispherical end of the first mandrel 3', the unwound fiber bundle 6 is horizontal, and the support arm 14 is on this horizontal plane. In other words, the angle between the support arm 14 and the horizontal plane passing through the main shaft 9 is adjustable, which can satisfy the requirement that the fiber bundle 6 ends winding at different parts of the mandrel 3, avoiding the process limitations of the fiber winding end point. In addition, this invention discloses that the length of the support arm 14 is adjustable, and also discloses that the angle between the support arm 14 and the horizontal plane passing through the main shaft 9 is adjustable, which can realize the yarn cutting operation for mandrels 3 of different sizes and shapes.

[0114] Furthermore, such as Figure 15As shown, the clamping clamp 11 of the fixture 1 closes, clamping and fixing the fiber bundle 6. In one case, the shear 2 is a blade and is mounted on the fixture 1. In another embodiment, the clamping part 111 in the fixture 1 described in embodiment 1 is made of elastic rubber or polyurethane. The purpose of using an elastic material for the clamping part 111 is to clamp the fiber bundle 6 first when the fixture 1 closes, and then the clamping part 111 is driven to continue compressing. Only then does the shear 2 cut the fiber bundle 6. Clamping first and cutting later is to prevent the fiber bundle 6 from slipping. For those skilled in the art, it is not difficult to imagine that if the shear 2 cuts the fiber bundle 6 first and the fixture 1 clamps it in the next step, the resin-impregnated fiber bundle 6 will easily slip off the fixture 1. Even if the shear 2 is mounted on the fixture 1 and there is a relatively short distance between the two, it is difficult to guarantee reliable clamping of the fiber bundle 6. The clamping part 111 is made of elastic material, which can clamp the fiber bundle 6 when the two clamping parts 111 are just closed, preventing the fiber bundle 6 from slipping. Then, under the continued drive of the opening and closing drive cylinder 16, the clamping part 111 is compressed. At this time, the shear 2 can contact the fiber bundle 6 and cut it. That is to say, the cutting edge of the shear 2 (i.e., the blade) needs to be flush with the position where the clamping part 111 is further compressed. However, in another case, the shear 2 is a vibration cutting device or a laser cutting device. The fiber bundle 6 can be cut after the clamping is closed by controlling the start of the vibration cutting device or laser cutting device. The specific setting and structure of the vibration cutting device or laser cutting device are not difficult for those skilled in the art to understand.

[0115] Furthermore, after the shearing tool 2 cuts the fiber bundle 6, the first mandrel 3' is removed from the winding operation area, and the second mandrel 3'" enters the winding operation area. For example... Figure 16In the fiber bundle 6 conveying direction, the clamp 1 clamps and pulls the fiber bundle 6 toward the second mandrel 3" and pulls the fiber bundle 6 to rotate around the second mandrel 3" in the rotation direction of the second mandrel 3" so that the fiber bundle 6 surrounds the outer surface of the second mandrel 3"; however, at this time, the clamp 1 pulls the fiber bundle 6 to complete at most one rotation around the second mandrel 3" at this time. In Embodiments 1 and 5, in which the clamp 1 is driven to rotate around the main shaft 9, when the clamp 1 pulls the fiber bundle 6 toward the second mandrel 3" and completes at most one rotation around the second mandrel 3", the second mandrel 3" is driven to rotate by the main shaft 9. In these two embodiments, with the main shaft 9 as the rotation axis, it is preferable that the angular velocity of the clamp 1 pulling the fiber bundle 6 to rotate around the second mandrel 3" is the same as the angular velocity of the second mandrel 3" being driven to rotate. In embodiment 4, where the driving fixture rotates around the main shaft 9, when the fixture 1 pulls the fiber bundle 6 toward the second mandrel 3" and completes at most one turn of winding around the second mandrel 3" during this period, the second mandrel 3" can be driven to rotate by the main shaft 9 or can be rotated without being driven to rotate by the main shaft 9. This is because in embodiment 4, the driving force for the fixture 1 to pull the fiber bundle 6 toward the second mandrel 3" and rotate around the second mandrel 3" does not come from the main shaft 9, but from the fixture driving assembly 7.

[0116] Furthermore, such as Figure 17 To avoid interference between the fiber bundle 6, which has not yet rotated around the second mandrel 3", and the clamp 1 in the fiber conveying direction, the fiber supply unit 5 moves the fiber bundle 6, which has not yet rotated around the second mandrel 3", along the main shaft 9 to avoid the clamp 1 and stop at an appropriate position (the appropriate position should be determined considering that the fiber bundle 6 already wrapped around the surface of the second mandrel 3" will not be excessively pulled and fall off, so as to ensure that the subsequent winding operation can be carried out smoothly). During this process, the clamp 1 pulls the fiber bundle 6 to pause rotating around the second mandrel 3". In another case, while the filament outlet 53 moves the fiber bundle 6, which has not yet rotated around the second mandrel 3", away from the clamp 1 and stops at an appropriate position, the clamp 1 simultaneously pulls the fiber bundle 6 to rotate around the second mandrel 3" to obtain a shorter winding operation time.

[0117] However, as Figure 18To avoid interference between the fiber bundle 6, which has not yet rotated around the second mandrel 3", and the clamp 1 in the fiber conveying direction, the fiber supply unit 5 does not move the fiber bundle 6 away from the clamp 1. The fiber outlet 53 is stationary. Instead, the clamp 1 pulls the fiber bundle 6 along the main shaft 9 to avoid the fiber bundle 6 that has not yet rotated around the second mandrel 3" and stops it at an appropriate position (the appropriate position should be determined considering that the fiber bundle 6 already wrapped around the surface of the second mandrel 3" will not be excessively pulled and fall off, so as to ensure that the subsequent winding operation can be carried out smoothly). In the winding operation, in order to obtain a product with better winding quality, it is preferable that the fiber bundle 6 is wrapped around the surface of the mandrel 3 in a close-to-each-other state. Therefore, when the fiber supply unit 5 moves the fiber bundle 6 that has not yet rotated around the second mandrel 3" along the main shaft 9, it will move the fiber bundle 6 away from the clamp 1. After the shaft 9 moves to avoid the clamp 1, the fiber supply unit 5 should also drive the fiber bundle 6 that has not yet rotated around the second mandrel 3" back to its original position so that the fiber bundles 6 are tightly wrapped around each other on the surface of the mandrel 3. In this regard, after the clamp 1 pulls the fiber bundle 6 along the main shaft 9 to avoid the fiber bundle 6 that has not yet rotated around the second mandrel 3", it is not necessary to drive the fiber bundle 6 back to its original position. This is because the clamp 1 specifically clamps the end of the fiber bundle 6, which is the starting step of the winding operation. Therefore, the end of the fiber bundle 6 driven by the clamp 1 does not need to return to its original position, but is directly covered by the fiber bundle 6 that continues to be wrapped on the surface of the mandrel 3. This will not affect the quality of the wound product. Therefore, the clamp 1 pulls the fiber bundle 6 along the main shaft 9 to avoid the fiber bundle 6 that has not yet rotated around the second mandrel 3" with a shorter winding operation time, which is the preferred solution. Similarly, during this process, clamp 1 pulls the fiber bundle 6 to pause rotating around the second mandrel 3". In another case, while clamp 1 pulls the fiber bundle 6 away from the fiber bundle 6 that has not yet rotated around the second mandrel 3" and stops it in the appropriate position, clamp 1 simultaneously pulls the fiber bundle 6 to rotate around the second mandrel 3" to obtain a shorter winding operation time.

[0118] In addition, to avoid interference between the fiber bundle 6, which has not yet rotated around the second core mold 3", and the clamp 1 in the fiber conveying direction, the fiber supply unit 5 and the clamp 1 can also simultaneously move the fiber bundle 6 to avoid it. Specifically, while the fiber supply unit 5 moves the fiber bundle 6, which has not yet rotated around the second core mold 3", along the main shaft 9 to avoid the clamp 1, the clamp 1 also pulls the fiber bundle 6 to move along the main shaft 9 to avoid the fiber bundle 6, which has not yet rotated around the second core mold 3".

[0119] It should be noted that, in various embodiments, after successfully avoiding interference between the fiber bundle 6, which has not yet rotated around the second mandrel 3" in the fiber conveying direction, and the clamp, the clamp 1 or the filament outlet 53 that has been displaced can be reset to the initial position before the displacement. However, it is preferable that the clamp or the filament outlet 53 that has been displaced is not reset to the initial position before the displacement in order to obtain a shorter operation time.

[0120] Furthermore, after initially preventing interference between the fiber bundle 6, which has not yet rotated around the second mandrel 3" in the fiber conveying direction, and the clamp 1, the clamp 1 continues to pull the fiber bundle 6 to rotate around the second mandrel 3" in the rotation direction of the second mandrel 3" and wrap the fiber bundle 6 around the second mandrel 3" in the rotation direction of the second mandrel 3". It should be noted that during the process of the clamp continuing to pull the fiber bundle 6 to rotate around the second mandrel 3" in the rotation direction of the second mandrel 3", it is necessary to again prevent interference between the fiber bundle 6, which has not yet rotated around the second mandrel 3" in the fiber conveying direction, and the clamp. Also preferably, in Embodiments 1 and 5, with the main shaft 9 as the rotation axis, the angular velocity of the clamp pulling the fiber bundle 6 to rotate around the second mandrel 3" during this period is the same as the angular velocity of the second mandrel 3" being driven to rotate on its own.

[0121] Furthermore, such as Figure 19 As shown, the clamp 1 continues to pull the fiber bundle 6 to rotate around the second mandrel 3" in the rotation direction of the second mandrel 3" to a certain position. At this time, the force between the fiber bundles 6 wrapped around the outer surface of the second mandrel 3" and the resultant force of the force between the fiber bundle 6 and the outer surface of the second mandrel 3" are greater than the winding tension of the fiber bundle 6. Even if the clamp 1 releases the clamped fiber bundle 6, the unwound fiber bundle 6 can still be smoothly wound around the outer surface of the second mandrel 3" so next, the clamp 1 releases the clamped fiber bundle 6 and moves out of the winding operation area. The second mandrel 3" is driven to continue rotating. At the same time, the movable fiber support 51 and the fiber outlet 53 are driven to move and transport the fiber bundle, continuing to wind the fiber bundle 6 around the outer surface of the second mandrel 3" to obtain a finished wound workpiece that meets the requirements.

[0122] In a preferred embodiment, the diameter of the mandrel 3 is 350 mm, and the spindle 9 rotates at 70 r / min. Ignoring the time taken for the first mandrel 3' to move out of the winding area and the second mandrel 3'' to enter the winding area, the automatic yarn cutting time of the technical solution disclosed in this invention is 50-60 seconds. By using the technical solution disclosed in this invention at each winding station of the multi-station winding machine 8, the automatic yarn cutting operation of multiple winding stations can be completed simultaneously within 50-60 seconds, saving manpower and improving winding operation efficiency. Furthermore, in several embodiments disclosed in this invention, the clamps (1; 1') pull the fiber bundle 6 to rotate around the mandrel 3, ensuring that the fiber bundle 6 is firmly pressed onto the mandrel 3, eliminating the influence of low-viscosity resin on automatic yarn cutting. Reliable automatic yarn cutting of the fiber bundle 6 can be achieved under various winding operations in this field.

[0123] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. An automatic yarn-cutting device for processing wound fibers, characterized in that: Includes a clamp (1; 1'), a clamp-shear drive mechanism, a shear (2), and a control system; The clamp (1; 1') is used to clamp the fiber bundle (6); The shears (2) are used to cut the fiber bundles (6); The clamping and shearing drive mechanism is used to drive the clamp (1; 1') and / or the shear (2) into the fiber winding area, drive the clamp (1; 1') and / or the shear (2) away from the fiber winding area, drive the clamp (1; 1') to clamp the fiber bundle (6) and pull the fiber bundle (6) to rotate around the main shaft (9) to wind the fiber bundle (6) onto the mandrel (3), drive the clamp (1; 1') to release the fiber bundle (6), and drive the shear (2) to cut the fiber bundle (6). The clamp (1; 1') can pull the fiber bundle (6) to move along the main axis (9); The control system controls the actions of each process step based on the information returned by each sensor and the control program.

2. The automatic yarn-cutting device for winding fiber processing according to claim 1, characterized in that: The fiber bundle (6) is conveyed by the fiber supply unit (5), which includes a drive assembly (52) and a movable fiber support (51). The fiber supply unit (5) can drive the fiber bundle (6) to move along the main shaft (9).

3. The automatic yarn-cutting device for winding fiber processing according to claim 2, characterized in that: The movable fiber support (51) is provided with a through hole (511). The filament outlet (53) for controlling the deflection of the fiber bundle (6) relative to the through hole (511) is provided on the side of the through hole (511) close to the core mold (3). The filament outlet (53) includes a filament outlet guide (531) and a guide bracket (532). Both ends are connected to one end of two guide brackets (532), and the other end of the guide brackets (532) is connected to the filament outlet sleeve (533). The filament outlet sleeve (533) is accommodated in the through hole (511) and is rotatably connected to the movable fiber support (51).

4. The automatic yarn-cutting device for winding fiber processing according to claim 2, characterized in that: The drive assembly (52) is mounted on the base (813) and / or crossbeam (812) of the frame (81).

5. The automatic yarn-cutting device for winding fiber processing according to claim 2, characterized in that: The drive component (52) is a motor drive mechanism or a multi-axis industrial robot.

6. The automatic yarn-cutting device for processing wound fibers according to claim 1, characterized in that: The clamp (1; 1') includes a clamping clamp (11; 11'), and a clamping part (111; 111') is installed at one end of the clamping clamp (11; 11').

7. The automatic yarn-cutting device for winding fiber processing according to claim 1, characterized in that: The shears (2) are one of a cutting device with blades, a vibratory cutting device, or a laser cutting device.

8. The automatic yarn-cutting device for winding fiber processing according to claim 7, characterized in that: The shears (2) are installed on the outside of the clamping clamp (11; 11') and are fixedly connected to the clamping clamp (11; 11').

9. The automatic yarn-cutting device for winding fiber processing according to claim 1, characterized in that: The clamp (1) includes two clamping clamps (11). One end of each clamping clamp (11) is equipped with a clamping part (111) with an arc-shaped longitudinal section profile in the width direction of the clamping sidewall. The middle part is respectively hinged to one end of the clamping clamp bracket (12). The two clamping clamps (11) open and close with the hinge point as the rotation axis.

10. The automatic yarn-cutting device for winding fiber processing according to claim 9, characterized in that: The clamping and shearing drive mechanism includes a clamping bracket (12; 12´), an opening and closing drive cylinder (16), a clamping connection part (13), a support arm (14) and a support arm connection part (15), and a clamping and shearing drive part (151). The clamping clamp (11) is movably connected to one end of the clamping bracket (12). One end of the clamping clamp (11) is driven by the opening and closing drive cylinder (16). The other end of the clamping bracket (12) is connected to the clamping connection part (13). The other end of the clamping connection part (13) is connected to one end of the support arm (14). The other end of the support arm (14) is connected to the support arm connection part (15). The support arm (14) includes two strips. The strips are provided with support arm positioning set screws (141) for positioning its parallel swing. The support arm connection part (15) is annular and is set on the main shaft (9).

11. The automatic yarn-cutting device for processing wound fibers according to claim 10, characterized in that: The arm (14) has a telescopic structure for adjusting the length, and the angle between the arm (14) and the horizontal plane passing through the main shaft (9) is adjustable.

12. The automatic yarn-cutting device for processing wound fibers according to claim 10, characterized in that: The arm connecting part (15) is fixedly or rotatably mounted on the main shaft (9) of the winding machine (8), and a clamping and shearing drive part (151) is provided on the lower side. The clamping and shearing drive part (151) is a swing cylinder or a motor.

13. The automatic yarn-cutting device for processing wound fibers according to claim 1, characterized in that: The clamp (1) includes a clamping clamp (11'), and the clamping and shearing drive mechanism includes a clamping clamp bracket (12'). Both the clamping clamp (11') and the clamping clamp bracket (12') are columnar bodies and are arranged in parallel. A clamping part (111') is installed on the contact surface of the clamping clamp (11') and the clamping clamp bracket (12'). One end of the clamping clamp (11') is vertically connected to the piston rod (161) of the opening and closing cylinder. The piston rod (161) of the opening and closing cylinder passes vertically through the clamping clamp bracket (12'). The opening and closing cylinder bracket (17) with an L-shaped longitudinal section is arranged on one side of the clamping clamp bracket (12') opposite to the clamping clamp (11'). The clamping clamp (11') and the clamping clamp bracket (12') are arranged in parallel.

14. The automatic yarn-cutting device for processing wound fibers according to claim 10, characterized in that: The clamping and shearing drive mechanism includes a clamping drive mechanism and a shearing drive mechanism. The shearing tool (2) and the shearing drive mechanism are mounted on the main shaft (9) on one side of the core mold (3), and the clamp (1) and the clamping drive mechanism are mounted on the main shaft (9) on the other side of the core mold (3). When shearing and clamping the fiber bundle (6), the shearing tool (2) is located between the clamp (1) and the core mold (3).

15. The automatic yarn-cutting device for winding fiber processing according to claim 14, characterized in that: The shear drive mechanism includes a second arm (24), the length of which is less than the length of the arm (14); the distance between the shear (2) and the vertex of the core mold (3) is greater than the distance between the clamp (1) and the vertex of the core mold (3).

16. The automatic yarn-cutting device for processing wound fibers according to claim 14, characterized in that: The arm connecting part (15) is sleeved on the main shaft (9) and is freely rotatably connected. The clamp driving mechanism includes a clamp driving assembly (7). The clamp driving assembly (7) includes a first gear (71), a second gear (72), a clamp driving motor (73), and a motor fixing part (74). The first gear (71) is fixedly connected to the arm connecting part (15). The second gear (72) is fixedly connected to the rotating shaft of the driving motor (83). The second gear (72) meshes with the first gear (71). The driving motor (83) is fixed on the motor fixing part (74). The motor fixing part (74) is fixedly connected to the frame (81).

17. The automatic yarn-cutting device for winding fiber processing according to claim 1, characterized in that: The clamping shear drive mechanism includes a support arm connecting part (15), which is sleeved on the main shaft (9) and freely rotatably connected to it. A cylindrical slip ring (152) is fixedly connected to one side of the support arm connecting part (15), and an actuating disk (155) is fixedly connected to the other side of the support arm connecting part (15). The actuating disk (155) is movably sleeved on the main shaft (9). The support arm connecting part (15) is connected to a slip ring connecting frame (153). The main shaft (9) passes through the recess of the slip ring connecting frame (153). The end of the slip ring connecting frame (153) is connected to a propulsion cylinder (154). The propulsion cylinder (154) is fixedly connected to the column of the winding machine frame (81). The clamping shear drive mechanism also includes a clamping shear drive unit (4), which includes a slide rail (46) parallel to the main shaft (9). The slide rail (46) is mounted on the slip ring connecting frame (153). A rodless cylinder (43) parallel to the main shaft (9) is mounted on the side of the slide rail (46). The two ends of the rodless cylinder (43) are fixedly connected to the two ends of the slide rail (46). The rodless cylinder actuator (44) is fixedly connected to the moving block (42). The moving block (42) is also connected to the slider of the slide rail (46). A shift fork (41) is also provided on one side of the moving block (42) near the clamp (1; 1´). A slide groove (411) is provided on the shift fork (41). A pin (131) is provided on the clamp connecting part (13). The pin (131) is adapted to the slide groove (411). The clamping shear drive mechanism also includes a fork drive cylinder (412). The fork drive cylinder (412) is mounted on the side of the moving block (42) via an L-shaped bracket. A fork slide rail (413) parallel to the fork drive cylinder (412) is set on the side of the L-shaped bracket. One end of the fork slide rail (413) is connected to the piston rod of the fork drive cylinder (412), and the other end is connected to the side of the fork (41). The clamping shear drive mechanism also includes a support arm connection locking mechanism (157). The support arm connection locking mechanism (157) includes a locking pin (1573) and a positioning pin (1574). The locking pin (1573) is a spring pin with a locking mechanism bracket (1571). The positioning pin (1574) is disposed on the outer peripheral surface of the support arm connection (15) and extends beyond the support arm connection (15) near the end face of the slip ring (152).

18. A yarn-cutting method based on the automatic yarn-cutting device for processing wound fibers according to any one of claims 2 to 17, characterized in that, Includes the following steps: Step 1: The clamp (1; 1') and the shears (2) enter the winding area; Step 2: The clamp (1; 1') clamps the fiber bundle (6); Step 3: The shearing tool (2) cuts the fiber bundle (6); Step 4: The first mandrel (3´) is moved out of the winding operation area, and the second mandrel (3」) enters the winding operation area; Step 5: The clamp (1; 1') pulls the fiber bundle end (61) to rotate around the second mandrel (3") in the direction of rotation of the second mandrel (3"); Step 6: The fiber supply unit (5) and / or the clamp (1; 1') move the fiber bundle (6) away to avoid the fiber bundle (6) that has not yet rotated around the second mandrel (3"); Step 7: The clamp (1; 1') continues to pull the fiber bundle end (61) to rotate around the second core mold (3") in the direction of rotation of the second core mold (3"), and wind the fiber bundle (6) around the second core mold (3"); Step 8: The clamp (1; 1') releases the clamped fiber bundle (6) and moves it out of the winding operation area.

19. A fiber winding machine, characterized in that, Includes the automatic yarn-cutting device for winding fiber processing as described in any one of claims 1 to 17.

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