WO2023274379A1 - Fiber winding machine and winding method - Google Patents

Abstract

Disclosed in the present invention are a fiber winding machine and a winding method, comprising a moving device, a mandrel, a warp winding head, weft winding heads, and warp supply devices. The warp winding head is arranged around the outer side of the moving device, the mandrel is disposed on the moving device, and the mandrel and the warp winding head are coaxially arranged; the weft winding heads are disposed on the moving devices on the two sides of the warp winding head; and the warp supply devices are disposed on the two sides of the moving device, and are connected to the warp winding head. According to the present invention, the spiral angles of all warps, relative to the axis of the mandrel, on a same layer tiled on a cylindrical surface are the same, so there is no overlap with one another; there is also no mutual overlapping phenomenon between the radially adjacent warp layers on the cylindrical surface, such that the cross bending of fibers is reduced, the mechanical properties of the high-strength fibers can be better exerted, and a winding body is firmer and lighter; and compared with a conventional fiber winding machine, the production efficiency of the winding machine of the present invention can be greatly improved.

Description

A kind of fiber winding machine and winding method technical field

The invention belongs to the technical field of manufacturing high-pressure containers of composite materials, and in particular relates to a fiber winding machine and a winding method.

Background technique

Combustion chamber shells of composite solid rocket motors are manufactured by high-strength fiber winding process. The body is both light and strong. However, the production efficiency of the traditional filament winding process is low. A bundle of yarns is reciprocated and wound many times to cover a longitudinal winding layer. During the winding process, the reciprocating longitudinal yarns will inevitably collide with the previously wound yarns during spiral winding. Overlapping occurs and causes a large number of micro-bends to the fiber bundles, which reduces the effective use of the strength of the fiber material; especially frequent overlapping at the two ends of the head will form a lot of gaps under the yarn, which has relatively low shear and compression resistance. Poor high-strength fibers pose a danger, forcing the addition of other materials for reinforcement at the head, thereby increasing the weight of the shell.

Contents of the invention

The object of the present invention is to provide a fiber winding machine and a winding method to solve the above problems.

In order to achieve the above object, the present invention adopts the following technical solutions to achieve:

In a first aspect, the present invention provides a fiber winding machine, comprising a moving device, a mandrel, a warp winding head, a weft winding head and a warp supply device; the warp winding head is arranged around the outside of the moving device, and the mandrel is arranged on the moving device , and the mandrel and the warp winding head are arranged coaxially; the moving devices on both sides of the warp winding head are provided with weft winding heads; One end is the front connector and the other end is the rear connector.

The further improvement of above-mentioned fiber winding machine is:

The mobile device includes a longitudinal moving car, a first track, a second track, a third track, a main head and an auxiliary head; The headstock is fixedly arranged at one end of the longitudinal moving car, and the auxiliary headstock is arranged on the second track.

The main locomotive is provided with a core mold spin drive device and a connecting flange, and the auxiliary locomotive is provided with a connecting flange. The two connecting flanges are coaxially arranged, and the mandrel is arranged between the two connecting flanges; One end is provided with a front baffle, and the other end is provided with a rear baffle.

The warp winding head includes a yarn guide, the main body of the warp winding head and a wire guide ring; several yarn guides are distributed on the same ring and are set outside the mandrel, and the diameter of the circle surrounded by the yarn guide is larger than that of the cylindrical section of the mandrel. diameter, both sides of the yarn guide are provided with guide rings, and the inner diameter of the guide rings on both sides of the yarn guide is smaller than the diameter of the circle enclosed by the inner side of the yarn guide; the main body of the warp winding head is arranged outside several yarn guides.

A pinch mechanism is installed on both longitudinal sides of the warp winding head; the pinch mechanism includes a set of circular arc hoop flaps and a telescopic mechanism, two sets of circular arc hoop flaps are arranged symmetrically on both longitudinal sides of the warp winding head, and the telescopic mechanism is arranged on the warp winding head. On the main body of the head, the arc hoop flap is connected with the action rod of the telescopic mechanism.

The pinching mechanism is an arc made of several smooth steel pipes whose radius is smaller than that of the mandrel; the telescoping mechanism is an electric push cylinder or an air cylinder.

The weft yarn winding head includes the base of the rotating support device, the longitudinal moving motor, the winding motor, the driving wheel, the bearing ring, the weft yarn tube and the weft yarn guide; the base of the rotating supporting device is installed on the third track on the longitudinal moving car, and the weft yarn winding head The axis is coaxial with the axis of the mandrel; the longitudinal movement motor, driving wheel and winding motor are all arranged on the base of the rotating support device, and the longitudinal moving motor is connected to the driving wheel; the bearing ring is arranged on the base of the rotating support device, and the inner ring of the bearing ring is arranged There are several weft yarn bobbins, each weft yarn bobbin is provided with a weft yarn guide on the side; the winding motor is connected to the bearing ring and is used to drive the inner ring of the bearing ring to rotate.

The bearing ring includes an outer ring, an inner ring and rollers; the inner ring is coaxially arranged inside the outer ring, and a number of rollers are evenly arranged between the outer ring and the inner ring; a branch rod is arranged on the inner ring on the side of the weft yarn drum, and the weft guide wire The damper is set on the branch; the mandrel of each weft yarn drum is equipped with a damper for applying tension to the weft yarn and a sensor for checking weft breakage. The damper is a torque motor, magnetic powder clutch or permanent magnet damper; the guide wire of the weft yarn There is also a sizing device beside the device.

The warp yarn feeding device includes a warp break detector, a warp yarn bobbin and a creel; a number of warp yarn bobbins are arranged on the creel, and a warp break detector is arranged between the creel and the warp winding head.

In a second aspect, the present invention provides a winding method for a filament winding machine, comprising the following steps:

Firstly, adjust the distance from the auxiliary head to the main head, connect the front joint and rear joint of the mandrel of the solid combustion chamber with the connecting flanges of the main head and the auxiliary head respectively, and then evenly distribute the warp yarns from the warp winding head Spread it on the outer circle of the front joint of the mandrel and tie it tightly with cable ties;

The longitudinal shifting car moves forward, and at the same time, the spin-driven motor on the main headstock rotates to wind the warp at a positive helix angle;

When the front head of the mandrel passes through the front of the warp winding head, the pinching mechanism on the front side of the warp winding head will act to compress the diameter of the suspended warp tube to be smaller than the outer diameter of the core, and the warp will start to move after leaving the cylindrical surface of the mandrel. After the calculated spin angle reaches 90°, the longitudinal moving vehicle travels backward in reverse and keeps the speed and direction of the mandrel spin unchanged. When the cylindrical surface of the mandrel is close to the front of the warp winding head, the pinch mechanism resets. Keep the longitudinal speed and spin speed of the mandrel and start to wind the warp at a negative helix angle;

When the front head of the mandrel passes through the back of the warp winding head, the pinching mechanism on the rear side of the warp winding head compresses the diameter of the suspended warp tube to be smaller than the outer diameter of the mandrel. After the warp yarn leaves the cylindrical surface of the mandrel After the spin angle of the mandrel reaches 90°, the longitudinal moving car moves in the reverse direction and keeps the speed and direction of the spin unchanged. When the cylindrical surface of the mandrel is close to the back of the warp winding head, the pinch mechanism resets;

The winding machine repeats the spiral winding according to the above steps to meet the design requirements;

When the warp winding head enters the cylindrical surface of the mandrel, keep the traveling speed of the longitudinal moving trolley, stop the mandrel from spinning, and carry out forward winding;

When going around, the longitudinal moving car parks the main head or auxiliary head next to the warp winding head, then pulls the weft yarn on the weft winding head parked at one end of the auxiliary head or the main head to the mandrel, and starts the weft winding head to move vertically. The moving motor and the winding motor allow the weft winding head to move at a constant longitudinal speed and rotation speed for hoop winding.

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

The helix angle of each warp yarn relative to the mandrel axis in the same layer of the cylindrical surface of the present invention is the same, and there is no mutual overlap on the cylindrical surface; there is no mutual overlap between radially adjacent warp yarn layers on the cylindrical surface. Therefore, the cross-bending of fibers is reduced, the mechanical properties of high-strength fibers can be better exerted, and the winding body is stronger and lighter; the invention can satisfy the requirements of the housing by controlling the helix angle of the cylindrical flat warp yarns relative to the axis of the mandrel. The requirements of bending resistance, torsion resistance and pressure bearing; the production efficiency of the invention can be increased by more than 100 times, which revolutionizes the winding process that could not realize rapid production in the past. The invention has higher degree of automation, more stable quality, and lower manufacturing cost, and is especially suitable for mass and rapid production of highly reliable solid-state combustion chamber shells and bulk composite pipes, electric poles, and wind power blades.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the structural schematic diagram of the top view of the warp winding head fixed winding machine of the present invention;

Fig. 2 is a schematic diagram of the top view mechanism of the warp winding head mobile winding machine of the present invention;

Fig. 3 is the schematic diagram that the warp yarn winding head of the present invention is wound along the axial direction;

Fig. 4 is a structural schematic diagram of a weft yarn winding head of the present invention;

Fig. 5 is a structural schematic diagram of the warp winding head of the present invention;

Fig. 6 is a schematic sectional view of the structure of the warp yarn winding head and the weft yarn winding head of the present invention.

Among them: 1-warp winding head, 2-weft winding head, 3-track, 4-main head, 5-sub head, 6-first track, 7-second track, 8-third track, 9-longitudinal shift Car, 10-front baffle, 11-rear baffle, 12-front joint, 13-rear joint, 14-connecting flange, 15-front head, 16-rear head, 17-slant winding warp yarn, 18 -Reverse oblique warp winding, 19-, 20-warp break detector, 21-warp bobbin, 22-creel, 23-winding machine base, 24-warp winding trolley, 25-warp winding layer, 26-weft winding layer, 27-Pinch ring valve, 28-Wire guide, 29-Warp yarn, 30-Weft yarn, 31-Wire guide ring, 32-Outer ring, 33-Inner ring, 34-Roller, 35-Wire guide, 36- Damper, 37-weft bobbin, 38-rod, 39-mandrel, 40-driving wheel, 41-longitudinal motor, 42-winding motor, 43-filament guide, 44-axial warp, 45-top Ratchet, 46-bottom ratchet.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "horizontal", "inside" etc. is based on the orientation or positional relationship shown in the drawings , or the orientation or positional relationship that the product of the invention is usually placed in use is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed in a specific orientation and operation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, when the term "horizontal" appears, it does not mean that the part is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the embodiments of the present invention, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be interpreted in a broad sense, for example, It can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The present invention is described in further detail below in conjunction with accompanying drawing:

Example 1

Please refer to Fig. 1, Fig. 3～Fig. 6, a kind of fiber winding machine that the present invention proposes, comprises vertical moving car 9, warp yarn winding head 1, weft yarn winding head 2 and computer control system, warp yarn winding head 1 comprises a group of The yarn guide 28 on the same ring, each yarn guide 28 has a warp yarn 29 to pass through, the warp yarn at the rear end of the yarn guide 28 is connected to the warp yarn barrel 21, and the warp yarn at the front end of the yarn guide 28 is wound on the mandrel 39, the diameter of the circle that the wire guide 28 surrounds is slightly larger than the diameter of the mandrel 39 cylindrical sections; the warp winding head 1 is equipped with a pinch mechanism on both sides in the longitudinal direction, and the pinch mechanism on each side is formed by several evenly distributed inner sides as circles. The arc hoop flap 27 is composed of a telescopic mechanism, and the telescopic mechanism can be synchronously telescopic along the radial direction;

The upper part of the longitudinal moving car 9 includes two parts, the main head 4 and the auxiliary head 5. The bottom of the main head 4 is the longitudinal movement mechanism of the longitudinal moving car, which is responsible for the longitudinal moving of the longitudinal moving car 9 attached to the first rail 6 and the external longitudinal movement. The driving device is associated, the upper part of the main head 4 is the mandrel 39 spin drive device and the connecting flange 14, the auxiliary head 5 is attached to the second rail 7 on the longitudinal moving car 9, and its bottom is independently longitudinally moved by a lockable Mechanism, the upper part is coaxial with the connecting flange 14 of the main headstock 4 and can rotate freely;

The weft yarn winding head 2 is a surrounding device that rotates around the core 39 molds, and the yarn of the weft yarn bobbin 37 carried thereon can be wound on the core mold 39. Side, stops at main locomotive 4 and auxiliary locomotive 5 side when not acting.

The warp and weft are made of high-strength fiber filament bundles such as carbon fiber, aramid fiber, and PBO. During work, at first the mandrel 39 is installed on the longitudinal moving car 9, the ends of the warp are evenly distributed on the outer circumference of the front joint 12 of the mandrel and tied firmly with ropes, the warp winding head 1 is aligned with the initial zero position, and then the control The system controls the longitudinal movement driving device of the longitudinal moving vehicle 9 and the spin driving device of the mandrel according to the pre-designed program, so that the mandrel 39 performs a linear + rotating helical movement relative to the warp winding head 1. During the movement, the warp winding head 1 is The warp yarns will be spread to the entire surface of the mandrel 39 in the form of spirals; one layer is basically full, and when the cylindrical section of the mandrel 39 leaves the warp winding head 2 for a certain distance, the pinch mechanism moves inward to compress the warp yarns to form a diameter The circle that is less than the diameter of the mandrel 39 cylindrical sections makes the warp thread close to the cylindrical surface, then the mandrel 39 rotates about 1/4 circle around its own axis while continuing to maintain the longitudinal movement of the original direction, and the vertical moving car 9 is reversed along the longitudinal direction. Movement, the mandrel 39 rotates about 40° and the pinching mechanism resets, and the outward action is separated from the warp yarn, and the diameter of the circle surrounded by the warp yarn is restored to slightly larger than the diameter of the mandrel cylinder section; after reciprocating several times in the above-mentioned manner, The end of the cylinder section at one end of the mandrel 39 is aligned with the weft yarn winding head 2, draws and binds the weft yarn 30 on the mandrel 39, then controls the mandrel 39 to advance at a lower longitudinal speed, and the weft yarn winding head 2 The inner ring 33 rotates at a relatively high rotational speed for circumferential winding of the cylindrical section.

The warp yarn winding head 1 and the warp yarn creel 22 in the present embodiment are fixed on the ground, and other parts of the winding machine are all installed on the longitudinal moving vehicle 9 of the first rail 6 that is vertically set up, and the main headstock 4 is fixed on the longitudinal On the moving car 9, there is also a third track 8 for the longitudinal movement of the weft yarn winding head and a second track 7 for the longitudinal movement of the auxiliary head on the longitudinal moving car 9. The two weft yarn winding heads share the same weft yarn winding head 2 and are usually parked on the longitudinal moving car 9. Next to the main headstock 4 and the auxiliary headstock 5 on both sides.

The pinch rings that warp yarn winding head 1 both sides are provided with can be made into a kind of several sub-lobes 27 with a diameter slightly smaller than the cylindrical end diameter of the mandrel, which can be quickly disassembled and assembled by manual or manipulator. The inner diameter of the wire guide ring 31 on both sides of the wire guide 28 of the warp winding head 1 is slightly smaller than the diameter of the circle surrounded by the inside of the yarn guide 28, and the warp yarn 29 first contacts with the wire guide ring 31 after passing through the wire guide 28. The radial warp yarns will spread out on the wire guide ring 31 and resist each other with the adjacent warp yarns to form a thin-walled ring with uniform thickness; the inside of the wire guide ring 31 is a hollow structure, and the surface of the yarn passing through is evenly distributed with glue spray holes , the inner through hole of the wire guide ring 31 is connected with the metering pump through the high-pressure pipe, and the amount of glue spraying is controlled by the computer according to the linear velocity of the warp yarn 29.

In order to improve automation, the pinching mechanism installed on both sides of the warp winding head 1 is composed of a plurality of segmented arcs made of smooth steel pipes with a radius less than the radius of the mandrel 39 and an electric push cylinder or cylinder that controls its expansion and contraction. Can make warp yarn press 29 tightly on the cylindrical surface of mandrel 39 when wrapping head.

The weft yarn winding head 2 is installed on a base with a rotating support device, and the base of the rotating support device is installed on the ad hoc third track 8 on the longitudinal moving vehicle 9, the axis of the weft yarn winding head 2 is coaxial with the axis of the mandrel 39, The base base of the rotary support device is provided with a vertical movement motor 41 and a winding motor 42, the winding motor 42 can drive the inner ring 33 of the weft winding head 2 to rotate, and the vertical movement motor 41 drives the weft winding head 2 to move longitudinally. Several weft bobbins 37 are evenly distributed on the inner ring 33 of the weft yarn winding head 2, and each mandrel on which the weft bobbin 37 is installed is equipped with a damper 36 for applying tension to the weft yarn and a sensor for checking weft breakage. The damper 36 can adopt Torque motor and magnetic powder clutch can also be selected for use without power-consuming permanent magnet damper; the weft yarn on the yarn bobbin passes through the wire guide 35 and surrounds above the mandrel during hoop winding. There is a sizing device next to the yarn guide of the weft yarn, which can apply an appropriate amount of glue to the weft yarn when the weft yarn is pulled out.

During the winding operation, at first adjust the distance from the auxiliary headstock 5 to the main headstock 4, connect the front joint 12 and the rear joint 13 of the mandrel 39 of the solid combustion chamber with the connecting flanges of the main headstock 4 and the auxiliary headstock 5 respectively, and then connect the The radially distributed warp yarns from the warp yarn winding head 1 are evenly distributed on the outer circle of the front joint 12 and tied tightly with cable ties;

Then start the control system, and wind according to the program (for the convenience of description, the top of Figure 1 is used as the front, and the bottom is used as the rear):

a) The longitudinal moving car 9 advances forward, while the spin drive motor on the main headstock 4 rotates to wind the warp at a positive helix angle,

b) After the front end head 15 of the mandrel 39 passes through the front of the warp winding head 1, the pinching mechanism on the front side of the warp winding head 1 acts to compress the diameter of the suspended warp tube to less than the outer diameter of the core 39. After leaving the core mold 39 cylindrical surface, the spin angle counted after reaching about 90 °, the longitudinal moving car 9 reverses and advances backward and keeps the speed and direction of the core mold 39 spins constant, until the cylindrical surface of the core mold 39 When approaching the front of the warp winding head 1, the pinch mechanism resets, and starts to wind the warp at a negative helix angle;

c) When the front end 15 of the mandrel 39 passes through the rear of the warp winding head 1, the pinching mechanism on the rear side of the warp winding head will compress the diameter of the suspended warp tube to less than the outer diameter of the mandrel, and the warp will automatically leave After the spin angle behind the cylindrical surface of the mandrel reaches about 90°, the longitudinal moving car 9 travels in reverse and keeps the speed and direction of the spin unchanged. When the cylindrical surface of the mandrel approaches the rear of the warp winding head 1, the pinch mechanism reset;

d) The winding machine can repeat a), b), and c) to continue spiral winding to the design requirements;

e) After the warp yarn winding head 1 enters the cylindrical surface of the mandrel, keep the traveling speed of the longitudinal moving trolley, stop the mandrel from spinning, and carry out forward winding;

f) When it is necessary to circle around, the longitudinal moving car 9 parks the main headstock 4 or the auxiliary headstock 5 on it next to the warp winding head 1, and then pulls the weft yarn 30 on the weft winding head 2 parked at one end of the auxiliary headstock 5 or the main headstock 4 On the mandrel 39, start the weft yarn winding head 2 longitudinal movement motor 41 and the winding motor 42, and allow the weft yarn winding head to move at a constant longitudinal movement speed and rotation speed to perform hoop winding.

Example 2

Please refer to Fig. 2 to Fig. 6, a kind of fiber winding machine proposed by the present invention includes machine base 23, main head 4, auxiliary head 5, warp winding trolley 24, weft winding head 2 and computer control system. The support 23 is fixed on the ground, and the fixed main headstock 4 and the auxiliary headstock 5 that can move longitudinally and lock on the track 7 on the support 23 are installed above the support 23; A set of third rails 8 for longitudinal movement of the weft yarn winding head 2 that usually stays next to the main and auxiliary locomotives is specially provided; the warp yarn winding head 1 and the creel 22 are installed on the warp yarn winding trolley 24, and the warp yarn winding trolley 24 is located on the winding machine On the parallel tracks 3 on both sides of the support 23, the warp yarn winding dolly 24 is provided with a traveling drive servo motor, which can be controlled by a computer to drive the warp yarn winding dolly 23 to move longitudinally; The rotating shaft is an independent damper with tube diameter compensation to ensure that the drawn warp yarn has a constant tension; the warp yarn winding head 1 includes a group of yarn guides 28 distributed on the same ring, each guide yarn Device 28 all has a warp yarn 29 to pass through, and the warp yarn at the rear end of the yarn guide 28 is connected to the warp yarn barrel 21, and the warp yarn at the front end of the yarn guide 28 is wound on the mandrel 39, and the circle diameter that the yarn guide 28 surrounds is slightly larger than the mandrel The diameter of 39 cylindrical sections; The top of main headstock 4 is mandrel spin driving device and connector, and the top of auxiliary headstock 5 has a coaxial and freely rotatable connector with the mandrel connector of main headstock; Two groups of pinching mechanisms are arranged on both sides of 1, and the pinching mechanisms on each side are composed of several evenly distributed inner arc-shaped pinching rings 27 and telescopic mechanisms, which can be synchronously stretched in the radial direction; Winding head 2 is a surrounding device that can rotate around mandrel 39, and the yarn carried by weft yarn bobbin 37 on it can be wound on mandrel 39, and weft yarn winding head 2 is set up on the both sides of warp yarn winding head 1, without Stop at the side of the main locomotive 4 or the auxiliary locomotive 5 during the action, leaving a working space for the warp winding head 1;

The front and rear joints of the mandrel 39 are docked with the connecting flanges of the main headstock 4 and the auxiliary headstock 5 and installed on the winding machine, the ends of the warp yarns are evenly distributed on the outer circumference of the front joint 12 of the mandrel 39 and tied firmly with ropes, and the warp yarns are wound The head 1 is aligned with the initial zero position, and then the control system controls the traveling drive servo motor on the warp winding trolley 24 to drive the longitudinal movement of the warp winding trolley 24 according to the pre-designed program, and controls the mandrel spin driving device on the main head 4 to make The mandrel 39 rotates, starting the helical winding of the warp yarns. After the warp yarn winding head 1 leaves the cylindrical section of the mandrel 39, the pinching mechanism moves inward, and the warp yarn is compressed to form a circle whose diameter is smaller than the diameter of the mandrel's cylindrical section, so that the warp yarn is closely attached to the cylindrical surface, and then the mandrel 39 continues to maintain its original shape. Rotate about half a circle around its own axis while moving longitudinally in the direction, the pinch mechanism moves outwards and breaks away from the warp yarn, and then the mandrel will move in the opposite direction along the longitudinal direction; Align the weft yarn winding head 2 at the top, draw the weft yarn 30 and tie it tightly on the mandrel 39, then the weft yarn winding head 2 travels at a lower longitudinal speed, and the inner ring 33 rotates at a higher speed to carry out the circumferential rotation of the cylindrical section. winding.

Warp yarn 29 and weft yarn 30 all adopt high-strength fiber filament bundles such as carbon fiber, aramid fiber, PBO.

The weft winding head 2 is installed on a rotating support device, and the base of the rotating support device is installed on the longitudinal track 3 of the ad hoc weft winding head 2 on the winding machine base 23. Coaxial, the base of the rotating support device is provided with a vertical movement motor 41 and a winding motor 42, which can drive the weft yarn winding head 2 to move longitudinally and make the inner ring 33 carrying the weft yarn barrel rotate around its axis, the inner ring of the weft yarn winding head 2 Several weft yarn bobbins 37 are evenly distributed on the top, and each weft yarn bobbin 37 is equipped with a damper 36 for applying tension to the weft yarn 30 and a sensor for checking weft breakage. Device 35 surrounds above mandrel 39. A sizing device is provided beside the wire guide 35, which can smear an appropriate amount of glue to the weft yarn 30 when the weft yarn is pulled out.

During the winding operation, first adjust the distance between the auxiliary headstock 5 relative to the main headstock 4, connect the front joint 12 and the rear joint 13 of the solid combustion chamber mandrel 39 with the connecting flanges of the main headstock 4 and the auxiliary headstock 5 respectively, and then connect the The radially distributed warp yarns from the warp yarn winding head are evenly distributed on the outer circle of the front joint 12 and tied tightly with cable ties;

Then start the control system, and wind according to the program (for the convenience of description, the top of Figure 1 is used as the front, and the bottom is used as the rear):

a) The warp yarn winding trolley 24 advances backward, while the spin drive motor on the main headstock 4 rotates to wind the warp yarn at a positive helix angle,

b) When the front of the warp winding head 1 passes through the rear end cap 16 of the mandrel, the pinching mechanism on the front side of the warp winding head 1 acts to compress the diameter of the suspended warp tube to less than the outer diameter of the mandrel 39, and the warp yarn 29 After leaving the cylindrical surface of mandrel 39, the spin angle counted after reaching about 90 °, warp yarn winding dolly 24 reverses and advances forward and keeps the speed and direction of mandrel 39 spins constant, until warp yarn winding head 1 When approaching the cylindrical surface of the mandrel 39, the pinching mechanism resets, and the negative helix angle begins to wind the warp yarn;

c) After the rear edge of the warp winding head 1 passes through the front head 15 of the mandrel 39, the pinching mechanism action on the rear side of the warp winding head 1 compresses the diameter of the suspended warp tube to less than the outer diameter of the mandrel 39, and the warp yarn After the spin angle of leaving the cylindrical surface of the mandrel 39 reaches about 90 °, the warp yarn winding dolly 24 reversely advances and keeps the speed and direction of the mandrel 39 spins constant. After the spin angle reaches about 120°, the pinch mechanism resets;

d) The winding machine can repeat a), b), and c) to continue spiral winding to the design requirements;

e) After the warp winding head 1 enters the cylindrical surface of the mandrel, keep the speed of the warp winding dolly, stop the mandrel 39 from spinning, and wind in the forward direction;

f) When winding is required, park the warp winding trolley 24 on one side of the main head 4 or the auxiliary head 5, then place the weft winding head 2 parked at the other end on the starting position and pull the weft yarn 30 on it to the core On the mold 39, start the longitudinal moving motor 41 and the winding motor 42 of the weft winding head 2, and allow the inner ring 33 of the weft winding head 2 to move at a constant longitudinal speed and rotation speed to perform circumferential winding.

The invention can be used not only for weaving high-pressure container shells, but also for producing missile launching tubes, wings, large-scale wind blades, utility poles and large-scale high-pressure pipelines of composite materials.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

A kind of fiber winding machine, it is characterized in that, comprises moving device, mandrel (39), warp yarn winding head (1), weft yarn winding head (2) and warp yarn feeding device; Warp yarn winding head (1) is arranged around moving device Outside, mandrel (39) is arranged on the moving device, and mandrel (39) and warp yarn winding head (1) are coaxially arranged; Warp yarn winding head (1) both sides of the moving device are all provided with weft yarn winding head (2 ); the warp yarn feeding device is arranged on both sides of the moving device, and the warp yarn feeding device is connected to the warp yarn winding head (1); one end of the mandrel (39) is a front joint (12), and the other end is a rear joint (13). A kind of filament winding machine according to claim 1, it is characterized in that, moving device comprises vertically moving car (9), first track (6), second track (7), third track (8), main headstock (4) and the auxiliary headstock (5); the longitudinal moving vehicle (9) is arranged on the first track (6), and the longitudinal moving vehicle (9) is provided with the second track (7) and the third track (8); the main The headstock (4) is fixedly arranged on one end of the longitudinal moving car (9), and the auxiliary headstock (5) is arranged on the second track (7). A fiber winding machine according to claim 2, characterized in that, the main head (4) is provided with a mandrel spin drive device and a connecting flange (14), and the auxiliary head (5) is provided with a connecting flange (14), two connecting flanges (14) are coaxially arranged, and the mandrel (39) is arranged between the two connecting flanges (14); one end of the first track (6) is provided with a front baffle (10) , the other end is provided with a tailgate (11). A kind of filament winding machine according to claim 1, is characterized in that, warp thread winding head (1) comprises thread guide (28), warp thread winding head main body and guide thread ring (31); Several thread guides (28) Distributed on the same ring, and sleeved on the outside of the mandrel (39), the diameter of the circle surrounded by the wire guide (28) is greater than the diameter of the cylindrical section of the mandrel (39), and both sides of the wire guide (28) are provided with Wire guide ring (31), the inner diameter of the wire guide ring (31) on both sides of the wire guide (28) is less than the diameter of the circle surrounded by the inside of the wire guide (28); outside. A kind of fiber winding machine according to claim 4, it is characterized in that, the longitudinal sides of warp yarn winding head (1) are equipped with pinching mechanism; pinching mechanism comprises a group of circular arc hoop flaps (27) and telescopic mechanism, Two groups of arc hoop flaps (27) are symmetrically arranged on the longitudinal sides of the warp yarn winding head (1), and the telescopic mechanism is arranged on the warp yarn winding head main body, and the arc hoop flaps (27) are connected with the action rod of the telescopic mechanism. A kind of fiber winding machine according to claim 5, characterized in that, the pinching mechanism is a circular arc made of several smooth steel pipes with a radius smaller than the radius of the mandrel (39); cylinder or cylinder. A kind of fiber winding machine according to claim 1, characterized in that, the weft yarn winding head (2) comprises a rotating support device base, a longitudinal moving motor (41), a winding motor (42), a driving wheel (40), a bearing ring , weft yarn bobbin (37) and weft yarn guide (35); the base of the rotating support device is installed on the third rail (8) on the longitudinal moving vehicle (9), and the axis of the weft yarn winding head (2) is in contact with the mandrel (39 ) axes are coaxial; the longitudinal movement motor (41), the driving wheel (40) and the winding motor (42) are all arranged on the base of the rotating support device, and the longitudinal movement motor (41) is connected to the driving wheel (40); the bearing ring is arranged on the rotating On the base of the supporting device, several weft yarn tubes (37) are arranged on the inner ring of the bearing ring, and a weft yarn guide (35) is provided on the side of each weft yarn tube (37); the winding motor (42) is connected to the bearing ring for The inner ring of the drive bearing ring rotates. A kind of filament winding machine according to claim 7, is characterized in that, bearing ring comprises outer ring (32), inner ring (33) and roller (34); Inner ring (33) is coaxially arranged on outer ring (32) ) inside, a number of rollers (34) are evenly arranged between the outer ring (32) and the inner ring (33); a branch (38) is arranged on the inner ring of the side of the weft yarn drum (37), and the weft yarn guide (35 ) is arranged on the branch bar (38); the mandrel of each weft yarn bobbin (37) is all equipped with a damper (36) for applying tension to the weft yarn and a sensor for checking weft breakage, and the damper (36) is a torque motor, a magnetic powder Clutch or permanent magnet damper; a sizing device is also set beside the weft yarn guide. A kind of fiber winding machine according to claim 1, it is characterized in that, warp yarn feeding device comprises broken warp detector (20), warp yarn bobbin (21) and creel (22); Creel (22) is provided with Warp breakage detectors (20) are arranged between several warp yarn bobbins (21), the creel (22) and the warp yarn winding head (1). A kind of fiber winding machine according to any one of claims 1 to 9, characterized in that, a winding method of a fiber winding machine, comprising the following steps: First adjust the distance from the auxiliary headstock (5) to the main headstock (4), connect the front joint (12) and the rear joint (13) of the solid combustion chamber mandrel (39) to the main headstock (4) and the auxiliary headstock (5) respectively. ) of the connecting flange butt joint, and then the warp yarns from the radial distribution of the warp yarn winding head (1) are evenly distributed on the outer circle of the front joint (12) of the mandrel and tied tightly with cable ties; The longitudinal moving car (9) moves forward, and at the same time, the spin-driven motor on the main head (4) rotates to wind the warp at a positive helix angle; When the front head (15) of the mandrel (39) passes through the front of the warp winding head (1), the pinching mechanism on the front side of the warp winding head (1) acts to compress the diameter of the suspended warp tube to be smaller than the core (39 ) of the outer diameter, after the warp yarn has reached 90° from the angle of spin counted from the cylindrical surface of the mandrel (39), the longitudinal moving car (9) reversely advances backward and keeps the mandrel (39) from spinning. Speed and direction are constant, and when the cylindrical surface of mandrel (39) is close to the front of warp yarn winding head (1), the pinching mechanism resets, and the longitudinal movement speed and spin speed of mandrel are kept to start negative helical angle winding warp yarn; After the front head (15) of the mandrel (39) passes through the back of the warp winding head (1), the pinching mechanism action on the rear side of the warp winding head compresses the diameter of the suspended warp tube to less than the outer diameter of the mandrel. After the spin angle of the warp thread reaches 90° after leaving the cylindrical surface of the mandrel, the longitudinal moving car (9) moves in reverse and keeps the speed and direction of the spin constant, and when the cylindrical surface of the mandrel is close to the warp winding head (1 ) when the pinch mechanism is reset; The winding machine repeats the spiral winding according to the above steps to meet the design requirements; When the warp winding head (1) enters the cylindrical surface of the mandrel, keep the traveling speed of the longitudinal moving trolley, stop the mandrel from spinning, and carry out forward winding; When going around, the longitudinal moving car (9) parks the main headstock (4) or the auxiliary headstock (5) on it beside the warp winding head (1), then parks the auxiliary headstock (5) or the main headstock (4) at one end The weft yarn (30) on the weft yarn winding head (2) is drawn onto the mandrel (39), and the weft yarn winding head (2) longitudinal movement motor (41) and winding motor (42) are started to allow the weft yarn winding head to Longitudinal movement speed and spin rotation speed movement, carry out hoop winding.

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