RU2636061C1 - Spiral winding device for production line for producing composite reinforcement - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: in a spiral winding device for a production line for producing composite reinforcement, including a creel with roving spools, a levelling device, an annealing chamber, an impregnating bath with a tensioner, a squeezing device, a forming unit, a spiral winding device of two units arranged one behind the other, successively mounted, each of which includes a winding tow coil with a yarn guide, polymerization chambers, a pulling device, a cutting unit and a winding unit, each spiral winding unit is made in the form of a pipe of circular cross-section for advancing the tow and of a length not less than one and a half lengths of the winding tow coil installed in bearings, the pipe on the one side is connected to an electric motor drive through a chain transmission, and at the opposite end of the pipe, there is a yarn guide with an eyelet at a distance C from the pipe axis, where Rmax≤C≤Rmax+50, where Rmax is the maximum packing radius of the winding tow, and the winding tow coil is fixed coaxially with the main pipe on bearings mounted on the outer pipe surface with the possibility of free rotation, and is rigidly connected to a half-coupling with the ability to be connected to the other half-coupling located on the main pipe, the main pipes of the winding units being located at a distance C≤H≤C+20 mm from each other.

EFFECT: increasing the composite reinforcement length due to increasing the volume of packages with a winding tow on two coils and the continuity of winding the winding tow while improving the quality of the composite reinforcement by reducing the coil rise angle of the winding tow while reducing the noise and vibration of the winding mechanism of the production line and reducing the number of line stops, which leads to increased productivity.

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Description

The invention relates to production lines for the manufacture of reinforcing elements for reinforcing building structures, namely, devices for spiral winding of a winding bundle in the manufacture of composite reinforcement.

Composite reinforcement is obtained from fiberglass roving with several coils, which are impregnated with a two-component epoxy resin. Then the rovings are collected in a bundle (the diameter of the composite reinforcement depends on the number of rovings). The resulting bundle is wrapped in a spiral winding with a winding bundle, which forms a bundle of a fixed diameter, which is then pulled into the polymerization chamber, then the composite reinforcement cools, dried, cut into sections of the required length and wound into convenient bays. Such packaging of composite reinforcement gives it compactness in storage and transportation.

The prior art technological line for the manufacture of composite reinforcement, including sequentially installed creel with roving bobbins, leveling device, annealing chamber, impregnating bath with a tension device, squeezing device, molding unit, spiral winding unit, fiber twisting prevention unit, polymerization chambers, pulling device, cutting and winding units, each of the two nodes of the spiral winding consists of two coils of a winding bundle located on the disk, which mounted on a sleeve on the cylindrical surface of which longitudinal T-grooves of various lengths are made, the number of grooves corresponding to the number of coils of the winding cord. The longitudinal component of the T-grooves is placed on the cylindrical surface of the sleeve, oriented parallel to the axis of the sleeve and originates from one of the ends of the sleeve, it is designed to refuel the winding bundle. The size of the T-groove is determined by the pitch of the spiral winding of the reinforcement. (RF patent No. 2389853, IPC E04C 5/07, published on 05/20/2010.)

The disadvantage of this production line is the noise and vibrations of the winding unit due to the installation of coils with a winding bundle on both sides of the reinforcement, the small length of the composite reinforcement at the outlet due to the small volume of packaging with the winding bundle and low productivity due to frequent stops of the line to install new packages and dressing of bundles.

The technical result of the proposed solution is to eliminate these drawbacks, namely: increasing the length of the composite reinforcement by increasing the volume of packages with a winding bundle on two coils and the continuity of winding the winding bundle while improving the quality of composite reinforcement by reducing the fragility of the rise of the turns of the winding bundle while reducing noise and vibration of the winding mechanism assembly of the production line and reducing the number of line stops, which leads to increased productivity.

This object is achieved by the fact that in the spiral winding device of the production line for the production of composite reinforcement, including serially installed creel with roving bobbins, leveling device, annealing chamber, impregnating bath with a tension device, squeezing device, molding unit, spiral winding device of two nodes, installed one after the other and each of which includes a coil of a winding bundle with a yarn guide, polymerization chambers, a pulling device, cutting units and shears each node of the spiral winding is made in the form of a pipe of circular cross section with an opening for promoting the bundle and a length of at least one and a half lengths of the coil of the winding bundle, which is installed in the bearings, on the one hand through a chain transmission the pipe is connected to the motor drive, and at the opposite end of the pipe a yarn guide with an eye is placed at a distance C from the axis of the pipe, where Rmax≤C≤Rmax + 50, where Rmax is the maximum packaging radius of the winding bundle, and the coil of the winding bundle is mounted coaxially with the main pipe on the bearings, mounted on the outer surface of the pipe with the possibility of free rotation, and is rigidly connected to the coupling half with the possibility of connecting with another coupling half located on the main pipe, the main pipes of the winding nodes are located at a distance of C≤H≤C + 20 mm from each other.

Significant differences of the created device is the mutual arrangement of the details of each of the winding nodes, namely: when the elements of the device are known, only their combined use and mutual arrangement ensures the achievement of the claimed technical result.

The spiral winding device of the technological line for the production of composite reinforcement consists of two identical spiral winding nodes, including the main pipes 1 and 17, located on the same axis with a distance between them H within C + 20 mm ≥ H≥C, where C is the distance from the eye yarn guide to the axis of the main pipe.

The distance H is selected from the following considerations. The point of incidence of the winding bundle is separated from the coordinate of the yarn guide with the eye at a distance L = С tgα,

where C is the distance from the eye of the yarn feeder to the axis of the main pipe, mm;

α is the angle of rise of the spirals, degrees.

Based on the limiting value of the angle of elevation of the turns α = 45 °, we obtain L = C.

Thus, H≥C. On the other hand, an increase in the distance H between nodes I and II is undesirable and leads to an increase in the free length of the tow 2 and to an increase in its deflection (lateral movement) during operation. Therefore, we limit the distance H to the value of N ≤ C + 20 mm.

Therefore, C Н H С C + 20 mm.

In FIG. 1 shows a schematic solution of a spiral winding device for a production line for the production of composite reinforcement,

Where

I and II - nodes of spiral winding;

1, 17 - the main pipe;

2 - harness;

3, 4 18, 19 - bearings for the main pipe;

5, 20 - mechanical transmission;

6, 21 - engines;

7, 22 - coils;

8, 9 23, 24 - bearings for the coil with a winding harness;

10, 25 - yarn feeders with an eye;

11, 29 - packages of a winding cord;

12 - winding harness.

The coupling consists of two coupling halves:

13, 26 - coupling halves rigidly connected to the coil;

14, 27 - coupling halves connected to the main pipe 1, 17 with a key connection with the possibility of axial movement along the axis of the main pipe 1, 17;

15, 28 - switches;

16 - filing the winding of the tow to the coil.

Each of the spiral winding nodes, for example, node 1, of the production line for the production of composite fittings consists of a main pipe 1 with an inner diameter of at least 22 mm, which is fixed in bearings 3, 4 and inside of which there is a bundle 2, for example, of fiberglass. The pipe 1 is driven into rotational motion through a mechanical gear 5 from an electric motor 6.

The coil 7 is mounted on bearings 8, 9 with the possibility of rotation relative to the pipe 1. On the pipe 1 is rigidly installed yarn guide 10 with an eye. The distance C from the eye of the yarn feeder to the axis of the pipe is determined by the dependence Rmax≤C≤Rmax + 50 mm, where Rmax is the maximum packaging radius 11.

Each of the nodes contains a coupling mounted on the side opposite to the thread guide with an eye 10 relative to the spool 7 with the package 11 of the winding cord 12, consisting of a coupling half 13 connected to the coil 7, and a coupling half 14 connected to the main pipe 1 by key coupling with the possibility of axial movement by switch 15. Switch 15 may be in two positions. The first position: the coupling halves 13, 14 are engaged and the coil 7 is rigidly connected to the main pipe 1. The second position: the coupling half 14 is disengaged from the coupling half 13, which provides free rotation of the coil 7 relative to the main pipe 1.16 - feeding the bundle winding to the coil.

The work of each of the two nodes of the spiral winding of the technological line for the production of composite reinforcement includes 3 modes, and the device operates in 4 stages (see table)

1 mode. Winding a winding rope to a reel.

The supply 16 of the winding cord 12 to the coil 7 (22) for forming the package 11 (29) is carried out with a package radius not exceeding the value C, where C is the distance from the eye of the thread guide 10 (25) to the axis of the main pipe 1 (17).

In this mode, the switch 15 (28) is in the position when the coupling halves 13, 14 (26, 27) are engaged. In this case, rotation from the engine 6 (21) through the mechanical transmission 5, (20) is transmitted to the main pipe 1 (17) and through the coupling halves 13, 14 (26, 27) to the coil 7 (22) with the package 11 (29). As a result, the winding bundle 12 is wound on a coil 7 (22) until a predetermined winding radius Rmax is reached. Then the engine 6 is stopped.

2 mode. Preparation for the operating mode.

In this mode, the winding thread 12 is tucked into the eye of the yarn guide 10 (25), the coupling halves 13, 14 (26, 27) are disengaged by the switch 15, (28). The device is ready for 3 modes.

3 mode. Work winding site.

In mode 3, the coupling halves 13, 14 (26, 27) are disengaged. The tow 2 moves inside the main pipe 1 (7) at a constant speed. The main pipe 1 (7), together with a thread guide fixed to it with an eye 10 (25), is driven into rotation from an electric motor 6 (21) through a mechanical transmission, such as a chain 5 (20). The winding cord 12 is wound from the outer surface of the package 11 (29), passes through the eye of the yarn guide 10 (25) and wound around the bundle 2.

In the process of operation of the device, the tow 2 moves inside the main pipe 1 (17) with a constant speed V, and the main pipe 1 (17) rotates together with a thread guide attached to it with an eye 10 (25) with an angular velocity ω.

A winding rope 12 is wrapped around a moving rope 2, forming a spiral on its surface, which is characterized by the diameter of the spiral d, the pitch of the turns of the spiral h and the angle of elevation of the turns of the spiral α. The diameter of the spiral d is equal to the diameter of the bundle 2. The pitch of the turns h is obtained from the ratio

Where

h is the pitch of the spiral turns, mm,

V is the speed of the tourniquet 2, mm / s,

ω is the angular velocity of rotation of the main pipe 1 (17), rad / sec.

The angle of elevation of the turns of the spiral α is determined from the expression

Where

α is the angle of rise of the spirals, degrees,

d is the diameter of the spiral, mm

Thus, changing the relationship between V and ω, we obtain different values of the pitch of the spiral turns h or, for given values of V (from technological requirements) and h (based on the requirements for composite reinforcement), we obtain the necessary angular velocity of rotation of the main pipe 1 (17)

A winding bundle 12 wrapping around a bundle 2 moves through the eye of the yarn feeder 10 (25) with a speed V _w , which is determined by the addition of the longitudinal speed and the peripheral speed of the winding bundle

where V _W - the consumption rate of the winding cord, mm / s

A winding bundle 12 passing through the eye of the yarn feeder 10 (25) with a speed of V _w carries away a package 11 (29) with a coil 7 (22) and gives it an additional angular velocity relative to the main pipe 1 (17)

Where

ω _add - the angular velocity of the coil 7 (22) with the package 11 (29) relative to the main pipe 1 (17), rad / sec,

V _W - the speed of consumption of the tow, mm / s,

R is the radius of the package 11 (29), mm

Thus, the total angular velocity of the coil 7 (22) with the package 11 (29) will be:

ω _Pak = ω + ω _add .

where ω _Pak is the angular velocity of the coil 7 (22) with the package 11 (29), rad / sec.

The operation of the device for spiral winding the bundle occurs sequentially in 4 stages.

In the production line, in the manufacture of composite reinforcement, after the beam passes from the rovings through the molding unit, the latter enters the spiral winding unit at a constant speed.

At the first stage, the spiral winding of the bundle 2 is carried out by the II node, and the I node is in mode 1, when the winding bundle 12 is wound on the coil 7.

Upon reaching the packaging radius in the I node of the maximum value of R _{max, the} device goes to stage 2. At the same time, the spiral winding of the bundle 2 continues to be carried out by the II node of the yarn guide with an eye 25 around the bundle 2, forming a spiral on the surface of the bundle 2, passing section H (the distance between the nodes I and II), and the node I switches to mode 2 in preparation for the operating mode.

When the winding bundle 12 ends on the coil 22 of node II, the device proceeds to the 3rd stage of operation, namely: the operator inserts the winding bundle 12 into the yarn guide with the eye 10 of node I and the winding of the bundle begins to be executed by node I. In this case, it is possible to obtain a section of composite reinforcement which winding is made by two winding bundles from I and II nodes, which does not reduce the quality of the resulting reinforcement. When this II node goes into 1 mode of operation, when there is winding the winding cord 12 on the coil 22.

Upon reaching the radius of the package 29 in the II node of the maximum value of Rmax, the device proceeds to the 4th stage of operation. In this case, the winding of the tow 2 by the winding tow 12 is carried out by the winding unit I, the winding unit II operates in 2 mode.

The transition from stage 4 of the mechanism to stage 1 is as follows.

When 6-10 turns of the winding bundle 12 remain on the coil 7 of the assembly I, the operator inserts the winding bundle 12 into the winding zone and turns the assembly II into the mode 3 of the bundle winding. After the coil 7 ends on the coil 7 of node I, node I goes into 1 operating mode.

Then the winding cycle is repeated.

Thus, the work process of the spiral winding unit of the technological line for the manufacture of composite reinforcement occurs continuously and does not require stopping the line, which leads to an increase in the length of the composite reinforcement during winding, and therefore, an increase in productivity.

Unlike the prototype, the claimed device allows for a single start winding, which leads to a decrease in the angle of elevation of the turns of the winding cord 2, as a result, to an increase in the pulling force of the reinforcement. In addition, the location of the package with the winding bundle coaxially with the main pipe allows you to reduce dynamic loads and, as a result, reduce the noise and vibration of the mechanism. In addition, the coaxial arrangement of the package with the winding bundle allows you to form a package with a larger radius, which increases the time periods between switching from stage to stage and thereby reduce the time of servicing the production line.

Claims (1)

Spiral winding device for the production line for the production of composite reinforcement, including serially installed creel with roving rods, leveling device, annealing chamber, impregnating bath with a tension device, squeezing device, molding unit, spiral winding device of two nodes installed one after another and each of which includes a coil of a winding bundle with a yarn guide, polymerization chambers, a pulling device, cutting and reeling units, characterized in that each unit with The oral winding is made in the form of a round pipe to advance the bundle and a length of at least one and a half lengths of the coil of the winding bundle installed in the bearings, on the one hand through a chain transmission the pipe is connected to the electric motor drive, and at the opposite end of the pipe there is a thread guide with an eye at a distance C from pipe axis, where Rmax≤С≤Rmax + 50, where Rmax is the maximum packing radius of the winding bundle, and the coil of the winding bundle is fixed coaxially with the main pipe on bearings mounted on the outer surface of the pipe with the possibility of free rotation, and is rigidly connected to the coupling half with the possibility of connecting with another coupling half located on the main pipe, the main pipes of the winding nodes are located at a distance H from each other within C≤N≤C + 20 mm, where C is the distance from the eye yarn guide to the axis of the main pipe.

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