RU2610394C1 - Method for tubular wickerwork production and device for its implementation - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention refers to manufacture of articles from composite materials. The device for tubular wickerwork production includes a vertically fixed mandrel, a three-level table of concentric rings with ramps and groups of coils equally spaced along the circumferences. Rings are mounted with a possibility of rotation. The first group of coils constituting half of the tota number is located at the lower ring. The second group of coils is located by equal parts on the upper and middle rings. The device has a drive and mechanisms to move coils and rings. The method for manufacture of tubular wickerwork by rotation about a stationary mandrel in opposite directions along closed, periodically intersecting trajectories of two groups of evenly spaced coils with threads mounted on the rings, wherein each thread of one direction passes over and under the threads of the other direction, wherein the ring coils revolve continuously at the same angular speed, wherein the upper and middle ring around the mandrel rotate synchronously in one direction, opposite to the lower ring, the coils of the second group are moved further from one ring to another in the radial direction, avoiding the thread of the first group coils. The invention provides a continuous smooth weaving process, improves the performance of weaving.

EFFECT: device for tubular wickerwork production based on solid-type glass fibers and a polymer binder.

2 cl, 4 dwg

Description

The invention relates to the field of production of products from composite materials based on strong fibers such as fiberglass and a polymeric binder, and are intended for the production of pipes, bends, tees, temperature compensators, pressure cylinders of various shapes and other multidisciplinary reinforced products.

The closest method of the same purpose to the claimed method according to the totality of features is a method for producing a tubular wicker product (RF patent No. 2291920 from 01.20.2007). The method consists in creating a woven product on the surface of a cylindrical mandrel by rotating around it in opposite directions along complex closed intersecting paths of two groups of uniformly distributed spools of thread, in which each thread of one direction passes above and below the threads of another direction. In this case, the groups of coils move alternately: one in the tangential (circumferential) direction by one step, the other sequentially in the radial, tangential one step and again in the radial directions, then the cycle is repeated many times. As the operating time, the braid is gradually pulled up from the mandrel and wound in the form of a sleeve on the receiving drum. This method is adopted as a prototype.

Signs of the prototype, which are common with the claimed method, include rotation around a stationary mandrel in opposite directions in closed. periodically intersecting trajectories of two groups of uniformly distributed spools of thread mounted on the rings, with each thread of one direction passing above and below the threads of another direction.

The closest device of the same purpose to the claimed device according to the totality of features is a device for producing a tubular wicker product (RF patent No. 2291920 dated January 20, 2007) containing a three-level table consisting of concentric rings: the upper and middle rings are conical, lower the ring is flat, on the rings are two groups of spools of thread. The middle and lower rings have the ability to rotate step by step in opposite directions, the upper ring is stationary. The upper and middle rings have radial guides, along them with the help of pushers one group of coils moves. The device comprises a drive and mechanisms for rotating the rings and radial movement of the coils. The inclination of the working surfaces of the conical rings has an angle equal to the angle between the axis of the mandrel and the direction of the threads from the lower ring, the upper and middle rings are located with a minimum radial clearance sufficient for the passage of threads from the coils of the lower ring. This device is taken as a prototype.

Signs of the prototype, which are common with the claimed device, is a vertically fixed mandrel; a three-level table of concentric rings with inclined guides and groups of coils on them, arranged evenly around the circles; the lower and middle rings are installed with the possibility of synchronous rotation around the mandrel in opposite directions; pushers; drive and mechanisms for moving rings and coils.

A disadvantage of the known method and device adopted as a prototype is the low productivity of weaving due to the mode of operation of the device, namely because of the periodicity of the tangential movement of the middle and lower rings, stragging and stops on each weaving cycle.

The task to which the claimed invention is directed is to provide a continuous smooth weaving process, increasing the performance of weaving.

The problem was solved due to the fact that in the known method for producing a tubular woven product by rotating around a stationary mandrel in opposite directions along closed, periodically intersecting trajectories of two groups of uniformly distributed spools of thread mounted on the rings, each thread of the same direction passes over and under the yarns of a different direction, according to the invention, the rings with coils rotate continuously with the same angular velocity, and the first group of coils, constituting the second half of the total number is placed on the lower ring, the second group of coils is placed in equal shares on the upper and middle rings, while the coils of the second group are additionally moved from one ring to another in the radial direction, bypassing the threads of the first group of coils, and the upper and middle the rings rotate around the mandrel synchronously in one direction, the lower ring in the opposite.

Distinctive features of the proposed method for producing a tubular woven product from the prototype: rings with coils rotate continuously with the same angular speed; the first group of coils, accounting for half of the total number, is placed on the lower ring; the second group of coils are placed in equal shares on the upper and middle rings; the coils of the second group additionally move from one ring to another in the radial direction, bypassing the threads of the first group of coils; the upper and middle rings rotate around the mandrel synchronously in one direction, and the lower ring in the opposite.

The problem was also solved due to the fact that in the known device for producing a tubular wicker product, including a vertically fixed mandrel, a three-level table of concentric rings with inclined guides and groups of coils on them, arranged uniformly around the circles, with the lower and middle rings installed with the possibility of synchronous rotation around the mandrel in opposite directions, pushers, drive and mechanisms for moving rings and coils, according to the invention, the upper ring is installed It is mounted with the possibility of synchronous rotation around the mandrel in the direction of rotation of the middle ring, while the first group of coils, which is half of the total number, is placed on the lower ring, the second group of coils is equally placed on the upper and middle rings and pushers are installed with the ability to move the coils along the guides from one ring to another between the threads of the first group of coils of the lower ring.

Distinctive features of the proposed device for producing a tubular woven product from the prototype are: the upper ring is mounted with the possibility of synchronous rotation around the mandrel in the direction of rotation of the middle ring; on the lower ring is the first group of coils, which is half of the total; the second group of coils is equally placed on the upper and middle rings and pushers are installed with the ability to move the coils along the guides from one ring to another between the threads of the first group of coils of the lower ring.

Due to these distinctive features of the proposed method for producing a tubular wicker product and device for its implementation, smoothness and continuity of the weaving process are ensured, the operating mode of the mechanisms and drive is improved, and the performance of weaving is increased.

The proposed method and device are illustrated by the drawings shown in FIG. 1-4.

In FIG. 1 shows the motion paths of two groups of coils relative to a fixed mandrel.

In FIG. 2 shows a fragment of the resulting woven product.

In FIG. 3 shows the device (top view, the coils of the lower ring are shaded).

In FIG. 4 shows the device (front view, only the extreme coils of both groups are shown).

The device is a vertical structure, its central part is a rack 1 with a cylindrical mandrel 2 located at the top, its diameter determines the transverse size of the wicker product. Around the rack are three concentric flat rings 3, 4, 5, which are the main elements of a three-level table. The upper 3 and middle 4 rings have the ability to rotate continuously, synchronously in one direction 6, and the lower ring 5 - in the opposite direction 7, with the same angular speeds.

On rings 3, 4, 5, coils 8, 9 are evenly spaced around the circumference. Coils 8 of the second group are located on the upper 3 and average 4 rings. On the lower ring 5 there is a first group of 9 coils. Moreover, the first group of 9 coils is half of the total number of coils. Coils of the second group 8 are divided into two equal parts.

Coils 8 are able to move along inclined radial guides 10 in opposite directions 11, 12 due to pushers 13, 14. Threads 15, 16 come off coils 8, 9 onto mandrel 2 (Fig. 4), a fragment of a woven product 17 is also shown here. The device also has a drive and mechanisms of rotation of the three rings and the radial movement of the coils 8, a special mechanism for uniformly, slowly pulling the woven product 17 from the mandrel 2 as the operating time and winding on the drum in the form of a flat sleeve (these elements of the device are not shown in the figures).

The device operates as follows.

Spools of thread are mounted on all rings in accordance with the diagrams in FIG. 1, 3, 4. The first half 9 of all coils is placed on the lower ring 5, the second half 8 is divided into two equal parts and installed in the guides 10 of the upper 3 and middle 4 rings. Next, the initial position of all the rings is controlled in accordance with the circuit of FIG. 3. The radial guides 10 of the rings 3, 4 should be arranged in pairs in one straight line, the coils 9 of the lower ring 5 should occupy the position exactly in the middle between adjacent coils 8 in accordance with the diagram; if necessary, an extension of the rings is done for this. The ends of all threads 15, 16 from the coils 8, 9 are fixed at the top of the mandrel 2, distributing them evenly around the circumference, as a result of which a spatial conical fan is formed. After starting the device, due to the drive and mechanisms, three rings simultaneously begin to rotate in continuous mode with the same angular speed: rings 3, 4 synchronously in one direction 6, for example, counterclockwise (Fig. 3), and ring 5 in the opposite direction 7 Together with the rings, both groups of coils move. The coils 9 of the first group move along a circular path, clockwise (Fig. 1). The coils 8 of the second group, in addition to the circumferential movement around the mandrel, are moved along the radial guides 10 by the pushers 13 from the ring 3 to the ring 4 and the pushers 14 from the ring 4 to the ring 3. As a result of the addition of the circumferential V _ok and radial V _p components of the speeds of movement of the coil 8 move along a wave-like closed path, bypassing the threads 16, moving in the opposite circumferential direction. Thus, in the process of weaving, the product 17 is produced on the mandrel, which, using a special mechanism, continuously pulls upward from the mandrel 2 in a continuous mode and is wound in the form of a flat sleeve on the receiving drum. The resulting woven product is subsequently used as a reinforcing frame for parts made of composite materials.

Claims (2)

1. A method of obtaining a tubular woven product by rotating around a stationary mandrel in opposite directions along closed, periodically intersecting trajectories of two groups of uniformly distributed spools of thread mounted on the rings, each thread of one direction passing above and below the threads of another direction, characterized in that rings with coils rotate continuously with the same angular velocity, and the first group of coils, which is half of the total number, is placed on the lower ring, the second a group of coils is placed in equal proportions on the upper and middle rings, while the coils of the second group are additionally moved from one ring to another in the radial direction, bypassing the threads of the first group of coils, and the upper and middle rings rotate around the mandrel synchronously in one direction, the lower ring the opposite. 2. A device for producing a tubular wicker product, comprising a vertically fixed mandrel, a three-level table of concentric rings with inclined guides and groups of coils on them, arranged uniformly around the circles, the lower and middle rings being installed with the possibility of synchronous rotation around the mandrel in opposite directions, pushers , drive and mechanisms for moving rings and coils, characterized in that the upper ring is mounted with the possibility of synchronous rotation around the mandrel in the rotation of the middle ring, while on the lower ring the first group of coils is placed, which is half of the total number, on the upper and middle rings the second group of coils is placed in equal shares and pushers are installed with the ability to move the coils along the guides from one ring to another between the threads of the first groups of coils of the lower ring.

Images