RU2458214C2 - Process line for manufacture of reinforcement elements - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: in a process line to make reinforcement elements, comprising a creel with bobbins of thread-like materials, an annealing chamber, a dipping bath with a strain device, a wringing device, polymerisation chambers, a drawing device, a cutting unit, the creel is equipped with devices to rotate thread-like materials with thread tracts, and rollers of the drawing device are installed in the polymerisation chamber. Rollers of the drawing device may be arranged in the form of a pair of gear wheels from a non-stick material, for instance, fluoroplastic.

EFFECT: improved operational characteristics.

4 cl, 2 dwg

Description

The invention relates to processing lines for the manufacture of reinforcing elements used for dispersed reinforcement of fiber-reinforced concrete building structures.

Dispersion reinforcement made of metal threads and shavings, polymer and mineral fibers, horse hair has been widely used in construction practice.

Known production line for the manufacture of non-metallic composite reinforcement described in the book of the author N. Frolov “Fiberglass reinforcement and glass concrete constructions” (M., Stroyizdat, 1980, pp. 20-27), including creel for hair with roving spools, leveling device, annealing chamber, impregnating bath with a tension device, squeezing device, molding unit, spiral device windings, polymerization chambers, pulling device, knots for cutting and winding reinforcement. This line is intended for the production of composite reinforcement with a diameter of 2-40 mm.

The disadvantage of this line is the impossibility of manufacturing twisted composite reinforcement of small diameters in the range of 0.1 ÷ 2.0 mm, necessary to obtain dispersed reinforcing elements.

A device for the manufacture of metal fibers is described in the book "Ways to improve the efficiency of dispersed concrete reinforcement" (Riga, LatNIINTI, 1987, p.14-15), including a bobbin with metal thread, feed rollers, a disk cutter.

The disadvantage of this device is that the reinforcing elements made on it are prone to clumping.

The present invention solves the problem of creating a technological line for the continuous production of reinforcing elements in the range of diameters of 0.1 ÷ 2.0 mm, on which both composite and metal reinforcing elements can be manufactured with a high productivity of the manufacturing process.

To achieve the specified technical result in the production line for the manufacture of reinforcing elements, including creel-pulp with bobbins of filamentary materials, an annealing chamber, an impregnating bath with a tension device, a squeezing device, polymerization chambers, a pulling device, a cutting unit, a creel, is equipped with devices for rotating filamentary materials with nontracts, and the rollers of the hauling device are installed in the polymerization chamber. The rollers of the pulling device can be made in the form of a pair of gears made of non-stick material, for example, fluoroplastic.

Distinctive features of the invention from the above known closest is that the creel is equipped with devices for rotating filamentary materials with nitracts, and the rollers of the pulling device are installed in the polymerization chamber. The rollers of the pulling device can be made in the form of a pair of gears made of non-stick material, for example, fluoroplastic.

Due to the presence of these features, the production line allows the production of both composite and metal reinforcing elements of small diameters with a high productivity of the manufacturing process.

The proposed production line for the continuous manufacture of reinforcing elements of small diameters is illustrated by the drawings shown in figures 1, 2.

Figure 1 schematically shows a production line for the manufacture of reinforcing elements.

Figure 2 schematically shows a production line for the manufacture of profiled reinforcing elements.

The production line for the manufacture of reinforcing elements (Fig. 1) consists of a creel crest 1, in which a bobbin with filamentary material 3 is mounted on the rotation spindle 2 (the spindle rotation drive is not shown), a non-tract 4, an evaporator 5, an impregnation bath 6 with a tension device 7, squeezing device 8, polymerization chamber 9, pulling device 10, cutting device 11, drive 12.

For the manufacture of profiled reinforcing element (figure 2) the rollers of the pulling device are made curly and placed in a polymerization chamber.

A technological line for the continuous manufacture of composite reinforcing elements works as follows.

From creel 1, fibers of glass, basalt, carbon, metal and other fibers from bobbins 3 are rotated in spindle 4 during rotation on spindle 2, pass through annealing chamber 5, which removes moisture at a temperature of 200-250 ° С. Then the twisted threads pass through an impregnation bath 6 filled with a polymer binder with a temperature of 40-60 ° C, a tensioner 7, which carries out the same tension of the fibers in the threads.

Removal of excess polymer binder is carried out in an elastic squeezing device 8, and then in the polymerization chamber 9, the polymer binder is heated and cured. When the rollers of the pulling device 10 rotate, the cured filaments are transferred to the cutting device 11, producing a segment of reinforcing elements of the required length, which enter the drive 12.

In the case of manufacturing a profiled reinforcing element, the rollers of the pulling device are made shaped like gear wheels, which make it possible to produce a smooth wave-like, rectangular, trapezoidal or other thread profile. To fix the geometry of the profile during curing of the polymer binder, curly pulling rollers are installed in the polymerization chamber 9 and are made of non-stick material, for example fluoroplastic.

The proposed production line for the manufacture of reinforcing elements of KNPO Ural Reinforcing Company LLC Perm (www.armatura-liana.com) produced reinforcing elements of basalt and metal fibers impregnated with a binder based on epoxy resins of a hot curing system.

Reinforcing elements made of twisted basalt roving with a density of 110 tex have an outer diameter of 0.2 mm, and from a roving with a density of 220 tex have an outer diameter of 0.35 mm. Reinforcing elements made by twisting two metal threads with a diameter of 0.3 mm have a helical profile with a spiral microrelief. The spindle speed was 50 rpm, line productivity 300 m / h. The cutting device ensured the execution of segments from 5 to 50 mm long. At the same time 10 threads were made.

Physico-mechanical properties of the reinforcing element:

- breaking tensile stress σ _B = 1000 MPa (for composite reinforcing elements) and σ _B = 250 MPa (for metal reinforcing elements).

The proposed production line allows the production of reinforcing elements by a continuous process with high productivity and enhanced physical and mechanical properties.

Claims (4)

1. A technological line for the manufacture of reinforcing elements, including creel-creamer with bobbins of filamentary materials, an annealing chamber, an impregnation bath with a tensioner, a squeezing device, polymerization chambers, a pulling device, a cutting unit, characterized in that each babin attached to the creel has a rotation drive and twisting, and the rollers of the pulling device are installed in the polymerization chamber. 2. The production line according to claim 1, characterized in that the rollers of the pulling device are made in the form of a pair of gears. 3. The production line according to claim 1, characterized in that the rollers of the pulling device are made of non-stick material. 4. The production line according to claim 1, characterized in that the rollers of the hauling device are made of fluoroplastic.

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