RU2379444C1 - Meshy equal angle and method of its manufacturing - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: meshy equal angle consists of two expanded webs arranged at the angle to each other, and coupled with their cylindrical surface inverted with their prominence outwards, and slots are arranged on each of webs, being placed in staggered order with displaced pitch and creating meshy structure after drawing with diamond-shaped cells and links between them, which are installed in single plane with solid strip section of metal. Meshy structure of web with two rows of diamond-shaped cells, which are parallel to each other and are installed at the angle to longitudinal axis of angle symmetry, is placed between stiffening rib and solid strip section of metal from web. Rows of diamond-shaped cells in webs are oriented towards each other (as herring-bone) relative to longitudinal axis. Links between diamond-shaped cells are installed in single plane with solid strip sections of metal along web edges. Method is described for manufacturing of meshy equal angle.

EFFECT: provision of required stiffness and adjacency, increased metal saving.

2 cl, 2 dwg

Description

The invention relates to the field of construction, in particular to the construction of profiles used for leveling and reinforcing corner surfaces installed under putty when finishing wall surfaces, and also as protection of corner joints from chips and deformations.

Known profile angular mesh (RU No. 28367), consisting of two expanded metal shelves with diamond-shaped cells connected by a transition section and oriented at an angle of 70-90 ° to each other. Each shelf consists of a continuous section of a strip with a width of 30 to 50% of the total length of the shelf (the length of the shelf from the top of the corner to the edge) and a mesh located behind the solid section to the edge of the profile. The mesh design with diamond-shaped cells was obtained by vertical drawing symmetrical about the longitudinal axis of the slots located in a checkerboard pattern with a row offset by half a step. The transition section at the junction of the shelves has two parallel walls, conjugated by a cylindrical surface with a radius of at least 2.00 mm, convex outward, and in combination with solid stripes forms a stiffener for a long profile part.

In this profile, the jumpers between the diamond-shaped cells are located at an angle to the plane of the walls of the transitional section of the shelves, which allows it to be used only for plastering when finishing wall surfaces with a thickness of finishing material up to 15 mm.

A known profile is rolled angular mesh (RU No. 69113), which differs from the previous one in that the jumpers between the diamond-shaped cells are located in the same plane as the walls of the transitional section of the shelves, which allows the use of an angled mesh profile for putty.

The disadvantage of these profiles is their lack of rigidity, since the mesh surface falls on the edges of the profile and due to this, the mesh surface of the profile shelves does not fit snugly against the corner walls.

A known method of manufacturing a mesh or mesh profile (RU 2275268), including the implementation of the workpiece rows of grooves, equal in length and staggered, and the subsequent deformation of the workpiece by stretching it. Slots in rows are performed at an angle of 10 ° to the longitudinal axis of symmetry of the workpiece with the formation of sections of solid metal. The workpiece is stretched by applying a pair of forces to the areas of solid metal directed vertically up or vertically downward through the fixing pair rollers of the roll forming mill, with the simultaneous formation of longitudinal grooves or corrugations in the areas of solid metal. With the successive movement of the workpiece from the stand to the stand, the protrusions of the outer diameters of the upper rollers increase, and the troughs of the lower ones decrease accordingly, as a result of which the width of the mesh sections reaches the calculated value.

In the manufacture of a mesh, notches in rows are made at an angle of up to 10 ° to the longitudinal axis of symmetry of the workpiece with the formation of solid metal sections along the edges of the workpiece and the formation of longitudinal grooves on them when stretched.

In the manufacture of the mesh profile in the workpiece, pairwise symmetric groups of rows of grooves are formed with the formation of sections of solid metal along its edges and between the rows. Perforations in paired rows are made directed towards each other at an angle of up to 10 ° to the longitudinal axis of symmetry. When a workpiece is stretched to each solid metal section located between the rows, pairs of forces are applied along its axis of symmetry with the formation of longitudinal corrugations between the rows and longitudinal grooves on the workpiece edges, and after the completion of stretching, the corrugated workpiece is rolled.

However, the implementation of this method is technically difficult, since it requires a tool that is difficult to design and manufacture.

The technical result of the invention is the elimination of these disadvantages, i.e. ensuring the necessary stiffness and fit of the profile, as well as increasing the economy of metal due to changes in the technology of manufacturing the profile.

This result is achieved due to the fact that the continuous strip sections of metal in the corner mesh profile are located not at the junction of the shelves conjugated by a cylindrical surface, but along the edges of the shelves, and the diamond-shaped mesh cells are located at an angle to the longitudinal axis of symmetry of the profile and are placed between the stiffener and a solid strip of metal located at the edges of the workpiece.

Figure 1 presents a General view of the corner of an equal-shelled mesh.

The net corner is equal-shelled, consists of two expanded metal shelves 1, 2 with diamond-shaped cells located at an angle of 87-90 ° to each other, conjugated by a cylindrical surface 3 with a radius of not more than 2.00 mm (stiffening rib) facing outwardly convex. The expanded metal shelf has a mesh structure with two rows of diamond-shaped cells parallel to each other and located at an angle to the longitudinal axis of symmetry of the corner. The rows of diamond-shaped cells in the shelves are oriented towards each other (herringbone) relative to the longitudinal axis.

The jumpers 4 between the diamond-shaped cells are located in the same plane with a continuous strip of metal 5 located at the edges of the workpiece.

A method of manufacturing an equal-angle net corner (see Fig. 1) is as follows.

A blank in the form of a strip from the unwinder is fed into the rolls of a rotary installation, and between two continuous strip sections of metal from the edges of the workpiece and a section of solid metal in the central part (see Fig. 2), two rows of cuts are symmetrically oriented along the longitudinal axis and located at an angle to the longitudinal axis towards each other (herringbone). The notches in the rows of one group are parallel to each other, equal in length and arranged in a checkerboard pattern with an offset by the step size. Next, the workpiece enters a roll forming mill, in which the resulting grooves are stretched in the transverse direction to obtain a mesh structure of predetermined dimensions, for which transverse directional tensile forces are applied to the continuous strip sections from the edges of the workpiece, then the surface of the workpiece is aligned and the equal-angle corner is profiled by sequentially bending the workpiece onto set angles by pairs of rolls of a roll forming mill.

The workpiece is fixed due to the stiffener formed in the first stand of the roll forming mill from the solid metal section in the central part of the strip and located along the symmetry axis of the workpiece. In the next stand, symmetrically arranged corrugations are formed in the form of a lock along the edges of the workpiece, which provide input and retention of the workpiece in the rolls of the roll forming mill during stretching. All pairs of rolls of a roll forming mill for making a mesh surface have the same configuration in cross section, but with an increase in diameter, and are made in such a way that the protrusions on one and the corresponding troughs on the other are identical to the contour of the corrugations in the form of a lock in the workpiece, while they are installed symmetrically to the axis of symmetry, and each subsequent pair is removed from the axis of symmetry by an amount greater than the previous one, equal to the ratio of the magnitude of the mesh stretch to the number of stands used in the manufacture mesh cloth.

After obtaining the mesh structure, the surface of the strip billet is flattened by rolling the corrugation contour, and then the equal-shelf corner is profiled by successive bending to the given billet angles by pairs of rolls of the roll forming mill. The finished corner net equal-shelf of a given length is cut off at the installation of the segments.

Claims (2)

1. Equal-angle net corner, consisting of two expanded metal shelves located at an angle to each other and conjugated by a cylindrical surface facing convex outward, and on each of the shelves there are slots arranged in a checkerboard pattern with an offset pitch and forming a mesh structure after drawing with diamond-shaped cells and jumpers between them, located in the same plane with a continuous strip of metal, characterized in that the mesh design of the shelf with two rows of diamond-shaped cells, parallel to each other and located at an angle to the longitudinal axis of symmetry of the corner, is placed between the stiffener and the continuous strip of metal from the edge of the shelf, and the rows of diamond-shaped cells in the shelves are oriented towards each other (herringbone) relative to the longitudinal axis, while the jumpers between the diamond-shaped cells are located in the same plane with solid strip sections of metal along the edges of the shelves. 2. A method of manufacturing a corner of a net equal-shelf, comprising making rows of grooves of equal length and staggered in the blank and subsequent deformation of the blank by stretching it by applying a pair of forces to solid metal sections, characterized in that the stretching of two rows of grooves parallel between themselves and located at an angle to the longitudinal axis of symmetry of the workpiece is carried out in the transverse direction by the rolls of the roll forming mill, while all pairs of rolls of the roll forming mill, for the manufacture of a mesh surface, have the same configuration in cross section, but with an increase in diameter, and are made in such a way that the protrusions on one and its corresponding depressions on the other are identical to the contour of the corrugations in the form of a lock in the workpiece, while they are installed symmetrically to the axis of symmetry, each subsequent pair being removed from the axis of symmetry by an amount greater than the previous one, equal to the ratio of the stretch size of the mesh fabric to the number of stands used in the manufacture of mesh fabric, and fixing the workpiece ki in the form of a strip is carried out due to the stiffener located along the axis of symmetry of the workpiece, and symmetrically arranged corrugations in the form of a lock on the edges of the workpiece.

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