Netted thermo-profile and method of its manufacturing

FIELD: construction.

SUBSTANCE: invention pertains to construction, in particular to constructions of netted thermo profiles with C or U-shaped section, used as bearing frame elements of pre - fabricated buildings, roofs, fronts, balcony walls, where it is necessary to eliminate "cold joints" effect, and to the method of manufacture of netted thermo profiles. Set task is solved through consecutive vertical drawing of slots made in the central part of the blank symmetrical to the profiling axis from utter rows of the blank to the center in drawing cages forming a netted construction, and further in smoothing cages netted construction is displaced from the center to the edges by smoothing rollers with simultaneous leveling of the netted surface, whereat cells in internal rows of the netted construction acquire diamond shape, and lateral - triangle shape with rounded top, thereat excess of longitudinal draw of the metal on the bridges between the through cells are eliminated by knurling in the shape of buckles in the extension zone.

EFFECT: creation of netted thermo profile having smaller width of the initial blanks (strip) to save up material, retaining geometric characteristics and heat conduction of thermo profiles of identical cross section.

3 cl, 5 dwg

 

The invention relates to the field of construction, in particular to the structures of thermoprofile mesh With and a U-shaped cross section, used as load-bearing elements of the skeletons of pre-fabricated buildings, roofs, facades and balcony walls, where it is necessary to exclude the influence of "cold bridges", as well as to a method of manufacturing thermoprofile net.

Known thermoprofile firms "Lindab constru-tine" Internet address www.Lindab.com., "INSI" Internet address www.Insi.ru., "Cherepovets-Profile Internet address www.profil 35.ru. Feature of any thermal profile is the presence on its support elements, the perforation in the form of pass-through of slots arranged in a checkerboard pattern with offset step, which increases the path of heat flow, reducing the conductivity of 80-90% depending on the profile view.

Punching of such rents, regardless of the way they are received (stamp or installing rotating)does not affect the width of the original piece (see figure 1, 2).

The technical task of the invention is the creation of thermoprofile mesh, or a U-shaped cross-section, which, while preserving the geometric parameters H, S, and thermal conductivity of thermoprofile identical cross-section, would have a smaller width of the original piece (tape) in order to save metal.

The known method and is for drinking, preparing the profile of the angular mesh (RU # 2240194 IPC 7 21D 47/00, 5/06) which involves feeding the tape in novokletevoj roll forming mill, which form the perforation of the workpiece and form the profile. Previously the length of the workpiece along its axis of symmetry to form a longitudinal groove, perforation of the workpiece is formed in the shape of rhombic grid by applying a series of longitudinal slots, equal in length and arranged in adjacent rows are offset relative to each other by half a step and further extraction of the slits from the edges of the workpiece to the center of serial passages on the stands. The profile shape in the form of angle between mesh shelves profile consistent pogibli towards each other in the roll forming mill. After the formation of corner carry out the alignment of the outer surface of the shelves profile in additional working stand.

As a workpiece using a band width equal to the length of the shelves in the unstretched condition.

The disadvantage of this method is the impossibility of making thermoprofile mesh With or U-shaped cross-section, in which the hood rows of slits is not from the edges of the workpiece (tape)and in the Central part.

The problem is solved by drawing the original piece by transformation of the series of longitudinal slits-width "ex." (3) in mesh design with romove the different cells of width "C" (figure 4) due to the complete line of automatic cold forming mill cutting, consisting of expanded metal, fume and smoothing stands in front of the roll forming mill.

In the claimed method of manufacturing thermoprofile mesh tape with decoiler comes in an expanded metal cage in which special cutting notches top and bottom circular knives on its surface without removal of metal put through longitudinal rows of slots, equal in length and arranged in a checkerboard pattern with offset half step, symmetrically to the axis of the profiling in the Central part of the billet.

The number of rows of slots "n" is not less than three on either side of the axis profiling is limited by the mechanical properties of the final product.

Then made consecutive vertical hood slots from the extreme ranks of the workpiece to the center, forming a mesh structure. The hood is in the exhaust train with the help of Cam wheels arranged in pairs above and below, the thickness of which corresponds to the distance between the rows of slits and the distance between the tops of the teeth is a multiple step slots. Later in smoothing stands mesh design using smoothing rollers located above and below, is shifted from the center to the edges with a simultaneous horizontal alignment of the mesh structure, and the cell internal series mesh design acquire obavezno form and the side - a triangle shape with rounded top. Excess longitudinal extrusion of the metal jumpers between the through-cells are removed by applying knurling in the form of transverse corrugation in the elongation zone.

Next, the workpiece is fed into the roll forming mill, where through a profiling tool magazine tool is consistent continuous deformation of the metal to obtain a thermal profile of a mesh of a given cross-section.

For the manufacture of thermoprofile mesh With or U-shaped cross section is used, the workpiece (ribbon) with a width of less in size 2×(n-1)h compared with thermoprofile identical cross-section, where

"n" is the number of rows of slits on one side of the axis profiling

"h" is the value of the extrusion slits in the transverse direction.

Constructed in this way thermoprofile mesh With or U-shaped cross-section have a net wall, in which the cells of the inner rows have a diamond shape, the side shape of a triangle with a rounded top, and the bridges between cells caused the knurling in the form of transverse corrugation with a given step (see figure 5).

1. Thermoprofile mesh, having a cross section that contains a wall with longitudinal rows of perforated slots, equal in length and lo is its staggered offset by a half pitch symmetrical axis profiling, and two side shelves, wherein the series of longitudinal slots in the wall of the vertical profile after extrusion and horizontal alignment have cellular structure with cells on the inner rows of diamond shape, on the side in the shape of a triangle with a rounded top, and the bridges between cells coated with knurling in the form of transverse corrugation with a given step.

2. A method of manufacturing a thermal profile mesh, including the unwinding of tape from a roll, punching rows of slots, equal in length and arranged in a checkerboard pattern with offset half step symmetrical axis profiling from the edge of the workpiece, consistent, continuous deformation of the metal to obtain a profile of a given cross-section, characterized in that after notching on the surface of the workpiece n rows of longitudinal through slots without removal of the metal is consistent vertical hood slots from the extreme ranks of the workpiece to the center in the exhaust train Cam wheels, the thickness of which corresponds to the distance between the rows of slits and the distance between the tops of the teeth is a multiple step of punching, forming a mesh design and later in smoothing stands mesh design using smoothing rollers arranged in pairs above and below, is shifted from the center to the edges with the completion of the m horizontal alignment of the mesh surface, on the inner rows of cells of the mesh design acquire a diamond shape, and the side - a triangle shape with rounded top, the excess longitudinal extrusion of the metal jumpers between the through-cells are removed by applying knurling in the form of transverse corrugation in the elongation zone.

3. A method of manufacturing a thermal profile of a mesh according to claim 2, characterized in that successive vertical hood slots from extreme numbers to the center is not from the edges of the workpiece (tape)and in the Central part.

4. A method of manufacturing a thermal profile of a mesh according to claim 2, characterized in that for the manufacture of thermal profile of a given cross-section as the workpiece is used, the tape width, the smaller the value of 2·(n-1)h.



 

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