RU209579U1 - DEVICE FOR FORMING A DOUBLE STANDING SEMBED JOINT - Google Patents

Abstract

This utility model relates to the processing of metals by pressure, namely, to devices for the formation of a double standing seam connection of adjacent pre-profiled edges of metal strips during roofing work in individual construction. The utility model describes a device that contains a fixed bracket, a movable bending rotary element and an axis, and is characterized in that the bending rotary element has an L-shaped shape, while it is connected to the fixed bracket pivotally through an axis having an eccentricity that allows you to change the gap when the fixed bracket is closed and bending rotary element ranging from S-Δto S+Δ. At the same time, a pointer is made on the end of the axle, coinciding with the value of the eccentricity, and markings are applied on the fixed bracket, indicating the limits of the change in the gap when the fixed bracket and the bending rotary element are closed. The technical result consists in expanding the functionality of the device, allowing to perform a double seam connection with an increased thickness of the metal, as well as at different angles in hard-to-reach narrow places, for example, in an arch or opening.

Description

FIELD OF TECHNOLOGY

The utility model relates to the processing of metals by pressure, namely to devices for the formation of a double standing seam connection of adjacent pre-profiled edges of metal strips during roofing work in individual construction.

BACKGROUND OF THE INVENTION

From the patent of the Russian Federation No. 2178491 "Device for the formation of a standing seam connection", publ. 01/20/2002 in Bull. No. 2, an invention is known, which consists of side cheeks connected by a fixed cross member, a bending rotary element, which is a shaft with an irregular cross section with annular protrusions on its ends placed in grooves made on the inner sides of the side cheeks. The position of the geometric axis of rotation of the shaft is chosen so that it provides free rotation of the shaft at an angle of more than 90 ^o , and the side cheeks have openings for passing through them the edges of the metal strips.

However, the device described in RF patent No. 2178491 has disadvantages. This device is not suitable for roofing work with increased metal thickness, as well as for work of increased complexity, for example, for closing the fold on the arch, in narrow places, since the design of the prototype device does not imply the possibility of adjusting the gap when closing the fixed cross member and the bending rotary shaft.

ESSENCE OF THE UTILITY MODEL

The purpose of the present utility model is to improve the device for forming a double standing seam connection of adjacent pre-shaped edges of metal strips and eliminate the disadvantages of the prior art.

The technical result consists in expanding the functionality of the device, allowing to perform a double seam connection with an increased thickness of the metal, as well as at different angles in hard-to-reach narrow places, for example, in an arch or opening.

The claimed technical result is achieved due to the proposed design of the device for the formation of a double standing seam connection, which contains a fixed bracket, a movable bending rotary element and an axis and is characterized in that the bending rotary element has an L-shape, while connected to the fixed bracket pivotally through an axis having eccentricity with the value "Δ". At the same time, a pointer is made on the end of the axle, coinciding with the value of the eccentricity, and markings are applied on the fixed bracket, indicating the limits of the change in the gap when the fixed bracket and the bending rotary element are closed. In this case, the gap change limits vary from “S _-Δ ” to “S _+Δ ”.

The above and other objects, features, advantages, as well as the technical significance of this utility model will be better understood from the following detailed description and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 shows an end view of the device and two positions of the bending rotary shaft - initial and working.

In FIG. 2 shows a section along A-A of FIG. 1, where 1 is a fixed bracket, 2 is a movable bending rotary element, 3 is an axis.

In FIG. 3 shows the principle of changing the gap when closing the fixed bracket and the bending rotary element, the limits of which vary from "S _-Δ " to "S _+Δ ".

In FIG. 4 shows a view of a double standing connection of adjacent pre-profiled edges of metal strips - a folded lock, where S is the thickness of the folded lock.

IMPLEMENTATION OF UTILITY MODEL

Figures 1 and 2 show a device for forming a double standing seam connection of adjacent pre-profiled edges of metal strips (end view and in section), which contains a fixed bracket (1), a movable bending rotary element (2) and an axis (3), and differs in that the bending rotary element (2) has an L-shape, while it is connected to the fixed bracket (1) pivotally through the axis (3), which has an eccentricity of "Δ". At the end of the axis (3) there is a pointer coinciding with the value of the eccentricity, and on the fixed bracket (1) there is a marking indicating by what amount the gap can be changed when the fixed bracket (1) and the bending rotary element (2) are closed. The gap change limits can be varied from "S _-Δ " to "S _+Δ ".

In fact, the device consists of two pivotally connected elements, which are additionally equipped with handles.

The device works as follows.

To connect the pre-profiled edges of metal strips, it is necessary to open the device and attach it to the metal edge in such a way that the fixed bracket (1) adjoins it on the reverse side of the seam connection being formed, and the bending rotary element (2) is on top of the bent edge. When the element (2) is rotated around the axis (3) of rotation, the edge is bent. When the limit angle of rotation is reached, the rebate lock is compressed.

It is important to take into account that, for example, when the thickness of the roofing metal strip (panel) changes, the thickness of the resulting seam lock also changes. To do this, it is necessary to provide for a change in the size of the gap when the fixed bracket (1) and the bending rotary element (2) are closed.

If this is not taken into account in the design of the tool for closing the seam, then the result will be a poor-quality seam connection and an early wear of the tool itself.

Thus, the proposed utility model eliminates the shortcomings of the prior art and allows the use of metal strips of various thicknesses as raw materials for seam roofing.

For example, if for the formation of a double standing seam connection of adjacent pre-profiled edges of metal strips during roofing, metal strips with a thickness of 0.4 mm to 1 mm are used, then the thickness "S" (see figure 4) of the resulting seam lock will vary in the range from 3.2 to 6.5mm. In this case, the value of the eccentricity "Δ" will be (6.5-3.2)/2=1.65mm, and "S ₀ "=3.2+1.65=4.85mm.

The gap with a given thickness “S” is adjusted by the roofer when the axis (3) is rotated in the markings applied on it that are fixed along the bracket (1).

Claims (2)

1. A device for the formation of a double standing seam connection of adjacent pre-profiled edges of metal strips, containing a fixed bracket, a movable bending rotary element and an axis, characterized in that the bending rotary element has an L-shape, while connected to the fixed bracket pivotally through the axis, having an eccentricity that allows you to change the gap when closing the fixed bracket and the bending rotary element in the range from S _-Δ to S _+Δ . 2. The device according to claim 1, characterized in that a pointer is made on the end of the axis, coinciding with the value of the eccentricity, and markings are applied on the fixed bracket, indicating the limits of the change in the gap when the fixed bracket and the bending rotary element are closed.

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