SK10732003A3 - Apparatus and process for producing layers from rock fibers and similar insulating fibrous materials - Google Patents

Abstract

The apparatus for producing layers from rock fibers and similar insulating materials consists of a conveyor (1) of the collection chamber, a receiving conveyor (2), at least two pairs of vertical oscillating belts (3, 5), at least one feeding conveyor 4, and at least one deposit conveyor 6. The fibers are transported by the conveyor (1) to the receiving conveyor (2), which then carries them into nip formed by the first pair of vertical oscillating belts (3), which in turn, deposit the fibers in a zigzag onto the first feeding conveyor (4), from where they pass between the second pair of vertical oscillating belts (5), which deposit them in a zigzag onto the first deposit conveyor (6), wherein the zigzag deposition may be repeated so that the layer of fibers entering the hardening chamber consists of two or more transversally deposited layers, laid at an angle of 90 DEG relative to each other. .

Description

The present invention relates to an apparatus and method for producing layers of mineral fibers and similar insulating fibrous materials. The apparatus and method of the invention are used in the manufacture of insulating boards and felt layers of mineral fibers and similar insulating materials.

BACKGROUND OF THE INVENTION

So far, several technological processes for the production of insulation board and felt layers are known.

Initially, a manufacturing process was known, the basis of which was to form a complete layer in a so-called collection chamber. However, this process was characterized by a number of drawbacks such as a / uneven density transverse to the direction of the production line;

b) uneven density along the layer thickness;

(c) uneven density in the longitudinal direction of the production line;

From this starting state, the prior art then directed to the so-called inclined and drum collecting chambers followed by the so-called. cross-storage facilities. This layer-forming process has eliminated many of the above disadvantages. However, there are still problems regarding micro-densities and product hardness properties.

It is an object of the invention to provide an apparatus and method for forming layers of mineral fibers and similar insulating materials that will provide products of uniform density, micro-density and hardness.

According to the present invention, the object is achieved by means of an apparatus and a method for producing layers of mineral fibers and similar insulating materials according to the independent claims.

In the research and development of new products having improved mechanical and physical properties, new technological manufacturing processes have been developed through which the fiber layer is interwoven several times - at least twice laterally - to form the resulting layer.

This manufacturing process provides a layer with uniform micro-densities and a product with markedly improved physical and mechanical properties.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described with reference to embodiments thereof and two schematic drawings in which:

Fig. 1 is a perspective view of an embodiment of the device according to the invention; and Fig. 2 is a side view of the drive of the collection chamber conveyor.

DETAILED DESCRIPTION OF THE INVENTION

Mineral or other similar fibers, which are formed and blown by the rotor, are deposited in the form of layers on the steel conveyor as well as the collection chamber. The JL conveyor must operate at a very high speed. From there the layer passes to the take-up conveyor 2, which carries the fibers to a pair of vertical, oscillating belts 3. A pair of vertical, oscillating bands 3 oscillate transverse to the direction of travel of the layer. The layer is deposited on the feed conveyor 4, which further transports it to another pair of vertical, oscillating belts 5. The oscillating belts 5 deposit the layer on the storage conveyor 6. Subsequently, the layer obtained by depositing the preceding layers is formed in the curing chamber. The speeds of said belts and collection chamber may be adjusted to provide a layer that is most suitable for a particular target product in terms of fiber orientation.

Fig. 1 shows an embodiment of the present invention, showing the manufacturing process and the device for depositing two transverse layers. In industrial production, kits with two, three or four cross-layer layering devices are used. Such an assembly of devices allows any given transverse storage steps to be enabled as desired, depending on the technological requirements of the particular end product.

According to the present invention, the layer of fibers entering the curing chamber consists of two, three or more transversely laid layers, which are preferably laid relative to each other with a 90 ° rotation. In the first deposition step, the layer width is several times greater than or equal to the deposition range of the layer itself. By adjusting the storage range in each step, it is possible to control the orientation of the fibers in the final layer, regardless of the storage range in the last step. By appropriately selecting the storage range at the appropriate stage, it is possible to adjust the fiber direction to suit a predetermined product.

The device according to the present invention is constructed in such a way as to make it possible to use all or several or only one of the transverse storage stages simultaneously. The oscillating belts allow sufficiently high laying speeds at different laying stages.

The conveyor 1 of the collection chamber is designed and constructed specifically for the desired high speeds (up to 400 m / min). The conveyor 1 is shown in FIG. 2. The Gall chain with specially shaped slats 11 and with a step of less than 100 mm is supported by the support wheels 21, which are coated with a resilient, wear-resistant material. As a segment of the steel conveyor 1, the lamella 31 is attached to the chain. In FIG. 2, only one part of the conveyor 1 is shown, of course the actual assembly comprises two Gall chains, one on each side, with straight slats 11 attached to said chains.

The apparatus according to the present invention for producing layers of mineral fibers and similar mineral insulating materials comprises a collection chamber conveyor 7, a collection conveyor 2 of at least two pairs of vertical oscillating belts 3, 5, at least one delivery conveyor 4 and at least one storage conveyor 6 Both pairs of vertical, oscillating belts 3 and 5 vibrate with a controlled, predetermined amplitude. The removal conveyor 2 and the storage conveyors 6 are arranged perpendicular to the feed conveyors 4.

The process for producing layers of mineral fibers and similar insulating materials is carried out as follows. The fibers are transported by a conveyor 1 to a removal conveyor 2, which further carries them into a slot formed by a first pair of vertical oscillating belts 3, which alternately deposit the fibers zigzag on the first feed conveyor 4 from where they are guided between the second pair of vertical oscillating belts. 5, which deposit the fibers in a zigzag on the first storage conveyor 6, wherein the zigzag placement may be repeated so that the fiber layer entering the curing chamber consists of two or more deposited layers laid 90 ° to each other.

Claims (5)

Apparatus for producing layers of mineral fibers and similar insulating materials, wherein the mineral fibers or the like fibers are formed and blown by a rotor and are deposited on a collecting chamber conveyor, characterized in that it comprises a collecting chamber conveyor (1), a sampling conveyor (2) ), at least two pairs of oscillating belts (3; 5), at least one delivery conveyor (4) and at least one storage conveyor (6). Device according to claim 1, characterized in that the pair of oscillating bands (3; 5) oscillates with a controlled, predetermined amplitude. Apparatus according to claim 1, characterized in that the removal conveyor (2) and the storage conveyors (6) are arranged perpendicular to the supply conveyors (4). Apparatus according to claim 1, characterized in that the collecting chamber conveyor (1) is provided with two Gall chains with a step of less than 100 mm and with straight slats (11), the slats (11) of the conveyor chain (1) being supported by the load wheels. which are coated with elastic, wear resistant materials. Method for producing layers of mineral fibers and similar insulating materials, wherein the mineral fibers or the like fibers are formed and blown by a rotor and deposited on a collecting chamber conveyor, characterized in that the fibers are conveyed by a conveyor (1) to a sampling conveyor (2) by which the fibers are then conveyed into a slot formed by a first pair of vertical oscillating belts (3) which alternately deposit the fibers zigzag on the first supply conveyor (4) from where they pass between a second pair of vertical oscillating belts (5) which deposit zigzag on the first storage conveyor (6), wherein the zigzag deposit may be repeated so that the layer of fibers entering the curing chamber consists of two or more transversely laid layers turned 90 ° relative to each other .