Manufacturing process and arrangement for manufacturing brush-ty

Details Manufacturing process and arrangement for manufacturing brush-ty Manufacturing process and arrangement for manufacturing brush-ty

1998-06-08

2000-05-16

Heinrich, Samuel M.

Metal fusion bonding

Process

With clamping or holding

228 41, 228 443, 298883, B23K 3102

Patent

active

060624639

DESCRIPTION:

BRIEF SUMMARY
The invention relates to a manufacturing process for brush-type seals. Furthermore, the invention relates to an arrangement for manufacturing brush-type seals according to the preamble of claim 18.
The mounting of, for example, ceramic bristles to form a brush-type seal still requires relatively high expenditures, particularly with respect to fastening these bristles on a carrier.
As customary and generally known in the manufacturing of brushes, an arrangement is required for this purpose which contains a holding device for constructing a brush cheek having bristles fastened on the latter for forming a brush-type seal.
It is an object of the present invention to simplify the manufacturing of brush-type seals.
The manufacturing process for brush-type seals according to the invention therefore comprises the following steps: are partially situated next to the space for at least one brush cheek; of the bristles relative to a point of introduction of the bristles into the bristle receiving shaft so that the position of a bristle stack surface in the bristle receiving shaft remains at least essentially constant relative to the point of introduction; formed in the bristle receiving shaft before or after the stacking of the bristles in the bristle receiving shaft; and from the bristle receiving shaft.
As a result of the fact that the bristle receiving shaft is guided past the point of introduction in synchronization with the feeding of the bristles into the bristle receiving shaft, the desired or required defined bristle quantity can be guided and stacked in a simple and efficient manner so that, in the bristle receiving shaft, the individual bristles will immediately take up their end position for the brush in an automatic manner. A manual alignment of the individual bristles is not required. The process according to the invention can not only be carried out rapidly and therefore with a high effectiveness but also in an automated manner, which further increases the effectiveness.
In addition, by means of the process according to the invention, possibilities of errors are avoided during the manufacture of brush-type seals, particularly in the alignment of bristles which leads to lower rejects and thus to a higher productivity and to lower costs.
The invention is not limited to the fact that, in the case of the process, a least one brush cheek is inserted into the bristle receiving shaft before the stacking of the bristles. The at least one brush cheek may, for example, also be inserted into the bristle receiving shaft or formed therein after the stacking of the bristles into the bristle receiving shaft.
Preferably two brush cheeks are inserted into the bristle receiving shaft and the bristles are stacked such in the bristle receiving shaft that the bristles are partially situated between the two bristle cheeks. As a result, the bristles are particularly well mounted after their fastening on the two bristle cheeks.
An additional or alternative possibility, which can be carried out in a simple manner and with a high efficiency and durability, for fastening the bristles on the at least one brush cheek, according to the invention, preferably consists of melting the bristles in their area situated next to the at least one brush cheek by using,, for example, a laser, a plasma torch or a similar device. As a further development, during the melting of the bristle ends, material of the same type can be added with respect to the bristles and/or the at least one bristle cheek.
The fastening of the bristles on the at least one brush cheek can be promoted by another further development of the process according to the invention in that the bristles, before the introduction in the bristle receiving shaft for their stacking therein are subjected to a surface treatment in their area which comes to be situated next to the at least one brush cheek. In particular, such a surface treatment may comprise the application of a fastening agent or auxiliary adapted to the materials of the bristles and the brush cheek for the later fastening

REFERENCES:
patent: 3917150 (1975-11-01), Ferguson et al.
patent: 4274575 (1981-06-01), Flower
patent: 4642867 (1987-02-01), Hough et al.
patent: 5165758 (1992-11-01), Howe
patent: 5183197 (1993-02-01), Howe

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