DE202012002885U1 - wire grinding machine - Google Patents

Abstract

Rotating grinding unit, which abrasively processes a steel or non-ferrous metal wire or pipe running in the middle in order to remove scaling and impurities, characterized - 1 that two rotating grinding belts of the same length, arranged opposite one another on a rotating flyer disc, perform the grinding work. 2 that endlessly unwound wire or pipe can be processed. 3 that different wire and pipe diameters can be processed 4 that for ecological and energetic reasons no pneumatic and hydraulic components are installed. 5 that, from an ecological and energetic point of view, a motor is installed for all rotating functions. Alternatively, two can be installed for independent control of the flyer and sanding belts. 6 that the machine was designed to be transportable with a single-cable solution for universal and quick change on various wire drawing machines. 7 that the machine can be used with speed control for a wide variety of diameters and materials.

Description

The wire grinder developed by us has considerable technical advantages compared to the state of the art. The novel approach to descaling and cleaning heat treated, endlessly wound steel and non-ferrous metal wires of all kinds is an important application both in environmental engineering and in energy terms. Previously, wire was descaled by chemical pickling or cleaned by blasting , Both processes are environmentally and energetically only with great effort, not risk-free operation. Previous grinding processes failed because of economic efficiency, technical problems, low throughputs and large required conversions of existing plants. The machine is transportable and can therefore be used quickly in any wire drawing line. The wire machined by our machine is guided centrally through the axis of rotation. The wire pull is generated by upstream straightening rollers after unwinding and arranged after the grinding system pulling and winding system. Around the tensioned wire rotate abrasive belts, which provide opposite equal mass ratios. Thus, a high rotation of the rotating basic structure can be achieved.

A variable speed motor with low power operates all drives. A disc brake ensures fast standstill in the emergency stop case. The rotational movement of the basic structure can be decoupled from the drive of the abrasive belt shafts. This allows a precise and safe adjustment of the sanding belts. Speed and power can be changed at any time through more powerful engines and other gear ratios.

Patent search:

We found the following patents on the Internet and in publications, which initially resemble our solution.

patent EP 0433541 - Jung Maschinenbau represents a machine with which the wire is cleaned by rotating grinding wheels (grinding heads). This structure is not comparable with our abrasive belt principle. The patent has expired due to non-payment.

GB patent 1111509 - Fa. Conti has developed a machine that works by three rotating grinding wheels at a staggered position. Again, there is no similarity with the belt grinding technique.

Patent P 31 63 566.0 - Schläfli Engeneering has a wire grinding machine for conical wires on the market. This does not work in the unwinding process, but uses cut wires. The patent has expired due to non-payment.

patent EPN2335875 - Mevert GmbH has patented a current machine that grinds curved surfaces (including wire). The principle works on the free band, which is wrapped around the structure. This type of arrangement requires a huge space requirement (about 10 m). The company VSM (supplier of abrasives) develops at this plant.

We are informed about the functionality, a publication with photo is also available. There are no points of contact in construction and construction.

For us it was very important to keep the machine as small as possible (about 1.2 m). This allows use in any wire drawing line. Furthermore, this machine can be implemented by industrial trucks at any time.

We searched for the following products: wire grinder, wire belt grinder, belt grinder for wire u. The selection under belt grinder also gave no indication of the existence of a patent or utility model protection.

With regard to the REACH Regulation of Helsinki, which came into force three years ago, it would be quite possible to use abrasive grinding to substitute the cleaning process of wire in its previous type of chemical pickling.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0433541 [0004]
• GB 1111509 [0005]
• EP 2335875 [0007]

Claims (1)

Rotary grinding unit that abrades a centered steel or non-ferrous metal wire or pipe to remove scaling and debris, characterized in that - two equal-length driven rotating abrasive belts arranged opposite one another on a rotating flyer disc perform the grinding work. 2 that endlessly unwound wire or pipe can be processed. 3 that different wire and pipe diameters can be machined 4 that no pneumatic and hydraulic components are installed for environmental and energy reasons. 5 that, from an ecological and energetic point of view, one motor is installed for all rotating functions. Alternatively, two can be installed for the independent control of flyers and sanding belts. 6 that the machine was designed to be transportable with a single-cable solution for universal and quick change on various wire drawing machines. 7 that the machine can be used with speed control for a wide variety of diameters and materials.

Images