Abrading – Machine – Endless band tool
Patent
1997-08-05
1999-09-14
Scherbel, David A.
Abrading
Machine
Endless band tool
451531, 451489, 451399, B24B 2100
Patent
active
059513837
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
This invention relates to a grinding and polishing belt and particularly to grinding and polishing belts which after separation can be rejoined and a method of rejoining the belts.
BACKGROUND OF THE INVENTION
Grinding and polishing belts in the form of endless belts are used for grinding and polishing of circular pipes, circular wood or similar articles. For this, the grinding belt is, either pushed laterally onto the workpiece to be machined or placed around a grinding belt drive roller of a belt grinding unit. In order to be able to grind or polish enclosed constructions, in which the sliding-on of the grinding belt from the side is not possible, the grinding belt must be cut through to wrap around the item to be machined and then rejoined to form a ring once again. Hitherto the grinding belt was rejoined so that the belt, placed together to form the ring, was bonded over, over its entire length using special tape. This method was indeed very effective and reliable, but on the other hand very time-consuming. In addition, a considerable quantity of woven tape is needed.
SUMMARY OF THE INVENTION
The object of the present invention is, therefore, to make available grinding and polishing belts which can be re-sealed again by a more simple method than hitherto employed. In addition, the length of the endless bands should be made variable by a particular simple method. Furthermore it should enable multi-separation and resealing of the belts to be effected. These tasks are accomplished by the grinding and polishing belts in accordance with the present invention.
In this regard, the invention relates to endless belts, or in other words belts which are closed to form a ring. Such types of belts are basically set forth in the prior art. They comprise a belt-like base, which can be made, for example, from a woven material made of natural or synthetic fibers, for example, cotton or polyester belting could be assigned. One face of the belt is coated with a grinding medium or polishing medium. Examples of such grinding media and polishing media are grinding grit of differing grit size, woven fleece or felt.
This invention is not confined to any particular grinding or polishing belts, but is suitable for all types of such belts. The invention is now described with the aid of grinding belts in the following, without, any restriction being imposed to these alone. Accordingly, the present invention applies to other types of belts as well.
According to a first aspect of the invention, the grinding belt is coated with an adhesive on its rear face not coated with a grinding medium, at least over a part section of its circumference, which if required is covered by a peelable protective film. Advantageously this part section has a length of at least 3 to 4 cm, by way of example a length of 3 to 10 cm and in particular 4 to 6 cm.
Appropriately, the adhesive coating is applied over the entire width of the belt. Advantageously, only a part section is coated with adhesive for each endless belt. However, it is also possible to provide two or more sections having adhesive coatings displaced over the circumference of the grinding belt.
The resealable joint described hereinabove is particularly easy to manufacture and very practicable, wherein the adhesive coating is applied at the joint to the original abutment point of the belt on the rear face of the overlay used originally for initial sealing.
Advantageously, the sections of the grinding belt coated with adhesive may be color marked, for example by dyeing the grinding belt base material. It is particularly desirable to mark additionally the center of each part section by a transverse line or the like.
If, for example, it is intended to grind away a part of the pipe now inaccessible from the sides using the grinding belt according to the invention, the grinding belt is to be severed in the region of the part section provided with adhesive. It is particularly desirable for the separation to be made in the center part of the section, since in t
REFERENCES:
patent: 3154897 (1964-11-01), Howard
patent: 3333372 (1967-08-01), Gianatasio
patent: 3729873 (1973-05-01), Sandell
patent: 4788798 (1988-12-01), DeFranco et al.
patent: 5341609 (1994-08-01), Gorsuch et al.
Gerd Eisenblaetter GmbH
McDonald Shantese
Safran David S.
Scherbel David A.
Studebaker Donald R.
LandOfFree
Grinding and polishing belt does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Grinding and polishing belt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Grinding and polishing belt will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1503775