Advancing material of indeterminate length – Plural material-moving means – With plural paths for material
Patent
1998-03-03
2000-04-04
Mansen, Michael R.
Advancing material of indeterminate length
Plural material-moving means
With plural paths for material
226143, 219 6912, 242131, 2425644, B65H 2024, B65H 4902, B23H 700
Patent
active
060450231
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to the field of feeding machines with wire, outside the field of the textile and clothing industry.
STATE OF PRIOR ART
In mechanics, a number of machines use or consume wire, and consequently need a wire feed device and means for changing the wire., For example this is the case for wire electroerosion machines, in which it is necessary to do machining with different diameters of wires.
U.S. Pat. No. 5,237,145 thus describes a device for automatically changing the wire on an electroerosion machine, and for example changing from a given diameter wire to a smaller diameter wire to perform finer machining.
As is clearly shown in FIG. 1 in this US patent, this device is defined mainly by two characteristic elements: provided with motors (US references 24, 26) and a guide tube (US references 154a and 154b), devices corresponding to the two types of wires, and means for installing the active device and then removing it and replacing it by the other device, 151a, 151b) to align it with electroerosion machine wire guide elements (US references 153a and 153b), and to bring it close to these guide elements using a guide screw (US reference 18) aligned with these guide elements and a motor (US reference 20).
Similarly, European patent application No. EP-A-0 581 493 describes a device for changing the wire on an electroerosion machine, with a wire reel feed in which the ends of the wires are welded together.
There is also Japanese application JP-A-61 121832 in which the wire is changed using an electroerosion machine provided with a feed guide tube that can be directed towards either of the two reels of wire feeding the electroerosion machine.
PROBLEM THAT ARISES
The solution to the problem of changing ware provided by the feed devices described above in the state of prior art section has four different types of disadvantages:
1) on the one hand, these devices are only suitable for a single electroerosion machine and for a limited number of wires (two wires in each of the three documents mentioned). Note also that due to cost and size problems, the state of prior art solution only allows the presence of a limited number of feed wires (two in the three documents mentioned) or feed devices, which is a disadvantage to the extent that it would be desirable to have at least four feed devices particularly for machining with a wire electroerosion machine, two corresponding to the different wire diameters, and two on standby in case the wires should break. a number of different electroerosion machines. Most frequently, with devices made according to the state of prior art, the devices would have to be provided in large numbers, by duplicating the equipment for each individual machine, which increases costs, impose alignment constraints with the electroerosion machine and therefore these devices are practically part of it, which correspondingly increases the total size occupied by the machine at the machining location, configurations in which it is desirable that machines, particularly electroerosion machines are not encumbered with wire reels, these wire reels intended to feed said devices preferably being used to supply an entire group of machines and being stored separately.
OBJECT OF THE INVENTION
The object of the invention is a multiple feed device that solves the problems mentioned above.
This object is not limited to the particular type of electroerosion machine mentioned in the state of prior art.
SUMMARY OF THE INVENTION
The multiple feed device for feeding at least one machine with a selected wire according to the invention comprises: n varies from 2 to any number, as there are wires F.sub.i to be selected, each device DA.sub.i being fed from wire packaging C.sub.i by means of input side guide means GM.sub.i, with wire, said selected wire F.sub.i, and in which,
This feed device includes a means of cutting the wire which can be built into the feed device, or into the distributor or into the receiving device.
The input side and output side guide means, typicall
REFERENCES:
patent: 3694620 (1972-09-01), Gleason
patent: 4645894 (1987-02-01), Bonga
patent: 4655379 (1987-04-01), Busch
patent: 5053598 (1991-10-01), Sakai et al.
patent: 5237145 (1993-08-01), Magara et al.
patent: 5275034 (1994-01-01), Del Fabro et al.
patent: 5340958 (1994-08-01), Okazaki et al.
patent: 5450777 (1995-09-01), Molnar et al.
Japanese Patent Abstract, Publication No. JP61121832, Sep. 1986.
Mansen Michael R.
Trefimetaux
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