Spool transfer coil wrapping machine

Details Spool transfer coil wrapping machine Spool transfer coil wrapping machine

2000-03-23

2001-12-04

Kim, Eugene (Department: 3721)

Package making

Partial cover application

Band or tube

C053S399000, C053S204000

Reexamination Certificate

active

06324820

ABSTRACT:

FIELD OF THE INVENTION
This invention relates to a machine for wrapping a web of paper or film around an endless coil or the like, particularly a coil of metal strip, and to such a machine which transfers a web spool from one portion of the machine to another.
BACKGROUND OF THE INVENTION
It is well known to make a machine for the purpose of wrapping an electrical coil, a coil of metal strip or the like with paper or film which can be stretchable film. The paper or film performs insulating and protective functions without interfering with the operation of the coil, if it is an electrical coil, in a motor or other apparatus. The article to be wrapped is generally toroidal, i.e., it is usually a circular or rectangular article with a hole or eye through the middle and the objective is to wrap the film or paper through the eye so that it covers the torus without blocking the hole.
Some such machines of the prior art use a traveling spool which carries the wrapping material (hereinafter generically referred to as “film”) around a generally circular track which has an opening to permit engagement of the track with the torus. A portion of the track can be moved or removed so that the track can be inserted partially through the opening, after which the moved portion of the track is replaced.
While this system works reasonably well, manufacture of the track and its support structure, which is usually oval or circular, presents some special problems which make the manufacture difficult and expensive.
SUMMARY OF THE INVENTION
An object of the invention is to provide a machine for coil wrapping which permits the use of individual essentially straight members to support and transport one or more rolls or spools of film or paper around a coil through the eye of the coil with the moving spool or spools being transferred from one straight member to another as the coil is wrapped.
Briefly described, the invention comprises a wrapping machine for wrapping a generally toroidal body having an opening therethrough with an elongated length of wrapping material. The machine includes means for supporting a body to be wrapped with the central axis of the opening through the body in a predetermined position and a shuttle for carrying a spool of wrapping material and for the controlled dispensing of said wrapping material. A wrapping frame has four transfer assemblies arranged in a generally rectangular array, one of the transfer assemblies being positionable through the opening in the body. The transfer assemblies include first and second transfer assemblies each having rails for receiving the shuttle at one end and conveying the shuttle to the opposite end, the first and second transfer assemblies being positioned at opposite sides of the rectangular array. Third and fourth transfer assemblies each have a shuttle carrier and means for conveying the shuttle carrier from one end of the transfer assembly to the other end thereof, the third and fourth transfer assemblies being positioned at opposite sides of the rectangular array and interconnecting ends of the first and second transfer assemblies. The shuttle carriers are each adapted to receive a shuttle from the rails of one of the first and second transfer assemblies, carry the shuttle along the length of one of the third and fourth transfer assemblies and release the shuttle to the rails of the other of the first and second transfer assemblies for conveyance to the carrier on the other one of the third and fourth transfer assemblies while dispensing wrapping material to wrap the coil.


REFERENCES:
patent: 3168032 (1965-02-01), Faulkner
patent: 4230519 (1980-10-01), DuBroff
patent: 4829753 (1989-05-01), Briemont
patent: 5079899 (1992-01-01), Kurachi
patent: 5282347 (1994-02-01), Cleine et al.
patent: 5404691 (1995-04-01), Scherer
patent: 5540142 (1996-07-01), Mieleszuk et al.
patent: 5560180 (1996-10-01), Rodriguez et al.
patent: 5755083 (1998-05-01), Cleine

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