Manufacturing container or tube from paper; or other manufacturi – Tube making – Frustoconical tube
Patent
1981-02-27
1983-08-16
Coan, James F.
Manufacturing container or tube from paper; or other manufacturi
Tube making
Frustoconical tube
493155, 493299, B31C 702
Patent
active
043989047
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
In the manufacture of e.g. cardboard and paste board, the board web is wound into a roll from which are cut off rolls of the width of web ordered by the customers. One consequence is waste material in the form of board rolls of different lengths. Hitherto, this waste material has not found any practical application except as waste paper which is shredded to be re-used in the paper manufacture.
The purpose of the subject invention is primarily to provide a practical application for such waste material by using it to produce the conical bodies of receptacles. For this purpose, the waste material is cut into webs of a width of e.g. 40-60 millimeters which webs are wound in overlapping relationship, one winding turn partly overlapping the previous one, and glued together to form the conical bodies of receptacles of various kinds and intended for various purposes. At their smaller end the receptacles are formed with an inner shoulder on which a bottom piece may be supported. Also at their larger ends, the receptacles are preferably formed with an inner shoulder on which a lid may be supported. This is the case when the receptacles are used to hold e.g. granular or particulate materials.
The subject invention concerns a machine for producing the conical bodies of receptacles of this kind, using preferably waste material of the nature referred to above. The machine comprises a rotatably driven shaping member having a conical jacket face, a frame supporting a web of material in the form of a narrow strip wound into a roll, which web is intended to be used to form the conical receptacle bodies by being wound about the shaping member, a device adapted to removably secure the starting end of the material web to the smaller end of the shaping member, and a device to effect axial displacement of the shaping member relatively to the support frame during the rotation of the shaping member for the purpose of winding the web of material in helical winding turns around the conical jacket face of the shaping member while ensuring that the winding turns only partly overlap and adhere to each other with the aid of an adhesive.
SUMMARY OF THE INVENTION
It is characteristic of the invention that at its smaller end the shaping member is provided with a cylindrical portion the diameter of which is slightly smaller than the smallest diameter of the conical jacket face of the shaping member, that a guide lid is arranged to be moved towards the smaller end of the shaping member so as to cover said end for the purpose of guiding the web of material while the latter is being wound onto the shaping member, that a pair of jaws are arranged at the smaller end of the shaping member, one of the jaws being stationary while the other one is arranged for displacement towards and away from the stationary jaw, to clamp the starting end of the web of material to the shaping member, and that a slit is provided in the cylindrical portion of the smaller end of the shaping member, which slit is open towards the smaller end of the shaping member so as to allow reception therein of the starting end of the web which is introduced into the slit by means of a feeder arm to be clamped between the jaws.
BRIEF DESCRIPTION OF THE DRAWINGS
Further characteristics of the invention will appear from the following detailed description with reference to the accompanying drawings, wherein
FIG. 1 is a lateral view of a machine in accordance with the invention showing the various components of the machine at the beginning of the winding operation,
FIG. 2 is a similar lateral view of the machine showing the positions of the various components after completed winding operation,
FIG. 3 is an end view of the machine, seen from the right with regard to FIGS. 1 and 2,
FIG. 4 is a view of the opposite end of the machine,
FIG. 5 illustrates on a somewhat larger scale and in a lateral view the disengagement device indicated in FIG. 4,
FIG. 6 illustrates on an enlarged scale the lower end of the web feeder arm provided with a scissor-like mean
REFERENCES:
patent: 1270890 (1918-07-01), Snyder
patent: 2013748 (1935-09-01), Dunlap
patent: 3095156 (1963-06-01), Warnken
patent: 3402091 (1968-09-01), Trimble
Coan James F.
Inlands Aktiebolag
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