Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1991-02-13
1992-09-01
Stodola, Daniel P.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 65, 242 672, 242 751, B65H 1800, B65H 1808, B65H 2024, B65H 8106
Patent
active
051433141
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to an apparatus for winding a ply of an insulating material on to a core to form a chute, comprising a movable, endless belt arranged to be bent around the core for the time of the winding so that the insulating material ply can be wound on to the core between it and the belt.
The winding of insulating material plies often forms part of a process for the manufacture of insulating chutes, wherein cores with insulation material wound thereon are cured; the cured insulation, is possibly coated with an aluminium foil, for instance; the insulation is sawed open into a chute; and the chutes are removed from the cores, whereafter the empty cores are recycled to the winding step. In general, the cores are transported by an endless conveyor.
In prior art apparatuses, the winding is carried out while the core is positioned on the conveyor. Previously, the lever movements required for bending the belt of the winding means around the core have been long and have required plenty of space. Variation in the chute diameter has been possible within very narrow limits only.
SUMMARY OF THE INVENTION
The object is to provide a new insulation winding apparatus which eliminates the above-mentioned drawbacks and, in particular, is suitable for winding insulation chutes of widely varying diameters.
The winding apparatus according to the invention is mainly characterized in that in the winding area of the belt, outside both edges of the belt, is provided a means turning perpendicularly to the plane of the belt between a position of readiness and a winding position; that the belt is arranged to pass via a roll mounted on the turnable means so as to follow their movement, said roll being displaceable between two positions at different distances from the turning shaft of the turnable means, the position closer to the turning shaft being the winding position of said roll; and that means are provided in connection with the turnable means for displacing an empty core from a receiving position to a winding position and for displacing a wound core from the winding position to a delivering position.
In a preferred embodiment, the winding position of the core is in alignment with the turning shaft of the turnable means, whereat the diameter of the wound core can be varied conveniently within wide limits.
Further preferred embodiments of the winding apparatus appear from the following description, in which a preferred embodiment shown schematically in the attached drawing is referred to, by way of example.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side view of the winding apparatus.
FIG. 2 is a vertical section along the line II--II in FIG. 1.
FIGS. 3 to 13 show the main steps of the winding process seen from the side .
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the drawing, the reference numeral 1 designates an endless winding belt; and 2 designates a drive roll for the belt 1. The reference numerals 3 and 4 designate fixedly mounted turning rolls which rotate passively; 5 designates a working cylinder the piston rod of which is provided with a turning roll 6 for maintaining the desired tightness of the belt. The single drive roll 2 could be replaced with, e.g., three drive rolls provided with a common chain drive and arranged principally in the same way as the rolls 2, 6 and 4 shown in the drawing, whereby an improved friction transmission is provided when the belt 1 is loose.
The reference numeral 7 designates a so called main conveyor commonly used in the manufacture of chutes; 8 designates an empty core transported to the winding apparatus; and 9 designates a core with an insulation wound thereon when it is being transported to a curing step, for instance.
The reference numeral 10 designates two discs rotatable on a bearing 12 of a shaft 11 by means of a chain transmission 14 driven by a motor 13. A pneumatic or hydraulic cylinder 15 is fastened to each disc 10, and a support 16 engageable with a journal 8' of the core 8 is provided in the end of the piston rod o
REFERENCES:
patent: 1959418 (1934-05-01), Fourness
patent: 2742240 (1956-04-01), Stephens et al.
patent: 3161363 (1964-12-01), Press
patent: 3848823 (1974-11-01), Mitchell
patent: 4191341 (1980-03-01), Looser
patent: 4830808 (1989-05-01), Bichot et al.
Nguyen John Q.
Oy Partek Ab
Stodola Daniel P.
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