Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1992-01-22
1994-05-03
Jillions, John M.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 65, B65H 1816, B65H 3502
Patent
active
053080068
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a national phase of PCT/EP91/00604 filed Mar. 28, 1991 and based upon German National Application P40 14512.3 of May 7, 1990, under the International Convention.
FIELD OF THE INVENTION
The invention concerns a device for the winding-up of material webs, especially paper webs or cardboard (paper board) webs on winding tubes.
BACKGROUND OF THE INVENTION
From the article "Roller Cutters and Roll Machines For the Paper Equipment, Part 3" in COATING 1/89, pages 8-12, a winding up device of this type is known which has a driven support roller and winding stations arranged on both sides of the support roller. Each winding station is comprised of two swingable support arms, each of which is equipped with a respective hydraulic winding drive. The two hydraulic motors of a winding station are connected in parallel and are fed from a hydraulic variable displacement pump.
Hydraulic drives have relatively small sizes for high powers, but it has been found that their use in winding machines brings disadvantages; that is outside of the winding machine large hydraulic installations are required and the adjustment of the winding station in the case of size changes presents problems. Because of the requisite high pressure (for example 300 bar) in the feed piping, these are very stiff and can be brought into the required new positions in a format change only with difficulty. In addition the requisite control is very complex with hydraulic drives.
OBJECT OF THE INVENTION
The object of the present invention is to provide a winding machine having the coiling stations adjusted in a problem free manner to different formats, especially to very small formats.
SUMMARY OF THE INVENTION
Liquid cooled electric motors provide the required acceleration power and braking power with relatively small structural size. The size of the motor is of significance since the support elements (for example rolling brackets) with the motors must be brought to the smallest possible spacing from one another for small format widths. Indeed, the liquid cooled motors require supply piping for the cooled liquid, but the requisite pressure in the piping is significantly less than that for the hydraulic in the supply piping of hydraulic drives. It has been shown that a coolant liquid pressure of 0.1 bar suffices. Because of the low pressure, the supply piping is highly bendable and can have its position adjusted without problems upon a format change.
The dependent claims recite especially advantageous embodiments of the invention. The use of a polyphase [three phase] alternating current asynchronous motor according to one of the embodiments enables an especially small motor volume with high power since, with these motors, the heat generation is effected primarily in the stator coil and control via a frequency converter is least expensive.
BRIEF DESCRIPTION OF THE DRAWING
The above and other objects, features and advantages of the invention will become more readily apparent form the following description, reference being made to the accompanying highly diagrammatic drawing in which:
FIG. 1 is a side elevational view of a support roll coiling machine according to the invention.
SPECIFIC DESCRIPTION
The material web 1, drawn from a supply roll not illustrated, in the present example a paper web, is fed via guide rollers 2-7 from above onto the driven support roller 8. To both sides of the support roller 8, coiling stations 9 and 10 are arranged and each is comprised of two support elements displaceable parallel to the support roller axis. In the present example, the support elements are coiling brackets 11, 12 although the use of swingable support arms is possible. Each winding bracket 11, 12 carries on its upper side a slide 13, 14 displaceable radially to the support roller 8. A drive head 15, 16 with its rotary drive 17, 18 is fastened. The drive heads 15, 16 are insertable into the coiling sleeves of the coiling rolls 19, 20 to hold and drive them.
Polyphase alternating current as
REFERENCES:
patent: 2984427 (1961-05-01), Rockstrom
patent: 3198453 (1965-08-01), Aaron
patent: 3350026 (1967-10-01), Amos
patent: 3503567 (1970-03-01), Casey
patent: 3871598 (1975-03-01), Kataoka
Dubno Herbert
Jagenberg Aktiengesellschaft
Jillions John M.
Kateshov Yuri
Wilford Andrew
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