EP0441107B1 - Cradle support with variable opening for rolls of material without a supporting shaft - Google Patents
Cradle support with variable opening for rolls of material without a supporting shaft Download PDFInfo
- Publication number
- EP0441107B1 EP0441107B1 EP90830581A EP90830581A EP0441107B1 EP 0441107 B1 EP0441107 B1 EP 0441107B1 EP 90830581 A EP90830581 A EP 90830581A EP 90830581 A EP90830581 A EP 90830581A EP 0441107 B1 EP0441107 B1 EP 0441107B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rollers
- roller
- cradle support
- rolls
- driven
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/10—Arrangements for effecting positive rotation of web roll
Definitions
- the present invention relates to means designed for transfering a roll of material onto a tenter during unwinding, and in particular regards a cradle support for rolls without support posts or shafts.
- a cradle support able to transfer a roll of material and make it rotate on its axis for the unwinding of the material is already available.
- Such a cradle support has a V-shaped transverse configuration and is formed by ribbons placed side by side which are driven on parallel horizontal rollers positioned at various levels.
- a cradle support of this type is known for example from documents WO-A-8904 123 and GB-A-2060 724.
- the first document describes a craddle support formed of three rollers, one at the bottom and two at the top, spaced like the corners of a triangle, and two sets of endless belts which diverge upwards.
- the first set of belts passes over the bottom roller and one of the top rollers, and the second set of belts alternates with the first and passes over the bottom roller and the other top roller.
- the second document describes a cradle support which differs from that of the first document only by the fact that there are two rollers at the base of the V and the two sets of belts are driven by the bottom roller and one of the top rollers, respectively.
- the known cradle supports have at least the following inconveniences:
- a coreless and centerless coiling system which is adapted for coiling continuous flexible material to a coil mass comprising a structure having at least two coextensive spaced members, with at least one of said members being rotatably mounted to swing with respect to the other of said members, an endless belt means encompassing said coextensive menbers, counterweight means for biasing said one rotatably mounted member upward toward the other of said members to form a downward tending pocket in said endless belt means between said spaced members when said structure is in an unextended position.
- the present invention aims to eliminate the above mentioned problems and provide a cradle support with variable position for a more advantageous,practical and easy use.
- the here proposed cradle support is substantially in accordance with the characterising part of claim 1. It has a V-shaped transverse configuration made up of a series of continuous single ribbons placed side by side, forming the two arms of the V-shape, that is to say a belt conveyor with an ascending and a descending arm due to a particular and specific placement of the driving and transmission rollers. Also, one of the arms of the cradle has a variable inclination so as to be able to correspondingly modify the opening angle of the cradle in accordance with the roll fitted.
- the arm can also be brought to a horizontal position, thus making the loading and unloading of the rolls much easier through an appropriate advancement of the belt conveyor made up of ribbons.
- the mentioned cradle support (10) is designed to hold a roll of material (11) ready to unwind in the direction of the arrow (F).
- Said cradle support (10) comprises a structure with two shoulders (12) between which a belt conveyor (13) is placed.
- Said belt conveyor having a V-shaped transverse configuration and made up of a number of ribbons (14) positioned side by side and driven on parallel rollers fitted between the shoulders (12) at various heights.
- said ribbons (14) are driven on a set of three central rollers (15, 15a, 15b) which are in a fixed position and form a V-shape. They then go up and pass over an upper fixed roller (16) then descend and pass over a lower fixed roller (17) where they turn back, beneath the set of three rollers (15, 15a, 15b) to the opposite side, passing over a movable roller (18) with variable positions, then returning towards the set of three central rollers.
- At least one of the fixed rollers (16) or (17) is driven in rotation by a motor (not shown) for the controlling of the advancement of the belt conveyor (13), the direction of which is shown by the arrow ( S ) for the unwinding of the material.
- the direction can be changed.
- An idler (19) is coordinated on the lower arm of the belt conveyor which extends from the lower fixed roller (17) on the side towards which the material unwinds, to the movable roller (18) on the opposite side.
- the movable roller (18) is carried by oscillating arms (20) which, for example, move on the axis of the roller (15a) of the centre three rollers and is engaged by a movement actuator (21) (Fig. 2).
- the idler (19) is fitted on said oscillating arms (20) so that it is correspondingly positioned and always keeps the correct tension of the ribbons even, when changing the position of the movable roller (18).
- This movable roller can infact be positioned above due to an angular movement of its oscillating arms (20) by the use of the actuator (21). In this way, the general position of the cradle can be varied by changing the opening angle between the ascending and descending arms of the belt conveyor from time to time, this belt conveyor being between the movable roller (18) and the upper fixed roller (16) and is defined at the top by the set of three rollers (15, 15a, 15b).
- the position of the cradle support can in this way be adjusted to every need and in accordance with the rolls of material fitted.
- the movable roller can be moved below until one of the arms of the V-shaped belt conveyor reaches a horizontal position, (Fig. 1), so as to help the loading and unloading of the rolls through the movement of the belt conveyor, even in the opposite direction of the arrow ( S ) during the unloading of the rolls.
Landscapes
- Replacement Of Web Rolls (AREA)
- Coating With Molten Metal (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT691990U IT221209Z2 (it) | 1990-02-07 | 1990-02-07 | Supporto a culla ad apertura variabile particolarmente per rotoli di stoffa senza albero di sostegno |
IT691990U | 1990-02-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0441107A1 EP0441107A1 (en) | 1991-08-14 |
EP0441107B1 true EP0441107B1 (en) | 1993-08-11 |
Family
ID=11122343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90830581A Expired - Lifetime EP0441107B1 (en) | 1990-02-07 | 1990-12-13 | Cradle support with variable opening for rolls of material without a supporting shaft |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0441107B1 (it) |
DE (1) | DE69002752T2 (it) |
ES (1) | ES2044533T3 (it) |
IT (1) | IT221209Z2 (it) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3501106A (en) * | 1968-06-25 | 1970-03-17 | Anchor Post Products Inc The | Coreless and centerless coiler |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1123318B (it) * | 1979-09-25 | 1986-04-30 | Rockwell Rimoldi Spa | Dispositivo svolgitore-alimentatore delle pezze in rotolo per macchine faldatrici |
US4676494A (en) * | 1984-03-05 | 1987-06-30 | Cutters Exchange, Inc. | Cloth support and feed apparatus for cloth spreading machine |
DK585187A (da) * | 1987-11-09 | 1989-05-10 | Niebuhr Maskinfabrik | Fremgangsmaade og oplaegningsmaskine til oplaegning af en stabel af stofbaner paa et oplaegningsbord |
-
1990
- 1990-02-07 IT IT691990U patent/IT221209Z2/it active IP Right Grant
- 1990-12-13 DE DE1990602752 patent/DE69002752T2/de not_active Expired - Fee Related
- 1990-12-13 EP EP90830581A patent/EP0441107B1/en not_active Expired - Lifetime
- 1990-12-13 ES ES90830581T patent/ES2044533T3/es not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3501106A (en) * | 1968-06-25 | 1970-03-17 | Anchor Post Products Inc The | Coreless and centerless coiler |
Also Published As
Publication number | Publication date |
---|---|
IT9006919V0 (it) | 1990-02-07 |
DE69002752D1 (de) | 1993-09-16 |
IT221209Z2 (it) | 1994-02-17 |
ES2044533T3 (es) | 1994-01-01 |
DE69002752T2 (de) | 1993-12-09 |
EP0441107A1 (en) | 1991-08-14 |
IT9006919U1 (it) | 1991-08-08 |
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