US 8,282,032 B2Granted

Pre-wound sheet cut-off mechanism for thin material sheet winding device and method thereof

AssigneeChan Li Machinery Co., Ltd.

InventorTung-I Tsai

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Abstract

Disclosed is a pre-wound sheet cut-off mechanism of a thin material sheet winding device, including a first winding roller, a plurality of curved guide plates arranged at a predetermined distance below the first winding roller and distributed and spaced from each other by a predetermined distance along an axial direction of a shaft of the first winding roller, a plurality of pre-winding plates each coupled between adjacent curved guide plates, a second winding roller, and a rider roller. In a winding operation, a core is conveyed into a curved-guide-plate channel defined between the first winding roller and the curved guide plates to adhere to and pre-wind a thin material sheet that is conveyed to the first winding roller, and is thereafter transported to a winding nip to form a roll with the thin material sheet. The winding speed of the roll is reduced for preparing a next core to reach the pre-winding plates, accordingly, the thin material sheet is slacked, such that the slacked thin material sheet can be pre-wound, thereafter, the thin material sheet pre-wound continuously and the thin material sheet is gradually tensioned on the next core until the thin material sheet is torn apart.

Claims6

Dependent claims

A pre-wound sheet cut-off mechanism for a thin material sheet winding device, comprising:

a first winding roller supported by a shaft to be rotatable in a predetermined direction;
a plurality of curved guide plates arranged at a predetermined distance below the first winding roller to form a curved-guide-plate channel therebetween, the curved-guide-plate channel having a core loading end and a core unloading end, the curved guide plates being distributed and spaced from each other by a predetermined distance along an axial direction of the shaft;
a plurality of pre-winding plates individually coupled between adjacent curved guide plates;
a second winding roller arranged at a location close to the core unloading end of the curved-guide-plate channel;
and
a rider roller arranged above the core unloading end of the curved-guide-plate channel, wherein a winding nip is formed between the first and second winding rollers;
wherein in a winding operation, a core applied with an initial glue is introduced into the curved-guide-plate channel through the core loading end, and a thin material sheet is stretched against and conveyed by the first winding roller to wind about the core, the core being transported by the first winding roller through the curved-guide-plate channel to the winding nip to carry out the winding operation, whereby a thin material sheet roll is formed about the core upon finishing the winding operation, and
wherein winding speed of the thin material sheet roll is reduced as a next core introduced into the curved-guide-plate channel reaches the pre-winding plates to generate slack in the thin material sheet, a portion of the thin material sheet being thereby released to fall away from the first winding roller and pre-wind about the next core;
wherein according to a torque brought from rotating the next core, the slack in the thin material sheet is taken up by continued pre-winding about the next core, and a tension on the thin material sheet increases until the thin material sheet is torn apart.

6 more elements

A method for cutting off a pre-wound thin material sheet in a thin material sheet winding device by using a pre-wound sheet cut-off mechanism that comprises a first winding roller, a plurality of curved guide plates, a plurality of pre-winding plates, a second winding roller, and a rider roller, wherein the first winding roller is supported by a shaft to be rotatable in a predetermined direction, the curved guide plates being arranged at a predetermined distance below the first winding roller to form a curved-guide-plate channel therebetween, the curved-guide-plate channel having a core loading end and a core unloading end, the curved guide plates being distributed and spaced from each other by a predetermined distance along an axial direction of the shaft, the pre-winding plates are individually coupled between adjacent curved guide plates, the second winding roller being arranged at a location close to the core unloading end of the curved-guide-plate channel, the rider roller being arranged above the core unloading end of the curved-guide-plate channel and forming a winding nip with the first and second winding rollers, the method comprising the following steps:

(a) conveying a core applied with an initial glue into the curved-guide-plate channel through the core loading end;
(b) adhering a thin material sheet stretched against and conveyed by the first winding roller to wind about the core;
(c) transporting the core to the winding nip for subsequent winding to form a roll;
(d) reducing the winding speed of the roll as a next core introduced into the curved-guide plate channel reaches the pre-winding plates to generate slack in the thin material sheet, a portion of the thin material sheet being thereby released to fall away from the first winding roller and pre-wind about the next core;
(e) pre-winding the thin material sheet by means rotating the next core;
and
(f) continuously pre-winding about the next core to take up the slack in the thin material sheet and a tension on the thin material sheet increases until the thin material sheet is torn apart.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/458,979Filed 29 Jul 2009
Priority: TW 97146164 A28 Nov 2008
Published: US 2010/0133312 A13 Jun 2010
Granted: 9 Oct 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B65H 23/1882
In connection with running-web: and controlling longitudinal register of web
B65H 19/2269
The web roll being driven by a winding mechanism of the nip or tangential drive type: cradle
B65H 19/267
Cutting-off the web running to the wound web roll: by tearing or bursting
B65H 2511/411
Identification: of colour