US20160272455A1 - Winding device - Google Patents
Winding device Download PDFInfo
- Publication number
- US20160272455A1 US20160272455A1 US15/029,346 US201415029346A US2016272455A1 US 20160272455 A1 US20160272455 A1 US 20160272455A1 US 201415029346 A US201415029346 A US 201415029346A US 2016272455 A1 US2016272455 A1 US 2016272455A1
- Authority
- US
- United States
- Prior art keywords
- web
- winding
- edges
- blade
- winding device
- 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.)
- Abandoned
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
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/28—Wound package of webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/28—Folding in combination with cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4143—Performing winding process
- B65H2301/41432—Performing winding process special features of winding process
- B65H2301/414322—Performing winding process special features of winding process oscillated winding, i.e. oscillating the axis of the winding roller or material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4148—Winding slitting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/45—Folding, unfolding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/515—Cutting handled material
- B65H2301/5155—Cutting handled material longitudinally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/50—Vibrations; Oscillations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/13—Parts concerned of the handled material
- B65H2701/131—Edges
- B65H2701/1315—Edges side edges, i.e. regarded in context of transport
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/175—Plastic
- B65H2701/1752—Polymer film
Definitions
- the invention relates to a winding device for winding a travelling web of material, said winding device comprising at least one blade for slitting the web of material in the web direction into several partial webs of material and comprising a folding device for folding over the edges of the partial webs of material.
- a winding device of this type is known from the U.S. Pat. No. 8,221,298 B2 and is used, in particular, for winding stretch films.
- Stretch films are used to secure and package individual items, for example, on pallets. At the same time the items are wrapped with the stretch film, so that the items are connected to each other with the aid of the self-adhesive stretch film.
- the stretch film is more resistant to damage if the edges are folded over or creased before the stretch film is wound on a roll, with the effect that the stretch film is less likely to tear.
- the edges are folded over, the result is that the edges of the roll of film will be inadmissibly thick and hard during straight edge winding.
- the object of the present invention is to provide a winding device that allows a web of material to be wound with folded edges in the simplest possible manner and without folds.
- This object is achieved by means of an oscillating device, with which the at least one blade can be moved transversely to the direction of the web.
- an essential element of the invention is the feature of oscillating the cutter bar, used for slitting the reel, transversely to the direction of the film.
- the devices for folding over the edges after slitting the reel are fixed either on the same cutter bar and execute accordingly the same oscillatory motion as the blades, or said folding devices are attached to a bar, which is located downstream of the cutter bar and which executes an oscillatory motion that is synchronized with the cutter bar.
- the folded over edges are laterally offset on the resulting stationary reel, and a winding with reduced edge structure is possible.
- the stroke and frequency of the motion are adjustable and can be adapted, if desired, as a function of the web speed, the film thickness and the increasing diameter of the roll, so that the result is an optimal edge geometry.
- the subsequent folding device for producing the folded side edge there are a number of variants.
- One variant consists of the feature that one folding device is provided for each folded over edge.
- Each of these folding devices can be used either directly side by side or one after the other. It is also conceivable that the devices for folding over the edges dip centrally into the slit in order to start up, so that they have an effect on both edges; and, in the course of dipping, said folding devices are altered in position or shape due to the appropriate kinematics in such a way that they only affect one edge. This can be done either simultaneously or sequentially for adjacent edges.
- Another variant of a folding device consists of the feature of producing a strip cut-out of several reels and of removing said strip cutout by suction. Then it would be possible to produce a space between the two edges by means of the strip cutout, a design that allows the respective edges to be folded over separately.
- the invention has a number of advantages over the prior art.
- the oscillating device comprises a driven belt, to which the at least one blade is attached.
- the belt may be, for example, a continuous toothed belt, which is moved by a gearwheel, which is driven by an electric motor.
- the oscillating device comprises a cutter bar, which is driven by a linear motor and to which the at least one blade is attached.
- a control unit for actuating the oscillating device is provided.
- the control device can be used to specify all possible movements or, more specifically, slitting patterns.
- the thickness profile of the wound roll is continuously measured; and the oscillating device is actuated, as a function of the measured thickness profile, in such a way that the result is a thickness profile that is as uniform as possible.
- the invention may be applied in a particularly advantageous way to the winding operation of stretch films that were produced on a cast film extrusion line or a blown film line.
- FIG. 1 a first embodiment of the invention
- FIG. 2 a second embodiment of the invention.
- FIG. 1 shows a first embodiment of the invention.
- the web of material 101 is a stretch film produced on a cast film extrusion line.
- the stretch film 101 After the stretch film 101 has been produced, it is transported in the direction 102 and, as a result, reaches the cutter bar 103 .
- the cutter bar 103 is moved back and forth in the direction 104 by means of an oscillating device and has a total of five cutting blades 105 . To the left and the right of the edges there is in each instance a cut back 111 and 112 , which can be further processed for other purposes.
- the S-shaped edge does not have to be uniform.
- the amplitude and frequency of the movement of the oscillating device can also be irregular.
- the individual blades 105 are individually actuated and, therefore, execute a number of different movements.
- FIG. 2 shows a second embodiment of the invention.
- the web of material 201 is, once again, a stretch film produced on a cast film extrusion line.
- the stretch film 201 After the stretch film 201 has been produced, it is transported in the direction 202 and, as a result, reaches the cutter bar 203 .
- the cutter bar 203 is moved back and forth in the direction 204 by means of an oscillating device and has a total of three cutting blades 205 . Since the outermost edges are left untrimmed on the left and the right, there is, in contrast to the embodiment according to FIG. 1 , no cut back.
- the outer strips 206 and 209 have in each instance a straight edge and an S-shaped edge and are further processed in this shape for specific purposes.
Landscapes
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Winding Of Webs (AREA)
Abstract
The invention relates to a winding device for winding a travelling web of material, said winding device comprising at least one blade for slitting the web of material in the web direction into several partial webs of material and comprising a folding device for folding over the edges of the partial webs of material In order to provide a winding device that allows a web of material to be wound with folded over edges in the simplest possible manner and without folds, an oscillating device is provided, with which the at least one blade can be moved transversely to the direction of the web.
Description
- The invention relates to a winding device for winding a travelling web of material, said winding device comprising at least one blade for slitting the web of material in the web direction into several partial webs of material and comprising a folding device for folding over the edges of the partial webs of material.
- A winding device of this type is known from the U.S. Pat. No. 8,221,298 B2 and is used, in particular, for winding stretch films.
- Stretch films are used to secure and package individual items, for example, on pallets. At the same time the items are wrapped with the stretch film, so that the items are connected to each other with the aid of the self-adhesive stretch film.
- It has been found that the edges of stretch films are often the starting point for the film to tear during the wrapping operation on the pallet. Even minor damage to the edge of a stretch film roll can make this roll unusable, a feature that is particularly critical when the film is to be applied by hand. Such damages may result, for example, from the finished wound roll of stretch film being improperly handled during transport or being dropped on the ground.
- Furthermore, it is also known that the stretch film is more resistant to damage if the edges are folded over or creased before the stretch film is wound on a roll, with the effect that the stretch film is less likely to tear. However, if the edges are folded over, the result is that the edges of the roll of film will be inadmissibly thick and hard during straight edge winding.
- When folding over, it is necessary to cyclically offset the edges of the film to one side of the roll. This can be done, for example, by laterally oscillating the reel or by means of angularly moveable guide rollers, after individual reel slitting.
- However, reversing or oscillating the web of film prior to winding can, in turn, produce folds, which in turn may impair the function of the film.
- Based on the aforesaid, the object of the present invention is to provide a winding device that allows a web of material to be wound with folded edges in the simplest possible manner and without folds.
- This object is achieved by means of an oscillating device, with which the at least one blade can be moved transversely to the direction of the web.
- Hence, an essential element of the invention is the feature of oscillating the cutter bar, used for slitting the reel, transversely to the direction of the film. The devices for folding over the edges after slitting the reel are fixed either on the same cutter bar and execute accordingly the same oscillatory motion as the blades, or said folding devices are attached to a bar, which is located downstream of the cutter bar and which executes an oscillatory motion that is synchronized with the cutter bar.
- As a result, the folded over edges are laterally offset on the resulting stationary reel, and a winding with reduced edge structure is possible. In this case the stroke and frequency of the motion are adjustable and can be adapted, if desired, as a function of the web speed, the film thickness and the increasing diameter of the roll, so that the result is an optimal edge geometry.
- For the subsequent folding device for producing the folded side edge, there are a number of variants. One variant consists of the feature that one folding device is provided for each folded over edge. Each of these folding devices can be used either directly side by side or one after the other. It is also conceivable that the devices for folding over the edges dip centrally into the slit in order to start up, so that they have an effect on both edges; and, in the course of dipping, said folding devices are altered in position or shape due to the appropriate kinematics in such a way that they only affect one edge. This can be done either simultaneously or sequentially for adjacent edges.
- Another variant of a folding device consists of the feature of producing a strip cut-out of several reels and of removing said strip cutout by suction. Then it would be possible to produce a space between the two edges by means of the strip cutout, a design that allows the respective edges to be folded over separately.
- The invention has a number of advantages over the prior art.
- The prior art methods for lateral oscillation of the folded edges are often very complex, since each one of the reels has to be oscillated individually after the reel slitting. For this purpose, additional devices are required that are usually expensive, complicated and maintenance intensive.
- According to the solution of the invention, there is also no limit with respect to the width of the reel and the number of reels.
- According to a preferred embodiment, it is provided that the oscillating device comprises a driven belt, to which the at least one blade is attached. The belt may be, for example, a continuous toothed belt, which is moved by a gearwheel, which is driven by an electric motor.
- According to an additional preferred embodiment, it is provided that the oscillating device comprises a cutter bar, which is driven by a linear motor and to which the at least one blade is attached.
- In addition, preferably a control unit for actuating the oscillating device is provided. As a result, the control device can be used to specify all possible movements or, more specifically, slitting patterns. In particular, it is also conceivable that the thickness profile of the wound roll is continuously measured; and the oscillating device is actuated, as a function of the measured thickness profile, in such a way that the result is a thickness profile that is as uniform as possible.
- The invention may be applied in a particularly advantageous way to the winding operation of stretch films that were produced on a cast film extrusion line or a blown film line.
- Additional details and advantages of the invention will be explained below with reference to the accompanying drawings. The drawings show in:
-
FIG. 1 a first embodiment of the invention; and -
FIG. 2 a second embodiment of the invention. -
FIG. 1 shows a first embodiment of the invention. The web ofmaterial 101 is a stretch film produced on a cast film extrusion line. - After the
stretch film 101 has been produced, it is transported in thedirection 102 and, as a result, reaches thecutter bar 103. Thecutter bar 103 is moved back and forth in thedirection 104 by means of an oscillating device and has a total of fivecutting blades 105. To the left and the right of the edges there is in each instance a cut back 111 and 112, which can be further processed for other purposes. - Behind the
cutter bar 103 there are S-shaped strips FIG. 1 . In this embodiment the S-shaped edge does not have to be uniform. The amplitude and frequency of the movement of the oscillating device can also be irregular. Moreover, it is also conceivable that theindividual blades 105 are individually actuated and, therefore, execute a number of different movements. -
FIG. 2 shows a second embodiment of the invention. The web ofmaterial 201 is, once again, a stretch film produced on a cast film extrusion line. - After the
stretch film 201 has been produced, it is transported in thedirection 202 and, as a result, reaches thecutter bar 203. Thecutter bar 203 is moved back and forth in thedirection 204 by means of an oscillating device and has a total of threecutting blades 205. Since the outermost edges are left untrimmed on the left and the right, there is, in contrast to the embodiment according toFIG. 1 , no cut back. - Behind the
cutter bar 203 there are S-shaped strips FIG. 2 , in this embodiment the S-shaped edge does not have to be uniform. The amplitude and frequency of the movement of the oscillating device can also be irregular. Moreover, it is also conceivable that theindividual blades 205 are individually actuated and, therefore, execute a number of different movements. - The
outer strips
Claims (5)
1. Winding device for winding a travelling web of material,
comprising at least one blade for slitting the web of material in the web direction into several partial webs of material and
comprising a folding device for folding over the edges of the partial webs of material,
characterized by
an oscillating device, with which the at least one blade can be moved transversely to the direction of the web.
2. Winding device, as claimed in claim 1 , characterize in that the oscillating device comprises a driven belt, to which the at least one blade is attached.
3. Winding device, as claimed in claim 1 , characterize in that the oscillating device comprises a cutter bar, which is driven by a linear motor and to which the at least one blade is attached.
4. Winding device, as claimed in claim 1 , characterize by a control unit for actuating the oscillating device.
5. Winding device, as claimed in claim 1 , characterize in that the web of material is a stretch film produced on a cast film extrusion line or a blown film line.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013220858 | 2013-10-15 | ||
DE102013220858.8 | 2013-10-15 | ||
DE102014205173.8 | 2014-03-20 | ||
DE201410205173 DE102014205173A1 (en) | 2013-10-15 | 2014-03-20 | winder |
PCT/EP2014/072136 WO2015055726A1 (en) | 2013-10-15 | 2014-10-15 | Winding device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160272455A1 true US20160272455A1 (en) | 2016-09-22 |
Family
ID=52738201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/029,346 Abandoned US20160272455A1 (en) | 2013-10-15 | 2014-10-15 | Winding device |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160272455A1 (en) |
EP (1) | EP3080023B1 (en) |
CN (1) | CN105813962A (en) |
DE (1) | DE102014205173A1 (en) |
WO (1) | WO2015055726A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220371845A1 (en) * | 2019-09-18 | 2022-11-24 | Windmöller & Hölscher Kg | Winding Device for Winding a Material Web |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014006933B4 (en) | 2014-05-10 | 2016-02-25 | Sml Maschinengesellschaft M.B.H. | Method and device for producing a number of wound film rolls |
JP6897153B2 (en) * | 2016-02-29 | 2021-06-30 | 東レ株式会社 | Intermediate product roll |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8221298B2 (en) * | 2008-07-21 | 2012-07-17 | Paragon Films, Inc. | Apparatus and method for folding film edges |
US20140208905A1 (en) * | 2013-01-31 | 2014-07-31 | Anthony Galea | Method and apparatus for fabricating stretch film rolls |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3536273A (en) * | 1969-02-07 | 1970-10-27 | Du Pont | Method of and apparatus for winding a web of plastic film |
GB1330863A (en) * | 1970-07-06 | 1973-09-19 | Ici Ltd | Slitting webs |
EP1456083B1 (en) * | 2001-12-19 | 2005-11-23 | A.W.A.X. PROGETTAZIONE E RICERCA S.r.l. | Process and machine for packaging products with stretchable thermoplastic film |
AT414220B (en) * | 2004-09-30 | 2006-10-15 | Franz Bayer Holding Ag | PROCESS FOR PRODUCING STRETCH MATERIAL AND CUTTING DEVICE HIEFÜR |
FI122196B (en) * | 2005-02-10 | 2011-10-14 | Haloila M Oy Ab | Method and apparatus for making a cover film ground of a film web |
CN101913509B (en) * | 2010-07-29 | 2011-11-30 | 哈尔滨博实自动化股份有限公司 | Method for automatically replacing M-shaped cylindrical film roll |
-
2014
- 2014-03-20 DE DE201410205173 patent/DE102014205173A1/en not_active Ceased
- 2014-10-15 US US15/029,346 patent/US20160272455A1/en not_active Abandoned
- 2014-10-15 WO PCT/EP2014/072136 patent/WO2015055726A1/en active Application Filing
- 2014-10-15 CN CN201480056993.2A patent/CN105813962A/en active Pending
- 2014-10-15 EP EP14786485.4A patent/EP3080023B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8221298B2 (en) * | 2008-07-21 | 2012-07-17 | Paragon Films, Inc. | Apparatus and method for folding film edges |
US20140208905A1 (en) * | 2013-01-31 | 2014-07-31 | Anthony Galea | Method and apparatus for fabricating stretch film rolls |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220371845A1 (en) * | 2019-09-18 | 2022-11-24 | Windmöller & Hölscher Kg | Winding Device for Winding a Material Web |
Also Published As
Publication number | Publication date |
---|---|
EP3080023A1 (en) | 2016-10-19 |
WO2015055726A1 (en) | 2015-04-23 |
EP3080023B1 (en) | 2020-05-27 |
CN105813962A (en) | 2016-07-27 |
DE102014205173A1 (en) | 2015-04-16 |
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