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
  • B65H18/00—Winding webs
  • B65H18/08—Web-winding mechanisms
  • B65H18/10—Mechanisms in which power is applied to web-roll spindle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
  • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
  • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
  • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
  • B26D1/065—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates for thin material, e.g. for sheets, strips or the like
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
  • B26D5/02—Means for moving the cutting member into its operative position for cutting
  • B26D5/06—Means for moving the cutting member into its operative position for cutting by electrical means
• • 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
  • 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
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
  • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
  • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
  • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than 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
  • B65H2301/41—Winding, unwinding
  • B65H2301/414—Winding
  • B65H2301/4148—Winding slitting
  • B65H2301/41485—Winding slitting winding on one single shaft or support
• • 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
  • B65H2301/41487—Winding slitting trimming edge
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2513/00—Dynamic entities; Timing aspects
  • B65H2513/10—Speed
• • 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
  • B65H2701/11—Dimensional aspect of article or web
  • B65H2701/112—Section geometry
  • B65H2701/1123—Folded article or web
  • B65H2701/11234—C-folded
• • 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
• • 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
  • B65H2701/19—Specific article or web
  • B65H2701/1944—Wrapping or packing material

Definitions

• Winding device for winding a web of material
• the invention relates to a winding device for winding a material web running in one direction with at least one knife for cutting the material web in the direction of the web into several partial material webs and with a folding device for folding over the edges of the partial material webs.
• Stretch films are used to secure and pack individual goods, for example sacks stacked on pallets.
• the goods are wrapped with the stretch film so that the goods are connected to one another with the aid of the self-adhesive stretch film.
• the edges of stretch films are often the starting point for a film to be torn off during wrapping and packaging. Damage to the edges or the edge of a roll of stretch film can make it unusable. Such damage occurs, for example, when the finished roll of stretch film is improperly transported or falls to the ground. It is known that by folding over or folding the edges before it is wound onto a roll, the stretch film becomes more resistant to damage and, as a result, fewer tears occur.
• edges are folded over, if the film roll is wound with straight edges, an edge build-up occurs which also makes the film roll unusable.
• folding the edges it is therefore necessary to remove the edges of the film to wind up on the roll offset to each other. This can be done, for example, by oscillating the roll to the side.
• Folding element is provided and wherein each folding element produces two folded edges.
• a winding device for winding up a running material web with at least one knife for cutting the material web in the direction of the web into several partial material webs and with a folding device for folding over the edges of the partial material webs is known.
• the winding device comprises an oscillating device with which the at least one knife can be moved transversely to the web direction.
• the folding units are arranged directly behind the knives and mechanically coupled to them. To fold the edges, folding units are used which fold over the two opposite edges of adjacent film webs together. It was observed here that wrinkles can arise on the film, which in turn can impair the function of the film.
• the object of the invention is to provide a winding device which enables a material web with folded edges to be wound up with as little wrinkle as possible.
• a folding element is provided for each edge of the partial material webs.
• the at least one knife can be moved transversely to the direction of travel.
• the folding elements for the left edges of the partial material webs seen in the running direction can be moved transversely to the running direction.
• the folding elements for the right edges of the partial material webs seen in the direction of travel can be moved transversely to the direction of travel.
• the first oscillating device, the second oscillating device and the third oscillating device can be controlled with a control unit in such a way that the folded edges of the partial material webs can be wound up offset.
• the width of the folded edges can be adjusted with the winding device according to the invention. If the machine parameters change, the width of the folded edges can be kept constant by the control unit in a corresponding manner. In this way, the same number of film layers can always be wound up during a period of the oscillating knife, whereby the formation of wrinkles on the film can be effectively reduced.
• the first oscillating device, the second oscillating device and the third oscillating device each consist of an eccentric driven by a motor.
• the frequencies of the first oscillating device, the second oscillating device and the third oscillating device can be set separately via the control unit.
• the flow of the first oscillating device, the second oscillating device and the third oscillating device can be set separately via the control unit.
• the thickness profile of the wound roll is measured and forwarded to the control unit.
• the web speed of the material web is measured and forwarded to the control unit.
• the material web is a stretch film produced on a cast film line or on a blown film line.
• Fig. 1 shows a basic representation of a cutter bar according to a first embodiment of the invention
• Fig. 2 shows a basic representation of a cutter bar according to a second embodiment of the invention
• Fig. 3 shows a plan view of a folding device according to the invention
• FIG. 4 shows a perspective illustration of view A according to FIG. 3.
• Fig. 1 shows a basic representation of a cutter bar according to a first embodiment of the invention.
• the material web 101 is a stretch film produced on a cast film line.
• the stretch film 101 is transported in the direction 102 and thus arrives at the cutter bar 103.
• the cutter bar 103 is moved to and fro in the direction 104 by an oscillating device and has a total of 5 cutting knives 105.
• a waste 111 and 112 is created on the left and right at the edges, which can be further processed for other purposes.
• S-shaped strips 106, 107, 108 and 109 are created behind the cutter bar 103, namely approximately in the form shown in FIG. 1.
• 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 knives 105 are activated individually and thus perform different movements.
• Fig. 2 shows a basic representation of a cutter bar according to a second embodiment of the invention.
• the material web 201 is again a stretch film produced on a cast film line.
• the stretch film 201 is transported in the direction 202 and thus arrives at the cutter bar 203.
• the cutter bar 203 is moved to and fro in the direction 204 by an oscillating device and has a total of 3 cutting knives 205. Since the outermost edges are left untrimmed on the left and right, in contrast to the embodiment according to FIG. 1, there is no waste.
• S-shaped strips 206, 207, 208 and 209 are created behind the cutter bar 203, specifically in the form shown in FIG. 2.
• 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 knives 205 are controlled individually and thus perform different movements.
• FIG. 3 shows a plan view of a folding device according to the invention.
• the folding device is located behind a cutter bar, seen in the running direction, for example as this was described in accordance with FIG. 1 or in accordance with FIG. 2.
• the folding device consists of a cross member 301, a first guide rail 302 and a second guide rail 303 are attached.
• In the running direction 304 run four partial material webs 305, 306, 307 and 308, which were previously separated on the cutter bar 103 or 203 from a material web running over the entire width.
• the folding device is designed such that for each edge of the
• Partial material webs 305, 306, 307 and 308 a folding element is provided.
• the folding elements 309, 310, 311 and 312 are displaceably guided on the first guide rail 302 and thus fold over the left edges of the partial material webs 305, 306, 307 and 308 as seen in the running direction 304.
• the second guide rail 303 In a corresponding manner, on the second guide rail 303, the
• Folding elements 313, 314, 315 and 316 are guided displaceably, which thus fold over the right edges of the partial material webs 305, 306, 307 and 308 as seen in the running direction 304.
• the folding elements 309, 310, 311 and 312 are connected to the gear rod 318, which is driven by an eccentric motor 317.
• the folding elements 313, 314, 315 and 316 are connected to the gear rod 320, which is driven by an eccentric motor 319.
• a first oscillating device has already been described with reference to the cutter bar 103 according to FIG. 1 or with reference to the cutter bar 203 according to FIG. 2.
• the eccentric motor 317 also represents a second oscillating device with which the folding elements 309, 310, 311 and 312 for the left edges of the partial material webs seen in the direction of travel 304 can be moved transversely to the direction of travel 304.
• the eccentric motor 319 represents a third oscillating device with which the folding elements 313, 314, 315 and 316 for the right-hand edges of the partial material webs viewed in the direction of travel 304 can be moved transversely to the direction of travel 304.
• a rotary movement of the eccentric motor 317 is converted into a linear movement of the folding elements 309, 310, 311 and 312 transversely to the running direction 304.
• the eccentric motor 317 does not rotate continuously, but executes an alternating partial rotation within a predetermined angular segment. With the opening angle of the angle segment, the stroke of the
• Folding elements 309, 310, 311 and 312 can be adjusted. Furthermore, the frequency of the changing partial rotation corresponds to the movement frequency of the folding elements 309, 310, 311 and 312. If the lifting movements of the folding elements 309, 310, 311 and 312 and the folding elements 313, 314, 315 and 316 are carried out with an offset to one another, the The width of the folded edge can be set.
• the frequency and stroke of the three oscillating units are coordinated with one another by a control unit in such a way that the folded edges of the partial material webs can be wound up offset, so that the above-mentioned edge build-up is avoided.
• FIG. 4 shows a perspective illustration of view A according to FIG. 3. Identical parts are provided with the same reference numerals, so that in this respect reference is made to the description according to FIG. 3.
• each folding element has a controllable lifting cylinder, only the lifting cylinder of the folding element 313 being identified with the reference numeral 401 for the sake of clarity in FIG. 4.
• the lifting cylinder By means of the lifting cylinder, the folding elements can each be pivoted in or out with respect to the web path. In this way, the set-up time for a new order can be reduced, for example, in that the operator can control the simultaneous pivoting in of several folding elements via a corresponding machine command.
• consequential damage in the event of malfunctions can be avoided by automatically pivoting the folding elements out of the web path when a malfunction is detected.

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• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=72613897

Family Applications (1)

Country Status (4)

Family Cites Families (6)

• 2020
  • 2020-09-09 EP EP20775827.7A patent/EP4072981A1/de active Pending
  • 2020-09-09 US US17/761,388 patent/US20220371845A1/en active Pending
  • 2020-09-09 CN CN202080065593.3A patent/CN114450237A/zh active Pending
  • 2020-09-09 WO PCT/EP2020/075142 patent/WO2021052826A1/de active Application Filing

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