WO1999057050A1 - Cross-cutting apparatus and method for a web-like material, as well as sheet cutter - Google Patents

Cross-cutting apparatus and method for a web-like material, as well as sheet cutter Download PDF

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Publication number
WO1999057050A1
WO1999057050A1 PCT/FI1999/000271 FI9900271W WO9957050A1 WO 1999057050 A1 WO1999057050 A1 WO 1999057050A1 FI 9900271 W FI9900271 W FI 9900271W WO 9957050 A1 WO9957050 A1 WO 9957050A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
cutting
piercing
cross
set forth
Prior art date
Application number
PCT/FI1999/000271
Other languages
French (fr)
Inventor
Martti Karhu
Unto LAURÉN
Original Assignee
Valmet Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valmet Corporation filed Critical Valmet Corporation
Priority to DE19983176T priority Critical patent/DE19983176T1/en
Priority to AU31498/99A priority patent/AU3149899A/en
Priority to CA002331397A priority patent/CA2331397A1/en
Priority to AT0903299A priority patent/AT501246B1/en
Publication of WO1999057050A1 publication Critical patent/WO1999057050A1/en
Priority to SE0003860A priority patent/SE520121C2/en

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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
    • B65H35/04—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 transverse cutters or perforators
    • B65H35/08—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 transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
    • 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
    • B26D1/12—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 cutting member moving about an axis
    • B26D1/25—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 cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/36—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder
    • B26D1/365—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder 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
    • 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
    • B26D1/12—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 cutting member moving about an axis
    • B26D1/25—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 cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B26D1/405—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member 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
    • 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
    • B26D1/12—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 cutting member moving about an axis
    • B26D1/25—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 cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/42—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and slidably mounted in a rotary member
    • B26D1/425—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and slidably mounted in a rotary member 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
    • 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
    • B26D1/56—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/62—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder
    • B26D1/626—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/14—Means for treating work or cutting member to facilitate cutting by tensioning the work
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/02—Tearing
    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • B26D2007/202—Rollers or cylinders being pivoted during operation

Definitions

  • the present invention relates to a cross-cutting apparatus for a web-like mate- rial, such as a pulp or paper web, as well as to a cross-cutting method. Furthermore, the invention relates to a sheet cutting unit.
  • An object of the present invention is to provide an enhanced cross-cutting apparatus for a pulp web, which will also be simpler and more effective than currently available equipment in terms of its operation and maintenance.
  • the basic conception in an apparatus and method of the invention is that it comprises means for maintaining a web tension at a cutting point as well as a blade assembly capable of piercing a web for cutting the same.
  • said web-supporting assembly (2) includes at least one arrangement (6) for allowing the piercing action of the blade element (5) to extend through the web (4) in such a way that it is simultaneously supported in the vicinity of a piercing area.
  • the apparatus comprises two pairs of web- tensioning rotating rolls spaced from each other in the web running direction, as well as there between a pair of rotating cross-cutting rolls, the web being guided through said pairs of rolls, and that one of the cutting rolls is provided with at least one web-piercing blade element extending from the circumferential roll surface and one of the web-supporting rolls has its circumferential surface provided with at least one groove or slot in cooperation with said blade element.
  • the upstream pair of drawing rolls has a speed of rotation which is lower than that of the downstream pair of drawing rolls.
  • An apparatus of the invention is based on the piercing of a web, not cutting it.
  • a requirement for piercing is that the web be tensioned at the point of piercing for driving the piercing blade easily into and through the web.
  • the apparatus of the invention is less noisy and, furthermore, the apparatus can be designed by using lighter, thin-walled rolls or cylinders.
  • the blade element or elements are included in an upper cutting roll and the groove or grooves respectively in a lower cutting roll.
  • the construction of rolls used in a recommended embodiment can be designed in such a way that the web-supporting frame of a cutting roll is provided with circumferential grooves and, respectively, the circumferential surface of a roll thereabove is provided with piercing blades matching the grooves.
  • the counter-roll can be provided with a corresponding number of grooves or a single groove, a speed difference between the rolls being used for bringing the piercing blade to always find a groove present on the frame.
  • the above-described continuously rotating roll can also be replaced by using a linkage performing a reciprocating action.
  • This type of solution can be implemented e.g. in such a way that on one side of a web (either above or below) is a continuously rotating roll provided with a piercing blade and a piercing slot is included in a linkage functioning as a counterpart for the roll and having an arched top surface which is provided with a crosswise slot over the length of the piercing blade, which is able to receive the blade in a pierce-cut operation.
  • the linkage may operate in such a manner that the blade of roll of a rotating blade roll "drives" the linkage.
  • a blade bar can also be constructed by using a similar linkage, whereby both the blade bar and a counter-bar take the form of recipro- eating linkages.
  • the invention relates also to a method for the continuous-action cutting of a web-like material, such as a web of pulp or the like.
  • This method is characterized in that the web is maintained in a tensioned condition and pierced crosswise of the web with a blade element in one or more operations at the same point of the web, and that the web is supported during the piercing process at the point of piercing in such a way that the blade element is able to penetrate through the web essentially throughout its cross machine direction.
  • the tension of a web is maintained in such a way that the pierc- ing blade does not alter the main running direction of the web.
  • the invention relates to a continuous working sheet cutter unit in a pulp-drying machine, comprising at least
  • slitter mechanism for a pulp web for cutting it in a number of laterally adjusted slitting devices into separate longitudinal webs
  • bale table or the like for stacking the sheets thereon to produce bales.
  • This sheet cutter unit is characterized in that the cross-cutting device, in which the separate webs are cut into sheets, comprises at least - a web-supporting assembly on one side of the web,
  • the web-supporting assembly comprising an arrangement for allowing a piercing action of the blade element to extend through the web while simultaneously supporting it in the operative vicinity of a piercing location
  • fig. 1 shows an apparatus of the invention in one embodiment
  • figs. 2 and 3 show a second preferred embodiment of the invention
  • fig. 4 shows a further embodiment of the invention, wherein one of the blades is retractable
  • fig. 5 shows a solution of the invention, wherein the cutting of a web is per- formed in two separate operations
  • figs. 6 and 7 show details of fig. 5 embodiment
  • fig. 8 shows a sheet cutter unit of the invention.
  • the apparatus of the invention is based on the fact that a web is not cut with a blade, but a web is pierced, the requirement of which is that the web is tensioned at the moment and area of piercing.
  • Fig. 1 depicts a fundamental solution for such an apparatus of the invention.
  • a second pair of rolls 2 wherein the upper roll has its outer frame provided with a piercing blade 5 extending from the frame.
  • the lower roll 2, which supports the web 4 is provided with a cir- cumferential recess 6 which is in cooperation with the piercing blade 5 of the upper roll in such a way that, as the upper roll is rotating, the piercing means 5 and the recess 6 coincide with each other at the web, the piercing means 5 penetrating into the web and piercing the same.
  • Fig. 1 illustrates just one piercing means 5, but the number can be increased as the case may be, the practical number of blades being 1-4 as illustrated in fig. 4.
  • the lower roll 2 can be provided with an equivalent number of counter-grooves 6 for the piercing means 5.
  • Figs. 2 and 3 illustrate an embodiment of the invention, wherein a web passes through between a roll provided with a blade 5 and a back-up element 11 set therebelow and provided with a web-supporting bearing surface.
  • the bearing surface is not constituted by a roll but, instead, by the link-shaped back-up element 11 , having its peripheral surface provided with a groove 6 in cooperation with the blade 5.
  • the back-up element 11 is hinged to a support assembly and operates reciprocally along a path defined by two limiters 12.
  • the back-up element 11 is in its start position against a left-hand cushion member 12 , in which position the overhead blade 5 coincides with the groove 6 present in the bearing surface upon pressing through a web 4.
  • the back-up element 11 turns along with the blade 5 and is released therefrom, as shown in fig. 3, as the back-up element comes into contact with the right-hand limiter 12. In this position, a spring 13 pulls the back-up element 11 back to the start position.
  • the link-shaped back-up element 11 operates continuously, being driven by the rotating overhead roll. It is also possible that such a linkage can be operated mechanically.
  • Fig. 4 depicts one embodiment in reference to four crosswise blades.
  • One of the full-width blades 5 is positioned in a groove-like recess, having such a depth that the blade 5 can be fully retracted within the recess.
  • the blade 5 is adapted to be movable in and out in contact with guide surfaces.
  • the actuator is constituted by a number of electrically controlled solenoids 25, capable of retracting the blade even while the machine is run- ning, if this is desirable.
  • the loading is effected for example by means of a spring, which normally maintains the blade extended as the web is pierced.
  • the actuator, such as the solenoids 25, is sufficiently powerful for retracting the blade against the spring load.
  • the blades are typically maintained extended but, in special circumstances, the solution of the invention can be readily switched for running sheets of a different size, such as bale wrapping sheets.
  • the actuator By way of a transfer path extending through a shaft the actuator (actuators) is connected to a control unit for controlling the position of blades.
  • Figs. 5-7 illustrate an embodiment of the invention, wherein a web is cross-cut in several sequences. This is shown schematically in fig. 5.
  • Fig. 6 shows the point of piercing in a view transversal to the running direction of a web 4.
  • the apparatus is provided with a back-up plate 7 for the web 4.
  • the back-up plate 7 constitutes an opening or a recess 6 at the point of pierc- ing, wherein a web-supporting roll 2 is able to make a contact with the web.
  • the roll 2 is provided with circumferentially extending grooves 10, which correspond to the transversal groove 6 in the surface of the roll 2 shown in fig. 1.
  • the circumferentially extending grooves are parallel to each other and correspond in number to the number of piercing blades 5 included in the overhead roll.
  • the piercing blades can be positioned in a number of rows spaced from each other in the running direction of the web.
  • the embodiment shown in figs. 5-7 includes blade arrays 5, 50 which are set in two successive rows (fig. 5) in line with the longitudinal axis of the overhead roll. In line with the blades 5, 50 and below the web 4 there are back-up rolls 2, 20, respectively.
  • the blade position can be adjusted by means of an adjustment and fastening screw 9 extending through a slot 8. Likewise, the blade is quite easy to replace. 8
  • the blade wears very little and, thus, it is very seldom that the blade must be replaced.
  • Fig. 7 illustrates the embodiment of fig. 6 as seen in the web running direction.
  • Fig. 7 depicts a slotted design of the lower roll and the positioning of the piercing blades 5, 50 in line with grooves 10 extending around the circumference thereof.
  • the number of blades can be 1-4.
  • the continuous sheet cutter unit of the invention used in a pulp-drying ma- chine and shown schematically in fig. 8, comprises a tail feed device 14 for a pulp web 4, which is preferably mounted in connection with the cutter unit and to which the web is delivered from a dryer section. Normally the web merely runs past the tail feed device, which is not needed except in a feed situation. Subsequently, in a cutter unit of the invention, the web 4 is advanced to a slitter assembly 15 for slitting the same with a number of laterally mounted slitting devices into separate longitudinal webs. The slitting width is determined according to what is desirable in a particular type of slitting.
  • the separate webs are carried further to a pair of drawing rolls 1 , which maintains over a dryer section a desired web tension and draws the web (at this point, slit separate webs).
  • a pair of drawing rolls 1 which maintains over a dryer section a desired web tension and draws the web (at this point, slit separate webs).
  • the longitudinally slit separate webs are fed to a cross-cutting piercing device 2 of the invention for cutting the separate webs into sheets by piercing in accordance with the invention.
  • the cross-cutting piercing device of the invention for cutting separate webs into sheets comprises at least a web-supporting assembly 2 on one side of a web 4, a web-piercing blade element 5 on the essentially opposite side thereof, said web-supporting assembly 2 comprising an arrangement 6 for allowing a piercing action of the blade element to extend through the web 4 while supporting the same in the functional vicinity of the piercing area, as well as a mecha- nism 20 for adjusting/setting the web to a predetermined tension at the moment of cutting the web.
  • downstream of the piercing-cutting unit 2 is a second pair of drawing rolls 3 for maintaining a desired tension in the cross-cutting apparatus as well as for guiding cut sheets 16 further, if necessary in an overlapping fashion, onto a bale table, whereby it is also possible to use a separate set of drawing rolls 17 for overlapping.
  • a reject gate/gates 19 in connection with the pair of drawing rolls 3 are closed, the sheets 16 runs forward in the process over a normal path to the support rolls of a sheet conveyor and further onto a bale table 18.
  • the continuous sheet cutter unit of the invention used in a pulp-drying machine is capable of eliminating several drawbacks existing in the prior art architecture.
  • the use of a sheet cutter unit of the invention entails, for example, that it is not necessary to build a complicated temperature stabilizing unit for the counter- blade, which means savings in terms of space, energy, as well as investment costs.
  • the sheet cutter unit of the invention is also significantly less noisy than the prior art solutions. There is more freedom in designing a sheet cutter unit of the invention, as it does not require a downward path run to the cutter, which is the case in the prior art solution.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Advancing Webs (AREA)

Abstract

The invention relates to a continuous cross-cutting apparatus for a web-like material (4), such as a web of pulp or alike, comprising means (1, 3) for maintaining the web (4) in a tensioned condition at the moment of cutting, a web-supporting assembly (2) and at least one web-piercing blade element (5) on the opposite side of the web, said assembly (2) comprising at least one arrangement (6) for enabling a piercing action of the blade element (5) through the web (4). The invention also relates to a method for the continuous cutting of a web (4), wherein said web (4) is maintained in a tensioned condition and pierced in cross-machine direction with a blade element (5) in one or more operations at the location of the supported web. Furthermore, the invention relates to a continuous sheet cutter unit in a pulp-drying machine, wherein a cross-cutting device (2) for cutting separate webs into sheets corresponds to the above-described cross-cutting apparatus.

Description

1
Cross-cutting apparatus and method for a web-like material, as well as sheet cutter
The present invention relates to a cross-cutting apparatus for a web-like mate- rial, such as a pulp or paper web, as well as to a cross-cutting method. Furthermore, the invention relates to a sheet cutting unit.
In prior art cross-cutting mechanisms used in a pulp-drying machine, the cutting process is based on a rotating cross-cutting blade and a solid counter- blade. The aim is to produce a neat cutting trace. A good cutting result requires permanently sharp blades and a controlled blade clearance. As the machines' sizes keep increasing, specially their width, the control of a blade clearance becomes increasingly difficult, perhaps even impossible. In any event, a technical solution will be very expensive in currently available equipment involving a rotary cutting blade and a counter-blade. At the point of cutting, a pulp web is subjected to a compression between the blades before the web is severed. In such a cutting operation, the edge areas of a sheet experience contraction of the pulp material and develop material lumps ("fish-eyes"). Such material lumps are not desirable in view of the further processing of a pulp sheet, whereas the cutting results itself need not be particularly good since, after all, the severed pulp sheet will be processed further.
An object of the present invention is to provide an enhanced cross-cutting apparatus for a pulp web, which will also be simpler and more effective than currently available equipment in terms of its operation and maintenance.
The basic conception in an apparatus and method of the invention is that it comprises means for maintaining a web tension at a cutting point as well as a blade assembly capable of piercing a web for cutting the same.
An apparatus of the invention is characterized in that the apparatus comprises at least
- means (1 , 3) for maintaining the tension of a web (4) at the cutting moment, as well as - an assembly capable of crosswise cutting the web, comprising
- at least a web-supporting assembly (2) on one side of the web (4), and
- at least one web-piercing blade element (5) on the essentially opposite side thereof, wherein said web-supporting assembly (2) includes at least one arrangement (6) for allowing the piercing action of the blade element (5) to extend through the web (4) in such a way that it is simultaneously supported in the vicinity of a piercing area.
In a preferred embodiment, the apparatus comprises two pairs of web- tensioning rotating rolls spaced from each other in the web running direction, as well as there between a pair of rotating cross-cutting rolls, the web being guided through said pairs of rolls, and that one of the cutting rolls is provided with at least one web-piercing blade element extending from the circumferential roll surface and one of the web-supporting rolls has its circumferential surface provided with at least one groove or slot in cooperation with said blade element.
In a further embodiment of the invention the upstream pair of drawing rolls has a speed of rotation which is lower than that of the downstream pair of drawing rolls.
An apparatus of the invention is based on the piercing of a web, not cutting it. A requirement for piercing is that the web be tensioned at the point of piercing for driving the piercing blade easily into and through the web.
With regard to conventional equipment provided with rotary cutting blades and counter-blades, the apparatus of the invention is less noisy and, furthermore, the apparatus can be designed by using lighter, thin-walled rolls or cylinders.
In a preferred embodiment of the invention, the blade element or elements are included in an upper cutting roll and the groove or grooves respectively in a lower cutting roll. The construction of rolls used in a recommended embodiment can be designed in such a way that the web-supporting frame of a cutting roll is provided with circumferential grooves and, respectively, the circumferential surface of a roll thereabove is provided with piercing blades matching the grooves.
Another advantage gained by the invention is that, if necessary, the number of blades can be increased, such number being generally 1-4. The counter-roll can be provided with a corresponding number of grooves or a single groove, a speed difference between the rolls being used for bringing the piercing blade to always find a groove present on the frame.
The above-described continuously rotating roll can also be replaced by using a linkage performing a reciprocating action. This type of solution can be implemented e.g. in such a way that on one side of a web (either above or below) is a continuously rotating roll provided with a piercing blade and a piercing slot is included in a linkage functioning as a counterpart for the roll and having an arched top surface which is provided with a crosswise slot over the length of the piercing blade, which is able to receive the blade in a pierce-cut operation. At its simplest, the linkage may operate in such a manner that the blade of roll of a rotating blade roll "drives" the linkage. Pulled by the blade roll, the linkage swings from a start position to set against a cushion while the cut-through takes place. After the cutting, the linkage returns to its start position, e.g. by means of a spring force. A blade bar can also be constructed by using a similar linkage, whereby both the blade bar and a counter-bar take the form of recipro- eating linkages.
In embodiments with several blades, the blades can be adapted to be retractable, whereby it is readily possible to use one and the same apparatus for running sheets of various sizes. These may be necessary if, for example, it is desirable to wrap a pulp bale in the same pulp as the contents of the bale, the cutter of the invention being readily capable of running bale wrappers (= larger sheets) by retracting some of the blades, even while the machine is running. In the construction of the invention, it is not necessary to undertake a blade adjustment, which is a major practical advantage. The replacement of a blade in a pulp mill may take up to six hours and such a blade has an operating life from about 3 months to 1 year, depending on how much it is used.
The invention relates also to a method for the continuous-action cutting of a web-like material, such as a web of pulp or the like. This method is characterized in that the web is maintained in a tensioned condition and pierced crosswise of the web with a blade element in one or more operations at the same point of the web, and that the web is supported during the piercing process at the point of piercing in such a way that the blade element is able to penetrate through the web essentially throughout its cross machine direction.
In the method, the tension of a web is maintained in such a way that the pierc- ing blade does not alter the main running direction of the web.
Furthermore, the invention relates to a continuous working sheet cutter unit in a pulp-drying machine, comprising at least
- a slitter mechanism for a pulp web for cutting it in a number of laterally adjusted slitting devices into separate longitudinal webs,
- a pair of drawing rolls or the like for maintaining in the dryer section a desired web tightness and for drawing the web,
- a cross-cutting device for cutting the separate webs into sheets,
- an overlapping device for sheets, wherein the sheets are overlapped for reducing the speed of the pulp web, as well as
- a bale table or the like for stacking the sheets thereon to produce bales.
This sheet cutter unit is characterized in that the cross-cutting device, in which the separate webs are cut into sheets, comprises at least - a web-supporting assembly on one side of the web,
- a web-piercing blade element on the essentially opposite side thereof, the web-supporting assembly comprising an arrangement for allowing a piercing action of the blade element to extend through the web while simultaneously supporting it in the operative vicinity of a piercing location, 5
- an assembly for adjusting/setting the web to a predetermined tension at the web cutting moment.
The invention will now be described in more detail with reference made to the accompanying drawings, in which
fig. 1 shows an apparatus of the invention in one embodiment,
figs. 2 and 3 show a second preferred embodiment of the invention,
fig. 4 shows a further embodiment of the invention, wherein one of the blades is retractable,
fig. 5 shows a solution of the invention, wherein the cutting of a web is per- formed in two separate operations,
figs. 6 and 7 show details of fig. 5 embodiment, and
fig. 8 shows a sheet cutter unit of the invention.
The apparatus of the invention is based on the fact that a web is not cut with a blade, but a web is pierced, the requirement of which is that the web is tensioned at the moment and area of piercing.
Fig. 1 depicts a fundamental solution for such an apparatus of the invention.
In the running direction of a pulp web 4 there are two spaced-apart pairs of rolls 1 and 3, the web 4 being guided therethrough. The downstream pair rolls 3 has a rotating speed which is higher than that of the first pair of rolls 1 , the web 4 becoming tighter between these pairs of rolls.
Between the pars of rolls 1 and 3 is fitted a second pair of rolls 2, wherein the upper roll has its outer frame provided with a piercing blade 5 extending from the frame. The lower roll 2, which supports the web 4, is provided with a cir- cumferential recess 6 which is in cooperation with the piercing blade 5 of the upper roll in such a way that, as the upper roll is rotating, the piercing means 5 and the recess 6 coincide with each other at the web, the piercing means 5 penetrating into the web and piercing the same.
Fig. 1 illustrates just one piercing means 5, but the number can be increased as the case may be, the practical number of blades being 1-4 as illustrated in fig. 4. Respectively, the lower roll 2 can be provided with an equivalent number of counter-grooves 6 for the piercing means 5.
Figs. 2 and 3 illustrate an embodiment of the invention, wherein a web passes through between a roll provided with a blade 5 and a back-up element 11 set therebelow and provided with a web-supporting bearing surface. In this embodiment, the bearing surface is not constituted by a roll but, instead, by the link-shaped back-up element 11 , having its peripheral surface provided with a groove 6 in cooperation with the blade 5. At its base, the back-up element 11 is hinged to a support assembly and operates reciprocally along a path defined by two limiters 12.
In fig. 2, the back-up element 11 is in its start position against a left-hand cushion member 12 , in which position the overhead blade 5 coincides with the groove 6 present in the bearing surface upon pressing through a web 4.
As the roll 2 is rotating, the back-up element 11 turns along with the blade 5 and is released therefrom, as shown in fig. 3, as the back-up element comes into contact with the right-hand limiter 12. In this position, a spring 13 pulls the back-up element 11 back to the start position.
In the embodiment shown in figs. 2 and 3, the link-shaped back-up element 11 operates continuously, being driven by the rotating overhead roll. It is also possible that such a linkage can be operated mechanically.
Fig. 4 depicts one embodiment in reference to four crosswise blades. One of the full-width blades 5 is positioned in a groove-like recess, having such a depth that the blade 5 can be fully retracted within the recess. The blade 5 is adapted to be movable in and out in contact with guide surfaces. In this embodiment, the actuator is constituted by a number of electrically controlled solenoids 25, capable of retracting the blade even while the machine is run- ning, if this is desirable. The loading is effected for example by means of a spring, which normally maintains the blade extended as the web is pierced. The actuator, such as the solenoids 25, is sufficiently powerful for retracting the blade against the spring load. The blades are typically maintained extended but, in special circumstances, the solution of the invention can be readily switched for running sheets of a different size, such as bale wrapping sheets. By way of a transfer path extending through a shaft the actuator (actuators) is connected to a control unit for controlling the position of blades.
Figs. 5-7 illustrate an embodiment of the invention, wherein a web is cross-cut in several sequences. This is shown schematically in fig. 5.
Fig. 6 shows the point of piercing in a view transversal to the running direction of a web 4. The apparatus is provided with a back-up plate 7 for the web 4. The back-up plate 7 constitutes an opening or a recess 6 at the point of pierc- ing, wherein a web-supporting roll 2 is able to make a contact with the web. The roll 2 is provided with circumferentially extending grooves 10, which correspond to the transversal groove 6 in the surface of the roll 2 shown in fig. 1. The circumferentially extending grooves are parallel to each other and correspond in number to the number of piercing blades 5 included in the overhead roll.
The piercing blades can be positioned in a number of rows spaced from each other in the running direction of the web. The embodiment shown in figs. 5-7 includes blade arrays 5, 50 which are set in two successive rows (fig. 5) in line with the longitudinal axis of the overhead roll. In line with the blades 5, 50 and below the web 4 there are back-up rolls 2, 20, respectively.
The blade position can be adjusted by means of an adjustment and fastening screw 9 extending through a slot 8. Likewise, the blade is quite easy to replace. 8
The blade wears very little and, thus, it is very seldom that the blade must be replaced.
Fig. 7 illustrates the embodiment of fig. 6 as seen in the web running direction. Fig. 7 depicts a slotted design of the lower roll and the positioning of the piercing blades 5, 50 in line with grooves 10 extending around the circumference thereof. Depending on the width of a web, the number of blades can be 1-4.
The continuous sheet cutter unit of the invention, used in a pulp-drying ma- chine and shown schematically in fig. 8, comprises a tail feed device 14 for a pulp web 4, which is preferably mounted in connection with the cutter unit and to which the web is delivered from a dryer section. Normally the web merely runs past the tail feed device, which is not needed except in a feed situation. Subsequently, in a cutter unit of the invention, the web 4 is advanced to a slitter assembly 15 for slitting the same with a number of laterally mounted slitting devices into separate longitudinal webs. The slitting width is determined according to what is desirable in a particular type of slitting. After the slitting, the separate webs are carried further to a pair of drawing rolls 1 , which maintains over a dryer section a desired web tension and draws the web (at this point, slit separate webs). From the pair of drawing rolls 1 the longitudinally slit separate webs are fed to a cross-cutting piercing device 2 of the invention for cutting the separate webs into sheets by piercing in accordance with the invention.
The cross-cutting piercing device of the invention for cutting separate webs into sheets comprises at least a web-supporting assembly 2 on one side of a web 4, a web-piercing blade element 5 on the essentially opposite side thereof, said web-supporting assembly 2 comprising an arrangement 6 for allowing a piercing action of the blade element to extend through the web 4 while supporting the same in the functional vicinity of the piercing area, as well as a mecha- nism 20 for adjusting/setting the web to a predetermined tension at the moment of cutting the web.
According to the invention, downstream of the piercing-cutting unit 2 is a second pair of drawing rolls 3 for maintaining a desired tension in the cross-cutting apparatus as well as for guiding cut sheets 16 further, if necessary in an overlapping fashion, onto a bale table, whereby it is also possible to use a separate set of drawing rolls 17 for overlapping. When a reject gate/gates 19 in connection with the pair of drawing rolls 3 are closed, the sheets 16 runs forward in the process over a normal path to the support rolls of a sheet conveyor and further onto a bale table 18.
The continuous sheet cutter unit of the invention used in a pulp-drying machine is capable of eliminating several drawbacks existing in the prior art architecture. The use of a sheet cutter unit of the invention entails, for example, that it is not necessary to build a complicated temperature stabilizing unit for the counter- blade, which means savings in terms of space, energy, as well as investment costs. The sheet cutter unit of the invention is also significantly less noisy than the prior art solutions. There is more freedom in designing a sheet cutter unit of the invention, as it does not require a downward path run to the cutter, which is the case in the prior art solution.

Claims

10 Claims
1. A cross-cutting apparatus for a web-like material (4), such as a pulp web or alike, said apparatus comprising at least - means (1 , 3) for maintaining the tension of the web (4) at a cutting moment, as well as an assembly capable of a crosswise cutting of the web, comprising at least a web-supporting assembly (2) on that side of the web (4) which is opposite to a blade, characterized in that at least one web-piercing blade element (5) on the essentially opposite to the web-supporting assembly (2), wherein said web-supporting assembly (2) includes at least one arrangement (6) for allowing the piercing action of the blade element (5) to extend through the web (4) in such a way that it is simultaneously supported in the vicinity of a piercing area.
2. An apparatus as set forth in claim 1 , characterized in that the apparatus comprises two pairs (1 , 3) of web-tensioning rotating rolls spaced from each other in the running direction of the web (4), as well as therebetween a pair (2) of rotating cross-cutting rolls, the web being fed between the rolls of said roll pairs, and that one of the cutting rolls (2) is provided with at least one web- piercing blade element (5) extending from the roll surface and one of the web- supporting rolls has its surface provided with at least one groove or slot (6) in cooperation with said blade element (5).
3. A cross-cutting apparatus as set forth in claim 2, characterized in that the the upstream pair (1) of drawing rolls has a speed of rotation which is lower than that of the downstream pair (3) of drawing rolls.
4. A cross-cutting apparatus as set forth in claim 2 or 3, characterized in that the blade element or elements (5) are included in the upper cutting roll and the groove or grooves (6) respectively in the lower cutting roll. 11
5. A cross-cutting apparatus as set forth in claim 4, characterized in that the web-supporting cutting roll frame is provided with circumferentially extending grooves (10) and, respectively, the circumference of the roll thereabove is provided with the piercing blades (5) matching the grooves.
6. A cross-cutting apparatus as set forth in any of claims 1-5, characterized in that the number of grooves (6, 10) and, respectively, that of piercing blades (5) is 1-4.
7. An apparatus as set forth in any of the preceding claims, characterized in that the apparatus comprises a number of successive arrangements consisting of an assembly (2, 20) supporting the web (4) and a blade element (5, 50) piercing the web (4), such that each arrangement of a web-supporting assembly and a web-piercing blade element cross-cuts alone just part of the web in cross-machine direction but the arrangements result in a full-width cross-cutting.
8. An apparatus as set forth in claim 1 , characterized in that the web-supporting assembly (2) comprises a linkage mechanism (11) which includes a bearing surface, extending in cross-machine direction of the web (4) and being provided with a groove system (6), said linkage mechanism (11) being supported (12, 13) in a fashion that enables a reciprocating action.
9. An apparatus as set forth in any of the preceding claims, characterized in that there is a clearance between the piercing blade (5) and the bearing surface of the support system (2, 11).
10. An apparatus as set forth in claim 9, characterized in that a non-cutting clearance is provided between the piercing blade (5) and the bearing surface of the support mechanism (11).
11. An apparatus as set forth in any of the preceding claims, characterized in that there are a number of blade elements (5, 50) and at least one is retractable. 12
12. A method for a continuously cutting of a web-like material (4), such as a web of pulp or the like, characterized in that the web (4) is maintained in a tensioned condition and pierced in cross-machine direction with a blade element (5) in one or more stages at the same location of the web, and that the web is supported during the piercing process at the piercing location in such a way that the piercing blade element (5) is able to penetrate through the web (4) essentially throughout its cross-machine dimension.
13. A method as set forth in claim 12, characterized in that the web (4) is maintained in a tensioned condition in such a way that the piercing blade (5) does not alter the main running direction of the web.
14. A continuous sheet cutter unit in a pulp-drying machine, comprising at least a slitter mechanism for a pulp web for cutting it in a number of laterally adjusted slitting devices (15) into separate longitudinal webs,
- a pair (1 , 3) of drawing rolls or the like for maintaining over a dryer section a desired web tightness and for drawing a web (4), a cross-cutting device (2) for cutting the separate webs into sheets (16), comprising an assembly (2) on the other side of the web for supporting the web (4), an overlapping device (17) for sheets, wherein the sheets are overlapped for reducing the speed of the pulp web, as well as
- a bale table (18) or the like for stacking the sheets (16) thereon to produce bales, characterized in that
- the cross-cutting device, in which the separate webs are cut into the sheets (16), comprises at least a web-piercing blade element (5) on the essentially opposite side in relation to the assembly supporting the web (4), the web-supporting assembly com- prising an arrangement (6) for allowing a piercing action of the blade element (5) to extend through the web simultaneously supporting it in the functional vicinity of a piercing location, an assembly (20) for adjusting/setting the web (4) to a predetermined tension at the web cutting moment. 13
15. A continuous-action sheet cutter unit in a pulp-drying machine as set forth in claim 13, characterized in that it comprises the assembly (20) for adjusting/setting a speed difference between the pair (1 , 3) of drawing rolls and the overlapping device (17) for the sheets (16) and/or a moment therebetween so as to establish a predetermined tension at the moment of cutting.
16. A continuous sheet cutter unit in a pulp-drying machine as set forth in claim 14 or 15, characterized in that the assembly (20) for adjusting/setting the web (4) to a predetermined tension at the moment of cutting the web comprises a second pair (3) of drawing rolls downstream of the pierce-cutter unit for maintaining a desired tension in the cross-cutting device as well as for guiding the cut sheet forward.
PCT/FI1999/000271 1998-05-06 1999-04-01 Cross-cutting apparatus and method for a web-like material, as well as sheet cutter WO1999057050A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19983176T DE19983176T1 (en) 1998-05-06 1999-04-01 Cross cutting device and method for web material
AU31498/99A AU3149899A (en) 1998-05-06 1999-04-01 Cross-cutting apparatus and method for a web-like material, as well as sheet cutter
CA002331397A CA2331397A1 (en) 1998-05-06 1999-04-01 Cross-cutting apparatus and method for a web-like material, as well as sheet cutter
AT0903299A AT501246B1 (en) 1998-05-06 1999-04-01 DEVICE AND METHOD FOR DISCONNECTING A MOVING MATERIAL RAIL
SE0003860A SE520121C2 (en) 1998-05-06 2000-10-25 Cross cutter and method for a web-like material, as well as sheet cutters

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI981001A FI103663B1 (en) 1998-05-06 1998-05-06 Cross-cutting apparatus and method for web-shaped material and sheet cutting unit
FI981001 1998-05-06

Publications (1)

Publication Number Publication Date
WO1999057050A1 true WO1999057050A1 (en) 1999-11-11

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AU (1) AU3149899A (en)
CA (1) CA2331397A1 (en)
DE (1) DE19983176T1 (en)
ES (1) ES2199622B2 (en)
FI (1) FI103663B1 (en)
SE (1) SE520121C2 (en)
WO (1) WO1999057050A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1260326A2 (en) * 2001-05-23 2002-11-27 Adrian Llewellyn Merritt Method and apparatus for partially cutting a sheet, and sheet or strip obtained thereby
WO2008002218A1 (en) * 2006-06-30 2008-01-03 Sca Hygiene Products Ab Device for producing an absorbing product
EP2358508A1 (en) * 2008-11-19 2011-08-24 Goss International Americas, Inc. Folder for adjustably tensioning a web and method of adjusting web tension as a web is cut
WO2012034286A1 (en) * 2010-09-17 2012-03-22 深圳市创自技术有限公司 Tearing-cutting device for paper-card strip
CN106863473A (en) * 2017-02-20 2017-06-20 旭友电子材料科技(无锡)有限公司 Circular pressing and cutting method
CN106956322A (en) * 2017-03-21 2017-07-18 旭友电子材料科技(无锡)有限公司 Position regulator and circular pressing and cutting equipment
CN107053337A (en) * 2017-02-20 2017-08-18 旭友电子材料科技(无锡)有限公司 Circular pressing and cutting machine
EP3925743A1 (en) * 2020-06-18 2021-12-22 Sidel Participations Cutting unit and cutting method for a labelling machine

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CN109760121B (en) * 2019-01-14 2020-08-18 铜陵麟安生物科技有限公司 Notching device for floor wet tissue and processing technology thereof
CN111170050B (en) * 2020-01-17 2021-11-02 湖北福好医疗用品有限公司 Quick feed non-woven fabric folding slicer

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI10937A (en) * 1925-11-27 Avrivningsanordning för Cellulosa-ark och dlikt
US3765286A (en) * 1972-08-21 1973-10-16 F Vossen Cutting apparatus
US4404880A (en) * 1977-10-14 1983-09-20 Georgia-Pacific Corporation Method for web cutting in rolled sheet material dispensers
SE456819B (en) * 1981-07-20 1988-11-07 Rengo Co Ltd DEVICE FOR CONTROL OF A DEVICE BEFORE PUSHING AFTER EACH EXHAUSTED SHEETS
SE461726B (en) * 1989-02-06 1990-03-19 Rolf Arne Larsson DEVICE FOR FIXING THE KNIFE BLADES FOR CUTTING A PAPER COAT
EP0534177A1 (en) * 1991-09-25 1993-03-31 Mitsubishi Jukogyo Kabushiki Kaisha Rotary shear
US5230268A (en) * 1991-06-22 1993-07-27 Man Roland Druckmaschinen Ag Device for cross cutting and/or perforating of a web
EP0625476A1 (en) * 1993-03-31 1994-11-23 Japan Tobacco Inc. Apparatus for cutting a web at a predetermined length and supplying the same
WO1997023398A1 (en) * 1995-12-22 1997-07-03 Wjc Systec A/S Method and device for perforating and/or cutting and/or scoring a web.
EP0836938A2 (en) * 1996-10-15 1998-04-22 Komori Corporation Pinless folder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04354699A (en) * 1991-05-30 1992-12-09 Mita Ind Co Ltd Sheet punch
US5740709A (en) * 1994-03-30 1998-04-21 Goss Graphic Systems, Inc. Two stage continuous web cutting system and method

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI10937A (en) * 1925-11-27 Avrivningsanordning för Cellulosa-ark och dlikt
US3765286A (en) * 1972-08-21 1973-10-16 F Vossen Cutting apparatus
US4404880A (en) * 1977-10-14 1983-09-20 Georgia-Pacific Corporation Method for web cutting in rolled sheet material dispensers
SE456819B (en) * 1981-07-20 1988-11-07 Rengo Co Ltd DEVICE FOR CONTROL OF A DEVICE BEFORE PUSHING AFTER EACH EXHAUSTED SHEETS
SE461726B (en) * 1989-02-06 1990-03-19 Rolf Arne Larsson DEVICE FOR FIXING THE KNIFE BLADES FOR CUTTING A PAPER COAT
US5230268A (en) * 1991-06-22 1993-07-27 Man Roland Druckmaschinen Ag Device for cross cutting and/or perforating of a web
EP0534177A1 (en) * 1991-09-25 1993-03-31 Mitsubishi Jukogyo Kabushiki Kaisha Rotary shear
EP0625476A1 (en) * 1993-03-31 1994-11-23 Japan Tobacco Inc. Apparatus for cutting a web at a predetermined length and supplying the same
WO1997023398A1 (en) * 1995-12-22 1997-07-03 Wjc Systec A/S Method and device for perforating and/or cutting and/or scoring a web.
EP0836938A2 (en) * 1996-10-15 1998-04-22 Komori Corporation Pinless folder

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1260326A2 (en) * 2001-05-23 2002-11-27 Adrian Llewellyn Merritt Method and apparatus for partially cutting a sheet, and sheet or strip obtained thereby
EP1260326A3 (en) * 2001-05-23 2003-10-29 Adrian Llewellyn Merritt Method and apparatus for partially cutting a sheet, and sheet or strip obtained thereby
WO2008002218A1 (en) * 2006-06-30 2008-01-03 Sca Hygiene Products Ab Device for producing an absorbing product
US7866361B2 (en) 2006-06-30 2011-01-11 Sca Hygiene Products Ab Device for the manufacture of absorbent products
EP2358508A4 (en) * 2008-11-19 2012-10-10 Goss Int Americas Inc Folder for adjustably tensioning a web and method of adjusting web tension as a web is cut
EP2358508A1 (en) * 2008-11-19 2011-08-24 Goss International Americas, Inc. Folder for adjustably tensioning a web and method of adjusting web tension as a web is cut
US8671810B2 (en) 2008-11-19 2014-03-18 Goss International Americas, Inc. Folder for adjustably tensioning a web as the web is cut
WO2012034286A1 (en) * 2010-09-17 2012-03-22 深圳市创自技术有限公司 Tearing-cutting device for paper-card strip
CN106863473A (en) * 2017-02-20 2017-06-20 旭友电子材料科技(无锡)有限公司 Circular pressing and cutting method
CN107053337A (en) * 2017-02-20 2017-08-18 旭友电子材料科技(无锡)有限公司 Circular pressing and cutting machine
CN107053337B (en) * 2017-02-20 2019-03-01 旭友电子材料科技(无锡)有限公司 Circular pressing and cutting machine
CN106956322A (en) * 2017-03-21 2017-07-18 旭友电子材料科技(无锡)有限公司 Position regulator and circular pressing and cutting equipment
EP3925743A1 (en) * 2020-06-18 2021-12-22 Sidel Participations Cutting unit and cutting method for a labelling machine

Also Published As

Publication number Publication date
AU3149899A (en) 1999-11-23
AT501246B1 (en) 2006-11-15
AT501246A1 (en) 2006-07-15
FI103663B (en) 1999-08-13
FI103663B1 (en) 1999-08-13
ES2199622A1 (en) 2004-02-16
CA2331397A1 (en) 1999-11-11
SE520121C2 (en) 2003-05-27
SE0003860L (en) 2000-10-25
FI981001A0 (en) 1998-05-06
SE0003860D0 (en) 2000-10-25
DE19983176T1 (en) 2001-05-10
ES2199622B2 (en) 2005-11-16

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