US3847046A - Device for cutting continuous webs - Google Patents

Device for cutting continuous webs Download PDF

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Publication number
US3847046A
US3847046A US00410159A US41015973A US3847046A US 3847046 A US3847046 A US 3847046A US 00410159 A US00410159 A US 00410159A US 41015973 A US41015973 A US 41015973A US 3847046 A US3847046 A US 3847046A
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Prior art keywords
web
cutter
feed path
cutter means
feed
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US00410159A
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English (en)
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A Schmermund
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/26—Duplicate, alternate, selective, or coacting feeds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2183—Product mover including gripper means
    • Y10T83/2185—Suction gripper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4705—Plural separately mounted flying cutters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/485—Cutter with timed stroke relative to moving work
    • Y10T83/492—With means to vary timing of tool feed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/485—Cutter with timed stroke relative to moving work
    • Y10T83/494—Uniform periodic tool actuation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8727—Plural tools selectively engageable with single drive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8759—With means to connect or disconnect tool and its drive
    • Y10T83/8761—Continuously moving drive means [e.g., "gag"]
    • Y10T83/8762—Hand actuated connecting means

Definitions

  • a device for cutting continuous webs into lengths comprises two web feed paths each having a portion common to the other and respective cutter means associated with each feed path.
  • Each feed path is provided with respective web feeder means selectively operable to feed a web past the respective cutter means in co-ordination with the displacement of a displaceable knife element thereof.
  • the device is provided with web change-over means selectably actuatable to render inoperative simultaneously said feeder means and the cutter means associated with one feed path and to render operative simultaneously said feeder means and the cutter means associated with the respective other feed path.
  • the change-over means is actuatable only when the knife elements of the respective cutter means are in mutually corresponding positions, whereby the web changeover takes place when the leading edges of respective webs are each so located at corresponding positions in the respective feed paths that on the change-over means being actuated the first length severed from the respective other web is displaced along the common feed path portion in substantially the same time interval as a length severed from the one web would have been had the change-over means not been actuated.
  • a continuous web of wrapping material intended to form for example the inner or outer one of two wrappers applied successively to a cigarette block is withdrawn from a supply reel or bobbin, cut into appropriate lengths, and then fed to the part of the packaging machine which folds the cut lengths around the cigarette blocks.
  • the web material in question may, for example, comprise paper or viscose or cellulose film.
  • a device for cutting continuous webs into lengths comprising two web feed paths each having a portion common to the other, respective cutter means associated with each feed path, respective web feeder means selectively operable to feed a web past the respective cutter means in co-ordination with the displacement of a displaceable knife element thereof, and web changeover means selectably actuatable to render inoperative substantially simultaneously said feeder means and said cutter means associated with one feed path and to render operative substantially simultaneously said feeder means and said cutter means associated with the respective other feed path, said feeder means and said cutter means associated with the one path being rendered inoperative only on the displaceable knife element of the respective cutter means being in a predetermined position, the arrangement being such that, in use, the web change-over takes place when the leading edges of respective webs are each so located at corresponding leading edge registration positions in the re- As the severed lengths pass along the common portion of the feed paths, they may travel for example in a vertically downward direction.
  • Each cutter preferably comprises a rotary cutter having one stationary knife element and a further knife element rotatable relatively to the stationary knife element to bring cutting means of the two knife elements into mutually co-operative action.
  • the rotatable knife elements may be so mounted and driven, only one of them being driven at any given time, that they rotate continuously, for example at uniform speed, or so that they execute individual single rotations spaced by periods of rest.
  • Appropriate drive means for the rotatable knife elements are, of course, provided in either case.
  • the cutting device may be so arranged that the cut lengths of web produced by the operating cutter are fed from the cutter following closely, i.e. substantially in contact, on one another, or if desired, a gap may be introduced between the trailing edge of any one of the cut lengths and the leading edge of the next following length.
  • the latter result may be achieved by introducing suitable differences of linear speed along the feed path, between different parts of the drive means provided to feed the web along the respective feed paths.
  • a conveyor belt arrangement such as an arrangement incorporating a permeable conveyor belt operating by suction may be situated downstream of the cutter in each of the feed paths, and this arrangement may be operated at a higher speed than that of a pair of rollers provided to draw the continuous web of material from the supply reel.
  • a pair of auxiliary feed rollers may be provided upstream of the conveyor belt arrangement and downstream of the cutter.
  • a clutching arrangement may be provided, to transfer drive from a drive shaft selectably to either one of the two rotatable members of the cutters, each of the rotatable members being coupled to a respective helical gear wheel, bevel gear or other suitable gearing arrangement which is in turn connected to a respective co-operable gear mounted about the drive'shaft.
  • FIG. 1 shows a sectional view, in a vertical plane, through one embodiment of the device of the invention.
  • FIG. 2 shows a similar sectional view of a second embodiment.
  • FIG. 1 two continuous webs 14 and 114 of film material are shown in heavy lines, the first travelling in a rightward and downward direction from the top lefthand part of the Figure, and the second travelling downwardly and to the left from the top right-hand part of the Figure.
  • the two webs 14 and 114 are drawn by drive means in the form of pairs 1 and 101 respectively of drive rollers from respective supply reels (not shown).
  • FIG. 1 shows these knife elements in their position of co-operating action to cut the continuous web 14.
  • the direction of rotation of the rotatable knife element is shown by an arrow (this is anticlockwise in FIG. 1).
  • 3a there is shown another position of the rotatable knife element 3, i.e., the position diametrically opposed to that shown in solid lines in FIG. 1, the position 3a being indicated in chain-dotted lines.
  • a suction conveyor belt arrangement which has a conveyor belt 5 permeable to air, circulating around a pair of rollers 4 and 7. Inside the loop formed by the conveyor belt 5, a suction chamber 6 is situated, which has a wall in contact with the belt, the wall being perforated as shown.
  • the web 14 is held firmly against the outer surface of the conveyor belt 5, to prevent the web from flapping or falling away.
  • the web 14 passes through the nip between a further pair of rollers 8, and thence through the nip between a pair of rotatable annular portions 9 and 109 of a suction roller arrangement.
  • the annular portions 9 and 109 are each rotatable respectively relatively to stationary portions 11 and 111, in which there is defined a suction chamber, 10 and 110 respectively.
  • Each of the annular portions 9 and 109 is perforated by bores extending in a direction radial of the axis of rotation of the respective annular portion, so that while a web is in the vicinity of the nip between the two annular portions the web is held firmly by suction against the radially outer surface of one or both, as the case may be, of the two annular portions. From the suction roller arrangement, the web passes vertically downwardly through the nip between two further drive rollers 12.
  • the mechanism for transferring drive output from the rotatable knife element 3 to the rotatable knife element 103 will now be described.
  • This is shown at the top of FIG. 1, and includes a drive shaft 25.
  • Rigidly connected with the drive shaft is a portion of enlarged diameter shown at 20, 120, which is provided with a guide projection 22 secured against lateral movement in a guide member 23 which is stationary, i.e. which does not rotate with the shaft 25.
  • the rotatable knife element 3 is connected with a helical gear 16, which can mesh with a co-operable gear 15 mounted on an elongate member 18 about the drive shaft 25.
  • the elongate member 18 is provided at each opposite axial end with engagement jaws and is rotatably mounted on the drive shaft 25.
  • the left-hand engagement jaws are shown in FIG. 1 as being spaced from co-operable engagement jaws of a stationary part 17 of a support in which the drive shaft 25 is rotatably mounted.
  • the right-hand engagement jaws of the elongate member 18 are shown in a position in which they are engaged with co-operable left-hand engagement jaws of the portion 20, 120 rigidly connected to the drive shaft 25.
  • Similar jaws at the right-hand axial end of the portion 20, 120 are spaced from co-operable jaws at the left-hand axial end of a further elongate member 119, which is similar to the elongate member 18.
  • the member 119 is likewise mounted about the drive shaft 25 and is free to rotate relatively thereto.
  • a gear 115 similar to the gear 115, is carried by the member 119 rigidly.
  • the righthand end of the member 119 is designated by 118.
  • Engagement jaws at the right-hand axial end of the member 118 engage complementary jaws at the left-hand end of a stationary part 117 of the support in which the drive shaft 25 is rotatably mounted.
  • the rotatable knife elements of the cutters are rotated in synchronism with the rotation of the drive shaft 25.
  • Constraining means in the form of the mutually co-operating dog clutch means or jaws on the axial ends of the members 17, 18 and 117, 118 are so arranged that they are only coupled together at the instant when the knife element is in the positions 3a, 103a-
  • the change-over of the application of drive to the rotatable knife elements 103 only takes place when the latter is in the position 103a.
  • the cooperable jaws on the elements 17, 18 mutually interengage and cause the rotatable knife element 3 to be brought to a standstill at the position 3a.
  • the switch 21 is actuated to cause the rollers 1 to stop rotating and the rollers 101 to start rotating in synchronism with the rotation of the rotatable cutter member 103.
  • a switch contact 21 is'provided to the left of the displacement member 24.
  • the plunger of a two-way switch 21 becomes depressed, to cause the contacts of the switch 21 to disconnect the drive to the rollers l, and to cause the switch contacts to establish the drive to the rollers 101.
  • the actuator plunger of the switch 21 is not depressed (that is when the switch 21 is in the condition illustrated in FIG. 1) the rollers 1 are driven and the rollers 101 are stationary.
  • Any suitable form of transmission devices such as electro-magnetic clutches may be employed to be operated by the switch contact 21.
  • the rollers 1 and 101 may be independently driven. In these circumstances, each of the independent drive means is controlled via a control circuit including the switch 21.
  • the actuation of the displacement member 24 also causes drive to the rotatable member 103 (which at the relevant moment is stationary in position 103a), to be established, and this starts now to rotate in the clockwise sense in FIG. 1.
  • the drive rollers 101 are switched onnwhen the left-hand rotatable member 3 has come to rest, the leading edge of the web 14 has reached the position shown at D, this position being a leading edge registration position.
  • the accurate positioning of the leading edge of the lefthand web results from the rotatable cutter 3 being rotated in co-operation with the web drive rollers 1.
  • the leading edge of the left-hand web is arrested when it reaches the corresponding leading edge registration position D. It is important to ensure that when the drive to the rollers 101 is established the leading edge of the stationary web 114 is at the corresponding leading edge registration position (also shown by letter D in FIG. 1), so that after the change from one supply reel to the other has been completed the first length cut from the second web passes out of the device in the same time sequence after the last length cut from the first web as if the first length cut from the second web had in fact been cut from the first web.
  • a gap should be provided between the trailing edge of any given cut length and the leading edge of the next following cut length. This may be achieved with the embodiment of FIG. 1 by applying the principle of the embodiment of FIG. 2 to be described below.
  • a half length of web material extends between position A and position D. As mentioned above, this is supported by the suction effect provided by the permeable conveyor belt 5 and the associated equipment. However, additional means may be provided, if desired, for supporting this length of material, for example a magnetically operated holder, in which case the suction ap plied to the suction chamber 6 may be switched off.
  • the drive shaft 25 and the associated equipment that at all times one of the gears 15 and is maintained stationary by its connection to a stationary part of the support, and the other is connected rigidly with the drive shaft 25 for rotation therewith.
  • a single stroke of the displacement member 24 for example produces a permanent changeover from one supply reel to the other.
  • the member 24 may be manually displaced by an operator if, for any reason, it is desired to change the web supply at any time.
  • the member 24 may be coupled'to means for sensing when one of the supply reels is approaching its emptied state. In these circumstances, the web change-over may take place automatically.
  • the mechanism for displacing the member 24 is arranged to resiliently urge the menber 24 towards the right or the left, as the case may be, in order to enable the coupling between the co-operating dog clutch jaws to take place smoothly at the appropriate moment. Because the characteristics of this coupling such as that between the members 17, 18 for example, the rotatable cutter is always arrested at the position 3a or 103 a. However, if a new web is to be introduced, it will either be necessary to splice the new web to the trailing end of the old exhausted web, or to manually feed the new web to the position in which it is in registration with the corresponding leading edge registration position. I
  • the rotational position at which the jaws of the member 18 engage with the co-operating jaws on the member 17 is determined by the positioning of the station.- ary jaws on the latter member.
  • the position at which the knife element is brought to rest may be preset to any convenient position.
  • the knife element 3 may be arrested in a position other than 3a, and thus will result in the location of the leading edge registration position being shifted correspondingly.
  • the arrested positions of the knife elements 3 and 103 must correspond with one another, if the first web piece. cut from the second web after a web change-over has been initiated is to be fed from the machine in substantially the same time interval as the corresponding web piece cut from the first web would have been if the change-over had not been initiated.
  • the co-operating jaws on the members 17, 18, 19, 20, 120, 119, 118 and 117 are in the form of dog-clutches.
  • the dog clutch components are so arranged that they may be coupled together only when the shaft 25 is in a uniquely identified angular position in each revolution.
  • the slidable sleeves are coupled to the respective cutter means by co-operating gears 15, 16 and 115, 116, other means for coupling the drive shaft 25 to the mobilized cutter may be employed for this purpose.
  • the displaceable knife elements of the respective cutter means which may be reciprocatable knife elements to be displaced in co-ordination with the drive shaft and the respective web feeder means such as the nip roller pairs 1,- 101.
  • FIG. 2 discharges cut lengths of web material which, instead of following very closely one on the other, follow with a gap in between. As mentioned above, this may be advantageous in the supply of lengths of wrapper to cigarette block packaging machines.
  • FIG. 2 The embodiment shown in FIG. 2 will now be described. However, the basic arrangement is very similar to that shown in FIG. 1.
  • the parts of the device enclosed in chain-dotted lines and labelled I, II and Ill respectively may conveniently be considered separately.
  • the moving parts shown in part I of the device operate at all times when the cutting device is in operation, while the moving parts of part II of the device are driven only when a web 24 is being supplied from a left-hand supply reel (not shown), and
  • part III of the device are driven only when a web 1234 is being fed from a right-hand supply reel (not shown).
  • a pair of drive rollers I draw the web 24 from the left-hand supply reel, and the web 24 passes through the nip between the two rollers 1, and then between two transfer bridge members 5 and 6.
  • a rotary cutter is provided downstream of the rollers 1, and has a stationary knife element 2 and a co-operating rotary knife element 3.,In chain-dotted lines there is shown the position of the knife element 3 in which a cut is taking place. A further position for the knife element 3 is shown at 3a, in which the knife element 3 has executed a 90 rotation from the position shown in chain-dotted lines.
  • the cut lengths of web material pass between a tail section of the bridge member 6 and a further bridge member 7, to teach the nip between two auxiliary drive rollers 4, whence the cut length of web pass between a still further bridge member 13 and a guide plate of generally triangular configuration with its apex downwards.
  • the part III of the device contains similar components to those of the part II, and these are represented by similar reference numerals, but with 100 added.
  • part III of the device a further position 1031] of the rotatable knife element 103 of the rotary cutter in part III, the position l03b being the diametrically opposite position to that in wich the rotatable knife element co-operates with the stationary knife element 102 to make a cut.
  • the rotatable knife element 103 rotates in the clockwise sense in FIG. 2.
  • a permeable conveyor belt 9 generally similar to the belt 5 described in connection with FIG. 1, and the belt 9 passes around the left-hand roller of a suction roller arrangement similar to the arrangement 11, 111 of FIG. 1 and also around a further roller 25.
  • a suction chamber 11 is provided inside the loop formed by the belt 9, and a housing wall 10 of the chamber is perforated with apertures extending towards the belt 9 as shown in FIG. 2.
  • the suction effect applied by the suction chamber 11 through the belt 9 holds the web 24, after cutting, securely against the belt 9 as the web is conveyed to the nip between the two annular rollers of the suction roller arrangement.
  • Numeral 12 denotes the opposite wall of the suction chamber.
  • Lateral guides 14 are provided to maintain the conveyor belt 9 on its intended course as it executes its return run.
  • the suction chambers of the suction roller arrangement are shown at 26 and 126.
  • Additional transfer bridge members 17 are provided downstream of the suction roller arrangement, and a further pair of drive rollers 18, 19 are provided to draw cut lengths of web material out of the cutting device.
  • a suction chamber 23 being provided to act on this belt.
  • the rear wall of the suction chamber is shown at 22, and the front, perforated wall at 21.
  • the lateral guides for the belt 20 are shown at 27.
  • a and B denote corresponding points along the paths of the webs 24 and 124 respectively.
  • the conveyor belt 109 is driven at a higher linear speed, measured along the feed path, than the rollers 101 and 104.
  • a gap is formed between the trailing edge D and the leading edge B.
  • the device can be so operated that such a gap is formed not only at the time of changing over from one supply reel to another, but all the time, so that each of the cut lengths of web is fed with a spacing from the preceding length and the following length.
  • the provision of such a gap is certainly not necessary, but in some circumstances is advantageous.
  • the conveyor belt 109 may be caused to increase in speed in relation to the components of part III of the device only at the time of changing over from one supply reel to another.
  • the cut length is discharged from the cutting device, to be utilised for packaging purposes, for example to be wrapped around a cigarette block.
  • FIG. 2 Althought the embodiment shown in FIG. 2 has the advantage of introducing gaps between the successively discharged cut lengths of web material, nevertheless the device may be produced economically and the construction is not particularly complicated. However, this embodiment may be operated in a particularly effective manner. 7
  • a device for cutting continuous webs into lengths comprising, in combination:
  • guide means defining two web feed paths each having 7 a portion common to the other;
  • respective web feeder means each selectively operable to feed a web past the respective one of said cutter means in co-ordination with the displacement of said knife element thereof;
  • web change-over means selectably actuatable to render inoperative substantially simultaneously said feeder means and said cutter means associated with one said feed path and to render operative substantially simultaneously said feeder means and said cutter means associated with the respective other said feed path;
  • a device as defined in claim 1, comprising respective further feeder means associated with each said feed path to feed lengths of said web severed by said cutter means along a feed path portion extending downstream of said cutter means.
  • each said further feeder means feeds said severed lengths along the respective said feed path at substantially the same speed as that at which said selectively operable feeder means feeds a web past said cutter means, whereby successive said severed lengths are fed from the respective said cutter means with substantially no gap therebetween.
  • each said further feeder means feeds said severed lengths along the respective said feed path at a substantially higher speed than that at which said selectively operable feeder means feeds said web past the respective said cutter means, whereby successive said severed lengths are fed from the respective said cutter means with a substantial gap therebetween.
  • each said further feeder means comprises a drivable endless belt downstream of the respective said cutter means to facilitate the transfer of said severed lengths of web along the respective one of said feed paths.
  • each said endless belt is permeable to air, and each passes around respective suction chambers provided with a plurality of apertures through which suction is applied to one surface of the respective said belt to cause said severed lengths of web to adhere to the respective other surface of said belt.
  • a device as defined in claim 1, comprising a pair of suction roller devices disposed at a junction between said two feed paths, each said roller device comprising a stationary inner portion and an annular outer portion rotatable about said inner portion, said outer portion having radially extending passages therethrough and said inner portion defining a suction chamber of limited peripheral extent, by means of which suction is applied to the radially inner ends of said passages in said outer portion as such passages pass said suction chamber, to cause said severed lengths of web to adhere to said outer portion.
  • each said cutter means comprises a rotary cutter, said displaceable knife element thereof being rotatable relatively to a stationary knife element to bring said displaceable and stationary knife elements into mutually cooperative action.
  • said web change-over means comprises a drive shaft rotatable mounted in a support, an elongate central sleeve member mounted on said shaft to rotate therewith and restrained from axial displacement there along, a first sleeve member rotatably mounted on said shaft, disposed on a shaft portion projecting from one end of said central sleeve and axially slidable along said shaft to be selectably coupled to one of said central sleeve and said support, a second sleeve member rotatably mounted on said shaft, disposed on a shaft portion projecting from the respective opposite end of said central sleeve and axially slidable along said shaft to be selectably coupled to one of said support and said central sleeve, first gear means coupling said first sleeve member to said displaceable knife element of said one cutter means, second gear means coupling said second sleeve member to said displaceable knife element of the respective other said cutter means, and displacement
  • a device as defined in claim 12, wherein said support comprises a first fixed sleeve member mounted on said shaft next adjacent said first slidable sleeve memher, and a second fixed sleeve member mounted on said mutually co-operable dog clutch means are mutually engageable only on the respective one of said slidable sleeve members being located in a predetermined angular position on said drive shaft.
  • the web change-over means comprises electrical switch means selectably operable to render inoperative said web feeder means co-ordinated with said cutter means of said one feed path and substantially simultaneously to render operative said feeder means co-ordinated with said cutter meansof said respective other web feed path, and vice-versa.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Replacement Of Web Rolls (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
US00410159A 1972-10-31 1973-10-26 Device for cutting continuous webs Expired - Lifetime US3847046A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5009572A GB1440926A (en) 1972-10-31 1972-10-31 Device for cutting continuous webs

Publications (1)

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US3847046A true US3847046A (en) 1974-11-12

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ID=10454643

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Application Number Title Priority Date Filing Date
US00410159A Expired - Lifetime US3847046A (en) 1972-10-31 1973-10-26 Device for cutting continuous webs

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US (1) US3847046A (enExample)
JP (1) JPS5649825B2 (enExample)
BE (1) BE806332A (enExample)
DD (1) DD110626A5 (enExample)
DE (1) DE2351643A1 (enExample)
FR (1) FR2205054A5 (enExample)
GB (1) GB1440926A (enExample)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114355A (en) * 1976-02-05 1978-09-19 Molins Limited Apparatus for the production of wrappers
US4480516A (en) * 1980-11-19 1984-11-06 Etablissements Ruby Machine for continuously cutting a strip for forming sections with rounded edges having opposite curvatures
US4969862A (en) * 1986-11-26 1990-11-13 Winkler & Duennebier Maschinenfabrik Und Eisengiesserei Gmbh & Co. Kg. Method and apparatus for producing folded articles
US6173636B1 (en) * 1996-04-19 2001-01-16 Voith Sulzer Papiermaschinen Gmbh Traveling fiber material web cutoff apparatus
US6244321B1 (en) 1993-04-08 2001-06-12 Japan Tobacco, Inc. Automatic web material connecting apparatus
CN104340707A (zh) * 2014-10-31 2015-02-11 黄山富田精工制造有限公司 一种卫生用品片材的进料装置
AU2015383832B1 (en) * 2015-10-16 2016-12-15 O&M Halyard International Unlimited Company Method and system for introducing a reserve nose wire in a facemask production line
US10143246B2 (en) 2015-10-16 2018-12-04 O&M Halyard, Inc. Method for cutting and placing nose wires in a facemask manufacturing process
US10227202B2 (en) 2015-10-16 2019-03-12 O&M Halyard, Inc. Method and system for cutting and placing nose wires in a facemask manufacturing process
CN109502397A (zh) * 2018-12-24 2019-03-22 唐延实业(上海)有限公司 一种压力滑块式保鲜膜点断机构
US10494221B2 (en) 2015-10-16 2019-12-03 O&M Halyard, Inc. Method and system for splicing nose wire in a facemask manufacturing process
CN111483846A (zh) * 2020-05-30 2020-08-04 成都阿茂芙科技有限公司 一种pet金膜生产用进料设备
US10786020B2 (en) 2015-10-16 2020-09-29 O&M Halyard, Inc. Method and system for placing pre-cut nose wires in a facemask manufacturing process
US10828842B2 (en) 2015-10-16 2020-11-10 O&M Halyard, Inc. Method and system for cutting and placing nose wires in a facemask manufacturing process
US10882715B2 (en) 2015-10-16 2021-01-05 O&M Halyard, Inc. Method and system for splicing nose wire in a facemask manufacturing process
US10913559B2 (en) 2015-10-16 2021-02-09 O&M Halyard, Inc. Method and system for automated stacking and loading wrapped facemasks into a carton in a manufacturing line
US11059690B2 (en) 2015-10-16 2021-07-13 O&M Halyard, Inc. Method and system for automated stacking and loading of wrapped facemasks into a carton in a manufacturing line
CN114921946A (zh) * 2022-05-25 2022-08-19 朗天科技股份有限公司 一种无纺布收卷用分切装置及其方法
CN115648379A (zh) * 2022-11-11 2023-01-31 江苏万航木业有限公司 用于家居家具板材封边装置及封边方法

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DE3436217A1 (de) * 1984-10-03 1986-04-03 Focke & Co (GmbH & Co), 2810 Verden Verfahren und vorrichtung zum wechseln von bobinen in verbindung mit verpackungsmaschinen
DE4212987A1 (de) * 1992-04-18 1993-10-21 Alfill Getraenketechnik Verfahren und Vorrichtung zum Fördern einer Materialbahn
DE202004011334U1 (de) * 2004-07-20 2005-12-01 Krones Ag Vorrichtung zum Abschneiden von Einzelabschnitten von einer Folienbahn
EP3502669B1 (en) 2016-08-18 2021-10-20 Horiba, Ltd. Antibody analyzer, antibody analysis method, and associated computer readable medium
CN119839962B (zh) * 2025-03-20 2025-06-20 福建秦朝木业科技有限公司 一种碳化木地板用切割机

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Cited By (23)

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Publication number Priority date Publication date Assignee Title
US4114355A (en) * 1976-02-05 1978-09-19 Molins Limited Apparatus for the production of wrappers
US4480516A (en) * 1980-11-19 1984-11-06 Etablissements Ruby Machine for continuously cutting a strip for forming sections with rounded edges having opposite curvatures
US4969862A (en) * 1986-11-26 1990-11-13 Winkler & Duennebier Maschinenfabrik Und Eisengiesserei Gmbh & Co. Kg. Method and apparatus for producing folded articles
US6244321B1 (en) 1993-04-08 2001-06-12 Japan Tobacco, Inc. Automatic web material connecting apparatus
US6173636B1 (en) * 1996-04-19 2001-01-16 Voith Sulzer Papiermaschinen Gmbh Traveling fiber material web cutoff apparatus
CN104340707A (zh) * 2014-10-31 2015-02-11 黄山富田精工制造有限公司 一种卫生用品片材的进料装置
US10494221B2 (en) 2015-10-16 2019-12-03 O&M Halyard, Inc. Method and system for splicing nose wire in a facemask manufacturing process
US10882715B2 (en) 2015-10-16 2021-01-05 O&M Halyard, Inc. Method and system for splicing nose wire in a facemask manufacturing process
US10227202B2 (en) 2015-10-16 2019-03-12 O&M Halyard, Inc. Method and system for cutting and placing nose wires in a facemask manufacturing process
US11059690B2 (en) 2015-10-16 2021-07-13 O&M Halyard, Inc. Method and system for automated stacking and loading of wrapped facemasks into a carton in a manufacturing line
AU2015383832B1 (en) * 2015-10-16 2016-12-15 O&M Halyard International Unlimited Company Method and system for introducing a reserve nose wire in a facemask production line
US10492547B2 (en) * 2015-10-16 2019-12-03 O&M Halyard, Inc. Method and system for introducing a reserve nose wire in a facemask production line
US10913559B2 (en) 2015-10-16 2021-02-09 O&M Halyard, Inc. Method and system for automated stacking and loading wrapped facemasks into a carton in a manufacturing line
US10786020B2 (en) 2015-10-16 2020-09-29 O&M Halyard, Inc. Method and system for placing pre-cut nose wires in a facemask manufacturing process
US10828842B2 (en) 2015-10-16 2020-11-10 O&M Halyard, Inc. Method and system for cutting and placing nose wires in a facemask manufacturing process
US10143246B2 (en) 2015-10-16 2018-12-04 O&M Halyard, Inc. Method for cutting and placing nose wires in a facemask manufacturing process
CN109502397A (zh) * 2018-12-24 2019-03-22 唐延实业(上海)有限公司 一种压力滑块式保鲜膜点断机构
CN111483846A (zh) * 2020-05-30 2020-08-04 成都阿茂芙科技有限公司 一种pet金膜生产用进料设备
CN111483846B (zh) * 2020-05-30 2021-05-25 绍兴市尊铖自动化设备有限公司 一种pet金膜生产用进料设备
CN114921946A (zh) * 2022-05-25 2022-08-19 朗天科技股份有限公司 一种无纺布收卷用分切装置及其方法
CN114921946B (zh) * 2022-05-25 2023-04-14 朗天科技股份有限公司 一种无纺布收卷用分切装置及其方法
CN115648379A (zh) * 2022-11-11 2023-01-31 江苏万航木业有限公司 用于家居家具板材封边装置及封边方法
CN115648379B (zh) * 2022-11-11 2023-11-10 江苏万航木业有限公司 用于家居家具板材封边装置及封边方法

Also Published As

Publication number Publication date
DD110626A5 (enExample) 1975-01-05
JPS5649825B2 (enExample) 1981-11-25
DE2351643A1 (de) 1974-05-02
GB1440926A (en) 1976-06-30
BE806332A (fr) 1974-02-15
JPS4977282A (enExample) 1974-07-25
FR2205054A5 (enExample) 1974-05-24

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