EP0752299A1 - Rotationsschlitzvorrichtung - Google Patents

Rotationsschlitzvorrichtung Download PDF

Info

Publication number
EP0752299A1
EP0752299A1 EP96304903A EP96304903A EP0752299A1 EP 0752299 A1 EP0752299 A1 EP 0752299A1 EP 96304903 A EP96304903 A EP 96304903A EP 96304903 A EP96304903 A EP 96304903A EP 0752299 A1 EP0752299 A1 EP 0752299A1
Authority
EP
European Patent Office
Prior art keywords
knife
knives
driven
sheets
board
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96304903A
Other languages
English (en)
French (fr)
Inventor
Barrie Hardisty
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SCM Container Machinery Ltd
Original Assignee
SCM Container Machinery Ltd
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 SCM Container Machinery Ltd filed Critical SCM Container Machinery Ltd
Publication of EP0752299A1 publication Critical patent/EP0752299A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B26D7/2642—Means for adjusting the position of the cutting member for slotting cutters
    • 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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/14—Forming notches in marginal portion of work by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/20—Cutting sheets or blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/20—Cutting sheets or blanks
    • B31B50/22—Notching; Trimming edges of flaps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/25—Surface scoring
    • B31B50/254—Surface scoring using tools mounted on belts or chains

Definitions

  • THIS INVENTION concerns a device for cutting slots in a linear succession of moving sheets or boards. Such devices are commonly used in the manufacture of corrugated boxes to produce linear slots in flat cardboard blanks for the subsequent folding and glueing of the blanks to produce boxes.
  • a slotting device of this kind is usually provided in conjunction with a rotary creasing device which scores or produces linear indentations in the board to enable it to be folded easily, again for the production of finished boxes.
  • a rotary creasing head forming, with an anvil, a nip between which boards are successively fed thus to produce a continuous crease along each board at the desired position across the width of same.
  • a pair of driven pull rolls are provided within the machine to ensure that the board is transported therethrough at a substantially constant velocity.
  • a rotary slotting head which carries around a part of its circumference an arcuate knife which, by interaction with an anvil roller beneath the board, cuts slots in the board as it travels through the machine after being creased. Further pull rolls are usually provided after the slotting head, again to ensure positive transport of the board through the machine.
  • one of the knives is fixed to its associated head whilst the other may be adjusted in position around the circumference of the head thus to determine the length of and spaces between the slots.
  • Adjustment of the position of the thus movable knife has been provided in the past by one or more fixing nuts which may be released to permit the knife to move around the head, and then retightened when the knife is in the selected position.
  • the moving or adjustable knife is mounted on a gear ring which meshes with a pinion usually driven from the adjacent creaser driveshaft.
  • the selection of length and spacing of slots is limited by the constraints imposed upon the degree of available adjustment of the adjustable knife relative to the fixed knife, and the speed at which the relative positions of the heads can be adjusted.
  • compensator means must be provided to ensure that the fixed knife and therefore the movable knife positioned selectively in relation thereto, engage and cut the board at required register positions thereon.
  • a considerable advantage can be obtained by providing a device in which both cutting knives are adjustable, each with respect to the other, and preferably during a production run.
  • a device for cutting slots in a linear succession of moving sheets comprising at least two arcuate knives adapted for rotation about at least one axis transverse to the direction of movement of the sheets as the sheets successively pass a position radially displaced from said rotational axis; characterised in that both knives are adjustable in their relative rotational positions during rotation thereof.
  • each knife is independently driven around its rotational axis and is capable of acceleration and deceleration thus to assume an instantaneous position relative to the sheets and to each other in order to determine the length and spacing of successive slots.
  • the knives are adapted for rotation about a common axis and separately mounted each upon a non-rotating hub, rotational movement of each knife about the common axis serving to perform the cutting operation and successively to position the knife for a subsequent cut.
  • the machine to be described consists essentially of two creasing heads A and B each forming, with an anvil, a nip through which successive boards C pass in a linear horizontal direction whereby continuous creases are performed on the board.
  • Each creasing head more specifically comprises a rotary creasing head 100 acting on one face of the board and a rotary anvil 101 forming the nip for receipt of the board.
  • Each creasing assembly of head and anvil is mounted on a carriage 102 which is linearly movable across the machine on cross beams 103, 104.
  • Several such creasing assemblies are provided across beams 103, 104 thus to select or deselect a creasing function at predetermined positions across the board.
  • the creasing assemblies form no part of the present invention save for their inclusion in a combined creasing and slotting machine and so a further description of detailed parts of the creasing section is unnecessary.
  • a cross beam 1 extending between a pair of side frames one of which is illustrated at 2, and positioned at opposed sides of the machine.
  • a head support bracket 4 Mounted on a rail 3 by way of a suspended running block 5 is a head support bracket 4.
  • the head support bracket 4 Fixed to the head support bracket 4 is an annular hub 6 on which two ball races 7 are mounted.
  • the ball races 7 support a pair of side-by-side coaxial knife gears 8 and 9.
  • a first arcuate knife 10 is fixed to the knife gear 9 and a second arcuate knife 11 is fixed to the knife gear 8.
  • the knife gears 8 and 9 are thus rotatably mounted independently on the hubs 6.
  • drive gears 14 and 15 are also mounted on the head support bracket 4 in bearing assemblies 13 respectively.
  • the gears 14 and 15 are in driving mesh with the knife gears 8 and 9 respectively.
  • Drive is transmitted from the shafts 16 and 17 to gears 14 and 15 by key ways or other similar arrangements such as square or hexagonal drive shaft formations.
  • the drive gears 14 and 15 are designed so that they may slide along the drive shafts to allow setting of the transverse position in the machine of each slotting assembly.
  • the two drive shafts 16 and 17 are driven independently by computer controlled motors.
  • each slotting head is operated selectively to cut slots in the successively advancing boards at predetermined positions therein.
  • the second knife (No. 2) is about to complete cutting a slot in the board over a distance of some 40° of rotational movement. This is followed by progression of the board unslotted until the leading edge of the first knife (No. 1) penetrates the board and cuts a slot equivalent to the arcuate length of the knife, thereafter leaving a further unslotted length.
  • Fig. 1 For simplicity, the knives are shown in Fig. 1 as mutually abutting thus to provide a single elongate slot during each revolution of the pair of knives.
  • Fig. 4 which diagrammatically illustrates the cutting operation as determined by the relative positions of the first and second knives and shows the actual cuts performed on the board
  • a board having a length of 1600mm is advanced through the machine in the direction of arrow X and at the instantaneous position of the rotary head illustrated the first knife would perform a cut of 350mm in length, and thereafter, since the second knife is positioned with its leading edge 180° displaced from the trailing edge of the first knife, an uncut length of board of 900mm follows. This is then followed by a further cut of 350mm performed by the second knife.
  • the leading edge of the first knife must be moved, if necessary, to bring its leading edge into bottom dead centre position to penetrate the next successive board at its leading edge, once again to perform the same cuts in the next board.
  • both knives are accelerated and decelerated and moved around the common axis at different speeds as necessary to bring them into their required positions to perform the cuts.
  • These movements performed via the mechanism illustrated in Figs. 2 and 3, are effected by appropriate computer controlled operation of the drive motors coupled to the drive shafts 16 and 17.
  • the first knife from bottom dead centre performs a cut equivalent to 350mm in length.
  • a gap is left between the trailing edge of the first knife and the leading edge of the second knife equivalent to a linear distance of 100mm so that an uncut length of board of that length remains.
  • the second knife commences its 350mm cut and before the trailing edge of the second knife has completed its cut the leading edge of the first knife is driven around the axis into abutting relationship with the trailing edge of the second knife as illustrated beneath the adjoining section of the boards.
  • the second knife After the trailing edge of the first knife has left the second board the second knife has again been driven around the axis to leave a further 100mm length of uncut board before it performs the final 350mm cut at the trailing edge of the second board, with the result that two boards have been cut in what is essentially a single operation performing for each board a pair of slots each of 350mm length extending inwardly from opposed edges with 100mm uncut portions centrally disposed.
  • a trailing part of the first knife performs a cut of 147.5mm in the leading edge of the first board with the second knife spaced behind the first knife in the direction of rotation by a distance of 90mm thus to leave an uncut portion of the board of that length.
  • the leading half of the second knife then performs a further cut of 147.5mm as far as the trailing edge of the first board.
  • the leading edge of the first knife has passed the bottom dead centre and the knife penetrates the leading edge of the second board approximately half way through its arcuate extent thus again performing a half cut of 147.5mm, and once again the second knife is positioned behind the first knife by a distance equivalent to 90mm to leave a further uncut portion of that length, and finally, the leading portion of the second knife performs the final cut on the trailing edge of the second board.
  • the slotting mechanism in accordance with this invention has been described as comprising a plurality of annular hubs around which knife bearing gears are driven selectively to determine the position and extent of each cut
  • the hubs may be provided in the form of annular heads mounted upon a fixed or rotating shaft provided that each knife gear is adapted to be driven independently of the other and of the central shaft to the desired positions as determined by the cuts to be performed.
  • annular hubs mounted on the head support brackets 4 provides a much lighter construction when compared with conventional cutting systems, and the combined adjustment and cutting motion of the knives reduces the number of separate drive systems required.
  • first and second knives may be mounted on individual holders 23 and 24 respectively, disposed in spaced apart relationship along the line of travel of the boards, as opposed to being mounted on a common axis as in the first embodiment described above.
  • each of the knife holders 23 and 24 is driven by an assembly of timing belts and pulleys 18, 19, 20 and 21 from a computer-controlled motor 22.
  • a gear train may be used if preferred.
  • a leading slot has been cut in the board by the second knife, and the first knife is about to commence cutting a trailing slot. In this condition the second knife can be re-positioned ready to cut the leading slot in the next succeeding board.
  • the knife holders 23 and 24 in this embodiment may be placed directly upon re-positioned drive shafts 16 and 17 thus eliminating the need for timing belts or gears.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
EP96304903A 1995-07-06 1996-07-03 Rotationsschlitzvorrichtung Withdrawn EP0752299A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9513771.7A GB9513771D0 (en) 1995-07-06 1995-07-06 Rotary slotting device
GB9513771 1995-07-06

Publications (1)

Publication Number Publication Date
EP0752299A1 true EP0752299A1 (de) 1997-01-08

Family

ID=10777217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96304903A Withdrawn EP0752299A1 (de) 1995-07-06 1996-07-03 Rotationsschlitzvorrichtung

Country Status (2)

Country Link
EP (1) EP0752299A1 (de)
GB (1) GB9513771D0 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0955156A1 (de) * 1998-05-08 1999-11-10 Engico S.r.l. Vorrichtung zum Einschneiden und Rillen von Bögen aus Karton
WO1999058321A1 (en) * 1998-04-29 1999-11-18 Emba Machinery Ab Slitting unit for carton blank production
WO2000002715A1 (en) * 1998-07-09 2000-01-20 Newell Gregory J Independently driven slotter unit
WO2018070928A1 (en) * 2016-10-12 2018-04-19 Berg Industries Ab Dual box slotter
CN108527486A (zh) * 2018-05-30 2018-09-14 佛山市奥斯自动化设备有限公司 一种全自动纸板开槽机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB696390A (en) * 1951-04-06 1953-08-26 Deritend Eng Co Apparatus for slotting cardboard and the like for the manufacture of boxes
GB1042985A (en) * 1963-12-21 1966-09-21 Deritend Eng Co Improvements relating to apparatus for treating cardboard and like materials
FR2338135A1 (fr) * 1976-01-15 1977-08-12 Simon Container Mach Ltd Machine pour la fabrication d'ebauches de carton pour former des boites en carton
US4527788A (en) * 1984-05-26 1985-07-09 Hamada Printing Press Mfg. Co., Ltd. Printer-slotter with speed variable motor control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB696390A (en) * 1951-04-06 1953-08-26 Deritend Eng Co Apparatus for slotting cardboard and the like for the manufacture of boxes
GB1042985A (en) * 1963-12-21 1966-09-21 Deritend Eng Co Improvements relating to apparatus for treating cardboard and like materials
FR2338135A1 (fr) * 1976-01-15 1977-08-12 Simon Container Mach Ltd Machine pour la fabrication d'ebauches de carton pour former des boites en carton
US4527788A (en) * 1984-05-26 1985-07-09 Hamada Printing Press Mfg. Co., Ltd. Printer-slotter with speed variable motor control

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999058321A1 (en) * 1998-04-29 1999-11-18 Emba Machinery Ab Slitting unit for carton blank production
US6478725B1 (en) 1998-04-29 2002-11-12 Emba Machinery Ab Slitting unit for carton blank production
EP0955156A1 (de) * 1998-05-08 1999-11-10 Engico S.r.l. Vorrichtung zum Einschneiden und Rillen von Bögen aus Karton
WO2000002715A1 (en) * 1998-07-09 2000-01-20 Newell Gregory J Independently driven slotter unit
WO2018070928A1 (en) * 2016-10-12 2018-04-19 Berg Industries Ab Dual box slotter
US11318698B2 (en) 2016-10-12 2022-05-03 Emba Holding Aktiebolag Dual box slotter
CN108527486A (zh) * 2018-05-30 2018-09-14 佛山市奥斯自动化设备有限公司 一种全自动纸板开槽机
CN108527486B (zh) * 2018-05-30 2023-10-03 佛山市奥斯自动化设备有限公司 一种全自动纸板开槽机

Also Published As

Publication number Publication date
GB9513771D0 (en) 1995-09-06

Similar Documents

Publication Publication Date Title
US5957050A (en) Method and apparatus for effecting shingling of conveyed printed products
EP0449006A2 (de) Vorrichtung und Verfahren zum Abtrennen von Papierbahnen
EP3492229A1 (de) Vorrichtung und verfahren zum schneiden oder perforieren einer papierbahn
US5176371A (en) Rotary printing machine and printed web folding and handling system combination
US5713256A (en) Dual speed limits for a cut-off
US6139003A (en) Process and device for producing multi-layered newspaper products with a tabloid section
US4727784A (en) Web cut blank piling method and apparatus
CN103987516A (zh) 用于加工板元件的装置、加工单元和制造包装件的机器
US3279290A (en) Forming envelope blanks from a continuously travelling web of paper, or the like
EP0752299A1 (de) Rotationsschlitzvorrichtung
JPS6345304B2 (de)
GB2050895A (en) Improvements to machines for grooving sheets, particularly printed- circuit sheets
US3800640A (en) Apparatus and method for cutting a travelling web of material
US5386753A (en) Tab cutting
US3406959A (en) Method and apparatus for scoring and fan-folding strip material
GB2302834A (en) Rotary slotting device
US1772785A (en) Art of working cardboard and similar material
JPH0428538A (ja) スリッタスコアラ
US6669617B1 (en) Paper web folding and cutting apparatus
US3147676A (en) Scoring device
JP2831179B2 (ja) 回転ドラム式切断装置
JP2005246514A (ja) 紙のカッター装置
US6406417B1 (en) Device for continuously winding up longitudinally cut paper webs with rolls changed automatically at the machine speed
US992473A (en) Cutting and folding machine.
EP0251802B1 (de) Schneidmechanismus

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19970709