EP0343338A1 - Bogentrennvorrichtung für Stanzmaschinen - Google Patents

Bogentrennvorrichtung für Stanzmaschinen Download PDF

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Publication number
EP0343338A1
EP0343338A1 EP89104967A EP89104967A EP0343338A1 EP 0343338 A1 EP0343338 A1 EP 0343338A1 EP 89104967 A EP89104967 A EP 89104967A EP 89104967 A EP89104967 A EP 89104967A EP 0343338 A1 EP0343338 A1 EP 0343338A1
Authority
EP
European Patent Office
Prior art keywords
blanking
edges
sheets
wires
sub
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Withdrawn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
EP89104967A
Other languages
English (en)
French (fr)
Inventor
Peter Stuart C/O Jowetts Limited Lenney
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.)
JOWETTS Ltd
Original Assignee
JOWETTS 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 JOWETTS Ltd filed Critical JOWETTS Ltd
Publication of EP0343338A1 publication Critical patent/EP0343338A1/de
Withdrawn legal-status Critical Current

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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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1818—Means for removing cut-out material or waste by pushing out
    • 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
    • B26F3/002—Precutting and tensioning or breaking
    • 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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D2007/189—Mounting blanking, stripping and break-out tools

Definitions

  • This invention relates to blanking apparatus, being apparatus for the separating into individual sub-sheets of a large sheet of cardboard or the like which has previously been cut to such an extent to define the individual sub-sheets, but leaving the individual sub-sheets connected together by catchpoints which are in fact broken during the blanking process.
  • Such blanking apparatus typically comprises a station of a machine for processing large printed sheets for example sheets which are printed to define carton box blanks and wherein the large sheets are in a first station cut and creased to define the individual blanks, at a second station the cut and creased large sheet is subjected to a stripping process in which the waste material is displaced from the large sheet leaving only the cut and creased blanks connected by the catchpoints, and the stripping station is followed by the blanking station whereat the catchpoints are broken, in order to split the large sheet into the individual sub-sheets each forming a cut and creased blank.
  • the large sheet is fed through the machine whilst it lies in a horizontal plane, and the respective stations include reciprocating means to perform the operations on the sheet.
  • a pattern of separating edges is created in a base support or panel, whilst an upper plate or panel has a series of punch members for punching the individual sub-sheets through apertures defined by said edges so that if for example each individual sheet defines forty sub-sheets there will be forty of said apertures defined by said edges, and as the machine works on a repeating basis, so at the blanking station forty piles of individual sub-sheets will gradually build up as subsequent sheets are cut and creased, stripped and blanked.
  • the present invention is concerned with providing a blanking apparatus whereby the aforesaid disadvantage will be obviated or mitigated.
  • a blanking apparatus comprises means defining blanking edges lying generally in a first direction, and means defining blanking edges lying generally in a second direction so as to define a plurality of apertures through which individual sub-sheets can be pushed by means of a punch plate or panel which cooperates with the blanking edges by reciprocating towards and away from the blanking edges, characterised in that the first blanking edges are arranged in a first plane lying transverse to the direction of reciprocation of the punch panel or plate, and the second blanking edges are arranged spaced from said first blanking edges in said direction of reciprocation by a sufficient extent to enable the sheets to be blanked into sub-sheets and then by the continued movement of the punch panel or plate to be blanked into the individual sub-­sheets by means of said second blanking edges.
  • first blanking edges will be parallel and in a machine as described above will extend in a direction of feed of the large sheets through the machine, whilst the second blanking edges also preferably will be parallel to each other but at right angles to the first blanking edges.
  • the first blanking edges may be constituted by flat bars arranged with edges thereof to form said blanking edges, whilst the second blanking edges may be defined by tensioned wires spaced from the edges of the bars which are remote from the first blanking edges.
  • the second blanking edges may be created by said wires by passing the wires through apertures formed in the bars forming the first blanking edges.
  • said wires can be threaded therethrough in order to create the required pattern of first and second blanking edges to suit the pattern of sub-sheets which will be blanked from the large sheets.
  • the large sheets will normally be blanked into individual sub-sheets of the same configuration and size, in some cases it may be required that the individual large sheets are to be blanked into sub-sheets which are of different sizes although perhaps of the same configuration.
  • first blanking edges should be spaced from the second blanking edges to a sufficient extent so that when blanking along the first edges takes place, the rows of sub-sheets can bend between adjacent first blanking edges as the rows are pushed between said first blanking edges, and then recover, before the rows meet the individual second blanking edges, so that the individual sheets can bend in a direction at right angles to the first direction of bending as the individual sub-sheets are blanked between adjacent second blanking edges, individual sub-sheets eventually being discharged from the blanking panel onto a pallet or other support so that columns of individual sub-­sheets can be built up on the pallet as the blanking process is repeated on a plurality of large sheets.
  • Fig. 3 illustrates why difficulty arises when an attempt is made to blank a sheet 10 into the individual sub-sheets in that if it is assumed as shown in Fig. 3 that the blanking framework or lattice comprises longitudinal bars 24 and transverse bars 26 having their blanking upper edges arranged in the same plane, then when a sub-sheet 12 as shown in Fig. 3 is forced through the aperture 28, because of dimensional tolerances, the sub-sheet 12 has to curve as shown at 30 and 32, simultaneously in two directions which means that the corners are turned up as the sheet passes through the frame and in fact the corners fold and crease which is undesirable and results in an unsatisfactory product.
  • the blanking is effected by applying the sheet 10 of Fig. 1 to a first set of blanking edges 34 defined by the top edges of flat bars 36 which in this example are arranged in parallel as shown, and to the underside of the bars 36 there are transverse wires 38 which are tensioned and which define second blanking edges for separating the individual sheets 12 transversely along the lines 16.
  • Fig. 4 also shows that the ends of the flat bars 36 are supported on brackets 40 carried by main frame rails 42.
  • the brackets 40 are adjustable lengthwise of the rails 42 as shown by arrow 44 and also vertically relative to the rails 42 as shown by arrow 46.
  • the adjustment means are conventional and are not shown.
  • the edges 34 and the wires 38 are arranged as two sets of edges so as to blank a sheet such as sheet 10 into individual and equally sized sub-sheets 12.
  • the arrangement of Fig. 5 provides a means whereby a sheet 10 sub-divided in a different fashion by longitudinal and transverse lines so as to define sub-sheets of different sizes can be blanked by an apparatus embodying the structure of Fig. 5.
  • a single rail 34 is shown, and the rail 34 receives guide tubes 48 in the positions shown, and the guide tubes receive a tensioned wire 50 so that different reaches 50A and 50B can be located to perform blanking of the edges of the sheets 12, but spaced longitudinally of the bar 34. It can be appreciated that by appropriately positioning guide tubes such as tubes 48 where required in the bar 34, so an appropriate groove pattern can be built up dependent upon the individual sub-sheets which are defined in the large sheet 10.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
EP89104967A 1988-03-22 1989-03-20 Bogentrennvorrichtung für Stanzmaschinen Withdrawn EP0343338A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888806780A GB8806780D0 (en) 1988-03-22 1988-03-22 Improvements relating to blanking apparatus
GB8806780 1988-03-22

Publications (1)

Publication Number Publication Date
EP0343338A1 true EP0343338A1 (de) 1989-11-29

Family

ID=10633860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104967A Withdrawn EP0343338A1 (de) 1988-03-22 1989-03-20 Bogentrennvorrichtung für Stanzmaschinen

Country Status (2)

Country Link
EP (1) EP0343338A1 (de)
GB (1) GB8806780D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20016800U1 (de) * 2000-09-29 2001-11-22 Hesse Stanzwerkzeuge GmbH, 31061 Alfeld Nutzentrenngitter
GB2474524A (en) * 2009-10-15 2011-04-20 Zaklad Produkcji Opakowan Karton Pak S A A tool for separating cardboard blanks

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2413999A (en) * 1944-06-22 1947-01-07 Box Blank Corp Stripping machine
DE2031185A1 (de) * 1969-09-15 1971-05-13 Simautics, Ine , West Caldwell, NJ (V St A ) Verfahren und Vorrichtung zum Auf teilen von Faltschachtelzuschnitte enthal tenden Pappbogen
EP0152214A2 (de) * 1984-01-26 1985-08-21 The Mead Corporation Bogentrennvorrichtung für Stanzmaschinen
US4573384A (en) * 1984-08-01 1986-03-04 Jones Frank W Dicing device for sliced food articles
US4653680A (en) * 1985-04-25 1987-03-31 Regan Barrie F Apparatus for breaking semiconductor wafers and the like

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2413999A (en) * 1944-06-22 1947-01-07 Box Blank Corp Stripping machine
DE2031185A1 (de) * 1969-09-15 1971-05-13 Simautics, Ine , West Caldwell, NJ (V St A ) Verfahren und Vorrichtung zum Auf teilen von Faltschachtelzuschnitte enthal tenden Pappbogen
EP0152214A2 (de) * 1984-01-26 1985-08-21 The Mead Corporation Bogentrennvorrichtung für Stanzmaschinen
US4573384A (en) * 1984-08-01 1986-03-04 Jones Frank W Dicing device for sliced food articles
US4653680A (en) * 1985-04-25 1987-03-31 Regan Barrie F Apparatus for breaking semiconductor wafers and the like

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20016800U1 (de) * 2000-09-29 2001-11-22 Hesse Stanzwerkzeuge GmbH, 31061 Alfeld Nutzentrenngitter
GB2474524A (en) * 2009-10-15 2011-04-20 Zaklad Produkcji Opakowan Karton Pak S A A tool for separating cardboard blanks
EP2311610A1 (de) 2009-10-15 2011-04-20 Zaklad Produkcji Opakowan Karton-Pak S.A. Werkzeug zum Trennen von Kartonblättern
GB2474524B (en) * 2009-10-15 2012-03-14 Zaklad Produkcji Opakowan Karton Pak S A A tool for separating cardboard blanks

Also Published As

Publication number Publication date
GB8806780D0 (en) 1988-04-20

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