EP1679163A1 - Vorrichtung zum Entfernen von Ausbrechteilen aus einem Werkstoffbogen und stationäre Widerlageeinrichtung für dieselbe - Google Patents

Vorrichtung zum Entfernen von Ausbrechteilen aus einem Werkstoffbogen und stationäre Widerlageeinrichtung für dieselbe Download PDF

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Publication number
EP1679163A1
EP1679163A1 EP06290033A EP06290033A EP1679163A1 EP 1679163 A1 EP1679163 A1 EP 1679163A1 EP 06290033 A EP06290033 A EP 06290033A EP 06290033 A EP06290033 A EP 06290033A EP 1679163 A1 EP1679163 A1 EP 1679163A1
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EP
European Patent Office
Prior art keywords
abutment
matrix
stop
piece
sheet
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Withdrawn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
EP06290033A
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English (en)
French (fr)
Inventor
Yvon Raveleau
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1679163A1 publication Critical patent/EP1679163A1/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Withdrawn legal-status Critical Current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
    • 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
    • B26D2007/1881—Means for removing cut-out material or waste using countertools

Definitions

  • the present invention relates to a device for eliminating pre-cut pieces, in particular scrap, a sheet of material having cuts or the like as well as an abutment and a stop / matrix assembly for such a device.
  • It relates more particularly to a device for removing pre-cut pieces of a sheet of material in which said sheet is placed on a separation surface of a die so that the pre-cut piece covers a breakthrough of the die and is pushed towards the down through this breakthrough under the pressure of at least one ejection or punching member.
  • Such devices are known and are described in particular in DE-A-4.124.098.
  • the breakthrough is generally of smaller size than the precut pieces so that, during a thrust exerted by the punching member on the pre-cut piece, the pre-cut piece deforms inside said breakthrough to be ejected out of said breakthrough.
  • the problem with such a device is that it generates a number of scrap jams inside the breakthrough. These jams force a stop of the ejection station to clear said breakthrough.
  • the punching member cooperates with an abutment member disposed below the pre-cut piece and projecting at least partially in the piercing.
  • the first family concerns devices equipped with deformable stops.
  • the abutment member which, in a rest position, is substantially recessed or flush with the separating surface is capable of being deformed away from the separation surface during a pressure exerted by the punching member on the pre-cut piece to occupy a position inclined relative to the separation surface.
  • the second family of devices concerns devices equipped with stationary stop.
  • these stops are generally provided by a portion of the matrix, serving to define the breakthrough of said matrix, which projects into said matrix.
  • These stops are made of the same material as the matrix, namely wood.
  • the thickness of the abutment is relatively large.
  • the thickness of the abutment which is chosen to avoid again premature wear of the abutment, causes an increase in the ejection time and again a risk of jamming of the scrap inside said piercing.
  • this solution in which abutment and die are made in one piece requires the change of the entire die when the stop is damaged.
  • An object of the present invention is therefore to provide a device for eliminating pre-cut pieces of the aforementioned type, the longevity of the stops is significantly increased.
  • Another object of the present invention is to provide a device of the aforementioned type, the design of the stops can be adjusted at will ejection time without increasing the risk of jamming scrap.
  • the subject of the invention is a device for eliminating pre-cut pieces, in particular scraps, from a sheet of material comprising sections or the like, this device comprising an ejection member of the type punch arranged to cooperate with a matrix equipped with at least one breakthrough covered by the pre-cut piece of the sheet of material, this breakthrough being provided with at least one stationary stop to momentarily hold the precut piece to promote its separation from said sheet under the pressure of the ejection member during a relative displacement between ejection member and die, characterized in that the or at least one of the abutments is in the form of an insert made of rigid material , preferably of metal, and affects the general shape of a bracket whose branch is implanted in the thickness of the matrix and whose other arm, said free, partially bears against the surface of said matrix before protruding inside the breakthrough of the die to provide a support zone forming a stop of the pre-cut piece to be separated.
  • the invention also relates to a stationary stop of the type intended in particular to equip a breakthrough of a matrix of a device for eliminating pre-cut pieces of the aforementioned type, said stop being used to momentarily retain the pre-cut piece to promote its separation from a sheet of material having sections or the like, characterized in that said stop is made in the form of a rigid piece, preferably of metal, and has the general shape of a square whose branch is implantable in the thickness of the matrix and the other branch is able to partially support the surface of said matrix before protruding inside the breakthrough of the matrix to provide a support zone forming a stop of the pre-cut piece to be separated.
  • the subject of the invention is also an assembly of the type comprising at least one stationary abutment and a matrix capable of equipping a device for eliminating pre-cut pieces of a sheet of material of the aforementioned type, the matrix having at least one breakthrough covered by the pre-cut piece of the sheet of material, said stop equipping the breakthrough for temporarily holding the pre-cut piece to promote its separation from the sheet of material, characterized in that said stop is made in the form of a rigid piece, preferably in metal, and affects the general shape of a square whose one branch is implanted in the thickness of the matrix and whose other branch is partially supported on the surface of said matrix before projecting inside the breakthrough of the die to provide a support zone forming a stop of the pre-cut piece to be separated.
  • the device, object of the invention allows to eliminate precut pieces 2, including scrap, a sheet 1 of material having cuts or the like. These pre-cut pieces can still be called falling.
  • the sheet 1 of material is for example constituted by a pre-cut cardboard blank, each precut corresponding to a piece 2 to be subsequently eliminated.
  • This sheet 1 of material after undergoing a number of operations, is brought and placed on the separation surface of a die 4 so that the pre-cut piece 2 covers a breakthrough 5 of the die.
  • This breakthrough generally has a homothetic profile to the profile of the precut made in the sheet of material.
  • a punching member 3 is moved downwardly through this piercing 5 so as to exert pressure on the pre-cut piece 2 to allow its separation from the sheet of material 1.
  • This punching member 3 can affect a large number of shapes.
  • this punch 3 for ejection of the device has a needle-punched end 3A on the pre-cut piece 2 to be separated, preferably made in the form of a ring, so that the needling tips penetrate partially into the material of said piece 2 to prevent slippage of the piece 2 relative to said needled end of the punch 3.
  • This punch 3 also has a tubular body with a shoulder 3B marking the end of travel of said body during its insertion into its carrier plane. This results in a simplification of the assembly of the punching member 3 in its carrier plane.
  • This punching member 3 cooperates with at least one abutment member 6 disposed below the pre-cut piece 2 and projecting at least partially in the bore 5 as shown in FIGS. 1 to 4. This abutment member 6 is intended to retain momentarily the pre-cut piece 2 for the purpose of promoting its separation from the sheet 1 under the pressure of the punching member 3 during a relative displacement between the punching member 3 and the die 4.
  • the device, object of the invention may comprise, for each breakthrough 5, one or more stops. These stops may be of identical or different design.
  • each abutment 6 is in the form of an insert of rigid material, usually metal.
  • This abutment 6 affects the general shape of a bracket as illustrated in FIGS. 5 and 7.
  • This abutment 6 thus has a branch 7 of implantation in the thickness of the matrix 4 and a branch 8, said to be free, partially taking support on the surface, that is to say on the upper face facing the punching member 3 of said die 4 before projecting inside the breakthrough 5 of the die 4 to provide a zone of support forming stop of the piece 2 pre-cut to separate.
  • the upper surface or face of the matrix constitutes a bearing surface of the sheet 1 of material before biasing by a punch and is generally called the separation surface of the matrix.
  • abutment 6 to be supported by one of its branches on the surface or upper face of the matrix, which is generally in the form of a plate, excludes any use of an elastically deformable part to as a stop as is the case in the state of the art where the elastically deformable leg of the abutment extends in line with a vacuum constituted by a recess of the matrix opening into the breakthrough to allow a such deformation.
  • the end of the free branch 8, projecting from said penetration 5, of at least one abutment 6, is profiled to provide at least one bearing surface which decreases from the connection zone of the branches 7, 8 of the stop in the direction of the breakthrough 5 matrix 4 as shown in Figure 7.
  • This reduction of the bearing surface reduces the risk of premature wear of the abutment member.
  • the conformation of the end of the free branch 8 of the abutment 6 may make it possible to promote shear scrap or pre-cut piece 2.
  • the end of one of the branches, in particular the end of the branch 8 free of at least one stop 6, is shaped notch as illustrated in Figure 7, there is a shearing phenomenon of the pre-cut piece 2 which facilitates the separation of the pre-cut piece 2 of the sheet 1 material.
  • Other embodiments of the free ends of the branches 7, 8 of the abutment or stops can be envisaged.
  • the free end of one of the branches 7, 8 of at least one stop 6 can be V-shaped.
  • the branch 7 of implantation of a stop 6 in the die 4 may have, for its part, a tip-shaped end to facilitate its insertion into the thickness of the die 4.
  • the abutment 6 can then be made in the form of a reversible part allowing to use indifferently each of the branches 7, 8 of said abutment 6 as a branch 7 of implantation in the thickness of the matrix 4.
  • This configuration makes it possible, as illustrated in FIG. 6, to be able to position the stop members in the corners or angles of the breakthrough or along the edges. rectilinear of the breakthrough.
  • the corners or angles of the breakthrough are reserved for the stops with free branch 8 in the shape of a point, whereas the rectilinear edges are reserved for the abutments with end of the branch 8 in the form of V.
  • each stop member inside the die 4 is extremely easy.
  • a pre-drilling in the matrix is performed by laser.
  • the branch 7 of implantation of the abutment member 6 in the matrix is then forced into the hole made.
  • the matrix 4 may furthermore have, at the right of each abutment implantation point 6, a weakening of material, in particular by etching, in order to facilitate the penetration of the limb 8 of the abutment until it can be flush with the surface of the matrix. 4.
  • this etching will prove unnecessary, the press fitting to obtain a deformation to the right of the free branch 8 of the abutment intended to bear on said matrix.
  • no deformation of the matrix will be performed, pads 9 being, if necessary, used to cause an elevation of the sheet 1 of material as shown in Figure 2. These pads 9 are then plugged into the surface of the matrix and protrude above it.
  • the advantage of the embodiment of the abutment member 6 in the form of a bracket-shaped metal insert is to be able to deform such a piece at will without causing premature wear of the latter.
  • the free branch 8 of the abutment 6 can be inclined towards the breakthrough 5 to prevent braking in advance of the sheet 1 of material having cuts or the like.
  • the deformation of the free branch 8 of the abutment 6 further allows to vary at will the bearing surface of the piece 2 pre-cut on said stop. This setting again affects the ejection speed and limits the risk of jamming.
  • the free branch 8 of the abutment 6 projecting inside the penetration 5 may have a thickness of less than 1.5 mm, preferably of around 1 mm.
  • the stationary stops 6 can be arranged side by side and connected to each other by breaking primers which are torn before implantation of each stop 6 in the matrix 4 to obtain a separation of the stops. 6.
  • the succession of stops 6 is presented before implantation in the matrix 4 in the form of a flexible bead.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP06290033A 2005-01-07 2006-01-06 Vorrichtung zum Entfernen von Ausbrechteilen aus einem Werkstoffbogen und stationäre Widerlageeinrichtung für dieselbe Withdrawn EP1679163A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0500150A FR2880576B1 (fr) 2005-01-07 2005-01-07 Dispositif pour eliminer des morceaux predecoupes d'une feuille de matiere

Publications (1)

Publication Number Publication Date
EP1679163A1 true EP1679163A1 (de) 2006-07-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06290033A Withdrawn EP1679163A1 (de) 2005-01-07 2006-01-06 Vorrichtung zum Entfernen von Ausbrechteilen aus einem Werkstoffbogen und stationäre Widerlageeinrichtung für dieselbe

Country Status (2)

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EP (1) EP1679163A1 (de)
FR (1) FR2880576B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2992240A1 (fr) * 2012-06-20 2013-12-27 Yvon Raveleau Matrice femelle et son procede de fabrication
WO2017089675A1 (fr) 2015-11-26 2017-06-01 Raveleau Nicolas Dispositif pour eliminer des morceaux predecoupes, organe de butee et ensemble comprenant un tel dispositif

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3020581B1 (fr) * 2014-04-30 2016-04-15 Yvon Raveleau Procede et dispositif pour eliminer des morceaux predecoupes d'une feuille de matiere ainsi qu'un organe d'ejection pour un tel dispositif

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446702A2 (de) * 1990-03-12 1991-09-18 Franz Vossen Vorrichtung zum Entfernen von ausbrechteilen aus einem Werkstoffbogen od.dgl.
DE4009158A1 (de) * 1990-03-22 1991-09-26 Linhardt Karl Gmbh Vorrichtung zum ausbrechen von abfallstuecken mittels widerlagerraendern
EP0641632A2 (de) * 1993-09-03 1995-03-08 Nippon Die Steel Ausbrechwerkzeug für Stanzmaschinen zur Herstellung von Kartonagezuschnitten
FR2745220A1 (fr) * 1996-02-22 1997-08-29 Raveleau Yvon Dispositif pour eliminer des morceaux separes
FR2765135A1 (fr) * 1997-06-25 1998-12-31 Yvon Raveleau Organe de separation par poinconnage
WO1999051405A1 (de) * 1998-04-02 1999-10-14 Franz Vossen Vorrichtung zum entfernen von ausbrechteilen aus einem werkstoffbogen oder dergleichen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446702A2 (de) * 1990-03-12 1991-09-18 Franz Vossen Vorrichtung zum Entfernen von ausbrechteilen aus einem Werkstoffbogen od.dgl.
DE4009158A1 (de) * 1990-03-22 1991-09-26 Linhardt Karl Gmbh Vorrichtung zum ausbrechen von abfallstuecken mittels widerlagerraendern
EP0641632A2 (de) * 1993-09-03 1995-03-08 Nippon Die Steel Ausbrechwerkzeug für Stanzmaschinen zur Herstellung von Kartonagezuschnitten
FR2745220A1 (fr) * 1996-02-22 1997-08-29 Raveleau Yvon Dispositif pour eliminer des morceaux separes
FR2765135A1 (fr) * 1997-06-25 1998-12-31 Yvon Raveleau Organe de separation par poinconnage
WO1999051405A1 (de) * 1998-04-02 1999-10-14 Franz Vossen Vorrichtung zum entfernen von ausbrechteilen aus einem werkstoffbogen oder dergleichen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2992240A1 (fr) * 2012-06-20 2013-12-27 Yvon Raveleau Matrice femelle et son procede de fabrication
WO2017089675A1 (fr) 2015-11-26 2017-06-01 Raveleau Nicolas Dispositif pour eliminer des morceaux predecoupes, organe de butee et ensemble comprenant un tel dispositif

Also Published As

Publication number Publication date
FR2880576B1 (fr) 2007-02-23
FR2880576A1 (fr) 2006-07-14

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