EP0886565A1 - Device for removing separated portions - Google Patents

Device for removing separated portions

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Publication number
EP0886565A1
EP0886565A1 EP97906215A EP97906215A EP0886565A1 EP 0886565 A1 EP0886565 A1 EP 0886565A1 EP 97906215 A EP97906215 A EP 97906215A EP 97906215 A EP97906215 A EP 97906215A EP 0886565 A1 EP0886565 A1 EP 0886565A1
Authority
EP
European Patent Office
Prior art keywords
blade
breakthrough
cavity
head
housing
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.)
Granted
Application number
EP97906215A
Other languages
German (de)
French (fr)
Other versions
EP0886565B1 (en
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 EP0886565A1 publication Critical patent/EP0886565A1/en
Application granted granted Critical
Publication of EP0886565B1 publication Critical patent/EP0886565B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/329—Plural breakers
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/371—Movable breaking tool

Definitions

  • the present invention relates to a device for removing pre-cut pieces, in particular scrap, from a sheet of material comprising cuts or the like.
  • It relates more particularly to a device for removing pre-cut pieces from a sheet of material, in which said sheet is placed on a separation surface of a matrix so that the pre-cut piece covers a breakthrough in the matrix and is pushed towards the bottom through this breakthrough under the pressure of at least one separation or punching member.
  • Such devices are known and are described in particular in patent DE-A-4,124,098.
  • the breakthrough is generally of dimension smaller than the precut piece so that, during a push exerted by the punching member on the precut piece, the precut piece deforms inside said pierced to be ejected from said breakthrough.
  • the problem with such devices is that they generate a number of waste jams at inside the breakthrough. These jams require a stop of the ejection station to clear said breakthrough.
  • the punching member cooperates with an elastic stop member arranged below the pre-cut piece and protruding at least partially into the opening.
  • This abutment member which, in a rest position, is substantially set back or flush with the separation surface, is liable to be deformed by moving away from the separation surface during a pressure exerted by the punching member on the pre-cut piece to occupy an inclined position relative to the separation surface.
  • An example of such a device is described in particular in patent EP-A-446,702. In this case, however, it can be seen that the scrap is eliminated by sliding of the elastic stop member. Sometimes the pre-cut piece remains attached to the punching member. In the case of this device, there is then no longer any possibility of detaching the scrap from the punching member.
  • the present invention therefore aims to provide a device for eliminating precut pieces, in which the elastic stop member can be installed on the matrix in masked time, its positioning on the matrix being such that it does not increase the size of the matrix while remaining easily accessible so as to facilitate its assembly and disassembly.
  • Another object of the present invention is to provide a device for eliminating pre-cut pieces, the elastic stop member of which can be positioned in a precise and possibly adjustable manner.
  • the subject of the invention is a device for eliminating precut pieces, in particular scrap, from a sheet of material comprising cuts or the like, said sheet being placed on a separation surface of a matrix so that that the precut piece covers a breakthrough in the die and is pushed down through this breakthrough under the pressure of at least one punching member, said punching member cooperating with at least one elastic stop member arranged below the piece pre-cut and projecting at least partially into said breakthrough, characterized in that the breakthrough of the matrix comprises at least one housing radiating in the direction of an axis passing through said breakthrough to open into this breakthrough, this housing being shaped to receive retention of the head of a blade constituting an elastic abutment member, this blade disappearing against a pre-cut piece when s a pushing movement exerted by the punching member passing through the breakthrough of the die, the free end of the blade opposing the return of the scrap after each separation operation.
  • the head of the blade is shouldered to prevent any displacement of said elastic stop member in the direction of the axis passing through said breakthrough during a separation operation.
  • Figures 1 to 3 show partial schematic sectional views of successive separation operations to remove a pre-cut piece of a sheet of material
  • FIG. 4 represents a top view of a matrix according to the invention.
  • Figure 5 shows a cross-sectional view of a stop member according to the invention.
  • the device which is the subject of the invention makes it possible to eliminate precut pieces 11, in particular scrap, from a sheet of material 10 comprising cuts or the like. These precut pieces 11 can also be called scraps.
  • the sheet of material 10 is for example constituted by a blank of pre-cut cardboard, each pre-cut corresponding to a piece which must subsequently be eliminated.
  • This sheet of material 10 after having undergone a certain number of operations, is brought and placed on the separation surface 2 of a matrix 1 so that the pre-cut piece 11 covers a breakthrough 3 of the matrix 1.
  • This breakthrough 3 generally has a profile which is homothetic to the profile of the precut made in the material sheet 10.
  • the breakthrough 3 has a rectangular shape. It can therefore be assumed that the precut piece 11 will also have a rectangular shape.
  • a punching member 12 is moved downward through this breakthrough 3 so as to exert pressure on the pre-cut piece 11 to allow its separation from the sheet of material 10.
  • This punching member 12 can have a large number of shapes. In the examples shown in Figures 1 to 3, it is formed of a blade machined at its free end so as to define needles or points. The dimensions of the steel blade are variable depending on the geometry of the scrap and the quality of the material sheet.
  • the base of this punching tool is generally conical in order to force the blade into the upper ejection board. A shoulder prevents this blade from crossing the board during excessive pressure.
  • the tips, which are formed at the end of the blade are generally convex in shape. The number of spikes is variable. Likewise, their layout online or staggered can be changed. There are also punching members affecting the shape of needles distributed uniformly on the surface of the pre-cut piece 11.
  • the breakthrough 3 of the matrix 1 comprises at least one housing 4 radiating in the direction of the transverse axis of the said breakthrough 3 to open into this breakthrough 3.
  • This housing 4 is shaped to receive the head 7A of a blade with retention 7B constituting the elastic stop member.
  • the blade 7B is erased against a precut piece 11 during a pushing movement exerted by the punching member 12 passing through the breakthrough 3 of the die 1, as shown in Figure 2.
  • the end free of the blade 7B opposes the return of the waste 11 after each separation operation, as shown in FIG. 3.
  • each housing 4 of the breakthrough 3 is shouldered to delimit, between its shoulder 5 and its mouth 6 in said breakthrough 3, a first cavity 4A serving for the reception of the blade 7B constituting the elastic stop member, this housing providing beyond said shoulder 5 a second cavity 4B receiving interlocking the head 7A of said blade held fixed inside said cavity 4B.
  • This embodiment of the housing 4 is notably represented in FIG. 4.
  • the first cavity 4A is of section greater than the section of the blade 7B.
  • the blade 7B can freely move inside the cavity 4A.
  • the head of the blade can be embedded inside the second cavity 4B.
  • This head 7A can have a large number of shapes.
  • An exemplary embodiment of this head is provided in FIG. 5.
  • the head 7A of the blade is hollow to allow, during its introduction into the second cavity 4B, its deformation so as to facilitate its forced introduction into said second cavity 4B. This deformation is obtained thanks to the deformation chamber 8 thus formed.
  • This head 7A of the blade can also have a substantially truncated-pyramidal bowl shape so as to obtain an assembly of the conical fitting type between the blade head 7A and the second cavity 4B of the housing of the opening 3 of the matrix 1.
  • the blade head 7A and the blade 7B came from molding and formed in one piece.
  • the housing 4 of the breakthrough 3 is generally a through housing insofar as this housing is produced by laser cutting of the matrix 1. It is therefore possible to introduce the elastic stop member on one side or on the other side of the housing 4 when this stop member elastic, in particular the head of said member, is embedded inside said housing. This thus makes it possible to obtain a device whose distance between the separation surface 2 of the matrix 1 and the bearing surface of the blade 7B on the pre-cut piece 11 can vary easily and very precisely.

Landscapes

  • 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)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Surgical Instruments (AREA)
  • Sink And Installation For Waste Water (AREA)

Abstract

PCT No. PCT/FR97/00298 Sec. 371 Date Aug. 21, 1998 Sec. 102(e) Date Aug. 21, 1998 PCT Filed Feb. 18, 1997 PCT Pub. No. WO97/30829 PCT Pub. Date Aug. 28, 1997A device for removing pre-cut portions of a material sheet (10) comprising scores or the like. The sheet is placed on the cutting surface (2) of a die (1) so that the pre-cut portion (11) covers an opening (3) in the die (1). The opening (3) in the die (1) comprises at least one recess (4) extending radially towards the axis of the opening (3) and communicating therewith. The recess (4) is shaped in such a way that the head (7A) of a blade (7B) forming a resilient abutment member is retained therein. The blade (7B) yields to the pre-cut portion when a cutting member (12) passing through the opening (3) in the die (1) exerts pressure thereon. The free end of the blade (7B) prevents the discarded portion (11) from returning after each cutting step.

Description

Dispositif pour éliminer des morceaux séparésDevice for removing separate pieces
La présente invention concerne un dispositif pour éliminer des morceaux prédécoupés, notamment des rebuts, d'une feuille de matière comportant des coupes ou équivalent.The present invention relates to a device for removing pre-cut pieces, in particular scrap, from a sheet of material comprising cuts or the like.
Elle concerne plus particulièrement un dispositif pour éliminer des morceaux prédécoupés d'une feuille de matière, dans lequel ladite feuille est posée sur une surface de séparation d'une matrice de telle sorte que le morceau prédécoupé recouvre une percée de la matrice et est poussé vers le bas à travers cette percée sous la pression d'au moins un organe de séparation ou de poinçonnage.It relates more particularly to a device for removing pre-cut pieces from a sheet of material, in which said sheet is placed on a separation surface of a matrix so that the pre-cut piece covers a breakthrough in the matrix and is pushed towards the bottom through this breakthrough under the pressure of at least one separation or punching member.
De tels dispositifs sont connus et sont notamment décrits dans le brevet DE-A-4.124.098. Dans le cas de ces dispositifs, la percée est généralement de dimension inférieure au morceau prédécoupé de telle sorte que, lors d'une poussée exercée par l'organe de poinçonnage sur le morceau prédécoupé, le morceau prédécoupé se déforme à l'intérieur de ladite percée pour être éjecté hors de ladite percée. Le problème de tels dispositifs est qu'ils génèrent un certain nombre de coincements du rebut à l'intérieur de la percée. Ces coincements obligent à un arrêt de la station d'éjection pour dégager ladite percée.Such devices are known and are described in particular in patent DE-A-4,124,098. In the case of these devices, the breakthrough is generally of dimension smaller than the precut piece so that, during a push exerted by the punching member on the precut piece, the precut piece deforms inside said pierced to be ejected from said breakthrough. The problem with such devices is that they generate a number of waste jams at inside the breakthrough. These jams require a stop of the ejection station to clear said breakthrough.
Dans des dispositifs plus perfectionnés, l'organe de poinçonnage coopère avec un organe de butée élastique disposé en-dessous du morceau prédécoupé et faisant saillie au moins partiellement dans la percée. Cet organe de butée qui, dans une position de repos, est sensiblement disposé en retrait ou en affleurement de la surface de séparation, est susceptible d'être déformé en s 'écartant de la surface de séparation lors d'une pression exercée par l'organe de poinçonnage sur le morceau prédécoupé pour occuper une position inclinée par rapport à la surface de séparation. Un exemple d'un tel dispositif est notamment décrit dans le brevet EP-A-446.702. Dans ce cas toutefois, on constate que le rebut est éliminé par glissement de l'organe de butée élastique. Il arrive parfois que le morceau prédécoupé reste fixé à l'organe de poinçonnage. Dans le cas de ce dispositif, il n'y a alors plus aucune possibilité de détacher le rebut de l'organe de poinçonnage. En outre, on note qu'un tel dispositif nécessite de fixer chaque organe de butée au moyen d'un organe de fixation approprié tel qu'une vis. Il en résulte un montage long et fastidieux. En outre, les organes de butée utilisés sont des organes de forme complexe donc onéreux. Enfin, un tel dispositif présente un encombrement important en-dessous de la matrice alors que, dans toutes les stations d'éjection, en général, il existe très peu de place entre la surface inférieure de la matrice et le reste de la station. Enfin, le démontage d'un tel organe de butée est relativement difficile du fait de son inaccessibilité.In more sophisticated devices, the punching member cooperates with an elastic stop member arranged below the pre-cut piece and protruding at least partially into the opening. This abutment member which, in a rest position, is substantially set back or flush with the separation surface, is liable to be deformed by moving away from the separation surface during a pressure exerted by the punching member on the pre-cut piece to occupy an inclined position relative to the separation surface. An example of such a device is described in particular in patent EP-A-446,702. In this case, however, it can be seen that the scrap is eliminated by sliding of the elastic stop member. Sometimes the pre-cut piece remains attached to the punching member. In the case of this device, there is then no longer any possibility of detaching the scrap from the punching member. In addition, it should be noted that such a device requires fixing each stop member by means of an appropriate fixing member such as a screw. This results in a long and tedious assembly. In addition, the abutment members used are members of complex shape which are therefore expensive. Finally, such a device has a large size below the matrix while in all ejection stations, in general, there is very little space between the bottom surface of the matrix and the rest of the station. Finally, the disassembly of such a stop member is relatively difficult because of its inaccessibility.
La présente invention a donc pour objet de proposer un dispositif pour éliminer des morceaux prédécoupés, dans lequel l'organe de butée élastique peut être installé sur la matrice en temps masqué, son positionnement sur la matrice étant tel qu'il n'augmente pas l'encombrement de la matrice tout en restant aisément accessible de manière à faciliter son montage et son démontage.The present invention therefore aims to provide a device for eliminating precut pieces, in which the elastic stop member can be installed on the matrix in masked time, its positioning on the matrix being such that it does not increase the size of the matrix while remaining easily accessible so as to facilitate its assembly and disassembly.
Un autre but de la présente invention est de proposer un dispositif pour éliminer des morceaux prédécoupés dont l'organe de butée élastique peut être positionné de manière précise et éventuellement réglable.Another object of the present invention is to provide a device for eliminating pre-cut pieces, the elastic stop member of which can be positioned in a precise and possibly adjustable manner.
A cet effet, l'invention a pour objet un dispositif pour éliminer des morceaux prédécoupés, notamment des rebuts, d'une feuille de matière comportant des coupes ou équivalent, ladite feuille étant posée sur une surface de séparation d'une matrice de telle sorte que le morceau prédécoupé recouvre une percée de la matrice et est poussé vers le bas à travers cette percée sous la pression d'au moins un organe de poinçonnage, ledit organe de poinçonnage coopérant avec au moins un organe de butée élastique disposé en-dessous du morceau prédécoupé et faisant saillie au moins partiellement dans ladite percée, caractérisé en ce que la percée de la matrice comporte au moins un logement rayonnant en direction d'un axe traversant de ladite percée pour déboucher dans cette percée, ce logement étant conformé pour recevoir à rétention la tête d'une lame constituant un organe de butée élastique, cette lame s'effaçant à 1 'encontre d'un morceau prédécoupé lors d'un mouvement de poussée exercé par l'organe de poinçonnage traversant la percée de la matrice, l'extrémité libre de la lame s'opposant au retour du rebut après chaque opération de séparation.To this end, the subject of the invention is a device for eliminating precut pieces, in particular scrap, from a sheet of material comprising cuts or the like, said sheet being placed on a separation surface of a matrix so that that the precut piece covers a breakthrough in the die and is pushed down through this breakthrough under the pressure of at least one punching member, said punching member cooperating with at least one elastic stop member arranged below the piece pre-cut and projecting at least partially into said breakthrough, characterized in that the breakthrough of the matrix comprises at least one housing radiating in the direction of an axis passing through said breakthrough to open into this breakthrough, this housing being shaped to receive retention of the head of a blade constituting an elastic abutment member, this blade disappearing against a pre-cut piece when s a pushing movement exerted by the punching member passing through the breakthrough of the die, the free end of the blade opposing the return of the scrap after each separation operation.
Selon une forme de réalisation préférée de l'invention, la tête de la lame est épaulée pour empêcher tout déplacement dudit organe de butée élastique en direction de l'axe traversant de ladite percée lors d'une opération de séparation. L'invention sera bien comprise à la lecture de la description suivante d'un exemple de réalisation, en référence aux dessins annexés dans lesquels :According to a preferred embodiment of the invention, the head of the blade is shouldered to prevent any displacement of said elastic stop member in the direction of the axis passing through said breakthrough during a separation operation. The invention will be clearly understood on reading the following description of an exemplary embodiment, with reference to the accompanying drawings in which:
les figures 1 à 3 représentent des vues en coupe schématique partielles des opérations successives de séparation pour éliminer un morceau prédécoupé d'une feuille de matière ;Figures 1 to 3 show partial schematic sectional views of successive separation operations to remove a pre-cut piece of a sheet of material;
la figure 4 représente une vue de dessus d'une matrice conforme à l'invention etFIG. 4 represents a top view of a matrix according to the invention and
la figure 5 représente une vue en coupe transversale d'un organe de butée conforme à l'invention.Figure 5 shows a cross-sectional view of a stop member according to the invention.
Le dispositif, objet de l'invention, permet d'éliminer des morceaux prédécoupés 11, notamment des rebuts, d'une feuille de matière 10 comportant des coupes ou équivalent. Ces morceaux prédécoupés 11 peuvent encore être appelés chutes. Généralement, la feuille de matière 10 est par exemple constituée par un flan en carton prédécoupé, chaque prédécoupe correspondant à un morceau devant par la suite être éliminé.The device which is the subject of the invention makes it possible to eliminate precut pieces 11, in particular scrap, from a sheet of material 10 comprising cuts or the like. These precut pieces 11 can also be called scraps. Generally, the sheet of material 10 is for example constituted by a blank of pre-cut cardboard, each pre-cut corresponding to a piece which must subsequently be eliminated.
Cette feuille de matière 10, après avoir subi un certain nombre d'opérations, est amenée et posée sur la surface de séparation 2 d'une matrice 1 de telle sorte que le morceau prédécoupé 11 recouvre une percée 3 de la matrice 1. Cette percée 3 présente généralement un profil homothétique au profil de la prédécoupe réalisée dans la feuille de matière 10. Ainsi, dans l'exemple fourni à la figure 3, la percée 3 affecte une forme rectangulaire. On peut donc supposer que le morceau prédécoupé 11 aura également une forme rectangulaire.This sheet of material 10, after having undergone a certain number of operations, is brought and placed on the separation surface 2 of a matrix 1 so that the pre-cut piece 11 covers a breakthrough 3 of the matrix 1. This breakthrough 3 generally has a profile which is homothetic to the profile of the precut made in the material sheet 10. Thus, in the example provided in FIG. 3, the breakthrough 3 has a rectangular shape. It can therefore be assumed that the precut piece 11 will also have a rectangular shape.
Un organe de poinçonnage 12 est déplacé vers le bas à travers cette percée 3 de manière à exercer une pression sur le morceau prédécoupé 11 pour permettre sa séparation d'avec la feuille de matière 10. Cet organe de poinçonnage 12 peut affecter un grand nombre de formes. Dans les exemples représentés aux figures 1 à 3, il est formé d'une lame usinée à son extrémité libre de manière à délimiter des aiguilles ou des pointes. Les dimensions de la lame d'acier sont variables en fonction de la géométrie du rebut et de la qualité de la feuille de matière. La base de cet outil de poinçonnage est généralement conique afin d'insérer à force la lame dans la planche supérieure d'éjection. Un epaulement empêche cette lame de traverser la planche lors d'une pression excessive. Les pointes, qui sont ménagées à l'extrémité de la lame, sont généralement de forme convexe. Le nombre de pointes est variable. De même, leur disposition en ligne ou en quinconce peut être modifiée. Il existe également des organes de poinçonnage affectant la forme d'aiguilles réparties de manière uniforme à la surface du morceau prédécoupé 11.A punching member 12 is moved downward through this breakthrough 3 so as to exert pressure on the pre-cut piece 11 to allow its separation from the sheet of material 10. This punching member 12 can have a large number of shapes. In the examples shown in Figures 1 to 3, it is formed of a blade machined at its free end so as to define needles or points. The dimensions of the steel blade are variable depending on the geometry of the scrap and the quality of the material sheet. The base of this punching tool is generally conical in order to force the blade into the upper ejection board. A shoulder prevents this blade from crossing the board during excessive pressure. The tips, which are formed at the end of the blade, are generally convex in shape. The number of spikes is variable. Likewise, their layout online or staggered can be changed. There are also punching members affecting the shape of needles distributed uniformly on the surface of the pre-cut piece 11.
Cet organe de poinçonnage 12 coopère avec au moins un organe de butée élastique 7B disposé en-dessous du morceau prédécoupé 11 et faisant saillie au moins partiellement dans la percée 3, comme le montre la figure 1. Pour permettre le positionnement de cet organe de butée élastique, la percée 3 de la matrice 1 comporte au moins un logement 4 rayonnant en direction de l'axe traversant de ladite percée 3 pour déboucher dans cette percée 3. Ce logement 4 est conformé pour recevoir à rétention la tête 7A d'une lame 7B constituant l'organe de butée élastique. La lame 7B s'efface à 1 'encontre d'un morceau prédécoupé 11 lors d'un mouvement de poussée exercé par l'organe de poinçonnage 12 traversant la percée 3 de la matrice 1, comme le montre la figure 2. L'extrémité libre de la lame 7B s'oppose au retour du rebut 11 après chaque opération de séparation, comme le montre la figure 3.This punching member 12 cooperates with at least one elastic stop member 7B disposed below the pre-cut piece 11 and projecting at least partially into the opening 3, as shown in FIG. 1. To allow the positioning of this stop member elastic, the breakthrough 3 of the matrix 1 comprises at least one housing 4 radiating in the direction of the transverse axis of the said breakthrough 3 to open into this breakthrough 3. This housing 4 is shaped to receive the head 7A of a blade with retention 7B constituting the elastic stop member. The blade 7B is erased against a precut piece 11 during a pushing movement exerted by the punching member 12 passing through the breakthrough 3 of the die 1, as shown in Figure 2. The end free of the blade 7B opposes the return of the waste 11 after each separation operation, as shown in FIG. 3.
Pour empêcher tout déplacement de l'organe de butée élastique en direction de l'axe traversant de la percée 3 lors d'une opération de séparation, la tête 7A de la lame est épaulée. Parallèlement, chaque logement 4 de la percée 3 est épaulé pour délimiter, entre son epaulement 5 et son embouchure 6 dans ladite percée 3, une première cavité 4A servant à la réception de la lame 7B constituant l'organe de butée élastique, ce logement ménageant au-delà dudit epaulement 5 une seconde cavité 4B recevant à emboîtement la tête 7A de ladite lame maintenue fixe à l'intérieur de ladite cavité 4B. Cette forme de réalisation du logement 4 est notamment représentée à la figure 4.To prevent any displacement of the elastic stop member towards the axis passing through the breakthrough 3 during a separation operation, the head 7A of the blade is supported. In parallel, each housing 4 of the breakthrough 3 is shouldered to delimit, between its shoulder 5 and its mouth 6 in said breakthrough 3, a first cavity 4A serving for the reception of the blade 7B constituting the elastic stop member, this housing providing beyond said shoulder 5 a second cavity 4B receiving interlocking the head 7A of said blade held fixed inside said cavity 4B. This embodiment of the housing 4 is notably represented in FIG. 4.
Pour permettre un fonctionnement parfait de l'organe de butée élastique, la première cavité 4A est de section supérieure à la section de la lame 7B. Ainsi, la lame 7B peut librement se déplacer à l'intérieur de la cavité 4A. La tête de la lame peut quant à elle être encastrée à l'intérieur de la seconde cavité 4B. Cette tête 7A peut affecter un grand nombre de formes. Un exemple de réalisation de cette tête est fourni à la figure 5. Dans ce cas, la tête 7A de la lame est creuse pour permettre, lors de son introduction dans la seconde cavité 4B, sa déformation de manière à faciliter son introduction à force dans ladite seconde cavité 4B. Cette déformation est obtenue grâce à la chambre de déformation 8 ainsi ménagée. Cette tête 7A de la lame peut également affecter une forme de cuvette sensiblement tronc-pyramidale de manière à obtenir un assemblage de type à emmanchement conique entre la tête 7A de lame et la seconde cavité 4B du logement de la percée 3 de la matrice 1.To allow perfect operation of the elastic stop member, the first cavity 4A is of section greater than the section of the blade 7B. Thus, the blade 7B can freely move inside the cavity 4A. The head of the blade can be embedded inside the second cavity 4B. This head 7A can have a large number of shapes. An exemplary embodiment of this head is provided in FIG. 5. In this case, the head 7A of the blade is hollow to allow, during its introduction into the second cavity 4B, its deformation so as to facilitate its forced introduction into said second cavity 4B. This deformation is obtained thanks to the deformation chamber 8 thus formed. This head 7A of the blade can also have a substantially truncated-pyramidal bowl shape so as to obtain an assembly of the conical fitting type between the blade head 7A and the second cavity 4B of the housing of the opening 3 of the matrix 1.
Généralement, pour des raisons de simplification de construction, la tête 7A de lame et la lame 7B sont venues de moulage et formées d'une seule pièce. Le logement 4 de la percée 3 est quant à lui généralement un logement traversant dans le mesure où ce logement est réalisé par découpe au laser de la matrice 1. Il est donc possible d'introduire l'organe de butée élastique d'un côté ou de l'autre du logement 4 lorsque cet organe de butée élastique, en particulier la tête dudit organe, est encastré à l'intérieur dudit logement. Ceci permet ainsi d'obtenir un dispositif dont la distance entre la surface de séparation 2 de la matrice 1 et la surface d'appui de la lame 7B sur le morceau prédécoupé 11 peut varier de manière aisée et ce de manière très précise. De la même manière, en partant d'une face de la matrice, par exemple la face supérieure de la matrice comportant ce logement traversant débouchant dans la percée 3, il est possible, dans le cas d'une forme de réalisation de l'organe de butée conforme à la figure 5, d'introduire l'organe de butée de telle sorte que la partie haute, représentée par la lettre H dans la figure 5, de l'organe de butée soit disposée en affleurement ou légèrement en retrait de la surface de séparation 2 de la matrice ou, à l'inverse, de disposer cet organe de butée élastique de manière telle que la partie basse de cet organe, représentée par la lettre B à la figure 5, soit disposée en retrait ou en affleurement de la surface de séparation. Là encore, un tel mode de réalisation permet de faire varier la distance entre la surface de séparation de la matrice et la surface d'appui de la lame sur le morceau prédécoupé sans modifier les éléments constitutifs d'un tel dispositif.Generally, for reasons of simplification of construction, the blade head 7A and the blade 7B came from molding and formed in one piece. The housing 4 of the breakthrough 3 is generally a through housing insofar as this housing is produced by laser cutting of the matrix 1. It is therefore possible to introduce the elastic stop member on one side or on the other side of the housing 4 when this stop member elastic, in particular the head of said member, is embedded inside said housing. This thus makes it possible to obtain a device whose distance between the separation surface 2 of the matrix 1 and the bearing surface of the blade 7B on the pre-cut piece 11 can vary easily and very precisely. In the same way, starting from one face of the matrix, for example the upper face of the matrix comprising this through housing opening into the breakthrough 3, it is possible, in the case of an embodiment of the member abutment according to FIG. 5, to introduce the abutment member so that the upper part, represented by the letter H in FIG. 5, of the abutment member is arranged flush or slightly set back from the separation surface 2 of the matrix or, conversely, to arrange this resilient abutment member in such a way that the lower part of this member, represented by the letter B in FIG. the separation surface. Again, such an embodiment makes it possible to vary the distance between the separation surface of the matrix and the bearing surface of the blade on the pre-cut piece without modifying the constituent elements of such a device.
Bien évidemment, l'invention ne se limite pas aux formes de réalisation précitées mais englobe au contraire un grand nombre d'autres modes de réalisation de l'invention. Obviously, the invention is not limited to the abovementioned embodiments but on the contrary encompasses a large number of other embodiments of the invention.

Claims

REVENDICATIONS
1. Dispositif pour éliminer des morceaux prédécoupés (11), notamment des rebuts, d'une feuille de matière (10) comportant des coupes ou équivalent, ladite feuille étant posée sur une surface de séparation (2) d'une matrice (1) de telle sorte que le morceau prédécoupé (11) recouvre une percée (3) de la matrice (1) et est poussé vers le bas à travers cette percée (3) sous la pression d'au moins un organe de poinçonnage (12), ledit organe de poinçonnage (12) coopérant avec au moins un organe de butée élastique (7B) disposé en-dessous du morceau prédécoupé et faisant saillie au moins partiellement dans ladite percée (3), caractérisé en ce que la percée (3) de la matrice (1) comporte au moins un logement (4) rayonnant en direction d'un axe traversant de ladite percée (3) pour déboucher dans cette percée (3), ce logement (4) étant conformé pour recevoir à rétention la tête (7A) d'une lame (7B) constituant un organe de butée élastique, cette lame (7B) s'effaçant à l'encontre d'un morceau prédécoupé (11) lors d'un mouvement de poussée exercé par l'organe de poinçonnage (12) traversant la percée (3) de la matrice (1), l'extrémité libre de la lame (7B) s'opposant au retour du rebut (11) après chaque opération de séparation.1. Device for removing pre-cut pieces (11), in particular scrap, from a sheet of material (10) comprising cuts or the like, said sheet being placed on a separation surface (2) of a matrix (1) so that the pre-cut piece (11) covers a breakthrough (3) in the die (1) and is pushed down through this breakthrough (3) under the pressure of at least one punching member (12), said punching member (12) cooperating with at least one elastic stop member (7B) disposed below the pre-cut piece and projecting at least partially into said breakthrough (3), characterized in that the breakthrough (3) of the matrix (1) comprises at least one housing (4) radiating in the direction of an axis passing through said breakthrough (3) to lead into this breakthrough (3), this housing (4) being shaped to receive the head retention (7A ) of a blade (7B) constituting an elastic stop member, this blade (7B) erasing against a precut piece (11) during a pushing movement exerted by the punching member (12) passing through the breakthrough (3) of the die (1), the free end of the blade (7B) opposing the return of the waste (11) after each separation operation.
2. Dispositif selon la revendication 1, caractérisé en ce que la tête (7A) de la lame (7B) est épaulée pour empêcher tout déplacement dudit organe de butée élastique en direction de l'axe traversant de ladite percée (3) lors d'une opération de séparation.2. Device according to claim 1, characterized in that the head (7A) of the blade (7B) is shouldered to prevent any displacement of said elastic abutment member towards the axis passing through said breakthrough (3) a separation operation.
3. Dispositif selon l'une des revendications 1 et 2, caractérisé en ce que chaque logement (4) de la percée (3) est épaulé pour délimiter entre son epaulement (5) et son embouchure (6) dans ladite percée une première cavité (4A) servant à la réception de la lame (7B) constituant l'organe de butée élastique et ménageant au-delà dudit epaulement (5) une seconde cavité (4B) recevant à emboîtement la tête (7A) de ladite lame maintenue fixe à l'intérieur de ladite cavité (4B) .3. Device according to one of claims 1 and 2, characterized in that each housing (4) of the breakthrough (3) is shouldered to define between its shoulder (5) and its mouth (6) in said breakthrough a first cavity (4A) used to receive the blade (7B) constituting the elastic stop member and providing beyond said shoulder (5) a second cavity (4B) receiving the head as a socket (7A) of said blade kept fixed inside said cavity (4B).
4. Dispositif selon la revendication 3, caractérisé en ce que la première cavité (4A) du logement (4) est de section supérieure à la section de la lame (7B) pour permettre un libre déplacement de ladite lame (7B) à l'intérieur de la cavité (4A).4. Device according to claim 3, characterized in that the first cavity (4A) of the housing (4) is of section greater than the section of the blade (7B) to allow free movement of said blade (7B) to the inside the cavity (4A).
5. Dispositif selon la revendication 3, caractérisé en ce que la tête (7A) de ladite lame est encastrée à l'intérieur de la seconde cavité (4B).5. Device according to claim 3, characterized in that the head (7A) of said blade is embedded inside the second cavity (4B).
6. Dispositif selon la revendication 3, caractérisé en ce que la tête (7A) de ladite lame est creuse pour permettre, lors de son introduction dans la seconde cavité, sa déformation de manière à faciliter son introduction à force dans ladite seconde cavité (4B).6. Device according to claim 3, characterized in that the head (7A) of said blade is hollow to allow, during its introduction into the second cavity, its deformation so as to facilitate its forced introduction into said second cavity (4B ).
7. Dispositif selon la revendication 6, caractérisé en ce que la tête (7A) de la lame affecte une forme de cuvette sensiblement tronc-pyramidale.7. Device according to claim 6, characterized in that the head (7A) of the blade has a substantially truncated-pyramidal bowl shape.
8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que la tête (7A) de lame et la lame (7B) sont venues de moulage et formées d'une seule pièce.8. Device according to one of claims 1 to 7, characterized in that the blade head (7A) and the blade (7B) came from molding and formed in one piece.
9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que ledit organe de butée élastique est réversible de manière à faire varier la distance entre la surface de séparation (2) de la matrice (1) et la surface d'appui de la lame (7B) sur le morceau prédécoupé (11). 9. Device according to one of claims 1 to 8, characterized in that said elastic stop member is reversible so as to vary the distance between the separation surface (2) of the matrix (1) and the surface of support of the blade (7B) on the pre-cut piece (11).
EP97906215A 1996-02-22 1997-02-18 Device for removing separated portions Expired - Lifetime EP0886565B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9602187A FR2745220B1 (en) 1996-02-22 1996-02-22 DEVICE FOR ELIMINATING SEPARATE PIECES
FR9602187 1996-02-22
PCT/FR1997/000298 WO1997030829A1 (en) 1996-02-22 1997-02-18 Device for removing separated portions

Publications (2)

Publication Number Publication Date
EP0886565A1 true EP0886565A1 (en) 1998-12-30
EP0886565B1 EP0886565B1 (en) 2000-01-26

Family

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EP97906215A Expired - Lifetime EP0886565B1 (en) 1996-02-22 1997-02-18 Device for removing separated portions

Country Status (7)

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US (1) US6102268A (en)
EP (1) EP0886565B1 (en)
AT (1) ATE189152T1 (en)
DE (1) DE69701218T2 (en)
ES (1) ES2142664T3 (en)
FR (1) FR2745220B1 (en)
WO (1) WO1997030829A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19837316A1 (en) * 1998-04-02 1999-10-07 Franz Vossen Device for removing broken parts from material sheets
DE29825182U1 (en) * 1998-04-02 2005-12-22 Vossen, Franz Device for removing broken parts from material sheets
EP1266727A1 (en) * 2001-06-13 2002-12-18 Aprisys S.A. Dynamic waste-stripping device for a machine for cutting sheet materials
FR2873612B1 (en) * 2004-07-29 2009-10-30 Jean Pierre Caloini DEVICE FOR THE 100% EJECTION OF CARDBOARD CUTTING WASTE ON SELF-PLATINUM PRESS
FR2880576B1 (en) * 2005-01-07 2007-02-23 Raveleau Yvon DEVICE FOR REMOVING PREDECUTED PIECES FROM A SHEET OF MATERIAL
US8061247B2 (en) * 2006-09-15 2011-11-22 Atlas Die Llc Lifting device for stripping and blanking operations
DE202010006741U1 (en) 2010-05-12 2011-09-07 Franz Vossen Counterholder device for a device for removing Ausbrechteilen from a workpiece sheet or the like. and device with a counter-holder device
CN203236811U (en) * 2012-12-24 2013-10-16 鸿准精密模具（昆山）有限公司 Stripping device
JP2014233800A (en) * 2013-06-03 2014-12-15 株式会社 小池製作所 Punching chip removal promotion tool and stripping device having the same
US8789449B1 (en) * 2013-11-07 2014-07-29 Hirofumi Saito Piercing apparatus with scrap removing capability
DE102015110972A1 (en) 2015-07-07 2017-01-12 Franz Vossen Counterpart device for a device for removing break-away parts and device for removing break-away parts
FR3044248B1 (en) * 2015-11-26 2018-04-13 Nicolas Raveleau DEVICE, STACKING DEVICE AND ASSEMBLY COMPRISING SUCH A DEVICE FOR REMOVING PREDECUTED PIECES
DE102017105508A1 (en) * 2016-12-19 2018-06-21 Boxplan Gmbh & Co. Kg Method and device for breaking out a flat workpiece from a sheet of material

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Publication number Priority date Publication date Assignee Title
DE59104008D1 (en) * 1990-03-12 1995-02-09 Meurer Nonfood Product Gmbh Device for removing broken parts from a sheet of material or the like.
DE4124098C2 (en) * 1991-07-19 1997-07-17 Marbach Gmbh Karl Device for removing stripped parts, such as pieces of waste, from a sheet of material containing blanks or the like

Non-Patent Citations (1)

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Title
See references of WO9730829A1 *

Also Published As

Publication number Publication date
WO1997030829A1 (en) 1997-08-28
FR2745220A1 (en) 1997-08-29
US6102268A (en) 2000-08-15
ES2142664T3 (en) 2000-04-16
ATE189152T1 (en) 2000-02-15
DE69701218T2 (en) 2000-09-07
EP0886565B1 (en) 2000-01-26
DE69701218D1 (en) 2000-03-02
FR2745220B1 (en) 1998-04-30

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