EP0796157B1 - Procede et dispositif permettant de deformer un materiau en plaque - Google Patents

Procede et dispositif permettant de deformer un materiau en plaque Download PDF

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Publication number
EP0796157B1
EP0796157B1 EP95928036A EP95928036A EP0796157B1 EP 0796157 B1 EP0796157 B1 EP 0796157B1 EP 95928036 A EP95928036 A EP 95928036A EP 95928036 A EP95928036 A EP 95928036A EP 0796157 B1 EP0796157 B1 EP 0796157B1
Authority
EP
European Patent Office
Prior art keywords
sweeping
plate
plate material
supporting surface
sweeping member
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.)
Expired - Lifetime
Application number
EP95928036A
Other languages
German (de)
English (en)
Other versions
EP0796157A1 (fr
Inventor
Petrus Wilhelmus Franciscus Maria Broeders
Jans Oving
Rudolf Johannes Gerardes Antonius Van Der Hoorn
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.)
Wemo Nederland BV
Original Assignee
Wemo Nederland BV
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
Priority claimed from NL9401365A external-priority patent/NL9401365A/nl
Application filed by Wemo Nederland BV filed Critical Wemo Nederland BV
Publication of EP0796157A1 publication Critical patent/EP0796157A1/fr
Application granted granted Critical
Publication of EP0796157B1 publication Critical patent/EP0796157B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/10—Stamping using yieldable or resilient pads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/20—Bending sheet metal, not otherwise provided for

Definitions

  • the present invention relates to a device for the deformation of plate material according to the preamble of claim 1.
  • Such device is known from British patent specification no. GB-A-833 370.
  • This known device has limited applicability, in that it is capable only of producing cylinders, or cylinder sections, having constant diameter, or being of elliptical or other non-circular cross-section.
  • Each time plate material to be worked has to be provided with a different shape, one or more components of the device have to be replaced, and adjustments have to be made, in particular with respect to the depth of impression of the sweeping member in the supporting surface of resilient material.
  • the object of the invention is to provide an improved device for the deformation of plate material, which is more flexible, and which is able to produce workpieces of different shapes without constantly having to change components each time the plate material to be worked has to be provided with another shape.
  • a device for the deformation of plate material comprising a supporting surface of resilient material for supporting a plate of the plate material to be worked, and a sweeping member for pressing the plate of the plate material to be worked in the supporting surface of resilient material, and for following a path over the plate material while maintaining pressure on the plate material, characterized by:
  • the device according to the invention it is possible to continously vary the depth of impression of the sweeping member in the supporting surface of resilient material, whilst at the same time the sweeping member follows a path over the plate material to be worked, thereby enabling the device according to the invention to produce workpieces having a great variety of shapes.
  • Fig. 1 shows the principle of the method.
  • a table 1 which table is represented diagrammatically, a plate 2 of the plate material to be worked, made, for example, from aluminium.
  • the supporting leaf 3 of the table 1 is provided on the side upon which the plate material 2 rests with a layer 4 of a resilient material of predetermined thickness.
  • the layer of resilient material 4 can be fixedly connected to the supporting leaf 3 but can likewise by means of an appropriate connection be detachably applied to the supporting leaf 3.
  • a sweeping member 5 - which in this basic example is elongated and extends perpendicularly to the surface of the figure - is subsequently pressed with means (not represented) appropriate to this purpose, with the plate 2 to be worked, over a certain distance, the depth of impression, into the resilient layer 4.
  • the sweeping member 5 is slid substantially parallel to the supporting leaf 3 over the plate 2 in the direction of the arrow P1, the resilient layer 4 being continuously impressed.
  • reaction forces are induced in the zone of impression of the resilient layer 4, which reaction forces are directed towards the sweeping member 5 and deform the plate material 2 close to the zone of impression of the resilient layer 4.
  • Fig. 2 illustrates in graphical representation the relationship between the impression (in mm) of the layer 4 of resilient material and the obtained radius R. It is evident from this array of graphs that, in the case of one type of plate 2 to be worked, the resulting radius R, apart from the extent of impression of the resilient layer 4, is likewise dependent upon the thickness of the resilient layer 4 and the hardness of the material of the resilient layer 4. It is evident from the graphical drawing that where the impression value is fixed, in one type of plate material the radius R which results after the working operation will increase as the thickness of the resilient layer 4 is increased, but also as the hardness of this layer 4 is reduced.
  • Fig. 3 now shows an embodiment of a device according to the invention having two sweeping members, which, in this illustrative embodiment, are likewise elongated and with which, either simultaneously or not, two sweeping motions are able to be performed, and which embodiment is especially suitable for the (in relation to an axis extending parallel to the sweeping members) symmetrical deformation of the plate material.
  • the bending device 6 comprises a table 7 which is composed of two table parts 7a and 7b respectively, which can be swung aside about hinge points 8a and 8b.
  • the device 6 is provided moreover with two sweeping arms 9a and 9b, which can be operated independently of each other and which, in a manner to be described later, are driven by one or more motors (here indicated diagrammatically by reference numeral 13).
  • this bending device 6 Before a plate 2 to be worked can be laid upon the resilient layer 10a, 10b of the table parts 7a and 7b respectively, the table parts have to be brought into a position in which the resilient layers 10a and 10b respectively lie at least substantially in one plane. This can be realized using the - likewise controllable - hydraulic cylinders 11a and 11b respectively, which are connected to the table parts 7a, 7b. In addition, the sweeping arms 9a and 9b have to be brought into such a position that there is sufficient space to lay a plate to be worked on the table 7.
  • the plate 2 can now be removed or subjected to subsequent working.
  • the device according to the invention can continue the working operation as follows:
  • the sweeping arms 9a and 9b are returned to a starting position, free from the worked plate 2, whilst the plate continues constantly to be held in place by the pressure bars 12a and 12b. Subsequently the supporting surface, i.e. the table parts 7a and 7b, is removed by means of the cylinders 11a and 11b from beneath the worked plate 2 by being swivelled away.
  • the plate 2 is provided with a V-shaped profile.
  • the worked plate has a symmetrical profile which is curved in relation to the V, presupposing that the same impression in the plate 2 has previously been made by the two sweeping arms 9a and 9b.
  • the bending device 6 is of the stand-alone type, i.e. where it does not form part of a series of successive automatic machine-working appliances, then in principle, after the sweeping arms 9a and 9b have been returned to a starting position, free from the worked plate 2, the latter can subsequently be manually removed and replaced by a plate which is newly to be worked.
  • a grab member 23 which is represented diagrammatically in Fig. 3, can grip the plate 2 and the said plate, once the sweeping arms 9a and 9b have been pulled back and the fixation by the pressure bars 12a and 12b has been lifted, is able to be taken up and introduced to a following machine-working appliance.
  • Fig. 4 represents diagrammatically a possible embodiment of the control system of the sweeping arms, this figure illustrating, for the sake of simplicity, only the left half of the sweeping device shown in Figure 3.
  • the bending device 6 shown in Fig. 4 comprises, for the driving of the sweeping arm 9a and for the pressing of the sweeping point 14 over a certain distance, the depth of impression, into the resilient layer 10a, two motors 15 and 16 respectively, which can be commanded independently from each other.
  • the motor 15 is hingingly connected at a point 18, by means of a spindle 17 or the like, to a stand 20, which is tiltable about a hinge point 19. If the motor 15 is driven such that, via the spindle 17, the tiltable stand 20 is moved from the table part 7a, then, provided the motor 16 is not being driven, the sweeping arm 9a will likewise perform a tilting motion, the sweeping point 14 rotating about the point 19 and detaching itself from the plate 2.
  • the driving of the motor 16 drives a spindle 21, which is connected to the sweeping arm 9a and causes the latter to pivot, when the motor 15 is not being driven, at the point 22 where the sweeping arm 9a is connected to the tiltable stand 20.
  • a spindle 21 which is connected to the sweeping arm 9a and causes the latter to pivot, when the motor 15 is not being driven, at the point 22 where the sweeping arm 9a is connected to the tiltable stand 20.
  • the sweeping arm 9a By driving the motors 15 and 16 simultaneously, the sweeping arm 9a, once this has been placed with its sweeping point 14 on the plate 2, can be swept over the plate 2.
  • the vertical position of a sweeping point 14 in relation to the plate 2 and hence also the depth of impression in the plate 2 is particularly defined, whilst following the predetermined path of the sweeping point, by the motor 16.
  • the control of the two motors 15, 16 should preferably be programmed. Any changes to the composition or thickness of a plate 2, after having being introduced to the control unit (not represented and not specified here in any greater detail), can be processed in a programmed manner, whereafter such plates are also able to be provided with the desired profile.
  • FIG. 5 shows a different favourable embodiment of the device according to the invention.
  • This device 24 is similar to that of Fig. 3 and those components which conform to the components from the device 6 of Fig. 3 have one and the same reference numeral.
  • the device 24 is arranged moreover such that, during a sweeping operation by the sweeping arms 9a and 9b, the surface of a plate 2 to be worked is protected against damage such as scratches and the like by virtue of the plate 2 being covered during sweeping with a foil 25, preferably made from a strong plastic material.
  • the device 24 is provided with supply rollers 26 holding the foil 25 of a width which is at least as large as the longitudinal dimension of the elongated sweeping point.
  • the foil is led via a conducting member 27, such as a roller, about the sweeping point 14 towards a collecting member 28, which collects foil 25 which has been used once.
  • a conducting member 27 such as a roller
  • the foil 25 is arrested by the supply roller 26 and the foil is unrolled under tension from the collecting member 28, so that the foil 25 slides underneath the sweeping point 14 but does not move over the plate surface, which once again reduces the occurrence of scratches.
  • the supply roller 26 is unrolled to some extent so that, in the following working operation, the foil surface which has previously been swept with the sweeping point 14 is not swept again in full.
  • the extent of unrolling i.e. the number of times which a foil surface can be swept, is primarily determined by the strength of the foil 25.
  • a device 24 of this type is particularly favourable in the machine-working of high-gloss plate material, as is used in fluorescent-light fittings.
  • plate material which was already lined with a protective foil, which then, following the working operation, was able to be removed with great difficulty, this giving rise to a considerable expense.
  • this action may be omitted, thereby producing a saving in both time and cost.
  • Fig. 6 shows part of an embodiment, which embodiment is to some extent altered, those components conforming to the components from Fig. 1 having the same reference numerals.
  • Fig. 6 shows the situation in which a spring-steel foil 29 is fitted between the plate 2 to be worked and the layer 4 of resilient material.
  • the spring-steel foil 29 is preferably laminated in structure and not bonded to the layer 4 of spring material.
  • the thickness of the foil 29 should be matched to the material to be bent and measures, for example, between 0.05 and 0.7 mm.
  • the sweeping body can be, for example, an elongated, substantially rectangular body, having a margin which is rounded to some extent towards the plate 2 to be worked.
  • the sweeping body can also be constructed as an elongated roller body of small radius, whilst deformation operations according to the present invention can also be executed, furthermore, with non-elongated sweeping bodies.
  • the sweeping motion is performed by the sweeping arms/blades in relation to an immovable plate
  • the reverse is likewise possible in principle, namely a fixed arrangement of one or more sweeping bodies with a sweeping table which is mobile in relation thereto and on which the plate to be worked is fastened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Advancing Webs (AREA)
  • Forging (AREA)

Claims (17)

  1. Dispositif pour la déformation de matériau en plaque comprenant une surface de support (4 ; 10a, 10b) en matériau élastique pour supporter une plaque (2) du matériau en plaque à usiner, et un élément de balayage (5 ; 9a, 9b, 14) pour presser la plaque (2) du matériau en plaque à usiner dans la surface de support (4 ; 10a, 10b) en matériau élastique, et pour suivre un trajet sur le matériau en plaque tout en maintenant la pression sur le matériau en plaque, caractérisé par:
    une table de balayage (1 ; 7), qui est conçue de manière à supporter le matériau en plaque (2) à usiner, et qui est pourvue de la surface de support (4 ; 10a, 10b) en matériau élastique ;
    l'élément de balayage (5 ; 9a, 9b, 14) comprenant un corps de balayage allongé (5 ; 14) ;
    des moyens de déplacement (13, 15, 16, 17, 21) pour déplacer l'élément de balayage (5 ; 9a, 9b, 14) et la table de balayage (1 ; 7) en relation l'un avec l'autre de sorte que le trajet qui doit être suivi par le corps de balayage allongé (5 ; 14) sur le matériau en plaque (2) s'étende sensiblement en alignement transversal par rapport à la dimension longitudinale du corps de balayage (5 ; 14) ; et
    des moyens de contrôle pour commander les moyens de déplacement (13, 15, 16, 17, 21) et pour ajuster la profondeur d'impression à réaliser avec un élément de balayage (5 ; 9a, 9b, 14), par l'intermédiaire du matériau en plaque (2) à usiner, dans la surface de support élastique (4; 10a, 10b).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'élément de balayage (5 ; 9a, 9b, 14) comprend un corps de balayage en forme de lame (5 ; 14) comportant un bord arrondi s'étendant sensiblement parallèle à la surface de support (4; 10a, 10b) et orienté vers le matériau en plaue (2) à usiner.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'élément de balayage (5 ; 9a, 9b, 14) comprend un corps de rouleau.
  4. Dispositif selon l'une ou plusieurs des revendications 1 à 3, caractérisé par un élément de protection de surface de plaque (25) qui est présent entre le côté du matériau en plaque (2) orienté à l'opposé de la surface de support (4 ; 10a, 10b) et l'élément de balayage (5 ; 9a, 9b, 14).
  5. Dispositif selon la revendication 4, caractérisé en ce que l'élément de protection de surface de plaque est une feuille (25) qui provient d'un support d'alimentation (26), est amenée le long de l'élément de balayage (5 ; 9a, 9b, 14) et est guidée vers un élément de collecte (28).
  6. Dispositif selon l'une ou plusieurs des revendications 1 à 5, caractérisé en ce qu'une feuille d'acier à ressort (29) est appliquée à la surface de support (4 ; 10a, 10b).
  7. Dispositif selon l'une ou plusieurs des revendications 1 à 6, caractérisé en ce que les moyens de contrôle, sur la base d'un ou de plusieurs éléments de données d'entrée, ajustent ou font varier la profondeur d'impression.
  8. Machine de déformation de matériau en plaque, caractérisée par une combinaison d'au moins deux dispositifs selon l'une ou plusieurs des revendications 1 à 7.
  9. Machine de déformation de matériau en plaque comprenant deux dispositifs selon l'une ou plusieurs des revendications 1 à 7, lesquels dispositifs sont symétriques l'un par rapport à l'autre et sont montés côte à côte.
  10. Procédé pour la déformation de matériau en plaque utilisant le dispositif selon la revendication 9, comprenant les étapes consistant à :
    placer une plaque (2) du matériau en plaque contre la surface de support (4 ; 10a, 10b) en matériau élastique ;
    appliquer l'élément de balayage (5 ; 9a, 9b, 14) contre le côté du matériau en plaque (2) orienté à l'opposé de la surface de support (4 ; 10a, 10b) ;
    presser l'élément de balayage (5 ; 9a, 9b, 14) et le matériau en plaque (2) situé entre l'élément de balayage (5 ; 9a, 9b, 14) et la surface de support (4 ; 10a, 10b) à une profondeur prédéfinie d'impression dans la surface de support (4 10a, 10b) ;
    suivre un trajet sur le matériau en plaque (2), sensiblement parallèle à la surface de support (4 ; 10a, 10b), ladite surface de support étant imprimée par l'élément de balayage (5 ; 9a, 9b, 14) ; et
    enlever le matériau en plaque (2) de la surface de support (4 ; 10a, 10b), dans lequel,
    une table de balayage (1 ; 7), qui est conçue de manière à supporter le matériau en plaque (2) à usiner et qui est pourvue de la surface de support (4 ; 10a, 10b) en matériau élastique, fournit un cadre constant de référence pour ledit matériau en plaque e. l'élément de balayage (5 ; 9a, 9b, 14), et
    tout en suivant un trajet sur le matériau en plaque (2) avec l'élément de balayage (5 ; 9a, 9b, 14), la profondeur d'impression dans la surface de support (4 ; 10a, 10b) peut être modifiée conformément à une configuration prédéterminée.
  11. Procédé selon la revendication 10, caractérisé en ce que la configuration prédéterminée de la profondeur d'impression est définie d'une manière programmée.
  12. Procédé selon la revendication 10 ou 11, caractérisé en ce qu'un élément de protection de surface (25) est présent entre l'élément de balayage (5 ; 9a, 9b, 14) et le côté du matériau en plaque (2) orienté à l'opposé de la surface de support (4; 10a, 10b).
  13. Procédé selon la revendication 12, caractérisé en ce que l'élément de protection de surface est une feuille (25).
  14. Procédé selon l'une ou plusieurs des revendications 10 à 13, caractérisé en ce qu'une feuille en acier à ressort (29) est placée entre le matériau en plaque (2) et la surface de support (4 ; 10a, 10b).
  15. Procédé selon la revendication 14, caractérisé en ce que la feuille (29) est de structure laminée.
  16. Procédé selon l'une ou plusieurs des revendications 14 à 15, caractérisé en ce que l'épaisseur de la feuille (29) est comprise entre 0,05 mm et 0,7 mm.
  17. Procédé selon l'une ou plusieurs des revendications 10 à 16, caractérisé en ce que, alors qu'un trajet est suivi sur le matériau en plaque (2) par l'élément de balayage (5 ; 9a, 9b, 14), la profondeur d'impression dans la surface de support (4 ; 10a, 10b) est modifiée conformément à une configuration prédéterminée.
EP95928036A 1994-08-23 1995-08-18 Procede et dispositif permettant de deformer un materiau en plaque Expired - Lifetime EP0796157B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
NL9401365A NL9401365A (nl) 1994-08-23 1994-08-23 Werkwijze en inrichting voor het vervormen van plaatmateriaal.
NL9401365 1994-08-23
NL9500114A NL9500114A (nl) 1994-08-23 1995-01-23 Werkwijze en inrichting voor het vervormen van plaatmateriaal.
NL9500114 1995-01-23
PCT/NL1995/000275 WO1996005922A1 (fr) 1994-08-23 1995-08-18 Procede et dispositif permettant de deformer un materiau en plaque

Publications (2)

Publication Number Publication Date
EP0796157A1 EP0796157A1 (fr) 1997-09-24
EP0796157B1 true EP0796157B1 (fr) 2001-11-14

Family

ID=26647248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95928036A Expired - Lifetime EP0796157B1 (fr) 1994-08-23 1995-08-18 Procede et dispositif permettant de deformer un materiau en plaque

Country Status (9)

Country Link
EP (1) EP0796157B1 (fr)
AT (1) ATE208665T1 (fr)
AU (1) AU3193895A (fr)
DE (1) DE69523941T2 (fr)
DK (1) DK0796157T3 (fr)
ES (1) ES2163523T3 (fr)
NL (1) NL9500114A (fr)
PT (1) PT796157E (fr)
WO (1) WO1996005922A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100426544B1 (ko) * 2000-12-08 2004-04-13 바이오코아 주식회사 혈청 또는 혈장으로부터 바이러스의 핵산을 추출하는 방법및 그 방법에 사용되는 핵산 추출용 조성물

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB833370A (en) * 1956-12-21 1960-04-21 Solar Aircraft Co Improvements in or relating to sheet material bending apparatus
US4257251A (en) * 1978-03-30 1981-03-24 Flight Furniture Pty. Ltd. Metal forming process
US4514998A (en) * 1982-03-09 1985-05-07 Jury Harold R Metal forming machine
FR2584956A1 (fr) * 1985-07-22 1987-01-23 Courbis Technologies Bloc matrice notamment pour le travail des metaux en feuille
AT393363B (de) * 1989-12-13 1991-10-10 Gass Helmut Vorrichtung zur herstellung von fuellkoerpern sowie vorteilhafte verwendung derselben

Also Published As

Publication number Publication date
DE69523941D1 (de) 2001-12-20
WO1996005922A1 (fr) 1996-02-29
EP0796157A1 (fr) 1997-09-24
DK0796157T3 (da) 2002-03-18
ATE208665T1 (de) 2001-11-15
ES2163523T3 (es) 2002-02-01
AU3193895A (en) 1996-03-14
NL9500114A (nl) 1996-04-01
PT796157E (pt) 2002-02-28
DE69523941T2 (de) 2002-04-11

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