EP0339060B1 - Outil de moulage par compression pour la fabrication de plaques moulees a couches multiples - Google Patents

Outil de moulage par compression pour la fabrication de plaques moulees a couches multiples Download PDF

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Publication number
EP0339060B1
EP0339060B1 EP88908658A EP88908658A EP0339060B1 EP 0339060 B1 EP0339060 B1 EP 0339060B1 EP 88908658 A EP88908658 A EP 88908658A EP 88908658 A EP88908658 A EP 88908658A EP 0339060 B1 EP0339060 B1 EP 0339060B1
Authority
EP
European Patent Office
Prior art keywords
tool
frame
edge
plate
outer layer
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
EP88908658A
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German (de)
English (en)
Other versions
EP0339060A1 (fr
Inventor
Gerhard Pirchl
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.)
A A W PRODUKTIONS AG
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A A W Produktions AG
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Filing date
Publication date
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Priority to AT88908658T priority Critical patent/ATE71002T1/de
Publication of EP0339060A1 publication Critical patent/EP0339060A1/fr
Application granted granted Critical
Publication of EP0339060B1 publication Critical patent/EP0339060B1/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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • 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
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5146—Common reciprocating support for spaced tools
    • 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
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5147—Plural diverse manufacturing apparatus including means for metal shaping or assembling including composite tool
    • Y10T29/5148—Plural diverse manufacturing apparatus including means for metal shaping or assembling including composite tool including severing means
    • 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
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5191—Assembly
    • 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
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • 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
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53787—Binding or covering

Definitions

  • the invention relates to a pressing tool for the production of multilayer mold plates with at least two outer layers, consisting of a lower tool part, an upper tool part, guide columns and a coupling device for the press drive, the lower tool part being a die with a mold cavity corresponding to the mold plate, and the upper tool part being a press die that matches the mold cavity has and a method for operating such a pressing tool.
  • Pressing tools of this type are generally known and are used, for example, in the field of sheet metal processing, in particular the automotive industry.
  • the fabrics formed with these tools can include flat, curved, or any combination of flat and curved surfaces.
  • Multi-layer mold plates which consist for example of two outer layers of sheet metal and an intermediate layer of insulation material, have to be produced with several tools and in several work steps. It is known to produce such multilayer mold plates by cutting a metal sheet, a cover film and the intermediate layer of insulation material in each case in separate work steps in a flat surface to the desired external shape. These blanks are placed in the desired cavity in the mold cavity of a press tool and pressed into the desired shape.
  • the invention has for its object to provide a pressing tool with which the layers of the mold plate are formed, if necessary the edge regions of the outer layers are trimmed, and with the same tool the edge region of an outer layer is placed around the edge region of the other outer layer and the edge regions are pressed together can.
  • the tool is intended to enable the production of multilayer mold plates without manual rework, and to be able to be produced in a simple and inexpensive manner.
  • the border of the mold cavity is formed by side walls with two regions with different inclinations to the mold surface of the mold cavity, the first side wall region directly abutting the mold surface approximately at a right angle this mold surface, and the second upper side wall area diverges outwards
  • the upper part of the tool has a displaceable frame arranged coaxially around the press ram
  • a coupling device is arranged between this frame and the press ram
  • spring-elastic elements having a free end are fastened to the lower surface of the frame , and the free ends of these resilient elements cooperate with the second diverging side wall region of the mold cavity.
  • the two side wall regions of the mold cavity run parallel to the curvature of the edge line of the mold surface, and the free ends of the spring-elastic elements form a line running parallel to the second upper side wall region.
  • the lower tool part has a cut plate arranged around the mold cavity, a cut stamp is arranged around the press stamp on the upper tool part, and the frame with the spring-elastic elements is between the press stamp and the cutting stamp.
  • a preferred embodiment of the invention is characterized in that the cutting plate and cutting punch are formed in the region of the cutting line from a multiplicity of individual cylindrical cutting elements with a polygonal cross section, and a cutting element of the cutting plate and the cutting punch each form a pair with mutually directed cutting edges.
  • the resilient elements are arranged on the cutting elements of the die, and the frame and die form a structural unit.
  • Another preferred embodiment of the invention is characterized in that the frame is connected to springs and these springs press the frame against the upper tool part.
  • the opening path of the Frame limited by stops, at the top dead center of the press die, the free ends of the resilient elements protrude above the end face of the press die, and in this position the coupling device connects the frame to the press die.
  • the resilient elements consist of a plurality of rod-shaped strips arranged next to one another.
  • the resilient elements are made of metal or plastic.
  • the material for the resilient elements their elasticity and their properties are to be matched to the material and the strength of the outer layer of the mold plate to be folded.
  • the outer layer to be folded consists of an aluminum foil, spring-elastic elements made of plastic arranged close to one another are particularly suitable.
  • the spring-elastic elements are expediently formed from spring steel.
  • other resilient materials can also be used.
  • An advantageous method for operating the press tool according to the invention for multilayer mold plates is that the individual layers of the mold plate are inserted between the upper tool part and the lower tool part and then the mold plate is formed by pressing the two tool parts together, and is characterized in that at the same time the mold is being molded Plate the overlapping edge of an outer layer is at least partially placed around the edge of the second outer layer, the tool is fully opened again and the frame is firmly connected to the press ram by means of the coupling device, then the two tool parts are moved together again and the elastic elements on the divergent areas of the Side walls of the mold cavity inwards deflected, and the edge of the first outer layer is completely laid around the edge of the second outer layer by the elastic elements, then the tool is opened again and the frame is uncoupled from the press ram.
  • the method is characterized in that the edge of the first outer layer is trimmed in the same work step before the end of the plate molding process.
  • the pressing tool is closed again after the edge of the first outer layer has been completely folded over, and the molding plate and its edge are completely pressed.
  • the advantages that can be achieved with the invention are, in particular, that multilayer mold plates remain in the same tool after the individual layers have been inserted into the pressing tool until they have been completely processed and manufactured, and that all the necessary work steps can be carried out with this tool.
  • the mold plates have good dimensional stability and a good clamping connection of the edge regions of the outer layers.
  • thicker sheet metal can also be used and folded as outer layers due to the high possible tool forces.
  • the multi-layer mold plates can be produced much faster and more cost-effectively than with the previously known methods and tools. When using a large number of individual cutting elements to produce the cutting edges, very complex external shapes can also be produced in a simple and cost-effective manner.
  • these individual cutting elements are arranged in a simple manner along the desired outer contour of the molding plate and connected to the cutting plate or the cutting punch by casting, gluing or other known connecting methods. With this arrangement, no expensive and complicated cutting rings are necessary. This leads to a further cost advantage.
  • the pressing tool according to FIG. 1 consists of a lower tool part 2 and an upper tool part 3, which are connected to one another via a plurality of guide columns 4.
  • the guide columns 4 are anchored in the lower tool part, and the upper tool part 3 can be displaced in the direction of the longitudinal axes of the guide columns 4.
  • 3 guide bushes 21, which surround the guide columns 4 are fastened in the upper part of the tool.
  • the upper tool part 3 is further connected to coupling and movement devices, not shown, for the press drive and has further known devices, also not shown, for limiting the stop and holding aids.
  • the overall construction of the tool can be derived in a known manner from the partial section shown in FIG. 1, in that the size of the tool depends on the dimensions is dependent on the mold plate 1, and the section shown in Figure 1 extends through the edge region around the circumference of the entire tool.
  • the multilayer molded plate 1 shown in FIG. 1 is a heat insulation plate for covering exhaust pipe parts in internal combustion engines.
  • the molding plate 1 is composed of a first outer layer 8, which consists of an aluminum sheet, a mat 10 made of insulation material, and a second outer layer 9 made of a thin aluminum foil.
  • the insulation material mat 10 is smaller in the edge area than the two outer layers 8 and 9, the outer layer 8 made of aluminum sheet being smaller than the outer dimensions of the outer layer 9 made of aluminum foil in the example shown.
  • the two outer layers 8 and 9 are pressed against one another in the outer region, and the edge region of the outer layer 9 is folded or folded around the edge region of the outer layer 8.
  • the strength of the outer layer 9 consisting of an aluminum foil is chosen so that the fold of the outer region results in a perfect connection of the individual layers of the mold plate 1 and the outer layer 9 also retains the curvatures of the mold plate 1 after the shaping.
  • the lower tool part 2 has a die 5 in which there is a mold cavity 7.
  • a press ram 6 is arranged on the upper tool part 3, which has an end face 32 shaped corresponding to the mold cavity 7.
  • the spatial dimensions of the mold cavity 7 are defined by the mold surface 11, which determines the spatial shape of the mold plate 1, and the border consisting of side wall regions 12, 13.
  • the side wall region 12 directly abuts the edge line 31 of the molding surface 11 and is arranged approximately at right angles to the molding surface 11.
  • the height of this side wall area 12 corresponds to the thickness of the folded edge region of the two outer layers 8 and 9.
  • a second side wall region 13 adjoins the first side wall region 12, which is inclined outwards and forms a diverging opening of the mold cavity 7.
  • the side wall area 13 has an inclination of 45 ° to the axis of movement of the tool upper part 3.
  • the two side wall areas 12 and 13 run parallel to the edge line 31 of the mold surface 11.
  • the outer layer 9 is drawn over the inclined side wall area 13 and at the end of the pressing process between the first vertical side wall region 12 and the wall surface 33 of the press ram 6. Press ram 6 and mold cavity 7 are arranged with corresponding play to one another.
  • a frame 14 is arranged around the press ram 6, which frame is displaceable relative to the upper tool part 3 and for this purpose is slidably mounted on the guide columns 4 via the guide bushes 21, 22.
  • Spring-elastic elements 16 are fastened to the lower surface 28 of this frame 14 in the region of the wall surface 33 of the press ram 6. These resilient elements 16 form a multiplicity of rod-shaped strips arranged closely next to one another with free ends 17. The free ends 17 of the resilient elements 16 form a line running parallel to the second upper side wall region 13 of the mold cavity 7.
  • a spring 20 presses the frame 14 against the upper tool part 3 and ensures that the spring-elastic elements 16 do not interact with the die 5 during the pressing process.
  • a coupling device 15 enables the positive connection of the frame 14 to the tool upper part 3 in certain work steps.
  • the coupling device 15 consists of a known piston-cylinder unit 24 with pressure medium feeds and control elements, not shown.
  • a coupling pin 25 is guided in a bearing bush 27 of the frame 14 and is in the starting position during the pressing process.
  • a coupling bore 26 is arranged in the lower region, which has the same dimensions as the coupling pin 25 of the coupling device 15.
  • FIG. 2 the tool according to FIG. 1 is shown in the open position after the molding plate 1 has been pressed.
  • the upper tool part 3 is located at the top dead center. Above the upper tool part 3 there is a counter plate 23 in which stops 19 are fastened. Passages 30 for the stops 19 are arranged in the upper part 3 of the tool.
  • the upper surface 29 of the frame 14 is pressed against the stop 19 by the spring 20.
  • the stop 19 and the top dead center position of the upper tool part 3 are matched to one another such that the axis of the coupling pin 25 coincides with the axis of the coupling bore 26.
  • the piston-cylinder unit 24 is actuated and the coupling pin 25 is inserted into the coupling bore 26.
  • the frame 14 is positively connected to the upper tool part 3 and now follows every movement of the upper tool part 3.
  • the upper tool part is now moved again against the lower tool part until the free ends 17 of the spring-elastic elements 16 strike the second side wall region 13 of the mold cavity 7.
  • the free ends 17 are deflected against the raised edge area of the outer layer 9 of the molding plate 1 and place this raised edge area over the edge area of the outer layer 8.
  • This movement process is continued until the lower surface 28 of the frame 14 hits the stop 18 and thereby the folding process is completed.
  • This end position of the spring-elastic elements 16 is shown in FIG. 3, the stop 18 not being shown in FIG. 3, but also being present.
  • the upper tool part 3 is now pulled back to the top dead center, the piston-cylinder unit 24 actuated again, and the coupling pin 25 out of the coupling bore 26 extended and returned to its starting position.
  • the upper tool part 3 is closed again and the mold plate 1 is completely pressed.
  • FIG. 3 shows the schematic arrangement of the edge areas of a pressing tool, with which the outer layer of the molding plate 1 to be folded is trimmed in the same working method.
  • a cutting plate 34 with a cutting edge 41 is arranged around the die 5 with the mold cavity 7.
  • a cutting punch 35 is fastened to the upper tool part 3 and has a second cutting edge 42.
  • cutting plate 34 and cutting punch 35 are arranged in a ring around die 5 or cutting punch 6.
  • the frame 36, to which the spring-elastic elements 16 are fastened, is located between the cutting punch 35 and the pressing punch 6.
  • At the top of the frame stops 37 with springs 38 are arranged, with this arrangement the springs 38 pulling the frame 36 against the tool upper part 3 when the coupling device 15 is not engaged.
  • a fixed plate, not shown, with stops which cooperate with the stops 37 is likewise arranged above the upper tool part 3.
  • the upper tool part 3 with the press ram 6 is in the end position after the folding process has ended, the outer layer 9 of the molding plate 1 being completely folded over.
  • the coupling pin 25 is engaged in a coupling bore 40 on the frame 36 and is guided in a bearing bush 39 in the punch 35.
  • the clutch pin 25 is engaged and disengaged again via the piston-cylinder unit 24 and pressure medium supply lines and controls, not shown.
  • the individual layers of the mold plate 1 are inserted into the mold cavity 7 at the start of the working process, the outer layer 9 again consisting of an aluminum foil and its edge protrudes beyond the cutting edge 41.
  • the edge region of the outer layer 9 between the two cutting edges 41, 42 is trimmed by the cutting punch 35 being moved simultaneously with the pressing punch 6 against the lower tool part 2.
  • An elastic support 43 is inserted into the cutting plate 34, which ensures that the pressing die 6 can carry out the pressing movement with the necessary pressing force without this movement being impeded by the cutting die 35.
  • the stops 37 abut against the limit stops, not shown, and hold the frame 36 in a position in which the free ends 17 of the spring-elastic elements 16 protrude beyond the end face 32 of the press die 6.
  • the coupling device 15, or its coupling pin 25, is inserted into the frame 36, or its coupling bore 40. Since the cutting punch 35 is connected to the upper tool part 3 and thus the pressing die 6, a positive connection also results here, and the frame 36 is moved downward with the upper tool part 3 or the pressing die 6.
  • the free ends 17 of the resilient elements 16 abut the second side wall region 13 of the mold cavity 7 and place the edge region of the outer layer 9 around the outer layer 8 and produce an edge fold.
  • stops are also installed here.
  • the frame 14 and the cutting punch 35 which are shown in FIGS. 1 and 3, also form a frame-shaped unit 50.
  • the cutting plate and cutting punch are formed in the region of the cutting line from a multiplicity of cutting elements 44, 45 arranged in a row. These cutting elements 44, 45 have one more angular cross section, in the example shown a hexagonal cross section.
  • the cutting elements 44, 45 have cutting edges 41, 42, which are formed by attaching step-shaped shoulders.
  • the cut edges 41, 42 run from one corner of the hexagonal cross section through the center to the opposite corner of the hexagon.
  • the cutting elements 44, 45 formed in this way are lined up edge to edge, as a result of which curved cutting lines can be formed in a simple manner.
  • the die 5 with the integrated cutting elements 44 and the structural unit 50 are made of plastic.
  • the cutting elements 44, 45 are cast in this plastic and thus form a form-fitting unit.
  • the spring-elastic elements 46 with the free ends 47 are fastened in an integrated manner to the cutting elements 45.
  • the resilient elements 46 can be formed in one piece from the same material.
  • the elements 44, 45 consist of hardened spring steel.
  • the section of the press tool shown in FIG. 4 shows the lower tool part 2 and the upper tool part 3 in the starting position before the start of the pressing process.
  • the multilayer mold plate 1, or its individual layers 8, 9 and 10 are inserted as flat surfaces over the mold cavity 7.
  • the aluminum sheet 8 forms the outer layer which is folded over. This has the advantage that the aluminum foil 9, which forms the second outer layer, is clamped between the aluminum sheet 8 and thereby a very good connection between the outer layers 8 and 9 is created.
  • the exact outer contour of the outer layer 8 required for this type of production is produced by trimming the edge region of the outer layer 8 between the cut edges 41 and 42 of the cutting elements 44 and 45 before the molding process is completed.
  • the tool still has known hold-down devices (not shown) for the outer layer 8.
  • the upper tool part 3 is moved to its top dead center.
  • the upper surface 49 of the assembly 50 abuts the stop 19 and is fixed in a position in which the coupling pin 25 can be inserted into the coupling bore 26 at the top dead center of the upper tool part 3.
  • the free ends 47 of the resilient elements 46 protrude beyond the end face 32 of the press ram 6.
  • the spring-elastic elements 46 are made of spring steel in this embodiment, aluminum sheets can be easily processed.
  • the edge region of the molding plate 1 can be completely pressed in a further operation after the assembly 50 has been disengaged from the upper tool part 3.
  • the method for operating the pressing tools shown in FIGS. 1 to 4 comprises a first working step in that the individual layers of the molding plate are inserted into the opened tool between the lower tool part 2 and the upper tool part 3.
  • all layers are precut to the correct shape.
  • the outer layer which is folded over is trimmed in the tool during the subsequent work process and can therefore have a relatively imprecise outer shape.
  • the upper tool part is moved against the lower tool part 3 and the individual layers 8, 9 and 10 of the mold plate 1 are pressed and shaped into the mold cavity 7 by the press stamp 6.
  • the outer layer 8 or 9 which forms the fold is drawn over the inclined side wall region 12 of the mold cavity 7 and is set up between the side wall region 13 and the wall surface 33 on the press die 6 approximately at right angles to the mold surface 11 of the mold cavity 7.
  • the upper tool part 3 is now moved away from the lower tool part 2 and moved to its top dead center.
  • the coupling device 15 connects the frame 14, 36, 50 to the upper tool part 3 or the press ram 6.
  • the two tool parts 2 and 3 are then moved together again, the resilient elements 16, 46 being deflected at the diverging regions of the mold cavity 7 or the side wall regions 13, and the edge of the first outer layer being completely around the edge by the elastic elements 16, 46 the second outer layer.
  • the molding plate 1 can be completely shaped and folded in the edge region and removed without further processing for use.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Press Drives And Press Lines (AREA)

Claims (12)

1. Outil de pressage pour la fabrication de panneaux moulés multicouches ayant au moins deux couches externes, comprenant une partie inférieure d'outil (2), une partie supérieure d'outil (3), des colonnes de guidage (4), et un dispositif d'accouplement (15) à la commande de presse, la partie inférieure d'outil (2) présentant une matrice (5) pourvue d'une cavité de moulage (7) correspondant au panneau moulé (1) et la partie supérieure d'outil (3) un poinçon de pressage adapté à la cavité de moulage (7), caractérisé en ce que la bordure de la cavité de moulage (7) est formée par des parois latérales présentant deux zones (12, 13) à inclinaisons différentes par rapport à la surface de moule (11) de la cavité de moulage (7), la première zone de paroi latérale (12) qui est directement contiguë à la surface de moule (11) étant approximativement perpendiculaire à cette surface de moule (11), la seconde zone de paroi latérale (13) supérieure divergeant vers l'extérieur, en ce que la partie supérieure d'outil (3) présente un cadre (14, 36, 50), pouvant être coulissé, agencé coaxialement autour du poinçon de pressage (6), un dispositif d'accouplement (15) étant agencé entre ce cadre (14, 36, 50) et le poinçon de pressage (6), en ce que des éléments élastiques (16, 46) comportant une extrémité libre (17, 47) sont fixés à la surface inférieure (28) du cadre (14, 36, 50) et en ce que les extrémités libres (17, 47) de ces éléments élastiques (16, 46) coopèrent avec la deuxième zone de paroi latérale (13) divergeante de la cavité de moulage (7).
2. Outil de pressage suivant la revendication 1, caractérisé en ce que les deux zones de paroi latérale (12, 13) de la cavité de moulage (7) s'étendent parallèlement à la courbure de la ligne de bord (31) de la surface de moule (11) et en ce que les extrémités libres (17, 47) des éléments élastiques (16, 46) forment une ligne qui s'étend parallèlement à la seconde zone de paroi latérale (13) supérieure.
3. Outil de pressage suivant l'une ou l'autre des revendications 1 et 2, caractérisé en ce que la partie inférieure d'outil (2) présente une matrice de découpage (34) agencée autour de la cavité de moulage (7), un poinçon de découpage (35) étant agencé sur la partie supérieure d'outil (3) autour du poinçon de pressage (6), et en ce que le cadre (36) comportant les éléments élastiques (16) est guidé entre le poinçon de pressage (6) et le poinçon de découpage (35).
4. Outil de pressage suivant la revendication 3, caractérisé en ce que la matrice de découpage (34) et le poinçon de découpage (35) sont formés, dans la zone de la ligne de coupe, par un grand nombre d'éléments de coupe (44, 45) individuels de forme cylindrique qui présentent une section transversale à angles multiples, et en ce que chaque fois un élément de coupe (44) de la matrice de découpage (34) et un élément de coupe (45) du poinçon de découpage (35) forment une paire d'arêtes de coupe (41, 42) dirigées l'une vers l'autre.
5. Outil de pressage suivant la revendication 4, caractérisé en ce que les éléments élastiques (46) sont agencés sur les éléments de coupe (45) du poinçon de découpage (35) et en ce que le cadre (14) et le poinçon de découpage (35) forment un ensemble de construction (50).
6. Outil de pressage suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que le cadre (14, 36, 30) est relié à des ressorts (20, 38) et en ce que ces ressorts (20, 38) pressent le cadre (14, 36, 50) contre la partie supérieure d'outil (3).
7. Outil de pressage suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que la course d'ouverture du cadre (14, 36, 50) est limitée par des butées (19, 37), au point mort supérieur du poinçon de pressage (6) les extrémités libres (17, 47) des éléments élastiques (16, 46) faisant saillie au-delà de la surface frontale (32) du poinçon de pressage (6), et en ce que dans cette position le dispositif d'accouplement (15) relie le cadre (14, 16, 30) au poinçon de pressage (6).
8. Outil de pressage suivant l'une quelconque des revendications 1 à 7, caractérisé en ce que les éléments élastiques (16, 46) sont constitués par un grand nombre de bandes en forme de barres qui sont agencées l'une à côté de l'autre.
9. Outil de pressage suivant l'une quelconque des revendications 1 à 8, caractérisé en ce que les éléments élastiques (16, 46) sont réalisés en métal ou en matière synthétique.
10. Procédé de mise en oeuvre d'un outil de pressage pour des panneaux moulés multicouches (1) suivant la revendication 1, dans lequel les couches individuelles du panneau moulé (1) sont insérées entre la partie supérieure d'outil (3) et la partie inférieure d'outil (2) et dans lequel ensuite le panneau (1) est moulé par compression des deux parties d'outil, caractérisé en ce que, simultanément au moulage du panneau, le bord de recouvrement d'une couche externe est rabattu au moins partiellement autour du bord de la seconde couche externe, en ce que l'outil est à nouveau totalement ouvert et le cadre (14, 36, 50) est relié de manière fixe, au moyen du dispositif d'accouplement, au poinçon de pressage, en ce qu'ensuite les deux parties d'outil sont à nouveau ramenées l'une contre l'autre et alors les éléments élastiques (17) sont déviés vers l'intérieur sur les zones divergeantes des parois latérales (13) de la cavité de moulage (7), le bord de la première couche externe étant complètement rabattu par les éléments élastiques (17) autour du bord de la seconde couche externe, et en ce que l'outil est ensuite à nouveau ouvert et le cadre (14, 36, 50) est désaccouplé du poinçon de pressage.
11. Procédé suivant la revendication 10, caractérisé en ce qu'avant la fin du processus de moulage du panneau le bord de la première couche externe est découpé dans la même étape de fabrication.
12. Procédé suivant l'une ou l'autre des revendications 10 et 11, caractérisé en ce qu'après le rabattement complet du bord de la première couche externe, l'outil de pressage est à nouveau fermé et le panneau et son bord sont entièrement pressés.
EP88908658A 1987-10-29 1988-10-11 Outil de moulage par compression pour la fabrication de plaques moulees a couches multiples Expired - Lifetime EP0339060B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88908658T ATE71002T1 (de) 1987-10-29 1988-10-11 Presswerkzeug zur herstellung von mehrschichtigen formplatten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4238/87 1987-10-29
CH423887 1987-10-29

Publications (2)

Publication Number Publication Date
EP0339060A1 EP0339060A1 (fr) 1989-11-02
EP0339060B1 true EP0339060B1 (fr) 1992-01-02

Family

ID=4272382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88908658A Expired - Lifetime EP0339060B1 (fr) 1987-10-29 1988-10-11 Outil de moulage par compression pour la fabrication de plaques moulees a couches multiples

Country Status (8)

Country Link
US (1) US5309622A (fr)
EP (1) EP0339060B1 (fr)
JP (1) JPH02501905A (fr)
AT (1) ATE71002T1 (fr)
DE (1) DE3867463D1 (fr)
ES (1) ES2010833A6 (fr)
PT (1) PT88875B (fr)
WO (1) WO1989003732A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4210691C1 (en) * 1992-04-01 1993-07-22 Benteler Ag, 4790 Paderborn, De Covering exhaust pipes with shell halves - involves press with tools for crimping edges of shell halves
DE4440815A1 (de) * 1994-11-15 1996-05-23 Bayerische Motoren Werke Ag Verfahren zum Herstellen einer Falzverbindung
US5634251A (en) * 1995-05-15 1997-06-03 Kraft; Joseph D. Hemming apparatus and method for creating a hem
US6052887A (en) * 1996-09-16 2000-04-25 Tower Automotive Apparatus and method for joining sheet metal layers
US6848160B1 (en) 2000-10-31 2005-02-01 Thermal Shield Solutions, Llc Method of forming a product in a moving web
WO2013170401A1 (fr) * 2012-05-18 2013-11-21 Cui Xuejun Nouveau procédé de fabrication d'un raccord entourant de composant protecteur isolant thermique
CN109365616B (zh) * 2018-10-19 2024-04-30 昆山仁硕机械制造有限公司 一种切刀机构安装于下模的汽车装饰条冲切模具
DE102020117492B4 (de) 2020-07-02 2022-01-13 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines mehrlagigen Hitzeschilds

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1294486A (en) * 1916-04-07 1919-02-18 Corcoran Victor Company Method of making reflectors.
US1636803A (en) * 1926-10-06 1927-07-26 Brown John Mootry Machine for folding stovepipe blanks
US2041004A (en) * 1933-08-29 1936-05-19 Excel Curtain Company Method of forming frame members with metal veneer facing strips
US2422952A (en) * 1944-09-20 1947-06-24 Guy L Dakin Shaping, punching, and trimming die mechanism
US2576698A (en) * 1948-04-14 1951-11-27 Johns Manville Metal-sheathed insulating blanket and method of manufacture
GB966747A (en) * 1960-05-19 1964-08-12 Cookson Sheet Metal Dev Ltd Improvements in or relating to machines for working sheet metal
DE1250768B (fr) * 1962-09-10 1967-09-21
US3387355A (en) * 1963-04-08 1968-06-11 Container Corp Apparatus for providing a substrate with a liner
US3540116A (en) * 1967-07-07 1970-11-17 Hauserman Co E F Method of making a building panel
US3699626A (en) * 1970-12-16 1972-10-24 Eric Michael Roth Fabric applying apparatus
FR2414373A1 (fr) * 1978-01-13 1979-08-10 Bene Pierre Outil de sertissage
DE3037050A1 (de) * 1980-10-01 1982-05-27 Basf Ag, 6700 Ludwigshafen Verfahren und vorrichtung zum herstellen eines flaechigen profilierten verbundkoerpers

Also Published As

Publication number Publication date
ES2010833A6 (es) 1989-12-01
ATE71002T1 (de) 1992-01-15
PT88875A (pt) 1989-09-14
PT88875B (pt) 1994-01-31
US5309622A (en) 1994-05-10
EP0339060A1 (fr) 1989-11-02
DE3867463D1 (de) 1992-02-13
JPH02501905A (ja) 1990-06-28
WO1989003732A1 (fr) 1989-05-05

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