WO1992014603A1 - Dispositif servant a deformer localement des panneaux en plastique - Google Patents

Dispositif servant a deformer localement des panneaux en plastique Download PDF

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Publication number
WO1992014603A1
WO1992014603A1 PCT/NL1992/000035 NL9200035W WO9214603A1 WO 1992014603 A1 WO1992014603 A1 WO 1992014603A1 NL 9200035 W NL9200035 W NL 9200035W WO 9214603 A1 WO9214603 A1 WO 9214603A1
Authority
WO
WIPO (PCT)
Prior art keywords
press
support beam
press element
panel
press elements
Prior art date
Application number
PCT/NL1992/000035
Other languages
English (en)
Inventor
Gerrit Klein
Original Assignee
Ebm Techniek B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ebm Techniek B.V. filed Critical Ebm Techniek B.V.
Publication of WO1992014603A1 publication Critical patent/WO1992014603A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/04—Bending or folding of plates or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/04—Bending or folding of plates or sheets
    • B29C53/06—Forming folding lines by pressing or scoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0044—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping edges or extremities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/062—Press plates
    • B30B15/064—Press plates with heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/34—Heating or cooling presses or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0053—Moulding articles characterised by the shape of the surface, e.g. ribs, high polish
    • B29C37/0057—Moulding single grooves or ribs, e.g. tear lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2024/00—Articles with hollow walls

Definitions

  • the invention relates to a device for locally' deform ⁇ ing plastic sandwich panels comprising heated press elements movable towards and away from each other, received in press element holders and fixed to support beams, means received between the press element holders and the support beam for insulating against heat transfer between the press elements and the support beam, and means for positioning the panels for processing in the zone between the press elements.
  • Plastic sandwich panels are constructed from so- called skin plates between which a foam is received.
  • the skin plates generally consist of a laminate.
  • the skin plates generally consist of a laminate.
  • This deforming requires a temperature of about 300-340°C.
  • a possible way to prevent warping is to fix the press elements to a rigid, support beam having bending strength. The beam will however heat up at high temperatures, whereby the whole unit will still warp.
  • the present invention has for its object to provide a device and method for deforming plastic sandwich panels wherein the press elements are very straight and have bending strength and also retain these properties.
  • the insulation means are ceramic blocks.
  • the ceramic insulation means prevent leakage of heat away from the press element to the support beam. This therefore retains its shape. Because the press element is fixed to this support beam having bending strength and is itself heated very uniformly, this press element will not warp either. Ceramic blocks received between the beam and the press element holder are preferably used for the insulation because ceramic has good insulation properties and because the blockform prevents a uniform contact between the press element holder and the support beam thereby further preventing heat transfer.
  • the beam is preferably provided with temperature sensors on its top side and underside for determining the difference in temperature between both sides of the beam. The supply of coolant can then be regulated subject to this difference in temperature. When the temperature of the beam is uniform it will not warp, with the result that the press element will also remain straight.
  • the press elements are heated by means of heating means arranged in the press element holder.
  • These heating means can be sub-divided into three different groups in accordance with the position of the heating means.
  • the three groups can be controlled separately by means of a measuring and control circuit. This is important because the holder has three different cooling zones, namely the outer ends, the contact points with the ceramic blocks and the rest of the beam. Each of these zones is therefore separately connected to the measuring and control circuit.
  • the press element itself is of comparatively simple structure and can be replaced in simple manner.
  • the press elements can be employed in any desired form.
  • different types of devices are provided which substantially have in common the overall structure of the press elements together with the press element holders and support beams.
  • An edge finishing machine is for instance possible which carries the skin plates on the edges of a panel towards one another while compressing the foam.
  • the foam portion of the panel in this way becomes inaccessible to, for instance, moisture.
  • a second possible embodiment can be used for arranging folds in the plastic panel.
  • a third embodiment is suitable for providing the panels with a determined shape. Particularly in the case of the latter embodiment there occurs virtually no compression of the foam.
  • fig. 1 shows a partly broken away side view of an embodiment of a device according to the invention
  • fig. 2-4 show a number of press element shapes for use in a number of embodiments of the device according to the invention
  • fig. 5-7 show partly broken away perspective views of a number of products obtained by means of the press elements of fig. 2-4
  • fig. 8 is a perspective view of a part of a device according to the invention
  • fig. 9 is a partly broken away perspective view according to IX in fig. 8
  • fig. 10 is a partly broken away perspective view according to X in fig. 8.
  • Fig. 1 shows a side view of an embodiment of a device 1 according to the present invention.
  • the device 1 contains two deforming members 2 and 3 and two consolidating members 4 and 5. Each member is constructed out of a support beam 6, a press element holder 7 and a press element 8.
  • the press element holder 7 is separated from support beam 6 by means of ceramic blocks 9 for insulation against heat transfer.
  • the support beam 6 is provided with a number of channels 10 for coolant.
  • the pressing members 2, 3, 4 and 5 are movable in vertical direction. The movement takes place either towards or away from each other.
  • the device 1 is also provided with means 11 for positioning a panel 12.
  • the means 11 comprise for instance a plate (not shown) provided with a large number of openings, air being alternately supplied to respectively extracted from these openings.
  • the panel When air is supplied, the panel hovers as it were above the plate and can in this way be placed simply in position. When the correct position is reached, switch-over takes place to vacuum whereby the panel is sucked fast to the plate.
  • the panel is transported into the machine by transporting means (not shown) under the vacuum table 11.
  • the panel is placed by means of positioning means 13 at the correct position between the pressing members 2 and 3. After deformation during heating between the pressing members 2 and 3 the panel 12 is carried between the pressing members 4 and 5 by means of the transporting means.
  • Fig. 2 shows an example of the edge finishing of a plastic sandwich panel.
  • a plastic panel 12 is carried between pressing members 2 and 3.
  • the press element of pressing member 2 has a temperature between 300 and 340°C, while the press element of press element holder 3 has a temperature of about 150°C.
  • the edge of the panel is pressed together by means of the pressing members 2 and 3.
  • the partially deformed panel is subsequently placed between the pressing members 4 and 5.
  • Both press elements have a temperature of approximately 150°C and are used for temporarily holding the panel in the deformed state. After this operation the deformed state is consolidated.
  • the final product is shown in fig. 5.
  • Fig. 3 shows the press elements associated with an embodiment of the device for arranging folds in plastic panels.
  • Press element 14 pre-heats the panel 12 whereafter a fold is made in the plastic panel 12 by means of press ele ⁇ ment 15 at 300-340°C. Press element 15 and press element 14 are then moved away from one another. The positioning means 16 move inward whereby the definitive fold (dashed line) results. The panel is held in the deformed state for a determined time by the positioning means 16 and the deformation is in this way consolidated. Fig. 6 shows the final product.
  • Fig. 4 shows a third embodiment of the device for bringing plastic panels into a determined shape.
  • Moulding part 17 is provided with a profile, while moulding part 18 has a complementary shape.
  • the panel 12 is first pre-heated between heating plates 19 and 20, which correspond with the press elements 2, 3 and 14, 15 respectively. After the desi ⁇ red heating time the product is transported quickly to the unheated moulding parts 17 and 18. The product is deformed between the moulding parts 17 and 18 and then consolidated.
  • Fig. 7 shows the final product.
  • Fig. 8 shows a perspective view of a portion of the device of fig. 1 for finishing panel edges, namely the heat- ing or deforming members.
  • a press element holder 7 is fixed to a support beam 6, which is provided with openings 21, by means of long tensioning rods 22.
  • the tensioning rods 22 are provided on the top of the beam with spring washers 23 for holding the press element holder 7 at a constant tension at different temperatures.
  • Support beam 6 is provided with feed and drain means for coolant 24, 53 respectively.
  • Received in the press element holder 7 is a press element 8.
  • the press element holder 7 is provided with a large number of heating means 26.
  • Fig. 9 shows a partly broken away perspective view according to IX in fig. 8.
  • the press element holder 7 in which the press element 8 is received is provided with a large number of heating means 26.
  • the press element holder 7 is fixed to the support beam 6 by means of long tensioning rods 22. Because the rods 22 have a long length and a small diameter heat leakage from the holder 7 to the support beam 6 is prevented to a significant extent.
  • a number of ceramic blocks are received between support beam 6 and press element holder 7 transversely of the lengthwise direction and with interposing of wedges 27 and 28 in support beam 6. Wedge 27 is displaceable by means of adjusting means 29 whereby the ceramic blocks are height-adjustable.
  • the support beam 6 further has a number of channels 10 for coolant. This is a view of the middle of the press element. By placing the ceramic blocks transversely of the lengthwise direction the beam is fixed at this point.
  • Fig. 10 is a partly broken away perspective view of a portion of the pressing member at another random location.
  • the structure at this location is substantially the same as the structure as shown in fig. 9.
  • a significant difference is however represented by the ceramic blocks 9 which are re- ceived at this point in lengthwise direction between the beam and the press element holder.
  • a number of U-shaped elements 30 provides the fixation of ceramic blocks 9 in lengthwise direction.
  • Pins 31 fixed to the U-shaped elements provide fixation in transverse direction.
  • the press element holder 7 is capable of shifting in lengthwise direction relative to the support beam 6 when the press element holder expands under the influence of heat.
  • the ceramic blocks also shift and the tensioning rods bend due to this expansion. Because holder and beam are not directly connected to one another expansion of the holder will not result in warping of the beam.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

L'invention se rapporte à un dispositif servant à la finition, au pliage ou la déformation de panneaux sandwich en plastique au moyen d'un ou de plusieurs éléments de pression et constitué par une barre de support (6) éventuellement refroidie, à laquelle est fixé un support (7) d'élément de pression pourvu de moyens de réchauffement (26) avec interposition de blocs isolants en céramique (9) et dans lequel vient se loger un élément de pression (8).
PCT/NL1992/000035 1991-02-20 1992-02-19 Dispositif servant a deformer localement des panneaux en plastique WO1992014603A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9100302 1991-02-20
NL9100302A NL9100302A (nl) 1991-02-20 1991-02-20 Inrichting voor het plaatselijk vervormen van kunststof panelen.

Publications (1)

Publication Number Publication Date
WO1992014603A1 true WO1992014603A1 (fr) 1992-09-03

Family

ID=19858912

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1992/000035 WO1992014603A1 (fr) 1991-02-20 1992-02-19 Dispositif servant a deformer localement des panneaux en plastique

Country Status (2)

Country Link
NL (1) NL9100302A (fr)
WO (1) WO1992014603A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0641641A1 (fr) * 1993-09-07 1995-03-08 Airex Sa Procédé pour la déformation du bord d'un matériau sanwich
WO1999024190A1 (fr) * 1997-11-12 1999-05-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procede et dispositif pour commander un processus de formage
EP1038145A1 (fr) * 1997-09-09 2000-09-27 FISHER & PAYKEL LIMITED Armoire de refrigerateur, ses elements, et procedes associes
FR2806950A1 (fr) * 2000-03-31 2001-10-05 Acb Pressure Systems Systeme d'accrochage d'un couvercle d'outillage sur le plateau coulissant d'une presse de formage a chaud
NL1031771C2 (nl) * 2006-05-08 2007-11-09 Fits Holding B V Het koppelen van thermoplastische sandwichpanelen.
EP1923208A1 (fr) * 2006-11-20 2008-05-21 Amada Europe Liaison mécanique pour transfert de forces tout en assurant une isolation

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1943560A1 (de) * 1969-08-27 1971-03-18 Dieffenbacher Gmbh Maschf Heizplattenpresse
US3754499A (en) * 1971-09-27 1973-08-28 North American Rockwell High temperature platens
DE2415178A1 (de) * 1974-03-29 1975-10-09 Frankfurter Aussenhandel Gmbh Waermeschutzplatte
GB1421473A (en) * 1972-11-09 1976-01-21 Joint Francais Thermally insulative structure
US4304178A (en) * 1979-04-28 1981-12-08 Lenser Kunststoff-Presswerk Gmbh & Co. Kg Spacer for interposition between a temperature-controlled plate and a pressure plate of a press
DE3040372A1 (de) * 1980-10-25 1982-08-19 Wagener Schwelm GmbH & Co, 5830 Schwelm Pressenplatte fuer vorrichtungen zur reparatur sowie zum endlosmachen von foerdergurten
AT372901B (de) * 1982-02-23 1983-11-25 Ott Paul Gmbh & Co Kg Heizplatte fuer eine presse, insbesondere hydraulische furnierpresse
EP0154970A2 (fr) * 1984-03-16 1985-09-18 DATACARD-MIDS GmbH Dispositif de laminage pour la fabrication de cartes d'identification

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1943560A1 (de) * 1969-08-27 1971-03-18 Dieffenbacher Gmbh Maschf Heizplattenpresse
US3754499A (en) * 1971-09-27 1973-08-28 North American Rockwell High temperature platens
GB1421473A (en) * 1972-11-09 1976-01-21 Joint Francais Thermally insulative structure
DE2415178A1 (de) * 1974-03-29 1975-10-09 Frankfurter Aussenhandel Gmbh Waermeschutzplatte
US4304178A (en) * 1979-04-28 1981-12-08 Lenser Kunststoff-Presswerk Gmbh & Co. Kg Spacer for interposition between a temperature-controlled plate and a pressure plate of a press
DE3040372A1 (de) * 1980-10-25 1982-08-19 Wagener Schwelm GmbH & Co, 5830 Schwelm Pressenplatte fuer vorrichtungen zur reparatur sowie zum endlosmachen von foerdergurten
AT372901B (de) * 1982-02-23 1983-11-25 Ott Paul Gmbh & Co Kg Heizplatte fuer eine presse, insbesondere hydraulische furnierpresse
EP0154970A2 (fr) * 1984-03-16 1985-09-18 DATACARD-MIDS GmbH Dispositif de laminage pour la fabrication de cartes d'identification

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995007173A1 (fr) * 1993-09-07 1995-03-16 Airex Ag Procede de deformation du bord d'un materiau en sandwich
EP0641641A1 (fr) * 1993-09-07 1995-03-08 Airex Sa Procédé pour la déformation du bord d'un matériau sanwich
EP1038145A4 (fr) * 1997-09-09 2002-04-17 Fisher & Paykel Armoire de refrigerateur, ses elements, et procedes associes
EP1038145A1 (fr) * 1997-09-09 2000-09-27 FISHER & PAYKEL LIMITED Armoire de refrigerateur, ses elements, et procedes associes
WO1999024190A1 (fr) * 1997-11-12 1999-05-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procede et dispositif pour commander un processus de formage
US6553804B2 (en) 2000-03-31 2003-04-29 Acb Pressure Systems Hooking system for a tooling lid onto the sliding plate of a hot forming press
FR2806950A1 (fr) * 2000-03-31 2001-10-05 Acb Pressure Systems Systeme d'accrochage d'un couvercle d'outillage sur le plateau coulissant d'une presse de formage a chaud
ES2196947A1 (es) * 2000-03-31 2003-12-16 Acb Pressure Systems Sistema de enganchado de una tapa de utillaje sobre el plato deslizante de una prensa de conformado en caliente.
NL1031771C2 (nl) * 2006-05-08 2007-11-09 Fits Holding B V Het koppelen van thermoplastische sandwichpanelen.
WO2007129887A1 (fr) * 2006-05-08 2007-11-15 Fits Holding Bv Éléments de construction thermoplastiques et procédés de couplage associés
EP1923208A1 (fr) * 2006-11-20 2008-05-21 Amada Europe Liaison mécanique pour transfert de forces tout en assurant une isolation
FR2908684A1 (fr) * 2006-11-20 2008-05-23 Amada Europ Sa Liaison mecanique pour transfert de forces tout en assurant une isolation
US7536897B2 (en) 2006-11-20 2009-05-26 Amada Europe Mechanical connection for transferring forces while providing insulation

Also Published As

Publication number Publication date
NL9100302A (nl) 1992-09-16

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