EP0265632A2 - Procédé de fabrication d'une pièce en contreplaqué présentant des découpes et l'outil de poinçonnage pour sa mise en oeuvre - Google Patents
Procédé de fabrication d'une pièce en contreplaqué présentant des découpes et l'outil de poinçonnage pour sa mise en oeuvre Download PDFInfo
- Publication number
- EP0265632A2 EP0265632A2 EP19870112760 EP87112760A EP0265632A2 EP 0265632 A2 EP0265632 A2 EP 0265632A2 EP 19870112760 EP19870112760 EP 19870112760 EP 87112760 A EP87112760 A EP 87112760A EP 0265632 A2 EP0265632 A2 EP 0265632A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- veneer
- tool
- cutout
- cover
- workpiece
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/04—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by punching out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
- B27D1/083—Presses specially designed for making the manufacture of shaped plywood articles
-
- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1054—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing and simultaneously bonding [e.g., cut-seaming]
-
- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1062—Prior to assembly
- Y10T156/107—Punching and bonding pressure application by punch
-
- 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
- Y10T83/00—Cutting
- Y10T83/929—Tool or tool with support
- Y10T83/9411—Cutting couple type
- Y10T83/9416—To punch and cut punched article
Definitions
- the invention relates to a method for producing a veneer workpiece in the form of a flat plate or the like with a base layer, preferably consisting at least partially of wood, optionally layered as a base veneer from a plurality of individual layers, a cover veneer having at least one cover veneer layer made of wood, and a base layer and the cover veneer penetrating cutout, in which the base layer and the cover veneer are preferably glued to one another using synthetic resin adhesive, the cutout (s) penetrating the base layer and the cover veneer and finally the peripheral wall (s) thereof is / are covered with cover veneer material.
- the invention is therefore based on the object of providing a method and a press punching tool of the generic type in which the amount of work is considerably less than previously, the procedure is inexpensive and the aesthetic appearance of the veneer workpiece produced is flawless.
- this object is achieved in a method of the generic type in that the gluing of the base layer and the cover veneer to a solid workpiece, the formation of the cutout (s) and the cladding of the peripheral wall of the same with the cover veneer in a single press stamping operation take place, the covering veneer layer is pressed from the surface of the veneer workpiece into the cutout (s) while cladding the peripheral wall of the same up to the cutting edge defining the transition of the peripheral wall with the opposite surface of the veneer workpiece.
- the press stamping process is carried out at a temperature of about 140 ° C.
- phenolic resin film is used to glue the veneer layers.
- the invention proposes in the particular embodiment of the claimed method that synthetic resin glue is used to glue the veneer layers.
- the press punching tool proposed according to the invention for carrying out the claimed method is characterized by a punching tool which is provided with at least one cutting edge with an associated displacement surface and an associated shaping surface for producing cutouts, and an essentially flat counter-tool in the form of an essentially flat plate.
- the punching tool and / or the counter tool is / are designed to be heatable.
- the counter tool as the lower tool is arranged substantially horizontally in a stationary manner and the punching tool as the upper tool is designed such that it can be moved relative to it.
- a further embodiment of the press punching tool according to the invention is characterized by at least one spacing surface provided on the punching tool to prevent the cutting edge (s) of the punching tool from coming into contact with the surface of the counter tool.
- the punch has a shaped edge near the outer edge of the veneer workpiece to be produced.
- the shaped edge in the press punching tool according to the invention is preferably rounded.
- a further embodiment of the invention proposes a press stamping tool, which is characterized in that the distance of the molding edge from the surface of the counter tool in the closed state of the press stamping tool is greater than the distance of the cutting edge (s) from the surface.
- veneer workpieces with cutouts the peripheral wall of which is veneered
- the invention in which the gluing of the workpiece from individual layers and the cutting of the cutout with the subsequent veneers of the peripheral wall of the cutout takes place in a single press-stamping process. Instead of the seven operations that were necessary in the previous procedure, only a single press stamping operation is required.
- the method according to the invention offers numerous advantages: the method according to the invention is simple to carry out, since only a single operation is required; the lead time through the production is therefore very short; in a single operation, a cleanly manufactured veneer workpiece is delivered, which does not require rework; the procedure according to the invention is material-saving, since no cover veneer strips are required as edge veneers and also no glue required to glue the same; the method according to the invention is extremely labor-saving in that it replaces the seven operations required in the prior art by a single combined press-stamping operation, already carried out; the veneer workpiece according to the invention is inexpensive to manufacture, since the effort for wage and ancillary wage costs is low; the method according to the invention saves investment and space by only occupies a workstation with a hydraulic press for the press punching tool; and finally, the insertion of fastening parts can be integrated into the press stamping operation, for example on the flat back of the veneer workpiece facing the counter-tool, for example according to the teaching of DE-GM 78 23 688.
- the underside of the veneer workpiece to be produced is always flat by being pressed onto the surface of the lower tool, so that the veneer workpiece can be glued on without further preparatory work, for example milling a support surface.
- face milling as has been necessary up to now, the veneer workpieces can also warp slightly because the counter veneers are partially destroyed and unilateral tensile forces can occur.
- the press punching according to the invention and the pulling in of the cover veneer down to the cut-out edges succeed the easier the larger the radius of curvature of the peripheral wall of the cut-out, since the elasticity of the wood from which the cover veneer is made is proportionate both lengthways and transversely to the grain of the wood is low.
- the need to achieve the sharpest possible cut edges because round cut edges can cover parts of any tables, scales, etc. to be framed, can be largely met, since the method according to the invention enables the technically flawless production of sharp cut edges very economically, which makes the aesthetic Requirements for cutouts in surfaces can be met to a far greater extent than is the case with the prior art.
- a stamping tool 12 shown there designed as the upper tool of the press stamping tool forming the device according to the invention, has a conical jacket-shaped displacement surface on its lower surface in FIG. 1, facing a counter tool 14 shown in FIG 16 which, on its side facing the counter tool 14, ends in a cutting edge 18 which is circular in the exemplary embodiment shown.
- a curved shaped surface 20 bent into a four-part circle, rises to a pressing surface 22, which runs essentially parallel to the surface of the genetic tool 14.
- an evasive surface 24 set back with respect to the pressing surface 22 can be seen.
- FIG. 2 also shows that the surface 26 of the counter tool 14 facing the punching tool 12 is flat.
- FIG. 1 shows a shaped edge 28 with rounded surfaces, which does not come into contact with the surface 26 of the punch 14 when the punch 12 and counter tool 14 move together, so that the drawing of veneer material in the direction is not hindered on the cutout to be produced.
- the punching tool 12 has a number of cutting edges 18, etc. for producing several cutouts. Furthermore, Fig. 3 shows that the punch 12 is provided with a spacer 30, which comes into contact with the surface 26 of the punch 14 when the punch 12 and counter tool 14 move together and prevents the cutting edges 18 of the punch 12 from contacting the surface 26 of the counter tool 14 come into contact and could be damaged as a result, the distance between the cutting edges 18 and the surface 26 of the counter-tool 14 being only a few hundredths of a millimeter when the spacing surface 30 abuts the surface 26.
- Fig. 4 finally shows how base veneer layers 32 and a dashed veneer layer 34 of the veneer tool are deformed when the punching tool 12 and counter-tool 14 move together, the veneer layer 34 covering the entire circumferential wall of the cutout and up to that Gengentechnikmaschine 14 facing flat rear surface of the veneer workpiece to be produced extends.
- the device described above works as follows when carrying out the method according to the invention for producing the veneer workpiece according to the invention:
- the upper tool ie the punching tool 12
- the upper tool is used for shaping and cutting and has the cutting and squeezing edges in the form of the cutting edges 18 for the removal of the waste piece filling the cutout and the displacement of the material at the cutting edges.
- the punching tool 12 also has the shaped edge 28 on its outer edge in the manner described, by means of which a rounded outer edge can also be formed there if necessary.
- the shaped edge 28 does not, however, extend to the surface 26 of the counter-tool 14 in the closed state of the press-punching tool and also has no sharp cut surfaces on its side facing the surface 26, rather the shaped edge 28 is rounded so that the top veneer layer 34 of the Veneer workpiece that occurs when molding in the direction of the cutting edges 18 Tensile stress is not a hindrance.
- the distance surface 30 to the surface 26 of the counter-tool 14 has such a distance that the cutting edges 18 of the punch 12 come within a few hundredths of a millimeter of the surface 26 of the counter-tool 14 when the press punch tool is closed, ensures that the cutting edges 18 Cut the material of the veneer layers 32 and 34, which form the cutout waste, to such an extent that the piece of waste, which in the state still consists of loose veneer sheets, falls out and a sharp boundary edge is created on the inner edge of the cutout produced.
- Both parts of the press stamping tool that is to say both the stamping tool 12 and the counter tool 14, are heated, the heating temperature being in the range of approximately 140 ° C. in the preferred method of working with a phenolic resin glue film.
- the phenolic resin changes into a liquid phase, as a result of which the slidability of the individual layers required when shaping and warping the top veneer layer 34 and partly the base veneer layers 32 is achieved.
- the required pressure which is sufficient for the bonding of the individual layers, the cutting pressure and the displacement pressures that are required at the cutting edge of the cutout, is preferably approximately 8 to 10 kp / cm2.
- the method according to the invention represents a combined gluing and press stamping process.
- the procedure is as follows: Since the workpiece consists of individual layers of veneer, as first the layering from the base veneer layers 32 and the top veneer layer 34 is gathered and placed on the surface 26 of the counter tool 14. The press punching process is then initiated in that the upper punch tool 12 approaches the lower counter tool 14. As it goes down, the cutting edge 18 detaches the piece of waste from the cutout and presses the edges of the workpiece to be shaped down with the shaped surfaces 20 and the displacement surfaces 16. This begins the displacement process against the workpiece material at the cut edges of the workpiece, which increases the further the cutting edges 18 of the punching tool 12 approach the surface 16, serving as a support surface, of the lower counter tool 14.
- the deformation and displacement pressure on the cut-out edges is accompanied by a tensile effect on the wood surface of the top veneer layer 34 and partly also on the adjacent layers of the base veneer layers 32 and pulls these, which have become slidable due to the dissolved phenolic resin in the phenolic resin film, to the lower boundary edge of the Cutout down so that the cover veneer layer 34 pressed down by the deformation pressure forms a sharp, hard boundary edge on the surface facing the surface 26 of the counter tool 14, which does not require any further processing, for example by milling.
- the tensile effect is sufficient to pull the cover veneer layer 34 down to the lower boundary edge of the cutout facing the surface 26 and thus completely cover the peripheral wall of the cutout, including the shape or limit edge, with the cover veneer.
- cut-out edges with a larger radius of curvature and with a smaller radius of curvature are possible.
- the underside can be pressed out flat, so that the veneer workpiece can be glued on without a special operation.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
- Manufacture Of Wood Veneers (AREA)
- Laminated Bodies (AREA)
- Electroplating Methods And Accessories (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863636587 DE3636587A1 (de) | 1986-10-28 | 1986-10-28 | Verfahren zum herstellen eines furnierwerkstueckes mit ausschnitt sowie pressstanzwerkzeug zu seiner durchfuehrung |
DE3636587 | 1986-10-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0265632A2 true EP0265632A2 (fr) | 1988-05-04 |
EP0265632A3 EP0265632A3 (en) | 1990-04-11 |
EP0265632B1 EP0265632B1 (fr) | 1994-01-12 |
Family
ID=6312607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870112760 Expired - Lifetime EP0265632B1 (fr) | 1986-10-28 | 1987-09-02 | Procédé de fabrication d'une pièce en contreplaqué présentant des découpes et l'outil de poinçonnage pour sa mise en oeuvre |
Country Status (6)
Country | Link |
---|---|
US (1) | US4793393A (fr) |
EP (1) | EP0265632B1 (fr) |
CA (1) | CA1289442C (fr) |
DE (2) | DE3636587A1 (fr) |
ES (1) | ES2048728T3 (fr) |
MX (1) | MX160133A (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0325690B1 (fr) * | 1988-01-27 | 1994-03-23 | EMPE-WERKE ERNST PELZ GmbH & CO. KG | Procédé de fabrication d'une pièce en contre-plaqué avec placage en bois et l'outil de poinçonnage pour sa mise en oeuvre et produit ainsi obtenu |
DE4002039A1 (de) * | 1990-01-24 | 1991-07-25 | Pelz Ernst Erpe Vertrieb | Verfahren zum materialabhebenden bearbeiten von holzwerkstuecken sowie danach hergestelltes holzwerkstueck |
US5277953A (en) * | 1991-11-11 | 1994-01-11 | Sotaro Tsuda | Laminated veneer lumber and decorative laminated sheet utilizing the same |
US5662760A (en) * | 1991-11-11 | 1997-09-02 | Tsuda; Sotaro | Method of manufacturing laminated veneer lumber and decorative laminated sheet utilizing the same |
GB9218148D0 (en) * | 1992-08-26 | 1992-10-14 | Automotive Fascia Systems Limi | A method of producing veneer-faced moulded items |
DE10124912C1 (de) * | 2001-05-17 | 2002-12-05 | Achim Moeller | Verfahren zur Herstellung eines dreidimensional verformten Körpers |
US6820784B2 (en) * | 2001-12-21 | 2004-11-23 | Eastman Kodak Company | Method of cutting a laminated web and reducing delamination |
US20060053989A1 (en) * | 2004-09-14 | 2006-03-16 | International Business Machines Corporation | Self-contained cassette material cutter and method of cutting |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1876330A (en) * | 1932-01-29 | 1932-09-06 | Emil C Loetscher | Method of molding table tops and the like |
US2321740A (en) * | 1939-06-15 | 1943-06-15 | Arthur W Flint | Article and a method of mounting characters of wood, or the like, on a background of wood, or similar materials |
DE931436C (de) * | 1952-09-05 | 1955-08-08 | Ernst Steinbrenner | Verfahren zum Herstellen von Tapetenleisten aus zwei oder mehr Furnierlagen |
DE2833578A1 (de) * | 1978-07-31 | 1980-02-14 | Ernst Pelz | Kombiniertes press- und stanzwerkzeug |
EP0061505A1 (fr) * | 1981-03-26 | 1982-10-06 | Carl Freudenberg Firma | Procédé pour la fabrication d'une semelle intérieure à coussins |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE49632C (de) * | H. DOSTERSCHILL in Berlin NW., Lübeckerstr. 51. | Schnittverfahren zur Herstellung verzierter und fournirter Reliefplatten | ||
FR340237A (fr) * | 1904-02-06 | 1904-06-29 | Firme D Schneegass & Soehne | Procédé et dispositif pour découper et estamper simultanément à froid des objets polis en bois |
DE833699C (de) * | 1949-05-14 | 1952-03-10 | Paul Harder | Verfahren zur Herstellung einer furnierten Platte mit mindestens einer Woelbung und nach dem Verfahren hergestellte furnierte Platte |
US3287195A (en) * | 1961-11-17 | 1966-11-22 | Continental Can Co | Method of pressure welding thermoplastic film |
US3713944A (en) * | 1970-05-28 | 1973-01-30 | Essex International Inc | A method of manufacture of printed circuits by die stamping |
US3990142A (en) * | 1973-10-02 | 1976-11-09 | Jerobee Industries, Inc. | Circuit board, method of making the circuit board and improved die for making said board |
US4320572A (en) * | 1980-03-19 | 1982-03-23 | Gte Products Corporation | Die-stamped circuit board assembly having relief means-method of making |
-
1986
- 1986-10-28 DE DE19863636587 patent/DE3636587A1/de active Granted
-
1987
- 1987-09-02 EP EP19870112760 patent/EP0265632B1/fr not_active Expired - Lifetime
- 1987-09-02 ES ES87112760T patent/ES2048728T3/es not_active Expired - Lifetime
- 1987-09-02 DE DE87112760T patent/DE3788775D1/de not_active Expired - Fee Related
- 1987-10-14 US US07/108,017 patent/US4793393A/en not_active Expired - Fee Related
- 1987-10-22 CA CA 550013 patent/CA1289442C/fr not_active Expired - Fee Related
- 1987-10-26 MX MX8972A patent/MX160133A/es unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1876330A (en) * | 1932-01-29 | 1932-09-06 | Emil C Loetscher | Method of molding table tops and the like |
US2321740A (en) * | 1939-06-15 | 1943-06-15 | Arthur W Flint | Article and a method of mounting characters of wood, or the like, on a background of wood, or similar materials |
DE931436C (de) * | 1952-09-05 | 1955-08-08 | Ernst Steinbrenner | Verfahren zum Herstellen von Tapetenleisten aus zwei oder mehr Furnierlagen |
DE2833578A1 (de) * | 1978-07-31 | 1980-02-14 | Ernst Pelz | Kombiniertes press- und stanzwerkzeug |
EP0061505A1 (fr) * | 1981-03-26 | 1982-10-06 | Carl Freudenberg Firma | Procédé pour la fabrication d'une semelle intérieure à coussins |
Also Published As
Publication number | Publication date |
---|---|
MX160133A (es) | 1989-12-06 |
DE3636587C2 (fr) | 1989-01-19 |
DE3788775D1 (de) | 1994-02-24 |
ES2048728T3 (es) | 1994-04-01 |
DE3636587A1 (de) | 1988-05-11 |
EP0265632A3 (en) | 1990-04-11 |
EP0265632B1 (fr) | 1994-01-12 |
CA1289442C (fr) | 1991-09-24 |
US4793393A (en) | 1988-12-27 |
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