DE19748407B4 - Punching device for shaping a thermoplastic workpiece - Google Patents
Punching device for shaping a thermoplastic workpiece Download PDFInfo
- Publication number
- DE19748407B4 DE19748407B4 DE1997148407 DE19748407A DE19748407B4 DE 19748407 B4 DE19748407 B4 DE 19748407B4 DE 1997148407 DE1997148407 DE 1997148407 DE 19748407 A DE19748407 A DE 19748407A DE 19748407 B4 DE19748407 B4 DE 19748407B4
- Authority
- DE
- Germany
- Prior art keywords
- workpiece
- punching
- profile
- shaping
- cut surface
- 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 - Fee Related
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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/32—Moulds having cutting means
-
- 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
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0009—Cutting out
- B29C2793/0018—Cutting out for making a hole
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
- B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Details Of Cutting Devices (AREA)
Abstract
Stanzvorrichtung zur Formgebung eines Werkstücks aus einem Material mit thermoplastischen Eigenschaften, enthaltend ein Stanzmesser und Mittel zur Erzeugung von Relativbewegungen zwischen diesem und dem mittels eines Niederhalters gehaltenen Werkstück, dadurch gekennzeichnet, dass dem Stanzmesser (4) auf seiner der Schnittfläche (8) am Werkstück (1) zugekehrten Seite ein einem gewünschten Kantenprofil der Schnittfläche (8) entsprechendes Kehlenprofil (10) mit einer dort eingearbeiteten Heizvorrichtung (13) solcher Auslegung zugeordnet ist, dass im wesentlichen nach dem Stanzvorgang das gewünschte Kantenprofil des Werkstücks (1) durch örtliches Warmpressen desselben entsteht.punching device for shaping a workpiece of a material having thermoplastic properties, containing a punching knife and means for generating relative movements between this and the workpiece held by means of a hold-down, characterized characterized in that the punching knife (4) on its the cut surface (8) on the workpiece (1) facing side of a desired edge profile of the cut surface (8) corresponding gutter profile (10) with an incorporated there Heater (13) is associated with such design that substantially after punching the desired Edge profile of the workpiece (1) by local Hot pressing of the same arises.
Description
Die Erfindung betrifft eine Stanzvorrichtung gemäß dem Oberbegriff des Patentanspruchs 1.The The invention relates to a punching device according to the preamble of the claim 1.
Unter „Formgebung" soll im Rahmen der Erfindung sowohl ein äußeres Beschneiden eines Werkstücks, d.h. das Erzielen einer nach außen weisenden Stanzkante, als auch das Ausstanzen eines inneren Bereichs des Werkstücks, d.h. die Erzielung einer nach innen weisenden Stanzkante, verstanden sein. Bevorzugter Einsatzfall der Erfindung ist die Formgebung eines flächigen Teils aus einem thermoplastischen Material, wie es beispielsweise in Gestalt einer Stoßfängerabdeckung bei Automobilen vorliegt.Under "shaping" is in the context of Invention both an external pruning a workpiece, i.e. achieving an outward pointing punching edge, as well as the punching out of an inner area of the workpiece, i.e. the achievement of an inwardly facing punching edge to be understood. The preferred application of the invention is the shaping of a flat part from a thermoplastic material, such as in the form of a bumper cover is present in automobiles.
Die
Der Erfindung liegt ein anderes Problem zugrunde: Nach dem Stanzvorgang bilden im Querschnitt durch die Werkstücke die Stanzränder mit der anschließenden Werkstückoberfläche scharfe winklige Kanten, die Schwierigkeiten beispielsweise dann machen, wenn die Werkstücke, wie in der Automobiltechnik üblich, nachträglich lackiert werden sollen. An den scharfen Kanten kommt es zu einer Lackansammlung und infolgedessen zu einem Abplatzen des Lacks, und zwar gegebenenfalls in einem solchen Ausmaß, daß der optische Eindruck darunter leidet. Aber auch dann, wenn eine derartige nachträgliche Lackierung nicht vorgesehen ist, kann das Entstehen derartiger scharfer Kanten durch den Stanzvorgang unerwünscht sein, beispielsweise dann, wenn die Gefahr des Abbröckelns von Material des Werkstücks besteht.Of the Invention is based on another problem: After the punching process form in cross section through the workpieces with the punch edges the subsequent Workpiece surface sharp angled edges that make trouble then, for example if the workpieces, as usual in the automotive industry, later to be painted. At the sharp edges, it comes to a Paint accumulation and as a result to a flaking of the varnish, and although possibly to such an extent that the visual impression suffers. But even if such a subsequent coating not provided is the emergence of such sharp edges by the punching process undesirable be, for example, if the risk of crumbling of Material of the workpiece consists.
Die ältere Anmeldung
Zum
einen ist eine relativ große
Heizenergie erforderlich, da die Heizvorrichtung relativ weit von
dem Kehlenprofil entfernt ist. Zum anderen befindet sich die Heizvorrichtung
an einem Ort, der üblicherweise
zur Unterbringung von Mitteln zur Befestigung des Stempels an einer
Haltevorrichtung erforderlich ist, die mit einem Antrieb zur Erzeugung
der Schnittbewegungen versehen ist.The older registration
On the one hand, a relatively large heating energy is required because the heater is relatively far away from the throat profile. On the other hand, the heating device is in a location that is usually required to accommodate means for attaching the punch to a holding device, which is provided with a drive for generating the cutting movements.
Aus
der
Der Erfindung liegt die Aufgabe zugrunde, eine Stanzvorrichtung zu schaffen, die mit minimalem Energieaufwand und ohne Beeinträchtigung des Stanzvorgangs in Folge Aufheizung der Kantenbereiche des Werkstücks die definierten scharfkantigen Übergänge zwischen den Stanz- oder Schnittflächen einerseits und den anschließenden Oberflächen der Werkstücke andererseits zu vermeiden gestattet.Of the Invention has for its object to provide a punching device, with minimal energy consumption and without impairment the punching process in sequence heating the edge portions of the workpiece the defined sharp-edged transitions between the punching or cutting surfaces on the one hand and the subsequent surfaces the workpieces on the other hand to avoid allowed.
Die erfindungsgemäße Lösung der Aufgabe wird durch die Merkmalen des Hauptanspruch erreicht vorteilhafte Ausbildungen der Erfindung beschreiben die Unteransprüche.The inventive solution of Task is achieved by the features of the main claim advantageous Embodiments of the invention describe the dependent claims.
Die Erfindung wird im folgenden anhand des figürlich dargestellten Ausführungsbeispiels für eine entsprechende Stanzvorrichtung beschrieben.The Invention will be described below with reference to the embodiment shown in FIG for a corresponding Punching device described.
Bei
Ohne
die erfindungsgemäßen Maßnahmen, d.h.
bei reiner Zylinderform der Außenfläche
Um
diesen Nachteil zu vermeiden, läuft
die Außenfläche
Bei
Verständlicherweise
muß bei
der Wahl des Profils der Kehle
Mit der Erfindung ist demgemäß eine gattungsgemäße Stanzvorrichtung geschaffen, die ohne zusätzlichen Arbeitsgang selbsttätig im wesentlichen nach Beendigung des Stanzvorgangs eine örtliche Formgebung des Werkstücks durch Warmpressen sicherstellt.With The invention accordingly is a generic punching device created without additional Operation automatically essentially after completion of the punching a local shaping of the workpiece ensured by hot pressing.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997148407 DE19748407B4 (en) | 1997-11-03 | 1997-11-03 | Punching device for shaping a thermoplastic workpiece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997148407 DE19748407B4 (en) | 1997-11-03 | 1997-11-03 | Punching device for shaping a thermoplastic workpiece |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19748407A1 DE19748407A1 (en) | 1999-05-06 |
DE19748407B4 true DE19748407B4 (en) | 2006-04-06 |
Family
ID=7847385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1997148407 Expired - Fee Related DE19748407B4 (en) | 1997-11-03 | 1997-11-03 | Punching device for shaping a thermoplastic workpiece |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19748407B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202008015770U1 (en) | 2008-11-27 | 2009-02-26 | Karl Reichardt, Stanzmesserfabrik Gmbh | Punching device and heating plate for it |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10032458A1 (en) * | 2000-07-04 | 2002-07-25 | Rehau Ag & Co | Punching tool for producing openings in workpieces made of thermoplastic material |
DE20114860U1 (en) * | 2001-09-07 | 2002-01-10 | Sonotronic Nagel Gmbh | Device for making an opening in a workpiece |
DE102004004194B4 (en) * | 2004-01-27 | 2008-07-10 | Peguform Gmbh | Apparatus and method for cutting and chamfering a bore |
PL1702733T3 (en) * | 2005-03-18 | 2018-06-29 | Plastic Omnium Automotive Exteriors Gmbh | Formpunching of plastics with high-precision |
DE102005048295A1 (en) * | 2005-10-08 | 2007-04-12 | Rehau Ag + Co. | Making an opening in a coated plastic workpiece comprises heating the workpiece, stamping out and edge shaping a preliminary opening, stamping out the final opening, and cooling the workpiece |
DE102016111741A1 (en) | 2016-06-27 | 2017-12-28 | Jenoptik Automatisierungstechnik Gmbh | Method for producing a cladding component made of plastic with at least one opening for receiving an attachment and such a cladding component |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2735797A (en) * | 1956-02-21 | Method of heat sealing and severing | ||
DE2027373A1 (en) * | 1970-06-04 | 1971-12-16 | Dohmeier & Strothotte Kg | Perforating plastic film - by localised melting in the areas - of the required holes |
DE2052575A1 (en) * | 1970-10-27 | 1972-05-04 | Kurz Hessental Kg K | Heat cutting openings in plastic hollow bodies - esp cutting rounds out of plastic beer barrels |
DD122492A5 (en) * | 1974-12-31 | 1976-10-12 | ||
DE2630700A1 (en) * | 1976-07-08 | 1978-01-12 | Klaus Luebnitz | Edge trimming knives for thermoplastic floor covering moulds - melt and cut away edges projecting from mould joints |
EP0220799A2 (en) * | 1985-10-28 | 1987-05-06 | Shell Oil Company | Method of making a rolled lip container |
DE3615419A1 (en) * | 1986-05-07 | 1987-11-12 | Wienaeber Schweisstechnik Ohg | Method and device for punching thermoplastic material or the like |
EP0493062A1 (en) * | 1990-12-21 | 1992-07-01 | Bridgestone Corporation | Method and apparatus for cutting and shaping elongate thermoplastically deformable material |
DE4221180A1 (en) * | 1992-07-01 | 1994-01-05 | Stribel Gmbh | Method and device for producing optical elements |
JPH071399A (en) * | 1993-06-11 | 1995-01-06 | Yokohama Rubber Co Ltd:The | Cutting method for belt-like member and device thereof |
JPH071400A (en) * | 1993-06-11 | 1995-01-06 | Yokohama Rubber Co Ltd:The | Cutting method for belt-like member and device thereof |
DE19730859A1 (en) * | 1997-07-17 | 1999-01-21 | Magna Pebra Gmbh | Cutting tool and method for punching thermoplastic workpieces |
-
1997
- 1997-11-03 DE DE1997148407 patent/DE19748407B4/en not_active Expired - Fee Related
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2735797A (en) * | 1956-02-21 | Method of heat sealing and severing | ||
DE2027373A1 (en) * | 1970-06-04 | 1971-12-16 | Dohmeier & Strothotte Kg | Perforating plastic film - by localised melting in the areas - of the required holes |
DE2052575A1 (en) * | 1970-10-27 | 1972-05-04 | Kurz Hessental Kg K | Heat cutting openings in plastic hollow bodies - esp cutting rounds out of plastic beer barrels |
DD122492A5 (en) * | 1974-12-31 | 1976-10-12 | ||
DE2630700A1 (en) * | 1976-07-08 | 1978-01-12 | Klaus Luebnitz | Edge trimming knives for thermoplastic floor covering moulds - melt and cut away edges projecting from mould joints |
DE2630700B2 (en) * | 1976-07-08 | 1980-07-31 | Klaus 3180 Wolfsburg Luebnitz | Device on a press mold for shaping compacts made of thermoplastic material |
DE2630700C3 (en) * | 1976-07-08 | 1981-04-23 | Lübnitz, Klaus, 3180 Wolfsburg | Device on a press mold for shaping compacts made of thermoplastic material |
EP0220799A2 (en) * | 1985-10-28 | 1987-05-06 | Shell Oil Company | Method of making a rolled lip container |
DE3615419A1 (en) * | 1986-05-07 | 1987-11-12 | Wienaeber Schweisstechnik Ohg | Method and device for punching thermoplastic material or the like |
EP0493062A1 (en) * | 1990-12-21 | 1992-07-01 | Bridgestone Corporation | Method and apparatus for cutting and shaping elongate thermoplastically deformable material |
DE4221180A1 (en) * | 1992-07-01 | 1994-01-05 | Stribel Gmbh | Method and device for producing optical elements |
JPH071399A (en) * | 1993-06-11 | 1995-01-06 | Yokohama Rubber Co Ltd:The | Cutting method for belt-like member and device thereof |
JPH071400A (en) * | 1993-06-11 | 1995-01-06 | Yokohama Rubber Co Ltd:The | Cutting method for belt-like member and device thereof |
DE19730859A1 (en) * | 1997-07-17 | 1999-01-21 | Magna Pebra Gmbh | Cutting tool and method for punching thermoplastic workpieces |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202008015770U1 (en) | 2008-11-27 | 2009-02-26 | Karl Reichardt, Stanzmesserfabrik Gmbh | Punching device and heating plate for it |
Also Published As
Publication number | Publication date |
---|---|
DE19748407A1 (en) | 1999-05-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
8320 | Willingness to grant licenses declared (paragraph 23) | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |