DE2053318C3 - Device for bending angular single- and multi-chamber profile bars made of thermoplastics - Google Patents
Device for bending angular single- and multi-chamber profile bars made of thermoplasticsInfo
- Publication number
- DE2053318C3 DE2053318C3 DE2053318A DE2053318A DE2053318C3 DE 2053318 C3 DE2053318 C3 DE 2053318C3 DE 2053318 A DE2053318 A DE 2053318A DE 2053318 A DE2053318 A DE 2053318A DE 2053318 C3 DE2053318 C3 DE 2053318C3
- Authority
- DE
- Germany
- Prior art keywords
- bending
- profile
- profile bars
- template
- thermoplastics
- 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
Links
- 238000005452 bending Methods 0.000 title claims description 25
- 229920001169 thermoplastic Polymers 0.000 title claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 title description 2
- 238000003856 thermoforming Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007688 edging Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 1
- 244000144980 herd Species 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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
- B29C53/08—Bending or folding of tubes or other profiled members
- B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube axis
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/006—Using vacuum
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/001—Profiled members, e.g. beams, sections
- B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section
- B29L2031/005—Profiled members, e.g. beams, sections having a profiled transverse cross-section for making window frames
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Biegen von kantigen Ein- und Mehri.nmmerprofilstäben aus thermoplastischen Kunststoffen, die es ermöglicht, Hohlprofilstäbe ohne bleibende Verformung des Profilquerschnittes zu biegen. Gemäß der Erfindung können insbesondere Profilstäbe mit Nuten oder auskragenden Schenkeln, wie Anschlägen, Überschlägen, Nasen, Stegen oder Lippen, zum Beispiel Fensterprofilstäbe, Einfaßprofilstäbe oder Zargenprofilstäbe gebogen werden.The invention relates to a device for bending angular single and multiple profile rods made of thermoplastics, which makes it possible to produce hollow profile rods without permanent deformation to bend the profile cross-section. According to the invention, in particular profile bars with grooves or protruding legs, such as stops, flaps, noses, webs or lips, for example Window profile rods, edging profile rods or frame profile rods are bent.
Einfache Rohrprofilstäbe von geringem Durchmesser können wie bekannt mit heißem Sand gefüllt und gebogen werden. Durch das Einfüllen von Sand wird verhindert, daß sich der Rohrquerschnitt an der Biegestelle während d^c Biegens ändert. Aus der deutschen Auslegeschrift 1268 815 ist es bekannt, Rohre mit großem Durchmesser und vor allem mit großer Wandstärke über eine Schablone zu biegen, wobei an der Außenseite ein Stahlband mitgeführt wird. Aus der Patentschrift 57 954 des Amtes für Erfindungs- und Patentwesen in Ost-Berlin ist das Biegen von Rohren mit einer Innenschablone und einer starren Gegenschablone bekannt. Für kompliziertere Profilstäbe, besonders Mehrkammerprofilstäbe, ist dieses Verfahren ungeeignet, da das Material ausweicht. Auskragende Schenkel werden dabei auf der einen Seite, der Druckzone, wellenförmig gestaucht, während sie auf der anderen Seite, der Zugzone, gestreckt werden. Dabei fallen in der Zugzone vorhandene Hohlräume ein,As is known, simple tubular profile bars of small diameter can be filled with hot sand and bent. By filling sand is prevented that the pipe cross-section at the bend during bending d ^ c changes. From the German Auslegeschrift 1268 815 it is known to bend pipes with a large diameter and above all with a large wall thickness over a template, a steel band being carried along on the outside. The bending of pipes with an inner template and a rigid counter-template is known from the patent specification 57 954 of the Office for Invention and Patents in East Berlin. This method is unsuitable for more complicated profile bars, especially multi-chamber profile bars, because the material gives way. Overhanging legs are compressed in a wave shape on one side, the pressure zone, while they are stretched on the other side, the tension zone. Thereby existing cavities fall into the tension zone,
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zu schaffen, mit der Mehrkammerprofilstäbe und Profilstäbe mit Nuten oder auskragenden Schenkeln, z. B. Fensterprofilstäbe, Einfaßprofilstäbe oder Zargenprofilstäbe, gebogen werden können.The invention is based on the object of creating a device with which multi-chamber profile rods and profile bars with grooves or protruding legs, e.g. B. window profile bars, edging profile bars or frame profile bars, can be bent.
Es wurde eine Vorrichtung zum Biegen von kantigen Ein- und Mehrkammerprofilstäben aus thermoplastischen Kunststoffen, die auf Warmformtemperatur erwärmt sind, mit einer der Innenseiten des zu biegenden Profilstabes entsprechenden Biegeschablone und einem biegsamen Andruckteil gefunden, die dadurch gekennzeichnet ist, daß die Biegeschablone die Kontur der Innenseite und einer daran angrenzenden Seite des zu biegenden Profilstabes aufweist, daß das biegsame Andruckteil entsprechend der Kontur der Außenseite ausgebildet ist und dieIt became a device for bending angular single and multi-chamber profile rods made of thermoplastic Plastics that are heated to thermoforming temperature with one of the inside of the to bending template corresponding to the bending profile bar and a flexible pressure part found, which is characterized in that the bending template has the contour of the inside and one adjacent to it Side of the profile bar to be bent, that the flexible pressure part is designed according to the contour of the outside and the
ίο Vorrichtung zum Abdecken der zweiten an die Innenseiten des Profilstabes angrenzenden Seite eine Abdeckplatte aufweist.ίο Device for covering the second on the inside of the profile bar adjoining side has a cover plate.
Fig. 1 zeigt eine erfindungsgemäße Biegevorrichtung nach Fortnahme der Abdeckplatte von oben,Fig. 1 shows a bending device according to the invention after removing the cover plate from above,
Fig. 2 eine dazugehörende Aufwärmevorrichtung undFig. 2 shows an associated heating device and
Fig. 3 die Biegevorrichtung im Querschnitt entlang der Linie A-A der Fig. I.Fig. 3 shows the bending device in cross section along the line AA of Fig. I.
Der Profilstab I wird in den Aufwärmevorrichtungen 2 an den zu biegenden Stellen bis zum plastischen Zustand erhitzt, dann mit einem Ende an die Biegeschablone 3 angelegt und zusammen mit der flexiblen Gegenschablone 4 mittels der Andrückrolle 7 angepreßt. Ta und 7 b zeigt die Andrückrolle in verschiedenen Stellungen. Nach der Biegung wird die Abdeckplatte S senkrecht zur Biegeebene angedrückt und gegebenenfalls über den Absaugstutzen 6 Vakuum angelegt, um ein Einfallen der hohlen Anschlagleiste 8 rückgängig zu machen. Entsprechend kann auch an der Unterseite des Profilstabes Unterdruck angelegt werden, wenn die Ausbildung des Profiles es erfordert.The profile bar I is heated in the heating devices 2 at the points to be bent to a plastic state, then one end is placed against the bending template 3 and pressed together with the flexible counter template 4 by means of the pressure roller 7. Ta and 7b shows the pressure roller in different positions. After bending the cover plate S is pressed perpendicularly to the bending plane and optionally applied via the vacuum suction nozzle 6, to make a dip of the hollow stop strip 8 reversed. Correspondingly, negative pressure can also be applied to the underside of the profile bar if the design of the profile requires it.
Mit der erfindungsgemäßen Vorrichtung können Profilstäbe nicht nur kreisförmig, sondern je nach Biegeschablone in jede gewünschte Krümmung verformt werden.With the device according to the invention, profile bars can not only be circular, but depending on Bending template can be deformed into any desired curvature.
Vorzugsweise wird in den Profilstab vor der Verformung ein Stützkern aus Stahl, Holz, glasfaserverstärktem Polyester oder einem ähnlichen verstärkenden Material eingelegt, der durch eingeschnittene Schlitze an der Innenseite der Biegung eine Verformung im entsprechenden Radius zuläßt, wobei die Summe der Schlitze der Verkürzung der Biegelinie von außen nach innen entspricht. Durch solche Stützkerne wird nicht nur eine Deformation des Hohlprofilstabes verhindert, sondern auch die Festigkeit des gebogenen Profilstabes, z. B. eines Fensterrahmens, erheblich erhöht.A support core made of steel, wood, glass fiber reinforced material is preferably inserted into the profile bar before the deformation Polyester or a similar reinforcing material inserted through the incised Slots on the inside of the bend allows a deformation in the corresponding radius, with the The sum of the slots corresponds to the shortening of the bending line from outside to inside. By such Support cores not only prevent deformation of the hollow profile rod, but also the strength of the curved profile bar, e.g. B. a window frame increased significantly.
Vor Anlegen an die Biegeschablone werden die Profilstäbe in bekannter Weise durch Aufwärmvorrichtungen, z. B. Umluftöfen, Elektroöfen, Flüssigkeitsbäder oder durch direkte Erwärmung an Metallflächen, im Bereich der Verformung bis zum plastischen Zustand erhitzt. Bei komplizierten Profilstäben ist es vorteilhaft, den Profilstab nicht gleichmäßig zu erhitzen. In der Zugzone sollte der Profilstab möglichst bis zum plastischen Bereich und in der Druckzone nur bis zum elastischen Bereich erwärmt werden. Durch eine solche unterschiedliche Erwärmung werden die Verformungen biem Biegen, die nachher durch die Andrückplatte wieder ausgeglichen werden müssen, möglichst kleingehalten.Before placing them on the bending template, the profile bars are heated in a known manner by means of heating devices, z. B. convection ovens, electric ovens, liquid baths or by direct heating on metal surfaces, heated in the area of deformation to the plastic state. For complicated profile bars it is advantageous not to heat the profile rod evenly. The profile bar should be in the tension zone if possible heated up to the plastic area and in the pressure zone only up to the elastic area. Such different heating will reduce the deformations after bending and afterwards must be balanced again by the pressure plate, kept as small as possible.
Die flexible Gegenschablone kann z. B. aus Holz, Metall oder einem Kunststoff sein. Sie hat, ähnlich wie die Stützkeme, entsprechend der Biegung einseitig eingeschnittene Schlitze.The flexible counter template can, for. B. made of wood, metal or a plastic. She has, similarly like the support cores, slots cut on one side according to the bend.
Für eine kreisförmige Biegung kann die Andrückrolle durch eine Stange mit dem KreismittelpunktFor a circular bend, the pressure roller can be supported by a rod with the center of the circle
verbunden sein. Bei beliebiger Biegeachse kann die Andrückrolle mit Bolzen, die in einer Schablone laufen, in der entsprechenden Kurvenform geführt werden. Sie kann auch durch, Federn oder hydraulisch an die Biegeschablone angedrückt werden.be connected. With any bending axis, the pressure roller can be guided in the corresponding curve shape with bolts that run in a template. It can also be pressed against the bending template by means of springs or hydraulically.
Sofort nach der Biegung wird die Abdeckplatte senkrecht zur Biegeebene aufgelegt. Sie soll den Profilstab vor den Abkühlen auf seine ursprüngliche Querschniiisubmessungen turückverformen. Im Druckbereich werden durch Materialstauung gebildete Wellungen zuriickgebildct und im Zugbereich können Einfallstellen durch Anlegen von Unterdruck ausgeglichen werden. Nach dem Abkühlen können die fertig gebogenen Profilstäbe entnommen Herden.Immediately after bending, the cover plate is placed perpendicular to the bending plane. You should use the profile bar before cooling down to its original Deform cross-section sub-measurements. in the Corrugations formed by material congestion are formed back in the pressure area and in the tension area sink marks can be compensated for by applying negative pressure. After cooling down you can the finished bent profile rods are taken from herds.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (3)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2053318A DE2053318C3 (en) | 1970-10-30 | 1970-10-30 | Device for bending angular single- and multi-chamber profile bars made of thermoplastics |
| NL7114651A NL7114651A (en) | 1970-10-30 | 1971-10-25 | |
| CH1565971A CH530250A (en) | 1970-10-30 | 1971-10-27 | Method and device for bending hollow profiles made of thermoplastics |
| AT930171A AT324690B (en) | 1970-10-30 | 1971-10-28 | METHOD AND DEVICE FOR BENDING HOLLOW PROFILES MADE OF THERMOPLASTIC PLASTICS |
| BE774628A BE774628A (en) | 1970-10-30 | 1971-10-28 | METHOD AND DEVICE FOR BENDING HOLLOW PROFILES IN THERMOPLASTIC MATERIAL |
| GB5050671A GB1374287A (en) | 1970-10-30 | 1971-10-29 | Process for bending elongate hollow members of thermoplastic material |
| SE7113759A SE371390B (en) | 1970-10-30 | 1971-10-29 | |
| FR7138998A FR2111967B1 (en) | 1970-10-30 | 1971-10-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2053318A DE2053318C3 (en) | 1970-10-30 | 1970-10-30 | Device for bending angular single- and multi-chamber profile bars made of thermoplastics |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2053318A1 DE2053318A1 (en) | 1972-05-04 |
| DE2053318B2 DE2053318B2 (en) | 1974-05-02 |
| DE2053318C3 true DE2053318C3 (en) | 1974-11-28 |
Family
ID=5786625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2053318A Expired DE2053318C3 (en) | 1970-10-30 | 1970-10-30 | Device for bending angular single- and multi-chamber profile bars made of thermoplastics |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT324690B (en) |
| BE (1) | BE774628A (en) |
| CH (1) | CH530250A (en) |
| DE (1) | DE2053318C3 (en) |
| FR (1) | FR2111967B1 (en) |
| GB (1) | GB1374287A (en) |
| NL (1) | NL7114651A (en) |
| SE (1) | SE371390B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19646654A1 (en) * | 1996-11-12 | 1998-05-14 | Theo Reinbold | Bending of hollow profiled sections especially PVC sections for window frames |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4649012A (en) * | 1980-06-03 | 1987-03-10 | Maschinen Witte Kg | Method of shaping an elongated product |
| DE3020922C2 (en) * | 1980-06-03 | 1983-05-11 | Maschinen Witte Kg, 4517 Hilter | Device for the arch-shaped reshaping of a profile section consisting of a thermoplastic material with hollow chambers |
| DE8313613U1 (en) * | 1983-05-07 | 1983-12-01 | Maschinen Witte Kg, 4517 Hilter | CLAMPING TABLE |
| DE3322572C2 (en) * | 1983-06-09 | 1985-04-11 | Schulten, Käthi, 4448 Emsbüren | Method and device for the arch-shaped reshaping of a profile section consisting of a thermoplastic material with hollow chambers |
| DE3942308A1 (en) * | 1989-12-21 | 1991-06-27 | Bosch Gmbh Robert | Thermoplastic engine intake pipes etc. - produced by injection moulding e.g. straight pipes for easy demoulding and then hot forming them into bends required |
| FR2681282B1 (en) * | 1991-09-17 | 1995-02-24 | Acb | PROCESS FOR BENDING A PROFILE IN COMPOSITE MATERIAL CONSISTING OF LONG FIBERS IN A THERMOPLASTIC MATRIX. |
| EP0790117A3 (en) * | 1996-02-14 | 1998-07-22 | McCUE CORPORATION | Method of and devices for thermoforming rigid plastic partially-sectioned profiles |
| GR1003371B (en) * | 1997-05-26 | 2000-05-04 | New method for bending of door and window frames from pvc or other plastic materials or curved or rounded shape and mechanical installations for the implementation of this method | |
| DE19806426C2 (en) * | 1998-02-17 | 2001-07-12 | Freers Brigitte E M | Method and device for forming profiles |
| US6054685A (en) * | 1998-05-01 | 2000-04-25 | Reinbold; Theo | Method for the arc-like shaping of profiled strands or strand sections consisting of a thermoplastic material |
| US6087635A (en) * | 1998-05-01 | 2000-07-11 | Reinbold; Theo | Method and apparatus for the arc-like shaping of profiled strands or strand sections consisting of a thermoplastic material |
| DE19918783A1 (en) | 1999-04-26 | 2000-11-02 | Kr Porsiplast Verpackungssys | Method and device for deforming hollow bodies made of thermoplastic material |
| DE19918784C1 (en) * | 1999-04-26 | 2001-01-18 | Kr Porsiplast Verpackungssys | Process for deforming hollow body panels made of thermoplastic material |
| DE202012002604U1 (en) | 2012-03-15 | 2013-06-18 | Maschinen Witte Gmbh & Co. Kg | Device for forming a plastic hollow profile workpiece in an arc and molding strip for this purpose |
| US9517576B2 (en) * | 2013-10-14 | 2016-12-13 | Kieffer & Co., Inc. | Method and apparatus for bending LED light guides |
-
1970
- 1970-10-30 DE DE2053318A patent/DE2053318C3/en not_active Expired
-
1971
- 1971-10-25 NL NL7114651A patent/NL7114651A/xx unknown
- 1971-10-27 CH CH1565971A patent/CH530250A/en not_active IP Right Cessation
- 1971-10-28 BE BE774628A patent/BE774628A/en unknown
- 1971-10-28 AT AT930171A patent/AT324690B/en not_active IP Right Cessation
- 1971-10-29 GB GB5050671A patent/GB1374287A/en not_active Expired
- 1971-10-29 FR FR7138998A patent/FR2111967B1/fr not_active Expired
- 1971-10-29 SE SE7113759A patent/SE371390B/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19646654A1 (en) * | 1996-11-12 | 1998-05-14 | Theo Reinbold | Bending of hollow profiled sections especially PVC sections for window frames |
| DE19646654C2 (en) * | 1996-11-12 | 1998-09-03 | Theo Reinbold | Methods and devices for the arcuate forming of profile strands or profile strand sections consisting of thermoplastic plastic |
Also Published As
| Publication number | Publication date |
|---|---|
| CH530250A (en) | 1972-11-15 |
| NL7114651A (en) | 1972-05-03 |
| DE2053318B2 (en) | 1974-05-02 |
| SE371390B (en) | 1974-11-18 |
| GB1374287A (en) | 1974-11-20 |
| AT324690B (en) | 1975-09-10 |
| BE774628A (en) | 1972-04-28 |
| DE2053318A1 (en) | 1972-05-04 |
| FR2111967B1 (en) | 1976-02-13 |
| FR2111967A1 (en) | 1972-06-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) |