DE1704059B2 - FORMING A TWO-SIDED OPEN TUBE SECTION MADE OF THERMOPLASTIC PLASTIC - Google Patents

FORMING A TWO-SIDED OPEN TUBE SECTION MADE OF THERMOPLASTIC PLASTIC

Info

Publication number
DE1704059B2
DE1704059B2 DE1968D0055266 DED0055266A DE1704059B2 DE 1704059 B2 DE1704059 B2 DE 1704059B2 DE 1968D0055266 DE1968D0055266 DE 1968D0055266 DE D0055266 A DED0055266 A DE D0055266A DE 1704059 B2 DE1704059 B2 DE 1704059B2
Authority
DE
Germany
Prior art keywords
forming
tube section
thermoplastic plastic
section made
open tube
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
Application number
DE1968D0055266
Other languages
German (de)
Other versions
DE1704059A1 (en
Inventor
Auf Nichtnennung Antrag
Original Assignee
Verformen eines beidseitig offenen Rohrabschnittes aus thermoplastischem Kunststoff Bohlmann, Karl Heinz, 3030 WaIsrode
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 Verformen eines beidseitig offenen Rohrabschnittes aus thermoplastischem Kunststoff Bohlmann, Karl Heinz, 3030 WaIsrode filed Critical Verformen eines beidseitig offenen Rohrabschnittes aus thermoplastischem Kunststoff Bohlmann, Karl Heinz, 3030 WaIsrode
Priority to DE1968D0055266 priority Critical patent/DE1704059B2/en
Publication of DE1704059A1 publication Critical patent/DE1704059A1/en
Publication of DE1704059B2 publication Critical patent/DE1704059B2/en
Granted legal-status Critical Current

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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/22—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes
    • B29C55/24—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes radial

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Description

1010

Die Erfindung betrifft das Verformen eines beidseitig offenen Rohrabschnittes aus thermoplastischem Kunststoff zum Herstellen eines blumentopfmanschettenförtnigen Hohlkörpers.The invention relates to the deformation of a pipe section made of thermoplastic material which is open on both sides for the production of a flower pot sleeve-shaped hollow body.

Hohlkörpern aus thermoplastischem Kunststoff kann man in bekannter Weise durch Spritzgießen oder durch Tiefziehen herstellen. Bei diesen Verfahren werden komplizierte und kostspielige Werkzeuge benötigt. Das Herstellen von blumentopfmanschettenförmigen Hohlkörpern ist bei diesen Verfahren nur unter erheblichem Aufwand möglich. Das dem Tiefziehverfahren ähnliche Blasverfahren hat darüber hinaus noch den zusätzlichen Nachteil, daß das zu verblasende Material beispielsweise wegen Unregelmäßigkeiten in der Zusammensetzung oder infolge von Temperaturunterschieden beim Blasen leicht platzt. Ein weiterer Nachteil beim Verformen von Hohlkörpern ist die ungleichmäßige Wanddicke der verformten Gegenstände, die insbesondere auf einen ungleichmäßigen Materialfluß zurückzuHollow bodies made of thermoplastic can be made in a known manner by injection molding or by Manufacture deep drawing. These methods require complicated and expensive tools. That The production of flowerpot cuff-shaped hollow bodies is only possible with this method under considerable circumstances Effort possible. The blow molding process, which is similar to the deep-drawing process, also has the additional one Disadvantage that the material to be blown, for example, because of irregularities in the composition or bursts easily when blowing due to temperature differences. Another disadvantage with the Deformation of hollow bodies is the uneven wall thickness of the deformed objects, which in particular back to an uneven material flow

führen ist.lead is.

Die Erfindung hat sich die Aufgabe gestellt, dies«, Nachteile zu beseitigen und ein einfaches Verfahren zum Herstellen von blumentopfmanscheitenförmigen Hohlkörpern vorzuschlagen, mit dem diese Hohlkörper als Massenartikel hergestellt werden können.The invention has set itself the task of eliminating these disadvantages and a simple method to propose for the production of flowerpot manscheitenformen hollow bodies with which these hollow bodies can be mass-produced.

Zur Lösung dieser Aufgabe wird ein bekanntes Verfahren zum Verformen eines beidseitig offenen Rohrabschnittes aus thermoplastischem Kunststoff angewendet, bei dem der Rohrabschnitt erwärmt, durch Spreizen aufgeweitet und anschließend abgekühlt wird.A known method for deforming a pipe section open on both sides is used to achieve this object Made of thermoplastic material used, in which the pipe section is heated by Spreading is expanded and then cooled.

Ein derartiges Verfahren und eine entsprechende Vorrichtung zum Verformen eines Rohrabschnittes in dessen Endbereich ist zum Herstellen einer Rohrmuffe bekannt (DT-AS 12 55 293). Bei diesem Verfahren wird der Endbereich des Rohrabschnittes erwärmt und die für die Rohrmuffe erforderliche Sicke geformt.Such a method and a corresponding device for deforming a pipe section in its end area is known for producing a pipe socket (DT-AS 12 55 293). In this procedure, the end of the pipe section is heated and the bead required for the pipe socket is formed.

Überraschenderweise hat sich gezeigt, daß man durch Erwärmen und Aufweiten durch Spreizen des gesamten Rohrabschnittes der durch Extrusion, Kleben oder Schweißen hergestellt sein kann, auf einfache Weise blumentopfmanschettenförmige Hohlkörper von ausgezeichneter Gleichmäßigkeit herstellen kann, ohne daß eine Ausdünnung oder gar ein Platzen des Rohrabschnittes erfolgt. Mit der Anwendung des bekannten Verfahrens lassen sich die verschiedensten blumentopfmanschettenförmigen Hohlkörper ohne teure Formen in einer Gestaltsvielfalt herstellen, die nur von der Ausbildung der Spreizarme abhängig ist.Surprisingly, it has been shown that by heating and expanding by spreading the entire Pipe section which can be produced by extrusion, gluing or welding, in a simple manner Can produce flowerpot cuff-shaped hollow bodies of excellent uniformity, without thinning or even bursting of the pipe section. With the application of the known A wide variety of flowerpot cuff-shaped hollow bodies can be processed without expensive Produce shapes in a variety of shapes that only depends on the design of the spreading arms.

Diese blumentopfmanschettenartigen Hohlkörper lassen sich als Massenartikel herstellen, die zur Dekoration, als Verblendschirm für Blumenschalen, Töpfe, Lampen und Behälter geeignet sind.These flowerpot cuff-like hollow bodies can be produced as mass-produced items that are used for decoration, are suitable as a facing screen for flower bowls, pots, lamps and containers.

Claims (1)

Patentanspruch:Claim: Anwendung eines Verfahrens zum Verformen eines beidseitig offenen Rohrahschnittes aus thermoplastischem Kunststoff, bei dem der Rohrabschnitt erwärmt, durch Spreizen aufgeweitet und anschließend abgekühlt wird, zum Herstellen eines blumentopfmanschettenfönnigen Hohlkörpers.Application of a process for deforming a thermoplastic pipe cut that is open on both sides Plastic, in which the pipe section is heated, expanded by spreading and then cooled, for the production of a Hollow body with a flowerpot cuff.
DE1968D0055266 1968-02-06 1968-02-06 FORMING A TWO-SIDED OPEN TUBE SECTION MADE OF THERMOPLASTIC PLASTIC Granted DE1704059B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1968D0055266 DE1704059B2 (en) 1968-02-06 1968-02-06 FORMING A TWO-SIDED OPEN TUBE SECTION MADE OF THERMOPLASTIC PLASTIC

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1968D0055266 DE1704059B2 (en) 1968-02-06 1968-02-06 FORMING A TWO-SIDED OPEN TUBE SECTION MADE OF THERMOPLASTIC PLASTIC

Publications (2)

Publication Number Publication Date
DE1704059A1 DE1704059A1 (en) 1971-01-28
DE1704059B2 true DE1704059B2 (en) 1976-04-08

Family

ID=7056383

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1968D0055266 Granted DE1704059B2 (en) 1968-02-06 1968-02-06 FORMING A TWO-SIDED OPEN TUBE SECTION MADE OF THERMOPLASTIC PLASTIC

Country Status (1)

Country Link
DE (1) DE1704059B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098669A1 (en) * 1982-07-08 1984-01-18 CEBAL Verpackungen GmbH & Co. KG Method of widening conical tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098669A1 (en) * 1982-07-08 1984-01-18 CEBAL Verpackungen GmbH & Co. KG Method of widening conical tubes

Also Published As

Publication number Publication date
DE1704059A1 (en) 1971-01-28

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee