DE1778323A1 - Device for holding the support air during the production of stretched plastic pipe - Google Patents

Device for holding the support air during the production of stretched plastic pipe

Info

Publication number
DE1778323A1
DE1778323A1 DE19681778323 DE1778323A DE1778323A1 DE 1778323 A1 DE1778323 A1 DE 1778323A1 DE 19681778323 DE19681778323 DE 19681778323 DE 1778323 A DE1778323 A DE 1778323A DE 1778323 A1 DE1778323 A1 DE 1778323A1
Authority
DE
Germany
Prior art keywords
holding
pipe
production
plastic pipe
stretched plastic
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.)
Pending
Application number
DE19681778323
Other languages
German (de)
Inventor
Hans Dipl-Ing Jena
Hans Umbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Priority to DE19681778323 priority Critical patent/DE1778323A1/en
Priority to FR6929112A priority patent/FR2057527A5/fr
Priority to US854224A priority patent/US3669580A/en
Priority claimed from GB5207/70A external-priority patent/GB1298634A/en
Publication of DE1778323A1 publication Critical patent/DE1778323A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16Cutting rods or tubes transversely
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/88Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/902Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies internally
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Description

Vorrichtung zum Halten der Stützluft bei der Fertigung von @@rstrecktem Kunststoffrohr Bei der Fertigung von verstrecktem Kunststoffrohr ist bekanntlich Stützluft von ca. 4 atü im Rohr erforderlich. Device to hold the supporting air during the production of stretched Plastic pipe In the production of stretched plastic pipe is known Support air of approx. 4 atm is required in the pipe.

Diese Luft wird durch Abklemmen des Rohrendes auf Druck genalten. Bei der Fertigung kann das Rohr, das unter dem @@aendruck von atü steht, nur durch stückweises Abklemmen drucklbs gemacht werden und dann erst zur Weiterverirbeitung gelangen. Bekannt ist, dass auf diese Weise Rdrstränge von ca, 5 m gefertigt werden, die im Anschluss zu Rohrabschnitten von ca. 70 mm Länge z.B. für Schrotpatronen zerstückelt werden. In den 5m langen Rohrsträngen sind jedoen K@emmstellen vorhanden, die bei der Zerstäckelung herausgesucht werden müssen und Ils Ausschuss gelten.This air is applied under pressure by clamping the end of the pipe. During production, the pipe, which is under the pressure from atü, can only pass through gradually disconnecting pressure pounds and only then for further processing reach. It is known that rounds of approx. 5 m are manufactured in this way, the following to pipe sections of approx. 70 mm in length, e.g. for shotgun shells to be dismembered. In the 5m long pipe strings there are any K @ emmstellen which have to be picked out during the chopping and Il's committee apply.

Der Effi@@ing Lie@@ die @@ abe zag@unde, dies @teateile zu beseivigen und eine Zor@ichtung zu schiffen, die eine @ontinuierliche Ze@@cheitung von zerstrecktem Kueststoffr@ac zulässt und keine @@sschussteile bei der Weit @verarbe@t@ng zu kleinen Rohcabschnitten liefert.The Effi @@ ing Lie @@ die @@ abe zag @ unde to @teateile this and to embark on a Zor @ icht, which is a @continuous line of distant Kueststoffr @ ac allows and no @@ s shot parts in the far @ processing @ t @ ng too small Raw cuts supplies.

Die Aufgabe wird erfindungsgemäss dadurch gelöst, dass in das offene Ende des Kunsts-toffrohres ein stabartiger ferromagnetischer Verschlusspfropfen eingebracht und durch das Peld eines Magneten gehalten ist. Die Gesamtkraft des Haltemagneten kann auch durch Addition von Einzelkräften entstehen; sie muss in jedem Fall ausreichend sein, um den Verschlusspfropfen im Inneren des Kunststoffrohres gegen den inneren Stützdruck und die Reibung des übergeschobenen Rohres zu halten, Ein aus einer Krümmung der Führung des Eunststoffrohres bestehender Sicherheitsbogen hindert den Verschlusspfropfen am Hinausschiessen bei Überdruck oder Ausfall des Magnetfeldes. Durch die Zusammenfassung der erfindungsgemässen Vorrichtung mit einem Schrittvorschub oder Rohrabzug und einer Abschneidevorrichtung zu einer Baugruppe wird ein abfalloses Ablängen oder Zerstückeln von Kunststoffrohren ermöglicht0 Nachstehend ist die Erfindung mit Bezug auf die Zeichnung beispielsweise näher erläutert; es zeigen: Fig. 1 eine magnetische Verschluss-Stopfen-Haltevorrichtung mit Magnetfluss quer zur Rohrachse; Fig. 2 eine magnetische Verschluss-Stopfen-Haltevorrichtung mit Magnetfluss längs zur Rohrachse; Fig, 3 eine Baugruppe zum abfallosen Ablangen von Eunststoffrohren.The object is achieved according to the invention in that in the open At the end of the plastic pipe there is a rod-like ferromagnetic stopper is introduced and held by the field of a magnet. The overall power of the Holding magnets can also be created by adding individual forces; she has to be in In any case, it will be sufficient to place the sealing plug inside the plastic pipe to hold against the internal support pressure and the friction of the pipe pushed over, A safety arch consisting of a curve in the guide of the plastic pipe prevents the stopper from shooting out in the event of overpressure or failure of the Magnetic field. By combining the inventive device with one Step feed or pipe withdrawal and a cutting device to form an assembly Waste-free cutting to length or dismemberment of plastic pipes is made possible below the invention is explained in more detail with reference to the drawing, for example; it 1 shows a magnetic closure-stopper holding device with magnetic flux transverse to the pipe axis; Figure 2 shows a magnetic closure plug retainer with magnetic flux along the pipe axis; 3 shows an assembly for trimming without waste of plastic pipes.

In Fig. 1 und 2 ist die Ausbildung der VerschluBstopfen-Haltevorrichtung dargestellt. Bei der Auslegung des Ealtemagneten 1 ist der unvermeidlich hohe Luftspalt 2 und der geringe Durchmesser des ferromagnetischen Verschlu#pfropfens 3 entsprechend zu berücksichtigen, um die hohe erforderliche Haltekraft P zu bekommen. In Fig. 1 ist eine Aufteilung des Magnetfeldes quer zur Kraftrichtung der Haltekraft P dargestellt, wobei die gewünschte Größe der Haltekraft P durch Addition mehrerer Einzelkräfte zustandekommt, was durch eine entsprechende Anzahl einander gegenüberliegender Polschuhe 4 erreicht wird. Die Haltekraft P kann auch durch ein in Richtung der Rohrachse verlaufendes Magnetfeld hervorgerufen werden, wobei sich mehrere Einzelfelder addieren, die durch besondere Ausbildung der Polschuhe 5 erzeugt werden, und zwar dadurch, dass die Polschuhe nur das Kunststoffrohr C umgreifen und gegeneinander versetzt sind.In Fig. 1 and 2 is the design of the stopper holding device shown. When designing the Ealtemagneten 1, the inevitable high air gap is 2 and the small diameter of the ferromagnetic locking plug 3 accordingly to take into account the high required To get holding force P. In Fig. 1 a division of the magnetic field is transverse to the direction of force of the holding force P shown, the desired size of the holding force P by adding several Individual forces come about, which is achieved by a corresponding number of opposing forces Pole shoes 4 is reached. The holding force P can also by a in the direction of Magnetic field running along the pipe axis can be generated, with several individual fields add, which are generated by the special design of the pole pieces 5, namely in that the pole pieces only grip the plastic tube C and against each other are offset.

Die in Fig. 3 dargestellte Baugruppe zeigt im Schema den Teil einer Verstreckungsanlage mit dem letzten Rohrabzug 7 und den Tragrost 8 für die Ausgleichsschleife 9 des Kunststoffrohres 6o Die Ausgleichsschleife ist erforderlich, um die kontinuierliche Fertigung des Kunststoffrohres in der Verstreckanlage in das schrittweise Verarbeiten beim Abtrennen des Rohrendes lo überzuführen. Der Schrittvorschub 11 wird im Takt zu der Abschneidevorrichtung 12 gesteuert, wobei das Kunststoffrohr 6 jeweils mit einer der beiden Klemmzangen 13 gehalten ist, Anschliessend ist die Verschlußpfropfen-Haltevorrichtung 14 angeordnet. Der aus einer Krümmung der Führung des Kunststoffrohres 6 bestehende Sicherheitsbogen 15 hindert den Verschlußpfropfen 3 bei Fehlern in der Anlage am Herausschießen aus dem Kunststoffrohr 6.The assembly shown in Fig. 3 shows the part of a scheme Stretching system with the last pipe haul-off 7 and the support grid 8 for the compensation loop 9 of the plastic pipe 6o The compensation loop is required to ensure the continuous Production of the plastic pipe in the stretching system in the step-by-step processing when cutting off the end of the pipe lo. The step feed 11 is in tact controlled to the cutting device 12, the plastic pipe 6 each with one of the two clamping tongs 13 is held, then the closure plug holding device 14 arranged. The one consisting of a curvature of the guide of the plastic pipe 6 Safety arch 15 prevents the plug 3 in the event of errors in the system Shoot out of the plastic tube 6.

In der Absohneidemaschine 12, die nach Bedarf für Einfach-oder Mehrfachabschnitt ausgelegt sein kann, wird über den Rohranschlag i6 mit einer Folgesteuerung der Ar-beitsablauf des Schneidens und Vorschiebens gesteuert,In the decoction machine 12, as required for single or multiple sections can be designed, is via the pipe stop i6 with a sequence control of the Work sequence of cutting and feeding controlled,

Claims (4)

P a t e n t a n s p r ü c h e 1. Vorrichtung zum Halten der Stützluft bei der Fertigung von verstrecktem Kunststoffrohr, dadurch gekennzeichnet, dass in das offene Ende des Kunststoffrohres (6) ein stabartiger ferromagnetischer Verschlußpfropfen (3) eingebracht und durch das Feld eines Magneten (l) gehalten ist. P a t e n t a n s p r ü c h e 1. Device for holding the supporting air in the production of stretched plastic pipe, characterized in that a rod-like ferromagnetic stopper in the open end of the plastic tube (6) (3) is introduced and held by the field of a magnet (l). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Gesamtkraft des Haltemagneten (1) durch Addition von Einzelkräften entsteht.2. Device according to claim 1, characterized in that the total force of the holding magnet (1) is created by adding individual forces. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein Sicherheitsbogen (15), bestehend aus einer Krümmung der Führung des Kunststoffrohres (6), den Verschlu#pfropfen (3) am Hinausechiessen bei Überdruck odr Ausfall des Magnetfeldes hindert.3. Apparatus according to claim 1, characterized in that a safety arch (15), consisting of a curve in the guide of the plastic tube (6), the stopper (3) prevents shooting out in the event of overpressure or failure of the magnetic field. 4. Vorrichtung nach den Ansprüchen 1 bis 3, gekennzeichnet durch die Zusammenfassung mit einem Schrittvorschub (11) oder Rohrabzug und einer Abschneidevorric (htung (i2) zu einer Baugruppe, L e e r s e i t e4. Device according to claims 1 to 3, characterized by the Summary with a step feed (11) or pipe puller and a cutting device (respect (i2) to an assembly, L e r s e i t e
DE19681778323 1968-04-19 1968-04-19 Device for holding the support air during the production of stretched plastic pipe Pending DE1778323A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19681778323 DE1778323A1 (en) 1968-04-19 1968-04-19 Device for holding the support air during the production of stretched plastic pipe
FR6929112A FR2057527A5 (en) 1968-04-19 1969-08-26
US854224A US3669580A (en) 1968-04-19 1969-08-29 Apparatus for maintaining the internal air pressure during the production of sized plastic pipe

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19681778323 DE1778323A1 (en) 1968-04-19 1968-04-19 Device for holding the support air during the production of stretched plastic pipe
US85422469A 1969-08-29 1969-08-29
BE738394 1969-09-03
GB5207/70A GB1298634A (en) 1969-08-29 1970-02-03 Improvements in or relating to the manufacture of plastics tubing

Publications (1)

Publication Number Publication Date
DE1778323A1 true DE1778323A1 (en) 1971-09-09

Family

ID=27424944

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681778323 Pending DE1778323A1 (en) 1968-04-19 1968-04-19 Device for holding the support air during the production of stretched plastic pipe

Country Status (1)

Country Link
DE (1) DE1778323A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589384A1 (en) * 1985-10-30 1987-05-07 Lhomme Sa DEVICE FOR SINGING TUBES
EP0340082A1 (en) * 1988-04-25 1989-11-02 Lhomme Sa Apparatus for cutting tubes
FR2637529A2 (en) * 1985-10-30 1990-04-13 Lhomme Sa Device for cutting tubes
EP1103355A1 (en) * 1999-11-26 2001-05-30 SCA Hygiene Products AB Method of forming product rolls
EP1136199A1 (en) * 1999-11-26 2001-09-26 SCA Hygiene Products AB Method of forming product rolls

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589384A1 (en) * 1985-10-30 1987-05-07 Lhomme Sa DEVICE FOR SINGING TUBES
EP0225235A1 (en) * 1985-10-30 1987-06-10 Lhomme Sa Tube-cutting apparatus
US4889023A (en) * 1985-10-30 1989-12-26 Lhomme S.A. Tube truncation apparatus and method
FR2637529A2 (en) * 1985-10-30 1990-04-13 Lhomme Sa Device for cutting tubes
US5111721A (en) * 1985-10-30 1992-05-12 Lahomme S.A. Tube truncation apparatus and method
EP0340082A1 (en) * 1988-04-25 1989-11-02 Lhomme Sa Apparatus for cutting tubes
US5086677A (en) * 1988-04-25 1992-02-11 Lhomme S.A. Tube truncation apparatus and method
EP1103355A1 (en) * 1999-11-26 2001-05-30 SCA Hygiene Products AB Method of forming product rolls
WO2001038053A1 (en) * 1999-11-26 2001-05-31 Sca Hygiene Products Ab Method of forming product rolls
EP1136199A1 (en) * 1999-11-26 2001-09-26 SCA Hygiene Products AB Method of forming product rolls

Similar Documents

Publication Publication Date Title
DE1778323A1 (en) Device for holding the support air during the production of stretched plastic pipe
DE1067346B (en)
DE102019123774A1 (en) Container gripper and container transport device
EP0221482A1 (en) Cable-transporting method and apparatus
EP3653691B1 (en) Device for holding and centering a candle wick in a container
DE2125119C3 (en) Device for separating ring-shaped workpieces
DE2015921C3 (en) Device for cutting through continuously extruded plastic pipes
DE102006026994A1 (en) Arrangement and method for processing wire
DE1006546B (en) Device for series inductive heating of workpieces
DE1502885C3 (en) Process for shearing off metal rods
DE8102006U1 (en) SEALING DEVICE
AT332704B (en) ACTUATING DEVICE FOR APPLYING THE TUBES TO THE DAMP IN BENDING MACHINES
DE3025842C2 (en) Support device for cable ends on a cable splice
DE835096C (en) Method and device for expanding slotted rings, in particular piston rings
AT306350B (en) Device for holding the supporting air when stretching a pipe made of thermoplastic material
DE3013071C2 (en)
DE2710964A1 (en) DEVICE FOR TIGHTENING A NUT ON A THREADED BOLT
CH664061A5 (en) Tree fruit-picking aid - comprises hooked bar engaging between branch and ladder
DE619001C (en) Device for bending bars or tubes by means of a shaped piece
DE614846C (en) Device for tying hoses onto the inserted hose coupling piece by means of wire
DE2211636C3 (en) Device for inserting ring wedges into rope end faces
DE967927C (en) Arrangement for setting a favorable contact pressure with detachable electrical connections
DE1804143A1 (en) Compound ceramic/metal pipe having improved shock - absorbing poperties
DE927000C (en) Clamp connection for pipes
AT235661B (en) Device for attaching a connector to a bar of material