DE655139C - Process for loosening mainly large pipes and hollow bodies from the push rod - Google Patents

Process for loosening mainly large pipes and hollow bodies from the push rod

Info

Publication number
DE655139C
DE655139C DER90900D DER0090900D DE655139C DE 655139 C DE655139 C DE 655139C DE R90900 D DER90900 D DE R90900D DE R0090900 D DER0090900 D DE R0090900D DE 655139 C DE655139 C DE 655139C
Authority
DE
Germany
Prior art keywords
hollow bodies
push rod
large pipes
mainly large
loosening
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
Application number
DER90900D
Other languages
German (de)
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.)
OSKAR ROEBER
Original Assignee
OSKAR ROEBER
Publication date
Priority to DER90900D priority Critical patent/DE655139C/en
Application granted granted Critical
Publication of DE655139C publication Critical patent/DE655139C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C45/00—Separating mandrels from work or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Metal Extraction Processes (AREA)

Description

Verfahren zum Lösen vorwiegend größer Rohre und Hohlkörper vom Stoßdorn Bei der Herstellung großer (Rohre und Hohlkörper auf Rohrstoßbänken macht es große Schwierigkeiten, das gezogene Rohr vom Stoßdorn zu lösen. Es ist hierbei praktisch nicht möglich, z. B. mit Hilfe von Aufwalzmaschinen (Friemelwalzwerke), besonders auch bei dickeren Rohrwandstärken, das Rohr von der Dornstange zu befreien.Method for loosening mainly large pipes and hollow bodies from the push rod When making large (pipes and hollow bodies on pipe bumpers it makes large Difficulty loosening the drawn tube from the push rod. It comes in handy here not possible, e.g. B. with the help of rolling machines (Friemel rolling mills), especially Even with thicker pipe wall thicknesses, free the pipe from the mandrel bar.

Nach der Erfindung wird vorgeschlagen, einen konisch ausgebildeten Dorn zu. verwenden und die Bewegung desselben im Anschluß an den Durchgang durch die Ziehwerkzeuge derart unelastisch abzubremsen, daß das in In der Zeichnung ist ein Bewegung befindliche Rohr vom abgebremsten Dorn abrutscht und danach der Dorn bequem aus dem Rohr herausgezogen werden kann.According to the invention it is proposed a conically shaped Thorn closed. use and move it following passage through to brake the drawing tools so inelastic that it is in the drawing a moving pipe slips off the braked mandrel and then the mandrel can be easily pulled out of the tube.

Damit bei der Verwendung stark konischer Dornstangen die Wandstärke des Rohres auf seiner ganzen Länge gleich wird, werden mehrteilige Ziehringe oder auch Walzen als Ziehwerkzeuge benutzt, die während der Durchstoßbewegung des Gestänges entsprechend der Konizität der Dornstange allmählich geöffnet werden. nach der Erfindung schematisch dargestellt. Die Abbildung zeigt im Längsschnitt das Kopfende des Hohlkörpers mit konischer Dornstange sowie die Bremsvorrichtung ;für die Dornstange.So when using strongly conical mandrel bars the wall thickness of the pipe becomes the same over its entire length, multi-part pull rings or also used rollers as drawing tools during the piercing movement of the rod be gradually opened according to the taper of the mandrel rod. according to the invention shown schematically. The figure shows the head end of the hollow body in a longitudinal section with conical mandrel bar as well as the braking device; for the mandrel bar.

Nach dem Durchgang der konischen Dornstange d mit dem Hohlkörper f durch die Ziehwerkzeuge stößt die Verlängerung der Dornstange d gegen die Bremsstange g, wodurch die D-ornstanged infolge des Widerstandes der Bremsfeder r plötzlich an der Weiterbewegung verhindert wird, während der Hohlkörper/ durch die lebendige Kraft seine Bewegung in Pfeilrichtung fortsetzt und sich so von der k onischen D@ornstange,d löst.After the passage of the conical mandrel rod d with the hollow body f the extension of the mandrel rod d hits the brake rod as a result of the drawing tools g, causing the D-ornstanged suddenly as a result of the resistance of the brake spring r is prevented from moving forward while the hollow body / by the living Kraft continues its movement in the direction of the arrow and thus moves away from the conical thorn bar, i.e. solves.

Claims (1)

PATENTANSPRUCH: Verfahren zum Lösen vorwiegendgroßer Rohre und Hohlkörper vom Stoßdorn, dadurch gekennzeichnet, daß die Bewegung eines konisch ausgebildeten Dornes im Anschluß an den Durchgang durch die Ziehwerkzeuge möglichst unelastisch abgebremst wird, so daß das in Bewegung befindliche Werkstück vom abgebremsten Dorn abrutscht.PATENT CLAIM: Method for loosening mainly large pipes and hollow bodies from the push pin, characterized in that the movement of a conically shaped Mandrel as inelastic as possible in connection with the passage through the drawing tools is braked so that the moving workpiece from the braked mandrel slips off.
DER90900D Process for loosening mainly large pipes and hollow bodies from the push rod Expired DE655139C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER90900D DE655139C (en) Process for loosening mainly large pipes and hollow bodies from the push rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER90900D DE655139C (en) Process for loosening mainly large pipes and hollow bodies from the push rod

Publications (1)

Publication Number Publication Date
DE655139C true DE655139C (en) 1938-01-10

Family

ID=7418455

Family Applications (1)

Application Number Title Priority Date Filing Date
DER90900D Expired DE655139C (en) Process for loosening mainly large pipes and hollow bodies from the push rod

Country Status (1)

Country Link
DE (1) DE655139C (en)

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