EP0839590A1 - Dispositif et procédé pour la formation de collerettes latérales sur corps creux - Google Patents

Dispositif et procédé pour la formation de collerettes latérales sur corps creux Download PDF

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Publication number
EP0839590A1
EP0839590A1 EP97114167A EP97114167A EP0839590A1 EP 0839590 A1 EP0839590 A1 EP 0839590A1 EP 97114167 A EP97114167 A EP 97114167A EP 97114167 A EP97114167 A EP 97114167A EP 0839590 A1 EP0839590 A1 EP 0839590A1
Authority
EP
European Patent Office
Prior art keywords
necking
lance
drawing body
shaping
pulling
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.)
Withdrawn
Application number
EP97114167A
Other languages
German (de)
English (en)
Inventor
Ernst Megow
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.)
Minimax GmbH and Co KG
Preussag AG Minimax
Original Assignee
Minimax GmbH and Co KG
Preussag AG Minimax
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 Minimax GmbH and Co KG, Preussag AG Minimax filed Critical Minimax GmbH and Co KG
Publication of EP0839590A1 publication Critical patent/EP0839590A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/29—Making branched pieces, e.g. T-pieces
    • B21C37/292—Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall

Definitions

  • the invention relates to a device and a method for necking hollow bodies, in particular pipe sections for creating side branches, for example for fire protection devices.
  • sprinklers In a pipeline system of a stationary fire protection system, sprinklers must be attached to the pipelines of the pipeline system in a suitable manner. For this purpose, a possibility is to be created, for example with a tapered external thread, when screwing it into a thread which is located in or on the pipeline.
  • These pipelines are usually installed in a horizontal orientation below office and / or hall ceilings.
  • the sprinklers should be installed vertically downwards or upwards in order to distribute the extinguishing medium as evenly as possible in the event of a fire and to achieve an optimal extinguishing effect. Since different sprinklers with different thread diameters have to be installed, different sized neckings must also be made. So-called sprinkler pipes are used in particular as pipelines.
  • the pulling body which consists of 3 parts, is moved through a breakthrough in the wall of a container with the aid of a transport device, which can be, for example, a hydraulically operating device, thereby forming a collar.
  • a transport device which can be, for example, a hydraulically operating device
  • two burners ensure sufficient heating of the collar that is formed.
  • the drawing body has to be introduced into the hollow body and adjusted there before it can be pulled through the opening in the container by the hydraulic transport device.
  • a further disadvantage is that the container is deformed by the local heating of the edge of the opening. This is because the annealing of a metal causes it to shrink by a greater amount when it cools down than it expands when heated.
  • the object of the invention is to provide a device and a method with which the necking of hollow bodies, in particular of pipelines, of fire protection devices can be carried out more quickly and in an automated manner, the container being in its original, axially geometrical position again after the necking process has ended.
  • the object is achieved by the features of claims 1 and 11 according to the invention.
  • a necking device which consists of a pulling device (1) and a drawing body (11) as well as a lance (5), at least one hold-down device (7) and a shaping device (10), at least one drawing body (11) on the lance (5) is arranged and the longitudinal axes of the pulling device (1), the drawing body (11) and the shaping device (10) lie approximately on one axis.
  • a container preferably a tube
  • the shaping device By means of such a necking device (20), a container, preferably a tube, can be pretensioned by the shaping device, and the drawing body can be precisely positioned by means of the lance, so that defined neckings can be produced while maintaining the axial geometry of the container or tube.
  • the lance (5) has at least one recess (12), in each of which a drawing body (11) can be placed.
  • a drawing body (11) can be placed in each of which a drawing body (11) can be placed.
  • Such a depression in the lance has the advantage that drawing bodies can also be used, the height of which is greater than the distance between the lance and the inner wall of the container.
  • At least one fixing pin (13) is arranged on the lance (5) or in the recess (12). By means of this fixing pin, the drawing body can advantageously be positioned in a defined manner and secured against slipping or shifting.
  • the lance (5) is fixedly connected at one end to the necking device (20), in particular by means of the depositing device, or is displaceable in the direction of the longitudinal axis of the lance (5).
  • the position of the drawing body with respect to the necking device is always defined and thus avoids complex adjustment during a necking process. Is the lance (5) towards you
  • a depositing device is also connected to the necking device.
  • This storage device consists in particular of a roller conveyor.
  • a hollow body, e.g. B. a tube can be placed on this storage device and pushed over the lance in the desired position. This can also be automated, for example, with a gripper device.
  • the arrangement of two hold-downs (7), the pulling device (1) being arranged between the hold-downs (7) has the advantage that a counterforce can be applied to both sides of the hollow body during the necking process in order to counteract an undesired deformation of this hollow body.
  • a power operated cylinder e.g. B. a tubular cylinder used.
  • a prestress in the hollow body or tube can be achieved before the heating associated with the necking.
  • the drawing body is in the form of a blunt cone, with which a uniform necking can be achieved during the necking process.
  • the drawing body has the shape of a truncated cone at its end opposite the drawing device, in order to be moved back into the tube in the direction of the axis (21) after not quite exact necking, the drawing body being guided along the surface of the truncated cone and can be put back on the lance in its original position.
  • the method according to the invention provides that when hollow bodies, in particular pipelines, are necked out, in which a drawing body is pulled through an opening in the migration of a hollow body by means of a pulling device, the edge of the opening being heated during the necking process, the drawing body is drawn in via a lance insert the pipe and put it back on the lance after the necking process.
  • Such a procedure allows, particularly in the case of a plurality of neckings to be carried out on a hollow body, quick and reliable necking without complex adjustment of the drawing body with respect to the opening or a bore.
  • the set-up times for the individual necking processes are also minimized.
  • the necking process has to be automated, which leads to a more efficient production of hollow bodies provided with neckings.
  • Fig. 1 shows the section through a pipe necking device.
  • Fig. 2 shows the position of the drawing body during the necking process.
  • the necking device 20 in FIG. 1 is combined with a cooling device 9, a drilling device 2, a roller conveyor 4 and consists of a pulling device 1, a lance 5, two hold-down devices 7, the shaping device 10 and a drawing body (not shown).
  • the tube 8 to be provided with neckings lies on the roller conveyor 4.
  • an opening 15 is first drilled where the necking is to be carried out.
  • the tube 8 is pushed over the stationary lance 5, on which there is a drawing cone 11 in a recess 12, so that the bore is located exactly above the drawing cone 11.
  • the tube 8 is held in its position during the necking process by means of two pneumatic hold-down devices 7, each consisting of a solid steel prism.
  • the shaping device 10, which consists of a hydraulic tube cylinder, is now pressed against the tube from below, so that a defined bias is created.
  • a tap or a thread former can also be clamped in the drilling device 2 in order to cut or form a thread into the necking after the necking process.
  • a grinding device can be combined with the necking device according to the invention in order to deburr or grind off the edges of the necking.
  • 16 denotes the pipe wall and 15 the hole drilled in the pipe wall.
  • the drawing cone 11 is placed in a recess 12 of the lance 5 on a fixing pin 13. Now, by means of a bolt 31 of the pulling device 1, which was screwed into the bore with the internal thread 14 of the drawing cone 11, the drawing cone 11 is drawn through the bore 15 from the inside to the outside.
  • the necking device and the devices coupled to it can be connected
  • a control device 23 to automate the necking process as well as the preparatory drilling and the subsequent thread form or cutting processes.
  • a tube 8 is placed on the roller conveyor 4.
  • the gripper picks up the pipe 8 by means of the control and pushes it onto the lance 15 in the direction of the lance.
  • the necking position provided later is positioned under the drilling device 2 for the purpose of drilling.
  • the drilling process can be controlled by means of the control device 23.
  • the tube 8 is then pushed further onto the lance 5. This process is repeated each time with further holes or neckings provided.
  • the last hole drilled is positioned under the pulling device 1.
  • the tube 8 must be mounted against the drawing direction of the drawing cone so that the molding forces can be absorbed. On the one hand, it must be ensured that the attachment or fixation is not too far from the shaping position or necking position so that the resulting tube does not deform the entire tube from its longitudinal axis. On the other hand, the attachment must not be too close to the shaping position, since the zone of the tube wall around the predrilled hole must be annealed red uniformly for the shaping or necking process.
  • the attachment or fixation is achieved by means of the hold-down 7.
  • the hold-down device 7 is also controlled by the control device 23.
  • the zone of the tube wall 16 around the predrilled hole 15 is heated until it glows. This is done with a burner or inductively.
  • the drawing body 11 preferably has the shape of a truncated cone at its end 22 opposite the drawing device in order to be able to be better returned to the original position by the necking after the necking process.
  • the fixing pin 13 is preferably designed as a hexagon. 21 denotes the longitudinal axis of the drawing body, on which the movement of the pulling device 1 and of the shaping device 10 also takes place.
  • the control cabinet 23 there is the control for the necking device 20 and, if applicable, the cooling device 9, a feed device (not shown) for the pipe on which necking is to be carried out, the shaping device 10 and further necessary machines, which are combined with the necking device 20 will.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
EP97114167A 1996-10-01 1997-08-16 Dispositif et procédé pour la formation de collerettes latérales sur corps creux Withdrawn EP0839590A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19640494 1996-10-01
DE1996140494 DE19640494A1 (de) 1996-10-01 1996-10-01 Vorrichtung und Verfahren zur Aushalsung von Hohlkörpern

Publications (1)

Publication Number Publication Date
EP0839590A1 true EP0839590A1 (fr) 1998-05-06

Family

ID=7807573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97114167A Withdrawn EP0839590A1 (fr) 1996-10-01 1997-08-16 Dispositif et procédé pour la formation de collerettes latérales sur corps creux

Country Status (2)

Country Link
EP (1) EP0839590A1 (fr)
DE (1) DE19640494A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008038889A1 (de) 2008-08-13 2010-02-25 Hilliger Gmbh & Co. Kg Verfahren und Vorrichtung zum Aushalsen dickwandiger Rohre

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10130944A1 (de) * 2001-06-27 2003-01-23 Preussag Ag Minimax Verfahren zum Herstellen von Sprinkler-Strangrohren und Sprinkler-Strangrohr
DE102024114440B3 (de) * 2024-05-23 2025-05-08 Sönke Clausen System und Verfahren zum Aushalsen einer Öffnung eines Hohlkörpers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6959281A (en) * 1980-04-30 1981-11-05 Vaughan, G.E. Producing t fitting flanges in tubes
JPS609519A (ja) * 1983-06-29 1985-01-18 Hitachi Ltd 分岐管の成形方法
JPS62267014A (ja) * 1986-05-13 1987-11-19 Hitachi Plant Eng & Constr Co Ltd 管の分岐部形成加工機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6959281A (en) * 1980-04-30 1981-11-05 Vaughan, G.E. Producing t fitting flanges in tubes
JPS609519A (ja) * 1983-06-29 1985-01-18 Hitachi Ltd 分岐管の成形方法
JPS62267014A (ja) * 1986-05-13 1987-11-19 Hitachi Plant Eng & Constr Co Ltd 管の分岐部形成加工機

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 124 (M - 383) 29 May 1985 (1985-05-29) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 145 (M - 693) 6 May 1988 (1988-05-06) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008038889A1 (de) 2008-08-13 2010-02-25 Hilliger Gmbh & Co. Kg Verfahren und Vorrichtung zum Aushalsen dickwandiger Rohre
DE102008038889B4 (de) * 2008-08-13 2015-09-24 Hilliger Gmbh Sonderformstückbau Vorrichtung zum Aushalsen dickwandiger Rohre

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Publication number Publication date
DE19640494A1 (de) 1998-04-02

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