EP0792702B1 - Appareil pour la formation de collerette dans des pièces - Google Patents

Appareil pour la formation de collerette dans des pièces Download PDF

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Publication number
EP0792702B1
EP0792702B1 EP97103051A EP97103051A EP0792702B1 EP 0792702 B1 EP0792702 B1 EP 0792702B1 EP 97103051 A EP97103051 A EP 97103051A EP 97103051 A EP97103051 A EP 97103051A EP 0792702 B1 EP0792702 B1 EP 0792702B1
Authority
EP
European Patent Office
Prior art keywords
plunger
locking
stamp
block
rod
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 - Lifetime
Application number
EP97103051A
Other languages
German (de)
English (en)
Other versions
EP0792702A2 (fr
EP0792702A3 (fr
Inventor
Manfred Scholte
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.)
Witulski Kathrin
Original Assignee
Witulski Kathrin
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 Witulski Kathrin filed Critical Witulski Kathrin
Publication of EP0792702A2 publication Critical patent/EP0792702A2/fr
Publication of EP0792702A3 publication Critical patent/EP0792702A3/fr
Application granted granted Critical
Publication of EP0792702B1 publication Critical patent/EP0792702B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • 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
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49428—Gas and water specific plumbing component making
    • Y10T29/49442—T-shaped fitting making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49428—Gas and water specific plumbing component making
    • Y10T29/49446—Ferrule making or reforming

Definitions

  • the invention relates to a device for production of neckings in workpieces, in particular in pipes or for pipe branches.
  • FR-A-2245431 is a mandrel for necking known from pipes, the body of which in his Outside diameter of the size of the neck to be necked in the pipe corresponds.
  • the drag area of the essentially cylindrical mandrel is in the middle Area formed as part of a cylindrical surface, whose surface lines in the pulling position parallel run to the longitudinal axis of an elongated hole in the tube. The remaining part of the drawing surface is opposite to the cylinder surface reset.
  • Another one Embodiment of the mandrel is the drawing surface from two intersecting cylinder jacket surfaces, see above that four symmetrical sectors arise.
  • the essential The disadvantage of the known mandrel is that that the mandrel does not attack the workpiece done evenly over the entire drawing area, so that only an uneven deformation is achieved and there is a risk of cracking.
  • the object of the present invention is therein a novel device for the production of Specify neckings in workpieces that are simple and works reliably.
  • the drawing shows a device 2 for production of neckings in pipes with a base plate 4, on the a first frame 6 fixed and a second, designed as a slide Frame 8 slidably arranged (see arrow 9) are, cf. Fig. 1.
  • a first plate 10 preferably circular plate, rotatably arranged on of several cylindrical bowl-shaped outer forms on a circle 12 different sizes are arranged, cf. Fig. 2.
  • a second plate 14 preferably circular plate, rotatably arranged on which on a Circle several cylindrical, the outer shapes 12 assigned Inner molds 16 are arranged, whose outer diameter is smaller than the inside diameter of the outer molds.
  • the outer shapes 12 and inner shapes 16 can also each all be of the same design, and only one Outer shape and an inner shape may be provided.
  • the inner mold 16 By moving the carriage 8 in the drawing (Fig. 1) To the left, the inner mold 16 can be in the working position downward open cylindrical shell-shaped form be pushed.
  • the outer shape is slightly larger than one Half cylinder and has a bending hole 18 in the cylinder jacket on whose inner hole edge is designed as a bending edge 20 (see also Fig. 4), on which the necking by tightening by means of a stamp is formed, which is explained in more detail below becomes.
  • the inner shape 16 is also with a hole in the cylinder jacket formed (see also FIG. 3), which as the receptacle 22nd for a stamp 24, with the help of the neck on the tube by tightening on the bending edge 20 of the outer shape 12 is formed, which is explained in more detail below.
  • the external shapes can also be on Carriage and the inner forms can be arranged stationary.
  • Reference numerals 30 and 32 denote threaded bores on the end face in the outer and inner forms 12 and 16 for attachment on the plates 10 and 14 by means of not shown Bolts.
  • the stamp 24 is shown in more detail in FIGS. 5a to 5c. It is designed as a hollow body, the outer surface as the surface of two intersecting vertically the same Large cylindrical surfaces 34, 36 is formed, the one Cylinder surface 34 vertical and the other cylinder surface 36 is arranged horizontally.
  • the cutting edge 38 is rounded, see. in particular Fig. 5a.
  • In the cylindrical round Top 39 is an elongated hole 40 with a circular arc in the middle Narrow sides 42, 44 are formed.
  • the elongated hole 40 has all around an undercut 46.
  • the slot 40 with the undercut 46 is used to accommodate one in the Fig. 5a to 5c, not shown, with reference to FIGS. 6a and 6b below locking device described in more detail.
  • the height of the stamp is equal to the radius of the cylinder 36 or chosen slightly larger than this radius so the necking becomes exactly circular.
  • the stamp 24 described has the great advantage that due to its shape an even distribution of the pulling forces on the tubular workpiece because the stamp is always on the workpiece. Thereby the risk of material breakage is avoided.
  • 6a and 6b show this from the inner mold 16, the External mold 12 and the stamp 24 existing tool on one Actuator 50.
  • the actuating device 50 comprises a locking and unlocking device 52, which via an adapter 54 or also directly with a piston rod of the hydraulic cylinder 28 connected is.
  • the locking and unlocking device 52 includes an after semicircular, disc-shaped locking element at the top 56 and two locking elements 58, 60 which, as shown, preferably in the form of circular disks are.
  • the locking member 56 is on a rectangular tie rod 62 arranged with the adapter 54 or the piston rod of the hydraulic cylinder 28 connected or for example how is screwed shown.
  • the locking elements 58, 60 are on a holder 64 by means of molded pendulum rods 66, 68 suspended like a pendulum.
  • the holder 64 is slidable arranged on the tie rod 62.
  • a limiting pin 70 arranged on the pull rod 62 limits the displacement of the holder 64 on the drawbar 62 down.
  • the holder 64 is also in a link guide 72 Unlocking member 74 slidably arranged, which one Guide slot 76 for a guide pin flattened on both sides 78, which is firmly in the backdrop guide 72 of the holder 64 is arranged.
  • the unlocking member 74 has inclined surfaces 80, 82 on the top and bottom.
  • the guide slot 76 opens at both ends in bores 81, 83, whose diameter is chosen so that rotation of the unlocking member 74 around the guide pin 78 is possible.
  • the lower end of the locking lever 90 can additionally have a weight 94 for weighting, preferably as Handle is formed.
  • the move Locking elements 58, 60 on the circular surface of the locking member 56 outwards and under the undercut 46 of the elongated hole 40 of the punch 24. If now the pull rod 62 is moved upwards with the locking member 56, the locking member 56 locks the locking elements 58 and 60 under the undercut 46, what the locking elements dashed lines in Fig. 6a is.
  • the stamp 24 is carried along taken above for bending or flanging the in the bending hole 18 of the edge of the hole protruding from the outer shape of the tubular workpiece 96 for the purpose of producing a neck.
  • To unlock the stamp 24 is after manufacture the necking and raising of the stamp the inner shape 16 pulled out of the workpiece and the outer shape 12 and the tie rod 62 by means of the hydraulic cylinder 28 moved down until the still through the locking member 56 and the locking elements 58, 60 locked Stamp 24 is placed in the inner mold 16 and by further Lowering the tie rod 62 and that by putting on Setting guide 72 caused the locking member to move away 56 of the locking elements 58 and 60 the locking elements can swing back in solid position shown in FIG. 6a and the locking lever 90 relative to the locking block 84 is moved down and with its locking pin 88 in the Blind hole 86 of the locking block 84 engages automatically.
  • the additional weight 94 supports this snapping.
  • the locking element can be pulled up by pulling the pull rod 62 56 and the locking elements 58, 60 the stamp 24 and are pulled out of the inner mold 16.
  • the device is now ready for the next drawing process.
  • the stamp described can advantageously be made neckings that have the same diameter as the tubular workpiece.
  • the neckings can also have a diameter arbitrarily smaller than that Diameter of the tubular workpiece.
  • the described device 52 for locking and unlocking is not only for stamps for the production of pipe neckings, but also with stamps for the production of Neckings in other workpieces, for example plate-shaped Workpieces, suitable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Punching Or Piercing (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (6)

  1. Dispositif de formage de collets extérieurs dans des pièces d'oeuvre, avec un outil présentant un profil de pliage pour la réception de la pièce d'oeuvre et un poinçon convexe pour le soyage par le profil de pliage, et avec un dispositif d'actionnement pour le poinçon,
    caractérisé en ce que le dispositif d'actionnement (50) présente une tige de traction (62), pouvant être actionnée par un dispositif moteur (28), sur laquelle est disposé un dispositif (52) de réception, verrouillage et déverrouillage du poinçon (24) dont la surface externe est réalisée sous la forme d'une surface (34, 36) d'un cylindre vertical et d'un cylindre de même dimension coupant horizontalement ce cylindre vertical, les arêtes de coupe (38) des deux cylindres étant arrondies.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que le poinçon (24) présente centralement sur sa face supérieure (39) ronde cylindrique un trou oblong (40) pour une liaison active avec le dispositif d'actionnement (50).
  3. Dispositif selon la revendication 1,
    caractérisé en ce que le profil de pliage présente un profil interne (16) cylindrique, dans lequel est formé un trou (22) pour l'introduction du poinçon (24) et au-dessus duquel une pièce d'oeuvre (96) tubulaire à travailler peut coulisser, et un profil externe (12) en portion de cylindre ouvert vers le bas, dont le rayon intérieur est plus grand d'au moins l'épaisseur de la pièce d'oeuvre (96) tubulaire à travailler que le rayon extérieur du profil interne et qui est équipé d'un trou de pliage (18), dont l'arête interne de trou est réalisée sous forme d'arête de pliage (20), coopérant avec le poinçon (24) et peut coulisser au-dessus du profil interne (16) et de la pièce d'oeuvre (96).
  4. Dispositif selon la revendication 3,
    caractérisé en ce que l'enveloppe du profil externe (12) est légèrement plus grande que l'enveloppe d'un demi-cylindre.
  5. Dispositif selon la revendication 1 ou 3,
    caractérisé en ce que plusieurs profils internes (16) différents et plusieurs profils externes (12) adjoints à ceux-ci sont disposés face à face sur des plateaux tournants (14, 10) verticaux parmi lesquels au moins un plateau tournant est monté coulissant sur un chariot (8).
  6. Dispositif selon l'une des revendications 1, 2 ou 3,
    caractérisé en ce que la hauteur du poinçon est égale au rayon du cylindre (36) ou légèrement plus grande que ce rayon.
EP97103051A 1996-02-27 1997-02-26 Appareil pour la formation de collerette dans des pièces Expired - Lifetime EP0792702B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19607311 1996-02-27
DE19607311A DE19607311A1 (de) 1996-02-27 1996-02-27 Vorrichtung zur Herstellung von Aushalsungen in Werkstücken

Publications (3)

Publication Number Publication Date
EP0792702A2 EP0792702A2 (fr) 1997-09-03
EP0792702A3 EP0792702A3 (fr) 1997-11-05
EP0792702B1 true EP0792702B1 (fr) 2000-08-16

Family

ID=7786551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103051A Expired - Lifetime EP0792702B1 (fr) 1996-02-27 1997-02-26 Appareil pour la formation de collerette dans des pièces

Country Status (5)

Country Link
US (1) US6021571A (fr)
EP (1) EP0792702B1 (fr)
AT (1) ATE195446T1 (fr)
CZ (1) CZ56697A3 (fr)
DE (3) DE19607311A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2343981A1 (de) * 1973-08-31 1975-03-20 Messer Griesheim Gmbh Verfahren und vorrichtung zum aushalsen von rohren

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2368394A (en) * 1943-05-03 1945-01-30 Young Radiator Co Apparatus for flanging openings in tube type headers
US2507859A (en) * 1947-10-13 1950-05-16 Ladish Drop Forge Co Method of making pipe fittings
DE2511491C2 (de) * 1975-03-15 1983-07-21 Ing. Edwin Rothenberger Schweisstechnik- U. Industrie-Bedarf, 6000 Frankfurt Aushalsvorrichtung für das Formen von zylindrischen Ansätzen auf dem Umfang von Rohrleitungen etc.
US4106322A (en) * 1976-09-22 1978-08-15 Evgeny Nikolaevich Moshnin Press for pressing pipe fittings
IT1116912B (it) * 1977-04-04 1986-02-10 Verrina Spa Macchina per la formazione di colletti imbutiti in collettori cilindrici di lamiera anche di grande spessore
JPS609519A (ja) * 1983-06-29 1985-01-18 Hitachi Ltd 分岐管の成形方法
JPS60244422A (ja) * 1984-05-17 1985-12-04 Hitachi Ltd 分岐管継手の製造装置
US4676088A (en) * 1985-06-10 1987-06-30 Hitachi, Ltd. T-joint manufacturing apparatus
DE3744046C2 (de) * 1987-12-24 1994-11-24 Westaflexwerk Gmbh & Co Kg Verfahren und Vorrichtung zum Aushalsen von dünnwandigen Blechrohren
US5829468A (en) * 1993-10-06 1998-11-03 Toto Ltd. Valve device using pipes and method of manufacturing it

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2343981A1 (de) * 1973-08-31 1975-03-20 Messer Griesheim Gmbh Verfahren und vorrichtung zum aushalsen von rohren

Also Published As

Publication number Publication date
EP0792702A2 (fr) 1997-09-03
US6021571A (en) 2000-02-08
DE59702173D1 (de) 2000-09-21
CZ56697A3 (en) 1997-11-12
EP0792702A3 (fr) 1997-11-05
DE29612422U1 (de) 1996-12-19
DE19607311A1 (de) 1997-08-28
ATE195446T1 (de) 2000-09-15

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