EP0083577A1 - Dispositif de serrage d'extrémités de tubes dans une presse hydraulique à refouler les extrémités de tubes - Google Patents

Dispositif de serrage d'extrémités de tubes dans une presse hydraulique à refouler les extrémités de tubes Download PDF

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Publication number
EP0083577A1
EP0083577A1 EP83730001A EP83730001A EP0083577A1 EP 0083577 A1 EP0083577 A1 EP 0083577A1 EP 83730001 A EP83730001 A EP 83730001A EP 83730001 A EP83730001 A EP 83730001A EP 0083577 A1 EP0083577 A1 EP 0083577A1
Authority
EP
European Patent Office
Prior art keywords
piston
cylinder unit
crosshead
holding device
holding
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
EP83730001A
Other languages
German (de)
English (en)
Other versions
EP0083577B1 (fr
Inventor
Herbert Jansen
Richard Gerretz
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Priority to AT83730001T priority Critical patent/ATE12899T1/de
Publication of EP0083577A1 publication Critical patent/EP0083577A1/fr
Application granted granted Critical
Publication of EP0083577B1 publication Critical patent/EP0083577B1/fr
Expired 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/039—Means for controlling the clamping or opening of the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/06—Swaging presses; Upsetting presses

Definitions

  • the present invention relates to a holding device for the pipe end pieces in a hydraulic pipe end press, which has a C-shaped frame in which the pipe end is held between the upper and lower die halves, the lower die half being received in the press table and the upper die half in the crosshead and the crosshead can be moved against the press table with the aid of at least one piston-cylinder unit which applies the holding force.
  • the upsetting of the tube ends is generally carried out with a tube end upsetting press of the type described above, the upsetting of the tube inserted and held in the die halves being carried out with the aid of an upsetting device provided on the rear of the C-frame.
  • This consists of a hydraulic cylinder acting in the longitudinal direction of the pipe; the force required for the upsetting process is applied via a stepped mandrel to the end face of the pipe end piece in its axial direction.
  • the closing of the holding device necessary for holding the pipe end can be divided into two movement processes, one of which serves to move the die halves apart far enough for lateral insertion of the pipe and the other movement serves to actually hold the pipe end in an exciting manner.
  • both movement processes are carried out by a piston-cylinder unit which is large in accordance with the necessary holding force and which must have a stroke which is adapted to the opening path of the die halves.
  • the present invention has for its object to provide a holding device that allows a reduction in the cycle time for loading and unloading of the holding device with less construction and cost reduction.
  • a holding device which is characterized by a toggle lever transmitting the holding force in its extended position, one end of which is articulated to the piston of the piston-cylinder unit and the other end of which is articulated to the crosshead and the knee joint is connected to another power drive for kinking and stretching the knee lever.
  • the movement processes described at the outset are divided into two device components, namely a toggle lever for rapid mechanical movement of the crosshead with the upper die half and the exciting holding of the pipe end with the aid of the conventional piston-cylinder unit.
  • This enables the use of short-stroke, high-performance pressure cylinders for the application of the clamping force and weak and therefore less expensive power drives for the tension-free travel of the crosshead with the upper die half.
  • a favorable embodiment of the solution according to the invention is characterized in that for two toggle levers arranged symmetrically next to one another a common power drive is provided for the synchronous bending and stretching of both toggle levers.
  • the power drive for kinking and stretching the knee lever (s) is a piston-cylinder unit.
  • This piston-cylinder unit can be dimensioned weak, since it only has to overcome the displacement force of the crosshead, essentially its own weight.
  • a favorable embodiment of the device according to the invention provides that the piston-cylinder unit is arranged between the two piston-cylinder units applying the holding force with the same direction of action and the piston force is connected via one each with the knee joint of each toggle lever this and on the other hand with the piston rod of the piston-cylinder unit connected pull and push rods is branched.
  • This proposal largely uses mechanical elements that require little maintenance with high operational reliability and are not only inexpensive but also robust.
  • the use of two short-stroke clamping-piston-cylinder units in connection with the piston-cylinder unit arranged in between for the adjustment of the articulated lever allows a compact, space-saving construction with favorable introduction of the forces. It is even conceivable and advantageous to apply different hydraulic pressures to the tensioning piston-cylinder units in order, for. B. compress the actual upsetting area more firmly by higher pressure.
  • the toggle lever or arms are preferably secured in their extended position against buckling. This can be done, for example, in that the articulation points of the toggle lever are placed in such a way that when the holding force is applied, the toggle lever is overstretched against a stop, so that there can be no unintentional buckling of the toggle lever.
  • the C-press frame 1 is designed in a known manner. Inside the opening of the C-frame, the press table 2 is mounted below and the crosshead 3 above. The lower die half 5 is connected to the press table 2, the upper die half 4 is attached to the crosshead 3. The crosshead 3 is vertically displaceable in guides, not shown, so that in the closed position of the die halves (FIG. 2) the halves complement each other to form a stepped bore.
  • a pair of hydraulic tensioning cylinders 6 and 7 are fastened to the C-shaped frame 1, each cylinder being fastened to the frame 1 by means of a crossmember 8 (FIG. 3).
  • the two upper levers 9 and 10 of the toggle lever are articulated on the piston rods 11 and 12 of the piston-cylinder units 6 and 7, and the lower levers 13 and 14 of the toggle lever are articulated on the crosshead, the articulation points of the toggle levers 9, 13 and 10, 14 are designated 15 and 16.
  • the piston-cylinder unit 17 with the piston rod 18, which serves to drive the toggle levers is mounted vertically in the middle.
  • the knee joints 15 and 16 of the toggle levers are connected to one another via push-pull rods 19, 20, the free ends of the push-push rods 19, 20 being fastened to a common joint 21, on which the piston rod 18 of the piston-cylinder unit 17 is also located is articulated.
  • the compression mandrel 22 (the drive means of which are not shown) is axially aligned with the split die.
  • the stretched toggle lever By introducing hydraulic fluid through the inlet openings 24 and 25 of the piston-cylinder units 6 and 7, the stretched toggle lever covers the remaining way until the upper die half 4 is placed against the pipe end and by further loading of the piston-cylinder units 6 and 7 stretched the pipe. If necessary, the piston rod 18 or the entire piston-cylinder unit 17 can be readjusted in accordance with the path required for the clamping.
  • the compression mandrel 22 is moved in the direction of arrow 26 by means (not shown) in order to upset the pipe end clamped between the upper and lower die halves 4 and 5.
  • the crosshead 3 is returned to its open position in the reverse order.
  • the compression mandrel 22 is returned to its starting position, the pressure acting on the piston-cylinder unit 6 and 7 is removed and the annular surfaces on the piston rod side of the piston-cylinder unit are pressurized via the openings 26 and 27, respectively.
  • the pistons 11 and 12 move into their upper end position and the clamping force on the pipe end is released.
  • the piston rod 18 is guided downward with the articulation point 21, as a result of which the push-pull rods 19 and 20 spread and cause the toggle levers 9, 13 and 10, 14 to buckle. This briefly raises the crosshead 3 with the upper die half 4 and the tube end press is open for removal and reloading.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press Drives And Press Lines (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
  • Jigs For Machine Tools (AREA)
EP83730001A 1982-01-06 1983-01-04 Dispositif de serrage d'extrémités de tubes dans une presse hydraulique à refouler les extrémités de tubes Expired EP0083577B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83730001T ATE12899T1 (de) 1982-01-06 1983-01-04 Haltevorrichtung fuer die rohrendstuecke in einer hydraulischen rohrendenpresse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3200361 1982-01-06
DE3200361A DE3200361C2 (de) 1982-01-06 1982-01-06 Haltevorrichtung für die Rohrendstücke in einer hydraulischen Rohrendenpresse

Publications (2)

Publication Number Publication Date
EP0083577A1 true EP0083577A1 (fr) 1983-07-13
EP0083577B1 EP0083577B1 (fr) 1985-04-24

Family

ID=6152760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83730001A Expired EP0083577B1 (fr) 1982-01-06 1983-01-04 Dispositif de serrage d'extrémités de tubes dans une presse hydraulique à refouler les extrémités de tubes

Country Status (4)

Country Link
EP (1) EP0083577B1 (fr)
JP (1) JPS58119426A (fr)
AT (1) ATE12899T1 (fr)
DE (1) DE3200361C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1097756A1 (fr) * 1999-11-04 2001-05-09 Financière Robolix, Société à Responsabilité Limitée Machine à former des extrémités de tubes, et dispositif de formage comportant deux desdites machines à former
CN100484746C (zh) * 2006-12-26 2009-05-06 西安重型机械研究所 非开挖钻杆加厚液压机
CN102989818A (zh) * 2011-12-31 2013-03-27 中山市奥美森工业有限公司 一种椭圆管机的夹紧装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6892560B2 (en) 2000-06-16 2005-05-17 Toyota Jidosha Kabushiki Kaisha Mold clamping apparatus and mold clamping method
JP4706889B2 (ja) * 2000-11-01 2011-06-22 東洋製罐株式会社 缶胴成形装置
CN102896211A (zh) * 2011-12-30 2013-01-30 中山市奥美森工业技术有限公司 一种圆管夹具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2037604A (en) * 1933-06-30 1936-04-14 Thompson Prod Inc Electrical metal gathering machine
DE835246C (de) * 1950-06-30 1952-03-31 Rheinische Roehrenwerke A G Selbsttaetige Einspannvorrichtung an Stauchpressen fuer die Bearbeitung der Enden langgestreckter Koerper, beispielsweise der Enden von Rohren
DE844241C (de) * 1950-05-31 1952-07-17 Eumuco Ag Fuer Maschb Nachgiebige Spannvorrichtung fuer Stangen, Rohre u. dgl.
US3078906A (en) * 1960-05-27 1963-02-26 Western Electric Co Machine for flanging tubular members
DE1240370B (de) * 1962-08-22 1967-05-11 David Etchells Machinery Ltd Horizontale Schmiede- bzw. Stauchmaschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2871734A (en) * 1956-02-29 1959-02-03 Western Electric Co Apparatus for heading tubular members
GB1579423A (en) * 1976-07-16 1980-11-19 Mannesmann Ag Hydraulic presses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2037604A (en) * 1933-06-30 1936-04-14 Thompson Prod Inc Electrical metal gathering machine
DE844241C (de) * 1950-05-31 1952-07-17 Eumuco Ag Fuer Maschb Nachgiebige Spannvorrichtung fuer Stangen, Rohre u. dgl.
DE835246C (de) * 1950-06-30 1952-03-31 Rheinische Roehrenwerke A G Selbsttaetige Einspannvorrichtung an Stauchpressen fuer die Bearbeitung der Enden langgestreckter Koerper, beispielsweise der Enden von Rohren
US3078906A (en) * 1960-05-27 1963-02-26 Western Electric Co Machine for flanging tubular members
DE1240370B (de) * 1962-08-22 1967-05-11 David Etchells Machinery Ltd Horizontale Schmiede- bzw. Stauchmaschine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1097756A1 (fr) * 1999-11-04 2001-05-09 Financière Robolix, Société à Responsabilité Limitée Machine à former des extrémités de tubes, et dispositif de formage comportant deux desdites machines à former
FR2800651A1 (fr) * 1999-11-04 2001-05-11 Financ Robolix Machine a former des extremites de tubes, et dispositif de formage comportant deux desdites machines a former
CN100484746C (zh) * 2006-12-26 2009-05-06 西安重型机械研究所 非开挖钻杆加厚液压机
CN102989818A (zh) * 2011-12-31 2013-03-27 中山市奥美森工业有限公司 一种椭圆管机的夹紧装置
CN102989818B (zh) * 2011-12-31 2015-11-18 奥美森智能装备股份有限公司 一种椭圆管机的夹紧装置

Also Published As

Publication number Publication date
DE3200361A1 (de) 1983-07-14
DE3200361C2 (de) 1984-08-30
ATE12899T1 (de) 1985-05-15
JPS58119426A (ja) 1983-07-15
EP0083577B1 (fr) 1985-04-24

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