EP0140988A1 - Mécanisme de chargement pour la manipulation de tubes pour presses à refouler - Google Patents

Mécanisme de chargement pour la manipulation de tubes pour presses à refouler Download PDF

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Publication number
EP0140988A1
EP0140988A1 EP83110730A EP83110730A EP0140988A1 EP 0140988 A1 EP0140988 A1 EP 0140988A1 EP 83110730 A EP83110730 A EP 83110730A EP 83110730 A EP83110730 A EP 83110730A EP 0140988 A1 EP0140988 A1 EP 0140988A1
Authority
EP
European Patent Office
Prior art keywords
tongs
crank
charging device
transport
pliers
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
EP83110730A
Other languages
German (de)
English (en)
Other versions
EP0140988B1 (fr
Inventor
Horst Endter
Herbert Süther
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.)
SMS Hasenclever Maschinenfabrik GmbH
Original Assignee
SMS Hasenclever Maschinenfabrik GmbH
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 SMS Hasenclever Maschinenfabrik GmbH filed Critical SMS Hasenclever Maschinenfabrik GmbH
Publication of EP0140988A1 publication Critical patent/EP0140988A1/fr
Application granted granted Critical
Publication of EP0140988B1 publication Critical patent/EP0140988B1/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
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools

Definitions

  • the charging devices previously used to manipulate the tubes on upsetting presses of the type mentioned consist of a roller table with V-shaped rollers as a means of receiving the tubes to be manipulated, which are mounted on a liftable and lowerable bridge and can be driven in a reversible manner.
  • the roller table is fed by a support grate, which bridges the space between the induction coils for heating the pipe ends and the upsetting press and is arranged at an angle to the upsetting press.
  • the pipe resting on the roller table is aligned by vertically adjusting the bridge to the center of a die engraving and axially moved in and out of the die by the rollers.
  • pliers - at least two arranged over the pipe length - are provided as means for receiving the pipes, the three of which are arranged one above the other in a vertical plane at a vertical distance from the engravings and at the same time transversely to the axis of the pipes and can be moved in the same direction in a closed path, with the highest and lowest point of the path vertically one above the other at a distance corresponding to that of the engravings in the dies, the movement drive briefly interrupts the movement sequence when the highest and lowest path point is reached, and the lower rest position of the upper one Pliers have a congruent axial pipe position to a tube clamped in the upper engraving of the dies, that furthermore the upper and lower of the three pliers additionally perpendicular to the path as the normal plane opposite to each other by distances greater than the axial die length towards the dies and from di esen are movable away, and that the pliers are controlled in the upward part of the movement in the open
  • the upper of the three moving tongs take over the tubes heated at one end from a supply position which, as is known, can be the end of an inclined support grate. Transporting them over the support grate can lead to an axial change in the position of the pipes and makes it necessary to readjust the pipes axially in the ready position. In addition, the noise generated when the pipes roll on the support grid is undesirable.
  • a square movement path of the transport tongs in which the vertical path sections correspond to the vertical spacing of the engravings in the dies and the interruption points in the movement sequence (rest positions of the transport tongs) in the middle of the horizontal path sections are provided, since this facilitates the insertion or removal of the pipes into or from the engravings of the dies and the stationary pliers (holding pliers).
  • the quadrangular trajectory is - as the invention provides as an advantageous solution - achieved by the fact that the transport tongs are seated on walking beams which, as is known, form the coupling of two parallel link cores designed as wheel crank drives, an auxiliary crank stored in a main crank being four times as large as the wheel drive Executes speed with respect to the main crank and the radius of the auxiliary crank is about half the arc height of a quarter circle segment in the main crank circle.
  • the stepping transmission has a transmission branching with branches in a transmission ratio of 1: 1 to the walking beam drives for the main movement of the transport tongs and to the slide drives for the transverse movement is arranged downstream of the upper and lower transport tongs and to the swivel drives for the transfer tongs, so that all movements of the tongs take place from a single drive. This ensures the timed sequence of all movements of the pliers, costly sequential controls that require safety times are not required.
  • the pivot levers of the transfer pliers form a coupling between double-link articulated quadrilaterals, when the pliers are arranged on coupling extensions and the drive linkages are designed as angle levers, the second legs of which in turn form oscillations of crank-link articulated quadrilaterals with driven cranks.
  • a coupling curve can be reached for the pliers movement, which runs parallel to the table surface in the area of the storage table for the pipes, so that the placing of the pipes on the table and the start-up of the transfer pliers can be carried out without particularly precise timing or safety times.
  • the charging device is constructed from two transport tongs mechanics 1, two transfer tongs mechanics 2 and three holding tongs mechanics 3, which are in each case identical to one another.
  • the charging device is driven by a motor 4, which drives the stepping gear 6 via a continuously variable transmission 5.
  • a branching gear 7 which drives a second branching gear 9 via a cardan shaft 8.
  • Branched off from the branching gear 7 are two outputs, each of which drives a motion gear 12 via cardan shafts 10 and 11, which serve to drive the transport tongs mechanics 1.
  • a base frame 13 combines the components into one unit.
  • the diagram shown in Fig. 2 shows the operation of the charging device in the step sequences a to g.
  • the manipulated pipes are designated by 15, namely 15 1 a first, 15 15 a second, 15 3 a third and 15 4 a fourth of successive pipes, the different, successive positions of which are identified by ⁇ , ⁇ , ⁇ , ⁇ and ⁇ are designated.
  • - 16o is the upper one
  • - 16m is the middle
  • - 16u is the lower of three stacking tongs arranged one above the other of a set of at least two sets arranged along the pipe length -.
  • 17 denotes one of at least two transfer pliers arranged over the tube length
  • 18o / 18u denotes pairs of holding pliers.
  • 2a 15 1 ⁇ represents the position of a first pipe 15 in the position ⁇ , that is the position of the pipes on the storage table after the pipes have left the heating system.
  • Transfer pliers 17 grip the pipe 15 1 and bring it into the position ⁇ .
  • the transport tongs 160, m and u move along the first half B 1/2 of their movement path into their high position, in which the transport tongs 16o are in alignment with the position ⁇ of the pipes, as can be seen from FIG. 2b. Both the transfer tongs 17 and the transport tongs 16 remain in this position ⁇ for a short while and the transfer tongs 17 open while the transport tongs 16o simultaneously close.
  • the transport tongs 16 with the pipe 15 1 gripped by the upper transport tongs 16o now move along the second half B 2/2 of their path of movement into their lower position, in which the transport tongs 16o are aligned with the upper holding tongs 18o and an upper engraving of a die 19/20 stand.
  • the vertically divided die is in the open position so that the pipe 15 1 can move in the gap between the die halves.
  • the transport tongs 16o are moved towards the die 19/20, so that the end of the tube 15 1 enters the upper engraving to the extent necessary for upsetting the end.
  • the transfer tongs 17 swivel back into their starting position.
  • the transport tongs remain in this position for a short time While the holding tongs 18 and the halves of the die 19/20 close and the transport tongs 16 open, the position 1 shown in FIG. 2c being reached. Meanwhile, the first upsetting operation is carried out in the die 19/20, the pipe 15 1 being clamped between the clamping jaws 20 of the die 19/20 and being supported by the holding tongs 18, the transport tongs 16 again travel along the first half B 1/2 of their path of movement in their up position, the upper transport tongs 16o again moving away from the die 19/20 into the position for taking over a next pipe 15 2 , which is simultaneously pivoted from the position ⁇ into the position ⁇ by the transfer tongs 17.
  • the tubes 15 1 and 15 2 are clamped by the jaws 20 of the die and in the engravings of the die part 19 the tube 15 1 is fully compressed and the tube 15 2 pre-compressed.
  • the transfer tongs 17 pivot another tube 15 3 from position d to position ⁇ and the transport tongs 16 move to the first one Half B 1/2 of the movement path in the up position, where they remain for a short while, during which the transport tongs 16 are closed, the transfer tongs 17 and the holding tongs 18 are opened.
  • the die 19/20 is opened, the transport tongs 16 move again to the lower position on the second half B 2/2 of their movement path and the transfer tongs 17 pivot back into their starting position according to the tube position ⁇ .
  • the pipe 15 3 is moved from position ⁇ into the upper engraving according to position ⁇ , the pipe 15 2 from the upper into the lower engraving according to position he and the pipe 15 1 with simultaneous axial movement of the lower transport tongs 16u from the lower engraving in introduced the position ⁇ .
  • FIG. 2g shows this - the pipe 15 3 is pre-compressed in the upper engraving and the pipe 15 is finished-compressed in the lower engraving.
  • the holding tongs are closed, the transfer tongs spend a new tube 15 4 from the ⁇ - to the ⁇ position, the transport tongs 16 are opened and move back along the first half B 1/2 of the movement path into their high position.
  • the fully compressed tube 15 1 is released and removed in a manner not shown.
  • the workflow can be controlled so that the transfer pliers 17 only feed a new pipe every second full movement cycle of the transport tongs 16 and accordingly only each time every second pipe position is occupied. This can be done in the simplest way by blocking the supply of pipes to position ⁇ every second cycle and reducing the heating cycle of the heating system accordingly.
  • FIGS. 3 to 13 The details of the configuration of the charging device can be found in FIGS. 3 to 13.
  • the stepping gear 6 is driven via a continuously variable transmission 5, with the transmission 5 the working cycle of the charging device being adapted to that of the heating system for the pipe ends and that of the upsetting press.
  • the main component of the charging device are the transport tongs mechanisms 1, one of which is shown on a larger scale in FIGS. 3 and 4.
  • the motion gear 12 of the transport tongs mechanism 1 is driven via a cardan shaft 10.
  • an intermediate wheel seated on the shaft 23 drives two gear wheels 24.
  • Each of these gears 24 forms a main crank with a shaft 25 rotatably mounted eccentrically in it.
  • the shaft 25 is provided with a pinion 26, which rolls on an internal ring gear 27 fixedly arranged in the housing 22. Since the internal ring gear 27 has four times the number of teeth than the pinion 26, the shaft 25 rotates four times when the gear 24 has rotated once.
  • the shaft 25 carries eccentric pins 28, 29 at both ends, the eccentricity of which is dimensioned such that the center of the eccentric pins 28, 29 follow a path B during the rotation of the toothed wheels 24, as shown in FIG. 9.
  • the eccentricity corresponds to approximately half the arc height in the quarter circle segment above the circumferential circle of the shaft 25, so that the path B corresponds to a square with somewhat rounded corners.
  • the movement path B is divided into two halves B 1/2 and B 2/2, and between the two halves the movement is interrupted for a short while in order to close or open of pliers with the pliers and pipes at a standstill in the respective positions ⁇ , ⁇ , ⁇ , ⁇ and ⁇ .
  • This interruption of movement is brought about by the stepping gear 6, which is connected between the drive 4 and the branching gear 7 and 9.
  • This step gear is described in more detail with reference to FIGS. 5 to 7.
  • the stepping gear is driven by the motor 4 via the continuously variable transmission 5, the output of which drives a shaft 33 at the input of the stepping gear 6 via V-belts 31 and V-belt pulley 32.
  • the crankshaft 39 With an eccentricity that makes up about a third of the eccentricity of the crankshaft 39 in the gear 35, the crankshaft 39 carries a crank pin 41 with an attached roller, and engages with the crank pin 41 in a groove of a loop lever 42, which is coaxial with the bearing pin 36 mounted shaft 43, so that the shaft 43 is rotated intermittently with its driven wheel 44.
  • the position of the crank pin 41 which results in each case as a function of the rotation of the gear wheel 35 is shown in FIG. 6 rend the speed ratio n 1 / n 2 established by the stepping gear 6 between the gear 35 behind the input and the shaft 43 at the output of the stepping gear 6 is shown in FIG. 7. It can be seen that the stepper transmission switches to a standstill in the full revolution of the driven wheel 44 of the stepper transmission 6 after every half revolution, which is about a tenth of the total revolution time.
  • a crankshaft 45 is driven by the branching gear 7 at the same speed as the shaft 21 and moves a circular sector rocker 47 pivotably mounted at 48 via a connecting rod 46.
  • This circular sector rocker 47 is provided with a toothing 49 above the circular arc and reversibly rotates a pinion 50 which engages in the toothing 49 on a shaft 51.
  • the shaft 51 rotates a capstan drum 53 via an articulated shaft 52 which is an endless rope guided over a tensioning pulley 54 emotional.
  • the bearing 55 of the capstan drum 53 and the yoke 56 supporting the tensioning roller 54 are connected by a bridge 57, which is part of the walking beam 30 and at the same time carries the middle transport tongs 16 m of the three transport tongs 16, and two slide guides 58 and 59 for an upper slide 60 which carries the upper transport tongs 16o and a lower carriage 61 which carries the lower transport tongs 16u.
  • the carriage 60 is attached to the upper run and the carriage 61 is fastened to the lower run of the rope between capstan 53 and tensioning pulley 54, and the two carriages 60 and 61 are equally moved in opposite directions by the rope runs, the upper transport tongs 16o being lowered a pipe 15 to the center of the upper engraving of the die 19/20 the tube 15 is moved into the die 19/20 and the lower transport tongs 16u are also axially removed from the die 19/20 when the tube 15 is lowered from the center of the lower engraving of the die 19/20.
  • the effective lengths of the radius on the crankshaft 45 and the length of the connecting rod 46 By adjusting the effective lengths of the radius on the crankshaft 45 and the length of the connecting rod 46, the end position of the tubes 15 in the die 19/20 and the path of the axial displacement of the tubes 15 can be changed.
  • FIG. 7 Another branch of the branching gear 7 and also present on the branching gear 9 is a crankshaft 62 driven at the same speed as the shaft 21 and the crankshaft 45, which moves a bell crank formed by the two legs 64 and 65 via a coupling rod 63.
  • the angle lever 64/65 is mounted on a pin 66 which is flanged to the housing 67 of the stepping gear 6 and the branching gear 7.
  • the pin 66 and the bearing of the crankshaft 62 form the standing joints on the housing 67 serving here as a web frame for the four-link chain formed from the crank 62, the coupling rod 63 and the angle lever arm 64 as a steering rocker arm.
  • the angle lever arm 65 which carries out an oscillating movement, is the drive rocker in a further four-link chain, which has the pin 66 and a second pin 69 carried by a bracket 68 on the housing 67 as standing joints, also a steering rocker 70 and a coupling 71, with a coupling extension 72 to the paddock 71, the one Transfer tongs 17 which carry a transfer tongs mechanism 2.
  • the transfer pliers 17 of the second transfer pliers mechanism 2 are moved over the corresponding branch on the branching gear 9.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Metal Extraction Processes (AREA)
EP83110730A 1982-11-04 1983-10-27 Mécanisme de chargement pour la manipulation de tubes pour presses à refouler Expired EP0140988B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823240689 DE3240689A1 (de) 1982-11-04 1982-11-04 Chargiervorrichtung fuer das manipulieren von rohren von stauchpressen
DE3240689 1983-11-04

Publications (2)

Publication Number Publication Date
EP0140988A1 true EP0140988A1 (fr) 1985-05-15
EP0140988B1 EP0140988B1 (fr) 1986-12-30

Family

ID=6177258

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110730A Expired EP0140988B1 (fr) 1982-11-04 1983-10-27 Mécanisme de chargement pour la manipulation de tubes pour presses à refouler

Country Status (5)

Country Link
US (1) US4619574A (fr)
EP (1) EP0140988B1 (fr)
JP (1) JPS59104236A (fr)
AT (1) ATE24426T1 (fr)
DE (1) DE3240689A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034266A1 (de) * 1989-10-31 1991-05-02 Showa Aluminium Co Ltd Vorrichtung zum automatischen formen von zugespitzten enden an unbearbeiteten rohren

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8607727U1 (de) * 1986-03-20 1986-05-22 Hoesch Maschinenfabrik Deutschland Ag, 4600 Dortmund Vorrichtung zum Herstellen von gepreßten Formteilen od. dgl.
DE102009006044B4 (de) * 2009-01-24 2016-09-29 Hans-Erich Maul Handhabungsmodule
CN102397979B (zh) * 2011-12-08 2013-07-31 济南沃德汽车零部件有限公司 卧式电镦机的自动上料装置
DE102014016522A1 (de) 2014-03-31 2015-10-15 Sms Meer Gmbh Stauchpresse und Verfahren zum Stauchpressen eines Endes sich längserstreckender Werkstücke
CN110695284B (zh) * 2019-09-18 2024-03-26 浙江展邦机械有限公司 冷镦机
CN112338116A (zh) * 2020-11-29 2021-02-09 河南智圆轴承科技有限公司 轴承环胚自动成型装置
CN113580647B (zh) * 2021-07-23 2023-12-22 宁波天相机械制造有限公司 分体式超精密满排列滚针结构
CN114406137B (zh) * 2021-12-31 2023-04-18 江苏玖泰电力实业有限公司 一种水泥杆内部钢筋加工用液压墩头机
CN114669703B (zh) * 2022-03-25 2022-11-29 北京航空航天大学 一种精锻机伸长量随动协作定量控制方法
CN116786752B (zh) * 2023-08-29 2023-11-07 山西天宝集团有限公司 一种低温高强度风电法兰的锻造装置及其方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075924B (de) * 1958-07-31 1960-02-18 Eumuco Ag Fuer Maschb Werkstueckfoerdervorrichtung fuer horizontale Schmiedemaschinen
DE1096167B (de) * 1958-09-02 1960-12-29 Eumuco Ag Fuer Maschb Einrichtung zum induktiven Erwaermen und zum Transport von Stangen an Schmiedemaschinen
US3834213A (en) * 1973-02-12 1974-09-10 Hanzler Mfg Corp Workpiece translation mechanism for transfer die press
DE2715966C3 (de) * 1977-04-09 1980-03-27 Hatebur Umformmaschinen Ag, Basel (Schweiz) Einrichtung zum automatischen Transport von Werkstücken an mehrstufigen Quertransportpressen
US4255075A (en) * 1978-11-01 1981-03-10 Premier Forging Press Automation, Inc. Loader
DE2943769A1 (de) * 1979-10-30 1981-05-14 Rigobert Dipl.-Ing. 5000 Köln Schwarze Vorrichtung und steuerung zur entnahme einzelner rohre aus einem vorratsbehaelter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034266A1 (de) * 1989-10-31 1991-05-02 Showa Aluminium Co Ltd Vorrichtung zum automatischen formen von zugespitzten enden an unbearbeiteten rohren
DE4034266C2 (de) * 1989-10-31 1998-01-08 Showa Aluminium Co Ltd Vorrichtung zum Transport und Zuführen von Rohren

Also Published As

Publication number Publication date
US4619574A (en) 1986-10-28
ATE24426T1 (de) 1987-01-15
JPS59104236A (ja) 1984-06-16
DE3240689A1 (de) 1984-05-24
JPH0237811B2 (fr) 1990-08-27
EP0140988B1 (fr) 1986-12-30

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