US3744684A - Stopper holder for a casting ladle - Google Patents

Stopper holder for a casting ladle Download PDF

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Publication number
US3744684A
US3744684A US00192960A US3744684DA US3744684A US 3744684 A US3744684 A US 3744684A US 00192960 A US00192960 A US 00192960A US 3744684D A US3744684D A US 3744684DA US 3744684 A US3744684 A US 3744684A
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US
United States
Prior art keywords
stopper
rocker
pivot
link
holder
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
US00192960A
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English (en)
Inventor
J Heimgartner
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.)
Sulzer AG
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Sulzer AG
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Filing date
Publication date
Application filed by Sulzer AG filed Critical Sulzer AG
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Publication of US3744684A publication Critical patent/US3744684A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/20—Stopper-rod operating equipment

Definitions

  • Casting ladles having a bottom outlet have usually been provided with a stopper which has been displaceable vertically within a holder through the intermediary of a stopper rod and by means of an actuating element.
  • Such holders have also been used with casting pans and smelting furnaces.
  • the known stopper holders and the actuating elements have generally had approximately constant transmission ratio between the travel of the stopper and the travel of the actuating ele ments. Because of this, it has been virtually impossible to make a fine adjustment of the casting stream.
  • the invention provides a holder in which a stopper rod is fastened in an articulated manner to a holding column outside the casting ladle by means of two rocker-links spaced vertically apart from one another.
  • the rod is guided during the raising and lowering of the stopper and is characterized in that an elbowlever, i.e., a bell crank, or toggle lever, is linked to one of the two rocker-links and connected to an actuating element for moving the stopper-rod.
  • the stopper-head shall lift practically precisely along the axis of the run-out of casting metal. This is obtained with the holder in that the pivot arm of the upper rocker-link is smaller than that of the lower link.
  • the lengths of the two pivot arms are related to one another in inverse propor' tion to their distance from the lower edge of the stopper.
  • FIG. 1 illustrates a holder of the invention wherein a bell crank and an actuating element are shown by solid lines in the closed position of the stopper, and are shown by dot-dash lines with the stopper lifted;
  • FIG. 3 illustrates a view taken on line III-lll of FIG. 1; and i .
  • FIG. 4 illustrates a schematic representation of the travel of the stopper-rod and of the rocker-links during a certain lift h.
  • the casting ladle I which is generally made of sheetsteel is depending on the temperature and the aggressiveness of the molten material to be cast, providedor not with a lining 2 of ceramic material, for example Al- 0
  • the bottom 3 of the ladle 1 has an outlet opening and a screw 9 which fastens the rod 7 in place relative vide one pulling element and at least one stop in the lever system through which the articulation points of the bell crank are in the closed position of the stopper held in a straight line at least.
  • the pulling element compensates the weight of the actuating lever, and thus prevents the stopper from unlocking itself.
  • the holder includes aholding column 16 which is pushed into a guideway 17 on the outside of the ladle 1 so as to be vertically adjustable relative to the ladle and a screw 18 which fastens the column 16 in place relative to the ladle I.
  • the column 16 has a fork-like shape and mounts a pair of mounting bolts 27 therein to define pivot points 12 and 13. As shown in FIGS. 2 and 3, each bolt 27 passes through the column 16 through a sleeve 25 and has screw threaded ends which project out of the sleeve 25 and column 16. Each sleeve 25 is mounted in the column 16 and has reduced ends which project from the column 16.
  • the screw threaded ends of the bolts 27 have washers 26 mounted thereon as well as threaded nuts 19 which serve to secure the bolts 27 in place.
  • rocker-link 14 The two upper pivot-points I0 and 12 are connected with one another by an upper rocker-link 14; while a lower rocker-link 15 serves to connect the lower points 11 and 13.
  • Both rocker-links l4, 15 are made of two flat irons pushed on the protrusions at the pivot points 10 and II of the sleeve 8 and on the reduced ends of the sleeves 25, respectively.
  • the two rocker-links l4, 15 together form, along with the sleeve 8 connecting them and with the pivot points 10 to 13, an articulated quadrilateral for guiding the stopper-rod 7 during liftmg. a
  • a lever system engages with the point 13 of the lower link 15 for the operation of the stopper 6.
  • This lever system consists of an actuating lever 20 which merges at its lower end in the region of the pivot point 13 into a fork-like connecting piece 21 (see FIG. 3).
  • the free end of the connecting piece 21 has a pivot point 22 which once more consists of a sleeve 25, a bolt 27 and nuts 19 with washers 26, and a connecting part 23 is secured thereto.
  • the connecting part 23 is able to pivot and is, in turn, connected at the other end with the FIG. 2 illustrates a view taken on line II-Il of FIG.
  • the connecting part 21 and the part 23 form a bell crank or toggle lever with the pivot point 22 which is, as well known characterized by an articulation, the socalled knee, between two one-arm levers; the other ends each being mounted in a further link, in this case forming the pivot points 13 and 30.
  • the working of the toggle lever is that when a force is applied to the knee joint, the force produced by its component acting perpendicularly to the line connecting the outer joints in the direction of this connecting line increases as the angle between this connecting line and the one-arm lever becomes smaller.
  • a spring 28 is stretched between the upper end of the holding column 16 and the actuating lever 20 as a pulling element to continuously'pull the lever 20 upward.
  • the stopper 6 is pressed into its position of rest against the bottom outlet 4.
  • the part 23 is pulled against a stop 29 disposed in the bottom of the fork of the connecting part 21 and suited to the lever system in such a way that, in the position of rest, the pivot points 22, 13 and 30 lie on a straight line at least as shown in FIG. 1, the pivot points 22, 13, 30 form an angle of less than 180 which lies with point 13 as the vertex and which opens to the upper right as viewed when the stopper 6 is lifted.
  • pivot point 22 it is self-evidently possible for the pivot point 22 to be set above the straight line through the points 13 and 30. In this way, and by the aid of the spring 28 and the stop 29, self-locking of the stopper 6 in its closed position is obtained so that the stopper 6 cannot be lifted by an upward or some other force. A supplementary locking of the stopper is thus not necessary.
  • the lifting of the stopper 6 is accomplished by pressing down the lever 20, which can be done by hand or else by some suitable mechanical, hydraulic, pneumatic or electric or electromagnetic drive.
  • the lever 20 By being pivoted in this way about the fixed point l2,
  • the lever 20 moves against the force of the spring 28 into the position shown by dot-dash lines in FIG. 1.
  • the points 20, 30, 10 and 11, and also the stopper 6, are thus displaced into the position also shown by dot-dash lines.
  • the upward lift of the stopper 6 can be limited by a stop 31 in the form of a cylindrical pin between the two flat-irons of the link 15 against which the connecting part 23 abuts. Because of the illustrated bell crank or toggle-lever action, relatively great forces act initially with a small movement of the knee-lever when the stopper is closed, so that even stoppers which stick can be, opened easily. Also, during the initial phase of opening, the travel of the point 30, and thus the lift effected at the stopper 6, is relatively small as compared with the angle through which the lever 20 is turned, so that fine metering of the casting stream is obtained.
  • a stopper holder for a casting ladle having a bottom outlet comprising:
  • rocker links each pivotally connected at one end to said column and at an opposite end to said sleeve, said links being vertically spaced from each other;
  • a stopper holder as set forth in claim 1 which further includes a pulling means for biasing said actuating element in a closing direction and a stop for limiting a closing motion of said holder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Transmission Devices (AREA)
US00192960A 1970-12-04 1971-10-27 Stopper holder for a casting ladle Expired - Lifetime US3744684A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1796670A CH531903A (de) 1970-12-04 1970-12-04 Stopfenhalterung für eine Giesspfanne

Publications (1)

Publication Number Publication Date
US3744684A true US3744684A (en) 1973-07-10

Family

ID=4429423

Family Applications (1)

Application Number Title Priority Date Filing Date
US00192960A Expired - Lifetime US3744684A (en) 1970-12-04 1971-10-27 Stopper holder for a casting ladle

Country Status (8)

Country Link
US (1) US3744684A (OSRAM)
AT (1) AT310366B (OSRAM)
CH (1) CH531903A (OSRAM)
FR (1) FR2116510B1 (OSRAM)
GB (1) GB1321759A (OSRAM)
IT (1) IT943699B (OSRAM)
NL (1) NL145158B (OSRAM)
SE (1) SE379161B (OSRAM)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985262A (en) * 1974-10-11 1976-10-12 Nautamix Patent A.G. Vessel provided with a recessed locking lid
US4139050A (en) * 1976-08-18 1979-02-13 Mannesmann Aktiengesellschaft Control of discharge outlet of a casting vessel
US5312090A (en) * 1992-12-14 1994-05-17 Cmi International Apparatus and method for controlling a stopper rod of a bottom pouring vessel
US5372355A (en) * 1992-09-24 1994-12-13 Leybold Aktiengesellschaft Tap closure for a vacuum-induction melting and casting furnace
US20100200620A1 (en) * 2009-02-09 2010-08-12 Ajf, Inc. Slag control shape device with l-shape loading bracket
CN103706782A (zh) * 2014-01-15 2014-04-09 浙江杭机铸造有限公司 一种座包浇口杯拔塞装置
CN113275548A (zh) * 2021-05-24 2021-08-20 巢湖云海镁业有限公司 一种用于镁合金浇注移液过程中的控液装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196829A (en) * 1978-07-07 1980-04-08 Seaton Engineering Company Stopper throttling system
AT403773B (de) * 1992-11-11 1998-05-25 Voest Alpine Stahl Donawitz Metallurgisches gefäss

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985262A (en) * 1974-10-11 1976-10-12 Nautamix Patent A.G. Vessel provided with a recessed locking lid
US4139050A (en) * 1976-08-18 1979-02-13 Mannesmann Aktiengesellschaft Control of discharge outlet of a casting vessel
US5372355A (en) * 1992-09-24 1994-12-13 Leybold Aktiengesellschaft Tap closure for a vacuum-induction melting and casting furnace
US5312090A (en) * 1992-12-14 1994-05-17 Cmi International Apparatus and method for controlling a stopper rod of a bottom pouring vessel
US20100200620A1 (en) * 2009-02-09 2010-08-12 Ajf, Inc. Slag control shape device with l-shape loading bracket
US8210402B2 (en) 2009-02-09 2012-07-03 Ajf, Inc. Slag control shape device with L-shape loading bracket
CN103706782A (zh) * 2014-01-15 2014-04-09 浙江杭机铸造有限公司 一种座包浇口杯拔塞装置
CN113275548A (zh) * 2021-05-24 2021-08-20 巢湖云海镁业有限公司 一种用于镁合金浇注移液过程中的控液装置

Also Published As

Publication number Publication date
FR2116510B1 (OSRAM) 1975-08-29
IT943699B (it) 1973-04-10
FR2116510A1 (OSRAM) 1972-07-13
SE379161B (OSRAM) 1975-09-29
NL145158B (nl) 1975-03-17
AT310366B (de) 1973-09-25
CH531903A (de) 1972-12-31
GB1321759A (en) 1973-06-27
DE2064164A1 (de) 1972-07-06
NL7100123A (OSRAM) 1972-06-06

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