US3923092A - Apparatus arranged after a continuous casting installation for releasing a thread-like casting connection - Google Patents

Apparatus arranged after a continuous casting installation for releasing a thread-like casting connection Download PDF

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Publication number
US3923092A
US3923092A US437496*A US43749674A US3923092A US 3923092 A US3923092 A US 3923092A US 43749674 A US43749674 A US 43749674A US 3923092 A US3923092 A US 3923092A
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US
United States
Prior art keywords
casting
dummy bar
thread
cropped end
claw
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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
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US437496*A
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English (en)
Inventor
Georg Bollig
Willi Simons
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SMS Siemag AG
Original Assignee
Schloemann Siemag AG
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Publication date
Application filed by Schloemann Siemag AG filed Critical Schloemann Siemag AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/08—Accessories for starting the casting procedure
    • B22D11/081—Starter bars
    • B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots

Definitions

  • ABSTRACT An apparatus arranged following a continuous casting installation for the purpose of releasing a thread-like casting connection of a dummy bar head, wherein a dummy bar receiver has associated therewith a rotary or turning mechanism with a substantially formlocking receiving opening for a cropped end of the strand possessing the thread-like casting connection.
  • the present invention relates to a new and improved construction of apparatus arranged after a continuous casting installation for releasing a thread-shaped or thread-like casting connection from a dummy bar head of a dummy bar.
  • the mushroom-shaped withdrawing head is coupled by a rotary or turning connection with the dummy bar head.
  • a mechanism fordecoupling the turning or rotary connection which mechanism possesses a rotatable receiving means with a form opening as the throughpassage for a head formed in accordance with the opening and which head is provided with a stepped shaft of the mushroom-shaped withdrawing head.
  • This type of casting connection is expensive and complicated, and the specially fabricated mushroom-shaped withdrawing head is destroyed after each pour or casting.
  • the release mechanism which is guided by clamping at the strand and equipped with a pivoting device actuated by a pressurized medium. The connection and the release mechanism are not sufficiently operationally reliable under the encountered rough casting conditions. Finally, the connections cannot be used when working with small casting shapes or formats.
  • connection portion is thread-like cast.
  • dummy bar head is equipped with appropriate internal threading.
  • Yet a further significant object of the present invention aims at the provision of a new and improved construction of apparatus for releasing a thread-like casting connection for detaching the dummy bar head from the casting in a safe and reliable manner, with a minimum of effort, and without any appreciable danger to the operator.
  • a dummy bar receiver has associated therewith a rotary or turning mechanism with a substantially form-locking receiving opening for a cropped end of the strand or casting exhibiting the thread-like casting connection.
  • the casting connection can be rapidly screwed-out without the need to carry out any manual work. The danger of accidents associated with manual work is therefore effectively eliminated.
  • a rotary head of the rotary mechanism is constructed as a claw or claw means which is open at one side, in the lateral opening of which there can be introduced and removed the cropped end. Due to lateral displacement of the dummy bar, the cropped end arrives at the claw opening and after threading-out the casting screw such cropped end falls into a scrap chute or scrap container.
  • the claw or claw means can be equipped with a fall-out or dropout safety device.
  • the fall-out safety device there can be provided, at the side flanks of the claw opening, recesses corresponding to the so-called pointed edge position or pyramid position of the cropped end, i.e., a position of the cropped end wherein the diagonal connecting diametrically oppositely situated corners of the cropped end are located in said recesses, wherein the cropped end has associated therewith a stop which is effective in a direction opposite to the screw-out direction, and which stop limits movement of the cropped end in the vertical fall-out position.
  • the fall-out safety device of the claw is constructed as a laterally open cover and is freely pivotably mounted at the same axis of rotation as the rotary head.
  • the pivotal movement of a sleeve defining the cover and provided with a projection is limited by stops associated therewith between a position which closes the claw opening in the fall-out direction and a position which opens such claw opening.
  • FIG. 1 schematically illustrates the arrangement of a release apparatus or mechanism at the end of a dummy bar receiving means
  • FIG. 2 schematically illustrates another arrangement of release apparatus or mechanism with dummy bar receiving means displaceable parallel to the run-out roller table or roller assembly;
  • FIG. 3 illustrates a release apparatus or mechanism viewed in the direction of the cast strand
  • FIG. 4 is a plan view of the release mechanism depicted in FIG. 3;
  • FIGS. a to 50 show different working positions of a rotary claw with pivotable cover
  • FIG. 6 is a longitudinal sectional view through a casting connection which is to be released or disconnected by means of the apparatus of this development.
  • a casting screw or threaded bolt 7 is threaded into the dummy bar head 6 and the screw or bolt head 8 has steel cast therearound.
  • this strand is cropped or cut by means of the cutter or shearing device 2 directly behind the screw or bolt head 8 around which there has been cast the steel or other metal being cast.
  • a rotary or turning mechanism 9 with a positive or form-locking opening, that is to say, a claw 9' which is accommodated to the cross-section of the billet, as shown in FIGS. 1 and 3.
  • a rotary or turning mechanism 9 with a positive or form-locking opening, that is to say, a claw 9' which is accommodated to the cross-section of the billet, as shown in FIGS. 1 and 3.
  • the cropped end 30 of the strand 3 remains at the region of the rotary or turning mechanism 9.
  • the cropped end 30 of the casting or strand is rotated by the rotary or turning mechanism 9 until the casting screw 7 is screwed out of the head 6' of the dummy bar 6 and the connection is released.
  • the croped end 30 then can be removed from the rotary mechanism 9 and conveyed away.
  • the dummy bar 6 is equipped with a new casting screw 7 and is introduced into the continuous casting installation for the next pour or casting.
  • a dummy bar receiver 10 is arranged in front of a cooling bank or bed 11 and transversely displaceable at the region of a rotary or turning mechanism 12 arranged laterally of the run-out table 1.
  • FIGS. 3 and 4 there will be recognized the details of a preferred construction of rotary or turning mechanism. It consists of a housing 13 in which there is mounted at rollers 16 a rotary or turning head equipped with a sprocket gear rim or sprocket wheel 14.
  • the rotary or turning head 15 possesses an opening in the form of the claw 9'.
  • Flanged to the housing 13 is a worm gearing or drive 17 which is connected with a drive shaft or drive arrangement 18.
  • a sprocket gear or wheel 19 is secured to a shaft 17 of the worm drive 17, and which sprocket gear 19 drives the sprocket gear or wheel 14 through the agency of a chain 20 or equivalent structure.
  • the rotary or turning head 15 is constructed as a hollow sleeve 15' which is open at one end. This sleeve is provided at its end with inserts 21 accommodated to the profile or shape of the cast billet 3 and such inserts possess the shape of claws and can be exchanged when changing the shape of the cast strand or billet.
  • inserts 21 accommodated to the profile or shape of the cast billet 3 and such inserts possess the shape of claws and can be exchanged when changing the shape of the cast strand or billet.
  • the thread hole or bore 6" in the dummy bar 6 In order that the axis of rotation of the rotary or turning head 15, during changes in the format or shape of the casting, coincides with the axis of the connecting screw or bolt 7, the thread hole or bore 6" in the dummy bar 6 always must be provided with a constant spacing from the support surface.
  • the housing 13 can be, however, arranged so as to be adjustable in elevation in order that the screw or bolt axis for all formats or shapes can be centrally arranged at the casting
  • An impact or stop lever 24 is mounted at a stationary bracket or console 23, this stop lever 24 being retained by means of a spring 25 or the like in a substantially horizontal position.
  • the rotary or turning head 15 After screwing out the connecting screw or bolt 7 the rotary or turning head 15 is turned somewhat past the fall-out or dropout position and subsequently again turned back therein.
  • the cropped end 30 of the casting comes to bear against the end face or end 24' of the lever 24 and is rotated out of the recesses 22 into the position depicted in FIG. 3 which is parallel to or in alignment with the drop-out or fall-out opening 21' of the inserts 21, through which such cropped end is capable of dropping out without obstruction into a not particularly illustrated scrap trough or the like.
  • the rotational movement of the cropped end 30 of the casting In the screw-out direction the rotational movement of the cropped end 30 of the casting is not hindered by the impact or stop lever 24, since the cropped end rocks such stop lever 24 downwardly out of the rotational or turning region.
  • the dummy bar receivers 5 and 10 are equipped with an upper covering serving as an anti-rotation securing means 10' (FIG. 4) which secures the dummy bar 6 against being rotatably entrained.
  • FIGS. 5a to 50 there is illustrated in principle a rotary or turning head 26 equipped with a laterally opened covering or cover 29 serving as the fall-out securing device, the opening of which has been generally indicated by reference character 29'.
  • This covering or cover 29 encloses the rotary head 26 and possesses the same rotational axis as such rotary or turning head and is freely pivotable between two stops 27 and 28.
  • a cropped or sheared end 30 of the casting is pushed from the side into the claw means 31 of the rotary or turning head 26 and rotated in counterclockwise direction, as best recognized by referring to FIG. 5a.
  • the covering 29 is entrained until a projection 32 impacts against the stop 28 and the fallout or dropout region 40 is closed, as best seen by referring to FIG. 5b.
  • the rotary or turning head 26 is rotated in the opposite direction, with the result that the projection 32 of the covering or cover 29 is entrained up to the region of the other stop 27 and the fall-out direction or opening 40 for the cropped end 30 is freed, as best seen by referring to FIG. 50.
  • An apparatus arranged after a continuous casting installation for releasing a thread-like casting connection from a dummy bar head of a dummy bar comprising a dummy bar receiver means, a rotary mechanism associated with the dummy bar receiver means, said rotary mechanism being equipped with a receiving opening for a cropped end of the casting which possesses the thread-like casting connection, said rotary mechanism incorporating means for carrying out a relative rotational movement between the cropped end of the casting and the dummy bar head of the dummy bar in order to disconnect the thread-like casting connection of the cropped end of the casting from the dummy bar head of the dummy bar, said means for carrying out said relative rotational movement of the rotary mechanism comprises a rotary head constructed as claw means, said claw means having a lateral opening defining said receiving opening; the cropped end of the casting being insertable into and retractable from said lateral opening, said claw means being provided with fall-out safety means for the cropped end of the casting, said claw means having side flanks provided with recess
  • An apparatus arranged after a continuous casting installation for releasing a thread-like casting connection from a dummy bar head of a dummy bar comprising a dummy bar receiver means, a rotary mechanism associated with the dummy bar receiver means, said rotary mechanism being equipped with a substantially form-locking receiving opening for a cropped end of the casting which possesses the thread-like casting connection, said rotary mechanism comprising a rotary head constructed as claw means, said claw means having a lateral opening defining said form-locking receiving opening, the cropped end of the casting being insertable into and retractable from said lateral opening, said claw means being provided with fall-out safety means for the cropped end of the casting, and wherein the fall-out safety means of the claw means is constructed as a laterally opened cover provided with a projection and freely pivotable about the same rotational axis as the rotary head, the pivot movement of the cover being limited by associated stops between a position closing the opening of the claw means in the fall-out direction and a position opening such opening of the

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
US437496*A 1973-02-02 1974-01-28 Apparatus arranged after a continuous casting installation for releasing a thread-like casting connection Expired - Lifetime US3923092A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2305038A DE2305038A1 (de) 1973-02-02 1973-02-02 Einer stranggiessanlage nachgeordnete vorrichtung zum loesen einer angiessverbindung

Publications (1)

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US3923092A true US3923092A (en) 1975-12-02

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US437496*A Expired - Lifetime US3923092A (en) 1973-02-02 1974-01-28 Apparatus arranged after a continuous casting installation for releasing a thread-like casting connection

Country Status (10)

Country Link
US (1) US3923092A (enrdf_load_stackoverflow)
JP (1) JPS5238928B2 (enrdf_load_stackoverflow)
AT (1) AT334556B (enrdf_load_stackoverflow)
BE (1) BE810232A (enrdf_load_stackoverflow)
CA (1) CA1019535A (enrdf_load_stackoverflow)
DE (1) DE2305038A1 (enrdf_load_stackoverflow)
ES (1) ES423117A1 (enrdf_load_stackoverflow)
FR (1) FR2216042B1 (enrdf_load_stackoverflow)
GB (1) GB1463361A (enrdf_load_stackoverflow)
IT (1) IT1007192B (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55132257U (enrdf_load_stackoverflow) * 1979-03-14 1980-09-19
CH660139A5 (de) * 1983-05-11 1987-03-31 Concast Service Union Ag Verfahren zum abtrennen des schopfendes eines gegossenen stranges mittels einer schere in einer stranggiessanlage.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544639A (en) * 1946-01-14 1951-03-13 Ingram X Calhoun Hydraulic tongs
US3025733A (en) * 1959-07-13 1962-03-20 Soodnizin Nicho Vladimirovitch Automatic stationary rotary tongs
US3612148A (en) * 1969-07-02 1971-10-12 United States Steel Corp Method and apparatus for removing aborted castings from a continuous-casting machine
US3698469A (en) * 1970-04-23 1972-10-17 United Eng Foundry Co Dummy bar handling system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544639A (en) * 1946-01-14 1951-03-13 Ingram X Calhoun Hydraulic tongs
US3025733A (en) * 1959-07-13 1962-03-20 Soodnizin Nicho Vladimirovitch Automatic stationary rotary tongs
US3612148A (en) * 1969-07-02 1971-10-12 United States Steel Corp Method and apparatus for removing aborted castings from a continuous-casting machine
US3698469A (en) * 1970-04-23 1972-10-17 United Eng Foundry Co Dummy bar handling system

Also Published As

Publication number Publication date
ES423117A1 (es) 1976-04-16
FR2216042A1 (enrdf_load_stackoverflow) 1974-08-30
CA1019535A (en) 1977-10-25
GB1463361A (en) 1977-02-02
JPS5238928B2 (enrdf_load_stackoverflow) 1977-10-01
ATA80574A (de) 1976-05-15
JPS49110539A (enrdf_load_stackoverflow) 1974-10-21
BE810232A (fr) 1974-05-16
DE2305038A1 (de) 1974-08-29
AT334556B (de) 1976-01-25
FR2216042B1 (enrdf_load_stackoverflow) 1977-09-16
IT1007192B (it) 1976-10-30

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