US3838730A - Automatic control device for variable width continuous casting mold - Google Patents

Automatic control device for variable width continuous casting mold Download PDF

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Publication number
US3838730A
US3838730A US00388073A US38807373A US3838730A US 3838730 A US3838730 A US 3838730A US 00388073 A US00388073 A US 00388073A US 38807373 A US38807373 A US 38807373A US 3838730 A US3838730 A US 3838730A
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Prior art keywords
signal
short side
short sides
continuous casting
linked
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US00388073A
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English (en)
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T Nagaoka
M Maruyama
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SMS Concast AG
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Concast 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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/168—Controlling or regulating processes or operations for adjusting the mould size or mould taper

Definitions

  • the present invention relates to a control device for automatically controlling the size of a mold of continuous casting machines depending on a desired molding size.
  • an object of this invention is to provide .a control device which is capable of automatically controlling the distance between the short sides of the mold as well as automatically defining the centering, thereby eliminating the abovementioned drawbacks.
  • FIG. 1 is a perspective view of the mold
  • FIG. 2 showsthe actuating means for actuating the short sides of the mold and a circuit diagram of an automatic control
  • FIG. 3 illustrates the order by which the short sides of the mold move
  • FIG. 4 is a circuit diagram of the sequence logic circuit of the automatic control unit.
  • FIG. 5 illustrates the operation of the logic circuit of FIG. 4.
  • the short sides and 2b have at their upper and lower sides a moving means and a position detector.
  • the moving device is actuated by the output signal of the detector, in order to move the short sides 2a and 2b sequentially as shown in FIG. 3 thereby giving a determined distance and tapering to said short sides and then .to move the central position of the distance between the short edges by a determined amount.
  • the short sides 2a and 2b have initially the lower end distance 1., being tapered. and are then moved so that the lower end distance is I and the upper end distance ac quires the set position I Al; 2. a starting push button is pushed and the upper end of the short side 2a restores to the perpendicularly standing position; 3. and then the short side 2b restores to its perpendicularly standing position; 4. if both short sides are elected per-, pendicularly, the short side 20 is moved in parallel to the position where the lower end distance I is acquired; 5. and then the short side 2b moves in parallel to the position where the distance I is acquired; .6. then only the upper end of the short side 2a is moved to the position equivalent to the set distance 1+ Alto acquire a determined tapering;
  • the above-mentioned operation is carried out automatically by the sequence control device. But, 8) in order to move the center of the distance between the short sides by a, the distance be moved by a in the order of the short side 2a and then the short side 212 by using part of the operation of said sequence control device after the above-mentioned operation has been completed.
  • FIG. 2 shows the construction and circuit diagram of this invention.
  • Automatic controlling mechanism of the 7 short sides 2a and 2b are the same and operate alternatingly to move the short sides to the set position as will be mentioned later; hence only one of the controlling mechanisms is illustrated here. But where it is intended to indicate the right or left side mechanism, a symbol a or b will be attached.
  • the input shaft of the reduction device 5 is linked to the reversible motor 9a through the reduction device 8, and is linked to the rotor of the detector Ila composed of a control transformer through the reduction device 10.
  • the rotor of the detector 11a produces an angular displacement within 180 deg. for the maximum practical revolution of the motor 9a, i.e., for the maximum moving size of the short side 2a, forthe purpose of indicating the position of the short side 2a in terms of the rotor angular position within 180 of the detector lla.
  • the digital setting device 12 for setting the distance across the short sides 2a and 2b comprises a setting device for providing the lower end distance I which will be changed, a setting device 121' for providing the upper distance I Al, and a setting device 12F for providing the lower end distance I prior to the change effected, and the digital set values of each setting device are converted into analog signals through the digital-toanalog converter incorporated and are fed to the zeropoint shifter 13 through the changing contacts 16d, l6t,
  • the zero-point shifter 13 is a device to bring the central position of the distance between the short sides 2a and 2b into alignment with the central position of the drawer next to the mold, and has been so constituted as to rotate the rotors of the control differential generators 13a, 13b belonging to the short sides 2a, 2b in the reverse direction to any angular position by means of a shift lever.
  • the stator coils of the control differential generators 13a, 13b are connected to the common line 18, and the rotor coils are connected, respectively, to the stator coils of the detectors 11a and 11b through the contacts 17a or 17b.
  • the sequence control unit 19 possesses the relay amplifier 14 and the control unit 15 in FIG. 2, these have been expressed as 14a, 14b, 15a, 15b, separately on the right and on the left, for convenience. But these need not be provided separately on the right and on the left; a single relay amplifier 14 and a control unit 15 may be used commonly for the right and left short sides 2a and 2b.
  • the relay amplifier 14a possesses a highspeed relay amplifier 14ah and a low-speed relay amplifier 14a]. Both relay amplifiers 14ah and 14a] receive the rotor output of the detector 11a. When said output is large, the relay amplifer l4ah operates, and when said output is small, the relay amplifier 14a] operates to provide signals to the control unit 15a.
  • the control unit 15a depending on these signals, actuates the motor 9a at a high or low speed in the direction along which the rotor output of the detector 11a becomes 0, and controls to make or break the electromagnetic clutch 7a as well.
  • the contacts 16d, 16!, and 16f open or close in a sequential manner due to the logic circuit mentioned later, and the control device of this invention works as mentioned below.
  • the starter signal S shown in FIG. 4 produces a signal x to close the contact 16f, and a setting signal (l /2) produced by the setting device 12F enters into the detector lla through the common line 18, zeropoint shifter 13, and the contact 17a.
  • the rotor position of the detector lla assumes an angular position corresponding to the upper position of the short side 2a prior to its change; hence a signal So representing onehalf of the difference in clearance between the upper end and the lower end of the short side 2a will be developed on the rotor of the detector 11a and enters into the relay amplifier 14a.
  • the relay amplifier l4ah When the difference in said clearance is too great, the relay amplifier l4ah operates so that the control unit a actuates the motor 9a at a high speed in the direction along which the signal 80 becomes small. When said difference is small, the relay amplifier l4al operates to actuate the motor 90 at a low speed. In this case, since the electromagnetic clutch 7a is being opened the lower end of the short side 20 does not move and only the upper end moves inward so that the short side 2a is erected perpendicularly.
  • the output of the relay amplifier l4al is terminated and the motor 9a is stopped after some idling, so that the short side 2a is stopped at a position erected perpendicularly (FIG. 3, 2)).
  • the completion signal PR is produced to change the opening-closing state of the contact 17a and 17b.
  • Said completion signal PLl enters to the logic circuit shown in FIG. 4, and causes the signal x to assume 0 so that the contact 16f is opened, and causes the production of signal y so that the contact 16d is closed. At this time, the completion signal PLl changes the opening-closing state of the contacts and 17b again, so that the electromagnetic clutches 7a, 7b are closed.
  • the set signal (N2) of the setting device 12D enters to the stator of the detector 11a.
  • a signal S1 representing (I l )/2 will be developed on the rotor, causing the motor 9a to start in the same way as in (2) above.
  • the electromagnetic clutch 7a is being closed, and hence the short side 2a maintaining a perpendicular condition moves to the position of distance I at which the signal S1 acquires 0 (see FIG. 3, 4)).
  • the completion signal PR is developed again to change the opening-closing state of the contacts 17a and 17b.
  • the setting signal (representing (I Al)/2) of the setting device 12T enters to the stator of the detector 11a.
  • a signal S2 to represent Al/2 will be developed on the rotor.
  • the electromagnetic clutch 7a since the electromagnetic clutch 7a is being opened, the upper end only of the short side 2a will move to the position of l Al.
  • the completion signal PR is produced again and the opening-closing state of the contacts 17a and 17b are changed.
  • the contacts 17a and 17b are changed opened and closed for every production of the completion signals PR, PL.
  • the comple- ..tion signal PL further causes the production of the signals x. y. z, in serial mode as well as the production of the starting signal S; for this reason the sequence control unit 19 is equipped with the logic circuit as shown in FIG. 4.
  • numerals 21, 22, 23, 24, 29 and 30 represent AND circuits; 25, 26, 27, and 28 represent OR circuits; 31, 32 and 33 represent NOT circuits; and Tsl and Ts2 denote delay circuits.
  • a starting signal S is fed with the signals x, y, and z being 0 (contacts 16d, 16:, and 16f being open)
  • the AND circuits 21 produce a signal x (contact 16f is closed) since the outputs of NOT circuits are l, and this state is maintained by OR circuit 25 (FIG. 5, c).
  • the AND circuit 22 produces signal y (contact 16d is closed) and this state is maintained by the OR circuit 26, and feeds a 0 signal to the AND circuit 21 through the NOT circuit 31 rendering the signal 1: to be 0 (contact l6fis open) (FIG. 5,d).
  • the signal y also enters to the delay circuit Tsl. But since the delaying time t, of the delay circuit Tsl has been set to be greater than the duration t of the completion signal PLl, the delay circuit Tsl does not produce an output as far as the completion signal NJ is present and produces an output of 1 after the completion signal PLl has been extinguished (FIG. 5, f).
  • the signal z is also fed to the delay circuit Ts2. But since the delaying time of the delay circuit Ts2 has been set to be greater than the duration'r of the completion signal PL2 as in the case of the delay circuit Tsl, the delay circuit Ts2 does not produce an output as far as the completion signal PL2 is present but produces an output 1 after the completion signal PL2 has been extinguished (FIG. 5, g).
  • the output of the delay circuit Ts2 will have already been I, and the output of the AND circuit 30 will acquire l and at the same time, the output of the AND circuit 24 will also acquire 1, so that the signal z is turned to 0 due to the 0 output of the NOT circuit 33 (contact l6t is open) (FIG. 5, e). And due to the OR circuit 28, the output of the NOT circuit 33 is maintained at 0 so far as the completion signal PL3 is present, and hence the signal y is maintained at 0 as well. The logic circuit, in this way, returns to its initial state.
  • the zero-point shifter 13 is turned by means of a shift lever to set, based on the graduation, the amount a by which the central position of the distance between the short sides 2a, 2b moves. Then, for example, the switch connected in parallel with the contact 16! is closed, and the starter push button is pushed with the electromagnetic clutches 7a, 7b closed. Since the contact 17a has already been closed and the contact 17b has been opened due to the completion signal PL3, a signal (1 +131) /2+a will be put into the stator of the detector 11a.
  • a signal of a magnitude equal to (l+Al)/2 0 is produced by the control differential generator 13b and enters to the stator of the detector 11b; the motor 9b is then started causing the short side 2b to move by the amount -a, and is stopped. In this way, the center of the distance between the short sides 2a and 2b is moved by the amount a (FIG. 3, 8)).
  • the distance between the short sides and the taper can be adjusted automatically only be setting the distance between the short sides 2a and 2b by means of the setting device 12, and in addition the central position of the mold is brought automatically into alignment with the central position of the drawing device by meansof the zero-point shifter. In this way, the adjustment of the mold size is performed quickly and accurately.
  • the left and right short sides are controlled alternatingly and automatically by means of a common setting device and a control unit, and the upper and the lower ends of the short sides are separately or simultaneously moved for the purpose of defining any distance between the short sides and tapered angle.
  • the moving means and the control units have simple construction.
  • An automatic controlling device for continuous casting molds comprising moving means linked, re-
  • an electric actuator means linked to said moving means, a short side position setting means, a detector linked to said electric actuator means in order to produce a deviation signal based on the deviation between the setting signal and the short side position of the short side position setting means, and a sequence control means which controls the electric actuator means for the purpose of moving the right and left short sides alternat ingly to the set position

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Position Or Direction (AREA)
  • Continuous Casting (AREA)
US00388073A 1972-08-14 1973-08-13 Automatic control device for variable width continuous casting mold Expired - Lifetime US3838730A (en)

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Application Number Priority Date Filing Date Title
JP47080722A JPS5216449B2 (fi) 1972-08-14 1972-08-14

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US (1) US3838730A (fi)
JP (1) JPS5216449B2 (fi)
DE (1) DE2340768C3 (fi)
FR (1) FR2196212B1 (fi)
GB (1) GB1407643A (fi)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926244A (en) * 1973-03-30 1975-12-16 Concast Ag Method of controlling the cooling rate of narrow side walls of plate molds as a function of the casting taper during continuous casting
US4105059A (en) * 1976-09-27 1978-08-08 Kawasaki Seitetsu K.K. Method of reducing the casting width during continuous casting
US4134441A (en) * 1976-09-27 1979-01-16 Kawasaki Seitetsu K.K. Method of enlarging the strand width of a steel strand during continuous casting
US4245692A (en) * 1978-06-14 1981-01-20 Voest-Alpine Aktiengesellschaft Continuous casting mould suitable for adjustment to various cross sectional formats of a strand
EP0028766A1 (de) * 1979-11-02 1981-05-20 Concast Holding Ag Verfahren und Vorrichtung zum Verändern der Abmessungen eines Stranges beim Stranggiessen
US4270593A (en) * 1978-06-14 1981-06-02 Voest-Alpine Aktiengesellschaft Method of changing the cross sectional format of a strand and a plate mould for carrying out the method
FR2501552A1 (fr) * 1981-03-11 1982-09-17 Mannesmann Ag Agencement pour le reglage de l'inclinaison des petits cotes d'une coquille a brames
US4480976A (en) * 1982-03-03 1984-11-06 Benteler-Werke Ag Adjustable sliding mold for continuous casting installations
US4572277A (en) * 1984-02-29 1986-02-25 Sms Concast Inc. Arrangement for remote adjustment of the dimensions of a strand during continuous casting
US4635704A (en) * 1983-11-23 1987-01-13 Fives-Cail Babcock Method of changing the width of a continuous metal casting without interrupting the casting process
US5242010A (en) * 1991-05-22 1993-09-07 Mannesmann Aktiengesellschaft Method for controlling the taper of narrow faces of a liquid-cooled mold
US5249622A (en) * 1992-04-13 1993-10-05 Stelco Inc. Retrofitted width adjusting mechanism for continuous casting
US20040045697A1 (en) * 2001-05-31 2004-03-11 Daido Tokushuko Kabushiki Kaisha Casting, vertical casting method and vertical casting apparatus
US20040055732A1 (en) * 2002-09-19 2004-03-25 Leblanc Guy Adjustable casting mold
CN100592944C (zh) * 2004-10-13 2010-03-03 西门子Vai金属技术两合公司 用于提高可调式锭模的宽侧壁寿命的方法
US20210347099A1 (en) * 2016-07-07 2021-11-11 Canon Kabushiki Kaisha Manufacturing method and injection molding system

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5115546B2 (fi) * 1971-08-11 1976-05-18
JPS5150362A (en) * 1974-10-29 1976-05-01 Mitsubishi Heavy Ind Ltd Fuirumumiminadono kaishusochi
JPS5154837A (en) * 1974-11-08 1976-05-14 Nippon Steel Corp Renzokuchuzochunochuhenhabakakudaihoho
JPS51124164A (en) * 1975-04-22 1976-10-29 Unitika Ltd Method of elongating polyyepsilonn caproamide films
JPS51136752A (en) * 1975-05-22 1976-11-26 Unitika Ltd Method of elongation of polyyepsilonn caproamide films
DE2649497C2 (de) * 1976-10-28 1982-05-13 Mannesmann AG, 4000 Düsseldorf Vorrichtung zur Anzeige der Konizität einzelner Kokillenwände
JPS54118460A (en) * 1978-03-08 1979-09-13 Japan Steel Works Ltd Apparatus for regenerating trimming tap in thermoplastic film manufacturing apparatus
JPS5717348A (en) * 1980-07-03 1982-01-29 Nippon Steel Corp Method for reducing width of mold in continuous casting
JPS57100029A (en) * 1980-12-16 1982-06-22 Nippon Sheet Glass Co Ltd Manufacture of glass fiber reinforced thermoplastic resin sheet
DE3118986C1 (de) * 1981-05-08 1983-03-10 Mannesmann AG, 4000 Düsseldorf Verfahren zum Verstellen der Seitenwaende einer Kokille
CH664915A5 (de) * 1984-10-26 1988-04-15 Concast Service Union Ag Durchlaufkokille zum stranggiessen von stahlstraengen mit polygonalem querschnitt.
AT381050B (de) * 1985-01-21 1986-08-11 Voest Alpine Ag Verfahren zum stranggiessen sowie einrichtung zur durchfuehrung des verfahrens
JPS6213250A (ja) * 1985-03-05 1987-01-22 Nippon Kokan Kk <Nkk> 連続鋳造中における幅替方法
DE3604818A1 (de) * 1986-02-15 1987-08-20 Mannesmann Ag Motorsteuerung fuer die verstellung einer schmalseitenplatte von stranggiesskokillen fuer metall, insbesondere fuer stahl
DE3908328A1 (de) * 1989-03-10 1990-09-13 Mannesmann Ag Einrichtung zur regelung der konizitaet
EP0448752B1 (de) * 1990-03-27 1995-05-24 Siemens Aktiengesellschaft Einrichtung zur Lageregelung von Maschinenteilen in Hüttenwerken
JP2639758B2 (ja) * 1991-08-01 1997-08-13 新日本製鐵株式会社 スラブ連続鋳造のスタート方法
JPH081048Y2 (ja) * 1991-10-30 1996-01-17 株式会社日本製鋼所 分割式スクリュ
DE4304934A1 (de) * 1993-02-18 1994-08-25 Schloemann Siemag Ag Vorrichtung zur Verstellung von Kokillenschmalseitenwänden

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1125594B (de) * 1957-01-30 1962-03-15 Mannesmann Ag Stranggiesskokille
US3292216A (en) * 1963-06-25 1966-12-20 Concast Ag Adjustable mold for continuous casting installation
US3375865A (en) * 1964-10-26 1968-04-02 Tsnii Chernoj Metallurg Mould for a continuous casting machine
US3439736A (en) * 1965-03-08 1969-04-22 Mannesmann Ag Liquid cooled walled continuous slab casting mold with adjustable tapered walls
US3583473A (en) * 1968-03-19 1971-06-08 Mannesmann Ag Liquid cooled continuous metal casting chill mold
US3710845A (en) * 1970-03-25 1973-01-16 Concast Ag Adjustable continuous casting mold

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1125594B (de) * 1957-01-30 1962-03-15 Mannesmann Ag Stranggiesskokille
US3292216A (en) * 1963-06-25 1966-12-20 Concast Ag Adjustable mold for continuous casting installation
US3375865A (en) * 1964-10-26 1968-04-02 Tsnii Chernoj Metallurg Mould for a continuous casting machine
US3439736A (en) * 1965-03-08 1969-04-22 Mannesmann Ag Liquid cooled walled continuous slab casting mold with adjustable tapered walls
US3583473A (en) * 1968-03-19 1971-06-08 Mannesmann Ag Liquid cooled continuous metal casting chill mold
US3710845A (en) * 1970-03-25 1973-01-16 Concast Ag Adjustable continuous casting mold

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926244A (en) * 1973-03-30 1975-12-16 Concast Ag Method of controlling the cooling rate of narrow side walls of plate molds as a function of the casting taper during continuous casting
US4105059A (en) * 1976-09-27 1978-08-08 Kawasaki Seitetsu K.K. Method of reducing the casting width during continuous casting
US4134441A (en) * 1976-09-27 1979-01-16 Kawasaki Seitetsu K.K. Method of enlarging the strand width of a steel strand during continuous casting
US4245692A (en) * 1978-06-14 1981-01-20 Voest-Alpine Aktiengesellschaft Continuous casting mould suitable for adjustment to various cross sectional formats of a strand
US4270593A (en) * 1978-06-14 1981-06-02 Voest-Alpine Aktiengesellschaft Method of changing the cross sectional format of a strand and a plate mould for carrying out the method
EP0028766A1 (de) * 1979-11-02 1981-05-20 Concast Holding Ag Verfahren und Vorrichtung zum Verändern der Abmessungen eines Stranges beim Stranggiessen
US4356862A (en) * 1979-11-02 1982-11-02 Concast Ag Method for changing the dimensions of a strand during continuous casting
FR2501552A1 (fr) * 1981-03-11 1982-09-17 Mannesmann Ag Agencement pour le reglage de l'inclinaison des petits cotes d'une coquille a brames
US4413667A (en) * 1981-03-11 1983-11-08 Mannesmann Aktiengesellschaft Supervising the inclination of mold sides
US4480976A (en) * 1982-03-03 1984-11-06 Benteler-Werke Ag Adjustable sliding mold for continuous casting installations
US4635704A (en) * 1983-11-23 1987-01-13 Fives-Cail Babcock Method of changing the width of a continuous metal casting without interrupting the casting process
US4572277A (en) * 1984-02-29 1986-02-25 Sms Concast Inc. Arrangement for remote adjustment of the dimensions of a strand during continuous casting
US5242010A (en) * 1991-05-22 1993-09-07 Mannesmann Aktiengesellschaft Method for controlling the taper of narrow faces of a liquid-cooled mold
US5249622A (en) * 1992-04-13 1993-10-05 Stelco Inc. Retrofitted width adjusting mechanism for continuous casting
US20040045697A1 (en) * 2001-05-31 2004-03-11 Daido Tokushuko Kabushiki Kaisha Casting, vertical casting method and vertical casting apparatus
US7000679B2 (en) 2001-05-31 2006-02-21 Daido Tokushuko Kabushiki Kaisha Casting, vertical casting method and vertical casting apparatus
US20040055732A1 (en) * 2002-09-19 2004-03-25 Leblanc Guy Adjustable casting mold
US6857464B2 (en) 2002-09-19 2005-02-22 Hatch Associates Ltd. Adjustable casting mold
CN100592944C (zh) * 2004-10-13 2010-03-03 西门子Vai金属技术两合公司 用于提高可调式锭模的宽侧壁寿命的方法
US20210347099A1 (en) * 2016-07-07 2021-11-11 Canon Kabushiki Kaisha Manufacturing method and injection molding system

Also Published As

Publication number Publication date
DE2340768C3 (de) 1975-07-24
JPS5216449B2 (fi) 1977-05-10
GB1407643A (en) 1975-09-24
FR2196212B1 (fi) 1978-11-10
DE2340768A1 (de) 1974-02-28
JPS4937824A (fi) 1974-04-08
DE2340768B2 (de) 1974-07-18
FR2196212A1 (fi) 1974-03-15

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