US3196500A - Follower control for traveling receptacle - Google Patents

Follower control for traveling receptacle Download PDF

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Publication number
US3196500A
US3196500A US262784A US26278463A US3196500A US 3196500 A US3196500 A US 3196500A US 262784 A US262784 A US 262784A US 26278463 A US26278463 A US 26278463A US 3196500 A US3196500 A US 3196500A
Authority
US
United States
Prior art keywords
receptacle
product
sensing
unsevered
control
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
US262784A
Other languages
English (en)
Inventor
Harold G Frostick
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.)
United States Steel Corp
Original Assignee
United States Steel Corp
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 United States Steel Corp filed Critical United States Steel Corp
Priority to US262784A priority Critical patent/US3196500A/en
Priority to GB7217/64A priority patent/GB1039821A/en
Priority to NL6401848A priority patent/NL6401848A/xx
Priority to DE19641458236 priority patent/DE1458236A1/de
Priority to ES0297174A priority patent/ES297174A1/es
Priority to AT186564A priority patent/AT253709B/de
Priority to BE644702A priority patent/BE644702A/xx
Application granted granted Critical
Publication of US3196500A publication Critical patent/US3196500A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/46—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/121—Control of position or direction using feedback using synchromachines (selsyns)
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/125—Control of position or direction using feedback using discrete position sensor
    • G05D3/127—Control of position or direction using feedback using discrete position sensor with electrical contact
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2022—Initiated by means responsive to product or work
    • Y10T83/2024—Responsive to work

Definitions

  • This invention relates to a follower control for an electric-motor driven receptacle, with particular reference to a follower control for a traveling receptacle for removing high temperature workpieces from a continuous metal casting unit and the like.
  • the receptacle To accomplish its purpose in conjunction with the aforementioned continuous casting operation, the receptacle must be in position, proximate to the lower end of the emerging product, at the time of its severance from the main body; lower the severed section out of the interfering range of newly emerging product; and return to a position for acceptance of the next severed section prior to its cut-off.
  • FIGURE 1 is a plan view of a traveling receptacle installation with follower control means of the invention incorporated therein;
  • FIGURE 2 is a side elevational view of the apparatus shown in FIGURE 1;
  • FIGURE 3 is a perspective view of a receptacle with 3,196,500 Patented July 27, 1965 "ice position sensing and other control members installed therein;
  • FIGURE 4 is a view taken along the line IVIV of FIGURE 1, to detail a sensing member installation
  • FIGURE 5 is an electrical schematic of control circuitry.
  • FIGURES 1 and 2 depict the overall setting of a typical receptacle installation of the invention as applied to the continuous casting or" steel slabs, a portion of a downwardly emerging slab 1 is shown in dot and dash lines in entry relationship to receptacle 2.
  • the receptacle receives support from vertical side guide members 3 and is raised and lowered by means of a wire rope 4 passing over sheaves 5 to drums 6, which are driven by electric motor 7 through drive mechanism 8.
  • slab 1 is again shown in position of entry into the receptacle, where, upon severance of a section thereof for lowering away from the continuous casting, it receives upward support from fixed fingers 10.
  • Movable finger 11 has a movement range depicted by the dotted line representations of FIGURE 4, and in the absence of being actuated downwardly by product proximity, the finger raises by virtue of the urging of torsion spring 13, until projection 14, rotating with rockshaft 12, engages stationary stop 15.
  • Rockshaft 12 motion drives reversible multi-contact cam limit switch 20 through motion multiplication means represented by gearbox 21.
  • a limit switch such as illustrated and described in Westinghouse Electric Corporation price list 15-321, page 2, effective May 10, 1961, has been successfully employed.
  • Multiple contact switch 20 contains opening and closing contact-s 20a, 20b, etc. which are schematically presented in FIGURE 5 in conjunction with the circuitry operated thereby, which includes means for varying the speed and direction of motor 7, shown in receptacle driving relationship through drum 6 and wire rope 4.
  • Motor 7 receives current from direct current generator 22, the output voltage and polarity of which are responsive to the output of exciter 23 which latter output is responsive to its field supply 24, which is variable in voltage and polarity by action of switch 20 upon the intervening circuitry, as shown in FIGURE 5 and as will be more fully described below.
  • sensing finger 11 will be in its uppermost position.
  • contacts 20a, 20b, and 20c are closed and contacts 20d, Ztle, and 20 are open as depicted in FIGURE 5, permitting full current 24 being supplied to the field of exciter 23, with the polarity as indicated, which leads to motor operation with such speed and direction as to cause relatively high speed upward travel of the receptacle.
  • sensing finger 11 Upon the approach of receptacle 2 and slab product 1, to predetermined spacing therebetween, sensing finger 11 is actuated by slab contact to partial depression, which in turn actuates cam limit switch20 which is aligned to open contact 200 whereby resistance 25 is introduced into the exciter current source 24 with resultant reduction in exciter field current and consequent reduction in generator output, motor speed, and receptacle speed.
  • cam limit switch20 which is aligned to open contact 200 whereby resistance 25 is introduced into the exciter current source 24 with resultant reduction in exciter field current and consequent reduction in generator output, motor speed, and receptacle speed.
  • j current supply 24 and resistances at least one of which is preferably variable, as represented by resistance 26, 'desired high and low receptacle speeds, requirements, may be obtained, a
  • sensingandcontrol means being additionally so aligned that product severance andv bottoming thereof in the receptacle initiates downward travel of the receptacle to remove the severed product
  • the low speeds of receptacle travel are chosen by alternate upward and downward receptacle movement, in a hunting manner, the receptacle is enabled to follow themovements of the lower end of the unsevered product, when the latter is moving at usual'speeds. Since the sensing means are set tooperate with predetermined closing distance betweenthe unsevered product and the support fingersof the receptacle, the is maintained. a v p It, may be noted that although operating contingencies sometimes require upward movement of uncutcasting, or
  • the follower control ofthe invention insures continued receptacle presence, in position awaiting product cut-off.
  • said'mean's' comprising means carried 1 by the receptacle for sensing -the de'gree of proximity of unsevered product, the introduction'of se'veredproduct into the receptacle,- and the emptying of the receptacle, and means responsive to'said sensing means for control of the.
  • said control means including means for control .of the voltage and polarity of a direct current and .comprising .multi-speed: regulator V circuitry for both upward and downward receptacle travel, said sensing and control means being so aligned that, with the sensing means beyond theinfiuence of the product, the receptacle travels upwardly at relatively high speed until upon its arrival at predetermined spacing from the end of the unsevered product the sensing means are actuated to cause upward travel at relatively lowspeed and upon predetermined reduction in spacing the sensing means are further actuated to cause downward receptacle travel at relativelylow speed," and upon product severance the sensing means are actuated to cause downward travel at from the receptacle.
  • the sensing means automaticallybring into operation the high speed range V of receptacle travel for non-interrupted follower action.
  • Termination of receptacle travel at the lower end of its path, at its unloading position, may be by conventional limit switch means.
  • i t I do not desire to be limited to the exact'details of construction, and applications, shown and described, for
  • said means for selecting said circuits comprise a reversible multiple con- I tact cam limit switch responsively connected to said senselectric motor, for lowering the severed'product of a 7 ing unit and thelike,-means, for follower control of the receptacle in relation to emergent product comprising vertically downwardly delivering continuous metal castmeans for self-spacing said receptacle relative.
  • sensing and con-' trol means being so aligned that the unloadedreceptacle travels upwardly until the sensingmeans are actuated at a predetermined spacing between receptacle and unsevered product, to reverse the direction of receptacle, travel to a downward direction, which approach and reversal isrepeated. until product severance, whereby a protective air a gap is maintained between the-receptacle proper and the emerging product duringrthe period the receptacle is in ing means,
  • sensing means including a rockshaft mounted in said receptacle
  • rocker arm rigidly attached thereto which projects into the receptacle in such position as to vbe responsively actuated by product proximity, means'responsively connecting thesensing means and said cam-limit switch comprising means for rockshaft motion multiplication, and means for self-return of said arm to a p'ositionto sense entry or removal of said product.
  • control means com,- prising position sensing m'eans being progressively and reversibly responsive to variations in mutual proximity of workpiece and receptacle within a zone between bottoming of the workpiece in the receptacle and separation of workpiece and receptacle bottom by a distance to provide a heat insulating air gap therebetween, circuit means for reversing and varying the speed of said motor, and elec trical switching means operatively connected with said sensing means and said motor circuit means, the operative alignment of said sensing, switching, and circuit means being such that, with separation of receptacle and emerging unsevered workpiece by greater than said air-gap distance, motor operates to cause relatively high speed up- Ward travel of the receptacle, to meet emerging workpiece prior to its severance, upon approaching air gap distance said sensing means are initially actuated with resultant motor speed reduction

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Control Of Conveyors (AREA)
  • Continuous Casting (AREA)
  • Manipulator (AREA)
US262784A 1963-03-04 1963-03-04 Follower control for traveling receptacle Expired - Lifetime US3196500A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US262784A US3196500A (en) 1963-03-04 1963-03-04 Follower control for traveling receptacle
GB7217/64A GB1039821A (en) 1963-03-04 1964-02-20 Follower control for travelling receptacle
NL6401848A NL6401848A (enrdf_load_html_response) 1963-03-04 1964-02-26
DE19641458236 DE1458236A1 (de) 1963-03-04 1964-02-27 Anordnung fuer eine Metallstranggiessanlage
ES0297174A ES297174A1 (es) 1963-03-04 1964-03-03 Perfeccionamientos en aparatos para la fundiciën continua de metales
AT186564A AT253709B (de) 1963-03-04 1964-03-04 Nachlaufsteuerung für einen wandernden Knüppelfänger in einer Stranggießanlage
BE644702A BE644702A (enrdf_load_html_response) 1963-03-04 1964-03-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US262784A US3196500A (en) 1963-03-04 1963-03-04 Follower control for traveling receptacle

Publications (1)

Publication Number Publication Date
US3196500A true US3196500A (en) 1965-07-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US262784A Expired - Lifetime US3196500A (en) 1963-03-04 1963-03-04 Follower control for traveling receptacle

Country Status (7)

Country Link
US (1) US3196500A (enrdf_load_html_response)
AT (1) AT253709B (enrdf_load_html_response)
BE (1) BE644702A (enrdf_load_html_response)
DE (1) DE1458236A1 (enrdf_load_html_response)
ES (1) ES297174A1 (enrdf_load_html_response)
GB (1) GB1039821A (enrdf_load_html_response)
NL (1) NL6401848A (enrdf_load_html_response)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366376A (en) * 1964-11-30 1968-01-30 United States Steel Corp Oxygen injection apparatus for steelmaking converters
USD976105S1 (en) 2018-08-10 2023-01-24 Berry Global, Inc. Drink cup lid

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582329A (en) * 1948-04-13 1952-01-15 Babcock & Wilcox Tube Company Apparatus for handling continuous castings
GB733913A (en) * 1950-11-30 1955-07-20 Edward Beecher Ruscoe Improvements in or relating to continuous metal-casting machines
US2806263A (en) * 1953-10-07 1957-09-17 Cleveland Pneumatic Tool Co Continuous casting apparatus and load handling and supporting apparatus therefor
US2898650A (en) * 1954-06-24 1959-08-11 Svenska Metallverken Ab Apparatus for removing the casting in continuous casting processes
DE1113066B (de) * 1954-01-28 1961-08-24 Ver Leichtmetallwerke Gmbh Foerdervorrichtung fuer Gussbloecke
GB919869A (en) * 1960-10-06 1963-02-27 Continuous Casting Company Ltd Improvements relating to continuous casting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582329A (en) * 1948-04-13 1952-01-15 Babcock & Wilcox Tube Company Apparatus for handling continuous castings
GB733913A (en) * 1950-11-30 1955-07-20 Edward Beecher Ruscoe Improvements in or relating to continuous metal-casting machines
US2806263A (en) * 1953-10-07 1957-09-17 Cleveland Pneumatic Tool Co Continuous casting apparatus and load handling and supporting apparatus therefor
DE1113066B (de) * 1954-01-28 1961-08-24 Ver Leichtmetallwerke Gmbh Foerdervorrichtung fuer Gussbloecke
US2898650A (en) * 1954-06-24 1959-08-11 Svenska Metallverken Ab Apparatus for removing the casting in continuous casting processes
GB919869A (en) * 1960-10-06 1963-02-27 Continuous Casting Company Ltd Improvements relating to continuous casting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366376A (en) * 1964-11-30 1968-01-30 United States Steel Corp Oxygen injection apparatus for steelmaking converters
USD976105S1 (en) 2018-08-10 2023-01-24 Berry Global, Inc. Drink cup lid

Also Published As

Publication number Publication date
NL6401848A (enrdf_load_html_response) 1964-09-07
DE1458236A1 (de) 1968-12-19
AT253709B (de) 1967-04-25
GB1039821A (en) 1966-08-24
ES297174A1 (es) 1964-05-16
BE644702A (enrdf_load_html_response) 1964-09-04

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