US3512389A - Device for centering a metal bar entering the gap between two adjustable sizing rolls - Google Patents

Device for centering a metal bar entering the gap between two adjustable sizing rolls Download PDF

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Publication number
US3512389A
US3512389A US646699A US3512389DA US3512389A US 3512389 A US3512389 A US 3512389A US 646699 A US646699 A US 646699A US 3512389D A US3512389D A US 3512389DA US 3512389 A US3512389 A US 3512389A
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US
United States
Prior art keywords
centering
gap
metal bar
adjustable sizing
sizing rolls
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
US646699A
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English (en)
Inventor
Rudolf Schoffmann
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.)
Voestalpine AG
Voest AG
Original Assignee
Voestalpine AG
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 Voestalpine AG filed Critical Voestalpine AG
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Publication of US3512389A publication Critical patent/US3512389A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass

Definitions

  • centering shoes includes a piston portion sildable within a cylinder upon application of hydraulic pressure, the shoe position relative to the path of the bar thus being hydraulically controlled.
  • a stop within the cylinder limits the maximum displacement of the shoe toward the path of the bar and spring bias means within the cylinder returns the shoe to an initial withdrawn position upon release of hydraulic pressure.
  • the invention relates to a device for centering a metal bar on entering the gap between two adjustable sizing rolls.
  • this problem is solved by providing at least two centering shoes arranged on roll gap level on opposite sides of the bar, which center the bar in the direction of the roll axes, at least one centering shoe being adjustable.
  • These centering shoes are preferably arranged in front of the roll gap. Alternatively, they may be provided immediately behind the roll gap.
  • the centering shoes are hydraulically operable. Further, it is of advantage to provide stops for limiting the path of the centering shoes.
  • FIG. 1 is a vertical cross-sectional view of a charging funnel arranged in front of a rolling mill having one pair of rolls.
  • FIG. 2 is a vertical cross-sectional view of a charging funnel arranged in front of a rolling mill having one pair of rolls.
  • FIG. 1 shows a cross-sectional view along line II-II of FIG. 1, and FIG. 3 the same sectional view as shown in FIG. 2, but of a modified embodiment.
  • the charging funnel 30 is suspended on bearing bolts 6, 6; it has a conical inlet 31 narrowing to square shape.
  • the charging funnel 30 is arranged in front of a pair of rolls, the lower roll of which is designated by numeral 8 in FIG. 2.
  • centering shoes 33, 33 are provided in the charging funnel, which (in the embodiment shown) are movable by a hydraulic cylinder 34 in the direction of the roll axes, as demonstrated by the arrow.
  • the cylinder has an inlet 35 for a hydraulic medium, which impinges on the centering shoe 33 designed as a piston and presses it in the direction of the arrow.
  • Numberal 37 denotes a stop for limiting the path of the centering shoe 33.
  • the modified embodiment according to FIG. 3 diflers from the one shown in FIG. 2 in that one of the centering shoes is fixedly arranged, i.e. unadjustable, while the opposite shoe 33 is designed in the same way as already described in connection with FIGS. 1 and 2.
  • Apparatus for centering a metal bar having an unshaped head while entering a rolling mill said mill having at least one pair of adjustable sizing rolls enclosing a roll gap, said roll gap being opened to accommodate said unshaped head during passage thereof through said rolls and closed thereafter to define the roll caliber
  • said centering apparatus comprising, a pair of centering shoes operable with said roll gap wide open to center said bar relative to the middle axis of said roll caliber, said shoes being disposed immediately adjacent said roll gap and on opposite sides of the path of said bar, each of said centering shoes being adjustable by a member moving perpendicularly to said path, said member comprising a piston movable within a cylinder upon application of hydraulic pressure, stop means for limiting the extent of movement of said member toward said path, and means for returning said member to an initial position upon release of hydraulic pressure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Crushing And Grinding (AREA)
US646699A 1967-02-03 1967-06-16 Device for centering a metal bar entering the gap between two adjustable sizing rolls Expired - Lifetime US3512389A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT102267A AT277128B (de) 1967-02-03 1967-02-03 Verfahren und Einrichtung zum Zentrieren eines Metallstranges

Publications (1)

Publication Number Publication Date
US3512389A true US3512389A (en) 1970-05-19

Family

ID=3505033

Family Applications (1)

Application Number Title Priority Date Filing Date
US646699A Expired - Lifetime US3512389A (en) 1967-02-03 1967-06-16 Device for centering a metal bar entering the gap between two adjustable sizing rolls

Country Status (8)

Country Link
US (1) US3512389A (en, 2012)
AT (1) AT277128B (en, 2012)
BE (1) BE710253A (en, 2012)
CH (1) CH459116A (en, 2012)
DE (2) DE6603168U (en, 2012)
ES (1) ES350110A1 (en, 2012)
FR (1) FR1552649A (en, 2012)
GB (1) GB1210940A (en, 2012)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1398843A (en) * 1919-10-30 1921-11-29 Cullen Andrew Guide-box for rolling-mills
US1804947A (en) * 1928-10-23 1931-05-12 Palmgren Per Gunnar Rolling mill guide
US2816467A (en) * 1952-04-02 1957-12-17 Sandvikens Jernverks Ab Rolling mill construction
US3104566A (en) * 1958-10-16 1963-09-24 Square D Co Rolling mill control
US3204441A (en) * 1960-07-29 1965-09-07 Blaw Knox Co Automatic strip threading devices

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1398843A (en) * 1919-10-30 1921-11-29 Cullen Andrew Guide-box for rolling-mills
US1804947A (en) * 1928-10-23 1931-05-12 Palmgren Per Gunnar Rolling mill guide
US2816467A (en) * 1952-04-02 1957-12-17 Sandvikens Jernverks Ab Rolling mill construction
US3104566A (en) * 1958-10-16 1963-09-24 Square D Co Rolling mill control
US3204441A (en) * 1960-07-29 1965-09-07 Blaw Knox Co Automatic strip threading devices

Also Published As

Publication number Publication date
AT277128B (de) 1969-12-10
BE710253A (en, 2012) 1968-06-17
CH459116A (de) 1968-07-15
FR1552649A (en, 2012) 1969-01-03
DE1652568A1 (de) 1970-04-09
GB1210940A (en) 1970-11-04
ES350110A1 (es) 1969-04-16
DE6603168U (de) 1969-08-07

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