Morgan Construction Company

Siemens Industry, Inc.

Terence M Shore

Harold E Woodrow

Melicher Puchovsky

Matthew Palfreman

Yoshio Kato

Gerald A Scerra

Joseph R Lawendowski

An apparatus is disclosed for receiving successive bars moving longitudinally along an entry path and for laterally transferring the bars from the entry path to a braking path. The apparatus comprises a run in table having a plurality of rollers arranged to convey the bars along the entry path. A braking surface is arranged between the run in table and the braking path. The braking surface and the rollers of the run in table lie in a reference plane sloping downwardly from the entry path to the braking path. A dividing wall is arranged between the run in table and the braking surface. The dividing wall is adjustable between a raised position projecting above the reference plane to block lateral downward movement of bars from the entry path across the braking surface to the braking path, and a lowered position accommodating such downward movement. A switch is positioned in advance of the dividing wall. The switch has a plurality of guide channels arranged around a common axis. The switch is positioned to successively align individual guide channels with the entry path to thereby direct bars passing therethrough along the entry path while the dividing wall is in its raised position, and is rotatable about its axis to successively realign the individual guide channels with the braking path to thereby direct bars passing therethrough to and along the braking path when the dividing wall is in its lowered position.

Apparatus for laterally transferring bars from a receiving path to a braking path

A roll stand for a rolling mill has a housing with a through opening. The housing rotatably supports a pair of roll shafts, at least one of which is journalled for rotation in the eccentric bores of interconnected sleeves. The roll shafts carry work rolls positioned in the through opening to define a roll pass therebetween. An adjustment mechanism is axially engageable with one of the interconnected sleeves to rotate both sleeves and thereby adjust the parting between the work rolls. The adjustment mechanism is contained in a module which is separably connected to the housing.

Roll stand with separable roll parting adjustment module

A hydrodynamically lubricated assembly is disclosed for adjustably and rotatably supporting the journals of work roll pairs in the housing of a roll stand in a rolling mill. The assembly includes a pair of eccentric sleeves journalled for rotation in the housing. Inner sleeves containing journal bearings are rotatably received in the eccentric sleeves, and the work roll journals are rotatably received in the journal bearings. Hydrodynamic and optionally also hydrostatic fluid supply networks communicate with the journal/bearing interfaces via radial conduits in the inner sleeves and journal bearings. The inner sleeves are anchored against rotation, and the eccentric sleeves are rotatable to adjust the parting between the work rolls.

Hydrodynamically lubricated eccentrically adjustable bearing

A modular rolling mill has a plurality of rolling units arranged in succession on a mill pass line, each rolling unit having multiple pairs of mechanically interconnected work rolls. A plurality of gear reduction units is arranged in succession alongside the mill pass line, each gear reduction unit being driven by a drive motor. Couplings detachably connect at least some of the rolling units to two successive gear reduction units, with the remainder of the rolling units being connected to single gear reduction units.

Modular rolling mill

A rolling mill laying head as a quill supported for rotation about its longitudinal axis between axially spaced first and second bearing assemblies. A laying pipe is carried by the quill for rotation therewith. The laying pipe has an entry section lying on the quill axis between the first and second bearing assemblies, and a three dimensionally curved intermediate section extending through and beyond the second bearing assembly to terminate at a delivery end spaced radially from the quill axis to define a circular path of travel. The dimension by which the laying pipe extends beyond the second bearing assembly is less than the diameter of the circular path.

High speed laying head

A single strand block-type rolling mill has pairs of oppositely inclined work rolls arranged successively along a mill pass line to roll rod and bar products in a twist-free manner. A planar base structure extends in parallel relationship beneath the mill pass line. A plurality of housings are arranged seriatim along the mill pass line. The housings are secured to the base structure and have mutually overlapping portions secured to one another. Each housing includes intermediate drive components for driving a pair of roll shafts carrying one of the work roll pairs, with the intermediate drive components being mechanically coupled to each other and to a common mill drive.

Single strand block-type rolling mill

Apparatus for shearing elongated products such as rods, bars and the like moving longitudinally along a path of travel. The apparatus includes a pair of constant diameter helical blades mounted for rotation about axes parallel to the path of travel. The rotational orientation of the blades and the spacing between their respective axes is such that segments of the blades coact along a cutting path parallel to the path of travel. The blades are rotated in opposite directions to thereby cause coacting segments thereof to move repetitively along the cutting path in the direction of product movement. A switch diverts the products from the path of travel across the cutting path for shearing by the coacting segments of the cutting blades.

High speed shear for end trimming rods and the like

A rolling mill material handling system includes a cooling bed and an associated laying head and cooling conveyor. Hot rolled products may be cut into segments which are shifted laterally onto the cooling bed. Alternatively, the hot rolled products may be directed longitudinally in undivided lengths past the cooling bed to the laying head where they are formed into rings and deposited on the cooling conveyor.

Rolling mill material handling system

Long products are hot rolled and sized by being subjected to progressively diminishing area reductions in a succession of at least three mechanically interconnected two roll passes driven by a common mill drive. The area reductions are achieved by imparting a first cross sectional configuration to the products rolled in the first roll pass, and by imparting a different second cross sectional configuration to the products being rolled in each of the second and third roll passes. A wide range of product sizes is accommodated by selectively adjusting the speeds at which each of the roll passes is driven by the common mill drive in order to vary the drive speed ratios between successive roll passes.

Method and apparatus for continuously hot rolling ferrous long products

A laying head for forming axially moving elongated products into series of rings. The laying head includes an auxiliary guide which is readily dismantled from the laying head in order to accommodate the rolling of larger diameter slower speed products. The guide includes the provision of a helical extension of the guide path defined by the rotating three-dimensionally curved pipe of the laying head. The helical extension is subdivided into an outer cylindrical shroud surrounding the rotational path of the outlet end of the laying pipe, and an inner helical trough having its open side facing the shroud. The helical trough includes a central hub adapted to be detachably secured to the tubular pipe support carrying the laying pipe. The central hub and the tubular pipe support include coacting surfaces which insure that the components are reliably assembled for balanced rotation.

Rod laying head with front and tail end ring control

In a single strand rolling mill wherein a product is rolled in a twist-free manner through a succession of finishing stands before proceeding to a laying head, the finishing stands are grouped into at least first and second blocks arranged respectively along first and second non-aligned paths, with the laying head lying on the second path. Switches are employed to alternatively direct the product exiting from the first block either to the second path for continued rolling in the second block prior to being directed to the laying head, or along a third path bypassing the second block and leading directly to the laying head.

Multiple outlet finishing mill

A block type rolling mill having work roll pairs arranged along a rolling line to roll a single strand product in a twist-free manner, wherein the work roll pairs are driven by a common mill drive via a drive train which includes first and second line shafts extending in parallel relationship with the rolling line, and intermediate drive means for mechanically interconnecting two successive work roll pairs interposed between the two successive work roll pairs and the first and second line shafts, and first and second engagement means for alternatively connecting the intermediate drive means to one or the other of the first and second line shafts via respective first and second intermeshed gear sets having different gear ratios.

Finishing block with dual speed sizing capability

A water box is used to cool hot rolled products in a rolling mill. The water box includes a base structure supporting a removable manifold, and a plurality of nozzles removably mounted on and in fluid communication with the manifold. The nozzles are lined with inserts which may be replaced when worn. The manifold is reversible end to end, as are the nozzles, thus enabling the water box to be used on either of two parallel rolling lines.

Split water box nozzle with removable inserts

A block type rolling mill has a plurality of roll stands arranged along a mill pass line, each roll stand having at least a first pair of work rolls mounted in cantilever fashion on a first pair of roll shafts. The first roll shafts have first pinion gears which are separate from each other and in meshed relationship respectively with one of a pair of intermeshed spur gears carried on a pair of intermediate drive shafts, with one of the intermediate drive shafts of each roll stand being coupled to one of two line shafts extending in parallel relationship to the mill pass line. At least one of the roll stands is provided with a second pair of work rolls mounted in cantilever fashion on a second pair of roll shafts. The second pair of roll shafts have second pinion gears which are separate from each other and each in meshed relationship respectively with one of the intermeshed spur gears of the at least one roll stand.

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Princeton, MA, United States of America

Terence M Shore