US3901424A - Method and apparatus for forming loops of metal band materials with floor type looper - Google Patents

Method and apparatus for forming loops of metal band materials with floor type looper Download PDF

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Publication number
US3901424A
US3901424A US416206A US41620673A US3901424A US 3901424 A US3901424 A US 3901424A US 416206 A US416206 A US 416206A US 41620673 A US41620673 A US 41620673A US 3901424 A US3901424 A US 3901424A
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US
United States
Prior art keywords
floor
strip
skelp
arm
metal band
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
US416206A
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English (en)
Inventor
Takuji Sakai
Kunihiko Takada
Yuji Katsuma
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.)
Nippon Steel Corp
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Nippon 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 Nippon Steel Corp filed Critical Nippon Steel Corp
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Publication of US3901424A publication Critical patent/US3901424A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
    • B21B41/08—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters without overall change in the general direction of movement of the work
    • B21B41/10—Loop deflectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C49/00—Devices for temporarily accumulating material

Definitions

  • ABSTRACT A method of forming loops of a metal band material, which comprises, when stocking metal band maten'als in quantities on the floor level of the stock yard, pushing out the side of the metal band with a loop thrower, as said metal band is progressing in its long direction, such pushing out to be done at the inlet onto the floor so as to have it stand up with its surface forming a right angle against the surface of the floor and also to form a new tip of said metal band and pushing said metal band toward the center of the floor by using a plurality of pushers so as to form corrugation patterns of said metal band in the direction of its progress, so
  • FIG. 4 ' PRIOR ART FIG. 4
  • the present invention relates to a method and an apparatus for forming loops of metal band material such as hoop steel or slitted material to be stocked on the floor.
  • a material skelp is 160 to 420 mm in width, 1.9 to 8.2 mm in thickness and 600 to 700 m in length; in order to have the tube producing machine work most effectively, the length of skelp should desirably be endless.
  • skelps of limited length they are usually coiled.
  • the time required for welding the end of one skelp with the top of a next one is about 3 minutes, for which time it is necessary that the supply of skelp should stop or the welder should move in pace with the supply of skelp.
  • As the supply of skelp is made at a high speed (200 m/min. max. it normally stops for welding.
  • FIGS. 1-4 For the conventional method of forming loops of a band material (skelp in this case), refer to FIGS. 1-4, according to which a skelp progresses-along the looping floor 5, the skelp being shown by reference numerals 7, 7, 8 and 9.
  • the skelp ismoved by means of an entry section 1, a pinch roll 2, a guide roll 3, a magnet roll 4, etc.
  • the loop thrower 11 set at the inlet onto the floor 5 rotates counter-clockwise to push the skelp to the center of the looping floor 5 for the curve as shown by numerals 12-6-7.
  • the repetition of such action several times makes loops one after another.
  • the quantity of skelp stocked in the form of loops is determined according to the time for welding skelps, as mentioned above.
  • the stock should be about 300 m, which means six loops if each is 50 m.
  • skelp is pulled by the magnet roll 4 as it is extruded from the entry section 1, but it is driven mainly by the entry section 1 and subsidiarily by the magnet roll 4.
  • the top 17 of the skelp progresses in the direction of the arrow, and the parts 18 and 18' of the skelp push the preceding part 19 of the skelp to the middle part of the looper.
  • this side of the top 17 of the skelp should take the form of a straight line, as shown by numerals 20-21-22, but it it meets great resistance in pushing aside the preceding part of the skelp, buckling may occur, as shown by numerals 20, 21 and 22. If buckling takes place, the skelp 22-17 stops, making the skelp 20-2l'-22 build up so rapidly that the operation has to be stopped.
  • the skelp 23-23 lies over the skelp 24-24 and the skelp 24-24 over the skelp 25-25 and 26-26.
  • the present invention has an object to provide a loop forming method such that loops of a metal band material can be easily formed without buckling and overlapping.
  • Another object of the present invention is to provide a loop forming method, whereby loops of a metal band material can be formed automatically without the treatment of skelp by operators.
  • a further object of the present invention is to provide an apparatus for effecting good practice of the abovementioned method of forming loops of a metal band material.
  • the metal band loop-forming method of the present invention is so characterized that, when stocking metal band materials in quantities on the floor of the stock yard,
  • the loop forming apparatus of the present invention comprises a loop thrower set at the inlet onto the looping floor, and a plurality of pushers for forming corrugation patterns of such metal band in the direction of its progress.
  • FIGS. 1, 2 and 3 are views for illustrating the description of the skelp loop formation by using a looper of the conventional, floor type.
  • FIGS. 4 and 5a and 5b are views for a detailed description of the loop formation by using a looper of conventional type.
  • FIGS. 6 and 7 are views for illustrating the description of the loop formation in an embodiment of the present invention.
  • FIG. 8 is a view for illustrating the description of a metal band to stand on its edge in the order of a, b and c in the embodiment of the present invention.
  • a skelp as it is going into a looping floor 5, is made to stand with its surface forming a right angle against the surface of the floor 5 through pushing-out of the side of the skelp by the rotation of a loop thrower 11 set at the inlet onto the floor 5, so that a curve -31-32 is formed.
  • the so pushed skelp is returned from the situation of having fallen down or falling to a standing position (in which the surface of the skelp forms a right angle against the surface of the floor), thus forming a corrugation pattern 31-32-36-37-38 with the edge of the skelp along the direction of progress of the skelp.
  • the repetition of such process several times finally forms loops of the skelp as shown in FIG. 7.
  • the skelp stands on the edge and no problem of overlapping one skelp by another occurs.
  • the progress of a second top 41 of the skelp can be made without buckling, overlapping and other complications, requiring no hands taking care of it.
  • the skelp In order to keep the skelp standing on edge, it is scooped by the loop former (pusher) with its curve44 formed on its tip 43 as shown in FIG. 8, as the tip 43 of the loop former moves from the right to the left against the skelp 42-42 so that the skelp is handed, as shown in the sequence of FIGS. 8b and 8c, such that it stands up nearly at a right angle against the floor 5.
  • the skelp can be kept standing by making it stand up at the same time with the pushing out of the same in the order of a, b and c of FIG. 8. In this case, the lower end of the pusher should be placed below the position of the skelp.
  • the number and arrangement of the pushers (33, 34 and 35 in this case), which compose the loop forming apparatus in combination with the loop thrower, should be determined according to the size of the loop thrower, so that an ideal corrugation pattern can be obtained.
  • the number of pushers required it should be determined according to its stroke and the length of the loop thrower; if its stroke is 3m for instance, the appropriate distance between two pushers should be 8 to 12 111.
  • FIG. 9 and FIG. 10 are respectively a side view and a plane view of the loop former of the present invention.
  • the pushing bar 45 which is the main part of said loop former, has the tip equipped with a skelp pushing arm 46, for free rotation on a pin 47 by means of a power cylinder 48.
  • On the bottom surface of the pushing bar 45 is set a guide bar 49 which mounts on a guide roller 50.
  • a rack 51 which is to move the pushing bar in the direction at a right angle to the longitudinal direction of the skelp, by means of a pinion 52 and a motor 53.
  • a screw can be used instead of a rack and pinion.
  • the skelp 54 which is in the situation of having fallen down, is pushed to stand up in the position indicated by reference numeral 55. At that time, the skelp pushing arm 46 has turned to stay at the position 46', leaving a space open for a skelp to traverse.
  • the skelp pushing arm 46 When the pushing bar 45 has returned to the set position, the skelp pushing arm 46 also is at its own set position.
  • the pushing bar 45 has its tip equipped with a skelp pushingarm 46 for free verticai movement (for free .going-in and-out) by means of a power cylinder 56.
  • a motor or a power motor can be used in place of a power cylinder.
  • loop forming system there is no limitation, so that besides the abovementioned system in which a loop forming apparatus is set by the side of a floor-type looper, such apparatus as shown in FIG. 13, which is constructed as follows, can be used.
  • a frame 60 is mounted on the top of the looper, and from said frame is suspended a bar 63 through rack 61 and a pinion 62 for free horizontal movement; and at one end of said bar 63 is set a skelp pushing arm 65 pcsitioned for free rotation and activated by a cylinder 64.
  • the arm 65 is adapted to push a skelp at a right angle against the direction of its progress by means of the motion of said bar 63, thereby standing up the skelp from the position indicated by 66 to the position indicated by 67 and forming corrugation patterns.
  • a chain is usable for putting such arm into motion.
  • the tip of the skelp pushing arm 46 As the tip of the skelp pushing arm 46 is subjected to abrasion by the skelp edge, it is recommended that the tip be surface-hardened and made replaceable. Moreover, the arm should have such a curve as shown in FIG. 8 to make easier standing-up of skelp, or should be of the roller type to reduce abrasion and resistance.
  • a method of forming loops of metal strip on a looping floor, as said strip has its flat surface trailing over said floor which comprises the steps of:
  • An apparatus for forming loops of a moving metal strip comprising:
  • a loop thrower mounted for free rotation at a position near the inlet of a looping floor, said metal strip progressing thereabout with its flat surface trailing over the surface of said loop thrower to kick up the side of said metal strip progressing straightly;
  • each of such pushers comprised of a bar adapted for free reciprocal motion at substantially a right angle to the longitudinal direction of said strip, and an arm mounted on the tip of said bar and adapted to extend downwardly therefrom to contact said metal strip, said arm having a curve on its portion contacting said metal strip to push on said metal strip, thereby making said strip stand vertically on the surface of said floor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Advancing Webs (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Basic Packing Technique (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
US416206A 1972-11-17 1973-11-15 Method and apparatus for forming loops of metal band materials with floor type looper Expired - Lifetime US3901424A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47115277A JPS522392B2 (cs) 1972-11-17 1972-11-17

Publications (1)

Publication Number Publication Date
US3901424A true US3901424A (en) 1975-08-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
US416206A Expired - Lifetime US3901424A (en) 1972-11-17 1973-11-15 Method and apparatus for forming loops of metal band materials with floor type looper

Country Status (5)

Country Link
US (1) US3901424A (cs)
JP (1) JPS522392B2 (cs)
DE (1) DE2357190B2 (cs)
FR (1) FR2206987B1 (cs)
GB (1) GB1420639A (cs)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522953A (en) * 1945-01-30 1950-09-19 Aluminum Co Of America Strip handling mechanism
US3176927A (en) * 1962-03-20 1965-04-06 Electro Mechanical Consultants Repeater mechanism for tape recorders

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522953A (en) * 1945-01-30 1950-09-19 Aluminum Co Of America Strip handling mechanism
US3176927A (en) * 1962-03-20 1965-04-06 Electro Mechanical Consultants Repeater mechanism for tape recorders

Also Published As

Publication number Publication date
DE2357190B2 (de) 1977-06-02
GB1420639A (en) 1976-01-07
JPS522392B2 (cs) 1977-01-21
DE2357190A1 (de) 1974-05-22
FR2206987B1 (cs) 1976-06-25
JPS4974158A (cs) 1974-07-17
FR2206987A1 (cs) 1974-06-14

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