US3876094A - Method for stacking casting pigs into bundles - Google Patents

Method for stacking casting pigs into bundles Download PDF

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Publication number
US3876094A
US3876094A US325442A US32544273A US3876094A US 3876094 A US3876094 A US 3876094A US 325442 A US325442 A US 325442A US 32544273 A US32544273 A US 32544273A US 3876094 A US3876094 A US 3876094A
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United States
Prior art keywords
pig
pigs
casting
track
layer
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Expired - Lifetime
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US325442A
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English (en)
Inventor
Asko Einari Ojanen
Tor-Leif Johannes Huggare
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Outokumpu Oyj
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Outokumpu Oyj
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/02—Devices for feeding articles or materials to conveyors
    • B65G47/04—Devices for feeding articles or materials to conveyors for feeding articles
    • B65G47/06—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines
    • B65G47/08—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines spacing or grouping the articles during feeding
    • B65G47/084—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines spacing or grouping the articles during feeding grouping articles in a predetermined 2-dimensional pattern
    • B65G47/086—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines spacing or grouping the articles during feeding grouping articles in a predetermined 2-dimensional pattern cubiform articles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins

Definitions

  • the casting pigs are carried in spatially controlled succession to each other along a conveyor to thrust against a stop plate at the outlet end of the conveyor and part of the casting pigs which have been stopped by the stop plate are transferred laterally away from the conveyor. whereafter the pigs that have been laterally transferred optionally after a turn of 90 in a horizontal plane are pushed in a direction substantially perpendicular towards the casting pig conveyor or a hypothetic extension thereof in order to assemble a casting pig layer, and finally the assembled casting pig layer is transferred to a stacking station.
  • the casting pigs are transferred in pairs from one conveyor to the other.
  • the casting pigs are fitted in place in the layer on the second conveyor with a lifting and transferring device.
  • the previously known methods of stacking casting pigs have several disadvantages, such as:
  • the known systems are based on gripping the casting pigs and lifting them upwards, which requires that the pigs be highly identical in order that the gripping and dropping can always take place in the same manner, the known systems are very sensitive to the positions of the casting pigs at the gripping point, for even the smallest deviation will cause an uneven grip which either completely prevents the lifting or causes the bundle to become loosely stacked, in the known systems it is not possible to turn the topmost layer of casting pigs in a bundle upside down
  • the casting pigs are transferred in a spatially controlled succession along substantially straight track to impinge against a stop plate at the end of the track, at least some of the pigs being transferred laterally away from the track, whereafter the pigs which have been moved aside and possibly turned 90, are transferred in a direction essentially perpendicular towards the casting pig track or a hypothetic extension in order to assemble one of the casting pig layers, and finally the assembled casting pig layer is transferred to a stacking station.
  • a method and device for stacking casting pigs a method and device in which a high stacking rate (e.g. 20 tons per hour, casting pigs of 25 kg) is highly possible because the different operational steps can overlap in the device,
  • the method of stacking makes possible an automatic turning of the topmost layer.
  • FIG. 1 illustrates a side view of a bundle of casting pigs stacked by the method according to the invention
  • FIG. 2 shows a frontal view of the same bundle of casting pigs as FIG. 1,
  • FIG. 3 shows a section along line IIIIII in FIG. 1,
  • FIG. 4 shows a section along line IVIV in FIG. 1,
  • FIG. 5 shows a view from above of a special arrangement table used in the application of the method according to the invention
  • FIGS. 6 and 7 show the same arrangement table as FIG. 5 but from behind and from the sides
  • FIG. 8 shows a side view of the cooling. stacking, weighing, binding and storage system for casting pigs
  • FIG. 9 shows a view from above of a system according to FIG. 8.
  • Foot pigs la-4a and the 32 normal casting pigs following arrive on the arrangement table in the position in which they come from the conveyor. But the four last pigs of the bundle are turned text side upwards in the manner shown in FIGS. 1 and 2. The text side of the pigs at the top of the stack is accordingly visible so the instription, for example, the producer's name, metal content and weight of the pig, etc., forming the text can be read.
  • a casting pig bundle is formed from several casting pig layers one on top of the other, each layer containing four pigs, for example. 1b-4b. Every second layer of pigs has been assembled in a different manner with the result that the casting pig bundle contains casting pig layers assembled in two different manners (FIGS. 3 and 4). An exception is formed by the topmost layer which has been assembled in the same manner as the layer second to the top. In addition, pigs 5 of the topmost layer have been turned upside down so that the text side is visible. The undermost pigs are so-called foot pigs which facilitate the handling of the bundle on, for example, a cart.
  • cylinder 14 receives an impulse and steel bar 15 attached to the end of the piston of the cylinder moves pig 1a to the side until the other end of the pig reaches stop plate 16 at the edge of the table.
  • Cylinder 14 remains in this position until casting pig has arrived on the table.
  • Cylinder 14 receives an impulse to transfer pig 2a to the other edge of table 11.
  • Simultaneously cylinder 17 receives an impulse to push pig 1a forward on table 11 for a distance of its stroke length. Cylinder 17 returns immediately. Thereafter pig 3a has arrived on the table and cylinder 14 pushes it again in front of cylinder 17.
  • transfer device 22 above table 11 has been moved to its place by cylinder 23 even before the formation of the undermost layer on table 11.
  • transfer cylinder 27 of stacking sheet 26 receives an impulse to draw the sheet away from under the pig layer.
  • Transfer device 22 rests on the pigs all the time. They are transferred onto hydraulically operated weighing plate 28 underneath. Transfer plate 25 follows them until descending weighing plate 28 is at such a height that stacking sheet 26 can return onto the pig layer. At this time transfer de vice 22 gives an impulse to the hydraulics and the de scent ceases. Simultaneously, vertical cylinder 24 of transfer device 22 lifts device 22 and cylinder 23 draws transfer device 22 onto arrangement table 11 to be ready for the next transfer.
  • the first pig of a layer according to FIG. 3 arrives on the stacking table 4.5 seconds after the arrival of the last pig of the previous layer.
  • Cylinder 14 pushes pig 1b in front of cylinder 17 and returns immediately. Cylinder l7 pushes pig 1b forward for the distance of its stroke length and returns immediately.
  • pig 2b has arrived on table [1, cylinder 14 pushes it in front ofcylinder 17 and cylinder 14 returns. Cylinder 17 pushes pig 2b forward for the distance of its stroke length. Fig 2b collides with pig 1b and the two are pushed against stop plate 19 at the edge of the table. Cylinder 17 returns and assembling cylinders 21 receive impulses and push pigs 1b and 2b towards the center for the distance of their stroke length. Assembling cylinders 21 return.
  • Pig 3b has arrived on table 11. Cylinder l4 pushes it in front of cylinder 17 and remains waiting until pig 4b has arrived.
  • cylinder 30 When pig 3b has been turned, cylinder 30 lifts turning device 29 and cylinder 31 returns it to the correct position for the next turning. When cylinder 30 is in a raised position, cylinder 17 receives an impulse and pushes pig 3b in front of it towards stop plate 19 at the edge of the table, next to pigs lb and 212.
  • stop means associated with the descending arc 12 moves to an elevated position to stop each pig in front of a photocell.
  • the stop means can suitably be in the form of two parts vertically movable into and out of the path of the pigs to stop the pigs in a known manner.
  • horizontal cylinder 36 (hydraulic) of lifting device receives an impulse and pushes lifting fork 37 under the stack.
  • hydraulic vertical cylinder 38 of the lifting apparatus receives an impulse and the table returns to the initial height.
  • vertical cylinder 38 receives an impulse and lifts the stack so much that horizontal cylinder 36 can transfer the stack to the side of scales 28.
  • the cylinder of the stacking table receives an impulse and the table rises back to the initial height.
  • vertical cylinder 38 receives an impulse and lifts the stack to such a height that horizontal cylinder 36 can move the former on storage conveyor 39.
  • vertical cylinder 38 receives an impulse and lowers the stack on storage conveyor 39.
  • Horizontal cylinder 36 draws fork 37 away and storage conveyor 39 receives an impulse to move forward.
  • conveyor 39 has moved so much (4 times) that the stack of casting pigs has entirely passed lifting device 35
  • horizontal cylinder 36 transfers lifting device 35 between stacking table 11 and storage conveyor 39.
  • vertical cylinder 38 lowers fork 37 so as to be ready to take the next stack.
  • the binding takes place with steel bands 6 in the manner shown in FIG. 1.
  • the binding is carried out with one automatic binding machine which receives its impulses from storage conveyor 39.
  • the casting pig stack is thus always transferred to the right place for binding.
  • Stop plate 13 can be advantageously fitted so that it can be moved away from in front of the pig track, in which case two casting pigs are first allowed to collide with stop 13, whereafter stop 13 is moved aside and the pigs are transferred in pairs with their long sides against each other rectangularly between assembly cylinders 21 of the assembly station. The transfer can be carried out with transfer plate 25. Thereafter, the pigs turned with turning devices 29 and 32 are fitted to both ends of the pair of pigs with assembly cylinders 21 and a layer according to FIG. 3 is obtained.
  • a layer according to FIG. 4 can be assembled so that two pigs are first allowed to collide with stop 13, at which time a pair of pigs is obtained in which the pigs, for example In and 3a, have their long sides against each other. Pig pair 1a, 3a is then moved with cylinders 14 and 17 against stop plate 19 and the other pair of pigs 20, 4a is transferred with cylinders 14 and 18 against stop plate 20. Finally both pairs of pigs, la, 3a and 2a, 4a, are assembled by cylinders 21 into a layer according to FIG. 4.
  • a casting pig layer assembled in said first pattern is formed by laterally displacing two pigs with their long sides facing each other and then pushing onwards in a direction es sentially parallel to the casting pig track to an assembly station fitted behind the stop plate, and then transferring the other two pigs of the layer with their long sides facing each other to the assembly station, whereafter the casting pig pairs are combined.
  • a method according to claim 3, wherein the casting pig layer assembled in said second pattern is formed by moving the turned pigs forward to a point next to the assembly station in a direction substantially parallel to the casting pig track before they are moved towards the opposite ends of the pair of pigs at the assembly station.
  • a casting pig layer assembled in said first pattern is formed by transferring a first pig to one side of the casting pig track and a second pig to the opposite side of the track, whereafter the first pig is moved forward in a direction essentially parallel to the track to a point next to an assembly station fitted behind the stop plate, then a third pig is moved forward in a direction parallel to the track to a point next to the assembly station, whereafter a fourth pig is moved to the opposite side of the casting pig track and the third pig is moved next to the first pig so that their long sides face each other, then the pigs, which are in pairs on opposite sides of the assembly station, are combined into a layer at the assembly station, and the layer is finally transferred to the stacking station.
  • a casting pig layer assembled in said second pattern is formed by moving a first pig to one side of the casting pig track and from there forward in a direction parallel to the track to a point next to an assembly station fitted behind the casting pig track, whereafter a second pig is moved along the same track next to the first pig so that the long sides of the two face each other in a casting pig pair, a third pig is moved to one side of the casting pig track and turned, whereafter a fourth pig is moved to the opposite side of the casting pig track, then the third pig is moved forward in a direction parallel to the casting pig track to a point next to the casting pig pair, and the fourth pig is turned and moved forward in a direction parallel to the pig track to a point next to the assembly station, whereafter the pigs are transferred to the assembly station and combined into a layer which is transferred to the stacking station.
  • each assembled casting pig layer is transferred to the stacking station by lowering it by the height of one layer. the undermost layer of the casting pig bundle being assembled first and the topmost layer being assembled last.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)
  • Casting Devices For Molds (AREA)
US325442A 1972-01-27 1973-01-22 Method for stacking casting pigs into bundles Expired - Lifetime US3876094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI720221A FI47075C (fi) 1972-01-27 1972-01-27 Tapa latoa valuharkkoja harkkonipuiksi ja laite tavan soveltamiseksi.

Publications (1)

Publication Number Publication Date
US3876094A true US3876094A (en) 1975-04-08

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US325442A Expired - Lifetime US3876094A (en) 1972-01-27 1973-01-22 Method for stacking casting pigs into bundles

Country Status (7)

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US (1) US3876094A (xx)
JP (1) JPS5232510B2 (xx)
AU (1) AU474441B2 (xx)
BE (1) BE794612A (xx)
CA (1) CA974266A (xx)
FI (1) FI47075C (xx)
NL (2) NL173257C (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040525A (en) * 1975-09-22 1977-08-09 Mitsui Mining & Smelting Co., Ltd. Method and apparatus for stacking ingots according to predetermined arrangements
WO2004039709A1 (en) * 2002-10-25 2004-05-13 Spx Corporation Automatic ingot unloading device and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5827177B2 (ja) * 1975-10-08 1983-06-08 三井金属鉱業株式会社 インゴツトノハイレツツミカサネホウホウ オヨビ ソノソウチ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3442400A (en) * 1967-03-02 1969-05-06 Alvey Conveyor Mfg Co Carton palletizing apparatus
US3587876A (en) * 1968-11-25 1971-06-28 Power Curve Conveyor Co Pallet-loading apparatus
US3670906A (en) * 1970-01-14 1972-06-20 Miller Eng Corp Article loading system
US3757966A (en) * 1971-03-12 1973-09-11 J & J Manuf Co Palletizing apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3442400A (en) * 1967-03-02 1969-05-06 Alvey Conveyor Mfg Co Carton palletizing apparatus
US3587876A (en) * 1968-11-25 1971-06-28 Power Curve Conveyor Co Pallet-loading apparatus
US3670906A (en) * 1970-01-14 1972-06-20 Miller Eng Corp Article loading system
US3757966A (en) * 1971-03-12 1973-09-11 J & J Manuf Co Palletizing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040525A (en) * 1975-09-22 1977-08-09 Mitsui Mining & Smelting Co., Ltd. Method and apparatus for stacking ingots according to predetermined arrangements
WO2004039709A1 (en) * 2002-10-25 2004-05-13 Spx Corporation Automatic ingot unloading device and method

Also Published As

Publication number Publication date
JPS5232510B2 (xx) 1977-08-22
NL173257C (nl) 1984-01-02
NL7300783A (xx) 1973-07-31
JPS48103422A (xx) 1973-12-25
FI47075B (xx) 1973-05-31
NL173257B (nl)
DE2302396B2 (de) 1976-12-16
AU474441B2 (en) 1976-07-22
BE794612A (fr) 1973-05-16
CA974266A (en) 1975-09-09
AU5140373A (en) 1974-07-25
FI47075C (fi) 1973-09-10
DE2302396A1 (de) 1973-08-02

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