US2489479A - Feeding device for centrifugal casting machines - Google Patents

Feeding device for centrifugal casting machines Download PDF

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Publication number
US2489479A
US2489479A US715505A US71550546A US2489479A US 2489479 A US2489479 A US 2489479A US 715505 A US715505 A US 715505A US 71550546 A US71550546 A US 71550546A US 2489479 A US2489479 A US 2489479A
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US
United States
Prior art keywords
ladle
casting
feeding device
sector
pipe
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
US715505A
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English (en)
Inventor
Cavallier Jean Albert
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.)
POMPES NOEL SOC
POMPES NOEL Ste
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POMPES NOEL SOC
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Publication date
Application filed by POMPES NOEL SOC filed Critical POMPES NOEL SOC
Priority claimed from GB1672848A external-priority patent/GB647314A/en
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Publication of US2489479A publication Critical patent/US2489479A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
    • B22D13/107—Means for feeding molten metal

Definitions

  • the object of the present invention is an improved feeding device which provides a remedy for the aforementioned drawbacks.
  • the improved feeding device comprises a ladle of large capacity containing sufficient molten metal to cast successively several pipes.
  • the-ladle is provided with a single pouring spout and it is combined with control means such that it distributes successively, into a series of molds, the quantities of molten metal necessary for manufacturing several pipes or similar objects, consecutively.
  • the ladle is provided with two parallel spouts in such a way that during each of the successive casting operations, it distributes the metal into two molds.
  • Fig. 1 is a diagrammatical elevation view with partial sections, of an improved feeding device combined witha single mold.
  • Fig. 2 is the graph of the rotation of the ladle during the course of the successive working cycles, rotation angles of the ladle being shown along the ordinate andtime periods being shown along the abscissa.
  • Fig. 3 is a partial section on a greater scale, of the ladle shown before the beginning of the casting operation.
  • Fig. 4 is a side view corresponding to Fig. 8.
  • Said ladle is rotatably mounted on horizontal crankpins 2 and, its cylindrical inside surface 3, is coaxial with the crank-pins 2 in such a way that the quantity of molten metal poured through the spout 4 of the ladle is proportional to the angle of rotation of the said ladle.
  • a hopper 5 leading to a trough I mounted on a base 1 in an overhanging position.
  • the mold 8 is made to rotate around its axis XX, either horizontally as shown or slightly inclinedfrom the horizontal. Said mold is mounted inside a casing or carriage 9 moved by means of rollers l0, along a runway II and is able to be given a reciprocating movement by means of a hydraulic jack i2, the piston l3 of which is connected by the stem l4 and the bracket l5 to the casing 9.
  • the ladle l is tilted by the following mechanism: a bracket IS on the ladle is connected by a connecting rod Ila. to a piston no moving in a cylinder He. The latter is connected by a connecting rod H to a toothed sector l9 as shown at l8. ,Said toothed sector [9 rotates together with a drum 20.
  • secured at 22- is adapted to brake said drum when rotating in, the direction of arrow i
  • the free end of said brake band is connected to a lever carrying a counterweight 2-3 which is connected by an operating rod 24 to a handle 25.
  • a pinion 26 In mesh with the toothed sector is is a pinion 26, fitted on a shaft 21, at the extremity of which is keyed a sliding friction clutch or cone 28.
  • the cone 28 cooperates with a gear wheel 29,
  • the outlets of the valves 31 and 38 are branched in parallel to a pipe 39.
  • the pipe 39, fitted with a discharge, cock 40 leads to the aforesaid cylinder He by means of a flexible pipe 4
  • the pipe 39 is fedwith a compressed fluid through the medium of a three-way cook 42 inserted between the'inlet pipe 43 (provided with a cook 44) and the outlet pipe 45.
  • the spindle of the cook 42 is fitted with two pawls 45 and 41, staggered laterally and cooperating respectively with fingers 49, 48 correspondingly staggered carried by the carriage 9 for the mold.
  • the operation is as follows: In the initial inoperative position, the ladle I is horizontal and the cook 42 puts into communication, through its port 59, the inlet and outlet pipes 39, 45 in such a way that on the one hand, the contact between the clutch 28 and the gear wheel 29 is broken through the action of the spring 35 and on the other hand, the piston Ilb is at its low position. The discharge cook 40 is closed.
  • the ladle I is then filled with molten metal as far as level with the spout 4.
  • the carriage 9 is moved to the left (arrow P).
  • the projection 49 enters into contact with the pawl 46 and causes it to rock whereby the three way cock 50 is rotated and the pipe 39 is put in communication with the inlet 43.
  • compressed air is admitted, on the one hand into the cylinder He, thus causing the piston Nb and the connecting-rod IIa to rise and, on the other hand into the cylinder 34 causing the clutch 28 to engage the wheel 29.
  • the ladle Due to the rising of the piston I'Ib in the cylinder I 1c, the ladle rapidly turns in the direction of the arrow f, by an angle corresponding to the stroke of the piston Ilb. Said instantaneous rotation of the ladle is shown diagrammatically at a b in Fig. 2.
  • which is maintained constantly in rotation, drives the sector I9, through the medium of gear 29, clutch 28, shaft 21 and pinion 25.
  • the sector will thus ensure a further rotation of the ladle around its axis 2 in the direction of arrow j.
  • the nonreturn valve 38 is closed and the air contained in the cylinder 34 escapes towards the piping 39 through the medium of the regulating valve 31 forming a by-pass and a temporization device.
  • a retard is set up at the declutching of the cone 28 from the wheel 29 and during a short lapse of time.
  • the sector I9 continues to rotate, and to raise the ladle, the efiect of this is to bring the level of the molten metal flush with the spout 4, that .is to say in the departure position for a fresh casting operation.
  • the ladle should be allowed to drop for filling purposes. This is obtained by pulling the handle 25 upwardly. The effect of this is to raise the counterweight 23, to release the brake 2I and to free the drum 20. The sector I9 and the ladle I will then fall back under their own weights.
  • band brake 2i acts in a single direction and does not therefore present any opposition to the raising of the ladle at the moment of the castings.
  • the ladle I (Figs. 3 to 7) with a lid 52 whose lower face is provided with a refractory lining 53.
  • This lid rotatably mounted on the pivot 54, carried by bearings 55 fixed to the ladle is actuated by a crank arm 56 pivoted to a connecting-rod 51, which carries a handle 58, the connecting-rod being supported by a bracket 59, fixed to the ladle I.
  • the lid 52 is balanced by a counterweight 60 held by two arms 6
  • the lid 52 is provided with a depending rib 62 made of a refractory brick fitting between the side walls 53 of the ladle and dipping into the molten mass 5
  • the above device is used as follows: At the time of the filling, the workman in charge of the casting pulls the handle 58 to the right (Fig. 4) to open the ladle. He then fills the ladle with the molten metal and closes the lid, as soon as the filling is completed. During successive operations of casting, the liquid slag that may have ried by a vertical screw I3.
  • the metal which flows from the ladle is strictly clean and the spout 4 is kept in proper condition.
  • the metal walls of the ladle are preferably pierced with air-holes 64 for the evacuation of gases likely to escape from-the inner refractory brickwork 65 at the moment 01 its initial drying. when the ladle is manufactured.
  • Figs. 6 and 7 show a variation, intended for simultaneous feeding of two molds not shown, by means of two hoppers 5a and 5b and two troughs 8a and 6b.
  • the ladle I is fitted with two spouts 4a and 4b, opening above the tunnels or hoppers la and 51).
  • the ladle rests on two ball-joint bearings II and 12.
  • the hearing II is stationary while the bearing l2'is car- A screwthreaded handwheel I4, in engagement with said screw rests upon the base IS.
  • the casting of the pipes is conducted as explained above, the molten metal runs simultaneously from the two spouts 4a and 4b. Should one of the castings occur with a flow greater than that of the other or it the pipe obtained in one of the molds of the machine is heavier than the one obtained in the other mold, the handwheel I4 is turned in the desired direction so as to raise the ladle on the side corresponding to the casing that is too strong or to the pipe that is too heavy.
  • the brakedrum 20 is fitted loose on the axis 16 of the toothed sector 19.
  • the web of said drum is provided with an opening 11 in which can slide a projection 18 carried laterally by the sector l9.
  • the drum carries two abutment screws 19a and 19b screwedon angle pieces 80 fixed to the drum 20, said screws can bear upon the lateral faces of the projection 18.
  • the projection 18 acting upon the screw 19a causes the drum 20 to rotate in a clockwise direction.
  • the sector I! is free to rotate downwardly by a certain angle, until the projec- 6 4/ tion 18 comes to rest on the screw 19b carried by the drum 20 whose rotation is prevented in that direction by the brake band.
  • the fall of the ladle is increased by a quantity proportional to the lost motion existing between the projection 18 and the screw 191;.
  • the hydraulic or pneumatic control described can be replaced by any other system of control. electric for instance.
  • a movable carriage for supporting -a pipe mold, a ladle associated therewith for pouring molten metal into said mold, means for tilting said ladle comprising cooperating quick acting fluid pressure means and slow acting mechanical means, said mechanical means including a gear sector and means for driving same, a rod having a fluid responsive cylinder therein comprising said quick acting fluid pressure means, said rod connecting said sector with said ladle.
  • fluid actuated means to operatively connect said gear sector to said driving means
  • a control means means on said carriage for actuating said control means upon movement 01' said carriage towards said ladle to actuate said fluid pressure means to initiate tilting of said ladle and to operatively connect the fluid actuatedmeans to said gear sector to actuate the latter, and means for maintaining the pressure in the fluid pressure cylinder while the mechanical means is simultaneously actuated to continue the tilting as soon as said initial tilting is begun.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
US715505A 1945-12-20 1946-12-11 Feeding device for centrifugal casting machines Expired - Lifetime US2489479A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2489479X 1945-12-20
GB1672848A GB647314A (en) 1948-06-22 1948-06-22 Improvements in centrifugal casting machines

Publications (1)

Publication Number Publication Date
US2489479A true US2489479A (en) 1949-11-29

Family

ID=32232300

Family Applications (1)

Application Number Title Priority Date Filing Date
US715505A Expired - Lifetime US2489479A (en) 1945-12-20 1946-12-11 Feeding device for centrifugal casting machines

Country Status (4)

Country Link
US (1) US2489479A (pt)
BE (1) BE481384A (pt)
DE (1) DE976965C (pt)
FR (1) FR999303A (pt)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149503B (de) * 1960-03-25 1963-05-30 Cie De Pont A Mousson Sa Vorrichtung zur Betaetigung der Giesspfanne von Schleudergiessmaschinen
US3121266A (en) * 1960-04-11 1964-02-18 Rich Mfg Company Of California Centrifugal mold closure assembly
US4112998A (en) * 1975-10-22 1978-09-12 Fujiwa Kika Kabushiki Kaisha Pouring method and apparatus therefor
US4221309A (en) * 1977-09-12 1980-09-09 Maschinenfabrik & Eisengiesserei Ed. Mezger Ag Ladle tilting apparatus

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1088293A (en) * 1908-05-06 1914-02-24 Almon E Norris Controlling device.
US1089139A (en) * 1913-07-05 1914-03-03 Charles William Lummis Apparatus for pouring molten materials.
US1146573A (en) * 1914-07-10 1915-07-13 Charles F Jacobs Metallurgical implement.
US1693654A (en) * 1927-10-07 1928-12-04 Sand Spun Patents Corp Centrifugal casting machine
US1701530A (en) * 1927-12-14 1929-02-12 Us Cast Iron Pipe & Foundry Co Centrifugal casting machine
US1749083A (en) * 1929-03-18 1930-03-04 Wetherill Morris Engineering C Apparatus for pouring liquids such as molten metal
GB340129A (en) * 1929-04-12 1930-12-24 Aurelio Possenti Arrangement for supplying molten metal to machines for the centrifugal casting of hollow bodies
US1815093A (en) * 1929-05-20 1931-07-21 Alti Forni Fonderie Acciaierie Centrifugal tube-casting apparatus
US1861742A (en) * 1929-12-06 1932-06-07 United Eng & Constructors Inc Automatic timing valve
US1959334A (en) * 1933-02-18 1934-05-22 Centrifugal Pipe Corp Centrifugal casting
US2094736A (en) * 1934-12-17 1937-10-05 Whiting Corp Foundry ladle
US2429145A (en) * 1942-12-26 1947-10-14 Himself And Lew W Cleminson Mold for casting metals

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE157821C (pt) *
DE94385C (pt) *
DE242307C (pt) *
AT54461B (de) * 1911-12-29 1912-07-25 Gustav Brozek Gießpfanne, Gießtiegel und dgl. mit am Deckel angebrachter Zunge zur Verhinderung des Schlackenausflusses.
DE444050C (de) * 1924-02-15 1927-05-28 Gelsenkirchener Bergwerks Ag Verfahren und Vorrichtung zum Einleiten des Giessmetalls in Schleudergussformen
US1813381A (en) * 1928-06-08 1931-07-07 Ferric Engineering Company Casting ladle
DE539290C (de) * 1930-10-15 1931-11-27 Ver Stahlwerke Akt Ges Schleudergussform
DE701475C (de) * 1939-08-19 1941-01-17 Eisenwerke Akt Ges Deutsche Verfahren und Vorrichtung zum gleichzeitigen Giessen mehrerer Hohlkoerper in einer Schleudergussmaschine
DE704037C (de) * 1939-08-20 1941-03-21 Eisenwerke Akt Ges Deutsche Verfahren und Vorrichtung zum gleichzeitigen Giessen mehrerer Hohlkoerper in einer Schleudergussmaschine

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1088293A (en) * 1908-05-06 1914-02-24 Almon E Norris Controlling device.
US1089139A (en) * 1913-07-05 1914-03-03 Charles William Lummis Apparatus for pouring molten materials.
US1146573A (en) * 1914-07-10 1915-07-13 Charles F Jacobs Metallurgical implement.
US1693654A (en) * 1927-10-07 1928-12-04 Sand Spun Patents Corp Centrifugal casting machine
US1701530A (en) * 1927-12-14 1929-02-12 Us Cast Iron Pipe & Foundry Co Centrifugal casting machine
US1749083A (en) * 1929-03-18 1930-03-04 Wetherill Morris Engineering C Apparatus for pouring liquids such as molten metal
GB340129A (en) * 1929-04-12 1930-12-24 Aurelio Possenti Arrangement for supplying molten metal to machines for the centrifugal casting of hollow bodies
US1815093A (en) * 1929-05-20 1931-07-21 Alti Forni Fonderie Acciaierie Centrifugal tube-casting apparatus
US1861742A (en) * 1929-12-06 1932-06-07 United Eng & Constructors Inc Automatic timing valve
US1959334A (en) * 1933-02-18 1934-05-22 Centrifugal Pipe Corp Centrifugal casting
US2094736A (en) * 1934-12-17 1937-10-05 Whiting Corp Foundry ladle
US2429145A (en) * 1942-12-26 1947-10-14 Himself And Lew W Cleminson Mold for casting metals

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149503B (de) * 1960-03-25 1963-05-30 Cie De Pont A Mousson Sa Vorrichtung zur Betaetigung der Giesspfanne von Schleudergiessmaschinen
US3121266A (en) * 1960-04-11 1964-02-18 Rich Mfg Company Of California Centrifugal mold closure assembly
US4112998A (en) * 1975-10-22 1978-09-12 Fujiwa Kika Kabushiki Kaisha Pouring method and apparatus therefor
US4221309A (en) * 1977-09-12 1980-09-09 Maschinenfabrik & Eisengiesserei Ed. Mezger Ag Ladle tilting apparatus

Also Published As

Publication number Publication date
DE976965C (de) 1964-10-01
FR999303A (pt) 1952-01-29
BE481384A (pt)

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