US3662815A - Device for locking and extracting a centrifugal casting shell and removing the cast part from the shell - Google Patents

Device for locking and extracting a centrifugal casting shell and removing the cast part from the shell Download PDF

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Publication number
US3662815A
US3662815A US111223A US3662815DA US3662815A US 3662815 A US3662815 A US 3662815A US 111223 A US111223 A US 111223A US 3662815D A US3662815D A US 3662815DA US 3662815 A US3662815 A US 3662815A
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US
United States
Prior art keywords
shell
extracting
sleeve
carriage
locking
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
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US111223A
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English (en)
Inventor
Jean Roger Bouyt
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.)
Pont a Mousson SA
Centre de Recherches de Pont a Mousson
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Pont a Mousson SA
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Filing date
Publication date
Application filed by Pont a Mousson SA filed Critical Pont a Mousson SA
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Publication of US3662815A publication Critical patent/US3662815A/en
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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
    • B22D13/101—Moulds
    • B22D13/104—Cores
    • 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
    • B22D13/108—Removing of casting

Definitions

  • ABSTRACT Device for locking a shell in, or extracting the shell from, a sleeve of a centrifugal casting machine for casting tubular parts.
  • the device has tong means for extracting the part which are connected to an extracting carriage movable in the axial extension of the sleeve.
  • Locking means for locking the shell in the sleeve are combined with a head having a flange and connected to move axially with the shell. Hooking members pivotably mounted with respect to the carriage cooperate with the flange and are adapted to exert a push or a pull on the head and shell for respectively locking or unlocking the shell.
  • the extracting carriage also carries counter-support abutments for the sleeve.
  • the present invention relates to the extraction of centrifugally cast tubular parts and more particularly to a device for locking a casting shell to and extracting the casting shell from a shell-carrying sleeve and for removing the cast part.
  • This device is particularly applicable to the casting of liners of internal combustion engines.
  • An object of the invention is to provide an improved device for locking a shell to a rotary support sleeve so that the shell rotates with the sleeve, unlocking the shell for extracting it, extracting the shell and removing the cast part.
  • the invention provides a device which is applicable to a shell having a projection precluding removal of the cast part at the end of the shell from which the shell is extracted but allowing the removal of the cast part at the other end of this shell and is of the type having inner extracting tongs for extracting the cast tubular part and an extracting carriage movable in the axial extension of a sleeve carrying the shell, wherein the locking members for locking the shell in the sleeve are combined with a head which is axially integral with the shell and provided with a flange co-operating with push and pull hooks capable of acting on the flange for locking and unlocking the shell, said hooks being pivoted to the extracting carriage which carries counter-support abutments for the sleeve carrying the shell.
  • the shell is locked very reliably by the pivoted hooks and unlocked in a definite and reliable manner by the same hooks and with the aid of a counter-support on the shell-carrying sleeve.
  • This arrangement results in a smooth production procedure lending itself to an automatic production system on a'turntable or moulding line owing to the fact that the shell is always mounted torotate and extracted correctly.
  • the invention is particularly applicable to centrifugal casting machines having a rotarysleeve carrying twin shells placed in end-to-end relation for casting apart which extends in the two shells and is such that the part is capable of affording two engine liners.
  • FIG. 1 is a diagrammatic longitudinal sectional view of a device according to the invention in the locking position
  • FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1;
  • FIG. 3 is a view similar to FIG. 1 and shows the device in the shell-unlocking and extracting position
  • I FIGS. 4 and 5 are diagrams on a scale smaller than that of the FIGS. 1-3, illustrating the stages of extraction and removal of a cast tubular part.
  • the invention is applied to a centrifugal casting machine comprising a sleeve A supporting shells or moulds and mounted on rollers B and driven in rotation at a speed for centrifugal casting, and an extracting carriage C movable in the extension of the axis of the sleeve A.
  • twin shells or moulds l and 1 mounted in the sleeve A are twin shells or moulds l and 1 in end-to-end relation and adjoining in a median transverse which are separated,'after removal from the shells,by severing along the transverse'plane Y-Y.
  • the shell 1 has, at the end thereof adjacent the extracting carriage C, a flange 2 which extends inwardly and defines one of the end faces of the part D and thus "precludes the direct removal of the part D in the direction toward the carriage C.
  • This extracting carriage C has a cylinder device 3 for shifting an extracting means having jaws 4 which are capable of spreading apart or moving towards each other inside the cast double liner D.
  • a tubular connecting member or head 5 is fixed axially to the shell 1" by means of screws 6.
  • This head comprises a trapezoidal outer recess 7 into 'which radial locking fingers 8 are capable of extending.
  • the fingers 8 extend through the sleeve A and are biased in the direction of the axis XX by the action of springs, such as 8.
  • the head 5 also comprises a flange 9 on which push and pull forces may be exerted in the axial direction by a system which will now be described.
  • each arm 10 Fixed to the cylinder device 3 are two pairs of twin arms 10. These pairs of arms are symmetrically arranged with respect to the axis XX. Pivoted near the end of each arm 10 is a U- shaped hook 11 whose ends constitute two fingers l l and 11 which are located on each side of the flange 9 of the head 5. The hooks are pivoted in pairs on a pin 12 carried by the two arms 10 of a pair of arms.
  • the carriage C also carries a pair of cylinder devices 13 which are arranged symmetrically with respect to the axis X--X and adapted to turn the hooks 11 about their pins 12 through shifting arms 14 (FIGS. 1 and 2).
  • a ring 16 Mounted at the end of the extracting device 3 through at least one arm 15 is a ring 16 having an axis XX. Extending axially through the ring 16 are fingers 17 which are adapted to exert a thrust on the flange 9 of the head and are capable of being shifted by end fingers 11 of the hooks '11.
  • Each arm 10 terminates beyond the pivotal connection 12 in an abutment 18 which constitutes a counter-support for the sleeve A.
  • the device operates in the following manner:
  • the shells or moulds 1 and 1" are placed inside the sleeve A and the head 5 integral with the shell 1" is locked in position by the radial fingers 8 which are urged into recess 7 by the action of their springs 8".
  • the latter resist the effect of centrifugal forces produced by the rotation of the sleeve A.
  • the carriage C, carrying the tongs having the jaws 4, the hooks 11, the thrust fingers 17 and the counter-support abutment 18, is withdrawn, that is, shifted away from the centrifugal casting machine and thus from the sleeve A, to permit the introduction of the molten metal in the shells 1", 1".
  • the carriage C is shifted towards the sleeve A for the purpose of unlocking and extracting the shell 1 and the cast part D, the shell 1' remaining inside the sleeve A.
  • the cylinder device 3 After having stopped the rotation of the sleeve A and moved the extracting carriage C towards this sleeve, the cylinder device 3 is supplied with fluid under pressure in such manner as to spread apart the jaws 4 of the extracting tongs (FIG. 3) Thus the cast part D is rendered integral with the shell 1" and can be extracted at the same time as the shell 1".
  • the cylinder devices 13 are supplied in such manner as to tilt the hooks 11 in such direction that their ends 1 1 exert an extracting thrust on the flange 9 of the head 5.
  • the tilting of the hooks 11 exert an unlocking or extracting force on the flange 9 of the head 5.
  • This thrust causes the radial locking fingers 8 to move out of the locking recess 7 while the axial fingers 17 are urged back by the flange 9 of the head 5.
  • This flange is then applied against the ring 16 and rendered rigidly secured to the extracting carriage C.
  • the shell 1 and the part D are also rendered integral with the carriage C.
  • the extracting stage now starts (FIGS. 3, 4 and In moving rearwardly, the carriage C disengages the head 5 and the shell 1 and the part D from the sleeve A (FIG. 3) while the shell 1" remains in the latter (FIG. 4). This is possible since the shell 1 has no inner projection preventing movement of the part D.
  • This part D, which is completely disengaged from the shell 1 is then seized by a tongs P while the cylinder device 3 is supplied in such manner as to release the jaws 4 (FIG. 4).
  • the carriage C continues to travel rearwardly while the part D is gripped by the fixed tongs P. This results in the complete disengagement of the part D from the shell 1.
  • the part D is completely stripped of its shell or mould (FIG. 5).
  • the part D held by the tongs P is discharged by a handling device (not shown).
  • the extracting carriage C is moved towards the sleeve A so as to introduce the shell 1.
  • the extracting cylinder device 3 is supplied in such manner that the jaws 4 remain close together (FIG. 1).
  • the cylinder devices 13 first remain supplied in such manner as to cause the ends 11 of the hooks 11 to apply the flange 9 of the head 5 against the ring 16 and support the head 5 and the shell 1 and cause them to move in translation with the carriage C.
  • the carriage C stops. In this position (FIG. 3), the head 5 is not yet locked.
  • the cylinder devices 13 are then supplied in such manner as to turn the hooks 11 in such direction that their ends 11 exert a thrust on the fingers 17. This locking thrust is transmitted to the flange 9 of the head 5 (FIG. 1).
  • the recess 7 of the head is then in alignment with the radial locking fingers 8 which first resiliently withdrew, in opposition to the action of their return springs 8, to pass over the circular crest defining the inner end of the recess 7 and then move radially forward into the recess 7 under the action of the springs 8.
  • the shell 1 is locked in position by the head 5 and the radial fingers 8.
  • the extracting carriage C can then once more withdraw in moving rearwardly so as to make way for the molten metal pouring device.
  • the shell 1 is locked in position and the locking and unlocking operations can be carried out since the trapezoidal shape of the recess 7, combined with the rounded shape of the ends of the radial fingers 8, enables the ends of the latter to pass over the annular crest defining the inner end of the recess 7.
  • thrust fingers 17 transmit an axial thrust force to the head 5.
  • said hooking means being pivoted to said extractin carriage counter-support axial abutment means for said s eeve an mounted on said carriage.
  • a device as claimed in claim 1, wherein said hooking means are U-shaped members having two end fingers located on each side of said flange, one end finger being operative for pulling said head and the other end finger being operative for pushing said head.
  • a device as claimed in claim 1 comprising in axial extension of and in spaced relation to said extracting carriage a support ring which is fixed with respect to said carriage and is in coaxial relation to said sleeve and to said head, and thrust members for transmitting the push of said pushing fingers to said flange extending through said ring, said thrust members being parallel to the axis of said ring.
  • a device as claimed in claim 1 comprising arms fixed in cantilever fashion to said extracting carriage, said arms carrying said counter-support abutment means for axially supporting said sleeve, said hooking means comprising members which are pivoted to said arms and have second arms connected to cylinder devices mounted on the extracting carriage and capable of pivoting said second arms.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Casting Devices For Molds (AREA)
US111223A 1970-02-04 1971-02-01 Device for locking and extracting a centrifugal casting shell and removing the cast part from the shell Expired - Lifetime US3662815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7003938A FR2091860A1 (xx) 1970-02-04 1970-02-04

Publications (1)

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US3662815A true US3662815A (en) 1972-05-16

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US111223A Expired - Lifetime US3662815A (en) 1970-02-04 1971-02-01 Device for locking and extracting a centrifugal casting shell and removing the cast part from the shell

Country Status (9)

Country Link
US (1) US3662815A (xx)
JP (1) JPS501453B1 (xx)
CS (1) CS190354B2 (xx)
DE (1) DE2101867A1 (xx)
ES (1) ES388040A1 (xx)
FR (1) FR2091860A1 (xx)
GB (1) GB1313811A (xx)
SE (1) SE375713B (xx)
SU (1) SU404203A3 (xx)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833049A (en) * 1972-01-24 1974-09-03 Gen Electric Method for automatically stripping a sectionalized mold from a cast
US4956008A (en) * 1986-09-22 1990-09-11 Rockwell International Corporation Apparatus for superplastic forming and ejection of a part from a die
US5626050A (en) * 1994-12-08 1997-05-06 Aluminum Company Of America Method of making metal ball bats
US6425436B1 (en) * 2000-06-16 2002-07-30 Amsted Industries Incorporated Sand core breaking apparatus
CN101879586A (zh) * 2010-06-25 2010-11-10 洛阳伟江机械制造有限公司 一种离心铸造机铸型的锁紧机构
CN103586621A (zh) * 2013-11-28 2014-02-19 昆山华恒焊接股份有限公司 管件法兰焊接定位装置
CN110814311A (zh) * 2019-12-10 2020-02-21 安徽省岳西缸套有限公司 一种缸套离心铸造工艺
CN111014609A (zh) * 2019-12-10 2020-04-17 安徽省岳西缸套有限公司 脱模装置
CN111347024A (zh) * 2020-04-08 2020-06-30 河北新兴铸管有限公司 一种锁紧芯架

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5267818U (xx) * 1975-11-13 1977-05-19
FR2428782A1 (fr) * 1978-06-13 1980-01-11 Pont A Mousson Elements tubulaires en acier pour conduites en mer
FR2545740B1 (fr) * 1983-05-11 1985-07-12 Pont A Mousson Dispositif de support de noyau d'emboitement pour moule centrifuge de tuyaux en fonte a emboitement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1723792A (en) * 1928-01-19 1929-08-06 Us Cast Iron Pipe & Foundry Co Machine for drawing pipes from molds
DE504420C (de) * 1926-10-05 1930-08-12 Halbergerhuette G M B H Vorrichtung zum Einsetzen und Ausziehen von Muffenkernen fuer Rohre bei Schleudergussmaschinen
AT180663B (de) * 1952-11-10 1955-01-10 Tiroler Roehren & Metallwerk Muffenkern für Schleudergießkokillen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE504420C (de) * 1926-10-05 1930-08-12 Halbergerhuette G M B H Vorrichtung zum Einsetzen und Ausziehen von Muffenkernen fuer Rohre bei Schleudergussmaschinen
US1723792A (en) * 1928-01-19 1929-08-06 Us Cast Iron Pipe & Foundry Co Machine for drawing pipes from molds
AT180663B (de) * 1952-11-10 1955-01-10 Tiroler Roehren & Metallwerk Muffenkern für Schleudergießkokillen

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833049A (en) * 1972-01-24 1974-09-03 Gen Electric Method for automatically stripping a sectionalized mold from a cast
US4956008A (en) * 1986-09-22 1990-09-11 Rockwell International Corporation Apparatus for superplastic forming and ejection of a part from a die
US5626050A (en) * 1994-12-08 1997-05-06 Aluminum Company Of America Method of making metal ball bats
US6425436B1 (en) * 2000-06-16 2002-07-30 Amsted Industries Incorporated Sand core breaking apparatus
CN101879586A (zh) * 2010-06-25 2010-11-10 洛阳伟江机械制造有限公司 一种离心铸造机铸型的锁紧机构
CN103586621A (zh) * 2013-11-28 2014-02-19 昆山华恒焊接股份有限公司 管件法兰焊接定位装置
CN103586621B (zh) * 2013-11-28 2015-12-02 昆山华恒焊接股份有限公司 管件法兰焊接定位装置
CN110814311A (zh) * 2019-12-10 2020-02-21 安徽省岳西缸套有限公司 一种缸套离心铸造工艺
CN111014609A (zh) * 2019-12-10 2020-04-17 安徽省岳西缸套有限公司 脱模装置
CN110814311B (zh) * 2019-12-10 2021-11-19 安徽玄同机电科技有限公司 一种缸套离心铸造工艺
CN111347024A (zh) * 2020-04-08 2020-06-30 河北新兴铸管有限公司 一种锁紧芯架

Also Published As

Publication number Publication date
SE375713B (xx) 1975-04-28
CS190354B2 (en) 1979-05-31
GB1313811A (en) 1973-04-18
DE2101867A1 (xx) 1971-10-07
FR2091860A1 (xx) 1971-01-21
ES388040A1 (es) 1973-05-01
SU404203A3 (xx) 1973-10-26
JPS501453B1 (xx) 1975-01-18

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