EP0127788A1 - Vorrichtung zum Handhaben und Anbringen eines Muffenkerns in eine Schleudergussmaschine zum Giessen von gusseisernen Muffenrohren - Google Patents

Vorrichtung zum Handhaben und Anbringen eines Muffenkerns in eine Schleudergussmaschine zum Giessen von gusseisernen Muffenrohren Download PDF

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Publication number
EP0127788A1
EP0127788A1 EP84105099A EP84105099A EP0127788A1 EP 0127788 A1 EP0127788 A1 EP 0127788A1 EP 84105099 A EP84105099 A EP 84105099A EP 84105099 A EP84105099 A EP 84105099A EP 0127788 A1 EP0127788 A1 EP 0127788A1
Authority
EP
European Patent Office
Prior art keywords
support
crown
core
shaft
axis
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.)
Granted
Application number
EP84105099A
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English (en)
French (fr)
Other versions
EP0127788B1 (de
Inventor
Pierre Fort
Michel Pierrel
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
Original Assignee
Pont a Mousson SA
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 Pont a Mousson SA filed Critical Pont a Mousson SA
Priority to AT84105099T priority Critical patent/ATE23683T1/de
Publication of EP0127788A1 publication Critical patent/EP0127788A1/de
Application granted granted Critical
Publication of EP0127788B1 publication Critical patent/EP0127788B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • B22D13/02—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
    • 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

Definitions

  • the present invention relates to a device for handling and laying an interlocking core for a centrifugal casting machine for interlocking cast iron pipes.
  • Such a machine comprises a casting shell rotatably mounted in a casing provided with means for cooling the shell and a casting channel, this channel being capable of traversing the entire length of the shell, inside this in order to pour liquid iron into it during a relative translational movement between the casing of the machine and the channel.
  • the shell which gives the outside shape of the cast iron pipe receives at one end a core giving the inside shape of the socket of the pipe.
  • This core of molding sand which can be used for a single casting, that is to say for a single centrifuged pipe, is replaced after each casting. It is brought and placed at the end of the shell by means of a handling and laying support device which is the subject of the invention.
  • Patent FR-A-2 314 790 discloses a support device for handling and laying a nesting core at the end of a centrifugation shell, which is articulated on a horizontal shaft carried by the casing of the machine, which can rotate by rotation around this shaft between a high position, retracted above the interlocking end of the shell, and a low position for introducing the core into the shell.
  • This support device has two parts, both mounted to rotate around the same horizontal shaft of rotation under the opposing actions of a jack and a counterweight: a support for core proper which is retracted upwards during casting, and a support element which is retracted upwards to receive a new core but which remains in the lowered position of axial support of the core inside the shell during casting.
  • This device has the advantage of only requiring the operator to place a new core on the support in the upwardly retracted position. In addition, it offers good visibility inside the nesting of the shell when the core is applied to it during casting. It is ideal for cores with small diameters (for example less than 300 mm) which an operator can easily place on their support in the high position, without excessive fatigue, due to the limited weight of the core.
  • the invention therefore aims to provide a support device, handling and installation of portable cores by an operator, to reduce the fatigue thereof, by a more comfortable position of the support for the establishment of a new nucleus.
  • the device for handling and laying a core targeted by the invention comprises a tilting support mounted on the end of the centrifugal casting machine, tilting around a horizontal shaft under the action of a jack carried by the machine, and receiving means for gripping and supporting the core, arranged to introduce the latter into a centrifugal casting shell of the machine when the jack tilts said support.
  • the means for gripping and supporting the core are pivotally mounted on the support around an axis of rotation orthognal to the aforementioned shaft, under the action of a control jack, and comprise an articulated crown directly on said support around the orthognal axis so that the general plane of this crown always remains inclined at an acute angle on the orthognal pivot axis, this angle being open downwards when the crown and its support are lowered, in order to present on an inclined plane substantially at the height of the operator's arms and laterally to the machine the means for gripping the core.
  • the device according to the invention ensures a comfortable position for the operator for laying portable cores away from the heat coming from the molded pipe, but this device also ensures a safety position, since the operator is on the side of the machine, out of the path of the extractor carriage of the molded pipe out of the shell.
  • the device for handling and laying nesting cores such as the core 36 shown in the drawings is arranged to equip the end of a centrifugal casting machine C with interlocking cast iron pipes.
  • the CO casting machine comprises a shell 1 housed in a casing 2, and rotatably driven around an axis of revolution XX.
  • the assembly thus produced can move on parallel rails 3 by means of rollers 4, along the longitudinal axis XX, in the direction of a weir 5 bringing the liquid metal into the shell 1 by means of a pouring channel 6 mounted in a fixed manner and independent of the CO machine.
  • the core 36 made of agglomerated sand ( Figure 4), is placed in the nesting end of the shell 1 before the start of the centrifugal casting, so as to delimit an annular volume 42 with the end of the shell 1, this volume 42 being filled with liquid metal during casting in order to form the interlocking of the pipe.
  • the core handling and laying device 36 designated by the general reference M, comprises a tilting support 7 mounted on the end of the casting machine CO, in the shape of a stirrup and tilting around a horizontal shaft 8 of axis YY, orthogonal to axis XX.
  • the shaft 8 can pivot at its ends in two bearings 9 and 10 rigidly fixed to each of the upper corners of the casing 2 and substantially in line with the lateral flanks of the latter, so that the vertical median plane of the shaft 8 along YY is practically coincident with the plane of the end face 11 of the casing 2.
  • the tilting support 7 in the form of a U or a short branches yoke lengths substantially equal, inverted at 90 ° to the left by observing Figures 1 and 3 with branches 22, 23 open below and above respectively the axis XX, the lower branch 22 being narrower than the upper branch 23 secured to the shaft 8.
  • the support 7 can tilt around the latter under the action of a jack 29 mounted laterally on the CO machine.
  • the support 7 receives gripping means and support for the core 36 arranged to introduce the latter in the shell 1 when the jack 29 switches the support 7.
  • the means for gripping and supporting the core 36 are pivotally mounted on the support? around an axis of rotation ZZ orthognal to the shaft 8, under the action of a control jack 38.
  • These means comprise a ring 31 articulated directly on the support 7 around the orthogonal axis ZZ, so that the general plane of the crown 31 always remains inclined by an acute angle D ( Figures 3 and 4) on the pivot axis ZZ, this angle D being open downwards when the crown 31 and its support 7 are lowered.
  • the crown 31 is part of a cylinder head CL schematically shown in Figures 2 to 4 and 6, and which cooperates with a bowl 43 for supporting and placing the core 36 in the shell 1.
  • the cylinder head CL and the bowl 43 can be carried out in a known manner, for example in accordance with patent FR-A-2,051,993 or patent FR-A-2,053,388, and will therefore not be described in more detail.
  • the crown 31 is articulated around the orthogonal axis Z-Z by pins 32, 33 of which the furthest 33 from the tilting shaft 8 of the support 7, is extended by an offset arm 34 perpendicular to the orthognal axis Z-Z.
  • the crown 31 is fixed to the arm 34 at a location diametrically opposite to that of the fastening of the pin 32 closest to the shaft 8, so that the crown 31 is inclined at an acute angle D on its pivot axis ZZ , which makes it possible to present it to the operator in the manner of a desk to receive a core 36 ( Figure 3).
  • the pins 32, 33 are respectively mounted in bearings 25 and 24 fixed at the ends branches 23 and 22 of the support 7, these bearings 24, 25 being coaxial with the axis ZZ.
  • the support 7 is provided laterally with a head 27 (Figure 1) fixed to said support, and on which a yoke 28 is articulated forming the end of the rod of the jack 29, itself articulated around a pin 30 integral of the side wall of the casing 2.
  • the arrangement is such that the axis of translation TT of the jack 29 is in a vertical plane, the support 7 thus being able to tilt under the action of the jack 29 around the shaft 8 in order to take angular positions from its highest retracting position above the CO machine (Figure 6, angle A) to its lowest position for placing the core 36 in the socket of the shell 1 ( Figure 6, angle C).
  • the support 7 and the crown 31 can take all the intermediate positions, such as the position illustrated in Figure 6 in which the support 7 forms with the plane of the end face 11 of the CO machine a angle B.
  • the angular movement between the extreme positions corresponding to angles A and C is approximately 80 * .
  • a jack 38 d horizontal axis UU is articulated inside a yoke 39 secured to a console 40 ( Figures 1 and 3) fixed laterally to the support 7 substantially at the same level as the connecting rod head 27 (in Figure 1, the console 40 and its yoke 39 have not been shown so as not to mask the end of the jack 29).
  • the rod 38a of the jack 38 is articulated in a yoke 37 integral with the upper part of the crown 31. The latter can thus pivot around the axis ZZ under the action of its actuating cylinder 38, of course always remaining inclined by an angle (D) on said axis ZZ.
  • the jack 38 mounted on the support 7 therefore follows the pendulum movement of the latter and can thus, independently of this movement, rotate the crown 31 around the axis ZZ in an angular range between 0 ° and more than 90 ".
  • the 0 ° position of the crown 31 is illustrated in Figures 1, 2, 4 and 6, while the angular spacing of 90 ° relative to the general plane of the support 7 is visible in Figure 3, when the crown 31 is suitably presented to the operator 35.
  • the invention provides that the bearing 25, which is closest to the tilting shaft 8, forms a nut for receiving an adjustment screw with a handwheel 60.
  • This screw thus makes it possible to adjust along the axis Z-Z the position of the crown 31 integral in translation with said screw, by a screw-nut movement.
  • the shaft 8 for rotating the support 7 is provided with means for adjusting its transverse position relative to the casting machine CO, an exemplary embodiment of which is illustrated in FIG. 5.
  • the aforementioned adjustment means thus comprise in this example, a screw 16 coaxial at one end 8a of the shaft 8 engaged in the bearing-nut 10 of support integral with the machine CO.
  • the end portion 15 of the screw 16 being introduced into the end 8a and thus secured in translation with the shaft 8, the screw 16 is screwed into the bearing-nut 10 and is provided with a control wheel 17.
  • the rotation of the latter makes it possible to move the shaft 8 along its axis Y-Y and the tilting support 7 between the bearings 9 and 10.
  • the support 7 is lowered by retracting the rod of the jack 29, until the cylinder head CL comes to bear against the bowl 43 secured to the shell 1 rotating at low speed, by its centrifugal keys.
  • the cylinder head CL is automatically locked on the bowl 43 while, during this time, the support 7 is maintained in its lowest position, illustrated in FIGS. 1, 4 and 6, so as to form an angle C of approximately 15 * between the axis ZZ and the end face 11.
  • the extraction of the bowl 43 then takes place by raising the support 7 towards its initial retracted position, that is to say until it makes an angle At approximately 110 * with the end face 11, the cylinder head CL remaining in engagement with the bowl 43 extracted from the shell 1 after erasing these centrifugal keys, when the rotation of the shell 1 is stopped.
  • the extraction of the bowl 43, the core 36 separates automatically from the latter and disintegrates mechanically in a natural manner, a very small tearing force being sufficient for the support 7 to allow this separation.
  • the bowl 31 is pivoted by actuating its control cylinder 38 so as to present it in the desired angular position ( Figures 3 and 6) at the operator 35 to allow the latter to place a new core 36 on the bowl 43 locked on the cylinder head CL.
  • the presentation of the bowl 43 to the operator 35 in the manner of a desk which is suitably inclined as a function of the morphology of the operator is advantageous and ergonomic in that it very significantly facilitates the placement of cores 36 relatively heavy.
  • This suitable inclination of the bowl 43 is made possible by the angular offset of the crown 41 by the arm 34.
  • this arrangement also has the advantage of allowing the operator 35 to work in complete safety, while remaining away from the dangerous zones of the casting machine C0, since he can thus set up the successive cores 36 while remaining laterally away from the CO machine, out of the path of the extractor E on its undercarriage, and heat radiation.
  • the essential advantage of the invention consists in the fact that the crown 31 can be presented laterally to the operator 35, suitably inclined in the manner of a desk, which facilitates repeated laying during of a work period, of relatively heavy nesting cores 36.
  • the arrangement provided by the invention significantly improves the safety of the operator 35, who can set up the successive cores while remaining on the side of the machine.
  • the angle D of inclination of the crown 31 on the axis ZZ can vary appreciably, as can the inclination B of the support 7, depending on the morphology of the operator in order to offer him- ci the most suitable ergonomic plan for fitting the socket cores 36.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Induction Machinery (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Centrifugal Separators (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Coating Apparatus (AREA)
  • Joints With Sleeves (AREA)
EP84105099A 1983-05-27 1984-05-05 Vorrichtung zum Handhaben und Anbringen eines Muffenkerns in eine Schleudergussmaschine zum Giessen von gusseisernen Muffenrohren Expired EP0127788B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84105099T ATE23683T1 (de) 1983-05-27 1984-05-05 Vorrichtung zum handhaben und anbringen eines muffenkerns in eine schleudergussmaschine zum giessen von gusseisernen muffenrohren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8308855 1983-05-27
FR8308855A FR2546428B1 (fr) 1983-05-27 1983-05-27 Dispositif de manutention et de pose d'un noyau d'emboitement pour machine de coulee centrifuge de tuyaux en fonte a emboitement

Publications (2)

Publication Number Publication Date
EP0127788A1 true EP0127788A1 (de) 1984-12-12
EP0127788B1 EP0127788B1 (de) 1986-11-20

Family

ID=9289267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105099A Expired EP0127788B1 (de) 1983-05-27 1984-05-05 Vorrichtung zum Handhaben und Anbringen eines Muffenkerns in eine Schleudergussmaschine zum Giessen von gusseisernen Muffenrohren

Country Status (16)

Country Link
US (1) US4541477A (de)
EP (1) EP0127788B1 (de)
JP (1) JPS59225869A (de)
KR (1) KR890004166B1 (de)
AT (1) ATE23683T1 (de)
AU (1) AU546635B2 (de)
BR (1) BR8402535A (de)
DD (1) DD218849A5 (de)
DE (1) DE3461355D1 (de)
ES (1) ES524663A0 (de)
FR (1) FR2546428B1 (de)
IN (1) IN160628B (de)
MX (1) MX158950A (de)
SU (1) SU1331419A3 (de)
UA (1) UA5979A1 (de)
ZA (1) ZA843572B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004050276A2 (en) * 2002-12-03 2004-06-17 Semco, Inc. Die cast formation of beryllium copper plunger tips
US8376024B1 (en) 2011-12-31 2013-02-19 Charles Earl Bates Foundry mold insulating coating
US8833433B2 (en) 2013-01-16 2014-09-16 Charles Earl Bates Foundry mold insulating coating

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR665767A (fr) * 1928-01-04 1929-09-23 Centrifugal Castings Ltd Perfectionnements aux machines centrifuges destinées à la coulée des tubes métalliques et des objets analogues
FR1219687A (fr) * 1959-04-03 1960-05-19 Rheinstahl Eisenwerke Ge Dispositif pour la coulée, par centrifugation, de tuyaux à manchon d'emboîtement
US3168765A (en) * 1962-03-21 1965-02-09 Canada Iron Foundries Ltd Automatic core setters for centrifugal pipe casting machines
FR1452172A (fr) * 1965-07-26 1966-02-25 Ct De Rech S De Pont A Mousson Moule de coulée par centrifugation de tuyaux à emboîtement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074130A (en) * 1959-06-22 1963-01-22 Rheinstahl Eisenwerke Ge Centrifugal casting apparatus
FR2314790A1 (fr) * 1975-06-16 1977-01-14 Pont A Mousson Machine de coulee centrifuge a dispositif d'amenee et de maintien axial d'un noyau
GB2024062B (en) * 1978-06-29 1982-09-08 Kubota Ltd Attachment and detachment of the front end plate of a centrifugal casting machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR665767A (fr) * 1928-01-04 1929-09-23 Centrifugal Castings Ltd Perfectionnements aux machines centrifuges destinées à la coulée des tubes métalliques et des objets analogues
FR1219687A (fr) * 1959-04-03 1960-05-19 Rheinstahl Eisenwerke Ge Dispositif pour la coulée, par centrifugation, de tuyaux à manchon d'emboîtement
US3168765A (en) * 1962-03-21 1965-02-09 Canada Iron Foundries Ltd Automatic core setters for centrifugal pipe casting machines
FR1452172A (fr) * 1965-07-26 1966-02-25 Ct De Rech S De Pont A Mousson Moule de coulée par centrifugation de tuyaux à emboîtement

Also Published As

Publication number Publication date
MX158950A (es) 1989-03-31
ES8403761A1 (es) 1984-05-01
AU546635B2 (en) 1985-09-12
IN160628B (de) 1987-07-18
JPS6110221B2 (de) 1986-03-28
DD218849A5 (de) 1985-02-20
KR840009232A (ko) 1984-12-26
SU1331419A3 (ru) 1987-08-15
JPS59225869A (ja) 1984-12-18
KR890004166B1 (ko) 1989-10-23
FR2546428B1 (fr) 1985-07-12
DE3461355D1 (en) 1987-01-08
ATE23683T1 (de) 1986-12-15
BR8402535A (pt) 1985-04-02
US4541477A (en) 1985-09-17
ES524663A0 (es) 1984-05-01
UA5979A1 (uk) 1994-12-29
ZA843572B (en) 1987-03-25
FR2546428A1 (fr) 1984-11-30
AU2871884A (en) 1984-11-29
EP0127788B1 (de) 1986-11-20

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