EP0260189A2 - Dichtungsvorrichtung für eine aus einer zu öffnenden Form bestehenden Schalung - Google Patents

Dichtungsvorrichtung für eine aus einer zu öffnenden Form bestehenden Schalung Download PDF

Info

Publication number
EP0260189A2
EP0260189A2 EP87401989A EP87401989A EP0260189A2 EP 0260189 A2 EP0260189 A2 EP 0260189A2 EP 87401989 A EP87401989 A EP 87401989A EP 87401989 A EP87401989 A EP 87401989A EP 0260189 A2 EP0260189 A2 EP 0260189A2
Authority
EP
European Patent Office
Prior art keywords
seal
radius
joint
section
tubular cavity
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.)
Withdrawn
Application number
EP87401989A
Other languages
English (en)
French (fr)
Other versions
EP0260189A3 (de
Inventor
Jean-Pierre Costamagna
Jean-Louis Feuillade
Paul Savard-Chambard
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.)
Bm Costamagna Sa
Original Assignee
Bm Costamagna 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 Bm Costamagna Sa filed Critical Bm Costamagna Sa
Publication of EP0260189A2 publication Critical patent/EP0260189A2/de
Publication of EP0260189A3 publication Critical patent/EP0260189A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0002—Auxiliary parts or elements of the mould
    • B28B7/0011—Mould seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/0056—Means for inserting the elements into the mould or supporting them in the mould

Definitions

  • the present invention relates to sealing devices in opening molds, for concrete parts.
  • the forms are made up of molds, arranged in modules or battery of parallel molds of unique lengths per module; the formwork, which can reach 80 to 10 ⁇ 0 ⁇ meters long, has aligned a series of modules held on a frame.
  • the sides of two neighboring molds are mounted integrally between them on a longitudinal plate which slides on the chassis under the action of a device which ensures the opening or closing of all molds.
  • This technology of opening molds provides a good solution to the problems of long, smooth products, by allowing a release before the tension is released. It can also be used for products with sewing steels. Indeed a flexible seal is provided in the bottom of the mold, sandwiched between the plate (sliding) and the bottom parts; this seal is formed of two parts, each linked to a mold flank; and the two parts come together when the mold is tight, surrounding the seam steels and ensuring the seal.
  • the seal only provides a poor seal because of its rigidity (the seal is flat and it does not deform very much) and its wear.
  • the object of the present invention is to overcome this drawback.
  • the subject of the invention is a seal for closing a concrete form mold, characterized in that it consists of a flexible longitudinal strip (1), substantially rectilinear, said strip (1) having a cross section of general triangular shape and internally comprising a tubular cavity (10 ⁇ ) to increase the flexibility of deformation during the pressure exerted on the seal (5) by the closure, said tubular cavity (10 ⁇ ) being located near the end (9) intended to come into contact with the end of the corresponding seal of the opposite mold (18 ⁇ ), the face (6) opposite to said end (9) being intended to be engaged in a horizontal groove (13), in dovetail of seal support (4).
  • the end (9) at the apex is of circular transverse shape, in a semicircle, of radius (R) and the tubular cavity (10 ⁇ ) is concentric with it, of circular section of radius (r).
  • the radius (r) of the cavity (10 ⁇ ) is between half and a quarter of the radius (R) of the end (9).
  • Figure 1 shows two sides of molds 18, 18 ⁇ neighbors according to patent 78.26898. Each has a sliding plate 2 on a frame not shown, so that the two sides approach or move away from each other depending on whether the mold is closed or opened. Between the plate 2, and the bottom part 3, there is a seal 5 mounted in a seal support 4.
  • All the mold sides 18 of the same formwork module comprise the same parts, in the same order (bottom part 3, joint support 4 and joint 5, and plate 2) and thus the joints of two neighboring sides are made faces, and come into contact with each other when the mold is closed.
  • Figure 2 shows in detail the cross section of the seal, uncompressed.
  • the seal 5 is a flexible longitudinal rod 1, made of elastic material, substantially rectilinear.
  • This rod 1 has a generally triangular cross section, and has at least two acute angles 20 ⁇ , 21.
  • the face 6 between these two acute angles 20 ⁇ , 21 engages at the bottom of a horizontal groove 13 in the form of dovetail, made in the joint support 4. Thus, the joint cannot exit from the groove 1.
  • the end 9, opposite this side 6 of the triangle, is intended to come to bear against the seal of the neighboring mold. It is rounded in a semi-circle forming a semi-cylinder longitudinally.
  • the seal 5 has internally a tubular cavity 10 ⁇ , to increase the flexibility of deformation due to the pressure exerted on the seal during the closing of the molds.
  • the tubular cavity 10 ⁇ is situated on the side of the end 9 which comes into contact with the opposite seal, in order to reduce the thickness between the cavity and the external surface and consequently reduce the resistance to deformation, and maintain a full joint on the side engaged in the groove 13 in order to avoid deformations in this part.
  • the cross section of the rod 1 has the shape of an isosceles triangle, and the cavity is located in the plane of symmetry 14.
  • the cavity is of circular section, forming, when the molds are open ( Figure 2) a cylindrical tube.
  • the cavity, of radius r and the circular end 9, of radius R are concentric so that the thickness (R-r) of the joint between the end and the cavity is constant.
  • the radius R of the end is 6 mm
  • the concentric radius of the cavity 10 ⁇ is between 0.25 and 0.5 times the radius R and preferably is equal to R / 3, ie 2 mm. This preferential arrangement provides the joint with good deformability and good operational resistance.
  • FIG. 5 shows a very small residual opening 11 of leakage considerably reduced compared to existing systems.
  • the seal has a trapezoidal shape, the end 9 forming the fourth side parallel to the base 6.
  • the corresponding tubular cavity 10 ⁇ has an approximately trapezoidal shape, so that the thickness of the seal around of the end 9 is approximately constant, when the molds are open.
  • the seal has on its lateral sides 7 and 8 ribs 12 or notches, blocking the seal ensuring the maintenance of said seal in its support during the opening of the molds.
  • These ribs are preferably oriented towards the tapered end 9.
  • the seal support 4 is a rectilinear piece held between the bottom piece 3 and the plate 2. Of transverse section of generally parallelepiped shape, this support comprises, on the side facing the neighboring flank, a groove 13 in the form of a tail d 'dovetails. The width of the opening of this groove is less than the width of the base 6 of the seal so that when the seal is put in place, the latter must be reduced so that it can penetrate the groove.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP87401989A 1986-09-08 1987-09-04 Dichtungsvorrichtung für eine aus einer zu öffnenden Form bestehenden Schalung Withdrawn EP0260189A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8612545 1986-09-08
FR8612545A FR2603516B1 (fr) 1986-09-08 1986-09-08 Dispositif d'etancheite de coffrage en moule ouvrant

Publications (2)

Publication Number Publication Date
EP0260189A2 true EP0260189A2 (de) 1988-03-16
EP0260189A3 EP0260189A3 (de) 1989-09-27

Family

ID=9338763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401989A Withdrawn EP0260189A3 (de) 1986-09-08 1987-09-04 Dichtungsvorrichtung für eine aus einer zu öffnenden Form bestehenden Schalung

Country Status (2)

Country Link
EP (1) EP0260189A3 (de)
FR (1) FR2603516B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1767321A1 (de) * 2005-09-23 2007-03-28 Lesage, Rector Zu öffnende Form
CN106738225A (zh) * 2016-12-21 2017-05-31 周兆弟 制作横截面为矩形的预制桩的模具

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL46661C (de) * 1900-01-01
DE1058907B (de) * 1956-02-18 1959-06-04 Alweg Forschung Ges Mit Beschr Stirnschalwand
FR1228200A (fr) * 1959-03-09 1960-08-26 Procédés et machines pour la fabrication de poutres et de poteaux en béton précontraint
FR1335081A (fr) * 1962-07-03 1963-08-16 Merlin Gerin Joint pour assurer l'étanchéité d'un interstice
GB1158472A (en) * 1964-02-19 1969-07-16 Dixon & Partners Ltd Bernard Improvements in Sealing Strips
FR2228145A1 (en) * 1973-05-04 1974-11-29 Costamagna & Cie B M Pre-stressed concrete girder with trapezoidal flange - larger end of flange widens, smaller end has mounting shoulders
FR2375016A1 (fr) * 1976-12-22 1978-07-21 Costamagna & Cie B M Profile de fond de moule de prefabrication de produits en beton precontraint ou beton arme
DE3302821A1 (de) * 1983-01-28 1984-08-02 Klaus Dipl.-Ing. 8000 München Dahm Betonschalung
SE452575B (sv) * 1985-12-18 1987-12-07 Volvo Ab Forfarande och anordning for framstellning av en list varvid en massa strengsprutas pa platsen for produktens anvendning

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1767321A1 (de) * 2005-09-23 2007-03-28 Lesage, Rector Zu öffnende Form
FR2891183A1 (fr) * 2005-09-23 2007-03-30 Rector Lesage Sa Module de fabrication d'elements profiles pourvus d'armatures depassantes et module de moulage
CN106738225A (zh) * 2016-12-21 2017-05-31 周兆弟 制作横截面为矩形的预制桩的模具
CN106738225B (zh) * 2016-12-21 2022-11-08 周兆弟 制作横截面为矩形的预制桩的模具

Also Published As

Publication number Publication date
EP0260189A3 (de) 1989-09-27
FR2603516A1 (fr) 1988-03-11
FR2603516B1 (fr) 1990-09-14

Similar Documents

Publication Publication Date Title
EP0808008A1 (de) Abgedichtetes Kabelverbindungsgehäuse
FR2598905A1 (fr) Dispositif d'interruption de la circulation d'un fluide dans un conduit a paroi souple, notamment un viscere creux et ensemble de pince comportant ce dispositif
EP0348267A1 (de) Kombinationsdichtung für hydraulische Einrichtungen
FR2950906A1 (fr) Dispositif de liaison entre deux elements plats prefabriques a assembler en succession lineaire et sensiblement coplanaire
EP0294301B1 (de) Vorrichtung zur zeitweiligen Verbindung der Enden von zwei Elementen, von denen mindestens eines biegsam ist
FR2582957A1 (fr) Plaque a membrane pour filtres-presses a plaques
EP0833987B1 (de) Durchgehend verstärkte trennwand, zugehorige herstellungsverfahren und schalung
EP0260189A2 (de) Dichtungsvorrichtung für eine aus einer zu öffnenden Form bestehenden Schalung
FR2473091A1 (fr) Dispositif de coffrage autodecoffrant utile pour la realisation d'une paroi moulee dans le sol
FR2813624A1 (fr) Profile de raccord et d'etancheite, dispositif de raccord, panneau a structure sandwich, et ensemble de facade, de cloison ou de couverture
OA10392A (en) Conduite de circulation de fluide
EP1753096B1 (de) Führungsschienenanordnung für die elektrische Stromversorgungsanordnung mit bewegbarer Stromsteckdose
EP0307291A1 (de) Brückenkopf zur Querpassage eines Grabens
FR2820024A1 (fr) Anneau ecarteur dentaire
FR2540911A1 (fr) Procede pour la realisation de l'etancheite entre les panneaux prefabriques d'une paroi dans le sol, et joint d'etancheite pour la mise en oeuvre de ce procede
EP3867140A1 (de) Schwimmmodul einer schwimmenden struktur und verfahren zur verbindung solcher schwimmenden module
FR2676763A1 (fr) Procede pour decoller un joint d'extremite de panneau lors de la realisation de parois moulees dans le sol et joint pour la mise en óoeuvre de ce procede.
CH697325B1 (fr) Mur de façade.
FR2812023A1 (fr) Panneau amovible pour l'obturation temporaire des ouvertures de batiment et systeme d'obturation mettant en oeuvre un tel panneau
FR2759106A1 (fr) Procede de realisation simultanee de deux parois en beton separees par un espace vide
FR2997116A1 (fr) Mannequin pour la fabrication d'ouverture dans du beton coule
BE549606A (de)
FR3118898A1 (fr) Moule à injection à serrage concentré et machine de moulage par injection associée
FR2776320A1 (fr) Caisson d'attente pour armatures de liaison
FR2566452A1 (fr) Profile d'etancheite en matiere plastique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE LU NL

17P Request for examination filed

Effective date: 19880308

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE LU NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19900328

RIN1 Information on inventor provided before grant (corrected)

Inventor name: COSTAMAGNA, JEAN-PIERRE

Inventor name: SAVARD-CHAMBARD, PAUL

Inventor name: FEUILLADE, JEAN-LOUIS