WO2006001742A1 - Device for mounting a sealing ring, adapted to be partially embedded in a concrete pipe, on a bottom ring of a casting mould - Google Patents

Device for mounting a sealing ring, adapted to be partially embedded in a concrete pipe, on a bottom ring of a casting mould Download PDF

Info

Publication number
WO2006001742A1
WO2006001742A1 PCT/SE2005/000736 SE2005000736W WO2006001742A1 WO 2006001742 A1 WO2006001742 A1 WO 2006001742A1 SE 2005000736 W SE2005000736 W SE 2005000736W WO 2006001742 A1 WO2006001742 A1 WO 2006001742A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
sealing ring
suction
sealing
bottom ring
Prior art date
Application number
PCT/SE2005/000736
Other languages
French (fr)
Inventor
Patrick De Cock
Original Assignee
Trelleborg Forsheda Building Ab
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 Trelleborg Forsheda Building Ab filed Critical Trelleborg Forsheda Building Ab
Publication of WO2006001742A1 publication Critical patent/WO2006001742A1/en

Links

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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
    • B28B21/563—Gaskets
    • 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
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • 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
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/76—Moulds
    • B28B21/765—Top or bottom rings
    • 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
    • B28B23/0043—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with gaskets or sealing elements, e.g. for tunnelings or man holes
    • 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 a device for mount ⁇ ing an elastic sealing ring on a bottom ring, which forms part of a casting mould for casting a concrete pipe pro- vided with a socket and which is adapted to form the socket of the concrete pipe, causing the sealing ring to be partially embedded therein.
  • Sealing rings for sealing an annular gap between a concrete pipe socket and a concrete pipe spigot end which are intended to be embedded in the concrete pipe socket during casting are elastic and mounted on a bottom ring, which forms part of a casting mould for casting a con- crete pipe provided with a socket.
  • the sealing ring is mounted manually on the bottom ring, which is a laborious task the performance of which requires considerable experience and precision. If the sealing ring is incorrectly positioned on the bottom ring, it may end up in an incorrect embedding position in the socket and concrete may penetrate between the sealing ring and the bottom ring during casting, which of course reduces the sealing effect of the sealing ring. It is therefore essential that the sealing ring be correctly positioned on the bottom ring.
  • the object of the present invention therefore is to provide a device by means of which an elastic sealing ring can be mounted on a bottom ring in an automatic and accurate manner.
  • a device which is of the type stated by way of introduction and characterised by a cylinder, which is arranged to support a plurality of slipped on sealing rings, a supporting element, which is arranged to support the bottom ring, and a ring application unit, which has a plurality of suction heads uniformly distributed along the circumfe ⁇ rence of the cylinder, which are connected to a suction source and adapted to be brought into suction engagement with one of the sealing rings on the cylinder, to be moved radially outwards for the purpose of expanding the sealing ring, to be moved, with the sealing ring attached thereto by suction, to the bottom ring for the purpose of positioning the sealing ring around the bottom ring, and to release the sealing ring by cancelling the suction effect exerted thereon.
  • the cylinder is a vertical column, which is arranged to support the sealing rings stacked on one another, the suction heads conveniently being adapted to be brought into suction engagement with the lowermost sealing ring of the stack and to expand the same.
  • the supporting element is advantageously arranged to support the bottom ring horizontally and in axial alignment with the column underneath the same.
  • the supporting element has a positioning means for positioning the bottom ring in a predetermined position on the supporting element.
  • Fig. 1 is a schematic side view and shows a device according to the invention with a ring application unit located in a starting position.
  • Fig. 2 is a schematic sectional view taken along the line A-A in Fig. 1.
  • Fig. 3 is an enlarged schematic sectional view and illustrates the manner in which a suction head is con ⁇ nected to a suction source.
  • Figs 4-7 correspond to Fig. 1 but show the ring application unit in different operating positions.
  • the inventive device illustrated in the drawings has a cylinder 1, which forms a vertical column and which supports a plurality of elastic sealing rings 2 stacked on one another and slipped on the column. At its lower end, the column 1 comprises a retaining ring 3 on which the stack of sealing rings 2 rests.
  • a horizontal table 4 is arranged directly below the column 1. The table 4 supports a bottom ring 5, which forms part of a casting mould for casting a concrete pipe provided with a socket and which is adapted to form the concrete pipe socket, causing a sealing ring 2 to be par ⁇ tially embedded therein.
  • the table 4 has a positioning means 6 in the way of a ring attached thereto with a slightly conical outer surface, which means is adapted to guide the bottom ring 5, as the bottom ring 5 is placed on the table 4, to the right position in axial alignment with the column 1 and to retain the bottom ring 5 in this position.
  • the device has a ring application unit 7, which is reciprocally displaceable in the axial direction of the column 1, i.e. vertically, and which has a plura ⁇ lity (four in the embodiment shown) of radially displace- able suction heads 8 uniformly distributed along the cir ⁇ cumference of the column 1 and arranged at the same hori ⁇ zontal level, which in an initial position (Fig.
  • each suction head 8 is circular-arc-shaped, and the radius of the circular-arc-shaped inner surface 9 thereof facing the column 1 is equal to the outer radius of the sealing rings 2. Furthermore, each suction head 8 has an inner duct system 10 with ducts that debouch at the circular-arc-shaped inner surface 9.
  • the inner duct sys ⁇ tem 10 of each suction head 8 is connected via a fitting 10a to a vacuum source or suction source 11, for example a pump provided separately for each suction head 8 or, preferably, a pump common to all the suction heads 8.
  • a plurality of sealing rings 2 are slipped on the column 1, either manually or, preferably, by means of a transport device (not shown) positioned above the column 1, and a bottom ring 5 is arranged on the table 4 on top of the ring 6, i.e. in a position axially aligned with the column 1.
  • the suction heads 8 are in their initial position as shown in Fig. 1, i.e. level with and at a radial dis ⁇ tance from the lowermost sealing ring 2 of the stack.
  • the suction heads 8 are then displaced synchronously radially inwards to such an extent that their inner surface 9 abuts against the outer surface of the lowermost sealing ring 2 (Fig.
  • the shape of the inner surface 9 being adapted to that of said outer surface.
  • a suction effect is exerted by the suction source 11 on the sealing ring 2 via the duct system 10 in each suction head 8.
  • the suc ⁇ tion heads 8 are then displaced synchronously radially outwards to stretch or expand the sealing ring 2 (Fig. 5) to such a degree that its inner diameter is larger than the outer diameter of the bottom ring 5 in the portion 5a where the sealing ring 2 is to be applied.
  • the ring application unit 7 is displaced, with the sealing ring 2 attached by suction to the suction heads 8, axially down ⁇ wards to the level of said portion 5a of the bottom ring 5 (Fig.
  • the ring application unit 7 is then returned to the ini- tial position (Fig. 1) .
  • the bottom ring 5 with the seal ⁇ ing ring 2 mounted thereon is removed from the table 4 and replaced by a new bottom ring to be provided with a sealing ring 2, following which the process described above is repeated.
  • the ring application unit 7 and its suction heads 8 are displaced in per se known manner, for example pneuma ⁇ tically or hydraulically, the displacements as well as the connection and disconnection of the suction source 11 being controlled by means of control equipment known in the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

A device for mounting an elastic sealing ring (2) on a bottom ring (5), which forms part of a casting mould for casting a concrete pipe provided with a socket and which is adapted to form the socket of the concrete pipe, causing the sealing ring to be partially embedded therein, has a vertical column (1), which is arranged to support a stack of sealing rings (2) stacked on one another. A supporting element (4) is arranged to support the bottom ring (5) horizontally and in axial alignment with the column (1). A ring application unit (7) has a plurality of suction heads (8) uniformly distributed along the circumference of the cylinder (1), which are connected to a suction source and arranged to be brought into suction engagement with the lowermost sealing ring (2) of the stack, to be moved radially outwards for the purpose of expanding the sealing ring (2), to be moved, with the sealing ring (2) attached thereto by suction, to the bottom ring (5) for the purpose of positioning the sealing ring (2) around the bottom ring (5) and to release the sealing ring (2) by cancelling the suction effect exerted thereon.

Description

DEVICE FOR MOUNTING A SEALING RING, ADAPTED TO BE PARTIALLY EMBEDDED IN A CONCRETE PIPE, ON A BOTTOM RING OF A CASTING MOULD
Field of the Invention The present invention relates to a device for mount¬ ing an elastic sealing ring on a bottom ring, which forms part of a casting mould for casting a concrete pipe pro- vided with a socket and which is adapted to form the socket of the concrete pipe, causing the sealing ring to be partially embedded therein.
Background Art Sealing rings for sealing an annular gap between a concrete pipe socket and a concrete pipe spigot end which are intended to be embedded in the concrete pipe socket during casting are elastic and mounted on a bottom ring, which forms part of a casting mould for casting a con- crete pipe provided with a socket. In known methods, the sealing ring is mounted manually on the bottom ring, which is a laborious task the performance of which requires considerable experience and precision. If the sealing ring is incorrectly positioned on the bottom ring, it may end up in an incorrect embedding position in the socket and concrete may penetrate between the sealing ring and the bottom ring during casting, which of course reduces the sealing effect of the sealing ring. It is therefore essential that the sealing ring be correctly positioned on the bottom ring.
Summary of the Invention The object of the present invention therefore is to provide a device by means of which an elastic sealing ring can be mounted on a bottom ring in an automatic and accurate manner. This object is achieved by a device which is of the type stated by way of introduction and characterised by a cylinder, which is arranged to support a plurality of slipped on sealing rings, a supporting element, which is arranged to support the bottom ring, and a ring application unit, which has a plurality of suction heads uniformly distributed along the circumfe¬ rence of the cylinder, which are connected to a suction source and adapted to be brought into suction engagement with one of the sealing rings on the cylinder, to be moved radially outwards for the purpose of expanding the sealing ring, to be moved, with the sealing ring attached thereto by suction, to the bottom ring for the purpose of positioning the sealing ring around the bottom ring, and to release the sealing ring by cancelling the suction effect exerted thereon. Preferably, the cylinder is a vertical column, which is arranged to support the sealing rings stacked on one another, the suction heads conveniently being adapted to be brought into suction engagement with the lowermost sealing ring of the stack and to expand the same. The supporting element is advantageously arranged to support the bottom ring horizontally and in axial alignment with the column underneath the same. Preferably, the supporting element has a positioning means for positioning the bottom ring in a predetermined position on the supporting element.
Brief Description of the Drawings The invention will now be described in more detail with reference to the accompanying drawings. Fig. 1 is a schematic side view and shows a device according to the invention with a ring application unit located in a starting position. Fig. 2 is a schematic sectional view taken along the line A-A in Fig. 1. Fig. 3 is an enlarged schematic sectional view and illustrates the manner in which a suction head is con¬ nected to a suction source. Figs 4-7 correspond to Fig. 1 but show the ring application unit in different operating positions.
Description of a Preferred Embodiment The inventive device illustrated in the drawings has a cylinder 1, which forms a vertical column and which supports a plurality of elastic sealing rings 2 stacked on one another and slipped on the column. At its lower end, the column 1 comprises a retaining ring 3 on which the stack of sealing rings 2 rests. A horizontal table 4 is arranged directly below the column 1. The table 4 supports a bottom ring 5, which forms part of a casting mould for casting a concrete pipe provided with a socket and which is adapted to form the concrete pipe socket, causing a sealing ring 2 to be par¬ tially embedded therein. The table 4 has a positioning means 6 in the way of a ring attached thereto with a slightly conical outer surface, which means is adapted to guide the bottom ring 5, as the bottom ring 5 is placed on the table 4, to the right position in axial alignment with the column 1 and to retain the bottom ring 5 in this position. Moreover, the device has a ring application unit 7, which is reciprocally displaceable in the axial direction of the column 1, i.e. vertically, and which has a plura¬ lity (four in the embodiment shown) of radially displace- able suction heads 8 uniformly distributed along the cir¬ cumference of the column 1 and arranged at the same hori¬ zontal level, which in an initial position (Fig. 1) is the level at which the lowermost sealing ring 2 of the stack is located. Each suction head 8 is circular-arc-shaped, and the radius of the circular-arc-shaped inner surface 9 thereof facing the column 1 is equal to the outer radius of the sealing rings 2. Furthermore, each suction head 8 has an inner duct system 10 with ducts that debouch at the circular-arc-shaped inner surface 9. The inner duct sys¬ tem 10 of each suction head 8 is connected via a fitting 10a to a vacuum source or suction source 11, for example a pump provided separately for each suction head 8 or, preferably, a pump common to all the suction heads 8. To use the device a plurality of sealing rings 2 are slipped on the column 1, either manually or, preferably, by means of a transport device (not shown) positioned above the column 1, and a bottom ring 5 is arranged on the table 4 on top of the ring 6, i.e. in a position axially aligned with the column 1. During these opera¬ tions, the suction heads 8 are in their initial position as shown in Fig. 1, i.e. level with and at a radial dis¬ tance from the lowermost sealing ring 2 of the stack. The suction heads 8 are then displaced synchronously radially inwards to such an extent that their inner surface 9 abuts against the outer surface of the lowermost sealing ring 2 (Fig. 4), the shape of the inner surface 9 being adapted to that of said outer surface. A suction effect is exerted by the suction source 11 on the sealing ring 2 via the duct system 10 in each suction head 8. The suc¬ tion heads 8 are then displaced synchronously radially outwards to stretch or expand the sealing ring 2 (Fig. 5) to such a degree that its inner diameter is larger than the outer diameter of the bottom ring 5 in the portion 5a where the sealing ring 2 is to be applied. The ring application unit 7 is displaced, with the sealing ring 2 attached by suction to the suction heads 8, axially down¬ wards to the level of said portion 5a of the bottom ring 5 (Fig. 6), whereupon the suction effect exerted on the sealing ring 2 is cancelled, causing the latter to be released from the suction heads 8 and to resume, due to its elasticity, its original diameter and, thus, to be mounted on the portion 5a of the bottom ring 5 (Fig. 7) . The ring application unit 7 is then returned to the ini- tial position (Fig. 1) . The bottom ring 5 with the seal¬ ing ring 2 mounted thereon, is removed from the table 4 and replaced by a new bottom ring to be provided with a sealing ring 2, following which the process described above is repeated. The ring application unit 7 and its suction heads 8 are displaced in per se known manner, for example pneuma¬ tically or hydraulically, the displacements as well as the connection and disconnection of the suction source 11 being controlled by means of control equipment known in the art.

Claims

1. A device for mounting an elastic sealing ring (2) on a bottom ring (5), which forms part of a casting mould for casting a concrete pipe provided with a socket and which is adapted to form the socket of the concrete pipe, causing the sealing ring to be partially embedded there¬ in, c h a r a c t e r i s e d by a cylinder (1), which is arranged to support a plu¬ rality of slipped on sealing rings (2), a supporting element (4), which is arranged to sup¬ port the bottom ring (5), and a ring application unit (7) , which has a plurality of suction heads (8) uniformly distributed along the circumference of the cylinder (1), which are connected to a suction source (11) and adapted to be brought into suction engagement with one of the sealing rings (2) on the cylinder (1), to be moved radially outwards for the purpose of expanding the sealing ring (2), to be moved, with the sealing ring (2) attached thereto by suction, to the bottom ring (5) for the purpose of positioning the sealing ring (2) around the bottom ring (5) and to release the sealing ring (2) by cancelling the suction effect exerted thereon.
2. A device as claimed in claim 1, in which the cylinder (1) forms a vertical column, which is arranged to support the sealing rings (2) stacked on one another.
3. A device as claimed in claim 2, in which the suc¬ tion heads (8) are adapted to be brought into suction engagement with the lowermost sealing ring (2) of the stack and to expand the same.
4. A device as claimed in claim 2 or 3, in which the supporting element (4) is arranged to support the bottom ring (5) horizontally and in axial alignment with the column (1) underneath the same.
5. A device as claimed in any one of the preceding claims, in which the supporting element (4) has a posi¬ tioning means (6) for positioning the bottom ring (5) in a predetermined position on the supporting element.
PCT/SE2005/000736 2004-06-23 2005-05-20 Device for mounting a sealing ring, adapted to be partially embedded in a concrete pipe, on a bottom ring of a casting mould WO2006001742A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0401614-3 2004-06-23
SE0401614A SE0401614L (en) 2004-06-23 2004-06-23 Apparatus for clamping a sealing ring for partial casting in a concrete pipe on a bottom ring in a mold

Publications (1)

Publication Number Publication Date
WO2006001742A1 true WO2006001742A1 (en) 2006-01-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2005/000736 WO2006001742A1 (en) 2004-06-23 2005-05-20 Device for mounting a sealing ring, adapted to be partially embedded in a concrete pipe, on a bottom ring of a casting mould

Country Status (2)

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SE (1) SE0401614L (en)
WO (1) WO2006001742A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB725093A (en) * 1953-08-14 1955-03-02 Meyer Geo J Mfg Co Device for applying bands to containers
GB861635A (en) * 1958-09-22 1961-02-22 Edward John Schaefer Apparatus and method of casting
EP0358256A1 (en) * 1988-09-05 1990-03-14 Forsheda AB A sealing and protective device for pipes
EP0507005A2 (en) * 1991-03-01 1992-10-07 Forsheda AB A pipe joint
FR2695589A1 (en) * 1992-09-15 1994-03-18 Forsheda Sealing joint moulding process for concrete pipes - includes step of placing seal and annular element on forming ring and bonding by depression
DE10148574C1 (en) * 2001-10-01 2003-02-13 Wagener & Polascheck Vertriebs Concrete shaft ring manufacturing method has equalization or sealing element lowered into concrete at end of shaft ring during limited pivot movement in alternating directions

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB725093A (en) * 1953-08-14 1955-03-02 Meyer Geo J Mfg Co Device for applying bands to containers
GB861635A (en) * 1958-09-22 1961-02-22 Edward John Schaefer Apparatus and method of casting
EP0358256A1 (en) * 1988-09-05 1990-03-14 Forsheda AB A sealing and protective device for pipes
EP0507005A2 (en) * 1991-03-01 1992-10-07 Forsheda AB A pipe joint
FR2695589A1 (en) * 1992-09-15 1994-03-18 Forsheda Sealing joint moulding process for concrete pipes - includes step of placing seal and annular element on forming ring and bonding by depression
DE10148574C1 (en) * 2001-10-01 2003-02-13 Wagener & Polascheck Vertriebs Concrete shaft ring manufacturing method has equalization or sealing element lowered into concrete at end of shaft ring during limited pivot movement in alternating directions

Also Published As

Publication number Publication date
SE525767C2 (en) 2005-04-19
SE0401614L (en) 2005-04-19
SE0401614D0 (en) 2004-06-23

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