Abstract: The present disclosure relates to a mold core for use on a molding apparatus for the production of hollow and/or in particular tubular concrete bodies, and a molding apparatus comprising such a mold core. The mold core comprises a longitudinally extending wall of the core, which has a wall of the core from one end to the other end of the wall of the core in the longitudinal direction, an expansion device for expanding and/or spreading and/or contracting and/or shrinking the mold core, and a sealing element sealing the longitudinal opening of the wall of the core. The sealing element is provided with respective longitudinal edges of the wall of the core by means of a detachable connection, the sealing member being slidably connected to the two longitudinal edges of the wall of the core in the longitudinal direction, respectively.

Abstract: Embodiments of a method and a mold for producing a concrete pipe comprising a basic body made of concrete and a plastic inner pipe for conducting a liquid. The method comprises introducing a mold core into the plastic inner pipe, introducing the plastic inner pipe into an outer mold and pouring concrete into an intermediate space between the outer mold and the plastic inner pipe to form the basic body. After the concrete has solidified, the plastic inner pipe remains as inner formwork in the basic body made of concrete and the mold core is removed.

Abstract: A method and system for producing tubular concrete products in a casting method using upright casting molds. The system includes a fabrication zone with a plurality of fully automated fabrication stations and a mold conveyor, the first zone having: a first demolding station for removing an outer mold from a casting mold positioned at the first demolding station, a second demolding station for removing a cured tubular concrete product form a mold core positioned at the second demolding station, a mold core cleaning station for cleaning a mold core positioned at the mold core cleaning station, an outer mold cleaning station for cleaning an outer mold positioned at the outer mold cleaning station, a mold assembly station for assembling a casting mold from an outer mold and a mold core, and at least one filling station for filling an assembled casting mold with concrete.

Abstract: A method and system for producing tubular concrete products in a casting method using upright casting molds. The system includes a fabrication zone with a plurality of fully automated fabrication stations and a mold conveyor, the first zone having: a first demolding station for removing an outer mold from a casting mold positioned at the first demolding station, a second demolding station for removing a cured tubular concrete product form a mold core positioned at the second demolding station, a mold core cleaning station for cleaning a mold core positioned at the mold core cleaning station, an outer mold cleaning station for cleaning an outer mold positioned at the outer mold cleaning station, a mold assembly station for assembling a casting mold from an outer mold and a mold core, and at least one filling station for filling an assembled casting mold with concrete.

Abstract: A method for producing a concrete shaft bottom which comprises a drain having a defined shape. Concrete is introduced into a bottom mold that comprises a mold jacket and a mold bottom. On the mold bottom, a molded body forming the negative shape of the drain is disposed to configure the drain. The invention allows for the inexpensive and mechanized production of a shaft bottom having an individual drain. For this purpose, the molded body is configured from at least one molded piece that is fixed on the bottom mold, especially on the mold bottom. The molded piece is adapted to the dimensions of the defined shape of the drain and is removed from the shaft bottom once or while the formwork is dismantled from the shaft bottom.

Abstract: Embodiments of a method and a mould for producing a concrete pipe comprising a basic body made of concrete and a plastic inner pipe for conducting a liquid. The method comprises introducing a mould core into the plastic inner pipe, introducing the plastic inner pipe into an outer mould and pouring concrete into an intermediate space between the outer mould and the plastic inner pipe to form the basic body. After the concrete has solidified, the plastic inner pipe remains as inner formwork in the basic body made of concrete and the mould core is removed.

Abstract: The invention relates to a method for producing a concrete shaft bottom which comprises a drain having a defined shape. According to said method, concrete is introduced into a bottom mold (1) that comprises a mold jacket (2) and a mold bottom (3). On said mold bottom (3), a molded body (8) forming the negative shape of the drain is disposed to configure the drain. The aim of the invention is to allow for the inexpensive and mechanized production of a shaft bottom having an individual drain. For this purpose, the molded body (8) is configured from at least one molded piece (9) that is fixed on the bottom mold (1), especially on the mold bottom (3). The molded piece (9) is adapted to the dimensions of the defined shape of the drain and is removed from the shaft bottom once or while the formwork is dismantled from the shaft bottom.

Abstract: In order to save material and/or for an easy assembly in a mould bottom of a bottom mould, a moulded piece forming a negative mould of at least a part of a chute of a shaft bottom which moulded piece is formed from a material forming a dead core and, optionally being assembled with at least one further moulded piece, forms the negative mould of a chute of a shaft bottom in the form of a moulded body, wherein the moulded piece(s) is (are) designed for being placed onto a mould bottom of a bottom mould for a shaft bottom and has (have) linear and/or an arcuate longitudinal extension, is characterized in that the moulded piece has at least one hollow space open toward the base which can be placed onto the mould bottom of the bottom mould and is designed as basically closed on the end faces lying opposite each other in the longitudinal extension of the moulded piece.

Abstract: A cast-in-place gasket is provided for an associated pipe joint. The gasket is mounted to a first associated pipe and adapted to provide a seal between the first associated pipe and a second associated pipe. The gasket includes a gasket body formed into an annulus from a resilient material. A first sealing head and a second sealing head protrude from the body in an axially rearward and radially inward direction. The first sealing head is axially spaced from the second sealing head. Each of the first sealing head and the second sealing head include a sealing surface. A first mounting foot and a second mounting foot protrude from the body in a radially outward direction. The first mounting foot is axially spaced from the second mounting foot. An open annular cavity is defined in the body between the first sealing head and the second sealing head. A first lip protrudes from the body proximal to a base of the first sealing head and extends in an axially forward and radially inward direction.

Abstract: An apparatus is described for machining on the face side a negative mold for a profile element (1) which is made of thermoplastic foamed material, forms the branch of a channel of a shaft floor and can be applied in an interlocking manner to a profile strand for the main channel, comprising a table (3) for receiving the profile element (1) to be machined and with a support (5) which is movable along a predetermined planar path for a curved heating wire (4) extending in one plane along the profile.

Abstract: A device for processing the contact surface of a mold profile has a table for receiving the mold profile and a heating wire running in accordance with the cross-sectional profile of the contact surface to be produced, which is movable in relation to the table along the contact surface. The mold profile is rotatable around the receptacle axis coaxially to the table receiving the contact surface in relation to the heating wire, which, originating from the receptacle axis, runs diagonally in relation to the receptacle axis at an angle corresponding to the conical contact surface to be processed, and the table has a passage for the heating wire to be inserted into the processing allowance of the mold profile in relation to the table in the direction of the receptacle axis.

Abstract: A cast-in-place gasket is provided for an associated pipe joint. The gasket is mounted to a first associated pipe and adapted to provide a seal between the first associated pipe and a second associated pipe. The gasket includes a gasket body formed into an annulus from a resilient material. A first sealing head and a second sealing head protrude from the body in an axially rearward and radially inward direction. The first sealing head is axially spaced from the second sealing head. Each of the first sealing head and the second sealing head include a sealing surface. A first mounting foot and a second mounting foot protrude from the body in a radially outward direction. The first mounting foot is axially spaced from the second mounting foot. An open annular cavity is defined in the body between the first sealing head and the second sealing head. A first lip protrudes from the body proximal to a base of the first sealing head and extends in an axially forward and radially inward direction.

Abstract: A device is described for processing the contact surface (1) of a mold profile (2), which forms a negative mold for a shaft floor drain and is possibly assembled from profile parts (26, 27), made of thermoplastic foam, which is provided with a processing allowance (25) in the area of the contact surface (1), having a table (4) for receiving the mold profile (2) to be processed and having a heating wire (18) running in accordance with the cross-sectional profile of the contact surface (1) to be produced, which is movable in relation to the table (4) along the contact surface (1) to be processed.

Abstract: A pipe joint includes a first pipe and a second pipe located adjacent the first pipe. One of the first pipe and the second pipe includes an annular groove, and a gasket is positioned within the annular groove. The gasket is adapted to provide a seal between the first pipe and the second pipe. The gasket includes an annular gasket body formed of a resilient material. The gasket body includes a base, at least one foot protruding from the base, and at least one head portion protruding from the base.

Abstract: In order to save material and/or for an easy assembly in a mould bottom of a bottom mould, a moulded piece forming a negative mould of at least a part of a chute of a shaft bottom which moulded piece is formed from a material forming a dead core and, optionally being assembled with at least one further moulded piece, forms the negative mould of a chute of a shaft bottom in the form of a moulded body, wherein the moulded piece(s) is (are) designed for being placed onto a mould bottom of a bottom mould for a shaft bottom and has (have) linear and/or an arcuate longitudinal extension, is characterized in that the moulded piece has at least one hollow space open toward the base which can be placed onto the mould bottom of the bottom mould and is designed as basically closed on the end faces lying opposite each other in the longitudinal extension of the moulded piece.

Abstract: The invention relates to a method for producing a concrete shaft bottom which comprises a drain having a defined shape. According to said method, concrete is introduced into a bottom mold (1) that comprises a mold jacket (2) and a mold bottom (3). On said mold bottom (3), a molded body (8) forming the negative shape of the drain is disposed to configure the drain. The aim of the invention is to allow for the inexpensive and mechanized production of a shaft bottom having an individual drain. For this purpose, the molded body (8) is configured from at least one molded piece (9) that is fixed on the bottom mold (1), especially on the mold bottom (3). The molded piece (9) is adapted to the dimensions of the defined shape of the drain and is removed from the shaft bottom once or while the formwork is dismantled from the shaft bottom.

Abstract: An apparatus is described for machining on the face side a negative mold for a profile element (1) which is made of thermoplastic foamed material, forms the branch of a channel of a shaft floor and can be applied in an interlocking manner to a profile strand for the main channel, comprising a table (3) for receiving the profile element (1) to be machined and with a support (5) which is movable along a predetermined planar path for a curved heating wire (4) extending in one plane along the profile.

Abstract: A method for the automatic production of hollow bodies from mixed material, particularly concrete. A mold assembled from a mold core comprising a shaking device, an exterior mold and a bottom sprue is positioned in a molding area, non-solidified bulk material, particularly unset concrete, is uniformly filled into the mold space between the mold core and the exterior mold, the mixed material is compressed by shaking, an upper centering end is formed by pressing an upper sprue into the unset concrete column and thereafter the so formed, still soft molded body is removed from the mold by extraction and is transported to a drying area. At least some of the mold components are automatically assembled in an assembly area previous to a mold exchange and moved into the molding area as a pre-mounted assembly. Previous to a renewed mold exchange they are reassembled in the molding area to form an independent assembly to be transported off.

Abstract: An apparatus for pulling a molding ring off a neck of a concrete tubular workpiece formed by the molding ring comprises two clamping jaws positioned diametrically opposite each other with respect to a vertical axis of the tubular workpiece, the clamping jaws overlapping the molding ring from above and engaging the workpiece below the molding ring. A supporting structure displaceably supports the clamping jaws, and a lifting device is arranged on the supporting structure for two pull-off catches arranged diametrically opposite each other with respect to the molding ring, the pull-off catches subtending an undercut of the molding ring. According to the invention, carriages are provided for the clamping jaws and pull-off catches, the carriages being adjustable in opposite directions along coaxial guides.

Abstract: A method for the automatic production of hollow bodies from mixed material, particularly concrete. A mold assembled from a mold core comprising a shaking device, an exterior mold and a bottom sprue is positioned in a molding area, non-solidified bulk material, particularly unset concrete, is uniformly filled into the mold space between the mold core and the exterior mold, the mixed material is compressed by shaking, an upper centering end is formed by pressing an upper sprue into the unset concrete column and thereafter the so formed, still soft molded body is removed from the mold by extraction and is transported to a drying area. At least some of the mold components are automatically assembled in an assembly area previous to a mold exchange and moved into the molding area as a pre-mounted assembly. Previous to a renewed mold exchange they are reassembled in the molding area to form an independent assembly to be transported off.