Abstract: A method of manufacturing molds and cores suitable for producing fiber composite bodies or cast parts of metal or plastic from a mold base material and a multicomponent binder by 3D printing includes pretreating the particulate mold base material with at least one silicon-organic compound having a polar hydrophilic end and a nonpolar hydrophobic end, forming a layer of the pretreated particulate mold base material, and applying the binder or at least one component of the binder in liquid form to the layer, wherein b. and c. are repeated.

Abstract: A casting tool for the production of castings, particularly cores for sand castings, pressure die-castings, and gravity die-castings is provided. The casting tool has a casting tool unit with a casting mold half having a mold recess the contour of which partly defines the shape of the casting, and an ejecting assembly disposed on that side of the casting mold half which faces away from the mold recess. The ejecting assembly has an ejecting rod which extends through an access bore into the mold recess in the casting mold half. An entrainer unit is attached to the ejecting assembly. The entrainer unit and a contact surface provided on the casting tool unit jointly define the maximum distance of the casting tool unit from the ejecting assembly.

Abstract: The invention relates to a casting tool comprising a bottom mold element (20) having a top-open mold recess (28) defining at least part of the shape of a casting to be produced (8), and comprising an ejector assembly (30) which is displaceable relatively to the first mold element in the direction of a vertical Z-axis and which has at least one ejector rod (34), which can be caused to protrude into the mold recess (28) in said bottom mold element (20) by displacement of said ejector assembly (30) relatively to said bottom mold element (20) wherein a base member (32) of the ejector assembly (30) to which the at least one ejector rod (34) is attached, is disposed in an ejector region (70) below the bottom mold element (20) and at least two force transferring members (40, 44) extending in the direction of the Z-axis are provided which are designed to transfer the forces (90a, 90b) downwardly acting on said mold element to a machine bed (6) of the casting machine disposed beneath said casting mold, at least one ou

Abstract: The invention relates to a casting tool for the production of castings (20), in particular a sand casting tool, comprising a mold element (12) having a mold recess (14b), which at least partly defines the contour of the casting (20) to be produced, an ejector holding device (40) which is movable in the direction of a Z-axis relatively to the mold element (12) and is disposed on the that side of the mold element (12) which faces away from the mold recess (14b), and at least one ejector rod (50), which is attached to the ejector holding device (40) and is capable of being inserted through an access bore (30) in the mold element (12), oriented in the direction of the Z-axis, so as to protrude into the mold recess (14b) for the purpose of pushing out the finished casting (20) from the mold recess (14b), wherein the attachment of the ejecting rod (50) to the ejector holding device (40) is effected in such a manner that the ejector rod (50) has restricted freedom of movement relatively to the ejector holding device

Abstract: 1. Method for installing a sand casting tool and appropriate casting tool. 2.1. The invention relates to a method for installing a sand casting tool comprising at least one mold element (10) having a mold recess (14a) which at least partially defines the contour of a sand casting to be produced, at least one leveling rod holding device (40) which is displaceable in the direction of a Z-axis relative to said mold element (10) and which is disposed on the side of the mold element (10) facing away from said mold recess (14a), at least one leveling rod (30) capable of being inserted through an access bore (20) in said mold element from the outside surface of said mold element (10) as far as said mold recess (14a) and which can be attached in a fixed position to said leveling rod holding device (40). 2.2. The invention includes the following steps: A. insertion of the leveling rod (30) in the direction (2) of the Z-axis into the access bore (20) of said mold element (10), and B.

Abstract: The invention relates to a casting tool for the production of castings, particularly cores for sand castings, pressure die-castings, and gravity diecastings, comprising a first casting tool unit (2) including a first casting mold half (22) having a first mold recess (24) the contour (22b) of which at least partly defines the shape of the casting, an ejecting assembly (6) disposed on that side of the first casting mold half (22) which faces away from the first mold recess (24) and capable of movement in the direction of a Z-axis relatively to the first casting tool unit (2) and having at least one ejecting rod (62) which can extend through an access bore (22a) into the first mold recess (24) in the first casting mold half (22), wherein an entrainer unit (76) is attached to the ejecting assembly (6), to which entrainer a contact surface (30a) provided on the first casting tool unit (2) is assigned for contacting the entrainer (76), wherein the entrainer (76) and the contact surface (30a) jointly define the maxi

Abstract: The invention relates to a casting tool for the production of castings, particularly for the production of cores (90) for sand castings, comprising a supporting device consisting of a first and a second supporting unit (10, 20, 50, 60) capable of being moved in a joining direction (2) toward each other, and comprising at least two mold elements (30, 40), of which a first mold element (30) is attached to the first supporting unit (10, 20) and a second mold element (40) is secured to the second supporting unit (50, 60), which mold elements (30, 40) each have a mold recess (33, 43), which mold recesses (33, 43) in the mold elements (30, 40) together define the shape of at least one casting core to be produced (90) when the first and second mold elements (30, 40) bear against each other.