A flaskless molding machine includes: an upper sand tank storing the mold sand to be supplied to the upper molding space; a first lower sand tank storing the mold sand to be supplied to the lower molding space, and having a first communication port for discharging the stored mold sand; a second lower sand tank having a second communication port capable of communicating with the first communication port of the first lower sand tank, and storing the mold sand supplied from the first lower sand tank and to be supplied to the lower molding space; at least one first guide member extending in a vertical direction, and guiding the upper flask, the lower flask and the second lower sand tank in the vertical direction; and a second guide member extending in the vertical direction, and guiding the first lower sand tank in the vertical direction.

The present invention discloses a low-pressure aluminum casting mold and a low-pressure aluminum casting process for motor rotor. The low-pressure aluminum casting mold includes an upper blade profile assembly, a lower blade profile assembly, a rotor core (1), a dummy shaft (2) and a diverter (7), the upper blade profile assembly includes an upper backing plate (3) and an upper mold (4), the lower blade profile assembly includes a lower backing plate (5) and a lower mold (6). The low-pressure aluminum casting mold further includes a first pressing device (8) and four sets of second pressing devices (9). The low-pressure aluminum casting process includes the steps of cold lamination, heating of the rotor core, mold preparation, hot lamination and low-pressure casting.

The present invention discloses a low-pressure aluminum casting mold and a low-pressure aluminum casting process for motor rotor. The low-pressure aluminum casting mold includes an upper blade profile assembly, a lower blade profile assembly, a rotor core (1), a dummy shaft (2) and a diverter (7), the upper blade profile assembly includes an upper backing plate (3) and an upper mold (4), the lower blade profile assembly includes a lower backing plate (5) and a lower mold (6). The low-pressure aluminum casting mold further includes a first pressing device (8) and four sets of second pressing devices (9). The low-pressure aluminum casting process includes the steps of cold lamination, heating of the rotor core, mold preparation, hot lamination and low-pressure casting.

Disclosed is a cylinder liner having a high bonding strength to a cylinder block. Further disclosed is a method for producing the same. The cylinder liner uses a silicon-aluminum alloy as a material; a plurality of protrusions are formed on the external surface thereof; and the protrusions each contain a pillar section extending from the external surface, and a head section formed at the end of the pillar section.

A method of bonding a mini-core to a surface of a core is provided. The method includes providing the mini-core with an attachment device that includes a protrusion of a surface of the mini-core, dipping the protrusion into a supply of paste to transfer a fixed quantity of paste to the protrusion and affixing the protrusion to the surface of the core with the fixed amount of paste interposed between the surface and the protrusion.

A method of bonding a mini-core to a surface of a core is provided. The method includes providing the mini-core with an attachment device that includes a protrusion of a surface of the mini-core, dipping the protrusion into a supply of paste to transfer a fixed quantity of paste to the protrusion and affixing the protrusion to the surface of the core with the fixed amount of paste interposed between the surface and the protrusion.

The clamping device has a fixed platen, a moving platen which is movable in an mold opening and closing direction relative to the fixed platen, a tie bar which bridges the fixed platen and the moving platen, a pullout drive device which gives to the tie bar a driving force making the tie bar move to the back side of the fixed platen, and a support mechanism which is provided separately from the pullout drive device and support the load of the tie bar when moving the tie bar.

The clamping device has a fixed platen, a moving platen which is movable in an mold opening and closing direction relative to the fixed platen, a tie bar which bridges the fixed platen and the moving platen, a pullout drive device which gives to the tie bar a driving force making the tie bar move to the back side of the fixed platen, and a support mechanism which is provided separately from the pullout drive device and support the load of the tie bar when moving the tie bar.

An apparatus for producing a piston may include a casting mold having an axially open cavity defining a surrounding cavity wall, the cavity wall being profiled to receive an annular core to define a cooling duct geometry. A core holding device may be adjustable in an axial direction for introducing the core into the casting mold. The core holding device may include a gripping device for gripping the core. The gripping device may include a plurality of spreadable first grippers. The plurality of first grippers may be adjustable at least between a first position, in which the plurality of first grippers are arranged in a radially inner position, and a second position, in which the plurality of first grippers transition radially outwards in relation to the first position and support the core.

A casting die is formed from a mold half with a mold insert disposed at least partly in a relief of the mold half. The mold insert is mounted movably in the relief.