摘要:
A mould for stratified moulding with metalostatic pressure compensation formed by one or more stackable moulds formed by a tapping cavity of a generally rhomboidal truncated cone shape and one or more moulding cavities connected to the tapping cavity by one or more supply conduits; in such a way that each tapping cavity of each stackable mould interconnects to form a central filling collector, and each tapping cavity compensates for the metalostatic pressure of the molten metal as it is drained by the central filling collector to achieve generally uniform filling of each of the moulding cavities of each of the stackable moulds. In addition, the generally rhomboidal double truncated cone shape serves to keep a temperature distribution in the mould during the pouring of molten metal.
摘要:
The disclosed invention provides a molding machine that defines upper and lower molding spaces while cope and drag flasks 12,13 and a match plate 11 clamped therebetween are rotated from a horizontal position to a vertical position, and that readily places a core into a lower mold within the drag flask. An upper squeeze member 14 is insertable into the cope flask 12 with its pressure-applying plane being opposed to the upper face of the match plate 11. The pressure-applying plane defines an upper molding space together with the upper face of the match plate 11 and the cope flask 12. A pivoting frame 23 supports the cope and drag flasks 12,13, a match plate 11 clamped therebetween, and the upper squeeze member 14, such that they rotate in unison between a horizontal position, in which the pressure-applying plane of the upper squeeze member 14 is oriented vertically downward, to a vertical position in which the pressure-applying plane is oriented horizontally. A fixed, vertical, filling frame abuts the drag flask 13 when the flasks 12, 13 and the match plate 11 that is clamped therebetween are in the vertical position. A lower squeeze member 16 has a pressure-applying plane that is oriented horizontally, and is insertable into the filling frame and the abutting drag flask 13. The pressure-applying plane of the lower squeeze member 16 defines a lower molding space together with the lower face of the match plate 11, the drag flask 13, and the filling frame 15. To place a core into a lower mold within the drag flask, the drag flask 13 is laterally moved from a position that is immediately beneath the cope flask 12 such that an open working space is provided.
摘要:
A mold assembly includes a bottom mold having a plurality of concavities defined therein and a top mold which includes a recess defined in an underside thereof so that the bottom mold is engaged with the recess. The length of the recess between two insides is less than a length of the bottom mold so that the bottom mold is snugly engaged with the recess by proper scalability of the metal material of the top and bottom molds. A plurality of through holes are defined through the top mold and located corresponding to the concavities. Forming material is pouted into the concavities via the through holes.
摘要:
An ice tray assembly for a refrigerator is provided, which comprises: a case; at least one ice tray disposed in the case; a water box provided at a lateral surface of the ice trays to supply water to the ice trays; and at least one discharge hole provided at the water box corresponding to the number of the ice tray. According to the present invention, the ice tray assembly for the refrigerator is capable of supplying water to the plurality of ice trays at once, of easily supplying water to the ice trays disposed at an upper layer portion in general, as the water box is disposed at the lateral surface of the ice trays, and of uniformly supplying water to each of the plurality of the ice trays.
摘要:
The molding machine comprises a station (1) with a chamber (2) that is closed between a front plate (5) that can move and swivel and a rear plate (8) associated to an extraction piston (9), forming a shell (3) in said chamber (2) by blowing sand through an upper hopper (4). The shell (3) obtained is pushed by the piston (9) until the rear of a row of shells (3′) placed on a conveyor (7) that places them opposite a casting station. The motion of the shell (3) pushed by the extraction piston (9) is independent of the motion of said piston after being incorporated in the row of shells, and is provided exclusively by the conveyor system (7), thereby providing a shorter working cycle while preventing deterioration of the shells as they are not compressed by the piston (9) when it pushes against the rear of the row of shells (3′).
摘要:
A method of producing an array of interconnecting contacts for an integrated circuit package, such as a flip chip integrated circuit, and connecting the array of interconnecting contacts to the package utilizes a mold to form the array and attach the array to the package. The method may also be used to interconnect two integrated circuit die. The mold defines a desired shape and relative position for a plurality of interconnecting contacts which make up the array of interconnecting contacts. The array of interconnecting contacts are molded by filling the mold with a desired contact forming material such as solder paste. The mold containing the molded array of interconnecting contacts is positioned adjacent to the integrated circuit package such that each interconnecting contact is positioned adjacent to a corresponding contact pad of the integrated circuit package. And finally, the molded interconnecting contacts are attached to their corresponding contact pads of the integrated circuit package. In the case in which solder paste is utilized as the molding material, the solder is reflowed to attach the array to the package.
摘要:
The sand-metal ratio of a mold used for casting a crank shaft or cam shaft having discrete shapes is reduced to make the mold more compact. Basic discrete cavities (15) including cavities (6) corresponding to one half of shaft portions and cavities (7) corresponding to one half of cam portions are staggered by axially offsetting them in horizontal and/or vertical direction.
摘要:
In an apparatus for vacuum countergravity casting of molten metal, a gas permeable, self-supporting mold is supported in an inverted casting position in an open bottom container with a particulate bed compacted about the mold. The mold may comprise a mold stack having a plurality of mold members stacked side-by side to form a plurality of mold cavities therebetween. The particulate bed may comprise loose, unbonded particulate compacted in-situ about the mold to support the mold stack in the container and press the mold members sealingly together before, during and after filling with molten metal.
摘要:
A plurality of identical green sand molds are sequentially formed by horizontal compaction on automatic mold making machinery. Each mold has a front and back vertical face with a recess formed in the front face and a plurality of down runners formed in the back face. A mold piece insert is formed of a mixture of green sand and a chemical bonding agent, preferably a resin binder and cold set in a pattern box to form the cavities for the cast articles. The mold piece insert is received flush in the mold front face recess with the cavities opening to the front face. A plurality of molds, with inserts, are adjoined in front-to-back relationship with the down runners overlapping the cavities for feeding the molten pour thereto.
摘要:
A molding box apparatus having a horizontal tubular body and a pair of pattern plates having pattern surfaces complementary to the mold chambers to be formed fitting in the tubular body, at least one of the pattern plates being slidable in the tubular body. The apparatus further has a well pattern provided on the pattern surface of one of the pattern plates and a runner pattern provided on the well pattern and extending from one end of the latter substantially perpendicularly to the pattern surface. The end of the runner pattern is adapted to be slidingly received by a guide hole formed in the other pattern plate. With this apparatus, it is possible to easily produce a mold part of a vertical split type flaskless mold assembly.