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13 条记录 (耗时 0.017 秒)

    Method of making molds
    7.
    发明授权
    Method of making molds 失效
    制作MOLDS的方法

    公开(公告)号：US3688830A

    公开(公告)日：1972-09-05

    申请号：US3688830D

    申请日：1969-08-28

    申请人： ELIZABETH F THOMPSON ,  FRANSETH PAUL ,  MICHAEL M WILD ,  THOMPSON MFG CO EARL A

    发明人： DEBERG WALTER H VAN ,  THOMPSON EARL A

    IPC分类号： B22C15/24 ,  B22C23/02 ,  B22C15/22

    CPC分类号： B22C23/02 ,  B22C15/24

    摘要： A series of expendable shell molds is formed in a permanent pattern having a series of connected mold cavities. A passage extends from outside the pattern into each end of the series. A suspension of parting agent is blown by gas or superheated steam into the cavities through one of the passages while the other is vented through an orifice of controlled size to maintain the desired pressure. To coat evenly the parting agent may then be blown in the opposite direction through the cavities. Thereafter molding sand is blown into the pattern through one or both of the passages. Imperfect closing of the separatable pattern is detected by blowing air into a third passage which ends at the parting plane. The air is supplied from a constant pressure source through an orifice of predetermined size and the pressure is measured on the down-stream side of the orifice. A blow box connected to a sand hopper is pivoted to be swung toward and away from the pattern. A sand valve and a vent valve cooperate to dump sand from the hopper rapidly into the blow box. Gas under pressure is distributed throughout the sand from below to fluidize the sand and simultaneously force is applied above the sand to flow the mass into the pattern.

    摘要翻译： 一系列消耗性壳模具形成为具有一系列连接的模腔的永久模式。 通道从图案外部延伸到系列的每一端。 分离剂的悬浮液通过气体或过热蒸汽通过一个通道吹入空腔，而另一个通过可控尺寸的孔排放以保持所需的压力。 为了均匀地涂覆分离剂，然后可以通过空腔沿相反方向吹送。 此后，通过一个或两个通道将型砂吹入图案。 通过将空气吹入在分型平面上结束的第三通道来检测可分离图案的不完全关闭。 空气从恒压源通过预定尺寸的孔提供，并且在孔的下游侧测量压力。 连接到砂斗的吹气箱枢转以朝向和远离模式摆动。 砂阀和排气阀配合，将料斗中的沙子快速吸入吹风箱。 压力下的气体从下面分布在整个沙子中，以使沙子流态化，同时将力施加在沙子上方以将物质流入模式。

    Mold making device having blow nozzle
    8.
    发明授权
    Mold making device having blow nozzle 失效
    具有吹瓶喷嘴的模具制作装置

    公开(公告)号：US3684000A

    公开(公告)日：1972-08-15

    申请号：US3684000D

    申请日：1969-08-28

    申请人： THOMPSON MFG CO EARL A

    发明人： DEBERG WALTER H VAN

    IPC分类号： B22C15/24 ,  B22C23/02 ,  B22C15/22

    CPC分类号： B22C23/02 ,  B22C15/24

    摘要： A series of expendable shell molds is formed in a permanent pattern having a series of connected mold cavities. A passage including the cavities extends through the pattern. A swinging blow-vent nozzle is mounted at each end of the passage, the two nozzles being rotationally fixed to each other. In one position the first nozzle blows into the pattern while the second nozzle vents the pattern. In a second position the second nozzle blows into the pattern while the first nozzle vents the pattern. In a third position one of the nozzles blocks the passage while the other has been swung out of the way to provide access for a sand blow box which can then blow sand into the pattern. The nozzles are clamped against the pattern by a hydraulic cylinder which moves them toward each other on a shaft. The device includes means for separating the pattern, lifting the gang of molds out of the pattern and stripping the molds from pins on which they are formed or by which they are lifted. The device for elevating the finished molds includes means for blowing out the molds as the patterns are raised. The apparatus is particularly suitable for making cores for making tappet bodies and for making molds for casting engine valves.

    摘要翻译： 一系列消耗性壳模具形成为具有一系列连接的模腔的永久模式。 包括空腔的通道延伸穿过图案。 在通道的每个端部安装有摆动吹风嘴，两个喷嘴彼此旋转地固定。 在一个位置，第一喷嘴吹入图案，而第二喷嘴喷出图案。 在第二位置，第二喷嘴吹入图案，而第一喷嘴排出图案。 在第三位置，其中一个喷嘴堵住通道，而另一个已经向外摆动，以提供进入沙子吹扫箱的通道，然后可以将沙子吹入图案中。 喷嘴通过液压缸夹紧在图案上，液压缸使它们在轴上彼此相对移动。 该装置包括用于分离图案的装置，将模具的组合从图案中提出，并将模具从它们所形成的销或者被提升的销上剥离。 用于提升成品的模具的装置包括当图案升高时吹出模具的装置。 该装置特别适于制造用于制造挺杆体的芯和用于制造用于铸造发动机阀的模具。