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公开(公告)号:US3801687A
公开(公告)日:1974-04-02
申请号:US3801687D
申请日:1972-03-10
申请人: GEN TIRE & RUBBER CO
发明人: COBBLEDICK D
IPC分类号: C08G18/00 , C08G18/82 , C08J9/00 , C08L1/00 , C08L7/00 , C08L21/00 , C08L27/00 , C08L75/00 , B29C5/00
CPC分类号: C08J9/0061 , C08J9/0019 , C08J2375/08 , C08J2427/00 , C08K5/02 , C08L27/06 , C08L75/08 , Y10S264/05 , Y10S521/918
摘要: POLYURETHANE FOAM PRODUCED FROM THE INTERREACTION OF AN INTIMATE BLEND OF A POLYETHERPOLYOL, WATER, SURFACTANT, CATALYST, POLYISOCYANATE AND A SMALL AMOUNT OF A CHLORINATED MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYVINYLCHLORIDE AND CHLORINATED PARAFFIN IS IRREVERSIBLY HEAT COMPRESSIBLE TO 100% SET AFTER 5 MINUTES AT 390 TO 430* F. TO ANY DESIRED DENSITY OR CONFIGURATION. SUCH FOAM IF USEFUL AS FLAT OR WAFFLED RUN UNDERLAY.
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公开(公告)号:US3744951A
公开(公告)日:1973-07-10
申请号:US3744951D
申请日:1971-11-26
申请人: CONTINENTAL CAN CO
发明人: SZATKOWSKI R
CPC分类号: B29C41/006 , B29C41/085
摘要: Molding is performed by directing streams of comminuted plastic material against surfaces of a heated form or mold, while repeatedly sweeping the form or mold across the streams, progressively depositing the material in one or more predetermined zones, so that the material assimilates progressively along the form or mold surfaces. Apparatus for so molding large receptacles, such as drum liners, includes a series of open molds supported, on a turntable for rotation of the molds about their horizontal axes, with the open ends facing radially outward. The table is indexed relative to the various stations, at which successive steps of preheating, deposition, postheating, cooling and stripping are performed. The deposition apparatus is on a carriage reciprocable radially of the table. A roll unit and several spray units direct streams of the material against the mold surfaces while the mold is rotated and maintained at a temperature suitable for incipient fusion of all the material substantially instantaneously upon impingement, so that the material adheres and fuses where deposited on the mold surfaces. When deposition is complete the mold passes through an arcuate oven overlying a sector of the table, for final sintering. The mold is then quenched, setting the material, whereafter the finished article is stripped from the mold.
摘要翻译: 通过将粉碎的塑料材料的流引导到加热的形式或模具的表面上,同时反复地将形式或模具横过料流扫过,将材料逐渐沉积在一个或多个预定区域中,从而使材料沿着该形式逐渐地同化 或模具表面。 用于模制大型容器(例如鼓衬套)的装置包括一系列开放的模具,其支撑在转盘上,用于使模具围绕其水平轴线旋转,开放端部朝向径向外侧。 该表相对于各个站进行索引,其中进行预热,沉积,后加热,冷却和汽提的连续步骤。 沉积装置位于桌子的径向往复运动的托架上。 辊单元和多个喷射单元将材料的流引导到模具表面上,同时模具旋转并保持在适合于在冲击时基本上瞬间熔化所有材料的温度,使得材料粘附并熔化,其中沉积在 模具表面。 当沉积完成时,模具通过位于工作台的扇形部分上的弧形烘箱,以进行最终烧结。 然后将模具淬火,固化材料,然后将成品从模具中剥离。
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公开(公告)号:US3743465A
公开(公告)日:1973-07-03
申请号:US3743465D
申请日:1972-01-03
申请人: JAMCO INC
发明人: ASNER J
CPC分类号: B29C33/0077 , B29C44/581 , B29C45/2803
摘要: A cut-off gate for a mold to prevent plastic material from oozing out of the mold opening after the nozzle has been removed. The mold is provided with a semi-spherical seat in communication with the mold cavity through an opening in the seat, a cut-off gate of substantially semi-spherical configuration having an outer semi-spherical surface adapted to engage the semi-spherical surface of the seat and also having an opening so that, in a closed position of the gate the two openings are out of registry with each other; in the open position, the openings in the gate and the seat are in registry with each other and with an opening in a supply nozzle. Means are provided for rotatably mounting the gate with respect to the semi-spherical seat, with further means responsive to the movement of the supply nozzle towards and away from the mold for rotating the gate into the open and closed positions,respectively.
摘要翻译: 用于模具的截止门,用于防止塑料材料在喷嘴被移除之后从模具开口渗出。 模具设置有通过座椅中的开口与模腔连通的半球形座,具有基本上半球形构造的截止门,其具有外半球形表面,该外半球形表面适于与半球形表面接合 座位并且还具有开口,使得在门的关闭位置,两个开口彼此不配准; 在打开位置,门和座中的开口彼此对准并且在供应喷嘴中具有开口。 提供了用于相对于半球形座椅可旋转地安装门的装置,其另外的装置响应于供应喷嘴朝向和远离模具的移动,用于分别将门旋转到打开和关闭位置。
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公开(公告)号:US3667882A
公开(公告)日:1972-06-06
申请号:US3667882D
申请日:1971-01-19
申请人: SUPER TIRE ENG CO
发明人: ROSS DONALD H
CPC分类号: B29D30/0606 , B29C33/00 , B29D30/02
摘要: A MOLD FOR INDUSTRIAL TIRES AND WHEELS OF POLYURETHANE AND THE LIKE HAS A LOWER PORTION, AN OPEN-TOP UPPER PORTION, A COVER FOR THE UPPER PORTION, AND PROVISION FOR SPACERS BETWEEN THE LOWER AND UPPER MOLD PORTIONS FOR ADJUSTING THE HEIGHT OF THE MOLD TO ACCOMMODATE TIRES OR WHEELS OF DIFFERENT AXIAL DIMENSIONS. THE MOLD RECEIVES AN ANNULAR HUB TO THE SURFACES OF WHICH A POLYURETHANE OR LIKE SOLID TIRE IS TO BE MOLDED. THE LOWER MOLD HAS A SPINDLE HAVING HOLLOW RADIAL ARMS WITH PINS THEREIN WHICH MAY BE CAMMED RADIALLY OUTWARDLY. A SLEEVE EXTENDS UPWARDLY FROM THE SPINDLE THROUGH THE LID OF THE UPPER MOLD PORTION. A STEM WITHIN SAID SLEEVE HAS A CAM AT ITS LOWER END AND A NUT AT ITS UPPER END. TURNING THE NUT CAUSES THE STEM TO MOVE DOWNWARDLY AND CAMS THE RADIAL PINS OUTWARDLY TO PRESS AGAINST THE INNER SURFACE OF THE ANNULAR HUB THEREBY TO MAINTAIN THE HUB CENTERED ABOUT THE AXIS OF THE MOLD. THE MOLD COVER HAS A HUB PORTION HAVING THEREIN CAM FOLLOWERS WHICH ENGAGE CAM SLOTS IN THE OUTER SURFACE OF THE SLEEVE SO THAT BY MOVING THE LID ROTATIONALLY THE LID IS CAMMED DOWNWARDLY INTO CLOSED POSITION.
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公开(公告)号:US3632243A
公开(公告)日:1972-01-04
申请号:US3632243D
申请日:1970-11-04
发明人: MOTT LAMBERT H
CPC分类号: B22F5/106 , B22C13/10 , B22F5/10 , B22F2998/00 , B30B11/001 , Y10S425/01 , Y10S425/019 , Y10S425/044
摘要: A spacer for use with a core rod, a flexible tubular mold disposed about the core rod, means introducing a powder between the core rod and the mold, and means sealing the ends of the tubular mold so that the powder may be compacted on subjecting the mold to fluid pressure, the compacted powder being removed and sintered to form porous seamless tubing; the spacer having a cylindrical outer shell larger in diameter than the inside of the mold, guide means sliding on the core rod and fixed to the shell positioning the shell concentrically about the core rod, the spacer containing at least one longitudinal opening allowing powder to flow therethrough, and handle means extending through the mold between the mold and the core rod so the spacer may be drawn upward through the tubular mold as powder flows through the opening in the spacer to be positioned about the core rod within the mold, the tubular mold on passage of the spacer contracting to hold powder against shifting.
摘要翻译: 用于芯棒的间隔件,围绕芯棒设置的柔性管状模具,意味着在芯棒和模具之间引入粉末,以及密封管状模具的端部的装置,使得粉末可以在经受 模具到流体压力,去除压实的粉末并烧结以形成多孔无缝管; 所述间隔件具有直径大于所述模具内部的圆柱形外壳,所述导向装置在所述芯棒上滑动并固定到所述壳体,所述壳体围绕所述芯棒同心地定位所述壳体,所述间隔件包含允许粉末流动的至少一个纵向开口 以及通过模具延伸穿过模具和芯棒之间的手柄装置,使得当粉末流过间隔件中的开口以便围绕模具内的芯棒定位时,间隔件可以向上拉出通过管状模具,管状模具 通过间隔件收缩以保持粉末不会偏移。
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公开(公告)号:US3561059A
公开(公告)日:1971-02-09
申请号:US3561059D
申请日:1967-10-10
发明人: GULDENFELS WILLY
IPC分类号: B29C31/00 , B29C41/00 , B29C41/04 , B29C41/06 , B29C41/22 , B29C41/36 , B29C41/40 , B29C57/00 , B29C70/16 , B29C5/00
CPC分类号: B29C41/365 , B29C41/042 , B29C41/06 , B29K2105/12
摘要: APPARATUS FOR CENTRIFUGALLY MOLDING TUBES OF REINFORCED PLASTIC MATERIAL INCLUDES ONE OR MORE ROTATABLY MOUNTED AND DRIVEN CENTRIFUGAL MOLDS, ARRANGED WITH THEIR AXES IN SPACED PARALLEL RELATION, AND A COMMON FEED DEVICE FOR THE PLASTIC MATERIAL AND THE REINFORCING MATERIAL COOPERABLE WITH EACH OF THE MOLDS. THE FRONT OR FEED END OF EACH MOLD IS ROTATABLY SUPPORTED ON ROLLER BEARING FOR LIMITED VERTICAL DISPLACEMENT OF THE FRONT END OF THE MOLD. THE OPPOSITE OR REAR END OF EACH OLD IS PROVIDED WITH A RELATIVELY SMALL DIAMETER AXLE JOURNAL SUPPORRTED ON A PIVOTALLY MOUNTED BALANCE BEAM BY MEANS OF BALL BEARINGS, THE BALANCE BEAM BEING PIVOTALLY SUPPORTED ON A FIXED BEARING BLOCK. MEANS ARE PROVIDED ADJACENET THE REAR END OF THE MOLD FOR EJECTING THE MOLDED PRODUCT FROM THE MOLD. THE FEED DEVICE IS PROVIDED WITH CONDUITS, CONNECTE TO SOURCES OF THE VARIOUS MATRIALS, AND WITH MEANS FOR SELECTIELY MIXING AND APPLYING THE MATERIALS TO THE INTERIOR SURFACE OF EACH MOLD.
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公开(公告)号:US3555611A
公开(公告)日:1971-01-19
申请号:US3555611D
申请日:1969-12-15
发明人: REITERMAN DONALD R
CPC分类号: B29D11/00528 , B29C33/00 , B29C33/0038 , B29D11/00413 , B29L2031/7602 , Y10S425/044 , Y10S425/808
摘要: A MOLD MEMBER FOR CASTING PLASTIC OPTICAL ELEMENTS AND UTILIZING AN ACCURATELY PREPARED RING OF RIGID MATERIAL FIXED TO ITS PERIPHERY FOR MULTIPLE FUNCTIONS INCLUDING A PROTECTIVE BUMPER AND GUARD FOR THE MOLD, AN ANCHOR FOR A SEALING GASKET AND AS A SEAL ENGAGING SURFACE FOR
A MOLD GASKET. THE RING ALSO FACILITATES THE HANDLING OF THE MOLD MEMBERS DURING CLEANING AND USE GENERALLY.-
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公开(公告)号:US3507738A
公开(公告)日:1970-04-21
申请号:US3507738D
申请日:1966-01-24
CPC分类号: E04C2/205 , B29C39/00 , B44C5/04 , Y10T428/233 , Y10T428/24149 , Y10T428/249969 , Y10T428/249991
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公开(公告)号:US3481003A
公开(公告)日:1969-12-02
申请号:US3481003D
申请日:1967-10-09
发明人: TAYLOR JOHN J , WALE EDWARD H
CPC分类号: B29D35/0018
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