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    • 4. 发明公开
    • Improvements in and relating to compression moulding
    • VerbesserungenbezüglichFormpressen
    • EP0999024A1
    • 2000-05-10
    • EP98309133.1
    • 1998-11-06
    • Whiteley, Christopher James
    • Whiteley, Christopher James
    • B29C43/06B29C33/36B29C33/30
    • B29C43/06B29C33/303B29C33/36
    • A method of compression moulding of hot plastics material includes the steps of extruding a charge of plastics material into one of a plurality of lower mould halves (8) at a position remote from a press (1), transporting the lower mould half and charge of plastics material to the press and connecting it to engagement means (9) on the press which aligns the lower mould axially with a complementary upper mould (5) secured for axial movement to the press such that the lower mould is restrained from horizontal or vertical movement, pressing the upper and lower moulds together to form a moulding from the charge, retracting the upper mould to expose the upper part of the moulding, disengaging the lower mould from the engagement means and withdrawing it from the press for subsequent cooling and removal of the moulding from the lower mould at a position remote therefrom, charging a second lower mould (8) with a charge of plastics material and introducing the second lower mould into the moulding press after the first lower mould has been removed therefrom to produce another moulding. The method therefore permits mouldable lower mould halves to be also used to transport the raw charge of plastics material from the extruder to the press and thereafter the moulding from the press to a cooling station until sufficiently cooled to be removed therefrom, thereby maximising the use of the press and simplifying the handling of the plastics material before and after moulding. To facilitate this objective the moulding press and lower mould halves are modified to include cooperable engagement means preventing horizontal or vertical movement of each lower mould half relative to the upper mould half but by which each lower mould half may be easily inserted or removed from the press before and after moulding. In a further refinement the lower mould halves are made of a lightweight material such as aluminium and are supported against buckling on the press during moulding by a support bolster (4,7).
    • 热塑性材料的压缩成型方法包括以下步骤:在远离压机(1)的位置处将塑料材料挤压成多个下半模(8)中的一个,输送下模具半部 将塑料材料连接到压力机上并将其连接到压力机上的接合装置(9)上,使下模具轴向对准固定的用于向压机轴向移动的互补的上模具(5),使得下模具被限制在水平或垂直运动 将上模具和下模具压在一起以形成来自电荷的模制件,缩回上模以露出模制件的上部,使下模从接合装置脱离并将其从压力机中取出,以便随后冷却和除去 在远离其的位置从下模具成型,用塑料材料装入第二下模具(8)并将第二下模具引入模具 在第一个下模已经从其移除之后产生另一个模制件。 因此,该方法允许可模制的下半模也用于将塑料材料的原料从挤出机输送到压机,然后将模压从压机输送到冷却站,直到足够冷却以从其中去除,从而最大化使用 压制和简化塑料材料在成型前后的处理。 为了实现该目的,成型压模和下半模被改型成包括可配合的接合装置,以防止每个下半模相对于上半模的水平或垂直移动,但是每个下半模可容易地从压机中插入或移除 成型前后。 在进一步的改进中,下半模由诸如铝的轻质材料制成,并且通过支撑垫(4,7)在模制期间被支撑在压力机上。
    • 6. 发明公开
    • Method and apparatus for compression molding plastic articles
    • Verfahren und Vorrichtung zum Pressformen vonKunststoffgegenständen
    • EP0879686A2
    • 1998-11-25
    • EP98108677.0
    • 1998-05-13
    • OWENS-ILLINOIS CLOSURE INC.,
    • Ingram, Keith W.
    • B29C43/06B29C43/36
    • B29C43/42B29C33/20B29C33/36B29C43/08B29C43/34B29C2043/3288B29C2043/3618B29C2043/3689B29C2043/5883B29L2001/00B29L2031/565Y10S425/005Y10S425/809
    • A method and apparatus for compression molding plastic articles such as closures include a plurality of tools mounted in opposed pairs (32, 50) with the tools of each pair including opposed male and female mold sections (46, 58). The tool pairs are mounted for motion in an endless path. The tool pairs and associated mold sections are closed during motion in the path for compression a molding charge in the mold cavity formed between the mold sections of each pair and opened to release an article formed between the mold sections. A latch mechanism (70) is associated with each pair of tools for holding the tools and mold sections in the closed position during motion in the path independent of the mechanism for closing the tools and mold halves. In this way, forces imparted to the mold halves and tools to hold the mold closed are isolated from the machine frame. The latch mechanism is selectively unlatched to permit opening of the mold halves and release of the article compression-molded between the mold halves.
    • 用于压缩模塑诸如封盖的塑料制品的方法和装置包括多个以相对的对(32,50)安装的工具,每对工具包括相对的阳模和阴模部分(46,58)。 工具对安装成在无限路径中运动。 工具对和相关联的模具部分在运动过程中在运动过程中关闭,用于压缩在每对的模具部分之间形成的模腔中的模制装料,并打开以释放形成在模具部分之间的制品。 闩锁机构(70)与每对工具相关联,用于在运动期间将工具和模具部分保持在关闭位置,而与用于关闭工具和半模的机构无关。 以这种方式,赋予模具半部的力和将模具保持闭合的工具与机架隔离。 选择性地解锁闩锁机构以允许半模的打开和压缩模制在半模之间的制品的释放。