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1.发明授权
公开(公告)号：US4676938A
公开(公告)日：1987-06-30
申请号：US819047
申请日：1986-01-15
CPC分类号： B29C51/261 , B29C44/146 , B29C51/18 , B29C51/04 , B29K2105/04 , B29K2105/20
摘要： A differential pressure thermoforming machine has a female mold with a female mold cavity, and an opposing mold, with a mold closing portion cooperable therewith. A foam injection head is perimetrally separated from the mold closing portion and is provided on the opposing mold. When the molds are initially closed, a differential pressure is created in the molds to cause the heated plastic sheet to move into contact with the mold cavity and form a configured pocket in the sheet. Mechanism is provided for releasing the plastic sheet from the carriage in which it has been moved between the molds, after the molding operation, to the cavity in the female mold, after which the molds are restored to spread-apart position. Mechanism is then activated to move the opposing mold to a position in which the foam injection head is now aligned with the female mold, whereupon the molds are again closed to bring the injection head into the pocket, whereupon the foam injection head is operated to charge a settable foam material to the pocket formed.
摘要翻译： 差压热成型机具有具有阴模腔的阴模和相对的模具，与其配合的模具封闭部分。 泡沫注射头与模具闭合部分周边分开并设置在相对的模具上。 当模具最初关闭时，在模具中产生压差，以使加热的塑料片材移动成与模腔接触并在片材中形成配置的袋。 提供了用于将塑料片从模具之间在模具之间移动的托架上释放到模具中的空腔中，然后模具恢复到展开位置。 然后启动机构以将相对的模具移动到其中泡沫注射头现在与阴模对齐的位置，于是再次关闭模具以将注射头带入口袋中，由此泡沫注射头被操作以充电 将可固定的泡沫材料制成口袋。
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公开(公告)号：US4079232A
公开(公告)日：1978-03-14
申请号：US616408
申请日：1975-09-24
CPC分类号： B29C51/421 , B29C35/02 , B29C51/18 , B29C2035/0211 , Y10S72/709
摘要： Contact heater station mechanism for use in a thermoforming machine for particularly forming thermoplastic synthetic plastic and superplastic metal alloy sheets into shapes, such machines having a sheet transfer station, a heating station, and a forming station with relatively movable mold parts, and providing a circuit for sheet carrying carriages which index individually clamped sheets from one station to another cyclically in a path of travel. The mechanism includes platens mounted on the machine frame at the heating station to move toward and away from the path of travel of the carriages and sheets. A heater carrrier for elongate electrical resistance heaters carries a contactor plate, and is rigidly mounted to each platen in a manner to permit universal thermal expansion of the carrier and plate with respect to the platen. A motor is provided for moving each platen toward and away from a carriage indexed to the heating station to move the contactor plates into and out of heat transfer relationship with the sheet releasably clamped to the carriage.
摘要翻译： 用于特别形成热塑性合成塑料和超塑性金属合金板的热成型机的接触加热器机构，具有片材转移站，加热站和具有相对可移动的模具部件的成型站的机器，并且提供电路 用于在行进路径中循环地将单个夹持的片材从一个站点到另一个站点的索引。 该机构包括安装在加热站的机架上的台板，以朝向和远离托架和片材的行进路径移动。 用于细长电阻加热器的加热器加载器承载接触器板，并且以允许载体和板相对于压板的通用热膨胀的方式刚性地安装到每个压板。 提供电动机，用于将每个压板移向和远离指向加热站的滑架，以将接触器板移动到与可释放地夹紧在滑架上的薄片的传热关系中。
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