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1. 发明授权

US4978825A Thermoplastic composite induction welder 失效
标题翻译：热塑复合感应焊机
公开(公告)号：US4978825A
公开(公告)日：1990-12-18
申请号：US433883
申请日：1989-11-08
申请人： Wayne W. Schmidt , William P. Benjamin , Robert A. Grimm
发明人： Wayne W. Schmidt , William P. Benjamin , Robert A. Grimm
IPC分类号： B29C65/00 , B29C65/36 , H05B6/02
CPC分类号： B29C66/81811 , B29C65/3636 , B29C66/112 , B29C66/1122 , B29C66/131 , B29C66/43 , B29C66/524 , B29C66/7392 , B29C66/81267 , B29C66/83413 , B29C66/8362 , B29C66/861 , B29C66/865 , B29C66/91645 , B29C66/91651 , B29C65/3668 , B29C65/3676 , B29C65/3696 , B29C66/71 , B29C66/721 , B29C66/7212 , B29C66/72141 , B29C66/73921 , B29C66/8122 , B29C66/8181 , B29K2995/0027
摘要： Induction heating of thermoplastic composite materials is accomplished to form a continuous bonded joint. A zone of optimum heating can be created by an induction heating coil mounted within and adjacent to the drum of a hollow circular roller of non-conductive material (i.e., transparent to the RF field) so that an induction heating field can be created and localized to create a zone of optimum heating at the joint area of the material to be bonded. Simultaneously pressure to that area can be applied by the circular roller. In a preferred form, the roller is semi-rigid to permit spreading of the contact surface with the joint area to avoid absolute contact line loading. A hand held induction heating unit with a finger operable power switch can be moved in a back and forth manner over the joint to apply heat when the switch is turned on and effect consolidation when the switch is turned off. Using the techniques of the invention, one can fuse two contacting members which are comprised of filamentary reinforced composite materials in which the matrix resin at the joint interface is a member of the thermoplastic family of polymers. The invention concentrates radio frequency (RF) energy at the joint interface which heats the surrounding layers and simultaneously provides for the application of a controlled force normal to the mid-plane of the joint to retain compaction of the laminates which would normally be relieved in a hot unrestrained condition.
摘要翻译：实现热塑性复合材料的感应加热以形成连续的接合接头。可以通过安装在不导电材料的中空圆形滚筒的滚筒内并与其相邻的感应加热线圈（即，对RF场透明）来产生最佳加热区域，从而可以产生和定位感应加热场以在待结合的材料的接合区域处产生最佳加热区域。同时可以通过圆形辊施加对该区域的压力。在优选的形式中，辊是半刚性的，以允许接触面与接合区域的铺展，以避免绝对的接触线负载。具有可手指操作的电源开关的手持式感应加热单元可以在接头上前后移动，以在开关打开时施加热量，并在开关断开时进行整合。使用本发明的技术，可以熔化由丝状增强复合材料组成的两个接触构件，其中接合界面处的基体树脂是热塑性聚合物族的成员。本发明将射频（RF）能量集中在加热周围层的接合界面处，并且同时提供垂直于接头的中间平面的受控力的施加，以保持层压体的压实，这通常将被释放在热无条件的条件。

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