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公开(公告)号：US4086122A
公开(公告)日：1978-04-25
申请号：US751828
申请日：1976-12-17
CPC分类号： B29C65/06 , B29C66/54 , B29C66/8322 , B29C66/9512 , B29C65/0618 , B29C66/542 , B29C66/9513 , B29C66/9517 , Y10T156/1744
摘要： Apparatus is described for welding of thermoplastic parts and the like where the heat to melt the surface or surfaces to be joined is produced by friction during high frequency rubbing. The parts are adapted to be placed on a platen which enables the mating surfaces of the parts to be brought into clamping engagement in a welding head. The welding head includes a seismic mass. Stiff flexural members support a plate, against which the parts are clamped with respect to the seismic mass, and which provides for relative vibratory motion of the mating surfaces to be joined. A hydroacoustic driver is coupled to the plate and causes the plate to execute linear vibratory motion at a high frequency, where the stiffness of the flexural members is resonant with the mass of the vibrated portions of the head. Due to the stiffness of the flexural member and the high frequency of vibration, the relative displacement of the mating surfaces to be joined during vibration can be extremely minute. When vibration stops, the restoring force due to the high stiffness of the flexural members brings the parts into alignment without an auxiliary means. The parts fuse together during cooling at the end of the welding cycle. Then the platen is released and the welded parts may be removed from the apparatus.
摘要翻译： 描述了用于焊接热塑性部件等的装置，其中通过在高频摩擦期间的摩擦来产生熔化要接合的表面或表面的热量。 这些部件适于放置在压板上，这使得部件的配合表面能够被夹紧在焊接头中。 焊头包括地震块。 刚性弯曲构件支撑板，相对于地震块，部件被夹紧，并且其提供待接合的配合表面的相对振动运动。 水声驱动器联接到板上并使板在高频下执行线性振动运动，其中弯曲构件的刚度与头部的振动部分的质量共振。 由于弯曲构件的刚度和振动的高频率，振动期间要接合的配合表面的相对位移可以非常小。 当振动停止时，由于弯曲构件的高刚度引起的恢复力使得零件在没有辅助装置的情况下对准。 在焊接周期结束时，部件在冷却过程中熔合在一起。 然后压板被释放，焊接部件可以从设备中取出。
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