公开(公告)号：US06323468B1

公开(公告)日：2001-11-27

申请号：US09557883

申请日：2000-04-25

申请人： Donald K. Dabelstein ,  Larry E. Dolan ,  Stephen Christensen ,  David S. Nansen

发明人： Donald K. Dabelstein ,  Larry E. Dolan ,  Stephen Christensen ,  David S. Nansen

IPC分类号： B23K1301

CPC分类号： B29C65/3644 ,  B29C65/3668 ,  B29C65/368 ,  B29C66/1122 ,  B29C66/474 ,  B29C66/524 ,  B29C66/71 ,  B29C66/721 ,  B29C66/73921 ,  B29C66/91221 ,  B29C66/91411 ,  B29C66/91423 ,  B29C66/91431 ,  B29C66/91651 ,  B29C66/91655 ,  B29C66/9241 ,  B29C66/929 ,  B29C66/944 ,  B29C66/949 ,  B29C66/961 ,  B29K2105/06 ,  B29K2071/00

摘要： A static coil induction welding apparatus and method for induction welding thermoplastic composite structures. The apparatus includes a plurality of independent coil segments disposed adjacent one another in side-by-side fashion to form a coil pack. A plurality of such coil packs are disposed in side-by-side fashion to form a coil assembly which covers the entire area of the weld zone. An AC power supply associated with each coil pack applies an AC signal through a switching network to electrically energize its associated coil segments such that the AC signals are in predetermined phase relationships relative to one another, thus generating a plurality of eddy current loops in a susceptor placed between the components being welded. The switching network alternately switches the coil segments such that the AC signals applied to the coil segments are shifted back and forth between adjacently disposed coil segments repeatedly approximately every 0.5 seconds. This produces a back and forth lateral shifting of the induced eddy current loops by about one-half the width of one current loop to provide uniform heating of the susceptor. It also eliminates various drawbacks associated with dynamic coil induction welding systems, allows feedback control over the power applied to each coil pack, and produces welds of even more consistent and higher quality than can be achieved with previously developed dynamic coil systems.

摘要翻译： 一种用于感应焊接热塑性复合结构的静态线圈感应焊接设备和方法。 该装置包括并排设置的多个独立的线圈段，以形成线圈组。 多个这样的线圈组以并排的方式设置以形成覆盖焊接区的整个区域的线圈组件。 与每个线圈组相关联的AC电源通过开关网络施加AC信号以对其相关联的线圈段进行电激励，使得AC信号相对于彼此处于预定的相位关系，从而在基座中产生多个涡流回路 放置在被焊接的部件之间。 交换网络交替地切换线圈段，使得施加到线圈段的交流信号在相邻设置的线圈段之间来回大约每0.5秒重复一次。 这引起感应涡流回路的横向偏移约一个电流回路的宽度的一半，以提供基座的均匀加热。 它还消除了与动态线圈感应焊接系统相关的各种缺陷，允许对施加到每个线圈组的功率进行反馈控制，并且产生比先前开发的动态线圈系统可以实现的甚至更一致和更高质量的焊接。