公开(公告)号：US5110615A

公开(公告)日：1992-05-05

申请号：US756447

申请日：1991-09-09

申请人： Philip P. Maiorca ,  Ronald N. Abernathy ,  George H. Wadley

发明人： Philip P. Maiorca ,  Ronald N. Abernathy ,  George H. Wadley

IPC分类号： H05K3/34 ,  H05K13/04

CPC分类号： H05K13/0469 ,  H05K3/3484

摘要： A method is provided for dispensing viscous materials which first requires the step of providing a dispensing device for holding a quantity of a viscous material to be dispensed through a tip thereof. Next, the dispensing device is coupled to a dispensing control so that a metered amount of viscous material will be dispensed in response to a dispensing control signal. Next, the dispensing device is moved along an axis to selectively position the tip a predetermined distance away from the surface of a workpiece positioned adjacent thereto in response to an applied height control signal. The height control signal is generated by processing output signals from a camera which is moved along the axis with the dispensing device to determine when an image of the workpiece surface is maximally in focus. The final step of the method is to cause the dispensing control to apply the dispensing control signal to cause a metered amount of the viscous material to be dispensed from the tip of the dispensing device onto the workpiece surface.

摘要翻译： 提供了用于分配粘性材料的方法，其首先需要提供用于保持一定量的待分配的粘性材料通过其尖端的分配装置的步骤。 接下来，分配装置联接到分配控制器，使得响应于分配控制信号将分配计量的粘性材料。 接下来，分配装置沿着轴线移动，以响应于所施加的高度控制信号来选择性地将尖端定位离开与其相邻的工件的表面预定的距离。 通过处理来自照相机的输出信号来产生高度控制信号，所述照相机利用分配装置沿轴线移动，以确定工件表面的图像何时最大程度地聚焦。 该方法的最后一步是使分配控制器施加分配控制信号，以使计量的粘性材料从分配装置的尖端分配到工件表面上。

公开(公告)号：US5052338A

公开(公告)日：1991-10-01

申请号：US549379

申请日：1990-07-05

申请人： Philip P. Maiorca ,  Ronaldo N. Abernathy ,  George H. Wadley

发明人： Philip P. Maiorca ,  Ronaldo N. Abernathy ,  George H. Wadley

IPC分类号： H05K3/34 ,  H05K13/04

CPC分类号： H05K13/0469 ,  H05K3/3484

摘要： A syringe or other suitable dispensing device is coupled to conventional controls for dispensing viscous material such as adhesives or solder paste through a tip thereof. The syringe is supported on a motor driven carriage for movement along a Z axis in response to height control signals. A camera also mounted on the carriage generates output signals representative of an image of the surface of a workpiece such as a PC board. Circuity processes the output signals from the camera to determine when the image is maximally in focus and generates the height control signals necessary to maintain the tip of the syringe a predetermined constant height above the surface of PC board. This ensures the dispensing of uniform balls of solder paste or adhesive at various locations on the PC board despite warpage in the board.

摘要翻译： 注射器或其他合适的分配装置联接到常规控制器，用于通过其尖端分配诸如粘合剂或焊膏的粘性材料。 注射器被支撑在马达驱动的托架上，以响应于高度控制信号沿Z轴运动。 也安装在滑架上的相机产生表示诸如PC板的工件的表面的图像的输出信号。 循环处理来自相机的输出信号，以确定图像何时最大程度地聚焦，并产生将注射器的尖端保持在PC板表面上一个预定的恒定高度所需的高度控制信号。 这确保了在PC板上的各种位置分配焊膏或粘合剂的均匀球，尽管板上翘曲。