发明授权
US06138562A Vibrational energy waves for assist in the print release process for
screen printing
失效
振动能量波，用于帮助丝网印刷的打印释放过程
- 专利标题： Vibrational energy waves for assist in the print release process for screen printing
- 专利标题（中）： 振动能量波，用于帮助丝网印刷的打印释放过程
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申请号： US208959申请日： 1998-12-10
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公开(公告)号： US06138562A公开(公告)日： 2000-10-31
- 发明人: Allen D. Hertz , Eric L. Hertz , Dennis D. Epp
- 申请人： Allen D. Hertz , Eric L. Hertz , Dennis D. Epp
- 专利权人： Hertz; Allen D.,Hertz; Eric L.,Epp; Dennis D.
- 当前专利权人： Hertz; Allen D.,Hertz; Eric L.,Epp; Dennis D.
- 主分类号： B23K1/08
- IPC分类号： B23K1/08 ; B41F15/12 ; B41M1/12 ; H05K3/12 ; H05K3/34
摘要：
Solder Paste, adhesives and other materials are screen printed onto Printed Circuit Boards (PCB's) during the assembly process for electronic circuit assemblies. Pressure forces may be applied to the material to aid in separating the material from the apertures within the stencil. The pressure forces are created from sound pressure waves generated from a vibrational energy source located some distance from the stencil. Examples of non-contacting vibrational energy sources include Ultrasonic transducers, horns, speakers, and tuning forks. Additional assistance to separate the material from the apertures may be applied by a vibrational source by contacting to the stencil. Examples of the contacting vibrational energy sources may be off-balanced motors, piezo-electric transducers, and mass-resonant vibrators.
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