Invention Grant
- Patent Title: Vacuum nozzle having back-pressure release hole
- Patent Title (中): 真空喷嘴具有背压释放孔
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Application No.: US13898327Application Date: 2013-05-20
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Publication No.: US09022444B1Publication Date: 2015-05-05
- Inventor: Parag K. Chhajed
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA Irvine
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA Irvine
- Main IPC: B25J15/06
- IPC: B25J15/06

Abstract:
A pick-and-place vacuum nozzle including a a nozzle body, a vacuum chamber within the nozzle body, a cavity formed in a lower surface of the nozzle body below the vacuum chamber, wherein the cavity is shaped to hold a head gimbal assembly, a back pressure relief hole passing through the nozzle body and connected to the vacuum chamber, the back pressure relief hole communicating with an exterior of the nozzle body, wherein a diameter of the back pressure relief hole is between 0.5 mm and 1 mm. The backpressure relief hole prevents light parts from sticking to the nozzle tip after vacuum is no longer applied.
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