TK26522.Chip Vacuum Check.pdf - 第4页

S M T S o f t w a r e E n g i n e e r i n g G r o u p I M O p e r a t i o n s Y A M A H A M O T O R C O . , L T D MDOC-SOFT50395 2. Function overview 2.1 Outline Between “after camera recognition of picked parts” and “be…

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SMT Software Engineering Group
IM Operations YAMAHA MOTOR CO., LTD
MDOC-SOFT50395
1. Purpose of function
1.1 Background
On small chip parts such as 0603, difference of vacuum level between open and close is
too small to judge parts existence properly. Therefore, parts existence used to be checked
by camera recognition, but it couldn’t find dropped parts after recognition.
1.2 Purpose
This function enables parts existence check by vacuum level from after camera
recognition until before mounting. This will prevent mount failure and misalignment.
SMT Software Engineering Group
IM Operations YAMAHA MOTOR CO., LTD
MDOC-SOFT50395
2. Function overview
2.1 Outline
Between “after camera recognition of picked parts” and “before mounting”, vacuum level is
monitored for checking of parts existence. It memorizes the highest vacuum level, and
judges “parts fall” if the vacuum level drops below a certain level(※) from the peak.
(※) Specified for each nozzle type in Machine Setting.
2.2 Period of Chip Vacuum Check
Vacuum level is monitored between “after camera recognition of picked parts” and “before
mounting” for all heads(nozzle type) that are set with [Chip Vacuum Check] active and also
picking parts.
Fig 2.1 Vacuum level monitoring time
SMT Software Engineering Group
IM Operations YAMAHA MOTOR CO., LTD
MDOC-SOFT50395
2.3 Timing to output errors
Between “after camera recognition of picked parts” and “before mounting”, it monitors
vacuum level for checking of parts existence. The error is not output just after a chip is
dropped off. Timing to display the error is as follows.
When chip is dropped from mounting head
The error message is displayed when XY-axis arrives at the mounting position. At
this time, the error message is displayed for each error head.
When chip is dripped from other than mounting head
The error occurs when mounting of mount head is completed. At this time, the error
message is displayed for each error head.