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#163 Production Technology Improvement Course for Machine Designers - 33: In-mold Assembly Style Low Cost Automation - 4

Category : Automation elements technology
July19, 2013

(1) Units comprising in-mold assembly LCA

The in-mold assembly LCAs are comprised of the following units.

a)Linear motion unit (Up/Down direction)
b)Linear motion unit (Fore/Aft direction)
c)Crimping/Swaging/Press unit
d)Positioning unit←
e)Linear actuator
f)Posts

(2) Example of positioning unit construction

- In the case of in-mold assembly LCA, following three positioning units will be needed.
1) Workpiece positioning
2) Fore/Aft unit positioning
3) Up/Down unit positioning
-These three positioning units are selected based on load weight, accuracy, and concerns for scratches, etc.

(1) Basic type of positioning
-Anti-wear measures over long period of usage are important for the positioning system to prevent locating/positioning accuracy degradation.
-The positioning basic is a set of locating bushings and locating pins with anti-wear measures applied.

[Fig.1] Example of Pick & Place positioning unit mechanism

(2) Workpiece positioning and Up/Down direction positioning example

■Explanation
-Select the locating pins (JPS) and locating bushings to make the spacing between the fixture plates as designed.
-In this condition, the resin type locating pins (MJP) are to hold down the PCB at four corners.
-The PCB is position located with 3 locating pins.
-The additional work and inspection are applied through the opening located in the center of the top fixture plate.

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