Printer 600 Adjustable Screen Mount.pdf - 第9页
$'-867$ %/(6&5((1 02817 $60 0(&+$ 1,&$/'( 7$,/ Chapter Issue 3 May 03 Technical Reference Manual 12.9 Depth Adjuster Figure 12-6 Depth Adjust er The depth a djuster c onsist s of the foll owin…
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12.8 Technical Reference Manual Chapter Issue 3 May 03
Left Rail Assembly The left hand chase rail assembly is attached to the chase assembly in a similar
manner to the right hand chase rail assembly. Web assemblies fitted to either
end of the rail, clamp the rail to the front and rear linear ball bush shafts within
the chase assembly.
Attached to the inner face of the rail assembly are sections of the stencil guide
strip, providing a datum face for a loaded screen. The stencil support plate
attached to the underside of the rail assembly provides support to a loaded
screen.
Figure 12-5 Left Hand Chase Rail Assembly
A pneumatic double acting cylinder corresponding to the one fitted in the right
hand chase assembly works in a similar manner to the right hand cylinder
raising or lowering the four flap assemblies, clamping or releasing the screen.
The Screen at Centre opto receiver is fitted to the left hand chase rail assembly.
Stencil Guide Strips
(in 5 positions)
Screen at Centre
Opto Receiver
Stencil Support Plate
Flap Assembly
(in 4 positions)
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Chapter Issue 3 May 03 Technical Reference Manual 12.9
Depth Adjuster
Figure 12-6 Depth Adjuster
The depth adjuster consists of the following:
• Lockable sliding pointer
• Stencil stop
• Guide tube
The depth adjuster is fitted to the right hand chase rail assembly via two
brackets. The adjuster can be repositioned on the chase rail to accommodate
small screens by provision of two sets of key shaped mounting holes on the
brackets.
The sliding pointer is attached to a sliding guide strip which is slid into the top
of guide tube. The pointer is locked in position by means of clamping the guide
strip to the top of the guide tube by a threaded locking star grip. A metric and
an imperial scale is affixed to the guide tube for precise adjustment of the chase
to accommodate all sizes of screen. The stencil end stop attached to the end of
the sliding guide strip correctly positions the screen in the chase for printing.
Stencil Stop
Scale
Bracket
(in two positions)
Star Grip
Pointer
Guide Tube
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12.10 Technical Reference Manual Chapter Issue 3 May 03
Web Assemblies Fitted to either end of the left and right hand rail assemblies, the web assemblies
allow for adjustment of the rails to accommodate for different size screens. The
webs clamp onto the linear ball bush shafts by means of a spring loaded locking
piston. Pneumatic pressure is applied to the locking piston compressing the
locking spring and releasing the web assembly from the linear ball bush shaft.
Hence, the rail assembly width can now be adjusted.
Pneumatic pressure is applied to the web assemblies via the valve fitted to the
front web assemblies’ rail width brackets. The user operates the appropriate
valve applying pneumatic pressure to the front and rear web assemblies
simultaneously, resulting in the web assembly being released from the linear
ball bush shaft allowing the rail to be adjusted as required.
On completion of the adjustment, the user releases the valve releasing the
pneumatic pressure applied to the webs allowing the locking shaft piston to
clamp onto the linear ball bush shaft under spring action.
Figure 12-7 Front Web Assembly
Rail Width
Bracket
Push Button
Pneumatic Valve