CP43维护手册.pdf.pdf - 第102页
Chapter 10 Cam Box 10.2 The Workings of the Cam The cam box consists of nine cams, one index cam and one cylinder cam. The purpose of these items are explained her e. 10.2.1 The Nine Cams The nine cams are used in the op…
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Chapter 10 Cam Box
10.Cam Box
The cam box, located on the upper part of the CP IV-3, consists of two
camshafts, nine cams, one index cam, one cylinder cam and a main motor
which drives the system. This mechanism drives the placing head and feeder
at stations 1, 3, 6, 7 and 11.
10.1Schematic Diagram and Parts of the Cam
Refer to the schematic of the inside of the cam box (figure 10-1) below.
This diagram is an overhead view oriented from the rear of the machine.
There is a seal attached to the cam lever. However, there is no seal
attached to the index cam or the cylinder cam. The labels, except for
parenthetical comments, are as listed on the machine itself.
Fig. 10-1 Cam Schematic Diagram
CP IV-3 Maintenance
Chapter 10 Cam Box
10.2The Workings of the Cam
The cam box consists of nine cams, one index cam and one cylinder cam.
The purpose of these items are explained here.
10.2.1The Nine Cams
The nine cams are used in the operation of the feeders and placing
heads.
Five cams operate at station 1 controlling the following areas of
operation:
• Feeder tape advance/retract
• Feeder tape advance
• Feeder parts push-up
• End tape cut
• Vertical movement of the nozzle
The remaining four each operate one of these functions:
• Pre-theta (vertical movement) at station 3
• Fine-theta (vertical movement) at station 6
• Nozzle (vertical movement) at station 7
• Nozzle changeover (vertical movement) at station 11
Fig. 10-2 The Operation of the 9 Cams
The cam lever is connected to the rod. The rod is connected to the
feeder or the placing head.
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CP IV-3 Maintenance
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Chapter 10 Cam Box
10.2.2The Index Cam
The index cam rotates the
12 placing heads. The
index cam rotation moves
the 12 cam followers
attached to the upper part
of the rotary head,
causing the placing heads
to move in increments of
360°/12 = 30°.
Fig. 10-3 Index Cam Operation
10.2.3The Cylinder Cam
The cylinder cam is used for
selecting the L,M,or S nozzle
that used in the nozzle change
operation at station 11. The
curvature of the cylinder cam
drives the cylinder which in
turn drives the shaft and the
connected lever. This lever
carries out the nozzle change
operation.
The cylinder cam is also used
for selecting the direction of
rotation for the PQ operation at
station 3. The curvature of the
cylinder cam drives a lever
which is connected to a shaft
which in turn drives the gear
used for carrying out PQ
rotation at station 3.
Fig. 10-4 Cylinder Cam Operation
CP IV-3 Maintenance