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219283
FESTO
PNEUMAl-lC
Ad&de Athw
Celle Delft Dublfr Duncanv~lle
Ka~ro Karlskrona Kobenhavn Ku& Lumper
Nagoya-City Nantes
Jarxwo Roma San
Auckland Barcelona Bangkok
Durban
Oslo
Jose
Padova Paws
Sao Paula Sarreguemmes Seoul
Eibar Elndhoven F~renze Fukurol Goteborg Graz
Leeds
Perth
Bela Hor~zonte Blmxngham
L~lle Lima Ltsboa Locamo
Port
Elizabeth
Singapore
So&
London Lyon Madrid
For short strokes and fast working cycles, e.g. on
high-speed presses in mass production in the precision, electrical, and watchmaking industries.
Feed units can be used to push in front of the tool or
to pull behind the tool, operating from right to left
in each case. Proper functioning is ensured in each
mounting position.
Bologna Bordeaux
Guadalajara
Port0 Port Washtngton Porte Alegre Praha Pretoria Puerto RICO QUIIO FiexdalefO,&wo RIO
Stockholm Sydney
Brisbane Bwxelles
Hels!nkl
Hong Kong
Malmo Manila
Tapped
Teheran Tokyo
Budapest Buenos
Istanbul
Jakarta
Melbourne
Valenc~a Warszawa Wren Yverdon Zurich
Acres Campmas
Jo~nv~lle
Mwco City M~lano Monterrey
Cape Town
Johannesburg
Operating Instructions
for pneumatic feed units
type
BV-50-
marking groove on the clamping gripper indicates the
centre of the clamping plate. The guide rollers (1)
are provided for lateral guidance and must be set to
the appropriate strip width. Make sure that they run
freely. With open clamping grippers, it is possible to
transport material which exceeds the width of the
feed unit.
40, BV-50-100
de
The housing of the feed unit has 4 fastening holes (10)
and is attached on the press table with socket head
cap screws to the tool or to an attachment angle. It
is advisable to attach the unit such that it can be vertically adjusted in order that the strip entry can at all
times be adjusted to the tool.
Material adjustment
With strips less than 30 mm wide, it must be ensured
that the strip is guided over the centre of the clamping piston (18) and is aligned with the tool centre. A
Feed setting
Slacken clamping screws
(8),
turn set screw (4) until
the distance between stop (5) and feed brace corre-
sponds to the desired feed length. Retighten clamp-
ing screws.
Insert strip
Close hand slide valve (Figs. 1 and 2, item
22),
the
unit is now exhausted - insert strip - reopen hand
slide valve.
If strip or tape material is to be inserted against the
length stop, it is advisable to incorporate a further
hand slide valve into line P 1 for exhausting the grippers (Figs.
1
and 2, item 25).
Item Name
1:
;A
I
Guide roller
Stroke setting
Buffer plate
2
Fastening screw
:
Clamping screw for stroke setting
Guide column
Fastening hole
Lubrication nipple
Clamping piston, replaceable
Centre
Y
marking
Page 2
To obtain the optimum cycling frequency, the control
line between valves 20 and 21 should not exceed
two metres in the pneumatic control (Fig. I). The
control signal for valve 20 can be obtained linearly or
rotary as required. With linear pick-up, an adjustable
control rail must be mounted on the press ram. With
press strokes over 15 mm, only rotary signal pick-up
is possible.
In general, the rotary type of signal pick-up is to be
preferred. This usually allows one to avoid resetting
of the control rail if tools are changed.
With both types of control, the timing of the pulse
output for the feed should be selected such that the
rams have wiped off and the tape is freely located in
the tool. The feed should be completed no later than
30’
after upper dead centre.
Example:
Pneumatic control
The solenoid valve (Fig. 2. item 20) obtains its reversal
pulse from an electrical limit switch.
Reverse control (if feed unit is to operate in the
opposing direction)
Reversal of the feed direction and opposite starting position of the slide: interchange connections
C and D.
Reversal of feed direction with same starting position of the slide: interchange connections A and B.
Reversed starting position of the slide with same
feed direction: interchange connections A and B
and also C and D on the feed unit housing.
The grippers can be shifted through
180°
such that the
opening is on the opposite side. To do this, the
socket head cap screws (7, front side) must be
slackened.
Electra-pneumatic
control
Conirol elements
En-5&40
Item
2u
21
22
23
24
25
1
26
Name
Air-operated valve
solenoid valve
Roller lever valve
Hand slide valve
SewIce
unit
Solenoid valve
Hand
slide
valve
Pressure regulator
Pneumatfc
control
VL-a-‘/a -6
R-3-)/,
MOC-3-114
w-3-1/,
L&‘#‘,
(100)
Electra-pneum.
MLC-0-% -9
w-311,
FRC-‘/a
(only requred
intermedIate
(only
with strip or
tape
material aqalnst
lenglh
stop)
(only
wth low
press”re for
control
with
exhaust)
-
feed)
Tools with catch pins
Where cycling rate and ram stroke permit, it is possible to momentarily exhaust the holding grippers
with tools having catch pins (locating pin, pilots). A
solenoid valve type
MOC-3-‘/4
(24) fitted in line B
and operated by means of a cam disc and a limit
switch exhausts the holding gripper as soon as the
catch pin is inserted in order that the strip can be
centered.
Ouantlty
Item Name
27
Distributor pieca
26
1
Quick
29
Socket
301Duck
31 1
Quick
Quick
FR-4-‘/<
connector
joint
connector
connector 1
connector
QM-‘I,-‘/,
1
CK-‘/*-PK.6
CK-“8-PK-4
U-‘/d
1
TCK-’ d-PK-6
Pneum. Electra-pneum.
COfltWl
1
i -
I3
]
CK-‘4.PK-4
3
2 2
control
1
1
4 ’ 4
1
1
2
3
I
LL
A service unit type FRC must befitted on the upstream
side of the entire control system. With this unit, the
compressed air is cleaned, regulated to constant
pressure (6 bar), and provided with a fine oil mist
lubricating purposes. The bearing bushes of the feed
brace must be lubricated from time to time by means
of lubricating nipple (II).
for
Page 3
Diagram showing approximate values for max. working
cycies/min
at 6 bar working and control pressure
TYPO
Material width max.
Feed (infinitely
Material thickness max.
Feed force at 6 bar
Clamping
I
I c
1
Pressure
Weight
1N -0Jkp
fOrCe
onnection
ranoe
variable)
at 6 bar
rnnl
mm 0 to 40
mm
N
N
bar
kg
BV-51S.40
50
1.0
1
R
‘#‘a
I
1
3to6
3.7
I
R
‘1~
I
3 to 6
1
Permissible cross-section diagram
Values for properly flattened material with non-driven
reel up to 60
cycles/min.
To achieve these values, a
driven reel must be used at higher cycling rates.
t
0,2 0,4 0,6 0,8 1,O
Material
thickness [mm]
450
400
.;
350
>
I
;
I
300
2
c
250
‘2
k
200
3
150
’
loo**
The attainable working
10
o
20 30 40 50
Stroke
brn]
cycles/min
70
60
depend on many
factors, mostly stroke and load. In the diagram, the
upper range for each type represents the attainable
cycling frequency at low load, and the lower range
represents the attainable cycling frequency at high
load.
To attain the upper limit, time-leading control is ad-
visable.
A fitted advance movement cushioning arrangement
allows optimum balancing of stroke, cycle rate, and
mass.
80
90
Pneumatic feed unit type BV-50-40, BV-50-100 (deviating dimensions in parentheses)
Supply
line
movement
dIrectIon
1ller,
Y
I(
be
tipped
Supply hrle
Feed
gripper
Supply lhne
Gwde
for
I”
B
up
roller
‘“OVe”Tent
Fastentng
for
I”
directIon
A
hole
,y
Plug screw
relocated
Supply hne for
,eed gr,pper
Feed brace
can be
throuoh 160:
”
Adjustable advance
movement
ClampIng piston
replaceable
holdfng grIpper
cushic
Clamping screw for
stroke
for
relocated through
- 31,s
setting
Holding grIpper
Protective
F
,
can be
16OJ
cover
clamping
The information given is liable to modification without
notice
Page 4
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