LNS Sprint 545 S2, Instruction Manual

Page: 71 / 114

CHAPTER 7: GENERAL DESCRIPTION 7-17
SPRINT 545/565S2
10. 2-POSITION PNEUMATIC FRONT REST (option)
Please read the safety instructions provided at the beginning of this manual before
handling the following devices.
When working with a non-round bar, the automatic front rest is deactivated. To use a
rotating shell, a standard front rest must be installed.
10.1. Description
Located at the front of the bar feeder, the pneumatic front rest stabilises the bar guidance, even when
there is a lot of play in the guiding channel elements.
Formed of a robust chassis which houses 2 shells
(B) made from a synthetic material, the front rest is
supplied with hydraulic oil throughout the entire automatic cycle. At the front rest outlet, some of the
hydraulic oil which is on the bar is recovered using a centrifugal effect. A blast of air
(A) emitted just
before the bar feeder outlet dispenses with the remaining oil. The front rest opening is actuated by a
pneumatic cylinder
(C) and controlled by the PLC.
A cover
(not shown) protects the mechanism, while the oil recovery device (not shown) protects the
underneath of the assembly.
10.2. Layout of the elements
Designation Article No Description
A 023.31.104 2 Guiding shells
B 3.97040.B.50 Pneumatic actuator
C - Front rest opening adjustment
D - Retention of the guiding shells
10.3. Setting
The operating principle for the front rest is as follows:
1. Closed position: bar held in place and guided
2. Open position: pusher held in place and guided
Regardless of the diameter of the bar requiring guidance, guiding shells are invariably the same.
The open position of the front rest is adjusted manually using the setting screw
(E) .
A
B
D
C
D