Bar handling re-bar
Handling system, reinforced bars
The purpose of SUND BIRSTA Bar handling system is to receive bars from the cold
shear roller table and transport the bars to different stations within the bar
handling as:
- bar counting
- bar collecting
- wire binding of sub-bundles
- wire binding or strapping of master bundles
- unloading with weighing station
The Bar Handling System is automatically operated
but different parts in the system can be operated
manually.
Typical key-machines within the system are sub-bundle binding machines as the
KNS and KNE model.
There can be 3-6 of these machines depending on the number of wire bindings
required.
The KNSB, KNCA and KNDA model machines are used to bind master bundles.
Also integrated in the system can be a bar counter type BCA, which will become
the key machine of the system.
Bar handling
Bar handling systems for long products are in most cases custom made to suit the demands at every individual rolling mill.The key equipment in a bar mill will normally consist of the following :
Roller Conveyor after the cold shear
Gauge Beam
Designed to suit the products and mill lay-out.
Unloading Table from the cold shear roller table
The type of unloading system depends on the type of cold shear and mill
capacity.
Short Bar Ejection
Designed to remove the short bar(s) from the layer of bars.
Design parameter is customers request of shortest accepted bar length in the
bundle.
Bar Counter, type BCA
The bar counter is designed to count bars from 6 mm and upwards. Counting
accuracy approaches 100 %.
Sub-Binding Machines, type KNS or KNE
Mill capacity, number of wire bindings and method application, are the
parameters for machine type chosen.
KNS is all hydraulically driven using 2,6-5,5mm binding wire.
KNE is all electrically driven, using 2-2,6mm binding wire.
Master-Binding Machines, KNSB or KNCA
Number of bundles per hour, bundle weight and size as well as number of wire
bindings per bundle determine the type and number of machines.
Weighing and Tag Marking
This equipment is integrated into the system and will normally weigh the bundle
prior to the unloading station.
Unloading Station
Unloading of finished bundles determined by the design of the intermediate
bundle storage.
Lifting Beam
Lifting of bundles, alternative with magnets or sling chains
Electrical Control System and Tracking
The complete handling process from bar cutting at the cold shear up to the
unloading station for finished bundles, is fully automatic controlled by means
of PLC control system.
Hydraulic System
All the movements in the system are hydraulic operated and fed from a central
hydraulic unit.
Sund Birsta
The number of operators for works supervision depends on plant size and
complexity.
Handling system for Bar in coil, (Garret coil) described in chapter Rod mill.