The Working of Automatic Rebar Tying Machine
Automatic rebar tying
machines have speeded up the process of tying rebars and improved the quality
of the knots. Rebar manual tying, being repetitive in nature, can cause injuries
to workers in the long run. We weigh in on the workings of the rebar tying
machine to help you understand how it can replace manual work and
offer greater productivity and safety to employees.
How
does it work?
Rebar, known as
reinforcing steel, is a steel bar or a mesh of steel wires used in reinforced concrete
and masonry structures. The rebars that
are placed in the form of a grid or matrix are tied together at various
connecting points. This helps in strengthening the concrete structure. The
rebar work is known as rod busting in the construction sector. And the workers
who perform the rod busting are called rod workers.
The
three different methods of rebar tying:
1.
Pliers – This is the conventional
method of rod tying. This relies on linesman pliers along with a diagonal
cutter and a wire spool. The pliers are mainly used to cut, hold and to twist
the wire. The wire spool is generally attached to the belt on the workers
waist. The worker pulls a length of wire from the spool, wraps it around the
rebar with the pliers, ties it together by twisting the two ends of the wire
and then cuts off the excess wire using the linesman pliers.
2.
Pigtail – The worker uses a
wire that is pre-cut and a twisting tool that looks like a pigtail. This tying
machine is generally used by non experienced rod workers on such sites that do
not require much tying.
3.
Rebar tying machine – Rebar tying machines
are battery operated tools that are placed at the intersection of rebar rods. At
the depression of a trigger, the tool automatically feeds the required wire
around the rebar rods, twists it and cuts it. This is done at great speed with
a firm wrap around the rebars.
As can be seen,
automatic rebar tying machines are, by far the best way to ensure that
reinforced structures have a firm grid of mesh in place.
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