Project Description

Automatic machine for the production of crimped wire, so as to manufacture either hand-made or machine-made hollow chains, in gold, platinum or silver.

On the right side of the machine there is an unwinding reel, where the skein of Ø 5 mm or Ø 8 mm round wire called the “core” is loaded. The “core” can be made of “tombak”, copper or iron. The “core” constitutes the internal part of the seamed/crimped product, which will be finally removed through the “emptying” process.

Through some dragging driving rollers this “core” is driven onto the wire-straightening unit, in order to make it perfectly linear. The milling unit is located immediately nearby: this unit, by means of cutter disc with hard-metal inserts, creates 2 channels (grooves) on the wire (core), which will be used for the subsequent crimping of the slab.

The milling unit is equipped with lubrication system. The processing waste of the milled wire is collected in a special tank.

At the same time, on the other side of the machine, the gold, platinum or silver plate is shaped through a train of wheels/rolls, so as to wrap it around the “core” profile, blocking it onto the 2 previously formed channels/grooves.

Always at the same time, depending on the need, it is possible to automatically insert 2 welding wires inside the two channels/grooves, which will be used in the end to weld the chain through another manufacturing process.

Finally, a pulley block / roll frame makes the profile square, keeping the line perfectly in its position so as to ensure that the product is not damaged during the subsequent “rolling” phase.

The final result is a perfectly compact crimped wire, between the gold / silver plate and the tombak / iron core; square shaped, with the possibility to have two welding wires inside it, ready for the subsequent manufacturing processes.

This crimping system has the advantage of carrying out the production of hollow wire, by simply inserting on the machine a wire called the “core” as well as the plate to be crimped, without any loss or waste of precious metal.

The machine is equipped with an LCD touch color control panel and a speed regulator, and it is already set up for INDUSTRY 4.0.

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Machinable dimensions and equipment

Wire (“core”) Ø 5 o Ø 8 mm in tombak, copper or iron
Sheet thickness 0,15 – 0,80 mm
Cutter unit 1
Profiling Heads 4
Welding sibility to insert 2 welding wires
Productivity 1 m/min

Technical features

Power 3,3 KW
Power supply 380 V – 50 Hz – 3 ph
Machine dimensions 240 x 80 x h.170 cm
Weight 550 Kg