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Litostroj Ravne Ltd: Mechanical and hydraulic presses and press line equipment.
Presses for transfers and transfer dies
Presses for transfers and transfer dies (tools) are used for production of medium size sheet metal (semi)products. The technological requirements for part production are mainly assigned “by the part itself” and transfer dies mounted in the press.
Slide of the specific press for transfers and transfer dies can also be made out of cells welded together into one reinforced slide. Each of the cells (number of cells is equal to number of transfer dies) can provide required technological adjustments specific to each of the transfer dies needed for part production.
Presses for transfers and transfer dies are designed to be very stabile and firm. The slide is well adjusted, guided on 8 points, reinforced and balanced to give extra stability and support to the transfer dies installed. With that the straightness and vertical parallelism is achieved. All conditions for producing even the most challenging parts are obtained.
Presses for transfers and transfer dies are sometimes additionally equipped with decoiler, and feeder, in order to loose inner tension of the coil being used, when that is important, straightener can be added between decoiler and feeder into the production line.
Press with mounted transfer tools is fed with separated sheet metal blanks that can be produced separately from the production line or with blanking device constructed as a part of the press. This way feeding the press from coil is possible.
TRANSFER DIE METHOD AND PRODUCTION
The method of production with transfer dies (tools) is based on production of the part being progressively deformed in separate transfer dies mounted in one press. Throughout this process the part is transported from die to die with a transferring device called transfer. Transfer die production method and production process is similar to production method used in presses with progressive die with exception, that in presses mounted with transfer dies, the part is separated from the coil at begining of (semi)part deformation. Part is transferred from die the die with transfer, being controllably deformed step by step by many dies. Throughout this process the transferred blank is step by step becoming the part being produced.
