Embossing machine
AssigneeMaschinenfabrik Gietz AG
InventorsHanspeter Gietz, Manfred Rosli, Heinz Banziger
Life of this patent
Estimating the term…
Abstract
The embossing or blocking and punching machine with a machine control (2) has several pressure sensors (S1 to S4) for measuring compressive forces X arranged around the center Z of the blocking surface F. A positioning device (10) with a displacement drive (20) and associated motor control (21) is connected to a pressure control program (30) with compressive force control functions (REG), with which is associated a control and display unit (40). Thus, a precise, automatic constant control of the optimum operating pressure (XA) can take place and a constant, maximum embossing or printing quality is achieved.
Claims11
An embossing and printing machine for embossing sheets comprising the combination of
- a press top (3) having a die block (9), a block plate (4), means for heating said block plate (4) and said block plate having a blocking surface (F) supporting blocks (8);
- a mechanical positioning device (10) comprising a displacement drive for adjusting vertical positioning of said die block;
- a press bottom (19) comprising a mechanical toggle press (17) carrying a make-ready plate and a make-ready (15) for supporting sheets during embossing, said toggle press being operative to lift said press bottom a predetermined distance to said press top;
- a plurality of pressure sensors mounted around a center (Z) of said blocking surface (F) for sensing compressive forces (X) acting on said blocking surface and for producing outputs representative of said forces;
- and
- a machine control (2) including
- a motor control (21) for controlling operation of said positioning device,
- a pressure control (30) connected to receive outputs from said plurality of sensors for adjusting operating pressure to a predetermined optimum operating value (XA) by adjusting said positioning device to compensate for variations in displacement values (YO) due to compression of said make-ready (15) and heating during an embossing process, thereby precisely controlling pressure applied during embossing, and
- a display and control unit (40) for displaying operation of said machine control and for permitting manual operation thereof.
Dependencies are inferred from the claim text.