The present invention relates to an advance shaft transition apparatus for sheet processing equipment, which comprising: a plurality of advance shafts for feeding foils, the plurality of advance shafts being arranged along a horizontal direction; an advance shaft supporting frame, the advance shaft supporting frame supporting the ends of the advance shafts so that the advance shafts can freely rotate; and a lifting means, the lifting means is provided with a driving means and a transmission mechanism, the lifting means is connected to the advance shaft supporting frame to enable the advance shafts to move between a first position and a second position, at the first position, the advance shafts is operably rotated to feed the foil, and at the second position, the advance shafts being lifted up from the first position to leave a position where the foil can be fed.

An inner-circulating high speed hydraulic system, a hydraulic platform and a hydraulic platform assembly consisting of said systems, wherein the inner-circulating high speed hydraulic system comprises a hydraulic cylinder component and a pressure valve component, the hydraulic cylinder component including a high pressure cylinder, a hydraulic plunger, and a housing, wherein an axial hole and radial holes intersecting with the axial hole are disposed at the top/bottom of the high pressure cylinder and the high pressure cylinder is contained within the housing, wherein the inner-circulating oil chamber may communicate with the axial hole via the radial holes and further communicate with chambers at the top/bottom of the hydraulic plunger, wherein compressed air inlets are disposed on the housing and a lower end of the hydraulic plunger is connected to an actuating element; and a pressure valve component, comprising a pressure servo motor and a pressure plunger driven by the pressure servo motor to move up and down within the axial hole disposed at the top/bottom of the high pressure cylinder. Accurate control on dwell time for pressing at the up and down stop points of the platform, and highly precise adjustment to duration of the dwell time are enabled by the present invention. Thus, a stamping process with high quality is achieved.

A thermal transfer printing machine with stationary support elements for supporting an article and a thermal transfer assembly vertically movable above the support elements, between a raised rest position and a lowered working position is disclosed. The machine has a surface heated transfer pad, supply and guide devices, a flexible printing ribbon which carries thermally transferable ink images, a position sensor providing electrical signals indicative of the vertical position of the transfer pad and a control unit with a learning phase, said control unit causes a descent run of the thermal transfer assembly, until the transfer pad engages with an article of a predetermined type. The position sensor detects and stores reference data characterizing descent run and the control unit initiates a subsequent descent run towards an article of the same type, comparing the reference data to the current descent run data, and stopping printing when an anomaly is discovered.

The present invention relates to an advance shaft transition apparatus for sheet processing equipment, which comprising: a plurality of advance shafts for feeding foils, the plurality of advance shafts being arranged along a horizontal direction; an advance shaft supporting frame, the advance shaft supporting frame supporting the ends of the advance shafts so that the advance shafts can freely rotate; and a lifting means, the lifting means is provided with a driving means and a transmission mechanism, the lifting means is connected to the advance shaft supporting frame to enable the advance shafts to move between a first position and a second position, at the first position, the advance shafts is operably rotated to feed the foil, and at the second position, the advance shafts being lifted up from the first position to leave a position where the foil can be fed.

The machine (1) comprises: a stationary frame structure (2), wherein support elements (8-12) are provided for supporting an article (A) on which an image (I) is to be printed; a thermal transfer assembly (20) which is vertically movable relative to the frame structure (2), above the support elements (8-12), between a raised rest position and a lowered working position, and includes a transfer pad (21) having an active surface (21a) which is heated in operation; and supply and guide devices (23-36) arranged to advance, along a predetermined path extending in part between the active surface (21a) of the transfer pad (21) and the support elements (8-12), a flexible printing ribbon (N) which on a side thereof carries, at predetermined intervals, images (I) formed of a thermally transferable ink. The machine (1) further comprises a position sensor (80) arranged to provide electrical signals indicative of the vertical position of the transfer pad (21), and a control unit (14) arranged to carry out a learning phase wherein the control unit (14) causes a descent run of the thermal transfer assembly (20), until the transfer pad (21) is brought into engagement with an article (A) of a predetermined type positioned on the support elements (8-12), and through the position sensor (80) detects and then stores reference data characterizing such descent run, and a subsequent printing phase, wherein the control unit (14) causes a subsequent descent run of the thermal transfer assembly (20) towards and up to an article (A) of the same type positioned on the support elements (8-12), detecting and comparing with said reference data the corresponding data that characterize the current descent run, and stopping the printing phase when the comparison between these data is indicative of an anomaly in the current descent run.