Tecnau S.r.l.

Alberto Massucco

Giuliano De Marco

Armando Aprato

Francesco Terrusi

Francesco Modica

Franco Terrusi

De Marco

An equipment of accumulation of sheets forms a stack of sheets on an accumulation plane by means of driving belts and diverters arranged along the path of the sheets and jump on the accumulation plane. The height of the jump is modified by shifting vertically the accumulation plane with respect to the diverters according to number and/or thickness of the sheets. The diverters can be shifted according to the length of the sheets to be accumulated, while a series of arrest lugs delimits at the rear the area of collection of the sheets and a forwarding mechanism with a pair of output rollers forwards the stack of accumulated sheets when the lugs are released.

Sheet accumulation equipment

A transversal cutting equipment for sheets separable from overlapped continuous forms, wherein the forms are longitudinally divided from a basic continuous form for producing documents with a single sheet or more sheets, and wherein the documents and the respective sheets are printed according to a predetermined order. The equipment comprises a cutting device for joined separation of the sheets; an accumulating and forwarding device; transport paths; and differentiating means for modifying the transport times of the sheets along one or more transport paths. The cutting device operates in a continuous way, while the accumulating and forwarding device collects the sheet or sheets of a partially formed document and sends the sheet or sheets upon the completion of the document. The differentiating means modifies the transport times without interrupting the cutting device so that a cut sheet of a following document, is transferred to the accumulating and forwarding device for the formation of the following document, substantially after the forwarding of the preceding document.

Transversal cutting equipment for sheets separable from overlapped continuous forms

An equipment for transferring sheets with change of direction for sheets entering along a first direction comprises output rollers to move the sheets along a second direction, right-angled with respect to the first direction, and members of engagement and movement, actuatable for engaging and moving the sheets entering along the first direction along the second direction up to the engagement with the output rollers. The members of engagement and movement provide a condition of reception in which define a space of reception for the entering sheets and a condition of engagement and movement in which engage the entered sheets and move the sheets for the engagement with the output rollers. The members of engagement and movement return to the condition of reception upon the engagement of the entered sheet with the output rollers for enabling a following sheet&#x2014;to enter and to be moved along the first direction jointly with the movement of the previous entered sheet along the second direction.

Equipment for transferring sheets with change of direction

A punching and/or perforation equipment () for continuous paper forms () comprising punching and/or perforation member () and contrast elements () substantially tangent to the movement surface () of the forms and a punching and/or perforation mechanism () for driving the punching and/or perforation members. A detecting device () detects at least one reference position the forms associated with the punching and/or perforation positions and a servomechanism () actuates the punching and/or perforation mechanism on the basis of the reference position or positions between a state of rest and a state of punching and/or perforation and in which the reference position or positions are associated with information of a position encoder (). The punching and/or the perforation members cooperate with the form with a peripheral velocity, at the moment of the punching and/or perforation, substantially equal to the velocity of the moving form ().

Punching and/or perforating equipment for continuous forms

A cutting equipment () for continuous forms () comprising an input moving device () for a continuous form, a loop forming device (), a cutting feeding device () and a transversal cutting mechanism () for the form. The form () has side sprocket holes () and the cutting feeding device () includes intermediate pin feed tractors () interposed between the loop forming device () and the transversal cutting mechanism () and provided for cooperating with the sprocket holes of the section of form () to be cut. The loop forming device includes a loop sensor () and the input moving device () causes the form to be entered at a mean velocity depending on the velocity of the intermediate pin feed tractors () and on the state of the loop sensor.

Cutting equipment for continuous form

A dynamic sequencer ( ) for sheets printed two-up and slalom on continuous forms comprising an input section ( ) for two sheets ( - and - ) in a plane flanking relationship with respect to a longitudinal axis ( ) and a collecting station ( ) for the superposed sheets. Overlapping device ( ) moves the sheets from the input section ( ) to the collecting station ( ) along two respective trajectories ( ) maintaining a constant transversal trim. The trajectories ( ) include divergent portions ( ) divergent in height from the input section, approaching portions ( ) approaching the sheets toward the longitudinal axis ( ) and concurrent portions ( ) concurrent in height toward the collecting station ( ).

Growing community of inventors

Ivrea, Italy

Alberto Massucco