Abstract: The corrugating roller (7; 9) for machines to produce corrugated cardboard, comprises: a hollow cylindrical body (7B; 9B), with an outer (7D; 9D) surface provided with corrugations (7C; 9C); a circuit for a heat-carrying fluid; and a pair of necks (7E, 7F; 9E, 9F), through at least a first (7E; 9E) of which said heat-carrying fluid is supplied. The body (7B) and the necks (7E, 7F) are produced in a single block machined by removal.

Abstract: A rotating cutting cylinder and an opposing member, wherein the cutting cylinder is fitted with a plurality of blade segments distributed along the length of the cutting cylinder and connected to one or more actuators for producing a movement of selective extension and retraction of said blade segments with respect to said cutting cylinder.

Abstract: The splicing device comprises two heads (41A, 43A; 41B, 43B), each of which has: a roller (33A; 33B) associated with a clamping bar (93A; 93B) to hold between said roller and said clamping bar an initial edge (L) of the second web material; a counter-pressure member (53A; 53B) cooperating with said roller to press said first and second web materials against each other; and a cutting member (67A; 67B).

Abstract: A rotating cutting cylinder and an opposing member, wherein the cutting cylinder is fitted with a plurality of blade segments distributed along the length of the cutting cylinder and connected to one or more actuators for producing a movement of selective extension and retraction of said blade segments with respect to said cutting cylinder.

Abstract: The device comprises a plurality of lengthwise cutting tools (25; 25B), a transverse trimmer (100) and, downstream of said lengthwise cutting tools, at least two separate paths (PA, PB) for the strips cut from the weblike material. An auxiliary lengthwise cutting tool (51) is provided to generate, on the occasion of a job change, an auxiliary lengthwise cut in a transition zone (J0) to join central cutting lines of two successive jobs. (FIG.

Abstract: A rotating cutting cylinder and an opposing member, wherein the cutting cylinder is fitted with a plurality of blade segments distributed along the length of the cutting cylinder and connected to one or more actuators for producing a movement of selective extension and retraction of said blade segments with respect to said cutting cylinder.

Abstract: The apparatus for cutting a weblike material (N) fed continuously along a path (P) through said apparatus comprises a rotating cutting cylinder (101) and an opposing member (105), these being arranged on opposite sides of said path (P). On the cutting cylinder are a plurality of blade segments (111) distributed along the length of the cutting cylinder and connected to actuators (119, 121) for producing a movement of selective extension and retraction of the blade segments (111) with respect to the cutting cylinder (101).

Abstract: The device comprises a plurality of lengthwise cutting tools (25; 25B), a transverse trimmer (100) and, downstream of said lengthwise cutting tools, at least two separate paths (PA, PB) for the strips cut from the weblike material. An auxiliary lengthwise cutting tool (51) is provided to generate, on the occasion of a job change, an auxiliary lengthwise cut in a transition zone (J0) to join central cutting lines of two successive jobs. (FIG.

Abstract: The device comprises at least one circular slitting tool (25; 25B) with an axis of rotation located on one side of the path of the web, which works in conjunction with an edge (68; 68B) that supports the web (N) and that is situated on the opposite side of said path (P) from the tool axis and essentially perpendicular to the direction of forward travel (F) of the web and over which said web (N) travels during its advance.

Abstract: A method is described for changing between jobs in a device for slitting a web (N) into a plurality of lengthwise strips (L1, L3, L5, L1', L3', L5') with two series of slitting tools (25, 25B). At the moment of the job changeover, the tools of a first series are moved from a slitting position to an inactive position and the tools of the second series are moved from an inactive position to a slitting position. The passage from one position to the other is delayed for one of the tools of each series in order to generate two slit lines (L3', L5) extending into the job changeover zone (CA), and these lines are subsequently joined up by a transverse slit (L9). (FIG.

Abstract: A system is described for cutting and creasing an indefinite weblike material (N) comprising: a first set of creasing tools (15); a second set of creasing tools (17); a first set of cutting tools (31); a second set of cutting tools (33); positioning means (27) for positioning cutting and creasing tools; and first auxiliary cutting members (63) for making cuts not parallel with the direction of advance of the weblike material for the trims (R) along the edges of the weblike material when the change of job occurs. The first auxiliary cutting members (63) make a joining cut (4, 6) between the cut lines (1, 3) defining the trims (R) of one job and the cut lines (1', 3') defining the trims (R') of the next job, without severing the trims (R, R') transversely where the change of job occurs.

Abstract: The machine includes: a plurality of conveyors (3, 5, 7, 9, 13, 15) for sheets (F) of flat material to be stacked to form stacks or bundles (P); apparatus (6) for partially superimposing the sheets on each other; a surface (19) for the collection and stacking of the sheets; and removal apparatus (21, 23) for removing the stacks (P), the apparatus moving the stacks (P) in a direction substantially parallel to the direction of advance of the conveyors (3, 5, 7, 9, 13, 15). The stacking surface (19) is associated with a stop gate (33) movable in the direction of removal of the stacks and provided with a withdrawal movement to permit the discharge of the stacks (P) which are formed.

Abstract: An automatic storage and stacking device for sheets of laminar material, such as corrugated cardboard or the like, comprises a transportation unit which removes the sheets of laminar material from a cutting group, overlaps them and conveys them towards a storage surface. The transportation unit comprises a plurality of conveyors in series which can be operated at varying speeds so as to allow separation of a first series of sheets from a successive second series of sheets; with one of said conveyors there is associated a retaining means for holding the rear portion of the first sheet of said second series, which retaining means comprises a gripper member able to perform an alternating movement along the conveyor with which said gripper member is associated.

Abstract: An automatic storage and stacking device for sheets of laminar material, such as corrugated cardboard or the like, comprises a transportation unit which removes the sheets of laminar material from a cutting group, overlaps them and conveys them towards a storage surface. The transportation unit comprises a plurality of conveyors in series which can be operated at varying speeds so as to allow separation of a first series of sheets from a successive second series of sheets; with one of said conveyors there is associated a retainer for holding the rear portion of the first sheet of said second series, which retainer comprises a gripper member able to perform an alternating movement along the conveyor with which the gripper member is associated.

Abstract: The present invention describes an apparatus for creasing and cutting an endless web of cardboard. A pair of rollers operates on the web while another pair of rollers is in an inactive position where the tools mounted on the rollers can be moved to new positions. When it is time for different operations to be performed on the web the original rollers working on the web are removed from their working position and the rollers previously in the inactive position are moved to the working position. The rollers now in the working position have had their tools aligned for the new operation while they were in the inactive position. The rollers originally in the working position are now in an inactive position where the tools on these rollers can be aligned for another operation. Each pair of rollers is independently driven to spin independent of the position of the roller.

Abstract: The present invention describes an apparatus for creasing and cutting an endless web of cardboard. A pair of rollers operates on the web while another pair of rollers is in an inactive position where the tools mounted on the rollers can be moved to new positions. When it is time for different operations to be performed on the web the original rollers working on the web are removed from their working position and the rollers previously in the inactive position are moved to the working position. The rollers now in the working position have had their tools aligned for the new operation while they were in the inactive position. The rollers originally in the working position are now in an inactive position where the tools on these rollers can be aligned for another operation. Each pair of rollers is independently driven to spin independent of the position of the roller.