摘要:
A conveyor device (100) for conveying a single face corrugated web (NS) on a bridge (41) is disclosed. The conveyor device comprises a lower guide roller (111), around which the single face corrugated web (NS) is guided. The conveyor device (100) further comprises an upper pinching and conveyance nip (119) formed by a pair (113) of nip members (115, 117, 118, 120) in pressure contact with one another. At least one of said nip members is motor-driven. The pinching and conveyance nip (119) is configured to pull the single face corrugated web (NS) upwards from the lower guide roller (111).
摘要:
The sheet stacker (1) comprises a sheet conveyor arrangement (3), configured for feeding a plurality of sheets (C) in succession in a sheet feeding direction (F), said sheet conveyor arrangement having a sheet discharge end (17). The sheet stacker further comprises a stacking bay (5), wherein sheets delivered by the sheet conveyor arrangement at the sheet discharge end thereof are formed into stacks (S). The stacking bay (5) comprises a stacker platform (19). The stacker platform (19) supports a stack conveyor (25) movable in a direction parallel to a feed direction (F) of the sheets (C) in the stacking bay (5), configured and controlled to perform a reciprocating staggering motion to form staggered bundles (B) of sheets, and to further perform an evacuation motion (fE), to remove a completed stack (S) from the stacking bay (5).
摘要:
A sheet stacker (1) comprises sheet conveyor arrangement (3) and a stacking bay (5), wherein sheets delivered by the sheet conveyor arrangement (3) are formed into stacks; the stacking bay comprising a stacker platform (19). The stacker platform (19) is provided with a vertical lifting and lowering movement with respect to a stationary supporting structure and is controlled to move downwards while a stack of sheets is formed thereon. The stacker platform (19) supports a stack conveyor (25) configured and controlled to perform at least an evacuation motion, to remove a completed stack from the stacking bay (5). The evacuation motion of the stack conveyor (25) is oriented such that a completed stack is moved from the stacking bay (5) onto an evacuation conveyor (53) arranged under the sheet conveyor arrangement (3).
摘要:
An unwinder (1) of rolls (B1, B2) comprising a bearing structure (3) and two pairs of arms (11A, 11B; 13A, 13B) supported movable on the bearing structure (3). The unwinder further comprises a splicing machine (31). The bearing structure (3) comprises a base (5) and an upright (7) extending from the base, on which a cross member (33) is supported. The cross member (33) comprises an intermediate portion (33A) rigidly bound to the upright (7) and a pair of lateral supports (33B, 33C) adapted to assume at least one operating position and one non-operating position, with respect to the intermediate portion (33A) of the cross member (33).
摘要:
The splicing device (7) for splicing a trailing edge of a first web material (N1) to a leading edge of a second web material (N2) comprises members (41, 43) defining a feed path of the web material (N1, N2). The device also comprises a first cutting member (59) and a second cutting member (61), cooperating with the first cutting member. One of the two cutting members (59,61) is provided with a movement transverse to the feed path of the web material, to move the cutting member (61) from an operating position, in which it is in front of the other cutting member (59), to an idle position, withdrawn with respect to the feed path of the web material.
摘要:
The sheet stacker (1) comprises a sheet conveyor arrangement (3), configured for feeding a plurality of sheets (C) in succession in a sheet feeding direction (F), said sheet conveyor arrangement having a sheet discharge end (17). The sheet stacker further comprises a stacking bay (5), wherein sheets delivered by the sheet conveyor arrangement at the sheet discharge end thereof are formed into stacks (S). The stacking bay (5) comprises a stacker platform (19). The stacker platform (19) supports a stack surface (25) movable in a direction parallel to a feeding direction (F) of the sheets (C) in the stacking bay (5), configured and controlled to perform a reciprocating staggering motion to form staggered bundles (B) of sheets. The pitch (P) of the staggering motion is set as a function of at least one production parameter, such as the length of the sheets in the staggering direction.
摘要:
The sheet stacker (1) comprises a sheet conveyor arrangement (3), configured for feeding a plurality of sheets (C) in succession in a sheet feeding direction (F), said sheet conveyor arrangement having a sheet discharge end (17). The sheet stacker further comprises a stacking bay (5), wherein sheets delivered by the sheet conveyor arrangement at the sheet discharge end thereof are formed into stacks (S). The stacking bay (5) comprises a stacker platform (19). The stacker platform (19) supports a stack conveyor (25) movable in a direction parallel to a feed direction (F) of the sheets (C) in the stacking bay (5), configured and controlled to perform a reciprocating staggering motion to form staggered bundles (B) of sheets, and to further perform an evacuation motion (fE), to remove a completed stack (S) from the stacking bay (5).
摘要:
The hot plate (11) comprises an upper plate (61) joined to a lower plate (63) along respective sides parallel to each other. A heat transfer fluid circulation chamber (65) is defined between the upper plate (61) and the lower plate (63), with at least a first inlet (83) of the heat transfer fluid and at least a first outlet (87) of the heat transfer fluid. The lower plate (63) has two downwardly bent edges (63.2), extending along the sides of the upper plate joined to the lower plate. Stiffening ribs (79) are joined to the lower plate (63), along the heat transfer fluid circulation chamber, and to the downwardly folded edges (63.2s) of the lower plate (63).
摘要:
The sheet stacker (1) comprises a sheet conveyor arrangement (3), configured for feeding a plurality of sheets (C) and having a sheet discharge end (17), and a stacking bay (5). In the stacking bay sheets (C) delivered by the sheet conveyor arrangement (3) are formed into stacks (S). A stack conveyor (19) is provided in the stacking bay (5) and is movable in a conveyor direction (fl9) parallel to a sheet feeding direction (F), according to which the sheets (F) are fed from the sheet discharge end (17) onto the stack conveyor (19). The sheet discharge end (17) is configured and controlled such that it is gradually lifted during sheet stacking, in order to accommodate a growing stack (S) of sheets (C) being formed on the stack conveyor (19). A stop plate (37) is positioned in the stacking bay (5) above the stack conveyor (19) and in front of the sheet discharge end (17) of the sheet conveyor arrangement (3). The stop plate (37) is configured and controlled to be gradually lifted from the stack conveyor (19) as the sheet stack (S) grows, to be withdrawn upon completion of the stack (S) thus allowing removal of the stack in an evacuation direction (fE) substantially parallel to the conveyor direction (fl9), and to be lowered towards the stack conveyor (19) again.