摘要:
The sheet transporting device of the invention includes: a transferring device (64) adapted to transfer a sheet (30), a conveying device (66; 66A) for conveying a sheet transferred from the transferring device (64) onto the conveying device, and a controlling means (76) adapted to control the speed of the conveying device (66; 66A) and defining a transfer cycle (CT). The controlling means (76) is adapted to slow down the conveying device (66) when a sheet is conveyed by the related conveying device and to accelerate the conveying device when no sheet is present on said conveying device. The invention can be used for the cutting devices of rotary printing machines.
摘要:
A folding device including a folding member, and at least one first belt adapted to act in a forwarding plane on a product to be folded in order to position it opposite the folding member, the device including a movement device for moving the or each first belt relative to the forwarding plane between a first position, in which the first belt exerts a first pressure on the product to be folded, and a second position, in which the first belt exerts a second pressure on the product to be folded that is lower than the first pressure.The movement device is adapted to make the belt alternate between the first and second positions.
摘要:
This table for a chopper folding device comprises a surface (20) for application of products to be folded (17), the application surface (20) extending along an application plane (PA), a folding opening (22) suitable for the passage of the products to be folded (17), at least one first guide portion (28) disposed adjacent to the folding opening (22) and comprising a first guide surface (32) inclined with respect to application plane.The table (12) comprises guiding means suitable for urging the product to be folded towards the first guide surface (32) and a first main suction hole (36) which opens on the first guide surface (32).Application to folders of rotary presses.
摘要:
A folding device capable of folding signatures and includes a blade cylinder, which is provided with at least one blade; a counter-pressure cylinder, which is provided with at least two counter-pressure elements which together define an axial gap; and a conveying element which is capable of conveying a signature, and which extends in the axial gap. The blade extends over the axial gap and the conveying element extends in the axial gap with spacing from the blade when the blade co-operates with the counter-pressure elements.
摘要:
A folding apparatus (1) in a web-fed rotary printing press for folding signatures (2) which are cut off from a running web of material (6) by a cutting device (40) and carried on a signature transport surface (10) of a folding blade cylinder with the aid of at least one rotating band-shaped conveying element (12, 22, 36, 38) has the feature that the cutting device (4) includes a cutting blade (14) arranged on the folding blade cylinder (8) as well as a rotating anvil element (16) which interacts with the cutting blade; the band-shaped conveying element (12, 22, 36, 38) being passed around the rotating anvil element (16) in such a manner that the band-shaped conveying element acts as a supporting element for the cutting blade (14) during the cutting of the signatures (2).
摘要:
A substrate sheet transporting device is provided. The device includes a first transfer cylinder defining a first axis, a circumferential direction and a transverse direction and a transfer belt (74) extending around the first transfer cylinder. The first transfer cylinder includes first openings for the passage of a gas and the transfer belt includes second openings for the passage of a gas. The transfer belt and the first transfer cylinder define an alignment position in which the second passage openings are aligned with the first passage openings. The transfer device includes a device for adjusting the position of the transfer belt relative to the first transfer cylinder by bringing the transfer belt toward the alignment position. The invention is applicable to cutting devices of rotary printing presses.
摘要:
A folding apparatus (1) in a web-fed rotary printing press for folding signatures (2) which are cut off from a running web of material (6) by a cutting device (40) and carried on a signature transport surface (10) of a folding blade cylinder with the aid of at least one rotating band-shaped conveying element (12, 22, 36, 38) has the feature that the cutting device (4) includes a cutting blade (14) arranged on the folding blade cylinder (8) as well as a rotating anvil element (16) which interacts with the cutting blade; the band-shaped conveying element (12, 22, 36, 38) being passed around the rotating anvil element (16) in such a manner that the band-shaped conveying element acts as a supporting element for the cutting blade (14) during the cutting of the signatures (2).
摘要:
A folding device capable of folding signatures and includes a blade cylinder, which is provided with at least one blade; a counter-pressure cylinder, which is provided with at least two counter-pressure elements which together define an axial gap; and a conveying element which is capable of conveying a signature, and which extends in the axial gap. The blade extends over the axial gap and the conveying element extends in the axial gap with spacing from the blade when the blade co-operates with the counter-pressure elements.
摘要:
A device for the longitudinal application of an adhesive in a folder (13) of a webprocessing printing press (14) is disclosed. The folder (13) comprises a former board (1), a device for longitudinal perforation (5) having a perforating blade (16) that is adjustable in a direction transversal to the direction of travel (15), and a cross-cutter arranged downstream of each other in the direction of travel (15) of the web of printing material (12). The device for the longitudinal application of an adhesive includes an adhesive applicator arranged downstream of the former board (1) and upstream of the cross-cutter (8) as viewed in the direction of travel (15) and having an applicator head (22) that is adjustable with the perforating knife (16) in a correlated manner.
摘要:
A device for positioning a cross cut relative to printed images on at least one printing material web in a web-fed press having at least one printing unit, includes a cross cutter. Also included is a computing device for generatingtherein at least a first control signal for changing a phase angle of the printing unit and the cross cutter relative to one another. A path length variation device for changing a path length through which the printing material web runs between the printing unit and the cross cutter is also included. The computing device further serves for generating a second control signal for changing the path length and, by interaction of the change in the relative phase angle and the change in the path length, serves for adjusting the positioning of a cross cut on the printing material web. A web-fed printing press includes the cross-cut positioning device. A method for operating the device is also provided.