摘要:
The invention relates to an feeding table, comprising a pair of rollers (13, 14), referred to as pressers, arranged downstream from the cutting system, said pair including a motor-driven roller (13) and at least two driven rollers (14) which are arranged so as to form at least two pressure tracks engaging with the plastic film (6) moving between said pair of rollers (13, 14). Each pressure track includes a driven roller (14), the shaft (23) of which is supported by a mobile frame (19) that is guided on a beam (20), wherein said beam (20) is secured to the general frame (2) and a foolproof system for applying pressure is provided between said beam (20) and said frame (19) in order to restrain said driven roller (14) and hold the latter in tangential contact with the motor-driven roller (13).
摘要:
A roll-shaped medium transport device (1) includes: a medium supply unit (21) that keeps a roll body (R) formed by winding a roll-shaped medium (M) on a support shaft (R1), and unwinds and supplies the roll-shaped medium (M); a transport unit (24) that transports the roll-shaped medium (M) unwound from the roll body (R); a rotation detecting unit (60) that detects rotation of the support shaft (R1); a rotation unit (61) that rotates the support shaft (R1); and a determination unit (40) that determines abnormality of a transport state of the roll-shaped medium (M) on the basis of the rotation detecting unit (60) when the rotation unit (61) rotates the support shaft (R1), when the rotation detecting unit (60) does not detect the rotation of the support shaft (R1) in a state where a transport operation of the roll-shaped medium (M) is performed by the transport unit (24).
摘要:
An improved contact nip roll, a method for assembling an improved contact nip roll, a system for nipping a web, and a method for nipping a web are provided. The improved contact nip roll integrates an inner softer core that can provide compliancy to web caliper variations, while rigid annular rings and a harder outer skin can maintain a uniform contact area.
摘要:
The invention relates to an improved device for driving a preheating roll assembly comprising several rolls, during a heating or preheating stage (H1). Said device is characterised as follows: the motor assembly comprises at least one individual drive and preferably two individual drives, which are used to drive at least the exit roll (9) and preferably the entry roll and the exit roll (1, 9); the motor assembly also comprises one or more asynchronous motors, each asynchronous motor controlling the surface speed and the torque of one of the intermediate rolls; and a common frequency converter operates one or more asynchronous motors, in particular all asynchronous motors.
摘要:
A first cutter (130) (cutting unit) is arranged between a color recording unit (120) (first printing unit) and a overcoat recording unit (140) (second printing unit). In a sheet of recording paper (200) (printing medium), a portion where color printing by the color recording unit (120) is complete is cut off by the first cutter (130). The cut off recording paper (printing medium piece) is subjected to overcoat processing by the overcoat recording unit (140). Simultaneously with this, the color recording unit (120) performs next color printing on the recording paper (200). This shortens the time required for printing without degrading the printing quality in the printing device having a plurality of printing steps. Moreover, by optimally arranging the color recording unit (120), the first cutter (130), the overcoat recording unit (140), the second cutter (160), and the like, it is possible to eliminate unnecessary paper feed.
摘要:
The invention relates to a transport apparatus (2) for a printing press (1), particularly for a digital printing press, for transporting a substrate (6) to be imprinted. The transport apparatus (2) comprises a transport roller (4), a pressure roller (5), which can be pressed radially against the transport roller (4) by way of a guidance apparatus (21), and a drive unit (9) for driving the transport roller (4). The transport roller (4) has a ceramic coating (12) on the surface, at least partially on the lateral surface.