摘要:
The invention relates to a device for covering a danger area on a roll changer (01) carrying at least one roll of material (03), comprising a protective cover (02), a drive (04) moving the protective cover (02), and a control unit controlling the drive (04), wherein the protective cover (02) is closed in a first operating state and is open in a second operating state, the roll of material (03) having a first rotational speed or web speed in the first, closed operating state. In a second operating state, the roll of material (03) has a second rotational speed or web speed, the second rotational speed or web speed being greater than 0. The invention also relates to a method for controlling a device on a roll changer.
摘要:
The invention relates to a method in sequential winding stations which are in a production line processing the web at successive stages. In the method the paper web issuing from a paper machine (PK) is reeled in a reel-up (KR1) around a reel spool (T1) to form a reel, the paper web is unwound in an unwind (AR) from the reel to the finishing machine (JK) for paper, and the paper web passed through the finishing machine (JK) for paper is reeled in a reel-up (KR2) around a reel spool (T2) to form a reel. At least the reel spools (T1) used in the area between the reel-up (KR1) of the paper machine (PK) and an unwind thereafter, have different dimensions, advantageously larger diameters, than the reel spools (T2) used later in the production line.
摘要:
The invention relates to a method in sequential winding stations which are in a production line processing the web at successive stages. In the method the paper web issuing from a paper machine (PK) is reeled in a reel-up (KR1) around a reel spool (T1) to form a reel, the paper web is unwound in an unwind (AR) from the reel to the finishing machine (JK) for paper, and the paper web passed through the finishing machine (JK) for paper is reeled in a reel-up (KR2) around a reel spool (T2) to form a reel. At least the reel spools (T1) used in the area between the reel-up (KR1) of the paper machine (PK) and an unwind thereafter, have different dimensions, advantageously larger diameters, than the reel spools (T2) used later in the production line.
摘要:
A method of winding a polymer film web around a cylindrical core, where the core is heated by blowing hot-air against the core prior to winding the polymer film web, and the polymer film web is wound around the heated core while blowing hot-air against the polymer film web. In another embodiment of the winding method, the polymer film is wound while knurled along both edge parts in the width direction of the film to form knurls so as to gradually decrease in the thickness thereof from one end of the film that contacts with the core toward the other end of the film. Furthermore, a heat treating method for annealing a film roll and a heat treating apparatus therefor are disclosed, which method comprises the steps of surrounding the film roll with heat insulating panels and blowing hot-air against the film roll in the direction along the core axis while rotating the core intermittently or continuously at a rotary speed of from 0.04 to 4 revolutions per hour.
摘要:
Provided is a bag making and packaging machine having superior workability in film joining work. A bag making and packaging machine (100) is a bag making and packaging machine that uses film (F) having at least one character or a figure printed on its front side (FS), and is equipped with a film roll support unit (10), a conveyance unit (20), a bag making unit (40), and a light emitting component (61). The film roll support unit (10) supports a film roll (FR) in which the film (F) is wound in a roll. The bag making unit (40) processes the film (F) to make bags. The conveyance unit (20) is positioned between the film roll support unit (10) and the bag making unit (40). The conveyance unit (20) feeds the film to the bag making unit (40). The light emitting component (61) illuminates, from the direction of the front side (FS) of the film (F), the film (F) positioned between the film roll support unit (10) and the conveyance unit (20).
摘要:
The present invention relates to a printing apparatus for printing on a print substrate. The printing apparatus comprises: a printing station comprising a printing assembly for printing a first image on a first side of the print substrate during a first pass of the print substrate and printing a second image on a second side of the print substrate during a second pass of the print substrate; an input station for supplying the print substrate to the printing station; an output station for receiving the print substrate from the printing station, the output station comprising: a carrousel, the carrousel comprising at least two roll-up units, the carrousel being movable in a plurality of positions, in each of which a first roll-up unit of the at least two roll-up units is arranged in a substrate receiving position and a second roll-up unit of the at least two roll-up units is arranged in a position of the group of a substrate feeding position and a roll unloading position, wherein the roll-up unit in the substrate receiving position is adapted for receiving the print substrate, thereby forming a roll,and wherein the roll unloading position is different in location from the substrate receiving position.
摘要:
The invention relates to a device for covering a danger area on a roll changer (01) carrying at least one roll of material (03), comprising a protective cover (02), a drive (04) moving the protective cover (02), and a control unit controlling the drive (04), wherein the protective cover (02) is closed in a first operating state and is open in a second operating state, the roll of material (03) having a first rotational speed or web speed in the first, closed operating state. In a second operating state, the roll of material (03) has a second rotational speed or web speed, the second rotational speed or web speed being greater than 0. The invention also relates to a method for controlling a device on a roll changer.
摘要:
The invention relates to an arrangement and to a method for separating individual pieces from a metal strip coming from a rolling mill, said metal strip having flying shears, in particular drum shears, and evacuation lines arranged downstream thereof for the separated metal strip pieces. A separator, which can pivot in the plane or from the plane of the metal strip, is provided on the outlet of the metal strip of the shears; in accordance with the type of metal strip piece which is to be separated, the pivot angle of the separator can be controlled on channels used for the evacuation of scrap pieces, cut pieces or cropped pieces or is used for passing the pieces through the head piece of the metal strip.
摘要:
A method of winding a polymer film web around a cylindrical core, where the core is heated by blowing hot-air against the core prior to winding the polymer film web, and the polymer film web is wound around the heated core while blowing hot-air against the polymer film web. In another embodiment of the winding method, the polymer film is wound while knurled along both edge parts in the width direction of the film to form knurls so as to gradually decrease in the thickness thereof from one end of the film that contacts with the core toward the other end of the film. Furthermore, a heat treating method for annealing a film roll and a heat treating apparatus therefor are disclosed, which method comprises the steps of surrounding the film roll with heat insulating panels and blowing hot-air against the film roll in the direction along the core axis while rotating the core intermittently or continuously at a rotary speed of from 0.04 to 4 revolutions per hour.
摘要:
The web leading edge (E) of a paper roll (R) for a rotary press or the like is held and prevented from raveling by three or more pieces of strong adhesive tape (Ta) during handling and loading onto a paper feed machine of the printing press. On the paper feed machine, perforated tear lines (15) are formed across the tape pieces (Ta) by a device comprising a rotary perforating wheel (42). a mechanism for moving the wheel from one end to the other ofthe roll (R) and also moving it against and away from all of the tape pieces (Ta), and a tape detecting device (BS) and a controller (45) for automatically operating the mechanism. The tape pieces (Ta) can then be easily torn to release the web leading edge (E) immediately prior to web splicing.