Abstract:
A rewinder includes a lockout cam for controlling the actuation of transfer pins and transfer pads on the bedroll of a rewinder. The transfer pins and transfer pads are mounted on a rotatable pin shaft and a rotatable pad shaft, respectively. A cam follower assembly on the pin shaft is engageable with a pin cam for controlling movement of the transfer pins. A cam follower assembly on the pad shaft is engageable with a pad cam for controlling movement of the transfer pads. The lockout cam is rotatably mounted relative to the bedroll. A first portion of the lockout cam is engageable with the cam follower assemblies for preventing the pin and pad cam follower assemblies from engaging the pin cam and the pad cam, respectively. A second portion of the lockout cam permits the pin and pad cam follower assemblies to engage the pin cam and the pad cam, respectively. During most of the winding cycle, the lockout cam is rotated at the same speed as the bedroll so that the first portion of the lockout cam engages the cam follower assemblies and prevents the cam follower assemblies from engaging the pin and pad cams. Near the end of the winding cycle, the lockout cam is rotated at a different speed than the bedroll so that the second portion of the lockout cam is aligned with the cam follower assemblies and the pin and pad cam follower assemblies engage the pin and pad cams, respectively.
Abstract:
A method and apparatus for reeling a traveling web, such as paper produced on a papermaking machine, includes a pair of spaced, horizontally disposed rails (12, 12') for supporting one or more reel spools (18). One of the reel spools (18a) is moved into an initial position (33) and rotated to bring it up to machine speed. A support drum (48) is moved translationally substantially vertically (52, 54, 56) from beneath the rotating reel spool to engage it along a nip line of contact (N1). The on-coming web (W) is directed into the nip of the rotatably driven reel spool to begin the web reeling process to build a wound web roll (8). After having reached a certain diameter the web roll (8) is moved horizontally from the initial position (33) to a winding position (41) while maintaining it rotatively supported on the rails (12, 12'). In the winding position (41) the support drum (48) engages the web roll (8) along a nip line of contact (N2). The support drum (48) remains in contact with the wound web roll building upon the reel spool (18) continuously throughout the whole winding procedure until the desired wound web roll diameter is attained. The reel spool/wound web roll is maintained under the control, or influence, of three forces at all times during the formation of the wound web roll: 1) torque from a drive means attached to the reel spool, 2) nip pressure from the support drum, 3) web tension of the web coming onto the driven reel spool. The support drum preferably partially supports the wound web roll at all times during the reeling process, and the wound web roll remains horizontal on the support rails (12, 12') at all times as the wound web roll is formed.
Abstract:
In machines for winding continuous strips of material (4), in particular paper or carton, devices already exist for cutting through the strip of material on the support or backing roller (1), such devices having a cutter which can be placed against the material in the region in which the material is wrapped round the roller and which can be moved transversally to the direction of motion of the material. In order to enable the strip of material (4) to be cut through reliably when the roller is changed, using a device of simple design, the invention uses as the cutter a wheel (19) which has a sharp cutting edge and can be pressed by spring action against the roller (1).
Abstract:
A rewinding machine (5) arranged to wind a web of absorbent substrate (11) into multiple logs (30) comprising a perforating module (20), a cutting module (21), a winding module (22) and a control module (50), the web of absorbent substrate (11) travelling into said modules according to a machine direction (MD), wherein the perforating module (20) is arranged to provide the web of absorbent substrate (11) with regularly spaced perforation lines (28, 38) substantially transversally orientated relatively to the machine direction (MD), wherein the cutting module (21) is arranged to sever the web of absorbent substrate (11) substantially transversally relatively to the machine direction (MD), wherein the winding module (22) is arranged to wind the web of absorbent substrate (11) so as to produce logs (30) of web of absorbent substrate, and wherein the control module (50) is coupled to the perforating module (20) and to the cutting module (21) and controls said modules operations such that: - at a transition phase (At) between two consecutive logs (30), the control module (50) deactivate the perforating module (20) and activate the cutting module (21), and - out of transition phases (At), the control module (50) activate the perforating module (20) and deactivate the cutting module (21).
Abstract:
A winder for winding a web to produce a rolled product is provided. The winder includes a web transport apparatus that is used for conveying the web. Also included in one exemplary embodiment is a plurality of independent winding modules. The winding modules are independently positioned to independently engage the web as the web is conveyed by the web transport apparatus. The winding modules may be configured to wind the web to form a rolled product by center winding, surface winding, and combinations of center and surface winding. The winding modules are structurally and operationally independent of one another where if one module is disabled, another may still operate to produce the rolled product without shutting down the winder.
Abstract:
A winder for winding a web to produce a rolled product is provided. The winder includes a web transport apparatus that is used for conveying the web. Also included in one exemplary embodiment is a plurality of independent winding modules. The winding modules are independently positioned to independently engage the web as the web is conveyed by the web transport apparatus. The winding modules may be configured to wind the web to form a rolled product by center winding, surface winding, and combinations of center and surface winding. The winding modules are structurally and operationally independent of one another where if one module is disabled, another may still operate to produce the rolled product without shutting down the winder.
Abstract:
Apparatus (1) for winding up at least two material webs (7), in particular film webs, having at least two receiving apparatuses (3), for the rotatable mounting of at least one winding core (4), it being possible for the receiving apparatuses (3) to be transferred between a winding position (15) for winding up at least one material web (7) on the winding core (4) and a removal or loading position (16, 16', 16' ') for removing at least one winding core (17) which has finished being wound up or for feeding at least one empty winding core (4), and at least two winding cores (4) being arranged coaxially in the receiving apparatus (3) for simultaneously winding up the material webs (7) on separate winding cores (4), the winding cores (4) being mounted rotatably in each case in two bearing points (51) which are provided adjacent to the respective winding core (4), and the receiving apparatus (3) having at least three carrying arms (5), one winding core (4) being mounted in each case between two carrying arms (5).
Abstract:
Die Erfindung betrifft ein Verfahren zum Betreiben einer Wicklereinrichtung (100) einer Bearbeitungsmaschine zum Bearbeiten einer Warenbahn (102), wobei eine Wicklereinrichtung zum Auf- oder Abwickeln der Warenbahn (102) vorgesehen ist, wobei die Wicklereinrichtung (100) zur Vorgabe einer Bahnspannung betrieben wird, wobei während der Bearbeitung der Warenbahn von einer ersten Bahnspannungsvorgabemethode zu einer zweiten Bahnspannungsvorgabemethode umgeschaltet wird.
Abstract:
The invention relates to a method in threading of a paper web (PR) in connection with the reeling up process, wherein via a nip contact (NK) formed between a reeling cylinder (1) and a reeling core (2) entering the drive, a paper web (PR) guided over the reeling cylinder (1) is passed in full width to the opening of a pulper (P) below the nip contact (NK) before cutting the paper web (PR) and guiding the same to the reeling core (2). On the outer surface (1a) of the reeling cylinder (1), especially on a sector in which the outer surface of the reeling cylinder (1) and the paper web (PR) are in contact with each other, a pressure effect deviating from the pressure of the environment is exerted, said pressure effect being produced from a combination of a negative pressure and a positive pressure in such a manner that in the travel direction of the paper web (PR) the negative pressure effect is exerted on the paper web (PR) at least primarily before the point of location of the nip contact (NKL) of the final reeling, and the positive pressure effect is exerted on the paper web (PR) at least primarily after the area of location of the nip contact (NKL) of the final reeling.