Abstract:
A sheet roll forming system for forming sheet rolls by winding a heat transfer recording sheet around an outer periphery of a plurality of cores including a core supplying apparatus and a sheet roll discharge apparatus. The core supplying apparatus includes a cantilever shaft supporting the cores, a tray below the shaft and movable up and down in a direction of the shaft, and core stoppers on the tray where the shaft is an air shaft that can increase in diameter when air is supplied from a charge and exhaust apparatus. The sheet roll discharge apparatus includes the shaft supporting rolls of the recording sheet on the cores, a tray below the shaft, and a stopper on the tray.
Abstract:
A device for winding web-shaped material on winding sleeves into winding rolls and for unwinding winding rolls with a beam, which floats in a frame and can be rotated around a horizontal axis and at which at least two winding shafts, which are provided with drives and can be rotated around vertical axes, are mounted so as to float. To provide simple access to the winding shafts when said winding shafts are mounted so as not to oscillate, traverses are attached to the beam, said traverses supporting bearings, which can be moved between their fixable position bearing the free ends of the winding shafts and their position releasing them.
Abstract:
The machine with a continuous operating cycle, is suitable for packaging in rolls various strip-shaped materials by a plurality of longitudinal cuts of a wide strip of material fed by a roller. The machine comprises at least one pair of spindles supporting a plurality of cores on which the strip-shaped materials, obtained by cutting a wide strip of material fed by a roller, will be wound. Once the rolls of material have been filled with the required quantity, the spindles are carried to a discharge station or unit, which cooperates with a supporting shaft on which the above discharge units carry the final rolls. The machine also comprises at least one pair of shafts to prearrange a new plurality of cores on the spindles for the start of a new packaging cycle.
Abstract:
A web rewind apparatus includes an interior rider roll unit moving with a turret and engaging the winding roll during winding and particularly during indexing to move a new core in place and remove the winding roll. The rider rill is pivotally mounted within the roll support, rotates with the rewinding roll and engages the roll during rewinding or during indexing only. In another form, the rider roll is mounted on the turret by a linear slide and a counterweight member. A coupling connects the rider roll unit and the counterweight member to create an essentially zero gravity force by the rider roll unit. A pistonless cylinder is coupled to the counterweight to apply a constant surface force on the rider roll and thereby on the winding roll. The rider roll is mounted on the slide unit in a suitable bearing unit with the axis of the rider roll parallel to the winding axis. Adjustable bearing units mounted to the slide and permit skewing of the rider roll relative to the winding axis.
Abstract:
Apparatus for winding a web section without using a core, the web section including a plurality of transversely extending perforation lines and wherein a torn web section is removed from a continuously supplied web. The apparatus includes two winding stations that are diametrically opposed on opposite sides of rotatable, circular carrying discs. Each of the winding stations includes a pair of opposed winding heads, and the winding heads each includes a pair of winding pins that extend in the direction of the winding aixs. The pins are rotatably mounted for rotation as a pair about the winding axis and are connected to a rotary drive. The winding pins are also extendable to a winding position and are retractable to a non-winding position. When in the winding position the pins extend outwardly from the winding head and are spaced from each other a distance sufficient to receive a web therebetween, and upon rotation of the winding heads the web is wound into a roll without the need for a core.
Abstract:
Apparatus for converting an intermittently running web into a series of discrete bolts by winding the web onto flat strip-shaped cores has two parallel winding devices each of which has two spaced-apart coaxial rotary bolt holders with jaws which can engage the marginal portions of the web as well as the end portions of a core before the respective bolt holders are set in rotary motion. Each winding device is preceded by a bolt deflecting device which prevents fluttering of the web during winding. The winding devices and the deflecting devices are mounted on two brackets which are indexible through 180.degree. about a fixed axis to move one of the winding devices to an operative position while the other winding device is held in a position of readiness and vice versa. The web can consist of a single layer or of two or more overlapping layers.
Abstract:
A turret-type winder particularly adapted for winding of impervious sheet-type web materials, such as plastics, provides self-contained and pivotally mounted pressure rolls which contact the cores and the winding roll throughout the entire winding process and throughout the indexing of the arms from a core loading station to a roll unloading station while maintaining the relative geometry of contact such that the web contacts the pressure roll at or before contacting the winding roll for effectively excluding the entrapment of air between the winding layers.A method of winding from a roll changer or other apparatus for providing a web of material includes the movement of the spindle end of the arms of a turret-type changer through the path of web leading to a winding roll to the back or remote side of the web so that the web lead is brought between the spindle arms and between the empty spindle and the winding roll. Thereafter, web transfer to a new core is accomplished by placing the web onto the core at a side of the core adjacent the axis of the turret, thereby providing movement of a self-contained pressure roll into coacting engagement with the core and the building or winding roll throughout the entire winding process at a region on the periphery of the core and the roll substantially at the web lead-in point and substantially at the nip for effectively excluding air throughout the entire winding process.
Abstract:
A center shaft turret winder is provided with core change-over mechanism, so that rewinding of webs e.g. in a slitter-rewinder can proceed continuously, by replacing full cores with empty cores and severing the wound webs between the respective cores. The mechanism includes a knife member which pivots about an axis parallel to the center shaft axis to bring its cutting edge into contact with the moving webs, after the core shafts have rotated around the center shaft, so that the tension in the webs increases and they are severed so that rewinding continues on the new cores and the old, full cores can be removed and replaced with empty cores. A paper printing and slitting machine equipped with such a slitter/rewinder and change-over mechanism is disclosed, together with the electromagnetic clutch arrangements for driving the winding cores and various forms of knife member.
Abstract:
A device for producing roll shaped packets of bags of plastic foil, whereby continuously a web is supplied in which the bags are held together through perforations, said device comprising two winding heads having lengthwise retractable and extendible winding fingers which can also be spreaded, the web during winding of one head running in between the fingers of the other head. Both winding heads are mounted at diametrically opposed locations of a revolvable disc having two fixed positions. The supply means comprise one roller within the line of circulations of the winding head situated at one side with respect to the vertical through the axis of the revolvable disc, and one roller outside the said line of circulation and situated at the opposite side of said vertical. A switch mechanism under control of a bag unit counter sets the non-operative head into rotation and brings the operative head to a standstill, whereby a perforation is caused to break and the winding is taken over by the head just started.