摘要:
A device for automatically unwinding web-shaped materials (8) from a master roll (3), and to a method for operating a device of this type are disclosed. The device has an infeed arm (2) and a first drive unit (6), wherein the master roll (3) by way of the winding core (4) thereof is rotatably mountable on the infeed arm (2), and the first drive unit (6) serves for introducing a driving force into the master roll (3). In order for high productivity to be achieved, the unwinder (1) has an outfeed arm (13) to which a second drive unit (14) for introducing a driving force into the master roll (3) is assigned, wherein the master roll (3) during an unwinding procedure is transferable from the infeed arm (2) to the outfeed arm (13). The material web (8) is then unwound from the master roll (3) which is mounted on the infeed am (2) down to a predefinable minimum diameter, wherein during the ongoing unwinding procedure the master roll (3) is subsequently transferred to the outfeed arm (13) and thereon is further actively unwound, wherein a new master roll (3′) is received by the infeed arm (2). Unwinding without interruption is thus enabled.
摘要:
The present disclosure relates to an adhesive tape dispenser, for an adhesive tape roll having a core element, said dispenser essentially consisting of or comprising a carrier unit, in particular a housing, at least one grip member being connected, in particular via a connecting member, to the carrier unit for handling of the adhesive tape dispenser, a first bearing member essentially consisting of or comprising a rotatable bearing shaft arranged and adjusted for receiving the core element of an adhesive tape roll and for rotatably supporting said roll which is directly or indirectly arranged on and/or fastened to the carrier unit, a second bearing member essentially consisting of or comprising an, in particular non-rotatable, bearing shaft, which is directly or indirectly arranged on and/or fastened to the carrier unit, and a receiving member arranged and adjusted for receiving the core element of an adhesive tape roll that is rotatably arrangeable or supported on said second bearing shaft, an, in particular rotatable, applicator unit for attaching the adhesive tape to objects which is directly or indirectly joined to the carrier unit or which is integral with said carrier unit, at least one fastening means for a cutting blade, which is directly or indirectly joined to the carrier unit or which is integral with said carrier unit, and optionally a cutting blade held by said fastening means, wherein the grip member and applicator unit are located on opposite sides of the first or second bearing member and/or of the center of gravity of the dispenser.Furthermore the disclosure relates to an adhesive tape roll consisting of or comprising a core which comprises a receiving opening extending through the core in the longitudinal direction and an adhesive tape which is wound onto the core, wherein the core consists of or comprises a plastic material or a metal material, that the receiving opening which extends through the core has a polygonal cross-section, and that at least one stop is provided at an end of the receiving opening.
摘要:
A printer cartridge suitable for use in a cartridge-based printer houses and dispenses a roll of label media. The cartridge includes a housing having a top wall and a bottom wall. A yoke pivotally mounted between the top and bottom walls for pivotable movement about a pivot axis includes a label media supply shaft for holding a roll of label media. The label media supply shaft has a longitudinal axis spaced from, and parallel, to the pivot axis. A label media drive roller is rotatably mounted between the top and bottom walls, and a biasing means biases the yoke toward the label media drive roller to maintain the roll of label media in contact with the label media drive roller and defines a beginning of a media path. In one embodiment, the yoke is adjustable to accommodate different label media widths.
摘要:
An apparatus and method of winding a continuously moving web, and for splicing and transferring the web from a first core to a second core with no-fold-back or wrinkling of the web material during the splice. The web is fed through a first nip point and thereby applied to a lay-on roll, the lay-on roll further applying the web material onto first and second cores alternatively. An electrostatic charging bar positioned downstream from the nip point emits an electrostatic charge onto the web to temporarily adhere the web to the lay-on roll. A rotatable cutting knife cooperatively engageable with the lay-on roll cuts the web at a point downstream from the electrostatic charging bar but upstream from the first and second cores to produce a tail and new leading edge. The tail continues to be wound about the first roll, and the new leading edge is affixed to the second roll and the web is thereafter wound about the second core. The first and second cores are each independently movable toward and away from the lay-on roll so the web may be spliced and transferred from the first core to the second core, and alternatively from the second core to the first core.
摘要:
An apparatus for winding continuously produced layer material (e.g. synthetic-resin film or foil) on an elongated core holds a plurality of cores in a magazine and grips them axially one at a time between two arms to place them on the material in a cradle formed by a plurality of rollers. Then two pivotal transport arms axially grip the winding core and, as it is wound, move through a dead center position to deposit the wound core in an unloading station. As the one core is being unloaded, another is being fed into the cradle for continuous winding.
摘要:
Rolling assembly for packaging web material in a roll having a base member with concave arcuate feed surface defining an upwardly-extending ramp, first intermediate member movably coupled to base member, and top member moveably coupled to at least one of base member or first intermediate member, top member having a concave arcuate pressure surface facing feed surface of base member. The base member, first intermediate member and top member collectively forming an iris with a feed space, the iris moveable between a first condition and a second condition, and configured to receive web material along the feed surface and direct the web material upwardly toward the top member to form a roll within the feed space, the iris moving toward a second condition as the roll of web material increases in cross dimension against the pressure surface of the top member.
摘要:
A printer cartridge suitable for use in a cartridge-based printer houses and dispenses a roll of label media, and includes a housing having a top wall and a bottom wall. A yoke pivotally mounted between the top and bottom walls for pivotable movement about a pivot axis includes a label media supply shaft for holding a roll of label media. The label media supply shaft has a longitudinal axis spaced from, and parallel to, the pivot axis. A label media drive roller is rotatably mounted between the top and bottom walls, and a biasing means biases the yoke toward the label media drive roller to maintain the roll of label media in contact with the label media drive roller. Ratchet teeth fixed relative to at least one of the housing and yoke engage structure of the other of the housing and the yoke to prevent the yoke from pivoting away from the label media drive roller.
摘要:
A printer cartridge suitable for use in a cartridge-based printer houses and dispenses a roll of label media. The cartridge includes a housing having a top wall and a bottom wall. A yoke pivotally mounted between the top and bottom walls for pivotable movement about a pivot axis includes a label media supply shaft for holding a roll of label media. The label media supply shaft has a longitudinal axis spaced from, and parallel, to the pivot axis. A label media drive roller is rotatably mounted between the top and bottom walls, and a biasing means biases the yoke toward the label media drive roller to maintain the roll of label media in contact with the label media drive roller and defines a beginning of a media path. In one embodiment, the yoke is adjustable to accommodate different label media widths.
摘要:
A sheet winding apparatus having stationary type touch roller is provided with means for moving a winding core between a sheet winding position and a sheet roll waiting position. Whenever a strip of sheet is wound in a roll of prescribed amount on the winding core, the finished sheet roll is moved to the sheet roll waiting position and, in the meantime, a new winding core is supplied and the sheet of the aforementioned finished sheet roll is cut at the trailing end and the newly formed leading end of the sheet is attached to the new winding core. The winding of the sheet on the new winding core is started as soon as the winding core supporting means returns to the winding position.
摘要:
The weight components along a pair of support arms for a coil of a foil web provide inputs to a controller whose other input is from an angle detector measuring the inclination of said arms so that the controller can operate a control member such as a fluid cylinder to maintain a constant contact pressure between the coil and a contact drum applying the web to the coil.