摘要:
Process and apparatus for cutting a running material web in which the material web is wound onto several winding cores in succession, such that winding of the material web onto a new winding core begins after a predetermined diameter has been attained in a wound roll formed on an old winding core. The process includes moving the new winding core between a winding roll and the wound roll, such that the material web is fed onto the wound roll from the winding roll. The process further includes forming a nip between the new winding core and the winding roll, positioning at least one cutting device one of in a region between the wound roll and the nip and in a region upstream of the winding roll relative to a web run direction, and moving the at least one cutting device relative to the material web in a plane substantially parallel to the material web. In this manner, the running material web can be completely cut. The apparatus includes at least one cutting device adapted to completely cut the material web, and the at least one cutting device can be mounted for movement relative to the material web in a plane substantially parallel to the material web.
摘要:
Linear drive apparatus and process of using the same. The apparatus includes a movable device and a first high-speed thrust device coupled to the movable device. The first high-speed thrust device exerts an acceleration force on the movable device to move the movable device from a ready position. A movable retaining device is coupled to the movable device, so that the retaining device is adapted to hold the movable device in the ready position against the acceleration force. A release of the movable retaining device triggers immediate movement of the movable device via the acceleration force. The process includes positioning the movable device in an idle position, holding the movable device in the idle position with the retaining device, exerting an acceleration force on the movable device while it is being held in the idle position, and releasing the movable device from the idle position by moving the retaining device. In this manner, the acceleration force moves the moving device.
摘要:
A system for producing coreless fabric rolls includes a feed station (12) operable to supply a leading edge of a fabric web (24) from a parent roll (18). The system includes a first tucking station (132) operable to position the leading edge of the fabric web (24) adjacent one of a plurality of spindles (48, 50, 52) coupled to a turret (46). The system also includes a winding station (38) comprising a winding roller (36). The winding station (38) is operable to receive the leading edge in a nip defined by the spindle (48, 50, 52) and the winding roller (36) and wind the fabric web (24) into a fabric roll about the spindle (48, 50, 52). The system also includes a cutting station (40) operable to separate the fabric roll from a remaining portion of the fabric web (24). The system also includes a second tucking station (42) operable to receive the spindle (48, 50, 52) from the winding station (36) and wind a trailing edge of the fabric roll about the fabric roll.
摘要:
Process and apparatus for threading a material web onto a reel. The process includes guiding a leader strip of the material web over at least a part of a circumference of a support drum, guiding the leader strip through an effective region of a guide device toward a waste receptacle, widening the leader strip to a desired width of the material web, placing a reel against the support drum, thereby forming a nip, cutting the material web, and winding the material web onto the reel, thereby forming a wound roll. The apparatus includes a support drum adapted to be at least partially wound around by at least a leader strip of the material web, one of a reel and a wound roll positionable against said support drum to form a nip during a winding process, a waste receptacle positioned after the support drum in a web travel direction, and at least one guide device positioned between the support drum and the waste receptacle.
摘要:
Process and winding machine for winding a material web onto a reel spool. The winding machine includes the winding machine includes a carrier drum, such that the carrier drum and the reel spool are arranged to form a winding nip. Two separation elements are positionable in a region of the two edges of the material web and at a distance from the respective edge of the material web. A device is included for moving the two separation elements cross-wise to a web travel direction and at least to a center of the web while the material web is running. In this manner, the two separation elements are adapted to form edge strips. The process includes guiding the material web over the carrier drum, positioning the two separating elements in a region of the two edges of the material web and at a distance from the respective edges of the material web, cutting the material web, in preparation of a reel spool change, by moving the two separating elements cross-wise to a web travel direction at least to the center of the web while the material web is running, thereby forming strips at the respective edges, and separating the cut material web.
摘要:
Process for severing a traveling material web, at reel spool changeover, in a winding device. The process comprises moving a severing device into the web travel path between a winding roll and an empty reel spool on one side and a reel spool carrying a reel formed on the other side of the device and severing the material web across the width of the material web at several places, sequentially by the severing device, at separation points which lie along a line that runs at an angle to a travel direction of the web. A winding device for a material web, e.g., a paper web, comprises a winding roll, an empty reel spool on one side of the winding roll and a reel spool carrying a reel on another side of the winding roll. A severing device for severing the material web, at reel spool changeover, is moved into the web travel path between the winding roll and the empty reel spool. The material web is severed across the width thereof at several places sequentially by the severing device, at separation points which lie along a line that runs at an angle to the travel direction of the web.
摘要:
An apparatus for dispensing a paper wiping material includes a toothed spur mechanism which includes an arm which pivots counter to an elastic return relative to a pivotally mounted cutter blade holder. The arm includes a curvilinear section having a plurality of teeth which engage a fixed rack. The engagement defines an angular sector bounded by the initial contact area between the teeth of the fixed rack and the arm, the pivot axis of the toothed spur mechanism and the cutting surface of the cutting blade which extends approximately 160 to 170°. The elastic return includes a first end which is fixed to a tab of the blade holder and a second arm which is fixedly attached to the arm permitting an elastic interconnection.
摘要:
A device including blades and pins is mounted for interaction with a bedroll for separating or cutting a web or sheet of material as the web travels around the circumference of the bedroll. The assembly comprises a clamp having a bottom side and a front side. Two blades having an upper surface and a lower surface are provided, with a blade spacer located between the blades, and operably connected to the clamp. A blade from a nearby chopper roll is adapted to engage the blades of the device to separate a sheet as it travels along the processing pathway. A unitary elongated mandrel that is fixed in relation to the blade, and configured to carry or move a severed web, is provided. The unitary mandrel employs a strut from which projections or pins extend in a line or row, the pins being adapted to pierce and carry the severed tail of the web to a core for gluing the tail to the core, followed by winding.
摘要:
The turn-up system for this invention consists of two basic parts: 1. A kraft substrate flat paper tape having a layer of water-activated adhesive on one side and a layer of pressure sensitive adhesive tape (PSAT) on the other side, which may or may not be protected by a releasable liner. The tape is approximately one to four inches in width. The tape is applied onto the outside of an empty reel spool (with or without a removable core) before the spool has been placed in the primary arms of the reel using the PSAT side to adhere the tape to the spool thus exposing the water-activated side of the tape to the ambient. The tape is to be applied in a single or multiple spiral pattern covering all or most of the length of the spool. After the application of the tape the reel spool should be loaded into the primary arms and moved into place as usual practice dictates. 2. Nozzles for supplying moisture to the tape wrapped reel spool before it is in the turn-up position (nip). This could employ a single or plurality of atomizing water/air or water/steam nozzles that produce a volume of water droplets suspended in an airflow that can be introduced into the boundary layer of air that is moving at synchronous speed with the upper surface of the paper web. Application of a moisture field into the web boundary layer on the top of the web insures that the moisture makes its destination at the nip and is applied directly to the empty reel spool and the water-activated adhesive it is carrying. When enough moisture is applied to the water-activated adhesive, the web will attach to the empty reel spool and simultaneously detach from the full paper roll thus producing a turn-up. Timing for application of the water spray can be controlled automatically with respect to position and/or rotational speed of the empty reel spool. Spray duration dwell, water/air mixture and velocity can be tightly controlled and easily adjusted. Steam or hot water can also be used if desired.
摘要:
Device and process for severing a material web. The process includes winding the material web onto a reel and severing the material web using an expanding device. The device includes an expandable device for severing the material web, wherein the device is adapted to sever the material web after the material web is wound onto the reel.