Abstract: A method for a multi-roll calender and a multi-roll calender for controlling the moisture gradient of a fibrous web and for enabling the manufacture of high quality paper grades, such as WFC, LWC-roto and SC-A by on- and off-line calendering. An on- or off-line multi-roll calender formed of separate sets of rolls is used for calendering, and the fibrous web (W) is subjected to intermediate moistening between the sets of rolls (A, B).

Abstract: Superplastic forming of sheet metal blanks is advanced both is quantity and quality with the utilization of a part separating and pressure distributing mid plate sandwiched between a pair of blanks. This arrangement is loaded between upper and lower die halves operatively mounted in a heated press which closes to effect the piercing of one of the blanks by a nozzle which subsequently delivers pressurized air or other inert gas to an intermediate chamber formed by the mid plate between the blanks to effect the simlayaneously forming of separate parts in both forming dies.

Abstract: A baler having pre-compression lid stops and method of operation where stops located on a pre-compression lid prevent rotation of the pre-compression lid into the pre-crush chamber to prevent impingement of a gatherer ram with the pre-compression lid.

Abstract: In a process in roller folding a folding roller is moved against a workpiece. The urging force of the folding roller against the workpiece is resilient, and the folding roller moves in a path along the workpiece by means of a movement device provided with a control system. The urging force is sensed by a sensor, which is integral in or included in the movement device, and the output signal of the sensor is fed to the control system.

Abstract: In the method for leading a web between calendar roll nips (N), a web (W) is guided between the calender roll nips (N) in a loop which runs apart from the calender rolls, inside which loop an air pocket (3) is formed. The mass and/or beat flow in the air pocket (3) is prevented in the cross direction of the web by means of obstacles (5) placed in connection with the pocket.

Abstract: The test mill is a reduced-scale model of an industrial mill used in the mining industry and comprising a rotary shell (10) capable of rotating about its longitudinal and horizontal axis. This shell is capable of containing a certain amount of grinding media and of receiving a certain amount of material to be ground so as to be able to operate under conditions comparable with those of an industrial mill. The shell is divided, in the longitudinal direction, by a perforated transverse partition (24), into a grinding chamber (20) and a measurement chamber (22), the perforations in the partition being sized to hold the grinding charge back and allow the ground matter to pass through, whereas the shell (10) comprises a series of injectors (28) allowing fluid products to be injected into the grinding chamber (20). It is possible to make in-situ and continuous analyses of the pulp in the measurement chamber.

Abstract: The invention concerns a tool for regulating the surface pressure on a blank constituting a metal plate which forms the starting item for shaping a finished item in a press. The blank is placed between a draw ring (23) and a blank holder ring (24). Besides, the tool comprises a shimming plate (1, 5, 10) provided with chambers (2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14) which are delimited by the shimming plate itself and by a flexible membrane (27). The shimming plate is placed between a tool bottom part (17), alternatively a tool top part (16), and the blank holder ring, alternatively the draw ring. A pressure medium like hydraulic oil may be led to the chambers. Thereby it is possible locally and individually to increase the surface pressure on the blank depending on the number of chambers, the design of chambers and the location of the chambers in the shimming plate. Furthermore, it is possible to regulate the pressure during the shaping process itself.

Abstract: A tree felling saw head has two pairs of links and two hydraulic actuators to provide high rotation of the head relative to a mounting adapter in a lateral plane which is perpendicular to a cutting plane.

Abstract: An integrated stacker for positioning materials in a stack, compressing the stack and positioning and sealing a strap onto itself around the stacked and compressed materials includes a frame, a conveyor mounted to the frame, and a stacking assembly mounted to the frame. The stacking assembly includes a feed for feeding the materials onto the stack. The stacker further includes aligning arms operably connected to the frame for aligning the materials on the stack, a compression section mounted to the frame for compressing the stack of materials and a strapper section mounted to the frame. The strapper section includes a strap chute for conveying the strap around the compressed stack of material, a feed head for tensioning the strap and a welding head for sealing the strap material onto itself. The strap chute defines a strap path. The feed head, welding head and strap chute are mounted to a bracket that is mounted to the frame along a portion of the strap path.

Abstract: A power tool workstation for mounting one of a series of different power tools includes a top plate with a flanged opening therein for receipt of an insert upon which any one of a number of power tools is mounted.

Abstract: A feedback control system for use in a press machine is adapted to monitor and adjust the clearance between the gib and slide. A pressurized chamber, such as a hydraulic piston-cylinder combination is disposed in actuating relationship to the gib. Selective pressurization of the piston-cylinder induces a controlled displacement of the gib towards or away from the slide, thereby regulating the spatial relationship therebetween. A sensor provides a measure of any possible clearance between the gib and slide. The clearance measurement is compared to allowable reference data. A controller controls the pressurization of the chamber in accordance with the comparison results, thereby controllably moving the gib. The gib may be selectively displaced to optionally effectuate a minimal clearance condition.

Abstract: An improved twin screw extruder device (14) is provided which is capable of producing a wide variety of high quality extrudates having greatly varying final properties, without the need for extensive machine modifications. The extruder (14) includes a barrel (16) together with a co-rotating twin screw assembly (22). The assembly (22) is made up of a pair of screws (50, 52) having central, tapered shafts (54, 56) equipped with outwardly extending helical flighting (58, 60); the screws (50, 52) are non-parallel and are positioned so that the flighting (58, 60) thereof is intercalated along the length of the screws (50, 52). The fighting is of specialized configuration and tapers along the length of the screws (50, 52) preferably at an angle of taper different than that of the shafts (54, 56); moreover, the width of the outer flighting surfaces (70, 72) increases along the length of the shafts (54, 56).

Abstract: A roll shifting cylinder 14 is driven to pivot a lever arm 12, thereby shifting a work roll 1 via a thrust bearing 15. A control unit 27 performs auto-positioning control, based on a shift amount performance value of the thrust bearing 15 detected by a shift amount detection sensor 16, so as to obtain a target roll shift position. A constant clearance amount is maintained between an end surface of the work roll 1 and the thrust bearing 15 during a rolling operation, and a chockless mill is effectively used as a work roll shift mill.

Abstract: A calender for treating a paper web, having at least one roll stack capable of being loaded from the end and in each case comprising a top and bottom end roll and a plurality of intermediate rolls, which are jointly arranged in a roll stack plane, and the rolls including hard and soft rolls in order to form operating nips in the form of soft nips, wherein each soft roll which forms an intermediate roll has a greater diameter than a soft roll which forms an end roll.

Abstract: The invention relates to a method and a device for compressing empty packaging waste. The compression stroke is characterized by three different possibly positions and the compression device is situated on or above a container for collecting empty packaging.

Abstract: A strapping packaging device includes a compressing device, a cutting device, a strap-rolling device and a strap-pressing device. The eccentric cam of the compressing device is actuated to rotate by an operating rod, and the eccentric cam presses down a slide base together with a press block to compress on the strap-clamping member of a packaging strap. The strapping packaging device can not only precisely compress on the strap-clamping member, but also cut off the packaging strap easily at the same time.

Abstract: An apparatus for removing liquid from a composite mixture of liquid and solids comprises a hopper mounted atop a compactor ram assembly. A snout section and an extruder section are mounted axial to the compactor ram assembly. A hydraulically-operated ram compresses wet material into the snout and extruder sections. Under pressure from the ram, liquid in the waste material escapes from drainage holes in the snout section top, bottom, and sides, and the extruder section top, bottom, and sides. A platen, pivotally mounted to the extruder top plate near the exit of the device and biased with a constant pressure, controls the back pressure in the extruder and snout sections. The apparatus has an extruder section and snout section of the same constant cross section and coaxial with each other. In a second embodiment of the apparatus, certain of the walls may diverge to further facilitate access to the first platen through the exit opening.

Abstract: A roll baler including circumferentially rotatable conveyor elements limiting a compression space therebetween, and a device for wrapping up a roll bale, which is formed in the compression space, with a section of a sheath web, the wrapping-up device including a pivotable start-up element for pressing the sheath web, against a surface of one of the rotatable conveyor elements, a separation element for cutting the sheath web off after the wrapping-up process ends and pivotable between cutting and non-cutting positions, and a common pivot axle for supporting the start-up element and separation element for pivotal movement.

Abstract: Raw material containing precious metals and heavy minerals is introduced into a comminuting chamber. The raw material falls onto rotating chains which drive the material against the side wall of the chamber with sufficient velocity to cause the raw material to fracture. Air flows upwardly at the side wall and classifies the particles into a first fraction which falls to the floor of the chamber and a second fraction which is carried upward to a trommel. Large particles from the trommel are recycled to the chamber while fines are discarded as tailings. The rate of upward flow of air in the chamber, the rate of rotation of the chains and the size of particles separated by the trommel are all adjusted in order to ensure that the particles that collect on the floor of the chamber are rich in precious metals and heavy minerals.

Abstract: A round baler includes a housing, a bale chamber, and a bale wrapping apparatus. The bale wrapping apparatus includes two twine supply rolls providing two twine strands; two twine dispensing arms, each presenting one of the two strands; a shear bar connected to the housing; and a knife assembly rotatingly connected to the housing by an elongated bar to rotate from a first position to a second cutting position, the two twine strands extending transversely between the shear bar and the knife assembly, the knife assembly comprising: a mounting assembly comprising a mounting member having two protruding posts; a knife having two slots formed therein and a cutting edge, the knife mounted on the mounting member so each protruding post extends through one of the slots; and a biasing member disposed on each post to bias the knife toward the mounting member while permitting the knife to move relative to the mounting member.