Abstract: A packaging machine includes a conveying device for advancing a packaging material web at least to a tube forming station at which the web is formed into a tube and for advancing the tube to a tube forming and sealing device to form and longitudinally seal the tube, a tensioning device to control tension of the web and/or of the tube and a control unit to control operation of the packaging machine. The tensioning device has at least one tensioning assembly having at least first and second drive rollers, a first drive motor connected to the first drive roller to rotate the first drive roller and a second drive motor connected to the second drive roller to rotate the second drive roller. The control unit controls the first and second drive motors such that a free loop of the web expands and/or advances between the first and second drive rollers.

Abstract: The present invention relates to a machine for producing multi-layer cardboard or paper, or a machine for either printing or converting, starting from a reel of paper, cardboard or other material. In general, the invention can be applied to machines wherein a reel of different materials is unwound and which requires a contrast system to regulate the tensioning of the ribbon. In particular, the invention relates to a system for braking said reel. In particular, the invention relates to a braking system (2) for a support member (1) of a reel (B), for example, a reel of paper in a machine for producing cardboard or corrugated cardboard, wherein said braking system (2) comprises a motor-generator device (8) and a mechanical brake device (9) arranged coaxially.

Abstract: An unwinder for web material includes: a first and second reel holder, a dynamic storage device, a junction device arranged between the first or second reel holder and the dynamic storage device and configured to join an end portion of web material running out on the first reel to an initial portion of web material of the second reel, an actuator configured to pull the web material. The dynamic storage device includes: a plurality of first return rollers, a carriage mounted on a guide and free to move along the guide approaching or moving away from the first return rollers, a plurality of second return rollers mounted idly on the carriage. The return rollers define a zigzag path for the web material. The dynamic storage device includes a plurality of motorized shafts and each first return roller is mounted by means of two rolling bearings on a respective motorized shaft.

Abstract: In steady control, a shaft control unit (922) adjusts rotation speed of a first support shaft (31) to cause a first roll (R1) to have peripheral speed equal to predetermined conveyance speed by maintaining a sheet storage amount in a storage mechanism (5) in a first storage amount as a reference. In storage amount adjustment control, the shaft control unit (922) accelerates the rotation speed of the first support shaft (31) to increase the peripheral speed of the first roll (R1) higher than the conveyance speed, until the sheet storage amount in the storage mechanism (5) reaches a predetermined second storage amount that is larger than the first storage amount.

Abstract: Method and device (1) for lifting loads (7). An arm (2) that is the load or that supports a load (7) is pivotably connected to a reference. The load results in a torque. At least a part of the counter-torque to result in a system supporting the load is provided by a gas or hydro-pneumatic spring (60).

Abstract: A splicing device includes a drive device configured to cause a pressing surface of a first pressing member and a pressing surface of a second pressing member to reciprocate relatively towards and away from each other through a series of actions and a control device configured to stop temporarily the series of actions of the drive device in a pressing state where the first pressing member and the second pressing member press a first splicing tape and a second splicing tape against a first carrier tape and a second carrier tape through the series of actions of the drive device.

Abstract: A tether compensated unmanned aerial vehicle (UAV) is described. In one embodiment, the UAV includes a winch with a tether to lower an item from the UAV for delivery, a tether compensation mechanism configured to contact the tether as it extends from the winch, and a flight controller to control a flight path of the UAV. The flight controller is also configured to direct the tether compensation mechanism to clamp the tether based on the flight path of the UAV. Further, based on movement identified in the tether using a sensor, a tether response controller can determine a complementary response and direct the tether compensation mechanism to brace the tether against the movement. Thus, the tether compensation mechanism can help stabilize sway or movement in the tether, which can help prevent the tether from undesirable swinging.

Abstract: A rotation velocity adjusting module includes a fixed axle, a rotating component and a rotation velocity adjusting mechanism. The rotating component is pivoted to the fixed axle. The rotation velocity adjusting mechanism includes a driven component, a driving component and a contact component. The driven component is rotatably connected to the rotating component. The driving component and the contact component are disposed on the driven component. When a rotation velocity of the rotating component reaches a threshold value, the driving component drives the driven component to rotate by the change of centrifugal force, so as to switch states of the contact component.

Abstract: A splicer machine for feeding strips of closures or clips. The clips formed of flat plastic material, and for receiving portions of flexible bags. More specifically, the automated handling of strips of such clips, where strips of the clips are held together by interlocking portions of the clips.

Abstract: In a feeding device comprising turret arms having spindle shafts for supporting a web roll, an air brake for applying a braking force in a rotating direction to the spindle shafts, and an accelerating motor for applying a drive force in the rotating direction to the spindle shafts and a braking force in the rotating direction to the spindle shafts, a braking force control device has a tension control device which exercises control such that if a braking force required for the spindle shafts is lower than a constant value, only the braking force from the accelerating motor is supplied to the spindle shafts, and that if the braking force required for the spindle shafts is higher than the constant value, the braking force from the accelerating motor is supplied to the spindle shafts, and the braking force of the air brake is supplied to the spindle shafts.

Abstract: A tension-regulated wire-feeding apparatus, particularly adapted to high speed winding of thin conductor wires upon an electronic component, applies a magnetic particle brake to the wire supply spool in inverse proportion to the pulling tension applied on the wire by the winding mechanism. The brake is controlled by an electric current generated by a controllable power supply. The output of the power supply is modulated by a follower potentiometer coupled to a lever arm which resiliently bear against a segment of wire unwound from the supply spool in order to monitor its pulling tension.

Abstract: An elongate product (BA1) is transported away from its storage device (VT) in such a way that at least one loop (SL) is formed at at least one longitudinal point on its running path (AW2). Changes in the geometric shape of the loop (SL) are registered and used to control or regulate the outward transport movement of the elongate product (BA1).

Abstract: A spool drive (70) for selectively retaining a spool (S) having end flanges (96) with radial ribs (97) and a central contact area (98) about a bore (99) while filamentary material (F) on the spool is payed out under tension having, a spindle (25) adapted to receive the bore in the spool, a magnetic chuck (82) surrounding and rotatable with the spindle, and a positive flange engagement mechanism (85) associated with the magnetic chuck biased into contact with an end flange of the spool and adapted to engage the radial ribs to restrain rotational slippage between the magnetic chuck and the spool.

Abstract: A tension-regulated wire-feeding apparatus, particularly adapted to high speed winding of thin conductor wires upon an electronic component, applies a magnetic particle brake to the wire supply spool in inverse proportion to the pulling tension applied on the wire by the winding mechanism. The brake is controlled by an electric current generated by a controllable power supply. The output of the power supply is modulated by a follower potentiometer coupled to a lever arm which resiliently bear against a segment of wire unwound from the supply spool in order to monitor its pulling tension.

Abstract: A multi-spindle fiber pay-out apparatus is provided that allows for fiber tension control. A frame supports a plurality of spools of fiber, with each spool of fiber being mounted on a spindle. The spindle is in rotational supporting relation to the spool of fiber and is operatively engaged with a magnetic particle brake, which is itself in control communication with an electronic controller. A fiber take-up system is mounted upon the frame in cooperative relation to the spool of fiber and is arranged so as to compensate for changes in the fiber-pay-out rate from the spool of fiber that are caused by activation/deactivation of the magnetic particle brake. A load cell transducer is mounted on the frame adjacent to the fiber take-up system.

Abstract: A multi-spindle fiber pay-out apparatus is provided that allows for fiber tension control. A frame supports a plurality of spools of fiber, with each spool of fiber being mounted on a spindle. The spindle is in rotational supporting relation to the spool of fiber and is operatively engaged with a magnetic particle brake, which is itself in control communication with an electronic controller. A fiber take-up system is mounted upon the frame in cooperative relation to the spool of fiber and is arranged so as to compensate for changes in the fiber pay-out rate from the spool of fiber that are caused by activation/deactivation of the magnetic particle brake. A load cell transducer is mounted on the frame adjacent to the fiber take-up system.

Abstract: This invention relates to a method for use in coiled tubing operations wherein fatigue of the coiled tubing owing to short trips is reduced by reducing the number of bending and straightening events that coiled tubing undergoes to accomplish a particular wellbore objective. The invention relates to a method that allows the coiled tubing reel and tubing reeled thereon to remain stationary while making small movements of coiled tubing using the injector. The invention also relates to a method that permits synchronized movement of coiled tubing between the coiled tubing reel and injector.

Abstract: A strand tension apparatus, including a strand delivery mechanism for controllably delivering a moving strand under tension downstream from a strand supply, a strand take-up mechanism positioned downstream from the strand delivery mechanism for pulling the strand from the strand supply, and a tension controller positioned between the strand delivery mechanism and the strand take-up mechanism for adding tension to the moving strand as it moves downstream from the strand delivery mechanism to the strand take-up mechanism. The tension controller includes a rotating strand feeding device frictionally-engaging the strand and a variable drag force-applying device cooperating with the rotating strand feeding device for adding a predetermined tension to the strand as the strand is delivered downstream from the strand delivery mechanism.

Abstract: A wire tensioning device for maintaining tension on a moving wire, especially a wire that is uncoiled over the axial end of a fixed spool of wire. The tensioning device includes a disk mounted at an axial end of a spool of wire. The disk has a plurality of radially extending resistant filaments that protrude beyond the periphery of the axial end of the spool of wire. The filaments engage the wire as it is unwound from the spool over the axial end thereof to apply a resistance to the uncoiling of the wire. A drive shaft powered by a reversible electric motor connects to the disk which motor rapidly responds to changes in resistance applied to the uncoiling wire by the bending or unbending of the filaments. An arm is engaged by the uncoiling wire. The arm is connected to a rotatably mounted axle for movement in a limited arc. A rotor is formed on the axle with the rotor having a lobe. A pair of proximity switches for operating the reversible electric motor in opposite directions of rotation are provided.

Abstract: A beam let-off apparatus capable of adjusting the tension of a plurality of filaments as they are removed from a beam through the controlled movement of a pivoting arm directed by the tension of the unwinding filaments, comprises a frame, a driven roll, 1-3 idler rolls on the frame and a dancer roll mounted on pivoting arms mounted on the frame wherein the filaments pass under and around the dancer roll through a defined wrap angle is provided.

Abstract: A web tension control and apparatus uses a lightweight dancer and a control system that detects web tension using the dancer position as well as downstream sensors to maintain a relatively constant web tension. The control system also adjusts the braking force to an unwind roll based on the diameter of the roll, allowing for greater web tension control. A two-phase braking system prevents the unwind roll from spilling excess paper into the production line.