Some embodiments include a fabric separator comprising a body, a drum, a gas intake, a sensor, and a clamp. In some embodiments, the drum has an outer surface, is coupled with the body, and has a drum rotatable about an axis. The gas intake may flow gas in a rotational direction of the drum such that a low pressure zone is created on at least a portion of the outer surface of the drum. The sensor may be coupled with the body. The clamp may be in communication with the sensor and coupled with the body. The clamp having an engaged mode where the clamp is pressed against a portion of the drum and a disengaged where the clamp is not pressed against a portion of the drum, the clamp transitions from the engaged mode to the disengaged mode based on a signal from the sensor.

A suction roll of a web, or sheet, of paper, includes a tubular body that rotates about a longitudinal rotation axis. External and internal lateral surfaces of the suction roll pneumatically communicate with each other through suction holes. The roll includes a suction chamber pneumatically connected to a vacuum generation device for generating a predetermined vacuum degree. A vacuum distribution device selectively puts into pneumatic communication the suction chamber with at least one row of suction holes, at determined angular positions of the tubular body and causes the processed sheet or web of paper to be sucked, and to adhere at a corresponding portion of the external lateral surface arranged between a catching point and a releasing point having determined angular positions. A displacement device moves the vacuum distribution device to change the angular position of the catching or releasing point of the web or sheet of paper.

The invention relates to a stacking device (10) for placing sheet-shaped elements (P) in stacks in a forming machine (1), said stacking device (10) comprising: a movable stacking surface (11), and an actuating device (12) for moving stacking surface (11): between a retracted position and a vertical forward position in a reciprocating back-and-forth motion for stacking sheets, and between the retracted position and a stowed position to open an access to the stack of sheet-shaped elements (P), characterized in that the actuator (12) comprises cam means configured to move the stacking surface (11) upwardly in the retracted position, in a raised position to be located above the top of the sheet stack.

The invention also relates to a machine forming sheet-shaped elements comprising at least one such stacking device.

A pull station has top and bottom continuous loops with the top continuous loop disposed on a frame and movable relative to the bottom continuous loop with a frame actuator connected with the frame. The frame actuator has a sensor for sensing position. A stop, adjustable with a stop actuator and having a load sensor, is operatively engageable with the frame and prevents movement of the top continuous loop toward the bottom continuous loop. A control determines a distance between the top and bottom continuous loops based upon the actuator position sensor; determines a force imparted to webs based on the stop load sensor, the weight of the frame and the top continuous loop, and a force imparted to the top continuous loop by the frame actuator as the webs are conveyed in the pull station; and controls the pull station based upon the distance and/or force measurements.

Some embodiments include a fabric separator comprising a body, a cylinder, a gas intake, a sensor, and a clamp. In some embodiments, the cylinder has an outer surface, is coupled with the body, and has a cylinder rotatable about an axis. The gas intake may flow gas in a rotational direction of the cylinder such that a low pressure zone is created on at least a portion of the outer surface of the cylinder. The sensor may be coupled with the body. The clamp may be in communication with the sensor and coupled with the body. The clamp having an engaged mode where the clamp is pressed against a portion of the cylinder and a disengaged where the clamp is not pressed against a portion of the cylinder, the clamp transitions from the engaged mode to the disengaged mode based on a signal from the sensor.

A friction shaft for a slitter has winding tubes disposed on an outer surface thereof to roll unit materials formed by cutting a raw material such as various kinds of paper, fabric, or film with predetermined intervals includes a first rotary shaft, tubes, brake pads, a second rotary shaft, pressing members, first rotary tubes, second rotary tubes, first and second bearings, first elastic members, guide members, second elastic members, and lugs for clamping.

In one example, a festoon system comprises a festoon module having a support assembly, and further comprises at least one upper sheave and at least one lower sheave, which are movable relative to one another by movement of at least one of the upper sheave or the lower sheave. At least one wire is configured to enter the festoon module at an entrance region, extend around a groove of the least one lower sheave and at least one groove of the at least one upper sheave, and then exit the festoon module at an exit region. A first coupling location of the support assembly is adjacent to the entrance region of the festoon module, and a second coupling location of the support assembly is adjacent to the exit region of the festoon module. Different modules are configured to be coupled to the second coupling location.

A telescopic pneumatic linear actuator, particularly for unwinders with movable arms, includes a first annular cylinder, provided with a respective cavity, and a second annular cylinder, which can be inserted into and can slide within the cavity of the first annular cylinder and is provided with a respective cavity. The actuator also includes an annular piston, which can be inserted into and can slide within the cavity of the second annular cylinder. The first and second annular cylinders and the annular piston are provided with respective holes for the passage of a self-expanding spindle.

A friction shaft for a slitter has winding tubes disposed on an outer surface thereof to roll unit materials formed by cutting a raw material such as various kinds of paper, fabric, or film with predetermined intervals includes a first rotary shaft, tubes, brake pads, a second rotary shaft, pressing members, first rotary tubes, second rotary tubes, first and second bearings, first elastic members, guide members, second elastic members, and lugs for clamping.

The present invention relates to a device (20) for winding a longitudinally cut material web having multiple longitudinal strips (12) on a plurality of winding tubes (16) to form in each case a wound roll. The device comprises an axle (24) and, mounted on the axle, a plurality of ring-shaped winding drives (22) that are individually controllable in their operating position. Each winding drive (22) forms an external-rotor electric motor and comprises a static interior tube (40) and a rotatable external tube (50). The external tube (50) that is rotatable on the rolling bearings (48) bears, on its interior, a device for providing an excitation magnetic field (52) that forms the external rotor of the electric motor.