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.

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.

A tape lamination head for applying composite tape onto a mold or mandrel amid the formation of a composite workpiece. The tape lamination head is but one component of a larger tape lamination machine and assembly. Among its components, the tape lamination head includes a tape supply reel, a backing paper take-up reel, and a tape tension control system. The tape tension control system has a first dancer roller assembly located downstream of the tape supply reel and has a second dancer roller assembly located upstream of the backing paper take-up reel. The first dancer roller assembly can include a first roller, a first guide, a first actuator, a first lock, and a first position sensor. The second dancer roller assembly can include a second roller, a second guide, a second actuator, a second lock, and a second position sensor.

The present invention relates to a web film movement compensating device for a web film movement compensation between continuous forward movement section and intermittent forward movement section comprising two guide rollers (1, 2) rotating freely in stationary positions between a continuous driving device (5) and an intermittent driving device (6), two compensation rollers (3, 4) rotating freely on two respective pivoting arms (7, 8) oscillating about pivot shafts (11, 12), an elastic element (9) connected to one of the pivoting arms to actuate the corresponding compensation roller to move away from the guide rollers, and a movement transmission mechanism including lever arms and transmission rods (13, 14, 15) transmitting an oscillating movement from one of the pivoting arms (7, 8) to the other. A web film (50) moved by the driving devices is supported on the guide rollers (1, 2) and on the compensation rollers (3, 4) forming a meander.

The present invention relates to a web film movement compensating device for a web film movement compensation between continuous forward movement section and intermittent forward movement section comprising two guide rollers (1, 2) rotating freely in stationary positions between a continuous driving device (5) and an intermittent driving device (6), two compensation rollers (3, 4) rotating freely on two respective pivoting arms (7, 8) oscillating about pivot shafts (11, 12), an elastic element (9) connected to one of the pivoting arms to actuate the corresponding compensation roller to move away from the guide rollers, and a movement transmission mechanism including lever arms and transmission rods (13, 14, 15) transmitting an oscillating movement from one of the pivoting arms (7, 8) to the other. A web film (50) moved by the driving devices is supported on the guide rollers (1, 2) and on the compensation rollers (3, 4) forming a meander.

Described is a device for feeding and accumulating film (2) made of plastic material wound on a reel to a bagging machine (4), comprising a frame (9), means for supporting at least one reel (3) of film (2) made of plastic material supported by the frame (9), a first and a second group (G1, G2) of rollers for redirecting the film (2) made of plastic material, the rollers of the first and second group (G1, G2) being arranged in two respective rows parallel to each other, the film (2) being designed to be wound alternatively on the rollers of the two groups (G1, G2) forming a plurality of loops.

Described is a device for feeding and accumulating film (2) made of plastic material wound on a reel to a bagging machine (4), comprising a frame (9), means for supporting at least one reel (3) of film (2) made of plastic material supported by the frame (9), a first and a second group (G1, G2) of rollers for redirecting the film (2) made of plastic material, the rollers of the first and second group (G1, G2) being arranged in two respective rows parallel to each other, the film (2) being designed to be wound alternatively on the rollers of the two groups (G1, G2) forming a plurality of loops.

Various apparatus embodiments include first, second, third and fourth shafts, and further include a first movable shaft having a first movable axis that is movable between a first axis position and a second axis position, and a second movable shaft having a second movable axis that is movable between a third axis position and fourth axis position. At least one linkage connects the first movable shaft to the second movable shaft. A motor linkage connects the at least one linkage to at least one motor for providing simultaneous movement of the first and second movable shafts.

Various apparatus embodiments include first, second, third and fourth shafts, and further include a first movable shaft having a first movable axis that is movable between a first axis position and a second axis position, and a second movable shaft having a second movable axis that is movable between a third axis position and fourth axis position. At least one linkage connects the first movable shaft to the second movable shaft. A motor linkage connects the at least one linkage to at least one motor for providing simultaneous movement of the first and second movable shafts.

Disclosed is a floor decoration tile manufacturing system for automatic storage and supply and automatic air duct type control of temperature, the floor decoration tile manufacturing system including: a raw material supply unit configured to store a raw material for forming a lower sheet and a middle sheet; a lower sheet supply unit configured to form and supply the lower sheet; a middle sheet supply unit configured to supply the middle sheet bonded onto the lower sheet; a main roller configured to bond the lower sheet and the middle sheet, which have been supplied; a first sheet supply unit configured to supply a print sheet having a color or a pattern to the main roller; a second sheet supply unit configured to supply a transparent sheet, which is bonded onto the print sheet, to the main roller; and a control unit configured to control a tile manufacturing process through pressing the main roller by controlling the driving speeds of the raw material supply unit, the lower sheet supply unit, and the middle sheet supply unit and rotation of the main roller such that the print sheet and the transparent sheet which have been supplied to the upper side, to which the lower sheet and the middle sheet are bonded, are sequentially pressed, wherein the control unit controls the heating temperatures for the raw material, the lower sheet, the middle sheet, and the tile manufacturing sections.