Abstract

Unwinder of a thin ply product wound on a roll, comprising - a first roll-holder assembly equipped with a first unwinding rod for a respective roll, on which the roll is adapted to be supported, and which has an axis of rotation transversal to the direction of movement of the ply unwound from the roll, - a second roll-holder assembly equipped with a second unwinding rod of a respective roll, on which the roll is adapted to be supported, said second rod being parallel to said first unwinding rod of the first roll-holder assembly, said second roll-holder assembly facing said first roll-holder assembly in an unwinding zone, - a ply splicing assembly placed above said first and second facing roll-holder assemblies, - a ply accumulation unit to allow automatic switching between a roll being unwound in one said roll-holder assembly and a spare roll provided in the other roll-holder assembly, - a system for the lateral movement of each of said unwinding rods with respect to said unwinding zone, from said unwinding zone to a loading zone wherein said rolls are outside said winding zone to facilitate loading the rolls into the respective roll-holder assemblies, wherein said splicing assembly can be moved from a working position above the two said roll-holder assemblies in said unwinding zone, to a working position above an extracted roll assembly in the loading zone, to allow preparation for splicing of the leading edge of the ply wound on the spare roll.

IPC Classes  ?

• B65H 23/032 - Controlling transverse register of web
• B65H 19/18 - Attaching, e.g. pasting, the replacement web to the expiring web

Abstract

Unwinder of a thin ply product wound on a roll, of the type with automatic switching of the unwinding roll with a spare roll, said unwinder comprising - a first roll-holder assembly equipped with a first unwinding rod for a respective roll, on which the roll is adapted to be supported, and which has an axis of rotation transversal to the direction of movement of the ply unwound from the roll, - a second roll-holder assembly equipped with a second unwinding rod for a respective roll, on which the roll is adapted to be supported, said second rod being parallel to said first unwinding rod of the first roll-holder assembly, said second roll-holder assembly facing said first roll-holder assembly in an unwinding zone, wherein of said two roll-holder assemblies, one assembly holds the unwinding roll and the other assembly holds the spare roll to be switched, - a ply splicing assembly placed above said first and second facing roll-holder assemblies, - a ply accumulation unit to allow automatic switching between a roll being unwound in one said roll-holder assembly and a spare roll provided in the other roll-holder assembly, - a transversal position correction system for the side edges of the plies on the rolls present in said roll-holder assemblies.

IPC Classes  ?

• B65H 23/032 - Controlling transverse register of web
• B65H 19/18 - Attaching, e.g. pasting, the replacement web to the expiring web

Abstract

A supporting structure (10a-10d) for bulky industrial machinery, i.e. apparatus for the temporary accumulation of products (21) arranged between un upstream section (22) and a downstream section (35) of a production line, has the peculiarity of being expandible, advantageously thanks to a telescopic structure (12a-12d), by hand or motor driven expansion means (36), directly arranged onboard the machinery. The present structure allows a sensible reduction of the overall plant dimensions of the machinery and, moreover, it allows easy and fast transport and assembly operations.

IPC Classes  ?

• B65G 21/14 - Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors movable, or having interchangeable or relatively- movable partsDevices for moving framework or parts thereof to allow adjustment of length or configuration of load-carrier or traction element
• B65G 47/51 - Devices for discharging articles or materials from conveyors with distribution, e.g. automatically, to desired points according to unprogrammed signals, e.g. influenced by supply situation at destination

Abstract

An apparatus (10) for temporary accumulation arranged between a section (62) upstream and a section (66) downstream of a production line includes a structure (11) that supports deflection elements (16, 18, 19,20) of closed cycle flexible motion transmission means (14, 15) which themselves support product containers (32), of the production line shifted between a loading station(63) and an unloading station (65). The presence of two sets of mobile axis deflection elements (18, 22; 20, 24) connected on the path of the transmission means (14, 15) by flexible and alternating connecting elements to fixed axis deflection elements (16, 21; 19, 23) to which the motion is transmitted by appropriate actuators (30, 31), allows for the implementation of an extremely simple and functional apparatus. The double motorization of the transmission means of the movement result in loading and the unloading operations completely independent one from each other.

IPC Classes  ?

• B65G 47/51 - Devices for discharging articles or materials from conveyors with distribution, e.g. automatically, to desired points according to unprogrammed signals, e.g. influenced by supply situation at destination

Abstract

In a conveying and/or accumulating apparatus including chain deflection wheels or other flexible elements apt to support and transmit the motion to product containers suspended at their ends to said chains, the paths followed by the chains and/or the conformation of the anchoring means of the containers to the chains themselves are such that they do not obstruct at the loading and/or unloading stations of the product the necessary space for the passage of the products in direction of the longitudinal axis of said containers, thus allowing for loading and unloading operations in said direction. The apparatus guarantees for many types of products particularly reliable and fast loading and unloading operations permitting to optimize the layout of the production lines.

IPC Classes  ?

• B65G 47/51 - Devices for discharging articles or materials from conveyors with distribution, e.g. automatically, to desired points according to unprogrammed signals, e.g. influenced by supply situation at destination