A rotary welding device which includes a rotary part rotating about its axis of rotation, one or more supporting elements for supporting a continuous strip, specifically a strip of nappies, supported by the rotary part, and a plurality of welding units, mounted on the rotary part, for welding the continuous strip; each welding unit is configured to pass from a non-operating position to an operating position and vice versa; each welding unit includes a respective welding tip and a respective anvil element which is movable relative to the welding tip; each welding unit includes respective first movement means configured to drive the anvil element in rotation relative to the welding tip from an initial position, where the anvil element is angularly spaced from the welding tip, to a final position, where the surface of the welding tip and the surface of the anvil element are parallel and aligned with each other along the same axis, and vice versa.

A packaging device, particularly for packaging trays containing food products or technical materials in a controlled atmosphere and by means of a film of plastic material, comprising an upper chamber and a lower chamber, which can be fastened by mutually superimposing them and are each provided internally with a plurality of heat-sealing and/or cutting and/or die-cutting elements arranged concentrically, the lower chamber being provided centrally with a plurality of supporting elements for a tray.

A rotary device for welding a continuous web comprises a rotary unit rotating about a respective axis and welding units for welding the web mounted, angularly spaced, on the rotary unit. A movement device varies a radial position of the welding units. First and second supporting elements supporting the web are disposed, respectively, upstream and downstream of respective ones of the welding units, to keep the web tensioned when the respective welding unit is at an operating position. The first and second supporting elements are supported by a load-bearing structure connected to the welding units in such a way that a radial movement of the welding units corresponds to a movement of the first and second supporting elements towards and away from the axis.

A horizontal packaging machine (M) for packaging a product (P) fed in a horizontal direction (X) comprises a cut-sew group (22) for making on a packaging film (F) transverse welds and a cut to close and separate from each other two successive packs (C1, C2, C3, C4), wherein the cut-sew group (22) comprises a plurality of cut and sew tools (U1, U2, U3) for making the transverse welds and the cut, wherein the transverse welds define the edges of the packs (C1, C2, C3, C4) according to different packaging sizes for the product (P), wherein the cut-sew group (22) comprises an upper shaft (AS) and a lower shaft (AI) driven in rotation independently by means of a respective upper motor (MS) and a respective lower motor (MI), in which each shaft (AS, AI) mounts on it the plurality of cut and sew tools (U1, U2, U3) and in which each cut and sew tool (U1, U2, U3) is composed of an upper tool (US) and a corresponding lower tool (U1). In particular, the horizontal packaging machine (M) includes compensation means of the mutual distance (MMV, PE, P1, P2, CT, FL) between the two shafts (AS, AI) with micrometric adjustment of the distance to compensate for thermal expansion and use of packaging film (F) of different thickness.

Improvements relating to wind turbine blade manufacture A method of making wind turbine blades of variable length is described. The method involves forming first and second half shells of a main blade section in a main blade mould assembly. A pre-manufactured tip section is selected from a plurality of tip sections of different lengths according to a total length requirement for the wind turbine blade. The tip section is supported adjacent to the main blade mould assembly such that an inboard end of the tip section overlaps with an outboard end of one of the half shells of the main blade section. The main mould assembly is then closed to bond the two main half shells together and to bond the tip section to the main blade half shells. The invention allows blades of different overall length to be produced using a common main blade mould assembly.

The film sealing and wrapping machine with a rotary cut and seal jaw is provided. The rotary cut and seal jaw has an internal sliding mechanism which provides for smooth and quiet operation. The rotational speed of the jaw may be varied to increase through put and to provide for a title bag around products. The rotary cut and seal jaw may comprise a seal bar and pressure pad may both be spring loaded to self align the seal bar and pressure pad during the sealing and cutting process. Lastly, a gap defined by a belt disposed upstream and downstream of the seal bar and pressure pad may be mechanically linked to the pressure pad through a control carriage.

A method for controlling the operating parameters of a sealing unit of the follower type in a product packing machine, wherein the sealing unit comprises a sealing module movable with reciprocating motion along a feed path of a tubular film to be sealed. The method is implemented in accordance with a plurality of operating parameters and comprises the step of setting the value of at least one input operating parameter selectable at least between sealing time and production speed. The method also comprises the step of calculating the values of the remaining, unselected operating parameters as a function of the set value, where one or more of the remaining operating parameters are subject to restrictions connected with the machine architecture. The method also comprises the step of checking that the values calculated are compatible with respective reference ranges and/or with the restrictions.

A rotary device for welding a continuous web includes a rotary element, support elements for supporting the web, supported by the rotary element, and a plurality of welding units for welding the web. Each welding unit passes from a non-operating position to an operating position and vice versa, and includes a first movement device for commanding a relative rotation of an anvil element relative to a welding tip and a second movement device for moving the anvil element relative to the welding tip such that a contact surface of the anvil element and a contact surface of the welding tip make contact with a portion of the web in a zone between them, and vice versa. First and second drive mechanisms drive the first and second movement devices. The first and second drive mechanisms are configured to vary a positioning of the welding tip relative to the axis.

A manufacturing device is used for manufacturing a package including a resin sheet and a predetermined work wrapped with the resin sheet. The manufacturing device includes: a sealing unit that thermally welds overlapping parts of the sheet; and an inspection device that inspects a sealing quality of the sealed portion thermally welded by the sealing unit. The sealing unit makes, by the thermal welding, a thickness of the sealed portion after the thermal welding smaller than a total thickness of the overlapping parts prior to the thermal welding. The inspection device obtains thickness information on the thickness of the sealed portion and determines the sealing quality of the sealed portion based on the thickness information.

The disclosure relates to a filling machine (1) for filling a package (2) of a web of packaging material with a food product. The filling machine (1) comprises a jaw system (3) adapted to seal the package (2) after being filled with the food product. The jaw system (3) is equipped with means (4) for providing a unique mark (5) on the package (2). The filling machine (1) further comprises a sensor (7) arranged downstream of the jaw system (3) which is adapted to detect the mark (5) on the package (2), and a cutting knife (8) adapted to cut the package (2) from the web of packaging material. The cutting knife (8) is movably arranged in the filling machine (1), such that the cutting knife (8) can be adjusted in relation to the package (2) based on the detected mark (5) before cutting the package (2) from the web of packaging material. The disclosure also relates to a method for filling a package (2) of a web of packaging material with a food product.