Abstract: A compact electrical motor (10) especially suitable for being used for applications that do not require a constant revolution speed and a precise position control comprising a rotor (24), a stator (26), at least one electrical winding (28) and at least one further electrical winding (30) arranged coaxially to said stator (26), a shaft (18) whereto the rotor (24) is fixed, with said motor powered in alternating current, with constant number of revolutions and frequency synchronized.

Abstract: A linear motion device (10) associated to a worm (14) including a body (12) internally provided with a housing seat for partially receiving a worm having a plurality of grooves, a mobile device (52) for temporary engagement in an exposed portion of at least one of the grooves (54) of the worm, and a pressure device (40) including a pneumatic piston for moving the mobile device in contact with at least one of the grooves of the worm.

Abstract: A support for linear motion may be especially combined with cutting units or groups of machine tools for the continuous cutting of laminar materials such as films, paper, plastic, fabric films, and the like. The support is connected to a beam or sliding guide of the machine tools, and the support includes a shaped metal block having a first seat and a second seat. A brake is placed in the first seat, and a sliding device is housed in the second seat, with the sliding device being constituted by at least a ball monorail guidance system connected to a shaped sliding track fastened to the beam or sliding guide.

Abstract: A linear motion device (10) associated to a worm (14) comprising a box-shaped body (12) internally provided with a housing seat and a partial delimitation of said worm (14) and temporary engagement mobile means (52) in at least one of the grooves (54) of the same worm along the part getting out of said seat.

Abstract: A cart (10) for cutting units, especially suitable to be applied to apparatuses for shearing paper, comprises a couple of plate-shaped elements (12, 14), approachable to or removable from one another along the longitudinal axis, and connectable by screws (32, 42 ') to one another.Such plate-shaped elements have a complementary configuration in the respective front portion (18, 34). Couples of screws (42'), which pass through cavities (28) obtained in a plate-shaped element (12), fit in threaded holes (42) obtained on the other plate-shaped element (14), preventing the misalignment of cart (10).

Abstract: An apparatus suitable to perform the transverse cutting of various materials, especially, but not exclusively, in the form of ribbons, such as, for instance, aluminium films, paper, fiberglass, plastic films and the like comprises two circular blades, slightly spaced from one another, each blade being suitable to engage with the relevant circular counter-blades; such blades and counterblades being supported by a carriage travelling on a beam and whose traverse is caused by mechanisms, which are also connected to the carriage. These blades, counterblades, carriage and beam are placed transversally and orthogonally with respect to the feed table of the material to be cut.

Abstract: Cutter for material in strip form preferably of paper having a hollow supporting body (20), a blade holder head (12), a shaft (18) equipped with a piston (24) running in the cavity (21) of the supporting body and connected to the blade holder head (12) by an elastically deformable arm (16), a system for controlled rotation of the blade holder head, a system for mounting the blade holder head (12) on the shaft (18) and a case (60) for covering and protection of the blade (14) in the operational phase or the rest phase and fixed to the stem of a piston (62) sliding in a chamber (64) in the bottom of the blade holder head (12).

Abstract: Limit switch for the positioning of cutting machines in a machine for the cutting of plastic and/or paper materials in strips of predetermined width, this cutting unit being slidable on supporting beams, which device includes a source (31) of a ray of light (50) parallel to the supporting beam (24) of the cutting units (12); a tappet (33) of this ray of light; a rotating L-shaped plate (36) hinged in (40) to one side of the base of each cutting unit (12) and maintained in parallel position to said ray of light (50) by a spring (42); an actuating plate (38) fixed in adjustable position to the other side of each cutting unit, in opposite position and aligned with said rotating L-shaped plate (36); and an electronic station driven by the interception of said ray of light (50).

Abstract: Control unit to obtain bidirectional transverse of the cutters in a machine for the parting and/or cutting of a material in sheets, preferably of the paper type, to obtain reciprocal positioning of the knife and counterknife required for cutting. The control unit according to the invention comprises a pneumatic system to drive the machine which once activated, determines the coupling of the support of the knife and counterknife to a worm screw in rotation which causes horizontal bidirectional transverse of the support.

Abstract: An improvement in cutters used in the field of paper manufacturing consisting in that the support-bearing for the knife is connected to a raising and lowering device through a structure elastically deformable and able to impart elastically opposing movements to the knife. These movements are essentially motions of torsion which allow compound movements thereby providing continuous engagement between the knives and the counter knives during rotation. Said elastic structure consists of at least one rectangularly shaped elongated blade formed of steel.

Abstract: Device for the selective or simultaneous traverse of the cutting members in a machine for the chopping and/or cutting of material in sheet, supported by supporting and slip beams, comprising:two bar-formed elements, mechanically interconnected, each parallel to the respective supporting and slip beams;a motor which drives the rotation of at least one of said elements;means of transformation of the rotating movement of the bar-shaped elements in rectilinear traverse movement of each cutting member; andmeans of energization and de-energization of said means of transformation.

Abstract: The present invention is related to an improvement to machines or equipments performing the cutting and/or the creasing of materials in a laminar form, used in different fields. This invention is characterized by systems or means including, in association with a bearing structure and at least an operative unit, means to regulate the flow rate of a pressurized fluid, and means to regulate and adjust the sliding guides subject to wear, particularly for torsionally stressed parts. This invention is also related to means suitable to secure good protective conditions and an airtight seal.

Abstract: The device for positioning the blade cutting edge and intermittently lowering the blade cutting edge includes: a fixed structure comprising two chambers and a central moving rod; two pistons with stems, the pistons moving within the chambers. One of the pistons is opposed by a spring. The blade carrier is hinged at the end of the moving rod and is fixed to the piston stem opposed by the spring and slides along the stem of the other piston. Pressurized fluid is introduced into the chambers by a line provided with a first valve. A second valve intermittently varies the pressure applied to the piston opposed by the spring.

Abstract: Improved cutting unit for cutting material in bands into strips comprising a rotating blade and counter-blade, carried on their respective supports and translatable along at least one beam of the framework, in which a single pressurized fluid pipe enables the blade-carrying support to be locked on the beam and simultaneously, the two supports released; or alternatively, the blade-bearing support to be unlocked and simultaneously the counter-blade support connected to the blade-carrying one. The lockings and connections are obtained by means of pneumatic pistons placed laterally and in the lower part of the blade-carrying support. The counter-blade consists of two elements fixed together and separated by a centerpiece.

Abstract: Device for embossing and/or creasing sheet, or roll material, including a fixed structure complete with a central, moving rod and two symmetric, side chambers in which two pistons slide, opposed by elastic means; means to supply a pressurized fluid in the upper part of each chamber; an embossing and/or creasing tool-holder fixed to the free end of the said rod and of the said stems and a system to control, in an approximate and micrometric manner, the degree of approach of the tool to the counter-roller on which the paper material to be treated travels.

Abstract: There is provided an improvement to the lock and/or release systems, associated in structure and operation to the rests of circular blades or creasers, for cutters or creasing machines to be used in the field of paper and cardboard manufacturing, comprising in a structural operative unit, which includes at least a rest co-operating with sliding and traverse means, guides for the traverse of each unit along a bearing beam, each unit comprising at least a circular blade or creaser and additionally including a lowering and lifting device for the blade or creaser and selective lock or release device for said rest on the beam, wherein the lowering and lifting device and lock or release device are coordinated and synchronized in such a way that the lowering and lifting movements coincide with the activation of the lock and, respectively, the release thereof.

Abstract: Improved creasing machine, particularly for use in industry of cardboard articles and packages, comprising a sliding creasing roller and a fixed or stationary counter-roller, wherein the creasing roller is driven by the pistons of pneumatic, hydraulic or fluid-dynamic cylinders having the same axis of translation but different stroke.