Abstract: The present invention relates to a spacer for high pressure mixing head comprising a control cylinder flange, a head body flange, and a plurality of uprights adapted to interconnect the control cylinder flange and the head body flange. At least one of the plurality of uprights comprises at least one deformation detection sensor applied at at least one available deformation surface thereof and adapted to detect longitudinal deformations and/or transversal deformations of the at least one of the plurality of uprights. The present invention also relates to a related mixing and dosing head and to a related apparatus.

Abstract: A device for mixing at high-pressure two or more reactive liquid components or resins includes a head-body provided with a mixing chamber with inlet and outlet openings for the injecting and recirculating reactive components; a single-piece tubular element, for delivering the mixture; a valve member with longitudinal recirculation slots; the tubular element is removably inserted into a pass-through hole of the head-body, having annular shoulder zone, separated and distant from the transversal hole; fixing elements removably lock the annular shoulder zone at the head-body for holding the tubular element in the aforesaid hole; a clearance gap between the tubular element and the pass-through hole of the head-body is provided such that the forces are exchanged through the annular shoulder zone; sealing and centering elements avoid leakages of polymeric mixture. Deformation-detecting elements detect the deformation conditions which the tubular element is subjected.

Abstract: A method for obtaining and applying a sealing gasket element on a slide-valve sliding in a cavity of an apparatus for the recirculation and mixing of chemically reactive polymeric components, comprises the steps of: obtaining from an elastic-plastic material a precursor element of the seal element, with a grid structure having a reticular shape; positioning the precursor element around the slide-valve; exerting on the precursor element, through temporary clamping elements, a radial compression and contraction action to insert it and couple it to one or more housing seats provided on the slide-valve so as to obtain the seal element well coupled to the latter; progressively removing the clamping elements to sequentially release successive parts of the gasket element and gradually free the slide-valve to gradually introduce the parts of the slide-valve—freed in succession—in the housing cavity allowing the sealing gasket element to gradually expand radially due to the elastic return by adhering tightly to the in

Abstract: A high-pressure mixing device adapted to form a polymeric mixture from the reaction of two or more reactive liquid components or resins, comprises a head-body with a mixing chamber having an inner cylindrical surface with inlet and outlet openings for injecting and recirculating reactive components; a duct for delivering the mixture, a valve body with recirculation longitudinal slots; the delivery duct, of the self-cleaning type, is a single-piece tubular element, insertable into a hole passing through the head-body, having an intermediate transversal hole aligned with the mixing chamber with a diameter greater than a diameter of the mixing chamber for avoiding protrusions of the walls of the transversal hole from forming inwardly of the mixing chamber of the head-body. Sealing elements duly arranged between the coupling interfaces of the various components prevent the leakage of polymeric mixture and lubricant liquid. There is also disclosed a related method.

Abstract: Apparatus for performing operations on semi-finished devices for producing disposable cartridges for electronic cigarettes includes: a guide having a branch extending along a forming direction, and having a longitudinal plane; carriages movable along the guide, each guide includes a retaining element to retain a semi-finished device during operations thereon; a drive system for advancing the carriages along the guide; and operating stations spaced from each other along the forming direction, each having an operating arrangement for performing operations on the semi-finished devices carried by the retaining elements applying stresses on the semi-finished devices; wherein: the retaining element is arranged laterally relative to the longitudinal plane, the apparatus includes a stationary support located at the operating stations, and each of the carriages includes a contrast element cooperating with the stationary support and arranged to transfer stresses applied by the operating arrangement on the semi-finished

Abstract: A device for mixing at high-pressure two or more reactive liquid components or resins comprises a head-body provided with a mixing chamber with inlet and outlet openings for the injecting and recirculating reactive components; a single-piece tubular element, for delivering the mixture, communicates, through an intermediate transversal hole with the mixing chamber and slidingly houses a cleaning member; a valve member with longitudinal recirculation slots slides in the mixing chamber between a backward position, in which the inlet openings are released, and an advanced position, in which the inlet openings are put in communication with the respective outlet openings for recirculating the respective reactive components; the tubular element is removably inserted into a pass-through hole of the head-body, transversal to the mixing chamber, and it has an annular shoulder zone, separated and distant from the transversal hole; fixing elements removably lock the annular shoulder zone at the head-body for holding the

Abstract: A high-pressure mixing device adapted to form a polymeric mixture from the reaction of two or more reactive liquid components or resins, comprises a head-body provided with a mixing chamber having an inner cylindrical surface with inlet and outlet openings for injecting and recirculating reactive components; a duct for delivering the mixture, communicating with the mixing chamber; a valve body with recirculation longitudinal slots, sliding into the mixing chamber between a backward position in which it clears the inlet openings and enables to mix components, and an advanced position, in which the slots put inlet openings in communication with outlet openings for recirculating the reactive components; the delivery duct, of the self-cleaning type, is a single-piece tubular element, removably fastened—by means of fixing members—and can be inserted into a hole transversal to the mixing chamber passing through the head-body; the tubular element has an intermediate transversal hole aligned with the mixing chamber w

Abstract: A method for obtaining and applying a sealing gasket element on a slide-valve sliding in a cavity of an apparatus for the recirculation and mixing of chemically reactive polymeric components, comprises the steps of: obtaining from an elastic-plastic material a precursor element of the seal element, with a grid structure having a reticular shape; positioning the precursor element around the slide-valve; exerting on the precursor element, through temporary clamping elements, a radial compression and contraction action to insert it and couple it to one or more housing seats provided on the slide-valve so as to obtain the seal element well coupled to the latter; progressively removing the clamping elements to sequentially release successive parts of the gasket element and gradually free the slide-valve to gradually introduce the parts of the slide-valve—freed in succession—in the housing cavity allowing the sealing gasket element to gradually expand radially due to the elastic return by adhering tightly to the in

Abstract: At least one transverse blade (19) is mounted on one end of the body of the pressing device (12) which cyclically acts on the packaging film (1) so as to fix it to an underlying tearing strip (7) which is directed towards the film with an adhesive surface and is supported by a conveyor belt (3), said blade (19) cutting and dividing up to the required dimension the said tearing strip from the continuous tape from which the strip itself is obtained, while the said belt acts as a cutter counter-piece. Auxiliary blades (21, 121) are also mounted laterally and parallel on one end of the body of the pressing device, said blades (21, 121), during the active working phase of the said pressing device, interfering with the edge of the packaging film in order to form, on the latter, incisions located on the sides of the front gripping end of the tearing strip, in order to facilitate tearing of the packaging when the said strip (7) is operated.