Abstract: The dating system for molds comprises a marking element (1) that engraves a determined date; wherein said marking element (1) comprises interchangeable inserts (2) indicating said determined date, said determined date being defined by letters and/or numbers, forming a line. It permits to obtain the advantages of: the reading of the information is much clearer than the traditional date stamps; it requires a minimum space, which allows to adapt it to practically any mold; and it is much more dynamic than traditional daters, as it can provide date information in multiple formats, such as day and month, or week and year number, or combinations thereof.

Abstract: The device for demoulding negatives in thermoplastic injection moulds comprises an ejector (1) provided on one of the ends thereof with a figure insert (2) with a profile complementary to the part that is to be moulded, wherein said ejector (1) comprises an outer tube (11) housing an inner cooling tube (12), which cools said figure insert (2). It allows for a device to be provided for demoulding negatives in thermoplastic injection moulds which enables the part to be obtained to be cooled, the cooling circuit reaching the figure area of the mould.

Abstract: The device for the suction of air in injection molds and the subsequent expulsion of molded pieces has a Venturi ejector connected to a first valve, that when the mold is closed causes the suction of air in a mold cavity, having at least one insert made from porous material through which and by means of a communication duct that defines a suction circuit, and a second valve, that after the solidification of the plastic material, causes the air to be blown towards the at least one insert made of porous material, cleaning the at least one insert made of porous material. The volume of air to be reduced in the second part of the injection cycle with the same empirical value of 90% efficiency of the Venturi ejector.

Abstract: A device for demolding parts includes a slider for housing a figure insert for the molding of a negative of the part to be molded. The slider is associated with a push rod, which can move the slider to an ejection position of a part to be molded. The device also includes a gas cylinder for driving the displacement of the push rod. The device eliminates an inclined guide and a safety wedge, saving a great deal of work and focusing all the machining only on a punch plate.

Abstract: A device for demolding negatives in thermoplastic injection molds includes an ejector which comprises an ejector profile for the fastening thereof to an ejector plate and a figure insert with a profile that is complementary to a piece to be molded. The ejector further comprises a flexible element arranged between the ejector profile and the figure insert which pushes the figure insert in order to demold the negative by an angular displacement and stretches the figure insert so as to return the ejector to the injection position thereof. The device eliminates the need for molding sliders which are costly as well as the need for a machining process for the installation thereof.

Abstract: Sole for footwear that includes configurations that improve the cushioning in a user's tread with respect to known soles, comprising a lower layer and a side wall, the lower layer comprising a front part, a middle part and a rear part; in at least one portion of the front or rear part of the lower layer there are at least two protrusions, each arranged and extended transversely to the longitudinal axis of the sole and each of them comprising a first segment in contact with the lower tread and a second segment; between the side ends of each protrusion and the side wall there is a first separation that allows the full bending of each protrusion, the second segment being inclined with respect to the first segment; between two adjacent protrusions there is a second separation so that the second segment rests at least partly on the adjacent protrusion.

Abstract: In a sample—reagent mix for polymerase chain reaction (PCR), forward primers are attached to superparamagnetic beads. During a part of a cycle of PCR, beads with bound amplicons are attracted to an electromagnet coil. Electrodeless, wireless detection of PCR and nucleic acid quantitation are achieved in real time by placing the beads in the ac electromagnetic field of the same, and/or another, coil and measuring, with one or both coils, cycle-by-cycle changes in the electrical conductivity and/or the complex permittivity of the aggregate of beads, amplicons, and the interspersed reaction mix. After the cycle's measurement is complete, the beads are redispersed within the reaction mix by coordinated action of the first coil and a third coil.

Abstract: The invention relates to a mould for producing soles of footwear, and to the sole produced by said mould, which includes a moulding surface consisting of a plurality of recesses and projections forming protuberances, inside the sole, that compress and bend during the footstep, where the projections are inclined in relation to the surface of the footstep, said projections being designed and separated such that they are formed only by moulding, since it is not possible to insert a machining tool in the separation between said projections nor is it possible to machine the recesses between the projections.

Abstract: The present invention relates to a device for demolding parts, comprising a skid (1) comprising a slide (8) for housing a shaping insert (2) for molding a negative (10) of the part to be molded, said slide (8) being obliquely associated with a pushrod (9) which can move said slide (8) to an ejection position for ejecting a part to be molded, and characterized in that said pushrod (9) comprises at the upper end thereof a rack (21) meshing with another rack (22) of said slide (8), the movement of said pushrod (9) being transferred to said slide (8) through said racks (21, 22). The invention allows reducing the volume with respect to the device described in the aforementioned document, such that it does not take up too much space when being assembled inside the shape of the mold.

Abstract: A plastic injection mold which allows extracting the air from inside it during the injection process, and an extraction method, where the mold includes closing means, one or more injection cavities provided with at least one injection nozzle for introducing the hot material in a liquid state and at least one ejector device formed by a housing for an ejector pin responsible for extracting the part already molded, where an air duct connected to a vacuum pump or a suction device intercepts the housings of the ejector pins causing a suction of the air from inside the mold.

Abstract: Valve and method for using it to insert a gas and punch orifices in plastic in molds used for making hollow footwear soles. The valve is linearly actuated, includes a helical spring and a stop such that the valve body head seals against a seat in the valve casing. Its configuration is thus simple, inexpensive and reliable, while the method is efficient as it is performed during the processing cycle of the plastic.

Abstract: A device for demoulding pieces in a mould comprises a skid comprising a slider for housing a figure insert for moulding of a negative of the piece to be moulded, said slider being associated with a pushrod that can move said slider to an ejection position of a piece to be moulded pushing at least one ejection plate, and it is characterized in that said pushrod is placed substantially perpendicular with respect to said at least one ejection plate. Due to this substantially vertical arrangement of the pushrod the construction of the mould is simplified, minimizing the width needed for placing the device inside the mould.

Abstract: A slide, like those used in injection moulds, includes a closure unit with a first complementary profile complementary with the second complementary profile of a slide body, the complementary profiles being double wedge-shaped, where the double wedge has oblique end surfaces determining a fixed positioning and locked position between the closure unit and the slide body, such that the slide body includes a rail in the lower base coupleable to a slide guide on which the slide body slides.

Abstract: An apparatus and method for the production of bi-material hollow bodies by injection overmolding. The apparatus includes: n base molding cavities or groups of base molding cavities inserted between n+1 overmolding cavities or groups of overmolding cavities or vice versa; and 2n cores or groups of cores which are fixed to a core holder plate mounted such that it can move in a transverse direction on a base plate that is actuated to move in a longitudinal direction in order alternately to insert each core into one of the base molding cavities, so as to mold a first layer, and into one of the overmolding cavities, so as to overmold a second layer. The apparatus also includes an ejecting device for ejecting the finished bi-material hollow bodies and a valve for alternately distributing the molding material to one or the other of the outer cavities.

Abstract: The present invention consists in an injection method in which a material is injected which serves as the connection between the upper and the sole of the shoe, the mould used for this purpose and the shoe thus obtained in such a manner that the membranes of the breathable type incorporated in said shoe are not damaged.

Abstract: A plastic injection mold which allows extracting the air from inside it during the injection process, and an extraction method, where the mold includes closing means, one or more injection cavities provided with at least one injection nozzle for introducing the hot material in a liquid state and at least one ejector device formed by a housing for an ejector pin responsible for extracting the part already molded, where an air duct connected to a vacuum pump or a suction device intercepts the housings of the ejector pins causing a suction of the air from inside the mold.

Abstract: The invention relates to a slide mechanism comprising an ejector shaft (2) with a first end portion (2c) attached to a mobile ejector plate (3), a second conical end portion (2a) which ends in a protrusion (2b) coupled to a cam (6), the protrusion (2b) acting as a rotation shaft on which the cam (6) can oscillate; a wedge-shaped slide (5) with a molding portion (5d), an inclined segment (5a) between a push surface (5b) which is in contact with the part to be obtained (10) and a base segment (5c) and a sliding passage (14) which extends through the slide (5) in which at least one portion of the cam (6) slides in parallel with the negative (11a); a fixed sliding support (4) with an axial passage (4a) through which the ejector shaft (2) axially slides, and a slope (4c) on which the inclined segment (5a) of the slide (5) shifts, with a complementary inclination to that of the inclined segment (5a) of the slide.

Abstract: Valve and method for using it to insert a gas and punch orifices in plastic in moulds used for making hollow footwear soles. The valve is linearly actuated, includes a helical spring and a stop such that the valve body head seals against a seat in the valve casing. Its configuration is thus simple, inexpensive and reliable, while the method is efficient as it is performed during the processing cycle of the plastic.

Abstract: Footwear sole comprising a top half with hollow vertical configurations and a bottom half, wherein said configurations are filled to at least half of their volume with a shock-absorbing plastic material to absorb as great a range of possible loads with a simple and easily adjustable configuration.

Abstract: The present invention relates to flexible footwear that comprises flexing means, either in the sole or in the upper, or in both, and said means in turn comprise a groove placed transversely and 5 recovering means placed transversely to said groove such that, when the footwear flexes along the groove, the action of said recovery means cause the footwear to recover, promoting recovery of the initial form of the footwear upon completion of each step, and thereby enhancing walking comfort.