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: 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: 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: The invention relates to a guide column with a double ejection mechanism of plates acting simultaneously as a guide column for the ejector plates and as a mechanism for the movement of the two sets of ejector plates in two sequenced movements.

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: The invention relates to a sealed bearing which comprises a body with a general cylindrical configuration for its assembly in the housing of a mold or support body, and has a cylindrical inner hole for the assembly and balancing of the tight movement of a rotary shaft or core pin provided with internal cooling. The body has: an inner channel for the assembly of a dual-effect rotary seal activated by a first O-ring seal; an outer channel for the assembly of a second O-ring seal for the static sealing of the bearing in the housing of a mold or support part; and, at one of its ends, a head with peripheral planes and threaded holes for its grip and extraction from the housing of the mold or support part.

Abstract: A numbering apparatus incorporates a push rod which is pushed mechanically by an ejector plate or other mechanism of an injection mold in each injection process. The push rod moves, in a linear direction, a link attached to a central cylinder which turns inside wheels having, on their outer face, marking digits. The wheels have an inner toothing, on which pressure is exerted by a comb, made up of comb teeth, that protrude externally from the central cylinder in order to change the position of the wheel in the forward direction of the central cylinder. The digit displayed, while also incorporating magnets, matching up with the outer face of the wheel which assist in securing the position of the comb, thereby preventing the wheel from turning while the cylinder is sliding back.

Abstract: Having a body that forms the marking insert body. This body has a central opening into which the marking case will be inserted and a ring being set out externally on the side to be inserted into the mould, on which different motifs to be transferred to the moulded body, will be engraved. Internally it has a nut secured by means of a spring to the closing end-cap, the shaft of the marking unit screwing into said nut, the spring staying in tension while in use, and retaining the marking insert from a possible withdrawal.

Abstract: The numbering machine comprises a series of cams (2) and a series of wheels (3), each cam (2) being connected with a wheel (3), so that the turning of a cam (2) signifies the turning of a wheel (3). The cams (2) have on their periphery nine projections (17) and a recess or hollow (18), while each wheel (3) has on its periphery the digits corresponding to the first nine numbers.