Patent classifications
B29C45/20
Method and device for producing a tube from thermoplastic synthetic material via injection moulding
The invention relates to a method for producing a tubular component as an article from a thermoplastic synthetic material while using an injection-molding device having a tool that forms an article cavity, having means for filling the article cavity with a thermoplastic molding compound, and having an injection device for injecting a fluid into the article cavity, wherein the injection device comprises a nozzle body, wherein the method provides that the nozzle body is used as a mold core for molding the shape of an end of the article, that the nozzle body is used as a carrier for an additional component to be incorporated into the article, wherein: a) the nozzle body first equipped with the additional component, b) the nozzle body is introduced into the closed article cavity, or the tool is closed around the nozzle body, c) the article cavity in a further method step is at least partially filled with the thermoplastic molding compound, d) a pressurized fluid is then induced into the article cavity by means of the injection device, wherein part of the molding compound is displaced into a secondary cavity, and e) the article is de-molded. The invention furthermore relates to an injection-molding device for carrying out the method.
Method and device for producing a tube from thermoplastic synthetic material via injection moulding
The invention relates to a method for producing a tubular component as an article from a thermoplastic synthetic material while using an injection-molding device having a tool that forms an article cavity, having means for filling the article cavity with a thermoplastic molding compound, and having an injection device for injecting a fluid into the article cavity, wherein the injection device comprises a nozzle body, wherein the method provides that the nozzle body is used as a mold core for molding the shape of an end of the article, that the nozzle body is used as a carrier for an additional component to be incorporated into the article, wherein: a) the nozzle body first equipped with the additional component, b) the nozzle body is introduced into the closed article cavity, or the tool is closed around the nozzle body, c) the article cavity in a further method step is at least partially filled with the thermoplastic molding compound, d) a pressurized fluid is then induced into the article cavity by means of the injection device, wherein part of the molding compound is displaced into a secondary cavity, and e) the article is de-molded. The invention furthermore relates to an injection-molding device for carrying out the method.
Method for producing a shoe
The invention relates to a method for producing a shoe (1), comprising a shoe sole (2) and an upper (3). In order to provide an optimally fitting shoe in a simple manner, the method comprises the following steps according to the invention: a) providing a casting mould (4) for forming at least part of the shoe sole (2), the casting mould (4) having a bottom region (5), which lies vertically at the bottom, and having a side region (6), the side region (6) forming a side wall of the casting mould cavity (7) and initially being open in the end region lying vertically at the top; b) injecting a first liquid plastic material into a first surface section (8) of the bottom region (5) of the casting mould (4) and at least injecting a second liquid plastic material into a second surface section (9) of the bottom region (5) of the casting mould (4), the two plastic materials being different, the injection of the liquid plastic material being accomplished by means of at least one nozzle (10), by means of which the plastic material is sprayed in a free jet into the surface section (8, 9) in question; c) closing the casting mould (4) by means of a cover region (11) lying vertically at the top, which cover region (1) is placed onto the side region (6) of the casting mould (4), and allowing the plastic materials to harden; d) opening of the casting mould (4) and removing the produced moulded part.
Method for producing a shoe
The invention relates to a method for producing a shoe (1), comprising a shoe sole (2) and an upper (3). In order to provide an optimally fitting shoe in a simple manner, the method comprises the following steps according to the invention: a) providing a casting mould (4) for forming at least part of the shoe sole (2), the casting mould (4) having a bottom region (5), which lies vertically at the bottom, and having a side region (6), the side region (6) forming a side wall of the casting mould cavity (7) and initially being open in the end region lying vertically at the top; b) injecting a first liquid plastic material into a first surface section (8) of the bottom region (5) of the casting mould (4) and at least injecting a second liquid plastic material into a second surface section (9) of the bottom region (5) of the casting mould (4), the two plastic materials being different, the injection of the liquid plastic material being accomplished by means of at least one nozzle (10), by means of which the plastic material is sprayed in a free jet into the surface section (8, 9) in question; c) closing the casting mould (4) by means of a cover region (11) lying vertically at the top, which cover region (1) is placed onto the side region (6) of the casting mould (4), and allowing the plastic materials to harden; d) opening of the casting mould (4) and removing the produced moulded part.
Nasal impression assembly and method of measuring/imprinting the nasal impression
A nasal impression assembly for use in prosthodontics and otolaryngology, wherein the assembly includes detachable components specifically designed for recording precise nasal impressions. The detachable components may include plurality of nasal cones, a pair of injection syringes, and an extra nasal mesh splint, assembled on a horizontal bar. Further a method is provided for measuring/imprinting the impression, by using the assembly, wherein an impression material is brought in contact with extra-nasal and/or intra-nasal structure to imprint its size and/or shape.
Nasal impression assembly and method of measuring/imprinting the nasal impression
A nasal impression assembly for use in prosthodontics and otolaryngology, wherein the assembly includes detachable components specifically designed for recording precise nasal impressions. The detachable components may include plurality of nasal cones, a pair of injection syringes, and an extra nasal mesh splint, assembled on a horizontal bar. Further a method is provided for measuring/imprinting the impression, by using the assembly, wherein an impression material is brought in contact with extra-nasal and/or intra-nasal structure to imprint its size and/or shape.
CONTROL DEVICE AND CONTROL METHOD FOR INJECTION MOLDING MACHINE
A control device for an injection molding machine is equipped with a pressure acquisition unit configured to acquire a resin pressure, a pressure reduction control unit configured to, after the screw has reached a predetermined metering position, reduce the resin pressure to a target pressure by performing at least one of reverse rotation and sucking back of the screw, and a standby pressure control unit configured to, after the resin pressure has reached the target pressure, keep the resin pressure within a predetermined range by causing the screw to be rotated in a state in which a position of the screw in an axial direction of the cylinder is maintained.
CONTROL DEVICE AND CONTROL METHOD FOR INJECTION MOLDING MACHINE
A control device for an injection molding machine is equipped with a pressure acquisition unit configured to acquire a resin pressure, a pressure reduction control unit configured to, after the screw has reached a predetermined metering position, reduce the resin pressure to a target pressure by performing at least one of reverse rotation and sucking back of the screw, and a standby pressure control unit configured to, after the resin pressure has reached the target pressure, keep the resin pressure within a predetermined range by causing the screw to be rotated in a state in which a position of the screw in an axial direction of the cylinder is maintained.
METHOD AND APPARATUS FOR MANUFACTURING A CUFFED MEDICAL DEVICE
A medical airway device having a cuff is manufactured by loading an injection molding apparatus with a thermosetting elastomeric material and shaping the cuff by injecting the material into an associated injection mold. The injection mold includes a sprue bush having a sprue passage in fluid communication with a mold cavity. The injection molding apparatus includes an injection nozzle that is positioned in contact with, or in close proximity to, the sprue bush. The thermosetting elastomeric material is discharged from the injection nozzle through the sprue passage and into the mold cavity. The cuff is formed by curing the thermosetting elastomeric material within the mold cavity and at the same time preventing premature curing of residual thermosetting elastomeric material within the injection nozzle by applying heat to the material within the mold cavity while cooling the injection nozzle with cooling fluid. The formed cuff is attachable to an airway tube.
METHOD AND APPARATUS FOR MANUFACTURING A CUFFED MEDICAL DEVICE
A medical airway device having a cuff is manufactured by loading an injection molding apparatus with a thermosetting elastomeric material and shaping the cuff by injecting the material into an associated injection mold. The injection mold includes a sprue bush having a sprue passage in fluid communication with a mold cavity. The injection molding apparatus includes an injection nozzle that is positioned in contact with, or in close proximity to, the sprue bush. The thermosetting elastomeric material is discharged from the injection nozzle through the sprue passage and into the mold cavity. The cuff is formed by curing the thermosetting elastomeric material within the mold cavity and at the same time preventing premature curing of residual thermosetting elastomeric material within the injection nozzle by applying heat to the material within the mold cavity while cooling the injection nozzle with cooling fluid. The formed cuff is attachable to an airway tube.