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.

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.

In composition of a heating cylinder cover that covers a heating cylinder 2 having a temperature control mechanism 3m in which at least a plurality of heating units 3a, 3b, 3c, . . . are provided on an outer circumferential surface 2ms of a heating cylinder body 2m along an axial direction Fs, the heating cylinder cover includes a heat-retaining cover part 5 that is integrally provided with a cover body part 5m and a plurality of partition parts 5a, 5bc, 5de, . . . ; the cover body part 5m is attached to the heating cylinder 2 thereby forming a predetermined covered space S between the cover body part 5m and the temperature control mechanism 3m and covers at least an upper half part 2u of the heating cylinder 2, and the partition parts 5a, 5bc, 5de, . . . project from an inner surface 5mi of this cover body part 5m toward the temperature control mechanism 3m and divides the covered space S into a plurality of closed spaces Sab, Scd, . . ..

In composition of a heating cylinder cover that covers a heating cylinder 2 having a temperature control mechanism 3m in which at least a plurality of heating units 3a, 3b, 3c, . . . are provided on an outer circumferential surface 2ms of a heating cylinder body 2m along an axial direction Fs, the heating cylinder cover includes a heat-retaining cover part 5 that is integrally provided with a cover body part 5m and a plurality of partition parts 5a, 5bc, 5de, . . . ; the cover body part 5m is attached to the heating cylinder 2 thereby forming a predetermined covered space S between the cover body part 5m and the temperature control mechanism 3m and covers at least an upper half part 2u of the heating cylinder 2, and the partition parts 5a, 5bc, 5de, . . . project from an inner surface 5mi of this cover body part 5m toward the temperature control mechanism 3m and divides the covered space S into a plurality of closed spaces Sab, Scd, . . ..

A material dispense device includes a nozzle portion that dispenses a material, and a main body portion that has a flow path for a material and to which the nozzle portion is attached. The main body portion includes a body portion having an outlet of the flow path, and a male screw provided at an outer periphery of the body portion. The nozzle portion has a dispense opening at a front end of an in-nozzle flow path for the material, and includes a nozzle tip that is pressed against the body portion in an arrangement of communicating with the flow path. The nozzle portion further includes a pressing member that presses the nozzle tip against the body portion in a state in which the dispense opening is exposed to the outside. The pressing member includes a female screw at an inner periphery thereof. By fastening the female screw of the pressing member to the male screw of the body portion, the nozzle tip is pressed against the body portion.

A material dispense device includes a nozzle portion that dispenses a material, and a main body portion that has a flow path for a material and to which the nozzle portion is attached. The main body portion includes a body portion having an outlet of the flow path, and a male screw provided at an outer periphery of the body portion. The nozzle portion has a dispense opening at a front end of an in-nozzle flow path for the material, and includes a nozzle tip that is pressed against the body portion in an arrangement of communicating with the flow path. The nozzle portion further includes a pressing member that presses the nozzle tip against the body portion in a state in which the dispense opening is exposed to the outside. The pressing member includes a female screw at an inner periphery thereof. By fastening the female screw of the pressing member to the male screw of the body portion, the nozzle tip is pressed against the body portion.

A hot runner nozzle for the lateral gating of plastic components has a nozzle body and a pressure lid. Tip elements are arranged between the nozzle body and the pressure lid, which are each inserted into a recess of the nozzle body and are each penetrated by a movable closure needle having a tip, which in at least one operating position protrudes in each case over an outer circumferential edge of the nozzle body. The closure needles each include, on their ends facing away from the tip, a coupling means, which is coupled to a drive means for moving the closure needles. The tip elements are supported on their side facing away from the respective tip of the closure needles on a buttress element inserted between the nozzle body and the pressure lid.

A hot runner nozzle for the lateral gating of plastic components has a nozzle body and a pressure lid. Tip elements are arranged between the nozzle body and the pressure lid, which are each inserted into a recess of the nozzle body and are each penetrated by a movable closure needle having a tip, which in at least one operating position protrudes in each case over an outer circumferential edge of the nozzle body. The closure needles each include, on their ends facing away from the tip, a coupling means, which is coupled to a drive means for moving the closure needles. The tip elements are supported on their side facing away from the respective tip of the closure needles on a buttress element inserted between the nozzle body and the pressure lid.

An injection molding machine includes: a plunger provided inside a barrel and capable of moving forward and backward in an axial direction thereof and rotating about an axis thereof; a feed hole for feeding a molding material in liquid form into a front of the plunger; a packing provided on a backward side of the feed hole to prevent the molding material fed through the feed hole from flowing backward along the plunger; and a controller for controlling a retracting movement of the plunger based on pressure of the molding material fed from the feed hole to thereby perform metering. In this configuration, at least part of the feed hole is covered by a side surface of the plunger at least from start to end of the retracting movement.

An injection molding machine includes: a plunger provided inside a barrel and capable of moving forward and backward in an axial direction thereof and rotating about an axis thereof; a feed hole for feeding a molding material in liquid form into a front of the plunger; a packing provided on a backward side of the feed hole to prevent the molding material fed through the feed hole from flowing backward along the plunger; and a controller for controlling a retracting movement of the plunger based on pressure of the molding material fed from the feed hole to thereby perform metering. In this configuration, at least part of the feed hole is covered by a side surface of the plunger at least from start to end of the retracting movement.