Abstract:
Unit (4) for molding preforms (2) that each have a body (15) and a neck (17) extending the body (15), this unit (4) including: a frame (19), —a mold holder (27) secured to the frame (19) and carrying at least one mold body (29) having the impression of the body (15) of the preform (2); mobile equipment (60) including a carriage (61) and a core holder (62) carrying at least one primary core (64A) and one secondary core (64B), the carriage (61) being mounted so as to be movable with respect to the frame (19) between a molding position and a demolding position, this core holder (62) being rotatable with respect to the carriage (61), in the demolding position of the latter, about a rotation axis parallel to the molding axis in order to transpose the cores (64A, 64B).
Abstract:
The invention relates to a method for the production of form parts from multi-component reactive plastic material, especially from polyurethane, wherein a plurality of moulds are moved by means of mould carriages (1) at least temporarily along a closed, preferably oval, production line (2). To allow a simple and quick import and export of mould carriages in the respectively out of the production line the invention proposes that the mould carriages (1) are provided with rolls (3) and are moved on a stationary ground (4) by the same and that a plurality of supply carriages (6) are arranged along the closed production line (2) at a conveying element (5), which supply carriages (6) are moved by means of the conveying elements (5), wherein a mould carriage (1) is approached to a not occupied supply carriage (6) and is coupled with the same to introduce the mould carriage (1) into the production line (2), wherein for the movement along the production line (2) the mould carriage (1) is guided and moved by the supply carriage (6) in a coupled state between the mould carriage (1) and the supply carriage (6) and wherein the mould carriage (1) is decoupled from the supply carriage (6) and is moved away from the production line (2) for taking the mould carriage (1) out of the production line (2), wherein here the mould carriage (1) is moved with its roils (3) on the stationary ground (4). Furthermore, the invention relates to a respective device.
Abstract:
A continuous rotary injection molding machine, comprising a continuous extrusion-type injection system, having an injection nozzle arranged downwards; a plurality of first injection runners, arranged horizontally, the injection nozzle of the injection system is located at a junction of the plurality of first injection runners; heating members, arranged around the plurality of first injection runners; plural groups of molding molds, arranged under the first injection runners; a plurality of second injection runners, arranged between the first injection runners and the mold cavities; and a plurality of injection switches, arranged on either the first injection runners or the second injection runners.
Abstract:
A multi-mold block drive device includes a guide seat and a plurality of speed reductions units. The guide seat includes opposite inner and outer peripheral surfaces, and a plurality of spaced-apart guide holes extending through the inner and outer peripheral surfaces. A plurality of drivers correspond respectively to the guide holes. Each speed reduction unit is connected between one of the guide holes and a corresponding driver, and includes a guide screw rod having an externally threaded portion, a guide sleeve having an internal thread facing the externally threaded portion, and a plurality of planetary screws interposed between the guide screw rod and the guide sleeve. Each planetary screw has a drive thread meshing with the externally threaded portion and the internal thread. An injection molding machine having the multi-mold block drive device is also disclosed.
Abstract:
The invention relates to a method for the production of form parts from multi-component reactive plastic material, especially from polyurethane, wherein a plurality of moulds are moved by means of mould carriages (1) at least temporarily along a closed, preferably oval, production line (2). To allow a simple and quick import and export of mould carriages in the respectively out of the production line the invention proposes that the mould carriages (1) are provided with rolls (3) and are moved on a stationary ground (4) by the same and that a plurality of supply carriages (6) are arranged along the closed production line (2) at a conveying element (5), which supply carriages (6) are moved by means of the conveying elements (5), wherein a mould carriage (1) is approached to a not occupied supply carriage (6) and is coupled with the same to introduce the mould carriage (1) into the production line (2), wherein for the movement along the production line (2) the mould carriage (1) is guided and moved by the supply carriage (6) in a coupled state between the mould carriage (1) and the supply carriage (6) and wherein the mould carriage (1) is decoupled from the supply carriage (6) and is moved away from the production line (2) for taking the mould carriage (1) out of the production line (2), wherein here the mould carriage (1) is moved with its roils (3) on the stationary ground (4). Furthermore, the invention relates to a respective device.
Abstract:
A continuous rotary injection molding machine, comprising a continuous extrusion-type injection system having an injection nozzle arranged downwards; a plurality of first injection runners, arranged horizontally, the injection nozzle of the injection system is located at a junction of the plurality of first injection runners; heating members, arranged around the plurality of first injection runners; plural groups of molding molds, arranged under the first injection runners; a plurality of second injection runners, arranged between the first injection runners and the mold cavities; and a plurality of injection switches, arranged on either the first injection runners or the second injection runners.