Abstract:
The pellet dosing apparatus comprises a hopper (10) pouring pellets (1) on a chute (30) which is vibrated by a vibrator device (3) to move the pellets (1) forward along the chute until dropping them from a discharging end (30a). A counting device (20) is arranged for counting the number of pellets (1) falling from said discharging end (30a) of the chute (30) into a dosing container (4). The pellets (1) are retained in the dosing container (4) by transferring means until their number reaches an amount corresponding to a pre-established dose determined by control means based on a counting signal received from said counting device (20). The control means then control the transferring means to transfer the pellets from the dosing container to an output duct.
Abstract:
This invention relates to a method and apparatus for producing paving blocks (K) having ornamented surface, and the apparatus consists of a starting table (1), and a filling carriage (2) movable along a guide rail (3) towards and above a forming mould (4) comprising at least one mould cavity (4a) and connected to the starting table (1) is arranged; and in an interior space of the filling carriage (2) a first chamber for receiving base material (6a) and at least one second chamber (6b) for receiving ornamenting material are formed and separated by a septum (v), and a feeding device (7) for dispensing a mixture of ornamenting material is arranged in said second chamber (6b), characterized in that the feeding device (7) is formed by a metering plate (9,91,92,93) provided with holes (9a) and a metering member (10,101,102,103) fitted to and movable along the metering plate (9,91,92,93), and further provided by an actuator for moving the metering member (10,101,102,103).
Abstract:
An apparatus comprises a conveying device provided with seat elements arranged for receiving objects, the seat elements being movable along a curved path, and a further conveying device provided with a transferring arrangement arranged for delivering the objects to, and/or removing the objects from, the conveying device, wherein the transferring arrangement comprises coupling elements arranged for engaging the seat elements in such a way that the seat elements and the transferring arrangement are maintained mutually coupled along a portion of the curved path.
Abstract:
An apparatus comprising a transferring element for transferring a dose of flowable material, said dose being provided with an elongated body having a transverse dimension and an end zone, a receiving member for receiving said dose from said transferring element, wherein said transferring element comprising an end-forming arrangement for forming said end zone in such a way as to decrease said transverse dimension in the vicinity of said end zone. A dose of plastics comprises an elongated body provided with a transverse dimension, said elongated body comprising an end zone provided with a respective transverse dimension that is less than said transverse dimension.
Abstract:
An apparatus for transferring a mold charge pellet to a molding machine having a mold with a mold cavity includes a hub rotated about an axis, at least one arm extending generally radially from the hub to rotate with the hub around the axis, and a cam system extending at least partially around the axis and operably coupled to the arm for moving the arm along a predetermined path with respect to the axis as the hub and the arm rotate around the axis. In one presently preferred embodiment, at least a portion of the arm traveling along a plane that is parallel to the axis during a portion of said path.
Abstract:
Methods for pre-shaping paint film laminates and co-molding processes using such laminates are disclosed. The methods comprise the steps of providing (e.g., forming or procuring) a plastic paint film laminate, softening the paint film laminate with heat such that one or more localized portions of the member absorb more heat than the remainder, and deforming the plastic film member to form a pre-shaped article. The formation of different heat absorption areas on the paint film laminate is referred to as the provision of heat sink areas. These heat sink areas can be provided for example by surface coating of heat retention means such as black paint or ink pigments on localized areas of the surface of the laminate followed by uniform heating of the laminate in an oven or the like or the sheet can be heated in localized areas to a greater extent (i.e. time and/or temperature) than in remainder portions by the means of heat guns or the like. In either case, the result is that certain desired portions of the paint film absorb more heat than the remainder sections. The heat sink portions are deformed in either a pre-shaping step or in the molding step. When the heat sink portions are placed adjacent mold sections adapted to form a given surface continuity, the portions of the laminate bordering the heat sink portions exhibit gloss consistent with other show surfaces of the co-molded part.
Abstract:
A decorative transfer material includes a base film, a decorative metal vapor deposition layer, a metallic reinforcing layer covering the whole rear face of the metal vapor deposition layer to thereby reinforce the metal vapor deposition layer, a retainer layer for securing the metallic reinforcing layer to the base film, and an adhesive layer for bonding the metallic reinforcing layer to a to-be-decorated object molded by resin. The metallic reinforcing layer is formed of a metallic powder resin layer or a metallic foil layer. After the transfer material is set in dies for injection molding, the dies are closed. Simultaneously with formation of synthetic resin injected into the in-mold dies, the resin is bonded with the metallic reinforcing layer of the transfer material by the adhesive layer. Thereafter, the in-mold dies are opened and the base film of the transfer material is removed, whereby a decorated article is obtained.
Abstract:
Molten resin, plasticized in the plasticization chamber, is fed to the injection chamber through a connection passage where it is measured. Before it is injected by the plunger, the connection passage is blocked and the molten resin is preliminarily compressed. This invention provides a method using a preplasticization type injection molding machine that controls the volume of the filled molten resin with little variation utilizing blocking and preliminary compression. By means of blocking or preliminary compression, the position movement by which the plunger moves from the position at which the measurement is completed is calculated, and the position at which the next measurement will be complete is corrected. Furthermore, the molten resin fill operation is done on the basis of the position of the plunger detected at the time of the preliminary compression.
Abstract:
In a process for the production of optical lenses, in particular contact lenses, a lens material is introduced between two mould halves. The mould halves each have a moulding surface and enclose a cavity in the closed state of the mould. After the lens material has been introduced the two moulding surfaces are moved towards each other and the lens material is enclosed in the cavity. If necessary, the lens material enclosed in the cavity is then polymerised. The first moulding surface is provided on the one mould half and the other mould half includes a mould part that is movable inside it with a close fit in the manner of a piston and on which the second moulding surface is provided, so that by moving that mould part towards the first moulding surface the cavity is closed. For this purpose, the two mould halves are first assembled, then the movable mould part which has the second moulding surface is moved in the direction towards the first moulding surface. With the mould halves assembled, the lens material is introduced between the two moulding surfaces before the cavity is closed.
Abstract:
The continuous mixing apparatus for preparing a rubber composition has a mixing chamber accommodating at least one rotor rotating in a stator and extending between an upstream end and a downstream end between which the material progressively passes. The base elastomers are introduced at the upstream end of the mixing chamber by means of volumetric pumps capable of delivering the said base polymers under pressure. It has members for the dosaging and forced introduction of the other components, to arranged along the mixing chamber at at least two longitudinally separated positions between the upstream end and the downstream end.