Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With product ejector
Patent
1992-12-28
1994-08-02
Bushey, Charles S.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With product ejector
425436R, B29C 4542
Patent
active
053340094
DESCRIPTION:
BRIEF SUMMARY
FIELD AND BACKGROUND OF THE INVENTION
The invention relates to a handling device for removing moulded plastic parts from the space between die platens carrying the mould halves of an injection moulding machine wherein the handling device movable in the longitudinal direction of the injection moulding machine has a pivotable gripper arm.
Known handling devices, with which after the injection moulding process the moulded parts are removed from the mould, require large constructional expenditures and are, accordingly, expensive. The reason lies in particular therein that the gripper arms must carry out complicated motions in order to remove the moulded parts, whose extent can correspond in terms of size to that of the injection moulding platens, from the mould region. Somewhat simple are therefore only those handling devices with which only the point-form casting stalk can be removed from the injection moulding machine.
In known handling devices of the above defined type the gripper arm is pivotable about a transverse horizontal (see DE-PT 36 31 314 Cl) or about a vertical axis (see DE-A-36 41 135) into the space between the longitudinal bars which brace the machine frame and carry the movable injection moulding platen. The pivot range of the entire handling device becomes thereby large which is not only of disadvantage due to the space requirement connected therewith but rather also leads to the consequence that the handling device cannot be enclosed completely within the protective grating or housing.
SUMMARY OF THE INVENTION
It is the task of the invention to describe a handling device which is of simple construction whose pivot range projects as little as possible beyond the profile of the injection moulding machine itself so that the possibility is to be created of enclosing the handling device together with the injection moulding machine in a protective housing.
The task posed is solved thereby that the gripper arm is pivotable about an axis extending parallel to the longitudinal direction of the machine and the volume between the die platen is free of the customary longitudinal bars.
The handling device according to the invention is advantageously applicable in an injection moulding machine such as described in EP-A1-311 133.
Since the customary longitudinal bars became superfluous it is possible to move the longitudinal axis about which the gripper arm is pivotable very close to the die platen whereas in known arrangements a console or the like must ensure the necessary distance between handling device and longitudinal bar. The arrangement possible due to the invention of the longitudinal guidance of the handling device directly on the machine frame or the stationary die platen can lead to considerable savings in time due to the greater travelling speed of the handling device.
The invention permits implementing the gripper arm so that it is rigid and its length can also be constant although an implementation as parallelogram guide rod is also within the scope of the invention. Even when changing the mould height it is not necessary to change the gripper arm.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following different embodiment examples of the invention will be described in conjunction with the Figures of the enclosed drawings wherein:
FIG. 1 a schematic side view of an injection moulding machine with a handling device according to the invention,
FIG. 2 a section through an injection moulding machine and a view of the handling device according to the invention in longitudinal machine direction,
FIG. 3 a view of the handling device from the direction of arrow A of FIG. 2,
FIG. 4 a view of the handling device of FIG. 2 from above, wherein the die platen of the injection moulding machine are drawn in schematically,
FIG. 5 a cross section through an injection moulding machine and a schematic front view of the handling device according to the invention according to a further embodiment example of the invention,
FIG. 6 schematically a top view onto the handling device of FIG. 5,
FIG. 7 a cross secti
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Aumayer Walter
Urbanek Otto
Bushey Charles S.
Engel Maschinenbau Gesellschaft m.b.H.
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