Arrangement for a continuous two-stage ejector of the built-in type
OwnerHans Mullerinventor
Life of this patent
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Abstract
The arrangement is based on the principle that the ejector (9) of a moulding tool actuates the front ejector plates (4, 4A, 4B) and the rear plates (5, 5A, 5B) are conveyed along until the bearing segments reach the free groove in the central pin, which at the same time is provided with a stroke-restricting collar (20), in conjunction with which balancing against misalignment of the ejector package is obtained at the same time through the incorporation of this two-stage ejector, and, at the same time, that it replaces extra guides.
Claims10
Arrangement (1) for a continuous two-stage ejector (2) of the built-in type for moulding tools (3) comprising pairs of front and rear moving ejector plates (4, 4A, 4B;
- 5, 5A, 5B) and an actuating device (6) for causing the aforementioned ejector plates (4, 4A, 4B;
- 5, 5A, 5B) to be moved to intended positions, characterized
- in that front ejector plates are attached to, and are capable of actuation by, a reciprocating (7, 8) rod (9) that is connected to the machine (3),
- in that a central pin (12) extends between the fixed plate (13) of the moulding tool and the body (14) of the moulding tool,
- in that the aforementioned central pin (12) exhibits an annular groove (17) at a distance (x) from a projection (20) on the aforementioned central pin (12),
- in that pairs of sleeves (21, 22) are accommodated by the aforementioned central pin (12) with one sleeve (21) passed onto the other sleeve (22),
- in that each of the two sleeves (21, 22) is attached to its own moving ejector plate (5, 5A, 5B),
- in that the inner sleeve (22) exhibits transcurrent recesses (24) corresponding to the desired number of locking segments (23),
- in that the outer sleeve (21) exhibits a stop part (25) capable of actuating the aforementioned locking segments (23),
- in that the aforementioned locking segments (23) exhibit stop parts (26) capable of interacting with the aforementioned grooves (17),
- in that extension of the first sleeve (22) is restricted by the projection (20), in conjunction with which the ejector (9) of the machine is so arranged in an initial phase as to actuate the front ejector plates (4, 4A, 4B) and so that the rear ejector plates (5, 5A, 5B) are conveyed along through the interconnection of the two sleeves (21, 22) with the help of the locking segments (23), and in that, after actuation of the locking segments (23) and their accommodation in the aforementioned annular groove (17), the rear ejector plates (5, 5A, 5B) are released and the front ejector plates (4, 4A, 4B) are so arranged as to be actuated singly by the ejector (9) causing them to be extended to the intended end position (B).
Dependencies are inferred from the claim text.