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EP0203625A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Device for the positioning and the quick replacement of pieceholder pallets in a working station

Assignee: Axis SpA
•
Filing: 1986-03-10
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Granted: —
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Expires: 2006-03-10
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Abstract

Abstract A device for the positioning and the quick replacement of pieceholder pallets in a working station is installed along a pallet feed line formed by two parallel rotating belts on which the pallets, retained by side shoulders, move towards a working station in which each pallet is locked by energized electromagnets in face of which there are disposed magnetizable stop members for stopping the pallets; provided in the working station are guides on which the pallets rest when being temporarily moved away from the underlying continuously rotating belts; an air cylinder, provided with retractable projections arranged to cooperate with corresponding seats of the pallets, may be extended for a stroke equal to the longitudinal dimension of each pallet∞ addition,the extension force of the cylinder is lower than the pallet locking force exerted by the electromagnet, so that it is connected to the pallet situated upstream the pallet positioned in the working station, and is actuated to exert a pushing action onto the pallet to which it is connected in the working station while the electromagnet is still energized, thus instantaneously imparting a translation movement to the pallet to which it is connected within the working station and to the pallet which precedes it outside said working station, as soon as the electromagnet is de-energized.

Inventors

  • 👤 Cristiano Gallucci
  • 👤 Luciano Santadrea
  • 👤 Sabatino Luciani

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-02 19:36
CPC Classifications
B; B23; B23Q; B23Q7/00; B23Q7/14; B23Q7/1426; B23Q7/1478; B23Q7/1489

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 227 words
-A device for the positioning and the quick replacement of the pieceholder pallets in a working station of the type installed along a feed line formed by two parallel rotating belts on which the pallets, in contact with one another and retained by side shoulders, move towards a working station in which each pallet is locked by means of energized electromagnets in face of which there are disposed magnetizable stop means for stopping the pallets, characterized in that in the working station there are provided guides on which the pallets rest as they are temporarily moved away from the underlying continuously rotating belts; there being provided an air cylinder having retractable projections arranged to cooperate with corresponding seats of the pallets; said cylinder being extensible for a stroke equal to the longitudinal dimension of each pallet and exerting an extension force lower than locking force exerted by the electromagnet onto the pallet, so as to be connected to the pallet situated upstream the pallet positioned in the working station, and to be actuated to exert a pushing action onto the pallet to which it is connected, as the electromagnet is still energized, thus instantaneously imparting a translation movement to the pallet to which it is connected in the working station and to the pallet which precedes it outside said station as soon as the electromagnet is de-energized.
Claim 2
Dependent Claim 227 words
-A device for the positioning and the quick replacement of the pieceholder pallets in a working station of the type installed along a feed line formed by two parallel rotating belts on which the pallets, in contact with one another and retained by side shoulders, move towards a working station in which each pallet is locked by means of energized electromagnets in face of which there are disposed magnetizable stop means for stopping the pallets, characterized in that in the working station there are provided guides on which the pallets rest as they are temporarily moved away from the underlying continuously rotating belts; there being provided an air cylinder having retractable projections arranged to cooperate with corresponding seats of the pallets; said cylinder being extensible for a stroke equal to the longitudinal dimension of each pallet and exerting an extension force lower than locking force exerted by the electromagnet onto the pallet, so as to be connected to the pallet situated upstream the pallet positioned in the working station, and to be actuated to exert a pushing action onto the pallet to which it is connected, as the electromagnet is still energized, thus instantaneously imparting a translation movement to the pallet to which it is connected in the working station and to the pallet which precedes it outside said station as soon as the electromagnet is de-energized.
Claim 3
Dependent Claim 55 words
-A device as claimed in Claim 1, characterized in that the guides are disposed between the belts and that corresponding lower surfaces of the pallets rest thereon, the plane of contact between the surfaces and the guides lying at a level slightly higher than the plane of the belts on which the pallets are fed.
Claim 4
Dependent Claim 72 words
-A device as claimed in Claim 1, characterized in that the cylinder extends parallel to the line of advancement of the pallets and is rigidly connected to a carriage which is slidable along rods parallel to the cylinder and carries a second cylinder extending vertically with an action straight line perpendicular to the first cylinder, and whose rod is provided with said projection arranged to cooperate with corresponding seats of the pallets.
Claim 5
Dependent Claim 33 words
-A device as claimed in Claim 3, characterized in that the projection is a nib and the seats of the pallets are bushings, the nib being arranged to enter the bushings without clearance.

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