Device for returning workpieces
AssigneeLigmatech Automationssysteme GmbH
InventorsBodo Tonnigs, Dietmar Kaden
Life of this patent
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Abstract
The invention relates to a device for returning machined workpieces from the delivery side of a first machining unit to the feeding side of the first or of another machining unit. The inventive device comprises the following: a transfer device (1) for transferring the machined workpieces to the delivery side of the first machining unit; a lifting device for lifting the workpieces, which are delivered by the transfer unit, into a return position located above the transfer unit, and; a return device (2) for conveying the workpieces, which are delivered by the lifting device, back to the feeding side of the first or the other machining unit. The transfer device (1) comprises a transfer table with interspaced first supporting elements (4) for the workpieces. The
Claims30
Device for returning machined workpieces from the delivery side of a first machining unit to the feeding side of the first or of another machining unit, said device comprising:
- a transfer device (1) for transferring the machined workpieces from the delivery side of the first machining unit,
- a lifting device for lifting the workpieces which are delivered by the transfer unit into a return position located above the transfer unit, and
- a return device (2) for conveying the workpieces which are delivered by the lifting device back to the feeding side of the first or the other machining unit,
- with the transfer device (1) comprising a transfer table with interspaced first supporting elements (4) for the workpieces, the lifting device comprising at least one lifting table (3;
- 3′, 3″) that has interspaced second supporting elements (5) which can be upwardly guided between the first supporting elements (4) of the transfer table, and the lifting device comprising at least one drive unit (7, 8) which moves the at least one lifting table (3;
- 3′, 3″) in a rotary motion from the transfer table upward to the return position and back to the transfer table,
- characterised in that two lifting tables (3;
- 3′, 3″) are provided which perform the at least two-dimensional cyclic movement between the transfer table and return position simultaneously, with the first lifting table (3) being configured in one piece and the second (3′, 3″) being configured in two pieces, the means for coupling the one-piece lifting table (3) to the drive units (7, 8) being provided at the half length of the one-piece lifting table (3) and the means for coupling the two sections (3′, 3″) of the two-piece lifting table to the drive units (7, 8) being provided at the outside of these two sections (3′, 3″).
Device according to any of the preceding claims, characterised in that the transfer table is a fixed transfer table.
Device according to any of the preceding claims, characterised in that the lifting device comprises a first drive unit (7) for producing the up and down movement of the lifting tables (3;
- 3′, 3″).
Device according to any of the preceding claims, characterised in that the lifting device comprises a second drive unit (8) for producing a substantially horizontal movement of the lifting tables (3;
- 3′, 3″).
Device according to any of the preceding claims, characterised in that at least one of the drive units (7, 8) has a crank mechanism.
Device according to any of the preceding claims, characterised in that all the drive units provided (7, 8) are synchronised with each other.
Device according to any of the preceding claims, characterised in that a higher-level control to control the drive units (7, 8) is provided.
Device according to any of the preceding claims, characterised in that means (13, 14, 15, 16, 17, 18) are provided to couple each lifting table (3;
- 3′, 3″) to each drive unit (7, 8).
Device according to any of the preceding claims, characterised in that the movements of the lifting tables (3;
- 3′, 3″) are synchronised with each other.
Device according to any of the preceding claims, characterised in that the supporting elements (5) of the lifting tables (3;
- 3′, 3″) comprise rotatable transport rollers whose rotational axes lie substantially perpendicular to the direction of transport of the workpiece.
Device according to any of the preceding claims, characterised in that the supporting elements (4) of the transfer table comprise rotatable transport rollers whose rotational axes lie substantially perpendicular to the direction of transport of the workpiece.
Device according to claim 29 or 31, characterised in that the transport rollers are driven.
Dependencies are inferred from the claim text.