Metal working – Plural diverse manufacturing apparatus including means for... – Separate tool stations for selective or successive operation...
Patent
1994-08-02
1996-06-25
Briggs, William
Metal working
Plural diverse manufacturing apparatus including means for...
Separate tool stations for selective or successive operation...
295641, 72203, 228 51, B23P 2304
Patent
active
055288189
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an assembly line (installation) by means of which it is intended to produce steel coffers as finished components for ceilings and/or wall structures at a plurality of stations in a continuous run.
A large number of steel coffers is required as wall elements and bearing floors in the course of erecting large buildings, as well as for interior finishing and construction of buildings and ships, which coffers consist of multiply beveled steel sheets of a large length and width, which are to be provided with trough-openings and fastening holes and are to have welded-on reinforcing sections.
In actuality, this coffer production is performed elaborately by means of a plurality of machines, and the known bending presses are not designed for beveling long sheets, so that the steel coffers are of only small dimensions and therefore their number used is increased and the total construction is made more expensive.
It is the object of the invention to develop an assembly line, by means of which it is possible to produce a steel coffer incorporating all required structural characteristics for later use, having a large surface and made of various sheet metal thicknesses from a sheet metal plate in the course of an automatic run-through and at manipulable processing positions with short clock times in an efficient and economical manner.
This object is attained in accordance with the invention by the characterizing features of claim 1; the subsequent dependent claims 2 to 6 contain advantageous further developments of the embodiment of the assembly line.
It is a further object of the invention to provide a bending press for beveling of long sheet metal plates of different sheet metal thicknesses at an even bending pressure and large bending angles, which can be integrated into the assembly line as a long multi-component.
This object is attained by the characteristic of claim 7 and the subsequent claims 8 to 13 containing advantageous further developments.
A further object is considered to be the provision of a manipulator cooperating with the bending press, which introduces the sheet metal plate into the bending press and removes it therefrom and has many free degrees of movement.
This object is attained by means of claims 14 to 16.
One concept of the invention is seen to lie in the entire assembly line, a second, independent concept of the invention lies in the special characteristics of the bending press, and a third concept of the invention lies in the combination of the bending press with the specially designed and operating manipulator.
By means of the assembly line of the invention it is possible to produce in an efficient and economical manner large numbers of steel coffers within short clock times (clock time 17 min.), which have all structural characteristics required for later use and a large-surface design.
The bending installation is one of several stations of the assembly line and comprises three bending presses which can be coupled, an underfloor trolley (bogey truck), a manipulator and a roller-ball table.
The bending presses, having individual lengths of 4 m and operating in accordance with the bending process, are individually controlled but designed in such a way that they can simultaneously work on the workpiece (sheet metal plate) without gaps in the manner of a battery of two or three presses.
The manipulator is embodied as a movable semi-wall crane, has a movable gripping and rotating device for the sheet metal plate and positions it in the bending press without the need for stops. Manipulation of the sheet metal plate takes place in one processing plane. The sheet metal piece or coffer is supported on the roller-ball table. The manipulator here needs only to overcome inertia and frictional resistance.
The job of the underfloor trolley, which can be moved along the X axis in an elongated gap of the roller-ball table, is to convey the sheet metal piece always into the same position and to hand it over to the manipulator, as well as to take over an already bent coffer in the sam
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The Sun Also Rises In Italy, Sheet Metal Industries, vol. 68, No. 1, pp. 25-26, Jan. 1991.
W. Bauer, Biegemaschinen, Werkstattstechnik, Zeitschrift Fur Industrielle Fertigung, vol. 81, No. 3, pp. 178-179, 1991.
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