Metal working – Method of mechanical manufacture – Electrical device making
Patent
1992-09-15
1994-10-18
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
295641, 29748, 414786, H01R 4300, B23P 2300
Patent
active
053555813
DESCRIPTION:
BRIEF SUMMARY
This invention is relating to a method and its implementation device for manufacturing electrical wiring looms.
The technical field of this invention is that of electrical wiring loom manufacturing.
Electrical wiring looms are already used for numerous domestic or industrial electrical appliances such as washing machines and cars.
Electrical wiring looms are composed of a plurality of electric wire conductors which are grouped together, e.g. by means of a plastic clamp or an adhesive band to form an assembly of electric links which can be connected and fastened to a bracket.
Each wire is first cut to the desired length, then stripped, and its ends can be crimped onto a lug or inserted into a component (connector, socket . . . ) as required.
The manufacturing of the electrical wiring looms then consists in grouping together the wires thus prepared and inserting their ends into the components, and ensuring the cohesion of the looms thus formed using bonding means such as clamp or adhesive band.
Methods and devices to manufacture automatically wires cut to the desired length, stripped and crimped are already known, and are described, for example, in the patent applications FR 88/16702 and FR 87/11392.
The general problem is that of the automatized manufacture of the looms of electric wires, that electric wires being supplied with machines which are known and which generally include a linear conveyor on which move transfer clips, each clip gripping one end of an electric wire. Each electric wire is thus gripped by two adjacent transfer clips which are placed one after the other along the conveyor.
Generally an insertion station is located after this conveyor where an insertion device can insert the ends of the wires into the receiving sockets of the components, starting with the first wire fed out by the conveyor and continuing with the following wires.
The problem which arises here is that of not being able to insert ends into components which have already received some ends of other wires: the density of the receiving sockets of the connectors is such that in many cases an automatic insertion device cannot insert the ends of the last wires to be inserted into this component due to the impediment of previous wires whose ends are already inserted.
Another problem is that of being able to place prepared wires next to the insertion station when the looms to be manufactured contain a very great number of wires and numerous components.
These problems are exacerbated further when there are numerous wires and the length of the loom is relatively short.
According to the invention the relevant problem is solved by offering a method of manufacturing looms of electric wires (1, 2, 3, 4 . . . ) whose ends are fitted with terminals which are destined to be inserted into sockets provided in connectors, each of said wires being gripped near to its ends by two adjacent transfer clips which are arranged one after another on a linear conveyor, in such a way that the next procedures are as follows:
In the preparation phase: said wires are positioned near said insertion station and linear conveyor. said connectors is decided upon. and moved by said linear conveyor. According to a wire sequence, the first wire (1) in said line of said transfer clips contains the terminal which must first be inserted according to said order of insertion into said sockets, that each following wire (2), (3), (4), in said line of said transfer clips contains at least one terminal to be subsequently inserted into said sockets according to said order of insertion, after at least one terminal of each of said prior wires, i.e., respectively after at least one terminal of said wire (1), respectively after at least one terminal of said wires (1), (2), and respectively after at least one terminal of said wires (1), (2), (3).
And in a holding-insertion phase: by a displacable grip from said transfer clips, and at least one of said wire ends supporting said terminals of said first wire is inserted into one of said socket, according to said order of insertion.
REFERENCES:
patent: 4428114 (1984-01-01), Teagno
patent: 4581796 (1986-04-01), Fukuda et al.
patent: 4835858 (1989-06-01), Adlon et al.
patent: 5083369 (1992-01-01), Cerda
patent: 5208977 (1993-05-01), Richard
Arbes Carl J.
L'Entreprise Industrielle
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