Metal working – Means to assemble or disassemble – Means to assemble electrical device
Patent
1986-10-20
1988-05-17
Hall, Carl E.
Metal working
Means to assemble or disassemble
Means to assemble electrical device
295641, 29838, H05K 330
Patent
active
047441410
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention is concerned with the automatic assembly of electrical and/or electronic components on a corresponding substrate e.g. a printed circuit, especially the final stage of assembly, namely inserting the leads on the components into corresponding through holes in the substrate.
To this end it is necessary beforehand to bend the above-mentioned leads in the same direction with respect to the body of the component, with these leads parallel and a pre-arranged distance (pitch) apart; this function is carried out by appropriate bending devices associated with the present apparatus. Finally it is necessary, by means of corresponding devices, to cut off the leads so that they are of such a length, with respect to the body of the component (in the case of leads which are perpendicular to the axis of the body of the component) or with respect to one head of the above-mentioned body (in the case of leads which are parallel to the axis of the body), as to enable these leads, when inserted into the holes in the substrate, to protrude by a pre-arranged amount beyond the latter. When the above-mentioned operation to cut off the leads has been completed, appropriate clamping devices move the components intermittently into an operating station in which the substrate is positioned.
BACKGROUND ART
Existing types of apparatus for inserting the leads of components into the holes in a printed circuit are complicated, cumbersome and not very functional. One type of apparatus has pincers which grip the body of the component and, with the help of guides, previously positioned around the chosen holes, perform the above-mentioned inserting operation.
Another type of apparatus has two pincers which grip two leads on the component, the aforesaid pincers centre the leads with respect to the chosen holes and then insert the leads gripped between them into these holes.
It is obvious how complex and bulky such a piece of apparatus is, and its bulkiness represents a considerable drawback when one considers the fact that it is necessary to work in a restricted space not much bigger than the space allocated for the corresponding component. Also this type of apparatus cannot provide information as to whether or not the above-mentioned inserting operation has been carried out satisfactorily; and, if not, it will be the job of the operators to then take steps to remove scraps of waste material from the printed circuit.
An object of this invention is to provide a piece of apparatus which enables the leads on electrical and/or electronic components to be inserted into the corresponding through holes in a printed circuit, and which, after the aforesaid inserting operation has been carried out, enables the aforesaid leads to be clamped to the circuit itself. In preferred apparatus it is established that the holes in the substrates are in fact there, and checked that all the leads have been inserted into the relevant holes.
Another object of the invention is to provide apparatus, which is capable of inserting leads in the holes of a printed circuit regardless of the pitch between the above-mentioned leads.
DISCLOSURE OF THE INVENTION
In one aspect the invention may provide apparatus for automatically inserting leads on electrical and/or electronic components through holes in a substrate comprising an operating station S at which a substrate can be positioned and at which, one side of the substrate can be disposed clamping mechanism, carried by an intermittently moving conveyor, for clamping the leads on one of the components with the aforesaid leads protruding parallel to each other by predetermined amounts from the clamping mechanism by which they are held perpendicular relative to the above-mentioned substrate characterised in that the apparatus further comprises: two carriages located at the station S at the opposite side of the aforesaid substrate to the above-mentioned clamping mechanism, mounted for movement in opposite directions parallel to the substrate, two bushes mounted on the carriages, for sliding move
REFERENCES:
patent: 4628595 (1986-12-01), Fujita et al.
Arcotronics Italia S.p.A.
Hall Carl E.
Smith Spencer T.
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