Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With rotor
Patent
1991-10-08
1994-02-08
Nguyen, Vinh
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With rotor
324158P, 29845, G01R 106, H05K 300
Patent
active
052851494
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a method and an apparatus according to the preamble of claims 1 and 13 for loading an adapter for a printed circuit board testing device.
2. Description of the Related Art
From practical operation a method and an apparatus of this kind are known which f or each arrangement of the adapter pins uses an individual main magazine and an associated intermediate magazine and a common so-called locking packet. The selection plate is fastened to the intermediate magazine. The diameter of the holes in the main magazine, in the intermediate magazine including the selection plate and in the locking packet is smaller than the diameter of the heads and at least equal to that of the shafts of the adapter pins. The adapter pins thus hang by their heads in the main magazine, in the intermediate magazine and in the locking packet.
The procedure for transferring a first arrangement of adapter pins from a first main magazine into the adapter is as follows:
1. Transporting the main magazine filled with the adapter pins underneath the open locking packet,
2. lifting and thereby transferring the adapter pins into the locking packet by lifting them by means of a hole-free plate moved from below towards the main magazine,
3. closing the locking packet to hold the transferred adapter pins,
4. removing the main magazine that has been completely emptied,
5. transporting the empty intermediate magazine with the selection plate facing upwards beneath the closed locking packet,
6. opening the locking packet so that the adapter pins to be loaded into the adapter fall with their contact ends first through the selection plate into the intermediate magazine,
7. closing the locking packet to hold the remaining adapter pins,
8. removing the loaded intermediate magazine,
9. transporting the empty main magazine beneath the closed, partly filled locking packet,
10. opening the locking packet so that the remaining adapter pins therein fall back into the main magazine with their contact ends first,
11. removing the partly emptied main magazine,
12. transporting the loaded intermediate magazine beneath the open empty locking packet,
13. lifting the adapter pins and transferring them into the locking packet in the same way as described in step 2,
14. closing the locking packet to hold the transferred adapter pins,
15. removing the empty intermediate magazine,
16. transporting the empty adapter beneath the closed partly filled locking packet,
17. opening the locking packet so that the adapter pins therein fall into the adapter with their contact ends first,
18. removing the filled adapter.
These 18 steps are repeated using a second intermediate magazine if the adapter is additionally to be loaded by a second arrangement of adapter pins from a second main magazine.
It is an object of the invention to further develop the method and apparatus of the kind mentioned in the introduction so that the adapter can be loaded more simply and quickly and with less constructional outlay.
This object is achieved according to the invention by the characterizing features of claims 1 and 13. In this way it is possible to reduce the number of process steps from 18 or 36 to 6 or 12 steps and to use only one intermediate magazine even when loading the adapter with adapter pins in various arrangements and to dispense with the locking packet completely.
The transfer of a single arrangement of adapter pins is advantageously done by means of the following steps:
1. The empty intermediate magazine is placed on the full main magazine by relative movement in which the closing plate is arranged on the upper side of the intermediate magazine opposite the main magazine and the selection plate is arranged between the main magazine and the intermediate magazine,
2. the intermediate magazine and the main magazine are tilted together through about 180, so that the adapter pins to be loaded into the adapter fall through the selection plate with their contact heads first into the intermediate magazine,
3. th
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Dehmel Ruediger
Galdik Heimo
Higgen Hans-Hermann
Maelzer Martin
Luther Erich
Maelzer Martin
Nguyen Vinh
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