Browse Prior Art Database

Mechanical Bent Pin Sensor

IP.com Disclosure Number: IPCOM000043771D
Original Publication Date: 1984-Sep-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Hecker, EP: AUTHOR

Abstract

The mechanical bent pin sensor gives a method of intelligence or interpretation to the robot, allowing it to detect or sense bent pins of a component prior to assembly onto a circuit card. When using a robot to do component insertion of components having a number of pins to be plugged into a circuit board or the like, the components can be brought to a staging or straightening block 10 that has tapered holes 12 of the same pitch or grid and nearly the same diameter as the component leads or pins 14. The tapering will provide a tolerance; that is, the pin 14, indexed with the tapered hole 12, can be slightly bent and the taper will tend to lead the pin to the hole where the pin will be straightened. The component or module to be plugged into the circuit board is transported by the robot (not shown).

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Mechanical Bent Pin Sensor

The mechanical bent pin sensor gives a method of intelligence or interpretation to the robot, allowing it to detect or sense bent pins of a component prior to assembly onto a circuit card. When using a robot to do component insertion of components having a number of pins to be plugged into a circuit board or the like, the components can be brought to a staging or straightening block 10 that has tapered holes 12 of the same pitch or grid and nearly the same diameter as the component leads or pins 14. The tapering will provide a tolerance; that is, the pin 14, indexed with the tapered hole 12, can be slightly bent and the taper will tend to lead the pin to the hole where the pin will be straightened. The component or module to be plugged into the circuit board is transported by the robot (not shown). The robot then releases the component above and in line with the holes 12 in the straightening block 10. If the component leads 14 drop into the tapered holes 12, as shown in Fig. 1a, it can be assumed that all leads 14 are straight and the component can be installed into a printed circuit card. If the component does not drop into the tapered holes 12, as shown in Fig. 1b, then the height variance of the component can be sensed and it is assumed that bent pins or leads exist on the component. The height sensing is done by an appropriate switch, such as a lever switch or an optical switch (not shown). When the robot senses that the component i...