Component placement machine
AssigneeKoninklijke Philips Electronics N.V.
InventorJohannes Hubertus Antonius Van De Rijdt
Life of this patent
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Abstract
In a component placement machine, a placement head (4) is driven by a linear motor (5). The stationary part (7) of the motor is attached to the machine frame (1) on which a PCB (8) is attached. The movable part (6) of the motor is connected to a slide (2) on which the placement head (4) is attached. During driving the placement head, reactive forces of the motor generate vibrations in the stationary part (7) of the motor and thus in the machine frame (20). This causes inaccuracies during the placement of components (9) on the PCB (8). To diminish this problem, the reactive forces are intercepted in a separate force frame (10) which is dynamically disconnected from the machine frame (1).
Claims8
A component placement machine comprising
- a machine frame (1, 20) over which printed circuit boards (8, 38) can be transported and on which the printed circuit boards can be fixed, which machine frame (1, 20) is provided with a guide member (3, 21) along which a slide (2, 22) can be moved,
- a placement head (4, 36) for placing components (9, 37) on the printed circuit boards, which placement head is coupled to the slide,
- a linear motor (5, 31) for driving the slide (2, 22) along the guide member (3, 21) in a drive direction (P, Y), which motor has a stationary part (7, 25) and a movable part (6, 24), which movable part is connected to the slide,
- characterized in that the stationary part (7, 25) of the motor (5, 33) is attached to a force frame (10, 27) which is dynamically disconnected with respect to the machine frame (1, 20).
Dependencies are inferred from the claim text.