Die ejector height adjustment
AssigneeAsmpt Singapore Pte. Ltd.
InventorsChi Wah Cheng, Wan Yin Yau, Kwok Pun Law
Life of this patent
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Abstract
A die ejection apparatus operable to eject a die from a support has at least two ejector components configured to lift a die located on the support. The ejector components are moveable to a position in which a lifting force is exertable by the ejector components on the support, so as to lift a die located on the support. Movement of the die ejector components is initiated towards the support, and a moment when each of the die ejector components reaches the position is determined. A height offset of each die ejector component relative to a height of another die ejector component is determined upon reaching the said position, and relative heights of the die ejector components are adjusted in dependence upon the evaluated height offset.
Claims15
A method of adjusting a die ejection apparatus operable to eject a die from a support, the method comprising:
- providing a die ejection apparatus comprising at least two ejector components configured to lift a die located on the support, the ejector components being moveable between:
- a first position in which no lifting force is exertable by the ejector components on the support;
- and
- a second position in which a lifting force is exertable by the ejector components on the support, so as to lift a die located on the support in use;
- said method comprising:
- providing a support over the die ejection apparatus;
- initiating movement of the die ejector components from the first position towards the second position such that the die ejector components exert the lifting force on the support;
- determining when each of the die ejector components reaches the second position from the first position;
- evaluating a height offset of each die ejector component relative to a height of another die ejector component upon reaching the second position from the first position;
- and
- adjusting relative heights of the die ejector components in dependence upon the evaluated height offset.
Dependencies are inferred from the claim text.