METHOD OF CONTROLLING CONTACT LOAD IN ELECTRONIC COMPONENT MOUNTING APPARATUS
First Claim
1. A method of controlling contact load in an apparatus for mounting electronic components on a substrate, in which a head holding an electronic component is lowered at a first speed to a first position where the electronic component does not contact the substrate, the head being lowered at a second speed slower than the first speed from the first position until a predetermined target contact load is detected, the method comprising:
- moving the head down by a small step for a predetermined distance at the second speed;
measuring a contact load after moving the head down; and
determining whether a measured contact load has reached the predetermined target contact load, the moving and the measuring being sequentially repeated until the measured contact load reaches the predetermined target contact load,wherein the predetermined distance is set to a first predetermined distance when moving the head down until the electronic component contacts the substrate,wherein the predetermined distance is set to a second predetermined distance when moving the head down after the electronic component contacts the substrate, andwherein the second predetermined distance is smaller than the first predetermined distance.
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Accused Products
Abstract
A method of controlling contact load in an apparatus for mounting electronic components on a substrate includes a head holding an electronic component being lowered at a first speed to a first position where the electronic component does not contact the substrate. The head is lowered at a second speed slower than the first speed from the first position until a predetermined target contact load is detected. The head is moved down by a small step for a predetermined distance at the second speed and a contact load is measured after moving the head down. The method includes determining whether a measured contact load has reached the predetermined target contact load. The moving and the measuring is sequentially repeated until the measured contact load reaches the predetermined target contact load. The predetermined distance is set to a first predetermined distance when moving the head down until the electronic component contacts the substrate. The predetermined distance is set to a second predetermined distance when moving the head down after the electronic component contacts the substrate and the second predetermined distance is smaller than the first predetermined distance.
3 Citations
11 Claims
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1. A method of controlling contact load in an apparatus for mounting electronic components on a substrate, in which a head holding an electronic component is lowered at a first speed to a first position where the electronic component does not contact the substrate, the head being lowered at a second speed slower than the first speed from the first position until a predetermined target contact load is detected, the method comprising:
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moving the head down by a small step for a predetermined distance at the second speed; measuring a contact load after moving the head down; and determining whether a measured contact load has reached the predetermined target contact load, the moving and the measuring being sequentially repeated until the measured contact load reaches the predetermined target contact load, wherein the predetermined distance is set to a first predetermined distance when moving the head down until the electronic component contacts the substrate, wherein the predetermined distance is set to a second predetermined distance when moving the head down after the electronic component contacts the substrate, and wherein the second predetermined distance is smaller than the first predetermined distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling contact load in an apparatus for mounting electronic components on a substrate, in which a head holding an electronic component is lowered at a first speed, to a first position where the electronic component does not contact the substrate, the head being lowered at a second speed slower than the first speed from the first position until a predetermined target contact load is detected, the method comprising:
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moving the head down by a small step for a predetermined distance at the second speed from the first position until the electronic component contacts the substrate; measuring contact load, while the head is not moving down, after moving the head down by a predetermined distance; and determining whether the measured contact load has reached the target contact load, the moving and the measuring being sequentially repeated, while the head is not moving down, until the measured contact load reaches the predetermined target contact load. - View Dependent Claims (10, 11)
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Specification