Electronic component mounting line and electronic component mounting method

1. An electronic component mounting line on which a substrate undergoes solder paste printing, electronic component placements, and reflow in recited order, while being moved from upstream to downstream, the line comprising:

a substrate feeding machine for feeding the substrate having a first placement area for placement of a first electronic component with a solder paste between the area and the component, and a second placement area for placement of a second electronic component having solder bumps;

a screen printing machine for applying the solder paste to the first placement area of the substrate that has been fed from the substrate feeding machine;

a first electronic component placement machine for placing the first electronic component on the first placement area of the substrate to which the solder paste has been applied by the screen printing machine;

a resin dispensing machine for dispensing a thermosetting resin onto at least one reinforcement position arranged on a peripheral edge portion of the second placement area, the substrate having already undergone placement of the first electronic component on the first placement area;

a second electronic component placement machine for placing the second electronic component on the second placement area of the substrate to which the thermosetting resin has been applied, such that a peripheral edge portion of the second electronic component comes in contact with the thermosetting resin that has been applied to the reinforcement position; and

a reflow machine for bonding the first and second electronic components to the substrate, by heating the substrate on which the first and second electronic components have been placed, to melt the solder paste and the solder bumps and to cure the thermosetting resin; and then cooling the substrate,

the second electronic component placement machine being arranged adjacent to and downstream of the resin dispensing machine.

2. The electronic component mounting line in accordance with claim 1 , wherein the second electronic component placement machine has a transferring unit for forming a flux coating, and, before placing the second electronic component on the substrate, brings the flux coating in contact with the solder bumps on the second electronic component, to transfer the flux to the solder bumps.

3. An electronic component mounting method in which a first electronic component and a second electronic component are mounted on a substrate that is being moved from upstream to downstream on an electronic component mounting line, the first electronic component having connection terminals for solder paste connection, the second component having solder bumps, the method comprising:

a first step of preparing the substrate including: a first placement area having first electrodes for connection to the connection terminals; and a second placement area having second electrodes for connection to the solder bumps;

a second step of applying a solder paste to the first electrodes, by using a screen printing machine arranged on the electronic component mounting line;

a third step of placing the first electronic component on the substrate such that the connection terminals land on the solder paste on the corresponding first electrodes, by using a first electronic component placement machine arranged on the electronic component mounting line;

a fourth step of dispensing a thermosetting resin onto at least one reinforcement position arranged on a peripheral edge portion of the second placement area, by using a resin dispensing machine arranged on the electronic component mounting line;

a fifth step of placing the second electronic component on the substrate such that the solder bumps land on the corresponding second electrodes; and bringing the thermosetting resin that has been applied to the reinforcement position, in contact with a peripheral edge portion of the second electronic component, by using a second electronic component placement machine arranged on the electronic component mounting line; and

a sixth step of bonding the first and second electronic components to the substrate by heating the substrate on which the first and second electronic components have been placed, to melt the solder paste and the solder bumps and to cure the thermosetting resin, by using a reflow machine arranged on the electronic component mounting line; and then cooling the substrate,

the fifth step being performed by using the second electronic component placement machine arranged adjacent to and downstream of the resin dispensing machine.

4. The electronic component mounting method in accordance with claim 3 ,

wherein the second electronic component placement machine has a transferring unit for forming a flux coating, and

in the fifth step, before placement of the second electronic component on the substrate, the solder bumps on the second electronic component are brought in contact with the flux coating, to transfer the flux to the solder bumps.