Patent ID: 8327761
Filing Date: 2012-12-11
Classification: B41F,B41P,H05K

Abstract:
1. A screen printer system that is coupled to an upstream side of an electronic component loader which mounts electronic components on a substrate so as to constitute an electronic component mounting line, and in which two screen printers that print electronic component bonding paste to the substrate are arranged in series, wherein each of the screen printers comprises: at least one screen printing section having a mask plate formed with a pattern hole and a squeegee moving mechanism letting a squeegee slidably move over the mask plate supplied with paste; a substrate positioning section that is provided in the screen printing section and that positions and holds the substrate at a print position for the screen printing section; and a conveyance bypass arranged in parallel with the screen printing section and lets a substrate to be sent to a downstream machine pass through; wherein the screen printer system comprises a substrate sorter provided between the screen printer situated on an upstream side of the sorter and the screen printer situated on a downstream side of the sorter and that sorts a substrate from the conveyance bypass situated on the upstream side to the screen printing section situated on the downstream side, or sorts a substrate from the screen printing section situated on the upstream side to the conveyance bypass situated on the downstream side; and wherein in the substrate sorter, the substrate printed by the screen printing section situated on the upstream side is sorted to the conveyance bypass situated on the downstream side and the substrate conveyed through the conveyance bypass situated on the upstream side is sorted to the screen printing section situated on the downstream side so that printing operations subjecting a plurality of substrates including different types of substrates are concurrently carried out in the screen printing section of each of the screen printers.