Screw drive conveying apparatus

摘要

A screw-drive conveying apparatus has on a conveying traveling body side, a first driven roller pair having a shorter distance between two driven front and rear rollers and a second driven roller pair having a longer distance between two driven front and rear rollers. A first screw shaft row with which the respective driven rollers of the first driven roller pair are engaged and a second screw shaft row with which the respective driven rollers of the second driven roller pair are engaged are provided on a traveling path side. The length of screw discontinued spaces between both screw shaft rows is equal to the distance between the driven rollers of the driven roller pair engaged with the screw shaft row on the upstream side.

主权项

1. A screw-drive conveying apparatus in which a screw shaft row composed of a plurality of screw shafts concentrically arranged in a line and interlockingly rotating at a constant speed with respect to each other is provided along a traveling path of a conveying traveling body, and two driven front and rear rollers engaged with the screw shafts are provided to the conveying traveling body with a distance corresponding to a length of a screw discontinued space between the screw shafts, characterized in that
as the two driven front and rear rollers, at least two pairs of a first driven roller pair having a shorter distance between the two driven front and rear rollers and a second driven roller pair having a longer distance between the two driven front and rear rollers are provided, displaced in a direction orthogonal to a traveling direction of the conveying traveling body, and as the screw shaft row, a first screw shaft row with which the respective driven rollers of the first driven roller pair are engaged and a second screw shaft row with which the respective driven rollers of the second driven roller pair are engaged are provided alternately along the traveling path of the conveying traveling body, and respective screw shafts of the first screw shaft row and respective screw shafts of the second screw shaft row are interlockingly connected at a constant speed with respect to each other, and a length of screw discontinued spaces between the first and second screw shaft rows in the traveling direction of the conveying traveling body is equal to the distance in the traveling direction of the conveying traveling body between a headmost driven roller of the driven roller pair engaged with the screw shaft row on a downstream side of the traveling path and a rear-side driven roller of the driven roller pair engaged with the screw shaft row on an upstream side of the traveling path.