Patent ID: 9475658
Filing Date: 2016-10-25
CPC Classification: B65G

Claim Text:
1. A stop device that abuts against a work during conveyance and stops the work, comprising: a first stop lever configured to abut against the work during conveyance and be able to stop the work at a predetermined stop position; a movable unit configured to support said first stop lever so as to be able to pivot said first stop lever in a predetermined range toward a downstream side in a conveyance direction of the work; a first biasing unit configured to bias said first stop lever toward an upstream side in the conveyance direction; a driving unit configured to be able to displace said movable unit between a working position where said first stop lever can abut against the work, and a retraction position where said first stop lever cannot abut against the work; a support member fixed to said movable unit; a second stop lever pivotably supported by said support member through a horizontal shaft orthogonal to the conveyance direction; and a second biasing unit configured to bias said second stop lever toward the upstream side, wherein said second stop lever includes a first abutment surface and an inclined surface continuous with said first abutment surface, said support member includes a second abutment surface which abuts against said first abutment surface so as to regulate a pivot range of said second stop lever, said second biasing unit biases said inclined surface upward, when a work conveyed in the conveyance direction abuts against said second stop lever, said first abutment surface abuts against said second abutment surface so as to regulate a pivot of said second stop lever toward the downstream side, and said second stop lever stops the work conveyed in the conveyance direction at the same position as a conveyance stop position where said first stop lever stops conveyance of the work, or at a position on the downstream side in the conveyance direction from the conveyance stop position, when a work conveyed backward abuts against said second stop lever, said second stop lever pivots toward the upstream side against biasing of said second biasing unit so as to permit a traveling of the work conveyed backward, and after the work conveyed backward passes through said second stop lever, said inclined surface of said second stop lever is biased upward by said second biasing unit.