Carrier-belt conveyor with diverter switch
AssigneeLaitram, L.L.C.
InventorBenny J. Boudreaux, IV
Life of this patent
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Abstract
A modular-belt conveyor for translating articles along the width of the conveyor atop carriers on the belt. The carriers have an upper article-supporting slat at the top of a belt module connected to a lower follower that extends through the thickness of the module and past its bottom. Guides in the conveyor frame in contact with the followers guide the carriers along the width of the belt in slots. A diverter switch switches the followers between two carryway guides: one defining a home path and the other, a divert path.
Claims17
A conveyor comprising:
- a carryway;
- a conveyor belt suitable for advancing along the carryway in a direction of belt travel, the conveyor belt comprising:
- a series of belt rows of one or more belt modules hingedly joined end to end at hinge joints, wherein each of the belt rows extends in width from a first side to a second side and in thickness from a top to a bottom and at least some of the belt rows comprise:
- a belt module that extends in width from a left side to a right side and includes:
- a slot extending through the thickness of the belt module along the width of the belt module;
- a carrier having:
- a follower extending through the slot and past the bottom of the belt module and having a bearing surface;
- a slat attached to the follower at the top of the belt module to slide along the width of the belt row with the follower and having an upper article-supporting surface and a bottom side;
- wherein the slat extends along the width of the row;
- an actuator;
- a diverter switch in the carryway under the conveyor belt and including:
- a guide portion having a first exit channel and a second exit channel oblique to the first exit channel;
- a shuttle defining at least a portion of an entry channel that leads to the first and second exit channels and having a gap;
- wherein the actuator is coupled to the shuttle to translate the shuttle from a first position in which the gap is positioned to define a first path for the carrier's follower through the entry channel, the gap, and the first exit channel and in which shuttle structure blocks the second exit channel to a second position in which the gap is positioned to define a second path for the carrier's follower through the entry channel, the gap, and the second exit channel and in which shuttle structure blocks the first exit channel.
A conveyor comprising:
- a carryway;
- a conveyor belt suitable for advancing along the carryway in a direction of belt travel, the conveyor belt comprising:
- a series of belt rows of one or more belt modules hingedly joined end to end at hinge joints, wherein each of the belt rows extends in width from a first side to a second side and in thickness from a top to a bottom and at least some of the belt rows comprise:
- a belt module that extends in width from a left side to a right side and includes:
- a slot extending through the thickness of the belt module along the width of the belt module;
- a carrier having:
- a follower extending through the slot and past the bottom of the belt module and having a follower body having an upper bearing surface and a pin extending downward from a bottom of the follower body;
- wherein the pin is narrower than the rest of the follower body and is disposed at a level lower than a lowermost level of the upper bearing surface;
- a slat attached to the follower at the top of the belt module to slide along the width of the belt row with the follower and having an upper article-supporting surface;
- wherein the slat extends along the width of the row;
- an actuator;
- a diverter switch in the carryway under the conveyor belt and including:
- an entry portion having two side walls defining an entry channel through which the carrier's follower is guided by contact between the follower's upper bearing surface and one of the side walls;
- a shuttle having a gap between two walls;
- a guide portion having:
- a first exit channel and a second exit channel oblique to the first exit channel;
- an upper diagonal exit guide wall bounding the second exit channel and a lower diagonal exit guide wall bounding the second exit channel closer to the shuttle's gap;
- wherein the actuator is coupled to the shuttle to translate the shuttle from a first position in which the gap is positioned to define a first path for the carrier's follower through the entry channel, the gap, and the first exit channel and in which shuttle structure blocks the second exit channel to a second position in which the gap is positioned to define a second path for the carrier's follower through the entry channel, the gap, and the second exit channel and in which shuttle structure blocks the first exit channel;
- wherein, when the shuttle is in the second position, the follower is guided through the entry channel by contact between the upper bearing surface and one of the entry portion's side walls and one of the shuttle's walls and, after exiting the gap, by contact between the pin and the lower diagonal exit guide wall to divert the follower into the second exit channel until the upper bearing surface of the follower engages the upper diagonal exit guide wall to guide the follower the rest of the way through the second exit channel along the second path.
A diverter switch suitable for causing a conveyor belt's follower having an upper bearing surface and a recessed lower bearing surface to translate laterally along the width of the belt perpendicular to a direction of belt travel of the conveyor belt along an upper carryway and returning along a lower returnway, the diverter switch comprising:
- a shuttle having a first diagonal wall and a second wall and being laterally translatable between a first position and a second position;
- a fixed guide portion having first and second exit channels, wherein the second exit channel is bounded on one side by a lower exit guide wall and an upper exit guide wall at a level above the lower exit guide wall;
- wherein, when the shuttle is in the second position, a conveyor-belt follower is initially guided laterally as the conveyor belt advances in a direction of belt travel by contact between an upper bearing surface of the follower and the first diagonal wall, then guided by contact between a lower bearing surface of the follower and the lower exit guide wall, and finally guided by contact between the upper bearing surface and the upper exit guide wall along the second exit channel.
Dependencies are inferred from the claim text.