Palletiser for loading and packaging unstable containers

Abstract

The innovation disclosed herein is an improved palletiser for loading and packaging unstable articles, such as plastic, glass, steel, aluminum, etc. containers onto a pallet for bulk storage and/or transport. The innovation includes a pallet station having a pallet housing that receives pallets, a layer pad store substantially aligned with the pallet housing, a container lifting sub-assembly that receives a predetermined row of containers, a pusher assembly that urges the predetermined row of containers onto a pallet, and a layer pad transfer assembly.

1 . A palletiser system for efficient loading and packaging of unstable items such as plastic or glass bottles and the like containers, the palletiser system including:
 a first pallet station including:
 a pallet housing for receiving in-feed of a pallet(s) from a pallet in-feed path, the pallet housing having a floor portion for supporting a pallet thereon, the floor portion being movable between a pallet receiving position and a container receiving station in a first pathway by a first lifting means in the first pallet station, wherein in a loading condition the pallet is raised to the container receiving station; 
 a layer pad store aligned substantially with and in spaced apart relation to the pallet housing, the layer pad store being adapted to receive a store of layer pads for placement over a layer of containers on a pallet; 
 a passageway intermediate the pallet housing and layer pad store for communication with a container in-feed; 
 a container lifting sub-assembly mounted within the passageway, wherein the container lifting sub-assembly includes a movable platform for receiving a predetermined row of containers from the container in-feed, the movable platform adapted to move by a second lifting means between a container in-feed condition and a container transfer station located adjacent the container receiving station, whereby the movable platform is raised by the lifting means to the container transfer station when a predetermined row of containers is detected on the movable platform, and wherein the movable platform defines a second pathway within the first pallet station substantially parallel to the first pathway; 
 a pusher assembly including a pusher arm member mounted within the first pallet station adjacent the container transfer station, the pusher arm being reciprocally operable in a third pathway above and in a transverse plane to the first and second pathway to urge a predetermined row of containers on the container receiving platform at the container transfer station onto a surface portion of the pallet immediately adjacent thereto, whereby the movable platform is transferred to the container in-feed condition following transfer of the predetermined row of containers for receiving a second row of containers in a repeated cycle; 
 a layer pad transfer assembly located adjacent the layer pad store, the layer pad sub-assembly including a layer pad transfer means whereby when a predetermined layer of containers is formed on the pallet, the layer pad transfer means is actuated by the layer pad assembly to engage a layer pad from the layer pad store and transfer the layer pad over and onto the layer of containers in a fourth pathway within the first pallet station substantially parallel to the third pathway, whereby the layer pad provides a fresh surface thereon for a second and subsequent layers of containers; 
 wherein when a layer pad is placed over a layer of containers on the pallet, the floor portion of the pallet housing is incrementally lowered within the pallet housing to receive a second and progressive layers of containers, whereby when a predetermined number of layers is stacked on the pallet, the pallet is automatically lowered within the pallet housing to the pallet receiving position to allow transfer of the pallet to an exit pathway, and receipt of a replacement pallet in a cyclical manner. 
   
     
     
         2 . The palletiser system for efficient loading and packaging of unstable items such as plastic or glass bottles according to  claim 1 , further including a bottle in-feed conveyor for transferring multiple containers to the first pallet station through the passageway, the in-feed conveyor having a conveying portion configured to enter the passageway in a direction substantially transverse to the pallet in-feed path. 
     
     
         3 . The palletiser system for efficient loading and packaging of unstable items such as plastic or glass bottles and the like containers according to  claim 1  further including one or more palletiser stations in a series having aligned passageways for receipt of an in-feed conveyor, wherein the in-feed conveyor includes a plurality of vertically spaced and parallel container in-feed lines linking each pallet station such that in a single pass each container receiving station can receive a plurality of containers. 
     
     
         4 . The palletiser system according to  claim 1 , wherein when a predetermined number of containers forming a row of containers is received on a bottle receiving platform at the containers receiving station, the movable platform is raised by the second lifting means to a predetermined level within the first pallet station located adjacent the pallet when the pallet is at the bottle receiving station. 
     
     
         5 . The palletiser system according to  claim 1  further including a pallet in-feed sub-assembly for transferring a feed of pallets from a pallet store, wherein the pallet in-feed sub-assembly includes a transfer means such as a track or roller system electrically operable to transfer a pallet along the path for loading onto the floor portion of the pallet housing, and wherein the floor portion of the pallet housing includes a track or roller system adapted to cooperate with the in-feed path to allow automatic loading of a pallet onto the floor portion. 
     
     
         6 . (canceled) 
     
     
         7 . The palletiser system according to  claim 1 , wherein the layer pad transfer assembly includes a subassembly mounted within the pallet station above the layer pad store for supporting sliding movement of the layer pad transfer means between a pick-up and transfer conditions, wherein the transfer means is adapted to pick up and locate a top layer pad from the layer pad store on to the layer of containers on the pallet. 
     
     
         8 . The palletiser system according to  claim 6 , wherein the layer pad transfer means includes:
 a vacuum head assembly comprising a vacuum generator, suction cups and a frame;   a head frame guided cylinder for adjusting the height of the head assembly; and   a gantry linear drive for providing substantially horizontal movement to the head assembly between the layer pad store and the pallet in a bottle receiving position.   
     
     
         9 . The palletiser system according to  claim 1  further including a pallet out-feed path for transferring a fully loaded pallet exiting the pallet housing of the pallet station to a further processing station downstream therefrom, and wherein the out-feed path includes a transfer means, which cooperates with the track or roller of the floor portion. 
     
     
         10 . The palletiser system according to  claim 1  further including a plastic wrapping station intersecting the pallet out-feed path, whereby the wrapping station includes a rotatable platform and a plastic wrapping structure, on which there is located wound plastic wrap material, wherein an initial portion of the wrap material is contacted with the loaded pallet and thereafter the platform is rotated so that the plastic wrap material is unwound from the wrapping structure about the loaded pallet. 
     
     
         11 . The palletiser system according to  claim 1  further including a bottle manufacturing apparatus upstream from the first pallet station, wherein bottles manufactured are dispensed by the bottle manufacturing apparatus onto the one or more bottle in-feed conveyor(s) for transfer of the bottles to one or more pallet stations for loading onto a pallet. 
     
     
         12 . A palletiser system for efficient loading and packaging of unstable items such as plastic or glass bottles and the like containers, the palletiser system including:
 a series of palletiser stations for receiving bottles and pallets for substantially continuous loading, the stations including:
 a pallet housing for receiving one or more pallets from a pallet iη-feed, the pallet housing includes a movable floor portion, the floor adapted to be raised and lowered by a lifting means within the palletiser station between a pallet receiving condition and a bottle receiving location at a predetermined level, whereby the movable floor defines a first pathway within the pallet station, 
 a layer pad store for receiving a stack of layer pads for placement over a layer of bottles on a pallet, the layer pad store being spaced apart from and in substantial alignment with the pallet housing; 
 an entrance and exit opening in each of the pallet stations defining a passageway therebetween intermediate the pallet housing and layer pad store, wherein the series of pallet stations is aligned so that the passageways form a thoroughfare; 
 an in-feed conveyor assembly for transferring bottles to each pallet station in a single pass including a plurality of vertically spaced and parallel bottle in-feed lines linking each line to a pallet station via the thoroughfare, wherein at least a portion of the in-feed lines extend in a pathway substantially transverse to the pallet in-feed; 
 a bottle lifting sub-assembly mounted within the each passageway, wherein the bottle lifting sub-assembly includes a movable platform for receiving a predetermined row of bottles from at least one of the bottle in-feed lines, the movable platform adapted to move by a second lifting means between a bottle in-feed condition and a bottle transfer station located adjacent the bottle receiving station, whereby the movable platform is raised by the lifting means to the bottle transfer station when a predetermined low of bottles is detected on the movable platform, and wherein the movable platform defines a further pathway within the first pallet station substantially parallel to the first pathway; 
 a bottle pusher means movably mounted to the each palletiser station adjacent the layer pad store, and operable between a stationary mode and a pushing mode, whereby in a stationary mode sufficient space is provided between the floor portion of the pallet housing and the pusher means for receiving the bottle receiving platform therebetween in a bottle dispensing position whereby the pallet and platform form a substantially continuous surface, and whereby in a pushing mode the pusher means moves over a fourth defined pathway which intersects with the second pathway for urging a row of bottles on the bottle platform onto a surface of the pallet; 
 a layer pad applicator sub assembly above the layer pad store including a layer pad transfer means, wherein when a predetermined layer of bottles is placed on a sxuface of the pallet, the layer pad transfer means is actuated to take a layer pad from the layer pad store and transfer the layer pad over and onto the layer of bottles in a fifth defined pathway overlapping the first defined pathway; 
   whereby when a predetermined layer of bottles is loaded onto a surface of the pallet and a layer pad is disposed on the predetermined layer, the floor portion of the pallet housing is lowered incrementally within the housing so that a fresh surface of layer pad is presented for receiving the next layer of bottles from the bottle loading platform.