US 4,667,953 AGranted

Sheet stacker

AssigneeMitsubishi Jukogyo Kabushiki Kaisha

InventorsTadashi Hirakawa, Masashi Waseda, Toshiaki Kusubayashi, Isao Tokumaru

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Abstract

A sheet stacker for a corrugation machine having a cutter to widthwisely cut off a continuously manufactured corrugated cardboard web into corrugated cardboard sheets, and then transfer, stack and eject the sheets. The sheet stacker comprises: a shingling conveyor arranged downstream of an outlet of the cutter for shingling the sheets; braking apparatus arranged above the shingling conveyor for braking the sheets transferred from the cutter; a first transfer conveyor arranged downstream of the shingling conveyor and which is vertically pivotable about its end portions on the upstream side thereof; a stopper disposed between the shingling conveyor and the first transfer conveyor for selectively stopping the sheets; at least one second transfer conveyor arranged in the downstream of the first transfer conveyor; a sheet stacking mechanism disposed downstream of the second transfer conveyor and which is vertically movable for receiving and stacking the sheets discharged from the second transfer conveyor; a drive mechanism for moving the sheet stacking mechanism up and down at a variable speed; and an adjustment mechanism for controlling the drive mechanism in response to the magnitude of a sheet stacking speed to thereby adjust a descent speed of the sheet stacking mechanism.

Claims10

Dependent claims

A sheet stacker for a corrugation machine which widthwisely cuts off a continuously manufactured corrugated cardboard web with a cutter into corrugated cardboard sheets, and transfers, stacks and ejects said sheets, comprising:

(a) a shingling conveyor arranged downstream of an outlet of said cutter for shingling said sheets;
(b) braking means arranged above said shingling conveyor for regulating a shingling length of the sheets on said shingling conveyor by braking the sheets transferred from said cutter;
(c) a first transfer conveyor arranged downstream of said shingling conveyor, said first transfer conveyor being vertically pivotable about end portions on the upstream side thereof for moving a downstream end thereof vertically downward to allow removal of defective sheets from said first conveyor;
(d) stopper means disposed between said shingling conveyor and said first transfer conveyor for selectively stopping sheets conveyed on said first transfer conveyor;
(e) at least one second transfer conveyor arranged downstream of said first transfer conveyor;
(f) sheet stacking means disposed downstream of said second transfer conveyor, said sheet stacking means being vertically movable for receiving said stacking the sheets discharged from said second transfer conveyor;
(g) drive means for moving said sheet stacking means up and down at a variable speed;
and
(h) adjustment means for automatically controlling said drive means in response to the magnitude of a sheet stacking speed to thereby adjust a descent speed of said sheet stacking means.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/769,335Filed 26 Aug 1985
Granted: 26 May 1987
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

B65H 33/12
Forming counted batches in delivery pile or stream of articles: by creating gaps in the stream
B65H 29/6618
Forming an overlapping stream: upon transfer from a first conveyor to a second conveyor advancing at slower speed
B65H 29/68
Delivering or advancing articles from machines; Advancing articles to or into piles: reducing the speed of articles as they advance
B65H 31/10
The articles being piled one above another: and applied at the top of the pile