US 6,629,661 B2 · Take-up reel, veneer reeling apparatus, tape feeding unit for veneer roll, veneer roll unwinding apparatus and a production method for laminated wood

Abstract

A take-up reel has a diameter equal to or more than 85 times a thickness of a veneer sheet wound thereon and equal to or more than 300 mm so as to be of a curvature of the take-up reel to reduce cracking in parallel to fiber orientations that occurs in winding a veneer sheet after drying on a winding surface of the take-up reel. A veneer reeling apparatus comprises: a take-up reel disposed in a veneer sheet reeling position in a rotatable manner; a drive roller disposed on the lower surface of the take-up reel, transmitting a driving force with a variable speed; a veneer dryer disposed upstream from the veneer sheet reeling position; a conveyor provided between the terminal end of the veneer dryer and the drive-roller in the veneer sheet reeling position; and a plurality of thread feeding mechanisms disposed at arbitrary spatial intervals along a length direction of the take-up reel for a veneer sheet, wherein a continuous dried veneer sheet or dried veneer sheets whose sizes are of a constant length or of a length at random are wound on the take-up reel to form a veneer roll with threads as guide by a frictional force of the drive roller. Further, pairs of two overlapping veneer sheets or sets of a pair of two overlapping veneer sheets and a single veneer sheet can be wound on the take-up reel in a composite form.

Claims18

Dependent claims

A tape feeding unit for a veneer roll which feeds a tape into between veneer sheets that is wound on a take-up reel comprising:

a vacuum chuck conveyor that guides the tape into between veneer sheets from a feed source;
a tape rack that is provided to a tape feed source, which has a plurality of tape housing rooms not only arranged in a movable manner in a direction almost at a right angle to a tape feed direction of the vacuum-chuck conveyor, but also respectively separated by partition members preventing falling of a tape roll to either of both sides and respectively having tape rolls accommodated therein that are each produced by winding a tape on a core;
which is intermittently moved over a distance equal to a pitch at which the tape housing rooms are arranged such that each of the tape housing rooms are sequentially located on a transport route of the vacuum-chuck conveyor;
and which is operated such that when a tape housing room arrives on the transport route, a tape is unwound from a tape roll through the front side thereof that is opened while a tape roll is rotatably supported and simultaneously prevented from falling to either of both sides by partition members;
and
a forward movement stopper member that is disposed in an adjacent manner to the tape rack downstream therefrom on the transport route of the vacuum-chuck conveyor, which stops a tape roll, after a tape housing room of the tape rack comes to be located on the transport route of the vacuum-chuck conveyor, and a tape roll in the tape housing room then moves forward by an extreme extent at which the tape roll does not disengage from partition members, and which controls a position of the tape roll such that the tape is unwound from the tape roll at a place where the tape roll has been stopped while being rotated by the vacuum conveyor.

3 more elements

A tape feeding unit for a veneer roll that feeds a tape into between veneer sheets wound on a take-up reel, comprising:

transport means that guides the tape into between veneer sheets from a feed source thereof;
a sideways control member that is provided to the feed source and which prevents a tape roll that is produced by winding the tape on a core from falling sideways;
and
a forward movement stopper member that is disposed at a forward position from the tape roll on a route of the transport means separately and independently from the sideways control member and blocks a forward movement of the tape roll while allowing feed rotation of the tape roll, and
wherein the forward movement stopper member comprises:
a first idling roller stopper that is located at a farther position from a transport surface of a vacuum conveyor and which is in contact with a tape roll of a larger diameter and rotates following rotation of the tape roll;
and a second idling roller stopper that is located at a closer position to the transport surface and which is in contact with a tape roll of a smaller diameter and rotates following rotation of the tape roll.

4 more elements

A tape feeding unit for a veneer roll that feeds a tape into between veneer sheets wound on a take-up reel, comprising:

transport means that guides the tape into between veneer sheets from a feed source thereof;
a sideways control member that is provided to the feed source and which prevents a tape roll that is produced by winding the tape on a core from falling sideways;
and
a forward movement stopper member that is disposed at a forward position from the tape roll on a route of the transport means separately and independently from the sideways control member and blocks a forward movement of the tape roll while allowing feed rotation of the tape roll, and
wherein the forward movement stopper member has an exit section through which, when a residual amount of a tape wound on a core of a tape roll is nothing or equal to or less than a predetermined amount in a last stage, the core is allowed to pass to a downstream side of a vacuum-chuck conveyor from the exit section;
and a core discharge unit that is disposed in the downstream side of the exit section and which discharges the core to a side of the vacuum-chuck conveyor.

3 more elements

A tape feeding unit for a veneer roll that feeds a tape into between veneer sheets which is wound on a take-up reel, comprising:

transport means that guides the tape into between veneer sheets from a feed source thereof;
a forward movement stopper member that is disposed at a forward position from the tape roll and blocks a forward movement of the tape roll while allowing feed rotation of the tape roll;
a tape cutter that is provided at a position protruding from a distal end of the transport means;
and
a tape roll rotation stop device that stops rotation of a tape roll at an upstream position from the forward movement stopper member.

2 more elements

Dependencies are inferred from the claim text.

Take-up reel, veneer reeling apparatus, tape feeding unit for veneer roll, veneer roll unwinding apparatus and a production method for laminated wood

Life of this patent

Take-up reel, veneer reeling apparatus, tape feeding unit for veneer roll, veneer roll unwinding apparatus and a production method for laminated wood

Life of this patent

Abstract

Claims18