Method and apparatus for feeding lumber
First Claim
1. A method for feeding side boards that are cut from a piece of lumber with a device including at least one side guard for holding a board against a piece of lumber from which it was cut, a first conveyor for transferring the piece of lumber and side board to the side guard, a transverse conveyor for conveying side boards, stop means for holding boards on the transverse conveyor from moving on the transverse conveyor and at least one dropping flap which is movable to direct a side board from the first to the transverse conveyor, comprising, opening the side guard to release a side board from a piece of lumber, positioning the dropping flap to direct the side board onto the transverse conveyor, and moving the stop means into a path of the side board on the transverse conveyor to shift the side board on the transverse conveyor.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a method and apparatus for feeding lumber, especially in connection with a four-band saw for separating and feeding side boards. The problem in four-band sawing is how to separate the boards of a pair of side boards sawed off from the sides of a log or block for further processing such as trimming. This problem is solved so that the side boards that are sawed off from the log are dropped by opening side guards and then directed the side boards by means of adjustable dropping flaps onto a transverse conveyor so that they remain on the conveyor with the cant edge focus up. The boards are then piled on top of each other and/or in a laminating fashion. The side boards are arranged, by shifting them against transient stops of the transverse conveyor, into a pile wherefrom the side boards can be suitably fed further by means of stopping members arranged in connection with the conveyor on a sloping plane. The stopping members can be adjusted into at least two different positions. In the first position the uppermost board of the pile of boards continues its movement but the rest are stopped. In the second position the next side board is released, and the rest are held back. This continues until all the boards are fed.
9 Citations
13 Claims
- 1. A method for feeding side boards that are cut from a piece of lumber with a device including at least one side guard for holding a board against a piece of lumber from which it was cut, a first conveyor for transferring the piece of lumber and side board to the side guard, a transverse conveyor for conveying side boards, stop means for holding boards on the transverse conveyor from moving on the transverse conveyor and at least one dropping flap which is movable to direct a side board from the first to the transverse conveyor, comprising, opening the side guard to release a side board from a piece of lumber, positioning the dropping flap to direct the side board onto the transverse conveyor, and moving the stop means into a path of the side board on the transverse conveyor to shift the side board on the transverse conveyor.
-
5. An apparatus for feeding and separating side boards having cant edges and being cut from a piece of lumber from a four-band saw, comprising:
-
a first conveyor for conveying a piece of lumber with side boards; a side guard on each side of said first conveyor for holding side boards on each side of a piece of lumber, said side guards being movable to drop side boards from the piece of lumber; a dropping flap located below each side guard and having a slop which is adjustable; at least one transverse conveyor having a top for receiving side boards from said dropping flaps with cant edges of the side boards positioned upwardly and the side boards piled on top of each other on said transverse conveyor; a sloping plane associated with said transverse conveyor and extending parallel thereto for receiving side boards in piles from said transverse conveyor; and stopping members associated with said slope plane and movable into a plurality of positions for selectively releasing one side board at a time from a pile of side boards on said transverse conveyor; said side guards and dropping flaps being movable to release and direct side boards from a piece of lumber onto said at least transverse conveyor. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
-
Specification