Woodworking – Process – Securing
Patent
1990-10-25
1992-01-14
Bray, W. Donald
Woodworking
Process
Securing
144 2R, 144242M, 144245R, 144249A, 144350, 144355, 156299, 1563041, 156566, B27D 100
Patent
active
050801546
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a method and apparatus for laying out glue smeared wooden stave members on a receiving area in preparation for production of a wooden plate body formed by the stave members in a compressed and glued condition.
BACKGROUND OF THE INVENTION
Generally a procedure for laying out stave members on a receiving area is normally performed purely manually even though such approach is somewhat inconvenient. While mechanical auxiliaries have been proposed, such mechanical auxiliaries have not met with any particular success because it can hardly be relied upon to push a layer of stave members across the receiving areas.
It has been suggested to perform a laying-out of a single row of stave members in a side-by-side relationship on a support which could then be moved across the receiving area and be withdrawn while the layer of stave members is held in position so as to be brushed off to fall down onto the receiving area; however, the mere withdrawal of a support in relationship to the glue smeared stave members may disarrange the stave members and, all things considered, the delivery to the receiving area takes place in a rather haphazard fashion.
SUMMARY OF THE INVENTION
The aim underlying the present invention essentially resides in providing a method by which a laying out of stave members can be effected automatically in a safe and suitable manner. In accordance with advantageous features of the present invention, a conveyor belt is employed which, from a stave-member receiving front end, is moved a step rearwardly every time a transverse row of stave members has been laid out thereon, and the stave members are lead to this area by a stepwise transversely movable feeding carriage which individually receives the stave members and leads the stave members through glue applying side rolls to feed onto a front of the receiving belt, with the feeding carriage and/or the conveyor chassis having pusher means located above the conveyor belt so as to move in synchronism with the carriage in order to push each newly introduced stave member laterally against the proceeding introduced stave member or against a fixed side land along the conveyor belt, respectively.
By virtue of the above noted features of the present invention, the individual stave members, upon an appropriate inspection, can then just be delivered to the carriage which will operate to pass the stave members through a suitable glue applicator to enable an easy individual introduction on the receiving area, where the individual stave members are displaced sidewards to engagement against the latest introduced stave member. Whereas, it may be difficult to displace a whole row of already laid out stave members at the receiving area due to the adhesion of extravasated excess glue, there is no corresponding problem associated with a lateral displacement of a single layer of stave members; therefore, a row of closely packed stave members can easily be formed when it is only every newly introduced stave member that requires a lateral displacement for successive forming of a closed row of stave members.
When a width of the receiving band has been filled with stave members, the receiving band can be activated by being moved a suitable step forward such that a new row of stave members can be accommodated at the front end of the receiving band. Subsequently, the filled conveyor belt can be utilized directly as a carrier for the rows of stave members in a hot press, where the receiving band can be brought to deliver the rows of stave members to a special carrier surface in such a press.
The feeding carriage moves transversely along the front end of the conveyor belt; however, according to the invention, it achievable that the stave members, in a desirable manner, are delivered from a stationary area, for example, to a delivery conveyor extending along the direction of motion of the carriage next to the carriage.
The carriage may include a gripping bar projecting over the delivery conveyor for stopping the stave me
REFERENCES:
patent: 3277939 (1966-10-01), Scott
patent: 3616090 (1971-10-01), Larson
patent: 3990937 (1976-11-01), Knowles
patent: 4342615 (1982-08-01), Koch, II
patent: 4797169 (1989-01-01), Aizawa et al.
Bray W. Donald
H. Kallesoe Maskingabrik A/S
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