Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Automatic and/or material-triggered control
Patent
1997-10-24
1999-08-17
Osele, Mark A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Automatic and/or material-triggered control
156510, 156529, 156545, B26D 538
Patent
active
059388862
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a machine for producing a board- or panel-shaped wooden element which consists of at least two parallel rows of bars and which is especially intended to be glued to at least one other board- or panel-shaped wooden element, thereby to form a building element for the production of a laminated wooden floor, such as a parquet floor.
In a prior-art method for producing a wooden element of the above type, the rows of bars are placed next to one another, whereupon a zigzag glue thread is applied along the joint between the rows in each pair of adjacent rows, thereby to join the latter. The glue thread is applied on that side of the bars which is to face the board- or panel-shaped wooden element to which the wooden element produced as above is later to be glued. The zig-zag glue thread applied is able to keep the adjacent bar rows together when the bars are relatively thin. However, this known method of production cannot be employed when the bars have a thickness exceeding approximately 1 mm, since the resulting board- or panel-shaped wooden element then cannot be handled in a suitable fashion without breaking.
In a known manner for producing a board- or panel-shaped wooden element which is of the above type and whose bar rows are kept together in a reliable fashion even when the bars have a thickness of a few millimetres, the bar rows are placed next to one another, and a strip of adhesive tape is applied on each pair of adjacent rows in parallel therewith and in such a manner as to cover the joint between the rows, thereby joining the latter.
The object of this invention is to provide a continuously operating machine for implementing the last-mentioned method.
According to the invention, this object is achieved by a machine which is characterised in that it has a feeding path for continuously feeding at least two adjacent rows of adjoining bars, a tape-applying device for applying a strip of adhesive tape on each pair of adjacent rows in parallel with these in such a manner that the strip of adhesive tape covers the joint between said rows in order to join the rows together, and a cutting device for cutting the continuous material web made up of the joined bar rows into predetermined lengths, said cutting device having a carriage which is reciprocatingly movable along the feeding path between a rear initial position and a front turning position, a cutting unit mounted on the rear portion of the carriage, and a stop means mounted on the front portion of the carriage, the distance between the cutting unit and the stop means being adjustable according to the aimed-at cutting length, that the stop means in the initial position of the carriage is so placed in relation to the feeding path that the material web will, during the feeding operation, come to be applied against the stop means with its front end so as to displace the carriage from its initial position to its turning position, that the cutting unit is adapted to perform a cutting operation during this displacement of the carriage, that the stop means is adapted, before the carriage reaches its turning position, to be removed from the feeding path, thereby to release the cut-off length of material web so that this can be discharged from the machine, that a discharge conveyor is adapted to discharge the cut-off length of material web at a speed exceeding that at which the material web is fed in the remainder of the machine, and that a return means is adapted to return the carriage to its initial position.
The invention will now be described in more detail with reference to the accompanying drawings, in which
FIG. 1 is a schematic side view showing a machine according to the invention;
FIG. 2 is an enlarged side view showing the inlet end of the machine;
FIGS. 3, 4 and 5 are side views showing on a larger scale a cutting device forming part of the machine of FIG. 1, said cutting device being shown in a rear initial position, an intermediate position and a front turning position; and
FIG. 6 is a top plan view showing part of a woo
REFERENCES:
patent: 2687754 (1954-08-01), McFall
patent: 3547735 (1970-12-01), Ortel
patent: 3616065 (1971-10-01), Larson
patent: 5009740 (1991-04-01), Yanai
Osele Mark A.
Tarkett AB
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