JPH10329105A - Veneer cutting control device for longitudinal veneer slicing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a combining device and stabilize productivity by producing a longitudinally sliced veneer for an original sheet and a longitudinally sliced veneer for a core sheet in the order of combination at a back stage of production. SOLUTION: This longitudinal slicing machine feeds veneers one by one to trim both ends of the veneer in parallel with its fiber direction in a direction in which the fiber runs and scarf-cuts the front edge part and the rear edge part of the veneer to join the scarfed parts with an adhesive and further, cuts the joined veneers to the fixed length by specified dimensions to laminate the cut veneers. In this case, a calculation is delayed or started depending upon a signal for cutting to the fixed length to be connected by a previously set fixed length cutting device 11. Further, the total length of the veneers which are present between the fixed length cutting device 11 and a veneer feeder 4 is detected to determine that the total length reaches the fixed length size, based on a detection signal to be connected by a veneer detector 15 installed on the outlet lateral part of the veneer feeder 4. This operating sequence is performed by a switching control circuit 14 to select between the operations by a feeder 3 for an original sheet and by a feeder 4 for a core. Thus the original sheet 1 and the core 2 are selectively fed from the feeders 3, 4 to selectively cut the original plate 3 and the core 2 into longitudinally sliced veneers 8c for the original sheet which become the front sheet or the back sheet and a longitudinally sliced veneer 8c for the core which becomes the core 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parallel plywood obtained by laminating and bonding a large number of fibers with the fiber direction oriented in the length direction of the product.
Or, a long veneer veneer that extends to a thickness of about 1 to 4 mm and a length of about 1.5 to 6 meters required when producing a long veneer laminated material commonly called LVL or LVB, Normal 1 meter square veneer veneer or 1 meter x
In order to obtain from a rectangular veneer veneer of about 2 meters, a large number of square or rectangular veneer veneers are vertically stripped in the fiber direction to form a long veneer veneer, and a front plate, a core plate, and a back surface are set in a preset order. The present invention relates to a veneer veneer veneer veneer for producing veneer veneer veneer in order.

[0002]

2. Description of the Prior Art A conventional veneer veneer of this kind produces a veneer veneer veneer for an original plate such as a front plate or a back plate which has no defects such as holes or cracks used on the front and back surfaces of a product. The vertical stripping device for the original plate is provided separately from the vertical stripping device for the original plate, and the vertical stripping device for the core plate for producing a single vertical stripping device for the core plate which may have some defects such as holes and cracks that do not appear on the surface. And vertical core veneer veneer veneer, respectively, and the mechanism of the pre-set by setting the stacking location of the veneer veneer veneer veneer and the core veneer veneer veneer separately in the subsequent mechanism. In accordance with the above, and the structure was pasted.

[0003]

The above-mentioned conventional apparatus is produced by separately providing a vertical stripping apparatus for an original plate and a vertical stripping apparatus for a core plate used for a front plate or a back plate, respectively, due to differences in quality and production amount as described above. In addition, the later stage mechanism sticking device is provided with a stacking place of the vertical veneer veneer for the base plate and a stacking place of the vertical veneer veneer for the core plate, which are to be the front plate or the back plate. In the production process of vertical veneer veneers, such as when the number of laminations is required to be 12 or more, such as a laminated veneer for structural veneers, the original veneer must be used in accordance with the production volume. A vertical peeling device for the core plate is required two to three times as much as the vertical peeling device, and each vertical peeling veneer produced by each vertical peeling device can be used as a vertical peeling single plate for the original plate even in a later-structured bonding device. Separate stacking area and core board vertical shingle stacking area are provided separately and set in advance. It requires complicated mechanism attaching apparatus such as that must mechanism adhered to feeding to each other according to the mechanism the order, such as reduction in productivity due to vast location and number of trouble shooting had trouble frequently.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to feed out veneer veneers one by one and trim both sides of the veneer veneer parallel to the fiber direction along the fiber direction. In addition, the leading edge and the trailing edge in the fiber direction are scarf-cut, the scarf portion is joined with an adhesive, and the scarf is cut to a predetermined size and deposited in a veneer veneer vertical stacking machine. The delay or the operation is started by the fixed length cutting signal from the fixed length cutting device, and the detection signal from the single plate detector provided at the outlet side of the single plate feeding device is used to change the length of the single length feeding device from the fixed length cutting device. Detecting that the sum of the lengths of the single plates interposed between them has reached the fixed size, a switching control circuit that switches the operation of the supply device for the original plate and the supply device for the core plate is provided, and the original plate and the core plate are separated from the supply device. By selectively feeding out the front or back Characterized in that that was to isolate the vertical rebate veneer and the core plate and comprising a core plate for longitudinal strip veneer plate precursor.

[0005]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing an embodiment of the present invention.

1 is an original plate such as a front plate or a back plate, and 2 is a core plate. Reference numeral 3 denotes a suction box feeder which feeds the sheets 1 one by one from the uppermost surface of the pile in the fiber direction, and a suction box 3a.
Cylinder 3b and conveyor 3c for raising and lowering each time
Etc. Reference numeral 4 denotes a core plate supply device. A suction box 4a for feeding core plates 2 similar to the original plate supply device 3 one by one from the uppermost surface of the pile in the fiber direction, an air cylinder 4b for raising and lowering the suction box 4a each time, and a conveyor 3c. Etc. 5 comprises a circular saw, a slitter, etc., which cuts both sides parallel to the fiber direction of each veneer along the fiber direction while transporting the veneer by a well-known transport conveyor or the like and trims the length to a predetermined size. It is a cut-and-sew. Reference numeral 6 denotes a relay conveyor capable of intermittent conveyance including a roll conveyor, a brake motor, a servomotor, and the like, which relays the conveyance of the original plate 1 or the core plate 2 cut by the cut saw and temporarily stops at a predetermined position. The relay conveyor 6 may be provided with a well-known alignment mechanism including an air cylinder and an alignment plate (not shown) for aligning one or both edges cut by the cut saw 5. 7
After holding the both ends in the direction perpendicular to the transfer direction in the vertical direction by a holding bar or the like with a scarf cutting device using a suitable pressing force, the circular saw 7a is moved so that one of the edges is on the upward scarf surface. The other one edge is cut into a downward scarf surface to obtain a scarf veneer 8 having a predetermined length. Reference numeral 9 denotes an adhesive application device which applies a thermoplastic adhesive such as hot melt or a thermosetting adhesive such as urea resin or modified phenol resin to the upwardly cut scarf surface of the scarf veneer 8. . Reference numeral 10 denotes a pressing device, in which an upwardly directed scarf surface coated with an adhesive is brought into contact with a downwardly directed scarf surface of the scarf veneer 8a which has been waiting in advance, and this is pressed at a predetermined pressure by a pressing plate from above and below. , A cold strip or hot strip at a predetermined temperature to obtain a continuous strip-shaped veneer veneer 8b. Reference numeral 11 denotes a standard-size cutting device for sequentially performing standard-size cutting at a predetermined standard size to obtain a standard-size vertical veneer veneer 8c.

Each of the above mechanisms, namely, the cut-saw 5, the relay conveyor 6, the scarf cutting device 7, the adhesive coating device 9,
Compression device 10 and fixed-size cutting device 11 are disclosed in Japanese Patent Application No. 9-3130.
The apparatus disclosed in No. 0 is used, and the detailed description thereof is omitted.

The fixed-size cutting device 11 includes a fixed-size cutting device 1.
1, a detection signal from a detector 11a such as a rotary encoder for detecting the transport amount of the veneer veneer 8b disposed at a predetermined position on the carry-in side is transmitted to the fixed-length cutting control circuit 11b, and the predetermined setting is performed. Each time the value is reached, it is transmitted to an intermittent drive device (not shown) for operating the knife, and cuts the continuous strip-shaped veneer veneer 8b to a fixed size. Reference numeral 14 denotes a switching control circuit, which includes a detector 11a and a fixed-length cutting control circuit 11.
b, the detector 11 is connected to the supply device 3 for the original plate and the supply device 4 for the core plate and each time a fixed-size cutting signal before a preset number of laminations is transmitted from the fixed-size cutting control circuit 11b.
The calculation is started based on the detection signal of a, and the detection signal of the single-plate detector 15 provided between the core plate supply device 4 and the cut-saw 5 is used to change the feeding from the core plate supply device 4 to the previous one. The feed from the feeder 3 is performed. For example, the standard-size cutting dimension is set to 6 m, and as shown in the figure, the distance between the standard-size cutting apparatus 11 and the pressing apparatus 10 is 2 m, and the scarf cutting dimension is 1 m, and the distance between the pressing apparatus 10 and the detector 15 is as shown. 2m + 1m × 4 because the number of veneers intervening is 4
Since the number of sheets becomes 6 m and the detection signal from the detector 15 is transmitted to the switching control circuit 14, the switching signal is transmitted from the switching control circuit 14 to the supply devices 3 and 4 for the original plate and the core plate, respectively. The supply veneer is switched from the original plate or from the original plate to the core plate.

In general, it is not allowed to insert a veneer veneer 2 for a core plate into a veneer veneer 8c composed of an original plate 1 such as a front plate or a back plate. Are allowed to enter, so that the supply of the core plate and the original plate is controlled so as to correspond to this.

Reference numeral 12 denotes a reversing device, which allows the sheet to pass as it is or reversely passes it according to a preset order according to the number of stacks and tree species and the state of vegetation. Selective inversion control with minimal warpage is performed by selectively inverting according to the species of tree and the state of rash. Reference numeral 13 denotes a stacking device, which is received from the lower surface by a gate bar or the like which can be moved in and out in synchronization with the transport of the fixed-length vertical veneer plate 8c in accordance with the order selected and inverted in the inverting step 9 and from above to a stacking place including the lifting table 13a. They are deposited in order. Reference numeral 16 denotes a transfer device (not shown), which comprises a holding bar, a guide rail, etc., which raises and lowers the center of the original plate 1 or the core plate 2 from above and below by an air cylinder or the like, and includes the relay conveyor 6 and the scarf cutting device 7. The veneer is transferred between the scarf cutting device 7 and the pressing device 10 so that the transfer state of the veneer does not shift. Reference numeral 17 denotes a clamp transfer device which clamps the right and left vertical directions so as to prevent the joining surfaces joined by the pressing device 10 from shifting, and transfers the vertical single plate 8b from the pressing device 10 to the fixed-size cutting device 11 side. , Air cylinder,
It consists of a servomotor and the like.

The detector 11a disposed on the carry-in side of the standard-size cutting device 11 for detecting the transported amount of the veneer may be located at any position where the transported amount of the veneer can be detected. It is needless to say that the present invention is not limited to those disclosed in the above description and drawings as long as it is suitable for the purpose of transporting or processing each mechanism veneer.

Next, the operation will be described in more detail with reference to the drawings.

For example, a case of producing a 12-ply product will be described. First, the original plate 1 serving as the back plate is sequentially fed out from the original plate supply device 3 to the cut-saw 5, and while being conveyed by the cut-saw 5, both sides parallel to the fiber direction of the veneer are cut so that the length in the direction orthogonal to the fiber direction is reduced. It is trimmed to a predetermined size. Next, the veneer stops at a predetermined position on the relay conveyor 6 composed of a roll conveyor or the like, and the cut surface is aligned. The aligned veneer 1 is transported to a predetermined position of the scarf cutting device 7 by a transport device 16 which transports the veneer 1 from above and below so as not to shift the transporting state. Although not shown, the scarf cutting device 7 presses and clamps the vicinity of both sides in the fiber direction from above and below, and then operates the circular saw 7a to scarf cut one on an upward slope and the other on a downward slope. Scarf veneer 8 having a predetermined length in the direction
Get. When the scarf cutting of the scarf cutting device 7 is completed, similarly to the transfer of the veneer from the relay conveyor 6 to the scarf cutting device 7, the scarf veneer 8 is nipped and transferred from above and below so as not to be displaced. By 16, it is transferred to a predetermined position of the pressing device 10. The transfer device 16 is an adhesive coating device 9 disposed between the scarf cutting device 7 and the pressing device 10 during transfer to a predetermined position of the pressing device 10.
The adhesive is discharged and applied to the upward scarf slope of the scarf veneer 8 and stopped at a predetermined position of the pressing device 10.
The leading scarf veneer 8a is overlapped with the trailing edge of the preceding scarf veneer 8a and pressure-bonded. Since the fixed length cutting device 11 is initially reset and its signal is first transmitted to the switching control circuit 14, the switching control circuit 14 detects the original 1 supplied by the detector 15 one after another, and switches the detection signal to the switching control circuit 14. When the sum of the lengths of the veneers 1 interposed between the standard-size cutting device 11 and the detector 15 disposed near the entrance of the cut-and-sew 5 reaches the standard size, the calculation is performed each time the signal is transmitted to the circuit 14. The switching control circuit 14 suspends the supply operation from the original plate supply device 3 and stops the supply operation for the core plate supply device 4.
To the cut-and-sew 5. As a result, the point where the last original sheet 1 that has been switched arrives immediately below the fixed-size cutting device 11 and is cut is an intermediate portion of the original sheet 1 and the original sheet is always included in the supplied vertical core veneer veneer. A part of the veneer 1 will be interposed, but a vertical veneer veneer 8c composed of only the core plate 2 will be formed from the second layer to the tenth layer. The twelfth layer after being cut so that the original plate 1 is interposed becomes a vertical veneer veneer 8c for the front plate composed of only the entire original plate 1, but one mechanism is completed,
Subsequently, the supply of the original plate 1 is continued to join the vertical peeling veneer 8c for the second backing plate, and then a predetermined number of veneer veneer veneers for the core plate are produced, and the veneer veneer for the front plate is produced. 8c is repeatedly produced. The vertically cut veneer veneer 8c cut to a fixed size is deposited on the deposition device 13 by, for example, reversing the vertical veneer veneer 8c for the front plate by the reversing device 12 in the subsequent stage.
In order to prevent warpage of a product, vertical single veneers for a core plate are inverted and deposited one by one. As a result, on the stacking device 13, veneer veneers having a predetermined length and a predetermined length, which are trimmed and aligned in a direction orthogonal to the fiber direction, are stacked neatly in a stacking state arranged for every predetermined number of laminations. Will be.

[0015]

As described above, according to the present invention, veneer veneers are fed out one by one, and both sides parallel to the fiber direction of the veneer veneers are trimmed along the fiber direction and the leading edge in the fiber direction is cut. And the rear edge portion is scarf-cut, the scarf portion is joined with an adhesive, and the veneer veneer is vertically cut to a predetermined size and deposited on a predetermined length cutting device. The delay or the operation is started by the cut-off signal of the veneer, and the length of the veneer interposed between the cut-off device and the veneer is detected by the detection signal from the veneer detector provided at the exit side of the veneer supply. A switch control circuit that switches the operation of the supply device for the original plate and the supply device for the core plate by detecting that the total sum has reached the fixed size is provided, and the original plate and the core plate are selectively fed out from the supply device. Or the original veneer veneer veneer and core plate This is a drawback of the prior art because the front plate, the core plate, and the back plate are cut to a fixed size and deposited in a predetermined number of sheets and in a mechanism order. Many vertical stripping devices and complicated mechanism sticking devices are no longer required, and also a vast installation place and many troubles that require many troubles can be wiped out. Therefore, there is an effect that the assembly accuracy, productivity and yield in the subsequent bonding step are greatly improved, and a single-ply laminated material can be stably obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of the whole process of the present invention.

[Explanation of symbols]

 Reference Signs List 1 original plate 2 core plate 3 original plate supply device 3a suction box 3b air cylinder 3c conveyor 4 core plate supply device 4a suction box 4b air cylinder 5 cut saw 6 relay conveyor 7 scarf cutting device 7a circular saw 8 scarf single plate 8a scarf single plate 8b Vertical single veneer 8c Vertical single veneer 9 Adhesive coating device 10 Compression device 11 Standard cutting device 11a Detector 11b Standard cutting control circuit 12 Reversing device 13 Stacking device 13a Elevating table 14 Switching control circuit 15 Single plate detection Container 16 Transfer device 17 Clamp transfer device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshimichi Nishiyama 5-1-1, Nittacho, Takahama-shi, Aichi Prefecture Hashimoto Electric Industry Co., Ltd.

Claims (1)

[Claims] 1. A veneer veneer is fed out one by one, and both sides parallel to the fiber direction of the veneer veneer are trimmed along the fiber direction, and the front edge and the rear edge in the fiber direction are scarf-cut. In a veneer veneer vertical stacking machine in which the scarf part is bonded with an adhesive, cut into fixed lengths for each predetermined dimension, and deposited, a delay or calculation is performed according to a fixed length cutting signal from a predetermined fixed length cutting device. Started, the sum of the length of the veneer interposed between the veneer and the veneer reached the standard size by the detection signal from the veneer detector provided on the exit side of the veneer supply. A switching control circuit for detecting the fact and switching the operation of the supply device for the original plate and the supply device for the core plate is provided, and the original plate and the core plate are selectively fed out from the supply device, thereby making the original or vertical plate for the original plate to be the front or back. Separates the vertical veneer veneer for the core plate that becomes the core plate Veneer veneer veneer veneer cutting machine.