JPH0725455B2 - Veneer veneer delivery method - Google Patents

Description

The present invention relates to a method for feeding a veneer veneer to be dried into a veneer dryer, and more specifically, a fiber log obtained by peeling a log log of wood to remove the defective part. This is a method of feeding a veneer veneer having an unspecified length (hereinafter referred to as an unspecified length) in a direction orthogonal to a net type dryer.

The multi-stage net-type dryer 20 as shown in FIG. 1 is a method of drying while transporting veneer veneer in a sandwiched state to endless nets 21 and 22 stretched vertically facing each other. In general, a plywood front plate that is continuously produced by peeling a log of raw wood with veneer lace (not shown), or a veneer for a veneer for a back plate is wound around a reel shaft 14 and once wound as a winding ball 13. It is suitable for storing and feeding the balls 13 onto the net 21 while unwinding the balls 13 to dry them.

However, this multi-stage net-type dryer 20 (hereinafter, simply referred to as a dryer) is a continuous single plate for middle plates, which is generally thick in the lower stage, because of the mechanism in which the transport speed of each stage is controlled independently. , Or a veneered veneer (not shown), which is produced until a round log is peeled off into a perfect circle, and the front and rear edges have irregular shapes, and the irregular scale veneer is cracked and rotted from the part near the core. , A fragile random veneer with many cracks, and a veneer veneer of an unspecified length such as a sized veneer with these defective parts removed by a clipper were inserted. In particular, in the case of this sized veneer, as shown in Fig. 2, the veneer deposited in advance in the veneer processing step is lifted to the vicinity of the dryer 20 and transferred by a roller conveyor (not shown), etc. It had been. In this case, the veneer veneer (hereinafter referred to as veneer) positioned on the front and rear on the net 21 that rotates at a constant speed should not be inserted so that the rear end edges of the veneer veneer and the veneer veneer are always close to each other or close to each other. Have difficulty. Furthermore, the veneer obtained from low-grade log logs that have many bends, rots, and crevices due to the recent severe depletion of the raw logs of Nanyo timber, the proportion of short-length veneers increases with the decrease of long-length veneers. The length has also become shorter. As a result, when short pieces are concentrated when inserting this veneer into the dryer, the operator's insertion pitch temporarily becomes difficult to follow the conveyance speed, or temporary insertion is interrupted due to an accident, etc. However, there was a problem that the filling efficiency was lowered.

Further, as is clear from FIG. 2, conventionally, the distance from the deposited veneer to the receiving position of the dryer 20 is different,
In particular, there is a drawback in that the one located at the rear is longer and the insertion requires more time.

The present invention has been made in order to eliminate the above inconvenience, a single plate having an unspecified length that is sequentially inserted into the guide roll, after alternately carrying in a plurality of stages of direction changing device,
Alternately take out to the carry-out conveyor in the right angle direction,
After narrowing the gap between the front edge and the rear edge on this carry-out conveyor and aligning the width, it is sent to the net dryer of the next stage,
On the other hand, it is intended to provide a method for feeding a veneer in which when the direction changing device is fully loaded with veneers, the stopper mechanism operates to prevent the veneer from being carried in.

Hereinafter, the present invention will be described with reference to the accompanying drawings. FIG. 3 is a schematic layout showing an example of an apparatus for carrying out the present invention. ₁ , 1a _{1 to} 1a ₄ , 1b, 1c ... Veneer veneer having an unspecified length, 2 is always The guide rolls 3, which rotate at a low speed, are movable up and down stopper mechanisms for preventing the subsequent veneers from being carried in when a veneer is fully loaded in the direction changing device described later.
Reference numeral 4'is a detection device such as a photoelectric tube, a micro switch, a limit switch, etc. for detecting one piece of veneer placed on the upper stage or the lower stage of the direction changing device which will be described later, and 5 is a pinch roll constantly rotating at high speed. 6 is the detection device 4, 4 '
Is a transport sorting mechanism that swings according to the detection signal of
It is mounted with its tip facing away from the conveying direction. 7 is a roller conveyor 8, 8'which is vertically arranged in two rows and is movable up and down.
A direction changing device, in which belt conveyors 9 and 9'are provided orthogonally to each other, 10 is a front end edge and a rear end of veneers carried in intermittently driven by a signal from a detection device 11 installed at a start end. Carry-out conveyor, 11, 12, 12 ', which fills the gap between the edges and moves the width
Is a detection device such as a photoelectric tube, a micro switch, a limit switch, 13 is a winding ball made by winding a continuous single plate around a reel shaft 14, and 20 is a plurality of endless nets 21 and 22 which are vertically stretched to face each other. The multi-stage net dryer according to the related art.

When the operator inserts the veneer 1 into the guide roll 2, the stopper mechanism 3 is usually recessed below the conveying surface as shown in FIG. The single plates 1a1 to 1a4 of the guide roll 2, which are sequentially inserted from the right hand, are conveyed to the pinch roll 5 and then the _fourth plate.
It is placed on the upper stage of the direction changing device 7 through the downward conveying and distributing mechanism 6 shown by the solid line in the figure (see FIG. 6). This process will be described in more detail. detecting device 4, first after the inserted prior front end of the veneer 1a1 detected, further followed by 1 instrumentation of being oN the left of the sensing device 4 'by the front end of the veneer 1a ₄ which are inserted redirecting device 7 The veneers 1a _{1 to} 1a ₄ corresponding to the quantity are detected. After this fixed time, the transport distribution mechanism 6 swings upward as indicated by the chain double-dashed line in FIG. Therefore the veneer 1b inserted next
Is reliably placed on the lower stage of the direction changing device 7. Less than,
Similarly, the operator is sequentially inserted into the guide roll 2 in the direction changing device 7 until a plurality of detecting devices 4, 4 ', 12, 12', which will be described later, output a signal indicating that the single plate is fully loaded. The veneers 1c ... are alternately placed on the upper stage or the lower stage.

On the other hand, while the veneer 1b is being placed on the lower stage of the above-mentioned direction changing device 7, the veneers 1a _{1 to} 1a ₄ placed on the upper stage have the roller conveyor 8 descend after a certain time of placement, Then, the belt conveyor 9 is activated to convey the belt in the direction perpendicular thereto. Then, the preceding veneer 1a ₁ that has reached the detection device 11 of the next-stage carry-out conveyor 10 is conveyed by the carry-out conveyor 10 activated by its front end detection, and the rear end passage is temporarily detected by a signal detected by this detection device 11. Stop. Hereinafter, similarly, the following veneers 1a _{2 to} 1a ₄ in response to ON and OFF signals of the detection device 11 are conveyed by the carry-out conveyor 10 that is intermittently driven, so that each veneer 1a _{2 to} 1a ₄ is The gap between the front edge and the rear edge is clogged, and the front edge and the rear edge are brought into close contact or close to each other. (See FIG. 8) In the same manner, the single plates 1b, 1c, ..., which are alternately placed on the lower stage or the upper stage of the direction changing device 7 by the unit amount, are taken out alternately, and then carried out on the next stage. As shown in FIG. 9, on the top of the sheet 10, the veneers are conveyed while being narrowed by the gaps between the veneers, and sequentially sent from the preceding veneer 1a ₁ to the dryer 20.

On the other hand, when a case where the veneer 1 is fully loaded in the direction changing device 7 will be explained by the operation of the stopper mechanism 3 to prevent the subsequent veneer 1 from being carried in, either the upper stage or the lower stage of the direction changing device 7 will be described. When one unit of veneer 1 is placed on
Further, when the front end of the veneer 1 that is subsequently inserted turns on both the left and right detection devices 4 and 4 ′ located on the carry-in side of the pinch roll 5, a predetermined time after a full state is reached, the transport distribution mechanism 6 While swinging to switch the single plate transport surface,
The stopper mechanism 3 can be raised to prevent the subsequent veneer 1 from being carried into the direction changing device 7.

However, even when the direction changing device 7 is fully loaded and the stopper mechanism 3 is in the raised position, the operator inserts the single plate 1 corresponding to one amount of the direction changing device 7 into the low-speed guide roll 2. Thus, the front edge of the stopper mechanism 3 can be temporarily moored while it is in contact with the stopper mechanism 3. The veneer 1 placed on one stage of the fully loaded direction changing device 7
However, when it is taken out in the direction perpendicular to it and emptied, the stopper mechanism 3 is re-immersed below the conveying surface and the mooring veneer 1 is
It can be conveyed to the pinch roll 5 all at once, and can be conveyed to the empty stage.

The direction changing device 7 is not limited to the two stages of the embodiment described above, and setting the number of stages is merely a design problem.

In addition, there are two types of veneer for plywood, one for the front plate or the back plate, and one for the middle plate having a width of about half of this, but the nets 21 and 22 of the dryer 20 have the above-mentioned front and back plates. Since it has the width of the single plate, the single plate for the intermediate plate is fed in two rows in parallel. However, in the above description, for convenience of description, only the feeding on one side has been described. However, in actuality, for example, as shown in FIG. Different devices may be installed in pairs, and the guide rolls for the other side (at the positions adjacent to the guide rolls 2 shown in the drawing may be inserted so that the single plate 1 is inserted in parallel from the same side in FIG. 3). The members may be arranged in parallel with each other starting from (not shown).

Further, as shown in FIG. 10, the veneer 1 having the unspecified length described above is fed into one side of the net 21 of the dryer 20, and the other side is installed on the other side. While the device is placed in a stopped state, a winding ball 13 formed by winding a continuous single plate around a reel shaft 14 rotatably supported above the carry-out conveyor 10 is rewound by an appropriate rewinding means (not shown). By sending in, it is possible to simultaneously dry the sized veneer having an unspecified length and the continuous veneer while being conveyed on the same net 21.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, a single plate having an unspecified length that is sequentially inserted into a guide roll is swung by a transport sorting mechanism that is mounted in a direction opposite to the transport direction, so that the transport surface is quickly switched and a plurality of transport surfaces are switched. After alternately loading into the stage direction changing device, alternately take out to the next stage carry-out conveyor, pack the veneers on the carry-out conveyor to align the width, and then send to the net type dryer, while changing direction When the veneer is fully loaded with the device, the stopper mechanism operates to block the loading, so the edges of the veneers are in close contact or close to each other, and the filling efficiency of the net dryer can be greatly improved. However, since the distance from the stacking position of each veneer to be sequentially inserted to the guide roll at the insertion receiving position is close and the distance is constant, the veneer insertion time can be shortened.
Furthermore, since it is sufficient for the operator to simply push the veneers behind the veneers piled up in the vicinity of the guide rolls while sequentially sliding them forward, the veneers can be inserted very easily and workability is improved. Is useful as it is improved.

[Brief description of drawings]

FIG. 1 is an explanatory view of a multi-stage net type dryer, FIG. 2 is an explanatory view when a single plate having an unspecified length is inserted into the dryer by the conventional method, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a schematic layout drawing showing an example of an apparatus for doing the same.
FIG. 5 is a side view as seen from the arrow, FIG. 5 is a side view of the direction changing device and the carry-out conveyor as seen from the BB arrow in FIG. 3, FIGS. 6 to 9 are operation mode diagrams, and FIG. 10 is another embodiment. It is a top view. 1, 1a _{1 to} 1a ₄ , 1b, 1c ... Veneer veneer having an unspecified length, 2 ... Guide roll, 3 ... Stopper mechanism, 4 ... 4 '... Detection device, 6 ... Conveyance distribution mechanism, 7 ... Direction change Equipment, 10
… Carry-out conveyor, 20… Net type dryer

Claims (1)

[Claims] 1. A plurality of veneer veneers having an unspecified length in a direction orthogonal to the fibers are guided into a direction changing device having a plurality of steps so as to be parallel to the fibers of the veneer through a guide roll, When the veneer veneer for one unit is detected by a plurality of detectors arranged at a position orthogonal to the carry-in direction at intervals of the unit amount for veneer, the transport distribution mechanism is swung. , The single veneer sequentially loaded into the direction changing device is sequentially sent out to a carry-out conveyor having a width-shifting means in the right-angle direction, and the veneer sent after the direction change is carried out on the carry-out conveyor. The veneer veneer is carried into the net-type dryer of the next stage in a close-closed or close-to-close state, while one unit of veneer veneer is carried into the direction changer of the next stage, and veneer veneer is put into the direction changer. When the full load is reached, the stopper Input method feeding of veneer, characterized in that loading by the operation of the structure is prevented.