JP2008030263A - Veneer taking-up method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a taking-up method which can stably take up a veneer cut by a veneer lathe while saving labor, improves the yield of veneer, eliminates futile drying, and improves productivity. <P>SOLUTION: A damper D is lifted to an exclusion position and stand ready. The veneer obtained by cutting material wood 1 with the veneer lathe A is conveyed by a first conveyer B1 and a second conveyer B2. When the boundary on the lower side in the conveyance direction between the defective part and effective part of the veneer is sensed by a veneer sensor C1, it is cut by a cutting edge 5. Next, the seed of the second conveyer B2 is increased to exclude the defective part below the damper D. Next, before the lower side end in the conveyance direction of the effective part of the veneer reaches the damper D, the damper D is moved down to a guide position and made to wait, and the effective part is conveyed from a third conveyer B3 to a take-up apparatus F to take up the veneer. When the boundary on the upper side in the conveyance direction is detected by the veneer sensor C1, it is cut by the cutting edge 5. Next, the take-up speeds of the second conveyer B2, the third conveyer B3, and the take-up apparatus F are increased. After the upper side end part in the conveyance direction of the effective part passes through the spot of the damper D, the damper D is rotated at an exclusion position and made to wait. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for winding a single plate.

Conventionally, a single plate cutting and winding process for winding a single plate cut from a veneer lace into a ball shape is performed as follows.
That is, for example, as disclosed in Patent Document 1, when cutting a strip-shaped veneer having a predetermined thickness from raw wood that has been processed into a perfect circle in advance, the veneer lace is used to transfer the veneer from the veneer lace to the winding device. Conveying and winding. In this case, if necessary, the winding device is provided with a wire rod supply mechanism, the wire rod supplied from the wire rod supply mechanism is positioned on the outer peripheral side of the single plate, and the single plate is wound around the winding shaft together with the wire rod. Yes.
Further, as disclosed in Patent Document 2, a cutting device for cutting a single plate in a direction orthogonal to the conveying direction is provided between the veneer lace and the winding device, and the cut strip-shaped single plate is a predetermined length. There is also a winding method that avoids wrinkling or tearing of a single plate due to an error in conveyance speed or the like by similarly winding while cutting each time.

Further, when winding a single plate together with the wire in such a winding operation, it is necessary to supply and lock the tip of the wire to the winding shaft of the winding device prior to winding the single plate. However, such technologies include the following.
For example, as disclosed in Patent Document 3, an engagement portion that engages with the wire rod is provided at an appropriate position of the winding shaft, and the wire rod supply nozzle of the wire rod supply mechanism is fixed to the space in the conveyor (conveyor conveyor). The tip of the wire stored in the lower part of the conveyer is blown toward the engaging portion of the winding shaft by compressed air, and the tip of the wire is engaged with the engaging portion sequentially. There is a technique of pulling out.
Alternatively, as disclosed in, for example, Patent Document 4, the wire supply nozzle of the wire supply mechanism is provided on the lower side in the single plate conveyance direction of the winding shaft so as to be movable up and down and back and forth. The tip of the wire is supplied from the upper side of the take-up shaft through the wire supply nozzle located at the rear upper side so as to block the passage of the single plate provided on the conveyor, and then the tip of the wire is single-ended. While maintaining the state of blocking the passage of the plate, the wire supply nozzle is lowered and advanced to the lower side of the winding shaft, and further, the leading end side of the wire is wound around the winding shaft by the tip of the single plate to be transported. A technique for drawing out is known.

The technique disclosed in Patent Document 3 has a relatively simple overall structure, and does not necessarily stop the conveyer and the like when supplying the tip of the wire to engage the engaging portion of the winding shaft. While there is an advantage that it is not necessary, etc., every time winding is completed, if the wire is not cut once using a heater etc., a single plate that is not suitable for winding non-banded single plates etc. is passed through a conveyor. Therefore, it has a drawback that it cannot be conveyed and discharged to the rear of the winding device.
On the other hand, the technique disclosed in Patent Document 4 is somewhat uncomfortable for winding, although the overall structure is slightly complicated, but if necessary, the wire supply mechanism is separated above the transport conveyor together with the winding shaft. After the veneer is transported and discharged to the rear of the winding device via the transport conveyor, the wire rod supply mechanism is lowered and returned to the winding position of the transport conveyor together with the winding shaft, so that the winding is performed first. It is characterized by having the advantage that another single plate can be wound around the taken single plate.
Japanese Patent Publication No. 4-17768 Japanese Patent Publication No. 4-17769 Japanese Patent Publication No. 2-26565 Japanese Patent Laid-Open No. 11-193151

By the way, as described above, when cutting a strip-shaped veneer having a predetermined thickness from a log whose outer circumference is a perfect circle, at least one round of the outer circumference of the log is provided on the front end side and the rear end side of the strip-shaped veneer. There is always a defective portion (hereinafter referred to as a defective portion) whose thickness is less than the required thickness over a weak length.
The defective part causes trouble in a later process, and in particular, the tip side becomes an obstacle to smooth winding.
That is, since the thickness of the leading end side is gradually reduced and the leading edge is thin and fragile, it is likely to bend or wrinkle when subjected to air resistance during conveyance or winding.
Therefore, it is difficult to uniformly and smoothly wind the winding shaft, and the posture at the beginning of winding is deteriorated, and subsequent smooth winding cannot be performed.
However, if an error occurs in the gripping position at the center of rotation when re-peeling the raw wood that has been formed by roughly exfoliating the outer circumference into a perfect circle in advance, the thin fragile portion will become unevenly longer. Since it is cut, the above-mentioned harmful effect is likely to occur.
Further, also on the rear end side where the thickness is gradually reduced, the leading edge is bent or wrinkled during rewinding, which is the reverse of winding, making smooth conveyance difficult.
In addition, for example, when a wound veneer is rewound as it is and put into a dryer for drying, drying of the defective part is wasted, or, for example, the defective part is mistakenly made into a product (plywood).・ Products with uneven thickness may be created by mixing into single-plate laminates.

Therefore, in the single plate cutting and winding step, the thickness is less than the required thickness by the operator visually in a state where the conveyance of the single plate is stopped at the front end side or the front end side and the rear end side of the single plate. Determine the boundary part (hereinafter referred to as the boundary) between the defective part and the part where the thickness is the required thickness (hereinafter referred to as the effective part), and manually remove it from the tear conveyor. Yes.
However, in such a method, it is not possible to save labor, and of course, productivity is poor because the conveyance of the single plate is stopped, and further, it is a judgment by visual inspection of the boundary and tearing by manual labor. Since the boundary portion cannot be accurately cut, it is inevitable that the boundary portion is removed including the effective portion, and the single plate yield is reduced.

  The present invention uses the fact that the winding speed needs to be temporarily reduced in order to reliably perform the work at the start and end of the winding work in the winding device, and cuts the boundary. In this case, the single plate is transported at a low speed, and the speed of each selected member is increased or decreased to eliminate the defective portion from the transport path to the winding device.

  As a result, the boundary between the single plates can be accurately cut, the single plate yield is not reduced, and the winding speed at the start and end of the winding operation is reduced. Since the defective portion is excluded from the conveyance path to the winding device, the single plate cutting winding operation can be performed with high productivity.

  Hereinafter, the present invention will be described in more detail with an example of the embodiment shown in the drawings.

  FIG. 1 is a schematic side view of the embodiment, FIG. 2 and FIG. 3 are side operation explanatory views of the winding device, and FIG. 4 to FIG. FIG. 7 and FIG. 8 are enlarged side operation explanatory views when winding a single plate on the winding shaft 8, and FIG. 9 is a side operation explanatory view of the winding device. 10 to 12 are side operation explanatory views of the cutting device C and the damper D when cutting and sorting the defective portion 2b on the upper side in the conveyance direction of the single plate, and FIGS. It is side surface operation explanatory drawing at the time of winding up the next single plate on the single plate wound up in the shape.

A is a known veneer lace in which the rack 1a moves toward the log 1 by a set distance per rotation of the log 1 held rotatably by a spindle (not shown) and cuts the veneer 2. is there.
B1 is a first conveyor that conveys the veneer from the veneer race A to the cutting device C, and is composed of a plurality of belts that run at intervals in a direction orthogonal to the conveying direction, and is driven by the first servo motor 3a. It is provided variably.
C is a known rotary type single veneer cutting apparatus configured as follows.
That is, as the single plate detector C1, in order to detect the boundary between the portion where the thickness of the single plate 2 is thinner than the required thickness and the portion where the required thickness is reached (from the thinner to the thicker, the thicker one In any case from the thin film to the thin film), a plurality of switches such as microswitches for issuing a single plate detection signal to the control device E to be described later are arranged in a direction orthogonal to the single plate conveyance direction.

Further, as the cutting device, an anvil roll 4 that is rotated in a known arrow direction and a roll-shaped blade holder 5 a that holds the cutting blade 5 are provided.
The anvil roll 4 is rotated at the same peripheral speed as the speed of the upper first conveyor B1 through the same drive source 3a as the upper first conveyor B1 under the control of the control device E described later.
In addition, the blade holder 5a is configured to be intermittently rotated in the direction of the arrow in the drawing through a variable speed drive source 6 such as a servo motor under the control of the control device E, which will be described later. At the time of cutting, the peripheral speed of the tip of the cutting blade 5 and the peripheral speed of the anvil roll 4 are controlled to be the same.

  B2 is a second conveyor that conveys the veneer from the cutting device C to the sorting body D, which will be described later. The speed is variable by the servo motor 3b.

D is a damper which is an example of an opening / closing body.
The damper D has a rotation axis D1 on the lower side in the single plate conveyance direction, and is provided with the rotation tip toward the upper side in the same direction. The damper D is a guide position indicated by a solid line in FIG. 1 that guides a single plate from the second conveyor B2 to a third conveyor B3, which will be described later, by an operating member 3c that is operated by the control of the control device E, which will be described later. It can be freely rotated between the exclusion position indicated by a two-dot chain line that disconnects from the second conveyor B2, and can be stopped at each position.
The damper D is constituted by providing a roll on each of the rotation axis D1 side and the rotation front end side and spanning the belt, and the belt is configured to run and stop integrally with a third conveyor B3 described later. Yes.
B3 is a third conveyor for guiding a single plate guided from the second conveyor B2 by the damper D at the guide position to a winding device F described later, and is configured in the same manner as the first conveyor B1. The third conveyor B3 is provided with a variable speed by a third servo motor 3d as a drive source controlled by a control device E, which will be described later.

F is a known winding device disclosed in Patent Document 4 and is configured as follows.
In the winding device F, a plurality of wire rod supply nozzles (hereinafter referred to as nozzles) 9 are provided relative to the positions between the plurality of belts of the third conveyor B3 in the direction perpendicular to the conveying direction. It has been.
In the nozzle 9, a wire 12 wound around a bobbin (not shown) is discharged from the tip of the nozzle 9, and a compressed air feed hole (not shown) is drawn out, and the wire is drawn out when winding a single plate to be described later. It is provided with a known braking member (not shown) capable of providing an adjustable resistance force.
By controlling the control device E, which will be described later, the compressed air is discharged through the on-off valve 11 only at the time of starting the single plate winding, so that the tip of the wire 12 is appropriately extended from the tip together with the compressed air. The resistance to the wire 12 is eliminated without operating the braking member.
In addition, after starting the winding operation of the single plate 2 to the winding shaft 8 which will be described later, the braking member is operated to provide a resistance force so that an appropriate tension can be obtained on the wire rod 12, and further, the diameter of the winding ball is increased. The resistance force by the braking member may be gradually increased in accordance with the shift.
On the other hand, the nozzle 9 is first lowered from the original position indicated by the solid line and then horizontally moved to the left side as shown by the arrow in FIG. In the case of returning to the winding position indicated by the dotted line in which the tip of the nozzle 9 enters the groove 7a of 7 and returning from the winding position to the original position, the path is provided so as to move backward. .

On the other hand, below the third conveyor B3, a support roll 7 is provided at a position in contact with the back surface of the belt of the third conveyor B3.
The support roll 7 can be rotated in the direction of the arrow at the same speed as the third conveyor B3 and variable in speed by the fourth servomotor 3e as a drive source controlled by the control device E, which will be described later, or can be stopped independently. It is configured.
In the support roll 7, a groove 7a is formed at a position opposite to each nozzle 9 and is continuous in the rotational direction so that its tip can enter when each nozzle 9 moves to the winding position.
Further, a winding shaft 8 is provided above the support roll 7 so as to be movable between a standby position indicated by a solid line and a winding position abutted on the belt of the third conveyor B3 as indicated by a dotted line.
The take-up shaft 8 moves in this direction when bearings provided at both ends in the axial center line direction are guided in a vertical direction by a guide member (not shown) and actuated by a lifting device (not shown). As will be described later, the winding shaft 8 is sequentially raised by increasing the diameter of the wound ball of the single plate wound around the winding shaft 8 as will be described later.
Similarly to the winding shaft 8, the support roll 7 is not shown in the figure, but the bearings at both ends in the axial center line direction are guided in the vertical direction by guide members (not shown) so as to move up and down. In a state where it is movable and the upper limit position is set slightly above the position shown in FIG. 1, a constant force is continuously applied upward by an air cylinder or the like.
E is a control device, and is configured to control the operation of each of the operation members as described later by a detection signal from the single plate detector C1.

The embodiment is configured as described above, and its operation will be described with reference to the drawings.
As shown in FIG. 2, the driver sends a signal as an initial setting to make the winding shaft 8 stand by for movement to the winding position on the support roll 7 and to open the on-off valve 11 for a few seconds. Along with the compressed air, the wire 12 is appropriately lengthened from the upper side of the winding shaft 8 positioned at the winding position so as to hang down so as to block the single plate passage on the lower conveyance conveyor B2. .
Next, by actuating the operation mechanism 10, the nozzle 9 is lowered and then moved horizontally, thereby moving and waiting at a winding position below the winding shaft 8 shown in FIG. 3.
It should be noted that the state in which the tip of the wire 12 blocks the passage of the single plate is maintained as it is.
On the other hand, as shown in FIG. 1, the cutting blade 5 is moved to standby at the illustrated standby position, and the damper D is moved to standby at the exclusion position indicated by the two-dot chain line by the operation of the operating member 3c.

With these initial settings, the cutting speed of the veneer race A and the speeds of the first conveyor B1, the anvil roll 4, the second conveyor B2, the third conveyor B3, and the support roll 7 are low and the same speed V1. The first servo motor 3a, the second servo motor 3b, the third servo motor 3d, and the fourth servo motor 3e are actuated to start cutting the log 1. The take-up shaft 8 is rotated by the friction force applied from the support roll 7 via the third conveyor B3 at the same speed.
Therefore, the veneer 2 cut from the log 1 is conveyed to the cutting device C via the conveyor B, and the veneer detector C1 of the cutting device C detects that the front end side boundary of the veneer 2 has passed. Then, a single plate detection signal is issued to the control device E.
Therefore, the control device E sends an operation signal to the drive source 6 and the second servo motor 3b, and rotates the cutting blade 5 at the same speed as the first conveyor B1 and the anvil roll 4 as shown in FIG. The boundary is cut and the speed of the second conveyor B2 is increased to a speed V2.
As a result, as shown in FIG. 5, the veneer 2 is cut, and the defective portion 2a on the lower side in the conveyance direction is conveyed at the speed V2 by the second conveyor B2, while the veneer 2 that has become the effective portion is Since the sheet is conveyed at the speed V1, a gap is formed between the lower end in the same direction of the defective portion 2a and the single plate 2 that has become the effective portion.
Therefore, after the defective part 2a finishes dropping from above the second conveyor B2 to below the damper D, until the lower end in the same direction of the single plate 2 serving as the effective part reaches the position of the damper D. Can take some time.

Moreover, the single plate detector C1 determines the boundary from the speed V1 of the first conveyor B1, the distance from the detection position of the single plate detector C1 to the lower end of the conveying direction of the second conveyor B2, and the value of the speed V2. The time T1 from when the defect is detected until the defective portion 2a finishes dropping below the damper D from the second conveyor B2 and the lower end portion in the same direction of the veneer 2 that has become the effective portion (hereinafter referred to as effective). The time T2 until the tip of the part reaches the position of the damper D can be obtained by the control device E.
Therefore, a signal for operating the operating member 3c is output from the control device E before the time T2 elapses after the time T1 elapses from when the single plate detector C1 detects the boundary, and the damper D is turned to the guide position. It is moved and stopped, and the speed of the second conveyor B2 is set to V1.
As a result, the defective portion 2a falls below the damper D, and the single plate 2 that has become the effective portion is guided by the damper D onto the third conveyor B3 as shown in FIG.
Note that the cutting blade 5 is rotated once by an operation signal from the control device E to finish the cutting operation, and then stops and stands by at the standby position shown in FIG.

Eventually, as shown in FIG. 7, which is a partially enlarged explanatory view, the tip of the single plate 2 is in contact with the wire 12 hanging so as to block the passage of the single plate 2 and between the support roll 7 and the winding shaft 8. Thus, the winding shaft 8 is lifted.
As a result, the wire 12 is pressed against the single plate 2 by the winding shaft 8, and the wire 12 moves together with the single plate 2, and the wire 12 is sequentially pulled out from the tip of the nozzle 9.
On the other hand, since the nozzle 9 is provided with the braking member as described above, a tension is applied to the drawn wire 12.
Therefore, the tip of the single plate 2 is guided along the take-up shaft 8 as shown in FIG. 8 by the portion of the wire 12 extending from the tip of the nozzle 9 to the take-up shaft 8. While being guided in the same manner by the drawn wire 12, it is wound around the winding shaft 8 together with the wire 12 and is formed on the wound ball 13 as shown in FIG. 9.

    In order to improve productivity, after starting the winding operation of the single plate 2 on the winding shaft 8, the cutting speed of the veneer race A, the first conveyor B1, the anvil roll 4, the second conveyor B2, The speeds of the third conveyor B3 and the support roll 7 are further increased from V2.

As described above, the winding operation of the single plate 2 to the winding shaft 8 has progressed, and the cutting end time of the log 1 by the veneer race A is approaching, for example, the stand 1a for the spindle (not shown) of the veneer race. Is detected from the position information, the control device E reduces the cutting speed of the veneer race A to V1, and also includes the first conveyor B1, the anvil roll 4, the second conveyor B2, the third conveyor B3, and the support roll. 7 is sent to the first servo motor 3a, the second servo motor 3b, the third servo motor 3d and the fourth servo motor 3e to decelerate.
In the above state, the single plate detector C1 detects that the boundary between the defective portion and the effective portion that is less than the required thickness existing near the upper end of the single plate 2 in the transport direction has passed, and is controlled. A detection signal is sent to the device E.

Therefore, the control device E sends an operation signal to the drive source 6 and the second servo motor 3b, and rotates the cutting blade 5 at the same speed as the first conveyor B1 and the anvil roll 4 as shown in FIG. After cutting the boundary, a signal is sent to each corresponding drive source to increase the speed of the second conveyor B2, the third conveyor B3 and the support roll 7 to a speed V2.
Therefore, the veneer 2 that has become only the effective portion by cutting with the cutting blade 5 is transported at the speed V2, while the defective portion 2b is transported at the speed V1, so as shown in FIG. A space is formed between the portion 2b.
Further, the single plate detector C1 detects the boundary from the speed V2 of the second conveyor B2, the distance from the detection position of the single plate detector C1 to the position of the upper end of the damper D in the same direction, and the speed V2. The time T3 until the end of the upper end of the single plate 2 in the same direction (hereinafter referred to as the end) 2 'passes through the position of the tip of the damper D, and the lower end of the defective portion 2b in the same direction. The time T4 until the position reaches the tip of the damper D can be obtained in the control device E in the same manner as T1 and T2.

Therefore, before the time T4 elapses after the time T3 elapses from when the single plate detector C1 detects the boundary, a signal for operating the operation member 3c is output from the control device E, and the damper D is turned to the exclusion position. Move to stop.
As a result, as shown in FIG. 12, the defective portion 2b is eliminated below the damper D, and the veneer 2 that has become the effective portion is guided as it is onto the third conveyor B3.
When the driver visually confirms that the end 2 'of the single plate 2 has approached the winding shaft 8 and sends a signal to the control device E, the control device E sends the first servo motor 3a and the second servo. A signal for controlling the motor 3b and the third servo motor 3d is issued, and the first conveyor B1, the second conveyor B2, the third conveyor B3, and the support roll 7 are stopped.
By the stop, the wound ball 13 is in the state shown in FIG.
The reason for this stop is that if the winding ball 13 continues to rotate, the single plate that is the winding ball 13 receives a squeezing force because the support roll 7 is in pressure contact, and may be cracked or torn. It is easy.

From the above state, the log 1 to be cut next is held by the spindle of the veneer lace according to the operation signal from the driver, and then the log 1 is started to rotate so that the cutting speed becomes V1, and the first conveyor B1 and The second conveyor B2 is caused to travel at the speed V1.
In addition, the 3rd conveyor B3 and the support roll 7 are stopped, the rotation of the winding ball 13 is stopped, and the damper D is made to stand by in an exclusion position with the above.
When the log 1 is cut and the veneer 14 is conveyed in the same manner as shown in FIG. 1, and the controller E receives a signal that the veneer detector C1 detects the lower boundary of the veneer 14 in the conveyance direction, An operation signal is output to the first servo motor 3a, the second servo motor 3b, and the drive source 6 so as to perform the same operation as the operation described with reference to FIGS.
Next, in response to an operation signal from the control device E, the operation member 3c is operated, the damper D is rotated as shown in FIG. 6, and the third servo motor 3d and the fourth servo motor 3e are operated. The conveyor B3 and the support roll 7 are run at a speed V1.

As a result, similarly to the single plate 2 shown in FIG. 6, the single plate 14 is guided to the third conveyor B3 by the damper D at the speed V1, and finally, at the peripheral speed V1 by the support roll 7 as shown in FIG. It approaches the rotating ball 13 to be rotated.
Soon, the veneer 14 is guided along the winding ball 13 by the wire 12 delivered from the nozzle 9 as in the case described with reference to FIGS. 7 and 8, and changes from FIG. 15 to FIG. The single plate 14 is wound around the winding shaft 8 together with the wire 12 while being sequentially guided to form a larger-diameter winding ball 13.

Further, when it is detected in the same manner as described above that the end of the log cutting by the veneer race A that has obtained the veneer 14 is approached, the cutting speed of the veneer race A, the first conveyor B1, the anvil roll 4, When the speeds of the second conveyor B2, the third conveyor B3, and the support roll 7 are respectively reduced to V1, and the boundary between the effective portion and the defective portion of the single plate 14 is detected by the single plate detector C1, the single plate 2 As in the case of, each member operates.
As a result, the defective portion cut by the cutting blade 5 is eliminated, and only the effective portion of the single plate 14 is wound on the winding shaft 8 and stopped as in the case shown in FIG.

When the diameter of the winding balls for several logs that have been wound as described above becomes a predetermined amount or more, the winding operation is interrupted and the winding shaft 8 on which the single plate is wound is used as the next step. Move in front of.
That is, before cutting the next log, for example, in the state of FIG. 13, if the diameter becomes a predetermined amount or more, the third conveyor B3 and the support roll 7 are further run from this state, and the wire 12 is wound around the winding ball 13. Then, the driver cuts the wire 12 with the nozzle 9 with a blade or the like.
Next, after the winding shaft 8 that is the winding ball 13 is lifted by the lifting device by the driver's operation signal, the known tilt guide is slid and moved by the action of the bearing of the winding shaft 8 to dry. Guide in front of the device.
Further, the nozzle 9 is kept waiting for movement to the original position shown in FIGS.
On the other hand, a new winding shaft 8 is supplied by the operation of the lifting device, and the wire 12 is supplied before the first cutting of the veneer 2 as described above with reference to FIGS. 9 is moved to standby at the position shown in FIG.
Thereafter, the single plate is wound around the new winding shaft 8 by the operation of each member similar to the case where the single plate 2 is cut.

As described above, according to the above embodiment, when cutting the lower boundary of the veneer in the conveyance direction, the veneer is cut and conveyed at a lower speed than at the winding operation, so that it is more accurate than at a high speed. The boundary position can be cut.
In addition, since the speed of the second conveyor B2 is increased after the cutting, it is possible to reliably remove the defective portion on the lower side in the same direction at the damper D at the removal position from the conveyance path.
Furthermore, at the time of starting the winding operation on the winding shaft 8 by the winding device F, the single plate that has become the winding ball is used for the above reason, except when the single plate is first wound on the winding shaft 8. The rotation is stopped.
Therefore, when the winding ball starts to rotate, it is naturally low at the beginning, and the state of the conveyance speed of the single plate substantially matches the rotation operation state of the winding ball, and the productivity is not lowered. .

In addition, when cutting the upper boundary in the conveyance direction of the single plate, the winding operation approaches the end, and when the winding operation is not performed as described above, the rotation of the winding ball is stopped. On the other hand, it is desirable to transport the veneer at a low speed in order to accurately cut the position of the boundary. Almost match and productivity will not be reduced.
In addition, after the cutting, after the second conveyor B2 and the single plate conveying member located on the lower side of the conveying direction from the second conveyor B2 are accelerated, the end of the effective portion of the single plate passes through the position of the damper D at the guide position. The damper D is set as an exclusion position, and defective parts on the lower side in the same direction can be surely excluded from the conveyance path.

On the other hand, since the defective portion is eliminated from the veneer lace until it reaches the position of the winding device, every time the cutting of one raw wood is finished, the wound ball wound on the winding shaft 8 is removed. No special action is required, such as moving the support roll 7 away from the upper position,
Good workability.

In addition, the winding axis | shaft 8 used as the winding ball 13 induced | guided | derived before the drying apparatus rewinds a single plate as follows.
That is, with the winding shaft 8 rotatably supported, a belt traveling in a direction orthogonal to the winding shaft 8 is placed on the outer periphery of the winding ball 13 with an interval in the axial center line direction of the winding shaft 8. By the multiple pressure contact, the wound ball 13 is rewound by rotating in the direction opposite to that at the time of winding, and the single plate is continuously taken out and sent to the drying device. At the same time, the wire 12 is sequentially wound and collected on a separate rotating body.

Next, a modified example will be described.
1. In the said Example, although the single plate as an effective part wound up on the winding shaft 8 was left continuous, for example, the single plate conveyed by the blade holder 5a holding the cutting blade 5 in the carrying direction. You may wind up, cut | disconnecting for every fixed length.
2. The damper D is configured to have a rotation shaft on the lower side in the conveyance direction and have the rotation tip directed in the direction opposite to the conveyance direction. However, the damper D may be configured as follows.
That is, the rotation axis of the damper D is made the same as the rotation axis on the upper side in the conveyance direction, for example, the lower side in the conveyance direction of the second conveyor B2, and the rotation tip is provided to be freely rotatable toward the lower side in the direction.
When the veneer is guided from the second conveyor B2 to the third conveyor B3, the damper D is in a horizontal state, and when the defective portion of the veneer is excluded, the rotating tip rotates from the horizontal state. What is necessary is just to set it as the state rotated diagonally downward.
3. A single plate cut by the veneer lace A and the defective portion at the upper end portion in the conveying direction does not pose any particular problem in the winding operation, and does not necessarily have to be cut.
4). The winding device F may be a winding device using a well-known belt in addition to a device that supplies and winds the wire 12 from the nozzle 9.

It is a side schematic explanatory drawing of an Example. It is side surface explanatory drawing of a winding apparatus. It is side surface explanatory drawing of a winding apparatus. It is side surface operation explanatory drawing of the cutting device C1 and the damper D at the time of cut | disconnecting and classifying the defective part 2a of the conveyance direction lower side of a single plate. It is side surface operation explanatory drawing of the cutting device C1 and the damper D at the time of cut | disconnecting and classifying the defective part 2a of the conveyance direction lower side of a single plate. It is side surface operation explanatory drawing of the cutting device C1 and the damper D at the time of cut | disconnecting and classifying the defective part 2a of the conveyance direction lower side of a single plate. It is an expansion side operation explanatory view at the time of winding up a single board on winding axis 8. It is an expansion side operation explanatory view at the time of winding up a single board on winding axis 8. It is side surface explanatory drawing of a winding apparatus. It is side view operation | movement explanatory drawing of the cutting device C and the damper D at the time of cut | disconnecting and classifying the defective part 2b of the conveyance direction upper side of a single plate. It is side view operation | movement explanatory drawing of the cutting device C and the damper D at the time of cut | disconnecting and classifying the defective part 2b of the conveyance direction upper side of a single plate. It is side view operation | movement explanatory drawing of the cutting device C and the damper D at the time of cut | disconnecting and classifying the defective part 2b of the conveyance direction upper side of a single plate. FIG. 4 is an explanatory view of a side operation when a next single plate is further wound on a single plate wound around the winding shaft 8 in the form of a ball. FIG. 4 is an explanatory view of a side operation when a next single plate is further wound on a single plate wound around the winding shaft 8 in the form of a ball. FIG. 4 is an explanatory view of a side operation when a next single plate is further wound on a single plate wound around the winding shaft 8 in the form of a ball. FIG. 4 is an explanatory view of a side operation when a next single plate is further wound on a single plate wound around the winding shaft 8 in the form of a ball. FIG. 4 is an explanatory view of a side operation when a next single plate is further wound on a single plate wound around the winding shaft 8 in the form of a ball.

Explanation of symbols

A: Veneer lace B1: First conveyor B2: Second conveyor C: Cutting device C1: Single plate detector D: Damper E: Control device 1: Log 2: Single plate 4: Anvil roll 5: Cutting blade 7: Support roll 8: Winding shaft 9: Nozzle 10: Actuating mechanism 12: Wire rod 13: Rolling ball

Claims (2)

Cutting a strip-shaped veneer having a predetermined thickness from a log whose outer periphery is a perfect circle, and a veneer race with variable cutting speed;
A first conveyor with variable cutting speed for conveying a veneer from a veneer race;
A cutting device having a single plate detector for cutting the single plate conveyed by the first conveyor;
A second conveyor for conveying a veneer from a cutting device and having a variable cutting speed;
A sorter that is movable between a guide position for guiding the veneer conveyed by the second conveyor to the lower side in the conveying direction and an exclusion position that disconnects the lower side, and that can be stopped at each position;
A third conveyor with variable cutting speed for conveying a single plate from the sorting body;
Winding a single plate conveyed by the third conveyor into a ball shape, and arranging a single plate winding device of variable winding speed in order in the single plate conveyance direction,
At the start of cutting by the veneer race, the selection body is moved to standby at the exclusion position, and the cutting speed of the veneer race and at least the speeds of the first conveyor and the second conveyor are the same speed as the first speed,
When the first boundary on the lower side of the conveyance direction between the defective portion and the effective portion of the single plate is detected by the single plate detector, the single plate is cut at the first boundary by the cutting device, and then the second conveyor is accelerated. A single plate defective portion on the lower side from the first boundary is dropped and removed at the position of the sorting body,
Next, the sorting body is moved to standby at the guide position, the second conveyor is decelerated and traveled at the first speed, and the effective unit veneer on the upper side from the first boundary passes through the second conveyor and the third conveyor. It is transported to the winding device and starts winding,
After that, the cutting speed of the veneer race, the speed of each conveyor and the winding speed of the winding device are appropriately increased in the same speed state to cut and wind the effective part single plate,
When the cutting of the raw wood approaches at the end, the cutting speed of the veneer race, the speed of each conveyor and the winding speed of the winding device are decelerated while keeping the same speed,
When the second boundary on the upper side in the conveyance direction between the defective portion and the effective portion of the single plate is detected by the single plate detector, the single plate is cut at the second boundary by the cutting device, and then the second conveyor, the third conveyor, While increasing the winding speed of the winding device to the same speed,
Next, after the second boundary of the effective unit veneer passes through the position of the sorting body, the sorting body is moved to the exclusion position and waits for the defective portion of the veneer on the upper side of the second boundary. Drop out at the position,
Next, the winding method of the single plate which stops at least the winding operation of the winding device before the second boundary is wound up by the winding device at the latest at the latest.   The winding method of the single plate of Claim 1 which winds with a wire, when winding a single plate with a winding device.

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