JP4138226B2 - Method and apparatus for feeding tape onto veneer veneer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for supplying a tape between veneer single plates to be wound.
[0002]
[Prior art]
In the process of manufacturing plywood, first, the raw wood is peeled off into a thin continuous strip-like raw plate (hereinafter referred to as veneer veneer) by veneer lace, dried, cut into a predetermined length, laminated, hot pressed, etc. To make a predetermined plywood. Therefore, if the raw wood is peeled off with veneer lace to make a strip-like veneer veneer and not immediately transferred to the drying process, the veneer is generally rolled up into a ball and stocked. The board may be fed to a veneer dryer.
[0003]
By the way, the veneer veneer thinly stripped from the raw wood varies depending on the degree of the raw wood, but there may be cracks etc. on both sides of the veneer veneer, and in some cases the veneer veneer itself is divided There is also a state that was done. Therefore, it is necessary to continue the veneer veneer by some method. For this purpose, for example, the veneer veneer is wound around the take-up reel in the form of a ball while the tape is continuously applied, in order to connect the veneer veneer veneer to both ends of the veneer veneer. Taken is done. In that case, one surface of the tape becomes an adhesive surface and is inserted between the wound veneer single plates, so that the winding proceeds while the tape is attached to, for example, both ends of the veneer single plate. It will be.
[0004]
As a device for feeding out the tape, the tape is drawn out and held rotatably, and the tape is guided to the vicinity of the winding position of the veneer single plate by a predetermined conveying means, for example, a negative pressure adsorption type belt conveyor, and between the veneer single plates. There is something to supply. When such a wound tape is inserted into the tape case so as to be freely rotatable, the side walls of the tape are prevented from falling sideways by the walls, and the front wall is prevented from moving forward, As the tape is pulled out, the wound tape is fed out and rotated. When the tape runs out, the back of the case is opened and the next tape is inserted from the back.
[0005]
[Problems to be solved by the invention]
However, since the walls on both sides to prevent the winding tape from collapsing and the front wall to prevent the winding tape from moving forward are formed integrally, for example, when the diameter of the winding tape increases, the tape case If it is difficult to replace it, there is a disadvantage that the diameter of the tape to be used is limited. Furthermore, since the next tape must be supplied from the back of the tape case when one winding tape is finished, there is a problem that it is difficult to continuously and automatically feed out a number of tapes.
[0006]
In addition, the veneer veneer is wound by replacing the take-up reel each time the thickness of the veneer lace when the log is peeled off. One possible reason for this is that when the veneer veneer is dried by rewinding the veneer veneer from the wound ball in the subsequent process, the veneer veneers with different thicknesses are mixed and supplied to the same drying path. This is to prevent occurrence of poor drying such as overdrying or non-drying.
[0007]
Usually, the area | region of the veneer single board obtained by peeling a raw wood is a location except the chuck | zipper grip part of the outermost waste part and the innermost veneer race, as shown in FIG. This area varies depending on the grade of the raw wood, the tree species, etc., but in a single raw wood, the veneer veneer veneer that is peeled off relatively thinly becomes the front and back of the plywood, and the thicker that becomes the middle plate Broadly divided into veneer veneers for intermediate plates to be peeled. Then, when these areas are separated from the outermost side, in the log 110 shown in FIG. 25 (a), 111 is a waste part, 112 is a fragile part of a sapwood layer, 113 is a veneer veneer part for a middle board of an outer layer, 114 is a veneer single plate portion for an original plate, 115 is a veneer single plate portion for a middle plate of an inner layer, 116 is a weak portion of a core material layer, and 117 is a chuck portion of a veneer race.
[0008]
Therefore, when a single log 110 is peeled off with a veneer lace, if it reaches the veneer veneer veneer portion 113 for the outer layer through the scrap portion 111 and the fragile portion 112 of the sapwood layer, as shown in FIG. The veneer single plate for the intermediate plate is wound around the take-up reel 122 for the intermediate plate at the veneer single plate winding position 121. Then, when the transition to the original plate veneer single plate portion 114 (see FIG. 25A) is made, the winding is temporarily interrupted, and the winding reel 122 for the middle plate is wound on the middle plate in the reeling deck 123. Transfer to the take-up reel standby position 124. Next, a new take-up reel is lowered from the reel stock area 125 of the reeling deck 123 to the veneer single plate take-up position 121 via the supply rail 126, and the new take-up reel is used as a take-up reel 127 for original plate. The veneer veneer for use will be wound up. Further, when the original veneer veneer portion 114 is finished and the inner veneer veneer veneer portion 115 is transferred to the inner layer, the winding is temporarily interrupted and the original take-up reel 127 is moved to the upper original plate. To the take-up reel standby position 128 for use. Then, the intermediate plate take-up reel 122 is returned from the intermediate plate take-up reel standby position 124 to the veneer single plate take-up position 121 to take up the intermediate plate veneer single plate. In this way, the take-up reel 122 for the intermediate plate or the take-up reel 127 for the original plate does not have the take-up reel standby position 124 for the intermediate plate or the take-up reel for the original plate until the diameter of each of the winding balls becomes an arbitrary diameter. The stand-by position 128 is reciprocated.
[0009]
The winding operation is temporarily interrupted every time the thickness is different, such as the veneer veneer plate portions 113 and 115 for the intermediate plate and the veneer veneer plate portion 114 for the original plate, and is inserted into both ends of the veneer veneer during the winding operation. The tape that was pasted must be cut. Thus, the frequency at which the winding of the veneer veneer is interrupted or terminated is higher when the acquisition areas of the inner veneer veneer veneer portions 113 and 115 and the original veneer veneer plate portion 114 are small. For example, when the raw wood diameter is small and each acquisition area is relatively small, the peel thickness change frequency is high, and the frequency of interrupting or terminating the winding of the veneer veneer is high. Moreover, even if the diameter of the log is large, the properties of the log 110, for example, as shown in FIG. If they are mixed, they cannot be used as a veneer veneer for the original plate.In each case, the area including the defective portion is used as a veneer veneer for the intermediate plate. The frequency of interrupting or terminating the winding of the single plate is increased.
[0010]
Usually, the speed at which the log is peeled off by the veneer lace is 200 m / min, and the winding speed for winding the peeled veneer veneer is set to be substantially the same speed. Therefore, to interrupt the winding operation, the winding tape rotating at a speed of 200 m / min following the winding speed must be once decelerated and stopped. The time required for this deceleration stop is 4 to 5 seconds. After the stop, the tape is cut using a cutter or the like. As described above, this tape cutting operation is usually performed several times on a single log, and each time, the tape tape is repeatedly decelerated, stopped, and tape-cutting, which reduces the workability. It was. In addition, as described above, if there are defective parts such as leaf nodes 118, worm-eaten 119, spear muscles 120, etc. due to the properties of the log 110, the winding operation will be interrupted more frequently, further reducing the workability. It was.
[0011]
This invention solves the above problems, and provides a tape feeding method and apparatus for veneer single plate winding balls capable of quickly cutting a tape fed from a winding tape between veneer single plates at an arbitrary timing. There is.
[0012]
[Means for solving the problems and actions / effects]
In order to solve the above problems, the method of feeding a tape to a veneer veneer ball of the present invention is as follows.
The tape of the winding tape is inserted between the veneer single plates wound up by the winding reel to become the winding balls, and the tape fed from the winding tape is tensioned between the winding tape and the winding balls. The tape is cut by stopping the reeling rotation of the winding tape while sliding the cutting part of the tape cutting tool.
[0013]
The veneer veneer peeled off from the log by the veneer lace is wound and wound by a take-up reel at the winding position of the veneer veneer. A winding tape is placed on a conveying means installed from the upstream side toward the winding position of the veneer single plate, for example, a negative pressure adsorption conveyor, and the front position of the winding tape is regulated by, for example, a front stopper member. Prevents the tape tape from moving forward. Then, the tape fed out from the wound tape whose position is regulated is inserted between the veneer single plates that are wound around the take-up reel and become a wound ball. When the veneer veneer is wound into a ball in synchronization with the speed at which the log is peeled off by the veneer race, the tape fed out from the winding tape is in a tension state between the winding tape and the winding ball.
[0014]
Further, a winding core stopper that regulates the front end of the small-diameter winding tape that is gradually reduced from the large diameter and the remaining amount of the tape becomes equal to or less than a predetermined amount is further provided on the front stopper member. It is installed in the downstream position. When the remaining amount of the winding tape that has been fed out while the front end is restricted by the front stopper member is reduced, the small-diameter winding tape moves forward and the front end is restricted by the core stopper. For this reason, when the tape is fed out from the winding tape whose front end is newly restricted to the position of the front stopper member, the tape fed out from the winding core whose remaining amount is reduced is temporarily fed out to the winding ball twice.
[0015]
As for the form of preventing the forward movement of the winding tape, the upstream movement of the veneer veneer is supported by the support rod inserted through the winding core portion so as to be free to move forward. It is also possible to adopt a form that regulates.
[0016]
In addition, an anti-reversal member composed of a flat spatula-like member is installed in the lower part of the front end of the negative pressure adsorption conveyor so as to be able to advance and retract toward the upstream side of the winding ball at the veneer single plate winding position. You can also Then, in order to give a normal angle posture with respect to the width direction of the tape and prevent the front and back of the tape from being reversed (twisted, etc.), the spatula-shaped member is advanced and wound at a certain interval. The tape being fed out from the tape is pressed against the surface of the ball.
[0017]
Even if the tape fed out from the winding tape is inserted in a normal state, a phenomenon that the twisted (reversed) insertion from the normal state often occurs during the insertion. The tape inserted in a normal state is bonded to the back side of the veneer veneer to be wound, that is, the surface side to be wound, but when reversed, the tape is attached to the front side of the veneer veneer to be wound. It will be glued. When the tape is reversed and bonded to the veneer veneer in this way, not only the intended purpose of reinforcing or connecting the both ends of the veneer veneer described above at the reversed position is achieved, but also from the wound ball to the veneer. When the single plate is rewound, there is an inconvenience that it cannot be rewound at the reversed place. In order to solve these problems, it is preferable that the operation of pressing the tape on the surface of the wound ball is performed continuously and periodically from when the tape is inserted between the veneer single plates until the tape is cut.
[0018]
Moreover, the tape cutting tool by which the cutting | disconnection site | part was arrange | positioned in the direction which cross | intersects the feeding | feeding-out direction of a tape in the position protruded from the front end of a negative pressure adsorption conveyor is installed. The upper surface of the cutting portion is preferably formed in a sawtooth shape, and at least the sawtooth portion at the tip thereof is slidably contacted with the tape surface fed out at the time of cutting the tape. When the winding of the veneer veneer is interrupted or terminated as described above, the winding tape is moved from the other side to the one side that intersects the tape feeding direction at a position where forward movement of the winding tape is restricted. The rotation is stopped by pressing.
[0019]
In order to stop the rotation of the winding tape, in addition to the above, both sides of the winding tape are sandwiched from the direction intersecting the feeding direction of the tape, the winding tape is pressed from above, and the winding tape core This is also possible by the frictional force generated when the rod is inserted through the hole formed in the portion.
[0020]
Although the driving of the veneer race is stopped almost in synchronism with the rotation stop of the winding tape, the take-up reel continues to rotate with inertia at the veneer single plate winding position. Therefore, although the feeding of the tape from the winding tape is stopped, the tape is pulled by the take-up reel that rotates with the inertia, and the tension of the tape is increased. The tape with increased tension is cut at its weakest point, that is, at the point where the cutting part of the tape cutting tool bites into the tape surface. Further, since the tape is not fed out from the wound tape when the rotation of the wound tape is stopped, the leading end portion of the cut tape remains at the cut position, and is prepared for the next tape feeding.
[0021]
At least the cutting part of the tape cutting tool that is in sliding contact with the tape surface at the time of cutting the tape is taken out from the time when the tape is inserted between the veneer single plates wound around the take-up reel and serving as a wound ball. It is good also as the state always made to slidably contact with the surface. In this way, if the serrated portion at the cutting site and the tape surface are always in sliding contact with each other, an additional effect is obtained that the serrated portion on the upper surface of the cutting site is sharpened by the frictional state due to the sliding contact of the tape. It is done. Further, prior to stopping the reeling rotation of the winding tape at the time of cutting the tape, that is, immediately before the tape cutting, the tape cutting tool is moved upward on the tape surface that is being fed in tension between the winding tape and the winding ball. It is good also as a form which is displaced and makes a cutting | disconnection site | part slide.
[0022]
When this tape is cut, if the tape with a small diameter and the new tape is being fed out of a small diameter, the winding tape and the ball are In the meantime, the tape tension is further increased, and the cutting portion of the tape cutting tool bites into the tape surface that is double fed out from the state where the cutting portion is in sliding contact with the tape surface.
[0023]
Thus, when the winding of the veneer veneer is interrupted or terminated, the tape cutting tool is installed by stopping the reeling rotation of the winding tape while sliding the cutting part of the tape cutting tool on the tape. It becomes possible to cut with. Therefore, there is no need to temporarily decelerate and stop the wound tape rotating following the winding speed as in the prior art. For example, as shown in FIG. 25, when the raw wood 110 to be peeled off by the veneer lace reaches the veneer veneer single plate portion 114 from the middle layer veneer veneer portion 114 of the outer layer, the driving of the veneer lace is temporarily stopped and the winding tape 26, the intermediate plate take-up reel 10 can be immediately transferred from the veneer single plate take-up position 121 to the intermediate plate take-up reel standby position 124 as shown in FIG. Become. Then, the master take-up reel 127 is transferred from the stand-by position 128 of the master take-up reel to the veneer single plate take-up position 121, and the strip thickness by the veneer lace is changed. A veneer veneer for an original plate can be wound up. In particular, the workability can be improved in the above-described small-diameter log and the log including a defective part, which are frequently interrupted or terminated.
[0024]
In order to solve the above-mentioned problem, the configuration of the tape feeding device to the veneer single-plate wound ball of the present invention is:
A device for feeding out a tape inserted between veneer single plates wound up by a take-up reel to become a wound ball,
Conveying means for guiding the tape from the supply source to the veneer veneer;
A front stopper member that is positioned in front of the winding tape on the path of the conveying means, and that restricts the forward movement of the winding tape while permitting rotation of the winding tape;
A tape cutting tool installed at a position protruding from the tip of the conveying means;
Winding tape rotation stopping means for stopping rotation of the winding tape at an upstream position of the front stopper member;
At least.
[0025]
Then, at the front position of the front stopper member of the tape feeding device, when the remaining amount of the tape wound around the winding core is zero or less than a predetermined amount at the final stage of the feeding of the winding tape, the remaining amount A winding core stopper that restricts the front end of a small-diameter winding tape having zero or a predetermined amount or less is positioned, and a small-diameter winding tape rotation stopping means that stops the rotation of the small-diameter winding tape at an upstream position of the winding stopper. Is also possible.
[0026]
According to the above configuration, the movement of the winding tape in the tape feeding direction is restricted by the front stopper member and / or the core stopper on the conveying means, and the tape drawn from the winding tape whose position is regulated is used as the take-up reel. It becomes possible to insert between the veneer single plates which are wound up and become a wound ball. And when the veneer veneer is turned into a ball in synchronism with the speed at which the log is peeled off by the veneer lace, it is possible to put the tape fed from the winding tape into a tension state between the winding tape and the winding ball. is there. The cutting portion of the cutting tool is in sliding contact with the tape surface that has been fed out, and the winding tape can stop the rotation of the tape at a position where movement of the tape is restricted.
[0027]
In addition, the tape feeding device to the veneer veneer ball is:
A device for feeding out a tape inserted between veneer single plates taken up by a take-up reel,
A negative pressure suction conveyor for guiding the tape from the supply source to the veneer veneer;
The supply source is arranged so as to be movable in a direction substantially perpendicular to the tape supply direction of the negative pressure adsorption conveyor, and the tape wound around the tape is individually stored so that each tape is not tilted to both sides. A plurality of tape storage portions partitioned by a partitioning portion to be prevented, and the tape storage portions are intermittently moved at a formation pitch of the tape storage portions so that the tape storage portions are sequentially positioned on the conveyance path of the negative pressure adsorption conveyor. In a state where a tape storage part is positioned on the conveyance path of the negative pressure suction conveyor, the front of the tape storage part is opened, and the winding tape is fed out while preventing the tape from falling to both sides by the partition part. A tape rack that is rotatably held;
A winding tape that is disposed adjacent to the downstream side of the tape rack on the conveyance path of the negative pressure adsorption conveyor and is located in the tape storage section when the tape storage section with the tape rack is positioned on the conveyance path of the negative pressure adsorption conveyor. Is moved forward in a range that does not disengage from the partition, and then the movement is stopped, and after that, the position of the winding tape is adjusted so that the winding tape is fed out and rotated by the negative pressure adsorption conveyor at that position. A front stopper member to be regulated;
A tape cutting tool installed at a position protruding from the tip of the conveying means;
Winding tape rotation stopping means for stopping rotation of the winding tape at an upstream position of the front stopper;
It is also possible to comprise.
[0028]
Furthermore, the tape feeding device to the veneer veneer ball is:
A device for feeding out a tape inserted between veneer single plates taken up by a take-up reel,
A negative pressure suction conveyor for guiding the tape from the supply source to the veneer veneer;
The supply source is arranged so as to be movable in a direction substantially perpendicular to the tape supply direction of the negative pressure adsorption conveyor, and the tape wound around the tape is individually stored so that each tape is not tilted to both sides. A plurality of tape storage portions partitioned by a partitioning portion to be prevented, and the tape storage portions are intermittently moved at a formation pitch of the tape storage portions so that the tape storage portions are sequentially positioned on the conveyance path of the negative pressure adsorption conveyor. In a state where a tape storage part is positioned on the conveyance path of the negative pressure suction conveyor, the front of the tape storage part is opened, and the winding tape is fed out while preventing the tape from falling to both sides by the partition part. A tape rack that is rotatably held;
A winding tape that is disposed adjacent to the downstream side of the tape rack on the conveyance path of the negative pressure adsorption conveyor and is located in the tape storage section when the tape storage section with the tape rack is positioned on the conveyance path of the negative pressure adsorption conveyor. Is moved forward in a range that does not disengage from the partition, and then the movement is stopped, and after that, the position of the winding tape is adjusted so that the winding tape is fed out and rotated by the negative pressure adsorption conveyor at that position. A front stopper member to be regulated;
When the remaining amount of tape wound around the winding core is zero or less than a predetermined amount at the end of the winding tape at the front position of the front stopper member, the remaining amount is zero or less than the predetermined amount. A core stopper that regulates the front end of the small-diameter winding tape;
A tape cutting tool installed at a position protruding from the tip of the conveying means;
Winding tape rotation stopping means for stopping rotation of the winding tape at an upstream position of the front stopper member and / or the core stopper;
It is also possible to comprise.
[0029]
In this way, the tape rack is used to prevent the winding tape from falling sideways by the partitioning portion, and when the winding tape is unwound, the tape rack is moved by a predetermined pitch to supply the next winding tape. be able to. In this case, the front stopper member can be provided independently of the tape rack, for example, in a fixed position.
[0030]
Further, the front stopper member and / or the core stopper may be in sliding contact with the winding tape to allow the winding tape to move forward while preventing the winding tape from moving forward. Thus, it comes into rolling contact with the wound tape, and it can be said that the resistance of the both is reduced, which is more preferable. Further, such a free-rolling roller stopper can be provided separately, for example, one that contacts the winding tape when the diameter of the winding tape is large and one that contacts the winding tape when the diameter is small.
[0031]
When the winding of the veneer veneer is interrupted or terminated as described above, the winding tape is pressed from the other side at one side crossing the tape feeding direction at a position where forward movement is restricted. The rotation is stopped by. In this case, as means for stopping the rotation of the winding tape, a negative pressure adsorbing conveyor constituting the conveying means on one side in a direction intersecting with the tape feeding direction at an upstream position of the front stopper and / or the core stopper. A receiving member that receives one side of the winding tape from the frame of the frame is installed, and a pressing member is connected to a cylinder installed in the frame so that the pressing member can be pushed with respect to the other side of the winding tape. Yes. When the winding of the veneer single plate is interrupted or terminated, the rotation is stopped by bringing the pressing member into contact with the other side surface of the winding tape and pressing the winding tape against the receiving member.
[0032]
In addition to the above-mentioned means for stopping the rotation of the winding tape, a pair of holding pieces capable of expanding and contracting both side portions above the winding tape at the upstream position of the front stopper and / or the core stopper. It is also possible to adopt a sandwiching form. That is, a pair of sandwiching pieces that are locked by a torsion coil spring at a position above the winding tape and are normally contracted are supported in a suspended state on the support frame, and the cylinder installed on the support frame when the tape is fed out. When the rotation of the winding tape is stopped by the operation, the operation of the cylinder is released when the rotation of the winding tape is stopped, and the pair of holding pieces are contracted.
[0033]
In addition to the above, the means for stopping the rotation of the winding tape is configured to be capable of coming into contact with and separating from the upper surface of the winding tape at the upstream position of the front stopper and / or the core stopper with the upper side of the winding tape as a standby position. It is also possible to use a pressed member. That is, by connecting a pressing member to a cylinder installed on the support frame, and allowing the pressing member to reciprocate between a position where it does not interfere with the rotation of the winding tape and a position where it abuts on the upper surface of the winding tape, Can be stopped.
[0034]
In addition to the above, the means for stopping the rotation of the winding tape is formed on the core portion of the winding tape from the direction intersecting the feeding direction of the tape at the upstream position of the front stopper and / or the core stopper. It is also possible to use a rod body that can be inserted and separated from the hole portion. That is, when a rod is connected to the cylinder installed in the frame on one side in the direction intersecting with the tape feeding direction, and this rod is inserted through the hole formed in the core portion of the winding tape It is also possible to stop the rotation of the winding tape by the generated frictional force.
[0035]
In addition, a cutting tool for cutting the tape is installed at a position protruding from the tip of the transport means, and the cutting part is arranged in a direction intersecting with the feeding direction of the tape, and the direction in contact with the tape The cutting portion is brought into sliding contact with the tape surface fed out by the moving mechanism. In order to improve the sliding contact state, for example, the conveying means is rotated (swinged) about one fulcrum, so that the cutting portion of the tape cutting tool is moved from the sliding contact state to the tape surface. It becomes a state of biting into.
[0036]
Then, the driving of the veneer race is stopped almost in synchronism with the rotation stop of the winding tape, but the rotary motion of the winding reel continues with the inertia at the veneer single plate winding position. Therefore, although the feeding of the tape from the winding tape is stopped, the tape is pulled by the take-up reel that rotates in accordance with the inertia, and the pulled tape is the weakest part, that is, the tape. The part where the cutting part of the cutting tool is in sliding contact with the tape surface is cut.
[0037]
In addition, when the fed tape is twisted, the adhesive surface may be reversed to cause a trouble. In order to prevent this, an anti-inversion member made of a spatula-like member that corrects or prevents twisting of the tape surface can be provided in contact with the tape at the tip of the conveying means for feeding the tape. The anti-reverse member protrudes from the leading end of the conveying means to the veneer single plate, and continuously and periodically advances the spatula-like member from when the tape is inserted between the veneer single plates until the tape is cut. Press the tape that has been fed from the winding tape against the surface of the winding ball. In this way, even if the tape fed out from the wound tape is inserted in a normal state, it is possible to prevent the phenomenon of being reversed and inserted from the normal state that occurs accidentally during the insertion.
[0038]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings.
FIG. 1 shows a state where a veneer single plate V peeled off by a veneer race 1 and sent downstream is wound around a take-up reel 2 to form a veneer single plate winding ball 3. The driving roller 4 comes into contact with the outer periphery of the winding ball 3 (directly below the vertical direction), and the driving force for winding the winding ball 3 is applied by this frictional force. Then, the tape T is adhered between the veneer single plates V being wound up, for example, in terms of reinforcement at both ends.
[0039]
The tape T is fed from a supply source upstream thereof, that is, a winding tape 6 wound around the winding core 5, and is sent to the winding ball 3 side by a negative pressure adsorption conveyor 7 (feeding conveyor) as a conveying means. It is wound around the plate V. With this winding, the tape T is fed out. In other words, the winding tape 6 is driven to rotate at a fixed position as the tape T is drawn into the winding ball 3 at a fixed position. There are first and second roller stoppers 8 and 9 that rotate freely as front stopper members to prevent the winding tape 6 from moving forward and rotate it forward.
[0040]
The roller stopper 8 is in contact with the outer periphery of the winding tape 6 with a large diameter and is rotated by a frictional force. The roller stopper 9 is moved when the winding tape 6 is advanced and becomes small in diameter. Along the outer peripheral surface. The roller stopper 9 is located below the roller stopper 8, and there is a gap (exit portion) through which the roll tape 6 passes when the diameter of the winding tape 6 becomes smaller than a predetermined value. The winding core 5 and the slightly remaining tape T abut against the winding core stopper 11 located on the downstream side of the roller stoppers 8 and 9 described above, and are further fed out until the remaining tape is finished. Is discharged to the side. Details will be described later.
[0041]
The negative pressure adsorbing conveyor 7 includes a negative pressure box (negative pressure chamber) 13 extending in the transport direction of the tape T, and an endless belt 16 having air permeability is hung around the pulleys 14 and 15 and the like so as to surround the periphery. Has been passed. A negative pressure is applied to the negative pressure chamber 13 by a negative pressure pump 17, which acts on the tape T through the vent holes of the belt 16, and adsorbs it on the upper surface of the belt 16. For example, when the motor 18 connected to the pulley 15 is driven, the upper traveling track of the belt 16 moves from the winding tape 6 to the winding ball 3 side of the veneer single plate V, and the tape T is fed out from the winding tape 6. .
[0042]
As shown in FIG. 2, such a tape feeding device 20 is installed in a pair so as to correspond to, for example, both ends of the wound ball 6. The tape T has, for example, an adhesive layer T1 on its upper surface side, and is stuck to both side ends of the veneer single plate V in the adhesive layer T1 on its upper surface in the process in which the veneer single plate V is wound around the ball 3. The material of the tape T is, for example, a predetermined paper.
[0043]
At the upstream end of each negative pressure adsorption conveyor 7, the aforementioned winding tape 6 is disposed as a supply source of the tape T, and a plurality of the winding tapes 6 are accommodated in the tape rack 21. Two tape racks 21 are provided one by one corresponding to each negative pressure suction conveyor 7 located on the left and right of the wound ball 3. Since the left and right structures are the same, one of them will be described. Each tape rack 21 is fed (tact-fed) at a predetermined pitch sequentially inward from an initial position biased outward from the end face of the wound ball 3. The tape rack 21 will be described in detail later.
[0044]
As shown in FIG. 3, the feeding frame 22 that supports the negative pressure suction conveyor 7, the tape rack 21, and the like is rotatable (swingable) by a horizontal fulcrum shaft 24 at an intermediate position with respect to the base frame 23. It is connected. A piston rod 27 of a cylinder 26 as an actuator attached to the base frame 23 so as to be swingable by a shaft 25 is connected to the rear end side of the conveyor 7 of the feeding frame 22. By extending and contracting, the entire feeding frame 22 is rotated up and down by a predetermined angle within a vertical plane. This is to increase the tension of the tape T when the tape T is cut as will be described later.
[0045]
The base frame 23 can move along a horizontal guide rail 29 by a predetermined amount, and is driven in the forward and backward directions by the driving force of the motor 30 and the speed reducer 31 attached to the base frame 23. It can be self-propelled. Thereby, the front-end | tip part of the negative pressure adsorption conveyor 7 can approach / separate with respect to the ball 3.
[0046]
As shown in FIG. 4, the vertical frame 34 rises from the floor surface 33, and the take-up reel 2 positioned at the center of the winding ball 3 is rotatably held by a lifting device 35 that can be moved up and down along the vertical frame 34. As the diameter of the ball 3 increases, the lifting device 35 rises and the take-up reel 2 rises. As described above, in addition to the type in which the reel 2 rises by the diameter as the ball rolls, a type in which the position of the reel 2 is fixed in the vertical direction and the drive roll 4 is lowered by an amount increased by the diameter may be used. Thereby, the position of the front-end | tip part of the conveyor 7 of the tape supply apparatus 20 may be constant irrespective of the increase in the diameter of the winding ball 3. FIG. The wound ball 3 wound up to a predetermined diameter is lifted by supporting the vicinity of both end trochanters of the reel 2 by the hanging hook F (see FIG. 26), and transferred to the reeling deck 123 (see FIG. 26). The veneer veneer V as such a wound ball 3 is fed from the aforementioned veneer race side by the veneer veneer conveyor 36.
[0047]
FIG. 5 is a plan view of a portion of the tape feeding device 20 in which the left and right negative pressure adsorbing conveyors 7 and the tape rack 21 are connected to the above-described feeding frame 22 in a cross member shape (perpendicular to the tape feeding direction). . An enlarged side view of one of such left and right feeding units is shown in FIG. 6, and a plan view is shown in FIG. As shown in FIG. 6, the conveyor frame 39 of the conveyor 7 forms a part of the feeding frame 22, protrudes forward from the cross member-like main body portion (22), and is integrated with the main body portion (cross member). Make up the configuration. As described above, the belt 16 of the conveyor 7 is folded back with the pulleys 14 and 15 at both ends, and there are a guide roller 40 and a tension increasing roller 41 in the middle thereof, which can swing around a shaft 42.
[0048]
The aforementioned motor 18 is connected to the upstream pulley 15, which drives the belt 16 in a circular manner. The first and second roller stoppers 8 and 9 are arranged so that the tape rack 21 is positioned on the belt 16 adjacent to the downstream side of the upstream end of the circulating track of the belt 16. There is. These roller stoppers 8 and 9 are rotatably supported by a stopper frame 43 connected so as to stand up from the conveyor frame 39 so as to be arranged at predetermined intervals in the height direction. The roller stoppers 8 and 9 can be adjusted in position at least in the vertical direction (the length direction of the conveyor if necessary) by adjusting the position of the stopper frame 43 with respect to the conveyor frame 39.
[0049]
A winding tape rotation stopping device 80 is provided on the upstream side of the roller stoppers 8 and 9, that is, between the tape rack 21 and the roller stoppers 8 and 9 in the circulating track of the belt 16. That is, as shown in FIGS. 6, 8, 18, and 19, a receiving member 81 is connected to one end side that intersects the circulating direction of the belt 16 so as to stand up from the conveyor frame 34, and the other A support frame 82 is connected to the end side so as to stand up from the conveyor frame 34. Then, a cylinder 83 as an actuator is installed on the support frame 82, a pressing member 85 is connected to the tip of the piston rod 84, and it is placed on the belt 16, and is moved forward by the roller stoppers 8 and 9. One side surface of the blocked winding tape 6 can be pushed by a pressing member 85.
[0050]
In addition to the above, the winding tape rotation stopping device 80 is, as shown in FIG. 20, a pair of clamping pieces capable of expanding and contracting both side portions above the winding tape 6 at the upstream position of the roller stoppers 8 and 9. It is also possible to adopt a form in which it is sandwiched between 86 and 87. That is, the support frame 82 is raised so as to rise upward from the conveyor frame 34, and a cylinder 88 as an actuator is installed on the support frame 82. On the other hand, the pair of sandwiching pieces 86 and 87 that are locked by the torsion coil spring 90 and are normally contracted are supported in a state of being suspended from the support frame 82. Then, the tip of the piston rod 89 of the cylinder 88 is connected to the support portion 91 of one clamping piece 87. When the tape is fed from the winding tape 6 that is placed on the belt 16 and prevented from moving forward by the roller stoppers 8 and 9, the pair of sandwiching pieces 86 and 87 are opened by the operation of the cylinder 88, When the rotation of the winding tape 6 is stopped, the operation of the cylinder 88 is released and the pair of clamping pieces 86 and 87 are contracted.
[0051]
In addition to the above, the winding tape rotation stopping device 80 can be brought into contact with and separated from the upper surface of the winding tape 6 with the upper side of the winding tape 6 as a standby position at the upstream position of the roller stoppers 8 and 9, as shown in FIG. It is also possible to use the pressing member 92 configured as described above. That is, a cylinder 93 as an actuator is installed on the support frame 82, and a pressing member 92 is connected to the tip of the piston rod 94. Then, the winding tape 6 can be stopped by allowing the pressing member 92 to reciprocate between a position where the pressing member 92 does not interfere with the rotation of the winding tape 6 and a position where the pressing member 92 contacts the upper surface of the winding tape 6.
[0052]
Further, in addition to the above, the winding tape rotation stopping device 80 is arranged at the upstream portion of the roller stoppers 8 and 9 from the direction crossing the feeding direction of the winding tape 6 to the core 5 of the winding tape 6 as shown in FIG. It is also possible to use a rod body 97 configured to be able to be inserted / separated with respect to the formed hole portion. That is, the support frame 82 is connected to one end side intersecting with the circulation direction of the belt 16 so as to protrude from the conveyor frame 34 to the side. A cylinder 95 as an actuator is installed on the support frame 82, and a rod body 97 is connected to the tip of the piston rod 96. When the rod body 97 is inserted through the hole formed in the core 5 of the winding tape 6 that is placed on the belt 16 and prevented from moving forward by the roller stoppers 8 and 9. It is also possible to stop the rotation of the winding tape 6 by the generated frictional force.
[0053]
As illustrated in FIG. 8, the tape rack 21 includes a back plate 45 as a back portion and a plurality of partition plates 46 as a plurality of partition walls integrally connected to the back plate 45. The space is a plurality of tape storage chambers 47. Such a tape rack 21 is opened at the front side and at the bottom side. In this example, the upper part is also released, but the upper part may be closed. As shown in FIG. 6, a rising frame 48 is fixed to the feeding frame 22 at the rear of the tape rack 21, and a pair of guide rails 49 provided in parallel at regular intervals above and below the tape rack 21 A rail engaging portion 50 formed on the back plate 45 is slidably engaged. Accordingly, the tape rack 21 is supported so as to be movable on the upper side of the upstream end portion of the belt 16 in a direction perpendicular to the conveying direction of the negative pressure suction conveyor 7.
[0054]
A rack gear 51 is fixed horizontally between the pair of rail engaging portions 50 of the back plate 45 of the tape rack 21, and a pinion gear 53 of a tact feed motor 52 fixed to the rising frame 48 meshes with the rack gear 51. ing. The tact feed motor 52 functions as an intermittent feed device for the tape rack 21 and intermittently moves the tape rack 21 at the pitch of the tape storage chamber 47 (in other words, the pitch of the partition plate 46). For positioning of the movement, as shown in FIG. 7, a comb-like moving side position detector 55 along the feeding direction is provided on the tape rack 21 side, and a proximity switch 56 is provided on the rising frame 48 side. The proximity switch 56 detects that the tape rack 21 has moved by one pitch as described above, and sends a signal to the motor controller to stop the motor. The back plate 45 may be omitted, and the rear of the tape storage chamber 47 may be opened. In this case, the rack gear 51 described above can be provided at an arbitrary position as long as it has an integral relationship with the partition plate 46 of the tape rack 21.
[0055]
When the tact feed motor 52 is constituted by a pulse motor (step motor), the number of pulses can be counted to move and further position the tape rack 21. The positioning and position detection can also be performed by a signal from a rotary encoder connected to the pulse motor or a signal from a separately provided magnescale or the like. In those cases, the moving side position detector 55 and the proximity switch 56 as shown in FIG. 7 can be omitted. FIG. 7 is a plan view showing a state in which the tape rack 21 is omitted.
[0056]
In FIG. 6, since the lower side of the tape rack 21 is opened, two tapes 6 are supported in order to support the wound tape 6 in the tape storage chamber 47 in a state of being lifted from the surface of the belt 16 of the negative pressure adsorption conveyor 7. Guide bars 57 and 58 are provided along the moving direction of the tape rack 21 (perpendicular to the conveyor 7) at a predetermined interval in the substantially horizontal direction. These guide bars 57 and 58 are provided at a height level located slightly above the belt surface at the upstream end of the conveyor 7 by support members 59 and 60 rising upward from the feeding frame 22, as shown in FIG. As described above, the end point is just before crossing the conveyor 7 starting from the outer side of the conveyor 7.
[0057]
6, when the tape rack 21 moves in a direction perpendicular to the paper surface, the lower end of the wound tape 6 in the tape storage chamber 47 is received by the guide bars 57 and 58, so that the height of the conveyor 7 is increased. From the level, it is supported in a lifted state, and is guided by this while being in contact with the guide bars 57 and 58 and approaches the conveyor 7 from the side.
[0058]
In FIG. 6, for example, a U-shaped or other notch 61 is formed in the front portion of the partition plate 46 of the tape rack 21 from the front end edge to the rear. This is because, for example, when an operator puts the winding tape 6 into the tape storage chamber 47 of the tape rack 21 one by one, it is easy to store the winding tape 6 or it is necessary to take out the winding tape 6 for some reason. , To make it easier. In FIG. 8, the notch 61 is omitted.
[0059]
As shown in FIG. 9, each tape storage chamber 47 of the tape rack 21 is loaded with the wound tape 6 in an upright state, and the wound tape 6 is supported by the guide bars 57 and 58 described above. . The tape rack 21 is positioned on the belt 16 of the negative pressure adsorption conveyor 7 sequentially from one end side (right end in the figure) with the interval between the wound tapes 6 stored in this way as one pitch.
[0060]
Since the guide bars 57 and 58 are interrupted immediately before crossing the belt 16, the wound tape 6 that has moved up to the belt 16 comes off the guide bars 57 and 58 and sits on the belt 16. The belt 16 is inclined slightly downward on the downstream side with respect to the horizontal plane, and the belt 16 is also driven below, so that the winding tape 6 seated on the belt 16 moves slightly to the downstream side. The first and second roller stoppers 8 and 9 as the front stopper members are present, and when the winding tape 6 has a large diameter, the roller stopper 8 first prevents the front movement of the winding tape 6.
[0061]
In this state, the wound tape 6 is not detached from the tape rack 21, and more than half of it is located in the tape storage chamber 47. Therefore, when the winding tape 6 is fed out and rotated in the state of FIG. 10, the partition plates 46 of the tape rack 21 exist on both sides of the winding tape 6, and this side prevents the winding tape 6 from falling sideways. It functions as a direction regulating member. Accordingly, the winding tape 6 can be fed out and rotated within the tape storage chamber 47 without falling sideways.
[0062]
That is, the partition plate 46 of the tape rack 21 functions not only as a part that forms a space for accommodating the winding tape 6 but also as a side regulating member that prevents the winding tape 6 from falling sideways. The plate 46 serves as a dual function, and the structure is simple. Although there is an adhesive layer on the inner side surface of the winding tape 6, there is a portion where the adhesive layer is not formed at the unwinding end, which can be adsorbed by the belt 16 and start unwinding. When the unwinding of one winding tape 6 is completed, the tape rack 21 is fed by one pitch, the next winding tape 6 is similarly positioned on the belt 16 of the conveyor 7, and the same process as described above is repeated. .
[0063]
As shown in FIG. 10, as described above, there is a gap slightly larger than the diameter of the core 5 of the winding tape 6 between the lower roller stopper 9 and the upper surface of the belt 16. When the feeding is finished or just before the end, the remaining tape including the winding core 5 passes under the roller stopper 9 and moves downstream. The above-described core stopper 11 (see FIG. 1), which is located at a certain distance downstream from the roller stopper 9, is provided at a fixed position in a state where it floats from the upper surface of the belt 16 of the conveyor 7. Yes. Accordingly, the tape remaining slightly on the core 5 is completely fed out of the core 5 by contacting the core stopper 11 and then being fed out and rotated. At this time, another new winding tape 6 is already positioned at the rear, so that the tape fed out from the rear new winding tape 6 and the last part of the tape fed out from the remaining core 5 are temporarily stored. Will be sent twice.
[0064]
The stopper surface 63 of the core stopper 11 is inclined three-dimensionally so as to incline obliquely upward toward the downstream and open toward the side. Therefore, the core 5 in contact with the stopper surface 63 receives an action as if it is a cam surface and receives a lateral force while being prevented from moving downstream. As shown in FIG. 11, an opening / closing door 64 is provided at that portion so as to be openable and closable so as to open sideways with an axis line O in the substantially vertical direction as a fulcrum. A piston rod 67 of a cylinder 66 as an opening / closing drive means is connected to the opening / closing door 64 via a bracket 65 via a pin 68, and a base end portion of the cylinder 66 is fed out via a pin 69 and a bracket 70. It is fixed to the side surface of the frame 22.
[0065]
Then, as shown in FIG. 12, the opening / closing door 64 opens laterally due to the contraction of the cylinder 66, and an opening 71 is formed on the side where the stopper surface 63 of the core stopper 11 opens laterally. Since the core 5 receives a lateral lateral force by the stopper surface 63, it can be discharged laterally through this opening 71. In this embodiment, in order to ensure the discharge of the core 5 to the side, the door 64 is provided with a hook bar 72 as a payout member that hooks the core 5 and forcibly discharges it. The hook bar 72 is fixed substantially at a right angle to the door 64 and protrudes to a position spaced apart from the upper surface of the belt 16 of the conveyor 7 by a certain amount. The winding core 5 is positioned below the hooking bar 72, and the hooking bar 72 has a length that extends beyond the end on the opposite side of the winding core 5, and downwards at the tip. It has a bent key part 73 (see FIG. 13). Then, when the door 64 is opened, the key portion 73 of the hook bar 72 engages with one end portion of the core 5, and it is discharged to the side so as to turn sideways as the door 64 rotates. To do.
[0066]
As a result, the winding core 5 can be automatically removed without remaining on the conveyor 7, so that continuous feeding of the tape T can be easily performed. In the present embodiment, the core discharge device 75 is formed including the stopper surface 63, the opening / closing door 64 and the hooking bar 72 as described above, and the cylinder 66 for opening / closing the opening / closing door 64.
[0067]
As shown in FIG. 3, a tape twist prevention mechanism 76 for preventing twisting (reversal, etc.) of the tape T that is drawn in between the veneer single plates is provided at the tip of the conveyor 7 that feeds out the tape T. ing. As shown in FIG. 14, the twist preventing mechanism 76 has a spatula-shaped member 77 protruding so as to intersect at a relatively acute angle with respect to the path of the tape T drawn between the veneer single plates. The base end portion of 77 is fixed to a piston rod 79 of a cylinder 78 as the moving means. The cylinder 78 is fixed to the lower side of the feeding frame 22 through a bracket 78a. Then, as shown in FIG. 15, the spatula-shaped member 77 is in contact with the lower side of the tape T above the veneer single plate V fed from the above-mentioned veneer lace side and regulates the angle in the width direction.
[0068]
FIG. 16 shows an example of such a plane, which has a plate-like contact surface that is somewhat wider than the width direction of the tape T. FIG. 17 shows a state in which the spatula-shaped member 77 acts to push up the lower surface of the tape T so as to correct the twisted tape T so as to eliminate the twist.
[0069]
As shown in FIGS. 6 and 7, a tape cutting device 100 is provided at the tip of the feeding conveyor 7. The tape cutting device 100 includes a bracket 101 protruding from the tip of the conveyor frame 39 of the conveyor 7 for feeding, a holder 102 fixed to the bracket 101, and a tape cutter 103 held by the holder 102. And. In the tape cutting tool 103, a cutting site is arranged in a direction crossing the tape feeding direction. And as shown in FIG. 23, the upper surface of this cutting part is formed in a protruding shape, preferably a sawtooth shape. At least at the time of cutting the tape, the serrated portion at the tip thereof is in sliding contact with the tape surface fed out.
[0070]
Here, as shown in FIG. 24, at least when the tape T is cut, the conveyor 7 is connected to the above-described FIG. 3 so that the tape cutting tool 103 is lifted upward and the cutting portion is in sliding contact with the lower surface of the tape T. With the fulcrum shaft 24 shown in FIG. 4 as a fulcrum, the cylinder 26 is rotated upward by a certain angle by the operation of the cylinder 26. As a result, as shown in FIG. 24, a greater tension than usual is applied to the tape T.
[0071]
The overall operation of the tape feeding device as described above will be described.
When the tape rack 21 on which the winding tape 6 is set as shown in FIG. 8 is moved laterally by the motor 52 and the first tape storage chamber 47 is positioned on the belt 16 of the conveyor 7, as shown in FIGS. Then, the winding tape 6 moves slightly downstream until it comes off the guide bars 57 and 58 and rides on the belt 16 and hits the first roller stopper 8. At that position, the tape T is fed out from the winding tape 6 by the negative pressure adsorption conveyor 7, and the winding tape 6 is fed out and rotated with the rotation of the first roller stopper 8.
[0072]
In particular, at the beginning of winding the veneer veneer on the take-up reel 2, the tape T tends to be twisted and reversed, and the spatula 77 is advanced by the cylinder 78 as shown in FIG. After preventing or correcting and maintaining the state for a certain short time, the spatula-shaped member 77 moves backward and returns to the original position. Further, the twist of the tape T is often observed at the beginning of the winding, but even if the tape T fed out from the winding tape 6 is inserted in a normal state, it is twisted (reversed) from the normal state during the insertion. The phenomenon of insertion often occurs. Therefore, the pressing operation of the tape T against the surface of the winding ball 3 by the spatula-shaped member 77 can be performed continuously and periodically from when the tape T is inserted between the veneer single plates until the tape T is cut. preferable.
[0073]
When the feeding of the tape T proceeds and one winding tape 6 becomes smaller, the winding tape 6 comes into contact with the second roller stopper 9 as shown in FIG. 10, and the feeding proceeds while rotating the stopper 9. . When the winding tape 6 approaches the end in the final stage and the diameter of the winding tape 6 becomes smaller than the gap below the second roller stopper 9, the winding core 5 passes through the second roller stopper 9 together with a little remaining tape and moves downward. 1, and the movement is stopped by the core stopper 11 of FIG. 1. Then, the tape is further rotated for a short time until the tape runs out at that position.
[0074]
Then, as shown in FIGS. 11 to 13, the cylinder 66 contracts to open the opening / closing door 64, and the hook bar 72 forcibly discharges the empty core 5 to the side of the conveyor 7 in the process of opening. After that, the opening / closing door 64 is closed.
[0075]
Before that, the tape rack 21 of FIGS. 8 and 9 is moved laterally by the motor 52 by a distance corresponding to one pitch of the tape storage chamber 47, and the next winding tape 6 is supplied onto the conveyor 7. As described above, the feeding out of the tape T is started as shown in FIG. At this time, when the remaining portion of the previous winding tape 6 is supplied by the core stopper 11 as shown in FIG. 1, the tape T is supplied in a double manner for a short time until the remaining portion is completed.
[0076]
When the winding tape 6 of the veneer veneer V reaches a predetermined size and the winding operation is finished in the course of feeding the winding tape 6, or depending on the properties of the raw wood as described above, When the winding operation is interrupted to make a change, the winding tape rotation stopping device 80 is operated. Prior to stopping the rotation of the winding tape 6, the cutting portion of the tape cutter 103 is brought into sliding contact with the lower surface of the tape T. Specifically, by extending the cylinder 26 with the shaft 24 of FIG. 3 as a fulcrum, the entire tape feeding device 20 is rotated by a small angle counterclockwise in the drawing, and as a result, at the tip of the conveyor 7 as shown in FIG. The positioned tape cutting tool 103 lifts the tape T upward, and brings the sawtooth portion on the upper surface of the cutting portion into contact with the lower surface of the tape T. The serrated portion on the upper surface of the cutting portion and the lower surface of the tape T are the tape T surface that is fed out from the time when the tape T is inserted between the veneer single plates that are wound around the take-up reel 2 and become the winding balls 3. It is good also as the state always made to slidably contact with. In this way, if the serrated portion at the cutting site and the lower surface of the tape T are always in sliding contact, the serrated portion on the upper surface of the cutting site is sharpened by the frictional state due to the sliding contact of the tape T. An effect is also obtained.
[0077]
Then, as shown in FIG. 18 (a), the rotation of the winding tape 6 which is placed on the belt 16 and is feeding the tape T forward is stopped while the forward movement of the roller stoppers 8 and 9 is blocked. Let At this time, as described above, the tape stopper T is fed to the core stopper 11 located downstream of the roller stoppers 8 and 9 while the front end of the small-diameter winding tape 6, that is, the remaining winding tape 6 is regulated. If so, the rotation of the small-diameter winding tape 6 is also stopped synchronously.
[0078]
In order to stop the rotation of the winding tape 6, as shown in FIG. 18B, the cylinder 83 is operated to push the pressing member 85 in a direction intersecting the tape feeding direction, and the pressing member 85 and the winding tape 6 are wound. The winding tape 6 is sandwiched between the receiving member 81 located on the other side of the tape 6 and stopped. Further, in order to stop the rotation of the small-diameter winding tape 6 in synchronism with this, as shown in FIG. 27, the cylinder 83 is operated to push the pressing member 85 in a direction intersecting with the tape feeding direction. The winding tape 6 is sandwiched between the pressing member 85 and the receiving member 81 (opening / closing door 64) located on the other side of the winding tape 6 and stopped.
[0079]
Although the driving of the veneer race is stopped almost in synchronism with the stop of the rotation of the winding tape 6, the take-up reel 2 continues to rotate with inertia at the veneer single plate winding position. Therefore, although the feeding of the tape T from the winding tape 6 is stopped, the tape T is pulled by the take-up reel 2 that rotates in accordance with the inertia, and the tension of the tape T is further increased. . The tape T with increased tension is cut at the most fragile portion, that is, at a portion where the cutting portion of the tape cutting tool 103 bites into the lower surface of the tape T. Further, since the tape T is not fed out from the winding tape 6 when the rotation of the winding tape 6 is stopped, the leading end portion of the cut tape 6 remains at the cut portion, and is prepared for the next feeding of the tape T. Become.
[0080]
At the time of cutting the tape, when the tape T has a small amount of remaining tape T and the new tape 6 is fed out twice, the winding tape 6 is turned off when the winding rotation of the tape 6 is stopped. The tape tension is further increased between the ball and the ball, and the cutting portion of the tape cutting tool 103 is bitten into the tape T surface that is double fed out from the state of sliding contact with the tape T surface. Become. In this case, the tape T fed out from the small-diameter winding tape 6 having a small remaining amount is positioned on the lower side, and the tape T fed out from the new winding tape 6 is positioned on the upper side.
[0081]
Further, in order to further increase the tension of the tape T, in addition to the rotational movement accompanying the above-mentioned inertia, the base frame 23 supporting the entire tape feeding device 20 is driven by the motor 30 as shown in FIG. It is also possible to retract a predetermined amount along the horizontal guide rail 29 and thereby separate the negative pressure adsorption conveyor 7 from the wound ball 3. It is also possible to raise the position of the tape cutting tool 103 in sliding contact with the lower surface of the tape T further upward. This is because the whole of the tape feeding device 20 is rotated by a small angle counterclockwise in the figure from the sliding contact position of the tape cutter 103 with the lower surface of the tape T by the extension of the cylinder 26 with the shaft 24 of FIG. 3 as a fulcrum. By letting
[0082]
Further, in order to stop the rotation of the winding tape 6, as shown in FIG. 20, the pair of sandwiching pieces 86 and 87 that have been expanded by the operation of the cylinder 88 when the tape T is fed are rotated. When the operation is stopped, the operation of the cylinder 88 is released, the pair of sandwiching pieces 86 and 87 are contracted, and the winding tape 6 may be sandwiched from both sides.
[0083]
In addition to the above, in order to stop the rotation of the winding tape 6, as shown in FIG. 21, the pressing member 92 that has been retracted to a position where it does not interfere with the rotation of the winding tape 6 when the tape T is unwound is moved to the cylinder 93. It is possible to hold down the winding tape 6 between the pressing member 92 and the negative pressure adsorbing conveyor 7 by pressing down to a position where the upper surface of the winding tape 6 comes into contact with the above operation.
[0084]
Further, as shown in FIG. 22, in addition to the above, the rod 97 that has been retracted to a position where it does not interfere with the rotation of the winding tape 6 when the tape T is unwound is moved by the cylinder 95 to actuate the core 5 portion of the winding tape 6. It is also possible to stop the rotation of the winding tape 6 by the frictional force generated when it is inserted through the hole portion formed in.
[0085]
In the winding tape rotation stopping device 80 and the tape cutting device 100 described above, the winding form of the winding tape 6 is placed on the belt 16 as described above, and the roller stoppers 8 and 9 prevent its forward movement. It is also possible to adopt not only the state where it has been moved but also a mode in which the forward movement is restricted by a support rod (not shown) inserted through the core 5 of the winding tape 6 and the forward movement is restricted. is there. In cutting the tape, the effect is almost the same as described above.
[0086]
As described above, when the winding of the veneer single plate is interrupted or terminated, the tape T is removed from the tape T by stopping the feeding rotation of the winding tape 6 while the cutting portion of the tape cutting tool 103 is in sliding contact with the tape T. It is possible to cut at the position where 103 is installed. Therefore, there is no need to temporarily decelerate and stop the winding tape 6 rotating following the winding speed as in the prior art. For example, as shown in FIG. 25, when the raw wood 110 peeled off by the veneer lace reaches the veneer veneer single plate portion 114 from the middle layer veneer veneer portion 114 of the outer layer, the driving of the veneer lace is temporarily stopped and the winding tape If the rotation of No. 6 is stopped, the take-up reel 10 for the intermediate plate can be immediately transferred from the take-up veneer winding position 121 to the take-up reel standby position 124 for the intermediate plate as shown in FIG. It becomes. Then, the master take-up reel 127 is transferred from the stand-by position 128 of the master take-up reel to the veneer single plate take-up position 121, and the strip thickness by the veneer lace is changed. A veneer veneer for an original plate can be wound up. In particular, the workability can be improved in the above-described small-diameter log and the log including a defective part, which are frequently interrupted or terminated.
[0087]
In the above description, a laterally moving tape rack is used. However, a tape case that accommodates one tape is fixedly provided on a feeding conveyor, and the front, lower, and rear (or upper) thereof are opened. In addition, a front stopper member may be separately provided in front of the tape case, and a new winding tape 6 may be supplied from the rear or above. Further, the negative pressure adsorption conveyor 7 is used only in the initial stage of winding the tape T around the winding ball 3, and when the tape T is pulled by the subsequent pulling force of the winding ball 3 and is fed out from the winding tape 6, It is also possible to apply neither cyclic driving nor negative pressure to the negative pressure adsorption conveyor 7 (all stop), or cyclic driving but no negative pressure (negative pressure stop).
In addition, the present invention can be carried out in various modifications and improvements based on the knowledge of those skilled in the art.
[Brief description of the drawings]
FIG. 1 is a side view conceptually showing a tape feeding device according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a form of feeding out the tape.
FIG. 3 is a side view showing the tape feeding device of FIG. 1 in more detail.
4 is a side view that also shows the periphery of FIG. 3. FIG.
FIG. 5 is a plan view of FIG. 3;
6 is a side view of the tape feeding device alone without the base frame of FIG. 3. FIG.
7 is a plan view of FIG. 6 (however, the tape rack is omitted).
FIG. 8 is a conceptual perspective view of a tape rack and a tape rotation stop device.
FIG. 9 is a plan view thereof (however, the tape rotation stopping device is omitted).
FIG. 10 is an explanatory view showing supply of a winding tape onto a conveyor and a front roller stopper.
FIG. 11 is a plan view showing an example of a core discharge device.
FIG. 12 is a plan view showing a state where the opening / closing door is opened.
FIG. 13 is an operation explanatory diagram showing a core discharging operation.
FIG. 14 is a side view showing an example of a tape twist prevention mechanism at the front end of the conveyor.
FIG. 15 is an operation explanatory view of the tape twist prevention mechanism.
FIG. 16 is a plan view thereof.
FIG. 17 is an operation explanatory view showing a state where the twist of the tape is corrected.
18A is a conceptual plan view of a tape rack and a tape rotation stopping device, and FIG. 18B is an operation explanatory view showing a state where the rotation of the winding tape is stopped.
FIG. 19 is a conceptual side view of a tape rotation stopping device.
FIG. 20 is a conceptual front view showing another embodiment of the tape rotation stopping device.
FIG. 21 is a conceptual front view showing another embodiment of the tape rotation stopping device.
FIG. 22 is a conceptual front view showing another embodiment of the tape rotation stopping device.
FIG. 23 is a perspective view conceptually showing the tape cutting device.
FIG. 24 is a diagram for explaining the operation of a mechanism for increasing the tension in the tape when cutting the tape.
FIG. 25 is a diagram showing a distribution diagram (a) showing the veneer veneer acquisition area of the original wood and a distribution map (b) showing the form of another veneer veneer area of the original wood.
FIG. 26 is an explanatory view showing a winding state of a veneer single plate.
FIG. 27 is a plan view showing another embodiment of the tape rotation stopping device.
[Explanation of symbols]
2 Take-up reel
3 Roll balls
5 core
6 roll tape
7 Negative pressure adsorption conveyor (conveyance means)
8 First roller stopper (front stopper member)
9 Second roller stopper (front stopper member)
11 Core stopper
16 belt
20 Tape feeding device
21 Tape rack
24 fulcrum shaft
57, 58 Guide bar
76 Tape twist prevention mechanism
77 Spatula members
80 roll tape rotation stop device
81 Receiving member
85 Pressing member
86, 87 Clamping piece
91 Pressing member
97 Rod
100 Tape cutting device
103 Tape cutter

Claims (25)

The tape of the winding tape is inserted between the veneer single plates wound up by the winding reel to become the winding balls, and the tape fed from the winding tape is tensioned between the winding tape and the winding balls. A tape feeding method to a veneer single plate winding ball, characterized in that the tape is cut by stopping the rotation of the winding tape while sliding the cutting part of the tape cutting tool on the tape. 2. The tape feeding method according to claim 1, wherein the winding tape is placed on a transport surface of the tape and its front end is brought into contact with a stopper to restrict forward movement. The stopper is a front stopper member that regulates the front end of a large-diameter winding tape and / or a core stopper that regulates the front end of a small-diameter winding tape that has been fed out of the large-diameter winding tape to reduce its remaining amount. The tape feeding method according to claim 2 . The winding core stopper is positioned in front of the front stopper member. When the remaining amount of the winding tape that has been fed out while the front end is being regulated by the front stopper member is reduced, the winding stopper is moved forward and the winding stopper is moved. 4. A tape feeding method according to claim 3 , wherein the tape is temporarily double-rolled together with the winding tape whose front end is restricted by the lead stopper and whose front end is newly restricted at the front stopper member position. 2. The tape feeding method according to claim 1 , wherein the winding tape is supported so as to be free to rotate by a support rod inserted through the winding core portion and restricts forward movement. 6. The cutting portion of the tape cutting tool is in sliding contact with a tape surface that is fed out from when a tape is inserted between veneer single plates that are wound on a take-up reel to form a wound ball. The tape feeding method according to any one of the above. The cutting portion of the tape cutting tool is displaced so as to be in sliding contact with the tape surface that is being fed in tension between the winding tape and the winding ball prior to stopping the rotation of the winding tape when cutting the tape. The tape feeding method according to any one of claims 1 to 5 . The tape cutting tool is disposed in a direction intersecting with a tape feeding direction, the upper surface of the tape cutting tool is formed in a sawtooth shape, and the serrated portion at the tip thereof is in sliding contact with the tape surface to be fed. Item 8. The tape feeding method according to any one of Items 1 to 7. The rotation of the winding tape is stopped by being pressed against the other side surface from one side surface intersecting the feeding direction at a position where forward movement is restricted. The tape feeding method described in 1. The winding tape at a position moving forward is restricted, according to any one of the direction intersecting the feeding direction of the claims 1 to 8 the rotation is stopped by being clamped to both sides thereof Tape feeding method. The tape feeding method according to any one of claims 1 to 8 , wherein the winding tape is stopped from rotating by being pressed from above at a position where forward movement is restricted. The winding tape at a position moving forward is regulated, either its rotated by frictional force with respect to inserting the rod into the formed hole part core portion of claims 1 to 8 stops The method of paying out a tape according to crab. In the tape fed out from the winding tape, the tape tension is further increased between the winding tape and the ball when the winding rotation of the winding tape is stopped, and the cutting portion of the tape cutting tool is brought into sliding contact with the tape surface. The tape feeding method according to any one of claims 1 to 12, wherein the tape feeds into the tape surface from a state in which the tape is being fed. For tapes that are double-rolled out from a small-diameter winding tape with a small amount of remaining tape and a new winding tape, the tape is placed between the winding tape and the ball when the winding rotation of the winding tape is stopped. The tape feeding method according to claim 4 , wherein the tension is further increased, and the cutting portion of the tape cutting tool bites into the tape surface that is double-drawn from a state where the cutting portion is in sliding contact with the tape surface. Inversion prevention that prevents the front and back of the tape surface from being reversed by providing a normal angle posture with respect to the width direction of the tape from when the tape is inserted between the veneer single plates until the tape is cut. The tape feeding method according to any one of claims 1 to 14, wherein the member is periodically advanced and retracted in the direction of the wound ball at a certain interval to come into contact with the tape surface fed from the wound tape. A device for feeding out a tape inserted between veneer single plates wound up by a take-up reel to become a wound ball,
Conveying means for guiding the tape from the supply source to the veneer veneer;
A front stopper member that is positioned in front of the winding tape on the path of the conveying means, and that restricts the forward movement of the winding tape while permitting rotation of the winding tape;
A tape cutting tool installed at a position protruding from the tip of the conveying means;
Winding tape rotation stopping means for stopping rotation of the winding tape at an upstream position of the front stopper member;
A tape feeding device for veneer veneer wound balls characterized by comprising at least At the front position of the front stopper member, when the remaining amount of tape wound around the winding core is zero or less than a predetermined amount at the end of the winding tape, the remaining amount is zero or less than a predetermined amount. A winding core stopper for restricting a front end of the small-diameter winding tape is located, and at a position upstream of the winding core stopper, a small-diameter winding tape rotation stopping means for stopping the rotation of the small-diameter winding tape is included. The tape feeding device described. The winding tape rotation stop means receives one side surface of the winding tape on one side surface side of the winding tape that intersects the feeding direction of the tape at a position upstream of the front stopper member and / or the core stopper. 18. The tape feeding device according to claim 16, wherein a member is installed, and a pressing member that presses the other side surface of the winding tape against the other side surface of the winding tape is installed so as to be able to be pressed with respect to the receiving member. The winding tape rotation stopping means can be expanded and contracted by sandwiching both side surfaces of the winding tape from a direction intersecting the tape feeding direction at a position upstream of the front stopper member and / or the core stopper. The tape feeding device according to claim 16 or 17, comprising a pair of sandwiching pieces configured. The winding tape rotation stopping means is composed of a pressing member configured to be able to contact and separate from the upper surface of the winding tape with the upper side of the winding tape as a standby position at an upstream position of the front stopper member and / or the core stopper. The tape feeding device according to claim 16 or 17. The winding tape rotation stopping means is at a position upstream of the front stopper member and / or the core stopper, with respect to a hole portion formed in the core portion of the winding tape from a direction crossing the feeding direction of the tape. The tape feeding device according to claim 16 or 17, comprising a rod body configured to be inserted and separated. The front stopper member is on the side farther from the conveying surface of the negative pressure adsorption conveyor, on the side closer to the conveying surface, and on the side closer to the conveying surface, the first idler roller stopper that rotates with the winding tape in contact with the winding tape in the large diameter state The tape feeding device according to any one of claims 16 to 21, wherein the tape feeding device has a composite form including a second idler roller stopper that rotates in contact with the winding tape in a small diameter state. When the remaining amount of the tape wound around the winding core is zero or less than a predetermined amount at the end of the feeding of the winding tape, the front stopper member has a remaining core of zero or a predetermined amount or less. An outlet portion for passing through the downstream side of the negative pressure adsorption conveyor , and a core discharge device for discharging the core to the side of the negative pressure adsorption conveyor is provided downstream of the outlet portion. The tape feeding device according to any one of 16 to 22. The cutting tool is installed at a position protruding from the front end portion of the transport means, the cutting part is arranged in a direction intersecting with the feeding direction of the tape, and is movable in a direction in contact with the tape, The tape feeding device according to claim 16, wherein the cut portion is brought into a slidable contact state with the tape surface fed by the moving mechanism. It is provided movably between an operating position that protrudes from the tip of the transport means to the wound ball side of the veneer veneer and contacts the tape, and a retracted position that is retracted in a direction away from the tape. 17. An anti-reverse member is provided that continuously protrudes to the operating position and returns to the retracted position by operating an actuator until the tape is cut after the tape is supplied to the veneer single plate. Tape feeding device.

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