JP3848633B2 - Method and apparatus for conveying veneer veneer to veneer dryer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention conveys a veneer veneer to a veneer dryer that conveys a veneer veneer cut by a veneer lace to the drying process with the direction of the fiber being reversed in the horizontal plane and the conveyance direction being the same as the initial conveyance direction. It relates to a method and an apparatus.
[0002]
[Prior art]
Usually, the log is cut into a standard length, both ends of the longitudinal direction are supported by a veneer lace, and the veneer veneer is rotated and cut by feeding the long blade and the edge to the outer surface of the log. A veneer veneer is cut continuously in a state where its fiber directions are orthogonal, and is wound up as it is on a take-up reel and temporarily stored as a wound ball on a reeling deck, or cut into a fixed length. Once deposited as a pile of mountains.
[0003]
Thereafter, the veneer veneer is dried in the drying step so that the finished moisture content is 8 to 12%. The veneer dryer used in this drying process is configured by ending a pair of upper and lower chains, a wire mesh, or the like endlessly, or by arranging a set of upper and lower rolls in multiple rows in the transport direction. In general, the former veneer dryer is used to dry a continuous veneer veneer unwound from a roll, and the latter veneer dryer is cut to any predetermined width such as 2, 3, 4 ... The rectangular veneer veneer made is conveyed in a state where its fiber direction is parallel to the conveying direction.
[0004]
That is, the veneer veneer has a certain degree of strength in a direction parallel to the fiber direction, but is fragile by being rounded or broken from the tip in a direction perpendicular to the fiber direction. Therefore, when the fiber direction is conveyed in a state orthogonal to the conveyance direction, the fiber direction hangs down from the tip portion, and it becomes difficult to convey the fiber in a pair of upper and lower rolls installed at intervals at the front and rear in the conveyance direction. For this reason, the veneer veneer cut into a rectangular shape is dried by a veneer dryer in which a pair of upper and lower rolls are installed in multiple rows in the latter conveying direction.
[0005]
However, as described above, the veneer veneer is cut in a direction orthogonal to the fiber direction, and its conveying form is in a state orthogonal to the fiber direction. Usually, in order to obtain a rectangular veneer veneer, it is cut immediately after cutting with a veneer lace or after being wound and cured as described above. In the case of drying the rectangular veneer having been cut in this way by the latter roll conveyance type veneer dryer, it is necessary to change the conveyance direction by 90 degrees.
[0006]
On the other hand, a veneer single plate cut by a veneer lace is roughly divided into a front plate or a back plate forming a front and back layer of a plywood and an intermediate plate forming an intermediate layer thereof. Depending on the nature of the raw wood, the type of wood, etc., in a single raw wood, the portion corresponding to the surface layer portion and the core layer portion is used as the middle plate, and the stable portion as the quality of the intermediate region is used as the front plate or the back. Adopted as a board. The thickness ratio of the front plate, the back plate, and the intermediate plate is approximately 1: 2, and the intermediate plate is thick. Usually, the veneer veneer for the front and back plates is taken up on a take-up reel and stored as a wound ball on the reeling deck, while the middle plate is cut and deposited on a regular scale, or similarly dedicated Is wound on the take-up reel.
[0007]
The veneer veneer once stored is transported and controlled in a state corresponding to the drying control ratio of the veneer dryer which is a drying process. In this case, since the distance required for drying is the same for each veneer plate having different thickness, the drying time is different. Therefore, the conveyance speeds of both are controlled in different states.
[0008]
[Problems to be solved by the invention]
Generally, the production line of a plywood factory is roughly divided into a cutting process, a drying process, a bonding process, and a hot-pressing process from raw wood to veneer veneer, but in order to improve the efficiency of the manufacturing process, each equipment machine is usually It will be installed on a straight line. Therefore, since the roll transport type veneer dryer which is a drying process is also installed in the same direction as the cutting direction of the veneer single plate, the transport direction once converted must be turned 90 degrees again.
[0009]
[Means for Solving the Problems and Effects of the Invention]
  In order to solve the above-mentioned problem, a method for conveying a veneer veneer to a veneer dryer according to the present invention is as follows.
  A transport method for transporting an undried veneer veneer to a veneer dryer provided with a plurality of drying transport stages therein,
  A first conveyor that conveys the cut veneer veneer, and a second conveyor that feeds the veneer veneer conveyed by the first conveyor in a direction transverse to the conveying direction of the first conveyor. And a rotating table that converts the veneer veneer fed from the second conveyor to the same direction as the conveying direction of the first conveyor by rotating the conveying direction by approximately 90 degrees and rotating the rotating table. While transporting the veneer veneer unwound from the table to a veneer dryer,
  A first conveyor and a second conveyor for conveying the veneer veneerYa's transport pathThe veneer dryersoDryVeneer veneerSame as the number of transport stagesStepsNumber providedAndSeveralStepsFirst conveyor and second conveyorTransport pathAre arranged in the vertical direction respectively.And,
  Each rotary table having a set of a plurality of stages in the vertical direction of the rotary table surface arranged on the side of the second conveyor is arranged in a state of being spaced at a certain interval before and after the conveying direction of the first conveyor. And
The veneer veneer that is conveyed with different grades and / or thicknesses is conveyed with the same grade and / or thickness for each rotary table arranged at a certain interval in the front and back. A veneer veneer is fed from a rotary table to the veneer dryer,
in frontThe veneer veneer conveyed by the second conveyor is,The rotary table while changing the transport directionRotating table surfaceTo be transferred toEach turntable surface rotates independently, and the veneer veneer on the turntable surface isVeneer dryerPay out towardIt is characterized by that.
[0010]
A veneer veneer is cut continuously by a veneer lace with its fiber direction orthogonal to each other, wound on a take-up reel as it is, and temporarily stored on a reeling deck as a wound ball, or is fixed immediately after cutting. Cut to length. Then, the veneer veneer is initially conveyed on the belt conveyor adjacent to it at a certain interval with its fiber direction orthogonal to the conveyance direction, and then the veneer veneer fiber fed out by a rotary table described later. The direction is parallel to the transport direction.
[0011]
At least a pair of these rotary tables are installed at an arbitrary interval in the conveying direction of the veneer veneer, and a belt conveyor and a roller conveyor that once convert the veneer veneer conveying form to approximately 90 degrees are respectively installed on the upstream side. ing. Each rotary table is linked to each conveying stage of the veneer dryer, and preferably the total number of rotary tables and the number of conveying stages of the veneer dryer are matched.
[0012]
At the end of each belt conveyor, a roller conveyor that can stand up and lie down with respect to the conveying surface of the belt conveyor is installed in a plurality of row intervals forming these belt conveyors. Then, the veneer veneer conveyed adjacently at a certain interval on each belt conveyor is transferred from each belt conveyor to each roller conveyor by a roller conveyor standing from the conveying surface at the end of each belt conveyor. Heavenly veneer can be replaced as a set for each arbitrary number of sheets. Accordingly, the fiber direction of the veneer single plate transferred onto the roller conveyor is in a parallel state with respect to the driving direction of the roller conveyor, and the conveying direction is changed by approximately 90 degrees.
[0013]
In the conveying direction of these roller conveyors, the above-described rotary tables that can rotate in a horizontal plane by about 90 degrees with the pivot as a fulcrum are installed. These rotary tables are provided with a rotary table surface on which a plurality of rollers are rotatably supported at a certain interval with respect to the conveying direction. The rotary table surface and the conveying surface of the roller conveyor are set to be substantially the same. Then, with the driving of the roller conveyor and the driving of the rollers installed on the rotary table surface, an arbitrary number of adjacent veneer single plates are transferred onto the rotary table surface.
[0014]
After transferring the veneer veneer, the rotary table rotates about 90 degrees with the pivot as a fulcrum, so that the veneer veneer on the rotary table surface is a set for each arbitrary number of sheets, while the fiber direction is parallel to the conveyance direction, The direction is changed to the same direction as that initially transported. Then, the veneer single board conveyed is inserted on each conveyance stage of a veneer dryer by driving the roller which comprises a turntable surface.
[0015]
Preferably, the total number of stages of the rotary table surfaces of at least one pair of rotary tables is set to be equal to the number of conveying stages of the veneer dryer. And if the veneer single board conveyed to each rotary table has the same material type and / or thickness, the start timings of the respective rotary table surfaces are linked and controlled. Moreover, if the material type and / or thickness of the veneer single plate conveyed to each rotary table is different, that is, if the thickness is different as in the above-described front plate, back plate and intermediate plate. The veneer dryer is controlled by the conveyance speed of each conveyance stage.
[0016]
  In addition, in order to solve the above problem, the veneer veneer conveying device to the veneer dryer of the present invention is:
  A transport device for transporting an undried veneer veneer to a veneer dryer having a plurality of drying transport stages therein,
  A first conveyor with an endless belt that conveys an undried veneer veneer;
  A second conveyor constituted by rollers disposed within the belt spacing at the end of the first conveyor;
  A prime mover for raising and lowering the second conveyor relative to the conveying surface of the first conveyor, and transferring the veneer veneer conveyed by the first conveyor to the second conveyor;
  A rotary table placed adjacent to the second conveyor, on which a veneer veneer that is transferred to the second conveyor and transported in the lateral direction of the first conveyor is placed;
  The turntable rotates 90 degrees, conveys the veneer veneer in the same direction as the first conveyor conveys, and
  The first conveyor and the second conveyorAndThe conveying path of the veneer veneer constituting is provided inside the veneer dryer.KetaDryVeneer veneerMultiple installations corresponding to each of the transport stagesIts multi-stageThe first conveyor and the second conveyor are arranged in an up and down direction at an arbitrary interval,
Each rotary table having a set of a plurality of stages in the vertical direction of the rotary table surface arranged on the side of the second conveyor is disposed at regular intervals before and after the conveying direction of the first conveyor,
A distribution mechanism for distributing veneer veneers to be conveyed to each of the first conveyors is installed upstream of the first conveyor installed in multiple stages,
The distribution mechanism that distributes the veneer veneer to be conveyed to each of the first conveyors distributes the materials and / or thicknesses so that the rotary tables arranged at a certain interval in front and back are arranged in a uniform manner. And
Of the rotary tableEach rotating tablesurfaceIs based on the pivot axisThe rotating table surfaceEquipped with a motor to rotate,From the second conveyorThe rotary tablesurfaceReload toI gotVeneer veneerTo change the transport direction of the machine toward the veneer dryer, Each prime moverRotate independentlyStart-upLetEquipped with a controllerThe veneer veneer on the rotary table surface is fed toward the veneer dryer.A veneer veneer conveying device to a veneer dryer characterized by the above.
[0017]
In general, veneer dryers are installed in a plurality of stages in the vertical direction from the viewpoint of drying efficiency. In order to increase the filling efficiency of the veneer dryer, the veneer veneer to be dried is transported simultaneously in a plurality of rows in a direction orthogonal to the transport direction in each transport stage, and in a state where the front-rear direction is closely spaced. ing. For example, when a three-ply veneer veneer is carried into a veneer dryer having three transport stages from the starting end side to each transport stage, the uppermost stage or the lowermost stage has a constant cycle at the uppermost stage. They are inserted into the middle stage and the lowermost stage, closely spaced in the transport direction of the transport stages of each stage, and transported so that the veneer single plates of the upper and lower transport stages are stepped.
[0018]
In this case, the length of the veneer veneer is 3 scales and the transport stages are 3 stages. Therefore, the veneer is divided from the veneer dryer so that the transport stages of the adjacent stages are shifted by 1 scale. The veneer veneer is conveyed at an interval of. Therefore, in order to insert a plurality of veneer single plates into each conveying stage of the veneer dryer, the belt conveyor is installed in a plurality of stages in the vertical direction in the actual work.
[0019]
Then, the veneer single plate is sorted and conveyed, for example, in order from the upper belt conveyor by a sorting conveyor on each belt conveyor arranged in a plurality of stages in the vertical direction. In addition, at the end of each belt conveyor (moving from 0018 next), a roller conveyor that can stand up and lie down with respect to the conveyor surface of the belt conveyor within a plurality of row intervals forming the belt conveyor is the same. The number of stages is set, and the roller conveyors arranged within the distance between the end of the belt conveyor stand up from the transfer surface, so that the veneer veneer is set as a set for every arbitrary number of sheets, and the transfer direction is changed by almost 90 degrees. Will be transferred to the rotary table.
[0020]
In the vicinity of each stage of the roller conveyor, there are installed rotary tables having the same number of rotary table surfaces with the same conveying surface. The rotary table includes a drive control system that drives the rollers that constitute each rotary table surface, and a rotation control system that allows each rotary table surface to rotate in a substantially 90-degree horizontal plane independently of the other rotary table surfaces. Is installed. In other words, an arbitrary rotary table surface can be rotated about a pivot as a fulcrum independently of the other rotary table surfaces when a set of veneer plates of an arbitrary number of sheets is transferred onto the roller from an arbitrary roller conveyor. .
[0021]
As a preferred example, each rotary table surface is rotatably supported around the pivot axis via a bearing. On the opposite side, that is, on the distal end side, rails each having an arcuate range of approximately 90 degrees are laid, and a guide roller protruding from the rotary table surface can be rolled on each rail. And, for example, a rack is formed on each rail, or a chain that replaces the rack is stretched, and a chain sprocket that meshes with this chain is driven by the rotation of a prime mover attached to the rotary table surface. The rotary table can be rotated along the arc-shaped rail. Therefore, when an arbitrary number of sets of veneer single plates are placed on the rotary table surface, the prime mover is operated. The chain sprocket that follows the rotational movement of the prime mover meshes with the chain, so that the rail is rotated as a guide and the rotary table surface is rotated approximately 90 degrees with the pivot as a fulcrum.
[0022]
In addition to the drive modes described above, the following modes are also possible. That is, a motor is installed on the rotary table surface via a bracket, a plurality of gears are installed at an arbitrary interval in the vertical direction of the pivot, and a driving gear meshing with the gear is rotated by the driving shaft of the motor. ing. As the prime mover is driven, the drive gear and the gear mesh with each other to rotate the rotary table surface by approximately 90 degrees using the rail as a guide.
[0023]
Furthermore, each rotary table surface of the rotary table is the same as each transport stage of the veneer dryer, and the rotary table surface after completion of the rotation, that is, a set of veneer single plates for each arbitrary number of sheets is placed on the roller. It is inserted into an arbitrary conveyance stage by driving a roller from the rotary table surface rotated approximately 90 degrees while being placed. The start timing of each turntable surface in this turntable, that is, the rotation start time of the turntable surface with the pivot as a fulcrum is a ratio obtained by dividing the length of the veneer veneer in the conveying direction by the number of steps of each turntable. Will be adjusted.
[0024]
As described above, if the length of the veneer veneer in the conveyance direction is 3 and the conveyance stage of the veneer dryer is three stages, the rotary table surface of the rotary table is used in three stages. When rotation is started from the upper rotary table surface, when the upper rotary table surface rotates 35 degrees, the middle rotary table surface starts to rotate. When the upper rotary table surface is rotated by 70 degrees, the intermediate rotary table surface is rotated by 35 degrees, and at this time, the lower rotary table surface starts to rotate. Further, the upper rotary table surface is rotated by 90 degrees, and a set of veneer single plates is inserted into the upper conveying stage of the veneer dryer for every arbitrary number of the table surfaces. Next, the current state of the upper rotary table is quickly returned to an empty state to prepare for the replacement of a set of veneer veneers for each next arbitrary number of sheets.
[0025]
On the other hand, due to the installation area of the plywood factory, the number of transport stages of the veneer dryer may be increased to 5 or more stages, and a rotary table with a higher number of stages corresponding to the number of transport stages may be used. However, workability may be improved if a plurality of rotary tables, for example, a pair of rotary tables, are used to control the transfer of the veneer for each group in accordance with the thickness of the veneer veneer to be transferred and the use site. A pair of these rotary tables is installed at an arbitrary interval on the conveying line to the veneer dryer, and a belt conveyor and a roller conveyor that temporarily convert the veneer veneer conveying form to approximately 90 degrees on the upstream side of each rotating table. And are installed respectively. In each rotary table, the feeding side of the veneer veneer is linked to each conveying stage of the veneer dryer, and the veneer veneer is conveyed to the veneer dryer.
[0026]
Preferably, the total number of stages of the rotary table surfaces of at least one pair of rotary tables is set to be equal to the number of conveying stages of the veneer dryer. If the veneer veneer conveyed to each rotary table has the same material type and / or thickness, the start timing of each rotary table surface is linked and controlled by a controller such as a tuner by a distance apart from each other. ing. Moreover, if the material type and / or thickness of the veneer single plate conveyed to each rotary table is different, that is, if the thickness is different as in the above-described front plate, back plate and intermediate plate. The veneer dryer is controlled by the conveyance speed of each conveyance stage.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to FIGS.
First, a veneer veneer 1 having any width (2 width, 3 width, 4 width,...) Is prepared. This is supplied to a plurality of feeding positions as a plurality of piles in which veneer veneers 1 previously cut to an arbitrary size width are stacked for one lot. Or the continuous veneer single board 1 cut by the veneer lace as a continuous production | generation process is once cut | disconnected by arbitrary dimension width | variety.
[0028]
The veneer veneer 1 cut to an arbitrary dimension width is conveyed in the fiber direction by a belt conveyor 3 around which a plurality of belts 2 are wound at an arbitrary interval in a direction orthogonal to the conveying direction as shown in FIG. It is transported at an arbitrary interval from the front and rear ones that intersect the direction. The belt conveyor 3 is preferably installed in a slanted manner, and a plurality of sorting mechanisms 4 are installed at a certain interval in the transport direction in accordance with the number of transport stages of the subsequent veneer dryer. The distribution mechanism 4 is composed of a distribution conveyor 5 having the inclined belt conveyor 3 side as a base end and a distal end being a free end, and the lower limit of the movable range is inclined with respect to the base end as a fulcrum. As shown by the wavy lines, the surface is almost horizontal. And the front-end | tip part of the distribution conveyor 5 is bridge | crosslinked by the horizontal belt conveyor 6 installed in the substantially horizontal state. At the end of the horizontal belt conveyor 6, rollers 7 are interposed in a plurality of row intervals forming the belt conveyor 6, and the rollers 7 stand up with respect to the conveying surface of the belt conveyor 6. A roller conveyor 8 that can fall down is configured.
[0029]
As shown in FIG. 2, a motor 11 is connected to the roller conveyor 8, and is driven in the up and down direction to rise and fall and to rotate. In the transport direction of the roller conveyor 8, a rotary table 10 is installed that is rotatable in a horizontal plane by approximately 90 degrees with the pivot 9 as a fulcrum. The rotary table 10 is provided with a plurality of substantially horizontal support frames 12 on a machine frame erected in the vertical direction, with a number of steps corresponding to the conveying steps of the veneer dryer in the subsequent process. . Further, each support frame 12 is provided with a rotary table surface 14 on which a plurality of rollers 13 are rotatably supported at a certain interval with respect to the conveying direction. It is set almost the same as the transport surface. Each support frame 12 is formed in a rectangular shape, and is supported by the pivot 9 via a bearing 15 so as to be rotatable around the pivot 9.
[0030]
On the other hand, rails 16 each having an arcuate range of approximately 90 degrees are laid on the side opposite to the pivot 9 of each support frame 12, that is, on the distal end side, and project from each support frame 12 on each rail 16. The pair of formed guide rollers 17 can be rolled. Each rail 16 is formed with a rack, or a chain 18 instead of the rack is stretched. A chain sprocket 20 that meshes with the chain 18 is interlocked with a drive shaft of a prime mover 19. Each support frame 12 can be rotated along the arc-shaped rail 16 while meshing with the chain 18. Therefore, as shown in FIG. 3, when the prime mover 19 is operated when an arbitrary number of sets of veneer plates 1 are placed on the rotary table surface 14, the chain sprocket 20 that follows the rotational movement of the prime mover 19 is By meshing with the chain 18, the support frame 12 rotates with the rail 16 as a guide, and the rotary table surface 14 can be rotated approximately 90 degrees with the pivot 9 as a fulcrum.
[0031]
In addition to the drive modes described above, the modes shown in FIGS. 4 to 5 may be employed. That is, a prime mover 23 is installed on the support frame 12 of the rotary table surface 14 via a bracket 24, while a plurality of gears 21 are installed at arbitrary intervals in the vertical direction of the pivot 9. The drive gear 22 interlocking with the drive shaft of the prime mover 23 meshes with the gear 21 of the pivot 9, and when the prime mover is driven, the drive gear integrated with the prime mover moves while meshing around the gear 21. The support frame 12 can be rotated by using the rail 16 as a guide, and the rotary table surface 14 can be rotated by approximately 90 degrees using the pivot 9 as a fulcrum.
[0032]
Since the rotary table surface 14 and the conveying surface of the roller conveyor 8 are set to be substantially the same, any number of sheets adjacent to each other as the roller conveyor 8 is driven and the rollers 13 installed on the rotary table surface 14 are driven. The veneer veneer 1 can be transferred onto the rotary table surface 14. 4 to 5, after the veneer veneer 1 is transferred onto the rotary table surface 14, when the driving gear 22 integrated with the driving shaft is rotated by starting the prime mover 23, the veneer 1 is fitted on the pivot 9. When the drive gear 22 rotates around the gear 21 that is worn, the rotary table surface 14 of the rotary table 10 rotates approximately 90 degrees with the pivot 9 as a fulcrum. As a result, the veneer single plate 1 on the rotary table surface 14 is transported in the same direction as the initial transport direction while making the fiber direction parallel to the transport direction as a set for each arbitrary number of sheets. At this time, the conveyance surfaces of the arbitrary conveyance stage of the rotary table 10 and the veneer dryer are substantially aligned with each other. Thereafter, the roller constituting the rotary table surface is driven to feed the veneer dryer onto the conveying stage.
[0033]
Next, a control system in this embodiment will be described with reference to the drawings.
FIG. 6 is a block diagram of this system. This system includes a control unit 31, a first detector 30, a second detector 35, a set distance input device 36, a set number input device 37, a dimension setting device 38, and motors 11, 19 and 25. The control unit 31 includes a CPU 32, a RAM 33, a ROM 34, a storage unit 39, and a clock counter 40. The first detector 30 and the second detector 35 are contact type or non-contact type sensors such as a transmission type and a reflection type. As shown in FIG. 7, the first detector 30 is an inclined belt conveyor. The veneer veneer 1 that is provided and conveyed above in the conveying direction is detected, and the second detector 35 is provided above the belt conveyor 6 and detects the passage of the veneer veneer 1. The set distance input device 36 sets values of distances L1, L2, and L3 between the distribution mechanisms 4 shown in FIG. 1 and values of distances S1, S2, and S3 from the second detector 35 of each stage to the front end of the roller 7. The detected value is input to the storage unit 39. The set number input unit 37 and the size setter 38 form an input device for inputting by an analog switch, a digital switch or the like, and input the number of veneer single plates conveyed to one stage and the size of the veneer single plate conveyed, respectively. . A plurality of kinds of dimensions (for example, 2 scales, 3 scales, 4 scales, etc.) of the veneer veneer 1 are preset, and any of them can be selected or an arbitrary numerical value can be input.
[0034]
As shown in FIG. 2, the motor 11 is connected to the roller 7 via a transmission mechanism (not shown), and drives its vertical movement and rotation. The motor 19 rotates the rotary table 10 around the pivot 9 via a chain sprocket 20 and the like, and also rotates the roller 13 via a transmission mechanism (not shown). As shown in FIG. 1, the motor 25 drives the sorting mechanism 4 to perform the undulation operation. The ROM 34 stores a counter conversion program for calculating the veneer veneer conveyance time in the corresponding section from the distance from the sensor to the conveyor end, the size of the veneer veneer, and the like. The RAM 33 serves as a work area for a counter conversion program, etc., and also forms a pulse counter 41 that holds the calculated number of oscillation pulses and holds the pulses from the clock counter 40. The amount of pulses from the pulse counter 41 By reading, the distances L1, L2, and L3 of the distribution mechanism 4 and the distances of the set distance input device 36 are captured as pulse amounts and stored in the storage unit. The CPU 32 calculates a conveyance time from when a predetermined detection input is received until the corresponding motor is started up by a counter conversion program, and compares it with the number of oscillation pulses from the clock counter 40 to drive the motors 11, 19, 25. Control output is performed.
[0035]
Next, a specific operation of the control system in this embodiment will be described with reference to FIGS.
When the first detector 30 detects the front end portion of the veneer veneer 1 conveyed on the inclined belt conveyor 2, the detection command is transmitted to the controller 31. A plurality of storage elements are built in the controller 31, and the detection command is written in one of the storage elements. If the number of sheets from the set number input unit 37 is three, when the fourth veneer single plate 1 is counted by the first detector 30, a detection command is similarly written to the other storage elements. Each storage element operates the distribution mechanism 4 when a pulse amount corresponding to the distance of the distribution mechanism 4 is counted up. Therefore, the sorting conveyor 5 turns upward with the base end portion as a fulcrum and bridges the horizontal belt conveyor 6 to sort the veneer veneer 1 for an arbitrary number of sheets. On the horizontal belt conveyor 6, a second detector 35 similar to that described above is installed, and when the passage of the veneer veneer 1 is confirmed, the storage element is reset and waits for the next operation. It will be.
[0036]
The controller 31 is connected to a set sheet distance input device 36 for setting the distance from the second detector 35 installed on each horizontal belt conveyor 6 to the roller conveyor 8 positioned at the terminal end. ing. Then, when the second detector 35 detects the front end of the veneer veneer 1 and the pulse amount corresponding to the distance to the roller conveyor 8 is counted up, the horizontal belt conveyor 8 is lying down between the rows. The roller 7 is raised and the three veneer single plates 1 are transferred onto the roller conveyor 8.
[0037]
Also, the lengths of a plurality of types of veneer single plates 1 (for example, 2, 3, 4 ... etc.) are preset, or arbitrary veneer single plate lengths are input by analog switches, digital switches, etc. A converter comprising a counter conversion program that receives the output from the dimension setting device 38 is provided in the controller 31 to convert the length of the veneer veneer 1 being conveyed into a pulse amount. On the other hand, the controller 31 divides the pulse timing corresponding to the length of the veneer veneer 1 by the number of steps of the conveying stage of the veneer dryer, that is, the start timing by the pulse amount interval obtained by dividing the number of stages of the rotary table surface 14. The function is set. Then, the motor 19 installed on each turntable surface 14 is driven for a predetermined time at each start timing obtained in the controller 31, and the turntable surface 14 is rotated by approximately 90 degrees.
[0038]
That is, the fiber direction of the veneer veneer 1 transferred onto the roller conveyor 8 is in a parallel state with respect to the driving direction of the roller conveyor 8, and the transport direction is once converted to approximately 90 degrees. Further, each rotary table surface 14 of the rotary table 10 has the same transfer surface as that of each transfer stage of the veneer dryer, and the rotary table surface 14 after the rotation is completed, that is, a set of veneer single plates 1 for each arbitrary number of sheets. From the rotary table surface 14 rotated approximately 90 degrees while being placed on the roller 11, the roller 11 is driven and inserted into an arbitrary conveyance stage. The start timing of each rotary table surface 14 in this rotary table 10, that is, the rotation start timing of the rotary table surface 14 with the pivot 9 as a fulcrum, is approximately the length of the veneer veneer 1 in the conveying direction. It will be adjusted to the ratio divided by the number of stages.
[0039]
If the length of the veneer veneer 1 in the conveying direction is 3 and the conveying stage of the veneer dryer is three, the rotating table surface 14 of the rotating table 10 is used in three stages. When rotation is started from the upper rotary table surface 14, when the upper rotary table surface 14 rotates 35 degrees, the middle rotary table surface 14 starts to rotate. When the upper rotary table surface 14 is rotated by 70 degrees, the middle rotary table surface 14 is rotated 35 degrees, and at this time, the lower rotary table surface 14 starts to rotate. Further, the upper rotary table surface 14 is rotated 90 degrees, and a set of veneer single plates 1 is inserted into the upper conveying stage of the veneer dryer for each arbitrary number of the table surfaces 14. Next, the current state of the upper turntable surface 14 is quickly returned to an empty state to prepare for the replacement of the veneer veneer 1 as a set of the next arbitrary number of sheets.
[0040]
9 to 11 show a veneer veneer conveying device that changes the optimum conveying direction when the number of conveying stages of the veneer dryer 42 is set to a high number of stages. In this veneer dryer 42, there are rolls. A plurality of transport stages 43 are arranged in six stages in FIG. 10 and five stages in FIG. Further, as shown in FIG. 9, a pair of turntables 10 are installed in the conveying direction of the veneer veneer 1. In FIG. 10, the rotary table surfaces 14 positioned at the front and rear in the transport direction are each set in three stages, and are installed in a state of being divided in the vertical direction corresponding to the number of stages of the veneer dryer 42. Further, in FIG. 11, the rotary table surface 14 positioned forward and backward in the transport direction is divided into an upper three steps and a lower two steps, and is installed in a state of being divided in the vertical direction corresponding to the number of steps of the veneer dryer 42.
[0041]
That is, the rotary table 10 is basically composed of a plurality of stages as described above, and a pair of these rotary tables 10 are installed at an arbitrary interval toward the conveying line to the veneer dryer 42. Further, on the upstream side of each turntable 10, a belt conveyor 6 and a roller conveyor 8 that once convert the veneer veneer 1 conveying mode as described above to about 90 degrees are installed. Each rotary table 10 is linked to each conveyance stage 43 of the veneer dryer 42.
[0042]
In the form of FIG. 10, each rotary table 10 is separated by an arbitrary interval in the conveying direction of the veneer veneer 1, so that the drive start timing of the roller 13 on the rotary table surface 14 between them depends on the ratio of this distance. Is adjusted by the controller 31 described above. That is, the roller 13 of each rotary table surface 14 is linked to the conveying stage 43 of the veneer dryer 42 to complete the feeding of the six-stage veneer single plate 1 in one cycle, but if driven independently, The carry-in time of the veneer veneer 1 will be out of order. Therefore, the driving start timing of the roller 13 on the rotary table surface 14 on the side separated from the veneer dryer 42 in one cycle is compared with the roller 13 on the rotary table surface 14 on the side close to the veneer dryer 42. The speed corresponding to this distance is set faster and the driving is started alternately. Note that this distance is set at the time of installation of the apparatus and does not change, so it may be incorporated in the controller 31 in advance or may be calculated from the pulse counter 41.
[0043]
As described above, if the length of the veneer veneer 1 in the conveyance direction is six, the conveyance stage 43 of the veneer dryer 42 is six in the form of FIG. The deviation between the front and rear intervals is controlled one by one. In order to carry out this control, the veneer veneer 1 is moved from the uppermost stage of the conveying stage 43 of the veneer dryer 42 toward the lower stage by the rotary table 10 having the same number of rotary table surfaces 14 as the number of conveying stages. Although it is possible to carry them by shifting one by one, the driving and returning operations of the rotary table surface 14 of the rotary table 10 become overcrowded and the control becomes tight.
In this embodiment, a pair of turntables 10 having a plurality of turntable surfaces 14 are installed at arbitrary intervals on the conveying line to the veneer dryer 42, and the turntable surfaces 14 of each turntable 10 are driven. By controlling alternately, the above problem can be solved.
[0044]
For example, the veneer veneer 1 is conveyed to the third stage of the veneer dryer 42 by first driving the roller 11 on the lowermost (third stage) rotary table surface 14 on the side close to the veneer dryer 42. Next, the roller 11 on the lowermost (third stage) rotary table surface 14 on the side separated from the veneer dryer 42 and the roller 11 on the middle (second stage) rotary table surface 14 on the side adjacent to the veneer dryer 42 are alternately arranged. Then, the roller 11 at the uppermost stage (corresponding to the third stage, the sixth stage, the second stage, the fifth stage, the first stage, and the fourth stage of the conveying stage 43 of the veneer dryer 42) can be driven. In addition, the starting start stage of the rotary table surface 14 of each rotary table 10 can be any stage. In this case, one cycle can be completed while each rotary table 10 is operated alternately, and the activation / return control of each rotary table 10 can be efficiently implemented.
[0045]
The form shown in FIG. 11 is a preferred embodiment when the material type and / or thickness of the veneer veneer 1 conveyed to each turntable 10 is different. That is, when the thicknesses of the front plate, the back plate, and the middle plate are different from each other, the conveyance speed of each conveyance stage 43 of the veneer dryer 42 is controlled to be divided into two systems, and the thin front plate and the back plate are quickly veneered. Through the dryer 42, the thick intermediate plate is allowed to pass slowly. Therefore, in this embodiment, a pair of turntables 10 having a plurality of turntable surfaces 14 are installed at arbitrary intervals on the conveying line to the veneer dryer 42, and one turntable is the upper three steps of the veneer dryer 42. The front and back plates are made to correspond to the transport speeds for the front plate and the back plate, and the other rotary table is made to correspond to the transport speed for the middle plates of the lower two stages. It becomes possible to implement a transfer device that sets the speed quickly.
[0046]
In the embodiment of FIG. 11, the rotary table surface 14 on the side close to the veneer dryer 42 is installed in three stages, and the rotary table surface 14 on the side separated from the veneer dryer 42 is installed in two stages. 10 are controlled independently. This speed control is performed by reading the pulse amount from the pulse counter 41 corresponding to each conveyance stage 43 of the veneer dryer 42.
[0047]
Therefore, if the length of the veneer veneer 1 in the conveying direction is 6 measures, the cycle of the turntable surface 14 on the side close to the veneer dryer 42 is 6 measures / 3 steps. That is, in the three stages of the conveying stage 43 on the upper side of the veneer dryer 42, the deviation of the front-rear interval is controlled by two scales in one cycle. Further, since the rotary table surface 14 on the side separated from the veneer dryer 42 has two steps, one cycle is 6 scales / 2 steps. That is, in the two stages of the conveying stage 43 below the veneer dryer 42, the deviation of the front-rear interval is controlled by three scales in one cycle.
[0048]
The present invention follows the fundamental technical idea, and can be implemented by changing a part of the above-described embodiments within a range that does not significantly impair the effects of the invention. Included in the range.
[Brief description of the drawings]
FIG. 1 is a side view and a plan view showing a sorting mechanism of the present invention.
FIG. 2 is a plan view showing an embodiment of a rotary table according to the present invention.
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a plan view showing an embodiment of another rotary table of the present invention.
FIG. 5 is a side view of FIG. 4;
FIG. 6 is a block diagram showing a control system of the present invention.
FIG. 7 is an operation explanatory diagram for distributing veneer veneers by a distribution mechanism.
FIG. 8 is a schematic plan view of the present invention.
FIG. 9 is a schematic plan view of the present invention.
FIG. 10 is a schematic explanatory view of the present invention.
FIG. 11 is a schematic explanatory view of the present invention.
[Explanation of symbols]
1 Veneer veneer
3 Inclined belt conveyor
4 Sorting mechanism
6 Horizontal belt conveyor
9 Axis
10 Rotating conveyor
14 Rotating conveyor surface
31 Controller
33 Pulse counter
42 Veneer dryer
43 Conveyance stage

Claims (12)

A transport method for transporting an undried veneer veneer to a veneer dryer provided with a plurality of drying transport stages therein,
A first conveyor that conveys the cut veneer veneer, and a second conveyor that feeds the veneer veneer conveyed by the first conveyor in a direction transverse to the conveying direction of the first conveyor. And a rotating table that converts the veneer veneer fed from the second conveyor to the same direction as the conveying direction of the first conveyor by rotating the conveying direction by approximately 90 degrees and rotating the rotating table. While transporting the veneer veneer unwound from the table to a veneer dryer,
Transportation path of the first conveyor and the second conveyors for conveying the veneer, the same stage number and the transport number of the veneer to be dried veneer dryer equipped et al is, first the plurality of stages conveying path of the conveyor and the second conveyor is respectively arranged in the vertical direction,
Each rotary table having a set of a plurality of stages in the vertical direction of the rotary table surface arranged on the side of the second conveyor is arranged in a state of being spaced at a certain interval before and after the conveying direction of the first conveyor. And
Veneer veneer conveyed by different in grade and / or thickness is conveyed the same grade and / or thickness between each disposed the rotary table in a state in which at a certain distance back and forth, its A veneer veneer is fed from the rotary table to the veneer dryer ,
Before SL veneer veneer carried by the second conveyor, it is reloaded into the rotary table surface of the turntable while converting the conveying direction, each of the rotary table surface by its own rotation, on the rotating table surface The veneer veneer is fed out toward the veneer drier, and the veneer veneer is conveyed to the veneer drier. The veneer veneer is transported substantially perpendicular to the fiber direction to the transporting direction by the first conveyor, the fiber direction of the veneer to be fed by the rotary table, according to claim 1, wherein parallel to the transport direction A veneer veneer transport method to a veneer dryer. At the end of the belt conveyor constituting the first conveyor, a roller conveyor constituting the second conveyor is disposed within the interval between the belt rows of the belt conveyor,
The roller conveyor is configured to be able to stand or fall on the conveying surface of the belt conveyor,
The veneer veneer transported on the belt conveyor is placed on the roller conveyor upright with respect to the conveyor surface of the belt conveyor as a set for each arbitrary number of sheets, and the transport direction is changed by the roller conveyor. 3. A method for conveying a veneer veneer to a veneer dryer according to claim 1 or 2, wherein the veneer veneer is mounted on a rotary table. Before the rotary table surface a plurality of stages arranged in the vertical direction of the Machinery rolling table, independently rotated to after feeding a veneer to said veneer dryer, returning to the next veneer from the second conveyor And receive
The start timing for starting the rotation of each rotary table surface is the rotation of the next stage when the length in the conveyance direction of the veneer veneer is divided by the number of stages of the multi-stage rotary table. The rotation of the table surface is activated ,
After the plurality of veneer veneers of the rotary table surface are conveyed, the rotation operation of the first rotary table surface is subsequently started,
The veneer that is out repeatedly in each drying stage from the turntable surface said veneer dryer, the distance between the drying stage claims 1 you, characterized in that is conveyed aligned to any one of the 3 A method for conveying a veneer veneer to a veneer dryer as described in 1. A transport device for transporting an undried veneer veneer to a veneer dryer having a plurality of drying transport stages therein,
A first conveyor with an endless belt that conveys an undried veneer veneer;
A second conveyor constituted by rollers disposed within the belt spacing at the end of the first conveyor;
A prime mover for raising and lowering the second conveyor relative to the conveying surface of the first conveyor, and transferring the veneer veneer conveyed by the first conveyor to the second conveyor;
A rotary table placed adjacent to the second conveyor, on which a veneer veneer that is transferred to the second conveyor and transported in the lateral direction of the first conveyor is placed;
The turntable rotates 90 degrees, conveys the veneer veneer in the same direction as the first conveyor conveys, and
Conveying path of the veneer to be constituted by the first conveyor and the second conveyor, a plurality of installed corresponding to each of the conveying stage of the veneer to be dried Installing provided inside of the veneer dryer The first conveyor and the second conveyor of the plurality of stages are respectively arranged in the vertical direction at an arbitrary interval,
Each rotary table having a set of a plurality of stages in the vertical direction of the rotary table surface arranged on the side of the second conveyor is disposed at regular intervals before and after the conveying direction of the first conveyor,
A distribution mechanism for distributing veneer veneers to be conveyed to each of the first conveyors is installed upstream of the first conveyor installed in multiple stages,
Wherein the distributing mechanism the transported are veneer distributed to each of the first conveyor, distributing to align the grade and / or thickness for each disposed the rotary table in a state in which at regular intervals around As well as
Wherein each of the rotary table surface of the rotary table is provided with a motor for rotating the rotary table surface as a base point to pivot, the conveying direction of the veneer which E replacement placed on the rotary table surface from said second conveyor veneer dryer to change toward includes a controller for each motor Ru is activated independently rotate, veneer of the veneer on the rotary table surface to veneer dryer, characterized in that for feeding toward the veneer dryer Board conveying device. A plurality of sorting mechanisms installed at the start end of the first conveyor are installed at an arbitrary interval in the conveying direction of the conveyor conveyor installed in an inclined shape, and the veneer veneer is a set of arbitrary number of sheets. conveying apparatus of veneer to veneer dryer according to the first claim 5 that is distributed to the conveyor of each stage. The conveying speed of each of the rotary table surface of the respective rotary table, for each of the rotary table, according to claim 5 or 6 is set in dependence on the conveying speed of the conveying stage of the veneer dryer being associated Veneer veneer conveying device to veneer dryer. A motor for rotating approximately 90 degrees about the pivot axis is linked to each rotary table surface of the rotary table for each rotary table surface , and the rotary table surface rotates independently of the other rotary table surfaces. The conveying apparatus of the veneer single board to the veneer dryer of any one of 5 thru | or 7 . Wherein each rotary table surface has become a bearing at one end said pivot, also the laid down by the upper arcuate rail at its distal end side guide roller is rollable,
Its an arcuate rail is stretched is Chen, by Ji-ene sprocket motor installed in each turntable surface is dynamic drive in mesh with the chain, rotary table surface on the rail of the other 9. The veneer veneer conveying device for a veneer dryer according to claim 8 , wherein the veneer veneer is rotated independently of the rotary table surface. Wherein each rotary table surface is mounted a drive gear that will be driven by the prime mover at one end thereof, and meshed with a gear mounted within the pivot and the drive gear,
By driving the prime mover, the laid down by the upper arcuate rail to the distal end side of the rotary table surface guide roller is rolling, rotary table surface is rotated independently of the other rotary table surface 9. A veneer veneer conveying device for a veneer dryer according to claim 8 . The controller controls a prime mover that raises and lowers the second conveyor and transfers the veneer veneer conveyed by the first conveyor to the second conveyor,
The first conveyor includes a second detector for detecting a veneer veneer to be conveyed. Based on a detection signal of the second detector, the prime mover has an arbitrary number of veneer veneers above the second conveyor. Activate the undulation means when located in
The veneer veneer conveying device for a veneer dryer according to any one of claims 5 to 10 , wherein the second conveyor is configured to transfer a veneer veneer as a set for each arbitrary number of sheets to the rotary table. The controller sets the starting time of each prime mover in order to convey the veneer veneer mounted on the rotary table to a veneer dryer,
The controller includes a first detector that detects a veneer veneer that is conveyed, a second detector that is installed on a first conveyor and detects the passage of the veneer veneer, and a second detector at each stage. The set distance input device for inputting the distance to the second conveyor, the set number input device and the size setting device for inputting the number of veneer veneers and the size, and the output from each detection device were read from the pulse counter. Equipped with a converter to convert to pulse amount,
In order to start the rotation of each turntable surface, the starting timing of the prime mover instructed by the controller is a pulse amount corresponding to the length of the veneer single plate obtained from the converter, the number of steps of the turntable surface When the pulse amount of the ratio divided by elapses, the rotation operation of the next rotary table surface shall be started.
12. The veneer single plate on each of the rotary table surfaces is conveyed separately to the veneer dryer with different rotation start times of the respective rotary tables. Veneer veneer transport device to the veneer dryer.

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