JPH06183550A - Supply device for material wood - Google Patents

Abstract

PURPOSE:To surely and efficiently supply a material wood, conveyed in a direction orthogonal to the axial center from a preceding step process on a conveyer, to a material wood temporarily centering unit, material wood centering unit, etc., in accordance with processing ability thereof. CONSTITUTION:The first receiving frame 4 with the rear end vertical further with the upper surface in a descending gradient relating to a conveying direction and the second receiving frame 5 reversely with the upper surface in an ascending gradient are set up liftably in a reverse direction to each other by aligning teeth in a position in the vicinity of the frame, between a loghole conveyer 2 and a delivery coveyer 13, to protrude the first receiving frame 4 from under a conveying surface, and also transfer loading a material wood 1 onto the conveyer 13 by sinking the second receiving frame 5 under the conveying surface. The material wood 1 is transfer fed on the delivery conveyer 13 to arrive at a starting end position of a hook conveyer 32, lifted by a pair of hooks 31, tilt conveyed while restricting a guide roller to a track copying a frame unit shape and carried into a material wood temporarily centering position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention transfers a raw wood conveyed on a conveyor in a direction orthogonal to its axis from a previous step to a next step of a raw wood temporary centering device, a raw wood centering device, veneer lace and the like. The present invention relates to a device that supplies reliably and efficiently according to its processing capacity.

[0002]

2. Description of the Related Art Conventionally, as a supply device of this type, a pair of right and left kicking-out pieces configured to be retractable with respect to a conveyor surface at an intermediate position of a conveyor are installed, and a command from a next stage process is used. This kicking piece was projected from the conveying surface, and the raw wood conveyed from the preceding stage process was kept waiting on the conveyor, and was supplied individually.

Further, the longitudinal direction of the raw wood conveyed on the conveyor is not necessarily evenly placed on the left and right sides of the conveyor in the conveying direction, and is in a state of being displaced to either side. If it becomes excessive, there is a risk that it will collide with the temporary centering device or the chuck spindle part of the centering device when it is conveyed to the next stage process. In order to straighten it in front, both sides of the raw wood were laterally moved from both sides with the conveyor temporarily stopped.

Further, if the horizontal space between the temporary centering device or the centering device and the spindle of the veneer race, which is the next step, is guaranteed, the conveyor can be brought into the horizontal conveying state as it is, but temporarily the veneer lace is attached. If the device intervenes in this horizontal space, avoid the interference with the auxiliary device and arrange the conveyor in an inclined manner using the upper space,
Logs had to be supplied.

[0005]

However, during the transportation by the conveyor, the kicking pieces can be freely retracted from the transportation surface, and the raw wood transported from the preceding step, or a plurality of raw woods waiting to be stored on the conveyor are stored. , Forward 1
It was impossible to reliably deliver to the book. That is, when the raw wood is eccentrically conveyed from the preceding stage process, it does not intervene at the same time with respect to the longitudinal rear portion of the raw wood due to the mechanism in which the kicking pieces project at the same time on the left and right sides. Results in lifting the other side even when kicked out, and when the latter is pushed out between the stock logs in the storage state on the latter conveyor to project to the piece and the log for one tree is fed out, 1
There is a case where not only the trees but also two trees are fed out at the same time, and this tendency is likely to occur especially when the raw wood diameters are mixed and stored.

Further, when the longitudinal direction of the raw tree conveyed on the conveyor is placed so as to be offset to the left or right of the convey direction of the conveyor, if the both ends of the raw tree are moved laterally from both sides, With the weight of raw wood hanging on the conveyor,
The lower part of the log and the upper surface of the conveyor were in sliding contact with each other in the longitudinal direction, which caused damage to the log and the conveyor.

Further, when an auxiliary device is present in the temporary centering device, which is the next step, or in the horizontal space between the centering device and the spindle of the veneer race, the upper space is avoided by avoiding interference with the auxiliary device. The conveyor is arranged in an obliquely inclined shape by using, and the raw wood is supported by the pair of claw-shaped parts attached to the conveyor and can be lifted up to the upper part.
When horizontally transporting from this upper position to the temporary centering device or the centering device, when the raw wood is transferred to the horizontal conveyor, the inclined conveyor and the horizontal conveyor have a common axis at the end and the start. Due to the configuration, there is a risk that the claw-shaped portions interfere with each other, which damages the claw-shaped portions or hinders the supply of raw wood.

[0009]

SUMMARY OF THE INVENTION In view of the above, the present invention is to reliably feed out one log from a log that has been conveyed from the preceding step or a log group that is waiting to be stored on a conveyor. , A first receiving frame whose rear end is vertical and whose upper surface has a downward slope in the conveying direction within an interval between adjacent conveyors at arbitrary intervals in the conveying direction, and in the vicinity of this first receiving frame The second receiving frame is arranged so that the upper surface thereof has an upward slope with respect to the conveying direction by shifting the phase in the direction orthogonal to the conveying direction, and the first receiving frame and the upward slope surface are provided with the log detector. A pair of the second receiving frames is arranged inwardly at right intervals in the direction orthogonal to the transport direction, and pinion gears are meshed between the rack gears engraved on the facing surfaces of both receiving frames of each set. It is able to move up and down in opposite directions.

Further, a gantry that is movable in a direction orthogonal to the transport direction is placed at arbitrary intervals, and a pair of transfer conveyors are installed on both sides of the gantry orthogonal to the transport direction. At the extension positions on both sides, a pusher that can move back and forth in a direction orthogonal to the transport direction is installed above the transporting surface of the raw wood, and both pushers are attached to both ends of the raw wood by the length measuring device attached to this pusher. When the forward movement of the raw material is stopped by abutting the end portion, by measuring the length of the raw material, when eliminating the deviation state of the raw material in the longitudinal direction on the conveyor,
It prevents sliding of the lower part of the log and the upper surface of the conveyor in the longitudinal direction, and measures the length of the log to determine whether or not it is supplied to the next step.

Further, just before the end position of the conveyor, a frame body whose upper portion is curved is installed at a certain angle in the direction orthogonal to the conveying direction and inclined at an angle upward.
Between the sprockets supported before and after each frame, the chain is suspended so as to follow the shape of this frame, and the guide rollers protruding from the arbitrary link parts that make up the chain are supported by the shape of the frame. By engaging the rail portion following the above, the chain is suspended according to the shape of the frame body, so that the raw wood is smoothly supplied to the temporary centering device or the centering device in the next step. is there.

[0012]

When the raw wood transported on the log hall conveyor reaches the terminal end of the log conveyor via the relay conveyor, the first receiving frame is retracted from the transport surface, and the upper surface thereof becomes an upward slope with respect to the transport direction. The second receiving frame is lifted so as to project from the transport surface, and it is confirmed by the log detector that the front surface of the raw tree has come into contact with the upslope surface of the second receiving frame, and the raw tree is lower than the transport surface of the relay conveyor. Accept at the position to ensure the movement of the center of gravity of the log. After that, the first receiving frame and the second
When the logs are placed in a V-shape with the heights of the receiving frames substantially the same, the diameter of the logs is detected by the log diameter detector, and if the logs are within the allowable limit, the first receiving frame is moved to the transport surface. The second receiving frame is made to project from the bottom, and the second receiving frame is moved below the conveying surface to be transferred onto the transfer conveyor. The raw wood delivered to the delivery conveyor is moved from both sides in the conveying direction toward the ends of both wood mouths of the raw wood that are in the process of transfer, and a pair of left and right pushers are equidistant until the left and right pushers touch both wood mouths at the same time. , The transfer conveyor is moved laterally with the gantry, while
A pulse signal is transmitted from the length measuring instrument until the pair of pushers come into contact with both ends of the raw wood from the left and right standby positions.The raw wood length is measured based on this pulse signal, and the raw wood has an allowable limit. If it is inside, the rotation of the transfer conveyor shall be continued. Next, the raw wood transferred on the transfer conveyor reaches the starting end position of the hook conveyor, is lifted by a pair of hooks, and is guided obliquely while the guide rollers are regulated by the rails in accordance with the shape of the frame body, and temporary wood centering is performed. It is delivered to the location.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus for directly carrying out the method of the present invention will be described below with reference to the accompanying drawings.
At the end of the log hole conveyor 2 that conveys the log 1,
A relay conveyor 3 which is common to the axis of the loghole conveyor 2 is connected inwardly orthogonal to the transport direction, and a rear end of the relay conveyor 3 is vertically inwardly inwardly orthogonal to the transport direction of the relay conveyor 3. The first receiving frame 4 whose upper surface has a downward slope with respect to the carrying direction and the first receiving frame 4 in the vicinity of the first receiving frame 4 are shifted in phase in a direction orthogonal to the carrying direction so that the upper surface has an upward slope with respect to the carrying direction. A second receiving frame 5 to which a log detector 5A such as a proximity switch, a limit switch and a reed switch is elastically attached via a spring is arranged on the upper surface of the first receiving frame 4 and the second receiving frame 4. A pair of receiving frames 5 are arranged at regular intervals. By engaging the pinion gear 7 between the rack gears 6 engraved on the facing surfaces of the two receiving frames of each set and following the drive of the prime mover 8, the first receiving frame 4 and the second receiving frame 5 are moved in opposite directions. It is moved up and down to constitute a feeding device for the raw wood 1.

Further, the log 1 conveyed from the preceding stage process
In order to select whether or not the log matches the log centering device of the next step, a log diameter detector 9 including a photoelectric tube, a proximity switch, etc. is installed on the side of this log 1 feeding position, and the log Driving and stopping of the hall conveyor 2 and the relay conveyor 3 are controlled.

A moving member 10 such as a slide rail or a linear way as shown in the drawing is laid in a direction orthogonal to the conveying direction at an arbitrary interval so as to be continuously provided at the feeding position of the log, and four corners are provided on the moving member 10. To linear block 11
The pedestal 12 supporting the above is mounted, and a pair of transfer conveyors 13 are installed on both sides of the pedestal 12 orthogonal to the transport direction. On the pair of support bases 14 installed at the outward extension positions of the transfer conveyors 13, the moving member 15 similar to the above is laid above the transport surface of the log 1 and in the direction orthogonal to the transport direction, A detection frame 17 having a pressing body 16 attached to the front end is placed on the moving member 15, and the tip of a piston rod 19 of a fluid cylinder 18 installed on one side of the support 14 is attached to the detection frame 17. And the lower part of the link 20 pivotally supported by the one detection frame 17,
By connecting the intermediate portion of the link 20 pivotally supported by the other detection frame 17 by the connecting bar 21, the pair of push bodies 16 can be brought into contact with and separated from each other in the direction orthogonal to the transport direction.

Further, fluid cylinders 22 each having a built-in encoder and having a length measuring function are connected to the front ends of the respective detection frames 17, and one of the pressing bodies 16 is brought into contact with the end of the opening of the log 1. After that, the prime mover 23 is operated to move the gantry 12 in the direction orthogonal to the transport direction until the other end of the wood comes into contact with the other pusher 16. It is possible to measure the length of a raw wood when it comes into contact with and stops its forward movement. Further, end detectors 24 that detect the vicinity of both ends of the log 1 are installed at positions near the start ends of the pair of transfer conveyors 13, and each of the end detectors 24 detects both ends of the log 1. The prime mover 23 is rotated normally or reversely until it is detected,
Is moved in a direction orthogonal to the transport direction.

Near the end position of the transfer conveyor 13, a frame 25 whose upper portion is curved is formed.
A pair of diagonally upward slants are installed at arbitrary intervals in the direction orthogonal to the conveying direction, and the chain 27 is inserted between the sprockets 26 supported in front of and behind each frame 25 so as to follow the shape of the frame 25. Suspend. That is, by engaging the guide roller 29 projectingly supported from an arbitrary link 28 portion constituting the chain 27 with the rail 30 portion following the shape of the frame 25, the sprockets supported before and after the frame 25 are supported. The chain 27 is suspended between 26 in accordance with its shape. In the illustrated example, the frame 25 is made of H-shaped steel, and the inner step portion of this H-shaped steel is used as the rail portion. In addition, a plurality of hooks 31 are installed on the chain 27 at arbitrary intervals to support the log 1 and the hook conveyor 3 is provided.
2, the hook conveyor 32 has a gentler inclination than near the upper portion, and its end portion is located above the spindle center of the veneer race and at the beginning of the machine frame 33 installed over a certain length. is doing.

The starting end portion of the machine frame 33 is composed of gate-shaped support columns standing upright on the front, rear, left, and right sides, and a pair of vertical step feed shafts 34 are supported on the support columns at arbitrary intervals. And a vertical guide 35 such as a slide rail or a linear way arranged between columns supporting the raw wood 1 in the conveying direction.
A mounting member 36 is fitted and mounted, and the longitudinal feed shaft 34 is screwed onto the longitudinal feed motor 3 connected to the base end thereof.
It is configured so that it can be raised and lowered by the rotation of 7.

On the fitting 36, a lateral guide 38 similar to the above description is provided between the raw wood temporary centering device and the raw wood centering device.
A pair of horizontal guides are vertically laid at a predetermined interval, and a V-shaped pedestal 39 on which the log 1 transferred from the hook conveyor 31 is transferred and placed on the pair of lateral guides 38 is mounted. is doing. Further, a horizontal step feed shaft 40 is supported in the horizontal direction of the fixture 36, and a V-shaped receiving stand 39 screwed to the horizontal step feed shaft 40 is connected to one end of the horizontal feed motor. 41 allows it to move back and forth in the horizontal direction.
If the weight of the fixture becomes too large, it is preferable to incorporate a balance weight, a fluid cylinder, or the like in the column to support the weight.

At this time, a starting point detection body (not shown) is installed near the terminal end of the hook conveyor 31 so that it can be raised and lowered for a certain distance while contacting the lower surface of the log 1 by a spring, fluid pressure or the like. In addition, at the upper position, a plurality of photocells in the vertical direction are arranged facing each other on the left and right sides so as to be detected as a plurality of stages of measurement points according to the diameter of the log, and the light is emitted from the projector 42. The light source is placed at an angle across the vertical position of the V-shaped pedestal 39 on which the log 1 is placed and ascends, and the light receivers 43 are arranged at the diagonal positions.

According to the above embodiment, the V-shaped cradle 3 is used.
When 9 rises, the upper surface of the log 1 is contactlessly detected by an upper surface detector such as a photoelectric tube. For example, the log 1 placed on the pedestal 39 in the vicinity of the vertical step feed shaft 34. Stepping shafts for screwing inverted V-shaped detectors that come into contact with the upper surface of each of the stepping shafts are installed, and the chain is suspended between the sprockets installed at the end portions of these stepping shafts, and one of the stepping shafts is suspended. The pair of pedestals may be physically contactable and separable by driving a prime mover arranged on the shaft. At this time, if the prime mover is connected to one end of the other step feed shaft, the detector after operation can be independently lifted.

Next, at the tip position of the horizontal traverse feed shaft 40, the raw wood 1 is rotated around a temporary center as a rotation center, and a raw wood core for detecting cross-sectional contours at a plurality of positions in the longitudinal direction thereof. A dispensing device is installed. That is, a pair of left and right slide rails arranged in the axial direction of the raw wood,
A base 45 is mounted on a guide 44 such as a linear way, the base 45 is screwed onto a lateral feed shaft 46, and the base 45 on the lateral feed shaft 46 is mounted by driving a prime mover 47 attached to one end. , Is configured to be movable back and forth in the axial direction.

On the pair of left and right bases 45, a pair of grasping fluid cylinders 48 are attached so as to face each other, and the tip end of a piston rod 49 thereof is fitted and inserted substantially in the center of the base 45. It is attached to the rear end of the supported spindle 50 so as to grasp both ends of the log 1. A gripping claw 51 that grips the end face of the raw wood 1 is attached to the tip of the spindle 50, and the chain wheel 5 that passively rotates the motor 52 installed on the base 45 through the chain 53.
4 is slidable in the axial direction and is integrally inserted in the rotational direction. At this time, a large gear 55 is slidable in the axial direction and integrally fitted in the rotation direction on the driven side spindles 50 located opposite to each other. Further, the pinion gear 57 of the rotary encoder 56 attached to the base 45 is meshed with the pinion gear fitted to the shaft portion of the linkage gear, and the rotation angle of the log 1 is set at every arbitrary angle. A log rotation angle detector for measurement is arranged.

On the other hand, the horizontal beam 58 is provided with a plurality of detection bodies 59 each having an arbitrary length along the longitudinal direction of the log 1 and having a detection area in which adjacent ones are in close contact with each other ( Displacement amount detectors for detecting each arbitrary cross-sectional contour are installed by the number of the detectors 59. That is, a pin near the base of the displacement arm 61 is pivotally supported by a pin between a pair of side plates 60 attached to the side of the horizontal beam 58 where the log 1 is loaded, and a displacement fluid cylinder 62 is pivotally mounted at the front of the horizontal beam 58. In addition to supporting, the tip of the piston rod 63 is pivotally supported on the displacement arm 61, and the detection body 59 of an arbitrary length, which is always attached to the tip of the displacement arm 61, is always attached to the displacement arm 61 by fluid motion with the pin contact portion as a fulcrum. The outer peripheral surface of No. 1 is balanced so as to abut. Further, the amount of swing displacement of the displacement arm 61 is detected by an encoder incorporated in the displacement fluid cylinder 62.

At this time, the coordinate value of the axial center of the largest straight cylinder of the log 1 is basically determined by the data of each sectional contour obtained from the displacement amount detectors located at least in the vicinity of both longitudinal ends of the log 1 and in the center. The data of each remaining cross-sectional contour is used as a correction signal when the center of each maximum inscribed circle is converted to the coordinate value origin of the axis and becomes smaller than the maximum radius of the maximum right circular cylinder. .

Further, if the length of the supplied raw wood becomes short (in the illustrated example, the length of the raw wood is set to three stages, and the number of the detectors 59 is 13 or 11 depending on the length of the raw wood.
, 9), and the displacement arms 6 located near both ends of the log 1 because the portions near the both ends of the log 1 are used as the axial core determining portions.
1 and the displacement fluid cylinder 62 incorporating the displacement amount detector are not fixedly installed, and the detection position can be freely moved according to the length of one log. That is, similarly to the above description, an arm guide 64 such as a slide rail or a linear way is attached to the cross beam 58, an arm moving body 65 is attached to the arm guide 64, and the adjustment fluid cylinder attached to the cross beam 58. The tip of the piston rod 67 of 66 is attached to the displacement arm 61,
The displacement arm 61 and the displacement fluid cylinder 62 located near both ends and both ends are movable. At this time, the total distance of the detection areas of the detection body 59 at the tip of the displacement arm 61 and the length of the log 1 are set to be substantially the same.
The total distance of the pivotal support portion of the displacement arm 61 is set to be smaller than the total distance of the detection area at the tip thereof, and the pivotal support portion of the displacement arm 61 is supported by the cross beam 58.
Since it is necessary to be movable with respect to the longitudinal direction of the tree, any arbitrary detector 5 located inwardly adjacent to both ends of the log 1
The displacement arm 61 of 9 is designed to be tilted from its pivotal position in the axial direction of the log 1, and is retracted from the position in contact with the outer periphery of the log 1.

Next, between the centering position of the raw wood and the position near the spindle 68 of the veneer lace, a pair of inclined beams 69 can be moved forward and backward in opposite directions by an advancing and retracting mechanism, and each inclined beam 69 is moved by a reciprocating mechanism. The transfer claw 70 is reciprocally movable in the tilt direction, and the tilt beam 69 is mounted so as to be lifted and lowered by a lifting mechanism. That is, the machine frame 33
Similar to the above description, a moving member 71 such as a slide rail or a linear way is attached to the log 1 in a direction orthogonal to the log 1 conveying direction with a certain space above and below, and the linear block 72 is attached to the moving member 71. The support shaft 73 supported by the machine frame 33 is installed so that the feed shaft 74 supported horizontally in the machine frame 33 can be moved back and forth by the prime mover 75.
Similar to the above description, a transfer table 78 is mounted on a transfer table 76 such as a slide rail or a linear way, and a piston rod 80 of a fluid cylinder 79 for a tilted beam attached to a support table 73 is installed on the transfer table 78. The transfer table 78 is configured to be movable back and forth in opposite directions by fluid movement.

At the front part of the transfer table 78, a pair of guides 81 such as a linear way are provided at regular intervals in the raw wood conveying direction.
Is installed in the up-down direction, and an inclined beam 69 from the centering position of the raw wood to the position near the spindle 68 of the veneer race is mounted on these guides 81. Also, this inclined beam 6
9 is screwed to a vertical feed shaft 82 vertically supported from the upper portion of the transfer table 78, and can be moved up and down by a motor 83 attached to one end thereof, and further attached to one end of the transfer table 78. Rod 8 of the fluid cylinder 84
5 is connected to the slanted beam 69, and the slanted beam 69 and the log 1 at the time of transportation are constantly pulled up at a stepped or stepless pressure to form an elevating mechanism that removes the load of their own weight.

A Y-axis distance measuring device for measuring the amount of movement of the inclined beam 69 on the Y-axis is connected to the vertical feed shaft 82 of the elevating mechanism, and the mechanism linearly changes the amount of movement of a magnetic scale or the like. If it is a fluid actuating mechanism such as a fluid cylinder, rodless cylinder, etc., a rotary encoder that converts the expansion and contraction amount of the rod into a rotation angle for measurement,
Further, in the case of the vertical feed shafts in the illustrated example, a pulse signal obtained by a pulse generator or the like that converts rotation into a pulse signal is converted into a digital signal by a prime mover 83 such as a servo motor that drives these vertical feed shafts. It is output to the computing unit.

An inclined feed shaft 86 is supported on each inclined beam 69 along its inclination direction, and a slide rail laid on the upper and lower sides of the inclined beam 69, a guide 87 such as a linear way, and a linear block 88 are interposed therebetween. The transport claw 70 is supported by the screw and the transport claw 70 is screwed onto the inclined feed shaft 86. In addition, the motor 89 installed at one end of the tilted feed shaft 86 makes the conveying pawl 70 reciprocate in the tilting direction, and the piston rod 91 of the fluid cylinder 90 attached to one end of the tilted beam 69 is connected to the chain 92. A reciprocating mechanism that is connected to the transport claw 70 via the transport claw 70 and constantly pulls up the transport claw 70 and the log 1 held by the transport claw 70 at a stepped or stepless pressure.

The tilting feed shaft 86 of the reciprocating mechanism also has the conveying pawl 7 as in the case of the elevation control of the tilting beam 69.
An X-axis distance measuring device for measuring a movement amount of 0 is connected. The correction data of the turning shaft core obtained by the raw wood centering device is a correction amount on the Cartesian coordinates indicated as a distance on the X axis and the Y axis from the temporary center. The correction amount for the vertical feed shaft 82 and the tilt feed shaft 8
It is a movement on 6 and because both are not orthogonal coordinates,
In order to output the correction data to the conveying claw 70, it is necessary to correct the angle of either the vertical feed shaft 82 or the tilt feed shaft 86 in the arithmetic unit.

That is, regarding the angle correction when the tilt feed shaft 86 is replaced with the X axis, the X axis in the raw wood centering device is corrected to the angle of the tilt feed shaft 86.
If the vertical feed shaft 82 is regarded as the Y-axis, the inclined feed shaft 86
On the other hand, the Y-axis in the raw wood centering device is corrected to the angle of the inclined feed shaft 86 so that the vertical feed shaft 82 has the orthogonal coordinates.

Next, the operation of the above embodiment will be described. First, the log 1 conveyed from the preceding stage process is placed on the log hole conveyor 2, and at this time, the log diameter detector 9 transfers the log 1 from the log hole conveyor 2 via the relay conveyor 3 to the transfer conveyor. When it is detected that the diameter of the log 1 to be loaded onto the log 13 and specifications do not match the log centering device, the drive of the log hole conveyor 2 is stopped,
The log 1 is discharged. Next, by driving the prime mover 8, the pinion gear 7 is rotated in the normal direction, and the rack gear 6 in the meshed state is vertically moved. That is, while the first receiving frame 4 is retracted from the conveying surface, the second receiving frame 5 whose upper surface has an upward slope with respect to the conveying direction is lifted to project from the conveying surface and is conveyed from the relay conveyor 3. The log detector 5A confirms that the lower part of the log 1 comes into contact with the trailing end of the relay conveyor 3 and the front surface of the log 1 comes into contact with the upslope surface of the second receiving frame 5 after the incoming log 1 is ready to be received. When the log 1 is received at a position lower than the conveying surface of the relay conveyor 3 to ensure the movement of the center of gravity of the log 1, the log 1 has its lower portion at the terminal end of the relay conveyor 3 and its front surface at the second receiving frame 5. The vehicle is once regulated by the ascending slope and then stopped.

After stopping the log 1 in the conveying direction,
By rotating the pinion gear 7 in the reverse direction, the first and second receiving frames 4, 5
Under the condition that the upper parts of the logs are the same, the log 1 is the log detector 9
The diameter is detected by, and if the material is an unqualified material having a large diameter or a small diameter exceeding the allowable limit for supplying it to the raw wood centering device, the raw wood 1 is removed. Also,
If the log 1 is within the allowable limit, the receiving position of the delivery conveyor 13 is adjusted with respect to the longitudinal position of the log 1 on the pair of first and second receiving frames 4 and 5. That is, if the end detectors 24 installed at both ends on the gantry 12 simultaneously detect the vicinity of both ends of the log 1, the pair of transfer conveyors 13 located inward and near the end detector 24. Although it is in a position to be transferred to the upper position, either the log 1 or the gantry 12 which has been stopped on the pair of first and second receiving frames 4 and 5 is biased to the right side with respect to the transport direction. When it is placed on the left side, the end detector 24 located on the left side is not detecting the left end portion of the log 1. At this time, the prime mover 23 is driven to move the gantry 12 to the right side. If the left end detector 24 detects the left end of the log 1, the driving of the prime mover 23 is stopped.

Then, by further rotating the pinion gear 7 in the reverse direction, the first receiving frame 4 is projected and the second receiving frame 4
By immersing the receiving frame 5 below the conveying surface, the receiving frame 5 is transferred onto the transfer conveyor 13. At this time, if the supply amount of the raw wood 1 from the preceding stage process is large compared to the processing capacity of the next-stage raw wood centering device and a plurality of the raw woods 1 are waiting to be stored on the log hole conveyor 2, When the first receiving frame 4 rises, the vertical portion of the rear end prevents the adjacent rear logs 1 from being fed out.

The raw wood 1 delivered to the transfer conveyor 13 is transferred forward as the transfer conveyor 13 rotates. By operating the fluid cylinder 18, one of the support bases 14 is transferred. When the raw wood 1 is moved in the longitudinal direction, the other support base 14 is also moved forward by the equidistant distance via the connecting bar 21, and the pair of pushers 16 installed in the front portion of the raw wood 1 together with the end portions of the mouth end. When contacting
The approaching movement of the pusher 16 is stopped. That is, if the log 1 is conveyed while being deviated to the right with the center line of the transfer conveyor 13 as the boundary, the pair of pushers 16 move forward from the left and right standby positions by the same distance, and the right pushers 16 come first. When the raw wood 1 is brought into contact with the right wood mouth end portion and is continuously pushed from the right side in the left direction orthogonal to the transport direction, the transfer conveyor is pushed to the left side on the moving member 10 together with the pedestal 12 to the left wood mouth end portion. When the pushing body 16 on the left side comes into contact, if the pushing body 16 is stopped, the log 1 will be positioned with the center in the longitudinal direction thereof as a boundary.

The raw wood 1 whose longitudinal position has been regulated while being transferred on the transfer conveyor 13 reaches the starting end position of the hook conveyor 32, is lifted by a pair of hooks 31 and is conveyed obliquely to reach the temporary centering position of the raw wood. Is brought in. At this temporary log centering position, the starting point detector falls down almost to the conveying surface by its own weight while being in contact with the lower surface of the log 1, and the hook conveyor 32 temporarily stops at this position.
Next, when the mounting tool 36, which is positioned at the lower end of the pair of left and right vertical step feed shafts 34 and makes the V-shaped receiving stand 39 stand by at the starting end position, is moved up as the prime mover 37 is driven, The log 1 located on the end of the hook conveyor 32 is
It is transferred and placed on the pair of pedestals 39. At the time of this transfer, the starting point detection body releases contact with the lower surface of the log 1 and the reading is started with the rising amount of the pedestal 39 as the pulse amount with this as the starting point, and the upper surface of the log 1 moves vertically. Projector 42 and photoreceiver 4 of arbitrary photocells positioned in plural
It is accumulated until it is detected in 3.

At this time, one diameter of the raw wood is large due to the photoelectric tube,
It will be determined which of the three steps or the two steps of the medium diameter and the small diameter it belongs to, and the accumulated rise amount is subtracted from the distance from the measurement point of an arbitrary phototube to the starting point detector, The distance from an arbitrary measurement point to the center of the grip claw 51 of the raw wood centering device is subtracted from the radius of the diameter, and the pedestal 39 is raised by the remaining amount.

When the temporary center of the log 1 is determined, the pair of pedestals 39 are laterally guided 38 by the lateral step feed shaft 40 by a fixed amount.
It is assumed that the temporary center portion is brought to a line connecting the centers of the pair of left and right gripping claws 51 of the raw wood centering device.
At this time, the detection body 59 having an arbitrary length along the longitudinal direction of the log 1 and having a detection area in which adjacent ones are in close contact with each other has the log 1 diameter determined as described above. Waiting accordingly.

On the other hand, the base 45 supporting the gripping claws 51 is, for example, 3 shaku or 4 shaku depending on the length of the raw wood to be loaded.
Guide the traverse feed shaft 46 on the basis of the length of 6 scales, 6 scales, etc.
4 is appropriately advanced and retracted by driving the prime mover 47 and is fixed on the shaft, and the raw wood 1 is gripped by the gripping claws 51 in accordance with the operation of the pair of gripping fluid cylinders 48.
After gripping, the pedestal 39 descends by driving the prime mover 37, and moves back to the standby position by driving the prime mover 41 to prepare for the next log.

During this time, each of the detection bodies 59 is in contact with the outer circumferential surface of the raw wood 1 in the longitudinal direction. Further, if the motor 52 is driven to rotate the grip claws 51 at least once, the amount of this rotation is changed. The rotation angle detector and each arbitrary cross section in the longitudinal direction of the log 1 are synchronously detected by the displacement amount detector as the amount of displacement of the displacement arm 61 from the line connecting both end faces of the log 1.

That is, in the log rotation angle detector, the rotation angle of the driven side gripping claw 51 is sequentially detected by the rotary encoder 56, while in each displacement amount detector, from the rotation center axis of each arbitrary section. The radius and declination of the displacement arm 61 are grasped with each pin contact portion as a fulcrum, and each displacement amount is sequentially detected by the encoder incorporated in the displacement fluid cylinder 62. Therefore, the electric signal of the arbitrary angle detected by the log rotation angle detector and the electric signal of the displacement amount detected by the displacement amount detector are synchronously taken out, and the cross-sectional contours of a plurality of arbitrary positions are detected. .

Next, the operating system will be described with reference to the block diagram shown in FIG. 16. The outer peripheral contour for each arbitrary cross section (11 locations in the illustrated example) obtained based on the displacement amount is calculated in the calculator. The signal is temporarily stored in the memory as the radius of the cross section perpendicular to the axis from the temporary center, and among the signals from this memory, the central part of the log 1 and the vicinity of both ends (in the illustrated example, the position inside one adjacent to the outermost position). The axial center of the largest right circular cylinder can be obtained from the respective maximum inscribed circles that are obtained based on the signals of the three cross sections of the detector.

On the other hand, in each of the remaining eight cross-sectional shapes other than the above-mentioned three cross-sections, the coordinate values stored in the memory are converted into the coordinate values of the axial center of the largest right circular cylinder obtained as described above. , The maximum inscribed circle for each cross section and its radius are obtained based on the coordinate values after this conversion, and then the discriminator determines whether or not each cross section has entered the maximum right circular cylinder. However, if it has entered, it is returned to the inside of the computing unit as a correction signal of the turning axis core. If it has not entered, it is output to the prime mover 83 of the lifting mechanism and the prime mover 89 of the reciprocating mechanism as follows. To do.

Next, the slant beam fluid cylinder 79 is actuated to cause the conveying claws 70 to bite into the upper part of the end faces of both the wood mouths of the log 1, and then the gripping claws 51 are separated from the end faces of the both wood mouths. Each conveying claw 7 for the turning axis of the log 1.
The correction according to the following procedure on the X axis and the Y axis of 0 may be completed before the grip conversion or, conversely, may be performed after the grip conversion. That is, the coordinate values of the obtained turning axis of the log 1 and the deviations of the X axis and the Y axis from the rotation center, which is the tentative center, are calculated for each end of the log 1, and the X axis deviation is reciprocated to the left and right. It outputs to each motor 89 of the moving mechanism separately, and guides 87
The feed claw 70 is moved forward along the inclined feed shaft 86 along with, and the forward movement amount sequentially detected by the encoder is fed back to the arithmetic unit to accurately control the correction amount. The tilt beam 69 is moved down on the vertical feed shaft 82 along the guide 81 separately to the prime mover 83 of the lifting mechanism, and the descending amount sequentially detected by the encoder is fed back to the arithmetic unit to accurately control the correction amount. is doing.

At this time, the conveying claws 70 of the inclined beams 69 located on the left and right are in the vicinity of the starting end on the inclined feed shaft 86 which is the standby origin, that is, in the negative direction on the X coordinate of the temporary center and the turning axis. If it is screwed at a position that takes into account the deviation prediction, the conveyance claws 70 are separately and independently separated from the deviation from the standby origin with respect to the deviation of the X-axis of the centered ends of both wood mouths. However, if the standby origin is the starting end position of the inclined feed shaft 86, it is moved from the fixed distance in advance in the positive or negative direction by driving the prime mover 89 in advance, and then is moved forward by the fixed distance. Each conveyance claw 70 is independently and independently advanced by the result of addition or subtraction of the deviation.

On the other hand, these left and right slanted beams 69 are located near the upper end on the vertical feed shaft 82 which is the standby origin, that is, the position where the deviation in the positive direction on the Y coordinate of the temporary center and the turning axis is taken into consideration. If it is screwed in, the tilted beams 69 are independently and independently moved from the standby origin to the deviation in the positive or negative direction with respect to the deviation of the Y-axis of the center end of the raw wood 1 from both end faces. , Is moved up and down in advance by driving the prime mover 83, and then lowered by a constant distance. Conversely, if the standby origin is the upper end position of the vertical feed shaft 82, the deviation is added or subtracted from the constant distance in advance. As a result, each inclined beam 69 is lowered independently.

Next, the correction of each deviation will be described more concretely by referring to the former method. Suppose that the center of rotation O is the origin (0, 0) on the coordinates, and the coordinate value of the right axis of the turning axis G is ( GR
X, -GRY), the left xylem coordinate value (-GLX, GLY)
If so, the right conveyance claw 70 moves forward on the tilt feed shaft 86 from the standby origin by (GRX), and the left conveyance claw 70 moves backward on the tilt feed shaft 86 from the standby origin by (GLX).
After that, the left and right conveying claws 70 move forward by a fixed distance, while the right inclined beam 69 moves up from the standby origin on the vertical feed shaft 82 by (GRY), and the left inclined beam 69 moves from the standby origin ( GLY) is lowered on the vertical feed shaft 82, and then the left and right slanted beams 69 are lowered by a constant distance to match the center height of the spindle 68 of the veneer race.

According to the latter method, the right carrying claw 70 is provided.
The distance of (GRX) is subtracted from the constant distance advance amount of No. 1, and the amount of (GLX) distance is added to the constant distance advance amount of the left conveyance pawl 70. To move the left and right conveying claws 70 forward, while adding the amount of (GRY) to the constant distance lowering amount of the right inclined beam 69, and from the constant distance lowering amount of the left inclined beam 69 (GLY).
Then, the left and right inclined beams 69 are lowered on the vertical feed shafts 86 by the calculated respective distances to match the center height of the spindle 68 of the veneer race.

Therefore, the coordinate value of the turning axis G is (0,
0), that is, if it is the same as the rotation center O, the right conveyance claw 70
Also, the deviation correction from each standby origin for the left conveying claw 70 is 0, and the amount of forward movement on each tilt feed shaft 86 is a constant distance, while the right inclined beam 69 and the left inclined beam 69 also deviate from each standby origin. The correction becomes 0, and the descending amount on each vertical feed shaft 82 becomes a constant distance.

On the other hand, the plane position of the veneer lace is the log 1
The movement is controlled to the optimum position based on the data at the time of centering, and this control system will be described with reference to the block diagram. That is, in order to obtain the maximum right circular cylinder, as described above, in the present embodiment, the remaining 8 other than these three cross sections are left in the maximum right circular cylinder obtained by the three cross sections in the central portion of the log 1 and near both ends. It was determined whether the maximum inscribed circle of each cross-sectional shape of the location and its radius were invading.Conversely, the maximum diameter detector detected the maximum right circular cylinder axis as described above. The maximum diameter, which is the position farthest from the coordinate values of the core, is calculated from all arbitrary cross sections (11 locations in the illustrated example), and after this calculation result is output to the plane calculator,
It is transmitted to a stepping shaft motor that advances and retracts the plane on the stepping shaft, and the position of the plane is returned to the inside of the plane arithmetic unit based on a plane position detector.

Therefore, while the raw wood 1 is conveyed by the conveying claw 70 from the centering position to the spindle 68 position of the veneer lace on the inclined beam 69, the veneer race pedestal walks according to the calculation result after the centering. Since it moves forward and backward on the feed shaft and stands by at a position where a slight margin is added to the diameter of the raw wood 1, the raw wood 1 gripped and converted to the chuck of the veneer race from the conveying claw 70 is immediately cut. It will be.

In this embodiment, a plurality of detectors 59 each having an arbitrary length along the longitudinal direction of the log 1 and having a detection area where adjacent ones are in close contact are arranged. Of these, the coordinate values of the axial center of the largest straight cylinder of the log 1 are basically obtained from the data of each cross-section contour obtained from the displacement detectors located in the vicinity of both longitudinal ends of the log 1 and in the center. However, if one log is 3 shaku, 4
If the length is relatively short, twisting, bending, etc., the basic calculation site of the largest straight cylinder is the two cross sections near both ends in the longitudinal direction of the log 1, and the remaining cross section shapes other than these two cross sections. Is, as described above, used as a correction signal for determining whether or not each cross section has entered the maximum right circular cylinder, or for calculating the maximum diameter.

[0054]

As described above, according to the present invention, the rear end is vertical and the upper surface has a downward slope with respect to the conveying direction within the interval between adjacent conveyors at arbitrary intervals in the conveying direction. The first receiving frame and the second receiving frame are arranged in the vicinity of the first receiving frame so as to be out of phase with each other in a direction orthogonal to the conveying direction, and the second receiving frame is arranged so that its upper surface has an upward gradient with respect to the conveying direction. A pair of receiving frames and a second receiving frame equipped with a log detector on the upslope surface are arranged in a pair at regular intervals inward in the direction orthogonal to the transport direction, and the receiving frames of the two receiving frames of each set are opposed to each other. Engage the pinion gear between the engraved rack gears,
Since the logs can be moved up and down in opposite directions, even if the log is transferred from the preceding process, the log detector will confirm the transfer at both ends in the longitudinal direction and accept the log at a position lower than the conveyor transfer surface. The center of gravity of the log can be reliably moved.

Further, a gantry that is movable in a direction orthogonal to the transport direction is placed at arbitrary intervals, and a pair of transfer conveyors are installed on both sides of the gantry orthogonal to the transport direction. At the extension positions on both sides, a pusher that can move back and forth in a direction orthogonal to the transport direction is installed above the transporting surface of the raw wood, and both pushers are attached to both ends of the raw wood by the length measuring device attached to this pusher. Since the length of the log can be measured when it abuts against the end and its forward movement stops, sliding the lower part of the log and the upper surface of the conveyor in the longitudinal direction when eliminating the deviation in the longitudinal direction of the log on the conveyor. In addition to preventing contact, it is possible to determine the supply to the next process by measuring the length of the raw wood.

Further, just before the end position of the conveyor, a frame body whose upper portion is curved is installed at a slanting diagonally upward direction at arbitrary intervals in a direction orthogonal to the conveying direction.
Between the sprockets supported before and after each frame, the chain is suspended so as to follow the shape of this frame, and the guide rollers protruding from the arbitrary link parts that make up the chain are supported by the shape of the frame. Since the chain is suspended according to the shape of the frame by engaging with the rail part following the above, it occurs at the time of passing the raw wood from the inclined conveyor to the horizontal conveyor as described above. The obstacles such as the damage of the claw-shaped portion and the collision with the log are eliminated, and the log is smoothly supplied to the temporary centering device or the centering device which is the next step.

[Brief description of drawings]

FIG. 1 is an explanatory diagram schematically showing the overall movement of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a side view of FIG.

FIG. 4 is an enlarged side view of part A of FIG.

FIG. 5 is a front view of FIG.

FIG. 6 is an enlarged plan view of a B part in FIG.

FIG. 7 is a front view of FIG.

FIG. 8 is an enlarged side view of a C portion of FIG.

9 is an enlarged front view of a main part of FIG.

FIG. 10 is an enlarged side view of a portion D in FIG.

FIG. 11 is an enlarged side view of a portion E of FIG.

FIG. 12 is an enlarged front view of a portion F of FIG.

FIG. 13 is an enlarged side view of FIG.

FIG. 14 is an enlarged side view of a G part in FIG.

FIG. 15 is an enlarged side view of FIG.

FIG. 16 is a block diagram showing a control system of the present invention.

[Explanation of symbols]

1 ... log, 2 ... log hall conveyor, 3 ... relay conveyor, 4 ... first receiving frame, 5 ... second receiving frame, 5A ... log detector, 6 ... rack gear, 7 ... pinion gear, 8 ... prime mover,
9 ... Log diameter detector, 10 ... Moving member, 11 ... Linear block, 12 ... Stand, 13 ... Transfer conveyor, 14 ... Support stand, 15 ... Moving member, 16 ... Pushing body, 17 ... Detecting frame, 1
8 ... Fluid cylinder, 19 ... Piston rod, 20 ... Link, 21 ... Connecting bar, 22 ... Fluid cylinder, 23 ... Motor, 24 ... End detector, 25 ... Frame, 26 ... Sprocket, 27 ... Chain, 28 ... Link, 29 ... Guide roller,
30 ... Rail, 31 ... Hook, 32 ... Hook conveyor, 3
3 ... Machine frame, 34 ... Vertical step feed shaft, 35 ... Vertical guide, 36 ... Fixture, 37 ... Vertical feed motor, 38 ... Horizontal guide, 39 ... Cradle, 40 ... Horizontal step feed shaft, 41 ... Traverse feed motor , 42 ... Projector, 43 ... Receiver, 44 ... Guide, 45 ... Base, 46 ...
Lateral feed shaft, 47 ... motor, 48 ... holding fluid cylinder,
49 ... Piston rod, 50 ... Spindle, 51 ... Gripping claw, 52 ... Motor, 53 ... Chain, 54 ... Chain wheel, 55 ... Large gear, 56 ... Rotary encoder, 57
... Pinion gear, 58 ... Horizontal beam, 59 ... Detecting body, 60 ... Side plate, 61 ... Displacement arm, 62 ... Displacement fluid cylinder, 63 ...
Piston rod, 64 ... Arm guide, 65 ... Arm moving body, 66
... Adjusting fluid cylinder, 67 ... Piston rod, 68 ...
Spindle, 69 ... Inclined beam, 70 ... Conveying claw, 71 ... Moving member, 72 ... Linear block, 73 ... Supporting base, 74 ... Feed shaft, 75 ... Motor, 76 ... Transfer rack, 77 ... Linear block, 78 ... Transfer base , 79 ... Fluid Cylinder for Inclined Beam, 8
0 ... Piston rod, 81 ... Guide, 82 ... Vertical feed shaft, 8
3 ... Prime mover, 84 ... Fluid cylinder, 85 ... Piston rod, 86 ... Inclined feed shaft, 87 ... Guide, 88 ... Linear block, 89 ... Prime mover, 90 ... Fluid cylinder, 91 ... Piston rod, 92 ... Chain,

Continued Front Page (72) Inventor Masanori Murakami 1054, Isshiki Kubo, Komaki City, Aichi Prefecture

Claims (3)

[Claims] 1. A first receiving frame having a vertical rear end and an upper surface having a downward slope with respect to the transport direction in an interval between adjacent conveyors at arbitrary intervals in the transport direction, and the first receiving frame.
The second receiving frame is arranged in the vicinity of the receiving frame in a direction orthogonal to the conveying direction in a direction orthogonal to the conveying direction, and the second receiving frame is arranged so that its upper surface has an upward slope with respect to the conveying direction. A pair of second receiving frames provided with detectors are arranged inward at right intervals in the direction orthogonal to the transport direction, and pinion gears are provided between rack gears engraved on opposite faces of both receiving frames of each set. The raw wood supply device is characterized in that it is meshed with each other and is movable up and down in opposite directions. 2. A gantry that is movable in a direction orthogonal to the carrying direction is placed at arbitrary intervals, and a pair of transfer conveyors are installed on both sides of the gantry that are orthogonal to the carrying direction.
At the extended positions on both sides of this transfer conveyor, there are installed pushers that can move back and forth in a direction orthogonal to the transport direction above the log transport surface, and both pushers can be moved by a length measuring device attached to this push body. A raw tree supply device, which is capable of measuring the length of a raw tree when the forward movement of the raw tree comes into contact with both ends of the raw tree. 3. A frame body having an upper portion curved at a position close to the end position of the conveyor is installed at a certain angle in a direction orthogonal to the conveying direction and is inclined obliquely upward. The chain is suspended between the front and rear sprockets so as to follow the shape of this frame, and the guide rollers that project from the arbitrary link parts that make up the chain are supported by a rail that follows the shape of the frame. A supply device for raw wood, characterized in that the chain is suspended according to the shape of the frame body by engaging with the portion.