JPH0250842B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a veneer lace for cutting sheet-like veneer veneers from raw wood, and in particular, in rough peeling lace, from centering the raw wood to carrying it into the lace, rough peeling,
It also involves automating a series of operations from the time the rough peeling is completed until the logs are transported out of the lace.

In veneer cutting using veneer lace, the raw wood is loaded into a lace spindle and cut. At first, the veneer is produced intermittently from the outer circumferential surface of the irregularly shaped raw wood. Eventually, when the cross section of the raw wood becomes approximately circular, it becomes a continuous band. Manufactured to. As the cutting progresses further and moves to the core wood, the wood becomes weaker and pieces of veneer are peeled off.Finally, after cutting to around the outside diameter of the spindle that grips the log, the log is removed from the spindle. The cutting of one log is completed.

The above-mentioned cutting stages for a single raw wood are called rough peeling, main peeling, and core peeling, and the best quality veneer is usually produced during main peeling, so
A large number of veneers are cut to a thinner thickness and used for the front and back veneers of plywood products. In addition, the veneer that is rough-peeled and core-peeled is peeled relatively thickly to make what is called a necessary veneer, which can be used in plywood products.

Logs are stored in storage ponds, etc., but generally there is sand and gravel attached to the outer surface of the logs, and sometimes iron rings from mooring are buried. These foreign substances cause chipping of the blade of the veneer cutting blade during rough peeling of raw wood for veneer lace, and cause damage such as streaks on the subsequent cut veneer, leading to a deterioration in the quality of the veneer.

As a countermeasure to these problems, pretreatment is performed to remove the epidermis and foreign substances, but it is not perfect. Furthermore, an attempt was made to separate the cutting into two machines, one for rough peeling, one for main peeling, and one for core peeling. Loading the logs into the lace spindle while doing so, and transporting the logs are time-consuming, resulting in laces with extremely low operating rates.

The present invention solves the above-mentioned bottleneck in order to streamline the process of carrying in raw wood, loading it into the race, and carrying out the raw wood after cutting in a veneer race exclusively for rough peeling.
A log centering device is installed just before the veneer race, which detects the diameter of the log in advance on the conveyor, centers the log according to the diameter, and loads the log into the veneer race in the centered state. The machine is characterized in that a device for receiving and unloading logs to be carried out is placed directly below the spindle of the veneer lace, and a live roller is connected to a carry-out conveyor that takes out the logs out of the lace machine.

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows a side view of the entire apparatus, and 1 is a log. Reference numeral 2 denotes a carry-in conveyor, which is installed in front of the log loading/unloading side of the veneer race 20, and transports the logs 1 in the direction of arrow A. Reference numeral 3 denotes a log diameter detection device, which is arranged in the middle of the carry-in conveyor 2, and is composed of an image sensor or the like that detects the outer diameter by irradiating the outer circumferential surface of the logs during transportation, and sends the detected log diameter signal to the control device 60. It is something to convey.

Reference numeral 4 denotes a carry-in conveyor, which is composed of a plurality of conveyor chains whose starting end overlaps with the conveyor 2 and whose terminal end extends near a log holder 12 of a log centering device 10, which will be described later. The transferred log is transferred to the log holder 12.

The carry-in conveyor 4 is stopped by a detection device (not shown) such as a limit switch that detects when the loaded and transferred logs 1 have reached the vicinity of the center of the log holder 12, and the stop signal causes the next log alignment mechanism (not shown) to stop. ). It should be noted that a simplified type in which the two carrying-in conveyors 2 and 4 described above are integrated into one, or in which the log alignment mechanism is omitted may also be adopted.

Reference numeral 13 denotes support frames erected on the left and right in front of the log import/export side of the veneer lace 20 with the import conveyor 2 in between, and from the upper surface thereof to the mounts 20H mounted on the upper surfaces of the left and right frames 24 of the veneer lace. Running rails 16 are installed on the left and right sides, respectively. Further, a transfer trolley 14 is mounted on the rail 16 and is movable in the direction of arrows E-F via wheels 14W, and a gripping claw 15H is slidable in the axial direction of the logs 1 to be carried in by a fluid cylinder or the like. A log clamping mechanism 15 with a log clamping mechanism 15 is suspended from the transfer trolley 14.

Reference numeral 11 denotes a log lifting mechanism, which is disposed at the end of the carrying-in conveyor 4 between the plurality of conveyor chains constituting the conveyor, and is fixed to the lower ends of two sets of log holders 12 each having a V-shaped upper surface. It is composed of two fluid cylinders extending downward, and supports the imported log 1 of a predetermined length in two sets of the log holders 12.
The two cylinders can be raised and lowered synchronously in the direction of arrow B from a standby position below the conveyor 4 while receiving the logs over a period of time, and the cylinder axis direction of the lifting mechanism 11 constitutes the center of log centering. There is.

The log alignment mechanism (not shown) usually consists of fluid cylinders, and one set each is installed on the left and right sides near the left and right end surfaces of the logs transferred to the vicinity of the log lifting mechanism 11, with the axis of the cylinder rod parallel to the axis of the logs. Then, in response to the stop signal of the conveyor 4, the left and right rods approach the log at the same speed, and after continuing to push the log on the conveyor 4 from the left and right end faces, the left and right rods return simultaneously by a timer or the like, and the rod is transferred to the veneer lace 20.
They are aligned so that they are located between the left and right spindles 25. When the log alignment has returned to its original position on both the left and right sides, a signal indicating the end of the log alignment is given.

The log elevating mechanism 11 waiting below the carry-in conveyor 4 is raised by the signal of completion of the log arrangement, and
(If there is no log alignment mechanism, it will rise by the stop signal of the carry-in conveyor 4.) On the way, the log 1 is received by the log holder 12 and continues to rise, and the amount corresponds to the diameter of the log detected in advance by the log diameter detection device 3. The horizontal center of the log at the stop position is at a height that exactly matches the center of the spindle 25 of the veneer race 20, and the so-called centering of the log is performed. It will be destroyed. Therefore, the smaller the diameter of the log, the greater the amount of lift, and these operations are carried out by automatically raising and stopping the log lifting mechanism 11 according to commands from the control device 60.

When the log elevating mechanism 11 stops rising, it issues a centering completion signal and moves on to the next log clamp. The log clamping mechanism 15 is suspended from the transport trolley 14, and has grasping claws 15H on the left and right sides that stand by at positions slightly apart from the left and right end surfaces of the log 1, and grips the log 1 from the left and right in the axial direction in response to a centering completion signal. A clamp end signal is issued, and the log lifting mechanism 11, which has stopped rising, begins to descend. Further, the transfer trolley 14 starts moving in the direction of arrow D from arrow E after a suitable time lag after the clamp end signal is issued. Note that the log elevating mechanism 11 that has descended stops at the lower limit to prepare for carrying in the next log.

The transport trolley 14, which moves in the direction of arrow E with the raw wood suspended, stops at the center of the spindle 25 of the veneer race 20 and issues a stop signal, and the race spindle advances towards the raw wood and grips it from the left and right end faces. It outputs a log gripping signal.

The movement section of the transfer trolley 14 is configured to accurately reciprocate from the log centering center on the log lifting mechanism 11 to the spindle center of the veneer race, and the log clamp suspended on the transfer trolley is activated by the log grip signal of the spindle. When the gripping claws 15H of the mechanism 15 move back and away from the left and right end faces of the log 1 and stop at the retreat limit, a clamp opening signal is issued and the transfer trolley retreats in the opposite direction of the arrow E, centering the log on the log lifting mechanism 11. It returns to the old center position and stops.

The above log alignment mechanism (not shown) and log holder 1
The log centering device 10 is configured by the log lifting mechanism 11 having the log lifting mechanism 2 and the transport trolley 14 having the log clamping mechanism 15, or by removing the log aligning mechanism from the above configuration.

The veneer lace 20 is equipped with a planer stand 21 equipped with a veneer cutting blade 22, and can approach or move away from the log 1 in the direction of arrow F using a feed screw (not shown). Further, the planer head receives a log diameter signal of the log 1 gripped by the spindle 25 from the control device 60 in advance, advances to the spindle side to the radial position and waits, and when the spindle finishes gripping the log, the spindle rotates to quickly produce a veneer. It will be produced by cutting.

31 is an elevating mechanism that locks a V-shaped upper log holder 32 at the upper end, and mounts the left and right spindles 2 of veneer lace.
It consists of a set of fluid cylinders etc. arranged in a pit drilled directly below the intermediate position of 5, and is movable up and down in the direction of arrow V. 32S is a log detection device that uses a limit switch or the like, and its upper end slightly protrudes from the V-shaped upper surface of the log pedestal 32, and the outer peripheral surface of the log placed on the pedestal 32 biases the detection device to generate a detection signal. It is arranged so that it shows. that's all,
The log receiving and lowering device 30 is constituted by the lifting mechanism 31 equipped with the log holder 32 and the log detecting device 32S.

Reference numeral 40 denotes a carry-out conveyor, which is a conveyor chain that is perpendicular to the axial direction of the logs 1 held by the veneer race spindle 25, and is arranged on the left and right sides of the log receiving and unloading device 30, with its lower end facing the carry-in conveyor 4 side. Further, the distal end side thereof is configured to be able to swing in the direction of arrow X by a swing mechanism including a fluid cylinder (not shown), etc., with the shaft 40S on the veneer race side as a fulcrum.

In addition, in order to install the log receiving and unloading device 30, conveyor 40, etc. described above, the bed 23 of the veneer race 20 has an opening in the middle so that the log can be unloaded from the center and carried out of the machine. be.

While the log is being cut by the veneer race, the log centering device 10 carries in the next log and centers it, and the log clamping mechanism 15 proceeds with the work of gripping the log, while the log receiving and unloading device 30 is controlled in advance. Upon receiving a log diameter signal from the device 60, it rises to the vicinity of the outer periphery of the log being cut and waits. In addition, the rising standby operates differently depending on the diameter of the log, and the outer diameter is usually 300 to 400 mm.
The above-mentioned logs are raised, but the determination is made based on the value set in advance in the control device 60, and the set value can be changed.

When the cutting of the log progresses using the veneer lace and the cross section becomes approximately circular, press the end cutting button.
The rotation of the spindle is stopped by the control panel 20E of the veneer lace, and the planer stand 21 stops advancing toward the log, and at the same time retreats to a position corresponding to the outside diameter of the log to be brought in next according to a signal from the control device 60. It stops. Note that if the next log to be carried in is smaller in diameter than the log currently held by the spindle, it will be moved back and stopped once, and after the log held by the spindle is completely detached from the spindle 25 and descended by the log receiving and unloading device 30. It moves forward to the log diameter position and waits.

These series of movements of the planer stand 21 are controlled by the veneer lace control panel 20E via the control device 60 which receives a signal from the log diameter detection device 3.

At the same time as the spindle rotation is stopped by operating the cutting end button, the log receiving and unloading device 30 rises, and the log detecting device 32 protrudes from the upper surface of the log holder 32 by the lower surface of the outer circumference of the log gripped by the spindle 25.
S is energized and outputs a log detection signal, and the lifting mechanism 3
1 stops rising, the left and right spindles simultaneously retreat and separate from the log end face, stop at the retreat limit and issue a stop signal, and the log is placed on the pedestal 32 of the log receiving and unloading device. .

Next, in response to a stop signal from the spindle, the elevating mechanism 31 loads the raw wood and descends in the direction of arrow G, and when passing the carry-out conveyor 40 before the lowering limit, the left and right ends of the raw wood are received by the conveyor and placed on the pedestal. 32 onto the conveyor and further transferred by the conveyor to the outside of the veneer lace machine in the direction of arrow W, while the log receiving and unloading device stops at a predetermined position.

50 is a live roller in which a plurality of drum-shaped rollers 50R are arranged in large numbers in the axial direction of the logs intersecting with the front end side of the carrying-out conveyor 40, and the logs 1 continued from the carrying-out conveyor 40 are transferred in the axial direction thereof. 50S is a detection device such as a limit switch, which is located near the roller end of the drum-shaped roller 50R and slightly protrudes from the top surface of the conveyor near the tip side of the carry-out conveyor 40, and is biased by the tip edge of the raw wood being transferred by the conveyor for detection. arranged to give a signal.

The logs 1 transferred in the direction of arrow W by the carry-out conveyor 40 energize the detection device 50S near the tip of the conveyor to output a detection signal, and the live rollers 50 are driven, at the same time a swinging mechanism (not shown) of the carry-out conveyor 40 is activated. is activated and the conveyor tip side swings downward in the direction of arrow X. Therefore, the logs 1 on the conveyor are transferred to the live rollers and are carried away in the log axis direction perpendicular to the previous conveyance direction. Further, when the logs to be transferred pass the carry-out conveyor 40, the swinging mechanism is actuated upward in the direction of the arrow X by an appropriate detection device to return the conveyor to its original level. Note that the swinging mechanism of the carry-out conveyor 40 is omitted and the drum-shaped roller 5 of the live roller 50 is used.
A plurality of 0Rs may be raised and lowered simultaneously.

The roughly peeled veneer lace of the present invention detailed above is
The loss time from transporting the logs to centering, cutting, and transporting the logs is minimized, making it possible to perform rough lace stripping efficiently.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of one embodiment of the present invention. 1... Log, 3... Log diameter detection device, 4... Loading conveyor, 10... Log centering device, 11...
Log lifting mechanism, 12, 32... Log holder, 14...
...transfer trolley, 20...veneer lace, 21...
... Planer stand, 30 ... Log receiving and unloading device, 31 ... Lifting mechanism, 40 ... Carrying out conveyor, 50 ... Live roller.

Claims (1)

[Claims] 1. A veneer lace for cutting veneers by rotating logs, characterized by having the following configurations A to J. A It is installed in front of the log import side of the veneer lace.
A delivery conveyor that transports logs by installing a detection device at the end to detect when the logs have arrived. B Log diameter detection device that detects the outer diameter of logs being transported by the loading conveyor and transmits the information to the control device. C. A log lifting mechanism that is installed at the end of the carry-in conveyor, is configured to be able to move up and down by locking a log holder at the upper end, and lifts by controlling the amount of lift by a control device. D A running rail installed between the support frame erected in front of the log import side of the veneer lace and the top surface of the veneer lace. E A transport trolley that suspends a log clamping mechanism equipped with gripping claws that can slide freely in the axial direction of the log, is placed on a running rail, and moves back and forth from the log centering center to the veneer lace spindle center. F. A veneer lace that opens in the middle of the bed and is equipped with a plane stand and spindle that move toward or away from the log under the control of the veneer lace control panel. G. A log receiving and lowering device installed directly below the intermediate position between the left and right spindles of the veneer lace, which locks a log holder equipped with a log detection device on the top surface, and has an elevating mechanism that is controlled to raise and lower by a control device. H It is arranged perpendicularly to the axial direction of the logs held by the veneer race spindle, with the starting end facing down toward the conveyor side, and a detection device is installed on the tip side, and it can swing up and down about the shaft as a fulcrum. Configured unloading conveyor. I A live roller consisting of multiple rollers arranged in the axial direction of the logs, intersecting with the front end of the unloading conveyor. J A control device that receives a signal from the log diameter detection device and sends a signal to the veneer race control panel to control the travel of the transfer trolley, the unloading conveyor, and the operation of the live rollers.