JPH02231102A - Method and device for centering log - Google Patents

Abstract

PURPOSE:To center highly efficiently, by a method wherein both end parts of a log are supported with a recessed part of a supporting device, the centering is performed by turning the supporting device on the basis of a centering mark line, the supporting device is turned by 90 degrees and moved laterally on the basis of the centering mark line. CONSTITUTION:A log 25 is fed to a pair of a front and rear supporting devices 1, 1 of a centering device one by one by a carrying-in conveyor 23, holding devices 12, 12 are turned through lowering with a contracting action of hydraulic cylinders 14, 14, both end parts of a log is held with the supporting device 1 and holding device 12 and hydraulic cylinders 5, 5 are inched while viewing the log 25 and a centering mark line (x) from the upper part. With this construction, since the supporting devices 1, 1 turn to the right and left centering around a supporting shaft 3, centering can be performed under a stabilized state and through only a lateral movement. When contracting action of air cylinders 6, 6 is performed, the supporting members 1, 1 and holding devices 12, 12 are suspended by turning by 90 degrees under a holding state of the log 25. The log 25 is registered to a mark line (y) by actuating hydraulic cylinders 15, 15 while making a comparison between the log 25 and centering mark line (y).

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a centering method and apparatus for sawing logs into pillar materials. (Example) Prior Art Conventionally, as a centering method and device for sawing logs into pillar materials, it has already been known to center the logs by moving them vertically and horizontally with reference to the centering mark line. There is.

(C) Problems to be Solved by the Invention The log centering method and apparatus described above center the log by visually observing the horizontal deviation of the log from above and from the side centering mark lines, and also center the log from the side. The centering was performed by comparing the centering line and the centering mark line, but after centering one of them, the centering of the tip may become incorrect while centering the other, especially when visually inspected from the side. It is difficult to perform accurate centering unless the eye position is at the same height as the log when centering with There were problems such as a longer adjustment time.

(2) Means for solving the problem This invention first sets the direction of the surface to be sawn in the Y direction, and cuts the log at 90 degrees.
When the direction of the surface to be sawn by rotation is set to the X direction, hold both ends of the log in the recesses of the support means, visually compare the log and the centering mark line from above, and remove the support means. Rotate to perform centering in the X direction, and after centering in the X direction,
Centering the log in the Y direction is performed by rotating the log 90 degrees together with the support means while holding it in the support means, and then moving the support means laterally while visually comparing the log and the centering mark line from above. The above-mentioned problems have been resolved. (e) Operation: Supply one log to the support member and support it, turn the log if necessary and then grip it with the gripper, and adjust the horizontal movement of one or both of the support means. When the log is aligned with the mark line, centering in the X direction is completed. Next, while maintaining the gripping state, the support means is rotated 90 degrees around its base, and in this state, the log is aligned with the mark line by adjusting the support means laterally, and centering in the Y direction is completed. Therefore, we moved to the sawmill line, attached it to the book gripping device on the cart, and sawed the two sides in the Y direction, which is the first sawing process. Rotate to saw two sides in the X direction.

(F) Embodiment An embodiment of the present invention will be explained with reference to the drawings. In FIGS. 1 and 2, the support means l is mounted on a frame 2 that moves laterally on the machine frame A, and is rotatable on a support shaft 3. One end of the arm 4 is rotatably supported on the support shaft 3, which is connected via a hydraulic cylinder 5, and the arm 4 is connected via an air cylinder 6. and is connected to the pedestal 2.

A chain 10.10 for this time is stretched in a V-shape between the pair of drive sprockets 7.7 attached to the support shaft 3 and the idling sprockets 8.8 on each upper part of the support means 1, respectively. The lO is rotated in forward and reverse directions by a motor 11 attached to the end of the support shaft 3. Further, the base of an arm-shaped gripping tool 12 is attached to the shaft 8a of the free rotating subrocket 8 at the rising part of the support stage 1 on the sawmill side.
, and this shaft 8a is connected to a gear 9a. 9b, axis 13. The rod of an air cylinder 15 is connected to the hydraulic cylinder 14 fixed to the arm 4 via an arm 13a protruding from the shaft 13, and the base of the air cylinder 15 is connected to the frame 2. A pin 16a is interlockingly connected to the tip of a swinging arm 16 which is pivotally supported by the mount 16, and the swinging arm 16 is swung laterally by an air cylinder 17 to cause the pedestal 2 to reciprocate in the lateral direction. The above-mentioned centering device includes a laser marker 18 for forming a centering mark line X in the
A laser marker 19 is provided to form a centering mark line y in the Y direction, and a pair of circular saws 20 are provided on the side of the centering device to saw both sides of the log, as shown in FIG. 2
A lumber machine 22 is provided, which consists of a sawmill 0 and a cart 21 which is equipped with a wood gripping means and moves back and forth. Next, the centering method using the centering device will be explained.
First, the logs 25 are transferred one by one by the carrying-in conveyor 23 to a pair of supporting means 1. 1, and if the posture of the log is good, the gripping tool 1 is moved by the reduction operation of the hydraulic cylinder 14.14 attached to each support means 1.1.
2.12 is rotated downward to grip both ends of the log with the support means 1 and the gripping tool 12, and while visually checking the log 25 and the centering mark line X from above, press the hydraulic cylinder 5.5.
When the support means 1.1 is moved by an inch, the support means 1.1 rotates left and right about the support shaft 3, so that centering can be performed in a stable state only by lateral movement.

Next, when the air cylinders 6.6 are respectively operated to contract, the support member 1.1 and the gripping tool 12.12 rotate 90 degrees and stop, as shown by the chain lines in FIG. 4, while gripping the rotor 25. ．． Thereafter, while comparing the log 25 and the centering mark line y, the hydraulic cylinder 15.15 is operated to align the log 25 with the centering mark line y.

With the above operations, centering is completed, and the front and rear air cylinders 17.17 are operated to reduce the size, and the support means 1.1, which grips the rotor 25, is moved together with the mount 2 onto the cart 2l of the lumber machine 22 on the right side. Then, the rotor 25 is attached to a wood gripping device 3l that can rotate both ends of the log 25 by 90 degrees around an axis 34 parallel to its length. After this installation is completed, the air cylinder 17, hydraulic cylinder 5, etc. are operated in the reverse order to the above to return to the receiving position shown in FIG. After that, in the first step, 2 points in the Y direction of Kuta 25 as before.
The surface is sawn, and in the second step, the drum material is rotated 90 degrees and two surfaces in the X direction are sawed.

(g) Effects of the Invention Since the present invention is configured as described above, both the centering of the log 25 in the X direction and the centering in the Y direction, and the amount of deviation of the log from the mark line can be accurately and easily visually checked from above. Centering can be performed by rotating the machine while moving, eliminating the need for multiple adjustment operations as in the conventional method, allowing for highly efficient centering. In addition, since the initially centered piece of wood is gripped, turned 90 degrees, and held in that state for the next centering, the first centering result will not be distorted during the next centering operation, making it more accurate. It is possible to perform accurate centering.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view of the centering device, Fig. 2 is a side view of the same, Fig. 3 is a perspective view showing the centering process, and Fig. 4 is a perspective view showing the centering process. FIG. 5 is a front view of the gripping device. 1. Support means, 2. Frame, 3. Support shaft, 4. Arm, 5.14. Hydraulic cylinder, 6. 15.17・
・Air cylinder, 12... Gripping tool, 16... Swinging arm, 22... Sawmilling device

Claims (2)

[Claims] (1) Both ends of the log 25 are supported by the recesses of the support means 1, the support means 1 is rotated based on the centering mark line to perform centering, and then the log 25 is gripped by the support means 1. The method for centering a log is characterized in that the support means 1 is rotated 90 degrees in this state, and then the support means 1 is moved laterally based on the centering mark line to perform centering. (2) The supporting means 1 having the grippers 12 at intervals capable of supporting the log 25 are arranged so that the supported wood can rotate and
A log centering device characterized in that the log centering device is pivotally supported on a pedestal 2 so as to rotate by 0 degrees, and the pedestal 2 is adjustable in lateral movement.