JPS6118970Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a device (hereinafter referred to as rotary lace) for manufacturing veneer for plywood production by continuously scraping logs. Conventionally, the rotary race rotates the log while holding the center of the log with a pair of spindles, and moves a planer table with a knife on a slide using the rotational force of a drive screw to touch the outer circumference of the log and strike a predetermined position. The veneer of a predetermined thickness is continuously scraped by moving forward in increments of distance, and the knife approaches the spindle until just before it touches it, trying to obtain as much veneer as possible. At the point when the warp is almost equal to the warp, the drive screw of the planer stand is rotated in the opposite direction, the space between the spindles is widened, and the stripped core of the log is dropped onto the dirt floor.Then, the new log is held by the spindle again, and the drive screw is turned. While rotating in the forward direction, the planer table is brought closer to the log again and the process of scraping is repeated.

However, in recent years, the quality of raw wood logs has deteriorated, with some being about 2/3 to 1/2 the diameter of conventional logs, or extremely hard and knotty, resulting in fewer logs being attached to the spindle. has increased, and the amount of veneer sheared per day and per hour has decreased.

Therefore, in the present invention, we investigated and completed a rotary lace configuration that does not reduce production volume (production efficiency) even when logs are frequently replaced.
In other words, the rotary race of this invention is a slide 1.
In a rotary race having a structure in which a planer table 2 is slidably installed on the top and moves by the rotational force of a drive screw 3, the planer table 2 is fitted with the drive screw 3,
It relates to a rotary race that can be freely separated and that the planer table 2 can be moved by a drive device 4 other than the drive screw 3. The long screw that drives the table and the planer table that fits into the long screw are configured so that they can be engaged and separated, and the planer table can be moved at high speed by a method that does not depend solely on the drive of the long screw. It is to do so. Hereinafter, the present invention will be described in detail with reference to drawings showing embodiments.

In the embodiment shown in FIGS. 1 and 2, a planer table 2 including a blade table 5 is placed on the top of a slide table 1 in a slidable manner, and the planer table 2 is fitted with a long drive screw 3. A screw is cut in the plane, and the planer table 2 moves back and forth on the slide table 1 as the drive screw 3 rotates. On the other hand, a small hole 6 is provided in the fitting part where the planer table 2 and the drive screw 3 fit together, and a pin 7 having a size that matches the screw pitch of the drive screw 3 is installed inside the small hole 6. 7 is configured to be engaged with and separated from the thread of the drive screw 3 by hydraulic pressure, air pressure, magnetic force, or the like. On the other hand, the planer stand 2 including the blade stand 5 is connected at its end to a drive device 4 having an arm 8 that rapidly expands and contracts by hydraulic pressure, air, magnetic force, or the like.

Next, the process of scraping a log using the rotary race of the embodiment of the present invention will be described. First, the center of the log 10 is held by the spindle 9.

Next, the pin 7 connecting the slide 1 and the drive screw 3 is separated from the drive screw 3.

Subsequently, the drive device 4 having an extendable arm 8 is activated to approach the surface of the log 10 and then stopped.

Next, the slide 1 and the driving screw 3 are connected by operating the pin 7, and at the same time, the arm 8 of the driving device 4 having a telescopic arm 8 is made free to move.

Then, as in the conventional method, the drive screw 3 is rotated and the planer table 2 is pressed against the surface of the log 10 at a predetermined speed while the log 10 is cut to just before the spindle 9 to obtain a veneer.

Next, the pin 7 is separated from between the screw pitches of the drive screw 3, and the arm 8 of the telescopic drive device 4 is
to quickly move the planer table 2 to the spindle 9.
Pull away from near.

By repeating the above steps, the log cutting work is performed, and the time during which the planer table moves only by the rotational force of the drive screw is shortened by the extension and contraction of the arm, thereby improving the log cutting efficiency.

In addition, as a fitting mechanism between the drive screw 3 that moves the planer table 2 and the planer table 2, as shown in Fig. 3, a part of the drive screw 3 is joined from the periphery by force such as hydraulic pressure, pneumatic pressure, or magnetic force. It is also possible to use a fitting device 1 that operates in such a way as to separate or separate.

As described above, the rotary lace of the present invention can move the planer stand including the blade stand more rapidly than the conventional drive screw, which reduces the time required to replace logs compared to the conventional method. It can greatly improve veneer cutting efficiency.

[Brief explanation of the drawing]

FIG. 1 is an explanatory side view showing a rotary race according to an embodiment of the present invention, and FIG. 2 is an explanatory enlarged sectional view taken along the line A-A showing a part of the connection between the drive screw and the planer stand of the embodiment. FIG. 3 is an enlarged cross-sectional explanatory view showing a part of the connection between the drive screw and the planer table according to another embodiment of the present invention. 1... Slide table, 2... Planer stand, 3... Drive screw, 4... Hydraulic cylinder, 5... Blade stand, 6...
...Small hole, 7...Pin, 8...Arm, 9...Spindle, 10...Log, 11...Fitting device.

Claims (1)

[Scope of utility model registration request] In a rotary race of a structure in which a planer table 2 is slidably installed on a slide table 1 and moves by the rotational force of a drive screw 3, the planer table 2 can freely engage and separate from the drive screw 3, and the planer table A rotary race characterized in that 2 is moved by a drive device 4 other than a drive screw 3.