JPS6237683Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a planer stand transfer device in a veneer race that can change the transfer speed of the planer stand without interrupting the transfer of the planer stand.

(Prior art) When cutting raw wood to obtain veneer using a veneer lace, the sapwood and core material of the raw wood are transferred at high speed against the steady rotation of the raw wood, so that the cutting thickness becomes thicker. On the other hand, after the log has reached a perfect circle, the transfer speed of the planer stand is changed so that the planer stand is moved at a low speed relative to the steady rotation of the log so that the cutting thickness becomes thinner.

Conventionally, in the above-mentioned planer stand transfer device for veneer lace, a clutch is used to connect a spindle shaft that rotates the log and a transfer mechanism, such as a screw shaft, that reciprocates the planer stand according to the rotational force of the spindle shaft. When changing the transfer speed of the planer head corresponding to the desired cutting thickness by connecting the machine through a speed change mechanism consisting of a mechanism and a multi-stage gear, etc., the clutch mechanism temporarily breaks the connection, and the speed change mechanism changes the speed to the desired transfer speed. After selecting, connect the spindle shaft and transfer mechanism again using the clutch mechanism,
The structure is such that the planer stand is transferred at a selected transfer speed, and when the transfer speed is selected, the transfer of the planer stand is temporarily stopped and cutting of the veneer is interrupted, which inevitably interrupts work in the subsequent process. This has the drawback of extremely poor workability, especially when the cutting process is directly connected to the veneer lace.

In addition, the thickness of the cut on the rear end of the veneer when the planer stand stopped moving, and the thickness of the cut on the front end of the veneer when cutting resumed, become uneven as shown in Figure 6. A portion of the material cannot be used as a veneer for plywood, resulting in a reduction in yield.

(Purpose) In view of the above-mentioned conventional drawbacks, the purpose of the present invention is to change the speed of transferring the planer stand to a speed that corresponds to the desired cutting thickness without interrupting the transfer of the planer stand, thereby improving work efficiency in veneer processing. It is an object of the present invention to provide a planer stand transfer device for veneer lace, which can improve the performance.

(Example) The present invention will be described below with reference to Examples.

FIG. 1 is a schematic side view showing an outline of a planer stand transfer device for a veneer lace according to the present invention. A first rotating member 5 that rotates at a low speed, a second rotating member 6 that rotates at a high speed, and the veneer race 2 can be moved back and forth on the main body frame 2a, which are respectively attached via gears, clutches, etc. (not shown). A planer stand 8 is attached to a cutting blade 7 that presses against the outer periphery of the raw wood 3 to cut the raw wood 3, and a planer stand 8 is attached to the planer stand 8 so as to be screwable, and the planer stand 8 is moved according to the rotation of the planer stand 8. a screw shaft 9 as a transfer mechanism;
a fixed flange 10a integrally formed on the rear end side of the screw shaft 9; and a fixed flange 10a that is rotatably attached to the screw shaft 9 opposite to the fixed flange 10a;
a clutch mechanism 10 consisting of a movable flange 10b connected to the second rotating member 6; an overrunning clutch mechanism 11 attached to the rear end of the screw shaft 9 and connected to the first rotating member 5; It consists of

In addition, 12a and 12b in the figure are bearings of the screw shaft 9, and the overrunning clutch mechanism 11 connects the screw shaft 9 and the first rotating member 5 in the low speed rotation region, and conversely, in the high speed rotation region. It has an integral function of breaking the connection between the screw shaft 9 and the first rotating member 5, and its configuration is well known, so a detailed explanation thereof will be omitted.

Next, the operation of this embodiment will be explained.

As the spindle shaft 4 rotates, the log 3 is rotated at a predetermined rotational speed, and the rotational force of the spindle shaft 4 is transmitted to the first and second rotating members via gears, clutches (not shown), etc. Granted to 5,6,
The first rotating member 5 is rotated at low speed, and the second rotating member 6 is rotated at high speed.

In the above state, first, in order to cut the sapwood of the log 3, the movable flange 10b, which is connected to the second rotating member 6 and freely rotates around the screw shaft 9, is brought into pressure contact with the fixed flange 10a. The rotational force of the rotating member 6 is applied to the screw shaft 9, causing the screw shaft 9 to rotate at high speed. Due to the high-speed rotation of the screw shaft 9, the planer stand 8 can cut the veneer S to a thickness _{of 1.}
It is transported at high speed so that it becomes thick.

When the log 3 is cut into a perfect circle by the above operation, if the screw shaft 9 and the second rotating member 6 are disconnected by the clutch mechanism 10, the screw shaft is cut by the action of the overrunning clutch mechanism 11. 9 and the first rotating member 5 are immediately connected, and the screw shaft 9 is rotated at a low speed.

Due to the low speed rotation of the screw shaft 9, the plane head 8 is transferred at a low speed so that the cutting thickness ₂ of the veneer becomes thinner.
(See Figure 2A) Furthermore, when the core material is reached as the cutting of the log 3 progresses, the clutch mechanism 10 is activated at the same time as the sapwood is being cut.
When the second rotating member 6 and screw shaft 9 are connected, the screw shaft 9 is rotated at high speed, and the overrunning clutch mechanism 11 is rotated at high speed.
Due to the action of
Transferred at high speed so that l ¹ becomes thicker. (See Figure 2B) Therefore, in this embodiment, the transfer speed of the planer stand 8 can be changed to high speed or slow speed without interrupting the transfer of the planer stand 8, and uneven parts are reduced compared to the conventional method. In this state, it is possible to obtain a veneer with a desired cutting thickness.

In this embodiment, the first and second rotating members 5 and 6 are configured to be rotated at low speed or high speed by the rotational force of the spindle shaft 4, but independent driving members that are independent of the rotation of the spindle shaft 4 are used. The height of the first and second rotating members is increased. Even if the configuration is configured to rotate at a low speed, as shown in FIG. The rotating members 13 are connected to the screw shaft 9 via clutch mechanisms 10', and the transfer speed of the planer head is adjusted so that a veneer with a desired cutting thickness can be obtained in at least three stages by connecting and cutting the respective clutch mechanisms. It is also possible to implement a configuration that changes the .

Furthermore, although the transfer mechanism of the present embodiment is constructed with a screw shaft 9, a rack gear 14 is attached to the planer stand 8 as shown in FIG.
The first rotating member 5 is connected to the overrunning mechanism 1
1, and via the pinion gear 15, and the second
The rotating members 6 are respectively attached via the clutch mechanism 10 and the pinion gear 16, and the plane stand 8 is raised to a high position. The present invention can be implemented as long as the rotational motion of the rotary member can be converted into the reciprocating motion of the planer stand so that the rotary member can be variably transferred at a low speed.

Further, the present invention can be practiced even if the first rotating member 5 and the overrunning clutch mechanism 11 and the second rotating member 6 and the clutch mechanism 10 are arranged as shown in FIG.

(Effect) As explained above, the present invention has the configuration described in the claims for utility model registration, so that when changing the transfer speed of the planer stand, the transfer speed can be adjusted to the desired speed without interrupting the transfer of the planer stand. It has a great practical effect as a planer stand transfer device for veneer lace, which can change the speed to match the cutting width and improve workability and yield.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing the outline of the planer stand transfer device according to the present invention, Figs. 2 A and B are explanatory diagrams showing the cutting state of the veneer S, and Figs. 3 to 5 are the present invention. FIG. 6 is a schematic side view showing a modified embodiment of the present invention, and FIG. 6 is an explanatory diagram showing a state in which a veneer is cut by a conventional planer stand transfer device. In the figure, 1 is the plane transfer device, 2 is the veneer lace, and 3
5 and 6 are logs, 5 and 6 are rotating members, 8 is a planer stand, 9 is a screw shaft as a transfer mechanism, 10 is a clutch mechanism, and 11 is an overrunning clutch mechanism.

Claims (1)

[Claim for Utility Model Registration] In order to cope with the cutting thickness of various types of veneer lace, it is equipped with a plurality of rotating members that rotate at different speeds, and an overrunning clutch is installed in the transfer mechanism that transfers the veneer lace planer stand. The rotary member rotating at the slowest speed among the rotary members is connected through a mechanism, and the other rotary members are connected to the transfer mechanism through a clutch mechanism, so that the transfer speed of the planer stand can be adjusted steplessly. A planer stand transfer device for veneer lace, characterized in that it is configured so that it can be changed to.