JPS6334882Y2 - - Google Patents

Description

[Detailed description of the invention] This invention uses a spindle to hold and rotate the left and right butt ends of raw log raw materials, and a long blade that spans the entire length of the log is cut into the outer circumferential surface of the log to form a wide thin sheet. A planer stand equipped with a veneer cutting blade is rapidly brought close to the log loaded with a veneer race to produce a veneer veneer, or after cutting is completed, the planer stand is rapidly retreated in preparation for loading a new log. This relates to a feeding device for a planer stand, etc.

Conventionally, the main structure of veneer lace for cutting veneers from logs is a spindle that holds the left and right butt ends of the log, and a motor such as a DC motor or thyristor Leonard system that rotates this spindle. A planer stand equipped with a planer stand, a pressure bar body to which a pressure bar body is attached, a planer stand guide that integrally holds the left and right end surfaces of the planer stand and the pressure bar body; A gear box that has a feed screw that moves forward or backward, and that also determines the various amounts of advance of the planer head for one revolution of the spindle (corresponding to one revolution of the raw wood), that is, the step feed that determines the thickness of the cut veneer, or Equipped with a DC variable speed electric motor in place of the gearbox,
In response to changes in the thickness of the veneer to be cut, the gear box or the DC variable speed electric motor for step feed was operated to feed the planer head to the required level, thereby cutting the veneer.

On the other hand, after loading logs onto the spindle, the planer stand is brought closer to the log as quickly as possible, or after one log has been cut, the planer stand is quickly separated from the spindle in preparation for bringing in the next log. It is equipped with an electric motor for rapid feed of the planer head, and a clutch is interposed between the step feed gear box or the step feed transmission device such as a DC variable speed motor, and the step feed is transmitted to the feed screw as necessary, Alternatively, the planer stand could be moved forward or backward by fast forwarding. The reality of these operations is that after loading the log into the spindle, some people want to start cutting the veneer too quickly and crash the planer stand into the log, and others have to use a slow-rotating electric motor to ensure safety when moving rapidly forward. As a result, it took a long time to retreat the planer board after cutting, and the loading of logs was delayed.The present invention solves the above problems by using a pole-changing electric motor etc. for rapid forwarding of the planer board. It is resolved.

An embodiment of the present invention will be described below with reference to the drawings.
Figure 1 shows the planer stand relationship in a side view, and the rest is for explanation.
FIG. 2 is a feed system diagram of a planer stand showing a transmission device in a plan view.

Reference numeral 1 denotes a log serving as a raw material to be cut, and its left and right end surfaces are held between a spindle 3, and the spindle is equipped with a main electric motor 1 that can change speed, such as a thyristor Leonard system.
1 is rotated in the direction of arrow A; 20 is a plane stand; a cutting blade 21 is attached to its upper tip; 30 is a pressure bar body; usually placed above the plane stand 20; A pressure bar 31 is installed in the section, and its left and right end surfaces are integrally held together with the planer stand 20 by a planer stand guide 25, and are moved forward in the direction of arrow B, that is, with respect to the log 1, by a feed screw 22 loaded in the planer stand guide 25. 27 is a lower moving guide that supports a rolling roller 20' provided at the lower part of the planer stand 20. 23 is a feed screw 2.
For example, a chain wheel 40C is mounted on the counter shaft 40 with a key or the like on the counter shaft 40 which meshes with the bevel gear 24 mounted on the counter shaft 40. Power is transmitted by a chain or the like in the direction of arrow D from a chain wheel 44C mounted on the shaft 44, and the feed screw 22, bevel gears 23, 24,
The feed common shaft 44 up to the counter shaft 40 is normally arranged on left and right frames arranged on the left and right sides with the raw wood in between, and is supported by each frame.
It is arranged across the left and right frames, and a chain wheel 44C is mounted by a key or the like at a position corresponding to the chain wheel 40C of the counter shaft.

Reference numeral 50 denotes a step-feeding drive device composed of a DC variable speed electric motor, etc., and a clutch mechanism 53 composed of a pawl clutch etc. is used to drive rotation controlled according to the thickness of the cut veneer by means of a chain wheel 50C pivotally attached to the electric motor. Then, it is transmitted to the feed common shaft 44 in the direction of arrow C. As the walking drive device, a so-called gearbox which receives rotation from a conventional spindle 3 for driving the log 1 and outputs a large number of rotations for the walking movement may be used.

Reference numeral 51 denotes a chain wheel that transmits the rotation of the chain wheel 50C of the drive device 50, and a feed common shaft 44.
The clutch mechanism 53 is rotatably mounted on a shaft and has a clutch pawl on one side, and by attaching and detaching the clutch mechanism 53, the required rotation is transmitted to the feed common shaft 44 as necessary. A pawl clutch or the like is used which is slidably mounted in the axial direction by a key or the like, and rotational force is appropriately transmitted to the feed common shaft 44 by engagement of clutch pawls arranged on the end faces of the pawl clutch.

Reference numeral 60 denotes a fast-forward drive device, which generally employs a pole-change motor; in short, any drive device that can change speed significantly in a short period of time may be used.

Reference numeral 60C is a chain wheel mounted on the output shaft of the rapid traverse drive device. Reference numeral 61 is a chain wheel rotatably mounted on the common feed shaft corresponding to the chain wheel 60C. To explain the embodiment of the above-mentioned device, which transmits rapid rotation to the feed screw 22, during the step feed while cutting a veneer from raw wood, the feed drive of a variable speed electric motor or gear box controlled to the required rotation is used. The feed common shaft 44 is driven from the output shaft of the device 50 in the direction of arrow C through the chain wheel 50C, the chain wheel 51, and the clutch mechanism 53.
Next, the chain wheel 40C, which is pivoted on the counter shaft 40 in the direction of arrow D, is rotated from the chain wheel 44C that is coaxially mounted, and the bevel gear 24,
23, the feed screw 22 is driven at the required rotation speed. During this time, the rapid feed drive device 60 is stopped, and the clutch mechanism 53 and chain wheel 61 are separated, so that the above-mentioned step feed is not affected.

Next, regarding rapid forwarding, when the rapid forwarding drive device 60 is activated, the common shaft 44 is fed from the chain wheel 60C pivotally attached to the output shaft of the driving device in the direction of the arrow E.
A clutch mechanism 53 drives a chain wheel 61 that is rotatably mounted on the shaft.
The rotational drive is transmitted to the common shaft 44 through engagement with the rotary drive screw 22, following the same path as the rotational drive transmission path during step feed, and rotates the feed screw 22 to rapidly advance or retract the planer head.The important thing here is that For example, if a 2-pole or 4-pole convertible motor is used for the fast-forwarding drive device 60, the 4-pole motor approaches the log at a relatively low speed when starting veneer lace work, and the When retreating after finishing, the two poles are rotated on the high-speed side to rapidly retreat.In addition, a log diameter detection device that outputs a signal corresponding to the diameter of the log is installed, so that even during the forward movement of the planer stand, the machine can move forward at high speed up to a certain distance. It is also possible to automatically switch to a low speed and move forward after reaching a predetermined position, and then to move backward only at high speed when reversing.

As a result of the above, it is safe to approach the planer stand to the raw wood at the beginning of the work, and it is also possible to retreat the planer stand extremely efficiently after cutting is completed. Furthermore, the clutch mechanism 5
3 may be replaced by another device such as an electromagnetic friction clutch other than a pawl clutch, or the fast-forward drive device may be replaced with a two-speed gearbox, etc., or a variable-speed electric motor may be used to rotate at low speed for forward movement towards logs and for reverse movement. Alternatively, a method such as changing the speed to high speed rotation may be used.

[Brief explanation of drawings]

FIG. 1 is a feed transmission system diagram of the planer stand. 1... Log, 3... Spindle, 11... Main electric motor, 20... Planer stand, 21... Cutting knife, 22...
...Feed screw, 23, 24...Bevel gear, 30...
... Pressure bar body, 31 ... Pressure bar, 40 ... Counter shaft, 44 ... Common feed shaft, 50 ... Step feed drive device, 51 ... Chain wheel, 53 ... Clutch mechanism, 60 ... Rapid feed drive device , 61...Chain wheel.

Claims (1)

[Claims for Utility Model Registration] 1. In a veneer race that cuts a veneer while holding and rotating raw wood, a planer stand equipped with a cutting tool and a pressure bar body equipped with a pressure bar are integrally advanced toward the raw wood, or A step feed drive device is provided with a feed screw for retracting and rotates according to the required thickness of the veneer to be cut, and a rapid feed drive device that can change speed is provided, and the rotation of the step feed or rapid feed is selectively transmitted to the feed screw. A feeding device for a planer stand in veneer lace, characterized by being equipped with a clutch mechanism. 2. A feeding device for a planer stand in a veneer lace according to claim 1 of the utility model registration, characterized in that the fast-feeding drive device is constituted by a pole number changing electric motor. 3. A feeding device for a planer stand in a veneer lace according to claim 1 or 2 of the utility model registration claim, wherein the stepping driving device is constituted by a DC variable speed electric motor.