JPH0750161Y2 - Power transmission mechanism of automatic planer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an automatic planer board having a simplified drive system.

[Conventional technology]

The drive system of the conventional automatic planer has a structure as described in Japanese Patent Publication No. 62-25481.

That is, a pulley is fixed to the shaft end of the motor, the rotation of the motor shaft is transmitted to the cutter block by a belt, and a reduction gear is connected further before the pulley of the motor shaft to rotate the output shaft by a chain. It is transmitted to the feed roller of the processed material.

[Problems to be solved by the device]

However, in the drive system of the above-mentioned conventional automatic planer, the speed reducer must be attached to the end of the motor, so that there is a problem that the planer itself becomes large.

There is also a problem that another transmission device such as a chain is required to transmit the output of the speed reducer to the feed roller.

The present invention aims to solve such problems and to simplify the structure of the planer.

[Means for Solving the Problems]

In order to achieve such an object, the present invention provides an automatic planer for rotating a cutter block for cutting a workpiece and a feed roller arranged in front of and behind the cutter block for feeding the workpiece in one direction. In the power transmission mechanism, a winding medium node wound between the output shaft of the drive source of the automatic planer and the cutter block, and interposed between the cutter block and one of the feed rollers. The configuration includes a reduction gear train, a gear case that encloses the reduction gear train, and a winding medium node wound between the one feed roller and the other feed roller.

[Action]

The cutter block is rotated by the rotation of the output shaft of the power source being transmitted by the winding mediator.

The rotation of the output shaft is decelerated by the deceleration gear train in the gear case and transmitted to one of the feed rollers.

The rotation of the feed roller is transmitted to the other feed roller by the winding medium.

In this way, since the rotation of the cutter block is transmitted to the feed roller via the reduction gear train, the power transmission device and the reduction gear, which are conventionally separate bodies, can be integrated, and the structure of the planer can be simplified. It is also advantageous in terms of maintenance.

〔Example〕

Hereinafter, preferred embodiments of an automatic planer according to the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, a hole 5 through which the work material A passes is penetrated in the front-rear direction at the center of the frame of the automatic planer.

A cutter block 6 for cutting the work material A is vertically provided in the right standing portion of the frame, and feed rollers 7a and 7b for feeding the work material A in one direction are arranged before and after the cutter block 6, and the left standing portion is provided. A movable surface plate 8 is installed in the part.

Further, on the movable surface plate 8, pressure rollers 9a, 9b sandwiching the work material A together with the feed rollers 7a, 7b are arranged so as to face the feed rollers 7a, 7b, and the pressure rollers 9a, 9b are fed to the feed roller 8a. ,
A biasing device for biasing toward 8b is provided.

Further, a feed mechanism for moving the movable platen 8 toward and away from the cutter block 6 and a drive mechanism for rotating the cutter block 6 are provided in the lower portion of the frame.

Next, each section will be described in more detail.

Frame The frame has the hole 5 in the center of the work piece A as described above.
It has a rectangular tubular shape that is generally laid down because it has a base 13, as shown in FIG. 1 and FIG.
Horizontal guide plates 10a and 10b for supporting the work material A extending in the front-rear direction are respectively connected to the front and rear portions of the.
Further, between the guide plates 10a and 10b, the feed roller 3 for the work material A is
8a, 38b and a cradle 39 are provided.

The right standing portion rising from the right side of the base 13 has a main body portion constituted by a roller block 11 which also serves as a case for the cutter block 6 and the feed rollers 7a, 7b. The roller case 11 is bolted to the base 13. In addition, a storage space for the cutter block 6 is formed in the central portion of the workpiece passing hole 5 side. further,
A motor 22 (FIG. 5) for driving the cutter block 6 and the like, a dust cover (not shown) for receiving cutting waste by the cutter block 6 and the like are fixed on the side opposite to the workpiece passing hole 5. And the right cover 12 to cover these
Is attached.

A left standing portion rising from the left side of the lower portion is formed by a left cover 14 detachably connected to the base 13.

The upper portions of the left and right standing portions are connected by an upper cover 15 which is an upper portion of the frame.

Cutter block, feed roller and driving mechanism for these cutter block 6 is for cutting the work material A passing through the hole 5 of the frame, and is vertically installed in the roller case 11 of the frame, and as shown in FIG. It is pivotally supported by the roller case 11 via 16, 16. Although not shown, the cutter block 6 includes a cylindrical block body and two planer blades that are removably embedded in the block body by a cutter holder.

Before and after the cutter block 6, feed rollers 7a, 7b for feeding the work material A backward are provided on the shaft 6a of the cutter block 6.
It is arranged vertically in parallel with. Each feed roller 7a, 7b
Is the roller case of the frame, as shown in FIG.
It is attached to each of 11 through corner metal 17,17,17,17. Each square metal 17,17,17,17 is inserted into a square hole 18,18,18,18 formed laterally in the roller case 11, and is biased from behind by a compression coil spring 19,19,19,19. , Screw 20 to the roller case 11 so as to close each square hole 18,18,18,18…
It is pressed against the roughly U-shaped holding plates 21, 21, 21, 21 that are fixed by.

As a result, the feed rollers 7a and 7b are elastically held with respect to the frame and come into contact with the surface of the work material A passing through the hole 5 of the frame with an appropriate pressure.

The square metal 17 is located in the upper and lower parts of the frame and does not contact the work material A. Further, although not shown, an intermediate portion of the feed rollers 7a and 7b is inserted into a groove formed in the roller case 11.

The cutter block 6 and the feed rollers 7a and 7b are
It is adapted to rotate by a drive mechanism as shown in FIGS.

That is, the rotation is transmitted from the small pulley 23 fixed to the output shaft of the motor 22 to the large pulley 24 attached to the lower end of the shaft 6a of the cutter block 6 by the endless belt 25, and the rotation of the shaft 6a of the cutter block 6 is performed. Is transmitted to the shaft of one feed roller 7b by the reduction gear train 26, and further the rotation of the shaft of this feed roller 7b is transmitted to the shaft of the other feed roller 7a by the sprocket wheels 27, 27 and the chain 28. Has become. Reference numeral 40 is a tension vehicle.

The reduction gear train 26 includes small gears 41a, 41c, 41e and large gears 41b, 41e.
It is constituted by alternately combining d and 41f, and the rotation speed for cutting of the cutter block 6 is reduced to the rotation speed for feeding the work material A to rotate the feed rollers 7a, 7b. Further, the gear train 26 is wrapped in a gear case 29, and the whole thereof is stored in the lower portion of the frame.

The gear case 29 is pivotally attached to the lower end of the shaft 6a of the cutter block 6, and is held by the lower end of the shaft of the one feed roller 7b to prevent rotation. Therefore, even if the feed roller 7b appears and disappears from the surface plate surface during feeding, the gear case 29 follows the movement of the feed roller 7b.

The number of teeth of the sprocket wheels 27, 27 fixed to the shafts of the feed rollers 7a, 7b is the same, and both feed rollers 7a, 7b
Rotate in the same direction and at the same rotation speed.

Movable surface plate and its feed mechanism The movable surface plate 8 together with the feed rollers 7a and 7b is a work material A.
Is vertically placed on the side of the left upright portion of the frame, and is engaged with horizontal feed screws 30, 30, 30, 30 at the four corners thereof.

The feed screws 30, 30, 30, 30 are supported so that only the left cover 14 of the frame and the roller case 11 are allowed to rotate, and the sprocket wheel is installed in the left cover 14.
31,31,31,31 are stuck. Then, one endless chain 32 is wound between the sprocket wheels 31, 31, 31, 31 and one feed screw 31 is rotated by a handle 33.

Therefore, by rotating the handle 33, all feed screws
30,30,30,30 rotate in the same direction to move the movable platen 8 toward or away from the feed rollers 7a, 7b.

Pressing Roller and Pressing Device Therefor As shown in FIG. 3, the movable surface plate 8 is vertically mounted on the movable platen 8 so that the pressing rollers 9a and 9b sandwiching the workpiece A together with the feeding rollers 7a and 7b face the feeding rollers 7a and 7b. It is installed in.

The pressing rollers 9a, 9b are mounted on the movable surface plate 8 via a pressing device.

That is, at the shaft end of each pressing roller 9a, 9b, the square metal 34,34,3
4,34 are mounted, and each corner metal 34,34,34,34 is a movable surface plate 8
It is inserted in the square holes 35, 35, 35, 35 formed in the sideways.

Then, each square metal 34,34,34,34 is biased from behind by the compression coil springs 36,36,36,36, and the screw 20 is attached to the movable surface plate 8 so as to close the square holes 35,35,35,35. It is pressed against the holding plates 37, 37, 37, 37 that are bent and formed into a substantially U-shape that is fixed.

The pressing force of the compression coil springs 36, 36, 36, 36 is smaller than the pressing force of the compression coil springs 19, 19, 19, 19 of the feed rollers 7a, 7b.

Therefore, the pressing rollers 9a and 9b feed the work material A to the feed roller 7
The force pressing the a, 7b is lower than the pressing force by the feed rollers 7a, 7b, the pressing rollers 9a, 9b are submerged in the movable platen 8, and the work material A contacts the surface of the movable platen 8. .

The pressing device may be omitted, and the pressing rollers 9a and 9b may be attached to the movable surface plate 8 via simple ordinary bearings.

Next, a series of operations of the automatic planer will be described.

The handle 33 is turned to move the movable platen 8 according to the thickness of the work material A.

Next, when the motor 22 is started, the feed rollers 7a and 7b and the cutter block 6 are each rotated at a constant rotation speed, and the work material A is fed.

The work material A is automatically fed from the front to the rear of the automatic planer by the frictional force generated between the work A and the feed rollers 7a and 7b.

As a result, the work material A travels while contacting the surface of the movable platen 8, and the surface opposite to the movable platen 8 is cut by the cutter block 6.

In the above embodiment, the cutter block 6, the feed rollers 7a and 7b, the pressing rollers 9a and 9b, etc. may be placed horizontally.

Further, in the present embodiment, each interlocking mechanism is configured on the same end side, but it may be appropriately divided and arranged at both ends.

[Effect of device]

As described above, the drive mechanism of the automatic planer according to the present invention is configured to rotate the cutter block for cutting the workpiece and the automatic feed rollers arranged before and after the cutter block for feeding the workpiece in one direction. In the power transmission mechanism of the planer, a winding medium node wound between an output shaft of a drive source of the automatic planer and the cutter block, and an intermediary member between the cutter block and one of the feed rollers. Since the reduction gear train is mounted, the gear case envelops the reduction gear train, and the wrapping intermediate node wound between the one feed roller and the other feed roller, it is a separate body. By combining the power transmission device and the speed reducer into a single unit, the structure of the planer can be simplified, which is advantageous for maintenance.

Also, the gear case is pivotally attached to the shaft end of the cutter block,
The gear case can follow the movement of the feed roller if the shaft end of the one feed roller is held stationary. Therefore, smooth movement of the feed roller can be ensured.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 5 show an embodiment of an automatic planer according to the present invention, FIG. 1 is its front view, and FIG. 2 is a plan view with an upper cover removed. 3, FIG. 3 is a partial cutaway horizontal sectional view, FIG. 4 is a view showing a drive mechanism of a cutter block and a feed roller in the direction of arrows IV-IV in FIG. 2, and FIG. 5 is a bottom view of the drive mechanism. A: Work material, 6 ... Cutter block, 7a, 7b ...
Feed rollers, 8 ... movable surface plate, 9a, 9b ... pressure roller, 1
1 …… Roller case, 17 …… Square metal, 18 …… Square hole, 19
...... Compression coil spring, 21 …… Holding plate, 22 …… Motor, 26
...... Reduction gear train, 28 …… Chain.

Claims (2)

[Scope of utility model registration request] 1. A power transmission mechanism of an automatic planer for rotating a feed block arranged in front of and behind a cutter block for cutting the block and for feeding the block in one direction. Winding intermediate node wound between the output shaft of the drive source and the cutter block, a reduction gear train interposed between the cutter block and one of the feed rollers, and the reduction gear. A power transmission mechanism for an automatic planer, comprising a gear case enclosing a row and a winding medium node wound between the one feed roller and the other feed roller. 2. The power transmission of an automatic planer according to claim 1, wherein the gear case is pivotally attached to a shaft end of the cutter block and is held by a shaft of the one feed roller to prevent rotation. mechanism.