JPS6039206Y2 - bark stripping machine - Google Patents

Description

[Detailed description of the invention] The present invention is a bark stripping machine that uses a rotating cutter to peel off the bark while rotating a log. A device is installed in which the front tires running left and right and the rear tires are separated by a required distance from front to back, respectively, so that they can be tilted parallel to each other and from side to side. This invention relates to a bark peeling machine in which a rotary cutter for removing bark is mounted on an arm that moves up and down.

This type of bark stripping machine requires the front and rear tires to be tilted to the left or right and rotated at the same time.
Alternatively, the axle of each tire on the rear side can be connected to the front I long rotation axes via a chain and sprocket wheel, and the axle of each tire on the rear side can be connected to one long axis on the rear side via a belt and pulley, or a chain and sprocket wheel. It is known that the motor is connected to a long rotation axis, and the front and rear rotation axis are connected to a motor.

However, according to this, when a tire is tilted, the belt or chain is twisted, which prevents smooth transmission of rotation between the long axis of rotation and each tire, and causes excessive force to be applied to the belt and pulley, or the chain and sprocket wheel. In addition to this, the tire rotation is uneven, and unreasonable force is applied from the log to the slow-rotating tire, causing serious damage to the tire.In addition, the peeling skin between the belt and pulley or between the chain sprocket wheel is severe. Disadvantages include the fact that they must be cleaned frequently because the pieces become clogged, and it is very troublesome to change tires, belts, or chains.

In addition, in the conventional type, the arm on which the rotary cutter is pivoted is biased to rotate by a spring, thereby making it possible to press the rotary cutter against the upper side of the log. In order to hit a log, it is necessary to temporarily stop the transportation of the log and rotate the arm manually, which is a cumbersome task.Also, there is a drawback that the rotary cutter cannot be pressed against the log properly. .

The present invention proposes a bark stripping machine that does not have these various drawbacks, and its feature is that a telescopic shaft connects the axles of a plurality of front tires and the axles of a plurality of rear tires. The arm, which is connected via a drive shaft with universal joints at both ends and has a rotary cutter mounted on its axis, can be moved up and down by the expansion and contraction of the piston rod of the cylinder device, and the logs transported by tires can be moved up and down. A detection phototube is provided, and the cylinder device is controlled by the phototube.

The present invention will now be described in detail with reference to the illustrated embodiments.

The peeling machine in this column is a frame A made up of shaped materials.
Then, install the required number of tires (six in this example) on the front side.
・ and the same number of tires 2 on the rear side are mounted individually on the left and right, separated by the required distance, in parallel and facing each other in a 1:1 relationship front and rear, and perpendicular to the rear side of the frame A. A vertically movable frame B is vertically movably mounted between the left and right vertical rails 3.3, and a roughing parker C1 and a finishing barker C2 are arranged side by side on this vertically movable frame B. They are installed individually.

The front tire 2... and the rear tire 2... are individually mounted on the frame A in the same way, and as a representative, the mounting configuration of one front tire 1 is shown in the third figure. This will be explained with reference to Figures 7 to 7.

An inclined base plate 6 is fixed to the intersection of the longitudinal member 4 and the cross member 5 on the rear side of the frame A so as to be inclined at a predetermined angle (for example, approximately 45 degrees) with respect to the horizontal plane.

A rotating body 7 is pivotally mounted on the upper surface of the inclined base plate 6 and rotates about an inclined axis that is perpendicular to the upper surface and forms an angle of approximately 45 degrees with respect to the horizontal plane. It is mounted on a shaft at the tip (upper end).

That is, the rotating body 7 includes a substantially semicircular rotating plate 9 that is rotatably supported by a shaft 8 on the upper surface of the inclined base plate 6, and a support 10 that is erected at an eccentric position of the rotating plate 9. It consists of a bearing base plate 11 fixed to the tip (upper end) of this support column 10, and a pair of bearings 12, 12 fixed on this bearing base plate 11, and the axle 13 of the tire 1 is supported by these bearings 12, 12. The center of the tire 1 is located on the extension line of the shaft 8.

The rotating plate 9 is prevented from separating from the upper surface of the inclined table plate 6 by a presser piece 14.14 fixed to the inclined table plate 6.

Therefore, by rotating the rotating body 7 about the shaft 8, the tire 1 can be tilted to the left or right from the vertical position shown in FIG.

Therefore, the rotating body 7 that pivots the front tire 1 and the rotating body 7 that pivots the rear tire 2 have a relationship such that their axes are at 90 degrees to each other (inclined in opposite directions). In order to rotate all the front rotating bodies 7 in the same direction all at once, links 15 protruding from the respective bearing base plates 11 are connected to left and right long front connecting rods. The link 15 is connected to the rear connecting rod 17 by a pin joint so that all the rotating bodies 7 on the rear side can be rotated in the same direction at the same time. It is connected by.

The front and rear connecting rods 16.17 are linked to a common tire tilting actuator 20 via a crank mechanism 18.19, and the reciprocating movement of this actuator 20 causes them to move simultaneously but in opposite directions (when one moves to the left) The other side is moved in parallel (rightward movement).

However, the front tire... and the rear tire 2...
The actuator 20 is moved from the state in which all the tires are vertical as shown in FIGS. 1 and 2 to the state in which the front tire 2 is tilted to the left and the rear tire 2 is tilted to the right as shown in FIG. The angle of inclination can be adjusted arbitrarily by reciprocating the angle of inclination.

As shown in FIGS. 4 to 6, a switch operating piece 21 is provided protruding from the bearing base plate 11 of any one of the rotating bodies 7 of the front and rear tires. At the same time, the actuator 2 is mounted on the inclined base plate 6.
A pair of limit switches 22.22 electrically connected to
is attached, and when the rotary body 7 is rotated and the tires on the axle are tilted to a predetermined angle, one of the limit switches 22 is activated by the switch operation piece 21, and the actuator 20 is automatically stopped. When the rotating body 7 is rotated in the opposite direction to the above to bring the tire into a vertical position, the other limit switch 22 is activated and the actuator 20 is automatically stopped.

In this way, the front and rear tires..., 2... can be tilted in opposite directions to each other by driving one tire tilting actuator 20. One tire rotation motor 2 shown in the figure
3, the front and rear are linked separately, and are rotated simultaneously by the drive of this motor 23.

That is, the axles 13 of the front and rear tires 2... and the axles 13 of the rear tires 2 are connected by drive shafts 24, respectively, and the front left The left drive shaft 24 connected to the axle 13 of the front tire 1 and the left drive shaft 24 connected to the axle 13 of the rear left tire 1 are connected to the tire via chains 25 and 25, respectively. It is linked to a rotation motor 23.

The drive shaft 24, as shown in detail in FIG.
A male shaft 27 and a female shaft 28, each made of a square pipe, each having a universal joint 26, 26 at one end, are fitted together so as to be relatively slidable (in a so-called telescope structure). .28, therefore the universal joints 26 on both sides,
Both shafts 27, 28 are covered with cover tubes 29, 30 which have a similar telescopic structure and are extendable and retractable, and the universal joints 26, 26 on both sides are made expandable and retractable. It is covered with a bellows-shaped expandable cover 31°31.

Note that this drive shaft 24 may be one in which both shafts 27 and 28 are fitted by so-called spline fitting.

Each drive shaft 24 has universal joints 26, 26 at both ends connected to the axle 13 of the tire 1 or 2, and when the tires..., 2... are tilted as described above (the seventh ), each drive shaft 24
The shafts 27 and 28 extend and the universal joints 26 and 26 bend, so that even if the tires..., 2... are tilted, the rotational force is transmitted smoothly and evenly to them. be exposed.

In this way, by driving the motor 23, all the front and rear tires..., 2... rotate at the same time without uneven rotational speed, and the front and rear tires..., 2...
...If these tires are placed between them and rotated in an inclined state as shown in Fig. 7, the log can be transferred to the right side of the figure while rotating, and the transfer speed will depend on the inclination of the tires. It is obvious that the angle can be adjusted.

In addition, the front and rear tires...2... are tilted to the left or right around the tilt axis (axis 8) that makes a predetermined angle (approximately 45 degrees) with respect to the horizontal plane. Even when the tire is tilted, the middle part of its width contacts the outer circumferential surface of the log and applies a propulsive force toward the center line of the log, making it possible to efficiently propel the log by rotating the tire. It is possible.

Next, both barkers C1 and C2 are used for rough cutting and finishing for peeling the logs transferred while rotating in this manner.
I will explain about it.

The only difference between the two barkers C1 and C2 is that the barker C1 is equipped with a rotary cutter 32 for rough cutting, and the barker C2 is equipped with a rotary cutter 33 for finishing, which has a larger number of blades than the rotary cutter 32 for rough cutting. The other configurations are substantially the same.

That is, as shown in detail in FIGS. 9 and 10, a longitudinally long arm 34 is supported on the vertically movable frame B by a shaft 35 so as to be vertically movable.

The arm 34 passes through the frame of the vertically movable frame B, and its front side part 341 is located in front of the vertically movable frame B, and the rear side part 34
□ is located at the rear.

Front and rear frames 36 and 37 are respectively erected on the front side portion 341 of the arm 34 and on the vertically movable frame B.
．． A cylinder device 38 operated by compressed air is installed between the cylinders 37 and 37 .

This construction is performed by connecting the base end of the cylinder body 39 of the cylinder device 38 to the rear mount 37 with a pin joint, and by connecting the tip of the piston rod 40 to the front mount 36 with the same pin joint. When the piston rod 40 extends, the front side part 341 of the arm 34 rotates downward, and conversely, when the piston rod 40 contracts, the front side part 341 rotates upward.

A bearing tube 41 is mounted on a shaft at the front end of the arm 34 so as to be movable up and down.

That is, as shown in detail in FIG. 12, the bearing tube 41 has an upright plate 42 fixed to its front end, and a shaft 44 that is fixed to a shaft stand 43 fixed to the rear surface of this upright plate 42. 44 is supported by a pair of bearings 45, 45 fixed to the front end of the arm 34, so that the bearing sleeve 41 is positioned below the front side portion 341 of the arm 34 and is supported thereon.

The upright plate 42 of this bearing cylinder 41 and the front side portion 34 of the arm 34
The coil spring 4 is placed between the spring receiver 1 and the plate 46.
7 is stretched, thereby providing the bearing sleeve 41 with a so-called spring cushion.

This bearing tube 41 has a cutter holder 4 on its front side.
8 is supported so that it can swing.

That is, as shown in FIG. 12, the cutter holder 48 has a shaft 49 protruding from its rear face, and vertical plate-shaped brackets 50° 50 protruding from both left and right ends of the front face. By inserting the cutter holder 48 into the cutter holder 41 and preventing its removal from the cutter holder 41, the cutter holder 48 is pivotably mounted on the front end of the arm 34, as shown in FIGS. 9 and 10, and acts on the upper side thereof. The balance springs 51 (there are two on the left and right) maintain the left and right balance.

As shown in FIG. 12, the left and right brackets 50, 50 of this cutter holder 48 are each provided with a circular bearing hole 51, a slit 52 continuous with the bearing hole on the outside, and a plurality of bolt through holes 53. The above-mentioned rough cutting rotary cutter 32 or finishing rotary cutter 33 has both left and right ends of a cutter shaft 55 penetrating through its rotary body 54 supported by these left and right brackets 50 and 50 as follows. , is mounted on the cutter holder 48.

That is, as shown in the figure, an inner mounting disk 56 having a shaft through hole 56 on each of the left and right sides of the cutter shaft 55;
Outer mounting disc 5 with shaft through hole 57' and boss 57''
7. Flange bearing 58, bearing cover 5
9. Prepare the adapter 60°61.62, the bearing mounting bolts 63, and the cover mounting screws 64, and as shown in FIG. 56'' is simply fitted to the end of the rotating barrel 54 and set on the inner surface of the bracket 50, while the outer mounting disk 57 is set on the outer surface of the bracket 50 by fitting its boss 57'' into the slit 52. , bearings 58 are set on the outer surface of the outer mounting disc 57, and these bearings 5
8. Disc 57, bolt through hole 65 of bracket 50...
・, 66..., 53... (Figure 12) bolt 63
The bearing cover 5 is screwed into the screw hole 67 of the disk 56 through the bearing cover 5.
By screwing 9, the cutter shaft 55 can be attached to the disc 5.
6. It is firmly supported by a bearing, passing through the bracket 50, disc 57, bearing 58, and bearing cover 59.

Since the cutter shaft 55 is thus covered and supported by the disks 56, 57, the flange of the bearing 58, and the bearing cover 59, the peeled bark will not become tangled therewith.

To remove the rotary barrel 54 from the cutter holder 48, remove the bolts 63, and then insert the cutter shaft 55 through the left and right slits 52, 52 while keeping the various parts mentioned above fitted thereto. Simply pull it forward,
The rotary cylinder 54 and therefore the rotary cutter 32 or 33 can be easily replaced.

A sprocket wheel 68 is fitted onto the cutter shaft 55, and is linked to a cutter rotation motor 70 on the rear side 34□ of the arm 34 via a chain 69, as shown in FIG.

Both the rough cutting and finishing barkers C1C2 have such a structure, but these are attached to the predetermined positions of the frame A as shown in Figures 1 and 3 in correspondence with each other. They are controlled separately by reflective phototubes 71 and 71.

That is, the phototubes 71 and 71 emit light forward in order to individually detect the logs being transported by the tires..., 2... When the phototube 71 corresponding to the barker C1 detects log cutting, the piston rod 40 of the cylinder device 38 of the barker C1 is extended and the arm is connected as described above. The front side part 341 of 34 rotates downward,
This allows the rough cutting cutter 32 to hit the upper side of the log, and when the phototube 71 corresponding to the barker C2 detects the log, the piston rod 40 of the cylinder device 38 of the barker C2 extends and finishes the log. The cutter 33 is designed to hit the log.

On the other hand, the log is transported to a point beyond the irradiation position of the phototube 71.
- If it falls out of the irradiation position due to an accidental fall from above, the piston rod 40 of the cylinder device 38 in each of the barkers C1 and C2 contracts, and the front part 34 of the arm 34 rotates upward. The cutters 32 and 33 are retracted upward.

Each phototube 71 has a nozzle 7 at its tip, as shown in FIG.
2, and a cyclone ring 73 is disposed within this nozzle 72.

Air is fed into the nozzle 72 through an air pipe 74, and the phototube 71
By irradiating light while blowing out air from 2, the light beam will not be blocked by peeled off skin pieces, dust, etc.

The above-mentioned vertically movable frame B on which both barkers C1 and C2 are mounted is suspended by chains 75 and 75 as shown in FIGS.
The motor 76 is driven to move up and down along the left and right vertical rails 3, 3.

When the log is rotated and transferred as described above and the phototube 71 corresponding to the barker C1 is detected,
The rotary cutter 32 for rough cutting automatically descends as described above and hits the log, and then when it is detected by the phototube 71 corresponding to the barker C2, the finishing cutter 33 automatically lowers and hits the log. After the bark of the log is roughly peeled off with a rough cutting rotary cutter 32, the remaining small pieces of bark can be evenly peeled off with a finishing rotary cutter 33.

As is clear from the detailed description above, the bark stripping machine of the present invention is equipped with universal joints at both ends of a telescoping shaft that connects the axles of the front tires and the rear tires. The arm, which is connected via a drive shaft and has a rotary cutter mounted on its axis, is moved up and down by the expansion and contraction of the piston rod of the cylinder device, and a phototube detects logs, thereby controlling the cylinder device. A belt and a pulley, or a chain and a sprocket wheel are provided for each tire, and rotational force is transmitted through these, and the arm is biased to rotate by a spring. Compared to conventional products, it has the following features:

(1) Rotational force can be transmitted smoothly and evenly to all front and rear tires.

(2) Conventionally, belts and pulleys, or chains and sprocket wheels had to be cleaned and replaced frequently, but this type of trouble is eliminated and failures are less likely, making it economical.

(3) In the past, since there was a rotating shaft, belt, or chain on the underside of the tire, it was troublesome to remove flakes of skin that had fallen on the underside of the tire. Since there is no such thing, such removal work can be carried out easily.

(4) In the past, in order to change a tire, it was necessary to remove the pulley or sprocket wheel from the axle, which was very troublesome, but with the present invention, the connection between the axle and the drive shaft is All you have to do is release it, and since this connection is made with a universal joint and can be easily released, it can be easily replaced.

(5) The rotary cutter is always retracted to a position where it does not hit the log, and can be automatically moved to the position where it hits the log when it is sent, which is efficient.

(6) It is safe because the rotary cutter can be automatically moved to the retracted position when the log is transferred to a position where it is removed from the rotary cutter or when it falls from the tire.

(7) By adjusting the pressure of the pressure medium supplied to the cylinder device, the force with which the rotary cutter presses against the log can be easily adjusted.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view, Fig. 2 is a plan view, Fig. 3 is a right side view, Figs. The figure is a side view, Figure 5 is the 4th
Figure 6 is a view taken from a 45 degree angle in the upper right, Figure 7 is a partial plan view showing the tilted tire, and Figure 8 is a partially cutaway view of the drive shaft. FIGS. 9 and 10 are enlarged side views and plan views of the barker, FIGS. 11 and 12 are enlarged cross-sectional views and exploded perspective views showing the shaft structure of the rotary cutter, and FIG. 13 is an exploded perspective view of the phototube. FIG. 3 is a partially cutaway side view. 1.2...Front and rear tires, 32, 33...One rotation cutter, 34...Arm, 13...
Tire axle, 27.28...Extendable shaft, 26...Universal joint, 24.
... Drive shaft, 38 ... Cylinder device, 40 - Bent rod, 71 ... Phototube.

Claims (1)

[Scope of utility model registration request] In order to load logs horizontally and transport them in the longitudinal direction while rotating, a plurality of tires on the front side and a plurality of tires on the rear side, whose axes run in the left and right directions, are separated from each other by a required distance in the front and back, and are spaced parallel to each other. In a bark stripping machine, in which a rotary cutter that is tiltable and that strips the bark of a log transported by the cutter is mounted on an arm that moves up and down, the axles of a plurality of tires on the front side and the rear side The axles of a plurality of tires are connected to each other via a drive shaft having a universal joint at both ends of a telescoping shaft, and the arm is moved up and down by the expansion and contraction movement of a piston rod of a cylinder device. A bark stripping machine further comprising a phototube for detecting the log being transferred as described above, and the cylinder device is controlled by the phototube.