JP2554610B2 - Peeling device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peeling device for peeling a log, and in particular, in a device having a plurality of arms having a cutter portion at the tip thereof which can be opened and closed freely, devised control of the log loading portion. Also, the present invention relates to a device in which the structure of each arm is simplified to reduce the weight thereof, and further the stripping can be performed more efficiently.

[0002]

2. Description of the Related Art A conventional peeling device {for example, a so-called ring barker (trade name)} has a main portion (a rotor unit portion around a cutter portion) as shown in FIGS. It has a configuration in which three arm portions 100 are provided so as to be openable and closable. The configuration of one arm unit 100 will be described. First, there is a fixed gear 101, and a gear 103 meshes with this gear 101. This gear 1
03 is fixed to the shaft 105, and the gear 107 is fixed to the shaft 105. Another intermediate shaft 109 is arranged in parallel with the shaft 105, and a gear 111 is fixed to the intermediate shaft 109. The gear 111 is in mesh with the gear 107. The intermediate shaft 109 is the shaft 1.
It is shorter than 05.

A sprocket 113 is fixed to the intermediate shaft 109. On the other hand, there is a cutter portion 115, and another sprocket 119 is fixed to the shaft 117 of the cutter portion 115. A chain 121 is attached to the sprockets 113 and 119.
Is wound. Further, the components described after the gear 103 are configured to rotate together with the rotating unit 123. Further, as shown in FIGS. 11 and 12, a pneumatic cylinder mechanism 125 is installed, and the pneumatic cylinder mechanism 125 is used to open / close the whole between the position shown by the solid line and the position shown by the phantom line. Is. That is, log 1
It is opened until the load 27 is loaded (the position shown by the phantom line in FIG. 11), and closed when the log 127 is loaded.

In the above structure, when the log 127 is carried in and the rotating portion 123 rotates, the entire constituent parts after the gear 103 meshing with the fixed gear 101 rotate. At the same time, the gear 103 rotates and the shaft 1
The gear 107 rotates via 05. The rotation of the gear 107 causes the intermediate shaft 109 to rotate via the gear 111, which causes the sprocket 113 to rotate. The rotation of the sprocket 113 causes the sprocket 119 to rotate via the chain 121. Sprocket 119
Rotation of shaft 117 causes shaft 117 to rotate, thereby
The cutter unit 115 rotates. Then, the arm portion 100 having such a configuration has, for example, the entire circumference 36 when viewed from the front.
It is installed at three positions of 120 °, which is obtained by dividing 0 ° into three equal parts, and the cutters 115 of the three arm units 100 peel off the carried logs 127.

[0005]

The above-mentioned conventional structure has the following problems. First, when the log 127 is loaded, for example, when the log 127 is transported, the log 12
Due to lack of smoothness of transportation due to slip of 7 etc.,
The log 127 may collide with the arm 100 in the closed state, impairing the subsequent peeling operation. Further, in order to efficiently strip the skin, it is necessary to sequentially feed a plurality of logs 127 at intervals as small as possible, but the conventional configuration naturally has a limit.

As another problem, as described above, the structure of the so-called arm portion 100 is 360 ° around the entire circumference when viewed from the front.
Three pieces are installed at a position of 120 °, which is divided into three equal parts.
There is a problem that the structure of each arm 100 is relatively complicated and heavy. As described above, the three arms 100 open and close as the log 127 is carried in. However, since the weight is heavy, the responsiveness of opening and closing may be poor. When the arm portion 100, which is to be located at, is closed upward (that is, against gravity) when it is closed, there is a problem that the response is poor due to its heavy weight.

The present invention has been made on the basis of such a point, and an object of the invention is to devise a control at a carrying-in portion of a log and to open / close the arm portion by simplifying and reducing its weight. It is an object of the present invention to provide a peeling device configured to improve the responsiveness of the operation and to more efficiently peel the skin.

[0008]

In order to achieve the above object, a peeling device according to the present invention is a gear 1 which is fixed and has an annular shape.
And a rotor unit 21 rotatably arranged with respect to the fixed unit, and the rotor unit 21.
In the peeling device, which is equipped with a cutter unit 19 attached to the front end and rotating at the tip, and a plurality of arm units 2 which can be opened and closed by a cylinder mechanism 22, the opening and closing of the plurality of arm units 2 is performed to displace the arm units 2. Arm portion open / close detection mechanism 29 for detecting more, log transport distance detection mechanisms 41, 43, 45 for detecting the transport distance of the log 25 on the inlet side of the plurality of arm portions 2, the arm portion open / close detection mechanism 29 and logs. Based on the signals from the transport distance detecting mechanisms 41, 43, 45, the plurality of arm portions 2 are transported even though the tips of the logs 25 are transported by a sufficient distance to be carried into the plurality of arm portions 2. And a control mechanism 47 for detecting an abnormality in the closed state.

In the peeling device according to the first aspect, the rotor unit 21 meshes with the gear 1 and the gear 3 revolves around the gear 1 by the rotation of the rotor unit 21 while rotating around the gear 1 via the shaft 5. The arm portion 2 is provided with the gear portion 3 by engaging with the gear 3 and reversing the rotation.
The arm portion 2 is provided with a rotating body / endless body mechanism 11, 13, 15 that rotates in the same direction via a shaft 9 by the rotation of the gear 7, The cutter unit 19 attached to the tip is rotated.

Further, in the peeling device according to claim 1, a plurality of pressing rollers 49 and 55 for pressing the log 25 from above are provided on the inlet side of the plurality of arm portions 2, and the crawler type conveying mechanism 31 is provided on the opposite side. Is provided, and the plurality of pressing rollers 49, 55 are connected to the cylinder mechanism 53,
It is characterized in that it is configured such that it can be raised and lowered independently by 59.

[0011]

In other words, it is possible to detect a situation where the tip of the log 25 collides without being carried into the arm portion 2 and perform a quick process. Further, by incorporating the gears 3 and 7 for reversing the rotation, the shaft 9 and the like in the rotor unit rotor unit 21, the configuration of the arm portion 2 itself can be simplified and the weight thereof can be reduced. The responsiveness of the second operation is improved. Further, the pressing rollers 49 and 55 can be independently lifted and lowered by the cylinder mechanisms 53 and 59, so that, for example, when logs 25 having different diameters are sequentially carried in, the logs 25 can be promptly responded to each other. The space between them is narrowed to improve work efficiency.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the case of the present embodiment, the three arm portions 2 of the rotor unit 21 are arranged so as to be openable and closable at positions of 120 °, which is obtained by dividing the entire circumference 360 ° into three equal parts when viewed from the front. As a representative of these, the configuration of one arm unit 2 will be described. The configuration of the other two arm portions 2 is also the same. As shown in FIGS. 1 to 5, first, there is a fixed gear 1 (a part of the fixed portion).
The gear 3 shown in FIG. In FIG. 4, the gear 3 is located above the fixed gear 1 in the drawing. The gear 3 is fixed to the intermediate shaft 5. That is, the intermediate shaft and the gear for reverse rotation, which are conventionally located at the position close to the cutter unit side and are arranged outside, are internally mounted on the rotor side (rotating unit 21 side), whereby the arm unit 2 itself. The structure is simplified and the weight is reduced.

A gear 7 is meshed with the gear 3,
The gear 7 is fixed to the shaft 9. Three sprockets 11 are fixed to the tip side of the shaft 9. Further, another three sprockets 13 are arranged at positions separated from the three sprockets 11.
Three chains 15 are wound around these sprockets 11 and 13. The sprocket 13
Is fixed to a shaft 17, and a cutter portion 19 is attached to the shaft 17. A pneumatic cylinder mechanism 22 is connected to each arm 2.

According to the above construction, when the rotor unit 21 rotates, the three arm portions 2 rotate. At the same time, the gear 3 meshing with the fixed gear 1 rotates, which causes the gear 7 to rotate. This gear 7
The rotation of the shaft rotates the shaft 9, which causes the sprocket 11 to rotate. The rotation of the sprocket 11 causes the sprocket 13 to rotate via the chain 15, which causes the cutter portion 19 to rotate via the shaft 17. That is, the three arm parts 2 rotate, and the cutter parts 19 of the individual arm parts 2 rotate,
Thereby, the log 25 is peeled off.

Next, the control before the log 25 is carried into the rotor unit having the above structure will be described with reference to FIGS. 6 to 8. As shown in FIG. 6, there are three arm portions 2, and the configuration of each arm portion 2 is as described above. Further, as shown in FIGS. 1 and 6, a distance sensor 29 as an arm opening / closing detection mechanism is installed,
The distance sensor 29 monitors the distance to the arm portion 2. That is, the arm portion 2 has the pneumatic cylinder mechanism 22 which has already been described when the log 25 is loaded.
The arm portion 2 is displaced and the distance is changed depending on the opened / closed state. More specifically, the arm portion 2 rotates about the position of the shaft 9 as a rotation center. At this time, as shown in FIG. 1, the distance sensor 29 and the pneumatic cylinder mechanism of the arm portion 2 are rotated. The distance (L ₂ ) from the connection portion with 22 changes. That is, when the pneumatic cylinder mechanism 22 is expanded and the arm portion 2 is closed, the distance (L ₂ ) is reduced, and conversely, the pneumatic cylinder mechanism 22 is contracted and the arm portion 2 is closed. When it is opened, the distance (L ₂ ) becomes large. Then, the open / closed state of the arm portion 2 can be detected by monitoring the change by the distance sensor 29.

On the other hand, as shown in FIG. 7, on the front side of the rotor unit, a conveying means 31 and conveying means 33a, 33b are installed so as to sandwich the log 25 from above and below. The carrying means 31 includes a drive motor 35, a pair of rotating bodies 37a and 37b, and a pair of rotating bodies 37a and 37a.
It is composed of an endless body 39 wound around 37b, and is a so-called crawler type conveying means. still,
The details are as shown in FIGS. 9 and 10.
A plurality of support portions 39a are attached to the endless body 39 at predetermined intervals. The support portion 39a has a substantially drum-shaped recess, and has a plurality of claws protruding from the support portion 39a. An encoder 41 is connected to the drive motor 35, and the feed amount of the log 25 can be detected by the number of pulses output from the encoder 41. Also, the sensor 43 is installed,
The tip of the log 25 is detected.

Then, as shown in FIGS. 7 and 8, first, the sensor 43 detects the tip of the log 25, and after that time, the counter 45 counts the number of pulses of the pulse signal output from the encoder 41. The feed amount of the log 25 is calculated from the number and the feed distance per unit pulse, and the control means 47 determines whether or not the log 25 has been fed by an amount corresponding to the distance (L ₁ ) to the rotor unit. On the other hand, based on the signal from the distance sensor 29 and the time setting of the timer 48, the control means 47 confirms that the arm section 2 is closed. That is, it is confirmed by the signal from the distance sensor 29 that the arm 2 is closed. That is, it can be seen from the signal from the distance sensor 29 that the arm unit 2 is closed, and when the state continues for a time period set by the timer 48, the arm unit 2 is closed. Determine that there is. Then, when the log 25 is sent by the distance (L ₁ ) but the arm portion 2 is closed (for example, it is closed to the maximum), the tip of the log 25 is the rotor. It has not been normally loaded into the unit 21 (not normally sandwiched between the cutter parts 19 of the three arm parts 2), and the tip of the log 25 has collided with the closed arm part 2. Then, an alarm signal s47 to that effect is output. Thereby, the device on the sending side is stopped. As the distance sensor 29, for example, a known “proximity sensor” may be used. This type of "proximity sensor" includes one that utilizes a magnetic field and one that utilizes an electric field.
In the case of the present embodiment, if the operation set distance of the proximity sensor is set in advance and the arm portion 2 is turned on within that distance, the opening and closing of the arm portion 2 is thereby performed. Can be detected. That is, the signal of the distance sensor 29 is “on” and the state is the timer 4
If it continues for more than the time setting of 8, the arm 2 is judged to be open, and conversely, if the signal of the distance sensor 29 is "OFF", the arm part 2 is closed. become. When the log 25 is sent by the distance (L ₁ ) but the arm portion 2 is closed, the log 25 is not normally loaded into the arm portion 2.

Next, the structure of the conveying means 33a and 33b will be described with reference to FIGS. 7, 9 and 10. That is, in the case of the present embodiment, the transport means 33a and 33b are configured so that they can be independently rotated and moved up and down.
That is, the conveying means 33a includes a pressing roller 49 having a substantially drum shape, a drive motor 51 for driving the pressing roller 49, and a hydraulic cylinder mechanism (or a pneumatic cylinder mechanism) 53 for moving the pressing roller 49 up and down. It is configured. The rotation of the drive motor 51 is performed by rotating the rotating body 52,
The pressing roller 49 is provided via the endless body 54 and the rotating body 56.
Is transmitted to Further, the conveying means 33b includes a pressing roller 55 having a substantially drum shape, a drive motor 57 for driving the pressing roller 55, and a hydraulic cylinder mechanism (or a pneumatic cylinder mechanism) 59 for moving the pressing roller 55 up and down. It is configured. The rotation of the drive motor 57 is transmitted to the pressing roller 55 via the rotating body 58, the endless body 60, and the rotating body 62. In this embodiment, in the conveying means 33a and 33b, the pressing rollers 49 and 55 are forcibly rotated by the drive motors 51 and 57, respectively. However, this is simply a free state (rotatable). It may be installed in (state). In that case,
The conveying force is applied only from the crawler type conveying means 31 side, and the pressing rollers 49 and 55 rotate as the log 25 moves.

Then, for example, with respect to the log 25 having a relatively small diameter, both the conveying means 33a and 33b lower the pressing rollers 49 and 55 to a predetermined position (outer peripheral position of the log 25). It is assumed that the log 25 is transported in that state and the rear end of the log 25 is displaced from the transport means 33a. At that time, when the next log 25 has a relatively large diameter, the hydraulic cylinder mechanism 53 on the side of the conveying means 33a is driven to raise the pressing roller 49 by a predetermined amount.
Then, the next log 25 is loaded. That is, the transport means 3
3b is still carrying the preceding relatively small diameter log 25, and the carrying means 33a is carrying the next relatively large diameter log 25. On the other hand, in the conventional case,
Since the conveying means 33a and 33b are integrated, after the preceding relatively small diameter log 25 has been conveyed, the pair of pressing rollers is raised by a predetermined amount to prepare for the next relatively large diameter log 25. It will be. That is, in the case of the present embodiment, the interval between the logs 25 to be processed can be made smaller by that much, and more efficient peeling processing can be performed.

Further, as described above, in the case of the present embodiment, since the log 25 is supported from below by the crawler type conveying means 31, the core of the log 25 and the core on the rotor unit side are arranged. The matching operation is performed on the rotor unit 21 side. In other words, the crawler type conveying means 31 has a constant level, and the conveying means 31
Rotor unit 2 so that it aligns with the core of the upper log 25
The first side is moved up and down by a hydraulic cylinder mechanism (not shown).

According to this embodiment, the following effects can be obtained. First, in the configuration of the arm unit 2,
The intermediate shaft and the gear for reverse rotation, which are conventionally arranged in the vicinity of the cutter of the arm, are incorporated as the intermediate shaft 5 and the gear 3 on the base end side of the rotor unit 21, which is not in the arm 2, Since the structure of the arm portion 2 itself is simplified and made lighter, the operation of the arm portion 2, that is, the pneumatic cylinder mechanism 2 is correspondingly increased.
The responsiveness of the opening / closing operation according to 2 is improved. In particular, the arm portion 2 that is positioned below due to the rotation is closed against gravity, but in that case as well, the responsiveness of the operation is improved by the reduction of its own weight. Became.

Further, based on the conveyance distance (L ₁ ) of the log 25 on the inlet side of the rotor unit 21 and the detection of the opening / closing of the arm part 2, the log 25 is sent to the arm part 2 normally even though the log 25 is sent. Since the feeding device is stopped by detecting that the log
Even if a situation in which the robot is not normally carried into the arm portion 2 occurs, it is possible to promptly respond to the situation and return to the normal state, and eventually work efficiency can be improved. It was In addition, it is possible to prevent damage to each part. Further, in the conveying means 33a and 33b, since the pressing rollers 49 and 55 are independently moved up and down, even when the diameter of the logs 25 to be processed varies, the logs 25 to be processed are not separated from each other. It has become possible to improve work efficiency by reducing the interval between.

Further, in the case of the present embodiment, at the entrance side of the rotor unit 21, the log 25 is supported from below by a crawler type conveying means 31, and is pressed from above by a pressing roller type conveying means 33a, 33b. Since it is set, the following effects can be obtained. First, the log 25 is supported in a linear shape (a linear shape connecting a plurality of supporting portions 39a) in the longitudinal direction of the crawler type conveying means 31. That is, as shown in FIG. 9, the logs 25 are supported linearly in the feed direction (although in practice, they are intermittently supported by the plurality of supporting portions 39a). At the same time, each supporting portion 39a of the transporting means 31
Has a drum-shaped recess and is formed with a plurality of claws protruding, so that the log 25 is inadvertently rotated by the action of the cutter unit 19 on the peeling device side. Can be prevented. By the way, in the conventional case, a plurality of sets of supporting means, each of which has three rollers attached to it so that it can be opened and closed,
A log 25 is formed by three rollers of the plurality of sets of supporting means.
To support (for example,
No. 22). In this case, since the log 25 is supported by the point contact of each roller, the log 25 is not sufficiently supported, and the log 25 may inadvertently rotate due to the action of the cutter portion 19 of the arm portion 2. Yes, there is a risk that the normal peeling action may be impaired.
Especially in winter, the surface of the log 25 is frozen and slippery, which is remarkable. Further, as shown in the figure, since the supporting portions 39a of the transporting means 31 are provided in plural at intervals, even if there are nodes or the like in the log 25, those portions are not the supporting portions 39a. Since it is located between the supporting portions 39a, no bearing is generated.

The present invention is not limited to the above embodiment. First, the specific configuration of each detection mechanism is merely an example, and various known detection mechanisms can be applied. Further, the number of pressing rollers, the lifting means, etc. are not particularly limited.

[0025]

As described in detail above, according to the peeling device of the present invention, it is arranged to detect whether or not a log has been normally carried into the arm portion and output an alarm, so that a prompt response can be made. It is possible to return to the normal state and improve work efficiency. In addition, the shaft and the gear for reverse rotation, which were conventionally arranged in the vicinity of the cutter of the arm unit, are incorporated inside the base unit side of the rotor unit, not inside the arm unit, to simplify the configuration of the arm unit itself. Since it is configured to be lightweight, the responsiveness of the opening / closing operation of the arm can be improved. Furthermore, since the pressing rollers are configured to be independently raised and lowered, the intervals between the logs to be processed can be made small and the work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of the present invention and is a front view of a rotor unit portion.

FIG. 2 is a side view of a rotor unit portion showing an embodiment of the present invention.

FIG. 3 is a view showing an embodiment of the present invention and is a front view of one arm portion of the rotor unit portion.

FIG. 4 is a cross-sectional view of one arm portion of the rotor unit portion showing the embodiment of the present invention.

FIG. 5 is a sectional view of an intermediate shaft and a gear fixed to the intermediate shaft according to an embodiment of the present invention.

FIG. 6 is a diagram showing an embodiment of the present invention, and is a diagram showing a configuration in which opening / closing of an arm portion is detected by a distance sensor.

FIG. 7 is a diagram showing an embodiment of the present invention and is a diagram showing a configuration for detecting a log feed amount.

FIG. 8 is a block diagram showing a configuration for detecting whether or not a log has been normally carried in to an arm portion side in a diagram showing an embodiment of the present invention.

FIG. 9 is a side view showing the structure of a pressing roller unit in a view showing an embodiment of the present invention.

FIG. 10 is a front view showing the configuration of a pressing roller unit in a diagram showing an embodiment of the present invention.

FIG. 11 is a front view of a rotor unit portion showing a conventional example.

FIG. 12 is a side view of a rotor unit portion showing a conventional example.

FIG. 13 is a view showing a conventional example and is a cross-sectional view of one arm portion of a rotor unit portion.

[Explanation of symbols]

 1 Gear on fixed side 2 Arm part 3 Gear 5 Intermediate shaft 7 Gear 9 Shaft 11 Sprocket 13 Sprocket 15 Chain 17 Shaft 19 Cutter part 21 Rotor unit 22 Pneumatic cylinder mechanism (cylinder mechanism) 25 Log 29 Distance sensor (opening and closing of arm part) Detecting mechanism) 31 Conveying means 33a Conveying means 33b Conveying means 41 Encoder (part of log conveying distance detecting mechanism) 43 Sensor (part of log conveying distance detecting mechanism) 45 Counter (part of log conveying distance detecting mechanism) 47 Control Means 49 timer

Claims (3)

(57) [Claims] 1. A fixed portion having a fixed and annular gear 1, a rotor unit 21 rotatably arranged with respect to the fixed portion, and a cutter portion 19 attached to the rotor unit 21 and rotating at a tip thereof. And a plurality of arm portions 2 that can be opened and closed by a cylinder mechanism 22, and an arm portion opening / closing detection mechanism 29 that detects opening / closing of the plurality of arm portions 2 by the displacement of the arm portions 2. Log transport distance detection mechanisms 41, 43, 45 arranged at predetermined positions on the inlet side of the plurality of arms 2 for detecting the tips of the logs 25 and detecting transport distances of the logs 25 from the detection points, and the arms. Part open / close detection mechanism 29 and log transport distance detection mechanism 41, 4
When the tips of the logs 25 have been conveyed by a sufficient distance to be carried into the plurality of arm portions 2 based on the signals from 3, 45, the plurality of arm portions 2 are in the closed state. And a control mechanism 47 for detecting an abnormality in the skin peeling device. 2. The peeling device according to claim 1, wherein the rotor unit 21 meshes with the gear 1 and revolves around the gear 1 by the rotation of the rotor unit 21 while revolving around the gear 1 via a shaft 5. The arm portion 2 is provided with the gear portion 3 by engaging with the gear 3 and reversing the rotation.
The arm portion 2 is provided with a rotating body / endless body mechanism 11, 13, 15 that rotates in the same direction via a shaft 9 by the rotation of the gear 7, The peeling device is characterized in that the cutter unit 19 attached to the tip is rotated. 3. The peeling device according to claim 1, wherein a plurality of pressing rollers 49 and 55 for pressing the log 25 from above are provided on the inlet side of the plurality of arm portions 2, and the crawler type conveying mechanism 31 is provided on the opposite side. And a plurality of pressing rollers 49 and 55 are independently movable by cylinder mechanisms 53 and 59, respectively.