JPH04241902A - Method and apparatus for sorting in sawmill machinery - Google Patents

Abstract

PURPOSE:To cause no damage to a sorting guide plate against which scantling abuts, even in the case where the sorting guide plate is provided, by holding the scantling between pressing arms pressed down and feed rollers to keep a strip line. CONSTITUTION:The body 2 of a sawmill machine moves in alignment with the feed of lumber by feed rollers 13 and stops when it comes to the terminal end part of a lumber feed line 14. Cylinder rods 25 of pressing cylinders 24 are retracted to release their press and guided by a guide rail 21 to be returned above the lumber feed line 14 to the original position immediately behind and above the body 2 of the sawmill machine. On the other hand, scantling A on feed rollers 13 are classified into the finished scantling A1, the return lumber A2 and the waste lumber 'a' by the operations of a sorting unit 34 and a transferring conveyor unit 32, and transferred in predetermined directions.

Description

[Detailed description of the invention]

0001

[Purpose of the invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sawmill equipped with a sawmill called a ripsaw, and more particularly to a method and apparatus for sorting sawn lumber after sawing.

0002

BACKGROUND OF THE INVENTION For example, in sawing planks or the like from sawn timber, a sawmill machine body such as a single sawmill or a double sawmill machine is used, and a material feeding device is combined around it to form a series of sawmill machines. A predetermined sawing process is carried out while feeding sawn material in a circular manner.

[0003] As a matter of course, each sawing process produces the product that has been sawn and the remaining material that is to be ground again, or in the initial or final sawing process, the product material and the end waste material are mixed together. These products must be sorted and sent to their respective next processes. For this purpose, a sorting device has traditionally been attached, and this is generally shown in Figure 1.
As shown in 0, the sorting piece 33' of the sorting device 1' is provided below the material feeding surface at a position that coincides with the sawing line. It is sorted by sorting the materials.

[0004] As a prerequisite for the reliable operation of the sorting piece 33', it is required that the sorting piece 33' accurately matches the sawing line. 7, the sorting guide plate 3 is placed so that it reaches the sorting device 1'.
5 is provided, and this plays the role of maintaining the dividing line.

However, the sawn material A originally has internal stress (so-called ate), and even if the end of the sorting guide plate 35 is facing immediately after the saw blade 7, it will not bend or twist immediately after sawing. In the case of the generated sawn material A, the tip thereof may collide with the sorting guide plate 35 as shown in FIG. 10(b), and the sawn material A cannot be transported in a straight line. As a result, not only the next process of sorting work cannot be carried out, but also the sorting guide plate 35 is damaged. By the way, under normal usage conditions, sorting guide plate 3
No. 5 has to be replaced approximately every three months due to collisions between sawn timbers.

[0006]

[Technical matters attempted to be developed] The present invention has been developed in view of this background, and it is an improvement over the conventional method of inserting a sorting guide plate between these lines in order to secure the lines on which the sorting pieces act. Instead, we attempted to develop a new sorting method and device for a lumber sawmill that allows for smooth sorting by reliably holding sawn wood even after sawing.

[0007]

[Structure of the invention]

[Means for achieving the object] The first invention of the present application is a sorting method for a sawmill, in which the sawn sawn material is separated at the sawing line at the latter stage of the main body of the sawmill.
The cutting line is maintained by holding down the sawn material after sawing with a pressing member that moves together with the sawn material.

[0008] Furthermore, the second invention according to the present application is a sorting device for a sawmill, which separates the sawn sawn material at the latter stage of the main body of the sawmill along the sawing line as a boundary, and the sorting device separates the sawn material along the sawing line as a boundary. This method is characterized in that it is carried out by pressing down the sawn material after sawing and splitting with a pressing arm that moves together with the sawn material.

Furthermore, the third invention of the present application, a sorting device for a lumber machine, is characterized in that, in addition to the above-mentioned requirements, a plurality of the pressing arms are provided so as to move cyclically relative to each other. be. These inventions attempt to achieve the above object.

0010

[Operation of the invention] According to the present invention, the sawn material after sawing is held between the material feed frame that supports the lower surface of the sawn material and the pressing member that acts on the upper surface of the sawn material, thereby making it possible to maintain the sawn line. It will be planned. In addition, when a plurality of pressing arms are provided so as to move in a circular manner, the pressing arms that circulate in sequence will act one after another on the sawn material that is continuously fed out, causing the feeding of the sawn material to be interrupted. High-speed feeding is possible without any problems.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The sorting method and apparatus for a sawmill according to the present invention will be explained in detail below with reference to the drawings.

[0012] In the explanation, first, the sorting device of the present invention will be explained along with an overview of a sawmill to which this device is applied, then other embodiments of the sorting device, and finally the sorting of the present invention using these sorting devices. Explain the method.

In the figure, the reference numeral 1 indicates the sorting device of the present invention, which consists of a sawmill main body 2 that actually saws and splits the sawn material A, and a material feeder that cyclically transports the sawn material A. Together with the device 3, it forms a main component of the sawmill 5, and plays the role of sorting the sawn material A that has been sawn and split by the sawmill main body 2 into product material A1, return material A2, and waste material a.

As shown in FIGS. 1 to 3, the sawmill main body 2 includes a saw blade 7 consisting of a circular saw blade or a band saw blade, a sawing motor M1 that drives the saw blade 7, and a sawing and splitting motor M1 that connects the two. It comprises a transmission member 8 consisting of a belt, pulley, etc. that transmits the power of M1 to the saw blade 7, a holding roller 9 that holds the sawn material A in the middle of sawing, and a ruler 10 that serves as a reference for determining the sawing size. .

As shown in FIGS. 1 to 3, the material feeding device 3 includes a material feeding pedestal 12 formed by appropriately combining angle materials, etc., and a material feeding pedestal 12 that is supported by an upper rectangular frame in an idling or actively driven state. The feed roller 13 that is
and a feed motor M2 for driving the sawmill as a main component, and an outgoing material feeding line 14 extending back and forth across the sawmill main body 2, and this outgoing material feeding line 14.
The return material feed line 1 is arranged side by side along the
It consists of 5.

[0016] The sorting device 1 in the sawmill according to the present invention operates from immediately after the sawmill main body 2 to the outbound material feeding line 1.
4 and from the terminal end of the outward material feeding line 14 to the starting end of the returning material feeding line 15. Note that the terminal end of the outgoing material feeding line 14 is the end opposite to the sending side of the sawn material A (this is referred to as the starting end of the outgoing material feeding line 14) according to the traveling direction of the sawn material A. Yes, on the other hand, the starting end of the return material feeding line 15 is
The traveling direction of the sawn material A (this time, the forward material feeding line 14
(in the opposite direction), the end adjacent to the terminal end of the outgoing material feeding line 14 is referred to as the end, and the opposite end thereof is referred to as the terminal end of the returning material feeding line 14.

Further, the sorting device 1 in the sawmill according to the present invention holds the sawn sawn material A and maintains the sawn split line L, while moving it from immediately after the sawmill main body 2 to the outgoing material feeding line 14.
A holding device 20 is installed from the terminal end of the outgoing material feeding line 14 to the returning material feeding line 15 to transfer the sawn material A to the product material A1 and return material A2. and a sorting device 30 that sorts waste materials into waste materials a and transfers them in a predetermined direction.

The holding device 20 is a part constituting a characteristic structure of the present invention, and as shown in FIGS. A single holding device 20a is provided so as to be slidable. This holding device unit 20a is provided with a pressing arm 23 in a swinging state with respect to a slider 22 that is slidably guided by a guide rail 21, and further a pressing cylinder 24 that swings and drives this pressing arm 23 is attached to the slider 22. Similarly, the cylinder rod 25 of the pressing cylinder 24 is rotatably supported on one end of the pressing arm 23, and the piece 26 of the transfer chain 26 is attached to the slider 22.
A portion a is fixed so that the slider 22 can slide on the guide rail 21 under the drive of the transfer chain 26.

[0019] It is also possible to provide not only one but also two or more holding devices 20a per guide rail 21 in an appropriate number so that they can reciprocate. In addition, when providing a plurality of holding devices, it is also possible to provide two reciprocating systems of guide rails 21, as described later, so that each holding device unit 20a moves cyclically. Further, the drive of this transfer chain 26 is transmitted via a suitable relay pulley 27 by a transfer motor M3.

Further, the pressing arm 23 and slider 22, which are the main members of the holding device 20, will be described in detail. First, the pressing arm 23 is provided with a connecting pinch 40 that rotatably supports the end attachment 25a of the cylinder rod 25 in the pressing cylinder 24 at one end of a long plate having a rectangular cross section, for example. A rotation shaft 41 is located at a position slightly moved from the connecting pinch 40 to the other end side.
It has a configuration in which an operating piece 42 that directly contacts the sawn material A is provided on the lower surface of the other end. The action piece 42 is provided with a plurality of angular or tooth-shaped protrusions in order to securely hold the sawn material A.

[0021] Furthermore, the number of working pieces 42 is not limited to one, but it is also possible to provide a plurality of them. In particular, in the case of double sawing as shown in FIG.
It is necessary to provide 2. In this case, the working piece 42 located at the upper side in FIG. 6 functions to maintain the fixed scoring line L1, so it may be in a fixed state, but the working piece 42 located at the lower side in FIG. 6 is for maintaining the movable scoring line L2. Therefore, it is necessary to configure the movable sawing line L2 to be able to vary its operating position in response to the movable sawing line L2 which varies depending on the difference in sawing width. In this case, since the height of action of the upper action piece 42 in FIG. 6 and the lower action piece 42 in FIG. The pressing arm 23 is configured by a link mechanism, etc.
It is necessary to ensure appropriate pressing against the sawn material A.

Further, the slider 22 has a rail holder 45 at its lower part that directly engages with the guide rail 21, and a slider base 46 is disposed on the upper surface of the rail holder 45.
A holding bracket 47 for holding the pressing cylinder 24 in a swinging state is provided below from the side lower surface of the slider base 46, and a holding bracket 47 is provided on the upper surface of the slider base 46 via a suitable support member so as to sandwich the pressing arm 23 therebetween. Pillow blocks 48 are provided and made up of these. Note that the rotation shaft 41 of the pressing arm 23 fits into this pillow block 48 .

Next, the sorting device 30 will be explained. The sorting device 30 has rotating shafts 3 on the sides of the terminal end of the forward material feeding line 14 and the starting end of the backward material feeding line 15, respectively.
1, and rotates to move in and out between the feed rollers 13 with this rotating shaft 31 as a rotational fulcrum, and transports the sawn material A in a direction perpendicular to the traveling direction of the sawn material A by a chain drive. The transfer conveyor unit 32 and the feed roller 13
It consists of a sorting unit 34 having a sorting piece 33 that goes in and out of the space and directly sorts sawn material A into product material A1, return material A2, waste material a, etc.

Next, another embodiment of the sorting device 1 for a sawmill according to the present invention constructed as described above will be described. That is, this device is a single holding device 20a as shown in FIG.
A plurality of units are installed and these are circulated. In FIG. 7, the structure of the single holding device 20a is slightly changed from that of the previous embodiment, but this was done because it is necessary to circulate the pressing arms 23 of the single holding device 20a so that they do not come into contact with each other during movement. Specifically, a bending fulcrum 28 is provided near the center of the pressing arm 23, and the pressing arm 23 is bent at this bending fulcrum 28. By doing this, the pressing arm 23
It is possible to change the operating position of the operating piece 42 at the tip, adjust the pressing force, and avoid contact between the pressing arms 23 that pass each other.

[0025] Also, the single holding device 20 constructed in this manner
As a mechanism for circulating a, an outbound route 21a and a return route 21b are arranged side by side on the side of the material feeding device 3, and a connecting route 21c is provided at the end of each route to form a series of circulation routes. Although not shown, there is a slider 22 in the connection path 21c.
In addition to the structure in which the material is chucked by a clamp, an electromagnet, a vacuum, etc., and moved between the forward and return paths 21a and 21b, a push cylinder 50 for changing the direction of movement is provided from the forward path 21a as shown in FIG. A place where the connection route 21c is transferred, a place where the connection route 21c is transferred to the return route 21b, a place where the return route 21b is transferred to the connection route 21c, and a place where the connection route 21c is transferred to the return route 21b.
Various mechanisms such as a structure for moving between the outbound and return routes 21a and 21b can be adopted by providing them at the locations where they move to 1a and the like.

Furthermore, the embodiment shown in FIG.
is provided above the outbound material feeding line 14. That is, in the embodiment described above, the guide rail 21 is connected to the outward material feeding line 1.
4, the pressing arm 23 was configured to make an oscillating movement, whereas the pressing arm 23 was configured to make a linear movement by directly utilizing the cylinder rod 25 of the pressing cylinder 24. There is. If a plurality of such holding devices 20a are provided, the details of the mechanism will be omitted, but it will be necessary to move them to the side as shown by the imaginary lines in FIG.

Next, the sorting method in the sawmill of the present invention will be explained. The sawn timber A sawn and split by the sawmill main body 2 is held by a holding device unit 20a located immediately after the sawmill main body 2.
It is pressed downward by the pressing arm 23 and is held so as to be sandwiched between it and the feed roller 13. That is, the cylinder rod 25 in the pressing cylinder 24 expands,
The pressing arm 23 is rotated about the rotation shaft 41 as a fulcrum, and the working piece 42 at the tip of the pressing arm 23 is held in contact with the sawn material A. The sawn material A held by the pressing arm 23 in this manner is further transported by the feed roller 13. In synchronization with this, the holding device unit 20a is also moved by the drive of the transfer chain 26, and just before the sawn material A is completely split, the pressing arm 23 of the next holding device unit 20a is activated, and the tip of the holding device unit 20a is moved. The action piece 42 is sawn material A
and hold it. In this way, at two points, sawn material A
By holding this, the cutting line L can be maintained.

Next, in this way, the two holding devices 20a are
The sawn material A held at two points is further transferred and reaches the terminal end of the outward material feeding line 14. At this time, naturally the holding device 20a also moves in synchronization with this movement. Then, the pressing cylinder 24 is contracted, the pressing arm 23 is rotated upward, the pressing by the action piece 42 is released, and it returns on the guide rail 21 to its original position immediately behind the sawmill main body 2.

Next, the sorting piece 33 in the sorting unit 34 as shown in FIG. 9 is raised by the extension of the cylinder, and the transported sawn material A is sorted into product material A1, return material A2, waste material a, etc. Then, the transfer conveyor unit 32 rises, floats each member above the feed roller 13, and transfers the members in a predetermined direction by driving the conveyor chain.

Next, the sorting method in the embodiment shown in FIG. 7 will be explained. That is, in this case, the sawn material A that has been sawn by the sawmill main body 2 and sent out from the sawmill main body 2 is first acted on by the holding device unit 20a located immediately after the sawmill main body 2, and then Hold. Specifically, the pressing arm 23 rotates under the drive of the pressing motor M4,
The contraction of the telescopic cylinder 29 bends the pressing arm 23 inward about the bending fulcrum 28 . Then, the action piece 42 at the tip of the pressing arm 23 is brought into contact with the sawn material A, and
to maintain.

[0031] While the sawn material A is held in this manner, the holding device 20a moves as the sawn material A is transferred. Next, just before the sawn material A is completely sawn by the sawmill main body 2, the pressing arm 2 of the next holding device 20a is
3 comes down, and the working piece 42 at its tip abuts and holds the sawn material A.

[0032] In this way, the two holding devices 20
The sawn material A held at point a is transferred toward the terminal end of the forward material feeding line 14, and is stopped when it reaches the terminal end. Next, the pressing motor M of each holding device unit 20a
4 and the telescopic cylinder 29, the pressing arm 23 rotates diagonally backward from above, and at the same time, the pressing arm 23 in the holding device unit 20a traveling on the outbound path 21a about the bending fulcrum 28 on the way back. Folds up so it doesn't get in the way.

Next, as in the previous embodiment, the sorting device 30
sorting unit 34 and transfer conveyor unit 3 in
Due to the action of 2, the sawn material A becomes the product material A1, the returned material A2,
It is sorted into waste materials a, etc., and transported in a predetermined direction. In the present invention, when undergoing this sorting, the sawing line L of the sawn material A is reliably held at a fixed position by the pressing arm 23 of the holding device 20.

At this time, the holding device 20a is moved from the outgoing route 21a to the connecting route 21c, and then to the return route, returned to the position immediately behind the sawmill main body 2 on the outgoing material feed line 14, and further connected. It is transferred again to the outgoing route via the route 21c, and is added to the sawn material A to be transferred next.

In this way, in the case of this embodiment, instead of reciprocating on the same guide rail 21 as in the previous embodiment, the movement is performed by the outgoing route 21a, the returning route 21b, and the two connecting routes 21c. The holding device 2 moves cyclically along the formed loop path until one stroke is completed.
There is no need to stop the start of 0, and it is possible to deal with the sawn material A that is being fed one after another at high speed.

Next, the sorting method in the embodiment shown in FIG. 9 will be explained. First, the sawn timber A sawn by the sawmill main body 2 is held by being pressed by the cylinder rod 25 of the pressing cylinder 24 in the holding device unit 20a located immediately above the sawmill main body 2. Thereafter, the sawmill main body 2 moves in synchronization with the feed by the feed rollers 13, as in the previous embodiment, and stops when it reaches the terminal end of the forward material feed line 14. Then, the cylinder rod 25 in the pressing cylinder 24 contracts, releases its pressure, is guided by the guide rail 21 to its original position immediately above the sawmill main body 2, and returns above the forward feed line 14, while the feed roller The sawn material A on 13 is sorted into product material A1, return material A2, waste material a, etc. by the action of the sorting unit 34 and the transfer conveyor unit 32, as in the previous embodiment, and is transported in a predetermined direction.

In the above three types of embodiments, since the slit line L is maintained only by pressing by the action piece 42 of the pressing arm 23 in the holding device 20a, the slit line L is maintained as shown in FIG. 10(a). Since the sorting guide plate 35 is not particularly provided, diversification and simplification of sorting methods can be expected;
Of course, it is also possible to use it together with the sorting guide plate 35.

[0038]

[Effects of the Invention] The present invention has the above-described structure, and exhibits the following effects. That is, since the sawing line L is maintained by pressing the pressing arm 23 downward and holding it between the feed roller 13, compared to maintaining the sawing line L using only the conventional sorting guide plate 35, This retention is ensured, and the sawn material A can be transported linearly while the warping, bending, twisting, etc. caused by the internal stress of the sawn material A is corrected, so even if the sorting guide plate 35 is provided. Even if the sawn material A comes into contact with the sorting guide plate 35, the sorting guide plate 35 will not be damaged.

[0039] Furthermore, if a plurality of holding devices 20a are provided and configured to move cyclically with respect to each other, it is possible to handle the sawn material A that is sent one after another, and high-speed operation is possible. .

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a sawmill to which a sorting device of the present invention is applied.

FIG. 2 is a plan view of the same as above.

FIG. 3 is a front view of the same as above.

FIG. 4 is an enlarged side view of the holding device alone.

FIG. 5 is an enlarged side view showing the holding device alone and the sorting device.

FIG. 6 is a skeletal plan view showing a state in which sawn material is sorted and transported in a predetermined direction.

FIG. 7 is a perspective view showing another embodiment of the holding device.

FIG. 8 is a plan view and two partial sectional views showing an example of a connection path when using the same device as above, and two types of partial sectional views with different breaking directions.

FIG. 9 is a front view showing still another embodiment of the holding device.

FIG. 10 is a perspective view showing a conventional method of maintaining a score line and its problems.

[Explanation of symbols]

1 Sorting device 2 Sawmill main body 3 Material feeding device 5 Sawmill 7 Saw blade 8 Transmission member 9 Holding roller 10 Ruler 12 Material feeding frame 13　Feed roller 14 Outbound material feeding line 15 Return material feeding line 20 Holding device 20a Holding device alone 21 Guide rail 21a Outbound route 21b Return route 21c Connection route 22 Slider 23 Pressing arm 24 Pressing cylinder 25 Cylinder rod 25a End attachment 26 Transfer chain 26a Piece 27 Relay pulley 28 Bending fulcrum 29 Telescopic cylinder 30 Sorting device 31 Rotation axis 32 Transfer conveyor unit 33 Sorting pieces 34 Sorting unit 35 Sorting guide board 40 Connection pin 41 Rotation axis 42 Working piece 45 Rail holder 46 Slider base 47 Holding bracket 48 Pillow block 50 Push cylinder A　Sawn wood A1 Product material A2 Return material a Waste material L Grind line L1 Fixed score line L2 Movable sawing line M1 Split motor M2 feed motor M3 Transfer motor M4 Press motor

Claims (3)

[Claims] Claim 1: In a sorting method in which split sawn material is separated at a later stage of a sawmill main body using a sawing line as a boundary, the maintenance of the saw splitting line is carried out by a holding member that moves the sawn material after sawing together with it. A method for sorting in a sawmill, characterized in that the sorting method is carried out by pressing down with a sawmill. 2. In a sorting device that separates the sawn material at the latter stage of the sawmill main body, the sawn material is separated along the sawing line, and the maintenance of the sawing line is carried out by a pressing arm that moves the sawn material together with the sawn material. A sorting device for a sawmill, characterized in that the sorting is done by pressing down. 3. The sorting device for a lumber machine according to claim 2, wherein a plurality of said pressing arms are provided so as to move cyclically with respect to each other.