JPH0416416A - Apparatus for supplying log - Google Patents

Abstract

PURPOSE:To make a speed of a removing body variable by installing a driving speed variable mechanism of the removing body on a driving transmission mechanism or a driver. CONSTITUTION:A slasher chain 11 having an endless body for carrying a log A, that is, a removably supported attachment 17, is provided to be driven by a motor M1. In addition a removing body 20 is provided to that it slightly protrudes from a carrying track surface. The removing body 20 is constituted of a chain 21, a guide plate 23 and a protruding piece 21A and driven by an independent motor M2. In this case, the body 20 can be variable in speed by utilizing the rotation of the slasher chain 11 instead of the independent motor M2. This constitution makes a driving speed of the removing body variable so that the speed can be varied according to a diameter of the log.

Description

[Detailed Description of the Invention] (Object of the Invention) (Industrial Application Field) The present invention relates to a device for conveying logs in a sawmill or the like, and in particular, the present invention relates to a device for conveying logs in a sawmill or the like. This relates to a log supply device that feeds logs in order for each book.

<Background of the invention> For example, logs are transported from a stockyard to an appropriate processing device,
For example, the trees are transferred to a sawing device or a bark removing device, but in order to do this, each tree must be fed in an orderly manner to the processing device that is the subsequent process. As shown in the figure, a slasher chain 11' equipped with a support attachment 17' for log material A is provided, and a supply device 1' for log material A is used, which is arranged so that its conveying action track rises in the conveying direction. The logs A are supported one by one by this support attachment 17' and transported to the next process.

However, in reality, when the logs A are supplied to this feeding device, a plurality of logs A are roughly dropped at once, and the support attachment takes them out one by one and transports them. However, in reality, if space allowed, more than one book would be supported by a single support attachment and transported and supplied at once, which would interfere with subsequent processes. As a solution to this problem, the idea was that if the logs were actively transferred while being transported, the surplus logs would be rolled back, which would allow for accurate feeding of each book. It was reached. Based on this idea, the present inventor has already proposed an apparatus in which an endless conveying body equipped with a log support attachment is arranged such that its conveying orbit rises in the conveying direction. To...
We have developed a log supply device characterized in that one or more driven endless expelling bodies or expelling rotating bodies are provided so that their upper parts protrude above the conveyance track, and have already filed an application. (See Japanese Patent Application No. 2-5701 and No. 2-5702) However, such log supply devices do not have the drive of an endless body or a rotating body of rejection. Since the speed is constant, when the diameter of the log increases, the rotational drive of the log received from the endless expelling body or the expelling rotating body becomes relatively small, and the rotational speed of the log decreases. As a result, it was not possible to obtain enough drive to lift and remove logs, and a sufficient effect could not always be expected for logs with large diameters.

Technical matters for which development was attempted> The present invention was made in view of this background, and
This is an attempt to improve a log supply device so that the drive speed of the expulsion member can be changed depending on the diameter of the log.

(Structure of the Invention) Means for Achieving the Object> That is, the log supply device according to the present application includes an endless conveyor body equipped with a log support attachment arranged such that its conveyance track ascends in the conveyance direction. The drive transmission [! In the apparatus, the drive transmission mechanism or the drive device is provided with one or more evacuation bodies linked to the drive device so that the upper part thereof projects upwardly from the conveyance track, the drive transmission mechanism or the drive device having the The present invention is characterized by having a mechanism for varying the driving speed of the expelling member, thereby achieving the above object.

<Operation of the Invention> In the present invention, the log material is rotated by acting on the log material supported by the bearing attachment and supplied thereto by the exclusion action body. Due to this rotation, among the multiple logs fed into the bearing attachment, the agile logs float up from the conveying surface, and eventually climb over the bearing attachment and are swung back, eventually becoming one piece. Each bearing attachment now supports one log.

Furthermore, by having a variable mechanism for driving the expulsion effecting body, the driving speed of the expulsion effecting body can be adjusted as appropriate depending on the diameter of the log material.

<Examples> The present invention will be specifically described below based on illustrated examples. Reference numeral 1 denotes a log supply device according to the present invention, which includes, for example, a stock deck 3 for accumulating a large number of logs, and a stock deck 3 for feeding the logs A to the next process, such as a sawing device or a bark removing device. and the transport conveyor 4. Of course, this log material supply device I may be in a state in which the stock deck 3 or the like is not attached, and the log material A is directly received by, for example, a forklift. The log supply device 1 will be described below. Reference numeral 10 is a frame, and above the frame 10 is provided a slab shear chain 11 which is an endless conveying body. Specifically, as an example, the slab shear chain 11 is constituted by two chains arranged opposite each other on the left and right sides. The slab shear chain 11 has an upper surface of its traveling track serving as a conveyance track for the log material A, and this conveyance track is set in the [64 state] so as to rise in the conveyance direction. The drive is provided by a drive sprocket 13 provided on a drive shaft 12 provided on the upper end side of the sliding saw chain 11.
Rotation from a drive motor M of the slasher chain 11 is separately transmitted to the drive shaft 12 to a driven sprocket 14 by a drive chain 16.

Further, the slasher chain 11 is provided with weir plate-shaped support attachments 17 at regular intervals,
The support attachment 17 is the left and right slasher chain 1
1 are connected together. As a characteristic feature of the present invention, such a slasher chain 11 is further provided with an exclusion effecting body 20 that projects somewhat from its conveying track surface. This one - for example chain 21
This chain 21 is provided with a plurality of protrusions 21A in the form of attachments, and this chain 21 is attached to the slasher chain 11.
A pair of left and right panels are provided so that they are placed on both sides of the board. The embodiment shown in Fig. 1.2.4.6 is based on this chain 2.
1 is stretched so as to draw an elliptical orbit between the drive sprocket 22A and the turn sprocket 22B, and is provided so that the upper surface of the running orbit projects above the slasher chain 11, which is the endless transport body. It will be done. A guide plate 23 is provided on the lower surface of the upper running track of the chain 21, which is the removal action body 20, so that it can sufficiently support the load even when it is applied. If the drive motor M2 is provided separately from the drive motor M of the slasher chain 11 to drive the chain 21, the drive chain 24 is driven from this drive motor M2 to drive the drive chain 22A. The signal is configured to be transmitted to the shaft 22a. Of course, to drive this chain 21, the rotation of the slasher chain 11 may be used without using a separate drive motor M2. That is, as shown in FIG. The end of the shaft 15 is extended, and a relay gear 25 is provided there.
A reverse gear 26 is provided on the side of the first drive shaft 22a so that the drive shaft 22a is rotated in a direction opposite to the drive direction of the slasher chain 11, which is an endless conveyor chain. When using the rotation of the slasher chain 11 in this way, the reversing mechanism for running in the opposite direction is not only a mechanism using gears, but also a reversing mechanism by, for example, suspending the chain or the like in a so-called sagging state. Furthermore, this removal action body 20 does not necessarily need to use a chain 21, for example, a fifth
As shown in Figure (a), a protruding piece 27A may be provided on the twisted belt 27.Furthermore, the suspension method of the exclusion effecting body 2o is simply that of the drive sprocket 22A and turn sprocket 7) 22B at both ends. As shown in FIG. 5(b), not only the elliptical orbit stretched between the two, but also the middle part is actively guided downward by the guide sprocket 28, and the upper surface of the transport orbit of the slasher chain 11 is provided with a drive sprocket. 22A and turn sprocket 2
It goes without saying that the portion 2B may be configured to protrude.

Furthermore, such an exclusion effecting body 2o is not only provided in one X unit arranged oppositely on the left and right, but also two units are provided in series per one slasher chain 11 as shown in FIG. 6(a), or as shown in FIG. As shown in (b), a plurality of units of the slasher chain 11 equipped with the exclusion action body 20 may be arranged in series. Although the above-mentioned expulsion member 20 is of a so-called endless type in which a chain 21 is used, it is also possible to use a disc-shaped or roller-type member as shown in FIG. 8, for example. That is, the removing rotary body 20a is provided to the slasher chain 11 so as to protrude somewhat from the conveying track surface thereof. The exclusion rotary bodies 20a are, for example, members having disc-shaped concave and convex teeth 2<b> around the circumference, and are provided in pairs on the left and right sides of the drive shaft 22 supported by the frame 10 . Rotation is transmitted from the drive motor M2 to the expelling rotating body 20a via the drive chain 24. Although the exclusion action body 20 can take various forms as described above, such exclusion action body 20 is a drive motor that is a drive transmission mechanism or a drive device consisting of a drive chain 24, various sprockets, etc. By providing a variable drive speed mechanism for M2, the drive speed can be changed. That is, as an example of providing a variable drive speed mechanism in the drive transmission mechanism, as shown in FIGS. 1 to 3, a continuously variable transmission unit 29 is interposed on the output shaft of the drive motor M2, and the output shaft 29a and the drive shaft are connected to each other. 22a directly or via a transmission member such as a belt. The continuously variable transmission unit 29 may be any suitable one, such as a belt transmission mechanism with variable pulley diameter or a planetary gear mechanism, which is a type of differential transmission type. In addition, the drive upper M2 which is a stupid drive device using such a continuously variable transmission unit 29
The drive speed of the exclusion effecting body 20 may be changed by applying an induction motor equipped with a speed controller as a variable drive speed mechanism.

In addition, to briefly explain the stock deck 3 and the conveyor 4, which are peripheral equipment provided in connection with such a log supply device 1, the stock deck 3 is configured to run on the top surface of the stock deck frame 30. A feed chain 31 is provided, and a chute 32 is provided at the front end of the feed chain 31 to connect it to the log supply device 1.
will be established. Of course, this feed chain 31 may be always provided on the upper surface of the stock deck frame 30, or the unit of the feed chain 31 may be configured to be able to move up and down, so that the logs A accumulated on the stock deck 3 can be moved as needed. Depending on the situation, it may also be possible to transport the container in a floating state. The conveyor 4 faces near the upper end of the log supply device 1, and is extended to the next processing step for the logs A. That is, a conveyor chain 41 for supporting and conveying the log material A runs on the upper surface of the conveyor frame 40, and a trough 42 for guiding the log material A is provided on the side of the conveyor chain 41.

The concrete structure of the log supply device according to the present invention is as described above, and operates as follows to supply the logs A one by one in an orderly manner. First, log supply device 1
When the logs A are sequentially supplied from the stock deck 3 while the slasher chain 11 is being driven and running, the logs are pushed out by the support attachment 17 of the slasher chain 11 and move upward. go. At this time, log material A from stock deck 3
Since the supply of is reduced by a fairly rough operation, −
Not necessarily one log A is loaded per base bearing attachment, but sometimes two or more logs A are loaded at the same time. In such a situation, for example, two logs A (if it is necessary to distinguish between multiple logs, indicate the upper log A).
1, the lower log is indicated as A2), as shown in FIG. 7(a), the protruding piece 21A of the exclusion action body 2o first comes into contact with the lower surface of the log AI on the way, as shown in FIG. 7(a). , the upper log material A is rotated clockwise in the figure by the removal effecting body 2o running in the opposite direction to the supply direction of the log materials at the contact position. And the log material A above this.

The rotation is transmitted to the lower log A2 in contact with it, causing it to rotate in the opposite direction, that is, in a counterclockwise direction. This rotation is a rotation that causes the lower log material A2 to overcome the support attachment 17 that supports it, and as a result, the lower log material A2 overcomes the support attachment 17 and falls downward, and the next support It is conveyed again by the attachment 17, or if another log A is already present there, it stays above it, or it falls over it and falls downwards, and is then pushed up by the subsequent bearing attachment I7. I'll wait for that. In addition, in the case of two or more logs, for example three, as shown in Figure 7(b), logs A1 to Aδ
The rotating directions of the logs A are set in the order of reverse, forward, and reverse to the running direction of the exclusion effecting body 20, and the logs A are rotated in the direction that is more likely to float, and then the logs A are sequentially dropped downward. will be done. Further, when the diameter of the log material A is large, the variable drive speed mechanism is adjusted as appropriate to increase the drive speed of the exclusion action body 20. As a result, the log material A receives further drive from the removal action body 20 and falls downward. In order to make the logs fall more easily, the tilting angle of the log supply device 1 may be adjusted according to the diameter of the logs. If the objects are transported all at once, in the case of an embodiment in which a plurality of exclusion bodies 20 are provided as in the embodiment shown in FIG. Even more reliable exclusion can be achieved by providing multiple stages in series. In addition, if only one log material A is fed to the position where the exclusion effecting body 20 is provided, the direction of rotation thereof is not in the direction of getting over the support attachment 17, so - in the case of only one log material A There is no fear that this will be excluded.

(Effects of the Invention) In the present invention, since the drive transmission mechanism or the drive device is provided with a variable mechanism for the drive speed of the exclusion action body 20, the drive speed of the exclusion action body 20 can be adjusted appropriately according to the diameter of the log material. By adjusting, for example, even logs with a large diameter can be given a sufficient rotational speed to fall downward.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the log supply device of the present invention, and FIG.
3 is a plan view of the same as above, FIG. 4 is a perspective view showing another driving method of the endless exclusion body, FIG. 5 is a side view of another embodiment of the endless exclusion body, and FIG. The figures are skeletal side views showing various embodiments in which a plurality of endless exclusion bodies are provided, and FIG. 7 is an explanatory diagram showing a state in which surplus logs are removed when multiple logs are fed. FIG. 8 is a side view showing another embodiment in which the structure of the exclusion effecting body is different, and FIG. 9 is a skeletal side view showing problems with the conventional supply device. 1; 3; 4; 10; 11; 12: 13; 14; 15; 16; Driven sprocket Driven shaft Drive chain support attachment Elimination action body; Elimination rotating body; Uneven tooth chain; Protrusion piece; Drive sprocket; Turn sprocket; Drive shaft guide plate 24 Ni drive chain 25; Relay gear 26; Reverse gear 27; Coughed belt 27A; Projection piece 28; Guide sprocket 29; Continuously variable transmission unit 29a; Output shaft 30: Straight deck frame 31; Feed chain 32; Chute 40; Conveyor chain 41; Conveyor chain 42; Trough A, A4, Az, Aai logs Material Ml, M2 i drive motor (C7) t'/A

Claims (1)

[Claims] An endless conveying body equipped with a log support attachment is arranged such that its conveying action track rises in the conveying direction, and the conveying action track is linked with a drive device via a drive transmission mechanism in the middle of the conveying action track. In a device in which one or more eliminators are provided with their upper portions projecting upward from the conveyance track, the drive transmission mechanism or the drive device includes a variable drive speed of the eliminators. A log supply device characterized by having a mechanism.