JPH0144482B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a plywood unit that winds up the entire amount of veneer, including irregularly shaped narrow veneers produced from the start of cutting raw wood until it reaches a perfect circle. This article relates to a method for winding up a board.

In particular, in the case of a narrow-width veneer cut and discharged using a veneer lace, the discharge interval at the early stage of cutting is not constant.
- As shown in Publication No. 10410, the distance between each veneer is reduced, and then the direction of movement of the veneers is controlled on the back of the veneers packed in this way, and a thread, etc., is wound on a reel. Even if you try to wind each veneer onto the reel in a continuous state by unwinding the wire and rotating the reel, the rotation of the reel will be interrupted each time a veneer arrives, and the winding diameter will be too small. The larger the reel (including the wound veneer), the more difficult it is to start and stop the reel, which may cause the veneers to become too close together, causing them to become heavy, turning diagonally, or widening the gap. There was a serious drawback that smooth winding was impossible. In addition, the cutting speed of veneer lace reaches a maximum of 200 m/min, and having to rotate the reel intermittently in synchronization with the conveying speed each time the veneer is delivered increases the size of the drive mechanism and complicates the configuration. Implementation was extremely difficult in practice.

The present invention has been made by focusing on the above points,
The purpose of this is to closely close the gaps between the narrow veneers that are discharged at the beginning of cutting the raw wood, and to assemble them into a continuous group of veneers before starting winding. This eliminates the inconvenience of having to drive the winding device intermittently every time the wood arrives, and ensures smooth winding.Also, once the raw wood has become a perfect circle and the veneer is connected in a band shape, it can be rolled up continuously. An object of the present invention is to provide a method and device for winding a plywood veneer that can be controlled so that the winding is carried out according to the law.

The method for winding up plywood veneers according to the present invention is to arrange small width veneers cut with a veneer lace and discharged in a discontinuous manner by switching the path of the veneers, so that the veneers are arranged in two stages, upper and lower, and the veneers are intermittently rolled. By conveying the veneers, the veneers are closely spaced and guided to a collection conveyor where they are assembled into a continuous group of veneers, and when the group of veneers reaches a predetermined amount on either of the collection conveyors. , the path of the veneers that are subsequently being conveyed is switched to one of the other vacant collection conveyors, and the veneers are continuously assembled in the same manner as above, and during this time, the veneers are placed on the collection conveyor when the veneers reach a predetermined amount. The veneers are continuously fed to the winding device, and the wire rod is fed from the back side of the assembled veneers while being wound up. This is done alternately each time.

Next, an example of the method will be described. In Fig. 1, 2 is a carry-out conveyor installed on the carry-out side of the veneer lace 1, and 3 is an open/close conveyor that discards scrap veneer S' whose dimension in the fiber direction is less than a predetermined size to a lower scrap conveyor 4. In preparation for the middle of the conveyor 2, it is swung up and down to the position indicated by the broken line. Reference numeral 5 denotes a cutting and sorting mechanism, in which a pair of upper and lower rollers 6, 6a that clamp and convey the veneer S cut from the log A with the veneer race 1 is moved in the direction of the arrow by an appropriate drive source (not shown) such as a motor. drive to. The rollers 6, 6a
Near the exit on the veneer unloading side (right side in the figure), there are two rollers 6, 6 with their cutting edges facing in the opposite direction to the conveying direction.
Each time the cutting blade 7, which reciprocates within the opposing distance a, rotates in one direction, one of the rollers 6
Or it is prepared so as to come into contact with 6a. The reciprocating movement of the cutting blade 7 is achieved by, for example, an arm (not shown) attached to the shaft 8.
A reciprocating device 9 such as a cylinder is connected to perform the operation.

The collection conveyors 10, 10a are provided in upper and lower stages on the discharge side in relation to the cutting blade 7.

The cutting and sorting mechanism 5 may be a publicly available device, and instead of the device capable of simultaneously cutting and sorting, for example, as shown in FIG. It consists of a rotary type cutting mechanism 5a consisting of a rotary type cutting mechanism 5a, and an oscillating conveyor 5b arranged at the connection part of the collection conveyors 10, 10a, and when the cutting mechanism 5a performs the cutting operation, the cut end of the veneer S is brought to the vicinity of the tip of the oscillating conveyor 5b. It is also possible to use a cutting and sorting mechanism 5 that displaces the swinging conveyor 5b to the position shown by the broken line when the veneer S reaches the position and alternately switches the conveying direction of the veneer S.

Further, intermittent drive devices 13, 13a such as clutch brakes are connected to each of the collecting conveyors 10, 10a to enable intermittent rotation. 14 is a motor.

The motor 14 does not necessarily need to be provided separately as shown in the figure, since the drive source of the cutting and sorting mechanism 5 described above may be used. 15 is a winding conveyor connected to the discharge side of the lower gathering conveyor 10a; 16 is a touch roller forming a winding device 17; and a shaft 15b of the winding conveyor 15.
and is connected by chain 18. 19 is a conveyor 15 that takes up the veneer S on the upper collecting conveyor 10.
It is configured to move downward to the position shown by the broken line on a guide conveyor for upward transfer.

Moreover, the winding conveyor 15 and the touch roller 1
6 is attached so as to be able to swing up and down using the shaft 15a of the winding conveyor 15 as a fulcrum, and furthermore, the winding conveyor 15 and the touch roller 16 are connected to a weight 21 via a wire 20 so that they are always urged upward. Be suspended. A reel 22 that is rotated by the rotation of the touch roller 16 is removably disposed on the touch roller 16, and the winding device 17 is substantially operated by the reel 22 and the touch roller 16. is configured. Therefore, the reel 2
2, the veneer S is wound up as shown in the figure, and as the diameter of the wound veneer (hereinafter referred to as rolled veneer Sa) increases, the touch roller 16 and the winding conveyor 15 move downwards with the shaft 15a as a fulcrum. It is something that moves.

Furthermore, a winding conveyor 15 and a collection conveyor 10,1
As will be described later, by rotating in conjunction with 0a, the veneer group S... When assembling, the assembling conveyors 10, 10a are attached to the shaft 1 of the winding conveyor 15 in order to be able to rotate independently of the winding conveyor 15.
5a and the shaft 23 of each collecting conveyor 10, 10a are connected by power interrupters 24, 24a such as clutches. 25 is a motor that drives the winding device 17.

Reference numerals 26 and 26a indicate a limit switch or a fullness detector consisting of a phototube, etc., which detects when a predetermined amount of veneers S assembled on the collecting conveyors 10 and 10a have been reached. The conveyed amount of S is converted into pulses by a device such as a transducer (not shown) connected to the collecting conveyors 10 and 10a, and this pulse is integrated by a counter etc., and when the predetermined amount is integrated, it is detected that the predetermined amount has been reached. Any suitable means may be used to transmit the signal.

The line - is the position on which the predetermined amount detectors 26a, 26a are arranged as described above to detect that the veneer S has reached a predetermined amount, and also to stop the rearmost portion of the veneer being wound. This indicates the position, so that the leading edge of the next assembled veneer group S...S can be successively combined and wound up. As a control for ensuring that the rearmost end of the veneer S being wound up stops near the -, the assembled veneer group S
... S can be sent out a distance equal to the length of the collection conveyor 10, 10a, so for example, although not shown, a transducer may be connected to the touch roller 16, and a pulse will be emitted as it is wound up, and the collection conveyor 10, When the set value of the counter set corresponding to the length of 10a is reached, the winding device 1
7 is controlled so as to stop the winding.

Reference numeral 27 indicates a bobbin disposed at the bottom of the touch roller 16, and a wire 28 such as thread or piano wire is wound around the bobbin 27, and its tip is touched through the guide ring and the back surface of the veneer S. It is wound around the roller 16 several times and held so that it does not loosen, or is fixed with tape or the like.

In addition, 29 is a reel deck, 30 is a reel transfer path,
31 is an empty reel transfer path, 32 is an unwinding device for the spool Sa, 33 is a conveyor for transporting the rewound veneer Sb to the next process, and 34 is a bobbin for wire collection. Reference numeral 35 denotes a single plate detector such as a limit switch and a phototube placed in front of the cutting and sorting mechanism 5.The control mechanism will be described below along with the operation of the present invention.

That is, as shown in FIG. 1, when the veneer S cut with the veneer lace 1 at the initial stage of cutting is carried out on the carry-out conveyor 2 and its tip is detected by the veneer detector 35, the detection signal is The intermittent drive device 13a is applied to the conveyance control circuit 36, and after a certain period of time has elapsed, that is, when the leading end of the veneer S reaches the starting end of either the upper or lower collecting conveyor 10, 10a, for example, the lower collecting conveyor 10a. In response, the rotation of the conveyor 10a is started, and when the end portion of the veneer S has passed through the veneer detector 35, the rotation of the gathering conveyor 10a is stopped after a certain period of time as described above. By repeating this process one after another, the intervals between the veneers S are narrowed, and a continuous group of veneers S...S is assembled.

By this integrated control, the veneer S is transferred to the conveyor 10a.
When a predetermined amount has been reached, the predetermined amount detector 26a detects the leading edge of a large number of veneers S... The veneer S rotates from the roller 6 side toward the lower roller 6a, is cut during conveyance of the veneer S, and the path of the veneer S that is subsequently cut and conveyed is switched to the collecting conveyor 10 on the upper stage. On the other hand, at the same time as the cutting, the signal from the cutting and sorting controller 37 is applied to the veneer conveyance control circuit 36 and the collecting conveyor 1
The rotation form of 0 and 10a is controlled alternately.

That is, the upper collecting conveyor 10 is controlled to be able to be driven intermittently every time a veneer S arrives, and the intermittent drive device 13a connected to the lower collecting conveyor 10a is de-energized. While the veneers S are assembled on the upper assembly conveyor 10, there is an intermediary between the winding device 17 and the assembly conveyors 10, 10a, that is, between the shaft 15a of the winding conveyor 15 and the shaft 23 of the lower assembly conveyor 10a. The power interrupter 24a is connected, and the motor 25 is started in a buffer manner to wind up the veneer S together with the wire rod 28.

This control operation is performed when the veneer S is detected by the detector 26 or 26a on either the upper or lower collecting conveyor 10, 10a.
This is done alternately each time it is detected.

Furthermore, the veneer S assembled on the upper assembly conveyor 10
When winding up, the guide conveyor 19 is moved downward toward the winding conveyor 15, and the power interrupter 24 is connected.

The veneer Sa, which has been wound as described above, is transferred to the unwinding position of the reel deck 29, rewound by the unwinding device 32, and inserted into a continuous dryer or the like.

Also, when inserting into the roll dryer, the veneer S is inserted in the direction of the fibers, so the collection conveyors 10, 10
When the length a is designed to be approximately the same width as the veneer insertion inlet of the rolled ear, and the veneer groups S...S assembled by the collecting conveyors 10 and 10a are wound alternately in upper and lower stages, there may be a slight gap. In other words, it is effective to roll up the assembled veneer groups S...S as one unit with a fixed interval between them, since it is possible to insert each veneer group S...S into the roll dryer all at once.

In addition, cutting with veneer race 1 progresses and log A
If it becomes a perfect circle, it becomes a band-shaped veneer (not shown), so the signal circuit of the detectors 26, 26a is cut off, and the power interrupter 2 on the side where the band-shaped veneer is being conveyed is
4 or 24a are connected, and the winding device 17, the winding conveyor 15, and the collection conveyor 1 of either the upper or lower stage are connected.
0 and 10a so that winding can be performed in the usual manner.

FIG. 3 shows a sized clipper 38 provided in front of the cutting and sorting mechanism 5, which has the same structure as the cutting and sorting mechanism 5, and which uses a signal from the cutting position detector 39 to cut the veneer S. The veneers Sb formed into a substantially rectangular shape by cutting out the defective parts on the front and rear sides may be assembled by the gathering conveyors 10, 10a, and then wound up.

Further, FIG. 5 shows another embodiment relating to the relationship between the cutting and sorting mechanism 5 and the two-stage gathering conveyors 10, 10a, in which a sticking conveyor 42 is placed immediately after the cutting mechanism 5a.
(substantially the sorting mechanism 5b) is constructed with an inclination so as to rise toward the discharge side, and two-stage collection conveyors 10, 10a are connected to the conveyor 42.
Place. The top surface of the veneer S carried out on the carry-out conveyor 2 is stuck by the sticking conveyor 42, and the veneer S is passed to one of the upper and lower collecting conveyors until it is full, but for example, it is delivered to the upper collecting conveyor 10. In this case, the sticking release bar 43 provided in the middle of the sticking conveyor 42 is moved from the position shown by the broken line to the position shown by the solid line, and 44 is a detector such as a phototube that detects in advance whether or not the veneer S has arrived. Then, the conveyance amount of the veneer S is added to the integration control circuit 45, and when the collecting conveyor 10 has accumulated the veneer S by a predetermined amount, the cutting mechanism 5a is operated to perform cutting. Meanwhile, from the sticking conveyor 42 to the upper gathering conveyor 1
The veneer S delivered to the veneer 0 is detected by a detector 46 for intermittently controlling the intermittent drive device 13, and assembled in the same manner as described above. Therefore, when a predetermined amount of veneers S are assembled on the upper assembly conveyor 10, the pricking release bar 43 rotates to the position indicated by the broken line in order to transfer them to the lower assembly conveyor 10a, and the veneer S is moved just before and after the cut end of the veneer S. At this point, the path of the veneer S is switched from the upper stage to the lower stage collecting conveyor 10a.

47 is a controller for the stick release bar 43, 43a
is a sticking release bar that releases the sticking in order to transfer the veneer S to the upper collecting conveyor 10.

Figure 4 shows that logs A are cut thickly as veneer S for the core board of plywood until they become a perfect circle.
10a, and when it becomes a perfect circle, a winding device 4 winds up the strip-shaped veneer Sc to be thinly cut when thinly cutting it for front and back veneers.
This shows an embodiment in which a passage switching conveyor 41 is provided separately, and a single plate single passage is switched by a passage switching conveyor 41. In addition, since the veneer S used for the core plate is usually divided into left and right halves by inserting a veneer lace 1 in the middle, the collecting conveyors 10 and 10a are arranged in parallel in two rows on the left and right, and the left and right sections are separated from each other on the unloading side. The winding devices 17a and 17b are arranged in two rows on the left and right by shifting back and forth.

As explained above, in the present invention, the veneers are individually assembled on the upper and lower two stages of collection conveyor, and the veneers are closely spaced and made into a continuous shape before being rolled up. Since the reel is not driven intermittently every time it arrives at the winding device, stable winding can be achieved without the veneer becoming heavy or shifting.

Also, while the veneers being cut one after another are assembled on one of the collecting conveyors, the other collecting conveyor is connected to the winding device via a power interrupter, so that the collecting conveyor and the winding device are operated synchronously. Since the veneer is driven by the veneer, the assembled veneers can be wound smoothly without being misaligned, and the veneers can be processed efficiently. Naturally, it is possible to achieve significant labor savings, and since there is no need to manually handle the veneers, the factors that cause damage to the veneers and lower yields are also eliminated.

[Brief explanation of drawings]

The drawings show an example of the embodiment of the present invention, FIG. 1 is an overall side explanatory view, FIG. 2 is a side explanatory view of another embodiment of the cutting and sorting mechanism in the same, and FIG. 3 is a cutting of a sized clipper. Fig. 4 is a side view of the embodiment provided in front of the sorting mechanism, Fig. 4 is a side view of the whole with other embodiments added, and Fig. 5 is related to the relationship between the cutting and sorting mechanism and the two-stage collection conveyor. Other Examples. A... Log, S... Veneer, Sa... Rolled ball, 1...
...Veneer lace, 5...Cutting and sorting mechanism, 6,6
a... Roller, 7... Cutting blade, 10, 10a...
... Collection conveyor, 13, 13a ... Intermittent drive device, 14 ... Motor, 15 ... Winding conveyor,
16... Touch roller, 17... Winding device, 1
8...Chain, 19...Guidance conveyor, 22...
... Reel, 23 ... Shaft, 24, 24a ... Power interrupter, 25 ... Motor, 26, 26a ... Predetermined amount detector, 27 ... Bobbin, 28 ... Wire, 29
... Reel deck, 30 ... Reel transfer path, 31
. . . Empty reel transfer path, 32 . . . Unwinding device for rolled ball Sa, 33 . ...cutting, sorting controller, 38...
Sizeable clipper, 39... Cutting position detector.

Claims (1)

[Claims] 1 Narrow-width veneers cut with veneer lace and discharged in a discontinuous manner are arranged in two levels, upper and lower, by switching their paths, and the veneers are conveyed intermittently to closely space the veneers. and guide them to a collection conveyor where they are assembled into continuous veneer groups,
When the group of assembled veneers reaches a predetermined amount on either one of the collection conveyors, the path for the veneers that are subsequently conveyed is switched to one of the other empty collection conveyors, and the veneers are collected in the same manner as above. The veneers on the collection conveyor are assembled in a continuous manner and the veneers have reached a predetermined amount during this time, and are continuously fed to the winding device, and wire rods are fed from the back side of the assembled veneers and wound up. A method for winding up plywood veneers, characterized in that the winding is performed alternately each time a predetermined amount of veneer groups are assembled on the gathering conveyor.