JPS6111764B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention temporarily stores veneers discharged from a veneer lace on a conveyance line, and sequentially takes out the veneers once stored on the conveyance line and transfers them to a veneer clipper. The present invention relates to a multi-stage tray conveyor device for processing veneers.

(Prior art) Conventional tray conveyor equipment for veneer processing usually has 50
Long belt conveyors ranging in length from m to 100 m are stacked in 4 to 6 stages to form a tray conveyor system, and a worker visually identifies which belt conveyor is empty and replaces that conveyor with veneer. Connected to the conveyor on the race side, the veneer discharged from the veneer race is temporarily stored on the conveyor line in synchronization with the cutting speed, and the belt conveyor of any of the above stages with the veneer stored on the conveyor line is It was a tray conveyor device that was connected to the conveyor on the veneer clipper side and was configured to feed the trays while taking them out sequentially in synchronization with the cutting speed of the veneer clipper. Since the board is not always suitable for its length, the process length of 50
Even if the veneer has a short length of less than 100m, for example 20m or 30m, it will always occupy one stage of the long belt conveyor, reducing the overall filling rate to less than half. Not only is there a waste of conveyance power due to long equipment, but with the recent decline in raw wood resources, it has become necessary to cut logs with a small diameter of less than 30 cm using veneer lace. However, the length of the veneer in that case was
For tray conveyors that are long and have a low filling rate, ranging from 50m to 100m, the cutting capacity of the veneer lace in the front stage must be reduced to about half, otherwise the veneer discharged onto the conveyor line will be satisfied. There were serious deficiencies such as the inability to store the veneer lace in the tray conveyor system at the later stage as the diameter of the logs became smaller and the productivity of veneer lace was severely limited by the tray conveyor device in the latter stage.

(Purpose of the Invention) The present invention completely eliminates the defects of the conventional equipment described above, shortens the length of the long equipment, increases the filling rate of veneers, and reduces the consumption of conveying power in the entire process. The object of the present invention is to provide a multi-stage tray conveyor device for processing veneers, which can significantly improve productivity.

(Structure of the Invention) In order to achieve the above object, the present invention temporarily stores the veneers discharged from the veneer lace on the conveyance line, and sequentially takes out the veneers once stored on the conveyance line and supplies them to the veneer clipper. In a multi-stage tray conveyor device, a plurality of stages of conveyors are provided which are divided into front and back and arranged in series on the veneer race side and the clipper side, and each conveyor is configured to be able to be driven independently, and each of the above-mentioned The conveyor is equipped with a variable speed drive mechanism that can be driven in synchronization with the cutting speed of the veneer lace and the cutting speed of the clipper.

(Example) An example of implementation of the present invention will be described with reference to the drawings.
In the multistage tray conveyor device, the veneer 2a discharged from the veneer lace 1 is temporarily stored on the conveyance line, and the veneers 2b once stored on the conveyance line are sequentially taken out and supplied to the veneer clipper 3. Belt conveyors 4a, 4b, 4c, 4d are arranged in series, divided into front and back on the veneer race 1 side and the veneer clipper side, and arranged in multiple stages vertically, and each can be driven independently.
, variable speed drive mechanisms 5a, 5b, 5c, and 5d that can be driven in synchronization with the cutting speed of the veneer lace 1 and the cutting speed of the veneer clipper 3 are separately installed, and each of the belt conveyors 4a, 4b, 4c, and 4d is The belt conveyor 4 is synchronized with the conveyance speed of
veneer 2a being conveyed on a, 4b, 4c, 4d,
2b, and stores the presence or absence of the belt conveyor 4.
The speed change drive mechanisms 5a, 5 each include a synchronous memory circuit that can separately control the speed change drive mechanisms 5a, 5b, 5c, and 5d mounted on the speed change drive mechanisms 5a, 4b, 4c, and 4d.
b, 5c, and 5d, respectively.

The present invention will be described in more detail from its embodiments. First, the veneer 2a cut by the veneer lace 1 is transferred to the conveyors 4a, 4b, 4c, 4d by the carry-out conveyor 7 and the staple conveyor 8. The veneer 2b stored on the conveyance line is safely delivered onto the belt conveyor 4a, 4c of either the upper or lower stage of the preceding stage in synchronization with the cutting speed V1 of the veneer lace 1. In addition, if the veneer 2b stored on the conveyor line is taken out for cutting by the veneer clipper 3 in the later stage on either the belt conveyor 4b or 4d in the upper or lower stage of the later stage, it will be transferred to either the upper or lower stage of the previous stage. The veneer 2a cut in synchronization with the cutting speed V1 of the veneer lace 1 similar to the belt conveyors 4a, 4c is then safely stored on the conveyor line. On the other hand, the series-parallel type belt conveyor 4
Among the conveyors a, 4b, 4c, and 4d, there is a veneer 2b stored on the conveyor line, and the veneers 2b that have been stored are sequentially placed on the belt conveyor 4b, 4d in either the upper or lower stage of the latter stage. Then, the veneer clipper 3 is safely taken out onto the carry-in conveyor 9 in synchronization with the cutting speed V2, and the veneer clipper 3 cuts the veneer 2c into a veneer 2c of a specified width or fixed width, and conveys it to a stacking device or the like in a subsequent cutting process. The veneer processing process is performed using a series of multi-stage tray conveyor devices.

However, the above-mentioned belt conveyors 4a, 4b, 4
c and 4d are divided into front and rear parts on the veneer race 1 side and the clipper side, and are arranged in series and in multiple stages so that each can be driven independently, and the belt conveyors 4a, 4b,
4c and 4d can be driven in synchronization with the cutting speed of the veneer race 1 and the cutting speed of the veneer clipper 3,
Variable speed drive mechanisms 5a, 5b, 5 consisting of a DC motor, an AC variable speed motor, various electromechanical transmissions, etc.
c, 5d are installed separately, and the conveying speed for each driving section of the belt conveyors 4a, 4b, 4c, 4d, that is, either the cutting speed V1 of the veneer lace 1 or the cutting speed V2 of the veneer clipper 3. Detects the transport speed synchronized with the speed of
For example, the belt conveyors 4a, 4b, 4c, 4
Speed detectors 10a, 10b, 1 such as tachogenerators and transducers attached to each of d.
0c, 10d detects the conveying speed each time, and transmits this to the synchronous memory circuits 6a, 6b, 6c, 6d each consisting of a shift register, magnetic memory, etc., and also transfers the conveyance speed to the belt conveyors 4a, 4b (not shown). , 4c, 4d, a single plate detector such as a photoelectric switch or a limit switch is installed on the front conveyor 4a, 4c which is usually the frontmost part, and the detection signal is used to detect the synchronization memory circuit 6.
Belt conveyor 4 by a, 6b, 6c, 6d
veneer 2a, which is conveyed on a, 4b, 4c, 4d,
The presence or absence of veneer 2b is stored for each unit length, for example, every 50 cm, and the memory is stored as shown in FIG. The presence or absence of 2b is determined by the synchronous memory circuit 6.
A, 6b, 6c, and 6d are stored in one unit of memory element 11 in synchronization with the conveyance speed, and for example, if the memory of veneer detection remains in the memory element 11 (indicated by diagonal lines), it is If it is all of them, of course, but even if it is not all of them, if it is one or more, it will send the speed of the speed change drive mechanism 5a, 5b, 5c, 5d as a signal via the memory diode 12 with a single plate, etc. output to the command, and also output the one unit memory element 11
If there is no memory of veneer detection at all, the memory of no veneer is output as a (0) signal to the speed command of the variable speed drive mechanism 5a, 5b, 5c, 5d, and the speed command is ( 1) If the signal is a signal, it can be driven at any time at a conveyance speed synchronized with the cutting speed V2 of the veneer clipper 3, and if the speed command is a (0) signal, it can be driven at a conveyance speed synchronized with the cutting speed V1 of the veneer lace 1. variable speed drive mechanisms 5a, 5 for each drive section, which can be driven at any time.
The speeds of b, 5c, and 5d can be controlled separately.

In addition, the above-mentioned belt conveyors 4a, 4b, 4c,
4d can be driven at any time in synchronization with the cutting speed V1 of the veneer race 1, and when the veneer race 1 has virtually finished its veneer cutting operation, the conveying speed is set to the cutting speed V1 of the veneer race 1. Regardless of the synchronization of Or the above-mentioned series-parallel type belt conveyors 4a, 4b, 4c, 4d
When cutting a large-diameter log such that a veneer 2a with a length exceeding the process length is discharged from the veneer race 1, the veneer cutting operation of the veneer race 1 is stopped each time, and the veneer 2a is cut to a predetermined length. It is also possible to deal with it by cutting it into strips, or by installing a sheet breaker etc. directly in front of the tie pull conveyor 8 etc. and cutting it into a predetermined length. It is.

Further, the veneer lace 1 to which the present invention is applied is removed by the belt conveyor 4a, 4b, 4c, 4 by a large peeling machine.
In the case where the veneers 2a and 2b to be stored in d are discharged in two lines horizontally, it is of course possible to deal with this by arranging the apparatus of the present invention in two lines horizontally.
The number of stages of the belt conveyors 4a, 4b, 4c, and 4d is not limited to a mechanism of only two stages, upper and lower, but may also be configured in a multi-stage structure with three stages, upper, middle, and lower.
Furthermore, the number of stages can be freely configured to have more stages than that, and it goes without saying that neither goes beyond the technical scope of the apparatus of the present invention.

(Effects of the Invention) As described above, the present invention is a multi-stage type in which the veneers discharged from the veneer lace are temporarily stored on the conveyance line, and the veneers once stored on the conveyance line are sequentially taken out and supplied to the veneer clipper. In this tray conveyor device, a plurality of conveyors are provided on the veneer race side and the clipper side, which are divided into front and back and arranged in series, and each conveyor is configured to be able to be driven independently, and each of the conveyors is Since the machine is equipped with a variable-speed drive mechanism that can be driven in synchronization with the cutting speed of the veneer lace and the cutting speed of the clipper, it is no longer necessary to operate the long belt conveyor like the conventional equipment at a low filling rate. There is no needless consumption of conveying power due to long equipment, and there is no significant drop in productivity due to the low filling rate, which would require cutting the veneer lace cutting capacity to about half. Not only can the consumption of conveying power in the entire process be reduced to significantly improve productivity, but also the filling rate of the veneers 2a and 2b can be maintained at a very high level, thereby minimizing the process length per production volume. Therefore, it is economical because it does not require extra equipment or installation space, and instead of manual operation of the tray conveyor device based on visual discrimination by workers, it is possible to automatically operate the tray conveyor device using a synchronous memory circuit. As a result, the overall process efficiency was improved, and there was no occurrence of problems such as clogging or tearing of the veneer due to errors in judgment by workers, which is an extremely significant implementation effect.

[Brief explanation of the drawing]

The figure shows an example of implementation of the present invention,
FIG. 1 is an overall layout diagram, and FIG. 2 is an explanation of the synchronous memory circuit. 1...Plywood lace, 2a, 2b, 2c...Single board, 3...Veneer clipper, 4a, 4b, 4
c, 4d...belt conveyor, 5a, 5b, 5
c, 5d... variable speed drive mechanism, 6a, 6b, 6c,
6d...Synchronous memory circuit.

Claims (1)

[Claims] 1. A multi-stage tray conveyor device in which veneers discharged from a veneer lace are temporarily stored on a conveyance line, and the veneers once stored on the conveyance line are sequentially taken out and supplied to a veneer clipper. In addition to providing multiple stages of conveyors divided into front and back and arranged in series on the veneer lace side and the clipper side,
Each of the conveyors is configured to be able to be driven independently, and each conveyor is individually equipped with a variable speed drive mechanism that can be driven in synchronization with the cutting speed of the veneer lace and the cutting speed of the clipper. Multi-stage tray conveyor device for veneer processing. 2. Conveyed on the conveyor in synchronization with the conveyance speed of each conveyor, which consists of a plurality of conveyors that are arranged in series with the veneer race side and the clipper side divided into front and back, and configured so that each can be driven independently. A multi-stage tray for veneer processing according to claim 1, wherein a synchronous memory circuit is separately installed for storing the presence or absence of a veneer and for controlling a variable speed drive mechanism separately installed on the conveyor. conveyor equipment.