JPH0720788B2 - Veneer single plate multi-type automatic deposition equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an automatic veneer veneer automatic deposition apparatus, and more particularly to a multi-type automatic deposition apparatus having a plurality of deposition stands arranged in series. Conventionally, veneer veneers sent by a conveyor (hereinafter simply referred to as veneers) are automatically and sequentially deposited on the stacking table. There is a multi-type automatic deposition apparatus for depositing specially, for example, Japanese Patent Publication No. 47-23133 and Japanese Patent Publication No. 54-42506.
The deposition apparatus and the like described in Japanese Patent Publication have been successful for the time being. However, all of these automatic deposition devices are equipped with a mechanism for automatically depositing and depositing veneers, that is, a drop deposition mechanism such as a smashing bar or an open / close conveyor.
Each time the drop stacking mechanism makes one reciprocating movement, one veneer is dropped. Therefore, if the distance between the subsequent veneer and the veneer is small, the subsequent veneer will be fed during the reciprocating operation of the drop stacking mechanism, and not only damage to the veneer and the device but also to improve them. Therefore, it caused troubles such as temporarily interrupting the deposition work itself.

The present invention was developed to eliminate these drawbacks,
When the distance between the preceding veneer and the subsequent veneer is narrow, the deposition of the preceding veneer is prohibited, and the preceding veneer is sent to the next deposition table as it is, thereby preventing problems in the deposition apparatus. It aims to streamline the deposition work and improve productivity. That is, in order to achieve the object, the present invention provides another deposition table on the carry-out side and an interval detector on the carry-in side of an automatic deposition apparatus including a conventionally known deposition position detector and a drop deposition mechanism. The drop deposition mechanism is operated in association with the interval detection base and the deposition position detector. Further, since this interval detector detects the interval between the preceding veneer and the subsequent veneer and determines whether or not to start the deposition operation of the preceding veneer, it is natural that the fall deposition is performed. The presence or absence of the following veneer must be detected before the mechanism starts operating. Therefore, the interval detector is located at a position separated from the carry-in side of the depositing device by a distance obtained by multiplying at least the carrying speed of the carrying conveyor and the time required for the reciprocating operation (1 cycle) of the drop stacking mechanism. Need to be installed. The deposition table provided on the carry-out side of the deposition apparatus may be a simple deposition table, not an automatic deposition apparatus that automatically performs the above-described deposition operation, but an automatic deposition apparatus is preferable. Further, a plurality of deposition devices according to the present invention are provided in series, and a discrimination signal for discriminating, for example, a front plate and a back plate is separately associated with the control means,
It is also possible to deposit them separately. Next, an example for carrying out the present invention will be described with reference to the drawings.

1 and 2 both show an embodiment of the multiple automatic deposition apparatus according to the present invention. FIG. 1 is a front view and FIG. 2 is a left side view. Reference numeral 4 in the figure is a conveyer conveyor composed of a pair of left and right needle-like belt conveyers, which pierces the single plate on the intermediate conveyer 5 which communicates with the previous step and conveys it to the deposition apparatus. (See Japanese Patent Publication No. 48-9505) Two automatic veneer stacking apparatuses 1 and 2 are arranged in series on the way of the conveyor 4. The basic structure of the automatic veneer stacking apparatus is the same as that of the conventional apparatus. A stacking table 11 (21) for sequentially stacking veneers and a smashing bar for dropping down veneers arriving on the stacking table are provided. 12 (22), a knock-down bar operating mechanism 12a (22a) such as an air cylinder, and a deposition position detector 14 (24) for detecting the arrival of a single plate on the deposition table. An interval detector 13 that detects the interval between the preceding veneer and the subsequent veneer is provided on the carry-in side of the deposition apparatus 1 located on the carry-in side. The interval detector 13 is a detector that detects the presence or absence of a single plate such as a limit switch or a photoelectric tube switch, like the deposition position detector 14 (24), and is on the way of the conveyor 4 and the conveyor 4. Is provided at a position distant from the smashing bar 12 or more by a distance vt obtained by multiplying the transport speed v of the smashing bar 12 and the time t required for the reciprocating operation (one cycle) of the smashing bar 12. Then, the interval detector 13 is connected to the normally closed contact and the deposition position detector 14
Is connected in series with the normally open contact, and only when the interval detector 13 detects the preceding veneer to be the deposition chip under the condition that the subsequent veneer is not detected, the operating mechanism 12a
To drive the knock-down bar 12. Therefore, even if the stacking position detector 14 detects the preceding veneer to be a stack, if the interval detector 13 detects the subsequent veneer, the actuating mechanism 12a of the blow-off bar does not operate, The preceding veneer is sent to the depositing device 2 on the unloading side and
21 It will fall and accumulate on top. When the stack position detector 14 detects the leading veneer and the interval detector 13 does not detect the trailing veneer, the actuating mechanism 12a operates normally to drop the falling bar 12 and the leading veneer. Plates are deposited, but since the interval detector 13 is provided at the above-mentioned position, the succeeding veneer still comes into contact with the bar 12 after reaching the position of the bar 12 at the end of the lifting operation of the bar 12. There is no trouble. The control means for the actuating mechanism 12a associated with both detectors 13 and 14 is not limited to the control example in this embodiment, and may be a non-contact circuit using an AND circuit. Further, the transport conveyor 4 is the above-mentioned Japanese Patent Publication No. 47-2313.
In the suction type conveyer as described in Japanese Patent Publication No. 3), the hitting down mechanism 12 and 12a as the drop accumulation mechanism is also described in the above Japanese Patent Publication No. 54-42506.
It can be changed to an open / close conveyor in which the transfer conveyor itself is opened to the outside as described in Japanese Patent Publication No. Next, an apparatus in which a plurality of multiple automatic deposition apparatuses according to the present invention are connected,
That is, an embodiment will be described in which the multiple automatic deposition apparatus of the present invention is used as another deposition table provided on the transport side and two or more automatic deposition apparatuses are connected. FIG. 3 is a front view of two multi-type automatic deposition devices connected to each other, and three automatic deposition devices 1, 2 and 3 are provided in series on the transportation conveyor 4. Deposition table 11, 21, 3 in each deposition device
1, down bar 12, 22, 32, down bar operating mechanism 1
The configurations of 2a, 22a, 32a and the deposition position detectors 14, 24, 34 are the same as those of the first embodiment, and when a single plate arrives on the deposition table, it is configured to be dropped and deposited by a knock-down bar. There is. Reference numerals 13 and 23 denote the interval detectors of the automatic deposition apparatus 1 or 2, respectively, both of which are the down-bars 12 of each deposition apparatus.
Further, it is provided at a position separated from the knock-down bar 22 by a distance of vt or more (conveying speed of the conveying conveyor 4 x reciprocating operation time of the operating mechanisms 12a, 22a) to each loading side. On the other hand, the two automatic deposition devices 1 and 2 are configured to be able to selectively deposit on the way of the intermediate conveyor 5 or the transfer conveyor 4 by a visual inspection of an operator or a determination signal mechanically determined. That is, only the front plate veneer having relatively no surface defects is deposited on the carry-in side deposition table 11, and the other back plate veneer is deposited on the next-stage deposition table 21. Such detectors are related as shown in the control diagram of FIG. 4, and the actuating mechanism 12a of the deposition apparatus 1 determines the discriminating signal X, a signal indicating that the interval detector 13 does not have a succeeding single plate, and further the deposition position detector 14. The detection mechanism operates only when the three detection signals of (1) and (2) are overlapped, and the operation mechanism 22a of the deposition apparatus 2 detects the determination signal Y, a signal that the interval detector 23 does not have a subsequent single plate and a detection signal of the deposition position detector 24 Will only work if the two overlap. Since the deposition device 3 on the most unloading side does not have a pedestal on the unloading side, the actuating mechanism 32a responds only to the detection signal from the deposition position detector 34.
Works.

As described above, in this embodiment, the automatic deposition apparatuses 1 and 2 and the automatic deposition apparatuses 2 and 3 are paired to configure the multiple automatic deposition apparatus of the present invention. By connecting 3 units, 3 v
Even if they are conveyed in a row, they can be processed without any problems.

Next, the operation will be described. Now, a signal X instructing the deposition on the deposition table 11 is transmitted, the veneer abuts the deposition position detector 14, and in this state, the interval detector 13 detects the subsequent veneer. If not, they are dropped and deposited on the deposition table 11.
Similarly, a signal Y instructing deposition on the deposition table 21 is transmitted,
If the distance detector 23 does not detect the subsequent veneer, the deposition table 21
Is deposited and dropped. Even if the preceding veneer and the subsequent veneer are conveyed in series, the preceding veneer is for the back plate (Y signal).
If the subsequent veneer is for the front plate (X signal), there is no problem under the condition that no further veneer is conveyed after the subsequent veneer. The problem is when the same type of veneer is connected, and when the preceding veneer is for the front plate (X signal) and the following veneer is for the back plate (Y signal). FIG. 5 shows a case where the single veneer for the front plate is continuously conveyed among these,
Although the preceding veneer A arrives at the deposition position on the deposition table 11, the interval detector 13 has already detected the following veneer B, so the operating mechanism
12a does not operate, the preceding veneer A passes over the deposition table 11,
It is transported to the unloading side while maintaining the same positional relationship. Then, since the distance between the preceding veneer A and the succeeding veneer B is narrow, the succeeding veneer B detects the deposition position of the deposition table 11 before the preceding veneer A contacts the deposition position detector 24 of the deposition table 21. Abut the container 14. Since the interval detector 13 does not detect the veneer conveyed subsequently to the subsequent veneer B at this time point, the operating mechanism 12a is activated, and the subsequent veneer B is first placed on the deposition table 11. Is deposited. Subsequently, the preceding veneer A is the deposition position detector 24
However, since the subsequent veneer B is deposited on the deposition table 11 as described above, it does not come into contact with the interval detector 23 at this point, and therefore the actuating mechanism 22a is actuated, and the preceding veneer B is actuated. The plate A is deposited on the deposition table 21. Further, in the case where three single plates for the front plate are connected in series, the interval detectors 13 and 23 are involved, and the stacking plates 31, 21, and 11 are sequentially deposited from the preceding single plate.

Incidentally, the arrangement order of the single plates for the front plate and the back plate on the stacking table, and the content of the discrimination by the discrimination signal, etc. are not limited to the embodiment, of course, but as a result, the deposition table on the unloading side should be seen. Since veneers other than the desired veneer are mixed, it is desirable to consider in advance that high quality veneers such as front veneer should be deposited on the deposition table on the most loading side. Further, if the above-mentioned deposition apparatus is further installed on the carry-out side, the processing capacity can be improved accordingly.

Since the present invention is configured as described above, even if the distance between the veneers sent to the deposition apparatus is small and cannot be processed by the conventional deposition apparatus, the distance is detected in advance and the drop deposition is performed. When it is judged that the processing capacity of the mechanism is exceeded, the preceding veneer can be conveyed as it is to the unloading side and the subsequent veneers can be preferentially deposited, so problems such as stacking of veneers and clogging can be solved. To be done. Therefore, the deposition process can be speeded up without temporarily stopping the deposition work for repair.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a multiple automatic deposition apparatus according to the present invention, FIG. 2 is a left side view of the same, and FIG. 3 is a multiple automatic deposition apparatus according to the present invention connected in series. FIG. 4 is a front view showing the embodiment, FIG. 4 is a control view in the same embodiment, and FIG. 1 (2,3) …… Automatic veneer deposition equipment, 11 '(21,31) ・ ・ ・
… Deposition platform, 12 (22,32) …… Down bar, 12a (22a,
32a) ...... knock-down bar operating mechanism, 13 (23) …… interval detector, 14 (24, 34) …… stacking position detector, 4 …… transport conveyor, 5 …… intermediate conveyor, A …… preceding unit Board, B ...
Subsequent veneer, X, Y ... Discrimination signal

Claims (2)

[Claims] 1. A deposition table for sequentially depositing veneer veneers, a deposition position detector for detecting the arrival of veneer veneers above the deposition table, and a veneer veneer for responding to a detection signal from the detector. In a veneer veneer automatic deposition apparatus configured to sequentially deposit veneer veneers sent by a conveyor to a deposition stage, the veneer veneer including a drop deposition mechanism for dropping the veneer onto the deposition stage. A separate stacking table is provided, and at the carry-in side of the stacking apparatus, at a distance from the drop stacking mechanism multiplied by at least the transport speed of the transport conveyor and the time required for the reciprocating operation of the drop stacking mechanism, the subsequent Of the veneer veneer is provided, and when the deposition position detector detects the preceding veneer, if the interval detector does not detect the subsequent veneer, the drop deposition mechanism is activated. Let On the other hand, when the interval detector detects the subsequent veneer, the drop and deposit mechanism is automatically controlled so that the operation of the drop and veneer is prohibited and the preceding veneer veneer is directly sent to the unloading side. Veneer veneer multi-layer automatic deposition equipment equipped with a circuit. 2. The veneer unit according to claim 1, wherein the other deposition table provided on the carry-out side of the automatic deposition device is an automatic deposition device including a deposition position detector and a drop deposition mechanism. Multiple plate type automatic deposition equipment.