JPH0344971B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a loading and transferring device for veneers and the like. The present applicant previously invented a loading/transferring device for veneer, etc., which transports a spare pallet in an upright state, as published in Japanese Patent Application No. 58-135158 entitled ``Apparatus for loading/transferring plate-like materials, sheet-like materials, etc.''.

By the way, in recent years, in order to promote cutting efficiency and make effective use of space, a stacking device has been developed that cuts long logs, splits the resulting veneers into two, and places them side by side.
(5, 5' in the drawing) is used.

However, in the above invention, the pallet upright device and the overturning device provided in the pallet transfer device are
Since there are only three rotating arms (17, 21, 21' in the drawing), the parallel loading devices 5, 5'
It is not possible to send a pallet to

The present invention is an improvement of the above-mentioned invention so that pallets 9, 9' can be inserted into the parallel stacking devices 5, 5'. That is, in the present invention, the loading roller table 14 has two stages, upper and lower, and
The rotary arm 17 of the upright device 16 provided with the pallet transfer device 15 is configured to upright the pallets 9, 9' from the upper and lower two stages of the loading roller table 14; The downstream rotating arms 21 and 21' are provided in two stages, front and rear, on the pallet advancing path, and the upstream and downstream loading devices 5 are also provided in front and behind on the pallet advancing path.
Pallets 9 were conveyed in two rows at 5'.
The gist of the configuration is that 9' is sent.

By adopting the above configuration, the present invention has the following features:
In a veneer stacking and transferring method using upstream and downstream side stacking devices 5 and 5' provided before and after the pallet traveling path, the pallet transfer device 15 is installed so that the pallets 9 and 9' can be transferred in an upright state. It is made to be adaptable.

(Explanation of the embodiment) (1) The sized veneer veneers are cut into two pieces in the same manner as cutting with the rotary race 1 and carried out in two rows, and each is carried into the cutting devices 2 and 2', and the defective parts are cut off. Remove and temporarily cut to the effective sizing width.

After being cut, the temporarily cut sized veneer veneers are intermittently conveyed, the distance between the front and rear sized veneer veneers is narrowed, and the sized veneer veneers are cumulatively cut into approximately regular lengths by the cumulative length cutting devices 3, 3'.

After cumulative cutting, the sized veneer veneers are conveyed and inserted by the conveyor 4 into upstream and downstream side stacking devices 5, 5' which are provided one behind the other on the pallet advancing path.

The upstream and downstream stacking devices 5, 5' have feeding devices such as roller conveyors 6, 6' and feed conveyors 7, 7' for receiving and conveying the sized veneer veneers to be conveyed and inserted.

In addition, the upstream and downstream side loading devices 5, 5' are used to store the sized plywood veneers on the roller conveyors 6, 6', which have been received by moving or rotating left and right, in a fixed position and stacking them on the pallets 9, 9, and 10 on the lifters 8, 8'. A stacker 10, 10' is provided which rests on the stacker 9'.

The sized veneer veneers conveyed by the feeding devices 6, 6', 7, 7' are released from the feeding devices by the operation of the stackers 10, 10', and are moved up and down by the lifters of the upstream and downstream stacking devices 5, 5'. Pallet placing conveyors 11, 11' provided on 8, 8'
Pallets 9, 9' are stopped in a predetermined position above.
The items are stacked on top while adjusting the height positions of the lifters 8, 8'.

At the same time, the upstream and downstream side stacking devices 5, 5'
The auxiliary arms 12, 12' attached to the auxiliary arms 12, 12' operate, and the continuously conveyed sized veneer veneers are temporarily stacked on the auxiliary arms 12, 12'.

The quantitative stacking of sized veneer veneers can be detected by any method, such as by detecting the number of stacked veneers or the number of stacker operations using a counter, or by detecting the height position due to the lowering of the lifter using a phototube, limit switch, etc. good.

Lifters 8, 8', which are used to load a fixed amount of veneer veneers on pallets 9, 9', are equipped with auxiliary arms 12, 1.
It is lowered simultaneously with the operation of 2' (the auxiliary arm may be operated simultaneously with the lowering of the lifter after a fixed amount has been loaded), and is stopped at the lowered fixed position.

After lowering the lifters 8, 8', pallet placing conveyors 11, 1 provided on the lifters
1' is activated, and the sized veneer veneers stacked on the pallet are conveyed to a take-out roller stand outside the stacking device.

(2) Figure 1A shows an upstream and downstream loading device 5, which arranges two sized plywood veneers in parallel in front and back on the pallet travel path.
5' are connected.

Figure 1(b) shows another row of two stacking devices arranged in parallel, and four stacking devices 5, 5', 5'', and 5 are connected. It is also possible to connect a plurality of devices, and each connected loading device is provided with the following overturning device.

On the other hand, the spare pallets are arranged in two stages, upper and lower, each in one direction (in the opposite direction to the take-out roller stand for taking out sized plywood veneers installed outside the loading device).
The pallet is placed on the carry-in roller stand 14 for carrying in a spare pallet, which is inclined at an angle, by a lift vehicle or the like, and as the roller rotates, the pallet is inserted into the upright device 16 of the pallet transfer device 15 for standing up the pallet.

The upright device 16 is equipped with two stages of rotating arms 17 in an L-shape, a U-shape, etc., with the bottom of the rotating arms 17 serving as a fulcrum, and having an angle within a range of approximately 90° perpendicularly or horizontally from a horizontal plane or a vertical plane. The pallet, which is carried in a substantially horizontal state from the carrying roller table 14, is erected substantially vertically by the rotational drive of the rotary arm 17.

Further, the upright device 16 may be provided with rotating arms each having an L-shape, a V-shape, a U-shape, or the like, respectively, for the upper stage and the lower stage of the carry-in roller table 14. The two erected spare pallets are conveyed by a conveyor 18 while being supported by a guide 19 in two rows while each remains erect.

Each of the transported pallets is inserted into the overturning device 20 while standing upright, and stopped at a fixed position. The transfer device 20 is L-shaped, V-shaped, U-shaped,
It has upstream and downstream rotating arms 21 and 21' arranged in front and behind each other on the pallet advancement path of the shape, etc., and uses the bottoms of these upstream and downstream rotating arms 21 and 21' as fulcrums,
It is rotatably driven by a drive device such as a pneumatic, hydraulic cylinder, or motor drive at an angle of about 90° vertically or horizontally from a horizontal plane or a vertical plane, and two units are rotated by each other. It can be mounted in duplicate in a position where it will not be disturbed.
The two pallets conveyed in an upright position are inserted into the overturning device 20 and wait. When inserting the upstream and downstream loading devices 5, 5' into the lifters 8, 8', the pallets 9' on the loading device side are first lowered into a horizontal state by operating the downstream rotary arm 21' of the overturning device 20. Then, the pallet is placed on the pallet placing conveyor 11' on the lifter 8 of the downstream loading device 5'.

Next, the pallet placing conveyor 11' on the lifter 8' of the downstream side stacking device 5' is operated, the pallet is transported to a fixed position on the lifter 8' of the downstream side stacking device 5', and the pallet placing conveyor 11' is operated. ’ and place it in place.

Further, the downstream rotary arm 21' is left in the laid down state, and the upstream pallet 9 is similarly operated to lie down in a horizontal state and placed on the take-out conveyor 11 of the lifter 8 and conveyed. ,
It is conveyed to a fixed position on the lifter 8 of the upstream side stacking device 5, the take-out conveyor 11 is stopped, and it is placed in the fixed position. The lifters 8, 8' into which the pallets have been inserted are raised at the same time as the pallets are placed in a fixed position or after a certain period of time, and stopped at a predetermined position by a detector such as a phototube or a limit switch. When the lifters 8, 8' stop, the auxiliary arms 12, 12' are released and the sized veneer veneers temporarily supported on the auxiliary arms 12, 12' are stacked onto a pallet.

The same operation is repeated thereafter.

In this way, the sized veneer veneers are automatically stacked, and the sized veneer veneers can be carried out while being temporarily received by the auxiliary arm. Moreover, the pallet transfer device allows the pallets to be automatically inserted into the stacking device.

(3) The operation of the above-mentioned overturning device 20 is illustrated as follows.

FIG. 6 2: Two pallets 9, 9' are waiting in an upright state in the pallet transfer device 15 by upstream and downstream rotary arms 21, 21' arranged front and rear on the pallet advancing path.

The pallet loading conveyors 11, 11' of the upstream and downstream side loading devices 5, 5', which are arranged before and after the pallet traveling route, are stopped empty, and the take-out conveyors 11, 11' are loaded with pallets on the pallet traveling route. The disposed upstream and downstream stoppers S, S' are brought into a non-operating state. (In Fig. 6, ⁰ of the stopper S indicates the inoperative state and 0 indicates the operating state.) Fig. 6b: The rotating arm 21' on the downstream side is laid down, and the pallet 9' on the downstream side is laid down. At the same time, the take-out conveyors 11, 11' operate.
At the same time, the downstream stopper S' of the downstream take-out conveyor 11' enters the operating state.

FIG. 6c: The downstream pallet 9' reaches the downstream take-off conveyor and is stopped at the downstream stopper S'.

FIG. 6d: The rotating arm 21 on the upstream side falls down, and the pallet 9 on the upstream side also falls down and starts moving forward and backward. At the same time, the upstream stopper S of the upstream take-out conveyor 11 enters the operating state.

FIG. 6e: The upstream pallet 9 reaches the stopper S of the upstream take-out conveyor 11 and stops. And take-out conveyor 11,1
1' also stops. When the pallets 9, 9' finish stacking the sized veneers and move, the state shown in FIG. 6a is reached again.

(4) In actual case, the lifter 8 of the loading device 5, 5',
When the sized veneer veneers are stacked on the pallets 9, 9' on the pallets 8' (before the sized veneer veneers are stacked), the spare pallets 9, 9' are placed in advance on the overturning device 20. By preparing the pallets 9 and 9' while standing upright, the pallets 9 and 9' can be inserted smoothly in a short period of time.

The pallets 9, 9' can be conveyed in a narrow space because the pallets 9, 9' are raised up after being received from the carry-in roller table 14 by the pallet transfer device 15, and laid down when transferred to the lifters 8, 8'.

(Effects of the present invention) The loading roller table 14 is arranged in two stages (upper and lower), the rotating arms of the upright device 16 are arranged in upper and lower stages, and the rotating arms 21, 21' of the overturning device 20 are activated over time.
The staged operation makes it possible to split the veneer obtained by cutting long logs into two and send the pallets 9, 9' to the parallel upstream and downstream stacking devices 5, 5'.

[Brief explanation of drawings]

Fig. 1: A plan view of a loading/unloading device using the device of the present invention, Fig. 2: An enlarged view of the main parts of Fig. 1, Fig. 3: Fig. 2 - arrow view, Fig. 4: Fig. 2 - Arrow view, FIG. 5: Side view of the overturning device 20, 20', FIGS. 6 a to e: Explanatory diagram of the operation of the overturning device 20. 1: Rotary race, 2, 2': Cutting device,
3, 3': Totalizing length cutting device, 4: Unloading conveyor, 5, 5': Upstream/downstream side loading device, 6, 6': Roller conveyor, 7, 7': Feeding conveyor, 8,
8': Lifter, 9,9': Pallet, 10,1
0': Stacker, 11, 11': Pallet placing conveyor, 12, 12': Auxiliary arm, 13: Roller stand,
14: Loading roller stand, 15: Pallet transfer device, 1
6: Erecting device, 17: Rotating arm, 18: Guide conveyor, 19: Guide guide, 20: Tipping device, 2
1, 21': Upstream and downstream rotating arms, S, S': Upstream and downstream stoppers.

Claims (1)

[Claims] 1. A rotary race 1, a cutting device 2 for temporarily cutting a sized veneer veneer to be carried out into an effective sized width,
2', a cutting device 3, 3' that cumulatively cuts the tentatively cut sized veneer veneers into a fixed length, and conveys the sized veneer veneers stacked on the pallet 9. Pallet placing conveyor 11, 11',
Lifters 8, 8', upstream and downstream loading devices 5, 5' on the pallet advancing route, which are equipped with auxiliary arms 12, 12' for temporarily receiving sized veneer veneers, and for carrying in spare pallets 9. A pallet transfer device equipped with a carrying-in roller table 14, a raising device 16 for standing up the pallets carried in from the roller table 14, a guide conveyor 18 for guiding the pallets, and an overturning device 20 for turning the raised pallets 9 upside down. 15, the upstream and downstream side loading devices 5, on the traveling path of parallel pallets,
Front and rear row stoppers S, S' provided at 5' and pallets 9, 9'
an overturning device 20 equipped with upstream and downstream rotary arms 21', 21 on the pallet advancing path, which overturn the pallets 9, 9' over time in order to feed the pallets 9, 9' from a perpendicular direction to the pallets 5'; and the downstream rotary arms 21'. When the upstream rotating arm 21 falls down, the upstream stopper S on the pallet advancing path does not operate, and only the downstream stopper S' on the pallet advancing path operates, and conversely, when the upstream rotary arm 21 falls down, only the upstream stopper S operates. and a control device for controlling the downstream stopper S' so that it does not operate.