JPS6056752A - Veneer reversing and arranging device - Google Patents

Abstract

PURPOSE:To efficiently perform a work and prevent slippage between obverse and reverse veneers by juxtaposing a conveyor and a cradle mechanism in a veneer reversing and arranging device for manufacturing plywood so as to realize an arranging work only by sending obverse and reverse veneers onto a conveyor. CONSTITUTION:Two table lifters 2, 3 are juxtaposed with each other in front of a stool 1 and an obverse veneer F and a reverse veneer B are respectively laid on pallets 4 upon said filters 2, 3. A feeding roller unit 6 and a conveyor 7 are provided in front of the lifter 2. Further, a reversal driving shaft 24 is rotatably maintained along one side of the conveyor 7, while an arm 26 is fixed to said shaft 24. Furthermore, a cradle mechanism 39 is placed side by side with the conveyor 7. Now, one obverse veneer F and one reverse veneer B, one being laid over the other, are fed onto the conveyor 7 and, said veneers at a standstill there are reversed onto an adjacent cradle mechanism 39 by means of the plural number of arms 26. The obverse and reverse veneers F, B are arranged on said mechanism 39 through repeating the above-mentioned operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a veneer inversion system for manufacturing plywood.

Technical background of the invention and its problems As shown in Fig. 1, when manufacturing plywood using a front veneer (G), a back veneer ω) and a core veneer (C), conventionally the process was as shown in Fig. 2. As shown, the front veneer (G) and the back veneer (B) are laminated on the left and right, and one sheet is taken from each side and stacked in the middle.This is called mechanical work, but in the next process, Take out the front veneer (G) and back veneer (B) arranged as shown in (a) one by one, and add the core veneer with adhesive applied to both sides as shown in Figure 3 (0). Boards (Q) are overlapped and laminated in a three-layer unit, and then, as shown in Figure 3 (-), the front veneer (G) and back veneer (B) are completely separated to form the front veneer (G). and back veneer (B
) and the core veneer is combined into a bunduit unit to form plywood.

However, with the work shown in Figure 2, a team of two people can only break down about 450 groups per hour.
Moreover, being forced to sit in a hunched over position causes severe fatigue and reduces efficiency even further when working for long periods of time. For these reasons, there is a desire in the industry for a compact and low-cost device that not only improves efficiency but also can be accepted by small businesses.

Purpose of the Invention The present invention was made in view of the above points, and its object is to provide a veneer reversing assembly device that can streamline assembly work and obtain a neatly aligned assembly condition. .

Summary of the Invention This invention provides a conveyor and a pedestal mechanism that are arranged side by side, and at least one front veneer and one back veneer are stacked one on top of the other and sent to the conveyor.
The front veneer and the back veneer, which are stationary on the conveyor, are reversed onto the pedestal mechanism next to them using multiple arms, and this operation is repeated to place at least the front veneer and the back veneer on the pedestal mechanism. How it works,
Therefore, the operator only needs to feed at least the front veneer and the back veneer onto the conveyor, which reduces fatigue and increases efficiency.Moreover, one side of the arm can be recessed into a curved shape. In addition, the front veneer and back veneer are curved by wind pressure when inverted, completely preventing the front veneer and back veneer from shifting in the centrifugal direction, and the pedestal mechanism is alternately activated with each reciprocation of the arm. By moving the front veneer and back veneer, it is possible to shift and stack each set of front veneer and back veneer. The structure is such that each set can be taken out very easily.

Embodiment of the Invention An embodiment of the invention will be explained based on FIGS. 4 to 11. There are two tables (2) in front of the step stool (1).
) (3) are installed in parallel, and these table lifters (2)
(3) A front veneer (G) and a back veneer (B) are stacked on the upper pallet (4). The top surface of the inner front veneer (G) is substantially lower than the top surface of the outer back veneer (F'), and a ruler (5) is provided on the upper side of the table lifter (2).

Furthermore, a feeding roller unit (6) and a conveyor (7) are installed in front of the table lifter (2).

The feeding roller unit (6) is a rubber-wrapped killer roller (8).
(9), and the upper rubber-wrapped roller (9) is supported by a bearing holder α0 which is held so as to be able to rise and fall freely, and a rotating shaft 02 driven by a motor (11) is mounted on the upper part of these bearing holders. Cams α■ fixed at both ends are fitted.

The conveyor (power rollers (14) and the lower rubber-wrapped rollers (8) are connected to a motor (2) by a chain Ql and a tin rocket Qe (11). (1 (A) is formed with a flange Cυ located on the outside of the ruler (5), and on the outer periphery is formed a wire (2
is spirally wound, and a stopper (23) is attached to the rear of the conveyor (7). In addition, the conveyor (
A reversing drive shaft (2 (a)) is rotatably held along the - side of 7). A sprocket (251 and a plurality of arms 06) is fixed to this reversing drive shaft (24). As shown in FIG. 7, four portions (27) that are curved in the radial direction are formed on the negative surface of these arms CI'6). At the bottom of the conveyor (7), there is provided a crank which is connected to a speed-adjustable drive section (c) and rotates back and forth within a range of about 180 degrees. In addition, the shaft C13 to which the sprocket (sprocket) C301ClD is fixed and the shaft (b) to which the tin rocket ((2) is fixed are provided in parallel, and the lower shaft 04) is provided with a rod G! 9, a lever (to) that is connected to shift rank 4 and rotates in a range of about 60° is fixed, and a sprocket (to) is wound with a Cheno C37), and a tin rocket (251C1υ is equipped with a Cheno). (241) is wound around the arm (A).This allows the reversal drive shaft (241) and the arm (A) to reciprocate within a range of about 180°.

Next, a pedestal mechanism (3G) is installed in parallel on the side of the conveyor (force). This pedestal mechanism (31 is a table lifter (40)
and a pallet (4B) placed on it.The table lifter (4G has casters (43'e) and can freely reciprocate along the conveyor (7) by approximately SOW. A drive mechanism (43) is provided which moves the brake motor (43).
44), a crank (4) driven by this brake motor (44), and a link (4 (9). Link (41)
Both ends of 19 are cranks (4!9 and table lifter (41)
is connected to.

In this configuration, the worker stands on the step stool (1) and drops one back veneer (B)'e on the right side onto the front veneer (g) on the left side, and then removes the overlapping veneer (F) ( Place B) on the ruler (5) and push it forward. As a result, a photoelectric detector (not shown) is activated and the motor (11) rotates in one direction, so that the bearing holder (IG) is lowered and the rubber-wrapped roller at the top is rotated.
The roller (9) presses the veneer (F) (B) against the rubber-wrapped roller (8) at the bottom and rotates accordingly. Rubber-wrapped roller (8)
The veneer (F) (13) fed into the wire (9) is sent forward and comes into contact with the stopper (c), and the wire (2)
is pressed against the left flange (21) of the roller 04). At this point, the drive unit 1281 rotates in one direction based on the detection signal from the photoelectric detector, and the arm (26) moves the veneer (6) (B) on the conveyor (7) to the pallet (4υ
Invert and stack on top. The pallet (top veneer C on 4υ) is on top. At this time, arm (a) is 0.1
Although it rotates at a speed of ~0.3 sec, the veneer (F) (B) curves due to wind pressure because four parts are formed on the inner surface.

This prevents the veneer (G) (B) from shifting in the centrifugal direction. The middle part of the rotation range of the arm (26) is a single plate V) (
B) is vertical, but even if the angular velocity of the arm (A) is constant, the velocity in the left and right direction is affected by the force on the conveyor (force) and the velocity on the pallet (4υ, which is the slowest and increases towards the middle of the stroke, so the speed on the veneer (A) is G) (B) will not deviate downward due to its own weight even if it becomes vertical in the middle of the stroke.As a result, the veneer (G) ω) aligned with the flange CD will not move downwards on the conveyor even on the pallet (49). Align neatly with one edge of side (7) as a reference. Veneer (F) on pallet (41)
As the number of (B) increases, the table lifter (4 [D] gradually lowers and always keeps the top surface of the veneer (G) (B) constant. The drive unit (2 barrels reverses and the arm (to) moves to the conveyor (7). By the time it returns to the top, the rotation of the motor αυ causes the bearing holder (10) to return to the top together with the rubber-wrapped killer roller (9) and waits for the next veneer to be inserted.

In this way, single plate CF? )(B) on the pallet (41
), but each time the arm f261 makes one reciprocation, the brake motor (44)
Rotate o0, and then the table lifter (4I will move back and forth alternately. Therefore, the table lifter (4I will move back and forth alternately. Therefore, the table lifter 0) will shift alternately for each set, and the pallet (
When 4υ is transferred to the next step as shown in FIG. 9 and the core veneers f:v are attached, the two-ply set of veneers (g) 0) can be taken out in an extremely orderly manner.

In this way, the operator only needs to feed the front veneer (F') and the back veneer (B) to the conveyor (force), so the work is easy. ) (B
) increases as it decreases, so you are not forced to take a half-stuck posture, and you experience less fatigue. Figure 4 and Figure 10 Single Layer)
When done manually, an average of 540 to 590 pairs can be assembled per hour. Previous performance was 2 people per hour 4
50+tfl, it is possible to increase production even if the number of workers is halved. In the double layout shown in Figure 11, two workers are assembling the veneers (F) and (B) on one pedestal mechanism 0■.
It is possible to organize 91,050 to 1,150 sets per hour.

In addition, in the double layout shown in Figure 11, the reversing drive shaft (241) of the arm (26) is arranged on the left side of the conveyor (force) for the worker on the right, and the conveyor (on the right side of the force) for the worker on the left. Arrange.

Effects of the Invention Since the present invention is constructed as described above, the front veneer and back veneer can be stacked one after another on the pedestal mechanism simply by feeding them onto the conveyor. It is possible to increase the production output, and by forming four parts on one side of the arm that reverses from the front and back veneer all conveyor to the pedestal mechanism, it is possible to reduce the misalignment between the front and back veneers. In addition, the pedestal mechanism can be moved alternately and the veneers on the pedestal mechanism can be shifted and stacked for each set, so that when bonding the core veneers in the next process, it is possible to stack each set separately. This has the advantage of being extremely easy to take out.

[Brief explanation of the drawing]

Figure 1 is a scaled-down exploded perspective view showing the structure of plywood, Figure 2 is a scaled-down perspective view of the conventional veneer assembly process, and Figure 3 is a scaled-down exploded perspective view showing the structure of plywood. FIG. 4 is a plan view showing an embodiment of the present invention, FIG. 5 is a side view of the conveyor and table lifter, and FIG. 6 is the table. Front view of lifter,
Fig. 7 is a rear view of the conveyor and pedestal mechanism, Fig. 8 is a side view of the pedestal mechanism, Fig. 9 is a side view showing the structure, and Figs. 10 and 11 are scaled-down views showing how it is used. FIG. F...Front veneer, B...Back veneer, 7...Conveyor,
24... Reversing drive shaft, 26... Arm, 29...
Recessed portion, 39... pedestal mechanism, 43... drive mechanism

Claims (1)

[Claims] A conveyor is provided for transporting at least a front veneer and a back veneer one by one to a fixed position, and a pedestal mechanism is movably provided next to the conveyor, and a pedestal mechanism is movably disposed next to the conveyor. A reversing drive shaft is provided in between, which rotates back and forth meticulously along the moving direction of the Koshiveyor, and the reversing drive shaft supports the front veneer and the back veneer on the conveyor from below, perpendicular to the reversing drive shaft. A plurality of arms which are sequentially reversed and stacked toward the upper surface of the pedestal mechanism are connected, and the opposing surfaces of the front veneer and the back veneer of the arms are curved in a direction perpendicular to the reversal drive shaft. A veneer reversing device, characterized in that a recessed portion is formed in the veneer reversing device, and a drive mechanism is provided for driving the pedestal mechanism by alternating its moving direction every time the arm reciprocates.