KR101133971B1 - Method and apparatus of stacking veneer sheets - Google Patents

Abstract

An object of the present invention is to laminate a single plate 1 without moving it in the horizontal direction during the fall, and the single plate 1 is conveyed and reached on the stacking base, based on a signal detected by the sensor 27. The end plate 1 is separated from the protrusion 7 of the conveyor 9 by the lowering of the bar 15 by the operation of the cylinder 17, and at the same time the pressure band 19 is downstream of the end plate 1 by the lowering of the press band 19 by the operation of the cylinder 23. One side of the side is lowered while pressing from above, and the end plate 1 is laminated on the laminated end plate group 25.

Description

Lamination method and apparatus of single plate {METHOD AND APPARATUS OF STACKING VENEER SHEETS}

Fig. 1 is a side view showing a preferred embodiment of a lamination apparatus of a single plate according to the present invention.

FIG. 2 is a partial sectional view of the lamination apparatus of the end plate seen from the line X-X of FIG.

3 is a partial side explanatory diagram showing the operation of the lamination apparatus of FIG.

4 is a view showing a modified embodiment of the lamination apparatus of the end plate of the present invention.

FIG. 5 is a partial explanatory diagram showing the operation of the lamination device of FIG.

6 is a view showing another modified embodiment of the lamination apparatus of the single plate of the present invention.

FIG. 7 is an explanatory diagram showing the operation of the lamination device of FIG.

8 is a side view showing a conventional lamination apparatus of a single plate.

TECHNICAL FIELD This invention relates to the laminating apparatus and method of a sheet of wood veneer.

According to the lamination method of a single plate used in a process of manufacturing a plywood panel using a conventional single plate, a single plate (or a plurality of single plates stacked in sequence) is one that will fall onto a single plate group. It is conveyed by the conveyor provided in the lamination | stacking position with the end plate support body operated to release | release the end plate (or the some end plate). In such a lamination operation, the end plate has a large area relative to the mass or weight and thus is easily affected by air resistance when falling. Therefore, the end plates do not fall straight onto the end group, and out of position, the end plates are stacked in disorder. Therefore, the end plate group and the end plate may be damaged while transferring the end plate of the end plate group to the next position for the next process.

In order to solve these problems, as shown in FIG. 8, the apparatus is proposed by Unexamined-Japanese-Patent No. 52-22062 (patent document 1). 73 in the figure shows a conveyor for conveying the end plate 71 in the direction of the arrow toward the lamination apparatus. The lamination apparatus shown by 75 as a whole is located adjacent to the downstream side of the conveyor 73 in the conveyance direction of the end plate 71. As shown in FIG. The lamination apparatus 75 is formed with a plurality of holes and can support the end plate by suction, that is, by vacuum, and conveys the end plate to the adjacent lamination position from the end plate group 89 on the support 81. The endless belt 77 (shown only in FIG. 8) which can move in a direction is provided. Reference numeral 79 denotes a suction device in which a hole is formed to support the end plate 71 in a vacuum and disposed in contact with an upper surface of the endless belt 77.

The lamination device 75 is also bidirectional by the linkage 85 by rotating an eccentric wheel 87, usually made of steel and driven by a motor (not shown). Each bar 83 is movable to be perpendicular to each other in the direction indicated by the arrow. The bar 83 separates the end plate 71 from the endless belt 77 in which the hole is formed so as to fall toward the end plate group 89. As shown in the figure, each bar 83 reciprocates once by one rotation of the eccentric wheel 87.

Between two adjacent endless belts 77, a pressure band 91, one end of which is fixed at a position higher than that of the endless belt 77 in which a hole is formed, is provided. As shown in Fig. 8, the pressing band 91 is positioned so that the other end which is not fixed is located adjacent to the downstream side of the endless belt 77, and most of the pressing band 91 is mounted on the end plate of the end plate group 89. Droop by its own weight. 93 denotes a sensor for detecting the arrival of the end plate conveyed by the endless belt 77 from the end plate group 89 to the adjacent lamination position. Although not shown in the drawing, the support 81 may be a suitable means such as a hydraulic cylinder that raises the support 81 according to a signal generated by a sensor such as a photocell capable of detecting the highest position of the single plate group 89. Equipped. Therefore, the upper part of the end plate group 89 always maintains a predetermined height.

In operation of the laminating apparatus, the end plate 71 conveyed forward by the conveyor 73 is lifted and supported by the endless belt 77 in which a hole is formed under the vacuum state by the suction apparatus 79. In the meantime, the end plate 71 comes into contact with the pressure band 91, and the tip of the end plate 71 conveyed in contact with the pressure band 91 is detected by the sensor 93 until the detection signal is generated. . The motor is operated so that each bar 83 operates in accordance with the signal, and ascends once as indicated by the double-headed arrow. Thus, the end plate 71 is separated and falls off from the endless belt 77 together with the pressure band 91 which was on the end plate 71. Since the friction force generated between the pressure band 91 and the end plate 71 due to the weight of the pressure band 91 that has been raised thereafter, the end plate 71 falls vertically without deflecting or tilting. As a result, the end plate 71 is sequentially laminated on the end plate group 89.

In the stacking apparatus of the prior art, the force acting downward on the end plate 71 is the weight of the band 91 for press (exactly, since the end plate 71 is falling, the force acting downward actually causes the weight of the press band 91). Less than). However, if the weight of the pressing band 91 is small, the frictional force generated between the end plate 71 and the pressing band 91 is reduced to prevent the irregular stacking while the end plate 71 falls. When the weight of the pressure band 91 is increased to suppress the movement of the end plate 71, a greater force acts on the end plate 71 which is brought into contact with and conveyed under the pressure band 91 having the increased weight. As a result, the end plate 71 is disturbed or broken while being conveyed by the endless belt 77.

Apart from the conventional lamination apparatus of the patent document 1, the end plate conveyed forward by a conveyor belt such as the endless belt 77 is similar to bar 83, but the force downwards on the end plate until the bar presses the top surface of the end plate group of the end plate group. Devices are known which are operated to exert and are separated by rapidly operating bars. The bar is usually made of a hard material, such as steel, which is impacted when the end plate is pressed by a bar facing the upper surface of the end plate group on the laminate when the number of end plates is still small. As a result, the end plate may be damaged.

This invention is made in view of the said fault, and an object of this invention is to provide the lamination method and apparatus of a single plate.

In order to achieve the above object, the present invention provides a method for laminating single plates which are conveyed onto a single plate group by a conveyor. According to this method, the end plates conveyed by the conveyor are separated at the lamination positions located adjacently on the end plate group so that the end plates can be separated from the conveyor or separated. The falling end plate is disposed to extend from above the end plate and pressurized by an elastic member so as not to interfere with the end plate conveyed by the conveyor. In other words, the elastic guide member is detached from the end plate and at the same time as the air at a speed that can cause friction on at least one side of the end plate extending to be perpendicular to the length of the stretchable guide member in a tight state. It can be made to descend by an appropriate means such as an air cylinder. Thus, the end plate away from the conveyor is pressed. The end plate is pressed by lowering until the elastic guide member is bent on one side of the end plate falling on the end plate group.

The lamination apparatus of this invention is equipped with the conveyor for conveying a single plate in a conveyance direction. The conveyor may be in the form of an endless belt having a plurality of sharp protrusions extending outward from the conveyor to penetrate the end plate in order to support or restrain the end plate. In the vicinity of the conveyor, means are provided for separating the end plates from the conveyor at positions adjacent to the end plate group, whereby the end plates can be separated from the conveyor.

In addition, the stacking apparatus of the present invention is extended so as to be perpendicular to the stretchable guide member, the standby position of the stretchable guide member disposed to extend above the end plate so as not to interfere with the end plate conveyed by the conveyor, and the length of the stretchable guide member. Means for driving the elastic guide member between the lowered position of the elastic guide member to be lowered to bend to press the end plate falling on the end plate group on at least one side of the end plate. The driving means, such as the air cylinder of the embodiment of the present invention, can be made to descend toward the lowered position at a speed that can cause friction with the end plate when the end plate falls in the state where the elastic guide member is taut.

In the lamination apparatus of the present invention, a sensor is provided to detect that the end plate reaches the lamination position, and can generate a detection signal. The detection signal is transmitted to a controller for driving the air cylinder as the driving means and the separating means. Therefore, the elastic guide member is lowered toward the lowered position and the end plate is separated from the conveyor.

In the embodiment of the present invention, the elastic guide member extends in the direction in which the end plate is conveyed by the conveyor in the standby position, and the air cylinder is at the leading end of the end plate in the direction of the end plate in which the elastic guide member is conveyed by the conveyor in the lowered position. Or to bend to pressurize the end plate from one side corresponding to the front side. In this embodiment, one end of the flexible guide member is connected to a rod of the extendable cylinder.

In another embodiment of the present invention, both ends of the flexible guide member are connected to the rod of the cylinder. Therefore, the elastic guide member in the lowered position is bent to press the end plate at both the front end and the rear end of the end plate, that is, the front side and the rear side, in the direction of the end plate conveyed by the conveyor.

The driving means in the lamination apparatus of the present invention, wherein both ends of the elastic guide member are fixed to the lamination apparatus frame, is a cylinder having a rod and a roller that can extend at an end of the cylinder. By this, the position of the stretchable guide member is driven to lower.

The features and advantages of the present invention will become more apparent from the following best-described examples and those described in the accompanying drawings.

(Example)

EMBODIMENT OF THE INVENTION Below, the Example which concerns on the lamination apparatus of the end plate of this invention is demonstrated with reference to FIGS.

As shown in Fig. 1, a conveyor 3 for continuously conveying the end plate 1 (only one is shown in the drawing) at intervals in the direction of the arrow is provided near the laminating apparatus A. As shown in Figs. Single plate 1 is rectangular or quadrilateral having four sides.

As shown in Fig. 1 and Fig. 2, the laminating apparatus A includes a pair of conveyors 9 which are provided with projections continuously at intervals in a direction perpendicular to the conveying direction of the end plate 1 conveyed by the conveyor 3. Each conveyor 9 spans one driven pulley 11 and three driven pulleys 13 so that they are always driven at the same speed as the conveyor 3 in the direction of the arrow on the upper side of the conveyor 9. . Conveyor 9 is a single plate formed on the stacking table 5 by having a plurality of nail or tooth-shaped protrusions 7 extending outwardly at intervals to pierce the single plate 1 as clearly shown in FIG. The end plate 1 stuck by the projection 7 is moved from the group 25 to the adjacent lamination position.

In addition, the laminating apparatus A is provided with a pair of parallel bars 15 adjacent to and extending according to each conveyor 9, in order to separate the end plate 1 stuck to the projection from the conveyor 9. As shown in FIG. 1, each bar 15 is connected to a rod 17a of a pair of air cylinders 17. As shown in FIG. Therefore, the rod 17a of the air cylinder 17 and the bar 15 connected thereto are placed in the ascending position, that is, the standby position, as shown in solid lines in Figs. You can move from below. The air cylinder 17 is rapidly reciprocated with a sufficient length to release the rod 17a from the retracted and forwarded position to press the end plate 1, which is supported by the conveyor 9, through each bar 15 and puncture the projection 7 of the conveyor 9. You can exercise. The falling position of each bar 15 is shown by the dotted line in FIG. The air cylinder 17 is connected to a controller 29 of the lamination apparatus A.

The long, elastic press band 19 (elastic guide member) extends in the same direction as the end plate 1 conveyed by the conveyor 9. More specifically, the pressure band 19 extends between a pair of bars 15, and one end adjacent to the conveyor 3 is formed so as to pressurize the end plates stacked on the end plate group 25 away from the conveyor 9. It is fixed to the frame 21 and the other end is connected to the end of the piston rod 23a of the air cylinder 23. More details on this will be described later. As the rod 23a is retracted to the air cylinder 23, the pressure band 19 is always extended horizontally in a direction parallel to the end plates 1 conveyed by both conveyors 9 and 9. Therefore, as shown in FIG. 1, no interference occurs between the band 19 for pressing and the end plate 1. The pressing band 19 in this embodiment has a length that becomes taut or has a suitable tension when the pressing band 19 is extended as shown in FIG.

As shown in Figs. 1 and 2, the rod 23a is placed in the retracted position to the air cylinder 23. As shown in Figs. When the air cylinder 23 operates, the rod 23a reciprocates between the retracted position (standby position) and the advanced position (falling position) (Fig. 3), and the end portion of the pressure band 19 connected to the rod 23a is It descends to a position below the upper surface of the end plate group 25 of the lamination table 5. Accordingly, as shown in FIG. 3, the pressure band 19 is bent to press the end portion of the end plate 1 falling onto the end plate group 25. The air cylinder 23 can be operated so that the rod 23a descends at a speed higher than the speed at which the object falls by gravity. Therefore, the press band 19 causes friction or pressurizes on one side of the end plate extending perpendicular to the length of the press band 19 for pressurizing the end plate falling from the conveyor. 1, the air cylinder 23 is connected to the controller 29. As shown in FIG.

27 is composed of a reflective type photoelectric tube, and is a sensor for detecting that the end plate 1 conveyed by the conveyor 9 reaches an adjacent stacking position on the end plate group 25. Indicates. Since the sensor 27 is connected to the controller 29, the detection signal detected by the sensor 27 is transmitted to the controller 29.

The operation of the laminating apparatus A will be described below. As described above, each bar 15 is raised, i.e., in the standby position, by the rod 17a of the air cylinder 17 and the rod 23a of the air cylinder 23 placed in the retracted position. Therefore, as shown in Figs. 1 and 2, the pressure band 19 extends horizontally in its standby position.

As shown in FIG. 1, the end plate 1 placed on the conveyor 3 is conveyed to the front, that is, to the right in the drawing. The end plate 1 is conveyed to the conveyor 3, and then conveyed to the adjacent conveyor 9, and stuck to the projection 7 of the conveyor 9, and is conveyed with the conveyor 9 to the front.

The sensor 27 outputs a detection signal to the controller 29 when it detects that the end plate 1 has reached the stacking position of the stacking device, and then the controller 29 transfers the control signal to the air cylinder 17. Therefore, each bar 15 connected to the rod 17a of the air cylinder 17 reciprocates, and presses the end plate 1 supported by the conveyor 9 to be released while the rod 17a is advanced.

Almost simultaneously with the operation of the air cylinder 17 for each bar 15, the controller 29 transmits a signal for operating the air cylinder 23 according to the detection signal from the sensor 27. Accordingly, the rod 23a is also operated. In the embodiment, as shown in Figure 3, while the rod 23a is in operation, the pressure band 19 to which one end of the rod 23a is connected is one side of the end plate extending perpendicular to the length of the pressure band 19, that is, the end plate is a conveyor. It bends and descends at the position which presses one side corresponded to the front-end | tip of the direction conveyed by 9.

Although not specifically shown in the figure, the air cylinder 23 can be operated so that the rod 23a descends at a speed faster than the speed at which the object falls by gravity. Therefore, the press band 19 causes friction or pressurization at one side of the end plate, that is, at one end, to press the end plate falling from the conveyor. As a result, as shown in FIG. 3, after releasing from being stuck and supported by the conveyor 9, the end plate 1 resists air before rubbing against the press band 19 or falling onto the end plate group 25 in a pressurized state. Therefore, it falls vertically so as to be laminated on the end plate group 25 without being missed or tilted.

After the rod 17a of the air cylinder 17 and the rod 23a of the air cylinder 23 move to the retracted position, the lamination apparatus A waits for lamination of the next end plate.

In the above apparatus, since the mass of the pressing band 19 is small, only a small force is required to operate the pressing band 19 quickly enough to stack the single plates in sequence. Therefore, a small air cylinder may be used for the air cylinder 23. In addition, the present embodiment can solve the impact that each bar made of a hard material such as steel pressurizes on the end plate group phase which still has only a few end plates. The magnitude of the frictional force between the pressing band 19 and the end plate 1 can be changed by controlling the amount of air supplied to the air cylinder 23 to change the descending speed of the pressing band 19.

Next, a modified embodiment of the lamination apparatus of the single plate of the present invention will be described with reference to Figs.

4 and 5 of the modified embodiment differ from FIGS. 1-3 of the embodiment in that an air cylinder 23 is further added to the position of the frame 21 of the lamination apparatus of FIG. Therefore, both ends of the pressure band 19 are connected to the end of the rod 23a of the air cylinder 23. In the operation of the lamination apparatus of Fig. 4, the sensor 27 detects that the end plate 1 conveyed by the conveyor 9 reaches the lamination position of the lamination apparatus, so that the air cylinder 17 operates the rod 17a so that each bar 15 is lowered. The end plate 1, which is stuck on the conveyor 9 and is supported, is pressurized to be released. At the same time, as shown in FIG. 5, the air cylinder 23 similarly pressurizes the end plate on the entire surface within the range in which the pressure band 19 extends, and the rod 23a so that the pressure band 19 bends and presses both sides or both ends of the end plate 1. Works to extend. Both air cylinders 23 are operated to extend the rod 23a at a high speed as in the embodiment of Figs. Therefore, the pressure band 19 pressurizes the end plate conveyed from the conveyor to cause friction not only on the upper surface of the end plate 1 but also on both sides. Therefore, after releasing from each bar 15, the end plate 1 descends vertically on the end plate group 25 while causing friction or holding pressure by the pressure band 19.

Next, another modified example of the lamination apparatus of the single plate of this invention is demonstrated with reference to FIG.

For example, in the above embodiment of Fig. 3, since the pressure band 19 is directly connected to the end of the rod 23a of the air cylinder 23, the cylinder 23 and the rod 23a are pressurized each time the cylinder 23 is driven and the rod 23a is extended. It is influenced by the horizontal component of the force due to the tension of the dragon band 19. Therefore, the air cylinder 23 needs to be installed firmly in order to resist such a force. 6 and 7 differ from the above embodiment in that the pressure band 19 is not connected to the piston rod 23a. In Fig. 6 showing only relevant portions of the lamination apparatus for the purpose of explaining this modified embodiment, both ends of the extending pressure band 19 are connected to the frame 21 of the lamination apparatus and have a rotatable roller 31 at the end of the cylinder rod 23a. The air cylinder 23 is disposed on the pressure band 19 together with the roller 31 in contact with the upper surface of the pressure band 19. In the operation of the lamination apparatus of this modified embodiment, as shown in Fig. 7, the air cylinder 23 operates so that the rod 23a extends, and the pressure band 19 is lowered by the roller 31. By using the roller 31 instead of connecting the pressure band 19 to the rod 23a, the air cylinder 23 and the piston rod 23a are not affected by the horizontal component of the force.

In addition, the lamination apparatus of the present invention can be modified or changed in various ways without departing from the spirit of the present invention as illustrated below.

In this embodiment, the pressure band 19 is adjusted so that the rod 23a coupled to the air cylinder 23 retreats to have a suitable tension in the standby position. However, it is not necessary to apply tension to the pressure band 19 in the standby state, and may be applied when the pressure band 19 is lowered in a state where friction is applied to the end plate.

In the above embodiment, a method or apparatus for stacking one end plate at a time has been described, but two or more end plates may be sequentially stacked on the end plate group at the same time.

Although the press band 19 in the said Example was arrange | positioned in parallel with the direction to which a single plate is conveyed by the conveyor 9, you may provide one or more press bands in the direction perpendicular | vertical to the said direction, and accordingly press An air cylinder for the operation of the band may be provided. In addition, the band 19 for pressure may be replaced with another member such as a string, a cord, or a chain that can withstand the tension acting upon lamination according to the present invention.

The pressure band 19 does not have to be horizontal in the standby position, but is directed downward toward the downstream side of the conveyance direction of the end plate 1 conveyed by the conveyor 9 so that no physical collision occurs between the end plate 1 being conveyed and the pressure band 19. It may be extended to be inclined.

The conveyor 9 may be temporarily stopped when the end plate 1 is detected by the sensor 27 at the lamination position, and each bar 15 may be operated while the conveyor 9 is temporarily stopped.

Conveyor 9 for conveying the end plates to the lamination position may be replaced with another suitable conveyor having a suction device 79 as shown in FIG.

The present invention has the effect that the single plate can be conveyed up to the stacking stand without any problem, and the single plate is laminated so as not to deviate in the horizontal direction when it is dropped and stacked, and the impact force applied to the member is small, thereby facilitating maintenance as an apparatus.

Claims (7)

In the lamination method of the single plate provided with four sides and conveyed on a single plate group by a conveyor, By separating the end plates from the conveyor at adjacent stacking positions from the end group, the end plates are separated from the conveyor, The elastic guide member disposed to extend above the end plate so as not to interfere with the end plate conveyed by the conveyor extends so as to be perpendicular to the length of the stretchable guide member in a taut state while the end plate is separated. At least one side of the end plate to be lowered at a rate that can cause friction to press the end plate bent on one side of the end plate falling from the conveyor Lamination method of the end plate, characterized in that. In a lamination apparatus for laminating a single plate having four sides on a single plate group, A conveyor for conveying the end plate in the conveying direction, Means for separating the end plate from the conveyor at an adjacent stacking position on the end plate group; With elastic guide member, The end plate falling onto the end plate group at the standby position of the stretchable guide member disposed to extend above the end plate so as not to disturb the end plate conveyed by the conveyor and at least one side of the end plate extending to be perpendicular to the length of the stretchable guide member. Between the lowered positions of the flexible guide member that is bent to press, the elastic guide member is driven, and the elastic guide member is lowered to the lowered position in a taut state when the end plate falls and at a rate that may cause friction with the falling end plate. Means for driving, A sensor for detecting that the end plate reaches the stacking position and generating a detection signal; A controller for operating the separating means and the driving means based on the detection signal from the sensor so that the end plate is separated from the conveyor and the flexible guide member is lowered toward the lowered position. Laminating apparatus of a single plate comprising a. The method of claim 2, The elastic guide member in the standby position extends in the conveying direction in which the end plate is conveyed by the conveyor, The driving means drives the flexible guide member in the lowered position to bend in order to press the end plate from one side corresponding to the front side of the end plate in the conveying direction of the end plate conveyed by the conveyor. Laminating device of a single plate, characterized in that. The method of claim 3, The drive means comprises a cylinder having an extendable rod, One end of the elastic guide member is connected to the rod of the cylinder Laminating device of a single plate, characterized in that. The method of claim 2, The elastic guide member in the standby position extends in the conveying direction in which the end plate is conveyed by the conveyor, The driving means drives the flexible guide member in the lowered position to bend in order to press the end plate in both the front and the back side of the end plate in the conveying direction of the end plate conveyed by the conveyor. Laminating device of a single plate, characterized in that. The method of claim 5, The drive means includes respective cylinders having extendable rods, Both ends of the flexible guide member are connected to the rods of the respective cylinders. Laminating device of a single plate, characterized in that. The method of claim 3, Further comprising a frame of the lamination device is fixed to both ends of the elastic guide member connected, The drive means includes a cylinder having a rod and a roller extendable at a distal end for driving the flexible guide member to a lowered position through the roller. Laminating device of a single plate, characterized in that.

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