JPH0436882Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a plywood stacking device that stacks a large number of plywood boards (hereinafter referred to as plywood) with a required interval between them.

[Prior Art] Conventionally, as a device for accumulating plate-shaped bodies such as plywood,
For example, as shown in Japanese Utility Model Publication No. 50-37657, a spiral guide plate is provided on the outer periphery, at least three rotating shafts having axes in the vertical direction, and a spiral guide plate is provided at the top end of the guide plate on the rotating shaft. is equipped with a receiving plate that protrudes from the guide plate, and after releasing the plate-shaped body carried in by an intermittently driven roller and transferring it onto the receiving plate of the rotating shaft, the receiving plate is moved as the rotating shaft rotates. There is known a plate-like object transfer device that rotates to release the supporting state of the plate-like object, thereby sequentially transporting and depositing the plate-like objects carried downward while being supported by a guide plate of a rotating shaft. .

[Problems to be solved by the invention] However, in the case of the above-mentioned transfer device, during the period from when the plate-like body is ejected by the rollers disposed in the direction in which the plate-like body is conveyed until it is supported by the receiving plate, The force of inertia allows it to fly freely over long distances.

For this reason, the attitude of the plate-shaped body is disturbed during free flight and it is supported on the receiving plate. As a result, the supporting attitude of the plate-shaped body on the receiving plate is not constant, and the supporting attitude of the guide plate is also inconsistent. There is a problem in that the plate-like bodies cannot be stably transported downward and deposited.

For this reason, even when the above-mentioned transfer device is applied to a plywood stacking device, a similar problem occurs, and the plywood carried in cannot be reliably stacked in a constant posture.

[Purpose of the invention] The present invention was devised to solve the above-mentioned conventional drawbacks, and its purpose is to move the transported plywood in an almost constant posture in the vertical direction perpendicular to the transport direction. An object of the present invention is to provide a plywood stacking device that can reliably stack plywood at predetermined intervals.

[Means for solving the problem] For this reason, the present invention provides a distance shorter than the length of the plywood in the transport direction on the upper and lower sides of the plywood transported in the transport direction, and Screw conveyors on the upper and lower sides that can support the upper and lower sides in the conveyance direction at both ends and are arranged so as to have axes in the vertical direction, and both ends perpendicular to the conveyance direction of the carried plywood. On the side, a pair of hanging members are rotatably supported between a position to support both ends perpendicular to the transport direction of the carried plywood and a position to release the support, and a screen on the lower side. A detection device is placed on the way to the Yukon conveyor and detects when a portion of both ends of the plywood carried in in a direction perpendicular to the transport direction is supported by a hooking member, and a pair of hooking members are installed. A hooking member driving means rotates the screw conveyors on the upper and lower sides between a position where both ends of the plywood are supported perpendicularly to the conveying direction and a position where the supported state is released. a driving means that rotationally drives the plywood in a direction, and a hooking member based on a signal from a detection device output when both ends of the loaded plywood in a direction orthogonal to the conveying direction are respectively supported by a pair of hooking members. a control device that controls the drive means and the drive means to be driven substantially synchronously, to release the support state of the plywood by the pair of hooking members and to transfer the plywood to the rotating upper and lower side screw conveyors; It is characterized by consisting of.

[Operation of the device] Since the present device is constructed as described above, both ends of the carried plywood in the direction orthogonal to the transport direction are supported by the hanging member, and both ends are supported in their entirety. Before the locking member is released, the holding member is released from the supported state by the locking member driving means driven based on a signal from the detection device.

Therefore, the hanging member transfers the carried plywood onto the rotating screw conveyor while moving it in the direction of conveyance and the direction of gravity while supporting part of both ends in the direction orthogonal to the direction of conveyance. .
As a result, a part of the plywood carried in is supported by the hanging member and transferred to the screw conveyor by free flight due to inertia force, so the inertia force is reduced by the frictional force when supported by the hanging member. By shortening the free flight distance, the support attitude of the screw conveyor can be made almost constant.

Then, the plywood supported by the rotating screw conveyor is transferred downward and stacked according to the amount of rotation.

[Embodiment] Hereinafter, an embodiment in which an accumulating device according to the present invention is connected to a plywood repair device will be described with reference to the drawings.

Fig. 1 is a front view schematically showing a plywood accumulation device according to the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a left side view of Fig. 1, and Fig. 4 is a schematic view of Fig. 1. right side view,
FIG. 5 is a perspective view showing the drive mechanism of the stacking device, and a plywood repair device (not shown) is disposed above the stacking device 1 in the conveyance direction. This plywood repair device detects concave defects 3a such as knot holes and hollow holes present on the surface of the plywood 3 being conveyed by a defect detection device (not shown), and then a large number of putty supply devices arranged in a direction perpendicular to the conveyance. (not shown) is a concave defect 3a
The concave defect 3a is repaired by selectively operating according to the condition and discharging putty onto the upper surface of the plywood 3 corresponding to the concave defect 3a. An example of this plywood repair device is disclosed in Japanese Unexamined Patent Application Publication No. 1983-1999 filed by the present applicant.
Since it is described in No. 42081 (plywood repair method), detailed explanation will be omitted.

The main body frame 5 of the stacking device 1 has a pair of front and rear screw conveyors 7, 9 having axes in the vertical direction on the upper side and the lower side in the conveying direction. They are rotatably supported at short intervals and at intervals corresponding to the width of the plywood 3 in the direction perpendicular to the transport direction. As will be described later, the screws of these screw conveyors 7 and 9 are turned at a pitch that corresponds to the stacking interval between the stacked plywood sheets 3, and the upper screws 7a and 9a are set larger than the other screw pitches. ing. Each screw conveyor 7 and 9
Pulleys 11 and 13 are fixed to the upper end of the shaft, respectively.
Toothed belts 15 and 17 are stretched around each pulley 11 and 13. In addition, the shaft portions 7b and 9b of each screw conveyor 7 and 9 located on the upper side in the conveyance direction
Gears 19 and 20 are fixed to the respective parts. Further, clutch/brake mechanisms 23, 24 connected to electric motors 21, 22, which constitute a part of the driving means, are respectively fixed to the upper sides of the main body frame 5 in the transport direction.
Gears 29 and 24 fixed to output shafts 25 and 26
30 are connected to the gears 19 and 20, respectively. Cam bodies 31 and 32, which constitute a part of a latch member driving means, are fixed to the shaft ends of each output shaft 25 and 26, respectively, and are eccentric according to the amount of swing of swing arms 35 and 36, 37 and 38, which will be described later. has been done. The electric motors 21 and 22 are always maintained in their driving state, and the clutch and brake mechanisms 23 and 22 are always maintained in their driving state.
24 causes the screw conveyors 7 and 9 to rotate in the direction of the solid line arrow shown in FIG.

Connecting shafts 33 and 34 having axes in the transport direction are rotatably supported on both sides of the main body frame 5 in the direction perpendicular to the transport direction, and a part of the latching member driving means is mounted at both ends of each of the connecting shafts 33 and 34. Configuring swing arm 3
5, 36, 37, and 38 are fixed. And each swinging arm 35, 3 located on the upper side in the conveyance direction
Cam balls 39 and 40 are fixed to 7, respectively, and the cam bodies 31 and 32 are fixed to the cam balls 39 and 40, respectively.
The cam surfaces are in sliding contact. In addition, one end of the tension springs 41 and 42, whose other ends are engaged with the main body frame 5, is engaged with each of the swing arms 36 and 38 on the downstream side in the conveyance direction, and the elastic force of the tension springs 41 and 42 causes the swing arms 36 and 38 to The movable arms 36 and 38 are urged in the direction of the solid arrow shown in FIG. Between the respective swing arms 35, 36, 37, and 38 on both sides in the conveyance direction, hanging members 43 and 45, which are open on the inside and have a substantially U-shaped cross section, are opposed to each other at positions corresponding to the upper screws 7a and 9a, respectively. installed to do so. Then, the plywood 3 is carried into each of the hanging members 43 and 45. A plywood detection device 46 such as a phototube or a limit switch is installed between the screw conveyors 9 on the downstream side in the conveyance direction, and the plywood detection device 46 outputs a plywood detection signal when the front end of the carried plywood 3 in the conveyance direction passes. Output. and each clutch/brake mechanism 2
3.24 operates based on the plywood detection signal,
Rotate the output shafts 25 and 26 in the required direction. Further, as shown in FIG. 2, a stopper 6 is attached to the lower side of the main body frame 5 in the conveyance direction so as to come into contact with the front end of the plywood 3 carried into the stacking device 1 in the conveyance direction. This stopper 6 regulates the feeding force in the conveying direction that acts on the plywood 3 when the plywood 3 supported by each screw is sent downward as the screw conveyors 7 and 9 rotate, and supports the plywood by the screws. The condition is maintained.

Heating devices 47 are arranged in multiple stages on the sides of each of the screw conveyors 7 and 9. This heating device 47 heats a large number of plywood sheets 3 supported at required intervals by the screws of the screw conveyors 7 and 9 using the heat of the steam passing through the inside, and heats the plywood sheets 3 according to the concave defects 3a. The putty discharged onto the surface is dried and hardened. In addition, as for the degree of drying of the putty, the plywood 3 is
The cured state may be such that they do not adhere to each other.

A discharge conveyor 49 is arranged below each screw conveyor 7 and 9. As the screw conveyors 7 and 9 rotate, this carry-out conveyor 49 releases the support by the screws and carries out the transferred plywood 3 to a subsequent process.

Next, a control outline of the integrated device 1 configured as described above will be explained with reference to FIG.

FIG. 6 is an electrical block diagram showing the outline of control of the stacking device 1, and the plywood repair device is connected to the control device 71. Further, the control device 71
A plywood detection device 46 is connected to. When the plywood detection signal is input from the plywood detection device 46, the control device 71 controls the clutch/brake mechanism 2.
3 and 24 for the required time to rotate the screw conveyors 7 and 9 in the required direction, and also rotate the swinging arms 35, 36, 37, and 38 in the direction in which they are separated from each other, so that the plywood 3 is hung. From the stop members 43 and 45 to the upper screws 7 of the screw conveyors 7 and 9
Transferred to a.9a. And the hanging member 43.4
5 returns to its original position, the rotation of the locking members 43 and 45 and the driving of the screw conveyors 7 and 9 are stopped.

The control device 71 is provided with a shift register 71a having storage positions corresponding to the number of stacked sheets of the stacking device 1, and the plywood 3 that has passed through the plywood repair device has concave defects 3a in each storage position of the shift register 71a. The plywood data indicates whether the plywood has been repaired with putty, the plywood is unrepairable due to parts of the original plywood overlapping into a protruding shape, or the plywood is defect-free without concave defects 3a. By sequentially storing the data, plywood processing in the subsequent process can be performed smoothly based on the plywood data.

Next, the operation of the integrated device 1 constructed as described above will be explained with reference to FIGS. 7 and 8.

In FIG. 7 showing the state in which the plywood 3 is carried into the hanging members 43 and 45, and FIG. 8 showing the state in which the plywood 3 is supported by the screw conveyors 7 and 9, the repaired plywood that has passed through the plywood repair device, When unrepairable plywood or plywood without concave defects 3a is continuously carried into the stacking device 1, each plywood 3 is received at both ends in the direction orthogonal to the conveyance by the latching members 43 and 45. When the front end of the plywood 3 in the transport direction passes through the plywood detection device 46 during the transport,
The clutch/brake mechanisms 23 and 24 are activated based on the plywood detection signal output from the plywood detection device 46.
is operated for a required time depending on the amount of downward feed of the plywood 3, and applies the driving force of the electric motors 21 and 22 to the output shafts 25 and 26. As a result, each screw conveyor 7, 9 rotates in the direction of the solid line arrow shown in FIG. Rotate and hang members 43 and 45
separate from each other. As a result, the plywood 3 supported by the screws of the screw conveyors 7 and 9 is sent downward, and the plywood 3 carried into the latching members 43 and 45 moves in the conveying direction while moving the screw conveyors 7 and 9. Upper screws 7a and 9a
Supported for transfer to. In addition, the upper screws 7a and 9
Even after the plywood 3 is transferred to a, the screw conveyors 7 and 9 continue to rotate slightly, so
The plywood 3 supported by the upper screw conveyors 7a and 9a is sent downward by the rotation of the screw conveyors 7 and 9. Furthermore, the hanging members 43 and 45 are rotated to their original positions, and the next plywood 3 is carried in.

By repeating the above operation, the plywood 3 continuously carried in is once received by the latching members 43 and 45, and then the screws of the screw conveyors 7 and 9 provide a required interval between them according to the screw pitch. They are stacked while being supported in an upright position. When stacking by the screw conveyors 7 and 9, each plywood 3 supported by each screw is heated by the heating device 47 and the concave defects 3 are heated by the heating device 47.
The putty discharged onto the surface of the plywood 3 according to step a is dried and hardened.

On the other hand, as the screw conveyors 7 and 9 rotate, the plywood 3 supported by the screw conveyors 7 and 9 at the lowest stage is released from support by the screw conveyors 7 and 9, and is transferred to the carry-out conveyor 49.
After being transferred to the top, the carrying out conveyor 49 is driven to carry out the stacking device 1.

In this way, in this embodiment, the loaded plywood 3 is supported by the hanging members 43 and 45 while being moved in the transport direction, and the supported state is released at the timing when the tip of the plywood 3 passes the plywood detection device 46. Since the plywood 3 is transferred to the screw conveyors 7 and 9, the free flight distance can be shortened while the inertia force acting on the plywood 3 is reduced by the frictional force with the latching members 43 and 45. It is possible to transfer and stack onto the screw conveyors 7 and 9 while maintaining the carry-in attitude.

In the above description, the screw conveyors 7 and 9 and the swing arms 35, 36, 37, and 38, which are arranged in the direction orthogonal to the conveyance direction of the plywood 3, are synchronously driven by separate clutch/brake mechanisms 23 and 24. However, each screw conveyor 7, 9 is integrally connected by a toothed belt 15, 17, and each screw conveyor 7, 9 and swing arm 35, 3 are connected by a single electric motor and clutch/brake mechanism.
6, 37, and 38 may be driven synchronously.

In addition, each screw conveyor 7, 9 and swing arms 35, 36, 37,
38 are fixedly arranged at intervals corresponding to the width of the plywood 3 in the orthogonal conveyance direction. By attaching the plywood board 3 such that its position can be changed in the direction perpendicular to the transport direction, it is possible to stack various types of plywood 3 having different widths in the direction perpendicular to the transport direction while providing a required interval between them.

[Effect of the invention] Therefore, the present invention provides a plywood stacking device that can reliably stack carried plywood in a substantially constant posture at predetermined intervals in the vertical direction orthogonal to the transport direction. is possible.

[Brief explanation of the drawing]

Fig. 1 is a front view schematically showing a plywood accumulation device according to the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a left side view of Fig. 1, and Fig. 4 is a schematic view of Fig. 1. right side view,
Fig. 5 is a schematic perspective view showing the outline of the drive mechanism;
The figure is an electrical block diagram showing the outline of control of the integrated device, and FIGS. 7 and 8 are explanatory diagrams showing the operation of the integrated device. In the figure, 1 is an accumulation device, 3 is a plywood board, 7 and 9 are screw conveyors, 21 and 22 are electric motors that form part of the drive means, and 23 and 24 are clutch and brake mechanisms that form part of the drive means. , 31・32
3 is a cam body constituting a part of the hooking member driving means;
Reference numerals 5, 36, 37, and 38 are swing arms that constitute a part of the locking member driving means, and 43 and 45 are locking members.

Claims (1)

[Scope of Claim for Utility Model Registration] Transportation of the veneer plywood at both ends in the direction orthogonal to the transportation direction, with an interval shorter than the length of the veneer plywood in the transportation direction on the upper and lower sides of the veneer plywood transported in the transportation direction. Screw conveyors on the upper and lower sides are capable of supporting the upper and lower sides in the direction and are arranged so as to have axes in the vertical direction, and on both end sides perpendicular to the conveyance direction of the plywood carried in, A pair of latching members are rotatably supported between a position to support both ends perpendicular to the conveyance direction of the plywood carried in and a position to release the support, and a screw conveyor on the lower side. A detection device is placed along the way to detect when a part of both ends of the plywood carried in in a direction perpendicular to the transport direction is supported by a hanging member, and a pair of hanging members are placed on the conveyance direction. A latch member driving means for rotating between a position where both ends perpendicular to the conveying direction of plywood are supported and a position where the supported state is released, and a screw conveyor on the upper and lower sides is moved in a predetermined direction. a driving means for rotationally driving the veneer plywood, and a latching member based on a signal from a detection device that is output when both ends of the carried plywood in a direction orthogonal to the conveyance direction are respectively supported by a pair of latching members. A control device that drives the drive means and the drive means almost synchronously, releases the support state of the veneer plywood by the pair of hanging members, and controls the plywood to be transferred to the rotating upper and lower screw conveyors. A veneer plywood accumulation device characterized by comprising: and.