JPH0226566B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for changing the direction of a veneer veneer.

Conventionally, in plywood factories, the means to change the conveyance direction of veneer veneer (hereinafter simply referred to as veneer) by conveying it in a direction perpendicular to the fibers is to use a conveyor mechanism such as a conveyor that conveys the veneer. There is no specific means other than to provide the veneer in a refracted shape, and the degree of refraction is limited to the extent that the veneer is not damaged by the refraction. Although it is possible to automate and rationalize a veneer processing factory by connecting them with a transport mechanism equipped with
Connecting mechanical devices that transport veneers in significantly different directions requires an extremely large amount of space, so it is virtually impossible to connect them in the current cramped plywood factories, so each type of mechanical device must be installed independently. At the same time, the extremely irrational process of dividing the veneers into predetermined lengths, stacking them, transferring them while changing the direction of each pile, and then manually taking out the veneers one by one from the pile. The current situation is what is happening.

The present invention utilizes the characteristics of veneer that is extremely flexible in the direction orthogonal to the fibers, and provides a veneer direction changing device that can arbitrarily change the conveying direction of veneer in an extremely narrow space. The purpose is to facilitate the connection of various mechanical devices in plywood factories, and to automate and rationalize veneer processing factories.

The present invention will be described below based on an example of implementation illustrated in the drawings.

The apparatus according to the present invention moves the veneer in a direction orthogonal to the fibers, as illustrated in FIGS. 1 and 2, 5 and 6, 7 and 8, or 9 and 10. A first conveyance mechanism and a second conveyance mechanism whose conveying directions are different, for example, a conveyor belt 1.
The first of the loading conveyor M etc. consisting of the conveyor shaft 2 etc.
It is arranged at a relay position between the conveyance mechanism and a second conveyance mechanism such as an output conveyor N consisting of a conveyor belt 3, a conveyor shaft 4, etc., and changes the conveyance direction of the veneer T conveyed in a direction perpendicular to the fibers. Yes, first
The device according to the second invention will be described in detail.

In the embodiment illustrated in FIGS. 1 and 2, 5
is a winding shaft for winding up the veneer T, which is fitted with sliding bearings 6 at both ends, inserted into the groove 9a of the lifting stand 9, and is rotated through a drive shaft pivotally attached to the lifting stand 9. It is placed on a drive pulley 17 which is rotated in forward and reverse directions by a drive device (not shown) such as a motor or an electromagnetic clutch brake. A guide belt 7 is an embodiment of a veneer guide member that guides the veneer T around the outer periphery of the winding shaft 5, and is attached to fixed arms 10, 11 fixed to the lift stand 9 and pivoted to the fixed arm 11. Belt guide shafts 8a, 8b, 8 pivotally connected to the attached swing arm 12, respectively.
c, 8d, 8e, 8f, and 8g, and substantially attached to the winding shaft 5 so that the veneer travels while contacting the outer periphery of the winding shaft 5, leaving an appropriate length for the veneer to pass through. attached in one piece. 13 is a tension roll, which is connected to a weight 15 or a spring/fluid cylinder (not shown) via a moving metal 14.
Attach a tension member such as Reference numeral 20 denotes a support base that supports the reeling unit A made up of the above-mentioned members, and includes a fulcrum pin 18 and a swing bearing 1.
9, the reeling unit A is rotatably supported. In the figure, reference numeral 21 denotes a turning mechanism such as a rotary cylinder or worm gear connected to the fulcrum pin 18 of the reeling unit A and the support base 20 in order to force the reeling unit A to turn.

For example, according to the apparatus configured as described above, the veneer T conveyed by the incoming conveyor M in a direction perpendicular to the fibers is moved around the winding shaft 5 by the belt 7, as is clear from FIG. Once the reeling unit A is guided around the outer periphery, the reeling unit A is rotated in a direction to be connected to the unloading conveyor N, and then the reeling shaft 5 is reversed, as is clear from FIG. 4. By sequentially unwinding the veneers T onto the carry-out conveyor N, it is possible to easily change the conveyance direction of the veneers T to be conveyed in a direction perpendicular to the fibers.

The veneer is a material with remarkable anisotropy, and while it is strong in the same direction as the fibers, it is flexible in the direction perpendicular to the fibers, and if necessary, the veneer may have many small cracks. It is also possible to impart remarkable flexibility through the so-called tenderizing process that forms the fibers, making it easy to wind them in the direction perpendicular to the fibers.
Since the device according to the present invention utilizes its characteristics to change the conveyance direction after winding as described above, it is possible to change the conveyance direction of a long veneer to any direction in a narrow space. For example, the combination of veneer lace and a roll dryer, or a roll dryer and a veneer cross-cutting machine, etc., can be done in various ways that were previously considered difficult because the conveyance direction (processing direction) of the veneer is significantly different. It becomes possible to connect mechanical devices, and by connecting them, it is possible to automate and streamline the veneer processing process.

In the embodiment illustrated in FIGS. 5 and 6, 2
Reference numeral 2 denotes a support arm for the auxiliary conveyor S, which is composed of a drive shaft 16, a drive pulley 17, guide pulleys 23 and 24, a guide belt 25, etc., and also serves as a driver for the winding shaft 5. The proximal end is fixed to a swing base 26 which swingably holds the winding shaft 5 via the winding shaft 5. Reference numeral 29 is a guide body such as a chain having flexibility, and is rotatably attached with a large number of guide rollers 30, which are another embodiment of the single-plate guide member, and is rotated by a fixed arm 31 fixed to the rotating base 26. One end is pivotally attached to the tip of the swinging arm 32 which is pivotally supported by the veneer, and is wrapped around the outer periphery of the winding shaft 5, leaving a suitable length for the veneer to pass through. If necessary, a tension member such as a weight is attached to the other end. Reference numeral 33 denotes a column that rotatably supports the reeling unit B made up of the above-mentioned members. Furthermore, the drive shaft 16
For the sake of convenience, the illustration of a drive device for driving the motor in forward and reverse directions is omitted.

In this example, as in the previous example, the veneer conveyed by the carry-in conveyor M in the direction orthogonal to the fibers is once wound up by the reeling unit B, and then the reeling By rotating the unit B in the direction in which it is connected to the delivery conveyor N and then performing the unwinding process, the conveying direction of the veneer can be easily changed.

In the embodiment illustrated in FIGS. 7 and 8, 3
4 is a winding shaft 5 consisting of a main shaft 5a and a drum 5b.
A bearing box that pivotally supports one end, for example, a chain wheel 3.
The winding shaft 5 is fixed on a base 40 which also serves as a mounting base for a drive device 39 that drives the winding shaft 5 in forward and reverse directions through transmission members such as 6, 38 and a chain 37. A holding metal 35 holds the side end portion of the base 40, and is pivotally connected to the main shaft 5a of the winding shaft 5. Reference numeral 41 denotes a linear body which is another embodiment of the veneer guide member, and is arranged on the base so that it runs while contacting the outer periphery of the drum 5b, leaving an appropriate length for the veneer to pass through. 40
The guide pulleys 45 are mounted on an appropriate number of guide pulleys 45 that are respectively pivotally connected to the fixed arms 42 and 43 attached to the fixed arms 43 and the swing arm 44 that is pivoted to the fixed arms 43, and attached substantially integrally to the winding shaft 5. do. Numeral 46 is a spring that urges the tip of the swinging arm 44 in the direction of the axis of the winding shaft 5, and is attached to the swinging arm 44 and the fixed arm 43 in a connected manner. Reference numeral 47 denotes a sliding bearing 6 of the reeling unit C composed of the above-mentioned members.
It is a support rail that supports the sides, and is supported by an appropriate number of rail stands 48.

In this embodiment, as in the previous embodiment, the veneer conveyed by the carry-in conveyor M in the direction orthogonal to the fibers is once wound up by the reeling unit C, and then the reeling unit By rotating the veneer C in the direction of connecting it to the delivery conveyor N and then performing the unwinding process, the conveyance direction of the veneer can be changed arbitrarily.

As is clear from the above embodiments, the reeling unit is not limited to a specific form;
In short, in order to wind up and unwind the veneer, there is a winding shaft that is arranged so that it can rotate forward and backward, and an appropriate space that allows the veneer to pass through, in order to guide the veneer around the outer periphery of the winding shaft. 〓
The veneer guide member disposed on the outer periphery of the winding shaft except for a portion of the veneer is connected substantially integrally with the veneer guide member, so that the veneer can be wound on the winding shaft once and then unwound after turning. It is good as long as it is
It goes without saying that most of the members in each of the above embodiments can be replaced with each other, and various modifications and applications can be made in addition to the forms exemplified in each of the above embodiments.
These will be explained in more detail below.

First, to drive the winding shaft, as in the embodiments illustrated in Figs. 1 and 2 or 5 and 6, a drive pulley, auxiliary conveyor, etc., which are rotated forward and backward by an appropriate drive device, etc. Means for driving indirectly by a drive device, or means for driving directly by a suitable drive device as in the embodiment illustrated in FIGS. Various methods are available, such as indirect driving via a . However, in any case, the winding and unwinding speeds do not necessarily have to be the same speed, and of course correspond to (synchronize with) the drive of each transport mechanism. It does not matter whether it is continuous drive or intermittent drive. In addition, when directly driving the winding shaft, due to conditions such as the veneer being continuous and thick, the outer peripheral speed may change due to changes in the outer diameter of the rolled ball during winding and unwinding. If there is a possibility that the winding shaft may have an adverse effect on the processing, it is effective to make the winding shaft relatively large in diameter to reduce changes in the peripheral speed, or to use a drive device with variable speed, such as a DC motor, to increase the winding speed. It is more effective to change the rotational speed of the winding shaft so that the peripheral speed of the ball remains approximately constant.

Next, regarding the veneer guide members, various types of belts such as flat belts, round belts, and V belts, various linear bodies such as thin metal wires, threads, and strings, and furthermore, in addition to guide rollers, thin chains, etc. Also, if the veneer is relatively thick and strong in the direction perpendicular to the fibers, a spiral spring (mainspring) may be provided so that it can be freely extended and retracted, but in any case, the It is preferable that the number of strips and the position of the veneer guide member be appropriately selected depending on the width of the veneer guide member or the shape of the veneer. It would be even more convenient.

Next, the support member for supporting the reeling unit is not limited to any particular form, and may be any form as long as it can support the reeling unit in a rotatable manner. Also, when rotating the reeling unit,
As exemplified in each embodiment, if a turning mechanism is provided to force the turning, it is easier than turning manually, and furthermore, although not shown in the drawings,
Activation of the drive device and rotation mechanism based on start/stop signals for the loading/unloading conveyor, that is, each transport mechanism, and veneer arrival/passage signals from veneer detectors consisting of limit switches, etc. attached to each transport mechanism. - It would be even more convenient if a control device for controlling the stoppage is provided, and the reeling unit is automatically rotated by operating a turning mechanism for each process under the control of the control device.

Further, as the turning mechanism, in addition to a rotary cylinder and a worm gear, a known turning mechanism capable of turning an object such as a cam, a rack and pinion gear, a motor with a reduction gear, etc. can be used.

In addition, since the swing angle of the reeling unit can be set arbitrarily, and the swing form can be either reciprocating swing or rotational swing, it is possible to change the swing angle stepwise in multiple stages. It is also possible to alternately unwind the veneer rolled up from the first conveyance mechanism to a plurality of second conveyance mechanisms, so to speak, third, fourth, etc., or vice versa. It is also possible to change the conveyance direction of the veneers brought in from a plurality of directions into one direction, and of course it is also possible to change the conveyance direction of veneers brought in alternately from a plurality of directions into a plurality of directions. Also, Figure 1, Figure 2 or Figure 5
In the embodiment illustrated in FIGS. 7 and 6, a head is provided between each transport mechanism and the reeling unit so that they can replace each other, but in the embodiment illustrated in FIGS. The conveying mechanism can be moved up and down as in the example, or it can be moved back and forth (though not shown), or the arm on the reeling unit side can be moved up and down or reciprocated. If the head is eliminated, veneer conveyance (handling and receiving) will be easier.
It is preferable that it can be done smoothly. Further, although not shown in the drawings, if necessary, a gripper may be provided on the first conveying mechanism side, and extremely long veneers may be divided into appropriate lengths for processing.

Next, the device according to the second invention of the present invention rotatably supports a reeling unit having the same configuration as that described in the device according to the first invention by a plurality of supporting members. and a turning mechanism for turning the plurality of reeling units, and a control device for controlling the operation of the turning mechanism, and for sequentially moving each reeling unit to the first transport mechanism and the second transport mechanism. The conveyance direction of the veneer can be changed in a more complete manner by connecting them, and will be described in detail below with reference to the drawings.

In the embodiment illustrated in FIGS. 9 and 10,
C ₁ and C ₂ are reeling units having the same configuration as the above-mentioned reeling unit C, and one reeling unit C ₁ is connected via a fulcrum pin 18a attached to a base 40a and a swing bearing 19a. , and the other reeling unit _C2 has a fulcrum pin 18b attached to the base 40b and a swing bearing 19b.
It is rotatably supported by a support base 20 via a support base 20, and each is provided with a rotation mechanism 21a, 21b. Reference numeral 49 denotes a veneer detector disposed at an appropriate position in each transport mechanism, which includes a limit switch, a photoelectric switch, etc., and detects the arrival and passage of a veneer T and issues a signal to a control device 50, which will be described later. 50 controls the operation of the turning mechanisms 21a and 21b, based on the signal emitted from the veneer detector 49, so as to connect each reeling unit C ₁ and C ₂ to the carry-in conveyor M and the carry-out conveyor N in sequence. It is a control device.

When the veneer _T1 is conveyed in a direction perpendicular to the fibers by the carry-in conveyor M, it is first transferred to one of the reeling units, e.g.
When the single plate detector 49 detects the passing of the terminal end of the winding process by C ₁ , the turning mechanism 21a is operated under the control of the control device 50 based on the detection signal, and the reeling mechanism 21a is activated. Unit C ₁
is connected to the unloading conveyor N, and the rotation mechanism 2
1b operates to connect the reeling unit _C2 to the carry-in conveyor M, and while the veneer _T1 stored in the reeling unit _C1 is being rewound to the carry-out conveyor N, the reeling unit C2 is connected to the carry-in conveyor M. Another veneer _T2 that is transported is sequentially wound up by the reeling unit _C2 . Thereafter, by repeating the same operation, the conveying direction of the veneer is sequentially changed.

Since there is only one reeling unit in the apparatus according to the first invention mentioned above, the veneer that has been once wound up must be unwound before another veneer that follows it turns. However, with the device according to the second invention, the conveying direction of the veneer could only be changed intermittently, so there was a slight lack of productivity. As described below, we have made it possible to sequentially process veneers using multiple reeling units, so the conveyance direction of the veneer can be changed almost in a connected manner, resulting in efficient productivity improvement with no loss time. The effect of this is extremely large in practical terms for connecting various mechanical devices.

In addition, the reiring units of the second invention are the same configuration as the reiring units described in the description of the device according to the first invention, that is, wrapping and rewinding vodes. In order to achieve this, a veneer guide member disposed on the outer periphery of the winding shaft is substantially integrated with the winding shaft, which is disposed so as to be rotatable in forward and reverse directions, leaving an appropriate space for the veneer to pass through. As mentioned above, multiple reeling units do not necessarily have to have the same configuration.
As long as there is no problem with connection, it may be changed as appropriate.

Furthermore, in the above embodiment, a plurality of reeling units are arranged on the same plane, but if necessary, means such as providing each conveyance mechanism etc. so as to be movable vertically or longitudinally as described above may be provided. It is possible to arrange multiple reeling units one above the other in the vertical direction as long as consideration is taken to ensure that there is no problem in transferring and receiving the veneers. If a spare (redundant) reeling unit is provided in addition to the reeling unit, for example, discrepancies in winding and rewinding processing times that often occur when at least one of the transport mechanisms is driven intermittently can be avoided. By using the spare reel, it is possible to prevent the processing from being interrupted due to a discrepancy in the processing time due to a difference in the length of the treated veneer or the length of the processed veneer. This is even more effective because direction changes can be made without interruption even if the numbers do not match. In addition, if the angle at which the conveyance direction of the veneer is changed is an integer fraction of 360 degrees, such as 60 degrees, 90 degrees, 120 degrees, etc., and the processing times are almost the same, then It is also possible to arrange the ring units in a connected manner so that the integer number of reeling units can be simultaneously rotated by one rotation mechanism.

Further, in the above embodiment, the control device controls the turning mechanism based on the detection signal from the single plate detector, but the signal source is not limited to the single plate detector, and the signal source is not limited to the single plate detector. Although omitted, for example, it is necessary to attach a transmitter such as a transducer to the winding shaft of the reeling unit to count the veneer transport signals from each transport mechanism, or to measure the outer diameter of the bobbin around the winding shaft. There is no problem in attaching a winding detector such as a limit switch to detect the presence or absence of a winding shaft. It is also possible to share the start/stop signal, and in short, it can be used as a signal to the control device if it is a signal that detects the end of the winding process and rewinding process of each reeling unit, or a signal that can be predicted. can.

Next, as an application example of the device according to the present invention, there is a known reinforcement method for reinforcing or joining a continuous or discontinuous veneer by winding it together with an adhesive such as gummed tape.・It can also be used as a winding means in the joining method, especially for the winding process of veneer as disclosed in "Method for winding veneer veneer" (Japanese Patent Application Laid-open No. 164105/1983). Sometimes, a continuous veneer is rolled up with a continuous adhesive that can be bonded to two sides, and the terminal end of the continuous adhesive is bonded only to either the outer circumferential surface or the inner circumferential surface of the wound veneer. By doing this, it is possible to unwind the continuous adhesive material while it is adhered to the desired side of the veneer.
(Japanese Patent Application No. 56-21834 (Japanese Unexamined Patent Publication No. 57-137102)
As disclosed in , at least one of the wire rods that can be bonded to the veneer is wound together with the veneer, and then when unwinding, the veneer peels off from the rolled ball. By unwinding one wire rod with one wire rod positioned on the veneer side and the other wire rod on the winding ball side, the wire rod that can be bonded is wound and processed with the wire rod adhered to the desired side of the veneer. Therefore, regardless of which method is used, it is convenient because it can change the conveying direction of the veneer and also strengthen and join the veneer with an inexpensive adhesive. Since there is no problem even if the veneer is discontinuous, when processing a discontinuous veneer using the apparatus according to the present invention, it is possible to prevent the possibility of disorder in the arrangement of individual veneers during the unwinding process. It is effective in preventing

As is clear from the above, according to the apparatus according to the present invention, the conveying direction of the veneer can be easily changed to any direction in an extremely narrow space, and therefore various mechanical devices, which have conventionally been considered difficult due to the difference in processing direction, can be used. This will greatly contribute to the automation and rationalization of the veneer processing process at plywood factories.

[Brief explanation of drawings]

The drawings are for explaining the present invention, and FIG. 1 is a plan view of a device according to the first aspect of the present invention, FIG. 2 is a partially cutaway side view of FIG. 1, and FIG.・
FIG. 4 is a side explanatory view for explaining the operating state of the device illustrated in FIGS. 1 and 2, and FIGS. 5 and 7 are other embodiments of the device according to the first aspect of the present invention. A plan view of the example, FIG. 6 is a side view of FIG. 5, FIG. 8 is a side view of FIG. 7, and FIG. 9 is a schematic plan view schematically illustrating the device according to the second invention of the present invention. 10 is a partially broken enlarged view of the section XX in FIG. 9. A, B, C, C ₁ , C ₂ ... reeling unit,
M... Loading conveyor, N... Carrying out conveyor, S...
...Auxiliary conveyor, T, T ₁ , T ₂ ...Single plate, 5...
Winding shaft, 7...Guide belt, 20...Support base, 21, 21a, 21b...Swivel mechanism, 26...
... Swivel base, 29 ... Guide body, 30 ... Guide roller, 33 ... Support column, 39 ... Drive device, 40,
40a, 40b... Base, 41... Linear body, 47
...Support rail, 49...Single plate detector, 50...
Control device.

Claims (1)

[Claims] 1. A veneer veneer disposed at a relay position between a first conveyance mechanism and a second conveyance mechanism having different conveyance directions, in order to change the conveyance direction of the veneer veneer while conveying the veneer in a direction perpendicular to the fibers. It is a board direction changing device, in order to wind up and unwind the veneer veneer, and to guide the veneer veneer around the outer periphery of the winding shaft, which is disposed so as to rotate freely in forward and reverse directions. A reeling unit comprising a veneer guide member such as a guide belt or a guide roller disposed around the outer periphery of the winding shaft, leaving an appropriate distance for the veneer to pass through, and a veneer guide member such as a guide belt or a guide roller is substantially integrally attached to the reeling unit. A veneer veneer direction changing device comprising: a support member that rotatably supports the reeling unit so as to connect the reeling unit to the first transport mechanism and the second transport mechanism. 2. A veneer veneer direction changing device disposed at a relay position between a first conveyance mechanism and a second conveyance mechanism having different conveyance directions, in order to change the conveyance direction of the veneer veneer while conveying the veneer in a direction orthogonal to the fibers. In order to wind up and unwind the veneer veneer, the veneer veneer passes through a winding shaft which is arranged so as to be able to rotate forward and backward in order to guide the veneer veneer around the outer periphery of the winding shaft. A reeling unit consisting of a single-plate guide member such as a guide belt or a guide roller disposed on the outer periphery of the winding shaft, leaving the outer part as long as possible, is attached above and below or on the same plane. a support member that rotatably supports the plurality of reeling units, in order to connect each of the plurality of reeling units to the first conveyance mechanism and the second conveyance mechanism; In order to forcibly rotate the plurality of reeling units, a rotation mechanism is attached to the support member and the reeling unit in a connected manner, and the plurality of reeling units are sequentially connected to the first conveyance mechanism and the second conveyance mechanism. A veneer veneer direction changing device, comprising: a control device for controlling the operation of the turning mechanism so as to be connected to the turning mechanism;