JP4311516B2 - Resin removal device in veneer veneer conveyor - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention is a resin that removes resin (s) attached to an endless veneer conveying belt mounted on a veneer conveying device that conveys a veneer veneer (hereinafter referred to as a veneer) cut by a veneer lace. The present invention relates to a removing device.
[Problems to be solved by the invention]
[0002]
As the single-plate conveying device, a driving roll and a driven roll having predetermined intervals and arranged in parallel with each other (in the present invention, the driving roll and the driven roll are a plurality of rotations for each of the driving shaft and the driven shaft). 2. Description of the Related Art Generally, a belt conveyance device is known in which a plurality of endless conveyance belts are stretched over a body including a structure in which a body is divided and attached in a state of being divided in an axial direction.
[0003]
In this belt conveyance device, in order to apply a sufficient frictional force from the drive roll to each conveyance belt, tension is applied by pressing the tension roll to a location where the single plate of each conveyance belt is not conveyed.
[0004]
However, a veneer cut from a veneer lace conveyed by these conveyor belts, especially a veneer cut from a conifer such as larch or radiata pine, contains a large amount of resin, so the veneer resin is After adhering to the conveyance surface of each conveyance belt in the middle of conveyance, it is transferred to the outer peripheral surface of the tension roll that is in pressure contact therewith.
[0005]
The resin transferred to the outer peripheral surface of each tension roll is gradually cured with time to increase the substantial outer diameter of the tension roll. Excessive tension is applied to the conveyor belt, and the conveyor belt is worn out in a short time and has a problem of being easily cut.
[0006]
When the conveyor belt breaks, it is a matter of course that the veneer processing must be interrupted and the conveyor belt must be replaced. This replacement operation takes time and deteriorates the veneer processing efficiency. It was.
[0007]
Further, as described above, when the substantial outer diameter is increased by adhering to each tension roll and curing, a part of the adhering and curing resin is lost due to the frictional force with the conveyor belt, and the tension roll substantially The outer diameter is partially different. As a result, the tension applied to the conveyor belt becomes too small even during one rotation of the tension roll, the conveyor belt conveyance speed is not constant, and the conveyance posture of the single plate is disturbed.
[0008]
The present invention has been invented in order to solve the above-described conventional drawbacks, and a problem to be solved by the present invention is to effectively remove the resin from a single plate adhering to the conveyor belt and to reduce the tension on the conveyor belt. It is an object of the present invention to provide a resin removing device in a single plate conveying apparatus that allows a single plate to be conveyed by operating with a fluctuation range that does not hinder plate conveyance.
[0009]
Another object of the present invention is to provide a resin removing device in a single plate conveying apparatus that can effectively prevent a disturbance in the conveying posture of a single plate by running a plurality of conveying belts substantially uniformly.
[0010]
Another object of the present invention is to provide a veneer conveying apparatus that can effectively prevent breakage of the conveying belt due to excessive tension acting on each conveying belt and can convey the veneer stably over a long period of time. An object of the present invention is to provide a resin removing device.
[0011]
[Means for Solving the Problems]
The present invention relates to a single-plate transport device that transports a single plate by a single-plate endless transport belt that runs on a plurality of strips that are stretched over a plurality of rotating bodies that are at least one of which is driven to rotate. A removal belt stretched between support members disposed at a predetermined interval is provided in pressure contact with a single plate conveyance surface of the single plate endless conveyance belt that travels on the belt.
[0012]
Resin adhering to the single plate endless conveyance belt accompanying the conveyance of the single plate is transferred to the removal belt that is in pressure contact with the single plate endless conveyance belt, and is also transferred when the traveling direction of the removal belt is turned by the support member. Allow the cured resin to peel off.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2, a veneer conveying device 1 conveys a veneer 3 cut by a veneer lace (not shown) to a subsequent process, and a frame (not shown) has a frame (not shown) with respect to the conveying direction. The drive shaft 5 and the driven shaft 7 having an axis line in the direction perpendicular to the conveyance direction are rotatably supported.
[0014]
A plurality of drive rotators 9 and driven rotators 11 (FIG. 1 shows three cases) are attached to the drive shaft 5 and the driven shaft 7 so as to face each other at a predetermined interval in the axial direction. An endless veneer conveying belt 13 is wound around the drive rotator 9 and the driven rotator 11.
[0015]
An electric motor (not shown) is connected to the drive shaft 5, and each single-plate transport belt 13 travels in the direction of the solid line arrow shown in FIG. 1 by a drive rotator 9 that rotates as the electric motor is driven. Let Further, the drive shaft 5 and the drive rotator 9, and the driven shaft 7 and the driven rotator 11 may be formed of a single roll body.
[0016]
Each single plate conveying belt 13 conveys the single plate 3 on the upper side shown in the figure, and does not convey the single plate 3 on the lower side, but is close to the drive shaft 5 of the single plate conveying belt 13 that travels in a place where the single plate 3 is not conveyed. Supporting rotating bodies 15 that are in pressure contact with portions of the single plate conveying belt 13 that do not convey the single plate 3 are rotatably supported by the respective frames, and the corresponding frame between each supporting rotating body 15 and the drive shaft 5 is supported by the frame. Resin removing devices 17 are respectively attached.
[0017]
Each resin removing device 17 includes a first rotatable member 19 that constitutes one support member and a second support member that is rotatably supported below the veneer conveyor belt 13. The second rotating body 21 and a removal belt 23 stretched between the first and second rotating bodies.
[0018]
As shown in FIG. 2, a removal belt 23 is provided in pressure contact with the conveyance surface of the single plate conveying belt 13 in order to apply tension by increasing the winding angle of the single plate conveying belt 13 around the drive rotator 9.
[0019]
The outer diameters of the first and second rotating bodies 19 and 21 are not particularly limited. For example, when the second rotating body 21 has an outer diameter of about 100 mm, it adheres to the removal belt 23 as described later. The cured resin 25 can be peeled off efficiently.
[0020]
The first rotating body 19 applies a predetermined tension to the single plate conveying belt 13 by bringing the removal belt 23 spanned between the first rotating body 21 and the conveying surface of the single plate conveying belt 13 into pressure contact. At the same time, the resin 25 of the single plate 3 attached to the single plate conveyance belt 13 is transferred.
[0021]
Next, the removal effect | action of the resin 25 adhering to each single-plate conveyance belt 13 is demonstrated.
First, the conveyance action of the single plate 3 will be described. The drive shaft 5 is rotated by driving the electric motor to cause each single plate conveyance belt 13 to travel in the direction of the solid line arrow shown in FIG. At this time, the first rotating body 19 of each resin removing device 17 is pressed against the conveying surface of each single plate conveying belt 13 that travels on the removing belt 23 between the supporting rotating body 15 and the driving rotating body 9 to apply a predetermined tension. The belt travels in the direction of the solid arrow shown in FIG. Further, each removal belt 23 travels following the direction of the solid arrow shown in FIGS. 2 and 3 by the frictional force generated between each single plate conveying belt 13.
[0022]
When the single plate 3 is placed on each single plate conveyance belt 13 that travels as described above and conveyed in a predetermined direction, the resin 25 that has oozed out of the single plate 3 being conveyed is placed on the respective single plate conveyance belts 13. After adhering to the conveying surface of the veneer conveying belt 13, the sheet is transferred onto a removing belt 23 that is in contact with the conveying surface of the veneer conveying belt 13 and travels following it.
[0023]
The resin 25 transferred onto the removal belt 23 contains a large amount of moisture and oil and is not cured. However, as the time elapses, the resin 25 is cured by frictional heat with the veneer conveyor belt 13 or natural drying and gradually becomes thicker. Will increase.
[0024]
When the cured resin 25 becomes thick to some extent, the upper and lower layers (removed) of the cured resin 25 when the removal belt 23 is turned in the traveling direction by the second rotating body 21 as shown in FIG. The belt 23 is peeled off from the removal belt 23 due to a difference in elongation between the belt 23 and the belt 23 and being broken.
[0025]
When removing the resin 25 by turning the removal belt 23, it is not necessary to completely remove the resin 25. The removal belt 23 may have a removal effect that does not excessively increase the thickness of the removal belt 23 including the resin 25. Good.
[0026]
This prevents the resin 25 that has been transferred to the removal belt 23 from being hardened excessively, and the tension applied to the veneer conveying belt 13 by the removal belt 23 is kept within a fluctuation range that does not become excessive. Can do.
[0027]
In the present embodiment, the resin 25 of the single plate 3 can be removed from the single plate conveyance belt 13 by the removal belt 23 that applies tension to the single plate conveyance belt 13, and can also be removed to the removal belt 23. The cured resin 25 is applied to the veneer conveying belt 13 while preventing the thickness of the removing belt 23 from excessively increasing by turning off the traveling direction of the removing belt 23 to prevent the thickness of the removing belt 23 from excessively increasing. The tension variation can be stopped within a desired range.
[0028]
As a result, it is possible to prevent the single plate conveying belt 13 from being worn out and broken in a short time, and to stabilize the conveying speed within a desired range, thereby preventing the conveyance posture of the single plate 3 from being disturbed.
[0029]
The resin removing device 17 described above applies the tension by applying the removing belt 23 at a position corresponding to the upper outer peripheral surface of the first rotating body 19 to the conveying surface of the veneer conveying belt 13 and transferring the resin 25 attached thereto. When the resin 25 that is taken and adhered and hardened increases, it is peeled off by turning by the second rotating body 21. However, as shown in FIG. 1st and 2nd support rotating bodies 41 and 43 which can be driven and rotated, and are arranged below these 1st and 2nd support rotating bodies 41 and 43 arranged at predetermined intervals with respect to the conveyance direction to which pressure contact is made. Then, the resin removing device 40 is configured to be spread over the turning member 45 to be turned, and the contact area of the removing belt 23 with respect to the veneer conveying belt 13 is widened so that the resin 25 adhering to the veneer conveying belt 13 is efficiently removed. Removal It may be configured to be.
[0030]
The support member around which the removal belt 23 is stretched is preferably a rotating body because it is necessary to effectively follow the removal belt 23 in accordance with the travel of the single plate conveying belt 13 that is in pressure contact. For example, as shown in FIG. Instead of the second rotating body 21, a sliding member 51 such as a metal block or a polyamide resin block in which the sliding contact surface of the removal belt 23 is formed as a curved surface may be used.
[0031]
The single-plate transport device 1 in the above description has a plurality of endless shapes on the drive rotating body 9 of the driving shaft 5 that is rotationally driven by an electric motor and the driven rotating body 11 of the driven shaft 7 that is driven and rotated by the other. Although the single plate conveying belt 13 is stretched, the single plate conveying device of the present invention may be a type in which both rotating bodies (shafts) on which the single plate conveying belt is stretched are synchronously driven. Good. As a configuration for rotationally driving both rotating bodies (shafts) in synchronism, a configuration in which two electric motors controlled to be driven synchronously by the respective rotating bodies (shafts) are connected to each other or each rotating body (shaft) is chained Any structure may be used as long as it is connected by a timing belt or the like and is synchronously rotated by driving and connecting an electric motor to one rotating body (shaft).
[0032]
Further, one of the first rotating body 19 and the second rotating body 21 constituting the resin removing device 17, the first rotating body 41, the second rotating body 43 and the turning member constituting the resin removing device 40. A drive device such as an electric motor may be connected to any one of 45, the first rotating body 19 having the configuration shown in FIG. 5, and each removal belt 23 may run at the same speed as the single plate conveyance belt 13.
[0033]
【The invention's effect】
The present invention effectively removes the resin from the veneer attached to the conveyor belt and applies the tension to the conveyor belt with a fluctuation range that does not hinder the conveyance of the veneer so that the veneer is reliably and stably conveyed. can do. Further, it is possible to effectively prevent breakage of the conveyor belt due to excessive tension acting on each conveyor belt, and it is possible to stably transport a single plate over a long period of time.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a single plate conveying apparatus.
FIG. 2 is an enlarged front view showing a portion A in FIG. 1;
FIG. 3 is an explanatory view showing a peeled state of the resin attached to the removal belt.
FIG. 4 is an explanatory view showing a modified embodiment of the resin removing device.
FIG. 5 is an explanatory view showing a modified embodiment of the resin removing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1-single board conveying apparatus, 3-single board, 9-drive rotary body, 11-driven rotary body, 13-single board conveying belt, 17-resin removal apparatus, 19- 1st rotary body which comprises one supporting member 21-second rotating body constituting the other support member, 23-removal belt

Claims (3)

In a veneer veneer conveying device that conveys a veneer veneer by a plurality of traveling veneer veneer endless conveying belts that are stretched over a plurality of rotating bodies that are driven to rotate at least one part, the veneer veneer is not conveyed The veneer veneer endless transfer belt traveling on the veneer veneer veneer veneer conveying surface of the veneer veneer veneer veneer is provided in contact with a removal belt that is stretched between support members arranged at a predetermined interval. Along with this, the resin adhering to the veneer veneer endless conveyance belt is transferred to a removal belt that is pressed against the veneer veneer endless conveyance belt, and is transferred and cured when the traveling direction of the removal belt is turned by the support member. Resin removal device that can be removed. 2. The resin removing device according to claim 1, wherein the supporting member of the removing belt is a veneer single plate conveying device made of a rotating body. 2. The resin removing device according to claim 1, wherein at least one of the supporting members that support the removing belt is a sliding member.

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