JPS59208381A - Drier for veneer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The device of the present invention can completely reduce #4 reduction and thickness unevenness of a veneer veneer after drying, completely reduce the /31T A required during drying, and eliminate drying unevenness. This relates to a veneer dryer.

Conventionally, when completely drying a veneer veneer, "-I'
A conveyance path for holding and conveying the veneer veneer to be dried is formed by installing a plurality of pairs of rolls in the conveyance direction or by suspending a pair of endless wire meshes above and below. The material was circulated and the veneer veneer was indirectly heated and dried using an air medium while it was being transported.

However, when the conveyance path is formed by rolls, the veneer veneer being held and conveyed tends to be compressed due to the pressure due to the weight of the rolls, and due to the deflection in the longitudinal direction of the rolls, the veneer veneer is compressed in the direction perpendicular to the conveyance direction. Since the compression ratio tends to vary, the veneer veneer after drying is likely to become thinner and uneven in thickness. At the same time, since the veneer veneer is conveyed while being transferred between rolls, the fiber direction must be parallel to the conveying direction.
In addition, the length of the veneer veneer has been subject to various restrictions, such as the length required to be at least twice the distance between adjacent rolls.

Unfortunately, during the VC process of transferring the veneer veneer between the rolls, the resin contained in the veneer veneer grains leaks onto the roll, or due to deterioration in the properties of the veneer veneer in recent years. Tears, chips, etc. occur, and the veneer veneer is stuck between the rolls.
Because of this, the operating rate of the veneer veneer dryer, the line VC
This resulted in a low filling rate.

In addition, when the conveyance path r is an endless wire mesh and the hot air supplied to the veneer veneer during conveyance is circulated in a direction perpendicular to the conveyance direction, it is necessary to prevent uneven drying. Therefore, it is necessary to interpose a wind guide duct K, which not only causes major damage to the equipment but also increases the equipment cost. , resulting in an increase in the required power.

In view of steaming, it is also an object of the present invention to provide a device that eliminates the drawbacks of the conventional devices described above.
A blower for circulating hot air is placed on the other side of the reeds to form a ventilation passage, and the suction duct and blowing duct arranged at both longitudinal ends of this ventilation passage are connected directly to each other.
V/J1. The heating section is connected to the heating section, and the heating section is provided with multiple conveyor paths consisting of a row of endless conveyor belts for sandwiching and conveying the veneer plates, and the top of each conveyor path is 1τ. Longitudinal direction V-arbitrary interval 1
The structure is characterized in that it is equipped with heat dissipation tubes arranged in mantissa numbers, and is also used as the heat dissipation tubes within the space between vertically adjacent conveyance paths.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

First, the configuration of the first embodiment will be explained.

A required number of air seal sections 2 and 2' are installed on both sides of the heating section 1 in the longitudinal direction, and one air seal section 2 has a high IM inlet 3, and the other air seal section 2' A 1Cid open section 4 and a cooling section 5 are arranged in series to provide an outlet 6.

From the loading inlet 3 to the unloading outlet 6, inside the heating section 1 leading to the VC, there is an endless conveyor belt 7 consisting of wire mesh, wire mesh, etc.
112F' pair e are arranged in multiple stages, and the conveyance path 9 for sandwiching and conveying the veneer veneer 8 is arranged in multiple stages. It is configured in a folded shape, and is connected from the veneer veneer supply section 10 to the veneer veneer outlet 11-!
, the plywood veneer 8 is being conveyed in the direction of arrow A.

The "section V" of each stage of the endless conveyance belt 7, the longitudinal direction,
A plurality of heat dissipation pipes 13 which serve as a total heat source such as steam or hot water are arranged at arbitrary intervals in the longitudinal direction above and below the conveyance path 9 of each stage. are disposed to serve as the transport path 9 which also serves as the heat dissipation tube 13 .

Carrying in the heating section 1 D 3111! A pair of hot air chain blowers 1 are installed on the support stand 14-1 at the upper part near I.
5, and on the other side, steam, temperature 7J (Nabon heat source/)
(Each heat generator 16 is installed)
It is formed by the drive of the prime mover (Fig.
Activate 15 blowers for circulation of Jl Medal of Honor, hot air't:
The air is circulated in the direction of arrow B in the JIJi air path 17.

- Suction ducts 19 are opened on both sides of the heating section 1 located directly in front of the pair of hot air circulation blowers 15, and the suction ducts 19 are all disposed in these openings to communicate with the ventilation passages 17, Similarly, a blowing duct 21 is arranged in the blowing port 20 opened on both sides of the heating section 1 on the side of the carrying out port 6, and is in communication with the ventilation passage 17.
At the top of the ventilation passage 17, which circulates the hot air generated in the ventilation passage 17 to the heating section 1, there is an exhaust pipe 28 equipped with a damper 22 for discharging humid air. The installation has been delayed.

Next, in the second embodiment shown in FIG. 4, whereas the conveyance path 9 of the first embodiment had a multi-stage turn-back configuration, the conveyance path 9 is of a direct type for each stage. ”Two-stage conveyance path 9
is a continuous plywood veneer 8, and the conveyance path 9 of the 1' stage is
The method of cutting to size, cutting to size, or cutting to size and cutting 8 pieces of veneer veneer and drying them is shown.

Also, Figure 5~! @6 Figure 1 In the third embodiment shown in Fig. 1, due to the difference in material thickness and thickness of the veneer veneer 8 to be dried, the number of heating sections is completely increased by one in order to increase the number of sheets to be dried. When processing the humid air due to the increased volume, or when the increased number exceeds the permissible output limit of the hot air circulation blower 15, double the number of dryers to be installed based on one unit of the dryer used. This is a so-called Danal Air Surgulation Dryer, which is a single veneer veneer dryer shown in the first embodiment by replacing the second veneer veneer dryer at its starting end. A pair of upper and lower endless conveyor belts 7 are arranged in six stages on the awns, and two conveyor paths 9 of a three-stage folded (~ configuration) are formed in the upper and lower sides.

Although the second embodiment and the third embodiment are different from the first embodiment in terms of implementation, the individual parts are the same, so the same reference numerals will be used in all parts of the description. Shijaku (abbreviated).

Next, the entire operation will be explained.

'fIJl to 2 in the third embodiment, heating section 1
In the upper ventilation passage 17, the air circulated through the single-person duct 19 is sent in the direction of arrow B by the hot air circulation blower 15, and is turned into hot air 7 through the heating device 16i, which is then blown into the heating section from the duct 21. It is circulating within 1.

In this state, in the first embodiment, the veneer veneer 8 is conveyed in its fiber direction from the veneer veneer supply unit 10, and is sent in the direction indicated by the solid line or the dashed-double line, which is orthogonal to the U direction.
Hot air is carried from the inlet 3 through the air seal section 2 to the lower conveyance path 9 in the heating section 1, and circulates in the heating section 1, as well as radiant heat from the heat dissipation pipes 13 located above and below the conveyance path 9. The air seal section 2 is transferred from the lower stage to the middle stage and the upper stage conveyance path 9 while being dried.
．． 2', the air seal section/, opening section 4, cooling section 5,
Carrying out) j 5 (i) Pass through and remove the plywood veneer unloading section 11v
It's here.

Next, direct transportation format? In the second embodiment shown, the continuous veneer veneer 8 unwound from the winding bobbin to the upper conveyance path 9 is conveyed in the direction of arrow A with the fiber direction perpendicular to the conveyance direction. In the conveyance path 9 of the stage, the reeds to a certain size or the veneer veneer 8 after being cut to a certain size are conveyed in the entire direction of the fiber direction (in the direction toward the sky without being turned into the final direction), and the reeds are conveyed to the heating section 1, respectively. In the third embodiment, the dryer is dried by the hot air circulating therein and the air taken out after being dried by the radiant heat of the heat dissipation tube 13, compared to the first and second embodiments. The hot air circulates into the heating section 1 through the central connection area.
Although there is a difference that the directions are opposite to each other, the veneer veneers 8 carried into the second and lower transport paths 9 are taken out from the veneer veneer supply section 10 as in the case of the first embodiment. It reaches section 11 and is dried.

In addition, in the conveyance path 9 having a three-stage folding configuration shown in the first and third embodiments, the veneer veneer 8 after being cut to size or cut to size as shown in the figure is not transferred to the upper stage of the second center case. It goes without saying that the continuous veneer veneer 8 may be conveyed to the conveyance path 9.

As described above, according to the uninvented device, a required number of longitudinal blades on the upper part of the heating section are installed, and 8! A suction duct and a blow duct arranged at both ends in the longitudinal direction of this ventilation passage communicate with each heating section V located in the straight direction 10, and the heating section has a plywood veneer plate. Conveyance paths consisting of a pair of endless conveyance belts are arranged in multiple stages, and the top and bottom of each conveyance path is equipped with a plurality of heat dissipation tubes arranged at arbitrary intervals in the longitudinal direction. Since it is configured to double as a heat dissipation tube between adjacent conveyor paths, the veneer veneer can be transported to a pair of upper and lower endless conveyor belts without having to consider its length to the extent possible, thereby preventing clogging or clogging during conveyance. Meandering is also prevented, and the metal can be taken out smoothly while reducing thickness reduction and thickness unevenness.If the conveyance path is completely straight conveyance type, the fiber force can be fixed at one point in the metal conveyance direction.
, which can be imported.

In addition, heat lice can be removed in the direction V perpendicular to the conveyance direction (the wind guide duct used when feeding the cows), which can eliminate drying lice while reducing the total power required.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a first projecting embodiment of the present invention, FIG. 2 is a side view of the same, FIG. Figure V is a 1111j side view showing the second embodiment of the present invention, Figure 5 is a plan view of the third embodiment of the present invention near F and F, and Figure 6 is a 1111-plane view of the same.1... heating section, 7... endless conveyor belt, 8...
...Plywood veneer, 9...Transport path, 13...Radiation pipe, 15...Blower for hot air circulation, 16...Heating machine, 17...Ventilation path, 19...Suction duct, 21...Blow duct. Patent applicant: Taihei Seisakusho Co., Ltd.

Claims (1)

[Claims] A blower for circulating hot air is placed on the longitudinal side of the upper part of the heating section, which is cast a required number of distances, and a heating section is placed on the other side to form a ventilation path, and a blower is placed at both longitudinal ends of this ventilation path. Directly connect the installed suction duct and blow duct.
The heating sections are connected to the respective heating sections located in the heating section, and the heating sections are provided with multi-stage transport paths consisting of a pair of endless transport belts that sandwich and transport the veneer veneer. The veneer veneer dryer is equipped with a plurality of heat dissipation pipes arranged at arbitrary intervals, and is characterized in that the heat dissipation pipes within the interval between vertically adjacent conveying paths also serve as the heat dissipation pipes.