JP4174810B2 - Curbing apparatus for straightening and drying curved materials and straightening and drying method - Google Patents

Description

  The present invention relates to a curving material straightening and drying apparatus and a straightening drying method for straightening and drying a curving material represented by a barrel material used as a side plate of a sake barrel as a building material.

  Oak wood (generic name of the beech family Nara genus) is a well-known material that is hard and elastic, so it is widely known as a tree species suitable for whiskey and brandy barrels. Was disposed of as industrial waste.

  On the other hand, oak is a high-use tree species, as can be seen from the fact that it has been used as a high-quality furniture material in Europe and the United States for a long time. Therefore, it was a valuable wood resource.

  For this reason, recently, a technique has been developed in which oak materials that have finished their role as barrels are flattened and reused as furniture and building materials.

JP-A-8-155912

JP 2000-233401 A

  However, when reusing oak materials in these utilization techniques, first, the curved oak materials are softened by means of steaming or the like and the oak materials are pressed and flattened, and then suitable for furniture and building materials. In combination with the need to dry to achieve moisture content and the need to set and remove oak wood from each processing unit, there is a lot of time between dismantling the sake barrels and reclaiming them for use in furniture and building materials. The problem was that it took time and effort.

  In order to solve such a problem, a technique for making a straight plate by applying a load so that the curved portion intermittently warps the opposite side of the oak (see Patent Document 2) has been developed. However, the labor of drying is indispensable. Eventually, the labor and time for separately drying the processed material, whether natural drying or artificial drying, remains unresolved. In addition, there is another concern that the scale of the apparatus must be increased in order to efficiently process a large amount of oak.

  The present invention has been made in consideration of the above-described circumstances, and is capable of reusing as a furniture or building material a large amount and efficiently flattened curved barrel material obtained by dismantling a sake barrel. An object of the present invention is to provide a straightening and drying apparatus for straightening materials and a straightening drying method.

  In order to achieve the above object, the straightening and drying method for a bending material according to the present invention includes, as described in claim 1, the bending material while softening the bending material by steaming the bending material in a predetermined drying apparatus. A method of straightening and drying a curved material by applying a load to the material to correct it to a flat shape, and subsequently drying the treated material that has been finished or is being finished so as to have a desired moisture content. A white oak material having a moisture content of 20 to 50% is used, and the inside of the drying apparatus is maintained at a dry bulb temperature of 90 ° C. to 110 ° C. and a wet bulb temperature of 90 ° C. to 100 ° C. Softening and straightening, and then increasing and maintaining only the dry bulb temperature to 110 ° C to 130 ° C, followed by straightening and drying, and then only the wet bulb temperature to 85 ° C to 100 ° C. Continued straightening and drying Was carried out, and then, performs a fixing and drying of flat plate shape was corrected by lowering maintained only wet-bulb temperature of 80 ° C~90 ° C.

  Further, the method for straightening and drying a curved material according to the present invention monitors the progress of straightening of the white oak material, and at the end of each step with the time when the progress of straightening of the white oak material does not substantially proceed. To do.

Further, according to the third aspect of the present invention, there is provided a straightening and drying apparatus for curving material according to the present invention, wherein a pair of central guide columns are erected on a predetermined base at opposing positions, and the pair of central guide columns are provided. A pair of side guide pillars are provided at both lateral positions separated from the central vertical construction surface formed by a predetermined separation distance so that the lateral vertical construction surface formed by them is parallel to the central vertical construction surface. A central slit that is erected on each base and through which the central reaction rod is inserted into the central guide column so that the horizontal movement of the central reaction rod is restrained and the vertical movement can be freely performed; An end slit through which the end loading rod is inserted into the side guide column is formed so that the horizontal movement of the end loading rod is restricted and the vertical movement is free. Under force rod The bending material is stacked in a plurality of stages so that the upper surface of the end is in contact with the end loading rod inserted into the end slit and the upper surface of the end is in contact with the lower side. A curving material straightening drying pallet apparatus comprising loading means for loading a straightening load on two end loading rods that are in contact with the upper surface of the end of the curving material arranged at the uppermost stage at The material is white oak with a moisture content of 20 to 50% .

  Moreover, the correction | amendment drying method of the bending material which concerns on this invention comprises the above-mentioned loading means by the loading body with predetermined mass.

  Further, in the straightening and drying method for a bending material according to the present invention, a reaction force body fixed to at least one of the center guide pillar and the side guide pillar and an upper end are connected to a lower surface of the reaction force body. The above-described loading means is constituted by the suspended hydraulic or pneumatic actuator, and the tip of the telescopic rod of the hydraulic or pneumatic actuator is configured so as to be able to contact the two end loading rods.

  In straightening and drying a curved material using the straightening and drying pile device for curved material according to claim 3, first, a central reaction force is applied to two central slits respectively formed on a pair of opposed central guide columns. Insert the rod.

  Next, the curved material disassembled from the barrel material is placed so that the lower surface thereof is in contact with the central reaction rod and the curved convex portion is positioned downward. The bending material may be arranged so as to be appropriately arranged in the bending material mounting space formed between the pair of central guide columns.

  Next, the end loading rods are inserted into two end slits respectively formed on the pair of side guide columns arranged opposite to each other, and are put on and contacted with the upper surface of the end of the bending material.

  In this way, the bending material is stacked in a plurality of stages by repeatedly stacking the central reaction force rod, the bending material, and the two end loading rods from below.

  Here, since the central reaction force rod and the end loading rod are inserted through the central slit and the end slit, respectively, there is no possibility of shifting in the horizontal direction. In addition, for the lowermost bending material, since the central lower surface is only supported by the lowermost central reaction force rod placed on the base, if necessary, a position that does not interfere with the correction process, for example, An auxiliary reaction force member may be disposed adjacent to both sides of the central reaction force rod so as to support the lowermost bending material together with the central reaction force rod.

  Once the curved material is stacked in multiple stages, the correction load is then loaded on the two end loading rods that are in contact with the upper surface of the end of the curved material arranged in the uppermost stage, and the straightening drying stack. The entire apparatus is carried into the drying apparatus. Regarding the timing of the start of loading and the loading into the drying apparatus, loading may be performed after loading is started, or loading may be started after loading.

  Next, the bending material is softened by steaming the bending material in a drying apparatus, and the bending material is corrected to a flat shape by the above-described loading load. Dry to desired moisture content.

  In this case, the curving material is corrected into a flat plate shape by simply setting the dismantled curving material in the straightening drying pallet apparatus according to the present invention and carrying it into the drying apparatus, and reusing it as furniture or building material. In addition, since it can be set in a plurality of stages for the straightening drying pallet apparatus, it is possible to straighten and dry a large number of curved materials at a time.

  The loading means for loading the correction load may be of any configuration as long as the vertical load can be loaded downward at both ends with the vicinity of the center of the bending material as a fulcrum. For example, it can be configured by a loaded body having a predetermined mass. In addition, the reaction force body is fixed to at least one of the center guide column and the side guide column, and a hydraulic or pneumatic actuator that is vertically coupled to the lower surface of the reaction force body, It is also possible to configure the tip of the telescopic rod of the hydraulic or pneumatic actuator so that it can contact the two end loading rods.

  What is necessary is just to select a drying apparatus suitably from what is marketed.

  Here, if the base described above is constituted by a substrate and a traveling wheel is attached to the lower surface of the substrate, it is carried into the straightening drying pallet apparatus and unloaded from the apparatus after completion of the steaming / drying process. It becomes easy, and it becomes possible to further shorten the labor and time required for the straightening drying process and to improve the efficiency.

  On the other hand, the steaming or drying schedule can be performed by appropriately changing the known schedule or depending on the tree species, but as far as white oak wood is concerned, residual stress due to being used for several years as a barrel side plate Not only is it difficult to relax and straighten, it takes 4-10 days to dry, and the schedule for straightening and drying white oak used as a barrel has not yet been clarified. Currently.

  The present applicant has focused on whether white oak used in sake barrels can be straightened and dried to be used as furniture or building materials, and as a result of many experiments, such white oak has been straightened and dried. Found a new schedule that can be.

  That is, in the straightening drying method according to claim 1, the white oak material is softened and maintained by maintaining the inside of the drying apparatus at a dry bulb temperature of 90 ° C to 110 ° C and a wet bulb temperature of 90 ° C to 100 ° C. Correction is performed, and then only the dry bulb temperature is maintained at 110 ° C. to 130 ° C. to continue correction and drying, and then only the wet bulb temperature is maintained at 85 ° C. to 100 ° C. Subsequently, correction and drying are performed, and then the flat plate shape is fixed and dried by maintaining only the wet bulb temperature at a temperature of 80 ° C. to 90 ° C.

  In this way, the residual stress of the white oak due to being fixed in a curved state as a barrel side plate for a long time will be relieved in a short time, thus correcting and drying the white oak in a short time Can be achieved.

  The time for maintaining each temperature range in each step may be arbitrarily determined, but while the progress of correction of the white oak material is monitored, the progress of correction of the white oak material does not substantially proceed. If the timing is the end of each step, white oak can be straightened and dried in a short time.

  Although the target value of the moisture content is also arbitrary, it is desirable that the desired moisture content is 8% when white oak is used for flooring, and 12% when it is used for furniture.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a straightening and drying apparatus for curving material and a straightening drying method according to the present invention will be described with reference to the accompanying drawings. Note that components that are substantially the same as those of the prior art are assigned the same reference numerals, and descriptions thereof are omitted.

  FIG. 1 is a front view showing a straightening and drying apparatus for curving material according to the present embodiment, FIG. 2 is a side view, and FIG. 3 is a horizontal sectional view taken along line AA in FIG. As can be seen from these drawings, the curving material straightening and drying apparatus 1 according to the present embodiment is a pair of central guide columns 3 and 3 erected on a rectangular substrate 2 serving as a base at an opposing position. And a pair of side guide columns 5 and 5 erected on the substrate 2 so as to face each other.

  Here, as can be seen well in FIGS. 1 and 3, the pair of side guide columns 5, 5 is formed by a pair of central guide columns 3, 3. The central guide pillar 3 is provided so as to be parallel to the virtual central vertical composition plane 4 at both lateral positions separated from the central vertical composition plane by a predetermined distance L, L. Two side guide pillars and a total of four side guide pillars are erected on the substrate 2 respectively.

  The central guide column 3 is an assembly column in which two angle members are separated by a gap d, and a space between the angle members extending in the vertical direction forms a central slit 8 through which the central reaction force rod 7 is inserted. The center reaction force rod is restrained from moving in the horizontal direction so that it can move in the vertical direction.

  Similarly, the side guide column 5 is also an assembly column in which two angle members are separated by a gap d ′, and the space between the angle members extending in the vertical direction is an end portion through which the end loading rod 9 is inserted. A slit 10 is formed so that the horizontal movement of the end loading rod is restricted and the vertical movement is free.

  Here, as specific examples of each member and the gap, the gaps d and d 'are 27 mm, the central reaction rod 7 is a 25 mm × 25 mm × 1000 mm steel square pipe, and the end loading rod 9 is a 25 mmφ steel round pipe. It can be.

  In order to stabilize the four side guide pillars 5 and the two central guide pillars 3, the heads of those pillars are flattened in a direction perpendicular to the central vertical construction surface 4 and the side vertical construction surface 6. The tops of the pair of side guide columns 5 and 5 facing each other can be detachably connected via a connecting rod 13.

  The curving material straightening and drying pile 1 according to the present embodiment further includes a loading body 11 made of concrete as a loading means, and the loading body 11 is a bending material 12 stacked on the uppermost stage. The corrective load is loaded on the two end loading rods 9, 9 that are in contact with the upper surface of each of the ends. That is, in the straightening and drying pile device 1 according to the present invention, the bending material 12 is brought into contact with the central reaction rod 7 whose lower surface near the center is inserted into the central slit 8 and the upper surface of the end portion is A portion that abuts the central reaction force rod 7 by being stacked in a plurality of stages so as to be in contact with the end loading rod 9 inserted through the end slit 10 and with the curved convex portion downward. The bending material 12 can be bent by using the fulcrum as a fulcrum, and the correction load from the loading body 11 can be corrected through the central reaction force rod 7 and the two end loading rods 9. The plurality of bending materials 12 are loaded simultaneously so that the bending materials 12 are sequentially transmitted from 12 to the lower bending material 12.

  The bending material 12 mainly targets a side plate (body) obtained by dismantling a sake barrel.

  In the straightening and drying of the bending material 12 using the straightening and drying pile device 1 according to the present embodiment, first, the two centers formed respectively on the pair of central guide columns 3 and 3 disposed opposite to each other. The central reaction force rod 7 is inserted into the slits 8 and 8.

  Next, the bending material 12 disassembled from the barrel material is placed so that the lower surface in the vicinity of the center is in contact with the central reaction force rod 7 and the curved convex portion is on the lower side. The bending members 12 usually vary in width, but as shown in FIG. 2, the bending members 12 may be appropriately arranged in a bending material mounting space formed between the pair of central guide columns 3 and 3. That is, the bending material 12 can be arranged in an arbitrary number in a plurality of stages and in the horizontal direction, and all the bending materials 12 can be loaded and flattened simultaneously.

  Here, there is a concern that the lowermost bending material 12 is unstable because the lower surface near the center is supported only by the central reaction force rod 7, but in such a case, there is no problem in the correction process, that is, flattening. An auxiliary reaction force member may be separately installed at a position, for example, both sides of the central reaction force rod 7 as necessary.

  Next, the end loading rod 9 is inserted into the two end slits 10, 10 formed in the pair of side guide columns 5, 5 arranged opposite to each other and placed on the upper surface of the end of the bending material 12. Make contact.

  In this manner, the bending material 12 is stacked in multiple stages by repeatedly stacking the central reaction force rod 7, the bending material 12 and the two end loading rods 9 and 9 from below.

  Here, since the central reaction rod 7 and the end loading rods 9 and 9 are inserted through the central slit 8 and the end slit 10, respectively, there is no possibility of shifting in the horizontal direction.

  If the bending material 12 is stacked in a plurality of stages, next, in order to load the correction load on the two end loading rods 9 and 9 that come into contact with the upper surface of the end of the bending material 12 arranged at the uppermost stage, The loading body 11 is placed on the end loading rod, and the entire straightening drying pallet apparatus 1 is carried into the drying apparatus.

  What is necessary is just to select a drying apparatus suitably from what is marketed as a wood dryer, and what is necessary is just to change a well-known schedule or the schedule of steaming or drying suitably. In addition, regarding the start of loading, in other words, the timing of installing the loading body 11 and carrying it into the drying device, the loading body 11 may be installed and then loaded into the drying device, or loaded after loading. The body 11 may be placed.

  Next, the bending material 12 is softened by steaming the bending material 12 in the drying apparatus, and the bending material 12 is corrected into a flat plate shape by the above-described loading load. Subsequently, the correction is finished or is being finished. The material is dried to the desired moisture content suitable for the application.

  As described above, according to the curving material straightening and drying pile 1 according to the present embodiment, the disassembled curving material 12 is set in a plurality of stages and in an arbitrary number in the horizontal direction and is carried into the drying device. The bending material 12 can be simultaneously corrected into a flat plate shape simply by doing so.

  Therefore, not only can a large number of bending materials 12 be straightened and dried at the same time, but once the bending material 12 is set on the straightening and drying beam stacking device 1 according to the present embodiment, the drying device is thereafter used. Therefore, it is only necessary to take out the processing material by unloading it, so that the labor for flattening the bending material 12 can be greatly reduced.

  In addition, according to the curving material straightening and drying stacking device 1 according to the present embodiment, it is continuously performed without any manual or extra steps between the straightening step and the drying step. Therefore, the time for flattening the bending material 12 can be greatly shortened.

  Further, according to the straightening and drying stacking apparatus 1 for a curved material according to the present embodiment, the loading body 11 is used as a loading means for loading the curved material 12 to correct and flatten it. The energy required for this is zero except when the load 11 is raised and lowered, and the energy consumption required for pressurization for correction is drastically reduced as compared with a conventional pressing device or the like.

  In the present embodiment, the loading body is used as the loading means, but it may be configured as shown in FIG. 4 instead.

  That is, the curving material straightening and drying apparatus 21 according to the modification shown in FIG. 1 is a pair of standing and standing on the rectangular substrate 2 that is the base, like the straightening and drying apparatus 1. The central guide columns 3 and 3 and a pair of side guide columns 5 and 5 erected on the substrate 2 so as to face each other are provided, but instead of the loaded body 11, a pair of side guide columns 5 and 5 is provided. The two reaction force bodies 22, 22 spanned and fixed to the stigma of the head, and a pneumatic actuator 23 with the upper end connected to the lower surface of the reaction force body and suspended, and the telescopic rod of the pneumatic actuator 23 The tip is configured to be able to abut on the two end loading rods 9 and 9.

  Even in such a configuration, it is possible not only to vertically load the two end loading rods 9 and 9 by operating the pneumatic actuator 23, but also to perform a softening and correction process in the dryer chamber. While the drying bulb 12 and the wet bulb temperature in the dryer are being monitored, the loading of the bending material 12 can be controlled by force or displacement, and the bending material 12 can be straightened and dried more appropriately and efficiently. It becomes possible.

  Further, in this embodiment, the steaming or drying schedule can be performed by appropriately changing a known schedule or a suitable schedule according to the tree species, but it is impossible to correct and dry white oak wood according to a known schedule. Therefore, corrective drying is performed according to the schedule shown below.

  That is, first, the white oak material is softened and corrected by maintaining the inside of the drying apparatus at a dry bulb temperature of 90 ° C to 110 ° C and a wet bulb temperature of 90 ° C to 100 ° C.

  Here, the reason why the temperature range is limited as described above is that if it is less than 90 ° C, the residual stress cannot be relieved as far as white oak is concerned. This is because the capacity is excessive and the efficiency decreases.

  Table 1 shows the drying schedule for the inch oak (25.4mm) white oak that was dried until the final moisture content reached 8%. Yes (“All about drying wood” written by Makoto Terasawa, Kaiseisha, published on October 1, 1994).

  As can be seen from the table, the white oak material is dried at a dry bulb temperature in the range of 40 ° C. to 80 ° C., but such a schedule requires 17 to 26 days for drying.

  When softening and straightening white oak wood, the progress of white oak wood straightening is monitored, and the above-mentioned softening and straightening process ends at the time when the progress of white oak wood straightening does not substantially progress. It is desirable to do.

  It should be noted that the moisture content of the white oak material can be estimated by placing the sample material in the dryer chamber as necessary and monitoring the moisture content of the sample material with a moisture meter.

  Next, only the dry bulb temperature is maintained at 110 ° C. to 130 ° C. to continue correction and drying. About the time which performs this process, it may carry out similarly to the above-mentioned, monitoring the progress status of the correction of white oak material similarly to the above-mentioned.

  Here, as described above, the reason why the temperature range is limited as described above is that if it is less than 90 ° C, the residual stress cannot be relaxed as far as white oak is concerned, and if it exceeds 110 ° C, This is because the steam supply capacity becomes excessive and the efficiency decreases. Further, the reason why the dry bulb temperature is suppressed from 90 ° C. to 110 ° C. to 110 ° C. to 130 ° C. is because a problem such as discoloration of the white oak material occurs.

  Next, only the wet bulb temperature is maintained at 85 ° C. to 100 ° C., followed by correction and drying. Since the temperature range is the same as described above, the description thereof is omitted.

  Next, only the wet bulb temperature is lowered and maintained at 80 ° C. to 90 ° C., and the fixed flat plate shape is fixed and dried.

  In this way, the residual stress of the white oak due to being fixed in a curved state as a barrel side plate for a long time will be relieved in a short time, thus correcting and drying the white oak in a short time Can be achieved.

  The target moisture content is preferably 8% when white oak is used for flooring and 12% when used for furniture.

  A verification test was conducted to confirm the operational effects of the curving material straightening and drying apparatus and the straightening drying method according to the present embodiment, and the outline and results thereof will be described below.

  The side plate used for the test has a thickness of 19mm to 40mm (average thickness of 23mm), a length of 825mm to 870mm (average length of 840mm), a center height of the curved recess from 22mm to 44mm, and a moisture content before correction. 20-47% white oak was used as a specimen. Incidentally, as described above, it is desirable to set it to approximately 12% or less for use as furniture, and approximately 8% or less for use for building materials, particularly flooring, so the moisture content was set as a target value.

  As a demonstration experiment, first, the above-described specimen was loaded on the straightening drying pile 1 in the same manner as the bending material 12. When laying the specimens, the average number was 12 in the width direction per stage, the number of stages was 13, and the number was 156.

  For the loaded body, the mass was set to 2 tons so that the load was loaded with a mass of 100 kg or more per stage.

  Next, the straightening drying stacking apparatus 1 on which the specimens were stacked was carried into a wood dryer (SK-IF10LHP manufactured by Shinshiba Equipment). This wood dryer is equipped with a steam internal fan, is equipped with a function to control the temperature and humidity in the dryer and steaming equipment, and is a high-temperature dryer that can heat the dryer to 130 ° C. .

  After the above-described straightening drying pallet apparatus 1 was carried into such a wood dryer, straightening drying was performed according to the schedule shown in Table 2.

  The procedure of softening / correcting / drying the specimen is as follows, as shown in the table.

  (a) The raw steam piped from the boiler was steamed into the dryer, and the inside of the dryer was maintained at 98 ° C. for 2 hours both at the dry bulb temperature and the wet bulb temperature, thereby softening and correcting the specimen. Here, the central arrow height of the curved recess before the softening and correction of the specimen was about 37 mm, and since the progress of the correction stopped when 15 mm was lowered, the above-described cooking was completed in 2 hours.

  (b) Next, the dry-bulb temperature was raised to 120 ° C. and maintained to dry the specimen while continuing correction. The central arrow height of the curved recess was further lowered by 17 mm, and the effect of raising the dry bulb temperature to 120 ° C. appeared. Moreover, the moisture content fell to 15.9%. In addition, since the progress of correction stopped at this time, the above-mentioned temperature maintenance was completed in 2 hours.

  (c) Next, the wet bulb temperature was lowered to 94 ° C. and maintained for 2 hours to continue correction and drying. The central arrow height of the curved recess was further lowered by 7 mm, and the water content was reduced to 10.9%.

  (d) Next, the wet bulb temperature was lowered to 90 ° C. and maintained for 2 hours to immobilize the straightened flat plate shape, and when it was subsequently dried, the water content became 8%.

  Next, after completion of drying, the specimens were cooled, and then transported out of the wood dryer while being stacked, and then the stacked specimens were removed one by one.

  When the flattening situation and the water content of the specimens performed in the above-described procedure were examined, all 156 were flattened and the water content was 7 to 12%.

  Further, when the specimen finished with the straightening and drying treatment was planar finished and the surface of the specimen was observed, the fabric color of white oak was retained. Moreover, when the length direction was cut | disconnected and it observed from the end face, there was no internal crack.

  Based on the verification test described above, the efficiency (productivity) when using the curving material straightening and drying pile device 1 according to the present embodiment will be examined with a barrel having a capacity of 180 liters as an example.

  First, since the barrel having the above-mentioned capacity has a diameter of 55 cm, 25 side plates are required with a side plate width of 7 cm. However, according to the conventional method (Japanese Patent No. 3268682), one barrel is processed. Takes about 15-20 minutes (excluding drying time), so 1.6 sheets are processed per minute.

On the other hand, the conditions of the straightening drying pallet apparatus and the specimen are
-Number of stages 30 (The mass of the loaded body is 3 tons)
・ Number of specimens arranged in the width direction in one row 10 sheets (7 cm wide)
・ Number of sheets: 300 (30 x 10)
・ Number of straightening and drying stacking devices according to this embodiment: 4 ・ Total number: 1200 (4 x 300)
・ Correction processing time in wood dryer 6 hours
(Excluding time required for drying for 2 hours only)
When the productivity is calculated based on the above-described verification test, the number of sheets per hour is 200 sheets (1200 sheets ÷ 6 hours) and the number of sheets is 3.3 sheets per minute, which is 2 times more productive than the conventional method. You can see that it doubles.

  In addition, according to the present embodiment, since flattening and drying are performed simultaneously, the difference in productivity is further widened, and if a normal wood dryer is used instead of the small wood dryer described above, the productivity is increased. Can be seen to jump 10 times compared to the conventional method.

  That is, a normal wood dryer can accommodate 20 straightening drying pallets with the above-mentioned specifications, and can process 20 units × 300 sheets = 6000 sheets per time, 16 sheets per minute. .

The front view of the stacking apparatus for correction | amendment drying of the bending material which concerns on this embodiment. The side view of the stacking apparatus for correction | amendment drying of the bending material which concerns on this embodiment. The horizontal sectional view which follows the AA line of the pile device for correction | amendment drying of the bending material which concerns on this embodiment. The front view of the stacking apparatus for correction | amendment drying of the bending material which concerns on a modification. The side view of the pile apparatus for correction | amendment drying of the bending material which concerns on a modification.

Explanation of symbols

1,21 Stacking device for straightening and drying curved materials 2 Substrate (base)
3 central guide column 4 central vertical surface 5 side guide column 6 side vertical surface 7 central reaction force rod 8 central slit 9 end loading rod 10 end slit 11 loading body (loading means)
12 Bending material 22 Reaction force body 23 Pneumatic actuator

Claims (5)

A treatment material in which the bending material is softened by steaming in a predetermined drying apparatus, the loading material is applied to the bending material so as to be flattened by applying a load, and the correction is subsequently finished or is being finished. The curving material is dried to a desired moisture content, and the curving material is a white oak material having a moisture content of 20 to 50%, and the inside of the drying apparatus has a dry bulb temperature of 90 ° C to 90 ° C. By maintaining 110 ° C and wet bulb temperature 90 ° C-100 ° C, the white oak is softened and corrected, and then only the dry bulb temperature is raised to 110 ° C-130 ° C. Then, correction and drying are performed, then only the wet bulb temperature is maintained at 85 ° C to 100 ° C, and then correction and drying are performed. Then, only the wet bulb temperature is decreased to 80 ° C to 90 ° C. Maintained and straightened flat plate shape Joka and straightening drying method of the bending member, characterized in that the drying. 2. The method for straightening and drying a curved material according to claim 1, wherein the progress of the correction of the white oak material is monitored and the time when the progress of the correction of the white oak material does not substantially progress is set as the end of each step. A pair of side guides are erected on a predetermined base at opposite positions on a pair of side guides at opposite side positions separated from a central vertical surface formed by the pair of central guide columns by a predetermined distance. Columns are erected on the base so that the lateral vertical plane formed by them is parallel to the central vertical plane, and a central slit through which a central reaction rod is inserted is inserted into the central guide column. The reaction rod is formed so that the horizontal movement of the reaction rod is restricted and the vertical movement can be freely performed, and an end slit through which the end loading rod is inserted into the side guide column is formed in the horizontal movement of the end loading rod. Is formed so as to be freely movable in the vertical direction, and a lower surface is brought into contact with the central reaction force rod inserted through the central slit, and an end upper surface is disposed at the end loading rod inserted through the end slit. But it The two end portions that come into contact with the upper surface of the end portion of the bending material arranged at the uppermost stage in a state where the bending material is stacked in a plurality of stages so that the curved convex portion is positioned downward A curving apparatus for straightening and drying a curving material provided with loading means for loading a loading load onto a loading rod, wherein the curving material is a white oak material having a moisture content of 20 to 50%. Straightening and drying equipment. 4. The curving apparatus for straightening and drying a curved material according to claim 3, wherein said loading means comprises a loading body having a predetermined mass. The loading means described above includes: a reaction force body fixed to at least one of the center guide pillar and the side guide pillar; and a hydraulic or pneumatic actuator vertically connected to the lower surface of the reaction force body. 4. The curving material straightening and drying stacking device according to claim 3, wherein the curving material is straightened and dried by being configured such that the distal ends of the telescopic rods of the hydraulic or pneumatic actuator can be brought into contact with the two end loading rods.

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