JP2011121235A - Veneer drying method and veneer drying apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve practicability of a veneer drying method using a hot plate type drying apparatus to achieve efficient drying treatment attaining energy saving. <P>SOLUTION: The drying apparatus is constituted to bore the suitable number of storage grooves 3a in the upper heating surface of each of hot plates 3 provided in multiple stages, to store veneer transfer members 1 of substantially long saw shape with suitable length with a large number of piercing bodies 1a projected in parallel on the upper side, into the storage grooves 3a and to reciprocate the veneer transfer members 1 with veneers (a) placed thereon, in the lateral direction of the hot plates 3 to alternately transfer the veneers (a) to the inside and outside of the spaces of the hot plates 3. Using such a drying apparatus, in any stage of multiple stages, operation of drying the veneer (a) carried in from a carry-in port on the left front side of the drying apparatus, by hot pressing of the hot plate 3 and carrying out the veneer (a) to a carry-out port on the left rear side of the drying apparatus, and operation of drying the veneer (a) carried in from a carry-in port on the right front side of the drying apparatus, by hot pressing of the hot plate 3 and carrying out the veneer (a) to a carry-out port on the right rear side of the drying apparatus, are alternately performed to dry the veneers (a) with almost no break. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a veneer veneer drying method and a veneer veneer drying apparatus, and more specifically, a drying method for drying a veneer veneer using a multistage hot plate type drying apparatus, and a method for the drying method. The present invention relates to a drying device for a multi-stage hot plate type veneer single plate that can be used in practice.

  Conventionally, as disclosed in, for example, Patent Literature 1 to Patent Literature 3 and the like, as a drying device used for drying a veneer veneer (hereinafter simply referred to as a veneer), an appropriate heat source such as heating steam, heating oil, or an electric heater A so-called hot plate type drying apparatus is known in which a single plate is sandwiched between hot plates heated to an appropriate temperature by a heating plate, and a drying method using the hot plate type drying device uses hot air to the single plate. Although the thermal efficiency is theoretically better than the drying method using a so-called hot-air circulation type drying device that sprays and dries, there are various types of efficiency, processing capacity, occupied volume, etc. of the drying device. Because it has weaknesses and difficulties, it has not been widely used in reality.

Japanese Patent Publication No.62-32390 Japanese Examined Patent Publication No. 62-2678 Japanese Patent Publication No. 2-33291

  That is, as in the invention disclosed in Patent Document 1, a thin rod-shaped transfer body that also serves as a detachable body is provided on one side of a plurality of stages of hot plates so as to be able to reciprocate. In a drying method using a drying apparatus of a type in which a veneer is taken in and out from one side, a dried veneer adhered to a hot platen by melting resins etc. is removed from the hot plate by the transfer body. It takes a lot of blank time when the veneer is not dried until it is taken out after being detached and then inserted between the open hot discs. Even so, the processing efficiency is generally poor, and since the heat radiation time from the opened hot platen is long, there is a problem that the thermal efficiency tends to decrease, which is an impediment to practical use.

  Further, as in the invention disclosed in Patent Document 2, an appropriate number of grooves are formed in the heating surfaces of a pair of upper and lower heating plates, and an endless body having a number of piercing bodies that pierce a single plate at appropriate intervals. A type in which a belt is disposed so as to be able to travel into the groove of the hot platen, a single plate is inserted by the endless belt, and the single plate is conveyed from one side of each hot plate to the other side. In the drying method using the drying device, even if the dried veneer is stuck to the hot platen, it can be forcibly removed simply by transporting the veneer through an endless belt, However, since the blank time when the veneer is not dried can be reduced to the minimum, efficiency and thermal efficiency are relatively good, but the amount of veneer that can be dried by a pair of upper and lower hot plates is small. As a result, there is a weak point that the processing capacity is generally insufficient. Even if they are installed side by side, intermittent transport is indispensable, and the fact that the processing capacity cannot be increased to the extent that the occupied volume of the entire device can be expected is also an impediment to practical use. .

  In addition, as in the invention disclosed in Patent Document 3, an appropriate number of grooves are formed in the heating surface of a multistage hot platen, and an endless body having a large number of piercing bodies that pierce a single plate at appropriate intervals. A type in which a belt is disposed so as to be able to travel into the groove of the hot platen, a single plate is inserted by the endless belt, and the single plate is conveyed from one side of each hot plate to the other side. In the drying method using the drying apparatus, efficiency and thermal efficiency are relatively good as in the invention of Patent Document 2, and insufficient processing capacity can be covered to some extent by increasing the number of heating plates. In a drying device of the type, if the heating plate is multi-staged, it is necessary to return the endless belt at the part where the veneer is not pierced. It is essential to drill extra deep grooves to accommodate the In addition to the problem of excessive heat dissipation, heat dissipation from the sides of the four sides other than the heating surface increases and thermal efficiency deteriorates, including a lifting mechanism that raises and lowers the corresponding thick (heavy) multi-stage heating plate, Inevitably, there is a problem that the device is likely to be huge, and there is a problem that the amount of power consumed to operate the device increases, which is an impediment to practical use.

  The present invention was developed in order to eliminate such weak points, difficulties, disadvantages, etc. of the conventional invention. Specifically, a large number of hot plates arranged in parallel in the vertical direction are arranged at the top or In order to obtain the operation of the elevating operation member that engages with the lowermost heat plate and the regulation of the coupling mechanism that engages with each heat plate, the appropriate elevating operation member and the appropriate Are connected to each of the required heating plates, and extend in the left-right direction of the upper surface of the heating plate having a heating surface on the upper side, and in parallel with an appropriate interval in the front-rear direction. The plurality of receiving grooves having appropriate depths, which are perforated, have a length that is appropriately longer than twice the length of the receiving groove and a height that is less than the depth of the receiving groove, and A substantially long saw-like single plate transfer member in which a large number of piercing bodies having a height protruding from the receiving groove are juxtaposed in an appropriate portion on the upper side. In order to reciprocate the single plate transfer member of each stage in the left-right direction at the same time, an appropriate reciprocating mechanism is engaged with the single plate transfer member of each stage, A veneer conveying member that conveys a veneer in a direction orthogonal to the moving direction of the veneer transfer member is heated in the vicinity of the veneer transfer member that protrudes from each receiving groove to the left and right sides of the hot platen along with the movement in the left and right direction. A drying method for drying a single plate using a multi-stage hot plate type drying device arranged so as to be interchangeable in a vertical direction with respect to a single plate transfer member that moves up and down following the raising and lowering of the plate, In any of the multistage stages, after transferring the veneer loaded from the carry-in port set on the left front side of the drying apparatus to the veneer transfer member via the veneer transfer member, the veneer transfer member is Through a single plate transfer member after drying by hot pressure of the hot platen Transfer to the left side of the panel, transfer from the veneer transfer member to the veneer transport member, and carry it out to the outlet set on the left rear side of the drying device, and the inlet set on the right front side of the drying device After transferring the veneer loaded from the veneer to the veneer transfer member via the veneer transfer member, it is transferred to the interval of the hot platen via the veneer transfer member, and then dried by hot pressure of the hot platen, It is alternately transferred to the right side of the heating plate via the veneer transfer member, and further transferred from the veneer transfer member to the veneer transfer member and carried to the outlet set on the right rear side of the drying device. A veneer drying method (Claim 1) characterized in that it is implemented is proposed as a basic invention.

  Further, as a drying apparatus that can be used in the implementation of the basic invention, a plurality of heating plates arranged in parallel in the vertical direction operate the lifting operation member that engages the uppermost or lowermost heating plate, and In order to obtain the regulation of the coupling mechanism that engages with the heating plate, and to move the appropriate lifting operation member and the appropriate coupling mechanism to each of the required heating plates so as to approach and average the distance from each other. A plurality of receiving grooves having appropriate depths extending in the left-right direction of the upper surface of the heating plate having a heating surface on the upper side and formed in parallel in the front-rear direction at an appropriate interval, A number having a length that is appropriately longer than twice the length of the receiving groove and a height that is less than the depth of the receiving groove, and a height that protrudes from the receiving groove at an appropriate upper portion. A plurality of substantially long saw-shaped veneer transfer members, in which the piercing bodies are juxtaposed in parallel, are accommodated in parallel, In order to reciprocate the feeding members in the left and right directions at the same time, an appropriate reciprocating mechanism is engaged with the single plate transfer member in each stage, and further, the left and right sides of the hot platen are moved from each housing groove as the movement in the left and right directions In the vicinity of the protruding single plate transfer member, a single plate transfer member that transfers the single plate in a direction orthogonal to the moving direction of the single plate transfer member is opposed to the single plate transfer member that moves up and down following the heating plate. A multi-stage hot plate type drying device arranged so as to be interchangeable in the vertical direction, and in any of the multi-stages, a single plate carried from the carry-in port set on the left front side of the drying device After being transferred to the single plate transfer member via the single plate transfer member, the single plate transfer member is transferred to the interval between the hot plates via the single plate transfer member, and then dried by the hot pressure of the hot plate, To the left side of the heating plate, and further transferred from the single plate transfer member to the single plate transfer member for drying. After carrying out the operation of carrying out to the carry-out port set on the left rear side of the apparatus and the single plate carried in from the carry-in port set on the right front side of the drying device, the single plate is transferred to the single plate transfer member via the single plate transfer member. It is transferred into the interval of the hot platen via the plate transfer member, and then dried to the right side of the hot platen via the single plate transfer member after drying by hot pressure of the hot plate, and further from the single plate transfer member. It is provided with a control mechanism for controlling the operation of each of the devices so as to alternately carry out the operation of transferring to the plate conveying member and carrying it out to the carry-out port set on the right rear side of the drying device. 3. A single plate drying apparatus (Claim 2) and an appropriate number of roll-shaped single plate conveying members arranged in parallel within the interval between a plurality of single plate transfer members. A single plate drying device (Claim 3) and a minimum interval when the heating plates approach each other protrude from the housing groove. 4. A veneer drying apparatus (Claim 4) comprising a regulating member that regulates the height of the piercing body to be appropriately larger than the height of the piercing body of the portion, and at least on the lower side A relief groove that allows the intervention of only the protruding portion of the piercing member of the veneer transfer member accommodated in each accommodation groove of the heating plate located below is symmetrical to the accommodation groove on the lower surface of the heating plate having the heating surface. A single plate drying apparatus according to claim 2 or claim 3 (Claim 5) is provided.

  According to the method for drying a veneer according to the first aspect, the multistage hot plate type drying apparatus having the above-described configuration is used. The veneer loaded from the carry-in entrance is dried by the hot pressure of the hot platen and carried out to the carry-out port on the left rear side of the dryer, and the veneer carried from the carry-in port on the right front side of the dryer is heated. Drying by the heat pressure of the panel and carrying out the operation of carrying out to the right rear outlet of the drying device alternately, and drying the veneer almost without interruption, Compared to the invention, it is possible to carry out a drying process that is more efficient than the invention, as well as the veneer transfer member is reciprocated to transfer the veneer alternately into and out of the space between the hot plates. In principle, the groove only needs to be on the top side of the hot platen, and it is not necessary to make the thickness of the hot plate excessively thick. To reduce the heat radiation from the surface, it is possible to prevent the deterioration of the thermal efficiency, generally, the size of the apparatus and is effective since the reduction of the power required can aim. Thus, the veneer drying apparatus according to claim 2 is suitable for carrying out the veneer drying method according to claim 1.

  Further, as in the single-plate drying apparatus according to claim 3, if an appropriate number of roll-shaped single-plate transport members arranged in parallel within the interval between a plurality of single-plate transfer members are used, With a simple configuration, it is possible to carry in and out a single plate stably.

  Also, when carrying out the drying method, there is a possibility that problems may occur in the drying apparatus having the above-described configuration if it is considered not to neglect to carry in a single plate in any of the multiple stages. There is nothing, but if there is a mistake in carrying a veneer into any stage by mistake, when the hot plates are brought close to each other, the piercing body of the veneer transfer member that has not pierced the veneer, and Since the upper heating plate facing the piercing body comes into contact with each other, there is a risk that both of them may be damaged, so that the contact can be avoided as in the single plate drying apparatus according to claim 4 or 5. It is safe to add configuration.

  In other words, the veneer drying apparatus according to claim 4 is controlled so that the minimum interval when the hot plates approach each other is appropriately wider than the height of the piercing body protruding from the receiving groove. A piercing body of a veneer transfer member that does not pierce a veneer, even if there is a mistake in carrying a veneer into any stage, There is no risk of contact with the upper heating plate facing the piercing body. Incidentally, even though heat dissipation may increase slightly due to the lack of close contact with the heating plate at the stage where the veneer is not loaded, the lack of veneer loading is a small number of exceptional matters. There is no particular problem.

  On the other hand, the veneer drying apparatus according to claim 5 is configured so that each of the heating plates positioned below is provided on the lower surface of a heating plate having a heating surface at least on the lower side (excluding the lowest heating plate, an upper heating plate). A relief groove that allows only the protruding portion of the piercing body of the veneer transfer member accommodated in the accommodation groove is drilled symmetrically with each of the accommodation grooves. There is no possibility that the piercing member of the single plate transfer member that has not pierced the single plate and the upper heating plate facing the piercing member contact each other even if the veneer is not carried into the plate. For this reason, the escape groove may be a shallow groove that is sufficient to allow only the protruding portion of the piercing body to intervene. Therefore, it is not necessary to excessively increase the thickness of the corresponding hot platen. When the board is not carried in, close contact of the corresponding hot plate is ensured, so that it is possible to avoid deterioration of thermal efficiency due to increase in heat radiation.

It is front explanatory drawing of the drying apparatus which concerns on this invention. It is side surface explanatory drawing of the drying apparatus illustrated in FIG. It is a partially broken plane explanatory view of the drying apparatus illustrated in FIG. It is front explanatory drawing of a single plate transfer member. It is a perspective explanatory view of a connecting member. It is a partial perspective explanatory view of a heating board. It is front operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3. FIG. 4 is a side operation explanatory diagram of the drying apparatus illustrated in FIGS. 1 to 3. It is plane operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3. It is plane operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3. It is plane operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3. It is plane operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3. It is plane operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3. It is plane operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3. It is plane operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3. It is plane operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3. It is plane operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3. It is a partially broken side surface explanatory view of a different example of a hot platen. It is front explanatory drawing of the Example from which the drying apparatus which concerns on this invention differs. It is side surface explanatory drawing of the drying apparatus illustrated in FIG. It is plane explanatory drawing of the drying apparatus illustrated in FIG. It is front operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. It is side surface operation explanatory drawing of the drying apparatus illustrated in FIGS.

  Hereinafter, the present invention will be described in further detail together with an example of the embodiment illustrated in the drawings, but there are no particular restrictions on the modes of the operating members and operating mechanisms that operate the various members of the drying apparatus, and various known modes of operating members Since it is possible to use an operating mechanism, for the sake of simplifying the drawing, the control mechanism and the control system circuit (wiring, etc.) for controlling the operation of each operating member and operating mechanism are also shown. ) Is also not shown in the drawing, since there are no particular restrictions on its configuration. In addition, members common to the embodiments are denoted by the same reference numerals, and redundant description is omitted.

  1 is a front explanatory view of a drying apparatus according to the present invention, FIG. 2 is a side explanatory view of the drying apparatus illustrated in FIG. 1, and FIG. 3 is a partially broken view of the drying apparatus illustrated in FIG. 4 is a front explanatory view of a single plate transfer member, FIG. 5 is a perspective explanatory view of a connecting member, FIG. 6 is a partial perspective explanatory view of a heating plate, and FIG. These are front operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3, FIG. 8 is side operation | movement explanatory drawing of the drying apparatus illustrated in FIGS. 1-3. In the figure, 1 is a substantially long saw-shaped single plate transfer member accommodated in each of the accommodation grooves 3a of the hot platen 3 to be described later, each of which is appropriately more than twice the length of the accommodation groove 3a. It has a length that is longer than the dimension and a height that is less than the depth of the receiving groove 3a (height excluding the hook-shaped portion 1a and the piercing member 1c, which will be described later). The portions 1a are provided with a plurality of piercing bodies 1c having heights protruding from the receiving grooves 3a in the vicinity of the hook-shaped portions at both ends and at the central portion other than the clearance portions, and a control (not shown) is provided. Based on the control of the mechanism, the operation of a reciprocating mechanism 7 to be described later is obtained, and it is moved simultaneously in the left-right direction at an appropriate time, and the single plate a is alternately transferred into and out of the intervals of the respective heating plates 3.

  2 is a connection example that is a specific example of a connection member that connects a plurality of (three in the illustrated example) single plate transfer members 1 accommodated in the accommodation grooves 3a of each stage of the heating plate 3 at both ends. A plurality of annular flanges 2a for restricting the mounting position of the single plate transfer member 1 and the rolling bearing 2b, and two movable members 7b of a reciprocating mechanism 7 described later. A pincushion-like engagement member 2 b, and transmits the operation of the movable member 7 b to each single plate transfer member 1.

  Reference numeral 3 denotes a heating plate heated to an appropriate temperature by an appropriate heat source such as heating steam, heating oil, or an electric heater, and is fixed to an elevating operation member 10 described later via a washer 4 with a heat insulating material. In order to accommodate the single plate transfer member 1 on the upper surface of the lower heating plate 3 having the heating surface on the upper side, excluding the heating plate 3, a plurality of strips extending in the left-right direction with an appropriate depth ( In the illustrated example, three (3) receiving grooves 3a are formed in parallel in the front-rear direction with an appropriate interval. Each heating plate 3 includes a pair of front and rear support rods 5 fixed to the uppermost heating plate 3, and a pair of front and rear connection rods 6 fixed to each lower heating plate 3 excluding the uppermost heating plate 3. The support rods 5 and the connection rods 6 are connected to the connection rods 6a through the connection screws 6a and the like so as to be evenly approached and separated from each other. Each time the veneer a is transferred, an operation of a lifting operation member 10 described later is obtained based on the control of a control mechanism (not shown), and the veneer a is heated and dried when they are brought close to each other. Furthermore, when the regulating action of the regulating screw 6b attached to each connecting rod 6 is obtained, the minimum interval when approaching each other is higher than the height of the piercing body 1a at the portion projecting from the housing groove 3a. In order to prevent the tip of the piercing body 1a from coming into contact with the upper heating plate 3 even if the single plate a is mistakenly missed in any of the steps, it is regulated to be appropriately widened. Has been.

  7 is a pair of front and rear left and right guide rails 7a fixed to the base 11, a columnar movable member 7b with an elongated window fitted to each of the guide rails 7a so as to be movable in the left and right directions, screws, chains, and the like And a reciprocating mechanism having a moving mechanism (not shown) including a drive source composed of a motor with a speed reducer, etc., and the movable member is timely based on control of a control mechanism (not shown). 7b, the engaging member 2b, the connecting shaft 2, etc., the single plate transfer member 1 is alternately moved in the left-right direction all at once.

  Reference numeral 9 denotes a plurality of rolls 9a which are examples of the single plate conveying member, a bearing member 9b fixed to the base 11, and the bearing 2b fixed to the lowermost and second connecting rod 6 from below. A pair of left and right transport mechanisms including a bearing member 9c also serving as a guide member, a drive source 9d including a motor with a speed reducer attached to the last roll 9a of each stage, and the like With the operation, the roll 9a for each stage is displaced between the state shown in FIGS. 1 and 2 and the state shown in FIGS. 7 and 8, and the height direction relative to the single plate transfer member 1 for each stage. By switching to, it is equipped to move the veneers a to each other, and further, it is controlled at the control mechanism (not shown), and it is driven in a timely manner and set to the left front side and the right front side of the drying device, respectively. An undried veneer a that has been individually loaded from the carry-in entrance is suitable for the veneer transfer member 1 Until forming a function of conveying, and a function of The dried veneer a releasing the thorns adhesion by veneer transfer member 1, is carried out from the carry-out port which is respectively set to the left rear side and right rear side of the drying apparatus.

  Reference numeral 10 denotes a lifting operation member composed of a fluid cylinder or the like, the base end side of which is fixed to the machine frame / ceiling, etc., and the movable end side thereof is fixed to the uppermost heating plate 3a via a washer 4 with a heat insulating material. Then, with the control of a control mechanism (not shown), it is actuated in a timely manner, and the plurality of heating plates 3 are evenly approached (see FIGS. 7 and 8) and separated (see FIGS. 1 and 2). .

  The drying device is provided with a control mechanism in addition to the respective devices, and appropriately controls the operation of the respective devices. However, the control mode of the control mechanism is extremely diverse. In addition, since it is important to control step by step while closely relating to the operating state of each device, the plane operation explanatory diagram of the drying device illustrated in FIGS. The operation mode of the drying apparatus and the operation mode of each device will be described together.

  The method for drying a veneer according to the present invention can be carried out by using a drying apparatus configured with each of the above-mentioned devices, for example, and initially, the heating plates 3 are brought close to each other. The operation of the lifting / lowering operation member 10 is controlled via the control mechanism so as to wait at the standby position (see FIGS. 7 and 8), and each single plate transfer member 1 is arranged on either the left or right side, for example, the left side. The operation of the reciprocating mechanism 7 is controlled via the control mechanism so as to wait at the standby position (see FIGS. 1 and 3). Initially, since the single plate a is not inserted between the heating plates 3, each heating plate 3 approaches a little more than the state of FIGS. Since the minimum interval is regulated by the regulating action, there is no possibility that the tip of any piercing body 1a abuts on the upper heating platen 3.

  Thus, when each veneer transfer member 1 is waiting at the left standby position, the left transport mechanism 9 is operated, and through an appropriate insertion mechanism such as a roll feeder, FIG. As illustrated, the single plates a1, a2, and a3 are carried from the carry-in port set on the left front side of the drying apparatus, and the single plates a1, a2, and a3 are transferred to the transfer position indicated by the dotted line, and then the transfer is stopped. Thus, the operation of the transport mechanism 9 is controlled via the control mechanism. As a means for transmitting a signal for determining the stop timing of the single plate conveyance, for example, each stage of the conveyance mechanism 9 is provided with a single plate detector (not shown) composed of a reflective photoelectric tube switch or the like, and the tip of the single plate Means for detecting the arrival of a signal and transmitting a required signal, or means for transmitting a required signal in a timely manner by associating a single plate insertion operation of the insertion mechanism with the transport speed of the transport mechanism, for example. However, there is no particular limitation on the form, and the point is that any means capable of transmitting a required signal is sufficient.

  Thereafter, when the operation of the elevating operation member 10 is controlled via the control mechanism so that the heat plates 3 are isolated from each other, the roll of the left transport mechanism 9 is moved along with the rise of the heat plates 3. Since the single plates a1, a2, and a3 existing on 9a are transferred onto the piercing body 1a of the single plate transfer member 1 (see FIG. 1), next, as illustrated in FIG. By moving the veneer transfer member 1 to the right side through the reciprocating mechanism 7, the veneers a1, a2, and a3 are transferred into the interval between the hot plates 3, and then the hot plates 3 are moved to each other. When the operation of the lifting / lowering operation member 10 is controlled through the control mechanism so as to be close to each other, each single plate a1, a2, a3 is hot-pressed by each hot platen (see FIG. 8). At that time, the tip side portion of the piercing body 1a protruding from the receiving groove 3a of the hot plate is pierced by the single plates a1, a2, and a3.

  Next, as illustrated in FIG. 11, the right transport mechanism 9 is operated via the control mechanism, and the single plates a4, a5, and a6 are loaded from the carry-in port set on the right front side of the drying device. After transporting a4, a5, and a6 to the transfer position indicated by the dotted line, the operation of the right transport mechanism 9 is controlled via the control mechanism so as to stop the transport. Note that the signal transmitting means for determining the stop timing of the veneer conveyance conforms to the description in the paragraph “0024”.

  Then, when the operation of the elevating operation member 10 is controlled through the control mechanism so that the respective heat plates 3 are separated from each other when a predetermined hot press time has elapsed, as the heat plates 3 rise. Since the single plates a4, a5, a6 existing on the roll 9a of the right transport mechanism 9 are transferred onto the piercing body 1a of the single plate transfer member 1, the control mechanism and the reciprocating mechanism are next moved. 12, the single plate transfer member 1 is moved to the left side as indicated by an arrow in FIG. 12, so that the single plates a <b> 1, a <b> 2, a <b> 3 are moved out of the interval of each heating plate 3 as illustrated in FIG. 13. And the single plate a4, a5, a6 are transferred into the interval between the respective heating plates 3, and then the raising / lowering operation member 10 is connected via the control mechanism so as to bring the respective heating plates 3 closer to each other. When the operation of the single plate a4, a5, a6 is controlled by the hot platen 3, a1, a2, and a3 are brought into contact with the roll 9a of the left transport mechanism 9, so that the sticking of the transfer member 1 by the piercing body 1a is released and transferred onto the roll 9a of the left transport mechanism 9 (FIG. 7).

  Therefore, as illustrated in FIG. 13, the left transport mechanism 9 is operated via the control mechanism, and the single plates a7, a8, and a9 are carried from the carry-in port set on the left front side of the drying apparatus, and the transfer described above is performed. After transporting to the position, as well as stopping the transport, as illustrated in FIG. 14, the dried single plates a1, a2, and a3 are carried out to the carry-out port set on the left rear side of the drying apparatus.

  Then, when the operation of the elevating operation member 10 is controlled through the control mechanism so that the respective heat plates 3 are separated from each other when a predetermined hot press time has elapsed, as the heat plates 3 rise. Since the single plates a7, a8, a9 existing on the roll 9a of the left transport mechanism 9 are transferred onto the piercing body 1a of the single plate transfer member 1, the control mechanism and the reciprocating mechanism are next moved. 14, the single plate transfer member 1 is moved to the right side as indicated by an arrow in FIG. 14, so that the single plates a 4, a 5, and a 6 are moved out of the space between the heating plates 3 as illustrated in FIG. And the single plate a7, a8, a9 are transferred into the interval between the respective heating plates 3, and then the raising / lowering operation member 10 is connected via the control mechanism so as to bring the respective heating plates 3 closer to each other. When the operation of the single plate is controlled, each single plate a7, a8, a9 is hot-pressed by each hot platen 3 and transferred. Member veneer a4 that thorn adhesion is released by piercing body 1a of 1, a5, a6 is ERROR on a roll 9a of the right conveying mechanism 9.

  Therefore, as illustrated in FIG. 15, the right transport mechanism 9 is operated via the control mechanism, and the single plates a10, a11, and a12 are loaded from the carry-in port set on the right front side of the drying device, and the above-mentioned transfer is performed. After transporting to the position, as well as stopping the transport, as illustrated in FIG. 16, the dried single plates a4, a5, and a6 are transported to the transport outlet set on the right rear side of the drying apparatus.

  Then, when the operation of the elevating operation member 10 is controlled through the control mechanism so that the respective heat plates 3 are separated from each other when a predetermined hot press time has elapsed, as the heat plates 3 rise. Since the single plates a10, a11, a12 existing on the roll 9a of the right transport mechanism 9 are transferred onto the piercing body 1a of the single plate transfer member 1, the control mechanism and the reciprocating mechanism are next moved. 16, the single plate transfer member 1 is moved to the left side as indicated by an arrow in FIG. 16, so that the single plates a7, a8, and a9 are moved out of the space between the respective heating plates 3 as illustrated in FIG. And the single plate a10, a11, a12 are transferred into the interval between the respective heating plates 3, and then the raising and lowering operation member 10 is connected via the control mechanism so as to bring the respective heating plates 3 closer to each other. When the operation of the single plate a10, a11, a12 is controlled by each hot platen 3, With the, transfer member 1 of the piercing member 1a veneer a7 that thorn adhesion is released by, a8, a9 is ERROR on a roll 9a on the left side of the transport mechanism 9 (see FIG. 7).

  Then, the left transport mechanism 9 is operated again through the control mechanism, and the single plates a13, a14, a15 are carried from the carry-in port set on the left front side of the drying apparatus as shown by the arrows in FIG. After transporting to the transfer position, together with stopping the transport, the dried single plates a7, a8, a9 are carried out to the carry-out port set on the left rear side of the drying apparatus. Thereafter, by repeating the same operation sequentially, the veneer can be dried almost without interruption.

  According to the method for drying a veneer as described above, in any of the multistage stages, the veneer carried from the left front entrance of the drying device is dried by the hot pressure of the hot platen and dried. Operation to carry out to the outlet on the left rear side of the device, and the veneer loaded from the inlet on the right front side of the drying device are dried by the hot pressure of the hot platen, and then delivered to the outlet on the right rear side of the drying device Since the veneer is subjected to the drying process and the veneer is dried almost without interruption, it is of course possible to perform the drying process more efficiently than the above-mentioned conventional inventions. Since the veneer transfer member is reciprocated to move the veneer alternately in and out of the space between the hot plates, the receiving groove is basically only on the upper surface side of the hot plate, and the thickness of the hot plate is reduced. Since it is not necessary to make it excessively thick, heat dissipation can be reduced by reducing heat dissipation from the four sides of the surface other than the heating surface, Flip, the size of the apparatus and is effective since the reduction of the power required can aim.

  As illustrated in the above embodiment, a drying apparatus in which an appropriate number of roll-shaped single plate conveying members are arranged in parallel within the interval between a plurality of single plate transfer members is relatively simple. Although it is convenient that the single plate can be carried in and out stably with the configuration, the form of the single plate conveying member is not limited to a roll shape and is not shown in the figure. In short, a single plate conveying member having a configuration in which a single plate is carried in and out in a desired direction is sufficient, such as several brazed shafts or an appropriate number of endless chains.

  In addition, the drying device provided with the restriction screw as exemplified in the above-described embodiment and restricting the minimum interval when the heating plates approach each other does not erroneously carry a single plate into any stage. However, there is no possibility that the piercing body of the veneer transfer member that has not pierced the veneer and the upper heating plate facing the piercing body will come into contact with each other. When the thickness changes, it is easy to change the minimum interval by the action of the screw, but the form of the restricting member used for restricting the minimum interval is not limited to the restricting screw, and the illustration is omitted. However, for example, if the thickness of a single plate to be processed is constant, the regulation interval is also constant, so there is no problem even if it is a simple bar shape, column shape, plate shape, or the like. Any form that can be regulated is sufficient.

  Next, FIG. 18 is a partially cutaway side view of a different example of a heating plate, in which 3b is a heating plate having a heating surface at least on the lower side (excluding the lowermost heating plate, the upper plate). A single plate accommodated in each receiving groove 3a, which is a relief groove formed in the lower surface of the heating plate 3 and is located symmetrically to each receiving groove 3a of the lower heating plate 3 It has a depth that allows only the protruding portion of the piercing body 1c of the transfer member 1 to be intervened.

  When using the drying apparatus provided with the heating plate 3 having the escape groove 3b as described above, there is a possibility that the single plate a is not carried into one of the steps (in the illustrated example, the central step). Even if it exists, there is no possibility that the piercing body 1c of the veneer transfer member 1 that has not pierced the veneer a and the upper heating platen 3 facing the piercing body 1c will contact each other. Arrangement is useless.

  On the other hand, FIG. 19 is a front explanatory view of a different embodiment of the drying apparatus according to the present invention, FIG. 20 is a side explanatory view of the drying apparatus illustrated in FIG. 19, and FIG. It is a plane explanatory view of a drying device. In the figure, 15 is a pair of front and rear support rods attached to the uppermost heating plate 3 fixed to the machine frame, ceiling, etc. via a washer 4 with a heat insulating material, which is the same as in the previous embodiment. A plurality of lower heating plates 3 are supported through the connecting rod 6, connecting screw 6a, regulating screw 6b, and the like, which are configured so as to be able to approach and be separated from each other, and the single plate transfer member 1 for each stage. Is provided with a reciprocating mechanism 7 having the same configuration as in the previous embodiment.

  21 is a lifting plate attached to the distal end side of the lifting and lowering operation member 10 composed of a fluid cylinder or the like whose base end side is fixed to a base, a floor, etc., and a washer 4 with a heat insulating material; A pair of left and right transport mechanisms 9 having the same configuration is provided, and each heating plate 3 is provided via a washer 4 when the elevating operation member 10 is lifted by obtaining control of a control mechanism (not shown). Is raised evenly.

  Even if the drying apparatus configured as described above is used, it is possible to carry out the method for drying a single plate according to the present invention. Initially, each heating platen 3 is placed in a standby position ( As shown in FIGS. 22 and 23), the operation of the lifting / lowering operation member 10 is controlled via the control mechanism, and each single plate transfer member 1 is at one of the left and right sides, for example, the left standby position. The operation of the reciprocating mechanism 7 is controlled via the control mechanism so as to wait. As in the previous embodiment, since the single plate a is not inserted between the hot plates 3 at the beginning, each hot plate 3 approaches slightly more than the state shown in FIGS. Also, since the minimum interval is regulated by the regulating action of the regulating screw 6b, there is no possibility that the tip of the piercing body 1a contacts the upper heating platen 3.

  Thus, when each single plate transfer member 1 is waiting at the left standby position, the left transport mechanism 9 is operated and set to the left front side of the drying device via an appropriate insertion mechanism. The control mechanism is configured so that the single plate a is loaded from the carry-in entrance for each stage, and the single plate a for each stage is transported to the transfer position indicated by the dotted line in FIG. When the operation of the lifting and lowering operation member 10 is controlled via the control mechanism so that the operation of the transport mechanism 9 is controlled via the control mechanism and then the respective heat discs 3 are isolated from each other, the lowering of each heat disc 3 Accordingly, the single plate a on the roll 9a of the left transport mechanism 9 is transferred onto the piercing body 1a of the single plate transfer member 1 for each stage (see FIG. 19). By moving the veneer transfer member 1 to the right side through the control mechanism and the reciprocating mechanism 7, the veneer a for each stage is moved to each heat. 3 and then the operation of the elevating operation member 10 is controlled via the control mechanism so that the respective heating plates 3 are brought close to each other, the single plate a for each stage becomes It is hot-pressed by the board 3 (see FIGS. 22 and 23).

  Next, via the control mechanism, the right transport mechanism 9 is operated, and the single plate a is carried in for each stage from the carry-in port set on the right front side of the drying apparatus, and the single plate a for each stage is After transporting to the transfer position indicated by the dotted line in FIG. 21, the operation of the right transport mechanism 9 is controlled via the control mechanism so as to stop the transport, and then when a predetermined hot pressure time has elapsed. When the operation of the elevating operation member 10 is controlled via the control mechanism so that the heat plates 3 are isolated from each other, the rolls 9a of the transport mechanism 9 on the right side are moved as the heat plates 3 are lowered. Since the existing single plate a is transferred onto the piercing body 1a of the single plate transfer member 1 for each stage, the single plate transfer member 1 is moved to the left side through the control mechanism and the reciprocating mechanism 7. To move the single plate a existing within the interval between the hot plates 3 to the outside of the interval between the hot plates 3, and When the operation of the elevating operation member 10 is controlled via the control mechanism so that the single plate a located on the right side is transferred into the space between the heat plates 3 and then the heat plates 3 are moved closer to each other. The single plate a existing within the interval between the hot plates 3 is hot-pressed by the hot plate 3 and the single plate a transferred to the left side of the hot plate 3 is a roll 9a of the left transport mechanism 9. , The sticking by the piercing body 1a of the transfer member 1 is released, and the transfer member 1 is transferred onto the roll 9a of the transport mechanism 9 on the left side.

  Therefore, the left side transport mechanism 9 is operated via the control mechanism, and the single plate a to be newly processed for each stage is loaded from the carry-in port set on the left front side of the drying apparatus, and is transported to the transfer position. After that, the conveyance is stopped, and the operation of the left conveyance mechanism 9 is controlled via the control mechanism so that the dried single plate a is carried out to the carry-out port set on the left rear side of the drying apparatus. Then, when the operation of the elevating operation member 10 is controlled through the control mechanism so that the respective heat plates 3 are separated from each other after a predetermined hot press time has elapsed, as each heat plate 3 is lowered. Since the single plate a on the roll 9a of the left transport mechanism 9 is transferred onto the piercing body 1a of the single plate transfer member 1 for each step, the control mechanism and the reciprocating mechanism 7 are next moved. The single plate which exists in the space | interval of each hot platen 3 by moving the single plate transfer member 1 to the right side via Is moved out of the space between the heat plates 3, the single plate a located on the left side of the heat plates 3 is moved into the space between the heat plates 3, and then the heat plates 3 are moved closer to each other. When the operation of the lifting / lowering operation member 10 is controlled through the control mechanism, the single plate a existing within the interval between the hot plates 3 is hot-pressed by the hot plates 3 and the hot plates 3. The single plate a transferred to the right side is transferred onto the roll 9a of the right transport mechanism 9.

  Therefore, the right transport mechanism 9 is operated via the control mechanism, and the single plate a to be newly processed is loaded for each stage from the transport inlet set on the right front side of the drying apparatus, and transported to the transfer position. After that, the conveyance is stopped, and the operation of the right conveyance mechanism 9 is controlled via the control mechanism so that the dried single plate a is carried out to the carry-out port set on the right rear side of the drying apparatus. Then, when the operation of the elevating operation member 10 is controlled through the control mechanism so that the respective heat plates 3 are separated from each other after a predetermined hot press time has elapsed, as each heat plate 3 is lowered. Since the single plate a existing on the roll 9a of the right transport mechanism 9 is transferred onto the piercing body 1a of the single plate transfer member 1 for each stage, the control mechanism and the reciprocating mechanism 7 are next moved. The single plate which exists in the space | interval of each hot platen 3 by moving the single plate transfer member 1 to the left side via Are moved out of the space between the heat plates 3, the single plate a located on the right side of the heat plates 3 is moved into the space between the heat plates 3, and then the heat plates 3 are moved closer to each other. When the operation of the lifting / lowering operation member 10 is controlled through the control mechanism, the single plate a existing within the interval between the hot plates 3 is hot-pressed by the hot plates 3 and the hot plates 3. The single plate a transferred to the left side is transferred onto the roll 9a of the left transport mechanism 9.

  Therefore, the left side transport mechanism 9 is operated again via the control mechanism, and the single plate a to be newly processed for each stage is loaded from the carry-in port set on the left front side of the drying apparatus, and is conveyed to the transfer position described above. After that, the conveyance is stopped and the dried single plate a is carried out to the carry-out port set on the left rear side of the drying apparatus. Thereafter, by repeating the same operation sequentially, the veneer can be dried with almost no interruption as in the case of the previous embodiment.

  In addition, about the example of a design change regarding the transmission means of the signal which determines the stop timing of the veneer conveyance, the restriction means of the minimum interval of the heating plate, etc., as in the case of the above-mentioned embodiment, as long as the desired function can be achieved. It can be changed to. Moreover, as a raising / lowering operation member used for the drying apparatus according to the present invention, a fluid cylinder as shown in the illustrated example is simple, but the point is that it is a member that can perform a function of raising and lowering a plurality of heating plates evenly. However, it is not necessarily limited to the fluid cylinder.

  Further, the number of slots and the drilling interval of the housing grooves for housing the veneer transfer member may be determined based on experiments corresponding to the thickness and size of the veneer to be processed. Also, the length of the veneer transfer member is required to be longer than twice the length of the receiving groove, and the length of the connecting hook-shaped part at the left and right ends and the length of the clear part at the center part are set. Including, there is no problem if it is appropriately set according to the design dimensions of the entire drying apparatus. In addition, the shape of the piercing body protruding from the veneer transfer member is preferably a wedge shape as illustrated in the above embodiment from the viewpoint of ease of formation, but the main point is due to the adhesive action of resin or the like. Thus, it is sufficient that the veneer that can be attached to the heating plate can be pierced to such an extent that it can be forcibly removed. Therefore, the design may be changed to a shape other than the wedge shape.

  In addition, the piercing body of the veneer transfer member has the effect of regulating the overall contraction that accompanies drying of the veneer, in addition to the action of forcibly removing the veneer that may stick to the hot platen. As a result, a small crack that is slightly wider than the original sticking mark remains on the part where the sticking has been made (the small crack extends to the surface on the side opposite to the face on which the projecting stick is stuck). There are many examples that reach in an enlarged manner, but the illustration is omitted in the above example). However, since the effect of increasing the flexibility of the single plate is also exhibited, from the viewpoint of expecting such an effect, It is also meaningful to determine the number of plate transfer members, the shape of the piercing body, the protrusion spacing of the piercing body, the piercing depth of the piercing body, and the like based on experiments.

  In addition, the housing groove of the veneer transfer member also has a function of inducing and discharging the steam generated when the veneer is dried outward, and the steam stays inside the veneer. In addition, there is also an effect of preventing the possibility of the explosive damage of the veneer when releasing the heat pressure, but the illustration is omitted if necessary, but the heating surface of each hot plate is used for steam discharge. A very shallow discharge groove may be drilled separately, and preferential drilling is recommended especially on the heating surface of the uppermost heating plate that does not have a receiving groove for a single plate transfer member.

  Further, in any of the above-described embodiments, naturally, it is possible to add a heating plate, and if necessary, increase the rigidity of the connecting rod attached to the supporting rod and the upper heating plate. It is appropriate to apply a reinforcing measure such as increasing the number of connecting screws. Further, as in the embodiment illustrated in FIGS. 19 to 21, a known hot plate for plywood can be used in place of the connecting screw as long as the uppermost heating plate is fixed and the lower heating plate is moved up and down. As with the press, support pillars with appropriate shapes are erected around the hot platen layer (for example, just outside the four corners) or around the drying device itself, and a plurality of stoppers with appropriate shapes are supported by the support. Attached in steps to the pillar, each heat plate (and connecting rod with a veneer conveying member) is evenly spaced and supported separately from the lower periphery at equal intervals. However, if such a support form is adopted, the total weight of the hot platen and the like can be more stably supported by the support pillar, so that it is equivalent to a known hot press for plywood. It is easy to use a multistage type.

  As is apparent from the above, the present invention significantly improves the practicality of a drying method using a hot plate type drying device that has not yet been widely used, and realizes an efficient and energy-saving drying process. In addition, there is a possibility that it can also be used for drying other plate-like bodies similar to a single plate, and the effect of implementing the present invention in this field is great.

1: Single plate transfer member 1a: Piercing body 2: Connection shaft 3: Heating plate 3a: Storage groove 3b of single plate transfer member: Escape groove 4: Washer 5 and 15 with heat insulating material: Support rod 6: Connection rod 6a: Connecting screw 6b: Restricting screw 7: Reciprocating mechanism 9: Conveying mechanism 9a: Roll 10: Lifting operation member 11: Base 21: Lifting board a: Single plate

Claims (5)

  A large number of heating plates arranged in parallel in the vertical direction obtain the operation of the lifting operation member that engages with the uppermost or lowermost heating plate and the regulation of the coupling mechanism that engages with each heating plate. In order to be close to each other and to be separated from each other on average, an appropriate lifting operation member and an appropriate connection mechanism are engaged with each of the required heating plates and extended in the left-right direction of the upper surface of the heating plate having a heating surface on the upper side. A plurality of receiving grooves having appropriate depths, which are formed in parallel with an appropriate interval in the front-rear direction, and have a length that is appropriately longer than twice the length of the receiving groove. And a plurality of piercing bodies having a height that protrudes from the receiving groove at an appropriate upper portion thereof in a side-by-side manner. In order to accommodate a plurality of plate transfer members in parallel, the single plate transfer members at each stage can be reciprocated in the horizontal direction at the same time. Engage the moving mechanism with each stage's veneer transfer member, and also move the veneer veneer in the vicinity of the veneer transfer member that protrudes from each receiving groove to the left and right sides of the heating plate as it moves left and right A multi-stage heating plate in which a single plate conveying member that conveys in a direction orthogonal to the moving direction of the transferring member is arranged to be interchangeable in the vertical direction with respect to the single plate conveying member that moves up and down following the heating plate. A drying method for drying a veneer veneer using a drying apparatus of the type, and in any stage of a multi-stage, veneer veneer carried from a carry-in port set on the right front side of the drying device, After being transferred to the veneer transfer member via the conveying member, it is transferred into the space between the hot plates via the veneer transfer member, and then heated via the veneer transfer member after drying by hot pressure of the hot platen. It is transferred to the right side of the panel, and further transferred from the veneer transfer member to the veneer transfer member. After carrying out the operation to carry out to the carry-out port set on the rear side and transferring the veneer veneer loaded from the carry-in port set on the left front side of the drying device to the veneer transfer member via the veneer transfer member, the veneer transfer It is transferred into the interval of the hot platen through the member, then, after drying by hot pressure of the hot platen, it is transferred to the left side of the hot platen through the single plate transfer member, and further, the single plate is transferred from the single plate transfer member A method for drying a veneer veneer, wherein the operation of transferring to a member and carrying it out to a carry-out port set on the left rear side of the drying device is alternately performed.   A large number of heating plates arranged in parallel in the vertical direction obtain the operation of the lifting operation member that engages with the uppermost or lowermost heating plate and the regulation of the coupling mechanism that engages with each heating plate. In order to be close to each other and to be separated from each other on average, an appropriate lifting operation member and an appropriate connection mechanism are engaged with each of the required heating plates and extended in the left-right direction of the upper surface of the heating plate having a heating surface on the upper side. A plurality of receiving grooves having appropriate depths, which are formed in parallel with an appropriate interval in the front-rear direction, and have a length that is appropriately longer than twice the length of the receiving groove. And a plurality of piercing bodies having a height that protrudes from the receiving groove at an appropriate upper portion thereof in a side-by-side manner. In order to accommodate a plurality of plate transfer members in parallel, the single plate transfer members at each stage can be reciprocated in the horizontal direction at the same time. Engage the moving mechanism with each stage's veneer transfer member, and also move the veneer veneer in the vicinity of the veneer transfer member that protrudes from each receiving groove to the left and right sides of the heating plate as it moves left and right A multi-stage heating plate in which a single plate conveying member that conveys in a direction orthogonal to the moving direction of the transferring member is arranged to be interchangeable in the vertical direction with respect to the single plate conveying member that moves up and down following the heating plate. In any type of multi-stage drying device, a veneer veneer loaded from a loading port set on the right front side of the drying device is transferred to a veneer transfer member via a veneer conveying member Then, it is transferred into the interval between the hot plates via the single plate transfer member, and then dried to the right side of the hot plate via the single plate transfer member after drying by hot pressure of the hot plate. Operation to transfer from the plate transfer member to the single plate transfer member and carry it out to the outlet set on the right rear side of the drying device The veneer veneer carried from the carry-in port set on the left front side of the drying device is transferred to the veneer transfer member via the veneer transfer member, and then transferred into the interval of the heating plate via the veneer transfer member. Then, after drying by hot pressure of the hot platen, it is transferred to the left side of the hot platen via the single plate transfer member, and further transferred from the single plate transfer member to the single plate transfer member to the left rear side of the drying device. A veneer veneer drying apparatus comprising a control mechanism for controlling the operation of each of the devices so as to alternately carry out the operation of carrying out to the set carry-out port.   3. The veneer veneer drying apparatus according to claim 2, wherein an appropriate number of roll-shaped veneer conveying members disposed in parallel with each other between a plurality of veneer transfer members are used.   3. A restriction member for restricting a minimum interval when the heating plates approach each other so as to be appropriately larger than a height of a piercing body at a portion protruding from the receiving groove. Item 4. A veneer veneer drying apparatus according to Item 3.   Relief grooves that allow the intervention of only the protruding portion of the piercing body of the veneer transfer member accommodated in each of the accommodation grooves of the lower heating platen are provided on the lower surface of the heating plate having a heating surface on the lower side. 4. The veneer veneer drying apparatus according to claim 2, wherein the veneer veneer is formed symmetrically with the receiving groove.

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