Separation method of air-permeable plate

Abstract

To allow an air-permeable plate to be taken out one by one at a low cost.SOLUTION: A separation method of air-permeable plate includes a placement step of placing a laminate L on which a plurality of air-permeable plates 10 is laminated, on a placement surface S, and an adsorption step of adsorbing the plate 10 on the outermost surface of the laminate L and raise it. In the placement step, a spacer 25a is installed between the placement surface S and the laminate L, and each plate 10 constituting the laminate L is elastically deformed in such a manner that a central part in the length direction of the laminate L further protrudes than both end parts in the length direction of the laminate L. In the adsorption step, both end parts in the length direction of the plate 10 on the outermost surface are adsorbed while pressing the central part in the length direction of the plate 10 on the outermost surface, and the plate 10 is raised in such a manner that at least one of both end parts in the length direction of the plate 10 is positioned above the central part in the length direction of the plate 10.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a method for separating air-permeable board materials. [Background technology]

[0002] In recent years, in the field of construction and the like, in order to minimize the processing of wooden boards at the construction site, it has become common to precut wooden boards to the desired shape and size in advance at a factory or the like. Here, in the precutting, for example, a suction conveying device equipped with a suction pad is used to automatically separate wooden boards one by one from a large number of stacked wooden boards, and the boards are automatically supplied to the next process in a state where they are cut or processed in the next process, and the processing machine is often operated automatically. However, when precutting boards having air permeability such as MDF (Medium Density Fiberboard), even if an attempt is made to suck only the topmost board using a suction conveying device equipped with a suction pad, several boards below it are also sucked. In that case, multiple boards are supplied to the next process as one board, and there is a risk of the processing efficiency decreasing due to, for example, the automatic operation of the processing machine being stopped.

[0003] For example, Patent Document 1 discloses a plate material suction and conveying device that includes an suction device that can vacuum-suck and raise and lower the topmost plate material among nearly horizontal plate materials stacked downward, a lateral shifting mechanism that shifts the topmost plate material laterally relative to the second and subsequent plate materials, and a second plate pressing mechanism that presses down the second plate material. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-199054 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the plate material suction and transport device disclosed in the above Patent Document 1 requires equipment such as a lateral shifting mechanism and a second-plate pressing mechanism to remove plate materials one by one, which increases the equipment costs and leaves room for improvement.

[0006] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to make it possible to take out breathable plate materials one by one at low cost. [Means for solving the problem]

[0007] In order to achieve the above object, the method for separating breathable board materials according to the present invention includes a step of placing a laminate on a placing surface, the laminate being made of a plurality of breathable board materials made of medium density fiberboard, particle board, volcanic vitreous laminate, gypsum board, or calcium silicate board, and a step of sucking the topmost board material of the laminate by vacuum suction and lifting it up. In the placing step, a spacer is placed between the placing surface and the laminate, so that the central part of the laminate in the longitudinal direction protrudes more than both ends of the laminate in the longitudinal direction. At the same time, the central portion of the laminate in the width direction protrudes more than both ends of the laminate in the width direction. In the adsorption step, both longitudinal ends of the outermost plate material are adsorbed under reduced pressure while the longitudinal central portion of the outermost plate material is held down, and the plate material is pulled up so that at least one of the longitudinal ends of the plate material is positioned higher than the longitudinal central portion of the plate material.

[0008] According to the above method, first, in the placing step, a spacer is provided between a placement surface on which a laminate formed by stacking a plurality of breathable plate materials is placed and the laminate, so that the central portion in the length direction protrudes more than both ends. At the same time, the central portion in the width direction protrudes more than both ends.The laminate is placed on the placement surface with each plate elastically deformed as shown in FIG. 1. Generally, in a laminate in which smooth and heavy plate materials are stacked, adjacent plate materials are in close contact with each other, so that the inside of the laminate is in a kind of reduced pressure state, and it is considered that it is difficult to separate the plate materials. In the placing step, the outermost plate of the laminate in which the plate materials are elastically deformed is not pressed from above, so that a force that tries to return to the original flat shape is applied, and the outermost plate is in a state in which the reduced pressure state is easily released. Furthermore, in the subsequent suction step, the longitudinal both ends of the outermost plate in the laminate in which the plate materials are elastically deformed in the placing step are sucked under reduced pressure while pressing the longitudinal center of the outermost plate, and the plate is pulled up so that at least one of the longitudinal both ends of the plate is located above the longitudinal center of the plate. Therefore, in the suction process, a gap is generated between at least one of the longitudinal ends of the first plate material from the top of the stack to be pulled up and the longitudinal ends of the second plate material from the top of the stack to be pulled up next, and air enters through the gap, eliminating the reduced pressure state and separating the plate material being pulled up from the plate material to be pulled up next. As a result, the plate material being pulled up and the plate material to be pulled up next can be separated simply by installing a spacer between the placement surface and the stack, so that breathable plate materials can be taken out one by one at low cost. Here, in the suction process, the plate material on the top surface of the stack is vacuum-suctioned and sucked, so that the plate material can be easily sucked up by, for example, contacting a suction pad connected to a vacuum means such as a vacuum fan or vacuum pump with the surface of the plate material. In addition, since the board material is medium density fiberboard, particle board, volcanic vitreous laminate board, gypsum board, or calcium silicate board, due to its breathability, for example, medium density fiberboard (MDF), which has been increasingly used in roof sheathing in recent years, can be pre-cut by automatic operation in a factory, etc. 。

[0009] above The spacer may be configured to support the laminate in a point-like manner from the rear surface.

[0010] According to the above method, in the placing step, spacers are provided between the placing surface and the laminate in the longitudinal and lateral central portions of the laminate, i.e., portions overlapping with the central portion of the laminate in plan view, so as to support the laminate in a point-like manner from the rear surface. This allows the laminate to be placed on the placing surface in a state in which each plate is elastically deformed so that its central portion protrudes beyond both ends in the longitudinal and lateral directions, i.e., so that its central portion protrudes beyond its peripheral ends in plan view.

[0011] In the adsorption step, the shape of the outermost surface of the plate material as viewed in a direction perpendicular to the longitudinal direction may change from an upwardly convex shape in the placing step to a downwardly convex shape.

[0012] According to the above method, in the adsorption process, the shape of the outermost plate material of the stack when viewed from a direction perpendicular to the longitudinal direction changes from an upward convex shape in the placement process to a downward convex shape, resulting in gaps being created between both longitudinal ends of the first plate material to be pulled up from the top of the stack and both longitudinal ends of the second plate material to be pulled up next from the top of the stack.

[0013] In the suction process, the timing at which one of both longitudinal ends of the outermost plate material is suctioned and pulled up may be different from the timing at which the other of both longitudinal ends of the outermost plate material is suctioned and pulled up.

[0014] According to the above method, in the adsorption step, the timing at which one of both ends in the length direction of the outermost plate of the stack is adsorbed and pulled up differs from the timing at which the other end is adsorbed and pulled up, so that a difference occurs in the time at which a gap is formed between both ends in the length direction of the first plate from the top of the stack to be pulled up and both ends in the length direction of the second plate from the top of the stack to be pulled up next. This causes an imbalance in the reduced pressure state between both ends in the length direction of the first plate from the top of the stack to be pulled up and the adjacent second plate from the top of the stack to be pulled up, so that the first plate from the top of the stack to be pulled up and the second plate from the top of the stack to be pulled up next can be more reliably separated. Effect of the Invention

[0015] According to the present invention, in the placing step, a spacer is placed between the placing surface and the laminate, and each plate material constituting the laminate is elastically deformed so that the longitudinal center of the laminate protrudes further than both ends, and in the suction step, both ends of the longitudinal center of the outermost plate material of the laminate are suctioned while pressing the longitudinal center, and the plate material is pulled up so that at least one of both longitudinal ends of the plate material is positioned higher than the longitudinal center, making it possible to remove breathable plate materials one by one at low cost. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 is a front view showing the first half of the adsorption process of the method for separating an air-permeable plate material according to the first embodiment of the present invention. [Diagram 2] 1 is a top view of an adsorption device used in an adsorption step of a method for separating an air-permeable plate material according to a first embodiment of the present invention. FIG. [Diagram 3] FIG. 4 is a top view of another adsorption device used in the adsorption step of the method for separating air-permeable plate material according to the first embodiment of the present invention. [Figure 4] FIG. 2 is a front view showing the latter half of the adsorption process of the method for separating an air-permeable plate material according to the first embodiment of the present invention. [Diagram 5]FIG. 11 is a front view showing the first half of the adsorption process of the method for separating an air-permeable plate material according to the second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the following embodiments.

[0018] First Embodiment 1 to 4 show a first embodiment of a method for separating breathable plate material according to the present invention. Here, FIG. 1 is a front view showing the first half of the adsorption process of the method for separating breathable plate material of this embodiment. Also, FIG. 2 is a top view of an adsorption device Ma used in the adsorption process of the method for separating breathable plate material of this embodiment. Also, FIG. 3 is a top view of another adsorption device Mb used in the adsorption process of the method for separating breathable plate material of this embodiment. Also, FIG. 4 is a front view showing the second half of the adsorption process of the method for separating breathable plate material of this embodiment.

[0019] First, the breathable plate material 10 separated by the breathable plate material separation method of this embodiment has breathability and has, for example, a thickness of about 9.2 mm × width of 908 mm × length of 1818 mm and a density of 0.70 g / cm 3 More than 0.85g / cm 3 The breathable board material 10 is made of MDF or the like. In addition to MDF, examples of the breathable board material 10 include particle board, volcanic glass laminate board, gypsum board, calcium silicate board, and the like.

[0020] In addition, the plate material separation device used in the breathable plate material separation method of this embodiment is equipped with an input section C into which a plurality of breathable plate materials 10 are brought in as a laminate L, an output section from which the breathable plate materials 10 are brought out one by one, and an adsorption conveying machine Ma which travels between the input section C and the output section, adsorbs and lifts up the breathable plate material 10 on the outermost surface of the laminate L brought in to the input section C, and then conveys it to the output section.

[0021] As shown in Figures 1 and 4, the loading section C is equipped with, for example, three rows of roller conveyors 20 arranged to extend parallel to each other, and the plane connecting the tops of the peripheral surfaces of each roller of the three rows of roller conveyors 20 forms the loading surface S.

[0022] The discharge section is, for example, a preparation table on which the breathable plate materials 10 are kept waiting one by one before being fed into a processing machine that performs processing such as cutting in the next process, and on which the breathable plate materials 10 are sent out one by one to the next process.

[0023] As shown in Figure 2, the suction conveying machine Ma includes a movable body D having a rectangular plate shape in a plan view, and a first suction pad Pa, a second suction pad Pb, and a third suction pad Pc provided on the underside of the movable body D.

[0024] The moving body D is provided so as to be capable of ascending and descending in the vertical direction, and is also provided so as to be capable of moving in the horizontal direction between the carry-in section and the carry-out section.

[0025] The first suction pad Pa, the second suction pad Pb, and the third suction pad Pc are connected to a decompression fan or the like, and are configured to come into contact with the surface of the breathable plate material 10 and adsorb the breathable plate material 10. Here, the first suction pad Pa and the second suction pad Pb are configured to adsorb both ends of the breathable plate material 10 in the length direction under reduced pressure, and the third suction pad Pc is configured to adsorb the central part of the breathable plate material 10 in the length direction under reduced pressure.

[0026] In this embodiment, an suction conveying machine Ma is exemplified, in which a first suction pad Pa, a second suction pad Pb, and a third suction pad Pc are provided on the underside of the movable body D, but the suction conveying machine Mb may also be used, in which a first suction pad Pa, a second suction pad Pb, and a pressure pad Pd are provided on the underside of the movable body D.

[0027] 3, the suction conveyor Mb includes a movable body D provided in the shape of a rectangular plate, and a first suction pad Pa, a second suction pad Pb, and a pressing pad Pd provided on the underside of the movable body D. Here, the first suction pad Pa and the second suction pad Pb are connected to a decompression fan or the like and decompress and adsorb both ends in the length direction of the breathable plate material 10, and the pressing pad Pd is configured to abut against the center part of the breathable plate material 10 in the length direction and press the center part of the breathable plate material 10 in the length direction.

[0028] Next, a method for separating air-permeable board materials according to this embodiment using the board material separating apparatus having the above-mentioned configuration will be described. The method for separating air-permeable board materials according to this embodiment includes a placing step and a suction step.

[0029] <Placement process> First, a wooden spacer 25a made of a rod-shaped member having a thickness of about 15 mm, a width (horizontal direction in FIG. 1) of about 100 mm, and a length (depth direction in FIG. 1) of about 1000 mm is placed on the central roller conveyor 20 of the three rows of roller conveyors 20 in the loading section C (see FIG. 1). The cross-sectional shape of the spacer 25a is, for example, a square, a rectangle, a triangle, a semicircle, etc., and is not particularly limited. The material of the spacer 25a is also not particularly limited.

[0030] Next, a stack L of about 100 breathable boards 10 (for example, MDF with a thickness of 9.2 mm, a width (depth direction in FIG. 1) of 908 mm, and a length (horizontal direction in FIG. 1) of 1,818 mm) is placed on the placement surface S of the three rows of roller conveyors 20 via spacers 25a. This causes each breathable board 10 of the stack L to elastically deform so that the center of the stack L in the length direction (horizontal direction in FIG. 1) protrudes more than both ends, as shown in FIG. 1. A base plate or the like may be placed at the bottom of the stack L to physically protect the bottom breathable substrate 10.

[0031] <Adsorption process> First, the movable body D of the suction conveying machine Ma is moved above the laminate L placed in the loading section C, and then the movable body D is lowered so that the first suction pad Pa, the second suction pad Pb and the third suction pad Pc of the suction conveying machine Ma are brought into contact with the surface of the breathable plate material 10 on the outermost surface of the laminate L, as shown in Figure 1.

[0032] Next, while the third suction pad Pc is sucking and holding down the center of the length of the breathable plate 10, the first suction pad Pa and the second suction pad Pb suck both ends of the breathable plate 10 in the length direction, and the breathable plate 10 is lifted up so that both ends of the breathable plate 10 in the length direction are positioned higher than the center, as shown in Fig. 4. At this time, the shape of the outermost breathable plate 10 viewed from a direction perpendicular to the length direction changes from an upward convex shape (see Fig. 1) in the above-mentioned placing step to a downward convex shape (see Fig. 4).

[0033] Furthermore, after the movable body D of the suction conveying machine Ma is moved to the discharge section, the reduced pressure suction by the first suction pad Pa, the second suction pad Pb and the third suction pad Pc is stopped, and the breathable plate material 10 is placed on the preparation table that constitutes the discharge section.

[0034] In this manner, the breathable plate materials 10 can be taken out one by one from the laminate L. In the present embodiment, the separation method in which both end portions in the length direction of the breathable plate material 10 are simultaneously pulled up by the first suction pad Pa and the second suction pad Pb in the suction step is exemplified, but the timing at which one of both end portions in the length direction of the breathable plate material 10 is sucked and pulled up by the first suction pad Pa and the timing at which the other end portion in the length direction of the breathable plate material 10 is sucked and pulled up by the second suction pad Pb may differ, and there may be a time difference between these timings of about 0.1 to 2.0 seconds.

[0035] As described above, according to the method for separating breathable plate materials of this embodiment, first, in the placing step, a spacer 25a made of a rod-shaped member is placed between the placement surface S on which the laminate L, in which a plurality of breathable plate materials 10 having breathability are placed, and the laminate L, in a portion overlapping with the center portion of the laminate L in the longitudinal direction in a plan view. This allows the laminate L to be placed on the placement surface S in a state in which each breathable plate material 10 is elastically deformed so that the center portion in the longitudinal direction protrudes more than both ends. Here, in a laminate in which generally smooth and heavy plate materials are stacked, the adjacent plate materials are in close contact with each other, so that the inside of the laminate is in a kind of reduced pressure state, and it is considered that it is difficult to separate the plate materials. Then, in the placing step, the breathable plate material 10 at the outermost surface of the laminate L in which each breathable plate material 10 has been elastically deformed is not subjected to a force pressing from above, so that a force that tries to return to the original flat shape is applied, and it is considered that the breathable plate material 10 at the outermost surface is in a state in which the reduced pressure state is easily eliminated. Furthermore, in the subsequent adsorption step, the breathable plate 10 is pulled up so that both ends of the breathable plate 10 in the length direction are located above the center while pressing the center of the length direction of the outermost breathable plate 10 in the laminate L in the state in which each breathable plate 10 has been elastically deformed in the placing step. Therefore, in the adsorption step, a gap is generated between both ends of the length direction of the first breathable plate 10 to be pulled up from the top of the laminate L and both ends of the length direction of the second breathable plate 10 to be pulled up next from the top of the laminate L, and air enters through the gap, eliminating the reduced pressure state, and the breathable plate 10 to be pulled up and the breathable plate 10 to be next pulled up are separated. As a result, the breathable plate 10 to be pulled up and the breathable plate 10 to be next pulled up are separated by simply placing a spacer 25a between the placing surface S and the laminate L, so that the breathable plate 10 having breathability can be taken out one by one at low cost.

[0036] Furthermore, according to the method for separating breathable plate material of this embodiment, in the adsorption process, the shape of the breathable plate material 10 on the outermost surface of the laminate L when viewed from a direction perpendicular to the longitudinal direction changes from an upward convex shape in the loading process to a downward convex shape, so that gaps are created between both longitudinal ends of the first breathable plate material 10 to be pulled up from the top of the laminate L and both longitudinal ends of the second breathable plate material 10 to be pulled up next from the top of the laminate L.

[0037] Furthermore, according to the method for separating breathable plate material of this embodiment, if, in the adsorption process, the timing at which one of both longitudinal ends of the breathable plate material 10 at the top of the laminate L is adsorbed and pulled up is different from the timing at which the other of both longitudinal ends of the breathable plate material 10 at the top of the laminate is adsorbed and pulled up, the balance of the reduced pressure state between the second adjacent breathable plate material 10 from the top will be lost at both longitudinal ends of the first breathable plate material 10 to be pulled up from the top of the laminate L, so that the first breathable plate material 10 to be pulled up from the top of the laminate L can be more reliably separated from the second breathable plate material 10 to be pulled up next.

[0038] Furthermore, according to the method for separating breathable plate material of this embodiment, in the adsorption process, the breathable plate material 10 on the outermost surface of the laminate L is adsorbed under reduced pressure, so that the breathable plate material 10 can be easily adsorbed by, for example, abutting the first suction pad Pa, the second suction pad Pb and the third suction pad Pc connected to a pressure reduction means such as a pressure reduction fan or a pressure reduction pump against the surface of the breathable plate material 10.

[0039] Furthermore, according to the method for separating breathable board materials of this embodiment, the breathable board material 10 is made of MDF, and because of its breathability, MDF, which has recently been used for roof sheathing and the like, can be pre-cut automatically in a factory or the like.

[0040] Second Embodiment Fig. 5 shows a second embodiment of the method for separating breathable plate material according to the present invention. Here, Fig. 5 is a front view showing the first half of the adsorption process of the method for separating breathable plate material of this embodiment, and corresponds to Fig. 1 described in the first embodiment. In the following embodiments, the same parts as those in Figs. 1 to 4 are given the same reference numerals, and detailed description thereof will be omitted.

[0041] In the above first embodiment, a method for separating breathable board material using a spacer 25a made of a rod-shaped member was exemplified, whereas in this embodiment, a method for separating breathable board material using a spacer 25b made of a planar member is exemplified.

[0042] The plate material separating device used in the method for separating breathable plate materials of this embodiment includes, as in the first embodiment, an input section C into which a plurality of breathable plate materials 10 are input as a laminate L, an output section into which the breathable plate materials 10 are output one by one, and an adsorption conveying machine Ma that moves between the input section C and the output section, adsorbs and lifts the breathable plate material 10 on the outermost surface of the laminate L input to the input section C, and then conveys it to the output section. Here, as shown in FIG. 5, the input section C of this embodiment includes, for example, a mounting table 20b that is rectangular in plan view, and the surface of the mounting table 20b is the mounting surface S. In this embodiment, the adsorption conveying machine Ma is illustrated, but it may be an adsorption conveying machine Mb as in the first embodiment.

[0043] Next, a method for separating air-permeable board materials according to this embodiment using the board material separating apparatus having the above-mentioned configuration will be described. The method for separating air-permeable board materials according to this embodiment includes a placing step and a suction step.

[0044] <Placement process> First, a spacer 25b such as an iron ball made of a spherical curved member having a diameter of about 15 mm is placed on the placement table 20b of the loading section C (see FIG. 5). Here, the spacer 25b is placed at each center portion in the length direction and width direction of the laminate L to be placed later, that is, at a portion overlapping with the center portion of the laminate L in a plan view. Note that, although a spherical spacer 25b is exemplified in this embodiment, the spacer 25b may be configured to support the laminate L from the back surface in a point-like manner, and may be, for example, a hemisphere, etc., as long as the shape is upwardly convex, and is not particularly limited. The material of the spacer 25b is also not particularly limited.

[0045] Next, a laminate L of about 100 breathable boards 10 (for example, MDF with a thickness of 9.2 mm, a width (depth direction in FIG. 5) of 908 mm, and a length (horizontal direction in FIG. 5) of 1818 mm) is placed on the mounting surface S of the mounting table 20b via spacers 25b. As a result, as shown in FIG. 5, the laminate L has its center protruding from both ends in its length direction (horizontal direction in FIG. 5) and width direction (depth direction in FIG. 5), that is, each breathable board 10 is elastically deformed so that the center in a plan view protrudes from its peripheral ends. Note that a floor plate or the like may be placed at the bottom of the laminate L to physically protect the bottom breathable substrate 10.

[0046] <Adsorption process> First, the movable body D of the suction conveying machine Ma is moved above the laminate L placed in the loading section C, and then the movable body D is lowered to bring the first suction pad Pa, the second suction pad Pb and the third suction pad Pc of the suction conveying machine Ma into contact with the surface of the outermost breathable plate material 10 of the laminate L, as shown in Figure 5.

[0047] Next, while the third suction pad Pc is sucking and holding down the center of the length of the breathable plate 10, the first suction pad Pa and the second suction pad Pb suck both ends of the breathable plate 10 in the length direction, and the breathable plate 10 is lifted up so that both ends of the breathable plate 10 in the length direction are positioned higher than the center (see FIG. 4). At this time, the shape of the outermost breathable plate 10 viewed from a direction perpendicular to the length direction changes from an upward convex shape (see FIG. 5) in the above-mentioned placing step to a downward convex shape (see FIG. 4).

[0048] Furthermore, after the movable body D of the suction conveying machine Ma is moved to the discharge section, the reduced pressure suction by the first suction pad Pa, the second suction pad Pb and the third suction pad Pc is stopped, and the breathable plate material 10 is placed on the preparation table that constitutes the discharge section.

[0049] In this manner, the breathable plate materials 10 can be taken out one by one from the laminate L. In this embodiment, as in the first embodiment, a separation method in which both end portions in the length direction of the breathable plate material 10 are simultaneously pulled up by the first suction pad Pa and the second suction pad Pb in the suction step is exemplified, but the timing at which one of both end portions in the length direction of the breathable plate material 10 is sucked and pulled up by the first suction pad Pa differs from the timing at which the other end portion in the length direction of the breathable plate material 10 is sucked and pulled up by the second suction pad Pb, and there may be a time difference between these timings of about 0.1 to 2.0 seconds.

[0050] As described above, according to the method for separating breathable plate materials of this embodiment, first, in the placing step, the spacers 25b, which are upwardly convex, are placed between the placement surface S on which the laminate L, which is made of a plurality of breathable plate materials 10 having breathability, is placed, and between the laminate L and the placement surface S, which overlaps with each central portion (the central portion in the plan view of the laminate L) in the length direction and width direction of the laminate L, so as to support the laminate L in a point-like manner from the back surface. This allows the laminate L to be placed on the placement surface S in a state in which each breathable plate material 10 is elastically deformed so that its central portion protrudes more than both ends in the length direction and width direction. Here, in a laminate in which generally smooth and heavy plate materials are stacked, the adjacent plate materials are in close contact with each other, and the inside of the laminate is in a kind of reduced pressure state, so it is considered that it is difficult to separate the plate materials. In the placing step, the outermost breathable plate 10 of the laminate L in which each breathable plate 10 has been elastically deformed is not pressed from above, so that a force acts on the outermost breathable plate 10 to return it to its original flat shape, and the outermost breathable plate 10 is in a state in which the reduced pressure state is easily eliminated. Furthermore, in the subsequent adsorption step, the breathable plate 10 is pulled up so that both ends of the breathable plate 10 in the length direction are positioned above the center while the central portion of the breathable plate 10 in the length direction of the outermost breathable plate 10 in the laminate L in which each breathable plate 10 has been elastically deformed in the placing step is pressed. Therefore, in the adsorption step, a gap is generated between both ends of the first breathable plate 10 to be pulled up from the top of the laminate L and both ends of the second breathable plate 10 to be pulled up next from the top of the laminate L, and air enters through the gap, thereby eliminating the reduced pressure state, and the breathable plate 10 being pulled up and the breathable plate 10 to be pulled up next are separated. As a result, simply by placing a spacer 25a between the mounting surface S and the laminate L, the breathable plate material 10 being pulled up and the next breathable plate material 10 to be pulled up are separated, making it possible to take out the breathable plate materials 10 one by one at low cost.In addition, in the method for separating breathable board materials in this embodiment, the reduced pressure state is eliminated as air enters through the gaps on all four sides in the length and width directions, so that the breathable board material 10 being pulled up and the breathable board material 10 to be pulled up next can be separated more easily and reliably than in the method for separating breathable board materials in the first embodiment described above, in which air enters through gaps on only two sides in the length direction.

[0051] Furthermore, according to the method for separating breathable plate material of this embodiment, in the adsorption process, the shape of the breathable plate material 10 on the outermost surface of the laminate L when viewed from a direction perpendicular to the longitudinal direction changes from an upward convex shape in the loading process to a downward convex shape, so that gaps are created between both longitudinal ends of the first breathable plate material 10 to be pulled up from the top of the laminate L and both longitudinal ends of the second breathable plate material 10 to be pulled up next from the top of the laminate L.

[0052] Furthermore, according to the method for separating breathable plate material of this embodiment, if, in the adsorption process, the timing at which one of both longitudinal ends of the breathable plate material 10 at the top of the laminate L is adsorbed and pulled up is different from the timing at which the other of both longitudinal ends of the breathable plate material 10 at the top of the laminate is adsorbed and pulled up, the balance of the reduced pressure state between the second adjacent breathable plate material 10 from the top will be lost at both longitudinal ends of the first breathable plate material 10 to be pulled up from the top of the laminate L, so that the first breathable plate material 10 to be pulled up from the top of the laminate L can be more reliably separated from the second breathable plate material 10 to be pulled up next.

[0053] Furthermore, according to the method for separating breathable plate material of this embodiment, in the adsorption process, the breathable plate material 10 on the outermost surface of the laminate L is adsorbed under reduced pressure, so that the breathable plate material 10 can be easily adsorbed by, for example, abutting the first suction pad Pa, the second suction pad Pb and the third suction pad Pc connected to a pressure reduction means such as a pressure reduction fan or a pressure reduction pump against the surface of the breathable plate material 10.

[0054] Furthermore, according to the method for separating breathable board materials of this embodiment, the breathable board material 10 is made of MDF, and because of its breathability, MDF, which has recently been used for roof sheathing and the like, can be pre-cut automatically in a factory or the like.

[0055] Other Embodiments In the above first and second embodiments, a method for separating breathable board material that is rectangular in plan view has been exemplified, but the present invention can also be applied to a method for separating breathable board material that has shapes other than rectangular in plan view.

[0056] In addition, in the above first and second embodiments, a method for separating MDF was specifically exemplified as a method for separating breathable board materials, but as described above, the present invention can also be applied to methods for separating breathable board materials such as particle board, volcanic vitreous laminated board (for example, product name "Dailite (registered trademark)" manufactured by Daiken Corporation), gypsum board, calcium silicate board, etc. [Industrial Applicability]

[0057] INDUSTRIAL APPLICABILITY As described above, the present invention is extremely useful since it enables breathable plate materials to be taken out one by one at low cost. [Explanation of symbols]

[0058] L laminate S Placement surface 10. Breathable board material 25a, 25b spacer

Claims

1. a placing step of placing a laminate in which a plurality of breathable plate materials are laminated on a placing surface; and a suction step of suctioning and lifting the outermost plate material of the laminate, In the placing step, a spacer is placed between the placing surface and the laminate, and each plate material constituting the laminate is elastically deformed so that a central portion of the laminate in a longitudinal direction protrudes beyond both ends of the laminate in a longitudinal direction; The method for separating breathable plate material is characterized in that in the adsorption process, both ends of the outermost plate material in the longitudinal direction are adsorbed while holding the longitudinal center of the outermost plate material, and the plate material is lifted up so that at least one of the longitudinal ends of the plate material is positioned higher than the longitudinal center of the plate material.

2. The method for separating an air-permeable board material according to claim 1, A method for separating breathable board materials, wherein the spacer is a rod-shaped member.

3. The method for separating an air-permeable board material according to claim 1, A method for separating breathable plate materials, characterized in that the spacers are configured to support the laminate in a point-like manner from its back surface.

4. In the method for separating an air-permeable plate material according to any one of claims 1 to 3, A method for separating breathable plate materials, characterized in that in the adsorption step, the shape of the outermost plate material as viewed in a direction perpendicular to the longitudinal direction thereof changes from an upwardly convex shape as in the placing step to a downwardly convex shape.

5. In the method for separating an air-permeable plate material according to any one of claims 1 to 3, This method for separating breathable plate material is characterized in that in the adsorption process, the timing at which one of both longitudinal ends of the outermost plate material is adsorbed and lifted is different from the timing at which the other of both longitudinal ends of the outermost plate material is adsorbed and lifted.

6. In the method for separating an air-permeable plate material according to any one of claims 1 to 3, The method for separating air-permeable board materials is characterized in that in the adsorption step, the outermost board material is adsorbed under reduced pressure.

7. In the method for separating an air-permeable plate material according to any one of claims 1 to 3, A method for separating air-permeable board materials, wherein the board material is a medium density fiberboard.

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