JP2009052211A - End bending device for sandwich panel face material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an end bending device for accurately forming a bent portion in which an end frame is fixed to ends of a pair of face materials, in the process of manufacturing a sandwich panel by cutting a sandwich structure having a foamed material infilled between the pair of face materials facing each other, so as to mount the end frame on the cut surface of the sandwich structure. <P>SOLUTION: This end bending device 104 forms the bent portions 11, undergoing the fixation of the end frame 4, at the ends of the pair of face materials 2, in which a part or the whole of the end surface of the foamed material 3 forming the cut surface 7 is removed. The end bending device 104 comprises an inner surface supporting portion 72 which is inserted into a space 8 of the pair of face materials 2 and which abuts on the inner surface side of the pair of face materials 2 so as to receive a force acting in bending working, and a bending action portion 73 which acts from the outer surface side of the face material 2 so as to form the bent portion 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  In the process of manufacturing a prefabricated sandwich panel mainly by cutting a sandwich structure filled with a foam material between a pair of facing materials facing each other and attaching an end frame to the cutting surface, The present invention relates to an end bending apparatus that bends end portions of a pair of face members.

  A technique for forming various structures such as a large refrigerator or a clean room using a sandwich panel in which a foam material is filled between a pair of facing materials facing each other is known. Here, as a sandwich panel production method, a continuous production method in which a pair of face materials are supplied on a continuous production line and a foaming stock solution is injected between the face materials and a face material that has been cut in advance are used. There is known a discontinuous production method (batch production method) in which a plurality of layers are laminated and a foaming stock solution is injected between each face material.

  When producing a sandwich panel by the discontinuous production method, the four ends of the face material that has been cut in advance are folded, and the foaming stock solution is injected into the space surrounded by the bent portions and foamed. Thus, an end frame made up of the end portions of the face material can be formed on each end surface of the sandwich panel to be produced. Thus, according to the discontinuous production method, a sandwich panel in which end frames are formed on each end face can be easily produced.

  The sandwich panel having the end frame can be formed with a fitting portion made of unevenness on the end frame. If a plurality of such sandwich panels are prepared, the end faces of the sandwich panels are opposed to each other, and the fitting portions are fitted together, a structure can be easily formed by a so-called prefabricated method. That is, the discontinuous production method is suitable for producing sandwich panels used in the prefabricated method.

  However, in the sandwich panel produced by the discontinuous production method, the gas generated when the foaming stock solution is foamed is sandwiched between the foamed foam material and the face material after foaming, so-called voids ( Gas accumulation) may occur. When a void is generated, the face material may be undulated at a portion facing the void. In this case, there is a problem that the smoothness of the surface of the sandwich panel is lowered and the appearance is deteriorated. Further, the discontinuous production method has a problem that a long sandwich panel cannot be easily obtained.

  On the other hand, the sandwich panel produced by the continuous production method has the advantages that the generation of voids is suppressed, so that the surface is smooth and the appearance is good. Further, according to the continuous production method, there is an advantage that a long sandwich panel can be easily obtained and the manufacturing cost of the sandwich panel can be reduced. The following Patent Document 1 shows an example of a sandwich panel produced by a continuous production method.

JP-A-8-57720

  However, since a sandwich panel produced by a continuous production method is obtained by cutting a sandwich structure formed continuously at an arbitrary position, each of the end faces of a pair of face materials, and these The end surface of the foam material filled between the face materials is in a state located in the same plane. In this state, because the foam material is adjacent to the end of each face material in the cut surface of the sandwich panel, the end cannot be folded, like a sandwich panel produced by a discontinuous production method, An end frame cannot be formed by bending the end of the face material. Therefore, in the conventional continuous production method, there is a problem that a sandwich panel suitable for the prefabrication method cannot be easily produced.

  Therefore, a method of attaching an end frame to the cut surface of the sandwich panel produced by the continuous production method can be considered in a subsequent process. In this case, the strength is weak in the method of attaching the end frame to the cut surface by bonding or the like, and it is necessary to perform some processing for attaching the end frame to the pair of face materials forming the cut surface. is there.

  Patent Document 1 discloses a bending machine as a bending means for bending an end portion of each face material on a cut surface of a sandwich panel produced by a continuous production method. In this bending machine, the front end portion of the panel body is pressed and held by the lowered clamper, and the pressing tool is lowered to bend the side end piece of the upper metal shell (face material). Holds the bending position of the lower metal shell (face material), and the cylinder of the bender extends to bend the bent piece at the hinge to bend the lower metal shell. However, even when such a bending machine is used, it is difficult to form the end frame by bending the end portion of the face material. In addition, the bending process by this bending machine is not for attaching the end frame to the metal skin, but when the upper metal skin is folded, the outer surface side of the metal skin is only pressed by the clamper, Since there is no holding, there is a possibility that the bending process cannot be performed accurately.

  The present invention has been made in view of the above circumstances, and sandwiched by cutting a sandwich structure filled with a foam material between a pair of facing members facing each other and attaching an end frame to the cut surface. In the process of manufacturing a panel, the bent part to which the end frame is fixed is accurately set against the end part of the pair of face members from which part or all of the end face of the foam material forming the cut surface is removed. It is an object of the present invention to provide an end bending device for forming the device.

In order to solve the above problems, an end bending apparatus according to the present invention is provided.
In the step of manufacturing a sandwich panel by cutting a sandwich structure in which a foam material is filled between a pair of facing materials facing each other and attaching an end frame to the cutting surface, the cutting surface is formed. An end bending device for forming a bent portion to which the end frame is fixed with respect to the end portions of the pair of face materials from which part or all of the end surfaces of the foam material are removed. ,
An inner surface support portion that is inserted into the inner space of the pair of face materials and receives the force acting during bending by contacting the inner surface side of the pair of face materials;
And a bending action part that acts from the outer surface side of the face material and forms the bent part.

  The operation and effect of the end bending apparatus having this configuration will be described. An end bending apparatus according to the present invention cuts a sandwich structure filled with a foam material between a pair of facing members produced by a continuous production method, and attaches an end frame to the cut surface. By using a sandwich panel in the process. In the cut surface obtained by cutting the sandwich structure formed continuously at an arbitrary position, each end surface of the pair of face materials and the end face of the foam material filled between these face materials are in the same plane. It will be in the position. In this state, since the foamed material is adjacent to the end of each face material on the cut surface of the sandwich panel, the end cannot be bent. Therefore, a part or the whole of the end face of the foam material forming the cut surface is removed, and the end part of the pair of face materials from which the foam material has been removed is formed by the end part bending device. And it becomes possible to attach an end part frame firmly to a cut surface by comprising so that an end part frame may be fixed to this bent part.

  The end bending apparatus of the present invention includes an inner surface support portion, and the inner surface support portion removes a part or all of the inner space of the pair of face materials, that is, the end surface of the foam material forming the cut surface. Then, it is inserted into the space formed between the pair of face members, and comes into contact with the inner surface side of the pair of face members. Further, the end bending device includes a bending action part, and the bending action part acts from the outer surface side of the face material to form a bending part. At this time, since the inner surface support portion abuts against the inner surface side of the face material and receives the force acting during the bending process, the bent portion can be formed accurately.

  In the end bending apparatus of the present invention, it is preferable that the bent portion is formed by bending an end portion of the face material inward.

  The bent portions are formed by bending the end portions of the face materials inward, that is, the ends of a pair of face materials facing each other in the direction of the face materials. By fixing the end frame to the bent portion thus formed, the end frame can be firmly attached to the cut surface. Further, by providing the bent portion by bending it inward of the face material, the joint between the end of the face material and the end frame is not noticeable.

  In the end bending apparatus according to the present invention, it is preferable that the end portion of the face material is bent 90 ° toward the inward side.

  Since the end portion of the face material is bent by 90 °, the bending process is easy, and at the same time, the strength when the end frame is attached is high. That is, if the end of the face material is bent at an acute angle, it is difficult to process, and if the end of the face material is bent at an obtuse angle, the end frame is detached in the opposite direction to the face material when the end frame is attached. It becomes easy.

In the end bending apparatus of the present invention, the device further comprises an outer surface support portion that contacts the outer surface side of the face material and receives a force acting during bending processing,
The outer surface support part has a guide function of the bending action part,
It is preferable that the bending action portion is configured to come into contact with an end surface forming a cut surface of the face material when inserted into the inner space, and an insertion position is determined.

  The end bending device further includes an outer surface support portion in addition to the inner surface support portion and the bending action portion. The outer surface support portion abuts on the outer surface side of the face material and receives a force acting during bending. When the bending action part acts from the outer surface side of the face material and forms the bending part, the inner surface support part and the outer surface support part are in contact with the inner surface side and the outer surface side of the face material, respectively, and exert a force acting during the bending process. Since it receives, a bending part can be formed correctly. Further, the outer surface support portion has a guide function of the bending action portion, and can be reliably bent. Further, when the end bending device is inserted into the inner space of the pair of face members, the bending action part abuts on the end surface forming the cut surface of the face member, and the end bending device Since the insertion position is determined, a bent portion having the same shape can be formed for each sandwich panel.

  In the end bending apparatus of the present invention, it is preferable that the bent portion has a stepped surface formed in parallel to the outer surface of the face material and on the inner side of the face material.

  The bent portion has a step surface formed parallel to the outer surface of the face material and on the inner side of the face material, and the end frame is fixed to the bent portion so that the end frame is attached to the cut surface. Can be firmly attached. By using this step surface, it is possible to easily configure a fixing mechanism (screw, rivet, etc.) with the end frame, and the fixing mechanism is in a space formed by a step surface on the inner side of the outer surface of the face material. Since it is accommodated, it does not protrude from the outer surface of the face material.

The end bending device of the present invention further includes a face material receiving portion that is adjacent to the inner surface support portion and is disposed on the inner side of the face material from the inner surface support portion and has a surface parallel to the outer surface,
It is preferable that the face material receiving portion receives the bending action portion acting from the outer surface side of the face material to form the stepped surface.

  The end bending device further includes a face material receiving portion in addition to the inner surface support portion and the bending action portion. The face material receiving portion is adjacent to the inner surface support portion, is disposed on the inner side of the face material from the inner surface support portion, has a surface parallel to the outer surface, and acts from the outer surface side of the face material. Receive. As a result, the face material is bent along the inner surface support portion and the face material receiving portion which is adjacent to the inner surface support portion and is disposed on the inner side and has a surface parallel to the outer surface. It is possible to form a bent portion having

<First Embodiment>
FIG. 1 is a perspective view showing an example of a sandwich panel 1 manufactured using an end bending apparatus according to the first embodiment of the present invention. FIG. 2 is a partial cross-sectional view of the sandwich panel 1 of FIG. 1 and shows a cross section of the sandwich panel 1 cut in the thickness direction. In the following description, the upper side in FIG. 1 will be described as the upper side, the lower side as the lower side, the left back side as the left side, and the right front side as the right side.

  The sandwich panel 1 is a substantially rectangular plate-like member that is long in the vertical direction, and includes a pair of face materials 2 facing each other in parallel and a foam material 3 filled between these face materials 2. I have. Each face material 2 has a thickness of 0.3 to 1.0 mm, and can be formed of various thin plates such as an aluminum thin plate, a steel plate, a resin plate, and a wooden plywood. On the other hand, the foam material 3 is made of a foamed resin formed by foaming a resin foam stock solution such as a polyurethane foam stock solution, and functions as a heat insulating material.

  The sandwich panel 1 is manufactured by a so-called continuous production method. Specifically, on the continuous production line, a pair of face materials 2 each consisting of one long thin plate are continuously sent out so as to face each other in parallel, and the foaming stock solution is placed between these face materials 2. By being injected, one sandwich structure in which the foam material 3 is filled between the pair of face materials 2 is continuously formed. The sandwich structure formed in this manner is cut to a desired length on a continuous production line, whereby sandwich panels 1 having a substantially rectangular shape as shown in FIG. 1 are manufactured one after another.

  The upper end portion and the lower end portion of the sandwich panel 1 are cut end portions formed by cutting the sandwich structure as described above, and the upper end portion and the lower end portion are respectively provided with the cut end frame 4 ( Equivalent to the end frame). On the other hand, side end frames 5 are respectively attached to the left and right side end portions of the sandwich panel 1 during continuous production. As described above, the end frame such as the cut end frame 4 and the side end frame 5 is attached to each end of the sandwich panel 1, so that the foam material 3 is sealed inside the sandwich panel 1. It has become. The cut end frame 4 and the side end frame 5 are each a flexible member formed of a resin material such as vinyl chloride.

  In this example, the cut end frame 4 attached to the upper end of the sandwich panel 1 is formed in a concave shape having a recess 20 that is recessed inward of the sandwich panel 1. The attached cut end frame 4 is formed in a convex shape having a convex portion 30 protruding outward of the sandwich panel 1. Further, the side end frame 5 attached to the left end of the sandwich panel 1 is formed in a concave shape having a recess 40 that is recessed inward of the sandwich panel 1, and is formed on the right end of the sandwich panel 1. The attached side end portion frame 5 is formed in a convex shape having a convex portion 50 protruding outward of the sandwich panel 1.

  Each concave portion 20, 40 has the same cross-sectional shape, and each convex portion 30, 50 has a cross-sectional shape corresponding to each concave portion 20, 40. Therefore, the end faces of the plurality of sandwich panels 1 are opposed to each other, and the corresponding recesses 20 and 40 and the projections 30 and 50 are fitted together to assemble the plurality of sandwich panels 1 by a so-called prefabricated method, so that a large refrigerator or clean room is assembled. Such various structures can be easily formed.

  FIG. 3 is a perspective view showing an example of the cut end frame 4 attached to the upper end portion of the sandwich panel 1 of FIG. The cut end frame 4 is an integrally molded product having an elongated shape in the left-right direction, and includes a frame body 21 bent so as to form a substantially trapezoidal recess 20 that is recessed downward from the left end to the right end. ing.

  On each upper end edge of the frame main body 21, an outer piece 23 extending in the horizontal direction toward the outer side, that is, the side opposite to the concave portion 20 side is formed. In addition, on the outer surface of the frame main body 21, inner pieces 24 that extend in the horizontal direction toward the outer side are formed so as to face the outer pieces 23 in parallel downwardly with a predetermined interval. The outer piece 23 and the inner piece 24 respectively extend in the crossing direction, more specifically in the orthogonal direction with respect to the lower side, which is the direction in which the recess 20 is recessed. The outer piece 23 and the inner piece 24 facing each other have an attachment portion for attaching the cut end frame 4 to the face material 2 by accommodating the end of the face material 2 in a space formed therebetween. 25 is formed.

  A bent piece 26 is formed at the tip of each inner piece 24 and is bent downward at a substantially right angle. A substantially L-shaped ridge 27 is formed on the outer bottom surface of the frame main body 21, and the foaming stock solution is injected through a reservoir 28 formed by the outer surface of the frame main body 21 facing the ridge 27. Be able to.

  FIG. 4 is a cross-sectional view showing an aspect when the cut end frame 4 of FIG. 3 is attached to the upper end portion of the sandwich panel 1. As shown in FIG. 4, when the cut end frame 4 of FIG. 3 is attached to the upper end of the sandwich panel 1, the sandwich panel 1 is transported on the continuous production line so that each face material 2 extends in the horizontal direction. The cut end frame 4 shown in FIG. 3 is attached to the sandwich panel 1 in a state in which the cut end frame 4 is rotated by 90 ° so that the bottom surface of the reservoir portion 28 is positioned below.

  When the cut end frame 4 is attached to the upper end of the sandwich panel 1, first, the sandwich panel 1 in which the foam material 3 is filled between a pair of face materials 2 as shown in FIG. Then, a process of removing the upper end surface of the foamed material 3 forming the cut surface 7 with a grinder or the like is performed. As a result, as shown in FIG. 4B, the foam material 3 adjacent to the upper ends of the pair of face members 2 forming the cut surface 7 is removed, and a space 8 is formed between the upper ends. The On the inner surface 9 of the foamed material 3 formed by removing the upper end surface, a concave portion 10 is formed at the center. That is, the inner surface 9 of the foam material 3 is formed in a shape having undulations.

  Thereafter, the upper end portion of each face material 2 forming the cut surface 7 is bent inward, that is, the space 8 side by an end bending device, which will be described in detail later. Is formed. The cut end frame 4 is attached to the face material 2 so that these bent portions 11 enter between the outer piece 23 and the inner piece 24. As a result, as shown in FIG. 4C, the cut end frame 4 is disposed so as to face the inner surface 9 of the foam material 3 with the space 8 therebetween, and the upper end portion of the sandwich panel 1 is the cut end portion. The state is covered with the frame 4. At this time, the bent piece 26 formed on each inner piece 24 of the cut end frame 4 is in contact with the inner surface of each face member 2.

  When the cut end frame 4 is attached to the face material 2, the foaming stock solution 12 </ b> A is injected into the reservoir portion 28 with the bottom surface of the reservoir portion 28 positioned below, and the foaming stock solution 12 </ b> A accumulates in the reservoir portion 28. In this state, the cut end frame 4 is attached to the face material 2 as shown in FIG. Thereafter, the foaming stock solution 12A in the reservoir portion 28 is foamed, so that the foam material 12 is formed in the entire space 8 between the cut end frame 4 and the inner surface 9 of the foam material 3 as shown in FIG. Filled. However, it is also possible to omit the reservoir 28 and inject the foaming stock solution 12A into the space 8 from one end side of the cut end frame 4 after the cut end frame 4 is attached to the face material 2.

  FIG. 5 is a perspective view showing an example of a cut end frame 4 attached to the lower end of the sandwich panel 1 of FIG. The cut end frame 4 is an integrally molded product having an elongated shape in the left-right direction, and a frame body 31 bent so as to form a substantially trapezoidal convex portion 30 protruding downward from the left end portion to the right end portion. I have.

  An inner piece 33 extending in the horizontal direction toward the outer side, that is, the side opposite to the convex portion 30 side, is formed at each upper end edge of the frame body 31. Further, on the outer surface of the frame body 31, outer pieces 34 that extend in the horizontal direction toward the outer side are formed so as to face the inner pieces 33 downward and in parallel with a predetermined distance. The inner piece 33 and the outer piece 34 extend in the intersecting direction, more specifically in the orthogonal direction, with respect to the lower side, which is the direction in which the convex portion 30 projects. The inner piece 33 and the outer piece 34 opposed to each other receive an end portion of the face material 2 in a space formed therebetween, and thereby an attachment portion for attaching the cut end frame 4 to the face material 2. 35 is formed.

  A bent piece 36 is formed at the tip of each inner piece 33 and is bent at a substantially right angle upward. One upper end edge of the frame body 31 is formed with a flange 37 extending in the horizontal direction toward the opposite upper edge, and through a pool portion 38 formed by the inner surface of the frame body 31 facing the flange 37. The foaming stock solution can be injected.

  FIG. 6 is a cross-sectional view showing an aspect when the cut end frame 4 of FIG. 5 is attached to the lower end portion of the sandwich panel 1. As shown in FIG. 6, when the cut end frame 4 of FIG. 5 is attached to the lower end portion of the sandwich panel 1, the sandwich panel 1 is transported on the continuous production line so that each face material 2 extends in the horizontal direction. The cut end frame 4 shown in FIG. 5 is attached to the sandwich panel 1 in a state where the cut end frame 4 is rotated by 90 ° so that the bottom surface of the reservoir portion 38 is located below.

  When the cut end frame 4 is attached to the lower end of the sandwich panel 1, first, the sandwich panel 1 in which the foam material 3 is filled between a pair of face materials 2 as shown in FIG. Then, a process of removing the lower end surface of the foamed material 3 forming the cut surface 7 with a grinder or the like is performed. As a result, as shown in FIG. 6B, the foam material 3 adjacent to the lower ends of the pair of face members 2 forming the cut surface 7 is removed, and a space 8 is formed between the lower ends. The Unlike the example of FIG. 4, the inner surface 9 of the foam material 3 formed by removing the lower end surface is a flat surface.

  After that, the lower end portion of each face material 2 forming the cut surface 7 is bent inward, that is, the space 8 side by an end bending device, which will be described in detail later, thereby a pair of bent portions 11. Is formed. The cut end frame 4 is attached to the face material 2 so that these bent portions 11 enter between the inner piece 33 and the outer piece 34. Thereby, as shown in FIG. 6C, the cut end frame 4 is disposed so as to face the inner surface 9 of the foam material 3 with the space 8 therebetween, and the lower end portion of the sandwich panel 1 is the cut end portion. The state is covered with the frame 4. At this time, the bent piece 36 formed on each inner piece 33 of the cut end frame 4 is in contact with the inner surface of each face member 2.

  When the cut end frame 4 is attached to the face material 2, the foaming stock solution 12 A is injected into the reservoir 38 with the bottom surface of the reservoir 38 positioned below, and the foaming stock solution 12 A is stored in the reservoir 38. In this state, the cut end frame 4 is attached to the face material 2 as shown in FIG. Thereafter, the foaming stock solution 12A in the reservoir 38 is foamed, so that the foaming material 12 is formed in the entire space 8 between the cut end frame 4 and the inner surface 9 of the foaming material 3 as shown in FIG. Filled. However, the reservoir 38 may be omitted, and the foaming stock solution 12A may be injected into the space 8 from one end side of the cut end frame 4 after the cut end frame 4 is attached to the face material 2.

  The cut end frame 4 shown in FIGS. 3 and 5 includes the substantially trapezoidal concave portion 20 or the convex portion 30, but is not limited to such a configuration, and is substantially square, substantially rectangular, or substantially triangular. It is possible to form the recessed part or convex part which consists of various shapes in the cutting | disconnection edge part flame | frame 4. In addition, the reservoirs 28 and 38 are not limited to the configuration formed by the substantially L-shaped ridges 27 or the linear ridges 37, and the reservoirs may be formed by ridges having other shapes.

  The foam material 12 shown in FIGS. 4 and 6 may be the same material as the foam material 3 filled in advance between the pair of face materials 2 or may be a different material. Further, as shown in FIGS. 4 and 6, the configuration is not limited to the configuration in which the entire end surface of the foam material 3 is removed when the cut end frame 4 is attached, and only a part of the end surface of the foam material 3 is removed. It may be a configuration.

  FIG. 7 is a conceptual diagram showing a manufacturing process of the sandwich structure 13 by a continuous production method. On the continuous production line for producing the sandwich structure 13 by the continuous production method, along the direction in which the pair of face materials 2 are conveyed, a roll forming device 501, a side end frame mounting device 502, and a foam material filling device. 503 and the conveyor 504 are installed in this order. The pair of face materials 2 are each provided as a roll R by being wound, and the face material 2 is drawn out continuously from these rolls R. The pair of face materials 2 are conveyed from the roll R to the conveyor 504 so that the distance between them is gradually shortened.

  In the sandwich structure 13 manufactured on the continuous production line, side end frames 5 are respectively attached to the left and right end portions of the pair of face materials 2 and the foaming stock solution is injected between the pair of face materials 2. As a result, the foamed material 3 is filled in the space surrounded by the pair of face materials 2 and the side end frames 5. As the shape of the side end frame 5, a concave shape as shown in FIG. 3 or a shape similar to the convex shape as shown in FIG. 5 can be adopted.

  The roll forming apparatus 501 is an apparatus for bending the left and right end portions of each face material 2 being conveyed. The side end frame 5 is attached to the left and right ends of each face material 2 bent by the roll forming device 501 by the side end frame attaching device 502. The side end frame 5 made of a flexible member is prepared in a wound state, and the side end frame 5 is interposed between the left and right side end portions of the face materials 2 whose intervals are gradually shortened with conveyance. As shown in FIGS. 4C and 6C, the side end frame 5 is attached in a manner as shown in FIGS. However, the side end frame 5 may not be wound depending on the convex shape or the concave shape. In this case, the side end frame 5 is supplied as a fixed-size bar material that is not wound but is cut long.

  Here, when the side end frame 5 is attached to the pair of face members 2, the side end frame 5 is attached to the left and right end portions of the lower face member 2, and then on the face member 2. While the foaming stock solution is injected by the foam material filling device 503, the upper face material 2 approaches the lower face material 2, and the side end frame 5 is sandwiched between the pair of face materials 2. Thereafter, the pair of face materials 2 are transported between a pair of conveyors 504 arranged in parallel to each other. These conveyors 504 are disposed in a foaming chamber 505 for foaming the foaming stock solution injected between the pair of face materials 2, and are transported by the conveyor 504 between the pair of face materials 2. The foaming stock solution is foamed, and the foamed material 3 is filled in the space surrounded by the pair of face materials 2 and the side end frames 5 and hardened.

  FIG. 8 is a conceptual diagram showing a process of manufacturing the sandwich panel 1 of FIG. 1 from the sandwich structure 13. FIG. 9 is a flowchart showing a process for manufacturing the sandwich panel 1 of FIG. 1 from the sandwich structure 13. The sandwich panel 1 of FIG. 1 is formed by cutting a single long sandwich structure 13 sent on a continuous production line at an arbitrary length and attaching a cut end frame 4 to the cut surface. .

  The continuous production line in this example includes a first production line extending along the conveying direction of the sandwich structure 13 and a second production line extending in a direction orthogonal to the first production line following the first production line. Become. That is, the sandwich panel 1 in FIG. 1 is manufactured by performing various processes in the process of being transported through the first production line and the second production line that are orthogonal to each other. A cutting device 101 and a notch forming device 102 are installed on the first production line, and a foam material removing device 103, an end bending device 104, and a foam material filling device 105 are installed on the second production line. is set up.

  The sandwich structure 13 conveyed on the first production line is cut by the cutting device 101 in a direction orthogonal to the conveyance direction at a predetermined position (step S101). Thereafter, in the process in which the cut sandwich panel 1 is transported on the first production line, at the left and right side edges of the cut surface 7 formed on both end surfaces in the transport direction, the ends of the pair of face materials 2 Then, by removing the end face of the foam material 3 filled between the face materials 2, substantially L-shaped notches 14 are formed at the four corners of the sandwich panel 1 (step S102). . However, it is not limited to the configuration in which the cutouts 14 are formed in all the corners of the sandwich panel 1, but the cutouts 14 are provided only on one side edge, for example, the side edge on the downstream side in the transport direction of the second production line. May be formed.

  The sandwich panel 1 in which the notch 14 is formed is transported on the second production line with the transport direction being changed by 90 ° in the horizontal direction. And on the said 2nd production line, the process which removes the end surface of the foam material 3 which forms each cut surface 7 with the foam material removal apparatus 103 first is performed (step S103). The foam material removing device 103 includes a grinder 103A at a position corresponding to each cut surface 7 of the sandwich panel 1, and the sandwich panel 1 is formed on each cut surface 7 by being conveyed on the second production line. The grinders 103 </ b> A enter between the end portions of the pair of face materials 2 through the cutout portions 14 on the downstream side in the conveying direction.

  Therefore, by transporting the sandwich panel 1 formed with the notches 14 onto the second production line in a state where the grinders 103 </ b> A as tools are rotated, the cut surfaces are cut from the notches 14 on the downstream side in the transport direction. Each grinder 103A is relatively moved along the direction in which 7 extends, and as shown in FIGS. 4B and 6B, the end face of the foamed material 3 forming each cut surface 7 is removed. Can do. However, the configuration is not limited to the configuration in which the sandwich panel 1 is moved, and the end surfaces of the foamed material 3 forming the cut surfaces 7 are removed by moving the grinders 103A with respect to the sandwich panel 1 that has stopped. It may be a simple configuration.

  Then, the edge part of each face material 2 which forms each cut surface 7 of the sandwich panel 1 is bend | folded by the edge part bending apparatus 104 on a 2nd production line, and it is a bending part 11 in each edge part. Is formed (step S104), and the cut end frame 4 is attached to these bent portions 11 in the manner shown in FIG. 4 (c) and FIG. 6 (c). Each cut end frame 4 is supplied as a bar material having a cut size, and when the cut end frame 4 is attached, an attachment portion is provided at one end of each cut end frame 4. 25 is set at the end of each face material 2 (step S105), and the foaming stock solution 12A is injected from the foam material filling device 105 into the reservoirs 28 and 38 of each cut end frame 4 (step S106).

  In this state, each cut end frame 4 is attached so as to slide on the end of each face material 2, so that each cut end frame in the mode shown in FIGS. 4 (c) and 6 (c). 4 is attached to the end of each face material 2. Thereafter, the foaming stock solution 12A in the reservoirs 28 and 38 foams, so that the gap between the cut end frame 4 and the inner surface 9 of the foamed material 3 is obtained as shown in FIGS. 4 (d) and 6 (d). The entire space 8 is filled with the foam material 12.

<Configuration and bending process of end bending apparatus according to first embodiment>
FIG. 10 is a schematic diagram illustrating a configuration example of the end bending device 104 in FIG. 8 and a process of bending the end of each face material 2. This end bending device 104 includes an outer surface support portion 71 that abuts on the outer surface side of each face material 2 opposite to the foam material 3, and an inner surface support that abuts on the inner surface side of each face material 2 on the foam material 3 side. Part 72 and a bending action part 73 that presses and bends the end of each face member 2. Two outer surface support portions 71 and two bending action portions 73 are provided in association with each face material 2. On the other hand, the inner surface support portion 72 is integrally formed as one member that contacts both inner surfaces of each face material 2. The two outer surface support portions 71 extend in parallel with each other, and a space substantially the same as the thickness of the sandwich panel 1 is formed between them.

  When bending the end portion of each face material 2, first, as shown in FIGS. 10A and 10B, the end bending device 104 is moved in a direction parallel to each face material 2. Thus, the end portion of the sandwich panel 1 enters between the two outer surface support portions 71, and the outer surface support portion 71 comes into contact with the outer surface side of each face material 2. At this time, a space 8 is formed between the end portions of each face material 2 by removing the foam material 3 adjacent to each end portion, and the inner surface support portion 72 enters into the space 8. The inner surface support portion 72 comes into contact with the inner surface side of each face material 2. More specifically, in the state of FIG. 10 (b), the outer surface support portion 71 is in surface contact with the outer surface side closer to the root side than the end portion that forms the bent portion 11 in each face material 2. The support portion 72 is in line contact with the inner surface side of the base portion of the end portion forming the bent portion 11 in each face material 2 at the contact portion 72A.

  Each bending action part 73 is slidably attached to the corresponding outer surface support part 71. Each outer surface support portion 71 is formed with a through hole 71A having a shape corresponding to the bending action portion 73 in a direction intersecting with the extending direction of the outer surface support portion 71, that is, in a direction intersecting with each face material 2. The bending action portion 73 is inserted into the through hole 71A. Thereby, each bending action part 73 can be slid to the direction which cross | intersects each face material 2, more specifically, the inclination direction which goes to the root side of the said edge part as it approaches the edge part of the face material 2. Retained. Each bending action part 73 is driven by, for example, a hydraulic cylinder.

  The opening on the face material 2 side of the through hole 71 </ b> A formed in each outer surface support portion 71 is opposed to the contact portion 72 </ b> A of the inner surface support portion 72 with the face material 2. Therefore, as shown in FIG. 10B, in the state where each contact portion 72A of the inner surface support portion 72 is in contact with the inner surface of the root portion of the end portion forming the bent portion 11 in each face material 2, Only the end of the face material 2 forming the bent portion 11 is opposed to the through hole 71A. If each bending action part 73 is slid to the face material 2 side in this state, and it enters into the space between the two outer surface support parts 71, as shown in FIG.10 (c), the edge part of each face material 2 will be shown. Are pressed by the corresponding bending action portions 73 and bent inward with the respective contact portions 72A of the inner surface support portion 72 as fulcrums.

  An arc-shaped pressing surface 73A and a stopper 73B formed adjacent to an end portion of the pressing surface 73A on the side far from the surface material 2 are formed on the surface of the bending member 73 on the surface material 2 side. Is provided. In the state shown in FIG. 10A, the pressing surface 73A of each bending action portion 73 is accommodated in the through hole 71A of each outer surface support portion 71, and is the side farther from the face material 2 in the pressing surface 73A. Is located at the opening on the face material 2 side of each through-hole 71A.

  In this state, the stopper 73B of each bending action portion 73 protrudes from the opening on the face material 2 side in the through hole 71A of each outer surface support portion 71. In this state, the end of the sandwich panel 1 is interposed between the outer surface support portions 71. When the portion is inserted, as shown in FIG. 10 (b), the end surface forming the cut surface 7 of each face member 2 comes into contact with the stopper 73B. Therefore, the position where the inner surface support portion 72 is inserted into the space 8 can be determined, and the bent portion is determined by the distance between the peripheral edge portion of the through hole 71A facing each contact portion 72A of the inner surface support portion 72 and the stopper 73B. A length of 11 is defined.

  If the end bending device 104 as shown in FIG. 10 is used, the end of each face material 2 is smoothly pressed by the pressing surface 73A formed in an arc shape in each bending action portion 73, and FIG. As shown in c), it is possible to accurately form the bent portion 11 that is bent 90 ° inward with each contact portion 72A of the inner surface support portion 72 as a fulcrum. Moreover, when the pressing surface 73A in each bending action part 73 acts from the outer surface side of each face material 2, and forms the bending part 11, the outer surface support part 71 and the inner surface support part 72 are the outer surface side and inner surface of a face material. Since each side abuts and receives the force acting during the bending process, the bent portion 11 can be formed accurately. Note that the pressing surface 73A of each bending action portion 73 is not limited to being formed in an arc shape, and may be formed in a curved surface shape other than an arc shape, a bent surface shape, a planar shape, or the like.

  In the above example, each bending action part 73 is configured to be slidable in an inclined direction toward the root side of the end part as it approaches the end part of the face material 2, but is not limited to such a configuration. Further, it may be configured to be slidable in an inclined direction toward the opposite side to the base side of the end portion as it approaches the end portion of the face material 2, and is slidable in an orthogonal direction with respect to each face material 2. It may be a simple configuration.

  In the above example, the end bending device 104 is moved in a direction parallel to each face material 2, so that the end of the sandwich panel 1 enters between the two outer surface support portions 71. Although it is shown, the sandwich panel 1 is moved between the outer surface support portions 71 of the end bending device 104 stopped by moving the sandwich panel 1 in a direction parallel to the respective face materials 2, without being limited to such a configuration. The structure which the edge part of the panel 1 penetrates may be sufficient.

  In this embodiment, the cut end frame 4 attached to the end portions of the pair of face materials 2 forming the cut surface 7 and the inner surface 9 of the foamed material 3 formed by removing the end surfaces. A space 8 can be formed between them. And the recessed part 20 which penetrates in this space 8 is formed in the cutting | disconnection end part frame 4, and the structure is formed by the prefabrication method by fitting with the edge part of another sandwich panel by using the said recessed part 20 as a fitting part. can do. That is, according to this embodiment, the sandwich structure 13 produced by the continuous production method is cut, and the cut end frame 4 is attached to the cut surface 7 as described above, which is suitable for the prefabrication method. The sandwich panel 1 can be easily manufactured.

  In particular, in the present embodiment, the foam material 3 is removed inward from the position of the cut end frame 4 attached to the end portions of the pair of face materials 2, and the inner surface 9 of the removed foam material 3 is removed. The cut end frame 4 can be arranged so as to face each other with the space 8 therebetween. Therefore, as compared with a configuration in which the end surface of the foam material 3 is removed in a shape corresponding to the cut end frame 4, the removal work of the foam material 3 can be facilitated and the foam material 3 generated during the removal work can be facilitated. It is possible to prevent the defective mounting of the cut end frame 4 from occurring due to the displacement of the inner surface 9.

  Moreover, in this embodiment, it becomes possible to bend the edge part of a pair of face material 2 which has formed the cut surface 7 by the space 8 formed by removing the end surface of the foam material 3, The cut end frame 4 can be attached to the bent end portion (folded portion 11). Therefore, the cut end frame 4 can be easily attached to the ends of the pair of face members 2.

  Further, in the present embodiment, the cut end frame 4 attached to the end portions of the pair of face materials 2 forming the cut surface 7, and the inner surface 9 of the foam material 3 formed by removing the end surfaces. The foam material 12 can be filled in the space 8 formed between the two. Thereby, problems, such as the fall of the intensity | strength of the sandwich panel 1 by the said space 8 existing, and the fall of heat insulation, can be prevented.

  In particular, the foamed stock solution is injected into the space 8 through the reservoir portions 28 and 38 formed in the cut end frame 4 and the foamed stock solution is foamed to fill the space 8 with the foam material 12. Therefore, the foam material 12 can be easily filled in the space 8. Here, since the recessed part 10 is formed in the inner surface 9 of the foamed material 3 formed by removing the end face, the foamed material that foams and expands upward from the reservoirs 28 and 38 is formed in the recessed part. It is easy to enter to the lower part of the reservoirs 28 and 38 through 10, and the foam material 12 can be filled evenly in the space 8.

  Moreover, in this embodiment, a tool is provided between the ends of the pair of face members 2 through the notches 14 formed by removing the end portions of the pair of face members 2 and the end face of the foam material 3. By inserting (grinder 103A) and relatively moving the tool along the direction in which the cut surface 7 extends, the end surface of the foamed material 3 can be easily removed.

Second Embodiment
In the first embodiment, the configuration in which the cut end frame 4 is attached only by fitting the end portions of the face materials 2 and the cut end frame 4 has been described. On the other hand, the second embodiment is different in that the cut end frame 4 is attached using a fixture provided separately from each face material 2 and the cut end frame 4. Yes.

  FIG. 11 is a perspective view showing an example of the cut end frame 4 attached to the upper end portion of the sandwich panel 1 manufactured by using the end bending apparatus according to the second embodiment of the present invention. This cut end frame 4 is different from the cut end frame 4 of the first embodiment only in the configuration of the mounting portion 25 and the point that the reservoir portion 28 is not provided, and the other configurations have the same configuration. Therefore, the same reference numerals are assigned to the same components in the drawings, and the description thereof is omitted.

  At each upper end portion of the frame main body 21 in the cut end frame 4, an attachment piece 84 is formed that extends downward, which is the direction in which the recess 20 is recessed. Further, a cover portion 85 is attached to each upper end portion of the frame main body 21 so as to cover the outer side of the attachment piece 84. The cover portion 85 is formed of a resin material having flexibility, and can be formed of a material softer than the mounting piece 84, for example, softer vinyl chloride than the vinyl chloride forming the mounting piece 84. Each cover portion 85 has one side edge attached to the upper end portion of the frame body 21 and can swing outward by elastically deforming around the one side edge. The attachment piece 84 and the cover portion 85 are opposed to each other at a predetermined interval in the horizontal direction, and form an attachment portion 25 for attaching the cut end frame 4 to the face material 2. However, the cover portion 85 can be omitted.

  FIG. 12 is a cross-sectional view showing an aspect when the cut end frame 4 of FIG. 11 is attached to the upper end portion of the sandwich panel 1. As shown in FIG. 12, when the cut end frame 4 of FIG. 11 is attached to the upper end of the sandwich panel 1, the sandwich panel 1 is transported on the continuous production line so that each face material 2 extends in the horizontal direction. The cut end frame 4 shown in FIG. 11 is attached to the sandwich panel 1 while being rotated by 90 °.

  When this cut end frame 4 is attached to the upper end of the sandwich panel 1, the foam material 3 is placed between a pair of face materials 2 as shown in FIG. 12 (a), as in the first embodiment. A process of removing the upper end surface of the foam material 3 forming the cut surface 7 is performed on the filled sandwich panel 1 to form the cut surface 7 as shown in FIG. A space 8 is formed between the upper ends of the pair of facing members 2. In this example, since the reservoir 28 is not provided in the cut end frame 4, it is not necessary to form the recess 10 in the inner surface 9 of the foam material 3, and the inner surface 9 is a flat surface.

  Thereafter, the upper end portions of the face materials 2 forming the cut surface 7 are bent inwardly, that is, toward the space 8 in a substantially L shape, thereby being parallel to each other as shown in FIG. A pair of step surfaces 17 extending in the direction is formed, and by these step surfaces 17, a step portion 18 is formed on the outer surface of the upper end portion of each face material 2. These step surfaces 17 are opposed to each other at an interval narrower than the distance between the pair of face members 2 at a portion other than the step surface 17, and the interval between the mounting pieces 84 of the cut end frame 4. It is approximately the same as the distance between the outer surfaces.

  In the present embodiment, through holes 16 are respectively formed at the upper ends of the pair of face materials 2 forming the cut surface 7, and each face material 2 is bent at the root side with respect to these through holes 16. As a result of the step surfaces 17 being formed, through holes 16 are formed in the respective step surfaces 17 as shown in FIG. Further, rivet holes 86 are formed at positions facing the through holes 16 in the respective attachment pieces 84 of the cut end frame 4.

  The cut end frame 4 is attached such that the outer surface of each attachment piece 84 is in contact with the inner surface of the stepped surface 17 of each face member 2. At this time, the rivet 19 as a fixing tool is fixed to the corresponding rivet hole 86 of the cut end frame 4 through the through hole 16 formed in each stepped surface 17, whereby the upper ends of the pair of face members 2. A rivet 19 is attached to the section and the cut end frame 4, and the cut end frame 4 is firmly fixed to the upper ends of the pair of face members 2. However, the fixture is not limited to the rivet 19 and may be another fixture such as a screw.

  Each cover portion 85 of the cut end frame 4 faces the outer side of the stepped surface 17 of each face member 2, and when the rivet 19 is attached, these cover portions 85 are elastically deformed outward. By doing so, the through hole 16 formed in each stepped surface 17 is exposed, and the rivet 19 is inserted from the through hole 16. Then, after fixing the rivet 19 to the rivet hole 86, the cover portion 85 is returned to its original shape, so that the head portion of the rivet 19 can be covered and protected by the cover portion 85, and the head portion and the cover of the rivet 19 can be protected. The portion 85 can be accommodated in the step portion 18.

  In a state where the cut end frame 4 is attached to the face material 2, the cut end frame 4 is opposed to the inner surface 9 of the foam material 3 with a space 8 therebetween as shown in FIG. The upper end of the sandwich panel 1 is covered with the cut end frame 4. Then, as shown in FIG. 12 (d), by injecting the foaming stock solution into the space 8 between the cut end frame 4 and the inner surface 9 of the foam material 3 from one end side of the cut end frame 4. The space 8 is filled with the foam material 12.

  In the case of a configuration in which the reservoir portion 28 is not provided as in this example, a space 8 that can insert an end bending device 204 described later may be formed in order to form the stepped surface 17. Such a configuration in which the reservoir portion 28 is not provided is advantageous in that the amount of removal of the end face of the foamed material 3 is small and the shape of the cut end frame 4 is simplified, so that the manufacturing cost can be reduced. On the other hand, in the configuration in which the reservoir portion 28 is provided, the foaming stock solution 12A can be uniformly injected, so there is an advantage that the leakage of the foaming stock solution 12A is small.

  11 and 12, only the configuration of the cut end frame 4 attached to the upper end portion of the sandwich panel 1 is shown, but the cut end frame 4 attached to the lower end portion of the sandwich panel 1 is also attached to the attachment piece. 84 and the cover portion 85 are formed, and the attachment portion 25 can be attached to the lower end portion of the sandwich panel 1 by using a fixing tool such as the rivet 19.

  In the above example, the configuration in which each attachment piece 84 of the cut end frame 4 is in contact with the inner surface of the upper end portion of each face member 2 is not limited to such a configuration. The structure which contacts the outer surface of an upper end part may be sufficient.

<Configuration and bending process of end bending apparatus according to second embodiment>
FIG. 13 shows an example of the configuration of the end bending apparatus 204 that bends the end of each face material 2 to form a bent portion composed of the stepped surface 17 and the stepped portion 18 as shown in FIG. FIG. This end bending device 204 is similar to the end bending device 104 in the first embodiment shown in FIG. 8 with respect to the sandwich panel 1 after the end surface of the foam material 3 is removed by the foam material removing device 103. Then, the process of bending the end of each face material 2 is performed. The end bending device 204 is disposed on the inner surface side of the face material 2 from the inner surface support portion 91 and adjacent to the inner surface support portion 91 and the inner surface support portion 91 in contact with the inner surface side of each face material 2. A face material receiving portion 92 and a bending action portion 93 that presses and bends an end portion of each face material 2 are provided. Two inner surface support portions 91, face material receiving portions 92, and bending action portions 93 are provided in association with each face material 2.

  The two inner surface support portions 91 oppose each other in the direction orthogonal to the direction in which each face material 2 extends, and the distance between the far ends of these inner surface support portions 91 is a pair of face materials 2. It is almost the same as the distance between. On the other hand, the two face material receiving portions 92 face each other in the direction orthogonal to the direction in which each face material 2 extends, and the distance between the far ends of these face material receiving portions 92 is the inner surface support. The distance between the end portions of the portion 91 is shorter. More specifically, the distance between the far ends of the two face material receiving portions 92 substantially coincides with the distance between the inner surfaces of the two step surfaces 17 formed by the end bending device 204. ing. Each inner surface support portion 91 is attached to an end portion of the corresponding face material receiving portion 92.

  When bending the end portion of each face material 2, first, as shown in FIG. 13, the end bending device 204 is moved in a direction parallel to each face material 2, so that each face material 2 Each inner surface support portion 91 and each face material receiving portion 92 enter the space 8 formed between the end portions, and each inner surface support portion 91 comes into contact with the inner surface side of the corresponding face material 2. At this time, each inner surface support portion 91 is in line contact with the inner surface side of the base portion of the end portion forming the stepped surface 17 in the corresponding face material 2 at the contact portion 91A. In this state, as shown in FIG. 13, the end portion of each face material 2 is not bent, and a space is formed between the end portion of each face material 2 and the face material receiving portion 92.

  Each bending action part 93 is hold | maintained so that a slide to the orthogonal | vertical direction with respect to each face material 2 is driven, for example by the hydraulic cylinder. If each bending action part 93 is slid in the state shown in FIG. 13, the edge part of each face material 2 will be pressed by the corresponding bending action part 93, and each surface will use each contact surface 91A with each inner surface support part 91 as a fulcrum. The material 2 is bent inward. At this time, the inner surfaces of the end portions of the respective face materials 2 bent inward by the bending action portion 93 come into contact with the corresponding face material receiving portions 92, respectively, as shown in FIG. 12 (c). 2 end portions are bent into a substantially L shape, and a stepped surface 17 is formed. The pressing surfaces of the bending action portions 93 that press the end portions of the face materials 2 and the contact surfaces of the face material receiving portions 92 with which the inner surfaces of the end portions of the face materials 2 abut are formed by flat surfaces. Has been.

  In the above example, each bending action part 93 is configured to be slidable in a direction orthogonal to each face material 2, but not limited to such a configuration, each bending action part 93 is perpendicular to each face material 2. The structure which can be slid to an inclination direction with respect to a direction may be sufficient.

  Further, in the above example, the inner surface support portion 91 and the face material receiving portion 92 are inserted between the two face materials 2 by moving the end bending device 204 in a direction parallel to the face materials 2. However, the present invention is not limited to such a configuration, and the inner surface support portion 91 of the end bending device 204 stopped by moving the sandwich panel 1 in a direction parallel to each face material 2 is shown. And the structure that the face material receiving part 92 enters between the two face materials 2 may be sufficient.

  In the above embodiment, as shown in FIG. 1, the cut end frame 4 having the recess 20 at the upper end of the sandwich panel 1, the cut end frame 4 having the protrusion 30 at the lower end, and the recess 40 at the left end. The configuration in which the side end frame 5 having the protrusions 50 and the side end frame 5 having the protrusions 50 on the right end thereof are respectively attached has been described. However, the combination of the recesses 20 and 40 and the protrusions 30 and 50 is not limited to this configuration, and can be changed as appropriate.

  That is, either one of the cut end frame 4 having the concave portion 20 or the convex portion 30 can be appropriately attached to the upper end portion and the lower end portion of the sandwich panel 1, and the left end portion and the right end portion of the sandwich panel 1. Either of the side end frame 5 having the concave portion 40 or the convex portion 50 can be appropriately attached to the portion.

It is the perspective view which showed an example of the sandwich panel manufactured using the edge part bending apparatus which concerns on 1st Embodiment of this invention. It is a partial cross section figure of the sandwich panel of Drawing 1, and shows the section which cut the sandwich panel in the thickness direction. It is the perspective view which showed an example of the cutting | disconnection end part frame attached to the upper end part of the sandwich panel of FIG. It is sectional drawing which showed the aspect at the time of attaching the cutting | disconnection edge part frame of FIG. 3 to the upper end part of a sandwich panel. It is the perspective view which showed an example of the cutting | disconnection end part frame attached to the lower end part of the sandwich panel of FIG. It is sectional drawing which showed the aspect at the time of attaching the cutting | disconnection edge part frame of FIG. 5 to the lower end part of a sandwich panel. It is the conceptual diagram which showed the manufacturing process of the sandwich structure by a continuous production method. It is the conceptual diagram which showed the process of manufacturing the sandwich panel of FIG. 1 from a sandwich structure. It is the flowchart which showed the process of manufacturing the sandwich panel of FIG. 1 from a sandwich structure. It is the schematic which showed the structural example of the edge part bending apparatus which concerns on 1st Embodiment, and the process of bending the edge part of each face material. It is the perspective view which showed an example of the cutting | disconnection edge part frame attached to the upper end part of the sandwich panel manufactured using the edge part bending apparatus which concerns on 2nd Embodiment of this invention. It is sectional drawing which showed the aspect at the time of attaching the cutting | disconnection edge part frame of FIG. 11 to the upper end part of a sandwich panel. It is the schematic which showed the structural example of the edge part bending apparatus which concerns on 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sandwich panel 2 Face material 3 Foam material 4 Cut end part frame 7 Cut surface 8 Space 9 Inner surface 10 Concave part 11 Bending part 12 Foam material 13 Sandwich structure 17 Step surface 19 Rivet 25 Attachment part 35 Attachment part 71 Outer surface support part 72 Inner surface support portion 73 Bending operation portion 91 Inner surface support portion 92 Face material receiving portion 93 Bending operation portion

Claims (6)

In the step of manufacturing a sandwich panel by cutting a sandwich structure in which a foam material is filled between a pair of facing materials facing each other and attaching an end frame to the cutting surface, the cutting surface is formed. An end bending device for forming a bent portion to which the end frame is fixed with respect to the end portions of the pair of face materials from which part or all of the end surfaces of the foam material are removed. ,
An inner surface support portion that is inserted into the inner space of the pair of face materials and receives the force acting during bending by contacting the inner surface side of the pair of face materials;
An end bending apparatus including a bending operation portion that acts from an outer surface side of the face material and forms the bending portion.   The end bending apparatus according to claim 1, wherein the bent portion is formed by bending an end portion of the face material inward.   The end bending apparatus according to claim 2, wherein an end portion of the face material is bent 90 ° toward the inward side. Further comprising an outer surface support portion that abuts on the outer surface side of the face material and receives a force acting during bending,
The outer surface support part has a guide function of the bending action part,
The said bending action part is comprised so that it may contact | abut to the end surface which forms the cut surface of the said face material at the time of insertion to the said inner space, and an insertion position is determined. The end bending apparatus according to any one of the above.   The end bending apparatus according to claim 1, wherein the bent portion has a stepped surface formed in parallel to the outer surface of the face material and on the inner side of the face material. A face material receiving portion that is adjacent to the inner surface support portion and is disposed on the inner side of the face material from the inner surface support portion and has a surface parallel to the outer surface;
6. The end bending apparatus according to claim 5, wherein the face material receiving portion receives the bending action portion acting from an outer surface side of the face material to form the step surface.

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