Fusing device

Abstract

To provide a fusion device capable of suppressing complication of fusion work regardless of whether light can pass through a member to be fused or not.SOLUTION: A fusion device comprises: a conveying unit for horizontally conveying a laminate formed by laminating a three-dimensional structural material containing a synthetic resin, and a plate-like material containing a synthetic resin, to a direction perpendicular to a lamination direction of the laminate; a pressurizing unit for pressurizing from the outside in the lamination direction a laminate conveyed by the conveying unit; and a radiation unit for tracking a contact portion that contacts between a protruded portion and the plate-like material among the laminate conveyed by the conveying unit to radiate a light beam for heating the contact portion.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a fusing device.

Background Art

[0002] Patent Document 1 describes a method for preparing a thermoplastic composite material. In this Patent Document 1, in order to improve mechanical performance, two parts including continuous carbon fibers containing a thermoplastic polymer and a laser absorption additive are joined. And in Patent Document 1, immediately before butting these two parts, laser irradiation is performed to heat and melt them, and then the two parts are butted and pressed to be joined.

[0003] Patent Document 2 describes a joining method in which a metal, a resin member through which laser light passes, and a glass plate are overlapped, the glass plate and the metal are fixed by a clamp, and laser light is irradiated from the resin member side through the glass plate to the overlapping joint portion between the resin member and the metal for joining.

[0004] Patent Document 3 describes a welding method in which a light absorber is sandwiched between two resin members that do not transmit laser light to form an overlapping portion, and the light absorber and the resin member in the overlapping portion are melted by directly irradiating the light absorber with laser light to weld the two resin members.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0006] Incidentally, the composite material containing the above-described thermoplastic resin is desired to achieve weight reduction while ensuring rigidity. As a means for this, joining a flat or sheet-shaped composite material and a three-dimensional composite material having a plurality of convex portions can be mentioned. However, when irradiating the joining surface with laser light immediately before butting the joining surfaces as in Patent Document 1, it may be difficult to irradiate the necessary portions with laser light depending on the three-dimensional shape of the composite material. Also, when irradiating laser light from the surface side of the composite material after overlapping the resin member with the joining target as in Patent Document 2, it is premised that at least one of the resin members can transmit the laser light. For this reason, there are restrictions on the applicable composite materials. As a countermeasure, when arranging an intermediate material such as a light absorber between the resin members and directly irradiating the intermediate material with laser light as in Patent Document 3, it may be difficult to irradiate the necessary portions with laser light depending on the three-dimensional shape of the composite material. There is also concern that it may hinder weight reduction.

[0007] The present disclosure has been made in view of the above circumstances, and provides a fusion device for a flat or sheet-shaped composite material and a three-dimensional composite material having a plurality of convex portions in a simpler system.

Means for Solving the Problems

[0008] In order to solve the above problems, the following configuration is adopted. According to a first aspect of the present disclosure, a fusion device includes a three-dimensional structural material formed from a material containing a synthetic resin, extending in a first direction and a second direction intersecting the first direction, and having a convex portion protruding on one side in at least a third direction intersecting the first direction and the second direction; and a plate-like material formed from a material containing a synthetic resin, extending in the first direction and the second direction, and disposed on one side in the third direction of the three-dimensional structural material and in contact with the convex portion protruding on one side in the third direction. The fusion device fuses the three-dimensional structural material and the plate-like material, and includes a conveying unit configured to convey a laminate in which the plate-like material is laminated on one side and the other side in the third direction with respect to the three-dimensional structural material; a pressing unit configured to press the laminate conveyed by the conveying unit to press the plate-like material disposed on one side in the third direction against the convex portion protruding on one side in the third direction; and an irradiation unit configured to irradiate, from one side in the third direction, a light beam that follows a contact portion where the convex portion protruding on one side in the third direction of the laminate pressed by the pressing unit contacts the plate-like material disposed on one side in the third direction and heats the contact portion. The pressing part includes a pressing plate member that is formed in a plate shape so as to be capable of transmitting the light beam, extends in the first direction and the second direction, and covers the laminate from one side in the third direction, and a pressing member that presses the pressing plate member from one side in the third direction.

Advantages of the Invention

[0009] According to the fusion device according to the present disclosure, it is possible to suppress the complication of the fusion operation regardless of whether the member to be fused is light-transmissive or not.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

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Figure 8

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Figure 10

[0011] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. [First Embodiment] FIG. 1 is an exploded perspective view of a laminate to be fused by a fusion bonding apparatus in the first embodiment of the present disclosure. As shown in FIG. 1, a laminate 10 to be fused by the fusion bonding apparatus of this first embodiment includes a three-dimensional structural material 1 formed of a material containing a synthetic resin and having a plurality of convex portions 3, and a plate-like material 2 formed of a material containing a synthetic resin and laminated on the three-dimensional structural material 1. Both the three-dimensional structural material 1 and the plate-like material 2 exemplified in this first embodiment are thermoplastic CFRP (Carbon Fiber Reinforced Plastics). Examples of the synthetic resin contained in this thermoplastic CFRP include polyamide and PEEK (Poly Ether Ether Ketone). In the laminate 10 of the present embodiment, two plate-like materials 2 and one three-dimensional structural material 1 are laminated. And the three-dimensional structural material 1 is sandwiched by these two plate-like materials 2.

[0012] The three-dimensional structural material 1 extends in a first direction D1 and a second direction D2 intersecting the first direction D1. The three-dimensional structural material 1 has a plurality of convex portions 3 protruding in a third direction D3 intersecting the first direction D1 and the second direction D2. The three-dimensional structural material 1 illustrated in the present embodiment has a corrugated shape, in other words, a corrugated shape, as a shape having a plurality of convex portions 3. This three-dimensional structural material 1 includes a first edge 4 and a second edge 5 that extend parallel to each other in a plan view, and the extending directions of the first edge 4 and the second edge 5 are the first direction D1. The plurality of convex portions 3 illustrated in the present embodiment are formed side by side in the first direction D1.

[0013] All of these plurality of convex portions 3 have the same shape and extend in the second direction D2. That is, the ridge lines 3a of these convex portions 3 extend in the second direction D2 in a plan view and form a straight line from the first edge 4 to the second edge 5, and the ridge lines 3a of these plurality of convex portions 3 extend parallel to each other. And the height of the convex portion 3 in the third direction D3 intersecting the first direction D1 and the second direction D2 is substantially constant. That is, the convex portion 3 forms a protrusion with a constant height.

[0014] The plate-like material 2 illustrated in the present embodiment extends in the first direction D1 and the second direction D2 and is formed in a sheet shape having a substantially constant thickness. The plate-like material 2 of the present embodiment has the same width dimension as the dimension in the second direction D2 of the three-dimensional structural material 1 described above. The plate-like material 2 disposed on one side in the third direction D3 is in contact with the convex portion 3 protruding on one side in the third direction D3. The plate-like material 2 disposed on the other side in the third direction D3 is in contact with the convex portion 3 protruding on the other side in the third direction D3. The synthetic resin constituting the three-dimensional structural material 1 and the plate-like material 2 of the present embodiment is configured not to transmit the light beam irradiated by the irradiation unit 23 described later.

[0015] FIG. 2 is a perspective view showing a schematic configuration of the fusion device according to the first embodiment of the present disclosure. As shown in FIG. 2, the fusion device 20 includes a transport unit 21, a pressing unit 22, and an irradiation unit 23. The conveying unit 21 conveys the laminate 10 as a workpiece. The conveying unit 21 conveys the laminate 10 in a direction intersecting the third direction D3 in which the three-dimensional structural material 1 and the plate-like material 2 of the laminate 10 are laminated. In the present embodiment, the conveying unit 21 aligns the third direction D3 of the laminate 10 with the vertical direction Dh, and further conveys the laminate 10 with the first direction D1 in which the first edge 4 and the second edge 5 extend in the horizontal direction as the conveying direction Dt. Here, as the configuration of the conveying unit 21 for conveying the laminate 10, a belt conveyor can be exemplified.

[0016] In the following description, the locus (virtual surface) of the lower surface of the laminate 10 in contact with the conveying unit 21 is referred to as the conveying path 24. This conveying path 24 is substantially the same surface as the conveying surface of the belt (in other words, the upper surface) when the conveying unit 21 is a belt conveyor, for example. And the width direction Dw of this conveying path 24 coincides with the second direction D2 of the laminate 10 conveyed by the conveying unit 21. Further, among the plate-like materials 2 arranged above and below the laminate 10, the plate-like material 2 arranged below the three-dimensional structural material 1 is in a fused state fused with the convex portion 3 protruding downward toward the three-dimensional structural material 1. Therefore, in the following description, unless distinction is necessary, the convex portion 3 means the convex portion 3 protruding upward.

[0017] The pressing unit 22 presses the laminate 10 conveyed by the conveying unit 21 from above in the vertical direction Dh. The pressing unit 22 includes a pressing plate member 25 and a pressing roller (pressing member) 26. The pressing plate member 25 is conveyed by the conveying unit 21 continuously with the laminate 10 in the conveying direction Dt. The pressing plate member 25 is made transmissive to the light beam irradiated by the irradiation unit 23. The pressing plate member 25 is arranged to cover the entire surface of the surface (hereinafter simply referred to as the anti-fusion surface 27) facing upward of the plate-like material 2 arranged above the laminate 10 to be fused among the laminates 10 conveyed by the conveying unit 21. As the pressing plate member 25, plate glass can be used, but it is not limited to plate glass as long as it has the required strength, rigidity, transmissibility, and heat resistance.

[0018] The pressing plate member 25 of the present embodiment is reused, for example, after being conveyed to the most downstream in the conveying direction Dt and then moved to the most upstream in the conveying direction Dt by a pressing plate member conveying device (not shown) or an operator. Further, the end face 25t of the pressing plate member 25 in the conveying direction Dt is arranged within a range that does not inhibit the fusion by the irradiation of the laser light described later. For example, when the laser light is irradiated from above perpendicular to the conveying direction Dt, the position of the end face 25t of the pressing plate member 25 in the conveying direction Dt is arranged so as not to coincide with the fusion range of the laminate 10 in the conveying direction Dt. Although the case where the conveying unit 21 continuously conveys the laminate 10 and the pressing plate member 25 is illustrated, for example, the laminate 10 and the pressing plate member 25 may be intermittently conveyed by the conveying unit 21.

[0019] The pressing plate member 25 has a width dimension that is the same as or slightly larger than the dimension of the laminate 10 in the second direction D2. In the present embodiment, a plurality of pressing plate members 25 having a rectangular shape in plan view are used, and these plurality of pressing plate members 25 are arranged on the laminate 10 side by side without gaps in the conveying direction Dt.

[0020] The pressing roller 26 presses the pressing plate member 25 from above to below in the vertical direction Dh. The pressing roller 26 of the present embodiment presses the laminate 10 conveyed by the conveying unit 21 from above to below via the pressing plate member 25. A plurality of pressing rollers 26 are provided at intervals in the conveying direction Dt. The pressing roller 26 of the present embodiment has a columnar shape that can rotate around a rotation axis O1 extending in the width direction Dw of the conveying path 24, which is a horizontal direction perpendicular to the conveying direction Dt of the laminate 10 by the conveying unit 21. By pressing the laminate 10 via the pressing plate member 25 with these pressing rollers 26, the laminate 10 sandwiched between the pressing plate member 25 and the conveying unit 21 is pressed from both outer sides in the vertical direction Dh. In this way, when the laminate 10 is pressed by the pressing unit 22, the fused range of the convex portion 3 of the three-dimensional structural material 1 and the plate-like material 2 are in a closely attached state. As described above, for example, when the laminate 10 and the pressing plate member 25 are intermittently conveyed, it is assumed that one of the pressing rollers 26 comes off the pressing plate member 25 and is in a position where it cannot press the pressing plate member 25. However, since the other pressing roller 26 presses the pressing plate member 25, it is possible to uniformly press the anti-fusion surface 27 of the laminate 10.

[0021] Although the case where the pressing roller 26 presses the pressing plate member 25 has been described, the configuration using the roller structure is not limited as long as the laminate 10 can be pressed. For example, a pressing member (not shown) that presses while sliding with respect to the pressing plate member 25 may be used. Further, in FIG. 2, the case where one pressing unit 22 includes two pressing rollers 26 is illustrated, but the number of pressing rollers 26 included in one pressing unit 22 is not limited to two. For example, two or more pressing rollers 26 may be provided on each of the upstream side Dtu and the downstream side Dtd in the conveying direction.

[0022] The irradiation unit 23 irradiates the laminate 10 being conveyed by the conveyance unit 21 with a light beam. The irradiation unit 23 irradiates the laminate 10 with a light beam from above, which is on the opposite side of the conveyance unit 21 in the vertical direction Dh. Specifically, the irradiation unit 23 irradiates the plate-like material 2 with a light beam along the contact portion 28 where the convex portion 3 protruding upward and the plate-like material 2 disposed above the three-dimensional structure material 1 are in contact. By irradiating this light beam, the contact portion 28 is heated. Further, the irradiation unit 23 irradiates a light beam following the displacement of the contact portion 28 being conveyed by the conveyance unit 21. The irradiation unit 23 of the present embodiment includes an irradiation unit main body 31, a position measuring device 32, a temperature monitoring device 33, and a control device 34.

[0023] The irradiation unit 23 of the present embodiment uses laser light as the light beam for heating the contact portion 28. As the laser oscillation device (not shown) that generates the laser light, any laser oscillation device capable of oscillating laser light that can melt the synthetic resin of the plate-like material 2 and the synthetic resin of the convex portion 3 at the contact portion 28 may be used. For example, a fiber laser, a disk laser, a semiconductor laser, and a YAG laser can be mentioned. The laser light of the laser oscillation device (not shown) is transmitted to the irradiation unit main body 31 via the transmission fiber 35.

[0024] The irradiation unit main body 31 moves the optical axis so as to follow the contact portion 28 that moves from the upstream side Dtu in the conveyance direction to the downstream side Dtd in the conveyance direction. In the present embodiment, since the convex portion 3 of the three-dimensional structure material 1 extends in the width direction Dw of the conveyance path 24, the contact portion 28 of the three-dimensional structure material 1 forms a straight line extending in the width direction Dw of the conveyance path 24 as viewed from above. The irradiation unit main body 31 of the present embodiment scans the laser light transmitted by the transmission fiber 35 in the width direction Dw of the conveyance path 24 along the contact portion 28 while following the contact portion 28 that moves to the downstream side Dtd in the conveyance direction. As the mechanism for following the laser light to the contact portion 28 that moves in the conveyance direction Dt and the mechanism for scanning the laser light in the width direction Dw of the conveyance path 24, a galvanometer mirror can be exemplified respectively.

[0025] FIG. 3 is a diagram showing a schematic configuration of the irradiation unit main body in the first embodiment of the present disclosure. FIG. 4 is a view of the irradiation unit main body in the first embodiment of the present disclosure as viewed from the conveyance direction. As shown in FIGS. 3 and 4, the irradiation unit main body 31 of the present embodiment includes a first lens unit 36, a first galvanometer mirror 37, a second galvanometer mirror 38, and a second lens unit 39. The first lens unit 36 adjusts the laser light transmitted by the transmission fiber 35 to predetermined laser light that can be scanned by the first galvanometer mirror 37. The first galvanometer mirror 37 scans the optical axis of the laser light in the width direction Dw of the conveyance path 24. The laser light scanned in the width direction Dw of the conveyance path 24 by the first galvanometer mirror 37 travels toward the second galvanometer mirror 38. The second galvanometer mirror 38 scans the optical axis of the laser light scanned by the first galvanometer mirror 37 in the conveyance direction Dt, that is, in the upstream conveyance direction Dtu and the downstream conveyance direction Dtd, respectively. In other words, the second galvanometer mirror 38 moves the laser light scanned by the first galvanometer mirror 37 in the conveyance direction Dt according to the conveyance speed by the conveyance unit 21 and causes it to follow the contact portion 28 to be heated. The second lens unit 39 condenses the laser light toward the contact portion 28.

[0026] Here, the driving speed of the first galvanometer mirror 37 when scanning in the width direction Dw of the conveyance path 24 is set to a driving speed that can irradiate the entire range of the contact portion 28 to be heated of one irradiation unit main body 31 during one cycle of operation of the second galvanometer mirror 38 in the conveyance direction Dt. In other words, the driving speed of this first galvanometer mirror 37 is the speed obtained by dividing the length of the contact portion 28 in the width direction Dw by the time of one cycle of the second galvanometer mirror 38. Although the case where the laser light is irradiated only once in one direction to the contact portion 28 has been exemplified, if an appropriate temperature distribution cannot be obtained by one irradiation, multiple irradiations may be performed on the same contact portion 28 during one cycle of the second galvanometer mirror 38. In this case, the driving speed of the second galvanometer mirror 38 may be the product of the driving speed in the case of the above single irradiation and the number of irradiations, that is, a multiple corresponding to the number of irradiations. In addition, it is desirable that the arrangements of the first galvanometer mirror 37 and the second galvanometer mirror 38 described above be at positions within the optical system in the irradiation unit main body 31 where laser light can be reflected with a small beam diameter. By doing so, the first galvanometer mirror 37 and the second galvanometer mirror 38 can be miniaturized and lightened, so that the degree of freedom in installing the irradiation unit main body 31 can be improved. In addition, in the present embodiment, illustration of a refrigerant pipe or the like for cooling the inside of the irradiation unit main body 31 is omitted.

[0027] As shown in FIG. 2, the irradiation unit 23 of the present embodiment includes a plurality of irradiation unit main bodies 31 arranged in the width direction Dw of the conveyance path 24. Each of these plurality of irradiation unit main bodies 31 can irradiate laser light onto a region in a predetermined width direction Dw. And each irradiation region where laser light is irradiated by these plurality of irradiation unit main bodies 31 is continuous in the width direction Dw of the conveyance path 24. That is, by arranging the plurality of irradiation unit main bodies 31 side by side in the width direction Dw, it becomes possible to irradiate laser light over the entire width direction Dw of the laminate 10. Note that when it is possible to scan laser light over the entire width direction Dw of the laminate 10 with one irradiation unit main body 31, it is not necessary to arrange the plurality of irradiation unit main bodies 31 side by side. Also, the arrangement of the plurality of irradiation unit main bodies 31 is not limited to being arranged at the same position in the conveyance direction Dt. For example, when it is difficult to arrange the plurality of irradiation unit main bodies 31 at the same position in the conveyance direction Dt, the positions of the adjacent irradiation unit main bodies 31 in the width direction Dw of the conveyance path 24 may be shifted in the conveyance direction Dt for arrangement.

[0028] In the present embodiment, one pressing unit 22 is provided for one irradiation unit main body 31. And the pressing plate member 25 used in the pressing unit 22 on the upstream side Dtu in the conveyance direction is conveyed to the downstream side Dtd in the conveyance direction and is also used in the pressing unit 22 on the downstream side Dtd in the conveyance direction.

[0029] In the above description, a configuration has been described in which the contact portion 28 is heated by irradiating the contact portion 28 with laser light while scanning the laser light in the width direction Dw of the conveyance path 24. However, the configuration is not limited to scanning the laser light in the width direction Dw of the conveyance path 24. As the laser light irradiated onto the laminate 10 by the irradiation unit main body 31, for example, a line beam linearly extending in the width direction Dw of the conveyance path 24 may be used. For generating the line beam, for example, a rod lens, a cylindrical lens, a rod integrator, a fly-eye lens, a microlens array, a diffraction element, or the like can be used. Further, in the same manner as in the case of scanning the above-described laser light in the width direction Dw of the conveyance path 24, when the entire width direction Dw of the laminate 10 cannot be irradiated with the line beam by one irradiation unit main body 31, a plurality of irradiation unit main bodies 31 capable of irradiating the line beam may be arranged side by side in the width direction Dw of the conveyance path 24. By using such a line beam, it is not necessary to secure the time related to the scanning in the width direction Dw of the conveyance path 24, and thus a more simple system can realize the fusion device for the composite material. Further, by using the line beam, it is not necessary to consider the synchronization with the scanning timing, and thus the conveyance speed can be increased. When the above line beam is used, the first galvanomirror 37 of the irradiation unit main body 31 described above can be omitted.

[0030] The range in which the laser light can be made to follow in the conveyance direction Dt by the irradiation unit 23 of the present embodiment (hereinafter simply referred to as the irradiation range of the laser light) has a predetermined size on the upstream side Dtu in the conveyance direction and the downstream side Dtd in the conveyance direction with respect to a predetermined position in the conveyance direction Dt. The pressing unit 22 of the present embodiment is disposed on the upstream side Dtu in the conveyance direction and the downstream side Dtd in the conveyance direction of the irradiation range of the laser light, in other words, on both outer sides in the conveyance direction Dt of the irradiation range of the laser light.

[0031] The fusion device 20 of this embodiment includes a plurality of irradiation units 23 spaced apart in the conveying direction Dt. More specifically, the fusion device 20 includes a first irradiation unit 23U and a second irradiation unit 23D as the plurality of irradiation units 23. These first irradiation unit 23U and second irradiation unit 23D irradiate laser light along different contact portions 28 of the same laminate 10, respectively. The fusion device 20 of this embodiment heats, for example, the odd-numbered contact portions 28 with the first irradiation unit 23U and heats the even-numbered contact portions 28 with the second irradiation unit 23D. By doing so, it becomes possible to increase the conveying speed of the laminate 10 while sufficiently heating all the contact portions 28 as compared with the case where only one irradiation unit 23 is used, for example.

[0032] The position measuring device 32 measures the position of the convex portion 3 and the irradiation position of the laser light, and outputs the position information of these convex portions 3 and the irradiation position information of the laser light toward the control device 34, respectively. As a measurement method by the position measuring device 32, a method of measuring the conveying position of the convex portion 3 and the irradiation position of the laser light by image recognition from the outside in the width direction Dw of the conveying path 24 can be exemplified.

[0033] The temperature monitoring device 33 non-contactly monitors the temperature of the anti-fusion surface 27 and outputs information on the monitoring result toward the control device 34. As the temperature monitoring device 33, a thermoviewer can be exemplified. Here, on the surface of the plate-like material 2 in contact with the pressing plate member 25, the temperature of the irradiation position where the laser light is irradiated has risen, and the temperature monitoring device 33 mainly monitors the temperature of this irradiation position.

[0034] The control device 34 controls the operation of the irradiation unit 23 based on the measurement result by the position measurement device 32 and the monitoring result by the temperature monitoring device 33. More specifically, the control device 34 displaces the optical axis of the irradiation unit main body 31 so that the position of the contact portion 28 in the first direction D1 coincides with the irradiation position of the laser beam based on the measurement result by the position measurement device 32. Further, the control device 34 controls the irradiation time of the laser beam by the irradiation unit 23 and the output of the laser beam so that the surface temperature of the anti-fusion surface 27 of the plate-like material 2 at the irradiation position of the laser beam is kept lower than the temperature at which damage to the plate-like material 2 may occur, based on the monitoring result by the temperature monitoring device 33.

[0035] Here, the surface temperature of the anti-fusion surface 27 irradiated with the laser beam is correlated with the fusion surface temperature of the plate-like material 2 in contact with the convex portion 3 and can be obtained in advance by experiments or simulations. A map, table, mathematical formula, etc. of the surface temperature of the anti-fusion surface 27 and the fusion surface temperature are stored in advance in a storage device (not shown) such as a non-volatile memory in the control device 34. Then, the control device 34 obtains the fusion surface temperature based on the surface temperature of the anti-fusion surface 27 detected by the temperature monitoring device 33, and controls the irradiation unit main body 31 of the irradiation unit 23 so that the obtained fusion surface temperature is within an appropriate range. The combination of the position measurement device 32, the temperature monitoring device 33, and the control device 34 is provided for each irradiation unit 23. In the figure, among the plurality of irradiation units 23, the combination of the position measurement device 32, the temperature monitoring device 33, and the control device 34 provided for one irradiation unit 23 is shown, and the combinations provided for the other irradiation units 23 are not shown (the same applies to the second to fifth embodiments and modification examples hereinafter).

[0036] (Function and Effect) According to the fusion device 20 of the first embodiment, when fusing the three-dimensional structural material 1 having a plurality of convex portions 3 and the plate-like material 2 laminated on the three-dimensional structural material 1, while conveying the laminate 10 of the three-dimensional structural material 1 and the plate-like material 2 in the conveying direction Dt, laser light is irradiated to heat the contact portion 28 where the convex portion 3 contacts the plate-like material 2. Further, when heating the contact portion 28, the laminate 10 can be pressurized from above. Also, since the laser light of the irradiation unit 23 follows the contact portion 28, the three-dimensional structural material 1 and the plate-like material 2 can be fused at the contact portion 28 while the laminate 10 is being conveyed by the conveying unit 21. Therefore, regardless of whether the plate-like material 2 is light-transmissive or not, it is possible to fuse the three-dimensional structural material 1 and the plate-like material 2 without disposing an intermediate material between the convex portion 3 and the plate-like material 2. Therefore, it is possible to suppress the complication of the fusing operation. Also, since the laser light is not irradiated to the portions that do not require heating, it is possible to suppress the occurrence of the influence of unnecessary heating on the three-dimensional structural material 1 and the plate-like material 2.

[0037] According to the fusion device 20 of the first embodiment, further, the pressing unit 22 includes a pressing plate member 25 that is made transmissive to laser light and covers the plate-like material 2 disposed above the three-dimensional structural material 1 from above, and a pressing roller 26 that presses the pressing plate member 25 from above. Thereby, it is possible to reduce the local application of the pressing force by the pressing roller 26 to the laminate 10, and thus it is possible to suppress the deformation of the laminate 10. Also, it is possible to suppress the conveyance of the pressing plate member 25 from being inhibited, and the change in the transmittance of the laser light due to the surface of the pressing plate member 25 being soiled, damaged, etc. Furthermore, when using a plate glass as the pressing plate member 25, if the surface of the pressing plate member 25 is soiled or damaged, the dirt and scratches can be removed by polishing. Therefore, it is possible to easily maintain the surface of the pressing plate member 25 in a normal state. Further, since the end face 25t of the pressing plate member 25 in the conveying direction Dt is disposed in a range that does not inhibit the irradiation of the laser light, it is possible to suppress the reflection or scattering of the laser light by the end face 25t.

[0038] According to the fusion device 20 of the first embodiment, further, a plurality of irradiation units 23 provided at intervals in the conveyance direction Dt irradiate laser light to different contact portions 28 for heating. Thereby, without reducing the conveyance speed, it is possible to sufficiently secure the irradiation time of the laser light to one contact portion 28. Therefore, it is possible to shorten the time required for fusing the three-dimensional structural material 1 and the plate-shaped material 2, and to suppress a decrease in the reliability of fusion.

[0039] According to the fusion device 20 of the first embodiment, further, the position of the convex portion 3 and the irradiation position of the laser light are measured non-contactly, and the temperature of the surface of the plate-shaped material 2 on the side opposite to the convex portion 3 is monitored. Then, the irradiation unit 23 is controlled based on the measurement result of these irradiation positions and the temperature monitoring result. Therefore, it becomes possible to easily make the irradiation position of the laser light follow the contact portion 28.

[0040] [Second Embodiment] Next, a second embodiment of the present disclosure will be described with reference to the drawings. This second embodiment is different from the first embodiment described above in the configuration of the pressing portion. Therefore, in this second embodiment, the same reference numerals are given to the same parts as those in the first embodiment, and redundant descriptions are omitted. FIG. 5 is a perspective view showing a schematic configuration of a fusion device according to the second embodiment of the present disclosure. FIG. 6 is an enlarged view of a main part of FIG. 5. As shown in FIGS. 5 and 6, the fusion device 120 of the second embodiment includes a conveyance unit 21, a pressing unit 122, and an irradiation unit 23. Since the conveyance unit 21 and the irradiation unit 23 have the same configuration as those in the first embodiment described above, detailed descriptions thereof are omitted.

[0041] The pressing unit 122 presses the laminate 10 conveyed by the conveyance unit 21 from above. The pressing unit 122 of this second embodiment includes a pressing unit main body 41 and an air supply source (gas supply source) 42 (see FIG. 6) that supplies gas as a working fluid to the pressing unit main body 41.

[0042] The pressing part main body 41 is in contact with the anti-fusion surface 27 which is the upper surface of the plate-like material 2 located above, and is provided so as to be slidable with respect to this anti-fusion surface 27. The pressing part main body 41 is formed so as to extend from the position of one edge 24a in the width direction Dw of the conveyance path 24 to the position of the other edge 24b. The pressing part main body 41 has an internal space 44 having an opening 43 that opens toward the plate-like material 2 side in the vertical direction Dh. Gas can be supplied to this internal space 44 from the outside. The pressing part main body 41 of the present embodiment is biased toward the anti-fusion surface 27 side by, for example, an elastic member or the like.

[0043] The air supply source 42 supplies at least a gas (for example, 0.5 MPa to 1.0 MPa) at a pressure higher than atmospheric pressure to the internal space 44 of the pressing part main body 41. Examples of the gas supplied by the air supply source 42 include inert gas and dry air.

[0044] As shown in FIG. 6, the pressing part main body 41 includes an upstream side wall 46 that partitions the internal space 44, a downstream side wall 47, an end wall 48 (see FIG. 5), and an irradiation side wall 49. The upstream side wall 46 extends upward from the anti-fusion surface 27 of the plate-like material 2 located above. The upstream side wall 46 is located upstream of the most upstream position in the conveyance direction Dt of the irradiation range of the laser light by the irradiation part 23. The upstream side wall 46 of the present embodiment is located slightly upstream of the most upstream position in the conveyance direction Dt of the irradiation range. An inlet part 50 for supplying the gas from the air supply source 42 to the internal space 44 is formed in the upstream side wall 46 of the present embodiment. Note that the inlet part 50 is not limited to being formed in the upstream side wall 46. The inlet part 50 may be provided in, for example, the downstream side wall 47 or the end wall 48.

[0045] The downstream side wall 47 has the same configuration as the upstream side wall 46 and extends upward from the anti-fusion surface 27 of the plate-like material 2. The downstream side wall 47 is located downstream of the most downstream position of the irradiation range in the conveyance direction Dt. The downstream side wall 47 of the present embodiment is located slightly downstream of the most downstream position of the irradiation range in the conveyance direction Dt. The downstream side wall 47 and the above-described upstream side wall 46 each have a sealing material 51 that contacts the anti-fusion surface 27 and is slidable in the conveyance direction Dt with respect to the anti-fusion surface 27. Examples of these sealing materials 51 include a grand packing and a brush seal. Although the configuration in which the sealing material 51 contacts and slides with respect to the anti-fusion surface 27 has been described, in order to suppress wear of the sealing material 51, for example, the sealing material 51 may have a rotatable roller structure similar to the pressing roller 26 of the first embodiment.

[0046] The end walls 48 (see FIG. 5) are formed so as to block the internal space 44 of the pressing unit main body 41 from the outside in the width direction Dw of the conveyance path 24. The end walls 48 are formed on one side and the other side (not shown) in the width direction Dw, respectively. In other words, the end wall 48 on one side in the width direction Dw extends from the end edge on one side in the width direction Dw of the upstream side wall 46 to the end edge on one side in the width direction Dw of the downstream side wall 47, and the end wall 48 on the other side in the width direction Dw (not shown) extends from the end edge on the other side in the width direction Dw of the upstream side wall 46 to the end edge on the other side in the width direction Dw of the downstream side wall 47. These two end walls 48 are formed in a range from the position of the irradiation side wall 49 to the position of the sealing material 51 in the vertical direction Dh. The end wall 48 of the present embodiment is formed in a flat plate shape extending in the conveyance direction Dt.

[0047] At least one of the two end walls 48 of one pressing unit main body 41 is formed of a glass, synthetic resin, or the like that can transmit light. Thereby, it is possible to acquire an image of the position of the convex portion 3 and the irradiation position of the laser light from the outside of the pressing unit main body 41. That is, by providing the end wall 48 that can transmit light, it is possible to measure the position of the convex portion 3 and the irradiation position of the laser light by photographing from the outside of the pressing unit main body 41 with the position measuring device 32.

[0048] The irradiation side wall 49 is provided at a position facing the anti-fusion surface 27 of the plate-like material 2. In other words, in the vertical direction Dh, it is provided between the anti-fusion surface 27 of the plate-like material 2 and the irradiation unit main body 31. The irradiation side wall 49 is formed so as to block the internal space 44 of the pressing unit main body 41 from the side where the irradiation unit main body 31 is arranged. Specifically, the irradiation side wall 49 extends from the edge on the side opposite to the sealing material 51 of the upstream side wall 46 to the edge on the side opposite to the sealing material 51 of the downstream side wall 47. The irradiation side wall 49 is made transmissive to the laser light irradiated by the irradiation unit 23, similar to the pressing plate member 25 of the first embodiment. The irradiation side wall 49 of the present embodiment has a flat plate shape extending parallel to the anti-fusion surface 27 of the plate-like material 2 of the laminate 10.

[0049] Similar to the first embodiment, the fusion device 120 of the present embodiment includes a plurality of combinations of the above-described irradiation unit 23 and pressing unit 122 at intervals in the conveyance direction Dt. The first irradiation unit 23U and the second irradiation unit 23D of the present embodiment irradiate laser light along different contact portions 28 of the same laminate 10. Although the case of providing two irradiation units 23 has been described, similar to the first embodiment, three or more irradiation units 23 may be provided to heat different contact portions 28 respectively.

[0050] (Function and effect) According to the fusion device 120 of the second embodiment, since the gas supplied to the internal space 44 of the pressing unit main body 41 can press the plate-like material 2 located above from above, similar to the first embodiment, it is possible to heat the contact portion 28 by the irradiation unit 23 while pressing the laminate 10 by the pressing unit 122. Furthermore, since the pressing plate member 25 of the first embodiment becomes unnecessary, the device for handling the pressing plate member 25 becomes unnecessary, and it becomes possible to easily perform the fusion of the laminate 10.

[0051] [Third Embodiment] Next, a third embodiment of the present disclosure will be described with reference to the drawings. The configuration of the pressing unit in this third embodiment is different from that of the first embodiment described above. Therefore, in this third embodiment, the same reference numerals are given to the same parts as those in the first embodiment, and redundant descriptions are omitted. FIG. 7 is a perspective view showing a schematic configuration of the fusion device according to the third embodiment of the present disclosure. As shown in FIG. 7, the fusion device 220 of the third embodiment includes a transport unit 21, a pressing unit 222, and an irradiation unit 23. Since the transport unit 21 and the irradiation unit 23 have the same configurations as those in the above-described first and second embodiments, detailed descriptions thereof are omitted.

[0052] The pressing unit 22 presses the laminate 10 conveyed by the transport unit 21 from both sides in the vertical direction Dh. The pressing unit 222 of this third embodiment includes a first pressing member 54 and a second pressing member 55.

[0053] The first pressing member 54 presses the laminate 10 from above, which is the side where the laser light is irradiated in the vertical direction Dh of the laminate 10. The first pressing member 54 has the same configuration as the pressing roller 26 of the first embodiment, and has a columnar shape that can rotate around a rotation axis O1 extending in the second direction D2. The first pressing member 54 is further biased downward to press the laminate 10 from above. A plurality of the first pressing members 54 are provided in one pressing unit 222. These plurality of first pressing members 54 are respectively arranged on the upstream side Dtu and the downstream side Dtd in the transport direction with respect to the laser light irradiation range by the irradiation unit 23.

[0054] Here, FIG. 7 illustrates a case where one pressing unit 222 includes two first pressing members 54, but the number of the first pressing members 54 is not limited to two. For example, two or more first pressing members 54 may be provided on each of the upstream side Dtu and the downstream side Dtd in the transport direction within a range where the laser light can follow the contact portion 28.

[0055] The second pressing member 55 presses the laminate 10 from below, which is on the opposite side of the first pressing member 54 in the vertical direction Dh. The second pressing member 55 has a columnar shape that is rotatable around a rotation axis O2 extending in the width direction Dw of the conveyance path 24. The second pressing member 55 is biased toward the laminate 10. This second pressing member 55 is provided at a position between the two first pressing members 54 in the conveyance direction Dt. The second pressing member 55 of this third embodiment is provided at the center of the first pressing member 54 in the conveyance direction Dt. The second pressing member 55 presses the laminate 10 from the side of the conveyance unit 21, that is, from the side opposite to the irradiation unit 23. More specifically, the second pressing member 55 of this third embodiment presses the lower plate-like member 2 of the two plate-like members 2 arranged so as to sandwich the three-dimensional structural material 1 upward, which is the side of the irradiation unit 23.

[0056] (Function and effect) According to the fusion device 220 of the third embodiment, by pressing the laminate 10 with the first pressing member 54 and pressing the laminate 10 with the second pressing member 55, the laminate 10 can be pressurized from both sides in the vertical direction Dh. Therefore, similar to the first embodiment, while pressurizing the laminate 10 with the pressurizing unit 222, it is possible to heat the contact portion 28 with the irradiation unit 23. Furthermore, in the fusion device 220 of the third embodiment, since it is not necessary to provide the pressing plate member 25 of the first embodiment or the air supply source 42 of the second embodiment, it is advantageous in that it can suppress the complication of the device configuration.

[0057] [Fourth Embodiment] Next, a fourth embodiment of the present disclosure will be described with reference to the drawings. This fourth embodiment is different from the above-described first embodiment in the conveyance direction of the laminate and the configuration of the irradiation unit. Therefore, in this fourth embodiment, the same reference numerals are given to the same parts as in the first embodiment, and redundant explanations are omitted. FIG. 8 is a perspective view showing a schematic configuration of a fusion device according to the fourth embodiment of the present disclosure. As shown in FIG. 8, the fusion device 320 of the fourth embodiment includes a conveyance unit 21, a pressurizing unit 22, and an irradiation unit 323.

[0058] In this fourth embodiment, similar to the first embodiment, one three-dimensional structural material 1 is laminated and fused so as to be sandwiched between two plate-like materials 2. The three-dimensional structural material 1 of this fourth embodiment is also formed in a corrugated shape with a shape having a plurality of convex portions 3, similar to the first embodiment. This three-dimensional structural material 1 includes a first edge 4 and a second edge 5 that are parallel to each other in a plan view, and a plurality of convex portions 3 are formed side by side in a first direction D1, which is the direction in which the first edge 4 and the second edge 5 extend. These plurality of convex portions 3 are formed in the same manner as in the first embodiment and extend in a second direction D2. The plate-like material 2 of this fourth embodiment is also formed in a sheet shape with a substantially constant thickness, similar to the first embodiment.

[0059] The conveying unit 21 conveys a laminate 310 in which the three-dimensional structural material 1 and the plate-like material 2 are laminated as a workpiece. The conveying unit 21 conveys the laminate 310 in a direction perpendicular to the vertical direction Dh of the laminate 310. And, among the two plate-like materials 2, the plate-like material 2 located above is disposed on the convex portion 3 that protrudes upward and is formed on the three-dimensional structural material 1.

[0060] The conveying unit 21 of this fourth embodiment conveys the laminate 310 in a posture in which the third direction D3 of the laminate 10 is made to coincide with the vertical direction Dh, and further, the second direction D2 in which the convex portion 3 of the three-dimensional structural material 1 extends is made to coincide with the conveying direction Dt. The conveying unit 21 of this fourth embodiment conveys the laminate 310 intermittently. That is, a plurality of laminates 310 arranged at intervals in the conveying direction Dt are sequentially conveyed from the upstream side Dtu in the conveying direction to the downstream side Dtd in the conveying direction. Note that, similar to the first embodiment, the conveying unit 21 may convey the laminate 310 continuously.

[0061] The pressing unit 22 presses the laminate 310 conveyed by the conveying unit 21 from above. The pressing unit 22 includes a pressing plate member 25 and a pressing roller (pressing member) 26, similar to the first embodiment.

[0062] The pressing plate member 25 is conveyed by the conveying unit 21 at an interval in the conveying direction Dt together with the laminate 10. The pressing plate member 25 is made transmissive to the laser light irradiated by the irradiation unit 323 and is arranged to cover the entire surface of the anti-fusion surface 27 of the plate-like material 2 located above. The shape of the pressing plate member 25 illustrated in this fourth embodiment is substantially the same rectangular shape as the shape of one laminate 310 in a plan view. Then, the pressing plate member 25 is laminated on the laminate 310, and in a state where the position of the outer edge of one laminate 310 coincides with the outer edge of one pressing plate member 25 in a plan view, the conveying unit 21 conveys the laminate 310 and the pressing plate member 25. Similar to the first embodiment, the pressing plate member 25 of this fourth embodiment is, for example, after being conveyed to the most downstream in the conveying direction Dt, moved to the most upstream in the conveying direction Dt by a glass conveying device (not shown) or an operator and reused.

[0063] The pressing roller 26 presses the laminate 310 arranged on the conveying unit 21 downward from above through the pressing plate member 25. The pressing roller 26 has the same configuration as that of the first embodiment, and a plurality of pressing rollers 26 are provided at intervals in the conveying direction Dt. These plurality of pressing rollers 26 are biased toward the pressing plate member 25 side. Here, since the pressing roller 26 of this fourth embodiment presses the pressing plate member 25, even if one of the pressing rollers 26 provided on the upstream side Dtu and the downstream side Dtd in the conveying direction is disengaged from the pressing plate member 25 and is in a position where it cannot press the pressing plate member 25, the other pressing roller 26 presses the pressing plate member 25, so that the anti-fusion surface 27 of the laminate 310 can be uniformly pressed.

[0064] The irradiation unit 323 irradiates laser light that heats the contact portion 28 where the convex portion 3 and the plate-like material 2 are in contact with each other among the laminate 310 being conveyed by the conveyance unit 21. The irradiation unit 323 irradiates laser light from above toward the anti-fusion surface 27 of the laminate 310. Then, the irradiation unit 323 irradiates laser light following the position of the contact portion 28. The irradiation unit 323 of this fourth embodiment includes an irradiation unit main body 331, a position measurement device 32, a temperature monitoring device 33, and a control device 34.

[0065] Here, the irradiation unit 323 uses laser light as the light beam that heats the contact portion 28, similar to the irradiation unit 23 of the first embodiment. Laser light from a laser oscillation device is transmitted to the irradiation unit via the transmission fiber 35. On the other hand, the irradiation direction of the laser light of the irradiation unit 323 of this fourth embodiment is different from that of the irradiation unit 23 of the first embodiment.

[0066] The irradiation unit main body 331 moves the optical axis so as to follow the contact portion 28 that moves from the upstream side Dtu in the conveyance direction to the downstream side Dtd in the conveyance direction. In this fourth embodiment, the convex portion 3 extends in the conveyance direction Dt, and the contact portion 28 forms a straight line extending in the conveyance direction Dt when viewed from above. The irradiation unit main body 331 scans the laser light transmitted from the laser oscillation device by the transmission fiber 35 along the conveyance direction Dt along the contact portion 28 while following the contact portion 28 that moves to the downstream side Dtd in the conveyance direction. In the irradiation unit main body 331, as the configuration for making the laser light follow the contact portion 28 that moves in the conveyance direction Dt and the configuration for scanning the laser light in the conveyance direction Dt, a galvano mirror can be exemplified respectively.

[0067] One irradiation unit 323 includes a plurality of irradiation unit main bodies 331 arranged side by side in the width direction Dw and the conveyance direction Dt of the conveyance path 24. In this fourth embodiment, one irradiation unit 323 includes a total of four irradiation unit main bodies 331. Specifically, the four irradiation unit main bodies 331 in one irradiation unit 323 are arranged in two rows in the conveyance direction Dt on both sides in the width direction Dw of the conveyance path 24. And, the irradiation unit main body 331 arranged on the upstream side Dtu in the conveyance direction is arranged with a shift in the width direction Dw of the conveyance path 24 with respect to the irradiation unit main body 331 arranged on the downstream side Dtd in the conveyance direction. The regions irradiated (in other words, scanned) with laser light by these plurality of irradiation unit main bodies 331 are regions with a predetermined width in the second direction D2 (in other words, the conveyance direction Dt) of the laminate 10, respectively. In this fourth embodiment, one irradiation unit main body 331 can irradiate laser light to a predetermined number (for example, three) of contact portions 28 arranged in the width direction Dw of the conveyance path 24. Note that the arrangement of the plurality of irradiation unit main bodies 331 is not limited to the arrangement shown in FIG. 8.

[0068] The scanable range As (in other words, the irradiation range) in which the irradiation unit main body 331 can scan the laser light in the conveyance direction Dt has a predetermined length in the conveyance direction Dt. The irradiation unit main body 331 irradiates and heats a predetermined number of contact portions 28 arranged in the width direction Dw of the conveyance path 24 within this scanable range As. For example, focusing on one irradiation unit main body 331, when the heating of the first contact portion 28 is completed, the heating shifts to the adjacent second contact portion 28, and when the heating of the second contact portion 28 is completed, the heating shifts to the third contact portion 28, and when the heating of the third contact portion 28 is completed, the heating returns to the first contact portion 28, etc. The irradiation unit main body 331 heats the entire region in the conveyance direction Dt of each contact portion 28 while sequentially changing the contact portion 28 irradiated with the laser light.

[0069] Similar to the first embodiment, the fusion device 320 includes a plurality of irradiation units 323 spaced apart in the conveyance direction Dt. The fusion device 320 of this fourth embodiment includes a first irradiation unit 323U and a second irradiation unit 323D as the plurality of irradiation units 323. These first irradiation unit 323U and second irradiation unit 323D irradiate laser light along the contact portions 28 of different laminate bodies 310 adjacent to each other in the conveyance direction Dt. By doing so, similar to the first embodiment, it becomes possible to increase the conveyance speed of the laminate body 310 while sufficiently heating all the contact portions 28 as compared with the case of using only one irradiation unit 323.

[0070] In the description of the above fourth embodiment, the configuration in which the contact portion 28 is heated by irradiating the laminate body 310 with laser light while scanning the laser light in the conveyance direction Dt has been described. However, the configuration is not limited to scanning the laser light in the conveyance direction Dt. For example, similar to the irradiation unit main body 31 of the first embodiment, a line beam can also be used as the laser light. In this case, the line beam may be irradiated onto the laminate body 310 so as to extend linearly in the conveyance direction Dt. Further, the length of this line beam in the conveyance direction Dt may be changed to be larger or smaller based on the temperature monitoring result of the contact portion 28. By making it possible to change the length of the line beam in the conveyance direction Dt in this way, for example, if the length of the line beam is expanded without reducing the conveyance speed, the heating time of the contact portion 28 can be lengthened. Therefore, it becomes possible to more quickly fuse the contact portion 28.

[0071] In addition, although the case of heating a plurality of contact portions 28 by one irradiation unit main body 331 has been described, one irradiation unit main body 331 may be used to heat one contact portion 28. Further, the laser light transmitted from the laser oscillation device may be branched so that a plurality of contact portions 28 can be irradiated with laser light simultaneously by one irradiation unit main body 331.

[0072] Furthermore, although the case of providing two irradiation units 323 has been described, three or more irradiation units 323 may be provided.

[0073] (Function and Effect) According to the fusion device 320 of the fourth embodiment described above, since the transport direction Dt of the laminate 310 can be made to coincide with the second direction D2 in which the convex portion 3 extends, when the irradiation range by the irradiation unit 323 is constant, as the laminate 310 is transported and moves, laser light can be irradiated over a wider range. Further, since the irradiation range of the laser light irradiated by the irradiation unit 323 extends in the transport direction Dt, laser light can be irradiated over an even wider range. Therefore, when the heat input energy to the contact portion 28 by the laser light is constant, the transport speed can be made higher. On the other hand, when the transport speed is constant, the contact portion 28 can be heated to a higher temperature. Therefore, it is possible to efficiently heat the contact portion 28.

[0074] [Fifth Embodiment] Next, a fifth embodiment of the present disclosure will be described with reference to the drawings. This fifth embodiment differs from the above-described fourth embodiment in the configurations of the irradiation unit and the pressing unit. Therefore, in this fifth embodiment, the same reference numerals are given to the same parts as in the fourth embodiment, and redundant explanations are omitted. FIG. 9 is a perspective view showing a schematic configuration of a fusion device according to the fifth embodiment of the present disclosure. As shown in FIG. 9, the fusion device 420 of the fifth embodiment includes a transport unit 21, a pressing unit 122, and an irradiation unit 423.

[0075] The transport unit 21 has the same configuration as the transport unit 21 of the fourth embodiment, and transports the laminate 310 in which the three-dimensional structural material 1 and the plate-like material 2 are laminated. The transport unit 21 of this fifth embodiment is different from the transport unit 21 of the fourth embodiment in that when transporting a plurality of laminates 310 that have been previously cut to a width dimension that can be transported by the transport unit 21, the laminates 310 adjacent to each other in the transport direction Dt are closely contacted and transported.

[0076] The pressing unit 122 presses the laminate 310 conveyed by the conveying unit 21 from above. The pressing unit 122 of this fifth embodiment has the same configuration as the pressing unit 122 of the second embodiment, and includes a pressing unit 122 extending in the width direction Dw of the conveyance path 24, and an air supply source (gas supply source) 42 (see FIG. 6) that supplies gas as an operating fluid to the pressing unit 122.

[0077] The pressing unit main body 41 contacts the anti-fusion surface 27 of the plate-like material 2 located above in the laminate 310. The pressing unit main body 41 has an internal space 44 having an opening 43 (see FIG. 6) that opens toward the anti-fusion surface 27. Gas can be supplied to this internal space 44 from the outside. The pressing unit main body 41 includes an upstream side wall 46, a downstream side wall 47, an end wall 48, and an irradiation side wall 49 that partition the internal space 44. The downstream side wall 47 and the upstream side wall 46 each have a sealing material 51 that contacts the anti-fusion surface 27.

[0078] In this fifth embodiment, a plurality of laminates 310 are conveyed in a close state. A seam S is formed between the laminates 310 adjacent to each other in the conveyance direction Dt. When a step is formed in this seam S, the sealing material 51 using a gasket or the like may be caught by the step and the conveyance of the laminate 310 by the conveying unit 21 may be stopped. Therefore, in this fifth embodiment, as the sealing material 51, a sealing material 51 having a rotatable roller structure is used. The radius of the sealing material 51 having this roller structure can be set to be twice or more the maximum value of the assumed step size. Note that, as long as it is a configuration that is not caught by the step, it is not limited to the sealing material 51 having a roller structure, and for example, a brush seal or the like may be used.

[0079] Similar to the fourth embodiment, the fusing device 420 of the fifth embodiment has a plurality of irradiation units 423 arranged at intervals in the conveyance direction Dt, including a first irradiation unit 423U provided on the upstream side Dtu in the conveyance direction and a second irradiation unit 423D provided on the downstream side Dtd in the conveyance direction.

[0080] The irradiation unit 423 irradiates laser light from above to heat the contact portion 28 of the laminate 310 being conveyed by the conveyance unit 21. Then, the irradiation unit 423 irradiates laser light following the moving contact portion 28 being conveyed. The irradiation unit 423 of this fifth embodiment includes an irradiation unit main body 431, a position measurement device 32 (not shown), a temperature monitoring device 33, and a control device 34 (not shown).

[0081] In this fifth embodiment, since a plurality of laminates 310 are conveyed closely in the conveyance direction Dt, the position of the convex portion 3 may be measured by a position measurement device 32 (not shown) at the most upstream portion in the conveyance direction Dt. In this case, the position measurement result of the convex portion 3 may be stored in the storage unit of the control device 34. Further, since the conveyance position of the laminate 310 can be obtained from the conveyance speed of the conveyance unit 21, when the laminate 310 for which the position of the convex portion 3 has been measured reaches the laser light irradiation position, the stored information of the position measurement result for that laminate 310 is read out, and laser irradiation is performed on the position of the contact portion 28 based on the stored information.

[0082] In this fifth embodiment, one irradiation unit 423 includes one irradiation unit main body 431. The irradiation unit main body 431 branches the laser light transmitted from a laser oscillation device (not shown) according to the number of convex portions 3 of the laminate 310 existing in the width direction Dw of the conveyance path 24, and while causing the branched laser light to follow the contact portion 28 of the conveyance body moving downstream in the conveyance direction Dtd, scans in the conveyance direction Dt along the contact portion 28. In this irradiation unit main body 431, as a configuration for causing the laser light to follow the contact portion 28 and a configuration for scanning the laser light in the conveyance direction Dt, a galvanometer mirror can be exemplified respectively.

[0083] The regions irradiated with laser light by the irradiation unit main body 431 are each regions with a predetermined width in the second direction D2 (in other words, the conveyance direction Dt) of the laminate 310. In this fifth embodiment, one branched laser light can irradiate laser light onto a predetermined number (for example, three) of contact portions 28 arranged in the width direction Dw of the conveyance path 24. Since the configuration of irradiating the contact portion 28 with laser light by the irradiation unit main body 431 of these fifth embodiments is the same as the configuration of irradiating laser light by each irradiation unit main body 331 of the fourth embodiment, detailed description thereof will be omitted.

[0084] In the description of the above fifth embodiment, a configuration has been described in which the contact portion 28 is heated by irradiating the anti-fusion surface 27 with laser light while scanning the laser light in the conveyance direction Dt. However, the configuration is not limited to scanning the laser light in the conveyance direction Dt. For example, similar to the fourth embodiment, the above-described line beam can also be used as the laser light. In this case, the line beam may be irradiated onto the laminate 310 so as to linearly extend in the conveyance direction Dt. Further, the length of this line beam in the conveyance direction Dt may be changed in magnitude based on the temperature monitoring result of the contact portion 28.

[0085] (Function and Effect) According to the fusion bonding apparatus of the above fifth embodiment, while conveying the laminate 310 with the convex portion 3 extending in the conveyance direction Dt, similar to the second embodiment, the plate-like material 2 can be pressed from the side opposite to the convex portion 3 of the three-dimensional structural material 1 by the gas supplied into the internal space 44 of the pressing main body. Further, since the pressing plate member 25 of the fourth embodiment becomes unnecessary, an apparatus for handling the pressing plate member 25 becomes unnecessary, and it becomes possible to easily perform the fusion bonding of the laminate 310. Furthermore, since one irradiation unit main body 431 can irradiate and heat laser light on all the contact portions 28 of the laminate 310 conveyed by the conveying unit 21, while having a configuration of pressing the laminate 310 with gas, compared with the case where a plurality of irradiation unit main bodies 431 are arranged side by side in the conveyance direction Dt, it is possible to suppress the increase in the size of the pressing unit main body 41 or the increase in the number of pressing unit main bodies 41.

[0086] Furthermore, in the fifth embodiment, since the sealing material 51 having a rotatable roller structure is used, a joint S is formed between adjacent laminates 310 in the conveying direction Dt. Even when a step is formed in this joint S, the sealing material 51 can be prevented from being caught by the step. As a result, the three-dimensional structural material 1 and the plate-shaped material 2 can be smoothly fused together.

[0087] [Modifications of Each Embodiment] Next, modifications of the above-described embodiments will be described with reference to the drawings. In the description of the modifications of each embodiment, the case where the configuration of this modification is applied to the fusion device 120 of the second embodiment will be described as an example, but it is applicable to all of the above-described embodiments and all modifications. Therefore, the same reference numerals are given to the same parts as those in the above-described embodiments, and redundant descriptions are omitted. FIG. 10 is a perspective view showing a schematic configuration of a fusion device in a modification of each embodiment of the present disclosure. As shown in FIG. 10, the fusion device 520 of the modification of each embodiment includes a conveying unit 21, a pressing unit 22, an irradiation unit 23, and a preheating heater 60.

[0088] The preheating heater 60 raises the temperature of the laminate 10 before heating by the irradiation unit 23. More specifically, the preheating heater 60 raises (in other words, preheats) the temperature of the laminate 10 in a temperature range lower than the melting temperature at which the synthetic resin constituting the laminate 10 melts (for example, 200° C. or lower). In the modification of each embodiment, the preheating heater 60 includes a front-side preheating heater 61 that heats the front surface of the laminate 10 and a back-side preheating heater 62 that heats the back surface of the laminate 10. Here, the front surface is the surface facing upward (in other words, the anti-fusion surface 27) among the surfaces on both sides in the vertical direction Dh of the laminate 10, where the irradiation unit 23 is located. The back surface is the surface facing downward among the surfaces on both sides in the vertical direction Dh of the laminate 10.

[0089] The front-side preheating heaters 61 are respectively arranged on the upstream side Dtu in the conveying direction of the pressing unit 22. On the other hand, the backside preheating heater 62 is disposed in a range from the most upstream position in the conveyance direction Dt of the conveyance path 24 to the position of the most downstream pressing portion 22 in the conveyance direction Dt among the pressing portions 22. Note that although the case where the backside preheating heater 62 is continuously formed in the conveyance direction Dt is exemplified, a plurality of backside preheating heaters 62 may be arranged side by side in the conveyance direction Dt. Further, when preheating the laminate 10 by the preheating heater 60 described above, the pressing portion 22 may be provided with a heat-resistant sealing material as the sealing material 51 that contacts the laminate 10.

[0090] According to the modifications of the above embodiments, by preheating the laminate 10 with the preheating heater 60, the heating time by the irradiation unit 23 can be shortened. Therefore, the time required for fusing the laminate 10 can be shortened and the productivity can be improved. Further, by preheating the laminate 10, the output of the laser light irradiated from the irradiation unit 23 can be suppressed low. Therefore, it becomes possible to relax the requirements for the device specifications related to the laser light irradiation, leading to a simplification of the device configuration.

[0091] [Other Embodiments] The present disclosure is not limited to the configurations of the above-described embodiments and modifications, and design changes can be made without departing from the gist thereof. For example, in each of the above-described embodiments, the case where the irradiation units 23, 323, 423 irradiate the laminate 10, 310 with laser light has been described. However, for example, light rays such as those from a halogen lamp may be condensed and used as the light rays for heating the contact portion 28.

[0092] Further, in each of the above-described embodiments and modifications, the case where the synthetic resin constituting the plate-like material 2 and the three-dimensional structural material 1 does not transmit the light rays irradiated by the irradiation unit 23 has been described. However, as the synthetic resin constituting the plate-like material 2, a synthetic resin that transmits the light rays irradiated by the irradiation unit 23 may be used.

[0093] Furthermore, in each of the above-described embodiments and each modification, the case where the convex portion 3 of the three-dimensional structural material 1 is a ridge extending linearly in plan view has been described. However, the shape of the convex portion 3 of the three-dimensional structural material 1 is not limited to the above shape. For example, it may be a three-dimensional structural material in which the convex portion 3 is formed intermittently or partially. Also, although the case where the convex portion 3 of the three-dimensional structural material 1 is a convex curved surface has been exemplified, it is not limited to a curved surface. Furthermore, the three-dimensional structural material 1 may have a pin-shaped convex portion.

[0094] In each of the above-described embodiments and each modification, the case where the plate-like material 2 is formed in a sheet shape with a constant thickness has been described. However, the shape of the plate-like material 2 is not limited to a constant thickness, and for example, it may have a shape with a different thickness in part, such as having concave portions such as grooves or through holes such as slits formed therein.

[0095] The configuration of the irradiation unit 423 of the fifth embodiment described above is also applicable as the irradiation unit 323 of the fourth embodiment.

[0096] In each of the above-described embodiments and each modification, the case where the transport unit 21 transports the laminate 10 in a posture in which the third direction D3 of the laminate 10 coincides with the vertical direction Dh (specifically, the vertical direction) has been exemplified. However, the third direction D3 of the laminate 10 transported by the transport unit 21 is not limited to the case where it coincides with the vertical direction Dh (specifically, the vertical direction). For example, the transport unit 21 may transport the laminate 10 in a posture in which the third direction D3 does not coincide with the vertical direction Dh (specifically, the vertical direction), for example, in a posture inclined with respect to the horizontal direction in the transport direction Dt or the width direction Dw.

[0097] In the above-described first embodiment, the case where the pressing plate member 25 has a width dimension that is the same as or slightly larger than the dimension of the laminate 10 in the second direction D2 has been described. Further, in the fourth and fifth embodiments, the case where the shape of the pressing plate member 25 in plan view is substantially the same rectangular shape as the shape of one laminate 310 in plan view has been described. However, the size and the shape in plan view of the pressing plate member 25 are not limited to the above dimensions and shapes. For example, the width dimension of the pressing plate member 25 may be formed to be smaller than the dimension of the laminate 10 in the second direction D2, or the shape of the pressing plate member 25 in plan view may be made into a shape different from a rectangular shape. Further, although the case where the pressing plate member 25 has a dimension slightly larger than the dimension of the laminate 10 in the second direction D2 has been exemplified, it is not limited to a slightly larger dimension, and it may simply be a larger dimension.

[0098] In each of the above-described embodiments and each modification, the case where one fusing device 20, 120, 220, 320, 420, 520 includes two irradiation units 23, 323, 423 at intervals in the conveyance direction Dt has been described. However, it is not limited to the case of including two irradiation units 23, 323, 423. For example, three or more irradiation units 23, 323, 423 may be provided to heat different contact portions 28, or only one irradiation unit 23, 323, 423 may be provided to heat the contact portion 28.

[0099] In each of the above-described embodiments and each modification, the case where the temperature monitoring device 33 monitors the temperature of the anti-fusion surface 27 in a non-contact manner has been described. However, the temperature monitoring device 33 is not limited to a configuration that monitors the temperature in a non-contact manner. Further, the arrangement of the temperature monitoring device 33 is not limited to the arrangements in the above-described embodiments and each modification. The temperature monitoring device 33 may be arranged, for example, above the laminate 10. Further, the temperature monitoring device 33 is not limited to the case where only one is provided for one irradiation unit 23, 323, 423. For example, a plurality of temperature monitoring devices 33 may be arranged for one irradiation unit 23, 323, 423.

[0100] In each of the above-described embodiments and each modification, the case where the temperature monitoring device 33 monitors the temperature of the irradiation position irradiated with the laser light has been described. However, the temperature monitored by the temperature monitoring device 33 is not limited to the irradiation position. The temperature monitored by the temperature monitoring device 33 may be, for example, the temperature of a predetermined position shifted downstream in the conveyance direction Dtd from the irradiation position. Here, the temperature of the predetermined position is a temperature correlated with the temperature of the irradiation position. In this case, the temperature of the irradiation position can be obtained from the temperature of the predetermined position using a map, table, mathematical formula, etc. of the temperature of the irradiation position and the temperature of the predetermined position obtained in advance by experiments, simulations, etc. That is, in the second embodiment and the fifth embodiment described above, the case where the end wall 48 is light-transmissive has been described. However, when the temperature of the irradiation position is not monitored from outside the pressurizing unit main body 41, an end wall 48 that is not light-transmissive may be used. Further, the range in which the temperature monitoring device 33 monitors the temperature is not limited to the entire area of the irradiation position. For example, a part of the irradiation position may be used as a representative point for temperature monitoring, and the temperature of the remaining part may be estimated based on the monitoring result.

[0101] In the above-described embodiment, the case where the three-dimensional structural material 1 does not transmit the laser light has been described as an example. However, the three-dimensional structural material 1 that transmits the laser light may also be used. Also, the case where the conveyance unit 21 is a belt conveyor has been described as an example. However, as the conveyance unit 21, a configuration in which the laminate 10 and the pressing plate member 25 are sandwiched between driving rollers from both sides in the thickness direction and sent downstream in the conveyance direction Dtd can also be exemplified. Furthermore, the case where the pressing plate member 25 is arranged so as to cover the entire surface of the anti-fusion surface 27 has been described. However, the present invention is not limited to this configuration, and the pressing plate member 25 only needs to cover at least the portion to be fused. For example, a gap may be formed between the pressing plate member 25 and the anti-fusion surface except for the portion to be fused.

[0102] <Supplementary Note> The fusion device described in the embodiment is grasped as follows, for example.

[0103] (1) The fusion devices 20, 120, 220, 320, 420, 520 according to the first aspect are formed from a material containing synthetic resin, extend in a first direction D1 and a second direction D2 intersecting the first direction D1, and have a three-dimensional structural material 1 having a convex portion 3 protruding to one side of a third direction D3 intersecting at least the first direction D1 and the second direction D2, and a plate-shaped material 2 formed from a material containing synthetic resin, extending in the first direction D1 and the second direction D2, and disposed on one side of the three-dimensional structural material 1 in the third direction D3 and contacting the convex portion protruding to one side of the third direction D3. The fusion device fuses the plate-shaped material 2 with the three-dimensional structural material 1, and includes a conveyance unit 21 that conveys a laminate 10 in which the plate-shaped material 2 is laminated on one side and the other side of the three-dimensional structural material 1 in the third direction D3, a pressing unit 22 that presses the laminate 10 conveyed by the conveyance unit 21 to press the plate-shaped material 2 disposed on one side of the third direction D3 against the convex portion 3 protruding to one side of the third direction D3, and an irradiation unit 23 that irradiates a light beam that heats the contact portion 28 following the contact portion 28 where the convex portion 3 protruding to one side of the third direction D3 in the laminate 10 pressed by the pressing unit 22 contacts the plate-shaped material 2 disposed on one side of the third direction D3 from one side of the third direction D3. Examples of the synthetic resin include polyamide, PEEK, etc. Examples of the material containing synthetic resin include composite materials such as thermoplastic CFRP. By configuring in this way, when fusing the three-dimensional structural material 1 having a plurality of convex portions 3 and the plate-shaped material 2 laminated on the three-dimensional structural material 1, while the laminate 10 of the three-dimensional structural material 1 and the plate-shaped material 2 is being conveyed by the conveying unit 21, the irradiation unit 23 irradiates light rays from one side in the third direction D3, and the convex portion 3 protruding to one side in the third direction and the plate-shaped material 2 disposed on one side in the third direction D3 of the three-dimensional structural material 1 can be heated. Further, when heating the contact portion 28, the plate-shaped material 2 disposed on one side in the third direction D3 can be pressed against the convex portion 3 disposed on one side in the third direction D3 by the pressing unit 22. Also, since the light rays of the irradiation unit 23 follow the contact portion 28, while the laminate 10 is being conveyed by the conveying unit 21, the three-dimensional structural material 1 and the plate-shaped material 2 can be fused at the contact portion 28 where the convex portion 3 protruding to one side in the third direction D3 and the plate-shaped material 2 disposed on one side in the third direction D3 are in contact with each other. Therefore, regardless of whether the plate-shaped material 2 is light-transmissive or not, it is possible to fuse the three-dimensional structural material 1 and the plate-shaped material 2 without disposing an intermediate material between the convex portion 3 and the plate-shaped material 2. Therefore, it is possible to suppress the complication of the fusing operation. Also, since the laser light is not irradiated to the portion that does not require heating, it is possible to suppress the occurrence of the influence of unnecessary heating on the three-dimensional structural material 1 and the plate-shaped material 2.

[0104] (2) The fusing device 20, 320 according to the second aspect is the fusing device of (1), wherein the pressing unit 22 includes a pressing plate member 25 formed in a plate shape that is capable of transmitting the light rays and extends in the first direction D1 and the second direction D2 to cover the laminate 10 from one side in the third direction D3, and a pressing member 26 that presses the pressing plate member 25 from one side in the third direction D3. Examples of the pressing plate member 25 include plate glass. Examples of the pressing member 26 include a pressing roller. Thereby, it is possible to reduce the local application of the pressing force by the pressing member 26 to the laminate 10, and thus it is possible to suppress the deformation of the laminate 10.

[0105] (3) The fusion device according to the third aspect is the fusion device of 20,320, (2), and the pressing member 26 is a rotatable pressing roller 26. By pressing the pressing plate member 25 with such a rotatable pressing roller 26, the friction between the pressing roller 26 and the pressing plate member 25 can be reduced. Therefore, it is possible to suppress the conveyance of the pressing plate member 25 from being inhibited, or the surface of the pressing plate member 25 from being soiled or damaged, thereby changing the light transmittance.

[0106] (4) The fusion device 120,520 according to the fourth aspect is the fusion device of (1), and the pressing portion 122 has an internal space 44 that opens toward the plate-like material 2, and includes a pressing portion main body 41 that contacts the plate-like material 2 from one side in the third direction D3, and a gas supply source 42 that supplies gas to the internal space 44 of the pressing portion main body 41. The pressing portion main body 41 includes an irradiation side wall 49 that is transmissive to the light rays. Examples of the gas supply source 42 include an air supply source, a supply source that supplies an inert gas, and a supply source that supplies dry air. With such a configuration, the plate-like material 2 can be pressed from one side in the third direction D3 of the three-dimensional structural material 1 by the gas supplied to the internal space 44 of the pressing portion main body 41. Therefore, it becomes possible to heat the contact portion 28 by the irradiation portion 23 while pressing the laminate 10 by the pressing portion 22. Furthermore, since the pressing plate member 25 becomes unnecessary, a device for handling the pressing plate member 25 becomes unnecessary, and it becomes possible to easily perform the fusion of the laminate 10.

[0107] (5) The fusion device 220 according to the fifth aspect is the fusion device of (1), and the pressing portion 222 includes a first pressing member 54 that presses the laminate 10 from one side in the third direction D3, and a second pressing member 55 that presses the laminate 10 from the other side in the third direction D3. As a result, when the laminate 10 is pressed by the first pressing member 54 and also pressed by the second pressing member 55, the laminate 10 can be pressurized from both sides, i.e., one side and the other side in the third direction D3. Therefore, it becomes possible to heat the contact portion 28 by the irradiation unit 23 while pressurizing the laminate 10 by the pressurizing unit 22. Further, since there is no need to provide the pressing plate member 25 and the gas supply source 42, it is possible to suppress the complication of the device configuration.

[0108] (6) The fusion bonding apparatuses 20, 120, 220, 520 according to the sixth aspect are any one of the fusion bonding apparatuses of (1) to (5), wherein the three-dimensional structural material 1 has a corrugated plate shape including a plurality of the convex portions 3 extending in the second direction D2, the conveying unit 21 conveys the laminate 10 in the first direction D1, and the irradiation unit 23 irradiates the light along the convex portions 3 extending in the second direction D2. As a result, even when the laminate 10 is conveyed in the first direction D1 intersecting the second direction D2 in which the convex portion 3 extends, it becomes possible to efficiently heat the contact portion 28 by the irradiation unit 23 while conveying the laminate 10.

[0109] (7) The fusion bonding apparatuses 320, 420 according to the seventh aspect are the fusion bonding apparatuses of (3) or (4), wherein the three-dimensional structural material 1 has a corrugated plate shape including a plurality of the convex portions 3 extending in the first direction D1, the conveying unit 21 conveys the laminate 10 in the second direction D2, and the irradiation unit 23 irradiates the light along the convex portions 3 extending in the first direction D1. As a result, when the laminate 10 is conveyed in the first direction D1 in which the convex portion 3 extends, it becomes possible to efficiently heat the contact portion 28 by the irradiation unit 23 while conveying the laminate 10.

[0110] (8) The fusion devices 20, 120, 220, 320, 420, 520 according to the eighth aspect are any one of the fusion devices from (1) to (7), wherein a plurality of the irradiation units 23 and the pressing units 22 are provided at intervals in the direction Dt in which the laminate 10 is conveyed by the conveying unit 21 among the first direction D1 and the second direction D2, and the plurality of irradiation units 23 irradiate and heat different contact portions 28 with light rays. Thereby, without reducing the conveyance speed, it is possible to sufficiently secure the irradiation time of the light ray to one contact portion 28. Therefore, it is possible to shorten the time required for fusing the three-dimensional structural material 1 and the plate-like material 2 and suppress a decrease in the reliability of fusion.

[0111] (9) The fusion devices 20, 120, 220, 320, 420, 520 according to the ninth aspect are any one of the fusion devices from (1) to (8), and include a position measuring device 32 that measures the position of the convex portion 3 disposed on one side in the third direction D3 and the irradiation position where the light ray is irradiated by the irradiation unit 23, a temperature monitoring device 33 that monitors the temperature of the anti-fusion surface 27 located on one side in the third direction D3 of the plate-like material 2 disposed on one side in the third direction, and a control device 34 that controls the irradiation unit 23 based on the measurement result by the position measuring device 32 and the monitoring result by the temperature monitoring device 33. Thereby, it becomes possible to easily cause the irradiation position of the laser beam to follow the contact portion 28.

[0112] (10) The fusion device 520 according to the tenth aspect is any one of the fusion devices from (1) to (9), and includes a preheating heater 60 that preheats the laminate 10. Thereby, the laminate 10 is preheated by the preheating heater 60, and the heating time by the irradiation unit 23 can be shortened. Therefore, the time required for fusing the laminate 10 can be shortened and the productivity can be improved.

Description of Reference Numerals

[0113] 1...Three-dimensional structural material 2...Plate-like material 3...Protrusion 4...First edge 5...Second edge 10...Laminate 20, 120, 220, 320, 420, 520...Fusing device 21...Conveyor section 22, 122, 222...Pressing section 23, 323, 423...Irradiation section 24...Conveyor path 25...Pressing plate member 25t...End face 26...Pressing roller 27...Anti-fusing surface 28...Contact section 31, 331...Irradiation section body 32...Position measuring device 33...Temperature monitoring device 34...Control device 35...Transmission fiber 36...First lens section 37...First galvanometer mirror 38...Second galvanometer mirror 39...Second lens section 41...Pressing section body 42...Air supply source 43...Opening 44...Internal space 46...Upstream side wall 47...Downstream side wall 48...End wall 49...Irradiation side wall 50...Inlet section 51...Sealing material 54...First pressing member 55...Second pressing member 60...Preheating heater 61...Surface side preheating heater 62...Back side preheating heater O1, O2...Rotation axis

Claims

1. A three-dimensional structural material formed from a material containing a synthetic resin, extending in a first direction and a second direction intersecting the first direction, and having a convex portion protruding on one side in at least a third direction intersecting the first direction and the second direction; and a plate-like material formed from a material containing a synthetic resin, extending in the first direction and the second direction, and disposed on one side in the third direction of the three-dimensional structural material and in contact with the convex portion protruding on one side in the third direction. A fusion device for fusing the plate-like material, comprising: A transport unit that transports a laminate in which the plate-like material is laminated on one side and the other side in the third direction with respect to the three-dimensional structural material; A pressing unit that presses the laminate being transported by the transport unit, pressing the plate-like material disposed on one side in the third direction against the convex portion protruding on one side in the third direction; An irradiation unit that irradiates, from one side in the third direction, a light beam that heats a contact portion in contact with the convex portion protruding on one side in the third direction of the laminate being pressed by the pressing unit and the plate-like material disposed on one side in the third direction, following the contact portion; Comprising; The pressing unit is: A pressing plate member that is formed in a plate shape so as to be transmissive to the light beam, extends in the first direction and the second direction, and covers the laminate from one side in the third direction; A pressing member that presses the pressing plate member from one side in the third direction; A fusion device comprising the above.

2. The pressing member is a rotatable pressing roller. The fusion device according to Claim 1.

3. A fusion device for fusing a three-dimensional structural material formed from a material containing a synthetic resin, extending in a first direction and a second direction intersecting the first direction, and having a convex portion protruding on one side in at least a third direction intersecting the first direction and the second direction; and a plate-like material formed from a material containing a synthetic resin, extending in the first direction and the second direction, and disposed on one side in the third direction of the three-dimensional structural material and in contact with the convex portion protruding on one side in the third direction, comprising: A transport unit that transports a laminate in which the plate-like material is laminated on one side and the other side in the third direction with respect to the three-dimensional structural material; A pressing unit that presses the laminate being transported by the transport unit, pressing the plate-like material disposed on one side in the third direction against the convex portion protruding on one side in the third direction; An irradiation unit that irradiates, from one side in the third direction, a light beam that heats a contact portion that comes into contact with a convex portion protruding to one side in the third direction of the laminate being pressed by the pressing unit and a plate-like material disposed on one side in the third direction; comprising; the pressing unit has an internal space that opens toward the plate-like material, and a pressing unit main body that contacts the plate-like material from one side in the third direction; a gas supply source that supplies gas to the internal space of the pressing unit main body; comprising; the pressing unit main body includes an irradiation side wall that is transmissive to the light beam A fusion bonding device.

4. The three-dimensional structural material has a corrugated shape with a plurality of convex portions extending in the second direction, the conveying unit conveys the laminate in the first direction, the irradiation unit irradiates the light beam along the convex portion extending in the second direction The fusion bonding device according to any one of claims 1 to 3.

5. The three-dimensional structural material has a corrugated shape with a plurality of convex portions extending in the first direction, the conveying unit conveys the laminate in the second direction, the irradiation unit irradiates the light beam along the convex portion extending in the first direction The fusion bonding device according to any one of claims 1 to 3.

6. The irradiation unit and the pressing unit A plurality are provided at intervals in the direction in which the laminate is conveyed by the conveying unit, among the first direction and the second direction, The plurality of irradiation units irradiate and heat the light beam on different contact portions The fusion bonding device according to any one of claims 1 to 5.

7. A position measuring device that measures the position of the convex portion disposed on one side in the third direction and the irradiation position where the light beam is irradiated by the irradiation unit; A temperature monitoring device that monitors the temperature of an anti-fusion surface located on one side in the third direction of the plate-like material disposed on one side in the third direction; A control device that controls the irradiation unit based on the measurement result by the position measuring device and the monitoring result by the temperature monitoring device; comprising The fusion bonding device according to any one of claims 1 to 6. Claim 8: A fusion device for fusing a three-dimensional structural material formed from a material containing a synthetic resin, extending in a first direction and a second direction intersecting the first direction, and having a convex portion protruding on one side in at least a third direction intersecting the first direction and the second direction, and a plate-shaped material formed from a material containing a synthetic resin, extending in the first direction and the second direction, and disposed on one side in the third direction of the three-dimensional structural material and in contact with the convex portion protruding on one side in the third direction, comprising: A transport unit that transports a laminate in which the plate-shaped material is laminated on one side and the other side in the third direction with respect to the three-dimensional structural material; A pressing unit that presses the laminate being transported by the transport unit to press the plate-shaped material disposed on one side in the third direction against the convex portion protruding on one side in the third direction; An irradiation unit that irradiates, from one side in the third direction, a light beam that heats a contact portion where the convex portion protruding on one side in the third direction of the laminate being pressed by the pressing unit contacts the plate-shaped material disposed on one side in the third direction; A position measurement device that measures the position of the convex portion disposed on one side in the third direction and the irradiation position where the light beam is irradiated by the irradiation unit; A temperature monitoring device that monitors the temperature of an anti-fusion surface located on one side in the third direction of the plate-shaped material disposed on one side in the third direction; A control device that controls the irradiation unit based on the measurement result by the position measurement device and the monitoring result by the temperature monitoring device; A fusion device comprising the above.

9. Comprising a preheating heater for preheating the laminate The fusion device according to any one of Claims 1 to 8. Claim 10: A fusion device for fusing a three-dimensional structural material formed from a material containing a synthetic resin, extending in a first direction and a second direction intersecting the first direction, and having a convex portion protruding on one side in at least a third direction intersecting the first direction and the second direction, and a plate-shaped material formed from a material containing a synthetic resin, extending in the first direction and the second direction, and disposed on one side in the third direction of the three-dimensional structural material and in contact with the convex portion protruding on one side in the third direction, comprising: A transport unit that transports a laminate in which the plate-shaped material is laminated on one side and the other side in the third direction with respect to the three-dimensional structural material; A pressing part that presses the laminate being conveyed by the conveying part and presses the plate-like material disposed on one side in the third direction against the convex part protruding on one side in the third direction; An irradiation part that irradiates, from one side in the third direction, a light beam that heats the contact part following the contact part between the convex part protruding on one side in the third direction of the laminate being pressed by the pressing part and the plate-like material disposed on one side in the third direction; Comprising; A fusing device including a preheating heater for preheating the laminate.

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