JP7706400B2 - Fusion device - Google Patents

Description

This disclosure relates to a fusion device.

Patent Document 1 describes a method for preparing a thermoplastic composite material. In this patent document, two parts containing a thermoplastic polymer and continuous carbon fiber containing a laser absorbing additive are joined to improve mechanical performance. In this patent document, the two parts are heated and melted by irradiating them with a laser just before they are butted together, and then the two parts are butted together and pressed together to join them.

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 with a clamp, and the overlapping joint between the resin member and the metal is joined by irradiating the joint with laser light from the resin member side through the glass plate.

Patent document 3 describes a welding method in which an overlapping portion is formed by sandwiching a light absorbing material between two resin members that are not transparent to laser light, and the light absorbing material and the resin members in the overlapping portion are melted by directly irradiating the light absorbing material with laser light, thereby welding the two resin members together.

Special Publication No. 2021-507956 JP 2019-142240 A Patent No. 6025629

However, it is desirable to reduce the weight of the composite material containing the above-mentioned thermoplastic resin while maintaining its rigidity. One method for achieving this is to join a flat or sheet-like composite material with a three-dimensional composite material having a plurality of protrusions.
However, when irradiating the joining surfaces with laser light immediately before the joining surfaces are butted together as in Patent Document 1, depending on the three-dimensional shape of the composite material, it may be difficult to irradiate the laser light at the required locations.
In addition, as in Patent Document 2, when a resin member is superimposed on a joining target and then a laser beam is irradiated from a surface side of the composite material, it is a prerequisite that at least one of the resin members is capable of transmitting the laser beam, which places restrictions on the composite material to which the method can be applied.
To address this issue, when an intermediate material such as a light absorbing material is placed between resin members and laser light is directly irradiated onto the intermediate material as in Patent Document 3, it may be difficult to irradiate the required areas with laser light depending on the three-dimensional shape of the composite material. There is also a concern that this may hinder weight reduction efforts.

This disclosure was made in consideration of the above circumstances, and provides a simpler system for fusing flat or sheet-shaped composite materials and composite materials with three-dimensional shapes having multiple protrusions.

In order to solve the above problems, the following configuration is adopted.
According to a first aspect of the present disclosure, a fusion device is a fusion device that fuses a three-dimensional structural material formed from a material containing a synthetic resin, extending in a first direction and a second direction intersecting with the first direction, and having a convex portion protruding at least to one side in a third direction intersecting with 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 of the three-dimensional structural material in the third direction and in contact with the convex portion protruding to one side in the third direction, the fusion device including a conveying unit that conveys a stack in which the plate-shaped material is laminated on the three-dimensional structural material from one side and the other side in the third direction, and a conveying unit that conveys a stack of the plate-shaped material from the one side and the other side in the third direction. the pressurizing unit presses the laminate, pressing the plate-shaped material arranged on one side in the third direction against the convex portion protruding on one side in the third direction; and an irradiation unit irradiates a light beam from one side in the third direction, following a contact portion between the convex portion protruding on one side in the third direction of the laminate being pressed by the pressurizing unit and the plate-shaped material arranged on one side in the third direction, and heating the contact portion . The pressurizing unit comprises a pressing plate member formed in a plate shape that is transmissive to the light beam and extends in the first direction and the second direction to cover 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.

The fusion device disclosed herein can prevent the fusion process from becoming complicated, regardless of whether the materials to be fused are light-transmitting or not.

FIG. 2 is an exploded perspective view of a laminate to be fused by the fusion device in the first embodiment of the present disclosure. FIG. 1 is a perspective view showing a schematic configuration of a fusion device according to a first embodiment of the present disclosure. 2 is a diagram showing a schematic configuration of an irradiation unit main body in the first embodiment of the present disclosure. FIG. 3 is a diagram showing the irradiation unit main body in the first embodiment of the present disclosure as viewed from the transport direction. FIG. FIG. 11 is a perspective view showing a schematic configuration of a fusion device according to a second embodiment of the present disclosure. FIG. 6 is an enlarged view of a main part of FIG. 5 . FIG. 11 is a perspective view showing a schematic configuration of a fusion device according to a third embodiment of the present disclosure. FIG. 11 is a perspective view showing a schematic configuration of a fusion device according to a fourth embodiment of the present disclosure. FIG. 13 is a perspective view showing a schematic configuration of a fusion device according to a fifth embodiment of the present disclosure. FIG. 11 is a perspective view showing a schematic configuration of a fusion device in a modified example of each embodiment of the present disclosure.

Hereinafter, an embodiment 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 device according to a first embodiment of the present disclosure.
As shown in FIG. 1, the laminate 10 fused by the fusion device of the first embodiment includes a three-dimensional structural member 1 formed of a material containing synthetic resin and having a plurality of protrusions 3, and a plate-shaped member 2 formed of a material containing synthetic resin and laminated on the three-dimensional structural member 1. The three-dimensional structural member 1 and the plate-shaped member 2 exemplified in the first embodiment are both thermoplastic CFRP (Carbon Fiber Reinforced Plastics). Examples of synthetic resins contained in the thermoplastic CFRP include polyamide and PEEK (Poly Ether Ether Ketone). In the laminate 10 of this embodiment, two plate-shaped members 2 and one three-dimensional structural member 1 are laminated. The three-dimensional structural member 1 is sandwiched between these two plate-shaped members 2.

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 protrusions 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 this embodiment has a corrugated shape with a plurality of protrusions 3. This three-dimensional structural material 1 has a first edge 4 and a second edge 5 that extend parallel to each other in a plan view, and the direction in which these first edge 4 and second edge 5 extend is the first direction D1. The plurality of protrusions 3 illustrated in this embodiment are formed side by side in the first direction D1.

All of these multiple protrusions 3 have the same shape and extend in the second direction D2. That is, the ridge lines 3a of these protrusions 3 extend in the second direction D2 in a plan view, forming straight lines from the first edge 4 to the second edge 5, and the ridge lines 3a of these multiple protrusions 3 extend parallel to each other. The height of the protrusions 3 in the third direction D3 that intersects with the first direction D1 and the second direction D2 is approximately constant. In other words, the protrusions 3 form ridges of constant height.

The plate-shaped material 2 illustrated in this 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-shaped material 2 in this embodiment has a width dimension that is the same as the dimension in the second direction D2 of the three-dimensional structural material 1 described above. The plate-shaped material 2 arranged on one side in the third direction D3 is in contact with a convex portion 3 protruding on one side in the third direction D3. The plate-shaped material 2 arranged on the other side in the third direction D3 is in contact with a convex portion 3 protruding on the other side in the third direction D3. The synthetic resins constituting the three-dimensional structural material 1 and the plate-shaped material 2 in this embodiment are each configured to be opaque to light irradiated by the irradiation unit 23 described below.

FIG. 2 is a perspective view showing a schematic configuration of a fusion device according to the first embodiment of the present disclosure.
As shown in FIG. 2 , the fusion device 20 includes a conveying unit 21 , a pressure 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 a third direction D3 in which the three-dimensional structural material 1 and the plate-shaped material 2 of the laminate 10 are stacked. The conveying unit 21 of this embodiment aligns the third direction D3 of the laminate 10 with the up-down 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, the configuration of the conveying unit 21 that conveys the laminate 10 can be exemplified by a belt conveyor.

In the following description, the trajectory (imaginary surface) of the lower surface of the laminate 10 that contacts the conveying unit 21 is referred to as the conveying path 24. For example, if the conveying unit 21 is a belt conveyor, the conveying path 24 is substantially the same surface as the conveying surface of the belt (in other words, the upper surface). The width direction Dw of the conveying path 24 coincides with the second direction D2 of the laminate 10 conveyed by the conveying unit 21. Furthermore, of the plate-shaped materials 2 arranged above and below the laminate 10, the plate-shaped material 2 arranged below the three-dimensional structural material 1 is already fused to the protruding portion 3 that protrudes downward from the three-dimensional structural material 1. Therefore, in the following description, the protruding portion 3 means the protruding portion 3 that protrudes upward, unless a distinction is necessary.

The pressure applying unit 22 applies pressure from above in the up-down direction Dh to the laminate 10 being transported by the transport unit 21. The pressure applying unit 22 includes a pressing plate member 25 and a pressing roller (pressing member) 26.
The pressure plate member 25 is conveyed by the conveying section 21 in the conveying direction Dt together with the laminate 10. The pressure plate member 25 is made transmissible to the light irradiated by the irradiation section 23. The pressure plate member 25 is disposed so as to cover the entire surface of the upward facing surface (hereinafter simply referred to as the anti-fusion surface 27) of the plate-shaped material 2 disposed above the laminate 10 conveyed by the conveying section 21 to be fused. Although a plate glass can be used as the pressure plate member 25, it is not limited to the plate glass as long as it has the necessary strength, rigidity, transparency, and heat resistance.

In this embodiment, the pressure plate member 25 is transported to the most downstream position in the transport direction Dt, for example, and then moved to the most upstream position in the transport direction Dt by a pressure plate member transport device (not shown) or an operator, and reused. In addition, the end face 25t of the pressure plate member 25 in the transport direction Dt is positioned in a range that does not hinder fusion by irradiation with laser light, which will be described later. For example, when laser light is irradiated from above perpendicular to the transport direction Dt, the position of the end face 25t of the pressure plate member 25 in the transport direction Dt is positioned so as not to coincide with the fusion range of the laminate 10 in the transport direction Dt. Note that, although an example is shown in which the transport unit 21 transports the laminate 10 and the pressure plate member 25 continuously, for example, the transport unit 21 may transport the laminate 10 and the pressure plate member 25 intermittently.

The pressure 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 this embodiment, multiple pressure plate members 25 having a rectangular shape in a plan view are used, and these multiple pressure plate members 25 are arranged on the laminate 10 side by side with no gaps in the conveying direction Dt.

The pressure roller 26 presses the pressure plate member 25 from above to below in the vertical direction Dh. The pressure roller 26 of this embodiment presses the laminate 10 conveyed by the conveying section 21 from above to below through the pressure plate member 25. The pressure rollers 26 are provided at intervals in the conveying direction Dt. The pressure rollers 26 of this embodiment are cylindrical and 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 section 21. By pressing the laminate 10 through the pressure plate member 25 by these pressure rollers 26, the laminate 10 sandwiched between the pressure plate member 25 and the conveying section 21 is pressurized from both outsides in the vertical direction Dh. In this way, the laminate 10 is pressurized by the pressure section 22, so that the fused range of the convex portion 3 of the three-dimensional structural material 1 and the plate-shaped material 2 are in close contact with each other. As described above, for example, when the laminate 10 and the pressure plate member 25 are transported intermittently, it is expected that one of the pressure rollers 26 will come off the pressure plate member 25 and be in a position where it cannot press the pressure plate member 25; however, the other pressure roller 26 will press the pressure plate member 25, so it is possible to uniformly press the anti-fusion surface 27 of the laminate 10.

Although the case where the pressure plate member 25 is pressed by the pressure roller 26 has been described, the configuration is not limited to a roller structure as long as the laminate 10 can be pressed. For example, a pressure member (not shown) that presses while sliding against the pressure plate member 25 may be used. Also, while FIG. 2 illustrates an example where one pressure unit 22 has two pressure rollers 26, the number of pressure rollers 26 provided in one pressure unit 22 is not limited to two. For example, two or more pressure rollers 26 may be provided on each of the upstream side Dtu in the transport direction and the downstream side Dtd in the transport direction.

The irradiation unit 23 irradiates light beams onto the laminate 10 being transported by the transport unit 21. The irradiation unit 23 irradiates light beams onto the laminate 10 from above, on the opposite side to the transport unit 21 in the vertical direction Dh. Specifically, the irradiation unit 23 irradiates light beams onto the plate-shaped material 2 along the contact portion 28 where the convex portion 3 protruding upward and the plate-shaped material 2 arranged above the three-dimensional structural material 1 are in contact. The irradiation of the light beams heats the contact portion 28. Furthermore, the irradiation unit 23 irradiates light beams in accordance with the displacement of the contact portion 28 being transported by the transport unit 21. The irradiation unit 23 of this embodiment includes an irradiation unit main body 31, a position measuring device 32, a temperature monitoring device 33, and a control device 34.

The irradiation unit 23 in this embodiment uses laser light as the light beam that heats the contact portion 28. The laser oscillator (not shown) that generates the laser light may be any device capable of oscillating laser light capable of melting the synthetic resin of the plate-shaped material 2 and the synthetic resin of the protrusions 3 at the contact portion 28. Examples include a fiber laser, a disk laser, a semiconductor laser, and a YAG laser. The laser light from the laser oscillator (not shown) is transmitted to the irradiation unit main body 31 via a transmission fiber 35.

The irradiation unit main body 31 moves the optical axis to follow the contact portion 28 moving from the upstream side Dtu in the conveying direction to the downstream side Dtd in the conveying direction. In this embodiment, since the convex portion 3 of the three-dimensional structural material 1 extends in the width direction Dw of the conveying path 24, the contact portion 28 of the three-dimensional structural material 1 forms a straight line extending in the width direction Dw of the conveying path 24 when viewed from above. The irradiation unit main body 31 of this embodiment scans the laser light transmitted by the transmission fiber 35 along the contact portion 28 in the width direction Dw of the conveying path 24 while following the contact portion 28 moving downstream in the conveying direction Dtd. Galvano mirrors can be exemplified as the mechanism for making the laser light follow the contact portion 28 moving in the conveying direction Dt and the mechanism for scanning the laser light in the width direction Dw of the conveying path 24.

Fig. 3 is a diagram showing a schematic configuration of an irradiation unit main body in the first embodiment of the present disclosure Fig. 4 is a diagram showing the irradiation unit main body in the first embodiment of the present disclosure as viewed from the transport direction.
As shown in Fig. 3 and Fig. 4, the irradiation unit main body 31 of this 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 a 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 conveying path 24. The laser light scanned in the width direction Dw of the conveying path 24 by the first galvanometer mirror 37 heads 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 conveying direction Dt, that is, in the conveying direction upstream side Dtu and the conveying direction downstream side Dtd. In other words, the second galvanometer mirror 38 moves the laser light scanned by the first galvanometer mirror 37 in the transport direction Dt in accordance with the transport speed of the transport unit 21, so as to follow the contact portion 28 to be heated. The second lens unit 39 focuses the laser light toward the contact portion 28.

Here, the driving speed of the first galvanometer mirror 37 when scanning in the width direction Dw of the conveying path 24 is set to a driving speed that can irradiate the entire range of the contact portion 28 to be heated by one irradiation unit main body 31 during one cycle of the operation of the second galvanometer mirror 38 in the conveying direction Dt. In other words, the driving speed of the first galvanometer mirror 37 is a 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. Note that, although the case where the laser light is irradiated to the contact portion 28 only once in one direction has been exemplified, if an appropriate temperature distribution cannot be obtained by one irradiation, the same contact portion 28 may be irradiated multiple times during one cycle of the second galvanometer mirror 38. In this case, the driving speed of the second galvanometer mirror 38 may be set to the product of the driving speed and the number of irradiations in the case of one irradiation, that is, a multiple of the number of irradiations. The above-mentioned first galvanometer mirror 37 and second galvanometer mirror 38 are preferably positioned in the optical system in the irradiation unit main body 31 so that the laser light can be reflected with a small beam diameter. This allows the first galvanometer mirror 37 and second galvanometer mirror 38 to be made smaller and lighter, improving the installation flexibility of the irradiation unit main body 31. In this embodiment, refrigerant piping and the like that cools the inside of the irradiation unit main body 31 are not shown.

2, the irradiation unit 23 of this embodiment includes a plurality of irradiation unit bodies 31 arranged in the width direction Dw of the transport path 24. Each of the plurality of irradiation unit bodies 31 is capable of irradiating a laser beam to a predetermined region in the width direction Dw. The irradiation regions irradiated with the laser beam by the plurality of irradiation unit bodies 31 are continuous in the width direction Dw of the transport path 24. In other words, by arranging the plurality of irradiation unit bodies 31 in the width direction Dw, it is possible to irradiate the entire width direction Dw of the laminate 10 with the laser beam. Note that, when one irradiation unit body 31 can scan the entire width direction Dw of the laminate 10 with the laser beam, it is not necessary to arrange the plurality of irradiation unit bodies 31 in a line. In addition, the arrangement of the plurality of irradiation unit bodies 31 is not limited to the case where they are arranged at the same position in the transport direction Dt. For example, when it is difficult to arrange the plurality of irradiation unit bodies 31 at the same position in the transport direction Dt, the positions of the irradiation unit bodies 31 adjacent to each other in the width direction Dw of the transport path 24 may be shifted in the transport direction Dt.

In this embodiment, one pressure unit 22 is provided for one irradiation unit main body 31. The pressure plate member 25 used in the pressure unit 22 on the upstream side Dtu in the conveying direction is transported to the downstream side Dtd in the conveying direction and is also used in the pressure unit 22 on the downstream side Dtd in the conveying direction.

In the above description, the contact portion 28 is heated by irradiating the contact portion 28 with a laser beam while scanning the laser beam in the width direction Dw of the conveying path 24. However, the present invention is not limited to the configuration of scanning the laser beam in the width direction Dw of the conveying path 24. For example, a line beam extending linearly in the width direction Dw of the conveying path 24 may be used as the laser beam irradiated to the laminate 10 by the irradiating unit main body 31. For example, a rod lens, a cylindrical lens, a rod integrator, a fly-eye lens, a microlens array, a diffraction element, etc. may be used to generate the line beam. In addition, similar to the case where the above-mentioned laser beam is scanned in the width direction Dw of the conveying path 24, if one irradiating unit main body 31 cannot irradiate the entire width direction Dw of the laminate 10, a plurality of irradiating unit main bodies 31 capable of irradiating the line beam may be arranged in the width direction Dw of the conveying path 24. By using such a line beam, it is not necessary to secure the time required for scanning the conveying path 24 in the width direction Dw, so that a composite fusing device can be realized with a simpler system. In addition, by using a line beam, it is not necessary to consider synchronization with the scanning timing, so it is possible to increase the transport speed. When using the line beam, the first galvanometer mirror 37 of the irradiation unit main body 31 described above can be omitted.

The range in which the irradiation unit 23 of this embodiment can make the laser light follow the transport direction Dt (hereinafter simply referred to as the laser light irradiation range) has a predetermined size on the upstream side Dtu in the transport direction and the downstream side Dtd in the transport direction based on a predetermined position in the transport direction Dt. The pressure unit 22 of this embodiment is disposed on the upstream side Dtu in the transport direction and the downstream side Dtd in the transport direction of the laser light irradiation range, in other words, on both sides outside the transport direction Dt of the laser light irradiation range.

The fusion device 20 of this embodiment has multiple irradiation units 23 spaced apart in the conveying direction Dt. More specifically, the fusion device 20 has a first irradiation unit 23U and a second irradiation unit 23D as the multiple irradiation units 23. The first irradiation unit 23U and the second irradiation unit 23D each irradiate laser light along different contact parts 28 of the same laminate 10. The fusion device 20 of this embodiment heats, for example, odd-numbered contact parts 28 with the first irradiation unit 23U and even-numbered contact parts 28 with the second irradiation unit 23D. In this way, it is possible to increase the conveying speed of the laminate 10 while sufficiently heating all contact parts 28, for example, compared to the case where only one irradiation unit 23 is used.

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 the convex portion 3 and the irradiation position information of the laser light to the control device 34. An example of a measurement method using the position measuring device 32 is a method of measuring the conveying position of the convex portion 3 and the irradiation position of the laser light by image recognition from outside the width direction Dw of the conveying path 24.

The temperature monitoring device 33 monitors the temperature of the non-fusion surface 27 in a non-contact manner, and outputs information on the monitoring results to the control device 34. An example of the temperature monitoring device 33 is a thermoviewer. Here, on the surface of the plate material 2 in contact with the pressing plate member 25, the temperature rises at the irradiation position where the laser light is irradiated, and the temperature monitoring device 33 mainly monitors the temperature at this irradiation position.

The control device 34 controls the operation of the irradiation unit 23 based on the measurement results by the position measurement device 32 and the monitoring results by the temperature monitoring device 33. More specifically, based on the measurement results by the position measurement device 32, 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 light. Furthermore, based on the monitoring results by the temperature monitoring device 33, the control device 34 controls the irradiation time of the laser light by the irradiation unit 23 and the output of the laser light to keep the surface temperature of the anti-fusion surface 27 of the plate-shaped material 2 at the irradiation position of the laser light lower than a temperature that may cause damage to the plate-shaped material 2.

Here, the surface temperature of the anti-fusion surface 27 irradiated with the laser light is correlated with the fusion surface temperature of the plate-shaped material 2 in contact with the protrusion 3, and can be obtained in advance by experiments or simulations. The control device 34 stores in advance in a storage device (not shown) such as a non-volatile memory a map, table, formula, etc. of the surface temperature of the anti-fusion surface 27 and the fusion surface temperature. The control device 34 calculates 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 calculated fusion surface temperature is within an appropriate range. Note that the combination of the position measuring device 32, the temperature monitoring device 33, and the control device 34 is provided for each irradiation unit 23, but the figure shows the combination of the position measuring device 32, the temperature monitoring device 33, and the control device 34 provided in one irradiation unit 23 out of the multiple irradiation units 23, and the combinations provided in the other irradiation units 23 are omitted (the same applies to the second to fifth embodiments and modified examples below).

(Action and Effect)
According to the fusion device 20 of the first embodiment, when fusing the three-dimensional structural material 1 having a plurality of protrusions 3 and the plate-shaped material 2 laminated on the three-dimensional structural material 1, the laminate 10 of the three-dimensional structural material 1 and the plate-shaped material 2 can be conveyed in the conveying direction Dt while being irradiated with laser light to heat the contact portion 28 where the protrusions 3 come into contact with the plate-shaped material 2. Furthermore, when heating the contact portion 28, the laminate 10 can be pressurized from above. In addition, since the laser light from the irradiating portion 23 follows the contact portion 28, the three-dimensional structural material 1 and the plate-shaped material 2 can be fused at the contact portion 28 while the laminate 10 is conveyed by the conveying portion 21.
Therefore, regardless of whether the plate-shaped material 2 transmits light or not, it is possible to fuse the three-dimensional structural material 1 and the plate-shaped material 2 without placing an intermediate material between the protrusion 3 and the plate-shaped material 2. This makes it possible to prevent the fusion work from becoming complicated. In addition, since the laser light is not irradiated to areas that do not require heating, it is possible to prevent the three-dimensional structural material 1 and the plate-shaped material 2 from being affected by unnecessary heating.

According to the fusion device 20 of the first embodiment described above, the pressure applying section 22 further includes a pressure plate member 25 that is capable of transmitting laser light and covers from above the plate-shaped material 2 arranged above the three-dimensional structural material 1, and a pressure roller 26 that presses the pressure plate member 25 from above.
This can reduce the pressing force from the pressing roller 26 being locally applied to the laminate 10, thereby suppressing deformation of the laminate 10. In addition, it can also suppress changes in the transmittance of the laser light due to impediments to the conveyance of the pressing plate member 25 and stains or damage to the surface of the pressing plate member 25.
Furthermore, when a plate glass is used as the pressure plate member 25, if the surface of the pressure plate member 25 becomes dirty or damaged, the dirt or scratches can be removed by polishing. Therefore, the surface of the pressure plate member 25 can be easily maintained in a normal state. Furthermore, since the end face 25t of the pressure plate member 25 in the conveying direction Dt is positioned in a range that does not hinder the irradiation of the laser light, the reflection or scattering of the laser light by the end face 25t can be suppressed.

According to the fusion bonding device 20 of the first embodiment, the plurality of irradiation units 23 provided at intervals in the transport direction Dt irradiate different contact portions 28 with laser light to heat them.
This makes it possible to ensure sufficient irradiation time of the laser light to one contact portion 28 without reducing the conveying speed, thereby shortening the time required to fuse the three-dimensional structural material 1 and the plate-shaped material 2 together and suppressing a decrease in the reliability of the fusion.

According to the fusion device 20 of the first embodiment, the position of the protrusion 3 and the irradiation position of the laser light are measured in a non-contact manner, and the temperature of the surface of the plate material 2 opposite the protrusion 3 is monitored. Then, the irradiation unit 23 is controlled based on the measurement results of the irradiation position and the temperature monitoring results. Therefore, it is possible to easily make the irradiation position of the laser light follow the contact portion 28.

[Second embodiment]
Next, a second embodiment of the present disclosure will be described with reference to the drawings. The second embodiment differs from the first embodiment in the configuration of the pressurizing unit. Therefore, in the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and duplicated descriptions will be omitted.
Fig. 5 is a perspective view showing a schematic configuration of a fusion device according to a second embodiment of the present disclosure, and Fig. 6 is an enlarged view of a main part of Fig. 5.
5 and 6, the fusion device 120 of the second embodiment includes a conveying unit 21, a pressurizing unit 122, and an irradiating unit 23. Note that the conveying unit 21 and the irradiating unit 23 have the same configurations as those of the first embodiment described above, and therefore detailed description thereof will be omitted.

The pressurizing unit 122 pressurizes the laminate 10 conveyed by the conveying unit 21 from above. The pressurizing unit 122 of this second embodiment includes a pressurizing 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 pressurizing unit main body 41.

The pressure applying unit body 41 is in contact with the anti-fusion surface 27, which is the upper surface of the plate-shaped material 2 located above, and is arranged to be slidable relative to this anti-fusion surface 27. The pressure applying unit body 41 is formed so as to extend from the position of one edge 24a to the position of the other edge 24b in the width direction Dw of the conveying path 24. The pressure applying unit body 41 has an internal space 44 with an opening 43 that opens toward the plate-shaped material 2 side in the vertical direction Dh. Gas can be supplied to this internal space 44 from the outside. The pressure applying unit body 41 of this embodiment is biased toward the anti-fusion surface 27 side by, for example, an elastic member or the like.

The air supply source 42 supplies gas at a pressure higher than atmospheric pressure (e.g., 0.5 MPa to 1.0 MPa) to the internal space 44 of the pressurizing unit body 41. Examples of the gas supplied by the air supply source 42 include an inert gas and dry air.

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

The downstream wall 47 has the same configuration as the upstream wall 46, and extends upward from the anti-fusion surface 27 of the plate-shaped material 2. The downstream wall 47 is located downstream of the most downstream position in the conveying direction Dt of the irradiation range. The downstream wall 47 of this embodiment is located slightly downstream of the most downstream position in the conveying direction Dt of the irradiation range. The downstream wall 47 and the above-mentioned upstream wall 46 each have a seal material 51 that contacts the anti-fusion surface 27 and can slide in the conveying direction Dt relative to the anti-fusion surface 27. Examples of these seal materials 51 include gland packing and brush seals. Note that, although the configuration in which the seal material 51 contacts and slides against the anti-fusion surface 27 has been described, in order to suppress wear of the seal material 51, for example, the seal material 51 may be a rotatable roller structure similar to the pressure roller 26 of the first embodiment.

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

At least one of the two end walls 48 of one pressure unit body 41 is made of glass, synthetic resin, or the like that is capable of transmitting light. This makes it possible to obtain an image of the position of the convex portion 3 and the irradiation position of the laser light from outside the pressure unit body 41. In other words, by providing an end wall 48 that is capable of transmitting light, it is possible to measure the position of the convex portion 3 and the irradiation position of the laser light by photographing them from outside the pressure unit body 41 using the position measuring device 32.

The irradiation side wall 49 is provided at a position facing the anti-fusion surface 27 of the plate-shaped material 2. In other words, it is provided between the anti-fusion surface 27 of the plate-shaped material 2 and the irradiation unit main body 31 in the vertical direction Dh. The irradiation side wall 49 is formed so as to close the internal space 44 of the pressure 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 of the upstream side wall 46 opposite the sealing material 51 to the edge of the downstream side wall 47 opposite the sealing material 51. The irradiation side wall 49 is made transparent 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 this embodiment is a flat plate extending parallel to the anti-fusion surface 27 of the plate-shaped material 2 of the laminate 10.

As in the first embodiment, the fusion device 120 of this embodiment has multiple combinations of the above-mentioned irradiation section 23 and pressure section 122 spaced apart in the conveying direction Dt. The first irradiation section 23U and the second irradiation section 23D of this embodiment irradiate laser light along different contact sections 28 of the same laminate 10. Note that although the case where two irradiation sections 23 are provided has been described, as in the first embodiment, three or more irradiation sections 23 may be provided to heat different contact sections 28, respectively.

(Action and Effect)
According to the fusion bonding apparatus 120 of the second embodiment, the plate material 2 located above can be pressed from above by the gas supplied to the internal space 44 of the pressure unit main body 41, so that, as in the first embodiment, the laminate 10 can be pressurized by the pressure unit 122 while the contact portion 28 can be heated by the irradiation unit 23. Furthermore, since the pressure plate member 25 of the first embodiment is not required, a device for handling the pressure plate member 25 is not required, and the laminate 10 can be easily fused.

[Third embodiment]
Next, a third embodiment of the present disclosure will be described with reference to the drawings. The third embodiment differs from the first embodiment in the configuration of the pressurizing unit. Therefore, in the third embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and duplicated descriptions will be omitted.
FIG. 7 is a perspective view showing a schematic configuration of a fusion device according to a third embodiment of the present disclosure.
7, a fusion device 220 of the third embodiment includes a conveying unit 21, a pressurizing unit 222, and an irradiating unit 23. Note that the conveying unit 21 and the irradiating unit 23 have the same configurations as those of the first and second embodiments described above, and therefore detailed description thereof will be omitted.

The pressure applying unit 22 applies pressure to the laminate 10 conveyed by the conveying unit 21 from both sides in the vertical direction Dh. The pressure applying unit 222 of this third embodiment includes a first pressing member 54 and a second pressing member 55.

The first pressing member 54 presses the laminate 10 from above, which is the side irradiated with the laser light in the vertical direction Dh of the laminate 10. The first pressing member 54 has a configuration similar to that of the pressing roller 26 of the first embodiment, and is cylindrical and rotatable 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 first pressing members 54 are provided in one pressure section 222. These plurality of first pressing members 54 are respectively arranged on the upstream side Dtu in the conveying direction and the downstream side Dtd in the conveying direction from the irradiation range of the laser light by the irradiation section 23.

Here, FIG. 7 illustrates an example in which one pressure section 222 has two first pressing members 54, but the number of first pressing members 54 is not limited to two. For example, two or more first pressing members 54 may be provided on the upstream side Dtu in the conveying direction and the downstream side Dtd in the conveying direction within a range in which the laser light can follow the contact section 28.

The second pressing member 55 presses the laminate 10 from below, opposite the first pressing member 54 in the vertical direction Dh. The second pressing member 55 is cylindrical and rotatable around a rotation axis O2 extending in the width direction Dw of the conveying 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 conveying direction Dt. The second pressing member 55 of this third embodiment is provided at the center of the first pressing member 54 in the conveying direction Dt. The second pressing member 55 presses the laminate 10 from the conveying section 21 side, that is, the opposite side to the irradiation section 23. More specifically, the second pressing member 55 of this third embodiment presses the lower plate-shaped material 2 of the two plate-shaped materials 2 arranged to sandwich the three-dimensional structural material 1, toward the upper side, which is the irradiation section 23 side.

(Action and Effect)
According to the fusion device 220 of the third embodiment, the laminate 10 is pressed by the first pressing member 54 and the laminate 10 is pressed by the second pressing member 55, so that the laminate 10 can be pressurized from both sides in the vertical direction Dh. Therefore, as in the first embodiment, it is possible to heat the contact portion 28 by the irradiation portion 23 while pressing the laminate 10 by the pressing portion 222. Furthermore, the fusion device 220 of the third embodiment does not need to provide the pressing plate member 25 of the first embodiment or the air supply source 42 of the second embodiment, which is advantageous in that the device configuration can be prevented from becoming complicated.

[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 first embodiment described above in the transport direction of the laminate and the configuration of the irradiation unit. Therefore, in this fourth embodiment, the same parts as those in the first embodiment are given the same reference numerals, and duplicated descriptions will be 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 , a fusion device 320 of the fourth embodiment includes a conveying unit 21 , a pressurizing unit 22 , and an irradiating unit 323 .

In this fourth embodiment, as in the first embodiment, one three-dimensional structural material 1 is sandwiched between two plate-shaped materials 2 and laminated and fused. As in the first embodiment, the three-dimensional structural material 1 of this fourth embodiment is also formed in a corrugated plate shape having a shape with multiple protrusions 3. This three-dimensional structural material 1 has a first edge 4 and a second edge 5 that are parallel to each other in a plan view, and multiple protrusions 3 are formed side by side in a first direction D1, which is the direction in which these first edge 4 and second edge 5 extend. These multiple protrusions 3 are formed in the same manner as in the first embodiment and extend in a second direction D2. As in the first embodiment, the plate-shaped material 2 of this fourth embodiment is also formed in a sheet shape of substantially constant thickness.

The conveying unit 21 conveys the laminate 310, which is a stack of a three-dimensional structural material 1 and a plate-shaped material 2, as a workpiece. The conveying unit 21 conveys the laminate 310 in a direction perpendicular to the up-down direction Dh of the laminate 310. The upper of the two plate-shaped materials 2 is placed on a protrusion 3 that protrudes upward and is formed on the three-dimensional structural material 1.

The conveying section 21 of this fourth embodiment conveys the laminate 310 in a position in which the third direction D3 of the laminate 10 is aligned with the vertical direction Dh, and further, the second direction D2 in which the protrusions 3 of the three-dimensional structural material 1 extend is aligned with the conveying direction Dt. The conveying section 21 of this fourth embodiment conveys the laminate 310 intermittently. In other words, multiple laminates 310 arranged at intervals in the conveying direction Dt are conveyed sequentially from the upstream side Dtu in the conveying direction to the downstream side Dtd in the conveying direction. Note that, as in the first embodiment, the conveying section 21 may be configured to convey the laminate 310 continuously.

The pressure applying unit 22 applies pressure from above to the laminate 310 being transported by the transport unit 21. As in the first embodiment, the pressure applying unit 22 includes a pressure plate member 25 and a pressure roller (pressing member) 26.

The pressure plate members 25 are transported together with the laminate 10 by the transport unit 21 at intervals in the transport direction Dt. The pressure plate members 25 are made transmissive to the laser light irradiated by the irradiation unit 323, and are arranged to cover the entire surface of the anti-fusion surface 27 of the plate-shaped material 2 located above. The shape of the pressure plate member 25 illustrated in the fourth embodiment in plan view is substantially the same rectangular shape as the shape of one laminate 310 in plan view. The pressure plate member 25 is stacked on the laminate 310, and the laminate 310 and the pressure plate member 25 are transported by the transport unit 21 in a state in which the position of the outer edge of one laminate 310 and the position of the outer edge of one pressure plate member 25 are aligned in plan view. The pressure plate member 25 of the fourth embodiment is also transported to the most downstream of the transport direction Dt, as in the first embodiment, and then moved to the most upstream of the transport direction Dt by a glass transport device (not shown) or an operator for reuse.

The pressure roller 26 presses the laminate 310 arranged on the conveying section 21 from above downward via the pressure plate member 25. The pressure roller 26 has the same configuration as in the first embodiment, and multiple pressure rollers 26 are provided at intervals in the conveying direction Dt. These multiple pressure rollers 26 are biased toward the pressure plate member 25. Here, the pressure roller 26 in this fourth embodiment presses the pressure plate member 25, so that even if one of the pressure rollers 26 provided on the upstream side Dtu and the downstream side Dtd in the conveying direction comes off the pressure plate member 25 and is in a position where it cannot press the pressure plate member 25, the other pressure roller 26 presses the pressure plate member 25, making it possible to uniformly press the anti-fusion surface 27 of the laminate 310.

The irradiation unit 323 irradiates the contact portion 28 of the laminate 310 being transported by the transport unit 21, where the protrusion 3 and the plate-shaped material 2 are in contact, with laser light to heat the contact portion 28. The irradiation unit 323 irradiates the laser light from above toward the anti-fusion surface 27 of the laminate 310. The irradiation unit 323 irradiates the laser light in accordance with the position of the contact portion 28. The irradiation unit 323 of the fourth embodiment includes an irradiation unit main body 331, a position measuring device 32, a temperature monitoring device 33, and a control device 34.

Here, the irradiation unit 323 uses laser light as a light beam for heating the contact portion 28, similar to the irradiation unit 23 of the first embodiment. Laser light from a laser oscillator is transmitted to the irradiation unit via a transmission fiber 35. On the other hand, the irradiation unit 323 of this fourth embodiment irradiates the laser light in a different direction than the irradiation unit 23 of the first embodiment.

The irradiation unit main body 331 moves the optical axis to follow the contact portion 28 moving from the upstream side Dtu in the conveying direction toward the downstream side Dtd in the conveying direction. In this fourth embodiment, the convex portion 3 extends in the conveying direction Dt, and the contact portion 28 is linear when viewed from above and extends in the conveying direction Dt. The irradiation unit main body 331 scans the laser light transmitted from the laser oscillator by the transmission fiber 35 in the conveying direction Dt along the contact portion 28 while following the contact portion 28 moving toward the downstream side Dtd in the conveying direction. In the irradiation unit main body 331, a galvanometer mirror can be exemplified as a configuration for making the laser light follow the contact portion 28 moving in the conveying direction Dt, and a configuration for scanning the laser light in the conveying direction Dt.

One irradiation section 323 has a plurality of irradiation section bodies 331 arranged in the width direction Dw and the conveying direction Dt of the conveying path 24. In this fourth embodiment, one irradiation section 323 has a total of four irradiation section bodies 331. Specifically, the four irradiation section bodies 331 in one irradiation section 323 are arranged in a row in the conveying direction Dt on both sides of the width direction Dw of the conveying path 24, two by two. And, with respect to the irradiation section body 331 arranged on the upstream side Dtu in the conveying direction, the irradiation section body 331 arranged on the downstream side Dtd in the conveying direction is shifted in the width direction Dw of the conveying path 24. The areas irradiated with laser light (in other words, scanned) by these multiple irradiation section bodies 331 are each a region of a predetermined width in the second direction D2 (in other words, the conveying direction Dt) of the laminate 10. In this fourth embodiment, one irradiation section 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 conveying path 24. The arrangement of the multiple irradiation unit bodies 331 is not limited to the arrangement shown in FIG. 8.

The scannable range As (in other words, the irradiation range) in which the irradiation unit main body 331 can scan the laser light in the transport direction Dt has a predetermined length in the transport direction Dt. The irradiation unit main body 331 irradiates a predetermined number of contact parts 28 arranged in the width direction Dw of the transport path 24 within this scannable range As with laser light to heat them. For example, when focusing on one irradiation unit main body 331, when heating of the first contact part 28 is completed, heating of the adjacent second contact part 28 is started, when heating of the second contact part 28 is completed, heating of the third contact part 28 is started, and when heating of the third contact part 28 is completed, heating of the first contact part 28 is started again, and so on. The irradiation unit main body 331 heats the entire area of each contact part 28 in the transport direction Dt while sequentially changing the contact part 28 to which the laser light is irradiated.

The fusion device 320 is provided with a plurality of irradiation sections 323 spaced apart in the conveying direction Dt, as in the first embodiment. The fusion device 320 of this fourth embodiment is provided with a first irradiation section 323U and a second irradiation section 323D as the plurality of irradiation sections 323. The first irradiation section 323U and the second irradiation section 323D each irradiate laser light along the contact sections 28 of different laminates 310 adjacent to each other in the conveying direction Dt. In this way, as in the first embodiment, it is possible to increase the conveying speed of the laminate 310 while sufficiently heating all of the contact sections 28, compared to the case where only one irradiation section 323 is used.

In the above description of the fourth embodiment, the configuration in which the contact portion 28 is heated by irradiating the laminate 310 with laser light while scanning the laser light in the transport direction Dt has been described. However, the configuration is not limited to scanning the laser light in the transport direction Dt. For example, a line beam can be used as the laser light, as in the irradiation unit main body 31 of the first embodiment. In this case, the line beam can be irradiated to the laminate 310 so as to extend linearly in the transport direction Dt. In addition, the length of this line beam in the transport direction Dt can be changed 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 transport direction Dt in this way, for example, by increasing the length of the line beam without reducing the transport speed, the heating time of the contact portion 28 can be increased. Therefore, the contact portion 28 can be fused more quickly.

Although the case where multiple contact parts 28 are heated by one irradiation part body 331 has been described, one contact part 28 may be heated by one irradiation part body 331. Also, the laser light transmitted from the laser oscillation device may be branched so that one irradiation part body 331 can irradiate multiple contact parts 28 with the laser light simultaneously.

Furthermore, although the case where two irradiation units 323 are provided has been described, three or more irradiation units 323 may be provided.

(Action and Effect)
According to the fusion device 320 of the fourth embodiment, the conveying direction Dt of the laminate 310 and the second direction D2 in which the protrusions 3 extend can be made to coincide with each other, so that when the irradiation range by the irradiation unit 323 is constant, the laser light can be irradiated over a wider range by the amount of movement of the laminate 310. In addition, since the irradiation range of the laser light irradiated by the irradiation unit 323 extends in the conveying direction Dt, the 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 conveying speed can be made faster. On the other hand, when the conveying 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.

[Fifth embodiment]
Next, a fifth embodiment of the present disclosure will be described with reference to the drawings. The fifth embodiment differs from the fourth embodiment in the configuration of the irradiation unit and the pressurizing unit. Therefore, in the fifth embodiment, the same parts as those in the fourth embodiment are denoted by the same reference numerals, and the duplicated description will be 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 , a fusion device 420 of the fifth embodiment includes a conveying unit 21 , a pressurizing unit 122 , and an irradiating unit 423 .

The conveying section 21 has a configuration similar to that of the conveying section 21 of the fourth embodiment, and conveys a laminate 310 in which a three-dimensional structural material 1 and a plate-shaped material 2 are stacked. The conveying section 21 of this fifth embodiment differs from the conveying section 21 of the fourth embodiment in that, when conveying a plurality of laminates 310 that have been pre-cut to a width dimension that can be conveyed by the conveying section 21, adjacent laminates 310 in the conveying direction Dt are conveyed in close contact with each other.

The pressurizing unit 122 pressurizes the laminate 310 conveyed by the conveying unit 21 from above. The pressurizing unit 122 of the fifth embodiment has a configuration similar to that of the pressurizing unit 122 of the second embodiment, and includes a pressurizing unit 122 extending in the width direction Dw of the conveying path 24, and an air supply source (gas supply source) 42 (see FIG. 6) that supplies gas as a working fluid to the pressurizing unit 122.

The pressurizing unit body 41 contacts the anti-fusion surface 27 of the plate-shaped material 2 located at the top of the laminate 310. The pressurizing unit body 41 has an internal space 44 with 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 pressurizing unit body 41 has an upstream wall 46, a downstream wall 47, an end wall 48, and an irradiation side wall 49 that define the internal space 44. The downstream wall 47 and the upstream wall 46 each have a seal material 51 that contacts the anti-fusion surface 27.

In this fifth embodiment, multiple laminates 310 are transported in a close contact state. A seam S is formed between adjacent laminates 310 in the transport direction Dt. If a step is formed at this seam S, a seal material 51 using a gland packing or the like may get caught on the step and stop the transport of the laminate 310 by the transport unit 21. For this reason, in this fifth embodiment, a rotatable roller-structured seal material 51 is used as the seal material 51. The radius of this roller-structured seal material 51 can be two or more times the maximum expected size of the step. Note that the seal material 51 is not limited to a roller-structured seal material 51 as long as it is configured not to get caught on the step, and for example, a brush seal or the like may be used.

The fusion device 420 of the fifth embodiment, like the fourth embodiment, has a plurality of irradiation sections 423 arranged at intervals in the conveying direction Dt, including a first irradiation section 423U provided on the upstream side Dtu of the conveying direction and a second irradiation section 423D provided on the downstream side Dtd of the conveying direction.

The irradiation unit 423 irradiates the contact portion 28 of the laminate 310 being transported by the transport unit 21 from above with laser light that heats the contact portion 28. The irradiation unit 423 then irradiates the laser light while following the contact portion 28 that is being transported and moving. The irradiation unit 423 of this fifth embodiment includes an irradiation unit main body 431, a position measuring device 32 (not shown), a temperature monitoring device 33, and a control device 34 (not shown).

In this fifth embodiment, since the multiple laminates 310 are transported in close proximity in the transport direction Dt, the position of the convex portion 3 may be measured by a position measuring device 32 (not shown) at the most upstream part of the transport direction Dt. In this case, the position measurement result of the convex portion 3 may be stored in the memory of the control device 34. In addition, since the transport position of the laminate 310 can be determined from the transport speed of the transport section 21, when the laminate 310 whose position of the convex portion 3 has been measured reaches the irradiation position of the laser light, the stored information of the position measurement result for that laminate 310 may be read out, and the laser may be irradiated to the position of the contact portion 28 based on the stored information.

In this fifth embodiment, one irradiation section 423 includes one irradiation section main body 431. The irradiation section main body 431 branches the laser light transmitted from a laser oscillator (not shown) according to the number of convex portions 3 of the laminate 310 present in the width direction Dw of the transport path 24, and scans the branched laser light along the contact portion 28 in the transport direction Dt while making each of the branched laser lights follow the contact portion 28 of the transport body moving downstream in the transport direction Dtd. In this irradiation section main body 431, a galvanometer mirror can be exemplified as a configuration for making the laser light follow the contact portion 28 and a configuration for scanning the laser light in the transport direction Dt.

The areas irradiated with the laser light by the irradiation unit main body 431 are areas of a predetermined width in the second direction D2 (in other words, the conveying direction Dt) of the laminate 310. In this fifth embodiment, a single branched laser beam can be used to irradiate a predetermined number (e.g., three) of contact portions 28 arranged in the width direction Dw of the conveying path 24. The configuration for irradiating the contact portions 28 with the laser light by the irradiation unit main body 431 in these fifth embodiments is similar to the configuration for irradiating the laser light by each irradiation unit main body 331 in the fourth embodiment, and therefore a detailed description will be omitted.

In the above description of the fifth embodiment, a configuration was 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 transport direction Dt. However, the configuration is not limited to scanning the laser light in the transport direction Dt. For example, as in the fourth embodiment, the above-mentioned line beam can also be used as the laser light. In this case, the line beam can be irradiated to the laminate 310 so as to extend linearly in the transport direction Dt. The length of this line beam in the transport direction Dt can also be changed based on the temperature monitoring results of the contact portion 28.

(Action and Effect)
According to the fusion device of the fifth embodiment, the laminate 310 is conveyed with the protrusion 3 extending in the conveying direction Dt, and the plate-shaped material 2 can be pressed from the opposite side of the protrusion 3 of the three-dimensional structural material 1 by the gas supplied to the internal space 44 of the pressure body, as in the second embodiment. In addition, since the pressing plate member 25 of the fourth embodiment is not required, a device for handling the pressing plate member 25 is not required, and the laminate 310 can be easily fused. Furthermore, since the single irradiation unit body 431 can irradiate and heat all the contact portions 28 of the laminate 310 conveyed by the conveying unit 21 with laser light, it is possible to suppress the size of the pressure unit body 41 and the number of pressure unit bodies 41 from increasing, compared to the case where a plurality of irradiation unit bodies 431 are arranged in the conveying direction Dt while the laminate 310 is pressurized by the gas.

Furthermore, in the fifth embodiment, a sealing material 51 having a rotatable roller structure is used, so that even if a seam S is formed between adjacent laminates 310 in the conveying direction Dt and a step is formed at this seam S, the sealing material 51 can be prevented from getting caught on the step, and as a result, the three-dimensional structural material 1 and the plate-shaped material 2 can be smoothly fused together.

[Modifications of each embodiment]
Next, modified examples of the above-mentioned embodiments will be described with reference to the drawings. In the description of the modified examples of the above-mentioned embodiments, the configuration of the modified example will be applied to the fusion device 120 of the second embodiment as an example, but the modified examples can be applied to all the above-mentioned embodiments and all the modified examples. Therefore, the same parts as those of the above-mentioned embodiments will be denoted by the same reference numerals, and duplicated descriptions will be omitted.
FIG. 10 is a perspective view showing a schematic configuration of a fusion device in a modified example of each embodiment of the present disclosure.
As shown in FIG. 10, a fusion device 520 according to the modification of each embodiment includes a conveying unit 21, a pressurizing unit 22, an irradiating unit 23, and a preheater 60.

The preheater 60 raises the temperature of the laminate 10 before heating by the irradiation unit 23. More specifically, the preheater 60 raises the temperature of the laminate 10 (in other words, preheats it) in a temperature range lower than the melting temperature of the synthetic resin that constitutes the laminate 10 (for example, 200°C or lower). In the modified example of each embodiment, the preheater 60 includes a front-side preheater 61 that heats the front surface of the laminate 10 and a back-side preheater 62 that heats the back surface of the laminate 10. Here, the front surface refers to the surface on both sides of the laminate 10 in the vertical direction Dh that faces upward where the irradiation unit 23 is located (in other words, the anti-fusion surface 27). The back surface refers to the surface on both sides of the laminate 10 in the vertical direction Dh that faces downward.

The front surface preheaters 61 are disposed on the upstream side Dtu of the pressurizing unit 22 in the conveying direction.
On the other hand, the back side preheater 62 is disposed in a range from the most upstream position in the transport direction Dt of the transport path 24 to the most downstream position of the pressurizing unit 22 in the transport direction Dt. Although the back side preheater 62 is continuously formed in the transport direction Dt, a plurality of back side preheaters 62 may be disposed side by side in the transport direction Dt. In addition, when the laminate 10 is preheated by the above-mentioned preheater 60, the pressurizing unit 22 may be provided with a heat-resistant sealant as the sealant 51 that comes into contact with the laminate 10.

According to the modified examples of each of the above embodiments, the heating time by the irradiation unit 23 can be shortened by preheating the laminate 10 with the preheater 60. Therefore, the time required for fusing the laminate 10 can be shortened, improving productivity. In addition, by preheating the laminate 10, the output of the laser light irradiated from the irradiation unit 23 can be kept low. Therefore, it is possible to relax the requirements for the device specifications related to laser light irradiation, which also leads to a simplification of the device configuration.

[Other embodiments]
The present disclosure is not limited to the configurations of the above-described embodiments and modified examples, and design changes are possible without departing from the gist of the present disclosure.
For example, in each of the above-described embodiments, the irradiation unit 23, 323, 423 is described as irradiating the laminate 10, 310 with laser light. However, for example, light rays from a halogen lamp or the like may be concentrated and used as light rays for heating the contact portion 28.

In addition, in each of the above-mentioned embodiments and modifications, a case has been described in which the synthetic resin constituting the plate-shaped material 2 and the three-dimensional structural material 1 does not transmit the light irradiated by the irradiation unit 23. However, a synthetic resin that transmits the light irradiated by the irradiation unit 23 may be used as the synthetic resin constituting the plate-shaped material 2.

Furthermore, in each of the above-mentioned embodiments and modified examples, the protrusions 3 of the three-dimensional structural material 1 are ridges that extend linearly in a plan view. However, the shape of the protrusions 3 of the three-dimensional structural material 1 is not limited to the above-mentioned shape. For example, the three-dimensional structural material may have protrusions 3 that are intermittently formed or partially formed. In addition, although the above-mentioned embodiment and modified examples show a case where the protrusions 3 of the three-dimensional structural material 1 are convex curved surfaces, they are not limited to curved surfaces. Furthermore, the three-dimensional structural material 1 may have pin-shaped protrusions.

In each of the above-described embodiments and modified examples, the plate-shaped material 2 is formed in a sheet shape with a constant thickness. However, the shape of the plate-shaped material 2 is not limited to a constant thickness, and may be a shape with partially different thicknesses, for example, with recesses such as grooves or through holes such as slits.

The configuration of the irradiation unit 423 of the fifth embodiment described above can also be applied to the irradiation unit 323 of the fourth embodiment.

In each of the above-described embodiments and modified examples, the conveying unit 21 conveys the laminate 10 in a position in which the third direction D3 of the laminate 10 coincides with the up-down direction Dh (specifically, the vertical direction). However, the third direction D3 of the laminate 10 conveyed by the conveying unit 21 is not limited to coincide with the up-down direction Dh (specifically, the vertical direction). For example, the conveying unit 21 may convey the laminate 10 in a position in which the third direction D3 does not coincide with the up-down direction Dh (specifically, the vertical direction), for example, in a position inclined in the conveying direction Dt or the width direction Dw with respect to the horizontal direction.

In the first embodiment described above, the case where the pressure 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. In the fourth and fifth embodiments, the case where the shape of the pressure plate member 25 in a plan view is a rectangle that is substantially the same as the shape of one laminate 310 in a plan view has been described. However, the size and shape of the pressure plate member 25 in a plan view are not limited to the above dimensions and shapes. For example, the width dimension of the pressure plate member 25 may be formed smaller than the dimension of the laminate 10 in the second direction D2, or the shape of the pressure plate member 25 in a plan view may be a shape other than a rectangle. In addition, the case where the pressure plate member 25 has a dimension slightly larger than the dimension of the laminate 10 in the second direction D2 has been described as an example, but it is not limited to a slightly larger dimension, and may simply be a larger dimension.

In each of the above-described embodiments and modifications, a case has been described in which one fusion device 20, 120, 220, 320, 420, 520 is provided with two irradiation sections 23, 323, 423 spaced apart in the conveying direction Dt. However, the present invention is not limited to the case in which two irradiation sections 23, 323, 423 are provided. For example, three or more irradiation sections 23, 323, 423 may be provided to heat different contact sections 28, or only one irradiation section 23, 323, 423 may be provided to heat the contact section 28.

In each of the above-described embodiments and modifications, the temperature monitoring device 33 monitors the temperature of the anti-fusion surface 27 in a non-contact manner. However, the temperature monitoring device 33 is not limited to a configuration in which the temperature is monitored in a non-contact manner. The arrangement of the temperature monitoring device 33 is not limited to the arrangement of each of the above-described embodiments and modifications. The temperature monitoring device 33 may be arranged above the laminate 10, for example. The temperature monitoring device 33 is not limited to being provided only one for each irradiation unit 23, 323, 423. For example, multiple temperature monitoring devices 33 may be arranged for each irradiation unit 23, 323, 423.

In the above-mentioned embodiments and modifications, the temperature monitoring device 33 monitors the temperature of the irradiation position where the laser light is irradiated. 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 toward the downstream side Dtd in the conveying direction from the irradiation position. Here, the temperature of the predetermined position is a temperature that is 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, formula, etc. of the temperature of the irradiation position and the temperature of the predetermined position obtained in advance by an experiment, a simulation, etc. That is, in the above-mentioned second embodiment and fifth embodiment, the end wall 48 is described as being light-transmittable, but if the temperature of the irradiation position is not monitored from the outside of the pressure unit main body 41, a light-impermeable end wall 48 may be used. Furthermore, the range in which the temperature monitoring device 33 monitors the temperature is not limited to the entire irradiation position. For example, the temperature of a part of the irradiation position may be monitored as a representative point, and the temperature of the remaining part may be estimated based on the monitoring result.

In the above embodiment, the three-dimensional structural material 1 is described as an example in which the laser beam is not transmitted therethrough, but the three-dimensional structural material 1 may be a material that transmits the laser beam.
In addition, although an example has been described in which the conveying section 21 is a belt conveyor, another example of the conveying section 21 is a configuration in which the laminate 10 and the pressure plate member 25 are sandwiched between drive rollers on both sides in the thickness direction and sent downstream in the conveying direction Dtd.
Further, the case where the pressing plate member 25 is disposed 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 may be configured so as 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, excluding the portion to be fused.

<Additional Notes>
The fusing device according to the embodiment can be understood, for example, as follows.

(1) A fusion device 20, 120, 220, 320, 420, 520 according to a first aspect is a fusion device that fuses a three-dimensional structural material 1 formed from a material containing a synthetic resin, extending in a first direction D1 and a second direction D2 intersecting the first direction D1, and having a convex portion 3 protruding at least to one side in 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 a 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 in contact with the convex portion protruding to one side in the third direction D3, The apparatus includes a conveying section 21 which conveys a laminate 10 in which the plate-shaped material 2 is stacked from one side and the other side of three directions D3, a pressure section 22 which pressurizes the laminate 10 being conveyed by the conveying section 21 to press the plate-shaped material 2 arranged on one side of the third direction D3 against the convex portion 3 protruding on one side of the third direction D3, and an irradiation section 23 which irradiates a light beam from one side of the third direction D3, which follows a contact portion 28 that is in contact with the convex portion 3 protruding on one side of the third direction D3 of the laminate 10 pressed by the pressure section 22 and the plate-shaped material 2 arranged on one side of the third direction D3, and heats the contact portion 28.
Examples of synthetic resins include polyamide, PEEK, etc. Examples of materials containing synthetic resins include composite materials such as thermoplastic CFRP.
With this configuration, when fusing the three-dimensional structural material 1 having the multiple protrusions 3 and the plate-shaped material 2 laminated on the three-dimensional structural material 1, the three-dimensional structural material 1 and the plate-shaped material 2 laminated on the three-dimensional structural material 1 can be irradiated with light from one side of the third direction D3 by the irradiation unit 23 while the laminate 10 of the three-dimensional structural material 1 and the plate-shaped material 2 is being transported by the transport unit 21, and the contact portion 28 where the protrusions 3 protruding on one side of the third direction and the plate-shaped material 2 arranged on one side of the third direction D3 of the three-dimensional structural material 1 come into contact can be heated. Furthermore, when heating the contact portion 28, the pressure unit 22 can press the plate-shaped material 2 arranged on one side of the third direction D3 against the protrusions 3 arranged on one side of the third direction D3. In addition, since the light from the irradiation unit 23 follows the contact portion 28, the three-dimensional structural material 1 and the plate-shaped material 2 can be fused at the contact portion 28 where the protrusions 3 protruding on one side of the third direction D3 and the plate-shaped material 2 arranged on one side of the third direction D3 come into contact while the laminate 10 is being transported by the transport unit 21.
Therefore, regardless of whether the plate-shaped material 2 is light-transmitting or not, it is possible to fuse the three-dimensional structural material 1 and the plate-shaped material 2 without placing an intermediate material between the protrusion 3 and the plate-shaped material 2. This makes it possible to prevent the fusion work from becoming complicated. In addition, since the laser light is not irradiated to areas that do not require heating, it is possible to prevent the three-dimensional structural material 1 and the plate-shaped material 2 from being affected by unnecessary heating.

(2) The fusion device 20, 320 of the second aspect is the fusion device of (1), wherein the pressure applying section 22 is provided with a pressure plate member 25 formed in a plate shape that is transparent to the light beam, extends in the first direction D1 and the second direction D2, and covers the laminate 10 from one side in the third direction D3, and a pressing member 26 that presses the pressure plate member 25 from one side in the third direction D3.
An example of the pressing plate member 25 is a glass plate. An example of the pressing member 26 is a pressing roller.
This can reduce the pressing force from the pressing member 26 being locally applied to the laminate 10, thereby suppressing deformation of the laminate 10.

(3) A fusing apparatus according to a third aspect is the fusing apparatus of (2), in which the pressing member 26 is a rotatable pressing roller 26.
By pressing the pressure plate member 25 with such a rotatable pressure roller 26, it is possible to reduce friction between the pressure roller 26 and the pressure plate member 25. This makes it possible to suppress the transport of the pressure plate member 25 from being impeded, and the surface of the pressure plate member 25 from being soiled or damaged, resulting in a change in light transmittance.

(4) The fusion device 120, 520 of the fourth aspect is the fusion device of (1), wherein the pressure applying section 122 has an internal space 44 that opens toward the plate material 2, and is equipped with a pressure applying section main body 41 that contacts the plate material 2 from one side of the third direction D3, and a gas supply source 42 that supplies gas to the internal space 44 of the pressure applying section main body 41, and the pressure applying section main body 41 is equipped with an irradiation side wall 49 that is capable of transmitting the light beam.
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 this configuration, the plate 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 pressure unit main body 41. Therefore, it is possible to heat the contact portion 28 by the irradiation unit 23 while pressing the laminate 10 by the pressure unit 22. Furthermore, since the pressing plate member 25 is not required, a device for handling the pressing plate member 25 is not required, and the laminate 10 can be fused easily.

(5) A fusion device 220 according to a fifth aspect is the fusion device of (1), wherein the pressure applying section 222 includes a first pressing member 54 that presses the laminate 10 from one side of the third direction D3, and a second pressing member 55 that presses the laminate 10 from the other side of the third direction D3.
As a result, by pressing the stack 10 with the first pressing member 54 and pressing the stack 10 with the second pressing member 55, the stack 10 can be pressed from both sides in the third direction D3. Therefore, it is possible to heat the contact portion 28 with the irradiation portion 23 while pressing the stack 10 with the pressing portion 22. Furthermore, since there is no need to provide the pressing plate member 25 or the gas supply source 42, the device configuration can be prevented from becoming complicated.

(6) The fusion device 20, 120, 220, 520 relating to the sixth aspect is any one of the fusion devices (1) to (5), wherein the three-dimensional structural material 1 is corrugated with a plurality of the protrusions 3 extending in the second direction D2, the conveying section 21 conveys the laminate 10 in the first direction D1, and the irradiation section 23 irradiates the light beam along the protrusions 3 extending in the second direction D2.
This makes it possible to efficiently heat the contact portion 28 by the irradiation portion 23 while transporting the laminate 10, even when the laminate 10 is transported in a first direction D1 that intersects with the second direction D2 in which the convex portion 3 extends.

(7) The fusion device 320, 420 relating to the seventh aspect is a fusion device of (3) or (4), wherein the three-dimensional structural material 1 is corrugated with a plurality of the protrusions 3 extending in the first direction D1, the conveying section 21 conveys the laminate 10 in the second direction D2, and the irradiation section 23 irradiates the light beam along the protrusions 3 extending in the first direction D1.
This makes it possible to efficiently heat the contact portion 28 by the irradiation portion 23 while transporting the laminate 10 in the first direction D1 in which the protrusions 3 extend.

(8) The fusion device 20, 120, 220, 320, 420, 520 relating to the eighth aspect is any one of the fusion devices (1) to (7), wherein the irradiation section 23 and the pressure section 22 are provided at intervals in a direction Dt in which the laminate 10 is transported by the transport section 21, among the first direction D1 and the second direction D2, and the multiple irradiation sections 23 irradiate light rays to the different contact sections 28 to heat them.
This makes it possible to ensure sufficient irradiation time of the light beam for one contact portion 28 without reducing the conveying speed, thereby shortening the time required to fuse the three-dimensional structural material 1 and the plate-shaped material 2 together and suppressing a decrease in the reliability of the fusion.

(9) The fusion device 20, 120, 220, 320, 420, 520 relating to the ninth aspect is any one of the fusion devices (1) to (8), and includes a position measuring device 32 that measures the position of the convex portion 3 arranged on one side of the third direction D3 and the irradiation position to which the light beam 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 of the third direction D3 of the plate-shaped material 2 arranged on one side of the third direction D3, 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 of the temperature monitoring device 33.
This makes it possible to easily make the irradiation position of the laser light follow the contact portion 28 .

(10) A fusing device 520 according to a tenth aspect is any one of the fusing devices (1) to (9), and includes a preheater 60 for preheating the laminate 10.
This allows the preheater 60 to preheat the laminate 10, shortening the heating time by the irradiation unit 23. Therefore, the time required for fusing the laminate 10 can be shortened, improving productivity.

1...Three-dimensional structural material 2...Plate-shaped material 3...Convex portion 4...First edge 5...Second edge 10...Laminate 20, 120, 220, 320, 420, 520...Fusing device 21...Conveying section 22, 122, 222...Pressing section 23, 323, 423...Irradiation section 24...Conveying path 25...Pressing plate member 25t...End surface 26...Pressing roller 27...Non-fusing surface 28...Contact section 31, 331...Irradiation section main 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 main body 42...Air supply source 43...Opening 44...Internal space 46...Upstream wall 47...Downstream wall 48: end wall 49: irradiation side wall 50: inlet 51: sealing material 54: first pressing member 55: second pressing member 60: preheater 61: front side preheater 62: back side preheater O1, O2: rotating shaft

Claims (10)

A fusion device for fusing a three-dimensional structural material formed from a material containing synthetic resin, extending in a first direction and a second direction intersecting the first direction, and having a convex portion protruding at least to one side in a third direction intersecting at least the first direction and the second direction, and a plate-shaped material formed from a material containing synthetic resin, extending in the first direction and the second direction, and being disposed on one side of the three-dimensional structural material in the third direction and in contact with the convex portion protruding to one side in the third direction,
a conveying section that conveys a stack in which the plate-shaped materials are stacked on the three-dimensional structural material from one side and the other side in the third direction;
a pressurizing unit that pressurizes the stack being transported by the transport unit to press the plate-shaped material arranged on one side in the third direction against the protruding portion that protrudes on one side in the third direction;
an irradiation unit that irradiates a light beam from one side in the third direction to a contact portion between the protruding portion protruding from one side in the third direction of the laminate being pressed by the pressing unit and the plate-shaped material arranged on the one side in the third direction, the light beam following the contact portion and heating the contact portion;
Equipped with
The pressure applying unit is
a pressing plate member formed in a plate shape that is transmissive to the light beam, extends in the first direction and the second direction, and covers the stack from one side in the third direction;
a pressing member that presses the pressing plate member from one side in the third direction;
A fusing device comprising: 2. The fusing apparatus of claim 1 , wherein the pressure member is a rotatable pressure roller. A fusion device for fusing a three-dimensional structural material formed from a material containing synthetic resin, extending in a first direction and a second direction intersecting the first direction, and having a convex portion protruding at least to one side in a third direction intersecting at least the first direction and the second direction, and a plate-shaped material formed from a material containing synthetic resin, extending in the first direction and the second direction, and being disposed on one side of the three-dimensional structural material in the third direction and in contact with the convex portion protruding to one side in the third direction,
a conveying section that conveys a stack in which the plate-shaped materials are stacked on the three-dimensional structural material from one side and the other side in the third direction;
a pressurizing unit that pressurizes the stack being transported by the transport unit to press the plate-shaped material arranged on one side in the third direction against the protruding portion that protrudes on one side in the third direction;
an irradiation unit that irradiates a light beam from one side in the third direction to a contact portion between the protruding portion protruding from one side in the third direction of the laminate being pressed by the pressing unit and the plate-shaped material arranged on the one side in the third direction, the light beam following the contact portion and heating the contact portion;
Equipped with
The pressure applying unit is
a pressure unit body having an internal space that opens toward the plate-shaped material and that contacts the plate-shaped material from one side in the third direction;
A gas supply source that supplies gas to an internal space of the pressurizing unit body;
Equipped with
The pressure unit body includes:
A fusing device having an illumination sidewall that is transmissive to the light beam. The three-dimensional structural material has a corrugated plate shape including a plurality of the protrusions extending in the second direction,
The conveying unit conveys the stack in the first direction,
The fusion device according to claim 1 , wherein the irradiating section irradiates the light beam along the convex portion extending in the second direction. The three-dimensional structural material has a corrugated plate shape including a plurality of the protrusions extending in the first direction,
The conveying unit conveys the laminate in the second direction,
The fusion device according to claim 1 , wherein the irradiating section irradiates the light beam along the convex portion extending in the first direction. The irradiation unit and the pressurization unit are
A plurality of the first and second directions are provided at intervals in a direction in which the laminate is transported by the transport unit,
The fusion device according to claim 1 , wherein the plurality of irradiating sections irradiate different contact sections with the light beam to heat them. a position measuring device that measures a position of the convex portion disposed on one side of the third direction and an 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 of the plate-shaped material arranged on one side of the third direction;
a control device that controls the irradiation unit based on a measurement result by the position measurement device and a monitoring result by the temperature monitoring device;
The fusing apparatus according to claim 1 , further comprising: A fusion device for fusing a three-dimensional structural material formed from a material containing synthetic resin, extending in a first direction and a second direction intersecting the first direction, and having a convex portion protruding at least to one side in a third direction intersecting at least the first direction and the second direction, and a plate-shaped material formed from a material containing synthetic resin, extending in the first direction and the second direction, and being disposed on one side of the three-dimensional structural material in the third direction and in contact with the convex portion protruding to one side in the third direction,
a conveying section that conveys a stack in which the plate-shaped materials are stacked on the three-dimensional structural material from one side and the other side in the third direction;
a pressurizing unit that pressurizes the stack being transported by the transport unit to press the plate-shaped material arranged on one side in the third direction against the protruding portion that protrudes on one side in the third direction;
an irradiation unit that irradiates a light beam from one side in the third direction to a contact portion between the protruding portion protruding from one side in the third direction of the laminate being pressed by the pressing unit and the plate-shaped material arranged on the one side in the third direction, the light beam following the contact portion and heating the contact portion;
a position measuring device that measures a position of the convex portion disposed on one side of the third direction and an 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 of the plate-shaped material arranged on one side of the third direction;
a control device that controls the irradiation unit based on a measurement result by the position measurement device and a monitoring result by the temperature monitoring device;
A fusing device comprising: The fusing apparatus according to claim 1 , further comprising a preheater for preheating the laminate. A fusion device for fusing a three-dimensional structural material formed from a material containing synthetic resin, extending in a first direction and a second direction intersecting the first direction, and having a convex portion protruding at least to one side in a third direction intersecting at least the first direction and the second direction, and a plate-shaped material formed from a material containing synthetic resin, extending in the first direction and the second direction, and being disposed on one side of the three-dimensional structural material in the third direction and in contact with the convex portion protruding to one side in the third direction,
a conveying section that conveys a stack in which the plate-shaped materials are stacked on the three-dimensional structural material from one side and the other side in the third direction;
a pressurizing unit that pressurizes the stack being transported by the transport unit to press the plate-shaped material arranged on one side in the third direction against the protruding portion that protrudes on one side in the third direction;
an irradiation unit that irradiates a light beam from one side in the third direction to a contact portion between the protruding portion protruding from one side in the third direction of the laminate being pressed by the pressing unit and the plate-shaped material arranged on the one side in the third direction, the light beam following the contact portion and heating the contact portion;
Equipped with
A fusing device including a preheater for preheating the laminate.

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