Waterproof sheet joining device and waterproof sheet joining method

Abstract

To provide a waterproof sheet bonding device that can supply a liquid material containing a solvent or an adhesive to an overlapping portion between waterproof sheets to be supplied with the liquid material, with excellent accuracy, even when a floor to be covered with the waterproof sheet includes a level difference, and a waterproof sheet bonding method using the waterproof sheet bonding device.SOLUTION: A waterproof sheet bonding device 1 has: a supply system 10 that supplies a liquid material to a waterproof sheet 100B from a nozzle 5; and a travel system 9 that has a vehicle body 91 and a wheel 92B rotatably supported by the vehicle body 91 and travels together with the supply system 10 as the wheel 92B rotates. The travel system 9 has a nozzle support part 3 that is linked to the front side of the vehicle body 91 and supports the nozzle 5. The nozzle support part 3 supports the nozzle 5 to be movable in the vertical direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a waterproof sheet joining device and a waterproof sheet joining method. [Background technology]

[0002] In recent years, with the demand for higher durability in buildings, sheet waterproofing structures in which waterproof sheets are laid and constructed are being adopted on the rooftops and floors of verandas and the like of many buildings.

[0003] In this sheet waterproofing structure, when laying a waterproof sheet on the floor portion serving as the main body, a known configuration is used in which, for example, the edges of two waterproof sheets are overlapped one on top of the other and the overlapping portions are joined with adhesive.

[0004] When waterproof sheets are joined together at overlapping portions with an adhesive, it has been proposed to supply adhesive to the overlapping portions using a supplying device (see, for example, Patent Document 1).

[0005] The supply device described in Patent Document 1 has a tank for storing adhesive, a tube connected to the tank through which the adhesive passes, and a nozzle connected to the tip of the tube located opposite the tank and for discharging (supplying) the adhesive to the overlapping portion.

[0006] With this supply device, when the supply device is moved along the overlapping portion of the waterproof sheets, adhesive stored in a tank is supplied to the overlapping portion of the waterproof sheets from the tip of the nozzle via a tube, and then the upper waterproof sheet is pressed from the front side with a roller provided on the supply device, thereby joining the waterproof sheets at the overlapping portion.

[0007] In a supply device of this configuration, in order to stably supply adhesive to the overlapping portion of the waterproof sheets, it is necessary for the tip of the nozzle to be positioned without misalignment in correspondence with the overlapping portion of the waterproof sheets when the supply device moves along the overlapping portion of the waterproof sheets.

[0008] However, in such a supply device, the nozzle is generally fixed to the vehicle body on which the supply device is mounted. Therefore, if the floor on which the waterproof sheet is laid has unevenness, i.e., a step, when the supply device passes a position corresponding to the step, the tip of the nozzle will be misaligned from the overlapping portion of the waterproof sheets, making it technically difficult to supply adhesive to the overlapping portion of the waterproof sheets with high precision.

[0009] Furthermore, this problem is not limited to cases where the supply device described in Patent Document 1 is used to supply adhesive stored in a tank to the overlapping areas of waterproof sheets, but also occurs when a solvent is stored in a tank as a liquid material instead of adhesive, and this solvent is supplied to the overlapping areas of waterproof sheets to weld them together using the solvent. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Publication number 05-012027 Summary of the Invention [Problem to be solved by the invention]

[0011] The object of the present invention is to provide a waterproof sheet joining device that can supply liquid material containing a solvent or adhesive with excellent precision to the overlapping area between waterproof sheets to which the liquid material should be supplied, even if a step is formed on the floor on which the waterproof sheets are laid, and a waterproof sheet joining method using such a waterproof sheet joining device. [Means for solving the problem]

[0012] Such objectives are as follows: (1) 5 This is achieved by the present invention described in (1) A waterproof sheet joining device used when laying a waterproof sheet on a floor surface as a structure using a liquid material containing a solvent or adhesive, a supply system that supplies the liquid material to the waterproof sheet; a traveling system having a vehicle body and a first wheel rotatably supported on the vehicle body, the traveling system traveling along a forward direction by rotation of the first wheel together with the supply system; The first waterproof sheet and the second waterproof sheet of the waterproof sheet are overlapped at their edges along the forward direction with the second waterproof sheet on the bottom, and the liquid material is supplied to the overlapping portion formed by this. The first waterproof sheet and the second waterproof sheet are joined together. The liquid material is supplied to the overlapping portion where the first waterproof sheet and the second waterproof sheet overlap by a nozzle provided in the supply system, and then the overlapping portion to which the liquid material has been supplied is rolled from the front side of the first waterproof sheet by a rotatably supported roller provided in the traveling system, the traveling system includes a nozzle support portion connected to the vehicle body at a front side of the vehicle body and supporting the nozzle, The nozzle support portion supports the nozzle so that the nozzle can move in the vertical direction, and also supports the nozzle so that the nozzle can rotate around the vertical direction as a rotation center. And, The nozzle support portion includes a first support portion connected to the vehicle body, a second support portion that supports the nozzle, a third support portion that connects the first support portion and the second support portion, and a second wheel that is provided at a lower end of the second support portion and in contact with the waterproof sheet and rotates as the vehicle body moves forward; The third support portion is supported by the first support portion so as to be rotatable about the vertical direction as a rotation center, and thereby the nozzle is supported by the nozzle support portion so as to be rotatable about the vertical direction as a rotation center. A waterproof sheet joining device characterized by the above.

[0018] ( 2 ) A waterproof sheet joining device used when laying a waterproof waterproof sheet on a floor surface as a structure using a liquid material containing a solvent or adhesive, a supply system that supplies the liquid material to the waterproof sheet; a traveling system having a vehicle body and a first wheel rotatably supported on the vehicle body, the traveling system traveling along a forward direction by rotation of the first wheel together with the supply system; The first waterproof sheet and the second waterproof sheet of the waterproof sheet are overlapped at their edges along the forward direction with the second waterproof sheet on the bottom, and the liquid material is supplied to the overlapping portion formed by this. The first waterproof sheet and the second waterproof sheet are joined together. The liquid material is supplied to the overlapping portion where the first waterproof sheet and the second waterproof sheet overlap by a nozzle provided in the supply system, and then the overlapping portion to which the liquid material has been supplied is rolled from the front side of the first waterproof sheet by a rotatably supported roller provided in the traveling system, the traveling system includes a nozzle support portion connected to the vehicle body at a front side of the vehicle body and supporting the nozzle, the nozzle support portion supports the nozzle so as to be movable in the up and down direction, The nozzle support portion includes a first support portion connected to the vehicle body, a second support portion that supports the nozzle, a third support portion that connects the first support portion and the second support portion, and two second wheels that are provided at the lower end of the second support portion and in contact with the waterproof sheet and rotate as the vehicle body moves forward; The two second wheels are provided at a lower end of the second support part with a gap therebetween, A waterproof sheet joining device characterized in that the nozzle is configured to be positioned corresponding to the overlapping portion with its tip protruding from the gap. ( 3 The second support portion is supported by the third support portion so as to be movable in the up-down direction, and thereby the nozzle is supported by the nozzle support portion so as to be movable in the up-down direction. (1) or (2) The waterproof sheet joining device according to claim 1. ( 4 The nozzle support portion supports the nozzle so that the nozzle can move downward due to its own weight. 3 ) The waterproof sheet joining device described in any one of the above.

[0019] ( 5 ) (1) above or ( 410. A waterproof sheet joining method comprising a joining step of joining the waterproof sheets using the waterproof sheet joining device described in any one of the above. [Effects of the Invention]

[0020] According to the present invention, when a liquid material containing a solvent or adhesive is supplied to an overlapping portion of waterproof sheets using a waterproof sheet joining device, the liquid material can be supplied to the overlapping portion with high precision even if a step is formed in the floor portion corresponding to the overlapping portion. Therefore, a worker can use the waterproof sheet joining device to join the waterproof sheets with high precision at the overlapping portion of the waterproof sheets. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a perspective view showing an embodiment of a waterproof sheet joining device of the present invention. [Figure 2] FIG. 2 is a side view seen from the direction of arrow A in FIG. [Figure 3] FIG. 2 is a front view seen from the direction of arrow C in FIG. [Figure 4] FIG. 2 is a plan view seen from the direction of arrow B in FIG. [Figure 5] 2 is a schematic diagram showing the configuration of a supply system provided in the waterproof sheet joining device shown in FIG. 1. FIG. [Figure 6] 2 is a partially enlarged side view showing a pressing part provided in the waterproof sheet joining device shown in FIG. 1. FIG. [Figure 7] 2 is a partially enlarged perspective view showing an enlarged nozzle support part provided in the waterproof sheet joining device shown in FIG. 1. FIG. [Figure 8] 2 is a partially enlarged perspective view showing an enlarged nozzle support part provided in the waterproof sheet joining device shown in FIG. 1. FIG. [Figure 9] FIG. 2 is an exploded perspective view showing an example of the waterproof sheet in an installed state. [Figure 10] FIG. 2 is an exploded perspective view showing an example of the waterproof sheet in an installed state. [Figure 11] 10 is an exploded perspective view showing another example of the construction of the waterproof sheet shown in FIG. 9 in an installed state. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0022] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A waterproof sheet joining device and a waterproof sheet joining method according to the present invention will be described in detail below with reference to preferred embodiments shown in the accompanying drawings.

[0023] The waterproof sheet joining device of the present invention is a waterproof sheet joining device used when laying a waterproof waterproof sheet on a floor surface as a structural body using a liquid material containing a solvent or adhesive, and is equipped with a supply system that supplies the liquid material to the waterproof sheet, and a traveling system that has a vehicle body and a first wheel rotatably supported on the vehicle body and travels along a forward direction together with the supply system by rotation of the first wheel, and the waterproof sheet joining device applies the liquid material to an overlapping portion formed by overlapping the edges of the first waterproof sheet and second waterproof sheet with the second waterproof sheet on the underside along the forward direction. By supplying the liquid material, the first waterproof sheet and the second waterproof sheet are joined together, and after the liquid material is supplied to the overlapping area where the first waterproof sheet and the second waterproof sheet are overlapped by a nozzle provided in the supply system, a rotatably supported roller provided in the running system rolls and compresses the overlapping area where the liquid material has been supplied from the front side of the first waterproof sheet, and the running system is connected to the vehicle body on the front side of the vehicle body and has a nozzle support part that supports the nozzle, and the nozzle support part supports the nozzle so that it can move in the vertical direction.

[0024] By configuring the waterproof sheet joining device in this way, when supplying a liquid material containing a solvent or adhesive to the overlapping portion of two waterproof sheets, the liquid material can be supplied to the overlapping portion with high precision even if a step is formed in the floor portion corresponding to the overlapping portion. Therefore, a worker can use the waterproof sheet joining device to join the waterproof sheets at their overlapping portion with high precision. This waterproof sheet joining device will be described in detail below.

[0025] <<Waterproof sheet joining device>> Figure 1 is an oblique view showing an embodiment of the waterproof sheet joining device of the present invention, Figure 2 is a side view seen from the direction of arrow A in Figure 1, Figure 3 is a front view seen from the direction of arrow C in Figure 1, Figure 4 is a plan view seen from the direction of arrow B in Figure 1, Figure 5 is a schematic diagram showing the configuration of the supply system provided in the waterproof sheet joining device shown in Figure 1, Figure 6 is a partially enlarged side view showing an enlarged pressing portion provided in the waterproof sheet joining device shown in Figure 1, Figures 7 and 8 are partially enlarged oblique views showing an enlarged nozzle support portion provided in the waterproof sheet joining device shown in Figure 1, Figure 9 is an exploded oblique view showing an example of the installed state of the waterproof sheet, Figure 10 is an exploded oblique view showing an example of the installed state of the waterproof sheet, and Figure 11 is an exploded oblique view showing another example of the configured state of the waterproof sheet shown in Figure 9.

[0026] In Figure 7, (a) shows a state in which the tip of the nozzle is located on the -y-axis side, and (b) shows a state in which the tip of the nozzle is located on the +y-axis side.In Figure 8, (a) shows a state in which the nozzle is located relatively lower than the vehicle body equipped with the running system, and (b) shows a state in which the nozzle is located relatively higher than the vehicle body equipped with the running system.

[0027] For ease of explanation, the upper side in Figures 1 to 3 and 5 to 11 will be referred to as the "upper (or upper)" or "front side," and the lower side will be referred to as the "lower (or lower)" or "rear side." The diagonally lower left side in Figures 1 and 9 to 11, the left side in Figures 2 and 5 to 6, the near side of the page in Figure 3, the lower side in Figure 4, and the diagonally lower right side in Figures 7 and 8 will be referred to as the "front (or forward)." The diagonally upper right side in Figures 1 and 9 to 11, the right side in Figures 2 and 5 to 6, the far side of the page in Figure 3, the upper side in Figure 4, and the diagonally upper left side in Figures 7 and 8 will be referred to as the "rear (or rear)." As shown in Figures 1 to 6, three mutually orthogonal axes are the x-axis, y-axis, and z-axis. The xy plane containing the x-axis and y-axis is horizontal, and the z-axis is vertical.

[0028] The waterproof sheet joining device 1 (hereinafter sometimes simply referred to as the "joining device") shown in Figure 1 is a device used to join a waterproof waterproof sheet 100 at an overlapping portion 101 of the waterproof sheet 100 using a liquid material such as a solvent Q (soluble solvent) or an adhesive, but in this embodiment, we will explain the case where joining is performed by welding using the solvent Q.

[0029] Furthermore, the waterproof sheet 100 is laid (constructed) on a structural body, which may be, but is not limited to, a rooftop or a balcony, for example, and the waterproof sheet 100 is laid (constructed) on the floor surface (floor portion) of the structural body using the joining device 1.

[0030] Incidentally, the manner in which the waterproof sheets 100 are laid on the floor surface of the structure by joining the waterproof sheets 100 together at overlapping portions 101 where the edges overlap using the joining device 1 is not particularly limited, and examples include the manners shown in Figures 9 and 10.

[0031] The embodiment shown in FIG. 9 includes a strip-shaped waterproof sheet 100 (hereinafter sometimes referred to as "waterproof sheet 100A") and two waterproof sheets 100 (hereinafter sometimes referred to as "waterproof sheets 100B") that are wider than the waterproof sheet 100A. The waterproof sheets 100B are laid adjacent to each other with a gap between them on the floor surface of the building frame. The waterproof sheet 100A is laid from above so as to fill the gaps between the waterproof sheets 100B. The waterproof sheet 100A and each waterproof sheet 100B overlap at their edges to form overlapping portions 101, and these overlapping portions 101 become joining margins and are joined using a joining device 1, thereby laying the waterproof sheet 100 on the floor surface. In other words, the floor surface (floor portion) of the building frame is covered with the waterproof sheet 100, thereby waterproofing the floor surface of the building frame.

[0032] In the embodiment shown in FIG. 9, the waterproof sheet 100B can be replaced with a heat insulating panel 150B, i.e., a so-called "PVC steel plate." Specifically, as shown in FIG. 11, two adjacent heat insulating panels 150B are arranged with their edges butted together without any space between them, and are fixed to the main building 160 in this state. A fire-resistant sheet 155 is then joined to cover the boundary 151 formed by the butted edges of the two heat insulating panels 150B, and a waterproof sheet 100A is further joined to encompass the area of ​​the boundary 151 where the fire-resistant sheet 155 is joined. A joining device 1 is used to join the waterproof sheet 100A to the boundary 151 between the heat insulating panels 150B via the fire-resistant sheet 155. By joining the waterproof sheet 100A, the floor surface formed by laying the heat insulating panels 150B on the main building 160 is waterproofed.

[0033] Here, the heat insulating panel 150B is composed of a substrate whose inner layer is made of various steel plates (metal plates) such as Galvalume steel plate (registered trademark) or stainless steel plate, or a heat insulating layer, and whose outermost layer is a waterproof layer (PVC layer) made of a sheet (waterproof sheet) having the same waterproof properties as the waterproof sheet 100B. That is, in the present invention, the waterproof layer formed on the substrate is also referred to as the waterproof sheet 100B (second waterproof sheet). In other words, in the embodiment shown in Figure 11, a joining device 1 is used to join the waterproof layer formed on the substrate and the waterproof sheet 100A.

[0034] Note that either one of the two heat insulating panels 150B shown in FIG. 11 can be made of a waterproof sheet 100B depending on the configuration of the main house 160 or the like.

[0035] In addition, in the embodiment shown in Figure 9, the two waterproof sheets 100B are arranged adjacent to each other with a gap between them, but this is not limited to this, and as shown in Figure 11, the two insulating panels 150B (in other words, the waterproof sheets 100B) can also be arranged so that the edges of the two insulating panels 150B are butted against each other without leaving any gap between them.

[0036] In the embodiment shown in Figure 10, waterproof sheets 100B (hereinafter, the upper one may be referred to as "waterproof sheet 100BA" and the lower one as "waterproof sheet 100BB") are laid parallel to the floor surface of the building frame, and overlap at their edges to form overlapping portion 101 (overlapping portion). This overlapping portion 101 serves as a joining margin, and the waterproof sheet 100 is laid on the floor surface by joining the sheets using joining device 1. In other words, the floor surface (floor portion) of the building frame is covered with waterproof sheet 100, thereby waterproofing the floor surface of the building frame.

[0037] In the embodiment shown in FIG. 10, the lower waterproof sheet 100BB of the two waterproof sheets 100B may be replaced with the heat insulating panel 150B described above.

[0038] In this embodiment, as an example, a case where the joining device 1 is used for joining in the manner shown in FIG. 10 will be described.

[0039] The constituent materials of the waterproof sheet 100 laid on the floor surface are not particularly limited, but examples include vinyl chloride resins such as polyvinyl chloride, polyolefin resins, and ethylene-vinyl acetate copolymers. One or a combination of two or more of these can be used, but polyvinyl chloride is preferred. Polyvinyl chloride has excellent solvent welding properties. Therefore, by welding the waterproof sheets 100 together using the solvent Q supplied from the joining device 1, the adhesion between the waterproof sheets 100 can be improved.

[0040] A joining device 1 is used to lay the waterproof sheet 100 on the floor surface of the building structure as described above, and as shown in Figure 1, this joining device 1 is equipped with a supply system 10 that supplies the solvent Q to the waterproof sheet 100, and a traveling system 9 that travels together with the supply system 10. The configuration of each part of the joining device 1 will be described below.

[0041] The traveling system 9 has a vehicle body 91 that travels together with the supply system 10, a pressing unit 7 having a roller 92A rotatably supported on the bottom of the vehicle body 91, a nozzle support unit 3 that supports the nozzle 5 of the supply system 10 on the vehicle body 91, a drive unit 6 that drives the vehicle body 91, and a handle 93 that is supported and fixed on the top of the vehicle body 91.

[0042] The vehicle body 91 includes a frame 94 and four wheels 92B rotatably supported on the lower part of the vehicle body 91 (frame 94).

[0043] The frame 94 has a top plate 941, and the top plate 941 alone constitutes the frame 94 in the shape of a flat plate.

[0044] As shown in FIGS. 1 to 4 , two pairs of wheels 92B (first wheels) are arranged on the underside of the frame 94 (top plate 941) at four corners of the top plate 941, with each pair facing each other. Each wheel 92B is rotatably supported by the top plate 941. The rotation of each wheel 92B allows the joining device 1 to travel together with the supply system 10. That is, by driving the drive unit 6 described below, the wheels 92B are rotated in the +x-axis direction, causing the vehicle body 91, i.e., the joining device 1, to move forward in the +x-axis direction. The wheels 92B are rotated in the −x-axis direction, causing the vehicle body 91 to move backward in the −x-axis direction. When the joining device 1 moves forward in the +x-axis direction and backward in the −x-axis direction, the opposing wheels 92B each travel along a pair of wheel travel lines Lk along the x-axis direction (forward direction). More specifically, of the wheels 92B facing each other in the y-axis direction, the wheel 92B located on the +y-axis side travels on the wheel running line Lk1, and the wheel 92B located on the -y-axis side travels on the wheel running line Lk2.

[0045] In this embodiment, as shown in Figures 1 to 4 and 6, a total of five pressing portions 7 are connected to the vehicle body 91 in a line along the x-axis direction, between the wheels 92B facing each other in the y-axis direction, i.e., at positions between the paired wheel running lines Lk along the x-axis direction.

[0046] Each pressing portion 7 also has two side plates 71 arranged in the y-axis direction and facing each other with a gap between them, a roller 92A arranged between the two side plates 71, and two connecting members 72 connected to the two side plates 71, respectively.

[0047] In the pressing unit 7, the roller 92A is rotatably supported by the two side plates 71 via axles between the two side plates 71. Two connecting members 72, which are connected to the upper ends of the two side plates 71, are connected to the top plate 941, so that the roller 92A is rotatably supported with respect to the body 91 (top plate 941).

[0048] The rollers 92A have a width set large enough to encompass the width of the overlapping portion 101. As the vehicle body 91, i.e., the joining device 1, travels, the wheels 92B rotate, and the rollers 92A also rotate. Therefore, for example, when the vehicle body 91 is moved forward in the +x-axis direction by driving the drive unit 6 (described later), the wheels 92B rotate in the +x-axis direction, and the rollers 92A also rotate in the +x-axis direction. When the vehicle body 91 is moved backward in the -x-axis direction, the wheels 92B rotate in the -x-axis direction, and the rollers 92A also rotate in the -x-axis direction. When the vehicle body 91 moves forward in the +x-axis direction and backward in the -x-axis direction, the rollers 92A travel on a roller travel line Ls along the x-axis direction, between the pair of wheel travel lines Lk on which the opposing wheels 92B travel. The position at which this roller 92A runs corresponds to the overlapping portion 101 formed by the waterproof sheets 100BB and 100BA overlapping at their edges, and after solvent Q is supplied from a nozzle 5 provided in a supply system 10 described later, this overlapping portion 101 is rolled down from the front side of the waterproof sheet 100BA by the roller 92A, thereby joining the waterproof sheets 100BA and 100BB.

[0049] Furthermore, the roller 92A having such a configuration is arranged between two side plates 71 in the pressing section 7, and is further connected to the frame 94 (top plate 941) via two connecting members 72 connected to these two side plates 71, respectively.

[0050] The connecting member 72 has a shaft portion 74 connected to the top plate 941 so as to be slidable in the up and down direction, and a coil portion 73 that is coil-shaped (spring-shaped) and has the shaft portion 74 inserted into the inside thereof below the top plate 941. The shaft portion 74 is connected to the top plate 941 in a state where it resists the spring force of the coil portion 73.

[0051] The connecting member 72 having such a configuration allows the pressing portion 7 equipped with the roller 92A to be biased downward (negative z-axis direction) relative to the top plate 941 so as to be swingable in the vertical direction (z-axis direction) (see Figures 2, 3, and 6).

[0052] Therefore, the pressing unit 7, i.e., roller 92A, is biased downward (in the -z-axis direction) and can swing up and down (in the z-axis direction) relative to the top plate 941 (car body 91). Therefore, when the waterproof sheets 100BA and 100BB are joined by rolling the waterproof sheets 100BA from the front side with the roller 92A provided in the pressing unit 7, the magnitude of the load applied to the waterproof sheet 100BA can be set to a desired magnitude by inserting the coil portion 73, which has a different biasing force, into the shaft portion 74.

[0053] Furthermore, when joining waterproof sheets 100BA and 100BB, even if the floor on which waterproof sheet 100 is laid has unevenness, i.e., steps, roller 92A can be made to conform to the shape of these unevenness. Therefore, roller 92A can overcome these unevenness, and waterproof sheets 100BA and 100BB can be reliably joined even in waterproof sheet 100 corresponding to the position where the floor has unevenness.

[0054] Furthermore, as shown in Figures 2 and 6, a total of five pressing units 7, each equipped with a single roller 92A, are connected to the vehicle body 91 in a line along the x-axis direction, independently of each other. In this way, one roller 92A that can conform to the uneven shape is provided for each pressing unit 7, and multiple pressing units 7 (five in this embodiment) are connected to the vehicle body 91 independently along the x-axis direction. Therefore, each roller 92A can independently conform to the uneven shape without affecting the roller 92A adjacent to it in the x-axis direction. This allows the waterproof sheet 100BA and the waterproof sheet 100BB to be joined with greater precision.

[0055] 2 etc., the number of pressing units 7 arranged on the vehicle body 91 (frame 94), i.e., the number of rollers 92A arranged along the +x-axis direction, i.e., along the roller running line Ls, is five, but the number may be more or less than five, is not limited to this number, and may be one. However, by providing multiple pressing units as in this embodiment, the waterproof sheet 100BA and the waterproof sheet 100BB can be joined more reliably.

[0056] The nozzle support part 3 supports the nozzle 5 of the supply system 10, and in this embodiment, as shown in Figures 1 to 4, 7 and 8, is connected to the vehicle body 91 on the front side of the vehicle body 91, i.e., on the +x-axis direction side of the vehicle body 91. As a result, the nozzle support part 3 positions the nozzle 5 on the front side (+x-axis direction side) of the roller 92A provided in the pressing part 7, corresponding to the overlapping part 101 between the waterproof sheets 100B.

[0057] As shown in Figures 7 and 8, the nozzle support part 3 includes a first support part 33 connected to the vehicle body 91, a second support part 34 that supports the nozzle 5, and a third support part 35 that connects the first support part 33 and the second support part 34.

[0058] The first support part 33 has a side plate 331, a top plate 332, a bottom plate 334, a shaft part 335, and two connecting plates 336. Of these, the side plate 331 is an elongated member extending in the z-axis direction, and its upper and lower ends are joined to the top plate 332 and the bottom plate 334, which are aligned along the x-axis direction. The shaft part 335 has an overall cylindrical shape and is arranged along the z-axis direction, and its upper and lower ends are joined to the top plate 332 and the bottom plate 334, respectively. The two connecting plates 336 are also elongated members extending in the x-axis direction, and are arranged facing each other with a gap between them. One end is joined to the lower end of the side plate 331 and the other end is joined to the front of the vehicle body 91, thereby fixing the first support part 33 and, ultimately, the nozzle support part 3 to the vehicle body 91.

[0059] The second support unit 34 includes a side plate 341, two wheels 343 rotatably supported on the side plate 341, a connecting member 344 connecting the flow path 31 and the nozzle 5, and a fixing member 345 fixing the connecting member 344 to the side plate 341. Of these, the side plate 341 is an elongated member extending in the z-axis direction, and is provided on one side thereof with a guide rail 342 extending in the z-axis direction. The two wheels 343 are disk-shaped and are supported at the lower end of the side plate 341 on the side surface on which the guide rail 342 of the side plate 341 is formed, with a gap between them, so as to be rotatable about a rotation axis extending in the thickness direction of the side plate 341. When the vehicle body 91 moves forward, the wheels 343 rotate, causing the second support unit 34 to travel together with the vehicle body 91 while supporting the nozzle 5. Furthermore, fixing member 345 is provided on the other side of side plate 341 opposite to the side on which guide rail 342 is formed, and connecting member 344 is inserted and fixed into a hole formed thereby, thereby fixing nozzle 5 and flow path 31 to second support part 34. At this time, nozzle 5 is configured to be inserted into groove 346 formed in the lower end of side plate 341 so as to correspond to the gap between two wheels 343 (second wheels), so that the tip side of nozzle 5 protrudes from one side of side plate 341 on which guide rail 342 is formed. With this configuration, by having nozzle 5 protrude from the one side, the tip side of nozzle 5 can be stably positioned corresponding to overlapping portion 101 of waterproof sheets 100B.

[0060] Furthermore, the third support part 35 has a side plate 352, a bottom plate 351, and a movable plate 353. Of these, the side plate 352 is an elongated member extending in the z-axis direction, and the bottom plate 351, which is an elongated member extending in the y-axis direction, is joined to its lower end, and the movable plate 353 is joined to its upper end. The movable plate 353 has a groove 354 that extends along the z-axis direction and is formed to correspond to the shape of the guide rail 342 provided on the side plate 341 of the second support part 34. The guide rail 342 is inserted into this groove 354, thereby fixing the second support part 34 to the third support part 35 so as to be movable up and down. In addition, the bottom plate 351 has a hole 355 that penetrates in its thickness direction at the end opposite to where the side plate 352 is joined, and an axis 335 provided on the first support part 33 is inserted into this hole 355, so that the third support part 35 and therefore the second support part 34 are fixed to the first support part 33 so as to be rotatable around the axis 335 extending in the z-axis direction (up and down direction) as the rotation center.

[0061] In the nozzle support part 3 having the first support part 33, second support part 34, and third support part 35 configured as described above, as described above, the third support part 35 and therefore the second support part 34 are fixed to the first support part 33 fixed to the vehicle body 91 so as to be rotatable around the shaft part 335 provided on the first support part 33. Therefore, by rotating the second support part 34 relative to the first support part 33, as shown in Fig. 7(a), the nozzle 5 fixed to the second support part 34 can also be rotated in the directions of arrows β1 and β2 around the axis α of the shaft part 335 as the rotation center, i.e., around the z axis.

[0062] As a result, prior to joining the waterproof sheets 100B together using the joining device 1, when inserting the nozzle 5 into the back side of the upper waterproof sheet 100BA, the nozzle 5 is rotated in the direction of arrow β1 so that the tip of the nozzle 5 is positioned on the +y-axis side (see Figure 7(b)), and then the nozzle 5 is rotated in the direction of arrow β2 so that the tip of the nozzle 5 is positioned on the -y-axis side (see Figure 7(a)), making the insertion operation easy. Furthermore, when removing the nozzle 5 from the back side of the waterproof sheet 100B, the nozzle 5 can be removed by rotating it again in the direction of arrow β1. In this way, by making the nozzle 5 rotatable around the z-axis, the insertion and removal operations of the nozzle 5 can be performed quickly and smoothly.

[0063] Furthermore, in the nozzle support unit 3, as described above, the second support unit 34 is fixed to the first support unit 33, which is fixed to the vehicle body 91, so as to be movable (up and down) along the z-axis direction, i.e., the vertical direction, along which the guide rail 342 provided on the second support unit 34 extends. Therefore, as shown in FIG. 8(a), the vertical movement of the second support unit 34 relative to the first support unit 33 also moves the nozzle 5 fixed to the second support unit 34 in the directions of arrows β3 and β4 along the guide rail 342, i.e., the z-axis direction. Therefore, by continuously moving the nozzle 5 up and down, the nozzle support unit 3 can assume both a state in which the nozzle 5 is positioned below the first support unit 33 and thus the vehicle body 91 (see FIG. 8(a)), and a state in which the nozzle 5 is positioned above the first support unit 33 and thus the vehicle body 91 (see FIG. 8(b)). In other words, the nozzle support unit 3 supports the nozzle 5 so as to be movable in the vertical direction. Furthermore, the nozzle support part 3 is configured so that the nozzle 5 can be positioned below the first support part 33 (see FIG. 8(a)) due to the weight of the second support part 34. In other words, the nozzle support part 3 supports the nozzle 5 so that it can move downward due to the weight of the second support part 34 (nozzle support part 3).

[0064] The second support part 34 has a wheel 343 (second wheel) supported at the lower end of the side plate 341 (second support part 34) so ​​as to be rotatable about the axis of rotation in the thickness direction of the side surface of the side plate 341. As a result, the wheel 343 is configured to be able to rotate about the y-axis direction as a rotation center when the nozzle 5 is inserted behind the upper waterproof sheet 100BA, i.e., into the overlapping portion 101 between the waterproof sheets 100B, and positioned along the y-axis direction as shown in FIG. 8(a). Therefore, when the vehicle body 91 moves forward along the x-axis direction, the nozzle support part 3 also moves forward while connected to the vehicle body 91, and at this time, the wheel 343 rotates while in contact with the waterproof sheet 100BB.

[0065] In this way, when the vehicle body 91 moves forward, i.e., when the joining device 1 moves forward, the wheel 343 provided at the lower end of the side plate 341 of the nozzle support part 3 rotates while in contact with the waterproof sheet 100BB, while the side plate 341 of the second support part 34 moves forward, thereby accurately suppressing or preventing the nozzle 5 fixed to the side plate 341 from shifting out of position from the overlapping part 101 between the waterproof sheets 100B.

[0066] In particular, in the present invention, the nozzle 5 continuously moves up and down, allowing it to be positioned either below or above the first support member 33. Furthermore, the nozzle 5 can also move downward due to the weight of the second support member 34. Therefore, even if the floor on which the waterproof sheet 100 is laid has unevenness, i.e., steps, when joining the waterproof sheets 100BA and 100BB, the side plate 341 equipped with the wheels 343, i.e., the second support member 34, can rotate while conforming to the shape of the unevenness. Therefore, the nozzle 5 fixed to the side plate 341 can also conform to the shape of the unevenness, thereby more accurately suppressing or preventing the nozzle 5 from shifting from the overlapping portion 101 of the waterproof sheets 100B. This allows the solvent Q to be supplied to the overlapping portion 101 of the waterproof sheets 100B with excellent precision.

[0067] Furthermore, if it is possible to reduce friction between the lower end of the side plate 341 provided on the second support part 34 and the surface of the waterproof sheet 100BB when the vehicle body 91 moves forward, the placement of the wheel 343 on the lower end of the side plate 341 can be omitted.

[0068] The drive unit 6 is coupled to the vehicle body 91 and has a drive source 60 and a force transmission unit 80, and drives the vehicle body 91 by transmitting the force generated by the drive source 60 to the vehicle body 91 via the force transmission unit 80. In other words, by driving the vehicle body 91 through the operation of the drive unit 6, the joining device 1 moves forward along the +x-axis direction or backward along the -x-axis direction.

[0069] The driving source 60 generates a force (power) to drive the vehicle body 91, and may be of any configuration that can generate this power; for example, an engine, a motor, etc. may be used. In this embodiment, however, as shown in Figures 1 to 4, an electric screwdriver as a machine tool equipped with a motor is detachably arranged on the vehicle body 91.

[0070] As shown in Figures 1 to 4, the drive source 60 (electric screwdriver) has a main body 61, a motor housed in the main body 61, and a chuck 62 that protrudes from the main body 61 and rotates around the axis of the motor's rotation shaft.

[0071] The main body 61 has a gripping portion 63, which is provided with a power switch for turning the power on and off, a rotation switch for changing the direction of rotation of the motor and therefore the chuck 62, and a lever (speed adjustment switch) for changing the speed of the motor and therefore the chuck 62.

[0072] The main body 61 also has a built-in motor in its housing, powered by a battery detachably attached to the main body 61. The motor can be driven by turning on the power switch and stopped by turning off the power switch. The rotation direction of the motor can be switched between forward and reverse by operating the rotation switch. Furthermore, the speed at which the motor rotates can be adjusted by operating the lever. In other words, the motor can be rotated in the desired direction and speed by operating the various switches.

[0073] The chuck 62 is provided to protrude from the main body 61 and is configured to rotate around the same axis as the motor by being connected to a rotation shaft of a motor built into the main body 61.

[0074] A bit 81 provided in a force transmission unit 80 is detachably attached to the chuck 62, whereby the rotational force (force) generated by the rotation of the motor is transmitted to the force transmission unit 80.

[0075] In a drive source 60 (electric screwdriver) having such a configuration, when the power switch is turned on, the rotating shaft of the motor rotates, causing the chuck 62 connected to the rotating shaft to rotate around the same axis as the motor, and therefore the bit 81 attached to the chuck 62 and provided to the force transmission unit 80 also rotates around the same axis as the motor.

[0076] As shown in Figure 3 etc., the force transmission unit 80 has a bevel gear at the tip of the shaft, a bit 81 attached to the chuck 62 on this shaft side, a bevel gear 82 that meshes with and engages with the bevel gear of the bit 81 to convert rotational motion of the vertical axis to rotational motion of the horizontal axis, a pulley 83 connected and fixed concentrically to the bevel gear 82, one axle 86 provided corresponding to two wheels 92B arranged at each of the two front corners of the frame 94, a pulley 85 connected and fixed concentrically to the middle of the wheel 92B, and a timing belt 84 wound around the pulleys 83 and 85, and is arranged in the following order from the chuck 62 side to the wheel 92B side: bit 81, bevel gear 82, pulley 83, timing belt 84, pulley 85 and axle 86.

[0077] As a result, the bit 81 attached to the chuck 62 of the drive source 60 (electric screwdriver) and the wheel 92B of the vehicle body 91 are connected via the bevel gears, pulleys, timing belts, and axles. The number of bevel gears, pulleys, and timing belts provided in the force transmission unit 80 is not limited to the number provided in this embodiment.

[0078] When the power switch of the drive source 60 (electric screwdriver) is turned on, the rotation of the chuck 62 rotates the bit 81 attached to the chuck 62, as described above. The bevel gear of the bit 81 rotates by rotational motion about the vertical axis (see FIG. 3). The rotational force of the bit 81, which rotates by rotational motion about the vertical axis, is converted into rotational force that rotates by rotational motion about the horizontal axis and transmitted to the bevel gear 82 because the bevel gear of the bit 81 meshes with the bevel gear 82. As a result, the pulley 83 is concentrically connected to the bevel gear 82 and therefore rotates together with the bevel gear 82 by rotational motion about the horizontal axis. Therefore, the rotational force of the pulley 83 is transmitted to the pulley 85 via the timing belt 84, while maintaining rotational motion about the horizontal axis. The wheel 92B is concentrically connected to the pulley 85 via the axle 86, and therefore the wheel 92B rotates by rotational motion about the horizontal axis, similar to the pulley 85.

[0079] In this way, the rotational force (power) generated by the motor in the drive source 60 (electric screwdriver) is transmitted to the wheels 92B via the force transmission unit 80 as a rotational force that rotates by rotational motion of the horizontal axis. Therefore, by switching the rotation switch provided in the drive source 60 (electric screwdriver), the rotation direction of the wheels 92B can be selected between forward and reverse, and the vehicle body 91, i.e., the joining device 1, can be selectively moved forward or backward by its own propulsion. Furthermore, by switching the lever (speed adjustment switch) provided in the drive source 60 (electric screwdriver), the speed at which the wheels 92B rotate can be adjusted, and the speed of the vehicle body 91, i.e., the joining device 1, can be set to a desired speed.

[0080] As described above, the joining device 1 is not advanced manually by an operator, but is self-propelled and advanced in the +x-axis direction by the operation of the drive unit 6, and because the drive unit 6 has the configuration described above, the joining device 1 can be stably moved (advanced) while maintaining a set speed. Therefore, the waterproof sheets 100BA and 100BB can be joined with excellent precision by the roller 92A of the pressing unit 7 rolling against the waterproof sheets 100BA.

[0081] In addition, in this embodiment, an electric screwdriver is used as the drive source 60 without using an engine, motor, or the like, and therefore the electric screwdriver can be used for various machining operations by detaching the electric screwdriver from the joining device 1 and attaching various processing bits (processing tools) to the chuck 62 instead of the bit 81. Furthermore, because an existing electric screwdriver is repurposed as the drive source 60 provided in the joining device 1, the joining device 1 can be manufactured inexpensively.

[0082] The handle 93 is supported and fixed to two poles 96 that protrude upward from each of the two rear corners of the frame 94 of the vehicle body 91. The worker performing the joining work of the waterproof sheet 100 can grip the handle 93 and, in that state, use the drive unit 6 to move the joining device 1 forward in the +x-axis direction or move the joining device 1 backward in the -x-axis direction.

[0083] The handle 93 is also provided with a lever 44 that is included in the supply system 10, which will be described below. By operating this lever 44, the worker can advance the joining device 1 in the +x-axis direction, and supply the solvent Q to the overlapping portion 101 when joining the waterproof sheets 100B together at the overlapping portion 101.

[0084] The supply system 10 is mounted on a vehicle body 91 equipped with the running system 9, and is a structure that supplies solvent Q to the waterproof sheet 100, more specifically, to the overlapping portion 101 where the waterproof sheets 100B overlap, while traveling together with the running system 9.

[0085] As shown in FIG. 5 and other figures, the supply system 10 includes a storage section 2 for storing the solvent Q, a flow path 31 communicating with the storage section 2 and through which the solvent Q from the storage section 2 passes, a nozzle 5 communicating with the flow path 31 and supplying (discharging) the solvent Q that has passed through the flow path 31 to an overlapping section 101 where the waterproof sheets 100B overlap, a flow rate adjusting section 41 for adjusting the flow rate of the solvent Q discharged from the nozzle 5, an on-off valve 43 for opening and closing the passage of the solvent Q in the flow path 31, and an air tank 48 for sending the solvent Q in the storage section 2 toward the nozzle 5 via the flow path 31. The air supply system has a flow path 32 that is connected to the storage section 2 and the air tank 48 and through which air passes when it is supplied from the air tank 48 to the storage section 2, and a supply amount adjustment section 47 that adjusts the amount of air supplied to the storage section 2. The air tank 48, supply amount adjustment section 47, storage section 2, flow rate adjustment section 41, on-off valve 43, and nozzle 5 are arranged in this order, with the air tank 48, supply amount adjustment section 47, and storage section 2 connected via the flow path 32, and the storage section 2, flow rate adjustment section 41, on-off valve 43, and nozzle 5 connected via the flow path 31.

[0086] Each part of the supply system 10 having such a configuration is disposed on a vehicle body 91 provided on the traveling system 9. Each part of the supply system 10 will be described below.

[0087] In this embodiment, the reservoir 2 is configured as a cylindrical tank (solvent tank) as shown in FIG.

[0088] This storage section 2 is fixed above the on-off valve 43 (described later) arranged on the top plate 941, via the flow rate adjustment section 41 and the flow path 31, and is thereby arranged on the vehicle body 91.

[0089] The reservoir 2 stores a solvent Q, which is supplied to the overlapping portion 101 to weld the waterproof sheets 100B together (the waterproof sheets 100BA and 100BB) at the overlapping portion 101. Examples of the solvent Q include, but are not limited to, ketones such as tetrahydrofuran (THF), nitrobenzene, carbon tetrachloride, pyridine, ethyl acetate, cyclohexanone, and methyl ethyl ketone (MEK), and alcohols such as toluene, methyl alcohol, and isopropyl alcohol. One or more of these solvents can be used in combination, but tetrahydrofuran is preferred. Tetrahydrofuran is highly volatile and dissolves various resin materials. Therefore, it is a preferred solvent for welding the waterproof sheets 100B together.

[0090] This storage section 2 is connected at its bottom (lower end) to one end (base end) of a flow path 31 that communicates with a nozzle 5, and at its top (upper end) to the other end (tip end) of a flow path 32 that communicates with an air tank 48, so that when air is supplied to the storage section 2 from the air tank 48 via the flow path 32, the solvent Q stored in the storage section 2 is supplied to the nozzle 5 via the flow path 31.

[0091] Flow path 31 (first flow path) is liquid-tightly connected to the bottom of reservoir 2, flow rate adjuster 41, on-off valve 43, and nozzle 5, and is thereby disposed on vehicle body 91.

[0092] The flow path 31 has one end connected to the reservoir 2 and the other end connected to the nozzle 5, respectively, so that the solvent Q stored in the reservoir 2 is supplied to the nozzle 5.

[0093] The flow path 31 may be partially or entirely constituted by a metal or resin pipe through which the solvent Q passes.

[0094] The flow path 31 may be made up of a plurality of pipes connected via joints, or may be made up of a single pipe. The pipe may be bent or curved at one or more points along its length.

[0095] Nozzle 5 is connected in a liquid-tight manner to the other end (tip) of flow path 31, that is, the tip on the opposite side to reservoir 2, and is thereby disposed on vehicle body 91.

[0096] In this embodiment, the nozzle 5 is a flat, hollow metal body that communicates with the flow path 31 at its base end and, as shown in Figure 5, has a discharge port 51 at its tip end that opens rearward, i.e., toward the -x-axis direction, and discharges the solvent Q that has passed through the flow path 31 into the overlapping portion 101 between the waterproof sheets 100B. The solvent Q discharged from the discharge port 51 is used to bond the waterproof sheets 100B together, i.e., the waterproof sheets 100BA and 100BB. The nozzle 5 protrudes toward the -y-axis direction parallel to the xy plane. Further, the nozzle 5 may be provided with a reinforcing material for reinforcing the nozzle 5.

[0097] Furthermore, the solvent Q ejected from the outlet 51 of the nozzle 5 may take any form, such as a waterfall, droplets, or mist, by appropriately setting the shape of the outlet 51, the amount of air supplied in the supply amount adjustment unit 47, the flow rate of the solvent Q in the flow rate adjustment unit 41, etc.

[0098] As shown in Figures 1 and 5, when ejecting the solvent Q, the nozzle 5 is inserted from one side of the width of the waterproof sheet 100B, i.e., the +y-axis side, into the back side of the upper waterproof sheet 100BA (between the waterproof sheets 100BA and 100BB).

[0099] The supply system 10 has such a nozzle 5, and by discharging the solvent Q from this nozzle 5, the solvent Q is supplied to the overlapping portion 101 between the waterproof sheets 100B.

[0100] In this embodiment, the number of nozzles 5 provided in the supply system 10 is one, but is not limited to this and may be, for example, two or more.

[0101] Flow rate adjustment unit 41 is fixed above on-off valve 43 (described later) disposed on top plate 941 via flow path 31, and is thereby disposed on vehicle body 91. Flow rate adjustment unit 41 is also provided midway between reservoir 2 and nozzle 5, connected to flow path 31.

[0102] This flow rate adjusting unit 41 is configured with, for example, a variable throttle valve. As a result, the flow rate adjusting unit 41 can continuously adjust the flow rate of the solvent Q passing through the flow path 31 by changing the throttle opening. With this flow rate adjusting unit 41, the solvent Q can be supplied from the nozzle 5 in an appropriate amount, neither too much nor too little.

[0103] The flow rate adjusting unit 41 may be configured to adjust the flow rate of the solvent Q by manual operation, or may be configured to automatically adjust the flow rate of the solvent Q based on various conditions such as the viscosity of the solvent Q.

[0104] In this embodiment, a drain 46 is provided between the reservoir 2 and the flow rate adjuster 41, and is connected to the flow path 31. As a result, if air bubbles are mixed into the flow path 31, the air bubbles can be removed through the drain 46. When replacing the solvent Q, the unnecessary solvent Q stored in the reservoir 2 can be removed through the drain 46.

[0105] The on-off valve 43 is fixed on the top plate 941, and is thereby disposed on the vehicle body 91. The on-off valve 43 is also provided midway between the flow rate adjuster 41 and the nozzle 5, and is connected to the flow path 31.

[0106] 1 etc., is connected to a lever 44 provided on the handle 93 via a wire 45, and is configured so that the on-off valve 43 can be opened and closed by operating the lever 44. This allows the operator performing the joining work of the waterproof sheets 100 to switch on / off the supply of the solvent Q from the nozzle 5 to the overlapping portion 101 by operating the lever 44.

[0107] The air tank 48 is fixed onto the top plate 941, and is thereby disposed on the vehicle body 91.

[0108] The air tank 48 is a cylindrical tank that is configured to be connectable to a compressor (not shown) that can supply air, and is filled with mechanically compressed air (compressed air) using the compressor before the waterproof sheets 100B are joined together by the joining device 1. The compressor may be either automatic or manual. If the compressor is manual and lightweight, it may be built into the air tank 48.

[0109] One end (base end) of a flow path 32 communicating with the top of the storage section 2 is connected to the air tank 48, and by supplying compressed air to the storage section 2 via the flow path 32, the solvent Q stored in the storage section 2 can be pushed out of the storage section 2 via the flow path 31 communicating with the bottom of the storage section 2. Therefore, by supplying air to the storage section 2 from the air tank 48 via the flow path 32, the solvent Q stored in the storage section 2 can be ejected from the nozzle 5 via the flow path 31. In this manner, the air tank 48 is charged (filled) with compressed air, and the solvent Q stored in the storage section 2 is ejected from the nozzle 5 using the compressive force of the air charged in the air tank 48. Therefore, unlike a bonding device that employs a device configuration in which the ejection of the solvent Q from the nozzle 5 is performed based on the siphon principle, utilizing the height difference between the storage section (tank) and the nozzle, there are no restrictions on the location of the storage section. Therefore, in the present invention, the reservoir 2 can be disposed at any position on the frame 94 (top plate 941), which widens the design possibilities when manufacturing the joining device 1.

[0110] Flow path 32 (second flow path) is airtightly connected to the top of reservoir 2, supply amount adjuster 47, and air tank 48, and is thereby disposed on vehicle body 91.

[0111] This flow path 32 has one end connected to the air tank 48 and the other end connected to the storage section 2, respectively, so that air loaded in a compressed state in the air tank 48 is supplied to the storage section 2.

[0112] The flow path 32 may be partially or entirely constituted by a metal or resin pipe through which air passes.

[0113] Like the flow path 31, the flow path 32 may be formed by connecting a plurality of pipes via joints, or may be formed by a single pipe.

[0114] Supply amount adjuster 47 is fixed onto top plate 941, and is thereby disposed on vehicle body 91. Supply amount adjuster 47 is also provided midway between reservoir 2 and air tank 48, and is connected to flow path 32.

[0115] This supply amount adjustment unit 47 is configured with, for example, a variable throttle valve. As a result, supply amount adjustment unit 47 can continuously adjust the flow rate of air passing through flow path 32 by changing the throttle opening. With such supply amount adjustment unit 47, it is possible to supply an appropriate amount of air from air tank 48 to storage unit 2, neither too much nor too little.

[0116] The supply amount adjustment unit 47 may be configured to adjust the amount of air supplied by manual operation, or may be configured to automatically adjust the amount of air supplied based on various conditions, such as the viscosity of the solvent Q to be pushed out by air.

[0117] Furthermore, either a check valve or a manual valve may be provided between the reservoir 2 and the supply amount adjustment unit 47, and connected to the flow path 32. By providing a check valve, it is possible to prevent the solvent Q from flowing back from the reservoir 2 to the air tank 48. Furthermore, by providing a manual valve, it is possible to reliably prevent the solvent Q from being discharged from the nozzle 5 even if an operator unintentionally operates the lever 44 when the bonding apparatus 1 is stopped.

[0118] In the supply system 10 configured as described above, prior to bonding the waterproof sheets 100B together using the bonding device 1, the air tank 48 is filled with compressed air using a compressor. The supply rate adjuster 47 adjusts the rate of air supplied from the air tank 48 to the storage unit 2, and the flow rate adjuster 41 adjusts the flow rate of the solvent Q from the storage unit 2 to the nozzle 5. This allows an appropriate supply rate of the solvent Q stored in the storage unit 2 to be discharged from the nozzle 5 when the operator operates the lever 44 to open the on-off valve 43. In other words, with the supply system 10 configured as described above, the supply rate of the solvent Q discharged from the nozzle 5 can be set to a desired amount by adjustments made by the supply rate adjuster 47 and the flow rate adjuster 41. This ensures that the supply rate can be reliably set to an appropriate amount for bonding the waterproof sheets 100B together. Therefore, in order to ensure that the waterproof sheet 100B is in a molten state at the overlapping portion 101, it is possible to accurately suppress or prevent a large amount of unnecessary solvent Q from being supplied to the overlapping portion 101, which is desirable from an economic and environmental perspective.

[0119] When joining the waterproof sheets 100B together using the joining device 1, the joining device 1 is advanced along the +x-axis direction, and the operator operates the lever 44 to open the on-off valve 43, thereby connecting the air tank 48, the storage unit 2, and the nozzle 5 via the flow paths 31 and 32 (see FIG. 5 ). At this time, compressed air is loaded into the air tank 48, and this air is supplied from the top of the storage unit 2 to the inside via the flow path 32, with the supply rate adjusted to an appropriate level by the supply rate adjuster 47. This supply of air to the storage unit 2 pushes the stored solvent Q in the storage unit 2 outward from the storage unit 2, i.e., toward the flow path 31 connected to the bottom of the storage unit 2. As a result, the solvent Q, with the flow rate adjusted to an appropriate level by the flow rate adjuster 41, is discharged from the nozzle 5 via the flow path 31, and the waterproof sheets 100B can be melted at the overlapping portion 101.

[0120] The nozzle 5 is located ahead of each roller 92A in the traveling direction of the vehicle body 91. Therefore, after the waterproof sheets 100B are melted in the overlapping portion 101, that is, after the solvent Q is supplied by the supply system 10 through the nozzle 5, the waterproof sheets 100B are rolled together from the front side at the overlapping portion 101 by the rollers 92A provided in the traveling system 9 (see Figures 1 and 2, etc.).

[0121] This rolling causes the waterproof sheets 100B, which have been melted by the supply of solvent Q, to be joined at the overlapping portion 101. As a result, waterproofing is ensured between the waterproof sheets 100BA and 100BB at the overlapping portion 101. The waterproof sheets 100 can be joined using the joining device 1 by supplying the solvent Q to the overlapping portion 101 via the nozzle 5 using the joining device 1 as described above, and then rolling the waterproof sheets 100B with the roller 92A after the supply of the solvent Q. The supply of the solvent Q and the rolling of the waterproof sheets 100B constitute a joining process (waterproof sheet joining method) using the joining device 1. After the joining process is completed, the nozzle 5 is removed from between the waterproof sheets 100B.

[0122] Furthermore, when joining waterproof sheets 100B together at the overlapping portion 101 using the joining device 1 as described above, as shown in Figures 1 and 4, in the running system 9, the roller 92A provided in the pressing unit 7 runs along the roller running line Ls along the overlapping portion 101, where the front side of the waterproof sheet 100BA (first waterproof sheet) is rolled and compressed, and in the supply system 10, the storage unit 2 mounted on the vehicle body 91 runs along a wheel running line Lk that is different from the roller running line Ls and parallel to the roller running line Ls.

[0123] Then, the vehicle body 91 traveling on different lines Ls and Lk and the pressing part 7 are joined via a connecting member 72 provided in the pressing part 7. By this connecting member 72, the pressing part 7 is swingable in the vertical direction (z-axis direction) with respect to the vehicle body 91 (top plate 941) and biased downward (-z-axis direction). Thereby, when the waterproof sheet 100BA is roll-pressed from its front side by the roller 92A provided in the pressing part 7, the magnitude of the load can be set to a desired magnitude. Therefore, when the load applied to the waterproof sheet 100B by the roller 92A provided in the pressing part 7 is A [N] and the load applied to the waterproof sheet 100B by the supply system 10 including the storage part 2 mounted on the vehicle body 91 is B [N], it is configured to satisfy the relationship A < B.

[0124] Therefore, in the overlapping part 101, when roll-pressing from the front side of the waterproof sheet 100BA with the roller 92A, for example, even if the storage part 2 stores a full amount of the solvent Q and the weight of the vehicle body 91 increases, the roller 92A provided in the pressing part 7 can surely prevent a large load from being applied to the overlapping part 101, and the load A applied to the waterproof sheet 100B by the roller 92A can be set to an appropriate magnitude for joining the waterproof sheets 100B. Thus, when joining the waterproof sheets 100B in the overlapping part 101, it is possible to accurately suppress or prevent wrinkles from occurring in the waterproof sheet 100B located in the overlapping part 101 and join the waterproof sheets 100B with excellent accuracy.

[0125] In addition, in this embodiment, the case where the supply system 10 has both the flow rate adjustment part 41 and the supply amount adjustment part 47 has been described, but it is not limited to this case. The supply system 10 may be one in which either the flow rate adjustment part 41 or the supply amount adjustment part 47 is omitted. However, by configuring the supply system 10 to have both the flow rate adjustment part 41 and the supply amount adjustment part 47 as in this embodiment, it becomes possible to adjust the discharge amount of the solvent Q discharged from the nozzle 5 with more excellent accuracy.

[0126] While the waterproof sheet joining device and waterproof sheet joining method of the present invention have been described above with reference to the illustrated embodiments, the present invention is not limited to these. Furthermore, each component of the waterproof sheet joining device can be replaced with any other component that can perform the same function. Furthermore, any other component may be added.

[0127] For example, the joining device 1 stores solvent Q as a liquid material in the storage section 2, and thereby supplies solvent Q from the nozzle 5 between the waterproof sheets 100B, but it is also possible to supply adhesive as a liquid material instead of solvent Q between the waterproof sheets 100B to join the waterproof sheets 100B together.

[0128] Furthermore, in the waterproof sheet joining method of the present invention, one or more steps can be added for any purpose. [Explanation of symbols]

[0129] 1 Waterproof sheet joining device 2. Storage section 3 Nozzle support 5 nozzles 6 Drive unit 7 Pressing part 9. Running System 10 Supply system 31 Flow path 32 Flow path 33 1st support part 34 Second support part 35 Third support part 41 Flow rate adjustment section 43 On-off valve 44 Lever 45 wire 46 Drain 47 Supply amount adjustment section 48 Air Tank 51 Discharge port 60 Drive source 61 Main body 62 Zipper 63 Gripping part 71 Side panel 72 Connecting member 73 Coil section 74 Shaft 80 Force transmission section 81 bits 82 Bevel gear 83 Pulley 84 Timing belt 85 Pulley 86 axles 91 Body 92A Roller 92B Wheel 93 Handle 94 frames 96 Paul 100 Tarpaulin 100A waterproof sheet 100B waterproof sheet 100BA waterproof sheet 100BB waterproof sheet 101 overlapping part 150B Insulation Panel 151 Boundary 155 Fireproof Sheet 160 Main house 331 Side Panel 332 Top plate 334 Bottom plate 335 Shaft 336 Connecting plate 341 Side Panel 342 Guide Rail 343 wheels 344 Connecting members 345 Fixing member 346 Groove 351 Bottom plate 352 Side panel 353 Movable plate 354 Groove 355 Hole 941 Top plate A arrow B arrow C arrow Lk Wheel running line Lk1 Wheel running line Lk2 Wheel running line Ls roller running line Q Solvent α axis

Claims

1. A waterproof sheet joining device used when laying a waterproof waterproof sheet on a floor surface as a structure using a liquid material containing a solvent or adhesive, a supply system that supplies the liquid material to the waterproof sheet; a traveling system having a vehicle body and a first wheel rotatably supported on the vehicle body, the traveling system traveling along a forward direction by rotation of the first wheel together with the supply system; The first waterproof sheet and the second waterproof sheet of the waterproof sheet are overlapped at their edges along the forward direction, with the second waterproof sheet on the bottom, and the liquid material is supplied to the overlapping portion formed thereby, thereby joining the first waterproof sheet and the second waterproof sheet together; The liquid material is supplied to the overlapping portion where the first waterproof sheet and the second waterproof sheet overlap by a nozzle provided in the supply system, and then the overlapping portion to which the liquid material has been supplied is rolled from the front side of the first waterproof sheet by a rotatably supported roller provided in the traveling system, the traveling system includes a nozzle support portion connected to the vehicle body at a front side of the vehicle body and supporting the nozzle, the nozzle support portion supports the nozzle so as to be movable in a vertical direction, and supports the nozzle so as to be rotatable about the vertical direction as a rotation center; the nozzle support portion includes a first support portion connected to the vehicle body, a second support portion that supports the nozzle, a third support portion that connects the first support portion and the second support portion, and a second wheel that is provided at a lower end of the second support portion and in contact with the waterproof sheet and rotates as the vehicle body moves forward; The third support portion is supported rotatably relative to the first support portion, with the vertical direction as the center of rotation, thereby allowing the nozzle in the nozzle support portion to be supported rotatably with the vertical direction as the center of rotation.This waterproof sheet joining device is characterized by the above.

2. A waterproof sheet joining device used when laying a waterproof waterproof sheet on a floor surface as a structure using a liquid material containing a solvent or adhesive, a supply system that supplies the liquid material to the waterproof sheet; a traveling system having a vehicle body and a first wheel rotatably supported on the vehicle body, the traveling system traveling along a forward direction by rotation of the first wheel together with the supply system; The first waterproof sheet and the second waterproof sheet of the waterproof sheet are overlapped at their edges along the forward direction, with the second waterproof sheet on the bottom, and the liquid material is supplied to the overlapping portion formed thereby, thereby joining the first waterproof sheet and the second waterproof sheet together; The liquid material is supplied to the overlapping portion where the first waterproof sheet and the second waterproof sheet overlap by a nozzle provided in the supply system, and then the overlapping portion to which the liquid material has been supplied is rolled from the front side of the first waterproof sheet by a rotatably supported roller provided in the traveling system, the traveling system includes a nozzle support portion connected to the vehicle body at a front side of the vehicle body and supporting the nozzle, the nozzle support portion supports the nozzle so as to be movable in the up and down direction, the nozzle support portion includes a first support portion connected to the vehicle body, a second support portion that supports the nozzle, a third support portion that connects the first support portion and the second support portion, and two second wheels that are provided at a lower end of the second support portion and in contact with the waterproof sheet and rotate as the vehicle body moves forward; the two second wheels are provided at a lower end of the second support portion with a gap therebetween, A waterproof sheet joining device characterized in that the nozzle is configured to be positioned corresponding to the overlapping portion with its tip protruding from the gap.

3. A waterproof sheet joining device as described in claim 1 or 2, wherein the second support portion is supported so as to be movable in the vertical direction relative to the third support portion, thereby supporting the nozzle in the nozzle support portion so as to be movable in the vertical direction.

4. The waterproof sheet joining device according to any one of claims 1 to 3, wherein the nozzle support portion supports the nozzle so that the nozzle can move downward due to its own weight.

5. A waterproof sheet joining method, comprising a joining step of joining the waterproof sheets using the waterproof sheet joining device according to any one of claims 1 to 4.

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