Waterproof sheet joining device and waterproof sheet joining method

Abstract

To provide a waterproof sheet joining device capable of continuously placing a nozzle and a roller that a supply device has, with good positional accuracy, corresponding to an overlap portion between the waterproof sheets at the time of the movement, even when a forward movement of the waterproof sheet joining device is carried out by pushing forward the waterproof sheet joining part, and a waterproof sheet joining method using the waterproof sheet joining device.SOLUTION: A waterproof sheet joining device 1 includes a supply system 10, a vehicle body 91, and a wheel 92B and a caster 92C that are rotatably supported by the vehicle body 91, and a travelling system 9 that travels together with the supply system 10, wherein a frame 94 that the vehicle body 91 has is, on a lower side thereof, provided with two wheels 92B on the front side of the frame 94, on a rear side of the frame 94, two casters 92C are provided, and, in addition, on an upper side of the frame 94, behind the frame 94, a handle 93 is provided.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 Art

[0002] In recent years, with the increasing demand for high durability of buildings, a sheet waterproof structure in which a waterproof sheet is laid and constructed has been adopted on the floors of the roofs and verandas of many buildings.

[0003] In this sheet waterproof structure, in laying the waterproof sheet on the floor as a structure, for example, a configuration is known in which the edges of two waterproof sheets are overlapped vertically and the overlapping portion is joined by an adhesive.

[0004] When joining the overlapping portions of the waterproof sheets with an adhesive, it has been proposed to supply the adhesive to the overlapping portion using a supply device (see, for example, Patent Document 1).

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

[0006] In this supply device, when the operator pushes the supply device forward to move the supply device along the overlapping portion of the waterproof sheets, the adhesive stored in the tank is supplied from the tip of the nozzle disposed on the front side of the supply device to the overlapping portion of the waterproof sheets through the tube. Then, the upper waterproof sheet is rolled from the front side by a roller provided on the rear side of the nozzle of the supply device, so that the waterproof sheets are joined at the overlapping portion of the waterproof sheets.

[0007] In a supply device with such a configuration, in order to join waterproof sheets together with excellent precision at the overlapping sections, it is necessary to supply adhesive with excellent precision from a nozzle provided by the supply device to the space between the waterproof sheets corresponding to the overlapping section as the supply device moves along the overlapping section, and then to stably compact the upper waterproof sheet from the front side with a roller provided by the supply device.

[0008] In other words, the supply device is required to position the nozzle and roller, which are arranged in that order from the front, with high positional accuracy to correspond to the overlapping sections of the waterproof sheets. However, since the forward movement of the supply device is carried out by the operator pushing it forward, it has been technically difficult to continuously position the nozzle and roller of the supply device with high positional accuracy to correspond to the overlapping sections of the waterproof sheets during this movement.

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

[0010] [Patent Document 1] Publication number 05-012027 [Overview of the project] [Problems that the invention aims to solve]

[0011] The object of the present invention is to provide a waterproof sheet joining device that, even if the forward movement of the waterproof sheet joining device is performed by an operator pushing the waterproof sheet joining device forward, can continuously position the nozzles and rollers of the supply device with high positional accuracy in accordance with the overlapping portions of the waterproof sheets during this movement, and a waterproof sheet joining method using such a waterproof sheet joining device. [Means for solving the problem]

[0012] These objectives are achieved by the present invention as described in (1) to (8) below. (1) A waterproof sheet bonding device used when laying a waterproof sheet on a floor surface as a building structure using a liquid material containing a solvent or adhesive, A supply system for supplying the liquid material to the waterproof sheet, A frame and a rotatably supported portion of the frame 1 It has wheels and casters, and a handle provided on the upper side of the frame, 1 The vehicle comprises a running system having a vehicle body that moves along the forward direction together with the supply system by the rotation of the wheels and the casters, The first waterproof sheet and the second waterproof sheet of the aforementioned waterproof sheet are joined together by supplying the liquid material to the overlapping portion formed by overlapping the edges of the first waterproof sheet and the second waterproof sheet of the aforementioned waterproof sheet with the second waterproof sheet on the lower side along the forward direction. After the liquid material is supplied to the overlapping portion where the first waterproof sheet and the second waterproof sheet overlap by a nozzle provided by the supply system, the overlapping portion to which the liquid material has been supplied is rolled down from the front side of the first waterproof sheet by a rotatably supported roller provided by the travel system. The travel system supports the nozzle on the front side of the vehicle body and supports the roller relative to the nozzle on the rear side of the vehicle body. The frame has two of the above on the front side of the frame, on the lower side of the frame. 1Wheels are provided, two of the casters are provided on the rear side of the frame, and on the upper side of the frame, the handle is provided on the rear side of the frame Occasionally, The aforementioned drive system is positioned on the front side of the vehicle body and has a nozzle support portion that supports the nozzle, The nozzle support portion is provided at its lower end in contact with the waterproof sheet, rotates as the vehicle body moves forward, and has two second wheels spaced apart from each other. Viewed from above, the nozzle is positioned between the two second wheels. A waterproof sheet joining device characterized by the above.

[0013] (2) The waterproof sheet joining device according to (1) above, wherein the wheels are only allowed to rotate along the front-rear direction without turning. 1 The wheels are only allowed to rotate along the front-rear direction without turning. The waterproof sheet joining device according to (1) above.

[0014] (3) The waterproof sheet joining device according to (1) or (2) above, wherein the casters are allowed both to turn around the vertical axis and to rotate along an arbitrary direction from the front-rear direction to the left-right direction accompanying the turning.

[0015] (4) The waterproof sheet joining device according to any one of (1) to (3) above, wherein the handle is supported by the frame through a pole protruding upward from the frame on the rear side of the frame.

[0016] (5) The waterproof sheet joining device according to any one of (1) to (4) above, wherein the two wheels are arranged opposite to each other along the left-right direction on the front side of the frame. 1 The two wheels are arranged opposite to each other along the left-right direction on the front side of the frame. The waterproof sheet joining device according to any one of (1) to (4) above.

[0017] (6) The waterproof sheet joining device according to any one of (1) to (5) above, wherein the two casters are arranged opposite to each other along the left-right direction on the rear side of the frame.

[0018] (7) The waterproof sheet joining device according to any one of (1) to (6) above, wherein the vehicle body is rear-wheel-steered.

[0019] A waterproof sheet joining method, characterized by having a joining step of joining the waterproof sheets using the waterproof sheet joining device according to any one of (1) to (7) above.

Effect of the Invention

[0020] According to the present invention, using a waterproof sheet joining device, a liquid material containing a solvent or an adhesive is supplied from the tip of a nozzle disposed on the front side of the waterproof sheet joining device to the overlapping portion of the waterproof sheets, and then, the upper waterproof sheet is rolled from the front side with a roller provided on the rear side of the nozzle by the waterproof sheet joining device. Thus, when the waterproof sheets are joined at the overlapping portion of the waterproof sheets, even if the forward movement of the waterproof sheet joining device is carried out by an operator pushing the waterproof sheet joining device forward, during this movement, the nozzle and the roller provided in the supply device can be continuously and accurately positioned corresponding to the overlapping portion of the waterproof sheets. Therefore, an operator can join the waterproof sheets with excellent accuracy at the overlapping portion of the waterproof sheets using the waterproof sheet joining device.

Brief Description of the Drawings

[0021] [Figure 1] It is a perspective view showing a first embodiment of the waterproof sheet joining device of the present invention. [Figure 2] It is a side view of the waterproof sheet joining device shown in FIG. 1 as viewed in the direction of arrow A in the figure. [Figure 3] It is a front view of the waterproof sheet joining device shown in FIG. 1 as viewed in the direction of arrow C in the figure. [Figure 4] It is a plan view of the waterproof sheet joining device shown in FIG. 1 as viewed in the direction of arrow B in the figure. [Figure 5] It is a schematic diagram showing the configuration of a supply system provided in the waterproof sheet joining device shown in FIG. 1. [Figure 6] It is a partially enlarged side view showing an enlarged pressing portion provided in the waterproof sheet joining device shown in FIG. 1. [Figure 7]This is a partially enlarged front view showing an enlarged view of the pressing portion of the waterproof sheet joining device shown in Figure 1. [Figure 8] Figure 1 is a magnified perspective view showing a close-up of the nozzle support section of the waterproof sheet joining device. [Figure 9] This is a partially enlarged side view showing an enlarged view of the nozzle support portion of the waterproof sheet joining device shown in Figure 1. [Figure 10] This is a partially enlarged side view showing an enlarged view of the pressing portion of the second embodiment of the waterproof sheet joining device of the present invention. [Figure 11] This is a partially enlarged front view showing an enlarged view of the pressing portion of a second embodiment of the waterproof sheet joining device of the present invention. [Figure 12] This is a partially enlarged front view showing an enlarged view of the pressing portion of the third embodiment of the waterproof sheet joining device of the present invention. [Figure 13] This is an exploded perspective view showing an example of the installation status of a waterproof sheet. [Figure 14] This is an exploded perspective view showing an example of the installation status of a waterproof sheet. [Figure 15] Figure 13 is a perspective view showing another example of the installation state of the waterproof sheet. [Modes for carrying out the invention]

[0022] The waterproof sheet joining device and waterproof sheet joining method of the present invention will be described in detail below based on preferred embodiments shown in the attached drawings.

[0023] The waterproof sheet joining device of the present invention is a waterproof sheet joining device used when laying a waterproof sheet on a floor surface as a building structure using a liquid material containing a solvent or adhesive, and comprises a supply system for supplying the liquid material to the waterproof sheet, and a running system having a frame, wheels and casters rotatably supported on the frame, and a handle provided on the upper side of the frame, and a vehicle body that moves along the forward direction together with the supply system by the rotation of the wheels and casters, and by supplying the liquid material to the overlapping portion formed by overlapping the first waterproof sheet and the second waterproof sheet of the waterproof sheet at the edges along the forward direction with the second waterproof sheet on the bottom, the first waterproof sheet and the front The first waterproof sheet and the second waterproof sheet are joined together, and after the liquid material is supplied to the overlapping portion where the first waterproof sheet and the second waterproof sheet overlap by a nozzle provided by the supply system, the overlapping portion where the liquid material has been supplied is rolled down from the front side of the first waterproof sheet by a rotatably supported roller provided by the travel system. The travel system supports the nozzle on the front side of the vehicle body and the roller on the rear side of the vehicle body relative to the nozzle. The frame has two wheels on the front side of the frame and two casters on the rear side of the frame on the lower side of the frame, and the handle is provided on the rear side of the frame on the upper side of the frame.

[0024] By configuring the waterproof sheet joining device in this way, when joining waterproof sheets at the overlapping portion, a liquid material containing a solvent or adhesive is supplied from the tip of a nozzle located on the front side of the waterproof sheet joining device, and then the upper waterproof sheet is pressed from the front side by a roller located behind the nozzle of the waterproof sheet joining device, the waterproof sheets are joined at the overlapping portion. Even if the forward movement of the waterproof sheet joining device is performed by the operator pushing the waterproof sheet joining device forward, the nozzle and roller of the supply device can be continuously positioned with high positional accuracy in response to the overlapping portion of the waterproof sheets during this movement. Therefore, the operator can join waterproof sheets at the overlapping portion with excellent accuracy using the waterproof sheet joining device. The waterproof sheet joining device will be described in detail below.

[0025] <<Waterproof sheet joining device>> <First Embodiment> Figure 1 is a perspective view showing a first embodiment of the waterproof sheet joining device of the present invention; Figure 2 is a side view of the waterproof sheet joining device shown in Figure 1, viewed in the direction of arrow A in the figure; Figure 3 is a front view of the waterproof sheet joining device shown in Figure 1, viewed in the direction of arrow C in the figure; Figure 4 is a plan view of the waterproof sheet joining device shown in Figure 1, viewed in the direction of arrow B in the figure; Figure 5 is a schematic diagram showing the configuration of the supply system of the waterproof sheet joining device shown in Figure 1; and Figure 6 is a magnified view showing the pressing portion of the waterproof sheet joining device shown in Figure 1. Figure 7 is a large side view, Figure 8 is a partially enlarged front view showing an enlarged view of the pressing part of the waterproof sheet joining device shown in Figure 1, Figure 9 is a partially enlarged perspective view showing an enlarged view of the nozzle support part of the waterproof sheet joining device shown in Figure 1, Figure 13 is an exploded perspective view showing an example of the waterproof sheet installation state, Figure 14 is an exploded perspective view showing an example of the waterproof sheet installation state, and Figure 15 is a perspective view showing another example of the waterproof sheet installation state shown in Figure 13.

[0026] In Figure 8, (a) shows the state where the nozzle tip is located on the -y axis side, and (b) shows the state where the nozzle tip is located on the +y axis side. In Figure 9, (a) shows the state where the nozzle is located relatively below the vehicle body of the running gear, and (b) shows the state where the nozzle is located relatively above the vehicle body of the running gear.

[0027] For the sake of explanation, in the following, the upper side of Figures 1-3 and 5-15, and the front side of Figure 4 will be referred to as "top (or upper)" or "front side," and the lower side of Figures 1-3 and 5-15, and the back side of Figure 4 will be referred to as "bottom (or lower)" or "back side." In addition, the diagonal lower left side of Figures 1 and 13-15, the left side of Figures 2, 5-6, 9 and 10, the front side of Figures 3, 7, 11 and 12, the lower side of Figure 4, and the diagonal lower right side of Figure 8 will be referred to as "front (or forward)." Furthermore, the diagonal upper right side of Figures 1 and 13-15, the right side of Figures 2, 5-6, 9 and 10, the back side of Figures 3, 7, 11 and 12, the upper side of Figure 4, and the diagonal upper left side of Figure 8 will be referred to as "back (or rear)." Furthermore, as shown in Figures 1 to 12, the three mutually orthogonal axes are defined as 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 shown in Figure 1 (hereinafter sometimes simply referred to as the "joining device") is used to join waterproof sheets 100 at their overlapping portions 101 using a solvent Q (soluble solvent) as a liquid material or an adhesive. In this embodiment, the case of joining by welding using solvent Q will be described.

[0029] Furthermore, the waterproof sheet 100 is laid (installed) on the structure, but this structure is not particularly limited and can include, for example, a rooftop or a balcony, and the waterproof sheet 100 is laid (installed) on the floor surface (floor part) of this structure using the joining device 1.

[0030] By the way, the method of laying the waterproof sheets 100 on the floor surface of the building structure by joining the waterproof sheets 100 together at the overlapping portions 101 where they overlap at their edges using the joining device 1 is not particularly limited, and there are, for example, the methods shown in Figures 13 and 14.

[0031] In the embodiment shown in Figure 13, the system comprises a strip-shaped waterproof sheet 100 (hereinafter sometimes referred to as "waterproof sheet 100A") and two waterproof sheets 100 wider than waterproof sheet 100A (hereinafter sometimes referred to as "waterproof sheet 100B"). The waterproof sheets 100B are laid adjacent to each other with a gap in between on the floor surface of the building structure. Waterproof sheet 100A is laid from above to fill the gaps between the waterproof sheets 100B. The edges of waterproof sheet 100A and each waterproof sheet 100B overlap to form an overlapping portion 101, and this overlapping portion 101 serves as a joining surface. The waterproof sheets 100 are then joined using a joining device 1 to lay them on the floor surface. In other words, the floor surface (floor portion) of the building structure is covered with the waterproof sheet 100, thereby providing waterproofing to the floor surface of the building structure.

[0032] In the configuration shown in Figure 13, the waterproof sheet 100B can be replaced with an insulating panel 150B, i.e., a so-called "PVC-coated steel sheet," etc. Specifically, as shown in Figure 15, two adjacent insulating panels 150B are arranged so that their edges abut against each other without any gaps between them, and are fixed to the purlin 160 in this state. A fire-resistant sheet 155 is joined to cover the boundary 151 formed by abutting the edges of the two insulating panels 150B, and a waterproof sheet 100A is joined to encompass the area of ​​the boundary 151 where the fire-resistant sheet 155 is joined. The joining device 1 is used to join the waterproof sheet 100A to the boundary 151 between the insulating panels 150B via the fire-resistant sheet 155, and this joining of the waterproof sheet 100A provides waterproofing to the floor surface formed by laying the insulating panels 150B on the purlin 160.

[0033] Here, the heat-insulating panel 150B consists of a substrate in which the inner layer is made of various steel plates (metal plates) such as galvalume steel plate (registered trademark) or stainless steel plate or an insulating layer, and the outermost layer is a waterproof layer (PVC layer) made of a sheet (waterproof sheet) that has waterproof properties similar to the waterproof sheet 100B. In other words, in the present invention, the waterproof layer formed on the substrate is also referred to as the waterproof sheet 100B (second waterproof sheet). To put it another way, in the embodiment shown in Figure 15, the joining device 1 is used to join the waterproof layer formed on the substrate and the waterproof sheet 100A.

[0034] Furthermore, as shown in Figure 15, one of the two insulation panels 150B can be made of a waterproof sheet 100B, depending on the configuration of the purlins 160, etc.

[0035] Furthermore, in the embodiment shown in Figure 13, the two waterproof sheets 100B are placed adjacent to each other with a gap between them. However, the invention is not limited to this, and as shown in Figure 15, the two insulation panels 150B (in other words, the waterproof sheets 100B) can also be placed with their edges touching without any gap between them.

[0036] In the embodiment shown in Figure 14, two waterproof sheets 100B (hereinafter, the upper one may be referred to as "waterproof sheet 100BA" and the lower one as "waterproof sheet 100BB") laid parallel to the floor surface of the building structure overlap at their edges to form an overlapping section 101. This overlapping section 101 then serves as a joining surface, and the waterproof sheets 100 are laid on the floor surface by joining them using the joining device 1. In other words, the floor surface (floor portion) of the building structure is covered with the waterproof sheet 100, thereby providing waterproofing to the floor surface of the building structure.

[0037] In the embodiment shown in Figure 14, the lower of the two waterproof sheets 100B, 100BB, may be replaced with the aforementioned insulation panel 150B.

[0038] Furthermore, in this embodiment, as an example, a case in which the joining device 1 is used for joining in the manner shown in Figure 14 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, ethylene vinyl acetate copolymers, etc., and one or more of these can be used in combination, but polyvinyl chloride is preferred. Polyvinyl chloride has excellent solvent welding properties. Therefore, by joining the waterproof sheets 100 together by welding with solvent Q supplied from the joining device 1, the adhesion between the waterproof sheets 100 can be improved.

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

[0041] The running system 9 includes a vehicle body 91 that travels together with the supply system 10, a pressing section 7 having a roller 92A that is rotatably supported in the front-rear direction at the lower part of the vehicle body 91, a nozzle support section 3 that supports the nozzle 5 of the supply system 10, a nozzle support section swing mechanism 6 that supports the nozzle support section 3 on the vehicle body 91 so that it can move in the ±z direction, and a handle 93 that is supported and fixed to the upper part of the vehicle body 91.

[0042] The vehicle body 91 comprises a frame 94 and two (a pair) of wheels 92B and two (a pair) of casters 92C, which are supported on the lower part of the vehicle body 91 (frame 94) so ​​as to be rotatable in the front-rear direction.

[0043] As shown in Figures 1 to 4, the frame 94 has one top plate 941, two side plates 942, and four protruding plates 943. Of these, the top plate 941 is a flat plate extending in the x-axis direction with a rectangular planar shape, and its plane is positioned approximately parallel to the xy-plane, forming the main body of the frame 94. The two side plates 942 are elongated pieces extending in the x-axis direction, and are joined to the top plate 941 via the top plate 941, with their planes positioned approximately parallel to the y-axis direction, and their planes positioned approximately parallel to the yz-plane. Furthermore, the four protruding plates 943 are small pieces with a rectangular planar shape, and are joined to the side plates 942 at positions corresponding to the four corners of the top plate 941, with their planes positioned approximately parallel to the xy-plane, thereby forming protruding parts that protrude from the side plates 942 (top plate 941).

[0044] The frame 94 has protruding plates 943 that extend from the side plates 942 at positions corresponding to the four corners of the top plate 941. Of these, two protruding plates 943 located on the +x axis side (front side) have two (a pair) of wheels 92B positioned on their undersides, facing each other along the y axis, and two protruding plates 943 located on the -x axis side (rear side) have two (a pair) of casters 92C positioned on their undersides, facing each other along the y axis. In other words, the frame 94 is equipped with two wheels 92B on its front side and two casters 92C on its rear side.

[0045] Of these wheels 92B and casters 92C, each wheel 92B (first wheel) is supported by a protruding plate 943 so as to be rotatable along the front-rear direction, i.e., the ±x-axis direction, but its rotation around the z-axis direction (vertical direction) is restricted. In other words, each wheel 92B is allowed to rotate around the y-axis without swiveling, i.e., only rotation along the front-rear direction.

[0046] Furthermore, each caster 92C is supported by the protruding plate 943 so as to be able to pivot about the z-axis direction (vertical direction), and as a result of this pivoting, it can continuously pivot from the front-to-back direction to the left-to-right direction, that is, from the ±x-axis direction to the ±y-axis direction, and rotate along the direction of the pivot. In other words, each caster 92C is allowed to pivot about the z-axis direction (up-down direction) and rotate along any direction from the front-to-back direction to the left-to-right direction as a result of the aforementioned pivoting.

[0047] In the joining device 1, which has wheels 92B and casters 92C configured in this way, the joining device 1 (travel system 9) can move together with the supply system 10 by rotating each wheel 92B and each caster 92C in the front-rear direction. That is, when an operator performing the joining work of the waterproof sheet 100 holds the handle 93 and rotates each wheel 92B and each caster 92C in the +x axis direction (forward direction), the vehicle body 91, i.e., the joining device 1, moves forward in the +x axis direction (forward direction), and when the operator rotates each wheel 92B and each caster 92C in the -x axis direction, the vehicle body 91, i.e., the joining device 1, moves backward in the -x axis direction. Furthermore, 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 aligned with the x axis direction (forward direction), and the opposing casters 92C each travel along a pair of wheel travel lines Lk aligned with the x axis direction (forward direction). More specifically, of the opposing wheels 92B and casters 92C in the y axis direction (left-right direction), the wheel 92B and caster 92C located on the +y axis side travel along wheel travel line Lk1, and the wheel 92B and caster 92C located on the -y axis side travel along wheel travel line Lk2.

[0048] Furthermore, in the joining device 1 (travel system 9), as described above, a pair of wheels 92B are provided on the +x axis side (front side) of the frame 94, which are only allowed to rotate along the front-rear direction without pivoting, and a pair of casters 92C are provided on the -x axis side (rear side) of the frame 94, which are allowed to pivot around the z axis and rotate along any direction from the front-rear direction to the left-right direction. In addition, the handle 93 that the worker grips when joining the waterproof sheet 100 is supported on the rear side of the frame 94 via a pole 96 that protrudes upward from it, as described later.

[0049] Therefore, when an operator performs the joining work of the waterproof sheet 100, and the operator holds the handle 93, when the operator moves the joining device 1 (travel system 9) forward in the +x axis direction (forward direction), the joining device 1 (vehicle body 91) is steered at the rear wheels. By making the travel system 9 steered at the rear wheels in this way, the operation of the handle 93 in the ±y axis direction of the caster 92C located on the -x axis side allows the wheel 92B located on the +y axis side to travel along the wheel travel line Lk1, and the wheel 92B located on the -y axis side to travel along the wheel travel line Lk2, with excellent precision. Accordingly, similar to the wheel 92B, the nozzle 5 located on the +x axis side can travel along the roller travel line Ls, and furthermore, the roller 92A of the pressing part 7 located on the -x axis side of the nozzle 5 can travel along the roller travel line Ls, with excellent precision. Therefore, when the joining device 1 is moved in the +x axis direction by the operator pushing the handle 93 in the +x axis direction, the nozzle 5 and roller 92A can be continuously positioned with high positional accuracy in accordance with the overlapping portions 101 of the waterproof sheets 100B located on the roller travel line Ls. Thus, the operator can join the waterproof sheets 100B together with excellent precision at the overlapping portions 101 using the joining device 1.

[0050] The handle 93 is supported and fixed to a pole 96 that protrudes upward from the center of a connecting member 944 connected to the rear side of the side plate 942 of the frame 94 of the vehicle body 91.

[0051] As a result, an operator performing the joining work on the waterproof sheet 100 can grasp the handle 93 and, in that state, push the joining device 1 in the +x axis direction or pull the joining device 1 in the -x axis direction to move the joining device 1 forward in the +x axis direction or backward in the -x axis direction.

[0052] Furthermore, the pole 96 connecting the handle 93 to the vehicle body 91 is equipped with a lever 44, which is part of the supply system 10 described below. By operating this lever 44, the joining device 1 can be advanced in the +x axis direction, and when joining the waterproof sheets 100B at the overlapping portion 101, solvent Q can be supplied to this overlapping portion 101.

[0053] In this embodiment, as shown in Figures 1 to 4, 6 and 7, the pressing parts 7 are connected to the vehicle body 91 in a total of three, in a row, at positions between opposing wheels 92B and casters 92C in the y-axis direction, that is, between pairs of wheel running lines Lk along the x-axis direction, and aligned along the x-axis direction (forward direction).

[0054] Furthermore, each pressing section 7 has two side plates 71 (connecting plates) arranged in the y-axis direction (a perpendicular direction perpendicular to the forward direction) and facing each other with a gap in between, a plurality of rollers 92A (pressing rollers) (seven in this embodiment) positioned between the two side plates 71, and four connecting members 72 connected to the two side plates 71, respectively.

[0055] In the pressing section 7, each roller 92A is rotatably supported by the two side plates 71 (first roller indicating member and second roller supporting member) via an axle (rotating axis), with one end and the other end of each roller spaced apart along the x-axis direction (forward direction). Two connecting members 72 (first connecting member and second connecting member) connected at the upper ends of the two side plates 71 are connected to the top plate 941 of the vehicle body 91, thereby rotatably supporting the multiple rollers 92A with respect to the vehicle body 91 (top plate 941) via the connecting members 72.

[0056] As described above, in this embodiment, multiple rollers 92A are provided in one pressing section 7. In Figures 2 and 6, one pressing section 7 is equipped with seven rollers 92A, but the number may be two or more, or less than seven, or seven or more.

[0057] In the pressing section 7, each roller 92A is set to a size that can encompass the width of the overlapping section 101, and as the vehicle body 91, i.e., the joining device 1, moves, the wheels 92B rotate, and so do the rollers 92A. Therefore, for example, when the vehicle body 91 is moved forward in the +x axis direction by the operation of the joining device 1 by an operator, each wheel 92B rotates 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, each wheel 92B rotates 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 along the roller travel line Ls aligned with the x axis direction between pairs of wheel travel lines Lk on which opposing wheels 92B travel. The position on which the roller 92A travels corresponds to the overlapping portion 101 formed when the waterproof sheet 100BB and the waterproof sheet 100BA overlap at their edges. After the solvent Q is supplied from the nozzle 5 of the supply system 10 (described later), the overlapping portion 101 is compacted from the front side of the waterproof sheet 100BA by the roller 92A, thereby joining the waterproof sheet 100BA and the waterproof sheet 100BB.

[0058] Furthermore, each roller 92A in this configuration is positioned between two side plates 71 (first roller support member and second roller support member) in the pressing section 7, with one end and the other end of the roller 92A rotatably connected to the two side plates 71, respectively. In addition, these two side plates 71 are connected to the frame 94 (top plate 941) via a total of four connecting members 72. More specifically, as shown in Figures 6 and 7, the two side plates 71 are connected such that two connecting members 72 (first connecting members) are connected to one side plate 71 (first roller support member), and two connecting members 72 (second connecting members) are connected to the other side plate 71 (second roller support member).

[0059] Furthermore, the connecting member 72 (first connecting member) connected to one side plate 71 and the connecting member 72 (second connecting member) connected to the other side plate 71 each have a shaft portion 74 (first shaft member and second shaft member) that is slidably connected to the top plate 941 in the vertical direction (z-axis direction), and a coil portion 73 (first spring and second spring) that is coil-shaped (spring-shaped) and acts as a biasing member with the shaft portion 74 inserted inside on the underside of the top plate 941. The shaft portion 74 is connected to the top plate 941 in a state that resists the spring force of the coil portion 73.

[0060] With the connecting member 72 having such a configuration and equipped with a biasing member, the coil portions 73 (first spring and second spring) of the connecting member 72 connected to one side plate 71 (first connecting member) and the connecting member 72 connected to the other side plate 71 (second connecting member) expand and contract independently at each pressing portion 7, thereby biasing the roller 92A against the frame 94 (top plate 941) downward (-z axis direction) so that it can swing vertically (z axis direction) at one end and the other end (each end) independently (see Figures 2, 3, 6, and 7).

[0061] Therefore, in each pressing section 7, the roller 92A is biased downward (-z-axis direction) at one end and the other end, respectively, so as to be able to swing vertically (z-axis direction) relative to the top plate 941 (vehicle body 91). Thus, when joining the waterproof sheet 100BA and the waterproof sheet 100BB by rolling the waterproof sheet 100BA from its front side with the roller 92A of the pressing section 7, the magnitude of the load applied to the waterproof sheet 100BA can be set to a desired magnitude by inserting coil sections 73 with different biasing forces into the shaft section 74.

[0062] Furthermore, when joining waterproof sheets 100BA and 100BB, even if there are irregularities or steps on the floor where the waterproof sheets 100 are laid, one end and the other end of the roller 92A can independently swing (move) vertically (in the z-axis direction) relative to the top plate 941 (vehicle body 91), allowing the roller 92A to follow the shape of these irregularities. Therefore, the roller 92A can overcome these irregularities, and the joining of waterproof sheets 100BA and 100BB at the overlapping portion 101 can be reliably performed even in the waterproof sheets 100 corresponding to the position where the irregularities are formed on the floor. In other words, the compaction of the overlapping portion 101 of the waterproof sheets 100B by the roller 92A can be performed with excellent precision.

[0063] Furthermore, as shown in Figures 2 and 6, the pressing section 7, each equipped with multiple rollers 92A, is independently connected to the vehicle body 91 in a row of three, along the x-axis direction (forward direction). In this way, multiple (seven in this embodiment) rollers 92A capable of following the shape of uneven surfaces are provided for each pressing section 7, and multiple (three in this embodiment) pressing sections 7 are independently connected to the vehicle body 91 along the x-axis direction. By configuring each pressing section 7 in this way, each roller 92A of a single pressing section 7 can independently follow the shape of uneven surfaces with virtually no influence on adjacent rollers 92A in the x-axis direction. Therefore, the joining of the waterproof sheet 100BA and the waterproof sheet 100BB can be performed with excellent precision.

[0064] Furthermore, in the pressing section 7 equipped with multiple rollers 92A, it is preferable that the spring elastic force is set to be greater for the pressing section 7 located at the rear than for the pressing section 7 located at the front, by using coils 73 of the connecting members 72 of each pressing section 7 that have different spring elastic forces. Specifically, it is preferable that the pressing force applied to the waterproof sheet 100BA by the pressing section 7 located at the front is 2 kg / pressing section, and the pressing force applied to the waterproof sheet 100BA by the two pressing sections 7 located at the rear is 5 kg / pressing section each. As a result, the joining of the waterproof sheet 100BA and the waterproof sheet 100BB at the overlapping section 101 is temporarily performed by the pressing section 7 located at the front, and then the final joining is performed by the two pressing sections 7 located at the rear. Therefore, the joining of waterproof sheet 100BA and waterproof sheet 100BB can be carried out with superior strength.

[0065] The number of pressing parts 7 arranged on the vehicle body 91 (frame 94) is three along the +x axis direction, that is, along the roller running line Ls, but there may be more or fewer than three, and the number is not limited to three; there may even be just one. However, by providing multiple pressing parts as in this embodiment, the joining of the waterproof sheet 100BA and the waterproof sheet 100BB can be carried out more reliably.

[0066] The nozzle support section 3 supports the nozzle 5 of the supply system 10, and in this embodiment, as shown in Figures 1 to 4, 8 and 9, it is connected to the vehicle body 91 via the nozzle support section swing mechanism 6 on the front side of the vehicle body 91, i.e., on the +x axis side of the vehicle body 91. As a result, the nozzle support section 3 positions the nozzle 5 in front of the roller 92A of the pressing section 7 (on the +x axis side), corresponding to the overlapping portion 101 of the waterproof sheets 100B.

[0067] As shown in Figures 8 and 9, the nozzle support section 3 includes a first support section 33 that is rotatably connected to the nozzle support section swing mechanism 6 in parallel to the xz plane, and a second support section 34 that supports the nozzle 5.

[0068] This first support section 33 has two side plates 331, a bottom plate 334, two shaft sections 332, and two connecting plates 336.

[0069] Of these, the bottom plate 334 is a flat plate arranged parallel to the xy plane, and side plates 331, which are arranged along the z axis, are joined to its -y axis side (right side) and +y axis side (left side), respectively.

[0070] Furthermore, the two connecting plates 336 are each elongated objects extending in the x-axis direction, and are arranged facing each other along the y-axis direction with a gap in between, with the end on the -x-axis side (rear side) joined to the front plate 61 of the nozzle support swing mechanism 6.

[0071] Furthermore, the two shaft portions 332 have an overall cylindrical shape and are inserted into holes provided along the y-axis direction in the side plate 331 and connecting plate 336 on the -y-axis side (right side), and holes provided along the y-axis direction in the side plate 331 and connecting plate 336 on the +y-axis side (left side). As a result, the first support portion 33 and subsequently the second support portion 34, i.e., the nozzle support portion 3, are fixed to the nozzle support portion swing mechanism 6 so as to be rotatable parallel to the xz plane, with the shaft portion 332 inserted into the holes provided along the y-axis direction (left-right direction) as the pivot point. Therefore, the shaft portion 332 constitutes the first pivot point that allows the nozzle support portion 3 to rotate around its axis relative to the nozzle support portion swing mechanism 6. Furthermore, the configuration of the nozzle support 3 that allows the nozzle support 3 to rotate around the first pivot point is not limited to the configuration described above. For example, the nozzle support 3 can also be made rotatable around the first pivot point by applying the configuration of the nozzle support swing mechanism 6, which will be described later, that allows the nozzle support swing mechanism 6 to rotate around the second pivot point.

[0072] Furthermore, the second support section 34 includes a side plate 341, a top plate 342, two wheels 343 rotatably supported on the side plate 341, a connecting member 344 that connects the flow path 31 and the top plate 342, and a connecting member 345 that connects the top plate 342 and the nozzle 5.

[0073] Of these, the side plate 341 is a flat plate arranged along the z-axis direction. The two wheels 343 are disc-shaped and are supported at the lower end of the side plate 341, on its side surface, with a gap between them, so as to be rotatable around the thickness direction of the side plate 341 as the axis of rotation. When the vehicle body 91 moves forward, the wheels 343 rotate, and the second support part 34 moves together with the vehicle body 91 while supporting the nozzle 5.

[0074] Furthermore, the top plate 342 is a long object arranged parallel to the xy plane, and the +z-axis side (upper side) end of the side plate 341 is joined to one end of the top plate 342. The connecting member 344 is cylindrical and is inserted into a hole provided in the bottom plate 334 of the first support part 33 along the z-axis direction, connecting the tip of the flow path 31 to the other end of the top plate 342. As a result, the flow path 31 is fixed to the second support part 34, and the second support part 34 is fixed to the first support part 33 so as to be rotatable parallel to the xy plane, with the connecting member 344, which is inserted into a hole provided along the z-axis direction (vertical direction), as the pivot point.

[0075] Furthermore, the connecting member 345 is cylindrical in shape and positioned along the z-axis direction. At its +z-axis side (upper side), it connects one end of the top plate 342 to the -z-axis side surface (lower side) of the top plate 342. Additionally, at its -z-axis side (lower side), it connects the base end of the nozzle 5 so that the nozzle 5 protrudes parallel to the xy-plane and opposite the side plate 341. As a result, the nozzle 5 can be rotated around the connecting member 344 as the pivot point of the second support portion 34 relative to the first support portion 33, allowing it to take on both a position where the tip of the nozzle 5 faces the -y-axis side (right side) (first position), as shown in Figure 8(a), and a position where the tip of the nozzle 5 faces the +y-axis side (left side), as shown in Figure 8(b).

[0076] Furthermore, when the nozzle 5 is fixed to the top plate 342 via the connecting member 345, it is positioned to correspond to the gap between the two wheels 343 (second wheels), thereby allowing the tip of the nozzle 5 to be stably positioned to correspond to the overlapping portion 101 of the waterproof sheets 100B.

[0077] Furthermore, the connecting members 344, 345, and the top plate 342 each have internal channels (not shown) through which the solvent Q flows. Therefore, as shown in Figure 8, by connecting the tip of the channel 31 to the +z-axis side (upper side) end of the connecting member 344, and connecting the base end of the nozzle 5 to the -z-axis side (lower side) end of the connecting member 345, the solvent Q from the channel 31 can be supplied to the nozzle 5 via the internal channels in the connecting members 344, 345, and the top plate 342.

[0078] Furthermore, by connecting the flow path 31 to the connecting member 344, which serves as the pivot point for the second support portion 34 to rotate parallel to the xy plane, and by forming an internal flow path in this connecting member 344, it is possible to reliably prevent the flow path 31 from becoming an obstacle when the second support portion 34 rotates, thereby allowing the second support portion 34 to rotate smoothly.

[0079] As shown in Figures 1 to 4, 8 and 9, the nozzle support pivot mechanism 6 is located between the nozzle support 3 and the vehicle body 91 in the x-axis direction and supports the nozzle support 3, which supports the nozzle 5, so that it can move in the ±z-axis direction relative to the vehicle body 91.

[0080] This nozzle support swing mechanism 6 includes a front plate 61, two side plates 62, a shaft portion 63, and two connecting plates 64.

[0081] Of these, the front plate 61 is a long piece extending in the y-axis direction and positioned parallel to the yz-plane. Side plates 62, which are arranged parallel to the xz-plane and along the x-axis direction, are joined to its -y-axis side (right side) and +y-axis side (left side), respectively. Thus, the front plate 61 and the side plates 62 form a U-shaped frame member.

[0082] Furthermore, the two connecting plates 64 are elongated objects extending in the z-axis direction parallel to the xz-plane, and are arranged facing each other along the y-axis direction with a gap in between. The ends on the -z-axis side (downward side) are joined to the +x-axis side (front side) of the two side plates 942 of the frame 94.

[0083] Furthermore, the shaft portion 63 has an overall cylindrical (rod-like) shape and is inserted through holes provided along the y-axis direction in the side plate 62 and connecting plate 64 on the -y-axis side (right side) and the side plate 62 and connecting plate 64 on the +y-axis side (left side). As a result, the nozzle support swing mechanism 6 and thus the nozzle support portion 3 are fixed so as to be rotatable parallel to the xz plane with respect to the side plate 942 (frame 94), with the shaft portion 63, which is inserted through holes provided along the y-axis direction (left-right direction), as the pivot point. Therefore, the shaft portion 63 constitutes a second pivot point that allows the nozzle support swing mechanism 6 to rotate around its axis relative to the frame 94 and thus the vehicle body 91. Furthermore, the configuration of the nozzle support swing mechanism 6, which allows the nozzle support swing mechanism 6 to rotate around the second pivot point, is not limited to the configuration described above. For example, the nozzle support swing mechanism 6 can also be made rotatable around the second pivot point by applying the configuration of the nozzle support 3, which allows the nozzle support 3 to rotate around the first pivot point, as described above.

[0084] In the nozzle support section 3, which comprises a first support section 33 and a second support section 34 as described above, the second support section 34 is rotatably fixed to the first support section 33, which is connected to the nozzle support section swing mechanism 6, with the connecting member 344 provided on the second support section 34 as the pivot point (around the axis). Therefore, as shown in Figure 8, the rotation of the second support section 34 relative to the first support section 33 allows the nozzle 5 fixed to the second support section 34 to also be rotated in the directions of arrows β1 and β2, with the axis of the connecting member 344 along the z-axis as the pivot point, i.e., around the z-axis.

[0085] As a result, when inserting the nozzle 5 into the back of the upper waterproof sheet 100BA prior to joining the waterproof sheets 100B together using the joining device 1, the nozzle 5 is rotated in the direction of arrow β1 to a position where the tip of the nozzle 5 faces the +y axis (second position; see Figure 8(b)), and then rotated in the direction of arrow β2 to a position where the tip of the nozzle 5 faces the -y axis (first position; see Figure 8(a)), thereby making the insertion operation easy. Furthermore, when removing the nozzle 5 from the back of the waterproof sheet 100B, the nozzle 5 is rotated again in the direction of arrow β1 to perform the removal operation. In this way, the insertion and removal operations of the nozzle 5 can be performed quickly and smoothly by making the nozzle 5 rotatable around the z axis.

[0086] Furthermore, the top plate 342 and the bottom plate 334 are provided with two holes and one hole, respectively, so that a communication hole is formed between them when the tip of the nozzle 5 is facing the -y axis (see Figure 8(a)) and when the tip of the nozzle 5 is facing the +y axis (see Figure 8(b)). When the nozzle 5 is rotated around the z axis, the fixing rod 346 is removed from the communication hole. Also, as shown in Figure 8(a), when the tip of the nozzle 5 is facing the -y axis, the fixing rod 346 is inserted through the communication hole, thereby fixing the second support part 34 to the first support part 33 in this position. Therefore, when the joining device 1 is advanced along the +x axis to join the waterproof sheet 100BA and the waterproof sheet 100BB, it is possible to reliably prevent misalignment of the nozzle 5 caused by the rotation of the nozzle 5 in the direction of arrow β1. Furthermore, as shown in Figure 8(b), when the tip of the nozzle 5 is positioned to face the +y axis, the second support portion 34 can be fixed to the first support portion 33 in this position by inserting the fixing rod 346 through the communication hole. The fixing rod 346 may be inserted into the through hole by fitting or screwing, and it may also be configured so that both the insertion position in which the fixing rod 346 is inserted and the removal position in which the fixing rod 346 is removed can be moved by operating a lever connected to the fixing rod 346.

[0087] Furthermore, in the nozzle support section 3 and the nozzle support section swing mechanism 6, as described above, the first support section 33 and subsequently the second support section 34, i.e., the nozzle support section 3, are fixed so as to be rotatable with respect to the nozzle support section swing mechanism 6 connected to the frame 94, with the shaft section 332 of the first support section 33 as the pivot point (second pivot point). Therefore, by the rotation of the first support section 33 relative to the nozzle support section swing mechanism 6, the first support section 33 and subsequently the second support section 34, i.e., the nozzle support section 3, can be rotated in the directions of arrows α1 and α2, respectively, with the axis of the shaft section 332 along the y-axis as the pivot point, i.e., around the y-axis, as shown in Figures 8(b) and 9(a).

[0088] Furthermore, the nozzle support swing mechanism 6 and, by extension, the nozzle support 3, are fixed to the frame 94 of the vehicle body 91 so as to be rotatable, with the shaft portion 63 of the nozzle support swing mechanism 6 as the pivot point (first rotation point). Therefore, as shown in Figure 9(a), the rotation of the nozzle support swing mechanism 6 relative to the frame 94 allows the nozzle support swing mechanism 6 and, by extension, the nozzle support 3 to be rotated in the directions of arrows α3 and α4, with the axis of the shaft portion 63 along the y-axis as the pivot point, i.e., around the y-axis.

[0089] Therefore, by rotating the nozzle support 3 around the axis of the shaft portion 332 of the nozzle support 3 as the pivot point (second pivot point), and by rotating the nozzle support swing mechanism 6 and consequently the axis of the shaft portion 63 of the nozzle support 3 as the pivot point (first pivot point), the nozzle 5 fixed to the second support portion 34 of the nozzle support 3 can also be moved along with these rotations. In other words, by rotating the nozzle support 3 around the y-axis parallel to the wheel 92B, the nozzle 5 can be supported so as to be movable in the z-axis direction (vertical direction) relative to the frame 94 (vehicle body 91). Furthermore, the nozzle support swing mechanism 6 and the nozzle support 3 can support the nozzle 5 so as to be movable downwards due to the weight of the second support portion 34 (nozzle support 3).

[0090] The second support section 34 has a wheel 343 (second wheel) that is rotatably supported at the lower end of the side plate 341 (second support section 34) with the thickness direction of the side surface of the side plate 341 as the axis of rotation. This configuration allows the wheel 343 to rotate around the y-axis when the nozzle 5 is inserted into the back side of the waterproof sheet 100BA located above it, that is, into the overlapping portion 101 of the waterproof sheets 100B, and positioned along the y-axis as shown in Figure 8(a). Therefore, when the vehicle body 91 moves forward along the x-axis, the nozzle support section 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, as shown in Figure 9(a).

[0091] In this way, when the vehicle body 91 moves forward, that is, 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, and the side plate 341 of the second support part 34 moves forward. As a result, the nozzle 5 fixed to the side plate 341 can be accurately suppressed or prevented from shifting position away from the overlapping portion 101 of the waterproof sheets 100B.

[0092] In particular, the nozzle 5 can move up and down continuously, allowing it to be positioned both below the frame 94 (vehicle body 91) and above the frame 94 (vehicle body 91). Furthermore, the nozzle 5 is configured to move downward due to the weight of the second support part 34. Therefore, when joining the waterproof sheet 100BA and the waterproof sheet 100BB, even if there are irregularities, or steps, on the floor where the waterproof sheet 100 is laid, the side plate 341 equipped with the wheels 343, i.e., the second support part 34, can be made to follow the shape of these irregularities, allowing the wheels 343 to rotate. As a result, the nozzle 5 fixed to the side plate 341 can also be made to follow the shape of these irregularities, thus more accurately suppressing or preventing the nozzle 5 from shifting position relative to the overlapping portion 101 of the waterproof sheets 100B. Therefore, solvent Q can be supplied to the overlapping portion 101 of the waterproof sheets 100B with excellent precision.

[0093] Furthermore, if it is possible to reduce friction between the lower end of the side plate 341 provided by the second support part 34 and the surface of the waterproof sheet 100BB when the vehicle body 91 moves forward, the placement of the wheels 343 relative to the lower end of the side plate 341 can be omitted.

[0094] Furthermore, the nozzle support portion 3 can be rotated around the axis portion 63 of the nozzle support portion swing mechanism 6 relative to the frame 94 (vehicle body 91), as shown in Figure 9(a), to a position where the nozzle support portion 3, i.e., the nozzle 5, is positioned corresponding to the overlapping portion 101 of the waterproof sheets 100B (liquid material application position), and as shown in Figure 9(b), the nozzle support portion 3, i.e., the nozzle 5, is positioned away from the waterproof sheet 100B in the +z-axis direction (height direction) and corresponds to the vehicle body 91 in the x-axis direction, i.e., a position above the vehicle body 91 (retracted position). By configuring the joining device 1 so that the nozzle support portion 3, i.e., the nozzle 5, can be positioned above the vehicle body 91, the joining device 1 can be moved efficiently, especially when the waterproof sheet 100B is not yet laid, and as a result, the workability of laying the waterproof sheet 100B can be improved.

[0095] Furthermore, the rotation angle range of the nozzle support portion 3, with the shaft portion 63 as the pivot point, between the liquid material application position shown in Figure 9(a) and the retracted position shown in Figure 9(b), is preferably in the range of 0° to 180°, and more preferably in the range of 0° to 150°. This ensures that the nozzle support portion 3 is reliably positioned above the vehicle body 91 in the retracted position.

[0096] Furthermore, a locking plate 65, which is an elongated object extending in the z-axis direction, is joined to the side plate 942 on the +y-axis side of the frame 94 (vehicle body 91) with its plane positioned approximately parallel to the xz-plane, and protruding from the side plate 942 in the +z-axis direction. As a result, when the nozzle support part 3 is positioned in the retracted position, this locking plate 65 functions as a locking part that secures the nozzle support part 3, allowing the nozzle support part 3 to be stably positioned on the upper side of the vehicle body 91.

[0097] Furthermore, on the +x axis side of the frame 94 (vehicle body 91), the nozzle support pivot mechanism 6 has a U-shaped frame member, composed of a front plate 61 and a side plate 62, fixed to the frame 94 so as to pivot around the axis of the shaft portion 63. This frame member, consisting of the front plate 61 and the side plate 62, is U-shaped, and its inside is a space. Therefore, when an operator moves the joining device 1 forward in the +x axis direction while holding the handle 93, the operator can visually confirm the position of the nozzle 5 through the inside of this frame member. Thus, to improve visibility, the nozzle 5 can be positioned relative to the overlapping portion 101 of the waterproof sheets 100B.

[0098] The supply system 10 is mounted on the vehicle body 91 of the running system 9 and, while running together with the running system 9, is a structure that supplies solvent Q to the waterproof sheet 100, more specifically to the overlapping portion 101 where two waterproof sheets 100B overlap.

[0099] As shown in Figure 5, the supply system 10 includes a storage section 2 for storing 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 the overlapping section 101 where the waterproof sheets 100B overlap, a flow rate adjustment section 41 for adjusting the flow rate of solvent Q discharged from the nozzle 5, and an on / off valve 43 for opening and closing the passage of solvent Q in the flow path 31. The storage section 2, flow rate adjustment section 41, on / off valve 43, and nozzle 5 are arranged in this order and are communicating with each other via the flow path 31.

[0100] The various components of the supply system 10, which has the above configuration, are arranged on the vehicle body 91 of the running system 9. The various components of this supply system 10 will be described below.

[0101] In this embodiment, the storage section 2 is composed of a cylindrical tank (solvent tank), as shown in Figure 1.

[0102] This storage unit 2 is fixed to a pole 96 above it via a flow rate adjustment unit 41, a flow path 31, and an on / off valve 43, which will be described later, and is thus positioned on the vehicle body 91.

[0103] The storage section 2 stores solvent Q, which is supplied to the overlapping section 101 and used to weld the waterproof sheets 100B together (waterproof sheet 100BA and waterproof sheet 100BB) at the overlapping section 101. While solvent Q is not particularly limited, examples include tetrahydrofuran (THF), nitrobenzene, carbon tetrachloride, pyridine, ethyl acetate, cyclohexanone, methyl ethyl ketone (MEK), and other ketones; toluene, methyl alcohol, isopropyl alcohol, and other alcohols. One or more of these can be used in combination, but tetrahydrofuran is preferred. Tetrahydrofuran exhibits excellent volatility and dissolves various resin materials. Therefore, it is preferred as a solvent for welding the waterproof sheets 100B together.

[0104] At the bottom (lower end) of the storage section 2, one end (base end) of a flow channel 31, whose other end (tip) communicates with the nozzle 5, is connected. Since the storage section 2 is located above the nozzle 5 in the vertical direction, the solvent Q stored in the storage section 2 is supplied to the nozzle 5 via the flow channel 31 by its own weight.

[0105] The flow path 31 is liquid-tightly connected to the bottom of the storage section 2, the flow rate adjustment section 41, the on / off valve 43, and the nozzle 5, thereby being positioned on the vehicle body 91.

[0106] This flow path 31 is connected at one end to the storage section 2 and at the other end to the nozzle 5, respectively, thereby supplying the solvent Q stored in the storage section 2 to the nozzle 5.

[0107] Furthermore, the flow path 31 can be partially or entirely composed of a metal or resin pipe through which the solvent Q passes. However, if the solvent Q is a strong organic solvent such as tetrahydrofuran, it is preferable to use a Teflon® tube or a silicone tube.

[0108] The flow path 31 may consist of multiple pipes connected via joints, or it may consist of a single pipe. Furthermore, the pipe may be bent or curved at one or more points along its longitudinal direction.

[0109] The nozzle 5 is liquid-tightly connected to the other end (tip) of the flow path 31, that is, the tip opposite to the reservoir 2, and is positioned on the vehicle body 91.

[0110] In this embodiment, the nozzle 5 is composed of a needle-shaped hollow metal body, and at its base end it communicates with the flow path 31. As shown in Figure 5, from its tip end to its central part, it opens towards the rear, i.e., towards the -x axis direction, and has an outlet 51 that discharges the solvent Q that has passed through the flow path 31 to the overlapping portion 101 of the waterproof sheets 100B. The solvent Q discharged from the outlet 51 is used to join the waterproof sheets 100B together, i.e., waterproof sheet 100BA and waterproof sheet 100BB. When the solvent Q is discharged from the outlet 51, the nozzle 5 protrudes parallel to the xy plane towards the -y axis direction. Furthermore, the nozzle 5 may be provided with a reinforcing material to reinforce the nozzle 5.

[0111] Furthermore, the solvent Q discharged from the discharge port 51 of the nozzle 5 may take any form, such as a waterfall, droplets, or mist, by appropriately setting the shape of the discharge port 51, the flow rate of the solvent Q in the flow rate adjustment unit 41, etc.

[0112] Then, as shown in Figures 1 and 5, when dispensing solvent Q, the nozzle 5 is inserted from one side in the width direction of the waterproof sheet 100B, that is, from the +y axis direction side, into the back side of the upper waterproof sheet 100BA (between waterproof sheet 100BA and waterproof sheet 100BB).

[0113] The supply system 10 has such a nozzle 5, and by discharging solvent Q from this nozzle 5, solvent Q is supplied to the overlapping portion 101 of the waterproof sheets 100B.

[0114] In this embodiment, the supply system 10 has one nozzle 5, but it is not limited to this, and may have two or more nozzles.

[0115] The flow rate adjustment unit 41 is fixed above the on-off valve 43, which will be described later, located on the frame 94, via a flow path 31, and is thus positioned on the vehicle body 91. The flow rate adjustment unit 41 is also provided in the middle of the line between the storage unit 2 and the nozzle 5, connected to the flow path 31.

[0116] This flow rate adjustment unit 41 is composed of, for example, a variable throttle valve. This allows the flow rate adjustment unit 41 to continuously adjust the flow rate of solvent Q passing through the flow path 31 by changing the throttle opening. With such a flow rate adjustment unit 41, the appropriate amount of solvent Q can be supplied from the nozzle 5 without excess or deficiency.

[0117] The flow rate adjustment unit 41 may be configured to adjust the flow rate of solvent Q by manual operation, or it may be configured to automatically adjust the flow rate of solvent Q based on various conditions, such as the viscosity of solvent Q.

[0118] Furthermore, in this embodiment, a drain 46 is provided between the storage unit 2 and the flow rate adjustment unit 41, connected to the flow path 31. This allows air bubbles to be removed through the drain 46 if they enter the flow path 31. Also, when replacing the solvent Q, the unused solvent Q stored in the storage unit 2 can be drained through the drain 46.

[0119] The on-off valve 43 is fixed on a nozzle support part 3 connected to the frame 94, and is thus positioned on the vehicle body 91 via the nozzle support part 3. The on-off valve 43 is also provided in the middle of the flow rate adjustment unit 41 and the nozzle 5, connected to the flow path 31.

[0120] This on-off valve 43 is, for example, a gate valve, and as shown in Figures 1 and 5, it is connected via a wire 45 to a lever 44 provided in the middle of the pole 96, and is configured so that the on-off valve 43 can be opened and closed by operating the lever 44. This allows the worker performing the joining work of the waterproof sheet 100 to switch the supply of solvent Q from the nozzle 5 to the overlapping portion 101 on or off by operating the lever 44.

[0121] Then, when joining the waterproof sheets 100B together using the joining device 1, the joining device 1 is advanced along the +x axis by being pushed by the operator, and the on / off valve 43 is opened by the operator operating the lever 44, thereby connecting the storage section 2 and the nozzle 5 via the flow path 31 (see Figure 5). Due to the weight of the solvent Q stored in the storage section 2, the solvent Q stored in the storage section 2 is pushed out to the outside of the storage section 2, that is, to the flow path 31 side connected to the bottom of the storage section 2. As a result, the solvent Q, which has been adjusted to an appropriate flow rate by the flow rate adjustment section 41, is discharged from the nozzle 5 via the flow path 31, and the waterproof sheets 100B can be melted at the overlapping section 101.

[0122] At this time, in the direction of travel of the vehicle body 91, the nozzle 5 is located in front of each roller 92A. Therefore, after the waterproof sheet 100B is melted at the overlapping section 101, that is, after the solvent Q is supplied via the nozzle 5 by the supply system 10, the waterproof sheets 100B are compacted from the front side at the overlapping section 101 by the rollers 92A provided by the running system 9 (see Figures 1 and 2, etc.).

[0123] By this rolling pressure, the waterproof sheets 100B melted by the supply of the solvent Q are joined to each other at the overlapping portion 101. As a result, the waterproof property between the waterproof sheet 100BA and the waterproof sheet 100BB at the overlapping portion 101 is ensured. By supplying the solvent Q to the overlapping portion 101 through the nozzle 5 and rolling the waterproof sheet 100B by the roller 92A after the supply of the solvent Q, using the joining device 1 as described above, the waterproof sheet 100 can be joined using the joining device 1. The supply of the solvent Q and the rolling of the waterproof sheet 100B constitute a joining process (waterproof sheet joining method) using the joining device 1. After the completion of the joining process, the nozzle 5 is removed from between the waterproof sheets 100B.

[0124] Also, in the joining of the waterproof sheets 100B at the overlapping portion 101 using the joining device 1 as described above, as shown in FIGS. 1 and 4, in the traveling system 9, the roller 92A provided in the pressing portion 7 travels along the overlapping portion 101 on the roller traveling line Ls where the front side of the waterproof sheet 100BA (first waterproof sheet) is rolled. In the supply system 10, the storage portion 2 mounted on the vehicle body 91 travels on a wheel traveling line Lk that is different from the roller traveling line Ls and parallel to the roller traveling line Ls.

[0125] The vehicle body 91 and the pressing portion 7 traveling on different lines Ls and Lk are joined via a connecting member 72 provided in the pressing portion 7. By this connecting member 72, the pressing portion 7 can swing in the vertical direction (z-axis direction) with respect to the vehicle body 91 (top plate 941) and is biased downward (-z-axis direction). Thereby, the magnitude of the load when rolling the waterproof sheet 100BA from its front side with the roller 92A provided in the pressing portion 7 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 portion 7 is A [N] and the load applied to the waterproof sheet 100B by the supply system 10 including the storage portion 2 mounted on the vehicle body 91 is B [N], it is configured to satisfy the relationship A < B.

[0126] Therefore, when compacting the waterproof sheet 100BA from the front side with the roller 92A at the overlapping section 101, even if, for example, the storage section 2 is filled with solvent Q and the weight of the vehicle body 91 increases, the roller 92A of the pressing section 7 reliably prevents a large load from being applied to the overlapping section 101, and the load A applied to the waterproof sheet 100B by the roller 92A can be set to an appropriate size for joining the waterproof sheets 100B together. Thus, when joining the waterproof sheets 100B together at the overlapping section 101, wrinkles in the waterproof sheet 100B located at the overlapping section 101 can be accurately suppressed or prevented, and the waterproof sheets 100B can be joined together with excellent precision.

[0127] <Second Embodiment> Figure 10 is a partially enlarged side view showing an enlarged view of the pressing portion of the second embodiment of the waterproof sheet joining device of the present invention, and Figure 11 is a partially enlarged front view showing an enlarged view of the pressing portion of the second embodiment of the waterproof sheet joining device of the present invention.

[0128] The following description of a second embodiment of the waterproof sheet joining device of the present invention will be made with reference to this figure, focusing on the differences from the first embodiment described above, and omitting explanations of similar matters.

[0129] This embodiment is the same as the first embodiment except that the configuration of the pressing portion 7 provided in the travel system 9 is different.

[0130] In other words, as shown in Figures 10 and 11, in this embodiment, each pressing section 7 is equipped with one roller 92A, and in each pressing section 7, the roller 92A is spaced apart from the rollers 92A of adjacent pressing sections 7 and is aligned along the x-axis direction (forward direction), with one end of the roller 92A and the other end of the roller 92A rotatably connected to two side plates 71. In other words, in this embodiment, one roller 92A is provided in one pressing section 7.

[0131] In each pressing section 7, one roller 92A is rotatably supported by two side plates 71 (first roller support member and second roller support member) via an axle (rotating axis), with one end and the other end of the roller 92A being connected to the two side plates 71 via an axle (rotating axis). At the upper ends of the two side plates 71, two connecting members 72 (first connecting member and second connecting member) are connected to the top plate 941 of the vehicle body 91, thereby rotatably supporting the roller 92A with respect to the vehicle body 91 (top plate 941) via the connecting members 72.

[0132] Thus, even when the pressing section 7 is configured such that one roller 92A is rotatably connected between two (a pair) side plates 71, the coil section 73 of the connecting member 72 expands and contracts, thereby biasing the roller 92A relative to the frame 94 in a downward direction (-z-axis direction) so that it can swing independently at one end and the other end in the vertical direction (z-axis direction). In particular, it is possible to independently bias adjacent rollers 92A in the downward direction (-z-axis direction). Therefore, when joining the waterproof sheet 100BA and the waterproof sheet 100BB, even if there are irregularities, i.e., steps, on the floor where the waterproof sheet 100 is laid, each roller 92A can independently overcome these irregularities, thus enabling the joining of the waterproof sheet 100BA and the waterproof sheet 100BB with greater precision.

[0133] In the configuration shown in Figure 10, the number of pressing parts 7 arranged on the vehicle body 91 (frame 94), i.e., the number of rollers 92A, is 5 along the +x axis direction, i.e., along the roller travel line Ls. However, it may be more or less than 5, and is not limited to that number; it may even be just 1. However, by providing multiple pressing parts as in this embodiment, the joining of the waterproof sheet 100BA and the waterproof sheet 100BB can be carried out more reliably.

[0134] The same effects as those of the first embodiment can be obtained with the waterproof sheet joining device 1 of this second embodiment.

[0135] <Third Embodiment> Figure 12 is a partially enlarged front view showing an enlarged view of the pressing portion of the third embodiment of the waterproof sheet joining device of the present invention.

[0136] The following description of a third embodiment of the waterproof sheet joining device of the present invention will be made with reference to this figure, focusing on the differences from the second embodiment described above, and omitting explanations of similar matters.

[0137] This embodiment is the same as the second embodiment except that the configuration of the pressing portion 7 provided in the travel system 9 is different.

[0138] In other words, as shown in Figure 12, in this embodiment, both one end and the other end of the axle (rotating shaft) of the roller 92A are made of spherical surfaces, and each of the two side plates 71 (connecting plates) is equipped with a spherical bearing 711, so that one end and the other end of the axle abut against and are fixed to the spherical bearing 711 of each side plate 71. As a result, in the pressing section 7, the roller 92A has its axle spherically supported by each side plate 71 (connecting plate) at both its one end and the other end.

[0139] In this way, at each end of the roller 92A, the axle is spherically supported on each side plate 71 (connecting plate), and as the coil portion 73 of the connecting member 72 expands and contracts, the roller 92A can swing in the forward and backward direction (±x axis direction) when it swings in the vertical direction (±z axis direction). In other words, the degree of freedom of swing (movement) of the roller 92A is increased.

[0140] Therefore, when joining waterproof sheet 100BA and waterproof sheet 100BB, even if there are irregularities or steps on the floor where the waterproof sheet 100 is laid, the roller 92A can more reliably overcome these irregularities. As a result, even in the waterproof sheet 100 corresponding to the location where the irregularities are formed on the floor, the joining of waterproof sheet 100BA and waterproof sheet 100BB at the overlapping portion 101 can be carried out more reliably. In other words, the compaction of the overlapping portion 101 of the waterproof sheets 100B by the roller 92A can be carried out with better precision.

[0141] The same effects as those of the first embodiment can be obtained with this third embodiment of the waterproof sheet joining device 1.

[0142] Although the waterproof sheet joining device and waterproof sheet joining method of the present invention have been described above in the illustrated embodiments, the present invention is not limited thereto. Furthermore, each part constituting the waterproof sheet joining device can be replaced with any configuration that can perform similar functions. In addition, any additional components may be added.

[0143] For example, the joining device 1 stores solvent Q as a liquid material in the storage section 2, thereby supplying solvent Q between the waterproof sheets 100B from the nozzle 5. However, instead of solvent Q, adhesive can be supplied as a liquid material between the waterproof sheets 100B to join them together.

[0144] Furthermore, in the present invention, any two or more configurations shown in the first to third embodiments may be combined.

[0145] Furthermore, in the waterproof sheet joining method of the present invention, one or more additional steps can be added for any purpose. [Explanation of symbols]

[0146] 1 Waterproof sheet joining device 2 Storage section 3. Nozzle support section 5 nozzles 6. Nozzle support swing mechanism 7 Pressing part 9. Driving system 10 Supply system 31 Flow channels 33 1st support part 34 Second support part 41 Flow rate adjustment section 43. Shut-off valve 44 Lever 45 wires 46 Drain 51 Discharge port 61 Front panel 62 Side panel 63 Shaft 64 Connecting plate 65 Locking plate 71 Side panel 72 Connecting member 73 Coil section 74 Shaft section 91 Car body 92A Roller 92B Wheel 92C Caster 93 Handle 94 frames 96 Paul 100 Waterproof Sheet 100A Waterproof Sheet 100B Waterproof Sheet 100BA Waterproof Sheet 100BB Waterproof Sheet 101 Overlapping parts 150B Insulation Panel 151 Boundary 155 Fire-resistant sheet 160 Main house 331 Side panel 332 Shaft section 334 Bottom plate 336 Connecting plate 341 Side panel 342 Top plate 343 wheels 344 Connecting member 345 Connecting member 346 Fixed rod 711 Spherical bearing 941 Top plate 942 Side panel 943 Projecting plate 944 Connecting Member Lk Wheel Running Line Lk1 Wheel Running Line Lk2 Wheel Running Line Ls Roller Running Line Q Solvent

Claims

1. A waterproof sheet bonding device used when laying a waterproof sheet on a floor surface of a building structure using a liquid material containing a solvent or adhesive, A supply system for supplying the liquid material to the waterproof sheet, The vehicle comprises a frame, a first wheel and caster rotatably supported on the frame, and a handle provided on the upper side of the frame, and a running system having a vehicle body that moves along the forward direction together with the supply system by the rotation of the first wheel and caster, The first waterproof sheet and the second waterproof sheet of the aforementioned waterproof sheet are joined together by supplying the liquid material to the overlapping portion formed by overlapping the edges of the first waterproof sheet and the second waterproof sheet of the aforementioned waterproof sheet with the second waterproof sheet on the lower side along the forward direction. After the liquid material is supplied to the overlapping portion where the first waterproof sheet and the second waterproof sheet overlap by a nozzle provided by the supply system, the overlapping portion to which the liquid material has been supplied is rolled down from the front side of the first waterproof sheet by a rotatably supported roller provided by the travel system. The travel system supports the nozzle on the front side of the vehicle body and supports the roller relative to the nozzle on the rear side of the vehicle body. The frame has two first wheels on its front side at the bottom of the frame, two casters on its rear side, and the handle on its rear side at the top of the frame. The aforementioned drive system is positioned on the front side of the vehicle body and has a nozzle support portion that supports the nozzle, The nozzle support portion is provided at its lower end in contact with the waterproof sheet, rotates as the vehicle body moves forward, and has two second wheels spaced apart from each other. A waterproof sheet joining device characterized in that, when viewed from above, the nozzle is positioned between the two second wheels.

2. The waterproof sheet joining device according to claim 1, wherein the first wheel is permitted to rotate only along the front-rear direction without turning.

3. The waterproof sheet joining device according to claim 1 or 2, wherein the caster is permitted to both pivot about an axis in the vertical direction and rotate along any direction from the front-rear direction to the left-right direction accompanying the pivot.

4. The waterproof sheet joining device according to any one of claims 1 to 3, wherein the handle is supported by the frame via a pole provided on the rear side of the frame, projecting upward from the frame.

5. The waterproof sheet joining device according to any one of claims 1 to 4, wherein the two first wheels are arranged opposite each other in the left-right direction on the front side of the frame.

6. The waterproof sheet joining device according to any one of claims 1 to 5, wherein the two casters are arranged opposite each other in the left-right direction on the rear side of the frame.

7. The waterproof sheet joining device according to any one of claims 1 to 6, wherein the vehicle body is steered to the rear wheels.

8. A method for joining waterproof sheets, characterized by having a joining step of joining the waterproof sheets using a waterproof sheet joining device according to any one of claims 1 to 7.

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