Sheet cutting tool and sheet installation tool

Abstract

To easily and accurately cut a sheet laid on a dirt floor section.SOLUTION: A sheet cutting tool (5), while both end portions of a sheet roll member (10) made by winding a sheet in a roll-shape are supported on a building structure portion (91) with a fixed width by a pair of sheet supporting bases (3 and 4), draws the sheet forward from the sheet roll member to be cut. The sheet cutting tool is equipped with a base portion (51) placed within a range of an area between the pair of sheet supporting bases on the building structure portion, a pair of abutting members (52) that extends downward from both sides in a fore-and-aft direction of the base portion and abuts on or comes close to both side surfaces of the building structure portion, and a cutting member (54) that is provided so as to project out from an upper part of a front end portion of the base portion, and has a blade extending in a fore-and-aft direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sheet cutting tool and a sheet application tool, and in particular to a sheet cutting tool and a sheet application tool for cutting longitudinally a sheet to be laid in an area adjacent to a building component of a certain width, such as the earthen floor of a foundation. [Background technology]

[0002] As shown in JP 63-83346 A (Patent Document 1), multiple sheets for the purpose of termite or moisture prevention are laid on the dirt floor of the foundation. In this case, the ends of each sheet are generally raised about 50 mm along the side of the foundation rise and then fixed with adhesive tape or the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 63-83346 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned sheet is delivered to the site in a rolled state (i.e., as a sheet roll member), and the sheet roll member is transported and laid at the site repeatedly. The prescribed sheet width is usually larger than one module (e.g., 900 to 1000 mm) which is the building standard dimension of a building, and is about twice as large, so that the sheet roll member is difficult to transport.

[0005] In addition, conventionally, the sheet was laid by rolling the sheet roll member over the dirt floor, which could have been damaged by crushed stone, etc. Furthermore, the sheet was cut (in the length direction) after the sheet roll member was rolled, while the sheet was placed on the top edge of the foundation rise, which could have been damaged by the anchor bolts protruding from the foundation rise. It was also difficult to cut the sheet straight while it was aligned with the side of the foundation rise.

[0006] As mentioned above, the width of the sheet wound on the sheet roll is about two modules, so the sheet must be cut along its length to adjust the sheet width on-site. Conventionally, workers cut the sheet with scissors after laying it on the dirt floor, which is not only time-consuming but also time-consuming. Also, it is difficult for one person to cut the sheet during strong winds.

[0007] The present invention has been made to solve the above-mentioned problems, and its object is to provide a sheet cutting tool and a sheet application jig that can easily and accurately cut sheets to be laid on dirt floors and other areas. [Means for solving the problem]

[0008] A sheet cutting tool according to one aspect of the present invention is a cutting tool for pulling a sheet forward from a sheet roll member on which the sheet is wound in a roll shape and cutting the sheet, with both ends of the sheet roll member being supported on a building component of a certain width by a pair of sheet support stands, and comprises a base portion placed within an area sandwiched between the pair of sheet support stands on the building component, a pair of abutment members extending downward from both front-to-rear sides of the base portion and abutting or close to both side faces of the building component, and a cutting member protruding from above the front end of the base portion and having a blade extending in the front-to-rear direction.

[0009] Preferably, the cutting member is formed in a hook shape having a lower piece and an upper piece each extending in the front-rear direction and connected at a front end, and a blade is formed along the lower edge of the upper piece.

[0010] More preferably, the lower piece of the cutting member extends obliquely upward toward the connecting portion with the upper piece, and the upper piece extends obliquely downward toward the connecting portion.

[0011] Moreover, it is desirable that the height of the blade of the cutting member in the attached state is approximately equal to the height of the lowermost end of the sheet roll member supported by the pair of sheet support bases.

[0012] Furthermore, in the case where the building component is a foundation rise portion having a plurality of anchor bolts protruding upward, it is desirable that the height of the blade of the cutting member in the installed state be higher than the height of the upper ends of the anchor bolts.

[0013] Preferably, the sheet cutter further includes a position adjustment member for adjusting the front-rear position of at least one of the pair of contact members.

[0014] More preferably, the position adjustment member includes a bolt that protrudes rearward from the base and is passed through a through hole provided in the abutment member in order to adjust the position of the rear contact member, and a nut that screws onto the bolt to fix the position of the abutment member, and the central axis of the bolt is arranged at an angle with respect to the horizontal line so that the rear end is slightly lower than the front end.

[0015] A sheet application jig according to another aspect of the present invention includes the sheet cutting tool described above and a pair of sheet support stands, and the sheet support stands are provided with casters that are movable in the longitudinal direction of the building component. Effect of the Invention

[0016] According to the present invention, the sheet can be cut straight by inserting the sheet pulled out from the sheet roll member supported by the pair of sheet support bases into the hook-shaped cutting member and pulling it forward. Therefore, according to the present invention, the sheet can be cut straight with ease and precision. [Brief description of the drawings]

[0017] [Figure 1] 1 is a diagram showing a schematic configuration of a sheet application jig according to an embodiment of the present invention; [Diagram 2] 2A and 2B are diagrams showing the configuration of a portion of a seat support device according to an embodiment of the present invention, in which (A) is a diagram showing one of the support bases of the seat support device as viewed from the direction indicated by IIA in FIG. 1 (from the inside), and (B) is a diagram showing this support base as viewed from the direction indicated by IIB in FIG. 2A (from the front). [Diagram 3] 1A and 1B are diagrams illustrating a schematic diagram of a function of a seat support device according to an embodiment of the present invention. [Figure 4] FIG. 2 is a side view of the sheet cutter according to the embodiment of the present invention, seen from the direction IV in FIG. [Diagram 5] 2 is a flowchart showing a sheet application method according to an embodiment of the present invention. [Figure 6] 6(A) and 6(B) are schematic diagrams showing steps P3 and P4 in FIG. 5, respectively. [Figure 7] 6(A) and 6(B) are schematic diagrams showing steps P5 and P6 in FIG. 5, respectively. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and their description will not be repeated.

[0019] <Outline of sheet installation jig configuration> Fig. 1 is a diagram showing a schematic configuration of a sheet application jig 1. Referring to Fig. 1, the sheet application jig 1 is a jig for applying a sheet to an earthen floor portion 92 surrounded by a foundation rise portion 91, and includes a sheet support tool 2 and a sheet cutter 5. The foundation rise portion 91 is a building component that extends horizontally with a constant width. An arrow A2 in Fig. 1 indicates the longitudinal direction of the foundation rise portion 91 (hereinafter referred to as the "foundation longitudinal direction").

[0020] The sheet support tool 2 and the sheet cutter 5 are placed on the upper surface 91c of the foundation rising part 91. A plurality of anchor bolts 80 are arranged protruding upward on the upper surface 91c of the foundation rising part 91. The protruding height of the anchor bolts 80 may vary depending on the series of the building, but is about 60 to 70 mm.

[0021] The sheet support 2 is a jig that supports the sheet roll member 10, on which a sheet is wound in a roll shape, on the foundation rising portion 91. In this embodiment, the sheet support 2 is divided into two support bases (sheet support bases) 3 and 4 that respectively support both ends of the sheet roll member 10. In other words, the two support bases 3 and 4 form a pair to constitute the sheet support 2.

[0022] The sheet cutter 5 is a tool for pulling out and cutting the sheet from the sheet roll member 10 toward the floor section 92 while both ends of the sheet roll member 10 are supported on the foundation rise section 91 by a pair of supports 3, 4. The direction in which the sheet is pulled out from the sheet roll member 10, i.e., the floor section 92 side, is indicated by arrow A1 in FIG. 1, and this direction is referred to as the front. The opposite side of arrow A1 is referred to as the rear. The front and rear correspond to one side and the other side, respectively, in the width direction of the foundation rise section 91 (hereinafter referred to as the "foundation width direction").

[0023] Specific configuration examples of the sheet support tool 2 and the sheet cutter 5 will be described below.

[0024] <Example of sheet support configuration> An example of the configuration of the seat support 2 will be described with reference to Figures 1 and 2. Figure 2(A) is a diagram of one (first) support base 3 of the seat support 2, as viewed from the direction indicated by IIA in Figure 1 (from the inside), and (B) is a diagram of the support base 3 as viewed from the direction indicated by IIB in Figure 1 (from the front).

[0025] 1, the seat support 2 includes a pair of facing parts 21 arranged facing each other in the longitudinal direction of the foundation, a pair of legs 23 connected to both sides of the lower end of the facing parts 21, and casters 24 fixed to each leg 23 and movable in the longitudinal direction of the foundation. The facing parts 21 and the legs 23 are typically made of a wood material. The same is true for hanging members 25 and 26 described below.

[0026] A receiving portion 22 for receiving an end portion of the core material 11 of the sheet roll member 10 is provided opposite each of the facing portions 21. The pair of legs 23 are disposed apart from each other in the foundation width direction, and a caster 24 is provided for each leg 23. This allows the sheet roll member 10 supported by the sheet support 2 to be moved along the foundation longitudinal direction.

[0027] In this embodiment, the seat support 2 is divided into a support base 3 having one of a pair of facing parts 21 (on the right side of the paper in FIG. 1) and a support base 4 having the other of the pair of facing parts (on the left side of the paper in FIG. 1), and each of these support bases 3, 4 is provided with a pair of legs 23 and a plurality of casters 24. This makes it easy to carry the seat support 2. The support bases 3, 4 are configured to be symmetrical.

[0028] As shown in Figs. 2(A) and (B), the facing portion 21 is formed of, for example, a plate-like member having a substantially rectangular shape. The receiving portion 22 is formed in a substantially U-shape, and the end portion of the core material 11 can be fitted in from above. When the sheet is drawn out from the sheet roll member 10, the core material 11 rotates in the receiving portion 22 together with the sheet roll member 10. The legs 23 are disposed on both sides of the lower end of the facing portion 21 so as to cross each other, and are formed of, for example, a rectangular column member having a length in the longitudinal direction of the foundation. When the support base 3 (or 4) is viewed from the front, the facing portion 21 and the legs 23 are connected and fixed in an inverted T-shape. Note that the facing portion 21 and the legs 23 do not have to be separate members, and may be integrally molded from a single member. In other words, in this specification, "connection" is not limited to a form in which separate objects are connected.

[0029] 2(B), a plurality of (for example, two) casters 24 are aligned in the longitudinal direction of the base on one leg 23. This allows each of the support bases 3 and 4 to stand on its own.

[0030] As shown in Fig. 2(A), the height H1 of the lower end center of each facing portion 21 based on the upper surface 91c of the foundation rising portion 91 is higher than the maximum height (upper end height) H2 of the anchor bolt 80 protruding from the upper surface 91c of the foundation rising portion 91. In Fig. 2(A), the anchor bolt 81 having the maximum height H2 and the anchor bolt 82 having a lower height are shown by imaginary lines. The height H2 is, for example, 70 mm. This allows the sheet support 2 to be freely moved along the foundation longitudinal direction without considering the position of the anchor bolt 80.

[0031] The height of the upper end of the leg 23 may be lower than the maximum height H2 of the anchor bolt 80. In this case, as shown in the figure, it is sufficient that the center of the lower end of the facing portion 21 is cut out so as not to interfere with the anchor bolt 80. Note that a range 91r in which the anchor bolts 80 (81, 82) can be arranged relative to the overall width (W1) of the foundation rising portion 91 is determined, and the interval W2 between the pair of legs 23 is larger than the width of this range 91r.

[0032] Sheet support 2 further includes a pair of hanging members 25, 26 that extend downward from both outer sides of pair of leg portions 23 and abut against or are close to both side surfaces 91a, 91b of foundation rising portion 91. Hanging members 25, 26 are formed, for example, from a substantially rectangular plate-like member. Hanging member 25 abuts against or is close to side surface 91a on the front side, and hanging member 26 abuts against or is close to side surface 91b on the rear side. This makes it possible to prevent sheet support 2 from meandering or falling off when it moves, so that the movement of sheet support 2 can be stably performed.

[0033] It is desirable that spherical or semispherical rolling elements 27 are provided on the inner surfaces of hanging members 25, 26, and hanging members 25, 26 are configured so that rolling elements 27 (only) come into contact with side surfaces 91a, 91b of foundation riser portion 91. As a result, when sheet support 2 moves, rolling elements 27 come into sliding contact with side surfaces 91a, 91b of foundation riser portion 91, allowing sheet support 2 to move smoothly. Also, the effects of unevenness on side surfaces 91a, 91b of foundation riser portion 91 can be absorbed.

[0034] Rear hanging member 26 is securely fixed to leg portion 23 with fixing members (not shown) such as screws. In other words, the upper end of hanging member 26 is fixed in face-to-face contact with the outer surface of leg portion 23. In contrast, front hanging member 25 is desirably provided so that its position in the base width direction is adjustable. In other words, seat support device 2 desirably further includes position adjustment member 30 for adjusting the position of hanging member 25 in the base width direction (front-rear position).

[0035] The position adjustment member 30 includes a bolt 31 that protrudes outward (forward) from the leg 23, and nuts 32, 33 that screw into the bolt 31. The bolt 31 is a so-called height adjustment bolt, and is fixed to the leg 23. The hanging member 25 is provided with a through hole (not shown) that penetrates in the plate thickness direction, and the bolt 31 is passed through this through hole. The hanging member 25 is clamped and fixed in position by nuts 32, 33. As shown in FIG. 2(A) and FIG. 3(A), the position of the hanging member 25 can be adjusted by adjusting the position of the nuts 32, 33 in the length direction of the bolt 31 according to the width W1 of the foundation rising portion 91. Therefore, the sheet support 2 of this embodiment can be used for the foundation of various series of buildings. The width W1 of the foundation rising portion 91 is determined in the range of, for example, 170 mm to 220 mm according to the series of the building.

[0036] Here, a partition foundation is usually disposed in cross relation to the front side of foundation rising portion 91. For this reason, it is more preferable that hanging member 25 on the front side is provided rotatably around bolt 31 as an axis. In this embodiment, bolt 31 for adjusting the position of hanging member 25 also serves as the rotation axis of hanging member 25. In this case, as shown in the figure, there is one bolt 31 supporting hanging member 25.

[0037] 2(B), hanging member 25 is formed in a vertically elongated shape, and the width (length in the foundation longitudinal direction) of hanging member 25 is sufficiently smaller than the width of hanging member 26 on the rear side. Also, the shortest distance L1 from the axis of bolt 31 to the upper corner of hanging member 25 is shorter than the shortest distance L2 between the axis of bolt 31 and upper surface 91c of foundation rising portion 91 during movement of sheet support device 2. As a result, when hanging member 25 collides with partition foundation 93 as shown in FIG. 3(B) during movement of sheet support device 2, hanging member 25 rotates about bolt 31 in reaction and can climb up onto partition foundation 93.

[0038] If sheet support 2 is further moved after hanging member 25 has climbed onto partition foundation 93, hanging member 25 will hang down again under its own weight when it passes over partition foundation 93, and will come into contact with side surface 91a of foundation rising portion 91 as described above. Therefore, according to this embodiment, sheet support 2 can be reliably moved to the desired position (sheet installation position) regardless of the presence or absence of partition foundation 93. Note that rolling bearings 40 may be provided around the through holes of hanging member 25 to allow hanging member 25 to rotate more smoothly.

[0039] <Example of sheet cutting tool configuration> An example of the configuration of the sheet cutting tool 5 will be described with reference to Fig. 1 and Fig. 4. Fig. 4 is a side view of the sheet cutting tool 5, as seen from the direction IV in Fig. 1.

[0040] 1, the sheet cutter 5 is disposed below the sheet roll member 10. The sheet cutter 5 includes a base portion 51 placed within a range of an area sandwiched between a pair of supports 3 and 4 on a foundation rising portion 91, a pair of abutment members 52 and 53 extending downward from both sides in the front-rear direction of the base portion 51 and abutting or adjacent to both side surfaces 91a of the foundation rising portion 91, and a cutting member 54 provided to protrude from above the front end portion of the base portion 51. The base portion 51 and the abutment members 52 and 53 are typically formed of a wood material, and the cutting member 54 is typically formed of a metal.

[0041] The base portion 51 has a substantially rectangular parallelepiped shape, and is disposed so that the longitudinal direction of the base portion 51 coincides with the width direction of the foundation. In other words, the base portion 51 is disposed so as to intersect with the longitudinal direction of the foundation. The longitudinal length of the base portion 51 is slightly shorter than the minimum width dimension of the foundation rising portion 91. As shown in the figure, the corners of the rear upper end of the base portion 51 may be cut out obliquely. This allows the sheet cutter 5 to be made lighter.

[0042] The cutting member 54 has a blade 56a extending in the front-rear direction. The cutting member 54 is preferably formed in a hook shape and fixed so that an opening is located on the rear side. In other words, the hook-shaped cutting member 54 with an open rear side is preferably disposed protruding from above the front end of the base portion 51. This allows the sheet pulled out from the sheet roll member 10 to be inserted into the hook-shaped cutting member 54 and pulled forward, thereby cutting the sheet straight. Therefore, the sheet can be cut easily and accurately.

[0043] More specifically, the cutting member 54 has a lower piece 55 and an upper piece 56 whose front ends are connected, and a blade 56a is formed along the lower edge of the upper piece 56. The angle between the lower piece 55 and the upper piece 56 is less than 30°. In the use state, the lower piece 55 of the cutting member 54 extends obliquely upward toward the connecting portion 57 with the upper piece 56, and the upper piece 56 extends obliquely downward toward the connecting portion 57. In other words, the blade 56a is arranged facing the rear side. This allows the sheet to be easily cut by the blade 56a of the upper piece 56 simply by inserting a sheet between the lower piece 55 and the upper piece 56 and pulling it straight forward.

[0044] At least a part of the blade 56a of the cutting member 54 is disposed so as to protrude forward from the base rising portion 91 in the attached state. The hook-shaped cutting member 54 may be constituted by the tip portion of a commercially available string cutter. In this case, the handle portion 70 may be built into the base portion 51, as shown by the dashed line in FIG.

[0045] The blade 56a may be disposed horizontally facing downward, or vertically facing backward. The cutting member 54 does not have to be shaped like a hook, in which case the blade 56a may be disposed facing upward.

[0046] Here, the height H3 (height of the lower end) of the blade 56a of the cutting member 54 is higher than the maximum height H2 (FIG. 2(A)) of the anchor bolt 80. This makes it possible to prevent the sheet from interfering with the anchor bolt 80 and being damaged when the sheet is cut.

[0047] Also, it is desirable that the height H3 (height of the front end) of the blade 56a of the cutting member 54 is approximately equal to the lowest end height H4 of the sheet roll member 10 supported by the sheet support 2. The lowest end height H4 of the sheet roll member 10 corresponds to the height of the point of action when the sheet is pulled. Specifically, the height H3 of the blade 56a of the cutting member 54 is set to be the same as the lowest end height H4 of the sheet roll member 10, or if different, the difference is set to be within 5 mm. The lowest end height H4 is the height obtained by subtracting the radius (before use) of the sheet roll member 10 (for example, about 70 mm) from the center height (for example, about 190 mm) of the core material 11 of the sheet roll member 10 based on the upper surface 91c of the foundation riser 91, and is, for example, about 120 mm. In this way, by making the height H3 of the blade 56a of the cutting member 54 approximately equal to the height of the point of action when the sheet is pulled, the sheet can be cut easily and accurately.

[0048] The abutting members 52, 53 are formed of, for example, a substantially rectangular plate-like member. The front abutting member 52 is firmly fixed to the leg 23 by a fixing member 71 such as a screw. That is, the upper end of the abutting member 52 is fixed in a state of surface contact with the outer surface of the base 51. In contrast, the rear abutting member 53 is preferably provided so that its position in the foundation width direction can be adjusted. That is, the sheet cutter 5 is preferably further provided with a position adjustment member 60 for adjusting the front-rear position of the rear abutting member 53. By fixing the position of the front abutting member 53, the degree of protrusion of the cutting member 54 from the position of the side surface 91a of the foundation rise portion 91 (front end position) can be made constant regardless of the size of the width W1 of the foundation rise portion 91.

[0049] The position adjustment member 60 includes a bolt 61 that protrudes outward (rearward) from the base portion 51, and a nut 62 that screws onto the bolt 61. The bolt 61 is a so-called height adjustment bolt, and is fixed to the base portion 51. The abutting member 53 is provided with a through hole (not shown) that penetrates in the plate thickness direction, and the bolt 61 is passed through this through hole. The nut 62 is located only on the outside of the abutting member 53, and in the attached state, the abutting member 53 comes into contact with the side surface 91b of the foundation rising portion 91 and the nut 62, thereby restricting misalignment in the foundation width direction.

[0050] 4, the position of the rear contact member 53 can be adjusted by adjusting the position of the nut 62 in the longitudinal direction of the bolt 61 according to the width W1 of the foundation rising portion 91. Therefore, the sheet cutter 5 of this embodiment can be used for the foundations of various series of buildings.

[0051] 4, the central axis B1 of the bolt 61 is inclined with respect to a horizontal line B2 so that the rear end (tip) side is slightly lower than the front end (base end). The inclination angle of the central axis B1 is less than 10°, and preferably less than 5°. In order to set the inclination angle of the bolt 61 to a predetermined angle, a long nut (not shown) inclined at a predetermined angle may be embedded in the base portion 51, and the base end of the bolt 61 may be engaged with the long nut.

[0052] In this case, the rear contact member 53 is inclined so that the lower end side is slightly further forward than the upper end side, so that the contact member 53 contacts the side surface 91b of the foundation rising portion 91 only at the lower edge 53a. Note that the front contact member 52 extends straight in the vertical direction without inclining, so that the entire portion 52a below the base portion 51 is in surface contact with the side surface 91a of the foundation rising portion 91. This makes it possible to prevent or suppress the sheet cutter 5 from coming off the front side from the foundation rising portion 91 when the sheet is cut by the cutting member 54 while being pulled forward from the sheet roll member 10.

[0053] <Sheet installation method> Further referring to Fig. 5, a sheet application method using a sheet application jig 1 including a sheet support tool 2 and a sheet cutter 5 will be described. Fig. 5 is a flow chart showing the sheet application method (steps) in this embodiment.

[0054] 5, first, the sheet support 2 is attached onto the foundation rising portion 91 (step P1). Specifically, a pair of support bases 3, 4 constituting the sheet support 2 are placed on the foundation rising portion 91 so that the receiving portions 22 face each other, and then the positions of the hanging members 25 on the front sides of the support bases 3, 4 are adjusted to sandwich the foundation rising portion 91 between the pair of hanging members 25, 26. As a result, the rolling elements 27 provided on the inner surfaces of the hanging members 25, 26 come into contact with the side surfaces 91a, 91b of the foundation rising portion 91, so that the support bases 3, 4 are attached in a state in which they can move smoothly in the longitudinal direction of the foundation.

[0055] Next, the ends of the core material 11 of the sheet roll member 10 are fitted into the sheet support 2 (step P2). Specifically, both ends of the core material 11 are fitted into the receiving portions 22 of the support bases 3 and 4. As shown in FIG. 2, when the receiving portion 22 is formed in a U-shape, the ends of the core material 11 are fitted from above. As a result, both ends of the sheet roll member 10 are supported by the pair of support bases 3 and 4 in a rotatable state on the foundation riser portion 91. Note that a separation prevention member 22a may be provided at the upper end of the receiving portion 22 to prevent the core material 11 from coming off.

[0056] When the attachment of the sheet roll member 10 to the sheet support 2 is completed in this manner, the sheet roll member 10 is moved in this state to the sheet application position (step P3). Specifically, the sheet roll member 10 is grasped and moved along the foundation longitudinal direction to the sheet application position.

[0057] As shown in Figure 6 (A), a plurality of anchor bolts 80 are positioned along the longitudinal direction of the foundation on the upper surface 91c of the foundation rising portion 91, and a partition foundation 93 is arranged so as to intersect with the foundation rising portion 91. However, according to this embodiment, the sheet roll member 10 can be moved safely and smoothly without being affected by these factors.

[0058] If the sheet width does not need to be adjusted after the sheet roll member 10 has been moved to the sheet application position, the sheet is pulled forward from the sheet roll member 10 in this state and laid on the dirt floor portion 92 (step P4), as shown in Fig. 6(B). The sheet is pulled out, for example, from the lower side of the sheet roll member 10. After the sheet is pulled out until it reaches the foundation rise portion (not shown) facing the foundation rise portion 91, the rear end of the sheet is cut off with scissors or the like.

[0059] In this way, since there is no need to roll the sheet roll member 10 on the dirt floor portion 92, this embodiment can prevent damage to the sheet. Furthermore, even after the sheet has been pulled out the length of the dirt floor portion 92, the rear end of the sheet continues to be supported on the foundation rising portion 91, so that cutting of the sheet in the length direction can be easily performed while the sheet is aligned with the side surface 91a of the foundation rising portion 91. Furthermore, the sheet can be prevented from being damaged by the anchor bolts 80 during the cutting operation.

[0060] When the sheet laying operation is completed, the sheet roll member 10 is again moved to the sheet laying position (step P3). That is, it is moved to the next sheet laying position. When laying the sheet at the edge of the dirt floor portion 92, such as the edge of the partition foundation 93, it may be necessary to adjust the width of the sheet. In such a case, the above-mentioned sheet cutter 5 is attached to the foundation rising portion 91 (step P5).

[0061] Specifically, as shown in Fig. 7(A), the base 51 of the sheet cutter 5 is placed below the sheet roll member 10, i.e., between the pair of support stands 3 and 4, and the position of the rear contact member 53 is adjusted to sandwich the foundation rising portion 91 between the pair of contact members 52 and 53. This brings the inner surfaces of the contact members 52 and 53 into contact with the side surfaces 91a and 91b of the foundation rising portion 91, respectively. After that, as shown in Fig. 7(A), the position of the sheet support 2 is adjusted using the scale 84 so that the length from the longitudinal end of the sheet roll member 10 to the cutting member 54 of the sheet cutter 5 is a desired width (for example, 1 m width).

[0062] Once the positions of the sheet support tool 2 and the sheet cutter 5 are determined in this manner, the sheet pulled out from the sheet roll member 10 is hooked onto the hook-shaped cutting member 54, and in this state, the sheet is pulled forward as shown in Fig. 7(B). This causes the sheet to be cut along the pulling direction (step P6). In this step as well, the sheet is pulled out until it reaches the foundation rise portion (not shown) facing the foundation rise portion 91, and then the rear end of the sheet is cut with scissors or the like, so that the sheet cut to the desired width can be laid directly on the dirt floor portion 92.

[0063] Thus, according to this embodiment, the sheet can be cut while being pulled while the sheet roll member 10 is supported on the foundation rising portion 91, so that the sheet can be cut with high precision regardless of the skill of the worker. Also, since there is no need to cut the sheet while it is spread out on the dirt floor portion 92, damage to the sheet due to crushed stones, etc. can be prevented. Also, cutting work can be easily performed by one person even in strong winds.

[0064] When cutting of the sheet is completed, the sheet cutter 5 is removed from the foundation rising portion 91 (step P7), and the operations from step P3 onwards are repeated.

[0065] As described above, according to this embodiment, the sheet application jig 1 includes the sheet support tool 2 and the sheet cutter 5, which improves ease of application when laying the sheet on the dirt floor 92. It is also possible to provide the sheet support tool 2 and the sheet cutter 5 separately.

[0066] <Modification> In this embodiment, the position of the rear contact member 53 of the sheet cutter 5 is adjustable, but the present invention is not limited to this example. For example, the position of the rear contact member 53 may be fixed, and the position of the front contact member 52 may be adjustable. Alternatively, the positions of both the contact members 52 and 53 may be adjustable. In this manner, the sheet cutter 5 only needs to include a position adjustment member for adjusting the position of at least one of the pair of contact members 52 and 53.

[0067] Alternatively, although it is desirable for the sheet cutting tool 5 to be provided with a position adjustment member 60 so as to be compatible with various series of building foundations, the position adjustment member 60 is not required when used for foundations of a specific width dimension.

[0068] In addition, the sheet cutter 5 according to the present embodiment can also be applied when cutting a sheet to be laid in a place other than the dirt floor 92, so long as it is a part (horizontal surface part) adjacent to a building component of a certain width. The "building component" is not limited to a building frame part such as the foundation rise part 91, but may be a support member that supports a building component (for example, a ceiling rafter). Specifically, when laying a sheet for moisture prevention on a ceiling, for example, a pair of sheet support stands are attached to the top end of the rafter, and the sheet cutter 5 is placed within the range of the area sandwiched between the pair of attached sheet support stands, and the sheet can be cut by the cutting member 54 while pulling the sheet toward the ceiling in the same procedure as above. In other words, the sheet cutter 5 can be effectively used when pulling the sheet forward from the sheet roll member 10 and cutting it in a state where both ends of the sheet roll member 10 are supported on a building component of a certain width by a pair of sheet support stands.

[0069] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0070] 1 sheet installation jig, 2 sheet support, 3, 4 support base, 5 sheet cutting tool, 10 sheet roll member, 21 facing portion, 22 receiving portion, 23 legs, 24 casters, 25, 26 hanging members, 27 rolling bodies, 30, 60 position adjustment members, 51 base portion, 52, 53 abutment members, 54 cutting member, 55 lower piece, 56 upper piece, 56a blade, 81, 82 anchor bolts, 91 foundation rise portion, 92 earthen floor portion, 93 partition foundation.

Claims

1. A cutting tool for pulling a sheet forward from a sheet roll member in a state where both ends of the sheet roll member in a roll shape are supported on a building component of a certain width by a pair of sheet support bases, and cutting the sheet, A base portion is placed within a range of an area sandwiched between the pair of sheet support bases on the building constituent portion; A pair of abutment members extending downward from both sides in the front-rear direction of the base portion and abutting or adjacent to both side surfaces of the building constituent portion; a cutting member protruding from above the front end of the base portion and having a blade extending in the front-to-rear direction.

2. The cutting member is formed in a hook shape having a lower piece and an upper piece each extending in the front-rear direction and having a front end connected to each other, The sheet cutter of claim 1 , wherein the blade is formed along a lower edge of the upper piece.

3. 3. The sheet cutter of claim 2, wherein the lower piece of the cutting member extends obliquely upward toward a connecting portion with the upper piece, and the upper piece extends obliquely downward toward the connecting portion.

4. 4. The sheet cutter according to claim 1, wherein the height of the blade of the cutting member in an attached state is approximately equal to the height of a lowermost end of the sheet roll member supported by the pair of sheet support bases.

5. The building component is a foundation rising portion provided with a plurality of anchor bolts protruding upward, The sheet cutter according to any one of claims 1 to 4, wherein the height of the blade of the cutting member in an attached state is higher than the height of an upper end of the anchor bolt.

6. The sheet cutter according to any one of claims 1 to 5, further comprising a position adjustment member for adjusting a front-rear position of at least one of the pair of contact members.

7. the position adjustment member includes a bolt that protrudes rearward from the base portion and is passed through a through hole provided in the abutment member in order to adjust the position of the rear side of the abutment member, and a nut that is screwed onto the bolt to fix the position of the abutment member, 7. The sheet cutter according to claim 6, wherein the central axis of the bolt is inclined with respect to a horizontal line so that the rear end side is slightly lower than the front end side.

8. A sheet cutter according to any one of claims 1 to 7, The pair of seat support bases are provided, A sheet installation jig, wherein the sheet support base is provided with casters that can move in the longitudinal direction of the building component.

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