JP4269584B2 - Sheet joining method and sheet nailing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sheet joining method and a sheet joining nailer for strongly joining a thin sheet of synthetic resin or the like or a thin wood board in a stacked state.
[0002]
[Prior art]
For example, a honeycomb structure is used to softly reinforce the ground during construction of roadbed materials, roadside foundation materials, and temporary roads. This honeycomb structure is constructed by joining sheets of synthetic resin in a honeycomb shape. The honeycomb structure is spread and laid on the ground surface, and earth and sand and gravel are packed in the meshes connected in a honeycomb shape. Used to reinforce the ground. The original fabric of the honeycomb structure is defined to have a width of 2.4 m and a length of 6.1 m, and is used by cutting or bonding the original fabric according to the size of the construction site.
[0003]
Conventionally, in order to join the raw materials of the honeycomb structure to each other or the end materials cut from the raw material, a large generator is used to perform electrowelding. The honeycomb sheet was welded in a state where the sheets to be welded were overlapped, a heater was applied from both sides so as to sandwich the overlapped portion, and the heater was energized and heated by the heater to become a molten state. This is done by holding and cooling the sheet portion in pressure contact.
[0004]
In general, as a method of joining the overlapped portions of the thin sheet, the two legs of the staple formed in a U-shape are driven into the overlapped portion of the sheet, and the staple leg penetrated through the sheet is inserted into the sheet. There is known a method of bending and forming along the back surface and joining them. However, with such a staple, only a holding force of about 10 kg per staple can be exhibited, and the above honeycomb structure is required. It is clear that the bonding strength does not reach the bonding strength of 200 kg, and in order to obtain the same bonding strength, about 20 staples are required and the workability is deteriorated.
[0005]
[Problems to be solved by the invention]
In the above conventional joining method by welding, it takes time to melt and join the overlapping portions of the sheets and further cool down, and it is necessary to keep the welded part during this time, and labor is required. Further, since a large current is applied to the heater for heating the sheet, the heater is consumed greatly, and it is necessary to replace the heater frequently. INDUSTRIAL APPLICABILITY The present invention implements a sheet joining method and a sheet joining method capable of joining strongly in a very short time in a superposed state with sheet-like members that require a high joining strength such as a honeycomb structure. It is an object to provide a nailing machine for sheet joining.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the sheet joining method of the present invention includes a receiving member attached to a lower part of a nose portion of a nail driver by sandwiching a joining portion of a sheet with a joining bracket in which a pair of leg pieces is formed of a metal material such as a steel plate. provided an upper member disposed opposite each other member and the lower member, and the leg of the connecting bracket which sandwiches junction of the upper Symbol sheets accommodated respectively in a recess formed respectively on the opposing surfaces of the upper member and the lower member positioning and holding Te, and wherein for joining the overlapped portion of the sheet by driving a steel nail by nail gun from the leg side of the upper side in the metal joint so as to penetrate the leg of the seat and the lower side in .
[0007]
The sheet joining nail driver according to the present invention sequentially supplies the nail loaded in the magazine to the nail injection port formed in the nose portion, and the nail supplied in the injection port is coupled to the impact mechanism. receiving member for positioning the nailing machine body so as to come up to the tip end direction of the nose portion by the driver, the joint fitting for joining the sheets together to form a pair of leg pieces by a metal material beneath the nail injection port The receiving member includes an upper member and a lower member that are arranged to face each other, and the leg pieces of the joint fitting are received and positioned on the lower surface of the upper member and the upper surface of the lower member, respectively. A recess is formed .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings. As shown in FIG. 1, the joining structure of the overlapping portion of the sheet S according to the sheet joining method of the present invention is such that the joining fitting 1 made of a metal plate-like piece bent in a U shape is narrowed at the overlapping portion of the sheet S. The steel plate nail 2 is driven so as to pass through the joint 1 and the overlapped portion of the sheet, so that the overlapped portions of the plurality of sheets S are joined by the steel plate nail 2 via the joint 1. It is made to join.
[0009]
As shown in FIG. 2, the joining bracket is formed by, for example, two leg pieces 3, 4 extending in the same direction by bending a stainless steel strip-like plate piece having a thickness of about 1 to 2 mm into a U shape at the center. Are formed so that the surfaces of these leg pieces 3 and 4 face each other, and the interval between the leg pieces 3 and 4 bent in a U-shape is the overlapping portion of the sheet S to be joined The lengths of the leg pieces 3 and 4 are arbitrarily set according to the width dimension of the sheet S to be joined. The leg pieces 3 and 4 of the joint fitting 1 are mounted on the upper and lower surfaces of the sheet S so that the longitudinal direction of the leg pieces 3 and 4 is directed to the width direction of the sheet S, and one leg of the joint fitting 1 is attached. The steel sheet nail 2 is driven from the side of the piece 3, and the shaft S of the steel sheet nail 1 penetrates the other leg piece 4 and is held by the other leg piece 4 of the joining metal fitting 1 to join the sheet S. Is done.
[0010]
FIG. 3 shows a sheet joining nail driving machine 5 according to an embodiment of the present invention. The sheet joining nail driving machine 5 is a nail loaded in a magazine 7 by an impact mechanism housed in a body 6. Is formed by a nail driver main body 9 that is driven out from a nose portion 8 that forms a nail injection port, and a receiving member 10 that is attached to the tip of the nose portion 8 of the nail driver main body 9. . In the nail driver main body 9, by operating a trigger lever 11, the impact mechanism is actuated by a driving source such as compressed air, and the nail supply mechanism 12 sequentially forms the nail injection port 13 in the nose portion 8. The nail supplied to is driven out from the nose portion 8 by a driver 14 connected to an impact mechanism.
[0011]
The receiving member 10 is composed of an upper member 15 attached to the tip of the nose portion 8 of the nailing machine body 9 and a lower member 16 disposed below so as to face the upper member 15. The member 15 and the lower member 16 are integrally joined at a rear end portion away from the nose portion 8, and both the center portion and the front end portion except for the rear end portion are opened at a predetermined interval. Have been confronted. Concave portions 17 and 18 are formed on the lower surface of the upper member 15 and the upper surface of the lower member 16 so as to accommodate and position the leg pieces 3 and 4 of the U-shaped joint fitting 1, The leg pieces 3 and 4 of the joint fitting 1 are accommodated in the recesses 17 and 18, and the joint fitting 1 is held in the receiving member 10.
[0012]
As shown in FIGS. 4 and 5, the front end of the upper member 15 is formed with an opening 19 that is aligned with the nail injection port 13 of the nose portion 8 and is open to the front other end edge side of the upper member. The head of the steel plate nail that has been driven into the joint metal fitting can be moved forward. Further, the lower member 16 is formed with a receiving surface 16a for supporting the lower surface of the joint fitting 1 accommodated in the recess 18 at a position facing the nail injection port 13 against the driving of the nail. An opening 20 into which the shaft portion 22 of the steel plate nail 2 is fitted is formed concentrically with the opening 19 of the upper member 15, and the opening 20 opens toward the front edge of the lower member 16. Thus, the shaft portion 22 of the steel plate nail 1 penetrating the joint fitting 1 can be moved forward. On the lower surface side of the lower member 16, a shaft through which the steel plate nail 2 penetrates so that the tip of the steel plate nail 2 that penetrates the lower leg piece 4 of the joint fitting 1 does not protrude downward from the lower end of the lower member 16. A rib 21 higher than the length of the portion 22 is formed.
[0013]
The steel sheet nail 2 used for joining the sheets is a steel sheet nail in which a spiral unevenness or a knurled unevenness is formed on the shaft portion 22, and has a sharp tip 22 for penetrating the steel sheet. After the straight portion 23 has formed an opening in the steel plate and penetrated, the uneven portion 24 is fixed to the steel plate by engaging with the edge of the opening formed in the steel plate.
[0014]
Hereinafter, the operating state of the sheet joining nailer 5 will be described. In the recesses 17 and 18 formed in the receiving member 10 of the sheet joining nailer 5, the joining fitting 1 is mounted so that the U-shaped bent part faces the rear side, and as shown in FIG. Superposition of the sheets S so that the overlapping joints of the sheets S to be joined to the sheet joining nailer 5 are accommodated between the two leg pieces 3 and 4 of the joining bracket 1 held by the receiving member 10. Attach to the part. In this state, as shown in FIG. 7, the joined portion of the stacked sheets S is sandwiched between the leg pieces 3, 4 of the fitting 1, and the lower leg piece 4 is the lower member 16 of the receiving member 10. It arrange | positions so that it may be supported by the receiving surface 16a.
[0015]
In this state, when the trigger lever 11 is operated to drive the nail driver main body 9, the driver 14 is driven by the impact mechanism as shown in FIGS. 13, the steel sheet nail 1 is protruded from the opening 20 of the lower member 16 of the receiving member 10 through the upper leg piece 3 of the joining metal fitting 1 and the sheet S and the lower leg piece 4. The nail shaft 22 is fixed to the lower leg piece 4. Since the lower leg piece 4 is supported by the receiving surface 16 a of the lower member 16, the steel plate nail 2 penetrates the lower leg piece 4 of the joint fitting 2 and penetrates downward from the opening of the lower member 16. . The head of the steel plate nail 2 driven by the driver 14 presses the upper leg piece 3 downward, and sandwiches the superposed sheet S between the lower leg piece 4 and the upper leg piece 3. Sheet S is joined.
[0016]
When the trigger lever 11 is released, the driver 14 that has driven the nail returns to the upper side. Therefore, by moving the sheet bonding nail driving machine 5 to the rear side, the bonding applied to the sheet S by the first driving of the nail is performed. Since the metal fitting 1 and the sheet S do not move together, the joining metal fitting 1 is pulled out from the recesses 17 and 18 of the receiving member 10. The sheet joining nail driving machine 5 is moved until the nail injection port 13 of the nose portion 8 reaches the second fastening position at the substantially central part of the joining metal fitting 1, and the sheet joining nail driving machine 5 is again moved at this position. Drive and do nailing. Similarly, after nailing is performed by moving the sheet joining nailer 5 to the third fastening position close to the U-shaped bent portion of the joining bracket 1, the receiving member 10 of the sheet joining nailer 5 is used. The sheet S is completely joined by pulling out all of the joining hardware 1.
[0017]
In the operation of the above embodiment, nail fastening is performed at three locations in the longitudinal direction of the joint fitting 1, but the number of nails driven in can be arbitrarily set according to the joint strength of the sheet S. Moreover, it is necessary to change arbitrarily the dimension of the joining metal fitting 1 according to the thickness of the sheet | seat S to be joined, and the dimension of the width | variety, The several receiving member 10 from which the dimension differs for every joining metal fitting 1 from which a dimension differs. May be prepared so that the joining metal fitting 1 can be attached to and detached from the nose portion 8 of the nailing machine main body 9, and the receiving member 10 suitable for the joining metal fitting 1 to be used may be replaced and attached.
[0018]
FIG. 11 shows another embodiment of the joint metal fitting of the present invention. In this embodiment, the joint metal fitting 1 is formed of two leg pieces 3 and 4 made of metal plate pieces such as stainless steel independently. The two leg pieces 3 and 4 form a U-shaped joint fitting 1. The bent portion 3a in an end portion which is bent in a direction opposite to each other of each leg piece 3 and 4, 4a are formed, the bent portion 3a, the surface of the leg 3 and 4 by polymerizing 4a together opposing The steel sheet nail 2 is driven from one leg piece 3 side, and the shaft part of the steel sheet nail 1 penetrates the other leg piece 4 The shaft S 22 of the steel plate nail 2 is held by the other leg piece 4 so that the sheet S is joined. According to this embodiment, the distance between the leg pieces 3 and 4 can be arbitrarily changed according to the thickness of the overlapping portion of the sheet S, and even if there is a slight difference in the thickness of the sheet S to be joined. Therefore, it is not necessary to prepare various types of joining fittings 1 according to the thickness of the sheet S.
[0019]
【The invention's effect】
In the sheet bonding method of the present invention as described above, the joint portion of the sheet is nipped by the contact alloy tool, since the sheet can be fastened by implanting through the connecting bracket to the steel plate nail with the nail driver, very The sheet can be fastened in a short time, and the work time can be shortened and the workability can be improved as compared with the conventional heat welding work. In addition, since the joining portion of the sheet is clamped by the joining bracket and fixed by the holding force of the steel sheet nail, the joining bracket exhibits the function of a seat plate that sandwiches the overlapping portion of the sheet from both sides. It is possible to increase the bonding strength.
[0020]
Furthermore, according to the sheet joining nail driver of the present invention, the receiving member is attached to the tip of the nose portion of the nailing machine body, and the joining metal fitting in which the leg pieces arranged on both sides of the sheet to be joined are formed, Since it is accommodated in the recess formed in the receiving member and is supported by the lower surface of the joint fitting by the receiving member, it is not necessary to support the lower surface side of the receiving member when nailing, and nailing in the air The sheet can be joined at an arbitrary location and posture even when the joining portion of the sheet is arranged vertically.
[Brief description of the drawings]
FIG. 1 is a perspective view of a state in which sheets are joined by a joining metal fitting used in the sheet joining method of the present invention.
FIG. 2 is a perspective view of the joining metal fitting of FIG.
FIG. 3 is a side view of a sheet joining nailer according to the present invention.
4 is a longitudinal front view of a receiving member of the same sheet joining nail driver as in FIG. 3, (a) a state before the steel plate nail is driven, and (b) a state where the steel plate nail is driven.
FIG. 5 is a bottom view of a receiving member of the same sheet joining nailer as FIG. 3;
FIG. 6 is a perspective view showing an example of a sheet joining operation in the sheet joining nailer of the present invention.
FIG. 7 shows an operation state of sheet joining, and shows a state in which a joining fitting is arranged on a receiving member and arranged at a joining position of the sheet.
8 is a vertical side view similar to FIG. 7 showing an operating state in which the first steel plate nail is driven. FIG.
FIG. 9 is a vertical side view similar to FIG. 7, showing an operating state in which a steel plate nail is driven into the substantially central portion of the joint fitting.
FIG. 10 is the same vertical side view as FIG. 7 showing the operating state in which a steel plate nail is driven into the end of the joint fitting.
FIG. 11 is a perspective view showing another embodiment of a joining metal fitting used in the sheet joining method of the present invention.

Claims (2)

An upper member and a lower member, which are arranged to face each other on a receiving member attached to a lower part of a nose part of a nailing machine, are sandwiched between joint parts formed by a pair of leg pieces made of a metal material such as a steel plate. provided, and the leg of the connecting bracket which sandwiches junction of the upper Symbol sheet and held positioned respectively housed in a recess formed respectively on the opposing surfaces of the upper member and the lower member,
Sheet joining method characterized by joining the overlapping portion of the sheet by implanting the nailing machine steel nails from the leg side of the upper side in the metal joint so as to penetrate the leg of the seat and the lower side in .   The nail loaded in the magazine is sequentially supplied to the nail injection port formed in the nose portion, and the nail supplied in the injection port is driven out toward the tip of the nose portion by a driver coupled to the impact mechanism. The hitting machine main body and a receiving member for positioning a joint fitting for forming a pair of leg pieces with a metal material and for joining the sheet below the nail injection port, the receiving members are arranged opposite to each other. And a concave portion for accommodating and positioning the leg pieces of the joint fitting on the lower surface of the upper member and the upper surface of the lower member, respectively. Nailer.

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