JP3051677B2 - Welding machine for film material bonding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film material welding machine, and more particularly to a film material welding machine capable of efficiently welding an end portion of a film material used as a roof material of a membrane structure building or the like.

[0002]

2. Description of the Related Art In a large-scale membrane structure building, a membrane structure roof is constructed so as to cover a roof space constituted by a frame structure such as a steel frame. The membrane material used as the roof material that composes the membrane structure roof is a fiber material coated with a resin material, which is cut into a predetermined shape and joined at a predetermined position to form the entire shape of the membrane structure roof It is supposed to. This joining is generally performed by welding. FIG. 5 shows a film edge fixing section 100 of a stretched roof material.
FIG. 2 is a perspective view showing an example of a conventional welding machine 110 used for welding work. An end portion 101a of the roofing material 101 is fixed to a film end fixing portion 100 provided on a flange 103 (see FIG. 6) of the roof steel frame 102 by a bolt (not shown). Recently, for design reasons, film edge fixing part 1
In many cases, 00 is covered with a flap cloth 104 for rain. The flap cloth 104 is made of the same material as the film material constituting the roofing material 101, has a long and narrow strip shape along the roof steel frame 102, and has both ends 104 a along the longitudinal direction thereof welded to the surface of the roofing material 101. Has become. The flap cloth 104 and the roof material are generally surface-bonded via a welding thermoplastic resin film such as an FEP film. When the FEP film is placed in a high temperature state while being sandwiched between the flap cloth 104 and the roofing material 101, the FEP film is melted, and after slow cooling, the film materials are securely bonded to each other.

Conventionally, a handy type welding machine 110 has been used for welding a film material. As shown in FIG. 5, this type of welding machine 110 has a heating plate portion 111 having a bottom surface of about 40 cm in length and 5 cm in width, a control portion 112 for adjusting the temperature of the heating plate portion 111, and a welding machine as a whole. And a supportable handle 113. A heater (not shown) is built in the hot plate portion 111, and the bottom surface is heated to a predetermined high temperature state when the heater is turned on. To weld the ends of the film material, the heated bottom surface is pressed against the end portion 104a of the film material to melt the FEP film sandwiched between the film materials so as to perform welding.

In this welding operation, as shown in FIG.
The worker M joins the roof material 101 by pressing the end of the flap cloth 104 with the heated welding machine 110, and sequentially works while moving with the welding machine 110. .

[0005]

Since the welding operation is performed one by one by human power as described above, there is a problem that the extension of the work per day can be achieved only tens of meters.
In addition, since the temperature of the hot plate of the welding machine needs to be constantly maintained at a predetermined temperature or higher, the worker must always carry the welding machine in a heated state and perform welding work. Work burden was heavy.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art and to provide a welding machine for bonding film materials.

[0007]

In order to achieve the above-mentioned object, the present invention is provided so as to straddle an auxiliary film material covering a film edge fixing portion of a roofing material, and is provided at a substantially central position in the width direction of the auxiliary film material. A frame main body that can be bent at a predetermined angle at the center in the width direction by operation of the frame bending mechanism; and a lower end supported at a position sandwiching the frame bending mechanism of the frame main body. Has a hot plate capable of welding both ends in the width direction of the auxiliary film material to the surface of the roof material, and moves along the guide rail of the frame body to move the hot plate to an end of the auxiliary film material. A movable hot plate supporting portion, wherein the heated hot plates are simultaneously pressed against both ends of the auxiliary film material, and the auxiliary film material is welded and joined to the roof material surface. It is characterized by having to go That.

[0008] It is preferable that the hot plate supporting portion includes an elevating mechanism for raising and lowering the hot plate so as to be separated from the surface of the roofing material by a predetermined distance, and a lock mechanism capable of holding the same position.

When the hot plate is placed at the surface of the roofing material, the hot plate includes a swing margin adjusting portion supported by the hot plate supporting portion so as to swing within a predetermined range and adapt to the surface of the roofing material. Preferably, it is provided.

[0010] It is preferable that the frame bending mechanism has a bidirectional feed screw for bending the frame body.

Preferably, the frame body has a feed screw for slidingly moving the hot plate support.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a welding machine for bonding a film material according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a film material bonding welding machine (hereinafter referred to as a welding machine 1).
FIG. 2 is a perspective view showing an entire configuration of the first embodiment. The welding machine 1 is composed of a frame main body 2 having a symmetrical structure in which the left and right sides have the same shape with respect to the illustrated center line C. For this reason, the flap cloth 4 as an auxiliary film material extending along the film edge fixing portion 3
Can be welded at a time on both sides 4a in the width direction. Hereinafter, the configuration of the symmetrical frame body 2 will be described by taking one side portion as an example.

The frame body 2 on one side includes a support frame 10
And a hot plate support 20 movably supported by the support frame 10. The frame main body 2 is connected by a frame bending mechanism 30 (the configuration will be described later) provided at the center position, and the overall shape of the connected state is downward as shown in FIG. Has an open U-shape. For this reason, the welding machine 1 can be installed on the roofing material 5 so as to straddle the film end fixing section 3.

The support frame 10 is a guide rail 11 composed of two pipes arranged in parallel at a predetermined interval.
A beam 12A supporting both ends of the guide rail 11,
12B, a support leg 13 attached downward from the beam 12B, and one sled 14 attached so as to connect the lower ends of the two support legs 13. Further, a feed screw 15 is wound around the intermediate position between the two guide rails 11 so as to be rotatably supported between the beams 12A and 12B. An operation disk 16 is fixed to the outside of the beam 12B of the feed screw 15.

The hot plate supporting portion 20 includes a hot plate slide 21 and
A control unit support plate 22 located above the hot plate slide 21, a suspending rod 23 attached to the hot plate slide 21 and capable of ascending and descending in the vertical direction, and a suspending rod 23 slid upward in the arrow Z direction. , A hot plate swing margin adjustment unit 50 incorporated at the lower end of the suspension rod 23, and a hot plate 60 fixed to the hot plate swing margin adjustment unit 50.

The hot plate slide 21 is supported by two guide rails 11 and one feed screw 15. At this time, a female screw portion 21a screwed with the feed screw 15 is formed on the hot plate slide body 21, and the feed screw 1 is attached to the female screw portion 21a.
5 is screwed. The internal thread dimensions are set to such an extent that the feed screw 15 can be smoothly rotated. Further, a through hole 21b through which the guide rail 11 penetrates is provided at both ends of the hot plate slide 21, and the guide rail 11 is loosely fitted into the through hole 21b. Therefore, the hot plate slide 21 is slidably supported on the guide rail 11 by rotating the operation disk 16 forward or backward.
Can slide in the direction of the double arrow A with the rotation of the feed screw 15. In the present embodiment, by rotating the operation disks 16 provided on both sides of the welding machine 1 by a predetermined amount, the distance L between the two hot plate support portions 20 is set to about 2
It can be varied between 00 mm and 800 mm.

A control box 25 indicated by a virtual line is mounted on the control section support plate 22. The hanging rod 23 can slide through the through hole 21 b provided in the hot plate slide 21, and the bottom surface 61 of the hot plate 60
Can be manually pulled up to a position about 50 mm away from the film material surface, and the suspension rod 23 can be held by the lock mechanism 40 at the pulled up position. The locking mechanism 40 locks a not-shown locking piece to a locked portion (not shown) provided on a part of the hanging rod 23 by a spring bias in a state where the hanging rod 23 is slid to a predetermined position. And a function of locking the hanging rod 23 from falling. This locked state can be easily released by operating the lever 41. The hot plate swing margin adjusting unit 50 has a function of setting a play so that the hot plate 60 can swing within a predetermined range so that the tilt of the hot plate 60 can be adjusted according to the tilt of the film material. .

The hot plate rocking margin adjusting section 50 includes the suspension rod 2.
A support plate 51 fixed to the lower end of the support plate 3 and having arms extended on both sides; two adjustment screws 52 screwed to both ends of the support plate 51; and a rotating plate 53 to which the lower end of the adjustment screw 52 can contact. Consists of Of these, the rotating plate 53
Is attached to the upper surface of the hot plate 60 supported by the pin support 54 at the lower end of the suspension rod 23, and is located within a predetermined range with respect to the pin support 54 according to the clearance provided between the lower end of the adjusting screw 52 and the adjustment screw 52. The swing amount can be set. Thereby, as shown in the right half view of FIG. 2, a play at a slight angle can be provided in the hot plate 60, and the bottom surface of the hot plate 60 and the film material can be adhered to each other in the welding operation. Since the hot plate swing margin adjusting unit 50 in the left half diagram tightens the adjusting screw 52 to press the rotating plate 53, the hot plate 60 is not swinging.

The hot plate 60 has the same structure as the hot plate 60 of the conventional welding machine. The temperature is controlled by the control box 25 and can be maintained at a predetermined temperature.

The frame bending mechanism 30 is attached to the beam 12A of the support frame 10, as shown in FIGS. A hinge 31 is attached to the lower surface of the beam 12A that supports the center side of the guide rail 11. On the other hand, on the upper surface of the beam 12A, a nut support 33 for swingably supporting the nut 32 is fixed at a central position in the longitudinal direction of the beam 12. The outer shape of the nut 32 has a substantially rectangular parallelepiped shape, and the side surface is supported by a nut support 33 with bolts 34. At this time, the nut 32 is supported so as to be rotatable around the central axis of the bolt 34. Further, a bidirectional feed screw 36 which is threaded symmetrically in both left and right directions with the operation disk 35 as a center boundary is screwed to the nut 32.

When the operation disk 35 is rotated in a predetermined direction,
The distance between the nuts 32 of the bidirectional feed screw 36 can be adjusted. As a result, the left and right support frames 10 bend at equal bending angles with the frame bending mechanism 30 as a boundary. In this manner, both ends of the flap cloth 4 can be welded simultaneously while being bent at a predetermined angle α with the horizontal as shown in FIGS.

The roof steel frame 6 is generally provided with a predetermined gradient from the ridge to the eave, and the flap cloth 4 needs to be welded to the roofing material 5 along this gradient. Therefore, in consideration of the gradient provided along the longitudinal direction of the flap cloth 4, the entire welding machine 1 is, as shown in FIG.
And flap cloths 4 are welded by being suspended from the ridge side. In the present embodiment, the operation of the suspension wire 37 is performed by an operator, but a traveling mechanism and a suspension wire winding mechanism can be incorporated in the welding machine 1 as necessary.

FIGS. 3 and 4 are construction state diagrams showing the construction state of the film edge fixing section 3 for fixing the edge of the roofing material 5 as the film material. The flap cloth 4 is an upper flange 6 of a roof steel frame 6.
The film edge fixing unit 3 provided at the position a is covered. The flap cloth 4 is an elongated strip-shaped film material laid from the roof ridge to the eaves. The same material as the roof material 5 is used as the film material. Normal roofing material 5
Is stretched with a predetermined tension, but since the membrane material is in a suspended state, the roof steel frame 6 is the highest as shown in FIG. For this reason, in order to cover the film end fixing portion 3 with the flap cloth 4 and weld it to the surface of the roof material 5, it is necessary to use the frame bending mechanism 30 of the welding machine 1.

In the present embodiment, the horizontal and the guide rail 1
1 can be set up to a maximum of about 35 °. This set angle can be arbitrarily changed by changing the length of the screw portion of the bidirectional feed screw 36. Further, the hot plate supporting portion 20 is moved to a predetermined position so that the hot plate 60 is located at the welding positions at both ends of the flap cloth 4. At this time, the operation of pressing the hot plate 60 against the end of the flap cloth 4 is performed. At this time, the sled 14 at the lower end of the support leg 13 is floated by about 10 mm from the surface of the roofing material 5.
By pressing the bottom surface of the hot plate 60 against the welded portion of the flap cloth 4 in this state, the end of the flap cloth 4 and the roof material 5 can be welded. This welding work is performed on the frame body 2
Can be performed at the same time by the two hot plates 60 arranged side by side. At this time, the adjusting screw 52 of the hot plate swing margin adjusting unit 50 is used.
Can be adjusted so that the bottom surface of the hot plate 60 conforms to the surface of the flap cloth 4. When the hot plate 60 is set at the position shown in FIG. 3, the weight of the welding machine 1 is added. Therefore, the end of the flap cloth 4 can be securely welded to the roofing material 5 only by lightly touching it.

FIG. 4 is an explanatory view showing a state in which the hot plate 60 is moved from the state shown in FIG. 3 to the next welding position. As shown in FIG. 4, by lifting the handle at the upper end of the control box 25 upward,
Is pulled up, and the entire hot plate 60 is
Lifted by 0 mm. At this time, the hot plate 60 is held in a state of being lifted by about 50 mm by the lock mechanism 40 incorporated in the hanging rod 23. At this time, support leg 1
The third sled 14 is pressed against the roofing material 5, and the entire welding machine 1 is supported on the roofing material 5 by the sled 14.
Then, the suspending wire 37 (FIG. 1) is extended, and the entire welding machine 1 is moved by the sled 14 on the roofing material 5 by a predetermined length to the next welding point. After moving to the predetermined position, the lock mechanism 40 is released, the two hot plates 60 are lowered, and the next welding operation is performed. By repeating the above operation, a continuous welding operation becomes possible.

The use of the FEP film for welding the flap cloth 4 and the roofing material 5 is the same as the conventional welding operation. Further, since both sides of the flap cloth 4 can be welded at the same time in the present welding machine 1, it is preferable that the flap cloth 4 is stretched by applying a predetermined tension prior to the welding operation. For this reason, it is preferable that the flap cloth 4 is temporarily fixed to the roofing material 5 in a state where a predetermined tension is applied in advance by spot welding or the like.

In the above description, the feed screw 15
Although the description has been given with reference to the embodiment in which is incorporated, it goes without saying that a known mechanism such as a link can be applied to this drive mechanism. Also, various mechanisms can be applied within a range of design items as long as the mechanism that locks the suspension rod 23 at a predetermined position can perform the same function. In addition, illustration of various wirings is omitted in the accompanying drawings.
It goes without saying that wiring required to connect the hot plate 60, the control box 25, and the power supply (not shown) is provided in a predetermined connection state in terms of design.

[0028]

As is apparent from the above description, according to the present invention, it is possible to efficiently weld the ends of the film material as a roofing material, and to reduce the work load on the worker. It has the effect of being able to.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the overall configuration of a welding machine for bonding film materials according to the present invention.

FIG. 2 is a front view showing a partial cross section of the film material bonding welding machine shown in FIG.

FIG. 3 is a state explanatory view showing a state of a flap cloth welding operation by the film material bonding welding machine shown in FIG. 1 (at the time of welding).

FIG. 4 is a state explanatory view showing a state of a flap cloth welding operation by the film material bonding welding machine shown in FIG. 1 (during movement).

FIG. 5 is a perspective view showing an example of a conventional welding machine.

FIG. 6 is a state explanatory view showing a state of a welding operation by the welding machine shown in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Welding machine 2 Frame main body 3 Film end fixing part 4 Flap cloth 5 Roof material 10 Support frame 11 Guide rail 15 Feed screw 20 Hot plate support part 23 Suspension rod 30 Frame bending mechanism 36 Bidirectional feed screw 40 Upper lock mechanism 50 Hot plate shaking Moving adjustment unit 60 hot plate

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04G 21/16 B29C 65/02 E04H 15/54

Claims (5)

(57) [Claims] 1. A frame bending mechanism is provided so as to straddle an auxiliary film material covering a film end fixing portion of a roofing material, and has a frame bending mechanism at a substantially central position in a width direction of the auxiliary film material. A frame body whose central position in the width direction can be bent at a predetermined angle; and a frame body supported at positions sandwiching the frame bending mechanism. A hot plate that can be welded to a surface thereof, and two sets of hot plate supporting portions that can move along the guide rails of the frame body to move the hot plate to an end of the auxiliary film material; The welding machine for film material bonding, wherein the hot plates in a heated state are simultaneously pressed against both ends of the auxiliary film material to weld and bond the auxiliary film material to the roof material surface. . 2. The heating plate supporting portion includes an elevating mechanism for elevating and lowering the heating plate so as to be separated from the surface of the roofing material by a predetermined distance, and a lock mechanism capable of holding the same position. Item 6. A welding machine for bonding a film material according to Item 1. 3. A swing margin adjustment for supporting the hot plate on the hot plate supporting portion so that the hot plate swings within a predetermined range when the hot plate is placed at the surface position of the roof material and is adapted to the roof material surface. The welding machine according to claim 1, further comprising a portion. 4. The welding machine according to claim 1, wherein said frame bending mechanism has a bidirectional feed screw for bending said frame body. 5. The welding machine according to claim 1, wherein said frame body has a feed screw for slidingly moving said hot plate supporting portion.