JP2566116B2 - Membrane edge closed structure and membrane welding machine used for its formation - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a membrane structure such as a single membrane type air membrane structure or a frame membrane structure, and a membrane welding machine used for forming the structure.

[0002]

2. Description of the Related Art Conventionally, in a membrane structure, for example, a single membrane type air membrane structure (hereinafter referred to as an air dome) or a skeleton membrane structure, a membrane of a membrane member locked to the structural body. Closing the end is done. Its purpose is generally to prevent rain and wind from entering the inside of the membrane structure from the membrane edge part, but in the air dome that maintains the structure by the air pressure difference between the inside and outside of the membrane structure, It is important to increase the airtightness of the membrane structure and maintain the pressure difference.

FIG. 10 is a cross-sectional view schematically showing a conventional membrane edge closing structure in an air dome. In the figure,
Reference numeral 10 indicates a strand rope that serves as a structural body of the air dome, and 12 indicates a film-shaped member that is locked to the strand rope 10. A roped edge 14 and eyelets 16 are provided on the film end portion of the film member 12. Roped edge 14
Is a bag-shaped portion 14 formed by folding back the film-shaped member 12.
a and a rope 14b inserted through the bag-shaped portion 14a.

When locking the membrane member 12 to the strand rope 10, the two membrane members 12 are arranged in parallel with the strand rope 10 interposed therebetween, and the two membrane members 1 are
The locking ropes 18 are inserted through the eyelets 2 of 2, respectively. Then, the film rope 12 is locked by hanging the locking rope 18 on the strand rope 10.

The membrane member 12 is provided with a closing member 20 and a locking member 22. One side of the locking member 22 is joined to the film member 12, and the roped edge 14 and the eyelet 26 are provided on the other side of the locking member 22. The roped edge 14 includes a bag-shaped portion 14a formed by folding back the locking member 22 and a rope 14b inserted into the bag-shaped portion 14a. Then, one side of the closing member 20 is joined to the film member 12 between the locking member 22 and the roped edge 14.

In closing the space between the membrane end portions of the two membrane members 12 locked to the strand rope 10, the other sides of the closing members 20 provided in these membrane members 12 are overlapped with each other. Also wrap it up so that it overlaps. The eyelet 26 of the locking member 22 provided on the film-shaped member 12 is
Then, the presser rope 28 is inserted, the presser rope 28 is tensioned, and the closing member 20 is pressed by the presser rope 28.

[0007]

However, in the above-mentioned conventional membrane end closing structure, since the locking member 22 and the pressing rope 28 are required in addition to the closing member 20, the structure becomes complicated and the cost becomes high. Further, since the closing member 20 is pressed by the pressing rope 28 after the closing member 20 is rolled up, the closing operation of the film end portion is difficult.

Further, in the above-mentioned conventional membrane end closed structure,
Since the closing member 20 is rolled up and then is pressed down by the pressing rope 28, the airtightness of the air dome cannot be sufficiently enhanced, and rain can be prevented from effectively entering the inside of the air dome. There wasn't.

The first invention has been made in view of the above-mentioned conventional problems, and its main purpose is to provide a membrane-end closed structure having a simple structure and more easily closing the membrane end. To provide.

A second object of the present invention is a membrane welding machine suitable for use in forming the membrane end closed structure of the first invention, which is capable of easily performing the closing work of the membrane end portion. It is to provide a method of forming.

[0011]

In order to achieve the above-mentioned object, the membrane end closed structure of the first invention is a structure precursor of a membrane structure and a structure precursor arranged in parallel with the structure precursor interposed therebetween. First and second film-like members to be locked, a first closing member provided on the first film-like member by extending in a strip shape along the structural body, and along the structural body And a second closing member provided on the second film-shaped member by extending in a strip shape and closing the space between the first and second film-shaped members with the first and second closing members. In a membrane-end closed structure of a membrane structure formed by joining, one side of the first closing member is joined to the first membrane member, and the other side of the first closing member is extended. , Joining one side of the second closing member to the second film-like member and extending the other side of the second closing member to the same side as the other side of the first closing member. ,
The other side of the first and second closing members is joined to form a bag-shaped body, and the joining of the first and second closing members is the inner surface of the bag-shaped body when the bag-shaped body is formed. It is characterized in that the parts on the side of are joined to each other.

The membrane welding machine of the second invention is suitable for use in the formation of the membrane end closed structure of the first invention, particularly when the other sides of the first and second closing members are joined by heat welding. A film welding machine, which has first and second pressing surfaces facing each other, and applies a pressing force between the first and second pressing surfaces in a first state and a pressing force load. It is characterized by comprising a freely-formable hand-held vice in the second state to be released, and heating means provided on the first and second pressing surfaces, respectively.

[0013]

According to the first aspect of the present invention, one side of the first closing member is joined to the first film-like member and the other side of the first closing member is extended to form the second closing member. One side of the forming member is joined to the second film-like member and the other side of the second closing member extends to the same side as the other side of the first closing member. And since the other side of the first and second closing members is joined,
The first and second closing members can form a bag-like body that covers the film end portions of the first and second film-shaped members.

Further, the first and second closing members are joined by joining the portions on the inner surface side of the bag-shaped body when the bag-shaped body is formed. For this reason, the worker remains on the side where the other side of the first and second closing members extends, for example, on the outside or inside of the membrane structure,
The other side of these first and second closing members can be joined.

Further, according to the second invention, heating means are provided on the first and second pressing surfaces of the handheld vice. Therefore, the other side of the first and second closing members can be pressed and sandwiched between these heating means by operating the handheld hand vice. The side can be heated and pressure bonded. Further, since the pressing and pinching can be released by operating the handheld vise, the heating means is moved together with the handheld vise, and the movement is sequentially performed by thermocompression bonding the other side of the first and second closing members. it can.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. It should be noted that the drawings are merely schematic representations so that the invention can be understood, and therefore the invention is not limited to the illustrated examples.

FIG. 1 and FIG. 2 are a sectional view and a plan view schematically showing the constitution of the membrane end closed structure of the embodiment of the first invention.
In FIG. 2, the main structure of this embodiment is partially cut away, and in FIG. 1, a cross section taken along line II of FIG. 2 is shown.

The membrane end closed structure shown in these drawings is a structure precursor 30 of a membrane structure and first and second membranes arranged in parallel with the structure precursor 30 sandwiched therebetween and locked to the structure precursor 30. Member 32
And 34, and a first closing member 36 provided on the first film-shaped member 32 so as to extend in a strip shape along the structural body 30.
The second closing member 38 is provided on the second film-shaped member 34 so as to extend in a strip shape along the structural body 30.

One side 36 of the first closing member 36
a is joined to the first film member 32, and the other side 36b of the first closing member 36 is extended. Also, one side 38a of the second closing member 38 is joined to the second film-like member 34, and the other side 38b of the second closing member 38 is connected to the other side 36b of the first closing member 36. And extend it to the same side.

The first and second closing members 36 and 3
The other side 36b and 38b of 8 are joined to form a bag-like body 40 by these closing members 36 and 38, and the bag-like body 40 is provided between the first and second film-like members 32 and 34. Close. At this time, the joining of the other sides 36b and 38b of the first and second closing members 36 and 38 is performed by the bag-like body 40.
When the above is configured, the portions on the side 40a which is the inner surface of the bag-shaped body 40 are joined to each other.

In this embodiment, the structural body 30 is a strand rope which serves as a structural body of the air dome, and the structural body 30 is tensioned and stretched between beams (not shown).

The first and second membrane members 32 and 34 are
A glass fiber cloth whose surface is coated with ethylene tetrafluoride resin, and roped edges 42 and 44 are provided at the film end portions of these members 32 and 34.

The roped edge 42 comprises a bag-shaped portion 42a and a rope 42b inserted through the bag-shaped portion 42a.
The bag-shaped portion 42a is formed by folding back the film end of the first film-shaped member 32 and joining the folded-back end portion 32a and the folded-back base portion 32b. Here, the one end 36a of the first closing member 36 is sandwiched between the folded-back end 32a and the folded-back base 32b, and the end 32 is formed.
a, the base portion 32b, and the one side 36a are integrally joined, so that the one side 36a of the first closing member 36 is joined between the folded end portion 32a and the folded base portion 32b. This joining portion is shown by a wavy line in FIG. 1 and a dotted line in FIG. The joining method is heat welding,
Although any suitable method such as sewing, gluing, or the like can be used, the joining is performed by heat welding here. Heat welding is suitable as a simple joining method for increasing the airtightness of the air dome. In the case of stitching, the stitched portion may be sealed airtightly and / or watertightly.

Further, through holes for hooking the locking ropes 46 are provided in the end portions 32a, the base portion 32b and the one side 36a, and eyelets 48 are provided in the through holes. The locking rope 46 is hooked to the first film-shaped member 32 via the eyelet 48 and is hooked to the structural body 30 to lock the first film-shaped member 32 to the structural body 30.

Similarly, the roped edge 44 has a bag-like portion 44.
a and a rope 44b inserted through the bag-shaped portion 44a. The bag-shaped portion 44a is formed by folding back the film end of the second film-shaped member 34 and joining the folded-back end portion 34a and the folded-back base portion 34b. Here, one end 38a of the second closing member 38 is sandwiched between the folded-back end portion 34a and the folded-back base portion 34b, and the end portion 3 is formed.
4a, the base portion 34b and the one side 38a are integrally joined, so that one side 38a of the second closing member 38 is joined between the folding end portion 34a and the folding base portion 34b. As the joining method, heat welding, sewing, adhesion, or any other suitable method can be used. Here, the joining is performed by heat welding. This joining portion is shown by a wavy line in FIG. 1 and a dotted line in FIG.

A through hole for hooking the locking rope 50 is provided in the end portion 34a, the base portion 34b and the one side 38a, and an eyelet 52 is provided in this through hole. The second rope member 34 is locked to the structural body 30 by hooking the locking rope 50 on the second film member 34 via the eyelet 52 and on the structural body 30.

Further, the first and second closing members 36 and 3
Reference numeral 8 is a glass fiber cloth having a surface coated with a tetrafluoroethylene resin, and the other side 36b and 38b of the closing members 36 and 38 is connected to the first and second film-like members 3 and 3, respectively.
2 and 34 to the outside of the air dome. Folded end portions 32a and 34 of the film members 32 and 34
It is advisable to fold a into the same side as the side from which the other side 36b and 38b of these closing members 36 and 38 extends.

By joining the other sides 36b and 38b of the closing members 36 and 38, the bag-like body 40 is joined.
Is configured. As the joining method, heat welding, sewing, adhesion, or any other suitable method can be used. Here, the joining is performed by heat welding. This joint is shown in FIG. 1 and FIG.
Is indicated by a wavy line.

The other side 36b and the other side 38b are joined by joining the portions on the side 40a which are the inner surface of the bag-shaped body 40 when the bag-shaped body 40 is constructed. As a result, the joining work can be performed while the other sides 36b and 38b are both outside the bag-like body 40, and thus the joining work is facilitated. For comparison, the other side 36b of the portion of the bag-like body 40 which is the inner surface 40a and the bag-like body 4
When joining the other side 38b of the part which becomes the outer surface 40b of 0, the other side 36b of the part which becomes the outer surface 40b of the bag-shaped body 40 and the side which becomes the inner surface 40a of the bag-shaped body 40 Consider B when joining the other side 38b of the part. In case A, the joining work needs to be performed with the other side 38b inside the bag-like body 40, and in case B, the joining work with the other side 36b inside the bag-like body 40. In both cases A and B, the joining work becomes difficult because it is necessary to perform the joining work.

In this embodiment, one side 36a of the first closing member 36 is joined to the first film-shaped member 32, and one side 38a of the second closing member 38 is connected to the second film-shaped member. Since joining with the member 32 and joining with the other side 36b of the first closing member 36 and the other side 38b of the second closing member 38 are performed by heat welding, these members 32, 34, 36, and At least the surface layers of the joint portions 38 are made of a material suitable for heat welding, for example, heat or a thermosetting resin that produces an adhesive force by applying pressure thereto.
When a joining method other than heat welding is used, the members 32, 34, 3 made of any suitable material suitable for the joining method.
6 and 38 can be used.

Also in this embodiment, the other sides 36b and 38b of the first and second closure members 36 and 38 extend from the first and second membrane members 32 and 34 to the outside of the air dome. However, it may be extended from the first and second film-shaped members 32 and 34 to the inside of the air dome. However, when extended to the outside of the air dome, the operator stands on the first and second film-shaped members 32 and 34 on the outside of the air dome to the other side of the first and second closing members. Workability is good because the joining work of 36b and 38b can be performed.

Further, in this embodiment, the first closing member 36
The one side 36a is joined between the folded end 32a and the folded base 32b, but the joining portion on the one side 36a can be any suitable portion of the first film-shaped member 32. In this embodiment, It is not limited to those mentioned. Similarly,
The joint portion on one side 38a of the second closing member 38 is not limited to that described in this embodiment, and may be any suitable portion of the second film-shaped member 34.

Further, in this embodiment, the structural body 30 is a strand rope which serves as a structural body of the air dome, and the first and second film-shaped members 3 are connected via the locking ropes 46 and 50.
Although 2 and 34 are locked to the structural vehicle 30, the structural vehicle 30 and the locking method can be changed to another conventionally known one. For example, the structural body 30 is a beam of a skeleton membrane structure, a fastening plate is fastened to the structural body 30 with bolts, and the membrane end portions of the first and second membrane-shaped members 32 and 34 are respectively structured. The first and second film members 32 and 34 may be locked to the structural body 30 by being pressed and sandwiched between the body 30 and the fastening plate.

FIGS. 3 to 5 are side sectional views for explaining the method of forming the membrane edge closed structure of this embodiment, and these figures show the sectional views corresponding to FIG.

In forming the membrane edge closed structure of this example,
First, the first membrane member 32 having one side 36a of the first closing member 36 pre-bonded thereto and the second membrane 38 having one side 38a of the second closing member 38 pre-bonded thereto. The member 34 is prepared (FIG. 3).

Next, the first film member 32 is attached to the locking rope 46.
Is locked to the structural body 30 via the second film-shaped member 3
4 is locked to the structural body 30 via the locking rope 50. After that, the structural body 30 is stretched between the beams of the air dome (not shown) (FIG. 4).

Next, the first and second closing members 36 and 38.
Face the other side 36b and 38b of the. On this occasion,
When the bag-shaped body 40 is formed, the portions on the side 40a which is the inner surface of the bag-shaped body 40 are opposed to each other (FIG. 5). After that,
The other sides 36b and 38b are heat-welded to form a bag-like body 40, and the closed-membrane structure shown in FIG. 1 is obtained. At the time of heat welding, a thermosetting adhesive sheet or adhesive may be interposed between the welding surfaces of the other side 36b and 38b to perform welding.

FIG. 6 is a sectional view schematically showing the overall construction of the film welding machine of the second embodiment of the present invention. In FIG. 6, a hidden line is schematically shown so as not to hinder the understanding of the configuration.

The film welding machine shown in the figure is a suitable apparatus for heating and welding the other sides 36b and 38b of the first and second closing members 36 and 38, and is a device suitable for facing each other. A first state having first and second pressing surfaces 54 and 56, a first state in which a pressing force is applied between these first and second pressing surfaces 54 and 56, and a second state in which the pressing force is released. Freely formable handheld vice 58 and heating means 6 provided on the first and second pressing surfaces 54 and 56, respectively.
0 and 62.

The vise 58 may be any hand-held type vise that is easy to carry and carry.
Examples of such a hand-held vise include a pliers-type hand vise and a handheld vise.

In this embodiment, the vise 58 is a pliers type hand vise, and has a first pressing member 64 and first and second arm members 66 and 68 which are sequentially connected to the first pressing member 64. A connecting member 70 for connecting the first pressing member 64 and the second arm member 68, and a second pressing member 72 provided on the connecting member 70.

On one side 64a of the first pressing member 64,
The first pressing surface 54 is provided, and the other end side 64b of the first pressing member 64 is rotatably connected to the one end side 66a of the first arm member 66 via the shaft 74. Then, the one end and the other end 64c of the first pressing member 64 is rotatably connected to the one end side 70a of the connecting member 70 via the shaft 76.
The other end side 66b of the first arm member 66 and the connecting member 70
The other end side 70b extends from the first pressing member 64 in substantially the same direction (see FIG. 9 described later).

Further, between the one end and the other end 66c of the first arm member 66, the one end side 68 of the second arm member 68 is provided.
a and the other end side 68 b of the second arm member 68, and the other end side 70 of the connecting member 70.
It is rotatably connected to b through a shaft 80.

The side 72a at one end of the second pressing member 72
Is provided with a second pressing surface 56, and the other end side 72b of the second pressing member 72 is provided between the one end and the other end 70 of the connecting member 70.
bind to c. Side 72a at one end of the second pressing member 72
From the connecting member 70 in a direction substantially the same as the side 64a at one end of the first pressing member 64, and the second pressing surface 56 faces the first pressing surface 54. Therefore, the pressing surfaces 54 and 56 sandwich the connecting member 70 and the arm member 6
Located opposite 6 and 68.

In connecting the second pressing member 72 and the connecting member 70, the second pressing member 72 may be fixed to the connecting member 70, but here the other end of the second pressing member 72 is connected. The side 72b is formably joined to the connecting member 70 in a stationary state and a moving state. Although various methods can be used as such a coupling method, here, a male thread is provided between one end and the other end of the connecting member 70, and a female thread 82 is screwed to the male thread 70c. Further, the sliding members 84 and 86 are slidably locked to the male screw 70c. For example, the sliding members 84 and 86 are O-rings,
These O-rings are slidably inserted into the screws 70c. Then, a female screw 82 is arranged between the sliding members 84 and 86, and these sliding members 84 and 86 are connected to the second pressing member 7.
It is fixed to the side 72b of the other end of 2. When the female screw 82 is normally or reversely rotated, the second pressing member 72 moves together with the female screw 82 along the male screw 70c. When the rotation of the female screw 82 is stopped, the second pressing member 72 is connected to the connecting member 7
It is in a stationary state at an almost constant position of 0.

Further, between the first arm member 66 and the second arm member 68, an auxiliary lever 88 for exerting a force by the lever action is provided. Side 88a at one end of the auxiliary lever 88
Between the side 66b of the other end of the first arm member 66 and the connecting shaft 78 of the first and second arm members 66 and 68,
It is rotatably connected to the first arm member 66 via a shaft 90. The auxiliary lever 88 functions by using the side 88a at one end as a point of action, the side 88b at the other end as a force point, and the point 88c between the one end and the other end as a fulcrum, and the portion 88c between the one end and the other end of the auxiliary lever 88 is a second point. Of the arm member 68 of
The auxiliary lever 88 has a curved shape. When the other end side 88b of the auxiliary lever 88 is pushed in the direction A approaching the second arm member 88c, the lever action causes the other end side 66b of the first arm member 66 to move. 6
A rotating force can be applied in the direction B away from 8, and therefore by operating the auxiliary lever 88,
The side 66b at the other end of the first arm member 66 can be easily rotated in the direction B. The auxiliary lever 88 may not be provided.

FIG. 7 is a side view for explaining the operation of the vise 58. In the figure, the first pressing member 64 and the first and second arm members 66 and 6 when forming a first state in which a pressing force is applied between the first and second pressing surfaces 54 and 56.
8 is indicated by a solid line, and the states of the first pressing member 64 and the first and second arm members 66 and 68 in the case of forming the second state in which the load of the pressing force is released are indicated by a chain line. Indicated by.

First, the movement of the first pressing surface 54 will be described. When the other end side 66 b of the first arm member 66 is moved in the direction B away from the second arm member 68, the first pressing member 64 and the connecting shaft 74 of the first arm member 66.
Is the connecting shaft 8 of the second arm member 68 and the connecting member 70.
It moves toward 0, and as a result, the first pressing surface 54
Moves in the direction C away from the second pressing surface 56. When the other end side 66b of the first arm member 66 is moved in the direction D approaching the second arm member 68, the connecting shaft 74 of the first pressing member 64 and the first arm member 66 moves to the second direction. The arm member 68 and the connecting member 70 move in a direction away from the connecting shaft 80, and as a result, the first pressing surface 54 moves in a direction E approaching the second pressing surface 56.

When forming the first state, the other end side 66b of the first arm member 66 is moved in the direction D to move the connecting shaft 78 of the first and second arm members 66 and 68,
Position approximately on line L and hold at this position P.
Here, the straight line L is a straight line connecting the connecting shaft 74 of the first pressing member 64 and the first arm member 66 and the connecting shaft 80 of the second arm member 68 and the connecting member 70. When the other side 66b of the first arm member 66 is moved in the direction D, the first pressing surface 54 moves in the direction E approaching the second pressing surface 56, so that between the pressing surfaces 54 and 56, A pressing force can be formed by holding an object.

Various methods can be used to hold the connecting shaft 78 at the position P, but here, the position P is a position near the straight line L and closer to the connecting member 70 than the straight line L. When the connecting shaft 78 is located at this position P,
The first arm member 66 is provided indirectly via the auxiliary lever 88 or with the auxiliary lever 88 so as to stop the movement of the side 66b on the other end of the first arm member 66 in the direction D. If not present, it is brought into contact with the second arm member 68 and directly supported by the second arm member 68. On the other hand, when the position P is near the straight line L and closer to the connecting member 70 than the straight line L, the first and second pressing surfaces 54 are
In the state in which the pressing force is exerted between the first arm member 66 and the first arm member 56, the reaction force is applied to the other end side 66 b of the first arm member 66 in the direction D.
To act on the first arm member 6 as a result.
The side 66b of the other end of 6 can be kept constant at the position P.

To form the second state, if the other end side 66b of the first arm member 66 is moved in the direction B,
Since the first pressing surface 54 moves in the direction C away from the second pressing surface 56, the pressing force load between these pressing surfaces 54 and 56 can be released.

When the setting screw 82 is operated, the connecting member 7
The stationary position of the second pressing member 72 with respect to 0 can be moved. As a result, when the first state is formed, the separation distance T between the first and second pressing surfaces 54 and 56 can be lengthened or shortened. The magnitude of the pressing force between 56 can be adjusted.

FIG. 8 is a plan sectional view schematically showing the main structure of the film welding machine of this embodiment. In FIG. 8, in FIG.
A plane cross section taken along line VIII-VIII is shown, and a hidden line is schematically shown so as not to hinder the understanding of the configuration.

Further, in this embodiment, as shown in FIGS. 6 and 8, heating is performed in order to efficiently perform the joining work of the other sides 36b and 38b of the first and second closing members 36 and 38. Means 60 and 62 are provided on the other side 36b
And 38b to be elongated.

The heating means 60 comprises a heater 60a and a heating plate 60b which are sequentially provided from the first pressing surface 54 side, and the heating means 60 is first pressed through a heat insulating member 92 and a heat radiation mechanism 94. Bond to face 54. Heat dissipation mechanism 94
Is composed of two heat dissipating members 94a and 94b which are spaced apart and opposed to each other, and a coupling member 94c which couples these heat dissipating members 94a and 94b. Heat dissipation members 94a and 94
The heat dissipation efficiency is increased by b. Further, by disposing the coupling members 94c in a discrete arrangement and reducing the coupling area between the coupling members 94c and the heat radiation members 94a and 94b, the heat insulating property is enhanced. The heat dissipating member 94a is coupled to the first pressing surface 54, and the heat dissipating member 94b is coupled to the heater 60a of the heating means 60 via the heat insulating member 92 such as asbestos. The heat dissipation member 94b also has a role of preventing the hot plate 60b from being deformed during heating.

Similarly, the heating means 62 includes the second pressing surface 5
The heater 62a and the heating plate 62b are sequentially provided from the 6 side, and the heating means 62 is coupled to the second pressing surface 56 via the heat insulating member 96 and the heat radiating mechanism 98. The heat radiating mechanism 98 includes two heat radiating members 9 that are spaced apart and face each other.
8a and 98b, and a coupling member 98c that couples these heat dissipation members 98a and 98b. The heat dissipation member 98a is connected to the second pressing surface 56, and the heat dissipation member 98b is connected to the heater 62a of the heating means 62 via the heat insulating member 96. The heat dissipation member 98b also has a role of preventing the hot plate 62b from being deformed during heating.

Further, the leg 100 is provided on the heat dissipation member 94a,
A cushioning member 102 is provided at the leg ends. Buffer member 102
Prevents the leg ends from directly contacting the membrane member 32 or 34 during the joining operation of the first and second closing members 36 and 38 and damaging the membrane member 32 or 34. It is for. In addition, the control circuit 10 of the heating means 60 is attached to the leg 100.
4 is provided. The control circuit 104 has a knob for variably adjusting the heat generation temperature of the heating means 60, and a switch for turning on / off the power supply to the heating means 60.

Similarly, the leg 106 is provided on the heat radiating member 98a, and the cushioning member 108 for preventing damage to the film members 32 and 34 is provided at the end of the leg. Further, the leg 106 is provided with a control circuit 110 for the heating means 62. The control circuit 110 includes a knob for variably adjusting the heat generation temperature of the heating means 62,
It has a switch for turning on and off the power supply to the heating means 62.

By setting the vice 58 in the first state, the other side 3 of the first and second closing members 36 and 38 is
6b and 38b can be clamped between the heating means 60 and 62 so that the other side 36b and 38b can be heat welded. Then, if the vice 58 is set to the second state, the other side 36b which has finished the heat welding.
And 38b can be removed from between the heating means 60 and 62. Therefore, by alternately forming the first and second states and sequentially moving the vise 58, the other sides 36b and 3 of the first and second closing members 36 and 38 are formed.
The heat welding of 8b can be partially and sequentially repeated.

When a plier type hand vise is used as the vise 58, the side 66 at the other end of the first arm member 66 is used.
The first and second states can be formed by a simple operation of operating b, so that the joining operation of the first and second closing members 36 and 38 can be performed easily.

FIG. 9 is a plan view schematically showing the main structure of the film welding machine of this embodiment. In FIG. 9, the vice 5
8 and a film edge positioning mechanism 112 to be described later are shown in a plan view, and a hidden line is schematically shown to the extent that the understanding of the structure is not hindered.

Further, in this embodiment, as shown in FIGS. 6 and 9, the film edge positioning mechanism 112 is provided on the vice 58. The membrane edge positioning mechanism 112 includes a locking member 112.
a, connecting member 112b, pressing member 112c, and thumbscrew 1
It consists of 12d.

The locking member 112a can be attached to and detached from the connecting member 70 of the vise 58 between the one side 70a of the vise 58 and the sliding member 84 provided on the other side 72b of the second pressing member 72. Fixed to. Then, the connecting member 112b is fixed to the locking member 112a and extended to the heating means 60, 62 side, and the holding member 112c is locked to the extended portion of the connecting member 112b via the thumb screw 112d. Presser member 1
12 c is provided with a slot S formed by extending from the vice 58 toward the heating means 60, 62. The male screw portion of the thumbscrew 112d is screwed into the connecting member 112b while being inserted into the slot S, so that the pressing member 112c is placed at a desired position in the extending direction of the slot S via the thumbscrew 112d. Can be positioned.

The pressing member 112c includes heating means 60 and 62.
It is arranged at a position facing the other end portions 36b and 38b of the first and second closing members 36 and 38 which are sandwiched between and by. Therefore, by positioning the pressing member 112c at any suitable position in the extending direction of the slot S, the film ends of the other end portions 36b and 38b can be brought into contact with the pressing member 112c, and as a result, these films can be contacted. Can be positioned so that the edges are aligned. Pressing member 112
It is preferable that c is extended along the edges of these films.

The present invention is not limited to the above-described embodiments, and therefore, the size, shape, arrangement position, arrangement number and other conditions of each component can be arbitrarily changed.

[0066]

As is apparent from the above description, according to the membrane end closing structure of the first invention, the joining of the other side of the first and second closing members constitutes a bag-shaped body. Sometimes, this is done by joining parts on the inner surface of the bag-shaped body to each other. Therefore, the operator is allowed to remain on the side where the other side of the first and second closing members extends, for example, outside or inside the membrane structure, to close the first and second closing members. Since the other side of the members can be joined, the joining work can be performed very easily. Moreover, since the membrane-end closed structure can be constructed by joining the other sides of the first and second closing members, the construction can be simplified.

Further, according to the film welding machine of the second invention, heating means is provided on each of the first and second pressing surfaces of the handheld vice. Therefore, the other side of the first and second closing members can be pressed and sandwiched between these heating means by operating the handheld hand vice. The side can be heated and pressure bonded. Further, since the pressing and pinching can be released by operating the handheld vise, the heating means is moved together with the handheld vise, and the movement is sequentially performed by thermocompression bonding the other side of the first and second closing members. And the crimping work can be performed efficiently. The membrane welding machine according to the second aspect of the invention is suitable for use in the case where the other side of the first and second closing members is heat-welded in the membrane edge closed structure of the first aspect of the invention.

[Brief description of drawings]

FIG. 1 is a cross-sectional view schematically showing the configuration of a membrane edge closed structure according to an embodiment of the first invention.

FIG. 2 is a plan view schematically showing the configuration of a membrane edge closed structure according to an example of the first invention.

FIG. 3 is an explanatory diagram of formation of a membrane edge closed structure according to an example of the first invention.

FIG. 4 is an explanatory diagram of formation of a membrane edge closed structure according to an example of the first invention.

FIG. 5 is an explanatory diagram of formation of a membrane edge closed structure according to an example of the first invention.

FIG. 6 is a side sectional view schematically showing an overall configuration of a film welding machine according to an embodiment of the second invention.

FIG. 7 is an operation explanatory view of a vise included in the film welding machine according to the second embodiment of the present invention.

FIG. 8 is a plan cross-sectional view schematically showing a main part configuration of a film welding machine according to an embodiment of the second invention.

FIG. 9 is a plan view schematically showing a main configuration of a film welding machine according to an embodiment of the second invention.

FIG. 10 is a cross-sectional view schematically showing a configuration of a conventional membrane edge closed structure.

[Explanation of symbols]

 30: Structural body 32: First film-like member 34: Second film-like member 36: First closing member 38: Second closing member 40: Bag-like body 40a: With inner surface of bag-like body Side 54: first pressing surface 56: second pressing surface 58: handheld vice 60, 62: heating means

Claims (4)

(57) [Claims] 1. A structural precursor of a membrane structure, first and second membrane members arranged in parallel with the structural precursor sandwiched therebetween and locked to the structural precursor, and along the structural precursor. A first closing member provided on the first film-shaped member by extending in a strip shape,
A second closing member provided on the second film-like member extending in a strip shape along the structural body, and the first and second film-like members are provided between the first and second film-closing members. And a membrane end closed structure of a membrane structure closed by a second closing member, wherein one side of the first closing member is joined to the first film-like member and The other side of the closing member is extended, one side of the second closing member is joined to the second film-shaped member, and the other side of the second closing member is connected to the second side. One of the closing members is extended to the same side as the other side, the other side of the first and second closing members is joined to form a bag-shaped body, and the first and second closing members are formed. The membrane-end closed structure is characterized in that the members are joined to each other by joining portions on the inner surface of the bag-shaped body when the bag-shaped body is formed. 2. The membrane end closed structure according to claim 1, wherein the other side of the first and second closing members is joined by heat welding. 3. The membrane end closed structure according to claim 1, wherein the other side of the first and second closing members is extended to the outside of the membrane structure. Closed structure. 4. The membrane welding machine used for forming the membrane end closed structure according to claim 1, comprising first and second pressing surfaces facing each other, and between the first and second pressing surfaces. A first state in which a pressing force is applied to the first state and a second state in which the pressing force is released from the second state, which is freely formable, and heating means provided on the first and second pressing surfaces, respectively. A film welding machine used for forming a closed film edge structure, characterized by being provided.