JPS6046026B2 - Method and device for pressurizing sheet polymer joints - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for pressurizing a sheet weight support portion, and more specifically, the present invention relates to a method and apparatus for pressurizing a sheet weight support portion, and more specifically, a rubber sheet or the like is bonded by polymerizing the ends thereof, applying pressure, heating, and vulcanizing them. The present invention relates to a method and an apparatus for pressurizing a seat weight base when joining sheet bodies together using an adhesive or the like.

When constructing a reservoir or other building, for example, in the case of a reservoir, a rubber tarpaulin sheet is laid on the walls of the reservoir to make it more completely waterproof.

In the case of structures, a loop intersheet is laid on the roof surface prior to roofing.
By the way, conventionally, this rubber waterproof sheet or loop intersheet has been manufactured in a certain limited width and length due to manufacturing process, transportation, etc. constraints, and when using it, the sheet edges must be The parts were connected and integrated, and a method of joining using an adhesive was used as a joining means.

However, when joining with adhesive, the adhesive strength of the joint tends to be uneven due to the location where the adhesive is used, usage conditions, and work method, making it difficult to achieve uniform adhesive strength. Therefore, over a long period of time, the sheets gradually begin to peel off from the weakly bonded parts of the joints, and eventually water leakage, rain leakage, etc. occur.

Therefore, in order to eliminate uneven adhesion at the joints of the above-mentioned waterproof sheet or loop intersheet, and to increase the adhesive strength, a rubber sheet is heated under pressure at the joints.
It has been proposed that they be integrated by vulcanization bonding, but according to this method, it is possible to increase the strength of the bonded area by minimizing unevenness in adhesive strength due to factors such as bonding conditions. On the other hand, in order to vulcanize the comb under pressure and heat, a large amount of equipment is required, such as a press equipment that uses hydraulic pressure, water pressure, or steam pressure. When using these devices, it is impossible to carry out vulcanization of rubber sheets, and even if they are joined in advance in a factory, it is impossible to transport large rubber sheets. The drawback was that it was extremely difficult to join them together.

In view of the above-mentioned drawbacks, the present invention has been made with the object of providing a method and apparatus for pressurizing the sheet overlap area, which allows waterproof sheets such as rubber sheets to be easily pressurized and vulcanized and bonded at the construction site. An adsorbent whose opening periphery is made of an elastic material is adsorbed onto a flat surface while the inside is in a vacuum state, and the amount of compressive deformation of the periphery of the opening of the adsorbent which is compressively deformed due to the adsorption force at this time is calculated. , the heat is transmitted via a bridge member to a heating member placed on a sheet overlap area laid on substantially the same plane as the plane, thereby pressurizing and heating the overlap area. Another invention is an apparatus for carrying out the above method, in which the lower surface is attached to the side surface of a box-shaped body formed of a backing member having an elastic opening edge. The heating member is integrally arranged and fixed in parallel with the lower edge of the box-like body, and the box-like body is provided with an air outlet and an inlet. .

Next, the present invention will be explained with reference to examples. FIG. 1 is a conceptual diagram showing a specific example of the present invention.

In this invention, for example, when a rubber sheet or the like is vulcanized and bonded by polymerizing its end 1'' and applying pressure and heat to this part,
In order to pressurize the heating member 2 in the direction of the overlapping part A, an adsorbent 3 whose opening periphery is made of an elastic body 3A is adsorbed onto a plane C by creating a vacuum inside, and a vacuum pump (Fig. (not shown), the amount of compressive deformation of the elastic member 3A compressively deformed by the suction force is transmitted via the bridge member 4, thereby pressurizing the heating member 2 placed on the overlapping part. It is composed of

In this case, the suction pressure applied to the adsorbent 3 is 1k9 per 1 d when the inside is completely vacuumed, and therefore, the pressure P applied to the heating member 2 increases the area in contact with the overlapping part A of the heating member 2 by a1 If the opening area of the adsorbent 3 is b, and the degree of vacuum is h, then Bxh P=〒K9ld.

By the way, the pressure required for vulcanization bonding is generally P=3.
kgId is preferably about P=5 kgId, so in order to apply the desired pressure P to the heating member 2, the degree of vacuum inside the adsorbent 3 is determined by the pressing surface area a of the heating member 2 and the opening area of the adsorbent 3. For example, 3 kg
When applying a pressure greater than Ic1t, when ν=±, the degree of vacuum inside the adsorbent is set to 228m91Hga10b=?
When , the degree of vacuum inside the adsorbent is 456m91Hya10ν
= 1, the degree of vacuum inside the adsorbent is 684m91HVa1
If the degree of vacuum cannot be increased beyond a certain limit, for example, as shown in FIG. The applied pressing force can be adjusted.

Next, FIG. 3 is a perspective view of an embodiment of a pressurizing device for sheet/overlapping parts used in carrying out the present invention, and FIG. 4 is a sectional view taken along the line ■-■ in FIG. . The pressurizing device W of the present invention includes a box-like body 10 that opens downward and a heating member 20 that is integrally arranged in parallel with the box-like body 10.
is formed by airtightly joining the canopy part 11 and the side wall parts 12, . A backing member 13 is provided, and the canopy portion 11 is provided with an air injection and discharge pipe 14. In addition, 15 in the figure is a barometer for checking the atmospheric pressure inside the box-shaped body 10.

The heating member 20 is constituted by a heating element having an electric heater or the like built into the casing 21, or a heating body made of an appropriate means such as a metal having a high heat capacity, and the lower surface 21A is approximately the same as the lower edge of the opening of the box-shaped body 10. It is integrally attached to the extension part 1'' of the box-shaped canopy part 11 via a heat insulating material 23 so as to form a flat surface.

As shown in FIG. 5, the means for attaching the heating member 20 may be a structure in which the box-shaped body 10 and the heating member 20 are separated from each other and connected in a saw-like manner using a channel material 30 or the like; As shown in the figure, a structure may be adopted in which two box-like bodies 10, 10 are connected at an appropriate interval by a channel material 30 or the like, and a heating member 20 is attached between them.

In this case, it is desirable to attach the heating member 20 to the channel material 30 via the adjustment member 22 so that the height position of the heating member 20 can be adjusted. In order to heat and press the sheet overlapping area with the pressurizing device w of the present invention, the device W is placed on a plane S so that the heating member 20 is positioned above the sheet overlapping area A, as shown in FIG. Thereafter, the air inside the box-like body 10 is sucked out from the air ejection pipe 14 by a vacuum pump (not shown).

At this time, since the box-like body 10 is in contact with the plane S via the backing member 13, the inside of the box-like body 10 is isolated from the outside air, and therefore, the vacuum pump (not shown) is operated to gradually create a vacuum state. The box-like body 10 begins to adhere to the plane S.

Note that when the box-like body 10 is placed on the laid sheet 1, at least the flat portion of the sheet 1 on which the box-like body 10 is attracted is fixed to the base surface.

When the degree of vacuum inside the box-shaped body 10 increases, it is even more strongly attracted to the plane S, and finally the backing member 13 begins to be compressed.
At this time, since the heating member 20 is integrally fixed in parallel with the box-shaped body 10, it is strongly compressed in the plane direction together with the box-shaped body 10, and therefore strongly compresses the lower sheet overlapping portion A. .

Next, when the degree of vacuum reaches the desired degree, the vacuum pump is stopped, the adsorption state is maintained, the heating member is compressed into the polymerization part A, and the polymerization part is fully vulcanized and bonded. .

At this time, the suction force is checked using a barometer 15, and if the degree of internal vacuum decreases, the vacuum pump is restarted as appropriate to maintain the suction force above a certain level. When vulcanization and bonding are completed, the valves of the air injection and discharge pipes 14 are opened, air is injected, and the apparatus is removed.

In the case of the configuration shown in FIG. 6, the vertical height position of the heating member 20 is adjusted by the adjustment member 22, and after it is placed on the sheet weight joining area, the two box-like bodies 10, 10 are simultaneously placed on a flat surface. and pressurize the heating member 20 in the same manner as above.

In addition, in the above embodiment, in order to obtain the pressurizing force, the compressive deformation of the elastic packing member 13 was shown, but in order to further increase this pressurizing force, for example, as shown in FIG. The side wall portion 12 of the box-like body 10 is joined to the box-like body 10 via a lever 50 to increase the pressing force, or to increase the amount of compressive deformation, as shown in FIG.
It may be formed into a bellows-like shape of 12'', and the side wall itself may also be configured to be expandable and retractable.

Since this invention is constructed as described above, when sequentially joining rubber sheets, etc., the pressure necessary for vulcanization joining can be obtained extremely easily and at the construction site. It is now possible to easily perform on-site vulcanization and bonding of rubber sheets, which has been difficult in the past, and the equipment used has a simple structure, is portable, and can also obtain a large pressing force. Furthermore, this device can be used not only for vulcanization bonding of rubber sheets as described above, but also for bonding sheet bodies using an adhesive or the like. Furthermore, it has various effects such as a wide range of applications, such as being applicable to work that requires pressing force that is difficult to obtain in conventional on-site construction.

[Brief explanation of the drawing]

1 and 2 are conceptual diagrams for explaining the method of this invention, FIG. 3 is a perspective view of an embodiment of the apparatus of this invention, and FIG.
The figure is a sectional view taken along the line ■-■ of FIG. 3, FIG. 5 is a sectional view of another embodiment, FIG. 6 is a sectional view of yet another embodiment a, and FIG. 7 is a sectional view of yet another embodiment. It is a diagram. 1...Sheet, 2...Heating member, 3.
...Adsorbent, 3A...Elastic body, 10...
...Box-shaped body, 13.. Backing member having elasticity,
14... Air injection/discharge pipe, 20...
Heating member, 21...lower surface, A...overlapping part of sheets, C...plane, P...pressure, W...sheet assembly Pressurizing device.

Claims (1)

[Scope of Claims] 1. An adsorbent whose opening periphery is made of an elastic material is adsorbed onto a flat surface while the inside is in a vacuum state, and the adsorbent's opening periphery is compressed and deformed by the adsorption force at this time. The amount of deformation is transmitted via the bridging member to a heating member placed on the overlapping part of the sheet body laid on substantially the same plane as the plane, thereby pressurizing and heating the overlapping part. A method for pressurizing a seat weight joining area. 2. A heating member is integrally arranged and fixed on the side surface of a box-like body formed of a packing member whose opening edge opening downward is made of an elastic packing member so that the lower surface thereof is almost the same as the lower edge of the box-like body. , and the box-shaped body is provided with an air discharge and an air injection port.