JPH0726443B2 - Method and device for joining water stop plates - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for joining a water stop plate that is embedded in a joint portion of a concrete structure or the like in advance to prevent water from entering.

Conventionally, as a joining method for rubber water blocking plates, a baking joining method using a heater die has been widely used. In this method, first, the joint end portion of the water blocking plate is obliquely cut in the thickness direction, each joint end surface is subjected to a surface treatment such as buffing or grindering, and then rubber glue is applied to the joint end surface. Ten
Let dry for minutes. Then, a sheet made of unvulcanized rubber is attached so as to cover each joint end face, and then two water blocking plates are baked and joined using a heater die a as shown in FIG. That is, this heater mold a has a structure in which heaters d and e are superposed on the upper and lower molds b and c,
The water blocking plates f and g to be joined are made so that the unvulcanized rubber sheets covering the joint end faces of the water blocking plates f and g are in contact with each other.
Each unvulcanized rubber sheet is vulcanized by sandwiching it between b and c, moving down the press h and heating the water blocking plates f and g at 140 ° C for 15 to 25 minutes, and bake-bonding them to each other. To do.

[Problems to be Solved by the Invention]

As mentioned above, the bake-joining method using a conventional heater die is a surface treatment step such as buffing, a step of applying rubber glue to the joint end surface, an unvulcanized rubber sheet attaching step, and a press vulcanizing step using a heater die. Since the operation is complicated over a number of processes such as joining, skill is required for joining work, and it takes time to complete joining. Especially when joining the water stop plate at the construction site, it is necessary to use a heater mold exclusively for the construction site, but this mold is heavy and difficult to transport, and its operation is particularly complicated and requires skill. There is a problem that only a specialized engineer can perform the joining work.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and does not require a heavy and complicated heater die as in the prior art, and can be performed easily and in a short time without requiring skill. It is intended to provide a method and a device for joining a water blocking plate, which are capable of joining work with each other.

[Means for Solving the Problems]

The method of joining the water blocking plates of the present invention to achieve the above object is to arrange a sheet made of a material having flexibility and water blocking property between two opposite end faces of two water blocking plates to be joined, and to make an instant on each end face. It is characterized in that after applying the adhesive agent, each end face is pressure-bonded to the sheet.

Further, a water blocking plate joining apparatus used for carrying out the above method is a pair of upper and lower fixed dies holding one water blocking plate to be joined,
It is characterized by comprising a pair of upper and lower slide dies for holding the other water blocking plate to be joined, and a slide type drive mechanism for moving the slide dies toward and away from the fixed die.

[Action]

According to the joining method of the present invention, a sheet made of a material having flexibility is arranged between opposite end surfaces of a water blocking plate, each end surface is coated with an instant adhesive, and then each end surface is pressure-bonded to the sheet. As a result, the sheet is deformed into a shape conforming to the fine irregularities on each end face, and a close and firm bond is obtained between each end face and each opposing sheet face. Therefore, between the two water stop plates to be joined, Good bonding can be obtained. Conventionally, the method of directly joining the end faces of rubber with an instant adhesive is generally used in the automobile industry, fume tube packing, etc., but in both cases, the cross section of the rubber is small and the joining surfaces are easy to match. Is limited to. In the case of a rubber water stop plate, the joint cross section is large, there are fine irregularities, and the cut surfaces are uneven, so both end faces to be joined do not fit exactly,
As a result of the gap, the adhesive surface becomes partial and practical bonding cannot be obtained. In the present invention, the rubber water stop plate can be joined by the instant adhesive for the first time by joining both end faces of the water stop plate through the flexible sheet.

According to the joining apparatus of the present invention, one water stop plate to be joined is sandwiched between a pair of upper and lower fixed molds, and the other water stop plate is sandwiched between a pair of upper and lower slide molds to drive the slide type. With the mechanism operating and the slide die separated from the fixed die, a sheet made of a flexible material is placed between the opposite end faces of the water blocking plate, and an instantaneous adhesive is applied to each end face, followed by the slide die. By operating the drive mechanism to move the slide die in a direction approaching the fixed die, each end face of the water blocking plate is pressed against the sheet.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of a water blocking plate joining apparatus according to the present invention with a part of a sliding wooden drive mechanism omitted, FIG. 2 is a front view of the same embodiment, and FIG. It is the side view seen from the slide wooden pattern side.

The joining apparatus 1 of the present embodiment includes a pair of upper and lower fixed wooden molds 2, a pair of upper and lower sliding wooden molds 3, and a sliding wooden mold drive for moving the sliding wooden mold 3 toward and away from the fixed wooden mold 2. The mechanism 4 (FIGS. 2 and 4) is provided.

The fixed wooden mold 2 is composed of an upper mold 2a and a lower mold 2b. Upper mold 2a is lower mold 2b
It is hinged to the lower mold 2b so that it can be opened and closed. The lower mold 2b is fixed to the pedestal 14 by an appropriate method such as screwing. The end of the lower die 2b on the side of the sliding wooden die 3 projects toward the side of the sliding wooden die 3 more than the edge of the upper die 2a, and provides a work surface 2c for performing the crimping work of the end faces of the water blocking plates to the sheet described later. Is forming. The lower surface of the upper mold 2a and the upper surface of the lower mold 2b are formed in a shape that matches the shape of the rubber water blocking plate 5 to be joined. Further, the lower mold 2b is provided with a slit 6 for cutting the joint end portion of the rubber water blocking plate 5 to form a joint surface in the width direction of the rubber water blocking plate 5.

The slide mold 3 comprises an upper mold 3a and a lower mold 3b. The upper mold 3a is hinged to the lower mold 3b so that it can be opened and closed with respect to the lower mold 3b. Further, on the lower surface of the lower die 3b, there are formed grooves 7 and 7 (FIG. 4) which are fitted into the projections 15 and 15 formed on the slide portion 14a of the pedestal 14, and the slide wooden mold 3 is attached to the pedestal It is possible to slide on the slide portion 14a in a direction of approaching or separating from the fixed wooden pattern 2. Upper mold 3a of slide wooden mold 3
The lower surface and the upper surface of the lower mold 3b are formed in a shape that matches the shape of the rubber water blocking plate 5 to be joined.

To fix the fixed wooden pattern 2 and the sliding wooden model 3 in the closed state, the "U" -shaped fixing metal fitting 11 as shown in FIG.
Then, the open side portion of each wooden mold may be fixed so as to be sandwiched, or a metal fitting such as a buckle may be attached to each upper mold and lower mold.

On both sides of the pedestal 14, both sides 8a, 8a of a sliding wooden drive stake 8 made of a U-shaped steel material are pivotally attached, and a handle 8c is welded to a horizontal portion 8b of the drive stake 8. . One end of a pin 9 fixed to the middle of each side 8a of the drive rod 8 is formed at the other end of a driven rod 10 pivotally attached to the lower die 3b of the slide wooden die 3 and has a locking recess. 10a is engaged. The drive rod 8 and the driven rod 10 form a sliding wooden drive mechanism.

An example of a method of joining the water blocking plates using the above apparatus will be described.

First, with the fixed wooden mold 2 open, the end of each rubber water blocking plate 5 is straddled over the slit 6 so that the end surface to be joined matches the slit 6 of the lower mold 2b of the fixed wooden mold 2. Lower mold 2b
After mounting on the top and fixing and fixing the fixed wooden mold 2, the water blocking plate 5 is cut along the slit 6 with a knife or the like to form an end face that is as easy to join as possible.

Next, with the fixed wooden mold 2 and the sliding wooden mold 3 opened and the sliding wooden mold 3 separated from the fixed wooden mold 2, the rubber water blocking plate 5,
As shown in FIG. 1, 5 are spaced apart from each other on the work surface 2c provided on the lower die 2b of the fixed wooden die 2 and then each wooden die 2,
Close and fix 3. Next, as shown in FIG. 3 (a), a sheet 12 made of a material having flexibility, relatively strength, and water stopping properties and having the same cross-sectional shape as the rubber water blocking plate 5 is provided with a rubber facing the rubber sheet. It is placed between the water stop plates 5, 5. The seat 12 is made of, for example, NR soft rubber and has a hardness of 44 to
46Hs, tensile strength ^{180kg / cm 2 ~210kg / cm 2} , elongation 640% 6
About 70% or CR type natural vulcanized rubber with hardness of 25 ~
35Hs (about 60Hs after vulcanization), Tensile strength (after vulcanization) 100kg / cm
^{2. A material with} an elongation of about 600% (about 350% after vulcanization) is suitable.

Next, after dropping the instant adhesive onto the joining end faces of the rubber water blocking plates 5 and 5 immediately or while dropping the instant adhesive onto the joining end faces, the handle 8c of the sliding wooden drive bar 8 is moved as shown in FIG. By pushing in the direction of arrow A, the sliding wooden mold 3 is driven in the direction of approaching the fixed wooden mold 2, and as shown in FIG. 3 (b), the joining end surfaces of the rubber water blocking plates 5 and 5 are seated. Crimp on each of the 12 facing surfaces. A crimping time of 10 to 30 seconds is sufficient.

After the above-mentioned crimping time has elapsed, the rubber water blocking plates 5, 5 joined by opening the respective wooden molds 2, 3 are removed, the bonding surface is checked, and a bonding agent is poured into the defective bonding portion to complete the bonding. . As shown in FIG. 6, a burch rubber sheet, a vulcanized rubber sheet, and a natural vulcanized rubber sheet are provided in order to prevent the joints from becoming water passages after the rubber water blocking plates 5 and 5 are embedded. Alternatively, it is preferable to attach a protective sheet 13 made of rubber-based paint or the like around the joint.

In the above embodiment, the slit 6 for cutting the water blocking plate is provided in the lower mold 2b of the fixed wooden mold 2, but the slit 6 may be provided in the lower mold 3b of the sliding wooden mold 3. Further, the slide wooden pattern drive mechanism is not limited to that of the above-described embodiment, and any other mechanism may be used as long as the slide wooden mold can be moved toward and away from the fixed wooden mold. Further, in the above embodiment, the wooden mold is used as the fixed mold and the slide mold, but the fixed mold,
Both or either of the slide types may be formed of other relatively lightweight material such as plastic. Further, in the above embodiment, the case of joining the center valve type water blocking plate as the water blocking plate was described, but the present invention is not limited to this, and may be applied to the joining of other types of water blocking plates. You can Also, as a material, it can be applied to a synthetic resin water stop plate such as a PVC water stop plate.

〔The invention's effect〕

As described above, according to the joining method of the present invention, a sheet made of a material having flexibility and water blocking property is arranged between the opposite end surfaces of the water blocking plate, and after applying the instantaneous adhesive to each end surface. By press-bonding each end face to the sheet, the sheet is deformed into a shape conforming to the fine irregularities of each end face, and a close and firm bond is obtained between each end face and each sheet face facing each other, thus A good joining state can be obtained between the two water blocking plates to be joined. According to the present invention, it is possible to use a heater mold that is difficult to carry and requires skill to operate as in the conventional baking joining method, and a device such as a wooden mold that is easy and lightweight can be used. The equipment can be easily transported,
Moreover, a skilled technician is unnecessary. Further, according to the joining method of the present invention, the surface treatment step such as buffing and the step of attaching the unvulcanized rubber sheet in the conventional baking joining method are not necessary, and the treatment step is simplified. Further, according to the method of the present invention, by using an instant adhesive, a rubber paste drying step (5 to 10 minutes), a heating and pressing step (15 to Since there is no time-consuming process like 25 minutes), the working time can be greatly reduced.

Further, according to the water blocking plate joining apparatus of the present invention, the above method can be implemented with an extremely simple and lightweight structure.

Further, according to the water blocking plate joining apparatus of the present invention, since the slit for cutting the water blocking plate is formed in either the fixed type or the sliding type, the joining end face of the water blocking plate is formed as an end face that is easily joined. Therefore, the cutting can be easily performed without using any other device.

[Brief description of drawings]

FIG. 1 is a perspective view showing one embodiment of a water blocking plate joining apparatus according to the present invention, FIG. 2 is a front view of the same embodiment, and FIG. 3 is a perspective view for explaining a water blocking plate joining state. FIGS. 4 and 5 are side views of the above embodiment as seen from the slide mold side, FIG. 5 is a perspective view showing an example of a metal fitting for fixing the mold of the same embodiment, and FIG. 6 is joined. FIG. 7 is a perspective view showing a state in which a protective sheet is attached to a joint portion of a water blocking plate, and FIG. 7 is a perspective view showing a heater mold used in a conventional method. 1 ... Joining device, 2 ... Fixed type, 3 ... Sliding type, 8
... Sliding type drive mechanism, 12 ... Sheet made of flexible material

Claims (3)

[Claims] 1. A pair of upper and lower fixed molds, which are composed of an upper mold and a lower mold that are hinged to each other so as to be openable and closable, and sandwich one water blocking plate to be joined between the upper mold and the lower mold, A base provided so as to extend from the lower mold of the fixed mold, and an upper mold and a lower mold arranged on the base and hinged to each other so as to be openable and closable, and between the upper mold and the lower mold. A water blocking plate bonding apparatus is provided that includes a pair of upper and lower slide molds for sandwiching the other water blocking plate to be bonded, and a slide type drive mechanism for moving the slide mold closer to and away from the fixed mold. , One of the two water blocking plates to be joined in a state of being separated from the fixed mold is held between the fixed mold and the other of the slide molds, and the two water blocking plates have flexibility between opposite end faces. And a sheet made of a water-blocking material and having the same cross-sectional shape and material as the water-blocking plate. Then, after applying an instant adhesive to each end face, the slide die drive mechanism is operated to bring the slide die closer to the fixed die to crimp each end face to the sheet. Joining method. 2. A pair of upper and lower fixed molds which are composed of an upper mold and a lower mold which are hinged to each other so as to be openable and closable, and which holds one of the water stop plates to be joined between the upper mold and the lower mold. A pedestal provided so as to extend from the lower mold of the fixed mold, and an upper mold and a lower mold which are arranged on the pedestal and hinged to each other so as to be openable and closable, and between the upper mold and the lower mold. And a pair of upper and lower slide dies for holding the other water stop plate to be joined to the fixed die, and a slide type drive mechanism for moving the slide die toward and away from the fixed die. . 3. The joining device for a water stop plate according to claim 2, wherein a slit for cutting the water stop plate is formed in the lower die of the fixed die or the slide die.