JP7296617B2 - Auxiliary jig for adhesion of seal edge and method for bonding seal material using auxiliary jig for adhesion of seal edge - Google Patents

Description

In order to form an annular seal mounted on the outer periphery of a pair of connected flange portions, the present invention is a state in which a flexible belt-shaped sealing material is deformed into a circular shape, and the ends of the sealing material are bonded together. The present invention relates to a sealing end adhesion auxiliary tool for assisting adhesion with an agent, and a sealing material adhesion method using the seal end adhesion auxiliary jig.

For example, as a technique for preventing water leakage from the connection part of the flange part of an existing water pipe, Patent Document 1 discloses a sealing material (in the document, water leakage A structure is shown in which a protective material is wound and a holding material is provided in a pressed state on the outer peripheral surface.

In this patent document 1, the sealing material (leakage prevention material in the literature) has a form in which the contact surfaces at both ends of the sealing material are brought into contact with each other in a watertight manner, and the sealing material is wound around the outer periphery of the flange portion so as to prevent water leakage at the contact portion. is configured to

Japanese Patent Application Laid-Open No. 2007-92802

In an existing water pipe, water may leak from the mating surfaces of the two flanges due to aging deterioration of the packing sandwiched between the mating surfaces of the two flanges. The technique of Patent Document 1 is used from the viewpoint of preventing such water leakage.

Considering the leakage prevention performance, the ideal sealing material to be placed on the outer periphery of the flange is a seamless ring. Adhesives are also used to bond both ends of the sealing material.

Such bonding not only allows the formation of a seamless annular seal, but also allows the formation of an annular seal of a proper size corresponding to the outer peripheral length of the flange.

However, in the work of bonding both ends of the sealing material at a construction site, it is essential that the positions of both ends of the sealing material be accurately determined. It is difficult to accurately determine the positions of both ends, and there is room for improvement.

For these reasons, there has been a need for a sealing end adhesion auxiliary jig capable of accurately bonding both ends of a strip-shaped sealing material, and a sealing material for accurately bonding both ends of the sealing material using this seal end adhesion auxiliary jig. Adhesion method is required.

A characteristic configuration of the seal end bonding auxiliary jig according to the present invention is that a flexible belt-shaped sealing material is deformed into a circular shape in order to form an annular seal mounted on the outer periphery of a pair of connected flange portions. A sealing end adhesion assisting jig for assisting adhesion of the ends of the sealing material with an adhesive in a state in which one end of the sealing material is positioned at a position in the width direction and the thickness direction of the sealing material. and the other end of the seal member are arranged to restrict movement in the longitudinal direction with the position of the seal member in the width direction and the thickness direction determined. and an injection part that enables injection of the adhesive into the gap between the ends of the sealing material is formed at a boundary position between the regulation support part and the guide support part, The regulation support portion and the guide support portion each include a pair of side walls that sandwich the sealing material in the width direction, and an upper wall that extends inward in the width direction from the pair of side walls so as to sandwich the sealing material in the thickness direction. and a bottom wall, and a discharge guide part is formed to allow the flow of the adhesive, which is injected from the injection part, and overflows to the outside from the gap between the ends of the sealing material. It is in.

According to this characteristic configuration, when forming an annular seal by adhering the ends of the seal material, one end of the seal material is deformed into a circular shape, and one end is regulated by the seal end adhesion auxiliary jig. One end and the other end of the sealing material are set in a positional relationship that is optimal for bonding by holding the sealing material on the supporting portion and supporting the other end on the guide supporting portion of the seal edge adhesion auxiliary jig. can. Further, by injecting the adhesive from the injection part in a state in which the positions of both ends of the sealing material are determined in this way, it is possible to feed the adhesive between the both ends of the sealing material. Furthermore, in a state in which one end of the sealing material is held by the regulating support and the other end of the sealing material is supported by the guide support, for example, an operator may manually apply force to the guide support. Good adhesion is achieved by applying pressure to one end by acting on the other end. At this time, the upper wall and the bottom wall prevent the sealing material from floating, thereby improving workability. Further, even if the injected adhesive overflows from the gap between the ends of the sealing material, the discharge guide part allows the flow of the overflowing adhesive. It is possible to eliminate the problem of the sealing material flowing between the outer surface and the inner surface of the seal edge bonding auxiliary jig and bonding the sealing material to the inner surface of the seal edge bonding auxiliary jig.

As another configuration, a plurality of convex portions are formed along the longitudinal direction on one side of the sealing material in the thickness direction, and the convex portions are fitted into the regulation support portion and the guide support portion. A concave portion may be formed, and the sealing material may be guided in a state in which the convex portion is fitted into the concave portion.

According to this, even if the sealing material is inserted into either the regulating support portion or the guide supporting portion, the sealing material can be guided in a state where the position of the sealing material is determined by fitting the convex portion of the sealing material into the concave portion. becomes possible.

As another configuration, the regulation support portion may include a friction surface that regulates movement of the seal member in the longitudinal direction by coming into contact with the outer surface of the seal member.

According to this, when performing the bonding operation, for example, by artificially applying pressure to the vicinity of one end of the sealing material to press it against the friction surface, the one end of the sealing material is regulated and supported. Firmly held to the part, reliable adhesion is possible.

As another configuration, a cover portion that covers the surface of the sealing member may be provided across the regulation support portion and the guide support portion.

According to this, the sealing material is brought into contact with the inner surface of the cover portion, so that the sealing material can be guided, and the ends of the sealing material can be held at appropriate positions.

A feature of the sealing material bonding method using the seal end bonding auxiliary jig according to the present invention is that the sealing material is deformed into a circular shape in a region surrounding the outer periphery of the pipeline in which the flange portion is formed, and the seal is one end of the sealing material is supported by the regulating support portion of the sealing edge adhesion auxiliary jig, the other end of the sealing material is supported by the guide support portion of the seal edge adhesion auxiliary jig; By injecting an adhesive into the gap between the ends of the sealing material and applying an external force to the other end supported by the guide support portion, the other end is crimped to the one end. The point is that a seal edge adhesion auxiliary jig is used for performing adhesion by pressing and removing the seal edge adhesion auxiliary jig after the adhesion is completed.

According to this characteristic configuration, the sealing material is deformed into a circular shape, one end of the sealing material is held by the regulating support portion of the sealing end adhesion auxiliary jig, and the other end of the sealing material is held by the seal end adhesion auxiliary jig. An adhesive is injected into the gap between the ends of the sealing material while it is supported by the guide support. Next, by applying an external force to the other end of the sealing material supported by the guide support portion, it is possible to bond the sealing material while being pressed in the direction of the one end. When bonding in this way, the position of one end of the sealing material is regulated by the regulation support, and the position of the other end of the sealing material is regulated by the guide support. Adhesion between the ends of the sealing material is realized.

After the bonding is completed in this way, the ring-shaped sealing material can be formed by removing the seal end bonding auxiliary jig from the sealing material. By moving the ring-shaped sealing material from the outer periphery of the pipe line and providing it in close contact with the outer periphery of the flange, it is possible to seal the connecting portion of the flange.

FIG. 2 is a perspective view showing a flange portion of a water pipe, a sealing material, and a seal end bonding auxiliary jig for bonding the end of the sealing material; FIG. 4 is a perspective view of a seal edge bonding auxiliary jig; It is a longitudinal cross-sectional view of a seal edge adhesion auxiliary jig. FIG. 4 is a vertical cross-sectional view of a seal edge bonding auxiliary jig during bonding. FIG. 4 is a cross-sectional view of the sealing end bonding auxiliary jig into which the sealing material is inserted; 4 is a cross-sectional view of the sealing material; FIG. FIG. 5 is an exploded perspective view when fixing the annular seal to the flange portion with a reinforcing metal fitting; FIG. 4 is a perspective view of a state in which the annular seal is fixed to the flange portion with a reinforcing metal fitting; FIG. 4 is a cross-sectional view of the fixed ring reinforcement fitting, ring seal, and flange portion; It is the perspective view which looked at the seal|sticker edge part adhesion|attachment auxiliary jig|tool of another embodiment (a) from the top. It is the perspective view which looked at the seal|sticker edge part adhesion|attachment assistance jig|tool of another embodiment (a) from the bottom. It is sectional drawing of the seal|sticker edge part adhesion|attachment assistance jig|tool of another embodiment (a). It is the perspective view which looked at the holder and auxiliary jig of another embodiment (b) from the top. It is the perspective view which looked at the holder of another embodiment (b) from the bottom. It is sectional drawing of the holding jig with which the holding|maintenance tool of another embodiment (b) was mounted|worn. It is sectional drawing of the holding jig with which the holding|maintenance tool of another embodiment (b) was mounted|worn. It is the perspective view which looked at the seal|sticker edge part adhesion|attachment auxiliary|assistant jig|tool of another embodiment (c) from the top in the closed attitude|position. It is the perspective view which looked at the seal|sticker edge part adhesion|attachment auxiliary|assistant jig|tool of another embodiment (c) from the bottom in the open attitude|position. It is sectional drawing in the closing attitude|position of the seal|sticker edge part adhesion|attachment auxiliary|assistant jig of another embodiment (c).

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows a pair of flange portions 2 that connect an existing water pipe 1 (an example of a pipeline), and an annular seal CS (FIGS. 7 and 9) attached to the outer periphery of the flange portion 2. ), a seal edge adhesion aid 10 is shown that joins the ends of the seal material S together with an adhesive B (see FIG. 4).

The flange portion 2 of the water pipe 1 is connected by a plurality of bolts 3 with a packing (not shown) sandwiched between the connection surfaces. .

For this reason, the end portions of the sealing material S are adhered with an instant adhesive to form an annular seal CS, and this annular seal CS is mounted on the outer periphery of the pair of flange portions 2, as shown in FIG. As shown in FIG. 8, water leakage prevention work has been performed in which an annular seal CS is fixed to the outer periphery of the flange portion 2 in a crimped state by connecting two semicircular reinforcing metal fittings 5 . Details of the configuration of the reinforcing metal fitting 5 will be described later.

However, at a construction site, even a skilled worker finds it difficult to hold and bond the ends of the sealing material S at proper positions. In particular, when the ends of the sealing material S are adhered together, it is essential to apply an appropriate amount of pressure in a direction to bring the ends into close contact with each other, but such work is also difficult.

In order to solve such a problem, in order to assist the work of bonding the ends of the sealing material S with the adhesive B, a sealing edge adhesion assisting jig 10 (hereinafter referred to as an embodiment) shown in FIGS. hereinafter referred to as an auxiliary jig 10) is used.

[Auxiliary jig for bonding seal edges]
As shown in FIG. 1, the sealing material S is made of rubber that is flexible and has a belt shape. The seal material S has a predetermined seal width W and a predetermined seal thickness T as shown in FIG. Sa is formed.

As shown in FIGS. 2 to 5, the auxiliary jig 10 includes a pair of left and right upper walls 11, a side wall 12 connected to the left and right upper walls 11, and a pair of side walls 12 connected to the upper wall 11. The restriction support portion 10A, the guide support portion 10B, the injection portion 10C, and the discharge guide portion 10D are formed by processing a material having a single bottom wall 13 in parallel posture. The material of the auxiliary jig 10 may be either resin or metal, but it is preferable to select a resin material to which the adhesive B does not stick.

In this auxiliary jig 10, a regulation support portion 10A is formed at one end in the longitudinal direction, and a guide support portion 10B is formed at the other end in the longitudinal direction. An injection portion 10C, which enables the injection of the adhesive B, and a discharge guide portion 10D, which allows the flow of the adhesive to the outside from the gap between the ends of the sealing material S, are formed at the boundary position with the sealant 10B. there is

In particular, the pair of side walls 12 of the regulation support portion 10A and the guide support portion 10B are arranged at positions sandwiching the sealing material S in the width direction, and the gap therebetween is set slightly wider than the sealing width W of the sealing material S. there is As a result, the position of the sealing material S in the width direction is determined by the pair of side walls 12 .

In addition, the upper wall 11 and the bottom wall 13 of the regulation support portion 10A and the guide support portion 10B are arranged at positions sandwiching the sealing material S in the thickness direction, and the gap between them is set slightly wider than the seal thickness T. . Thereby, the position of the sealing material S in the thickness direction is determined by the top wall 11 and the bottom wall 13 . The top wall 11 and the bottom wall 13 are formed at positions extending inwardly of the auxiliary jig 10 from the side wall 12 in the width direction.

As shown in FIGS. 2 to 4, of the bottom wall 13, the restriction support portion 10A is formed with a restriction groove portion 10Ag (an example of a recess) into which the protrusion Sa of the sealing material S is fitted, and the guide support portion 10B is provided with a restriction groove portion 10Ag (an example of a recess). A guide groove portion 10Bg (an example of a concave portion) into which the convex portion Sa of the sealing material S is fitted is formed. Further, the restriction groove portion 10Ag has a friction surface by forming a large number of fine protrusions on the surface.

By forming the regulating groove portion 10Ag on the friction surface in this manner, the regulating support portion 10A can determine the position of the sealing material S in the width direction and the thickness direction only by applying a slight pressure to the sealing material S. In this state, the movement of the sealing material S in the longitudinal direction is prevented. Further, in the guide support portion 10B, the movement in the longitudinal direction is allowed while the position of the sealing material S in the width direction and the thickness direction is determined.

[Auxiliary jig for sealing edge adhesion: injection part, discharge guide part, etc.]
As shown in FIGS. 2 to 4, the injection section 10C has a shape in which a region extending from the boundary position between the regulation support section 10A and the guide support section 10B to the side wall 12 continuing from the boundary position of the pair of upper walls 11 is removed. , is formed as an injection opening 15 communicating with the inner space of the auxiliary jig 10 .

The ejection guide portion 10D is formed as a concave portion 16 in the bottom wall 13 between the regulation groove portion 10Ag and the guide groove portion 10Bg (the boundary position between the regulation support portion 10A and the guide support portion 10B).

Further, a reinforcing rib 18 is formed in a region extending from the outer surface of the pair of side walls 12 of the regulation support portion 10A and the guide support portion 10B to the bottom wall 13. As shown in FIG.

[Method of adhering sealing material]
Due to the configuration of the auxiliary jig 10 described above, when the end portions of the sealing material S are adhered with the adhesive B to form the annular seal CS, as shown in FIG. Cut the sealing material S to a short dimension.

As shown in FIG. 1, the sealing material S cut in this manner is deformed into a circular shape in a region surrounding the outer periphery of the water pipe 1 (as if wrapped around the water pipe 1). Then, as shown in FIG. 4, both ends of the sealing material S are supported by the auxiliary jig 10, and the adhesive B is injected from the adhesive container 19 to bond the ends of the sealing material S together.

That is, when using the auxiliary jig 10 to bond the ends of the sealing material S with the adhesive B, one end of the sealing material S is attached to one side of the auxiliary jig 10 as shown in FIG. The other end of the sealing material S is inserted into the guide support 10B of the auxiliary jig 10 from the other end of the auxiliary jig 10. It will be.

FIG. 5 shows a cross section of the regulating support portion 10A and the sealing material S inserted into this regulating support portion 10A. The outer surface of the sealing material S is brought into close contact, and the position of the sealing material S in the width direction and the thickness direction is determined. In the guide support portion 10B as well, the positions of the sealing material S in the width direction and the thickness direction are similarly determined.

Further, when both ends of the sealing material S are inserted into the auxiliary jig 10, a slight gap is formed between the ends of the sealing material S, and the position of this gap is adjusted to a position exposed from the injection part 10C. . Then, as shown in FIG. 4, with the upper wall 11 of the auxiliary jig 10 directed upward, the adhesive B is injected from the adhesive container 19 through the injection portion 10C (injection opening 15). When bonding the sealing material S with the adhesive B, the upper wall 11 of the auxiliary jig 10 does not necessarily have to face upward. It is also possible to In this way, the auxiliary jig 10 can be used in any desired posture.

When the adhesive B is injected in this way, if the injected adhesive B overflows the outer periphery of the sealing material S, the adhesive B flows into the concave portion 16 of the discharge guide portion 10D, can be discharged to In particular, since the concave portion 16 is formed at a position spaced apart from the outer surface of the sealing material S, the adhesive B prevents the outer surface of the sealing material S from adhering to the inner surface of the auxiliary jig 10 .

In this state, immediately after the adhesive B is injected, for example, an operator's finger or the like is inserted through the gap between the pair of upper walls 11 of the regulation support portion 10A to apply a pressing force to the seal member S, so that the regulation groove portion is opened. A sealing material S is pressed against 10Ag. At the same time, an appropriate pressure is applied to the sealing material S so that the end (one end) of the sealing material S supported by the guide support portion 10B is brought into contact with the other end of the sealing material S. .

As a result, with the ends of the sealing material S being determined at optimum positions, the adhesive B in the gap between the ends can be adhered under pressure.

After this adhesion is completed, the sealing material S is elastically deformed so as to be twisted, and the auxiliary jig 10 is removed in such a manner that the sealing material S is pulled out from between the pair of upper walls 11 . As a result, an annular seal CS is completed in which the ends of the sealing material S are adhered without a step.

As shown in FIGS. 7 to 9, the reinforcing metal fitting 5 is formed by molding a strip-shaped steel material into a semicircular shape, and has sandwiching walls 6 at positions sandwiching the outer surface of the flange portion 2 at both end portions in the width direction. The holding wall 6 is provided with a plurality of guide projections 6a projecting toward the center of the flange portion 2. As shown in FIG. The pair of clamping walls 6 are arranged at an interval slightly wider than the sealing width W of the sealing material S. As shown in FIG.

Fitting protrusions 5 a are formed at both ends of the reinforcing metal fitting 5 in the circumferential direction. The fitting projections 5a have a structure that interlocks with each other in order to properly maintain the positions of the two reinforcing metal fittings 5. As shown in FIG. In addition, outwardly projecting connection plates 7 are provided at both ends of the reinforcing metal fittings 5 in a posture of projecting outwardly. The connecting plate 7 is formed with a plurality of bolt insertion holes 7a.

Since the reinforcing metal fitting 5 is configured in this way, in the water leakage prevention work of the flange portion 2 of the water pipe 1, the sealing surface having the plurality of convex portions Sa is in a posture of contacting the outer periphery of the flange portion 2. This annular seal CS is mounted on the flange portion 2 . As described above, since the annular seal CS is formed of the sealing material S slightly shorter than the outer peripheral length of the flange portion 2, the annular seal CS is attached to the outer periphery of the flange portion 2, and the inner periphery of the annular seal CS and the A gap is not formed between the outer circumference of the flange portion 2 and the flange portion 2 .

Next, as shown in FIG. 7, the two reinforcing metal fittings 5 are arranged at a position to embrace the sealing material S, and as shown in FIG. A fastening bolt 8 is inserted through the fastening bolt 8, a nut 8a is screwed onto the fastening bolt 8, and the fastening bolt 8 and the nut 8a are operated to hold the annular seal CS by two reinforcing metal fittings 5, thereby tightening the annular seal CS. This annular seal CS is fixed in a state in which pressure is applied to CS, and prevention of water leakage is realized.

[Action and effect of the embodiment]
In this manner, the sealing material S is deformed into a circular shape, the relative positional relationship between the ends of the sealing material S is determined by the auxiliary jig 10, and the adhesive B is applied to the sealing material with the positional relationship determined in this way. Since the ends of S can be glued together with the adhesive B, it is possible to create an annular seal CS in which the ends are joined together with high accuracy.

Also, even if the adhesive B overflows from the gap between the ends of the sealing material S during bonding, the overflowing adhesive B is discharged from the concave portion 16 of the discharge guide portion 10D to the outside of the auxiliary jig 10. Therefore, for example, there is no problem that the seal material S adheres to the inner surface of the auxiliary jig 10 due to the overflowing adhesive B.

Furthermore, by mounting the annular seal CS on the outer surface of the flange portion 2 and crimping it to the outer peripheral surface of the flange portion 2 with the reinforcing metal fitting 5, it is possible to effectively prevent water leakage from the clearance of the flange portion 2. Become.

[Another embodiment]
The present invention may be configured as follows other than the above-described embodiments (components having the same functions as those of the embodiments are given the same numbers and symbols as those of the embodiments).

(a) As shown in FIGS. 10 to 12, this alternative embodiment (a) has a pair of upper walls 11 and a pair of side walls 12, similar to the auxiliary jig 10 having the configuration described in the above embodiment. and a single bottom wall 13 . Also in this alternative embodiment (a), the material of the auxiliary jig 10 may be either resin or metal. In this alternative embodiment (a), a single auxiliary jig 10 is used to determine the positional relationship between the ends of the sealing material S for bonding. Then, the bonding is performed by determining the positional relationship between the ends of the sealing material S by combining the auxiliary jig 10 and the holder 30 (see FIG. 13).

In the auxiliary jig 10 of this alternative embodiment (a), a regulating support portion 10A is formed at one end in the longitudinal direction, and a guide support portion 10B is formed at the other end in the longitudinal direction. Further, an injection portion 10C and a discharge guide portion 10D are formed at the boundary between the regulation support portion 10A and the guide support portion 10B to allow injection of the adhesive B. As shown in FIG. Furthermore, in the auxiliary jig 10 of this alternative embodiment (a), a plurality of reinforcing ribs 18 are formed on the outer surface of the bottom wall 13 .

In this alternative embodiment (a), a friction portion 13a (an example of a friction surface) is formed by roughening the inner surface of the bottom wall 13 of the regulation support portion 10A. The inner surfaces of the bottom wall 13, the pair of side walls 12, and the pair of upper walls 11 of the guide support portion 10B are formed smoothly. That is, the restriction groove portion 10Ag and the guide groove portion 10Bg described in the above embodiment are not provided, and the restriction support portion 10A and the guide support portion 10B are formed on smooth inner surfaces.

The injection part 10C has a shape in which an area extending from the boundary position between the regulation support part 10A and the guide support part 10B to the side wall 12 continuing therefrom is removed from the pair of upper walls 11, and communicates with the internal space of the auxiliary jig 10. It is formed as an injection opening 15 that Further, in this configuration, a portion of the injection opening 15 near the bottom wall 13 forms a discharge guide portion 10D.

The method of adhering the sealing material S using the auxiliary jig 10 of this alternative embodiment (a) can be performed in the same manner as described in the above embodiment.

That is, in a state where the relative positional relationship between the ends of the sealing material S is determined by the auxiliary jig 10, the ends of the sealing material S are adhered to each other with high precision using the adhesive B to form the annular seal CS. can be created. Further, even if the adhesive B overflows from the gap between the ends of the sealing material S during adhesion, the overflowed adhesive B flows into the discharge guide portion 10D. Inconvenience caused by adhesion of the sealing material S to the inner surface of the tool 10 is also avoided.

(b) As shown in FIGS. 13 to 16, a holder 30 is constructed as an example of a cover portion that is mounted at a position that covers the auxiliary jig 10 . The holder 30 of this alternative embodiment (b) is mounted on the auxiliary jig 10 configured as shown in FIGS. 10 to 12 as another embodiment (a). The holder 30 may be configured to be attached to the auxiliary jig 10 having the configuration shown in FIGS. 2 and 3 as the embodiment described above.

A holder 30 of this alternative embodiment (b) has an upper cover 31 , a pair of lateral covers 32 , and a pair of bottom covers 33 connected to the lateral covers 32 . The top cover 31 and the bottom cover 33 are arranged at positions opposed to each other in the vertical direction. An upper open portion 34 is formed in the upper cover 31 , and a lower open portion 35 is formed in the pair of bottom covers 33 . In addition, the outer surface of the upper cover 31 is provided with external ribs 38. By forming the external ribs 38 in this manner, the upper cover 31 will not remain intact even if an external force is applied when the ends of the sealing material S are adhered to each other. It is configured to be able to suppress the deformation of

In particular, a plurality of friction projections 36 are formed on the inner surface of the upper cover 31 of the holder 30 at a portion corresponding to the regulation support portion 10A when attached to the auxiliary jig 10 . In addition, a guide portion 34 a is formed in the upper open portion 34 so as to be inclined so as to guide the adhesive B to the injection opening 15 . The material of the holder 30 may be either resin or metal.

As shown in FIGS. 15 and 16, the holder 30 holds the sealing material S on the auxiliary jig 10, and the outer surfaces of the upper wall 11, the side wall 12, and the bottom wall 13 of the auxiliary jig 10 are A top cover 31, a side cover 32, and a bottom cover 33 are mounted so as to cover them.

When the holder 30 is attached to the auxiliary jig 10 in this manner, the upper open portion 34 is arranged at a position exposing the injection opening 15, and the friction projection 36 is arranged at a position facing the friction portion 13a.

From such a configuration, in the method of bonding the sealing material S using the holder 30 of this alternative embodiment (b), the relative positional relationship between the ends of the sealing material S is assisted as shown in FIG. The holder 30 is attached to the outer surface of the auxiliary jig 10 in a state determined by the jig 10 .

In this mounting state, the frictional portion 13a of the bottom wall 13 of the auxiliary jig 10 and the frictional projection 36 of the inner surface of the upper cover 31 of the holder 30 sandwich the sealing material S. As shown in FIG. In this state, bonding is achieved by injecting the adhesive B from the adhesive container 19 into the injection opening 15 exposed inside the upper open portion 34 . In this alternative embodiment (b), the friction portion 13a and the friction protrusion 36 sandwich the sealing material S. As shown in FIG. As such a configuration, a configuration in which the auxiliary jig 10 does not include the friction portion 13a or a configuration in which the holding member 30 does not include the friction projection 36 may be employed.

This bonding makes it possible to bond the ends of the sealing material S together with the adhesive B with high precision to create the annular seal CS. In addition, even if the adhesive B overflows from the gap between the ends of the sealing material S during adhesion, the overflowed adhesive B can flow into the discharge guide portion 10D. The inconvenience of adhering the sealing material S to the inner surface of the edge adhering aid 10 is also avoided.

Furthermore, as a modification of this alternative embodiment (b), it has a single top wall 11, has a pair of side walls 12 connected thereto, and has a pair of bottom walls 13 projecting inward from the pair of side walls 12. The auxiliary jig 10 is configured with Although the configuration of this modification is not shown in the drawings, only the injection opening 15 is open to the upper wall 11 .

Even in the auxiliary jig 10 configured as in this modified example, both ends of the sealing material S are inserted into the interior, and the adhesive B is injected from the injection opening 15, whereby the ends of the sealing material S are aligned with high precision. , it is possible to create the annular seal CS by bonding with the adhesive B.

(c) As shown in FIGS. 17 to 19, the auxiliary jig 10 of this alternative embodiment (c) is a member having a pair of upper walls 11, a pair of side walls 12, and a single bottom wall 13. It is constructed by using two (materials) and connecting them with a hinge 22 . The auxiliary jig 10 is configured to be switchable between the closed posture shown in FIGS. 17 and 19 and the open posture shown in FIG. The materials of the two members forming the auxiliary jig 10 may be either resin or metal.

In the auxiliary jig 10 of this alternative embodiment (c), the swing support shaft 22a of the hinge 22 is arranged outside the outer wall of the bottom wall 13 of each of the two members. One member constitutes the regulation support portion 10A, and the other member constitutes the guide support portion 10B.

The regulation support portion 10A has a friction portion 13a formed by roughening the inner surface of the bottom wall 13. As shown in FIG. The inner surfaces of the bottom wall 13, the pair of side walls 12, and the pair of upper walls 11 of the guide support portion 10B are formed smoothly. In this alternative embodiment (c), the friction portion 13a is formed, but as indicated by the two-dot chain line in FIG. When the ends are bonded together, the sealing material S is sandwiched between the friction projections 36 formed on the holder 30 and the friction portion 13a. As such a configuration, the auxiliary jig 10 may be configured so as not to include the friction portion 13a.

The injection part 10C is composed of an injection opening 15 formed at the boundary between the regulation support part 10A and the guide support part 10B when the two members constituting the auxiliary jig 10 are closed. In this configuration, one half of the opening is formed in one of the two members forming the auxiliary jig 10, and the other half of the opening is formed in the other of the two members. Further, in this configuration, a portion of the injection opening 15 near the bottom wall 13 forms a discharge guide portion 10D.

Further, in the auxiliary jig 10 of this alternative embodiment (c), when inserting the ends of the sealing material S into the regulation support portion 10A and the guide support portion 10B, for example, the protrusion Sa of the sealing material S , or in the opposite direction. The method of adhering the sealing material S using the auxiliary jig 10 of this alternative embodiment (c) can be performed in the same manner as described in the above embodiment.

That is, as a method of adhering the sealing material S using the auxiliary jig 10 shown in this alternative embodiment (c), for example, one end of the sealing material S is held while the auxiliary jig 10 is set in the open posture. It is inserted into the regulation support portion 10A, and the other end of the sealing material S is inserted into the guide support portion 10B. After this, it is possible to switch the auxiliary jig 10 to the closed position and inject the adhesive B into the gaps between the ends.

As a result, while the relative positional relationship between the ends of the sealing material S is determined by the auxiliary jig 10 in the closed posture, the ends of the sealing material S are glued together with the adhesive B with high accuracy. It is possible to bond with B to create an annular seal CS. Further, even if the adhesive B overflows from the gap between the ends of the sealing material S during bonding, the overflowed adhesive B flows outside from the discharge guide portion 10D. Inconvenience caused by adhesion of the sealing material S to the inner surface of the auxiliary jig 10 is also avoided.

In particular, in this alternative embodiment (c), as indicated by a two-dot chain line in FIG. you can go By mounting the holder 30 in this way, it becomes possible to maintain the two members that constitute the auxiliary jig 10 in the closed position, thereby realizing stable work.

(d) The regulating support portion 10A is configured with a pressing mechanism using a spring material so as to apply pressure to the end portion of the sealing material S to regulate the movement of the sealing material S in the longitudinal direction.

The pressing mechanism uses, for example, a spring wire, and one end of the spring wire is supported by the upper wall 11 and the side wall 12 of the auxiliary jig 10, and the other end of the spring wire is used as a pressing portion to contact the outer surface of the sealing member S. It is assumed that it is placed at a position where the pressing force is applied. That is, in this pressing mechanism, for example, the sealing material S is inserted into the auxiliary jig 10 in a state in which the pressing portion is artificially lifted away from the bottom wall 13, and the artificial operating force is released. By sandwiching the sealing material S between the pressing portion and the bottom wall 13 by force, the position of the sealing material S can be held without applying an artificial pressing force to the sealing material S.

It is not necessary to provide two sets of pressing mechanisms configured in this way so as to correspond to both ends of the sealing material S to be inserted into the auxiliary jig 10, but only one set to support only one end side of the sealing material S. It is conceivable to prepare. Further, since the biasing force of the pressing mechanism is sufficient to hold the sealing material S, it can be set to a relatively small value.

In this alternative embodiment (d), by providing a pressing mechanism, it is possible to hold the end portion of the sealing material S without continuously applying pressure to the sealing material S, thus facilitating the work. Further, the configuration including the pressing mechanism made of the spring material as described above may be provided together with the friction surface described in the above embodiment, the friction portion 13a described in another embodiment (b), and the like.

(e) The holder 30 (an example of the cover portion) is not limited to the configuration described in the other embodiment (b), and functions as a cover to determine the position of the sealing material S inserted into the auxiliary jig 10. Anything you have is fine. Further, the holder 30 (an example of the cover portion) is configured to be attached to the auxiliary jig 10 described in the other embodiments (a) and (c) or the auxiliary jig 10 described in the embodiment. Is possible.

In particular, when the holder 30 is attached to the auxiliary jig 10 as in this alternative embodiment (e), the friction protrusions 36 for applying a frictional force for holding the sealing material S in the holder 30 and the auxiliary A frictional force may be applied to the jig 10 to hold the sealing member S, and only one of the frictional portions 13a may be used.

INDUSTRIAL APPLICABILITY The present invention can be used for a seal end adhesion auxiliary jig for forming an annular seal mounted on the outer periphery of a flange portion by adhering the end of a seal material, and a method for adhering the seal material. .

1 Water pipe (pipe line)
2 Flange portion 10 Seal end adhesion auxiliary jig 10A Regulating support portion 10Ag Regulating groove portion (recess)
10B guide support portion 10Bg guide groove portion (recess)
10C injection part 10D discharge guide part 12 side wall 13 bottom wall 13a friction part (friction surface)
14 regulation protrusion (friction surface)
30 holder (cover part)
B Adhesive CS Annular seal S Sealing material Sa Convex part

Claims (5)

In order to form an annular seal attached to the outer periphery of a pair of connected flange portions, the ends of the sealing material are adhered with an adhesive while the flexible belt-shaped sealing material is deformed into a circular shape. A seal edge adhesion auxiliary jig that assists,
a regulating support for restricting one end of the sealing material from moving in the longitudinal direction while positioning the sealing material in the width direction and the thickness direction;
a guide support part that allows the other end of the sealing material to move in the longitudinal direction while the positions of the sealing material in the width direction and the thickness direction are determined;
An injection portion is formed at a boundary position between the regulation support portion and the guide support portion to enable injection of an adhesive into a gap between ends of the sealing material,
The regulation support portion and the guide support portion each include a pair of side walls that sandwich the sealing material in the width direction, and an upper wall that extends inward in the width direction from the pair of side walls so as to sandwich the sealing material in the thickness direction. a bottom wall and
A seal end adhesion assisting jig having a discharge guide portion for allowing flow of the adhesive, which is injected from the injection portion, to the outside from a gap between the ends of the sealing material. A plurality of projections are formed along the longitudinal direction on one side of the sealing material in the thickness direction,
2. A seal end according to claim 1 , wherein a recess into which said protrusion is fitted is formed in said regulation support portion and said guide support portion, and said sealing material is guided in a state in which said protrusion is fitted into said recess. Parts bonding aid. 3. The seal end adhesion assisting jig according to claim 1 , wherein the regulation support portion has a friction surface that regulates longitudinal movement of the seal material by coming into contact with an outer surface of the seal material. . 4. The jig for assisting seal edge bonding according to any one of claims 1 to 3 , further comprising a cover portion that covers the surface of the seal material across the regulation support portion and the guide support portion. A sealing material bonding method using the seal edge bonding auxiliary jig according to any one of claims 1 to 4 ,
deforming the sealing material into a circular shape in a region surrounding the outer periphery of the pipeline in which the flange portion is formed, and supporting one end of the sealing material on the regulation support portion of the seal end adhesion auxiliary jig; The other end of the seal material is supported by the guide support portion of the seal end adhesion auxiliary jig, an adhesive is injected into the gap between the end portions of the seal material, and the seal material is supported by the guide support portion. By applying an external force to the other end of the sealing edge, the other end is crimped to the one end for bonding, and after the bonding is completed, the seal edge bonding auxiliary jig is removed. A sealing material bonding method using an auxiliary jig.

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