JP2007002442A - Injection nozzle for pinning method, and pinning method using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an injection nozzle for a pinning method, which enables an adhesive to be sufficiently injected into a plurality of "lifted places", even if the plurality of "lifted sites" appear between a skeleton and a finishing material, and the pinning method using the injection nozzle. <P>SOLUTION: The injection nozzle 12 for the pinning method is used for injecting the adhesive R into an inserting and filling hole 5, drilled to a predetermined depth in a concrete skeleton 2 in such a manner as to penetrate the finishing material 3, while sealing an opening of the hole 5. The injection nozzle comprises: a nozzle body 26 which is mounted in an injector body 11, and inside which an adhesive channel 49 communicating with the injector body 11 is provided; and a nozzle cylinder 21, the base end of which is held by the nozzle body 26, the leading end of which has a main ejection port 41, and inside which an injection channel 37 for making the adhesive channel 49 communicate with the port 41 is provided. An peripheral surface of the nozzle cylinder 21 is provided with one or more auxiliary ejection ports 50 which communicate with the injection channel 37. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an injection nozzle for a pinning method used for repairing a wall body such as an outer wall or an inner wall in which so-called “floating” has occurred, and a pinning method using the same.

  Conventionally, as an injection nozzle for injecting a resin (adhesive) used in this type of pinning method, a nozzle body (body body) having a resin flow channel at its center and a base end portion are held by the nozzle body, There has been known one provided with a nozzle needle (nozzle tube) in which an injection flow channel that communicates a resin flow channel and a discharge port at the tip is formed (see Patent Document 1).

In this pinning method using an injection nozzle, an insertion hole is drilled to a predetermined depth, penetrating the finishing material and penetrating the housing at a required repair location on the outer wall consisting of the finishing material and the housing (concrete housing). An injection nozzle attached to the resin injector is inserted into the filling hole, and the resin injector is operated (pumping) while sealing the opening, and the resin is gradually filled from the deepest part of the insertion hole. Furthermore, by repeating the pumping, the resin is distributed to the floating portion between the housing and the mortar. When the resin injection is completed, the injection nozzle is pulled out, and then the anchor pin is inserted into the insertion hole.
JP 2003-147971 A

  However, when the finishing material is made of a decorative material such as a tile and mortar, “floating” may occur not only between the casing and the mortar but also between the decorative material and the mortar. In such a case, in such a conventional injection nozzle, since the resin is injected from the deepest part of the insertion hole, the resin first spreads only in the “floating” between the concrete frame and the mortar, and the mortar There was a problem that the resin did not reach the “float” between the mortar and the decorative material, and the resin could not be sufficiently distributed to the “float” between the mortar and the decorative material. In addition, when the decorative material is re-applied, “floating” occurs between the existing mortar and the mortar at the time of re-attaching, and the resin cannot be sufficiently distributed to this “floating”. There was a problem.

  Accordingly, the present invention provides an injection nozzle for a pinning method capable of sufficiently injecting an adhesive even when a plurality of “floats” occur in the depth direction of the insertion hole, and a pinning method using the same It is an issue to provide.

  The injection nozzle for the pinning method of the present invention is used by being mounted on the injector body, and is bonded to the insertion hole that penetrates the finishing material and is drilled to a predetermined depth of the casing while sealing the opening. In an injection nozzle for a pinning method for injecting an agent, a nozzle body which is attached to the injector body and has an adhesive flow path communicating with the injector body inside, and held at the nozzle body at the base end, A nozzle cylinder having a main discharge port in the part and an injection flow channel communicating the adhesive flow channel and the main discharge port inside, and a peripheral surface of the nozzle tube is in communication with the injection flow channel 1 The above-described sub discharge port is provided.

  According to this configuration, when the adhesive is injected from the nozzle cylinder into the insertion hole while the opening of the insertion hole is sealed by the nozzle body, the adhesive is discharged from the main discharge port of the nozzle cylinder. At the same time, it is discharged from the sub discharge port. That is, the adhesive is simultaneously filled from the deepest portion in the depth direction of the insertion hole and the portion other than the deepest portion. For this reason, it is possible to reliably inject the adhesive not only to the floating portion (“floating”) between the housing and the mortar but also to a plurality of floating portions such as between the mortar and the decorative material.

  In this case, the finishing material is composed of a decorative material and a mortar for adhering the decorative material to the housing. On the peripheral surface of the nozzle cylinder, when the adhesive is injected, the boundary between the decorative material and the mortar and the mortar and the housing are formed. It is preferable that at least two sub discharge ports are formed so as to face the boundary portion.

  According to this configuration, the adhesive is injected into the floating portion between the housing and the mortar by the secondary discharge port provided so as to face the boundary portion between the housing and the mortar, and at the same time, the mortar and the decorative material. It is injected into the floating part between the mortar and the decorative material by the sub-discharge port provided so as to face the boundary part. That is, the adhesive can be reliably spread to the floating portion between the casing and the mortar and the floating portion between the mortar and the decorative material simultaneously with the filling of the adhesive into the deepest portion by the main discharge port. .

  Similarly, it is preferable that a plurality of sub discharge ports are formed on the peripheral surface of the nozzle cylinder so as to be equally spaced in the axial direction.

  According to this configuration, the adhesive discharged from the main discharge port is injected from the deepest portion of the insertion hole. At the same time, the adhesive discharged from the plurality of sub discharge ports is injected into the shallow portion, the middle portion, and the deep portion of the insertion hole. Therefore, the adhesive can be reliably injected into a plurality of floating portions such as between the casing and the mortar or between the mortar and the decorative material.

  In these cases, it is preferable that a plurality of sub-ejection ports are formed in the circumferential direction at each location where the sub-ejection ports are formed in the nozzle cylinder.

  According to this configuration, since the adhesive is discharged not only in one direction but also in multiple directions at each formation location of the sub discharge port, the adhesive can be distributed evenly in the circumferential direction of each floating portion.

  In these cases, it is preferable that each sub discharge port is configured so that the discharge resistance of the adhesive is larger than the discharge resistance of the adhesive at the main discharge port in the initial stage of injection of the adhesive.

  According to this configuration, when the adhesive is injected, the adhesive is first discharged from the main discharge port on the tip side and gradually filled from the deepest portion of the insertion hole. When the discharge resistance on the main discharge port side is increased by the adhesive injected into the deepest portion, the adhesive is also discharged from the sub discharge port. Therefore, air is not confined in the deepest part of the insertion hole, and the adhesive can be sufficiently and efficiently distributed to each part of the insertion hole including the plurality of floating parts.

  In these cases, the nozzle body comprises a body main body that holds the injection cylinder and seals the opening of the insertion hole on the outer peripheral surface, and a mounting bracket for mounting the body main body to the injector main body. The main body is preferably composed of either fluororubber or butyl rubber.

  According to this configuration, when the nozzle body is pressed against the opening of the insertion hole, the outer peripheral surface of the body main body is brought into close contact with it and appropriately deformed due to the elastic characteristics of fluororubber or butyl rubber, and the opening is securely sealed. To do. By this sealing, the return of the adhesive from the insertion hole is prevented, and the adhesive can be filled without excess or deficiency. Moreover, since fluororubber and butyl rubber are solvent resistant, deterioration over time due to the adhesive can be prevented.

  The pinning method of the present invention is a pinning method for repairing a wall made of a casing and a finishing material using an adhesive injector comprising the above injection nozzle and an injector main body to which the injection nozzle is detachably mounted. A punching process that penetrates the finishing material and drills the housing to a predetermined depth to form an insertion hole, and injects adhesive into the insertion hole while sealing the opening of the insertion hole with an adhesive injector. And a pin insertion step of inserting an anchor pin into the insertion hole into which the adhesive has been injected.

  According to this configuration, since the injection nozzle having the nozzle cylinder provided with the main discharge port and the sub discharge port is used, the adhesive is used as a floating portion between the casing and the mortar and a floating portion between the mortar and the decoration material. It is possible to sufficiently spread to a plurality of floating parts such as.

  As described above, according to the present invention, even if a plurality of “floats” occur in the depth direction of the insertion hole by providing the sub discharge port in the nozzle cylinder, the adhesive is sufficiently injected into this. can do. Therefore, regardless of the position and form of the “floating”, the wall body in which this occurs can be completely repaired.

  Hereinafter, an injection nozzle for a pinning method according to an embodiment of the present invention and a pinning method using the same will be described with reference to the accompanying drawings. In this pinning method, the adhesive is injected by inserting the injection nozzle of the adhesive injector from the opening into the insertion hole drilled in the repair required part such as the outer wall or inner wall of the building where `` floating '' occurred, After that, the anchor pin is inserted and repaired. Hereinafter, the case where it constructs on the outer wall of a building is demonstrated.

  FIG. 1 is a schematic view of a construction state in which the resin injector 10 is used with respect to the outer wall. As shown in the figure, an outer wall 1 of a building is composed of a concrete frame 2, a mortar 7 applied to the surface thereof, and a decorative material 8 made of tiles, stones, or the like attached thereto. In this case, it is assumed that a first floating portion (gap) 5 is generated between the concrete housing 2 and the mortar 7, and a second floating portion 6 is generated between the mortar 7 and the decorative material 8. An insertion hole 5 that penetrates the finishing material 3 (decorative material 8 and mortar 7) and that perforates the concrete casing 2 to a predetermined depth is formed in the repair required portion of the outer wall 1. Then, the adhesive R is injected by the adhesive injector 10 and the anchor pin 70 is inserted into the insertion hole 5 to complete the repair of the outer wall 1.

  In the present invention, as shown in FIG. 10 (c), the finishing material 3 is composed only of the mortar 7, and the outer wall in which the mortar 7 is coated on the surface of the concrete frame 2, or the outer wall or tile (not shown). It is also applicable to outer walls where mortar is doubled by re-stretching.

  As shown in FIG. 2, the resin injector 10 includes a pump-type injector main body 11 that supplies an adhesive R, and an injection nozzle 12 that is detachably attached to the injector main body 11. The injector main body 11 includes a pump main body 17 having an injection nozzle 12 detachably attached to the tip, and a cylindrical casing 16 attached to the rear end of the pump main body 17. Further, a substantially “L” -shaped lever 18 for operating the pump is attached to the side of the pump body 17, and the inside of the casing 16 is filled with an adhesive R. Then, by holding the injector body 11 and operating (pumping) the lever 18, the adhesive R is discharged from the injection nozzle 12 by a certain amount. As the adhesive R, an epoxy resin generally used in the pinning method is used here, but any adhesive having the function of an adhesive may be used. For example, an inorganic adhesive may be used.

  As shown in FIGS. 3 and 4, the injection nozzle 12 includes a nozzle body 26 connected to the pump body 17 and an injection needle-like nozzle cylinder 21 attached to the tip of the nozzle body 26. . The nozzle body 26 includes a body body 22 on the distal end side that holds the nozzle cylinder 21 and a mounting fitting 28 on the proximal end side for attaching the nozzle body 26 to the injector body 11. The body main body 22 is integrally composed of a small cylinder 32 provided with a tapered portion 31 for sealing the opening of the insertion hole 5 on the front end side, and a large cylinder 33 continuous to the rear end thereof. The small cylindrical body 32 and the large cylindrical body 33 have through-holes that are continuously penetrated through the inner axis. In this case, the body main body 22 is integrally formed of, for example, fluorine rubber or butyl rubber in consideration of the solvent resistance to the adhesive R and the sealing performance to the opening. The large cylinder 33 is provided with a mounting recess 36 connected to a joint member 23 of the mounting bracket 28 to be described later, and a washer 35 functioning as a retaining member is provided at the groove bottom of the mounting recess 36. It is attached.

  The mounting bracket 28 includes a joint member 23 that is connected (contacted) to the rear portion of the large cylinder 33 of the body main body 22 and a fastening member 24 that connects the body main body 22 and the joint member 23 so as to be in close contact with each other. The joint member 23 includes a nozzle connecting portion 46 inserted into the mounting recess 36 of the large cylindrical body 33, an intermediate fastening male screw portion 47 continuous on the tail end side of the nozzle connecting portion 46, and the fastening male screw portion 47. And a pump-side male thread portion 48 extending to the 11th side. The joint member 23 is integrally formed of stainless steel or the like, and an adhesive flow path 49 that allows the nozzle cylinder 21 to be slidable and serves as a flow path for the adhesive R is formed in the shaft center. The pump-side male screw portion 48 is screwed into a female screw portion (not shown) formed in the pump main body 17 of the injector main body 11 so that the injection nozzle 12 is detachably attached to the injector main body 11. Reference numeral 59 in the drawing (FIG. 4C) denotes a tool engaging portion for screwing the joint member 23.

  The nozzle connecting portion 46 is a cylindrical convex portion that matches the inner diameter of the mounting recess 36 of the body main body 22, and extends with a predetermined length corresponding to the depth of the mounting recess 36. The body main body 22 and the joint member 23 are temporarily connected by inserting the nozzle connecting portion 46 into the mounting recess 36 and bringing the tip of the nozzle connecting portion 46 into contact with the bottom of the mounting recess 36.

  The fastening male screw portion 47 is formed to have a slightly larger diameter than the outer diameter of the large cylindrical body 33 of the body main body 22 and is screwed into a fastening female screw portion 53 (described later) of the fastening member 24. The fastening member 24 is fixed to the joint member 23 by the screwing of the fastening male screw portion 47 and the fastening female screw portion 53, and the large cylindrical body 33 is attracted by this fastening force and is in close contact with the nozzle connecting portion 46. Thereby, the body main body 22 and the joint member 23 are liquid-tightly connected.

  The fastening member 24 is made of a metal such as steel, and is formed corresponding to the fastening side small cylindrical portion 51 formed corresponding to the outer diameter of the small cylindrical body 32 of the body main body 22 and the outer diameter of the large cylindrical body 33. The fastening side large cylindrical portion 52 is integrally formed. A fastening female screw portion 53 that is screwed into the fastening male screw portion 47 is formed in the latter half of the fastening-side large cylindrical portion 52.

  The nozzle cylinder 21 is made of metal such as stainless steel, and is slidably held in the body body 22 (through hole 34), and also functions as a core material of the body body 22 that is an elastic material. The nozzle cylinder 21 has a main discharge port 41 formed at the tip portion, a plurality of sub discharge ports 50 on the peripheral surface, and a regulating portion 42 formed to expand in a funnel shape at the tail end portion. A continuous internal injection channel 37 communicates with the adhesive channel 49 of the joint member 23.

  The restricting portion 42 is formed so as to expand in a funnel shape toward the tail end, so that sliding of the nozzle cylinder 21 toward the front of the body main body 22 (washer 35) is restricted. That is, the restricting portion 42 contacts the bottom of the mounting recess 36 (washer 35) so that the nozzle cylinder 21 does not fall off from the front end side of the body main body 22. Further, the restricting portion 42 smoothly guides the adhesive R flowing from the joint member 23 inserted into the body main body 22 into the nozzle cylinder 21 and increases the area on which the injection is applied to the nozzle cylinder 21. The nozzle cylinder 21 receives the injection input (flow resistance) of the adhesive R to facilitate the advancement from the body main body 22.

  The main discharge port 41 is formed into an opening having an elliptical cross section by cutting the pipe material obliquely, and is blocked even when the tip of the nozzle cylinder 21 is in contact with the deepest portion of the insertion hole 5. Therefore, the adhesive R can be smoothly injected. In this case, it is preferable to use a pipe material having a diameter of about 3 mm to 5 mm, although it depends on the diameter of the insertion hole 5.

On the peripheral surface of the nozzle cylinder 21, a pair of sub-discharge ports 50 are formed in the axial direction of the nozzle cylinder 21 with an interval of length L ₁ (about 10 mm). That is, as shown in FIG. 5A, a pair of sub-discharge ports 50 are formed at a location where the sub-discharge port 50 is formed so as to face the radial direction of the nozzle cylinder 21, and the pair of sub-discharge ports 50. Are formed in a plurality of sets (four sets) at intervals in the axial direction. Thereby, since the adhesive R spreads uniformly and is injected into the peripheral surface of the insertion hole 5, injection unevenness can be prevented. In addition, although the sub discharge port 50 is circular in the drawing, it may be oval or the like.

  The nozzle cylinder 21 is formed in a straight shape having the same diameter from the base end to the tip end, that is, the whole. In the present embodiment, the nozzle cylinder 21 is formed such that the total volume of the adhesive R attached to the nozzle cylinder 21 pulled out from the insertion hole 5 substantially matches the volume of the anchor pin 70. Therefore, by changing the diameter of the straight nozzle cylinder 21, the volume of the nozzle cylinder 21 (the portion inserted into the insertion hole 5) can be adjusted accurately and easily, and the insertion holes 5 having various diameters can be adjusted. It is possible to easily correspond to the anchor pin 70. Further, each sub discharge port 50 is configured such that the discharge resistance of the adhesive R is larger than the discharge resistance of the adhesive at the main discharge port 41 in the initial stage of injection of the adhesive R. As a result, the adhesive R can first be injected and filled in the deepest part of the insertion hole 5, and then the adhesive R can be spread over the entire insertion hole 5 together with the discharge from the sub discharge port 50. Air accumulation can be prevented from occurring in the deepest portion of the filling hole 5.

  Further, as shown in FIG. 5 (b), a plurality of the sub-ejection ports 50 may be provided in the circumferential direction of the nozzle cylinder 21 at each formation location. The adhesive R can be uniformly spread on the surface. In this case, it is preferable to arrange the pair of two sub-discharge ports 50 facing each other in the radial direction while being slightly displaced in the axial direction.

  In such an injection nozzle 12, the flow path of the adhesive R is constituted by the adhesive flow path 49 of the joint member 23 connected to the pump body 17 and the injection flow path 37 inside the nozzle cylinder 21. Accordingly, the adhesive R flows from the injector main body 11 to the pump main body 17 and to the injection nozzle 12 by pumping of the lever 18, and from the adhesive flow path 49 of the joint member 23 connected to the pump main body 17 to the inside of the nozzle cylinder 21. It flows into the injection flow path 37 and is discharged from the main discharge port 41 and the sub discharge port 50 communicating therewith.

  Next, the anchor pin 70 will be described with reference to FIG. The anchor pin 70 is made of stainless steel or the like, and is composed of a rod-like pin body 72 and a disk-like pin head 71 fixed to the upper end of the pin body 72. The pin body 72 is formed to be somewhat smaller in diameter than the diameter of the insertion hole 5, and a male screw is threaded on the outer peripheral surface thereof in order to increase the pulling strength. The pin head 71 has a diameter larger than that of the opening of the insertion hole 5 and is thin, and is colored so that the upper end surface matches the color of the decorative material 8.

  When such an anchor pin 70 is inserted into the insertion hole 5, the pin body 72 is pushed into the deepest part of the insertion hole 5, and the concrete frame 2, the mortar 7, and the decoration material 8 are attached via the adhesive R Anchoring is performed, and the pin head 71 is closed so as to cover the opening of the insertion hole 5. At this time, since the pin head 71 is thin and colored so that the upper end surface is in harmony with the color of the decoration material 8, it is possible to make the trace after repair inconspicuous. That is, the anchor pin 70 prevents the adhesive R from overflowing from the insertion hole 5, and the adhesive body R solidifies in this state, so that the pin body 72 is fixed to the insertion hole 5 through the adhesive R. Is done. (See Fig. 7 (a))

  Further, a method of inserting the anchor pin 70 by chamfering the opening edge portion of the insertion hole 5 in a dish-like shape using a pin head 71 of the anchor pin 70 formed in a dish shape (FIG. 7B). )) Or a method of opening a counterbore having a diameter larger than that of the insertion hole 5 in the opening edge portion of the insertion hole 5 and inserting the anchor pin 70 (see FIG. 7C). By using these methods, the surface of the pin head 71 is flush with the surface of the decoration material 8 and the pin head 71 of the anchor pin 70 is colored to match the decoration material 8. After construction, the anchor pin 70 can be made extremely inconspicuous.

  Next, a pinning method for repairing the outer wall 1 using the above-described adhesive injector 10 will be described with reference to the process diagrams of FIGS. The pinning method includes a keying process for determining the drilling position (floating portion) of the insertion hole 5 by keying the outer wall 1, a drilling process for drilling the insertion hole 5 in the outer wall 1 at the drilling position, and an adhesive injector. 10 includes an adhesive injection step of injecting the adhesive R into the insertion hole 5 and a pin insertion step of inserting the anchor pin 70 into the insertion hole 5 into which the adhesive R has been injected.

  In the keying process, the surface of the finishing material 3 is struck with a hammer or the like, a repair point is inspected by the sound, the drilling position of the insertion hole 5 is determined, and then the drilling position is marked with tape or air spray. .

  In the drilling step, a drilling tool 75 such as a concrete drill is used to penetrate the decorative material 8 and the mortar 7 to the marked portion, and the concrete casing 2 is drilled to a predetermined depth to form the insertion hole 5. . At this time, the drilling is performed at a right angle to the outer wall 1 and the drilling depth to the concrete frame 2 is 30 mm or more. Further, the insertion hole 5 has a diameter that is one size larger so that the anchor pin 70 can be loosely fitted. Thereafter, in the case where chips or the like of the concrete housing 2 remain in the insertion hole 5, a removal step of cleaning the inside of the insertion hole 5 with an electric blower or the like is performed.

  In the adhesive injection step, the injection nozzle 12 is inserted into the insertion hole 5 until the taper portion 43 of the body main body 22 abuts and the insertion depth is regulated, and the taper portion 43 opens the opening portion of the insertion hole 5. Is sealed. At this time, the discharge port 35 of the nozzle cylinder 21 does not reach the deepest portion of the insertion hole 5. In this state, the opening of the insertion hole 5 is pressed by the taper portion 43, and the injector The lever 18 of the main body 11 is operated (pumping) to inject the adhesive R into the insertion hole 5.

  When pumping is started by the lever 18 of the injector body 11, the nozzle cylinder 21 slides and advances while the base end is held by the body body 22, and the tip of the nozzle cylinder 21 is inserted into the insertion hole 5. It stops at the deepest part of the road and stops moving forward. When the pumping is continued again, the adhesive R is discharged from the main discharge port 41, and the adhesive R is gradually injected from the deepest portion of the insertion hole 5. Eventually, it flows into the first floating portion 4 between the concrete housing 2 and the mortar 7, and at the same time, the adhesive R is also discharged from the sub discharge port 50, and along the axial direction of the insertion hole 5. It spreads and flows into the second floating portion 6 between the mortar 7 and the decorative material 8. At this time, air can be accumulated in the middle portion of the insertion hole, but air is released due to the negative pressure when the injection nozzle 12 is pulled out of the insertion hole 5. As described above, each of the sub discharge ports 50 is configured such that the discharge resistance of the adhesive R is larger than the discharge resistance of the adhesive at the main discharge port 41 in the initial stage of injection of the adhesive R. ing. Therefore, the adhesive R discharged from the main discharge port 41 first fills the deepest portion of the insertion hole 5 and then spreads to each floating portion together with the adhesive R discharged from each location of the sub discharge port 50. .

  In the pin insertion process, the insertion is performed while guiding the pin body 72 of the anchor pin 70 into the insertion hole 5 into which the adhesive R has been injected. The anchor pin 70 is inserted into the deepest portion so as to push the adhesive R in the insertion hole 5. Accordingly, the adhesive R flows into the gap so as to fit the pin body 72, and a part of the adhesive R is pushed out toward the opening of the insertion hole 5. When the pin body 72 of the anchor pin 70 reaches the deepest part, the pin head 71 closes the opening of the insertion hole 5. In this case, in the adhesive injection step, the volume of the uninjected portion where the adhesive R generated after the nozzle cylinder 21 is pulled out is not injected is substantially the same as the volume of the anchor pin 70. When the anchor pin 70 is inserted into the insertion hole 5, the insertion hole 5 can be substantially filled with the adhesive R without almost any leakage of the adhesive R from the insertion hole 5. Then, by curing in this state, the anchor pin 70 anchors the concrete casing 2, the mortar 7, the mortar 7 and the decoration material 8 with sufficient pulling strength via the adhesive R.

  As described above, according to the injection nozzle 12 of the present embodiment, each floating portion extends from the main discharge port 41 to the deepest portion of the insertion hole 5 and from the plurality of sub discharge ports 50 along the axial direction of the insertion hole 5. 4. Adhesive R can be efficiently poured into 4 and 6, so that it adheres well to the floating parts 4 and 6 generated between the concrete housing 2 and the mortar 7 and between the mortar 7 and the decorative material 8. Agent R can be injected. Therefore, the anchor pin 70 and the adhesive R can be effectively applied to the outer wall 1, and perfect repair of the outer wall 1 in which “floating” occurs can be performed.

  Next, with reference to Fig.10 (a), 2nd Embodiment of the injection | pouring nozzle in the adhesive injection device 10 of this invention is described. In the injection nozzle 100 in this embodiment, when the adhesive R is injected into the nozzle cylinder 89, the sub-discharge port 90 is connected to the mortar so as to face the boundary portion (floating portion 4) between the decorative material 8 and the mortar 7. Sub-discharge ports 91 are respectively provided so as to face a boundary portion (floating portion 6) with the concrete casing 2. Other configurations other than the sub discharge ports 90 and 91 of the nozzle cylinder 89 are the same as those in the first embodiment, and thus the description thereof is omitted.

  When the adhesive R is injected using the injection nozzle 100, the adhesive R is transferred from the main discharge port 41 to the deepest portion of the insertion hole 5, and from the sub discharge port 90 between the concrete housing 2 and the mortar 7. Then, it is poured into the floating portion 4 between the mortar 7 and the finishing material 3 from the sub discharge port 91. At this time, since the discharge resistance of the sub discharge port 90 is large at the initial stage of injection of the adhesive material R, first, the adhesive material R gradually passes from the deepest portion of the insertion hole 5 toward the opening portion from the main discharge port 41. When the adhesive R is filled in the deepest portion, the injection is started from the sub discharge port 90 to the floating portions 4 and 6, and the entire insertion hole 5 is eventually filled with the adhesive R. The In this way, the adhesive R is directly injected into the floating portions 4 and 6 generated between the concrete housing 2 and the mortar 7 and between the mortar 7 and the decorative material 8, so that the repair work is more efficient. Is possible.

  Next, a first modification of the injection nozzle 100 of the second embodiment will be described with reference to FIG. In the first modification, one (one place) or a plurality of sub discharge ports 50 are formed in the nozzle cylinder 21 corresponding to the floating portion 6. Specifically, as shown in FIG. 2B, the sub discharge port 90 is provided in the injection nozzle 100 so as to face the floating portion 6 between the decorative material 8 and the mortar 7. In this case, first, the main discharge port 41 is spread to the deepest part of the insertion hole 5 and flows into the floating portion 4 between the concrete housing 2 and the mortar 7. It is poured into the floating portion 6 between the mortar 7 and the finishing material 3. For this reason, it is difficult to spread the adhesive R up to the floating portion 6 between the mortar 7 and the finishing material 3 with only the main discharge port 41, but the adhesive directly from the sub discharge port 90 to the floating portion 6. Since R is injected, the adhesive R can be reliably distributed to both the floating portions 4 and 6.

  Next, a second modification of the injection nozzle 100 of the second embodiment will be described. In the second modified example, as shown in FIG. 10C, when the finishing material 3 is composed only of the mortar 7, the secondary discharge port 90 faces the floating portion 4 between the concrete housing 2 and the mortar 7. Is provided. Thereby, first, the adhesive R is spread from the main discharge port 41 to the deepest portion of the insertion hole 5, and at the same time, directly from the sub discharge port 90 to the floating portion 4 between the concrete frame 2 and the mortar 7. Since the injection of the adhesive R is performed, the adhesive R can be reliably distributed to the floating portion 4.

Next, the third embodiment will be described in detail with reference to FIG. The injection nozzle 110 of the present embodiment has the same configuration as that of the first embodiment except for the nozzle cylinder 115 and the body main body 113, and thus the description thereof is omitted. In the injection nozzle 110 of the third embodiment, a nozzle cylinder 115 having a main discharge port 111 at the tip and a plurality of sub discharge ports 112 on the peripheral surface, and a body body 113 having the nozzle tube 115 fixed to the tip side, The mounting body 114 detachably mounts the body body 113 to the injector body 17. The nozzle cylinder 115 is integrally fixed to the tip of the body main body 113. The sub discharge ports 112 are provided in the axial direction of the nozzle cylinder 115 with an interval of length L ₁ (about 10 mm). Further, the nozzle cylinder 115 is formed in a slow taper shape toward the tip and is made of a resin material, and the tip end side is appropriately cut according to the insertion depth of the insertion hole 5 and used. It has become.

  When injecting the adhesive R using the injection nozzle 110, the tip is matched to the depth of the insertion hole 5 and cut in the same manner as the main discharge port 111, so that the bottom of the insertion hole 5 is reliably secured. The adhesive R can be spread to each floating part similarly to 1st Embodiment.

Needless to say, the diameter and shape of the sub discharge ports 50 and 90 in each embodiment and the arrangement interval distance L1 between the sub discharge ports 50 in the first and third embodiments can be changed as appropriate.
In addition, it cannot be overemphasized that it can change suitably also in the diameter (inner diameter and outer diameter) of the nozzle cylinder 21, 89, 115 which comprises the injection flow path 37 in each Example.

It is a cross-sectional schematic diagram showing the relationship between the resin injector and the insertion hole formed in the outer wall, (a) is a diagram in the case where the finishing material is composed of mortar and tile, (b) is the finishing material is mortar FIG. It is a top view of a resin injector. It is a top view of the injection nozzle for pinning methods. It is an exploded plan view of the injection nozzle for the pinning method. It is sectional drawing of a nozzle cylinder, (a) provides two sub discharge ports so that it may face the circumferential direction of a nozzle cylinder, (b) provides multiple sub discharge ports in the circumferential direction of a nozzle cylinder. It is a thing. It is a top view of an anchor pin. The construction process of a pinning method is shown, (a) resin injection process first stage figure, (b) resin injection process middle figure, and (c) resin injection process latter stage figure. The construction process of a pinning method is shown, (a) Drawing which pulled out injection nozzle from insertion hole, (b) Pin insertion process first term figure, (c) Pin insertion process latter figure. (A) is a pin insertion process figure of an anchor pin, (b), (c) is a pin insertion process figure concerning the modification of an anchor pin. (A) is according to the second embodiment, (b) is a first modification according to the second embodiment, (c) is an injection nozzle according to the second modification according to the second embodiment. It is a cross-sectional schematic diagram used with respect to the insertion hole formed in the outer wall. It is a top view of the injection nozzle concerning a 3rd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Outer wall 2 ... Concrete frame 3 ... Finishing material 4 ... 1st floating part 5 ... Insertion hole 6 ... 2nd floating part 7 ... Mortar 8 ... Decoration material 10 ... Resin injector 11 ... Injector main body 12 ... Injection nozzle 17 DESCRIPTION OF SYMBOLS ... Pump body 21 ... Nozzle cylinder 22 ... Body main body 23 ... Joint member 24 ... Fastening member 26 ... Nozzle body 28 ... Mounting bracket 34 ... Through-hole 37 ... Injection flow path 41 ... Main discharge port 50 ... Sub discharge port 70 ... Anchor pin 71 ... Pin head 72 ... Pin body

Claims (7)

Used in the injector body,
In the injection nozzle for the pinning method for injecting the adhesive while sealing the opening to the insertion hole that penetrates the finishing material and drilled to the predetermined depth of the housing,
A nozzle body mounted on the injector body and having an adhesive flow path communicating with the injector body inside;
A nozzle cylinder that is held by the nozzle body at the base end portion, has a main discharge port at the tip end portion, and has an injection flow channel that communicates the adhesive flow channel and the main discharge port inside,
An injection nozzle for a pinning method, wherein one or more sub-discharge ports communicating with the injection channel are provided on a peripheral surface of the nozzle cylinder. The finishing material is composed of a decorative material and a mortar for attaching the decorative material to the housing,
On the peripheral surface of the nozzle cylinder, at the time of injection of the adhesive, at least two sub discharge ports are formed so as to face a boundary portion between the decorative material and the mortar and a boundary portion between the mortar and the casing. The injection nozzle for the pinning method according to claim 1, wherein the injection nozzle is used.   2. The injection nozzle for the pinning method according to claim 1, wherein a plurality of the sub-discharge ports are formed on the peripheral surface of the nozzle cylinder at equal intervals in the axial direction.   The injection nozzle for the pinning method according to any one of claims 1 to 3, wherein a plurality of the sub-discharge ports are formed in a circumferential direction at each formation position of the sub-discharge port in the nozzle cylinder. .   Each of the sub discharge ports is configured such that, in the initial stage of injection of the adhesive, the discharge resistance of the adhesive is larger than the discharge resistance of the adhesive at the main discharge port. An injection nozzle for the pinning method according to any one of claims 1 to 4. The nozzle body is
A body body that holds the injection tube and seals the opening of the insertion hole on the outer peripheral surface;
A mounting bracket for mounting the body body to the injector body, and
The injection nozzle for the pinning method according to any one of claims 1 to 5, wherein the body main body is made of either fluorine rubber or butyl rubber. Using an adhesive injector comprising the injection nozzle for the pinning method according to any one of claims 1 to 6 and the injector main body to which the injection nozzle is detachably mounted, the casing and the finishing material are used. In the pinning method to repair the wall body consisting of
A drilling step of penetrating the finishing material and drilling the casing to a predetermined depth to form the insertion hole;
An adhesive injection step of injecting the adhesive into the insertion hole while sealing the opening of the insertion hole by the adhesive injector;
A pin insertion step of inserting an anchor pin into the insertion hole into which the adhesive has been injected;
A pinning method characterized by comprising

Images