JP2020122278A - Adhesive injector for pinning method, and pinning method using the same - Google Patents

Abstract

To provide an adhesive injector for a pinning method capable of efficiently injecting adhesive according to the properties of a "floating part" generated on a wall.SOLUTION: An injection nozzle 12 includes: a first nozzle part 24 facing a deep part of the prepared hole; a second nozzle part 25 facing an opening of the prepared hole; and a nozzle body 22 formed with the first adhesive channel 61 and the second adhesive channel 62. An injector body 11 includes: a pump section 16; a first sending channel 96 connected to the first adhesive channel 61; a second sending channel 97 connected to the second adhesive channel 62; and a channel switching mechanism 80 for switching channels among: a full open position of opening the first sending channel 96 and the second sending channel 97; a first open position of opening the first sending channel 96 and closing the second sending channel 97; and a second open position of closing the first sending channel 96 and opening the second sending channel 97.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to an adhesive injector 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 this type of adhesive injector, an injection nozzle having two injection flow paths, a first injection flow path and a second injection flow path, for injecting an adhesive into an insertion hole formed in a wall body, There is known an adhesive injector including an injector main body to which an injection nozzle is attached (see Patent Document 1).
The injector body includes a tubular casing in which the adhesive is stored, a pump body that also serves as a lid of the casing, and a lever that operates the pump body. An injection nozzle is detachably attached to the tip of the pump body, and when the pump body is manually operated (pumping) with a lever, the adhesive in the casing is sent to the injection nozzle.
The injection nozzle includes a nozzle body having an adhesive flow path that is continuous with the injector body, and a nozzle inner cylinder that is provided so as to project from the tip of the nozzle body and is movable back and forth and that communicates with the adhesive flow path. I have it. Further, the nozzle body has a nozzle outer cylinder which holds the nozzle inner cylinder with a gap, and a sealing member which surrounds the nozzle outer cylinder and seals the opening of the insertion hole. A first injection flow path is formed inside the nozzle inner cylinder, and a discharge port that is continuous with the first injection flow path is formed at the tip of the nozzle inner cylinder. Further, a second injection flow path is formed in the gap between the nozzle inner cylinder and the nozzle outer cylinder, and a leak outlet that is continuous with the second injection flow path is formed at the tip of the nozzle outer cylinder.
When the adhesive is injected into the insertion hole while sealing the opening of the insertion hole with the sealing member, the adhesive is discharged from the discharge port of the nozzle inner cylinder through the first injection flow path, Gradually fill from the deepest part of the insertion hole. In addition, the adhesive is discharged from the leak port of the nozzle outer cylinder through the second injection flow path and is filled from before the insertion hole. As a result, the adhesive is filled not only in the insertion hole but also in the plurality of “floating portions” connected to the insertion hole.

Japanese Patent No. 3759157

By the way, in the wall body to be pinned, for example, in the outer wall, "floating part" may occur at the interface between the concrete skeleton and the base mortar, the interface between the base mortar and the applied mortar, and the interface between the applied mortar and the tile. There is a nature. For this reason, the locations and number of occurrences of "floating portions" vary depending on the site, and "floating portions" occur not only at one location of these interfaces but also at multiple locations. It's not unusual.
On the other hand, in the injection nozzle for the conventional pinning method, the adhesive is discharged from the discharge port of the nozzle inner cylinder connected to the first injection flow path and is discharged from the leak port of the nozzle outer cylinder connected to the second injection flow path. To be done. Therefore, in the conventional injection nozzle, the adhesive can be efficiently injected into the wall body in which the "floating portions" are formed at a plurality of places including the interface between the mortar and the tile.
However, when the volume of the "floating part" generated at the interface between the mortar and the tile is large (for example, "dango lining" for large tiles or standard stones), the "float" is present at the interface between the mortar and the tile. If it has not occurred, there is a problem that the adhesive cannot be efficiently injected.
In this case, for example, in addition to the injection form in which the adhesive is injected from the first injection flow path and the second injection flow path, the injection mode in which the adhesive is injected only from the first injection flow path and the injection from the second injection flow path If morphology is possible, the above problems would be eliminated.
However, in this case, it is necessary to incorporate a switching mechanism for switching the injection flow path into the injection nozzle, and the injection nozzle becomes large and heavy. Then, at the time of work, the nozzle inner cylinder inserted into the insertion hole and the sealing member become hard to see, and the hand-held position of the injector main body and the center of gravity of the adhesive injector are separated, and the weight balance is lost. "Concentration" collapses). Therefore, it is expected that new problems such as deterioration in handling and operability of the adhesive injector will occur.

INDUSTRIAL APPLICABILITY The present invention is capable of efficiently injecting an adhesive in accordance with the properties such as the number of "floating portions" generated in a wall body and the locations where they occur, and a pinning method that does not impair maneuverability and operability. An object of the present invention is to provide an adhesive agent injector for use in a machine and a pinning method using the same.

The adhesive injector for the pinning method of the present invention is an injection nozzle for injecting an adhesive while sealing the opening of a prepared hole formed by drilling a wall to a predetermined depth, and the injection nozzle is detachably attached. And a second injector facing the vicinity of the opening of the pilot hole, wherein the injector nozzle has a first nozzle opening facing the back of the pilot hole. A nozzle portion having a nozzle opening; and a nozzle body that holds the nozzle portion and forms a first adhesive flow path communicating with the first nozzle opening and a second adhesive flow path communicating with the second nozzle opening. The injector main body is provided with an adhesive storage part for storing the adhesive, a pump part for discharging the adhesive sucked from the adhesive storage part through the suction port from the discharge port, and an upstream side communicating with the discharge port. A first feed channel that communicates the downstream side with the first adhesive channel; a second feed channel that communicates the upstream side with the ejection port and the downstream side communicates with the second adhesive channel; A fully open position for opening the sending flow path and opening the second sending flow path; a first opening position for opening the first sending flow path and closing the second sending flow path; A flow path switching mechanism section that switches the flow path of the adhesive between a second open position that closes the flow path and opens the second flow path.

In this case, it is preferable that the nozzle section includes a first nozzle section having a first nozzle opening and a second nozzle section having a second nozzle opening.

According to these configurations, when the flow path switching mechanism is switched to the fully open position and the adhesive is fed from the injector main body, the adhesive in the injection nozzle moves to the first adhesive flow path through the first adhesive flow path. It is discharged from the nozzle opening and is also discharged from the second nozzle opening via the second adhesive flow path. As a result, the adhesive can be injected from the inner part of the prepared hole and the vicinity of the opening of the prepared hole. Further, when the adhesive is fed from the injector main body after switching the flow path switching mechanism to the first open position, the adhesive is injected from the injection nozzle body only through the first nozzle opening through the first adhesive flow path. Is ejected. Thereby, the adhesive can be injected only from the inner part of the prepared hole. Further, when the flow path switching mechanism is switched to the second open position and the adhesive is fed from the injector main body, the adhesive is injected from the injection nozzle main body only through the second nozzle opening through the second adhesive flow path. Is ejected. As a result, the adhesive can be injected only from the vicinity of the opening of the prepared hole.
Therefore, in the wall body, when "floating parts" are generated at a plurality of places including the vicinity of the opening of the prepared hole, the flow path switching mechanism is switched to the fully open position, and " When the “floating part” is not generated, the flow path switching mechanism part can be switched to the first open position to inject the adhesive. Further, when the volume of the “floating part” generated near the opening of the prepared hole is large, the flow path switching mechanism part can be switched from the middle of the injection to the second open position to inject the adhesive. .. In this way, the adhesive can be efficiently injected according to the properties such as the number of "floating parts" generated in the wall body and the generation position.
On the other hand, since the flow path switching mechanism is incorporated in the injector body instead of the injection nozzle, the injection nozzle is prevented from becoming large. As a result, at the time of work, the nozzle portion inserted into the pilot hole is not easily visible, and the center of gravity of the adhesive injector is located on the side of the injector main body that is held by hand, which impairs the overall weight balance ( The "mass concentration" does not collapse). Therefore, maneuverability and operability are not impaired.

Further, the first feeding passage and the second feeding passage are formed so as to be parallel to each other in the pump casing of the pump portion, and the passage switching mechanism portion is provided in the pump casing with the first feeding passage. It is also preferable that it is provided in the second feeding channel.

According to this configuration, the flow passage switching mechanism portion can be easily configured by forming the flow passage switching mechanism portion in the pump casing in which the first feed passage and the second feed passage are formed. it can. Further, the flow path switching mechanism section can be formed in a valve type by interposing the flow path switching mechanism section in the first feeding flow path and the second feeding flow path arranged in parallel with each other. Also in this respect, the flow path switching mechanism can be appropriately and easily configured.

In this case, the nozzle body has a first joint portion connected to the first adhesive flow passage and a second joint portion connected to the second adhesive flow passage at the base end portion, and the pump casing has the first joint portion at the front end portion. The injection nozzle has a first joint receiving portion connected to the first feed passage and a second joint receiving portion continuous to the second feed passage. It is preferable that it is detachably mounted in a state where it is joined and the second joining portion is joined to the second joining receiving portion.

According to this configuration, when the injection nozzle is mounted on the injector body, the first joining portion is joined to the first joining receiving portion and the second joining portion is joined to the second joining receiving portion, so that the filling nozzle is The first adhesive flow path and the second adhesive flow path can be properly communicated with the first feed flow path and the second feed flow path of the injector body. In addition, it is preferable that one of the first joint portion and the first joint receiving portion is convex and the other is concave. Similarly, it is preferable that one of the second joint portion and the second joint receiving portion is convex and the other is concave. Further, it is preferable that a check valve is incorporated in the first joint receiving portion and the second joint receiving portion.

In these cases, the flow path switching mechanism is a columnar space that is orthogonal to the first and second flow paths and has the first and second flow paths opened on the inner peripheral wall. A valve-shaped valve seat portion and a cylindrical valve body portion that is fitted into the valve seat portion and is rotated around an axis line. The valve body portion includes a first valve passage portion corresponding to the first feed passage. The valve body has a through hole and a second through hole corresponding to the second feed passage, and the valve body portion has three rotation angles corresponding to the full open position, the first open position, and the second open position. The first through hole and the second through hole are configured to be rotatably operated at positions, and the first through hole and the second through hole are arranged around the axis so as to be in the full open position, the first open position, and the second open position, respectively, at three rotation angle positions. Different penetration angles are preferred.

According to this configuration, the flow path of the adhesive is fully opened and first opened through the first through hole and the second through hole only by appropriately rotating the valve body to the three rotational angle positions. And the second open position can be easily switched between each other. In addition, the flow path switching mechanism section can have a simple structure with a small number of parts, and can be easily disassembled, washed, and assembled after the injection work.

Similarly, the flow path switching mechanism section is a columnar space state that is orthogonal to the first and second flow paths and has the first and second flow paths opened on the inner peripheral wall. And a columnar valve body part that is fitted to the valve seat part and that is rotated around an axis, the valve body part corresponding to the first feed passage. It has a notch groove and a second notch groove corresponding to the second feeding flow path, and the valve body portion has three opening positions, a first opening position and a second opening position. The first cutout groove and the second cutout groove are configured to be rotatably operated in the rotation angle position so that the first cutout groove and the second cutout groove are in the full open position, the first open position, and the second open position, respectively, at the three rotation angle positions. It is preferable that the notch angles around the axis differ.

According to this configuration, by simply rotating the valve body portion appropriately to the three rotation angle positions, the flow path of the adhesive is fully opened through the first cutout groove and the second cutout groove, and the first cutout groove is opened. It is possible to easily switch between the open position and the second open position. In addition, the flow path switching mechanism section can have a simple structure with a small number of parts, and can be easily disassembled, washed, and assembled after the injection work.

Similarly, the flow path switching mechanism section is a columnar space state that is orthogonal to the first and second flow paths and has the first and second flow paths opened on the inner peripheral wall. And a cylindrical valve body that is fitted around the valve seat and is rotated around an axis. The valve body has a first feed passage and a second feed passage. It has a single elliptical through hole corresponding to the flow path and having an elliptical cross section, and the valve body has three rotation angles corresponding to the full open position, the first open position and the second open position. The elliptical through-hole is configured to be rotatably operated in the position, and extends obliquely with respect to the axial direction so that the elliptical through-hole is in the full open position, the first open position, and the second open position at the three rotation angle positions. Preferably.

According to this structure, the flow path of the adhesive is fully opened, first opened, and second opened through the elliptical through-holes only by appropriately rotating the valve body to three rotational angle positions. You can easily switch between positions. In addition, the flow path switching mechanism section can have a simple structure with a small number of parts, and can be easily disassembled, washed, and assembled after the injection work.

Further, it is preferable that the valve seat portion has a female screw shape, and the valve body portion has a male screw shape that is screwed into the valve seat portion.

According to this configuration, by using the screw mechanism for the valve seat portion and the valve body portion, it is possible to prevent the valve body portion from floating or coming off due to the pressure of the adhesive, and the structure can be simplified accordingly. it can. In this case, it is preferable to use a screw having a small thread pitch.

Further, the flow path switching mechanism section is a cylindrical valve which is orthogonal to the first and second flow paths and has the first and second flow paths opened on the inner peripheral wall. The valve body has a seat portion and a plunger-shaped valve body portion that is slidably operated in the axial direction while being fitted to the valve seat portion, and the valve body portion includes the first feeding flow passage and the second feeding flow passage. It has a first annular groove and a second annular groove that selectively face the road, and the valve body can be slid into three forward/backward positions corresponding to the fully open position, the first open position, and the second open position. And the first annular groove and the second annular groove are respectively at the fully open position, the first open position, and the second open position in the three advancing and retracting positions, respectively. It is preferable that they are arranged in the axial direction with the same dimension as the spacing dimension from the feeding flow path.

According to this configuration, by simply sliding the valve body portion appropriately to the three advancing/retreating positions, the flow path of the adhesive is fully opened, the first opened position, and the first opened position via the first annular groove and the second annular groove. It is possible to easily switch between the second open positions. Further, in the first annular groove and the second annular groove, the cross-sectional area of the flow passage can be made equal to the cross-sectional area of the first feeding flow passage and the second feeding flow passage, and the pressure loss due to the flow passage friction loss is caused. Can be kept low. In addition, the flow path switching mechanism section can have a simple structure with a small number of parts, and can be easily disassembled, washed, and assembled after the injection work.

Similarly, the flow path switching mechanism section is a columnar space state that is orthogonal to the first and second flow paths and has the first and second flow paths opened on the inner end wall. A valve seat portion and a cylindrical valve body portion that is fitted to the valve seat portion and is rotated around an axis line. The valve body portion is coaxial with the first feed passage. And an arcuate through hole having a single arcuate cross-section corresponding to the second feed channel, and the valve body portion has three openings corresponding to the full open position, the first open position and the second open position. The arcuate through-hole is configured so as to be pivotable to one pivot angle position, and the arc-shaped through-holes are respectively set to the full open position, the first open position, and the second open position at the three rotary angle positions, respectively. It is preferably formed in a substantially semicircular arc shape centered on the midpoint between the flow path and the second feed flow path.

According to this structure, the flow path of the adhesive is fully opened, the first opened position, and the second opened via the arc-shaped through hole only by appropriately rotating the valve body to the three rotational angle positions. You can easily switch between positions.

The pinning method of the present invention is a pinning method for repairing a wall body by using the above-described adhesive injector for the pinning method, and a perforation step of forming a pilot hole by perforating the wall body to a predetermined depth, An injection step of injecting an adhesive into the pilot hole while sealing the opening of the pilot hole with an adhesive injector, and a mounting step of inserting and mounting an anchor pin in the pilot hole into which the adhesive has been injected. It is characterized by having.

According to this configuration, after the prepared hole is drilled in the repaired portion of the wall body, the adhesive is injected into the prepared hole by the adhesive injector. At that time, the adhesive is injected from the first nozzle opening and the second nozzle opening, and the adhesive is injected only from the first nozzle opening according to the properties such as the number of “floating parts” in the wall body and the generation position. An appropriate injection form can be taken from the three injection forms, that is, the case where the adhesive is injected and the case where the adhesive is injected only from the second nozzle port. Therefore, the filling of the prepared hole of the adhesive and the filling of the "floating part" can be appropriately and efficiently performed according to the properties of the wall body.

It is a cross-sectional schematic diagram showing the relationship between the adhesive injector and the outer wall according to the first embodiment. It is a side view of the adhesive injection device concerning a 1st embodiment. It is a cutting side view of the injection nozzle in an adhesive agent injection device. It is a cutting side view of the injector body in the adhesive agent injector. It is operation|movement explanatory drawing of the flow-path switching mechanism part in an injector main body, The figure switched to the 1st open position (a), the figure switched to the full open position (b), The figure switched to the 2nd open position (c). ). It is operation|movement explanatory drawing of the flow-path switching mechanism part in the 1st modification of 1st Embodiment, Comprising: The figure switched to the 1st open position (a), the figure switched to the full open position (b), The 2nd open position. It is the figure (c) which switched to. It is operation|movement explanatory drawing of the flow-path switching mechanism part in the 2nd modification of 1st Embodiment, Comprising: The figure switched to the 1st open position (a), the figure switched to the full open position (b), The 2nd open position. It is the figure (c) which switched to. It is operation|movement explanatory drawing of the flow path switching mechanism part in the 3rd modification of 1st Embodiment, Comprising: The figure switched to the 1st open position (a), the figure switched to the full open position (b), The 2nd open position. It is the figure (c) which switched to. It is explanatory drawing showing the work procedure (a), work procedure (b), work procedure (c), and work procedure (d) of the pinning construction method which is performed with the flow path switching mechanism part in the fully open position. In the above-mentioned work procedure (b), it is an explanatory view in the case where the injection form is different, the drawing (a) of the injection form in which the flow path switching mechanism unit is in the first open position, and the flow path switching mechanism unit is opened in the second. It is a figure (b) of the injection form set as the position. It is a partially cut side view of the injector body in the adhesive injector of the second embodiment. It is a cutting side view of the injection nozzle which concerns on 3rd Embodiment. It is operation|movement explanatory drawing of the flow-path switching mechanism part in 3rd Embodiment, Comprising: The figure switched to the 1st open position (a), the figure switched to the full open position (b), the figure switched to the 2nd open position ( c). It is a partial cut side view of the injector main body in the adhesive injector of 4th Embodiment, Comprising: The figure in which the flow-path switching mechanism part is in a fully open position (a), the figure in a 1st open position (b), It is a figure (c) in 2 open position. It is a partially cut side view of the injector body in the adhesive injector of the fifth embodiment. It is operation|movement explanatory drawing of the flow-path switching mechanism part in 5th Embodiment, Comprising: The figure switched to the fully open position (a), the figure switched to the 1st open position (b), the figure switched to the 2nd open position ( c). It is a cutting side view of the injection nozzle in the adhesive injector of a 6th embodiment. It is the side view (a) around the compound nozzle part of the injection nozzle in the adhesive injector of 6th Embodiment, and its rear view (b).

Hereinafter, an adhesive injector for a pinning method and a pinning method using the same according to an embodiment of the present invention will be described with reference to the accompanying drawings. In the pinning method, a pre-drilled hole is made in the repaired portion of the wall such as the outer wall or inner wall of the building where "floating" has occurred, and an adhesive injector for the pinning method (hereinafter simply referred to as "adhesive injection" The adhesive is injected using a container, and then an anchor pin is loaded into the prepared hole to repair it (prevention of peeling). Hereinafter, a case of repairing an outer wall of a building will be described as an example.

[First Embodiment]
FIG. 1 is a schematic cross-sectional view showing the relationship between the outer wall and the adhesive injector. As shown in the figure, the outer wall 1 has a concrete skeleton 2, a base mortar 3 applied to the surface of the concrete skeleton 2, a sticking mortar 4 applied to the surface of the base mortar 3, and a surface of the sticking mortar 4. It is composed of a finishing material 5 such as a tile attached. The finishing material 5 also includes large tiles and standard stones (stone materials).

In the outer wall 1 of the present embodiment, the first floating portion 6a is provided at the interface between the concrete skeleton 2 and the base mortar 3, the second floating portion 6b is provided at the interface between the base mortar 3 and the adhesive mortar 4, and the adhesive mortar 4 is further finished. It is assumed that the third floating portion 6c is formed at the interface with the material 5. In order to repair this, the outer wall 1 is formed with a prepared hole 8 penetrating the finishing material 5, the mortar 4 to be attached and the base mortar 3 and perforating the concrete skeleton 2 to a predetermined depth. Then, when the outer wall 1 is repaired, the adhesive R is injected into the prepared hole 8 by the adhesive injector 10.

[Adhesive injector]
Here, the adhesive injector 10 will be briefly described with reference to FIGS. 1 and 2. As shown in both figures, the adhesive injector 10 is composed of a pump type injector main body 11 for supplying the adhesive R, and an injection nozzle 12 detachably attached to the tip of the injector main body 11. Has been done. The injector body 11 sends the stored adhesive R to the injection nozzle 12 by a pumping operation, and the injection nozzle 12 directly injects the sent adhesive R into the prepared hole 8 formed in the outer wall 1.

[Outline of injector body]
The injector body 11 includes a bottomed cylindrical adhesive reservoir 15, a pump unit 16 to which the adhesive reservoir 15 is detachably attached, and a substantially “L”-shaped operation held by the pump unit 16. And a lever 17. An adhesive storage portion 15 in which an adhesive R is stored is attached to the base end side of the pump portion 16, and the injection nozzle 12 is attached to the tip end side. By holding the adhesive storage portion 15 by hand and manually operating (pumping) the operation lever 17, the adhesive R is discharged from the injection nozzle 12 through the pump portion 16 at a constant rate.

As the adhesive R, it is preferable to use a so-called two-component type epoxy resin adhesive. However, the adhesive R may be a viscous inorganic adhesive. The injector body 11 may be of a type in which the pump is manually driven as described above, or a type in which the pump is automatically driven by a motor or an air actuator.

[Outline of injection nozzle]
The injection nozzle 12 includes a mounting cover portion 21 mounted on the injector main body 11, a nozzle body 22 housed inside the mounting cover portion 21, an opening sealing portion 23 attached to a tip end portion of the nozzle body 22, A first nozzle portion 24 supported by the nozzle body 22 and penetrating the opening sealing portion 23 in the axial direction and extending forward, and a second nozzle formed in a gap between the first nozzle portion 24 and the opening sealing portion 23. And a section 25.

Hereinafter, the structure of the injection nozzle 12 will be described in detail with reference to FIG. 3, and the structure of the injector body 11 will be described in detail with reference to FIG. 4.

[First nozzle part]
As shown in FIG. 3, the first nozzle portion 24 is a portion that is inserted into the pilot hole 8 and injects the adhesive R into the back portion of the pilot hole 8. It is formed like a needle. Further, the first nozzle portion 24 is arranged at a position eccentric to the axis of the nozzle body 22. A restricting portion 31 that expands in a funnel shape is formed at the base end portion of the first nozzle portion 24, and a diagonally cut first nozzle opening 32 is formed at the tip end portion.

Further, inside the first nozzle portion 24, a first injection flow path 33 that communicates with a first adhesive flow path 61 of the nozzle body 22 described later is formed. Then, the first nozzle portion 24 is axially held by a nozzle holding portion 64 of a nozzle body 22, which will be described later, so as to be capable of advancing and retracting (sliding), and penetrates the opening sealing portion 23 in a loosely fitted state to seal the opening. It largely projects from the portion 23.

[Opening sealing part]
The opening sealing portion 23 is a portion that seals the opening portion 8a of the prepared hole 8 when the adhesive R is injected, and is made of a chemically resistant elastic material such as fluororubber. The opening sealing portion 23 includes a tapered tapered portion 41 that directly seals the opening 8a, a straight portion 42 that is continuous to the base end side of the tapered portion 41, and an outer peripheral step portion 43. It is integrally formed with the body joint portion 44 connected to the end side. The taper portion 41 and the straight portion 42 are arranged at positions eccentric with respect to the axis of the body joint portion 44.

The body joint portion 44 is formed with a joint recess 46 into which the tip end portion of the nozzle body 22 is joined inside the base end side. Further, the tapered portion 41, the straight portion 42, and the body joint portion 44 are formed at their axial centers with loose fitting holes 47 through which the first nozzle portion 24 is loosely fitted. The base end of the loose fitting hole 47 communicates with the joint recess 46. Needless to say, the loose fitting hole 47 and the first nozzle portion 24 that is inserted (penetrated) therethrough are coaxially arranged with a gap.

[Second nozzle part]
The second nozzle portion 25 is a portion for injecting the adhesive R in the vicinity of the opening 8 a of the prepared hole 8, and is a gap between the loose fitting hole 47 formed in the opening sealing portion 23 and the first nozzle portion 24. The second injection flow channel 55 configured as described above, and an annular second nozzle port 56 that is connected to the second injection flow channel 55 and that is formed between the tip of the opening sealing portion 23 and the first nozzle portion 24. , Have. The second injection flow channel 55 communicates with a second adhesive flow channel 62 of the nozzle body 22 described later. As described above, the first nozzle portion 24 is held by the nozzle holding portion 64 of the nozzle body 22 without rattling, and the second nozzle formed between the first nozzle portion 24 and the opening sealing portion 23. The flow passage cross section of the injection flow passage 55 is appropriately maintained.

[Nozzle body]
The nozzle body 22 is formed of stainless steel, steel, or the like in a substantially columnar shape. Inside the nozzle body 22, the first adhesive flow path 61 communicating with the first injection flow path 33 of the first nozzle section 24 on the downstream side and the second injection flow path 55 of the second nozzle section 25 on the downstream side. And a second adhesive flow path 62 communicating with the. Further, inside the nozzle body 22, the above-mentioned nozzle holding portion 64 constituted by a fitting hole extending from the downstream end of the first adhesive flow path 61 is formed.

The first adhesive flow path 61 extends linearly, and the first adhesive flow path 61 and the first injection flow path 33 (first nozzle portion 24) are coaxially arranged. The first adhesive passage 61 is formed to have a larger diameter than the nozzle holding portion 64, and the regulation portion 31 of the first nozzle portion 24 is provided at the step portion 65 between the first adhesive passage 61 and the nozzle holding portion 64. Is abutted, the forward end position of the first nozzle portion 24 is regulated. The retracted end position of the first nozzle portion 24 is regulated by the first joint joint 88 of the injector body 11 described later.

The second adhesive flow passage 62 has a second linear flow passage portion 62a extending parallel to the first adhesive flow passage 61, and a circular offset flow passage portion 62b continuous to the downstream side of the second linear flow passage portion 62a. And have. The offset flow channel portion 62b constitutes an adhesive reservoir, and the second injection flow channel 55 of the second nozzle portion 25 communicates with the offset flow channel portion 62b. The first adhesive flow passage 61 and the second linear flow passage portion 62a are formed to have the same diameter and are arranged at 180° point symmetrical positions with respect to the axial center of the nozzle body 22.

An annular joint 67 that is joined to the body joint 44 of the opening sealing portion 23 is formed at the tip of the nozzle body 22, and a circular recess 68 is formed at the tip of the annular joint 67. Has been done. The recess 68 faces the end wall of the joint recess 46 of the body joint 44 to form a closed space, and the closed space forms the offset flow passage 62b. Although details will be described later, when the mounting cover portion 21 is screwed (mounted) to the injector body 11, the opening sealing portion 23 is strongly attracted to the nozzle body 22 side. As a result, the joining concave portion 46 of the opening sealing portion 23 strongly comes into close contact with the annular joining portion 67 of the nozzle body 22, and the offset flow passage portion 62b is sealed.

At the base end portion of the nozzle body 22, a first concave portion 71 (first joint portion) that is continuous with the upstream end of the first adhesive flow path 61 is formed, and the second adhesive flow path 62 (second linear flow) is formed. A second concave portion 72 (second joint portion) communicating with the upstream end of the passage portion 62a) is formed. The first recess 71 is formed to have a diameter larger than that of the first adhesive flow path 61 coaxially with the first adhesive flow path 61, and the first O-ring 73 is attached to this portion. Similarly, the second recess 72 is formed to have a diameter larger than that of the second adhesive flow path 62 coaxially with the second adhesive flow path 62, and the second O-ring 74 is attached to this portion.

The first recess 71 (first O-ring 73) and the second recess 72 (second O-ring 74) are arranged at the same position in the axial direction (front-back direction). Although the details will be described later, the first joint joint 88 (first joint receiving portion) of the injector body 11 is joined to the first recess 71 (first joint portion) with the first O-ring 73 interposed. The second joint joint 89 (second joint receiving portion) of the injector body 11 is joined to the second recess 72 (second joint portion) with the second O-ring 74 interposed.

[Mounting cover part]
The mounting cover portion 21 is a portion for mounting the injection nozzle 12 on the injector main body 11, and is formed of stainless steel, steel, or the like in a cylindrical shape. The mounting cover portion 21 has a cover portion 76 that accommodates the nozzle body 22 and the body joint portion 44 of the opening sealing portion 23 therein, a hooking portion 77 provided at a tip portion of the cover portion 76, and a base of the cover portion 76. The rear female screw portion 78 provided at the end portion is integrally formed. The latch portion 77 latches the body joint portion 44 of the opening sealing portion 23 from the outside, and in this state, the rear female screw portion 78 is screwed to the tip portion of the injector body 11.

When the mounting cover portion 21 is screwed (mounted) to the injector body 11, the opening sealing portion 23 and the nozzle body 22 are attracted to the injector body 11. As a result, the opening sealing portion 23 and the nozzle body 22 are brought into close contact with each other to seal between them, and the nozzle body 22 and the injector body 11 are connected to each other via the first O ring 73 and the second O ring 74. Close to each other. At the same time, the first adhesive flow path 61 communicates with (the first joint internal flow path 102 of) a first bonding joint 88 described later via the first O-ring 73, and the second adhesive ring 61 via the second O-ring 74 The second adhesive flow path 62 and the second bonding joint 89 described later (the second joint internal flow path 103) communicate with each other.

By the pumping, the adhesive R fed from the injector main body 11 in a branched state is fed into the first adhesive flow path 61 and the second adhesive flow path 62. The adhesive R sent into the first adhesive flow path 61 passes through the first injection flow path 33 and is discharged from the first nozzle port 32. Similarly, the adhesive R fed into the second adhesive flow path 62 is discharged from the second nozzle port 56 through the second injection flow path 55.

[Injector body]
Next, the injector body 11 will be described in detail with reference to FIG. As described above, the injector body 11 includes the adhesive agent storage portion 15, the pump portion 16, and the operation lever 17. An adhesive storage section 15 in which an adhesive R is stored is attached to the base end side of the pump section 16, and the injection nozzle 12 is attached to the tip end side. By holding the adhesive storage portion 15 by hand and manually operating (pumping) the operation lever 17, the adhesive R is discharged from the injection nozzle 12 through the pump portion 16 at a constant rate.

The pump section 16 has a flow path switching mechanism section 80 that selectively feeds the adhesive R to the first adhesive flow path 61 and the second adhesive flow path 62 of the injection nozzle 12. Although the details will be described later, the flow path switching mechanism section 80 discharges the adhesive R only from the first nozzle section 24 via the first adhesive flow path 61 on the injector body 11 side, and When discharging from the first nozzle section 24 and the second nozzle section 25 via the first adhesive flow path 61 and the second adhesive flow path 62, and from the second nozzle section 25 via the second adhesive flow path 62. The flow path can be switched between the case of discharging only.

[Adhesive storage part]
The adhesive storage part 15 is a part that stores the adhesive R, and although not shown in detail, is formed in a bottomed tubular shape. The tip of the adhesive storage portion 15 is detachably attached (screwed) to the pump portion 16 with the large-diameter O-ring 81 interposed. For example, a bowl-shaped packing and a coil spring for urging the bowl-shaped packing are incorporated inside the adhesive agent storage section 15 to apply a predetermined pressure to the stored adhesive material R.

[Pump part]
The pump portion 16 includes a cap portion 84 to which the adhesive agent storage portion 15 is screwed, a casing body 86 that projects from the cap portion 84 and forms a cylinder 85, and a block portion 87 that is continuous with the casing body 86 and supports the operation lever 17. A pump casing 83 having The cap portion 84, the casing main body 86 and the block portion 87 are integrally formed to form a die-cast pump casing 83. Then, a first joining joint 88 joined to the first recess 71 of the injection nozzle 12 and a second joining joint 89 joined to the second recess 72 are attached to the tip of the block 87.

The cap portion 84 is integrally formed by a circular cap body 91 having a diameter larger than that of the adhesive storage portion 15 and an annular female screw portion 92 extending from the cap body 91. The adhesive reservoir 15 is screwed into the female screw portion 92 with the large-diameter O-ring 81 interposed. Further, the cap body 91 is formed with a suction port 93 communicating with the cylinder 85. Then, the adhesive R in the adhesive storage section 15 is fed into the cylinder 85 through the suction port 93.

The casing main body 86 extends in the diametrical direction of the cap portion 84, projects forward, and has a cylinder 85 formed therein. In the cylinder 85, a piston 95 that constitutes a reciprocating pump together with the cylinder 85 is slidably accommodated. The base end portion (exposed portion) of the piston 95 is rotatably connected to the operation lever 17.

The operation lever 17 is rotatably supported on the upper portion of the block portion 87. Further, inside the block portion 87, a first feeding flow channel 96 communicating with the first adhesive flow channel 61 and a second feeding flow channel 97 communicating with the second adhesive flow channel 62 are formed. Has been done. The upstream end of the first feed flow path 96 communicates with the cylinder 85 via the first discharge port 98. Similarly, the upstream end of the second feed flow passage 97 communicates with the cylinder 85 via the second discharge port 99.

The first feeding flow passage 96 and the second feeding flow passage 97 are formed to have the same length and the same diameter, and are arranged parallel to each other. Further, the flow path switching mechanism unit 80 is incorporated in the block portion 87 so as to face the first feed flow passage 96 and the second feed flow passage 97. The flow path switching mechanism section 80 will be described in detail later.

A front male screw portion 101 with which the rear female screw portion 78 of the injection nozzle 12 is screwed is formed at the tip of the block portion 87. The injection nozzle 12 is detachably attached to the injector main body 11 by screwing the rear female screw portion 78 into the front male screw portion 101. Further, the first joining joint 88 is screwed (tapered screw) to the front end of the block portion 87 so as to face the first feeding flow passage 96, and the second joining is made so as to face the second feeding flow passage 97. The joint 89 is screwed (tapered screw). Then, inside the first bonding joint 88, a first in-joint flow path 102 that connects the first adhesive flow path 61 and the first feed flow path 96 is formed. Similarly, inside the second joining joint 89, a second joint internal passage 103 that connects the second adhesive passage 62 and the second feeding passage 97 is formed.

A first narrowed portion 105 is formed in the first feed passage 96 located between the first joining joint 88 and the passage switching mechanism portion 80. The first narrow portion 105 is provided with a first spherical body 106 that contacts from the first joint joint 88 side and a first coil spring 107 that presses the first spherical body 106. The first coil spring 107 is pressed by the first joint joint 88 screwed into the block portion 87, and biases the first spherical body 106 so as to come into close contact with the first narrow portion 105. As a result, a first check valve 108 having the first narrow portion 105 as a valve seat and the first spherical body 106 as a valve body is configured. The first check valve 108 prevents the adhesive R from flowing back in the first feed passage 96.

Similarly, a second narrowed portion 111 is formed in the second feed flow passage 97 located between the second joining joint 89 and the flow passage switching mechanism portion 80. The second narrow portion 111 is provided with a second spherical body 112 that contacts from the second joint joint 89 side and a second coil spring 113 that presses the second spherical body 112. The second coil spring 113 is pressed by the second joint joint 89 screwed into the block portion 87, and biases the second spherical body 112 so as to come into close contact with the second narrow portion 111. As a result, a second check valve 114 having the second narrow portion 111 as a valve seat and the second sphere 112 as a valve body is configured. The second check valve 114 prevents the adhesive agent R from flowing back in the second feed passage 97.

[Operating lever]
The operation lever 17 has a lever main body 116 for performing pumping, and a connection link 117 that connects the lever main body 116 and the block portion 87. One end of the connecting link 117 is rotatably supported by the block portion 87, and the other end is rotatably connected to the tip of the lever body 116. The lever main body 116 extends long along the adhesive reservoir 15 and is rotatably connected to the piston 95 near the connection link 117 side.

When the lever body 116 is rotated (pumped), the piston 95 reciprocates with respect to the cylinder 85. When the piston 95 moves back, the adhesive R in the adhesive reservoir 15 flows into the cylinder 85 via the suction port 93, and when the piston 95 subsequently moves, the adhesive R in the cylinder 85 causes the first discharge port. It flows out to the 1st sending-in flow path 96 via 98, and also to the 2nd sending-in flow path 97 via the 2nd discharge port 99.

[Flow path switching mechanism]
Here, the flow path switching mechanism unit 80 will be described in detail with reference to FIGS. 4 and 5.
The flow path switching mechanism section 80 faces the first sending flow path 96 and the second sending flow path 97 arranged in parallel with each other, and connects the first sending flow path 96 and the second sending flow path 97. The flow paths can be selectively switched. Specifically, the flow path switching mechanism unit 80 opens the first sending flow path 96 and the second opening flow path 97 at the fully open position, and opens the first sending flow path 96. The adhesive R is provided between a first open position that closes the second feed flow path 97 and a second open position that closes the first feed flow path 96 and opens the second feed flow path 97. The flow paths can be switched.

When the flow path switching mechanism 80 is switched to the fully open position, the adhesive R is discharged from the first nozzle port 32 via the first adhesive flow path 61 and the first injection flow path 33, and at the same time the second adhesive is applied. It is discharged from the second nozzle port 56 via the agent flow channel 62 and the second injection flow channel 55. Similarly, when the flow path switching mechanism section 80 is switched to the first opening position, the adhesive R is discharged only from the first nozzle port 32, and when it is switched to the second opening position, the adhesive R is discharged to the second nozzle port. It is discharged only from 56. Although the details will be described later, the injection mode of the adhesive R can be appropriately changed according to the location and the number of "floating" on the outer wall 1.

The flow path switching mechanism section 80 is orthogonal to the first feed flow passage 96 and the second feed flow passage 97, and the first feed flow passage 96 and the second feed flow passage 97 are vertically opened on the inner peripheral wall. The valve seat portion 121 has a female screw shape and the valve body portion 122 has a male screw shape that is screwed into the valve seat portion 121 and is rotated around the axis. The valve body portion 122 is fixed to the valve body portion body 124 by a valve body portion body 124 screwed to the valve seat portion 121, an operation knob portion 125 for rotating the valve body portion body 124, and the operation knob portion 125. And a machine screw 126 such as a urea screw.

The valve body main body 124 has a first through hole 127 corresponding to the first inflow channel 96 and a second through hole 128 corresponding to the second inflow channel 97. Further, the second feed-in flow path 97 is formed so as to penetrate therethrough so as to be perpendicular to each other around the axis line with a distance corresponding to the separation dimension of the second feed-flow path 97. The first through hole 127 is formed to have a smaller diameter than that of the first feed channel 96, and two first cutout portions 127a are formed at the opening edge portion thereof. Similarly, the second through hole 128 is formed to have a smaller diameter than the second feeding flow path 97, and two second cutouts 128a are formed at the opening edge (see FIG. 5 for both). .. Further, the lower portion of the valve body main body 124 is exposed from the block portion 87, and the operation knob 125 engages with this portion in a rotation stop state, and the operation knob 125 is fixed by the machine screw 126 to the valve body. It is fixed to the main body 124.

The operation knob portion 125 provided so as to be exposed from the block portion 87 extends from the position of the valve body portion main body 124 to the axially forward direction of the block portion 87, and this state (angle 0°) is as described above. It corresponds to the first open position. A position rotated by 45 degrees around the axis from the first open position corresponds to the full open position, and a position rotated by 45 degrees around the axis from the full open position (angle 90 from the first open position). The rotated position) corresponds to the second open position (see FIG. 5). Although details will be described later, the frequency of use in the field is empirically in the order of the first open position, the full open position, and the second open position.

A valve portion O-ring 129 is provided between the block portion 87 and the operation knob portion 125 so as to be wound around the valve body portion main body 124. The valve portion O-ring 129 seals the gap between the valve seat portion 121 and the valve body portion 122 by being pressed and deformed by the operation knob portion 125. The screw mechanism of the embodiment configured by the valve seat portion 121 and the valve body portion 122 is configured by a single-thread screw having a short pitch, and the operation knob 125 is fully opened, first opened, and second opened. The valve O-ring 129 maintains the deformed state during the rotation angle operation between the positions. This prevents the adhesive R from leaking from the gap between the valve seat portion 121 and the valve body portion 122 during pumping.

FIG. 5 shows a switching operation of the flow path switching mechanism section 80. As shown in the figure, the first through hole 127 and the second through hole 128 formed in the valve body 122 are orthogonal to each other around the axis line, and the first feed passage 96 and the second feed passage 96 are provided. The feed flow path 97 extends in the axial direction of the block portion 87. The three rotation angle operation positions are a first open position (FIG. 5(a)), a full open position (FIG. 5(b)), and a second open position (FIG. 5(c)) in order of frequency of use. The operation knob 125 in the first opening position is oriented in the axial direction of the block 87 (this is the “default” angle 0°).

In the first open position, in the valve body 122, the first through hole 127 faces the direction of an angle of 0° and the second through hole 128 faces the direction of an angle of 90° (see FIG. 5A). In this state, the first through hole 127 including the first cutout portion 127a faces the first feed passage 96, and the first feed passage 96 is in an open state (communication state). On the other hand, the second through hole 128 including the second cutout portion 128a is disengaged from the second feed flow passage 97, and the second feed flow passage 97 is in a closed state (non-communication state). Therefore, the adhesive R is discharged only from the first nozzle portion 24 (first nozzle port 32) via the first feed flow path 96.

In the fully open position in which the operation knob 125 is rotated counterclockwise at an angle of 45° (top view) from the first open position, in the valve body 122, the first through hole 127 of the valve body part 122 faces the direction of the angle of 45°. The through hole 128 is oriented in the direction of an angle of 45° (see FIG. 5B). In this state, the first through hole 127 including the first cutout portion 127a faces the first feed passage 96, and the second through hole 128 including the second cutout portion 128a includes the second feed passage 97. To face. As a result, the first feeding flow passage 96 is opened (communication state), and the second feeding flow passage 97 is also opened (communication state). Therefore, the adhesive R is supplied from the first nozzle portion 24 (first nozzle port 32) via the first delivery passage 96 and the second nozzle portion 25 (second portion) via the second delivery passage 97. Each is discharged from the nozzle port 56).

At the second open position in which the operation knob 125 is further rotated counterclockwise (angle 90° from the first open position) counterclockwise (top view) from the fully open position, the valve body 122 has the first through hole 127. Are oriented at an angle of 90°, and the second through holes 128 are oriented at an angle of 0° (see FIG. 5(c)). In this state, the first feeding flow passage 96 is in a closed state (non-communication state), and the second feeding flow passage 97 is in an open state (communication state). Therefore, the adhesive R is discharged only from the second nozzle portion 25 (second nozzle port 56) via the second feed flow path 97. The operation knob 95 may be rotated clockwise in a top view.

[Modification]
Here, with reference to FIG. 6, the flow path switching mechanism unit 80 according to the first modified example of the first embodiment will be described. In this modified example, in the valve body 122, the first through hole 127 is formed to have the same diameter as the first feed passage 96, and the second through hole 128 is formed to have the same diameter as the second feed passage 97. Has been formed. Further, similarly to the above, the first through hole 127 and the second through hole 128 are orthogonal to each other around the axis.

In the first open position, in the valve body 122, the first through hole 127 faces the direction of an angle of 0° and the second through hole 128 faces the direction of an angle of 90° (see FIG. 6A). In this state, the first through hole 127 faces the first feed channel 96, and the first feed channel 96 is in an open state (communication state). On the other hand, the second through hole 128 is disengaged from the second feed flow passage 97, and the second feed flow passage 97 is in a closed state (non-communication state). Therefore, the adhesive R is discharged only from the first nozzle portion 24.

At the fully open position in which the operation knob 125 is rotated counterclockwise at an angle of 45° (top view) from the first open position, the valve body 122 has the first through hole 127 facing the direction of the angle of 45°, and the second through hole 127. The through hole 128 is oriented in the direction of an angle of 45° (see FIG. 6B). In this state, the first through hole 127 diagonally faces the first feed channel 96, and the second through hole 128 diagonally faces the second feed channel 97. As a result, the first feeding flow passage 96 is opened (communication state), and the second feeding flow passage 97 is also opened (communication state). Therefore, the adhesive R is ejected from the first nozzle portion 24 and the second nozzle portion 25, respectively.

At the second open position in which the operation knob 125 is further rotated counterclockwise (angle 90° from the first open position) counterclockwise (top view) from the fully open position, the valve body 122 has the first through hole 127. Are oriented at an angle of 90°, and the second through holes 128 are oriented at an angle of 0° (see FIG. 6C). In this state, the first feeding flow passage 96 is in a closed state (non-communication state), and the second feeding flow passage 97 is in an open state (communication state). Therefore, the adhesive R is discharged only from the second nozzle portion 25.

Next, with reference to FIGS. 7 and 8, the flow path switching mechanism section 80 according to the second modified example and the third modified example of the first embodiment will be described. In both modified examples, a first cutout groove 131 is formed in the valve body 122 in place of the first through hole 127, and a second cutout groove 132 is formed in place of the second through hole 128. .. The operation knob 125 of the second modification is rotated counterclockwise in a top view, and the operation knob 125 of the third modification is clockwise rotated in a top view. The second modified example and the third modified example are different in the rotational operation direction of the operation knob 125, so that the arrangement of the first cutout groove 131 and the second cutout groove 132 around the axis is different, but the basic structure is the same. Becomes Therefore, the second modification will be described below, and the description of the third modification will be omitted.

In the valve body main body 124 of the valve body 122, a first notch groove 131 cut out at an angle of 270° around the axis and a remaining angle of 90° corresponding to the first feed flow passage 96. A first non-cutout portion 133 is formed. Similarly, in the valve body portion main body 124, a second notch groove 132 cut out around the axis line at an angle of 270° and a remaining angle of 90° are provided corresponding to the second feed flow passage 97. The second non-cutout portion 134 is formed. The first notch groove 131 (and the first non-notch portion 133) and the second notch groove 132 (and the second non-notch portion 134) are positioned at an angle of 90° in the rotational operation direction of the operation knob 125. It is arranged with a shift.

In the valve body 122 in the first open position, the first notch groove 131 faces the first feed passage 96, and the second non-cut portion 134 faces the second feed passage 97 (FIG. 7(a)). In this state, the first feeding flow passage 96 is in an open state (communication state), and the second feeding flow passage 97 is in a closed state (non-communication state). Therefore, the adhesive R is discharged only from the first nozzle portion 24.

In the valve body 122 in the fully open position, the first cutout groove 131 faces the first feed passage 96 and the second cut groove 132 faces the second feed passage 97 (FIG. 7( See b)). In this state, the first delivery channel 96 is in an open state (communication state), and the second delivery channel 97 is also in an open state (communication state). Therefore, the adhesive R is ejected from the first nozzle portion 24 and the second nozzle portion 25, respectively.

In the valve body 122 in the second open position, the first non-notched portion 133 faces the first feed passage 96, and the second notch groove 132 faces the second feed passage 97 (FIG. 7(c)). In this state, the first feeding flow passage 96 is in a closed state (non-communication state), and the second feeding flow passage 97 is in an open state (communication state). Therefore, the adhesive R is discharged only from the second nozzle portion 25.

[Injection form]
For example, in FIG. 1, the switching operation of the flow path switching mechanism unit 80 is performed at two positions of the first floating unit 6a and the second floating unit 6b among the first floating unit 6a, the second floating unit 6b, and the third floating unit 6c. When “floating” occurs, the operation knob 125 is switched to the first open position and the adhesive R is discharged only from the first nozzle portion 24. In addition, when “floating” occurs at three locations of the first floating portion 6a, the second floating portion 6b, and the third floating portion 6c, or when “floating” occurs at the two locations of the first floating portion 6a and the third floating portion 6c. Is occurring, the operation knob 125 is switched to the fully open position, and the adhesive R is ejected from the first nozzle portion 24 and the second nozzle portion 25.

Further, in this case, when the volume of the third floating portion 6c is extremely large, after the adhesive R has been injected to the full open position to some extent, the operation knob is maintained while the injection posture of the adhesive injector 10 is maintained. 125 is switched to the second open position and the injection of the adhesive R is continued. That is, at the final stage of injection, the adhesive R is discharged only from the second nozzle portion 25 so that the adhesive R can be spread over the third floating portion 6c.

[Pinning method]
Next, with reference to FIG. 9 and FIG. 10, a pinning method using the above-mentioned adhesive injector 10 will be described. In this pinning method, as a pre-process, the outer wall 1 is keyed with a hammer or the like to search the first floating portion 6a, the second floating portion 6b and the third floating portion 6c, and the drilling position of the prepared hole 8 (the central portion of the tile). Marking on the surface) and perforation depth shall be determined. In the injection step described later, FIG. 9 shows the injection mode switched to the full open position, FIG. 10( a) shows the injection mode switched to the first open position, and FIG. 10( b) shows the injection mode. The injection modes switched to the two open positions will be described respectively.

In the pinning method, the outer wall 1 is perforated to a predetermined depth to form the pilot hole 8 (see FIG. 9A), and the opening 8a of the pilot hole 8 is sealed by the adhesive injector 10. An injection step of injecting the adhesive R into the pilot hole 8 (see FIGS. 9B and 9C) and a mounting step of inserting and installing the anchor pin 140 into the pilot hole 8 into which the adhesive R has been injected ( 9D)).

In the drilling step, a drilling tool 142 such as an electric drill equipped with a diamond bit is used to drill the prepared hole 8 in the outer wall 1 in accordance with the above marking. Concretely, the concrete skeleton 2 is perforated to a predetermined depth by penetrating the finishing material 5 (tile), the applied mortar 4 and the base mortar 3 to form the prepared hole 8 (see FIG. 9A). At that time, perforation is performed at right angles to the outer wall 1 and the depth of perforation to the concrete skeleton 2 is 30 mm or more. Further, the prepared hole 8 has a diameter slightly larger than the anchor pin 140 (a diameter of 1 to 2 mm) so that the anchor pin 140 can be loosely inserted. When using an anchor pin 140 described later, a spherical grinding bit is used at this point to chamfer the opening 8a of the prepared hole 8.

After the pilot hole 8 is formed, the cutting powder and the like remaining in the pilot hole 8 is cleaned and removed with a blower such as a blower. However, when cooling water is used for drilling and the cutting powder can be drained off together with the cooling water, cleaning is omitted. At this point, it is preferable to confirm the first floating portion 6a, the second floating portion 6b, and the third floating portion 6c through the prepared hole 8 using an endoscope or the like. Here, it is assumed that the first floating portion 6a, the second floating portion 6b, and the third floating portion 6c have been confirmed, and the flow path switching mechanism portion 80 is switched to the fully open position to inject the adhesive R.

In the injection step, first, the first nozzle portion 24 is first pulled out from the nozzle body 22 to the maximum extent, and the first nozzle portion 24 is inserted into the prepared hole 8. In the process of this insertion, when the tip of the first nozzle portion 24 reaches the hole bottom of the prepared hole 8, the first nozzle portion 24 relatively retracts. Then, the opening sealing portion 23 reaches the opening 8a of the prepared hole 8, and the taper portion 41 seals the opening 8a. In this state, the first nozzle opening 32 of the first nozzle portion 24 is located in the inner part of the prepared hole 8, and the second nozzle opening 56 of the second nozzle portion 25 is located in the vicinity of the opening 8a of the prepared hole 8. (See FIG. 9B).

Here, the operating lever 17 of the injector main body 11 is operated (pumping), the adhesive R is sent to the injection nozzle 12, and the injection of the adhesive R into the prepared hole 8 is started (see FIG. 9B). .. When the injection of the adhesive agent R is started, the adhesive agent R is discharged from the first nozzle opening 32 of the first nozzle section 24, filled from the inner part of the prepared hole 8, and spreads in a circular shape on the first floating section 6a. Then, the second floating portion 6b is filled so as to spread in a circular shape. Similarly, the adhesive R is discharged from the second nozzle opening 56 of the second nozzle portion 25 and is filled in the third floating portion 6c so as to spread in a circular shape (see FIG. 9C).

In this way, when the adhesive R spreads over the prepared hole 8, the first floating portion 6a, the second floating portion 6b and the third floating portion 6c, the pumping operation becomes heavy and the adhesive R is properly injected. It will be felt. Here, the opening sealing portion 23 is pulled away from the pilot hole 8 and the first nozzle portion 24 is slowly pulled out from the pilot hole 8. In this embodiment, since the adhesive R is injected from the inner part of the prepared hole 8, the air is not accumulated in the inner part, and the adhesive R is removed when the first nozzle portion 24 is pulled out. It does not leak from the opening 8a of the hole 8.

In the mounting step, the anchor pin 140 is inserted and mounted in the prepared hole 8 into which the adhesive R has been injected. In this case, the anchor pin 140 is preferably one in which the pin shaft portion 140a has all screws and the pin head portion 140b has a dish shape. The pin head 140b is preferably colored in the same color as the finishing material 5. The anchor pin 140 inserted into the prepared hole 8 is completely attached when the pin head 140b is immersed in the chamfered portion of the opening 8a and the top surface thereof is flush with the surface of the finishing material 5 (Fig. 9(d)). It should be noted that this flushing is preferably achieved by hitting and pushing a spatula or the like against the pin head 140b at the final stage of insertion. Then, when the attachment of the anchor pin 140 is completed, curing is performed until the adhesive R is cured.

FIG. 10A shows an injection mode in which the flow path switching mechanism 80 is switched to the first open position. It is assumed that "floating" occurs at two locations, the first floating portion 6a and the second floating portion 6b. When the injection of the adhesive agent R is started, the adhesive agent R is discharged from the first nozzle port 32 of the first nozzle section 24, filled from the inner part of the prepared hole 8, and then circularly formed on the first floating section 6a. The filling is performed so as to spread, and the second floating portion 6b is further filled so as to spread in a circular shape. When the adhesive R spreads over the prepared hole 8, the first floating portion 6a, and the second floating portion 6b, the pumping operation becomes heavy, and it is felt that the adhesive R is properly injected.

FIG. 10B shows an injection mode in which the flow path switching mechanism section 80 is switched to the second open position. When "floating" occurs at three locations of the first floating portion 6a, the second floating portion 6b, and the third floating portion 6c, or when "floating" occurs at the two locations of the first floating portion 6a and the third floating portion 6c. This is the case (in the figure, “floating” in three places), especially when the volume of the third floating portion 6c is extremely large (eg, large tiles or standard stone “dango”). Upholstery").

In this case, after the adhesive R has been injected to the full open position to some extent, the operation knob 125 is switched to the second open position while maintaining the injection posture of the adhesive injector 10. Continue to inject R. That is, when the adhesive R reaches the prepared hole 8, the first floating portion 6a and the second floating portion 6b, the operation knob 125 is switched from the fully opened position to the second opened position. If the injection of the adhesive R is continued here, the adhesive R is discharged only from the second nozzle portion 25 and is filled in the third floating portion 6c so as to spread in a circular shape.

As described above, according to the first embodiment, in the case where the adhesive R is discharged from the first nozzle opening 32 and the second nozzle opening 56 by operating the operation knob 125, the first nozzle opening. It is possible to take three injection forms, one is when ejected from 32 only and the other is when ejected only from the second nozzle port 56. Therefore, it is possible to efficiently inject the adhesive R in accordance with the number of “floats” occurring on the outer wall 1 and the properties thereof. Further, the flow path switching mechanism section 80 can have a simple structure with a small number of parts, and can be easily disassembled, washed, and assembled after the injection work.

Further, since the flow path switching mechanism section 80 is incorporated in the injector body 11 instead of the injection nozzle 12, the entire weight balance can be concentrated on the injector body 11 side (“mass concentration”). .. Further, since the size of the injection nozzle 12 is suppressed, the first nozzle portion 24 and the opening sealing portion 23 do not become difficult to see during the work. Therefore, the manipulability and operability of the adhesive injector 10 are not impaired.

[Second Embodiment]
Next, with reference to FIG. 11, an injector main body 11A of the adhesive injector 10 according to the second embodiment will be described. Note that, in the second embodiment, the parts different from the first embodiment will be mainly described. In the injector body 11A of the second embodiment, the valve seat portion 121A of the flow path switching mechanism portion 80A and the valve body portion 122A do not constitute a screw mechanism, and the valve body portion 122A simply rotates on the valve seat portion 121A. Mating is possible.

As shown in FIG. 11, the flow channel switching mechanism 80A is orthogonal to the first feed channel 96 and the second feed channel 97, and the first feed channel 96 and the second feed channel are provided on the inner peripheral wall. The flow path 97 has a valve seat portion 121A in the form of a columnar space that opens vertically, and a cylindrical valve body portion 122A that is fitted into the valve seat portion 121A and is rotated. Also in this case, the valve body 122A includes the valve body main body 124 that fits into the valve seat 121A, the operation knob 125 for rotating the valve body main body 124, and the operation knob 125. And a machine screw 126 fixed to the main body 124. Of course, in this case, the valve body main body 124 is integrally formed with the flange portion 144 on the upper portion, and the annular groove portion 145 is formed between the first through hole 127 and the second through hole 128.

On the other hand, a projecting thread part 146 is formed on the outer peripheral surface of the block part 87 so as to surround the valve body part body 124, and a cap-shaped screw 147 is screwed into the projecting thread part 146. Specifically, the valve main O-ring 148 is interposed between the protruding screw portion 146 and the flange portion 144, and in this state, the cap-shaped screw 147 presses the protruding screw portion 146 so as to press the flange portion 144. It is screwed into. This seals between the valve body 122A and the valve seat 121A that are rotated. Further, a valve sub auxiliary O-ring 149 is mounted on the annular groove 145 to seal between the first feeding flow passage 96 and the second feeding flow passage 97.

Then, in the valve body main body 124, as in the first embodiment, a first through hole 127 corresponding to the first feed channel 96 and a second through hole 128 corresponding to the second feed channel 97. And are formed through. Also in this case, the state in which the operation knob 125 is positioned at an angle of 0° corresponds to the first open position. Further, a position rotated by an angle of 45 degrees around the axis from the first open position corresponds to a full open position, and a position rotated by an angle of 45 degrees around the axis from the full open position (an angle of 90 degrees from the first open position). The rotated position) corresponds to the second open position. Therefore, the switching operation of the flow path switching mechanism section 80A is the same as in the first embodiment (see FIG. 5).

As described above, also in the second embodiment, when the adhesive R is discharged from the first nozzle opening 32 and the second nozzle opening 56 by operating the operation knob 125 by the rotation angle, only the first nozzle opening 32 is provided. It is possible to take three injection forms, one is when ejecting from the nozzle and the other is when ejecting only from the second nozzle port 56. Therefore, it is possible to efficiently inject the adhesive R in accordance with the number of “floats” occurring on the outer wall 1 and the properties thereof. Note that the modification of the first embodiment can also be applied to the second embodiment.

[Third Embodiment]
Next, with reference to FIGS. 12 and 13, an injector body 11B of the adhesive injector 10 according to the third embodiment will be described. Note that, in the third embodiment, parts different from the first embodiment will be mainly described. In the injector body 11B of the third embodiment, the block portion 87 is formed separately from the cap portion 84 and the casing body 86, and the block portion 87 is a casing body with the body O-ring 151 interposed. It is attached to 86 by screwing or the like.

Then, between the flow path switching mechanism 80B and the first discharge port 98 and the second discharge port 99, the first feed flow passage 96 and the second feed flow passage 97 form a single shared flow passage 152. I am configuring. That is, the shared flow path 152 communicates with the cylinder 85 via the first ejection port 98 and the second ejection port 99. Therefore, the flow channel switching mechanism 80B is arranged at the boundary between the first flow channel 96 and the second flow channel 97 and the shared flow channel 152. Further, in the valve body 122B, a single oval through hole 154 is formed instead of the first through hole 127 and the second through hole 128 described above.

As shown in FIGS. 12 and 13, the flow path switching mechanism section 80B is orthogonal to the first feed flow path 96 and the second feed flow path 97, and has the first feed flow path 96 and the first feed flow path 96 and the first feed flow path 96 on the inner peripheral wall. The 2 feed-in flow path 97 has a female screw-shaped valve seat portion 121B which is opened vertically and a male screw-shaped valve body portion 122B which is screwed into the valve seat portion 121B and rotated. Further, the valve body portion 122B is provided with a single elliptical through hole 154 having an elliptical cross section and corresponding to the first feeding channel 96 and the second feeding channel 97.

As shown in FIG. 13, the oval through hole 154 has a length extending from the first feeding flow passage 96 to the second feeding flow passage 97 in the cross-sectional direction, and is inclined with respect to the axial direction. .. Further, in this case, the shared flow path 152 communicates with the oval through hole 154 regardless of whether the valve body 122B is in the first open position, the fully open position, or the second open position. ing. Also in this case, the state where the operation knob 125 is positioned at an angle of 0° is the first open position, the position rotated by 45° around the axis from the first open position is the fully open position, and the position around the axis is from the fully open position. The position rotated by an angle of 45° (the position rotated by an angle of 90° from the first open position) is the second open position.

In the valve body portion 122B in the first open position, one end portion (lower end portion) of the elliptical through hole 154 faces the first feed flow passage 96, while the other end portion (upper end portion) is second feed. It is out of the inlet channel 97 (see FIG. 13A). In this state, the first feeding flow passage 96 is in an open state (communication state), and the second feeding flow passage 97 is in a closed state (non-communication state). Therefore, the adhesive R is discharged only from the first nozzle portion 24.

In the valve body portion 122B in the fully open position, one end portion (lower end portion) of the elliptical through hole 154 faces the first feeding flow passage 96, and the other end portion (upper end portion) of the second feeding portion. It faces the flow path 97 (see FIG. 13B). In this state, the first delivery channel 96 is in an open state (communication state), and the second delivery channel 97 is also in an open state (communication state). Therefore, the adhesive R is ejected from the first nozzle portion 24 and the second nozzle portion 25, respectively.

In the valve body portion 122B in the second open position, one end portion (lower end portion) of the oval through hole 154 is disengaged from the first feed flow passage 96, while the other end portion (upper end portion) is second feed. It faces the inlet channel 97 (see FIG. 13C). In this state, the first feeding flow passage 96 is in a closed state (non-communication state), and the second feeding flow passage 97 is in an open state (communication state). Therefore, the adhesive R is discharged only from the second nozzle portion 25.

As described above, also in the third embodiment, when the adhesive R is discharged from the first nozzle opening 32 and the second nozzle opening 56 by operating the operation knob 125 by the rotation angle, only the first nozzle opening 32 is provided. It is possible to take three injection forms, one is when ejecting from the nozzle and the other is when ejecting only from the second nozzle port 56. Therefore, it is possible to efficiently inject the adhesive R in accordance with the number of “floats” occurring on the outer wall 1 and the properties thereof. Further, the flow path switching mechanism section 80B can have a simple structure with a small number of parts, and can be easily disassembled, washed, and assembled after the injection work. The valve seat portion 121B and the valve body portion 122B of the third embodiment may have the same forms as those of the second embodiment (cylindrical space and column).

[Fourth Embodiment]
Next, with reference to FIG. 14, an injector body 11C of the adhesive injector 10 according to the fourth embodiment will be described. In addition, in the fourth embodiment, a part mainly different from the first embodiment will be described. In the injector main body 11C of the fourth embodiment, the flow path switching mechanism section 80C has a cylinder-shaped valve seat portion 121C and a plunger-shaped valve body portion 122C, and the valve body portion is different from the valve seat portion 121C. A switching operation is performed by sliding (advancing and retracting) 122C.

As shown in FIG. 14, the channel switching mechanism 80C is orthogonal to the first inlet channel 96 and the second inlet channel 97, and has the first inlet channel 96 and the second inlet channel on the inner peripheral wall. It has a cylindrical valve seat portion 121C in which the flow path 97 is opened vertically, and a plunger-shaped valve body portion 122C that is fitted into the valve seat portion 121C and is slid in the axial direction (vertical direction). ing.

The valve seat portion 121C vertically penetrates the block portion 87, including the first feeding flow passage 96 and the second feeding flow passage 97. A pair of sealing O-rings 161 are provided on the upper surface and the lower surface of the block portion 87 so as to be wound around the valve body portion 122C, and a pair of holding plates 162 are provided so as to press the sealing O-ring 161. ing. The pair of sealing O-rings 161 seal between the sliding valve body 122C and valve seat 121C.

The valve body 122C has a first annular groove 164 corresponding to the first inflow passage 96 and a second annular groove 165 corresponding to the second inflow passage 97. The first annular groove 164 is a groove having a semicircular cross section, and is formed to have the same diameter as the first feeding flow path 96. Similarly, the second annular groove 165 is a groove having a semicircular cross section, and is formed to have the same diameter as the second feeding flow path 97.

FIG. 14A shows a state in which the valve body 122C is in the fully open position, and the upper end and the lower end of the valve body 122C respectively project from the block portion 87 (holding plate 162). Further, FIG. 14B shows a state where the valve body 122C is in the first open position, the upper end of the valve body 122C is substantially flush with the holding plate 162, and the lower end is the block portion 87 ( It largely projects downward from the pressing plate 162). Further, FIG. 14C shows a state in which the valve body 122C is in the second open position, and the upper end of the valve body 122C largely projects upward from the block 87 (holding plate 162) and the lower end. Is substantially flush with the holding plate 162.

In the valve body 122C in the first open position of FIG. 14B, the second annular groove 165 faces the first inflow channel 96, while the first annular groove 164 includes the first inflow channel 96 and the second inflow channel 96. It deviates downward from the feed flow path 97. In this state, the first feeding flow passage 96 is in an open state (communication state), and the second feeding flow passage 97 is in a closed state (non-communication state). Therefore, the adhesive R is discharged only from the first nozzle portion 24.

In the valve body 122C at the fully open position in FIG. 14A, the first annular groove 164 faces the first inflow passage 96 and the second annular groove 165 faces the second inflow passage 97. .. In this state, the first delivery channel 96 is in an open state (communication state), and the second delivery channel 97 is also in an open state (communication state). Therefore, the adhesive R is ejected from the first nozzle portion 24 and the second nozzle portion 25, respectively.

In the valve body portion 122C in the second open position of FIG. 14C, the second annular groove 165 is disengaged upward from the first inflow passage 96 and the second inflow passage 97, while the first annular groove 164 is removed. It faces the second feed flow path 97. In this state, the first feeding flow passage 96 is in a closed state (non-communication state), and the second feeding flow passage 97 is in an open state (communication state). Therefore, the adhesive R is discharged only from the second nozzle portion 25.

Thus, also in the fourth embodiment, when the adhesive R is discharged from the first nozzle opening 32 and the second nozzle opening 56 by sliding the valve body 122C in the vertical direction, the first nozzle opening It is possible to take three injection forms, one is when ejected from 32 only and the other is when ejected only from the second nozzle port 56. Therefore, it is possible to efficiently inject the adhesive R in accordance with the number of “floats” occurring on the outer wall 1 and the properties thereof. Further, in the first annular groove 164 and the second annular groove 165, the cross-sectional area of the flow passage can be made equal to the cross-sectional area of the first inflow passage 96 and the second inflow passage 97, so that the flow passage friction can be reduced. The pressure loss due to the loss can be kept low. Moreover, the flow path switching mechanism 80C can be made to have a simple structure with a small number of parts, and the disassembly, cleaning, and assembly after the injection work can be easily performed.

Although not shown in the drawing, it is preferable to incorporate a click mechanism into the block portion 87 to click-position the valve body 122C at the first open position, the fully open position, and the second open position. The click mechanism includes, for example, three crown-shaped grooves formed in the valve body 122C, a sphere incorporated in the block 87 and selectively engaging with the three grooves, and a spring for urging the sphere. It is preferable.

[Fifth Embodiment]
Next, the injector body 11D of the adhesive injector 10 according to the fifth embodiment will be described with reference to FIGS. 15 and 16. In addition, in the fifth embodiment, mainly, portions different from the first embodiment will be described. In the injector body 11D of the fifth embodiment, the block portion 87 is formed separately from the cap portion 84 and the casing body 86, as in the third embodiment. Therefore, also in this case, the flow path switching mechanism 80D is arranged at the boundary between the first flow path 96 and the second flow path 97 and the shared flow path 152. Further, the valve body portion 122D is adapted to be rotated around the axis of the block portion 87.

As shown in FIGS. 15 and 16, the flow path switching mechanism section 80D is orthogonal to the first delivery flow path 96 and the second delivery flow path 97, and has the first delivery flow path 96 and the first delivery flow path 96 and the first delivery flow path 96 on the inner end wall. 2 A valve seat portion 121D having a columnar space in which the feed-in flow path 97 is opened vertically, and a valve body portion 122D that is fitted to the valve seat portion 121D and is rotated around the axis of the block portion 87 are provided. doing. The valve body portion 122D has a cylindrical valve body 171 arranged coaxially with the block portion 87, and a knob portion 172 for rotating the valve body 171. The valve body 171 is coaxially formed with an arcuate through hole 174 having a single arcuate cross section and corresponding to the first and second inflow channels 96 and 97.

As shown in FIG. 16, the arc-shaped through hole 174 has a length extending from the first feeding flow passage 96 to the second feeding flow passage 97 in the cross-sectional direction. That is, the arc-shaped through hole 174 is formed in a substantially semicircular cross section around the axis of the block portion 87. Further, the shared flow path 152 communicates with the arc-shaped through hole 174 regardless of whether the valve body 122D is in the first open position, the fully open position, or the second open position. The knob portion 172 is screwed into the valve body 171 disposed inside the block portion 87 from the outside of the block portion 87, and the block portion 87 allows the knob portion 172 to rotate. The slit 175 is formed.

On the other hand, as shown in FIG. 15, a large diameter rear O-ring 176 is provided in contact with the upstream side of the valve body 122D (valve body 171), and the shared flow path 152 is formed by the rear O-ring 176. It is sealed. Further, the valve body portion 122D (valve body 171) is in contact with the downstream side thereof, and has a first front O-ring 177 having a small diameter that seals the first inlet passage 96, and the second inlet passage 97. And a second front O-ring 178 having a small diameter for sealing the above. As described above, the first front O-ring 177, the second front O-ring 178, and the rear O-ring 176 prevent the adhesive R from leaking when the valve body 171 is rotated by the knob 172.

In this case, the state where the knob portion 172 is located at the center is the fully open position (see FIG. 16A), and from this state, the state where the knob portion 172 is rotated to the right by 45° is the first opening. It becomes the position (see FIG. 16B). On the other hand, the position where the knob 172 is rotated to the left by 45° from the fully opened position becomes the second opened position (see FIG. 16C).

In the first open position of FIG. 16B, the arcuate through hole 174 of the valve body portion 122D (valve body 171) faces the first inflow passage 96, while being disengaged from the second inflow passage 97. ing. In this state, the first feeding flow passage 96 is in an open state (communication state), and the second feeding flow passage 97 is in a closed state (non-communication state). Therefore, the adhesive R is discharged only from the first nozzle portion 24.

In the fully open position of FIG. 16A, the arcuate through holes 174 of the valve body portion 122D (valve body 171) face the first feed passage 96 and the second feed passage 97 at both ends. I'm out. In this state, the first delivery channel 96 is in an open state (communication state), and the second delivery channel 97 is also in an open state (communication state). Therefore, the adhesive R is ejected from the first nozzle portion 24 and the second nozzle portion 25, respectively.

In the second open position of FIG. 16C, the arcuate through hole 174 of the valve body portion 122D (valve body 171) is disengaged from the first inflow passage 96 and faces the second inflow passage 97. There is. In this state, the first feeding flow passage 96 is in a closed state (non-communication state), and the second feeding flow passage 97 is in an open state (communication state). Therefore, the adhesive R is discharged only from the second nozzle portion 25.

Thus, also in the fifth embodiment, when the adhesive R is discharged from the first nozzle opening 32 and the second nozzle opening 56 by rotating the valve body 122D, only the first nozzle opening 32 is provided. It is possible to take three injection forms, one is when ejecting from the nozzle and the other is when ejecting only from the second nozzle port 56. Therefore, it is possible to efficiently inject the adhesive R in accordance with the number of “floats” occurring on the outer wall 1 and the properties thereof.

[Sixth Embodiment]
Next, the injection nozzle 12A of the adhesive injector 10 according to the sixth embodiment will be described with reference to FIGS. 17 and 18. In addition, in the sixth embodiment, a part different from the first embodiment will be mainly described.

As shown in FIG. 17 and FIG. 18, the injection nozzle 12A of the sixth embodiment includes a mounting cover portion 21A mounted on the injector main body 11, a nozzle body 22A housed inside the mounting cover portion 21A, and a prepared hole. An opening sealing portion 23A that seals the opening 8a of No. 8 and a composite nozzle portion 27 (nozzle portion) having the functions of the first nozzle portion 24 and the second nozzle portion 25 described above are provided.

[Composite nozzle part]
The composite nozzle portion 27 is formed of a hard resin or the like, and includes a nozzle body 181, which extends in the forward direction, a flange portion 182 connected to the base end of the nozzle body 181, and a joint portion 183 connected to the base end of the flange portion 182. It is integrally formed. In addition, a first injection flow channel 185 that communicates with a first adhesive flow channel 61 of the nozzle body 22A, which will be described later, is formed inside the composite nozzle portion 27, and a first injection flow channel 185 that communicates with the second adhesive flow channel 62 is formed. Two injection flow paths 186 are formed.

A first nozzle port 187 communicating with the first injection flow path 185 is formed at the tip of the nozzle body 181. The first nozzle opening 187 is a portion for injecting the adhesive R into the inner portion of the prepared hole 8 and is formed in a shape cut obliquely. Further, a second slide port 188 communicating with the second injection flow channel 186 is formed on the base end side of the nozzle body 181. The second slip port 188 is a part for injecting the adhesive R in the vicinity of the opening 8a of the prepared hole 8, and is formed by cutting out a part of the nozzle body 181. The first injection flow path 185 and the second injection flow path 186 have the same diameter and are arranged in parallel and close to each other.

The joint portion 183 is formed with a pair of circular groove portions 191 that are recessed from the nozzle body 22A side, and one circular groove portion 191 connects the first injection flow channel 185 and the first adhesive flow channel 61. A first circular channel 192 that communicates is configured, and the other circular groove 191 configures a second circular channel 193 that communicates the second injection channel 186 and the second adhesive channel 62 (FIG. 18). A sealing packing 195 having two circular openings connected to the first adhesive flow path 61 and the second adhesive flow path 62 is provided between the joint 183 and the nozzle body 22A.

The nozzle body 181 made of hard resin or the like has a tapered appearance. In this case, the nozzle body 181 has a length that matches the expected deepest pilot hole 8, and normally the tip side is appropriately cut and used according to the depth of the pilot hole 8 at each site. ing. Therefore, on the outer peripheral surface of the nozzle body 181, a plurality of cut lines 201 that indicate the axial cut position are formed (see FIG. 18A).

A numerical value 202 corresponding to the depth of the prepared hole 8 is clearly shown on each cut line 201. For example, it is preferable that the numerical value 202 is set in units of 10 mm or 5 mm. In this case, the numerical value 202 is the distance from the opening 8a of the prepared hole 8 to the hole bottom, and when the adhesive R is injected, the opening sealing portion 23A (tapered portion 41 described later) that seals the opening 8a is formed. The dimensions are displayed from a predetermined position. The operator cuts the nozzle body 181 obliquely according to the depth of the prepared hole 8.

[Opening sealing part]
The opening sealing portion 23A is a portion that seals the opening 8a of the prepared hole 8 when the adhesive R is injected, and is made of a chemically resistant elastic material such as fluororubber. The opening sealing portion 23A is integrally formed with a tapered tapered portion 41 that directly seals the opening 8a and a straight portion 42 that is continuous to the base end side of the tapered portion 41. The opening sealing portion 23A is mounted so as to be fitted into the base end portion of the composite nozzle portion 27.

[Nozzle body]
As shown in FIG. 17, the nozzle body 22A is formed of stainless steel, steel, or the like into a substantially columnar shape. Inside the nozzle body 22A, the first adhesive flow path 61 communicating with the first injection flow path 185 (and the first circular flow path 192) on the downstream side and the second injection flow path 186 (and the first injection flow path 186 on the downstream side). And a second adhesive flow path 62 communicating with the two circular flow paths 193). The first adhesive flow path 61 and the second adhesive flow path 62 are formed to have the same diameter and are arranged at 180° point symmetry positions with respect to the axial center of the nozzle body 22A.

A large-diameter concave portion 205 to which the joint portion 183 of the composite nozzle portion 27 is joined is formed on the tip end side of the nozzle body 22A, and the large-diameter concave portion 205 is provided with the above-mentioned sealing packing 195 in between. The composite nozzle portion 27 is joined to 22A. Although details will be described later, when the mounting cover portion 21A is screwed (mounted) to the injector main body 11, the flange portion 182 and the joint portion 183 of the composite nozzle portion 27 are strongly attracted to the nozzle body 22A side. As a result, the joint portion 183 of the composite nozzle portion 27 comes into close contact with one surface of the sealing packing 195, and the large-diameter concave portion 205 of the nozzle body 22A comes into close contact with the other surface of the sealing packing 195.

At the base end of the nozzle body 22A, a first recess 71 (first joining portion) is formed which is connected to the upstream end of the first adhesive flow path 61, and is connected to the upstream end of the second adhesive flow path 62. A second concave portion 72 (second joint portion) is formed. The first recess 71 is formed to have a diameter larger than that of the first adhesive flow path 61 coaxially with the first adhesive flow path 61, and the first O-ring 73 is attached to this portion. Similarly, the second recess 72 is formed to have a diameter larger than that of the second adhesive flow path 62 coaxially with the second adhesive flow path 62, and the second O-ring 74 is attached to this portion.

The first recess 71 (first O-ring 73) and the second recess 72 (second O-ring 74) are arranged at the same position in the axial direction (front-back direction). Then, the first joint joint 88 (first joint receiving portion) of the injector body 11 is joined to the first recess 71 (first joint portion) with the first O-ring 73 interposed therebetween, and the second recess portion is formed. The second joint joint 89 (second joint receiving portion) of the injector body 11 is joined to 72 (second joint portion) with the second O-ring 74 interposed.

[Mounting cover part]
The attachment cover portion 21A is a portion for attaching the injection nozzle 12A to the injector main body 11, and is formed of stainless steel, steel, or the like in a cylindrical shape. The mounting cover portion 21A includes a cover portion 76 that accommodates the nozzle body 22A and the flange portion 182 of the composite nozzle portion 27 therein, a hooking portion 77 provided at a tip end portion of the cover portion 76, and a base end portion of the cover portion 76. Is formed integrally with the rear female screw portion 78 provided on the. The hook portion 77 hooks the flange portion 182 from the outside, and in this state, the rear female screw portion 78 is screwed onto the tip portion of the injector body 11.

When the mounting cover portion 21A is screwed (mounted) to the injector body 11, the flange portion 182 (and the joint portion 183) and the nozzle body 22A are attracted to the injector body 11. As a result, the composite nozzle portion 27 and the nozzle body 22A come into close contact with each other via the sealing packing 195, and the first adhesive flow path 61 and the first circular flow path 192, and the second adhesive flow path 62. And the second circular flow path 193 are sealed. Further, the nozzle body 22A and the injector body 11 are in close contact with each other via the first O-ring 73 and the second O-ring 74. At the same time, the first adhesive flow path 61 and the (first internal flow path 102 of the first joint) 88 communicate with each other via the first O-ring 73, and the second adhesive flow via the second O-ring 74. The agent flow passage 62 and the second joint joint 89 (the second joint inner passage 103) communicate with each other.

By the pumping, the adhesive R fed from the injector main body 11 in a branched state is fed into the first adhesive flow path 61 and the second adhesive flow path 62. The adhesive R fed into the first adhesive flow path 61 passes through the first circular flow path 192 and the first injection flow path 185 and is discharged from the first nozzle port 187. Similarly, the adhesive R fed into the second adhesive flow path 62 is discharged from the second nozzle port 188 through the second circular flow path 193 and the second injection flow path 186.

Thus, also in the sixth embodiment, when the adhesive R is discharged from the first nozzle opening 187 and the second nozzle opening 188, when it is discharged only from the first nozzle opening 187, and the second nozzle opening 188. It is possible to take three forms of injection in the case of discharging from only one, and it is possible to efficiently inject the adhesive R in accordance with the properties such as the number of "floats" occurring on the outer wall 1 and the generation site.

Further, the composite nozzle portion 27 can be formed of resin or the like at a low cost, and by appropriately cutting the composite nozzle portion 27 in accordance with the prepared hole 8, the adhesive R can be appropriately injected into the prepared hole 8. The first injection flow channel 185 and the second injection flow channel 186 have a straight shape, but may have a tapered shape. Further, the second injection flow path 186 may have a smaller diameter than the first injection flow path 185.

As described above, in the adhesive injector 11 in these embodiments, in consideration of cleaning after the operation (washing off the adhesive R with the solvent), the main components other than the opening sealing portion 23 are made of a metal material such as stainless steel. It is supposed to be formed. However, the main constituent parts may be made of plastic, ceramic, or the like as long as the material has chemical resistance to the solvent.

In addition to the above-described embodiment, the flow path switching mechanism section 80 may be configured with two general valves (ball valve, gate valve, butterfly valve, etc.). In such a case, the opening and closing angles of the valve bodies are different between the two (two) valves.

DESCRIPTION OF SYMBOLS 1... Outer wall, 8... Prepared hole, 8a... Opening part, 10... Adhesive injector, 11, 11A, 11B, 11C, 11D... Injector body, 12, 12A... Injection nozzle, 15... Adhesive storage part, 16 ... Pump section, 17... Operating lever, 21, 21A... Mounting cover section, 22, 22A... Nozzle body, 23, 23A... Opening sealing section, 24... First nozzle section, 25... Second nozzle section, 27... Composite Nozzle part, 32... First nozzle port, 33... First injection channel, 55... Second injection channel, 56... Second nozzle port, 61... First adhesive channel, 62... Second adhesive channel , 71... First recess, 72... Second recess, 73... First O-ring, 74... Second O-ring, 80, 80A, 80B, 80C, 80D... Flow path switching mechanism section, 83... Pump casing, 87... Block section , 88... First joint joint, 89... Second joint joint, 96... First inlet passage, 97... Second inlet passage, 98... First outlet, 99... Second outlet 121, 121A , 121B, 121C, 121D... Valve seat part, 122, 122A, 122B, 122C, 122D... Valve body part, 124... Valve body part body, 125... Operation knob part, 127... First through hole, 128... Second penetration Holes, 131... First notched groove, 132... Second notched groove, 140... Anchor pin, 152... Shared flow channel, 154... Elliptical through hole, 164... First annular groove, 165... Second annular groove 174... Arc-shaped through hole, 185... First injection channel, 186... Second injection channel, 187... First nozzle port, 188... Second nozzle port, R... Adhesive

Claims (11)

For a pinning method, which comprises an injection nozzle for injecting an adhesive while sealing the opening of a prepared hole formed by drilling a wall body to a predetermined depth, and an injector main body to which the injection nozzle is detachably mounted. An adhesive injector of
The injection nozzle is
A nozzle part having a first nozzle opening facing the inner part of the prepared hole and a second nozzle opening facing the vicinity of the opening part of the prepared hole;
A nozzle body that holds the nozzle portion and has a first adhesive flow path communicating with the first nozzle opening and a second adhesive flow path communicating with the second nozzle opening;
The injector body is
An adhesive storage part for storing adhesive,
A pump section for discharging the adhesive sucked from the adhesive storage section through the suction port from the discharge port;
A first feed channel that communicates an upstream side with the discharge port and a downstream side with the first adhesive channel;
A second feed channel that communicates the upstream side with the discharge port and the downstream side with the second adhesive channel;
A fully open position that opens the first feed channel and opens the second feed channel and a first open position that opens the first feed channel and closes the second feed channel A flow path switching mechanism section that switches the flow path of the adhesive between a position and a second open position that closes the first flow path and opens the second flow path. An adhesive injector for the pinning method, which is characterized by that. The said nozzle part consists of the 1st nozzle part which has the said 1st nozzle opening, and the 2nd nozzle part which has the said 2nd nozzle opening, The adhesive agent for pinning methods of Claim 1 characterized by the above-mentioned. Injector. The first feeding channel and the second feeding channel are formed so as to be parallel to each other in the pump casing of the pump section,
The pinning method according to claim 1 or 2, wherein the flow path switching mechanism section is provided in the first casing and the second inlet channel in the pump casing. Glue injector. The nozzle body has, at a base end portion thereof, a first joint portion connected to the first adhesive flow path and a second joint portion connected to the second adhesive flow path,
The pump casing has a first joint receiving portion connected to the first feed passage and a second joint receiving portion connected to the second feed passage at a tip portion,
The injection nozzle is detachably attached to the injector body in a state where the first joint portion is joined to the first joint receiving portion and the second joint portion is joined to the second joint receiving portion. The adhesive injector for the pinning method according to claim 3, wherein the adhesive injector is used. The flow path switching mechanism section,
A columnar valve seat portion that is orthogonal to the first feed passage and the second feed passage and has the first feed passage and the second feed passage opened in the inner peripheral wall; A cylindrical valve body part that is fitted to the valve seat part and is rotated about an axis;
The valve body is
A first through hole corresponding to the first feed channel and a second through hole corresponding to the second feed channel;
The valve body portion is configured to be rotationally operable at three rotation angle positions corresponding to the full open position, the first open position, and the second open position,
The first through hole and the second through hole have a through angle around the axis so that the first through hole and the second through hole are in the full open position, the first open position, and the second open position, respectively, at the three rotation angle positions. The adhesive injector for the pinning method according to claim 3 or 4, which is different. The flow path switching mechanism section,
A columnar valve seat portion that is orthogonal to the first feed passage and the second feed passage and has the first feed passage and the second feed passage opened in the inner peripheral wall; And a cylindrical valve body part that is fitted to the valve seat part and that is rotated around an axis,
The valve body is
A first notch groove corresponding to the first feed channel, and a second notch groove corresponding to the second feed channel,
The valve body portion is configured to be rotationally operable at three rotation angle positions corresponding to the full open position, the first open position, and the second open position,
The first cutout groove and the second cutout groove are cut around the axis so as to be respectively in the full open position, the first open position and the second open position at the three rotation angle positions. The adhesive injector for the pinning method according to claim 3 or 4, wherein the notch angles are different. The flow path switching mechanism section,
A columnar valve seat portion that is orthogonal to the first feed passage and the second feed passage and has the first feed passage and the second feed passage opened in the inner peripheral wall; And a cylindrical valve body part that is fitted to the valve seat part and that is rotated around an axis,
The valve body portion has an elliptical through hole having a single and elliptical cross section corresponding to the first feeding channel and the second feeding channel,
The valve body portion is configured to be rotationally operable at three rotation angle positions corresponding to the full open position, the first open position, and the second open position,
The elliptical through hole extends obliquely with respect to the axial direction so as to be in the full open position, the first open position, and the second open position, respectively, at the three rotation angle positions. The adhesive injector for the pinning method according to claim 3 or 4. The valve seat portion has a female screw shape,
The adhesive injector for a pinning method according to any one of claims 5 to 7, wherein the valve body portion has a male screw shape that is screwed into the valve seat portion. The flow path switching mechanism section,
A cylindrical valve seat portion that is orthogonal to the first feed passage and the second feed passage and has the first feed passage and the second feed passage opened in an inner peripheral wall; And a plunger-shaped valve body portion that is slidably operated in the axial direction while being fitted to the valve seat portion,
The valve body is
A first annular groove and a second annular groove that selectively face the first inlet channel and the second inlet channel,
The valve body is configured to be slidable into three advancing/retreating positions corresponding to the full open position, the first open position, and the second open position,
The first annular groove and the second annular groove are located at the full open position, the first open position, and the second open position, respectively, in the three advancing/retreating positions, so that the first feed channel is formed. The adhesive injection device for the pinning method according to claim 3 or 4, wherein the adhesive injection device is arranged in the axial direction with the same distance as the distance between the second feeding channel and the second feeding channel. The flow path switching mechanism section,
A columnar space-shaped valve seat portion that is orthogonal to the first delivery channel and the second delivery channel, and has the first delivery channel and the second delivery channel opened in an inner end surface wall; And a cylindrical valve body part that is fitted around the valve seat part and is rotated about an axis.
The valve body portion has, on the same axis, an arcuate through hole having a single and arcuate cross-section corresponding to the first and second inflow channels.
The valve body is configured to be pivotally operable at three pivotal angular positions corresponding to the full open position, the first open position, and the second open position,
The arc-shaped through-hole is located at the full open position, the first open position, and the second open position at the three rotation angle positions, respectively, so that the first feed passage and the second feed path are provided. The adhesive injection device for a pinning method according to claim 3 or 4, wherein the adhesive injection device is formed in an arc shape of a substantially semicircle centered on an intermediate point with the flow path. A pinning method for repairing the wall body using the adhesive injector for the pinning method according to claim 1.
A perforating step of forming the pilot hole by perforating the wall body to a predetermined depth,
By the adhesive injector, an injection step of injecting an adhesive into the prepared hole while sealing the opening of the prepared hole,
A pinning method, comprising: a mounting step of inserting and mounting an anchor pin into the prepared hole into which the adhesive is injected.

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