JP6893609B2 - Injection device - Google Patents

Description

The present invention relates to an injection device used for injecting an injection material in a pinning method for preventing peeling of a floating portion of an outer wall finishing mortar, pasted mortar, tile, or the like.

The pinning method is a method of preventing the peeling of the floating portion of the outer wall finishing mortar, pasted mortar, tile, or the like. In the pinning method, an epoxy resin injection material and a stainless steel pin are used in combination to integrate the skeleton, the stainless steel pin, and the floating part.

The specific procedure of the pinning method is as follows.
(1) Confirmation of floating part (2) Arrangement of pins and determination of number (3) Drilling (4) Cleaning inside the drilled hole (5) Dry curing (6) Injection of injection material (7) Pin insertion (8) Surface finishing (9) Completed after cleaning

Of the above steps (1) to (9), (6) injection material injection is performed by injecting the injection material into the perforated hole or the floating portion while applying pressure with a dedicated injection gun. FIG. 8 is a side view of a conventional injection gun. As shown in FIG. 8, in the conventional injection gun 100, a piston (not shown) provided in the cylinder 101 is urged toward the cylinder head 102 by a coil spring, and the injection is filled in the cylinder 101 by grasping the lever 103. The structure is such that the material is poured out from the tip of the injection nozzle 104 provided in the cylinder head 102.

FIG. 9 is an explanatory view showing a state of resin injection using the injection gun 100. As shown in FIG. 9, the injection nozzle 104 of the injection gun 100 is pressed into the perforated holes 113 drilled in the sticking mortar 111 and the tile 112 provided on the surface of the skeleton 110, and the perforated holes 113 are injected while being sealed. Inject the material. As a result, the injection material is filled into the perforated hole 113 and the floating portion 114.

However, when the injection material is injected, if the injection pressure is applied too much, there is a risk that the attached mortar 111 and the tile 112 will be damaged, and the sound portion will be lifted (co-floating) or peeled off. Conventionally, for example, the injection nozzle described in Patent Document 1 has been developed as a device for preventing such excessive injection pressure. This injection nozzle is a pressure that notifies that the internal pressure of the adhesive has reached a predetermined pressure when the internal pressure of the adhesive in the adhesive flow path formed inside the nozzle body reaches a predetermined pressure. It is equipped with a notification means.

Further, for example, Patent Document 2 includes a second chamber for generating an injection pressure of the injection material on the rear side of the first chamber for accommodating the injection material of the cylinder portion, and a second chamber to the second chamber. An injection device capable of adjusting the pressure of the injection material by adjusting the pressure of the piping system of the above is described.

Japanese Unexamined Patent Publication No. 2014-70450 Japanese Patent No. 2905139

As described above, when the injection material is injected, if the injection pressure is applied too much, there is a risk of damage to the attached mortar 111 and the tile 112, and the occurrence of floating (co-floating) or peeling of the sound portion. That is, when the injection material is injected by the injection gun at an injection pressure exceeding the adhesive strength of the healthy part even though there is an adhesive strength standard (0.4 ^{N / mm 2} or 0.6 N / mm ^{2) of the healthy part,} There is a risk that the sticking mortar 111 and the tile 112 will be further lifted. In particular, since the adhesive strength of the mortar is reduced where there is a floating portion, care must be taken not to apply excessive injection pressure.

Therefore, in the present invention, it is possible to confirm that the injection material is surely filled in the perforated hole, and it is possible to prevent damage (co-floating), peeling, etc. due to excessive pressure. The purpose is to provide.

The injection device of the present invention is an injection device that injects an injection material into a perforation hole from the tip of an injection nozzle inserted into the perforation hole, is an elastic body that the injection nozzle penetrates and slides, and the injection nozzle is inserted. It has an elastic body that is pressed against the perforated hole to be sealed and a pressing means that presses the elastic body toward the tip end side of the injection nozzle by a preset pressure.

In the injection device of the present invention, the pressure of the pressing means is set in advance to the filling pressure of the injection material to be filled in the perforated hole. Then, in a state where the injection nozzle is inserted into the perforation hole, the elastic body that can slide through the injection nozzle is pressed toward the tip side of the injection nozzle by a pressure preset by the pressing means. It is pressed against the perforated hole to seal the perforated hole. When the injection material is injected from the injection nozzle in this state, the injection material permeates into the perforated hole and the floating portion. When the injection material is filled in the perforated hole and the floating portion, the pressure in the perforated hole increases, and when the preset filling pressure is reached, the pressing force by the pressing means loses the pressure of the injection material and the elastic body is pushed back. As a result, the injection material leaks from the perforated hole, so that a pressure higher than the preset filling pressure is not applied to the perforated hole.

Here, it is desirable that the pressing means is an air cylinder whose pressure can be adjusted. Thereby, by adjusting the pressure of the air cylinder, it is possible to adjust the filling pressure of the injection material to be filled in the perforated hole.

(1) According to the injection device of the present invention, when the pressure of the injection material injected into the perforation hole reaches the filling pressure, the injection material leaks from the perforation hole, so that the injection material is surely filled in the perforation hole. In addition to being able to confirm that, it is possible to prevent damage or peeling due to excessive pressure being applied without applying a pressure higher than a preset filling pressure into the perforated hole.

(2) Since the pressing means is an air cylinder whose pressure can be adjusted, it is possible to adjust the filling pressure of the injection material to be filled in the perforated hole by adjusting the pressure of the air cylinder.

It is a perspective view of the injection device in embodiment of this invention. It is a perspective view which shows the state of the pressure adjustment of the injection device of FIG. It is explanatory drawing which shows the slide operation of a rubber stopper. It is explanatory drawing which shows the state of the injection material injection using the injection device in this embodiment. It is explanatory drawing which shows the state of the injection material injection using the injection device in this embodiment. It is explanatory drawing which shows the state of the injection material injection using the injection device in this embodiment. It is explanatory drawing which shows the state of the injection material injection using the injection device in this embodiment. It is a side view of the conventional injection gun. It is explanatory drawing which shows the state of resin injection using the conventional injection gun.

FIG. 1 is a perspective view of an injection device according to an embodiment of the present invention, FIG. 2 is a perspective view showing a state of pressure adjustment of the injection device of FIG. 1, and FIG. 3 is an explanatory view showing a sliding operation of a rubber stopper.

In FIG. 1, the injection device 1 according to the embodiment of the present invention includes a main body cylinder 10 filled with an injection material such as an epoxy resin, an injection nozzle 11 provided in a cylinder head 10A of the main body cylinder 10, and an injection nozzle 11. It has a rubber stopper 12 as an elastic body that can slide through the rubber stopper 12 and an air cylinder 13 as a pressing means for pressing the rubber stopper 12 toward the tip end side of the injection nozzle 11.

A piston (not shown) is urged toward the cylinder head 10A by a coil spring in the main body cylinder 10. The operator inserts the injection nozzle 11 into the drilling hole and grips the lever 10B so that the injection material filled in the main body cylinder 10 is poured into the drilling hole from the tip of the injection nozzle 11.

The rubber stopper 12 has a tapered shape and is pressed against a perforated hole into which the injection nozzle 11 is inserted to seal the rubber stopper 12. The rubber stopper 12 is slidably supported by the slider 14 in the extending direction of the injection nozzle 11. The slider 14 is rotatably supported around a shaft 15A at a substantially central portion of the swing arm 15. One end of the swing arm 15 is rotatably supported by the cylinder head 10A with the shaft 16A as the center of rotation, and the arm 16 rotatably supported by the shaft 15B as the center of rotation. A rod 13A of an air cylinder 13 is rotatably supported at the other end of the swing arm 15 with the shaft 15C as the center of rotation.

The air cylinder 13 presses the rubber stopper 12 toward the tip end side of the injection nozzle 11 by a preset pressure. The air cylinder 13 is rotatably supported on a cylinder mount 17 fixed to the cylinder head 10A with the shaft 17A as the center of rotation. As shown in FIG. 3, when the air cylinder 13 is expanded and contracted, the swing arm 15 swings around the shaft 15B, and the rubber stopper 12 slides along the injection nozzle 11. As shown in FIG. 2, the air cylinder 13 connects the air hose 20 to the air cylinder 13 and adjusts the amount of compressed air to be filled in the air cylinder 13 while observing the air gauge 21 provided on the air hose 20. Therefore, the pressure for pressing the rubber stopper 12 can be adjusted.

Next, a method of injecting the injection material by the injection device 1 having the above configuration will be described. 4 to 7 are explanatory views showing a state of injection of an injection material using the injection device 1.

First, the floating portion 114 on the surface of the skeleton 110 is confirmed, the arrangement and the number of pins are determined, and as shown in FIG. 4, a hole 113 is drilled in the skeleton 110 including the sticking mortar 111 and the tile 112. As shown in FIG. 5, the injection nozzle 11 of the injection device 1 is inserted into the perforated hole 113 until the tip of the injection nozzle 11 hits the deepest part of the perforation hole 113. The pressure of the air cylinder 13 is set in advance to a pressure corresponding to the filling pressure of the injection material to be filled into the drilling hole 113.

At this time, the rubber stopper 12 is pressed toward the tip end side of the injection nozzle 11 by the pressure of the air cylinder 13 set in advance, and is pressed against the drilling hole 113, so that the drilling hole 113 is in a sealed state. In this state, when the lever 10B is grasped and the injection material is injected into the perforation hole 113 from the injection nozzle 11, the injection material 30 permeates into the perforation hole 113 and the floating portion 114 as shown in FIG.

Then, when the injection material 30 is filled in the perforated hole 113 and the floating portion 114, the pressure in the perforated hole 113 increases and reaches the preset pressure of the air cylinder 13 (filling pressure in the perforated hole 113). Then, the pressing force of the air cylinder 13 loses to the pressure of the injection material 30, the rubber stopper 12 is pushed back, and the injection material 30 leaks from the drilling hole 113 as shown in FIG. Thereby, it can be confirmed that the injection material 30 is surely filled in the perforated hole 113. Further, since a pressure higher than the preset filling pressure is not applied to the perforated hole 113, it is possible to prevent damage or peeling due to excessive pressure.

Further, in the injection device 1 in the present embodiment, it is possible to adjust the filling pressure of the injection material 30 to be filled in the perforated hole 113 by adjusting the pressure of the air cylinder 13, and the skeleton 110 (building) Anyone can easily work with the appropriate injection pressure according to each situation by adjusting the pressure according to the outer wall condition.

In the present embodiment, the rubber stopper 12 has been described as an example of an elastic body that is pressed against the perforated hole 113 to be sealed, but the perforated hole 113 can be sealed as in the case of the rubber stopper 12. Any material and shape can be used as long as it is a product. Further, although the air cylinder 13 has been described as an example of the pressing means, it can be used as long as the pressure can be adjusted and the pressure in the drilling hole 113 is pushed back when the preset filling pressure is reached. ..

The injection device of the present invention is useful for injecting an injection material in a pinning method for preventing peeling of a floating portion of an outer wall finishing mortar, pasted mortar, tile, or the like.

1 Injection device 10 Main body cylinder 10A Cylinder head 10B Lever 11 Injection nozzle 12 Rubber stopper 13 Air cylinder 13A Rod 14 Slider 15 Swing arm 16 Arm 17 Cylinder mount

Claims (4)

An injection device that injects an injection material into the perforated hole from the tip of an injection nozzle inserted into the perforated hole.
An elastic body that can slide through the injection nozzle and is pressed against the perforated hole into which the injection nozzle is inserted to seal it.
It is a pressing means that presses the elastic body toward the tip end side of the injection nozzle by a preset pressure , and when the pressure in the perforated hole reaches the preset pressure, the pressing pressure is the pressure of the injection material. An injection device having a pressing means for pushing back the elastic body. An injection device that injects an injection material into the perforated hole from the tip of an injection nozzle inserted into the perforated hole.
An elastic body that is slidable through the injection nozzle and is pressed against the perforated hole into which the injection nozzle is inserted to be sealed.
An injection device having a pressing means for pressing the elastic body toward the tip end side of the injection nozzle with a preset pressure, and a pressing means including an air cylinder capable of adjusting the pressure. A slider that supports the elastic body and
The injection device according to claim 1 or 2, further comprising a swing arm that pivotally supports the slider and a swing arm that is swung by the pressing means. An injection device that injects an injection material into the perforated hole from the tip of an injection nozzle inserted into the perforated hole.
An elastic body that is slidable through the injection nozzle and is pressed against the perforated hole into which the injection nozzle is inserted to be sealed.
A pressing means that presses the elastic body toward the tip end side of the injection nozzle with a preset pressure , and
A slider that supports the elastic body and
An injection device having a swing arm that pivotally supports the slider, and a swing arm that swings by the pressing means.

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