JP2000055295A - Fluid material discharge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify piping structure to supply and exhaust air, to reduce noise generated at the time when a spool and a piston reciprocate and to improve working efficiency. SOLUTION: This discharge device discharges a fluid material stored in a cartridge 15 installed in the middle of a nozzle 10 after sucking it into the nozzle 10 by reciprocating a piston by alternately supplying and exhausting air to and from left and right air chambers in an air cylinder 25 and reciprocating a rod fixed on the piston in the inside of the nozzle 10 connected to the air cylinder 25. In this case, a hole to supply and exhaust air to and from the inside of the air cylinder 25 is drilled on either one of left and right side surfaces of the air cylinder 25, a plate on which a groove part to alternately supply and exhaust air to the left and right air chambers in the air cylinder 25 is installed on the side surface of the air cylinder 25, and the piston is driven by supplying and exhausting air through a channel arranged to constitute a desired piping structure to be formed of the groove part and the side surface of the air cylinder 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid material discharging apparatus for discharging a fluid material containing a high-viscosity material such as a liquid or an adhesive.

[0002]

2. Description of the Related Art Reinforced concrete used as a building material is not a permanent material, and it is known that it deteriorates with time and loses strength or cracks. This has become a problem for high-rise apartment buildings, concrete bridges and other buildings. In this case, it would be good if the old buildings such as condominiums could be demolished and newly rebuilt, but in reality it is often difficult due to economic problems and surrounding environmental problems. At present, water must be shut down and water must be reused.

[0003] In such repair work, a method of recovering the strength by injecting an adhesive into a crack or a deteriorated portion which has occurred mainly is adopted. However, since the adhesive used in such renovation work has a high viscosity, it is difficult to inject the adhesive into the corresponding location using a normal pump,
At present, a manual grease pump must be used. For this reason, at the site, the adhesive is manually supplied from a large pail can to a hand-operated grease pump with a spatula, and the work is limited to about 500 places per day. In addition, since many adhesives have the property that the solvent is volatile and explodes, it is always limited to work in open places.In addition, since a manual pump is used, both hands are blocked and high places and There is a problem that work in a narrow place is extremely difficult.

On the other hand, as an apparatus for extruding a high-viscosity fluid material such as an adhesive, there is a high-viscosity material extruding apparatus disclosed in Japanese Utility Model Application Laid-Open No. 2-31997. However, when this is actually used, the adhesive can be pushed out, but since the piston after being pushed out is returned by a spring, the friction between the piston and the cylinder increases, and the return speed of the piston slows down In addition, when the force of the spring was increased, the injection force of the adhesive was weak this time, and it was not practical. Further, there is a problem that the structure is complicated and the disassembly and cleaning is difficult.

Therefore, the applicants open and close an opening / closing valve for stopping the supply of air, and alternately feed air into left and right air chambers provided on both sides of the piston via a switching valve, thereby moving the piston. Invented a small portable high-viscosity ejection device with a reciprocating structure, a device that can eject even high-viscosity materials such as adhesives, and is compact and does not require on-site filling of pumps. A patent application was filed (Japanese Patent Application No. 10-128380) in order to provide an inexpensive device which can improve the performance and has a simple structure, easy disassembly and cleaning.

[0006]

However, providing a pipe for operating the opening / closing valve to supply and exhaust air to / from the air cylinder through the switching valve inside the apparatus complicates the piping structure. Therefore, in the present invention, it is another object of the present invention to provide a fluid material discharging apparatus capable of discharging a fluid material including a liquid as well as a high-viscosity material such as an adhesive while simplifying the piping structure. And Another object of the present invention is to provide a fluid material discharging apparatus in which noise is generated when a spool and a piston disposed inside a switching valve reciprocate, so that the noise is reduced. Furthermore, to make the handling of the device simple,
To provide small, portable devices,
It is an object of the present invention to provide a stationary type fluid material discharging apparatus that can exchange a cartridge containing a fluid material in a short time and improve the working efficiency.

[0007]

In order to achieve the above object, according to the present invention, air is supplied to left and right air chambers separated by a piston disposed in an air cylinder through a switching valve. Fluid material contained in a cartridge attached in the middle of the nozzle by alternately supplying and exhausting the piston to reciprocate the piston, and the rod fixed to the piston reciprocates in the nozzle connected to the air cylinder. In the fluid material discharging device that discharges after sucking into the nozzle, holes for supplying and discharging air into the air cylinder are formed on either one of the left and right sides of the air cylinder, and the inside of the air cylinder is removed. Attach a plate with a groove at a predetermined position to alternately supply and exhaust air to the left and right air chambers on the side of the cylinder. And drives the piston by supplying the exhaust through channels arranged so as to form a desired piping structure formed by.

In order to achieve the above object, according to the present invention, air is alternately supplied and exhausted to left and right air chambers separated by a piston disposed in an air cylinder via a switching valve. The piston was reciprocated, and the rod fixed to the piston reciprocated in the nozzle connected to the air cylinder, whereby the fluid material contained in the cartridge attached in the middle of the nozzle was sucked into the nozzle. Thereafter, in the fluid material discharging device to discharge, while holes are provided in the left or right side of the air cylinder to supply and discharge air into the air cylinder, respectively,
A groove for alternately supplying and exhausting air to the left and right air chambers in the air cylinder is disposed at a predetermined position on the side of the air cylinder, and a plate is attached from above, so that a passage formed by the groove and the plate is formed. The piston is driven by supplying and exhausting air.

According to a third aspect of the present invention, in the fluid material discharging apparatus according to the first or second aspect, the air exhausted from the air cylinder is supplied to the recess once provided at the center of the plate and the side of the air cylinder. After the air is sent into the exhaust chamber formed by (1) and (2), the air is exhausted to the outside, so that noise generated when the spool and the piston disposed inside the switching valve reciprocate is reduced.

The present invention described in claim 4 is the invention according to claim 1-3.
In the fluid material ejection device according to any one of the above,
The reciprocating direction of the spool and the reciprocating direction of the piston disposed inside the switching valve for alternately supplying and discharging air to the left and right air chambers of the air cylinder are mounted in the same direction. .

The present invention described in claim 5 provides the invention according to claims 1-4.
In the fluid material ejection device according to any one of the above,
The fluid material discharge device has a gun shape that can be operated with one hand as a whole, and connects a trigger disposed above the grip with an opening / closing valve for stopping the supply of air to the switching valve. When the switch is pulled, the open / close valve opens and the air is sent to the switching valve and is supplied alternately to the left and right air chambers in the air cylinder.When the finger is released, the open / close valve closes and the air supply is stopped. Features.

The present invention described in claim 6 is the invention according to claims 1-4.
In the fluid material ejection device according to any one of the above,
The fluid material ejection device has a stationary shape as a whole, and the nozzle is connected to a flexible tube, and is used to stop air supply to a lever and a switching valve attached near the tip of the tube. When the lever is squeezed, the open / close valve opens and the air is sent to the switching valve and is supplied alternately to the left and right air chambers in the air cylinder.When the lever is released, the open / close valve closes and the air is released. Is stopped.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a fluid material discharging apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of one embodiment of the fluid material discharging device according to the present invention, FIG. 2A is a side view of the fluid material discharging device of FIG. 1, and FIG.

First, the configuration of the fluid material discharging apparatus shown in FIG. 1 will be described. First, the fluid material discharging apparatus shown in FIG.
It has a piston 20, a rod 23, an air cylinder 25, an open / close valve 30, an air supply pipe 35, and a switching valve 50, and has a shape like a "gun" with a size that can be operated with one hand as a whole. ing.

The nozzle 10 has a hollow pipe shape with a hollow inside so that a fluid material containing a high-viscosity material such as a liquid or an adhesive can be discharged from the tip thereof. The other end of the part is an air cylinder 25
It is designed to be detachably connected to the. Nozzle 10
The connection between the air cylinder 25 and the screw
This is performed by engaging with slits provided respectively in the connection portion of the air cylinder 25 and the air cylinder 25. Nozzle 1
A rod 23 fixed to the piston 20 is inserted into the inside of the nozzle 10 so as to reciprocate on the inner wall of the nozzle 10. At the lower part of the nozzle 10, there is provided a mounting portion 19 for mounting the cartridge 15 containing the fluid material, and the mounting portion 19 is provided with the suction port 11 for sucking the fluid material into the rod 23. Have been. The suction port 11 for sucking and supplying the flowable material contained in the cartridge 15 into the nozzle 10 is closed when the flowable material is sucked into the nozzle 10. To prevent air from entering from the tip of the nozzle 10 while opening the valve 17 when discharging fluid material.
Is attached. The suction port 11 is provided with a suction valve 13 that opens so that the flowable material is sucked into the nozzle 10 only when the rod 23 moves away from the tip of the nozzle 10 and is closed when the flowable material is discharged. I have.

The peripheral wall of the cartridge 15 is in the most expanded state when the fluid material is fully stored, and has a bellows shape that gradually contracts as the fluid material is discharged. Thereby, the cartridge 15
It is possible to continuously supply the flowable material into the nozzle 10 without creating a space inside the nozzle. The cartridge 15 is configured such that the upper end of the cartridge 15 is
Used in conjunction with. Incidentally, the cartridge 15 is provided with a structure in which the protruding portion 16 for engaging with the mounting portion 19 is accommodated in a protective container provided on the upper side surface and is not accidentally detached.

The piston 20 is fitted and mounted in an air cylinder 25, has a groove 21 around the piston, and is roughly shaped like a "thread spool". And
An end surface of the piston 20 on the nozzle 10 side is an air cylinder 25.
Air cylinder 25 so that it can contact the wall of
Is provided with a recess corresponding to the shape of the guide 27 provided in the inside. A rod 23 is fixed to the piston 20 so as to be inserted into the nozzle 10 via a guide 27. When the piston 20 reciprocates, the rod 23 slides on the inner wall of the nozzle 10. here,
When the rod 23 fixed to the piston 20 reciprocally slides on the inner wall of the nozzle 10, the guide 27
Is provided for guiding the inner wall to slide back and forth. If the rod 23 does not reciprocate correctly in the nozzle 10, friction occurs between the inner wall of the nozzle 10 and the rod 23, and the inner wall of the nozzle 10 and the rod 23 may be worn to form a gap, so that an appropriate pressure may not be obtained. It is.

The inside of the air cylinder 25 has a cylindrical cavity, and one of the left and right outer side surfaces of the air cylinder 25 is connected to the left and right air chambers formed by the ends of the piston 20. The air supply / discharge ports 41 and 42 are formed in the air cylinder 25, respectively, and only when the piston 20 abuts on one of the right and left end surfaces in the air cylinder 25, the left and right sides are partitioned by the end of the piston 20. And the air cylinder 25 at other times.
The switching supply / discharge ports 45 and 46 are formed at positions connected to the side space formed by the inner wall of the piston and the piston recess 21. Further, the air cylinder 25 and the piston recess 21
A discharge port 48 is formed at a position connected to the side space formed by.

The switching valve 50 is provided below the air cylinder 25, and has a spool 61 inside the case 60 that reciprocates in the same direction as the reciprocating motion of the piston 20. The outer side surface of the case 60 on the same side as the outer side surface on which the air supply / discharge ports 41, 42 and the like are drilled in the air cylinder 25 is located at a position connected to the left and right air chambers formed by the ends of the spool 61. The left and right air chambers formed by being partitioned by the ends of the spool 61 only when the spool 61 abuts on one of the right and left end surfaces in the case 60 are provided with switching ports 51 and 52, respectively. Otherwise, the supply / discharge port 5 is connected to a side space formed by the inner wall of the case 60 and the spool recess 62.
5, 56 are drilled. Further, an air supply port 58 is connected to the opening / closing valve 30 at a position always connected to a side space formed by the case 60 and the spool recess 62. An elastic material such as rubber is attached to a portion of the end surface of the spool 61 which comes into contact with the case 60. This is to prevent the spool 61 from cracking due to an impact when colliding with the case 60 and to reduce noise. Further, in order to make the apparatus more compact, the reciprocating direction of the spool 61 and the reciprocating direction of the piston 20 are configured to be the same.

The opening / closing valve 30 is provided below the air cylinder 25 and beside the switching valve 50, and is connected to a trigger 39 disposed above the grip 37. In a normal state, the open / close valve 30 is closed by a spring 32 provided therein, and compressed air is not supplied.
When the trigger 39 is pulled by a finger against the force of the spring 32, the opening / closing valve 30 opens and compressed air is supplied from the air supply port 58 to the switching valve 5.
0, and is supplied into the air cylinder 25. The interior of the on-off valve 30 is further partitioned by a middle plate 33 into a spring-side air chamber 30b and an air-supply-side air chamber 30a, and both air chambers are communicated by an air hole 34.
The reason for this is that the air supplied from the air supply port 58 is sent from the supply-side air chamber 30a to the spring-side air chamber 30b to equalize the air pressure, so that the force when the trigger 39 is pulled is resisted by the spring 32. This is to make it possible to pull lightly only by using. The air supply port 58 is connected to the air supply pipe 35 via the opening / closing valve 30.
Compressed air is supplied to the air supply pipe 35 by a pump (not shown).

A packing 31a is provided inside the opening / closing valve 30. When the trigger 39 is opened, the packing 31a is closed against the pressure of the air supplied from the air supply port 58 by the force of the spring 32. The supply of air into the opening / closing valve 30 is prevented by contacting the portion 31b. When the trigger 39 is pulled with a finger, the space between the packing 31a and the end 31b opens, from which air or air is supplied into the opening / closing valve 30 and sent to the switching valve 50. By adjusting the amount of pulling the trigger 39, the air pressure fed to the switching valve 50 can be adjusted, so that the discharge amount of the high-viscosity material can be adjusted. On the other hand, the trigger 39 is provided with a scale corresponding to the air pressure supplied when the trigger 39 is pulled and a trigger recess 39a at a position corresponding to the scale, and the grip 37 is lightly engaged with the trigger recess 39a. Projection 39b is provided. This allows the user to know the air pressure of the air being sent into the on-off valve 30 by giving the hand a light feel of passing when the trigger 39 is pulled with a finger and the trigger recess 39a passes through the protrusion 39b. Things.

Air supply / discharge ports 41, 42 of air cylinder 25
And the external side face on which the switching supply / discharge ports 45 and 46 and the discharge port 48 are formed, the switching ports 51 and 52 of the case 60, and the supply / discharge ports 55 and 5
Plate 7 so as to cover a series of outer side surfaces on which
0 is attached. The plate 70 communicates the air supply / discharge port 41 with the supply / discharge port 55 and the air supply / discharge port 42 with the supply / discharge port 56 on its inner surface.
A groove 71 is provided so as to connect the switching supply / discharge port 46 with the switching port 52. That is, the groove 71 provided on the inner surface of the plate 70 and the side surface of the air cylinder 25 form a flow path arranged so as to form a desired piping structure, and supply and exhaust air. Since the supply and exhaust of the air are performed through the plate 70 in this manner, the piping structure is extremely simplified, the production becomes easy, and the cost can be reduced. Further, a recess 75 communicating with the outlet 48 is provided inside the plate 70. The formation of the air flow path is not limited to this. For example, a groove is provided at a predetermined position on the side surface of the air cylinder 25 without providing the above-described groove inside the plate 70, and the plate is By attaching the air filter 70, a flow path formed by the groove and the plate 70 may be formed to supply and exhaust air.

Next, the operation will be described. First,
The cartridge 15 containing the adhesive is attached to the mounting portion 19 of the nozzle 10, and the air supply pipe 35 and a pump (not shown) are connected by piping. When the trigger 39 is pulled with a finger, the opening / closing valve 30 opens and compressed air is sent from the air supply port 58 into the switching valve 50. The sent compressed air passes through a spool recess 62 around the spool 61 as shown in FIG.
5, the air supply / discharge port 4 provided in the air cylinder 25
1 to fill the left air chamber formed by the air cylinder 25 and the end of the piston 20, and this pressure causes the piston 20 to move to the right. When the piston 20 comes into contact with the right end of the air cylinder 25, the switching supply / discharge port 45 communicates with the switching port 51, through which air flows into the switching valve 50 and moves the spool 61 to the right side of the case 60. (FIG. 5 (b)). When the spool 61 moves to the right, air existing in the side space formed on the right side of the spool 61 passes through the switching port 52 through the switching supply / discharge port 46 to the air cylinder 25 and the piston recess 21 of the piston 20. Is sent to the discharge port 48 through the side space formed by the air cylinder 25 (FIG. 5 (c)), and from the space formed by the concave portion 75 provided inside the plate 70 and the side surface of the air cylinder 25 to the outside. Is discharged. As a result, the spool 61 and the piston 20 disposed inside the switching valve 50
The noise generated when reciprocating is reduced.

When the spool 61 contacts the right end of the case 60, the compressed air supplied from the air supply port 58 passes through the spool recess 62, passes through the supply / discharge port 56 provided in the switching valve 50, and passes through the air cylinder. The air is supplied to the air supply / discharge port 42 provided in the air cylinder 25 and fills the right air chamber formed by the air cylinder 25 and the end of the piston 20. This pressure causes the piston 20 to move to the left. This piston 2
The air existing in the side space formed on the left side of the piston 20 due to the movement of the piston 0 passes through the switching port 51 from the supply / discharge port 55 through the space on the left side of the spool 61, and passes through the switching supply / discharge port 4
5 through the side space formed by the air cylinder 25 and the piston recess 21 of the piston 20 and the outlet 4
8 and is discharged to the outside from the space formed by the concave portion 75 provided inside the plate 70 and the side surface of the air cylinder 25.

When the piston 20 comes into contact with the left end of the air cylinder 25, the switching supply / discharge port 46 communicates with the switching port 52, and air flows into the switching valve 50 through this pipe to allow the spool 6 to rotate.
1 is moved to the left of the case 60. The air existing in the side space formed on the left side of the spool 61 due to the movement of the spool 61 is transferred from the switching port 51 through the switching supply / discharge port 45 to the air cylinder 25 and the piston recess 21.
And is sent to the outlet 48 through the side space formed by the
The air is discharged to the outside from the space formed by the air cylinder 5 and the side surface of the air cylinder 25 (FIG. 6D). The compressed air sent from the air supply port 58 passes through the spool recess 62, passes through the supply / discharge port 55 provided on the switching valve 50, and is supplied to the air supply / discharge port 41 provided on the side surface of the air cylinder 25. This pressure causes the piston 20 to move to the right. (FIG. 6 (e)). Thereafter, this operation is sequentially repeated, and the piston 20 reciprocates.

Due to the reciprocating motion of the piston 20, the rod 23 fixed to the piston 20 reciprocally slides inside the nozzle 10, and the rod 23 is filled in the cartridge 15 as the rod 23 moves away from the tip of the nozzle 10. The flowable material is sucked into the nozzle 10 through the suction valve 13 by pressure. At this time, the valve 17 is closed. And
When the rod 23 moves toward the front end of the nozzle 10, the suctioned flowable material opens the valve 17 due to the pressure and is discharged from the front end of the nozzle 10 with vigor. At this time, the suction valve 13 is closed. Thereafter, this operation is sequentially repeated.

FIG. 7 shows another embodiment of a stationary type fluid material discharging apparatus. In this apparatus, a container 90 containing about 20 to 30 kilograms of a fluid material is mounted on a container mounting portion 91, and the lever 87 is gripped to discharge the fluid material from the tip of a nozzle 89. Although this size is set in consideration of the burden of handling the container 90 by the operator, it is needless to say that an apparatus capable of mounting a container having a larger capacity than this is also possible.

The apparatus main body 80 in this embodiment has a structure substantially similar to that of the embodiment shown in FIG. 1, and includes an air cylinder 25, a switching valve 50, an on-off valve 30,
It has an air supply pipe 35, a plate 70, and a container mounting section 91. Air cylinder 25, switching valve 50, open / close valve 3
The structures of the air supply pipe 35, the air supply pipe 35, and the plate 70 are the same as those shown in the embodiment of FIG.

The container mounting section 91 fixes the container 90 containing the flowable material, and sucks the flowable material stored in the container 90 into a drawing pipe 95 provided below the container mounting section 91. After that, it protrudes from the tip of the nozzle 89 through the flexible tube 85.
The suction into the drawing pipe 95 is performed by the rod 2 fixed to the piston 20 (not shown) fitted inside the air cylinder 25.
3 is reciprocally slidable in the retracting pipe 95, and the rod 23 (not shown) reciprocates so that the flowable material stored in the container 90 is moved into the retracting pipe 95 provided at the lower part of the container mounting portion 91. It is designed to be sucked. A joint 83 is provided on a side surface of the container mounting portion 91 for connecting the lead-in tube 95 and the flexible tube 85.

A nozzle 89 for discharging a fluid material is attached to the distal end of the flexible tube 85, and a lever 87 connected to the opening / closing valve 30 is attached to the nozzle 89. When the lever 87 is gripped, the open / close valve 30 is opened, and air is supplied from the pump (not shown) connected to the air supply pipe 35 to the air supply port 58. When the hand is released, the open / close valve 30 is closed and the supply of air is stopped. It has become. Therefore, by operating the lever 87, the fluid material can be freely discharged from the tip of the nozzle 89. The operation of the apparatus according to the present embodiment is substantially the same as that of the embodiment shown in FIG.

[0031]

As described above, according to the present invention, the air supply / discharge port and the supply / discharge port and the air supply / discharge port are connected to the inside of the plate, and the switching supply / discharge port, the switching port, The provision of the groove 71 for communicating the switching supply / discharge port with the switching port greatly simplified the piping structure, thereby facilitating manufacture and reducing costs.

Since the air is discharged through the space formed by the concave portion provided inside the plate and the side surface of the air cylinder, the spool and the piston disposed inside the switching valve reciprocate. The noise generated when exercising has been reduced.

It is a further object of the present invention to provide a fluid material discharging apparatus capable of exchanging a cartridge containing a fluid material in a short time and improving the working efficiency. In addition, since the entire apparatus has a gun shape that can be operated with one hand, the apparatus is small and easy to handle. In addition, since the supply of the fluid material is performed by exchanging the cartridge containing the fluid material, the fluid material can be replaced in a short time and the working efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of a fluid material discharging apparatus according to the present invention.

FIG. 2A is a side view of the fluid material discharging apparatus of FIG. 1, and FIG. 2B is a rear view.

FIG. 3 is a side sectional view of the fluid material discharging apparatus of FIG. 1;

FIG. 4 is an enlarged sectional view of an opening / closing valve and a trigger.

FIGS. 5A to 5C are cross-sectional views illustrating the operation of the piston.

6 (d) and 6 (e) are cross-sectional views for explaining the operation of the piston as in FIG.

FIG. 7 is a perspective view of another embodiment different from the embodiment of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Fluid material discharge apparatus 10 Nozzle, 11 Suction port 13 Suction valve, 15 Cartridge 16 Projecting part, 17 Valve 19 Mounting part, 20 Piston 21 Groove part, 25 Air cylinder 27 Guide, 30 Opening / closing valve 30a Air supply side air chamber, 30b Spring side air chamber 31a packing, 31b end 32 spring, 33 middle plate 34 air hole, 35 air supply pipe 37 grip, 39 trigger 41, 42 air supply / discharge port 45, 46 switching supply / discharge port 48 discharge port, 50 switching Valves 51, 52 Switching ports 55, 56 Supply / discharge ports 58 Air supply port, 60 Case 61 Spool, 62 Spool recess 70 Plate, 71 Groove 75 Recess, 80 Device body 83 Joint, 85 Flexible tube 87 Lever, 89 Nozzle 90 Container 91 Container mounting part 95 Retraction pipe

Claims (6)

[Claims] 1. A rod fixed to the piston by reciprocating the piston by alternately supplying and exhausting air to left and right air chambers separated by a piston disposed in an air cylinder via a switching valve. A liquid material ejecting device that reciprocates in a nozzle connected to the air cylinder to suck a fluid material contained in a cartridge attached in the middle of the nozzle into the nozzle, and then ejects the material. Holes for supplying and discharging air into the air cylinder are formed on either one of the left and right sides of the air cylinder, and alternately supplying and discharging air to left and right air chambers in the air cylinder. A plate provided with a groove at a predetermined position is attached to the side surface of the cylinder, and a desired arrangement formed by the groove and the side surface of the air cylinder is provided. Flowable material discharge apparatus characterized by driving the piston by supplying the exhaust air through arranged flow paths so as to form a structure. 2. A rod fixed to the piston by alternately supplying / exhausting air to left and right air chambers separated by a piston disposed in an air cylinder via a switching valve to reciprocate the piston. A liquid material ejecting device that reciprocates in a nozzle connected to the air cylinder to suck a fluid material contained in a cartridge attached in the middle of the nozzle into the nozzle, and then ejects the material. A hole for supplying and discharging air into the air cylinder is formed on each of the right and left side surfaces of the air cylinder, and air is supplied and discharged alternately to left and right air chambers in the air cylinder. By disposing the groove at a predetermined position on the side surface of the air cylinder and mounting the plate from above,
A fluid material discharging apparatus, wherein the piston is driven by supplying and exhausting air through a flow path formed by the groove and the plate. 3. The fluid material discharging device according to claim 1, wherein the air exhausted from the air cylinder is formed by a recess provided in the center of the plate and a side surface of the air cylinder. A fluid material discharging apparatus, wherein the noise generated when the piston and the spool disposed inside the switching valve reciprocate is reduced by exhausting to the outside after being sent to the exhaust chamber. 4. The fluid material discharge device according to claim 1, wherein the flow valve is disposed inside the switching valve for alternately supplying and exhausting air to left and right air chambers of the air cylinder. The reciprocating direction of the set spool and the reciprocating direction of the piston are attached in the same direction. 5. The fluid material ejection device according to claim 1, wherein the fluid material ejection device has a gun shape which can be operated with one hand as a whole, and has an upper grip. A trigger disposed on the switch valve is connected to an opening / closing valve for stopping supply of air to the switching valve, and when the trigger is pulled by a finger, the opening / closing valve is opened and air is sent to the switching valve and the air is sent to the switching valve. A fluid material discharging apparatus, wherein the air is supplied alternately to left and right air chambers in a cylinder, and when the finger is released, the open / close valve closes and the supply of air is stopped. 6. The fluid material ejection device according to claim 1, wherein the fluid material ejection device has a stationary shape as a whole, and the nozzle is a flexible tube. And a lever attached near the distal end of the tube and an open / close valve for stopping supply of air to the switching valve, and when the lever is grasped, the open / close valve opens to open the air. Is supplied to the left and right air chambers in the air cylinder alternately and supplied to the switching valve. When the lever is released, the open / close valve closes and the supply of air is stopped. apparatus.