JPH0593567U - Coating equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is a coating device for a circulation pipe consisting of a main pipe and a sub pipe, and assists air pressure when the paint is introduced from the main pipe to the sub pipe to restore the paint. The paint can be reliably returned without the need for an air piping device to operate. [Structure] A main pipe 3 for pumping the paint pumped from a paint tank 1 by a pump 2, an auxiliary pipe 4 for returning the paint which is connected to the main pipe 3 and communicates with the paint tank 1, and a flow pressure adjustment for the main pipe 3. A first hose 6 connected via a valve 5 and provided with a connection valve 7, and a first hose 6 connected to the auxiliary pipe 4.
In the coating apparatus comprising the second hose 8 connected to the connection valve 7 of the first and the coating gun 10 connected to the connection valve 7 of the first hose 6, the coating gun 10
A tube 16 having a diameter smaller than the inner diameter of the first hose 6 is connected to the paint introduction port, and the tube 16 and the first hose 6 can be connected via a connection valve 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a coating device that sprays coating material with a coating gun.

[0002]

[Prior Art]

 As shown in FIG. 3, the conventional coating device is a main pipe 3 for pumping the paint pumped from the paint tank 1 by a pump 2, and a main pipe 3 connected to the main pipe 3 for returning the paint to the paint tank 1. A sub-pipe 4, a first hose 6 connected to the main pipe 3 via a flow pressure adjusting valve 5 and provided with a connection valve 7, and a connection valve 7 of the first hose 6 connected to the sub-pipe 4. From the second hose 8 having a quick joint 9 to be connected, and as shown in FIG. 4, the first hose 6 is connected to the stem 11 connected to the paint inlet 15 and the coating gun 10 to which the connection valve 7 is connected. It is configured.

[0003]

[Problems to be solved by the device]

 In the conventional coating apparatus described above, the flow rate control valve 5 of the first hose 6 is used to set the coating flow rate to the coating gun 10, and the coating gun 10 is used for coating work. In order to avoid the inconvenience that pigments and the like settle in the second hose 8, the first hose 6 and the second hose 8 are connected to each other, and the paint flowing through the main pipe 3 is transferred to the paint tank 1 through the auxiliary pipe 4. Circulating to return.

However, since the discharge amount of the coating material flowing through the first hose 6 is adjusted to the coating gun 10 by the flow rate adjusting valve 5, the pressure introduced into the auxiliary pipe 4 is insufficient. In order to compensate for this pressure shortage, as shown in FIG. 3, the hose 14 is separately connected from the air pipe 12 through the two-way valve 13 to the flow rate adjusting valve 5 to raise the paint pressure of the first hose 6. ..

Therefore, there is a problem that the auxiliary air piping device and the work for connecting and disconnecting the air piping device are required.

An object of the present invention is to provide a coating apparatus capable of introducing paint into a sub-pipe without the need for the conventional auxiliary air piping apparatus.

[0007]

[Means for Solving the Problems]

 The gist of the present invention for achieving the above object is a main pipe for pumping paint pumped up from a paint tank, and a sub pipe for returning the paint which is connected to the main pipe and communicates with the paint tank. A first hose connected to the main pipe via a flow pressure adjusting valve and provided with a connection valve; a second hose connected to the sub-pipe and connected to a connection valve of the first hose; and a first hose of the first hose. In a coating device including a connection valve and a coating gun, a tube having a diameter smaller than the inner diameter of the first hose is connected to the coating port of the coating gun, and the tube is connected to the first hose. It is connectable via a valve.

[0008]

[Action]

 With the above configuration, the paint pressure flowing through the first hose is set to a pressure that can be introduced into the sub-pipe by the flow pressure control valve, and the paint flow pressure suitable for the paint gun is controlled by the small diameter tube of the paint gun. is there.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a paint tank, 2 is a pump for pumping the paint from the paint tank 1, 3 is a main pipe for pumping the paint discharged from the pump 2, 4 is the main pipe 3 and is connected to the paint tank 1. It is an auxiliary pipe for returning the paint, which was communicated with.

Reference numeral 6 is a first hose connected to the main pipe 3 through a flow pressure adjusting valve 5 and provided with a connection valve 7. Reference numeral 8 is connected to the sub-pipe 4 and is connected to the connection valve 7 of the first hose 6. A second hose 10 provided with a quick joint 9 is a coating gun connectable to the first hose 6 via a connection valve 7.

In the present invention, as shown in FIG. 2, a tube 16 having a diameter smaller than the inner diameter of the first hose 6 is coupled to the paint inlet 15 of the coating gun 10, and the first hose is connected to the tube 16. This is a structure in which a stem 11 that is connected to the connection valve 7 of the switch 6 is provided.

The tube 16 fixedly supports the system 11 on the handle 10 a of the coating gun 10 via a bracket 17.

Since the present invention has the structure as described above, the paint drawn from the paint tank 1 by the pump 2 is pumped to the first hose 6 through the main pipe 3. Here, in the present invention, the flow pressure adjusting valve 5 sets the paint pressure of the first hose 6 to a pressure that can be introduced into the auxiliary pipe 4.

Therefore, when the coating is not performed by the coating gun 10, the connection valve 7 of the first hose 6 and the quick joint 9 of the second hose 8 are connected as shown by the dotted line in FIG. Thereby, the paint passing through the main pipe 3 and the first hose 6 is sufficiently introduced into the sub pipe 4 without being assisted by the air pressure, and is returned to the paint tank 1.

On the other hand, when coating with the coating gun 10, the first hose 6 is connected to the tube 16 via the connection valve 7 and the stem 11. Therefore, the coating material passing through the first hose 6 is introduced into the coating gun 10 through the tube 16.

As described above, the pressure of the paint flowing through the first hose 6 is set to be high enough to be introduced into the auxiliary pipe 4 by the flow pressure adjusting valve 5. With this paint pressure, the flow pressure of the paint supplied to the coating gun 10 becomes excessive, but since the inner diameter of the tube 16 is smaller than the inner diameter of the first hose 6, the flow rate of the paint is applied by the throttling action of the tube 16. The flow rate pressure corresponding to the gun 10 is controlled.

[0017]

As described above, according to the present invention, the main pipe for pumping the paint pumped up from the paint tank, and the sub pipe for returning the paint, which is connected to the main pipe and communicates with the paint tank, A first hose connected to the main pipe via a flow pressure adjusting valve and provided with a connection valve; a second hose connected to the sub-pipe and connected to the connection valve of the first hose; and a first hose of the first hose. In a coating device including a connection valve and a coating gun, a tube having a diameter smaller than the inner diameter of the first hose is coupled to the coating material inlet of the coating gun, and the tube is connected to the first hose as a connection valve. It is possible to increase the paint flow rate pressure of the first hose because it is connectable via, and when the paint of the first hose is introduced into the sub-pipe and the paint is returned. At this time, the paint can be reliably returned without the need for an air piping device that supplies air pressure to the flow rate control valve. By omitting the equipment of the air piping device, the equipment cost can be reduced and the piping space can be saved. It can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a paint pipe made possible by the device of the present invention.

[Fig. 2] Side view of the coating gun of the device of the present invention

FIG. 3 is a perspective view of a conventional paint pipe.

FIG. 4 is a side view of a conventional coating gun.

[Explanation of symbols]

 1 Paint Tank 2 Pump 3 Main Pipe 4 Sub Pipe 5 Flow Pressure Control Valve 6 1st Hose 7 Connection Valve 8 2nd Hose 9 Quick Joint 10 Painting Gun

Claims (1)

[Scope of utility model registration request] 1. A main pipe for pumping the paint pumped up from a paint tank, a sub pipe for returning the paint which is connected to the main pipe and communicates with the paint tank, and a flow pressure adjusting valve for the main pipe. A first hose connected to the auxiliary pipe and provided with a connection valve; a second hose connected to the sub-pipe and coupled to the connection valve of the first hose;
In a coating apparatus comprising a connection valve of a hose and a coating gun coupled to the hose, a tube having a diameter smaller than the inner diameter of the first hose is coupled to a coating material inlet of the coating gun,
A coating apparatus, wherein the tube and the first hose can be connected via a connection valve.