JPH0331418Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Technical field) The present invention relates to a spray gun cleaning device.

(Prior art) When a two-component adhesive consisting of a main liquid and a hardening agent is mixed, it gels and hardens within a short period of time, so spray guns for applying this type of adhesive are
Immediately after the work is completed, it is necessary to replace all the adhesive in the pipe and gun with the base agent, and replacing it involves disposing of a large amount of the base agent.

In addition, the pipes were cleaned and dried using a solvent and compressed air instead of the main agent.
-Proposed in Publication No. 57185, etc., but in addition to consuming a large amount of solvent in the cleaning and drying processes, it is necessary to provide separate supply systems for solvent and compressed air, making the equipment unnecessarily complicated. The problem is that it can become a problem.

(Purpose) This invention was made in view of the above problems.
The purpose is to provide a device with a simple structure that can efficiently clean the inside of a pipe using as little cleaning liquid as possible.

(Configuration) In other words, the present invention has the following objectives:
A cleaning liquid supply pipe communicating with a cleaning liquid container having a spray gun insertion part is connected to the coating agent supply pipe leading to the spray gun via a pressure pump, and
A spray gun in which one side of a compressed air supply pipe communicating with a compressed air supply source is connected via a switching valve to the air motor for driving the pressurizing pump, and the other side is connected to the cleaning liquid supply pipe via a check valve. It's in the cleaning equipment.

Therefore, the details of the present invention will be explained below based on illustrated embodiments.

Figures 1 and 2 show an example of the device of the present invention using a schematic diagram and a circuit diagram.
Two supply pipes 5, 6 for supplying the main agent and curing agent from the block 7 via pumps 3, 4 communicate with the block 7 via manual valves 8, 9 provided on the side of the block 7, and from there two It extends to a spray gun 12 via a synthetic resin hose 11 connected to a mixer 10 for mixing liquids, thereby configuring a two-component adhesive application device.

On the other hand, the above-mentioned block 7 via the manual valve 13
The cleaning liquid supply pipe 14, which has one end connected to the cleaning liquid container 15, is connected via a check valve 17 to the discharge port of a pressure pump 16 that is detachably attached to the opening of the cleaning liquid container 15. The compressed air supply pipe 18 connected to the switching valve 2 is connected to the switching valve 2 via a pressure regulating valve 19.
0, from which one side is directly connected to a reciprocating air motor 21 that drives a plunger pump 16 for pressure feeding, for example, and the other side is directly connected to the above-mentioned cleaning liquid supply pipe 14 via a check valve 22.

In the figure, reference numeral 23 indicates a drain liquid collection tank, and reference numeral 15a indicates an insertion hole for the spray gun 12 provided at the upper part of the cleaning liquid container 15.

In the above-described apparatus, as soon as the application of the two-component adhesive to the bonding surface is completed, the manual valves 8 and 9 are closed to stop the supply of the main agent and curing agent, and at the same time, the manual valve 13 of the cleaning liquid supply pipe 14 is opened. Then, by operating the switching valve 20 of the compressed air supply pipe 18, for example,
The compressed air whose pressure is regulated to 4.0Kg/ ^cm2 is sent to the air motor 2.
1 to operate the pressure pump 16.

As a result, the cleaning liquid is pumped through the cleaning liquid supply pipe 14 toward the block 7, so if the tip of the spray gun 12 is inserted into the drain liquid collection tank 23 and the trigger is pulled, it will flow from the block 7 to the spray gun 12. All of the mixed two-component adhesive in the conduit is pushed out by the cleaning liquid.

Once all the mixed two-component adhesive has been discharged in this way, insert the tip of the spray gun 12 into the insertion hole 15a of the cleaning liquid container 15 and continue to pull the upper trigger for 5 to 7 minutes to circulate the cleaning liquid. Clean the inside of the pipe.

Finally, the switching valve 2 of the compressed air supply pipe 18
The air whose pressure was regulated by operating 0 was guided from the check valve 22 into the cleaning liquid supply pipe 14, and all the cleaning liquid in the pipe was discharged into the cleaning liquid container 15 by compressed air, and the air was discharged from the spray gun 12. Switching valve 2 at the time
Close 0.

After completing the above series of cleaning processes, if the manual valve 13 of the cleaning liquid supply pipe 14 is closed and the manual valves 8 and 9 of the main agent supply pipe 5 and hardening agent supply pipe 6 are opened, the spray gun Since the mixed two-component adhesive is supplied again to 12, the next adhesive application operation can be carried out without any trouble.

Although the above is a description of a device configured as a manually operated type, it is possible to continuously clean the inside of the pipe with a cleaning agent after the coating operation is completed, followed by discharging the cleaning liquid with compressed air and drying the inside of the pipe. This configuration is also a preferred embodiment of the present invention, and the present invention is not limited to this type of mixed two-component adhesive cleaning device, but can also be applied to coating devices that use quick-drying paints, etc. Needless to say, it is also applicable.

(Effects) As described above, according to the present invention, one side of the compressed air supply pipe is connected to the air motor for driving the cleaning liquid pressurizing pump through the switching valve, and the other side is connected to the cleaning agent supply pipe through the check valve. Since it is connected to a pipe, cleaning the inside of the coating agent supply pipe with a cleaning liquid, followed by draining the cleaning liquid from the pipe with compressed air, and drying the inside of the pipe can be easily and quickly performed by operating the switching valve. In addition, the device can be greatly simplified by using parts in combination. Moreover, since the cleaning liquid container is provided with an insertion part for the spray gun, by inserting the spray gun into the cleaning liquid container after discharging the coating agent, the inside of the pipe can be efficiently cleaned using as little cleaning liquid as possible. This makes it possible to significantly reduce its consumption.

[Brief explanation of drawings]

The drawing shows an example of the device of the present invention.
The figure is a schematic configuration diagram, and FIG. 2 is a circuit diagram. 1... Main agent tank, 2... Curing agent tank, 7... Block, 10... Mixer for mixing two liquids, 12... Spray gun, 14... Cleaning liquid supply pipe, 15... Cleaning liquid container, 16... Force feeding Pump, 18...Compressed air supply pipe, 20...Switching valve, 21...Air motor, 1
7,22...Check valve.

Claims (1)

[Scope of utility model registration request] Connect the cleaning liquid supply pipe that communicates with the cleaning liquid container with the spray gun insertion part to the coating material supply line leading to the spray gun via a pressure pump, and switch the compressed air supply pipe that communicates with the compressed air supply source. 1. A spray gun cleaning device, characterized in that one end is connected to the air motor for driving the pressure pump through a valve, and the other end is connected to the cleaning fluid supply pipe through a check valve.