JPH084123Y2 - Air operated type paint pressure reducing valve air passage - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an air passage of an air-operated type paint pressure reducing valve for electrostatic automatic painting.

[0002]

2. Description of the Related Art Generally, in order to supply paint to a spray gun for painting, a paint pressure reducing valve is attached to the outlet of a paint pump to reduce the paint pressure to a level suitable for spraying. In this case, in an automatic machine such as a reciprocator, the attached automatic gun moves up and down, so the amount of paint discharged from the automatic gun changes due to the height difference, and in particular electrostatic coating requires a finish of the coating film. Since it is severe, maintaining the discharge rate is important.

Therefore, in these automatic machines, a paint pressure reducing valve is attached at the hand of the automatic gun to prevent the change in the discharge amount. However, in electrostatic painting using water-based paint or low resistance paint, the paint reducing valve is attached from the attached paint pressure reducing valve. In order to prevent the risk of high voltage leaking, the pressure reducing valve is fixed via an insulating stay to keep a predetermined distance from the vicinity and the earth body.

Normally, the paint pressure reducing valve presses the diaphragm with a spring, and the paint pressure is adjusted by adjusting the strength of the spring. However, when it is attached to a reciprocator, the paint pressure reducing valve is the same as the gun. Because it moves up and down in position,
The air-operated method is used because the pressure can only be adjusted at hand.

[0005]

As described above, in the case of the conventional air-operated type paint pressure reducing valve, as shown in FIG. 3, the paint pressure reducing valve b fixed to the insulating stay a is separately provided for air operation. Since the air hose c is added, the number of hoses increases, and hose removal near the paint pressure reducing valve becomes messy. That is, since the connection end of the air hose c is located near the pump chamber of the paint pressure reducing valve b, the air hose c is laid along the insulating stay a. Since the book is stretched, there are many irregularities on the main body of the paint pressure-reducing valve, and scattered paint mist adheres and is easily soiled. Further, the hose is liable to cause a discharge hazard due to deterioration or damage.

In view of the above situation, the present invention integrates an insulating stay for fixing a paint pressure reducing valve and a paint pressure reducing valve, and forms an air passage for air operation in the insulating stay, thereby solving the above problems. It is intended to provide an air passage for a mold paint pressure reducing valve.

[0007]

According to the present invention, a paint pressure reducing valve for supplying a pressure-controlled paint to an automatic gun for electrostatic painting attached to a reciprocator or the like is provided in a gun stay, and
The paint pressure reducing valve is air operated, and an air passage for air operation is provided in the insulating stay of the paint pressure reducing valve.

[0008]

As described above, among the two systems of hoses connected to the paint pressure reducing valve, the air hose for air operation is directly guided from the insulating stay which is the base of the paint pressure reducing valve main body, so that the joint mounting portion has irregularities. It is possible to reduce the stain caused by the adhesion of paint mist.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings of the embodiments.

FIGS. 1 and 2 show a paint pressure reducing valve mounted on a reciprocator, wherein 1 is a valve body having a paint inlet 2 on one side and a paint outlet 3 on the other side. Passage 4
An operating air passage 8 is formed in the continuous insulating stay 7 in the longitudinal direction on the side of the working chamber 6 partitioned by the diaphragm 5 arranged at the end, and a joint 9 is provided at the end of the air passage 8. , The seat 1 formed on the pump chamber 10 side that becomes the paint passage 4 with the diaphragm 5 as a boundary
A ball valve 13 seated by a spring spring 12 faces one end, and constitutes a paint pressure reducing valve 14 as a whole. Incidentally, 15 is a diaphragm retainer, and 16 is a diaphragm receiver.

To explain this action, first, the air hose 17 connected to the paint pressure reducing valve 14 is bent from the portion along the gun stay 19 to the paint pressure reducing valve main portion 14a in parallel with the paint hose 18 as in the conventional case. Instead, the hose having a length shorter than the length toward the paint pressure reducing valve head 14a can be used by directly guiding it to the joint 9 at the end of the insulating stay 7 which is the base of the paint pressure reducing valve 14 close to the gun stay 19.

Therefore, the pressure reducing valve main body 1 has less irregularities such as joints and the like, so that stains due to paint mist are reduced, the piping of the air hose 17 itself is simplified, and the air passage 8 in the insulating stay 7 has an air hose 7. As a substitute for, the static deterioration of the hose can be prevented accordingly.

[0013]

As described above, since the air passage of the air-operated type paint pressure reducing valve of the present invention is formed in the insulating stay for fixing the paint pressure reducing valve, the unevenness of the joint mounting portion of the paint pressure reducing valve main body is achieved. Less and less dirt from paint mist. Also, since the air hose is located near the gun stay, piping is easy. Further, it is possible to prevent electrostatic deterioration of the air hose and also to prevent leakage of high voltage from the paint pressure reducing valve.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of an embodiment of the present invention in a use state.

FIG. 2 is a vertical plan view showing a main part of the paint pressure reducing valve.

FIG. 3 is an explanatory diagram showing a state of piping of a conventional paint pressure reducing valve.

[Explanation of symbols]

 1 Valve body 7 Insulation stay 8 Air passage 19 Gun stay

Claims (1)

[Scope of utility model registration request] 1. A paint pressure reducing valve for supplying a pressure-controlled paint to an automatic gun for electrostatic coating attached to a reciprocator or the like is arranged in a gun stay, and the paint pressure reducing valve is air operated. An air passage for an air-operated paint pressure reducing valve that has a structure in which the air passage is passed through the insulating stay of the paint pressure reducing valve.