JPH06134416A - Washing device for work having hole - Google Patents

Abstract

PURPOSE:To obtain a washing device capable of efficiently removing the foreign matter adhering to the hole bored in a work. CONSTITUTION:The jet side end part 5C having the jet orifice 5B opened thereto of a jet nozzle 5 is arranged so as to be inserted in the hole 7A bored in a work 7. The washing soln. W injected from the jet orifice 5B opened to the jet side end part 5C of the jet nozzle 5 is injected to the hole 7A of the work 7 through the washing soln. W present in the hole 7A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for removing foreign matter such as cutting chips, cutting oil used during processing, abrasives and the like during processing of articles formed by mechanical processing or the like.

[0002]

2. Description of the Related Art Problems of the conventional cleaning device disclosed in Japanese Patent Laid-Open No. 3-139832 (When removing a work from the cleaning tank after cleaning the work in the cleaning tank, foreign matter mixed in the cleaning liquid is re-applied to the work. A cleaning device which is the invention of the applicant of the present invention as a cleaning device that solves the possibility of adhesion and impairs the cleaning effect (Japanese Patent Application No. 4-177623).
There is. Such a cleaning device fixedly attaches a work,
A work support that gives rotation and reciprocating motion in a linear direction to the work, a cleaning tank in which the cleaning liquid is stored, overflow means for discharging the cleaning liquid in the upper part of the cleaning tank to the outside of the cleaning tank, and the inside of the cleaning tank. And an injection nozzle for injecting the cleaning liquid in the storage tank, which is arranged in the lower cleaning liquid and is pressurized by the cleaning liquid pump, toward the workpiece arranged in the lower cleaning liquid.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cleaning device particularly for a work in which a hole is formed and which can favorably clean the inside of the hole of the work.

[0004]

According to the present invention, a cleaning tank in which a cleaning liquid is stored, and a cleaning tank arranged in the cleaning liquid in the cleaning tank,
A workpiece that has a hole opened to the side,
An injection nozzle that opens into the cleaning liquid in the cleaning tank and injects the cleaning liquid in the liquid storage tank toward the work, and the liquid storage tank through the cleaning liquid in the cleaning tank toward the work from the injection hole of the injection nozzle. In the work cleaning device that sprays the cleaning liquid inside,
The jet side end where the jet hole of the jet nozzle opens is placed in the hole that is bored in the workpiece, and is directly inserted into the hole of the workpiece through the cleaning liquid from the jet hole that opens at the jet side end of the jet nozzle. The cleaning liquid is sprayed.

[0005]

The hole drilled in the work is effectively cleaned by the cavitation action of the cleaning liquid sprayed from the spray hole of the spray nozzle which is arranged to enter the hole.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. Reference numeral 1 denotes a bottomed cleaning tank capable of storing the cleaning liquid W therein, and the cleaning liquid W in the liquid storage tank 2 is supplied and stored therein. The cleaning liquid W in the liquid storage tank 2 is pressurized by the cleaning liquid pump 4 through the filter 3, and the cleaning liquid W is jetted and supplied from the jet nozzle 5 opening in the cleaning bath 1, while the upper portion of the cleaning bath 1 is provided. The cleaning liquid W which has reached the above position flows back into the liquid storage tank 2 through the overflow passage 6. Injection nozzle 5
Is the cleaning liquid inflow passage 5A connected to the cleaning liquid pump 4 and the cleaning tank 1.
An injection hole 5B for injecting the cleaning liquid W into the inside,
In this example, the injection side end portion 5C at the upper end in the figure
The injection hole 5B opens. Therefore, the cleaning liquid W in the liquid storage tank 2 pressurized by the cleaning liquid pump 4 is transferred to the cleaning liquid inflow path 5A.
It flows into the inside and is injected into the cleaning liquid W in the cleaning tank 1 through the injection hole 5B opening at the injection side end portion 5C. The injection hole 5B
You may provide a recess hole in the injection side of. Reference numeral 7 is a work to be cleaned, an example of which is shown in FIG. The work 7 is provided with a hole 7A therein, and one side of the hole 7A is opened to one end 7B of the work 7. In this example, the hole 7A is opened to the other end 7D on the other side by the small hole 7C.
May be a blind hole. Furthermore, the hole 7A may have a groove shape or a chamber shape and is not limited to that shape. In short, the hole 7A is a general term for a concave portion.
And, this work 7 is the work support 8 in FIG.
It is supported in the up-down direction by means of which the hole 7A opened at one end 7B of the work 7 is opposed to the jet side end 5C where the jet hole 5B of the jet nozzle 5 is opened. Further, the outer diameter E of the ejection side end portion 5C of the ejection nozzle 5 is equal to the hole 7A of the work 7.
The diameter is set to be smaller than the diameter D of 5 to allow the injection side end portion 5C to enter the hole 7A of the work 7.

In the above cleaning apparatus, the inventor of the present invention conducted various cleaning tests, and as a result, properly selected the distance L between the ejection side end portion 5C of the ejection nozzle 5 and the one end 7B of the hole 7A of the work 7. It was found that the cleaning effect in the hole 7A formed in the work 7 can be improved by doing so. That is, the opening end 7 of the hole 7A of the work 7 toward the injection nozzle 5 side.
When the distance L between B (this corresponds to one end 7B where the hole 7A of the work 7 is opened) and the ejection side end 5C of the ejection nozzle 5 is changed, the foreign matter removal rate in the hole 7A of the work 7 is I confirmed that it changed. Here, the hole 7A of the work 7
The distance L between the opening end 7B toward the ejection nozzle 5 side and the ejection side end portion 5C of the ejection nozzle 5 is equal to the ejection hole 5B of the ejection nozzle 5.
0d means that the ejection side end portion 5C of the ejection nozzle 5 and one end 7B of the work 7 are in the same height state, while + 5d, + 10d ... Distance + L between the jet side end 5C and one end 7B of the work 7
Is present, while -5d means that the injection nozzle 5
The injection side end 5C of the work 7 has entered the hole 7A from the one end 7B of the work 7, and when the injection side end 5C of the injection nozzle 5 enters the hole 7A of the work 7 in this example, The work support 8 that supports 7 was moved downward to cause the hole 7A of the work 7 to enter the ejection side end 5C of the ejection nozzle 5. In FIG. 1, the state indicated by the solid line of the work 7 is a state where the distance is + L (that is, + d), and the state indicated by the dotted line of the work 7 is a state where the distance is -L (that is, -d). It is a thing.

Then, the injection nozzle 5 in the hole 7A of the work 7
FIG. 3 shows a test result of the foreign matter removal rate in the hole 7A of the work 7 when the distance L between the opening end 7B to the side and the ejection side end portion 5C of the ejection nozzle 5 is changed. Here, the foreign matter removal rate will be described with reference to FIG. That is, as the foreign matter removal rate increases, the foreign matter can be removed, and the foreign matter removal rate 1 indicates that the foreign matter to be removed in the hole 7A can be completely removed. Also, the solid line in the figure shows the injection pressure of the cleaning liquid W from the injection nozzle 5 at 16 kg / cm @ 2, and the dotted line shows the injection pressure at 10 kg / cm @ 2. According to the above test results, the opening end 7B of the hole 7A of the work 7 toward the jet nozzle 5 side and the jet side end portion 5C of the jet nozzle 5
And the distance L to is + L (eg + 15d, + 10d, +5
It is understood that the foreign matter removal rate in the hole 7A increases as the distance moves from d) to -L (-2.5d, -5d). That is, in a state where the ejection side end portion 5C of the ejection nozzle 5 enters the hole 7A of the work 7, the ejection side end portion 5C
When the cleaning liquid W pressurized from the injection hole 5B opening at the position is sprayed into the cleaning liquid in the hole 7A of the work 7, cavitation bubbles are generated in the hole 7A of the work 7. The cavitation bubbles are destroyed in the hole 7A of the work 7 to generate a large impact pressure, and the impact pressure and the physical direct force of the sprayed cleaning liquid W are directly applied to the hole 7A of the work 7. By effectively and effectively operating, the foreign matter in the hole 7A of the work 7 is favorably removed. Then, the removed foreign matter, together with the bubbles remaining after the cavitation action, has one end 7B of the hole 7A of the work 7 or the small hole 7C.
It is discharged into the cleaning tank 1 via. Either the jet nozzle 5 or the workpiece 7 may be moved so that the jet side end portion 5C of the jet nozzle 5 enters the hole 7A of the workpiece 7, and the jet nozzle 5 or the workpiece 7 is further rotated during cleaning. Alternatively, it may be moved in a linear direction (including reciprocating motion).

[0009]

As described above, according to the present invention, the injection side end portion of the injection nozzle, in which the injection hole is opened, is inserted into the hole formed in the work, and is opened at the injection side end portion of the injection nozzle. Since the cleaning liquid W sprayed from the spraying hole is sprayed toward the hole of the work through the cleaning liquid, the energy of cavitation can be effectively applied to the hole of the work, and thus the foreign matter in the hole of the work Can be effectively removed by washing.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a work cleaning apparatus according to the present invention.

FIG. 2 is a vertical sectional view showing an example of a work.

FIG. 3 is a diagram showing a relationship between a distance L between a hole opening end surface of a workpiece and an injection side end portion of an injection nozzle and a hole foreign matter removal rate.

[Explanation of symbols]

 5 injection nozzle 5B injection hole 5C injection side end 7 work 7A hole

Claims (1)

[Claims] 1. A cleaning tank in which a cleaning liquid is stored, a work disposed in the cleaning liquid of the cleaning tank and having holes formed to open laterally, and a workpiece opened in the cleaning liquid of the cleaning tank. An injection nozzle for injecting the cleaning liquid in the liquid storage tank toward
In a cleaning device for a work, which is configured to inject the cleaning liquid in the liquid storage tank from the injection hole of the injection nozzle toward the work through the cleaning liquid in the cleaning tank, the injection side end where the injection hole 5B of the injection nozzle 5 opens 5C is placed in a hole 7A formed in the work 7, and the cleaning liquid W sprayed from the spray hole 5B opening at the spray-side end 5C of the spray nozzle 5 passes through the cleaning liquid W. A work cleaning device having a hole 7A formed by spraying toward the hole 7A.