JP2579246Y2 - Cleaning equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

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

[0002]

2. Description of the Related Art Problems with a conventional cleaning apparatus disclosed in Japanese Patent Application Laid-Open No. 3-139832 (when a work is taken out of the cleaning tank after the work is cleaned in the cleaning tank, foreign matter mixed in the cleaning liquid is again applied to the work. As a cleaning apparatus for solving the problem of the possibility of adhesion and impairing the cleaning effect), a cleaning apparatus (Japanese Patent Application No. Hei 4-177623) is invented by the present applicant.
No.). Such a cleaning device is configured such that a work is fixedly attached to a support device, and a work support that imparts rotation and linear reciprocation to the work, a cleaning tank in which a cleaning liquid is stored, and a cleaning tank in the cleaning tank. An overflow means for discharging the cleaning liquid at the upper part out of the cleaning tank, and a cleaning liquid disposed in the lower cleaning liquid in the cleaning tank, and the cleaning liquid in the storage tank pressurized by the cleaning liquid pump is disposed in the lower cleaning liquid. And an injection nozzle for injecting toward the nozzle.

[0003]

SUMMARY OF THE INVENTION The cleaning device according to the present invention is provided with the cleaning device described above, and the cleaning effect of the work is further enhanced.

[0004]

According to the present invention, there is provided a cleaning tank in which a cleaning liquid is stored, a work mounted and supported by a supporting device in the cleaning liquid in the cleaning tank, and an opening in the cleaning liquid in the cleaning tank. An injection nozzle for injecting the cleaning liquid in the storage tank toward the work, and a work cleaning apparatus for injecting the cleaning liquid in the storage tank from the injection hole of the injection nozzle toward the work through the cleaning liquid in the cleaning tank. The distance L between the inner wall of the cleaning tank facing the opening of the injection hole of the injection nozzle and the center of the workpiece.
Is 27d or more based on the diameter d of the injection hole.

[0005]

The impact pressure due to cavitation bubbles generated by the cleaning liquid injected from the injection hole of the injection nozzle and the direct injection force of the cleaning liquid collide with the inner wall of the cleaning tank opposed to the opening of the injection hole, and these again reopen the opening of the injection hole. Is prevented from going backwards, thereby enhancing the effect of cleaning the workpiece.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the cleaning apparatus according to the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a cleaning tank that can store the cleaning liquid W. The cleaning liquid W that has reached the upper opening 1A of the cleaning tank 1 is returned to the liquid storage tank 7 through the overflow passage 2, and thereby the cleaning tank 1 There is a certain cleaning liquid W inside
Is stored. Reference numeral 3 denotes a work attached to the work support 4, and the work 3 is the cleaning tank 1 by the work support 4.
It is disposed so as to be able to advance and retreat in the cleaning liquid W therein, and is provided with rotation. Note that, instead of rotating the work 3, an injection nozzle described later may be rotated. 5 is one side wall 1B of the cleaning tank 1.
(A left side wall in FIG. 1) and an injection nozzle arranged opposite to the work 3 in the cleaning liquid W, and more specifically, the opening 5B of the injection hole 5A is formed on one side wall 1B.
It faces further toward the work 3. Then, the cleaning liquid W in the storage tank 7 is pressurized by the cleaning liquid pump P, and the pressurized cleaning liquid W is supplied to the work through the cleaning liquid W in the cleaning tank 1 through the opening 5B of the injection hole 5A of the injection nozzle 5. Injected toward 3. Then, the inventor of the present invention determines the inner wall 1C of the cleaning tank 1 facing the opening 5B of the injection hole 5A of the injection nozzle 5.
(In other words, the right side wall in FIG. 1 facing one side wall 1B of the cleaning tank 1 in which the injection nozzle 5 is arranged) There is a difference in the cleaning effect of the work 3 depending on the distance L from the center XX of the work 3. We paid attention to that. FIG. 2 is a test result showing the relationship between the distance L between the inner wall 1C of the cleaning tank 1 and the center XX of the work 3 and the foreign matter removal efficiency. The removal ratio is expressed by the ratio of the foreign matter removal length A / the diameter d) of the injection hole 5A, and the larger the absolute value, the higher the removal efficiency. On the other hand, the horizontal axis represents the distance L between the inner wall 1C of the cleaning tank 1 and the center XX of the workpiece 3 in the ratio of (distance L between the inner wall 1C of the cleaning tank 1 and the center of the workpiece 3 / diameter d of the injection hole 5A). The distance L between the inner wall 1C of the cleaning tank 1 and the center XX of the work 3 increases as the absolute value increases. Then, the test was performed on the workpiece 3 having a diameter of 20 mm and a jet pressure of the cleaning liquid W of 20 kg / C.
At m2, the diameter φd of the injection hole 5A of the injection nozzle 5 was changed to 1.5 mm and 2.5 mm. The test result is shown in FIG. 2. When the diameter of the injection hole 5A of the injection nozzle 5 is 1.5 mm, the removal efficiency drops sharply from 22.5 when L / d is 27 or less, and the injection nozzle 5 When the diameter of the hole 5A is 2.5 mm, the removal efficiency sharply drops from 14 when L / d is 27 or less. As described above, when L / d is 27 or less, the abrupt decrease in removal efficiency is considered as follows.

That is, the cleaning liquid W in the liquid storage tank 7 is pressurized by the cleaning liquid pump P,
A is sprayed toward the work 3 from the opening 5B of A through the cleaning liquid W in the cleaning tank 1. When the pressurized cleaning liquid W is injected into the cleaning liquid W in the cleaning tank 1 from the opening 5B of the injection hole 5A, cavitation bubbles are generated. The cavitation bubbles are destroyed to generate a large impact pressure, and foreign matter on the work 3 is removed by the impact pressure and the physical direct force of the jetted cleaning liquid W. On the other hand, although the impact pressure and the direct impact force that collide with the work 3 impinge on the work and perform a cleaning action, their energy is reduced, but they still have high impact and direct energy, and these are the work energy. 3 and proceeds toward the inner wall 1C of the cleaning tank 1 facing the opening 5B of the injection hole 5A of the injection nozzle 5. And these impact pressure and direct impact force are
After the collision with the nozzle 5, it returns toward the opening 5 </ b> B of the injection nozzle 5 and advances again. According to this, it has an effect of opposing impact pressure and direct injection force from the injection hole 5A of the injection nozzle 5 toward the work 3, and the injection hole 5A of the injection nozzle 5
Thus, the impact pressure toward the work 3 and the direct blast force are weakened. As described above, when the distance L between the center XX of the work 3 and the inner wall 1C of the cleaning tank 1 facing the opening 5B of the injection hole 5A of the injection nozzle 5 is less than 27d, the nozzle collides with the inner wall 1C and the injection nozzle The return of the impact pressure and the direct injection force to the injection hole 5A of the nozzle 5 is fast and the force is large, which impairs the cleaning effect. On the other hand, when the distance L is 27d
In the above, the impact pressure against the injection hole 5A of the injection nozzle 5 due to the collision with the inner wall 1C, the return of the direct injection force after reflection is slow, and the force itself decreases due to the increase in the distance L. Thus, the resistance to the impact pressure and the direct blast force injected toward the work 3 from the injection hole 5A can be reduced, so that the cleaning effect on the work 3 is not hindered.

[0008]

As described above, according to the cleaning apparatus of the present invention, the distance L between the inner wall of the cleaning tank facing the opening of the injection hole of the injection nozzle and the center of the work is determined based on the diameter d of the injection hole. By setting it to 27d or more, a large cleaning effect of the work can be obtained, and its practical effect is extremely large.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a cleaning device according to the present invention.

FIG. 2 shows the distance L / between the inner wall 1C of the cleaning tank and the center of the work.
FIG. 4 is a diagram showing the relationship between d and the removal efficiency A / d.

FIG. 3 is a schematic diagram showing a foreign matter removal length A in a work.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cleaning tank 1C Inner wall of cleaning tank facing opening of injection hole of injection nozzle 3 Work XX Center of work 5A Injection hole

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-139832 (JP, A) JP-A-62-68195 (JP, A) JP-A-6-154713 (JP, A) 139832 (JP, A) JP-A 57-17783 (JP, U) JP-A 1-124280 (JP, U) JP-B 36-8240 (JP, B1) (58) Field surveyed (Int. ⁶ , DB name) B08B 3/00-3/14

Claims (1)

(57) [Scope of request for utility model registration] 1. A cleaning tank in which a cleaning liquid is stored, a work attached and arranged with a supporting device in the cleaning liquid in the cleaning tank,
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 injection hole of the injection nozzle faces the work through the cleaning liquid in the cleaning tank toward the work in the storage tank. In the apparatus for cleaning a work which sprays the cleaning liquid of the above, the cleaning tank 1 facing the opening 5B of the injection hole 5A of the injection nozzle 5 is provided.
A cleaning device in which the distance L between the inner wall 1C of the workpiece 3 and the center XX of the work 3 is set to 27d or more based on the diameter d of the injection hole 5A.