JPH06184780A - Washing device - Google Patents

Abstract

PURPOSE:To increase a washing effect by intermittently blowing a washing liquid against the whole lower surface of a work. CONSTITUTION:A slide rail 34 is attached to the lower place of a lifting frame 32 moved vertically along guide rails 33. A horizontal pipe 39 reciprocating at the lower part of the slide rail 34 by a cylinder, when the work is transported on the slide 34, is provided and spray nozzles ejecting a washing liquid upwards are juxtaposed on the horizontal pipe 39.

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 cleaning a work after heat treatment, particularly a work having a recessed portion such as a deep hole on its lower surface.

[0002]

2. Description of the Related Art For example, dust and oil used in a heat treatment process adhere to the surface of a work after heat treatment,
Therefore, it is necessary to clean the surface of the work after the heat treatment. In such a case, there is a case where the cleaning liquid cannot be sprayed to the entire work by ejecting the cleaning liquid from the injection nozzle fixed in the cleaning chamber to the work set in the cleaning chamber. In such a case, if the work is rotated around the vertical axis, the cleaning liquid can be sprayed on the upper surface and the peripheral surface of the work, but in order to rotate the work in this way, the work must be set on the turntable. Therefore, the turntable hinders the spraying of the cleaning liquid on the lower surface of the work. Therefore, a pipe for covering the upper surface and the peripheral surface of the work is provided rotatably around a vertical axis passing through the center of the work, and an injection nozzle is attached to the pipe to spray the cleaning liquid on the upper surface and the peripheral surface of the work. At the same time, a large number of pipes, in which injection nozzles for ejecting the cleaning liquid upward are arranged in parallel, are attached below the work to clean the lower surface of the work.

[0003]

Since the cleaning liquid flows from above on the lower surface of the work, if the cleaning liquid is continuously sprayed, the flow of the cleaning liquid is stopped at the portion where the cleaning liquid from above collides with the jetted cleaning liquid. As a result, the cleaning effect decreases, and the cleaning effect is improved by intermittently spraying the cleaning liquid. Therefore, in the above-mentioned conventional cleaning device, it is necessary to provide a valve or the like for intermittently supplying the cleaning liquid to the injection nozzle arranged on the lower surface of the work. In addition, a large number of injection nozzles have to be attached to the lower part of the work, which requires a lot of man-hours for this attachment work. It should be noted that it is conceivable to rotate the spray nozzle for cleaning the lower surface of the work around the vertical axis passing through the center of the work, similarly to the spray nozzle for cleaning the upper surface and the peripheral surface of the work. In this case, the cleaning liquid is continuously sprayed on the portion corresponding to the center of rotation, which causes a problem that the cleaning effect on the central portion of the lower surface of the work is reduced.

Therefore, an object of the present invention is to provide a cleaning device capable of efficiently cleaning the lower surface of a work in order to solve the above problems.

[0005]

In order to achieve the above object, the invention of claim 1 is a cleaning apparatus having an injection nozzle for ejecting a cleaning liquid to the lower surface of a work arranged in a cleaning chamber. The injection nozzles are arranged in parallel to the width direction of the bottom surface of the work, and the injection nozzle moving means is provided to reciprocate in a direction perpendicular to the arrangement direction so as to traverse below the work. .

According to a second aspect of the present invention, in the first aspect of the invention, when the bottom surface of the work has a recessed portion such as a deep hole, the injection nozzle moving means causes the injection nozzle to face the recessed portion. It is characterized by temporarily stopping or decelerating to a position where

[0007]

Since the spray nozzle for cleaning the lower surface of the work is reciprocally moved, the cleaning liquid is intermittently sprayed onto this portion of the bottom surface.

When there is a recessed portion such as a deep hole where the cleaning liquid is hard to reach, the injection nozzle is moved to a position facing the recessed portion and temporarily stopped or decelerated at that position. The time during which the jet nozzle and the recessed portion face each other was extended to sufficiently inject the cleaning liquid into the recessed portion to enhance the cleaning effect.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1 and FIG. 2, reference numeral 1 is a loading / unloading station for setting a pallet P on which a plurality of works W are mounted. And the third cleaning chamber 3 including the shower cleaning unit 3A and the immersion cleaning unit 3B are connected to each other. Then, the pallet P on which a large number of works W are erected is transported from the loading / unloading station 1 to the first cleaning chamber 2, and is attached to the three gate-shaped pipes 21 arranged side by side so as to straddle the pallet P here. Warm water is jetted from the jet nozzle to pre-wash the work W, and then the pallet P is transported to the second washing chamber 3,
Here, after the main cleaning is performed using the cleaning liquid, the pallet P is returned to the first cleaning chamber 2 and the cleaning liquid is washed away with the warm water from the gate-shaped pipe 21 and the warm air is blown from the warm air tube 22 equipped with the air blow nozzle. Was sprayed to dry the work W, and finally the pallet P was returned to the loading / unloading station 1 to complete the cleaning of the work W.

By the way, the pallet P is loaded from the loading / unloading station 1 to the first cleaning chamber 2 and the second cleaning chamber 3 as described above.
The transport device 4 for sequentially transporting the pallet P is arranged between the parallel guide rails 41 on which the pallet P slides, and has a transport bar 42 that is reciprocable in the longitudinal direction and swingable about the longitudinal axis. Two pairs of hooks 43 are fixed to a predetermined position of the transfer bar 42 at the same distance as the pitch between the first cleaning chamber 2 and the second cleaning chamber. When the pallet P is transported, the transport bar 42 is swung to raise the hooks 43 upward, and the pair of hooks 43 sandwich the front and rear of the pallet P in the moving direction.
The pallet P is transported by reciprocating in the transport direction. When the transportation is completed, the transportation bar 42 is swung to release the holding of the pallet P by the hooks 43.

Elevating opening / closing doors are provided at the entrances and exits of the first and second cleaning chambers 2 and 3 so that the entrances and exits are opened only when the pallet P is moved so that the warm water and the cleaning liquid are mixed. Also, hot air for drying did not flow backwards.

In the case of the present embodiment, the work W is the counter shaft used in the automatic transmission shown in FIG.
Further, the pallet P has a base plate PL having the same number of openings PH as the number of works W to be placed and a guide frame PU in the shape of a cross girder at the four corners and the central five places, respectively, via the connecting rods PB. It is a connection. In addition, at least three support protrusions P are evenly spaced from each other on the upper surface of the peripheral edge of the opening PH.
S is erected, and the side surface of the gear portion WG provided on one side peripheral surface of the work W is supported by the support protrusion PS, so that the bottomed deep hole portion WH is opened downward.

The cleaning device according to the present invention includes the second cleaning chamber 3 described above.
Which is applied to the shower cleaning unit 3A of
As shown in FIGS. 4 and 5, the cleaning chamber 3 has a guide rail 3
Lifting frame 3 that is lifted up and down by the lifting cylinder 31 along 3
2 is provided. At the bottom of the lifting frame 32, the lifting frame 3
2 is a rising end position and is provided with a guide rail 34 located on an extension of the guide rail 41.
The pipe 35 is attached by a rack-and-pinion mechanism driven by an oscillating cylinder 36 so as to rotate forward and backward in a 90 ° range about a vertical axis. In the vertical portion of the pipe 35, a spray nozzle for ejecting the cleaning liquid toward the center of rotation is arranged in parallel. A short pipe 35a equipped with a spray nozzle is attached to the lower end of the rotary shaft so as to eject the cleaning liquid downward. An immersion tank 37 filled with a cleaning liquid is provided in the immersion cleaning unit 3B provided in the lower part of the second cleaning chamber 3, and the bottom of the immersion tank 37 is provided with a nozzle for generating bubbles to supply air. A tube 38 is attached. Further, with the elevating frame 32 in the rising end position, the horizontal cylinder 39a
The horizontal pipe 39 reciprocated below the guide rail 33 in a direction perpendicular to the longitudinal direction of the guide rail 33.
The horizontal pipe 39 is provided with a spray nozzle so as to jet the cleaning liquid upward.

According to the above construction, when the pallet P is transported onto the guide rail 34 of the second cleaning chamber 3, the transport bar 4
2 is evacuated from the second cleaning chamber 3, and then the lifting cylinder 31
By the action of the
When the cleaning liquid is dipped in the inside and the cleaning liquid is immersed and washed by the bubbles from the nozzle of the air supply tube 38 for a predetermined time, the pallet P is lifted together with the elevating frame 32. At this time, dirt floating on the surface of the immersion tank 37 may be redeposited on the work W, and the inside of the deep hole WH may not be sufficiently cleaned. By this action, the pipe 35 and the short pipe 35a are rotated forward and backward in the 90 ° range while spraying the cleaning liquid onto the work W. As a result, the cleaning liquid is sprayed onto the upper surface and the peripheral surface of the work W from all directions of 360 °. still,
It is desirable that the nozzles attached to the pipe 35 and the short pipe 35a be capable of spraying the cleaning liquid with a certain degree of spread in order to spray the cleaning liquid evenly on the work W.

On the other hand, by the action of the horizontal cylinder 39a, the horizontal pipe 39 is moved to the lower side of the work W and reciprocally moved to spray the cleaning liquid into the deep hole portion WH to clean the deep hole portion WH. At this time, the works W are arranged in a plurality of rows in the reciprocating direction of the horizontal pipe 39, and when the horizontal pipe 39 moves to a position facing the deep hole portion WH of each work W, a proximity switch (not shown). This is detected by a sensor such as, and the horizontal pipe 39 is temporarily stopped at that position, or the moving speed is decelerated to extend the time when the horizontal pipe 39 and the deep hole portion WH are opposed to each other, and the horizontal pipe 39 is The cleaning liquid is blown into the deep hole portion WH from the attached nozzle to sufficiently wash the inside of the deep hole portion WH. Since the nozzle attached to the horizontal pipe 39 allows the cleaning liquid to reach deep inside the deep hole WH, it is desirable that the cleaning liquid can be ejected straight without spreading.

[0016]

As is apparent from the above description, according to the present invention, the cleaning liquid can be intermittently sprayed onto any part of the lower surface of the work, and the cleaning efficiency can be improved. Further, when the lower surface has a recess such as a deep hole, the inside of the recess can be sufficiently washed.

[Brief description of drawings]

FIG. 1 is a front view showing the configuration of the entire cleaning apparatus to which the present invention is applied.

[Figure 2] Plan view

FIG. 3 is a partial sectional view showing a state where a work is placed on a pallet.

FIG. 4 is a front view of a second cleaning chamber equipped with the cleaning device according to the present invention.

5 is a plan view of FIG.

[Explanation of symbols]

1 Input / Discharge Station 2 First Washing Room 3 Second Washing Room 4 Conveyor 31 Lifting Cylinder 32 Lifting Frame 35 Pipe 36 Swing Cylinder 37 Immersion Tank 39 Horizontal Pipe 39a Horizontal Cylinder 3A Spray Cleaning Part 3B Immersion Cleaning Part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiko Shimizu 1-10-1 Shin-Sayama, Sayama City, Saitama Prefecture Honda Engineering Co., Ltd.

Claims (2)

[Claims] 1. A cleaning device provided with a spray nozzle for spraying a cleaning liquid onto a lower surface of a work arranged in a cleaning chamber, wherein the spray nozzles are arranged in parallel in a width direction of a bottom surface of the work. A cleaning device comprising an injection nozzle moving means that reciprocates in a direction perpendicular to the juxtaposed direction so as to traverse below the work. 2. The work has a recessed portion such as a deep hole on the bottom surface, and the spray nozzle moving means temporarily stops or slows down the spray nozzle at a position where the spray nozzle faces the recessed portion. The cleaning device according to claim 1.