JPH0839016A - Work processing device - Google Patents

Abstract

PURPOSE:To prevent mixing of different kinds of liquids in a liquid introduction line. CONSTITUTION:In a work processing device, a plurality of kinds of liquids stored in a plurality of liquid storage tanks respectively are introduced to a work in a housing for processing the work, and two lines of liquid introduction, one for an alkaline liquid introduction line (alkaline liquid inflow pipe sections 30a-30c, alkaline radical pipe section 40a and alkaline liquid jet pipe section 50, and the other for an acidic liquid introduction line (acidic liquid inflow pipe sections 30d-30f, acidic radical pipe section 40d and acidic liquid jet pipe section 50d), are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work processing apparatus for sequentially processing a work with a plurality of types of liquids.

[0002]

2. Description of the Related Art Conventionally, as a work processing apparatus of this type,
There are the following. The apparatus has a housing for containing a work, a plurality of liquid storage tanks, and a liquid guide path. The plurality of liquid storage tanks include, for example, a degreasing agent tank that stores a degreasing agent, a rust preventive agent tank that stores a rust preventive agent, and a cleaning water tank that stores cleaning water. The liquid guide path guides the liquid contained in each tank toward the work in the housing, and has an inflow pipe, a base pipe portion, and a liquid ejection pipe portion. Each inflow pipe is connected to each liquid storage tank, and each inflow pipe is connected so as to join the base pipe portion in the housing. The liquid ejection pipe portion is connected to the base pipe portion. The liquid ejection pipe portion is provided in the housing so as to surround the work, and the liquid ejection pipe portion has ejection holes. Then, first, the degreasing agent in the degreasing agent tank flows into the base pipe portion through the inflow pipe, flows into the liquid ejection pipe portion, and is ejected from the ejection hole to the work. Next, in the same manner, the cleaning water in the cleaning water tank is jetted onto the work. In this way, for the work,
Degreasing agent, washing water, rust preventive agent, and washing water are sequentially ejected to degrease and prevent rust on the work.

[0003]

However, in the above apparatus, the base pipe part and the liquid jetting pipe part through which each liquid flows in from each inflow pipe have one system, and therefore, there are the following problems. That is, when the rust preventive agent (acidic) is jetted to the work after the degreasing agent (alkaline) is jetted to the work, both liquids flow through the same base pipe part and liquid jet pipe part, so After the agent has flowed, the degreasing agent remains in the base pipe portion and the liquid ejection pipe portion to some extent, and when the rust preventive agent flows next time, both liquids will be mixed. Then, a mixture of both liquids is ejected to the work, and the predetermined processing for the work is not properly performed. However, as described above, the cleaning water is circulated and jetted onto the workpiece between the degreasing agent flowing / jetting and the rust preventive agent flowing / jetting, but still both liquids are mixed to some extent. Will end up. Further, if it is necessary to prevent both liquids from mixing, it is necessary to flow a large amount of cleaning water, which results in waste of water.

Therefore, it is an object of the invention according to claim 1 to provide a work processing apparatus in which liquids of different types are not mixed in the liquid guide path (first problem).

Further, the above-mentioned conventional work processing apparatus is not provided with a mechanism for appropriately reusing the liquid introduced to the work. Then, the invention which concerns on Claim 2 makes it a subject to provide the apparatus with which the liquid introduce | transduced with respect to a workpiece | work is appropriately reused (2nd subject).

Further, in this type of work processing apparatus, when a predetermined liquid is introduced from a certain liquid guide path to a work and then another liquid is introduced from another liquid guide path, the first liquid guide path is introduced. It is desirable that the liquid remaining in the liquid passage surely flows out before the next liquid outflow. However, in the above-mentioned conventional device, such a special mechanism is not provided, and it is common to wait for the natural droop. Therefore, an object of the invention according to claim 3 is to provide an apparatus capable of promptly flowing out the liquid remaining in the liquid guide path (third problem).

An object of the invention according to claim 4 is to provide an invention which solves all the first to third problems.

[0008]

In order to solve the first problem, in the invention according to claim 1, a plurality of types of liquids respectively stored in a plurality of liquid storage tanks are stored in a housing by a liquid guide path. In a work processing device in which the work is processed by being guided to the work, the liquid guide path for guiding the liquid contained in the plurality of liquid storage tanks to the work is It is characterized in that multiple systems are provided according to the type.

Further, in order to solve the second problem, the invention according to claim 2 is that a plurality of kinds of liquids respectively stored in a plurality of liquid storage tanks are introduced into a work in the housing by a liquid guide path. A work processing device for processing a work by being guided, wherein an outflow portion for flowing out the liquid after being guided to the work to the outside of the housing, and the liquid flowing out from the outflow portion. And a selective return mechanism for selectively guiding the liquid to a predetermined direction out of the plurality of liquid storage tanks or drainage paths.

In order to solve the third problem, in the invention according to claim 3, a plurality of types of liquids respectively stored in a plurality of liquid storage tanks are introduced to the work in the housing by the liquid guide path. A work processing apparatus in which the work is processed by being guided, wherein the liquid guide path has a base pipe part and a liquid ejection pipe part, and the base pipe part is provided from the liquid storage tank. A conduit through which liquid flows, having a height difference that gradually decreases from the base end to the tip,
The liquid ejection pipe portion has an ejection hole for ejecting the liquid flowing from the base pipe portion onto the work, and the tip end portion of the base pipe portion is exposed in the housing, Further, a switching mechanism for switching the communication state of the tip end portion is provided, and an air supply device is connected to the base end portion of the base pipe portion.

In order to solve all of the first to third problems, the invention according to claim 4 is the work processing apparatus according to claim 1, which is after the work is guided to the work. Outflow part for outflowing the liquid to the outside of the housing, and a selective return mechanism for selectively guiding the liquid outflowing from the outflow part to a predetermined direction of the plurality of liquid storage tanks or drainage paths. And, and the liquid guiding path has a base pipe part and a liquid jetting pipe part, and the base pipe part is a pipe line into which the liquid from the liquid storage tank flows, There is a height difference such that it gradually decreases from the base end portion to the tip end portion, and the liquid ejection pipe portion has ejection holes for ejecting the liquid flowing from the base pipe portion onto the work. , The tip of the base tube is exposed in the housing, Has switching mechanism is provided for switching the communication state of its distal end, the proximal end portion of the base pipe portion is characterized in that the air supply device is connected.

[0012]

In the invention according to claim 1, the liquids stored in the plurality of liquid storage tanks are guided to the work in the housing by the liquid guiding paths provided in a plurality of systems according to the types of the liquids. Be guided by. For this reason, different types of liquid are prevented from mixing in the liquid guide path.

Further, in the invention according to claim 2, when the liquid is guided from the plurality of liquid storage tanks to the work by the liquid guiding path and then flows out from the inside of the housing through the outflow portion, the liquid is The selective return mechanism selectively guides the liquid to the predetermined direction out of the plurality of liquid storage tanks or drainage paths.

Further, in the invention according to claim 3, after the liquid is ejected from the ejection hole of the liquid ejection pipe portion to the work, the tip end portion of the base pipe portion is opened by the switching mechanism, The liquid remaining in the base pipe portion flows out into the housing based on the height difference from the base end portion to the tip end portion of the base pipe portion. Further, by supplying air from the air supply device to the base pipe portion, at least the liquid remaining in the liquid ejection pipe portion is forced to flow out into the housing from the ejection hole.

Further, in the invention according to claim 4, all the effects of the inventions according to claims 1 to 3 can be obtained.

[0016]

Next, an embodiment of the present invention will be described with reference to the drawings. This work processing apparatus degreases the surface of the work W and performs rust prevention processing. As shown in FIGS.
This work processing apparatus includes a housing 10, a plurality of liquid storage tanks 20a to 20f, and liquid transfer paths (30a to 30f,
40a, 40d, 50a, 50d) and a selective return mechanism 60 and the like. It also has a controller (not shown).

As shown in FIG. 1, the housing 10 accommodates the work W and has a work loading / unloading door 12 for loading / unloading the work W. The bottom of the housing 10 has a gentle slope. A vertical cylindrical outflow portion 14 is provided at the deepest portion. Housing 10
A work mounting table (not shown) is provided in the lower part of the inside. The work mounting table is for circulating a liquid. The housing 10 is also provided with a hot air supply device (not shown).

As shown in FIGS. 1 and 3, as the plurality of liquid storage tanks 20a to 20f, a degreasing agent tank 20a, a first cleaning water tank 20b, a surface conditioning agent tank 20c, a rust preventive agent tank 20d,
A second cleaning water tank 20e and a warm water tank 20f are provided.
These are provided at the bottom of the housing 10. A degreasing agent (alkaline) is stored in the degreasing agent tank 20a. Cleaning water is stored in the first cleaning water tank 20b and the second cleaning water tank 20e. The surface conditioning agent tank 20c contains a surface conditioning agent (alkaline) for pretreatment for rust prevention. A rust preventive agent (acidic) is stored in the rust preventive agent tank 20d. Hot water is stored in the hot water tank 20f. Further, drainage pipes 28a and 28d are also provided in parallel with the liquid storage tanks 20a to 20f. The drainage pipes 28a and 28d are for discharging the liquid to the outside.

The above-mentioned liquid conduits (30a ...
30 f, 40 a, 40 d, 50 a, 50 d) guide the liquid stored in each of the liquid storage tanks 20 a to 20 f toward the work W in the housing 10, and the inflow pipe 30.
a to 30f, base pipe portions 40a and 40d, and liquid ejection pipe portion 50
a, 50d. As shown in FIG. 1 and FIG. 3, the inflow pipes 30a to 30f are respectively connected to the liquid storage tanks 20a to 20f.
It is provided for each 0f. Each inflow pipe 30a-3
Pumps 32a to 32f are provided at 0f. As shown in FIG. 2, the inflow pipes 30 a to 30 f extend upward and enter the housing 10. The inflow pipes 30a to 30c provided in the degreasing agent tank 20a, the first cleaning water tank 20b, and the surface conditioning agent tank 20c are referred to as alkaline system inflow tubes. Further, the inflow pipe 30 provided in the rust preventive agent tank 20d, the second cleaning water tank 20e, and the hot water tank 20f.
Let d to 30f be acidic system inflow pipes.

On the other hand, as shown in FIG.
An alkaline base pipe part 40a and an acidic base pipe part 40d are provided in the lower part of the inside. The alkaline inflow pipes 30a to 30c are the alkaline base pipe portions 40.
The acidic inflow pipes 30d to 30f are joined to the acidic base pipe portion 40d. Further, on-off valves 34a to 34f are provided on the near side of each confluence.

Both the alkaline base pipe portion 40a and the acidic base pipe portion 40d are substantially horizontal, but from the base end portion (on the side of the check valves 42a and 42d described below) to the tip end portion (also the opening portion 46).
The slope is provided so that it becomes gradually lower toward (a, 46d side). Check valves 42a and 42d and an air supply device 4 are provided on the base end side of each of the base pipe portions 40a and 40d.
4a and 44d are provided. Each base pipe part 40a, 40
The tip portion of d is an opening portion 46 that opens into the housing 10.
a and 46d. Further, on-off valves 48a and 48d are provided immediately in front of the valves.

An alkaline liquid jet pipe portion 50a is connected to the alkaline base pipe portion 40a. Further, the acidic liquid jet pipe portion 50d is connected to the acidic base pipe portion 40d. Each of the liquid ejection pipe portions 50a and 50d has a loop shape so as to surround the work W. Each of the liquid ejection pipe portions 50a and 50d has a plurality of ejection holes 52.
a and 52d are provided.

The above alkaline inflow pipes 30a to 30
The alkaline base pipe part 40a and the alkaline liquid jet pipe part 50a form an alkaline liquid guide path.
Further, the acidic inflow pipes 30d to 30f and the acidic base pipe portion 40
The d and the acidic liquid ejection pipe portion 50d form an acidic liquid guide path. In this way, the liquid guide path is separated into an alkaline system and an acidic system and is provided as a separate system.

As shown in FIG. 1, the selective return mechanism 6
0 is a housing 10 and a plurality of liquid storage tanks 20a-2
It is provided as follows between 0f and the drain pipes 28a and 28d. An outflow pipe 62 is provided for the outflow portion 14 provided in the lower portion of the housing 10. The outflow pipe 62 has a cylindrical rotary connecting portion 63 corresponding to the outflow portion 14, and is rotatable with respect to the outflow portion 14 at the rotary connecting portion 63. An oblique pipe portion 64 is formed at a lower portion of the rotary connection portion 63 so as to extend obliquely downward.
A vertical pipe portion 65 is formed below the oblique pipe portion 64.

On the other hand, the aforementioned plurality of liquid storage tanks 20a ...
The fixing plate 6 is provided on the upper part of 20f and the drain pipes 28a and 28d.
8 are provided, and the inlets 22a to 22f and the drainage pipes 28a and 28d of the liquid storage tanks 20a to 20f are connected to the holes 69 formed in the fixed plate 68.

A rotary disc 70 is provided on the fixed plate 68 as follows. The central axis 72 of the rotating disk 70
Are provided on the fixed plate 68 via bearings 73. A chain (not shown) is attached to the side peripheral surface of the rotating disk 70, and the chain is a sprocket 76 provided on the rotating shaft of a motor 75 (having a speed reducer).
Have been meshed with. The vertical pipe portion 65 of the outflow pipe 62 is connected to the hole portion 71 provided in the rotating disc 70. Therefore, as the rotation shaft of the motor 75 rotates, the rotating disk 70 rotates about the central axis 72, and the outflow pipe 62 (vertical pipe portion 65) is moved to the respective liquid storage tanks 20a according to the rotation angle. .About.20f or the drainage pipes 28a and 28d.

Next, the control content (action) of this work processing apparatus will be described. First, the degreasing agent in the degreasing agent tank 20a flows into the alkaline base pipe section 40a through the inflow pipe 30a by the action of the pump 32a (at that time, the opening / closing valve 34a is in an open state), and the alkaline liquid is further added. It flows into the ejection pipe portion 50a and is ejected to the work W from the ejection hole 52a. As a result, the work W is degreased. At that time, the on-off valve 48a is closed. Further, at that time, in the selective return mechanism 60, the vertical pipe portion 65 of the outflow pipe 62 is provided with the degreasing agent tank 20a.
Has been adapted to. Therefore, the degreasing agent ejected onto the work W passes through the outflow pipe 62 and the degreasing agent tank 2
Return to 0a.

Next, the cleaning water in the first cleaning water tank 20b is
By the action of the pump 32b, it flows into the alkaline base pipe part 40a through the inflow pipe 30b, further flows into the alkaline liquid jet pipe part 50a, and is jetted to the work W from the jet hole 52a. At that time, in the selective return mechanism 60, first, the vertical pipe portion 65 of the outflow pipe 62 is first.
Corresponds to the drain pipe 28a. Therefore, the wash water is discharged to the outside through the drain pipe 28a. The discharged cleaning water is mixed with the degreasing agent as it flows through the vertical pipe portion 65 or the alkaline liquid jet pipe portion 50a or comes into contact with the work W. After that, the outflow pipe 6 of the selective return mechanism 60
The second vertical pipe portion 65 is made to correspond to the first cleaning water tank 20b. Therefore, the wash water is the first wash water tank 20.
Return to b. The mixing ratio of the degreasing agent to the cleaning water at that time is lower than the above. In this way, the work W is cleaned.

Similarly, the surface conditioner (alkaline) in the surface conditioner tank 20c flows through the inflow pipe 30c, the alkaline base pipe portion 40a and the alkaline liquid jet pipe portion 50a and is jetted to the work W, It is returned to the surface conditioning agent tank 20c by the selective return mechanism 60. In this way, the surface adjustment processing of the work W is performed.

Next, the rust preventive agent (acidic) in the rust preventive agent tank 20d
However, by the action of the pump 30d, it flows into the acidic base pipe portion 40d via the inflow pipe 30d, further flows into the acidic liquid jet pipe portion 50d, and is jetted to the work W from the jet hole 52d. Similarly to the above, the on-off valve 48d is closed. The selective return mechanism 60 returns the rust preventive agent to the rust preventive agent tank 20d. In this way, the work W is rustproofed.

Next, as in the case of the first cleaning water tank 20b described above, the cleaning water in the second cleaning water tank 20e flows into the inflow pipe 30.
e, the acidic base pipe portion 40d, and the acidic liquid jet pipe portion 50d to be jetted onto the work W. Then, the jetted cleaning water is first discharged from the drain pipe 28d by the selective return mechanism 60, and then returned to the second cleaning water tank 20e. As previously mentioned,
This is because the degree of mixing of the rust preventive agent is larger as it is at the initial stage. In this way, the work W is cleaned.

Next, the hot water in the hot water tank 20f flows into the inflow pipe 3
0f, acidic base pipe part 40d, acidic liquid jet pipe part 50d
And is jetted to the work W and returned to the hot water tank 20f by the selective return mechanism 60. In this way, the work W is washed with warm water.

After that, the above-mentioned hot air supply device (not shown) is operated, and the hot air drying process of the work W is performed.

As described above, in this apparatus, the liquid introducing passages (inflow pipes 30a to 30f, base pipe portions 40a and 40d, liquid ejection pipe portions 50a and 50d) are of alkaline type and acidic type. There are two systems, and the alkaline liquid is an alkaline liquid guiding passage (inflow pipes 30a to 30c, base pipe portion 4
0a, the liquid ejection pipe portion 50a), and the acidic liquid is an acidic liquid guide passage (inflow pipes 30d to 30f, base pipe portion 40d,
Since the liquid ejection pipe portion 50d) flows, both kinds of liquids do not mix in the liquid guide path, and an appropriate work process is performed.

Further, the liquid ejected onto the work W is appropriately returned to the predetermined liquid storage tanks 20a to 20f by the selective return mechanism 60, and the drain pipes 28a, 2f.
Since it is discharged from 8d, it is ensured that various liquids are appropriately used many times.

Further, this device also has the following function. For example, after the alkaline liquid is ejected,
By opening and closing the opening / closing valve 48a of the alkaline base pipe portion 40a, the alkaline base pipe portion 40a is tilted based on the above-described downward inclination from the base end portion to the distal end portion of the alkaline base pipe portion 40a. The liquid remaining therein flows out into the housing 10 through the opening 46a (so-called drooping). Then, after that, the open / close valve 48
a is in a closed state (or may be in a semi-open state or an open state), the air supply device 44a to the alkaline base pipe portion 40
Air is supplied to a. Then, due to the air pressure, the liquid remaining in the alkaline liquid ejection pipe portion 50 a (and the alkaline base pipe portion 40 a) is ejected into the ejection hole 52.
It flows out into the housing 10 from a (and opening 46a). The same thing is performed in the acidic base pipe portion 40d and the acidic liquid jet pipe portion 50d. In this way, the base pipe portions 40a, 40d and the liquid ejection pipe portions 50a,
Since the liquid remaining in 50d quickly flows out (cuts off) to the outside (inside the housing 10), the mixing of liquids (mixing of alkaline liquids or mixing of acidic liquids) is minimized. In addition, the transfer of different liquids to the ejection can be performed quickly in a short time, and the overall processing time of the work W is shortened.

[0037]

According to the first aspect of the present invention, since different kinds of liquids are prevented from mixing in the liquid guide path, the liquids are appropriately treated.

Further, according to the second aspect of the invention, the liquid after being guided to the work is selected by the selective return mechanism to a predetermined direction of the plurality of liquid storage tanks or drainage paths. The proper recycling of the liquid is carried out as a result of being guided.

According to the third aspect of the invention, since the liquid remaining in the base pipe portion and the liquid ejection pipe portion of the liquid guiding passage effectively flows into the housing, different liquids (same liquid guiding passage Liquid mixing is minimized when ejecting liquid). In addition, the transfer of different liquids to the ejection is performed quickly, and the work efficiency is improved.

According to the invention of claim 4, all the effects of the inventions of claims 1 to 3 can be obtained.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing an embodiment of the present invention.

FIG. 2 is a perspective view centering on an upper portion (housing) of the apparatus of FIG.

3 is a cross-sectional view of the lower part of the device of FIG.

[Explanation of symbols]

 10 Housings 20a to 20f Liquid storage tanks 28a, 28d Drainage pipes 30a to 30c Alkaline system inflow pipes 40a Alkaline system base pipe parts 50a Alkaline system liquid ejection pipe parts 50a 30d to 30f Acidic system inflow pipes 40d Acidic system base pipe parts 44a, 44d Air supply device 48a, 48d Switching valve (switching mechanism) 50d Acidic liquid jetting pipe portion 50a 52a, 52d Jetting hole 60 Selective return mechanism

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location C25D 17/00 E

Claims (4)

[Claims] 1. A work processing apparatus, wherein a plurality of types of liquids respectively stored in a plurality of liquid storage tanks are guided to a work in a housing by a liquid guide path to process the work. The work processing apparatus, wherein a plurality of systems are provided for the liquid guiding paths for guiding the liquids stored in the plurality of liquid storage tanks to the work depending on the types of the liquids. 2. A work processing apparatus, wherein a plurality of kinds of liquids respectively stored in a plurality of liquid storage tanks are guided to a work in a housing by a liquid guide path to process the work. An outflow part for outflowing the liquid after being guided to the work to the outside of the housing, and a predetermined direction of the liquid outflow part for the liquid outflow part from the plurality of liquid storage tanks or drainage paths. A work processing apparatus having a selective return mechanism for selectively leading to the work processing apparatus. 3. A work processing apparatus, wherein a plurality of types of liquids respectively stored in a plurality of liquid storage tanks are guided to a work in a housing by a liquid guide path to process the work. The liquid guide path has a base pipe part and a liquid ejection pipe part, and the base pipe part is a pipe line into which the liquid from the liquid storage tank flows, and from the base end part to the tip part. There is a height difference so as to gradually decrease, the liquid ejection pipe portion has an ejection hole for ejecting the liquid flowing from the base pipe portion to the work, the base pipe portion of the The distal end portion is exposed inside the housing, and a switching mechanism for switching the communication state of the distal end portion is provided, and an air supply device is connected to the proximal end portion of the base pipe portion. Work processing device characterized by. 4. The work processing apparatus according to claim 1, wherein an outflow part for outflowing the liquid after being guided to the work out of the housing, and the liquid outflowing from the outflow part. And a selective return mechanism that selectively guides the liquid to a predetermined direction of the plurality of liquid storage tanks or drainage paths, and the liquid transfer path includes a base pipe part and a liquid ejection pipe part. The base pipe part is a pipe line into which the liquid from the liquid storage tank flows, and has a height difference that gradually decreases from the base end part to the tip part, The portion has an ejection hole for ejecting the liquid flowing in from the base pipe portion onto the work, and the tip portion of the base pipe portion is exposed in the housing, and the tip thereof is provided. A switching mechanism that switches the communication state of the Work processing system, characterized in that said proximal end portion of the base pipe portion is connected to an air supply.