JPS5916985A - Method and apparatus for shortening aerial reaction time of object to be treated in automatic surface treatment - Google Patents

Abstract

PURPOSE:To prevent the progress of excessive treatment reaction due to an adhered chemical liquid in the air, in treating a material to be treated by immersing the same in a treating tank, by washing the material to be treated taken out of a chemical liquid at a position directly above the treating tank. CONSTITUTION:In treating a material F to be treated by electrolytic reaction or chemical liquid reaction, said material F to be treated is suspended by a truck mechanism including a truck 3 and immersed in the treating liquid L in a treating tank 1 to be treated by electrolytic reaction or etching reaction due to a chemical liquid. After preset treatment is completed, the material F to be treated is withdrawn upwardly from the treating liquid L by raising the basket 3f of the truck mechanism. At the same tiem, the tank lid 2 is slid to close the upper opening part of the treating tank 1 while the material F to be treated is washed by washing water from a nozzle S to wash off the chemical liquid adhered thereto and the progress of excessive reaction due to adhered chemical liquid is stopped. Washing water is discharged from the lid 2 through a receiving tray D to be prevented from entering the treating tank 1.

Description

Detailed Description of the Invention When a workpiece is treated by an electrolytic reaction or a chemical reaction, the workpiece is sequentially transferred and immersed in a series of treatment tanks according to several processing steps to achieve surface treatment. However, there are various conditions for this process, such as cases in which there is a severe reaction with the processed material in each step, cases in which the reaction is mild, or cases in which the reaction in the previous step is stopped in the next step. If we closely observe the actual reaction, when we move on to the next process after finishing a certain treatment process, the treatment chemical solution (including the electrolyte) in that process is 1. It adheres to the surface of the object to be treated and is lifted up into the air, then immersed in the tank solution for washing; there are varying degrees of success until the conditions for stopping the reaction are met through one set alternation, neutralization, and equal ratio. The reaction continues. Depending on the degree and type, the above-mentioned reactions often do not have a negative effect on the processing quality of the object to be processed, and in particular, severe conditions are required in automatic surface treatment equipment equipped with a tlAl conveying means aimed at mass production. It's here.

The present invention aims to solve the above-mentioned problems by minimizing the time required for the aerial reaction accompanying the reaction of the object to be processed in the normal processing tank, thereby eliminating its adverse effects.

An embodiment in which the present invention is applied to a program-controlled trolley transport system will be described with reference to the drawings.

Figure 1 shows a tank lid moving mechanism, a tank lid and a liquid/fluid discharge mechanism installed at the top of a treatment process tank (hereinafter referred to as the target tank) in which it is desired to shorten the aerial reaction time of objects to be treated according to the present invention, and the position directly above the tank lid. FIG. 2 is a side sectional view at the target tank position showing a state in which the shower device and the cover device mounted on the carrier vehicle stopped at the tank top mechanism are related to each other, and FIG. 2 is a front view of FIG. (Front view) There is a cloud.

b) The workpiece (F) held by the cart mechanism (3, 3a to 3f) via the carrier bar (C) from the previous process is transferred to the target tank (
1) An ordinary person is immersed in the treatment solution (I,) in the tank and placed at U- (the position indicated by the solid line in Figure 1.2), and at the same time the treatment reaction starts and the prescribed treatment time is reached. It is set to continue.

(Exit) When the object to be processed is fixed, the transport vehicle will move to the bus get (3F)
) and the carrier bar (C) and move to another operation on the traveling rail (4) using the traveling wheels (3e) for transporting other process tanks or other processed materials, etc. It has become.

c) In the target tank, the tank lid body (2) is the tank lid rail (lb)
The top is moved directly above the treatment tank body (1) (indicated by two-dot chain line) by the tank lid moving wheels (2a) and the moving power (not shown).
The target tank is moved to the position shown in FIG. .

d) Immediately before the processing time in the target tank expires, the trolley mechanism arrives near the top of the target tank according to program control and waits 1. Subsequently, the tank lid body is moved from directly above the tank body by the reverse operation in the previous section. (position indicated by the solid line in Figure 1) In other words, when the top of the tank is released, the basket (3b) for lifting and lowering the transported object further descends to the position where it can engage with the carrier no.
．． (solid line position in Figure 2).

e) At the same time as the processing time expires (program, timer (
(y) etc.) The trolley mechanisms operate respectively)
The lower end of (3b) engages the upper part of the carrier t Lifting sprocket (3d) and lifting sprocket (3C)
is driven, and the connected elevator basket is raised along the elevator guide rail (3a) via the guide roller (3f) (the position indicated by the two-dot chain line).

) At this time, the position of the object to be treated (upper limit, lower limit, etc.) is detected by a signal from the position detection (detector such as a micro switch or phototube switch, not shown), and the object is moved above the target tank by an operation similar to ()\). The upper part is sealed with a tank lid body in the form of a liquid leaf holder (shaped like a sink). Further, the lower end of the scattering prevention cover (K) attached to the truck body (3) close to the upper edge is stopped and connected to the upper edge of the tank lid.

In other words, the object to be treated (F) is lifted into the air via the carrier bar (C), and is separated by the scattering prevention cover (K) and the tank lid body (2).
It is in a state where it is held suspended by the basket (3b) in the area surrounded by.

Subsequently, the shower device is operated and the cleaning liquid injection pump (P
), the washing water or neutralization liquid is poured onto the workpiece (position F') from the spray nozzle (S) through piping from the washing liquid loading tank (T), and the liquid flow is directed to the tank lid body. (
2), and is discharged via piping to a required location by a cleaning liquid discharge pump (WP) via a liquid discharge tray (D).

It goes without saying that this cleaning solution can be recycled, recycled, disposed of, or replaced as desired.

g) At that point, the object to be treated that has been subjected to the above-mentioned cleaning treatment will, of course, stop the aerial reaction that has continued from the treatment reaction in the tank, but it will also take a while to wait until the flow of the cleaning solution has completely stopped. In order to reduce the time, it is possible to start the movement of the conveyor cart at an appropriate time (by adjusting the timer, etc.), that is, to match the speed to the direction of movement. The receiving time is effectively extended from the standstill state, which is an advantageous measure depending on the movement of the workpiece and the program as it moves along the processing steps.

h) In the above-mentioned situation (c), the gas and mist generated during the treatment reaction are sometimes absorbed and removed from the liquid space in the sealed target tank by the generated gas exhaust blower (Bχ', that is, in this process. Almost no generated gas or mist is dissipated into the surrounding area.

By configuring the functions in accordance with the above-mentioned order of action, the workpiece is subjected to regular treatment reactions in the target tank as necessary, minimizing the aerial reaction time that could easily lead to harm. In other words, it is extremely effective in stably improving processing quality. The main method is to shorten the airborne residence time using a secondary speed amplifier, and its limits are clear. In particular, when heat is generated depending on the type of reaction, the processing liquid adhering to the surface of the object to be processed evaporates in the air while concentrating and controlling the reaction. Under adverse conditions, the object to be processed may partially over-react, resulting in defective products. It may happen.

However, according to the present invention, (i) when the object to be treated is pulled out of the tank liquid, the tank lid is slid almost simultaneously, and the top of the tank is sealed, and then the object to be treated is washed with a shower. Since the time for the reaction to continue in the air can be minimized, most of the negative effects are eliminated.

(11) Also, since it protects the chemical solution in the target tank from infiltration with the cleaning solution, it is safe for management and maintenance of the processing chemical solution, and the cleaning solution can be used in a wide range of ways, including not only washing water but also neutralizing solution showers. In addition, economic benefits can be expected by adopting a liquid flow discharge mechanism that enables circulation and reuse.

(iii) Also, most of the gas and mist generated by the processing reaction in the target tank are discharged from the exhaust blower since the tank is sealed with a lid.
Since it can be discharged under controllable conditions, it is safe and highly effective as a pollution control measure.

[Brief explanation of the drawing]

Figures 1 and 2 show a configuration and an embodiment for carrying out the method of shortening the reaction time in the air of the object to be treated according to the present invention. FIG. 2 is a side sectional view (a sectional view along the center line of the continuous tanks) at the treatment process tank position when installed in an automatic surface treatment apparatus, and FIG. 2 is a front view (partial sectional view) thereof. 1: Treatment tank main body, 1a: Part of the cover attached to the tank, ■b: Rail for tank lid, 2: Tank lid (liquid leaf receiving type fl) 2a: Wheels for moving the tank lid, 3: Cart body, 3a: Lifting Gai)”l/-ru,
3b: Lifting basket, 3c: Lifting ceno, 3d:
Lifting sprocket, 3e: Wheel for trolley running, 3f: Guy bicoro (for lifting basket) 4: Trolley running rail, 4
b2 running rail support column, C: carrier bar (for holding and transporting the workpiece), M: lifting drive motor, F: workpiece (F
' is the aerial position), L: Processing liquid, T: Washing liquid loading tank,
P: Cleaning liquid injection bong, S: Spray nozzle, K゛: Scattering prevention cover, D: Liquid discharge tray, wP: Washing liquid discharge pump, B: Generated gas discharge blower - Patent applicant Katsukawa Kogyo Co., Ltd. Figure 1 n Figure 2

Claims (1)

[Scope of Claims] 1. In an automatic surface treatment apparatus having means for automatically transporting objects to be treated one by one in accordance with the treatment process of the objects to be treated on consecutive treatment tanks, , JAVA cleaning is applied to the workpieces that have been processed in the same treatment tank immediately above the desired process treatment tank, such as etching, and the cleaning solution is not mixed into the treatment tank liquid immediately below or in the treatment tank liquids in the vicinity. A method for shortening the in-air reaction time of a workpiece in automatic surface treatment, characterized by: 2. In an automatic surface treatment device, a tank lid with a liquid fluid collecting/receiving shape is installed in the upper part of the desired processing tank, a tank lid moving mechanism section and a liquid fluid discharge mechanism connected to the tank lid are installed, and a transport mechanism for the object to be treated is installed. Attached to the tank is a shower device that stops the injection when the material to be treated is carried into the processing tank and then discharged, and a cover device is installed to prevent the sprayed liquid flow from scattering around. By interlocking and tightening each of the above-mentioned mechanisms in response to the movement of the position of the object to be processed in the processing tank by the automatic conveyance function, the object to be processed is washed immediately after being lifted directly above the processing tank, and the cleaning liquid is removed. A device that shortens the aerial reaction time of objects to be treated in automatic surface treatment, which collects and collects objects.