JPH0238599A - Liquid level regulating and immersing device in chain carrier - Google Patents

Abstract

PURPOSE:To regulate the immersion time of an article to be plated in a main vessel by drawing out and introducing liquid between the main vessel and a circulation tank in a plating line and regulating the liquid amount in the main vessel. CONSTITUTION:An article A to be plated is sent to the ensuing stage by a chain carrier and stopped in a vessel. A tact timer 10 starts to count time. At this point of time, a pickling tank 5c is made vacant. A solenoid valve 7 is closed after T1 minute and a circulating pump 8 is actuated and liquid is sucked up from a circulation tank 6 and fed to the pickling tank 5c. The solenoid valve 7 is opened by a timer 9 after T2 minute and the circulating pump 8 is stopped. The liquid is returned to the circulation tank 6 from the pickling tank 5c and this pickling tank 5c is made vacant and waits tact time. Pickling treatment time is regulated to T2 minute. Treatment time in the respective stages of the plating line can be freely set by an inexpensive cost of installation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a conveying device in a plating line, and is used to adjust the immersion time of a product in a liquid.

(Prior art) As a prior art related to the present invention, when a plating line includes a short-time processing step that does not meet the tough 1-time, a hoist type conveyance system or an electric heater type conveyance system is used. A slow descent device is used to lower the product to be plated in a processing tank over time.

(Problem to be Solved by the Invention) However, as shown in FIG. 4, the slow-lowering device includes a lifting device 16 that lifts and lowers the hanger 14 and a cylinder in order to lift the product A to be plated from the plating tank 13. However, the elevating and lowering mechanism and the slowing down mechanism are complicated mechanisms and require high equipment costs. Another problem is that the chain (general feed system) currently in use cannot be easily modified to a device having a slow descent mechanism.

The technical problem of the present invention is to create a conveyance system that can perform short-time processing steps without using a complicated slow-down device when a short-time processing step is included in the chain transport process of a plating line. It is something.

[Structure of the invention]

(Means to solve the problem) The technical means taken to solve the above technical problem are as follows.

When the chain conveyance device of a plating line includes a short-time processing process that does not match the takt time, a main tank, a spare circulation tank, a circulation pump, a timer, and a solenoid valve are installed for the short-time processing process. , A chain that adjusts the liquid immersion time in the main tank by sucking up the liquid from the main tank or supplying the liquid from the circulation tank to the main tank to adjust the liquid volume in the main tank, and adjusting the liquid immersion time for the products to be plated in the main tank. This is an immersion device for adjusting the liquid level during transportation.

(Function) In a plating line that consists of the steps of degreasing, washing with water, pickling, washing with water, plating, and washing with water, the pickling process is a short-time processing process, and the liquid in the pickling tank is sucked up by a circulation pump and circulated. The liquid is sent to the preliminary tank, the main pickling tank is emptied, and after a certain period of time, the liquid is supplied to the pickling tank again using a timer, solenoid valve, and circulation pump to pickle the products to be plated. The immersion time can be freely adjusted using a timer, solenoid valve, and circulation pump without using a complicated elevating mechanism or slowing down mechanism.

(Example) Examples will be described below.

In FIG. 1, 1 is a plating line, 2 is a conveyance device, 3 is a motor, and 4 is a general transportation chain that moves the products to be plated.

5 is a plating tank, 5a is a degreasing tank, 5b is a water wash, 5C is a pickling tank, 5d is a water wash, 5e is a Sn plating tank, and 5f is a tank used for each process of water washing.The conveyor chain moves at a constant speed. Therefore, each process takes a certain amount of time, but the pickling process (5c) requires less time to immerse in acid compared to the other processes, and for this reason, the conventional plated products are removed from the chain. The amount of acid in the tank is sucked out using a pump to reduce it, or the amount of acid in the tank is increased by supplying it without holding it in two parts, and the time that the product to be plated is immersed in the acid is adjusted by the amount of liquid in the tank. It is something to do.

Figure 2 is an explanatory diagram of the pickling tank system, where 5C is a pickling tank, 6 is a pickling circulation tank, 7 is a solenoid valve, 8 is a circulation pump, and 9 is a pickling tank.
is a timer, and 10 is a tact timer.

To explain the operation of the above-described structure, FIG. 1 shows that at the start of the operation, the article to be plated is conveyed to the next step by chain conveyance and stopped in the tank. In this case, pickling tank 5
The liquid in c is empty. At this point, the tact timer 10 starts counting time. At this time, the pump 8 is OFF, the solenoid valve 7 is ON and open, and the pickling tank is empty or nearly empty.

After that, after T0 minutes, the circulation pump 8 is turned on, and the solenoid valve 7
is turned OFF, and the circulation pump 8 begins to suck up the liquid from the pickling circulation tank 6 and supplies it to the pickling tank. (The liquid returns to the circulation tank 6 by the overflow 11 after a certain point.)

) Timer 9 starts counting time from T1 minute later.
After 2 minutes, by turning off the circulation pump 8 and turning on the solenoid valve 7, the liquid returns from the pickling tank 5c to the circulation tank 6, the pickling tank 5c becomes empty again, and the takt time is reached. A little less than a minute is the pickling treatment time. Figure 3 shows the takt time and the operating status of the pump and solenoid valve.

As a result of the above actions, for example, in a process where chain tact requires pickling for about 20 seconds compared to about 5 minutes, performing the above-mentioned action of pickling alone can make the entire process more convenient. It is something that can be determined.

〔Effect of the invention〕

The present invention has the following effects. That is, (1) the processing time of each process can be set freely, and with simple improvements it has become possible to handle various processes on the plating line.

(2) Equipment cost is extremely low.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of this embodiment, FIG. 2 is an explanatory diagram of essential parts of this embodiment, FIG. 3 is an explanatory diagram of operation in the embodiment of the present invention, and FIG. 4 is a diagram showing a conventional technique. 2...Transportation chain 3...Circulation motor 5...Each plating tank 5 C. 6. timer

Claims (1)

[Claims] When the chain conveyance device of a plating line includes a short-time processing process that does not match the takt time, a main tank, a spare circulation tank, a circulation pump, a timer, and a solenoid valve are installed for the short-time processing process. A chain is used to adjust the amount of liquid in the main tank by sucking up the liquid from the main tank to the circulation tank or supplying the liquid from the circulation tank to the main tank, and to adjust the immersion time of the products to be plated in the main tank. Immersion device for adjusting liquid level during transportation.