JPH08239781A - Treating liquid storage tank - Google Patents

Abstract

PURPOSE: To provide a treating liquid storage tank capable of maintaining the treating capacity of a treating liquid and eliminating the variation in the treatment of metallic parts with extremely simple constitution. CONSTITUTION: This treating storage tank is provided with treating vessels A, B, C, having working vessels 5A, 5B, 5C in which various kinds of treating liquids are stored and auxiliary vessels 4A, 4B, 4C in which the treating liquids overflowing from these working vessels are stored. The working vessels and the auxiliary vessels are connected by circulation paths 7 for each of the respective treating vessels. The partition walls for parting the respective auxiliary vessels from each other are constituted in a staircase so that the treating liquids can flow to the adjacent auxiliary vessels. The working vessel existing on the extreme upstream side is provided with a treating liquid supply pipe 9 for supplying always the fresh treating liquid. As a result, always the fresh treating liquid is passed between the respective treating vessels and, therefore, the treating capacity of the treating liquids is maintained constant by the simple constitution. Since the partition walls to part the auxiliary vessels from each other are formed in the staircase form, the treating capacity is made higher more the upstream side and the stable treatment of the metallic parts is executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing liquid storage tank for storing a processing liquid for performing various kinds of processing on metal parts such as screws and rivets.

[0002]

2. Description of the Related Art Conventionally, a metal part has been subjected to a cleaning process for removing oil and fat and the like attached to the surface immediately after processing, and then a polishing process for obtaining a surface gloss. In such cleaning treatment and polishing treatment, a treatment liquid such as an alkali cleaning liquid and a compound liquid is used, and the metal parts are agitated in the treatment liquid and subjected to cleaning or polishing treatment. As a device for processing this metal part, a processing device 50 shown in FIG. 4 is generally used. This processing apparatus 50 has a processing container 51 whose one end is open, the inner surface of which has a polygonal cross section. The processing container 51 is supported by a rotatable arm 52 and is connected to a rotary drive source 53. It is configured to be rotatable. When processing the metal parts in the processing device 50, the metal parts and the desired processing liquid are put into the processing container 51, and the rotary drive source 53 is driven in a state where the opening end of the processing container 51 is directed obliquely upward. Then, the processing container is rotated, and when the processing is completed, the arm 52 is rotated to direct the open end of the processing container 51 obliquely downward to take out the internal metal parts and the processing liquid.

[0003]

However, in the above processing apparatus, the metal parts and the processing liquid are introduced into the processing container for each processing operation, and the processing container is rotated to process the metal parts. Since the metal parts and the treatment liquid have to be taken out, the treatment liquid is often discarded as it is even though the treatment capacity remains, which causes a problem such as extremely low economic efficiency. Along with
Even if the processing liquid once taken out is reused, the processing capacity of the processing liquid is lowered, so that there are variations in the processing of the metal parts, which causes problems such as deterioration of product quality. Regarding this problem, it is possible to use a purification system that circulates and purifies the treatment liquid.
In general, many septic tanks are connected with complicated septic tanks by complicated piping processing, which not only forces expansion of the scale of the processing equipment, but also makes it extremely difficult to perform maintenance such as piping maintenance. The problem is occurring.

The present invention has been made in view of the above problems, and provides a treatment liquid storage tank capable of maintaining the treatment ability of a treatment liquid with an extremely simple structure and eliminating variations in the treatment of metal parts. With the goal.

[0005]

In order to achieve the above object, the treatment liquid storage tank of the present invention comprises a working tank for storing various processing liquids and an auxiliary tank for storing the processing liquid overflowing from the working tank. A plurality of treatment tanks each including a work tank and an auxiliary tank are connected to each other by a circulation path. Moreover, a processing liquid flow means for allowing the processing liquid to flow between the auxiliary tanks is provided, and a processing liquid supply device for constantly supplying a new processing liquid to the working tank corresponding to the auxiliary tank located on the most upstream side is provided. It is provided. The processing liquid flow means is configured by providing auxiliary tanks connected to each other, and sequentially lowering wall surfaces which are boundaries of the connected auxiliary tanks in a stepwise manner.

[0006]

In each processing tank, the working tank is filled with the processing liquid, and the working tank located at the most upstream side is supplied with new processing liquid from the processing liquid supply device. The treatment liquid is circulated and supplied to the working tank through the circulation path. As a result, the processing liquid in the working tank overflows into the auxiliary tank, and the processing liquid circulates between the auxiliary tank and the working tank. Further, the flow of the processing liquid is generated between the auxiliary tanks by the processing liquid flow means, and a flow of the processing liquid containing a new processing liquid is generated between the plurality of processing tanks.
The processing capacity of the processing liquid can be constantly kept constant in the entire processing liquid storage tank.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is an apparatus for performing various kinds of processing on metal parts, for example, a cyclic drive mechanism provided with an endless chain that is cyclically driven by the drive of a motor, and holds a plurality of processing containers in which the metal parts are loaded and holds them intermittently. Metal that is configured to automatically perform a stepwise treatment or a different treatment on a metal part by circulating the treatment container and immersing the treatment container in the treatment liquid in the storage tank provided at the intermittent stop position. The present invention relates to a treatment liquid storage tank for storing various treatment liquids for treating metal components in a component treatment device (not shown), and one embodiment thereof will be described below with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes a treatment liquid storage tank, for example, a compound liquid for polishing metal parts, an alkali cleaning liquid for cleaning metal parts, a plating treatment liquid for plating metal parts, etc. It is configured by connecting and disposing three processing tanks A, B, and C in which the processing liquid is stored. Each of the processing tanks A, B, and C has a rectangular parallelepiped shape with an open upper surface, and is configured to share the side wall 2 with each other in contact with each other, and stores the same processing liquid. Further, a partition wall 3 which is lower than the height of the side wall 2 is provided in the vicinity of the rear portion of each processing tank, and each processing tank A,
B and C are working tanks 4A, 4B and 4C and auxiliary tanks 5A and 5B,
It is divided into 5C. The work tanks 4A, 4B, and 4C have a volume sufficient to accommodate the processing container 6 in which a large number of metal parts are charged and held, while the auxiliary tanks 5A, 5B, and 5C have auxiliary amounts of processing on the rear end side. It has a volume for storing liquid.
In addition, the working tanks 4A, 4B, 4C and the auxiliary tanks 5A, 5B, 5
C is connected to each of the processing tanks A, B, and C by a circulation path 7, and a pump 8 is provided in the circulation path 7 so that the processing liquids of the auxiliary tanks 5A, 5B, and 5C correspond to the work. Tank 4
It is configured to circulate in A, 4B, and 4C, respectively.

Auxiliary tank 5 in each of the processing tanks A, B and C
A, 5B, and 5C have the same bottom surface, and auxiliary tank 5A, auxiliary tank 5B,
The auxiliary tanks 5C are set so that the depth gradually increases in order. That is, of the side walls 2 separating the processing baths A, B, and C, the height of the rear part of the processing bath C that is not in contact with others is the lowest, with respect to the height of the side wall 2 behind the partition wall 3.
It is configured such that the side wall in the processing tank A, which does not come in contact with others, becomes the same as the side wall height of the working tank 4A, as the height gradually increases stepwise toward the side. The side walls 2 in these auxiliary tanks 5A, 5B, and 5C are all set lower than the height of the partition walls 3 except the side wall 2 in the processing tank A which is not in contact with others, and the processing liquids between the auxiliary tanks are adjacent to each other. It is configured so that it can be distributed to the tank. The step-shaped side wall 2 constitutes a processing liquid flow means that allows the processing liquid to flow between the auxiliary tanks 5A, 5B, and 5C. Also, work tank 4
All of A, 4B, and 4C have the same shape and volume, but the tip of the processing liquid supply pipe 9 extending from a processing liquid supply device (not shown) is located above the working tank 4A.
It is configured to constantly supply a new processing liquid to the working tank 4A.

Next, the operation of the treatment liquid storage tank 1 having the above structure will be described along with the flow of the treatment liquid. Now, the working tanks 4A, 4B, 4C and the auxiliary tanks 5A, 5 of the respective processing tanks A, B, C
B and 5C are filled with the treatment liquid, and the treatment liquids of the auxiliary baths 5A, 5B and 5C are driven by the pump 8 for the respective treatment baths A, B and C as shown by the solid thin arrows in FIG. Depending on the working tanks 4A, 4A that are always supported by the circulating path 7,
B, 4C, and the processing liquid in the working tanks 4A, 4B, 4C, which is the processing liquid supplied from the circulation path 7, overflows from the partition wall 3 and flows into the corresponding auxiliary tanks 5A, 5B, 5C. And

At this time, as indicated by the solid line arrow in FIG. 1, the supply amount from the circulation path 7 is supplied from the processing liquid supply device (not shown) or the like to the working tank 4A of the processing tank A through the processing liquid supply pipe 9. An excess amount of fresh treatment liquid is continuously supplied. At this time, the processing liquid in the working tank 4A is in a state in which the conventional processing liquid and the new processing liquid are mixed. As a result of the supply of the new processing liquid, the amount of the processing liquid overflowing from the partition wall 3 and flowing into the auxiliary tank 5A becomes larger than the amount of the processing liquid sucked from the auxiliary tank 5A to the circulation path 21, and new from the auxiliary tank 5A. A treatment liquid having the same volume as the supply amount of the treatment liquid overflows into the adjacent auxiliary tank 5B. A phenomenon similar to that of the treatment tank A occurs in the treatment tank B due to the inflow of the treatment liquid, so that the treatment liquid in the auxiliary tank 5B becomes
The processing liquid overflowing to C and finally overflowing from the auxiliary tank 5C is sent to a processing liquid recovery device (not shown) or the like for disposal or purification treatment.

As a result, a unidirectional flow of the processing liquid occurs between the processing tanks A, B, and C, and each working tank 4
The processing ability of the processing liquid in A, 4B, and 4C can be always kept constant. In addition, the treatment liquid has a higher content rate of a new treatment liquid on the treatment tank A side, and, for example, when the same treatment is performed in a plurality of stages such as the first step, the second step, the third step, ... , The processing container 6 holding the metal parts,
By moving in accordance with the double-dotted chain line arrow in FIG. 1, it is possible to perform fine processing of metal parts. Further, by using the treatment liquid storage tank 1 for a treatment device for metal parts, it is not necessary to provide a treatment liquid circulation system for circulating and purifying the treatment liquid in the treatment liquid storage tank 1, for example, and a treatment device for metal components. Can be extremely miniaturized.

In the treatment liquid storage tank 1 shown in the present embodiment, the order of the depths of the auxiliary tanks 5A, 5B and 5C whose depths change step by step is merely an example. For example, the auxiliary tank 5B is deepest. Auxiliary tanks 5A, 5B, 5A, 5B,
The effect can be obtained if the depth of any one of C is set to the deepest and the depth becomes gradually shallower as it goes away from the deepest auxiliary tank, and the number of processing tanks can be increased or decreased according to the number of times of processing. To be done. In addition, if an impurity recovery device such as a floating oil recovery device (not shown) or a sludge recovery device (not shown) is installed at the auxiliary tank position, the processing liquid can be purified to some extent in the auxiliary tank and can be used efficiently. Is.

[0014]

As described above in detail, the processing liquid storage tank in the processing apparatus for metal parts of the present invention includes a working tank for storing various processing liquids and an auxiliary for storing the processing liquid overflowing from the working tank. A plurality of processing tanks each including a tank are provided, and a circulation path that connects the working tank and the auxiliary tank is arranged for each processing tank, and a processing liquid flow means that allows the processing liquid to flow between the auxiliary tanks. Since it is provided with a processing liquid supply device that constantly supplies a new processing liquid to the working tank corresponding to the auxiliary tank located on the most upstream side, it has a very simple structure and is always contained in the processing liquid in each processing tank. A certain amount of new treatment liquid can be kept mixed, the treatment capacity of the treatment liquid can be kept constant at all times, and it is possible to improve the efficiency of use of the treatment liquid and improve economic efficiency. There is. Also,
By limiting the flow rate of the treatment liquid to one direction, the treatment liquid flow means is configured such that the wall surfaces that are the boundaries of the auxiliary tanks connected to each other are sequentially lowered in a stepwise manner, and the treatment liquid is treated toward the upstream side. There is an advantage that the ability can be enhanced and stable processing of metal parts can be performed.

[Brief description of drawings]

FIG. 1 is a plan view of a processing liquid storage tank according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line KK of FIG.

FIG. 3 is a sectional view taken along line LL in FIG.

FIG. 4 is an explanatory diagram of a conventional processing device.

[Explanation of symbols]

 1 processing liquid storage tank 2 side wall 3 partition walls 4A, 4B, 4C auxiliary tank 5A, 5B, 5C working tank 6 processing container 7 circulation path 8 pump 9 processing liquid supply pipe A, B, C processing tank

Claims (2)

[Claims] 1. A plurality of processing tanks each including a working tank for storing various processing liquids and an auxiliary tank for storing the processing liquid overflowing from the working tanks, each working tank and an auxiliary tank being provided. In addition to arranging a circulation path that connects the processing tanks with each other, a processing solution flow means that allows the processing solution to flow between the auxiliary tanks is provided, and a new processing solution is constantly supplied to the working tank corresponding to the auxiliary tank located on the most upstream side. A treatment liquid storage tank, which is provided with a treatment liquid supply device. 2. The processing liquid flow means according to claim 1, wherein the auxiliary liquid tanks are connected to each other, and the wall surfaces of the connected auxiliary liquid tanks, which are boundaries with each other, are sequentially lowered in a stepwise manner. Liquid storage tank.