JPS6320320B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for simultaneously performing a wide variety of surface treatments on materials to be treated made of aluminum-based metals or other metals in a suspended state.

Conventional technology For example, long materials to be treated made of aluminum metal such as sash are hung vertically in rows and subjected to surface treatments such as degreasing, etching, desmatting, anodizing, electrolytic coloring, electrodeposition painting, and baking. The materials are sequentially transported to the department and subjected to necessary processing. Among these treatments, especially for electrical treatments such as anodic oxidation, electrolytic coloring, electrodeposition coating, etc., an appropriate number of electrode members are prepared, and each material to be treated is placed at a certain distance from the electrode member in the electrolyte in the treatment tank. Processing is performed by holding the materials separated and electrically biasing each material to be treated to serve as one electrode, and electrically biasing the electrode member to serve as the other electrode.

Recent trends in such treatments have focused on cosmetics, and moreover, a wide variety of treatments have come to be required. Therefore, it has become less desirable to carry out production in small lots. However, current processing apparatuses of this type are large in size and are designed to simultaneously process a large number of materials to be processed, so they are not suitable for production in small lots. One method for this purpose is to divide a part of the treatment tank into multiple parts depending on the type of treatment bath used in the same treatment process, as disclosed in Japanese Patent Application Laid-Open No. 58-42795. A technical concept has been proposed in which different types of processing liquids are filled in the tank, and each block of a large number of materials to be processed suspended on the same beam is simultaneously and separately charged into different processing tank parts for processing.

However, in this method, it is necessary to repair the processing tank in the existing processing equipment, which is very large-scale and requires a large investment in equipment, making it difficult to carry out at an early stage. Furthermore, since the number of idle facilities will increase, this is difficult to deal with as a practical problem.

Purpose of the Invention The present invention solves the above-mentioned drawbacks of the prior art. Especially in electrical processing, a large number of workpieces suspended on the same beam are handled as a plurality of block units, and the energization time and energization time for each block can be adjusted. The purpose of the present invention is to provide a metal surface treatment method that enables quantity control and thereby enables the simultaneous production of a wide variety of products in small quantities without dividing a treatment tank.

Structure of the Invention The metal processing method according to the present invention is a method for surface-treating a large number of materials to be treated in a variety of ways at the same time in a suspended state. The hanging beam is divided into two or more parts, each divided beam part is assembled in a state where they are electrically insulated from each other, and the plurality of materials to be treated are simultaneously immersed in one treatment tank containing the same treatment solution. The present invention is characterized in that separate power supplies are provided for each of the divided beam parts, and the duration and amount of current applied to the material to be processed by these power sources are independently controlled.

Embodiment The embodiment shown in FIG. 1 shows a structure in which a beam 1 for suspending a workpiece W is divided into two parts 1A and 1B. These parts 1A and 1B are electrically insulated from each other and are connected and fixed by a suitable connecting member 2. For example, as shown in FIG. 2, it is preferable to separate the parts 1A and 1B from each other and connect them by tightening bolts 3 and nuts 4 by means of a connecting member 2 which may be a suitable electrically insulating plate. Furthermore, a suitable electrically insulating plate may be interposed in the separated portion. The electrically insulating cylindrical member 5 is unnecessary if the electrically insulating plate of the connecting member 2 is completely insulated.

A power supply member 6 and a suspension member 7 that establishes electrical continuity with the power supply member 6 are independently fixed to each of these beam portions 1A and 1B, and the material to be processed W is normally attached to each suspension member 7. It is designed to be suspended and supported with an electrical connection. Each power supply member 6 is connected to one pole of each of independent power supplies E1 and E2, and the opposite pole of each power supply is connected to a required electrode member provided in the processing tank 10, although not shown. The power of electricity can be controlled independently of each other.

The workpiece W suspended on such a beam is
Here, they are put into a treatment tank 10 filled with the same treatment solution, and for example, anodization treatment is performed at the same time. Although not shown here, electrodes that serve as cathodes are placed (permanently installed) in the processing tank 10 in correspondence with the material to be treated W that is electrically biased to serve as anodes. It is. At this time, for the treated material W put into the same processing tank 10,
Power supply E for each beam section 1A, 1B
By individually controlling the energization time and the amount of energization from beam portions 1A and 1B, the degree of treatment can be varied for each block of the material to be treated W suspended by the beam portions 1A and 1B. That is, by controlling the time and amount of current applied to the block of material to be processed W suspended by each of the beam portions 1A and 1B, desired processing can be achieved.

Although a structure in which the beam 1 is divided into two parts is shown here, it is of course possible to divide the beam into a larger number of parts, thereby simultaneously accomplishing a wide variety of processes for each decimal number. It is also possible to divide the cathode in a similar manner. Furthermore, by combining a plurality of divided processing tanks as described above instead of using the same processing tank, even more varied processing can be achieved.

Effects of the Invention The present invention provides the following effects.

Different treatments, such as treatments with different film thicknesses, treatments with different shades of color, and the presence or absence of these treatments, can be simultaneously achieved even in the same treatment tank.

Therefore, high-mix, low-volume production can be easily achieved.

Renovation is easy and takes a short time, and its cost is low, and running costs are also low.

Suitable for labor saving and energy saving.

Productivity can be improved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a case in which the method of the present invention is carried out using an apparatus that divides the beam into two, which is one embodiment of the method. FIG. 2 is a perspective view showing the connecting portion of the beam. DESCRIPTION OF SYMBOLS 1... Beam, 1A, 1B... Beam part, 2... Connecting member, 3... Bolt, 4... Nut, 5... Cylindrical member,
6... Power supply member, 7... Hanging member, 10... Processing tank, E
1, E2...Power supply.

Claims (1)

[Claims] 1. In a method for simultaneously performing a wide variety of surface treatments on a large number of workpieces in a suspended state, a hanging beam for feeding power so that the large number of workpieces serve as one electrode is divided into two or more parts. The divided beam parts are assembled in a state where they are electrically insulated from each other, and the plurality of materials to be treated are simultaneously immersed in one processing tank containing the same processing solution, and each divided beam part is connected to a separate power supply. A method for surface treatment of metal, characterized in that the time and amount of current applied to the material to be treated by these power sources are independently controlled.