JP2010167355A - Rotary feeder of coating which is used for automatic continuous coating - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such problems that since the whole of a continuous conveyer used for both of a pretreatment process and a post treatment process such as drying in a coating line is passed through severe high temperature zone or a zone where coating material mist is deposited, there are defects of causing dirt or damaging mechanical durability, and when the coating is carried out while being divided into processes, productivity is lowered due to reloading, etc. of a material to be coated. <P>SOLUTION: In the coating line 1, 2 including the coating pretreatment process and the coating post treatment process, a transporting conveyer for the pretreatment zone and that for the post treatment zone are separated from each other, and the rotary feeder 4 for the coating which is arranged in the middle between both conveyers is provided with: a holder 10 for the material to be coated in a Y-shape on three directions of the circumference, each holder being arranged in an equally divided position on the circumference of the rotary feeder and sequentially being rotated and moved; and a drive unit for stopping the respective holders at a preliminarily set loading position, a coating position and a unloading position. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention relates to equipment technology for dividing a line for automatically and continuously coating an object by a process, and maintaining each line without being adversely affected by other lines and maintaining productivity.

A coating line is provided when a large amount of an object to be coated is applied continuously. In general, these coating lines are configured so that a pretreatment process such as dust removal and washing of an object to be coated and a posttreatment process represented by drying after painting flow continuously in the same line.

The object to be coated, which has been placed on the line conveyor and sent to the coating area, is painted by spray coating. At this time, the sprayed paint particles also adhere to the conveyor and become dirty in the next process. Will be carried.

In the high-temperature drying process, the conveyor itself is also placed in a high-temperature environment. Therefore, the use conditions are severer than those used at room temperature, and the maintenance frequency and level must be increased. Still, under these conditions, durability is reduced and early replacement is required.
If other areas such as the painting process are configured with the same continuous conveyor, the environment will be used repeatedly at high temperatures and at normal temperatures. A big influence.

Conveyors used under these conditions are subject to maintenance on all continuous conveyors, and are not inherently fouling areas. As a result, even parts that do not need to be replaced because they are not used in the system are subject to replacement.

As a means for solving these problems, it is conceivable that the continuous conveyor is divided into a pre-processing step, a painting step, a post-processing step, etc., and examples separated from the constraints on the layout are also known. . In this case, the biggest new problem is synchronization of transfer and transfer of objects to be coated between conveyors in each process.

Reloading is performed by a human or automatically by a manipulator such as a transfer robot, but when a large number of objects to be coated are placed on a continuous conveyor in the coating area and are coated while being transferred continuously, It is uneconomical to install equipment that is divided and replaced, and to synchronize it. In the past, the object to be coated taken out from the pretreatment process line in the painting area is painted by the reciprocating conveyance device. , And when the coating is completed, it is sent back and placed on the conveyor line in the next post-processing step. (For example, see Patent Document 1 and Patent Document 2)

Japanese Utility Model Publication No. 61-15974 JP-A-2-83056

In such a case, in order to send the object to be coated to the painting position, the time for placing it on the conveyor and moving it to the painting position, and the time for moving after painting and removing it from the conveyor and placing it on the conveyor of the next process is one object. It will take the painting cycle for the painting. Therefore, this time becomes a waiting time on the coating cycle, and the coating speed is lowered, resulting in a problem that the productivity is remarkably lowered. Also, in a painting line that performs a large amount of painting processing in a short painting cycle, it will arrive after unloading, so it takes time to attach and detach, and it is particularly difficult to automate using a transfer robot. there were.

The present invention impairs the original equipment and its component life, properly maintains a conveyor line that does not need to be replaced, minimizes the portion that is soiled in the coating area, and causes unnecessary soiling and soiling. The conveyor line is divided so that substances are not brought into other processes, and painting and re-loading are performed in a short coating cycle, so that even if a large amount of coating processing is performed continuously, painting can be performed without reducing productivity. Provide a transport device for painting.

The present invention, in addition to the coating process, in the coating line including the pre-painting process and the post-coating process, separating the conveyor for the pre-treatment area and the post-treatment area, in the rotary feeder for painting disposed between the two conveyors, The rotary feeder is provided with Y-shaped object holders in three directions on the circumference, and each holder is arranged at a position equally divided on the circumference of the rotary feeder, and sequentially rotates and is preset. A driving device that stops at the arrival position, the painting position, and the unloading position is provided.

According to the above configuration of the present invention, the painting area is independent of the pre-painting treatment line, the setting after painting, and the drying treatment line by a single conveying device, so that the conveying device of these lines passes through the painting area. Therefore, it is not sent to another line due to adhesion of spray paint mist by painting.

Conveyors that are driven and operated under high-temperature conditions in the drying zone have a significant decrease in durability due to heat, but it is only necessary to perform necessary maintenance and replacement of parts within the range of this line. There is no deterioration in the durability. Therefore, these maintenance and equipment management costs can be kept to a minimum range.

In addition, the rotary feeder that transports the object to be painted to the painting position has three object holders that can rotate to send the object to the painting position sequentially from the loading position to the painting position and the unloading position. In addition, it is possible to unload the object to be unloaded at the unloading position during painting at the painting position and transfer it to the conveyor line for the next drying process or place a new object to be loaded at the loading position. Thus, the waiting time for painting by attaching and detaching is eliminated, and the productivity is not lowered.

As described above, according to the present invention, it is possible to reduce conveyor maintenance and equipment management costs in an automatic coating line, and to prevent impurities such as paint mist generated in the coating region and fouling substances resulting from paint adhesion and the resulting dust. Thus, it is possible to construct a continuous coating line for an object to be coated with a short cycle time without bringing it into another region.

The schematic diagram as an apparatus for implementing this invention. The top view which shows one Example of the rotation feeder of FIG. The side view which shows one Example of the rotation feeder of FIG.

A schematic diagram of an apparatus for carrying out the present invention is shown in FIG. The specific device adopts the structure as a conveyor device from many examples already used for general purposes, and the details can be omitted because it can be selected by design within the range described below. .

In order to calm the coating surface of the painted object, the pre-processing line that degreases, cleans, and cleans the object to be coated as a pre-processing device, the coating line that performs the coating process, and the coating surface of the object to be painted, There is a drying line for setting and drying. In the case of the present invention, the pretreatment line 1 and the drying line 2 independently form a conveyor line, and the coating line is installed between the two lines as a coating region.

In the painting area, an automatic painting machine 3 and a rotary feeder 4 are installed as a conveying device for installing an object to be painted at the painting position. A painting chamber is provided to surround the painting area or painting position to collect spray paint mist by painting and to prevent scattering to the outside, but is omitted here. As the automatic coating machine 3, a highly versatile coating robot is often employed, but the present invention is not necessarily limited thereto.

The rotary feeder 4 is a conveyance device that is provided with a workpiece holder 10 that is equally divided in three directions on the circumference and is controlled to rotate, one of which corresponds to the spray operation range of the automatic coating machine 3. It becomes the painting position F. The position of the object holder 10 that is in front of the rotation direction of the coating position F is the arrival position A, and the position of the object holder 10 that is installed on the pretreatment line 1 side and that is the rotational movement destination is It becomes the unloading position B and is installed on the drying line 2 side.

The objects to be coated sequentially sent by the pretreatment line 1 are transferred to the holder at the arrival position A of the rotary feeder 4 by human power or the transfer robot 5 and are transported to the painting position F to be painted. Therefore, the rotary feeder 4 is configured to be controlled so that the rotational movement and stop are intermittently repeated. Usually, it is synchronized with the painting, and the operation is controlled by a command signal from the control device of the painting robot.

Similarly, the object to be painted is sent to the unloading position B, where it is transferred to the conveyor of the next drying line 2. These loading and unloading can be carried out during painting while the rotary feeder 4 is stopped, and the object to be painted can be successively brought to the painting position, and painting is continuous except during the rotational movement. It is possible to eliminate loss time and maintain a high productivity state.

In addition, it is necessary to synchronize the both conveyor lines and the rotary feeder to ensure the transfer. In particular, the automatic transfer by the transfer robot 5 or the like is important. The workpiece holder is stopped at the loading position and the unloading position during the painting stop time, and can be replaced during that time. For example, the replacement is executed in accordance with the operation timing of the pretreatment line 1. Is possible.

DESCRIPTION OF SYMBOLS 1 Pretreatment line 2 Drying line 3 Automatic coating machine 4 Rotary feeder 5 Transfer robot 10 Object holder

Claims (1)

In a rotary feeder for painting, which is arranged in the middle of both conveyors in a continuous automatic painting line including pre-painting treatment and post-painting treatment, the conveyors in the pre-treatment region and the post-treatment region are separated. There are Y-shaped workpiece holders on the top three sides. Each holder is placed on the circumference of the rotary feeder and is moved by the rotation of the rotary feeder. A rotary feeder for automatic continuous coating comprising a driving device that stops at a position and an unloading position, moves intermittently, and is sequentially changed.

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