JPS6238273A - Method for washing painting jig - Google Patents

Abstract

PURPOSE:To facilitate the release of adhered paint and to prevent the deformation and damage of a painting jig, as a method for washing the painting jig made of iron, by applying heat-treatment to the painting jig before spraying a washing solution thereto. CONSTITUTION:A painting jig A made of iron such as a conveying truck, a suspending hook or a drainboard to which paint was adhered is introduced into a heating chamber 2 by a conveyer and heated to about 200-400 deg.C by supplying hot water from a nozzle 6 while passed through the heating chamber to reduce the bonding strength of the adhered paint. A nozzle 13 for spraying high pressure water supplied from a high pressure pump 12 to the painting jig A passed is mounted to the washing chamber 3 of the next stage and the adhered paint, of which the bonding strength is reduced by heating, can be released and removed by spraying high pressure water.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for cleaning painting tools for peeling off and removing paint adhering to iron painting tools used in painting work areas.

[Conventional technology]

Conventionally, when cleaning iron painting tools used in the painting work area (for example, trolleys and hanging hooks for transporting objects to be painted, or drainboards forming the floor of the painting work area, etc.), it is necessary to clean the painting tools. Adhering paint was peeled off and removed by simply spraying high-pressure water or the like.

Another method for removing the adhered paint is to simply incinerate the adhered paint.

(No references can be provided.) [Problem to be solved by the invention] However, in the case of general paints such as melamine paints and acrylic paints, the adhering paints can be sufficiently peeled off and removed by high-pressure water spraying alone. In the case of recent high-performance paints, such as two-component paints such as urethane-based and epoxy-based paints, the adhesion force is extremely high, so there is a problem that simply spraying high-pressure water is not sufficient to remove the adhering paint. there were.

On the other hand, in the method of incinerating the adhered paint, the iron painting tools are permanently deformed due to the high temperature heating (for example, about 700 degrees Celsius) for incineration, and the painting tools need to be shaped before being reused. There was a problem.

The purpose of the present invention is to improve the peeling negative performance of adhering paint, and
The purpose is to avoid deformation and damage to painting tools.

[Means for solving problems]

The characteristic means of the method for cleaning painting tools according to the present invention is that the iron painting tools are heated, and then a cleaning liquid is sprayed onto the painting tools to peel off and remove the adhering paint.The functions and effects thereof are as follows. .

[For production]

In other words, even with high-performance paints such as two-component paints such as urethane-based and epoxy-based paints, the adhesion force can be reduced by heat treatment (due to deterioration or alteration of the paint due to heating). Since the cleaning liquid is sprayed in a reduced state, adhering paint can be peeled off and removed extremely effectively and efficiently.

Moreover, in the heating process, it is only necessary to reduce the adhesion of the paint, so there is no need to raise the heating temperature to a temperature (over 700°C) that would permanently deform the iron painting tool, and it is not necessary to increase the heating temperature (up to about 500°C). (sufficient.) Thereby, deformation damage to iron painting tools due to heating can be avoided.

〔Effect of the invention〕

As a result of the above, it is possible to perform good cleaning regardless of the type of paint, and there is no deformation damage due to heating, so that the painting tools can be reused extremely smoothly and favorably.

Furthermore, cleaning efficiency can be greatly improved, and labor savings can be achieved.

〔Example〕

Next, examples of the method of the present invention will be described.

The drawings show the steel painting tools used in the spray painting work area, such as the iron trolley used to carry objects to be coated into and out of the paint booth that forms the spray painting work area, and the iron drainboards that form the work floor in the painting booth. (A) shows a device for cleaning iron painting tools (A) with paint adhered to them, which are conveyed by conveyor to the entrance-side silencing room (1), the heating room (2), the washing room (3), and the draining room (4). , and the exit-side silencing chamber (5) in this order.

In the heating chamber (2), hot air supply nozzles (6) are arranged in parallel in the direction of conveyance of the painting tool, and hot air is supplied from these nozzles (6) to cause the painting tool (A) to pass through the room.
It is heated to about 0°C to 400°C, and the adhesive force of the adhering paint is reduced by the heating.

In the figure, (7) is an exhaust port installed in parallel in the direction of conveyance of painting tools; (8)
) is a fan that exhausts a portion of the indoor hot air to the outside of the system, and (9) is a combustion type hot air generator (10) that uses hot air from the exhaust port (7).
The duct (11) returns the high-temperature combustion gas generated by the hot air generator (10) to the nozzle (6) as heating hot air.
) is a fan that supplies pressure to the

The cleaning chamber (3) has a nozzle (
13) is equipped, and the adhering paint whose adhesion has been reduced by passing through the heating chamber (2) is peeled off and removed by high-pressure water spraying.

In the figure, (14) is a motor that rotates the pair of nozzles (13). (15) is a drain pan that receives and stops cleaning water and peeling paint; (16) is a nozzle that supplies water to prevent paint slag from re-deposition to the drain pan (15); (17)
) is a filter device that separates and removes paint slag from the paint slag-containing water collected by the drain pan (15), and the water after passing through the filter device (17) is sent to each of the water jet nozzles (13) and (16). is supplied in circulation.

The draining chamber (4) is equipped with a nozzle (18) that blows high-speed air at the painting tool (A) after high-pressure water washing, and the painting tool (A) is drained by the high-speed wind blowing. . In the figure, (19) is a fan that supplies draining air to the draining nozzle (18).

[Another example]

Next, another embodiment of the present invention will be described.

The heating temperature may be appropriately set depending on the type of paint as long as it is a temperature that does not cause permanent deformation of the iron painting tool (A).

In addition to water, you can also use cleaning liquid to spray on painting tools (^).
Various liquid agents can be applied.

Specific heating configurations include heating the painting tool (A) by placing the iron painting tool (A) in a hot air heating furnace for a predetermined period of time, or heating the painting tool (A) with thermal radiation from an infrared heater. can be changed in various ways.

Furthermore, the specific configuration for spraying the cleaning liquid onto the heated coating tool (8) can be modified in various ways.

The present invention can be applied to various iron tools used in painting work areas, such as trolleys and hanging hooks for transporting objects to be painted, and various components of painting booths.

[Brief explanation of the drawing]

The drawing is a schematic diagram of an example of an apparatus used in the method of the present invention.

Claims (1)

[Claims] A painting tool cleaning method for peeling off and removing paint adhering to an iron painting tool (A) used in a painting work area, the method comprising heating the painting tool (A) and then spraying a cleaning liquid onto the painting tool (A). A method of cleaning painting tools that removes and removes adhering paint.