JP2003001180A - Paint film removing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for easily and definitely removing an old paint film or coat before working of repair painting on steel structures or the like. SOLUTION: A mobile carriage 10 movable along the surface of a steel structure 50 is provided with a high-frequency heating coil 5 as heating means. Removing means comprising an air motor 18 and a grinding brush 7 driven by the motor 18 is provided in the rearward of the coil 5 in the carriage 10. There is provided a recovery bag 35 where a bag 37 is detachably attached to a recovery inlet 36 energized on the surface of the structure 50 by a spring 39 in the rearward of the brush 7 in the carriage 10. A paint film softened by heating is exfoliated by the brush 7 and is recovered by allowing it to naturally drop into a recovery bag 35, by allowing the carriage 10 to move while applying a current to the coil 5 to heat the surface of the structure 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing a coating film applied to a steel structure or the like.

[0002]

2. Description of the Related Art For example, a coating film applied to the surface of a steel structure such as a chimney deteriorates during long-term use and causes peeling or cracking. Therefore, in the repair coating, the old coating layer is removed and the base treatment is performed. Conventionally, as a method for removing a coating film or a coating film on the surface of a steel structure, a sand blast treatment method in which an abrasive such as sand (sand) or shot (steel slab) is sprayed is generally performed. As an alternative method, an ice blast treatment method has recently been developed in which dry ice particles are sprayed onto a target surface at high speed through compressed air to clean the coating or peel the coating.

[0003]

However, the sandblasting method in which the abrasive is sprayed causes the sprayed abrasive to scatter around and causes a deterioration of the working environment, and is often used as a measure for preventing scattering of the abrasive and for collecting it. There was a problem that time and cost were spent. Further, the ice blasting method has the merit that since the dry ice particles as the jetting material sublime after being used, the environment is not deteriorated even if it scatters in the surroundings, and the post-treatment is not necessary, but On the other hand, since the hardness of dry ice particles is low, there is a drawback that the processing capacity is remarkably low as compared with the sandblasting method. Moreover, when the coating film layer is peeled off, a large amount of coating film dust is generated, so that there is a problem that a large-scale recovery device is required to perform the above work.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an apparatus for removing a paint coating film that removes an old paint coating film or a coating film before the repair painting of a steel structure or the like. There is.

[0005]

In order to achieve the above object, the apparatus for removing a coating film according to claim 1 comprises a heating means for previously heating a coating film layer applied to a structure. A peeling means for peeling off the coating layer heated by the heating means is mounted on a carriage that is movably supported along the painted surface of the structure, and the carriage is moved upward along the painted surface of the structure. A device for removing a coating film that removes the coating layer while moving, wherein the dolly has coating scraps peeled off by the peeling means on the rear side in the moving direction of the dolly with respect to the peeling means. It is characterized by the provision of a collection bag for collection.

That is, since the coating layer applied to the surface of the structure is preheated by the heating means to be softened, the coating layer is scraped off by the peeling means. The membrane layer can be removed very easily and satisfactorily. Moreover, since a collection bag for collecting the peeled coating film scraps is provided on the rear side of the peeling means in the moving direction of the truck, the coating film layer is moved while moving the truck upward along the coating surface of the structure. At the time of peeling, the peeled coating film scraps can be collected into the collection bag by spontaneous fall without adding a separate collection device, and the device can be made more compact, and the work Further labor saving can be achieved.

According to a second aspect of the present invention, there is provided a coating film removing apparatus according to the first aspect, wherein the recovery bag supports the cart on the coated surface of the structure. It is characterized in that it is composed of a recovery port that is urged by the urging means against the coating surface of the structure, and a bag body provided on the rear end side of the recovery port.

In this way, the recovery port is
Since it is always urged and pressed against the structure, it is possible to surely prevent the coating film scraps from dropping between the surface of the structure and the recovery port, and to reliably collect the peeled coating film scraps. be able to.

According to a third aspect of the present invention, there is provided a coating film removing apparatus according to the second aspect, wherein the bag is detachably attached to the recovery port. .

That is, since the bag is detachably attached to the recovery port and each bag can be sent to the ground and processed by various separate methods, the effect of efficiently recovering coating film scraps can be obtained. .

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An apparatus for removing a coating film according to the present invention will be described with reference to the drawings. As shown in FIG. 1, in the present embodiment, the steel structure 50 to be removed is targeted.
The coating layer 51 applied to the surface of the above is preheated to be softened, and then the softening coating layer 51a is removed by using a scraper composed of the polishing brush 7.

This coating film removing apparatus 1 is connected to a high frequency power source 4 via a cable 4a, and is provided with a high frequency heating coil movably installed along the coating surface of a steel structure 50 for removing treatment. 5, a high-frequency generator 2 provided with the high-frequency heating coil 5, a removal device 3 provided with a polishing brush 7 and a polishing-brush drive device 6 movably installed in the vicinity of the high-frequency heating coil 5 and behind it, and the removed coating film Collection bag 3 for collecting waste
5, the high-frequency heating coil 5 and the polishing brush 7 are simultaneously moved, and the softened coating layer 5 is softened by heating.
1a is sequentially removed by the polishing brush 7, and the removed coating film scraps are collected through the collecting bag 35.

FIG. 2 and FIG. 3 show the structure of the coating film removing apparatus 1 according to the present invention. As shown in the figure, the coating film removing apparatus 1 of this embodiment is provided with a high-frequency heating coil 5 as a heating means.
And a high-frequency generator 2 connected to a high-frequency power source 4 (not shown), and a peeling means. The polishing brush 7 and the removing device 3 including the air motor 18 as a drive device for the polishing brush are installed on the moving carriage 10 and integrated with each other, and the removing work can be performed while moving the moving carriage 10. it can.

The polishing brush 7 is installed at the tip of the rotary shaft 16 which is rotated by the air motor 18, and is adapted to remove the softened coating layer 51a through the rotating operation. The movable carriage 10 includes a plurality of wheels 11 and handles 13a and 13b.
Is provided, and the painted surface can be arbitrarily moved and moved manually by these handles 13a and 13b, and the removal target position can be moved or carried.

Further, a plurality of magnets 12 are installed under the four corners of the moving carriage 10, and a predetermined attracting force is generated between the moving carriage 10 and the surface to be removed, so that stable moving operation and removing work can be performed. It is considered to be possible. Further, a hood 19 is attached to the lower part of the moving carriage 10 around the polishing brush 7 to prevent scattering of coating film dust, and a collecting bag 35 is provided on the rear side of the hood 19 to prevent the hood 19 from being scattered. 1
The coating film scraps in 9 are collected in the collecting bag 35.

The recovery bag 35 has a recovery port 36 that gradually narrows toward the rear side of the removing device 1, and a bag body 37 is attached to and detached from the rear end side of the recovery port 36. ing. In the recovery bag 35, the recovery port 36 is attached to the removal device 1 by the support rod 38 which is expandable and contractible.
It is supported so that it can be moved closer to and away from 0, and the recovery port 36 is always urged to the steel structure 50 side by a spring (biasing means) 39 provided between the removing device 1 and the recovery port 36. It is becoming popular. It should be noted that another drive device such as an electric motor may be used instead of the air motor 18 of this example.

Next, the operation and effect of the removing apparatus 1 according to this example will be described. While the operator uses the handles 13a and 13b to move the moving carriage 10 installed on the surface to be removed at a predetermined speed, the high-frequency power supply 4 causes the high-frequency heating coil 5 to move along the coating layer 51. When an electric current is supplied, the surface layer of the steel structure 50 is heated by the high frequency heating coil 5, and the coating layer 51 is softened by receiving the heat.

On the other hand, when high pressure air is supplied from the air hose 18a and the air motor 18 is driven, the polishing brush 7 is rotated via the rotary shaft 16, whereby the softened softened coating layer 51a is removed and removed. Coating film waste is hood 1
Sequentially falling from 9 into the recovery bag 35 is spontaneously dropped and recovered.

FIG. 4 shows an example of use of the present invention.
As shown in FIG.
This is an example in which it is installed on a gondola 25 suspended by an elevating wire 26 and used on a vertically painted surface. The coating film removing apparatus 1 is equipped with a gondola 25 via a rope 27.
The weight of the gondola 25 is supported on the gondola 25, and the high frequency power source 4 and the compressor 30 to which the air hose 18a is connected are installed on the gondola 25.
5. The apparatus can be operated from above on the above procedure to perform the work of removing the vertically painted surface.

FIGS. 5 and 6 show an example of use for a steel structure 50 having a welded portion 50a on the coated surface, such as a chimney barrel, in which the operator follows the same procedure as above. The work of removing the coating film is performed on the entire coated surface. In this case, since the polishing brush 7 is used in this example, not only the ordinary flat coated surface but also the coated surface having irregularities around the welded portion 50a is used. On the other hand, normal removal can be performed to obtain a good quality treated surface.

As described above, according to the coating film removing apparatus 1 of this embodiment, the high frequency generating apparatus 2 and the removing apparatus 3 are the moving carriage 1.
0 is integrated and installed, and the coating layer 51 can be removed while moving the moving carriage 10, so that the device configuration is simplified and downsized, and the work efficiency is improved. The equipment can be easily moved and transported manually, and the total work time including preparatory work can be shortened. At this time, the coating film scraps removed by the polishing brush 7 are naturally dropped into the collection bag 35 and collected, and each bag is sent to the ground by various separate methods and can be processed. There is an effect that collection becomes efficient.

That is, the moving carriage 10 is more than the polishing brush 7.
Since a collecting bag 35 for collecting the peeled coating film scraps is provided on the rear side in the moving direction of, the coating layer 51 is moved while moving the moving carriage 10 upward along the coating surface of the steel structure 50.
When peeling off, the peeled coating film scraps can be collected into the collection bag 35 by spontaneous fall without adding a separate collecting device, and the device can be further downsized. Further labor saving can be achieved.

Furthermore, since the recovery port 36 is constantly urged and pressed against the steel structure 50 by the urging means composed of the spring 39, the surface of the steel structure 50 and the recovery port 36.
It is possible to surely eliminate the fall of coating film scraps between
The peeled coating film waste can be reliably collected. Moreover, since the bag 37 can be attached to and detached from the recovery port 36 and each bag can be sent to the ground and processed by various separate methods, there is an effect that the coating film waste can be efficiently recovered.

Further, the magnet 12 installed on the moving carriage 10 enables stable movement and work, the hood 19 prevents scattering of coating film scraps during the removal work, and the collected coating film scraps are collected in a collecting bag. Since it is sequentially collected by 35, a clean working environment can be obtained.

Although the embodiment of the present invention has been described above, it is needless to say that the present invention is not limited to this and various modifications can be made based on the technical idea of the present invention.

[0026]

As described above, according to the apparatus for removing a coating film of the present invention, the following effects can be obtained. According to the apparatus for removing a coating film of claim 1, the coating film layer applied to the surface of the structure is preheated by the heating device to be softened, and the coating film layer is removed by the peeling device. Since it is scraped off, the coating layer of the structure can be removed very easily and satisfactorily. Moreover, since a collection bag for collecting the peeled coating film scraps is provided on the rear side of the peeling means in the moving direction of the truck, the coating film layer is moved while moving the truck upward along the coating surface of the structure. When peeling off, the peeled coating film scraps can be collected in the collection bag by spontaneous fall without adding a separate collecting device, and the device can be further downsized.
Further labor saving can be achieved.

According to the second aspect of the present invention, since the recovery port is constantly urged and pressed against the structure by the urging means, the recovery port is provided between the surface of the structure and the recovery port. It is possible to surely eliminate the fall of the coating film scraps from, and it is possible to reliably collect the peeled coating film scraps.

According to the coating film removing apparatus of the third aspect, since the bag body can be attached to and detached from the collection port and each bag can be sent to the ground by a variety of separate methods for processing, the coating can be applied. There is an effect that the collection of membrane waste becomes efficient.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a device for removing a coating film according to an embodiment of the present invention.

FIG. 2 is a side view of the apparatus for explaining the configuration and structure of the coating film removing apparatus according to the embodiment of the present invention.

FIG. 3 is a plan view of the apparatus for explaining the configuration and structure of the coating film removing apparatus according to the embodiment of the present invention.

FIG. 4 is a side view of a work place for explaining a method of removing a coating film by the coating film removing apparatus according to the embodiment of the present invention.

FIG. 5 is a side view of a chimney explaining a steel structure from which a coating film is removed by the coating film removing apparatus according to the embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view of a part of the steel structure from which the coating film is removed by the coating film removing apparatus according to the embodiment of the present invention.

[Explanation of symbols]

1 removal device 5 High frequency heating coil (heating means) 7 Polishing brush (peeling means) 10 Moving dolly (dolly) 35 collection bags 36 Collection port 37 bags 39 spring (biasing means) 50 Steel Structure (Structure) 51 coating layer

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shigeo Inoue             4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Prefecture               Mitsubishi Heavy Industries Ltd. Hiroshima Research Center F term (reference) 3B116 AA31 AB51 BA02 BA12 BB82                       CA03                 4F042 AA16 CC02 CC12 CC14 DA06                       DB21 DH07 DH08 ED09 ED13

Claims (3)

[Claims] 1. A heating means for heating a coating layer applied to a structure in advance and a peeling means for peeling the coating layer heated by the heating means are provided along the coated surface of the structure. A device for removing a coating film, which is mounted on a movably supported trolley and removes the coating film layer while moving the trolley upward along a coating surface of the structure, wherein the trolley includes: A device for removing a coating film, wherein a collecting bag for collecting the coating film scraps peeled by the peeling device is provided on the rear side of the peeling device in the moving direction of the carriage. 2. The recovery bag includes a recovery port for urging the trolley to the coating surface of the structure with the trolley supported on the coating surface of the structure, and a recovery port of the recovery port. 2. The apparatus for removing a coating film according to claim 1, wherein the apparatus comprises a bag provided on the rear end side. 3. The apparatus for removing a coating film according to claim 2, wherein the bag is detachably attached to the recovery port.