JPH10113600A - Putty shaping of distorted part of worked sheet metal facing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for simplifying the frequency of polishing without generating a large quantity of dust, facilitating a polishing operation with accuracy, saving on consumables, inhibiting the generation of pollutants, improving operating aspects from the viewpoint of safety for an operator and hygiene for a plant, bettering a finishing craft for the shaped facing and shortening an operating time and cutting cost. SOLUTION: When putty shaping the distorted part of a worked sheet metal facing, first a putty material 13 is applied to the distorted part in such a way that the putty material 13 is built up on the distorted part, and immediately a scraper 1 formed, in a freely curving manner, only in a direction in which it comes into contact with the worked sheet metal facing, is bridged over the distorted part. Under this state, an excess putty material 13b built up is scraped off along the worked sheet metal facings 12a, 12b applied normally. In addition, the putty material 13 is applied anew to the surface of the semicured putty material remaining in the distorted part. Further, without losing time, the excessively built-up putty material 13 is scraped off along the normally applied worked sheet metal facing and under this state, the top coat is allowed to further cure and then is water-ground.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for shaping a distorted portion generated on a sheet metal surface with a putty material, and more particularly, to polishing a putty material applied to the distorted portion without generating a large amount of dust. In addition, it is easy to polish precisely and the number of times of polishing can be simplified, thus preventing pollution, improving the safety and health of workers and factories, and improving the finish of the shaped surface, shortening the working time and reducing the cost. The present invention relates to a putty shaping method for a distorted portion of a sheet metal surface.

[0002]

2. Description of the Related Art Conventionally, when putty-shaping a distorted portion generated on a sheet metal surface, for example, an outer plate portion of an automobile body, the distorted portion is corrected in a restoring direction as much as possible with a special tool or the like.
First, cover the distorted part and putty material (sheet metal putty)
After the putty material is completely dried, the excess portion is ground and polished with a file, an air sander, or the like while visually comparing with a sound sheet metal surface. After the first sharpening operation, a new putty material (intermediate putty) is applied to the polished surface with a spatula. After that, after the putty material is completely dried, the excess portion is sharpened with a file or an air sander. . Since the intermediate putty is applied and sandpaper is used, the sharpening operation is performed a plurality of times, usually 3 to 4 times, while gradually reducing the size of the surface of the polishing paper, so that the correction along the sound sheet metal surface is performed. After this, fine putty material (finished putty)
Is overcoated on the polishing surface, and finish polishing is performed with the finest polishing paper.

[0003]

However, this conventional putty shaping method for a distorted portion of a sheet metal surface has the following problems. 1. There should be no shortage of putty coating on the distorted part, so it must be oversized and as a result, it is difficult for the deep internal solvent to volatilize when dried from the surface side, and therefore it hardens. Is taking extra time. 2. The excess part of the putty material applied to the distorted part is sharpened with a file or an air sander, but since the putty material is applied with a spatula, the surface of the putty material applied is a sound surface of sheet metal. The operator does not need to follow along the line, but the operator relies on the visual and sensation to perform the sharpening. It is needed and inefficient. 3. It consumes a lot of consumables such as putty and abrasive paper, which is uneconomical. 4. The excess portion of the putty material sharpened from a file or an air sander becomes dust, which is scattered and causes pollution, which has an adverse effect on the safety and health of workers and factories. 5. Since a large amount of dust is scattered, even a vehicle performing other repairs stains the interior and the engine room of the vehicle, and requires extra labor for cleaning. 6. There is a lot of manual work, and difficult techniques relying on experience are required, and due to the poor working environment etc., the accuracy of finishing is improved due to the lack of experienced workers due to the poor retention rate of workers. In addition, it requires a long working time, and is not efficient from a technical and management standpoint.

The present invention has been made to solve such a conventional problem, and an object of the present invention is to apply a putty material to a distorted portion generated on a sheet metal surface and polish the portion. When shaping, it does not emit a large amount of dust, it is easy to polish precisely, and the number of times of polishing can be simplified, thus conserving consumables and preventing pollution due to dust generation, and safety of workers and factories. It is an object of the present invention to provide a method for shaping putty on a distorted portion of a sheet metal surface, which can improve the finished surface, improve the finish of the formed surface, shorten the working time, and reduce the cost.

[0005]

According to a first aspect of the present invention, there is provided a method for shaping a putty on a sheet metal surface distorted portion, the method comprising: After applying the material, the scraper formed to bend only in the direction of contact with the sheet metal surface is immediately bridged to the distorted part, followed by a healthy sheet metal surface, and the excess portion of the putty material is removed, and in that state Hardening was advanced and polishing was performed.

According to a second aspect of the present invention, in the method of shaping a putty on a sheet metal surface distorted portion, when shaping the putty on the sheet metal surface distorted portion, after coating the putty material over the distorted portion, the putty material can be bent only in the sheet metal surface contact direction. Immediately after the formed scraper is bridged to the distorted portion, the surplus portion of the putty material is cut off following a healthy sheet metal surface, and when the putty material remaining in the distorted portion is in a semi-cured state, a new putty material is overcoated. Immediately following the sound sheet metal surface, the excess portion of the putty material is scraped off with the scraper having the above configuration, and curing is progressed in that state, after repeating the top coating process until an appropriate surface is obtained in the distorted portion, It was decided to polish.

According to a third aspect of the present invention, there is provided a method for shaping a putty on a sheet metal surface distortion portion.
A paint for grinding was applied to the surface of the putty remaining in the distorted portion, and the putty material was cured and polished, and the finished polished surface was overcoated with a finished putty material.

In the method for shaping putty of a sheet metal surface distortion portion according to the fourth aspect, the polishing according to the first, second or third aspect is all performed by water polishing.

[0009]

According to the first aspect of the present invention, in the process of shaping the putty on the deformed portion of the sheet metal surface, the putty material stagnates and spreads in the process of scraping off the putty material (sheet metal putty) with a scraper following a healthy sheet metal surface. Even if there is an insufficiency on the attachment surface, the insufficiency is sufficiently applied to the insufficiency, so that a putty-coated surface with less unevenness and a healthy sheet metal surface can be obtained. Since such a putty-coated surface has few irregularities, the surface can be polished smoothly and precisely along a healthy sheet metal surface, and the amount of dust due to polishing is extremely reduced, and the polishing time is shortened.

According to the second aspect of the present invention, a new putty material (intermediate putty) that has been applied to the smooth and precise putty surface for the first time and that has been stripped off is also provided with a surface having less unevenness. Therefore, it can be polished smoothly and precisely along a healthy sheet metal surface, and no dust is generated by the polishing. In addition, since the new putty material is applied when the first putty material is semi-cured, the working time is also reduced. in this case,
By performing shaping with the intermediate putty material a plurality of times, for example, twice, the precision is synergized based on the precise surface by the previous shaping and the sound sheet metal surface, and within a shorter time than before,
The shaping surface can be finished to a higher degree without generating dust. Incidentally, the inventor of the present invention, when overcoated with a new putty material when the previously coated putty material is in a semi-cured state, it is possible to well fill the pinholes generated on the previously applied putty surface. Make sure you can.

According to the method for shaping putty of a sheet metal surface distortion portion according to the third aspect, even if shaping with a small number of intermediate putties, the shaping is performed precisely, so that shaping with a lacquer paint has little unevenness and almost the entire surface is uniformly thinned. By doing this, by taking care of this and by performing an appropriate balance, a beautiful shaped surface from which distortion has been sufficiently removed can be efficiently obtained in a short time.

In the method for shaping the putty of the sheet metal surface distortion portion according to the fourth aspect, since the polishing of the putty surface is entirely performed by water sharpening, no dust is generated at the time of the polishing, and the polishing allowance is originally small. It can be precisely finished in a short time by sharpening.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a putty shaping method for a distorted portion of a sheet metal surface according to the present embodiment.
Is an overall perspective view showing a state in which the putty coating surface is scraped off by a scraper, FIG. 2B is an explanatory view of the scraper in use when viewed from the front, and FIG. 3C is a side view of the scraper in use. FIG. 2 is a perspective view showing the same scraper, and FIG. 3 is a sectional view showing the scraper. First, the configuration of the scraper 1 will be described.

The scraper 1 is provided in the shape of a flat rectangular bar with a smooth surface and is suitably soft (soft enough not to be deformed to remove the putty material) and resistant to solvents such as putty material. The side section is formed in a substantially rectangular shape, and the surface serving as the stripping side is formed to have inclined surfaces 3 on both sides so that the ridge line 2 is directed in the axial direction. In the present embodiment, the ridge line 2 is formed at a point. In addition, both side surfaces 4 of the main body have a height that can be held by hand.

A plate-shaped spring 5 is inserted inside the scraper 1 over its entire length. The plate spring 5 is disposed with the flat surface 6 facing the ridge line 2 side, and the scraper 1 is easily bent with both hands only in the direction in which the ridge line 2 is in a plane parallel to the side surfaces 4 and 4, and the force is released. And a resilience that restores to a straight line. The spring 5 has notches 7 at appropriate intervals so that the upper and lower urethane materials are not separated from each other, and the upper and lower portions are integrally connected. In this scraper 1, since the size of the distorted surface requiring shaping varies from small to large,
It is advisable to prepare a plurality of sets having different lengths.

Next, a description will be given of a method of shaping a putty on a deformed portion of a sheet metal surface of a vehicle using the scraper 1. Note that the distorted portion 11 is in a state in which it is dented inward on the outwardly curved (outer radius) sheet metal surface 12, but FIG.
(B) and (c) exaggerate this.

(Sheet metal putty shaping process) (a) First, the deformed portion 11 that has been sufficiently hammered and corrected is covered, and the surrounding healthy sheet metal surface 1 is formed as in the conventional case.
A two-part putty 13 is applied with a spatula so that it rises above 2.

(B) Immediately after the putty 13 is applied with a spatula, the excess portion of the putty 13 is scraped off with the scraper 1. In this case, both ends of the scraper 1 are held by hand so that the side surface 4 is perpendicular to the sheet metal surface 12, and both ends of the scraper 1 straddle the distorted portion 11, and the sound sheet surfaces 12
a, the scraper 1 is bent so that the ridge line 2 is grounded.
From the one direction to the other direction, and the excess portion 13b is scraped off. In the trace that the scraper 1 has passed, a sheet metal putty surface 13a along the sheet metal surface 12 is obtained, which has very little unevenness and excess. The curing proceeds in this state.

(Central Putty Shaping Step) (c) When the sheet metal putty 13 is in a semi-cured state, a new putty (two-pack intermediate putty) is immediately added to the sheet metal putty 1.
On top of 3a, a top coat is applied in the same procedure as for the first putty coating, and a surplus portion is scraped off with a scraper 1, and curing is progressed in this state. The semi-cured state means that when a new overcoated putty is removed, the surface 13a of the sheet metal putty is removed.
This is a cured state to the extent that is not caused. (D) If the intermediate putty is not sufficiently shaped, the second intermediate putty shaping is immediately performed when the intermediate putty is in a semi-cured state. (E) After the second intermediate putty shaping is performed, the surface is sprayed with a scrubbing paint. After the paint is dried, it is polished precisely with a water-sharpening paper while checking the remaining state of the colored portion. This process can be repeated twice to obtain a better surface.

(Finish Putty Shaping Step) (f) After shaping by the final intermediate putty precision polishing, a fine-grained putty (two-pack finish putty) is overcoated on the intermediate putty shaping surface in the same procedure as described above. At the same time, the scraps are scraped off with the scraper 1 and cured in this state. (G) When the surface of the finished putty is in a dry state, a precise putty-shaped surface without distortion can be obtained by precision polishing with a fine-grained water-sharpening paper.

(H) Thereafter, undercoating, overcoating, polishing and the like are performed in the same manner as in the prior art to complete the putty shaping and painting of the sheet metal surface distortion portion.

Although the embodiment of the present invention has been described above, the specific configuration of the present invention is not limited to this embodiment, and there are design changes and the like without departing from the gist of the invention. This is also included in the present invention.

For example, although it has been described that the intermediate putty shaping is performed twice, the present invention is not limited to this, and the intermediate putty shaping step may be omitted once.

Also, the characteristics of the putty material can be set arbitrarily.

[0025]

As described above, in the putty shaping method for the distorted portion of the sheet metal according to the present invention, since the above-described configuration is employed, a putty material is applied to the distorted portion generated on the sheet metal surface.
When polishing and shaping, it does not emit a large amount of dust, prevents pollution due to dust generation, improves the safety and health of workers and factories, and also provides other important custody repair products and factory facilities. Cleaning due to dust contamination can be unnecessary.

Further, since the putty-coated surface has a substantially sound surface of the sheet metal and has a surface with few irregularities, it is easy to precisely polish, so that the polishing time required for one time can be shortened and the polishing step ( The number of times of polishing etc.) can be simplified.

By shortening the polishing time and simplifying the polishing process, it is possible to efficiently arrange the workers and save the consumables.

The effects of improving the finish of the shaped surface without distortion along the sound sheet metal surface, shortening the working time and reducing the cost can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a putty shaping method for a distorted portion of a sheet metal surface according to an embodiment of the present invention, and FIG. 1 (a) is an overall perspective view showing a state where a putty coating surface is scraped off by a scraper. (B)
FIG. 3 is an explanatory view of the scraper in use as viewed from the front. (C) is an explanatory view of the scraper in use when viewed from the side.

FIG. 2 is a perspective view showing the above scraper.

FIG. 3 is a sectional view showing a scraper.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Scraper 2 Scraper ridge line 3 Scraper inclined surface 4 Scraper side surface 5 Plate spring inserted in scraper 6 Plate spring flat surface 7 Plate spring notch 11 Sheet metal surface distorted part 12 Sound sheet metal surface 12a Distorted part One side healthy sheet metal surface 12b Distorted part One side healthy sheet metal surface 13 Putty (sheet metal putty) 13a Sheet metal putty surface 13b Extra part of sheet metal putty

Claims (4)

[Claims] When a putty is formed on a distorted portion of a sheet metal surface, a putter material is applied so as to cover the distorted portion, and then a scraper formed so as to be able to bend only in the sheet metal surface contact direction is immediately bridged to the distorted portion. A method of shaping putty on a distorted portion of a sheet metal, characterized in that a surplus portion of the putty material is scraped off following a healthy sheet metal surface, and curing and progress are performed in that state. 2. When shaping a putty on a distorted portion of a sheet metal surface, after applying a putty material over the distorted portion, a scraper formed so as to be able to bend only in the contact direction of the sheet metal surface is immediately bridged to the distorted portion. Following the sound sheet metal surface, the excess portion of the putty material is scraped off, and when the putty material remaining in the distorted portion is in a semi-cured state, a new putty material is overcoated and the sound sheet metal surface is immediately followed by a sound sheet metal surface. A scraper is used to scrape off the excess portion of the putty material, cure in that state, repeat the above-mentioned overcoating process until an appropriate surface is obtained in the distorted portion, and then grind the portion. Formatting method. 3. A method of applying a new coating material to the finished putty material, removing the overcoated putty material before applying the finished putty material, applying a scrubbing paint to the surface of the putty material remaining in the distorted portion, and curing the putty material. 3. The method according to claim 2, wherein a finish putty material is overcoated on the polished surface obtained by polishing. 4. The method according to claim 1, wherein said polishing is carried out by water sharpening.