JPS59169572A - Device for wiping off coating film at top surface of projected part - Google Patents

Abstract

PURPOSE:To cleanly wipe off a coating film only at projected parts, by wiping off a coating film at the projected parts of the decorative surface of a building material with a wiping roller having some elasticity, washing said roller with a liquid washing agent, and removing dust adherent onto a lower roller. CONSTITUTION:A building material 12 having a rugged pattern on its decorative surface is transferred by a hard lower roller 1 and a wiping roller 2 to which an elastic body 3 is stuck, so that a coating film only at projected parts out of a base coat applied onto the decorative surface of the building material 12 is wiped off by the wiping roller 2. Then, a liquid washing agent 5 is supplied through the supply opening 4a of a nozzle 4 to the wiping roller 2 and reserved at the position of a free roller 6 to wash the outer surface of the wiping roller 2. The liquid washing agent 5 is let fall down along both sides of the roller 2 into a vessel 10. In addition, the liquid washing agent 5 is completely scratched off by a doctor plate 7, a coating film at the different projected parts of the building material 12 is wiped off again by the roller 2, and dust adherent onto the lower roller 1 is removed by another doctor plate 18.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wiping device useful for wiping off only the coating film on the top surface of an uneven pattern on the damaged surface of a hard substrate, particularly a building material made of a metal plate or a synthetic resin plate.

For example, in order to manufacture a building material that has a decorative surface with a concave-convex pattern and has sand attached only to the concave-patterned surface, a base coat is applied to the entire surface of the decorative surface, and then a wiping roller is applied to the top surface of the convex portion (hereinafter simply referred to as It is common practice to wipe off the base coat present on the mesa area, then apply sand to the entire decorative surface, blow off any unadhered sand, apply an overcoat on top, and allow the paint film to dry. Ta. In addition, when manufacturing building materials with two-tone decorative surfaces, in order to make the colors of the recesses and mesa parts clearer, the paint film on the mesa parts is wiped off and a paint film is then applied to the mesa parts. was common. At this time, various devices have been proposed for wiping off the coating film on the mesa portion. However, the cleaning solution cannot reliably wipe off the paint film from the mesa area, and the cleaning solution or paint film remains on the mesa area, resulting in sand sparsely adhering to the mesa area.
The color was mottled and a beautiful cosmetic surface could not be obtained.

In order to eliminate such drawbacks, the present invention provides a surface layer of the outer peripheral surface of the wiping roller with a somewhat elastic roller structure,
In addition, the cleaning liquid is supplied to the outer peripheral surface of the wiping roller that is located on the supply side of the hard substrate, and then the cleaning liquid is spread with a free roller, and the cleaning liquid is removed to the outside of the wiping roller with a doctor blade, so that the cleaning liquid etc. remains in the mesa area,
This paper proposes a device that can produce building materials with beautiful decorative surfaces.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus for wiping off a coating film on a mesa portion according to the present invention will be described in detail below with reference to the drawings. Figures 1 and 2 are a side view and a front view showing the basic configuration of the above device. 1 is a lower roller (puncture up roller) made of hard material such as metal, and the receiver is mainly a surface and a feeding surface. , which functions as a guide. Reference numeral 2 denotes a wiping roller, on the surface of which an elastic material 3 made of a rubber, synthetic rubber, or synthetic resin material having some elasticity, for example, a hardness of about 40 to 80, is formed by pasting or molding.

The wiping roller 2 mainly wipes off the paint film on the mesa portion of the building material (described later) with the cleaned outer peripheral surface to which no paint film is attached, and also holds the lower roller and the building material and transports it in the direction of arrow A. It is. Reference numeral 4 denotes a nozzle in which the cleaning liquid 5 is wiped off on the outer circumferential surface of the roller 2, and a nozzle supply port 4a is disposed at a position away from the outer circumferential surface of the wiping roller 2 at a position where it flows down in the rotational direction. In other words, the supply port 4a is provided on the outer peripheral surface side of the supply side of the building materials to be described later.
It is to arrange. This is to prevent the cleaning liquid 5 from flowing down onto the decorative surface of the building material after being wiped off.

A free roller 6 is used to spread the cleaning liquid 5 on the outer circumferential surface of the wiping roller 2 on the building material supply side, which is useful for cleaning the wiped paint adhering to the outer circumferential surface. It is brought into contact under pressure at a position below the supply port 4a. 7 is a doctor blade that moves the wiping roller 2 between the free roller 6 from the position where the wiping roller 2 contacts the decorative surface of the building material.
The cleaning liquid 5 present on the outer circumferential surface of the roller is removed to the outside of the wiping roller 2 by sliding the cleaning liquid 5 on the outer circumferential surface of the supply side of the roller without going against the rotation of the wiping roller 2 and under pressure. be. That is, the doctor blade 7 is composed of a somewhat elastic plate portion 8, a weight 9, or a spring (not shown). 1
0 is a container for storing cleaning liquid and has a discharge port II at one end. 1
Reference numeral 2 is a building material made of a hard base material, which has an uneven pattern of concave portions 14 and convex portions 15 formed on the decorative surface 13 as shown in FIG. 3, and the depth Δd is approximately 0.3 to 1.5 m. be. In addition,
There are various patterns of unevenness. Reference numeral 18 is a lower doctor blade which contacts the outer peripheral surface of the lower roller 1 on the side where the JIA 12 is supplied, and is arranged so as not to go against the rotation of the lower roller 1, so as to remove dust attached to the outer periphery of the lower roller 1. It is to be removed. Furthermore, to explain the above device, the cosmetic surface 1
3 width, lower roller 1 fitting width W7, lower roll 1 width part, wiping roller 2 width W3, free roller 6 width part,
The width of the container 10 is 1, the length is 1, the diameter of the lower roller 1 is 1,
If the diameter of the wiping roller 2 is D and the diameter of the free roller 6 is D3, then W,>W,,w,>w,,w,>
w,,W,>W,,D Karayo,・D,>Toughness,L,>D
, rank.

Next, the operation will be explained.

Now, a plurality of the above-mentioned devices (three not shown) are arranged in parallel to form a decorative surface 1 as shown in FIGS. 4(a) to (d+).
3 Picture of coating film I6 just applied on the entire surface, mesa part 1
The paint 16a on the mesa part 15 is wiped off, and then sand 17 is scattered, and the excess sand and the sand 1 on the mesa part 15 are removed by wind blowing.
Suppose we remove 7. In addition, the lower roller 1 of each device,
The wiping roller 2 is driven by a gear or chain in the direction of the arrow at approximately the same speed, and pressure is applied to the extent that the contact portion of the elastic material 3 that is in contact with the lower roller 1 is slightly deformed. Assume that it is installed in parallel. Therefore, if the base coat 16 is immediately applied to the decorative surface I3 of the building material 12 and is fed to the first device, the lower roller 1 and the wiping roller 2
While holding the building material 12, part of the paint 16a on the mesa portion is wiped off with the cleaned outer circumferential surface and rotated to the nozzle supply port 4a. A cleaning liquid 5 is supplied to the wiped outer circumferential surface, stored at the position of the free roller 6, and the outer circumferential surface is washed, and the washed liquid is dropped from both sides of the wiping roller 2 into a container 10. Further, since the cleaning liquid 5 flows down with rotation to some extent on the outer circumferential surface of the wiping roller 2 cleaned by the free roller 6, this is completely scraped off by a doctor blade 7 and brought into contact with the decorative surface 13 as a cleaned outer circumferential surface. The base coat 16a on the mesa portion 15 is completely wiped off by sequentially performing these steps using each device. Further, the lower doctor blade 18 is brought into contact with the outer circumference of the lower roller 1 so as to remove dust adhering to the outer periphery at all times or when necessary.

Note that the number of devices and the pressure are determined empirically.

Next, sand 17 is spread from a sand spreader (not shown) over the entire surface of the decorative surface as shown in FIG. 4(C), and excess sand is blown away as shown in FIG. 13
Then, although not shown, an overcoat is applied to the entire surface of the decorative surface, and then dried to complete the decorative surface.

What has been described above is only one embodiment of the apparatus according to the present invention, and as shown in FIG. 5, a gap of Δt is provided between the wiping roller 2 and the free roller 6 to further clean the outer surface of the elastic material 3. Although not shown, the above device can be installed in multiple stages to make it easier to use.
It is also possible to have devices arranged in parallel. Further, instead of the free roller 6, a plate may be provided so as not to oppose the rotation of the wiping roller 2, and with a gap of Δt.

As described above, according to the device for wiping off the paint film on the top surface of the convex portion according to the present invention, ■ Since the cleaning liquid does not leak onto the wiped surface at all, sand does not adhere to the mesa portion, and a decorative surface with a beautiful appearance can be formed. It has characteristics. ■The wiping roller is configured to reliably clean the wiped paint and wipe it off with the corner U, so it has the characteristic of being able to cleanly wipe off the paint film on the mesa area. ■It has the characteristic of being able to guide the building materials without displacing them because it clamps and transfers the building materials under elasticity. -Furthermore, since the cleaning liquid is stored in a container at the bottom, filtered, and circulated, the cleaning liquid can be used effectively.

[Brief explanation of drawings]

Figures 1 and 2 show the coating film on the top surface of the convex portion according to the present invention.
Fig. 3 is a perspective view showing an example of a building material, Fig. 4 fa) to (dl are manufacturing process drawings showing a part of the decorative surface of the building material extracted), Fig. 5 are explanatory diagrams showing other embodiments. ■...lower roller, 2...wiping roller, 6...free roller, 7...doctor blade. Fig. 4 Fig. 5

Claims (1)

[Claims] (1) A lower roller made of hard material, a somewhat elastic wiping roller made of a hard base material for wiping off the paint film on the top surface of the convex portion of the building material, a nozzle for supplying cleaning liquid, and a cleaning liquid applied to the outer peripheral surface of the wiping roller. A free roller that spreads out the wiping roller, a doctor blade that removes the cleaning liquid adhering to the outer peripheral surface of the wiping roller to the outside of the wiping roller, and a lower doctor blade that removes dust from the outer peripheral surface of the lower roller. A lower roller and a lower doctor boot plate are arranged on the back side of a hard base material having an uneven pattern on its surface, following the rotational direction of the lower roller, and a wiping roller is arranged on the front side of the building material. The rollers are arranged opposite to each other so as to sandwich and feed the building materials, and a supply port of the nozzle, a free roller, and a doctor blade are arranged in this order on the outer peripheral surface of the wiping roller facing the supply side of the construction materials. A device that wipes off the paint film on the top surface of the convex part.