JPH03184805A - Manufacture of artificial marble counter - Google Patents

Abstract

PURPOSE:To form a boss section normally even if the boss section and an apron are not connected together by making the height in the vicinity of the boss section of the apron at the time of filling a material to be molded between a top force and a bottom force and forming the boss section and the apron to be connected by a connecting rib. CONSTITUTION:At the time of molding, a gel coat such as polyester resin is applied to a bottom force 4, and a material to be molded composed mainly of polyester resin is filled after curing the gel coat, over which a top force 3 is covered and defoaming is carried out by vibration to cure the material and forming a counter A. A boss section 1 and an apron 2 on the peripheral edge are formed on the rear side of the counter A by covering the top force 3 over the material, and at that time the height of the apron 2 is higher than that of the boss section 1, and forming is carried out in a manner that the boss section l and the apron 2 are connected together by a connecting rib 5. At the time of forming, air in the boss section 1 is exhausted into the apron 2 through the connecting rib 5 and the boss section 1 is formed normally without the remaining foams in the boss section 1. After forming the counter A, the connecting rib 5 is shaved off.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to a method of manufacturing an artificial marble counter used as a top plate of a bathroom vanity or the like.

EConventional technology 1 Conventionally, the general method for manufacturing this type of artificial marble counter is to apply Delcoat, such as polyester resin, to the lower mold, which is the surface of the counter, by spraying or brushing, and after curing, add carbonate to the polyester resin. A molding material (Funbound) mixed with powders such as calcium and aluminum hydroxide is put in, and an upper mold that forms the back side of the counter is placed on top and vibrated to fill the molding material into the mold and simultaneously defoam the air. It is then formed by heating or curing at room temperature.

[Problems to be Solved by the Invention] By the way, an artificial marble counter used as a top plate of a bathroom vanity or the like requires a boss portion into which a bolt fixing nut is inserted in order to connect it to a wooden cabinet. However, when the boss part 1 is not connected to the outer apron 2 like the artificial marble counter A shown in Fig. 1, or when the height of the apron 2 is low even if the boss part 1 and the apron 2 are connected, No matter how much the upper mold 3 and lower mold 4 are vibrated during molding (the more they are vibrated), the air in the boss part 1 cannot escape as shown in FIG. There has been a problem in that the boss portion 1 may not be formed properly due to the build-up.

The present invention has been made in view of the above points, and an object of the present invention is to provide a method for manufacturing an artificial marble counter that can properly form a boss even if the boss and the apron are not connected. .

[Means for Solving the Problems] The method for manufacturing an artificial marble counter of the present invention includes manufacturing an artificial marble counter that has an apron 2 on the outer periphery and a boss portion 1 for attaching to a cabinet so as not to be connected to the apron 2. When molding material is filled between the upper mold 3 and the lower mold 4 for molding, the height of the apron 2 at least in the vicinity of the boss part 1 is made higher than the height of the boss part 1, and the height of the apron 2 is made higher than the height of the boss part 1. It is characterized in that it is molded so that it is connected by a connecting rib 5, and the connecting rib 5 is scraped off after molding.

[Function] During molding, air escapes from the boss 1 to the apron 2 via the connecting rib 5, and air bubbles are not accumulated in the boss 1.
can be formed normally, and the connection between the apron 2 and the boss portion 1 can be eliminated by carving out the connecting rib 5 after molding.

[Example] Figure 1 shows an artificial marble counter A of the present invention, which in this example is used as a top plate of a bathroom vanity.
It can be mounted on top of a cabinet.

On the outer periphery of the counter A, an apron 2 that protrudes toward the back side is provided across the front and both sides, and a boss portion 1 is protruded at a suitable position on the inner periphery side of the apron 2 on the back side of the counter A. A nut 6 is inserted into the boss portion 1 into which a bolt is screwed when installing it to the cabinet. An open lower part for fitting a wash basin is provided in the center of the counter A, and a mounting part 8 is provided on the back side of the periphery of the open lower part. Further, an insertion hole 9 through which a water faucet is inserted is provided at the back of the opening lower door, and a raised green 10 is provided at the back of the front side of the counter A so as to extend between both sides. Counter A like this
is formed by filling a mold consisting of an upper mold 3 and a lower mold 4 with a molding material whose main component is a resin such as polyester resin.

The lower mold 4 is formed in a shape to mold the surface of the counter A, and the upper mold 3 is formed in a shape to mold the surface of the counter A. For molding, a gel coat such as polyester resin is applied to the lower mold 4, and after the Delcoat hardens, it is filled with a molding material mainly composed of polyester resin, and the upper mold 3 is placed on top of the gel coat to remove air bubbles by applying vibration. , and harden to form a counter A as shown in FIG. 2(,). By covering the upper mold 3, a boss part 1 is formed on the back side of the counter A.
At this time, the height of the apron 2 is made higher than the height of the boss part 1, and the boss part 1 and the apron 2 are formed so as to be connected by a connecting rib 5.

The connecting rib 5 has a width W of 21 or more as shown in FIG. 2 (1+). During molding, the air in the boss part 1 escapes to the apron 2 via the connecting rib 5, and the boss part 1 is normally formed without any air bubbles remaining in the boss part 1. After forming the counter A, the connecting ribs 5 are scraped off. When the connecting ribs 5 do not get in the way, the connecting ribs 5 may be left as they are.

The lower end of the apron 2 is finished by grinding or the like, if necessary. The counter A configured in this way is placed on the cabinet 11 as shown in Figure @3, and a piece of the inverted-shaped fixture 12 is fixed to the inner surface of the cabinet 11.
The fixing member 12 is attached by screwing the bolt 13 into the nut 6. At the lower end of apron 2 of counter A, there is an accent molding 14 to improve the appearance.
It is installed by covering it. At this time, since the connecting rib 5 is removed, it does not get in the way when covering the accent molding 14.

Further, FIG. 4 shows another embodiment. In the case of this embodiment, the height of the apron 2 is the same as the height of the boss portion 1 but becomes lower than the height of the boss portion 1 at the final product stage. In this case, the additional part 15 is formed so that the height is increased only near the boss part 1 of the apron 2, and the boss part 1 and the apron 2 are formed so as to be connected by a connecting rib 5 having a width W of 3no++ or more. After molding, the connecting ribs 5 are removed and the additional portion 15 of the apron 2 is scraped off.

[Effect of the Invention 1 As described above, when molding material is filled between the upper mold and the lower mold and molded, the height of the apron near the boss part is made higher than the height of the boss part, and the boss The boss part and the apron are molded so that they are connected by a connecting rib, and the connecting rib is scraped off after molding, so that air in the boss part can escape to the apron through the connecting rib during molding,
This prevents the formation of unfilled areas due to bubbles remaining in the boss, allowing the nut to be firmly attached to the insert, and preventing insufficient filling due to air accumulation in the boss. Since there is no need to tilt the mold, equipment and work can be reduced.

[Brief explanation of drawings]

Figure 1(a) is a perspective view of the artificial marble counter, Figure 1(b) is a bottom view of Figure 1(a), and Figure 1(C) is an enlarged view of section X in Figure 71(b). , Figure 1(d) is Figure 1(b)
FIG. 2 (,) is a cross-sectional view showing the state during molding according to the manufacturing method of the present invention, FIG. 2 (1,) is a plan view of the enlarged state after molding, and FIG. Figure 3 is a cross-sectional view of the same artificial marble counter attached to the cabinet.
Fig. 4 is a sectional view of another embodiment same as above, and Fig. 5 is a sectional view of a conventional example, where A is an artificial marble counter, 1 is a boss portion, 2 is an apron, 3 is an upper mold, and 4 is a lower mold. , 5 are connecting ribs.

Claims (1)

[Claims] [1] In manufacturing an artificial marble counter that has an apron on the outer periphery and a boss part for attaching to the cabinet so as not to be connected to the apron, a molding material is filled between an upper mold and a lower mold and molded. Manufacturing an artificial marble counter characterized by making the height of the apron at least near the boss part higher than the height of the boss part, molding the boss part and the apron so that they are connected by a connecting rib, and scraping off the connecting rib after molding. Method.