JPH0351846B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a manufacturing method for manufacturing an artificial marble washstand counter, and more particularly to a method for embedding an insert nut in a back boss portion.

[Prior Art] Generally, when manufacturing a washstand counter made of artificial marble, a molding material for the artificial marble is injected between an upper mold and a lower mold. At this time, the lower mold forms the surface of the wash counter, and when a back boss portion is provided on the back surface of the wash counter, a recessed portion is provided in the upper mold. However, when molding in this manner, it is difficult for the molding material to flow into the recessed portion of the upper mold, resulting in insufficient filling of the recessed portion, resulting in insufficient strength when an insert nut is embedded in the back boss portion.

[Problems to be Solved by the Invention] The present invention has been made to solve the above-mentioned problems, and its purpose is to form a rear boss portion and to prevent the insertion of the insert nut from becoming insufficiently filled. An object of the present invention is to provide a method for manufacturing an artificial marble washstand counter that can increase its strength.

[Means for Solving the Problems] The method for manufacturing an artificial marble washstand counter of the present invention includes injecting an artificial marble molding material 6 between an upper mold 4 and a lower mold 5 and applying it to the back side of the counter body 1. In a method for manufacturing an artificial marble washstand counter, which forms a back boss part 2 for attaching a washbowl and embeds an insert nut 3 in the back boss part 2,
The insert nut 3 is temporarily fixed to the upper mold 4, and in this state, the molding material 6 of artificial marble is injected to form the back boss part 2 in which the insert nut 3 is embedded in the upper mold 4 in advance.

[Function] Since the back boss portion 2 in which the insert nut 3 is embedded is formed in advance in the upper mold 4, the molding material 6 is placed in the recess 8 for forming the back boss portion 2 of the upper mold 4 during molding.
The embedding strength of the insert nut 3 can be increased without causing any unfilling.

[Example] The present invention will be described below based on an example shown in the accompanying drawings.

The counter body 1 consists of a flat part 1a and a rising part 1b, and the flat part 1a has an opening 9 in the center.
is formed, and a back boss portion 2 is integrally provided on the back side of this opening 9, and this back boss portion 2
An insert nut 3 is embedded in the wash bowl A to form a wash bowl A. The back boss portion 2 may be provided all the way around the back side of the opening 9, or it may be provided partially.Since the insert nut 3 is completely buried and the embedding strength is high, the back boss portion 2 is provided on the back side of the opening 9. Even if the portions 2 are provided at several locations, sufficient mounting strength for the washbasin bowl 7 can be ensured. A fixing bolt 11 is screwed into an insert nut 3 through a mounting fitting 10 to the back side of an opening 9 of a counter body 1, and a washing bowl 7 is attached.

This washstand counter A is manufactured as follows. As shown in FIG. 3, place the insert nut 3 in the recess 8 for forming the back boss 2 on the back side of the upper mold 4 with its opening facing down, and insert the temporary bolt from the front side of the upper mold 4. 12 and screwed into the insert nut 3, and the insert nut 3 is temporarily fixed. In this state, an artificial marble molding material 6 is injected into the recess 8 and hardened to form the back boss portion 2. This molding material is made by blending an unsaturated polyester with a curing agent, a curing accelerator, and a filler such as aluminum hydroxide or calcium carbonate. In this embodiment, the length of the insert nut 3 is longer than the height of the back boss 2 and protrudes from the back boss 2. Next, as shown in FIG.
The upper mold 4 in which the molding material 6 is injected is fitted into the lower mold in which the molding material 6 is injected, and the back mold 1 is placed in the place where the rising portion 1b is formed.
3 is brought into contact with each other to remove air by shaking, harden naturally or by heating, and remove from the mold after hardening. In the washstand counter A formed in this manner, as shown in FIG. 2 and the counter body 1 are firmly integrated without using adhesive or the like.

In other words, in the present invention, the reason why the back boss portion 2 in which the insert nut 3 is embedded in the upper die 4 is formed in advance is because, as shown in FIG.
When the upper mold 4 and the lower mold 5 are fitted together and the molding material 6 is injected, the molding material 6 is not sufficiently filled into the recess 8, and the insert nut 3 is stuck to the rear boss portion 2 as shown in FIG. This is because only the sink counter A″, which is not firmly fixed to the sink and has low embedded strength, is manufactured.

[Effects of the Invention] In the method for manufacturing a washbasin bowl of the present invention, since the back boss portion in which the insert nut is embedded is formed in advance in the upper mold, the recess for forming the back boss portion of the upper mold is This prevents the molding material from being unfilled and increases the embedding strength of the insert nut.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of the washbowl of the present invention, FIG. 2 is a cross-sectional view showing a state in which the washbowl is attached to the same, and FIGS. 3 and 4 are one example of the manufacturing method of the present invention. A cross-sectional view showing each step of the example, FIG.
FIG. 6 is a sectional view showing another manufacturing method for comparison with the manufacturing method of the present invention, and FIG. 7 is a partially omitted perspective view showing a washstand counter manufactured by the same method, A is a washstand counter, 1 is the counter body, 2 is the back boss part, 3 is the insert nut, 4
5 is an upper mold, 5 is a lower mold, 6 is a molding material, and 7 is a washing bowl.

Claims (1)

[Claims] 1. An artificial marble wash basin in which an artificial marble molding material is injected between the upper mold and the lower mold to form a back boss part for attaching a wash bowl on the back side of the counter body, and an insert nut is buried in the back boss part. A method for manufacturing a counter, wherein an insert nut is temporarily fixed to an upper mold, and in this state, an artificial marble molding material is injected to form a back boss portion in which the insert nut is embedded in the upper mold in advance. How to manufacture marble washroom counters.