JPH0422404B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an improvement in a method for forming a counter with a bowl made of artificial marble.

[Background technology] Conventionally, a counter 3' with an artificial marble bowl
The mold used for molding consists of an upper mold 1' and a lower mold 2', as shown in FIG. 5, and the molded product is molded upside down. The molding material 5 is filled between the lower mold 2' and the upper mold 1', and then the molding material 5 is filled through the molding mold.
Vibration is applied to the air bubbles in the molding material 5 to be defoamed through an opening 6' provided in the upper die 1' so as to correspond to the drain port 8'. Then, insert 12' from opening 6' of upper mold 1'.
was inserted to form the drain port 8'. At this time, since the drain port 8' is located at the bottom of the bowl portion 4' and is biased toward one side 9' in the horizontal direction, the slope of the molding surface on the one side 9' where the drain port 8' is located is The slope is steep, and the molding surface on the other side 10' which is continuous with the drain port 8' has a gentle slope. For this reason, in the conventional example described above, when the molding material 5 is degassed by vibration in the mold, the air bubbles on one side 9' become drain port 8' due to the steep slope of the molding surface of the mold. Although the bubbles on the other side 10' are easier to escape than the opening 6' of the correspondingly provided upper mold 1', the air bubbles on the other side 10' are harder to escape than the opening 6' because the slope of the molding surface of the mold is gentle, and they stop midway. , if the vibration defoaming time is short, the sixth
As shown in the figure, air bubbles were accumulated approximately at the center of the other side 10', and even when the molding material 5 was cured, the air bubbles did not escape, resulting in a molded product with an unfilled portion 7. The unfilled portion 7 of the molded product molded according to the conventional method as described above not only has a poor appearance but also has weak strength, and when hot water is poured into the bowl portion 4', the bowl portion 4' is damaged due to thermal shock. It may also cause cracking.
In other words, because of the above-mentioned drawbacks, it was difficult to form a counter 3' with an artificial marble bowl that was integrated with a large washbasin bowl that also served as a hair wash.
Furthermore, in order to remove as many air bubbles from the molding material 5 as possible, it is necessary to lengthen the vibration defoaming time, which also lengthens the molding time.

[Purpose of the Invention] The present invention removes air bubbles from the slit provided in the upper mold by vibration, and then fills the missing molding material through the slit and the opening, thereby producing a bowl made of artificial marble with an integrated bowl part. The purpose is to easily mold a counter without any defects.

[Disclosure of the Invention] The method for forming a counter with a bowl made of artificial marble according to the present invention includes integrally providing the counter 15 with a laterally long bowl portion 4 when viewed from the top, and making the bottom of the bowl portion 4 biased to one side 9 in the lateral direction. When molding a counter 3 with a bowl made of artificial marble with a drain port 8 using an upper mold 1 and a lower mold 2, the upper mold 1 and the lower mold 2
A molding material 5 is filled between the molding material 5 and vibration is applied to the opening 6 provided in the upper mold 1 to correspond to the drain port 8.
At the same time, the air bubbles removed by vibration are removed from the slit 11 provided in the upper mold 1 so as to correspond to the position between the drain port 8 of the bowl part 4 and the other side 10, and then, Opening 6 and slit 11
The drawbacks of the conventional example are solved by filling the missing amount of molding material 5 from the molding material 5.

The present invention will be explained in detail below with reference to Examples.

As shown in FIG. 1, the mold is made up of an upper mold 1 and a lower mold 2, and has a horizontally long bowl part 4 on the counter 15 when viewed from above, and also has a horizontally long bowl part 4 at the bottom of the bowl part 4. A space is provided between an upper mold 1 and a lower mold 2 for molding a counter 3 with a bowl made of artificial marble and having a drain port 8 biased toward a side 9. The upper mold 1 is provided with an opening 6 that passes through it vertically at a position where the drain port 8 is to be formed. At this time, since the position of the drain port 6 is biased to one side 9 in the lateral direction of the bowl portion 4, the slope of the molding surface on the one side 9 is steeper than the location where the drain port 8 is formed. The slope of the molding surface on the other side 10 is gentler than that where the molding surface is provided. The upper mold 1 has a drain port 8 for the bowl portion 4.
A slit 11 for injecting the molding material 5, which also serves to remove air bubbles, is provided at a position between the location where the molding material 5 is provided and the other side 10. This slit 1
Position 1 is the back surface of the bottom of the bowl part 4 of the upper mold 1, which is the position where air bubbles contained in the molding material 5 filled between the upper mold 1 and the lower mold 2 are most likely to accumulate and are difficult to escape, as described above. It is provided at a position corresponding to the gently sloped molding surface on the other side 10. Also slit 11
Since it also serves as the injection material for the molding material 5, it is necessary to have a width of 5 mm or more and a length of 30 mm or more. The counter 3 with a bowl made of artificial marble is molded as follows. First, a molding material 5 is laminated on the molding surface of the lower mold 2. This molding material 5 is a kneaded material consisting of a resin and a filler. Then, the upper mold 1 is placed on the lower mold 2 so as to cover the molding material 5 of the lower mold 2, and vibration is applied to the molding mold made up of the upper mold 1 and the lower mold 2 to vibrate and defoam the molding material 5. do. At this time, the air bubbles in the molding material 5 on one side 9 are removed from the opening 6 of the upper mold 1 provided so as to correspond to the drain port 8.
Get out more. After the molding material 5 is filled into the unfilled portion near the drain port 8 created by the escaped air bubbles, the insert 12 is inserted into the opening 6 of the upper mold 1 to form the drain port 8. Further, the air bubbles in the molding material 5 on the other side 10 escape through the slit 11 provided in the upper mold 1. After the air bubbles in the molding material 5 on the other side 10 have escaped through the slit 11, the unfilled slit 11 is filled with the molding material 5 before the molding material 5 hardens. As shown in FIG. 2, a molded product molded using the upper die 1 having the slits 11 as described above has a protrusion 13 having the same shape as the slit 11 on the back surface of the bowl portion 4, but this may cause problems in terms of appearance or structure. If not, you can leave it as is. However, if the protrusion 13 on the back side poses a problem in terms of appearance or structure, after molding the molding material 5,
Cut the protrusion 13 on the back side of the molded product. In another example, the molding material 5 is degassed by vibration in a mold,
After filling the unfilled portion 7 with the molding material 5 through the slit 11 of the upper mold 1, the slit 1 is opened as shown in FIG.
Insert the slit insert 14 that matches 1 into the slit 11.
The back surface of the bowl part 4 can be made flat by fitting it into the counter 3 with an artificial marble bowl.

[Effects of the Invention] As described above, the present invention is characterized in that a molding material is filled between an upper mold and a lower mold, vibration is applied, and air bubbles are removed by vibration from an opening provided in the upper mold corresponding to a drainage port. At the same time, the air bubbles are removed through the slit provided in the upper mold corresponding to the position between the drain port and the other side of the bowl part, so the air bubbles can also be removed from the slit. Since air bubbles do not accumulate in the gently sloped part of the back surface of the bowl where air bubbles could not escape, and the missing amount of molding material is filled through the openings and slits, the molding material can be filled after the air bubbles have escaped. Therefore, an unfilled area due to insufficient filling of the molding material due to air bubbles is not formed on the back surface of the bowl portion, and a molded product with high strength can be molded. In addition, since the above-mentioned unfilled areas can be prevented from occurring, the vibration defoaming time for defoaming the bubbles is shortened, so the molding time of the molded product can be shortened, and the molded product does not have any unfilled parts. It is possible to easily mold a molded product with high strength in a short time.

[Brief explanation of drawings]

Fig. 1 is a sectional view of one embodiment of the present invention, Fig. 2 is a perspective view of the same molded product, Fig. 3 is a perspective view of the same with the protrusion removed, and Fig. 4 is another embodiment of the same. 5 is a sectional view of the conventional example, and FIG. 6 is an enlarged sectional view of the unfilled portion of the same as above, in which 1 is an upper mold, 2 is a lower mold, 3 is a counter with an artificial marble bowl, 4 is a bowl part,
5 is a molding material, 6 is an opening, 8 is a drain port, 9 is one side, 10 is another side, 11 is a slit, and 15 is a counter.

Claims (1)

[Claims] 1. A counter with an artificial marble bowl is provided with an upper mold and a lower mold, in which a horizontally long bowl part is integrally provided on the counter when viewed from the top, and a drainage port is provided at the bottom of the bowl part at an angle to one side in the horizontal direction. During molding, the molding material is filled between the upper mold and the lower mold, vibration is applied, and air bubbles are removed through an opening provided in the upper mold corresponding to the above-mentioned drainage hole, and the air is removed from the bowl. The air bubbles removed by vibration are removed through a slit provided in the upper mold corresponding to the position between the drainage port of the part and the other side, and then the missing molding material is filled through the opening and the slit. A method of forming a counter with an artificial marble bowl.