JP2906111B2 - Manufacturing method of artificial marble - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a method for producing artificial marble.

[0002]

2. Description of the Related Art In a conventional method for producing artificial marble, a batch of a base color compound is first put into a container having an open top, and then a compound with a pattern is put into the base color compound. Prepare a compound with a pattern to be used as artificial marble material.

[0003] Next, the container is moved laterally with respect to the mold while holding the container at a certain height above the mold, and the compound with handle is tilted into the mold and passed through the top of the container. Pour in.

[0004] Next, after the patterned compound poured into the mold is hardened, the compound is released from the mold and subjected to a finishing process to obtain a product. The efficiency is high, and the burden on the worker is extremely large because the work is performed almost in the middle hip position.

[0005]

As described above, automation of the above work is a problem. However, this work often depends on the skill of an operator, and there is a difficulty in standardizing this work.

For example, in the operation of pouring the handle compound into the mold while tilting the container, the handle compound is stretched linearly in the flow.
The degree and condition of this stretching has a significant effect on the quality of the artificial marble pattern. Therefore, the worker
It is necessary to finely adjust the inclination angle of the container to adjust the flow rate, so that this operation requires skill and it is difficult to standardize the operation as it is.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems and aims to automate a method for producing artificial marble.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a step of charging a base color compound into a container having an open top, and a step of charging a patterning compound into the base color compound charged into the container. A step of pouring the compound with the handle into the compound for the base color into the hopper while tilting the container from the top of the container and feeding the compound with the handle into the hopper; A step of dividing the compound with a handle in the hopper into a plurality of strips from a plurality of lower holes of the hopper and pouring the compound into the mold while moving the compound relatively horizontally while maintaining the distance; A step of making the thickness of the compound with the pattern poured into the mold substantially uniform, and a step of removing the mold after the compound with the pattern in the mold is cured It is those related to engineering marble of the manufacturing method.

The method for producing artificial marble according to the present invention may further include a step of replenishing a compound for base color between the compound with a pattern, which is divided into a plurality of strips and poured into the mold.

In the method for producing artificial marble according to the present invention, a plurality of types of artificial marble may be produced by opening and closing the plurality of lower holes of the hopper and adjusting the degree of opening.

[0011]

According to the present invention, the patterning compound floating in the upper region of the base color compound in the container is stretched linearly when poured into the hopper,
In the boundary region with the above-mentioned base color compound, it is slightly oozed into the base color compound. The patterning compound is dispersed and floats in the lower area of the base color compound in the hopper.

Next, when the compound in the hopper is poured into the mold, the compound is divided into a plurality of strips through a plurality of holes provided in a lower portion of the hopper. As a result, the compound for patterning has an ideal distribution in the compound for base, and an artificial marble with extremely good patterning can be obtained.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, a manufacturing apparatus used for carrying out the manufacturing method of the present invention includes a container 1, a hopper 2, a mold 3, and a holding device 4 for suspending the hopper 2.
And a pair of guide rails 5 for moving the hopper 2 in the horizontal direction with respect to the mold 3 while maintaining a constant distance between the hopper 2 and the mold 3, and disengaging from the compound with a handle in the mold 3. A vibrating device (not shown) for applying vibration to the mold 3 to generate bubbles.

The mold 3 is horizontally arranged as shown in the figure, and a support frame 4a of the holding device 4 is set up so as to substantially surround the mold 3.

On the right side of the support frame 4a in FIG.
The container 1 is mounted so that the container 1 can be freely tilted. The pair of guide rails 5 is attached to the top of the support frame 4a in parallel with a pair of opposing sides of the rectangular mold 3.

Next, the hopper 2 is provided with the pair of guide rails 5.
Is suspended via four suspension members 4b of the holding device 4. That is, the upper end of the suspension member 4b is connected to the guide rail 5, and is guided and movable by the guide rail 5. The other end of the suspension member 4b is attached to the hopper 2. Thus, the hopper 2 is held horizontally by the four suspension members 4b, and is movable along the pair of sides of the formwork 3.

Next, the top of the container 1 is completely opened, so that a base color compound 21 and a patterning compound 22 described later can be easily flowed into and out of the container 1 from the top. The top of the hopper 2 is also completely open, and a plurality of holes 7 (see FIG. 2) are provided below the hopper 2. Each hole can be opened and closed by a valve 6a. The structure can be simplified by replacing these valves 6a with the shutters 6b shown in FIG.

That is, as shown in FIG. 2, a pair of guide rails 8 are mounted on both sides of a plurality of holes 7 arranged side by side on the bottom of the hopper 2, respectively.
b is slidable in the left-right direction in the figure while both side edges thereof are supported by the pair of guide rails 8. Thus, compared to the valve 6a, the shutter 6b has an insufficiently closed hole 7, and it is impossible to selectively open and close a part of the plurality of holes 7. However, since the structure is simple, there is an advantage that the hopper 2 can be easily cleaned.

In the above manufacturing apparatus, the operation of tilting the container 1, the operation of moving the hopper 2 along the guide rail 5, the operation of opening and closing the valve 6a, and the like may all be performed manually. Can also be automated. In this case, the drive system and the like necessary for the automation are already known, and the description is omitted.

In the above manufacturing apparatus, the hopper 2 is suspended from the holding device 4 and moved.
May be fixed to the holding device 4 so that the holding device 4 itself can be moved. Alternatively, the holding device and the hopper may be fixed, and the form 3 may be moved instead.

Next, a method of manufacturing artificial marble using the above-described manufacturing apparatus will be described.

First, a mold release agent such as a wax is applied to the mold frame 3, and then a gel coat resin is sprayed on the mold release agent to be thermally cured. In addition, this gel coat resin was previously used as a curing agent with methyl ethyl ketone peroxide 1.0.
%, And 0.5% of cobalt naphthenate as an accelerator.

Next, one batch of base color compound 21 (FIG. 3) is prepared. The composition is, for example, unsaturated polyester resin 100 aluminum hydroxide 300 toner 1.0 curing agent methyl ethyl ketone Peroxide 1.0 As a promoter, consisting of 0.5 parts by weight of cobalt naphthenate. These materials are charged into a container, uniformly mixed using a vacuum stirrer or the like, and then charged into the vertically placed container 1 via the top.

Next, a compound for patterning 22 (FIG. 3) is prepared, and its composition is almost the same as that of the compound for base color 21 except for the type and amount of the toner.

These materials are kneaded on a plate using, for example, a knife or a spatula, and then charged into the base color compound 21 in the container 1. In this case, the amount ratio is determined based on the base color compound. With respect to 100, the compound for patterning is about 0.1 to several percent. Since the density of the compound for patterning is usually almost the same as that of the compound for base color, the compound for patterning is dispersed in the container 1 and floats in the upper region of the compound for base color.

Next, the handle compound 23 (FIG. 3) in the container 1 consisting of the base color compound 21 and the handle compound 22 is passed through the top of the container 1 while tilting the container 1, as shown in FIG. Hopper 2 at the position indicated by the chain line
Pour through the top. In this case, the plurality of holes 7 provided in the lower part of the hopper 2 are closed by operating the valve 6a.

Thus, in the container 1, the patterning compound floating in the upper region of the base color compound is dispersed and floats in the hopper 2 in the lower region of the base color compound.

Next, the valve 6a is operated to select one of the plurality of holes 7 to be opened, and after adjusting the opening degree of each of the holes 7 to be opened, the suspension member 4b is guided by the guide rail 8. Then, the hopper 2 is moved from the position indicated by the alternate long and short dash line in FIG. 1 to the position indicated by the solid line in FIG. Thus, a plurality of patterned compounds 23 are arranged in parallel in the form as shown in FIG. 3 (A). The speed of the hopper 2 and the opening of the hole 7 are appropriately set so that the compound compound with a plurality of handles is not interrupted on the way.

A base color compound is supplied between the patterned compound 23 in the state shown in FIG.
Further, the flatness is corrected using a tool such as a spatula.

Next, the vibrating device (not shown) is started, and vibration is applied to the mold 3 for several minutes to defoam the compound with the handle in the mold 3 and the compound with the handle is removed as shown in FIG. Form into a plate as shown in B). When the viscosity of the compound is low, the bubble naturally rises with the passage of time, so that the vibrating device may not be required.

Next, the temperature is raised to 40 to 6 for 10 to 120 minutes.
After hardening the compound with a pattern in the mold while maintaining the temperature at 0 ° C., the mold is removed and finish processing is performed to obtain a product.

In the present invention, the compound for patterning is dispersed and floated in the container in the form of a plurality of lumps in the upper region of the compound for base color.

Next, while tilting the container, a compound with a handle (the compound with the handle was put into the compound for the base color as described above) is poured into the hopper from the top side. Each of the application compounds is linearly stretched, but in the boundary region with the base color compound, the compound is slightly oozed into the base color compound.

When the handle compound is stored in the hopper, the handle compound is dispersed and floats in the lower region of the base color compound.

Next, when the compound with pattern is divided by the plurality of holes provided in the lower part of the hopper and poured into the mold, the distribution of the compound with pattern in the compound for base color has a complicated distribution. And, according to experience, very favorable marble patterns are obtained. At this time, by changing the opening degree of the valve or changing the moving speed of the hopper, it is possible to experimentally obtain a preferable marble pattern, and the conditions are repeated in an automated manufacturing apparatus. As a result, it becomes possible to stably supply the ideal artificial marble.

[0036]

According to the present invention constructed as described above, the compound for patterning further charged in the compound for base color put in the container having an open top is used for the base color in the container. The compound is dispersed and floats in the upper region of the compound, and then when the patterned compound is poured from the container into the hopper, the compound is dispersed and floats in the lower region of the hopper. Therefore, when the compound with a handle in this hopper is divided into a plurality of strips from a plurality of lower holes of the hopper and poured into a mold, a plurality of compounds with a columnar handle are formed in the mold at an appropriate interval. Therefore, as illustrated in FIG. 3 (B), when the plurality of compounds for patterning present in each of the plurality of compounds with columnar patterns are suitable as a whole when viewed as the entire compound with pattern in the formwork. The artificial marble has a surface pattern very close to that of natural marble and is made of high-grade artificial marble with a relatively simple structure. It can be manufactured using a manufacturing apparatus. Further, according to the present invention, it is possible to efficiently and stably produce a high-quality artificial marble having a surface pattern very close to that of natural marble using an artificial marble production apparatus having a relatively simple structure. Because you can
The conventional method, which had a lot of dependence on the skill of the worker and thus was difficult to automate, can be greatly improved, and as a result, the burden on the worker can be remarkably reduced. Even if the person is immature, it is possible to produce artificial marble with a good pattern very easily. According to the second aspect of the present invention, as shown in FIG. 3B, the obtained artificial marble has long stripes in a plurality of base color compounds that are present at appropriate intervals. A plurality of patterning compounds present in a form and a base color compound replenished so as to be present between the plurality of patterning compounds. Because of the surface pattern, the appearance is further improved, and the process of making the thickness of the patterned compound poured into the mold substantially uniform is extremely simple. According to the third aspect of the present invention, it is extremely easy to manufacture various types of artificial marble using a common artificial marble manufacturing apparatus.
A plurality of types of artificial marble having slightly different surface patterns can be produced very easily.

[Brief description of the drawings]

FIG. 1 is a perspective view of an apparatus for manufacturing artificial marble according to an embodiment of the present invention.

FIG. 2 is a bottom view of a main part of the hopper showing a modified example of the hopper of the artificial marble manufacturing apparatus shown in FIG.

FIG. 3 (A) is an explanatory view of a patterned compound immediately after being poured into a mold. (B) It is explanatory drawing of the compound with a pattern hardened in the mold.

[Explanation of symbols]

 Reference Signs List 1 container 2 hopper 3 formwork 4 holding device 4a support frame 4b suspension member 5 guide rail (moving device) 6a valve (opening / closing means) 6b shutter (opening / closing means) 7 lower hole 21 base color compound 22 compound for patterning 23 Patterned compound

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B29C 39/00-39/44 B44F 9/04

Claims (3)

(57) [Claims] And 1. A process for introducing base color for compounds in the opened container top, a step of introducing a with handle compound to the base color for compounds that are put into the container, to the base color for compound a step of pouring a handle with compounds of the for with handle compound, which are put intoゝhopper from the top One tilting the vessel of the container, relatively horizontal while maintaining the hopper ho to mold Isuzu fixed distance while moving the plurality of the steps of pouring and diverted into a plurality Article in the mold from the lower hole, handle with compounds which elaborate flowed diverted into a plurality Article above mold of the hopper the handle with compound in the hopper process and, artificial marble method of manufacturing that includes a step of performing demolding after the handle with compound in the mold is cured to a thickness ho Isuzu uniform. 2. A base color compound is interposed between the compound with a pattern which is divided into a plurality of strips and poured into the formwork.
The method for producing artificial marble according to claim 1, further comprising a step of replenishing . Wherein opening and closing of the plurality of bottom hole of the hopper Oyo
By adjusting the opening and opening, multiple types of artificial marble can be used.
3. The method for producing artificial marble according to claim 1 or 2, wherein the artificial marble is produced .