JP2003062848A - Foamed styrol molding method and molding apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that a long time is required heretofore in order to mold one part because the molding of foamed styrol is generally performed by the same molding machine and a mold becomes very large, and labor and time are required in the replacement of the mold. SOLUTION: A material filling process 1, a heating process 2, a water cooling process 3 and a standing-to-cool process 4 are separately provided in a foamed styrol molding process and molding is performed in an independent form to shorten a molding cycle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polystyrene foam molding method and apparatus.

[0002]

2. Description of the Related Art Generally, in Styrofoam molding, an integrated mold is fixed to a dedicated molding machine, and material filling, mold heating,
Molding is performed by a series of cycles including water cooling, cooling, and taking out molded products.

[0003]

However, in the above-mentioned conventional molding method, since a series of molding steps are performed by the same molding machine, the total time required for each step such as material filling, heating, cooling and cooling is the molding cycle. Therefore, it took a long time to form one part. In addition, the mold becomes very large, and replacement of the mold takes time and effort.

An object of the present invention is to solve such a problem.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems by dividing the molding into individual steps, performing the molding in independent steps, and moving the mold to perform molding.

That is, the Styrofoam molding method of the present invention comprises a material filling step 1, a heating step 2, a water cooling step 3, a first cooling step 4, a second cooling step 5, a third cooling step 6, and a molded product removing step. 7. The process is divided into the preheating process 8 and the mold 9 moves between the processes to sequentially perform the molding.

As a result, the molding time required in each molding step is the time required for each step such as material filling, heating, cooling, and cooling, and after the material filling is completed, the mold moves to the next step. When the next heating step is completed, the mold is moved to the next step, which is continuously performed until the final step.

Further, the time required for one step as well as other steps can be shortened by arbitrarily increasing or decreasing the number of steps such as a step requiring more time than other steps, for example, the cooling step is divided into two or three steps. .

For example, conventionally, the mold closing and material filling step 35
Seconds, heating step 40 seconds, water cooling step 40 seconds, cooling step 120
In the case of a molded product that required 255 seconds in total, 20 seconds for the product take-out step, the cooling process that takes the longest time is divided into 3 steps to mold, and the time required for each cooling step is about 40 seconds. And that is the molding time per piece.

That is, by dividing each molding step and continuously circulating the mold, the molding cycle can be performed within the molding time of each step, which is sufficiently shorter than that of the conventional molding method.

Further, since each molding is performed in a dedicated process such as a heating process for heating and a cooling process for cooling, the molding conditions are easily stabilized. Also, conventionally, heating with one mold,
Since it was cooled, the mold itself became large, the structure became complicated, the weight was heavy, and its replacement was not easy, and it took time.

However, this molding method is related to material filling,
All the equipment related to conventional molds such as heating, cooling, and taking out molded products are installed in the process of the equipment side, and the mold side consists of the conventional middle mold part, that is, the core mold of the mold, the mold mold only. .

The weight is reduced as compared with the conventional one, and it is easy to handle. In addition, by preparing a mold preparation process in the equipment in advance and preparing the mold there, and incorporating that process in a series of molding cycles, it becomes possible to switch the mold to be molded within one cycle, and high-speed setup. It is possible to change.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the Styrofoam molding method according to the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a diagram of a molding process according to Embodiment 1 of the present invention. 1 is a material filling process, 2 is a heating process, 3 is a water cooling process, 4 is a first cooling process,
Reference numeral 5 is a second cooling step, 6 is a third cooling step, 7 is a molded product removing step, and 8 is a preheating step. A mold 9 moves between these steps to mold expanded polystyrene.

FIG. 2 is a schematic view of the moving die unit. The concave mold 11 and the convex mold 12 are fixed to the frame 13 and the frame 14 via the base plate 15, and the mold part is provided with the material filling port 9 and the molded product extruding rod 16. The material filling air port 10 is on the frame A13,
In the material filling step 1, an air source is supplied to the material filling air port 10. The mold is moved in each process while being fixed to the frame 13 and the frame 14, and is sequentially molded. The mold is independent of each process and only the mold can be moved. Therefore, the mold itself can be easily replaced, and the labor and time required for changing the setup can be greatly reduced.

[0017]

As described above, according to the invention described in claim 1, in the polystyrene foam molding, material filling, heating,
It is a molding method in which each molding process such as water cooling, cooling, and takeout is independently provided, and the styrofoam molding die is moved to the molding process in which the molds are divided and sequentially molded, and the molding time is significantly increased. Can be shortened to

Further, in the invention described in claim 2, in addition to the invention described in claim 1, each molding step can be added or reduced, and the replacement time can be shortened.

According to a third aspect of the present invention, in the Styrofoam molding, each of the molding steps such as material filling, heating, water cooling, cooling, and taking out is independently provided, and the Styrofoam molding die is divided and arranged. By moving to the process, the molding is performed sequentially, and it becomes possible to shorten the die switching.

[Brief description of drawings]

FIG. 1 is a plan view of a continuous molding process according to a first embodiment of the present invention.

FIG. 2 is a front view of the mold according to the first embodiment of the present invention.

[Explanation of symbols]

1 Material filling process 2 heating process 3 Water cooling process 4 First cooling process 5 Second cooling process 6 Third cooling process 7 Molded product removal process 8 Preheating process 9 Material filling port 10 Material filling air port 11 concave mold 12 Convex mold 13 frame A 14 frame B 15 base plate 16 Molded product extruded rod

Claims (3)

[Claims] 1. In Styrofoam molding, each of the molding processes such as material filling, heating, water cooling, cooling, and taking out is independently provided, and the Styrofoam molding die is moved to the molding processes dividedly arranged. A molding method characterized by sequentially molding. 2. The molding method according to claim 1, wherein each molding step can be added or reduced. 3. In Styrofoam molding, each of the molding processes such as material filling, heating, water cooling, cooling, and taking out is independently provided, and the Styrofoam molding die is sequentially moved to the molding processes dividedly arranged. Styrofoam molding device characterized by molding.