JPH08216157A - Apparatus for heating and cooling mold - Google Patents

Abstract

PURPOSE: To thin the thickness of a casting, to accelerate cooling and temp. rise and to manage without perforating a long hole in a mold by making several channels on the mold, arranging pipes in these channels and fixing them by pouring a metallic filler with a relatively low m.p. CONSTITUTION: A pipe 3 is placed in a channel 2 of a mold 1 and it is embedded with a filler 4. A continuation of the pipe 3 advances and retreats from an inlet to an outlet. The channel 2 of this mold 1 has a shape wherein the surface side becomes narrower and the inside is widened. Namely, a channel 2 wherein the surface becomes narrower and the inside is widened is prepd. with a casting and a pipe is arranged therein and it is embedded with a filler 4. In this instance, this filler 4 is a relatively low m.p. metal such as zinc alloy, lead and aluminum. In the pipe 3 arranged like this, cool water, hot water, cooled oil, hot oil, air or gas flows. As the result, the mold 1 can be quickly heated and cooled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating / cooling device for a thermoplastic resin mold / thermosetting resin mold.

[0002]

2. Description of the Related Art Conventionally, a water channel or an oil channel by machining is shown in FIG. 4, but since this is drilling, only linear machining can be performed regardless of the unevenness of the mold surface shape.
The distance between the mold surface and the water channel (oil channel) becomes non-uniform, the weight of the mold material increases, and temperature unevenness occurs. Secondly, there is a method of collecting water on the back surface of the mold as shown in FIG. 5, but there is a part where the water flow is bad, or air remains between the back surface of the mold and water, resulting in non-contact and poor efficiency. .
Next, in order to secure the water channel or oil channel shown in FIG.
There is also a method in which the pipe is fixed to the back surface of the mold by a stopper plate and is covered by metal spraying. Since this conforms to the unevenness of the mold surface shape, it is possible to reduce the weight of the mold material and obtain a stable temperature, but the processing cost of fixing the pipe with a stopper and the material cost and processing cost of metal spraying are large and economic efficiency is high. Is bad. Next, there is a method of heating a mold by inserting a cartridge heater (electric heater) into a deep hole that has been drilled as shown in FIG. 6, but it is possible to obtain a stable temperature distribution and good thermal efficiency, but the processing cost is high. Large and poor in economic efficiency.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a thin-walled pipe cannot be curvedly cast during casting of cast iron. It is an object of the present invention to provide a mold heating / cooling device which is solved by casting and is efficient.

[0004]

SUMMARY OF THE INVENTION According to the present invention, several grooves are formed in a mold, a pipe is arranged in the grooves, and a metal filler having a relatively low melting point is poured and fixed. The mold heating and cooling device and its pipe move forward and backward in the mold,
The present invention relates to a heating / cooling device for a mold, which is connected in a series of reciprocations from an inlet to an outlet, and a heating / cooling device for a mold in which its groove is dented on the surface and spreads inside.

[0005]

[Operation] As a method of making, make a groove in the styrene material.
This is the back of the mold. Then blow with a casting. Then
It becomes a casting with a groove. Pipe the pipe so that it does not float in the groove of the casting, and fill it with other embedding material.

[0006]

EXAMPLE A pipe 3 is put in the groove 2 of all molds and filled with a filling 4. The pipe 3 advances and retreats from the inlet 5 in series as shown in FIG. The groove is dented on the front side so that the pipe and filling do not come off, and it has a shape that expands into the inside.
That is, a groove is formed by casting, the surface of which is recessed and the inside of which is widened, and a pipe is arranged therein and filled with a filler. The filler is a zinc alloy, lead, aluminum or the like having a relatively low melting point.
Inside the pipe 3, cold water or hot water, or chilled oil,
Or heated oil, air, or gas flows. In the conventional example, 7 is a pipe, 8 is water, 9 is a cartridge heater, and 10 is a stopper.

[0007]

When the present invention is carried out, the wall thickness of the casting is thin, the cooling and temperature rise are fast, the material cost is low, the construction cost is low, and no long holes are formed in the mold, so that the advantages such as quick completion are obtained. There is.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a mold of the present invention.

FIG. 2 is a plan view showing a pipe.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view of a conventional oil heater system.

FIG. 5 is a cross-sectional view of a conventional method using water.

FIG. 6 is a sectional view of a conventional cartridge heater system.

FIG. 7 is a sectional view of a pipe clasp type.

[Explanation of symbols]

 1 Mold 2 Groove 3 Pipe 4 Filler 5 Inlet 6 Outlet 7 Pipe 8 Water 9 Cartridge Heater 10 Stopper

Claims (3)

[Claims] 1. A heating / cooling device for a mold, wherein several grooves are formed in a mold, a pipe is arranged in the groove, and a metallic filler having a relatively low melting point is poured and fixed. 2. A mold heating / cooling device in which the pipe is moved forward and backward through the mold and is reciprocated from the inlet to the outlet. 3. A heating / cooling device for a die, the groove of which is concave on the surface and which is formed so as to extend into the inside.