JP2003211456A - Temperature regulation system of resin molding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the temperature regulation system of a resin molding machine capable of coping with zero emission without performing the taking in and out of a fluid such as water or the like from the outside and reducing a problem in the electric system of the molding machine. <P>SOLUTION: The shell internal pipeline 6g piercing through the shell body of a mold 1(K) being a part to be controlled in temperature and a temperature regulation part 5 equipped with a reflux pump 3 and a heat exchanger 2 are connected by a pipeline to constitute a closed temperature regulation pipeline system 6 and the temperature of a medium W is regulated by the radiator type heat exchanger 2 while the medium W is refluxed into the temperature regulation pipeline system 6 by the reflux pump 3 to hold the mold 1(K) to a predetermined temperature. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature adjusting system for maintaining a temperature controlled portion of a resin molding machine in which temperature control is important for resin molding at a predetermined temperature.

[0002]

2. Description of the Related Art In a resin molding machine, in order to perform resin molding satisfactorily, temperature control is important as a temperature controlled section.
There are a molding material charging section for charging a molding material into a screw of a resin molding machine, a molding die which is detachably attached to the resin molding machine, and the like.

The molding material charging section is arranged in proximity to or integrally with a cylinder accommodating the screw, and this cylinder is provided with a heater for heating and melting the resin molding material inside, that is, the resin pellets. As a result, the heating of this heater also heats the molding material charging part to an appropriate temperature or higher, which may adversely affect the resin molding material passing through this molding material charging part and cause molding failure. there were.

For this reason, conventionally, in order to maintain the molding material charging portion at an appropriate temperature, an in-shell pipe passage is provided through the shell body of this charging portion, and cooling water is allowed to flow therethrough. A temperature control system at the input was used.

The molding die is a portion for molding a resin molded product by injecting a heated and melted resin into the mold and maintaining the resin at a predetermined temperature. The temperature control depends on the quality of the resin molded product. , Which is very important, and various temperature control systems have been proposed.

FIG. 5 is an overall configuration diagram showing an example of a conventional temperature control system for a molding die.

The temperature control system 110 controls the temperature of a molding die K composed of a fixed die KA and a moving die KB, and a shell body of the molding die K (here, a temperature controlled part). In-shell conduit 10 flowing through the mold itself)
6 g, a temperature control unit 105 provided with a reflux pump 103 and a medium tank 104, and a temperature control pipeline system 106 connecting these to each other through pipelines, using water as a medium.

The reflux pump 103 is equipped with a pressure gauge 103a for displaying the pressure of the medium output from the pump 103, and a control sensor 103b for measuring the temperature of the medium W at the inflow portion of the pump 103.

The medium tank 104 is a tank for storing the medium, and a heater 104 for heating the stored medium.
a, a liquid level gauge 104b for managing the liquid level of the medium W stored in the medium tank 104, and a discharge conduit 1 for overflow discharge of a predetermined amount or more of the medium W to the discharge destination WO
It is equipped with 04c.

In the medium tank 104, when the temperature of the medium W measured by the control sensor 103b is lower than a predetermined temperature, it is heated by the heater 104a and
When the temperature is higher than the predetermined temperature, the temperature of the medium (cooling water) is lowered by receiving the low temperature medium (cooling water) from the medium source WI through the supply pipeline 106a equipped with the filter F and the supply valve 106b. Only the amount of water) is discharged to the drainage destination WO.

In addition to the parts already described, the temperature control pipeline 106 connects the medium tank 104 and the reflux pump 103, and is provided with a drain D, the pipeline 106c and the reflux pump 103.
106d from the mold to the molding die K, and the in-shell conduits 106 of both the fixed die KA and the moving die KB from this pipeline 106d.
Pipe line 1 branched to g and provided with a medium feed valve 106e for each
06f, the medium tank 10 from the outlet side of the in-shell conduit 106g
4, a pipe line 10 provided with a return valve 106i on each side.
6 h, this conduit 106 h joins and is equipped with a conduit 106 j connected to the heat exchanger 104.

The temperature control line system 106 further includes the line 10.
6d, a pressure adjusting valve 106l is provided, and a pipe line 106k returning to the medium tank 104 is provided. When the pressure of the medium exceeds a predetermined pressure by the pressure adjusting valve 106l, the medium tank 104 is moved to the medium tank 104. By returning the medium, the conduit 10 that goes to the molding die of the temperature control conduit system 106.
The medium pressure of 6d to 106j is adjusted. The pressure adjusting valve 106l may be a manual adjusting valve.

With such a configuration, in the temperature adjusting system 110, the medium source W is provided by the temperature adjusting unit 105 including the medium tank 104, the control sensor 103b and the like.
Supply of the low temperature medium supplied from I and the heater 104a
By adjusting the temperature of the medium in the medium tank 104 by controlling the heating by the medium, the pipe line 106 in the shell of the molding die K is adjusted.
The temperature of the medium passing through g could be adjusted to maintain the molding die K at a predetermined temperature.

FIG. 6 is an overall configuration diagram showing another example of a conventional temperature control system for a molding die. Therefore, the same parts as those already described are designated by the same reference numerals, and the duplicate description will be omitted.

This temperature control system 210, like the system 110 of FIG. 5, controls the temperature of the molding die K, and has a shell inner pipe 206g that flows through the molding die K which is the temperature controlled part. A temperature control unit 205 having a reflux pump 203 and a medium tank 204, and a temperature control pipeline system 206 connecting these to each other are provided, but they are different in that oil is used as a medium.

Since this system 210 uses oil as the medium W, the temperature control pipe system 206 is formed in the molding die K.
And a medium tank 204, the components 206c to 206j are components of the temperature control conduit system 106 of the system 110 of FIG.
It is the same as 106j and has the same function. The same applies to the reflux pump 203.

The medium tank 204 is the medium tank 1 of FIG.
In addition to the heater 204a similar to 04, a medium supply port 204b dedicated to medium supply and provided with a float switch 204d and a discharge pipe line 204c for overflow discharge of excess medium to the discharge destination WO is provided. The symbol O
I is the medium source of the medium W which is oil, and the symbol OO is the discharge destination of this medium.

In this system 210, a medium cooling pipe system 207 is provided in order to lower the temperature of the medium stored in the medium tank 204, and this pipe system 207 uses water as the medium.

The medium cooling pipeline system 207 is connected to the supply pipeline 207a from the medium source WI which is water to the supply valve 207b, the pipeline 207c from the supply valve 106b to the medium tank 204, and this pipeline 207c. A heat exchange conduit 207d for exchanging heat with the medium (oil) stored in the tank 204, and a discharge conduit 207e from this conduit 207d to the discharge destination WO are provided.

With such a configuration, in the temperature control system 210, the temperature of the medium W in the medium tank 204 is indirectly cooled by the low temperature medium (water) supplied from the medium source WI and heated by the heater 204a. The temperature of the medium passing through the in-shell pipe line 206g of the molding die K was adjusted by controlling the temperature, so that the molding die K could be maintained at a predetermined temperature.

[0021]

However, in any of the above-mentioned conventional systems, the medium is a valuable resource because it is a system in which the medium is directly or indirectly put in from the outside for cooling and discharged by that much. It cannot be said that (in this case, water) is effectively used, and there is a demand for a cooling or temperature control method in which no medium comes in or goes out.

Further, this requirement also corresponds to zero emission in consideration of so-called environmental problems, and improvement has been required also from this point.

Furthermore, in recent years, in resin molding machines,
From the viewpoint of maintenance and responsiveness, it has been proposed to use only electricity as a drive source for the mold without using hydraulic pressure, but in that case, it is desirable to avoid water from entering and leaving the device as much as possible. There was also.

The present invention is intended to solve the above problems, and an object of the present invention is to provide a temperature control system for a resin molding machine which can cope with zero emission without allowing a fluid such as water to flow in or out.

[0025]

According to a first aspect of the present invention, there is provided a temperature control system for a resin molding machine, wherein in a resin molding machine, a temperature controlled part for which temperature control is important for resin molding is maintained at a predetermined temperature. In the temperature control system for controlling the temperature of the temperature controlled part, a shell internal pipe that flows through the shell of the temperature controlled part, and a temperature control part that includes a reflux pump, a medium tank, and a heat exchanger are connected by a pipe. A closed temperature control pipe system is constituted, an air-cooled radiator is used as the heat exchanger, and the temperature of the medium is controlled by the heat exchanger while refluxing the medium in the temperature control pipe system by the reflux pump. Is controlled to maintain the temperature controlled part at a predetermined temperature.

In this temperature control system, the medium is circulated to a closed temperature control pipe system in which the shell internal pipe of the temperature controlled unit and the temperature control unit are connected to each other, and the temperature of the medium is adjusted. In order to prevent the temperature of the molding material input part from exceeding a certain level, since it is a closed system, there is no medium in and out of the system, and zero emission can be achieved.
Has little adverse effect on the electric system of the molding machine

Further, in this temperature control system, since the air-cooled radiator is used as the heat exchanger for the medium, the environment is not polluted for the temperature control.

A temperature control system for a resin molding machine according to a second aspect is the temperature control system according to the first aspect,
An aqueous medium is used as the medium.

Here, the aqueous medium is a main component of water, and has the advantage that the pipeline system is a closed system and does not flow out to the outside, and in order to avoid the problems of rust and freezing that occur when only water is used, Addition of additives such as rust preventive and antifreeze.

Since this temperature control system employs an aqueous medium mainly containing water as a medium, it can be constructed at a low cost.
Further, it is possible to prevent the problem that the system does not operate due to rusting or freezing in the temperature control pipe system.

According to a third aspect of the present invention, there is provided a temperature control system for a resin molding machine according to the first or second aspect, wherein the temperature control unit is detachable from the resin molding machine. It is a molding die used.

In this temperature control system, the temperature controlled part is specifically a molding die, and particularly, the effects of claims 1 and 2 are exerted with respect to the molding die.

A temperature control system for a resin molding machine according to a fourth aspect is the temperature control system for a resin molding machine according to any one of the first to third aspects, wherein the temperature control system further comprises the temperature controlled system. It is characterized in that a secondary temperature control system in which a management section is a coil section of the reflux pump is incorporated.

This temperature control system also captures the coil portion of the reflux pump, which is included in the system itself and which is desired to avoid high temperature, as a target of temperature control, and this portion is also a closed secondary temperature control system. By applying
In addition to avoiding the breakdown of the reflux pump due to seizure of the coil, the system is closed.

[0035]

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

FIG. 1 is a schematic diagram showing the overall configuration of an example (parallel type) of the temperature control system according to the present invention.

The temperature control system 10 uses a molding die K as an example of a temperature controlled part of a resin molding machine (not shown), and keeps the temperature controlled part 1 (K) at a predetermined temperature. In order to achieve this, the temperature control unit 5 is provided, and the two are connected by a pipeline to form a closed or circulating temperature control pipeline system 6.

The temperature control section 5 is a medium W that recirculates when necessary.
For controlling the temperature of the heat exchanger 2, the reflux pump 3 for refluxing the medium W in the temperature control pipe system 6, the medium tank 4 for storing the refluxing medium W, and the coil portion 3a of the reflux pump 3. A secondary temperature control system 7 is provided.

In this example, the heat exchanger 2 is of an air-cooled radiator type for controlling the coolant temperature of an automobile,
It is provided with a fan 2a that blows the atmosphere for temperature control, and a radiator 2b that receives the air blown from the fan 2a and passes the medium W through it to control the temperature of the medium W.

This heat exchanger 2 is not provided in series with the pipeline 6d of the temperature control pipeline system 6, but is provided in series with the bypass pipeline 2c which bypass-connects the pipeline 6d and the pipeline. Has been. That is, the pipes 6d of the temperature control pipe system 6 are provided in parallel, which is called a parallel type.

The heat exchanger 2 basically plays a role of cooling for lowering the temperature of the medium W which has become high temperature. However, when the operation of the molding machine is started, the heat of the mold K is reduced. When the temperature is low, the fan 2a is not rotated and the air flow to the radiator 2b is stopped, so that the temperature of the medium W is allowed to rise to a certain temperature, that is, the temperature is allowed to rise.

The reflux pump 3 is the reflux pump 103 shown in FIG.
The same pressure gauge 3a and control sensor 3b are provided.

The medium tank 4 includes a tank body 4a for storing the medium W, a heater 4b for heating the medium W stored in the tank body 4a, a medium replenishing port 4c for replenishing the medium W to the tank body 4a, and a tank body. A drain 4d that discharges the medium W remaining in 4a and a liquid level gauge 4e that is attached to the medium supply port 4c and measures the liquid level of the medium W stored in the tank 4, and the excess medium W is discharged to the overflow destination OF. The discharge pipe line 4f is provided.

The discharge conduit 4f is for overflowing the overflowing medium only when the medium is erroneously supplied excessively at the time of replenishing the medium, and is not always discharged.

The temperature control conduit system 6 similarly controls each element of the temperature control conduit system 106 of the temperature control system 110 of FIG. 5 in which the molding die K is subjected to temperature control, the conduit 106c, and the conduit 10.
6d, a pipeline 1 branched and provided with a medium feed valve 106e
06f, 106g in the shell line, and return valve 106i in each
106h, conduit 106j, conduit 106k provided with
Similar to the pressure adjusting valve 106l, a pipeline 6c, a pipeline 6d, a pipeline 6f in which a medium feeding valve 6e is provided, a shell pipeline 6g,
The pipe 6h, the pipe 6j, the pipe 6k, and the pressure adjusting valve 6l, each of which is provided with a return valve 6i, have the same function.

However, in FIG. 5, the temperature control pipe line system 106 is used.
Then, the medium W is supplied from the medium source WI at any time for cooling, and if the excess medium W after use is discharged by overflow from the discharge conduit 104c to the discharge destination WO, this temperature control conduit system is used. In No. 6, the medium W for the purpose of cooling is neither introduced nor discharged.

The temperature control conduit system 6 is further provided with a conduit 6
j is equipped with a control sensor 6m for measuring the temperature of the medium W passing through this pipe 6j.
The temperature of the medium W is also adjusted by using the temperature of the medium W measured in the above step.

The secondary temperature control system 7 is the parent system 1
It has the same configuration as that of 0, and is incorporated in this system 10 to form a small loop of the temperature control pipe system, and is provided with the same heat exchanger 2A, reflux pump 7a, and medium tank 7b as in this system 10. The coil portion 3a of the reflux pump 3 to be temperature-controlled is connected to the coil portion 3a through the pipe line 7c to form a closed system or a circulation system.

The medium tank 7b includes the medium tank 7b.
Level gauge 7b for measuring the liquid level of the medium W stored in
a is provided. The medium tank 7b serves as a reservoir for smooth circulation of the circulating medium W, and at the same time, is a liquid for determining whether or not the medium W is present in the closed system in an amount sufficient for circulation. It is also for providing an area meter 4ba.

Such a function as a place for measuring the accumulation and the amount of the medium W is generally provided in a radiator equipped with a liquid level gauge for automobiles, but the heat exchange used here. If the container 2A is a radiator of this type, the medium tank 7b is not always essential.

With this structure, the temperature control system 10 circulates the medium W in the temperature control pipeline system 6, and in the shell inner pipeline 6g of the mold 1 (K), the heated mold K is used. The heat exchanger 2 of the temperature control unit 5 radiates the heat to the atmosphere to keep the temperature of the mold K at a constant temperature. Since it is a system, no medium goes in and out of the system, zero emission can be achieved, and there is little adverse effect on the electrical system.

Further, in the heat exchanger 2, since the atmosphere is used as the cooling means for the medium W, the problem of environmental pollution does not occur.

On the other hand, when the temperature of the mold K becomes lower than the predetermined temperature, the heater 4 provided in the medium tank 4 is used.
The temperature of the mold K may be raised by heating the medium W by b. In other words, the temperature adjusting unit 5 has not only the function of cooling the mold K but also the function of heating it.

Similarly, the secondary temperature control system 7 has the above-mentioned configuration, like the present system 10, to prevent the coil portion 3a of the reflux pump 3 from being heated to a high temperature and to prevent the reflux pump 3 from being burned. In addition to avoiding breakdowns, the system is closed.

Here, the medium is an aqueous medium, that is,
While using water as the main component, taking advantage of the fact that the pipeline system is a closed system and does not flow to the outside, in order to avoid the problems of rust and freezing that occur when only water is used, additives such as rust preventives and antifreeze liquids are added. Since the added one is used, it is possible to prevent rust in the temperature control pipe system and the problem that the system does not operate due to freezing.
In addition, since an aqueous medium mainly containing water is adopted as the medium, it can be constructed at low cost.

As the heat exchanger, not only the radiator type illustrated here but also a Peltier element for generating heat transfer by supplied electricity can be used,
Even in that case, since a medium such as CFC is not used and the medium does not enter and leave the environment, an environment-friendly system can be realized.

The Peltier element, which originally causes heat transfer at a portion where there is no thermal gradient, is used as a molding material charging portion in a heating atmosphere so that a part of the Peltier element becomes a lower temperature portion. When used to do so, by using a Peltier element in the direction of utilizing this thermal gradient,
It is possible to generate heat transfer more efficiently.

As another example of the heat exchanger, a compression / expansion unit composed of a compressor, a condenser, and a vaporizer may be used, and in this case, the medium goes in and out of the environment. Since it does not exist, it can be an environment-friendly system.

Further, in the present system 10, the heat exchanger 2
Are pipes 6d, 6f, 6g between the temperature control unit 5 and the mold K,
6h and 6m are provided in the bypass pipelines 2c arranged in parallel, and the medium W flowing through these bypass pipelines 6d, 6f, 6g, 6h, and 6m is not for total temperature control, but to Bypassing only a part and cooling only it, or leaving the temperature rise. This method is highly useful as a simple temperature control system.

In order to adjust the flow rate ratio between the bypass pipe 2c and the pipe 6d to the mold K, etc.,
A flow rate control valve may be provided in either or both of the bypass conduit 2c and the conduit 6d to the mold K.

In this way, by adjusting the flow rate,
Wider range of temperature control and increased system flexibility.

FIG. 2 shows the appearance of the temperature control section of FIG. 1 in detail. (A) is a front view with the cover removed, (b)
Similarly, it is a side view of the state which removed the cover.

In this temperature controller 5, the heat exchangers 2 and 2A, the pipe 2c, the reflux pump 3, the medium tank 4, which have already been described,
The heater 4b, the conduits 6d and 6j, the medium tank 7b of the secondary temperature control system 7, and the conduit 7c of the circulation system are shown, and the relative installation positional relationship in these actual devices is well understood.

Although not shown in FIG. 1, reference numeral 9 is an expansion tank for dealing with expansion of the medium W due to temperature rise, and is provided in the medium tank 4. For example, in the case of an oil-based medium W, which is a medium W used for controlling the temperature of a mold (specifically, "Duffney Thermic Oil 32" (trade name)), when the medium temperature rises from 0 ° C to 250 ° C, Since the volume expands by a factor of about 1.3, such an expansion tank is required to prevent damage to the system due to this expansion.

Reference numeral 5c is a cover for covering the reflux pump 3, the medium tank 4 and the like built in the temperature control unit 5, which is indicated by a two-dot chain line of virtual lines.

From this figure, it is possible to understand the installation positional relationship of the above-mentioned built-in parts.

Further, in this figure, the radiator type heat exchangers 2 and 2A are externally attached to the apparatus box body of the temperature control section 5, but this heat exchanger is built in the box body. You may do it. However, in that case, it is necessary to pay attention so that the air is circulated well between the cover and the inside.

FIG. 3 is an overall configuration diagram showing another example (series type) of the temperature control system according to the present invention.

The temperature control system 10A is different from the system 10 shown in FIG. 1 in that the heat exchanger 2B of the temperature control section 5A is provided in the pipe line 6d in series instead of in parallel.

In this way, the entire amount of the medium W flowing back through the temperature control pipe system 6 will pass through the heat exchanger 2B, so it is necessary to make the capacity of the heat exchanger 2B larger. However, it is possible to cope with a larger temperature change of the mold K.

FIG. 4 is an overall configuration diagram showing another example (indirect type) of the temperature control system according to the present invention.

The temperature control system 10B is a closed system,
The feature of the present invention that a radiator type heat exchanger is used as a circulation pipe line system is applied to the conventional indirect temperature control system described in FIG.

That is, in the temperature adjusting system 10B, the medium tank 4A is of a type that indirectly adjusts the temperature of the medium similarly to the medium tank 204 of FIG. 6, and further, a sub-temperature adjusting system that adjusts the temperature of the medium tank 4A. 8 is also a closed system and a circulatory system.

The sub-temperature control system 8 cools the medium tank 4A, the medium tank 4B for storing the medium WB for cooling, the reflux pump 3A for circulating the medium WB in the system 8, and the medium WB. And a radiator-type heat exchanger 2C for
8b, 8c, 8d and 8e are connected so as to form a circulation system. In this, the conduit 8d penetrates through the medium WA for the system stored in the medium tank 4A, and serves as a heat exchange conduit 8d for cooling (or heating in some cases) the medium WA. It is functioning.

The medium tank 4A is different from the medium tank 4 in that the medium tank 4A is provided with the heat exchange pipe 8d.
B is different from the medium tank 4 in that the medium WB for indirect cooling or temperature control is stored, but the other points are the same.

As described above, according to the temperature control system 10B, as in the system 210 of FIG. 6, the medium is controlled by the indirect cooling by the low temperature medium (for example, water) supplied from the medium source WB and the heating by the heater 4b. By adjusting the temperature of the medium WA in the tank 4A, the temperature of the medium passing through the in-shell pipe line 6g of the forming die K can be adjusted to maintain the forming die K at a predetermined temperature. Since the sub-temperature control system 8 is also closed and has a circulation system, no medium goes in or out of the system, zero emission can be achieved, and adverse effects on the electrical system are small.

Furthermore, in this system 10B, the medium WA for the temperature-controlled part, which is the part to be temperature-controlled, and the medium WB for the indirect temperature control can be made different, and therefore, the purpose and usage conditions of each can be different. The medium can be a medium suitable for the system, and the flexibility of the system is increased.

For example, as the medium WA, a mineral oil or a synthetic oil, for example, a daphne thermic oil 32 is used.
An oil-based medium such as (trade name) may be used, and the above-described aqueous medium may be used as the medium WB. The oily medium can also be used in direct form, such as the system 10 of FIG.

Here, the closed system 7,
As an example of the temperature-controlled part according to 8, 10, the molding die 1
Although only (K) has been described, this system can be applied to a molding material charging unit and the like, and exhibits similar effects.

[0080]

According to the temperature control system for a resin molding machine according to the first aspect of the present invention, a closed temperature control pipe line system in which the shell internal pipe and the temperature control unit of the temperature controlled unit are connected to each other is provided. By recirculating the medium and adjusting the temperature of this medium, the temperature of the molding material input part does not exceed a certain level.Since it is a closed system, there is no medium going in and out of the system, and zero emission is achieved. It can be achieved, and there is little adverse effect on the electric system of the molding machine.

Further, in this temperature control system, since the air-cooled radiator is used as the heat exchanger for the medium, the environment is not polluted for the temperature control.

According to the temperature control system of the resin molding machine of the second aspect, in addition to the effect of the first aspect, since an aqueous medium mainly containing water is used as the medium, it can be constructed at a low cost. Further, it is possible to prevent the problem that the system does not operate due to rusting or freezing in the temperature control pipe system.

According to the temperature control system of the resin molding machine described in claim 3, in addition to the effect of claim 1 or 2, the temperature controlled part is specifically a molding die, Particularly, with respect to the molding die, the effects of the above-mentioned claims 1 to 2 are exhibited.

In addition to the effect of any one of claims 1 to 3, the temperature control system of the resin molding machine according to claim 4 is included in the system itself as a target of temperature control, and it is desired to avoid high temperature. By catching the coil part of the reflux pump and applying a closed secondary temperature control system to this part as well, it is possible to avoid the breakdown of the reflux pump due to seizure of this coil part and to secure the system closure. ing.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an overall configuration of an example (parallel type) of a temperature control system according to the present invention.

FIG. 2 is a detailed view showing the appearance of the temperature control section of FIG.
(A) is a rear view with the cover removed, (b) is a side view with the cover similarly removed

FIG. 3 is an overall configuration diagram showing another example (indirect type) of the temperature control system according to the present invention.

FIG. 4 is an overall configuration diagram showing another example (series type) of the temperature control system according to the present invention.

FIG. 5 is an overall configuration diagram showing an example of a conventional temperature control system for a molding die.

FIG. 6 is an overall configuration diagram showing another example of a conventional temperature control system for a molding die.

[Explanation of symbols]

1 mold 2-2B heat exchanger (radiator) 3,3A reflux pump 4-4A medium tank 5-5A Temperature control part 6 Temperature control line system 6g inner shell conduit 10-10B Temperature control system K molding die

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Nobuki Okamoto             2-51-13 Ikebukuro, Toshima-ku, Tokyo Stock market             Company Matsui Manufacturing Tokyo Branch F-term (reference) 4F202 AK02 AK13 AR06 CA11 CN01                       CN05 CN13 CN14 CN24                 4F206 AK02 AK13 AR061 AR064                       JA07 JL02 JQ48 JQ81

Claims (4)

[Claims] 1. A resin molding machine, comprising: a temperature control system for maintaining a temperature controlled part, which is important for temperature control for resin molding, at a predetermined temperature. A temperature control pipe system is constructed by connecting a pipe passage through the shell, a temperature control unit having a reflux pump, a medium tank and a heat exchanger to form a closed temperature control pipe system. Using a radiator, the temperature of the medium to be controlled is maintained at a predetermined temperature by adjusting the temperature of the medium by the heat exchanger while refluxing the medium in the temperature control pipe system by the reflux pump. A temperature control system for a resin molding machine, which is characterized in that 2. The temperature control system for a resin molding machine according to claim 1, wherein an aqueous medium is used as the medium. 3. The temperature control system for a resin molding machine according to claim 1, wherein the temperature controlled part is a molding die which is detachably attached to the resin molding machine. A characteristic temperature control system for resin molding machines. 4. A temperature control system for a resin molding machine according to claim 1, wherein the temperature control system further includes the temperature controlled part as a coil part of the reflux pump. A temperature control system for a resin molding machine characterized by incorporating a temperature control system.