KR20150092835A - Mold using a High Frequency Induction Heater Heating and Cooling Control System - Google Patents

Abstract

The present invention relates to a forming injection mold heating and a cooling control system and, more specifically, to an apparatus for injection molding which heats water using a high frequency induction heater, heats a mold using steam generated as a result, controls cooling water by a self-control system and cools a mold using the cooling water. The present invention uses heat sources by installing a heating and pressure tank of two-stage structure with a high frequency induction heater, uses dry steam by heating steam generated as a result in a heating and pressure tank at a set temperature and pressure by installing a dry heater in a storage pressure tank and by eliminating a certain amount of moisture from steam simultaneously, saves time by rapid rotation of cooling water for mold cooling through a pressurization pump at a certain pressure in an inner mold, enables to increase temperature of the mold quickly when heating the next time and to prevent damage to the mold caused by residual water through a process of heating air supplied from an air intensifier pump after cooling in an air heating tank and eliminating residual water thereby left inside the mold, and also heats rapidly an inner mold through on/off operation of an outlet valve by steam emitted after heating a mold.

Description

Technical Field The present invention relates to a mold heating and cooling control system using a high frequency induction heater,

The present invention relates to a molding injection mold heating and cooling control system, and more particularly, to a molding injection mold heating and cooling control system, in which water is heated to generate steam by using a high frequency induction heater, the mold is heated using the steam, And cooling the mold by using the cooling water.

In molding a plastic resin (ABS, PP, PCS, etc.) used for plastic molding injection molding, in order to form the appearance of the product, the temperature of the mold must be controlled and steam for heating the mold and mold There is a need for a mold heating and cooling control system in which cooling water is supplied for a predetermined time or temperature to heat and cool the mold.

In order to heat the mold, steam is widely used. To this end, a device for heating the mold indirectly by supplying steam into the mold and generating steam in the gas or oil boiler system has been popularized.

However, in such a configuration, the system needs to have a boiler system separately, and the scale of the auxiliary facilities (piping and control device for supplying steam) must be excessively increased, and even if it is desired to perform injection using steam at an injection plant at a small scale, I had to be tough.

Therefore, in order to reduce the investment cost of the facility, a mold heating device for supplying water directly to the mold by instantaneous heating has been supplied to the market.

However, the system using steam has to be equipped with a heating unit for heating water and a control unit for controlling the generated steam, so that the size of the apparatus and the development cost have to be increased.

On the other hand, it was attempted to develop water by heating using a steam as a heating medium and an electric heating heater. However, without a water purification system, a heating part (an electrothermal heater ) Is damaged, it can be repaired after decomposing the heating part and the heater. At this time, the developed electric heater is difficult to be developed due to the problem that the volume is expanded due to breakage and the decomposition is difficult from the input part.

Therefore, the water was heated in a shorter time with less electric energy to generate steam, the steam was controlled to heat the mold, and the self cooling water circulation system was developed.

Here, a device capable of replacing an electrothermal heater, which is the most important steam generating device, was required, and a steam was generated by using a high frequency induction heater, which had been used for heat treatment or melting metal, as a steam generating device.

This high-frequency induction heater is capable of generating heat faster than existing heaters with a small electricity quantity, has a lower breakage rate than conventional heaters, and does not heat water directly, so it can be used regardless of water characteristics (scale phenomenon) .

Conventionally, the steam generator is provided to generate steam by heating the water directly or indirectly by using an electric heater and a band heater.

Problems with the heating method using the electrothermal heater or the band heater require a large amount of electricity to be used, and the number of times of use of the equipment is decreased according to the water quality and repair problems are frequently caused by heater breakage.

In order to generate a large amount of steam, there is a problem that the size of the equipment must be increased due to the increase in the capacity of the electric heater or the band heater. Therefore, there is a problem that the problem of mobility occurs. Therefore, a substitute heat- There is a limit to the amount of steam that can be generated by a single high frequency induction heater. Therefore, there is a need for a method capable of increasing space efficiency and generating steam and generating steam with less electricity than existing equipment.

Accordingly, it is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a water treatment apparatus and a water treatment method which are capable of generating water by heating water to be supplied without affecting scale (impurities) Equipment), the heating pressure vessel is composed of a two-stage loading system (one at the top and one at the bottom), and a heating unit is constructed by pipes 80A and 100A between 150 and 200 mm at the bottom of the heating pressure vessel, And a buffer pressure vessel as a storage pressure vessel for storing steam generated by heating and producing the pressure vessel.

In addition, since it develops a method that can reduce breakdown of heating heater due to shortage of water supply and drastically reduce electricity consumption (electricity cost) used for heating, it uses high frequency induction heater .

In addition, there is a cooling pressurizing pump to effectively cool the mold, and an air purge which can be heated faster by heating the next steam to effectively remove the residual water, This system also features a method of re-using the steam as a heat source by supplying the auxiliary steam to the auxiliary water tank again after the mold heating and the function of discharging the remaining water in the mold through the air outlet using the air supply.

In the present invention, by providing two high-frequency induction heaters in two stages, it is possible not only to provide a sufficient amount of steam but also to be able to receive steam at a desired temperature and pressure.

Also, there is a problem that the heater takes a long time to heat up to the set temperature and breaks the electric heater and consumes a lot of electricity to be used for heating the heater.

In order to solve this problem, the steam generating heat source is improved by using a high frequency induction heater so that the steam can be supplied as much as the desired amount of electricity.

In addition, by controlling the amount of steam emitted by heating the mold, the mold can be heated more quickly, and a high-pressure valve is installed on the discharge side to reduce the steam consumption, In order to improve the mold cooling effect, a pressurizing pump is installed in the equipment to supply the cooling water to the mold by pressurizing the cooling water supplied to the mold to improve the cooling effect than the existing equipment. After the cooling, The function of heating the mold at the same time as the heat of the heat at the same time as the removal of the residual heat is enhanced.

The effect of this invention is that it can use the equipment without being affected by electric heater breakage due to scales (impurities) in the supply water or electricity usage at all. By constructing a system that can be remotely controlled, the Android system can be used for mobile phones, Pads, etc., can be remotely controlled within the WiFi (wireless Internet), enabling the device to be controlled even in the office instead of on the spot.

In addition, compared to the amount of electricity used for heating existing equipment, this equipment has an electric saving effect of about 70% or more, and it is an invention having many effects such as reduction of injection defect rate for temperature and stabilization of quality by injecting with stable quality in molding injection.

1 is a perspective view of a mold heating and cooling control system using a high frequency induction heater to which the technique of the present invention is applied.
FIG. 2 is a schematic view illustrating a heating pressure tank and a storage pressure tank, which are the core of the mold heating and cooling control system using the applied high frequency induction heating apparatus of the present invention.
3 is a sectional view of a heating pressure tank and a storage pressure tank of a mold heating and cooling control system using a high frequency induction heater to which the technique of the present invention is applied.
FIG. 4 is a schematic view of a supplementary water tank of a mold heating and cooling control system using a high frequency induction heater to which the technique of the present invention is applied, and a water heating system using the remaining amount of mold steam.
FIG. 5 is a block diagram of a high-pressure heating air tank of a mold heating and cooling control system using a high-frequency induction heater to which the technique of the present invention is applied and a configuration diagram of air purge
6 is an assembled photo of the attachment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a mold heating and cooling control system using a high frequency induction heater to which the technique of the present invention is applied.

FIG. 2 is a schematic view illustrating a heating pressure tank and a storage pressure tank, which are the core of the mold heating and cooling control system using the applied high frequency induction heater,

3 is a sectional view of a heating pressure tank and a storage pressure tank of a mold heating and cooling control system using a high frequency induction heater to which the technique of the present invention is applied,

FIG. 4 is a block diagram of an auxiliary water tank of a mold heating and cooling control system using a high frequency induction heater to which the technique of the present invention is applied,

FIG. 5 is a block diagram of a high-pressure heating air tank and a configuration of air purge (residual water removal function in a mold) of a mold heating and cooling control system using a high frequency induction heater to which the technique of the present invention is applied;

Fig. 6 will be described together with an attached photograph of the assembly.

A mold heating and cooling control system A000 using a frequency induction heater to which the technique of the present invention is applied includes a high frequency induction heater H001, two heating pressure tanks T001, a storage pressure tank T002, an auxiliary water tank T003 ), Air heating tank (T004), auxiliary air tank (T005), cooling water pressurization pump (P001), heating pressure tank water replenishment pump 2 (P002), storage pressure tank heating heater (H002) (C001), 5 pressure sensors (C002), 5 heater for air heating (H003), heater for auxiliary water tank (H004), 6 water level sensor (C002), distributor for high frequency induction heater water supply (D001) (V002), Mold Coolant Circulation Valve (V003), Mold Coolant Supply Valve (V004), Mold Air Supply Valve (V003), Mold Coolant Supply Valve (V004), Mold Air Supply Valve Valve (V005), Heating pressure tank Water supply valve (V006) 2, External steam use valve (V007), Auxiliary water tank Water Connect the supply valve (V008) with the E-mail connector and SUS tube piping.

The method of generating steam in the mold heating and cooling control system using the high frequency induction heater according to the present invention is as follows.

The high frequency induction heater H001 is mounted on the lower end of the heating pressure tank T001 in FIG. 2 and the water supplied to the heating pressure tank T001 is supplied to the heating pressure tank water storage layer pump P002 and the heating pressure tank water supply valve (V006), and the water level in the heating pressure tank (T001) is controlled by the water level sensor (C002).

The steam generated in the heating pressure tank (T001) is supplied to the storage pressure tank (T002) through the pipe and the dry heater (H002) for heating the storage pressure tank is pre-operated to heat the temperature in the tank to the set temperature, The supply of steam to the mold is maintained at a constant temperature and pressure while preventing the generation of water due to temperature inside the tank during the supply.

When supplying the steam to the mold, the operation of the valve for discharging the mold steam (V002) is operated by the ON and OFF times, thereby reducing the amount of steam used and rapidly raising the temperature in the mold.

4, the auxiliary water tank (T003) heats the steam discharged after the mold heating by the valve (V002) for discharging the mold steam through the circulation pipe installed in the auxiliary water tank, and the auxiliary water tank heater H004) to supply water to the heating pressure tank (T001) in the range of 60 to 80 占 폚 when supplying water to the heating pressure tank (T001).

As described above, the air heating tank T004 shown in FIG. 5 circulates the air to the inside of the mold and the piping at a predetermined temperature using the heater H004 for heating the auxiliary water tank to remove residual water.

By removing the residual water, the mold is rapidly heated when the mold is heated, and the mold can be prevented from being rusted due to residual mold water.

Figure 7 is a photograph of a device actually produced.

The present invention can prevent defects in the gloss part in advance, especially when high-gloss injection is performed, by enabling injection at a stable quality in molding injection molding. The use of electricity is remarkably reduced compared with existing equipment, The mold can be prevented from being rusted in advance through the residual water removing function, thereby extending the life of the mold.

H001: High frequency induction heater
H002: Dry heater for storage pressure tank heating
H003: Heater for air heating
H004: Heater for auxiliary water tank
C001: Temperature sensor
C002: Pressure sensor
C003: Water level sensor
T001: Heating pressure tank
T002: Storage pressure tank
T003: auxiliary water tank
T004: Air heating tank
T005: auxiliary air tank
P001: Pump for pressurizing cooling water,
P002: Heating pressure tank water replenishment pump
P003: Pump for supply of distributor for high frequency induction heater water supply
P004: Air booster pump
D001: Distributor for high frequency induction heater water supply
D002: Distributor for high frequency induction heater water discharge
V001: Valve for mold steam supply
V002: Valve for mold vapor release
V003: Mold cooling water circulation valve
V004: Mold cooling water supply valve
V005: Valve for supplying mold air
V006: Heating pressure tank Water supply valve
V007: Valve for external steam use
V008: Water supply valve for auxiliary water tank
V009: Valve for mold cooling water discharge

Claims (5)

Heated pressure tank (T001) Two-stage structure and heating pressure tank The bottom pipe 100A is heated to 150 ~ 200mm with a copper bending coil with round bending coil and heated steam to the storage pressure tank (T002) After the steam is stored, it is fed to the mold (M003) by adjusting the set temperature and pressure by using the dry heater for the storage pressure tank heating. The steam generating heat source is used by using the high frequency induction heater (H001) The water is heated in the auxiliary water tank (T003) by using the supply pump (P001), the mold (M003), the air heating tank (T004) for removing residual water and the steam discharged after heating the mold (M003) ), And a function of rapidly heating the mold (M003) while reducing the amount of steam to be supplied by heating, turning on and off using a valve (V002) Mold heating and cooling control system. The method of claim 1,
The heating pressure tank (T001) is made of a metal material pipe, the upper part of which has a pipe size of 250 A and the lower part which has a pipe size of 100 A, is welded in a two-end structure.
The storage pressure tank (T002) is manufactured by welding using a metal material pipe. The system is a mold heating and cooling control system using a high frequency induction heater. The method of claim 1,
And a high frequency induction heater (H001) for heating the heating pressure tank (T002) to generate steam by using the high frequency induction heater (H001). The method of claim 1,
The air supplied to the air heating tank T004 is supplied to the air heating tank T004 by using the air booster pump and the air supplied to the air heating tank T004 is supplied to the air heating tank T004 by using the air heating heater H003. And a function of removing the residual water by supplying the high-temperature high-pressure air in the mold (M003) when removing the residual water in the mold (M003) by heating to a desired set temperature. The method of claim 1,
The mold vapor discharge valve V002 is turned on or off for the valve for discharging the mold vapor during the time set when the steam is supplied from the storage pressure tank T002 to the mold M003.
When supplying the steam to the mold (M003), turn off the valve (V002) to discharge the steam during the set time. When the set time has elapsed, turn off the valve (V002) Thereby rapidly raising the internal temperature of the mold M003.
This is a mold heating and cooling control system using a high frequency induction heater, which is characterized by reducing the amount of steam supplied through the function to reduce the heat source operation time used to generate steam, thereby reducing the amount of electricity used, thereby reducing cost.

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