KR100698965B1 - Thermal Control Device of Mold - Google Patents

Abstract

A temperature control device of a mold is provided to improve productivity by forming a supplying filter on a supply pipe so as to remove foreign substances from circulation water. In a temperature control device(100) of a mold, a circulation water supply unit(110) supplies circulation water. A steam supplying unit(120) generates steam of high pressure and temperature by heating the circulation water supplied from the circulation water supply unit to supply the generated steam. A supply control unit(130) supplies the steam and cooling water to a mold(1) with controlling the supply of the steam from the steam supply unit and the cooling water from a cooling supply pipe(133). A recovery unit(140) recovers the steam and the cooling water supplied from the supply control unit. The circulation water supply unit includes a supply pipe(111), a circulation tank provided with a drain unit(114), and a water supply pump(116) provided with a circulation check valve(117) to prevent a reverse flow.

Description

Temperature Control Device of Mold {Thermal Control Device of Mold}

1 is a block diagram showing a mold temperature control apparatus of the prior art.

Figure 2 is a block diagram showing a mold temperature control system of the prior art.

3 is a block diagram showing a temperature control apparatus of a mold according to the present invention.

Figure 4 is a block diagram showing another embodiment of the temperature control device of the mold according to the present invention.

* Explanation of symbols for main parts of drawings *

1: mold 2: tube

100: temperature control device 110: circulating water supply unit

111: supply pipe 112: supply filter

113: circulation tank 114: drain portion

115: water supply unit 116: water supply pump

117: circulation check valve 118: overwater prevention

119: air vent 120: steam supply

121: steam generating unit 122: preheating unit

123: preheating coil 124: water supply pipe

125: heater 126: safety valve

127: pressure switch 128: pressure gauge

129: temperature sensor 130: supply control unit

131: supply control valve 132: control supply pipe

133: cooling supply pipe 134: cooling control valve

135: cooling check valve 136: mold supply pipe

137: temperature sensor 140: recovery unit

141: recovery pipe 142: recovery control valve

143: circulation supply pipe 144: discharge pipe

151 steam supply pipe 152 gas supply pipe

153: pressure unit 154: mixing unit

155: mixing supply pipe 156: pressure gauge

157: gas discharge unit

The present invention relates to a temperature control apparatus of a mold.

Generally, a metal pattern refers to a metal mold, and a mold made of iron or other metal used to make a casting, The metal molds are used for molding plastics and the like, and metal molds are used for sandwiching thin metal sheets or plastic plates between upper and lower molds and compressing them into a predetermined shape.

In the case of casting molds, the higher the melting point of the poured metal or the higher the pressure applied to the molten metal at the time of pouring, the stronger the mold is required. Normally, ordinary steel is used as the die casting, but heat resistant steel and tool steel are used as necessary. In the mold for plastic molding, hardened steel is used when the molding pressure is high, and copper alloy is used when the pressure is low. In recent years, a mold of copper beryllium is used for molding precise shapes of plastics. Such a molding die is chrome-plated on the surface to prevent the edges from quickly becoming worn out.

As described above, the mold used to mold the metal or plastic has a temperature that is too low compared to the molten casting at the beginning of the molding, and when the casting comes into contact, external cracks occur due to the low temperature, thereby forming a defective product. When the mold is preheated, the molten casting is raised to the temperature at which the molten casting is molded in good quality and accurate shape, and the molten casting is continuously supplied to form the mold. When the mold is formed into the mold, the internal temperature of the mold is continuously raised to overheat the high temperature above the appropriate temperature. As the molding is not performed properly, regular cooling should be performed every cycle.

In this way, in order to preheat and cool the mold, the mold is provided with a heating wire to preheat the temperature and used in an air-cooled form for cooling in the air. Since the temperature of the mold is not accurately controlled, defective products are frequently generated, which causes a problem in that the productivity is lowered.

Thus, a device for controlling the mold temperature within an appropriate temperature range by making a fluid passage inside the mold to flow hot or cold water is disclosed in Japanese Patent Application Laid-Open No. 63-128911, which is described below with reference to FIG.

A mold temperature control system including a cooler (11), a pump (12), a heater (14), a thermometer (21), and a controller (30) is disclosed. When a mold temperature is measured by a thermometer, hot water flows, When the temperature is high, cold water flows to control the mold temperature. That is, when the mold is to be cooled, the operation of the heater 14 is stopped and the cooler 11 is operated to circulate water. When the mold is to be heated, the cooler 11 is stopped and the heater 14 is operated. The circulation of the water is controlled by opening and closing the solenoid valves with the controller 30 according to the mold temperature measured by the thermometer 21 to circulate the water.

The temperature control apparatus of the mold of the prior art as described above has a disadvantage in that the heat exchange rate is slow, the molding cycle is long, and the consumption of hot water or cold water is large and energy consumption is high.

Thus, Korean Patent Registration No. 10-0470835 for increasing the thermal efficiency while reducing the amount of water is disclosed, referring to Figure 2 as follows.

It consists of a cooler 11, an auxiliary tank 13, a circulation pump 12b, a heater 14, an expansion rubber hose 15, a mold 20, a temperature sensor 21 and a controller 30. When heating, the hot water circulates in the closed loop leading to the auxiliary tank, the circulation pump, the heater, the expansion rubber hose, and the mold, and when the mold is cooled, the cold water is the cooler, the auxiliary tank, the circulation pump, and the heater (not operated). Characterized in that for circulating the closed loop leading to the expansion rubber hose, the mold.

As described above, the mold temperature control system of the prior art is formed to circulate the closed loop to supply cold water and hot water, so as to significantly reduce the amount of hot water and cold water used, but is provided separately for each mold to supply hot water and cold water. As a result, there was a problem in that the cost of the facility is increased and the cost of the facility is increased.

In addition, the mold temperature control system of the prior art has to heat the instantaneously according to the temperature of the mold in order to heat to a constant temperature with a heater in order to heat hot water, there is a problem that heat loss occurs and the thermal efficiency is lowered.

In addition, the mold temperature control system of the prior art does not accurately control the temperature of the hot water as the fluid, and preheats the mold by supplying the hot water. This difficulty is difficult to maintain the accurate temperature, the casting failure occurs, the quality of the product is deteriorated, there was a problem that the productivity is lowered.

In addition, the mold temperature control system of the prior art stores the hot water for exchanging heat to preheat the mold in a state in which it is heated in a predetermined amount or more depending on the size of the mold, and then supplied according to the mold temperature. Since it must be secured, there is a problem that it is impossible to miniaturize the equipment to have a large equipment.

In order to solve the problem, the main object of the present invention is to supply a high-temperature, high-pressure steam while preheating the mold while controlling the temperature according to the temperature to quickly increase the temperature of the mold and adjust the amount of steam to the optimum temperature As it improves the quality of the castings produced by the mold and reduces the production cost as the facility for generating and storing steam, which is a gas, is reduced.

As such, the temperature control apparatus of the mold of the present invention devised to achieve the object forms a supply pipe to supply the circulating water in a state in which impurities are removed by a supply filter, and has a drain portion at one side to store the circulating water supplied to the supply pipe. A circulating water supply unit which forms a circulation tank and forms a water supply pump having a circulation check valve for preventing a back flow to the water supply portion formed on the other side to supply the circulation water of the circulation tank to supply the circulation water, and the circulation water The steam generator is provided with a heater therein to generate steam by supplying the circulating water supplied by the feed water pump to the water supply pipe, and forms a steam generator for heating the steam, and measures a temperature inside the steam generator. A steam supply unit for forming and supplying steam and supplying steam supplied from the steam generator of the steam supply unit to air; It is formed to supply and control with a supply control valve equipped with a control supply pipe, and the cold water supply pipe connected to the supply pipe of the circulating water supply unit to supply the cold water to the cooling control valve equipped with a cooling check valve to prevent the reverse flow of cold water And a supply control unit configured to supply steam and cold water of the supply control valve and the cooling control valve to a mold supply pipe connected to the mold to supply the mold with a temperature sensor, and the supply control unit supplied to the mold. A return pipe for collecting steam and cooling water is formed on one side of the mold, a return control valve for controlling the recovery of the circulated water recovered in the return pipe, and a circulation supply pipe for circulating the recovery controlled by the return control valve to the circulation tank. It is characterized by comprising a recovery unit formed with.

In addition, the circulating water supply unit is configured to form an air vent to remove the internal air on the upper portion of the circulation tank, and to form an overwater prevention unit to prevent the overwater to prevent the inflow of the circulation tank and discharge the supercharged circulating water It features.

The steam supply unit includes a pressure gauge displaying a pressure on an upper portion of the steam generator to form a pressure switch to control the pressure, and a steam is generated by forming a safety valve that is discharged when the pressure is elevated to the upper side of the steam generator. It is characterized in that it is configured to adjust the pressure of the negative.

In addition, the steam supply unit forms a preheating unit for dissipating the heat of the heater to the outside of the lower portion of the steam generating unit for generating steam, and preheating the circulating water supplied to the circulation water supply unit in the form of a coil to the outside of the preheating unit It is characterized in that the preheating coil is formed so as to expand and supply the contact area to preheat the circulating water to supply to the water supply pipe.

In addition, the steam generated from the steam supply unit to supply the steam supply pipe and supply the gas to the gas supply pipe to form a mixing unit for mixing the steam and gas, forming a pressurizing unit for pressurizing the mixed steam and gas to one side of the mixing unit, Forming a mixing supply pipe for supplying steam and gas pressurized in the mixing section to the mold while checking the pressure with a pressure gauge, and forming a gas discharge section for discharging the steam and gas supplied to one side of the mold to mix the steam and gas It further comprises a gas supply unit for supplying to.

In addition, the supply control unit forms a plurality of mold supply pipes connected to the mold with steam and cold water of the supply control valve and the cooling control valve by supplying steam and cold water to a mold having a plurality of temperature sensors, and supplying a recovery tube for each mold. It is provided to recover the supplied steam and cold water, characterized in that configured to control the temperature in the plurality of molds.

As described above, a preferred embodiment of the apparatus for controlling temperature of a mold according to the present invention will be described with reference to the accompanying drawings.

First, in the drawings, the same components or parts are to be noted that the same reference numerals as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

3 is a configuration diagram showing a temperature control apparatus of a mold according to the present invention, Figure 4 is a configuration diagram showing another embodiment of the temperature control apparatus of the mold according to the present invention.

As shown in Figures 3 and 4, the temperature control apparatus 100 of the mold of the present invention heats the circulating water supply unit 110 for supplying the circulating water, and the circulated water supplied from the circulating water supply unit 110 To supply steam to the mold 1 while controlling the supply of steam supplied from the steam supply unit 120 and the steam supplied from the steam supply unit 120 and the cooling water supplied from the cooling supply pipe 133 It comprises a control unit 130 and a recovery unit 140 for recovering the steam and cooling water supplied from the supply control unit 130.

The circulating water supply unit 110 forms a supply pipe 111 to supply circulated water to the supply filter 112 in a state in which impurities are removed, and a drain part 114 is stored at one side to store the circulated water supplied to the supply pipe 111. Water supply pump 116 is provided with a circulation check valve 117 to prevent the back flow to the water supply unit 115 formed on the other side to form a circulation tank 113 having a) and to supply the circulation water of the circulation tank 113 ) Is configured to feed water with circulation.

Here, the circulation water supply unit 110 forms an air vent 119 for removing internal air on the upper portion of the circulation tank 113, and forms an overwater prevention unit 118 that prevents excessive water from the circulation tank 113. It is preferable to configure to prevent the inflow of air and to discharge the charged circulating water.

The steam supply unit 120 is provided with a heater 125 therein so as to generate steam by supplying the circulating water supplied to the water supply pump 116 of the circulating water supply unit 110 to the water supply pipe 124 is heated to become steam. The steam generator 121 is formed, and a temperature sensor 129 for measuring the temperature is formed at one side of the steam generator 121 to supply steam.

Here, the steam supply unit 120 is provided with a pressure gauge 128 to display the pressure on the upper portion of the steam generating unit 121 to form a pressure switch 127 to adjust the pressure, the upper portion of the steam generating unit 121 It is preferable to form a safety valve 126 to be discharged when the pressure is increased to one side to adjust the pressure of the steam generator 121.

In addition, the steam supply unit 120 forms a preheating unit 122 for dissipating the heat of the heater to the outside of one side of the steam generating unit 121 for generating steam, the coil form to the outside of the preheating unit 122 The preheating coil 123 is formed to supply the circulating water supplied to the water supply pump 116 to the circulating water supply unit 110 by expanding the contact area with the preheating unit 122 to preheat the circulating water to supply the water supply pipe 124. It is preferable to configure so as to supply.

The supply control unit 130 is configured to supply while controlling the supply control valve 131 provided with a control supply pipe 132 for controlling the supply of steam supplied from the steam generating unit 121 of the steam supply unit 120 with air. And a cooling supply valve 134 connected to a supply pipe 111 of the circulating water supply unit 110 to a cooling control valve 134 provided with a cooling check valve 135 to prevent a back flow. It is formed to supply while controlling, and the steam and cold water of the supply control valve 131 and the cooling control valve 134 is combined with the mold supply pipe 136 connected to the mold and supplied to the mold 1 having the temperature sensor 137. It is configured to form.

Here, the supply control unit 130 is provided with a plurality of temperature sensors 129 by forming a plurality of branch supply pipe 136 connected to the mold and steam and cold water of the supply control valve 131 and the cooling control valve 134. It is configured to supply the steam and cold water to the mold (1) and to provide a recovery pipe 141 for each mold (1) to recover the supplied steam and cold water to control the temperature of the plurality of mold (1) desirable.

The recovery unit 140 forms a recovery tube 141 on one side of the mold to recover steam and cooling water supplied to the mold from the supply control unit 130, and recovers the circulated water recovered from the recovery tube 141. A recovery control valve 142 for controlling is formed, and a circulation supply pipe 143 for circulating the recovery controlled by the recovery control valve 142 to the circulation tank 113 is configured.

Here, the steam generated from the steam supply unit 120 is supplied to the steam supply pipe 151 and the gas supply pipe 152 to form a mixing unit 154 for mixing steam and gas, the mixing unit 154 The pressurizing part 153 is formed to pressurize the mixed steam and gas to one side of the mixing supply pipe 155 for supplying the pressurized steam and gas from the mixing part 154 to the mold while checking the pressure with the pressure gauge 156. ) And a gas discharge part 157 for discharging the steam and the gas supplied to one side of the mold, and may further include a gas supply part 150 for mixing the steam and the gas and supplying the gas to the mold.

Thus, look at the operation of the temperature control device of the mold of the present invention configured as follows.

First, when the circulating water is supplied to the supply pipe 111 of the circulating water supply unit 110, the circulating water 113 is supplied to the circulation tank 113 in a state in which impurities of the circulating water are removed to prevent rust from the supply filter 112. When the circulating water is supplied to the circulating tank 113 formed with an air vent 119 for removing the water and an overwater prevention part 118 for discharging when the circulating water is supercharged and a drain part 114 for draining the lower part, the central one side The circulation water is supplied to the steam supply unit 120 by the operation of the water supply pump 116 of the water supply unit 115.

As such, when the circulating water is supplied by the operation of the water supply pump 116, the water supply supplied to the preheating unit 122 formed at one side of the lower portion of the steam generator 121 of the steam supply unit 120 is expanded while the contact area is coiled. The preheating coil 123, which is heated in advance to increase the thermal efficiency, is supplied to the steam generator 121 through the water supply pipe 124 in a preheated state through the circulation water.

As described above, the first pre-heated circulating water forms a pressure gauge 128 indicating a pressure and a pressure switch 127 for regulating the pressure, and a steam generating safety valve 126 is formed for safety due to overpressure. It is supplied to the unit 121 and heated to detect the internal temperature with the temperature sensor 129 as a heater inside the steam generating unit 121 to be steamed to detect the temperature of the high temperature and high pressure steam supplied to the temperature sensor 129 While supplying to the supply control unit 130.

As such, the steam generator 121 supplies the high temperature and high pressure steam to the mold supply pipe 136 connected to the mold 1 through the supply control valve 131 controlled by the air supplied to the control supply pipe 132. The cooling control valve 134 is connected to the supply pipe 111 of the circulating water supply unit 110 and is provided with a cooling check valve 135 to prevent backflow in the cooling supply pipe 133 for supplying cold water. In the mold supply pipe 136 is supplied to the mold (1) by controlling the supply control valve 131 and the cooling control valve 134 is formed to be supplied to the mold supply pipe 136 for supplying steam to the mold through According to the temperature of the temperature sensor 137 formed on one side of the mold 1, the mold 1 is supplied with steam and cooling to achieve an optimal molding temperature.

As described above, steam and cooling water are supplied from the mold supply pipe 136 according to the optimum temperature of the mold 1, and the steam and cooling water is recovered to the recovery pipe 141 formed on the other side of the mold 1 to recover the control valve. The temperature of the mold 1 is heated or cooled to an optimal temperature while being circulated by supplying the circulation tank 113 to the circulation supply pipe 143 to circulate the steam and the cooling water recovered to the 142.

At this time, the supply control unit 130 is provided with a plurality of temperature sensors 129 by forming a plurality of branch supply pipe 136 connected to the mold steam and cold water of the supply control valve 131 and the cooling control valve 134. Steam and cold water are supplied to the used mold 1, and a recovery tube 141 is provided for each mold 1 so as to recover the supplied steam and cold water to control the temperature of the plurality of molds 1.

In another embodiment of the present invention, when supplying gas to produce a special type of casting, such as the tube (2) of the tire, the steam supply pipe 151 and the gas supply pipe for supplying the steam generated by the steam generating unit 121 The pressure supply unit 153 pressurizes the 152 to be mixed in the mixing unit 154 and displays the pressure with the pressure gauge 156 to display the pressure and mix the steam and gas mixed in the tube 2 with the mixing supply pipe 155. It is supplied to the tube to manufacture, and the mixed gas is discharged to the gas discharge unit 157 and used in various molds (1) to expand the versatility.

In this way, the temperature control apparatus of the mold of the present invention is configured to supply steam to the steam generator by supplying the circulating water supplied from the circulating water supply unit to the steam generator so that the mold is required to have an optimal temperature in a state where high temperature and high pressure steam is generated. By preheating the mold by supplying it to the mold in the formed state, it is possible to easily maintain the mold at the optimum temperature by preheating the mold while spraying steam maintaining high temperature and high pressure, thereby forming castings in the optimal preheated state. Prolong the service life and produce high quality castings to increase productivity.

In addition, the temperature control device of the mold of the present invention forms a supply filter in the supply pipe for supplying the circulating water to remove impurities in the circulating water, thereby minimizing the occurrence of rust by foreign matters while circulating the circulating water to extend the life of the temperature control device Extends to improve productivity.

In addition, the temperature control apparatus of the mold of the present invention forms a circulation tank in the circulation water supply portion for supplying the circulation water, and supplies the respective molds with high temperature and high pressure steam while supplying water to the steam generator with a water supply pump. By supplying steam in the form of steam, the device can be reduced and the number of pumped water can be reduced, thereby reducing the production cost and miniaturizing the device, thereby improving productivity.

In addition, the temperature control apparatus of the mold of the present invention forms a preheating section of a predetermined section to one side of the steam generating section in which steam is generated, and supplies the circulating water supplied to the outside of the preheating section to a preheating coil formed in the form of a coil to enlarge the contact area. It recovers the heat dissipated to the outside before supplying the inside to the water supply pipe and supplies the heated state before supplying to increase the thermal efficiency.

In addition, the temperature control apparatus of the mold of the present invention supplies steam and cooling water from one integrated supply pipe and recovers the same recovery pipe by supplying the steam supplied to the mold and the cooling water supplied at the time of cooling in one mold supply pipe. As a result, the supply and recovery lines due to preheating and cooling are united to provide an effect of reducing equipment.

In addition, the temperature control device of the mold of the present invention supplies the circulating water, the steam generated in the steam generating unit is maintained at a high temperature and high pressure, and is rapidly injected according to the mold temperature by the operation of the supply control unit to obtain an appropriate temperature. By maintaining it, it is possible to minimize the defective rate of the casting due to the temperature displacement to provide an effect of improving the quality.

And, the temperature control device of the mold of the present invention forms a circulation tank in the circulation water supply unit for supplying the circulation water to check the amount of water evaporated or supercharged by the circulation to smoothly supply the circulation water as the temperature control device It improves productivity as it prevents failure due to lack of circulation water or supercharging and increases the service life.

In addition, the temperature control device of the mold of the present invention is to supply a pressurized part at a constant pressure in the pressurizing unit by mixing the steam supply pipe and the supply gas for supplying steam even in a special mold for supplying the gas, such as tire tube molding. Therefore, the use of steam in various forms provides an effect of expanding the versatility.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary and will be understood by those of ordinary skill in the art that various modifications and variations can be made therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the utility model registration claims attached.

Claims (6)

The supply pipe is formed to supply the circulating water to the supply filter with impurities removed, and a circulation tank having a drain part is formed at one side to store the circulating water supplied to the supply pipe, and is formed at the other side to supply the circulating water of the circulation tank. A circulating water supply unit for supplying circulating water by forming a water supply pump having a circulation check valve to prevent backflow in the water supply unit; A steam generator is provided to supply circulating water supplied to the water supply pump of the circulating water supply unit to a water supply pipe to generate steam, and a steam generator is formed to heat the steam, and the heat of the heater is lowered to one side of the steam generator. The preheating part is formed to dissipate, and the preheating coil is formed to supply the circulating water supplied to the circulating water supply part in the form of a coil to the outside of the preheating part by expanding the contact area with the preheating part. And a steam supply unit for supplying steam by forming a temperature sensor measuring temperature thereinto one side of the steam generator, It is formed to supply and control the supply control valve provided with a control supply pipe for controlling the supply of steam supplied from the steam generating unit of the steam supply unit with air, and is connected to the supply pipe of the circulating water supply unit to supply the cold water backflow It is connected to a cooling control valve equipped with a cooling check valve to prevent the cold water is formed to control and supply, and the steam and cold water of the supply control valve and the cooling control valve is combined with the mold supply pipe connected to the mold mold equipped with a temperature sensor A supply control unit configured to supply to the A recovery tube for recovering steam and cooling water supplied to the mold by the supply control unit is formed on one side of the mold, and a recovery control valve is formed to control the recovery of the circulating water recovered from the recovery tube, and the recovery controlled by the recovery control valve is performed. And a recovery part including a circulation supply pipe for circulating the water in a circulation tank. The method of claim 1, The circulating water supply unit is configured to form an air vent to remove the internal air in the upper portion of the circulation tank, and to form an overwater prevention unit for preventing an overwater to prevent the inflow of the circulation tank and to discharge the supercharged circulating water. Mold temperature control system. The method of claim 1, The steam supply unit includes a pressure gauge displaying a pressure on the upper portion of the steam generator to form a pressure switch to control the pressure, and a safety valve that is discharged when the pressure is elevated to the upper one side of the steam generator to form a pressure valve. Temperature control device of the mold, characterized in that configured to adjust. delete The method of claim 1, Supplying steam generated from the steam supply unit to a steam supply pipe and supplying gas to a gas supply pipe to form a mixing unit for mixing steam and gas, forming a pressurizing unit for pressurizing the mixed steam and gas to one side of the mixing unit, and a mixing unit In order to check the pressure of the steam and gas pressurized in the pressure gauge to form a mixed supply pipe for supplying the mold, and to form a gas discharge portion for discharging the steam and gas supplied to one side of the mold to mix the steam and gas supplied to the mold The apparatus for controlling the temperature of a mold, further comprising a gas supply unit. The method of claim 1, The supply control part is formed by branching a plurality of mold supply pipes connected to the mold with steam and cold water of the supply control valve and the cooling control valve to supply steam and cold water to the mold having a plurality of temperature sensors, and having a recovery tube for each mold. Mold temperature control device, characterized in that configured to recover the supplied steam and cold water to control the temperature in the plurality of molds.

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