JP3128598U - Mold heating / cooling system using superheated steam - Google Patents

Abstract

The present invention provides a mold heating / cooling system using superheated steam that can heat a mold to a temperature higher than a steam temperature supplied by a heating unit and perform molding of a molding material.
A heating and cooling system according to the present invention includes a mold, 00, a heating unit, a superheated steam generation unit that generates superheated steam, a cooling unit, and a plurality of molds disposed in the mold. A temperature sensor 101; a switching valve unit 50; and a control means 64 for controlling each of the heating, molding operation, and cooling of the mold based on the detection result of the mold temperature by the temperature sensor 101. The heating control of the mold by steam is performed from the start of heating of the mold 100 until the detection signal of the first set temperature accompanying the temperature rise of the mold 100 from the temperature sensor 101 is obtained, and then the second set temperature is detected. The mold is controlled to be heated by saturated steam until a signal is obtained, and thereafter, the mold is controlled to be heated by superheated steam having a temperature higher than that of the saturated steam.
[Selection] Figure 1

Description

  The present invention relates to a mold heating / cooling system using superheated steam, and more specifically, heating a mold using superheated steam suitable when a simple boiler is used as a heating source for heating the mold. It relates to a cooling system.

  Generally, in mold heating / cooling systems used in injection molding machines, blow molding machines, thermoforming machines, etc. for molding plastic products, etc., there are two types of molds for heating and cooling depending on the heating / cooling process. Thus, a series of molding cycles of heating the mold, injecting and holding the molding material, molding, cooling the mold, and taking out the molded product are repeated.

  In such a mold heating / cooling system, a simple boiler is often used as a means for generating steam as a heating medium.

However, when a simple boiler is used, steam is generated at a gauge pressure of 10 kg / cm ² or less, so only steam up to a maximum temperature of about 180 ° C. can be supplied to the mold, and high-quality molding of the molding material is performed. There was a limit in cases.

  In such a case, when heating the mold, in addition to the steam, it is conceivable to use superheated steam that is higher than the maximum temperature of the steam, but heating and cooling the mold using superheated steam. There is no system at present.

Patent Document 1 proposes an apparatus for manufacturing a ribbon dead product in which, when a ribbon dead product is manufactured using a mold, superheated steam is supplied into the mold to enhance the molding quality of the product. The case of Patent Document 1 does not include the technical idea of combining steam and superheated steam when the mold is heated.
Japanese Patent Laying-Open No. 2005-074917

  The problem to be solved by the present invention is that a mold unit is heated to a temperature higher than the steam temperature supplied by the heating unit while using a heating unit such as a simple boiler to perform high-quality molding of the molding material. However, there is no heating / cooling system that can be used.

  A mold heating and cooling system using superheated steam according to the present invention includes a mold, a heating unit that supplies steam for heating to the mold, and the steam from the heating unit is supplied to the mold. A superheated steam generating unit that generates superheated steam, a cooling unit that supplies cooling water to the mold, a temperature detector disposed in the mold, the heating unit, the superheated steam generating unit, and the cooling unit; A switching valve unit that switches between a steam supply / recovery pipeline, a saturated steam supply pipeline, and a superheated steam supply / recovery pipeline arranged between the mold and the mold temperature by the temperature detector And a heating / cooling system for the mold using superheated steam, each of which controls the heating, molding operation, and cooling of the mold based on the detection result of the mold, and heating the mold by the control means From the beginning A steam supply / recovery conduit to the mold is formed in the switching valve unit until a detection signal of the first set temperature associated with the temperature rise of the mold from the temperature detection unit is obtained, and the mold heating control by steam is performed. After the first set temperature detection signal is obtained, the switching valve unit is saturated at a temperature higher than that of the steam until the second set temperature detection signal is obtained from the temperature detection unit as the mold temperature rises. A steam supply conduit is formed to control heating of the mold with saturated steam, and after obtaining a detection signal of the second set temperature, supply / recovery of superheated steam higher than the saturated steam to the switching valve unit The main feature is that a pipe is formed to control heating of the mold by superheated steam.

The present invention has the following effects.
According to the invention described in claim 1, even when a heating unit such as a simple boiler is used, in addition to the heating unit, a superheated steam generating unit that supplies superheated steam to the mold is combined with the mold. On the other hand, since three types of heating media, steam, saturated steam, and superheated steam, are supplied in order to perform heating, the mold temperature is increased to a temperature higher than the steam temperature supplied by the heating unit. It is possible to provide a heating and cooling system using superheated steam capable of performing quality molding.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the temperature of the mold is detected by a plurality of temperature detection units, and the mold is determined based on any one of the detection results, all or an average value. Since the mold heating control is performed, it is possible to provide a heating / cooling system using superheated steam that can perform high-quality molding of a molding material based on stricter mold temperature control. .

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 2, superheated steam capable of accurately performing a series of molding processes from the heating of the mold to the molding operation and the cooling process is utilized. A heating and cooling system can be provided.

  According to the invention described in claim 4, even when a heating unit such as a simple boiler is used, the first set temperature is 140 ° C. and the second set temperature is 170 ° C. Similar to the invention described in 3, it is possible to provide a heating and cooling system using superheated steam that can accurately perform a series of molding steps from heating of a mold to a molding operation and a cooling step.

  The present invention provides a heating / cooling system capable of forming a molding material with high quality by heating the mold temperature to a temperature higher than the steam temperature supplied by the heating unit while using a heating unit such as a simple boiler. The purpose of providing a mold, a heating unit that supplies steam for heating to the mold, a superheated steam generation unit that takes in steam from the heating unit and generates superheated steam that is supplied to the mold, A cooling unit that supplies cooling water to the mold, a plurality of temperature detection units disposed in the mold, a heating unit, a superheated steam generation unit, a cooling unit, and a mold disposed between the molds Supply / recovery pipeline, saturated steam supply / superheated steam supply / recovery pipeline, cooling water supply / recovery switching valve unit, and mold temperature by the temperature detector Based on the detection result, it is determined that any one of these, all or the average value has reached the set temperature, and each of the heating, molding operation, and cooling of the mold is determined according to any of these determination results. A heating / cooling system for a mold using superheated steam, comprising: a control means for performing control; from the heating start of the mold to a temperature rise of the mold from the plurality of temperature detection units by the control means. A steam supply / recovery line to the mold is formed in the switching valve unit until a detection signal of the first set temperature is obtained, and heating control of the mold with steam is performed to detect the first set temperature. After obtaining the signal, until a second set temperature detection signal is obtained by forming a saturated steam supply pipe having a temperature higher than the steam in the switching valve unit based on any one, all or an average value of the signals. Mold addition with saturated steam After performing the control and obtaining the detection signal of the second set temperature, a supply / recovery line for superheated steam having a temperature higher than the saturated steam is formed in the switching valve unit based on any one, all, or an average value. The mold is controlled by superheated steam, and after the molding operation of the mold is finished, a cooling water supply / recovery conduit to the mold is formed in the switching valve unit to cool the mold. Realized by.

  Hereinafter, a heating and cooling system for a mold using superheated steam according to an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows a heating / cooling system of a mold 100 using superheated steam according to an embodiment of the present invention. The heating / cooling system of the mold 100 includes a heating unit 1, a cooling unit 30, and a superheated steam generation unit. 90, a switching valve unit 50 and a mold 100 are provided.

  The heating unit 1 turns raw water into soft water by a water softener 21 and injects a medicine such as an antiseptic by a chemical injection device 22, and then supplies the raw water to a boiler (for example, a small boiler) 20. The boiler 20 is a heating medium. The steam is supplied from the discharge valve 23 to the switching valve unit 50 as steam.

  The cooling unit 30 guides the cooling water supplied to the cooling water supply port to a cooling tower (or chiller) 31, and further pumps the cooling water (water temperature of 10 ° C. to normal temperature) exchanged in the cooling tower 31. Thus, the switching valve unit 50 is supplied through the cooling water discharge port. In addition, the cooling water returned from the switching valve unit 50 is introduced from the cooling water return port, and water is sprinkled from the upper part of the cooling tower 31 to exchange heat.

  The superheated steam generation unit 90 includes a superheated steam generator 91 that takes in steam from a discharge side branch line of the discharge valve 23 of the heating unit 1 through a manual valve 92 and a pressure reducing valve 93 and generates superheated steam. The superheated steam generated by the superheated steam generator 91 is supplied to the switching valve unit 50.

  The switching valve unit 50 includes five switching valves 71, 72, 73, 74, 81, all of which open and close by air control, and supply / recovery pipes for superheated steam from the superheated steam generation unit 90 to the mold 100. Each of the passage and the atmosphere release pipe line has a total of eight switching valve groups including three switching valves 82, 83, and 84 that are opened and closed by air control.

  That is, the switching valve unit 50 causes the cooling water from the cooling water discharge port of the cooling unit 30 to flow into the pump 76 from the cooling water receiving port, the pressure is increased by the pump 76, and the manifold 61 is further connected via the switching valve 71. After that, it is supplied to the mold 100. Further, the cooling water circulated through the mold 100 is guided to the cooling water drain through the manifold 62 and further to the cooling water drain through the switching valve 72 so as to flow into the cooling water return port of the cooling unit 30. With these pipe line configurations, a cooling water supply / recovery pipe line for the mold 100 is formed.

  Further, a switching valve 73 and a valve (silent reducer) 75 having a venturi mechanism are connected between the discharge side of the pump 76 and the outlet side of the switching valve 72, and between the valve 75 and the outlet side of the manifold 62. Is connected to a switching valve 81 to constitute a part of a steam supply / recovery line through which steam from the outlet side of the manifold 62 flows into the valve 75 via the switching valve 81.

  Air for controlling the opening / closing of the five switching valves 71 to 74 and the switching valve 81 (pressure air) is supplied from an air source (not shown) via an air filter 56 and an air regulator 57.

  In addition, air (pressure air) can be supplied from an air source (not shown) to the pipes on the outlet side of the switching valves 71 and 74 via the air filter 56 and the air regulator 57 and the cock 58 and the stop valve 59. .

Next, the three switching valves 82, 83, 84 will be described.
The air for controlling the opening / closing of the switching valves 82, 83, 84 is supplied from an air source (not shown) via an air filter 56 and an air regulator 57 as in the case described above.

  Further, the inlet side of the switching valves 82 and 83 is connected to the outlet side of the superheated steam generator 91, and the outlet side of one switching valve 83 is connected to the atmospheric discharger 85 for releasing the superheated steam to the atmosphere. The outlet side of the other switching valve 82 is connected to a pipe line connecting the switching valve 71 and the manifold 61.

  Further, the inlet side of the switching valve 84 is connected to a position in front of the manifold 62 on the outlet side of the steam or the like in the mold 100 via a pipe, and the outlet side of the switching valve 84 is connected to the outlet side of the switching valve 83. Connected to.

  The temperature of the mold 100 is detected by, for example, three temperature sensors 101 provided in the vicinity of the fixed mold, the movable mold, and the cavity constituting the mold 100, and the detected temperature signal of each temperature sensor 101 is switched. The valve unit 50 is configured to be sent (returned) to the control means 64 mounted on the control panel 63 of the valve unit 50.

  The number of the temperature sensors 101 arranged may be any number such as 2, 4, 5, etc. in addition to the case described above.

  As shown in FIG. 2, the control means 64 includes a control unit 66 that captures detection signals from the three temperature sensors 101, a program storage unit 65 that stores a temperature determination program, and a determination result obtained by the temperature determination program. Control signal for switching supply control of steam, saturated steam or superheated steam that is a heating medium to the mold 100 by the switching valve unit 50, cooling water that is a cooling medium, and air, and the mold 100 includes a control signal generation unit 67 that generates a control signal for performing molding operations such as mold closing and mold opening.

  The temperature determination program stored in the program storage unit 65 is based on the detected temperatures of the three temperature sensors 101, and any one of them, all or an average value is a set temperature (first set temperature or second set temperature). It is determined that the temperature has reached the set temperature), and the determination result is sent to the control signal generator 67.

  In the present embodiment, for example, the temperature is set to 140 ° C. as the first set temperature and, for example, 170 ° C. as the second set temperature. Further, the heating target temperature of the mold 100 is set to 185 ° C., for example.

  The heating target temperature of 185 ° C. is higher than the maximum temperature (for example, 180 ° C.) of the steam supplied from the boiler 20, and is a temperature obtained by supplying the superheated steam to the mold 100. ing.

  Then, the control signal generator 67 generates a control signal for forming a steam supply / recovery line by the switching valve unit 50 from the start of heating the mold 100 until the mold temperature reaches 140 ° C. The control signal for forming a saturated steam forming line is switched by the switching valve unit 50 until the temperature reaches 140 ° C. until the temperature reaches 170 ° C., and the switching is performed until the mold temperature reaches 170 ° C. and reaches the target temperature. The valve unit 50 is configured to output a control signal for forming a superheated steam supply / recovery pipeline.

  Further, a control signal for performing a molding operation such as mold closing by the mold 100 when the mold temperature reaches 185 ° C., and a control signal for forming a cooling water supply / recovery line after the molding operation is completed. Are each output.

  Next, a molding operation of, for example, a resin product by the heating / cooling system according to the present embodiment will be described with reference to FIGS. 3 shows the change in mold temperature and the timing of steam supply, saturated steam supply, superheated steam supply, mold closing and cooling water supply during the molding cycle, and FIG. 4 shows the switching valves 71 to 74 and the switching valve 81. The open / close state of thru 84 is shown.

(Standby)
At the time of standby in the heating / cooling system of this embodiment, only the switching valve 73 is controlled to be opened by the control signal generator 67, and the other switching valves 71, 72, 74 are controlled to be closed. Further, the switching valve 83 is controlled to be opened, and the switching valves 82 and 84 are controlled to be closed.

  At this time, the cooling water from the cooling unit 30 enters a circulating state that returns to the cooling unit 30 via the pump 76, the switching valve 73, and the valve 75. Further, the steam from the heating unit 1 is not supplied to the mold 100 because the switching valve 74 is closed. Further, the superheated steam from the superheated steam generation unit 90 is released to the atmosphere via the switching valve 83 and the atmospheric discharger 85.

(The mold closing process of the mold 100)
When the molding material is molded by the mold 100 after the mold 100 is heated to a set temperature, a control signal from the control signal generator 67 to the mold 100 and a control signal to the switching valve unit 50 are obtained. Based on the above, the mold 100 is closed and molded, and the switching valve 74 shown in FIG. 1 is controlled to be opened, and the switching valves 71 and 72 are controlled to be closed. Further, the switching valve 73 is controlled to be in an open state.

  At this time, the cooling water from the cooling unit 30 returns to the cooling unit 30 through the pump 76, the switching valve 73, and the valve 75, that is, forms a circulation path that does not pass through the mold 100. .

(Heating process of mold 100)
Next, the heating process for heating the mold 100 will be described in detail. In the heating process of the mold 100, first, a steam supply / recovery line is formed in the switching valve unit 50 based on the control signal from the control signal generator 67.

  That is, as heating of the mold 100 starts, based on the control signal from the control signal generator 67, the switching valve 71 is closed, the switching valve 72 is closed, the switching valve 73 is opened, the switching valve 74 is opened, and the switching valve is opened. 81 is controlled to open. Further, the switching valve 83 is controlled to be opened, and the switching valves 82 and 84 are controlled to be closed.

  Thereby, the steam produced by the heating unit 1 passes through the mold 100 through the switching valve 74 and the manifold 61, and a heating process for heating the mold 100 to a predetermined temperature is performed. 81, the manifold 62, and the valve 75 having the venturi mechanism flow into the cooling water circulation path.

  In this way, the mold 100 is heated by the steam, the mold temperature rises as shown in FIG. 3, and eventually reaches 140 ° C.

When the mold temperature reaches 140 ° C., this temperature is detected by the three temperature sensors 101, and these detection signals are sent to the program storage unit 65. The program storage unit 65 determines that any one, all, or the average value of the detected temperatures from the three temperature sensors 101 has reached the set temperature based on the temperature determination program, and determines the determination result (temperature determination value). 140 ° C.) to the control signal generator 67.
The control signal generator 67 switches the conduit of the switching valve unit 50 to a saturated steam forming conduit based on the determination result (temperature determination value).

  That is, the control signal generator 67 closes the switching valve 81 in the steam supply / recovery line described above based on the determination result (temperature determination value 140 ° C.). As a result, the recovery of the steam is stopped, the mold 100 is heated by the saturated steam having a temperature higher than the above-described steam, and the mold 100 is heated, and eventually reaches 170 ° C.

  When the mold temperature reaches 170 ° C., this temperature is detected by the three temperature sensors 101, and these detection signals are sent to the program storage unit 65. The program storage unit 65 determines that any one, all, or the average value of the detected temperatures from the three temperature sensors 101 is the set temperature based on the temperature determination program, and the determination result (temperature determination Value 170 ° C.) is sent to the control signal generator 67.

  The control signal generator 67 switches the conduit of the switching valve unit 50 to a superheated steam supply / recovery conduit based on the determination result (temperature determination value).

  That is, the control signal generator 67 closes the switching valve 74 and keeps the switching valve 81 closed based on the determination result (temperature determination value 170 ° C.), closes the switching valve 83, and switches the switching valves 82 and 84. Is open.

  Thereby, the superheated steam from the superheated steam generation unit 90 passes through the mold 100 through the switching valve 82 and the manifold 61, further heats the mold 100 to the heating target temperature, and the superheated steam is converted into the mold 100. From the outlet to the atmospheric discharger 85 through the switching valve 84.

  When the mold temperature of the mold 100 heated by superheated steam reaches the heating target temperature of 185 ° C., this temperature is detected by the three temperature sensors 101, and these detection signals are stored in the program storage unit 65. Sent.

  The program storage unit 65 determines that any one, all, or the average value of the detected temperatures from the three temperature sensors 101 is the set temperature based on the temperature determination program, and the determination result (temperature determination Value 185 ° C.) is sent to the control signal generator 67.

  Based on the determination result (temperature determination value), the control signal generator 67 opens the switching valve 81 and the switching valve 83 and closes the switching valve 82 and the switching valve 84. Thereby, the supply of superheated steam to the mold 100 is stopped, the superheated steam is released to the atmosphere, and the steam remaining in the mold 100 and the like is recovered to the cooling unit 30.

  After reaching such a state, the mold closing process of the mold 100 described above is executed by the control signal from the control signal generating unit 67, and the molding material is molded.

  In the heating process described above, the steam that has flowed into the valve 75 is smoothly discharged to the circulation path by the suction action of the venturi mechanism. That is, the flow rate of the cooling water is increased at the nozzle portion of the valve 75, the atmospheric pressure at the portion where the steam is sucked down, and the steam is sucked into the valve 75 and discharged into the circulation path smoothly. As a result, it is possible to smoothly discharge the steam to the circulation path, and it is possible to shorten the time for raising the mold 100 to a predetermined temperature during the heating process.

(When cooling mold 100)
After the heating process and the mold closing process of the mold 100 are completed, the process proceeds to the mold 100 cooling process. In the cooling process, the switching valves 73 and 74 and the switching valve 81 are closed and the switching valves 71 and 72 are opened to control the mold 100 by cooling water according to the control signal from the control signal generator 67. Cool down.

  That is, when the switching valves 73 and 74 and the switching valve 81 are closed and the switching valves 71 and 72 are opened, the cooling water is supplied to the pump 32, the pump 76, the switching valve 71, the manifold 61, the mold 100, Cooling water is circulated to the manifold 62, the switching valve 72, the cooling tower 31, and the pump 32, and the mold 100 is cooled.

  Then, after the mold 100 is cooled and the mold 100 is opened and the product is taken out based on the control signal indicating that the mold can be opened from the control signal generator 67 after the cooling is completed, the mold closing and heating described above are performed. Repeat a series of operations to move to the process.

  In this case, after the injection of the resin in the mold 100 is completed, the timing at which the switching valve unit 50 performs the operation of the cooling process in a state where the mold 100 is held at a predetermined temperature (usually a high temperature) can be variously changed. .

  In addition, by the control by the control signal generator 67, after the determination result (temperature determination value) in the cooling process is output, the air source 56 (not shown) passes through the air filter 56 and the air regulator 57 at a predetermined timing, and then the cock 58 and the stop valve. The air (pressure air) is supplied to the outlet side pipes of the switching valves 71 and 74 through 59, and the air (pressure air) is blown into the mold 100 through the manifold 61, thereby supercooling the mold 100. It is also possible to control to suppress this.

  In addition, each value of the 1st, 2nd preset temperature mentioned above and heating target temperature is an example, and it cannot be overemphasized that these temperature settings can be changed variously according to the value of the maximum temperature of the steam from the unit 1 for a heating. Yes.

  In addition, when heating the mold 100, molding operation, and cooling the mold 100, it is of course possible to combine time control using a timer (not shown).

  According to the heating and cooling system of the mold 100 according to the above-described embodiment, when the mold 100 is heated, the heating unit is combined with the supply of saturated steam and superheated steam in addition to steam during the heating process. It is possible to provide a heating / cooling system for the mold 100 that can increase the temperature of the mold 100 to be higher than the maximum temperature of the steam supplied from 1 and perform high-quality molding of the molding material.

  The present invention can be widely applied to various molding machines and molding systems that obtain molded products made of metal materials, in addition to the above-described molding machines that perform resin molding.

BRIEF DESCRIPTION OF THE DRAWINGS It is a piping block diagram of each element which comprises the heating / cooling system of the metal mold | die which concerns on Example 1 of this invention. It is a block diagram which shows the temperature sensor and control means in the heating-and-cooling system of the metal mold | die which concerns on the present Example 1. FIG. It is a figure which shows the change of the metal mold temperature in a shaping | molding cycle, and the timing of steam supply, saturated steam supply, superheated steam supply, mold closing, and cooling water supply in the mold heating / cooling system concerning a present Example. It is explanatory drawing which shows the opening / closing state of each switching valve in the heating / cooling system of the metal mold | die which concerns on a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heating unit 20 Boiler 21 Water softener 22 Chemical injection apparatus 23 Discharge valve 30 Cooling unit 31 Cooling tower 32 Pump 50 Switching valve unit 56 Air filter 57 Air regulator 58 Cock 59 Stop valve 61 Manifold 62 Manifold 63 Control panel 64 Control means 65 Program storage unit 66 Control unit 67 Control signal generation unit 71 Switching valve 72 Switching valve 73 Switching valve 74 Switching valve 75 Valve 76 Pump 81 Switching valve 82 Switching valve 83 Switching valve 84 Switching valve 85 Atmospheric discharger 90 Superheated steam generation unit 91 Overheating Steam generator 92 Manual valve 93 Pressure reducing valve 100 Mold 101 Temperature sensor

Claims (4)

Mold,
A heating unit for supplying heating steam to the mold;
A superheated steam generating unit that takes in the steam from the heating unit and generates superheated steam to be supplied to the mold;
A cooling unit for supplying cooling water to the mold,
A temperature detector disposed in the mold;
A steam supply / recovery line, a saturated steam supply line and a superheated steam supply / recovery line to the mold disposed between the heating unit, the superheated steam generation unit and the cooling unit, and the mold. A switching valve unit to be switched,
Control means for controlling the heating, molding operation, and cooling of the mold based on the detection result of the mold temperature by the temperature detector;
A mold heating / cooling system using superheated steam comprising:
A steam supply / recovery line from the start of heating of the mold to the switching valve unit until the detection signal of the first set temperature accompanying the temperature rise of the mold is obtained from the temperature detection unit by the control means. After the mold is heated by steam, the first set temperature detection signal is obtained, and then the second set temperature detection signal accompanying the mold temperature rise is obtained from the temperature detector. A saturated steam supply pipe having a higher temperature than the steam is formed in the switching valve unit until the mold is heated with saturated steam, and a detection signal of the second set temperature is obtained. A heating / cooling system for a mold using superheated steam, wherein a heating / heating control of the mold using superheated steam is performed by forming a supply / recovery line for superheated steam having a temperature higher than that of the saturated steam. Mold,
A heating unit for supplying heating steam to the mold;
A superheated steam generating unit that takes in the steam from the heating unit and generates superheated steam to be supplied to the mold;
A cooling unit for supplying cooling water to the mold,
A plurality of temperature detectors arranged in the mold;
A steam supply / recovery line, a saturated steam supply line and a superheated steam supply / recovery line to the mold disposed between the heating unit, the superheated steam generation unit and the cooling unit, and the mold. A switching valve unit to be switched,
Based on the detection result of the mold temperature by the temperature detection unit, it is determined that any one of these, all or an average value has become a set temperature, and the determination result of any of these molds Control means for controlling each of heating, molding operation and cooling;
A mold heating / cooling system using superheated steam comprising:
The control means supplies steam to the switching valve unit from the start of heating the mold to the first set temperature detection signal accompanying the temperature rise of the mold from the plurality of temperature detection units. A recovery pipe line is formed, heating control of the mold with steam is performed, and after obtaining a detection signal of the first set temperature, any one of these, based on the average value or the switching valve unit to the switching valve unit After forming a pipeline for supplying saturated steam at a temperature higher than that of the steam and performing heating control of the mold with saturated steam until a detection signal for the second set temperature is obtained, and after obtaining a detection signal for the second set temperature, these Based on any one, all or an average value, a supply / recovery line for superheated steam higher than the saturated steam is formed in the switching valve unit, and the heating control of the mold by superheated steam is performed. Superheated steam Mold heating and cooling systems utilizing. Mold,
A heating unit for supplying heating steam to the mold;
A superheated steam generating unit that takes in the steam from the heating unit and generates superheated steam to be supplied to the mold;
A cooling unit for supplying cooling water to the mold,
A plurality of temperature detectors arranged in the mold;
A steam supply / recovery line to a mold disposed between the heating unit, superheated steam generation unit and cooling unit, and a mold, a saturated steam supply line and a superheated steam supply / recovery line, A switching valve unit for switching the cooling water supply / recovery line,
Based on the detection result of the mold temperature by the temperature detection unit, it is determined that any one of these, all or an average value has become a set temperature, and the determination result of any of these molds Control means for controlling each of heating, molding operation and cooling;
A mold heating / cooling system using superheated steam comprising:
The control means supplies steam to the switching valve unit from the start of heating the mold to the first set temperature detection signal accompanying the temperature rise of the mold from the plurality of temperature detection units. A recovery pipe line is formed, heating control of the mold with steam is performed, and after obtaining a detection signal of the first set temperature, any one of these, based on the average value or the switching valve unit to the switching valve unit After forming a pipeline for supplying saturated steam at a temperature higher than that of the steam and performing heating control of the mold with saturated steam until a detection signal for the second set temperature is obtained, and after obtaining a detection signal for the second set temperature, these A superheated steam supply / recovery line higher in temperature than the saturated steam is formed in the switching valve unit on the basis of any one, all, or an average value, and heating control of the mold with superheated steam is performed. After the molding operation is completed, switch To form a cooling water supply and recovery pipe into the mold to the valve unit, the mold heating and cooling system utilizing superheated steam, characterized in that to perform the mold cooling. Mold,
A heating unit for supplying heating steam to the mold;
A superheated steam generating unit that takes in the steam from the heating unit and generates superheated steam to be supplied to the mold;
A cooling unit for supplying cooling water to the mold,
A plurality of temperature detectors arranged in the mold;
A steam supply / recovery line to a mold disposed between the heating unit, superheated steam generation unit and cooling unit, and a mold, a saturated steam supply line and a superheated steam supply / recovery line, A switching valve unit for switching the cooling water supply / recovery line,
Based on the detection result of the mold temperature by the temperature detection unit, it is determined that any one of these, all or an average value has become a set temperature, and the determination result of any of these molds Control means for controlling each of heating, molding operation and cooling;
A mold heating / cooling system using superheated steam comprising:
From the start of heating the mold to the mold until the switching valve unit obtains a detection signal of 140 ° C., which is the first set temperature associated with the temperature rise of the mold, from the plurality of temperature detection units. The steam supply / recovery pipeline is formed, the heating control of the mold with steam is performed, and the detection signal of the first set temperature is obtained, and then the switching is performed based on any one of these, all or the average value. A conduit for supplying saturated steam at a temperature higher than the steam is formed in the valve unit, and the heating control of the mold with saturated steam is performed until a detection signal of 170 ° C., which is the second set temperature, is obtained. After obtaining a detection signal of 170 ° C., a superheated steam supply / recovery line higher than the saturated steam is formed in the switching valve unit based on any one, all or an average value of the detection signal. Mold heating by After the mold forming operation is completed, the switching valve unit is provided with a cooling water supply / recovery conduit to the mold to cool the mold. Mold heating and cooling system used.

Images