KR101036548B1 - Pressure apparatus of temperature control system for injection mold and temperature controller for injection mold - Google Patents

Abstract

PURPOSE: A press device of a temperature control system for an injection mold and a temperature control system for an injection mold are provided to extend service life and reduce manufacturing costs by the automatic supply of water to a temperature controller. CONSTITUTION: A press device(300) of a temperature control system for an injection mold comprises a water supply pipe(310), a water tank(320), a regulator(330), a feeding pipe(340), a feeding valve(350), a water level sensor(360), a selection valve(370), a steam storing tank(380), an exhaust valve(420), and a cool chamber(410). The water tank stores the water provided through the water supply pipe. The regulator maintains the inside of the water tank with specific pressure. The feeding pipe feeds the water of the water tank to the temperature controller. If the pressure of the temperature controller is lower than the specific pressure, the feeding valve opens the feeding pipe. The selection valve blocks the pressure provided from the regulator to the water tank and opens the vent of the water tank. The selection valve opens the pressure provided from the regulator to the water tank and closes the vent. The exhaust valve discharges or blocks the steam of the steam storing tank. The cool chamber cools the steam of the high temperature provided from the temperature controller.

Description

PRESSURE APPARATUS OF TEMPERATURE CONTROL SYSTEM FOR INJECTION MOLD AND TEMPERATURE CONTROLLER FOR INJECTION MOLD}

The present invention relates to a temperature control system for injection molds and the like.

In most cases, resin products are produced by injection molding.

Depending on the product produced through the injection mold, various resin materials are used. Depending on the type of resin material, even if the solidification time is fast, the required quality may be guaranteed or not (that is, when a defect occurs).

There are also products that need to be mass-produced in a short time rather than quality and products that must be guaranteed.

Therefore, in recent years, a temperature controller for controlling the temperature of the injection mold according to the quality of the resin or the product to be secured has been developed and used.

That is, the temperature controller reduces the injection molding time by reducing the temperature of the injection mold when it is necessary to produce a large amount of products within a faster time than the quality of the product (if PP resin or PE resin is used). If the product is made of resins (engineering plastic resins, etc.) with a lot of defects, or if the quality is ensured by solidifying at a high temperature, it is possible to suppress the occurrence of defects by maintaining the temperature of the injection mold above a certain temperature.

Regarding such an injection mold temperature controller, it is disclosed through Korean Utility Model Registration Application No. 25871 and Korean Patent Application Publication No. 2002-0041165.

As shown in FIG. 1, the conventional temperature controller 100 includes a heater 111, a cooler 112, a distributor 120, a pump 130, and the like.

Heater 111 is provided to heat the temperature control water to the required temperature in order to maintain the injection mold (M) above a predetermined temperature, the cooler 112 is a temperature used to lower the temperature of the injection mold (M) It is provided to lower the water for adjustment to the required temperature, and depending on the implementation, only one of the heater 111 and the cooler 112 may be provided.

The distributor 120 is provided to divide and supply the water for temperature control which is moved from the pump 130 to the injection mold M side, and generally includes one inlet through which water flows in and a plurality of outlets through which water flows out. Have

The pump 130 is provided between the heater 111 or the cooler 112 and the distributor 120, and pumps the temperature control water passing through the heater 111 or the cooler 112 to the distributor 120. And move to the injection mold (M) side, ultimately heater 111 or cooler 112-> pump 130-> dispenser 120-> mold (M)-> heater 111 or cooler 112 Force the water to circulate on the circulation path leading to).

Temperature controllers such as the above are for the low temperature and the high temperature of about 150 ℃ should be about 90 ℃ temperature of the water for circulating temperature control.

On the other hand, the continued use of the circulating thermostating water leads to the loss of water, which must be replenished.

However, in general, since water of a factory supplied to a temperature controller is supplied at a pressure of about 0.5 kg / Cm ² , it is difficult to supply a high temperature controller for high temperature due to high temperature through a general water supply pipe.

Therefore, the plant water is pressurized through a pump or a cylinder and supplied to the temperature controller. However, the pump has a disadvantage in that the cost is high because the motor is applied, and the cylinder has a short lifespan.

It is an object of the present invention to provide a technology capable of supplying pressurized water to a high temperature thermostat using a regulator and a reservoir tank having relatively low value.

Pressurization apparatus for an injection mold temperature control system according to the present invention for achieving the above object, the water supply pipe for supplying temperature control water (hereinafter referred to as 'water'); A water storage tank for storing the water supplied through the water supply pipe; A regulator for maintaining the inside of the water tank at a specific pressure; A supply pipe for supplying water from the reservoir tank to a temperature controller; And a supply valve which opens the supply pipe when the pressure at the temperature controller becomes lower than a specific pressure. It includes.

The pressurizing device is a water level sensor for detecting the water level of the water storage tank; And when the water level sensed by the water level sensor is lower than a predetermined standard, blocking the pressure coming from the regulator into the water storage tank and opening an outlet for discharging air in an upper space of the water storage tank, and detected by the water level sensor. A selection valve opening the pressure coming from the regulator into the water storage tank and closing the outlet when the level is higher than a predetermined standard; It may further include.

The pressurizing device includes a steam storage tank for storing steam coming from the temperature controller side; And it may further include a storage valve provided to discharge the steam stored in the storage tank or to block the discharge.

The pressurizing device comprises: a cooling chamber for cooling the high temperature steam on the way to the steam storage tank from the high temperature steam coming from the temperature controller side; It may further include.

The cooling chamber may include a chamber in which high temperature steam coming from the temperature controller side is accommodated; And a cooling tube passing through the interior of the chamber. It includes, it is preferable that the water supplied through the branch pipe branched from the water supply pipe passes through the cooling pipe.

If the pressure of the steam storage tank is a predetermined level or more preferably further comprises a discharge valve for discharging the steam stored in the steam storage tank.

The temperature control system for injection mold according to the present invention for achieving the above object, the temperature controller for controlling the temperature of the injection mold on the circulation path by circulating the temperature control water (hereinafter referred to as 'water') in a constant circulation path. ; And a pressurizing device according to any one of claims 1 to 6, which supplies water through pressurization to the temperature controller. It includes.

According to the present invention, since it is possible to supply water by pressurizing the water to a high temperature temperature controller using a low-cost and low-cost regulator, there is an effect of reducing the manufacturing cost while extending the life of the pressurizing device.

1 is a configuration diagram for a temperature controller for injection mold according to the prior art.
Figure 2 is a block diagram of a temperature controller applied to the temperature control system for injection mold according to the present invention.
Figure 3 is a block diagram of a pressurization device for an injection mold temperature control system according to an embodiment of the present invention.
4 is a configuration diagram of a modification of the temperature controller for injection mold of FIG.

Hereinafter, a preferred embodiment according to the present invention as described above with reference to the accompanying drawings, for the sake of brevity of description overlapping description is omitted or compressed as possible.

<Description of Thermostat>

Figure 2 is a block diagram for a temperature controller for injection mold (200, hereinafter abbreviated as "temperature controller") according to an embodiment of the present invention.

2, the temperature controller 200 according to the present embodiment includes a water tank 210, a sensor 220, an open / close valve 230, a pump 240, a temperature control part 250, and a distributor. 260, a controller 270, and the like.

The water tank 210 is provided to store a predetermined amount or more of water for temperature control (hereinafter, abbreviated as 'water') supplied through the supply line PL after being pressurized by a pressurizing device to be described later.

The sensor 220 is provided to detect the amount of water stored in the water tank 210, and may be preferably applied to a general level sensor.

Opening and closing valve 230 is provided to open and close the supply line (PL) for supplying water to the water tank (210). That is, when the water pressurized by the pressure device is supplied to the water tank 210, the on-off valve 230 opens the supply line (PL).

The pump 240 passes through the water tank 210-> pump 240-> temperature control part 250-> distributor 260-> injection mold (M) sequentially and then back to the water tank 210 It is provided to forcibly circulate the water on the subsequent water circulation path.

The temperature control part 250 is provided to adjust water to a required temperature, and includes a cooler 251 and a heater 252.

Cooler 251 is provided to lower the water to the required temperature in order to lower the temperature of the injection mold (M). Of course, depending on the embodiment, as shown in FIG. 4, the temperature adjusting portion 550 may include only the heater 552, and instead, the cooling tank 511 may be integrally formed with the fluid tank 510. Do.

The heater 252 is provided to heat water to a required temperature in order to maintain the injection mold M above a predetermined temperature.

The distributor 260 is provided for dividing the water whose temperature is controlled in the temperature control part 250 to the injection mold M side. The distributor 260 may be integrally formed with the heater 252 according to the implementation.

The controller 270 is provided to manually or automatically operate only one of the cooler 251 and the heater 252 according to the use mode.

In addition, the controller 270 controls the on / off valve 230 to open the supply line PL when the amount of water sensed from the detector 220 is below a predetermined level so that the water is supplied to the water tank 210, and the detector If the amount of water detected from the 220 is above a predetermined level, the on / off valve 230 is controlled to close the supply line PL to block the supply of water. Further, according to the implementation, the degree of heating of the heater 252 or the cooler by the controller 270 according to a command input from the user so that the temperature of the water can be adjusted to the temperature intended by the user through the controller 270. It is also possible to control the degree of cooling of 251.

Subsequently, the operation of the temperature controller 200 as described above will be described.

When the user turns on the temperature controller 200, the controller 270 checks the amount of water stored in the water tank 210 sensed by the detector 220, and if there is no water or insufficient water in the water tank 210, the opening and closing valve When the water is supplied by opening the 230 and then closing the on-off valve 230 when the water is above a certain level and then operate the pump 240, if the water is present in the water tank 210 above a certain level The pump 240 is operated directly in the state in which the shutoff valve 230 is closed.

In this case, since the water circulating continuously by the operation of the pump 240 may be difficult to reach a state reached by the required temperature from the cooler 251 or the heater 252, the water tank 210 may be removed from the heater 252. It is preferable to configure the bypass path BL leading to the step of circulating the water on the circulation path along the bypass path BL during the initial operation.

The initial operation is made so that the water circulating through the bypass BL can be sufficiently reached to the required temperature within the time passing through the cooler 251 or the heater 252 at the speed according to the operation of the pump 240. Ground, the bypass (BL) is blocked and the water is circulated through the normal circulation path via the injection mold.

Of course, if the amount of water stored in the water tank 210 is reduced to less than a certain lower limit by the operation of the constant temperature controller 200, the sensor 200 detects this and sends the detected information to the controller 270, the controller 270 controls the on-off valve 230 in accordance with the corresponding information so that water is supplied to the water tank 210 through the supply line (PL). When the water tank 210 is filled with a predetermined upper limit or more by the continuous supply of water, the sensor 200 detects this and then sends the detected information to the controller 270. Accordingly, the controller 270 opens and closes the valve 230. ) To cut off the supply line PL.

<Description of the pressure device>

The pressurizing device 300, as shown in Figure 3, the water supply pipe 310, the reservoir tank 320, the regulator 330, the supply pipe 340, the supply valve 350, the water level sensor 360, It comprises a selection valve 370, steam storage tank 380, safety valve 390, cooling chamber 410, discharge valve 420 and the like.

The water supply pipe 310 is for supplying the water of the factory for use for temperature control to the water storage tank 320, the filter for removing foreign substances by filtering the water of the water supplying plant in the middle of the water supply pipe 310. (F) is provided. In addition, the middle of the water supply pipe 310 is provided with a check valve (CV ₁ ), if the pressure in the water storage tank 320 is higher than the water supply pressure of the water supplied to the water supply pipe 310 is closed, the water storage tank 320 If the pressure in the water is lower than the water supply pressure of the water supplied to the water supply pipe 310 is opened.

The water storage tank 320 is provided to store the water supplied through the water supply pipe 310, and has an outlet 321 for discharging the air in the interior of the water storage tank 320.

The regulator 330 applies air pressure into the storage tank 320 through the pressure pipe PP to maintain the inside of the storage tank 320 at a specific pressure of about 4 kg / Cm ² . And the middle of the pressure pipe (PP) is provided with a check valve (CV ₂ ) having a directional, if the pressure in the water storage tank 320 is above a certain pressure, the pressure pipe (PP) is blocked and the pressure in the water storage tank (320) If it is below this specific pressure, pressurization piping PP will open.

The supply pipe 340 is provided for supplying the water stored in the water storage tank 320 to the temperature controller 200 (more specifically, the water tank, hereinafter referred to as "water tank").

The supply valve 350 opens the supply pipe 340 when the pressure in the water tank 210 is lower than the specific pressure, and blocks the supply pipe 340 when the pressure in the water tank 210 is higher than the specific pressure. To this end, the supply valve 350 is preferably a check valve having a directionality.

The water level sensor 360 detects the water level stored in the water storage tank 320.

The selection valve 370 is provided between the water storage tank 310 and the check valve CV ₂ while being on the pressurized pipe PP and selectively inputs air pressure from the regulator 330 to the water storage tank 320. It serves to discharge the air of the storage tank 320 to the outside. That is, the selection valve 370 closes the pressure pipe PP when the water level sensed by the water level sensor 360 is below a predetermined standard to block the pressure coming from the regulator 330 into the water storage tank 320 and the water storage tank ( By opening the outlet 321 for discharging the air in the upper space of the outside 320 to lower the pressure in the water storage tank 320, the water of the factory water supply at a pressure of 0.5kg / Cm ² is the storage tank 320 When the water level detected by the water level sensor 360 is above a certain standard, the pressure pipe PP is opened and the outlet 321 is closed to the outside, thereby storing the water tank by the air pressure coming from the regulator 330. 320 serves to allow the interior to be maintained at a certain pressure. To this end, the selection valve 370 may be provided as an electric valve which is controlled by an controller (in this case, the controller may be the same as or separate from the controller of the temperature controller) and may be electrically operated.

The steam storage tank 380 stores the steam through the steam pipe (SP) after the high temperature steam generated by the operation of the temperature controller 200 is collected in the water tank (210). The steam storage tank 380 has a drain 381 for draining the water generated by cooling the high-temperature steam.

When the pressure inside the steam storage tank 380 is greater than the discharge pressure (about 9kg / Cm ² ), the safety valve 390 automatically discharges the steam in the steam storage tank 380 to explode the steam storage tank 380. Is prepared to avoid danger.

The cooling chamber 410 includes a chamber 411 and a plurality of cooling tubes CP ₁ and CP ₂ .

The chamber 411 is the inlet 411a and the high temperature steam coming from the water tank 210 to the internal space (S) and the high temperature steam introduced through the inlet 411a is cooled to the steam storage tank 380 side Has an outlet 411b.

The cooling pipes CP ₁ and CP ₂ pass through the interior of the chamber 411. The cooling pipes CP ₁ and CP ₂ are supplied to the cooling pipes CP ₁ and CP ₂ through a branch pipe 311 branched from the water supply pipe 310. Water passes Therefore, the hot steam in the internal space S of the chamber 411 can be cooled by cold air from the cooling pipes CP ₁ and CP ₂ .

The discharge valve 420 opens or shuts off the drain port 381 of the steam storage tank 380 so that water or steam contained in the steam storage tank 380 is discharged or stored in the steam storage tank 380. The pressure in the storage tank 380 is lowered to maintain the required level. The discharge valve 420 is preferably to be controlled by a controller (not shown, may be the same as the controller of the thermostat or may be provided separately).

Subsequently, the operation of the pressurizing device 300 as described above will be described.

In the state where the water storage tank 320 maintains a specific pressure by the operation of the regulator 330, the discharge valve 420 is operated to discharge the water and steam of the steam storage tank 380 to the outside, the pressure inside the When lowered below a certain pressure, the pressure in the water tank 210 of the temperature controller 200 having the same pressure as the steam storage tank 380 is also lowered in conjunction with the specified pressure or less. Accordingly, the supply valve 350 opens the supply pipe 340, and water in the water storage tank 320 maintained at a specific pressure through the open supply pipe 340 is caused by the pressure difference of the water tank 210. Is supplied. Then, when water is supplied to the water tank 210 and the discharge valve 390 is closed, the supply valve 350 closes the supply pipe 340 when the pressure of the water tank 210 becomes higher than a specific pressure.

On the other hand, as the water in the water storage tank 320 moves to the water tank 210, the water level of the water storage tank 320 is lowered, and thus the selection valve 370 closes the pressure pipe PP and the water storage tank ( The outlet 321 of the 320 is opened to the outside to make the pressure in the water storage tank 320 equal to the outside. The check valve CV ₁ provided on the water supply pipe 310 opens the water supply pipe 310 to supply water to the storage tank 320 through the water supply pipe 310. As the water level of the water storage tank 320 is increased according to the water supply, the selector valve 370 opens the pressure pipe PP and closes the outlet 321 so that the inside of the water storage tank 320 is opened by the regulator 330. It is gradually increased to a certain pressure can be maintained in a state approaching a specific pressure, accordingly the check valve CV ₁ closes the water supply pipe 310 to stop the water supply.

Of course, the high temperature steam generated from the temperature controller 200 is collected in the water tank 210 and then moved through the steam pipe SP to the steam storage tank 380 in a cooled state while passing through the cooling chamber 410. The water and steam generated by the partial cooling of the steam due to the continuous cooling of the steam is received by the steam storage tank 380 through the drain 338 when the discharge valve 420 is operated to open the drain 381. Will exit. When the steam continues to accumulate in the steam storage tank 380 due to an operation failure of the discharge valve 420 or a controller for controlling the same, and the steam pressure rises to a predetermined level or more and becomes a discharge pressure or more, as described above, the safety valve The 390 is operated to discharge the steam in the steam storage tank 380 to the outside.

As described above, the detailed description of the present invention has been made by the embodiments with reference to the accompanying drawings. However, since the above-described embodiments have only been described with reference to preferred examples of the present invention, the present invention is limited to the above embodiments. It should not be understood that the scope of the present invention is to be understood by the claims and equivalent concepts described below.

200: temperature controller
300: pressurization device
310: water supply pipe
311: branch pipe
320: water storage tank
321: outlet
330: Regulator
340: supply piping
350: supply valve
360: water level sensor
370: Selection valve
380: Steam Storage Tank
381: drain
390: discharge valve
410: cooling chamber
411: chamber CP ₁ , CP ₂ : cooling tube

Claims (7)

Water supply pipe for supplying temperature control water (hereinafter referred to as 'water'):
A water storage tank for storing the water supplied through the water supply pipe;
A regulator for maintaining the inside of the water tank at a specific pressure;
A supply pipe for supplying water from the reservoir tank to a temperature controller;
A supply valve to open the supply pipe when the pressure at the temperature controller becomes lower than a specific pressure;
A water level sensor for sensing the water level of the water storage tank;
When the water level sensed by the water level sensor is below a certain standard, the pressure from the regulator is cut into the water storage tank, and an outlet for discharging air in an upper space of the water storage tank is opened, and the water level sensor sensed by the water level sensor A selection valve which opens a pressure coming from the regulator into the water storage tank and closes the discharge port when the water level is above a predetermined standard;
A steam storage tank for storing steam coming from the temperature controller side;
A discharge valve provided to discharge or block the discharged steam stored in the steam storage tank; And
A cooling chamber for cooling the high temperature steam on the way to the steam storage tank from the high temperature steam coming from the temperature controller side; Characterized in that it comprises
Pressurizing device for temperature control system for injection mold. delete delete delete The method of claim 1,
The cooling chamber is,
A chamber in which hot steam coming from the thermostat side is received; And
A cooling tube passing through the inside of the chamber; Including,
The cooling pipe is characterized in that the water supplied through the branch pipe branched from the water supply pipe passes.
Pressurizing device for temperature control system for injection mold. The method of claim 1,
If the pressure of the steam storage tank is a predetermined level or more, characterized in that it further comprises a safety valve for discharging the steam stored in the steam storage tank
Pressurizing device for temperature control system for injection mold. A temperature controller for controlling the temperature of the injection mold on the circulation path by circulating water for controlling temperature (hereinafter referred to as 'water') in a constant circulation path; And
A pressurizing device according to any one of claims 1, 5, and 6 for supplying water through pressurization to the temperature controller; Characterized in that it comprises
Temperature control system for injection molds.

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