KR101188993B1 - Temperature controller for injection mold - Google Patents

Abstract

The present invention relates to a temperature controller for an injection mold, and the like, according to the present invention, by collecting and discharging bubbles generated from a fluid circulating on a constant circulation path by pumping, thereby removing bubbles in the fluid circulating on the circulation path. Disclosed is a technique capable of improving the reliability of temperature control of an injection mold.

Description

TEMPERATURE CONTROLLER FOR INJECTION MOLD}

The present invention relates to a temperature controller for injection mold.

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 To force the fluid to circulate on the circulation path leading to).

By the way, the foam is generated according to the continuous operation of the temperature controller 100, the generated bubbles are mixed with the circulating temperature control water to circulate together, due to these bubbles, the reliability of the temperature control of the injection mold is reduced. .

An object of the present invention is to provide a technique that can remove the bubbles generated by the continuous circulation of the temperature control fluid using gravity.

In order to achieve the object as described above, the injection mold temperature controller according to the first aspect of the present invention includes a fluid tank for storing a supplied temperature control fluid (hereinafter, referred to as "fluid"); A pump for pumping the fluid stored in the fluid tank to circulate in a constant circulation path; A temperature control element positioned on a circulation path of the fluid pumped by the pump to trap bubbles and to adjust the fluid to the required temperature; A distributor for dividing and distributing the fluid adjusted to the temperature required from the temperature regulating element to the injection mold side; And a bubble pipe connected to the temperature control element and the other side connected to the fluid tank so as to send the bubbles collected by the temperature control element to the fluid tank. .

The temperature regulating element may be a cooler for cooling the fluid to the required temperature.

The temperature control element, the bubble collecting portion for collecting the bubbles in the inner space and send the collected bubbles to the fluid tank through the bubble pipe; And a temperature controller for controlling the temperature of the fluid and sending it to the distributor side. It includes.

The bubble collecting unit is located above the temperature control unit, and has an input port through which the fluid is input and a piping port for sending the bubbles collected in the inner space to the bubble pipe, and the height of the inner space of the bubble collecting unit is the bubble pipe. It is preferably lower than the height of the point connected to the fluid tank.

The fluid tank has a discharge port for discharging the bubbles contained in the fluid tank when the fluid is supplied to the fluid tank through a supply line.

In addition, the injection mold temperature controller according to the second aspect of the present invention for achieving the object as described above, the pump for pumping to circulate a temperature control fluid (hereinafter referred to as "fluid") in a constant circulation path; A temperature regulating element located on a circulation path of the fluid pumped by the pump, for regulating the fluid to a required temperature; A distributor for dividing and distributing the fluid adjusted to the temperature required from the temperature regulating element to the injection mold side; And a bubble collecting element located on the circulation path and provided to collect and discharge the bubbles generated by the continuous circulation of the fluid. .

In addition, the injection mold temperature controller according to the third aspect of the present invention for achieving the object as described above, the pump for pumping to circulate a temperature control fluid (hereinafter referred to as "fluid") in a constant circulation path; A temperature regulating element located on a circulation path of the fluid pumped by the pump, for regulating the fluid to a required temperature; And a distributor for dividing and distributing the fluid adjusted to the required temperature from the temperature control element to the injection mold side. It includes, The temperature control element, Bubble collecting portion provided to collect and discharge the generated bubbles; And a temperature adjusting unit provided to adjust the temperature of the fluid and to send it to the distributor side. It includes.

The temperature regulating element has a cooling function for cooling the fluid to the required temperature and a function for storing the fluid.

According to the present invention there is an effect of improving the reliability of the temperature control of the injection mold by easily removing the bubbles generated by the continuous operation of the temperature controller using gravity.

1 is a configuration diagram for a temperature controller for injection mold according to the prior art.
2 is a block diagram of a temperature controller for injection mold according to a first embodiment of the present invention.
FIG. 3 is a schematic view showing a characteristic portion of the thermostat of FIG.
4 is a block diagram of a temperature controller according to a second embodiment of the present invention.
5 is a configuration diagram for a temperature controller according to a third embodiment of the present invention.
6 is a block diagram of a temperature controller according to a fourth embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. For simplicity of description, redundant description is omitted or compressed as much as possible.

≪ Embodiment 1 >

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.

The thermostat 200 according to the present embodiment, as shown in Figure 2, the fluid tank 210, the detector 220, the opening and closing valve 230, the pump 240, the temperature control part 250, foam The pipe 260, the distributor 270, the controller 280, and the like are configured.

The fluid tank 210 is provided for storing a predetermined amount or more of the temperature control fluid (hereinafter, abbreviated as 'fluid') supplied through the supply line PL. It is common to use water as a fluid here, but any medium provided to the injection mold (M) side to control the temperature of the injection mold (M) may be preferably applied.

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

The open / close valve 230 is provided to open and close the supply line PL for supplying a fluid to the fluid tank 210.

The pump 240 passes through the fluid tank 210-> pump 240-> temperature control part 250-> distributor 270-> injection mold (M) sequentially and then back to the fluid tank 210 It is provided to forcibly circulate the fluid on the subsequent circulation path of the fluid.

The temperature regulating portion 250 is provided to adjust the fluid to the required temperature, and includes a cooler 251 and a heater 252.

Cooler 251 is provided as a temperature control element for lowering the fluid to the required temperature in order to lower the temperature of the injection mold (M). In addition, the cooler 251 is to collect the bubbles generated by the continuous operation of the thermostat 200, which will be described in detail later.

The heater 252 is provided as a temperature control element for heating the fluid to a required temperature in order to keep the injection mold M above a predetermined temperature.

The bubble pipe 260 is connected to the cooler and the other side is connected to the fluid tank in order to send the bubbles collected by the cooler 251 to the fluid tank.

The distributor 270 is provided to divide and distribute the fluid whose temperature is controlled in the temperature control part 250 to the injection mold M side. The distributor 270 may be integrally formed with the heater 252 according to the implementation.

The controller 280 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 280 controls the on / off valve 230 to open the supply line PL when the amount of the fluid sensed from the detector 220 is below a predetermined level so that the fluid is supplied to the fluid tank 210. If the amount of fluid sensed from the detector 220 is above a certain level, the on / off valve 230 is controlled to close the supply line PL to block the supply of the fluid. Further, according to the implementation, the degree of heating of the heater 252 by the controller 280 according to a command input from the user so that the temperature of the fluid can be adjusted to the temperature intended by the user through the controller 280 or the like. It is also possible to control the degree of cooling of the cooler 251.

When the user turns on the temperature controller 200, the controller 280 determines the amount of fluid stored in the fluid tank 210 sensed by the detector 220, and then opens and closes the fluid tank 210 if there is no fluid or lack thereof. After opening the valve 230 and supplying the fluid, when the fluid is above a certain level, the closing valve 230 is closed and the pump 240 is operated, and the fluid is present in the fluid tank 210 above the predetermined level. If it operates the pump 240 in a closed state of the shut-off valve 230.

In this case, since the fluid circulating continuously by the operation of the pump 240 may be difficult to reach the required temperature from the cooler 251 or the heater 252, the fluid 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 fluid on the circulation path along the bypass path BL during the initial operation.

Initial operation is made so that the fluid 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 fluid is circulated through the normal circulation path via the injection mold.

Of course, if the amount of the fluid stored in the fluid tank 210 is reduced to below a certain lower limit by the continuous operation of the temperature controller 200, the detector 200 detects this and sends the detected information to the controller 280, The controller 280 controls the on-off valve 230 according to the corresponding information so that the fluid is supplied to the fluid tank 210 through the supply line (PL). When the fluid tank 210 is filled with a certain upper limit fluid by the continuous supply of fluid, the sensor 200 detects this and then sends the detected information to the controller 280. Accordingly, the controller 280 opens and closes the valve ( 230 to control the supply line PL is made.

Meanwhile, the fluid tank 210 and the cooler 251 having the characteristics of the present invention will be described in more detail with reference to the characteristic diagram of FIG. 3.

The fluid tank 210 has an outlet 211 for discharging bubbles in the upper portion thereof and a connector 212 connected to the bubble pipe 260.

The cooler 251 includes a bubble collecting part 251a and a cooling part 251b serving as a temperature control part.

The bubble collecting unit 251a is positioned above the cooling unit 251b and collects the bubbles collected in the input port 251a-1 and the internal space S through which the fluid from the pump 240 is input. It has a piping port (251a-2) connected to the foam pipe 260 to send to the fluid tank 210 through 260. The internal space S of the bubble collecting unit 251a is located below the connector 212 of the fluid tank 210 in order to use a natural law in which the fluid sinks downward by gravity and light bubbles rise. do. That is, the height of the internal space (S) is lower than the height of the point where the foam pipe 260 is connected to the fluid tank (210).

The cooling unit 251 b cools the fluid and outputs it to the distributor 270 side (more specifically, the heater) through the output port 251 b-1 located below.

Subsequently, the bubble collection and discharge made in the fluid tank 210 and the cooler 251 as described above will be described.

Foam mixed in the fluid does not flow downward from the fluid input from the pump 240 into the internal space S of the bubble collecting unit 251a due to the gravity difference due to the density difference, and the internal space of the bubble collecting unit 251a does not descend. Collected in S, only the fluid may be output through the output port 251b-1 through the cooling unit 251b. The bubbles collected in the inner space S are pushed by the fluid input into the inner space S by the strong pumping of the pump 240 and move to the fluid tank 210 through the bubble pipe 260.

Subsequently, when fluid is supplied to the fluid tank 210 through the supply line PL, bubbles are discharged through the outlet 211. At this time, the discharge valve 290 for opening and closing the outlet 211 is a controller ( Controlled by 280 to open the outlet 211.

As described, since the bubbles mixed in the circulating fluid are continuously removed, the fluid moving through the cooler 251, the heater 252, and the distributor 270 to the injection mold M has almost no bubble. do.

On the other hand, in the present embodiment, but the bubble collecting function is given to the cooler 251, it may be considered to give a bubble collecting function to the heater which is another of the temperature control element according to the implementation.

Second Embodiment

According to the first embodiment, the cooler 251 is functioning as a bubble collecting element. In consideration of the case of the temperature controller which needs to include only the heater, the configuration of the cooler is unnecessary. Therefore, as shown in FIG. 4, a configuration in which a separate bubble collecting element 251A without a cooling function is connected in parallel with the heater 252A to collect bubbles and send the bubbles to the fluid tank 210A may be considered. .

Of course, even if both the cooler and the heater should be provided, it will be possible to configure a separate bubble trap element.

Third Embodiment

In the first and second embodiments, the collected bubbles are sent to the fluid tanks 210 and 210A, and then discharged. However, as shown in FIG. 5, the bubbles collected by the temperature regulating element 251B are fluids. It may also be considered to implement to discharge through the discharge path (OL) from the temperature control element (251B) in accordance with the supply point of. And such an example can be preferably applied even if the bubble is collected by a separate bubble collecting element irrelevant to the temperature control.

<Fourth Embodiment>

 6 is an example in which the cooling unit 611 is integrally formed in the fluid tank 610 and the fluid tank 610 collects the bubbles by itself and then discharges them through the discharge path OL.

According to this embodiment, by configuring the cooling unit 611 integrally with the fluid tank 610, the fluid tank 610 not only serves as a temperature control element having a cooling function, but also has a fluid storage function, There is no need to configure a chiller or foam piping, which leads to a reduction in production cost.

Therefore, 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 the preferred examples of the present invention, the present invention is limited to the above embodiments. It should not be understood to be limited, and the scope of the present invention should be understood as the following claims and equivalent concepts.

200: temperature controller
210: fluid tank
211 outlet
240 pump
250: temperature control part
251: cooler
251a: bubble collecting unit
251a-1: Input port 251a-2: Piping port
S: interior space
260: bubble piping
270 divider

Claims (8)

A fluid tank for storing a supplied temperature control fluid (hereinafter referred to as a 'fluid');
A pump for pumping the fluid stored in the fluid tank to circulate in a constant circulation path;
A temperature control element positioned on a circulation path of the fluid pumped by the pump to trap bubbles and to adjust the fluid to the required temperature;
A distributor for dividing and distributing the fluid adjusted to the temperature required from the temperature regulating element to the injection mold side; And
A bubble pipe connected to one side of the temperature control element and the other side to the fluid tank for sending the bubbles collected by the temperature control element to the fluid tank; / RTI &gt;
The temperature control element,
A bubble collecting unit for collecting the bubbles in an inner space and sending the collected bubbles to the fluid tank through the bubble pipe; And
A temperature controller for controlling the temperature of the fluid and sending it to the distributor side; &Lt; RTI ID = 0.0 &gt;
Temperature controller for injection mold. The method of claim 1,
The temperature regulating element is a cooler for cooling the fluid to the required temperature.
Temperature controller for injection mold. delete The method of claim 1,
The bubble collecting unit is located above the temperature control unit, and has an input port through which the fluid is input and a piping port for sending the bubbles collected in the inner space to the bubble pipe,
The height of the inner space of the bubble collecting unit is lower than the height of the point where the bubble pipe is connected to the fluid tank
Temperature controller for injection mold. The method of claim 1,
The fluid tank has a discharge port for discharging the bubbles contained in the fluid tank when the fluid is supplied to the fluid tank through a supply line
Temperature controller for injection mold. A pump for pumping a temperature controlling fluid (hereinafter referred to as 'fluid') to circulate in a constant circulation path;
A temperature regulating element located on a circulation path of the fluid pumped by the pump, for regulating the fluid to a required temperature;
A distributor for dividing and distributing the fluid adjusted to the temperature required from the temperature regulating element to the injection mold side; And
A bubble collecting element located on the circulation path and provided to collect and discharge bubbles generated by continuous circulation of the fluid; &Lt; RTI ID = 0.0 &gt;
Temperature controller for injection mold. A pump for pumping a temperature controlling fluid (hereinafter referred to as 'fluid') to circulate in a constant circulation path;
A temperature regulating element located on a circulation path of the fluid pumped by the pump, for regulating the fluid to a required temperature; And
A distributor for dividing and distributing the fluid adjusted to the temperature required from the temperature regulating element to the injection mold side; Including,
The temperature control element,
A bubble collecting part provided to collect and discharge the generated bubbles; And
A temperature controller provided to control the temperature of the fluid and to send it to the distributor side; &Lt; RTI ID = 0.0 &gt;
Temperature controller for injection mold. 8. The method according to claim 6 or 7,
The temperature regulating element has a cooling function for cooling the fluid to the required temperature and a function for storing the fluid.
Temperature controller for injection mold.

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