KR101393350B1 - Temperature control apparatus for mold - Google Patents

Temperature control apparatus for mold Download PDF

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Publication number
KR101393350B1
KR101393350B1 KR1020130037959A KR20130037959A KR101393350B1 KR 101393350 B1 KR101393350 B1 KR 101393350B1 KR 1020130037959 A KR1020130037959 A KR 1020130037959A KR 20130037959 A KR20130037959 A KR 20130037959A KR 101393350 B1 KR101393350 B1 KR 101393350B1
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South Korea
Prior art keywords
cooling water
mold
temperature
tank
pipe
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KR1020130037959A
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Korean (ko)
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김영수
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김영수
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7312—Construction of heating or cooling fluid flow channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7331—Heat transfer elements, e.g. heat pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1753—Cleaning or purging, e.g. of the injection unit
    • B29C2045/1754—Cleaning or purging, e.g. of the injection unit purging cooling channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76531—Temperature

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The present invention relates to a temperature control device for an injection mold. The temperature control device rapidly adjusts the temperature of a circulating coolant to a set temperature by selectively applying direct and indirect cooling methods by the temperature of the coolant circulating in a supplementary water tank, and improves productivity by reducing the cycle time of injected materials by rapidly adjusting the temperature of a mold to a set temperature.

Description

사출금형의 온도조절장치{Temperature control apparatus for mold}[0001] The present invention relates to a temperature control apparatus for a mold,

본 발명은 사출금형의 온도조절장치에 관한 것으로, 금형측에서 리턴되는 냉각수의 온도를 직접 및 간접방식으로 조절하여 단시간내 금형의 온도를 조절할 수 있는 사출금형의 온도조절장치에 관한 것이다.
The present invention relates to a temperature regulating device for an injection mold, and more particularly, to a temperature regulating device for an injection mold capable of regulating the temperature of the mold in a short time by directly or indirectly regulating the temperature of the cooling water returned from the mold.

도 1은 종래의 온도조절 장치를 보인 것으로 온도조절기(A)는, 입수 솔레노이드밸브(1)를 갖춘 냉매 입수라인(2)에 압축공기 솔레노이드밸브(3)를 갖춘 압축공기라인(4)이 연결되어 수위센서(5)를 갖춘 보조탱크(6)에 연결된다. 그리고, 상기 보조탱크(6)의 공급라인(7a)은 히터탱크(8)의 다른 공급라인(7b)과 병렬 연결되어 펌프(9)에 연결되고, 상기 펌프(9)의 출구라인(10)은 금형(11)으로 연결되는 한편, 이 금형(11)의 복귀라인(12)은 히터탱크(8)에 연결되면서 배수 솔레노이드 밸브(13)를 갖춘 배수라인(14)이 연결된다. 그리고 상기 금형(11)의 복귀라인(12)에는 온도감지센서(15)와 체크밸브(16)가 설치되어 있으며, 히터탱크(8)에는 솔레노이드밸브(17)를 갖춘 드레인라인(18)이 연결되어 있고, 상기 입수라인(2)의 입수 솔레노이드밸브(1)의 앞쪽에는 온도감지센서(15)가 배치되어 있다.FIG. 1 shows a conventional temperature regulating device. The temperature regulator A has a compressed air line 4 having a compressed air solenoid valve 3 in a refrigerant intake line 2 provided with an intake solenoid valve 1, And is connected to an auxiliary tank 6 equipped with a water level sensor 5. [ The supply line 7a of the auxiliary tank 6 is connected to the pump 9 in parallel with another supply line 7b of the heater tank 8 and is connected to the outlet line 10 of the pump 9, The return line 12 of the mold 11 is connected to the heater tank 8 and the drain line 14 having the drain solenoid valve 13 is connected. A temperature sensor 15 and a check valve 16 are installed on the return line 12 of the mold 11. A drain line 18 having a solenoid valve 17 is connected to the heater tank 8, And a temperature sensing sensor 15 is arranged in front of the intake solenoid valve 1 of the intake line 2.

이와 같은 종래의 온도조절 장치의 작동시는 즉, 금형(11)의 온도가 상승되어 일정한 설정온도로 낮추기 위해서는, 냉매입수라인(2)의 입수솔레노이드밸브(1)를 개방시켜 펌프(9)를 통해 금형(11)으로 냉매(일반적인 '냉각수'를 사용한다)가In order to raise the temperature of the metal mold 11 to a predetermined set temperature during operation of the conventional temperature control apparatus, the intake solenoid valve 1 of the refrigerant supply line 2 is opened and the pump 9 is opened A coolant (general 'cooling water' is used as the mold 11)

공급되는데, 이때 냉매의 흐름은 보조탱크(6)→공급라인(7a)→펌프(9)→금형(11)→복귀라인(12)→냉매 배수라인(14)으로 흘러 금형(11)의 온도를 설정온도로 낮추게 된다. 이때, 입수 솔레노이드밸브(1)와 배수 솔레노이드밸브(13)는 개방되고, 나머지 드레인 솔레노이드밸브(17)와 체크밸브(16) 및 압축공기 솔레노이드밸브(3)는 폐쇄된다. 그리고, 금형(11)의 온도가 하강되어 설정온도로 올리기 위해 히터탱크(8)의 온수를 금형(11)으로 공급하기 위해서는, 히터탱크(8)→연결 공급라인(7b)→펌프(9)→금형(11)→복귀라인(12)→체크밸브(16)를 따라 온수가 공급된다.The refrigerant flows into the auxiliary tank 6 → the supply line 7a → the pump 9 → the mold 11 → the return line 12 → the refrigerant discharge line 14 and the temperature of the mold 11 To a set temperature. At this time, the intake solenoid valve 1 and the drain solenoid valve 13 are opened and the remaining drain solenoid valve 17, the check valve 16 and the compressed air solenoid valve 3 are closed. In order to supply the hot water of the heater tank 8 to the mold 11 in order to raise the temperature of the mold 11 to the set temperature, the heater tank 8 → the connection supply line 7b → the pump 9, The mold 11, the return line 12, and the check valve 16, as shown in Fig.

이때, 체크밸브(16)만 개방되고, 나머지 입수 솔레노이드밸브(1), 드레인 솔레노이드밸브(17), 배수 솔레노이드밸브(13) 및 압축공기 솔레노이드밸브(3)는 모두 폐쇄된다.At this time, only the check valve 16 is opened and all the remaining intake solenoid valve 1, drain solenoid valve 17, drain solenoid valve 13 and compressed air solenoid valve 3 are closed.

그리고, 동절기의 동파방지 또는 금형장치의 정비 및 점검을 위해 냉수 및 온수를 제거하기 위한 잔수 제거는, 압축공기라인(4)→보조탱크(6)→연결 공급라인(7b)→히터탱크(8)→드레인라인(18)과; 압축공기라인(4)→보조탱크(6)→공급라인(7a)→펌프(9)→금형(11)→복귀라인(12)→배수라인(14)을 따라 잔수를 배출시키게 된다.The remaining water for removing the cold water and the hot water for the prevention of freeze of winter in the winter season or for maintenance and inspection of the mold apparatus is removed from the compressed air line 4 → the auxiliary tank 6 → the connection supply line 7b → the heater tank 8 - > drain line 18; The residual water is discharged along the compressed air line 4 → the auxiliary tank 6 → the supply line 7a → the pump 9 → the mold 11 → the return line 12 → the drain line 14. [

여기서, 동절기 운전중 금형(11)의 냉각시는, 저온의 냉매가 보조탱크(6)에 입수되어 바로 금형(11)으로 유입될 경우, 급격한 냉각작용이 발생되어 제어 불능상태가 된다. 그러므로, 금형(11)의 온도가 설정치 이상 상승시는, 입수솔레노이드밸브(1)와 배수 솔레노이드밸브(13)가 개방되어 냉수가 보조탱크(6)로 입수되고, 입수된 냉매는 펌프(9)의 흡입력으로 공급라인(7a,7b)들을 통하여 냉수와 온수를 동시에 흡입,토출하여 상기 금형(11)을 냉각시키게 된다. 즉 이는 냉수와 온수를 동시에 흡입,혼합하여 토출함으로써, 동절기 냉매수온이 저온일지라도 금형(11)의 온도가 급격히 하강하는 것을 방지할 수 있게 된다.Here, at the time of cooling the mold 11 during the winter season, when the coolant of low temperature is taken into the auxiliary tank 6 and immediately introduced into the mold 11, a sudden cooling action is generated and the control becomes impossible. Therefore, when the temperature of the mold 11 rises above the set value, the intake solenoid valve 1 and the drain solenoid valve 13 are opened to receive cold water into the auxiliary tank 6, The mold 11 is cooled by sucking and discharging cold water and hot water through the supply lines 7a and 7b at the same time as the suction force. That is, it is possible to prevent the temperature of the mold 11 from dropping sharply even if the coolant temperature in the winter season is low, by sucking and mixing the cold water and hot water at the same time.

그러나, 이와 같은 종래의 온도조절 장치는, 온도조절기와 금형 사이에 각각 하나의 출구라인과 복귀라인만이 연결되어서 금형의 온도를 단순히 일정하게 유지되도록 제어하는데, 이와 같이 온도 제어되는 금형으로는 다양하고 복잡한 구조 및However, in the conventional temperature control device, only one exit line and a return line are connected between the temperature controller and the mold to control the temperature of the mold to be kept constant. Complex structures and

형상을 갖는 사출물을 성형하기에는 많은 어려움이 있다는 문제가 있었다.There is a problem that it is difficult to form an injection-molded article having a shape.

즉, 다양하고 복잡한 구조 및 형상을 갖는 제품은 그 부위마다의 특성을 고려하여 금형의 온도를 달리 조절하여야 하는데, 전술한 종래의 온도조절기는 금형의 온도를 설정된 온도만으로 유지시키기 때문에 어렵고, 전술한 온도조절기를 여러개 연결하는 경우에는 그에 따른 제반설비가 커지고, 고가의 설치비용이 발생되는 단점이 있었다.
That is, a product having a variety of complicated structures and shapes must be adjusted to different mold temperatures in consideration of the characteristics of each part. The conventional temperature controller described above is difficult because it keeps the temperature of the mold at a set temperature only, When a plurality of temperature regulators are connected, there is a disadvantage in that all the required facilities are increased and expensive installation costs are incurred.

특허등록번호 제10-0424091호Patent Registration No. 10-0424091

상기의 문제점을 해결하기 위한 본 발명은 성형하고자 하는 제품의 특성에 따라 금형의 온도를 선택적으로 조절할 수 있어, 제품의 생산성을 향상시킴과 아울러 제품의 신뢰성을 확보할 수 있는 사출금형의 온도조절장치를 제공한다.
According to an aspect of the present invention, there is provided a mold temperature control apparatus for an injection mold capable of selectively controlling a temperature of a mold according to characteristics of a product to be molded to improve productivity of the product, Lt; / RTI >

상기의 과제를 해결하기 위한 본 발명의 사출금형의 온도조절장치는 금형과;상기 금형측으로 냉각수를 공급하는 공급라인에 설치된 히팅탱크와; 상기 금형을 통과한 냉각수가 회수되는 회수라인에 연결된 보충수탱크와; 상기 보충수탱크와 히팅탱크 사이에 연결관이 설치되고, 상기 연결관에 냉각수를 순환되게 설치된 펌프와; 상기 보충수탱크에는 냉각수를 보충하는 냉각수공급관이 설치되며, 상기 보충수탱크내에 채워진 냉각수를 배출시키는 냉각수회수관이 연결되고, 상기 냉각수공급관과 냉각수회수관에 연결됨과 아울어 상기 보충수탱크내에 지그재그로 설치되어 상기 보충수탱크내 냉각수와 열교환을 유도하는 열교환유도관과; 상기 열교환유도관에 설치되며, 상기 열교환유도관측으로 냉각수를 공급 또는 차단하는 제1솔레노이드밸브와; 상기 냉각수회수관에 설치되며, 상기 보충수탱크내 냉각수를 배출 또는 차단하는 제2솔레노이드밸브와; 상기 냉각수공급관에 설치되며, 상기 보충수탱크내 냉각수의 역류를 방지하는 체크밸브로 구성된다.
According to an aspect of the present invention, there is provided an apparatus for controlling temperature of an injection mold, comprising: a mold; a heating tank installed in a supply line for supplying cooling water to the mold; A replenishing water tank connected to a collecting line through which the cooling water having passed through the mold is collected; A pump provided with a connection pipe between the make-up water tank and the heating tank and circulating the cooling water through the connection pipe; A cooling water return pipe for discharging the cooling water filled in the replenishing water tank is connected to the replenishing water tank and a cooling water supply pipe for replenishing the cooling water is connected to the cooling water supply pipe and the cooling water return pipe, A heat exchange induction pipe installed in the makeup water tank to induce heat exchange with the cooling water in the makeup water tank; A first solenoid valve installed in the heat exchange induction pipe for supplying or blocking the cooling water to the heat exchange induction pipe side; A second solenoid valve installed in the cooling water recovery pipe for discharging or shutting off the cooling water in the replenishing water tank; And a check valve installed in the cooling water supply pipe for preventing the reverse flow of the cooling water in the makeup water tank.

따라서, 본 발명 사출금형의 온도조절장치는 보충수탱크내로 순환된 냉각수의 온도에 따라 직접 및 간접 냉각방식을 선택적으로 적용하여, 단시간내 순환되는 냉각수의 온도를 설정온도로 맞출 수 있는 것으로, 결국 상기 금형의 온도를 단시간내 설정온도로 맞출 수 있어 사출물의 싸이클타임을 줄여 생산성의 향상시킬 수 있는 효과가 있다.
Accordingly, the temperature control device of the injection mold according to the present invention can directly and indirectly apply the cooling method selectively according to the temperature of the cooling water circulated in the makeup water tank, so that the temperature of the cooling water circulated in a short time can be set to the set temperature. It is possible to adjust the temperature of the mold to a preset temperature for a short time, thereby reducing the cycle time of the injection molding and improving the productivity.

도 1은 종래의 온도조절장치를 보인 개략도,
도 2은 본 발명에 따른 온도조절장치를 보인 개략도.1 is a schematic view showing a conventional thermostat,
2 is a schematic view showing a temperature control device according to the present invention.

이하, 첨부한 도면을 이용하여 본 발명을 좀더 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

도 2에 도시된 바와 같이, 본 발명의 사출금형의 온도조절장치는 금형(50)과, 상기 히팅탱크(60)와, 상기 금형(50)과 히팅탱크(60) 사이에 연결되는 공급라인(90)과, 냉각수를 보충하는 냉각수공급관(120)과 냉각수회수관(130)에 연통되는 보충수탱크(70)와, 상기 금형(50)과 보충수탱크(70) 사이에 연결되는 회수라인(100)과, 냉각수를 적정온도로 가열하는 히팅탱크(60)와, 상기 보충수탱크(70)와 히팅탱크(60) 사이에 연결되는 연결관(110)과, 상기 연결관(110)에 설치되며, 냉각수가 일정압으로 강제로 순환시키는 펌프(80)와, 상기 냉각수공급과 냉각수회수관(130)에 연통되며, 상기 보충수탱크(70)내에 냉각수의 열교환시키는 열교환유도관(140)과, 상기 열교환유도관(140)에 설치되는 제1솔레노이드밸브(150)와, 상기 냉각수회수관(130)에 설치되는 제2솔레노이드밸브(160)로 구성된다.2, the temperature control device of the injection mold according to the present invention includes a mold 50, a heating tank 60, and a supply line (not shown) connected between the mold 50 and the heating tank 60 A recovery water tank 70 communicating with the cooling water return pipe 130 and a recovery line 70 connected between the mold 50 and the makeup water tank 70 A heating tank 60 for heating the cooling water to an appropriate temperature; a connection pipe 110 connected between the makeup water tank 70 and the heating tank 60; A heat exchange induction pipe 140 communicating with the cooling water supply and cooling water recovery pipe 130 for exchanging the cooling water in the supplement water tank 70; A first solenoid valve 150 installed in the heat exchange induction pipe 140 and a second solenoid valve 160 installed in the cooling water recovery pipe 130 It is sex.

상기 금형(50)은 통상적으로 가동금형과 고정금형을 구분될 수 있다.The mold 50 can be generally divided into a movable mold and a stationary mold.

상기 히팅탱크(60)는 내부에 히터가 설치되어 사출성형시 냉각수를 소정온도로 높이기 위한 것이다.The heating tank 60 is provided with a heater to increase the cooling water to a predetermined temperature during injection molding.

상기 공급라인(90)은 금형(50)과 히팅탱크(60) 사이에 설치되며, 압축공기를 연결할 수 있는 볼밸브(91)가 구비된다.The supply line 90 is provided between the mold 50 and the heating tank 60 and includes a ball valve 91 for connecting compressed air.

그리고 상기 공급라인(90)과 금형(50) 사이에는 분배기(도면상에 도시하지 않음)가 설치될 수 있는 것이다.A distributor (not shown in the figure) may be installed between the supply line 90 and the mold 50.

상기 회수라인(100)에는 금형(50)을 통과한 냉각수의 온도를 감지하는 온도센서(101)가 설치된다.A temperature sensor 101 for sensing the temperature of the cooling water having passed through the mold 50 is installed in the recovery line 100.

상기 보충수탱크(70)는 냉각수를 일정량 보관가능하게 구비되며, 내부에 냉각수의 수위를 감지하는 레벨센서(71)가 설치된다.The replenishing water tank 70 is provided to store a certain amount of cooling water, and a level sensor 71 for sensing the level of the cooling water is installed in the replenishing water tank 70.

그리고 상기 보충수탱크(70)는 회수라인(100)에 연통되어 상기 금형(50)측에서 냉각수가 회수된다.The replenishing water tank 70 communicates with the recovery line 100, and the cooling water is recovered from the mold 50 side.

상기 냉각수공급관(120)은 도면상에 도시하지 않았지만, 수조측에서 냉각수가 공급되는 것이다.The cooling water supply pipe 120 is not shown in the figure but is supplied with cooling water from the water tank side.

그리고 상기 냉각수공급관(120)측에는 체크밸브(121)가 설치되어 상기 보충수탱크(70)측에서 냉각수가 역류되는 것을 방지한다.A check valve 121 is provided on the cooling water supply pipe 120 side to prevent the cooling water from flowing back from the supplementary water tank 70 side.

상기 냉각수회수관(130)은 보충수탱크(70)에 연통되며, 수조측으로 냉각수를 회수되도록 한다.The cooling water recovery pipe 130 communicates with the replenishing water tank 70 so that the cooling water is recovered to the water tank side.

그리고 상기 냉각수회수관(130)에는 먼저 스트레나 또는 필터 등의 이물질걸름수단(170)이 구비되며, 상기 이물질걸름수단(170)에서 일정간격을 두고 제2솔레노이드밸브(160)가 설치된다.The coolant return pipe 130 is provided with a foreign matter filtering means 170 such as a strainer or a filter and a second solenoid valve 160 is installed at a predetermined interval in the foreign matter filtering means 170.

상기 열교환유도관(140)의 일단은 냉각수공급관(120)에 연결되고, 타단은 냉각수회수관(130)에 연결되며, 일부가 상기 보충수탱크(70)내에 지그재그로 설치된다.One end of the heat exchange induction pipe 140 is connected to the cooling water supply pipe 120 and the other end thereof is connected to the cooling water recovery pipe 130 and a part of the heat exchange induction pipe 140 is staggered in the supplement water tank 70.

그리고 상기 열교환유도관(140)은 냉각수공급관(120)에 연결되는 라인상에 제1솔레노이드밸브(150)가 설치되어 상기 제1솔레노이드밸브(150)에 의해 상기 보충수탱크(70)내의 냉각수의 열교환을 유도하게 된다.The heat exchange induction pipe 140 has a first solenoid valve 150 installed on a line connected to the cooling water supply pipe 120 so that the first solenoid valve 150 communicates the coolant in the makeup water tank 70 Thereby inducing heat exchange.

상기 펌프(80), 히팅탱크(60), 온도센서(101), 레벨센서(71), 제1,2솔레노이드밸브(150,160)를 콘트롤하는 제어부가 구비된다.
상기에서 보는 바와 같이, 본 발명은 사출금형의 온도조절장치의 작용 및 효과를 설명하면, 먼저 상기 냉각수공급관(120)을 통해 냉각수가 상기 보충수탱크(70)에 일정량 충진된 상태에서, 상기 히팅탱크(60)에서 냉각수를 소정온도로 높이면서 상기 금형(50)의 온도를 일정하게 맞추기 위해 상기 펌프(80)에 의해 냉각수가 금형(50), 회수라인(100), 보충수탱크(70), 연결관(110), 공급라인(90), 히팅탱크(60)측으로 순차적으로 순환시켜 상기 금형(50)의 온도를 일정하게 유지하게 된다. 이때 상기 히팅탱크(60)는 냉각수가 일정온도에 도달하면 동작이 정지된다.A controller for controlling the pump 80, the heating tank 60, the temperature sensor 101, the level sensor 71, and the first and second solenoid valves 150 and 160 is provided.
As described above, according to the present invention, the function and effect of the temperature control device of the injection mold will be described. First, in a state where the cooling water is filled in the makeup water tank 70 through the cooling water supply pipe 120, The cooling water is supplied to the metal mold 50, the recovery line 100, the replenishing water tank 70, and the replenishing water tank 70 by the pump 80 in order to raise the temperature of the metal mold 50 to a predetermined temperature, The connection pipe 110, the supply line 90, and the heating tank 60 so that the temperature of the metal mold 50 is kept constant. At this time, the operation of the heating tank (60) is stopped when the cooling water reaches a certain temperature.

삭제delete

이런 상태에서 상기 금형(50)측에 사출물이 주입되어 상기 금형(50)에서 사출물이 성형되는 과정에서, 사출물에 의해 금형(50)의 온도가 설정온도 이상으로 상승됨과 아울러 금형(50)을 냉각시키는 냉각수 역시 온도가 상승되어 상기 회수라인(100)을 거쳐 상기 보충수탱크(70)측으로 이송된다. 이를 상기 회수라인(100)에 설치된 온도센서(101)가 온도를 감지하여 상기 제어부측으로 전달하게 된다. 이때 상기 제어부의 신호에 의해 냉각수의 온도에 따라 냉각수를 간접 및 직접 냉각방식을 선택적으로 적용할 수 있는 것이다.In this state, when the injection mold is injected into the mold 50 to mold the mold, the temperature of the mold 50 is raised to a predetermined temperature or higher by the injection molding, and the mold 50 is cooled The temperature of the cooling water is also raised to the side of the replenishing water tank 70 via the recovery line 100. The temperature sensor 101 installed on the recovery line 100 senses the temperature and transmits the sensed temperature to the control unit. At this time, depending on the signal of the control unit, the indirect cooling method and the direct cooling method can be selectively applied according to the temperature of the cooling water.

먼저 간접 냉각방식을 설명하면, 상기 제어부에서 제1솔레노이드밸브(150)를 오픈(open)시킴과 아울러 제2솔레노이드밸브(160)를 크로스(close)시키면, 냉각수가 상기 냉각수공급관(120)을 통해 상기 열교환유도관(140)을 따라 순환되면서 상기 냉각수회수관(130)측으로 이동된다. 이 과정에서 상기 보충수탱크(70)측으로 순환된 냉각수가 상기 열교환유도관(140)에 접촉되면서 열교환이 이루어져 단시간내 순환되는 냉각수의 온도를 설정온도로 맞출 수 있는 것이다.First, when the control unit opens the first solenoid valve 150 and closes the second solenoid valve 160, the cooling water flows through the cooling water supply pipe 120 The refrigerant is circulated along the heat exchange induction pipe 140 and is moved to the cooling water recovery pipe 130 side. In this process, the cooling water circulated to the makeup water tank 70 side is brought into contact with the heat exchange induction pipe 140 to perform heat exchange, so that the temperature of the cooling water circulated in a short time can be set to the set temperature.

그리고, 직접냉각방식을 설명하면, 상기 제어부에서 상기 제1솔레노이드밸브(150)를 크로스시킴과 아울러 상기 제2솔레노이드밸브(160)를 오픈시키면, 새로운 냉각수가 상기 냉각수공급관(120)을 통해 상기 보충수탱크(70)내로 공급됨과 아울러 상기 냉각수회수관(130)측으로 배출되는데, 이와 동시에 상기 금형(50)측에서 순환된 냉각수가 상기 보충수탱크(70)내로 유입되면서 새로운 냉각수와 혼합되어 단시간내 순환되는 냉각수의 온도를 설정온도로 맞출 수 있는 것이다.When the first solenoid valve 150 is crossed by the control unit and the second solenoid valve 160 is opened, new cooling water is supplied through the cooling water supply pipe 120, At the same time, the cooling water circulated at the mold 50 flows into the replenishing water tank 70 and mixed with the new cooling water to be discharged into the water tank 70 for a short period of time The temperature of the circulating cooling water can be set to the set temperature.

이와 같이, 본 발명의 온도조절장치는 금형(50)측에서 순환된 냉각수의 온도에 따라 직접 및 간접 냉각방식을 선택적으로 적용하여, 단시간내 순환되는 냉각수의 온도를 설정온도로 맞출 수 있는 것으로, 결국 상기 금형(50)의 온도를 단시간내 설정온도로 맞출 수 있어 사출물의 싸이클타임을 줄여 생산성의 향상시킬 수 있는 것이다.
As described above, according to the temperature control device of the present invention, the direct or indirect cooling method is selectively applied according to the temperature of the cooling water circulated on the mold 50 side, and the temperature of the cooling water circulated in a short time can be set to the set temperature. As a result, the temperature of the mold 50 can be set to the preset temperature for a short time, thereby reducing the cycle time of the injection molding and improving the productivity.

상기에서 설명한 바와 같이 본 발명의 과제와 동일한 범위 내에서 다양한 설계 변경을 시도할 수도 있을 것이나, 이러한 설계변경으로 인해 본 발명에서 전혀 예상치 못한 새로운 효과가 나타나지 않는 한, 본 발명의 권리범위를 벗어나지 못할 것이다.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. will be.

70: 보충수탱크 80: 펌프
140: 열교환유도관 150: 제1솔레노이드밸브
160: 제2솔레노이드밸브70: replenishing water tank 80: pump
140: heat exchange induction pipe 150: first solenoid valve
160: Second solenoid valve

Claims (2)

금형(50)과;
상기 금형(50)측으로 냉각수를 공급하는 공급라인(90)에 연결된 히팅탱크(60)와;
상기 금형(50)을 통과한 냉각수가 회수되는 회수라인(100)에 연결된 보충수탱크(70)와;
상기 보충수탱크(70)와 히팅탱크(60) 사이에 연결관(110)이 설치되고, 상기 연결관(110)에 냉각수를 순환되게 설치된 펌프(80)와;
상기 보충수탱크(70)에는 냉각수를 보충하는 냉각수공급관(120)이 설치되며, 상기 보충수탱크(70)내에 채워진 냉각수를 배출시키는 냉각수회수관(130)이 연결되고, 상기 냉각수공급관(120)과 냉각수회수관(130)에 연결됨과 아울러 상기 보충수탱크(70)내에 지그재그로 설치되어 상기 보충수탱크(70)내 냉각수와 열교환을 유도하는 열교환유도관(140)과;
상기 열교환유도관(140)에 설치되며, 상기 열교환유도관(140)측으로 냉각수를 공급 또는 차단하는 제1솔레노이드밸브(150)와;
상기 냉각수회수관(130)에 설치되며, 상기 보충수탱크(70)내 냉각수를 배출 또는 차단하는 제2솔레노이드밸브(160)와;
상기 냉각수공급관(120)에 설치되며, 상기 보충수탱크(70)내 냉각수의 역류를 방지하는 체크밸브(121)로 구성된 것을 특징으로 하는 사출금형의 온도조절장치.
A mold 50;
A heating tank 60 connected to a supply line 90 for supplying cooling water to the mold 50;
A replenishing water tank 70 connected to a collecting line 100 through which the cooling water having passed through the mold 50 is collected;
A pump 80 provided with a connection pipe 110 between the supplementary water tank 70 and the heating tank 60 and having cooling water circulated in the connection pipe 110;
A cooling water supply pipe 120 for supplying cooling water is installed in the supplementary water tank 70 and a cooling water recovery pipe 130 for discharging the cooling water filled in the supplementary water tank 70 is connected to the cooling water supply pipe 120, A heat exchange induction pipe 140 connected to the cooling water recovery pipe 130 and staggered in the replenishing water tank 70 to induce heat exchange with the cooling water in the replenishing water tank 70;
A first solenoid valve 150 installed in the heat exchange induction pipe 140 for supplying or blocking the cooling water to the heat exchange induction pipe 140;
A second solenoid valve 160 installed in the coolant recovery pipe 130 for discharging or shutting off cooling water in the makeup water tank 70;
And a check valve (121) installed in the cooling water supply pipe (120) for preventing the reverse flow of the cooling water in the makeup water tank (70).
제1항에 있어서,
상기 공급라인(90)측에는 금형(50)의 잔수제거를 위한 볼밸브(91)가 더 포함된 것을 특징으로 하는 사출금형의 온도조절장치.The method according to claim 1,
And a ball valve (91) for removing residual water of the mold (50) is further provided on the supply line (90) side.
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