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KR790001321Y1 - Vent Injection Molding Machine - Google Patents

Vent Injection Molding Machine Download PDF

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Publication number
KR790001321Y1
KR790001321Y1 KR7400199U KR740000199U KR790001321Y1 KR 790001321 Y1 KR790001321 Y1 KR 790001321Y1 KR 7400199 U KR7400199 U KR 7400199U KR 740000199 U KR740000199 U KR 740000199U KR 790001321 Y1 KR790001321 Y1 KR 790001321Y1
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KR
South Korea
Prior art keywords
vent
cylinder
molding machine
injection molding
injection
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Expired
Application number
KR7400199U
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Korean (ko)
Inventor
가다시 아오기
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가다시 아오기
닛세이 주시 고오교 가부시기가이샤
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Priority to KR7400199U priority Critical patent/KR790001321Y1/en
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Abstract

내용 없음.No content.

Description

벤트식 사출 성형기Vent Injection Molding Machine

제1도는 본 고안의 실시예를 표시한 종단면도.1 is a longitudinal sectional view showing an embodiment of the present invention.

제2도는 요부 종단면도.2 is a longitudinal sectional view of the main part.

본 고안은 가열실린더 내에 발생한 수분, 공기, 휘발분 등의 가스를 배출시키는 장치를 갖추고 있는 사출성형기, 즉 벤트식 사출성형기에 관한 것이다. 종래 이런 종류의 사출성형기는 스크류를 내장한 사출실린더의 대략 중앙에 벤트를 설치하고 있다.The present invention relates to an injection molding machine, that is, a vent injection molding machine having a device for discharging a gas such as water, air, volatile matter generated in the heating cylinder. Conventionally, this type of injection molding machine has installed a vent in the center of the injection cylinder with a built-in screw.

그러나 사출실린더의 내벽 부근에 있는 재료는 외부에서의 가열에 의해 스크류 부근의 재료 보다도 용융 상태가 더 진행되기 때문에 사출실린더에 설치한 벤트만으로는 용융 재료의 심부(深部)에서 발생한 가스를 완전히 배기시키는 것은 매우 곤란했다.However, since the material near the inner wall of the injection cylinder is further melted than the material near the screw due to the external heating, it is only necessary to completely exhaust the gas generated at the deep part of the molten material with the vent installed in the injection cylinder. It was very difficult.

본 고안은 상기의 사정에 비추어 이루어진 것으로 용융시에 발생하는 수분, 공기, 휘발분 등의 가스를 균등하고 거의 완전하게 배출할 수 있는 벤트를 갖춘 벤트식 사출성형기를 제공하는 것이다.The present invention has been made in view of the above circumstances to provide a vent-type injection molding machine having a vent capable of uniformly and almost completely discharging gas such as water, air, and volatile matter generated during melting.

이하 도면에 표시한 실시예를 참조하면서 본 고안을 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

도면은 본 고안에 관한 1 실시예를 표시하는 것으로 (1)은 합성수지의 재료를 투입하는 호퍼(hopper), (2)는 가열 부재를 외주에 설치한 가소화 실린더로써, 전기한 호퍼(1)에서 송입되어 오는 재료를 내부의 스크류(3)에서 가열 혼련하면서 가소화 한다.Figure 1 shows an embodiment of the present invention, (1) is a hopper for injecting the material of synthetic resin, (2) is a plasticizing cylinder provided with a heating member on the outer circumference, the hopper (1) The material fed in is calcined while heating and kneading with the internal screw (3).

(4)는 전기한 가소화 실린더 선단의 벤트실로써, 가소화실린더(2)와 그 하단에 병설한 사출실린더(9)와를 연통하는 공급로(8)의 중앙부에 다수의 배기공(5)이 측부에 있는 벤트관(6)을 전기한 스크류(3)에 대하여 직각으로 하고, 공급로(8)와 동일 방향으로 상부에서 삽입 고정하여서 형성된 것이며, 또 각 배기공(5)는 진공펌프(VP)에 접속한 배기구(7)와 연통시켜져 있다.(4) is a vent chamber at the tip of the plasticizing cylinder described above, and a plurality of exhaust holes (5) in the central portion of the supply passage (8) communicating with the plasticizing cylinder (2) and the injection cylinder (9) provided at the lower end thereof. The vent pipe 6 on this side is formed at right angles to the screw 3, and inserted and fixed at the top in the same direction as the supply path 8, and each exhaust hole 5 is a vacuum pump ( It is connected to the exhaust port 7 connected to VP).

상기의 구성에 있어서 호퍼(1) 내에 투입된 재료는 가소화실린더(2) 내의 스크류(3)에 의하여 가소화돠면서 벤트실(4) 쪽으로 차례로 압출된다. 그러나 이때의 재료는 아직 완전한 용융 상태에 이르지 못하고, 재료중의 가스가 방출되는 정도(재료에 따라 다르나 130℃-150℃정도)로 가열 용융되여 있다.In the above configuration, the material introduced into the hopper 1 is sequentially extruded toward the vent chamber 4 while being plasticized by the screw 3 in the plasticizing cylinder 2. However, the material at this time has not yet reached a complete molten state and is heated and melted to the extent that the gas in the material is released (depending on the material but about 130 ° C to 150 ° C).

그리고 용융합에 따라서 발생하는 가스는 용융 재료와 함께 스크류(3)에 의하여 압출되여 벤트실(4)의 벤트관(6) 외주부에 달한다.The gas generated along with the melt is extruded together with the molten material by the screw 3 to reach the outer circumferential portion of the vent pipe 6 of the vent chamber 4.

전기한 용융 재료는 벤트실(4)의 유무에 관계 없이 공급로(8)에서 사출실린더(9) 쪽으로 압출되는 바, 발생 가스는 벤트관(6)의 배기공(5)에서 외부로 배출된다.The molten material described above is extruded from the supply passage 8 toward the injection cylinder 9 with or without the vent chamber 4, and the generated gas is discharged from the exhaust hole 5 of the vent pipe 6 to the outside. .

즉 배기구(7)에 접속한 진공펌프(VP)에 의하여 가소화실린더(2)에서 토출된 용융 재료 중에 가스가 흡입 배출된다.That is, the gas is sucked out of the molten material discharged from the plasticizing cylinder 2 by the vacuum pump VP connected to the exhaust port 7.

이 결과 벤트실(4) 부분을 통과한 절반정도 용융된 상태의 재료 중에는 가스가 포함되어 있지 않고, 용융 재료는 사출실린더(9)에 있어서 다시 용융 가소화 되며 금형쪽으로 사출스크류(10)에 의하여 사출된다.As a result, gas is not contained in the half-melted state that has passed through the vent chamber 4, and the molten material is melt-plasticized again in the injection cylinder 9, and is injected into the mold by the injection screw 10. Is injected.

또 상기 구성의 성형기에 있어서는 가소화실린더(2)의 선단에 벤트실(4)을 형성하고, 이 벤트실(4)을 경유하여 사출실린더(9)에 용융 재료를 공급하므로 전기한 벤트실(4)을 발포 성형에 있어서의 발포제 혼합실로써 이용할 수가 있다.In the molding machine having the above-described configuration, the vent chamber 4 is formed at the tip of the plasticizing cylinder 2 and the molten material is supplied to the injection cylinder 9 via the vent chamber 4 so that the vent chamber ( 4) can be used as a foaming agent mixing chamber in foam molding.

즉 배기용의 전기한 벤트관(6)에 탄산가스 등의 발포제 봄베(bomb)를 접속하고 벤트관(6)에서 벤트실(4) 내에 발포제를 압입하여 절반정도 용융된 상태의 재료에 혼합한다.That is, a blowing agent bomb such as carbon dioxide gas is connected to the vent pipe 6 for exhaust, and the blowing agent is press-fitted into the vent chamber 4 from the vent pipe 6 and mixed in a material in a state of about half melted. .

발포제를 혼합시킨 용융 재료는 공급로(8)에서 사출실린더(9) 쪽으로 압출되며, 또한 혼련 가소화된 후 금형으로 사출된다.The molten material mixed with the blowing agent is extruded from the feed passage 8 toward the injection cylinder 9, and also kneaded and plasticized before being injected into the mold.

상술한 바와 같이 본 고안은 가소화실린더(2)와 사출실린더(9)를 연통하는 공급로(8)의 중앙부에 다수의 배기공(5)을 측부에 보유하는 벤트관(6)을 공급로 (8)와 동일한 방향으로 삽입 고정하여 그 공급로(8)를 벤트실(4)로 하고 가소화실린더(2)에서 토출된 용융 재료 중의 가스를 즉시 배출할 수 있도록 한 것이므로 가소화실린더 또는 공급통 측부에서 가스의 배출을 행하는 경우 보다도 가스의 배출이 용이하다.As described above, the present invention provides a vent pipe 6 having a plurality of exhaust holes 5 at a side portion in a central portion of a supply passage 8 communicating the plasticizing cylinder 2 and an injection cylinder 9 with a supply passage. It is inserted and fixed in the same direction as (8) so that the supply path 8 is the vent chamber 4, and the gas in the molten material discharged from the plasticizing cylinder 2 can be immediately discharged, so that the plasticizing cylinder or supply Gas is easier to discharge than when gas is discharged from the cylinder side.

그뿐 아니라 토출에 의하여 스크류 한쪽의 용융 재료가 벤트관 측부를 따라서 낙하하게 되므로 종래에 곤란하였던 심부의 가스 배출이 선행하게 된다. 또 공급로에 퇴적한 뒤에도 가스의 배출이 행하여지고, 그 배출 작용은 퇴적한 용융 재료의 내부에서 발생하므로 공급로 상부에 스크류에 대향하여 벤트실을 돌설한 경우 보다도 가스의 배출 효과는 한층 우수하다. 또한 벤트실을 발포제 혼합실로 이용할 수 있어서 이 때에도 퇴적한 용융 재료 내부에 발포제가 압입되게 되므로 공급로 상부에서 압입하는 경우 보다도 발포제를 균일하게 압입할 수 있는 등의 장점이 있는 것이다.In addition, since the melted material on one side of the screw falls along the vent pipe side by the discharge, the gas discharge in the core portion, which has been difficult in the past, is preceded. In addition, since the gas is discharged after it is deposited in the supply passage, and the discharge action is generated inside the deposited molten material, the gas discharge effect is more excellent than when the vent chamber is raised against the screw in the upper part of the supply passage. . In addition, since the vent chamber can be used as a foaming agent mixing chamber, the foaming agent is pressed into the deposited molten material at this time, so that the blowing agent can be pressurized more uniformly than when pressurizing from the upper part of the supply passage.

Claims (1)

내부에 스크류를 보유하는 가소화실린더와 사출스크류를 내장한 사출실린더를 병설하고, 전기한 가소화실린더의 선단부를 공급로를 개재하여 사출실린더 측부에 연통시키고, 또한 복수의 배기공을 보유하는 벤트관을 전기한 공급로의 중앙부에 방향을 동일하게 삽입 고정하여 공급로를 벤트실로 하여서 이루어진 벤트식 사출성형기.A plasticizer cylinder with a screw inside and an injection cylinder with an injection screw are installed in parallel, and the front end of the plasticizer cylinder communicated with the injection cylinder side via a supply passage, and a vent having a plurality of exhaust holes. A vent injection molding machine in which a supply path is used as a vent chamber by inserting and fixing a pipe in the same direction as a center part of a supply path in which an electric pipe is installed.
KR7400199U 1974-01-01 1974-01-01 Vent Injection Molding Machine Expired KR790001321Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR7400199U KR790001321Y1 (en) 1974-01-01 1974-01-01 Vent Injection Molding Machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR7400199U KR790001321Y1 (en) 1974-01-01 1974-01-01 Vent Injection Molding Machine

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KR790001321Y1 true KR790001321Y1 (en) 1979-08-23

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Application Number Title Priority Date Filing Date
KR7400199U Expired KR790001321Y1 (en) 1974-01-01 1974-01-01 Vent Injection Molding Machine

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Country Link
KR (1) KR790001321Y1 (en)

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