KR101206426B1 - Rubber counterflow prevention system of rubber injection molding - Google Patents

Rubber counterflow prevention system of rubber injection molding Download PDF

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Publication number
KR101206426B1
KR101206426B1 KR1020100087824A KR20100087824A KR101206426B1 KR 101206426 B1 KR101206426 B1 KR 101206426B1 KR 1020100087824 A KR1020100087824 A KR 1020100087824A KR 20100087824 A KR20100087824 A KR 20100087824A KR 101206426 B1 KR101206426 B1 KR 101206426B1
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South Korea
Prior art keywords
screw
rubber
space
nozzle
injection molding
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KR1020100087824A
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Korean (ko)
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KR20120025744A (en
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정종철
남익희
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주식회사 평화이엔지
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50Axially movable screw
    • B29C45/52Non-return devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50Axially movable screw
    • B29C45/5092Intrusion moulding, i.e. the screw rotates during injection
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58Details
    • B29C45/60Screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50Axially movable screw
    • B29C45/52Non-return devices
    • B29C2045/522Spring biased check rings

Abstract

본 발명은 고무사출성형기의 압출 스크류에 의해 공급대기공간으로 충전된 고무를 스크류가 직접 피스톤작용으로 가압하여 고무를 주입할 때 공급대기공간의 고무가 압력에 의해 스크류 뒤로 역류하는 것을 방지하는 고무사출성형기의 고무 역류방지장치에 관한 것이다.
특히 본 발명은 고무사출성형기의 실린더(A) 내에 고무를 압출하는 스크류(B)가 공급대기공간(C)과 직결로 구비되고 이 공급대기공간(C)으로 고무를 충전한 후 스크류가 피스톤작용으로 직접 공급대기공간(C)을 가압하여 충전된 고무를 주입되도록 하는 것에 있어서, 상기 스크류(B)의 끝단에 일체로 결합되고 스크류(B)와 공급대기공간(C)을 연통하는 연통공간(10)이 형성되며 끝에 걸림턱(13)을 가진 노즐(1)과; 상기 스크류(B)와 노즐(1)의 걸림턱(13) 사이에 설치되어 외주면이 실린더(A) 내관과 긴밀하게 유지되면서 상/하 슬라이딩되되 하측방향으로 슬라이딩시 스크류(B)와 공급대기공간(C)을 연통하는 연통공간(20)이 형성되고 상측방향으로 슬라이딩시 일단이 스크류(B) 끝단에 면밀히 접촉되도록 한 체크링(2)으로 구성된 것을 특징으로 하는 고무사출성형기의 고무 역류방지장치를 제공한다.
The present invention is a rubber injection to prevent the rubber in the supply air back flow back the screw by the pressure when the rubber is injected into the supply air space by the extrusion screw of the rubber injection molding machine directly pressurized by the piston action A rubber backflow prevention device for a molding machine.
In particular, the present invention is provided with a screw (B) for extruding the rubber in the cylinder (A) of the rubber injection molding machine is provided in direct connection with the supply air space (C) and after filling the rubber into the supply air space (C), the screw action of the piston In pressurizing the supply standby space (C) directly to inject the filled rubber, the communication space is integrally coupled to the end of the screw (B) and communicates the screw (B) and the supply standby space (C) ( 10 and a nozzle 1 having a latching jaw 13 at the end thereof; It is installed between the screw (B) and the locking jaw (13) of the nozzle (1) and the outer peripheral surface is in close contact with the cylinder (A) inner tube and slides up and down while sliding in the downward direction when the screw (B) and the supply waiting space (C) is formed in the communication space 20, the rubber backflow prevention device of the rubber injection molding machine, characterized in that it consists of a check ring (2) so that one end is in close contact with the end of the screw (B) when sliding upward To provide.

Description

고무사출성형기의 고무 역류방지장치{Rubber counterflow prevention system of rubber injection molding}Rubber counterflow prevention system of rubber injection molding

본 발명은 고무사출성형기에 관한 것으로 더 상세하게는 압출 스크류에 의해 공급대기공간으로 충전된 고무를 스크류가 직접 피스톤작용으로 가압하여 주입할 때 공급대기공간의 고무가 압력에 의해 스크류 뒤로 역류하는 것을 방지되도록 한 고무사출성형기의 고무 역류방지장치에 관한 것이다.
The present invention relates to a rubber injection molding machine, and more particularly, that the rubber in the supply air space flows backward behind the screw when the rubber is injected into the supply air space by the extrusion screw by direct piston action. It relates to a rubber backflow prevention device of a rubber injection molding machine to be prevented.

다양한 방식의 고무사출성형기가 제시되고 있지만 일 예로 실린더 내에 고무를 압출하는 스크류가 직결로 구비되고 상기 스크루 하부에 공급대기공간이 구비되며 이 공급대기공간으로 고무를 충전한 후 스크류가 피스톤작용으로 공급대기공간을 가압하여 충전된 고무를 주입되도록 하는 고무사출성형기를 전제기술로 간주하여 본 발명과 비교 설명하면 다음과 같다.Although various types of rubber injection molding machines have been proposed, for example, a screw for extruding rubber in a cylinder is directly connected, and a supply waiting space is provided under the screw, and the screw is supplied by a piston action after filling the rubber with the supply waiting space. When compared with the present invention considering the rubber injection molding machine to pressurize the air space to be filled with a rubber injection as a preliminary technology as follows.

상기 구성으로 되는 고무사출성형기와 같은 경우 공급대기공간의 고무를 스크류로 직접 가압할 때 공급대기공간의 고무가 압출 스크류 뒤로 역류함으로써 정량공급을 맞추기가 매우 어려웠다.In the case of the rubber injection molding machine having the above configuration, when the rubber in the supply air space is directly pressurized with a screw, it is very difficult to meet the fixed quantity supply by flowing the rubber in the supply air space back behind the extrusion screw.

이에 최근에는 실린더 내의 공급대기공간과 압출 스크류 사이에 역류방지용 체크볼을 구성함으로써 역류에 대한 문제점을 개선하여 왔다.Recently, the problem of backflow has been improved by constructing a check ball for preventing backflow between the supply air space in the cylinder and the extrusion screw.

그러나 상기 체크 볼과 같은 경우 볼을 수용할 수 있는 실린더형의 장치실이 별도로 필요하며 이 장치실은 구조적으로 스크류에 장치하기가 곤란하기 때문에 별도의 피스톤을 구축한 후 그 피스톤에 내부에 설치하여 왔다However, in the case of the check ball, a cylinder-type device chamber for accommodating the ball is required separately, and since the device chamber is difficult to be mounted on the screw structurally, a separate piston has been constructed and installed inside the piston.

따라서 상기 체크 볼을 장착할 경우 결과적으로 압출 스크류가 피스톤 내부에 중공형태로 설치할 수밖에 없어 스크류 외주면에 피스톤, 피스톤 외주면에 또다시 실린더로 되는 삼중구조로 이루어질 수밖에 없어 이는 스크류의 외주면의 피스톤을 제 1실린더로 삼아 고체형태의 고무를 용융 및 용융상태의 고무를 액체상태로 유지하기 위해 발열시켜야 하는 장치적 곤란함에 있고, 또 피스톤 끝에는 체크볼을 피스톤과 내부에 매립하여야 하므로 장치가 매우 복잡해지는 또 다른 문제점을 안고 있었다.
Therefore, when the check ball is mounted as a result, the extrusion screw has no choice but to be installed in a hollow form inside the piston, and thus, the screw has a triple structure consisting of a piston on the outer circumference of the screw and a cylinder on the outer circumference of the piston. Another problem is that the device is very complicated because the rubber in the form of a cylinder is used to heat the molten rubber in order to keep the molten and molten rubber in the liquid state, and at the end of the piston, the check ball must be embedded inside the piston. I had a problem.

본 발명은 상기와 같은 종래의 문제점을 해소하기 위해 개발된 것으로서, 특히 체크 볼과 같은 역류방지역할을 수행하되 볼을 수용하여야 하는 실린더형태의 장치실이 필요없는 돌출형태의 역류방지수단을 압출 스크류 끝에 결합하여 복잡한 구조를 단일형으로 간단하게 할 수 있도록 함에 그 목적이 있다.
The present invention has been developed in order to solve the above-mentioned conventional problems, in particular, to perform a counter flow prevention zone, such as a check ball, but does not require a cylinder-type device chamber to accommodate the ball extruded backflow prevention means for screw Its purpose is to make it simple to combine complex structures into one piece by combining them at the end.

본 발명에 따른 역류방지수단은 스크류의 끝단에 일체로 결합되고 스크류와 공급대기공간을 연통하는 연통공간이 형성되며 끝에 걸림턱을 가진 노즐과; 상기 스크류와 노즐의 걸림턱 사이에 설치되어 외주면이 실린더 내관과 긴밀하게 유지되면서 상/하 슬라이딩되되 하측방향으로 슬라이딩시 스크류와 공급대기공간을 연통하는 연통공간이 형성되고 상측방향으로 슬라이딩시 일단이 스크류 끝단에 면밀히 접촉되도록 한 체크링으로 구성한 것을 특징으로 한다.
Reverse flow prevention means according to the invention is integrally coupled to the end of the screw is formed with a communication space communicating the screw and the supply waiting space and the nozzle having a locking step at the end; It is installed between the locking jaw of the screw and the nozzle, the outer circumferential surface is kept in close contact with the inner cylinder of the cylinder is sliding up and down, but when sliding in the downward direction communication space for communicating the screw and supply air space is formed, and one end when sliding in the upper direction Characterized in that it consists of a check ring to be in close contact with the screw end.

본 발명은 상기와 같이 노즐과 체크링으로 되는 돌출형태의 역류방지수단을 스크류 끝에 일체로 결합한 것으로, 특히 압출중에는 고무가 연통공간을 통해 공급대기공간으로 충전되어 가압할 때에는 진행방향에 의해 체크링이 스크류 끝단에 접촉되면서 역류방지 및 피스톤역할을 대행할 수 있으므로 종래와 같이 볼을 수용하는 별도의 장치실이 필요 없게 됨에 따라 피스톤을 구축하여야 하는 번거로움이 해소됨으로써 복잡한 장치를 단일형으로 간단하게 해결할 수 있게 되며 아울러 역류방지 및 정량공급이 효율적으로 이루어질 수 있는 이점이 있다.
The present invention is integrally coupled to the end of the screw and the projection backflow prevention means consisting of a check ring as described above, in particular during the extrusion of the rubber through the communication space to the supply standby space when the pressure is checked by the direction of travel As it can act as a backflow prevention and piston role as it comes in contact with the screw end, there is no need for a separate device room for accommodating the ball as in the prior art, thereby eliminating the trouble of constructing a piston, thereby easily solving a complicated device as a single unit. In addition, there is an advantage that the backflow prevention and quantitative supply can be made efficiently.

도 1은 본 발명의 예시도
도 2는 본 발명의 부분 확대도
도 3은 본 발명의 분해 단면도
도 4는 본 발명의 분해 사시도
도 5는 본 발명의 작동 예시도
도 6은 본 발명의 전체적인 작동 예시도 이다.
1 is an illustration of the present invention
2 is a partially enlarged view of the present invention;
3 is an exploded cross-sectional view of the present invention.
4 is an exploded perspective view of the present invention
5 is an operation example of the present invention
6 is a diagram illustrating the overall operation of the present invention.

본 발명의 바람직한 실시 예를 첨부된 도면과 함께 구체적으로 설명하면 다음과 같다. 단, 본 발명의 요지를 흐릴 수 있는 일반적인 기술내용이나 공지된 사항은 생략 또는 간단한 명칭 등으로 대체한다.
Referring to the preferred embodiment of the present invention in detail with the accompanying drawings as follows. However, general description or well-known matters that may obscure the gist of the present invention are omitted or replaced with a simple name.

본 발명은 첨부도면 도 1 내지 도 2와 같이 실린더(A) 내에 고무를 압출하는 스크류(B)가 공급대기공간(C)과 직결로 구비되고 이 공급대기공간(C)으로 고무를 충전한 후 스크류가 피스톤작용으로 직접 공급대기공간(C)을 가압하여 충전된 고무를 주입되도록 하는 고무사출성형기를 기초로 한다.The present invention is a screw (B) for extruding the rubber in the cylinder (A) as shown in Figure 1 to 2 is provided in direct connection with the supply air space (C) and after filling the rubber into the supply air space (C) It is based on a rubber injection molding machine in which the screw pressurizes the supply air space C directly by the piston action to inject the filled rubber.

상기 기초기술을 이용하여 본 발명은 스크류(B)의 끝단에 일체로 결합되고 스크류(B)와 공급대기공간(C)을 연통하는 연통공간(10)이 형성되며 끝에 걸림턱(13)을 가진 노즐(1)과; The present invention by using the basic technology is integrally coupled to the end of the screw (B) and the communication space (10) is formed in communication with the screw (B) and the supply standby space (C) is formed having a locking jaw (13) at the end A nozzle 1;

상기 스크류(B)와 노즐(1)의 걸림턱(13) 사이에 설치되어 외주면이 실린더(A) 내관과 긴밀하게 유지되면서 상/하 슬라이딩되되 하측방향으로 슬라이딩시 스크류(B)와 공급대기공간(C)을 연통하는 연통공간(20)이 형성되고 상측방향으로 슬라이딩시 일단이 스크류(B) 끝단에 면밀히 접촉되도록 한 체크링(2)으로 구성된다
It is installed between the screw (B) and the locking jaw (13) of the nozzle (1) and the outer peripheral surface is in close contact with the cylinder (A) inner tube and slides up and down while sliding in the downward direction when the screw (B) and the supply waiting space A communication space 20 communicating with (C) is formed and is composed of a check ring (2) such that one end is in close contact with the end of the screw (B) when sliding upward.

본 발명에서 더 바람직한 실시 예로서 첨부도면 도 3 내지 도 4와 같이 상기 노즐(1)은 일단에 구비되는 수나사부(11)와; 상기 스크류(B) 끝에 암나사부(B1)를 형성하여 수나사부(11)와 결합되는 것을 포함하며, 상기 수나사부(11)로부터 일정거리를 가지는 축부(12)와; 상기 축부(12) 끝단에는 확장턱(13)으로부터 좁아지는 머리부(14)를 가지되 축부(12)에서부터 머리부(14)까지 다수의 연통홈(15)이 구성되고, As a more preferred embodiment in the present invention as shown in Figure 3 to Figure 4 the nozzle (1) is provided with a male screw portion 11 is provided at one end; A shaft portion 12 including a female screw portion B1 formed at the end of the screw B and coupled to the male screw portion 11, and having a predetermined distance from the male screw portion 11; At the end of the shaft portion 12 has a head portion 14 narrowed from the expansion jaw 13, but a plurality of communication grooves 15 are formed from the shaft portion 12 to the head portion 14,

상기 체크링(2)은 노즐(1)의 축부(12)에 설치되어 외주면이 실린더(A) 내관과 긴밀하게 유지되면서 축부(12)의 일정거리 안에서 상/하 슬라이딩되되 일단은 스크류(B) 끝단과 동일하게 형성되는 접촉면(21)과; 내주면은 노즐(1)의 축부(12)에서부터 일정거리의 틈(22)을 구성함으로써 가능하다
The check ring 2 is installed on the shaft portion 12 of the nozzle 1 so that the outer circumferential surface is kept in close contact with the cylinder A inner tube and slides up and down within a predetermined distance of the shaft portion 12, but one end of the screw (B). A contact surface 21 formed in the same manner as the end; The inner circumferential surface can be formed by forming a gap 22 at a predetermined distance from the shaft portion 12 of the nozzle 1.

본 발명의 구성에 따른 작동을 설명하면 첨부도면 도 5 내지 도 6과 같이 스크류(B)에 의해 공급대기공간(C)으로 압출되는 고무는 연통공간(10)(20)으로 되는 스크류(B) 끝에 일체로 장착된 노즐(1)의 연통홈(14) 및 체크링(2)의 틈(22)을 따라 공급대기공간(C)으로 충전된다.Referring to the operation according to the configuration of the present invention as shown in Figures 5 to 6, the rubber (B) is extruded into the supply air space (C) by the screw (B) is a communication space (10) 20 screw (B) It is filled into the supply standby space C along the gap 22 of the communication groove 14 and the check ring 2 of the nozzle 1 integrally mounted at the end.

이때 체크링(2)은 노즐(1) 축부(12)의 이격거리 안에서 상/하 슬라이딩 되도록 설치되어 고무 압출의 진행방향에 의해 노즐(1)의 걸림턱(13)에 걸려있게 된다.At this time, the check ring 2 is installed to slide up and down within the separation distance of the shaft portion 12 of the nozzle (1) is caught on the locking step 13 of the nozzle 1 in the advancing direction of the rubber extrusion.

이어서 공급대기공간(B)에 고무 충전이 완료되면 스크류(B)가 피스톤작용으로 공급대기공간(C)을 가압하게 되면서 체크링(2)은 스크류(B)의 진행방향에 의해 노즐(1) 끝단의 걸림턱(13)에서 스크류(B) 끝단으로 옮겨져 접촉면(21)이 스크류(B) 끝에 면밀하게 접촉되면서 연통공간(10)(20)을 막게 된다.Subsequently, when rubber filling is completed in the supply air space B, the screw B presses the supply air space C by a piston action, and the check ring 2 is connected to the nozzle 1 by the direction in which the screw B travels. The contact surface 21 is closely contacted to the end of the screw B so as to close the communication space 10 and 20 by being moved from the locking step 13 of the end to the screw B end.

따라서 상기 체크링(2)이 스크류(B)와 노즐(1)의 걸림턱(12) 사이에서 압출 및 가압하는 진행방향에 따라 승강 및 하강하면서 연통공간을 개방 또는 폐쇄하게 되는 것이다.
Accordingly, the check ring 2 opens or closes the communication space while lifting and lowering in accordance with the direction in which the check ring 2 is extruded and pressed between the screw B and the locking jaw 12 of the nozzle 1.

상기에서는 본 발명의 실시 예를 설명하였지만 해당기술분야의 숙련된 당업자는 본 발명의 실시 예에 기재된 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있을 것이다.
Although the embodiments of the present invention have been described above, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope described in the embodiments of the present invention.

A: 실린더 B: 스크류
B1: 암나사부 C: 공급대기공간
1: 노즐 10, 20: 연통공간
11: 수나사부 12: 축부
13: 걸림턱 14: 머리부
15: 연통홈 2: 체크링
21: 접촉면 22: 틈
A: cylinder B: screw
B1: Female thread part C: Supply air space
1: nozzle 10, 20: communication space
11: male thread 12: shaft
13: hanging jaw 14: head
15: Communication groove 2: Check ring
21: contact surface 22: gap

Claims (2)

고무사출성형기의 실린더(A) 내에 고무를 압출하는 스크류(B)가 공급대기공간(C)과 직결로 구비되고 이 공급대기공간(C)으로 고무를 충전한 후 스크류가 피스톤작용으로 직접 공급대기공간(C)을 가압하여 충전된 고무를 주입되도록 하는 것에 있어서,
상기 스크류(B)의 끝단에 일체로 결합되고 스크류(B)와 공급대기공간(C)을 연통하는 연통공간(10)이 형성되며 끝에 걸림턱(13)을 가진 노즐(1)과;
상기 스크류(B)와 노즐(1)의 걸림턱(13) 사이에 설치되어 외주면이 실린더(A) 내관과 긴밀하게 유지되면서 상/하 슬라이딩되되 하측방향으로 슬라이딩시 스크류(B)와 공급대기공간(C)을 연통하는 연통공간(20)이 형성되고 상측방향으로 슬라이딩시 일단이 스크류(B) 끝단에 면밀히 접촉되도록 한 체크링(2)으로 구성된 것을 특징으로 하는 고무사출성형기의 고무 역류방지장치.
The screw (B) for extruding the rubber in the cylinder (A) of the rubber injection molding machine is provided in direct connection with the supply air space (C). In pressurizing the space C to inject the filled rubber,
A nozzle (1) integrally coupled to the end of the screw (B) and having a communication space (10) communicating with the screw (B) and the supply standby space (C) and having a locking jaw (13) at the end;
It is installed between the screw (B) and the locking jaw (13) of the nozzle (1) and the outer peripheral surface is in close contact with the cylinder (A) inner tube and slides up and down while sliding in the downward direction when the screw (B) and the supply waiting space (C) is formed in the communication space 20, the rubber backflow prevention device of the rubber injection molding machine, characterized in that it consists of a check ring (2) so that one end is in close contact with the end of the screw (B) when sliding upward .
제 1항에 있어서,
상기 노즐(1)은 일단에 구비되는 수나사부(11)와; 상기 스크류(B) 끝에 암나사부(B1)를 형성하여 수나사부(11)와 결합되는 것을 포함하며, 상기 수나사부(11)로부터 일정거리를 가지는 축부(12)와; 상기 축부(12) 끝단에는 확장턱(13)으로부터 좁아지는 머리부(14)를 가지되 축부(12)에서부터 머리부(14)까지 다수의 연통홈(15)이 구성되고,
상기 체크링(2)은 노즐(1)의 축부(12)에 설치되어 외주면이 실린더(A) 내관과 긴밀하게 유지되면서 축부(12)의 일정거리 안에서 상/하 슬라이딩되되 일단은 스크류(B) 끝단과 동일하게 형성되는 접촉면(21)과; 내주면은 노즐(1)의 축부(12)에서부터 일정거리의 틈(22)이 구성된 것을 특징으로 하는 고무사출성형기의 고무 역류방지장치.
The method of claim 1,
The nozzle 1 includes a male screw portion 11 provided at one end thereof; A shaft portion 12 including a female screw portion B1 formed at the end of the screw B and coupled to the male screw portion 11, and having a predetermined distance from the male screw portion 11; At the end of the shaft portion 12 has a head portion 14 narrowed from the expansion jaw 13, but a plurality of communication grooves 15 are formed from the shaft portion 12 to the head portion 14,
The check ring 2 is installed on the shaft portion 12 of the nozzle 1 so that the outer circumferential surface is kept in close contact with the cylinder A inner tube and slides up and down within a predetermined distance of the shaft portion 12, but one end of the screw (B). A contact surface 21 formed in the same manner as the end; An inner circumferential surface is a rubber backflow prevention device of a rubber injection molding machine, characterized in that a gap 22 is formed at a predetermined distance from the shaft portion 12 of the nozzle 1.
KR1020100087824A 2010-09-08 2010-09-08 Rubber counterflow prevention system of rubber injection molding KR101206426B1 (en)

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Application Number Priority Date Filing Date Title
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10156902A (en) 1996-12-03 1998-06-16 Niigata Eng Co Ltd Injection molding machine, resin injection pressure controlling method, and resin injecting method
JP2002001782A (en) 2000-06-23 2002-01-08 Mitsubishi Engineering Plastics Corp In-line screw type injection molding apparatus and injection molding method
JP2003334849A (en) 2002-05-20 2003-11-25 Japan Steel Works Ltd:The Back-flow preventing mechanism for injection molding machine
JP2010006012A (en) 2008-06-30 2010-01-14 Toyo Mach & Metal Co Ltd Injection molding apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10156902A (en) 1996-12-03 1998-06-16 Niigata Eng Co Ltd Injection molding machine, resin injection pressure controlling method, and resin injecting method
JP2002001782A (en) 2000-06-23 2002-01-08 Mitsubishi Engineering Plastics Corp In-line screw type injection molding apparatus and injection molding method
JP2003334849A (en) 2002-05-20 2003-11-25 Japan Steel Works Ltd:The Back-flow preventing mechanism for injection molding machine
JP2010006012A (en) 2008-06-30 2010-01-14 Toyo Mach & Metal Co Ltd Injection molding apparatus

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