KR970006496Y1 - Preform compression molding for monofilament - Google Patents
Preform compression molding for monofilament Download PDFInfo
- Publication number
- KR970006496Y1 KR970006496Y1 KR2019910008804U KR910008804U KR970006496Y1 KR 970006496 Y1 KR970006496 Y1 KR 970006496Y1 KR 2019910008804 U KR2019910008804 U KR 2019910008804U KR 910008804 U KR910008804 U KR 910008804U KR 970006496 Y1 KR970006496 Y1 KR 970006496Y1
- Authority
- KR
- South Korea
- Prior art keywords
- compression mold
- preform
- mold
- monofilament
- compression molding
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/12—Compression moulding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Powder Metallurgy (AREA)
Abstract
요약서 없음No summary
Description
제 1 도는 본 고안에 따른 압축금형의 설치상태도.1 is an installation state of the compression mold according to the present invention.
제 2 도는 종래 기술에 따른 압축금형의 설치상태도이다.2 is a state diagram of the installation of the compression mold according to the prior art.
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
1 : 성형틀,2 : 압축금형,1: forming mold, 2: compression mold,
3 : 단섬유혼합액.3: short fiber mixture liquid.
본 고안은 단섬유를 이용하여 예비성형체로 성형하는 압축금형에 관한 것이다. 일반적으로 단섬유를 강화재로 이용하여 단섬유 복합제를 제조하는 경우에는 상기 단섬유를 압축금형에서 압축 및 탈수시켜 예비성형체로 1차적으로 성형한 다음, 이 예비성형체를 이용하여 최종성형체를 제조하도록 되어 있는바, 그러나 종래에는 단섬유를 이용하여 예비성형체로 제조하는 경우 제 2 도에 도시된 바와 같이, 원하는 성형틀(11)에 단섬유 혼합액(13)을 넣고 압축금형(12)으로 압축시키면서 이 성형틀(11)하부쪽에 연결된 진공탈수기(14)를 통해 탈수하도록 되어 있었다. 여기서 상기 압축금형(12)은 통상적으로 금속 또는 플라스틱재질로 되어 있는 까닭에 이 압축금형(12)을 화살표방향으로 이동시키는 이른바, 성형 및 탈수과정시 이 압축금형(12)과 성형틀(11)사이의 미세한 접촉공간사이로 공기(도면에서는 점선 화살표로 표시됨)가 흡입되어 성형되는 예비성형체에 국부적으로 밀도가 높아짐에 따라 최종성형체의 밀도가 불균일하게 이루어져 제품의 품질이 저하되어지는 문제점이 있었다. 이에 본 고안은 상기와 같은 문제점을 해결하기 위해 안출된 것으로, 압축금형 전면에 공기가 통하도록 하여 흡입면적을 넓혀 성형되는 예비성형체에 균일하게 공기가 유입되어 균일한 탈수가 이루어짐에 따라 밀도가 균일한 예비성형체를 제조할 수 있도록 되어 있는 압축금형을 제공함에 그 목적이 있다. 상기와 같은 목적을 달성하기 위한 본 고안은, 통기성이 있는 소결재료(Sintered Materials)을 이용한 압축금형을 성형틀에 장착시킨 구조로 되어 있다. 이하, 본 고안을 첨부된 예시도면에 의거 상세히 설명한다. 본 고안은 단섬유를 이용하여 예비성형체를 제조하는 금형장치에 있어서, 상기 성형틀(1)에 장착되는 압축금형(2)은 통기성이 있는 소결금속으로 형성되어 있는 것을 특징으로 한다.The present invention relates to a compression mold for molding into a preform using short fibers. In general, in the case of manufacturing a short fiber composite using short fibers as a reinforcing material, the short fibers are first compressed into a preform and dehydrated in a compression mold, and then the final molded product is manufactured by using the preform. However, conventionally, when manufacturing a preform using short fibers, as shown in FIG. 2, the short fiber mixture 13 is put into a desired molding die 11 and compressed into a compression mold 12. Dehydration was carried out through the vacuum dehydrator 14 connected to the lower part of the mold 11. Since the compression mold 12 is usually made of metal or plastic, so that the compression mold 12 is moved in the direction of the arrow. As air (indicated by dashed arrows in the drawing) is sucked between the minute contact spaces therebetween, the density of the final molded product becomes uneven as the density of the final molded product increases locally. The present invention has been devised to solve the above problems, the air flows through the front of the compression mold to increase the suction area, uniformly inflow of air into the preform to be formed, uniform density as the dehydration is made uniform It is an object of the present invention to provide a compression mold capable of producing a preform. The present invention for achieving the above object has a structure in which a compression mold using breathable sintered materials is mounted on a molding die. Hereinafter, the present invention will be described in detail based on the accompanying drawings. The present invention is a mold apparatus for manufacturing a preform using short fibers, characterized in that the compression mold (2) mounted on the mold 1 is formed of a breathable sintered metal.
도면중 미설명 부호, 4는 진공탈수기, 5는 금속분말 및 6은 기공이다.In the drawings, reference numeral 4 denotes a vacuum dehydrator, 5 a metal powder, and 6 a pore.
상기와 같이 이루어진 본 고안은 제 1 도에 도시된 바와 같이, 원하는 성형틀(1)에 단섬유 혼합액(3)을 넣고 상기 압축금형(2)으로 압축시키게 되면, 상기 단섬유 혼합액(2)중 액체는 성형틀(1)의 구멍(1a)을 통해 진공 탈수기(4)쪽으로 수집되어지는 한편, 단섬유혼합액(3)에서 단섬유는 예비성형체로 1차적으로 성형되어지는바, 이때 통기성이 있는 소결재료로 제조된 압축금형(2)의 전면을 통해 단섬유 혼합액(3)에 균일한 공기(제 1 도에서 점선 화살표로 표시됨)가 전달되어 밀도가 균일한 예비성형체를 제조할 수 있다. 한편 본 고안에 따른 압축 금형(2)은 통기성 있는 소결재료로 제조되어지는데, 통상 금속분말을 압축성형하여 가열하게 되면 금속분말(5)간의 접촉부위만의 결합으로 그 내부는 제 1 도에 도시된 바와 많은 기공(6)이 형성되어지므로 통기성을 갖도록 되어 있다. 여기서 상기 압축금형(2)의 내부기공(6)은 성형압력 분말크기 및 형태로 조절할 수가 있으므로 필요에 따라 압축금형(2)의 통기성을 적절하게 조절할 수 있음은 물론이다. 또한 상기 압축금형(2)에 사용되는 소결재료는 모든 금속재료를 사용할 수 있으나 그중에서도 알루미늄, 철, 동계통등이 양호하고, 상기 소결재료의 분말크기는 50㎛~500㎛정도이면 된다. 이와 같이 본 고안에 따른 단섬유를 예비성형체로 성형하는 압축금형은 통기성 있는 소결재료를 이용하여 사용함에 따라 성형되는 예비성형체 전면을 균일하게 가압하여 균일한 밀도를 갖춘 성형품으로 제조할 수 있는 잇점이 있을 뿐만 아니라 상기 압축금형(2)의 전체에 기공(6)이 형성되어짐에 따라 탈수과정시 탈수시간이 단축되어지는 잇점도 있다.According to the present invention made as described above, as shown in FIG. 1, when the short fiber mixed solution 3 is put into a desired mold 1 and compressed into the compression mold 2, the short fiber mixed solution 2 is The liquid is collected toward the vacuum dehydrator 4 through the hole 1a of the molding die 1, while the short fibers in the short fiber mixture 3 are primarily molded into a preform, which is breathable Uniform air (indicated by dashed arrows in FIG. 1) is transferred to the short fiber mixed liquid 3 through the entire surface of the compression mold 2 made of a sintered material, thereby producing a preform having a uniform density. On the other hand, the compression mold 2 according to the present invention is made of a breathable sintered material. Usually, when the metal powder is compressed and heated, only the contact portion between the metal powders 5 is combined, and the inside thereof is shown in FIG. As many pores 6 are formed as described above, it is intended to have air permeability. Here, since the internal pores 6 of the compression mold 2 can be adjusted to the molding pressure powder size and shape, it is a matter of course that the air permeability of the compression mold 2 can be properly adjusted. In addition, the sintered material used in the compression mold (2) may be any metal material, but among them, aluminum, iron, copper system and the like is good, the powder size of the sintered material may be about 50㎛ ~ 500㎛. As such, the compression mold for molding short fibers according to the present invention into a preform may pressurize the entire surface of the preform to be formed by using a breathable sintering material to produce a molded article having a uniform density. In addition, as the pores 6 are formed in the entire compression mold 2, the dehydration time is shortened during the dehydration process.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910008804U KR970006496Y1 (en) | 1991-06-14 | 1991-06-14 | Preform compression molding for monofilament |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910008804U KR970006496Y1 (en) | 1991-06-14 | 1991-06-14 | Preform compression molding for monofilament |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930000458U KR930000458U (en) | 1993-01-20 |
| KR970006496Y1 true KR970006496Y1 (en) | 1997-06-25 |
Family
ID=19315108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019910008804U KR970006496Y1 (en) | 1991-06-14 | 1991-06-14 | Preform compression molding for monofilament |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970006496Y1 (en) |
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1991
- 1991-06-14 KR KR2019910008804U patent/KR970006496Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR930000458U (en) | 1993-01-20 |
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