KR930017652A - 분말재료의 압출 성형방법 및 그 장치 - Google Patents

분말재료의 압출 성형방법 및 그 장치 Download PDF

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KR930017652A
KR930017652A KR1019930001719A KR930001719A KR930017652A KR 930017652 A KR930017652 A KR 930017652A KR 1019930001719 A KR1019930001719 A KR 1019930001719A KR 930001719 A KR930001719 A KR 930001719A KR 930017652 A KR930017652 A KR 930017652A
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die cavity
die
powder material
compressed
semi
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KR1019930001719A
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KR960007501B1 (ko
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요시끼 히라이
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센보꾸야, 아끼오
히다찌 훈마쯔 야낑 가부시끼가이샤
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
    • B22F5/085—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs with helical contours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/004—Filling molds with powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
    • 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
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • B29B9/00—Making granules
    • B29B9/08—Making granules by agglomerating smaller particles
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/131—Curved articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/26—Extrusion presses; Dies therefor using press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • B29C2043/3618—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices plurality of counteracting elements
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/251—Particles, powder or granules
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49462—Gear making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49462—Gear making
    • Y10T29/49467—Gear shaping
    • Y10T29/49474—Die-press shaping

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

이 발명은 펠렛을 형성하기 위하여 분말재료를 압출성형하기 위한 방법 및 장치에 관한 것이다. 이 방법은 분말 재료의 충전을 수용하기 위한 압축 통로를 갖는 다이 공동에 일시적인 대처를 위하여 반압축된 분말재료를 제공하는 단계와; 분말재료의 예정된 양으로 반압축된 분말재료를 수용한 다이공동을 충전하는 단계와; 반 압축된 재료가 펠렛 형태로 완전히 압축되고 충전된 분말재료가 반압축된 형태로 완전히 압축되므로 압축통로를 거쳐서 다이공동으로부터 반압축 재료를 압출성형 반압축재료에 대항하여 다이 공동안으로 충전된 분말재료를 누르는 단계를 포함한다. 충전 및 누름단계는 반압축된 재료를 경유하여 펠렛안으로 분말재료를 연속적으로 형성하도록 반복하게 된다. 이 장치에서 세로방향 다이공동은 다이를 통과하고 제1통로의 측방단면 치수가 거의 동일하고 압축 통로의 측방 단면 치수가 점차 감소하게 된 제1통로에 연속적으로 연결한 제1통로 및 압축통로를 포함한다. 펀치는 다이공동안으로 미끄럼가능한 삽입을 위하여 다이공동의 세로방향에서 다이에 대하여 이동가능하며 펀치가 다이공동안으로 삽입될 때 펀치는 압축통로에 거의 도달하지 못하게 된다.

Description

분말재료의 압출 성형방법 및 그 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 이 발명에 따른 압출성형 장치의 제1실시예를 도시한 수직 단면도, 제2도는 제1도의 장치의 작동을 설명하기 위한 오른쪽 및 왼쪽부분의 수직 단면도, 제3도는 제1도의 장치에 의해 제조된 펠렛의 사시도.

Claims (20)

  1. 분말 재료의 펠렛을 형성하도록 분말재료를 압출성형방법에 있어서, (A)분말재료의 충전을 수용하기 위한 압축 통로를 갖는 다이공동에 일시적인 대처를 위하여 반압축된 분말재료를 제공하는 단계와; (B)상기 분말재료의 예정된 양으로 반압축된 분말재료를 수용한 다이공공을 충진하는 단계와; (C)반압축된 재료가 펠렛 형태로 완전히 압축되고 충전된 분말재료가 반압축된 형태로 완전히 압축되므로 압축통로를 거쳐서 다이 공동으로부터 반압축 재료를 압출성형 반압축재료에 대향하여 다이 공동안으로 충전된 분말재료를 누르는 단계와; (D)반압축된 재료를 경유하여 펠렛안으로 분말재료를 연속적으로 형성하도록 단계 (B) 및 (C)를 반복하는 단계를 포함하도록 된 방법.
  2. 제1항 있어서, 상기 준비 단계(A)는, (a)일시적인 기초가 다이공동안으로 분말재료를 일시적으로 수용하기 위하여 다이 공동으로 일시적인 기초를 위치시키는 단계와; (b)분말재료의 예정된 양을 갖는 다이공동을 충진하는 단계와; (c)충진된 분말재료가 반압축된 분말재료안으로 형성되고 불충분하게 눌려짐에 의해 압축통로를 거쳐서 다이공동으로부터 일시적인 기초를 압출성형하고 일시적인 기초에 대향하여 다이 공동안으로 충전된 분말 재료를 누르게 되는 방법을 포함하도록 된 방법.
  3. 제2항에 있어서, 준비단계(A)의 일시적인 기초는 변형가능한 재료로 이루어진 편(piece)을 포함하도록 된 방법.
  4. 제3항에 있어서, 상기 변형가능한 재료는 연성의 금속, 고무, 셀룰로우즈 재료, 종이, 의류 및 섬유 충진물로 선택하도록 된 방법.
  5. 제1항에 있어서, 다이 공동은 압축통로에서 테이퍼지도록 된 방법.
  6. 제1항에 있어서, 다이공동의 단면치수는 펠렛의 단면 치수만큼 큰 크기로 압축통로에서 점차 감소하도록 된 방법.
  7. 제1항에 있어서, 상기 성형된 펠렛은 신장된 형태를 갖도록 된 방법.
  8. 제1항에 있어서, 상기 준비단계(A)전에 튜브 형태로 다이공동을 형성하기 위하여 다이공동에 맨드릴 위치시키는 단계를 포함하도록 된 방법.
  9. 제1항에 있어서, 상기 다이공동은 펠렛상에 나선 형태부분을 형성하기 위하여 압축통로상에 제공하도록 된 방법.
  10. 분말재료의 펠렛을 형성하도록 분말재료는 연속적으로 압출성형하기 위한 장치에 잇어서, 제1통로의 측방 단면치수가 거의 동일하고 압축통로의 측방 단면치수가 점차 줄어들며 제1통로에 연속적으로 연결한 압축통로와 제1통로를 포함하여 다이를 거쳐서 통과한 세로방향 다이 공동을 갖는 다이와; 공통안으로 미끄럼 삽입하기 위하여 다이공동의 세로 방향에서 다이에 대하여 이동가능하고 펀치가 다이 공동안으로 삽입될 때 압축통로에 연속적으로 도달하지 않게 된 펀치를 포함하도록 된 압출성형장치.
  11. 제10항에 있어서, 압축 통로의 상기 측방 단면 치수는 펠렛의 단면 치수와 동일한 크기로 감소하도록 된 장치.
  12. 제10항에 있어서, 상기 형성된 펠렛상에 내부 보어를 형성하기 위한 다이공동에 동축으로 배치된 세로방향 맨드릴과; 펀치가 다이공동안으로 삽입될 때 맨드릴을 수용하기 위하여 핀치상에 제공된 수용 보어를 포함하도록 된 장치.
  13. 제10항에 있어서, 펀치가 다이공동으로 눌려지게 될 때 다이가 고정된 기저부에 위치하게 되고, 펀치가 다이공동으로부터 해제하게 될 때 다이가 예정된 거리로 고정된 기저부로부터 이격되며 고정된 기저부상에 다이를 현수하여 장착하기 위한 장착 수단을 포함하도록 된 장치.
  14. 제10항에 있어서, 상기 다이는 제1및 제2분리가능한 부분을 포함하고, 다이공동의 제1통로는 제1분리가능한 부분을 통과하고 제2분리가능한 부분으로 연장하며 압축통로는 제2분리가능한 부분에 위치하게 된 장치.
  15. 제14항에 있어서, 다이 공동은 다이의 제2분리가능한 부분에서 압축통로에 연속적으로 연결된 통로를 포함하고 상기 제2통로의 측면 단면 치수는 일정하게 된 장치.
  16. 제10항에 있어서, 상기 장치는 펠렛상에 나선형태 부분을 형성하기 위한 형성수단을 포함하도록 된 장치.
  17. 제16항에 있어서, 형성수단은 압축통로상에 형성된 나선 리세스를 포함하도록 된 장치.
  18. 제14항에 있어서, 다이공동의 세로방향에 대하여 다이의 제2부분을 회전가능하게 지지하기 위한 제1지지수단을 포함하도록 된 장치.
  19. 제18항에 있어서, 다이공동의 세로방향에 대하여 펀치를 회전가능하게 지지하기 위한 제2지지수단을 포함하도록 된 장치.
  20. 제14항에 있어서, 다이는 다이공동으로 부터 압출성형 펠렛을 수용하기 위하여 다이공동에 연결된 상응실을 수용한 제3분리가능한 부분을 포함하도록 된 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930001719A 1992-02-08 1993-02-08 분말재료의 압출 성형 방법 및 그 장치 KR960007501B1 (ko)

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DE4303588A1 (ko) 1993-08-12
JPH05222408A (ja) 1993-08-31

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