US3529321A - Deformable mold die - Google Patents

Deformable mold die Download PDF

Info

Publication number
US3529321A
US3529321A US681874A US3529321DA US3529321A US 3529321 A US3529321 A US 3529321A US 681874 A US681874 A US 681874A US 3529321D A US3529321D A US 3529321DA US 3529321 A US3529321 A US 3529321A
Authority
US
United States
Prior art keywords
parts
die
deformable
compression
article
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US681874A
Other languages
English (en)
Inventor
Andre Culand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Application granted granted Critical
Publication of US3529321A publication Critical patent/US3529321A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/20—Opening, closing or clamping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/022—Moulds for compacting material in powder, granular of pasta form
    • B30B15/024—Moulds for compacting material in powder, granular of pasta form using elastic mould parts
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/044—Rubber mold

Definitions

  • the present invention proposes obviating this disadvantage, while making it possible to keep within the manu facturing tolerances imposed, with all the precision which is desirable.
  • the invention relates to a deformable die permitting the production of mechanical articles of substantially flat shape by pressure.
  • the compression operation is effected in the usual way in a press between two rigid parts, one of which is placed on the lower plate and the other, the ram, is "fast with the other plate of the press.
  • the deformable die according to the invention has as its object to delimit with all the desired precision, the external contour of the article being produced, while permitting the immediate removal of the article from the die after production and eliminating interstices or joints in contact with the pulverulent material to be compressed.
  • An essential feature of the deformable die according to the invention is that it comprises a component part made of compressible elastic material, which surrounds the external contour of the article to be produced, over the entire periphery thereof.
  • the elastic component part is imprisoned between at least two rigid parts of the die so that by a strong clamping of the two rigid parts against the elastic part, it is subjected to considerable compression, and the elastic part then moves, in deforming, to the previously defined contour of the article being manufactured.
  • the sense in which the clamping of the two parts is effected is substantially the same as the direction in which the compression of the pulverulent material is to be effected at the following stage of the operation; the deformation of the elastic part under the action of this damping is carried out in directions substantially perpendicular to the clamping and compression directions.
  • the elastic part is given great rigidity during the entire duration of compression, which permits machining and truing of its internal faces, until a peripheral contour is obtained which is identical with the external contour of the article to be produced, within construction tolerances.
  • the die is then ready for use and it is sufficient to com press the pulverulent raw material within the contour defined hereinbefore between the ram and the supporting part which corresponds thereto.
  • the two rigid parts of the die simply have to be unclamped from one another, which frees the elastic intermediate part of the said die from all constraint.
  • the internal contour of the intermediate part which has previously been brought to the desired dimensions by truing, then widens out elastically sufiilciently to permit the produced article to be withdrawn eas1 y.
  • the single figure shows a vertical half section of a deformable die according to the invention.
  • the article 7 to be manufactured is a circular disc of uniform thickness'. It goes without saying, however, that it would not constitute a departure from the framework of the invention, if the invention is applied to the production of an article whose outline can be obtained at the instant of compression by the action of molds of various shapes interposed between, on the one hand, the pressure parts (ram 9 and supporting part 8) and on the other hand, the respective upper and lower faces of the article to be produced.
  • the external contour of the article can be of any desired shape provided only that it can easily be rectified by acting on the internal wall or walls of the elastic part 4.
  • this part is in the form of a hollow cylinder with circular bases.
  • the elastic part is compressed by the action of the two parts 1 and 3 which are concentric in this case, and the second of which is screwed for example onto the first.
  • the function of the intermediate part 2 which is also concentric with the two parts 1 and 3 is to transmit to the elastic part 4 the compression resulting from the screwing of the two parts 1 and 3 on one another, in such a manner that the part 1, rotating on the part 2, is not in contact with the elastic part 4, which thus is not subjected to any forces tending to cause rotation, but only to axial compression.
  • the part 4 will comprise a convex hard swelling on its internal wall.
  • the truing (by means notshown) will affect the swelling in question, so as to bring the internal face of the part 4 to a perfect cylindrical shape, within the tolerance imposed on the diameter of the face.
  • 6 is one of the pins for the convenient positioning of the die assembly according to the invention on the lower plate of the press, interposing, for example, an intermediate plate 10 between the die and the press plate, the plate 10 supporting the locating pins 6.
  • the part 4 could be made, for example, of neoprene rubber with a hardness of between 70 and 90 Shore units; the part 4 could also be made of any other elastic material of similar properties.
  • a deformable die for the production of mechanical parts by mold pressure from pulverulent raw materials, said die comprising first and second rigid parts, a third elastic part having a concave inner surface when in relaxed condition and a cylindrical surface when axially compressed and in a mold condition, and means for clamping said first and second parts together and axially compressing said third elastic part to make said inner surface of said third part cylindrical, said third part forming the whole wall of the mold to contain the article being press molded and having an axial dimension larger than that of the mechanical part to be molded.
  • said means carried by said first and fourth parts to main"- tain axial alignment comprises pins carried by said first part, and extending axially away from said first part, and holes circumferentially spaced about said fourth part and receiving in pin receiving relationship.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
US681874A 1966-11-16 1967-11-09 Deformable mold die Expired - Lifetime US3529321A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR83890A FR1507302A (fr) 1966-11-16 1966-11-16 Matrice déformable

Publications (1)

Publication Number Publication Date
US3529321A true US3529321A (en) 1970-09-22

Family

ID=8621130

Family Applications (1)

Application Number Title Priority Date Filing Date
US681874A Expired - Lifetime US3529321A (en) 1966-11-16 1967-11-09 Deformable mold die

Country Status (11)

Country Link
US (1) US3529321A (enrdf_load_stackoverflow)
BE (1) BE706208A (enrdf_load_stackoverflow)
CH (1) CH500795A (enrdf_load_stackoverflow)
DE (1) DE1583735A1 (enrdf_load_stackoverflow)
DK (1) DK117095B (enrdf_load_stackoverflow)
FR (1) FR1507302A (enrdf_load_stackoverflow)
GB (1) GB1191677A (enrdf_load_stackoverflow)
LU (1) LU54839A1 (enrdf_load_stackoverflow)
NL (1) NL6715408A (enrdf_load_stackoverflow)
NO (1) NO120161B (enrdf_load_stackoverflow)
SE (1) SE341054B (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3604060A (en) * 1968-11-14 1971-09-14 Asea Ab Press tool for manufacturing rod and tubes by compressing powder
US3648965A (en) * 1970-08-24 1972-03-14 Polycast Technology Corp The Gasket for plastic casting
US3850557A (en) * 1972-12-05 1974-11-26 Asea Ab Container for manufacturing sintered products
US3975131A (en) * 1974-11-29 1976-08-17 Societe Rhone-Progil S.A. Expansible mold for the manufacture of plaster pieces
US4330251A (en) * 1978-09-12 1982-05-18 Basset Bretagne Loire-Bbl Device for manufacturing articles of compacted powder
US4439392A (en) * 1982-11-22 1984-03-27 Pda Engineering Method and apparatus for making a glass laminated structure
US4704081A (en) * 1985-05-08 1987-11-03 Rohm Gmbh Device for shaping synthetic resins
US4917902A (en) * 1989-03-28 1990-04-17 Mobay Corporation Mold for the preparation of reinforced reaction injection molded products
US4932857A (en) * 1987-06-05 1990-06-12 Takeda Chemical Industries, Ltd. Compression molding apparatus
US5116639A (en) * 1989-02-07 1992-05-26 Steelcase Inc. Monolithic finishing process and machine for furniture parts and the like
US5225170A (en) * 1989-02-07 1993-07-06 Steelcase Inc. Monolithic finishing process and machine for furniture parts and the like

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2499303A1 (fr) * 1981-01-30 1982-08-06 Ceraver Procede de sertissage d'une piece metallique sur une piece non metallique avec interposition d'un voile fibreux

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2360528A (en) * 1941-08-13 1944-10-17 Gen Motors Corp Method of making powdered metal articles
US2449407A (en) * 1943-05-24 1948-09-14 Walter S Mulholland Apparatus for forming grinding wheels
US2480605A (en) * 1943-07-21 1949-08-30 Ivar T Quarnstrom Standard molding base
US2874409A (en) * 1954-06-21 1959-02-24 Detroit Mold Engineering Co Plastic mold base
US2876495A (en) * 1954-04-06 1959-03-10 Parker Pen Co Apparatus for injection molding of articles made of a thermoplastic
US3034191A (en) * 1960-10-05 1962-05-15 Gen Motors Corp Isostatic molding apparatus
US3183552A (en) * 1963-01-25 1965-05-18 Canada Lighter & Plastics Ltd Plastic molding apparatus
US3201844A (en) * 1962-10-16 1965-08-24 Poitras George Pipe header for forming gasket grooves in concrete pipe tongues

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2360528A (en) * 1941-08-13 1944-10-17 Gen Motors Corp Method of making powdered metal articles
US2449407A (en) * 1943-05-24 1948-09-14 Walter S Mulholland Apparatus for forming grinding wheels
US2480605A (en) * 1943-07-21 1949-08-30 Ivar T Quarnstrom Standard molding base
US2876495A (en) * 1954-04-06 1959-03-10 Parker Pen Co Apparatus for injection molding of articles made of a thermoplastic
US2874409A (en) * 1954-06-21 1959-02-24 Detroit Mold Engineering Co Plastic mold base
US3034191A (en) * 1960-10-05 1962-05-15 Gen Motors Corp Isostatic molding apparatus
US3201844A (en) * 1962-10-16 1965-08-24 Poitras George Pipe header for forming gasket grooves in concrete pipe tongues
US3183552A (en) * 1963-01-25 1965-05-18 Canada Lighter & Plastics Ltd Plastic molding apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3604060A (en) * 1968-11-14 1971-09-14 Asea Ab Press tool for manufacturing rod and tubes by compressing powder
US3648965A (en) * 1970-08-24 1972-03-14 Polycast Technology Corp The Gasket for plastic casting
US3850557A (en) * 1972-12-05 1974-11-26 Asea Ab Container for manufacturing sintered products
US3975131A (en) * 1974-11-29 1976-08-17 Societe Rhone-Progil S.A. Expansible mold for the manufacture of plaster pieces
US4330251A (en) * 1978-09-12 1982-05-18 Basset Bretagne Loire-Bbl Device for manufacturing articles of compacted powder
US4439392A (en) * 1982-11-22 1984-03-27 Pda Engineering Method and apparatus for making a glass laminated structure
US4704081A (en) * 1985-05-08 1987-11-03 Rohm Gmbh Device for shaping synthetic resins
US4932857A (en) * 1987-06-05 1990-06-12 Takeda Chemical Industries, Ltd. Compression molding apparatus
US5116639A (en) * 1989-02-07 1992-05-26 Steelcase Inc. Monolithic finishing process and machine for furniture parts and the like
US5225170A (en) * 1989-02-07 1993-07-06 Steelcase Inc. Monolithic finishing process and machine for furniture parts and the like
US4917902A (en) * 1989-03-28 1990-04-17 Mobay Corporation Mold for the preparation of reinforced reaction injection molded products

Also Published As

Publication number Publication date
LU54839A1 (enrdf_load_stackoverflow) 1968-09-13
NL6715408A (enrdf_load_stackoverflow) 1968-05-17
BE706208A (enrdf_load_stackoverflow) 1968-05-08
CH500795A (fr) 1970-12-31
GB1191677A (en) 1970-05-13
FR1507302A (fr) 1967-12-29
SE341054B (enrdf_load_stackoverflow) 1971-12-13
NO120161B (enrdf_load_stackoverflow) 1970-09-07
DK117095B (da) 1970-03-16
DE1583735A1 (de) 1970-09-24

Similar Documents

Publication Publication Date Title
US3529321A (en) Deformable mold die
US2582922A (en) Apparatus for molding articles
US3499066A (en) Method for manufacturing isostatically pressed articles having openings or inserts therein
US2893058A (en) Seal ring
US4053267A (en) Die and punch assembly for compacting powder material
US3124092A (en) Plastic mating dies and metallic holder supports therefor
US2847708A (en) Means for making die inserts
US2177461A (en) Molding or shaping die
HU176261B (en) Method and apparatus for pressing metals being in liquid or semi-liquid condition
US3396620A (en) Support for a steel rule die member and method of producing the same
ES2001315A6 (es) Aparato de moldeo de materiales plasticos y similares y metodo correspondiente
US3951580A (en) Positive pressure mold
US3593380A (en) Molding plate of a press mold for making articles of blanks of loose materials
CN214645108U (zh) 一种用于橡胶模具的加压模芯自锁的模具结构
CN210996254U (zh) 一种球头螺栓冷镦成型模具
US2710990A (en) Molding die
US3985844A (en) Process for the production of prismatic graphite molded articles for high temperature fuel elements
JPS59368B2 (ja) セイケイヨウカナガタ
CN209224236U (zh) 一种高精密的雕刻模
SU1270028A1 (ru) Формовочна плита пресс-формы дл изготовлени абразивных инструментов
CN2155970Y (zh) 粉压块模具
US3435501A (en) Method and means for making elliptoids
SU117149A2 (ru) Пресс-форма дл прессовани винтовых пластинок
CN217121498U (zh) 便于更换的冲压模板
SU1344514A1 (ru) Пресс-форма дл изготовлени абразивного инструмента