US731367A - Means and apparatus for molding hollow articles. - Google Patents

Means and apparatus for molding hollow articles. Download PDF

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Publication number
US731367A
US731367A US11933202A US1902119332A US731367A US 731367 A US731367 A US 731367A US 11933202 A US11933202 A US 11933202A US 1902119332 A US1902119332 A US 1902119332A US 731367 A US731367 A US 731367A
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United States
Prior art keywords
blank
plunger
cushion
mold
molding
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Expired - Lifetime
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US11933202A
Inventor
Carl Huber
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.)
GESELLSCHAFT fur HUBERPRESSUNG OF KARLSRUHE GmbH
HUBERPRESSUNG GES OF KARLSRUHE GES mbH
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HUBERPRESSUNG GES OF KARLSRUHE GES mbH
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Publication date
Application filed by HUBERPRESSUNG GES OF KARLSRUHE GES mbH filed Critical HUBERPRESSUNG GES OF KARLSRUHE GES mbH
Priority to US11933202A priority Critical patent/US731367A/en
Application granted granted Critical
Publication of US731367A publication Critical patent/US731367A/en
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    • 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
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material
    • 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
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/50—Use of fluid pressure in molding

Definitions

  • This invention relates to the manufacture of hollow articles from a flat blank or plate by means of a flexible hollow pressing device filled with liquid, which I will term a watercushion and which is so arranged and operated that it serves both as a drawing-tool for drawing the flat blank into a mold and also as the pressing-tool for pressing the drawn object into the required shape.
  • the mold or matrix m for the hollow article to be produced which is preferably formed of four separate parts, is contained in a coned .outer casing upon which is laid the sheetmetal blank or plate I). This is held down upon the mold by a tubular holding device 01, which is provided with an annular watercushion 76, adapted to press upon the sheetmetal blank, while the plunger 19, with its water-cushion w, effects the drawing operation.
  • the plungerp which is subject to the pres- I sure of the platen a of a hydraulic or other press, is of tubular form, so as to receive within it the tubular extension 10 of the water-cushion to, which forms a flexible continuation of the plunger 12.
  • the tubular extension w is open at the upper end for enabling the cushion w to be filled with liquid, the upper end of the plunger-bore being closed by a screw-plug c after the filling has been effected.
  • the holding device at is movably connected to the upper flanged end of the plunger 13 by bolts cl, on which are mounted helical springs f, whereby the downward pressure exerted by the platen a upon the plunger 19 is transmitted in a yielding manner to the holder '12,
  • the springs f cause the holder n to project with its lower end somewhat below the lower end of the water-cushion 111, so that as the platen and plunger descend the cushion 7c of the holder is first made to bear upon the blank I so as to hold it before the plunger 1) and water-cushion to begin todrawthe central part of the blank into the mold.
  • the flexible water-cushion to can either be made of caoutchouc or of leather or other suitable flexible material that will withstand the required pressure.
  • the apparatus is employed for molding articles out of a blank of celluloid or other material-such as pulverulenthorn, marble, and the like-that requires heat combined with pressure for molding and consolidating it the water-cushion is heated by filling it with hot water or other suitable hot liquid.
  • Apparatus for molding hollow articles from a flat blank consisting of the combination of a plunger, a flexible receptacle filled with liquid carried by said plunger, and a the arrangement being such that before the tubularholding-down device surroundingthe lower part of the plunger with the flexible receptacle and adapted to hold a flat blank upon upon the edges of the blank while the plunger and water-cushion effect the drawing and molding of the central part thereof, substantially as descri bed.
  • An apparatus for molding hollow articles from a flat blank comprising the combination with aplunger and mold, of a flexible receptacle containing a liquid and adapted to 0perate as a tool for drawing the blank into the mold and then acting as an expanding molding-tool for causing the drawn blank to assume the configuration of the mold, and means for suitably holding the blank upon a mold for the purpose set forth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

.PATENTBD JUNE 16, 1903..
C. HUBER. MEANS AND APPARATUS FOR MOLDING HOLLOW ARTICLES.
APPLIUATION FILED AUG. 11, 1902.
N0 MODEL.
W629i 6136 as,
I No. 731,367,
UNITED STATES Patented June 16, 1903.
PATENT rFIcE,
OARL HUBER, OF KARLSRUHE, GERMANY, ASSIGNOR TO GESELLSCHAFT FUR HUBERPRESSUNG GESELLSOHAFT MIT BESCHRANKTER I'IAFTUNG OF KARLSRUH E, OF BADEN, GERMANY.
MEANS AND APPARATUS FOR MOLDING HOLLOW ARTICLES.
SPECIFICATION forming part of Letters Patent No. 731,367, dated June 16, 1903.
Application filed August 11, 1902. Serial No. 119,332- (No model.)
To (Mfr/17mm, it may concern:
Be it known that I, CARL HUBER, a citizen of Germauy,residing at 38 BeiertheimerAllee,
Karlsr'uhe, Baden, Germany, have invented,
certain new and useful Improved Means and Apparatus for Molding I-Iollow Articles, (for which I have applied for a patent in Great Britain, dated January 16, 1902, No. 1,225,) of which the following is a specification.
This invention relates to the manufacture of hollow articles from a flat blank or plate by means of a flexible hollow pressing device filled with liquid, which I will term a watercushion and which is so arranged and operated that it serves both as a drawing-tool for drawing the flat blank into a mold and also as the pressing-tool for pressing the drawn object into the required shape.
I will describe the apparatus which I employ for the purpose of my invention with reference to the accompanying drawing, which represents a vertical section of the same.
The mold or matrix m for the hollow article to be produced,which is preferably formed of four separate parts, is contained in a coned .outer casing upon which is laid the sheetmetal blank or plate I). This is held down upon the mold by a tubular holding device 01, which is provided with an annular watercushion 76, adapted to press upon the sheetmetal blank, while the plunger 19, with its water-cushion w, effects the drawing operation.
The plungerp, which is subject to the pres- I sure of the platen a of a hydraulic or other press, is of tubular form, so as to receive within it the tubular extension 10 of the water-cushion to, which forms a flexible continuation of the plunger 12. The tubular extension w is open at the upper end for enabling the cushion w to be filled with liquid, the upper end of the plunger-bore being closed by a screw-plug c after the filling has been effected. I
The holding device at is movably connected to the upper flanged end of the plunger 13 by bolts cl, on which are mounted helical springs f, whereby the downward pressure exerted by the platen a upon the plunger 19 is transmitted in a yielding manner to the holder '12,
descent of the platen the springs f cause the holder n to project with its lower end somewhat below the lower end of the water-cushion 111, so that as the platen and plunger descend the cushion 7c of the holder is first made to bear upon the blank I so as to hold it before the plunger 1) and water-cushion to begin todrawthe central part of the blank into the mold. When by thisoperation the bottom of the cushion w is brought to bear againstthe bottom of the mold m, with the interposition of part of the drawn blank, then on the'continuation of the downward motion of the plunger the increasing pressure transmitted to ,all parts of the confined body of water in the cushion 20 will cause this to be bulged out laterally, whereby the drawn blank 11 will be expanded in a corresponding manner, so as to assume the configuration of the mold m and of any ornamentation that may exist thereon. On the completion of the molding operation the plunger 19, together with the water-cushion w and holder n, are drawn upward again, so as to allow the molded hollow article to be removed from the mold.
The flexible water-cushion to can either be made of caoutchouc or of leather or other suitable flexible material that will withstand the required pressure. When the apparatus is employed for molding articles out of a blank of celluloid or other material-such as pulverulenthorn, marble, and the like-that requires heat combined with pressure for molding and consolidating it the water-cushion is heated by filling it with hot water or other suitable hot liquid.
Having thus described the nature of this invention and the best means I know of carrying the same into practical effect, I claim 1. Apparatus for molding hollow articles from a flat blank consisting of the combination of a plunger, a flexible receptacle filled with liquid carried by said plunger, and a the arrangement being such that before the tubularholding-down device surroundingthe lower part of the plunger with the flexible receptacle and adapted to hold a flat blank upon upon the edges of the blank while the plunger and water-cushion effect the drawing and molding of the central part thereof, substantially as descri bed.
3. An apparatus for molding hollow articles from a flat blank, comprising the combination with aplunger and mold, of a flexible receptacle containing a liquid and adapted to 0perate as a tool for drawing the blank into the mold and then acting as an expanding molding-tool for causing the drawn blank to assume the configuration of the mold, and means for suitably holding the blank upon a mold for the purpose set forth.
In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.
CARL HUBER.
Witnesses:
HENRY HASPER, WoLDEMAR HAUPT.
US11933202A 1902-08-11 1902-08-11 Means and apparatus for molding hollow articles. Expired - Lifetime US731367A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606516A (en) * 1947-12-16 1952-08-12 Harbor Aircraft Corp Apparatus for forming sheet metal material
US2659106A (en) * 1950-02-08 1953-11-17 Albert G Leicht Method of making dentures
US2696184A (en) * 1951-05-16 1954-12-07 Pastushin Aviat Corp Apparatus for forming hollow bodies
US2761405A (en) * 1953-12-14 1956-09-04 Svenska Aeroplan Ab Hydraulic forming attachment for presses
US2761404A (en) * 1953-12-22 1956-09-04 Svenska Aeroplan Ab Hydraulic forming attachment for presses
US2821945A (en) * 1953-08-27 1958-02-04 Peccerill Donald Apparatus for forming sheet metal articles
US2861531A (en) * 1956-07-10 1958-11-25 Svenska Aeroplan Ab Hydraulic forming attachment for presses
US2942298A (en) * 1954-12-28 1960-06-28 Unexcelled Chemical Corp Molding apparatus
US3208104A (en) * 1961-01-28 1965-09-28 Ornapress A G Ornamentation of plastic articles
US3724247A (en) * 1970-06-02 1973-04-03 Alcan Res & Dev Production of deep drawn pressings

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606516A (en) * 1947-12-16 1952-08-12 Harbor Aircraft Corp Apparatus for forming sheet metal material
US2659106A (en) * 1950-02-08 1953-11-17 Albert G Leicht Method of making dentures
US2696184A (en) * 1951-05-16 1954-12-07 Pastushin Aviat Corp Apparatus for forming hollow bodies
US2821945A (en) * 1953-08-27 1958-02-04 Peccerill Donald Apparatus for forming sheet metal articles
US2761405A (en) * 1953-12-14 1956-09-04 Svenska Aeroplan Ab Hydraulic forming attachment for presses
US2761404A (en) * 1953-12-22 1956-09-04 Svenska Aeroplan Ab Hydraulic forming attachment for presses
US2942298A (en) * 1954-12-28 1960-06-28 Unexcelled Chemical Corp Molding apparatus
US2861531A (en) * 1956-07-10 1958-11-25 Svenska Aeroplan Ab Hydraulic forming attachment for presses
US3208104A (en) * 1961-01-28 1965-09-28 Ornapress A G Ornamentation of plastic articles
US3724247A (en) * 1970-06-02 1973-04-03 Alcan Res & Dev Production of deep drawn pressings

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