NO132548B - - Google Patents
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- Publication number
- NO132548B NO132548B NO1449/72A NO144972A NO132548B NO 132548 B NO132548 B NO 132548B NO 1449/72 A NO1449/72 A NO 1449/72A NO 144972 A NO144972 A NO 144972A NO 132548 B NO132548 B NO 132548B
- Authority
- NO
- Norway
- Prior art keywords
- molding compound
- molding
- compound
- column
- ventilated
- Prior art date
Links
- 238000000465 moulding Methods 0.000 claims description 61
- 150000001875 compounds Chemical class 0.000 claims description 46
- 238000000034 method Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000013022 venting Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 2
- 239000012778 molding material Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
Description
Fremgangsmåte og apparat til fremstilling av støperiformer og kjerner. Method and apparatus for the production of mold forms and cores.
Oppfinnelsen angår en fremgangsmåte The invention relates to a method
til fremstilling av støperif ormer og kjerner, ved hvilken formmassen under pneumatisk trykk innføres i den oppvarmede formningsapparatur og overskudd av formmasse fjernes fra formningsapparaturen etter hindring av et tynt formmasselag. for the production of casting molds and cores, in which the molding compound is introduced under pneumatic pressure into the heated molding apparatus and excess molding compound is removed from the molding apparatus after blocking a thin layer of molding compound.
Der kjennes fremgangsmåter til pneumatisk innførelse av en formmasse, det vil si innføring ved hjelp av trykkluft som virker direkte på formmassen, i oppvarmet formningsapparatur til dannelse av et tynt formmasseskall, såkalte skallformer eller hulkjerner. Bortsett fra at innskyvning eller innblåsning av formmassen medfører vanskeligheter, er også fjernelsen av overskudd av formmasse fra formningsapparaturen såvel som tilbakeføringen av denne formmasse i trykkbeholderen, vanskelig. Ved den enkleste utførelsesform for fremgangsmåten blir formmassen gjennom et stigerør trykket fra en trykkedel til hul-rommet i formningsapparaturen. Herved blir det enten ventilert og utluftet ved hver formdel som skal fremstilles eller formmassebeholderen som til stadighet står under trykk lukkes under innblåsningsåpnin-gen ved hjelp av en skyver som holder formassen tilbake. Apparater til gjennom-førelse av denne fremgangsmåte er kompli-serte og kostbare, og gjennomføringen av fremgangsmåten er på ingen måte uten ulemper da formmassen delvis gjennom-trenges av det pneumatiske trykkmiddel, hvilket kan føre til feil i de fremstilte formstykker. There are known methods for pneumatically introducing a molding compound, that is, introduction by means of compressed air which acts directly on the molding compound, in heated forming equipment to form a thin molding compound shell, so-called shell molds or hollow cores. Apart from the fact that pushing in or blowing in the molding compound causes difficulties, the removal of excess molding compound from the molding apparatus as well as the return of this molding compound into the pressure vessel is also difficult. In the simplest embodiment of the method, the molding material is pressed through a riser from a pressure part to the cavity in the molding apparatus. In this way, it is either ventilated and vented at each mold part to be produced or the mold compound container, which is constantly under pressure, is closed below the blow-in opening by means of a pusher that holds the mold compound back. Apparatus for carrying out this method is complicated and expensive, and the carrying out of the method is by no means without disadvantages as the molding compound is partially penetrated by the pneumatic pressure medium, which can lead to errors in the manufactured mold pieces.
Den vesentligste vanskelighet ligger The most significant difficulty lies
imidlertid i tilbakeføringen av den del av formmassen som ikke er blitt bundet ved formningsapparaturens varme. Det må her anvendes oppfangningstrakter, og det formmasseoverskudd som kommer i disse oppfangningstrakter må over ventiler fø-res tilbake i formmassebeholderen som stadig står under trykk. Herved taper man fremstillingstid idet det herunder ikke kan fremstilles formdeler. Man har også ført den overskytende formmasse pneumatisk tilbake fra en oppfangningsbeholder til trykkbeholderen, hvorfra formmassen sky-tes eller blåses inn i formningsapparaturen hvorunder også fremstillingen av formdeler må stilles i bero. En annen løsning går ut på at en øsebeholder som samtidig er utformet som trykkbeholder for formmassen svinges frem og tilbake mellom to stigerør med utblåsningsåpninger og herved øser formmasse. I de fleste tilfeller må, når det fremstilles formdeler hvis form forløper i flere plan, formnings- eller mo-dellapparaturen ved fjernelse av overskytende formmasse også vippes i forskjellige plan for å oppnå en skallkjerne som er hul overalt. however, in the return of the part of the molding compound that has not been bound by the heat of the molding equipment. Collecting funnels must be used here, and the molding compound surplus that comes into these collecting funnels must be fed back via valves into the molding compound container, which is constantly under pressure. This results in a loss of manufacturing time, as molded parts cannot be manufactured below. The excess molding material has also been returned pneumatically from a collection container to the pressure vessel, from where the molding material is shot or blown into the molding equipment, during which the production of molded parts must also be suspended. Another solution is that a ladle container which is also designed as a pressure container for the molding material is swung back and forth between two risers with blow-out openings and thereby scoops molding material. In most cases, when molding parts whose shape extends in several planes are produced, the molding or model apparatus, when removing excess mold mass, must also be tilted in different planes in order to obtain a shell core that is hollow everywhere.
Den foreliggende oppfinnelse bringer nu en løsning på hele problemet ved hvilken hverken formmassebeholderen til stadighet behøver å holdes under trykk eller en komplisert tilbakeføring av overskudd av formmasse er nødvendig. En form-massesøyle heves pneumatisk ved innvirkning av trykkluft direkte på formmassen så høyt at formningsapparaturens hulrom fylles med formmasse, hvoretter form-massesøylen ved hjelp av utluftning faller tilbake og ved det herved oppstående sug suger den overskytende formmasse fra formningsapparaturens hulrom. Det oppstår således en stadig utskyvning og til-baketrekning av formmassesøylen, hvorved den fra formningsapparaturens hulrom ut-sugede formmasse straks kan forarbeides videre ved neste formningsprosess. The present invention now brings a solution to the entire problem, whereby neither the molding compound container needs to be constantly kept under pressure nor is a complicated return of excess molding compound necessary. A molding compound column is raised pneumatically by the impact of compressed air directly on the molding compound so high that the cavity of the molding apparatus is filled with molding compound, after which the molding compound column falls back with the help of venting and the resulting suction sucks the excess molding compound from the cavity of the molding apparatus. There is thus a constant extension and retraction of the mold compound column, whereby the mold compound sucked out of the cavity of the molding apparatus can immediately be further processed in the next molding process.
Den foreliggende fremgangsmåte inne-bærer en betydelig forenkling og lavere omkostninger av hele formningsprosessen ved at enhver avbrytelse bortfaller, en for-økelse av produksjonen og fremfor alt an-vendelsen av meget enkle og billige apparater. The present method entails a significant simplification and lower costs of the entire forming process in that any interruption is eliminated, an increase in production and above all the use of very simple and cheap devices.
Det enkleste apparat til gjennomfø-ring av fremgangsmåten består av en formningsapparatur som bæres av et rør som også tjener som formmassebeholder, og som ved den nedre ende er lukket av en formmassetett, men luftgjennomtrengelig plate som står i forbindelse med et rom som kan ventileres og luftes ut. Den formmasse-tette men luftgjennomtrengelige plate bevirker som følge av sin porøse beskaffen-het, gjennomtrengning av en fullstendig ensartet luftsøyle som skyver formmasse-søylen lukket foran seg og så langt at formningsapparaturens hulrom fylles med formmasse. Hvis det nu luftes ut unnviker luften mellom formmassesøylen og utluft-ningsstedet til det fri, og formmassesøylen følger som en lukket søyle den vikende luft til den plate som lukker røret nedentil, gjennom hvilken bare luften men ikke formmassen kan trenge ut. Ved formmasse-søylens fall oppstår der mellom søylens øvre ende og formningsapparaturen et sug som river med seg det ikke bundne overskudd av formmasse fra formningsapparaturen således at der etter utluftningen bare finnes bundet formmasse i formningsapparaturen og i røret finnes den lukkede formmassesøyle. Formningsapparaturen med skallformen eller kjernen kan tas av og erstattes med det neste, hvoretter pro-sessen begynner påny. The simplest apparatus for carrying out the method consists of a molding apparatus which is carried by a tube which also serves as a molding compound container, and which is closed at the lower end by a molding compound-tight but air-permeable plate which is in connection with a space that can be ventilated and vented out. Due to its porous nature, the molding compound-tight but air-permeable plate causes the penetration of a completely uniform column of air which pushes the molding compound column closed in front of it and so far that the cavity of the molding apparatus is filled with molding compound. If it is now vented, the air between the mold compound column and the venting point escapes to the open air, and the mold compound column follows the receding air as a closed column to the plate that closes the tube below, through which only the air but not the mold compound can penetrate. When the molding compound column falls, a suction occurs between the upper end of the column and the forming apparatus, which sweeps away the unbound excess of molding compound from the molding apparatus so that after venting there is only bound molding compound in the forming apparatus and the closed molding compound column is found in the pipe. The forming apparatus with the shell mold or the core can be removed and replaced with the next one, after which the process begins again.
På tegningen er skjematisk vist en ut-førelsesform for et apparat til gjennom-føring av fremgangsmåten ifølge oppfinnelsen på hvilken alt som ikke er nødven-dig for å forstå oppfinnelsen er utelatt. Apparatet består av et rør 1 som tjener som formmassebeholder, en plate 2 som lukker røret 1 nedentil, et derunder væ-rende ventilerbart og utluftbart rom 3 og en treveiskran 4 som bevirker ventilerin-gen og utluftningen. Ved den øvre ende av røret 1 er der påsatt en formnings- eller modellapparatur 5. The drawing schematically shows an embodiment of an apparatus for carrying out the method according to the invention, on which everything that is not necessary for understanding the invention has been omitted. The apparatus consists of a pipe 1 which serves as a mold compound container, a plate 2 which closes the pipe 1 below, a room 3 which can be ventilated and vented underneath and a three-way valve 4 which causes the ventilation and venting. At the upper end of the pipe 1, a forming or modeling apparatus 5 is attached.
Ved betegnelsen «rør» skal det for-stås enhver formmassebeholder av egnet tverrsnitt, hvilken beholder er vesentlig lengre enn dens diameter, således at det oppstår en formmassesøyle i overensstem-melse med oppfinnelsen. The term "pipe" is to be understood as any molding compound container of a suitable cross-section, which container is significantly longer than its diameter, so that a molding compound column is created in accordance with the invention.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7114885A FR2134206B1 (en) | 1971-04-26 | 1971-04-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
NO132548B true NO132548B (en) | 1975-08-18 |
NO132548C NO132548C (en) | 1975-11-26 |
Family
ID=9075976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO1449/72A NO132548C (en) | 1971-04-26 | 1972-04-25 |
Country Status (17)
Country | Link |
---|---|
US (1) | US3798100A (en) |
AR (1) | AR196194A1 (en) |
BE (1) | BE782631A (en) |
BR (1) | BR7202407D0 (en) |
CA (1) | CA975517A (en) |
CH (1) | CH553870A (en) |
DE (1) | DE2220575C3 (en) |
DK (1) | DK132187C (en) |
ES (1) | ES402120A1 (en) |
FR (1) | FR2134206B1 (en) |
GB (1) | GB1345307A (en) |
IT (1) | IT956239B (en) |
LU (1) | LU65243A1 (en) |
NL (1) | NL167741C (en) |
NO (1) | NO132548C (en) |
SE (1) | SE387974B (en) |
SU (1) | SU396875A3 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2299438A1 (en) * | 1974-06-10 | 1976-08-27 | Rhone Poulenc Textile | PROCESS AND DEVICE FOR THE MANUFACTURE OF NON-WOVEN THERMOPLASTIC CONTINUOUS YARN TABLECLOTHS |
US4209563A (en) * | 1975-06-06 | 1980-06-24 | The Procter & Gamble Company | Method for making random laid bonded continuous filament cloth |
US4392903A (en) * | 1980-05-02 | 1983-07-12 | Toray Industries, Inc. | Process for making a thermal-insulating nonwoven bulky product |
US4346504A (en) * | 1980-07-11 | 1982-08-31 | Hoechst Fibers Industries | Yarn forwarding and drawing apparatus |
US4345927A (en) * | 1980-12-31 | 1982-08-24 | Ppg Industries, Inc. | Apparatus and process for use preparing a continuous strand mat |
JPS62299557A (en) * | 1986-06-10 | 1987-12-26 | 東レ株式会社 | Production of nonwoven fabric |
DD253263A1 (en) * | 1986-10-06 | 1988-01-13 | Karl Marx Stadt Tech Textil | DEVICE FOR PRODUCING ELEMENTARY PATENT LIQUID |
DE10019342B3 (en) * | 1999-07-16 | 2006-02-09 | Sächsisches Textilforschungsinstitut e.V. | Consolidation of non-woven webs uses gas jets at critical velocity produced by parallel or convergent nozzles |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2736676A (en) * | 1953-04-24 | 1956-02-28 | Owens Corning Fiberglass Corp | Fibrous mats and production thereof |
US3511625A (en) * | 1966-08-02 | 1970-05-12 | Owens Corning Fiberglass Corp | Apparatus and method for making a body of multifilament strands |
FR2044098A5 (en) * | 1969-05-08 | 1971-02-19 | Sommer | Forming textured multifilament poly- - propylene yarns |
-
1971
- 1971-04-26 FR FR7114885A patent/FR2134206B1/fr not_active Expired
-
1972
- 1972-03-16 NL NL7203512A patent/NL167741C/en not_active IP Right Cessation
- 1972-04-20 SU SU1779151A patent/SU396875A3/ru active
- 1972-04-20 BR BR2407/72A patent/BR7202407D0/en unknown
- 1972-04-25 AR AR241649A patent/AR196194A1/en active
- 1972-04-25 CH CH613072A patent/CH553870A/en not_active IP Right Cessation
- 1972-04-25 CA CA140,576A patent/CA975517A/en not_active Expired
- 1972-04-25 SE SE7205434A patent/SE387974B/en unknown
- 1972-04-25 BE BE782631A patent/BE782631A/en not_active IP Right Cessation
- 1972-04-25 LU LU65243D patent/LU65243A1/xx unknown
- 1972-04-25 NO NO1449/72A patent/NO132548C/no unknown
- 1972-04-25 DK DK204472A patent/DK132187C/en active
- 1972-04-26 ES ES402120A patent/ES402120A1/en not_active Expired
- 1972-04-26 IT IT23555/72A patent/IT956239B/en active
- 1972-04-26 US US00247874A patent/US3798100A/en not_active Expired - Lifetime
- 1972-04-26 DE DE2220575A patent/DE2220575C3/en not_active Expired
- 1972-04-26 GB GB1941472A patent/GB1345307A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL7203512A (en) | 1972-10-30 |
DK132187B (en) | 1975-11-03 |
US3798100A (en) | 1974-03-19 |
GB1345307A (en) | 1974-01-30 |
NL167741C (en) | 1982-01-18 |
DE2220575C3 (en) | 1982-12-16 |
CH553870A (en) | 1974-09-13 |
DE2220575B2 (en) | 1981-02-05 |
DK132187C (en) | 1976-04-26 |
NO132548C (en) | 1975-11-26 |
DE2220575A1 (en) | 1972-11-09 |
BR7202407D0 (en) | 1973-05-15 |
FR2134206B1 (en) | 1973-12-28 |
LU65243A1 (en) | 1972-07-13 |
ES402120A1 (en) | 1975-03-01 |
FR2134206A1 (en) | 1972-12-08 |
AR196194A1 (en) | 1973-12-10 |
SU396875A3 (en) | 1973-08-29 |
CA975517A (en) | 1975-10-07 |
SE387974B (en) | 1976-09-20 |
NL167741B (en) | 1981-08-17 |
BE782631A (en) | 1972-10-25 |
IT956239B (en) | 1973-10-10 |
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