CS248201B1 - A device for rewinding hollows - Google Patents
A device for rewinding hollows Download PDFInfo
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- CS248201B1 CS248201B1 CS1008182A CS1008182A CS248201B1 CS 248201 B1 CS248201 B1 CS 248201B1 CS 1008182 A CS1008182 A CS 1008182A CS 1008182 A CS1008182 A CS 1008182A CS 248201 B1 CS248201 B1 CS 248201B1
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- CS
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- mandrel
- washer
- extrusion
- thrust
- movable
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Podstata zariadenia spočívá v tom, že pozostáva z prietlačníka a prietlačnice, v (ktorej funkčnom otvore je vložený třň zo spodu podopretý podložkou, pričom prietlačnica s vloženým třňom a podložka sú voči sebe pohyblivo usporiadané a třň i prietlačnica sú v osovom smere vzájomne stacionárně usporiadané pomocou čiastočne predtlačeného polotovaru.The essence of the device is that it consists of an extruder and an extrusion die, in the functional opening of which a mandrel is inserted and supported from below by a washer, while the extruder with the inserted mandrel and the washer are arranged movably relative to each other and the mandrel and the extrusion die are arranged stationary relative to each other in the axial direction by means of a partially pre-pressed blank.
Description
248201248201
Vynález sa týká zariadenia na výrobu du-tých výtvarkov pretláčaním, u ktorého jeriešené vzájomné usporiadanie prietlačnicea v nej vloženého 'třňa zo spodu podopre-tého podložkou tak, že súčasne s pretlá-čaním polotovaru dochádza aj k jeho ztiera-niu z třňa.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extrusion apparatus for extrusion, wherein the extrusion of a die and a mandrel inserted therefrom from below is supported so that, at the same time, the extrusion of the preform takes place from the mandrel.
Doteraz používané zariadenia na výrobudutých výtvarkov sú charakterizované tým,že prietlačnica a v nej vložený třň sú v o-sovom smere voči sebe usporiadané pohyb-livo. To má za následok, že hotový výtvarokje po přetlačení nutné zotrieť z třňa v o-pačnom ismere voči zmyslu pósobenia tvár-niacej sily. Přitom dochádza zároveň kuzmene zmyslu pósobenia sil trenia, čo vediek nalepovaniu materiálu výtvarku na třň av konečnom dóslediku k deštrukcii třňa. Ta-kéto zariadenia majú vel'mi nízku životnosta pře výrobu dutých výtvarkov z ťažkotvár-nitelných materiálov a z polotovarov s vel-kým štíhlostným pomerom sú nepoužitelné.The devices used so far for the manufactured products are characterized in that the passageway and the insert inserted therein are movable in relation to one another. This results in the finished artist having to be wiped from the mandrel in the opposite direction to the sense of effect of the shaping force after overprinting. At the same time, there is a lack of sense of frictional forces, which in turn leads to the sticking of the art material to the spike and ultimately to the destruction of the spine. These devices have a very low lifetime for the production of hollows made of heavy-formable materials and of semi-products with a large slenderness ratio are unusable.
Uvedené nedostatky odstraňuje zariade-nie na pretláčanie dutých výtvarkov, pozo-stávajúce z prietlačníka a prietlačnice svloženým třňom podlá vynálezu, ktoréhopodstata spočívá v tom, že třň je podopretýpodložkou, pričom prietlačnica a podložkasú voči sebe pohyblivo usporiadané a třň aprietlačnica sú v osovom smere vzájomnestacionárně usporiadané.The above-mentioned drawbacks are eliminated by the hollow-extrusion apparatus consisting of a push-through and a push-fit sleeve according to the invention, the principle being that the mandrel is supported by a pad, wherein the pin and the washer are displaceably disposed relative to each other and .
Zariadenie podlá vynálezu je jednoduchéa umožňuje vyrábať pretláčaním výtvarkys priebežným otvorom lubovolného priere-zu, vyznačujúce sa vysokou geometrickoua tvarovou presnosťou. Jeho výhodou je, ževzájomné stacionárně usporiadanie prie-tlačnice a třňa umožňuje súčasne s pretlá-čaním polotovaru prietlačnicou s do nejvloženým třňom ztieranie už přetlačenéhopolotovaru z třňa. Třň vložený v prietlačnici je namáhanýlen tlakom v smere pósobenia tvárniacejsily a nie aj tahovým namáháním ako u do-teraz známých zariadení na výrobu dutýchpolotovarov s priebežným otvorom pretlá-čaním, u kterých je nutné výtvarok ztieraťz třňa až po úplnoni přetlačení v smere o-pačnom voči směru posobenia tvárniacejsily. To má za. následok podstatné zvýšeniéživotnosti třňa a tým aj: celého zariadeniana pretljáčanie, ' i Příklad zariadenia podlá vynálezu je< ,· i l· ý; i schematicky znázorněný na priloženom vý-krese v nárysnom řeze.The device according to the invention is simple and makes it possible to produce by extrusion of an art through a continuous opening of any size characterized by high geometrical and shape accuracy. Its advantage is that the stationary arrangement of the transducer and the mandrel allows the wiping of the pre-extruded material from the mandrel simultaneously with the extrusion of the blank by means of a die with a thrust in the thrust. The thrust inserted in the extruder is subjected to pressure in the downstream direction and has not been subjected to tensile stress, as in the prior art hollow extrusion apparatus for extrusion, in which the thrust is to be wiped off only after full extrusion in the opposite direction the direction of the posting they did. He has it. the result of a substantial increase in the lifetime of the yoke and hence of the entire over-stroke device. An example of the device according to the invention is; schematically illustrated in the accompanying drawing in front view.
Zariadenie pozostáva z třňa 2 uloženéhovo funkčnom otvore bandážovanej prietlač-nice 3, pevne uchytenej v základnom telese 4 pomocou objímky S. Třň 2 je vo funkčnomotvore prietlačnice 3 centrovaný čiastočnepredtlačeným polotovarom 1 ako i samot-ným prietlačníkom 6, ktorý je pevne ulože-ný v kotevnej doske 7. Třň 2 je pri lisovaní zo spodu podopretýpodložkou 8, ktorá je v okamihu, keď nanástroj nepůsobí tvárniaca sila pohybliváv priečnom smere vzhladom ik směru liso-vania. Bandážovaná prietlačnica 3, pevnespojená so základným telesom 4 objímkou 5 tvoří spodnú pohyblivá část nástroja, kto-rá je vedená kolikmi 9 v smere lisovaniavoči pevnej spodnej časti nástroja 10.The device consists of a mandrel 2 with a functional opening of the bandaged push-in 3 fixed in the base body 4 by means of a sleeve S. The mandrel 2 is in the function of the push-through 3 centered by the partially preformed blank 1 as well as by the flow-through 6 itself. The thrust plate 2 is supported on the bottom by a support 8, which, when pressed, does not move the transverse direction with respect to the pressing direction. The bandaged fitting 3 connected to the base body 4 by the sleeve 5 forms a lower movable part of the tool which is guided by the tines 9 in the direction of the press-fitting lower part of the tool 10.
Pohyblivá spodná časť nástroja je ulože-ná na pružných elementoch 11, ktoré súumiestnené v otvoroch spodnej časti ná-stroja 10. Spodná pohyblivá časť nástrojaje v ipriebehu lisovania pritláčaná k pevnejspodnej časti nástroja 10 a po odlehčeníje pohyblivá spodná časť nástroja nadvih-nutá pružnými elementární 11, čím sa od-1’ahčí aj pohyblivá podložka 8 podopierajúcatřň 2. Po vysunutí uvofnenej podložky vsmere priečnom k smere lisovania vzniknev spodnej pevnej časti nástroja 10 priestorpre vypadnutie hotového výtvarku zo zaria-denia.The movable lower part of the tool is supported on the elastic elements 11, which are located in the openings of the lower part of the tool 10. The lower movable part of the tool presses against the fixed part of the tool 10 and presses the movable lower part of the tool up by the elastic elementary elements 11. thereby releasing the movable washer 8 supporting it. After the release of the released washer in the transverse direction to the pressing direction of the lower fixed part of the tool 10, the finished art is removed from the device.
Pohyblivé usporiadanie prietlačnice 3 svloženým třňom 2 voči podložke 8 je možnérealizovat například aj tak, že podložka 8je voči prietlačnici 3 s vloženým třňom 2nepohyblivá a v osovom smere sa pohybujelen prietlačnica 3 s vloženým třňom 2 pro-st.redníctvom pružných elementov 11 tak,aby medzi podložkou 8 a spodným ikoncomtřňa 2 vznikol dostatečné velký priestor navypadnutie výtvarku zo zariadenia.It is also possible to realize the movable arrangement of the gate 3 with the thrust 2 in relation to the washer 8, for example in that the washer 8 is movable relative to the thrust 3 with the thrust inserted 2 and the thrust 3 with the thrust 2 inserted through the elastic elements 11 is moved in the axial direction such that between the washer 8 and the lower iconcomputer 2 created a large enough space to drop the art from the device.
Dalším príkladom pohyblivého usporiada-nia prietlačnice 3 s vloženým třňom 2 jeusporiadanie, pri ktorom je podložka 8 po-hyblivá v osovom smere.A further example of a movable arrangement of the presser 3 with an inserted spindle 2 is an arrangement in which the washer 8 is movable in the axial direction.
Princip zariadenia podlá vynálezu je mož-né s výhodou využit vo všetkých zariade-niach na výrobu tak uzavretých ako· i otvo-rených dutých výtvarkov s priebežným o-tvorom pretláčaním s konštantným priere-zom, ako i s přírubou.The principle of the device according to the invention can be advantageously used in all devices for the production of both closed and open hollow sections with a continuous extrusion mold with a constant cross-section as well as with a flange.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS1008182A CS248201B1 (en) | 1982-12-31 | 1982-12-31 | A device for rewinding hollows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS1008182A CS248201B1 (en) | 1982-12-31 | 1982-12-31 | A device for rewinding hollows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS248201B1 true CS248201B1 (en) | 1987-02-12 |
Family
ID=5447871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS1008182A CS248201B1 (en) | 1982-12-31 | 1982-12-31 | A device for rewinding hollows |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS248201B1 (en) |
-
1982
- 1982-12-31 CS CS1008182A patent/CS248201B1/en unknown
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