SE414144B - Anordning for eliminering av lagerspelet hos tryckcylindrar vid tryckmaskiner - Google Patents
Anordning for eliminering av lagerspelet hos tryckcylindrar vid tryckmaskinerInfo
- Publication number
- SE414144B SE414144B SE7710999A SE7710999A SE414144B SE 414144 B SE414144 B SE 414144B SE 7710999 A SE7710999 A SE 7710999A SE 7710999 A SE7710999 A SE 7710999A SE 414144 B SE414144 B SE 414144B
- Authority
- SE
- Sweden
- Prior art keywords
- cylinder
- curves
- cylinders
- pressure
- support
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
- B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
- B41F13/26—Arrangement of cylinder bearings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Presses (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Description
7710999-9
då visar sig såsom streck mellan gummi- och plåtcylindrarna.
Olika anordningar har redan föreslagits för att förhindra
detta vandrande av cylindrarna i sina lager. Således visar exempel-
vis tyska patentskriften 357 509 en lagring hos vilken man söker
förhindra att valsarna i ett valsverk studsar vid valsblockets
inträde. Detta sker med hjälp av ett tredelat lager hos vilket
den mellersta delen är förspänd mot de båda ytterdelarna och däri-
genom lagerspelet elimineras.-
Amerikanska patentskríften 2 362 069 visar en möjlighet
att eliminera lagerspelet genom att ringar på de enskilda cylind-
rarna avrullar på varandra. 7
7 I Enligt tyska Offenlegungsschrift 1 786 213 fastspännes
lagerbussningarna för utjämning av ett lagerspel.
Även den i tyska patentskriften 465 247 beskrivna an-
ordningen är avsedd att förhindra en lägesändring hos cylindrarna
under maskinens gång. Samma syfte tjänar den i tyska patent-
skriften 1 253 282 beskrivna anordningen.
Dessa anordningar uppvisar den olägenheten att de icke
kan användas universellt. Således måste det anses såsom olägenhet
att ömsesidigt fastspänna delade lager, eftersom detta är be-
svärligt.
Heller icke på varandra avrullande ringar innebär någon
fördel, eftersom här en tryckspänningsändring är möjlig endast
i begränsad omfattning.
De nämnda anordningarna har andra olägenheter som med-
för endast partiell framgång med deras användning.
Föreliggande uppfinning söker åstadkomma en anordning
som eliminerar en lägesförändring hos de enskilda cylindrarna
vid tryckningsprocessen.
Denna uppgift löses enligt uppfinningen därigenom att
vid varje cylinders lager kurvhållare är anordnade, vilka upp-
bär stödkurvor, varvid stödkurvorna är anordnade på kurvhållarna
inom området för förbindelselinjen mellan medelpunkterna för två
intill varandra belägna cylindrar, att vid cylindertapparna
církelsegment är fastsatta, som vid sin omkrets är försedda med
rullar vilka vid cylinderkanalernas övertäckning anligger mot
stödkurvorna, varvid cirkelsegmenten i cylinderns omkretsriktning
sträcker sig över cylinderkanalen och det av arket ej övertäckta
7710999-9
cylinderområdet ända till minimiformatet.
I en särskild utföringsform kan kurvhållaren vara fast-
satt vid sidostatívet, varvid fjädrarna uppbär cylindervfldmn.
Uppfinningen förklaras närmare med ledning av bifogade ritning.
Fig. 1a visar en av tre cylindrar bestående tryckenhet
med cylindrarna i full tryckspänning,
fig. 1b visar cylindertapparna i sina lagerbussningar
i det läge i vilket mellan de enskilda ställena enligt fig. 1a
full tryckspänning råder,
fig. 2a visar tryckenheten enligt fig. 1a i ett cylinder-
vinkelläge i vilket cylinderkanalerna hos gummi- och tryckcylind-
rarna möter varandra,
fig. 2b visar cylíndertapparnas läge motsvarande fig. 2a,
fig. 3a visar tryckenheten enligt fig. 1a i ett cylinder-
vinkelläge vid tidpunkten för tryckets början,
fig. 3b visar cylindertapparnas läge motsvarande fig. 3a,
fig. 4 visar tryckenheten efter tryckning av ett ark
med mindre format,
fig. 5 visar lagring av en cylindertapp enligt uppfin-
ningen i Sekti0n ,
fig. 6 visar lagring av cylindertappen enligt fig. 5 i
ändvy,
' fig. 7 visar ett annat utföringsexempel på en cylinder-
lagring i sektion,
fig. 8 visar cylinderlagringen enligt fig. 7 i ändvy.
Tryckenheten enligt fig. 1a består av en plåtcylinder 1,
en gummicylinder 2 och en tryckcylinder 3. På känt sätt är cylind-
rarna försedda med cylinderkanaler 5, 6, 4 i vilka plåt- resp.
gummidukspännanordningen samt arkgriparna är anordnade. Vid
cylindervinkelläget motsvarande fig. 1a befinner sig cylindrarna
under full tryckspänning. Ett förekommande lagerspel skulle in-
ställa sig enligt fig. 1b varvid cylindertapparna är betecknade
med 7 och lagerbussningen med 8.
Enligt fig. 2b avrullar cylinderkanalerna 5 resp. 6 pà
varandra. Tryckspänningen mellan gummicylindern 2 och tryckcylind-
ern 3 bryter ihop och cylindertapparna rör sig ur sitt ursprung-
liga läge till det i fig. 2b antydda läget.
Vid förnyad början av tryckningen enligt fig. 3a in-
7710999-9
ställer sig åter det gamla lagerspelet motsvarande fig. 3b. Ett
sammanbrott i förtid av tryckspänningen uppträder enligt fig. 4
även i sådana fall där ett icke maximalt arkformat tryckes, sär-
skilt då trycksubstratet är tjockt.
Enligt fig. 5 är gummicylindern 2 i en tryckenhet vrid-
bart lagrad i lager 8. Dessa lager är på känt sätt så vridbart
anordnade med excentrisk borrning i sidostativet 9 för trycka.
maskinen att genom vridningen axelavståndsändringar möjliggöres
i förhållande till de andra cylindrarna. Vid lagret 8 är en kurv-
hållare 10 anordnad som uppbär en kurva 11. Denna kurva 11 är
anordnad koncentriskt mot cylindertappen över ett definierat om-
råde, som kan variera beroende på maskintypen. Mot denna kurva
11 anligger rullarna 12 på ett cirkelsegment 13. Dessa rullar 12
är i sin tur anordnade radiellt i förhållande till cylindertappen
7 på ett mot cylinderns diameter svarande avstånd. Cirkelsegmentet
11 ñr så utfört att rullarna 12 sträcker sig över kanalzonen samt
den cylinderyta som icke övertäckes av arket och som ju måste
anses såsom vidgad cylinderkanal. När under driften cylinderns
kanal sammanträffar med granncylinderns kanal, anlägger sig rul-
larna 12 mot kurvan 11. På samma sätt fasthålles cylindern i sitt
läge genom rullarna 12 och kurvan 11 när ett minimalt format
tryckes (jämför fig. 4).
Utföringsexemplet enligt fig. 7 svarar principiellt mot
utföringsformen enligt fig. 5 med endast den skillnada1att stöd-
kurvan 14 icke är inställbar med lagret 8. Kurvan 14 är elastiskt
förbunden med en vid maskinstativet 9 fastsatt kurvhâllare 15 och
pressas genom fjädrar 16, vilka anligger mot kurvhållaren 15, mot
vid kurvhällaren 15 anordnade anslag 17, 18.
I de beskrivna utföringsformerna är kurvorna 11, 14 vid
början och slutet utförda med en stigning 20, som möjliggör en
7 stötfri övergång för rullarna 12 på stödkurvorna 11, 14.
Claims (4)
1. Aordning för eliminering av lagerspelet hos tryckcylind- rar vid tryckmaskiner, särskilt rotationsoffsetttryckmaskiner, k ä n n e t e c k n a d av att vid varje cylinders (1, 2, 3) lager (8) kurvhållare (10, 15) är anordnade, vilka uppbär stödkurvor (11, 14), varvid stödkurvorna (11, 14) är anordnade på kurvhållarna (10, 15) inom området för förbindelselinjen mellan medelpunkterna för två intill varandra belägna cylindrar, att vid cylindertap- parna (7) cirkelsegment (13) är fastsatta som vid sin omkrets är försedda med rullar (12) vilka vid cylinderkanalernas (4, 5, 6) övertäckning anligger mot stödkurvorna (11), varvid cirkelseg- menten (13) i cylhuüarnas omkretsriktning sträcker sig över cylinderkanalen (4, 5, 6) och det av arket ej övertäckta cylinder- området ända till minimiformatet.
2. Anordning enligt krav 1, k ä n n e t e c k n a d av att kurvhàllarna (15) är fastsatta vid maskinstativet (9) och att kurvorna (14) uppbäres av fjädrar (16) vilka är lämpade att stödja cylindern (12).
3. Anordning enligt krav 1eller 2, k ä n n e t e c k n a d av att kurvorna (11, 14) vid början och slutet är försedda med en stigning (20), som möjliggör en stötfri övergång av rullarna (12) på stödkurvorna (11, 14).
4. Anordning enligt krav 2, k ä n n e t e c k n a d av att kurvorna (14) är anordnade att pressas med hjälp av fjädrar (16) mot inställbara anslag (17). ANFÖRDA PUBLIKATIONER:
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2649052A DE2649052C2 (de) | 1976-10-28 | 1976-10-28 | Vorrichtung zum Ausschalten des Lagerspiels an Druckzylindern von Druckmaschinen, insbesondere Rotationsoffsetdruckmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7710999L SE7710999L (sv) | 1978-04-29 |
SE414144B true SE414144B (sv) | 1980-07-14 |
Family
ID=5991744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7710999A SE414144B (sv) | 1976-10-28 | 1977-09-30 | Anordning for eliminering av lagerspelet hos tryckcylindrar vid tryckmaskiner |
Country Status (6)
Country | Link |
---|---|
US (1) | US4149461A (sv) |
DE (1) | DE2649052C2 (sv) |
FR (1) | FR2369092A1 (sv) |
GB (1) | GB1544744A (sv) |
IT (1) | IT1086991B (sv) |
SE (1) | SE414144B (sv) |
Families Citing this family (243)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2824430C2 (de) * | 1978-06-03 | 1980-04-10 | M.A.N.-Roland Druckmaschinen Ag, 6050 Offenbach | Vorrichtung zum Dämpfen der stoßartigen Druckspannung zwischen Gummi- und Druckzylinder an Rotationsdruckmaschinen, insbesondere Bogenrotationsdruckmaschinen |
DE2932887C2 (de) * | 1979-08-14 | 1982-04-22 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Rotationsdruckmaschine mit einer Einrichtung zur Verhinderung von Zylinderbewegungen |
DE2940177C2 (de) * | 1979-10-04 | 1983-05-19 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Vorrichtung zur Erzeugung einer definierten Kraft zum Auseinanderpressen zweier Druckwerkzylinder |
DE2945280C2 (de) * | 1979-11-09 | 1981-06-11 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Zylinder für Rotationsdruckmaschinen |
DE3540581A1 (de) * | 1985-11-15 | 1987-05-21 | Roland Man Druckmasch | Druckwerkzylinder mit einem in dessen zylindergrube angeordneten fuellstueck |
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US472206A (en) * | 1892-04-05 | Island | ||
US738821A (en) * | 1902-02-05 | 1903-09-15 | Frank H Lindner | Printing-press. |
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US1171490A (en) * | 1913-07-02 | 1916-02-15 | Wood Newspaper Mach Corp | Bearing device for printing-couples. |
US1338347A (en) * | 1915-06-25 | 1920-04-27 | Wood Newspaper Mach Corp | Adjustable bearer for printing-couples |
US1692814A (en) * | 1923-04-20 | 1928-11-27 | Goss Printing Press Co Ltd | Printing press |
US1816935A (en) * | 1928-12-01 | 1931-08-04 | Wood Newspaper Mach Corp | Antijumping device for form rollers |
US1900664A (en) * | 1930-10-31 | 1933-03-07 | Harris Seybold Potter Co | Printing press |
US2293886A (en) * | 1941-05-05 | 1942-08-25 | George W Swift Jr Inc | Printing machine |
DE741626C (de) * | 1941-05-23 | 1943-11-13 | Heinrich Habig Ag | Lagerung fuer die Druckwalzen von Walzendruckmaschinen, insbesondere fuer die Stoffdruckerei |
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1976
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- 1977-09-30 SE SE7710999A patent/SE414144B/sv not_active IP Right Cessation
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DE2649052B1 (de) | 1978-06-01 |
FR2369092A1 (fr) | 1978-05-26 |
US4149461A (en) | 1979-04-17 |
FR2369092B1 (sv) | 1982-11-19 |
IT1086991B (it) | 1985-05-31 |
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