{"id":284,"date":"2008-05-09T17:47:49","date_gmt":"2008-05-09T15:47:49","guid":{"rendered":"http:\/\/www.darkart.cz\/?page_id=284"},"modified":"2008-05-09T18:13:07","modified_gmt":"2008-05-09T16:13:07","slug":"technicka-stranka","status":"publish","type":"page","link":"https:\/\/darkart.cz\/?page_id=284","title":{"rendered":"Technick\u00e1 str\u00e1nka"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
<\/a>\"scheme\"<\/a><\/td>\nKonstrukce americk\u00e9 retu\u0161e se od dob jej\u00edho vzniku p\u0159\u00edli\u0161 nezm\u011bnila. Samoz\u0159ejm\u011b se v\u00fdrobci sna\u017e\u00ed st\u00e1le zdokonalovat mechaniku a materi\u00e1l, ze kter\u00e9ho jsou retu\u0161e vyrobeny, ale princip z\u016fst\u00e1v\u00e1 stejn\u00fd. Tvar retu\u0161e je co nejv\u00edce p\u0159izp\u016fsoben podob\u011b pera, aby bylo doc\u00edleno co nejp\u0159irozen\u011bj\u0161\u00edho dr\u017een\u00ed n\u00e1stroje. Stla\u010den\u00fd vzduch p\u0159ich\u00e1z\u00ed pru\u017enou hadic\u00ed, kter\u00e1 je napojena na konektor pistole. Proud vzduchu je ovl\u00e1d\u00e1n p\u00e1\u010dkou, kter\u00e1 je na h\u0159betu n\u00e1stroje, p\u0159\u00edmo naproti p\u0159\u00edvodu vzduchu. P\u0159ed p\u00e1\u010dkou je obvykle n\u00e1dobka, do kter\u00e9 se nal\u00e9v\u00e1 barva. Celou retu\u0161\u00ed prob\u00edh\u00e1 v jej\u00ed ose dlouh\u00e1 jehla, kter\u00e1 je vzadu ji\u0161t\u011bna matic\u00ed a v p\u0159edu proch\u00e1z\u00ed otvorem trysky, kterou tak uzav\u00edr\u00e1. P\u0159i stisku p\u00e1\u010dky se jehla posouv\u00e1 zp\u00e1tky, \u010d\u00edm\u017e otv\u00edr\u00e1 otvor trysky a dovoluje vzduchem nas\u00e1van\u00e9 barv\u011b expandovat ven. Paprsek barvy, kter\u00e1 vych\u00e1z\u00ed z trysky m\u00e1 tvar \u00fazk\u00e9ho ku\u017eelu. Z toho vypl\u00fdv\u00e1, \u017ee \u010d\u00edm bl\u00ed\u017ee je tryska k podkladu, t\u00edm men\u0161\u00ed a ost\u0159ej\u0161\u00ed te\u010dku ud\u011bl\u00e1, co\u017e plat\u00ed i naopak, kdy p\u0159i v\u011bt\u0161\u00ed vzd\u00e1lenosti je zasa\u017eena v\u011bt\u0161\u00ed plocha. Proto se tenk\u00e9 a ostr\u00e9 \u010d\u00e1ry daj\u00ed vytvo\u0159it jedin\u011b v p\u0159\u00edpad\u011b, \u017ee je tryska minim\u00e1ln\u011b vzd\u00e1lena od malovan\u00e9ho povrchu.<\/td>\n<\/tr>\n
Retu\u0161e m\u016f\u017eeme rozd\u011blit podle n\u011bkolika hledisek.
\nPodle toho, jak se p\u0159i pou\u017e\u00edv\u00e1n\u00ed retu\u0161e m\u00eds\u00ed barva se vzduchem d\u011bl\u00edme retu\u0161e na:<\/strong><\/td>\n<\/tr>\n
\"gun_003\"<\/td>\n1. S intern\u00edm m\u00edch\u00e1n\u00edm vzduch\/barva<\/strong><\/span> <\/strong>(internal mix)<\/strong> – toto plat\u00ed pro v\u011bt\u0161inu pou\u017e\u00edvan\u00fdch retu\u0161\u00ed, barva je v n\u00e1dobce, odkud se nas\u00e1v\u00e1n\u00edm nebo samosp\u00e1dem dostane do t\u011bla retu\u0161e, kde se sm\u00eds\u00ed se vzduchem a odch\u00e1z\u00ed tryskou ven. Tyto retu\u0161e jsou nejpou\u017e\u00edvan\u011bj\u0161\u00ed, li\u0161\u00ed se velikost\u00ed trysek, obsahem a um\u00edst\u011bn\u00edm n\u00e1dobek a svou funkc\u00ed.<\/td>\n<\/tr>\n
\"gun_002\"<\/td>\n2. S extern\u00edm m\u00edch\u00e1n\u00edm vzduch\/barva<\/strong><\/span> (external mix)<\/strong> – tyto retu\u0161e pracuj\u00ed na principu fix\u00edrky, vzduch proud\u00edc\u00ed tryskou strh\u00e1v\u00e1 barvu, kter\u00e1 je v n\u00e1dobce p\u0159ed tryskou a rozpra\u0161uje ji. Tyto retu\u0161e se pou\u017e\u00edvaj\u00ed hlavn\u011b pro velk\u00e9 plochy a p\u0159echody nehod\u00ed se pro detailn\u00ed pr\u00e1ci. Jejich v\u00fdhodou je snadn\u00e9 \u010di\u0161t\u011bn\u00ed a v\u011bt\u0161inou i rychl\u00e1 v\u00fdm\u011bna barev.<\/td>\n<\/tr>\n
D\u00e1le d\u011bl\u00edme retu\u0161e podle toho, kde je um\u00edst\u011bna n\u00e1dobka na barvu na:<\/strong><\/td>\n<\/tr>\n
\"gun_005\"<\/td>\n1. Gravity Feed – n\u00e1dobka, jej\u00ed\u017e dno je otev\u0159eno p\u0159\u00edmo do kan\u00e1lku s jehlou vedouc\u00ed k trysce (vhodn\u00e1 pro hust\u0161\u00ed a t\u011b\u017e\u0161\u00ed typy barev). Je nej\u010dast\u011bji pevn\u011b spojena s t\u011blem pistole nebo je dokonce provedena jako prohlube\u0148. Tyto retu\u0161e jsou v\u011bt\u0161inou ur\u010deny pro p\u0159esnou a velmi detailn\u00ed pr\u00e1ci, kdy sta\u010d\u00ed mal\u00e9 objemy barev (kolem 2ml). Je nutno podotknout, \u017ee se tyto n\u00e1dobky obt\u00ed\u017en\u011b \u010dist\u00ed a proto je tomuto faktu nutno v\u011bnovat pozornost.<\/td>\n<\/tr>\n
\"gun_004\"<\/td>\n2. Siphon Feed – n\u00e1dobky na principu sifonu, kdy je barva nas\u00e1v\u00e1na shora trubi\u010dkou uvnit\u0159 n\u00e1dobky. Hod\u00ed se na inkousty a \u0159\u00eddk\u00e9 barvy. Umo\u017e\u0148uje pr\u00e1ci bez rizika rozlit\u00ed barvy, m\u00e1 v\u011bt\u0161\u00ed objem a p\u0159ipojuje se bu\u010f z boku pistole (Side Feed) nebo ze zdola (Bottom Feed). Tyto n\u00e1dobky najdeme nej\u010dast\u011bji u retu\u0161\u00ed ur\u010den\u00fdch pro st\u0159\u00edk\u00e1n\u00ed v\u011bt\u0161\u00edch ploch. Retu\u0161e s n\u00e1dobkami na principu sifonu maj\u00ed v\u00fdhodu v tom, \u017ee u nich lze velmi pohodln\u011b m\u011bnit n\u00e1dobky s r\u016fzn\u00fdmi barvami, co\u017e usnad\u0148uje pr\u00e1ci a \u0161et\u0159\u00ed \u010das.<\/td>\n<\/tr>\n
\"gun_001\"\"gun_006\"<\/td>\n3. Side Feed – n\u00e1dobka je p\u0159ipojena z boku pistole a m\u016f\u017ee pracovat na principu Gravity i Siphon Feed. Tyto n\u00e1dobky lze v\u011bt\u0161inou um\u00edstit bu\u010f na lev\u00fd nebo na prav\u00fd bok pistole, podle toho, jak n\u00e1m to vyhovuje. Lze ji nat\u00e1\u010det podle \u00fahlu a sklonu retu\u0161e tak, aby se barva nevylila. Tato konstrukce p\u0159edur\u010duje retu\u0161 k p\u0159esn\u00e9 a detailn\u00ed pr\u00e1ci a nav\u00edc umo\u017e\u0148uje p\u0159\u00edm\u00fd pohled na p\u0159edek pistole, kter\u00fd u jin\u00fdch retu\u0161\u00ed z um\u011blcova pohledu v\u011bt\u0161inou zakr\u00fdv\u00e1 n\u00e1dobka na barvu.<\/td>\n<\/tr>\n
Retu\u0161e se d\u011bl\u00ed hlavn\u011b podle toho, jak se v nich vzduch m\u00eds\u00ed s barvou.
\nRozezn\u00e1v\u00e1me t\u0159i z\u00e1kladn\u00ed druhy:<\/strong><\/td>\n<\/tr>\n
1. JEDNO\u010cINN\u00c9
\n(single action)<\/strong><\/td>\n		– Ovl\u00e1dac\u00ed p\u00e1\u010dka \u0159\u00edd\u00ed jen p\u0159\u00edvod vzduchu. P\u0159\u00edtok barvy ovliv\u0148uje pozice jehly v trysce. Nen\u00ed mo\u017en\u00e9 plynule m\u011bnit pom\u011bry v p\u0159\u00edtoku a mno\u017estv\u00ed barvy. Tyto retu\u0161e jsou jednoduch\u00e9, ale tak\u00e9 p\u0159esn\u00e9 a spolehliv\u00e9. Jsou vhodn\u00e9 pro za\u010d\u00e1te\u010dn\u00edky, kte\u0159\u00ed s nimi mohou dos\u00e1hnout zaj\u00edmav\u00fdch v\u00fdsledk\u016f. Lze je tak\u00e9 pou\u017e\u00edvat pro st\u0159\u00edk\u00e1n\u00ed v\u011bt\u0161\u00edch ploch (tryska s v\u011bt\u0161\u00edm otvorem 0,4 – 0,5mm), kde nen\u00ed vy\u017eadov\u00e1n detail nebo n\u011bjak\u00fd speci\u00e1ln\u00ed efekt. Jsou vhodn\u00e9 u t\u011bch prac\u00ed, kde je vy\u017eadov\u00e1no rovnom\u011brn\u00e9 rozlo\u017een\u00ed barvy. Jedno\u010dinn\u00e9 retu\u0161e maj\u00ed v\u0161eobecn\u011b v\u011bt\u0161\u00ed trysky a p\u0159\u00edtokov\u00fd kan\u00e1lek, proto se hod\u00ed pro visk\u00f3zn\u011bj\u0161\u00ed a hust\u0161\u00ed barvy. U n\u011bkter\u00fdch jedno\u010dinn\u00fdch retu\u0161\u00ed lze m\u011bnit alespo\u0148 mno\u017estv\u00ed barvy pomoc\u00ed oto\u010dn\u00e9ho regul\u00e1toru v n\u00e1sadce. Nelze ho v\u0161ak pou\u017e\u00edvat plynule a pr\u00e1ce se mus\u00ed na okam\u017eik p\u0159eru\u0161it. Jedno\u010dinn\u00e9 retu\u0161e lze bezpe\u010dn\u011b poznat podle toho, \u017ee jejich ovl\u00e1dac\u00ed p\u00e1\u010dka m\u00e1 jen sm\u011br dol\u016f a ne i dozadu. Jsou v\u011bt\u0161inou levn\u011bj\u0161\u00ed ne\u017e double – action pistole.<\/td>\n<\/tr>\n
2. DVOJ\u010cINN\u00c9 JEDNODUCH\u00c9
\n(double action – single)<\/strong><\/td>\n		– Ovl\u00e1dac\u00ed p\u00e1\u010dka ovl\u00e1d\u00e1 v prvn\u00ed f\u00e1zi vzduch a v druh\u00e9 f\u00e1zi mno\u017estv\u00ed barvy. Jejich p\u0159ednost\u00ed je p\u0159esnost a snadno zvl\u00e1dnuteln\u00e1 obsluha.<\/td>\n<\/tr>\n
3. NEZ\u00c1VISLE DVOJ\u010cINN\u00c9
\n(double action)<\/strong><\/td>\n		– Ovl\u00e1dac\u00ed p\u00e1\u010dka funguje ve dvou sm\u011brech – stla\u010den\u00edm dol\u016f (vzduch) a posunem dozadu (barva). Oba sm\u011bry lze kombinovat, \u010d\u00edm\u017e lze dos\u00e1hnout nejr\u016fzn\u011bj\u0161\u00edch pom\u011br\u016f m\u00ed\u0161en\u00ed vzduchu a barvy. To dovoluje i plynul\u00e9 vytv\u00e1\u0159en\u00ed r\u016fzn\u011b tlust\u00fdch a r\u016fzn\u011b pr\u016fhledn\u00fdch \u010dar a ploch bez zastaven\u00ed pohybu ruky. Double-action zaru\u010duj\u00ed maxim\u00e1ln\u00ed kontrolu paprsku barvy vych\u00e1zej\u00edc\u00edho z trysky. Tyto retu\u0161e jsou nejroz\u0161\u00ed\u0159en\u011bj\u0161\u00ed, velmi p\u0159esn\u00e9 a pod\u00e1vaj\u00ed perfektn\u00ed v\u00fdsledky. Jsou vybaveny v\u011bt\u0161inou velmi malou tryskou (0,3mm, 0,2mm a vz\u00e1cn\u011b i 0,15mm), proto se v\u011bt\u0161inou mus\u00ed pou\u017e\u00edvan\u00e1 barva dostate\u010dn\u011b na\u0159edit. Jejich ovl\u00e1d\u00e1n\u00ed vy\u017eaduje jistou d\u00e1vku cviku.<\/td>\n<\/tr>\n
\n

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\"pistole_4\" Pro nan\u00e1\u0161en\u00ed barvy na velk\u00e9 plochy nebo pro st\u0159\u00edk\u00e1n\u00ed lakem, z\u00e1v\u011brem nebo fixativem se hod\u00ed velk\u00e9 technick\u00e9 pistole, kter\u00e9 pojmou zna\u010dn\u00fd objem barvy. Maj\u00ed velk\u00e9 trysky (okolo 1-2mm) a paprsek aerosolu lze nastavit do roviny zplo\u0161t\u011bn\u00edm pomoc\u00ed mal\u00fdch vzduchov\u00fdch trysek. Tyto n\u00e1stroje zaru\u010duj\u00ed rovnom\u011brn\u00e9 rozpt\u00fdlen\u00ed aerosol<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Konstrukce americk\u00e9 retu\u0161e se od dob jej\u00edho vzniku p\u0159\u00edli\u0161 nezm\u011bnila. Samoz\u0159ejm\u011b se v\u00fdrobci sna\u017e\u00ed st\u00e1le zdokonalovat mechaniku a materi\u00e1l, ze kter\u00e9ho jsou retu\u0161e vyrobeny, ale princip z\u016fst\u00e1v\u00e1 stejn\u00fd. Tvar retu\u0161e je co nejv\u00edce p\u0159izp\u016fsoben podob\u011b pera, aby bylo doc\u00edleno co nejp\u0159irozen\u011bj\u0161\u00edho dr\u017een\u00ed n\u00e1stroje. Stla\u010den\u00fd vzduch p\u0159ich\u00e1z\u00ed pru\u017enou hadic\u00ed, kter\u00e1 je napojena na konektor pistole. Proud […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":210,"menu_order":0,"comment_status":"closed","ping_status":"open","template":"","meta":{"ngg_post_thumbnail":0},"_links":{"self":[{"href":"https:\/\/darkart.cz\/index.php?rest_route=\/wp\/v2\/pages\/284"}],"collection":[{"href":"https:\/\/darkart.cz\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/darkart.cz\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/darkart.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/darkart.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=284"}],"version-history":[{"count":0,"href":"https:\/\/darkart.cz\/index.php?rest_route=\/wp\/v2\/pages\/284\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/darkart.cz\/index.php?rest_route=\/wp\/v2\/pages\/210"}],"wp:attachment":[{"href":"https:\/\/darkart.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}