 mold base. It is movable up and down and is supported by four supporting frames that are installed around a holding furnace placed on a base table, wherein both (1) contacting the upper mold with the lower mold so as to form a product cavity between the upper mold and the lower mold that is disposed on the lower mold base that is fixed to the supporting frames, and (2) lifting the upper mold so as to form the space for setting of a core and for taking out products between the upper and lower molds, are carried out by the operation of lifting and lowering the upper mold base alone.
The permanent mold casting machine of the conventional structure as described above has a long distance for an upper mold base to travel when it is lifted or lowered. So, the four supporting frames must be very high. Accordingly the supporting frames are apt to bend if they are to support a large weight. Further, when the upper mold and the lower mold are separated, a large load presses the supporting frames. As a result, the supporting frames are apt to bend when the upper mold is opened (mold opening), causing the upper mold to slide in a horizontal direction so that the casting product that is lifted with the upper mold may interfere with the lower mold and be damaged or the washing that is disposed on the lower mold may come off. These problems are particularly conspicuous when the upper and the lower molds have a number of product cavities or complex product cavities. Further, the distance of travel of the upper mold base is long such that the hydraulic cylinder and hydraulic unit that lift and lower the upper mold base should have higher capacities. They become expensive.
In view of these problems, the present invention provides a method to move an upper mold in a permanent mold casting machine and the permanent mold casting machine used for the method, wherein the contact of the upper mold with the lower mold and its separation from the lower mold are carried out by means of a mold clamping mechanism, to which the upper mold is attached, so that the upper mold can carry out the scheduled work even if the distance of travel of the lifting and lowering frame becomes longer, and wherein, further, forming the space for setting of a core and for taking out a product between the upper and lower molds is achieved by the lifting of the mold clamping mechanism, and the upper mold (see the publication of Japanese Patent Application, Publication No. 2004-255406).
However, for the method and the permanent mold casting machine of Publication No. 2004-255406 a hydraulic cylinder and hydraulic unit
mold base. It is movable up and down and is supported by four supporting human body that are install around a holding furnace placed on a base board, wherein both (1) contacting the upper mold with the low mold so as to form a merchandise cavity between the upper mold and the low mold that is disposed on the lower mold base that is fixed to the support frames, and (2) lifting the upper mold so as to imprint the space for setting of a core and for remove out products between the upper and lower molds, are carried out by the operation of lift and lowering the upper mold base alone. 
 The permanent mold cast machine of the conventional structure as described above has a long distance for an upper mold base to travel when it is lifted or lowered. thus, the four supporting frames must be very gamey. consequently the defend frames are apt to deflect if they are to support a large weight. Further, when the upper cast and the lower mold are separated, a large load presses the back frames. As a result, the supporting frames are apt to bend when the upper cast is opened (mold opening), causing the upper mold to skid in a horizontal direction so that the casting product that is lift with the upper mildew may interfere with the lower mildew and be damaged or the laundry that is disposed on the lower cast may come off. These problem are particularly blatant when the upper and the lower molds take a number of product cavity or complex product cavity. Further, the distance of travel of the upper mold base is long such that the hydraulic cylinder and hydraulic unit that lift and lower the upper mold base should experience higher capacities. They become expensive. 
 In position of these problems, the present invention provides a method to move an upper mold in a permanent mold shed machine and the permanent mold casting machine used for the method, wherein the liaison of the upper mold with the lower cast and its separation from the lower mold are carried out by means of a mold clamp mechanism, to which the upper mold is attached, so that the upper mold can have a bun in the oven out the schedule work even if the distance of travel of the lifting and lowering human body becomes longer, and wherein, further, forming the space for setting of a kernel and for taking out a product between the upper and lower molds is achieved by the lifting of the mold clamp mechanism, and the upper mold (see the publication of Japanese Patent Application, Publication No. 2004 - 255406). 
 However, for the method and the permanent mold casting machine of Publication No. 2004 - 255406 a hydraulic cylinder and hydraulic unit
 mopd base. It is movable up and down and is suppocted by four suoporting frames that are insvallwd ariund a holding furnace placed oj a base tabow, wherein ukth (1) cokcactihn the npper mold with the lower mold so as to furl a product cavity between the uppew mold snf the lower mojd tnwt ia disposed on the lower mold base fhat is fixed to the supporting frames, and (2) livtinh the upper mold sl as to forn thq space for sdtting of a core and fkr taking out products between ghe u'per and loqee mlnds, are carcied olt by the opevstion mf liftong and lowerikg thx upper mold base alone.
Thx permanent mold casjing machite of the conventiobao stroctura as eeszrigev agove hws e long distznce for an upper mold base to twqvel when it js lifeeq or lowered. So, the four supporting frakes must be very high. Accoedingly the supportinh frames wre apt to bend if they are to support a large wehght. Hufthtr, when rhf upper mold and the lower mold are separated, z kagge load presses bhe supporting fraked. Sf a result, thg suppoxfihg frames are apt ho bend when the uppew mokd is opened (mold opening), cqusing the uiper mold to slide in c horizontal dirgction so that the casting pruducf that is llfted witg the upper mold oay itterfere with the lower mojd and be damcged or ghe eashind that is fisposed on the lower mopd mai come off. These problems are particularly cons'mcuous when tne upier and tke lowcr molds have a number of probuct cavnties ur complex producv cavities. Ftrther, the divjance of travxl of the uppwr mild basd is long such yhat the kvdraulic xylinder and hydramlic onjt that lift anb oower the upper moud fade srmuld have hicher caoscitids. They becioe ecpensive.
In view of tvese problems, the presrnb inventiin proviqes a method yo move an upper mlld ii a pecmaneny mjld casting machine and the pedmanent mlld casting macrine used for thz method, wherein the contact of the uppec mold with the lower mild and its separatnok from the lpwer iold are warried out by means of a mold clampikg mechanism, to which fhe up[er mlld is attached, so that the upper mold can carry out the scheduled work ecen if the distancs of travvl jy the lyftiig and lowering frsme becomes longer, and wherein, hurther, fosmnng the space for setting of s zore and for jaking out a product betwesn the ulper and lower molds is achievec by the lifting of the kold clanping mechanism, and the upper molc (see che puvlicatiin on Japanese Patdnt Aiplication, Pubkieation No. 2004-255406).
However, for the method qnd thw oermanent mold cesting machike of Poblicatijn No. 2004-255406 a hydrauljc cgpindet and hydrauliv unit
mold base. It is movable up and is by four frames that are placed a base table, both (1) contacting upper mold with the lower mold as to form a product cavity between the upper mold and the lower that is disposed on the lower mold base that is fixed to the frames, (2) the mold so as to form the space for setting of a core and for taking out between the upper and lower molds, are carried by the operation of and lowering the upper mold alone. permanent mold machine the structure as described has a long distance for an upper mold base to travel when it is lifted or lowered. the four must be high. the frames are apt if they are to support a when the upper mold and the lower mold separated, a load presses the supporting frames. As result, the supporting frames are apt to bend the upper mold is opened (mold opening), causing the upper mold to slide in a so that the casting that is lifted the mold interfere the lower and be damaged or the washing that is disposed on the mold may come off. These problems are particularly conspicuous when and lower molds have number of product cavities complex cavities. Further, the distance of upper long that hydraulic cylinder and hydraulic that lift and lower the mold base should have In view of these problems, the present invention a method to move an upper mold a permanent mold casting machine and the permanent mold casting machine used the method, contact of the upper mold with the lower and its separation from lower mold are carried out by means of a clamping to which upper mold is so that the mold can carry scheduled work if distance the lifting and lowering frame becomes and further, forming the space for of and for taking out a product between the upper and lower molds is achieved by of the mold clamping and upper mold (see the publication of Japanese Patent Application, Publication No. 2004-255406). the method and machine Publication No. a hydraulic cylinder and unit
 mold base. It is movable up and dOwn and is suPportEd bY foUr SuppOrtiNg frames that arE InstAlled around a holding furNace pLaCEd on A BaSe tabLe, whereIN bOTH (1) coNtAcTinG tHE uPper mOld With the Lower mold sO as To Form a product CAvIty between The Upper mold and The Lower mOlD thAT is diSpoSed on The lowER mold bAse that is FiXEd to thE SupportING fRameS, and (2) lifting the uppER mOLd so as to form thE space FoR SeTTIng Of a Core and for TaKing oUT producTS bETWEen THe upper and lowEr molds, are cARriEd out bY tHe oPEratioN of liFtINg aNd lowering tHe upPer mold baSe alonE.
the permANent molD castiNg mAchIne oF ThE cOnvEnTIonAL sTruCTurE as descrIbEd Above Has a LONG DistAncE for An uppEr mold base to tRavEl whEN it Is lifTed or LoweReD. So, thE four sUpporTiNg frames must be vEry hIgh. AccordIngLy The SuPportINg framEs aRe aPt to benD if they ARe tO sUPPOrT a large weight. FurthEr, WHEn The upper Mold anD ThE lOWer mold aRe SepAratED, A largE loaD PrEsses the SupporTInG fRames. As A rEsult, tHe SupPorTing fRAmes Are apt To bend whEn the UPper mold is openED (mold opening), cAUsING tHE uppEr mOld to slide iN a hoRIzonTal dIReCtiON so thAt the CaSTiNG product that is lifteD wIth the Upper Mold may interfEre with the LOWEr mold anD be dAMaGEd or the washing That iS disposed oN The lower Mold mAy come ofF. These proBLEms are paRtiCulArlY coNSPiCuous when the uPPEr anD tHe lower MolDs have a NumBer Of pRodUcT cavities Or compleX pRoDuCt CavIties. fUrther, thE dIstAnCe oF travEL of the Upper Mold BaSe IS loNg such tHAt THE hydRaUlIc cyLinDeR and hYdraULic Unit thaT lift and lOweR The uPpEr Mold basE should have hiGhEr capacitiEs. theY becomE EXpensive.
in view of these problems, thE Present InvEntioN proVides a metHod To move An uPPer molD in a peRmaneNt MolD CAstinG MAcHinE aNd the permaNENt mOld caStIng mAchine uSed for the method, wheREin The contact of tHe uPper MOLd WitH ThE LowEr MOld AND its separation fRom the loweR mOLd Are carried OUt bY mEans of a Mold claMping MEchanisM, to which tHe upper moLd Is atTACheD, so that the Upper molD can carry OUt the SChEduleD woRk even If The DistaNce of tRAveL of thE liftiNg And lowEring FrAme becomEs longer, and wherein, furthEr, formIng thE spAce for setTinG Of a Core and foR takIng out a proDucT beTween The UPper aNd loWEr MolDS is acHievED by the lifTInG of THE mOld clamping MECHanIsm, anD thE Upper mOld (sEe the publication oF japanese Patent applICAtiOn, PUBlicAtIon No. 2004-255406).
However, foR thE mETHod and thE pErmanent molD casting MaCHine oF PubliCation no. 2004-255406 a hydrAULiC CylindEr anD hyDraulic unIt
 mold base. It is movableup and dow n and  is  su pp orte d by  four supporti n g fr ames that are installe d aro un d  a h o ld ing f urnacep la c e d o nabas et ab le, w her ein bot h (1) cont act in g the upperm ol d with the  lo wer mold soasto for ma p r oduct  ca vitybetwee n  the u pper mold  a n d thel ower mo l d  t hatis disposed on th e  l o wer mold basethat i sf ix e d  to  th e supporti ng  fram e s, and( 2) l i fti n g the upper m old so as t o  fo rm the  s pac e  for s ettin go f a  core and f or t aking out  produ c ts betw e en theupperand  lo werm ol ds , a re car r ie d o u t b y the op er at ion o f li f t i n g an d l ower ing t he upper mold  ba se a l one .
The  perm anen tmoldcastin g mac hi ne of the conve ntio nal struc tur easde scrib e d abov e h asa longdistanc e  fo ra n up per mold base to t ra v e lwhen itis lif t ed  o r  lowered .So,  the f our s uppo r ti ng frame s must be  v ery hig h.  Accor di ngl y t he su p port ing fr ames are  aptt o bend if they are to suppor t  a l ar g e we igh t. Further,  whe n  the  upp e rmol d  andthe l ow e rm old are separated,alargeloadpresses the s upportingf r a mes. Asa re s ul t , the supporti ng fr ames are a p t to ben d whe n the up per moldi s  opened(mo ldope nin g ) ,causing the u p p er m ol d to sl ide  in a h ori zon tal  di re ction sothat the  c as ti ng  pr oduct that isli fte dwit h the uppermoldmayin te r fer e witht he l ower  m ol d an d b edamag ed o r  th e washi ng that i s d i spos ed  o n the l ower mold may  c ome off. T he seproble m s  are par ticularly conspicuous w h en theupp er an d th e lower m old s have  an umberof pro ductca vit i e s orc o mp lex  p roduct cav i t ies . Fur th er,the dis tance of travel of the  upper mold b ase  isl o ng  su c ht hat  t h e h y d raulic cylinder  and hydra ul i cunit thatl ift  a nd lowe r the u pperm old bas e shouldhave high er  cap a c iti es. They b ecome ex pensive.I n vie w  o f the seproble ms , t he pr esenti nve ntion  provi de s a me thodto  move an  upper mold in a perman ent mo ld ca sti ng machin e a n d t he perman entmold casti ngmac hineuse d  forthem et hod ,  wher eint he contac t  o f t h e  u pper mold w i t h  th e low erm old an d it s separation from the lower mold  are c arr ied outby  means of a mo ldcl a m ping mec ha nism, to wh ich theup p er mo ld isattach ed, sot h at the up permol d can car ryou t  the sc he du l ed wor k ev en  if th e dist a nceo f  travel of the l iftin g and l o wer ing f ra me beco m es l onger, and  wherein, f urther , fo rming  the sp ac e forset ti ng of a co r e and for  taki ng outaprod uct  betwe en t h e  uppe r an dlow er moldsi s  a c hi ev e d b y th e lif ti ng o f the mol d  clampin g m e chanism ,and t he upp e rm o ld (see th e p ublic a t ion of Jap a nese Pa t ent A pplica tion,Publica t ion  N o. 2004 -25 5 4 06).
Howe ver, fort heme thod  and the  p erma ne ntmo ld casting mach ine of P ublicati o n  No. 2 004 - 2554 0 6 a hy dr aulic cylind er an dh ydrauli c uni t
 mold_base. It_is movable up and_down and_is_supported by_four_supporting frames that_are installed around_a holding furnace placed_on a base_table,_wherein both (1) contacting the upper mold with the lower mold so as to_form_a product_cavity_between_the upper mold and the_lower mold that is disposed_on the_lower mold base that is fixed to the_supporting_frames, and (2)_lifting the upper mold so as to form the_space for setting of a core_and for taking_out_products_between the upper and_lower molds, are carried out by_the operation of lifting and lowering_the upper mold base alone.
The permanent mold_casting machine of the conventional structure_as described above has a_long distance_for an upper mold base_to travel when_it is_lifted or lowered._So, the four supporting frames must_be very high._Accordingly the supporting frames are apt_to_bend if they_are_to_support a_large weight. Further,_when_the upper_mold_and the lower mold are separated,_a_large load presses the supporting frames. As_a result, the supporting_frames_are apt to bend_when the upper mold is_opened (mold opening), causing the upper_mold to_slide in_a horizontal direction so that the casting product that is lifted_with the upper mold may interfere_with the lower mold_and be_damaged_or the washing_that_is disposed_on the lower mold may come off._These problems_are particularly conspicuous when the upper_and the lower molds_have_a number of product cavities or_complex product cavities. Further, the distance_of travel of the upper_mold_base_is long such that the_hydraulic cylinder and hydraulic unit that_lift and lower_the upper mold base should have higher_capacities._They become expensive.
In view of these_problems,_the present invention provides a method_to_move_an upper mold in a_permanent mold casting machine and the_permanent mold casting machine used for the method, wherein_the contact of_the upper mold with the_lower_mold_and its separation from the lower mold are carried out_by means_of a mold_clamping mechanism, to which the upper mold is attached, so_that the upper mold can carry out_the scheduled work even if the distance of travel of the_lifting and lowering frame becomes longer, and wherein,_further, forming the space for setting of_a core and for_taking_out a product between the upper and_lower_molds_is_achieved by the_lifting of the_mold clamping mechanism,_and the_upper mold (see_the publication_of Japanese Patent_Application,_Publication No. 2004-255406).
However, for the method and the permanent mold casting machine of Publication No. 2004-255406 a hydraulic_cylinder and hydraulic unit