Pib ua haujlwm me me - lub hnab ntim khoom lag luam yog qhov txawv ntawm kev xaiv lub peev xwm loj. Kev nqis peev uas yuav tsum tau muaj tsawg. Tsawg yields. Muaj kev cia siab rau kev ua haujlwm nyuaj. Tab sis rau kev lag luam me, xaiv lub tshuab tsis zoo tuaj yeem muaj kev cuam tshuam loj dua. Cov nyiaj tau nruj thiab kev tawm tsam ncaj qha cuam tshuam rau cov neeg siv khoom xaj. Xaiv txoj cai T- lub tsho tsim rau kev ua haujlwm me me yuav tsum muaj qhov pom tseeb ntawm rau lub ntsiab lus: kev tsim khoom, kev tsim kho tshuab, cov khoom siv sib xws, qhov chaw thiab lub zog, kev txhawb nqa tom qab, thiab tag nrho cov nqi. Daim ntawv no yuav qhia los ntawm qhov pom ntawm kev xyaum.
Kauj Ruam 1: Txiav txim siab koj qhov yuav tsum tau ntim khoom tiag tiag
Ib qho kev ua yuam kev loj tshaj plaws uas cov tswv lag luam me ua yog kom overestimate lub peev xwm lawv xav tau. Qhov no ua rau lawv mus yuav lub tshuab uas kim dhau thiab nyuaj kom tau raws li lawv qhov xav tau tiag tiag.
Qhov chaw zoo pib: Ua haujlwm tawm koj lub hnab niaj hnub xav tau raws li kev lees paub lossis ua tib zoo kwv yees kev txiav txim. Tsis txhob siv cov hom phiaj muag khoom koj xav ua kom tiav. Tom qab ntawd ntxiv ib qho kev siv.
Cov me me T-lub hnab ntim khoom feem ntau tsim 40-120 hnab ib feeb. Nws nyob ntawm qhov loj ntawm lub hnab thiab tsim ntawm lub tshuab. Yog tias koj ua haujlwm ua haujlwm ntawm 60 sacks ib feeb (8 teev), nrog kev ua haujlwm 75%%, koj yuav tau txais:
60bags/min × 60 mins x 8 teev x 0.75=21,600bags per shift
Yog tias koj lub peev xwm tam sim no yog 15,000-25,000 lub hnab ib hnub, lub tshuab me me tuaj yeem npog koj. Koj muaj chaw loj hlob. Yog tias koj lub hom phiaj los ntawm qhov pib yog 100,000 hnab ib hnub, ces cov tshuab me me - tsis tsim nyog. Koj yuav xav tau ob peb lub tshuab lossis kab nruab nrab.
Cov lej raug tuaj yeem tiv thaiv koj los ntawm kev yuav tsawg dhau (cov tshuab tam sim ntawd dhau los ua cov fwj) thiab yuav ntau dhau (lub peev xwm kim zaum tsis ua haujlwm thiab nkim nyiaj).
Kauj Ruam 2: Nkag siab txog Core Mechanical Configuration
Cov T-Tshooj Lub Hnab Ua Tshuabib tug U-zoo li tus los yog V-zoo li tus seam rau lub hnab thiab handstand, txiav lub hnab mus rau ib tug ntev thiab molding ib nrab- hli tuav qhib. Rau kev ua haujlwm me me, nkag siab tias cov kauj ruam no ua haujlwm li cas hauv lub tshuab tuaj yeem pab koj tshawb xyuas qhov zoo, kev ntseeg siab, thiab kev ua haujlwm yooj yim.
Sealing System
T- lub hnab tsho yog ua los ntawm high- polyethylene zaj duab xis ntom ntom. Qhov no yuav tsum tau sealing kub ntawm 140 thiab 200 degrees Celsius. Cov tshuab me me raug kaw hauv ib qho ntawm ob txoj hauv kev:
Kub-hlau sealing:kub hlau foob thiab txiav zaj duab xis tib lub sijhawm. Lub system yog mechanically yooj yim. Nws raug nqi tsawg dua. Qhov no tshwm sim hauv cov tshuab me me - nplai. Qhov txwv yog qhov loj ntawm qhov kub ntawd - hlau sealing txwv lub hnab ntim ntau yam. Nws kuj txwv qhov zoo ntawm siab -kawg seals. Nws ua haujlwm zoo heev nrog cov khw muag khoom noj khoom haus yooj yim.
Heated sealing bar nrog cais cov hniav:Ua kom lub foob zoo ruaj khov. Nws siv rau ntau yam ntawm cov yeeb yaj kiab thicknesses. Cov chaw zoo li no tuaj yeem pom hauv cov tshuab me me zoo dua - nplai. Yog tias tus neeg siv khoom muaj cov kev cai tshwj xeeb sealing, ces tus nqi ntxiv yog tsim nyog.
Nug lub tshuab muag khoom rau cov ntaub ntawv foob lub zog (N / 15mm dav) rau cov phiaj xwm txheej tuab.
Tuag-Cutting Unit
Kov punch yog ib qho ntawm cov khoom tsim tau yooj yim tshaj plaws hauv kev ua haujlwm me me. Tshawb xyuas cov hauv qab no:
stroke tus nqi (yuav tsum nyob rau hauv txoj kab nrog los yog sai dua lub tshuab sealing voj voog tus nqi)
- Cov khoom siv tuag thiab xuas nrig ntaus (yuav tsum yog yam tsawg kawg ntawm cov cuab yeej nyuaj; Rockwell hardness tooj yuav tsum tau)
- Nws yooj yim npaum li cas los hloov pwm (sib txawv punch pwm yog xav tau rau cov hnab sib txawv -nws siv sijhawm ntev npaum li cas los hloov pwm?)
- Tus nab npawb l Spare pwm thiab txhuas lub sij hawm muab los ntawm cov neeg muag khoom
Ib lub tsho hnav lossis tsis zoo yog qhov tseem ceeb ntawm kev tsim kua muag ntawm T- lub hnab tsho. Rau kev ua haujlwm me me uas tsis muaj kev saib xyuas pab pawg, ib qho yooj yim, muaj zog punch tsim nrog yooj yim nkag mus rau thaub qab pwm yog qhov zoo dua li cov punch ceev, meej uas yuav tsum muaj cov kev pabcuam ntawm cov kws tshaj lij.
Kauj Ruam 3: Paub meej tias cov khoom sib raug zoo nrog koj qhov chaw ua yeeb yaj kiab
Ua ntej koj yuav lub tshuab, xyuas cov hauv qab no:
Nyias zaj duab xis dav ntau yam:Feem ntau T-lub hnab ntim khoom siv yog tsim los ntawm cov yeeb yaj kiab tubular nrog qhov dav ntawm 300-700mm ca. Tshawb xyuas lub tshuab qhov me me thiab qhov dav dav ntawm zaj duab xis kom phim qhov loj ntawm koj lub hnab.
THickness ntau yam:12 - 25 microns rau Standard HDPE T- lub hnab tsho. Tshawb xyuas lub tshuab los cuam tshuam nrog lub hom phiaj thickness, nyias qhov kawg foob tsis zoo, qhov tuab kawg nyob twj ywm ntev heev.
Gusset chaw nyob:T- lub hnab tsho xav tau ua ntej-gusseted tubular zaj duab xis. Tshawb xyuas lub tshuab txoj hauv kev kom pom tias zaj duab xis gusseted tob txaus rau koj lub hnab ntim.
Cov kev hloov hauv cov roj zaj duab xis kuj:Nug lub tshuab ntau npaum li cas zaj duab xis thickness (± X microns) thiab yaj index lub foob system tuaj yeem tiv taus yam tsis hloov qhov chaw. Rau kev ua haujlwm me me yuav los ntawm ntau tus neeg xa khoom ua yeeb yaj kiab, kev kam rau hloov pauv yog qhov tseem ceeb tshaj qhov ua tau zoo ntawm cov yeeb yaj kiab zoo meej.
Kauj Ruam 4: Ntsuas lub cev taw qhia thiab cov kev xav tau siv hluav taws xob
Cov chaw tsim khoom me me- nplais loj-txawm yog hloov chaw ua haujlwm, chaw ua haujlwm sib koom lossis chaw ua haujlwm me me- feem ntau muaj kev txwv tiag tiag ntawm lub tsev loj thiab hluav taws xob. Me T-shirt baggers feem ntau muaj cov yam ntxwv hauv qab no:
- Hneev taw: 250m x 1.5mx 4m x 2m (nyob ntawm tus ntaus ntawv)
- Qhov siab: 1.4m txog 2.0m
- Fais fab mov: 3-7.5 kW, ib zaug lossis peb -theem, nyob ntawm lub tshuab.
Cov ntsiab lus siv qhov chaw:
- Lub tshuab no xav tau qhov chaw ua haujlwm meej ntawm qhov kawg ntawm cov yeeb yaj kiab pub (rau kev thauj khoom yob) thiab qhov kawg ntawm lub hnab tawm (rau kev sib sau los yog bundling)
- Hauv kev xam cov kev cai hauv pem teb, ntxiv qhov kev tshem tawm ntawm 1-1.5m ntawm ob qho kawg
- Cov tshuab me hnyav nruab nrab ntawm 400kg thiab 1200kg- xyuas seb koj lub hauv pem teb tuaj yeem tuav qhov hnyav
Fais fab mov: Hauv ntau qhov chaw me me, qhov muaj nyob ntawm ib zaug -theem fais fab txwv koj lub tshuab xaiv. Ua ntej koj yuav, xyuas tias lub tshuab xav tau peb lub-theem fais fab mov. Nws yuav siv nyiaj thiab sijhawm ntxiv peb theem rau koj qhov chaw.
Kauj Ruam 5: Ntsuam xyuas Tom qab- Kev Pabcuam Muag Khoom Zoo
Qhov zoo tshaj plaws no feem ntau saib xyuas los ntawm cov neeg yuav khoom hauv tsev me, uas tsom mus rau cov nqi yuav khoom. Tab sis cov neeg nqa khoom uas tau muaj teeb meem hais tias yog qhov tseem ceeb tshaj plaws.
T-Tsho Lub Hnab Ua Tshuab ntawm kev hloov pauv txhua hnub yuav tsum tau:
- Tsis tu ncua hloov cov hlua khi los yog cov ntsaws ruaj ruaj (feem ntau txhua 2-6 lub hlis, nyob ntawm cov khoom siv thiab cov khoom siv rov ua dua tshiab)
- Periodic hloov tuag txiav punch thiab tuag (nyob ntawm lub voj voog suav; lub neej expectancy raws li punch suav)
- Ua tsis tu ncua kev tshuaj xyuas ntawm txoj siv sia thiab kis tau tus mob
- Qee zaus PLC lossis sensor teeb meem kuaj xyuas
Rau ib lub tuam txhab me me uas tsis muaj kev tsim vaj tsev sab hauv, cov lus nug tom qab kev txhawb nqa yog:
Muaj cov khoom seem:Puas yog cov khoom siv tau txais txiaj ntsig (cov xov hlau sib khi, cov ntawv txiav, xuas nrig ntaus) hauv cov khoom lag luam hauv zos? Los yog yuav tsum tau xaj los ntawm lwm lub tebchaws nrog lub sijhawm xa khoom ntawm plaub mus rau yim lub lis piam? Kev tso tseg cov tshuab uas tos peb lub lis piam rau lub kaw lus yog lub tswv yim phem, txawm tias nws pheej yig npaum li cas.
Kev kuaj mob nyob deb:Ntau lub tshuab tshiab tshiab muaj PLC kev sib txuas rau kev nrhiav qhov chaw deb. Rau ib pab pawg me uas tsis muaj cov neeg ua haujlwm saib xyuas tshwj xeeb, qhov no tuaj yeem txhais tau tias daws teeb meem hluav taws xob hauv cov sij hawm ntau dua li hnub.
Kev cob qhia:Kev yuav khoom puas suav nrog kev cob qhia ua haujlwm? Hom ntawv twg (nyob, yees duab, phau ntawv)? Kev ua haujlwm me me xav kom tus neeg teb xov tooj tuaj yeem kho qhov chaw kom raug. Lawv xav tau ntau tshaj qhov pib thiab nres.
Cov ntsiab lus Warranty:Paub dab tsi yog thiab tsis lav. Nkag siab txog cov txheej txheem them nyiaj lav. Qhov no yog qhov tseem ceeb tshwj xeeb rau cov tshuab txawv teb chaws. Nws tuaj yeem siv sijhawm ntau lub lis piam txhawm rau xa cov khoom puas rov qab los kuaj xyuas.
Kauj Ruam 6: Xam tag nrho cov nqi ntawm cov tswv, tsis yog tus nqi yuav khoom xwb
Tus nqi yuav khoom tsuas yog ib feem ntawm tus nqi tseeb ntawm kev khiav T- lub hnab ntim khoom thoob plaws hauv nws lub neej. Tus qauv tsim nqi ntau dua suav nrog cov hauv qab no:
|
Cov khoom siv kos duab |
Tej yam me me -Scale Range |
Sau ntawv |
|
Tus nqi yuav khoom |
USD 8,000–35,000 |
Ntau yam ntawm configuration thiab keeb kwm |
|
Shipping thiab import lub luag haujlwm |
5-15% ntawm cov nqi tshuab |
Nws txawv raws lub teb chaws |
|
Installation thiab commissioning |
USD 500–3,000 |
Ntawm -kev txhawb nqa kev kawm |
|
Kev cob qhia tus neeg ua haujlwm |
USD 0–2,000 |
Feem ntau suav nrog; paub meej |
|
Consumable Parts (ib xyoos) |
USD 800–3,000 |
Sealing hlau, punches, siv |
|
Tus nqi zog (txhua xyoo) |
USD 500–2,500 |
Nyob ntawm tus nqi hluav taws xob hauv zos thiab cov qauv hloov |
|
Kev saib xyuas kev ua haujlwm |
Hloov pauv |
Internal vs. external technician nqi |
|
Tus nqi qis |
Hloov pauv |
Feem ntau underestimated yam |
Yog tias lub tshuab raug nqi tsawg dua $ 5,000 ib xyoos los ua, tab sis raug nqi $ 2,000 ntau dua, thiab tawg ob zaug ntau zaus, nws tuaj yeem ua rau koj lub hnab nyiaj ntau dua hauv peb xyoos. Cov neeg yuav khoom me me tsis tshua ua qhov kev suav ua ntej lawv yuav.
Nug cov ntaub ntawv ntawm qhov tseem ceeb ntawm qhov tsis ua hauj lwm ncua sij hawm (MTBF) thiab cov sij hawm siv tau nruab nrab. Cov neeg muag khoom zoo muaj cov ntaub ntawv ntawd thiab muab rau koj.
Matching Machine Class to Operation Scale: A Quick Reference
|
Kev Ua Haujlwm Loj |
Txhua hnub ntim (bags) |
Pom zoo tshuab Class |
Ceev Range |
|
Micro / pib |
Txog li 15,000 |
Nkag mus -theem ib zaug-theem |
40-70 hnab / min |
|
Me -scale |
15,000–50,000 |
Nruab nrab- nkag servo lossis cam- tsav |
60-120 hnab / min |
|
Me - nruab nrab |
50,000–150,000 |
Semi- tsis siv neeg nrog servo tsav |
100-160 hnab / min |
|
Nruab nrab thiab siab dua |
150,000+ |
Tsis siv neeg siab - kab nrawm |
160–{1}} hnab/min |
Rau kev ua haujlwm me me tiag tiag (txog 50,000 hnab / hnub), nkag mus - qib thiab nkag - qib hom muaj kev sib xyaw ua ke zoo tshaj plaws ntawm tus nqi, kev siv yooj yim thiab cov khoom tsim nyog. Kev yuav lub tshuab ceev ceev, tag nrho automated nrog 20% muaj peev xwm yog ib qho nyiaj pov tseg. Nws ntxiv complexity uas koj tsis xav tau.
Cov chij liab kom zam thaum ntsuas cov khoom siv
- Tsis muaj qhov tshwj xeeb: txhua lub tshuab zoo yuav tsum muaj cov ntawv qhia ntxaws ntxaws. Qhov no yuav tsum muaj xws li sealing kub ntau, ncig ceev, zaj duab xis thickness ntau, lub zog yuav tsum tau thiab qhov hnyav. Yog cov ntaub ntawv ploj lawm, ceeb toom.
- Tsis muaj kev sim ntau lawm: Cov neeg muag khoom tiag tiag yuav tsum txaus siab sim koj zaj duab xis ua ntej koj yuav nws. Tsis txhob ua haujlwm nrog ib tus neeg muag khoom uas tsis tuaj yeem lossis yuav tsis tso lub tshuab nrog koj cov khoom siv tiag tiag.
- Lub sijhawm khoom xa tuaj tsis meej: yog tias tus neeg muag khoom tsis tuaj yeem muab cov lus teb meej rau koj ntawm lub sijhawm xa khoom, kaw cov kab lossis xuas nrig ntaus tuag, cia siab tias qhov phem tshaj.
Tsis muaj kev teeb tsa hauv zos lossis teeb tsa kev txhawb nqa: Cov tshuab xa tawm yam tsis muaj kev txhawb nqa kev teeb tsa txhua qhov teeb meem rau koj.
Cov ntsiab lus
Xaiv ib pawg me me T-Tshooj Lub Hnab Ua Tshuab yog tiag tiag txog kev xaiv cov cuab yeej tsim nyog rau koj raws li koj xav tau tiag tiag. Tsis txhob yuav ib yam dab tsi nyuaj heev. Tsis txhob yuav kev ntseeg tsawg dhau. Txiav txim siab rau cov kauj ruam uas yog: Txiav txim siab koj cov kev xav tau tiag tiag, nkag siab txog lub tshuab teeb tsa uas haum rau koj cov yeeb yaj kiab thiab pob khoom tshwj xeeb, xyuas cov khoom siv sib xws, xyuas kom lub tshuab haum rau koj qhov chaw, nug cov lus nug nyuaj txog kev txhawb nqa tom qab muag, thiab saib tag nrho tus nqi ntawm tus tswv lub tshuab- tsis yog tus nqi yuav khoom xwb.
Cov neeg yuav khoom me me uas ua raws li cov kauj ruam no tuaj yeem zam ob qho kev ua yuam kev ntau tshaj plaws. Ib qho yog mus yuav lub tshuab pheej yig uas xav tau kev kho tas li thiab ua cov hnab shoddy. Lwm qhov yog yuav cov tshuab uas loj dhau rau cov lag luam them taus.
Cov ntaub ntawv:
- Rosato, DV & Rosato, MG – Plastics Technology Handbook, 4th Edition, CRC Xovxwm, 2006
- Hensen, F. – Yas Extrusion Technology, Hanser Publishers, 1997
- Glanvill, AB – Plastics Engineer's Data Book, Mechanical Engineering Publications, 1993
- Soroka, W. – Fundamentals of Packaging Technology, 4th Edition, Institute of Packaging Professionals (IoPP), 2009
- ASTM D882-18 - Txuj kev xeem rau Tensile Properties ntawm nyias yas Sheeting, ASTM International
- ISO 4591: 1992 - Plastics - Zaj duab xis thiab Sheeting - Kev txiav txim siab ntawm Qhov Nruab Nrab Thickness, Lub Koom Haum Thoob Ntiaj Teb rau Kev Tsim Qauv
