Mkulu pafupipafupi kuwotcherera

Mkulu pafupipafupi kuwotcherera Machine Mlengi / RF PVC kuwotcherera makina kwa kuwotcherera pulasitiki, etc.

Mkulu pafupipafupi kuwotcherera, Wodziwika kuti Radio Frequency (RF) kapena ma dielectric welding, ndikumaphatikizira zida palimodzi pogwiritsa ntchito mphamvu zama wayilesi m'deralo. Chotulukacho chimakhala cholimba ngati zida zoyambirira. HF kuwotcherera amadalira ena katundu wa zinthu kuti welded kuchititsa m'badwo wa kutentha m'munda mofulumira alternating magetsi. Izi zikutanthauza kuti ndi zinthu zina zokha zomwe zimatha kuphatikizidwa pogwiritsa ntchito njirayi. Njirayi imaphatikizapo kuyika zigawozo kuti zizilumikizidwa pafupipafupi (nthawi zambiri pamagetsi a 27.12MHz), omwe amagwiritsidwa ntchito pakati pazitsulo ziwiri. Zitsulozi zimagwiranso ntchito ngati zowonjezera pakatenthedwe komanso pozizira. Mphamvu yamagetsi yamagetsi imapangitsa kuti mamolekyulu a polar thermoplastics asinthe. Kutengera mawonekedwe a geometry ndi dipole, mamolekyuluwa amatha kutanthauzira mayendedwe ena osunthirawo kukhala mphamvu yamafuta ndikupangitsa kutentha kwa zinthuzo. Muyeso wa kulumikizanaku ndi chinthu chotayika, chomwe chimadalira kutentha komanso pafupipafupi.

Polyvinylchloride (PVC) ndi ma polyurethanes ndiwo ma thermoplastics ofala kwambiri omwe amawotcheredwa ndi njira ya RF. N'zotheka kupangira ma polima ena kuphatikiza nayiloni, PET, PET-G, A-PET, EVA ndi ma resin ena a ABS, koma zinthu zofunikira ndizofunikira, mwachitsanzo nayiloni ndi PET ndizothekera ngati mipiringidzo yokonzedweratu imagwiritsidwa ntchito kuphatikiza pa Mphamvu ya RF.

HF kuwotcherera zambiri si oyenera PTFE, polycarbonate, polystyrene, polyethylene kapena polypropylene. Komabe, chifukwa cha zoletsa zomwe zikubwera pakugwiritsa ntchito PVC, polyolefin yapangidwa mwapadera yomwe imatha kukhala ndi HF welded.

Ntchito yaikulu ya HF kuwotcherera ndi kupanga olowa mu makulidwe awiri kapena kuposa zakuthupi. Pali zinthu zingapo zomwe mungasankhe. Chida chowotcherera chitha kujambulidwa kapena kusindikizidwa kuti chiwonetsere malo okongoletsa onse kapena chitha kuphatikizira njira yopangira zilembo, ma logo kapena zokongoletsa pazinthu zotsekemera. Pogwiritsa ntchito kudula kotsalira moyandikana ndi malo owotcherera, njirayi imatha kuwotcherera nthawi imodzi ndikudula chinthu. Kudulira kumapanikiza pulasitiki wotentha mokwanira kuti zovulaza zidutsidwe, chifukwa chake izi zimatchedwa kuwotcherera.makina othamanga kwambiri

Wowotcherera pulasitiki wamba amakhala ndi jenereta yamagetsi (yomwe imapanga ma wayilesi pafupipafupi), makina osindikizira a pneumatic, ma elekitirodi omwe amasinthitsa pafupipafupi wailesi kuzinthu zomwe zikuwotcheredwa ndi benchi yowotcherera yomwe imagwirizira zinthuzo. Makinawo amathanso kukhala ndi bala yolowera yomwe nthawi zambiri imakwera kuseri kwa ma elekitirodi, omwe amatsogolera kubwerera kwamakina (poyikira). Pali mitundu yosiyanasiyana yama welders apulasitiki, makina ofala kwambiri ndimatayala, makina opakira ndi makina oyenda.

Poyang'anira kukonza kwa makinawo, mphamvu zakumunda zimatha kusintha zinthu zomwe zidawotcheredwa. Mukamawotcherera, makinawo amakhala mozungulira mozungulira pafupipafupi pomwe, ngati ndi yolimba kwambiri, imatha kutentha thupi pang'ono. Izi ndi zomwe woyendetsa ayenera kutetezedwa. Mphamvu yamunda wamafupipafupi wailesi imadaliranso mtundu wa makina omwe akugwiritsidwa ntchito. Nthawi zambiri, makina okhala ndi ma elekitirodi otseguka owoneka (osadulidwa) amakhala ndi minda yamphamvu kuposa makina okhala ndi maelekitirodi otsekedwa.

Pofotokozera zamagetsi zamagetsi zamagetsi zamagetsi, pafupipafupi m'mundamu mumatchulidwa. Mafupipafupi omwe amaloledwa opangira pulasitiki ndi 13.56, 27.12, kapena 40.68 megahertz (MHz). Mafilimu otchuka kwambiri a HF kuwotcherera ndi 27.12MHz.

Masamba afupipafupi a wailesi ochokera kwa wowotcherera pulasitiki amafalikira mozungulira makinawo, koma nthawi zambiri amangokhala pafupi ndi makinawo kuti mundawo ndi wolimba kwambiri kotero kuti ayenera kutetezedwa. Mphamvu zakumunda zimachepa kwambiri ndikutalikirana ndi komweko. Mphamvu yamunda imaperekedwa m'miyeso iwiri yosiyana: mphamvu yamagetsi yamagetsi imayesedwa mu volts pa mita (V / m), ndipo mphamvu yamaginito imayesedwa mu amperes pa mita (A / m). Zonsezi ziyenera kuyezedwa kuti mudziwe momwe mphamvu yamagetsi yamagetsi ilili yolimba. Zamakono zomwe zimadutsa mwa inu ngati mutakhudza zida (zamalumikizidwe pano) komanso zomwe zimadutsa mthupi mukamayendetsa (zoyeserera pano) ziyeneranso kuyezedwa.

Ubwino wa High Frequency kuwotcherera Technology

  • Kusindikiza kwa HF kumachitika kuchokera mkati ndikudzigwiritsa ntchito ngati chowotcha. Kutentha kumayang'ana pa chandamale chowotchera kuti zinthu zomwe zikuzungulira siziyenera kutenthedwa kwambiri kuti zifike pamlingo wotentha palimodzi.
  • ndi Kutentha kwa HF imapangidwa pokhapokha munda utapatsidwa mphamvu. Makina a jenereta akangotha, kutentha kumazimitsidwa. Izi zimapatsa mwayi wowongolera kuchuluka kwa mphamvu zomwe zakuthupi zimawona pazakuzungulira konseko. Kuphatikiza apo, kutentha komwe kumapangidwa ndi HF sikumatulutsa imfayo ngati kufa kwamoto. Izi zimalepheretsa kutentha kwa zinthu zomwe zikugwira waya.
  • HF tooling nthawi zambiri kuthamanga "ozizira". Izi zikutanthauza kuti HF ikazimitsidwa, zinthuzo zimasiya kuyaka moto, koma zimapanikizika. Mwanjira imeneyi ndizotheka kutentha nthawi zonse, kuwotcherera, ndikuziziritsa zomwe zikukakamizidwa. Kulamulira pazowonjezera kumawongolera zambiri pazomwe zimapangitsa extrusion, motero kukulitsa mphamvu ya weld.
  • Ma welds a RF ndi "oyera" chifukwa chokhacho chomwe chimafunikira kutulutsa HF weld ndichinthu chomwecho. Palibe zomatira kapena zopangidwa kuchokera ku HF

mfundo yowotchera pafupipafupi