Lokacin da aka haɗa PCB, layin rarraba V-dimbin yawa tsakanin veneers biyu da tsakanin veneer da gefen tsari yana samar da siffar "V"; an karye a raba bayan walda, don haka ake kiransaV-yanke.

Manufar V-cut:

Babban manufar zayyana V-cut shine don sauƙaƙe ma'aikaci don raba allon bayan an haɗa allon kewayawa. Lokacin da aka raba PCBA, V-Cut Scoring machine (na'ura mai ci) ana amfani da shi gabaɗaya don yanke PCB a gaba. Nufi da zagaye na Buga Maki, sa'an nan kuma tura shi da ƙarfi. Wasu injina suna da ƙirar ciyarwar allo ta atomatik. Muddin an danna maɓalli, ruwan wuka zai motsa ta atomatik kuma ya haye matsayin V-Cut na allon kewayawa don yanke allo. Ana iya daidaita tsayin ruwan sama ko ƙasa don dacewa da kauri na V-Cuts daban-daban.

Tunatarwa: Baya ga yin amfani da makin V-Cut, akwai wasu hanyoyi don ƙananan allon PCBA, kamar Roting, ramukan tambari, da sauransu.

Kodayake V-Cut yana ba mu damar raba allon sauƙi da cire gefen allon, V-Cut kuma yana da iyakancewa a cikin ƙira da amfani.

1. V-Cut ba zai iya yanke madaidaiciyar layi ba, kuma wuka ɗaya zuwa ƙarshe, wato, V-Cut kawai za a iya yanke shi zuwa madaidaiciyar layi tun daga farko zuwa ƙarshe, ba zai iya juyawa ya canza alkibla ba. kuma ba za a iya yanke shi cikin ƙaramin yanki kamar layin tela ba. Tsallake ɗan gajeren sakin layi.

2. Kauri daga cikin PCB ya yi bakin ciki sosai kuma bai dace da V-Cut grooves ba. Gabaɗaya, idan kauri na allon bai wuce 1.0mm ba, V-Cut ba a ba da shawarar ba. Wannan saboda V-Cut grooves zai lalata ƙarfin tsarin PCB na asali. , Lokacin da akwai ƙananan sassa masu nauyi da aka sanya a kan jirgi tare da zane na V-Cut, allon zai zama sauƙi don lanƙwasa saboda dangantaka da nauyi, wanda ba shi da kyau ga aikin walda na SMT (yana da sauƙi don haifar da walƙiya mara kyau ko). gajeren zango).

3. Lokacin da PCB ya wuce ta cikin babban zafin jiki na reflow tanda, hukumar kanta za ta yi laushi da kuma lalacewa saboda babban zafin jiki ya wuce gilashin canji zafin jiki (Tg). Idan ba a tsara matsayi na V-Cut da zurfin tsagi da kyau ba, nakasar PCB zai fi tsanani. bai dace da tsarin sake kwarara na biyu ba.