The utility model provides a bow shaped fixture for improving the warpage of circuit board, which is fixed on the support frame for supporting circuit board, the top end of the side rod of the support frame on both sides of circuit board is provided with a screw seat, the screw seats on both sides of circuit board are provided with a screw, the two ends of the screw are fixedly connected with the two ends of the bow shaped part, and the curved top end of the bow shaped part is pressed against the warpage part of circuit board. The utility model improves the warping of the circuit board by pressing the bending top of the bow against each warping part of the circuit board, so as to realize the targeted pressure on the serious warping position and point of the circuit board, effectively reduce the warping degree of the circuit board, eliminate the residual stress of the circuit board, and the leveled circuit board is not easy to rebound, so as to improve the yield and delivery efficiency of the circuit board.
【技术实现步骤摘要】
一种改善线路板翘曲的弓形治具
本技术涉及线路板翘曲平整装置
,尤其涉及一种改善线路板翘曲的弓形治具。
技术介绍
在印刷电路板(PrintedCircuitBoard,PCB)自动化插装线上,PCB线路板若不平整,会导致定位不准的问题,元器件无法插装到PCB板的孔和表面贴装焊盘上,甚至会撞坏自动插装机。装上元器件的PCB板焊接后发生弯曲,原件脚很难剪平整齐,PCB板也无法装到机箱货机内的插座上,所以,装配厂遇到线路板板翘的问题同样是十分棘手的。目前,线路板已进入到表面安装和芯片安装的时代,装配厂对限制板翘的要求必定越来越严格。一般安装线路板允许的最大翘曲度为0.75%,不管双面或多层板,例如,对于1.6mm厚度的PCB板,通常允许的最大翘曲度是0.7-0.75%;还有不少SMT、BGA的PCB板要求最大翘曲度是0.5%,部分PCB厂甚至要求翘曲度标准提升到最大翘曲度为0.3%。测试PCB板翘曲度的方法为:一般把线路板放到检测台(如:大理石平整台面)上,把检试针(PCB用的针规)插到翘曲度最大的地方,以测试 ...
【技术保护点】
1.一种改善线路板翘曲的弓形治具,固定于用于承置线路板的支承架上,其特征在于:位于线路板两侧的支承架的侧杆顶端设有螺杆座,线路板两侧的螺杆座中穿设有螺杆,所述螺杆的两端与弓形件的两侧端固定连接,弓形件的弯曲顶端抵压线路板的翘曲部。/n
【技术特征摘要】
1.一种改善线路板翘曲的弓形治具,固定于用于承置线路板的支承架上,其特征在于:位于线路板两侧的支承架的侧杆顶端设有螺杆座,线路板两侧的螺杆座中穿设有螺杆,所述螺杆的两端与弓形件的两侧端固定连接,弓形件的弯曲顶端抵压线路板的翘曲部。
2.根据权利要求1所述的一种改善线路板翘曲的弓形治具,其特征在于:
线路板的每个翘曲部与一个弓形治具的弓形件的弯曲顶端抵压接触。
3.根据...
【专利技术属性】
技术研发人员:许校彬,吴观福,陈金星,张远礼,余烈,
申请(专利权)人:惠州市特创电子科技有限公司,
类型:新型
国别省市:广东;44
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