CN110620054A - 全自动深腔球引线键合头装置 - Google Patents

全自动深腔球引线键合头装置 Download PDF

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CN110620054A
CN110620054A CN201910764029.XA CN201910764029A CN110620054A CN 110620054 A CN110620054 A CN 110620054A CN 201910764029 A CN201910764029 A CN 201910764029A CN 110620054 A CN110620054 A CN 110620054A
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sliding table
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deep cavity
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CN110620054B (zh
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陈文�
牛伟光
潘兵
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NINGBO ADVANCE AUTOMATION TECHNOLOGY Co.,Ltd.
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Zhejiang Ruiqun Technology Co Ltd
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Abstract

本发明涉及一种全自动深腔球引线键合头装置，包括Z轴基座、Z轴滑台、打火机构、键合机构，键合机构设于Z轴滑台上，Z轴滑台与Z轴基座沿Z轴滑移连接。打火机构包括打火杆滑块、打火杆、压簧，打火杆滑块置于Z轴滑台一侧且与Z轴基座沿Z轴滑移连接，压簧连接在Z轴滑台上端与打火杆滑块上端间，打火杆连接在打火杆滑块下端；Z轴滑台靠下端处设有驱动触点，打火杆滑块上设有从动触点，从动触点与驱动触点上下抵压接触而使打火机构与Z轴滑台同步运动；Z轴基座上还设有限位块，限位块阻挡住打火杆滑块下移，驱动触点与从动触点脱离而使打火机构静止。本结构的打火机构可随劈刀同步大范围移动，又可静止打火，不阻碍键合运动，打火更快速可靠。

Description

全自动深腔球引线键合头装置
技术领域
本发明涉及键合设备技术领域，尤其涉及一种全自动深腔球引线键合头装置。
背景技术
全自动深腔球引线键合机是利用超声波，压力和温度将金属丝电气连接半导体芯片和管脚的一种设备。它的第一焊点为球形，利用施加在打火杆上的高电压击穿空气，与附近劈刀尖上的金属线之间形成电流回路，将金属丝局部融化成球状。球形键合的焊点更牢靠，一般用在芯片的焊盘上，或第一焊点上。由于需击穿空气形成电流回路，打火杆头部与劈刀尖有距离要求，工作时需靠得很近。这就对全自动深腔球引线键合机的打火机构提出了两个要求。第一，劈刀在一定范围内的不同高度都可以进行键合，这就要求打火杆与劈刀一样，可以进行大范围的Z向移动，实现打火功能。第二，打火系统不可以阻碍键合头的上下运动。快速，高可靠性是打火系统的基本要求。为满足这个特点，产生了本发明。
发明内容
本发明所要解决的技术问题在于克服上述问题，而提供一种全自动深腔球引线键合头装置，既可保证打火机构随劈刀同步大范围移动，又可实现其静止打火，不阻碍键合运动，打火更快速可靠。
本发明的技术方案是：一种全自动深腔球引线键合头装置，包括Z轴基座、Z轴滑台、打火机构、键合机构，键合机构固定在Z轴滑台上，Z轴滑台与Z轴基座沿Z轴滑移连接，其特征在于：
所述打火机构包括打火杆滑块、打火杆、压簧；所述打火杆滑块置于Z轴滑台一侧且与Z轴基座沿Z轴滑移连接，所述压簧连接在Z轴滑台上端与打火杆滑块上端之间，所述打火杆连接在打火杆滑块下端；所述Z轴滑台靠下端处设有驱动触点，打火杆滑块上对应设有从动触点，从动触点与驱动触点上下抵压接触而使打火机构与Z轴滑台同步运动；所述Z轴基座上还设有一个限位块，所述限位块阻挡住打火杆滑块下移，驱动触点与从动触点脱离而使打火机构保持静止。
借由上述结构，本发明在大范围运动时，打火杆滑块由于弹簧的作用一直使从动触点顶压在驱动触点上，因此打火杆滑块随着Z轴滑台和键合机构一起作上下运动，此时为大距离同步运动状态。当Z轴滑台和键合机构下降到一定位置时，打火杆滑块与限位块发生接触，限制了打火杆机构继续向下运动，而Z轴滑台和键合机构继续向下运动进行器件的键合，此时为静止打火状态。
进一步地，在本发明所述的全自动深腔球引线键合头装置中，所述打火杆滑块的下端设有旋转机构，所述旋转机构的输出端连接打火杆并驱动打火杆绕Z轴旋转。作为功能的扩张，通过旋转机构连接打火杆，使其可在打火时旋转到劈刀尖正下方，提高打火质量和可靠性。
进一步地，在本发明所述的全自动深腔球引线键合头装置中，所述旋转机构包括旋转螺旋管或第一音圈电机或气动元件。
进一步地，在本发明所述的全自动深腔球引线键合头装置中，所述限位块在Z轴基座上为可上下调节连接。
进一步地，在本发明所述的全自动深腔球引线键合头装置中，所述键合机构包括劈刀、换能器、第二音圈电机、平行四边形机构，所述平行四边形机构连接在Z轴滑台上，所述换能器设置在平行四边形机构的前端且与劈刀相连，所述第二音圈电机固定在Z轴滑台上并连接换能器进行键合力的调节。由此，所述换能器能够进行少量的Z向滑移。
进一步地，在本发明所述的全自动深腔球引线键合头装置中，所述Z轴基座与Z轴滑台之间设有用于驱动Z轴滑台滑移的Z轴直线电机。
进一步地，在本发明所述的全自动深腔球引线键合头装置中，所述Z轴基座与Z轴滑台之间设有沿Z轴延伸的第一导轨并通过第一导轨滑移配合。
进一步地，在本发明所述的全自动深腔球引线键合头装置中，所述Z轴基座与打火杆滑块之间设有沿Z轴延伸的第二导轨并通过第二导轨滑移配合。
进一步地，在本发明所述的全自动深腔球引线键合头装置中，所述Z轴基座与Z轴滑台之间设有用于测量Z轴滑台沿Z轴运动距离的测量尺组件，便于精准控制滑移距离。
进一步地，在本发明所述的全自动深腔球引线键合头装置中，所述平行四边形机构上还设有用于测量平行四边形机构沿Z轴运动距离的测量尺组件，便于精准反馈平行四边形机构的滑移距离。
本发明的有益效果是：
1、本发明结构简单，设计合理，具有静止打火、同步移位的双重功能，既能满足打火机构随劈刀同步大范围Z轴移动的目的，又不会阻碍键合机构的上下键合运动，打火更为快速可靠。
2、本发明也可以增设旋转机构实现打火杆的旋转定位，使打火杆对准劈刀尖端正下方打火，显著提高打火质量和可靠性，且在完成打火后能够回旋复位，不影响键合机构的下降键合。
3、限位块位置可上下调节，能够保证在打火效率与避空器件之间达到最优。
附图说明
图1为实施例1处于从动状态时的结构示意图。
图2为实施例1处于打火状态时的结构示意图。
图3为实施例2处于打火状态时的结构示意图。
具体实施方式
现结合附图对本发明作进一步的说明：
实施例1
参照图1和图2所示，本实施例所述的一种全自动深腔球引线键合头装置，包括Z轴基座1、Z轴滑台2、打火机构、键合机构，键合机构固定在Z轴滑台2上，Z轴滑台2与Z轴基座1沿Z轴滑移连接，所述Z轴基座1与Z轴滑台2之间设有沿Z轴延伸的第一导轨3并通过第一导轨3滑移配合。所述Z轴基座1与Z轴滑台2之间设有用于驱动Z轴滑台2滑移的Z轴直线电机8。所述Z轴基座1与Z轴滑台2之间设有用于测量Z轴滑台2沿Z轴运动距离的测量尺组件9。
所述打火机构包括打火杆滑块4、打火杆5、压簧6；所述打火杆滑块4置于Z轴滑台2一侧且与Z轴基座1沿Z轴滑移连接，所述Z轴基座1与打火杆滑块4之间设有沿Z轴延伸的第二导轨7并通过第二导轨7滑移配合。所述压簧6连接在Z轴滑台2上端与打火杆滑块4上端之间，所述打火杆5连接在打火杆滑块4下端；所述Z轴滑台2靠下端处设有驱动触点10，打火杆滑块4上对应设有从动触点11，从动触点11与驱动触点10上下抵压接触而使打火机构与Z轴滑台2同步运动；所述Z轴基座1上还设有一个限位块12，所述限位块12阻挡住打火杆滑块4下移，驱动触点10与从动触点11脱离而使打火机构保持静止。
所述键合机构包括劈刀13、换能器14、第二音圈电机15、平行四边形机构16，所述平行四边形机构16连接在Z轴滑台2上，所述换能器14设置在平行四边形机构16的前端且与劈刀13相连，所述第二音圈电机15固定在Z轴滑台2上并连接换能器14进行键合力的调节。为了便于精准反馈平行四边形机构16的微动量大小，所述平行四边形机构16上还设有用于测量平行四边形机构16沿Z轴运动距离的测量尺组件9。其中，上述测量尺组件9均可采用光栅尺。
本结构的工作原理是：当Z轴滑台2带动键合机构向下大范围滑移时，在压簧6作用下，从动触点11压紧在驱动触点10上而使得打火杆滑块4随Z轴滑台2作同步运动，此时为从动状态；当下降至限位块12处时，打火杆滑块4被限位块12阻挡并由于压簧6的作用压紧在限位块12上而使得整个打火机构处于静止状态，此时为打火状态，打火杆5与劈刀13之间进行打火操作。其后，当Z轴滑台2带动键合机构继续下降进行键合操作。反之，当Z轴滑台2向上滑移到一定位置时，驱动触点10向上抵压从动触点11而使打火杆滑块4与Z轴滑台2恢复从动状态，带动打火杆5上升，进行大范围运动。
实施例2
参照图3所示，本实施例与实施例1结构基本相同，不同之处在于：所述打火杆滑块4的下端设有旋转机构17，所述旋转机构17的输出端连接打火杆5并驱动打火杆5绕Z轴旋转，所述旋转机构17包括旋转螺旋管或第一音圈电机或气动元件。本结构中打火杆5可以直接旋转到劈刀13正下方，提高打火的可靠性和一致性。打火完毕，打火杆5转动离开，以让换能器14和劈刀13继续向下进行键合。
实施例3
本实施例与实施例1结构基本相同，不同之处在于：所述限位块12在Z轴基座1上为可上下调节连接，能够根据实际工况情况上下调节限位块12使其达到最为理想的的位置，达到协调打火效率与避空器件两者的目的。
本文中所描述的具体实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，但凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (10)

1.一种全自动深腔球引线键合头装置，包括Z轴基座、Z轴滑台、打火机构、键合机构，键合机构固定在Z轴滑台上，Z轴滑台与Z轴基座沿Z轴滑移连接，其特征在于：
所述打火机构包括打火杆滑块、打火杆、压簧；所述打火杆滑块置于Z轴滑台一侧且与Z轴基座沿Z轴滑移连接，所述压簧连接在Z轴滑台上端与打火杆滑块上端之间，所述打火杆连接在打火杆滑块下端；所述Z轴滑台靠下端处设有驱动触点，打火杆滑块上对应设有从动触点，从动触点与驱动触点上下抵压接触而使打火机构与Z轴滑台同步运动；所述Z轴基座上还设有一个限位块，所述限位块阻挡住打火杆滑块下移，驱动触点与从动触点脱离而使打火机构保持静止。
2.根据权利要求1的全自动深腔球引线键合头装置，其特征在于：所述打火杆滑块的下端设有旋转机构，所述旋转机构的输出端连接打火杆并驱动打火杆绕Z轴旋转。
3.根据权利要求2的全自动深腔球引线键合头装置，其特征在于：所述旋转机构包括旋转螺旋管或第一音圈电机或气动元件。
4.根据权利要求1或2或3的全自动深腔球引线键合头装置，其特征在于：所述限位块在Z轴基座上为可上下调节连接。
5.根据权利要求1或2或3的全自动深腔球引线键合头装置，其特征在于：所述键合机构包括劈刀、换能器、第二音圈电机、平行四边形机构，所述平行四边形机构连接在Z轴滑台上，所述换能器设置在平行四边形机构的前端且与劈刀相连，所述第二音圈电机固定在Z轴滑台上并连接换能器进行键合力的调节。
6.根据权利要求1或2或3的全自动深腔球引线键合头装置，其特征在于：所述Z轴基座与Z轴滑台之间设有用于驱动Z轴滑台滑移的Z轴直线电机。
7.根据权利要求1或2或3的全自动深腔球引线键合头装置，其特征在于：所述Z轴基座与Z轴滑台之间设有沿Z轴延伸的第一导轨并通过第一导轨滑移配合。
8.根据权利要求1或2或3的全自动深腔球引线键合头装置，其特征在于：所述Z轴基座与打火杆滑块之间设有沿Z轴延伸的第二导轨并通过第二导轨滑移配合。
9.根据权利要求1或2或3的全自动深腔球引线键合头装置，其特征在于：所述Z轴基座与Z轴滑台之间设有用于测量Z轴滑台沿Z轴运动距离的测量尺组件。
10.根据权利要求5的全自动深腔球引线键合头装置，其特征在于：所述平行四边形机构上还设有用于测量平行四边形机构沿Z轴运动距离的测量尺组件。
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