Method for wave-soldering printed circuit boards
    81.
    发明授权
    Method for wave-soldering printed circuit boards 失效
    印刷电路板波峰焊方法

    公开(公告)号:US5813595A

    公开(公告)日:1998-09-29

    申请号:US737183

    申请日:1997-03-07

    Abstract: A method is provided for wave-soldering printed circuit boards. In order to obtain wave-soldered printed circuit boards with smallest possible number of solder globules, after the passage on the wave of solder, the printed circuit boards are further artificially cooled at an approximately constant time-temperature gradient of 20 K/sec.

    Abstract translation: PCT No.PCT / DE95 / 00441 Sec。 371日期1997年3月7日 102(e)1997年3月7日PCT 1995年3月22日PCT PCT。 WO95 / 30509 PCT公开号 日期1995年11月16日提供了一种用于波峰焊印刷电路板的方法。 为了获得具有最小可能数量的焊球的波焊焊接印刷电路板,在焊料波通过之后,将印刷电路板进一步人为地以20K /秒的恒定时间温度梯度人为地冷却。

    Process and apparatus and panel heater for soldering electronic
components to printed circuit board
    83.
    发明授权
    Process and apparatus and panel heater for soldering electronic components to printed circuit board 失效
    用于将电子元件焊接到印刷电路板的工艺和设备以及面板加热器

    公开(公告)号:US5770835A

    公开(公告)日:1998-06-23

    申请号:US779523

    申请日:1997-01-07

    Abstract: In accordance with the present invention, there is provided a soldering process comprising the steps of: providing in a furnace first and second heaters each adapted to emit infrared energy; setting a printed circuit boad, which has a solder paste and an electronic component thereon, in the furnace; heating the printed circuit boad with the first heater; and heating the electronic component with the second heater; wherein the first and second heaters have different radiation spectra such that infrared energy irradiated by the first heater is more absorbed by the printed circuit board and less absorbed by the electronic component than that irradiated by the second heater. The present invention also provides a soldering apparatus for use in such soldering process.

    Abstract translation: 根据本发明,提供了一种焊接方法,其包括以下步骤:在炉中设置每个适于发射红外能量的第一和第二加热器; 在炉中设置印刷电路板,其上具有焊膏和电子部件; 用第一个加热器加热印刷电路; 以及用所述第二加热器加热所述电子部件; 其中所述第一加热器和所述第二加热器具有不同的辐射光谱,使得由所述第一加热器照射的红外能量被所述印刷电路板吸收,并且比由所述第二加热器照射的红外能量被电子部件吸收的吸收少。 本发明还提供一种用于这种焊接工艺的焊接装置。

    Shield and method for selective wave soldering
    85.
    发明授权
    Shield and method for selective wave soldering 失效
    选择波峰焊的屏蔽和方法

    公开(公告)号:US5704535A

    公开(公告)日:1998-01-06

    申请号:US801996

    申请日:1997-02-18

    Abstract: A shield (50) for use in wave soldering processes to selectively affix solder to an area of circuit board (20), having one or more electronic components (21) on the solder side of the board, is disclosed. Shield (50) includes a generally planar base member (51) of low thermal conductivity which forms the foundation of shield (50). Marginally disposed registration ridges (54) are formed on the upper surface (52). Registration ridges (54) serve to hold circuit board (20) against shield (50) in a fixed position. Ridges (54) are positioned to closely receive the peripheral edges of circuit board (20). One or more solder flow openings (56) are formed through base member (51) extending from upper side (52) to lower side (53). Solder flow openings (56) are positioned to align with the selected areas of circuit board (20) to which solder is to be affixed. One or more recesses (55) are provided in the upper surface (52) of base member (51) to receive and shield electronic components (21).

    Abstract translation: 公开了一种用于波峰焊工艺的屏蔽件(50),用于选择性地将焊料粘贴到电路板(20)的区域上,在电路板的焊料侧具有一个或多个电子部件(21)。 屏蔽(50)包括形成屏蔽(50)的基础的低热导率的大致平面的基底构件(51)。 在上表面(52)上形成有边缘布置的配准脊(54)。 对齐脊(54)用于将电路板(20)抵靠屏蔽件(50)固定在固定位置。 定位脊(54)以紧密接收电路板(20)的外围边缘。 一个或多个焊剂流动开口(56)形成为从上侧(52)向下侧(53)延伸的基底构件(51)。 焊接流动开口(56)被定位成与要被固定焊料的电路板(20)的选定区域对齐。 一个或多个凹部(55)设置在基部构件(51)的上表面(52)中,以接纳和屏蔽电子部件(21)。

    Device for moving an object by means of thermal change in shape or volume
    86.
    发明授权
    Device for moving an object by means of thermal change in shape or volume 失效
    用于通过形状或体积的热变化来移动物体的装置

    公开(公告)号:US5702051A

    公开(公告)日:1997-12-30

    申请号:US640758

    申请日:1996-05-07

    CPC classification number: B23K1/018 B23K2201/42

    Abstract: The invention provides a device for moving an object by means of thermal change in shape or volume, such that the object is moved when a predetermined process temperature has been reached. Preferably the device can be used in a soldering system on a printed circuit board. The advantage of the invention lies in a temperature-controlled movement of the object with a high-level precision that, for example, ensures a very sparing unsoldering.

    Abstract translation: PCT No.PCT / EP94 / 03645 Sec。 371日期:1996年5月30日 102(e)日期1996年5月30日PCT 1994年11月7日PCT PCT。 公开号WO95 / 13161 日期1995年5月18日本发明提供一种通过形状或体积的热变化来移动物体的装置,使得当达到预定的工艺温度时物体被移动。 优选地,该装置可以用在印刷电路板上的焊接系统中。 本发明的优点在于以高精度的物体的温度控制运动,例如,确保非常节省的绝缘。

    Soldering apparatus with abrupt separation of solder streams
    88.
    发明授权
    Soldering apparatus with abrupt separation of solder streams 失效
    具有焊料流突然分离的焊接设备

    公开(公告)号:US5630542A

    公开(公告)日:1997-05-20

    申请号:US341199

    申请日:1994-12-05

    CPC classification number: H05K3/3468 B23K3/0653 B23K2201/42 H05K2201/2027

    Abstract: The invention relates to a soldering apparatus, comprising a solder vessel; at least one soldering tower located in said solder vessel; transport means for transporting objects to be soldered over said soldering tower; solder wave generating means for generating a solder wave emerging from the apex of the soldering tower and contacting the objects to be soldered, the soldering tower comprising a weir such that at least a part of the solder wave flows parallel to the direction of movement of the objects to be soldered over said weir; and guide means for guiding said part of the solder wave such that the solder wave leaves the soldered object substantially abruptly. As a consequence of said feature the stream of solder is abruptly guided away from the printed circuit board, so that the possibilities for developing short circuits on the printed circuit board are substantially reduced.

    Abstract translation: 本发明涉及一种焊接装置,包括焊料容器; 位于所述焊料容器中的至少一个焊接塔; 用于运输通过所述焊接塔焊接的物体的运输装置; 焊接波产生装置,用于产生从焊接塔的顶点出现并与待焊接的物体接触的焊波,所述焊接塔包括堰,使得焊波的至少一部分平行于所述焊料的移动方向流动 对象要焊接在所述堰上; 以及引导装置,用于引导焊波的所述部分,使得焊波基本上突然离开焊接对象。 作为所述特征的结果,焊料流突然地被引导离开印刷电路板,使得在印刷电路板上发展短路的可能性显着降低。

    Device for measuring the height of a solder wave
    89.
    发明授权
    Device for measuring the height of a solder wave 失效
    用于测量焊波高度的装置

    公开(公告)号:US5617988A

    公开(公告)日:1997-04-08

    申请号:US608544

    申请日:1996-02-28

    CPC classification number: B23K3/0653 B23K2201/42

    Abstract: The invention relates to a device for measuring the height of a solder wave in a soldering apparatus which comprises a solder bath and which is provided with at least one solder tower for generating a solder wave and a pump connected to the solder tower, wherein the measuring device comprises: means for measuring the liquid pressure in the connection between the pump and the solder tower. As a result of these steps it is possible to measure accurately the pressure of the solder moving out of the pump to the solder tower. This pressure is in any case a good measure for the height of the solder wave. According to a first preferred embodiment the means for measuring the liquid pressure comprise a measuring vessel joined to the connection between pump and tower and communicating at its top with the atmosphere, the upper edge of which vessel is located higher than the outflow opening of the solder tower.

    Abstract translation: 本发明涉及一种用于测量焊接装置中的焊波高度的装置,其包括焊料槽,并且设置有至少一个用于产生焊波的焊料塔和连接到焊料塔的泵,其中测量 装置包括:用于测量泵和焊料塔之间的连接中的液体压力的装置。 作为这些步骤的结果,可以精确地测量从泵流出到焊料塔的焊料的压力。 这种压力在任何情况下都是焊波高度的一个很好的测量。 根据第一优选实施例,用于测量液体压力的装置包括连接到泵和塔架之间的连接并且在其顶部与大气连通的测量容器,其上边缘位于高于焊料的流出开口 塔。

    Mask for printing solder paste
    90.
    发明授权
    Mask for printing solder paste 失效
    用于印刷焊膏的面膜

    公开(公告)号:US5593080A

    公开(公告)日:1997-01-14

    申请号:US489616

    申请日:1995-06-12

    Abstract: A mask for printing solder paste includes a mask plate, and first mask holes which are formed in the mask plate and have a first size, and second mask holes which are formed in the mask plate and have a second size smaller than the first size. The mask plate has a first region having the first mask holes, and a second region having the second mask holes. The mask plate has a first thickness in the first region, and a second thickness in the second region. The second thickness is smaller than the first thickness.

    Abstract translation: 用于印刷焊膏的掩模包括掩模板和形成在掩模板中并具有第一尺寸的第一掩模孔和形成在掩模板中并且具有小于第一尺寸的第二尺寸的第二掩模孔。 掩模板具有具有第一掩模孔的第一区域和具有第二掩模孔的第二区域。 掩模板在第一区域具有第一厚度,在第二区域具有第二厚度。 第二厚度小于第一厚度。

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