CN111420818B - 旋转式计量头 - Google Patents

旋转式计量头 Download PDF

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CN111420818B
CN111420818B CN202010226691.2A CN202010226691A CN111420818B CN 111420818 B CN111420818 B CN 111420818B CN 202010226691 A CN202010226691 A CN 202010226691A CN 111420818 B CN111420818 B CN 111420818B
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马丁·路透
雅各布·路透
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Marco Systemanalyse und Entwicklung GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B05B15/652—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits whereby the jet can be oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/025—Rotational joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0431—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to 3D-surfaces
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    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/10—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in the form of a fine jet, e.g. for use in wind-screen washers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
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    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0278—Arrangement or mounting of spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0421—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with rotating spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/68—Arrangements for adjusting the position of spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/021—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements with means for regulating the jet relative to the horizontal angular position of the nozzle, e.g. for spraying non circular areas by changing the elevation of the nozzle or by varying the nozzle flow-rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1034—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves specially designed for conducting intermittent application of small quantities, e.g. drops, of coating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
    • B05C5/0212—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles
    • B05C5/0216—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles by relative movement of article and outlet according to a predetermined path
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    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
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  • Coating Apparatus (AREA)
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Abstract

一种旋转式计量头，其包括可围绕旋转轴线旋转的平台，并且在平台上布置有用于喷射流体材料的喷射阀。

Description

旋转式计量头
技术领域
本申请涉及计量设备，尤其涉及旋转式计量头。
背景技术
在制造诸如智能手机和平板电脑之类的电子元器件和设备时，大量生产步骤都需要胶粘工艺。喷射阀经常用于此目的，因为，一方面是喷射阀允许非接触地施加粘合剂或其他介质，最重要的是还可以实现很高的计量频率。对于特定的应用，可能还需要通过接触计量来施加介质。在这种情况下，计量阀（喷射阀）通常具有计量针，并且在计量针和工件之间以很小的间距沿待计量的路径移动。
对于许多应用而言，将介质施加到工件上是垂直于相应工件进行的。在此过程中，借助多轴机械手使阀门和工件彼此相对移动。这些机器人通常具有三个轴，即用于在工件平面内运动的两个轴（x轴和y轴）和垂直于工件运动的一个轴（z轴）。然而，不以垂直方式而是以限定的角度施加介质对于许多计量应用而言是有利的。例如，在这种情况下，必须在边缘进行计量，并且介质必须同时覆盖x-y平面的特定表面以及垂直于x-y平面的特定表面，或者必须在工件的垂直表面上进行计量。倾斜施加对于底部填充工艺也是有利的。
如今，商用计量阀用于斜向喷射和/或计量，并通过机器人上的附加轴移动。但是，枢轴点因此远离计量点。然而，这种布置仍然不适合于精确地执行控制。
在已知的计量系统中，由于计量阀的尖端设置在旋转轴线之外，因此计量尖端的位置根据角度和旋转而改变。在这种情况下，尖端围绕轴以圆形或球形运动。由于阀和工件之间的间距必须很小，才能稳定且精确地进行计量（不会产生分散点（no satelliteformation），所施加介质的准确位置），典型的喷射阀设计不允许在机器人中进行倾斜安装。然后边缘和向内布置的表面通常只能由长的针头到达，这又使阀的喷射操作更加困难甚至妨碍其进行。
发明内容
本发明的目的是提供一种用于喷射流体材料的旋转式计量头，该旋转式计量头造价低廉，并且特别地使得能够简单地控制移动计量头的机器人。
该目的通过以下描述的特征得以解决，尤其是旋转式计量头具有旋转平台，该旋转平台可围绕旋转轴线旋转，该旋转平台可围绕旋转轴线自由旋转360°，并且在旋转平台上布置有带计量轴的喷射阀。根据本发明，喷射阀布置在旋转平台上，使得在旋转平台旋转时，计量轴线与旋转轴线之间的交点也保持不变。
在根据本发明的旋转式计量头中，旋转平台的旋转中心等于计量点，由此在旋转平台的旋转中计量点也不改变。从而无需对移动旋转式计量头的机器人进行复杂的控制或重新调整。这同样适用于具有变化的喷嘴几何形状的情况，通过该几何形状改变计量间隔。
在说明书和附图中描述了本发明的有利实施方式。
根据第一有利实施方式，可提供可360°自由旋转的旋转接头，用于旋转式计量头的电供应和流体供应。以这种方式，喷射阀可以在任何期望的方向上旋转360°或更多，并根据需要频繁地旋转，由此可以以多种方式使用旋转式计量头。同时，与已知系统相比，也大大简化了运动的计算和控制。
与能够改变计量角度的已知系统相反，利用根据本发明的旋转式计量头，不必通过机器人控制或系统控制来重新计算计量点，而且在改变计量间距或计量角度时，不必通过相应改变的机器人运动来补偿。
根据另一有利的实施方式，可以在旋转平台和旋转接头的可旋转部分之间设置夹带器。以这种方式，旋转接头不仅仅通过电缆或线路旋转，从而提供了应力消除。
根据另一个有利的实施方式，可以在旋转平台上设置料筒保持器，从而可以将具有流体例如粘合剂的料筒可旋转地附接到阀附近并且与阀一起。
根据另一有利的实施方式，喷射阀可以可调节地固定在旋转平台上，并且实际上使得所述喷射阀在平行于计量轴线的纵向方向上可调节，并且使得可以设定计量轴线和旋转轴线之间的角度。由此可以设定不同的计量角度和不同的计量空间，而不必改变机器人的控制。例如可以在0°至45°之间进行角度调节，然而，根据构造方式，也可以设置高达90°或更大的角度，从而可以在复杂几何形状中以倾斜角度实施计量。由于自由旋转，在这方面仍然提供了以预设角度围绕工件计量的可能性。由于阀的尖端始终面向旋转轴线，并且阀与旋转轴之间的间距可以调节，因此计量始终在一点并且在同一点上进行。旋转平台的旋转中心和喷射阀的角度变化的中心始终是计量点，因此在角度调整时计量点也始终保持不变。
根据有利的实施方式，可以设置相应的刻度，以调节纵向调节和/或喷射阀的角度调节，这简化了计量间隔和计量角度的手动设定或调节。
根据另一有利的实施方式，可以在旋转平台上设置例如具有电动机的旋转驱动器。由此，旋转平台可以通过具有内齿的链轮齿被驱动，由此以保护的方式容纳驱动器的齿状布置。此外，整个系统的结构尺寸因此可以保持非常小。整个系统越大，安装了计量系统的机器人的工作区域将受到更多的限制。因此，紧凑的设计是重要的方面。旋转平台的尺寸基本上由可旋转的计量阀所需的空间确定。但是，电动机仍然可以集成在阀所需的平台半径之内。
附图说明
下面，将参照有利实施方式和附图，仅通过示例的方式来描述本发明。如下：
图1是旋转式计量头的透视图；
图2是图1的旋转式计量头未插入料筒时的局部剖视图；和
图3是图1和图2的旋转式计量头的喷射阀的透视图。
具体实施方式
图1和图2所示的旋转式计量头10是用于喷射流体材料，例如粘合剂，并包括可绕旋转轴线A旋转的旋转平台12（图2），该旋转平台12可围绕旋转轴线A自由旋转360°，并且在其上布置有具有计量轴线D的喷射阀14。沿计量线轴D将非常少量的待计量流体喷射（喷射）到工件（未显示）上。
计量平台12布置在横截面大致为L形的支架16上，其中，组装平台12位于支架16的分支中，在图中支架16是水平的。支架16的垂直臂可以固定到计量机器人上。另一个同样大致为L形的支撑件18固定在支架16的垂直臂的上侧上，并具有一个在旋转平台12上伸出的领臂（collar arm）20，一个可自由旋转360°的旋转接头22固定在该领臂的自由端上，使得旋转接头22的旋转轴线与旋转轴线A同轴（图2）。旋转接头22具有多个电滑动触头24和一个旋转接头26，其用于通向短管28的旋转式计量头的流体供应。旋转式计量头的电供应可以通过滑动触头24进行，即，对电驱动器的控制和对喷射阀14的控制。待喷射的流体可通过流体引导通过压力作用。
如图1所示，在旋转平台12上提供了一个料筒保持器30，可以将装有流体的料筒32插入料筒保持器30中。该料筒中存在的流体一方面可以通过压力作用，并且可以另一方面，在料筒32与喷射阀14之间以及在旋转接头22的短管28与料筒的短管33之间通过软管连接（未详细示出），输送到喷射阀14。为了在这方面减少旋转时料筒33与旋转接头22之间存在的软管连接以及旋转平台12与旋转接头22之间存在的电线，在料筒保持器30与旋转接头22的旋转部分23之间设置有夹带器34，使得旋转接头22的旋转部分23与旋转平台12一起围绕旋转轴线A旋转。电动机36设置在旋转平台12上，用于驱动旋转平台12绕旋转轴线A旋转，所述电动机36通过齿轮啮合到链轮齿38中，该链轮齿38具有内齿40，并且该链轮齿38固定在保持器16的水平臂上。旋转平台12支撑在球轴承中，因此，在电动机36的驱动下绕轴线A旋转。
图3示出了喷射阀14的放大透视图，该喷射阀在其上侧具有用于供电的插头44，并且具有用于供应要喷射的介质的侧向短管46。出口喷嘴48可调节地布置在喷射阀14处，并且可以借助于调节杆50沿着计量轴线D调节，其中，提供刻度尺52以简化设置。计量轴线D与旋转轴线A之间的交点为计量点，计量间距（即喷嘴尖端48与计量点之间的间距）可以以这种方式调节。
此外，喷射阀14固定在旋转平台12上，使得旋转轴线A和计量轴线D之间的角度可以手动设定。在这方面，指示器54设置在喷射阀14处，以简化设置，使得可以以图中无法识别的比例读取设置角度。
由于采用了上述旋转式计量头，因此即使改变了计量间距，更换了新几何形状的喷嘴，改变了旋转角度或改变了计量距离，也可以对计量机器人进行非常少的控制，而无需机器人控制装置进行补偿，因为该机器人始终必须走相同的距离。

Claims (9)

1.一种用于喷射流体材料的旋转式计量头，其特征在于，包括：
可绕旋转轴线（A）旋转的旋转平台（12），所述旋转平台（12）可绕旋转轴线（A）自由旋转360°，并且在所述旋转平台（12）上布置具有计量轴线（D）的喷射阀（14），使得在所述旋转平台（12）旋转时，计量轴线（D）和旋转轴线（A）之间的交点保持不变；
其中，设置有可360°自由旋转的旋转接头（22），用于所述旋转式计量头的电供应和流体供应；
所述旋转平台（12）上设置有旋转驱动器，所述旋转驱动器包括电动机（36）。
2.根据权利要求1所述的旋转式计量头，其特征在于，夹带器（34）设置在所述旋转平台（12）和所述旋转接头（22）的可旋转部分（23）之间。
3.根据权利要求1所述的旋转式计量头，其特征在于，在所述旋转平台（12）上设置有料筒保持器（30）。
4.根据权利要求1所述的旋转式计量头，其特征在于，所述喷射阀（14）可调节地固定在所述旋转平台（12）上，使得所述喷射阀（14）在平行于所述计量轴线（D）的纵向方向上可调节，并且使得所述计量轴线（D）和所述旋转轴线（A）之间的角度可以被设定。
5.根据权利要求4所述的旋转式计量头，其特征在于，所述计量轴线（D）和所述旋转轴线（A）之间的角度设定在0°至45°之间。
6.根据权利要求4所述的旋转式计量头，其特征在于，所述计量轴线（D）和所述旋转轴线（A）之间的交点在纵向方向上的调节时和/或角度调节时保持不变。
7.根据权利要求4至6中任一项所述的旋转式计量头，其特征在于，设置有刻度尺（52），用于在所述纵向方向上的调节和/或角度的调节。
8.根据权利要求1至6中任一项所述的旋转式计量头，其特征在于，所述旋转平台（12）通过链轮齿（38）驱动。
9.根据权利要求8所述的旋转式计量头，其特征在于，所述链轮齿（38）具有内齿（40）。
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