• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    ABSTRACT A crimping tool (10) is disclosed for crimping items to a substantially ellipsoidal shape. Thecrimping tool comprises a first and a second die (11,21) arranged to interact with each other,each comprising a circular segment surface (12,22), wherein the dies are arranged such thatthe circular segments (12,22) are opposed each other forming a substantially ellipsoidal shape(E1-E3) between them. The first die (11) is pivotally arranged to move in a part circularmovement with respect to the second die (12), substantially without rotating around its owncentre, wherein the circular segment (12) of the first die (1 1) at a trailing end thereof comprisesan edge (13) arranged to follow the circular segment surface (22) of the second die (21),thereby continuously closing a first end (31) of the substantially ellipsoidal shape (E1-E3)between the circular segments (12,22). (Fre. 1)
    公开号:SE1650821A1
    申请号:SE1650821
    申请日:2016-06-10
    公开日:2017-12-11
    发明作者:Ullbors Daniel
    申请人:Pressmaster Ab；
    IPC主号:
    专利说明:

    [1] [0001] The invention relates to a self-adjusting crimping tool for crimping items ofdifferent sizes. The crimping tool may be a hand tool or a powered tool, e.g. a hydraulically,pneumatically or electrically powered tool.
    [2] [0002] Crimping tools are used for cable termination and may be hand tools orpowered tools, e.g. hydraulically powered tools. Cable termination is required e.g. forconnecting a cable or a wire to power, coaxial, fibre-optic or modular connectors. Thecrimping tool provides a clamping force that mechanically clamps a connector to an endportion of a cable. Hence, when crimping, a connector i.e. a terminal, splice, contact or asimilar device is mechanically secured to a cable - e.g. to a conductor such as a wire - bydeformation so that a solid joint having reliable mechanical and electrical connection isformed. The crimping operation resulting in a crimped joint is e.g. performed using crimpingdies.
    [3] [0003] Different connectors have different shapes and different sizes. Therefore, thetool heads of crimping tools are typically specifically adapted to a specific connector shapeand may e.g. be polygonal, circular or oval. Further, the tool head needs to be adapted to aspecific size. Conventionally, a tool head has not been adapted to crimp connectors of different sizes. lnstead, multiple dies or dies with multiple crimping positions have been used.
    [4] [0004] ln US 2015/349478 a crimping tool is disclosed, in which crimping dies are co-operating so as to crimp an item into a rectangular, specifically quadratic, cross section. Theco-operating dies of the crimping tool are advantageous in that they accept different sizes ofthe same cross sectional shape. The technique may also be implemented on other polygonalshapes, such as e.g. hexagonal or triangular, by arranging a corresponding number of dieson the tool head. lt is however not adapted to handle other shapes than polygonal shapes.
    [5] [0005] Crimping tools for crimping non-polygonal shapes such as oval shapes or thelike are generally not adapted for items of different sizes. Normally such tools compriseseveral positions, each designed for the crimping of an item of a specific size. There is notone position that is adapted to crimp oval shapes of different sizes.
    [6] [0006] Hence, there is a need of a crimping tool that facilitates crimping of non-polygonal shapes, such as oval shapes.
    [7] [0007] lt is an object of the present invention to provide a crimping tool that facilitatescrimping of non-polygonal shapes, such as oval shapes.
    [8] [0008] The invention relates to a crimping tool for crimping items to a substantiallyellipsoidal shape, the crimping tool comprising a first and a second die arranged to interactwith each other, each comprising a circular segment surface, wherein the dies are arrangedsuch that the circular segments are opposed each other forming a substantially ellipsoidalshape between them, characterised in that the first and the second interacting dies aremovable with respect to each other, the first die being pivotally arranged to move in a partcircular movement with respect to the second die, substantially without rotating around itsown centre, wherein the circular segment of the first die at a trailing end thereof comprisesan edge arranged to follow the circular segment surface of the second die, therebycontinuously closing a first end of the substantially ellipsoidal shape between the circularsegments.
    [9] [0009] ln accordance with specific embodiment if the invention the second diecomprises an edge arranged to follow the circular segment surface of the first die, therebycontinuously closing a second end of the substantially ellipsoidal shape between the circularsegments.
    [10] [0010] ln another specific embodiment the second die is fixed on the crimping tool and the first die is pivotally arranged in two, or more, pivot arms of an equal pivot length.
    [11] [0011] ln yet another specific embodiment the circular segment surfaces of both thefirst and second die have a radius of curvature that correspond to a circle with radiusesequalling the pivot length of the two pivot arms.
    [12] [0012] The crimping tool may be a hand tool or a powered tool, e.g. a hydraulically,pneumatically or electrically powered tool.
    [13] [0013] Other embodiments and advantages will be apparent from the detaileddescription and the appended drawings.
    [14] [0014] An exemplary embodiment related to the invention will now be described withreference to the appended drawings, in which; Fig. 1-3 are schematic views of the crimping dies in a crimping movement from an open position in fig. 1 to an almost closed position in fig. 3; Fig. 4 shows the dies of the crimping tool positioned in a first end position;Fig. 5 shows the dies of the crimping tool positioned in a second end position; andFig. 6 illustrate various geometric proportions of the crimping tool, with the dies positioned in the first end position.DETAILED DESCRIPTION OF EMBODIMENTS
    [15] [0015] ln figures 1-3 a crimping tool 10 for crimping items, such as connectors to awire end, into a substantially ellipsoidal shape in three different states. The crimping tool 10may be a hand tool or a powered tool, e.g. a hydraulically, pneumatically or electricallypowered tool. Below the interaction between the two dies 11 and 12 of the crimping tool isdescribed. This interaction is independent of whether the tool is a hand tool or a poweredtool. lt is obvious to a person skilled in the art how to provide linked arms for implementingthe dies in a hand tool or how to provide a motor arrangement for implementing the dies in apowered tool.
    [16] [0016] The crimping tool 10 comprises a tool head 20 carrying a first die 11 and asecond die 21 arranged to interact with each other. Each die 11,21 comprises a circularsegment surface 12,22 and the dies are arranged such that the circular segments 12,22 areopposed each other forming a substantially ellipsoidal shape Ers between them. The firstand the second interacting dies 11,21 are movable with respect to each other. ln the shownembodiment the first die 11 is pivotally arranged to move in a part circular movement withrespect to the second die 12, substantially without rotating around its own centre. The firstdie 11 is moved by providing a force F in a closing direction as illustrated in figure 1.Preferably, the first die 11 is biased in the opposite direction so as to, after a concludedcrimping operation, return the first die 11 to an initial open position, ready for a subsequent crimping operation.
    [17] [0017] ln the shown embodiment the second die 21 is fixed with respect to the toolhead 20 of the crimping tool 10, wherein the first die 11 is pivotally arranged in two pivotarms 24,25 of an equal pivot length Lp (see fig. 1). As illustrated in figure 2 both arms arepivotally arranged to the tool head 20 in fixed pivot points A1, wherein the first die 11 isattached to the pivot arms 24,25 in movable pivot pints A2. The pivot length LP is hereintended to be construed as the distance Fit between a movable pivot point A2 of a pivot arm and a fixed pivot point A1 of the same pivot arm. This arrangement of tvvo pivot arms 24,25 ofequal length makes sure that the first die 11 will not rotate around its centre. lnstead itstrajectory will describe a part of a circle with a radius of curvature corresponding to the pivotlength Lp of the pivot arms. The die may also be arranged in more than tvvo pivot arms or inonly one pivot arm complemented by an arrangement for limiting rotation of the fist diearound its own centre. The second die 21 is fixed to the tool head 20, e.g. by fasteners 14and 15.
    [18] [0018] The circular segment 12 of the first die 11 comprises an edge 13, whichconstitutes a first end 31, a trailing end, of the circular segment 12 with respect to its circularmovement and which is arranged to follow the circular segment surface 22 of the second die21 closely, thereby continuously closing a first end of the substantially ellipsoidal shape E1.3between the circular segments 12,22. The first end 31 of the substantially ellipsoidal shape ishence defined by the interaction of the edge 13 of the of the first die 11 and the circularsegment surface 22 of the second die 21.
    [19] [0019] Likewise, the circular segment 22 of the second die 21 comprises an edge 23,which constitutes a distal, second end of the circular segment 22 with respect to the circularmovement of the first die 11 and which is arranged to closely follow the circular segmentsurface 12 of the first die 11 as it progresses in its circular movement, thereby continuouslyclosing the second end 32 of the substantially ellipsoidal shape between the circularsegments 12,22. The second end is hence formed between the edge 23 of the of the seconddie 21 and the circular segment 12 of the first die 11.
    [20] [0020] A crimping operation is performed in that one or more item to be crimped, e.g. aconnector and wire end onto which the connector should be crimped, are positioned in thesubstantially ellipsoidal shape Ei between the circular segments 12,22 when it is in an openposition, i.e. as shown in figure 1. Once the item(s) have been positioned the first die 11 isset to move in its circular trajectory whereby the substantially ellipsoidal shape El betweenthe circular segments 12,22 continuously decreases in size via the medium sized ellipsoidalshape Eg in figure 2, to the very small ellipsoidal shape Es in figure 3. The crimping operationis typically driven until a predetermined force, corresponding to a target crimping force, isaccomplished. Hence, the crimping operation may be concluded at any position between theellipsoidal shape El as shown in figure 1 and the ellipsoidal shape Es as shown in figure 3depending on the size and hardness of the item(s) to be crimped. Preferably, the first die 11is biased, e.g. by means of a spring, towards an open position as illustrated in figure 1.
    [21] [0021] As is illustrated in figures 4 and 5 the circular movement is preferably limitedsuch that the first die 11 may only rotate a part of circular movement. ln figure 4 a first endposition is shown, in which the opening between two dies is as large as it gets. ln the shownembodiment the dies 11,21 are allowed to move out of contact with each other in order tomaximize the area between the dies 11,21. This is of course easily adapted by a personskilled in the art and a stop may be arranged in any desired position or, if so desired, no stopis arranged such that the first die is free rotate a full lap. Further, only one stop may bearranged to so as to stop the first die 11 from completely passing second die 21, i.e. to stopthe edge 13 of the of the first die 11 before or when it passes the edge 23 of the second die21. ln the shown embodiment the stop action is provided in that the two pivot arms 24, 25 arelocated so as to interact with each other.
    [22] [0022] Hence, in both extreme positions as shown in figures 4 and 5 the pivot arms 24and 25 are in hindering contact with each other, such that they are prevented from furtherrotation in one direction. ln figure 4 the outer end of the first pivot arm 24 abuts the inner endof the second pivot arm 25 in a rest position 26, and in figure 5 the outer end of the secondpivot arm 25 abuts the inner end of the first pivot arm 24 in a rest position 27. The point atwhich further rotation should be prevented may be adjusted by adjusting the distancebetween the pivot arms 24 and 25, and/or by using pivot arms of different width. Interactionbetween the pivot arms 24,25 may be avoided if the pivot arms are positioned at a distancefrom each other that exceeds the full length of the pivot arms 24 and 25, i.e. the lengthbetween the outermost parts of the pivot arms 24 and 25. With such an arrangement the diecould be rotated a full lap or another stop action, independent of the pivot arms, may beprovided.
    [23] [0023] Figure 6 is an enlargement of the crimping tool 10 in the position of figure 4.Three circles C1-C3 have been drawn in the figure to illustrate the geometrical proportions ofthe tool's features. The first circle C1 illustrates the imagined trajectory of the movable pivotpoint A2 of the second pivot arm 25 around the fixed pivot point A1 of said second pivot arm25. The radius Ft1 of the first circle C1 thus equals the pivot length Lp of the pivot arms 24 and25 as illustrated in figure 1. The imagined trajectory of the movable pivot point of the firstpivot arm 24 around the fixed pivot point of said first pivot arm 24 would thus have the sameradius and is not illustrated in figure 6.
    [24] [0024] The second circle C2 has a radius F22 and illustrates the imagined trajectory ofthe edge 13 of the first die 11 around an imaginary centre point P2. The second circle C2coincide with the circular segment 22 of the second die 21. Hence, in addition to showing thetrajectory of the edge point 13 the second circle C2 also illustrates a full circle corresponding to the circular segment 22 of the second die 21. This is natural since the edge 13 of the firstdie 11 is adapted to follow said circular segment 22 with as little play as possible.
    [25] [0025] The third circle G3 illustrates a full circle corresponding to the circular segment12 of the first die 11. The third circle G3 has an imaginary centre point P3 and a radius Fš3.Since the first die 11 is moving in a part circular movement the circular segment 12 will movealong with it, and so will the illustrative third circle G3. However, in correspondence to the factthat the edge 13 of the first die 11 follows the second circle G2, a part of the third circle G3 willalways coincide with the edge 23 of the of the second die 21, and said edge 23 will hencefollow the circular segment 12 of the first die 11 with as little play as possible as the first die11 circles along its trajectory.
    [26] [0026] The edge 13 of the first die 11 is the outermost part of the circular segment 12of the first die 11, and correspondingly the edge 23 of the second die 21 is the outermost partof the circular segment 22 of the second die 21. Hence, the circular segments 12 and 22 areasymmetric with respect to opposed faces of the dies 11 and 21, the edges 13,23 hencebeing the respective outermost part of each die 11,21.
    [27] [0027] lt is to be noted that the circles G1, G2 and G3 are of the same size and thushave the same radiuses, i.e. R1 = Rg = R3. ln other words: the circular segment surfaces12,22 of both the first and second die 11,21 have a radius of curvature that correspond to acircle with a radius equalling the pivot length Lp of the two pivot arms 24 and 25. Further, asis apparent from above and from the figures the dies are so positioned with respect to eachother so that the edge 13 of the first die 11 is adapted to follow the circular segment 22 of thesecond die 21 with as little play as possible and so that the edge 23 of the second die 21 willfollow the circular segment 12 of the first die 11 with as little play as possible, as the first die11 circles along its trajectory.
    [28] [0028] As is apparent from figure 6 the both dies 11,21 are preferably provided withconcave portions 18 and 28, respectively, at the trailing end of the edges 13 and 23,respectively. These concave portions 18 and 28 are arranged to make sure that trailing endof the edges 13 and 23, respectively, are not interfering with the circular segments 22,12,respectively, of the opposite die 11,21. Outside the respective concave portions convexportions 19, 29 adjoin the front ends of the dies 11,21 with the side portions. To facilitatemachining of the dies all machined surfaces, including the circular segments 12,22, theconcave portions 18 and 28, and the convex portions 19, 29 may have constant radiuses.Hence for each portion the radius is constant. The different portions do however not need tohave the radius.
    [29] [0029] Above, the invention has been described with reference to a specificembodiment. It is obvious to a person skilled in the art that other embodiments are possiblewithin the scope of the following claims.
    权利要求:
    Claims (6)
    [1] 1. A crimping tool (10) for crimping items to a substantially ellipsoidal shape, thecrimping tool comprising a first and a second die (11,21) arranged to interact witheach other, each comprising a circular segment surface (12,22), wherein the dies arearranged such that the circular segments (12,22) are opposed each other forming asubstantially ellipsoidal shape (El-Es) between them, characterised in that the firstand the second interacting dies (11,21) are movable with respect to each other, thefirst die (11) being pivotally arranged to move in a part circular movement with respectto the second die (12), substantially without rotating around its own centre, whereinthe circular segment (12) of the first die (11) at a trailing end thereof comprises anedge (13) arranged to follow the circular segment surface (22) of the second die (21 ),thereby continuously closing a first end (31) of the substantially ellipsoidal shapebetween the circular segments (12,22).
    [2] 2. The crimping tool (10) according to claim 1, wherein the second die (12) comprisesan edge (23) arranged to follow the circular segment surface (12) of the first die (11),thereby continuously closing a second end (32) of the substantially ellipsoidal shapebetween the circular segments (12,22).
    [3] 3. The crimping tool (10) according to claim 1 or 2, wherein the second die (21) is fixedon the crimping tool (10) and the first die (11) is pivotally arranged in two pivot arms(24,25) of an equal pivot length (Lp).
    [4] 4. The crimping tool (10) according to claim 3, wherein the circular segment surfaces(12,22) of both the first and second die (11,21) have a radius of curvature thatcorrespond to a circle with radiuses (R2,R3) equalling the pivot length (LP) of the twopivot arms (24,25).
    [5] 5. The crimping tool (10) according to claim to anyone of the preceding claims, whereinthe crimping tool is a hand held tool, two pivoted handles being arranged to provide amutual movement of the dies (11,21).
    [6] 6. The crimping tool (10) according to claim to anyone of the claims 1-4, wherein thecrimping tool is a powered tool, a motor being arranged to move provide a mutual movement of the dies (11,21).
    类似技术:
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    US4226145A|1980-10-07|Wire stripper
    同族专利:
    公开号 | 公开日
    WO2017213583A1|2017-12-14|
    JP2019523974A|2019-08-29|
    US20190214780A1|2019-07-11|
    EP3469665A1|2019-04-17|
    SE539970C2|2018-02-13|
    EP3469665A4|2020-01-22|
    EP3469665B1|2020-12-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US965722A|1909-07-14|1910-07-26|John N Macdonald|Chain-repairing implement.|
    US1882095A|1931-10-22|1932-10-11|Reggitts John|Tool for fastening sash weight cords|
    US2035686A|1934-09-04|1936-03-31|Briegel Theodore|Tool for forming joints in tubing|
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    US3085313A|1953-04-09|1963-04-16|Amp Inc|Method of making an electrical connection|
    FR1172529A|1956-06-19|1959-02-11|Thomson Houston Comp Francaise|Device for crimping conductive parts on an insulated electrical conductor|
    FR1152800A|1956-06-25|1958-02-25|Crimping pliers, especially for crimping detonators|
    FR2033304A1|1969-02-06|1970-12-04|Thomas & Betts Corp|
    DE10216213A1|2002-04-10|2003-10-23|Klauke Gmbh Gustav|Electro-hydraulic pressing device and method for operating the same|
    US7207204B2|2004-02-26|2007-04-24|Boston Scientific Scimed, Inc.|Crimper|
    US20070271990A1|2006-05-26|2007-11-29|Young Thomas M|Shutter-Type Crimper|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1650821A|SE539970C2|2016-06-10|2016-06-10|Self-adjusting crimping tool|SE1650821A| SE539970C2|2016-06-10|2016-06-10|Self-adjusting crimping tool|
    PCT/SE2017/050625| WO2017213583A1|2016-06-10|2017-06-12|Self-adjusting crimping tool|
    JP2018564768A| JP2019523974A|2016-06-10|2017-06-12|Self-adjusting type crimping tool|
    EP17810643.1A| EP3469665B1|2016-06-10|2017-06-12|Self-adjusting crimping tool|
    US16/305,001| US20190214780A1|2016-06-10|2017-06-12|Self-adjusting crimping tool|
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