• 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:
    The invention relates to a method for attaching a component, for example a crimp contact, to the end of a preferably stripped cable, comprising the steps: clamping the cable in an axis offset with respect to the axis of the component and with its end outside the component, and inserting the cable into the component by axially moving the cable and by moving the axis of the stripped end of the cable into the axis of the component, either simultaneously or in successive steps, and then crimping the component onto the fully inserted cable, characterized in that when the cable is inserted in the component keeps the axis of the clamped section of the cable stationary and only the stripped end is displaced at least radially with respect to the axis of the clamped section of the cable in the direction of the component.
    公开号:CH712088B1
    申请号:CH00729/17
    申请日:2015-12-04
    公开日:2020-03-13
    发明作者:Blickenstorfer Willi；Walser Markus；Jost Michael
    申请人:Schleuniger Holding Ag；
    IPC主号:
    专利说明:

    This application claims the priority of European Application No. EP 14 196 417.1, filed on December 4, 2014, the entirety of which is expressly and explicitly incorporated by reference in its entirety and in any part, for all purposes and purposes, here. in the same way as with identical complete inclusion in the subject application.
    The invention relates to a method for attaching a component at the end of a stripped cable, according to the preamble of claim 1, and a method for fully automatic processing of a cable, according to the preamble of claim 7.
    The usual lines that are installed in the automobile (0.35-6 mm <2>) are relatively good-natured, even if they bend a little and tremble a little if they are pressed down with momentum. However, there are no significant problems with the crimping process. Increasingly, however, very thin lines such. B. 0.13 mm <2> installed in the automobile. Even cables with a cable cross-section of 0.05 mm <2> are considered. The problem with the processing of thin wire cross-sections on fully automatic cable processing systems is that as the wire cross-section becomes thinner, the size ratios become less favorable. Cable grippers, crimping stations, crimping tools were originally designed for larger cross-sections. If the cross-section is thinner but the line end protrudes from the line gripper, the problem naturally arises that the thin line end protruding is not as axially stable as a thicker line. If the lowering movement of the gripper is triggered in the usual way, then this occurs as a shock pulse in the lower area of the lowering movement. The end of the cable protruding freely from the gripper must follow this lowering movement and is lowered into the crimping claw. It can happen that individual wires do not get cleanly into the crimp claw or the axial insertion depth varies so much that the required suitability for manufacturing the cables within the required specifications (MFU values) regarding insertion depth in the crimp claw cannot be achieved or can only be achieved to a limited extent. In order to achieve a gentler insertion of the cable end into the crimping claw, a lowering movement of the gripper with the cable end that is as smooth as possible is required.
    WO 2009/017 653 A1 therefore proposed a device and a method for lowering and positioning lines in a processing station of a processing device designed as a crimping station. A servo drive is provided to lower the gripper with the cable end regardless of the crimping press stroke. The crimping tool also has a servo drive for the contact strip feed, which can therefore also be carried out independently of the crimping press. This device enables the individual processes to be started one after the other: exactly push the contact strip into the crimping position in the crimping tool, then swivel the cable gripper with the cable end in the crimp axis, then lower the gripper with the cable using the servo drive via the gearwheel and the rack and pinion drive until the cable end is in the Crimp claw lies, then only release the crimping press and crimp the contact at the end of the cable. All movements can be programmed via the servo axis and can be handled smoothly, but these servo axes are very expensive and complex. This known solution is very well suited for the precise, bumpless handling of thin cables, but it is also very expensive and complex. In addition, the machine performance will be comparatively lower due to the sequential control.
    To overcome these disadvantages, a device for lowering and positioning thin lines in a crimping station is known from WO 2011/004 272 A1, which has a press base frame with a drive that has a press slide along a central axis with a speed profile similar to one Sinus curve moved from top dead center to bottom dead center and back. Furthermore, a central plunger arranged parallel to the central axis is provided, which is attached at one end to a holder via which the plunger is rigidly connected to the press slide of the crimping station, so that press slide and plunger move synchronously in a downward stroke. By means of a separate gripper with a gripper head and at least one pair of gripper jaws, the gripper positions at least one line end of a conductor in a crimp zone of a crimping tool arranged on the press slide, comprising a crimping tool upper part and a crimping tool lower part, in a defined pivoting position for crimping with crimping claws of a contact element. At least one leading lowering device is associated with the central plunger, which acts on the gripper head in a premature manner relative to the downward stroke of the plunger and lowers the speed in a prematurely reduced manner and thereby moves the line end from the pivoting position into a defined crimping position. The disadvantage of this line positioning device is the high design effort, the high manufacturing costs and it is difficult to adjust.
    In order to reduce the design effort and at the same time to enable targeted positioning of even very thin electrical lines in a processing station of a processing device, EP 2 590 275 A1 discloses a line positioning device, the lowering device of which supports a pressure piece that is spring-loaded via at least one spring element has on the cable routing, wherein the at least one spring element is arranged in a tube. The pressure piece is applied directly to the line guide by moving the lowering device vertically to the longitudinal axis of the line received in the line guide, so that the pressure piece comes to rest on an upper side of the line guide. The oscillation of the line routing and the free end of the line protruding from the line routing can thus be prevented both in a direction horizontal to the longitudinal axis of the line and in a direction vertical to the longitudinal axis of the line. However, the lowering prevents further movements of the line to be processed, which could possibly be advantageous or necessary in the processing process, and also the adjustment to the appropriate position and the changeover to other processing parameters is relatively complex.
    [0007] US 4,862,587 A discloses an apparatus and a method for producing a wire harness. A plurality of lines are provided with end pieces at one end, and these lines are then intermittently fed by predetermined lengths along predetermined feed paths, cut to predetermined lengths to provide the remaining lines.
    Further end pieces are attached to the stripped ends of the remaining wires, preferably crimped. In particular, stripped ends are combined in one place and provided with a single, common end piece for a large number of lines. The cable ends are only offset laterally in order to carry out different process steps and to feed the cable ends to the respective processing stations. In addition, the outermost cable ends are continuously clamped in all machining processes and are moved between the machining stations in the clamped state and are also firmly clamped during the attachment of end pieces by means of a crimping process.
    It is therefore the object of the present invention to provide a method with a simple way optimized positioning of the cable end to be processed in the axial as well as in at least one transverse (radial) direction to its longitudinal axis. The positioning should be easily adjustable and adaptable and should have a high degree of flexibility with regard to the adjustable position of the cable end.
    The object is solved by the features of independent claims 1 and 7. Advantageous further developments are set out in the figures and in the dependent claims.
    The invention thus relates to a method for attaching a component, in particular a crimp contact, at the end of a stripped cable, which is improved to achieve the object set forth. Such a method comprises the steps: clamping the cable in an axis offset with respect to the axis of the component and with its end outside the component, inserting the cable into the component by axially moving the cable and moving the axis of the stripped end of the cable into the Axis of the component, either simultaneously or in successive steps, and then crimping the component onto the cable completely inserted into the component.
    The solution to the problem is characterized in that when inserting the cable into the component, the axis of the clamped section of the cable is held stationary and only the stripped end is displaced radially with respect to the axis of the clamped section of the cable in the direction of the component . The stripped end is unclamped and can therefore be moved in the longitudinal direction of the cable. A defined and correct lowering of the cable during insertion into the contact is only possible reliably through the guiding and centering, which is separate from the handling of the cable in large quantities, directly in front of the crimping tool and the contact to be made.
    By the gripper or the pivoting and handling unit for the cable in the cable processing system, the stripped end of the cable only has to be inserted into a centering unit by moving the cable in its axial direction and the centering unit then at least loosely closed around the end of the cable . The mobility of the cable in its longitudinal direction is preferably maintained. Then all further positioning movements of the cable end can be carried out exactly and quickly by the centering unit directly at the cable end and immediately in front of the cable processing station, in particular the crimping station.
    A preferred embodiment variant provides that the stripped end of the cable is moved radially by means of the centering unit in the direction of the axis of the crimp contact.
    In order to ensure the exact and rapid insertion of the cable end in, for example, a crimp contact, the cable is then inserted into the component subsequently or simultaneously with the movement in the direction of the axis of the component in a further variant.
    An optimal connection between the cable end and the component to be attached to it by securely fixing the cable end during the critical connection process is ensured if, according to a preferred embodiment of the method, the stripped end of the cable after insertion into the component and before and during crimping on the component the centering unit is more tightly enclosed, preferably at least temporarily clamped.
    Advantageously, the direction of movement and the working path of the centering unit and its elements, in particular the centering jaws, are controlled, preferably program-controlled. This enables simple and rapid adaptation to the most varied parameters of the process and the components used and the properties of the system.
    This also makes a method for fully automatic processing of a cable feasible, which comprises stripping one end of the cable and attaching a component to the stripped end of the cable, the cable being transported by means of a pivoting unit at least from one stripping station to at least one crimping station .
    According to the invention, the cable is clamped at least during processing in some of the stations in the swivel unit, and the clamped section of the cable is moved exclusively in the axial direction at least during processing in the crimping station and is held fixed radially to the cable axis. Only the stripped end of the cable in this embodiment of the method for insertion into the component is offset radially with respect to the axis of the clamped section of the cable in the direction of the component.
    Further advantages, features and details of the invention will become apparent from the following description in which exemplary embodiments of the invention are described with reference to the drawings. The features mentioned in the claims and in the description can each be essential to the invention individually or in any combination.
    [0021] The list of reference symbols is part of the disclosure. The figures are described coherently and comprehensively. The same reference symbols mean the same components, reference symbols with different indices indicate functionally identical or similar components.
    It shows:
    [0022]<tb> Fig. 1a <SEP> an exploded view of a centering unit for use in a method according to the invention,<tb> Fig. 1b <SEP> a representation of the centering unit, seen from the side of the handling unit for the cable,<tb> Fig. 1c <SEP> a representation of the centering unit, seen from the side of a crimping station,<tb> Fig. 2a to 2e <SEP> a sequence of steps of a method according to the invention using the example of inserting a cable end in a crimp contact as an example of a component to be attached to the cable end,<tb> Fig. 3a <SEP> an exploded view of a further embodiment of a centering unit for use in the method according to the invention,<tb> Fig. 3b <SEP> a representation of the centering unit of FIG. 3a, seen from the side of the handling unit for the cable,<tb> Fig. 3c <SEP> a representation of the centering unit of FIG. 3a, seen from the side of, for example, a crimping station, and<tb> Fig. 3d <SEP> the area of the opening for swiveling in the cable on an enlarged scale.
    Fig. 1 shows a centering unit Z for cable ends to be machined, in particular for inserting the ends of thin stripped cables in crimp contacts, for example, in an exploded view. 1b and 1c show the centering unit Z in the assembled state once from the direction of an immediately adjacent processing station (FIG. 1b) or from the direction from which a movement, handling or transport unit for the cable, for example one Swivel unit with grippers of a cable processing system, the cable K can be guided through the centering unit Z to the processing station (Fig. 1c). A support frame 1 is fastened to a support structure by means of storage blocks 1a, which support blocks 1a define a preferably horizontal axis at the lower end of the support frame 1. The bearing blocks 1a are preferably mounted on a common support for the centering unit Z and the processing station for the cable end arranged immediately behind it, in particular a crimping device with a crimping tool for preferably attaching a contact or plug to the cable end.
    In the support frame 1 two centering jaws 2a, 2b are slidably guided, the preferably concave, in particular V-shaped or triangular cut out cable receptacles of the centering jaws 2a, 2b facing each other. The centering jaws 2a, 2b are fastened or formed on carrier plates 3a, 3b, which carrier plates 3a, 3b are guided in the carrier frame 1 so as to be displaceable in a preferably vertical direction. The displacement of the carrier plates 3a, 3b relative to one another and relative to the carrier frame 1 is accomplished by a linear motor 4a, 4b as the drive device. Both linear motors 4a, 4b are fastened on a common motor holding plate 5, which in turn is preferably connected to the carrier frame 1. The axes 6a, 6b of the linear motors 4a, 4b are coupled to the carrier plates 3a, 3b, for example, via helical toothed gears or in the form of a worm gear.
    These linear motors 4a, 4b are preferably connected to a control unit (not shown), by means of which they can be operated independently of one another and also independently in terms of direction. This control is preferably programmable via a correspondingly programmable control unit, which can also be part of the system control in which the centering unit Z described is integrated. With appropriate programming and control of the linear motors 4a, 4b, the carrier plates 3a, 3b and thus also the centering jaws 2a, 2b can thus be moved up and down independently of one another in the vertical direction. The centering jaws 2a, 2b can thereby be opened or closed and can also be moved together and in parallel in one and the same direction. Depending on the direction of travel and the speed of the motor axes, the centering jaws 2a, 2b can thus be closed, opened or shifted in their "center position". All of these movements can also be programmed overlapping one another so that, for example, the centering can be opened or closed simultaneously with the shifting of the “center position”.
    By a cover plate 7, the carrier plates 3a, 3b are held on the carrier frame 1 in order to ensure the guidance of the carrier plates 3a, 3b together with this and to prevent the ingress of dirt (see also FIG. 1b). If, alternatively, the carrier plates 3a, 3b are already slidably inserted in guides on the carrier frame 1, the cover plate 7 serves exclusively to protect the guides and carrier plates 3a, 3b.
    In the support frame 1, a vertical slot 8 is formed, through which the end of the cable K to be processed are guided and clamped in the course of attaching a component such as a crimp contact to the cable end of the centering jaws 2a, 2b at any height along the slot or can be led. The centering unit Z could, however, be used in all processing steps where a special sequence of in particular guidance - with preservation of the mobility of the cable K in its longitudinal direction - and / or clamping in different positions of the cable axis is required. The cable K is also shown in FIG. 1b.
    The centering unit Z is preferably combined with a crimping device for connecting components to the ends of cables K by a crimping process. The centering unit Z is preferably positioned at a preferably constant distance immediately in front of the crimping tool of the crimping device. In order to ensure the best possible guidance and accuracy when inserting the cable end into the component, such as a crimp contact, the centering unit Z is preferably arranged in the area in front of the crimping device which, when the cable is inserted, i.e. connects directly to the stripped section of an inserted cable K in the process step immediately before crimping on the contact or plug at the cable end.
    As already indicated, the centering unit Z and the crimping device with their crimping tool are preferably mounted on a common carrier in order to reliably and reproducibly maintain the mutual distance and the mutual alignment transverse to the longitudinal axis of the cable. In order nevertheless to make the centering unit Z and its elements and also the crimping tool easily accessible for maintenance, replacement or repair, the centering unit Z will preferably be mounted so that it can pivot relative to the crimping tool. The pivoting is preferably carried out about a horizontal axis on the common carrier, this axis being in the lower region of the carrier frame 1, preferably running in the region of the lower edge of the carrier frame 1. If necessary and advantageous, other positions and orientations of the pivot axis can also be provided, for example laterally and vertically on the carrier frame 1, in order to be able to pivot it away from the crimping device like a door. The attachment of the support frame 1 in a preferably vertical or also horizontal sliding guide for removal by simply pulling it out would be conceivable with a particularly small amount of space while avoiding the space required for the pivoting movement.
    The above-described centering unit Z finds a particularly advantageous application in a cable processing system with at least two processing stations, preferably a plurality of processing stations positioned in at least partially circular arrangement. A centering of the cable ends to be processed is typically required in systems which have at least one stripping station and a crimping device in which contacts or plugs 9 are applied to the stripped cable ends by crimping. The cable K is positioned in these plants by a moving unit for feeding and retracting one end of a cable to be processed to and from the processing stations. In the form of a swivel arm with cable grippers 10 as a clamping device for holding the cable K, this movement unit also takes over the possible swiveling of the end of the cable along the circular arrangement of the processing stations. The crimping device, as explained above, is also preferably integrated as one of the processing stations of this system for cable processing.
    Further, an example of a method according to the invention for attaching, for example, a crimp contact to the end of a stripped cable K will be described with reference to FIGS. 2a to 2e as an example of the advantageous use of the centering unit Z described above. After stripping and assembling the cable end on which a plug or crimp contact 9 is to be fastened, this cable end must be inserted exactly into the crimp contact 9, for example, in order to avoid damage to the cable end and to ensure good fastening and contacting. In this case, the cable K is clamped by the grippers 10 in an axis offset with respect to the axis of the crimp contact 9 and with its end outside the crimp contact 9. The cable end is then moved by axially moving the cable and by moving the axis of the stripped end of the cable K. inserted into the axis of the crimp contact 9, either simultaneously or in successive steps, after which the crimp contact 9 can be crimped onto the fully inserted cable K.
    By means of the centering unit Z explained above, the cable K is inserted axially into the centering unit Z by means of the gripper 10, as shown in FIG. 2a. The cable end finally protrudes through the vertical elongated hole 8 and comes to rest with its longitudinal section directly adjoining the stripped end between the centering jaws 2a, 2b. As shown in Fig. 2b, these centering jaws 2a, 2b are then moved towards each other, but not completely clamped around the cable. The cable end is now guided between the centering jaws 2a, 2b, i.e. exactly guided in height and transverse direction and yet movable while maintaining its mobility in the longitudinal direction of the cable K axially in the direction of the crimp contact 9 (see in particular FIG. 2d in comparison with FIG. 2c).
    So while in Fig. 2a, the centering jaws 2a, 2b are still open and the cable axis and the centering jaw center axis are at the same height, the axis of the crimp contact 9 is located, which coincide with the cable axis in the finished state should, even deeper. In this intermediate position it is ensured that the stripped cable end does not touch the crimp contact 9 anywhere.
    Subsequently, as shown in FIG. 2c, both centering jaws 2a, 2b are preferably lowered in a program-controlled manner, which also lowers the stripped cable end towards the axis of the crimp contact 9, but preferably does not yet reach it completely. The relative distance of the centering jaws 2a, 2b from one another typically remains the same, but could also be closed or opened again if necessary.
    As shown in Fig. 2d, the cable K is pushed in a further step by the grippers 10 or jaws of the swivel unit axially onto the crimp contact 9 towards the axially correct end position. This step can be followed by a complete lowering of the centering jaws 2a, 2b for the complete coaxial insertion of the cable K into the crimp contact 9 if this coincidence of the axes should not already have been achieved in the previous step.
    Finally, the crimp contact 9 is crimped onto the stripped end of the cable K. Depending on requirements, the cable K is only guided by the centering jaws 2a, 2b or can be held securely in position by further program-controlled closing of the centering jaws 2a, 2b even with slight pressure.
    All of these traversing movements, in particular those of the centering jaws 2a, 2b, are predetermined in a program-controlled manner. Likewise, the movements explained above in individual steps can also be combined in any manner or can also be combined to form a continuous movement process.
    With a centering unit Z as shown in FIGS. 1a to 1c, the centering and insertion processes just explained can be optimally designed, but at the beginning there is a relatively large movement of the grippers 10 and thus the movement or handling unit or the swivel unit in the axial direction of the cable K is necessary.
    In order to avoid an excessively large axial movement of the cable, which would also require a large range of motion for the relatively heavy movement unit for feeding and retracting the cable end, the centering unit Z can be developed further as shown in FIGS. 3a to 3d. A recess 1c is machined in the support frame 1 on at least one side. On the side of this recess 1c, which is preferably oriented in a direction that includes a preferably obtuse angle with the direction of travel of the centering jaws 2a, 2b, the support plate 3b for the upper centering jaw 2b is also provided with a recess, or at least in this region of keep any material free. The same also applies to the cover plate 7. The direction of the recess 1c is preferably oriented perpendicularly to the preferably vertical travel direction of the centering jaws 2a, 2b. This allows the cable end to be swiveled in easily into the elongated hole 8 of the centering unit Z by means of preferably a swivel unit of the cable processing system.
    A recess 3c is formed in the carrier plate 3a for the lower centering jaw 2a, the size of which preferably corresponds to the recess 1c of the carrier frame 1. Through this recess 1c, 3c, which is in any case at a height of the support frame 1 between the outermost end positions of the centering jaws 2a, 2b, preferably in the central area between these end positions, the cable K (as in the enlarged section of FIG. 3d is clearly visible) can be pivoted laterally into the area between the open centering jaws 2a, 2b and transversely to the longitudinal axis of the cable K.
    Reference list
    [0041]<tb> 1 <SEP> carrier frame<tb> 1a <SEP> storage blocks for carrier frames<tb> 1c <SEP> recess in the carrier frame<tb> 2a, 2b <SEP> centering jaws<tb> 3a, 3b <SEP> carrier plates for the centering jaws<tb> 3c <SEP> recess in the carrier plate<tb> 4a, 4b <SEP> drives the centering jaws<tb> 5 <SEP> motor mounting plate<tb> 6a, 6b <SEP> axes of the drives<tb> 7 <SEP> cover plate<tb> 8 <SEP> Vertical slot<tb> 9 <SEP> crimp contact<tb> 10 <SEP> grippers for cables<tb> Z <SEP> centering unit<tb> K <SEP> cable
    权利要求:
    Claims (7)
    [1]
    1. A method for attaching a component, for example a crimp contact, to the end of a stripped cable, comprising the steps: clamping the cable in an axis offset with respect to the axis of the component and with its end outside the component, inserting the cable into the component by axial Moving the cable along the longitudinal direction of the cable and by moving the axis of the stripped end of the cable into the axis of the component, either simultaneously or in successive steps, and then crimping the component onto the cable fully inserted into the component, characterized in that when Inserting the cable into the component, the axis of the clamped section of the cable (K) is held stationary and the stripped end alone is unclamped and movable in the longitudinal direction of the cable (K) at least radially with respect to the axis of the clamped section of the cable (K) the component (9) is displaced
    [2]
    2. The method according to claim 1, characterized in that the stripped end of the cable (K) is inserted into a centering unit (Z) by moving the cable in its axial direction and the centering unit (Z) is then at least loosely closed around the end of the cable, the mobility of the cable is maintained in its longitudinal direction.
    [3]
    3. The method according to claim 2, characterized in that the stripped end of the cable (K) by means of the centering unit (Z) is moved radially in the direction of the axis of the component (9).
    [4]
    4. The method according to claim 3, characterized in that the cable (K) is inserted axially into the component subsequent to or simultaneously with the movement in the direction of the axis of the component (9).
    [5]
    5. The method according to claim 4, characterized in that the stripped end of the cable (K) after insertion into the component (9) and before and during crimping of the component (9) by the centering unit (Z), preferably at least temporarily is clamped.
    [6]
    6. The method according to any one of claims 1 to 5, characterized in that the direction of movement and the working path of the centering unit (Z) and their elements, in particular the centering jaws (2a, 2b), is controlled, preferably program-controlled, predetermined.
    [7]
    7. A method for fully automatic processing of a cable, comprising stripping one end of the cable and attaching a component to the stripped end of the cable, the cable being transported by means of a pivoting unit at least from one stripping station to at least one crimping station, characterized in that the cable (K) is clamped in the swivel unit at least during processing in individual of the stations and the clamped section of the cable (K) is moved exclusively in the axial direction at least during processing in the crimping station and is held fixed radially to the cable axis, only the stripped end of the cable (K) for insertion into the component (9) is displaced radially with respect to the axis of the clamped section of the cable (K) in the direction of the component (9).
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    同族专利:
    公开号 | 公开日
    CH712087B1|2019-11-15|
    CN107005015A|2017-08-01|
    WO2016088091A1|2016-06-09|
    KR20170088991A|2017-08-02|
    CN107005015B|2020-02-07|
    CN107005016B|2020-03-03|
    KR20170088990A|2017-08-02|
    JP2017536684A|2017-12-07|
    WO2016088088A1|2016-06-09|
    CN107005016A|2017-08-01|
    JP2017538268A|2017-12-21|
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    法律状态:
    2020-10-15| PCAR| Change of the address of the representative|Free format text: NEW ADDRESS: ROTENBODENSTRASSE 12, 9497 TRIESENBERG (LI) |
    2021-07-30| PL| Patent ceased|
    优先权:
    申请号 | 申请日 | 专利标题
    EP14196417|2014-12-04|
    PCT/IB2015/059345|WO2016088088A1|2014-12-04|2015-12-04|Method for fitting a component to an end of a cable which is stripped of insulation|
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