EP0368073A2 - Procédé et dispositif pour l'ajustage des extrémités dénudées de câbles rounds - Google Patents

Procédé et dispositif pour l'ajustage des extrémités dénudées de câbles rounds Download PDF

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Publication number
EP0368073A2
EP0368073A2 EP89119686A EP89119686A EP0368073A2 EP 0368073 A2 EP0368073 A2 EP 0368073A2 EP 89119686 A EP89119686 A EP 89119686A EP 89119686 A EP89119686 A EP 89119686A EP 0368073 A2 EP0368073 A2 EP 0368073A2
Authority
EP
European Patent Office
Prior art keywords
wires
cable
cable end
color
angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89119686A
Other languages
German (de)
English (en)
Other versions
EP0368073A3 (fr
Inventor
Helmut Kolodziej
Josef Schatterny
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Statomat Spezialmaschinen GmbH
Original Assignee
Statomat Spezialmaschinen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Statomat Spezialmaschinen GmbH filed Critical Statomat Spezialmaschinen GmbH
Publication of EP0368073A2 publication Critical patent/EP0368073A2/fr
Publication of EP0368073A3 publication Critical patent/EP0368073A3/fr
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/28—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49194—Assembling elongated conductors, e.g., splicing, etc.

Definitions

  • the invention relates to a method for aligning the stripped ends of round cables with a plurality of wires to be distinguished by the colors of the insulation during cable assembly, the cable end being rotated by means of mechanical scanning into a first angular position in which the wires are in a specific position regardless of their color take, and after determining the color of one or more wires, the cable end is rotated by one or more times its pitch angle into a second rotational angle position if the predetermined orientation has not yet been reached with the first rotational angle position.
  • the invention further relates to an apparatus for performing such a method.
  • the mechanical touch device responds to differences in the transverse dimensions of the cable and must be converted each time a cable with a different cross section is processed.
  • diameter and position tolerances can lead to functional errors.
  • the invention is therefore based on the object of providing a method and a device of the type mentioned at the outset which, with comparatively little design effort, ensure a substantially faster and at the same time reliable alignment of the cable ends.
  • the above object is achieved in terms of method in that first in a measuring station with a fixed cable end by mechanical scanning only the angular distance from the first rotational angular position is measured, and then the cable end by a translational movement and a rotational movement by the measured angular distance into an alignment station and into the first rotation brought to the angular position and rotated if necessary after color detection.
  • the invention has the advantage that the transition to a specific position of the wires - initially regardless of their color - must be accomplished only once from a random angle of rotation of the cable in all alignment processes, the cable also not from a rotation with continuous Measurement must be stopped more or less imprecisely in the target position, because the measurement of the angular deviation from the target position proposed according to the invention takes place without rotation of the cable and is a self-contained process.
  • This is followed by only defined rotary movements of the cable, namely from the random starting position to the first defined angle of rotation position and, if necessary, step by step further by the pitch angle until the wires of a certain color are in certain positions.
  • a particularly short cycle time is achieved by splitting the entire alignment process into two work processes.
  • the first of these two work processes namely the measurement of the angular deviation from a desired position with the cable end fixed, is also new in itself.
  • the depressions between adjacent wires are scanned instead of the transverse dimensions of the cable.
  • the mechanical touch process is based only on the irregular outline of the stripped cable end, so that it does not matter within certain limits what cross-sections the cable and its wires have. Diameter tolerances can also have no harmful effects. Theoretically, it would also suffice to feel only a single wire or the depression between two adjacent wires. The button intervention in all gaps between the wires offers the greatest possible security for a trouble-free functional sequence.
  • a preferred embodiment of the invention provides that an axial relative movement takes place between the cable end and the sensing element during the scanning. Since the cores are twisted, a feeler, which happens to be placed on the outside of the cores, engages in a gap between the cores during the axial relative movement.
  • a device with a sensing element, a rotatable one, which differentiates the wires of a stripped cable end from their gaps is used Holder of the cable end and at least one color sensor is proposed, which is characterized in that in a first measuring station the sensing element in contact with the wires of the non-rotatable cable end is rotatable about its axis and is coupled to an angle-of-rotation measuring device by means of which the angular distance of the sensed rotational angle position of the cable end is measured from a first defined angle of rotation position, in which the wires assume a certain position regardless of their color, and that an alignment station connected to the measuring station by a conveyor device leading the cable end is arranged, to which the color sensor is attached and the cable end is rotatable by means of the rotatable holder.
  • the sensing element can be rotated as easily as possible, since in a particularly simple embodiment it only derives its rotary movement from the tactile engagement in the spaces between the veins.
  • a further preferred embodiment of the invention provides that during the scanning process both a drive required to actuate the sensor or fingers of the feeler element and a rotary drive required to turn the feeler element back into the starting position can be separated from the feeler element are.
  • the end of the cable must be guided very precisely, and it also depends on the orientation of the color sensor with respect to the wires of the cable, the color of a specific wire is registered.
  • a very precise guidance and mounting of the cable end is achieved in an advantageous embodiment of the invention in that the Conveying device between the measuring station and the aligning station has movable clamps, by means of which the cables can be held in a rotationally fixed manner near the free end of the cable sheath, and that in the aligning station a centering guide element, in which the cables can be rotated, directly next to the free end of the cable sheath can be put on and on the opposite side of the clamp, the rotatable bracket can be clamped on the cable jacket.
  • a fixed color sensor is arranged in such a way that its beam with reference is directed essentially tangentially to a circle circumscribing the wires.
  • the color sensor can also be pivoted and guided in such a way that its beam forms a tangent to the circle circumscribing the veins at least once during a reciprocating pivoting movement.
  • the measuring station shown in FIGS. 1 and 2 and the alignment station shown in FIG. 6 are work stations of a cable assembly machine arranged one behind the other, as used, for. B. is described in DE-OS 36 43 201.
  • the ends of the cables to be processed are clamped in rotation in pliers, which are gradually transported from one work station to the next by a rotating chain.
  • the cable sheath at the cable ends is first removed, so that the wires of the cable are exposed. Then the exposed wires should be z. B. can be cleaned by brush rollers of talc and any dirt that could affect the color detection.
  • the normally twisted wires could also be partially or completely untwisted before the cables with the ends to be processed are transported to the measuring station shown in FIGS. 1 and 2. There it is determined which angle of rotation There are deviations between the random angle of rotation position of the cable end clamped in a pair of tongs 10 (see FIG. 6) and a defined angle of rotation position, in which the wires 12 of a cable 14, denoted by 12, assume a certain position, regardless of the different color of their insulation, e.g. B. the position of FIG. 3, in which the equilateral triangle circumscribing the cores with a three-core cable vertically points upwards.
  • the touch element 16 has a plurality of touch fingers 20, namely three in the example, in order to thus engage in the three groove-shaped spaces between the wires 12 of the three-wire cable 14.
  • the tips of the touch fingers 20 are correspondingly small so that they fit into the spaces.
  • the free ends of the probe fingers 20 not with protruding tips, but with middle recesses, into which a wire 12 nestles when the gripper-shaped probe member 16 contacts the exposed wires 12 from several sides at the same time.
  • the three feeler fingers 20 are designed as angle levers and are rotatably mounted on a support part 22 with a uniform distribution over the circumference in the region of the apex.
  • the latter has a hollow shaft 24 with which it is rotatably mounted in a bearing block 26.
  • An actuating rod 28 extends through the hollow shaft 24, the front end of which is pressed by a compression spring against the radially inwardly directed legs 21 of the probe fingers 20.
  • the torque exerted clockwise on the stylus 20 is smaller than the torque acting in opposite direction, which tension springs 30 acting on the legs 21 exert on the stylus 20.
  • the prestressing by the tension springs 30 therefore means that the touch fingers 20 normally have the tendency, with their free ends according to FIG.
  • the radial pressure is determined by the strength of the tension springs 30 and the compression spring acting on the actuating rod 28 as well as the lever ratios.
  • the pressure can be relatively strong, because due to the still to be described axial relative movement between the cable end 14 and the probe fingers 20 it is ensured that the free ends of the probe fingers 20 which are provided with tips in the example according to FIGS. 3 and 4 also in the gusset-shaped ones outer interstices of the wires 12 slide in when the tips have first been placed under vigorous pressure on the peripheral region of the wires 12 which is radially outermost with respect to the central axis of the cable.
  • the actuating rod 28 is to be pushed outwards.
  • An actuating cylinder 32 which is fixedly connected to the bearing block 26, is used for this purpose, the column rod 34 of which is aligned with the actuating rod 28 and can be pressed against the rear end thereof. As shown in Fig. 1, the piston rod 34 can also be retracted so far that there is an air gap between it and the actuating rod 28, while the touch fingers 20 rest on the wires 12 of the cable.
  • the bearing block 26 is axially guided on a straight guide in the form of two parallel rods 36 with respect to the central axis of the cable end 14 and can in this direction by a power cylinder 40 attached to the machine frame 38 carrying the guide rods 36, the piston rod 42 of which via an elastic coupling 44 is connected to the bearing block 26, can be moved back and forth in a specific axial region.
  • a rotation angle signal transmitter 46 is attached to the bearing block 26, which includes a disk 48 connected to the hollow shaft 24 in a manner fixed against relative rotation, which has a scale-like, e.g. B. is provided magnetically, electrically or optically scannable mark, the pulses generated by the markings of the rotating disc 48 are counted by the associated evaluation circuit when the supporting part of the finger 20, starting from a certain initial position, for. B. in FIG. 3, rotates in one direction or another by a certain angle.
  • the angle of rotation signal transmitter 46 can thus be determined in which direction and by what angle the support member 16 ge from a certain starting position has been rotated.
  • the starting position or zero position for the rotary movement of the supporting part 22 to be measured is determined by a cam 50 (see FIGS. 2 and 5) attached to the hollow shaft 24 in a manner fixed against relative rotation, which cam tends to have the supporting part 22 after each deflection simply because of its own weight to turn back from the zero position.
  • the reset device shown in FIGS. 2 and 5 is also provided, which acts on the cam 50 and always returns it to the vertically downward hanging position. In this position of the cam, the support member 22 is in the starting position, from which the rotary movements are measured, the finger 20 z. B. assume the position shown in Fig. 3.
  • a fork 52 shown in FIG. 5 serves as a reset device, which is guided in a straight line between guide pins 54 on the piston rod of an actuating cylinder 56 in the vertical direction.
  • the fork 52 can only be retracted upwards so that the cam 50 abuts one of the lower ends of the fork 52 on the outside when rotating in each direction.
  • the rotational movement of the support part 22 and the cam 50 is thereby limited to approximately 120 ° to 150 ° in each direction.
  • the fork 52 is prevented from engaging over the cam 50 while it is in a position deviating from the starting position by 180 °. Even if the cam 50 is in the diagonal upward-pointing extreme position shown in dash-dotted lines in FIG.
  • the fork 52 traveling downward through the actuating cylinder 56 can push it back into the starting position.
  • the fork retracted into the upper position according to FIG. 5 does not in the least hinder the rotary movements of the supporting part 22 within the predetermined limits. This applies equally to the piston rod 34 of the actuating cylinder 32 that is completely retracted according to FIG. 1.
  • the feeler element 16 In the starting position, the feeler element 16 is in the position according to FIG. 2.
  • the actuating cylinder 32 presses with its piston rod 34 against the actuation rod 28, so that the feeler fingers 20 are spread apart and a transport pliers have a cable end 14 horizontally between the feeler fingers 20 in one central position in which the central axis of the cable is aligned with the hollow shaft 24.
  • the fork 52 may already have been retracted upward into the position shown in FIG. 2 by the actuating cylinder 56, since the weight of the cam 50 ensures that the three feeler fingers 20 initially position themselves on the circumference according to FIG. 3 maintained.
  • the angle of rotation signal transmitter 46 would register a rotation of the sensing element 16 and thus a deviation of the position of the wires from the desired position according to FIG. 3 by 30 °.
  • the entire unit of the feeler element 16 can be rotated very easily since it is not connected to any drive, it could happen that the tips of the feeler fingers 20 touch the radially outermost points of the wires with respect to the central axis of the cable and not into the penetrate gusset-shaped outer spaces between the wires 12.
  • the intended axial back and forth movement of the sensing element 16 by means of the power cylinder 40 helps.
  • the movement with reference to FIG. 1 to the right begins immediately after the piston rod 34 of the actuating cylinder 32 has been withdrawn, that is to say the tips of the touch fingers 20 directly next to it the ends of the cable sheath 18 have touched the wires 12.
  • the displacement of the bearing block 26 together with the sensing element 16 can, for. B.
  • the evaluation circuit of the rotary angle signal transmitter 46 counts, starting from the initial position according to FIG. 3, the angular steps of the rotary movement in both directions of rotation and at the end registers the angular deviation of the random position of the wires according to FIG. 4 from the desired position according to FIG. 3.
  • the probe fingers 20 are spread apart again by the actuating cylinder 32 moving with its piston rod 34 against the actuating rod 28.
  • the actuating cylinder 56 can move the fork 52 downward and thereby turn the cam 50 and the entire touch element 16 back into the starting position according to FIG. 3.
  • the rotation path can be measured by means of the rotation angle signal transmitter 46 and, as a check, this measurement can be compared with that which was carried out when the probe fingers 20 were deflected in the circumferential direction by the wires 12.
  • the angle measured in the measuring station according to FIGS. 1 and 2 is reported to the control device of the alignment station according to FIG. 6 described below.
  • the pliers arms, denoted by 62, are rotationally fixed on the end of a shaft 64 which can be driven in rotation.
  • the two shafts 64 are guided in glasses 66 near their outer ends.
  • the rotary drive of the two shafts 64 is carried out by a pneumatic rotary unit 68, which is rotatably supported on the machine frame 38 and can be rotated about an axis 72 together with the shafts 64 and the pliers 60 by a motor, not shown, via a drive belt 70, which axis corresponds to the central axis of the cable end 14 is aligned after it has been transported by the transport tongs 10 into the alignment station.
  • the axis of rotation 72 is also the central axis of the jaws of the pliers 60 in the closed state. 8, the pliers arms 62 are each pivoted open by approximately 90 °, so that the cable end 14 can be transported in a horizontal movement into the central position in the alignment station by means of the transport pliers 10.
  • the transport tongs 10 hold the cable ends 14 at a certain distance from the end of the cable sheath 18. This distance results from the necessities of the processing operations. On the other hand, this results in a certain mobility and positional inaccuracy of the free end of the cable in the area where a color sensor designated 74 in FIG. 6 directs its beam onto one of the relatively thin wires 12.
  • a centering device 76 which, in the activated state, which is shown in FIG. 7, acts directly on the end of the cable sheath 18 and centers the cable there with respect to the axis of rotation 72 of the rotatable holder 58, but in centered to stood the rotation of the cable 14 about the axis 72.
  • the centering device 76 consists of an upper centering jaw 78 and a lower centering jaw 80, each of which is provided with a central, V-shaped recess which, when the centering jaws 78 and 80 move together, from the open position according to FIG. 6 into the closed position according to FIG 7 Guide the cable 14 to the axis 72.
  • the lower centering jaw 80 is fork-shaped in side view, so that the upper centering jaw 78 can penetrate between the legs of the fork when moving together.
  • Two rollers 82 are mounted on each centering jaw 78, 80 on each side.
  • a centering device corresponding to the centering device 76 can also be present at the measuring station according to FIGS. 1 and 2 in order to center the cable directly at the end of the cable sheath during the scanning by means of the finger 20.
  • the rollers 82 are missing so that the cable end is better held against rotation.
  • the transport tongs 10 known from DE-OS 36 43 201 are used, which are each held in the clamping position by spring force and by a plunger 84 with a roller 86 at the free end, which can be pressed against a lever on the clamping tongs are open.
  • the alignment station described above works as follows:
  • the tongs 60 of the rotatable holder 58 take the wide open one shown in FIG. Position which allows the cable end to be brought into alignment with the axis of rotation 72.
  • the centering device 76 is also initially in the open position according to FIG. 6.
  • the tappet 84 for opening the transport tongs 10 in the alignment station is retracted upwards into its inactive position.
  • the centering device 76 also closes, so that the cable is centered at the end of the cable sheath according to FIG. 7 by the rollers 82.
  • the plunger 84 is then moved downward by the sequence control, which controls the movements of the described parts in the alignment station, and the transport tongs 10 are thereby opened.
  • the rotatable holder 58 consisting of the pliers 60, its two drive shafts 64 and their pneumatic rotating unit 68, is rotated with respect to the axis of rotation 72 by the angle that was previously in the measuring station according to FIG. 1 and 2 has been measured as the angular deviation from the nominal position of the wire arrangement.
  • the wires of the cable 14 from their random initial position, for. B. 4, in the desired predetermined position, for. B. according to Fig. 3 rotated.
  • This rotary movement can take place very quickly, since the angle through which rotation is to be known is known from the previous measurement, and the cable is held in a rotationally fixed manner by the pliers 60 and is precisely centered by the centering device 76.
  • the color sensor 74 which combines the transmitter and receiver in the exemplary embodiment, according to the arrow 88 shown in Fig. 3, a light beam on the top wire 12 and from this partially to the color sensor 74 reflected back.
  • the color sensor can therefore determine whether a wire of a certain color, e.g. B. a wire with blue insulation, as intended for further cable processing, is in the uppermost position. If this is the case straight away, the transport tongs 10 are closed by pulling the plunger 84 upward, the tongs 60 and the centering device 76 open again, and the cable can then be transported on to the next processing station of the cable assembly machine.
  • the first color recognition process reveals that the wire of certain color, e.g. B. the blue wire, not yet there, but in one of the two lower wire positions.
  • the color sensor 74 detects one of the two other occurring core colors in the uppermost position.
  • the differently colored wires in a certain order direction around the middle of the cable can be deduced from the color recognized in the uppermost wire position whether the z. B. searched blue wire with reference to Fig. 3 is located on the bottom right or left.
  • a single further rotation through 120 ° to the right or left is sufficient to bring the blue wire into the predetermined top wire position. This rotation by a very specific angle can also be carried out very quickly and precisely by the belt drive 70.
  • the aligned cable end is again handed over to the transport tongs 10 and the further transport to the next work station.
  • the color detection by color sensor 74 is due to external influences, such as. B. talc adhering to the wires or positional tolerances of the wires within the cable sheath 18, which lead to the fact that the color sensor does not receive light reflected from a single wire only.
  • external influences such as. B. talc adhering to the wires or positional tolerances of the wires within the cable sheath 18, which lead to the fact that the color sensor does not receive light reflected from a single wire only.
  • the color detection method described last can be carried out with a tangentially oriented, fixed color sensor and rotation of the cable about its axis.
  • the fulcrum of the color sensor is expediently located on a center line or symmetry line extending radially with respect to the cable axis between two wires, so that the color sensor is in its central position occupies one of those positions in which the touch fingers 20 are shown in FIG. 3.
  • the colors of two wires can thus be recognized with a single swivel movement of the color sensor 74, because at the start of a swivel movement from an extreme inclined position a first wire enters the light beam, and at the end of this swivel movement a second wire emerges last from the light beam . Only the light received at the beginning and at the end of this swiveling movement is evaluated for color recognition.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Processing Of Terminals (AREA)
EP19890119686 1988-11-07 1989-10-24 Procédé et dispositif pour l'ajustage des extrémités dénudées de câbles rounds Withdrawn EP0368073A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3837710A DE3837710A1 (de) 1988-11-07 1988-11-07 Verfahren und vorrichtung zum ausrichten der abgemantelten enden von rundkabeln
DE3837710 1988-11-07

Publications (2)

Publication Number Publication Date
EP0368073A2 true EP0368073A2 (fr) 1990-05-16
EP0368073A3 EP0368073A3 (fr) 1990-11-14

Family

ID=6366639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890119686 Withdrawn EP0368073A3 (fr) 1988-11-07 1989-10-24 Procédé et dispositif pour l'ajustage des extrémités dénudées de câbles rounds

Country Status (6)

Country Link
US (1) US5040940A (fr)
EP (1) EP0368073A3 (fr)
JP (1) JPH02246716A (fr)
CA (1) CA2002250A1 (fr)
DE (1) DE3837710A1 (fr)
NO (1) NO894409L (fr)

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AU2004265021B2 (en) * 2003-08-18 2010-05-27 H. Lundbeck A/S Succinate and malonate salt of trans-4-(IR,3S)-6-chloro-3-phenylindan-1-yl)-1,2,2-trimethylpiperazine and the use as a medicament
DE102014005242B3 (de) * 2014-04-08 2015-07-09 SLE quality engineering GmbH & Co. KG Verfahren und Vorrichtung zum Bestimmen einer Winkellage von Einzelleitungen an einer vorbestimmten Querschnittsstelle in einer mehradrigen Mantelleitung
WO2020249574A1 (fr) * 2019-06-14 2020-12-17 Metzner Maschinenbau Gmbh Procédé, dispositif et système pour la fabrication d'un câble électrique

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EP0368073A3 (fr) 1990-11-14
JPH02246716A (ja) 1990-10-02
US5040940A (en) 1991-08-20
CA2002250A1 (fr) 1990-05-07
DE3837710A1 (de) 1990-05-10
NO894409D0 (no) 1989-11-06
NO894409L (no) 1990-05-08

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