EP3246463A1 - Lay positioning unit, twisting device and method of operation - Google Patents

Abstract

The invention relates to a impact positioning unit (4, 4a, 4, 4b) for a twisting device (1) for displaceable arrangement between a twisting unit (2) and a de-twisting unit (3). The impact positioning unit (4, 4a, 4, 4b) has at least one spacing unit (5) which can be extended and retracted perpendicularly to a direction of travel (V) and which is controllable such that the spacing unit (5) is positioned at a predetermined distance from the untwisting unit (3 ) while the twisting unit (2) continues to twist. Furthermore, the invention relates to a twisting device (1) and a method for operating the same. The invention is particularly advantageously suitable for twisting more than two individual wires.

Description

The invention relates to a impact positioning unit for a twisting device, wherein the impact positioning unit has a spacing unit that can be extended perpendicularly to a travel direction. The invention also relates to a twisting device, comprising a striking positioning unit movable between a twisting unit and a twisting out unit. The invention further relates to a method for operating a twisting device. The invention is particularly advantageous for twisting together more than two individual lines.

EP 2 777 053 B1 discloses a twisting device for twisting electrical or optical conduits such as wires, cables, bundles of cables, optical fibers, etc., in particular a cable twisting device, having a base and a first relatively rotatable twisting head adapted to twist the wires to be twisted at their first ends to grip, wherein the twisting device comprises a second, rotatable relative to the base twisting head, which is arranged opposite the first twisting head and is formed to grip the lines to be twisted at their second, the first ends opposite ends, and that the second twisting head is rotatable in the opposite sense to the first twisting head.

EP 0 889 486 B1 discloses a twisted-wire production unit including parallel arrays of a plurality of pairs of opposed cable terminals, the terminals on one side for clamping one end of a pair of fixed-length cables, and the terminals on the other side for clamping the other end of the pair of cables, each cable pair extending in a substantially longitudinal direction between a corresponding pair of cable clamps, one cable clamp of each pair being driven to rotate by one drive unit and the other cable clamp of each pair being fixed ., thereby imparting relatively twisting rotational motion to both cables, further comprising: a forward movement mechanism effective for intermittently advancing each respective pair of cable clamps in a direction transverse to the substantially one Longitudinal direction is provided.

EP 0 917 746 B1 discloses methods for twisting at least two individual lines with the following steps: clamping the one line ends of individual lines cut to a specific length into a separate entangling tension receptacle which is rotatable essentially parallel to a twisting axis; Clamping the other line ends of the individual lines in each separate Verdrillspannaufnahmen which are arranged rotatably together about the Verdrillachse; Arranging a drillship between the substantially strained lines; and rotating the Verdrillspannaufnahmen together around the Verdrillachse and co-rotating the Entdrillspannaufnahmen each about the line axis of the respective individual lines.

DE 101 07 670 B4 discloses methods of twisting at least two single wires to a twisted harness, comprising the steps of: a) passing the one end of a single lead through associated tension clamps in a cable support head; b) clamping the ends of leads passed through the tension clamps in respective jaws in a twist head; c) Subjecting the tension clamps in the cable holding head with a holding pressure that allows the individual cables to pass through the tensioning clamps under friction, so that the individual cables are constantly pulled tightly; d) moving the twisting head while maintaining the holding pressure until the individual cables are stretched to the desired length e) twisting the twisting head during step d) by a predetermined number of revolutions, f) subjecting the tensioning clamps in the cable holding head to a clamping pressure which is higher than the holding pressure, so that secure clamping of the individual lei g) twisting the now clamped on both sides single lines to a twisted harness.

It is the object of the present invention to at least partially overcome the disadvantages of the prior art and, in particular, to provide an improved possibility for producing a twisted cable with two or in particular more than two individual lines.

This object is achieved according to the features of the independent claims. Preferred embodiments are in particular the dependent claims.

The object is achieved by a unit (hereinafter referred to as "impact positioning unit" without restricting generality) for a twisting device, wherein the impact positioning unit has at least one or more spacing units that can be moved in and out perpendicular to a travel direction. For multiple spacing units, these may be angularly offset in a circumferential direction to the travel direction and in an extended (i.e., elongated) state.

When using a plurality of spacing units, a single line is spatially delimited by in each case two adjacent spacing units. The individual lines are thereby separated from each other by means of at least one spacing unit. Each individual line is thus - when viewed in the direction of travel - assigned a respective space area or sector alone. Touching the spacing units prevents individual lines from passing through gaps between the spacing units into other sectors. The individual lines thus remain separated. The approximation of the spacing units is thus at least such that no single line can slip through between them. The number of individual lines kept separate from each other is basically not limited. As a result of the impact positioning unit, cable flashovers during twisting of a plurality of individual lines can be successfully prevented, in particular also of three or more individual lines. The impact positioning unit is advantageous used if the individual lines are turned back individually as such.

The individual lines can be electrical and / or optical lines. The individual cables can have one core or several separate wires.

The twisting device is intended to twist several individual lines to form a cable. For this purpose, the still untwisted individual wires are held between two end units, one of which (the so-called "twisting unit") twisting the individual wires together. The other end unit can either hold the individual lines firmly or (as so-called "unthreading unit") individually rotate in the other direction to prevent twisting of the individual lines as such. The direction of travel runs in the direction between the two end units. The individual lines or the twisted section of the cable run along the direction of travel, so that the twisting device can also move along the twisted or untwisted individual lines.

By n spacing units a maximum of n + 1 individual lines can be separated from each other. It is a further development that the spacing units can be individually extended (and retracted or contracted) because a particularly simple spatial separation of less than the n + 1 possible individual lines can be achieved. Also, the introduction of the individual lines into the impact positioning unit can thus be facilitated, for example by the spacing units being successively actuated to sequentially enclose the individual lines in their respective sectors.

That the spacing units are extendable perpendicular to the travel direction may include moving toward each other on extension with a component of motion perpendicular to the travel direction until they touch (i.e., until the spacing units each contact at least one other spacing unit). In particular, they move from the outside into an area in which the untwisted individual lines are located.

It is a further development that the several spacing units move towards one another in a star shape when they are extended. They can meet in particular in a common central area. The individual sectors or departments can then be pie-shaped when viewed in the direction of travel. When viewed in a cylindrical coordinate system, this can also be described such that the impact positioning unit can be moved along a z-axis or longitudinal axis, the spacing units are arranged angularly offset relative to one another in the azimuthal direction or φ-direction and can be directed against the radial direction or in the radial direction. Extend the axle.

It is a further development that at least two adjacently arranged spacing units touch each other in the extended state. This makes it particularly easy to contact the spacer units.

It is an embodiment that the spacing units comprise extendable pins. As a result, the spacing units can be constructed particularly simply.

It is a development that at least one of the pins is designed to be removable or replaceable, since the Schlagpositioniereinheit can be adapted so particularly varied in product requirements.

It is still an embodiment that the spacing units are designed to fit flat on their contact surfaces. This makes it particularly reliable to prevent the slipping of individual cables. By flat mating contact surfaces are meant in particular contact surfaces that are shaped so that they form a surface contact and not, for example. only one or more point contacts. In particular, mating contact surfaces have the same shape, e.g. each a plane shape.

It is also an embodiment that a pin of a first spacing unit contacts with its end face a pin of a second spacing unit on its lateral surface. This makes it particularly easy to produce a surface contact. In particular, pins of a plurality of first spacing units can contact with their end faces the same pin of the second spacing unit on its lateral surface. In particular, the pin of the second spacing unit can stand vertically while the pin of the at least one first spacing unit is horizontally aligned.

In particular, the end face of the pin of the first spacing unit in the contact area may have a shape corresponding to the lateral face of the pin of the second spacing unit. Thus, the lateral surface may be circular cylindrical and correspond to the shape of the end face of a sectional surface of a circular cylindrical pin with the lateral surface. It is a development that at least one pin (eg a first spacing unit) with its free end or with its tip in a recess of another pin (eg a second, in particular vertically upstanding spacing unit) is retractable, if the associated (s) Spacing unit (s) are in an extended state.

It is furthermore an embodiment that the impact positioning unit has at least two spacing units. This allows two or three individual lines to be kept separate from each other. It is particularly advantageous that the Schlagpositioniereinheit has at least three spacing units. Thus, two, three or four individual lines can be kept spatially separate.

It is also an embodiment that adjacently arranged spacing units are angularly offset from one another by 90 °. This angular offset allows a particularly simple and robust Schlagpositioniereinheit, especially for a maximum of four separate from each other to be kept separate lines.

It is also an embodiment that adjacently arranged spacing units are angularly offset from one another by less than 90 °. This makes it possible to provide a particularly compact impact positioning unit, in particular also for more than four individual cables to be kept separate from one another.

The object is also achieved by a twisting device, comprising one between two end units, in particular between a twisting unit and a de-twisting unit, movable Schlagpositioniereinheit, which may be designed in particular as described above. The twisting device can be formed analogous to the Schlagpositioniereinheit and gives the same advantages.

It is a further development that the Schlagpositioniereinheit either from a range between the two end units removable and there is einbringbar. As a result, the impact positioning unit can be removed, for example, for easier clamping of the untwisted individual cables.

The object is also achieved by a method for operating a twisting device as described above, in which the spacing unit is retracted at a distance of the Schlagpositioniereinheit to the de-twisting unit of a maximum of 30 mm or the lines to be twisted are moved out of the travel path of Schlagpositioniereinheit. In the simplest case, the spacing unit is retracted so that it no longer has any contact with the individual lines. In the alternative case, on the other hand, the individual lines to be twisted are moved out of the travel position of the impact positioning unit, for example by the twisting unit and / or the de-twisting unit together with the clamped individual lines can be actuated.

Thereby the advantage is achieved that during a twisting operation an untwisted length of the cable can be reduced, so that the impact positioning unit is no longer located between the individual lines and the de-twisting unit at the end of the twisting operation. Ideally, the spacing unit can be moved in under control or the individual lines can be controlled from the travel path of the Spacing unit to be moved out. In this case, the control can be carried out such that a predetermined distance of the spacing unit to the untwisting unit is as small as possible, so that the untwisted length is ideally less than 30 mm. Accordingly, the control of the Schlagpositioniereinheit in a distance of, for example, about 5 to 40 mm, preferably about 10 to 30 mm, distance to the de-twisting unit. Vehicle manufacturers often require an untwisted length of less than 30 mm for data lines, so that ideally the triggering of the impact positioning unit can take place at a maximum distance of 30 mm from the de-twisting unit.

A particularly advantageous development of the method provides that, at the beginning of the twisting operation, the impact positioning unit with retracted spacing unit or retracted spacing units is brought to a non-twisted section of a cable having at least two individual leads and then the spacing units are extended between the individual leads such that each of the individual leads is separated from the other individual lines by means of the spacing units. The method can be formed analogously to the twisting device and the Schlagpositioniereinheit and gives the same advantages. In particular, can be achieved so that the Schlagpositioniereinheit does not interfere with the line assemblies.

Moving the Schlagpositioniereinheit to the non-twisted portion of the cable, moving the Schlagpositioniereinheit towards the cable or the individual lines and / or moving the cable or the individual lines in the direction of the impact positioning unit (eg, manual insertion into the impact positioning unit).

It is an embodiment that the spacing units are extended before twisting the individual lines. Even so, it can be supported that the Schlagpositioniereinheit does not interfere with the line assemblies.

It is yet a further embodiment that the one or more spacing units are retracted or retracted after a finished twisting of the individual lines and before ejection of the individual lines. This gives the advantage that the twisted cable is free and can be ejected better.

Fig.1

zeigt in Draufsicht eine Verdrilleinrichtung mit einer Schlagpositioniereinheit;

Fig.2

zeigt eine Schlagpositioniereinheit gemäß einem ersten Ausführungsbeispiel in einer Schrägansicht mit eingefahrenen Beabstandungseinheiten;

Fig.3

zeigt die Schlagpositioniereinheit gemäß dem ersten Ausführungsbeispiel mit den eingefahrenen Beabstandungseinheiten in einer Sicht in eine Verfahrrichtung;

Fig.4

zeigt die Schlagpositioniereinheit gemäß dem ersten Ausführungsbeispiel in einer Schrägansicht mit einer ausgefahrenen Beabstandungseinheit und einem Kabel mit zwei Einzelleitungen;

Fig.5

zeigt die Schlagpositioniereinheit gemäß dem ersten Ausführungsbeispiel in einer Schrägansicht mit ausgefahrenen Beabstandungseinheiten und einem Kabel mit vier Einzelleitungen;

Fig.6

zeigt in einer zu Fig.3 analogen Ansicht eine Schlagpositioniereinheit gemäß einem zweiten Ausführungsbeispiel; und

Fig.7

zeigt die Schlagpositioniereinheit gemäß dem zweiten Ausführungsbeispiel in einer zu Fig.5 analogen Ansicht.

The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following schematic description of an embodiment which will be described in detail in conjunction with the drawings.

Fig.1

shows in plan view a twisting device with a Schlagpositioniereinheit;

Fig.2

shows a Schlagpositioniereinheit according to a first embodiment in an oblique view with retracted spacing units;

Figure 3

shows the Schlagpositioniereinheit according to the first embodiment with the retracted spacing units in a view in a direction of travel;

Figure 4

shows the Schlagpositioniereinheit according to the first embodiment in an oblique view with an extended spacing unit and a cable with two individual lines;

Figure 5

shows the Schlagpositioniereinheit according to the first embodiment in an oblique view with extended spacing units and a cable with four individual lines;

Figure 6

shows in one too Figure 3 analog view of a Schlagpositioniereinheit according to a second embodiment; and

Figure 7

shows the Schlagpositioniereinheit according to the second embodiment in one Figure 5 analog view.

Fig.1 shows a twisting device 1, comprising a movable between a twisting unit 2 and a de-twisting unit 3 in a direction of travel V Schlagpositioniereinheit 4. In the twisting device 1 individual lines L1, L2 are clamped individually and can by rotation of the twisting unit 2, as indicated by the associated arrow to a common axis to a cable K are twisted. The twist extends to the impact positioning unit 4, which further prevents further twisting. Between the Schlagpositioniereinheit 4 and the Entdrillinheit 3, the individual lines L1, L2 are individually guided longitudinally. By longitudinal displacement of the Schlagpositioniereinheit 4 of the twisting unit 2 in the direction of the untwisting unit 3 with rotating twisting unit 2, the individual lines L1, L2 with targeted set, possibly also changeable during twisting, impact angle, etc. are twisted. The untwisting unit 3 turns the individual wires L1, L2 as such in the opposite direction to prevent their rotation about its own longitudinal axis, as indicated by the associated two arrows. The twisting unit 2 and / or the de-twisting unit 3 can be moved in the direction of travel V in order to tension or to relax the individual lines L1, L2.

Fig.2 shows a possible embodiment of the Schlagpositioniereinheit 4 according to a first embodiment 4a. Figure 3 shows the impact positioning unit 4a in a view along the direction of travel V.

The impact positioning unit 4a has three spacing units 5. The spacing units 5 have a respective pin-like plunger 6, which is selectively extendable and retractable by means of a drive 7, as indicated by the double arrows. The drive may comprise a coil which moves the plunger 6 by means of magnetic force. The plunger 6 can then take in particular only a retracted end position or an extended end position. Alternatively, the drive 7 may be an electric motor so that the plunger 6 is then e.g. is continuously or stepwise displaced. The spacing units 5 or their plungers 6 can be extended and retracted individually and / or in groups.

The spacing units 5 are extendable perpendicular to the direction of travel V (eg in FIG Figure 3 in the image plane) and in a circumferential direction A about the extension of the direction of travel V arranged angularly offset. The angular offset between adjacent spacing units 5 is here 90 °. The plungers 6 can thereby be moved towards each other in a star shape and touch each other in a central area, as described below Figure 5 shown.

Figure 4 shows the Schlagpositioniereinheit 4a in an oblique view, now the plunger 6 of the central spacing unit 5 is extended vertically upwards, between the two individual lines L1 and L2 of the cable K. The plungers 6 of the two lateral, horizontally oriented spacing units 5 are retracted. Thus, only the plunger 6 of the central spacing unit 5 serves to separate the two individual lines L1 and L2. Namely, the single line L1 is held in a semispherical sector I, and the other single line L2 is held in a semispherical sector II.

Figure 5 shows the Schlagpositioniereinheit 4a with all three spacing units 5 and the plungers 6 extended. As a result, four individual lines L1, L2, L3 and L4 (of which the first individual line L1 is shown covered by a third individual line L3) are spatially separated from one another, also in four 90 ° sectors or quarter sectors I, II, III and IV ,

The plungers 6 touch in their extended state, in such a way that the plunger 6 of the two lateral spacing units 5 symmetrically laterally contact the plunger 6 of the central spacing unit 5. The plunger 6 of the central spacing unit 5 protrudes upward over the lateral plungers 6, so that a cross is formed by the plungers 6.

The plunger 6 of the two lateral spacing units 5 thus contact the lateral surface 9 of the plunger 6 of the central spacing unit 5 with their end faces 8 (see also FIG Fig.2 and Fig.3 ). The end faces 8 have a cylindrical Surface corresponding to the shape of the lateral surface 9, so that the contact can be formed through the entire end face 8.

The division of the four individual lines L1, L2, L3 and L4 to the respective sectors I to IV can, for example, be carried out so that initially the plunger 6 of the central spacing unit 5 is vertically extended between the individual lines L1 and L4 on the one hand and the individual lines L2 and L3 on the other hand , Subsequently, the plungers 6 of the two lateral spacing units 5 are extended horizontally between the individual lines L2 and L3.

This extension of the plunger 6 in order to keep the individual lines L1 to L4 separated, can be carried out in particular after a clamping of the still before individual lines L1 to L4, but before the start of twisting. For this purpose, the impact positioning unit 4 can be approached by motor or manually to the individual lines L1 to L4.

Retraction or retraction of the plungers 6 to reconnect the individual leads L1 to L4 may be accomplished e.g. during twisting or after twisting.

Figure 6 shows in one too Figure 3 analog view of a Schlagpositioniereinheit 4 according to a second embodiment 4b. Figure 7 shows the impact positioning unit 4, 4b in one Figure 5 analog view.

In the impact positioning unit 4, 4b, the adjacently arranged spacing units 5 are now angularly offset from one another by less than 90 ° about a circumferential direction A. Correspondingly, sectors I and II are smaller than sectors III and IV. Also, the end surfaces 10 of the plunger 6 of the two outer or lateral spacing units 5 are chamfered corresponding to the longitudinal extension of the plunger 6.

Of course, the present invention is not limited to the embodiment shown.

Thus, more than three spacing units 5 may be present, in particular if they are angularly offset from one another by less than 90 ° about a circumferential direction A.

Generally, "on", "an", etc. may be taken to mean a singular or a plurality, in particular in the sense of "at least one" or "one or more" etc., unless this is explicitly excluded, e.g. by the expression "exactly one", etc.

Also, a number may include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.

LIST OF REFERENCE NUMBERS

1

twisting

2

twisting

3

untwisting

4

Schlagpositioniereinheit

4a

Schlagpositioniereinheit

4b

Schlagpositioniereinheit

5

Beabstandungseinheiten

6

tappet

7

drive

8th

face

9

lateral surface

10

face

I-IV

sectors

A

circumferential direction

K

electric wire

L1-L4

Single lines

V

traversing

Claims (13)

Impact positioning unit (4, 4a, 4, 4b) for a twisting device (1) for displaceable arrangement between a twisting unit (2) and a de-twisting unit (3), wherein - The Schlagpositioniereinheit (4, 4a, 4, 4b) at least one perpendicular to a direction of travel (V) extendable and retractable spacing unit (5), and - The Schlagpositioniereinheit (4, 4a, 4, 4b) is controlled such that the spacing unit (5) at a predetermined distance to the untwisting unit (3) retracts while the twisting unit (2) continues to twist finished. Impact positioning unit (4, 4a, 4, 4b) according to claim 1, wherein a plurality of spacing units (5) are provided, the spacing units (5) are angularly offset in a circumferential direction (A) from the traveling direction (V), and the spacing units (5) are in to an extended condition. Impact positioning unit (4, 4a, 4, 4b) according to claim 1 or 2, wherein the spacing units (5) comprise extendable pins (6). Impact positioning unit (4, 4a, 4, 4b) according to one of the preceding claims, wherein the spacing units (5) are formed on their contact surfaces (8; Impact positioning unit (4, 4a, 4, 4b) according to claims 3 and 4, wherein a pin (6) of a first spacing unit (5) has with its end face (8; 10) a pin (6) of a second spacing unit (5) at its end Coated surface (9) contacted and the end face (8; 10) has a the lateral surface (9) in the contact area corresponding shape. Impact positioning unit (4, 4a, 4, 4b) according to one of the preceding claims, wherein the impact positioning unit (4, 4a, 4, 4b) has at least two spacing units (5). Impact positioning unit (4, 4a) according to any one of the preceding claims, wherein adjacently arranged spacing units (5) are angularly offset by 90 ° to each other. Impact positioning unit (4, 4b) according to one of claims 1 to 6, wherein adjacently arranged spacing units (5) are angularly offset by less than 90 ° to each other. A twisting device (1), comprising a twisting unit (2) and a de - twisting unit (3), between which a striking positioning unit (4, 4a, 4, 4b) is arranged, the striking positioning unit (4, 4a, 4b) being movable in a travel direction (V) 4b) has at least one spacing unit (5) extending perpendicularly to the travel direction (V), which is controllable in such a way that the spacing unit (5) enters at a predetermined distance from the untwisting unit (3), while the twisting unit (2) continues to twist finished. Twisting device (1) according to claim 9, that the spacing unit (5) at a distance of a maximum of 30 mm to the untwisting unit (3) retracts. Method for operating a twisting device (1) comprising a twisting unit (2), a de-twisting unit (3) and an impact positioning unit (4, 4a; 4, 4b) movable therebetween with at least one spacing unit (5) extending perpendicularly to a travel direction (V) ), the spacing unit (5) being retracted at a distance of the impact positioning unit (4, 4a; 4, 4b) from the untwisting unit (3) by a maximum of 30 mm, or the lines (L1-L4) to be twisted from the travel position of the impact positioning unit (4, 4a, 4, 4b) are moved out. A method according to claim 11, wherein - The Schlagpositioniereinheit (4, 4a, 4, 4b) is brought with a plurality of retracted spacing units (5) to a non-twisted portion of a cable (K) with at least two individual lines (E1-E4) and then - The spacing units (5) are extended between the individual lines (E1-E4) so that each of the individual lines (E1-E4) is separated from the other individual lines (E1-E4) by means of the spacing units (5). Method according to Claim 11 or 12, in which the spacing units (5) are extended before twisting the individual lines (L1-L4).

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