CA2017894C - Apparatus for the production of twisted cables - Google Patents
Apparatus for the production of twisted cablesInfo
- Publication number
- CA2017894C CA2017894C CA002017894A CA2017894A CA2017894C CA 2017894 C CA2017894 C CA 2017894C CA 002017894 A CA002017894 A CA 002017894A CA 2017894 A CA2017894 A CA 2017894A CA 2017894 C CA2017894 C CA 2017894C
- Authority
- CA
- Canada
- Prior art keywords
- pushing
- cable
- nonrotatable
- scanning surface
- members
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
- H02K15/0414—Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
- H01B13/0278—Stranding machines comprising a transposing mechanism
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
- H02K3/14—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots with transposed conductors, e.g. twisted conductors
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Wire Processing (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
- Insulated Conductors (AREA)
Abstract
The invention relates to an apparatus for the production of twisted cables by the roebeling of shaped cables of angular cross-section, a guide being provided for the shaped cables, which are conveyed in two parallel stacks. The apparatus is formed by lateral parallel guide surfaces and pushing means which are offset by 90° in relation thereto, one pushing means per stack, the two pushing means, which are disposed diagrammatically offset in relation to one another, being displaceable in parallel to opposite hands in a timed manner, pushing members being provided which can be moved transversely of the longitudinal extension of the twisted cable for the displacement to opposite hands of each shaped cable from one stack to the adjacent stack, accompanied by the bending of the sectional cable. The pushing members are disposed opposite one another in the other diagonal from the pushing means. The apparatus also comprises a control system for synchronizing the timed actuation of the drives for the displacement of the pushing means and the pushing members.
It is a characteristic of the invention that associated with each pushing member (5) on the opposite side of the twisted cable is a counter-abutment (8) which is offset in relation to the pushing member in the conveying direction (9) of the twisted cables and is mounted to be displaced to opposite hands to said pushing member and transversely of the twisted cable and is driven in synchronism with the movement of the pushing members and the pushing means.
It is a characteristic of the invention that associated with each pushing member (5) on the opposite side of the twisted cable is a counter-abutment (8) which is offset in relation to the pushing member in the conveying direction (9) of the twisted cables and is mounted to be displaced to opposite hands to said pushing member and transversely of the twisted cable and is driven in synchronism with the movement of the pushing members and the pushing means.
Description
- . ~
- 2~1789~
APPARATUS FOR THE PRODUCTION OF TWISTED CABLES
The invention relates to an apparatus for the production of twisted cables by the roebeling of shaped cables of angular cross-section, having: a guide for the shaped cables conveyed in two parallel stacks which is formed by lateral parallel guide surfaces and pushing means which are offset by 90 thereto, one for each stack, the two pressure means being disposed diametrically opposite one another and being displaceable in parallel to opposite hands in a timed manner; pushing members which are mounted opposite one another in the other diagonal from the pushing means and which can be moved transversely of the-longitudinal extension of the twisted cable for the displacement to opposite hands of each shaped cable from one stack to the adjacent stack, accompanied by the bending of the shaped cable;
and a control system for synchronizing the timed actuation of the drives for the displacement of the pushing means and the pushing members.
An apparatus having these features is known from British Patent Specification 969 086. It is an apparatus for the production of a composite electric cable wherein the isolated individual cables of rectangular cross-section pass through a roebeling tool in stacks disposed parallel one beside the other. The periphery of the strand formed by the stacked shaped cables is engaged by pushing members, which displace the particular top and bottom shaped cable on to the adjacent stack, accompanied by the bending ~:)17894 _ 2 of the cable. This operation, which enables angular shaped cables to be twisted, is known as "roebeling", the tool being called a roebeling tool, after its inventor Roebel.
In addition to the two pushing members for displacing the top and bottom shaped cable on to the adjacent stack, the prior art roebeling tool also has two pushing means, each of which pushes a stack of individual cables upwards and downwards. On completion of the pushing operation, the pushing members engaged to displace the shaped cables in the manner described. The course followed in the roebeling of the shaped cables of the twisted cable and the twisted cables thus formed is explained in detail, for example, in US Patent Specification 2 249 509 and diagrammatically illustrated in Fig. 1 for an even number of-twisted cables. Detail (a) of Fig. 1 shows the starting condition of the two adjacent stacks of shaped cables 1 of rectangular cross-section. The shaped cables 1 are displaced in relation to one another by the thickness of a sectional cable by the engagement of pushing members, which engage with the two stacks diametrically in the direction indicated by arrow 2. The final state of this displacement is shown in part (b) of Fig. 1.
The top and bottom shaped cables are then immediately displaced by pushing members on to the adjacent stack in the direction indicated by arrow 3. At the same time the two shaped cables are bent. Fig. 2 shows in perspective such a twisted or roebeled twisted cable in which the top and bottom shaped cables are each bent, the bending places being denoted by the reference 4.
20 1 78q4 One disadvantage of the prior art apparatus is that the bending length - i.e., the length from the start to the end of a bending - is relatively large. With equal length of step - i.e., the distance between successive bendings - this leads to correspond-ingly short parallel lengths of the shaped cables, resulting in a deterioration in winding properties, more particularly in the case of twisted cables having a large number of shaped cables.
If the parallel portions of the shaped cables are lengthened, the length of step becomes correspondingly longer, and this also causes the winding properties to deteriorate.
To obviate the disadvantage described, it is an object of the invention to keep the bending length and therefore the length of step and the lay of the twisted cable as short as possible when twisting shaped cables of angular cross-section. The windability of the twisted cable can be improved in this way and more particularly smaller winding diameters can be achieved, the result being a more compact construction.
According to one aspect of the invention there is provided an apparatus for the production of twisted cables by the roebeling of shaped cables of angular cross-section, having: a guide for the shaped cables conveyed in two parallel stacks which is formed by lateral parallel guide surfaces and pushing means which are offset by 90 thereto, one for each stack, the two pressure means being disposed diametrically opposite one another and being displaceable in parallel to opposite hands in a timed manner; pushing members which are mounted opposite one another in the other diagonal from the pushing means and which can be moved - 3a _ 201 789~
transversely of the longitudinal extension of the twisted cable for the displacement to opposite hands of each shaped cable from one stack to the adjacent stack, accompanied by the bending of the shaped cablei and a control system for synchronizing the timed actuation of the drives for the displacement of the pushing means and the pushing members, characterized in that associated with each pushing member on the opposite side of the twisted cable is a counterabutment which is offset in relation to the pushing member in the conveying direction of the twisted cables and is mounted to be displaced to opposite hands to said pushing member and transversely of the twisted cable and is driven in synchronism with the movement of the pushing members and the pushing means.
According to another aspect of the invention there is provided an apparatus for making a cable by roebeling individual rectangular cross-sectioned strands, said cable having opposite lateral sides and top and bottom sides and a rectangular cross-section, said apparatus comprising guide means for a plurality of individual rectangular cross-sectioned strands conveyed in two parallel stacks in a conveying direction, the two stacks being conveyed in lateral contact with each other; two pressing elements, each of said pressing elements extending in a direction perpendicular to said conveying direction and one of said pressing elements being engageable with one of said stacks from the top side of the cable and the other of said pressing elements béing engagable with the other of said stacks from the bottom side of the cable, said pressing elements being displaceable in opposite directions to move said stacks toward each other;
~, ` 20 1 789~
- 3b -two nonrotatable pushing members, each of said pushing members being mounted on opposite lateral sides of said cable, said pushing members being structured and positioned to move in another direction perpendicular to and across the conveying direction to displace respective individual strands to adjacent ones of said stacks and to simultaneously bend said individual strands; a non-rotatable counterabutment member spaced along said conveying direction from each of said pushing member and being mounted to be moveable oppositely to the pushing member associated therewith; means for adjusting, prior to said roebrling, a spacing between each of said nonrotatable pushing members and said nonrotatable counterabutment member associated therewith; and a drive for moveably operating each of said pushing members and said pressing elements and a control device for synchronized timed actuation of the drives for separate displacement of the pressing elements and pushing members to control relative positions of said pushing members and pressing elements during conveying of said two parallel stacks so as to form said cable.
According to yet another aspect of the invention there is provided an apparatus for making a cable by roebeling individual rectangular cross-sectioned strands, said cable having opposite lateral sides and top and bottom sides and a rectangular cross-section, said apparatus comprising guide means for a plurality ofindividual rectangular cross-sectioned strands conveyed in two parallel stacks in a conveying direction, the two stacks being conveyed in lateral contact with each other; two pressing elements, each of said pressing elements extending in a direction "~ ~
201 78q4 .
- 3c -perpendicular to said conveying direction and one of said pressing elements being engageable with one of said stacks from the top side of the cable and the other of said pressing elements being engageable with the other of said stacks from the bottom side of the cable, said pressing elements being displaceable in opposite directions in a timed reciprocating manner to move said stacks toward each other; two nonrotatable pushing members, each of said nonrotatable pushing members being mounted on opposite lateral sides of said cable, said nonrotatable pushing members being structured and positioned to move in another direction perpendicular to and across the conveying direction to displace respective individual strands to adjacent ones of said stacks and to simultaneously bend said individual strands; a nonrotatable counterabutment member spaced along said conveying direction from each of said nonrotatable pushing member and being mounted to be moveable oppositely to said nonrotatable pushing member associated therewith; means for adjusting, prior to said roebling, a spacing between each of said nonrotatable pushing members and said nonrotatable counterabutment members; and a hydraulic drive for moveably operating each of said nonrotatable pushing members and said pressing elements and an electronic control device for synchronized timed actuation of the drives for separate displacement of the pressing elements and nonrotatable pushing members, each of said drives being controllable by said control device to control the relative positions of said nonrotatable pushing members and pressing elements during conveying of said two parallel stacks of individual strands to form said cable.
2~)17894 The use according to the invention of counter-abutments which cooperate with the pushing members during the bending of the top or bottom shaped cable of the stack enables the bending length to be shortened and moreover the bending to be performed more precisely than with the use of the prior art roebeling tool disclosed in British Patent Specification 969 086.
Another advantage to be obtained by the use of the apparatus according to the invention is that during bending by the pushing member the shaped cable no longer bears against the adjacent shaped cable, but against counter-abutments, thus preventing damage to the insulation at the places where the adjacent shaped cables contact one another.
In a preferred embodiment of the apparatus according to the invention pushing members and/or associated counter-abutments are mounted to be displaced in relation to one another parallel with the longitudinal extension of the twisted cable. In this way the distance between the pushing member and the associated counter-abutment and therefore the bending length can be varied.
Also preferably in the apparatus according to the invention the pushing members, the counter-abutment and the pushing means can be moved in synchronism electronically controlled by hydraulic or pneumatic drives. This enables the individual elements of the roebeling tool to be individually actuated while co-operating precisely harmonized - i.e., synchronously. In comparison with the purely mechanical actuation of the tool elements, as known from British Patent Specification 969 086, consisting of 2~17894 _ 5 cooperating cams, eccentrics and a common toothed rim producing the synchronization of the tool elements, the advantages of the preferred pneumatic or hydraulic method of operation are that a more precisely harmonizable and simpler control system can be achieved and no wear requiring readjustment takes place on the driving elements (cams/eccentrics/toothed rim).
Also preferably in the apparatus according to the invention the pushing memers and counter-abutments bear against the shaped.
cable with an adjustable pressure, to maintain their clearly-defined position on the shaped cable and enable them to follow the cable resiliently when it is deflected.
According to another advantageous feature of the apparatus ~.
according to the invention, a small spacing plate having a thickness corresponding to the thickness of a shaped cable is releasably attached on the scanning surface of the pushing members and counter-abutments. In this way the apparatus can be adapted to different sizes of shaped cables to be roebeled to form a twisted cable, merely by interchanging the small spacing plate. However, instead of interchanging the s~all spacing plate according to an advantageous feature of the invention the small spacing plate can also be mounted vertically adjustably and adjusted, for example, by screws to change the thickness.
The invention will now be described in greater detail with reference to the drawings, wherein:
2~17894 _ 6 Fig. 3 is a perspective elevation of the roebeling tool, Fig. 4 is a perspective elevation of the pushing member, Fig. 5 is a perspective elevation of the counter-abutment, Fig. 6 is a graph of the movements made by the roebeling tool elements, and Fig. 7 shows-the roebeling tool with hydraulic drives.
A roebeling tool comprises two pushing members 5 and two pushing means 6 which engage with the twisted cable on the opposite diameter from the pushing members 5. A common toothed driving rim 7 synchronizes the movements of the pushing members 5 and pushing means 6.
In addition to the pushing members 5 and pushing means 6, counter-abutments 8 are provided which are spaced out in the conveying direction 9 from each associated pushing member 5.
Each counter-abutment 8 has a surface and a finger 11 which is bent at right angles thereto and which, like the pushing member 5, forms a scanning surface 12. The pushing members 5 and counter-abutments 8 bear via the scanning surfaces 12 against the particular stack surface with a pressure adjustable, for example, by springs.
Each pushing member 5 and each counter-abutment 8 also has a small spacing plate 13 which is mounted releasably 2~)17894 interchangeable or vertically adjustable. For example, the small spacing plate can be attached to a clamping screw (Fig. 4). The thickness s of the small spacing plate 13 can be changed by rotation of the setscrew. The small spacing plates 13 have a thickness s which is the same as or somewhat smaller than the thickness of a shaped cable 1. The small spacing plates 13 can be interchanged if twisted cables are to be produced from shaped cables of a different thickness.
The counter-abutments 8 can be altered via adjustable cams 14, 15 and eccentric discs 16, 17.
Fig. 6 is a graph of the moves taking place in the timed actuation of the elements of the roebeling tool, namely the pushing members, pushing means and counter-abutments, for a twisted cable having an odd number of shaped cables. The cycle begins with the relative displacement of the two stacks of shaped cables towards one another in the parallel direction by means of the pushing means I, II, whereafter the associated pushing members II and counter-abutments II come into operation to push the projecting shaped cable on to the adjacent stack, said shaped cable being bent at the same time. After the toothed rim 7 has rotated through 180 , the pushing member I and the associated counter-abutment I then come into operation to displace-a shaped cable on the opposite side, accompanied by its bending. The graph of movements in Fig. 6 corresponds to what is shown in Fig.
1, although in the latter case for an even number of shaped cables.
-2~)17894 Fig. 7 shows diagrammatically the pneumatic or hydraulicactuation of the elements of the roebeling tool by means of a hydraulic unit 18 comprising a hydraulic cylinder 19, a distributing valve 20 and an electric junction box 21. Otherwise the structure of the roebeling tool corresponds to the one shown in Fig. 3.
2~)~789~
, g List of ref e~ ~.l~ea 1 - shaped cable 2 - direction of arrow (pushing means) 3 - direction of arrow (pushing members) 4 - bending place - pushing members 6 - pushing means 7 - toothed driving rim 8 - counter-abutment 9 - conveying direction 11 - finger 12 - scanning surface 13 - small spacing plate 14 - cam 15 - cam 16 - eccentric 17 - eccentric 18 - hydraulic unit 19 - hydraulic unit 20 - distributing valve 21 - electric junction box Wording on Fig. 2: Schrittlange = step length; Kropflange =
bending length; gerade Lange = straight length; Papier = paper.
Wording on Fig. 6: Drucker = pushing means; Schieber = pushing member; Gegenhalter = counter-abutment; Hub = stroke.
APPARATUS FOR THE PRODUCTION OF TWISTED CABLES
The invention relates to an apparatus for the production of twisted cables by the roebeling of shaped cables of angular cross-section, having: a guide for the shaped cables conveyed in two parallel stacks which is formed by lateral parallel guide surfaces and pushing means which are offset by 90 thereto, one for each stack, the two pressure means being disposed diametrically opposite one another and being displaceable in parallel to opposite hands in a timed manner; pushing members which are mounted opposite one another in the other diagonal from the pushing means and which can be moved transversely of the-longitudinal extension of the twisted cable for the displacement to opposite hands of each shaped cable from one stack to the adjacent stack, accompanied by the bending of the shaped cable;
and a control system for synchronizing the timed actuation of the drives for the displacement of the pushing means and the pushing members.
An apparatus having these features is known from British Patent Specification 969 086. It is an apparatus for the production of a composite electric cable wherein the isolated individual cables of rectangular cross-section pass through a roebeling tool in stacks disposed parallel one beside the other. The periphery of the strand formed by the stacked shaped cables is engaged by pushing members, which displace the particular top and bottom shaped cable on to the adjacent stack, accompanied by the bending ~:)17894 _ 2 of the cable. This operation, which enables angular shaped cables to be twisted, is known as "roebeling", the tool being called a roebeling tool, after its inventor Roebel.
In addition to the two pushing members for displacing the top and bottom shaped cable on to the adjacent stack, the prior art roebeling tool also has two pushing means, each of which pushes a stack of individual cables upwards and downwards. On completion of the pushing operation, the pushing members engaged to displace the shaped cables in the manner described. The course followed in the roebeling of the shaped cables of the twisted cable and the twisted cables thus formed is explained in detail, for example, in US Patent Specification 2 249 509 and diagrammatically illustrated in Fig. 1 for an even number of-twisted cables. Detail (a) of Fig. 1 shows the starting condition of the two adjacent stacks of shaped cables 1 of rectangular cross-section. The shaped cables 1 are displaced in relation to one another by the thickness of a sectional cable by the engagement of pushing members, which engage with the two stacks diametrically in the direction indicated by arrow 2. The final state of this displacement is shown in part (b) of Fig. 1.
The top and bottom shaped cables are then immediately displaced by pushing members on to the adjacent stack in the direction indicated by arrow 3. At the same time the two shaped cables are bent. Fig. 2 shows in perspective such a twisted or roebeled twisted cable in which the top and bottom shaped cables are each bent, the bending places being denoted by the reference 4.
20 1 78q4 One disadvantage of the prior art apparatus is that the bending length - i.e., the length from the start to the end of a bending - is relatively large. With equal length of step - i.e., the distance between successive bendings - this leads to correspond-ingly short parallel lengths of the shaped cables, resulting in a deterioration in winding properties, more particularly in the case of twisted cables having a large number of shaped cables.
If the parallel portions of the shaped cables are lengthened, the length of step becomes correspondingly longer, and this also causes the winding properties to deteriorate.
To obviate the disadvantage described, it is an object of the invention to keep the bending length and therefore the length of step and the lay of the twisted cable as short as possible when twisting shaped cables of angular cross-section. The windability of the twisted cable can be improved in this way and more particularly smaller winding diameters can be achieved, the result being a more compact construction.
According to one aspect of the invention there is provided an apparatus for the production of twisted cables by the roebeling of shaped cables of angular cross-section, having: a guide for the shaped cables conveyed in two parallel stacks which is formed by lateral parallel guide surfaces and pushing means which are offset by 90 thereto, one for each stack, the two pressure means being disposed diametrically opposite one another and being displaceable in parallel to opposite hands in a timed manner; pushing members which are mounted opposite one another in the other diagonal from the pushing means and which can be moved - 3a _ 201 789~
transversely of the longitudinal extension of the twisted cable for the displacement to opposite hands of each shaped cable from one stack to the adjacent stack, accompanied by the bending of the shaped cablei and a control system for synchronizing the timed actuation of the drives for the displacement of the pushing means and the pushing members, characterized in that associated with each pushing member on the opposite side of the twisted cable is a counterabutment which is offset in relation to the pushing member in the conveying direction of the twisted cables and is mounted to be displaced to opposite hands to said pushing member and transversely of the twisted cable and is driven in synchronism with the movement of the pushing members and the pushing means.
According to another aspect of the invention there is provided an apparatus for making a cable by roebeling individual rectangular cross-sectioned strands, said cable having opposite lateral sides and top and bottom sides and a rectangular cross-section, said apparatus comprising guide means for a plurality of individual rectangular cross-sectioned strands conveyed in two parallel stacks in a conveying direction, the two stacks being conveyed in lateral contact with each other; two pressing elements, each of said pressing elements extending in a direction perpendicular to said conveying direction and one of said pressing elements being engageable with one of said stacks from the top side of the cable and the other of said pressing elements béing engagable with the other of said stacks from the bottom side of the cable, said pressing elements being displaceable in opposite directions to move said stacks toward each other;
~, ` 20 1 789~
- 3b -two nonrotatable pushing members, each of said pushing members being mounted on opposite lateral sides of said cable, said pushing members being structured and positioned to move in another direction perpendicular to and across the conveying direction to displace respective individual strands to adjacent ones of said stacks and to simultaneously bend said individual strands; a non-rotatable counterabutment member spaced along said conveying direction from each of said pushing member and being mounted to be moveable oppositely to the pushing member associated therewith; means for adjusting, prior to said roebrling, a spacing between each of said nonrotatable pushing members and said nonrotatable counterabutment member associated therewith; and a drive for moveably operating each of said pushing members and said pressing elements and a control device for synchronized timed actuation of the drives for separate displacement of the pressing elements and pushing members to control relative positions of said pushing members and pressing elements during conveying of said two parallel stacks so as to form said cable.
According to yet another aspect of the invention there is provided an apparatus for making a cable by roebeling individual rectangular cross-sectioned strands, said cable having opposite lateral sides and top and bottom sides and a rectangular cross-section, said apparatus comprising guide means for a plurality ofindividual rectangular cross-sectioned strands conveyed in two parallel stacks in a conveying direction, the two stacks being conveyed in lateral contact with each other; two pressing elements, each of said pressing elements extending in a direction "~ ~
201 78q4 .
- 3c -perpendicular to said conveying direction and one of said pressing elements being engageable with one of said stacks from the top side of the cable and the other of said pressing elements being engageable with the other of said stacks from the bottom side of the cable, said pressing elements being displaceable in opposite directions in a timed reciprocating manner to move said stacks toward each other; two nonrotatable pushing members, each of said nonrotatable pushing members being mounted on opposite lateral sides of said cable, said nonrotatable pushing members being structured and positioned to move in another direction perpendicular to and across the conveying direction to displace respective individual strands to adjacent ones of said stacks and to simultaneously bend said individual strands; a nonrotatable counterabutment member spaced along said conveying direction from each of said nonrotatable pushing member and being mounted to be moveable oppositely to said nonrotatable pushing member associated therewith; means for adjusting, prior to said roebling, a spacing between each of said nonrotatable pushing members and said nonrotatable counterabutment members; and a hydraulic drive for moveably operating each of said nonrotatable pushing members and said pressing elements and an electronic control device for synchronized timed actuation of the drives for separate displacement of the pressing elements and nonrotatable pushing members, each of said drives being controllable by said control device to control the relative positions of said nonrotatable pushing members and pressing elements during conveying of said two parallel stacks of individual strands to form said cable.
2~)17894 The use according to the invention of counter-abutments which cooperate with the pushing members during the bending of the top or bottom shaped cable of the stack enables the bending length to be shortened and moreover the bending to be performed more precisely than with the use of the prior art roebeling tool disclosed in British Patent Specification 969 086.
Another advantage to be obtained by the use of the apparatus according to the invention is that during bending by the pushing member the shaped cable no longer bears against the adjacent shaped cable, but against counter-abutments, thus preventing damage to the insulation at the places where the adjacent shaped cables contact one another.
In a preferred embodiment of the apparatus according to the invention pushing members and/or associated counter-abutments are mounted to be displaced in relation to one another parallel with the longitudinal extension of the twisted cable. In this way the distance between the pushing member and the associated counter-abutment and therefore the bending length can be varied.
Also preferably in the apparatus according to the invention the pushing members, the counter-abutment and the pushing means can be moved in synchronism electronically controlled by hydraulic or pneumatic drives. This enables the individual elements of the roebeling tool to be individually actuated while co-operating precisely harmonized - i.e., synchronously. In comparison with the purely mechanical actuation of the tool elements, as known from British Patent Specification 969 086, consisting of 2~17894 _ 5 cooperating cams, eccentrics and a common toothed rim producing the synchronization of the tool elements, the advantages of the preferred pneumatic or hydraulic method of operation are that a more precisely harmonizable and simpler control system can be achieved and no wear requiring readjustment takes place on the driving elements (cams/eccentrics/toothed rim).
Also preferably in the apparatus according to the invention the pushing memers and counter-abutments bear against the shaped.
cable with an adjustable pressure, to maintain their clearly-defined position on the shaped cable and enable them to follow the cable resiliently when it is deflected.
According to another advantageous feature of the apparatus ~.
according to the invention, a small spacing plate having a thickness corresponding to the thickness of a shaped cable is releasably attached on the scanning surface of the pushing members and counter-abutments. In this way the apparatus can be adapted to different sizes of shaped cables to be roebeled to form a twisted cable, merely by interchanging the small spacing plate. However, instead of interchanging the s~all spacing plate according to an advantageous feature of the invention the small spacing plate can also be mounted vertically adjustably and adjusted, for example, by screws to change the thickness.
The invention will now be described in greater detail with reference to the drawings, wherein:
2~17894 _ 6 Fig. 3 is a perspective elevation of the roebeling tool, Fig. 4 is a perspective elevation of the pushing member, Fig. 5 is a perspective elevation of the counter-abutment, Fig. 6 is a graph of the movements made by the roebeling tool elements, and Fig. 7 shows-the roebeling tool with hydraulic drives.
A roebeling tool comprises two pushing members 5 and two pushing means 6 which engage with the twisted cable on the opposite diameter from the pushing members 5. A common toothed driving rim 7 synchronizes the movements of the pushing members 5 and pushing means 6.
In addition to the pushing members 5 and pushing means 6, counter-abutments 8 are provided which are spaced out in the conveying direction 9 from each associated pushing member 5.
Each counter-abutment 8 has a surface and a finger 11 which is bent at right angles thereto and which, like the pushing member 5, forms a scanning surface 12. The pushing members 5 and counter-abutments 8 bear via the scanning surfaces 12 against the particular stack surface with a pressure adjustable, for example, by springs.
Each pushing member 5 and each counter-abutment 8 also has a small spacing plate 13 which is mounted releasably 2~)17894 interchangeable or vertically adjustable. For example, the small spacing plate can be attached to a clamping screw (Fig. 4). The thickness s of the small spacing plate 13 can be changed by rotation of the setscrew. The small spacing plates 13 have a thickness s which is the same as or somewhat smaller than the thickness of a shaped cable 1. The small spacing plates 13 can be interchanged if twisted cables are to be produced from shaped cables of a different thickness.
The counter-abutments 8 can be altered via adjustable cams 14, 15 and eccentric discs 16, 17.
Fig. 6 is a graph of the moves taking place in the timed actuation of the elements of the roebeling tool, namely the pushing members, pushing means and counter-abutments, for a twisted cable having an odd number of shaped cables. The cycle begins with the relative displacement of the two stacks of shaped cables towards one another in the parallel direction by means of the pushing means I, II, whereafter the associated pushing members II and counter-abutments II come into operation to push the projecting shaped cable on to the adjacent stack, said shaped cable being bent at the same time. After the toothed rim 7 has rotated through 180 , the pushing member I and the associated counter-abutment I then come into operation to displace-a shaped cable on the opposite side, accompanied by its bending. The graph of movements in Fig. 6 corresponds to what is shown in Fig.
1, although in the latter case for an even number of shaped cables.
-2~)17894 Fig. 7 shows diagrammatically the pneumatic or hydraulicactuation of the elements of the roebeling tool by means of a hydraulic unit 18 comprising a hydraulic cylinder 19, a distributing valve 20 and an electric junction box 21. Otherwise the structure of the roebeling tool corresponds to the one shown in Fig. 3.
2~)~789~
, g List of ref e~ ~.l~ea 1 - shaped cable 2 - direction of arrow (pushing means) 3 - direction of arrow (pushing members) 4 - bending place - pushing members 6 - pushing means 7 - toothed driving rim 8 - counter-abutment 9 - conveying direction 11 - finger 12 - scanning surface 13 - small spacing plate 14 - cam 15 - cam 16 - eccentric 17 - eccentric 18 - hydraulic unit 19 - hydraulic unit 20 - distributing valve 21 - electric junction box Wording on Fig. 2: Schrittlange = step length; Kropflange =
bending length; gerade Lange = straight length; Papier = paper.
Wording on Fig. 6: Drucker = pushing means; Schieber = pushing member; Gegenhalter = counter-abutment; Hub = stroke.
Claims (15)
1. An apparatus for the production of twisted cables by the roebeling of shaped cables of angular cross-section, having: a guide for the shaped cables conveyed in two parallel stacks which is formed by lateral parallel guide surfaces and pushing means which are offset by 90° thereto, one for each stack, the two pressure means being disposed diametrically opposite one another and being displaceable in parallel to opposite hands in a timed manner; pushing members which are mounted opposite one another in the other diagonal from the pushing means and which can be moved transversely of the longitudinal extension of the twisted cable for the displacement to opposite hands of each shaped cable from one stack to the adjacent stack, accompanied by the bending of the shaped cable; and a control system for synchronizing the timed actuation of the drives for the displacement of the pushing means and the pushing members, characterized in that associated with each pushing member on the opposite side of the twisted cable is a counterabutment which is offset in relation to the pushing member in the conveying direction of the twisted cables and is mounted to be displaced to opposite hands to said pushing member and transversely of the twisted cable and is driven in synchronism with the movement of the pushing members and the pushing means.
2. An apparatus according to claim 1, characterized in that pushing members and/or associated counterabutments are mounted to be displaced in relation to one another parallel with the longitudinal extension of the twisted cable.
3. An apparatus according to claim 1 or claim 2, characterized in that the pushing members, the counterabutment and the pushing means can be moved in synchronism electronically controlled by hydraulic or pneumatic drives.
4. An apparatus according to claim 1 or claim 2, characterized in that a small spacing plate having a thickness (s) corresponding to the thickness of a shaped cable is releasably attached on the scanning surface of the pushing members and counterabutments.
5. An apparatus according to claim 1, characterized in that the small spacing plate for changing the thickness (s) is mounted vertically adjustable.
6. An apparatus according to claim 1 or claim 2, characterized in that the pushing members and the counterabutments are applied to the twisted cable with an adjustable pressure.
7. An apparatus for making a cable by roebeling individual rectangular cross-sectioned strands, said cable having opposite lateral sides and top and bottom sides and a rectangular cross-section, said apparatus comprising guide means for a plurality of individual rectangular cross-sectioned strands conveyed in two parallel stacks in a conveying direction, the two stacks being conveyed in lateral contact with each other; two pressing elements, each of said pressing elements extending in a direction perpendicular to said conveying direction and one of said pressing elements being engageable with one of said stacks from the top side of the cable and the other of said pressing elements being engagable with the other of said stacks from the bottom side of the cable, said pressing elements being displaceable in opposite directions to move said stacks toward each other; two nonrotatable pushing members, each of said pushing members being mounted on opposite lateral sides of said cable, said pushing members being structured and positioned to move in another direction perpendicular to and across the conveying direction to displace respective individual strands to adjacent ones of said stacks and to simultaneously bend said individual strands; a non-rotatable counterabutment member spaced along said conveying direction from each of said pushing member and being mounted to be moveable oppositely to the pushing member associated therewith; means for adjusting, prior to said roebeling, a spacing between each of said nonrotatable pushing members and said nonrotatable counterabutment member associated therewith;
and a drive for moveably operating each of said pushing members and said pressing elements and a control device for synchronized timed actuation of the drives for separate displacement of the pressing elements and pushing members to control relative positions of said pushing members and pressing elements during conveying of said two parallel stacks so as to form said cable.
and a drive for moveably operating each of said pushing members and said pressing elements and a control device for synchronized timed actuation of the drives for separate displacement of the pressing elements and pushing members to control relative positions of said pushing members and pressing elements during conveying of said two parallel stacks so as to form said cable.
8. An apparatus as defined in claim 7, wherein said control device is electronic and each of said drives comprises a hydraulic piston-cylinder device.
9. An apparatus as defined in claim 7, wherein each of said pushing members and said counterabutment members have a scanning surface, said scanning surface of one of said pushing members and said scanning surface of said counterabutment member spaced from said one pushing member along said conveying direction resting against the top side of said cable and said scanning surface of another of said pushing members and said scanning surface of said counterabutment member spaced from said other pushing member along said conveying direction resting against the bottom side of said cable in operation, and a spacing plate is arranged on said scanning surface and has a height above said scanning surface corresponding to a thickness of one of said individual strands.
10. An apparatus as defined in claim 7, wherein each of said pushing members and said counterabutment members have a scanning surface, said scanning surface of one of said pushing members and said scanning surface of said counterabutment members spaced from said one pushing member along said conveying direction resting against the top side of said cable and said scanning surface of another of said pushing members and said scanning surface of said counterabutment member spaced from said other pushing member along said conveying direction resting against the bottom side of said cable in operation, and a spacing plate is arranged on said scanning surface, has a height above said scanning surface and has means for adjusting the height of the spacing plate from the scanning surface.
11. An apparatus as defined in claim 7, further comprising means for applying an adjustable pressure to one of said strands with said pushing members and said counterabutment members.
12. An apparatus as defined in claim 7, wherein each of said drives is a pneumatic device.
13. An apparatus for making a cable by roebeling individual rectangular cross-sectioned strands, said cable having opposite lateral sides and top and bottom sides and a rectangular cross-section, said apparatus comprising guide means for a plurality of individual rectangular cross-sectioned strands conveyed in two parallel stacks in a conveying direction, the two stacks being conveyed in lateral contact with each other; two pressing elements, each of said pressing elements extending in a direction perpendicular to said conveying direction and one of said pressing elements being engageable with one of said stacks from the top side of the cable and the other of said pressing elements being engageable with the other of said stacks from the bottom side of the cable, said pressing elements being displaceable in opposite directions in a timed reciprocating manner to move said stacks toward each other; two nonrotatable pushing members, each of said nonrotatable pushing members being mounted on opposite lateral sides of said cable, said nonrotatable pushing members being structured and positioned to move in another direction perpendicular to and across the conveying direction to displace respective individual strands to adjacent ones of said stacks and to simultaneously bend said individual strands; a nonrotatable counterabutment member spaced along said conveying direction from each of said nonrotatable pushing member and being mounted to be moveable oppositely to said nonrotatable pushing member associated therewith; means for adjusting, prior to said roebling, a spacing between each of said nonrotatable pushing members and said nonrotatable counterabutment members; and a hydraulic drive for moveably operating each of said nonrotatable pushing members and said pressing elements and an electronic control device for synchronized timed actuation of the drives for separate displacement of the pressing elements and nonrotatable pushing members, each of said drives being controllable by said control device to control the relative positions of said nonrotatable pushing members and pressing elements during conveying of said two parallel stacks of individual strands to form said cable.
14. An apparatus as defined in claim 13, wherein each of said nonrotatable pushing members and said nonrotatable counter-abutment members have a scanning surface, said scanning surface of one of said nonrotatable pushing members and said scanning surface of said nonrotatable counterabutment member spaced from said one pushing member along said conveying direction resting against the top side of said cable and said scanning surface of another of said nonrotatable pushing members and said scanning surface of said nonrotatable counterabutment member spaced from said other pushing member along said conveying direction resting against the bottom side of said cable in operation, and a spacing plate is arranged on said scanning surface and has a height above said scanning surface corresponding to a thickness of one of said individual strands.
15. An apparatus as defined in claim 13, wherein each of said nonrotatable pushing members and said nonrotatable counter-abutment members have a scanning surface, said scanning surface of one of said nonrotatable pushing members and said scanning surface of said nonrotatable counterabutment member spaced from said one pushing member along said conveying direction resting against the top side of said cable and said scanning surface of another of said nonrotatable pushing members and said scanning surface of said nonrotatable counterabutment member spaced from said other pushing member along said conveying direction resting against the bottom side of said cable in operation, and a spacing plate is arranged on said scanning surface, has a height above said scanning surface and had means for adjusting the height of the spacing plate from the scanning surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3923448.7 | 1989-07-15 | ||
| DE3923448A DE3923448A1 (en) | 1989-07-15 | 1989-07-15 | DEVICE FOR GENERATING THIRD PARTIES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2017894A1 CA2017894A1 (en) | 1991-01-15 |
| CA2017894C true CA2017894C (en) | 1995-10-03 |
Family
ID=6385118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002017894A Expired - Lifetime CA2017894C (en) | 1989-07-15 | 1990-05-30 | Apparatus for the production of twisted cables |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0408832B1 (en) |
| AT (1) | ATE106598T1 (en) |
| CA (1) | CA2017894C (en) |
| DE (1) | DE3923448A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT399613B (en) * | 1991-11-15 | 1995-06-26 | Asta Elektrodraht Gmbh | METHOD FOR PRODUCING A WINDING FOR TRANSFORMERS AND DEVICE FOR IMPLEMENTING THE METHOD |
| DE29914596U1 (en) | 1999-08-20 | 2000-01-13 | Alcatel, Paris | Multiple parallel conductor for windings of electrical devices and machines |
| DE10027564A1 (en) * | 2000-06-02 | 2001-12-06 | Alcatel Sa | Process for the production of twisted pairs |
| CH706228A2 (en) * | 2012-03-05 | 2013-09-13 | Huber+Suhner Ag | A process for producing a coaxial cable, and coaxial cable. |
| CN108687260B (en) * | 2018-05-30 | 2023-11-07 | 福建省昌辉机电有限公司 | Wire twisting device for outgoing wire of generator |
| CN117038163B (en) * | 2023-08-15 | 2024-01-30 | 安徽尚纬电缆有限公司 | Low-deviation flat transposed conductor for extra-high voltage matched reactor and manufacturing process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2249509A (en) * | 1939-08-31 | 1941-07-15 | Gen Electric | Rectangular cable and method of making the same |
| US2986176A (en) * | 1955-09-06 | 1961-05-30 | Gen Electric | Cable transposing mechanism |
| NL110174C (en) * | 1958-02-27 | |||
| GB969086A (en) * | 1962-06-05 | 1964-09-09 | Ass Elect Ind | Improvements relating to the manufacture of transposed multiple strip conductors |
| BE633359A (en) * | 1962-06-07 | |||
| US4329764A (en) * | 1978-11-22 | 1982-05-18 | Mitsubishi Denki Kabushiki Kaisha | Stepped combination apparatus |
-
1989
- 1989-07-15 DE DE3923448A patent/DE3923448A1/en active Granted
-
1990
- 1990-03-23 EP EP90105473A patent/EP0408832B1/en not_active Expired - Lifetime
- 1990-03-23 AT AT90105473T patent/ATE106598T1/en not_active IP Right Cessation
- 1990-05-30 CA CA002017894A patent/CA2017894C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE3923448C2 (en) | 1991-05-16 |
| ATE106598T1 (en) | 1994-06-15 |
| EP0408832B1 (en) | 1994-06-01 |
| EP0408832A3 (en) | 1992-03-04 |
| DE3923448A1 (en) | 1991-01-24 |
| EP0408832A2 (en) | 1991-01-23 |
| CA2017894A1 (en) | 1991-01-15 |
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