EP3812060B1 - Device for straightening cables - Google Patents
Device for straightening cables Download PDFInfo
- Publication number
- EP3812060B1 EP3812060B1 EP19204346.1A EP19204346A EP3812060B1 EP 3812060 B1 EP3812060 B1 EP 3812060B1 EP 19204346 A EP19204346 A EP 19204346A EP 3812060 B1 EP3812060 B1 EP 3812060B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- straightening apparatus
- rollers
- roller group
- straightening
- 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.)
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- 238000000034 method Methods 0.000 claims description 25
- 230000000694 effects Effects 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 description 11
- 238000003825 pressing Methods 0.000 description 8
- 230000007935 neutral effect Effects 0.000 description 4
- 238000002788 crimping Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F11/00—Cutting wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F23/00—Feeding wire in wire-working machines or apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
- B21D3/05—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work
Definitions
- the invention relates to a straightening device for straightening cables according to the preamble of claim 1.
- the straightening device can be part of a cable processing machine.
- Such cable processing machines are used for the assembly of electric cables. When assembling cables, cables can be cut to length and stripped and then the cable ends can be crimped.
- the cable processing machines can also include grommet stations, in which the stripped cable ends are equipped with grommets before crimping.
- the cables such as insulated strands or solid conductors made of copper or steel, which are processed on a cable processing machine, are usually provided in barrels, on rolls or as a bundle and are therefore more or less strongly curved and twisted after unwinding.
- Straightened cables are important in order to be able to reliably carry out process steps such as stripping, crimping and, if necessary, fitting with connector housings on the cable processing machine. In order to straighten the cables as much as possible, they are usually pulled through a straightening apparatus attached to the infeed of the machine with the aid of the drives present in the cable processing machine.
- the pamphlet U.S. 5,676,010 A shows a straightening apparatus and forms the basis for the preamble of claim 1.
- a straightener is, for example, from EP 2 399 856 A1 known.
- the straightener has an upper and a lower set of rollers.
- the cable to be straightened is passed between the rollers of the two groups of rollers in a transport direction.
- the roller groups can be moved relative to each other. Starting from an open position, the upper roller group is first displaced in a closed direction, which runs at right angles to the transport direction of the cable, against the lower roller group into a closed position. In this closed position, the rollers of the upper and lower roller groups, which run parallel to one another, are on the cable and touch it. This process is also known and familiar to the person skilled in the art under the designation "delivery".
- the distance between the rollers can be adjusted manually using a rotary knob.
- An additional quick-release lever enables the straightener to be opened and closed quickly when removing and Laying the cable between the rollers.
- the roller spacing can also be adjusted automatically.
- the infeed mechanism for moving the upper group of rollers against the lower group of rollers is provided with a motor drive.
- this variant is technically complex and expensive.
- the straightening device for straightening cables comprises a first group of rollers having several rollers and a second group of rollers opposite the first group of rollers and having several rollers, with the cable being able to be passed through in a transport direction alternately between the rollers of the first roller group and the rollers of the second roller group.
- the straightening apparatus further comprises an infeed device that can be actuated manually or driven by a motor, for example, with which the first group of rollers can be displaced against the second group of rollers. Because the straightening apparatus includes securing means for securing the position of the first group of rollers, the distance between the rollers can be set precisely. The delivery, ie the process in which the first roller group is brought from an open position to a closed position, can be carried out in an efficient manner.
- the first group of rollers can be moved from the open position in the closing direction, which runs transversely and preferably at right angles to the transport direction, against the second group of rollers to adjust the distance between the rollers of the first and second group of rollers.
- the open position is the position in which the rollers of the first and second rows of rollers are spaced far enough apart that the cable can be inserted between the rollers.
- the closed position is the position after the sliding movement has ended; the delivery process is complete. In the closed position, the rollers of the first and second roller groups touch the ideal cable in such a way that it has a straight and not a wavy course.
- the straightening apparatus may comprise a first roller support for the first roller group to which the rollers of the first roller group are freely rotatably mounted and a second roller support for the second roller group to which the rollers of the second roller group are freely rotatably mounted.
- the straightening apparatus can have a frame, for example in the form of a base plate, for carrying the first and the second roller support, the first roller support being mounted in the frame so that it can be displaced in the closing direction.
- the straightening apparatus for forming the securing means includes a return lock, which blocks a reverse movement of the first roller group counter to the closing direction during the infeed process. Thanks to the backstop, the straightening device can be operated reliably, ergonomically and efficiently with regard to the infeed process.
- discrete backstops such as backstops based on a ratchet mechanism can be provided.
- a ratchet mechanism can, for example, comprise teeth and a pawl which interacts therewith. With the ratchet mechanism, however, mitral movement would be possible. It is therefore advantageous that the infeed device of the straightening apparatus includes a stepless backstop. Infinitely variable backstops have the advantage of being able to prevent virtually all unwanted reverse movement.
- the aforementioned backstop can be configured as a positively acting backstop.
- the backstop can also be designed as a non-positively acting backstop.
- other backstops are also conceivable.
- the backstop could be a hydraulic cylinder; if the roller support wants to move back, the outflow of hydraulic oil from the hydraulic cylinder is prevented by non-return valves and the backstop is thus effective.
- first roller support is supported on the frame by a spring element, in particular a helical compression spring, which acts on the first roller support with a spring force counter to the closing direction. Safe functioning of the backstop can thus be guaranteed in a simple manner.
- the backstop can comprise a clamping body and in particular a clamping roller, the clamping body or the clamping roller being accommodated in a wedge gap.
- the wedge gap can be a receptacle for the clamping body that tapers in relation to the closing direction. Due to the wedge effect, the clamping body pressed into the wedge gap can reliably block a return movement of the first roller support.
- the backstop can include a spring for generating a preload for the clamping body, in particular the clamping roller.
- the spring-loaded clamping body is constantly pressed into the wedge gap and thus ensures reliable functioning of the backstop.
- the first roller support can have a wedge-shaped contact surface which, together with a stationary counter surface, forms the wedge gap.
- the stationary counter-surface can be formed, for example, by a guide surface assigned to the frame, along which the first roller support can be guided during the closing process.
- Alternative backstops could include two wedges, the wedges having oppositely directed, sloping wedge surfaces which, if reverse movement were to occur, would be urged together preventing reverse movement.
- Other alternative backstops could include eccentric bodies.
- the straightening apparatus can have a manually operable infeed device with an operating element that can be moved linearly in the closing direction, in particular in the form of a button, via which the first roller support or the first roller group can be displaced in the closing direction, for example by pressing the operating element.
- a straightening apparatus is characterized by easy handling and good ergonomics.
- the control element only has to be pressed to deliver.
- a quick-release lever for quick closing is also not required.
- a driver for advancing the first roll support can be connected to the operating element.
- the driver can connect to a shank of the operating element or be formed by the shank itself.
- the shank is one in the closing direction extending, elongate member.
- the driver or the shaft can be slidably mounted in the frame and can be moved in the closing direction (and optionally in the opposite direction). When it is moved in the closing direction by pressing the button-like operating element or when it is moved in some other way, the driver pushes against the first roller support and thus displaces the first roller support in the closing direction.
- a straightening apparatus with an infeed device that can be driven by a motor can also have such a driver.
- the backstop is preferably designed as a releasable backstop.
- an unlocking element can be provided to release the blocking effect of the backstop.
- An unlocking element for releasing the blocking effect can be arranged on the driver or can be connected to the driver.
- the driver with the unlocking element is designed in such a way that during a return movement, ie during a movement in the opposite direction to the closing direction, the unlocking element can be brought into abutment with the clamping body.
- the unlocking element can be a nose-like projection projecting away from the driver or the shaft.
- the unlocking element can push the clamping body away, so that the clamping body no longer contacts the wedge-shaped contact surface of the wedge gap, that is to say there is no longer any clamping.
- the blocking effect can be released by pulling the button-like operating element.
- This solution is characterized by its easy handling.
- the straightening apparatus does not necessarily have to have an infeed device that can be actuated manually.
- the straightening apparatus has a drivable infeed device with a linear direct drive, a Having pneumatic cylinders or a hydraulic cylinder for moving the first roller support in the closing direction.
- Such infeed devices can be controlled easily and operated automatically or semi-automatically.
- the straightening apparatus for determining the closed position can have a contact roller, with the contact roller being arranged on the output side following the first roller group in relation to the transport direction, and with the cable between the contact roller and a counter roller assigned to the second roller group and located opposite the contact roller is pressable.
- the straightening apparatus for determining the closed position can have at least one and preferably several contact fingers that are preferably mounted so that they can be displaced to a limited extent in the closing direction, the at least one contact finger being assigned to one of the roller groups and in particular to the first roller group.
- the contact finger can be arranged opposite a roller of the other group of rollers, in particular the second group of rollers, in such a way that the cable can be pressed between the respective contact finger and the roller opposite.
- the probing fingers can be designed in such a way that, after the closed position has been determined, they can be brought into a rest position by displacement in the opposite direction to the closing direction, so that they no longer act on the cable.
- the second roller support is mounted on the frame so that it can rotate about a pivot axis and if the straightening apparatus has a pivoting device that can be actuated manually or driven by a motor, for example, with which to adjust the angle of attack between the rollers the first and the second group of rollers, the second group of rollers can preferably be pivoted from a neutral position into an active position.
- the second roller support can particularly preferably be rotatably mounted on the frame in such a way that, as a result of the pivoting of the second roller support, the rollers on the input side act more strongly on the cable than the rollers on the output side.
- the pivoting device can, for example, be a device as already known from the EP 2 399 856 has become known.
- a gate control can be provided for the movement of the first roller support and/or the second roller support.
- a linearly movable pusher element can be provided for the gate control, via which both the first roller support and the second roller support can be moved.
- the pushing element can be designed to be manually actuated or motor-driven.
- the two straightening parameters (roller spacing, angle of attack) can be set in a single common work step or actuating movement.
- the straightening apparatus can have a push element with a hand lever that can be actuated manually and can preferably be moved back and forth in the transport direction.
- An infeed link guide for moving the first roller support in the closing direction and an opening link guide for releasing the blocking effect and for returning the first roller support can be arranged on the pushing element.
- a first, spring-loaded control body can interact with the feed link guide and the opening link guide.
- a pivoting link guide for pivoting the second roller support can be arranged on the pushing element.
- a second, spring-loaded control body can interact with the pivoting link guide.
- the pivoting link guide can be formed by a step-like control path with preferably a plurality of receptacles for the control body. This enables the angle of attack to be adjusted particularly quickly.
- a pivoting link guide could also be used with conventional straighteners, i.e. with straighteners without a backstop or other securing means for securing the position of the first roller group that has been shifted by means of the infeed device.
- figure 1 shows a straightening apparatus 1 for straightening cables with two opposite roller groups 2 and 3 that can be moved towards one another.
- a second group of rollers, designated 3 has a plurality of rollers 21.1 to 21.6 arranged one behind the other in a row.
- the first roller group 2 is arranged at the top in the straightening apparatus 1, which is why, for the sake of simplicity and better understanding, this roller group is referred to as “upper roller group”; the associated rollers 20.1 to 20.7 are correspondingly «upper rollers».
- the group of rollers 3 opposite the upper group of rollers 2 is consequently a “lower group of rollers” in the present case.
- the upper rollers 20.1 to 20.7 and the lower rollers 21.1 to 21.6 run parallel to one another and each lie on horizontal roller lines.
- This in 1 (not shown) cable which can be passed between the upper rollers 20.1 .. 20.7 and the lower rollers 21.1 .. 21.6 for straightening, also runs in the horizontal direction, which is indicated by an arrow x.
- 1 shows the straightening device 1 in an open position, in which the two groups of rollers 2 are spaced far enough from one another that a cable can be introduced or inserted between the upper rollers 20.1 .. 20.7 and the lower rollers 21.1 .. 21.6. Thereafter, the upper group of rollers 2 is moved against the lower group of rollers 3 . This closing movement is indicated with an arrow s.
- the closing direction s runs in the vertical direction. 2 shows the straightening device 1 in a closed position or after the end of an infeed process, after the upper roller group 2 has been moved against the lower roller group 3 in the closing direction s.
- the cable 4, which is now alternately acted upon by the rollers 20.1 .. 20.7 and 21.1 .. 21.6 of the upper and lower roller groups 2 and 3, can be pulled in the horizontal transport direction x through the straightener 1 by means of a cable conveyor (not shown).
- roller groups 2 and 3 relate to embodiments of the straightening apparatus 1 according to the invention.
- other arrangements and orientations of the roller groups 2 and 3 are also conceivable.
- the two groups of rollers 2 and 3 could also be arranged side by side; in this case, the closing direction s would run on a horizontal plane.
- the straightening apparatus 1 described in detail below can be used in a cable processing machine (not shown) for assembling cables.
- the cable processing machine can be used to process electrical cables, such as insulated strands or insulated solid conductors made of copper or steel.
- the cables to be processed are provided in drums on reels or in bundles.
- the cables fed to the cable processing machine from barrels, rolls or bundles are more or less strongly curved and twisted. The cable must therefore be straightened, for which purpose the straightening apparatus 1 mentioned at the outset is used.
- the cable processing machine can be designed, for example, as a pivoting machine that has a pivoting unit with a cable gripper.
- the swivel unit In order to feed the cable ends to processing stations such as a boot station and a crimping station, the swivel unit must be rotated about a vertical axis.
- a cutting and stripping station is usually arranged on the machine longitudinal axis of the cable processing machine.
- the cable processing machine then includes a feed unit with a cable conveyor designed, for example, as a belt conveyor, which brings the cable in the transport direction along the longitudinal axis of the machine to the pivoting unit.
- the straightening device 1 is arranged in front of the belt conveyor in the cable processing machine on the longitudinal axis of the machine. When feeding the cable to the swing unit, the cable is pulled through the straightener 1 to straighten the cable 4.
- the rollers 20.1 .. 20.7 of the first or upper roller group 2 are attached to a first roller support 6 so that they can rotate freely.
- the rollers 21.1 .. 21.6 of the lower or second roller group 2 are attached to a second roller support 7 so that they can rotate freely.
- the straightening apparatus further comprises a frame 8 in the form of a base plate for supporting the first and second roller supports 6 and 7.
- the roller supports 6, 7 are plate-like in the present case.
- the first roller support 6 with the upper rollers 20.1 .. 20.7 is mounted in the frame 8 so that it can be displaced in the closing direction s.
- the second roller support 6 with the lower rollers 21.1 .. 21.6 is rotatably mounted in the frame 8 with respect to a horizontal pivot axis indicated by 24 and running at right angles to the transport direction.
- the straightener 1 is similar to that of the EP 2 399 856 A1 become known straightening apparatus; the movement of the roller support 6 with the upper rollers 20.1 .. 20.7 for the infeed process is carried out by means of a new type of infeed device 5.
- the infeed device 5 is designed to be operated manually and includes an operating element 16 that can be moved linearly in the closing direction s.
- the first roller support 6 is supported on the frame 8 by a spring element 10 in the form of a helical compression spring, which applies a spring force to the first roller support 6 counter to the closing direction s.
- a spring element 10 in the form of a helical compression spring, which applies a spring force to the first roller support 6 counter to the closing direction s.
- the operating element 16 only needs to be pressed, resulting in particularly simple and ergonomic handling.
- the second roll support 7 with the lower roll group 3 is not moved during the delivery process.
- the lower roller group 3 is held by a machine control system via a pneumatic valve and a pneumatic cylinder 33 in a position parallel to the upper roller group 2, which corresponds to a neutral position.
- the control element 16 is in the form of a button, for example.
- the operating element 16 could have a bow-like handle.
- the straightening device 1 comprises a backstop (9, see the following 3 ), which blocks a reverse movement of the upper roller group 2 against the closing direction s.
- the upper set of rollers could also be blocked by a clamping mechanism, for example a clamping lever or a pneumatic cylinder.
- a freely rotatable contact roller 19 is also arranged on the first roller support 6 .
- the contact roller 19 is arranged on the output side following the upper roller group 2 with respect to the transport direction x and is used to determine the closed position.
- On the opposite side of the contact roller 19 is a counter-roller 22 on the second Role support 7 provided. If starting from the open position ( 1 ) the upper group of rollers 2 is displaced in the s-direction against the second group of rollers 3, the cable 4 lying in between comes into contact with the two rollers 19 and 22.
- the closing movement caused by pressing the control element 16 sets the two thanks to the contact roller 19 and counter roller 22 Role groups 2, 3 for any cable diameter correctly to each other.
- the upper rollers 20.1 .. 20.7 touch on one side and the lower rollers 21.1 .. 21.6 on the other side the cable 4 in the closed position in such a way that it still runs straight.
- the feeler roller 19 and the counter-roller 22 cooperating with it ensure that the rollers 20.1 .. 20.7 and 21.1 .. 21.6 cannot be pushed further into one another, which would lead to a wave-like course of the cable 4 guided between the rollers.
- the operator who presses the operating element 16 down feels a sudden increase in counter-pressure as soon as the cable 4 is pressed between the feeler roller 19 and the counter-roller 22 . In this way, the operator receives a message that the delivery process is complete ( 2 ) and he can let go of the operating element 16. Thanks to the backstop, it is ensured that after the operating element 16 has been released, an undesired backward movement of the upper roller group 2 in the opposite direction to the closing direction s or upwards is prevented.
- a guide roller 37 is arranged at the front end of the first roller support 6 on the input side.
- the guide roller 37 has a larger roller diameter than the rollers 20.1 .. 20.7 for straightening the cable.
- the guide roller 37 is offset vertically slightly downwards relative to the rollers 20.1 .. 20.7, so that the guide roller 37 is positioned below the cable when the straightening device 1 is in the closed position.
- the guide roller 37 serves to facilitate the insertion of the cable 4 into the open straightener.
- the guide roller 37 makes it possible, for example, that the cable 4 can be tensioned by hand before and while the straightening apparatus 1 is being closed, so that it can be easily ensured that the cable is between all the rollers 20.1 .. 20.7, 21.1 ..21.6 comes to rest.
- the first roller support 6 for the Upper rollers 20.1 .. 20.7 has a guide section 38 extending in the vertical direction, which can be guided slidingly between two guide plates 39, 40 for the displacement movement in the s-direction along guide surface .
- the guide plates 39, 40 are part of the frame 8.
- the operating element 16 adjoins the guide section 38 of the first roller support 6 at the top.
- the already mentioned backstop is in 3 recognizable and marked there with 9.
- the backstop 9 includes a pinch roller 11 which is accommodated in a wedge gap 12 .
- the wedge gap 12 is a receptacle for the clamping roller 11 that tapers in relation to the closing direction s.
- the backstop 9 also includes a spring 13 for generating a preload for the clamping roller 11.
- the wedge effect can cause the clamping roller 11 pressed into the wedge gap to cause a return movement of the block the first roller supports 6 reliably.
- the clamping roller 11 is constantly pressed into the wedge gap 12 by means of the spring 13 and thus ensures reliable functioning of the backstop 9 .
- An unlocking element 41 can be seen below the pinch roller 11 . When this unlocking element 41 is pushed upwards against the pinch roller 11, it can push the pinch roller 11 upwards and thus cancel the clamping effect (cf 7 ).
- the button-shaped operating element 16 has a shaft 17 which is firmly connected to a driver 18 .
- the driver 18 adjoining the shaft 17 serves to advance the first roller support 6 when the operating element 16 is pressed.
- the driver 18 has a front end with respect to the closing direction s, which at least when closing contacts the first roller support 6 for advancement.
- a nose-like projection for forming the unlocking element 41 for releasing the blocking effect adjoins the driver 18, which is inserted into the wedge gap 12 from the side (cf. the following 6/7 ).
- the second roller support 7 is pivoted about the pivot axis 24 into an active position in order to generate a sufficient straightening effect, so that the input-side rollers 20.1, 21.1 act on the cable 4 more than the output-side rollers 20.7, 21.6.
- a pneumatic cylinder 33 By means of a pneumatic cylinder 33, the front side of the second roller support 7 on the input side pulled up what in figure 5 is indicated by an arrow z.
- the pneumatic cylinder 33 can easily set the desired angle of attack ⁇ by appropriate control.
- configurations of straightening devices would also be conceivable, in which the pivoting could be carried out manually using appropriate means.
- the straightening apparatus 1 can have a force-limiting device between the operating element 16 and the counter-roller 22, for example by the operating element 16 being at least indirectly connected to the counter-roller 22 via a spring (not shown) and the stroke of the operating element 16 being limited by a mechanical stop.
- figure 5 shows the straightener 1 in the active position after the second roller support 7 has been pivoted approaching towards the entrance of the upper roller group 2.
- the cable 4 should run approximately tangentially without being curved.
- the optimum setting of the rollers 20.7, 21.7 on the output side correlates with the outer diameter of the cable 4.
- the machine control In order to activate the straightener 1, the machine control (not shown) brings the lower roller group 3 into the active position, either after pressing a special button or automatically within a program sequence, in that the pneumatic cylinder 33 on the input side moves the lower roller group 3 to the upper roller group 3 .
- the restoration of the original starting position of the straightener 1 could also be done by pressing a button or set in motion automatically within a program sequence.
- the button or the program sequence could actuate a pneumatic valve or a switch of the machine control, whereupon the lower group of rollers 3 is moved back via the pneumatic cylinder 8 into the position parallel to the first group of rollers 2 .
- the machine control could also be designed in such a way that the activation of the pneumatic cylinder 8 for pivoting the lower roller group 3 back from the active position into the parallel neutral position could be triggered by pulling or possibly by pressing the button-shaped operating element 16 again.
- the counter-roller 22 is arranged relative to the contact roller 19 relative to the pivot axis 24 in such a way that the counter-roller 22 moves away from the contact roller 19 during this movement and the pressing or clamping of the cable 4 between the two rollers 19 and 22 is released.
- the position of the pivot axis 24 is approximately in the middle between the last lower roller 21.7 and the counter roller 22.
- the pivot axis 24 could also take other positions.
- the pivot axis 24 could be coaxial with the axis of rotation of the counter-roller 22 .
- pivot axis 24 instead of left as in the case of the Figures 1 to 8 shown embodiments, would be arranged to the right of the counter-roller 22, the distance between the rollers 19 and 22 would decrease during pivoting to create the active position and the cable 4 would be squeezed accordingly. It would also be conceivable for an additional pair of rollers (not shown) to be mounted downstream of the straightening apparatus for squeezing the cable on the cable processing machine.
- the wedge gap 12 is formed by a wedge-shaped contact surface 14 associated with the first roller support 6 and by a stationary mating surface associated with the frame 8 .
- This counter-surface is formed by a guide surface 34 assigned to the frame 8, along which the first roller support 6 can be guided during the closing process.
- the infeed device 5, with which the upper roller group 2 can be displaced against the lower roller group 3 to adjust the distance between the rollers 20.1 .. 20.6 and 21.1 .. 21.7 of the upper and lower roller groups 2 and 3, can also be motor-driven be.
- an actuator 35 is provided, with which the upper roller group 2 can be moved vertically downwards for the infeed process.
- the actuator can be a pneumatic drive, for example. If the manually operable control element 16 by the actuator 35, as in 8 shown, is replaced, the delivery process can be carried out in a cost-effective and process-reliable manner without the intervention of an operator.
- the straightening device 1 has contact fingers 23 for determining the closed position.
- the probing fingers 23 are assigned to the upper roller group 2 in the present case.
- the contact fingers 23 are each arranged opposite a roller 21.1 .. 21.6 of the lower roller group 3 in such a way that the cable 4 can be pressed between the respective contact finger 23 and the opposite roller 21.1 .. 21.6.
- the straightening apparatus 1 has six probing fingers 23; ie in the present example a contact finger 23 for each of the six lower rollers 21.1 .. 21.6.
- a carrier plate which carries the contact fingers 23, has elongated holes 36, so that the contact fingers 23 or the carrier plate are or is mounted on the first roller support 6 so that they can be displaced to a limited extent in the closing direction.
- FIGS. 10 to 12 relate to a further embodiment of a straightening apparatus 1, which is equipped with the backstop described above, but not shown here for the sake of simplicity.
- This straightening apparatus 1 is characterized by the special configuration of the infeed device 5 for carrying out the infeed process and the pivoting device 15 for creating the active position. The movement of both roller supports 6 and 7 takes place with the aid of a link control explained below.
- the straightening apparatus 1 has a push element 25 that can be moved linearly in the transport direction x, via which both the first roller support 6 with the upper rollers 20.1 .. 20.7 and the second roller support 7 with the lower rollers 21.1 .. 21.6 can be moved.
- the pushing element 25 can be actuated manually via a hand lever 26 .
- the pushing element 25 could also be connected to a drive for moving the pushing element 25 .
- the slotted link control includes a control body denoted by 30 which interacts with the feed slotted guide 27 and the opening slotted guide 28 .
- the control body 30 is supported on the first roller support 6 via a spring 42 .
- a pivoting link guide 29 for pivoting the second roller support 7 is arranged on the thrust element 25 , with the pivoting link guide 29 interacting with a spring-loaded control body 31 denoted by 31 .
- the pen to Generation of the spring load on the control body 31 is denoted by 43 .
- the spring 43 supports the control body 31 against the frame 8 of the straightener 1 at the top.
- the control body 31 is connected to the second roller support 7 via a lever 44 .
- the pivoting link guide 29 can be formed by a continuously rising control path or curve. It can be advantageous if the pivoting slotted link guide 29 is formed by a step-like control path with a plurality of receptacles 32 for the control body 31 . Such a connecting link guide 29 with a step-like designed control path for setting discrete angle of attack positions is in the embodiment according to FIG Figures 10 to 12 shown.
- the straightening apparatus 1 has the pusher element 25 with a hand lever 26 and the slotted guides 27, 28, 29.
- the pusher element 25 can be moved back and forth with the hand lever 26 relative to the frame 8.
- the link guide 27 controls the infeed process via the control body 30 designed as a roller, in which the upper roller group 2 is pushed down against the lower roller group 3 .
- this straightening apparatus 1 also has a contact roller 19 and a counter-roller 22 located opposite it. Alternatively, one or more probing fingers could also be used.
- the link guide 29 controls the pivoting process via the control body 30 designed as a roller, during which the angle of attack ⁇ of the lower roller group 3 is adjusted.
- the mechanism of the link control for infeed and pivoting is as follows: The starting point is in 10 shown open position. The pushing element 25 is pushed to the left. The control body 30 moving along the infeed link guide 27 presses the roller group 2 via the spring 42 in the closing direction s against the cable 4 until the cable 4 is clamped between the feeler roller 19 and the counter roller 22 . The delivery process is complete and the closed position is reached. The straightening device 1 in this closed position is in 11 shown.
- rollers 20.1, 21.1, 20.2, 20.3, .. are positioned at the entrance in such a way that the cable 4 has to move between the rollers in a wavy manner in such a way that the cable 4 passes through each next roller in is curved with decreasing intensity. If the pushing element 25 is now pushed further to the left, the spring 42 can relax and the spring (10) (not shown here), with which the first roller support 6 is supported on the frame 8, presses the roller group 2 into the backstop.
- the straightening apparatus 1 is correspondingly brought back into its open state or open position.
- the pivoting slotted guide 29 initially puts the lower roller group 3 back into the parallel neutral position via the control body 31 .
- the control body 30 moves along the opening link guide 28 and removes the backstop, whereupon the upper roller group 2 can be transferred to the open position.
- a tension spring could also be used instead of the lever 44, so that the angle of attack of the lower roller group 2 is influenced indirectly via the corresponding spring force.
- the contact roller 19 and counter roller 22 lying opposite one another could also be positioned further to the pivot axis 24 in such a way that they move towards one another when the upper roller group 3 is advanced. This achieves a squeezing effect that corresponds to that of a so-called pinch roller.
- the pivot axis 24 can, for example, be moved vertically by means of an adjusting screw or an eccentric.
- a device could also be attached to the straightening apparatus 1, which allows a shift between the frame 10 and the roller group 2.
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- Manufacturing Of Electrical Connectors (AREA)
Description
Die Erfindung betrifft einen Richtapparat zum Richten von Kabeln gemäss dem Oberbegriff von Anspruch 1. Der Richtapparat kann Bestandteil einer Kabelbearbeitungsmaschine sein. Solche Kabelbearbeitungsmaschinen werden für die Konfektionierung von Elektrokabeln verwendet. Bei der Konfektionierung von Kabeln können Kabel abgelängt und abisoliert und dann die Kabelenden gecrimpt werden. Die Kabelbearbeitungsmaschinen können weiter Tüllenstationen umfassen, bei denen die abisolierten Kabelenden vor dem Crimpen mit Tüllen bestückt werden.The invention relates to a straightening device for straightening cables according to the preamble of
Die Kabel, wie beispielsweise isolierte Litzen oder Vollleiter aus Kupfer oder Stahl, die auf einer Kabelbearbeitungsmaschine verarbeitet werden, werden üblicherweise in Fässern, auf Rollen oder als Bündel bereitgestellt und sind aus diesem Grund nach dem Abrollen mehr oder weniger stark gekrümmt und mit Drall versehen. Gerade gerichtete Kabel sind wichtig, um auf der Kabelbearbeitungsmaschine vorgesehen Prozessschritte wie Abisolieren, Crimpen und gegebenenfalls Bestücken mit Steckergehäusen zuverlässig ausführen zu können. Um die Kabel möglichst gerade zu richten, werden sie in der Regel mit Hilfe der in der Kabelbearbeitungsmaschine vorhandenen Antriebe durch einen am Einlauf der Maschine angebrachten Richtapparat gezogen.The cables, such as insulated strands or solid conductors made of copper or steel, which are processed on a cable processing machine, are usually provided in barrels, on rolls or as a bundle and are therefore more or less strongly curved and twisted after unwinding. Straightened cables are important in order to be able to reliably carry out process steps such as stripping, crimping and, if necessary, fitting with connector housings on the cable processing machine. In order to straighten the cables as much as possible, they are usually pulled through a straightening apparatus attached to the infeed of the machine with the aid of the drives present in the cable processing machine.
Die Druckschrift
Ein Richtapparat ist beispielsweise aus der
Es ist eine Aufgabe der vorliegenden Erfindung, die Nachteile des Bekannten zu vermeiden und insbesondere einen verbesserten Richtapparat der eingangs genannten Art zu schaffen. Diese Aufgabe wird erfindungsgemäss mit einer Richtapparat mit den Merkmalen des Anspruchs 1 gelöst.It is an object of the present invention to avoid the disadvantages of the known art and in particular to provide an improved straightening apparatus of the type mentioned at the outset. According to the invention, this object is achieved with a straightening apparatus having the features of
Der Richtapparat zum Richten von Kabeln umfasst einer erste, mehrere Rollen aufweisenden Rollengruppe und eine der ersten Rollengruppe gegenüberliegende zweite, mehrere Rollen aufweisende Rollengruppe, wobei das Kabel in einer Transportrichtung alternierend jeweils zwischen den Rollen der ersten Rollengruppe und den Rollen der zweiten Rollengruppe durchführbar ist. Der Richtapparat umfasst weiter eine beispielsweise manuell betätigbare oder motorisch antreibbare Zustelleinrichtung, mit der die erste Rollengruppe gegen die zweite Rollengruppe verschiebbar ist. Dadurch, dass der Richtapparat Sicherungsmittel zum lagemässigen Sichern der ersten Rollengruppe umfasst, kann der Rollenabstand präzise eingestellt werden. Das Zustellen, also der Vorgang, bei dem die erste Rollengruppe von einer Offenstellung in eine Schliessstellung gebracht wird, kann auf effiziente Weise durchgeführt werden.The straightening device for straightening cables comprises a first group of rollers having several rollers and a second group of rollers opposite the first group of rollers and having several rollers, with the cable being able to be passed through in a transport direction alternately between the rollers of the first roller group and the rollers of the second roller group. The straightening apparatus further comprises an infeed device that can be actuated manually or driven by a motor, for example, with which the first group of rollers can be displaced against the second group of rollers. Because the straightening apparatus includes securing means for securing the position of the first group of rollers, the distance between the rollers can be set precisely. The delivery, ie the process in which the first roller group is brought from an open position to a closed position, can be carried out in an efficient manner.
Dank der Zustelleinrichtung kann die erste Rollengruppe ausgehend von der Offenstellung in Schliessrichtung, die quer und bevorzugt rechtwinklig zur Transportrichtung verläuft, gegen die zweite Rollengruppe zum Einstellen des Abstands zwischen den Rollen der ersten und der zweiten Rollengruppe verschoben werden. Die Offenstellung ist dabei die Stellung, in der die Rollen der der ersten und der zweiten Rollenreihe soweit voneinander beabstandet sind, so dass das Kabel zwischen die Rollen eingeführt werden kann. Die Schliessstellung ist die Stellung nach Beendigung der Verschiebebewegung; der Zustellvorgang ist abgeschlossen. In der Schliessstellung berühren die Rollen der der ersten und der zweiten Rollengruppe das ideale Kabel derart, dass es einen geraden und nicht einen wellenförmigen Verlauf hat.Thanks to the infeed device, the first group of rollers can be moved from the open position in the closing direction, which runs transversely and preferably at right angles to the transport direction, against the second group of rollers to adjust the distance between the rollers of the first and second group of rollers. The open position is the position in which the rollers of the first and second rows of rollers are spaced far enough apart that the cable can be inserted between the rollers. The closed position is the position after the sliding movement has ended; the delivery process is complete. In the closed position, the rollers of the first and second roller groups touch the ideal cable in such a way that it has a straight and not a wavy course.
Der Richtapparat kann einen ersten Rollensupport für die erste Rollengruppe, an welchem die Rollen der ersten Rollengruppe frei drehbar befestigt sind und einen zweiten Rollensupport für die zweite Rollengruppe, an welchem die Rollen der zweiten Rollengruppe frei drehbar befestigt sind, aufweisen. Weiter kann der Richtapparat ein Gestell, beispielsweise in Form einer Grundplatte, zum Tragen des ersten und des zweiten Rollensupports aufweisen, wobei der erste Rollensupport in Schliessrichtung verschiebbar im Gestell gelagert ist.The straightening apparatus may comprise a first roller support for the first roller group to which the rollers of the first roller group are freely rotatably mounted and a second roller support for the second roller group to which the rollers of the second roller group are freely rotatably mounted. Furthermore, the straightening apparatus can have a frame, for example in the form of a base plate, for carrying the first and the second roller support, the first roller support being mounted in the frame so that it can be displaced in the closing direction.
Der Richtapparat zum Bilden der Sicherungsmittel umfasst eine Rücklaufsperre, die beim Zustellvorgang eine Rückwärtsbewegung der ersten Rollengruppe entgegen der Schliessrichtung sperrt. Der Richtapparat lässt sich dank der Rücklaufsperre bezüglich des Zustellvorgangs zuverlässig, ergonomisch und effizient betreiben.The straightening apparatus for forming the securing means includes a return lock, which blocks a reverse movement of the first roller group counter to the closing direction during the infeed process. Thanks to the backstop, the straightening device can be operated reliably, ergonomically and efficiently with regard to the infeed process.
Hierzu können diskrete Rücklaufsperren wie beispielsweise auf einem Ratschenmechanismus basierende Rücklaufsperren vorgesehen werden. Ein solcher Ratschenmechanismus kann zum Beispiel eine Verzahnung sowie eine damit zusammenwirkende Sperrklinke umfassen. Beim Ratschenmechanismus wären allerdings pilgerschrittförmige Bewegungen möglich. Vorteilhaft ist daher, dass die Zustelleinrichtung des Richtapparats eine stufenlose Rücklaufsperre umfasst. Stufenlose Rücklaufsperren haben den Vorteil, dass sie praktisch alle unerwünschten Rückbewegungen verhindern können.For this purpose, discrete backstops such as backstops based on a ratchet mechanism can be provided. Such a ratchet mechanism can, for example, comprise teeth and a pawl which interacts therewith. With the ratchet mechanism, however, pilgrim step-like movements would be possible. It is therefore advantageous that the infeed device of the straightening apparatus includes a stepless backstop. Infinitely variable backstops have the advantage of being able to prevent virtually all unwanted reverse movement.
Die vorerwähnte Rücklaufsperre kann als formschlüssig wirkende Rücklaufsperre ausgestaltet sein. Die Rücklaufsperre kann auch als kraftschlüssig wirkende Rücklaufsperre ausgestaltet sein. Neben mechanischen Rücklaufsperren sind auch andere Rücklaufsperren denkbar. Die Rücklaufsperre könnte ein Hydraulikzylinder sein; wenn der Rollensupport sich zurückbewegen will, wird das Ausströmen von Hydrauliköl aus dem Hydraulikzylinder durch Rückschlagventile verhindert und so die Rücklaufsperre wirksam.The aforementioned backstop can be configured as a positively acting backstop. The backstop can also be designed as a non-positively acting backstop. In addition to mechanical backstops, other backstops are also conceivable. The backstop could be a hydraulic cylinder; if the roller support wants to move back, the outflow of hydraulic oil from the hydraulic cylinder is prevented by non-return valves and the backstop is thus effective.
Vorteilhaft ist es weiter, wenn der erste Rollensupport durch ein Federelement, insbesondere eine Schraubendruckfeder, am Gestell abgestützt ist, die den ersten Rollensupport mit einer Federkraft entgegen der Schliessrichtung beaufschlägt. Ein sicheres Funktionieren der Rücklaufsperre lässt sich so auf einfache Weise gewährleisten.It is also advantageous if the first roller support is supported on the frame by a spring element, in particular a helical compression spring, which acts on the first roller support with a spring force counter to the closing direction. Safe functioning of the backstop can thus be guaranteed in a simple manner.
Die Rücklaufsperre kann einen Klemmkörper und insbesondere eine Klemmrolle umfassen, wobei der Klemmkörper bzw. die Klemmrolle in einem Keilspalt aufgenommen ist. Der Keilspalt kann ein in Bezug auf die Schliessrichtung sich verjüngende Aufnahme für den Klemmkörper sein. Durch die Keilwirkung kann der in den Keilspalt gedrückte Klemmkörper eine Rückbewegung des ersten Rollensupports zuverlässig blockieren.The backstop can comprise a clamping body and in particular a clamping roller, the clamping body or the clamping roller being accommodated in a wedge gap. The wedge gap can be a receptacle for the clamping body that tapers in relation to the closing direction. Due to the wedge effect, the clamping body pressed into the wedge gap can reliably block a return movement of the first roller support.
Die Rücklaufsperre kann eine Feder zum Erzeugen einer Vorspannung für den Klemmkörper, insbesondere der Klemmrolle, umfassen. Der so federbelastete Klemmkörper wird der Klemmkörper dauernd in den Keilspalt gedrückt und stellt so ein zuverlässiges Funktionieren der Rücklaufsperre sicher.The backstop can include a spring for generating a preload for the clamping body, in particular the clamping roller. The spring-loaded clamping body is constantly pressed into the wedge gap and thus ensures reliable functioning of the backstop.
Der erste Rollensupport kann eine keilförmige Anlauffläche aufweisen, die zusammen mit einer stationären Gegenfläche den Keilspalt bildet. Die stationäre Gegenfläche kann beispielsweise durch eine dem Gestell zugeordnete Führungsfläche gebildet werden, an der der erste Rollensupport beim Schliessvorgang entlang führbar ist.The first roller support can have a wedge-shaped contact surface which, together with a stationary counter surface, forms the wedge gap. The stationary counter-surface can be formed, for example, by a guide surface assigned to the frame, along which the first roller support can be guided during the closing process.
Alternative Rücklaufsperren könnten zwei Keile umfassen, wobei die Keile gegenläufig zueinander gerichtete, schräg verlaufende Keilflächen aufweisen, die, wenn eine Rückbewegung erfolgen würde, aneinandergedrückt werden und so die Rückbewegung verhindern. Weitere alternative Rücklaufsperren könnten Exzenterkörper umfassen.Alternative backstops could include two wedges, the wedges having oppositely directed, sloping wedge surfaces which, if reverse movement were to occur, would be urged together preventing reverse movement. Other alternative backstops could include eccentric bodies.
Der Richtapparat kann eine manuell betätigbare Zustelleinrichtung mit einem linear in Schliessrichtung bewegbaren Bedienelement insbesondere in Form eines Knopfes aufweisen, über welches beispielsweise durch Drücken des Bedienelements der erste Rollensupport bzw. die erste Rollengruppe in Schliessrichtung verschobenen werden kann. Ein solcher Richtapparat zeichnet sich durch eine einfache Handhabung und gute Ergonomie aus. Für das Zustellen muss das Bedienelement lediglich gedrückt werden. Ein Schnellspannhebel zum schnellen Schliessen ist auch nicht erforderlich.The straightening apparatus can have a manually operable infeed device with an operating element that can be moved linearly in the closing direction, in particular in the form of a button, via which the first roller support or the first roller group can be displaced in the closing direction, for example by pressing the operating element. Such a straightening apparatus is characterized by easy handling and good ergonomics. The control element only has to be pressed to deliver. A quick-release lever for quick closing is also not required.
Am Bedienelement kann ein Mitnehmer zum Vorschieben des ersten Rollensupports anschliessen. Der Mitnehmer kann an einen Schaft des Bedienelements anschliessen oder durch den Schaft selbst gebildet sein. Der Schaft ist ein in Schliessrichtung sich erstreckendes, längliches Bauteil. Der Mitnehmer oder der Schaft kann im Gestell gleitend gelagert sein und lässt sich in Schliessrichtung (sowie gegebenenfalls in die Gegenrichtung) bewegen. Der Mitnehmer stösst, wenn er durch Drücken des knopfartigen Bedienelements oder wenn er auf andere Weise in Schliessrichtung bewegt wird, an den ersten Rollensupport an und verschiebt so den ersten Rollensupport in Schliessrichtung. Auch ein Richtapparat mit einer motorisch antreibbaren Zustelleinrichtung kann über einen solchen Mitnehmer verfügen.A driver for advancing the first roll support can be connected to the operating element. The driver can connect to a shank of the operating element or be formed by the shank itself. The shank is one in the closing direction extending, elongate member. The driver or the shaft can be slidably mounted in the frame and can be moved in the closing direction (and optionally in the opposite direction). When it is moved in the closing direction by pressing the button-like operating element or when it is moved in some other way, the driver pushes against the first roller support and thus displaces the first roller support in the closing direction. A straightening apparatus with an infeed device that can be driven by a motor can also have such a driver.
Bevorzugt ist die Rücklaufsperre als lösbare Rücklaufsperre ausgestaltet. Hierzu kann zum Lösen der Sperrwirkung der Rücklaufsperre ein Entriegelungselement vorgesehen sein.The backstop is preferably designed as a releasable backstop. For this purpose, an unlocking element can be provided to release the blocking effect of the backstop.
Am Mitnehmer kann ein Entriegelungselement zum Lösen der Sperrwirkung angeordnet oder mit dem Mitnehmer verbunden sein. Dabei ist der Mitnehmer mit dem Entriegelungselement derart ausgestaltet, dass bei einer Rückführbewegung, also bei einer Bewegung in Gegenrichtung zur Schliessrichtung, das Entriegelungselement mit dem Klemmkörper in Anschlag bringbar ist. Das Entriegelungselement kann ein vom Mitnehmer oder vom Schaft wegragender, nasenartiger Vorsprung.An unlocking element for releasing the blocking effect can be arranged on the driver or can be connected to the driver. The driver with the unlocking element is designed in such a way that during a return movement, ie during a movement in the opposite direction to the closing direction, the unlocking element can be brought into abutment with the clamping body. The unlocking element can be a nose-like projection projecting away from the driver or the shaft.
Zum Lösen der Sperrwirkung kann das Entriegelungselement den Klemmkörper wegdrücken, so dass der Klemmkörper die keilförmige Anlauffläche des Keilspalts nicht mehr kontaktiert, also keine Klemmung mehr vorliegt.To release the blocking effect, the unlocking element can push the clamping body away, so that the clamping body no longer contacts the wedge-shaped contact surface of the wedge gap, that is to say there is no longer any clamping.
Das Lösen der Sperrwirkung kann durch Ziehen des knopfartigen Bedienelements erwirkt werden. Diese Lösung zeichnet sich durch eine einfache Handhabung aus.The blocking effect can be released by pulling the button-like operating element. This solution is characterized by its easy handling.
Zum Lösen der Sperrwirkung könnte auch andere Mittel eingesetzt werden. Beispielsweise könnte es auch vorteilhaft sein, nicht auch noch das vorerwähnte Bedienelement zum Schliessen des Richtapparats für den Öffnungsvorgang zu verwenden. Wenn separate Mittel zum Lösen der Sperrwirkung verwendet werden, könnten Fehlmanipulationen am Bedienelement, welche in einem unabsichtlichen Lösen der Sperrwirkung resultieren, ausgeschlossen werden.Other means could also be used to release the locking effect. For example, it could also be advantageous not to also use the aforementioned operating element for closing the straightening device for the opening process. If separate means are used to release the blocking effect, incorrect manipulation of the control element, which would result in an unintentional release of the blocking effect, could be ruled out.
Der Richtapparat muss nicht unbedingt über eine manuell betätigbare Zustelleinrichtung verfügen. Für bestimmte Anwendungsbereiche kann es vorteilhaft sein, wenn der Richtapparat eine antreibbare Zustelleinrichtung mit einem Linear-Direktantrieb, einem Pneumatikzylinder oder einem Hydraulikzylinder zum Bewegen des ersten Rollensupport in Schliessrichtung aufweist. Derartige Zustelleinrichtungen können einfach angesteuert werden und automatisch oder halbautomatisch betrieben werden.The straightening apparatus does not necessarily have to have an infeed device that can be actuated manually. For certain areas of application, it can be advantageous if the straightening apparatus has a drivable infeed device with a linear direct drive, a Having pneumatic cylinders or a hydraulic cylinder for moving the first roller support in the closing direction. Such infeed devices can be controlled easily and operated automatically or semi-automatically.
In einer weiteren Ausführungsform kann der Richtapparat zum Festlegen der Schliessstellung eine Antastrolle aufweisen, wobei die Antastrolle in Bezug auf die Transportrichtung ausgangsseitig an die erste Rollengruppe folgend angeordnet ist, und wobei das Kabel zwischen der Antastrolle und einer der zweiten Rollengruppe zugeordneten, der Antastrolle gegenüberliegenden Gegenrolle pressbar ist.In a further embodiment, the straightening apparatus for determining the closed position can have a contact roller, with the contact roller being arranged on the output side following the first roller group in relation to the transport direction, and with the cable between the contact roller and a counter roller assigned to the second roller group and located opposite the contact roller is pressable.
Alternativ kann der Richtapparat zum Festlegen der Schliessstellung wenigstens einen und vorzugsweise mehrere, vorzugsweise in Schliessrichtung begrenzt verschiebbar gelagerte Antastfinger aufweisen, wobei der wenigstens eine Antastfinger einer der Rollengruppen und insbesondere der ersten Rollengruppe zugeordnet ist. Dabei kann der Antastfinger jeweils derart gegenüberliegend einer Rolle der anderen Rollengruppe, insbesondere der zweiten Rollengruppe angeordnet sein, dass das Kabel zwischen dem jeweiligen Antastfinger und der gegenüberliegenden Rolle pressbar ist. Die Antastfinger können derart ausgestaltet sein, dass sie nach Festlegen der Schliessstellung durch Verschieben in Gegenrichtung zur Schliessrichtung in eine Ruhestellung bringbar sind, so dass sie das Kabel nicht mehr beaufschlagen.Alternatively, the straightening apparatus for determining the closed position can have at least one and preferably several contact fingers that are preferably mounted so that they can be displaced to a limited extent in the closing direction, the at least one contact finger being assigned to one of the roller groups and in particular to the first roller group. The contact finger can be arranged opposite a roller of the other group of rollers, in particular the second group of rollers, in such a way that the cable can be pressed between the respective contact finger and the roller opposite. The probing fingers can be designed in such a way that, after the closed position has been determined, they can be brought into a rest position by displacement in the opposite direction to the closing direction, so that they no longer act on the cable.
Zum weiteren Erzeugen der Richtwirkung des Kabels nach Beendigung des Zustellvorgangs ist es vorteilhaft, wenn der zweite Rollensupport um eine Schwenkachse drehbar am Gestell gelagert ist und dass der Richtapparat eine beispielsweise manuell betätigbare oder motorisch antreibbare Verschwenkeinrichtung verfügt, mit welcher zum Einstellen des Anstellwinkels zwischen den Rollen der ersten und der zweiten Rollengruppe die zweite Rollengruppe ausgehend vorzugsweise von einer Neutralstellung in eine Aktivstellung schwenkbar ist.To further generate the straightening effect of the cable after the end of the feed process, it is advantageous if the second roller support is mounted on the frame so that it can rotate about a pivot axis and if the straightening apparatus has a pivoting device that can be actuated manually or driven by a motor, for example, with which to adjust the angle of attack between the rollers the first and the second group of rollers, the second group of rollers can preferably be pivoted from a neutral position into an active position.
Der zweite Rollensupport kann besonders bevorzugt derart drehbar am Gestell gelagert sein, dass durch das Verschwenken des zweiten Rollensupports die eingangsseitigen Rollen stärker als die ausgangsseitigen Rollen auf das Kabel einwirken. Die Verschwenkeinrichtung kann zum Beispiel eine Einrichtung sein, wie sie an sich schon aus der
In einer Ausführungsform kann eine Kulissensteuerung für die Bewegung des ersten Rollensupports und/oder des zweiten Rollensupports vorgesehen sein.In one embodiment, a gate control can be provided for the movement of the first roller support and/or the second roller support.
Für die Kulissensteuerung kann ein linear bewegbares Schubelement vorgesehen sein, über welches sowohl der erste Rollensupport als auch der zweite Rollensupport bewegt werden kann. Das Schubelement kann manuell betätigbar oder motorisch antreibbar ausgestaltet sein. In dieser Ausführungsform lassen sich die beiden Richtparameter (Rollenabstand, Anstellwinkel) in einem einzigen gemeinsamen Arbeitsschritt bzw. Betätigungsbewegung einstellen.A linearly movable pusher element can be provided for the gate control, via which both the first roller support and the second roller support can be moved. The pushing element can be designed to be manually actuated or motor-driven. In this embodiment, the two straightening parameters (roller spacing, angle of attack) can be set in a single common work step or actuating movement.
Der Richtapparat kann ein manuell betätigbares, vorzugsweise in Transportrichtung hin und her bewegbares Schubelement mit einem Handhebel aufweisen.The straightening apparatus can have a push element with a hand lever that can be actuated manually and can preferably be moved back and forth in the transport direction.
Am Schubelement kann eine Zustell-Kulissenführung zum Verschieben des ersten Rollensupports in Schliessrichtung und eine Öffnungs-Kulissenführung zum Lösen der Sperrwirkung und zum Zurückführen des ersten Rollensupports angeordnet sein. Dabei kann ein erster, federbelasteter Steuerkörper mit der Zustell-Kulissenführung und der Öffnungs-Kulissenführung zusammenwirken. Am Schubelement kann eine Verschwenk-Kulissenführung zum Verschwenken des zweiten Rollensupports angeordnet sein. Dabei kann ein zweiter, federbelasteter Steuerkörper mit der Verschwenk-Kulissenführung zusammenwirken.An infeed link guide for moving the first roller support in the closing direction and an opening link guide for releasing the blocking effect and for returning the first roller support can be arranged on the pushing element. A first, spring-loaded control body can interact with the feed link guide and the opening link guide. A pivoting link guide for pivoting the second roller support can be arranged on the pushing element. A second, spring-loaded control body can interact with the pivoting link guide.
Die Verschwenk-Kulissenführung kann zum Einstellen von diskreten Anstellwinkel-Positionen durch eine stufenartig ausgestaltete Steuerbahn mit vorzugsweise mehreren Aufnahmen für den Steuerkörper gebildet sein. Dies ermöglicht ein besonders schnelles Einstellen des Anstellwinkels. Eine solche Verschwenk-Kulissenführung könnte auch bei konventionellen Richtapparaten, d.h. bei Richtapparaten ohne Rücklaufsperre oder anderen Sicherungsmittel zum lagemässigen Sichern der mittels der Zustelleinrichtung verschobenen ersten Rollengruppe, eingesetzt werden.For setting discrete angle of attack positions, the pivoting link guide can be formed by a step-like control path with preferably a plurality of receptacles for the control body. This enables the angle of attack to be adjusted particularly quickly. Such a pivoting link guide could also be used with conventional straighteners, i.e. with straighteners without a backstop or other securing means for securing the position of the first roller group that has been shifted by means of the infeed device.
Weitere Vorteile und Einzelmerkmale ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen und aus den Zeichnungen. Es zeigen:
- Fig. 1
- eine perspektivische Darstellung eines erfindungsgemässen Richtapparats zum Richten von Kabeln in einer Offenstellung,
- Fig. 2
- der Richtapparat in einer Schliessstellung,
- Fig. 3
- eine Rückansicht des Richtapparats in der Schliessstellung,
- Fig. 4
- einen Querschnitt durch den Richtapparat in der Schliessstellung (Schnittdarstellung entlang Schnittlinie A - A gemäss
Fig. 3 ), - Fig. 5
- eine perspektivische Darstellung des Richtapparats in einer Aktivstellung,
- Fig. 6
- einen Querschnitt durch den noch geschlossenen Richtapparat, jedoch mit einer gelösten Rücklaufsperre,
- Fig. 7
- eine vergrösserte Detaildarstellung der Rückansicht des Richtapparats in der Schliessstellung mit der gelösten Rücklaufsperre aus
Fig. 6 , - Fig. 8
- eine perspektivische Darstellung eines alternativen Richtapparats in einer Aktivstellung,
- Fig. 9
- eine Vorderansicht eines Richtapparats gemäss eines dritten Ausführungsbeispiels, wobei der Richtapparat sich in einer Schliessstellung befindet,
- Fig. 10
- eine vereinfachte Darstellung eines Längsschnittes durch einen weiteren Richtapparat in einer Offenstellung,
- Fig. 11
- der Richtapparat gemäss dem Ausführungsbeispiel von
Fig. 10 in einer Schliessstellung, und - Fig. 12
- der Richtapparat in einer Aktivstellung.
- 1
- a perspective view of a straightening device according to the invention for straightening cables in an open position,
- 2
- the straightener in a closed position,
- 3
- a rear view of the straightening device in the closed position,
- 4
- a cross-section through the straightener in the closed position (section along section line A - A according to
3 ), - figure 5
- a perspective view of the straightening apparatus in an active position,
- 6
- a cross section through the still closed straightener, but with a released backstop,
- 7
- an enlarged detailed representation of the rear view of the straightener in the closed position with the released
backstop 6 , - 8
- a perspective view of an alternative straightening apparatus in an active position,
- 9
- a front view of a straightening apparatus according to a third embodiment, the straightening apparatus being in a closed position,
- 10
- a simplified representation of a longitudinal section through another straightening apparatus in an open position,
- 11
- the straightener according to the embodiment of
10 in a closed position, and - 12
- the straightening apparatus in an active position.
Die oberen Rollen 20.1 bis 20.7 und die unteren Rollen 21.1 bis 21.6 verlaufen parallel zueinander und liegen jeweils auf horizontalen Rollenlinien. Das (in
Die hier gezeigte grundsätzliche Anordnung und Ausrichtung der Rollengruppen 2 und 3 betreffen Ausführungsformen des erfindungsgemässen Richtapparats 1. Selbstverständlich sind auch andere Anordnungen und Ausrichtungen der Rollengruppen 2 und 3 denkbar. Zum Beispiel könnten die beiden Rollengruppen 2 und 3 auch nebeneinander angeordnet sein; die Schliessrichtung s würde in diesem Fall auf einer horizontalen Ebene verlaufen.The basic arrangement and orientation of the
Der nachfolgend im Detail beschriebene Richtapparat 1 kann in einer (nicht dargestellten) Kabelbearbeitungsmaschine zum Konfektionieren von Kabeln eingesetzt werden. Mit der Kabelbearbeitungsmaschine können Elektrokabel, beispielsweise isolierte Litzen oder isolierte Vollleiter aus Kupfer oder Stahl, verarbeitet werden. Die zu verarbeitenden Kabel werden in Fässern auf Rollen oder als Bündel bereitgestellt. Die aus Fässern, Rollen oder Bündel der Kabelbearbeitungsmaschine zugeführten Kabel sind mehr oder weniger stark gekrümmt und mit Drall versehen. Das Kabel muss daher gerade gerichtet werden, wozu der eingangs erwähnte Richtapparat 1 dient.The straightening
Die Kabelbearbeitungsmaschine kann beispielhaft als Schwenkmaschine ausgeführt sein, die eine Schwenkeinheit mit einem Kabelgreifer aufweist. Zum Zuführen der Kabelenden zu Bearbeitungsstationen, wie etwa eine Tüllenstation und eine Crimpstation, muss die Schwenkeinheit um eine vertikale Achse gedreht werden. Eine Abläng- und Abisolierstation ist in der Regel auf der Maschinenlängsachse der Kabelbearbeitungsmaschine angeordnet. Die Kabelbearbeitungsmaschine umfasst sodann eine Zuführeinheit mit einem zum Beispiel als Bandförderer ausgestalteten Kabelfördermittel, welches die Kabel in Transportrichtung entlang der Maschinenlängsachse zur Schwenkeinheit bringt. Der Richtapparat 1 ist in der Kabelbearbeitungsmaschine dem Bandförderer vorgelagert auf der Maschinenlängsachse angeordnet. Beim Zuführen des Kabels zur Schwenkeinheit wird das Kabel durch den Richtapparat 1 zum Richten des Kabels 4 gezogen.The cable processing machine can be designed, for example, as a pivoting machine that has a pivoting unit with a cable gripper. In order to feed the cable ends to processing stations such as a boot station and a crimping station, the swivel unit must be rotated about a vertical axis. A cutting and stripping station is usually arranged on the machine longitudinal axis of the cable processing machine. The cable processing machine then includes a feed unit with a cable conveyor designed, for example, as a belt conveyor, which brings the cable in the transport direction along the longitudinal axis of the machine to the pivoting unit. The
Die Rollen 20.1 .. 20.7 der ersten bzw. oberen Rollengruppe 2 sind frei drehbar an einem ersten Rollensupport 6 befestigt. Die Rollen 21.1 .. 21.6 der unteren bzw. zweiten Rollengruppe 2 sind frei drehbar an einem zweiten Rollensupport 7 befestigt. Der Richtapparat umfasst weiter ein Gestell 8 in Form einer Grundplatte zum Tragen des ersten und des zweiten Rollensupports 6 und 7 auf. Die Rollensupporte 6, 7 sind vorliegend plattenartig ausgestaltet.The rollers 20.1 .. 20.7 of the first or
Der erste Rollensupport 6 mit den oberen Rollen 20.1 .. 20.7 ist in Schliessrichtung s verschiebbar im Gestell 8 gelagert. Der zweite Rollensupport 6 mit den unteren Rollen 21.1 .. 21.6 ist in Bezug auf eine mit 24 angedeutete horizontale, im rechten Winkel zur Transportrichtung verlaufende Schwenkachse drehbar im Gestell 8 gelagert. Der grundsätzliche Aufbau des Richtapparats 1 ähnelt dem aus der
Die Zustelleinrichtung 5 ist manuell betätigbar ausgestaltet und umfasst ein linear in Schliessrichtung s bewegbares Bedienelement 16. Der erste Rollensupport 6 ist durch ein Federelement 10 in Form einer Schraubendruckfeder am Gestell 8 abgestützt, die den ersten Rollensupport 6 mit einer Federkraft entgegen der Schliessrichtung s beaufschlägt. Durch Drücken des Bedienelements 16 kann der ersten Rollensupport 6 mit den oberen Rollen 20.1 .. 20.7 nach unten verschobenen werden. Das Bedienelement 16 wird soweit hinuntergedrückt werden, bis die Rollen 20.1 .. 20.7 und 21.1 .. 21.6 das Kabel berühren.The
Für das Zustellen muss das Bedienelement 16 lediglich gedrückt werden, wodurch sich eine besonders einfache und ergonomische Handhabung ergibt. Der zweite Rollensupport 7 mit der unteren Rollengruppe 3 wird während dem Zustellvorgang nicht bewegt. Dazu wird die untere Rollengruppe 3 durch eine Maschinensteuerung über ein pneumatisches Ventil und einen Pneumatikzylinder 33 in einer zur oberen Rollengruppe 2 parallelen Lage, die einer Neutralstellung entspricht, gehalten.For delivery, the operating
Das Bedienelement 16 hat vorliegend beispielhaft die Form eines Knopfes. Selbstverständlich wären auch andere Formgebungen für das Bedienelement 16 denkbar. Beispielsweise könnte das Bedienelement 16 einen bügelartigen Griff aufweisen.The
Zum lagemässigen Sichern der mittels der Zustelleinrichtung 5 in Schliessrichtung s verschobenen oberen Rollengruppe 2 umfasst der Richtapparat 1 eine Rücklaufsperre (9, siehe nachfolgende
Am ersten Rollensupport 6 ist weiterhin eine frei drehbare Antastrolle 19 angeordnet. Die Antastrolle 19 ist in Bezug auf die Transportrichtung x ausgangsseitig an die obere Rollengruppe 2 folgend angeordnet und dient zum Festlegen der Schliessstellung. Auf der der Antastrolle 19 gegenüberliegenden Seite ist eine Gegenrolle 22 am zweiten Rollensupport 7 vorgesehen. Wenn ausgehend von der Offenstellung (
Wie aus
Der Bediener, der das Bedienelement 16 nach unten drückt, spürt einen sprunghaft ansteigenden Gegendruck, sobald das Kabel 4 zwischen der Antastrolle 19 und Gegenrolle 22 gepresst ist. So erhält der Bediener den Hinweis, dass der Zustellvorgang abgeschlossen ist (
Am eingangsseitig vorderen Ende des ersten Rollensupports 6 ist eine Führungsrolle 37 angeordnet. Die Führungsrolle 37 weist gegenüber den Rollen 20.1 .. 20.7 zum Richten des Kabels einen grösseren Rollendurchmesser auf. Die Führungsrolle 37 ist gegenüber den Rollen 20.1 .. 20.7 vertikal etwas nach unten versetzt angeordnet, so dass die Führungsrolle 37, wenn der Richtapparat 1 sich in der Schliessstellung befindet, unterhalb des Kabels positioniert ist. Die Führungsrolle 37 dient dazu, das Einlegen des Kabels 4 in den geöffneten Richtapparat zu erleichtern. Die Führungsrolle 37 ermöglicht es beispielsweise, dass das Kabel 4 von Hand gespannt werden kann, bevor und während der Richtapparat 1 geschlossen wird, so dass einfach sichergestellt werden kann, dass das Kabel beim Schliessen zwischen alle Rollen 20.1 .. 20.7, 21.1 ..21.6 zu liegen kommt.A
Die schon erwähnte Rücklaufsperre ist in
Weitere konstruktive Details des Richtapparats 1 sind aus
Nach Beendigung des Zustellvorgangs wird zum Erzeugen einer ausreichenden Richtwirkung der zweite Rollensupport 7 um die Schwenkachse 24 in eine Aktivstellung verschwenkt, so dass die die eingangsseitigen Rollen 20.1, 21.1 stärker als die ausgangsseitigen Rollen 20.7, 21.6 auf das Kabel 4 einwirken. Dazu wird mittels eines Pneumatikzylinders 33 die eingangsseitig vordere Seite des zweite Rollensupport 7 nach oben gezogen, was in
Um zu verhindern, dass beim Antasten des Kabels durch die Antastrolle und die Gegenrolle während des Zustellvorgangs das Kabel 4 durch übermässige Krafteinwirkung durch den Benutzer gequetscht wird, kann der Richtapparat 1 über eine Vorrichtung zur Kraftbegrenzung zwischen dem Bedienelement 16 und der Gegenrolle 22 verfügen, beispielsweise, indem das Bedienelement 16 über eine (nicht dargestellte) Feder mit der Gegenrolle 22 wenigstens indirekt verbunden ist und der Hub des Bedienelements 16 mit einem mechanischen Anschlag limitiert wird.In order to prevent the
Um den Richtapparat 1 zu aktivieren, bringt die (nicht dargestellte) Maschinensteuerung, entweder nach dem Drücken einer speziellen Taste oder selbsttätig innerhalb eines Programmablaufs, die untere Rollengruppe 3 in die Aktivstellung, indem der Pneumatikzylinder 33 eingangsseitig die untere Rollengruppe 3 zur oberen Rollengruppe 3 bewegt. Das Wiederherstellen der ursprünglichen Ausgangsstellung des Richtapparats 1 könnte ebenfalls durch Betätigen einer Taste erfolgen oder selbsttätig innerhalb eines Programmablaufs in Gang gesetzt werden. Die Taste oder der Programmablauf könnte ein pneumatisches Ventil oder einen Schalter der Maschinensteuerung betätigen, worauf die untere Rollengruppe 3 über den Pneumatikzylinder 8 zurück in die zur ersten Rollengruppe 2 parallele Lage bewegt wird. Die Maschinensteuerung könnte auch derart ausgestaltet sein, dass die Aktivierung des Pneumatikzylinders 8 zum Zurückschwenken der unteren Rollengruppe 3 von der Aktivstellung in die parallele Neutralstellung, durch durch Ziehen oder gegebenenfalls durch nochmaliges Drücken des knopfförmigen Bedienelements 16 ausgelöst werden könnte.In order to activate the
Aus
Die Schwenkachse 24 könnte auch andere Positionen einnehmen. Beispielsweise könnte die Schwenkachse 24 koaxial mit der Drehachse der Gegenrolle 22 sein. Weiterhin wäre es denkbar, die Schwenkachse 24 bzw. die Rollen 19 und 22 derart im Richtapparat anzuordnen, dass sie beim Verschwenken der unteren Rollengruppe 3 aufeinander zubewegen und so eine leichte Quetschwirkung auf das Kabel bewirken. Das Quetschen kann zum Richten von Kabeln mit vergleichsweise harter Isolation vorteilhaft sein. Solche Kabel lassen sich besser verarbeiten, wenn sie beim oder nach dem Richten zusätzlich im Durchmesser etwas gequetscht werden. Wenn hierzu die Schwenkachse 24, anstatt links wie bei den anhand der
Anhand der
Wie aus
Die Antastfinger 23 werden nach Festlegen der Schliessstellung nach oben geschoben, so dass sie das Kabel 4 ausreichend weit vom Kabel entfernt sind und sie das Kabel nicht mehr beaufschlagen können, auch wenn eine durch Verschwenken erstellte Aktivstellung vorliegt. Hierzu weist eine Trägerplatte, die die Antastfinger 23 trägt, Langlöcher 36 auf, so dass die Antastfinger 23 bzw. die Trägerplatte in Schliessrichtung begrenzt verschiebbar am ersten Rollensupport 6 gelagert sind bzw. ist.After the closed position has been established, the
Die
Der Richtapparat 1 weist ein linear in Transportrichtung x bewegbares Schubelement 25, über den sowohl der erste Rollensupport 6 mit den oberen Rollen 20.1 .. 20.7 als auch der zweite Rollensupport 7 mit den unteren Rollen 21.1 .. 21.6 bewegt werden kann. Vorliegend ist das Schubelement 25 manuell über einen Handhebel 26 betätigbar. Anstelle des Handhebels 26, mit dem das Schubelement 25 hin und her manuell bewegt werden kann, könnte das Schubelement 25 auch mit einem Antrieb zum Bewegen des Schubelements 25 verbunden sein.The straightening
Am Schubelement 25 ist eine Zustell-Kulissenführung 27 zum Verschieben des ersten Rollensupports 6 in Schliessrichtung s angeordnet. Weiterhin ist am Schubelement 25 eine Öffnungs-Kulissenführung 28 zum Lösen der Sperrwirkung und zum Zurückführen des ersten Rollensupports 6 angeordnet. Die Kulissensteuerung umfasst einen mit 30 bezeichneten Steuerkörper, der mit der Zustell-Kulissenführung 27 und der Öffnungs-Kulissenführung 28 zusammenwirkt. Der Steuerkörper 30 ist über eine Feder 42 am ersten Rollensupport 6 abgestützt.An
Am Schubelement 25 ist eine Verschwenk-Kulissenführung 29 zum Verschwenken des zweiten Rollensupports 7 angeordnet, wobei mit der Verschwenk-Kulissenführung 29 ein mit 31 bezeichneter federbelasteter Steuerkörper 31 zusammenwirkt. Die Feder zum Erzeugen der Federbelastung auf den Steuerkörper 31 ist mit 43 bezeichnet. Die Feder 43 stützt den Steuerkörper 31 gegen das Gestell 8 des Richtapparats 1 nach oben hin ab. Der Steuerkörper 31 ist über einen Hebel 44 mit dem zweiten Rollensupport 7 verbunden.A pivoting
Die Verschwenk-Kulissenführung 29 kann durch eine kontinuierliche ansteigende Steuerbahn oder -kurve gebildet sein. Vorteilhaft kann es sein, wenn die Verschwenk-Kulissenführung 29 durch eine stufenartig ausgestaltete Steuerbahn mit mehreren Aufnahmen 32 für den Steuerkörper 31 gebildet ist. Eine derartige Kulissenführung 29 mit einer stufenartig ausgestalteten Steuerbahn zum Einstellen von diskreten Anstellwinkel-Positionen ist im Ausführungsbeispiel gemäss
Der Richtapparat 1 verfügt über das Schubelement 25 mit einem Handhebel 26 und die Kulissenführungen 27, 28, 29. Das Schubelement 25 kann mit dem Handhebel 26 gegenüber dem Gestell 8 hin und her bewegt werden. Die Kulissenführung 27 steuert dabei über den als Rolle ausgebildeten Steuerkörper 30 den Zustellvorgang, bei dem die obere Rollengruppe 2 nach unten gegen die untere Rollengruppe 3 verschoben wird. Zum Festlegen der Schliessstellung weist auch dieser Richtapparat 1 eine Antastrolle 19 und eine dieser gegenüberliegende Gegenrolle 22 auf. Alternativ könnten auch ein oder mehrere Antastfinger eingesetzt werden. Die Kulissenführung 29 steuert über den als Rolle ausgebildeten Steuerkörper 30 den Verschwenkvorgang, bei dem der Anstellwinkel α der unteren Rollengruppe 3 eingestellt wird.The straightening
Die Wirkungsweise der Kulissensteuerung zum Zustellen und zum Verschwenken ist wie folgt: Ausgangspunkt ist die in
Wie vorgängig schon erwähnt, wird eine gute Richtwirkung erzielt, wenn die Rollen 20.1, 21.1, 20.2, 20.3, .. am Eingang so liegen, dass das Kabel 4 sich derart wellenförmig zwischen den Rollen hindurchbewegen muss, dass das Kabel 4 an jeder nächsten Rolle in abnehmender Intensität gekrümmt wird. Wenn das Schubelement 25 nun weiter nach links geschoben wird, kann sich die Feder 42 entspannen und die (hier nicht dargestellte) Feder (10), mit dem der erste Rollensupport 6 am Gestell 8 abgestützt ist, drückt die Rollengruppe 2 in die Rücklaufsperre. Wird das Schubelement 25 und damit die Verschwenk-Kulissenführung 29 noch weiter nach links geschoben, wie in
Wird das Schubelement 25 in die entgegengesetzte Richtung, also nach rechts wieder zum Ausgangspunkt bewegt, wird der Richtapparat 1 entsprechend wieder in seinen offenen Zustand bzw. Offenstellung gebracht. Dabei stellt die Verschwenk-Kulissenführung 29 über Steuerkörper 31 die untere Rollengruppe 3 zunächst wieder in die parallele Neutralstellung. Der Steuerkörper 30 fährt entlang der Öffnungs-Kulissenführung 28 und hebt die Rücklaufsperre auf, worauf die obere Rollengruppe 2 in die Offenstellung überführt werden kann.If the pushing
Es wäre auch möglich, anstatt des linear bewegbaren Schubelements 25 die Ansteuerung der beiden Steuerkörper auch beispielsweise mit rotativ antreibbaren Kurvenscheiben zu realisieren.It would also be possible, instead of the linearly movable pushing
An Stelle des Hebels 44 könnte auch eine Zugfeder eingesetzt werden, so dass der Anstellwinkel der unteren Rollengruppe 2 indirekt über die entsprechende Federkraft beeinflusst wird.A tension spring could also be used instead of the
Die einander gegenüberliegenden Antastrolle 19 und Gegenrolle 22 könnten weiter zur Schwenkachse 24 auch derart positioniert werden, dass sie sich beim Zustellen der oberen Rollengruppe 3 aufeinander zubewegen. Dadurch wird eine Quetschwirkung erzielt, die derjenigen einer sogenannten Pinchrolle entspricht.The
In alternativen Ausführungen des Richtapparats 1 wäre es vorstellbar, keine feste Schwenkachse 24 vorzusehen. Um dem Anwender eine Feineinstellung des Abstandes der beiden Rollengruppen 2,3 zu ermöglichen, kann beispielsweise die Schwenkachse 24 durch eine Einstellschraube oder einen Exzenter vertikal verschoben werden. Es könnte auch eine Vorrichtung am Richtapparat 1 angebracht sein, welche eine Verschiebung zwischen Gestell 10 und Rollengruppe 2 ermöglicht.In alternative versions of the
Claims (15)
- Straightening apparatus (1) for straightening cables (4), said apparatus comprising a first roller group (2) having a plurality of rollers (20.1 .. 20.7) and a second roller group (3) having a plurality of rollers (21.1 .. 21.6) which is opposite the first roller group (2), wherein the cable (4) can be guided through in a transport direction (x) alternately between the rollers (20.1 .. 20.7) of the first roller group (2) and the rollers (21.1 .. 21.6) of the second roller group (3), and comprising an infeed device (5) by means of which the first roller group (2) can be displaced in a closing direction (s) against the second roller group (3), the straightening apparatus (1) comprising securing means for securing the position of the first roller group (2) displaced in the closing direction by means of the infeed device (5), characterized in that the straightening apparatus (1), to form the securing means, comprises a backstop (9) which blocks a backward movement of the first roller group (2) against the closing direction (s).
- Straightening apparatus (1) according to claim 1, characterized in that the straightening apparatus (1) has a first roller support (6) for the first roller group (2), to which first roller support the rollers (20.1 ..20.7) of the first roller group (2) are fastened in a freely rotatable manner, and a second roller support (7) for the second roller group (3), to which second roller support the rollers (21.1 .. 21.6) of the second roller group (2) are fastened in a freely rotatable manner, and in that a frame (8) for carrying the first and the second roller support (6, 7), wherein the first roller support (6) is mounted in the frame (8) so as to be displaceable in the closing direction.
- Straightening apparatus (1) according to claim 1 or 2, characterized in that the first roller support (6) is supported on the frame (8) by a spring element (10), in particular a helical compression spring, which acts on the first roller support (6) with a spring force against the closing direction (s).
- Straightening apparatus (1) according to one of claims 1 to 3, characterized in that the backstop (9) comprises a clamping body, in particular a clamping roller (11), wherein the clamping body or the clamping roller is received in a wedge gap (12).
- Straightening apparatus (1) according to claim 4, characterized in that the backstop (9) comprises a spring (13) for generating a pretension for the clamping body, in particular for the clamping roller (11).
- Straightening apparatus (1) according to one of claims 1 to 5, characterized in that the straightening apparatus (1) has a manually operable infeed device (5) having an operating element (16), in particular in the form of a button, that can be moved linearly in the closing direction.
- Straightening apparatus (1) according to claim 6, characterized in that a driver (18) for advancing the first roller support (5) connects to the operating element (16).
- Straightening apparatus (1) according to claim 7, characterized in that an unlocking element (41) is provided for releasing the locking effect of the backstop (9).
- Straightening apparatus (1) according to claim 7, characterized in that an unlocking element (41) for releasing the locking effect is arranged on the driver (18), wherein the unlocking element (41) can be brought into abutment with the clamping body (11) during a return movement in the opposite direction to the closing direction.
- Straightening apparatus (1) according to one of claims 1 to 9, characterized in that the straightening apparatus (1) has a contact roller (19) for fixing the closed position, wherein the contact roller (19) is arranged downstream of the first roller group (2) with respect to the transport direction (x) on the output side, and wherein the cable (4) can be pressed between the contact roller (19) and a counter roller (22) assigned to the second roller group (3) and opposite the contact roller (19).
- Straightening apparatus (1) according to one of claims 1 to 10, characterized in that the straightening apparatus (1) has, to fix the closed position, at least one and preferably a plurality of contact fingers (23), wherein the at least one contact finger (23) is assigned to one of the roller groups and in particular to the first roller group (2) and wherein the contact finger (23) is opposite a relevant roller (21.1 .. 21.6) of the other roller group, in particular the second roller group (3), so that the cable (4) can be pressed between the relevant contact finger (23) and the opposite roller (21.1 .. 21.6).
- Straightening apparatus (1) according to one of claims 2 to 11, characterized in that for the further generation of the straightening effect of the cable after completion of the infeed process, the second roller support (6) is mounted on the frame (8) so as to be rotatable about a swivel axis (24), and in that the straightening apparatus (1) has a swiveling device (15) by means of which the second roller group (3) can be swiveled into an active position.
- Straightening apparatus (1) according to one of claims 2 to 12, characterized in that a link motion is provided for the movement of the first roller support (6) and/or the second roller support (7).
- Straightening apparatus (1) according to claim 13, characterized in that a linearly movable thrust element (25) is provided for the link motion, by means of which element both the first roller support (6) and the second roller support (7) can be moved.
- Straightening apparatus (1) according to claim 14, characterized in that the straightening apparatus (1) has a manually operable movable thrust element (25) comprising a hand lever (26).
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19204346.1A EP3812060B1 (en) | 2019-10-21 | 2019-10-21 | Device for straightening cables |
RS20221169A RS63831B1 (en) | 2019-10-21 | 2019-10-21 | Device for straightening cables |
JP2020169582A JP2021065934A (en) | 2019-10-21 | 2020-10-07 | Straightening apparatus for straightening cables |
CN202011099711.0A CN112769021A (en) | 2019-10-21 | 2020-10-14 | Alignment device for aligning cables |
US16/949,178 US11590556B2 (en) | 2019-10-21 | 2020-10-19 | Straightener for straightening cables |
MX2020011108A MX2020011108A (en) | 2019-10-21 | 2020-10-20 | Straightener for straightening cables. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP19204346.1A EP3812060B1 (en) | 2019-10-21 | 2019-10-21 | Device for straightening cables |
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EP3812060A1 EP3812060A1 (en) | 2021-04-28 |
EP3812060B1 true EP3812060B1 (en) | 2022-11-30 |
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EP19204346.1A Active EP3812060B1 (en) | 2019-10-21 | 2019-10-21 | Device for straightening cables |
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US (1) | US11590556B2 (en) |
EP (1) | EP3812060B1 (en) |
JP (1) | JP2021065934A (en) |
CN (1) | CN112769021A (en) |
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CN113618410A (en) * | 2021-08-18 | 2021-11-09 | 豪丰茂五金制品(太仓)有限公司 | Straightening and material cutting equipment for cutter bar machining and working method thereof |
CN114263059B (en) * | 2021-12-01 | 2023-03-21 | 湖南湘钢金属材料科技有限公司 | Elevator wire rope post-deformer |
CN117123701B (en) * | 2023-10-27 | 2024-04-12 | 赣州东峰自动化设备有限公司 | Iron wire production equipment of flare-outing |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0619155B1 (en) * | 1993-04-06 | 1997-06-04 | WITELS APPARATE-MASCHINEN ALBERT GmbH & Co. KG | Straightening apparatus for wire, multiple wire or tubular products |
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US4005592A (en) * | 1975-12-12 | 1977-02-01 | Haeussler Alfred H K | Strip and wire straightener roll |
US5676010A (en) * | 1996-09-20 | 1997-10-14 | The Whitaker Corporation | Wire straightening device |
DE19828675C2 (en) | 1998-06-26 | 2000-05-25 | Witels App Masch Albert Gmbh | Method and device for adjusting straightening rollers of a straightening apparatus for straightening wire which can be adjusted in translation by means of an adjusting mechanism |
CN102366803B (en) | 2010-06-23 | 2015-09-02 | 科马斯控股股份公司 | For aligning the straightener of cable and corresponding method |
EP3184191B1 (en) * | 2015-12-21 | 2020-02-05 | Komax Holding AG | Straightening device for straightening cables |
CN205702240U (en) * | 2016-04-14 | 2016-11-23 | 天津市天龙得冷成型部件有限公司 | The more straight device of wire rod of cold headers |
CN206392758U (en) * | 2016-11-30 | 2017-08-11 | 东莞中厚智能机械有限公司 | A kind of wire rod swage |
CN207709736U (en) * | 2017-04-29 | 2018-08-10 | 加渥机械自动化(上海)有限公司 | A kind of centering type rapid re-strike precision straightening device |
-
2019
- 2019-10-21 RS RS20221169A patent/RS63831B1/en unknown
- 2019-10-21 EP EP19204346.1A patent/EP3812060B1/en active Active
-
2020
- 2020-10-07 JP JP2020169582A patent/JP2021065934A/en active Pending
- 2020-10-14 CN CN202011099711.0A patent/CN112769021A/en active Pending
- 2020-10-19 US US16/949,178 patent/US11590556B2/en active Active
- 2020-10-20 MX MX2020011108A patent/MX2020011108A/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0619155B1 (en) * | 1993-04-06 | 1997-06-04 | WITELS APPARATE-MASCHINEN ALBERT GmbH & Co. KG | Straightening apparatus for wire, multiple wire or tubular products |
Also Published As
Publication number | Publication date |
---|---|
US20210114079A1 (en) | 2021-04-22 |
CN112769021A (en) | 2021-05-07 |
JP2021065934A (en) | 2021-04-30 |
MX2020011108A (en) | 2021-04-22 |
RS63831B1 (en) | 2023-01-31 |
US11590556B2 (en) | 2023-02-28 |
EP3812060A1 (en) | 2021-04-28 |
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