Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/16—Unwinding or uncoiling
  • B21C47/18—Unwinding or uncoiling from reels or drums
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
  • B21C47/16—Unwinding or uncoiling
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C49/00—Devices for temporarily accumulating material
• • 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

Definitions

• the invention relates to a device for wire feed to wire processing machines, in which the wire from a wire coil receiving, rotatable about an axis reel and fed to the wire processing machine upstream wire feed is supplied, wherein at least one of the reel in the wire draw direction downstream deflection device is provided over the led withdrawn from the reel wire is guided and delivered to the wire entry, wherein the wire insertion upstream of a wire storage device is provided.
• the intermittent feeders used in wire processing machines pull the wire off a wire coil deposited on a reel, working with great accelerations and braking. It is desired that the reel should run as quietly as possible, so that the wire is discharged continuously. For this purpose, there is usually a use of deflections and / or swivel arms, which should compensate for non-uniformities in the trigger, since the very large mass of the wire coil in turn can not be accelerated and braked very quickly.
• the aforementioned assistance measures are often not sufficient to ensure the desired smooth running of the reel or to achieve as little as possible no movement of the swivel arm.
• From DE 44 43 503 A1 discloses a device for wire feeding to wire processing machines is known, in which the wire coming from the reel between this and the wire feed of the downstream wire processing machine is guided in a loop, wherein the deflection of this loop is determined by a detection unit.
• the reel in addition to the rotational movement for unwinding still perform a pivoting movement about the Drahtzu Glassraum whose amount and direction is determined by the detection unit. This allows a compensation of the twist of the wire, which is particularly important in the processing of spring-drawn wire grades.
• a wire feeder in which a deflectable deflection roller is used, which is resiliently biased down and similar to a swing arm of a reel works.
• the deflection of the deflection roller is detected and regulated according to the speed of the reel.
• a spring-loaded, deflectable deflection roller is also provided between a straightening rotor and a reel.
• the wire is guided in a freely circulating loop, the formation of which is monitored by means of switches.
• the spring-loaded deflectable deflection roller is associated with a scanning device that shuts down the wire intake and the straightening rotor falls below a predetermined minimum length, while the loop associated switch in addition to the conveying speed of the wire entry and in the same direction with this influence the speed of the straightening rotor.
• the object of the invention is to provide a further improvement with regard to an even smoother running of the reel.
• the wire storage device defines a closed loop guide track on which the wire rests and is guided and whose diameter between a minimum, an inner radial position of the guideway corresponding, and a maximum an outer radial position of the guideway corresponding value is variable, wherein the guideway is spring-biased towards the receipt of the outer radial position.
• an additional wire storage device is provided between the reel and the wire processing machine, which serves as a wire buffer, from which the retraction movement can be operated, which contributes to a quieter run of the reel and any swivel arm possibly associated.
• the intermittent pull-off force acts first on this wire storage device, as a result of which in its radial position between an inner and an outer radial limit position changeable, but continuously resiliently biased towards the outer radial boundary layer towards guideway shocks from the feeder of the wire processing machine resiliently collected and can be largely compensated before they (if any) with a then, however, significant mitigation can affect the swivel arm of the reel to compensate there.
• one of the wire deflection devices used is most preferably provided in the form of a swivel arm which is spring-biased in a swung-out direction and which is preferably associated with the reel.
• the combination of such a pivot arm with the inventively used further wire storage complements such that a particularly smooth running of the reel can be achieved.
• the wire storage device may be mounted in the device according to the invention at any suitable, the wire entry upstream point. However, it has proved to be particularly advantageous if the wire storage device is in turn directly connected directly to the swivel arm or the wire feed.
• the wire storage device can be rotated about an axis of rotation which is perpendicular to the wire feed direction and is particularly preferably aligned perpendicular to the axis of the reel.
• the wire storage device when the wire storage device is directly attached to the reel, it is preferable to align the axis of rotation of the wire storage device approximately parallel to the axis of the reel.
• a particularly advantageous embodiment of the device according to the invention is achieved in that the wire storage device is designed as a spring wheel, whose guide path is determined by the radially outer ends of a plurality of attached thereto, radially aligned compression springs. This will ultimately be a straightforward structure achieved the wire storage device that is inexpensive to produce and of great effectiveness.
• the spring wheel is designed so that it comprises two spaced-apart side parts whose distance from each other is smaller than the diameter of the radially aligned springs, each spring is mounted in two radially in both side parts, in their position corresponding recesses, whose width (seen in the circumferential direction of the spring wheel) is smaller than the diameter of the spring, which is why this protrudes on both sides over the side parts.
• the wire storage device when the wire storage device is provided directly on a swivel arm associated with the reel, the wire is preferably deflected by approximately 180 ° on the guide track of the wire storage device.
• the determination of the guideway in the wire storage device with elements other than compression springs can be achieved preferably by the use of radially aligned pressure elements in the form of fluidbeaufschlagten spring elements, most preferably the circumferential wire facing sides of the compression springs or the spring elements of the spring wheel with caps wear-resistant material or are provided with freely rotatable rollers.
• the wire storage device may in turn be rotatably mounted, but may equally be provided as a fixed, non-rotatable device, since the use of wear-resistant caps or freely rotatable rollers on the wire facing sides of the compression springs or the spring elements of the spring wheel per se already a revolution of Wire along the guideway then formed by these caps or the rotatable rollers in a relative orbital motion to this easily possible.
• the guide track is formed in the wire storage device of a circulating layer consisting of an elastically compressible material, which is particularly preferably made of elastomeric material.
• the wire storage device comprises a plurality of around a central support axis mounted around this arcuate radially outwardly extending, freely projecting, consisting of resilient material slats disposed between two side walls (but not attached to these) and define the free end portions of the guideway and each terminate in a curved in the direction of rotation of the wire end portion.
• compression springs are designed in the form of running in cylinders piston, which determine the position of the guideway on the free ends of attached to them piston rods.
• Each piston or piston crown and the associated cylinder bottom are formed from a magnetizable, preferably a permanent magnetic, material of the same polarization.
• each lamella rests against its front side in the circumferential direction of the wire against an adjusting element, which is adjustable in its radial position and thus the length of the end portion of the respective lamella extending outwardly therefrom is adjustable.
• This can be adjusted by appropriate adjustment of the actuating elements in a simple manner and without much design effort, the lever arm of the freely on the actuator protruding end portion of each blade and thus also effective on the guideway rigidity of the blade.
• the slats can be made of any suitable and resilient elastic material. Most preferably, however, they are formed in the form of spring steel slats.
• Fig. 1 is a schematic side view of a first embodiment of an inventive
• Wire storage element in the form of a spring wheel
• Fig. 2 is a plan view of another embodiment of a device according to the invention, in which the wire storage device in the form of a spring wheel directly on a
• FIG. 3 is a perspective view of a detail of a spring wheel of a device according to the invention
• Fig. 4 is an only schematic and enlarged view of the arrangement of a spring element of a spring wheel in an inventive device
• FIG. 5 is a schematic diagram of the structure of a wire storage device according to the invention with radially projecting from a central holding axis curved blades;
• Fig. 6 is a likewise only a schematic representation of the structure of a wire storage device according to the invention with fluidbeaufschlagten spring elements with freely rotatable rollers at their projecting ends, and
• Fig. 7 is only a very basic sectional view through a spring element in the form of a cylinder with therein running piston, which as well as the cylinder bottom made of a permanent magnetic material (but the same polarization) consists.
• FIG. 1 is a schematic side view of a first preferred embodiment of a wire feeding apparatus 1 according to the invention, as can be used in a wire or a tube processing machine which operates with a material from the coil 2, which rests on a rotatably driven reel 3 and is subtracted from this over deflections 4 and a swing arm 5.
• a wire storage device in the form of a spring wheel 7 is arranged between the swivel arm 5 and the processing machine, of which only one feeder 6 is indicated in principle, which in turn has a wire horizontally and perpendicularly to the feed direction x of the wire 8 has lying axis of rotation 9.
• the spring wheel 7 is distributed over its circumference a plurality of radially arranged and radially acting spring elements 10, preferably in the form of coil springs. These spring elements 10 all have an identical shape.
• Figs. 3 and 4 the construction of the spring wheel 7 is shown in detail.
• This has two circular side parts 13, which serve as lateral boundary plates for the wire 8 and a distance a (seen parallel to the position of the rotation axis 9) are removed from each other.
• These side parts 13 are preferably made of soundproofing sheets (of vibration-damping composite material made of a viscoelastic plastic layer between two steel sheets, z. B. Bondalblech Thyssen Krupp steel), which is particularly favorable for large diameters.
• rectangular recesses 14 are provided, which serve as receptacles for the spring elements 10, whose spring ends 11 (see Fig. 3) in the installed state of stops 12, mounted in radial alignment and evenly across its circumference be limited, which is the radially outer and inner end edges of the recesses 14.
• both the width B of each recess 14 (seen in the circumferential direction of the spring wheel 7), as well as the distance a of the side parts 13 of the spring wheel 7 are each smaller than the diameter D of the spring elements 10 formed as helical springs
• the approximately radially extending side edges of the rectangular recesses 14, in the circumferential direction of the Spring wheel 7 seen, in each case a lateral stop for the spring elements 10, which also project laterally beyond the side parts 13 to the outside.
• FIG. 1 further shows, the wire 8, in the wire withdrawal direction x behind the pivot arm 5, once around 360 ° around the spring wheel 7 herum secured and rests on the radially outer ends of the spring elements 10, which in the direction of rotation of the spring wheel. 7 jointly define a guideway 17 (this guideway 17 is shown only in Figs. 5 and 6, but is in completely the same way in the embodiment of Figs. 1 to 4).
• the feeder 6 of the downstream wire processing machine If the feeder 6 of the downstream wire processing machine is actuated and the wire 8 is retracted therefrom, it presses the spring elements 10 in the radial direction around the spring wheel 7 along the initially predetermined position of the guide track 17, thereby pulling on the spring wheel 7 around the guideway 17 formed wire loop. Thus, the feeder 6 thus “operated” from the stock stored in the spring wheel 7 of the wire. 8
• a second embodiment of the device 1 in which here the wire storage device is arranged in the form of the spring wheel 7 directly as a deflection on the free end of the pivot arm 5.
• the axis of rotation 9 of the spring wheel 7 is vertical and perpendicular to the wire 8 and parallel to the axis of rotation 22 of the reel 3.
• the wire 8 does not rotate the spring wheel 7 along the entire extent of the guide track 17, but rotates only over about 180 ° ,
• the spring elements 10 of the spring wheel 7 and their force acting on the wire 8 spring restoring force and the restoring force of the pivot arm 5 must be designed in the embodiments shown in the figures so that only at a relatively large compression travel of the spring elements 10, the pivotal movement of the pivot arm. 5 is initiated.
• FIGS. 5 and 6 quite fundamentally, two other embodiments for a spring wheel 7 with other embodiments of the spring elements 10 are shown:
• the spring wheel 7 has a central holding axis 15, from which spring steel lamellae 16 project in an arcuate manner over the circumference and are evenly projecting radially outward. These blades 16 are mounted between the side parts 13 of the spring wheel 7, but not on this, but only on the support shaft 15, attached.
• FIG. 5 (as well as that of FIG. 6) respectively show the spring wheel 7, in which the upper side part 13 is removed to illustrate the position of the spring elements 10.
• each lamella 16 is supported on its concavely curved side (which is the side which points in the direction of rotation y of the wire 8) on an actuating element 18 in the form of a support pin.
• the adjusting elements 18 are (in Fig. 5, not shown) adjustable in its radial position, in such a way that they are all simultaneously adjusted radially and to the same extent.
• the lamellae 16 are curved at their freely projecting end portions 19 in the direction of rotation y of the wire 8, so that the end portion 19 of each lamella 16 at an acute angle ⁇ enters the set of the free ends of the lamella 16 guide track 17. This applies to all possible diameters of the guideway 17.
• the radial position of the guide track 17 thus varies, depending on the state of tension of the rotating wire, the diameter of the guide track 17 between a maximum outer radial position (diameter dt) and a minimum, inner radial position (diameter d 2 ) is variable, due to the resilient Preload of the slats 16 (or other spring elements 10), the guide rail 17 defining free ends the spring elements 10 are always biased in their maximum, the diameter d f of the guide track 17 corresponding outer radial position. This is to be shortened here expressed by the formulation that the radial position of the guide track 17 is biased in its radially outermost position.
• fluid-actuated spring elements 20 are used as resilient elements, which are provided at their freely projecting ends with freely rotatable rollers 21. These rollers 21 are mounted on small piston rods 23 which run in radially aligned fluid operated pressure cylinders 24. Again, it is provided by a corresponding design that in the starting position (at maximum extended piston rods 23, see Fig. 6) of the piston rods 23 acting fluid pressure in the pressure cylinders 24 is equal in all spring elements 20.
• the guide track 17 is fixed circumferentially by the radially outermost points of the rollers 21.
• the representation of FIG. 6 shows the radially outermost position of the guide track 17 corresponding to the diameter dt from FIG. 5.
• the spring wheel 7 in turn must not necessarily be rotatable, since the circulation of the wire 8 along the guide track 17 can then also readily take place when the spring elements do not twist. Also, a rotatability of only the spring elements 16 and 20 within the spring wheel 7 between (fixed) side parts 13 represents an effective embodiment of this pressure storage device.
• the spring wheel 7 can in principle be arranged non-rotatably and fixedly, because the spring elements 16 yield elastically in the running direction y of the wire along the guide track 17 and thus a reduction in the diameter of the guide track 17 even without twisting of the side parts 13 the spring wheel 7 at resilient bias in the direction of the maximum diameter d, out is possible.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Coiling Of Filamentary Materials In General (AREA)
• Wire Processing (AREA)
• Unwinding Of Filamentary Materials (AREA)
• Winding, Rewinding, Material Storage Devices (AREA)
• Springs (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44584122

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (18)

Citations (9)

Family Cites Families (24)

• 2010
  • 2010-10-05 DE DE102010047531A patent/DE102010047531B4/de not_active Expired - Fee Related
• 2011
  • 2011-09-05 US US13/878,175 patent/US9586249B2/en active Active
  • 2011-09-05 WO PCT/EP2011/004466 patent/WO2012045381A1/de not_active Ceased
  • 2011-09-05 EP EP11754618.4A patent/EP2624976B1/de active Active
  • 2011-09-05 CN CN201180047998.5A patent/CN103140302B/zh active Active
  • 2011-09-05 PL PL11754618T patent/PL2624976T3/pl unknown
  • 2011-09-05 JP JP2013532056A patent/JP5740000B2/ja active Active

Patent Citations (9)

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