DD286151A5 - DEVICE FOR TRANSFORMING A STRANDED WIRE BUNDLE WITH A WIRE - Google Patents

Abstract

The invention relates to a device for wrapping a strand-shaped Drahtbuendels with a wire, which consists of several parallel guided wire existing Drahtbuendel continuously moves in the axial direction and on a coaxial with the Drahtbuendel arranged coil stored wire with the help of a coaxial Drahtfuehrers wendelfoermig and taut on the Drahtbuendel is to raise. A cost-effective production and quality increase for Mandrindrahtbuendel u. a. achieved by two fixed, at a distance successively arranged hollow axes, on whose one hollow axis, the coil and on the other hollow axis of the Drahtfuehrer are arranged. {Device; Wrapping, strand-like; Drahtbuendel; Wire; Coil, coaxial; Wire guide, wendelfoermig}

Description

For this 1 page drawing

Field of application of the invention

The invention relates to a device for wrapping a strand-shaped wire bundle with a wire, wherein the wire bundle consisting of several parallel wires continuously moves in the axial direction and the wire stored on a coil arranged coaxially to the wire bundle with the aid of a likewise coaxial wire guide helically and taut on the wire bundle is to raise. The wires united into a strand are intended, for example, as a guide rod for soft catheters, as insertion wire for cannulas or probes u.a.m. be used.

Characteristic of the known state of the art

To bundle so-called Mandrins the Mandrindrähte are united to an endless strand, which is then wrapped with, for example, soft nickel silver wire and divided into the corresponding Mandrinlänge.

An also known for winding wire on an elongated body known device in which the wire from a body rotated and longitudinally displaceable against the body supply storage, in particular by the relative movement zwisthsn storage and body withdrawn and is thereby wound helically on the body is apart from its complex construction not suitable for a Mandrindrahtbündelung (DE-PS 2510 018).

There is also known a method of operating a device for applying a helix to a rod-shaped material, in which a roller is fixed * on a central spinner. This running on ball bearings central spinner rotates about a fixed tube, which is arranged coaxially to the rope-shaped material (DE-OS 3042531 in connection with DE-GM 7829496).

This used for one tape support and also an older, designed for filamentary spun material central spinner (DE-AS 24191500) do not solve the problems of wire wrapping with wire.

This is also true for a zer.falen helical spinner for applying ribbon or thread-like spinning material, in which the wound on a coaxial to the elongated Gut coil spinning material is knocked off with the help of a flyer (DE-OS 3525022). The spool and the flyer are provided with their own drives, wherein the flyer is driven at a constant line speed and provided with a device comprising a control element for the determination of the coil speed.

Another device for winding an elongate material allows the filamentary spun easily run through a hole located at the outer edge of a driven disc (EP 0068028). A disadvantage of this winding is the possible buckling of moving in its longitudinal direction under the tensile force of the thread.

The object of the invention is a device for wrapping a strand-shaped Mandrindrahtbündels with a wire. The object of the invention is furthermore to achieve an effort minimization and quality increase for the production of the Mandrindrahtbündel.

Explanation of the essence of the invention The invention has for its object to provide a device that several of her together and then in parallel

Guided mandrels are wrapped in a wire at a constant speed. There are the

Disadvantages of known winding devices by an improved wire guide for both the Mandrindrähte and for To avoid winding wire. According to the invention the object is achieved by two fixed, spaced behind each other and coaxial with

Hohlachsan arranged on elongated wire bundle, on whose one hollow shaft a non-driven spool and on the other hollow shaft of a driven pulley and a trigger lever existing wire guide are rotatably mounted, so that the wire from the spool on the trigger to the inlet side of the equipped with the wire guide

Hollow axis ζυ is guided to be wound around the Dräbür.del. So that the device does not run after the coil is stopped, the loose arrangement of the coil is expediently carried out

achieved by means of a slip whose size causes an eccentric coil position to the hollow shaft. The union of the mandrel wires drawn from a reel tower into a strand is accomplished only via a wire meld located on the inlet side of the spooled hollow shaft.

The helically wrapped with wire wire bundle is preferably old endless strand on a motor-driven roller

wound up, whose circulation to achieve a constant speed of passage of the wire bundle or the same

Wire distances of the applied coil is regulated by means of known control devices. Before with the inventive device, for example, consisting of 12 parallel mandrels existing Wire bundle continuously moved in the axial direction and stored on the coaxial with the wire bundle coil Wire with the help of coaxial also wire guide can be applied helically and tightly on the wire bundle, are

the Mandrindräh'.e stockpiled by an equal number of self-supporting, arranged in pairs in the roller tower roles nachmannuellem passage through the wire merger, through the first hollow shaft and now together with the vr ι the Spulebzw. the wire guide for the wrapping of the wire bundle ready to attach stranded wire through the second hollow shaft to the motor-driven role. Will this role z. B. set by a motor via a gear transmission in circulation and as previously stated, the stylet wires to the inlet side of the second hollow shaft free and then wrapped with a

Traversed by, for example, 0.68 m / min, then the train with the movement of the wire bundle

Beginning drive of the wire guide to make a dependent of the desired winding distance number of revolutions that z. B.

with 6mm winding distance and with identical circulations of motor and wire guide 113 rpm.

It should be emphasized that when the pulling movement of the wire bundle is interrupted there is no running over of the free-running spool,

which is finally achieved by their eccentric coil position. An impairment for free running makes even then not noticeable, for example, if the coil with a slip of 16mm diameter on a hollow axle with 12 mm

Diameter eccentric rests. The Mandrindrähte, which are preferably used for the passage control of cannulas, usually consist of Nickel silver wire, characterized by a hard to spring-hard material quality and are in diameter from 0.15 to

0.25mm. The wire used for its wrapping is suitably kept soft and consists of 0.2mm thick

German silver. The entire device is characterized not only by its simplicity and high reliability, but creates a

high winding quality for wire bundles with a relatively small strand cross-section.

Ausführungsbelspiel

The invention will be explained in more detail below using an exemplary embodiment. The accompanying drawing shows the overall view of the device according to the invention with a schematic representation of DrahUu- and -abführung. The device for winding a strand-shaped wire bundle 1 with a wire 2 consists essentially of two fixed, at a small distance one behind the other arranged hollow shafts 3; 4, one on the first hollow shaft 3 non-driven, by means of an existing slip eccentrically threateningly mounted coil 5 and a rotatable on the second hollow shaft 4 wire guide, which is marked with the ßezugszahl 6 disc with a trigger 7 is provided. This attached to the disc β trigger lever 7 protrudes slightly over the inner coil edge of the inner Spulenbegrenzung hinwog so that the withdrawn from the coil 5 wire 2 can be performed on this coil boundary to the inlet side of the hollow shaft 4. The wire guide is driven by a motor 8 which is rotatable to obtain uniform but also changed winding pitches. The first hollow shaft 3 is einlaßseitiu. provided with a wire merger 9, over which the self-supporting, preferably in pairs in a roller tower 10 arranged rollers 11 withdrawn wires 13 are to be combined into one strand. An insert of the device for Mandrindrahtbündelung requires, for example, in twelve supplied Mandrindrähten a slip in the two hollow shafts 3,4 is about 6mm.

The slip required for the eccentric position of the coil 5 results from the diameter difference between the roller bore and the hollow shaft 3, which is expediently limited to four millimeters. This slip does not affect the free movement of the coil 5, but prevents their Nachlaufon with decreasing wire tension.

In the forward direction of the two hollow shafts 3,4 a roller 14 is mounted behind these, which is rotated via a gear transmission by a geared motor 12. On this roller 14, the helically wound with wire 2 wire bundle 1 is wound as an endless strand. Their size and their controllable drive are chosen so that, for example, when winding a Mandrindrahtbündels the slope of a turn is six millimeters. Since at the beginning of the second layer of the aufzuspulenden wire bundle 1 whose passage is accelerated by the two hollow axes 3,4, is for the return of this acceleration to the output or for the corresponding increase in the revolutions of the wire guide a known speed regulation (not shown) provided which then either slows down the geared motor 12 or makes the motor 8 run faster.

As already stated, mandrels usually consist of hard to spring-hard nickel silver wire whose diameter can be 0.15 to 0.26 millimeters. For the wrapping of the strand-shaped Mandrindrahtbündel preferably a soft nickel silver wire with a wire thickness of 0.2 millimeters is used. The roller 14 can accommodate a mandrine wire bundle of about 250 to 300 meters in length wrapped with this wire 2. The cutting to a corresponding Mandrinlänge later in a known manner.

The manufacture of the wire bundle 1 takes place in a tight and parallel wire guide and without mutual stranding of the wires 13 used.

Claims (4)

1. An apparatus for wrapping a strand-shaped wire bundle with a wire, wherein the wire bundle consisting of several parallel wires continuously moves in the axial direction and which is mounted on a coil coaxial with the wire bundle stockpiled wire with the help of a coaxial wire guide helical and tight on the wire bundle , characterized by two fixed, spaced behind and coaxial to the elongated wire bundle (D arranged hollow axes (3,4) on the first hollow shaft (3) the non-driven coil (5) and on the second hollow shaft (4) of a driven disc ( 6) and a trigger (7) existing wire guides are rotatably mounted, so that the wire from the coil (5) via the trigger lever (7) in front of the inlet side of the second hollow shaft (4) is guided to be wrapped wire bundle (1). 2. Apparatus according to claim 1, characterized in that the loose arrangement of the coil (5) is achieved by means of a slip whose size causes an eccentric coil position to the hollow shaft (3). 3. Apparatus according to claim 1, characterized in that the first hollow shaft (3) on the inlet side with a wire merger (9) is provided, over which the from a roller tower (10) withdrawn wires (13) are to be combined into one strand. 4. The device according to claim 1, characterized in that the helically wound with wire (2) wire bundle (1) as an endless strand on a motor-driven roller (14) is aufzuspulen whose circulation to achieve a constant flow rate of the wire bundle (1) or The same wire spacing of the coil to be applied by means of known control devices (not marked) to regulate.