DE102004022244A1 - Wound up flexible commodity e.g. cord, feeding device for use with processing device, has guide arm rotatable around vertical or horizontal axis for unwinding cord and guidance unit for feeding cord directly to zone of processing device - Google Patents

Abstract

The device has a feeding unit (1) for feeding cables to a processing device and a storage container including wound up flexible cord. The supply unit has a guide arm (8) rotatable around a vertical or horizontal axis for unwinding the flexible cord against its winding direction and parallel to a winding axis. The guide arm is connected to guidance units which feeds the cord directly to a machining zone of the processing device.

Description

contraption for feeding of wound flexible strand-like material, in particular of flexible Litz, to a processing device, consisting essentially from a storage container, in which the strand-like material is provided wound up and one feed for feeding the goods to the processing facility.

flexible strand-like material, such as cables, pipes, pipes or Strands are usually wound on drums for transport and storage and unwound or machined by hand or machine by means of pulling or guiding devices, which are arranged between drum and processing machine, unwound and aligned fed to the processing machine.

Especially for flexible strand-like Good smaller cross-section, such as wires or strands, is the storage in barrels different size known become. These barrels best hen from a cardboard material, are much cheaper to manufacture such as cable drums, can be environmentally friendly after use be recycled and must not reused become.

The Strands or wires are guided when winding around a winding core to a precise position as possible Winding and to allow a good winding quality.

adversely However, it is already during the transport of the filled barrels for Slipping and twisting of the windings can occur.

The Unwinding is usually done by placing the keg directly placed in the processing area of the machine and the good pulled the barrel. Also with interposition additional managerial or unwinding, the product is pulled directly from the barrel. It occurs mainly on the surfaces the winding core increased Friction on. At high unwinding speeds arise uneven loads of the good. Furthermore it comes very quickly to loop or knot the stranded or wire turns in the barrel. The consequences of this are downtimes the processing machines and high time spent untangling the turns.

The different tensile forces, which act on the goods when unwinding, can also lead to quality reductions to lead, for example, when strands in a wire processing machine certain lengths be tailored. The occurring length tolerances influence the cut negative.

Out DE 198 02 903 A1 For example, there is known a method and apparatus for withdrawing an elongate element from a supply, and a method for producing a supply, wherein the supply is also arranged in turns in a drum-like container.

task This invention was to provide a method of handling the element and to provide a suitable device which provides looping when pulling out the element exclude at high speed and thus an increase the extraction speed under "avoidance of downtime of the Allow device.

In particular, in relatively stiff, flexible cables, cables or solid steel wires it comes when unwinding for helical or spiral twisting of the longitudinal fibers of the cable harness due to torques occurring. This torsion is intended by the invention DE 198 02 903 A1 prevented or reversed and the cable are fed in its extended position of further processing.

This This happens because the element or cable is so unwound during unwinding its longitudinal axis is rotated, that it is torsion-free, whereby the rotation in one guide takes place and held the element in subsequent guides torsion becomes.

at softer or much more flexible strand-like material, as in Strands or thin wires this problem is less. However, it occurs the described Disadvantage of confusion of Litzenwindungen in the barrel, with the solution described but also can not be prevented.

It is therefore an object of the invention, a device of the above to create the type mentioned, with the loop and knot formation by the nature of the Unwinding a wound product from a flexible, strand-like material, especially stranded or thinner Wire, is prevented.

The inventive task is solved by that the feed unit having a rotatable about a vertical axis guide arm, the Good against the winding direction and substantially parallel unwinds to the winding axis that the guide arm with at least one Guide unit is connected, which feeds the Gutstrang a deflection and that further leadership and transport elements are arranged, which direct the Gutstrang transport to the processing area of the processing device.

With this device according to the invention is that achieves that of the gut strand from the powered guide unit so led is that by their feed movement, the rotational movement of the guide arm triggered and this is carried along the turns of the strand-like material. The goods are guided in each unwinding position and handled with exact position. The loop or knot formation is prevented and conditional Downtime of the processing device prevented.

To a preferred and advantageous embodiment of the device according to the invention is the guide arm the feed unit above the reservoir arranged and the strand-like material is, following the unwinding, essentially unwinds vertically upwards. The deflection device steers the Gutstrang in about horizontal conveying direction. The control the feed unit done by means of the sag control.

These embodiment is structurally simple and inexpensive. The to be processed Gutstrang can without further intermediate buffer directly the processing device supplied become. Characterized in that the control of the feed unit by means of sag control takes place, the unwinding speed becomes the processing speed adapted to the processing device.

To another structurally simple embodiment of the device according to the invention includes the feeder unit stand like the reservoir, the guide arm is arranged at a predetermined distance above the reservoir and the length of the guide arm is adapted to the inner circumference of the reservoir.

The Length of the guide arm should be dimensioned so that the good when unwinding does not come into contact with walls of the reservoir. This can reduce friction and unwind speed elevated become.

Of the Unwinding and the structural design of the device be simplified if the reservoir has a barrel-like shape, in which the string-like Good, led to a winding core arranged is.

Also after this execution should be the guide arm so executed be that while the unwinding no friction due to the application of the strand-like Good results on the winding core circumference.

Of the Use of the device according to the invention is possible, too, if the reservoir is formed drum-like.

constructive easy and inexpensive Furthermore, if the leadership and transport element as a guide role is trained.

Also according to the invention provided that for execution the feed movements a motor drive is arranged and that the feed rate by means of a, with the feed unit Connected, sag control is regulated.

So can the Gutstrang almost zugfrei and without further unwinding or Buffering devices are supplied to the processing device. For short-term speed changes of the processing device can possible differences in length between the processing device and the feed unit via the natural Slack of the goods are compensated.

at general speed changes takes place the speed adjustment via the slack control, by the movement of the guide arm the acceleration of the transport and guide element and thus the adaptation the feed rate to the speed of the processing device causes.

The Control the processing device, the speed regulates both bodies, causes with increasing speed a vertically or horizontally movable guide arm of the suspension control swings out vertically or horizontally.

to Error detection during the transport of the Gutstranges is further a sensor element arranged at the sag control, which is the processing means and the device stops, for example, if no good in the specified speed can be tracked or errors occurred in the processing.

The Invention will be explained in more detail with reference to an embodiment. The associated Drawing illustrates the structural design of a device according to the invention for Unwinding stranded in a barrel-like reservoir and for feeding to a cutting and finishing machine in a schematic representation.

The drawing shows a stand-like feed unit 1 , on the bottom plate 2 the barrel-like reservoir 3 is arranged. For variable positioning in the immediate vicinity of the processing device 4 is the feeder unit 1 with lockable rollers 5 Mistake.

The reservoir is made of cardboard fabricated and has in its interior a centrally arranged winding core 6 on which the strand turns 7 are wound up. In the middle above the storage tank 3 is the guide arm 8th the feed unit 1 arranged and horizontally rotatable on a holding element 9 attached. The guide arm 8th has an angled shape with the vertical part 10 on the holding element 9 rotatably mounted and the angled part 11 is directed obliquely downward and has a smaller length than the inner radius of the reservoir.

It is advantageous if the guide arm 8th is formed and made of such a material that it has a relatively low mass, so that at high processing speeds and a necessary interruption of the processing process, a long rewinding of the guide arm due to its inertia can be avoided.

In the end of the angled part 11 and in the bending area of the guide arm 8th is the lead unit 12 arranged in the form of simple guide rollers, which are in operative connection with a motor drive and the transport of the unwound strand strand 13 to the deflection device 14 , which is also designed as a simple leadership, take over.

The guide arm 8th is through the powered guide unit 12 and deflection device 13 and thereby on the Litzenstrang 13 applied traction forces in rotational movement, which takes place against the winding direction. This will make the strand of strand 13 parallel to the winding axis in the storage container 3 unwound and vertically upwards over the guide unit 12 to the deflection 14 transported. The deflection device 14 is on the retaining element 9 attached and leads the strand of strand 13 through a tube-like guide element 15 to another guide and transport element 1.6 , which consists of two superimposed rollers, between which the strand strand 13 passed and over the guide arm 17 the slack control 18 almost draft-free to the processing facility 4 is transported.

The tubular guide element 15 serves the directionally accurate guidance of the strand strand 13 to and through the guide and transport element 16 ,

The regulation of the feed or transport speed of the strand strand 13 happens depending on the processing speed of the cutting and packaging machine 4 and is coordinated by their control.

The guide arm 17 the slack control 18 is formed vertically pivotable and is controlled by increasing the processing speed moves upward, with the result that the speed of the guiding and transport element 16 increases.

To damage the feeder unit 1 , the processing facility 4 or stranded strand 13 To avoid error detection and damage minimization, a sensor (not shown in the drawing) on the sag control 18 arranged, which immediately advances the strand of strand 13 stops and interrupts the workflow of the processing device via an interface.

The feeder 1 can also be adapted to the particular application directly on the storage container 3 arranged or with the processing device 4 be connected.

In dependence From the respective concrete constructive design, it is also possible to use storage tanks as cable drums to use.

1

feed

2

baseplate

3

reservoir

4

Processing device, Crosscut and confectionery

machine

5

role

6

winding core

7

string-like Good, strand winding

8th

guide

9

retaining element

10

vertical part

11

angled part

12

Guide unit

13

string of material, conductor strand

14

deflecting

15

tubular guide element

16

managerial and transport element

17

guide

18

Sag control

Claims (8)

Apparatus for supplying wound flexible strand-like material, in particular flexible strand, to a processing device, essentially consisting of a storage container in which the strand-like material is wound up and a supply unit for feeding the material to the processing device, characterized in that the supply unit ( 1 ) a guide arm rotatable about a vertical or horizontal axis ( 8th ), which is the strand-like good ( 7 ) counter to its winding and in wesentli parallel to the winding axis, that the guide arm ( 8th ) with at least one guide unit ( 12 ) connected to the Gutstrang ( 13 ) a deflection device ( 14 ) and that further guiding elements ( 15 . 16 . 17 ) are arranged, which the Gutstrang ( 13 ) directly to the processing area of the processing device ( 4 ) respectively. Device according to claim 1, characterized in that the guide arm ( 8th ) of the feed unit ( 1 ) above the reservoir ( 3 ), so that the strand-like material ( 7 ), the unwinding following, is processed substantially vertically upwards that the deflection ( 14 ) the Gutstrang ( 13 ) deflects in approximately horizontal conveying direction and that the control of the feed unit ( 1 ) by means of the slack control ( 18 ) he follows. Apparatus according to claim 1 and 2, characterized in that the feed unit ( 1 ) stand-like the reservoir ( 3 ), that the guide arm ( 8th ) with a predetermined distance above the reservoir ( 3 ) and that the length of the guide arm ( 8th ) to the inner periphery of the reservoir ( 3 ) is adjusted. Apparatus according to claim 1 to 3, characterized in that the storage container ( 3 ) has a barrel-like shape in which the strand-like material ( 7 ) to a winding core ( 6 ), is arranged. Apparatus according to claim 1 to 3, characterized in that the storage container ( 3 ) is drum-shaped. Device according to claim 1 and at least one of claims 2 to 5, characterized in that the guiding and transporting element ( 16 ) is designed as a driven guide roller. Device according to claim 1 and at least one of claims 2 to 6, characterized in that a motor drive is arranged for the execution of the feed movement and that the feed speed by means of a, with the feed unit ( 1 ), slack control ( 18 ) is regulated. Apparatus according to claim 1 and at least one of claims 2 to 7, characterized in that for fault detection during the transport of the Gutstranges ( 13 ) a sensor element on the slack control ( 18 ) is arranged.