EP0689484A1

EP0689484A1 - Process and arrangement for separating wire windings

Info

Publication number: EP0689484A1
Application number: EP94911070A
Authority: EP
Inventors: Gerhard Pechau; Ewald Wyzgol; Hans-Jörg SCHUHMACHER
Original assignee: Schwermaschinenbau Kombinat Ernst Thalmann VEB; SKET Schwermaschinenbau Magdeburg GmbH
Current assignee: SKET Walzwerkstechnik GmbH
Priority date: 1993-03-19
Filing date: 1994-03-18
Publication date: 1996-01-03
Anticipated expiration: 2014-03-18
Also published as: ATE166263T1; WO1994021401A1; EP0689484B1; DE59406033D1; AU6373594A; JP2757895B2; DE4491537D2; JPH08506274A

Abstract

A process and arrangement are disclosed for separating wire windings shaped out of a series of windings made of hot-rolled wire and deposited in a series of successive windings on a winding conveyor. The last and first end windings are separated therefrom and supplied to a severing arrangement controlled by sensors and by a computer. The object of the invention is to limit the severing process to a determined area and to shorten the displacement paths of the severing arrangement, as well as the time taken by the severing process. For that purpose, the last and first end windings of a series of successive windings (7, 9) are separated by a cutting device. Said windings are separated from the intermediate windings at two spots and a thus separated sample (40) is supplied to a catching arrangement (6). The cutting device separates the last and first end windings (7, 9) by retaining the intermediate windings (8) and then sends them on the winding conveyor (2) to a stationary ejector (10) which deposits them on a scrap conveyor (41).

Description

Method and device for separating wire windings

The invention relates to a method and a device for separating wire windings, which are formed by a winding layer from hot-rolled wire and placed on a winding conveyor in successive winding positions, the rear and front end windings of the same being separated, and a device for cutting them off using sensors and a computer can be controlled.

From EP 0 255 724 a method and device for dividing wire windings is already known, which have been formed by a winding layer from hot-rolled wire and placed on the conveying means, on which the wire turns are conveyed to a collecting device, a movable one above the conveying means Arrangement is arranged with a pickup for one or more wire turns and a cutting device, which detects a wire turn with a sensor and separates a predetermined turn and makes a separation, movable units after detection of the predetermined wire turn via a sensor at the speed of the detected wire turn Recording the wire turns is synchronized and a height-variable tool head between the wire turns is lowered to below the conveying plane, the detected wire winding in a recording with an associated cutting device of the tool head in the area I the conveyor level is guided and after the cut the separated part is picked up as waste via a holder on the tool head and dropped in the area outside the conveyor path before its starting position above the conveyor can be re-adjusted.

In this solution, the device can perform many functions. Longer travels are necessary, which require a corresponding amount of time. This makes the device complicated and prone to failure. When the intended use of a high lifting and rotating column with a large cantilever arm, large vibrations occur on the cutting tool used, which impair the cutting process. The invention is based on the object of a method and a device for severing wire windings, which are formed by a winding layer from warm-rolled wire and placed on a winding conveyor in successive winding layers, the rear and front end windings of the same being separated and a device for severing Sensors and a computer are controlled, fed, to create, wherein the separation process takes place in a predetermined range and the travel of the device for separation is reduced and the time required for the separation process is reduced.

According to the invention the object is achieved in that a part of the device for separating wire windings device for cutting is lowered over the rear end windings to be separated of a winding layer, and by this the rear end winding to be separated is brought into a cutting position and at two points from the middle Turns are separated, a test piece lying between the two separation points being fed to a catching device and held by the device for cutting the separated rear end turns and fixed at one point in the area of the separation point and thereby spatially separated from the medium wire windings moving on the winding conveyor in the transport direction and then released again by an upward movement of the device for cutting and moved further in the transport direction on the winding conveyor, and also the device for cutting over the one to be separated n the front end turns of the following winding layer is lowered and by this the front end winding to be separated is brought into a cutting position and separated from the middle winding layer at two points, a test piece lying between the two separation points being fed to a catching device and the device for cutting the detached front end turns held and with a faster than the transport speed of the winding porteurs moved in its transport direction and thereby spatially separated from the middle turns moving forward on the winding conveyor at its transport speed and then released again by an upward movement of the device for cutting and moved further in the transport direction on the winding conveyor and after covering a predetermined distance the intermediate the successive turns and spatially separated rear and front end turns are picked up by a stationary ejector and placed on a scrap disposal.

Here, the separation of the rear and front end windings from the successive winding layers can be carried out in a chronological sequence by a device for cutting.

Another possibility is that the separation of the rear and front end windings from the successive winding layers is carried out approximately simultaneously by a different cutting device.

The rear and front end windings are preferably fed to a scrap shear via the scrap removal and divided there into further sections.

It is achieved by the method according to the invention that the device for cutting off wire windings only has to travel relatively short distances. A solution was developed with which it is possible to spatially separate the front and rear end turns as so-called scrap turns from the middle turns, the so-called good turns, of two successive turns layers and to further jointly separate them on the turn conveyor after the separation transport until they are stored on a scrap ejector via a stationary ejector. The middle wire turns are then fed to the coil collector in a manner known per se. In a further embodiment of the invention, the solution according to the invention comprises a device for carrying out the method, said device having a portal frame which can be moved on rails parallel to the winding transporter and which is provided with a tool plate which can be moved transversely over the winding transporter and in the direction thereof, downwards and upwards, on dex, the device for cutting the rear and front end turns is arranged, this having at least one measuring lever which is provided with the end turns to be separated into the cutting position, bringing in tips and knives. the device for cutting preferably has two knife levers arranged at a lateral distance from one another.

It is expedient that the lateral distance between the knife levers corresponds to the length of the test piece to be removed from the end turn.

It is possible for the insertion tip and the knives to be arranged in succession on one component on the knife lever.

In order to make it easier to fix the end turn to be separated, it is advantageous if, on the knife lever, the insertion tip is assigned to the side next to the knives so that they protrude forward, the knives having a relatively blunt lower end.

In a further development, the solution according to the invention comprises a further device for performing the method. In this case, this has at least one device for separating the rear and front end turns, which is provided on both sides of the Winduhg transporter with a stationary stand, in which a shaft extending perpendicular to the longitudinal axis of the winding transporter above the same is rotatably mounted on the at least one about its longitudinal axis rotatable cutting arm is arranged, which carries at its front end the device for cutting the rear and front end turn, the upper knife being associated with a lower knife arranged below the upper edge of the winding conveyor.

In this solution, instead of translating the entire device, a rotary movement of a part of the device, namely the cutting arm, is replaced with the device for cutting. This makes it possible to implement the method according to the invention with different devices which are particularly favorable for each specific area of application.

In order to achieve an energy-saving cutting of the wire windings, it is advantageous if two cutting arms are arranged on the shaft at a lateral distance from one another and offset in the direction of rotation by a range of 6 ° to 19 °.

The lateral distance of the upper knives on the two cutting arms expediently corresponds to the length of the test piece to be removed from the end turn.

To further reduce the expenditure of force during cutting, there is an advantageous possibility that each upper knife is in cutting connection with lower knives arranged on each of its two sides, the lower knives assigned to the first upper knife and the lower knives assigned to the second upper knife each having a vertical range of c; g = 0.2 d to 0.8 d are arranged offset from one another.

A drive unit consisting of a drive motor with a gear is preferably assigned to the shaft on which the cutting arm is arranged. In order to achieve a simplified control of the severing process and to enable a largely trouble-free operation, the device can expediently each have a device for severing the rear end windings of the front winding layer in the direction of transport with cutting arms rotating clockwise as well as a device for severing the front end windings of the in the transport direction has rear winding layer with counterclockwise rotating cutting arms, which are arranged at a predetermined distance from each other along the winding conveyor. A sensor can be assigned to each device.

Furthermore, it is advantageous if the ejector is arranged between the device for severing the wire windings and the collecting shaft for the middle wire windings, the ejector having an ejector arm which can be pivoted about a vertical axis and its longitudinal axis and has a receiving finger arranged at its front end, and thereby the separated rear and front end windings can be picked up jointly by the winding transporter by the pick-up finger and can be deposited outside of the same for scrap removal.

The invention is explained in more detail using an exemplary embodiment. In the accompanying drawing:

Fig. 1a to 1e is a schematic representation of the transport of the wire turns and the separation of those on a winding conveyor in the

Top view

Fig. 2 is a side view of the winding conveyor with a device for separating wire turns

3 shows the front view according to FIG. 1 4a to 4d the side view of the winding conveyor with an ejector in four working positions

Fig. 5 shows the top view according to FIG. 4a

Fig. 6 shows the front view of a device for cutting in the transport direction

Fig. 7 the section A-A according to FIG. 6

Fig. 8 shows the side view of a device for cutting

Fig. 9 the front view according to FIG. 8

Fig. 10 shows the side view of a further embodiment of the device for cutting

Fig. 11 the front view according to FIG. 10

Fig. 12 shows the side view of the winding conveyor with a further device for separating wire windings and an ejector

13 shows the top view according to FIG. 12

14 shows the side view of the device for severing and separating the front end turns according to FIG. 12

15 shows the side view of the device for severing and separating the rear end turns according to FIG. 12

16 shows the front view of a device for cutting in the transport direction corresponding to FIG. 12

Fig. 17 is a front view of the arrangement of the top and

Lower knife according to Fig. 16

In a wire rolling mill, wire windings 1 are formed from warm-rolled wire by a winding layer and placed on a winding conveyor 2 in successive winding positions, thereby separating the front end windings 9 and the rear end windings 7 from the middle windings 8. This is done in a manner known per se by accelerating a roller table. All wire windings 1 are transported by means of the winding conveyor 2 in the direction of a collecting shaft, not shown. The rear end turns 7 and the front end turns 9 separated from the middle turns 8 by a device. The separation process is carried out by sensors 3; 3 '; 3 ", which with a control device or

omem kechner are connected, controlled.

The device for separating has a device for

Cutting on, which acts lowered over the rear end windings 7 of the front winding layer to be separated and brings them automatically into a cutting position. The end turn 7 to be separated is separated at two points, and the test piece 40 which has been removed is fed to a catching device 6.

The device for cutting initially holds the separated rear end windings 7 in order to release them by starting up after spatial separation from the middle windings 8, the so-called good windings, which are transported on with the winding conveyor 2. It continues to descend over the front end turns 9 of the following turn length to be separated and brings the parts to be separated into a positive position. They are then separated at two points and the sample 40 which has been removed is likewise fed to the catching device 6. The device for cutting holds the separated front end windings 9, takes them along with an accelerated movement in the conveying direction in relation to the transport speed on the winding conveyor 2 and thereby sees them out from under the middle windings 8. The device for separating then gives the separated front end turns 9 by starting up frai. The separated rear and front end windings 7; 9 picked up as scrap windings by a stationary ejector 10 and fed to a scrap removal 41. Here, they are preferably divided into a plurality of sections by scrap shears, not shown, before they are collected in a scrap bucket. It is of course also possible to collect them undivided in a scrap container, but then the parts are relatively bulky. 1 to 11 an embodiment of the device for separating front and rear end windings 7; 9 described by the middle turns 8, the good turns. The separation of the same is necessary because the wire section created at the beginning and / or at the end does not meet the quality requirements and / or thickness tolerances. This is why they are also called scrap windings.

If one considers two successive winding layers as a time-critical case, the rear end winding 7 of the winding layer running in front according to FIG. La passes point A, at which it is detected by a sensor 3 in the form of a rolling stock indicator, which gives the starting impulse to the device for separation , which is in a starting position I. Up to a position II, the device is synchronized with the winding length in such a way that insertion tips 25 according to FIG. 2 are located exactly above the rear end turn 7 to be cut off and the lowering pulse is triggered for the device for severing. The on the pairs of knives 4; 5 insertion tips 25 penetrate into the winding length and guide the rear end winding 7 to be separated to the knives 28 of the device for cutting. The rear end turn 7 is divided into two places; the cut-out sample falls down into a catching device 6 and is fed to the test center. According to Fig. Lb, the device for severing remains in position III and thus pulls a gap between the rear end windings 7 and the middle windings 8.

The device for cutting is then raised and then receives the pulse for accelerating, synchronizing and lowering via the sensor or a second sensor 3 'and a time switch when the front end turn 9 of the new turn length sought is exactly in the predicted position (FIG. 1c). Here falls in a position IV after cutting both pairs of knives 4; 5 the test piece 40 in the catching device 6. By accelerating the device for severing beyond the speed of the winding conveyor 2, there is also a gap between the front end windings 9 and the middle windings 8, as shown in FIG. 1d as position V.

At the same time, the stationary ejector 10 grips the rear end windings 7 of the front winding layer and remains in this position until the front end windings 9 of the following winding position are transported, grips them and pulls them in the direction of the arrow according to FIG. The end turns 7; 9 are handed over to scrap removal 41. During this time, the device for separating returns to the starting position I.

The essential parts of the traveling device for cutting off wire windings are shown in FIGS. 2 and 3. The wire windings 1 lie on the winding conveyor 2, which in the present case consists of transport chains. In addition to the winding conveyor 2, rails 11; 12 arranged. The device for cutting off wire windings can be moved on these. For example, it can be moved in translation by a cable 13. The device has a drive 14 on which a portal frame with columns 15 and horizontally connecting guide bars 16 are arranged. Slide bars 17 of a slide plate 18 engage in the guide beams 16 and can be displaced horizontally into its working or rest position by means of a working cylinder 19.

A working cylinder 20 for vertical movement of a tool plate 21, which is fixed by guide bars 22, is also fastened to the slide plate 18. Below the tool plate 21 are hydraulic cylinders 23 for the two devices for cutting, the knife lever 24 of which is at the bottom

Insertion tips 25 are provided. 8 and 9 is the formation of the knife lever 24 with

Knives 28 and the insertion tips 25 shown in more detail. The insertion tips 25 are formed in one piece with the knives 28.

In order to safely center and cut the targeted rear and front end windings 7; 9 to ensure during sampling, in a further embodiment, the design of the protection device according to FIG. 6; 7; 10; 11 possible. The knife levers 24 with the knife 28 have insertion tips 25 which are separate from one another. The insertion tips 25 are arranged as separate parts next to the knives 28. The knives 28 have a relatively blunt lower end. This separation enables the rear and front end windings (7; 9) to be gripped and held securely. The design according to FIG. 7 provides that, for example, the left device for cutting is first lowered and the end windings 7; 9 are centered by the special arrangement of the insertion tips 25. This ensures that the same turn 7; 9 is hit safely.

For the removal of the separated front and rear end turns 7; 9 of the winding conveyor 2 is next to this an ejector 10, as in Fig. 1d; 1e shown, arranged.

As shown in FIGS. 4a to 4d and in FIG. 5, the ejector 10 has an ejector arm 26 with a receiving finger 27. 4a and 5, the ejector 10 is shown in the waiting position. The pick-up finger 27 is located above the winding conveyor 2 with the wire windings 1.

By rotating the ejector arm 26 about its longitudinal axis counter to the transport direction of the winding conveyor 2, the pick-up finger 27 dips between the rear end windings 7 and the middle windings 8 after separation (FIG. 4b). The rear windings 7 are thus pulled down over the entire circumference from the middle windings 8 of the winding layer. The ejector arm 26 and the Aufnähmetinger 27 remain in this position until the front end turns 9 of the following turn position reach their area {Fig. 4c). Now the ejector arm 26 rotates about its longitudinal axis and pivots the pick-up finger 71 with the end turns 7; 9 upwards (Fig. 4d).

The ejector arm 26 swings outwards laterally about the vertical axis of rotation of the ejector 10, and the rear and front windings 7; 9 are fed to scrap removal 41.

The entire process of separating and removing the end turns 7; 9 is by one or more sensors 3; 3 '; 3 "triggered,

The transport. The wire turns 1 on the winding conveyor 2 can be tracked, for example, by means of a computer depending on its speed and the distance between the turns. After selecting the number of turns to be cut or a bested turn temperature when cutting, an automatic impulse is sent to the individual drives for traveling, lowering, lifting, cutting, detecting and ejecting,

A further embodiment of the device for separating rear and front end windings 7; 9 described by the middle turns 8, the cut turns. As described above, in this embodiment, a warm-rolled wire is also formed into wire windings 1 by a winding layer and deposited on a winding conveyor 2, the rear and front end windings 7; 9 are separated from the middle turns 8. Several turns follow each other.

The device for cutting off wire windings 1 is opposed the embodiment described above arranged stationary. It cannot be moved. 12 to 15 there is a device with two separate devices 30; 31 shown for severing. In this case, a device 31 is used to cut off the front end turns 9 of the second winding layer and the second device 30 is used to cut off the rear end turns 7 of the first winding layer.

It is of course also possible, with a corresponding control, to provide a device with a device for severing wire windings 1.

To the side of the winding conveyor 2 are one or more sensors 3; 3 '; 3 "arranged, which give appropriate impulses to the computer that controls the system.

As shown in FIGS. 12 and 13, two devices for separating 30; 31 arranged in a row. The front device 30 in the direction of transport serves to separate the rear end windings 7 of the front winding layer and the rear device 31 for separating the front end windings 9 of the rear winding layer, in each case from the middle windings 8. The rear and front end windings 7; 9 are the scrap windings to be removed, while the middle windings 8 are the good windings to be fed to the collecting shaft.

Both devices 30; 31 have the same structure. The device 30 is assigned the sensor 3 ¹ and the device 31 the sensor 3. In each device 30; 31, a stand 32 is arranged on both sides of the winding conveyor 2. A horizontal shaft 33 extending across the width of the winding conveyor 2 is mounted in these stands 32. Two cutting arms 34 are fixedly arranged on this shaft 33 at a predetermined distance from one another. At the front end of each cutting arm 34 is an upper knife 35 with an insertion pointed 36 arranged. Below the upper edge of the winding conveyor 2, the lower knives 35 are assigned stationary lower knives 37. The shaft 33 is connected via a gear 38 to a drive motor 39, by means of which the latter is rotated and the cutting arm 34 thus executes a circular movement.

The operation of the device for cutting wire turns 1 is described below.

When the front end windings 9 are transported past the first sensor 3, the cutting arm 34 of the device 31 is in the upper rest position. Taking into account the selectable rotation time of the cutting arm 34 from the rest to

The computer determines the starting position for the drive motor 39, which causes the shaft 33 to rotate via the gear 38, as well as the position of the intersection and the transport time of the front end turn 9 to be divided from the detection by the sensor 3 to the intersection. The cutting arms 34, which are preferably offset from one another by a small angle in the direction of rotation, carry out the dividing process in short succession after the insertion tips 36 have guided the preselected front end turn 9. Depending on the type of winding conveyor 2, for example chain conveyor or roller table, or depending on the structural conditions in the area of winding conveyor 2, each cutting arm 34 with its upper knife 35, as shown in FIG. 16, performs a double cut against two lower knives 37 or a single cut against a lower knife 37. As a result, as shown in FIG. 16, the test piece 40 is separated out, which falls down into the catching device 6 and is fed to the test laboratory.

14, the cutting arm 34 continues to rotate counterclockwise until it is approximately in the lower position. Here he pulls the front end turns 9 out from the turns 8 by a piece sufficient for the later ejection process. Then the cutting arm 34 rotates Clockwise back into the upper starting position, so that the horizontal further transport of the front end windings 9 by means of the winding conveyor 2 is not hindered.

The rear end windings 7 (FIGS. 1, 2 and 4) are separated in a comparable manner with the device 30. This has a mirror-image structure to the device 31. Starting from the counting impulses of the first sensor 3 or the second sensor 3 ', the cutting arms 34 of the device 30 are set in motion clockwise by the computer by means of their drive from the upper rest position in such a way that the upper knife 35 the rear end winding 7 to be divided into

Cutting position above the associated lower knife 37 hits. When the cutting arms 34 continue to rotate clockwise after the cut, their speed is reduced until they reach a vertical lower position until they come to a standstill. The rear end windings 7 are at least partially pulled down by the middle windings 8. After a sufficient gap has been formed, the cutting arms 34 rotate counterclockwise to the upper rest position without touching the wire turns 1.

When the wire turns 1 are transported further into the area of the ejector 10 by means of the winding conveyor 2, after the impulse has been given by the third sensor 3 ″ or after the counting pulses have been evaluated by the first or second sensor 3; 3 ′, the separated time is set in motion the rear and front end windings 7; 9 are removed as scrap windings by the winding conveyor 2 and are thrown off to the side in the scrap removal 42.

In order to distribute the cutting forces, the cutting of two cutting arms 34 takes place against two lower knives 37, for example according to the arrangement in FIG. 17. When the shaft 33 rotates, after covering a distance a, the right upper knife 35.1 first touches, for example, the front endwin to be cut Exercise 9. after this has been brought into the correct position by the two right insertion tips 36.1. Then the right upper knife 35.1 presses the end turn 9 after the path b - 0 ... 10 mm first against the lower knife 37.1 and initiates the cutting process at this point. After exceeding the cutting force maximum or after completely cutting the wire winding at this point, the end turn 9 now touches the lower knife 37.2. The vertical offset c of the two lower knives 37.1; 37 2 is selected in a range c = 0.2 -xd to 0.8 xd.

At precisely this point in time, when the right upper knife 35.1 has covered a distance of the value c along the lower knife 37.2, the left upper knife 35.2 presses the end turn 9 against the left lower knife 37.3. The shearing process then takes place between the upper knife 35.2 and the lower knife 37.4. The values for the visual cutting process on the left are analogous to those on the right away f = 0 ... 10 mm

Where g = 0.2 x d ... 0.8 x d

Area c - a - 2 x c

d = wire diameter

This means that four cutting processes occur in succession with the same cutting forces that do not add up. The corresponding machine parts and the drive can be designed correspondingly weaker.

The distance c between the lower knives 37.1; 37.2 and the distance h between the lower knives 37.3; 37.4 can enlarge from top to bottom, so that the pieces of waste separated during the double cut fall out without jamming.

Claims

1. A method for separating wire windings which are formed by a winding layer from hot-rolled wire and placed on a winding conveyor in successive winding positions, the starting and ending windings being separated and fed to a device for cutting, controlled by sensors and a computer, characterized in that a device forming part of the device for cutting off wire windings is lowered over the rear end windings (7) of a winding layer to be separated, and by this brings the rear end winding (7) to be separated into a cutting position and at two points of the middle turns (8) is cut off, a sample (40) lying between the two separation points being fed to a catching device (6) and the cut rear end turns (7) being held by the device for cutting and fixed at a point in the area of the separation point and thereby v on the medium wire windings (8) which are moved further on the winding conveyor (2) in the transport direction and then released again by an upward movement of the device for cutting and moved in the transport direction on the winding conveyor (2) as well as the device for cutting over those to be separated front end turns (9) of the following turn length is lowered and by this the front end turn (9) to be separated is brought into a cutting position and separated from the middle turn position (8) at two points, a test piece (40) lying between the two separation points a catching device (6) is fed and held by the device for cutting the separated front end windings (9) and moved at a faster than the transport speed of the winding conveyor (2) in its transport direction and thereby by those on the winding conveyor (2) with its transport speed forward moving middle windings (8) spatially separated and then released again by an upward movement of the device for cutting and moved in the transport direction on the winding conveyor (2) and after covering a predetermined distance those between the successive winding layers and spatially separated from them the rear and front end turns (7; 9) are picked up by a stationary ejector (10) and placed on a scrap removal device (41).

2. The method according to claim 1, characterized in that the separation of the rear and front end windings (7; 9) from the successive winding layers is carried out in a chronological sequence by a device for cutting.

3. The method according to claim 1, characterized in that the separation of the rear and front end turns (7; 9) from the successive layers of turns is carried out approximately simultaneously by a different device for cutting.

4. The method according to claim 1, characterized in that the rear and front end windings (7; 9) via the scrap removal (41) are fed to a scrap shear.

5. Device for carrying out the method according to claim 1, characterized in that the device has a movable on rails (11; 12) parallel to the winding conveyor (2) portal frame with a across the winding conveyor (2) and in the same direction Tool plate (22) which can be moved downwards and upwards and on which the device for cutting the rear and front end windings (7; 9) is arranged, said tool plate having at least one knife lever (24) which is connected to the end windings (7; 9 ) in the cutting posi tion-introducing tips (25) and knives (28) is provided.

6. Device according to claim 5, characterized in that the device for cutting has two knife levers (24) arranged at a lateral distance from one another.

7. Device according to claim 6, characterized in that the lateral distance between the knife levers (28) to each other corresponds to the length of the test piece (40) to be separated from the end turn (7; 9).

8. Device according to claims 5 to 7, characterized in that on the knife lever (24) the insertion tip (25) and the knife (28) are arranged in succession on one component.

9. Device according to claims 5 to 7, characterized in that on the knife lever (24) the insertion tips (25) are arranged laterally next to the knives (28) projecting forward over these, the knives (28) a relatively blunt lower End.

10. Device for performing the method according to claim 1, characterized in that the device has at least one device (30; 31) for separating the rear and front end turns (7; 9), these on both sides of the winding conveyor (2) with A stationary stand (32) is provided, in which a shaft (33) extending at right angles to the longitudinal axis of the winding conveyor (2) and above it is rotatably mounted, on which at least one cutting arm (34) rotatable about its longitudinal axis is arranged. which carries at its front end the device for cutting the rear and front end turns (7; 9), which has an upper knife (35) and insertion tips (36), the upper knife (35) one below the top edge of the winding conveyor

(2) is assigned to the lower knife (37).

11. The device according to claim 10, characterized in that on the shaft (33) two cutting arms (34) are arranged at a lateral distance from one another and in the direction of rotation offset from one another by a range of 6 ° to 19 °.

12. The device according to claim 11, characterized in that the lateral distance of the upper knife (35) on the two

Cutting arms (34) corresponds to the length of the test piece (40) to be removed from the end turn (7; 9).

13. The device according to claim 11 to 12, characterized in that each upper knife (35.1; 35.2) with lower knives (37.1;

37.2; 37.3; 37.4) is in a cutting connection, the lower knives arranged on the first upper knife (35.1)

(37.1, 37.2) and the lower knives (37.3; 37.4) assigned to the second upper knife (35.2) each around a vertical range of c; q = 0.2 d to 0.8 d staggered wind.

14. The device according to claim 10, characterized in that the shaft (33) on which the cutting arm (34) is arranged, an Antrxebseinheit consisting of a drive motor (11) with a gear (12) is assigned.

15. The device according to claim 10, characterized in that the device each have a device (30) for separating the rear end windings (7) of the front winding layer in the transport direction with clockwise rotating cutting arms (34) and a device (31) for separating the has front end turns (9) of the rear turn position in the direction of transport with counterclockwise rotating Suhneid arms (34), these in one predetermined distance from each other along the winding conveyor (2) are arranged.

16. The device according to claim 15, characterized in that each device (30; 31) is assigned a sensor (3; 3 ').

17. Stationary ejector for performing the method according to claim 1, characterized in that the ejector (10) is arranged between the device for separating the wire windings (1) and the collecting shaft for the middle wire windings (8), the ejector (10) has an ejector arm (26) which can be pivoted about a vertical axis and rotatable about its longitudinal axis and has a receiving finger (27) arranged at its front end, and the separated rear and front end windings (7; 9) by the receiving finger (27) jointly by the winding conveyor ( 2) are receivable and can be deposited outside of the same on the scrap removal (41).