CZ268099A3 - Device for coiling and folding back elongated material - Google Patents

Abstract

A device for coiling and uncoiling elongated goods (K), such as wire, cable or the like, onto a drum (13) comprises a support (12) with driving means (25) for a spreader arm (10). The spreader arm (10) is rotatably mounted on the support (12) and supports a gripping arm (14) for coiling and uncoiling the elongated goods (K) onto the stationary drum (13). The gripping arm (14) is formed as a curved V-profile, which has a running track arranged for the elongated goods (K), which running track is oriented towards the drum (13). The said running track is defined by feeding rollers which are mounted within the gripping arm (14). The feeding rollers are spherical in shape and present a rolling resistance near zero to eliminate twisting of the elongated goods (K) during coiling and uncoiling. The device also comprises at least one drum swinging arm (31, 31') connected to the support (12) so as to collect or deliver the drum at the support.

Description

Equipment for shooting and unloading of elongated material

Technical field

The present invention relates to a device for pivoting and twisting an elongate material such as a wire, cable or the like onto a drum, the device comprising a support with a driving arm drive device rotatably mounted on a support to be rotated and racking elongated materials onto a stationary drum.

BACKGROUND OF THE INVENTION

The filming and twisting of wires, cables and the like of elongated material by means of a pivoting apparatus is now known. During filming using such a known device, the rotated materials are subjected to a torsion twist, where one turn when rotating means one turn of twist. Turning counterclockwise causes twisting clockwise and vice versa, clockwise rotation causes twisting counterclockwise. The curl usually occurs in the opposite direction to the curl. When all the material has been twisted as described above, no residual torsion remains, however, the mechanical load still remains in the material as a result of the procedure.

Due to the frictional resistance on the cover arm and in the material, the twist is not linear over the entire length of the material, but the part last rotated will have a noticeably higher twist in the material. 9 compared to previously rotated parts of the material.

Therefore, the non-linearity of the twist that results in mechanical stress in the elongated material during the shooting is not acceptable in some cases. For example, when attaching a cable to the stator of an electrical machine, the cable must necessarily be completely free of, or almost free from, the twist effects, i.e., the cable twist must be linear relative to the cable length. This leads to the fact that one turn during twisting from the drum arbitrarily along the length of the cable should be completely without, or almost without, the effects of twisting.

SUMMARY OF THE INVENTION

To solve this problem, as outlined above, the apparatus of the present invention has a covering arm which, on the side towards the elongate material, constitutes a gripping arm adapted to guide the elongate material in a substantially tangential direction relative to the drum edge. The at least one pivot arm of the drum is attached to the support so as to remove or supply the drum to the support.

In a preferred embodiment of the device according to the invention, the gripper arm has a running track in the form of a curved V-profile. Preferably, the surface of the track that comes into contact with the elongate material is defined by feed rollers that are spherical in shape and exhibit a rolling resistance close to zero, so as to eliminate torsion of the elongate material during swiveling and twisting.

In order to achieve a uniform layer of elongated material rotated on the drum, the covering arm is preferably provided with a device for moving the gripper arm so that the gripper arm is guided along the width of the drum in accordance with the rotation or withdrawal of the elongate material.

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9 · 9 devices are for use with

Preferably, a preferred embodiment of the device according to the invention has two drum pivoting arms connected to a support, one on each side of the support. The two drum rotating arms are arranged to alternately store the rotated drum into the rotating position of one drum rotating arm and to remove the empty drum in the rotating position of the other drum rotating arm, and vice versa.

The present invention further relates to a fastening machine and an intermediate storage device comprising a device for turning and unloading of the aforementioned type and which is intended to feed a cable for fastening the latter into the stator slots of an electric machine.

The device, the fixing machine and the intermediate storage but not exclusively intended high voltage cable to the generator, where the high voltage cable is used in the stator winding, the cable does not have an outer protective covering layer that usually surrounds such a cable.

The cable is preferably of the kind comprising an inner core with a plurality of wires, an inner semiconducting layer surrounding the core, an insulating layer surrounding the inner semiconductive layer, and finally an outer semiconductive layer surrounding the insulating layer. Preferably, the cable diameter is from 20 to 200 millimeters and the conductor cross-section is from 80 to 3000 millimeters square.

especially, fastening

List of figures in drawings

A preferred embodiment of the pivoting device of the present invention will now be described in more detail with reference to the accompanying drawings in which:

Fig. 1 shows a schematic view of a device for fastening a cable in a stator slot of an electric stator. A generator, this device consists of a swiveling device according to the present invention,

Fig. 2 is a side view illustrating the principle of a pivoting device in an embodiment of the present invention;

Giant. 3 shows a section taken along line A-A of FIG. 2, through a gripping arm connected to a swiveling device;

Giant. 4 is a plan view of a preferred embodiment of the pivoting device of the present invention; and

Fig. 5 is a front elevational view of the pivoting device seen in the direction of the arrow P in Fig. 4.

DETAILED DESCRIPTION OF THE INVENTION

When attaching a cable K to a stator S of, for example, an electric generator according to Swedish patent application No.9700364-4 filed simultaneously therewith, entitled "Winding Method and Device for Performing a Double Drum Winch Method, a device similar to that shown in FIG. Said apparatus consists of a swiveling machine 2 and a double drum winch 2 by means of which the cable K to be fixed in the stator S is divided into cable feeders A and B. In an embodiment of the apparatus according to this example, the swiveling machine (2) is Swedish Patent Application No.9700366-9 filed concurrently with this, entitled "Swivel Device.

The principle of the double drum winch 2 according to the invention is illustrated in Fig. 2 to Fig. 5. It can be seen from Fig. 2 that the covering arm 10 is rotatably mounted on the axis 11 and is rotated by a drive device 25, 26 located on the support 12 of the device. The covering arm 10 thus rotates about the center of rotation R, indicated by the dot-dash line 10 ', when the elongated cable-like material is being twisted and twisted. · · ···· · · ··· · ··· ··· * · · · · · ·

K on the stationary drum 13. The covering arm 10 supports a gripping arm 14 which is fixed (so as to be propelled) along the covering arm 10, as will be discussed below.

In order to ensure the twisting and twisting of the cable K without twisting, the gripping arm 14 has a V-shaped cross section with the pulleys 20 fixed in the holders 21, as shown in Fig. 3. The pulley feeders 20 are spherical in shape and serve The spherical pulleys 20 have a rolling resistance close to zero, resulting in the twisting of the cable K being eliminated during the twisting and twisting operation.

Since each bracket 21 is mounted on a spring biased shaft 22 in a V-shaped gripping arm 14, the spherical pulleys 20 are automatically adjustable to move the cable of different dimensions, as indicated by cable sizes K, K 'and K' 'in Fig. 3.

As can be clearly seen in FIG. 2, the support 12 comprises a drive motor 25 which, by means of a belt or chain 26, drives and drives the roofing arm 10 so as to rotate about an axis 11 fixedly attached to the support 12. of the support 12, a coupling F is provided for supporting the drum 13.

The covering arm 10 has an arm 28 whose underside (toward the drum 13) is provided with a screw 29 intended to feed the cable to the gripping arm 14. The screw 29 is driven by a belt 30 or a chain connected to a fixed axis 11; The cable K is therefore pivoted and twisted along the edge of the drum 13.

Giant. 4 and 5 show a preferred embodiment of the apparatus for turning and unloading according to the invention. On each of the front surfaces of the drum 13 there is a conical counterpart 16 of the clutch intended to cooperate with the clutch F

(Fig.2) on the support 12, or with the counterpart 27 of the clutch, which is supported by the free end of each pivot arm 31 and 31 'of the double drum winch as will be now described in more detail i.

Before starting to twist the rotated drum 13, it is necessary to rotate the drum 180 ° so that the twisted cable K is accessible for twisting. The rotation of the drum 13 takes place by each pivot arm 31 and 31 'of the double drum winch.

Advantageously, the pivoting and twisting device according to the invention is provided with two pivoting arms 31 and 31 'forming a so-called double drum winch. There is a pivoting arm of the drum on each side of the support 12. Each pivoting arm 31 and 31 'is provided with a drive device 32 allowing rotation of the drum arms 31 and 31' in a horizontal plane between two positions, outer position D 'or D and inner position C One of the outer positions D ' is intended for twisting (withdrawing) the drum 13 with the cable turned (on the left in FIG. 5), while the other of the outer positions D is the position where the drum 13 is empty (on the right in FIG. 5) and ready for insertion into the internal position C. In the internal position C, the drum is connected to the support 12 and is ready to pivot the cable K (in accordance with the sketch in FIG. 2).

The outer positions D 'and D are alternated left and right. For example, the pivot arm 31 'removes the drum 13 from the inner position C and moves it to the outer position D' where the cable twist begins. During twisting in the outer position D ', the empty drum 13 is fed from the outer position D to the inner position C by means of the pivot arm 31 and is secured to the support 12 where the pivoting of said drum begins. When the latter drum is fully rotated in the inner position C, the first drum (in position D) is twisted. Now the drums are replaced again so that the pivot arm 31 removes the now fully rotated drum and moves

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000 0 00 «000 • 0 0 0 to the D position to twist, more or less at the same time as the empty drum in the D 'position is now moved to the internal position C and attached to the support 12 to be re-positioned filmed.

The recording works as described below. During rotation (when the drum 13 is connected to the support 12 as shown in Fig. 2 and is in position C in Fig. 4), the free end of the cable K is connected to the distal end of the drum 13. The other end of the cable K is assumed of the stator frame S (according to FIG. 1). The rotation of the cable K should be such that only one layer of cable is present on the drum 13. For this purpose, the covering arm 10 is provided with a screw 29 moving the gripping arm 14 so that only one layer of the cable is rotated on the drum 13. the cable K is lifted from the gripping arm 14. The drum rotating arms 31 (or 31 ') are driven from the outer position D (or D') by the drive device 32 towards the rotated drum in the inner position C. The clutch counterpart 27 rotates the drum arm connected to the counterpart 16 of the drum clutch 13 and the drum clutch F on the support 12 is then released. The rotated drum 13 is moved to the outer position D (or D '). In this position, the free end of the cable is accessible to twist the cable from the leading edge of the continuous winding drum. Almost at the same time (once the rotated drum has left the support 12 by the drum rotating arm), the second drum rotating arm 31 'tilt with the now empty drum toward the support 12 to perform a renewed cable twist operation. When the clutch F of the support 12 has received an empty drum, the connection between the clutch counterpart 27 of the drum swing arm 31 'and the counterpart 16 of the drum clutch 13 is released, then the drum swing arm 31' returns to the outer position D '(i.e. wait for one more drum shoot.

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It is clear that the drum rotary arms 31 and 31 'operate alternately, so that during the first phase of the moment the drum is fully rotated in the outer position D and the empty drum is in the outer position D', while during the second phase the fully rotated drum is in the outer position D and the empty drum is in the outer position D.

While the pivoting device of the embodiment of the present invention has been described in connection with the preferred embodiment shown in the drawings, it will be apparent to one skilled in the art that modifications to the various parts may be made without departing from the principle of the present invention. Therefore, the invention should not be considered limited to what is shown and described with reference to the drawings, but is only defined by the appended claims.

Claims (12)

PATENT CLAIMS OF MATERIAL (K) An apparatus for pivoting and twisting an elongate material (K), such as a wire, cable or the like, onto a drum (13) and comprising a support (12) with a drive device (25) for a covering arm (10) that is rotatable mounted on a support (12) for pivoting and twisting the elongate on the stationary drum (13), wherein the covering arm (10) on the side facing the material (k) has a gripping arm (14) which is adapted to guide the elongate material (K) in a tangential direction, relative to the edge of the drum (13) and further wherein at least one rotatable drum arm (31, 31 ') is connected to the support (12) so as to be able to remove or convey the drum (13) to support. Apparatus for pivoting and unloading of elongate material according to claim 1, characterized in that the gripping arm (14) is formed into a curved V-profile with running tracks (20, 21) adapted for the elongate material (K), this running track is oriented towards the drum (13). Apparatus for pivoting and unloading of elongate material according to claim 2, characterized in that the feed rollers (20) are fixed in the gripping arm (14) so as to form a running track with a V-profile. The elongate material winding and twisting device according to claim 3, characterized in that the feed rollers (20) are spherical in shape and exhibit a rolling resistance approaching zero, eliminating the twisting of the elongate material (K) during the twisting and twisting process. · · · · · · Φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ The material device of (10) is assembled and twisting the elongate of the preceding claims, wherein the covering arm (29, 30) is intended to be rotated by any one of the movable devices with the gripping arm (14) so as to at least one layer of elongate material (K) has been rotated onto the drum (13). Apparatus for pivoting and unloading of elongate material according to claim 5, characterized in that the device (29, 30) for moving with the gripper arm (14) consists of a screw (29) which is driven by rotation of the covering arm (10). ) by means of a belt or chain (30) mounted on an axis (11) attached to the support (12). Apparatus for pivoting and unloading of elongate material according to claim 1, characterized in that the pivot arm (31, 31 ') with one side of the support (12) and consists of a drive device (32) allowing rotation between the pivoting position ( D 'or D) and a pivoting position (C), and which is attached to the support (12). Apparatus for pivoting and unloading of an elongate material according to claim 7, characterized in that the pivot arm (31, 31 ') at one free end is provided with a clutch counterpart (27) for connection to the clutch counterpart (16) disposed on the the drum (13), the drum (13) being releasable and attachable to the support (12) by means of a pivot arm (31, 31 ') in the pivoting position towards the support (12). Apparatus for pivoting and unloading of elongate material according to any one of claims 1, 7 or 8, characterized in that the support (12) is formed with two drum rotating arms (31, 31 '), one on each side of the support. , for alternately placing the rotated drum (13) in the twist position (D 'or D) of one of the pivot arms, 4 44 44 9t 4 4 44 44 44 44 44 44 44 44 44 and for removing the empty drum (13) from the filling unit. position (D or D ', respectively) of one of the pivoting arms. 10. Equipment for shooting and bottling elongated material according to any of claims 1 to 9., characterized by it means that is elongated material is high voltage cable. 11. Equipment for shooting and bottling elongated material according to of claim 10., v y z n a č u j ící se by making a high voltage cable is such the kind that consists of an inner core with a plurality of wires, an inner semiconductive layer surrounding the core, an insulating layer surrounding the inner semiconductive layer, and finally an outer semiconductive layer surrounding the insulating layer. An apparatus for winding and unloading an elongate material as claimed in claim 10 or 11, wherein the high voltage cable has a diameter in the range of 20 to 200 millimeters and a conductor cross-section in the range of 80 to 3000 millimeters square. A fastening machine comprising an apparatus for rotating and unloading an elongate material according to any preceding claim, for feeding a cable (K) when fastening the cable in the stator slots (S) of the electrical machine. An intermediate storage device, comprising an apparatus for rotating and unloading an elongate material according to any one of the preceding claims, for feeding the cable (K) while fastening the cable in the stator slots (S) of the electrical machine.