DE2023684A1 - Device for unwinding wire-shaped material from a reel - Google Patents

Description

Harrisburg, Penna., Y. St. A.

Device for unwinding wire-shaped material from a reel.

Priority * Great Britain? May 14, 1969;

24519/69

The invention relates to an unwinding device wire-shaped material, e.g. wire or cord, from a stationary drum or spool on which the material is wound is.

A device for unwinding wire-shaped material identifies according to the invention by an unwinding head with a bushing with a bore which slidably receives a shaft and rotates about it, the shaft extending axially with respect to a stationary drum or reel of wire material to be unwound and the bushing is arranged in an opening of a floating plate, which with respect to the bushing about a to the axis of rotation of the Shaft normal pivot axis is pivotable} by a unwinding arm connected to the floating plate at one end and a disc for unwinding at the other end of twist material from the drum or spool, if

009847/1362

Bayerische Vereinibank Munich 820993

AIdP 2709 - 2 -

a tensile force is exerted on the wire-like material which causes the floating plate to pivot about its pivot axis is pivoted; and by a ball ring connected to the floating plate on the side remote from the arm Liner is connected and rotates about an axis of rotation that corresponds to the pivot axis of the floating plate and the axis of rotation of the shaft is generally perpendicular with the ball ring against a wall of the drum or spool or one therebetween lying surface works.

An embodiment of the invention is described below under Described in more detail with reference to the drawings. Yon the figures show:

Figure 1 is a sectional view of an inventive Embodiment of an unwinding device;

FIG. 2 shows a partial plan view of the device according to FIG. 1;

Figure 3 is an elevational view of the unwinder of Figure 1 in operation.

The device has a main base 1 which is supported on a stand 2 arranged in the center or near the center of the base 1 stands. The stand 2 has a bore 3. A shaft 4 stands with a foot part in the bore 3 of the stand 2, with the bore has a larger diameter than the shaft 4 and the annular clearance is taken up by a bush 5 will. The individual parts are preferably made of mild steel and are connected to one another by welding.

The unwinding head has a preferably made of soft steel Plate 6, which has an opening to which one end of a sleeve 7 is welded, which is normally in

0098 * 7/1362

AMP 2709- - 3rd -

'with respect to the plate 6 and in a sliding fit on the Wave 4 fits. The sleeve 7 is arranged on the side of the plate 6 remote from the base 1. A liner 8 with a bore, which is dimensioned so that the bushing can slide on the sleeve 7, and which preferably consists of phosphor bronze, is in an opening of a floating plate 9 arranged. The plate 9 is attached to the bushing 8 by a pair of clamping screws 10 (FIG. 2) aligned with one another held, wherein the lower end of the liner 8 is slightly above the underside of the floating plate 9, as Fig. 1 shows. The 'liner 8 is freely rotatable about one of the clamping screws 10 formed axis, line sleeve 11 is the upper end of the sleeve adjacent to this held by means of a stud screw 25 and one of these diametrically opposite Press screw 26. An annular shoulder 12 is cut into the underside of the sleeve 11 for Receiving a thrust bearing 15. An annular shoulder 14 is cut into the top of the liner 8. That Thrust bearing 13 and the lower sleeve 8 are through a Compression spring 15 stretched apart, which the sleeve 7 at a distance surrounds and between the underside of the thrust bearing 13 and the shoulder 14 of the liner 8 acts.

An unwinding arm 16 is by means of clamping screws 17 at one end attached to the top of the floating plate 9 and extending a little beyond the floating plate 9, namely radially to the shaft 4. At its free end, the arm 16 ends in a downwardly directed finger 18. A pulley 19 is held on the underside of the arm 16 by means of a clamping screw 20 which is adjacent to the finger 18 is guided through the pulley bore so that a small space between the circumference of the pulley 19 and finger 18 remains. The disc hole has one

0098A7 / 1362

AICP 2709 - 4 - '

Diameter which is larger than the outer diameter of the screw 20, and the annular clearance is taken up by a bearing bush 21 ₀

A ball ring 22 is on the floating plate 9 on the Arm 16 attached opposite side of the pivot axis formed by the clamping screws 10. Ball ring 22 is used held on the floating plate 9 by a clamping screw 23 which is guided through the inner ring 24 of the ball ring 22 is. The outer ring 25 'rests on the top of the plate 6. The ball ring 22 rotates about an axis which is related is generally perpendicular to the pivot axis formed by the clamping screws 10 and the axis of rotation of the shaft 4.

When assembling the unwinding head, the ball ring 22 secured in position on the floating plate 9 by tightening the clamping screw 23. The liner 8 is through Tightening the clamping screws 10 rotatably held in the opening in the floating plate 9. Then the floating one Plate 9 is arranged on plate 6 by sliding sleeve 8 over the sleeve. Then the Feder.15 over the Sleeve 7 pushed down until its lower end on the Ring shoulder 14 of the liner 8 rests. The thrust bearing 13 is fitted on the shoulder 12 of the cuff 11, which then pushed over the end of the sleeve 7 and fixed there by screwing the stud screw 25 in its position will. The unwinding arm 16 is screwed into its position on the floating plate 9 by screwing in the clamping screws 17 attached. A drum or spool of wire-like material is then produced by sliding the drum or spool onto the Shaft 4 arranged on the base 1. The pre-assembled unwind head is then attached to the shaft 4 by the sleeve 7 is pushed over the shaft until the bottom of the plate 6 is on top of the drum or

G09SU / 1 362

AMP 2709 - 5 -

The spool is in contact and the unwinding head is fastened to the shaft by tightening the clamping screw 26 up to the shaft 4 will. The free end of the wire-like material is guided around the pulley 19 to a device on which it is processed, for example into a machine for the production of ladders. "

In operation (Pig. 3), when the wire-like material, e.g. B. a wire 27 wound on a drum 28, via the pulley 19 on the rotary arm 16 an upward pull is exerted, the floating plate 9 tends to pivot away from the plate 6 along the pivot axis formed by the tensioning screws 10, wherein the outer ring 25 'of the ball ring 22 remains as the only connection point between the floating plate / ^ and the plate 6. This reduces the resistance of the device to rotation, since the friction to be overcome during unwinding is limited to the area of the outer bing 25S in contact with the plate and not over the entire surface in contact with the plate 6 the floating plate extends. While the floating plate 9 rotates as a result of the movement of the ball ring 22 during unwinding, the sleeve 8 rotates around the sleeve 7 (since the floating plate 9 and the sleeve 8 are connected to one another by means of the clamping screws 10), and the spring 15 and the Thrust bearings Ti also rotate around the sleeve 7. The annular clearance between the floating plate 9 and the bushing 8 allows the pivoting effect when the floating plate 9 rises above the surface of the plate 6 with the exception of the ball ring 22.

When the unwinding process is finished, the train leaves on the wire-like material after, and the floating plate 9 falls

0 0 9 8 A 7/1 3 6 2 BAD ORIQINAi

AMP 2709 - 6 - ■

back on the surface of the plate 6, thus exerting a frictional force between the entire abutment areas of the floating plate ^ and the plate 6 from.-Oas has the consequence, that the rotational movement of the unwinding arm 16 is braked.

In a modified embodiment of the invention that can The device can be mounted horizontally instead of vertically, or the ball ring or other rollers can be installed in an opening in the floating plate instead of being arranged on its edge »

Claim

009847/1362

Claims (5)

.ABiP 2709 --- Τ- .Patent claims : 1. Apparatus for unwinding wire-like material, characterized by an unwinding head with a sleeve (8) with a bore which slidably receives a shaft (4) and rotates about this, the shaft (4) being axially with respect to a stationary drum or spool (28) of wire-shaped material (27) to be unwound and wherein the bushing (8) is arranged in an opening of a floating plate (9) which, with respect to the bushing * (8), is about one to the axis of rotation of the shaft (4) normal pivot axis is pivotable; by an unwinding arm (16) connected at one end to the floating plate (9), which at its other end has a disc (19) for unwinding wire material from the drum or spool (28) when onto the wire-like material (27) a tensile force is exerted which causes the floating plate (9) to be pivoted about its pivot axis} and by a ball ring 22) which is connected to the floating plate (9) on the side of the bushing remote from the arm: (16) (8) is connected and rotates about an axis of rotation which is generally perpendicular to the pivot axis of the floating plate (9) and to the axis of rotation of the shaft (4), the ball ring (22) against a wall of the drum or spool (28) or a surface (6) in between acts. ■ 2. Apparatus according to claim 1, characterized by ch a plate (6) which is arranged at one end of a sleeve (7), which one for pushing onto the Shaft (4) provided bore, wherein the sleeve (7) extends through the bushing (8) and the floating Plate (9) rests against the plate (6). 00984 7/1362 BATH ORIGINAL AMP 2709 - £ "- 3. Device according to claim 2, characterized in that that a cuff (ll) is attached to the other end of the sleeve (7) and a compression spring (15) between the sleeve (8) and the sleeve (11) acts and presses the floating plate (9) against the plate (6). 4. Apparatus according to claim 3 »characterized in that that the compression spring (15) engages the sleeve (ll) via a thrust bearing (13). 5. Device according to one of claims 1 to 4? through this gekennzeichne t that the bushing (8) in the opening of the floating plate (9) on a pair of axially aligned tensioning screws (10) are attached, which form the pivot axis of the floating plate. 00 9 8 A 7/1 362 3. Blank page