US2954180A - Coiling strand material - Google Patents

Description

Sept. 27, 1960 E. J. CRUM comm STRAND MATERIAL 2 Sheets-Sheet 1 Filed June 13, 1956 INVENTOR.

E. J. CRUM filfwfg- ATTORNEY Sept. 27, 1960 E. J. CRUM COILING STRAND MATERIAL Filed June 15, 1956 2 Sheets-Sheet 2 I Q! I n IIIIIIIII4'III;(V. l 5

BY E.J. CRUM ATTORNEY Patented Sept. 27, 1960 ice . 2,954,180 Connie STRAND MATERIAL Eben Jefferson Crum, Baltimore, Md., assignor to Wirecrafters, Inc., Towson, Md., a corporation of Maryland Filed June 13, 1956, 'Ser. No. 591,230

Claims. (Cl. 242-83) This invention relates to the coiling and uncoiling of strand or elongated materials, such as wire, rope, hose, cable, and others.

In the arrangement of such materials in coil form, a conventional practice comprises providing the coils concentric of each other. Large coils may be thus provided or groups of smaller coils connected together.

Providing coils in this concentric manner frequently results in the slippage of one or more of the coils out of place. Ideally, each coil of a group should lie on top of its preceding coil. However, it is practically impossible to achieve this ideal condition with concentric coils unless they are supported against lateral shifting by aspool or some other kind of'holding device. The coils of a completely unsupported group of concentric coils tend to shift laterally, whereupon they become displaced vertically relative to each other. This becomes a difficult situation in the subsequent uncoiling operation when it is desired to use the material. Because of this lateral shifting and displacement, the uncoiling is likely to be met with frequent tangles.

One of the objects of the present invention is to provide means for arranging coils of strand material which eliminates the lateral shifting of the coils and the relative displacement thereof with respect to each other.

Another object of the invention is the provision of means for arranging coils of strand material so that the uncoilingthereof does not tend to produce tangles.

These and still further objects, advantages and features of this invention will appear more fully from the following description considered together with the accompanying drawing.

In the drawing:

Fig. 1 is a side elevational view of a device being used to provide an arrangement of coiled strand material in accordance with this invention.

Fig. 2 is a plan sectional view along the line 2-2 of Fig. 1.

Fig. 3 is a plan view of a length of wire coiled and arranged in accordance with this invention to illustrate the principle thereof.

Fig. 4 is a side elevational view of the wire as arranged in Fig. 3.

\Fig. 5 is a schematic plan view of an uncoiling device.

Fig. 6 is an enlarged section along the line 6-6 of Fig. 5..

Fig. 7 is an enlarged section along the line 77 of Fig. 5.

The method of this invention comprises essentially forming consecutive coils of a strand material and arranging them on a horizontal surface so that each coil is displaced eccentrically from its preceding coil by an amount which is at least sufficient to prevent slippage of the coils relative to each other. This is clearly shown "in Fig. 3 where the second 'turn 9 is displaced to the right from the first turn 8, the third 10 is displaced from the second turn 9 an equal distance, and so forth.

In Fig. 1 apparatus for automatically carrying out this method is shown, and it comprises as one part a coiler of the type described in my US. Patent No. 2,743,066 having a hollow stationary casing 11 supported by any suitable means, such as frame members 12. Within said casing there is rotatably mounted a hollow vertical shaft 13, the lower end of which is rotatably connected to a circular drum or block 14 by means of a collar bearing 15 and whereby the drum is carried by the said shaft. The shaft may be driven by any suitable exterior means (not shown), such means being well known in the art and need not be described herein.

A horizontal upper ring gear 16 is secured to the bottom of the casing 11 and a similar lower gear r17 is secured to the top of the drum 14, both gears being concentric with the shaft 13. Secured to and extending laterally from the shaft 13 is an arm 17a which carries a vertical rotatable shaft 18 in a tubular bearing 19. The ends 'of the shaft 18 are secured to gears 20 and 21 for rotation therewith, which gears are in mesh with the gears 16 and 17, respectively, as shown. By these means, the gear 17, and hence the block 14, is held in the same i stationary position asthe casing 11, irrespective of the rotation of the shaft 13, since the gears 16 and :17 cannot move relative to each other so long as they are connected together through the gears 20 and 21 and shaft 18.

Another arm 22 is also secured to and extends laterally from the shaft 13. The outer end of the arm 22 carries a bracket 23, the lower end 23a of which is disposed at an outward angle and which rotatably carries a guide sheave 24. The upper end of the drum 14 has an annular upwardly extending flare 25 and the lower end of the sheave is on a horizontal line just below the top of the drum. The arm 22 rotatably carries another guide sheave 26 which extends part way through a vertical slot 27 of the shaft 13. By these means, the rope or wire 28 to be coiled is led downward through the hollow shaft 13 over the sheave 26, out through theslot 27,' over the sheave 24, to the drum 14, whereby rotation of the shaft 13 will cause the rope or wire to be wound about the periphery of the stationary drum 14. Each turn or convolution added to the drum causes the preceding turns to slide downward a corresponding distance. However, the bottom of the drum is provided with a flange 29 on top of which a foot member 30 of a peeling device revolves.

, The foot member comprises the bottom of a vertical leg 31, connected to an outwardly extending arm 32 carried by the bracket 23. Although any suitable means may be employed for supporting the arm 32, in the embodiment illustrated, its outer end 32a is bent in line with the axis of the sheave 24 and is secured to the shaft 33 upon which the sheave is rotatably carried. By these means, the coil around the drum is continuously peeled from the bottom as the bracket 23 revolves, the lower convolution of the coil being on the outside of the leg 31. Accordingly, the revolving of the bracket 23 accomplishes two purposes, namely, (1) winding of the rope or wire in the form of a coil about the top of the drum and (2) unwinding or peeling of the coil from the bottom.

As the coil is peeled from the bottom, it drops by gravity and falls as indicated hereinafter.

In order to maintain sufficient friction of the wire or rope against the face of the drum 14, and to avoid strands from dropping too rapidly or prematurely without benefit of the action of the peeler, a group of vertical rollers 48 is carried on spring loaded arms 52 which are pivoted to a stationary shelf 49. The shelf 49 is carried on brackets 50. The springs 51 are mounted between the arms 52'and abutments 53'on the shelf 49 so as to urge the rollers 48 in gentle contact with the wire or rope on the face of the drum. 'Consequently, as the leg 31 moves about the drum, it passes between the drum and the rollers. The latter moves outwardly against the action of the springs 51 each time the leg 31 passes and is returned immediately by the springs.

Beneath the coiler is a track composed of a pair of parallel rails 54, 54 on which a wheeled cart 55 travels back and forth. This motion may be imparted to the cart by any suitable means, one suggested means being illustrated in Fig. 1 and which comprises a horizontal shaft 56 having reverse threads 57 and 58. This shaft is mounted for rotation in bearings 59 and 60 and is threadedly engaged with a yoke 61 secured to the cart 55, as shown. The shaft is driven by a motor 62 through a suitable coupling 63.

A hydraulic jack 64 has a stationary base 65 secured to the cart 55 and a vertically movable ram 66 associated therewith. A platform 67 is secured to and carried by a flange 63 at the top of the ram 66.

The platform 67 is provided with two pairs of parallel cleats 69, 70 and 71, 72 for removably straddling the legs 73 and 74, respectively, of a skid or pallet 75.

The vertical movement of the ram 66 is controlled by an electrically operated hydraulic valve 76 which is hydraulically connected to the jack 64 by a cable 77 and electrically connected to a photoelectric cell 78 by wires 79.

The photoelectric cell 78 is positioned at one end of the tracks facing the other end and a light beam source 80 is stationed at the said other end, the light beam being directed at the photoelectric cell at a level just above the place where it is desired to deposit the coils of material on the pallet.

When the beam of light from the light source 80 striking the photoelectric cell 78 is broken, the valve 76 is placed in operation to lower the ram 66 until the beam is again restored to the photoelectric cell.

In actual operation, the electric motor 62 is started which, by rotating the shaft 56 relative to the yoke 61, has the effect of causing the cart 55 to move back and forth on the tracks 54, 54. With the beam of light from the light source 80 shining on the photoelectric cell 78, the pallet or skid 75 is maintained at a constant elevation.

The coiling device is then started which has the effect of dropping on the pallet 75 a continuous series of coils, each coil being displaced relative to its preceding turn, thereby forming a first horizontal layer 81 of coiled wire on the pallet, as shown. Upon the automatic reversal of the motion of the cart 55 on the tracks 54, 54, a second layer 82 of coiled wire is formed on the first layer 81. This continues until the desired number of layers have been formed. As the layers build up on the pallet, they intercept the light beam from the source 80, thereby actuating the valve 76 to lower the pallet until the beam is again restored to the photoelectric cell. Thus, the layers are each placed on the pallet at a substantially constant elevation which provides uniformity among the layers and also permits placing the coiler closer to the pallet to avoid undue spreading of the coils.

The layers as they are thus formed on the pallet are distinguishable from coils provided by other means in the herringbone side pattern developed. See Fig. 1.

After the desired number of layers has been formed, a fork lift truck (not shown) or other means may be used to discharge the loaded pallet, whereupon another empty pallet is substituted, the height of the ram reset, and the procedure repeated.

When it is desired to uncoil the strand material from storage on the pallet for use, the loose end of the wire on the uppermost layer is pulled. The likelihood of one loop getting tangled in another is remote, because of the definite offset position which each turn is made to assume with respect to its adjacent turns, thereby avoiding lateral slippage and the entanglements caused thereby.

A device for use in uncoiling coiled Wire is shown schematically in Figs. 5, 6 and 7, and it comprises means for twisting the wire about the longitudinal axis for each coil that is unwound in a direction and in an amount to compensate for the twist that is normally imparted to a coil about its longitudinal axis when it is pulled out straight. It comprises a housing 83 carried 011 a fixed bracket 84 having a vertical aperture 85 therethrough for rotatably carrying a hollow vertical shaft 86 on bearings 86A and 86B. The upper end of the shaft 86 has an outward flange 37 which rests on the top of the housing 83. The shaft 86 extends below the bottom of the housing 83 and is secured to a pulley wheel 88 for rotation therewith. Below the pulley wheel 88 a collar 89 is connected for rotation to the shaft and carries on one side, eccentrically of the shaft 86, a bifurcated bracket 90 on which is rotatably mounted a grooved wheel 91 tangent to a Vertical line passing through the axis of the hollow shaft 86. On the other side of the collar 89 is an outwardly and downwardly curved arm 92 having fingers 93 and 94 which contain loops 95 and 96, respectively. The coiled wire 97 or other elongated material is passed through these loops, then over and around the grooved wheel 91 and hence upward through the hollow part of the shaft 86. It is then passed around a drive wheel 98 several times and hence discharged as needed; The wheel 98 is mounted for rotation on a horizontal shaft 99,'the latter being rotatably mounted in fixed or stationary bearings 100 and 101. The shaft 99 is geared to a vertical shaft 102 by means of bevel gears 103 and 109 or any other suitable means.

The vertical shaft 102 is rotatably mounted in fixed bearings 105 and 106 and carries a pulley wheel 107 that is geared to the pulley Wheel 88 by a belt 108.

When the wire 97 is pulled upward above the wheel 98, it causes rotation of this wheel and also, through the gears 103, 109, pulley wheels 107, 88, and belt 108, rotation of the hollow shaft 86. This causes the "arm'92 and grooved wheel 91 to turn and hence untwist thewire before it advances upwardly through the hollow shaft 36.

The pulleys 88 and 107 are preferably of the Variable V-belt type in order to vary the relative speeds thereof. The proper operation of the device requires the diameter of the coils and that of the wheel 98 to be the 'same. The variability between the pulleys 88 and 107 permit compensating for any differences which may develop between the size of the coils and the wheel 98 while the device is in operation.

Having thus described my invention, I claim:

1. The combination with a device for receiving an elongated material, coiling it and discharging it in'coiled form; a reciprocable member having a horizontal surface for receiving the coiled material from the device and supporting it; and means for effecting reciprocation of the member to cause the coils to be deposited on the horizontal surface in layers with consecutive coils'of each layer in overlapped eccentric relation.

2. The combination as defined by claim 1 and means for changing the elevation of the reciprocable member.

3. The combination as defined by claim 2 in which the elevation changing means is effective to lower the reciprocable member a given interval for each layer that is added thereto.

4. The combination as defined by claim 3 in which the elevation changing means comprises a hydraulic elevator having an electrically operated hydraulic valve for changing the elevation, said valve including a photoelectric cell, and a light source for exciting the photoelectric cell to hold the valve out of operation, said cell and light source being arranged relative to each other and to the horizontal support to effect an interruption of a light beam from the light source by consecutive layers of the material as they are added to the horizontal support. I i

5. The combination as defined by claim 1 wherein the means for reciprocating the member comprises a shaft having reverse threads, a yoke fixed to the member and threadedly engaged with the shaft, and means for rotating the shaft.

References Cited in the file of this patent UNITED STATES PATENTS 6 Arkema et a1. Apr. 24, 1934 Walsh et al. Sept. 10, 1940 Bruestle Oct. 1, 1940 Wagner Sept. 10, 1946 Sibley Nov. 15, 1955 Drummond et a1. Feb. 28, 1956 Taylor Mar. 13, 1956 Rayburn Mar. 27, 1956

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