FR2833249A1 - Equipment for rolling a wire evenly on to a bobbin, comprises a groove which has means to guide and clean the wire and is moved laterally by crossed thread screw linked mechanically to the bobbin - Google Patents

Abstract

A temporary connection electric wire passes through a cleaning unit (18) and a groove (14) before passing under a roller (17) to a bobbin. The groove is mounted on a support (15) which has a finger engaging with a cross threaded screw (12) to give a lateral motion in front of the bobbin. The rotation of the screw may be synchronized with the rotation of the bobbin by a chain drive or toothed belt

Description

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The present invention relates to a reel for winding a wire of defined material so as to obtain a correct and orderly winding on a spool of suitable shape.

The invention provides, by its improvements, a winding of the wire on a receiving coil in a rational manner. Indeed the wire must be guided to avoid any overlap which always determines a disparate winding
The invention in its design provides very significant advantages over the electric wire winders that are commercially available under the term of electric extension cord. These are either manual or mechanical winding.

 These reels or extensions allow a worker to use with a source of electric current his tools on a site over more or less close distances.

When using a reel, it is essential to comply with the manufacturer's instructions.

Indeed the wire wound on a coil if the electric current flows in the latter there occurs the phenomenon of induction or magnetic field with a significant rise in temperature in the coil.

 After these explanations it is advised that the user unwinds the thread of the spool over a very long length to avoid these unpleasant inconveniences.

In commercial winders the worker after use must wind the wire on a spool. With his right hand he activates the rotation of the spool thanks to a finger provided.

 With his left hand he grasps the electric wire between his thumb and forefinger to guide the wire during winding.

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désagréable. Cette opération très fastidieuse présente pour l'ouvrier une servitude qui n'est 1 pas toujours appréciée. De plus le guidage manuel du fil présente souvent des difficultés pour éviter son chevauchement. On construction sites the wire is often in contact with mud or impurities which is

unpleasant. This very tedious operation presents an easement for the worker which is not always appreciated. In addition, manual guidance of the wire often presents difficulties in avoiding overlapping.

According to the devices used which are found in the trade which make it possible to wind the wire on the reel we have noted
Over the few years covered by said research, we have the following patents: -n 2366207 WERKE Industries - n 2399969 BRUSSEL André - no 2420500 GROSI Oscar - no 2522634 MURATA Hans
Of these patents, that of BRUSSEL André mainly concerns the winding of cables used in the navy. As for the others, they come under their use of textiles in particular.

 Figure 1 shows the invention which will be written below, by its essential characteristics provides very useful improvements in its use and any guarantee in its use.

 In FIG. 2, the coil 1 is centered on the bearing 2, it is held laterally by a flange machined on this bearing 2 and at the other end by a washer 3.

 On the coil 1 is fixed by screws a support 4 which receives the appropriate electrical connection elements.

 The bearing 2 is hollow and an axis 5 passes in its center to make the support 4 integral with a wheel 6 fixed on this axis 5.

The assembly thus produced means that the rotation of the coil 1 is equal to the rotation of the wheel
6.

 The bearing 2 is fixed on a base 7 which allows the position of the coil 1 in space. The shape of this base is not limiting, this base 7 is intended to obtain obvious stability of the coil 1 and to form with this base 7 a very rigid assembly.

 The basis of the invention is defined by an assembly which will make it possible to guide the winding of the wire on the spool 1.

In FIGS. 3 and 4 we have an overall diagram consisting of a plate 8 fixed by its rear part to the base 7.

This plate 8 receives two bearings 9 fixed by the screws 10. In order for these two bearings 9 to be aligned, two connecting bars 11 ensure their position during assembly. i These bearings 9 receive in their center a screw 12 with crossed threads and machined over a determined length. This arrangement by a thread machining tip allows a finger 13

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 A slide 14 has a bore which receives the crossed thread screw 12. The finger 13 is placed in the slide 14 so as to be in contact with the screw 12.

 This assembly thus produced slide 14 and finger 13 behaves if the screw 12 is in rotation like a nut and ensures the lateral displacement of this assembly FIG 6-7.

 The crossed thread screw 12 is held laterally between the two bearings 9, the slide 14 slides on the crossed thread screw 12.

 The finger 13 secured to the slide 14 has a machined end with a stud which fits in one of the crossed threads of the screw 12. It is obvious that the rotation of the screw 12 gives an axial displacement of the slide 14 in one direction or in the other.

 This slide 14 being intended to guide the wire 16 to be wound on the reel 1 we have a guide 15 materialize by a groove which receives the wire 16. This guide 15 is fixed on the slide 14 and in the front part of this guide 15 a roller 17 maintains the wire 16 at the bottom of the groove.

 In the rear part on the guide 15 we have a support 18 in which is placed a rubber washer 19 held by a steel washer 20. The wire 16 to be wound passes through the washer 19 and is braked slightly. This tension is necessary to facilitate the guiding of the winding on the reel 1. The wire 16 sometimes being in contact with impurities during its unwinding is thus cleaned during its winding.

 With regard to the writing arrangement of the slide 14 sliding on the cross-threaded screw 12, we note that the cross-threaded screw 12 supports all the components of axial tension, with the slide 14 which guides the wire 16 to be wound on the coil 1.

 In addition, the slide 14 and guide 15 assembly must tip during the winding of the wire 16 on the coil 1.

 In fact, the coil 1 increases in diameter by storing the wound wire 16, therefore the whole system must occupy an appropriate angle visible in FIG 9.

 In order to overcome these shortcomings in guiding the slide assembly 14 and crossed thread screws 12, we have a guide rocker 21. The latter consists of two flat bearings 22, centered on either side of the crossed thread screw 12, and connected by two centering guides 23 in FIG. 7.

 These centering guides 23 slide in the bores provided in the slide 14.

 This clever assembly serves to avoid the axial cant of the slide 14 with respect to crossed threaded screws 12.

 It remains to define the pitch of the crossed threads 12, that is to say the axial displacement for a rotation of crossed threaded screws 12, it is by definition equal to the diameter of the wire 16 to be wound.

The process of guiding the wire 16 to be wound on the reel 1 having been described, it is necessary to establish the mechanical connection which exists between the reel 1 and the cross thread screw 12.

 In the description of the guide of the wire 16 to be wound on the reel 1 we know that the crossed thread screw 12 gives a side-to-side movement in front of the reel 1.

 The pitch or displacement of a thread for a rotation of the crossed thread screw 12 is equal to the diameter of the thread 16 to be wound on the spool 1.

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In the invention which concerns us, a rotation of the coil 1 must be equal to a rotation of the cross thread screw 12.

Mechanically we have several mounting solutions that we will develop and describe.

1) First solution: FIG-10-11-12 The wheel 6 secured to the connecting axis 5 is by mounting connected to the coil 1 by the support 4 At the end of the cross-threaded screw 12 and on the same side as wheel 6 we have a receiving wheel 25.

The wheel 6 and the receiving wheel 25 are each replaced by a chain sprocket 27 of the same number of teeth, that is to say identical and connected together by a chain 26.

We will obviously have an equal rotation of wheel 6 and the receiving wheel 25.

2) Second solution: FIG-14-15-16-17, The wheel 6 and the receiving wheel 25 are replaced by pulleys 29 suitable for receiving the mounting of a toothed belt 28.

The toothed belt 28 in its inner part of the reliefs or notches 30.

 These notches 30 are placed at a determined pitch or interval in order to constitute the active part of the toothed belt 28.

The identical pulleys 29 have at their periphery grooves 31 placed axially and whose circumferential pitch is the same as that of the toothed belt 28. In reality each of the notches 30 of the toothed belt 28 behaves in the groove 31 of the pulley 29 like a key.

 The toothed belt 28 is provided with notches 30 which engage between the grooves 31 of the pulleys 29 and this combination makes it impossible for the belt 28 to slide relative to the pulleys 29 and the speed ratio of the two pulleys 29 remains constant.

The two proposed solutions provide an effective mechanical connection between the wheel 6 and the receiving pulley 25.

However it should be noted that for the first solution the chain sprockets 27 and the chain
26, special maintenance is required: lubrication and provision of an appropriate protective casing
For the second solution it is obvious that the casing is essential but without any particular maintenance. The toothed belt 28 and the pulleys 29 are only sensitive to impurities which could be interposed between the toothed belt 28 and the pulleys 29.

3) Third solution:
The wheel 6 and the receiving wheel 25 to obtain their mechanical connection can each be replaced by an end piece 32.

 Each end piece 32 fits on the one hand on the connecting axis 5 and on the other hand on the cross-pitch screw 12, by a pin 33.

The end piece 32 receives in its center a flexible cable 34 similar to that used to connect the gearbox of an automobile to its speedometer.

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1 Le couple d'entraînement de rotation de la roue 6 et de la vis à pas croisés 12 étant relativement faible l'emploi du câble souple 34 suffit et assure une vitesse angulaire de chacun des embouts 32 identique.

1 The rotation driving torque of the wheel 6 and of the cross-pitch screw 12 being relatively low the use of the flexible cable 34 is sufficient and ensures an angular speed of each of the end pieces 32 identical.

This third solution is simple to carry out and not expensive. Its use presents transport hazards, the flexible cable 34 must be long enough and have a fairly substantial connection curvature between the axes concerned.

Hence the size of the flexible cable 34 outside of the entire reel, which is detrimental to its use and its transport.

4) Fourth solution: The third solution is the simplest and the least expensive to manufacture despite its drawback of use.

Because of the flexible cable 34 which is troublesome during the transport of the entire reel.

We have the possibility of using the flexible cable 34 in a removable way which will be assembled only when we use the reel.

It is therefore necessary to provide for a partial automatic immobilization on the one hand of the connecting axis 5, integral with the coil 1 by the support 4 and on the other hand of the cross-pitch screw 12.

Indeed, the rotation of the connecting axis 5 and of the crossed threaded screw 12 being combined with the mounting of the reel to allow the winding of the wire 16 on the reel 1 in a correct manner to avoid any overlapping of the wire 16 on coil 1.

To automatically immobilize the connecting pin 5 and the crossed thread screw 12 we will use a locking system described in FIG 21-22.

The immobilization system consists of an inner box 35 in the center of which passes an axis 36.

On this axis 36 slides a wheel 37 which has a headless Allen screw 38 which, by its tightening, makes the wheel 37 and the axle 36 integral.

On the axis 36 also slides a pinion 39 which is placed opposite the wheel 37. This wheel 37 has on its face in contact with the pinion 39 a pin 40 hard fitted; which slides in the hole 41 machined on the pinion 39.

In this assembly, the wheel 37 and the pinion 39 are coupled in rotation. Between the wheel 37 and the pinion 39 are two springs 42 which force these two elements to move apart.

An internal pinion sector 43 is fixed by a screw to the internal case 35. The system is designed according to FIG 21 and FIG 22 so that the pinion 39 slides on the axis 36 to come with the assistance of the two springs 42 s' engage perfectly with the external pinion sector 39.

An outer casing 44 fixed by the screw to the inner casing 35 complements the immobilization system.

A hole 45 placed during machining on the inner housing 35 is provided for adjusting and tightening the wheel 37 on the axle 36.

The system is simple, just push the pinion 39 which slides on the pin 36 to free it from the internal pinion sector 43 and thereby make the rotation of the wheel 37, pinion 39 and pin 36 free.

The end piece 32 of the flexible cable 34 has on its outside face a pin 46 FIG 24-23 which fits into a hole 47 machined on the outside face of the pinion 39.

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To maintain the tip 32 on the axis 36 after having overcome the pressure of the springs 42 we have the possibility of putting a pin 46, or a ball and spring system commonly used in the tools of the wrench.

The immobilization system is fixed on the one hand to the bearing 9 and the axis 36 in description is replaced by the crossed threaded screw 12.

The second immobilization system is fixed on the bearing 2 and the axis 36 in description is replaced by the connecting axis 5.

It should be noted that during the unwinding on the wire 16 of the coil 1 there occurs with the weight of the wire 16 wound a fairly high inertia.

To overcome this inertia, it is necessary to provide for the braking of the coil 1.

First solution The description relates to FIGS 26-27 on the base 7 is welded a plate 49 in which passes a screw 50 of suitable shape with a knurled head and which receives at its end a plastic tip 51. This plastic tip 51 comes into contact with the outside face of the coil 1. The pressure is adjusted by the screw 50. After adjustment a lock nut 52 comes to immobilize the screw 50 on the plate 49.

Second solution The description relates to FIGS 28-29.

On the base 7 is welded a support 53 in which a bore is machined to receive an eccentric pin 54. The latter, at one end a hexagon 59 and at the other end an eccentric diameter 60 which fits in a shoe of braking 56. The eccentric pin 54 and shoe 56 assembly are held by a circlip 55.

lThe braking process is as follows thanks to the eccentric pin 54 the shoe 56 makes contact with its braking part 61 on the inner edge 58 of the coil 1. The braking adjustment is achieved by the rotation of the eccentric pin 54 with the hexagon 59. A clamping screw 57 immobilized when the braking assembly is clamped.

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Claims (10)

1) Device for winding a wire 16 on a spool 1 fixed on the axis 5, in a correct manner to avoid any overlapping of the wire 16, by using a cross-threaded screw 12 which prints a lateral movement back and forth in front of the coil 1, by virtue of a slide 14 having a finger 13 which ensures its lateral displacement similar to a screw and a nut, characterized in that it comprises means of connection at identical angular speed between the axis 5 of the coil 1 and the axis 12 of the device back and forth and in that the slide 14 is guided by a rocker 21 composed of two flat bearings 22 connected by two central guides 23.  2) Device according to claim 1 characterized in that the slide 14 is fixed on a guide 15 which receives the wire 16, the latter being held with the roller 17 3) Device according to claim 1 or 2 characterized in that it comprises a support 18 placed in front of the finger 13 with a rubber washer 19 and a steel washer 20 to ensure the cleaning of the wire 16 and to exercise a slight tensin braking of this wire 16 during its winding.  4) Device according to any one of the preceding claims, characterized by the connection between the axis 5 of the coil 1 and the cross-threaded screw 12 is adjustable thanks to the two bearings 9 fixed to the plate 8 by the screws 10.  5) Device according to claim 4 characterized in that the mechanical rotation between the connecting axis 5 and the screw with crossed threads 12 is produced by sprockets with identical chains 27 and a chain 26 connecting them.  6) Device according to claim 4 characterized in that the mechanical rotation between the axis 5 and the screw with crossed threads 12 is produced by two identical pulleys 29 each having grooves on their periphery 31 in which the notches 30 are fitted with a toothed belt 28. 7) Device according to claim 4 characterized in that the mechanical relationship between the connecting axis 5 and the crossed thread screw 12 is achieved by two end pieces 32 each welded on a flexible cable 34 similar to that used to connect the box to speed of an automobile at its speedometer / these two end pieces 32 being fixed on the connecting axis 5 and the cross-threaded screw 12 by a pin 33. <Desc / Clms Page number 8> 8) Device according to claim 7 characterized in that the two ends 32 are removable, two automatic immobilization systems avoiding that when the cable 34 is removed the two axes 5 and 12 connected by the latter are angularly dissociated from their initial assembly, these two automatic immobilization systems have an axis 36 on which there is a wheel 37 fixed by a screw 38, the wheel 37 drives a pinion 39 by a pin 40, the wheel 37 and the pinion 39 move apart under the action of two springs 42 which force the pinion 39 to come into engagement in the internal pinion segment 43, which is fixed by a screw on the internal case 35, itself fixed on the base 7, each end piece 32 has on its external face a pin 46 which comes into a hole 47 of the pinion 39 to make them integral, when one presses on a nozzle 32 to overcome the pressure of the two springs 42, the pinion 39 being released from the inner pinion segment 43 the assembly pinion 39 and wheel 37 become free to rotate. 9) Device according to any one of the preceding claims, characterized in that the braking of the coil 1 takes place with the mounting of a plate 49 which supports a screw 50 provided with a plastic tip 51 which rubs on a outside face of the coil 1, a lock nut 52 immobilizes the screw 50 after adjusting the desired pressure. 10) Device according to claim 8 characterized in that it comprises a shoe 56 with an eccentric pin 54 which comes into contact with its braking part 61 on the inner edge of the coil 1. The adjustment of the contacting of the shoe 56 being produced using a hexagon 59, a screw 57 immobilizing the eccentric axis 54 after adjustment.