NO147983B - WINDING WINDOW FOR TRAAD. - Google Patents

Description

The invention relates to a winding device for wire, in particular for drawn automatically welded wire with more than two co-axially arranged wire spools on a drive shaft which are operated one after the other by a back and forth as well as from spool to spool movable thread guiding device.

Devices for winding thread on spools are previously known in many different embodiments. Thus shows e.g. French patent no. 1 200 340 a device for combining

early winding of small wire rings, whereby a number of coils arranged next to each other are arranged on a coil axis, but where, however, each of the coils is operated by a separate strand of wire. When the desired thread

length is wound up, operation is stopped, the threads are cut off and the other bobbin axis brought into bobbin position by turning a carousel disc. The winding process is then started again while the full coil or full coils can be taken off the stationary coil axis.

In US patent no. 2 460 723, a device is described in which a row of coils arranged next to each other on a coil axis, open on one side, i.e. only equipped with a coil wall, is wound one after another with a fishing line and it is also arranged a measuring device with. with the help of which the coil transfer is triggered.

A complicated two-coil winding system is described

in British patent no. 850 122. Each coil is assigned a clutch and brake so that a free-

run for the wound coil. In this phase, the empty coil is turned, the winding coil. is slowed down and at a predetermined speed the transition to the empty coil is carried out.

DE-OS 21 47 574 describes a two-spindle head

which is suitable for coil winding machines and which has a head plate to be able to bring a respective one of the two spindles into engagement with the drive mechanism when turned.

DE-AS 12 62 449 shows a winding machine for electric coils in wire rings respectively, which are to be wound up between so-called winding chambers. The objective thereby only remains

thereby setting up a winding machine cooperating with a counting device

for automatic switch-off, as the coil transition is made when the drive shaft is stationary.

Moreover, the use is known from DE-OS 22 57 944

of an automatic device for continuously winding a thread on several spools, which are located next to each other on a spindle serving as a drive device, whereby the thread guide is brought to make an alternating displacement movement parallel to the spindle axis. Thereby, two couplings driven in opposite directions are used, a spindle holder with two drive spindles arranged one above the other, an electronic control device and a tabulator for thread guidance. The counter is not set to measure length, but to the number of wire windings of a spool, and to ensure correct wire guidance at all times, the control device must be programmed so that the drive speed of the spindle during the passing phase of the wire is practically reduced to zero during passing

the phase for the wire from one coil to the next coil.

A winding device is also known which

last station with wire drawing system where the continuously drawn wire from the last drawing drum runs directly into the winding device. As wire spools, small spools are arranged here, such as sales spools, which can only take up a small amount of the drawn material, but which have the advantage compared to large machine spools, which take up between 300 and 1000 kg, that you save on your own rewinding process from machine reel to sales reel. At high processing speeds or at small take-up quantities for a thread or sales reel, this becomes full within a few ■

minutes and, in the case of a coil device of the known type with only two coaxially arranged wire coils, must be immediately replaced with an empty coil. This disadvantage also occurs when the thread is rewound from the machine bobbin to the sales bobbin. It is therefore necessary when rewinding to smaller coils, such as sales coils, to use an extra person. This can, in principle, operate several bobbin machines, but a multi-machine operation requires very fast work, as storage options

the heat for the last drawing drum is only limited and it may happen that two or more spools become full at the same time.

The invention aims to avoid these disadvantages

and difficulties and the basis of the invention is the task of providing a winding device of the initially mentioned type for winding thread, in particular for direct winding of sales bobbins, where the operation can be carried out in a simple and rational way and in particular that the operation must only be carried out after a greater more time than is necessary when winding a single thread - or a sales coil -:

This task was solved according to the invention, by

that at least two shafts are arranged in a manner known per se, which serve to take up several spools of thread, whereby each shaft is movable from a rest position to a spool position and vice versa, and the spool position can be connected by means of a coupling to a drive device and that it parallel to the bobbin position, the shaft moved to the bobbin position, the thread guiding device arranged in a manner known per se has a measuring device for the amount of thread that has been wound up on each thread spool, which measuring device has two of the thread to be wound up driven, on different amounts of thread pre-settable meter counter, whereby a of the meter counters are arranged for a short-term reduction of the speed of the shaft drive device during the transfer phase to the next thread spool,

and the second meter counter is arranged for controlling the setting motor for stepless advancement of the wire guiding device.

A particular advantage arises if the winding device according to the invention is used for direct winding of thread coming out of thread production, since operation can be taken over by the thread puller and no additional operating personnel are required.

When a value that can be set in advance for the amount of thread is reached, the speed of the shaft in the coil position can be reduced automatically, after which the setting motor likewise automatically provides a forward step for the guide device, after which the speed of the shaft is again increased to the original speed. The purpose of this is to prevent a loop or closure of the wire transported at high speed to the winding device at the transition over the coil wall during feeding

of the guide device from an already full to an empty thread spool. The size of the speed reduction for the shaft is primarily dependent on the wire material, wire diameter and the wire drawing speed.

According to a further feature, for the safe transfer of the thread from one spool to the next, between the spools of thread pushed onto the shafts, plate washers with per se familiar take-up noses are arranged.

To limit the step advancement of the guide device, the guide device advantageously has a proximity switch which stops the stepwise advancement of the guide device when guided past one of the disc discs.

A preferred embodiment of the winding device according to the invention is characterized by the fact that the shafts which receive the coils in a manner known per se are arranged eccentrically with one end rotatable on a disc rotatable about a horizontal axis and with its other end freely projecting, and that the projecting end of the shaft arranged in coil position can be supported by means of a pinol that can be brought into and out of engagement with this freely projecting end of the shaft.

In the following, the invention will be explained in more detail with the help of an exemplary embodiment which is shown schematically in the drawing, which shows: fig. 1 a plan view of the winding device,

fig. 2 a side view with a pulling station arranged in front of the winding device,

fig. 3 a detail of fig. 1 on an enlarged scale, and

fig. 4 a disc arranged between the coils, likewise on a larger scale.

On a vertical column 1 in a machine stand 2, a vertically arranged disk 3 is rotatably supported about a horizontal axis 4, whereby a motor 4 is used for rotation. At right angles to the plane of the disk 3, i.e. parallel to the horizontal axis 4 of the disk, there is the disk is rotatably supported by two mutually diametrically opposite each other lying, at a distance 6 from the axis of the disk 4 arranged shafts 7,8. These shafts serve to take up thread spools 9 which are made of plastic. The wire spools are arranged to be rotatable, but axially displaceable

on each of the shafts 7, 8. The ends 10 of the two shafts 7, 8 protrude freely.

Opposite the column 1 which carries the disc 3, there is also arranged on the machine stand 2 a column 12 which carries an axially displaceable quill 11. The quill 11 can be brought into engagement with the respective freely projecting end 10 of one of the shafts 7, 8 by means of the compressed air drive 13 This one axle, as in fig. 1 is denoted by 7, can be connected with its other end 14 by means of a coupling 15 to a shaft rotation drive 16, i.e. to a pulley 18 driven by an electric motor 17. When turning the disk 3, one shaft 7 can once is connected to the shaft rotation drive 16 and once to the other shaft 8. The shaft 7 connected to the shaft rotation drive 16 is in the coil position, while the other shaft 8 is in the rest position. Roughly parallel to the spooled shaft 7, there is a spindle 20 rotatable by a setting motor 19, which is used to guide the thread 22 by stepwise displacement of a guide device, which is denoted by 21. The guide device comprises a primary slide 23 , which is stored on guides 24. On the primary slide 23, there is also arranged a pull nut 25 which passes through the spindle. On the primary slide 23, additional guides 26 for a secondary slide 27 are arranged, which extend parallel to the guides 24 of the primary slide 23. The secondary slide 27 has projecting arms 28, which carry a thread guide wheel and two roller-shaped thread guide fingers 20, between which the thread 22 which is to be coiled will come to lie. The wire guide fingers 30 lie immediately in front of the coils 9 of the shaft 7 turned to the coil position. The secondary slide 27 which is brought into oscillating motion by means of a hydraulic cylinder 31, whereby the stroke of the oscillating movement roughly corresponds to the length 32 of a wire coil 9. The wire guide roller 29 drives over a rein- drive 33 two meter counters 34, 35, of which one 34 is connected to a speed control device (not shown) for the shaft rotation drive 16 and the other 35 is connected to the setting motor 19 for advancing the guide device 21 over electric contactors, whereby the contactors upon the achievement of on the meter counters on preset values take effect. On the primary slide 23, an extending, projecting arm 36 is attached close to the thread spool 9 to the shaft 7 rotated in the spool position, on the end of which a metal-responsive proximity switch 37 is mounted.

As can be seen from fig. 2, the winding device is directly subordinated to the last pulling station 38 in the manufacturing plant. After the last drawing stone 39, the thread 22 is fed over a drawing drum 40 to a non-driven supply drum 41, which can be braked by means of a ground brake 52. From the supply drum 41, the thread 22 runs over the thread guide roller 29 and the thread guide fingers 30 to the shaft 7 turned to the spool position.

The way the device works is as follows:

First, the beginning of the thread is attached to the first, i.e. immediately to the thread spool 9 arranged next to the disc 3, on the shaft 7 turned to the spool position. Then the pulling process and the winding of the thread and the pulling speed and thereby also the winding speed (speed of the shaft 7) begin increased to the maximum achievable value. Simultaneously with the rotation of the shaft 7, the oscillating movement of the secondary slide 27 along the guides 26 also begins, whereby the thread 22 is wound up approximately evenly distributed over the length 32 of the thread spool 9. The connection of the meter counters 34, 35 with the speed control device for the shaft rotation drive 16, respectively with the setting motor 19 for step-by-step advancement of the guide device 21 from the thread spool 9 to the thread spool 9 is implemented in such a way that upon the achievement of a preset value for the first meter counter 34, which value is approx. 2% less than the amount of thread to be wound per thread spool, the speed of the shaft will automatically be reduced and upon reaching a pre-set value on the second meter counter 35, which value is selected in accordance with the amount of thread to be wound per amount of thread, the setting motor 19 for the guide device 21 will automatically be caused to perform a feed step. This advance step is terminated by means of the proximity switch 37 at the time when the proximity switch 37 has moved forward to a disk 43 arranged between two adjacent wire spools 9.

During this advance step, the wire 22 lays over the edges of the disks 45 which limit the wire coils and is caught by one of the catch noses 46 which is arranged on each plate disk 43 and which projects radially over the edges 44 of the wire coil disks 45 and prevents a slip through. In connection with this switching step, the counters for the meter counters 34, 35 are automatically reset to zero, and the rpm for the axle 7 is automatically increased again to the maximum achievable.

The reduction of the winding speed when carrying out the advance of the guide device 21 is necessary during fast winding in order to avoid a loop formation at the transition of the thread over the edges 44 of the thread spool discs 45 with a change in diameter, from the large diameter of the full spool to the small diameter of the empty spool . In addition to this, the supply drum 41 is braked during the speed reduction for the axle 7 by means of the ground brake 42 in order to keep the thread 22 under tension.

During this advance step for the guide device 21, the pulling process proceeds with undiminished speed. The thread is consequently stored on the supply drum 41." The contact finger 47, which senses the amount of thread stored on the supply drum on the basis of the height 48 of the turns of wire wound on the supply drum 41, controls the maximum winding speed.

After the last of the spools of thread 9 on the shaft 7 turned to spool position has been filled, the winding device is stopped, the thread 22 is clamped off and the disk 3 turned 180° after retracting the quill 11 and releasing the coupling 15, so that in the meantime with empty spools of thread 9 equipped shaft 8 enters the coil position. The wire is pushed back by the guide device 21 into the starting position (near the disc 3), again attached to the first wire spool 9, the spindle 11 is brought into engagement with the shaft 8 and the coupling 15 pressed in. During this process, the drawing process continues at an unreduced speed, as the thread is taken up by the supply drum 41. Then, the filled spools of thread that are on the shaft 7, now brought to rest, after the thread has been squeezed between the spools, are taken off and empty spools of thread are pushed onto the shaft under interlayer of disc discs 43.

The invention is not limited to the embodiment shown in the drawing, but can be modified in various ways. Thus, e.g. more than two shafts are used, and the shafts can be arranged on pivot arms instead of on the disc 3. In addition, the shafts can be rotated about a vertical axis. Likewise, the quill 11 on the freely projecting end of the shaft brought into coil position is not absolutely necessary. It can be omitted for particularly small spools of thread 9.

When using the winding device according to the invention directly in connection with the thread manufacturing plant, the rewinding of a large machine spool into small sales spools is omitted, whereby significant production costs are saved. The operation of the winding device according to the invention can be carried out by the wire puller, who on wire drawing installations primarily only has to carry out monitoring work. His work on the winding device according to the invention essentially includes putting on empty spools, removing and possibly wrapping full spools and placing them on a pallet. The time intervals,

in which these works must be carried out depends primarily (in addition to the pulling speed) on the number of coils 9 arranged on the shafts 7, 8, i.e. on the length of the shafts 7, 8. For coiling automatic welding wire, in practice it has

proved advantageous to carry out the length of the shafts so that each shaft can take approx. 8-12 spools of solder wire.

The advantages of the winding device according to the invention lie particularly, as described, in the direct winding at the thread manufacturing plant. However, the rewinding device can also be used for rewinding, as there are also advantages, especially due to the longer operating cycle time, especially in the case of multi-machine operation.

Claims (4)

1. Winding device for wire, in particular for drawn automatic welding wire, with more than two wire spools arranged equiaxed on a drive shaft, which are operated one after the other by a back and forth and from spool to spool movable wire guide device, characterized in that on and in a manner known per se, at least two shafts (7, 8) are arranged which serve to receive several spools of thread (9), whereby each shaft (7, 8) is movable from a rest position to a spool position and vice versa, and in spool position by means of a coupling (15) can be connected to a drive device (16) and that the thread guide device (21) arranged parallel to the shaft (7) moved in the coil position has a measuring device (34, 35) for the amount of thread that is wound up on each thread spool, which measuring device (34, 35) has two meter counters driven by the thread to be wound up, pre-settable for different amounts of thread, whereby one of the meter counters (34) is arranged for a short-term reduction of t the clock for the shaft drive device (16) during the transfer phase to the next wire spool (9) and the second meter counter (35) is arranged to control the setting motor (19) for stepwise advancement of the wire guiding device (21). 2. Device according to claim 1, characterized in that between the wire coils (9) pushed onto the shafts (7, 8) there are plate washers (43) with per se familiar catch noses (46). 3. Device according to claim 2, characterized in that the guide device (21) has a proximity switch (37), which, when guided past one of the disk discs (43), stops the step-by-step advancement of the guide device (21). 4. Device according to claims 1-3, characterized in that the shafts (7, 8) which accommodate the coils in a manner known per se are arranged eccentrically with one end (14) rotatable on a disc rotatable about a horizontal axis (4) (3) and with its other end (10) is freely projecting, and that the freely projecting end (10) of the shaft (7) placed in the spool position can be supported by means of a freely projecting end (10) on the shaft ( 7) pinole (11) which can be brought into and out of engagement.