Device for unwinding wire from a reel

or behind the spool, depending on the process by lifting the hose and whether the wire is wound on the spool or flexing the strap by removing the static friction from the spool. The axes of these coils can be horizontal or vertical.

To the largest sag regulate the static friction on the traction sheave and thus cause a bumpless removal of the wire from the spool.

If the device without resilient bracket, only with the variable deflection of the wire-carrying hose, work, the force would

the traction sheave is regulated. Promotes the traction sheave with fixed wrapping of the wire to be more stored. Wire is consumed at the sampling point,

However, such devices are still prone to failure, 15 so can the stiction on the traction sheave, especially if by large coils of wire and it forms again a wire reserve is to be removed in the often durchfte partly short-term. Incoming hose. The deflection of the spring sequence of the large inertia of the bobbin is the strap and the movement of the tube until the wire removal intermittently, because the coil can not be brought so quickly to the appropriate peripheral speed at the beginning of removal or during a variable removal. These jerky shocks transmitted to the donor site can lead to disorders such. B. On a connected welding machine, the tapping point on the wire only after consumption, which often interrupt their wire removal or the wire supply in the hose sag completely change the. tighten loose wire windings of the traction sheave.

As a result of the inertia of the coil is a counter force see the traction sheave and the removal point in the wire between the traction sheave and removal point to create wire reserves that supply wire so long, 30 arise, the intermittent toward extraction point to the coil by the tensile force of the traction sheave on.

the full circumferential speed of the required dignity on the resilient yoke and the movement

Wire removal was brought. This wire reserve of the sagging hose can be dispensed with at the beginning of the wire removal and also while a rigid tube acting as a conductor of the wire can be effective in removing the wire. This wire would need, so the counter forces for the reserves would cause a bumpless wire removal, wire removal so large that a uniform Entwas would be impossible especially in a discontinuous operation of the wire, is advantageous. The invention ensures that the currency

According to the invention, between the traction sheave of the wire take-off is variable slack and a tensile force exerted on the wire 40 of the hose, and the variable deflection creates a wire strap secure in the direction of movement of the wire which restricts the stirrups of the yokes elasticity of wire turns over the traction sheave seen in In its sagging variable tube state of rest through loosening up and connected with the consumer. during the highest withdrawal by firm

The wire runs from the spool in several windings, the most effective of which is to fertilize the wire windings, which can be regulated by a motor. In this way, depending on the wire driven traction sheave through the hose to the sampling point where it is moved by pulling, for example, by feed rollers of the consumer. As soon as the traction force from the consumer's engine is applied to the wire, the hose and the hose are forced into the wire

Tensioned strap, whereby the bracket bends in the direction of the traction sheave. The wire reserve between traction sheave and consumer becomes free. During use of the wire supply, the bracket regulates the static friction of the wire turns on the traction sheave. The greater the deflection of the bracket, the greater is the static friction, because the power of the engine is fully used by the consumer

allows the consumer to regulate the friction effect on the traction sheave and wire removal without jerky load possible.

The device according to the invention for the bumpless, variable wire removal on known devices of the wire removal of large coils is shown in FIGS. 1 and 2 in a schematic side view.

F i g. Figure 1 shows the unloading device in the state of rest, without static friction of the wire turns on the traction sheave;

F i g. 2 shows the removal device in the state of the strongest wire removal, the highest adhesion

come. Once the load of the consumer to 60 bung on the traction sheave; the hose is stretched, the wire acts, the loose turns of the brackets begin to lay in the direction of the traction sheave spring of the wire on the traction sheave on the surface of the same. As a result of stiction

A tensile force is exerted on the wire of the coil.

flexed.

At the foot of a buck 4, a resilient bracket 8 is fixed, which with a consumer through

exercise and set this in motion. In the meantime, 65 is connected to an elastic hose 9, the coil of which, due to the traction force of the traction sheave, is greater in length than the distance between the sheathing.

the same circumferential speed arrives as the traction sheave. The traction sheave is set up so that

gel 8 and the place of the consumer. With the place of the consumer, the hose 9 is firmly connected.

The resilient bracket 8 and the variable in sag hose 9 are located behind a traction sheave 6 and a wire spool 1 known Abspulgeräte in which the traction sheave 6 is driven by a motor.

The tube 9 changes its sag depending on the deflection of the bracket 8. In the largest deflection of the bracket 8 in the direction of the traction sheave, the hose 9 is in the horizontal position, this is the state of highest voltage.

The state of rest prevails with complete slack and unstrained hoop 8, such as F i g. 1 shows.

The state of highest stress prevails at horizontally stretched hose 9 and the most strongly bent in the direction of the traction sheave 6 8, as Fig.l shows.

Between the state forms shown in FIGS. 1 and 2 are all states of wire stress. The wire reserves are in the state of rest, Fig. 1, the largest and in the state of highest wire consumption, Fig. 2, the smallest. Slack of the hose 9 and deflection of the bracket 8 regulate the static friction of the wire windings on the traction sheave 6 during wire removal.

These self-regulating wire reserves in the picker determine the stiction on the pulley 6 and provide even bumpless wire removal, both from the state of rest and at variable picking rates.