DE4002307A1 - Tensioner for binding wire in steel rolling mills - has roller fixed on pretension lever and ensuring taut wire - Google Patents

Abstract

The tensioner for binding wire comprises a roller (4) mounted rotatable on a swivel lever (1) which is pretensioned by a compressionm spring (7) and spring plate (6) and which is supported on the guide (2) of the wire binding machine. A deflector partially embracing the roller in the running area of the wire can be mounted rigidly on the guide (2).

Description

The invention relates to a tensioning device for binding wire, those on wire binding machines, for binding sharp-edged Formed steel packages are used to tighten the binding wire is used. Such wire binding machines come in Rolling mills for use.

When strapping sharp-edged packages made of shaped steel with binding wire using the usual wire binding machines it is, especially with wires with large cross sections, impossible by pulling the wire one-sided sufficiently tight and thus to achieve a firm bond. Even if the wire ends are pulled tight on both sides, it can required tightness can not be guaranteed.

Solutions have been created to avoid this deficiency have been where the detour consists of several separately operable segments, each one after the other Release wire. Furthermore, it is known within the Arranging to arrange additional roles over which the wire is stretched and the wire after a partial Wrapping of the package was created by hydraulic triggered pivoting to complete the binding release. Through the use of hydraulic actuation and controls such binding machines are very expensive and the required swiveling times increase the time required within the technological flow.

It is the aim of the invention, the equipment cost for Lower binding machines and the time required for binding sharp-edged packages made of shaped steel reduce. A tight, tight-fitting tie is supposed to ensure safe handling of the bound packages.

It is the object of the invention to provide a tensioning device for To create binding wire on wire binding machines, which also with Tie sharp-edged packages of shaped steel to everyone Sides of the stack a tight and therefore tight Binding guaranteed.  

According to the invention the object is achieved in that a Roll rotatable within the bypass of the Wire binding machine is stored so that the wire after exiting from the leadership initially rests on this role. It is the roller is mounted on a lever, which by means of a preloaded spring and a spring plate with a defined force is held until the tractive force that by reversing to the one running over the roll Binding wire acts so large that it is used to swivel the Lever and thus to slip the binding wire off the roll leads. By a role in the binding wire area partially encircling deflector that is rigid at the bypass is arranged, the wire slips prematurely prevented from the roll.

It shows

Fig. 1 wire binding machine with clamping means,

Fig. 2 section through the clamping device.

The tensioning device consists of the lever 1 , which is pivotally mounted on the upper part of the fixed bypass 2 , the roller 4, which is mounted on roller bearings 3 , and the compression spring 7, which can be regulated in its pretension by means of screw 5 via spring plate 6 . The fixed bypass 2 and the displaceable bypass 8 are fastened to the binding head 9 in a known manner. From the channel 10 of the guide 11 , which is closed by the plate 14 attached to the movable upper bypass 13 when the binding wire 12 is guided around, the binding wire 12 is pulled out by claws 16 before the driver 15 is reversed. It is then tightened when reversing both the binding material 17 and the roller 4 . A deflector 18, which partially encompasses the roller 4, prevents the binding wire 12 from sliding past the roller 4 . With a sufficiently large tensile force, which can be regulated by the adjustable bias of the compression spring 7 , the lever 1 pivots and thus also the roller 4 reaches an inclined position, so that the binding wire 12 slips off the roller 4 laterally and completely by the driver 15 Bingegut 17 is drawn.

After the binding wire 12 has slipped off, the lever 1 snaps back into its starting position against the stop 19 by the prestressed compression spring 7 .

List of the reference numerals used

1 - lever
2 - bypass
3 - rolling bearings
4 - roll
5 - screw
6 - spring plate
7 - compression spring
8 - sliding bypass
9 - binding head
10 - channel
11 - leadership
12 - binding wire
13 - flexible bypass
14 - plate
15 - driver
16 - claw
17 - Bindings
18 - deflector
19 - stop

Claims (2)

1. Tensioning device for binding wire on a wire binding machine for tightening the binding wire around stacks of sharp-edged shaped steels, the binding wire being guided in a guide within the bypass of the wire binding machine, characterized in that a roller ( 4 ) is rotatable on a by means of a compression spring ( 7 ) and spring plate ( 6 ) preloaded pivotable lever ( 1 ), which is supported on the bypass ( 2 ) of the wire binding machine, is mounted. 2. Clamping device according to claim 1, characterized in that a roller ( 4 ) in the binding wire running area partially embracing deflector ( 18 ) is rigidly arranged on the bypass ( 2 ).