JPS5966921A - Winding machine for thin bar steel material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thin steel bar winding machine for making rings from bar-shaped rolled products that are at rolling temperature or pre-cooled in a winding facility of a rolling mill. .

According to East German patent no.
Sliding guide (entrance member) in the area of the tension flange)
Winding machines are known which are accessed via guide pipes or installation pipes having a winding system. The capture position of the guide tube is ideally the lowest end position; however, certain limits are also used for the upper deflection position of the guide tube. The winding path is brought to the rolling product feed, which has a braking device or a loop control device, in which case the armature current of the winding drive is reliably regulated (limited) or Is the rotation speed adjusted? The guide pipe (laying pipe) is equipped with a swiveling drive and can be swiveled horizontally (East German patent no.

0 winding in which the winding arm, which is arranged perpendicularly to the winding bottom, is either hydraulically tensioned via a disk stroke device or foldably equipped with an eccentric bearing. The rolled product ring is pushed away from the take-up disk.

The disadvantages of the solutions implemented in the prior art are as follows.

The supply pipe (laying pipe) with the sliding mechanism or inlet member is located below. This is because this tube has to exert a resistance moment against the plastic bending moments in the winding machine, which leads to high sliding wear and thus damage to the material surface in the rolled product.

The laying pipes disclosed in East German Patent No. 1 #, 01,7 which warp horizontally under loads due to bending of rolled products merely enlarge the wear area of the sliding guide towards the pivot point. be.

East German patent No. G5! The capture pins by the sqo and tyobt have no effect. This is because the tip portion of the rolled product is thereby not reliably captured when the rolled product enters the winding gauge.

The capture pin according to East German patent no.
The winding diameter for each turn is larger than the resulting ring outer diameter, which must be essentially smaller than this inner diameter due to the ring reduction of the turns in the cooling jacket H. East German Patent No. 710
Capture of the end of the steel bar inside the capture end by means of a t& is impracticable in practice. It is therefore necessary to tolerate the winding of the last roll of rolled product in the cooling jacket before the winding machine comes to rest. By this, other.

This results in an essentially more enlarged winding relative to the achieved ring outer diameter. Enlarged first and last turns have an inherently faster cooling compared to a narrower ring, and this may result in too high a tensile strength for some steel properties. This results in too much strength and too little aperture. This difference in quality over the length of the rolled rolled product is particularly disadvantageous for the subsequent forming process. Moreover, the enlarged first and last turns impede the subsequent transport and delivery processes. The captured position of the laying pipe is also meant to be the deepest achievable position, so by the assembly of the winding tool,
The winding that is being screwed upwards results in a rolled vagina, and subsequently the ring, with its lower catching end l, thus arises for the first time essentially above the level of the catching end. this is,
This results in a lower winding hollow space. The bearing surface of the ring of thin steel bar is therefore characterized by a loose outer and some slight inward first turns, which, in addition to the defective ring shape, results in a high loading Damage to the material during transportation due to pressure also occurs.

The laying pipe runs with each stroke towards the boundary of the fixed end position, so that during winding under tension the winding disc and the upper guide disc (flange) of the rolled product are ) is not achieved, however, due to the over-winding of the ring boundaries at the top and bottom ζ of the ring formed, individual, however, due to the change in the winding diameter, a tension-free winding occurs, which are arranged eccentrically and, in extreme cases, the winding order is disturbed or pulled at the winding space boundary.

The basic implementation of the winding disc only allows the finished ring to be pushed away from the lifted disc, which means a restriction on the amount of rings.

The object of the invention is to improve the quality of the rings by a careful feeding of the rolled product, no obstruction at the beginning of the rolled product, G) capture, orderly winding and the performance capacity of the equipment for large ring quantities. The aim is to improve

Disclosure of the nature of the invention The object of the present invention is to provide the components of a winding machine.

The purpose of the present invention is to form the product in such a way that slow starting speeds and larger end wraps are avoided in the wound ring, and at the same time it is ensured that the rolled product is fed gently into the run-in part. .

According to the invention, this problem is achieved in that the outer radial boundary of the capture space opposite to the first winding I protrudes through an opening in the winding disc in the form of a circular arc. It consists of a fixed catch or a catch element arranged at the border of the arcuate and central travel part of the winding disc, with a long, radial extension outward of the end winding. The limitation is solved by allowing the pressure to be formed directly on the trapping space to be formed from the mounting.

The capture element forms a segmentally interrupted cylindrical surface, between each two arcs there is a rod required for the function of the winding disk.

Another feature of the invention is that the catching element arranged at the boundary of the winding disk, which consists of a stroke part and two opposing arcuate forces 1, is of planar shape, polygonal or star-shaped. It has a capture contour and is expanded downward into a conical shape.

For the placement of the end turns in the finished ring, a pressing device is provided, which device is arranged in the housing or in one head member. Or, a large number of cylindrical presses are established from roll force),
These rolls can be moved, on the one hand, via pivot levers fixed to the cooling jacket, or on the other hand,
Via an axially movable displacement slide, it is possible to suppress the winding of the end section. The pressing of these sliders parallel to the winding axis ζ outside the winding space corresponds to the roll.

This is because the ends of the rods are capable of running into the length of their winding height at each location of the ring height. In order to dampen the resulting shock, the pressing roll is provided with a spring element that reduces the collision. An actuating cylinder is provided for actuating the pivoting lever or the moving slide.

In order to receive a moment opposite to the bending moment in a winding machine for rolled products, the present invention provides at least a number of blockages inside the pendulum tube on the exit side of the rolled product. The large-sized rolls are arranged in front and behind each other, and the holes are formed from two or three guide rolls, respectively.

For electrically blocking the stroke drive of the winding disk, a pulse generator is provided in the area of the pivoting lever or the moving slide relative to the outlet position. For limiting the swivel range and for establishing the capture position of the pendulum tube, a number of fixed pulse generators are arranged on the positioning device and associated actuating elements are arranged on the pendulum tube. has been done.

It likewise belongs to the invention to arrange an analog or digital transmitter on the pivot axis ζ of the pendulum tube bearing.

Furthermore, the essence of the invention includes the provision of a setpoint integrator for increasing the winding speed during the capture process for the use of a large capture space during bending moments of small rolled products. There is a use of.

Hereinafter, the present invention will be explained in detail based on the accompanying drawings showing two embodiments thereof.

As shown in FIG. 1, it has a rolling temperature.

Alternatively, the rolled product l, precooled to approximately 773° K, reaches from the outlet member of the brake mechanism into the pendulum tube 3 of the positioning device q, which device d controls the working cylinder 5 by appropriate control. and by operation.

The pendulum tube 3 is moved to the capture position indicated by γy-l. In this position, control of the actuating cylinder 5 is electrically fixed by the actuating element 77 via the pulse generator 6. Therefore, the best possible capture position on the winding disk g of the starting part of the rolled product at point 1'-FJ is guaranteed.

a ring-shaped groove bounded by the rotating machine parts, i.e. the winding disc g, the catch member 9 and the winding arm 10;
/ (FIG. 3), the starting end portion of the rolled product is captured.

In this case 5.2 operating principles should be distinguished.

First Principle - Rolled products with a small bending moment and a rolling speed of 10 m/s or more are subject to the effects of gravity and centrifugal force.
Winding disk g and capture member? The tension of the friction-adhesive hinge of the catching tool, which is pressed against and deformed in the catching DF, into the winding 3 at the starting end (Fig. 9), and on top of this winding 3, is overtaking the rolling speed. is powered). Under the influence of tension, the rolled product has a force of 1 and 1 d for winding calculation)
The rolled product is then wound upward, in which case the rolled product runs out almost horizontally.

The rolled product, which has a larger bending moment and a smaller rolling speed than the second principle, has a bending triangle, i.e. the capture member 9
, in the winding arm io and the guide roller /3, in which case a winding tension is created in the rolled product l via the frictional fit due to the contact force on the catching tool. A roll hole mold is located between the guide rolls 13 in the roll box of the pendulum tube 3 (FIG. 9). A driving force within the rolled product 1 assists in the capture process.

Once the winding tension has been established, the rolled product/ is connected to the winding mandrel 10 or the rolled product/ of the previously wound layer;
This is done so that there is a close contact due to friction.

The bending moment in the rolled product / is used up by the winding moment l against the roll holes 12 lying one behind the other in pairs, and a countermoment is created in these holes /2.

The guide rolls /, 7 are advantageous with respect to friction and displacement of the rolled product and also allow the bar to run out at a horizontal folding angle β (FIG. 2). A device for a horizontal displacement pivoting movement of the positioning device can therefore be omitted. For horizontal alignment of the positioning device V.

A pivoting of the adjusting device W,/S around the axis 16 is therefore sufficient to ensure the acquisition process.

After a maximum of 70 windings, the acquisition process ends. That is, the winding tension achieves its full height in response to the limits of the adjusted armature current of the motor of the winding machine, and the winding arm runs synchronously with the rolling product speed.

It was attached to the force (force 1, ara force), but simply by increasing the current, it runs in -various directions. The actuating cylinder 5 is actuated via the rolling product indicator, for example in relation to the hour, and causes an upward movement of the pendulum tube 3 in the direction shown, as shown in FIG. = 0), whereupon the pulse generator /7 is actuated by the actuating element 7, thereby controlling the combination path valve of the hydraulically actuated cylinder j into the blocking position or the reversing position for the realization of the holding time. be done.

A lower and upper ring limit occurs on the winding arm 10, taking into account the holding time and the critical deflection angle "η". This angle "η" is related to the rolled product diameter and the winding diameter,
In addition, for the diameter of the rolled product l ~ 4/IJ g, 3°
and 7.3°. After reversal, the actuating cylinder j moves the pendulum tube 3 below the capture position rF to the downward turning point rU, at which point the pulse generator/
1 is actuated via the actuating element 19, and the combined path valve of the actuating cylinder S is likewise controlled into the closing or reversing position for the realization of a new holding time. In the lower deflection position, the influence of the holding time and the deflection angle η also applies to the limits of the deflection ring. In order to exclude critical overwinding of the ring, the holding time at the end positions γ-0 and γ-rU of the pendulum tube 3 is reduced with the increase of the winding diameter from layer to layer, thereby The winding ring as shown in the figure is generated. The winding tension is determined by the winding moment of the winding machine drive, the friction in the feed section of the rolled product and the drive equipment or adjustment of the finishing roll stand or rolling mill train. Applied against rolling equipment. The minimum winding tension is at position l
is caused by half-velocity centripetal force in the arc of refined steel. This is because the rolled product does not need to slide in the water-cooled jacket θ of the winding machine. This minimum winding tension is strictly adhered to by means of an adjustable winding moment. Once the rolled product end of the ring to be wound has left the finishing frame, the rotational speed setpoint of the brake drive is reduced. , whereby this mechanism causes a braking moment to now occur in the rolled product, which has no counteracting reaction to the winding moment. Once the rolled product end reaches a winch turnout located in front of the winding machine, the winding machine and the brake drive mechanism are braked together by opposing currents. at the same time,
The press placed inside the housing on one side is roll 2.
/ (FIG. 2) is swiveled by an operating cylinder 2'l by an angle α via a swivel lever 3. The pressing roll 21 is therefore in contact with the ring outer diameter DaJ, and during one winding process on the end winding 35, a pressing effect and a rotating closing effect are produced.・Therefore, pressing is a roll, 2/
compensates for the effects of centrifugal force and reversible deformation in the last turn. This technique is based on the diameter Da]l of the end winding 3j
1at is maintained at the size of the ring outer diameter Da, making it possible to avoid slippage in the cooling jacket 20. Compared to the rest of the ring, it can be seen that the 1a end winding has little essential difference in the cooling state.

As soon as the winding disk g has come to rest, the actuating cylinder 2 and the pressing roller swivel to the starting position and the pulse generator 2
5 is actuated by the actuating element 2B, and the sealing of the winding disk g is withdrawn. The finished ring is lifted up by a winding disk g and subsequently transferred to a conveyor l in a known manner. The pressing roll 1 and the guide roll/3 are conduits, 27. Cooling medium is sprayed from Jf force),
The cooling medium flows out into the water container 31 via the coupling 9.30. Pipe joints 32, 33. Via the roller bearings of guide roll/3 are supplied with lubricant.

In the embodiment shown in FIG. The zero winding disc which moves the pendulum tube 37 to the capture position indicated by rF before the arrival of the starting end part of the rolled product is divided into three parts, the stroke part part 2, It is made up of both arched 3.

As shown in FIG. 7, the collision point of the starting end of the rolled product is located slightly near a point F on the winding disk inside the ring-shaped catch space 4tj. The capture space ys is bounded by a capture element J9 assembled on the winding arm /θ of the stroke part u2, the arch 3 and the edge 3g of the winding disc. capture element y
By different configurations of t, the outer diameter to be achieved of the starting end winding can be varied, as shown by the dashed lines in FIGS. 6 and 7.

The acquisition process proceeds in accordance with the working principle stated under Parts 1 and 2 in Example 1, however,
It includes the following transformations:

In order to avoid loose winding in the lower region of the winding cage and to create a good ring device surface, the intervention of a setpoint integrator is considered for controlling the rotational speed of the winding cage. ing. The rolled product l is conveyed tangentially into the catch boundary circle Jf& by the pendulum tube J7. Introducing a moment opposing the bending moment into the rolled product with careful guidance and a high service life
This is achieved by a large number of front and rear roll guides UO having a three roll arrangement. During the entry of the rolled product l, the rotational speed of the first winding cage is such that the catching bottom JtF3. The circumferential speed of is adjusted to match the speed of the rolled product. Therefore, the rolled product is soft, with a small bending moment.

This allows for more reliable entry.

As a result, the rotational speed is now continuously increased by the setpoint value integrator ζ, depending on the diameter of the rolled product and the winding speed. In that case, the trapping space 9s has a trapping edge height of 6 (
7) and is formed by the upper surface and edge 3g of the capture element 3q. When the circumferential speed of the winding arm 10 reaches a rotational speed that corresponds to the speed of the rolled product, a "winding" and rotational speed progression occurs, which results in tightening of the rolled product. The partial ring generated in this way is
During the winding process, it serves as a green disc and thus prevents slippage of the subsequent winding.

In one variation for preventing the formation of hollow spaces,
The catching space IIs is thus limited to the diameter of the catching boundary circle jfl) of the correspondingly formed catching element 39, which is smaller than the projected outer diameter of the rolled product. The starting end of the pendulum tube 3 at an appropriate position during some velocity course of the captured boundary circle 3 t, b
7 into a narrowed capture space V5.

After the starting end of the rolled product has entered and, after winding with only one force, it is under tension due to friction and bending forces, the movement ζ of the pendulum tube 37 results in a layered winding of the rolled product I. The capture element 39 and the upper surface of the boundary 3t act in this case as a boundary disk for the lower ring boundary. As mentioned above, the starting end of the rolled product is below a certain angle γF that is as flat as possible with respect to the horizontal.
5. On the stroke part 2 or sector 3 of the winding disk, place F.
collide with. Since a rise above the boundary 3g of the starting part of the rolled product is to be avoided in any case, the catch element 39 has a certain small slope. This slope does not interfere with ring removal.

For the assistance of entrainment in the circumferential direction l of the boundary 3t of the rolled product, as shown in FIG. It is advantageous to design it graphically. This positive effect lies in the close contact due to a certain shape with the starting end portion of the rolled product. For example, the polygonal shape also allows the capture tool 5 to be made as a simple element in the shape of the wear bar.

Embodiments of the invention ξ further relate to preventing overwinding of the upper ring boundary. For this purpose,
On the pivot lever of the pendulum tube 37, an incremental transmitter S3 is arranged. Due to this transmitter 53#, the pendulum tube 37 is
Digitally, after each angular position of the swivel angle ro it is controlled to be program-related reduced by a certain value. By this means, as shown in FIG. 9, the upper surface of the ring is stepped in the form of a cone, which upon application of one winding tension, winds over a smaller winding diameter. Ensure that slippage is also avoided with the aid of gravity.

Furthermore, the turning angle γ of the pendulum tube 37 is adjusted by the activation of the transmitter 53 when changing the ring amount. By adapting the height of the ring, it is possible to control the automatic bending so that the outer diameter is kept constant. Moreover, the transmitter 53
Via the pendulum tube 37 is advantageously controlled into a capture position r and into a downward deflection position γυ.

The loose end winding pressing device shown in FIG. 6 has the following configuration, which deviates from Example I.

of the stationary cooling jacket IIe of the winding cage (
Pressing rollers q7, which are arranged in pairs and spaced apart from each other in the recesses, press the finished ring firmly in the radial direction. In this case, preferably only the phase of the winding of the end, which is wound without tension, is moved by the movable slide 111 and the pivotable head member tI? The presser bearing is mounted in the actuating cylinder 50.
Rub it so that it is pressed in a straight line. The working cylinder SO is supported in the guide housing S2.

In order to avoid disturbances of the rolled product, it is expedient to adjust the medium pressure depending on the diameter of the rolled product. The pressing of the windings 35 at the end is particularly important in the case of rolled products that are difficult to bend.
Primarily, this is carried out by the deformation process ζ, in which the pressing of the rolled product is evoked by the bending effect at three points on the rolled product at the contact points between the roll gua and the ring taken up once.

For shock damping, adjustable spring elements 5/ are provided in both directions of rotation of the head member 9.

As soon as the winding machine has come to rest with the finished rolled product ring, the pressing device is moved out of the area of the stroke section 12. Corresponding to embodiment 1, the pulse generator is activated. Then, this pulse generator releases the blockage of the position control of the rotation angle of the winding disk 7, so that the stroke portion of the winding disk and the arcuate groove 3 lift the rolled product ring. It is controlled to a position where it can be taken up in close contact with the travel portion q2 based on the shape.

FIG. 10 shows an example in which the special star-shaped catching contour of the catching tool 5v is arranged at the upper boundary 3t of one winding disk to catch a rolled product having a large bending moment. This is shown in the figure.

[Brief explanation of the drawing]

FIG. 1 is a front view of a winding machine according to Embodiment I of the present invention, with the winding space cut away during winding of the first layer, and FIG. 2 omits the rolled product. The first
A cross-sectional view taken along line A-A in the figure, Figure 3 is B-B in Figure 2.
Figure q is a cross-sectional view taken along line 0-a of Figure 1, and Figure 5 is a cross-sectional view of the winding machine according to an embodiment of the present invention, with the winding space and positioning device cut away. FIG. 6 is a plan view showing a part of the pressing device 4 and the positioning device and a part of the winding space for the number plate, and FIG.
FIG. 6 is an enlarged sectional view taken along line D-D in the figure, FIG. 9 is an enlarged sectional view taken along line E-E in FIG. FIG. 70 is a plan view of the arrangement of capture elements according to Example 1; ,7. ．． 77--pendulum tube; 6. Wa, /g:, 2! ;,1
3--Pulse generator; 7. /? ...Operating element; g... Winding disk; 9... Capturing member; /2... Roll hole type; /
J, 4'l17@*Guide roll;, zo--cooling jacket; 2t, it...pressing is roll; 22...housing; 23...swivel lever;, 2y, so...actuating cylinder; 3S... end Winding of part; 3g... Boundary; : I9.
rll... Capture element; l/... Winding of starting end portion; 12
... Stroke part; G3... Arcuate shape; us... Capture space; G
・・Operation slider; 9.・Head member; ・・Spring element.

Claims (1)

Claims: l A capture space having a vertical winding axis and a winding arm and a removable winding disk for forming, lifting and removing rings of steel wire; In a winding machine for steel wire having a pendulum tube in front of the capture space, the outer radial boundary of the capture space (U 5). The winding at the starting end (three-sided, circular bow-shaped,
It consists of a catch member (q) fixed to the winding bottom (ψl), projecting through a recess of the winding disc (g), or of an arcuate shape (11, ) and the capture element (J9) placed at the boundary (3) of the central stroke part (g, 2), and also consists of the end winding (
The outer radial boundary of 3υ directly extends into the capture space (≠
5) A winding machine, characterized in that the pressing arranged above consists of a device. The capture member (9) forms a cylindrical surface interrupted in pieces, and between the 52 arcuate (-) bars necessary for the function of the winding disk <g> are present. The winding machine according to claim 1 0 3 The boundary ( 3g)
2. The winding machine according to claim 1, wherein the four catching elements (5? or y<z) have a catching contour which is polygonal or star-shaped in plan view. Winding machine according to claim 1, 2 or 3, in which the catching element (jq or y<z) is enlarged in a conical shape towards the bottom. The pressing device consists of one or many cylindrical pressing rolls (2/ or g7) arranged in the center of the housing (2/ or head member (9)). The roll can be rotated, on the one hand, via a swiveling lever (coin) fixed to the cooling jacket (co 0) or, on the other hand, via an axially movable displacement slide (3υ
The winding machine according to claim 1, wherein the winding machine is capable of pressing. In the pressing method, the roll (Color 4I7) is arranged parallel to the winding axis, and the length thereof corresponds to the winding height. Removal machine. Winding machine according to claim 1, characterized in that the pressing roll (V7) is provided with a shock-reducing spring element (51). and the moving slider (ur) is connected to the guide housing (ff
, 2) Claim t, 4, which is supported on the center axis
or the winding machine described in Section 7. V. The winding machine according to claim 1, in which a rotating lever (3) and a movable slider (operating cylinder (244, !; 0) are attached to the lever. 10. On the exit side of the rolled product, the pendulum tube (3 or 3
at least one closed roll hole mold (
l→ are placed before and after, ? ″11 hole type (/2
) are each 2 or 3 guide rolls (/3
or uO)
The winding machine described in section. l/, swivel lever (23) or moving slider (
Winding machine according to claim 5 or 9, characterized in that the pulse generator (2j) is arranged in the area of the slug. /U On the positioning device (4=), a number of fixed pulse generators (A, /7./I, and also on the pendulum tube (,7) and the actuating element (7, /9) attached to it, respectively. The winding machine according to claim 1, which is arranged. /, 3. An analog or digital transmitter (5
3) The winding machine according to claim 1, wherein the winding machine 3) is arranged on the pivot axis of the bearing of the pendulum tube (3, 37).