JPH0450969Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to bar winding equipment, and is particularly suitable for use in rolling equipment having a polling type winder, and is suitable for use in finishing rolling mills. Improved bar winding equipment in which the rolled bar is guided and conveyed by conveyor rolls, pinch rolls, R guides and bending rolls arranged at the rear, and wound into a coil by a winder. Regarding.

[Conventional technology]

The rolled bar or tube that comes out of the final rolling mill is guided and conveyed by a guide tube, pinch rolls, and curvature guide installed at the rear, and then passed through a driving device just before the winder and wound into a coil. It will be done. As this driving device, a bending roller, a driving tube, etc. are used, and Japanese Patent Publication No. 45-27899 describes a driving device using a bending roll.

The winding machine considered here is known as a polling type winding machine, in which an inner cylinder that regulates the inner periphery and an outer cylinder that regulates the outer periphery are integrated with a bottom plate and rotate together. In this polling type winder, a driving device that guides the bar into the winder plays an important role.

First, the bar material is wound up by a winding machine as follows. In other words, the winding machine of the bar-in-coil equipment has the fourth
As shown in the figure, a bar 1 rolled by a finishing mill 21 is guided and conveyed on a conveying line 20 by a conveying roll 22, a pinch roll 23, an R guide 3, and a bending roll 6, and then coiled by a winding machine 8. Roll up into a shape.

The winder 8 has an inner cylinder 9 that regulates the inner circumference of the bar 1.
and a bottom plate 11 configured to rotate together with the inner cylinder 9.
and an outer cylinder 10 that regulates the outer circumference of the wound bar 1.
, an R guide 3 for guiding the bar 1 to the polling type winder, and a driving device (bending roll 6).

The winding behavior of the bar 1 when the polling type winder is rotating at a constant rotational speed is as follows.

That is, at the beginning of winding, the tip of the bar 1 is guided to the bending roll 6 by the R guide 3,
One turn is first wound around the outer cylinder 10, ie, the outer diameter, of the polling type winder, and then the subsequent bar material 1 is wound around the inner periphery. Then, it is wound up on the inner circumferential side of the wound bar 1 one after another.

In this way, the bar 1 is wound up to the inner tube 9 of the polling type winder, that is, to the inner diameter, and when the bar 1 fills one layer of the bottom plate 11 of the polling type winder, then the bar 1 is transferred onto the first layer and wound.

Then, this time, the second layer is wound in order from the inner diameter to the outer diameter so that it is wound around the outer periphery of the bar 1 that has just been wound in the opposite way to the first layer. When the second layer is finished, the bar 1 moves to the third layer, where it is wound from the outer diameter to the inner diameter.In this way, the bar 1 is layered and coiled, and is wound sequentially to the tail end. taken.

[Problem that the invention attempts to solve]

At this time, the driving device plays the role of a connection between the guiding conveyance equipment and the winding machine, but guiding at a fixed position and angle is insufficient for small-diameter bars with low rigidity and high winding speed. As shown in FIG. 6, at the initial stage of winding, the centrifugal force causes the outer cylinder 10 to come into tight contact with the outer cylinder 10 and not reach the bottom plate 11 (shelf hanging).

When shelving occurs, the full depth of the winder is not used effectively, and at the end of winding, the bar overflows from the outer cylinder, making winding impossible. Further, in the case of a large-diameter bar with high rigidity, it will reach the bottom plate under its own weight, but when it falls, it will come into contact with the outer cylinder and easily cause scratches on the outer cylinder.

The curvature when turning a straight bar into a ring shape depends on factors such as the rigidity of the bar, centrifugal force, contact resistance with the inner and outer cylinders, the position of the coil that has already been wound, and the position of the tip of the driving device. It changes depending on the relationship etc.

Fixed type driving devices do not have a function to control this curvature, so the curvature of each ring of the wound coil is misaligned and the coil shape is poor, resulting in the coil becoming tangled when being unwound and used by the customer. Easy to get scratches during transportation. This causes problems such as the binding tends to loosen and the load tends to collapse.

In order to solve this problem, a bending roll is known in which a coil shape of aligned winding is obtained by bending the coil at the exit of the driving device and controlling the curvature.

However, as shown in FIG.
2 are fixedly arranged together, so there is no problem when winding large diameter bars where the shelf hanging phenomenon does not occur.However, for small diameter bars, the guiding angle to the winding machine (driving angle It must be at a steep angle.

The tip of the bar driven at an extremely steep angle hits the bottom plate 11 of the winder 8 and creates scratches, which are transferred to the bar and cause defects in the finished product.

Due to these problems, bending rolls have traditionally been used only for large-diameter bars with no shelf-hanging phenomenon and high bending rigidity. A loading device is applied, and the use is changed depending on the bar size.

Therefore, the winding equipment requires at least two lines, and when changing the size of the bar, switching the winding machine is complicated and takes a long time.

[Means for solving problems]

In the present invention, bars rolled in a finishing mill are transported by rotating horizontal rolls arranged at regular intervals, which are arranged at the rear of the rolling mill, and a pair of upper and lower transport rolls 22 for transporting the bars. A pinch roll 23 that pinches the bar material with the rolls and sends out the bar material by applying rotational drive to the rolls, and an R guide 3 that guides the bar material to a bending roll device 5 installed tilting downward in the direction of travel. , a winding equipment in which the bar is guided by a bending roll 6 that bends the bar at an arbitrary driving angle, and is wound into a coil shape by a polling type winder, and two or more lengths can be selected. An R guide equipped with a conveyance line and an R guide shift device 4 for selecting the R guide are provided on the R guide, and a bending roll shift base is disposed directly above the winder 8 on a horizontal plane in the bar traveling direction, A bending roll base is slidably provided on a bending roll shift base, and a bending roll device having a plurality of bending rolls is placed on the bending roll base so as to be tiltable at a driving angle θ. This is a special feature of the bar winding equipment.

[Effect]

The operation of the present invention will be explained using FIG.

When winding large-diameter bars that do not cause the shelf-hanging phenomenon, use the long R guide 3B to set the driving depth to H _1.
shall be. Note that the driving angle at this time is θ ₁ .

However, when winding a small diameter bar with a high rolling speed at this driving angle, a shelf hanging phenomenon will occur, so an R guide shift device is used to shorten the R
Shift the guide 3A to the conveyance line 20, and use the bending roll shift device to shift the bending roll to the finishing mill side (leftward in the figure), and set the driving depth to H ₂ (H ₂ > H ₁ ).

Note that the driving angle at this time is θ ₂ . By doing so, it becomes possible to wind up a small diameter bar at a high winding speed.

〔Example〕

FIG. 1 is a plan view showing the R guide and the bending roll device.

The short R guide is represented by 3A, and the long R guide is represented by 3B. In the figure, the short R guide 3A is being used, but when using the long R guide 3B,
The R guide shift device 4 moves the R guide 3B to the conveyance line.

However, it remains fixed during winding and moves at the change in rolling size. Reference numeral 5 denotes a bending roll device incorporating a bending roll 6, which is moved forward and backward (to the left and right in the figure) by a bending roll shift device 7.

FIG. 2 is a side view showing details of the bending roll device.

The bending roll device 5 is the driving angle changing device 1
3. Drive angle changing pin 14, support roll 15
is supported by When changing the driving angle, when the rod of the driving angle changing device 13 is expanded or contracted, the bending roll device 5 rotates about the driving angle changing pin 14 as a fulcrum and moves on the support roll 15.

If you change the length of the R guide 3 shown by the dotted line on the upper left, bending roll shift base 17
Bending roll base 1 installed on top
6 is moved left and right by a bending roll shift device 7. Note that the winder 8 is indicated by a dotted line in the lower right corner.

The winding operation in this embodiment will be described with reference to Figures 1 to 3. The bar 1 coming out of the finishing mill 21 is supported and guided by the transport rolls 22, the pinch rolls 23, the R guide 3 and the bending rolls 6, and is wound into a coil by the winder 8.

When winding a large bar 1 at a low winding speed, the bending roll 6 is shifted by the bending roll shift device 7 to the center of the polling winder 12 and the center of the bending roll 6B. The R guide 3B is shifted to the conveyance line 20 by the R guide shift device 4.

On the other hand, when winding the bar 1 with a small size and a high winding speed, the bending roll 6 is shifted to the finishing rolling mill side by the bending roll shift device 7 and shortened. The paddle R guide 3A is shifted to the conveyance line 20 by the R guide shift device 4.

[Effect of idea]

According to this invention, winding and curvature control using bending rolls can now be applied to thin-diameter rod material, which was previously not possible, and the improvement of the coil shape has the effect of preventing the occurrence of scratches, the collapse of the load, and poor rewinding.

Furthermore, since many types of conventional driving devices can be combined into one type, equipment costs can be reduced, and there is an excellent effect of reducing time and labor losses when changing driving devices.

[Brief explanation of the drawing]

Figure 1 is a plan view showing one embodiment of the present invention, Figure 2 is a plan view showing one embodiment of the present invention;
The figure is a detailed view of the bending roll device according to the present invention, Figure 3 is an explanatory diagram of the operation of the present invention, Figure 4 is an overall configuration diagram of the bar-in-coil equipment, and Figure 5 is a large-sized bar and winding. An explanatory diagram showing the relative positional relationship between the bending roll and the polling type winder when winding a bar with a small diameter. Figure 6 shows the shelf hanging that occurs when winding a bar with a small diameter and a high winding speed. It is an explanatory diagram showing a phenomenon. 1... Bar material, 3... R guide, 4... R guide shift device, 5... Bending roll device, 6
... Bending roll, 7 ... Bending roll shift device, 8 ... Winding machine, 9 ... Inner cylinder, 1
0... Outer tube, 11... Bottom plate, 12... Center of winder, 13... Driving angle changing device, 14... Pin for driving angle changing, 15... Support roll, 16...
... bending roll base, 17 ... bending roll shift base, 20 ... conveyance line, 21 ... finishing rolling machine, 22 ... conveyance roll,
23...Pinch roll.

Claims (1)

[Scope of utility model registration request] A conveyor roll 22, which conveys the bar material rolled by the finishing rolling mill, is provided with rotationally driven horizontal rolls disposed at the rear of the rolling mill, which are arranged at regular intervals;
The bar is held between a pair of upper and lower rolls, and
Pinch rolls 23 that apply rotational drive to the rolls and send out the bars, and R guides 3 that guide the bars to the bending roll device 5 installed tilting downward in the direction of travel.
The winding equipment uses bending rolls 6 to bend the bar material at an arbitrary driving angle, and winds the bar material into a coil shape using a polling type winding machine. Two types of length can be selected. An R guide equipped with the above conveyance line and an R guide shift device 4 for selecting the R guide are provided on the R guide, and a bending roll shift base is disposed directly above the winder 8 on a horizontal plane in the bar traveling direction. , a bending roll base is slidably provided on a bending roll shift base, and a bending roll device having a plurality of bending rolls is placed on the bending roll base so as to be tiltable at a driving angle θ. A bar winding equipment featuring: