KR950007471Y1 - Roller guide of wire rolling - Google Patents

Abstract

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Description

Horizontal multi-stage roller guide with wire rod

Figure 1a is a process chart for wire rod rolling.

b is an enlarged side cross-sectional view of a conventional static roller guide.

c is a cross-sectional view taken along the line A-A of b.

2 is an exploded perspective view of a conventional static roller guide.

3 is a state diagram for the wire rod rolling process,

a is a rolled state of the billet which progresses A line.

b is the rolling state of the billet which progresses B line.

c is the state where the third billet is the billet of line B.

4A is a plan view of a state in which a billet of line B is lifted and intersects with a billet of line A by inserting a third billet during a conventional wire rod rolling process.

b is an enlarged view of the friction state occurring at the inlet of the static guide during the conventional wire rod rolling process.

c is a perspective view of a horizontal roller formed to improve the friction of the conventional billet.

Figure 5a is a plan view of a multi-stage roller for the present invention.

b is a side view of a multistage roller for the present invention.

Figure 6a is an enlarged front view of the belt groove of the guide roller and the guide roller of the present invention.

FIG. b is a sectional view taken along the line A-A to FIG.

c is a side view showing the configuration in which the idle roller is formed to engage the belt groove of the guide roller.

* Explanation of symbols for main parts of the drawings

1: heater 30: billet

50: guide member 51, 51 ': guide roller

53: guide roller 51a, 53a: groove

54: belt groove 55: idle roller

57: belt 58: water jacket

The present invention relates to a horizontal multi-stage roller guide for wire rod rolling by forming a static guide used in a multi-row wire rod as a horizontal ball roller guide.

In the rough rolling of the wire, a guide is assembled to precisely insert the rolled steel into the roll calibar at the inlet and the outlet of the rolling roll, and the guide is made of a roller guide using a roller and a steel sheet to induce slippage. The guide is provided, and the wire rod has a cross-sectional area much smaller than that of the hot rolled and thick plates, so that the production yield per unit time is much lowered. Therefore, the simultaneous multi-row method such as the second row, the third row, and the fourth row is used.

1 is a process state diagram for the wire rod rolling process of the present invention a is a state of the wire rolling state in two rows, b is a state diagram in which the material is rolled by the guide of the static guide, c is a cross-sectional view of line AA of b According to the present invention, the billet which is the material of the wire rolling is fed and fed simultaneously in the A line and the B line, heated in the furnace 1 for about 90 seconds, extracted in a uniform state at about 1100 ° C, and rough rolling (2) and intermediate rough rolling (5). ), After the intermediate sand rolling (8) is finished in the finishing mill (10).

FIG. 2 is a perspective view of the roller guide 2 proposed to prevent foreign matter from adsorbing on the wall of the static guide 20 as shown in FIG. 1 in the conventional wire rod rolling process. The guide box structure reliably guides the material by the left and right guide rollers 22 and rotates together with the movement of the material by rolling friction movement of the roller by a bearing (not shown). This will achieve a state that does not cause scratches on the side of the material.

3 is a state in which billet is a material passing through the furnace, and a is a schematic state diagram in which the billet is normally charged and extracted in the furnace, and b is a billet rolled on the B line remaining in the furnace. It is a state diagram which obstructs the third billet extracted to the A line, and b is a state diagram for extracting the switch plate to extract the third billet to the A line.

Therefore, when the billet 30 is charged and extracted at the time of heating 1, the billet is inserted into the charging hole 1a provided on the upper side of the heater 1 by a feed roller (not shown) and the working beam is inserted. (Working Beem) moves in a direction by movement.

In this process, the billet cracked to an appropriate temperature by the temperature in the furnace 1 is extracted with a pushout Peelbar (1b) to receive the line selection and guidance of the switch plate (1c) of the pinch roll (1e) The first billet is driven into the roller of the rough rolling mill 2 by the driving force and extracted into the A line when rolling.

Subsequently, the billet extraction state of the second B line passes through the heater 1 in the same state as the billet of the A line to accommodate a predetermined heating condition, but the extraction time of the billet of the A line is 1/2 or more. Start in the rolled state.

In this case, the push-out peel bar 1b is moved to line B, and the billet of line B is extracted and rolled.

Subsequently, the third billet extraction position becomes A-line again, and the extraction time is set when the A-line billet falls out of the tail of the rough rolling (1) stand 1 (the interval at this time is 5 inches).

In this case, since the B line billet is rolling and about one third is in the heating furnace, the third billet cannot be moved to the extraction position, so when the switch plate 1c is lifted as shown in FIG. The third billet can be inserted into the gap that is formed.

When the above state is viewed from the plane, it is twisted into an X shape, and this twisted state is generated in the heating furnace and gradually moves to the switch plate side.

In the course of the twisted state, the billet intersecting the entrance of the static guide 20 as shown in FIG. 4 b is in contact with one wall of the guide, so that the billet at 1100 ° C. adheres to the guide wall. Will be raised.

In this way, when the billet is adsorbed on the guide wall, there is a problem in that a scab (Scab) called scab is generated in the final product and is treated as a defective product.

Therefore, conventionally, in order to solve these problems, the rolling operation is stopped when the billet begins to come into contact with the static guide wall, and the portion where the billet is adsorbed is polished with an abrasive tool such as a hand grinder, so that the scalp is billed. Adopting measures to prevent them from happening has caused huge disruptions to production.

Another method for preventing the occurrence of a scap on the side of the billet was to use a roll guide as shown in Fig. 2, but in the multi-roll rolling method, it was impossible to use because it lifts the billet that crosses the X-shape. .

As another method for preventing the occurrence of a scap on the side of the billet is a hood for fixing the follow block 42 and the follow block 42 in which the horizontal guide roller 41 and the bearing 43 as shown in FIG. A guide roller member 40 composed of 44 has been provided.

The conventional horizontal guide roller 41 having the groove 41a similar to the billet is installed in the state of FIG. 4a, and the billet 30 exiting the heater 1 is installed in the state of the roller 41 in the state of FIG. 4a. When the billet 30 exiting the heater 1 moves through the groove 41a formed in the roller 41, the guide roller 41 is rotated by the frictional force contacted at this time. When lifting the billet of the line, the rotation of the guide roller 41 is stopped, and the two-ton billet impacts the guide roller 41 and the roller guide while the block is stopped. 43) had a problem that is broken.

The present invention is between the guide roller member installed facing up and down so that the phenomenon that the billet is in contact with the side of the static guide generated in the multi-row wire rolling method and the cap phenomenon caused by the billet side is not generated An object of the present invention is to provide a horizontal multi-stage roller guide in which an idle roller member is contacted and passed through a billet.

Next, the present invention will be described in detail with reference to FIGS. 5 to 6.

A belt groove for transmitting power to both side ends of the guide rollers 51 and 51 'in the moving direction of the billet 30 with the guide member 50 having the guide groove 51a having a shape similar to the cross section of the billet. A 52 is formed and arranged up and down to form a billet through hole 52 between the guide rollers 51 and 51 '.

An induction roller 53 having a diameter smaller than the diameter of the guide roller is provided at intervals in front of the guide rollers 51 and 51 '.

Belt grooves 54 for transmitting power are also formed at both ends of the induction roller 53.

The bearings 43 are provided on the support shafts 51b and 53b protruding from both ends of the guide roller 53 and the guide rollers 51 and 51 'so that the rollers 51 and 51' and 53 can be rolled. Install the follow block 42, the built-in, and fixed to the bottom of the follow block 42 by installing a fixing plate 44 for achieving a secure fixing of the block.

An idle roller 55 having a small diameter is provided between the guide rollers 51 and 51 'and the guide roller 53 to make contact with the circumferential surface of the guide roller 51.

Both ends of the idle roller 55 are provided with a knurling groove 55a which meshes with the belt groove in the same direction as the rollers 51, 51 'and 53.

These belt grooves 52 and 54 are preferably formed with an uneven surface in order to hang the belt 57 to improve the power transmission effect, and in some cases, the adhesive (B) to the belt grooves 52 and 54. ) Apply.

The follower block 42 is also installed at both ends of the idler roller 51 to fix it to the floor, and the follower block 42 has a jacking screw 45 for adjusting the contact state of the idler roller 55 to the guide roller 51. Install).

And in front of the guide roller 51 is provided a water jacket 58 for spraying the cooling water for cooling the frictional heat of the guide roller 51.

According to the present invention having the above configuration, the belt 57 is provided on the circumferential surface of each of these rollers in a state where the guide rollers 51 and 51 ', the guide roller 53, and the idle roller 55 are installed in a predetermined state. It walks and adjusts the jacking screw 45 installed in the follow block 44 of the idle roller 53 so that the idle roller 55 contacts the guide roller 51.

This state can be seen in Figure 5b.

In this case, the small guide roller 53 and the lower roller 51 are rotated in the same direction by the belt 57, and the idle roller 53 is rotated by the contact of the guide roller 51. The upper guide roller 51 'is free to rotate by the contact force of the billet.

Therefore, the billet 30 exiting the heating furnace transfers in the general traveling direction.

In this case, it cannot wait until the end of the second billet rolling in the order of multi-row wire rolling. When the third billet is inserted into the heating furnace, the billet located in line B is lifted. When viewed in a planar state is twisted X-shaped, but the billet is heard is separated from the guide roller 53 acting as a guide as in the prior art.

Due to the state in which the billet located in line B is lifted by the guide roller 53, the billet is in contact with the groove 51a of the guide rollers 51 and 51 ', but does not achieve surface contact friction as in the prior art. Since the driving state according to the contact is provided, the billet provides a state in which the friction surface is significantly reduced.

Therefore, the side surface of the billet during the rolling process does not generate any heat phenomenon due to the surface contact movement.

As such, the billet is separated from the groove 53a of the guide roller 53 installed in front of the guide rollers 51 and 51 'of the billet to guide the billet to the guide rollers 51 and 51'. There is no occurrence of a scaffold at all.

In addition, since the contact surface does not occur with the guide roller, the correction work for grinding the part where the billet is in contact with the hand grinder during the operation does not occur.

And, the frictional heat generated during the rolling operation is carried out in the wire rod rolling operation in a state that is sufficiently cooled by the cooling water injected from the water jacket.

In such a horizontal multi-stage roller guide device, it is possible to obtain an effect that a scalp does not occur in terms of the contact area between a billet moving in a heated state and a guide roller that guides and transports the same. Since the contact area does not generate resistance to the parts that help drive the roller, the service life of the parts is not only extended, but the roller arrangement is horizontal, so it is convenient to install and the multi-row work is performed in a flat manner. There is a possible advantage.

Claims (5)

In installing the static guide roller provided for rolling the billet 30 which is uniformly heated and discharged from the heater 1, several grooves 51a and 53a similar to the shape of the billet are formed in parallel. The guide rollers 51 and 51 'are installed up and down to support the drive shafts 51b protruding from both ends of the rollers with the follow block 44 into which the bearings are inserted, and the billet in front of the guide rollers 51 and 51'. The guide roller 53 having the groove 53a of the groove is supported by the follow block 44, and the idle roller 55 is installed between the guide roller and the guide roller so that the circumferential surface is in contact with the guide roller. A horizontal multi-stage roller guide for wire rod rolling, characterized in that the roller is driven by walking on the circumferential surface of the roller. The horizontal multi-stage roller guide according to claim 1, wherein belt guides (52) and (54) are formed on the circumferential surfaces of the guide rollers and the guide rollers so as to hang the belts 57 thereon. The horizontal multi-stage roller guide according to claim 1, wherein the guide roller (53) has a diameter smaller than that of the guide roller (51). The horizontal multi-stage roller guide according to claim 1, wherein the belts (57) which hang on the guide rollers (51, 51 ') and the guide rollers (53) serve as timing belts. The horizontal multi-stage roller guide according to claim 1, wherein the billet grooves (51a) (53a) formed in the guide rollers and the guide rollers are formed in at least four or more.