KR20000021030U - Guide for controlling the diameter of wire rod - Google Patents

Abstract

The present invention enables precise rolling of the wire rod and minimizes the impact of the end of the rolled wire on the guide roller and the rolling mill roll to prevent damage to the ball rolling mill. It is about.

The present invention, when the wire rod in the wire rod rolling equipment is rolled by the finishing mill, the inlet guide for guiding the wire rod to the finishing mill, the base is fixed to the front frame of the finishing mill roll detachably; And a pair of front and rear guide rollers are mounted so as to be opposed to each other and rotatably opposed to each other, while being mounted on the base so as to adjust a gap between the guide rollers. A pair of roller holders; A pair of guide members having a two-divided structure inserted into and coupled to the inner side of the base and having an elliptical cross section joined to each other; And a shock absorbing mechanism for elastically supporting the front end of the guide member in the base to relieve impact force.

Description

Guide for uniform diameter during finishing rolling {GUIDE FOR CONTROLLING THE DIAMETER OF WIRE ROD}

The present invention relates to an inlet guide for guiding a wire rod to a finishing mill when the wire rod is rolled by a finishing mill in the wire rod rolling equipment, and more specifically, enables precise rolling of the wire rod, and the tip of the rolled wire rod is a guide roller. And it relates to a guide for uniform diameter during finishing rolling improved to minimize the impact on the rolling mill roll to prevent damage of the ball rolling mill.

In general, as shown in Figure 1, the wire rod rolling process, the billet 210 heated in the heating furnace 200 for each steel type through the rough rolling 212, the intermediate rolling 214, the finishing rolling 216 The wire rod 220 is formed in a ball size, and is cooled in the water cooling stand 222, then wound into a spiral coil 226, and transferred to a subsequent process through the conveyor roller 228.

In the rolling process of the wire 220, the guide 230 for guiding the rolled wire to the roll 216 ′ of the finishing mill 216 is as shown in FIGS. 2 and 3. That is, the conventional guide 230 has a guide hole 232 in which the elliptical flow path gradually narrows from the inlet side to the outlet side therein, and a plurality of rollers 236 disposed adjacent to the rear side of the guide hole 232. ) When the rolled wire 220 is guided to the roll 216 'of the finishing mill 216 as the guide 230, the rolling wire 220 is shaken and spread due to the change of the rolling conditions. The diameter of the rolled wire 220 is different, such as to change the final ball size.

In the conventional guide 230, the plurality of rollers 236 form a pair, and the intervals between them are fixed and maintained, respectively, and the guide 230 to guide the rolled wires 220 having different diameters. The gap between the rollers 236 was adjusted by rotating the roller gap adjusting bolt 240 provided on the side of the roller.

However, in the conventional guide 230 as described above, the loop 250 and the width of the rolled wire 220 are generated between the rolls 216 'of each finishing mill 216 according to the change of the rolling conditions. In this case, the rolled wire 220 hit the inner surface of the hole 232 and was rubbed while passing through the guide hole 232 of the elliptical flow path of the guide 230, and was rolled in a state where scratches were generated.

Since the roller 236 is formed in a pair, the rolling wire 220 is guided while the vibration occurs in a state shifted from the ball center of the roll 216 'of the finishing mill 216. Precise rolling by) is not made. Then, when entering the roll 216 'of the finishing mill 216 in a state where the ball centers do not coincide exactly, an impact is given to the roll 216' of the finishing mill 216. The rotation defect of the roll 216 'of the 216 was produced, and it became a cause of damage. Therefore, supplying the rolled wire 220 accurately to the ball center of the roll 216 'of the finishing mill 216 has a great influence on the quality of the product, and the roll 216' of the finishing mill 216 It also has a direct impact on durability.

The present invention is to solve the conventional problems as described above, in accordance with the change in the rolling conditions, when the loop and the width of the rolled wire progresses between the rolls of the finishing mill, the center of the ball to the rear finishing mill exactly By guiding the rolled wire, precise rolling is possible, and even when the rolled wire strikes the inner surface of the guide hole, it absorbs the impact force so as not to cause scratches on the surface of the rolled wire and to prevent breakage of the roll of the finishing mill. It is to provide a guide for uniform diameter in improved finishing rolling.

1 is an explanatory view showing a typical wire rod rolling process;

2 is a perspective view of a guide according to the prior art;

3 is a cross-sectional view showing a guide according to the prior art,

a) is a cross-sectional view taken along the line a-a of FIG.

b) cross-sectional view along line b-b of FIG. 2;

4 is a perspective view showing a guide according to the present invention;

5 is a partial cross-sectional side view of the guide according to the present invention;

Figure 6 is a partial cross-sectional plan view of the guide according to the present invention;

Figure 7 is a plan sectional view showing in detail the worm gear portion of the guide according to the present invention;

8 is a partial cutaway perspective view of the buffer portion of the guide according to the present invention;

9 is a partial detailed view of the guide according to the present invention,

a) detail drawing of turning roller holder,

b) is a detail of the base.

Explanation of symbols on the main parts of the drawings

10 ..... Base 20 ..... Roller Holder

22a, 22b .... Guide Roller 32 ..... Eccentric Pin

34 ..... Warm Wheel 38 ..... Warm Gear

40 ..... Cover 43a .... Chilled water supply

50a, 50b .... Guide 55 ..... Shock Absorber

57 ..... Spring 60 ..... Support Plate

63 ..... Fixing bolt 216 .... Finishing mill

216 '.... Ball roll

In order to achieve the above object, the present invention is, when the wire rod is rolled by the finishing mill in the wire rod rolling equipment, in the inlet guide for guiding the wire rod to the finishing mill, removable on the front frame of the roll of the finishing mill. A base secured to The front and rear guide rollers are rotatably opposed to each other, and are mounted on the base so as to adjust an interval between the guide rollers. A pair of roller holders; A pair of guide members having a two-divided structure inserted into and coupled to the inner side of the base and having an elliptical cross section joined to each other; And a shock absorbing mechanism for elastically supporting the front end of the guide member in the base to relieve impact force.

Hereinafter, the present invention will be described with reference to the drawings.

The guide 1 of the present invention, as shown in detail in Figures 4 and 5, the base 10 which is fixed to be detachably fixed to the front frame (not shown) of the roll 216 'of the finishing mill 216. Has The base 10 is mounted so that the fixing groove 12 of the lower surface is fitted to the fixture (not shown) of the frame and detachable to the frame by a separate fixing means (not shown). A pair of roller holders 20 are formed in pairs which are arranged to face each other at the front side.

The roller holder 20 is shown in detail one of them in FIG. 9A. The roller holder 20 has a plurality of front and rear guide rollers 22a and 22b rotatably mounted to each front side so as to be opposed to each other, and a vertical through-hole 24 in the middle portion of the base 10 The roller holder 20 is fixed to the base 10 so that the middle part is rotatably coupled to the pin 26 in correspondence with the upper flange hole 14. In addition, the roller holder 20 has a screw hole 28 formed at the rear thereof, and the fixing bolt 29 coupled to the screw hole 28 from the base 10 is screwed to fix the fixed bolt. The forward and reverse rotation of the 29 moves the rear side of the roller holder 20 to approach the base 10 so that the roller holder 20 is moved forward with the hinge pin 26 at the center thereof. It is comprised so that the space | interval between the some guide roller 22a, 22b of the side may be narrowed or widened.

In addition, the pair of roller holders 20 mounted on the base 10 to adjust the distance between the guide rollers 22a and 22b as described above are selected from among the plurality of guide rollers 22a and 22b. The rear guide rollers 22b are configured to move relative to the roller holder 20 and to adjust the gap therebetween.

That is, the front guide roller 22a is mounted on the roller holder 20 through a straight pin 30 as shown in FIG. 5, but the rear guide roller 22b is centered differently from the above. It is fixed using an eccentric pin 32 eccentric to one side. And, the worm wheel 34 is mounted on the upper end of the eccentric pin 32 eccentric as described above, the worm wheel 34 to the roller holder 20 to be rotatable on the upper surface of the roller holder 20 The worm gears 38 on the bolts 36 mounted across the gears are geared to each other. Therefore, when the worm gear 38 is rotated through the rotation of the bolt 36, it rotates the eccentric pin 32 through the worm wheel 34, the bearing 32a on the eccentric pin 32 The position of the guide rollers 22b mounted to be rotatable is changed, and the distance between the rear guide rollers 22b is narrowed or widened as shown in FIG. 7. In this structure, the worm wheel 34 and the worm gear 38 are respectively accommodated in the inner space of the upper cover 40 fixed to the upper side of the roller holder 20 to be protected from the outside, and the upper cover 40 On one side of the roller holder 20 is formed a cooling water supply port 43a having a flow path 43 formed in the receiving space of the guide rollers 22a and 22b of the roller holder 20, and the front and rear guide rollers 22a and 22b. A plurality of lubricating oil supply ports 45a in which a flow path 45 is formed on the hinge pins 30 and 32 side are provided.

In addition, having a two-divided structure that is inserted into the inside of the base 10 is coupled to each other, it is provided with a pair of guide members (50a, 50b) having an elliptical cross-section coupled to each other, the guide members (50a) (50b) As shown in FIG. 8, when opposingly coupled to each other, an elliptical space is formed inside the longitudinal direction, and the rear side has a large diameter and the front side has a narrow diameter.

In addition, the guide members 50a and 50b are fixed to the front side by a ring-shaped fixture 53 in a state where they are coupled to each other, and the portion of the fixture 53 is connected to the shock absorbing mechanism 55 inside the base 10. Is elastically supported laterally.

As shown in FIG. 6, the shock absorbing mechanism 55 is mounted with springs 57 inward and inward of the roller holders 20 facing each other, and both sides are supported at inner ends of the springs 57, respectively. The position is fixed, and the rear end of the spring 57 is supported by the support plate 60 fixed to the roller holder 20, respectively. In addition, the guide members 50a and 50b are supported by both sides by fixing bolts 63 which penetrate inwardly from both sides of the base 10, thereby maintaining a two-split structure in a single tubular base 10. It is fixed to guide the rolled wire 220 to the inside.

The guide 1 of the present invention configured as described above has a front end of the guide members 50a and 50b to alleviate the impact to the left and right by the shock absorbing mechanism 55, the guide roller of the roller holder 20 The distance between the pairs of 22a and 22b is adjustable by adjusting the fixing bolt 29 about the pin 26 of the roller holder 20, and the rear guide roller mounted on each roller holder 20. The interval between the 22b has an arrangement that is adjustable by the worm wheel 34 and the worm gear 38.

Therefore, the guide members 50a and 50b corresponding to the diameter of the rolled wire 220 to be produced are selected and inserted into the base 10, and are mounted on the base 10 as fixing bolts 63. Then, the worm wheel 34 and the worm gear 38 are rotated to appropriately spread between the rear guide rollers 22b mounted on the eccentric shaft 32, and the guide roller mounted on the roller holder 20 ( The spacing between the pair of guide rollers 22a and 22b is adjusted to suit the diameter of the rolled wire 220 by appropriately adjusting the spacing between the pairs of 22a) and 22b using the fixing bolts 29.

Then, when the gap adjustment is completed in this way, it is fixed to the frame on the front side of the roll (216 ') of the finishing mill 216, the lubricant supply port 45a and the cooling water supply port (43a) to supply the lubricant and cooling water, respectively It is to be made.

According to the present invention configured as described above, the loop and the spread of the rolled wire 220 are generated between the finishing mill rolls 216 'according to the change of the rolling conditions, and in such a state, the inside of the guide members 50a and 50b. When the rolled wire 220 flows in, the shock absorbing mechanism 55 primarily absorbs the impact force applied by the rolled wire 220 to the inner surfaces of the guide members 50a and 50b. In addition, the rolled wire 220 in which the impact force is weakened enters between the rear guide rollers 22b of the roller holder 20, and the shaking phenomenon of the rolled wire 220 is secondarily corrected. The straightened rolled wire 220 passes between the front side guide rollers 22a, thereby absorbing the shaking phenomenon of the rolled wire 220 in a third direction, leading to the roll 216 'side of the finishing mill 216 in front of it. It is to let.

As described above, the rolled wire 220 having the shaking corrected for three times may be guided to the center of the ball roll 216 'of the finishing mill 216 provided in front of the guide 1 of the present invention.

In this process, the cooling water is efficiently supplied to prevent deterioration of the guide rollers 22a and 22b.

On the other hand, when the impact force of the rolled wire 220 is excessively acting in the guide members 50a and 50b so as to be greater than the support force of the spring 57 of the shock absorbing mechanism 55, the ring-shaped fastener 53 moves forward. While being pushed away from the guide members 50a and 50b, the guide members 50a and 50b are repulsed in the opposite direction, drop off from the fixing bolt 63, and fall apart to the rear side of the base 10. . Therefore, damage to the guide members 50a and 50b is prevented and damage to the guide rollers 22a and 22b and the rolling roll 216 'is prevented by preventing the progress of the rolled wire 220.

According to the present invention as described above, when the loop and the width of the rolled wire 220 advances between the rolls 216 'of the finishing mill 216 according to the change of rolling conditions, the finishing mill 216 of the rear side. By precisely guiding the rolled wire 220 to the center of the ball shape, precise rolling is possible, and even when the rolling wire 220 collides with the inner surface of the guide hole, it absorbs the impact force and thus the surface of the rolled wire 220. It is possible to obtain an improved practical effect without causing scratches or the like and to prevent breakage of the roll 216 ′ of the finishing mill 216.

Claims (4)

When the wire rod 220 is rolled by the finishing mill 216 in the wire rod rolling equipment, in the inlet guide (1) for guiding the wire rod 220 to the finishing mill 216, A base 10 fixed to the front frame of the roll 216 'of the finishing mill 216 to be detachable; It forms a pair arranged opposite from both sides of the base 10, a plurality of front and rear guide rollers (22a, 22b) are mounted on each front side so as to be rotatable to face each other, while the guide roller (22a) ( A pair of roller holders 20 mounted on the base 10 so as to adjust the distance therebetween; A pair of guide members (50a) (50b) having a two-divided structure inserted into and coupled to the inside of the base (10) and having cross-sections joined together to form an oval shape; And a buffer mechanism 55 for elastically supporting the front ends of the guide members 50a and 50b in the base 10 to mitigate impact force. Guide. The roller holder (20) according to claim 1, wherein a plurality of front and rear guide rollers (22a) and (22b) are mounted on each front side so as to be rotatable to face each other. The roller holder 20 is fixed to the base 10 so that the middle part is rotatable by being coupled to the pin 26 in correspondence with the upper flange hole 14 of the base 10, and the fixing bolt 29 at the rear thereof. ) Is screwed and configured to narrow or widen the space between the plurality of guide rollers 22a and 22b on the front side around the hinge pin 26 in the center, while the guide roller 22a ( 22b) A plurality of cooling water supply holes 43a each having a flow path 43 formed as a receiving space, and a plurality of flow paths 45 formed at hinge pins 30 and 32 of the front and rear guide rollers 22a and 22b. Lubricant supply port (45a) is characterized in that the uniform diameter during rolling Guide. The front guide roller (22a) is mounted on the roller holder (20) via a straight pin (30), and the rear guide roller (3) is mounted among the plurality of guide rollers (22a) (22b). 22b) is fixed using an eccentric pin 32, the center of which is eccentric to one side, the worm wheel 34 is mounted on the top of the eccentric pin 32 eccentric as described above, the worm wheel 34 Has a structure in which the worm gears 38 on the bolts 36 mounted across the roller holders 20 are geared so as to be rotatable on the upper surface of the roller holders 20, thereby rotating the bolts 36. When the worm gear 38 is rotated through it, it rotates the eccentric pin 32 through the worm wheel 34, and a guide mounted on the eccentric pin 32 so as to be rotatable through a bearing 32a or the like. Straight rolling during the rolling, characterized in that configured to narrow or widen the interval between the rollers (22b) Uniformly to the guide. According to claim 1, wherein the guide member (50a, 50b) is fixed to the front side with a ring-shaped fixture 53 in a state coupled to each other, the fastener 53 portion of the shock absorbing mechanism inside the base (10) While elastically supported laterally by 55, the shock absorbing mechanism 55 mounts a spring 57 to the rear inner side of the roller holder 20 facing each other, and the inner side of the spring 57 Both sides of the fixture 53 are supported at the end and fixed to each other, and the rear end of the spring 57 is supported by the support plates 60 fixed to the roller holders 20, respectively, and the guide member 50a ( 50b) uniformly diameters during finishing rolling, characterized in that both sides are supported by fixing bolts 63 penetrating inwardly from both sides of the base 10 to guide the rolled wire 220 to the inside thereof. Guide.