JP3397512B2 - Inlet roller guide for angle iron - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inlet roller guide of a rolling mill for chevron rolling for accurately rolling the corners of equilateral and unequal chevron.

[0002]

2. Description of the Related Art Conventionally, as far as the applicant of the present invention has investigated, it has been installed at the entrance of a rolling mill for angle steel for rolling equilateral angle steel and unequal angle steel (hereinafter referred to as "angle steel"). It is not possible to confirm the disclosure of the technology regarding the inlet roller guide for guiding the rolled material to the rolling rolls, but as an inlet roller guide for the channel steel, it is disclosed in Japanese Utility Model Laid-Open No. 61-1173
No. 11 discloses a "guide device for rolling channel steel". According to the guide device of this publication, an upper surface guide roller for guiding the upper surface of the rolled material is disclosed in addition to a pair of left and right side guide rollers for guiding both side surfaces of the rolled material. In this guide device, the U-shaped rolled material is rolled by passing it between the upper and lower slurries provided above and below, the upper guide roller provided on the upper slurries, and the side guide rollers. It is intended to guide you exactly.

[0003]

According to the prior art,
Compared to guiding the rolled material with only a pair of upper and lower thrusters,
Although in that it is capable of guiding the rolled material from the lateral and upward direction in the side surface and the upper surface guide roller there is improvement, a function of adjusting the biting height of the rolled material for rolling rolls to Bei Ete not, rolling There are problems that the corners of the material cannot be accurately rolled and that the distance between the pair of left and right side guide rollers cannot be easily adjusted according to the width of the rolled material. It is well known that in the rolling of angle steel, it is necessary to roll the corner portion of the mountain portion accurately (to prevent the mountain from tipping over) and to accurately roll the length of the side portion. Therefore, it is necessary to adjust the biting height of the rolled material with respect to the rolling rolls accurately in order to prevent the mountain from falling and to accurately roll the corners of the mountain portion. In order to roll into a roll, it is necessary to accurately center the left and right positions of the rolled material with respect to the hole shape of the rolling roll. It should be noted that "mountain fall" means that, in the rolling industry, the mountain portion is not accurately rolled on the angle steel for the rolled material to fall and be caught by the rolling roll. An object of the present invention is to make it possible to adjust the height and the left and right positions of a rolled material for angle steel, and to enable accurate rolling of the corner portions and side portions of the mountain portion of the angle steel. is there.

[0004]

SUMMARY OF THE INVENTION The present invention is an inlet roller guide which is provided at the inlet of a rolling mill for chevron steel and guides a rolled material into a rolling roll hole shape. It is possible to accurately position and adjust the left and right positions of the rolled material with respect to the hole shape of the rolling roll by providing the space adjusting means, and to adjust the height of the rolled material by providing the lower guide roller with a height adjusting mechanism. It is possible. In the present invention, a pair of roller holders that are rotatably supported on the guide box by fulcrum pins, a guide roller that is rotatably supported by roller pins on one end side of each roller holder, and the roller holder A pair of screw spindles of mutually opposite screws that are in contact with the other end side and are rotatably supported by the guide box, a center wheel that meshes with the screw spindle with a female screw, and the other end of the roller holder The tension spring is locked between the two sides to pull the other end of this roller holder, the entry guide attached to the guide box, and the lower fulcrum pin can be rotated below the guide box. and lower guide rollers are rotatably journaled around the roller pin and the lower roller holder, at one end of the lower roller holder that is rotatably supported on the lower roller The pressing spring provided between the other end side of the rudder and the guide box, the adjusting bolt inserted through the other end side of the roller holder from the guide box, and the roller holder which is engaged with the adjusting bolt. The adjustment box is in contact with the guide box. In the present invention, as a mounting method of the adjustment bolt, in the case of such a narrow space of the adjusting nut below the guide box penetrates the other end of the lower roller holder with upright adjusting bolt from the guide box, The adjusting nut meshes with the protruding end of the adjusting bolt and contacts the lower roller holder. In the present invention, it is preferable that one or both of the entry guide and the lower guide roller have a hole shape similar to the shape of the rolled material in order to enable more accurate rolling. In the present invention, the guide box is supported so as to be laterally movable in the direction intersecting the pass line as one means for adjusting the center of the roller guide to the hole center of the rolling roll R easily and accurately. and a saddle that is, so as comprising a horizontal movement device for lateral movement of the guide box, and a fixing device for fixing the movement of the guide box.

[0005]

In order to guide the rolled material for angle iron with the inlet roller guide of the present invention, first, the center wheel is rotated to expand and contract the screw spindle that is in contact with the roller holder. That is, the interval between the guide rollers is adjusted to match the width dimension of the rolled material, and the left and right positions of the rolled material correspond to the hole shape of the rolling roll. Next, the biting height of the rolled material into the rolling roll is adjusted. In this adjustment, the adjustment nut may be rotated to change the height of the lower guide roller pivotally supported on the one end side of the lower roller holder. That is, when the adjustment nut is screwed in, the height of the lower guide roller rises, and when the adjustment nut is unscrewed, the height of the lower guide roller can be lowered. It suffices to adjust the height so that it is bitten into a hole shape. In addition, the lower roller holder is configured to constantly press the adjustment nut by the spring force of the pressing spring, so that the lower guide roller axially supported on one end side of the lower roller holder is stable in the vertical direction without rattling. And held. By moving the guide box a predetermined distance in the direction intersecting the pass line on the saddle using the lateral movement device, the center of the guide box can be aligned with the hole center of the rolling roll. It is possible to accurately guide to the hole shape.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 4, the guide box 1 is provided at an inlet of a rolling mill for angle steel (equal angle steel in this example). A pair of roller holders 2 are erected on the guide box 1 in an upright state by a fulcrum pin 3 so as to be opened and closed. A guide roller 4 is rotatably supported by a roller pin 5 at one end (left end in FIG. 2) of the roller holder 2. Roller holder 2
At the other end (the right end in FIG. 2) of the guide box 1, there are provided a pair of screw spindles 6 which are rotatably supported by the guide box 1 and have mutually opposite screws, and a center wheel 7 which meshes with each screw spindle with a female screw. ing. A tension spring 8 for keeping the roller holder in contact with the screw spindle 6 is locked between the other ends of the roller holders 2, and the tension springs pull the other ends of the roller holders in directions toward each other. I am gathering. An entry guide 9 having a hole shape similar to that of the rolled material is inserted in the guide box 1, and the entry guide is fixed to the guide box by a holding bolt 10. The entry guide 9 has a hole shape 9a (FIG. 3) that approximates the shape of the rolled material W for equilateral angle steel.
have. PL indicates a pass line and R indicates a rolling roll (see FIGS. 1 and 4).

1 to 3, a lower roller holder 11 is rotatably supported below the guide box 1 so as to be rotatable about a lower fulcrum pin 12. Lower roller holder 1
In No. 1, both ends can move up and down like a seesaw with the rotation around the lower fulcrum pin 12. As shown in FIGS. 1 and 2, a lower guide roller 13 is rotatably supported by a roller pin (not shown) at one end (left end in FIG. 1) of the lower roller holder 11 about the roller pin. . The lower guide roller 13 has a surface shape similar to the shape of the rolled material W for equilateral angle steel, as shown in FIG. The other end of the lower roller holder 13 and the guide box 1
A pressing spring 14 is locked between the mounting plate 1a and the mounting plate 1a. The pressing spring 14 biases the lower roller holder 13 with a spring force counterclockwise in FIG. 1 about the lower fulcrum pin 12. For this reason, the spring force is applied in a direction in which the height of one end of the lower roller holder 13 is lowered and that of the other end is raised. An adjusting bolt 15 standing upright from the mounting plate 1a of the guide box 1 passes through the other end of the lower roller holder 13, and the upper end of the adjusting bolt projects from the other end. An adjusting nut 16 is screwed into the protruding end of the adjusting bolt 15, and the adjusting nut is in contact with the upper surface of the other end of the lower roller holder. Since the spring force of the pressing spring 14 biases the spring between the guide box 1 and the other end of the lower roller holder 13 in the opening direction , the adjustment nut 16 exerts a predetermined spring force on the lower roller holder. And the lower roller holder is held stably.

Here, the adjusting bolt 15 and the adjusting nut 1
The relationship between 6 and the lower guide roller 13 will be described. When the adjusting nut 16 is screwed in, the other end side of the lower roller holder 11 is lowered against the spring force of the pressing spring 14 to approach the mounting plate 1a of the guide box, and one end side is raised, so that the height of the lower guide roller 13 is increased. Will increase. On the contrary, when the adjusting nut 16 is unscrewed, the height of the lower guide roller 13 is lowered. In this way, the height of the lower guide roller 13 is appropriately changed by adjusting the adjusting nut 16 to adjust the biting height of the rolled material to the rolling roll to an optimum height.

In this embodiment, as shown in FIGS. 1 and 3, the guide box is moved laterally so that the center of the roller guide can be adjusted easily and accurately in correspondence with the center of the hole of the rolling roll R. The device 17 is provided and the guide box 1
Is installed on the saddle 18 so as to be movable by an appropriate amount of movement in a direction intersecting the pass line PL. Lateral movement device 1
7 includes a slide screw 19 which penetrates in a direction intersecting the saddle 18 and the pass line PL, a slide bracket 20 that the slide screw engaged with the internal thread, over the lower and the saddle 18 of Gaidobo click scan 1 It comprises a moving groove 21 provided. Slide bracket 2
0 is arranged in the groove 21 for movement, and when the slide screw 19 rotates, the direction 0 intersects the pass line PL according to the rotation direction (direction perpendicular to the plane of FIG. 1),
That is, one of the left and right sides can be moved laterally, and therefore the guide box 1 can also be moved laterally. Guide
Click scan 1 is fixed to the saddle 18 always by the clamp 22 is fixed device and clamp bolt 23.
Adjust the center of Gaidobo click the scan 1 to Anagata center of the rolling roll R
At the time of pollock Ruiwayuru centering, the clamp bolt 2
3 is loosened so that the guide box 1 can be moved, and the slide screw 19 is rotated.

Next, a method of using the inlet roller guide of the present invention will be described. To adjust the distance between the pair of left and right guide rollers 4 according to the rolled material W, the center wheel 7 may be rotated to change the protruding length of the screw spindle 6. The distance between the guide rollers 4 pivotally supported on one end of the roller holder 2 is adjusted with the fulcrum pin 3 as the opening / closing center according to the movement amount of the screw spindle 6. As shown in FIG. 4, the interval between the guide rollers 4 may be adjusted so as to be approximately the same as the width dimension of the rolled material W, and the rolled material is guided to the center of the hole shape of the rolling roll R. In order to adjust the biting height of the rolled material into the hole shape of the rolling roll R, the adjusting nut 16 is rotated to adjust the height of the lower guide roller 13. As shown in FIG. 5, the hole shape of the lower guide roller is almost the same as the shape of the rolled material, and the rolling is adjusted so as to be caught in the hole center of the rolling roll R by adjusting the distance between the guide rollers 4. Adjust the height so that the material is rolled accurately. In the case of the above embodiment, as shown in FIGS.
When the height of the lower guide roller 13 was adjusted so that the corner of the rolled material W was at a higher position (indicated by the dimension D) with respect to the hole-shaped corner of the final rolling roll R, it was rolled by the final rolling roll. The equilateral angle steel Wa is rolled accurately, and its optimum height (position) is determined by the rolling record. Therefore, it goes without saying that the lower guide roller 13 and this height adjusting mechanism are indispensable for the inlet roller guide of the equilateral angle steel rolling mill. In order to accurately center the inlet roller guide of this example in accordance with the hole shape of the rolling roll R, the clamp screw 23 of the clamp 22 is loosened, and then the slide screw 19 is rotated, and the slide screw 19 is rotated in accordance with the rotation direction. The slide bracket 20 meshed with the female screw moves, and the slide bracket presses the side surface of the moving groove 21 on the guide box 1 side, so that the guide box moves laterally. In this way, by adjusting the rotation direction and the rotation amount of the slide screw 19, the lateral movement amount of the guide box 1 is regulated to perform centering.

[0011] In the above example, the entry guide 9 have a hole shape which approximates the shape of the rolled material, the lower guide rollers 13,
Since the surface shape is similar to that of the rolled material, the rolled material W can be accurately guided. Further, only one of the entry guide 9 and the lower guide roller 13 may have the above configuration.

In the above example, the inlet roller guide for equilateral angle steel is described, but it goes without saying that the present invention can be applied to unequal angle steel. Also in this case, as shown in FIG. 9, the guide rollers 4A are positioned such that the corners of the rolled material W1 for unequal angle helix steel are accurately guided to the hole-shaped corners of the rolling roll, and The lower guide roller 13A has substantially the same surface shape as the shape of the rolled material W.

With regard to the shape of the lower guide roller, the hexagonal lower guide roller 13B may be formed as shown in FIG.
The surface shape is appropriately selected.

If the adjusting nut 16 is brought into contact with the upper surface of the lower roller holder 13 as shown in FIG. 1, the adjustment work can be facilitated. However, the present invention is not limited to the example shown in the drawing, and the guide box side (in the example shown in FIG. It may be configured so as to contact the lower surface side of the plate 1a).

[0015]

According to the structure of the present invention, not only the pair of left and right guide rollers whose intervals are adjusted by the roller interval adjusting means such as a screw spindle can accurately guide the rolled material to the center of the roll shape, but also The lower guide roller equipped with a height adjustment mechanism can finely adjust the biting height of the rolled material into the rolling roll hole shape to adjust it to the optimum position, so that the corners of the angle steel can be rolled accurately. Or, it becomes possible to roll the side length accurately.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a side view showing an embodiment of the present invention.

FIG. 4 is a side view showing the relationship between the guide roller of the present invention and a rolled material.

FIG. 5 is a side view showing the relationship between the lower guide roller of the present invention and a rolled material.

FIG. 6 is a diagram showing the height of the lower guide roller of the present invention and the state of biting of the rolled material into the rolling roll.

FIG. 7 is an enlarged sectional view taken along the line AA of FIG. 6A.

FIG. 8 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 9 is an enlarged side view showing a mutual relationship among a guide roller, a lower guide roller and a rolled material according to another embodiment of the present invention.

FIG. 10 is a side view showing still another embodiment of the lower guide roller of the present invention.

[Explanation of symbols]

1 guide box 2 roller holder 3 fulcrum pin 4 Guide roller 4A guide roller 5 Roller pin 6 screw spindle 7 Center wheel 8 tension spring 9 Entry guide 10 Presser bolt 11 Lower roller holder 12 Lower fulcrum pin 13 Lower guide roller 13A lower guide roller 13B Lower guide roller 14 Pressing spring 15 Adjustment bolt 16 Adjustment nut 17 Lateral movement device 18 saddle 19 slide screw 20 slide bracket 21 Moving groove 22 Clamp 23 Clamp bolt PL pass line R rolling roll W rolled material Wa equilateral angle steel (angle steel) W1 rolled material for angle iron

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-126318 (JP, A) JP-A-61-266114 (JP, A) Actually open 58-51807 (JP, U) Actual-open 1- 127605 (JP, U) Actual development Sho 61-117311 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B21B 39/14 B21B 1/08

Claims (6)

(57) [Claims] 1. A pair of roller holders erected in a guide box so as to be openable and closable by a fulcrum pin, a guide roller rotatably supported at one end of each roller holder, and other roller holders. A pair of screw spindles of mutually opposite screws that are rotatably supported by the guide box and abut on the end side, a center wheel meshed with the screw spindle by a female screw, and both of the roller holders. A tension spring that locks between the other end sides and draws the other end sides of the roller holders toward each other, an entry guide attached to the guide box, and a lower side of the guide box. A lower roller holder that is rotatably supported by a lower fulcrum pin, a lower guide roller that is rotatably supported on one end side of the lower roller holder, Between the side of the lower roller holder and the guide box, which is provided between the guide box and the lower side of the lower roller holder. An inlet roller guide for angle iron, comprising: an adjusting bolt; and an adjusting nut that meshes with the adjusting bolt and fixes the connection between the lower roller holder and the guide box. 2. The adjusting bolt according to claim 1, wherein the adjusting bolt stands up from the guide box and penetrates through the other end portion side of the lower roller holder, and the protruding nut of the adjusting bolt meshes with the adjusting nut and abuts against the lower roller holder. Inlet roller guide for angle steel. 3. The inlet roller guide for angle steel according to claim 1 or 2, wherein the entry guide has a hole shape similar to the shape of the rolled material. 4. The inlet roller guide for angle steel according to claim 1, wherein the lower guide roller has a surface shape that is similar to the shape of the rolled material. 5. A method according to claim 1 or 2, entry <br/> guides will have a hole shape which approximates the shape of the rolled material, the lower guide
Roller entrance roller guide for Angle iron characterized by have a surface shape similar to the shape of the rolled material. 6. The method of claim 1, 2, 3, 4 or 5, a saddle which is movable in a direction intersecting the guide box and the pass line, the horizontal movement device for moving the guide box And an inlet roller guide for angle steel, comprising: a fixing device for fixing the movement of the guide box.