JP3876715B2 - Guide device for rolling wire - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a guide apparatus for guiding a rolled wire along a three-dimensional arc curve.
[0002]
[Prior art]
As shown in FIG. 7, the reference rolling line 12 of the rolled wire rod 11 that has passed through the heating furnace 10 includes, for example, a rough row 13 having a plurality of rolling mills, a first intermediate row 14, and a second intermediate row 15. A first line 19 for supplying the rolled wire 11 toward the poling reel 18 via the first sizing mill 16 and the second sizing mill 17 is linearly connected to the rolling line 12, and the finish rolling mill 39 or A second line 23 for supplying the rolled wire 11 toward the laying head 22 via the block mill 20 and the sizing mill 21 is connected via a change line 24 branched from the reference rolling line 12. And the rolling wire 11 rolled to the predetermined diameter via the reference | standard rolling line 12 is comprised so that it may distribute to the 1st line 19 or the 2nd line 23 according to the required product size.
[0003]
The second line 23 with respect to the reference rolling line 12 is set at a position that not only shifts in the lateral direction intersecting the reference rolling line 12 but also displaces in the height direction due to the installation space, factory layout, and the like. ing. For this reason, each connection part with the reference | standard rolling line 12 and the 2nd line 23 in the said change line 24 is formed in the shape of a three-dimensional circular arc curve, and a rolling wire rod is guide | induced by the guidance apparatus 25 arrange | positioned at each connection part. Eleven smooth guides are provided. In other words, the guide guide device 25 is configured so that the rolled wire rod 11 passes through a plurality of roller sets 27 (see FIG. 8) including a pair of free rollers 26 and 26 between the free rollers of each roller set 27. The rolling wire 11 is arranged at the top, and each time the rolled wire 11 passes through each roller set 27, the advancing direction is changed to guide it into a circular arc shape.
[0004]
[Problems to be solved by the invention]
As described above, in the roller set 27 arranged on the three-dimensional arc curve, the tip of the rolled wire 11 that has passed through the upstream roller set 27 is one of the downstream roller set 27 (outer in the radial direction of the arc curve). After being brought into contact with the free roller 26, it is guided between the rollers 26, 26. In this case, the roller itself is cracked due to the impact when the tip of the wire comes into contact with the free roller 26, or the roller 26 wears in a short period of time, and further, seizure of the bearing also occurs. It was inferior in nature. Note that the magnitude of the impact applied when the tip of the wire rod comes into contact with the free roller 26 is such that the tip of the rolled wire rod 11 that has passed through the upstream roller assembly 27 is one of the downstream roller assembly 27 as shown in FIG. A contact point B that contacts the free roller 26 and a contact line B that passes through the axis C of the free roller 26, and a reference that passes through the axes C and C of the free rollers 26 and 26 that constitute the roller set 27. In relation to the pickup angle θ formed with the line D, the larger the pickup angle θ, the greater the impact. That is, if the bending angle α (see FIG. 7) of the change line 24 with respect to the reference rolling line 12 is small, the curvature of the arc curve on which each roller set 27 is arranged becomes gentle, and the pickup angle θ can be set small. Thus, the guidance guide device 25 using the free roller 26 can also cope.
[0005]
However, if the bending angle α of the change line 24 with respect to the reference rolling line 12 has to be set large due to the factory layout or the like, the pick-up angle θ becomes large and the occurrence frequency of the above-mentioned problem increases, and the free roller In reality, the guide guide device 25 using 26 cannot smoothly guide and guide the rolled wire 11. It is possible to reduce the pickup angle θ by increasing the diameter of the free roller 26, but in this case, the roller weight increases, so that the free roller 26 is not rotated properly when guiding the wire. This causes a problem that oysters are chronically generated on the surface of the wire. Similarly, it is pointed out that the cracks generated by the burr of the rolled wire 11 adhering to the roller surface also increase.
[0006]
OBJECT OF THE INVENTION
The present invention has been proposed to suitably solve the above-described problems, and the rolled wire is always guided smoothly to prevent the occurrence of surface oysters and irritation, thereby producing a high-quality product. An object of the present invention is to provide a guide apparatus for a rolled wire rod to be obtained.
[0007]
[Means for Solving the Problems]
In order to overcome the above-described problems and achieve the intended purpose, the guide apparatus for rolled wire rod according to the present invention is:
Arranged at each line connecting portion in the change line connecting the reference rolling line and the second line set not only in the lateral direction intersecting the reference rolling line but also displaced in the height direction. A guide device for guiding a rolled wire along a three-dimensional arc curve,
A roller set consisting of a pair of rotating rollers that can be guided with the rolled wire rod interposed therebetween, and a motor that independently rotates and drives each of the pair of rotating rollers is assembled into a mounting base and unitized.
Multiple roller set is said at a predetermined arrangement pitch on the arc-shaped curved line, it is removably arranged over the mount relative to the base,
In each roller set, the axis of both rotating rollers is set to align on the radiation extending radially from the center point of the arc curve,
Further, the contact point where the tip of the rolled wire rod that has passed between the two rotating rollers in the upstream roller set contacts the rotating roller located on the radially outer side of the circular arc curve in the downstream roller set, and the axis of the rotating roller The arrangement pitch of each roller set and the diameter of the rotating roller are set so that the pickup angle formed by the abutting line passing through and the radiation passing through the axis of both rotating rollers constituting the roller set is 20 ° or less. It is characterized by being set.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, a preferred embodiment of the rolled wire rod guiding and guiding apparatus according to the present invention will be described below with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the same or the same kind of member and site | part already mentioned in the prior art demonstrated with reference to FIG. 7 and FIG. 8, and detailed description shall be abbreviate | omitted.
[0009]
FIG. 1 shows a schematic configuration of the guidance and guidance device according to the present embodiment. The guidance and guidance devices 28 and 29 have a change line 24 and a reference as described in the prior art with reference to FIG. Since it is arranged at the connecting part between the rolling line 12 and the second line 23 and the structure is the object, the induction on the upstream side arranged at the connecting part between the reference rolling line 12 and the change line 24 Only the configuration of the guide device 28 will be described, and the same reference numerals are given to the same members of the downstream guide and guide device 29 arranged at the connection portion between the change line 24 and the second line 23.
[0010]
As shown in FIG. 2, the upstream guide and guide device 28 includes a plurality of roller sets 31 including a pair of rotating rollers 30 and 30 that are rotationally driven in mutually opposite directions on a base 32. Are arranged at a predetermined arrangement pitch along a three-dimensional arcuate curve S. The base 32 is configured to be movable in the horizontal left-right direction perpendicular to the reference rolling line 12 by forward / reverse urging of the fluid pressure cylinder 33, and the rotating rollers 30, 30 in the roller set 31 positioned on the most upstream side. The opposing wire introduction part is configured to be positioned at a connection position facing the reference rolling line 12 and a retreating position away from the reference rolling line 12, and the base 32 is positioned at the connection position so that the reference rolling line 12 travels. rolled wire rod 11 is guided to the guidance device 28. The base 32 is provided with a guide member 34 aligned with the reference rolling line 12 when positioned at the retracted position, and the rolled wire 11 is guided to the first line 19 through the guide member 34. It is configured as follows. Note that the downstream guide and guide device 29 arranged at the connection portion with the second line 23 does not need to be in contact with or separated from the second line 23, so the base 32 of the device 29 is positioned on the most downstream side. In the roller set 31, the opposing wire rod passing portions of both the rotating rollers 30, 30 are fixedly arranged at fixed positions aligned with the second line 23.
[0011]
Here, a water cooling zone 35 is provided between the upstream guide guide device 28 and the downstream guide guide device 29, and the rolled wire rod guided and guided by the guide guide device 28 so as to branch from the reference rolling line 12. 11 is cooled when passing through the water cooling zone 35.
[0012]
As shown in FIG. 3, the rotating rollers 30 and 30 constituting each roller set 31 are each configured to be driven to rotate independently by a motor 36. It is set so as to be slightly faster than the traveling speed of the rolled wire 11 in the rolling line 12, and is configured to smoothly guide the rolled wire 11 introduced between the rotating rollers 30 and 30 toward the downstream side. In addition, the space | interval of the opposing part (wire material introducing | transducing part) through which the rolling wire 11 passes in both the rotation rollers 30 and 30 is set largely with respect to the diameter of the rolled wire 11 (wire material diameter + about 5 mm). The rotating rollers 30 and 30 and the motors 36 and 36 constituting each roller set 31 are assembled into a unit by being attached to a mounting base 37, and the roller set 31 is attached to the base 32 via the mounting base 37. Is configured to be detachable. In FIG. 2, reference numeral 38 denotes a guide member that is disposed between the roller set 31 and the roller set 31 to guide the rolled wire 11.
[0013]
Next, the positional relationship of the roller sets 31 in the guide guide device 28 will be described with reference to FIG. As shown in this figure, the reference rolling line 12 in the case of the X-axis, the inclination angle theta ₁ from the reference point O set on the X-axis, and the point F on the downstream side in the elevation theta ₂ of the distance L In the XYZ plane where the upstream E point on the X axis at a distance L from the reference point O exists, the side opposite to the reference point O across the line segment connecting the E point and the F point The center point G of the arc of radius R passing through the points E and F is set. Each roller set 31 has a center position between the axes of the rotating rollers 30 and 30 facing the arcuate curve S with respect to the arcuate curve S having a radius R centered on the center point G. , 30 axial centers C ₁ , C ₁ are arranged in a posture aligned with the radiation H extending radially from the center point G. The guide apparatus 28 according to the embodiment is suitable for guiding and guiding the rolled wire 11 along a three-dimensional circular arc S set with an inclination angle θ ₁ ≧ 15 ° and an elevation angle θ ₂ ≧ 5 °. used. The radius R of the arcuate curve S is changed according to the bending angle α of the change line 24 with respect to the reference rolling line 12.
[0014]
Further, the tip of the rolled wire rod 11 that has passed between the two rotating rollers 30, 30 in the upstream roller set 31 is in contact with the rotating roller 30 positioned on the radially outer side of the circular arc curve S in the downstream roller set 31. Pickup angle formed between the contact line B and the contact line B passing through the axis C ₁ of the rotating roller 30 and the radiation H passing through the axes C ₁ and C ₁ of the rotating rollers 30 and 30 constituting the roller set 31. The arrangement pitch of the roller groups 31 (the distance between the opposed centers of the rotary rollers 30 and 30) and the diameter of the rotary roller 30 so that θ (see FIG. 8) is 20 ° or less, preferably 15 ° or less. (Roller diameter) is set. Incidentally, when the diameter of the rotating roller 30 is 285 mm, the arrangement pitch of the roller sets 31 is 360 mm in order to set the pickup angle θ to 15 ° or less.
[0015]
[Effect of the embodiment]
Next, the operation of the guidance apparatus according to the embodiment configured as described above will be described.
[0016]
In a state where the upstream guide guide device 28 is positioned at the retracted position, the rolled wire rod 11 traveling on the reference rolling line 12 is first through the guide member 34 disposed on the base 32. Guided by a line 19, the rolled wire 11 is rolled to a predetermined diameter via the first sizing mill 16 and the second sizing mill 17, and then supplied to the polling reel 18.
[0017]
Next, when changing the product dimensions, the upstream guide device 28 is positioned at the connection position, and the guide device 28 is connected to the reference rolling line 12. In this case, the rolled wire rod 11 traveling on the reference rolling line 12 is guided and guided by the roller sets 31 of the guidance guide device 28 and travels downstream along the three-dimensional arc curve S, and enters the water cooling zone 35. Led. Then, the rolled wire rod 11 that has passed through the water cooling zone 35 is guided and guided by each roller set 31 of the downstream guide guide device 29 and travels downstream along the three-dimensional arc curve S, and the second line 23. The rolled wire 11 is supplied to the laying head 22 after being rolled to a predetermined diameter via the block mill 20 and the sizing mill 21.
[0018]
Since the pick-up angle θ when the tip of the rolled wire 11 guided and guided by each roller set 31 abuts the rotating roller 30 is set to 20 ° or less as described above, the impact applied to the rotating roller 30. The force can be kept small, and the durability of the roller 30 can be improved. Further, since both the rotating rollers 30 and 30 are rotationally driven at a peripheral speed that follows the traveling speed of the rolled wire 11, the rolled wire 11 is always guided smoothly to cause oysters and irritation on the surface. It can prevent and can produce a high quality product.
[0019]
Here, when the bending angle α of the change line 24 with respect to the reference rolling line 12 has to be set large due to factory layout or the like, the pickup angle θ is set to 20 ° or less by increasing the diameter of the rotating roller 30. It is possible to suppress it. Even if the diameter of the rotating roller 30 is increased in this way, the roller 30 is actively driven by the motor 36, so that the roller 30 does not cause rotation failure, and the rolling wire 11 is always guided smoothly. can do. In addition, since the bending angle α can be set large, the extension length of the change line 24 can be set short, whereby the entire rolling line can be shortened.
[0020]
In the embodiment, each rotary roller 30 is independently rotated by a motor 36. Therefore, if any motor 36 fails, the brake of the motor 36 is released and the rotary roller 30 rotates freely. It can cope by making it possible. Since each roller set 31 is unitized and detachable from the base 32, replacement work in the event of a failure or the like can be performed in a short time, and loss time associated with replacement can be reduced. obtain.
[0021]
[Experiment 1]
A conventional example in which a guide apparatus using a free roller having a roller diameter of 285 mm is arranged at the connecting portion of the change line in which the bending angle with respect to the reference rolling line is set to 25 °, and a rotating roller that is driven to rotate with the same diameter are used. FIG. 5 shows an index of the invention example when the conventional example is set to 100 with respect to the generation of oysters generated by passing through each device in the invention example in which the guide device is arranged. FIG. 6 shows an index of the invention example in the case where the conventional example is set to 100 with respect to the occurrence of irritation caused by passing through both the guiding and guiding devices. In addition, regarding the occurrence of cracks, data of a comparative example using a free roller having a roller diameter of 70 mm are also shown.
[0022]
As can be seen from FIG. 5, it was confirmed that the generation of oysters can be remarkably reduced by using a positively driven rotating roller if the roller diameter is the same. Further, as can be seen from FIG. 6, even with a guide guide device using a free roller, it is possible to reduce the occurrence of irritation by reducing the roller diameter as in the comparative example, but it is still considerable. Irritation has occurred. On the other hand, it has been confirmed that the occurrence of cracks can be completely prevented by using a rotary roller that is actively driven as in the inventive example.
[0023]
In the embodiment, each rotating roller constituting the roller set is independently rotated by a motor, but a configuration in which a pair of rotating rollers are rotated in opposite directions by a single motor may be employed. Further, the number of roller sets constituting the guide apparatus is not limited to the number of embodiments, and is appropriately set according to the arrangement pitch of the roller sets, the roller diameter, and the like. Furthermore, you may comprise so that the space | interval of a pair of rotating roller can be adjusted.
[0024]
【The invention's effect】
As described above, according to the guide apparatus for rolled wire rods according to the present invention, the rotating rollers constituting each roller set are driven to rotate. Therefore, the rollers always rotate smoothly, and the rolled wire rods smoothly. Guided guidance can be provided, and the production of high quality products can be achieved by suppressing or completely eliminating oysters and irritation. Further, by setting the pick-up angle when the tip of the rolled wire comes into contact with the rotating roller to 20 ° or less, the impact at the time of contact can be reduced, and the durability of the roller can be improved. Since each rotary roller is configured to be driven to rotate independently by a motor, if any motor fails, it can be easily handled by replacing or repairing only the motor.
In addition, since each roller set is unitized and configured to be detachable from the base, replacement work in the event of a failure or the like can be performed in a short time, and loss time associated with replacement can be reduced.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing a state in which a guide device according to an embodiment of the present invention is arranged at both connection portions of a change line.
FIG. 2 is a plan view showing an upstream guide apparatus according to the embodiment.
FIG. 3 is a front view showing a roller set according to an embodiment.
FIG. 4 is an explanatory diagram illustrating an arrangement relationship of each roller set of the guide guide device according to the embodiment.
FIG. 5 is a graph showing the results of evaluating the prevention of oyster wrinkles according to Experimental Example 1;
6 is a graph showing a result of evaluating prevention of occurrence of irritation caused by Experiment 2. FIG.
FIG. 7 is a schematic explanatory diagram showing a configuration in which a first line and a second line are connected to a reference rolling line.
FIG. 8 is an explanatory diagram showing a pickup angle at which the tip of the rolled wire comes into contact with the free roller.
[Explanation of symbols]
11 axis G center point H radiation S arcuate curve θ pickup angle of rolled wire rod 30 rotates roller 31 roller group 36 motor A contact point B line of abutment C ₁ rotating roller

Claims (2)

A reference rolling line (12), the reference rolling line (12) and not only shifted in the transverse direction crossing the second line (23) connecting the change line is set at a position displaced in the height direction ( 24) is a guide device that is arranged at each connection portion with each line (12, 23) and guides the rolled wire (11) along a three-dimensional arc curve (S),
Wherein a pair of rotating rollers capable of guiding across the rolled wire rod (11) (30, 30), from a motor (36, 36) for each of the independently driven to rotate the pair of rotary rollers (30, 30) The roller assembly (31) is assembled to the mounting base (37) and unitized.
Multiple roller pairs (31), wherein a circular arc curve (S) on the predetermined arrangement pitch, is detachably arranged via mount (37) relative to the base (32),
In each roller set (31), the axial centers (C ₁ , C ₁ ) of both rotating rollers (30, 30) are on radiation (H) extending radially from the center point (G) of the circular arc curve (S). Is set to align with
In addition, the tip of the rolled wire rod (11) that has passed between the rotating rollers (30, 30) in the upstream roller assembly (31) is outside the arcuate curve (S) in the downstream roller assembly (31). A contact point (A) that is in contact with the rotating roller (30) that is positioned, a contact line (B) that passes through the axis (C ₁ ) of the rotating roller (31), and both of the rollers constituting the roller set (31). Arrangement of the roller sets (31) so that the pickup angle (θ) formed with the radiation (H) passing through the shaft centers (C ₁ , C ₁ ) of the rotating rollers (30, 30) is 20 ° or less. An apparatus for guiding and guiding a rolled wire, wherein the pitch and the diameter of the rotating roller (30) are set. The base (32) is moved in the horizontal left-right direction perpendicular to the reference rolling line (12) by forward / reverse biasing of the fluid pressure cylinder (33) ,
The opposing wire rod introduction portions of the rotating rollers (30, 30) in the roller set (31) located on the most upstream side in the base (32) are positioned at the connection positions facing the reference rolling line (12) . At that time, the rolled wire rod (11) traveling on the reference rolling line (12) is guided between the rotating rollers (30, 30) and guided to the change line (24) ,
The base (32), when positioned at the retracted position apart from the reference rolling line (12), rolled wire rod running the reference rolling line (12) (11), the reference rolling line (12) The guide apparatus for rolled wire rod according to claim 1, wherein the guide apparatus is guided by a first line (19) linearly connected to the wire.

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