JP3637738B2 - Turning roller for steel pipe rotary quenching equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a turning roller for a steel pipe rotary quenching apparatus, and more specifically, a plurality of turning rollers attached to a long rotating shaft parallel to the axial direction of the steel pipe at regular intervals, It relates to the modification of the mounting structure.
[0002]
[Prior art]
In order to impart the material properties desired by the user to the seamless steel pipe or the like, a heat treatment such as quenching may be performed in the final manufacturing process. As one of the quenching apparatuses, there is an apparatus that puts a steel pipe into a water tank while rotating it, sprays water sprayed from a nozzle onto the inner and outer surfaces of the steel pipe, and rapidly cools the steel pipe. Therefore, this apparatus requires a mechanism for supporting and rotating the steel pipe, and a turning roller is used.
[0003]
As shown in FIG. 2, each of the turning rollers is parallel to the axial direction of a steel pipe (not shown) to be quenched, and has two long shafts (hereinafter referred to as a rotating shaft 2). A large number of roller main bodies 3 are attached at regular intervals so that the steel pipe 1 is supported on the roller main body (hereinafter simply referred to as roller 3), and the steel pipe 1 is also rotated by rotating the shaft 2. It is a thing. In addition, the reason for rotating is for cooling the whole surface of the steel pipe 1 uniformly.
[0004]
By the way, the object to be processed by this rotary quenching apparatus is not only a pipe end having a flat end like a normal steel pipe 1 but also a so-called up-set pipe 4 which is simply expanded. When the front and rear ends of the up-set tube 4 are positioned on the roller 3, as shown in FIG. 3, the up-set tube 4 is pushed by a separately provided holding roller 5 (pinch roller), and the length of the up-set tube 4 is increased. There is a problem that some bending occurs in the direction. In order to prevent this bending, the position of the roller 3 on the rotating shaft 2 is changed before switching from the plain end pipe to the up set pipe 4 or changing the size of the up set pipe 4. However, it is necessary to prevent the expanded portion at the front and rear ends of the up-set tube 4 from getting on the roller 3.
[0005]
However, conventionally, as shown in FIG. 4, the engaging portion of the roller 3 to the rotating shaft 2 is fixed to a stopper member 7 embedded in a sliding key 6 provided along the shaft 2 with a bolt 8. there were. In actual operation, the position change work of the roller 3 is performed on the water, and the work place is also inferior, which requires 40 times / month × 20 minutes / time or more, which is a factor that reduces the productivity of the steel pipe. It became one of.
[0006]
[Problems to be solved by the invention]
In view of such circumstances, an object of the present invention is to provide a turning roller for a rotary quenching device for a steel pipe that can quickly change the position of the turning roller even if the type and size of the steel pipe are changed during quenching. Yes.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the inventor diligently worked on the development of a simple attachment means that can be operated quickly even in water, and the result was completed as the present invention.
That is, the present invention provides a turning roller for a rotary hardening device that is externally fitted to a long rotating shaft and is axially positioned by a hole provided in the sliding key, and is provided with an interval on the upper surface of the sliding key. A turning roller for a rotary quenching device for a steel pipe, comprising: a pin for locking in a hole; means for urging the pin in the locking direction; and lift-up means.
[0008]
According to the present invention, the urging means is a coil spring, or the lift-up means is a long hole provided in the pin and a cotter inserted into the pin. It is a turning roller for quenching equipment.
According to the present invention, since the position of the roller can be easily moved along the rotation axis, the time required to move the position of the roller can be greatly shortened compared to the prior art. As a result, the productivity of the steel pipe is improved.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 2, the roller 3 is formed by a roller body 3 that is externally fitted to a long rotating shaft 2 and a boss portion 9 that is integrated therewith. The roller 3 can move along the rotary shaft 2, moves in accordance with the size of the steel pipe 1 to be quenched, and rotates by a locking means incorporated in the boss portion 9. Locked to the shaft 2. Conventionally, this locking means is to fix the bolt 8 to the stop member 7 fitted in the slide key 6 provided on the rotating shaft 2 via the bracket 10 provided on the boss portion 9.
[0010]
In the present invention, the bolt 8 stop is eliminated, and as shown in FIG. 2, a space is provided on the upper surface of the sliding key 6 to provide a hole 11 and a V groove 12 used for positioning the roller, as shown in FIG. Further, a pin 13 that can be inserted and removed is inserted into the hole 11 and locked. Any means can be used for inserting / removing the pin 13 (hereinafter referred to as lift-up means). However, in the present invention, as shown in FIG. 14) and the cotter 15 is preferably taken in and out. This is because it can be operated with one touch. The pin 13 is urged by a coil spring 17 whose upper portion is held by a nut 16 so that the pin 13 cannot be easily removed from the hole 11 when locked.
[0011]
Therefore, according to the present invention, when there is an instruction to change the size of the steel pipe 1, the operator inserts the cotter 15 into the long hole 14 at the top of the pin 13 with one touch, so that the pin 13 is removed from the hole 11 of the sliding key 6. The roller 3 can be moved. The roller 3 can be positioned and fixed simply by aligning the widthwise end of the roller 3 with one of the desired V-grooves 12 carved in the sliding key 6 and again pulling out the cotter 15 from the long hole 14 of the pin 13. It becomes like this. In addition, a stopper pin (not shown) is separately provided on the cotter 15 so that the cotter 15 does not enter the elongated hole 14 of the pin 13 and the pin 13 is deformed and the coil spring 17 is not damaged. It is preferable to set up vertically.
[0012]
【Example】
A so-called up-set process was applied to the carbon steel seamless steel pipe to produce a large number of up-set pipes 4 of various sizes. These up-set pipes 4 were quenched with a rotary quenching apparatus. At that time, the comparison operation was performed between the case where the turning roller according to the present invention was adopted and the conventional case.
[0013]
As a result, when the turning roller according to the present invention was used, the productivity was improved, which was 1% higher than when the conventional roller 3 was used. The reason is that the up-set pipe 4 was resized 40 times, but the adoption of the roller of the present invention reduced the time by 10 minutes per size change.
[0014]
【The invention's effect】
As described above, according to the present invention, the roller position can be moved with one touch, and the steel pipe to be hardened is changed from a plain end pipe to an up set pipe or from an up set pipe to another size. The position of the turning roller along the rotation axis can be changed easily and quickly in the water even when the up-set pipe is switched. As a result, the interruption of the steel pipe production due to the change of the roller position has been significantly shortened, and the productivity of the steel pipe has been improved.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a locking portion of a turning roller according to the present invention to a rotating shaft.
FIG. 2 is a plan view showing a positional relationship between a rotating shaft and a turning roller.
FIG. 3 is a diagram showing problems at the time of quenching up-set pipes.
FIG. 4 is a longitudinal sectional view showing a conventional roller locking means for a rotating shaft.
[Explanation of symbols]
1 Steel pipe 2 Rotating shaft 3 Roller body (roller)
4 Up-set tube 5 Retaining roller (Pinch roller)
6 Sliding key 7 Stopping member 8 Bolt 9 Boss portion 10 Bracket 11 Hole 12 V groove 13 Pin 14 Long hole 15 Cotter 16 Nut 17 Coil spring

Claims (3)

In a turning roller for a rotary quenching device that is externally fitted to a long rotary shaft and axially positioned by a hole provided in a sliding key,
Rotating and quenching a steel pipe, comprising: a pin that engages with the hole provided at an interval on the upper surface of the sliding key; means for urging the pin in the engaging direction; and lift-up means. Turning roller for equipment. 2. A turning roller for a steel pipe rotary quenching apparatus according to claim 1, wherein said biasing means is a coil spring. The turning roller for a steel pipe rotary quenching apparatus according to claim 1 or 2, wherein the lift-up means is a long hole provided in the pin and a cotter inserted into the slot.

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