JPH0357281Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a disc shoe of an inclined rolling mill used for manufacturing seamless metal tubes.

[Prior Art] In general, a fifth step is used in the process of perforating seamless metal pipes.
As shown in the figure, two
An inclined rolling mill such as a piercer or an elongator is used, in which two rolling rolls 1 are arranged at an angle at a constant advance angle, and a disc shovel 2 is arranged between the two rolling rolls 1. In Fig. 5, 3 is the plug, 4 is the material, 5 is the shaft of the disc shoe 2,
6 is a bearing, and 7 is a drive motor.

The disc shoe 2 prevents the material 4 from escaping to the side of the rolling area formed by both rolling rolls 1 during rolling. Here, disk show 2
Since the outer periphery of is formed on an arc corresponding to the outer shape of the material 4, it is necessary to replace it every time the outer diameter of the material 4 changes. Furthermore, since the outer circumferential portion of the disk shoe 2 is constantly in contact with the high-temperature material 4, it may wear out or be damaged by long-term use, so it is necessary to replace it with a new one as necessary.

Therefore, in the past, the Japanese Patent Publication No. 61-2442
Methods for replacing the disk drive 2 have been proposed as described in Japanese Patent Laid-open No. 61-2443 and Japanese Patent Application Laid-Open No. 59-1008.

[Problems to be solved by the invention] However, the above-mentioned conventional disk drive
It is supported by a rotating beam that rotates relative to the mill body, and can be replaced as a whole by being attached to and removed from the mill body by the rotating movement of the rotating beam.

Therefore, when replacing the conventional disk shoe described above, a large-scale attachment/detachment device and a replacement work space (including a turning space for the turning beam) are required.

The object of the present invention is to enable the disk shoe to be easily replaced without requiring a large-scale attachment/detachment device and a replacement work space.

[Means for Solving the Problems] The present invention provides an inclined rolling mill in which a plurality of Schullings, which are divided into a plurality of parts along the circumferential direction of the outer peripheral part, can be attached and detached from the outer peripheral part of the disc-shaped disc main body. It is a disc shoe, and the number of divisions of the shoe ring is three or more, and the back side of each shoe ring has a locking convex portion along the arc direction of the shoe ring, and a lock located on one end side of the locking convex portion. a recess;
An engagement receiving part located on the other end side of the engagement protrusion is provided, and the engagement protrusion of each Schüring is provided at each position in the circumferential direction of the outer periphery of the disk body where each Schüring is to be attached. A locking recess into which the locking recess is fitted, a locking convex portion into which the locking recess of each Schuling is locked, and a clamp lever that engages with the engaging receiving portion of each Schuling are provided. A spring biasing the clamp lever in the direction of locking the clamp lever with the engagement receiver is provided at a position corresponding to each position where each Shuring is to be attached, and a spring biasing the clamp lever in the direction of locking the clamp lever with the engagement receiver. A fluid pressure device for driving in the direction is provided.

[Function] According to the present invention, there are the following effects.

The shul ring is divided into three or more pieces along the circumferential direction of the disk body. Therefore, when the outer diameter of the material changes, or when the shoe ring becomes worn or damaged, it is sufficient to replace each divided relatively small and lightweight shoe ring, making it possible to easily replace the disk shoe.

The Schulling is constructed by fitting the engaging protrusion into the engaging concave part of the disc body, engaging the engaging concave part with the engaging convex part of the disc body, and engaging the engaging receiving part with the clamp lever. As a result, it can be securely and easily fixed in each of the width direction, circumferential direction, and radial direction of the disk body.

The clamp lever is engaged with the engagement receiving portion of the Schulling by a spring, and is released from the engagement by a fluid pressure device. Therefore, the space required for clamping work by the clamp lever is small and the workability is good.

As described above, the disk shoe can be easily replaced without requiring a large-scale attachment/detachment device and a replacement work space.

[Example] Fig. 1 is a front view showing the disk shoe of the present invention, Fig. 2 is a side view of Fig. 1, Fig. 3 is an enlarged front view of the part shown in Fig. 1, and Fig. 4 is a front view showing the portion shown in Fig. 1. FIG. 4 is a sectional view taken along the - line in FIG. 3;

The disk show 10 includes a disk-shaped disk body 1
Three or more Schullings 12 are each removably attached to the outer periphery of the Shuring 1. Each Schulling 12 is mutually divided along the circumferential direction of the outer periphery of the disk body 11. Each Schulling 12 is continuous in the circumferential direction when attached to the disk body 11, and has an arcuate guide surface 13 on its outer periphery. The guide surface 13 is formed of an arcuate surface corresponding to the outer shape of the material to be rolled by the inclined rolling mill in which the disc shovel 10 is used.

Each Schulling 12 for the disk body 11
The attachment/detachment structure is as shown in FIGS. 3 and 4.

A locking recess 14 having a length l and a width w is formed at each position in the circumferential direction of the outer periphery of the disk body 11 where each Schulling 12 is to be attached. A section 15 is provided. In addition, at positions corresponding to the positions where the respective Schullings 12 are to be attached inside the disk body 11, there is a clamp lever 17 which is swingable via a support shaft 16, and a clamp cylinder connected to the operating end of the clamp lever 17. Each of the 18 is built-in. The clamp lever 17 includes an engaging claw portion 19. The clamp cylinder 18 includes a spring 20 that biases the engagement claw portion 19 of the clamp lever 17 in a locking direction, which will be described later, and a pressure chamber 21 that drives the engagement claw portion 19 of the clamp lever 17 in a counter-locking direction. It is equipped with A fluid pressure pump 2 such as a pneumatic or hydraulic pump is connected to the pressure chamber 21 of the clamp cylinder 18 via a conduit 22, a connector 23, and a conduit 24.
5 is connected, and by connecting the connector 23, it is possible to supply fluid pressure to the pressure chamber 21, and by disconnecting the connector 23, it is possible to release the fluid pressure inside the pressure chamber 21.

Each Schulling 12 has an engaging protrusion 26 formed on the back side of the guide surface 13. Attachment convex portion 26
is a locking recess 27 that can be fitted into the locking recess 14 of the disk body 11 and that locks the locking protrusion 15 of the disk body 11 and the locking claw 19 of the clamp lever 17. The receiving part 28 is provided.

That is, each Schulling 12 has its locking convex portion 26 fitted into the locking recess 14 of the disk body 11, and after its locking concave portion 27 is locked with the locking convex portion 15 of the disk body 11, the clamp cylinder The pressure fluid is discharged from the pressure chamber 21 of 18, and the spring 2
By engaging the engagement claw portion 19 of the clamp lever 17 with the engagement receiving portion 28 with an elastic force of 0,
It can be attached to a predetermined position on the outer periphery of the disk body 11. On the other hand, each Schulling 12 supplies pressure fluid to the pressure chamber 21 of the clamp cylinder 18, and the locking recess 2 of the clamp lever 17 is separated from the locking claw 19 of the clamp lever 17 from the locking recess 28.
By shifting 7 from the locking position with the locking convex portion 19 of the disk body 11, it becomes possible to remove it from the outer circumference of the disk body 11.

Next, the operation of the above embodiment will be explained.

The Schulling 12 is divided into three or more pieces along the circumferential direction of the main body of the disk 11. Therefore, when the outer diameter of the material changes, Schuring 12
In the event of wear or damage, the relatively small size, lightweight Schuling 12 is divided into individual parts.
It is sufficient to replace the disc shoe 10 easily.

The Schulling 12 fits its engagement protrusion 26 into the engagement recess 14 of the disk body 11,
By locking the locking concave portion 27 to the locking convex portion 15 of the disk body 11 and engaging the locking receiving portion 28 with the clamp lever 17, it is possible to can be securely and easily fixed to each.

The clamp lever 17 is engaged with the engagement receiving portion 28 of the Schüring 12 by the spring 20, and is released from the engagement by the clamp cylinder 18. Therefore, the space required for clamping by the clamp lever 17 is small, and the workability is good.

As described above, the disk shoe 10 can be easily replaced without requiring a large-scale attachment/detachment device and a replacement work space.

According to the present invention, when only a portion of the guide surface in the circumferential direction of the disc shoe is locally significantly worn or damaged, the wear and tear can be eliminated by replacing only a portion of the shoe ring. It also becomes possible to deal with damage.

[Effects of the Invention] As described above, according to the present invention, it is possible to easily replace the disk shoe without requiring a large-scale attachment/detachment device and a replacement work space.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the disk shoe of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a front view showing an enlarged portion of FIG. 5 is a sectional view taken along the line, and FIG. 5 is a front view showing the main parts of an inclined rolling mill equipped with a disc shovel. 10...Disc shoe, 11...Disk body, 12...School ring, 13...Guide surface,
14...Locking recess, 15...Locking protrusion, 17...
Clamp lever, 18...clamp cylinder,
19...Engagement claw portion, 20...Spring, 26...Latching convex portion, 27...Locking recess, 28...Engagement receiving portion, 3
1, 32...Mounting part, 33...Bolt.

Claims (1)

[Scope of utility model registration request] A disc shoe for an inclined rolling mill in which a plurality of Schulings divided into a plurality of Schullings along the circumferential direction of the outer periphery are detachably attached to the outer periphery of a disc-shaped disc main body, and the number of Schulling divisions is three or more. On the back side of each Schüring, there is a locking convex portion along the arc direction of the Shuring, a locking recess located at one end of the locking convex, and a locking recess located at the other end of the locking convex. At each position in the circumferential direction of the outer periphery of the disk body where each Schüring should be attached, there is an engagement recess into which the above-mentioned engagement protrusion of each Schüring fits, and A locking protrusion that is locked by the locking concave portion of and a clamp lever that engages with the engagement receiving portion of each Schulling are provided, and each of the Shurings is provided with a clamp lever that corresponds to each position inside the disk body where each Schulling is to be attached. A spring that biases the clamp lever in a locking direction with the engagement receiver and a fluid pressure device that drives the clamp lever in a direction opposite to the locking direction with the engagement receiver are provided at the position. A disc shoe for an inclined rolling mill is characterized by: