KR100973900B1 - Apparatus for clampping chock of wire rod milling roll - Google Patents

Abstract

A clamp member capable of horizontal fixation to a choke arm and a clamp opening and closing means for driving the same provide a wire rod roll choke clamp device that improves product quality while reducing the workload of an operator.

The wire rod roll choke clamp apparatus which concerns on this invention is a clamp member which fixes and supports the choke arm which protruded to the side of a roll choke; And clamp opening and closing means for driving the clamp member to allow horizontal fixation of the choke arm.

According to the present invention, while reducing the work load of the worker can lower the risk of safety accidents of the worker, it is possible to achieve the productivity improvement by shortening the working time. In addition, the clamp member is driven by the clamp opening and closing means to firmly support the choke arm, thereby preventing the center of the ball roll from the work line, thereby producing a high quality product in which the wire rod is uniformly rolled. Get

Wire rod rough rolling, ball roll, choke, choke arm, clamp member, clamp opening and closing means

Description

Wire rod milling roll {Apparatus for clampping chock of wire rod milling roll}

The present invention relates to a wire rod roll choke clamp device, and more particularly, by a clamp member which can be horizontally fixed to the choke arm and a clamp opening and closing means for driving the same, thereby improving the product productivity while reducing the workload of the operator. To a choke clamp device.

In general, the rough rolling rolls in the wire rod field form a plurality of identical ball rolls on a single roll, and move the ball rolls to the adjacent ball rolls in turn according to the wear of the ball rolls. Maintained by a roll replacement operation.

The rough rolled upper and lower ball rolls are made of the same ball shape, and the pairs of balls are formed in opposite pairs of mutually accurate positions, and the wire rod material having a diameter of 42 to 28 mm is subjected to a continuous process of repeating ellipses and rounds. (2 in FIG. 1) is produced.

Here, the wire rod is formed in the form of a ball by driving the ball roll while assembling and fixing a pair of opposing balls to the rough mill.

At this time, the ball center center between the pair of upper and lower ball roll has a very important effect on the wire rolling quality, so the ball roll fixing device of the roughing mill plays a very important role.

Typically, the ball roll is assembled by the choke of the bearing block to form a configuration that can replace the ball roll in the opening and closing side of the housing of the rough mill.

Rough rolling mill ball roll fixing device that maintains a pair of ball roll center centers from the work path line to prevent axial variability and deviation of the ball rolls during wire rolling, makes it easier to replace the ball rolls and to change the axial variability of the ball rolls. An important function of preventing it is required.

The choke clamp which fixes the conventional ball roll choke arm is provided in the both sides of the housing 3 of the roughing mill 1, as shown to FIG.

The choke clamp 10 is assembled to the clamp bracket 50 by a hinge 10a. At this time, when the choke arm 6a is seated between the clamp bracket 8 and the choke clamp 10 and the fixing bolt 9 is fastened, the choke clamp 10 is clamped by the fixing bolt 9. While tightening to (8), the choke arm 6a is fixed.

When the fixing bolt 9 is dismantled in the work of replacing the ball roll consisting of the upper ball roll 4 and the lower ball roll 5, the choke clamp 10 is rotated about the hinge 10a, and the roll roll choke arm 6a becomes a state which can be replaced from the housing 3 of the roughing mill 1. As shown in FIG.

In the choke clap device, the choke arm 6a is fixed and dismantled by the fixing bolt 9, and a spanner (not shown) requiring a large torque is used for this purpose.

It takes a lot of time to fasten / dismantle the fixing bolts 9 are used, there is a problem that the non-operating time of the roughing mill (1) increases. In addition, there is a limit that the work load of the worker increases because the replacement work using the spanner requires a direct manpower of the worker.

As an alternative, an electric pneumatic tool (not shown) may be used for the fastening / disassembly of the fixing bolt 9, and as a large force is required for fastening / disassembling the fixing bolt 9, a large-sized electric motor with a large power is required. Air vents are used. It is also a lot of time and inconvenience to install and remove the electric air having a large size of such heavy weight every time.

On the other hand, a large force acts on the axial direction of the ball roll during the wire rolling operation, which causes fine loosening of the fixing bolt 9, so that the center of the ball roll can be finely separated from the work line. As a result, the shape of the rolled wire rod is non-uniform, causing problems with quality.

The present invention has been made to solve the above problems, by the clamp member which can be horizontally fixed to the choke arm and the clamp opening and closing means for driving the same, while reducing the workload of the operator can improve the product quality of high quality It is an object of the present invention to provide a wire roll roll choke clamp device.

Wire rod rolling choke clamp device according to a preferred embodiment of the present invention to achieve the above object, the clamp member for holding and supporting the choke arm protruding to the side of the roll choke; And clamp opening and closing means for driving the clamp member to allow horizontal fixation of the choke arm. It includes.

At this time, one end of the clamp member has a hinge structure, the clamp opening and closing means is connected to the other end of the clamp member, it is preferable to rotate the clamp member.

In addition, the clamp bracket is installed on one side of the rolling mill housing for supporting the roll choke, one end of the clamp member is connected to the clap bracket, so that the choke arm is fixed in the horizontal direction, the clamp member and the clamp bracket It is desirable to enclose the choke arm together.

In addition, the clamp opening and closing means, the motor having a worm screw shaft; A worm gear engaged with the worm screw shaft of the motor and having a first screw line formed at an inner circumference thereof; And a rod formed at an outer circumference thereof with a second screw line engaged with the first screw line of the worm gear, and having a distal end connected to the other end of the clamp member and capable of reciprocating toward the other end side of the clamp member. Do.

The wire rod roll choke clamp device according to the present invention includes a clamp member for holding and supporting the choke arm protruding to the side of the roll choke, and clamp opening and closing means for driving the clamp member to allow horizontal fixing to the choke arm. By doing so, it is possible to fix the choke arm of the rough rolling machine without the need for the direct manpower of the operator and without the use of an electric air hole for fastening / unlocking the heavy weight bolt. This can reduce the worker's workload while lowering the risk of worker's safety accidents, and can further improve productivity due to the reduction of working time.

In addition, the clamp member is driven by the clamp opening and closing means to firmly support the choke arm, thereby preventing the center of the ball roll from leaving the work line, thereby producing a high quality product in which the wire rod is uniformly rolled.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

Figure 3 is a plan view showing a pressure regulator configured with a choke clamp device according to a preferred embodiment of the present invention, Figure 4 is a horizontal cross-sectional view showing the choke clamp device in the roughing mill of Figure 3, Figure 5 is a line BB of Figure 4 According to the cross-sectional view.

Referring to the drawings, the choke clamp device of the present invention is a clamp member for fixing and supporting the choke arm 42a protruding to the side of the roll choke 42 from the roll choke 42 supporting the ball roll 40 ( 60, and a clamp opening and closing means for driving the clamp member 60.

At this time, one end of the clamp member 60 is connected to the clamp bracket 50 by a hinge structure 62. Here, the clamp bracket 50 is installed on one side of the rolling mill housing 20 supporting the roll chocks 42.

Such a clamp member 60 has a structure surrounding the choke arm 42a together with the clamp bracket 50 in order to fix the choke arm 42a in the horizontal direction. That is, the clamp member 60 surrounds the opposite side of the housing 20 at the choke arm 42a, and the clamp bracket 50 forms the structure surrounding the side of the housing 20 side at the choke arm 42a.

Of course, the clamp member 60 is not limited to the structure for fixing the choke arm 42a together with the clamp bracket 50. As an example, the clamp member 60 may be directly installed in the rolling mill housing 20 without a structure called a clamp bracket 50 to fix the choke arm 42a together with the rolling mill housing 20.

In addition, the clamp opening and closing means (80) is a motor (84) having a worm screw shaft (84a), a worm gear (86) interlocking with the worm screw shaft (84a) of the motor 84, and the worm gear (86) It has a rod 88 to interlock.

Here, the clamp opening and closing means 80, a protrusion (not shown) of the clamp bracket 50 is inserted into one end of the opening and closing means body 82 to form a rotatable through hole 82a, and a rod therein. The rod hole 82b in which the 88 is disposed is formed. The first slide member 95 is mounted on the inner circumference of the through hole 82a.

In addition, the worm gear 86 rotates in engagement with the worm screw shaft 84a of the tooth motor 84 formed on the outer circumferential surface thereof. In addition, the worm gear 86 has a first thread line 86a formed at its inner circumference, and the rod 88 has a second screw engaged with the first thread line 86a of the worm gear 86 at its outer circumference. Line 88a is formed.

In this way, the first screw line 86a of the worm gear 86 is engaged with the second screw line 88a of the rod 88, so that the rod 88 moves linearly when the worm gear 86 rotates.

As a result, as the worm screw shaft 84a of the motor 84 rotates, the worm gear 86 rotates and at the same time the rod 88 screwed with the worm linearly moves.

On the other hand, the rod 88 is configured so that the front end portion is connected to the other end of the clamp member 60, the reciprocating movement to the other end side of the clamp member 60.

Here, the rod 88 has a connecting portion 89 having a through hole 89a to be connected to the other end of the clamp member 60 at the distal end thereof, and the through hole at the other end of the clamp member 60. 89a) is provided with a protrusion (not shown) formed to be fastened. The through hole 89a is rotatably fitted to the other end of the clamp member 60 to correspond to the through hole. At this time, the second slide member 96 is mounted on the inner circumference of the through hole 89a.

As a result, the clamp opening and closing means 80 serves to drive the clamp member 60 to enable horizontal fixation to the choke arm 42a.

Then, the operation of the choke clamp device according to the preferred embodiment of the present invention will be described with reference to FIGS. 6 and 7.

First, the motor 84 of the clamp opening and closing means 80 is operated to rotate the worm screw shaft 84a which is a driving shaft, and the worm gear 86 which meshes with the worm screw shaft 84a rotates in association with this.

Then, the rod 88 screwed into the inner hole of the worm gear 86 is interlocked to reciprocate relative to the clamp member 60 side, whereby the clamp member 60 fastened to the distal end of the rod 88 By rotating, the choke arm 42a is horizontally fixed or supported.

At this time, when the rod 88 is advanced to the clamp member 60 side, the clamp member 60 is rotated to the choke arm 42a side of the other end connected to the rod 88, the outer side of the choke arm 42a In close proximity, the choke arm 42a is structured to support the outer side of the choke arm 42a. Here, the distance D1 between the clamp bracket 50 and the clamp member 60 is slightly longer than the length D of the diameter of the choke arm 42a or the choke arm 42a combined with the thickness of the liner. Gap is formed. This gap is for the choke arm 42a to be easily movable in the vertical direction. The vertical movement of the choke arm 42a is made by a motor that moves the roll choke 42 up and down, as shown in FIG.

In addition, when the rod 88 is reversed to the opposite side of the clamp member 60, the clamp is rotated from the outer side of the choke arm 42a by the other end connected to the rod 88 to the opposite side of the choke arm 42a. The structure is opened so that the choke arm 42a can move outward.

For this reason, the present invention does not require the direct manpower of the operator and secures the choke arm 42a of the roughing mill 1 without using an electric air hole for fastening / releasing a heavy fixed bolt (9 in FIG. 2). You can. This can reduce the worker's workload while lowering the risk of worker's safety accidents, and can further improve productivity due to the reduction of working time.

In addition, the clamp member 60 is driven by the clamp opening and closing means 80 to firmly support the choke arm 42a, thereby preventing the center of the ball roll from leaving the work line so that the wire rod is uniformly rolled. Produce high quality products.

1 is a front view showing that the wire rod is rolled in the rough mill.

Figure 2 is a side view of the roughing mill of Figure 1, and a cross-sectional view showing a choke clamp device according to the prior art installed in the roughing mill.

3 is a plan view showing a pressure regulator configured with a choke clamp device according to a preferred embodiment of the present invention.

4 is a horizontal cross-sectional view showing the choke clamp device in the roughing mill of FIG.

5 is a cross-sectional view taken along line B-B of FIG. 4.

6 and 7 are views showing that the choke clamp device is operated in the roughing mill of FIG.

<Explanation of symbols for the main parts of the drawings>

1: rough rolling mill 2: wire rod material

20: housing 40: ball furnace

42: roll choke 42a: choke arm

50: clamp bracket 60: clamp member

62: hinge structure 80: clamp opening and closing means

82: body 84: motor

84a: Worm screw shaft 86: Worm gear

86a: first thread line 88a: second thread line

89: connecting portion 95: first slide member

96: second slide member

Claims (4)

A clamp member for holding and supporting the choke arm protruding to the side of the roll choke, and having one end hinged; And Clamp opening and closing means for rotating the clamp member to allow horizontal fixation of the choke arm; Including; The clamp opening and closing means A motor with a worm screw shaft; A worm gear engaged with the worm screw shaft of the motor and having a first screw line formed at an inner circumference thereof; And A rod formed on an outer circumference thereof with a second thread line engaged with the first thread line of the worm gear, and having a distal end connected to the other end of the clamp member and capable of reciprocating toward the other end side of the clamp member; Wire rod roll roll choke clamp device comprising a. delete The method of claim 1, A clamp bracket is installed at one side of the rolling mill housing for supporting the roll choke, and one end of the clamp member is connected to the clap bracket. And the clamp member encloses the choke arm together with the clamp bracket so that the choke arm is fixed in the horizontal direction. delete

Images