KR200194333Y1 - Devie for clamping the chock of roll - Google Patents

Abstract

The present invention relates to a clamp that combines a rolling roll and choke, and more particularly, to a roll choke clamping device that can shorten the working time by preventing accidents and abnormal access occurring during operation and simplifying the work.

The present invention is a clamping device for coupling the choke (6) to the right and left neck portions (8) of the roll (5), it is possible to slide the push fastener 11 to the neck portion (8) of the roll (5) The press passage 15 is formed in the roll axis direction so that the screw hole 11a and the tip of the push fastener 11 are screwed together, and the screw shaft 12 fixed to the fixing nut 13 is provided. A stopper which communicates with the pressing passage 15 and penetrates the tightening passage 23 in the direction perpendicular to the roll shaft so that the upper and lower clamps 21 and 22 can slide. A roll choke clamping device comprising upper and lower spring members 25 and 26 is formed between the upper and lower clamps 21 and 22 having the long holes 21a and 22a on which the ends of the 24 are formed. to provide.

The present invention can safely and quickly carry out the detachment work of the clamp, which is essential during the disassembly of the rolling rolls and the choke, safely and quickly, and improve the working environment.

Description

Roll choke clamping device {DEVIE FOR CLAMPING THE CHOCK OF ROLL}

The present invention relates to a clamp that combines a rolling roll and choke, and more particularly, to a roll choke clamping device that can shorten the working time by preventing accidents and abnormal access occurring during operation and simplifying the work.

In general, the combination of the rolling roll 5 (hereinafter referred to as a roll) 5 and the choke 6 in which the bearing 6a is embedded is used for cold rolling, as shown in FIGS. 1 and 2, to roll the choke 6. After inserting at both ends of (5), the clamp 7 having a ring shape, which is rotatable by the upper pin 3a, is placed in the groove 5a of the neck portion 8, and the lower pin ( By tightening the nut (4a) of the fixing screw (4) assembled in 3b) is coupled to both ends of the roll (5) so that it is difficult to detach the choke (6).

In FIG. 2, reference numeral 6b denotes a bearing holder for fixing the bearing 6a of the choke 6.

However, with the development of the cold rolling technology, the shape and shape of the choke 6 has been diversified and complicated, so that the clamping method combining the roll and the choke as in the prior art has only resulted in an increase in the work load of the roll maintenance worker.

The conventional problem is that the hook (9) portion of the roll (5) attached to the choke (6) by pulling and withdrawing the roll (5) to a mill stand using a roll change car (roll change car) The work of disassembling and assembling (7) is very inconvenient, and the work is very inconvenient, and when the disassembly or assembly of the clamp (7) is performed using a spanner, a scum buried in the choke (6) Contact with or slipping of the spanner caused finger stenosis and abnormal access.

In addition, when the neck portion 8 of the clamp 7 is mounted, there is a problem in that an accident occurs in which a finger is narrowed between the roll 5 and the clamp 7.

Therefore, the present invention has been devised in view of such a conventional problem, and its purpose is to safely and promptly perform a detachable operation of a clamp, which is essentially performed at the time of disassembling and combining the rolling roll and the choke, without causing a safety accident. It is possible to provide a roll choke clamping device that can be used and improves the working environment.

1 is an exploded perspective view of a cold rolling roll used in a general rolling process;

Figure 2 is a block diagram showing a coupling state between the roll and choke according to the prior art,

3 is an exploded perspective view showing a roll choke clamping device according to the present invention,

Figure 4 is a block diagram showing a roll choke clamping device according to the present invention.

* Explanation of symbols for the main parts of the drawings *

11 .... push fastener 12 .... screw shaft

13 .... fixing nuts 14 .... round balls

15 .... Push passage 21 .... Upper clamp

22 .... Lower clamp 23 .... Tightening passage

24 .... Stoppers 25, 26 .... Upper and lower spring members

27a, 27b ... protruding jaw 30 .... box handle

As a technical configuration for achieving the above object, the present invention,

In the clamping device for coupling the choke to the neck portion of the left and right ends of the roll,

In the neck portion of the roll, the pressing passage is formed in the roll axis direction to allow the sliding movement of the pressing fastener, and the screw hole and the tip of the pressing fastening screw are screwed, and has a screw shaft fixed to the fixing nut, and communicates with the pressing passage. The upper and lower spring members are formed between the upper and lower clamps through which a tightening passage penetrates in a direction perpendicular to the roll shaft to allow sliding movement of the upper and lower clamps, and a long hole is applied to the end of the stopper assembled to the neck portion. By providing a roll choke clamping device, characterized in that each equipped with.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is an exploded perspective view showing a roll choke clamping device according to the present invention, Figure 4 is a block diagram showing a roll choke clamping device according to the present invention, the clamping device (1) of the present invention in FIGS. As shown in the figure, the clamping operation of the choke 6 assembled to the neck portions 8 at the left and right ends of the roll 5 can be performed easily and quickly in a narrow assembly space. It consists of a pressing fastener 11, a screw shaft 12, upper and lower clamps 21 and 22, and spring members 25 and 26.

That is, the pressing fastener 11 is a moving member having a rectangular cross-sectional structure which is assembled to slide on the pressing passage 15 formed in the neck portion 8 of the roll 5 in the roll axial direction. Consists of a wedge with a sharp triangular cross section.

In addition, the screw shaft 12 is a screw nut (11a) formed in the pressing fastener 11 and the front end screwed, the fixing nut is fixed in the continuous circular hole 14 to the rear end of the pressing passage (15) It is fixed to the position (13), one end of the hexagon bolt portion 12b through the hole of the fixing nut 13 is exposed to the outside.

The screw shaft 12 protrudes from the rear end outer circumferential surface of the separation prevention jaw 12a that interferes with the fixing nut 13 so that external detachment in the pressing passage 15 is difficult.

In addition, the upper and lower clamps 21 and 22 are movable members assembled to allow sliding movement in the fastening passage 23 formed to penetrate in the perpendicular direction of the roll shaft so as to communicate with the pressing passage 15. Long holes 21a and 22a are formed on the left and right outer surfaces of the lower clamps 21 and 22, respectively, and the upper and lower clamps 21 and 22 of the upper and lower clamps are formed on the neck portion 8 of the roll 3, respectively. In order to limit the distance between shanghai, the long holes 21a, 22a are mounted with stoppers 24, each of which has a tip.

In addition, the upper and lower clamps 21 and 22 are always elastically supported to the outside so that the upper and lower portions of the upper and lower clamps 21 and 22 are always exposed than the surface of the neck 8. The upper and lower spring members 25 and 26 which one end is accommodated in each of the balls 25a and 26a and the other end is in contact with the protrusions 27a and 27b of the upper and lower clamps 21 and 22 facing each other. Equipped with.

In addition, the inner circumferential surface of the choke 6 assembled to the left and right neck portions 8 of the roll 5 is exposed to the surface of the neck portion by the elastic force of the upper and lower spring members 25 and 26, Each of the lower clamps 21 and 22 forms an insertion groove (not shown) into which a portion of the upper end is inserted.

It describes the operation of the present invention made of the configuration as described above.

First, the choke 6 coupled to the necks 8 at the left and right ends of the roll 5 is always going in the outer circumferential direction by the elastic force of the upper and lower spring members 25 and 26 in the tightening passage 23. Since the upper and lower portions of the upper and lower clamps 21 and 22 are inserted into the insertion grooves (not shown) formed on the inner circumferential surface of the choke 6, the chokes 6 are respectively detached from the neck 8. It is coupled so that it is difficult.

In this state, the work of disassembling the choke 6 is performed by using a box handle 30 having a female threaded portion at the tip, as shown in FIG. 4, and the circular hole 14 of the neck 8 is formed. Insert the female threaded portion of the box handle 30 into the hexagonal bolt portion 12b of the screw shaft 12 protruding partially, and then rotate the box handle 30 in the locked direction to rotate the screw shaft 12 in the forward direction. Turning to the fixed nut 13, the screw shaft 12 and the screw hole 11a of the pressing fastener 11 are rotated in the fixed position, so that the sliding movement in the pressing passage 15 is possible. The push fastener 11 assembled as it starts to slide forward moving toward the tightening passage 23 side.

Of course, when the plurality of handles 30 are rotated in the opposite direction to the above, when the screw shaft 12 is rotated in the reverse direction and the release direction, the pressing fastener 11 slides backward toward the circular hole 14.

Subsequently, when the wedge-shaped tip of the push fastener 11 is moved forward and enters between the protruding jaws 27a and 27b of the upper and lower clamps 21 and 22 assembled in the tightening passage 23, The protruding jaws 27a and 27b intersecting without overlapping in the passage 23 are moved in the direction of compressing the upper and lower spring members 25 and 26 by the wedge-shaped tip of the pressing fastener 11 to be advanced. Therefore, the upper and lower clamps 21 and 22 slidably assembled to the tightening passage 23 are simultaneously inserted in the inner circumferential direction. At this time, the inner circumferential movement of the upper and lower clamps 21 and 22 is performed until the stopper 24 is caught by the long holes 21a and 22a and stopped.

Accordingly, the upper and lower portions of the upper and lower clamps 21 and 22 that protrude onto the surface of the neck portion 8 by the elastic force of the upper and lower spring members 25 and 26 to fix the choke 6. Is inserted into the tightening passage 23 by the forward force of the push fastener 11 inserted between the protruding jaws 27a and 27b to release the choke 6 freed by releasing the fixing force to the choke 6. It can disassemble easily from the part 8.

According to the present invention having the above-described configuration, the upper and lower clamps slidably assembled in the tightening passage and the pressing fastener sliding in the pressing passage in accordance with the rotational direction of the screw shaft provide a fixing force to the choke. It can be easily adjusted to disassemble and assemble the choke from the neck of the roll more quickly and safely, and the work environment can be improved by eliminating the need for choke clamping close to the roll as before. Therefore, practical effects are obtained to prevent safety accidents such as stenosis which can occur during clamping.

Claims (3)

In the clamping device for coupling the choke 6 to the right and left neck portions 8 of the roll 5, In the neck portion 8 of the roll 5, a pressing passage 15 is formed in the roll axis direction to allow sliding of the pressing fastener 11, and the screw hole 11a and the tip of the pressing fastening 11 are The screw shaft 12 is screwed, and has a screw shaft 12 fixed to the fixing nut 13, and communicates with the pressing passage 15, and tightening passage to enable the slide movement of the upper and lower clamps 21, 22 ( 23 is formed in the perpendicular direction of the roll shaft, and between the upper and lower clamps 21 and 22 having the long holes 21a and 22a for holding the end of the stopper 24 assembled to the neck 8. Roll choke clamping device, characterized in that the upper and lower spring members (25, 26) is provided with each configured. The method of claim 1 The push fastener 11 is a roll choke clamping device, characterized in that is configured with a wedge-shaped tip of the pointed triangular cross-section. The method of claim 1 The screw shaft 12 is a roll choke clamping device, characterized in that protruding from the outer peripheral surface of the rear end circumferential projection (12a) interfering with the fixing nut 13 so that the external separation in the pressing passage (15) is difficult .