KR200218361Y1 - Automatic apparatus for injecting cooling water in a thick plate rolling roll - Google Patents

Abstract

The present invention relates to a thick plate roll roll cooling water automatic spraying device, and more specifically, one side is formed by supporting a plurality of bolt holes are formed and the support appearance coupled with a pair of support inner tube supported on the housing upper surface is fixed to the side of the upper coupling plate And the other side is perforated vertically, the cooling water pipe for receiving the rotary valve inside; The rotary valve is coupled to the return spring and the auxiliary valve on the outer periphery, the auxiliary valve is provided with a pin coupled to the return spring and the outside, the inside is formed with a boss and a key groove for accommodating the spline shaft, the spline A small bevel gear flanged to the lower portion of the shaft and fixed to the housing by a bearing in the middle portion; A large bevel gear with one side of the small bevel gear and a tooth coupled to the other side of the small bevel gear, the pinion being axially coupled to the housing by a bearing; One side of the pinion and the rack in the rack guide gear teeth are elastically supported downward by a spring provided on the top of the rack, coupled by a fixing pin is rotated along the outer periphery of the cam formed on the rolling roll It is configured by.

This invention devises the injection of the cooling water of the rolling rolls, which is in contact with the blade of high heat in the metal rolling process, automatically by the rotation of the rolling rolls without the operation of the electric valve operation, and the amount of the cooling water is controlled by the rotational speed of the rolling rolls. It provides the effect of improving work efficiency and productivity by minimizing the maintenance time and the worker fatigue.

Description

AUTOMATIC APPARATUS FOR INJECTING COOLING WATER IN A THICK PLATE ROLLING ROLL}

The present invention relates to a thick plate rolling roll automatic water spraying device, which prevents the rapid change of the rolling roll temperature in the rolling work of high temperature material, minimizes the use of the cooling water supply line electric valve to extend the valve life, stop the rolling roll The present invention also relates to a thick plate rolling roll automatic water spraying device which is capable of efficient and safe operation by suppressing manual ball valve operation for supplying and blocking cooling water during rotation.

In the metal plate manufacturing plant of the heavy plate plant, Slabra is a facility called a rolling mill to produce hot, unprocessed blades that can be manufactured to meet the demands of customers by rolling the material.

In the plate rolling operation, the main motor (MAIN MOTOR) drives the circumferential rolling roll with the power generated by the spindle to make the rolling work. As it rises, it must be forcedly cooled by cooling water (5㎏ / ㎠).

As shown in FIG. 1, the cooling of the roll is performed by directly adjusting the amount of cooling water with the ball valve 22 to spray the surface of the rolling roll through the nozzle 2 to cool the roll or the hot blade contacting the roll. Must be done.

The coolant is to be opened and closed by manual operation of the electric valve switch. Especially, the roll water must be shut off during roll kicking.

In other words, the roll kissing that stops the roll and is carried out during the operation should be performed with the coolant shut off, and after this operation, the coolant should be sprayed again while rotating the roll.

At this time, if the worker continues to forget the spraying of the cooling water and continues to spray it, serious accidents of rolling roll loss may occur.

However, due to the hassle of shutting off the coolant during the operation and spraying the coolant again after the roll kissing, the roll kissing operation is frequently performed without the coolant being shut off. Local cooling results from local cooling, and the supercooled part is overheated again in the subsequent rolling operation. Thus, stress is generated by rapid temperature change, and hot crack (HOT TEAR CRACK) occurs. It can also be.

Due to the above reasons, the cooling water is always shut off during the rolling operation and the roll stop, and valve wear occurs due to frequent operation of the electric valve by the above operation.

In addition, the cooling water may not be blocked or leak due to malfunction, which may cause excessive maintenance and repair time, and should be judged by the naked eye to determine whether the coolant is sprayed. Problems such as accidents occur.

The present invention has been devised to solve the problems in view of the above-described problems of the prior art, and when the roll is stopped, the coolant must be shut off and the coolant is sprayed and the roll is stopped during the rolling operation even when the operator does not operate the electric valve switch. In the city, the cooling water is automatically shut off to protect rolling equipment, improve worker efficiency, and reduce maintenance time, which contributes to productivity.

The above-described object of the present invention is one side is formed by a plurality of bolt holes and the support appearance coupled to a pair of support inner tube which is supported on the housing upper surface is fixed to the side of the coupling plate of the upper side and the other side is perforated vertically and rotated A cooling water pipe accommodating the valve therein; The rotary valve is coupled to the return spring and the auxiliary valve on the outer periphery, the auxiliary valve is provided with a pin coupled to the return spring and the outside, the inside is formed with a boss and a key groove for accommodating the spline shaft, the spline A small bevel gear flanged to the lower portion of the shaft and fixed to the housing by a bearing in the middle portion; A large bevel gear with one side of the small bevel gear and a tooth coupled to the other side of the small bevel gear, the pinion being axially coupled to the housing by a bearing; One side of the pinion and the rack in the rack guide gear teeth are elastically supported downward by a spring provided on the top of the rack, coupled by a fixing pin is rotated along the outer periphery of the cam formed on the rolling roll It is achieved by constructing.

1 is a structural diagram of a conventional rolling roll cooling water injector,

2 is a cross-sectional view of a thick plate rolling roll automatic water spraying device according to the present invention,

3 is a perspective view of a thick plate rolling roll automatic water spraying device according to the present invention,

4 is an exploded perspective view of a thick plate rolling roll cooling water automatic injection device according to the present invention,

5 is a detailed view of the plate rolling roll cooling water automatic injection device operating unit according to the present invention.

Explanation of symbols on the main parts of the drawings

1: cooling water pipe 2: nozzle

3: rotary valve 3 ': boss

3 ': key groove 4: auxiliary valve

5: Return spring 5 ': Contact pin (FIN)

6: Spline Shaft 7, 7 ': Fixing Nut

8, 8 ': guide ring 9: flange

10, 10 ', 10': bearing 11: small bevel gear

11 ': Great Bevel Gear 12: Pinion

13: rack 14: rack guide

15: Compression Spring 16: Spring Fixed Key (KEY)

17: roller 18: fixing bolt

19: Cam 20: Inner Tube

20 ': Supporting appearance 20': Coupling plate

21: injection check 22: ball valve

23: ROLL NECK 24: HOUSING

25: rolling roll

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

2 is a cross-sectional view of a thick plate rolling roll automatic water spraying device according to the present invention,

3 is a perspective view of a thick plate rolling roll automatic water spraying device according to the present invention,

4 is an exploded perspective view of a thick plate rolling roll cooling water automatic injection device according to the present invention,

5 is a detailed view of the operation portion of the thick plate rolling roll cooling water automatic injection device according to the present invention,

Figure 6 is a cam assembly diagram of the thick roll rolling water automatic spraying device according to the present invention.

2 to 6, one side of the cooling water pipe (1) vertically perforated vertically has a plurality of bolt holes are formed and a pair of support inner tube 20 which is supported by the upper surface of the housing and the support inner tube It is fixed to the side by the upper coupling plate 20 'of the cooling water pipe support outer shell 20' that is accommodated and bolted.

The rotary valve 3 combines the auxiliary valve 4 and the return spring 5 in the perforated cooling water pipe 1, and then inserts guide rings 8 and 8 'for preventing leakage and release from the upper and lower parts. (1) Vertically penetrating through the perforations, the upper and lower inserts of the perforated cooling water pipes (1) have screw grooves on the outer surface and are fastened by nuts (7, 7 ').

On the lower surface of the rotary valve (3) protruding below the coolant pipe (1), a key groove is molded in a crushed state, and a spline shaft (6) having a flange at the other end thereof is inserted into the groove.

The spline shaft is fastened to one end with a small bevel gear and the other end with a flange and a flanged fixed shaft joint.

An auxiliary valve 4 is installed in the rotary valve 3 to prevent leakage of the coolant, and the end of the auxiliary valve 4 is rounded to smoothly rotate on the inner wall of the coolant pipe 1 as shown in FIG. 5. In the auxiliary valve 4, a return spring 5 for supporting the '┷' shaped contact portion 5 'and the' ┷ 'shaped contact portion 5' is inserted and the auxiliary valve 4 The end of the configuration is configured in the '┌┐' shape to prevent the departure to configure the operation portion to play a role of making the auxiliary valve (4) in close contact with the inner surface of the coolant pipe (1).

When the rolling roll rotates to transmit the driving force so that the rotary valve 3 rotates, the roller 17 reduces the resistance by changing the sliding friction to the rotating friction by the cam 19 protruding and fixed to the rolling roll neck 23. Is in contact with the upper surface of the cam to perform a rotational movement and at the same time the rack 13, which is fixed to the roller 17, the fixed bolt 18 is inserted into the rack guide 14 is installed in the rack guide 14 You will have a straight reciprocating motion.

Between the rack 13 to be inserted into the rack guide 14 is supported by a spring fixing key 16 protruding from the rack 13 and the compression spring 15 stronger than the supply pressure (5kg / ㎠) of the cooling water This is a snowfall.

When the rack 13 performs a straight reciprocating motion, the pinion 12 engaged therein rotates in both directions, and the right bearing of the rotating shaft supported by the bearings 10 and 10 'installed on the left and right sides protrudes from both sides of the pinion. 10) A large bevel gear 11 'is connected to the end of the rotating shaft which protrudes through the cone and the tooth shape is reduced toward the vertex along the conical mother line. The small bevel gear 11 of the lower part of the spline shaft and the shaft are interlocked and installed.

When the two bevel gears 11 and 11 'interlock with each other and rotate, the spline shaft 6 connected to the small bevel gear 11 rotates, and the rotary valve 3 in the cooling water pipe 1 opens and closes. do.

In order to support the coolant pipe 1, a coolant pipe support tube 20 'is joined to a positive side of the outer circumferential surface of the coolant pipe 1, and the coolant pipe support tube 20' is fixed to the upper portion of the housing. It is inserted into the support rod 20 and fastened to the fixing bolt 18.

The present invention consisting of such a configuration works as follows.

As shown in FIG. 3, when the rolling roll is stopped, the cam 19 protruding on the rolling roll rotation shaft is not operated and the rotary valve 3 remains stopped so that the cooling water does not flow into the cooling water pipe 1.

This is because the compression spring 15 which is installed between the rack 13 and the rack guide 14 withstands the coolant pressure.

When the rolling roll is rotated, the cam 19 protrudingly fixed to the rolling roll neck 23 is rotated so that the rack 13 supported by the roller 17 in contact with the cam 19 moves up and down. The pinion 12 is bi-directionally rotated by this up and down movement, and the shaft fixed by the bearings 10 located on both sides of the pinion 12 rotates to rotate the large bevel gear 11 'forward and backward. The bevel gear 11 having a small gear ratio engaged therein is rotated by receiving torque and the spline shaft 6 which is fastened to the flange 9 is rotated.

The rotary valve 3 opens and closes while being rotated by the rotational force transmitted to the spline shaft 6, and the supplied coolant pressure reaches 5 kg / cm 2, so that the rotary valve 3 naturally flows into the coolant pipe 1, and then the nozzle (2). Sprayed through).

The rotary valve 3 can be slidably rotated by the guide ring 8 between the main body of the cooling water pipe 1 and the fixing nut 7 so as not to be separated from the cooling water pipe 1, and the rotary valve 3 Auxiliary valve (4) and return spring (5) attached to suppress the leakage of the coolant along the outer circumferential surface of the) is in close contact with the coolant pipe to achieve an effective cooling spray.

Finally, the presence or absence of the injection of the cooling water can be determined through the injection check system (21).

As described in detail above, the present invention is a spray of the cooling water of the rolling rolls in contact with the blade of high heat in the metal rolling process is automatically injected by the rotation of the rolling rolls without the operation of the electric valve operation and the amount of cooling water to the rotational speed of the rolling rolls As it is controlled by the electric valve, it can expect the effect of reducing the maintenance time and minimizing the worker's fatigue in case of abnormality of the electric valve.

Claims (2)

One side is formed with a plurality of bolt holes and the support outer tube 20 'coupled to the pair of support inner tubes 20 supported on the upper surface of the housing 24 is fixed to the side of the coupling plate 20' of the upper side and the other side is Cooling water pipe (1) for perforating the lower vertically to accommodate the rotary valve (3) inside; The rotary valve 3 has a return spring 5 and an auxiliary valve 4 coupled to an outer circumference thereof, and a pin 5 'coupled to the return spring 5 and an outer side of the auxiliary valve 3 is provided inside the auxiliary valve 3. A boss 3 'and a key groove 3' are formed therein for accommodating the spline shaft 6, and a lower portion of the spline shaft 6 and a flange 9 are coupled to each other, and a bearing 10 is provided in the middle portion. Small bevel gear 11 is fixed to the housing 24 by the; A large bevel gear 11 'having one side geared to the small bevel gear 11 and the other side pinned to the pinion 12 and fixed to the housing 24 by bearings 10' and 10 '; To one side of the pinion 12 and the rack 13 in the rack guide 14 is geared and elastically supported downward by a spring 15 provided on the upper portion of the rack 13, the fixing pin 18 Rolling roll cooling water automatic spraying device characterized in that it comprises a roller (17) coupled by rotating along the outer periphery of the cam (19) formed on the rolling roll (25). According to claim 1, wherein the auxiliary valve (4) inside the '하부' shaped pin (5 ') and the return spring (5) for supporting the contact pin (5') is inserted into the lower and the auxiliary valve ( End of 4) is a '판' shape is configured to prevent the departure of the pin (5 ') characterized in that the thick roll rolling water automatic spraying device.