JPS6163312A - Coating device of rolling lubricant of rolling mill - Google Patents

Abstract

PURPOSE:To make an operation easy and to make the abrasion of a roll uniform by moving the header fitting the jet nozzle of a rolling lubricant in parallel with the shaft core of a roll and by enabling the uniform coating of a lubricant on the peripheral face of a roll. CONSTITUTION:The titled device is made with providing the roller 10 with the pressure contact to a rolling roll 3, the screw shaft 9 rotating according to the rotation of the roller 10 with halving the right and left and with screwing opposite screws 9A, 9B, a header frame 7, an arm 11, a direction change-over lever 17 and projections 8B, 8C abutting from the moving direction of the frame 7 to the tip part 17B of the lever 17 at the moving end of said frame 7 respectively to a fixed frame 8. Said frame 7 moves on the frame 8 with fixing the lubricant feeding header 4 providing the jet nozzle 5 spraying a rolling lubricant on the peripheral face of the roll 3. Notched nuts 19A, 19B which can be screwed into the screws 9A, 9B are provided on said arm 11, which is beared freely rotatably to the frame 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rolling lubricant coating device for a rolling mill in hot and cold rolling. The purpose of this is to uniformly spray and apply lubricant to the surface.

[Conventional technology]

When performing hot or cold rolling of steel, rolling lubricants are widely used to reduce wear on the rolling rolls, reduce roughening of the peripheral surface of the rolls, and reduce rolling power. .

In a conventional method for applying rolling lubricant, lubricant is sprayed onto the circumferential surface of a reinforcing roll or work roll using lubricant supply headers provided at appropriate intervals.

The reinforcing roll injection method, which is a typical example of this conventional method, will be explained with reference to FIGS. 8, 9, and 10.

In the figure, 1 is a rolled material, and this rolled material 1 is rolled by a pair of work rolls 2.2.

The reinforcing roll 3 whose peripheral surface is in pressure contact with the rolling roll 2 is used to apply a stronger rolling force to the rolling roll 2.

In the vicinity of this reinforcing roll 3, a lubricant supplying soda 4 having a plurality of injection nozzles 5 provided at equal intervals is placed in the vicinity of the reinforcing roll 3.
The plurality of injection nozzles 5 are arranged along the axis of the header support 6 and are fixed to the header support 6 by means of fixing fittings 22.

A lubricant supply hose 14 is connected to this header 4 via a connecting pipe 23, and the lubricant supplied into the header 4 through this hose 14 is sprayed from a spray nozzle 5 onto the circumferential surface of the reinforcing roll 3. It is supposed to be done.

The lubricant injected from the injection nozzle 5 is sprayed onto the circumferential surface of the rotating reinforcing roll 30 and comes into contact with the circumferential surface of the work roll 2 as the reinforcing roll 3 rotates.

This contact with the circumferential surface of the work roll 2 causes the reinforcing roll 3 to
A part of the lubricant adhering to the circumferential surface of the work roll 2 is transferred to the circumferential surface of the work roll 2, and as the work roll 2 rotates, this transferred lubricant reaches the biting part between the work roll 3 and the rolled material 1. , thereby achieving a lubricating effect between the work roll 2 and the rolled material 1.

[Problem that the invention seeks to solve]

In this conventional method, in order to uniformly apply the lubricant to the circumferential surface of the work roll 2 along the lengthwise direction of the body of the work roll 2,
The lubricant is once applied by spraying onto the circumferential surface of the reinforcing roll 30, and the lubricant is applied uniformly to the circumferential surface of the work roll 2 by the pressure contact at the contact area between the reinforcing roll 3 and the work roll 2. However, in reality, the lubricant is not necessarily uniformly attached to the circumferential surface of the work roll 2, and the injection nozzle 5 is attached to the work roll 2 in accordance with the pitch.
The circumferential surface of the rolled material 1 exhibits uneven wear or localized wear, which has an adverse effect on the surface quality of the formed rolled material 1.

This may be caused by abnormalities in the supply device such as clogging of the injection nozzle 5 or uneven lubricant concentration, as well as failure to achieve uniform spray application of the lubricant along the axial direction of the reinforcing roll 3. The impact of not having one is playing a large role.

That is, since the amount of lubricant applied to the circumferential surface of the reinforcing roll 3 is not uniform along the axial direction of the reinforcing roll 3, the amount of lubricant applied to the circumferential surface of one work roll 2 is different from that in this work. Unevenness occurs along the axis of the roll 2, and this causes local increases and decreases in the wear of the work roll 2.

The reason why there is a difference in the amount of lubricant applied to the circumferential surface of the reinforcing roll 3 is that the position of the header 4 is fixed at a fixed position, whereas the work roll changes depending on the thickness of the rolled material 1. 2 and the reinforcing roll 3 change in vertical position,
The injection distance from the injection nozzles 5 to the circumferential surface of the reinforcing roll 3 changes, and as a result of this change in injection distance, the lubricant injected from the adjacent injection nozzles 5 spreads around the reinforcing roll three times, as shown in FIG. There may be areas where the surface overlaps,
The width of this ramping area increases or decreases, and the reinforcing roll 3
/Ii against the circumferential surface! ! The main cause is thought to be a difference in the amount of lubricant applied.

[Means to solve the problem]

The present invention was devised to solve the problems and drawbacks of the conventional examples described above, and is designed to reciprocate the header to which the injection nozzle is attached parallel to the axis of the reinforcing roll or work roll. .

DESCRIPTION OF THE PREFERRED EMBODIMENTS A rolling lubricant coating device for a rolling mill according to the present invention will be described below with reference to FIGS. 1 to 7 showing an embodiment thereof.

A rolling lubricant application device for a rolling mill according to the present invention.

The circumferential surface was pressed against the circumferential surface of the roll of the rolling mill (either the reinforcing roll 3 or the work roll 2 may be used, but from a practical standpoint, the reinforcing roll 3 is more advantageous due to installation conditions, etc.) without slipping. The roller 10 is divided into two parts in the length direction, one of which has a right-hand screw 9A and the other a left-hand screw 9B, and is installed on the fixed frame 8 parallel to the axis of the roll 2 or 3. A screw shaft 9 that rotates according to the rotation of the roll 2 or 3, and a lubricant supply header 4 provided on the top surface with a plurality of injection nozzles 5 that spray rolling lubricant onto the circumferential surface of the roll 2 or 3 at equal intervals along the length direction. a header frame 7 that is fixed and moves on the fixed frame 8 parallel to the axis of the roll 2 or 3; and the screw shaft 9.
This right-handed screw 9 is attached to one end opposite to the right-handed screw 9A of the
A first notch nut 19A that can be screwed into the left-hand thread 9B is provided at the other end opposite to the left-hand thread 9B, and a second notch nut 19B that can be screwed into the left-hand thread 9B is provided at the center. An arm 19 is rotatably fixed to the header frame 7, and a base end 17 is attached to the center of the arm 19.
a direction switching lever 17 which is integrally fixed and held so as to be able to be switched to either the left or right oblique position by the action of an extended spring force; and the direction switching lever 17 at the moving end of the header frame 7. The fixed frame 8 is provided with protrusions 8B and 8G that abut against the free end 17B of the header frame 7 from the direction of movement of the header frame 7.

Since the direction switching lever 17 is always tilted to either the left or right, the arm 19 is also in a swinging position to either the left or right, and therefore the first notch 19A or the second notch Either one of the screws 19B is screwed into the opposing right-hand screw 9^ or left-hand screw 9B.

[Function] Since the device of the present invention has the above-described configuration, when the roller 10 is brought into pressure contact with the circumferential surface of the reinforcing roll 3 during one rotation and rotated, the screw shaft 9 is rotated by the rotation of the roller 10.
rotates in the specified direction.

By this rotation of the screw shaft 9, the arm 19, in which one of the notch nuts 19A or 19B is screwed onto the screw shaft 9, moves along the axial direction of the roll 3 together with the header frame 7.

Together with this header frame 7, i.e. header 4, -
The arm 19 moving together moves in a direction 3 set by the rotational direction of the screw shaft 90 and the thread direction formed on the screw shaft 9, for example, in the case of the illustrated embodiment, the notched neck l-194.
Alternatively, it moves toward the right-hand screw 9A or left-hand screw 9B on the unscrewed side of 19B, but when this movement reaches its limit, the tip 17B of the direction switching lever 17 hits the protrusion 8B or 8C, Since the inclined posture is reversed together with the arm 19, the notched nuts 19A and 1'9B screwed into the screw shaft 9 are switched,
thereby reversing the moving direction of the header 4 with respect to the roll 3,
Thereafter, the header 4 is reciprocated along the axis of the roll 3 by the same operation, thereby uniformly spraying and applying the a lubricant onto the circumferential surface of the roll 4.

〔Example〕

In the illustrated embodiment, the roller 10 is rotatably attached to the tip of an arm 11 whose base end is rotatably assembled to one end of a screw shaft 9 rotatably fixed on the head frame 7 by a bearing 8D. It's been a long time since I've been in the middle of a long time.

By passing the chain 12 between the first sprocket 15 fixed to the rotating shaft of the roller 10 and the second sprocket 6 fixed to one end of the screw shaft 9, the rotational force of the roller 10 is transferred to the screw. The signal is configured to be transmitted to the shaft 9.

In the header frame 7, a slide piece 7A for guiding the movement of the header frame 7 is fixed to the lower surface of the body to which the header 4 is fixed on the upper surface, and the header frame 7 is attached to the fixing frame 8 from both end surfaces of the slide piece 7. A sliding shaft 7D is provided as an extension for slidably assembling the shaft.

For mounting, a fulcrum shaft 7B is hung on the lower surface of the part of the plate 7E that protrudes toward the screw shaft 9, and the arm 19 and the direction switching lever 17 are rotatably assembled integrally to this fulcrum shaft 7B. ing.

The fixed frame 8, on which the header frame 7 is movably assembled along the axis of the roll 3, holds the header frame 7 in a slidable manner by holding the sliding shaft 7D of the header frame 7 with a sliding bearing 8E. A guide piece 8 which is held movably and is slidably engaged with the slide piece 78.
By providing A, the movement of the header frame 7 is made more stable, and the first and second protrusions 8B and 8C which set the movement limits of the header frame 7 are provided with mounting points.

The tilting posture holding means of the direction switching lever 17, in which the base end 17A is integrally fixed to the fulcrum shaft 7B with the arm 19, is attached to a pin 17C protruding from the upper surface of the tip 17B of the direction switching lever 17, and is attached to the plate 7E. Pin 7C protruding from the bottom surface of
An elastic spring 18 is provided between the elastic spring 18 and the repulsive force of the elastic spring 18 to further maintain the inclined posture.
9 to maintain the threaded engagement with the screw shaft 19.

However, since the pin 7C is positioned at the center of the switching swing range of the direction switching lever 17,
When the position of the tip portion 17B is displaced to the opposite side due to the action of an external force, this resilient spring 18.

It functions to maintain this direction switching lever 17 in this switched inclined position.

A bracket 19C is attached to each arm portion of the arm 19.
, 19G are provided, and a sliding rod 20 is provided whose tip is brought into contact with the side surface of the direction switching lever 17 by the elasticity of a fitted coil spring 21, and the direction switching lever 17 changes its inclined posture to the opposite side. When switching to
The screwing of 9A and 19B to the screw shaft 9 is maintained.

Therefore, the direction switching lever 17 and the arm 19 are not completely integrated, but the arm 19 is rotatable relative to the direction switching lever 17 within a certain range of rotation. .

Further, the tip of a piston rod of a fluid cylinder 3 is connected to one end of the arm 11, and the action of the fluid cylinder 3 controls on/off of the pressure contact of the roller 0 with the circumferential surface of the roll 3. I'm in trouble.

In the illustrated state, the direction switching lever 17 is inclined in the X direction in FIG. 6, so the first notch nut 19A is screwed into the right-hand thread 9^. While supplying rolling lubricant, the fluid cylinder 13 is operated to press the roller 10 against the circumferential surface of the roll 3.

When the roller 10 rotates due to pressure contact with the circumferential surface of the roll 3, this rotational force is transferred from the first sprocket 15 to the chain 1.
2 to the second sprocket 16 to rotate the screw shaft 9 in a fixed direction.

Due to this rotation of the screw shaft 9, the arm 19 that screwed the first notch nut 19A onto the right-hand screw 9A moves in the X direction in FIG. 6, and finally the direction switching lever 17
The distal end portion 17B of the direction switching lever 17 is abutted against the first protrusion 8B, thereby rotating the switching lever 17 in the Z direction against the elasticity of the resilient spring 18, thereby switching the tilted posture of the direction switching lever 17.

By switching the tilted posture of the direction switching lever 17, the first notch off l, which was previously screwed into the right-hand screw 9A, is turned off.
-19A is unscrewed, and at the same time the second notched nut 19
B is screwed into left-hand screw 9B.

By screwing the second notch nut 19B into the left-hand screw 9B, the header frame 7 starts moving in the Y direction in FIG.
7B against the second protrusion 8C to reverse the tilted posture of the direction switching lever 17 to the original state, thereby releasing the threaded engagement with the left-hand thread 9B of the second notch nut 19B, and again turning the first notch nut 19B. The notched nut 19A is screwed onto the right-hand screw 9A, and the header frame 7 is moved back and forth in the same manner.

During this reciprocating movement of the header frame 7.

The rolling lubricant is continuously sprayed onto the circumferential surface of the roll 3 from the header 4 .

In this way, while the header 4 reciprocates along the axis of the roll 3, the Q'1% agent is sprayed onto the circumferential surface of the roll 3 from the spray nozzle 5. Even if there is a lapped part in the lubricant application from 5, this lapped part also moves along the axis of the roll 3 together with the header frame 7, so unevenness in lubricant application due to lapping can be avoided. As a result, the lubricant can be uniformly applied to the circumferential surface of the roll 3.

In this way, the device of the present invention applies lubricant to the circumferential surface of the roll 3.
Since the coating can be applied uniformly along the axis of the roll 3, wear on the circumferential surface of the roll 2 can be made uniform along the axis.

Further, since the driving power source directly utilizes the rotational force of the rolls 2 and 3 of the rolling mill, the structure of the apparatus can be simplified.

Furthermore, since the header frame 7 is simply reciprocated linearly along the axial direction of the roll 3, the entire device can be made sufficiently compact, making it possible to fit around the rolls 2 and 3 of narrow rolling mills. It can be installed easily.

〔Effect of the invention〕

As is clear from the above description, the rolling lubricant application device for a rolling mill according to the present invention can uniformly apply lubricant to the circumferential surface of the rolls, so that the wear of the rolls can be made uniform. Its operation is simple and constant action can be obtained at all times.Furthermore, it has a simple structure and can be manufactured in a small size, so it is easy to handle and use, and exhibits many excellent effects. .

[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of the device of the present invention. FIG. 2 is a partial side view taken along line CC in FIG. 3 is a partial front view taken along line CC in FIG. 2. FIG. FIG. 4 is a partial sectional view taken along the line CC in FIG. 2. FIG. 5 is a partial vertical sectional view taken along the line CC in FIG. 2. FIG. FIG. 6 is a partial plan view showing the connection structure between the screw shaft and the header frame in a state where the plate of the header frame in FIG. 1 is removed. 7 is a partial vertical sectional view taken along the line E7E in FIG. 6. FIG. 8 to 10 show conventional examples. FIG. 8 is a side view, FIG. 9 is a plan view, and FIG. 10 is an explanatory diagram showing the state of application of lubricant to the circumferential surface of the roll. Explanation of symbols 1: Rolled material, 2: Work roll, 3: Reinforcement roll. 4; Lubricant supply header, 5; Injection nozzle, 7; Spatula frame, 8; Fixed frame, 9; Screw shaft. 98; right-hand screw, 9B; left-hand screw, 10; roller, 11; arm, 12; chain, 13; cylinder, 14; hose. 15.16; Sprocket; 17; Directional switching lever. 18; Resilient spring, 19; Arm, 198, 19B
, notched nut, 20; tU moving rod, 21; coil spring. Applicant Kawasaki Steel BU? Co., Ltd. 7 Candle Bud, θ Bu242 1゜Buchi 2μ Gong Pu24 111111"1'-2

Claims (1)

[Claims] A roller whose circumferential surface is in pressure contact with the circumferential surface of a roll of a rolling mill without slipping, and a roller that is divided into two in the length direction, with a right-handed screw carved into one side and a left-handed screw carved into the other, and mounted on a fixed frame to attach the axis of the roll. A lubricant supply header includes a screw shaft that is installed parallel to the roller and rotates according to the rotation of the roller, and a plurality of injection nozzles that spray rolling lubricant onto the circumferential surface of the roller at equal intervals along the length. a header frame that is fixed to an upper surface and moves on the fixed frame parallel to the axis of the roll; and a first notch nut that can be screwed into the right-hand thread at one end located opposite to the right-hand thread of the screw shaft. and a second notch nut screwable to the left-hand thread at the other end opposite to the left-hand thread, and an arm rotatably fixed to the header frame at the center thereof; a direction switching lever whose proximal end is integrally fixed to the center of the header frame, and which extends and is held so that it can be switched to either the left or right tilted position by the action of a spring force; and the direction switching lever at the movable end of the header frame. A rolling lubricant application device for a rolling mill, in which a fixed frame is provided with protrusions that abut the free ends of the levers from the moving direction of the header frame.