CN106925613A - A kind of small roll gap regulation and control of high accuracy are to roller mill - Google Patents

Abstract

The invention discloses a pair-roll rolling mill with high precision and small roll gap regulation, which comprises: a frame; a counter-roll mechanism, which can adjust the roll gap, and is installed on the frame; a transmission mechanism, which drives two rollers in the counter-roll mechanism to rotate The roll gap adjustment mechanism is used to adjust the gap between the two rollers in the roll-to-roll mechanism. The roll-gap adjustment mechanism includes a pair of first sliders moving along the first direction and a pair of rollers for supporting one of the roll-to-roll mechanisms. The second sliding member whose wheel moves in the second direction relative to the other roller; when each first sliding member moves relative to the frame to generate a displacement along the first direction, it can drive a second sliding member that cooperates with it to generate a displacement along the second direction. The displacement of the first slider is greater than the displacement of the second slider, and finally achieves the effect of precise regulation of the roll gap. The invention has the beneficial effects of simple structure, low cost and meeting the requirement of high-precision regulation.

Description

A pair-roll rolling mill with high-precision small-gap control

technical field

The invention belongs to the technical field of high-precision double-roll mills, and in particular relates to a high-precision small-gap control double-roll mill.

Background technique

Pair-roll rolling mill is the most common metal rolling equipment in the market at present. According to the different requirements of the metal to be rolled, there are various types of rolling mills with different volume, size and precision requirements. Taking battery grid rolling mill as an example, there are many types of counter-rolling mills. rolling mill.

The roll gap adjustment device is one of the most important structures in the double-roll mill, mainly used to adjust the roll gap. The quality of the device directly affects the precision of the rolled piece. And the existing roller system adjustment device is mainly manual adjustment, electric adjustment and hydraulic adjustment. Manual adjustment is generally used for infrequent adjustments, low precision requirements for rolled pieces, and small rolling mills with low rolling speed; the traditional electric adjustment device directly drives the movement of the rollers through the motor, and is suitable for moderate thickness of the plate. In the case of large gap change and fast speed, when the gap needs only a small amount of adjustment, the motor will be difficult to control the roller stroke, so the response is slow and the precision is low during the gap adjustment process, which is no longer suitable for modernization. High-efficiency and high-precision requirements of the rolling mill; the hydraulic adjustment device has small inertia, high sensitivity, compact structure, and is suitable for rolling parts with a wide range of mildness. However, the hydraulic system has high requirements on working conditions and the system is complex. The device has high requirements for precision, which increases the cost of the equipment. When the equipment vibrates during use, it will affect its adjustment accuracy. Therefore, it is necessary to improve the rolling mill in the prior art so that the cost can be reduced, the structure can be simplified and the requirement of high-precision adjustment can also be met.

Contents of the invention

The object of the present invention is to overcome the deficiencies in the prior art and provide a pair-roll mill with high-precision small-gap regulation, which has a simple structure, low cost and can meet the needs of high-precision regulation.

In order to solve the problems of the prior art, the present invention discloses a pair-roll rolling mill with high precision and small roll gap regulation, including:

frame;

Roller mechanism, adjustable roller gap, installed on the frame;

The transmission mechanism drives the two rollers in the roller mechanism to rotate;

The roller gap adjustment mechanism is used to adjust the gap between the two rollers in the roller mechanism,

The roller gap adjustment mechanism includes a pair of first sliding members moving along a first direction and a pair of second sliding members for supporting one of the rollers in the counter-roll mechanism to move in a second direction relative to the other roller; When a sliding part moves relative to the frame to generate a displacement along the first direction, it can drive a second sliding part matched with it to generate a displacement along the second direction, and the displacement value of the first sliding part is greater than that of the second sliding part.

Further, the roll gap adjustment mechanism also includes:

A pair of driving mechanisms respectively drive a first sliding member to move; each driving mechanism has a rotating member that can rotate around its own axis to generate movement along its axis, and when each rotating member rotates, it can drive a first sliding member that cooperates with it. The slider moves along the axis direction.

Further, the roll gap adjustment mechanism also includes:

A pair of servo motors, the output shaft of each servo motor is connected and drives a rotating member.

Further, the rotating part is a lead screw, and the first sliding part has a threaded hole matching the lead screw.

Further, the first sliding member has a first sliding surface extending along the third direction, the second sliding member has a second sliding surface capable of forming a sliding connection with the first sliding surface along the third direction, and the third direction is connected with the first sliding surface. The included angle in one direction is less than 45°.

Further, the transmission mechanism includes:

The idler wheel assembly can always be meshed with the gears on the two rollers in the counter-roll mechanism when the roller gap is adjusted.

Further, the idler assembly includes:

The first idler wheel is fixedly installed on the frame;

The second idler is in dynamic engagement with the first idler along its circumferential direction.

Further, the idler assembly includes:

The idler frame has a fixed part and a movable part capable of circumferentially moving relative to the fixed part;

The operating part can drive the movable part on the idler frame to move relative to the fixed part when moving along its axis direction;

The first idler is installed on the movable part of the idler frame, and the second idler is installed on the fixed part.

Further, the idler assembly includes:

The fixed frame is installed on the frame;

The connecting plate is installed on the fixing frame and has a pair of threaded holes;

The operating part is a bolt capable of fitting into the threaded hole.

Further, the idler frame has a waist-shaped groove, and the idler frame can be fixed to the fixed frame by loading bolts into the waist-shaped groove during the movement.

The invention has the beneficial effects of simple structure, low cost and meeting the requirement of high-precision regulation.

Description of drawings

Fig. 1 is the structural representation of a preferred embodiment of the present invention;

Fig. 2 is a schematic structural view of the roll gap adjustment mechanism in the embodiment shown in Fig. 1;

Fig. 3 is a schematic structural view of the idler assembly in the embodiment shown in Fig. 1;

Fig. 4 is a working principle diagram of the embodiment shown in Fig. 1 .

Reference signs:

101 support frame; 102 support platform; 201 lower roller; 202 upper roller; 301 pulley; 302 driving gear; 303 driven gear; 304 idler assembly; 3041 idler frame; 3042 fixed frame; 1 idler; 3045 second idler; 3046 first axle; 3047 second axle; 3048 waist groove; 3049 bolt; 401 bearing frame; 402 first slide; 403 second slide; 4031 bearing seat; 4032 Slide block; 404 leading screw; 405 end cover; 406 servo motor; 407 first guide rail; 408 second guide rail.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

As shown in Figures 1 to 3, a pair-roll mill with high-precision small-gap regulation includes: a frame, a pair-roll mechanism, a transmission mechanism, and a roll-gap adjustment mechanism.

The frame includes a support frame 101 with a hollow installation area and support platforms 102 installed at both ends of the support frame 101 . The roller mechanism includes two rollers installed parallel to the hollow installation area on the support frame 101, and the two rollers are divided into an upper roller 202 and a lower roller 201 in the second direction, wherein the position of the lower roller 201 It is fixed relative to the frame, and the position of the upper roller 202 can be adjusted relative to the lower roller 201 along the second direction so as to change the gap between the two rollers.

The transmission mechanism includes a pulley 301 , a driving gear 302 , a driven gear 303 and an idler assembly 304 . The pulley 301 and the driving gear 302 are coaxially installed on the roller shaft of the lower roller 201, and the lower roller 201 is driven to rotate by the motor and the belt transmission mechanism; the driven gear 303 is installed on the roller shaft of the upper roller 202, and the upper roller The wheel 202 and the lower roller 201 constitute a gear transmission in opposite directions through the idler assembly 304 .

The idler assembly 304 includes an idler frame 3041 , a fixed frame 3042 , a first idler 3044 , a second idler 3045 and an operating member. The fixing frame 3042 can be installed on the supporting frame 101 by welding, and the connecting plate 3043 is welded on the fixing frame 3042, and the connecting plate 3043 has a pair of threaded holes.

The idler frame 3041 has a fixed portion and a movable portion that can move circumferentially relative to the fixed portion; the fixed portion is mounted on the fixed frame 3042 through the second axle 3047, and the second idler 3045 is rotated on the second wheel shaft. On the wheel shaft 3047, the idler frame 3041 at this time can rotate relative to the fixed frame 3042 with the axis of the second wheel shaft 3047 as the rotation center. The movable part rotates and installs the first idler wheel 3044 through the first wheel shaft 3046 , and at this moment, the first idler wheel 3044 can move circumferentially relative to the second idler wheel 3045 . The operating part is a bolt 3049 that can fit into the threaded hole, and its end abuts against the idler frame 3041 so as to drive the movable part on the idler frame 3041 to move relative to the fixed part when it can move along its axis. The first idle gear 3044 meshes with the driven gear 303, and the second idle gear 3045 can always mesh with the driving gear 302 during the rotation of the idle gear frame 3041 to realize power transmission. The idler frame 3041 has a pair of waist-shaped grooves, and the idler frame 3041 can be fixed to the fixed frame 3042 by loading bolts into the waist-shaped grooves 3048 during the movement.

The roll gap adjustment mechanism includes a pair of first sliders 402 moving along a first direction and a pair of second sliders 403 for supporting one of the rollers in the counter-roll mechanism to move in a second direction relative to the other roller. Each second sliding member 403 is movably mounted on each supporting platform 102 via a bearing frame 401 so as to be able to generate displacement along the second direction. Each first sliding member 402 is movably mounted on each supporting platform 102 through a driving mechanism so as to be able to generate displacement along the first direction. Specifically, each driving mechanism has a lead screw 404 that can rotate around its own axis to move along its axis. One end of the lead screw 404 is connected to the output shaft of a servo motor 406, and the other end is rotatably mounted on the drive shaft through an end cover 405. on the support platform 102. When the servo motor 406 works, it drives the lead screw 404 to rotate, and the first sliding member 402 cooperates with the lead screw 404 through the threaded hole to move along the first direction.

The first sliding member 402 is a sliding block, which is slidably installed on the supporting platform 102 through the first guide rail 407 , and the sliding block has a first sliding surface extending along the third direction. The second sliding member 403 includes a bearing seat 4031 and an upper slider 4032, and the two sides of the bearing seat 4031 are slidably installed on the bearing frame 401 through a second guide rail 408 respectively, and the bearing seat 4031 cooperates with the roller shaft of the upper roller 202 so that The upper roller 202 forms a movable support. The upper slider 4032 is fixed on the bearing housing 4031, and has a second sliding surface capable of forming a sliding connection with the first sliding surface along the third direction. The included angle between the third direction and the first direction is less than 45°, so that the displacement value of the lower slider 4032 in the first direction is greater than the displacement value of the upper slider 4032 in the second direction.

In the present invention, the first direction refers to the X-axis direction in FIG. 2 , which should be parallel to the ground or the table top of the support platform 102 in actual application. The second direction refers to the Y-axis direction in FIG. 2 , which should be perpendicular to the ground or the table top of the support platform 102 in actual application. The third direction refers to the direction of the Z-axis in FIG. 2 , which should be coplanar with the X-axis and the Y-axis in practical applications and make the included angle with the X-axis as small as possible.

In the present invention, in order to ensure the adjustment accuracy, the roller gap adjustment mechanism can be installed in an axisymmetric or mirror image manner, which is a double mechanism linkage mechanism.

As shown in FIG. 4 , let the angle between the third direction and the first direction be θ, the displacement of the upper slider 4032 in the second direction is H, and the displacement of the lower slider 4032 in the first direction is S. According to the trigonometric function, H=S·tanθ can be obtained, that is, S=H/tanθ. Since θ<45°, S is always greater than H. Therefore, controlling S can control H well. And because the pitch of the lead screw 404 is a known value p, and the number of rotations of the servo motor 406 is n, so S=n·p. In the servo motor 406, the number of turns n is easy to control and the pitch p of the lead screw can also be selected, so the S value is also easy to control. According to the specific working conditions of the rolling mill, the specific adjustment range and accuracy requirements of the roll gap, the upper and lower sliders with different θ angles are selected. Although when the θ adjustment is very small and the precision requirements are high, as long as the θ value is small enough, the S value will always be enlarged. . Because H=S·tanθ=n·p·tanθ, when S is enlarged, it is easy to control the roll gap precision as long as n is controlled. On the other hand, for the same displacement S, the smaller the pitch p of the selected lead screw, the larger the number of turns n, so that the precision of the roll gap can be further improved. At the same time, the screw has a self-locking function, which can prevent the relative displacement of the rollers during the working process, thereby further improving the accuracy of the roller gap during the movement.

The above is only a preferred embodiment of the present invention, and it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can also be made. It should also be regarded as the protection scope of the present invention.

Claims (10)

1. A pair-roll mill with high-precision small-gap regulation, comprising: frame; Roller mechanism, adjustable roll gap, installed on the frame; The transmission mechanism drives the two rollers in the roller-to-roll mechanism to rotate; The roll gap adjustment mechanism is used to adjust the gap between the two rollers in the roll-to-roll mechanism, and is characterized in that: The roll gap adjustment mechanism includes a pair of first sliding members (402) moving along a first direction and a pair of first sliding members (402) for supporting one of the rollers in the pair-roll mechanism to move in a second direction relative to the other roller. Two sliders (403); when each of the first sliders (402) moves relative to the frame to generate a displacement along the first direction, it can drive one of the second sliders (403) that cooperates with it to generate For displacement along the second direction, the displacement value of the first sliding member (402) is greater than the displacement value of the second sliding member (403). 2. A pair-roll rolling mill with high precision and small roll gap regulation according to claim 1, characterized in that: the roll gap adjustment mechanism also includes: A pair of driving mechanisms, respectively driving one of the first sliding members (402) to move; each of the driving mechanisms has a rotating member that can rotate around its own axis to generate movement along its axis, and each of the rotating members rotates At the same time, it can drive one of the first sliding parts (402) matched with it to move along the direction of the axis. 3. A kind of high-precision small roll gap regulation pair-roll mill according to claim 2, characterized in that: the roll gap adjustment mechanism also includes: A pair of servo motors (406), the output shaft of each servo motor (406) is connected and drives one of the rotating parts. 4. A pair-roll rolling mill with high precision and small gap regulation according to claim 2 or 3, characterized in that: the rotating member is a lead screw (404), and the first sliding member (402) has a matching The threaded hole of the lead screw (404). 5. A pair-roll rolling mill with high precision and small gap regulation according to claim 1, characterized in that: said first sliding member (402) has a first sliding surface extending along a third direction, said The second sliding member (403) has a second sliding surface capable of forming a sliding connection with the first sliding surface along the third direction, and the included angle between the third direction and the first direction is less than 45°. 6. A pair-roll rolling mill with high precision and small gap regulation according to claim 1, characterized in that: the transmission mechanism comprises: The idler wheel assembly (304) can be respectively meshed with the gears on the two rollers in the roller-to-roller mechanism when the roller gap is adjusted. 7. A pair-roll rolling mill with high precision and small gap regulation according to claim 6, characterized in that: the idler assembly (304) comprises: The first idler wheel (3044) is fixedly installed on the frame; The second idler gear (3045) forms dynamic engagement with the first idler gear (3044) along its circumferential direction. 8. A pair-roll rolling mill with high precision and small gap regulation according to claim 7, characterized in that: the idler assembly (304) comprises: The idler frame (3041) has a fixed part and a movable part capable of circumferentially moving relative to the fixed part; The operating part is capable of driving the movable part on the idler frame (3041) to move relative to the fixed part when moving along its axis; The first idler wheel (3044) is installed on the movable part of the idler frame (3041), and the second idler wheel (3045) is installed on the fixed part. 9. A pair-roll rolling mill with high precision and small gap regulation according to claim 8, characterized in that: the idler assembly (304) comprises: A fixed frame (3042), installed on the frame; The connecting plate (3043), installed on the fixing frame (3042), has a pair of threaded holes; The operating part is a bolt (3049) that can fit into the threaded hole. 10. A pair-roll rolling mill with high precision and small gap regulation according to claim 9, characterized in that: the idler frame (3041) has a pair of waist-shaped grooves, and the idler frame (3041) is movable During the process, it can be fixed to the fixing frame (3042) by putting bolts into the waist groove (3048).