A straightening machine for continuously adjusting the shape of a strip

Abstract

The application discloses a straightening machine for continuously adjusting strip shape, comprising an upper roller box, a lower roller box, an inclination driving mechanism and a bending roller mechanism, the inclination driving mechanism comprises a first driver, the first driver arranged in the transverse direction is drivingly connected with the upper roller box to adjust the transverse inclination of the upper working roller, the first driver arranged in the longitudinal direction is drivingly connected with the upper roller box to adjust the longitudinal inclination of the upper working roller, a plurality of lower roller systems are arranged in the longitudinal direction, the bending roller mechanism comprises a plurality of wedge units and a second driver, the lower roller system is assembled on the wedge unit, each second driver is drivingly connected with the corresponding wedge unit to drive the lower working roller of the corresponding lower roller system to rise or fall to adjust the height of the lower working roller of each lower roller system, under the servo load, the strip steel is continuously adjusted in the longitudinal direction and the transverse direction in real time to straighten the bad strip shape of the strip steel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of strip finishing, in particular to a straightening machine for continuously adjusting strip shape. BACKGROUND

[0002] The straightening machine is used for flattening and straightening the steel coil after rolling or heat treatment, or pre-straightening the steel coil before heat treatment, to obtain a finished product (such as a plate or a strip) with good flatness, and is mainly divided into two straightening schemes.

[0003] One of the straightening schemes is to cut the steel coil into single plates with a plate length of less than 20m first, and then straighten the single plates, and in the process of straightening the single plates, the head and tail of each single plate have an empty straightening area (i.e. an area that cannot produce straightening effect or cannot form effective bending in the half pitch range of the head and tail), which not only reduces production efficiency, but also affects the overall plate shape quality of the plate.

[0004] The other straightening scheme is to use a steel coil continuous straightening technology, and the specific process is to continuously straighten the steel coil after uncoiling, and then cut the straightened steel coil into plates, and at this time, the empty straightening area is limited to the half pitch range of the head and tail of the steel coil, which solves the problems encountered in the straightening of single plates, but in the process of continuous straightening of the steel coil, since the length of the steel coil is very long (more than 1000m), the initial plate shape of the head, middle and tail of the steel coil differs greatly, and it is easy to produce adverse plate shapes such as single-sided wave, middle wave, double-sided wave or 1 / 4 wave, and the existing steel coil continuous straightening technology cannot effectively straighten such adverse plate shapes. SUMMARY

[0005] Therefore, the present application provides a straightening machine for continuously adjusting strip shape, which effectively straightens corresponding adverse plate shapes by transverse and longitudinal inclination of the upper roller system and positive and negative bending of the working roller of the lower roller system.

[0006] To achieve the above object, the technical scheme provided by the present application is as follows:

[0007] A straightener for continuously adjusting the shape of a strip includes an upper roll box with an upper roll system, a lower roll box with a plurality of lower roll systems, a tilting drive mechanism for driving the tilting of the upper roll box, and a roll bending mechanism assembled in the lower roll box, the tilting drive mechanism includes first drives arranged symmetrically, first drives arranged transversely cooperatively drive and connect the upper roll box to adjust the transverse tilting of the upper work rolls of the upper roll system, first drives arranged longitudinally cooperatively drive and connect the upper roll box to adjust the longitudinal tilting of the upper work rolls of the upper roll system, the plurality of lower roll systems of the lower roll box are arranged longitudinally, the roll bending mechanism includes a plurality of wedge units cooperatively arranged with the lower roll systems and second drives cooperatively arranged with each wedge unit, the lower roll systems are assembled on the wedge units, each second drive respectively drives and connects a corresponding wedge unit to drive the upper work rolls of the corresponding lower roll system to rise or fall to respectively adjust the height of the lower work rolls of each lower roll system.

[0008] Further, the adjustment range of the transverse tilting is -1.5 degrees to +1.5 degrees.

[0009] Further, the adjustment range of the longitudinal tilting is -2 degrees to +2 degrees.

[0010] Further, the adjustment range of the height of the lower work rolls of the lower roll system is +5 mm to -3 mm.

[0011] Further, the number of the first drives is at least 4, the first drives are arranged in multiple directions to at least form a transverse and longitudinal side-by-side arrangement.

[0012] Further, a frame is further included, the tilting drive mechanism further includes an upper cross beam, the first drives are fixedly assembled on the frame, the upper cross beam is fixedly assembled on the drive shafts of the first drives, and the upper roll box is fixedly assembled on the upper cross beam.

[0013] Further, the first drives are press-down cylinders.

[0014] Further, the wedge unit includes an upper wedge and a lower wedge cooperatively arranged to slide, the lower roll system is assembled on the upper wedge, and the lower wedge is slidably assembled on the lower roll box, the second drive drives and connects the lower wedge to drive the lower wedge to slide, and in turn drives the upper wedge to rise or fall to adjust the height of the lower work rolls of the lower roll system.

[0015] Further, the roll bending mechanism further comprises a screw rod, a coupling and an encoder matched with each wedge unit, the second driver is a motor, one end of the screw rod is arranged through the lower wedge of the wedge unit and is threadedly connected with each other, the other end of the screw rod and the rotating shaft of the motor are connected through the coupling, and the encoder is arranged at the end of the screw rod away from the coupling.

[0016] The technical scheme provided by the present application has the following beneficial effects:

[0017] The upper roll box is tilted and pressed in the transverse direction through cooperation and driving of the first drivers arranged in the transverse direction, so as to adjust the transverse inclination of the upper roll system, thereby realizing straightening of the single-side wave and other bad plate shapes of the strip steel.

[0018] Further, the working roll of the lower roll system is raised and lowered through cooperation and driving of each second driver to drive the corresponding wedge unit to move correspondingly, so as to adjust the height of the working roll of each lower roll system, so that the working roll of the lower roll system is positively curved or negatively curved, thereby realizing straightening of the double-side wave, middle wave or 1 / 4 wave and other bad plate shapes of the strip steel. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 1 shows the structure of the straightening machine for continuously adjusting the plate shape of the strip steel in the left and right directions in the embodiment;

[0020] Figure 2 Fig. 2 shows the structure of the straightening machine for continuously adjusting the plate shape of the strip steel in the front and rear directions in the embodiment;

[0021] Figure 3 Fig. 3 shows the partial structure of the straightening machine for continuously adjusting the plate shape of the strip steel in the left and right directions in the embodiment;

[0022] Figure 4 Fig. 4 shows the partial structure of the straightening machine for continuously adjusting the plate shape of the strip steel in the positive or negative bending in the embodiment;

[0023] Figure 5 Fig. 5 shows the structure of the straightening machine for continuously adjusting the plate shape of the strip steel when the upper roll system is tilted in the left and right directions in the embodiment;

[0024] Figure 6 Fig. 6 shows the partial structure of the straightening machine for continuously adjusting the plate shape of the strip steel when the upper roll system is tilted in the front and rear directions in the embodiment. DETAILED DESCRIPTION

[0025] For further illustration of the embodiments, the present application provides the accompanying drawings. These drawings are part of the disclosure of the present application, which mainly serve to illustrate the embodiments, and can be explained in conjunction with the related description of the specification to understand the operating principle of the embodiments. Those of ordinary skill in the art should understand other possible implementations and advantages of the present application in conjunction with these. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] The present application is further illustrated in conjunction with the accompanying drawings and specific embodiments.

[0027] Referring to Figures 1 to 6 The present embodiment provides a straightening machine (hereinafter collectively referred to as a straightening machine) for continuously adjusting the shape of a strip, which includes an upper roll box 1 having an upper roll system 11, a lower roll box 2 having five lower roll systems 21, an inclination driving mechanism 3 for driving the inclination of the upper roll box 1, and a bending roll mechanism 4 assembled in the lower roll box 2. The inclination driving mechanism 3 includes first drivers 31 arranged symmetrically, first drivers 31 arranged transversely cooperatively and drivingly connected to the upper roll box 1 to adjust the transverse inclination β of the upper work roll 111 of the upper roll system 11, and first drivers 31 arranged longitudinally cooperatively and drivingly connected to the upper roll box 1 to adjust the longitudinal inclination θ of the upper work roll 111 of the upper roll system 11. The plurality of lower roll systems 21 of the lower roll box 2 are arranged longitudinally, and the bending roll mechanism 4 includes five wedge units 42 cooperatively connected to the lower roll systems 21 and second drivers 41 cooperatively connected to each wedge unit 42. The lower roll systems 21 are assembled on the wedge units 42, and each second driver 41 is drivingly connected to the corresponding wedge unit 42 to drive the upper work roll 211 of the corresponding lower roll system 21 to rise or fall to adjust the height of the lower work roll 211 of each lower roll system 21.

[0028] In the present embodiment, the upper roll system 11 includes an upper support roll 112 cooperatively connected to the upper work roll 111, and the first drivers 31 are press cylinders. The number of first drivers 31 is four, and the first drivers 31 are arranged in two directions to form transverse and longitudinal arrangements. The transverse direction is the width direction of the strip, which is also the front and rear direction. In addition, the longitudinal direction is the length direction of the strip, which is also the left and right direction.

[0029] When the strip has a single-sided wave or other undesirable shape, the upper roll box 1 is tilted and pressed in the transverse direction by the first drivers 31 arranged transversely cooperatively and drivingly connected to the upper roll box 1 to adjust the transverse inclination β of the upper roll system 11 as shown in Figure 6 to straighten the single-sided wave or other undesirable shape of the strip.

[0030] When the strip has a single-sided wave or other undesirable shape, the upper roll box 1 is tilted and pressed in the transverse direction by the first drivers 31 arranged transversely cooperatively and drivingly connected to the upper roll box 1 to adjust the transverse inclination β of the upper roll system 11 as shown inFigure 5 The longitudinal inclination θ of the upper roll system 11 is shown to achieve straightening of the strip steel in the longitudinal direction.

[0031] When the strip steel has a double wave, a middle wave or a 1 / 4 wave, etc., each second driver 41 drives the corresponding wedge unit 42 to move, and then drives the corresponding lower work roll 211 of the lower roll system 21 to rise or fall, so as to adjust the height of the lower work roll 211 of each lower roll system 21, so that the lower work roll 211 of the lower roll system 21 is curved in a positive direction 6 or a negative direction 7, and then the double wave, the middle wave or the 1 / 4 wave, etc. of the strip steel is straightened.

[0032] The straightening machine is servo-pressed by the pressing cylinders, and in the straightening process, the strip steel is continuously adjusted in longitudinal and transverse directions in real time, so as to achieve straightening of the strip steel, and the structure is simple, the response is fast, the precision is high, and the maintenance is convenient.

[0033] Of course, in other embodiments, the number of first drivers 31 can also be 6, 8 or other numbers and arranged in multiple arrays, which will not be described here.

[0034] In another preferred embodiment, the straightening machine further comprises a rack 5, and the inclination driving mechanism 3 further comprises an upper beam 32, the first driver 31 is fixedly assembled on the rack 5, and the upper beam 32 is fixedly assembled on the driving shaft of the first driver 31, and the upper roll box 1 is fixedly assembled on the upper beam 32.

[0035] In the specific embodiment, the pressing cylinders are hydraulic cylinders of the prior art, and the four pressing cylinders are fixedly installed on the rack 5 according to the positions of the four corners of the square, and the posture of the upper beam 32 is adjusted by controlling the extension and retraction of the driving shafts or the extension and retraction ends of the four pressing cylinders in the upward and downward directions, and then the inclination of the upper roll box 1 in the transverse or longitudinal direction is achieved.

[0036] As shown in the figure, Figure 6 When it is necessary to adjust the transverse inclination β, the pressing cylinders arranged in the transverse direction (i.e. in the front and rear directions) are divided into two groups, each group including two pressing cylinders, the driving shafts of the front pressing cylinders in each group are extended downward (or retracted upward), and the driving shafts of the rear pressing cylinders in each group are retracted upward (or extended downward), so as to incline the upper beam 32 forward (or backward) in the transverse direction, so as to incline the upper roll system 11 of the upper roll box 1 forward (or backward) in the transverse direction and apply a certain straightening load, so as to press down and straighten the raised edge of the strip steel on the front side or the rear side, so as to achieve transverse inclination adjustment, and then the plate shape defects of the straightened strip are determined by manual visual inspection or a plate shape measuring instrument.

[0037] Further preferably, the adjustment range of the transverse inclination β is -1.5 degrees to +1.5 degrees, so as to precisely adjust the transverse inclination of the strip.

[0038] As shown in FIG. 1, when it is necessary to adjust the transverse inclination β, the press-down cylinders arranged in the transverse direction (i.e. in the left and right directions) are divided into two groups, each group including two press-down cylinders, the driving shafts of the right press-down cylinders in each group are all extended downward (or retracted upward), and the driving shafts of the left press-down cylinders in each group are all retracted upward (or extended downward), so as to tilt the upper cross beam 32 to the right (or to the left) in the transverse direction, so as to tilt the upper roll system 11 of the upper roll box 1 to the right (or to the left) in the transverse direction and apply a certain straightening load, so as to straighten the bending of the strip to the left or to the right, so as to achieve the transverse inclination adjustment, and then the plate shape defects of the straightened strip are determined by manual visual inspection or a plate shape measuring instrument. Figure 5 Further preferably, the adjustment range of the transverse inclination β is -1.5 degrees to +1.5 degrees, so as to precisely adjust the transverse inclination of the strip.

[0039] In another preferred embodiment, the wedge unit 42 includes an upper wedge 421 and a lower wedge 422 which are slidably matched, the lower roll system 21 is assembled on the upper wedge 421, the lower wedge 422 is slidably assembled on the lower roll box 2, and the second driver 41 is drivingly connected to the lower wedge 422, so as to drive the lower wedge 422 to slide, and in turn drive the upper wedge 421 to ascend or descend, so as to adjust the height of the lower work roll 211 of the lower roll system 21.

[0040] More specifically, the bending roll mechanism 4 further includes a lead screw 43, a coupling 44 and an encoder 45 matched with each wedge unit 42, the second driver 41 is a motor, the left ends of the lead screws 43 are arranged through the lower wedges 422 of the wedge units 42 and are threadedly connected to each other, the right ends of the lead screws 43 and the rotating shaft of the motor are connected through the coupling 44, and the encoder 45 is assembled on the left end of the lead screw 43.

[0041]

[0042] ​In the specific embodiment, the lower wedge 422 includes two first and second lower wedges symmetrically arranged on the left and right, and the first and second lower wedges are provided with a mounting slot hole matched with the lead screw 43 and a nut fixedly fitted in the mounting slot hole. The left end of the lead screw 43 is sequentially arranged in the mounting slot hole and the nut of the first and second lower wedges, and is threadedly connected with the nut of the first and second lower wedges, respectively, and then is connected with the encoder 45 to realize real-time monitoring of the moving distance of the lead screw 43 by the encoder 45, thereby accurately adjusting the height of the lower work roll 211 of the lower roller system 21. The right end of the lead screw 43 is drivingly connected with the rotating shaft of the motor through the coupling 44. In addition, the lower roller system 21 includes a lower support roll 212 matched with the lower work roll 211, and the lower work roll 211 is arranged above the lower support roll 212, and the lower support roll 212 is fitted on the upper wedge 421 through a support roll seat 22.

[0043] As shown in Figure 4 When it is necessary to adjust the height of the lower work roll 211 of each lower roller system 21, the driving shaft of the motor is rotated to drive the coupling 44 and the lead screw 43 to rotate correspondingly, thereby driving the lower wedge 422 to slide or move correspondingly, to realize the lifting and lowering movement of the upper wedge 421, and to drive the lower support roll 212 of each segment (corresponding to each lower roller system 21) to lift or lower under the straightening load, so that the corresponding lower work roll 211 is pre-set with a certain amount of bending amount, that is, the height of the lower work roll 211 of each lower roller system 21 is adjusted, to form the lower work roll 211 of each lower roller system 21 to be positively curved 6 or negatively curved 7 (that is, the lower work roll 211 of each lower roller system 21 is positively or negatively bent), thereby realizing the straightening of the double wave, middle wave or 1 / 4 wave and other undesirable plate shapes of the strip steel, and then the plate shape defects of the straightened strip are determined by manual visual inspection or plate shape measuring instrument.

[0044] Further, the adjustment range of the height of the lower work roll 211 of the lower roller system 21 is +5mm to -3mm, to accurately straighten the plate shape of the strip steel.

[0045] Of course, in other embodiments, the specific number of lower roller systems 21 of the lower roller box 2 can also be 6 or 7, and the number of corresponding wedge units 42 and the second drivers 41, lead screws 43, couplings 44 and encoders 45 matched with each wedge unit 42 can also be 6 or 7, which will not be described in detail here.

[0046] Although the present application is specifically shown and introduced in combination with the preferred embodiments, it should be understood by those skilled in the art that various changes can be made in form and details without departing from the spirit and scope of the present application defined in the appended claims, and all such changes are within the protection scope of the present application.

Claims

1. A continuous adjustment strip shape straightener, comprising an upper roller box with an upper roller system, a lower roller box with a plurality of lower roller systems, a tilt driving mechanism for driving the tilt of the upper roller box, and a bending roller mechanism assembled in the lower roller box, characterized in that: the tilt driving mechanism comprises first drivers arranged symmetrically; the first drivers arranged transversely cooperate and drive the upper roller box to adjust the transverse tilt of the upper work rollers of the upper roller system; the first drivers arranged longitudinally cooperate and drive the upper roller box to adjust the longitudinal tilt of the upper work rollers of the upper roller system; the plurality of lower roller systems of the lower roller box are arranged longitudinally, the bending roller mechanism comprises a plurality of wedge units cooperating with the lower roller systems and second drivers cooperating with each wedge unit, and the lower roller systems are assembled on the wedge units; each second driver drives the corresponding wedge unit, and in turn drives the lower work rollers of the corresponding lower roller system to rise or fall to adjust the height of the lower work rollers of each lower roller system; the first drivers are press cylinders; the adjustment range of the transverse tilt is -1.5 degrees to +1.5 degrees; when the local strip is unilaterally wavy, the upper roller box is tilted and pressed in the transverse direction by the first drivers arranged transversely to adjust the transverse tilt of the upper roller system, so as to straighten the unilateral wave shape of the strip. The adjustment range of the longitudinal tilt is -2 degrees to +2 degrees. The adjustment range of the height of the lower work rollers of the lower roller system is +5 mm to -3 mm. The number of first drivers is at least 4, and the first drivers are arranged in multiple directions to form at least transverse and longitudinal arrangements. It also comprises a rack, and the tilt driving mechanism further comprises an upper beam, the first drivers are fixedly assembled on the rack, the upper beam is fixedly assembled on the drive shafts of the first drivers, and the upper roller box is fixedly assembled on the upper beam. The wedge unit comprises an upper wedge and a lower wedge that can cooperate and slide, the lower roller system is assembled on the upper wedge, and the lower wedge is slidably assembled on the lower roller box; the second driver drives the lower wedge to drive the lower wedge to slide, and in turn drives the upper wedge to rise or fall to adjust the height of the lower work rollers of the lower roller system. The bending roller mechanism further comprises a lead screw, a coupling and an encoder cooperating with each wedge unit, the second driver is a motor, one end of the lead screw penetrates the lower wedge of the wedge unit and is threadedly connected with each other, the other end of the lead screw and the rotating shaft of the motor are connected through the coupling; and the encoder is assembled at the end of the lead screw away from the coupling.

2. A continuous strip shape control leveler as defined in claim 1 wherein: ​ 3. A continuous strip shape control leveler as defined in claim 1 wherein: ​ 4. The continuous strip shape rectifier of claim 1, wherein: ​ 5. A continuous strip shap er according to any of claims 1-4, characterized in that: ​ 6. A continuous strip shapmg straightener according to any of claims 1-4, characterized in that: ​ 7. A continuous strip shape rectifier according to claim 6, characterized in that: ​

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