CN113798323A

CN113798323A - Control device and control method for implementing gapless steel pushing

Info

Publication number: CN113798323A
Application number: CN202010539006.1A
Authority: CN
Inventors: 苗旺; 王金华; 严加根
Original assignee: Shanghai Meishan Iron and Steel Co Ltd
Current assignee: Shanghai Meishan Iron and Steel Co Ltd
Priority date: 2020-06-13
Filing date: 2020-06-13
Publication date: 2021-12-17
Anticipated expiration: 2040-06-13
Also published as: DE112020007318T5; WO2021248751A1; CN113798323B

Abstract

The invention relates to a control device for implementing gapless steel pushing, which comprises a guide post (1), an oil cylinder support (2), a push plate (3), a bakelite plate (4), a locking plate (5), a locking block (6), a bolt (7), a slide block (8), a first spring (9), a left guide plate (10), a spring press plate (11), a spring guide post (12), a right guide plate (13), a bolt (14), an arc-shaped end surface (15), a support (16), a support roller (17), a support roller bearing (18), a bolt (19), a spacer ring (20), a bolt (21), a lining plate (22), a baffle plate (23) and a screw (24), the proposal solves the problems that the executing mechanism is easy to damage when the 10mm pickling and coil stripping are carried out, and the phenomena of loose core and coil scattering are caused by the friction between the steel coil and the winding drum, the coil stripping effect is improved, meanwhile, the quality of the steel strip plate is effectively controlled, and the purpose of improving the yield is achieved.

Description

Control device and control method for implementing gapless steel pushing

Technical Field

The invention relates to a blowing device, in particular to a control method for implementing gapless steel pushing, and belongs to the technical field of cold rolling equipment.

Background

At present, a coiler with a head-in jaw-type structure commonly adopted by acid pickling line coilers at home and abroad has the characteristics of high strength and difficult bending because the thickness of strip steel is generally thick, the Max reaches 10mm, and a group of push rod mechanisms are mostly added above or below a winding drum of the coiler in order to promote the control technology of ensuring coil shape after coil stripping of a pickled plate and preventing core pulling and coil loosening caused by coil stripping The strip shape is improved to prevent the strip steel from generating waist folding, a convex structure is arranged at the inlet of a coiling machine, a steering pinch roll with certain self-correcting capability and a side guide centering mechanism with strong centering effect are arranged, so that the condition that large core pulling and even loose coiling cannot be generated when the strip steel is coiled is met, once a relatively large overflowing edge exceeding 3mm is generated by a successful coiling and finishing person, a push rod mechanism arranged on the upper side and the lower side of a winding drum is easy to cause edge folding, and can be encountered in practical production use, and the small overflowing edge generated in coiling can generate a tower-shaped phenomenon due to the fact that a gap is generated by abrasion of a sliding block of the winding drum or uneven friction force between coiling layers causes relative displacement between layers of the steel coil in the transverse moving direction of the winding drum after the expansion and contraction process and in the coil unloading process, particularly, the uneven thrust causes severe abrasion of the carrier roller on the coil stripping trolley, and the steel coil after acid washing is scratched along with burrs, so that the surface quality defect is further caused. When the tower shape of the steel coil is large, coil unloading operation cannot be effectively carried out, and the accident that the coil falls to break equipment is very easy to occur, so that long-time shutdown rush repair is caused, the production continuity is not sufficient, the capacity of a unit is severely restricted, and the original technology and equipment cannot meet the field process requirements.

The prior art also discloses related technology disclosure, Chinese patent retrieval CN201310704408.2 discloses a strip steel coil tower-shaped eliminating device and method, a guide mechanism is arranged, so that a pressure plate can not incline due to the influence of stress in the pressing process, the pressure balance is ensured, the service life of the mechanism is only prolonged, and a sensor is further utilized to detect a strip steel coil and the pressure plate, so that the quality of the steel coil can be further controlled, and the automation of the elimination of the tower shape of the steel coil is realized. The patent has the obvious defects that the steel coil can be operated only by rotating the steel coil by 90 degrees by a set of overturning device, and the steel coil with larger overflowing edge can have folded edge in the operation process, so that the operation is inconvenient and quality accidents are easy to occur; furthermore, chinese patent CN201510582199.8 discloses a full-automatic eliminating device and method for tower shape of steel coil, such as CN201110320086.2 an operating method for controlling tower shape of inner and outer rings of steel coil, which are all measures taken during coiling, but the tower shape control effect caused by core pulling after coiling is not good, and it is obviously not suitable for cold rolling where the requirement for quality is very high, and especially not suitable for pickling line of direct finished product.

In addition, chinese patent 201611105898.4 "control device for preventing tower-shaped coil release" is a device that integrates the functions of supporting, following and stabilizing, effectively ensures that the steel coil will not loose coil, can improve the coil release effect, and controls the quality of the steel plate of the plate band to achieve the purpose of improving the yield. However, the technology needs a set of control program as a basis, the device adopts a cylinder compression method, the damage rate of the cylinder when a plurality of coil stripping devices of the unit are used is generally high, the cylinder needs to be found and replaced periodically in time, and the intangible investment capital is increased. Therefore, the invention provides a technology different from the above method on the basis of the urgent need for a device capable of preventing the unrolling, the unrolling and the tower-type rolling in a full mechanical mode, so that the main problems to be solved by the disclosed technology are similar to the technology but the technical scheme is different from the technology.

Disclosure of Invention

The invention provides a control method for implementing a gapless steel pushing control method and an implementation device aiming at the problems in the prior art, mainly solves the technical problems in the prior art which are difficult to solve on site, particularly solves the problems that an execution mechanism is easy to damage during 10mm acid pickling and coil stripping, and the friction between a steel coil and a winding drum causes the phenomena of loose core and loose coil, improves the coil stripping effect, effectively controls the quality of a steel strip plate, and achieves the purpose of improving the yield.

In order to achieve the purpose, the technical scheme of the invention is that the control device for implementing gapless steel pushing comprises a guide post, an oil cylinder support, a push plate, a bakelite plate, a locking block, a bolt, a slide block, a first spring, a left guide plate, a spring press plate, a spring guide post, a right guide plate, a bolt, an arc-shaped end surface, a support roller bearing, a bolt, a spacing ring, a bolt, a lining plate, a baffle plate and a screw,

the slider passes through 6 bolt fastening on the push pedal, and first spring quilt cover is connected through spring hold-down plate and left baffle, right baffle in the spring guide pillar, and spring hold-down plate is provided with a set of first spring that presses, and under the state that the guide pillar gos forward, the slider is followed the guide pillar and is gone forward, and the branch roller that sets up on the support is driven rotatoryly by the slider, and the slider is inclined to cut and is constantly extended along branch roller pivoted tangent point direction, and it is closely laminated with the reel under first spring action to reach slider bottom arc terminal surface. Before the previous strip steel is coiled, the position of a shearing point needs to be calculated according to the tonnage number to be sheared, the strip steel is sheared at the moment, after the coiling machine coils the previous strip steel, the next strip steel to be coiled reaches a coiling machine winding drum (31) along a contraction guide plate (28), at the moment, in order to ensure that the strip head is smoothly guided into a jaw, under the action of an oil cylinder (27), a sleeve lifting roller (29) converts the flat strip steel into a sleeve lifting strip steel (30), and the strip head is guided into the jaw at an angle of 15 degrees and is clamped tightly. The steel strip coiling machine rotates at a low speed, the contraction guide plate (28) retracts, the oil cylinder (27) lifts the sleeve roller (29), the sleeved steel strip (30) is straightened, and the auxiliary coiling supporting roller (32) is tightly attached to the steel strip on the coiling block (31) under the action of the oil cylinder (34).

In order to ensure the efficient performance of the spring, the first spring is arranged as follows: the total number of turns N1 is 20, wherein the effective number of turns is 18, the dextrorotation length L is 1771mm, the hardness reaches 45 after quenching and tempering, stress relief treatment is required, and the coefficient of stiffness K of the spring is 2.

Furthermore, the pitch between the first spring rings is 10.3mm, the total length is 190mm, the first spring rings can be compressed and divided into 3 sections, the 3 sections are 59.2mm, 91.1mm and 140.6mm respectively, and the corresponding elastic force is 200N, 400N and 500N.

The slider device is characterized in that the head part of the slider is chamfered to be R5, and the neck part of the slider is chamfered to be R10. The radian R305 of the bottom surface of the sliding block is equal to the beveling angle of the sliding block of 30 degrees, and the included angle between the bottom surface of the sliding block and the horizontal line is 15 degrees.

As an improvement of the invention, the control device also comprises a pinch roll, a steering roll, an oil cylinder, a contraction guide plate, a loop-rising roll, loop-rising band steel, a winding drum, a coiling-assistant supporting roll and a S-shaped component, wherein the inlet of the coiling machine is also provided with the steering pinch roll with certain self-correcting capability, the outlet of the steering roll is provided with a group of compression rolls for controlling loop quantity, and the coiling-assistant supporting roll is a supporting roll system consisting of two groups of guide rolls; the guide rollers bear the supporting blocks and are in bilaterally symmetrical S-shaped structures, the guide rollers are fixed on the S-shaped component through the frame supporting blocks by the pin shaft structures, and the two groups of guide rollers rotate along the pin shafts along with the large diameter of the steel coil and follow along with the change of the thrust of the hydraulic cylinder.

As an improvement of the invention, the control device also comprises a loop U-shaped carrier roller mounting seat, a compression bolt, a spring cavity and a second spring, wherein the depth and the width of a mounting groove in the middle of the base are designed to be matched with the U-shaped seat, the adjustment is free, the falling can be prevented, a jackscrew hole is additionally arranged on the side surface of the U-shaped seat, the stress in the strip steel direction during the correction adjustment of the carrier roller is counteracted, and the stable operation of the carrier roller is ensured; the left side and the right side of the bottom of the U-shaped seat are respectively provided with a spring cavity with a downward opening, a second spring is installed in the spring cavity, and two ends of the second spring respectively abut against the top and the installation groove of the spring cavity. When the carrier roller inclines, the tension of the strip steel on the carrier roller changes, and the self-correcting effect is achieved under the action of the two second springs.

A control method for implementing gapless steel pushing, comprising the following steps:

step 1: uncoiling → centering control of the whole process of the coiler,

step 2: the belt passes through the steering roller at a low speed, the belt head is forcibly bent and guided downwards,

and step 3: the steel strip reaches the jaw of the winding drum of the coiler along the telescopic guide plate, the sleeve amount roller presses down to control the micro sleeve amount of the steel strip,

and 4, step 4: the winding drum is rotated, the strip steel is led into the jaw,

and 5: the coiling drum of the coiler is opened, the plate strip steel is successfully clamped by the jaw opening,

step 6: rotating the reel to curl the strip steel along the outer circumference of the reel,

and 7: when the required length is reached, the reel stops rotating and contracts, the push plate device advances,

and 8: the push plate is infinitely close to the end face of the steel coil, the sliding block continuously moves downwards along the baffle plate along with the push plate in the walking process, the continuous elastic force recovery of the spring is realized by that the whole push plate device presses downwards to realize gapless close attachment to the winding drum,

and step 9: the plate pushing device moves along with the coil stripping trolley to realize gapless steel pushing,

step 10: and discharging the steel coil, retracting the push plate device and preparing for coil discharging of the next coil.

As an improvement of the invention, in step 1, in order to ensure the strip steel centering effect, an 8+1 centering control mode is adopted, wherein the control mode comprises 8 sets of CPC (Compound computer channel) deviation correcting devices and 1 set of EPC (electronic product code) edge inspection device to strictly control the running center of the strip steel to be superposed with the central line of a unit; 9# EPC patrols limit device precision and sets up at 1mm, in order to ensure 9# EPC control accuracy, improve original single piston rod into the equal-diameter double-piston rod structure to this comes the area difference of balanced rod end and cecum, the follow-up effect is better, it is further, 9# EPC motion control is detected by original only hydro-cylinder displacement, improve to servo valve case position detection + hydro-cylinder position detection double detection mode, it is short to reach response time, measured data is accurate, the good mesh of detection effect.

The step 1 is realized by improving the specific related equipment of the unit, including the deviation control of the uncoiler, the deviation control of the loop and the deviation control of the outlet section of the acid tank.

The deviation control of decoiler is crease-resistant roller wearing and tearing deviation control, through to crease-resistant roller body structural improvement, adopts the mode that increases the backing roll, slows down the belted steel deviation problem that unilateral wearing and tearing that the single roll leads to are big, the uneven initiation of contact force.

The roller system composed of the supporting roller and the crease-resist roller rotates oppositely to the supporting roller in the uncoiling process, is tightly attached and is consistent in abrasion. The backing roll quantity is 1 group 2, and the roll neck both sides all are provided with the bearing frame, and the clearance adjustment of being convenient for stops the card roller.

As an improvement of the invention, the roll diameter ratio of the turning roll to the pinch roll in the step 2 is 3: 1; the threading speed is 5 m/min; after the tension is built by the coiling machine, the tension building speed is 15 m/min.

As an improvement of the invention, in the step 3, the micro-sleeve amount of the strip steel is controlled to be L/COS10 DEG under the condition of sleeve amount rolling, wherein L is the length of the guide plate table.

As an improvement of the invention, in the step 4, the winding drum is rotated to form an angle of 15 degrees with the horizontal tangent of the winding drum, and the angle is the optimal leading-in angle of the strip steel to be led into the jaw.

As an improvement of the invention, in the step 6, the low-speed 2-ring winding roller is lifted, and the winding assisting press roller assists the winding supporting roller to press down; step 7, the plate pushing device advances, and a 15mm gap is required between the winding drum and the steel coil after the winding drum contracts, namely the inner ring is circular and the winding drum is in a retracting state; four sets of automatic mechanical follow-up clamping devices are arranged on the push plate device along the periphery of the winding drum; a certain included angle is formed between each set of clamping devices, the included angle of the first automatic mechanical follow-up clamping device (39-1) and the second automatic mechanical follow-up clamping device (39-2) is 60 degrees, the included angle of the second automatic mechanical follow-up clamping device and the third automatic mechanical follow-up clamping device (39-3) is 90 degrees, the included angle of the third automatic mechanical follow-up clamping device (39-3) and the fourth automatic mechanical follow-up clamping device (39-4) is 60 degrees, and the included angles of the first automatic mechanical follow-up clamping device and the fourth automatic mechanical follow-up clamping device are 60 degrees; the second and third automatic mechanical follow-up clamping devices are symmetrically distributed along the outer circumference direction of the winding drum.

As an improvement of the invention, the push plate device in the step 8 is applied to the sleeves with different cylinder diameters and different increasing diameters, the change of the spring force is controlled by the movement of the slide block, and the push plate is tightly attached to the outer circles of the winding drums and the increasing diameter sleeves with different sizes by the spring pressure and is adjusted in a stepless mode accordingly. In step 9, it is considered that a weak vibration is generated due to the unbalanced load, and the operation is kept stable and balanced. When the coil is unloaded, the push plate device follows the whole coil unloading process, the push plate device is provided with two symmetrical guide stabilizer bars, the device is driven by an oil cylinder, a middle trunnion type structure is adopted, the oil cylinder of the device is controlled by a servo valve, stepless voltage transformation is adopted for expansion and contraction of a winding drum, a relatively ideal pressure output value is determined according to the weight of a steel coil on site, and the optimal tension effect is achieved.

Compared with the prior art, the invention has the advantages that 1) the technical scheme has high control precision and strong capability; the invention has the advantages of stable system operation and simple and convenient operation, not only greatly improves the control effects of tower shape, uncoiling and uncoiling, but also greatly improves the plate shape quality, particularly rolls plate strip steel with extremely thick specification of 10 mm. The new control method and the implementation device provided by the invention can well meet the requirements of cold rolling, pickling and coil discharging, and 2) the edge folding phenomenon is avoided while the quality of the outer surface of the strip steel is improved; the appearance of loose rolls, loose rolls and tower-shaped rolls is basically avoided; 3) the scheme abandons the control parts of actuating mechanisms such as a cylinder and the like in the prior art, thereby saving the cost; 4) can be used on the same type of system in whole or in large part; the direct economic benefit in the expected year is more than 100 ten thousand yuan; the quality is determined in the market, the quality is from the perfection of the function of equipment and the improvement of the precision, the plum steel 1420 pickling line is mainly used for positioning and producing products with the thickness of 8.0mm, in order to obtain high-quality products, the problems of coil stripping, core pulling and loose coils caused by the fact that the pickling thickness is excessively thick and the strength is excessively high are effectively controlled in the experimental stage by the scheme, the occurrence rate of abnormal coils generated by coil stripping is 0.1 per mill, and the market requirements are completely met.

Drawings

FIG. 1 is a control flow diagram of the present invention;

FIG. 2 is a view of the position of the apparatus of the present invention mounted on a reel;

FIG. 3 is a schematic view of the arrangement of the apparatus of the present invention;

FIG. 4 is a partially enlarged view of the structure of the apparatus of the present invention;

FIG. 5 is an enlarged view of a portion of the connection of the pusher block of the apparatus of the present invention;

FIG. 6 is a schematic view of the connection between the push rod B-B and the guide post of the device of the present invention;

FIG. 7 is a schematic view of the apparatus of the present invention rotated at I;

FIG. 8 is a schematic view showing the state of the coiling control flow according to the present invention;

FIG. 9 is a schematic structural view of a loop U-shaped carrier roller mounting seat according to the present invention;

FIG. 10 is a schematic view of a slider structure of the apparatus of the present invention.

Wherein: 1-guide pillar; 2-oil cylinder support; 3-pushing the plate; 4-bakelite plate; 5-locking plate; 6-a locking block; 7-bolt; 8-a slide block; 9-a first spring; 10-making a guide plate; 11-spring press plate; 12-a spring guide post; 13-a right guide plate; 14-a bolt; 15-arc end face; 16-a support; 17-a support roller; 18-roller bearings; 19-bolt; 20-spacer ring; 21-bolt; 22-a liner plate; 23-a baffle plate; 24-a screw; 25-pinch rolls; 26-a turning roll; 27-oil cylinder; 28-a retracting guide plate; 29-a set-up roll; 30-jacketed strip steel; 31-a reel; 32-a wrapper support roller; 33-type component; 34-a wrapper cylinder; 35-loop U-shaped carrier roller mounting seats; 36-hold down bolts; 37-a spring chamber; 38-a second spring; 39-1, a first robot follow-up gripping device; 39-2, a second automatic mechanical follow-up clamping device, 39-3 and a third automatic mechanical follow-up clamping device; 39-4, fourth robot follow-up gripping device.

The specific implementation mode is as follows:

for the purpose of enhancing an understanding of the present invention, the present embodiment will be described in detail below with reference to the accompanying drawings.

Example 1: referring to fig. 1, a control device for implementing gapless steel pushing comprises a guide post 1, an oil cylinder support 2, a push plate 3, a bakelite plate 4, a locking plate 5, a locking block 6, a bolt 7, a slide block 8, a first spring 9, a left guide plate 10, a spring press plate 11, a spring guide post 12, a right guide plate 13, a bolt 14, an arc-shaped end surface 15, a support 16, a support roller 17, a support roller bearing 18, a bolt 19, a spacer ring 20, a bolt 21, a lining plate 22, a baffle plate 23 and a screw 24, wherein the slide block 8 is fixed on the push plate 3 through 6 bolts 14, the first spring 9 is sleeved in the spring guide post 12 and is connected with the left guide plate 10 and the right guide plate 13 through the spring press plate 11, the spring press plate 11 is provided with a group of pressing first springs 9, the slide block 8 moves forward along with the guide post 1 in a forward state of the guide post 1, the support roller 17 arranged on the support 16 is driven by the slide block 8 to rotate, the slide block 8 is obliquely cut and continuously extends along the direction of the tangent point of the rotation of the support roller 17 until the bottom arc-shaped end surface 15 of the slide block 8 is tightly attached to the winding drum 31 under the action of the spring 9. In order to ensure the high efficiency of the spring, the total number of turns N1 of the first spring 9 is 20, wherein the number of the effective turns is 18, the right-handed turning length L and the unfolding length L are 1771mm, the hardness of the first spring reaches 45 after the thermal refining treatment, the stress relief treatment is required, and the stiffness coefficient K of the first spring is 2.

The slider 8 device is characterized in that the head part of the slider is chamfered to be R5, and the neck part of the slider is chamfered to be R10. The radian R305 of the bottom surface of the sliding block is equal to the beveling angle of the sliding block of 30 degrees, and the included angle between the bottom surface of the sliding block and the horizontal line is 15 degrees.

Referring to fig. 8 and 9, the control device further comprises a pinch roller 25, a steering roller 26), an oil cylinder 27, a contraction guide plate 28, a loop-pulling roller 29, a loop-pulling strip steel 30, a winding drum 31, a coil-assisting supporting roller 32, a S-shaped member 33, a loop U-shaped carrier roller mounting seat 35, a hold-down bolt 36, a spring cavity 37 and a second spring 38, and is realized by improving the specific relevant equipment of the unit, including the deviation control of an uncoiler, the deviation control of a loop and the deviation control of an acid tank outlet section. The deviation control of decoiler is crease-resistant roller wearing and tearing deviation control, through to crease-resistant roller body structural improvement, adopts the mode that increases the backing roll, slows down the belted steel deviation problem that unilateral wearing and tearing that the single roll leads to are big, the uneven initiation of contact force. The roller system composed of the supporting roller and the crease-resist roller rotates oppositely to the supporting roller in the uncoiling process, is tightly attached and is consistent in abrasion. The backing roll quantity is 1 group 2, and the roll neck both sides all are provided with the bearing frame, and the clearance adjustment of being convenient for stops the card roller. The deviation control of the loop is additionally provided with a U-shaped loop carrier roller mounting seat 35, the depth and width of the mounting groove in the middle of the base are perfectly matched with those of the U-shaped seat, the adjustment is free, and the falling prevention can be realized. The support roller deviation correcting device is characterized in that a jackscrew hole is additionally formed in the side face of the U-shaped seat, so that stress in the direction of strip steel is counteracted when the support roller is corrected and adjusted, and stable operation of the support roller is guaranteed. The left side and the right side of the bottom of the U-shaped seat are respectively provided with a spring cavity 37 with a downward opening, a second spring 38 is installed in the spring cavity 37, and two ends of the second spring 38 are respectively abutted against the top of the spring cavity and the installation groove. Along with the deviation of the two sides of the carrier roller caused by the stress when the strip steel deviates, the U-shaped seat 35 pre-tensions the second springs 38 under the pressure of the strip steel, when the carrier roller inclines, the tension of the strip steel on the carrier roller changes, and the self-deviation-correcting effect is achieved under the action of the two second springs 38.

The deviation control of the outlet section of the acid tank is characterized in that turning pinch rolls 25 and 26 with certain self-deviation-correcting capability and a side guide centering mechanism with strong and quick centering effect are further arranged at the inlet of the coiling machine, the turning pinch rolls are of a medium-convex type and high-roughness structure with self-deviation correction, and the self-deviation control device is characterized in that the roughness is [ Ra3-5 ], and the medium-convex height is 1 mm; a group of compression rollers 29 for controlling the amount of the sleeve are arranged at the outlet of the steering roller, and the micro-sleeve effect is realized before the strip steel enters the jaw and is clamped, so that the centering effect and the jaw inserting effect of the strip steel (30) before coiling are met, and a larger included angle is formed between the strip steel and the horizontal central line of the coiling machine in the initial coiling state, so that the leading-in of a strip head and the auxiliary coiling are facilitated; in the coiling process, the adherence base number is controlled by a wrapper supporting roller 32 on the outlet side of the coiling machine, and the wrapper supporting roller 32 is a supporting roller system consisting of two groups of guide rollers; the guide rollers bear the supporting blocks and are in bilaterally symmetrical S-shaped structures, the guide rollers are fixed on the S-shaped component 33 through the frame supporting blocks by the pin shaft structures, and the two groups of guide rollers can rotate along the pin shafts along with the large diameter of the steel coil and follow along with the change of the thrust of the hydraulic cylinder.

The working process is as follows: referring to fig. 1-6, a control method for implementing gapless steel pushing comprises the following steps:

step 1: uncoiling → centering control of the whole process of the coiler,

and 8: the push plate is infinitely close to the end face of the steel coil, the slide block continuously moves downwards along the baffle plate along with the push plate in the walking process, the continuous elastic force recovery of the spring is realized by that the whole push plate device presses downwards to realize gapless close attachment to the winding drum,

Step 1, in order to ensure the centering effect of the strip steel, an 8+1 centering control mode is adopted, wherein the control mode comprises 8 sets of CPC (Compound computer processor) deviation correcting devices and 1 set of EPC (electronic product code) edge inspection device to strictly control the running center of the strip steel to be superposed with the central line of a unit; 9# EPC patrols limit device precision and sets up at 1mm, in order to ensure 9# EPC control accuracy, improve original single piston rod into the equal-diameter double-piston rod structure to this comes the area difference of balanced rod end and cecum, the follow-up effect is better, it is further, 9# EPC motion control is detected by original only hydro-cylinder displacement, improve to servo valve case position detection + hydro-cylinder position detection double detection mode, it is short to reach response time, measured data is accurate, the good mesh of detection effect.

In the step 2, the roll diameter ratio of the steering roll to the pinch roll is 3: 1; the threading speed is 5 m/min; after the tension is built by the coiling machine, the tension building speed is 15 m/min.

And 3, controlling the micro-sheathing quantity of the strip steel to be L/COS10 degrees in the step 3 by rolling down the sheathing quantity, wherein L is the length of the guide plate table.

In the step 4, the winding drum is rotated to form an included angle of 15 degrees with the horizontal tangent line of the winding drum, and the angle is the optimal leading-in angle of the strip steel to be led into the jaw;

in the step 6, the low-speed 2 snaring measuring roller 29 is lifted, and the coiling assisting press roller auxiliary-coiling supporting roller 32 is pressed down; step 7, the plate pushing device advances, and a 15mm gap is required between the winding drum and the steel coil after the winding drum contracts, namely the inner ring is circular and the winding drum is in a retracting state; four sets of automatic mechanical follow-up clamping devices are arranged on the push plate device along the periphery of the winding drum; a certain included angle is formed between each set of clamping devices, the included angle of the first automatic mechanical follow-up clamping device 39-1 and the second automatic mechanical follow-up clamping device 39-2 is 60 degrees, the included angle of the second automatic mechanical follow-up clamping device and the third automatic mechanical follow-up clamping device 39-3 is 90 degrees, the included angle of the third automatic mechanical follow-up clamping device 39-3 and the fourth automatic mechanical follow-up clamping device 39-4 is 60 degrees, and the first automatic mechanical follow-up clamping device and the fourth automatic mechanical follow-up clamping device are arranged; the second and third automatic mechanical follow-up clamping devices are symmetrically distributed along the outer circumference direction of the winding drum.

The push plate device in the step 8 is applied to the barrels with different diameters and the sleeves with different diameter increasing sizes, the change of the elastic force of the spring is controlled by the movement of the sliding block, and the push plate is tightly attached to the outer circles of the barrels with different sizes and the sleeves with different diameter increasing sizes by the pressure of the spring and is adjusted in a stepless mode accordingly. In step 9, it is considered that a weak vibration is generated due to the unbalanced load, and the operation is kept stable and balanced. When the coil is unloaded, the push plate device follows the whole coil unloading process, the push plate device is provided with two symmetrical guide stabilizer bars, the device is driven by an oil cylinder, a middle trunnion type structure is adopted, the oil cylinder of the device is controlled by a servo valve, stepless voltage transformation is adopted for expansion and contraction of a winding drum, a relatively ideal pressure output value is determined according to the weight of a steel coil on site, and the optimal tension effect is achieved.

Referring to fig. 8, the working process of the method for controlling the core pulling, coil loosening and tower shape of the steel coil during coil unloading of the winding drum with the jaw structure is as follows: the strip passes through the steering roller 26 at a low speed, and the strip head is forcibly bent by the pinch roller 25 and guided downwards into the telescopic guide plate 28; the steel strip reaches a jaw 31 of a coiler mandrel along a telescopic guide plate 28, and a sleeve lifting roller 29 presses down to control the strip steel micro-sleeve lifting amount 30; rotating the drum 31, and leading the strip steel 30 into the jaw; the coiler mandrel 31 is opened, and the plate strip steel 30 is successfully clamped by the jaw; rotating the reel 31 to curl the strip steel along the outer circumference of the reel 31; when the required length is reached, the winding drum 31 stops rotating and contracts, and the plate pushing device advances; the low-speed 2-ring sleeving amount control sleeve lifting roller 29 is lifted, and the coiling assisting press roller and auxiliary coiling support roller 32 are pressed down; the push plate device advances, and a 15mm gap is required between the winding drum and the steel coil after the winding drum contracts, namely the inner ring is circular and the winding drum is in a retraction state; the push plate device is provided with four sets of automatic mechanical follow-up clamping devices which are completely identical, namely 1, 2, 3 and 4, along the periphery of the winding drum, the drum diameters with different sizes and the sleeves with different diameter increasing sizes, the change of the elastic force of the spring is controlled by the movement of the sliding block, the push plate is tightly attached to the winding drums with different sizes and the outer circles of the diameter increasing sleeves by the spring pressure, and the push plate device is subjected to stepless adjustment along with the change of the elastic force of the spring. The push plate device ensures that the gap of the end face of the steel coil is uniform, and the steel coil is synchronously pushed out with the coil unloading trolley under the thrust action of the hydraulic cylinder.

It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent modifications and substitutions based on the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.

Claims

1. A control device for implementing gapless steel pushing is characterized by comprising a guide post (1), an oil cylinder support (2), a push plate (3), a bakelite plate (4), a locking plate (5), a locking block (6), a bolt (7), a slide block (8), a first spring (9), a left guide plate (10), a spring pressing plate (11), a spring guide post (12), a right guide plate (13), a bolt (14), an arc-shaped end surface (15), a support (16), a support roller (17), a support roller bearing (18), a bolt (19), a spacing ring (20), a bolt (21), a lining plate (22), a baffle plate (23) and a screw (24), wherein the slide block (8) is fixed on the push plate (3) through the bolt (14), the first spring (9) is sleeved in the spring guide post (12) and is connected with the left guide plate (10) and the right guide plate (13) through the spring pressing plate (11), spring plate (11) are provided with a set of first spring (9) of pressing, and under the state that guide pillar (1) gos forward, slider (8) are advanced along guide pillar (1), and set up branch roller (17) on support (16) and are driven the rotation by slider (8), and slider (8) are cut the chamfer and are constantly extended along branch roller (17) pivoted tangent point direction, and until slider (8) bottom arc terminal surface (15) and reel (31) closely laminate under spring (9) effect.

2. The control device for implementing gapless steel pushing according to claim 1, wherein the control device further comprises a pinch roll (25), a steering roll (26), an oil cylinder (27), a contraction guide plate (28), a loop-up roll (29), a loop-up strip steel (30), a winding drum (31), a wrapper-up backup roll (32) and an S-shaped member (33), the inlet of the coiler is also provided with the steering pinch rolls (25) and (26) with a certain self-correcting capability, the outlet of the steering roll is provided with a set of press rolls (29) with controlled amount, and the wrapper-up backup roll (32) is a backup roll system consisting of two sets of guide rolls; the guide rollers bear the supporting blocks and are in bilaterally symmetrical S-shaped structures, the guide rollers are fixed on the S-shaped component (33) through the pin shaft structures by the frame supporting blocks, and the two groups of guide rollers rotate along the pin shafts along with the large diameter of the steel coil and follow along with the change of the thrust of the hydraulic cylinder.

3. The control device for implementing gapless steel pushing according to claim 2, further comprising a loop U-shaped carrier roller mounting seat (35), a compression bolt (36), a spring cavity (37) and a second spring (38), wherein the depth and the width of a mounting groove in the middle of the base are designed to be matched with the U-shaped seat, the adjustment is free, the toppling can be prevented, a jackscrew hole is additionally formed in the side surface of the U-shaped seat, the stress in the strip steel direction during carrier roller deviation rectifying adjustment is counteracted, and the stable running of the carrier roller is guaranteed; the left side and the right side of the bottom of the U-shaped seat are respectively provided with a spring cavity (37) with a downward opening, a second spring (38) is installed in the spring cavity (37), and two ends of the second spring (38) are respectively abutted to the top and the installation groove of the spring cavity.

4. A control method for implementing gapless steel pushing by using the control device of any one of claims 1 to 3, which is characterized by comprising the following steps:

step 1: uncoiling → centering control of the whole process of the coiler,

5. The control method for implementing gapless steel pushing according to claim 4, wherein in the step 1, in order to ensure the centering effect of the strip steel, an 8+1 centering control mode is adopted, and the control mode comprises 8 sets of CPC (Compound computer channel) deviation rectifying devices and 1 set of EPC (electronic product code) edge inspection devices to strictly control the running center of the strip steel to be coincided with the central line of a unit; the precision of the 9# EPC edge patrol device is set at 1 mm.

6. The control method for implementing gapless steel pushing according to claim 5, wherein the roll diameter ratio of the steering roll to the pinch roll in the step 2 is 3: 1; the threading speed is 5 m/min; after the tension is built by the coiling machine, the tension building speed is 15 m/min.

7. The control method for implementing gapless steel pushing according to claim 6, wherein the micro-sleeving amount of the steel strip under the sleeving roller in the step 3 is controlled to be L/COS10 degrees, wherein L is the length of the guide plate platform.

8. The control method for implementing gapless steel pushing according to claim 7, wherein the angle between the rotating reel and the horizontal tangent of the reel in the step 4 is 15 degrees, and the angle is the optimal leading-in angle of the strip steel to be led into the jaw.

9. The control method for implementing gapless steel pushing according to claim 8, wherein in the step 6, the low-speed 2-ring winding amount roller (29) is lifted, and the winding assisting press roller and the auxiliary winding support roller (32) are pressed down; step 7, the plate pushing device advances, and a 15mm gap is required between the winding drum and the steel coil after the winding drum contracts, namely the inner ring is circular and the winding drum is in a retracting state; four sets of automatic mechanical follow-up clamping devices are arranged on the push plate device along the periphery of the winding drum; a certain included angle is formed between each set of clamping devices, the included angle of the first automatic mechanical follow-up clamping device (39-1) and the second automatic mechanical follow-up clamping device (39-2) is 60 degrees, the included angle of the second automatic mechanical follow-up clamping device and the third automatic mechanical follow-up clamping device (39-3) is 90 degrees, the included angle of the third automatic mechanical follow-up clamping device (39-3) and the fourth automatic mechanical follow-up clamping device (39-4) is 60 degrees, and the included angles of the first automatic mechanical follow-up clamping device and the fourth automatic mechanical follow-up clamping device are 60 degrees; the second and third automatic mechanical follow-up clamping devices are symmetrically distributed along the outer circumference direction of the winding drum.

10. The control method for implementing gapless steel pushing according to claim 6, wherein the push plate device of step 9 is provided with two symmetrical guiding stabilizer bars, the push plate device is driven by an oil cylinder, the middle trunnion type structure is adopted, the oil cylinder of the push plate device is controlled by a servo valve, the expansion and contraction pressure of the winding drum adopts stepless pressure variation, and a more ideal pressure output value is determined according to the weight of the steel coil on site.