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CN113145638B - Variable cross-section multi-section continuous five-continuous rolling system - Google Patents

Variable cross-section multi-section continuous five-continuous rolling system Download PDF

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Publication number
CN113145638B
CN113145638B CN202110427226.XA CN202110427226A CN113145638B CN 113145638 B CN113145638 B CN 113145638B CN 202110427226 A CN202110427226 A CN 202110427226A CN 113145638 B CN113145638 B CN 113145638B
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rolling
vertical
section
flat
variable cross
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CN113145638A (en
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刘振安
赵胜杰
徐志祥
郭长奎
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Henan Kaiyin Machinery Equipment Technology Co ltd
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Henan Kaiyin Machinery Equipment Technology Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/12Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel in a continuous process, i.e. without reversing stands

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

The invention discloses a variable cross-section multi-section continuous five-continuous-rolling system which comprises a vertical rolling device and a flat rolling device, wherein the vertical rolling device and the flat rolling device respectively comprise a primary shaping vertical rolling device, a primary variable cross-section flat rolling device, a depth variable cross-section flat rolling device, a trimming vertical rolling device and a trimming variable cross-section flat rolling device according to a processing sequence, and a transmission mechanism is arranged among the devices to form a continuous production line. The output end thickness curve and length curve of each rolling procedure are used as the initial thickness and length values input by the next procedure, the values are combined with the position detection data of the next rolling mill to determine the coordinate points of the rolling process of the next rolling mill, a basis is provided for the initial parameter configuration of the next rolling mill, meanwhile, the control system collects the length curve data and the thickness curve data of each rolling mill to draw the rolling contour graph of each rolling mill, the rolling contour graph is corrected by comparing the input and output length changes and the thickness changes of each rolling mill, and then the rolling contour graph is used as the initial thickness and length values input by the next procedure.

Description

Variable cross-section multi-section continuous five-continuous rolling system
Technical Field
The invention belongs to the technical field of automobile plate spring rolling equipment, and particularly relates to a variable-section multi-section continuous rolling mill system.
Background
The steel plate spring is an important component of an automobile suspension system and plays a role in transmitting and buffering all force and moment between a frame and wheels. The currently used leaf spring of the steel plate spring has a uniform cross-section structure and a variable cross-section structure. The automobile steel plate spring mostly adopts the form of a plurality of ordinary leaf springs with equal cross sections, all the leaf springs are sequentially overlapped and then fastened through a central bolt to form a leaf spring assembly, and the leaf springs are mutually contacted, so that friction can be generated, and the service life of the leaf springs is influenced. In addition, the common multi-leaf steel plate spring with the uniform cross section has heavy weight, is troublesome to assemble and disassemble, is limited in some application occasions, and cannot well meet the use requirement. The improved variable cross-section plate spring is a novel plate spring, the reeds are hardly contacted, and the improved variable cross-section plate spring has the advantages of small friction, fatigue resistance, long service life, material saving and the like, can obviously improve the running stability of an automobile, and is an automobile component assembly with wide application prospect.
The variable cross-section plate spring is the main development trend of light weight of the steel plate spring, and the short cone rolling mill is one of main equipment for manufacturing the variable cross-section plate spring. The rolls are important parts of a rolling mill, and are tools for rolling a steel material by using pressure generated when a pair or a group of rolls roll, and are important consumable parts for determining the efficiency of the rolling mill and the quality of the rolled material. The automobile steel plate spring is a main elastic element of an automobile suspension system, and transmits force and moment in all directions of a frame and an automobile body during automobile running. With the development of economy, energy supply is increasingly tense, and improvement of riding comfort and light weight of the whole automobile are development trends in the present and future.
The traditional automobile plate spring variable cross-section rolling mill adopts single-end heating, single-end multiple rolling (1-8 passes), and variable cross-section rolling can be completed only by heating twice, so that the consumption of natural gas is high, the efficiency is low, and energy is wasted.
The variable cross-section straight-through multi-sheet rolling mill with the publication number of CN 112024600A is rolling equipment which is developed by the same group of inventors of the project and aims at smaller cross-section thickness, in the scheme, the rolling mechanism comprises a rolling mill frame, a servo hydraulic cylinder, an upper roller and a lower roller, the rolling mill frame comprises a front side wall and a rear side wall (or frames), vertical sliding grooves are respectively arranged at symmetrical positions of the two side walls, two ends of the upper roller are sleeved in the corresponding vertical sliding grooves in a matching mode through a lifting bearing box, and a vertical guide structure is arranged between the lifting bearing box and the vertical sliding grooves. After the equipment is connected with a spring flat steel rolling line, a plurality of variable cross-section plate springs can be continuously rolled by utilizing the waste heat of 900-950 ℃ of a finished spring flat steel product rolled by a finished product frame, and the variable cross-section plate springs can be directly rolled according to the continuous action of the product shape, the technical scheme adopts the continuous rolling after flattening, and is only suitable for rolling the spring flat steel with the blank steel plate thickness of less than 30mm and the position variation of not more than 15mm, but the position variation required to be rolled is more than 15mm when the steel plate thickness is more than 30mm, for example, the common automobile plate spring model is the steel plate thickness of 45mm and the position variation of 25mm, if the technical scheme is adopted, the factors of insufficient weight of a compression roller and overlarge radian caused by small quality and diameter of the roller cannot be effectively solved, so that the variable cross-section continuous rolling operation cannot be carried out on the steel plate with the thickness of more than 30mm and the position variation of more than 15mm, meanwhile, the position variation of the thick steel plate cannot be increased by simply improving the weight of the roller, the increase of the mass of the roller can cause the whole volume to be enlarged, and further the radian of the arc surface is changed, so that the roller is not suitable for the requirement of variable cross-section size any more.
A variable cross-section straight-through single-piece rolling mill with the publication number of CN 112024599A is rolling equipment which is developed by the same group of inventors and is only suitable for single (cut to a standard length in advance) steel plates to be subjected to first standing and then leveling, the scheme is that a plate spring hot blank is sequentially passed through a plate spring vertical rolling mill and a plate spring flat rolling mill combined system to form a standard variable cross-section automobile plate spring, the vertical rolling mill system and the flat rolling mill system respectively comprise a respective driving mechanism, a transmission mechanism and a rolling mechanism, the vertical rolling mill mechanism comprises a mill frame, the bottom of the inner side of the mill frame is matched and sleeved with a horizontal type mill frame, a pair of left and right rollers are arranged in the mill frame, servo hydraulic cylinders are respectively and fixedly arranged at two ends of the mill frame to change rolling gaps between the left and right rollers, each single plate is sequentially passed through the plate spring vertical rolling mill to form a shuttle shape, the automobile plate spring which is subjected to variable cross-section rolling through the plate flat rolling mill to form the standard automobile plate spring flat rolling, the technical scheme can not realize continuous rolling type processing of the blank steel plate, and still has the technical problems of limited rolling thickness and position variation.
Disclosure of Invention
Aiming at the technical problems existing in the traditional steel plate variable cross-section rolling process and the technical problem that the variable cross-section rolling mill in the technical scheme with the publication number of CN 112024600A can not realize the variable cross-section continuous rolling operation on the spring flat steel with the thickness of more than 30mm and the position variation of more than 15mm, the variable cross-section multi-section continuous five-continuous rolling system is provided, is particularly suitable for rolling the automobile plate spring with the cross-section thickness of 30-60mm, and achieves the purposes of accuracy, high efficiency and energy conservation.
The technical scheme adopted by the invention for solving the technical problems is as follows: a variable cross-section multi-section continuous five-continuous-rolling system comprises a vertical rolling device and a flat rolling device, and respectively comprises a primary shaping vertical rolling device, a primary variable cross-section flat rolling device, a depth variable cross-section flat rolling device, a trimming vertical rolling device and a trimming variable cross-section flat rolling device according to a processing sequence, wherein transmission mechanisms are arranged among the devices to form a continuous production line.
The front inlet and the rear outlet of the primary shaping vertical rolling device are respectively provided with a clamping and conveying mechanism and a thickness measuring mechanism, the control system calculates the volume of the flat steel according to the thickness information provided by the thickness measuring mechanism, determines the rolling standard and controls the press-in amount of the vertical rollers at two sides, the left and right vertical rollers of the primary shaping vertical rolling device are utilized to roll two side surfaces of the blank steel plate, the control system starts a servo hydraulic cylinder linked with each vertical roller according to the end position information, controls the left and right servo hydraulic cylinders to gradually pressurize and depressurize the two vertical rollers inwards, so that the blank steel plate is rolled into a continuous or single shuttle-shaped body, and the control system acquires length curve data and thickness curve data of the rolling process and position variation data of the vertical rollers at two sides to draw a rolling profile graph and compares the input and output length change and the thickness change to correct the rolling profile graph.
The front inlet and the rear outlet of the primary variable cross-section flat rolling device are respectively provided with a clamping mechanism, a thickness measuring mechanism, a length measuring mechanism and an end position detecting mechanism, the rolling profile figure corrected in the previous process is used as an input model of the rolling process, and determining an initial coordinate point of the rolling procedure by using front end position data provided by the end position detection mechanism, providing a basis for initial parameter configuration of the rolling procedure, controlling the press-in amount of upper and lower flat rolls of a primary variable cross-section flat rolling device by a control system, gradually controlling the press-in amount of the shuttle-shaped body to be increased at a shuttle-shaped convergence part and gradually controlling the press-in amount to be decreased at a shuttle-shaped expansion part so as to press the shuttle-shaped body into a saddle-shaped continuous body or a single body, and drawing a rolling contour figure by acquiring length curve data and thickness curve data of the rolling procedure and position variation data of the upper and lower flat rolls by the control system, and correcting the rolling contour figure by comparing input and output length variation and thickness variation.
The front inlet and the rear outlet of the depth variable cross-section flat rolling device are respectively provided with a clamping mechanism, a thickness measuring mechanism, a length measuring mechanism and an end position detecting mechanism, a rolling contour figure corrected by the previous process is used as an input model of the rolling process, the front position data provided by the end position detecting mechanism is used for determining an initial coordinate point of the rolling process, a basis is provided for the initial parameter configuration of the rolling process, a control system controls the pressing amount of upper and lower flat rollers of the depth variable cross-section flat rolling device, the horse saddle-shaped continuous body or single body is gradually controlled to increase the pressing amount at a shuttle-shaped convergence part and gradually control to decrease the pressing amount at a shuttle-shaped expansion part, two side surfaces are approximately parallel, the upper and lower surfaces are wave-shaped continuous bodies or single bodies, and the control system acquires length curve data, thickness curve data and position variation data of the upper and lower flat rollers of the rolling process to draw the rolling contour figure, the rolling profile is corrected by comparing the input/output length variation and the thickness variation.
And (3) modifying and rolling the parallel edges at two sides of the wavy continuous body or the single body by using a trimming vertical rolling device, and enabling the width and the chamfer angle of the two sides of the trimmed wavy continuous body to meet the requirement of processing size.
And modifying and rolling the upper and lower wavy surfaces of the modified wavy continuous body or the monomer by using the modified variable cross-section flat rolling device, and having a proper feeding amount so that the upper and lower wavy surfaces of the modified wavy continuous body meet the processing size requirement.
The primary shaping and edging device respectively comprises rolling passes formed by annular grooves on the left and right vertical rolls.
The pinch roll comprises a roll frame and upper and lower transverse rolls positioned in the roll frame, wherein two ends of each lower transverse roll are installed in the roll frame through bearings, one end of each lower transverse roll is in transmission connection with a stepping motor, bearing frames at two ends of each upper transverse roll are sleeved in a wheel frame and can move up and down along a vertical track, a servo hydraulic cylinder is vertically installed on the roll frame, the telescopic end of each servo hydraulic cylinder is connected to the bearing frame of each upper transverse roll, the telescopic end of each servo hydraulic cylinder moves to drive the bearing frame of each upper transverse roll to move, a displacement sensor (used for detecting the height change of the pinch roll) formed by the telescopic end of a detector is installed on each servo hydraulic cylinder, the position sensor provides steel plate thickness information for a control system, and the control system controls the driving motor and the servo hydraulic cylinders to move.
The vertical rolling device comprises: the horizontal roller frame is sleeved at the bottom of the inner side of the rolling mill frame in a matching manner, flat cavities are respectively formed in the upper wall and the lower wall of the roller frame, the upper end and the lower end of a pair of left and right rollers are respectively installed on corresponding roller shaft seats through bearings, the two roller shaft seats at the upper ends are sleeved in the upper flat cavities in a side-by-side matching manner and can slide left and right, and the two roller shaft seats at the lower ends are sleeved in the lower flat cavities in a side-by-side matching manner and can slide left and right; the two ends of the roll frame are respectively and fixedly provided with a left servo hydraulic cylinder and a right servo hydraulic cylinder, the telescopic ends of the servo hydraulic cylinders are respectively fixed on the side surfaces of the upper roll shaft seat and the lower roll shaft seat on the adjacent sides through connecting beams, a rolling gap exists between the left roll and the right roll, and the left servo hydraulic cylinder and the right servo hydraulic cylinder are controlled by a control system to enable the left servo hydraulic cylinder and the right servo hydraulic cylinder to be telescopic and change the rolling gap to gradually widen and narrow; the upper end of the rolling mill stand is fixedly provided with a gear box, the input end of the gear box is in transmission connection with a driving mechanism through a transmission mechanism, and the two parallel output ends of the gear box are downwards in transmission connection with the upper ends of the corresponding rollers through vertical rolling universal couplings respectively.
The flat rolling device comprises: the rolling mill comprises a rolling mill frame, a servo hydraulic cylinder, an upper roller and a lower roller, wherein the rolling mill frame comprises a left side wall and a right side wall, vertical sliding grooves are respectively formed in symmetrical positions of the two side walls, two ends of the upper roller are sleeved in the corresponding vertical sliding grooves in a matched mode through a lifting bearing box, and a vertical guide structure is arranged between the lifting bearing box and the vertical sliding grooves; two ends of the lower roller are respectively sleeved in the corresponding vertical chutes in a matching way through fixed bearing boxes, and the fixed bearing boxes on one side or two sides are fixed on the side surfaces of the vertical chutes through bearing box fixing seats; one end of the upper roller and one end of the lower roller are in transmission connection with the driving mechanism through the transmission mechanism respectively; and a vertical controllable forward and backward driving device for driving the lifting bearing box to synchronously lift is arranged at the top of the rolling mill stand, and the control system controls the vertical controllable forward and backward driving device to push or lift the upper roller according to the variable cross section setting information.
The transmission mechanism is a roller way or a transmission belt or a chain ring which is positioned between the rolling devices, the head end of the transmission mechanism is positioned at the pinch output port of the upper rolling procedure, and the tail end of the transmission mechanism is positioned at the pinch input port of the lower rolling procedure.
Each process is used for correcting the rolling profile graph and is also used as a rolling control parameter of the process.
The front inlet and the rear outlet of the edge trimming vertical rolling device and the edge trimming variable cross-section flat rolling device are respectively provided with a clamping mechanism, a thickness measuring mechanism, a length measuring mechanism and an end position detecting mechanism, a rolling profile figure corrected in the previous process is used as an input model of the rolling process, the initial coordinate point of the rolling process is determined according to the position data of the front inlet of the rolling process, a basis is provided for the initial parameter configuration of the rolling process, a control system collects the length curve data and the thickness curve data of the rolling process and the position variable quantity data of an upper flat rolling roller and a lower flat rolling roller to draw the rolling profile figure, and the rolling profile figure is corrected by comparing the input and output length change and the thickness change.
And a grating ruler for detecting the width of the steel plate is arranged below each vertical roll bracket.
The flat rolling device comprises a vertical controllable propelling mechanism which is used for driving a transverse upper roller and a transverse lower roller to mutually approach or separate in a rolling mill frame, and a control system controls the vertical controllable propelling mechanism to propel or lift the upper roller according to variable cross section setting information.
Compared with the prior art, the invention has the beneficial effects that: the rolling line adopts a 5-continuous rolling k5 vertical-k 4 flat-k 3 flat-k 2 vertical-kl flat rolling system, and the rolling specification is as follows: the width is 60-120mm, and the thickness is 10-60 mm. The automobile plate spring with various thicknesses can be used for rolling, is particularly suitable for rolling automobile spring flat steel with 30-60mm, and can be rolled into a variable-section automobile plate spring product with larger inclination and suitable for increasing the guide arm of the plate spring. The output end thickness curve and length curve of each rolling procedure are used as the initial thickness and length values input by the next procedure, the values are combined with the position detection data of the next rolling mill to determine the coordinate points of the rolling process of the next rolling mill, a basis is provided for the initial parameter configuration of the next rolling mill, meanwhile, the control system collects the length curve data and the thickness curve data of each rolling mill to draw the rolling contour graph of each rolling mill, the rolling contour graph is corrected by comparing the input and output length changes and the thickness changes of each rolling mill, and then the rolling contour graph is used as the initial thickness and length values input by the next procedure.
The equipment adopts a servo hydraulic system, automatically controls the roller, continuously acts according to the shape of a product, directly rolls the variable-section plate spring, adopts a short flow, reduces the heating times, saves the natural gas energy, improves the productivity by multiple times, and reduces the production cost.
The invention is superior to the original variable cross-section single-piece rolling mill in that the rolling is firstly carried out immediately and then is carried out by flat rolling for two-pass forming, the large roll diameter (410mm) of the rolling mill model is also larger, only a single-section variable cross section can be rolled, and a multi-section variable cross section cannot be realized. Compared with a variable cross-section straight-through multi-piece rolling mill, the variable cross-section straight-through multi-piece rolling mill cannot realize small angle due to the fact that the multi-section variable cross-section wave-shaped lead angle is small, the large roll diameter cannot realize small angle, the invention adopts 5 continuous rolling, namely, k5 vertical rolling is firstly carried out, then two flat rolling passes through k4 and k3, the flat rolling mill is small in model, small in roll diameter (250 mm), and the small roll diameter can completely realize multi-section variable cross section. The invention can distribute rolling quantity for the flat rolling of the workpiece with larger thickness by two times of rolling, and the elongation coefficient is more reasonable. The kl flat rolling k2 vertical rolling amount of the rolling mill is small (the diameter of a roller is 170 mm), the precision is higher after the plane and the width of a workpiece are trimmed, and the wavy small-angle chamfering can be met.
Drawings
FIG. 1 is a schematic view of a five-tandem mill type composition production line of the present invention.
FIG. 2 is a schematic diagram of the shape of a steel plate processed by the five-tandem rolling system of the present invention.
FIG. 3 is a structure view of an end rolling pinch assembly.
Fig. 4 is a view showing the structure of direction a in fig. 3.
FIG. 5 is a drawing of a flat rolling pinch fitting.
Fig. 6 is a view showing the structure of direction B in fig. 5.
Fig. 7 is a control block diagram of the five continuous rolling system.
Fig. 8 is a block diagram of the flat rolling roll control.
Fig. 9 is a block diagram of the edgewise roll control.
FIG. 10 is a signal diagram of the front and rear pinch detection members.
FIG. 11 is a side view of a flat rolling apparatus.
Fig. 12 is a perspective view of the entire flat rolling apparatus.
Fig. 13 is a left side view of fig. 12.
FIG. 14 is a schematic view showing a state where the servo hydraulic cylinder is fitted to the upper and lower rolls.
Fig. 15 is a perspective view of an edger unit.
Fig. 16 is a side elevational view of fig. 15.
Fig. 17 is a schematic structural view of the vertical roll stand.
Fig. 18 is a front view of the mating relationship of the coupling beam to the side vertical runners of the roll stand.
FIG. 19 is a schematic diagram of the pass configuration of two rolls in stand rolling.
Reference numbers in the figures: 1-motor, 2-shaft coupling, 3-combined speed reducer, 4-universal shaft coupling, 5-servo hydraulic cylinder, 6-rolling mill frame, 7-upper rolling roller, 8-lower rolling roller, 9-roller unloading device, 10-base, 11-auxiliary frame, 13-lifting bearing box, 14-fixed bearing box, 15-bearing box fixing seat, 16-fixing seat, 17-vertical sliding groove, 18-front guide opening, 19-rear guide opening, 20-track plate, 21-track groove, 22-bearing box sliding seat, 23-front guide device, 24-transverse moving adjusting groove, 26-vertical rolling trimming surface, 31-vertical rolling motor, 32-vertical rolling shaft coupling, 33-vertical rolling speed reducer, 34-connecting flange, 35-spline sleeve, 36-gear box, 37-edgewise rolling universal joint, 38-lifting hydraulic cylinder, 39-suspender, 40-roller frame, 41-edgewise rolling roller, 42-connecting beam, 43-roller shaft seat, 44-servo hydraulic cylinder, 45-roller base, 46-roller frame, 47-push-pull hydraulic cylinder, 48-vertical slideway, 49-guide platform, 50-thickness measuring mechanism, 51-housing frame, 52-cycloidal needle speed reducer, 53-servo hydraulic cylinder, 54-displacement sensor, 55-thickness measuring bracket, 56-coupler, 57-connecting frame, 58-lower pinch roller, 59-upper pinch roller, 60-lateral length mechanism, 61-housing frame, 62-length measuring roller, 63-length measuring bracket, 70-end position monitoring component, 71-correlation switch 1, 72-correlation switch 2, 81-inlet seat, 82-outlet seat.
Detailed Description
Example 1: a variable cross-section multi-section continuous five-continuous-rolling system is shown in figure 1 and sequentially comprises a primary shaping vertical rolling device, a primary variable cross-section flat rolling device, a depth variable cross-section flat rolling device, a trimming vertical rolling device and a trimming variable cross-section flat rolling device from front to back according to a processing sequence. A roller way type transmission mechanism is arranged between the devices, and the devices form a continuous rolling production line.
The rolling mechanism (CN 112024600A) in the variable cross-section straight-through multi-piece rolling mill developed by the inventor of the project comprises a rolling mill frame, a servo hydraulic cylinder, an upper roller and a lower roller, wherein the rolling mill frame comprises a front side wall and a rear side wall (or frame), vertical sliding grooves are respectively arranged at the symmetrical positions of the two side walls, two ends of the upper roller are sleeved in the corresponding vertical sliding grooves in a matching way through a lifting bearing box, and a vertical guide structure is arranged between the lifting bearing box and the vertical sliding grooves. The equipment is suitable for rolling spring flat steel with the thickness of less than 30mm, can be connected with a spring flat steel rolling line, can continuously roll a plurality of variable-section plate springs by utilizing waste heat at the temperature of 900-950 ℃ of finished spring flat steel products rolled by a finished product rack, however, the existing automobile is additionally provided with an air suspension, and a guide arm is additionally arranged on a plate spring, so that the inclination ratio of the plate spring is increased, the thickness of the plate spring is required to be increased to be different from 30-60mm, and the automobile plate spring with the thickness of more than 30mm can not be rolled by adopting the variable-section straight-through multi-plate rolling mill. The flat rolling pressure of the equipment is 160 tons, and the equipment is usually used for rolling the automobile plate spring with the variable cross section with the cross section thickness of 18mm, and the equipment can not realize the rolling of the automobile plate spring with the thick cross section only by a mode of increasing the pressure of a flat rolling roller, for example, an original single-piece rolling mill with the variable cross section is formed by first vertical rolling and then flat rolling in two passes, the large roll diameter of the rolling mill is also larger (410mm), only a single-section variable cross section can be rolled, and a multi-section variable cross section can not be realized. Because the angle of the multi-section variable cross-section wave-shaped lead angle is smaller, the large roll diameter can not realize a small angle. Aiming at the technical problem, the embodiment provides a variable-section multi-section continuous five-continuous-rolling system suitable for rolling the automobile plate spring with the section thickness ranging from 30mm to 60mm, and meanwhile, the purposes of high efficiency and energy conservation are achieved. The variable cross-section multi-stage continuous five-tandem rolling system according to the present invention will be described in further detail with reference to the accompanying drawings and examples.
In this embodiment, the primary shaping and finishing rolling device and the finishing and rolling device adopt rolling devices having the same main body, and at least the pass of each of the vertical rolls differs. The primary variable cross-section flat rolling device, the depth variable cross-section flat rolling device and the trimming variable cross-section flat rolling device adopt flat rolling devices with the same main body.
One implementation form of the flat rolling device can be seen in fig. 11 and 12, and includes a rolling mill frame 6, a servo hydraulic cylinder 5, an upper roller 7 and a lower roller 8, wherein the rolling mill frame 6 includes left and right side walls (or frames), the two side walls are symmetrically provided with vertical sliding chutes 17 respectively as shown in fig. 3, two ends of the upper roller 7 are sleeved in corresponding vertical sliding chutes 17 through a lifting bearing box 13 in a matching manner, and a vertical guide structure is arranged between the lifting bearing box 13 and the vertical sliding chutes 17. As shown in fig. 12, it can be seen from the matching installation relationship between the upper and lower rollers and the vertical slideway that a track plate 20 is fixed on the side of the vertical sliding slot 17, bearing box sliding seats 22 are respectively fixed on the lifting bearing boxes on both sides of the upper roller, a track slot 21 is respectively arranged on the side of the bearing box sliding seat on each side, and each track slot is fittingly sleeved on the corresponding side of the track plate 20. The bearing box is internally provided with a cooling channel, circulating cooling water is injected into the cooling channel, and the circulating cooling water is kept to continuously cool the corresponding bearing box when each compression roller works, so that the reliable operation of each compression roller is ensured. And an adjusting mechanism for driving the bearing boxes at the two ends of each compression roller to move vertically is arranged at the same time.
The two ends of the lower roller 8 are respectively sleeved in the corresponding vertical sliding grooves 17 through the fixed bearing boxes 14 in a matching mode, and the fixed bearing boxes 14 on one side or two sides are fixed on the side faces of the vertical sliding grooves 17 through the bearing box fixing seats 15. One end of the upper roller 7 and one end of the lower roller 8 are respectively in transmission connection with the driving mechanism through the transmission mechanism, namely, as shown in fig. 2, one end of the upper roller 7 and one end of the lower roller 8 are respectively connected with the corresponding universal couplings 4, the two universal couplings 4 are respectively connected with the output end of the combined speed reducer 3, and the motor 1 is connected with the input end of the combined speed reducer 3 through the coupling 2.
And a controllable forward and backward driving device for driving the lifting bearing box 13 to synchronously move up and down is arranged at the top of the rolling stand 6, and the controllable forward and backward driving device is controlled by a control system to advance or lift the upper roller according to the variable cross-section setting information.
The controllable driving and reversing device is characterized in that a servo hydraulic cylinder 5 is fixedly installed at the top of a rolling mill stand 6, a fixed seat 16 is fixed at the telescopic end part of the servo hydraulic cylinder 5, and the lower sides of the two ends of the fixed seat 16 are respectively and fixedly connected with corresponding lifting bearing boxes 13.
A front material guiding opening 18 and/or a rear material guiding opening 19 are/is installed on one side surface or two side surfaces of the left side wall and the right side wall of the rolling stand 6, as shown in fig. 12, a transverse moving adjusting groove 24 is respectively arranged on the material guiding opening 18 and/or the rear material guiding opening 19, and a corresponding front guide device and a corresponding rear guide device are respectively installed on each transverse moving adjusting groove through bolts and can be adjusted left and right.
According to the product process, the servo hydraulic cylinder 5 is used for driving the upper roller 7, the roller gap between the upper roller 7 and the lower roller 8 is adjusted, and the control system is used for controlling the rotating speed of the motor 1 and the length and the thickness of each section of the variable section leaf spring according to set parameters or parameters calculated according to the previous rolling procedure. The motor 1 is connected with the combined speed reducer 3 through the coupler 2, the low-speed shaft end of the combined speed reducer 3 drives the upper roller 7 and the lower roller 8 to rotate through the universal coupler 4, the spring flat steel is sent into the rolling mill, and the upper roller 7 is driven to continuously act through the servo hydraulic cylinder 5.
As shown in fig. 15 and 16, the vertical rolling mechanism includes a rolling stand 46, a horizontal roller frame 40 is fitted on the bottom of the inner side of the rolling stand 40 in a matching manner, flat cavities are respectively formed on the upper and lower walls of the roller frame 40 as shown in fig. 18, corresponding roller shaft seats are respectively installed on the upper and lower ends of a pair of left and right rollers 41, the upper roller shaft seats are fitted in the upper flat cavities in a matching manner side by side, and the lower roller shaft seats are fitted in the lower flat cavities in a matching manner side by side. Servo hydraulic cylinders 44 are respectively and fixedly installed at two ends of the roller frame 40, a connecting beam is fixed at the telescopic end of each servo hydraulic cylinder 44, the connecting beam at each side is respectively pressed against the side surfaces of the upper roller shaft seat 43 and the lower roller shaft seat 43 at the adjacent side, a rolling gap exists between the left roller 41 and the right roller 41, and the rolling gap can be gradually changed under the control of the servo hydraulic cylinders 44 at the two sides.
The gear box 36 is fixedly installed at the upper end of the rolling stand 46, the input end of the gear box 36 is in transmission connection with the driving mechanism through the transmission mechanism, and the two parallel output ends of the gear box 36 are downwards in transmission connection with the upper ends of the corresponding rollers 41 through the vertical rolling universal couplings respectively.
According to the product rolling process, as shown in fig. 16, a servo hydraulic cylinder 44 of the vertical rolling mill drives a roll shaft seat 43 to slide in a roll frame 40 through a connecting beam 42, a left roll and a right roll are respectively installed in the corresponding roll shaft seats 43 through upper and lower bearing boxes, cooling channels are arranged in the bearing boxes, circulating cooling water is injected into the cooling channels, and when each press roll works, the circulating cooling water is kept to continuously cool the corresponding bearing box, so that the reliable operation of each press roll is ensured. Adjusting the roll gap between the left and right rolls 41 is shown in fig. 19, and for example, the primary shaping edger and the edging edger each include a roll pass formed by annular grooves formed in the left and right edger rolls. The control system is used for controlling the rotating speed of the motor 31 and the length and the width of each section of the variable cross section according to the set parameters or the parameters calculated according to the previous rolling process. The motor 31 is connected with a high-speed shaft of a speed reducer 33 through a coupler 32, the low-speed shaft of the speed reducer 33 is connected with a gear box 36 through a connecting flange 34 and a spline sleeve 35, the gear box 36 drives a roller 41 to rotate through a universal coupler 37, spring flat steel is sent into a rolling mill along a guide platform 49, the roller 41 is driven by servo hydraulic steel 44 to continuously act, and workpieces meeting the size requirement are rolled.
As shown in fig. 3 and 4, a pinch mechanism and a thickness measuring mechanism are respectively arranged at the front inlet and the rear outlet of the primary shaping and rolling device, the control system calculates the volume of the flat steel according to the thickness information provided by the thickness measuring mechanism, determines the rolling standard and controls the press-in amount of the vertical rollers at two sides, the left and right vertical rollers of the primary shaping vertical rolling device are utilized to roll two side surfaces of the blank steel plate, the control system starts a servo hydraulic cylinder linked with each vertical roller according to the end position information, controls the left and right servo hydraulic cylinders to gradually pressurize and depressurize the two vertical rollers inwards, so that the blank steel plate is rolled into a continuous or single shuttle-shaped body, and the control system acquires length curve data and thickness curve data of the rolling process and position variation data of the vertical rollers at two sides to draw a rolling profile graph and compares the input and output length change and the thickness change to correct the rolling profile graph.
As shown in fig. 5 and fig. 6, a pinch mechanism, a thickness measuring mechanism, a length measuring mechanism and an end position detecting mechanism are respectively arranged at the front inlet and the rear outlet of the primary variable cross-section flat rolling device, a rolling contour figure corrected by the previous process is used as an input model of the rolling process, the initial coordinate point of the rolling process is determined by the front end position data provided by the end position detecting mechanism, the basis is provided for the initial parameter configuration of the rolling process, a control system controls the pressing amount of upper and lower flat rolls of the primary variable cross-section flat rolling device, the shuttle body is gradually controlled to increase the pressing amount at a shuttle converging part and gradually controlled to decrease the pressing amount at a shuttle expanding part so as to be pressed into a saddle-shaped continuous body or a single body, and the control system acquires the length curve data, the thickness curve data and the position variation data of the upper and lower flat rolls of the rolling process to draw the rolling contour figure, the rolling profile is corrected by comparing the input/output length variation and the thickness variation.
As shown in figures 5 and 6, the front inlet and the rear outlet of the depth variable cross-section flat rolling device are respectively provided with a clamping mechanism, a thickness measuring mechanism, a length measuring mechanism and an end position detecting mechanism, a rolling contour figure corrected by the previous process is used as an input model of the rolling process, the front end position data provided by the end position detecting mechanism is used for determining an initial coordinate point of the rolling process, a basis is provided for the initial parameter configuration of the rolling process, a control system controls the pressing amount of upper and lower flat rollers of the depth variable cross-section flat rolling device, a saddle-shaped continuum or a single body is gradually controlled to increase the pressing amount at a shuttle convergence part and gradually control to decrease the pressing amount at a shuttle expansion part, two side surfaces are approximately parallel, the upper and lower surfaces are wave-shaped continuum or a single body, and the control system collects the length curve data and the thickness curve data of the rolling process and the position variation data of the upper and the lower flat rollers to draw the rolling contour figure, the rolling profile is corrected by comparing the input/output length variation and the thickness variation.
As shown in fig. 3 and 4, the trimming and edging device is used for performing modified rolling on the parallel edges on the two sides of the wavy continuous body or the single body and has a moderate pressing amount, so that the width and the chamfer angle of the two sides of the trimmed wavy continuous body meet the requirement of processing size.
As shown in fig. 5 and 6, the modified rolling is performed on the upper and lower wavy surfaces of the modified wavy continuous body or the single body by using the modified variable cross-section flat rolling device, and the moderate plunge amount is provided, so that the upper and lower wavy surfaces of the modified wavy continuous body meet the processing size requirement.
Meanwhile, a clamping mechanism, a thickness measuring mechanism, a length measuring mechanism and an end position detecting mechanism can be respectively arranged at the front inlet and the rear outlet of the trimming vertical rolling device and the trimming variable cross-section flat rolling device, the rolling profile graph corrected in the previous process is used as an input model of the rolling process, the initial coordinate point of the rolling process is determined according to the position data of the front inlet of the rolling process, a basis is provided for the initial parameter configuration of the rolling process, a control system collects the length curve data and the thickness curve data of the rolling process and the position variable quantity data of the upper flat rolling roller and the lower flat rolling roller to draw the rolling profile graph, and the rolling profile graph is corrected by comparing the input and output length change and the thickness change.
And a grating ruler for detecting the width of the steel plate can be arranged below each vertical roll bracket.
The five-tandem rolling system of the embodiment adopts a rolling system consisting of a k5 vertical-k 4 flat-k 3 flat-k 2 vertical-kl flat, and can roll by using automobile plate springs with various thicknesses, and the rolling specifications are as follows: the width is 60-120mm, the thickness is 10-60mm, the rolling mill is particularly suitable for rolling automobile spring flat steel of 30-60mm, and the rolling mill can be used for rolling automobile plate spring products with variable cross sections, wherein the automobile spring flat steel has larger inclination and is suitable for increasing guide arms of plate springs. The output end thickness curve and length curve of each rolling procedure are used as the initial thickness and length values input by the next procedure, the values are combined with the position detection data of the next rolling mill to determine the coordinate points of the rolling process of the next rolling mill, a basis is provided for the initial parameter configuration of the next rolling mill, meanwhile, the control system collects the length curve data and the thickness curve data of each rolling mill to draw the rolling contour graph of each rolling mill, the rolling contour graph is corrected by comparing the input and output length changes and the thickness changes of each rolling mill, and then the rolling contour graph is used as the initial thickness and length values input by the next procedure. In addition, each process is used for correcting the rolling profile and is also used as a rolling control parameter of the process.
Example 2: another flat rolling device based on embodiment 1 comprises a vertical controllable propulsion mechanism, which is used for driving a horizontal upper roller and a horizontal lower roller to get close to or get away from each other in a rolling mill frame, and a control system controls the vertical controllable propulsion mechanism to propel or lift the upper roller according to variable cross-section setting information. The pinch roll comprises a roll frame and an upper transverse roll and a lower transverse roll which are positioned in the roll frame, wherein two ends of the lower transverse roll are installed in the roll frame through bearings, one end of the lower transverse roll is in transmission connection with a stepping motor, bearing frames at two ends of the upper transverse roll are sleeved in a wheel frame and can move up and down along a vertical track, a servo hydraulic cylinder is vertically installed on the roll frame, a telescopic end of the servo hydraulic cylinder is connected to the bearing frame of the upper transverse roll, the telescopic end of the servo hydraulic cylinder moves to drive the bearing frame of the upper transverse roll to move, a displacement sensor (used for detecting the height change of the pinch roll) which is formed by a telescopic end of a detector is installed on the servo hydraulic cylinder, the position sensor provides steel plate thickness information for a control system, and the control system controls the driving motor and the servo hydraulic cylinder to move.
Example 3: in the variable cross-section multi-section continuous five-continuous rolling system, a variable cross-section automobile plate spring product with larger inclination and suitable for increasing a guide arm of a plate spring and an automobile spring flat steel with the thickness range of 30-60mm are rolled.
The embodiment mainly aims at the fact that an original variable cross-section single-piece rolling mill is formed by first vertical rolling and then horizontal rolling, the large roll diameter of the rolling mill is 410mm, only a single-section variable cross section can be rolled, and multi-section variable cross sections cannot be achieved. And the improvement is aimed at the original variable cross-section multi-sheet rolling mill, because the angle of the multi-section variable cross-section wave-shaped lead angle is smaller, and the small angle cannot be realized by the large roll diameter. In the embodiment, five-stage continuous rolling is adopted, namely, two-stage flat rolling (the roll diameter is 250mm) is performed firstly through k4 and k3, then the flat rolling (the roll diameter is 170 mm) is performed through k1, and the multi-stage variable cross section can be completely realized through small roll diameter.
The five-continuous rolling system comprises a continuous rolling system which sequentially adopts a primary shaping and vertical rolling device, a primary variable cross-section flat rolling device, a depth variable cross-section flat rolling device, a trimming and vertical rolling device and a trimming and variable cross-section flat rolling device.
The three flat rolling devices comprise a rolling mill frame, a vertical controllable propulsion mechanism, an upper roller and a lower roller, wherein the vertical controllable propulsion mechanism is used for driving the horizontal upper roller and the horizontal lower roller to mutually approach or separate in the rolling mill frame. One end of the upper roller and one end of the lower roller are in transmission connection with the driving mechanism through the first transmission mechanism. And a vertical controllable propulsion mechanism for driving the lifting bearing box to synchronously lift is arranged at the top of the rolling mill stand, and the control system controls the vertical controllable propulsion mechanism to propel or lift the upper roller according to the variable cross-section setting information. The ratio of the primary variable cross-section flat rolling device, the depth variable cross-section flat rolling device and the trimming variable cross-section flat rolling device to the rolling reduction of the automobile spring flat steel is 11:8: 1.
The two vertical rolling devices further comprise a rolling stand 46, a pair of left and right rollers 41 are installed in the rolling stand 46, and the end parts of the left and right rollers 41 are respectively in transmission connection with the second transmission mechanism.
The five-continuous-rolling system is used for the rolling process of the automobile spring flat steel, and directly introduces the long-strip spring flat steel with the thickness of 10-60mm, particularly 30-60mm, from the guide frame at the inlet of the K5 end, and the system automatically rolls and forms qualified products according to the setting, and has the advantages that: (1) the pressing radian is large (the arc distance is short) by the double small pressing rollers, so that the requirement of a plate spring is met; the two-time grading reduction is high in precision; (2) the continuous rolling of a plurality of sheets can be realized; (3) the overall precision is high. As can be seen from FIG. 2, when the spring flat steel passes through K5, the spring flat steel is rolled from the width direction by two vertical rollers to form a shuttle shape, and the spring flat steel with the variable cross section extends along the length direction, when K4, a shallow groove is rolled and mainly extends along the width at the shallow groove to form a primary flat steel with the variable cross section, when K3, a deep groove is rolled and mainly extends along the width at the deep groove to form a flat steel with the variable cross section, the gap between the left roller and the right roller in K2 is adjusted to be smaller than K3, the gap between the upper roller and the lower roller in K1 is adjusted to be smaller than K5, and when the K2 and the K1 are used for trimming and trimming, the clamping force and the shaping effect can be sufficient.
Example 4: on the basis of example 1, a specific rolling mill model system as shown in fig. 1 was adopted, wherein K4, K3 and K1 were flat rolling devices, and substantially the same model was adopted, but all had a variable cross-section automatic adjustment function, and K5 and K2 were vertical rolling devices.
The same part of the three flat rolling devices at least comprises a flat rolling mill frame, a vertical controllable propelling mechanism, an upper roller and a lower roller. The vertical controllable propulsion mechanism is used for driving the transverse upper roller and the transverse lower roller to get close to or get away from each other in the rolling mill stand, and the control system controls the vertical controllable propulsion mechanism to propel or lift the upper roller according to the variable cross-section setting information. Vertical controllable advancing mechanism is at 6 tops fixed mounting servo hydraulic cylinder 5 of rolling mill frame, and servo hydraulic cylinder 5's flexible end fixing has fixing base 16, and 16 both ends undersides of fixing base both ends are the lift bearing box 13 that fixed connection corresponds respectively. The top of the rolling mill stand 6 is provided with a vertical controllable propulsion mechanism for driving the lifting bearing box 13 to synchronously move up and down, and the control system controls the vertical controllable propulsion mechanism to propel or lift the upper roller according to the variable cross section setting information.
One end of the upper roller and one end of the lower roller are in transmission connection with the driving mechanism through the first transmission mechanism. The rolling mechanism of the flat rolling device comprises a rolling mill frame 6, a servo hydraulic cylinder 5, an upper roller 7 and a lower roller 8, wherein the rolling mill frame 6 comprises a left side wall (or a right side wall), vertical sliding grooves 17 are respectively arranged at the symmetrical positions of the two side walls as shown in figure 3, the two ends of the upper roller 7 are sleeved in the corresponding vertical sliding grooves 17 in a matching mode through a lifting bearing box 13, and a vertical guide structure is arranged between the lifting bearing box 13 and the vertical sliding grooves 17. As shown in fig. 5, the upper and lower rollers are fitted with the vertical slideway, and a track plate 20 is fixed on the side of the vertical sliding slot 17, bearing box sliding seats 22 are respectively fixed on the lifting bearing boxes on both sides of the upper roller, a track slot 21 is respectively arranged on the side of the bearing box sliding seat on each side, and each track slot is fitted on the corresponding track plate 20. The bearing box is internally provided with a cooling channel, circulating cooling water is injected into the cooling channel, and the circulating cooling water is kept to continuously cool the corresponding bearing box when each compression roller works, so that the reliable operation of each compression roller is ensured. And an adjusting mechanism for driving the bearing boxes at the two ends of each compression roller to move vertically is arranged at the same time.
The two ends of the lower roller 8 are respectively sleeved in the corresponding vertical sliding grooves 17 through the fixed bearing boxes 14 in a matching mode, and the fixed bearing boxes 14 on one side or two sides are fixed on the side faces of the vertical sliding grooves 17 through the bearing box fixing seats 15. One end of the upper roller 7 and one end of the lower roller 8 are respectively in transmission connection with the driving mechanism through the transmission mechanism, namely, as shown in fig. 1, one end of the upper roller 7 and one end of the lower roller 8 are respectively connected with the corresponding universal couplings 4, the two universal couplings 4 are respectively connected with the output end of the combined speed reducer 3, and the motor 1 is connected with the input end of the combined speed reducer 3 through the coupling 2.
A front material guiding opening 18 and/or a rear material guiding opening 19 are/is arranged on one side surface or two side surfaces of the left side wall and the right side wall of the rolling stand 6, as shown in fig. 1, a transverse moving adjusting groove 24 is respectively arranged on the material guiding opening 18 and/or the rear material guiding opening 19, and a corresponding front guide device 23 and a corresponding rear guide device are respectively arranged on each transverse moving adjusting groove through bolts and can be adjusted left and right; the front and back guide device comprises a guide groove with a concave middle part, and the notch of the guide groove is conical and used for guiding the plate spring. The servo hydraulic cylinder 5 of the flat rolling mill drives an upper roller 7, the roller gap between the upper roller 7 and a lower roller 8 is adjusted, and a control system controls the rotating speed of a motor 1 and the length and the thickness of each section of the variable-section plate spring. The rolling mill is started, the motor 1 is connected with the combined speed reducer 3 through the coupler 2, the low-speed shaft end of the combined speed reducer 3 drives the upper roll 7 and the lower roll 8 to rotate through the universal coupler 4, a workpiece rolled by the vertical rolling mill enters the rolling mill, the upper roll 7 is driven by the servo hydraulic cylinder 5 to continuously move, and finally the workpiece meeting the size requirement is rolled.
The vertical rolling device also comprises a vertical rolling mill frame, a pair of left and right rollers are arranged in the mill frame, and the end parts of the left and right rollers are respectively in transmission connection with the transmission mechanism II. The length and width of each section of the variable cross section are controlled by controlling the rotating speed of the motor 31 of the system. The motor 31 is connected with a high-speed shaft of a speed reducer 33 through a coupler 32, the low-speed shaft of the speed reducer 33 is connected with a gear box 36 through a connecting flange 34 and a spline sleeve 35, the gear box 36 drives the rollers 41 to rotate through a universal coupler 37, spring flat steel is sent into a rolling mill along a guide table 49, a pair of left and right rollers 41 (vertical rollers) are driven by a transmission mechanism II to continuously act, and workpieces meeting the size requirement are rolled.
The vertical rolling mechanism comprises a rolling mill frame 46, wherein the bottom of the inner side of the rolling mill frame is matched and sleeved with a horizontal type roller frame 40, the upper wall and the lower wall of the rolling mill frame are respectively provided with a flat cavity, the upper end and the lower end of a pair of left and right rollers 41 are respectively provided with a corresponding roller shaft seat, the two roller shaft seats at the upper end are sleeved in the upper flat cavity in a matching mode in parallel, and the two roller shaft seats at the lower end are sleeved in the lower flat cavity in a matching mode in parallel. A rolling gap exists between the left roller 41 and the right roller 41, and the rolling gap is adjusted in advance by a hand wheel or controlled by a servo hydraulic cylinder.
The second transmission mechanism comprises a gear box 36 fixedly mounted at the upper end of the rolling mill stand 46, the input end of the gear box 36 is in transmission connection with the driving mechanism through the transmission mechanism, and two parallel output ends of the gear box 36 are downwards in transmission connection with the upper ends of the corresponding rollers 41 through vertical rolling universal couplings respectively. The second driving mechanism further comprises a vertical rolling motor 31 and a vertical rolling speed reducer 33 which are fixed at the top end of the driving mechanism support, a rotating shaft of the vertical rolling motor 31 is connected with the input end of the vertical rolling speed reducer 33 through a vertical rolling coupler 32, the output end of the vertical rolling speed reducer 33 is connected with a flange 34, and the flange 34 is connected with the input end of the gear box 36 through a spline sleeve 35 and a corresponding spline shaft.
In the working process, raw materials such as cut spring flat steel are heated by a heating furnace and then are sent to the front of a rolling mill through a roller way, a vertical rolling motor is started, a left roller and a right roller are respectively driven to rotate through a speed reducer, a gear box and a universal coupling, setting parameters (such as variable cross-section functions) are input into a control system or a computer through input equipment (digital keys), and the heated spring flat steel is sent between a left roller and a right roller through a guide platform. The proximity sensor can be installed at the entrance of the guide platform, or the pressure sensor is installed between the end part of each servo hydraulic cylinder and the connecting beam or between the connecting beam and the roller frame, the pressure change curve of each servo hydraulic cylinder is fed back, so that qualified spring flat steel can be pressed, the vertical rolling process is short in time, the flat rolling motor is started simultaneously, and the servo hydraulic cylinders 5 are controlled to drive the upper rollers 7 to gradually push, push and advance and gradually shrink and lift according to the setting. The plate spring rolling blank enters the upper and lower rollers from the front guide device 23, and the mode for monitoring the entering time of the plate spring rolling blank can be that a proximity sensor is arranged at the entrance of the front material guide port 18, or a pressure sensor is arranged in the gap of the connection position of the upper roller or the lower roller, and the control system judges that the plate spring rolling blank enters the rolling channel by monitoring the signal of each sensor. The spring flat steel which contains residual heat and is pressed by K5 and K4 to extend along the width directly enters K3, K2 and K1 to be rolled.
Example 5: on the basis of the embodiment 4, a manual adjusting mechanism or a controllable adjusting mechanism for controlling the inward or outward translation of the left and right rollers 41 in the vertical rolling device is arranged. The controllable regulating mechanism is that a horizontal roller frame 40 is sleeved at the bottom of the inner side of a rolling stand 46 of the vertical rolling device in a matching way, flat cavities are respectively arranged on the upper wall and the lower wall of the roller frame 40, corresponding roller shaft bases are respectively arranged at the upper end and the lower end of a pair of left and right rollers 41, the two roller shaft bases at the upper end are sleeved in the upper flat cavity in a matching way in parallel, and the two roller shaft bases at the lower end are sleeved in the lower flat cavity in a matching way in parallel; servo hydraulic cylinders 44 are respectively and fixedly installed at two ends of the roller frame 40, a connecting beam is fixed at the telescopic end of each servo hydraulic cylinder 44, the connecting beam at each side is respectively pressed against the side surfaces of the upper roller shaft seat 43 and the lower roller shaft seat 43 at the adjacent side, a rolling gap exists between the left roller 41 and the right roller 41, and the rolling gap can be gradually changed under the control of the servo hydraulic cylinders 44 at the two sides.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. For example, in addition to the above embodiments, the primary variable cross-section flat rolling device, the depth variable cross-section flat rolling device, the shaping edger, the trimming variable cross-section flat rolling device, and the edging edger are respectively independent rolling mills. For example, an auxiliary shaping and vertical rolling device is further added between the primary variable cross-section flat rolling device and the depth variable cross-section flat rolling device. For example, the vertical controllable propelling mechanism is that a worm and gear box is installed at the top or the bottom of the vertical slideway, the inner end of a vertical lifting rod connected with a worm shaft is fixedly connected with a bearing box part, the worm shaft is connected with a servo motor, the servo motor is fixed on one side of the rolling support through a motor base, and the worm and gear are meshed. For example, the vertically controllable propelling mechanism can also be formed by installing servo motors (or stepping motors) at the top or the bottom of the vertical slide way, and controlling the rotation of each servo motor by a control system so as to drive each bearing box to move up and down, for example, a screw rod rotates to drive a nut seat to move up and down. For example, the conveying mechanism is designed to be a conveying belt or a chain ring which is positioned between each rolling device, the head end of the conveying belt or the chain ring is positioned at the pinch output port of the upper rolling process, and the tail end of the conveying belt or the chain ring is positioned at the pinch input port of the lower rolling process.

Claims (7)

1. A variable cross-section multi-section continuous five-continuous-rolling system comprises a vertical rolling device and a flat rolling device, and is characterized by respectively comprising a primary shaping vertical rolling device, a primary variable cross-section flat rolling device, a depth variable cross-section flat rolling device, a trimming vertical rolling device and a trimming variable cross-section flat rolling device according to the processing sequence, wherein a transmission mechanism is arranged among the devices to form a continuous production line,
the front inlet and the rear outlet of the primary shaping vertical rolling device are respectively provided with a clamping mechanism, a thickness measuring mechanism, a length measuring mechanism and an end position detecting mechanism, a control system calculates the volume of the spring flat steel according to the thickness information of the spring flat steel provided by the thickness measuring mechanism, determines a rolling standard and controls the press-in amount of the vertical rolls on two sides, the left and right vertical rolls of the primary shaping vertical rolling device are utilized to roll two side surfaces of the flat steel, the control system starts a servo hydraulic cylinder linked with each vertical roll according to the end position information, controls the left and right servo hydraulic cylinders to gradually pressurize and decompress the two vertical rolls inwards to enable the flat steel to be rolled into a continuous or single shuttle-shaped body, the control system acquires length curve data and thickness curve data of the rolling process and position variation data of the vertical rolls on two sides to draw a rolling profile graph, and compares the input and output length variation and thickness variation to correct the rolling profile graph,
the front inlet and the rear outlet of the primary variable cross-section flat rolling device are respectively provided with a clamping mechanism, a thickness measuring mechanism, a length measuring mechanism and an end position detecting mechanism, a rolling contour figure corrected by the previous process is used as an input model of the rolling process, the initial coordinate point of the rolling process is determined by the front end position data provided by the end position detecting mechanism, a basis is provided for the initial parameter configuration of the rolling process, a control system controls the press-in amount of upper and lower flat rollers of the primary variable cross-section flat rolling device, the shuttle-shaped body is gradually controlled to increase the press-in amount at a shuttle-shaped convergence part and gradually control to decrease the press-in amount at a shuttle-shaped expansion part to be pressed into a saddle-shaped continuous body or a single body, the control system acquires the length curve data and the thickness curve data of the rolling process and the position variable quantity data of the upper and lower flat rollers to draw the rolling contour figure, and the rolling contour figure is corrected by comparing the input and output length change and thickness change,
the front inlet and the rear outlet of the depth variable cross-section flat rolling device are respectively provided with a clamping mechanism, a thickness measuring mechanism, a length measuring mechanism and an end position detecting mechanism, a rolling contour figure corrected by the previous process is used as an input model of the rolling process, the front position data provided by the end position detecting mechanism is used for determining an initial coordinate point of the rolling process, a basis is provided for the initial parameter configuration of the rolling process, a control system controls the pressing amount of upper and lower flat rollers of the depth variable cross-section flat rolling device, the horse saddle-shaped continuous body or single body is gradually controlled to increase the pressing amount at a shuttle-shaped convergence part and gradually control to decrease the pressing amount at a shuttle-shaped expansion part, two side surfaces are approximately parallel, the upper and lower surfaces are wave-shaped continuous bodies or single bodies, and the control system acquires length curve data, thickness curve data and position variation data of the upper and lower flat rollers of the rolling process to draw the rolling contour figure, by comparing the input/output length variation and the thickness variation to correct the rolling profile,
the trimming vertical rolling device is utilized to perform modified rolling on the parallel edges at two sides of the wave-shaped continuous body or the single body and has moderate press-in amount, so that the width and the chamfer angle of the two sides of the trimmed wave-shaped continuous body meet the requirement of processing size,
modifying rolling is carried out on the upper and lower wavy surfaces of the modified wavy continuous body or the monomer by using a modified variable cross-section flat rolling device, and the modified variable cross-section flat rolling device has moderate feeding amount, so that the upper and lower wavy surfaces of the modified wavy continuous body meet the requirements of machining size;
the vertical rolling device comprises: the roll stand comprises a driving mechanism, a transmission mechanism, a rolling mechanism and a roll stand (46), wherein a horizontal roll stand (40) is sleeved at the bottom of the inner side of the roll stand (46) in a matching manner, flat cavities are respectively arranged on the upper wall and the lower wall of the roll stand (40), the upper end and the lower end of a pair of left and right rolls (41) are respectively installed on corresponding roll shaft seats through bearings, the two roll shaft seats at the upper end are sleeved in the flat cavities on the upper wall in a side-by-side matching manner and can slide left and right, and the two shaft seat rolls at the lower end are sleeved in the flat cavities on the lower wall in a side-by-side matching manner and can slide left and right; the two ends of the roller frame (40) are respectively and fixedly provided with a left servo hydraulic cylinder and a right servo hydraulic cylinder (44), the telescopic ends of the servo hydraulic cylinders (44) are respectively fixed on the side surfaces of an upper roller shaft seat (43) and a lower roller shaft seat (43) on the adjacent sides through connecting beams (42), a rolling gap exists between the left roller and the right roller (41), and the left servo hydraulic cylinder and the right servo hydraulic cylinder (44) are controlled by a controller to enable the left servo hydraulic cylinder and the right servo hydraulic cylinder (44) to be telescopic to change the rolling gap to gradually widen and narrow; the upper end of the rolling mill stand (46) is fixedly provided with a gear box (36), the input end of the gear box (36) is in transmission connection with a driving mechanism through a transmission mechanism, and two parallel output ends of the gear box (36) are downwards in transmission connection with the upper ends of corresponding rollers (41) through vertical rolling universal couplings respectively; the flat rolling device comprises: the rolling mill comprises a rolling mill frame (6), a servo hydraulic cylinder (5), an upper roller (7) and a lower roller (8), wherein the rolling mill frame (6) comprises a left side wall and a right side wall, vertical sliding grooves (17) are respectively formed in the symmetrical positions of the two side walls, two ends of the upper roller (7) are sleeved in the corresponding vertical sliding grooves (17) in a matching mode through a lifting bearing box (13), and a vertical guide structure is arranged between the lifting bearing box (13) and the vertical sliding grooves (17); two ends of the lower roller (8) are respectively sleeved in the corresponding vertical sliding chutes (17) through fixed bearing boxes (14) in a matching manner, and the fixed bearing boxes (14) on one side or two sides are fixed on the side surfaces of the vertical sliding chutes (17) through bearing box fixing seats (15); one end of the upper roller (7) and one end of the lower roller (8) are respectively in transmission connection with the driving mechanism through the transmission mechanism; the top of the rolling mill frame (6) is provided with a vertical controllable advancing and retreating driving device which drives the lifting bearing box (13) to synchronously move up and down, and a control system controls the vertical controllable advancing and retreating driving device to advance or lift the upper roller according to the variable cross section setting information.
2. The variable cross-section multi-segment continuous five-continuous rolling system according to claim 1, wherein the primary shaping edger and the edging edger respectively comprise rolling passes formed by annular grooves formed in the right and left edgers.
3. The variable cross-section multi-section continuous five-continuous rolling system according to claim 1, wherein the conveying mechanism is a roller table or a conveying belt or a chain ring between each rolling device, and the head end of the conveying mechanism is positioned at a pinch output port of an upper rolling process and at a pinch input port of a lower rolling process.
4. The variable cross-section multi-segment continuous quintuplet system of claim 1, wherein each process is used to modify the rolling profile while also serving as a rolling control parameter for the process.
5. The variable cross-section multi-segment continuous five-continuous rolling system according to claim 1, wherein a pinch mechanism, a thickness measuring mechanism, a length measuring mechanism and an end position detecting mechanism are respectively arranged at a front inlet and a rear outlet of the edge-trimming vertical rolling device and the edge-trimming variable cross-section flat rolling device, a rolling profile pattern corrected in the previous process is used as an input model of the rolling process, an initial coordinate point of the rolling process is determined according to position data of the front inlet of the rolling process, a basis is provided for initial parameter configuration of the rolling process, a control system collects length curve data and thickness curve data of the rolling process and position variation data of upper and lower flat rolls to draw the rolling profile pattern, and the rolling profile pattern is corrected by comparing input and output length variation and thickness variation.
6. The variable cross-section multi-segment continuous five-continuous rolling system according to claim 1, wherein a grating ruler for detecting the width of the steel plate is arranged below each vertical roll bracket.
7. The variable cross-section multi-segment continuous five-continuous rolling system according to claim 1, wherein the flat rolling device comprises a vertical controllable propulsion mechanism for driving the horizontal upper roll and the horizontal lower roll to move close to or away from each other in the rolling mill frame, and the control system controls the vertical controllable propulsion mechanism to propel or lift the upper roll according to the variable cross-section setting information.
CN202110427226.XA 2021-04-21 2021-04-21 Variable cross-section multi-section continuous five-continuous rolling system Active CN113145638B (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1032911A (en) * 1987-11-05 1989-05-17 杜干城 Trapezoid cross section Steel Spring Plate and changeable section plate spring
CN1037851A (en) * 1987-08-31 1989-12-13 吉林工业大学 Precise roll-forging technology for variable-section steel sheet spring of car
JPH04228209A (en) * 1990-12-27 1992-08-18 Nhk Spring Co Ltd Rolling equipment for tapered leaf spring
CN1086749A (en) * 1993-10-13 1994-05-18 王桂兴 The method and apparatus of rolling changeable section plate spring
CN1144147A (en) * 1995-08-25 1997-03-05 宋玉泉 Changeable section spring rolling technology and equipment
CN101561023A (en) * 2009-05-26 2009-10-21 青岛帅潮实业有限公司 Non-cutting variable cross-section steel plate spring and end forming manufacturing technology and device thereof
EP3406366A1 (en) * 2017-05-22 2018-11-28 Frauenthal Automotive Sales GmbH Method for manufacturing a spring blade, spring blade for a leaf spring, leaf spring for a wheel suspension of a motor vehicle.
CN112024600A (en) * 2020-09-17 2020-12-04 河南凯银机械设备科技有限公司 Variable cross-section straight-through multi-sheet rolling mill
CN112024599A (en) * 2020-09-16 2020-12-04 河南凯银机械设备科技有限公司 Variable cross-section straight single-chip rolling mill
CN212551038U (en) * 2020-07-10 2021-02-19 山东中元自动化设备有限公司 Automatic automobile plate spring rolling mill

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1037851A (en) * 1987-08-31 1989-12-13 吉林工业大学 Precise roll-forging technology for variable-section steel sheet spring of car
CN1032911A (en) * 1987-11-05 1989-05-17 杜干城 Trapezoid cross section Steel Spring Plate and changeable section plate spring
JPH04228209A (en) * 1990-12-27 1992-08-18 Nhk Spring Co Ltd Rolling equipment for tapered leaf spring
CN1086749A (en) * 1993-10-13 1994-05-18 王桂兴 The method and apparatus of rolling changeable section plate spring
CN1144147A (en) * 1995-08-25 1997-03-05 宋玉泉 Changeable section spring rolling technology and equipment
CN101561023A (en) * 2009-05-26 2009-10-21 青岛帅潮实业有限公司 Non-cutting variable cross-section steel plate spring and end forming manufacturing technology and device thereof
EP3406366A1 (en) * 2017-05-22 2018-11-28 Frauenthal Automotive Sales GmbH Method for manufacturing a spring blade, spring blade for a leaf spring, leaf spring for a wheel suspension of a motor vehicle.
CN212551038U (en) * 2020-07-10 2021-02-19 山东中元自动化设备有限公司 Automatic automobile plate spring rolling mill
CN112024599A (en) * 2020-09-16 2020-12-04 河南凯银机械设备科技有限公司 Variable cross-section straight single-chip rolling mill
CN112024600A (en) * 2020-09-17 2020-12-04 河南凯银机械设备科技有限公司 Variable cross-section straight-through multi-sheet rolling mill

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
汽车变截面板簧轧机的成型原理及方法;李素玲等;《山东冶金》;19961231;第18卷(第6期);第32-34,54页 *

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