CN112024599A - Variable cross-section straight single-chip rolling mill - Google Patents

Variable cross-section straight single-chip rolling mill Download PDF

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Publication number
CN112024599A
CN112024599A CN202010972869.8A CN202010972869A CN112024599A CN 112024599 A CN112024599 A CN 112024599A CN 202010972869 A CN202010972869 A CN 202010972869A CN 112024599 A CN112024599 A CN 112024599A
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rolling mill
rolling
roller
frame
vertical
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CN202010972869.8A
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CN112024599B (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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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/06—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged vertically, e.g. edgers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/027—Vertical rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/08—Lubricating, cooling or heating rolls internally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/12—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by vertically displacing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/021—Twin mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/08—Lubricating, cooling or heating rolls internally
    • B21B2027/083—Lubricating, cooling or heating rolls internally cooling internally

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Metal Rolling (AREA)

Abstract

The invention discloses a variable cross-section straight-through single-piece rolling mill, wherein a plate spring hot blank forms a standard-conforming variable cross-section automobile plate spring after sequentially passing through a plate spring vertical rolling mill and a plate spring horizontal rolling mill combined system, the vertical rolling mill system and the horizontal 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 roll frame, a pair of left and right rollers are installed in the roll frame, and servo hydraulic cylinders are respectively and fixedly installed at two ends of the roll frame and used for changing rolling gaps between the left and right rollers.

Description

Variable cross-section straight single-chip rolling mill
Technical Field
The invention belongs to the technical field of automobile plate spring rolling equipment, and particularly relates to a variable cross-section straight-through single-piece rolling mill.
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, the 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 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 use of traditional automobile leaf spring variable cross section rolling mill is from purchasing automobile leaf spring band steel (flat bullet), need disconnected material earlier (length is different, for example be a plurality of 800mm long flat bullet with the flat bullet semi-manufactured goods disconnected material of 6 meters of length for the flat spring band steel's of rolling semi-manufactured goods, every monolithic still needs single-end to roll many times (adopts single-end heating rolling, the other end needs reheating and multichannel rolling technology), it is rolling that the variable cross section can be accomplished to heat twice, the natural gas consumption is great, efficiency is lower and extravagant energy.
Disclosure of Invention
The invention provides a variable cross-section straight-through single-piece rolling mill aiming at the defects and problems existing in the prior automobile plate spring production process that the material is cut off from the moment of bullet purchase and single-head rolling is mostly adopted.
The technical scheme adopted by the invention for solving the technical problems is as follows: a kind of variable cross section leads to the single-chip rolling mill, the whole heated single-chip spring flat steel after the material breaking forms the car leaf spring of variable cross section which accords with the standard after passing through the leaf spring vertical rolling mill and flat rolling mill combined system sequentially, wherein, vertical rolling mill system and flat rolling mill system include independent actuating mechanism, drive mechanism and rolling mechanism separately, the vertical rolling mill includes the rolling mill stander, its inboard bottom matches and is fitted with the horizontal roll stand, the upper and lower walls of the roll stand set up the flat cavity separately, the upper and lower ends of a pair of left and right rolls mount the corresponding roll axle bed separately, two roll axle beds of upper end match and fit in said upper flat cavity side by side, two roll axle beds of lower end match and fit in said lower flat cavity side by side; servo hydraulic cylinders are respectively and fixedly arranged at two ends of the roller frame, a connecting beam is fixed at the telescopic end of each servo hydraulic cylinder, the connecting beam at each side is respectively propped against the side surfaces of the shaft seats of the upper and lower rollers at the adjacent sides, a rolling gap exists between the left and right rollers, and the rolling gap can be gradually changed under the control of the servo hydraulic cylinders at the two sides; 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 corresponding rolls through vertical rolling universal couplings respectively; the flat rolling mechanism 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, the symmetrical positions of the two side walls are respectively provided with a vertical sliding chute, two ends of the upper roller are sleeved in the corresponding vertical sliding chutes 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 chutes; 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 corresponding positions with the same height on the left and right rollers are respectively provided with a circumferential pass with the same model, and the corresponding area of each circumferential pass of the left and right rollers is a spring-flat closed rolling channel.
And a plurality of circular hole patterns with the same type are respectively arranged at the corresponding positions with the same height on the left roller and the right roller, so that a plurality of bullet and flat closed rolling channels with different heights are formed in each pair of corresponding areas of the circular hole patterns between the left roller and the right roller.
The controllable driving and reversing driving device is characterized in that a servo hydraulic cylinder is fixedly installed at the top of the rolling mill frame, a fixed seat is fixed at the telescopic end part of the servo hydraulic cylinder, and the lower sides of the two ends of the fixed seat are respectively and fixedly connected with corresponding lifting bearing boxes.
The device also comprises an auxiliary frame fixed on one side of the rolling mill frame, wherein a roller unloading device is fixedly installed on the auxiliary frame, and the end part of a telescopic rod of the roller unloading device is used for being connected with a bearing box fixing seat at one end of the lower roller or is used for being connected with a lifting bearing box.
The auxiliary frame is provided with a track at the upper side and extends to the lower part of the roller, and sliding structures which are matched with the track are arranged at the bottoms of the fixed bearing boxes at the two ends of the lower roller.
The left side and the right side of the rolling mill frame are hinged with vertical lifting hydraulic cylinders, the telescopic ends of the lifting hydraulic cylinders on the two sides are hinged to the two sides of the roller frame through pin shafts respectively, and the roller frame can be driven to integrally lift and move after the lifting hydraulic cylinders on the two sides are controlled.
The left side and the right side of the rolling mill frame are fixed with supporting plates and provided with through holes, the two sides of the roll frame are respectively connected with hanging rods, and the hanging rods on the two sides penetrate through the corresponding supporting plate through holes and then are fixed.
A push-pull hydraulic cylinder is hinged between the driving mechanism frame and the roller frame and used for replacing the whole roller frame assembly.
The driving mechanism comprises an edgewise rolling motor and an edgewise rolling speed reducer which are fixed at the top end of a driving mechanism support, a rotating shaft of the edgewise rolling motor is connected with the input end of the edgewise rolling speed reducer through an edgewise rolling coupler, the output end of the edgewise rolling speed reducer is connected with a flange, and the flange is connected with the input end of the gear box through a spline sleeve and a corresponding spline shaft.
The invention has the beneficial effects that: the hot plate spring blank sequentially passes through the plate spring vertical rolling mill and the plate spring flat rolling mill combined system to form the automobile plate spring meeting the standard, the material is cut into a plurality of single sheets for purchasing the bullet flat, the single sheets sequentially pass through the plate spring vertical rolling mill and the plate spring flat rolling mill combined system to form the automobile plate spring meeting the standard, only one-time heating is needed, the single sheets are rolled and formed at one time, and the fuel cost is saved more.
Compared with the automatic operation realized by only replacing the robot arm with a manual work in the existing automobile plate spring processing process, the rolling mill radically changes the existing automobile variable cross-section spring rolling process, simplifies unnecessary rolling procedures, can continuously roll a single spring flat into the automobile variable cross-section plate spring which meets the standard, saves the fuel cost, reduces the pressure on environmental protection, has high production efficiency, and is beneficial to automatic online production.
The invention adopts short flow, reduces heating times, saves natural gas energy, improves the productivity by multiple times and reduces the production cost.
Drawings
FIG. 1 is a perspective view of the edgemill of the present invention.
Fig. 2 is a side elevational view of fig. 1.
Fig. 3 is a half sectional view of fig. 2.
FIG. 4 is a front view of the mating relationship of the coupling beam to the vertical slides on the sides of the roll stands.
FIG. 5 is a side view of the mating relationship of the coupling beam to the vertical side runners of the roll stand.
FIG. 6 is a front view of the flat rolling of the present invention.
FIG. 7 is a perspective view of the flat rolling of the present invention.
FIG. 8 is an end view of the flat rolling of the present invention.
Fig. 9 is a schematic structural view of the vertical roll stand.
Fig. 10 is a schematic view of the fitting relationship between the flat rolling twin rolls.
FIG. 11 is a schematic view of the closed pass configuration of the two rolls in vertical rolling.
FIG. 12 is a schematic view of the roll-rolling relationship of the vertical roll of the present invention.
FIG. 13 is a block diagram of the control system of the present invention.
FIG. 14 is a diagram of a hydraulic cylinder set for manually controlling the loading and unloading rollers.
Reference numbers in the figures: 1-a flat rolling motor, 2-a flat rolling coupler, 3-a combined speed reducer, 4-a universal coupler, 5-a servo hydraulic cylinder, 6-a rolling mill frame, 7-an upper roller, 8-a lower roller, 9-a roller unloading device, 10-a base, 11-an auxiliary frame, 13-a lifting bearing box, 14-a fixed bearing box, 15-a bearing box fixed seat, 16-a fixed seat, 17-a vertical chute, 18-a front guide opening, 19-a rear guide opening, 20-a track plate, 21-a track groove, 22-a bearing box sliding seat, 23-a front guide device, 24-a transverse moving adjusting groove, 31-a vertical rolling motor, 32-a vertical rolling coupler, 33-a vertical rolling speed reducer, 34-a connecting flange and 35-a spline sleeve, 36-a gear box, 37-a vertical rolling universal coupling, 38-a lifting hydraulic cylinder, 39-a suspender, 40-a roller frame, 41-a roller, 411-a first hole type, 412-a second hole type, 42-a connecting beam, 43-a roller shaft seat, 44-a servo hydraulic cylinder, 45-a rolling mill base, 46-a rolling mill frame, 47-a push-pull hydraulic cylinder, 48-a vertical slideway, 49-a guide platform, 50-a hole type central line, 51-a position sensor and 52-a supporting plate.
31-edgewise rolling motor, 32-edgewise rolling coupler, 33-edgewise rolling reducer, 34-connecting flange, 35-spline sleeve, 36-gear box, 37-edgewise rolling universal coupler, 38-lifting hydraulic cylinder, 39-suspender, 40-roller frame, 41-roller, 411-first pass, 412-second pass, 42-connecting beam, 43-roller shaft seat, 44-servo hydraulic cylinder, 45-rolling mill base, 46-rolling mill frame, 47-push-pull hydraulic cylinder, 48-vertical slideway, 49-guide platform, 50-pass central line and 51-position sensor.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The variable cross-section straight-through single-piece rolling mill is provided with a preposed heating furnace, after the spring flat steel is cut (the 6m spring flat steel is cut into a plurality of single pieces with the diameter of 800 mm), the whole of each single piece is heated (the two ends of each single piece are respectively heated and single-end multi-pass rolling is carried out in the prior art), after the heating, the single pieces are firstly put into a vertical rolling mill, as shown in figure 11, the vertical rolls on the left side and the right side of the vertical rolling mill adopt a servo hydraulic system simultaneously, the rolling reduction of the dynamic vertical rolls is automatically controlled, the spring flat steel is pressed into a shuttle shape, then the shuttle shape is put into a flat rolling mill, the upper roll of the flat rolling mill adopts the servo hydraulic system, the automatic control is carried out, and. The setting of the dynamic vertical roll reduction can control the inclination of the shuttle shape, so that the extension performance of the shuttle-shaped bullet is matched with the inclination after entering a flat rolling mill, and the variable cross-section bullet is produced. The scheme adopts a short flow, reduces the heating times, saves natural gas energy, improves the productivity by multiple times and reduces the production cost.
In the variable cross-section straight-through single-sheet rolling mill, a plate spring hot blank sequentially passes through a plate spring vertical rolling mill and a plate spring horizontal rolling mill combined system to form an automobile plate spring meeting the standard, as shown in fig. 11. The vertical rolling mill system and the flat rolling mill system respectively comprise a driving mechanism, a transmission mechanism, a rolling mechanism and the like.
According to the product rolling process, as shown in fig. 3, 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.
The roll gap between the left and right rolls 41 is adjusted as shown in fig. 11, and the rotation speed of the motor 31, the length and the width of each segment of the variable cross section are set in a computer. The rolling mill is started, the motor 31 is connected with the high-speed shaft of the speed reducer 33 through the coupler 32, the low-speed shaft of the speed reducer 33 is connected with the gear box 36 through the connecting flange 34 and the spline sleeve 35, the gear box 36 drives the roller 41 to rotate through the universal coupler 37, the spring flat steel is sent into the rolling mill along the guide platform 49, the roller 41 is driven by the servo hydraulic steel 44 to continuously act, and workpieces meeting the size requirement are rolled.
Specifically, as shown in fig. 1 and 2, the vertical rolling mechanism includes a rolling stand 46, a horizontal roller stand 40 is sleeved on the bottom of the inner side of the rolling stand 46 in a matching manner, flat cavities are respectively formed on the upper and lower walls of the roller stand 40 as shown in fig. 4, corresponding roller shaft seats are respectively installed at the upper and lower ends of a pair of left and right rollers 41, the upper roller shaft seats are sleeved in the upper flat cavity in a matching manner side by side, and the lower roller shaft seats are sleeved in the lower flat cavity 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.
As shown in figure 7, the flat rolling mechanism is characterized in that a servo hydraulic cylinder 5 of the flat rolling mill drives an upper roller 7 to adjust a roll gap between the upper roller 7 and a lower roller 8, and the rotating speed of a motor 1 and the length and thickness of each section of a variable-section plate spring are set in a computer. Starting the rolling mill, connecting the motor 1 with the combined speed reducer 3 through the coupler 2, driving the upper roller 7 and the lower roller 8 to rotate by the low-speed shaft end of the combined speed reducer 3 through the universal coupler 4, feeding the workpiece rolled by the vertical rolling mill into the rolling mill, driving the upper roller 7 to continuously act through the servo hydraulic cylinder 5, and finally rolling out the variable-section leaf spring.
The roller of the vertical roller mill is provided with a hole pattern, and the roller frame is driven by the lifting hydraulic cylinder to adjust the rolling center line. When the roller is replaced, the push-pull hydraulic cylinder can directly push out the roller frame. The plain mill rolls are without pass as shown in figure 10.
Specifically, referring to fig. 8 and 9, the flat rolling mechanism includes a rolling mill frame 6, a servo hydraulic cylinder 5, an upper roller 7 and a lower roller 8, the rolling mill frame 6 includes left and right side walls, vertical sliding grooves 17 are respectively provided at symmetrical positions of the two side walls, both ends of the upper roller 7 are fitted in the corresponding vertical sliding grooves 17 through a lift bearing box 13, and a vertical guide structure is provided between the lift bearing box 13 and the vertical sliding grooves 17.
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.
And a vertical controllable forward and backward driving device for driving the lifting bearing box 13 to synchronously lift is arranged at the top of the rolling mill stand 6, and the control system controls the vertical controllable forward and backward driving device to propel or lift the upper roller according to the variable cross section setting information. The circumferential side surfaces of the upper roller and the lower roller are cylindrical surfaces.
The driving mechanism comprises an edgewise rolling motor 31 and an edgewise rolling speed reducer 33 which are fixed at the top end of a driving mechanism support, a rotating shaft of the edgewise rolling motor 31 is connected with the input end of the edgewise rolling speed reducer 33 through an edgewise rolling coupler 32, the output end of the edgewise rolling speed reducer 33 is connected with a flange 34, and the flange 34 is connected with the input end of a gear box 36 through a spline sleeve 35 and a corresponding spline shaft.
In the working process, a standard spring flat steel product is usually purchased, a preposed heating furnace is required to be arranged for cutting off materials, each single sheet is heated to the rolling temperature meeting the requirement from the normal temperature, and then the single sheet enters the vertical rolling-horizontal rolling combined machine system for rolling.
The vertical rolling motor 31 is started to drive the gear box 6 through the combined speed reducer 33, the flat rolling universal coupling 34 and the spline sleeve 5, two synchronous opposite-direction output ends of the gear box 6 respectively drive the left roller and the right roller to rotate, and meanwhile, the PLC or the computer controls the roller frame 40 to ascend and descend to a proper pass height according to the position sensor. Simultaneously, a flat rolling motor 1 is started to drive an upper roller and a lower roller to rotate through a combined speed reducer 3 and a flat rolling universal coupling 4 respectively, setting parameters (such as a variable section function) are input into a controller or a computer through input equipment (digital keys), the heated single-chip automobile plate spring is sent into closed pass 411 and 412 between the left roller and the right roller 41 through a guide platform 49, and the setting parameters are input into the controller or the computer through the input equipment (digital keys) to control a servo hydraulic cylinder 44 to apply different pressures gradually. A proximity sensor can be arranged at the inlet of the guide platform 49, or a pressure sensor is arranged between the end part of each servo hydraulic cylinder and the connecting beam 42 or between the connecting beam 42 and the roller frame 40 and used for feeding back the pressure change curve of each servo hydraulic cylinder so as to ensure that the shuttle-shaped spring flat steel with the suitable inclined plane precision requirement is pressed out, the vertical rolling process is quick in time consumption, and the shuttle-shaped spring flat steel containing waste heat directly enters the flat rolling mill for rolling. And (3) feeding the plate spring rolling blank containing the waste heat into an upper roller 7 and a lower roller 8 through a front material guiding opening 18, and controlling a servo hydraulic cylinder 5 to drive the upper roller 7 to gradually push, advance and gradually contract and lift according to the setting. The way that the plate spring rolling stock enters the rolling mill from the front guide device 23 for monitoring the entering time of the plate spring rolling stock can be that a proximity sensor is arranged at the inlet of the front material guide opening 18, or a pressure sensor is arranged in the gap of the connecting position of the upper roller or the lower roller, as shown in fig. 7, and the controller judges that the plate spring rolling stock enters the rolling channel by monitoring the signals of each sensor. The upper surface and the lower surface and the vertical surface of the plate spring blank can be respectively shaped by rolling through the rolling channels of the upper roller and the lower roller to form the variable-section flat spring.
Compared with a variable cross-section direct multi-piece (continuous piece) rolling mill, the invention can directly and continuously roll the whole hot-rolled spring flat steel (20 m) with variable cross-section, and the invention needs material cutting treatment, and generally cuts the spring flat steel into a plurality of single spring flat steels with the length of about 800mm, and rolls each single spring flat steel according to steps. During the process of entering the flat rolling mill from the vertical rolling mill, 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 flat rolling mill frame 6, as shown in fig. 8 and fig. 9, 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.
Example 2: on the basis of embodiment 1, the corresponding positions at the same height on the left and right rollers 41 are respectively provided with the circumferential passes with the same type, and the corresponding areas of the circumferential passes of the left and right rollers 41 are the bullet and flat closed rolling channels. Alternatively, as shown in fig. 11, a plurality of circumferential passes of the same type are provided at corresponding positions of the left and right rolls 41 at the same height, so that a plurality of pinch-and-pinch closed rolling passes having different heights are formed in each pair of corresponding regions of the circumferential passes between the left and right rolls 41.
Example 3: based on the embodiment 2, if a plurality of circular pass with the same type are respectively arranged on the left and the right rollers 41 at different heights, namely a plurality of spring flat closed rolling channels with different heights, the rolling process is further carried out
The left side and the right side of the rolling mill frame 46 are hinged with vertical lifting hydraulic cylinders 38, the telescopic ends of the lifting hydraulic cylinders 38 on the two sides are respectively hinged with the two sides of the roller frame 40 through pin shafts, and the roller frame 40 can be driven to integrally lift and move after the lifting hydraulic cylinders 38 on the two sides are controlled. The specific moving range is that the rolling stand 46 is provided with a position sensor 51, the sensor is connected with a signal input end of a PLC controller through a data line, as shown in fig. 11, the position sensor 51 is used for monitoring the height of the center line of the groove bottom of the groove type 411 i or the groove type ii 412, and after the requirement of the height is met, the PLC controller controls the lifting hydraulic cylinders 38 on the two sides to stop upgrading and moving.
Further, after the roller frame 40 is lifted or moved down by a certain height, the roller frame 40 is fixed. As shown in fig. 5 and 6, support plates 52 are fixed to the left and right sides of the roll stand 46, and holes are formed therein, and hanger rods 39 are connected to the both sides of the roll stand 40, respectively, and the hanger rods are fixed after penetrating the corresponding support plate holes.
Example 4: on the basis of the above embodiments, a push-pull hydraulic cylinder 47 may be further hinged between the driving mechanism frame and the roll frame 40, as shown in fig. 3, the push-pull hydraulic cylinder 47 is used for replacing the whole roll frame assembly, and for maintaining and replacing the left and right roll sets with the corresponding closed pass.
Example 5: in the flat rolling mill system, a servo hydraulic cylinder 5 is used for driving an upper roller 7, the roller gap between the upper roller 7 and a lower roller 8 is adjusted, and the rotating speed of a flat rolling motor 1 and the length and thickness of each section of a variable-section plate spring are set in a computer. Starting the rolling mill, connecting a flat rolling motor 1 with a combined speed reducer 3 through a flat rolling coupler 2, driving an upper roller 7 and a lower roller 8 to rotate by a low-speed shaft end of the combined speed reducer 3 through a flat rolling universal coupler 4, feeding the spring flat steel into the rolling mill, driving the upper roller 7 to continuously act through a servo hydraulic cylinder 5, and finally rolling out the variable-section plate spring.
As shown in fig. 7-9, 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, two ends of the upper roller 7 are sleeved in the corresponding vertical sliding chutes 17 through the lifting bearing box 13, and a vertical guiding structure is provided between the lifting bearing box 13 and the vertical sliding chutes 17. As shown in fig. 9 and 10, 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 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. 7, one end of the upper roller 7 and one end of the lower roller 8 are respectively connected with the corresponding flat rolling universal couplings 4, the two flat rolling universal couplings 4 are respectively connected with the output end of the combined speed reducer 3, and the flat rolling motor 1 is connected with the input end of the combined speed reducer 3 through the flat rolling couplings 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. For example, the controllable forward and backward driving device is a servo hydraulic cylinder, or a worm and gear box is arranged at the top or the bottom of the vertical slideway, the inner end of the vertical lifting rod connected with the 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.
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 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. 8 and 9, 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.
Further, the flat rolling mill system further comprises an auxiliary frame 11 fixed on one side of the mill stand 6, and a roll unloading device 9 is fixedly installed on the auxiliary frame, wherein the end part of an expansion link of the roll unloading device is used for connecting a bearing box fixing seat at one end of a lower roll or is used for connecting a lifting bearing box 13. The auxiliary frame 11 is provided with a track at the upper side and extends to the lower part of the roller, and sliding structures matched with the track are arranged at the bottoms of the fixed bearing boxes at the two ends of the lower roller.
In this embodiment, after the bearing cartridge holder 15 is detached from the roll stand 6 (bolted connection), the bearing cartridge holder 15 is pulled outwards by the roll-dismounting device 9, so that both the lower roll and the bearing cartridges fixed at both ends are detached from the vertical runners 17 of the roll stand. After the servo hydraulic cylinder 5 drives the upper roller 7 to move downward, the track grooves 21 of the bearing box sliding seats 22 at both ends thereof are separated from the track plate 20. The lifting chocks 13 at both ends of the upper roll 7 are removed from the fixing bases 16, and the upper roll 7 is pulled out by the roll removing device 9. Thereby respectively discharging the lower roll 8 and the upper roll 7 through the roll discharging device 9. When the other group of upper roller and lower roller is replaced, the upper roller and the lower roller are respectively installed through the roller unloading device 9 in the same way.

Claims (10)

1. A variable cross-section straight-through single-piece rolling mill is characterized in that a single-piece spring flat steel which is integrally heated after material cutting sequentially passes through a plate spring vertical rolling mill and a plate spring horizontal rolling mill combined system to form a standard-met variable cross-section automobile plate spring, wherein the vertical rolling mill system and the horizontal rolling mill system respectively comprise an independent driving mechanism, a transmission mechanism and a rolling mechanism, the vertical rolling mill mechanism comprises a mill frame (46), the bottom of the inner side of the mill frame is matched and sleeved with a horizontal type roll frame (40), the upper wall and the lower wall of the roll frame (40) are respectively provided with a flat cavity, the upper end and the lower end of a pair of left and right rolls (41) are respectively provided with corresponding roll shaft bases, the upper end two roll shaft bases are sleeved in the upper flat cavity in a side-by-side matched mode, and the lower end two roll; 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), each connecting beam is respectively pressed against the side surfaces of an upper roller shaft seat (43) and a lower roller shaft seat (43) on the adjacent side, a rolling gap exists between the left roller and the right roller (41), and the rolling gap can be gradually changed under the control of the servo hydraulic cylinders (44) on the two sides; 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 mechanism 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 straight-through single-piece rolling mill according to claim 1, wherein the corresponding positions of the left and right rollers (41) at the same height are respectively provided with circumferential passes with the same type, and the corresponding regions of the circumferential passes of the left and right rollers (41) are respectively a bullet and flat closed rolling channel.
3. The variable cross-section straight-through single rolling mill according to claim 1, wherein a plurality of circumferential passes of the same type are provided at corresponding positions of the same height on the left and right rolls (41), respectively, so that a plurality of flat and resilient closed rolling passes of different heights are formed in each pair of corresponding regions of the circumferential passes between the left and right rolls (41).
4. The variable cross-section straight-through single-piece rolling mill according to claim 1, wherein the controllable forward and backward driving device is formed by fixedly mounting a servo hydraulic cylinder (5) on the top of the mill frame (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 a corresponding lifting bearing box (13).
5. A variable cross-section straight-through single-piece rolling mill according to claim 1, further comprising an auxiliary frame (11) fixed on one side of the rolling mill frame (6), wherein a roller unloading device (9) is fixedly arranged on the auxiliary frame, and the end part of a telescopic rod of the roller unloading device is used for connecting a bearing box fixing seat at one end of a lower roll or is used for connecting a lifting bearing box (13).
6. A variable-section straight-through single-chip rolling mill according to claim 5, characterized in that the auxiliary frame (11) is provided with a track at the upper side and extends below the rolls, and the bottom of the fixed bearing box at both ends of the lower roll is provided with a sliding structure which is matched with the track.
7. The variable cross-section straight-through single sheet rolling mill according to claim 1, wherein vertical lifting hydraulic cylinders (38) are hinged to the left side and the right side of the mill frame (46), the telescopic ends of the lifting hydraulic cylinders (38) on the two sides are respectively hinged to the two sides of the roll frame (40) through pin shafts, and the roll frame (40) can be driven to integrally lift and move after the lifting hydraulic cylinders (38) on the two sides are controlled.
8. The variable cross-section straight-through single-disc rolling mill according to claim 7, wherein support plates (52) are fixed and provided with through holes on the left and right sides of the mill housing (46), and hanger rods (39) are respectively connected to both sides of the roll housing (40), and the hanger rods on both sides are fixed after penetrating through the corresponding support plate through holes.
9. Straight-through single-piece rolling mill with variable cross-section according to claim 1, characterized in that between the drive frame and the roll stand (40) there is hinged a push-pull hydraulic cylinder (47) for replacing the whole roll stand assembly.
10. The variable cross-section direct single-piece rolling mill according to claim 1, wherein the driving mechanism comprises an edgewise motor (31) and an edgewise reducer (33) which are fixed at the top end of a driving mechanism support, a rotating shaft of the edgewise motor (31) is connected with the input end of the edgewise reducer (33) through an edgewise coupler (32), the output end of the edgewise reducer (33) is connected with a flange (34), and the flange (34) is connected with the input end of a gear box (36) through a spline sleeve (35) and a corresponding spline shaft.
CN202010972869.8A 2020-09-16 2020-09-16 Variable cross-section straight-through single-sheet rolling mill Active CN112024599B (en)

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CN110238198A (en) * 2019-07-11 2019-09-17 中冶华天工程技术有限公司 A kind of flat vertical shared mill train of independent driving
CN212703675U (en) * 2020-09-16 2021-03-16 河南凯银机械设备科技有限公司 Variable cross-section straight single-chip rolling mill

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JP2005279704A (en) * 2004-03-29 2005-10-13 Nippon Steel Corp Rolling line for both wide flange shape and flat bar
CN201140198Y (en) * 2007-12-29 2008-10-29 中冶东方工程技术有限公司上海分公司 Roller mill
CN106077099A (en) * 2016-07-02 2016-11-09 江苏星火特钢有限公司 A kind of flat vertical conversion milling train
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CN113145638A (en) * 2021-04-21 2021-07-23 河南凯银机械设备科技有限公司 Variable cross-section multi-section continuous five-continuous rolling system
CN113145638B (en) * 2021-04-21 2022-08-02 河南凯银机械设备科技有限公司 Variable cross-section multi-section continuous five-continuous rolling system

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