An X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment

Abstract

The invention relates to an X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment, comprising an unwinding and rewinding device, a thickness gauge, a guide device, a main rolling mill, a guide device, a thickness gauge and an unwinding and rewinding device which are sequentially arranged on an oil tank from left to right, wherein four hydraulic supports are fixedly arranged at four ends of the top of an upper frame in the main rolling mill, one end of a bottom column of the four hydraulic supports slides through the upper frame and is fixedly connected to the four ends of the top of a lower frame with the hydraulic supports; roller systems symmetrically arranged about the steel strip are arranged in the upper and lower frames on the upper and lower sides of the main rolling mill, each roller system comprises an inner working roller and two outer supporting rollers, the working rollers and supporting rollers in the upper and lower symmetrical roller systems are X-shaped, and the tangent working rollers and supporting rollers are synchronously rotated by the friction force between the rollers; the guide devices on both sides of the main rolling mill are S-shaped rollers; the roller system of the equipment has the advantages of uniform force, high rolling line rigidity, convenient replacement of working rollers, etc., and is suitable for producing high-precision metal ultra-thin strips.

Description

Technical Field

[0001] The invention belongs to the technical field of plate and strip rolling, and relates to an X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment, and in particular to an X-shaped same-side transmission combined forming rolling production metal ultra-thin strip equipment. Background Art

[0002] In recent years, the rise of new industries such as micro-manufacturing and micro-electromechanical systems has attracted widespread attention in the industry. With the development of the domestic micro-manufacturing and micro-electromechanical industries, the promotion and development of the industry requires not only the output of raw materials for making products, but also quality assurance. Therefore, the market demand for high-precision ultra-thin strips is very urgent.

[0003] Some domestic universities and research institutes have also conducted some research. Among them, the 3M rolling mill independently designed by the Northeastern University Metal Ultra-Thin Strip Team has achieved remarkable results in rolling ultra-thin strips. However, the 3M rolling mill is in its infancy and currently has some problems. The 3M rolling mill is a four-roller reversible asynchronous rolling mill that uses mechanical pressing and AC motor drive. The rolling mill as a whole and the unwinding and rewinding device are installed separately. The four-roller rolling as a whole is subjected to upward force on the frame, which makes the rigidity of the entire production line lower, affecting the accuracy of the metal ultra-thin strip during production; at the same time, high-quality ultra-thin strips have extremely high requirements for the surface roughness of the working rolls. In formal production, one pass must be ground, and the 3M rolling mill has a complicated process for replacing the working rolls and is prone to strip breakage, so improvements need to be made to these problems. Summary of the invention

[0004] In view of this, in order to solve the problems existing in the above-mentioned existing ultra-thin metal strip rolling process, the present invention provides an X-type same-side transmission combined forming metal ultra-thin strip rolling equipment. The roller system of the equipment has the advantages of uniform force, high rolling line stiffness, and convenient replacement of working rollers. It is suitable for the production of high-precision ultra-thin metal strips.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] An X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment, including an unwinding and unwinding device, a thickness gauge, a guide device, a main rolling mill, a guide device, a thickness gauge and an unwinding and unwinding device arranged on an oil tank from left to right in sequence, the main rolling mill including an upper frame and a lower frame symmetrical in upper and lower directions, four hydraulic supports are fixedly provided at the four ends of the top of the upper frame, and columns are fixedly provided at the bottoms of the four hydraulic supports, one end of the four columns slides through the upper frame and the four ends of the top of the lower frame and are fixedly connected to the hydraulic supports; roller systems symmetrically arranged about the steel strip are arranged in the upper and lower frames on the upper and lower sides of the main rolling mill, each roller system includes an inner working roller and two outer supporting rollers, the working rollers and supporting rollers in the upper and lower symmetrical roller systems are X-shaped, and the circumscribed working rollers and supporting rollers rotate synchronously through the friction between the rollers; the guide devices on both sides of the main rolling mill are S-shaped rollers.

[0007] Furthermore, the upper frame is connected by two symmetrical L-shaped plates, and four hydraulic struts are fixedly installed on the inner side of the L-shaped plate of the upper frame. The top of the hydraulic strut is movably connected to the upper support roller bearing seat, and the tops of the four hydraulic struts are movably connected to the two ends of the bottom of the upper support roller bearing seat; the interior of the upper support roller bearing seat is connected to two upper support rollers through bearing rolling, and the upper working roller bearing seat is movably connected to the upper working roller bearing seat at the connection of the L-shaped plate of the upper frame below the upper support roller bearing seat. An upper working roller is connected to the upper working roller bearing seat through bearing rolling, and one end of the upper working roller is fixedly connected to the output shaft of the upper main motor through the transmission shaft and the first reduction box, and the bottom of the upper main motor is fixedly connected to the top of the oil tank on the side away from the main rolling mill body;

[0008] The lower frame is connected by two symmetrical inverted L-shaped plates, and the lower support roller bearing seat is movably connected inside the lower frame. Two lower support rollers are connected inside the lower support roller bearing seat through rolling bearings. The lower working roller bearing seat is connected to a lower working roller through rolling bearings. One end of the lower support roller is fixedly connected to the output shaft of the lower main motor through the transmission shaft and the second reduction box, and the bottom of the lower main motor is fixedly connected to the top of the oil tank on the side away from the main rolling mill body; the upper main motor is a high-power motor, and the lower main motor is a low-power motor.

[0009] Furthermore, the middle side of the L-shaped plate connection of the upper frame is slidably connected to the two sides of the upper working roll bearing seat through a spring clamp; the lower working roll bearing seat is movably connected to the two sides of the top of the lower support roll bearing seat through four spring clips symmetrically arranged at the bottom of both ends, and an inverted trapezoidal through groove is opened on the oil tank below the lower support roll bearing seat, and a pad block matching the through groove is slidably provided at the bottom of the lower support roll bearing seat.

[0010] Furthermore, an oil spray device is fixedly provided on both sides of the bottom of the upper frame near the upper working roll bearing seat, and the oil spray device includes an oil pipe and an oil nozzle, and the oil pipe is connected to the oil tank. Beneficial effect: When the metal pole strip is rolled, the valve of the oil spray device is opened, and the rolling oil is directly sprayed on the metal pole strip through the oil pipe and the oil nozzle. The rolling oil plays a lubricating role, ensures the surface quality of the metal pole strip, and improves the performance of the strip.

[0011] Furthermore, purge devices are fixedly arranged at the rolling material inlet and outlet on both sides of the upper frame, and each purge device includes a card slot fixed obliquely at the bottom of the upper frame and an air duct and a nozzle fixedly installed in the card slot, and the air duct is connected to the air compressor. Beneficial effect: The gas in the air compressor acts on the metal strip through the air duct and the nozzle, effectively removing the residual rolling oil on the surface of the metal strip without damaging the surface quality of the strip.

[0012] Furthermore, the S-shaped roller includes a first straightening roller, a pressing roller, and a second straightening roller in sequence. The first straightening roller and the second straightening roller each include an upper straightening roller and a lower straightening roller. The upper straightening roller is fixed to the oil tank through a bracket, and the end of the lower straightening roller is clamped on the bracket through a bolt fastener. Beneficial effect: The distance between the upper straightening roller and the lower straightening roller is adjusted by the bolt fastener so that the two rollers clamp the metal pole strip. The metal pole strip passes through the gap between the two rollers of the first straightening roller, the bottom of the pressing roller, and the gap between the two rollers of the second straightening roller in sequence. The rollers used in the first straightening roller, the pressing roller, and the second straightening roller are rubber rollers, which effectively reduce the "C" warping and other plate shape problems, and will not damage the surface of the metal pole strip.

[0013] Furthermore, the unwinding and rewinding device includes a reel, a reduction box and a reduction motor, the output end of the reduction motor is rotationally connected to one side of the reduction box through a coupling, and the other side of the reduction box is rotationally connected to one end of the reel through an internal gear shaft. Beneficial effect: The unwinding and rewinding device is convenient for providing power for the transmission of the metal strip.

[0014] Furthermore, an ironing device is arranged outside the unwinding and rewinding device, and each ironing device includes an ironing roller and an ironing bracket. Beneficial effect: the ironing bracket drives the ironing roller by hydraulic pressure, and the ironing roller is tightly pressed on the reel of the unwinding and rewinding device during operation. With the ironing roller acting on the reel, the plate shape problems such as rib marks on the metal strip can be effectively reduced.

[0015] Furthermore, a guide roller is arranged between the unwinding and rewinding device and the corresponding thickness gauge. Beneficial effect: The guide roller is a rubber roller, which guides the metal strip on the rolling line, effectively reducing the "C" warping and other plate shape problems, and will not damage the surface of the metal strip.

[0016] Furthermore, four positioning blocks are symmetrically slidably arranged on the front and back sides of the upper frame and the lower frame. Beneficial effect: The positioning blocks are used to realize the fixed connection between the upper frame and the upper support roller bearing seat and the upper working roller bearing seat, and the fixed connection between the lower frame and the lower support roller bearing seat and the lower working roller bearing seat. Opening the positioning blocks facilitates the disassembly and assembly of the upper working roller and the lower working roller.

[0017] The beneficial effects of the present invention are:

[0018] 1. The X-type same-side transmission combined forming metal ultra-thin strip rolling equipment disclosed in the present invention mainly includes an unwinding and winding device, a thickness gauge, a guide device and a main rolling mill. The upper frame of the main rolling mill is provided with an upper support roller and an upper working roller, and the lower frame is provided with a lower support roller and a lower working roller. The four hydraulic supports at the top of the upper frame hydraulically drive the upper frame to move downward along the column until the upper working roller and the lower working roller contact and press, so that the entire rolling system is arranged in an "X" shape, and the upper frame is hydraulically driven to be pressed down as a whole, which can accurately control the rolling force during rolling. The upper working roller bearing seat is slidably installed inside the upper frame and fixed with a spring clamp, which effectively reduces the steps and time of replacing the working rollers each time. The upper main motor uses a high-power motor to drive the upper working roller, and the lower main motor uses a low-power motor to drive the lower support roller system. The lower support roller system drives the lower working roller, so the upper working roller with a fast speed is the active roller, and the lower working roller with a slow speed is the passive roller, which can accurately control the speed ratio and reduce the power consumption of the entire metal strip rolling line.

[0019] 2. The X-type same-side transmission combined forming metal ultra-thin strip rolling equipment disclosed in the present invention adopts the upper working roll bearing seat and the upper support roll bearing seat in the upper frame by the pull-out installation mode and the upper frame drives the two bearing seats to lift and press down the movement mode, which is convenient for replacing the working roll when the metal strip passes through the roll gap. And the asynchronous transmission is adopted, which has a strong thinning ability and high production efficiency for the metal strip.

[0020] 3. The X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment disclosed in the present invention adopts four-column hydraulic pressing. When pressing down, the hydraulic system drives the entire upper frame to act on the roller system. The rolling force is accurate and uniform, which is conducive to controlling the accurate plate shape of the metal ultra-thin strip. The use of a working roller transmission and a lower support roller system transmission can reduce the deflection of the working roller during rolling and increase the service life of the working roller. The S-shaped rollers, guide rollers, ironing rollers and other devices on the rolling line can effectively reduce the plate shape defects of the metal ultra-thin strip. The air purge method is used to remove the residual rolling oil on the metal ultra-thin strip at the outlet, which not only effectively cleans the metal ultra-thin strip, but also does not cause damage to the surface of the strip.

[0021] 4. The X-type same-side transmission combined forming metal ultra-thin strip rolling equipment disclosed in the present invention adopts a high-precision servo motor, which can accurately control the coordination between the front and rear tensions acting on the metal strip and the instantaneous speed of the thin strip movement when the rolling mill is started and stopped, effectively reducing the situation of strip breakage. The precise control is conducive to the rolling mill to produce extremely thin metal strips; the working rolls adopt high-power motors, and the support roll system transmission adopts low-power motors. The upper working roll is the active roll, and the lower working roll is the passive roll, which is convenient for controlling the speed ratio and reducing the overall power consumption of the rolling mill.

[0022] 5. The X-type same-side transmission combined forming metal ultra-thin strip rolling equipment disclosed in the present invention has a rolling mill roll system consisting of six rolls distributed in an "X" shape. During rolling by a traditional four-roll asynchronous rolling mill, the entire roll system only applies an upward force to the frame, which will cause a large tolerance on the product. However, the force distribution of the rolling mill roll system of the present invention acts evenly on the frame, and the error of the rolled product is smaller.

[0023] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0025] Figure 1 The structural diagram of the X-type same-side transmission combined forming metal ultra-thin strip rolling equipment of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 2 The structural diagram of the X-type same-side transmission combined forming metal ultra-thin strip rolling equipment of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle part;

[0028] Figure 4 The structural diagram of the X-type same-side transmission combined forming metal ultra-thin strip rolling equipment of the present invention is shown in FIG. Figure 3 ;

[0029] Figure 5 For the present invention Figure 1 Roll system diagram of working rolls and backup rolls in the main rolling mill;

[0030] Figure 6 It is a cross-sectional view of the main rolling mill in the X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment of the present invention;

[0031] Figure 7 It is a top view of the X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment of the present invention.

[0032] Reference numerals: upper frame 1, lower frame 2, oil tank 3, hydraulic strut 11, upper support roller bearing seat 12, upper support roller system 13, first upper support roller 1301, second upper support roller 1302, upper working roller bearing seat 14, upper working roller 15, first reduction gearbox 16, upper main motor 17, spring clamp 18, lower support roller bearing seat 21, lower support roller system 22, first lower support roller 2201, second lower support roller 2202, lower working roller bearing seat 23, lower working roller 24 , second reduction box 25, lower main motor 26, column 27, hydraulic support 28, spring buckle 29, purge device 4, air duct 41, nozzle 42, S-shaped roller 5, first straightening roller 51, pressing roller 52, second straightening roller 53, thickness gauge 6, unwinding device 7, reel 71, reduction box 72, reduction motor 73, ironing device 8, ironing roller 81, ironing bracket 82, oil injection device 9, oil pipe 91, oil nozzle 92, guide roller 10, positioning block 101, cushion block 102. DETAILED DESCRIPTION

[0033] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0035] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] like Figures 1 to 7The X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment shown includes an unwinding and rewinding device 7, a thickness gauge 6, a guide device, a main rolling mill, a guide device, a thickness gauge 6 and an unwinding and rewinding device 7 arranged on the oil tank 3 from left to right. The main rolling mill is provided with roller systems symmetrically arranged about the steel strip on the upper and lower sides. Each roller system includes an inner working roller and two outer supporting rollers. The working rollers and supporting rollers in the upper and lower symmetrical roller systems are X-shaped, and the tangential working rollers and supporting rollers rotate synchronously through the friction between the rollers.

[0037] The main rolling mill includes an upper frame 1 and a lower frame 2 which are symmetrical in upper and lower directions. Four hydraulic supports 28 are fixedly provided at the four ends of the top of the upper frame 1. Vertical columns 27 are fixedly provided at the bottoms of the four hydraulic supports 28. One end of the four vertical columns 27 slides through the four ends of the tops of the upper frame 1 and the lower frame 2 and is fixedly connected to the hydraulic supports 28.

[0038] The upper frame 1 is a butt joint of two symmetrical L-shaped plates. Four hydraulic struts 11 are fixedly installed on the inner side of the L-shaped plate of the upper frame. The top of the hydraulic struts 11 is movably connected to the upper support roller bearing seat 12. The tops of the four hydraulic struts 11 are movably connected to the two ends of the bottom of the upper support roller bearing seat 12. Pressure sensors are arranged on both sides of the top of the upper support roller bearing seat 12. The upper support roller bearing seat 12 is internally connected to two upper support roller systems 13 through bearing rolling, which are respectively recorded as the first upper support roller 1301 and the second upper support roller 1302. The upper frame L-shaped plate connection below the upper support roller bearing seat 12 is movably connected to the upper working roller bearing seat 14. The upper working roller bearing seat 14 is internally connected to an upper working roller 15 through bearing rolling. One end of the upper working roller 15 is fixedly connected to the output shaft of the upper main motor 17 through the transmission shaft and the first reduction box 16. The bottom of the upper main motor 17 is fixedly connected to the top of the main motor base by screws. The bottom of the main motor base is fixedly connected to the top of the oil tank 3 away from the main rolling mill body. The middle side of the L-shaped plate connection of the upper frame is slidably connected to the two sides of the upper working roll bearing seat 14 through a spring clamping plate 18.

[0039] An oil spray device 9 is fixedly provided on both sides of the bottom of the upper frame 1 near the upper working roll bearing seat 14. The oil spray device 9 includes an oil pipe 91 and an oil nozzle 92. The oil pipe 91 is connected to the oil tank 3. When the metal strip is rolled, the valve of the oil spray device 9 is opened, and the rolling oil is directly sprayed on the metal strip through the oil pipe 91 and the oil nozzle 92. The rolling oil plays a lubricating role, ensures the surface quality of the metal strip, and improves the performance of the strip.

[0040] The lower frame 2 is connected by two symmetrical inverted L-shaped plates, and the lower support roller bearing seat 21 is movably connected inside the lower frame 2. The lower support roller bearing seat 21 is connected with a lower support roller system 22 through a bearing rolling connection, which are respectively recorded as the first lower support roller 2201 and the second lower support roller 2202. The lower working roller bearing seat 23 is movably connected to the lower working roller bearing seat 23 at the connection of the lower frame L-shaped plate above the lower support roller bearing seat 21. A lower working roller 24 is connected to the lower working roller bearing seat 23 through a bearing rolling connection. One end of the first lower support roller 2201 and the second lower support roller 2202 are fixedly connected to the output shaft of the lower main motor 26 through a transmission shaft and a second reduction box 25. The bottom of the lower main motor 26 is fixedly connected to the top of the oil tank 3 on the side away from the main rolling mill body by screws.

[0041] The bottom of the first reduction box 16 is fixedly connected to the top of the second reduction box 25 , and the bottom of the second reduction box 25 is fixedly connected to a U-shaped groove opened at the lower part of the main motor base at the top of the oil tank 3 .

[0042] The lower working roll bearing seat 23 is movably connected to the two sides of the top of the lower support roll bearing seat 21 through four spring buckles 29 symmetrically arranged at the bottom of both ends. An inverted trapezoidal through groove is provided on the oil tank 3 below the lower support roll bearing seat 21, and a pad 102 adapted to the through groove is slidably provided at the bottom of the lower support roll bearing seat 21. A turntable with a handle is fixedly installed at the front end of the pad 102, and a lifting device adapted to the turntable is arranged inside the pad 102. By rotating the turntable, the pad 102 can be lifted and lowered in the through groove, which is convenient for the lower support roll bearing seat 21, the lower support roll system 22, the lower working roll bearing seat 23, and the lower working roll 24 to be completely extracted and replaced.

[0043] Small wheels are provided at the bottom of both sides of the upper support roller bearing seat 12 and the lower support roller bearing seat 21. The roll surface width of the upper working roll 15 and the lower working roll 24 is 200-300 mm, and the width of the rolled metal strip is 50-260 mm.

[0044] A purge device 4 is fixedly installed at the rolling material inlet and outlet on both sides of the upper frame 1. Each purge device 4 includes a slot obliquely fixed to the bottom of the upper frame 1 and an air duct 41 and a nozzle 42 fixedly installed in the slot. The air duct 41 is connected to the air compressor. The gas in the air compressor acts on the metal strip through the air duct 41 and the nozzle 42, effectively removing the residual rolling oil on the surface of the metal strip without damaging the surface quality of the strip.

[0045] The guide devices on both sides of the main rolling mill are S-shaped rollers 5, which include the first straightening roller 51, the pressing roller 52 and the second straightening roller 53 in sequence. The first straightening roller 51 and the second straightening roller 53 both include an upper straightening roller and a lower straightening roller. The upper straightening roller is fixed on the oil tank 3 through a bracket, and the end of the lower straightening roller is clamped on the bracket. The distance between the upper straightening roller and the lower straightening roller is adjusted by bolt fasteners so that the two rollers clamp the metal strip. The metal strip passes through the gap between the two rollers of the first straightening roller 51, the bottom of the pressing roller 52, and the gap between the two rollers of the second straightening roller 53 in sequence. The rollers used in the first straightening roller 51, the pressing roller 52 and the second straightening roller 53 are rubber rollers, which effectively reduce the "C" warping and other plate shape problems, and will not damage the surface of the metal strip.

[0046] On both sides of the guide device are thickness gauges 6, and a slide rail is provided at the bottom of the thickness gauge 6 to facilitate the movement of the thickness gauge 6 to detect the rolled thickness of the metal strip. On both sides of the guide device are unwinding and winding devices 7 of the same structure. The device of the present invention is a reversible rolling device, and the unwinding and winding device 7 changes depending on the rolling direction. When the rolling direction is from left to right, the unwinding and winding device 7 on the left is used as an unwinding device, and the unwinding and winding device 7 on the right is used as a winding device; when the rolling direction is from right to left, the unwinding and winding device 7 on the left is used as a winding device, and the unwinding and winding device 7 on the right is used as an unwinding device.

[0047] The unwinding and rewinding devices 7 each include a reel 71, a reduction box 72 and a reduction motor 73. The output end of the reduction motor 73 is rotationally connected to one side of the reduction box 72 through a coupling, and the other side of the reduction box 72 is rotationally connected to one end of the reel 71 through an internal gear shaft. An ironing device 8 is provided on the outside of the unwinding and rewinding devices 7. Each ironing device 8 includes an ironing roller 81 and an ironing bracket 82. The ironing bracket 82 drives the ironing roller 81 through hydraulic pressure. When working, the ironing roller 81 is tightly pressed on the reel 71 of the unwinding and rewinding device 7. The ironing roller 81 acts on the reel 71. The ironing roller 81 is a rubber roller, which can effectively reduce the plate shape problems such as rib marks on the metal strip, and will not damage the surface of the metal strip.

[0048] A guide roller 10 is arranged between the unwinding and reeling device 7 and the corresponding thickness gauge 6. The guide roller 10 is a rubber roller, which guides the metal strip on the rolling line, effectively reducing plate shape problems such as "C" warping, and will not damage the surface of the metal strip.

[0049] Four positioning blocks 101 are symmetrically slidably arranged on the front and back of the upper frame 1 and the lower frame 2. The positioning blocks 101 are used to realize the fixed connection between the upper frame 1 and the upper support roll bearing seat 12 and the upper working roll bearing seat 14, and the fixed connection between the lower frame 2 and the lower support roll bearing seat 21 and the lower working roll bearing seat 23. Opening the positioning blocks 101 facilitates the disassembly and assembly of the upper working roll 15 and the lower working roll 24.

[0050] The upper main motor 17 , the lower main motor 26 and the reduction motor 73 are all high-precision DC servo motors. The upper main motor 17 is a high-power motor, and the lower main motor 26 is a low-power motor.

[0051] Taking the rolling of 0.1mm×200mm 430 stainless steel strip into 0.01mm×200mm 430 stainless steel ultra-thin strip as an example, the X-type same-side transmission combined forming metal ultra-thin strip rolling equipment has the following specific operating steps:

[0052] The 0.1mm×200mm 430 stainless steel strip is put onto the reel 71 of the unwinding and rewinding device 7 on the left side of the rolling mill through the uncoiler. During loading, the ironing rollers 81 in the outermost ironing devices 8 on both sides of the oil tank 3 are raised by the hydraulically driven ironing brackets 82, which does not affect the coiling of the stainless steel strip.

[0053] S1: The free end of the stainless steel strip on the reel 71 of the left unwinding device is passed through the top of the left guide roller 10, the roller gap of the first straightening roller 51 on the left, the bottom of the left pressing roller 52, the roller gap of the second straightening roller 53 on the left, and the roller gap between the upper working roller 15 and the lower working roller 24 in sequence. The thin strip after passing through the roller gap is passed through on the right side in a symmetrical manner to the left side until the free end of the stainless steel strip sticks to the reel 71 of the right winding device and is wound for more than two weeks to ensure that the stainless steel strip will not fall off during pre-tensioning; then adjust the nuts under the first straightening roller 51 and the second straightening roller 53 on both sides so that the two rollers clamp the stainless steel strip.

[0054] The rollers used when the stainless steel strip passes through the S-shaped roller 5 and the guide roller 10 are rubber rollers, which effectively reduce the "C" warping and other plate shape problems, and will not damage the surface of the stainless steel strip; in order not to affect the threading and ensure the accuracy of the two thickness gauges 6, the thickness gauges 6 slide to the side away from the metal stainless steel strip through the slide rail when threading. The rolling direction from left to right is set through the external control system, and then the reduction motor 73 of the unwinding device and the winding device is started. The reels 71 at both ends provide 20kg of tension for the stainless steel strip, so that the stainless steel strip is stretched under the action of tension, but it will not break, and the stainless steel strip is straight after tensioning.

[0055] S2: Through the external control system, the hydraulic system in the four hydraulic pillars 28 at the four ends of the top of the upper frame 1 is started, and the upper frame 1 drives the upper support roller bearing seat 12, the two upper support rollers, the upper working roller bearing seat 14 and the upper working roller 15 to move downward along the column 27, and the upper working roller 15 and the lower working roller 24 contact the upper frame 1 and continue to move downward, and the upper working roller 15 drives the upper working roller bearing seat 14 to move upward relatively, and tightens the spring clamp 18 inside the upper frame 1, and the lower working roller 24 drives the lower working roller bearing seat 23 to make the spring buckle 29 inside it contact and tighten the lower support roller bearing seat 21, and finally the upper support roller system 13, the upper working roller 15, the lower working roller 24, and the lower support roller system 22 are in "X" shape contact, and the pressure sensors on both sides of the top of the upper support roller bearing seat 12 display the first rolling force of 12t, and the pressure change range is about 50kg.

[0056] S3: After the rolling force is set, increase the power of the reduction motor 73 of the unwinding device and the winding device so that the tensions on both sides reach the front tension of 213kg and the rear tension of 233kg of the first pass respectively. The winding device provides the front tension and the unwinding device provides the rear tension.

[0057] S4: After setting the front and rear tensions and rolling force, the two thickness gauges 6 slide to this end of the stainless steel strip through the slide rails, and display the real-time strip thickness on the external display screen; open the valve of the oil spray device 9, and the rolling oil is directly sprayed onto the stainless steel strip through the oil pipe 91 and the oil nozzle 92. The rolling oil plays a lubricating role, ensuring the surface quality of the stainless steel strip and improving the performance of the strip; open the purge device 4 on the rolling outlet side, and the gas in the air compressor acts on the stainless steel strip through the air duct 41 and the nozzle 42, effectively removing the residual rolling oil on the surface of the stainless steel strip without damaging the surface quality of the strip; start the outermost ironing devices 8 on both sides of the oil tank 3, and the ironing roller 81 is hydraulically driven by the ironing bracket 82, and is tightly pressed on the reel 71 of the unwinding device and the winding device. The ironing roller 81 acts on the reel 71, which can effectively reduce the plate shape problems such as rib marks on the stainless steel strip.

[0058] S5: Start the upper main motor 17 and the lower main motor 26. The upper main motor 17 provides a rotation speed to the upper working roll 15 through the transmission shaft and the first reduction box 16. The lower main motor 26 provides a rotation speed to the first lower support roll 2201 and the second lower support roll 2202 through the transmission shaft and the second reduction box 25. The first lower support roll 2201 and the second lower support roll 2202 drive the lower working roll 24 to rotate. The upper main motor 17 is a high-power motor, and the lower main motor 26 is a low-power motor. Therefore, the upper main motor 17 provides a faster speed. The upper working roll 15 is acted on by the lower main motor 26, which provides a slower speed to act on the lower working roll 24. Therefore, the upper working roll 15 is called the active roll, and the lower working roll 24 is called the passive roll, which is convenient for controlling the speed ratio and reducing the overall power consumption of the rolling mill; the upper main motor 17 drives the upper working roll 15 to rotate, and the lower main motor 26 drives the lower support roll system 22 to rotate. The support roll has a larger diameter and thus a greater rigidity, so the disturbance of the support roll is small during operation, which reduces the disturbance of the entire transmission system and prolongs the life of the working roll and the support roll; at the same time, during the rolling process, The overall force of the roll system is evenly distributed on the entire frame, which increases the rigidity of the rolling roll system, reduces the thickness tolerance of the extremely thin metal strip, and improves the product quality. When just started, the rotation speed of the upper working roll 15 and the lower working roll 24 is the same, which is 1m / min. After running stably for 10 seconds, the lower working roll 24 is used as the reference roll, and the first pass speed ratio is set to 1.2. The ratio of the rotation speed of the upper working roll 15 to the rotation speed of the lower working roll 24 is the speed ratio. The stainless steel strip starts asynchronous rolling, and the rolling speed is increased to the first pass rolling speed of 30m / min. At the same time, the two The deceleration motor 73 of the unwinding device and the winding device on the side is used to coil up in accordance with the rolling speed; during the speed increase process, the thin strip may have a flat shape problem, and it is necessary to control the four ends of the upper frame 1 by controlling the four columns 27 and the hydraulic support 28 to finely adjust the rolling force acting on the thin strip until the thin strip no longer has a flat shape; when there are a few turns of stainless steel strip remaining on the unwinding device reel 71, the rolling is stopped. During the stopping process, the speed ratio is first reduced to 1, and then the rolling speed is gradually reduced to stop. This stopping process does not exceed 30S, which effectively reduces the breakage of stainless steel strip. After the first rolling, the thickness of 430 stainless steel is 0.080mm.

[0059] In order to ensure the surface quality of the final 430 stainless steel ultra-thin strip, the working roll needs to be replaced after each rolling process, and the support roll needs to be replaced after the entire rolling process is completed. The replaced working rolls and support rolls need to be repaired in time. The steps for changing the working rolls are as follows: close the valve of the oil injection device 9 and the purge device 4, readjust the front and rear tensions to the preset tension of 20kg, control the hydraulic support 28 through the control system to lift the upper frame 1, and the upper frame 1 drives the upper support roll bearing seat 12, the upper support roll system 13, the upper working roll bearing seat 14 and the upper working roll 15 to return to the initial position upward, open all the positioning blocks 101 at the front of the rolling mill body, remove the transmission shaft connected to the upper working roll 15, and pull the upper working roll bearing seat 14 and the upper working roll 15 out of the upper frame 1, and directly take out the lower working roll bearing seat 23 and the lower working roll 24. After replacing the upper and lower working rolls 24, install them in the original way and carry out the next rolling process.

[0060] Support roll changing steps: stop the machine after the entire rolling process is completed, take out the rolled ultra-thin strip from the rolling line, lower the hydraulic support rod 11 through external control until the small wheel on the side of the upper support roll bearing seat 12 contacts the upper frame 1, open all the positioning blocks 101 at the front of the rolling mill, pull out the upper support roll bearing seat 12 and the upper support roll system 13, shake the turntable handle in front of the pad 102 under the lower support roll bearing seat 21 until the small wheels on both sides of the lower support roll bearing seat 21 contact the track on the surface of the oil tank 3, and pull out the lower support roll bearing seat 21, the lower support roll system 22, the lower working roll bearing seat 23, and the lower working roll 24 as a whole. After replacing the support rolls, install them in the original way to prepare for the next rolling process.

[0061] S6: After each rolling pass, the rolling direction needs to be changed, and steps S2 to S4 are repeated, but the rolling force, front and rear tension, speed ratio, and rolling speed are reset until the target thickness is reached. The rolling parameters for the following times are:

[0062] Second pass: rolling force 12t, front tension 192kg, rear tension 213kg, rolling speed 28m / min, speed ratio 1.2, rolling thickness 0.064.

[0063] The third pass: rolling force 12t, front tension 150kg, rear tension 192kg, rolling speed 25m / min, speed ratio 1.3, rolling thickness 0.045.

[0064] The fourth pass: rolling force 13t, front tension 114kg, rear tension 150kg, rolling speed 22m / min, speed ratio 1.3, rolling thickness 0.031.

[0065] The fifth pass: rolling force 16t, front tension 88kg, rear tension 114kg, rolling speed 20m / min, speed ratio 1.3, rolling thickness 0.022.

[0066] The sixth pass: rolling force 18t, front tension 65kg, rear tension 88kg, rolling speed 15m / min, speed ratio 1.3, rolling thickness 0.015.

[0067] The seventh pass: rolling force 20t, front tension 47kg, rear tension 65kg, rolling speed 10m / min, speed ratio 1.3, rolling thickness 0.010.

[0068] S7: After the seventh rolling pass is completed, lift the upper frame 1, close the unwinding device 7, the purging device 4, and the oil spraying device 9, cut the 430 stainless steel ultra-thin strip on the reel 71 of the unwinding device 7, connect the free end of the ultra-thin strip to the coiler, start the coiler until the thin strip on the reel 71 is completely coiled, remove the tail, pack it, and put it into storage after labeling.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. An X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment, characterized in that: It includes an unwinding and winding device, a thickness gauge, a guide device, a main rolling mill, a guide device, a thickness gauge and an unwinding and winding device which are arranged on the oil tank from left to right. The main rolling mill includes an upper frame and a lower frame which are symmetrical from top to bottom. Four hydraulic supports are fixedly arranged at the four ends of the top of the upper frame. The bottoms of the four hydraulic supports are fixedly provided with columns. One end of the four columns slides through the four ends of the top of the upper frame and the lower frame and is fixedly connected to the hydraulic supports. Roll systems symmetrically arranged about the steel strip are arranged in the upper and lower frames on the upper and lower sides of the main rolling mill. Each roll system includes an inner working roll and two outer supporting rolls. The working rolls and supporting rolls in the upper and lower symmetrical roll systems are X-shaped. The tangent working rolls and supporting rolls rotate synchronously through the friction between the rolls. The guide devices on both sides of the main rolling mill are S-shaped rolls. The upper frame is formed by two symmetrical L-shaped plates connected to each other, and four hydraulic struts are fixedly installed on the inner side of the L-shaped plate of the upper frame, and the top of the hydraulic struts is movably connected to the upper support roller bearing seat, and the tops of the four hydraulic struts are movably connected to the two ends of the bottom of the upper support roller bearing seat; the upper support roller bearing seat is internally connected to two upper support rollers through bearing rolling, and the upper working roller bearing seat is movably connected to the upper working roller bearing seat at the connection of the L-shaped plate of the upper frame below the upper support roller bearing seat, and an upper working roller is internally connected to the upper working roller through bearing rolling, and one end of the upper working roller is fixedly connected to the output shaft of the upper main motor through a transmission shaft and a first reduction box; The lower frame is connected by two symmetrical inverted L-shaped plates. The lower frame is movably connected to the lower support roller bearing seat. Two lower support rollers are connected to the lower support roller bearing seat through bearing rolling. The lower working roller bearing seat is connected to a lower working roller through bearing rolling. One end of the lower support roller is fixedly connected to the output shaft of the lower main motor through the transmission shaft and the second reduction box. The upper main motor is a high-power motor, and the lower main motor is a low-power motor. The middle side of the L-shaped plate connection of the upper frame is slidably connected to the two sides of the upper working roll bearing seat through a spring clamp; the lower working roll bearing seat is movably connected to the two sides of the top of the lower support roll bearing seat through four spring buckles symmetrically arranged at the bottom of both ends, and an inverted trapezoidal through groove is provided on the oil tank below the lower support roll bearing seat, and a pad block matching the through groove is slidably provided at the bottom of the lower support roll bearing seat.

2. The X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment as claimed in claim 1, characterized in that: An oil spray device is fixedly provided on both sides of the bottom of the upper frame close to the upper working roll bearing seat. The oil spray device includes an oil pipe and an oil nozzle, and the oil pipe is connected to the oil tank.

3. The X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment as claimed in claim 1, characterized in that: Blowing devices are fixedly arranged at the rolling material inlet and outlet on both sides of the upper frame. Each blowing device comprises a slot obliquely fixed to the bottom of the upper frame and an air duct and a nozzle fixedly installed in the slot. The air duct is connected to the air compressor.

4. The X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment as claimed in claim 1, characterized in that: The S-shaped rollers sequentially include a first straightening roller, a pressing roller and a second straightening roller. The first straightening roller and the second straightening roller each include an upper straightening roller and a lower straightening roller. The upper straightening roller is fixed to the oil tank through a bracket, and the end of the lower straightening roller is clamped on the bracket through bolt fasteners.

5. The X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment as claimed in claim 1, characterized in that: The unwinding and rewinding devices all include a reel, a reduction box and a reduction motor. The output end of the reduction motor is rotationally connected to one side of the reduction box through a coupling, and the other side of the reduction box is rotationally connected to one end of the reel through an internal gear shaft.

6. The X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment as claimed in claim 1, characterized in that: An ironing device is arranged outside the unwinding and rewinding device, and each ironing device comprises an ironing roller and an ironing bracket.

7. The X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment as claimed in claim 1, characterized in that: A guide roller is arranged between the unwinding and rewinding device and the corresponding thickness gauge.

8. The X-shaped same-side transmission combined forming metal ultra-thin strip rolling equipment as claimed in claim 1, characterized in that: Four positioning blocks are symmetrically and slidably arranged on the front and back sides of the upper frame and the lower frame.

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