CN111842491A - Servo asynchronous two-roller powder rolling mill - Google Patents
Servo asynchronous two-roller powder rolling mill Download PDFInfo
- Publication number
- CN111842491A CN111842491A CN201910897351.XA CN201910897351A CN111842491A CN 111842491 A CN111842491 A CN 111842491A CN 201910897351 A CN201910897351 A CN 201910897351A CN 111842491 A CN111842491 A CN 111842491A
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- China
- Prior art keywords
- roller
- servo
- servo motor
- rolling mill
- pressing device
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Classifications
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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
- B21B13/06—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
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
- B21B37/60—Roll-force control; Roll-gap control by control of a motor which drives an adjusting screw
Abstract
The invention discloses a servo asynchronous two-roller powder rolling mill, which comprises a rack, wherein a first roller and a second roller are arranged on the rack, the roller surfaces of the first roller and the second roller are oppositely arranged and are rotatably fixed on the rack through a rotating shaft, one axial ends of the first roller and the second roller are respectively connected with a universal coupling, the universal couplings are also connected with a first servo motor and a second servo motor, a pressure sensor is radially arranged on the rotating shaft of the first roller, a pressing device is radially arranged on the rotating shaft of the second roller, the pressing device is also connected with a third servo motor and is driven by the third servo motor to press the second roller down, the second roller is pushed to radially move towards the first roller, a constant-distance roller gap between the two rollers is realized, and the two servo motors independently control the two rollers, so that the accurate speed difference of the two rollers is realized. The invention adopts a servo control mode to realize the speed difference of the two rollers, thereby realizing the servo asynchronous rolling with constant roller gap and constant rolling force.
Description
Technical Field
The invention relates to the technical field of strip production, in particular to a servo asynchronous two-roller powder rolling machine.
Background
When metal or alloy powder is rolled into a plate strip, the average particle size of the powder is required to be uniformly distributed due to the characteristics of the powder such as chemistry, physics, process and the like, and the twisting force generated by the upper working roll and the lower working roll in the rolling process is required to act on the powder to realize the rolling forming of the strip. However, the difference of the rolling speed of some rolling mills cannot be adjusted, or the difference of the speed is unstable, so that the rolled strip does not meet the process requirements, such as uneven structure grains and the like. In addition, the size of the roll gap is also one of important factors, at present, the roll gap between the rolls is adjusted by manually pre-arranging the rolls by a rotary nut so as to roll the roll gap constantly, the manual adjustment has the defect that the longitudinal and transverse sizes of the strip are inconsistent, and the manual adjustment has large errors, so that the gap errors of mechanical manufacturing such as uneven powder and nuts cannot be timely adjusted on line, and only low-end products can be produced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the servo asynchronous two-roller powder rolling mill is provided, and the servo asynchronous rolling with constant roller gap and constant rolling force is realized by adopting a servo control mode to realize the speed difference of two rollers.
The technical scheme adopted by the invention is as follows: the automatic rolling machine comprises a rack, wherein a first roller and a second roller are arranged on the rack, the roller surfaces of the first roller and the second roller are oppositely arranged and rotatably fixed on the rack through rotating shafts, one axial ends of the first roller and the second roller are respectively connected with a universal coupling, the universal coupling is further connected with a first servo motor and a second servo motor, a pressure sensor is radially arranged on the rotating shaft of the first roller, a pressing device is radially arranged on the rotating shaft of the second roller, the pressing device is further connected with a third servo motor and is driven by the third servo motor to press the second roller down, the second roller is pushed to radially move towards the first roller, a constant-distance roller gap between the two rollers is realized, the two servo motors independently control the two rollers, and the accurate speed difference of the two rollers is realized.
Preferably, all be equipped with decelerator between universal joint and first servo motor and the second servo motor, decelerator includes driving gear and reduction gear, the driving gear input is connected with the servo motor output, driving gear and reduction gear meshing, the reduction gear output is connected with universal joint, decelerator makes two rolls of servo motor ability control more accurately, universal joint can transmit torque reliably, has great angular compensation ability, compact structure, and transmission efficiency is high.
Preferably, a displacement sensor is further arranged on the pressing device and used for monitoring the pressing stroke of the pressing device, so that position feedback is carried out on the roll gap, and the size of the roll gap is adjusted by a third servo motor.
Preferably, the bearings are sleeved on the rotating shafts at the two ends of the second roller, the connecting blocks are sleeved on the bearings, the top ends of the pressing devices are fixed to the connecting blocks, guide rails in the radial direction of the second roller are arranged on the rack, the connecting blocks are assembled in the guide rails and slide along the guide rails under the pushing of the pressing devices, the connecting blocks are convenient to assemble and disassemble, serve as connecting pieces between the rotating shafts of the rollers and the pressing devices, are convenient and safe to operate, and play a role in buffering the thrust of the pressing devices acting on the rollers.
Preferably, the number of the pressing devices is two, correspondingly, the number of the connecting blocks is two, the two pressing devices are respectively sleeved on the bearings at the two ends of the rotating shaft of the second roller, and correspondingly, the number of the third servo motors fixed with the connecting blocks is two, so that the rollers can move more stably when the second rollers are pushed.
Preferably, the number of the speed reducing devices is two, the centers of the driving gear and the speed reducing gear in each speed reducing device are located on the same horizontal line, and the driving gears and the speed reducing gears of the two speed reducing devices are horizontally staggered and arranged in parallel.
Preferably, the connecting block is provided with a counter bore, the top end of the pressing device is fixedly assembled in the counter bore, and the position of the counter bore close to the end face is chamfered, so that a circle of the periphery of the top end of the pressing device is contacted with the counter bore instead of the whole top end face is attached to the inside of the counter bore, the top end of the pressing device can be attached to the counter bore better, and deviation and looseness caused by uneven attachment between the top end of the pressing device and the counter bore are reduced.
The invention relates to a servo asynchronous two-roller powder rolling mill, which has the advantages that: the two rollers are separately controlled and driven by the servo motor and the universal coupling to form a speed difference, so that accurate asynchronous rolling and constant roll gap rolling are achieved, in order to ensure the consistency of the mechanical properties of a rolled and formed strip, the rollers are provided with the pressure sensor and the pressing device, and form an AGC closed loop system with the servo motor, so that the purpose of constant rolling force is achieved, the requirement of consistent strip density is met, and the rollers are provided with the displacement sensor to monitor the roll gap to realize real-time online closed loop control of the roll gap.
Drawings
Fig. 1 is a front view of the structure of the present invention.
FIG. 2 is a top view of the first and second rolls of the present invention.
FIG. 3 is a schematic view of the first roller and the second roller of the present invention.
The rolling mill comprises a mill frame 1, a mill frame 2, a first mill roll 3, a second mill roll 4, a universal coupling 5, a first servo motor 6, a second servo motor 7, a pressure sensor 8, a pressing device 9, a third servo motor 10, a speed reducing device 101, a driving gear 102, a speed reducing gear 11, a displacement sensor 12, a connecting block 13 and a counter bore.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, the present invention provides a servo asynchronous two-roller powder rolling mill, which comprises a frame 1, wherein a first roller 2 and a second roller 3 are arranged on the frame 1, the roller surfaces of the first roller 2 and the second roller 3 are oppositely arranged and rotatably fixed on the frame 1 through a rotating shaft, and the first roller 2 and the second roller 3 can move oppositely along the frame 1.
All be equipped with decelerator 10 between universal joint 4 and first servo motor 5 and the second servo motor 6, in this embodiment, decelerator 10 is the gear train, including driving gear 101 and reduction gear 102, the driving gear 101 input is connected with the servo motor output, driving gear 101 meshes with reduction gear 102, reduction gear 102 output is connected with universal joint 4, first servo motor 5 drives power transmission with second servo motor 6 and gives driving gear 101, driving gear 101 is rotatory to drive reduction gear 102, reduction gear 102 transmission power is for universal joint 4, universal joint 4 is connected to every decelerator 10 correspondence. The universal coupling 4 is safe and reliable, has enough strength and service life, and for the occasions with frequent load starting or working load change, the universal coupling 4 is provided with elastic elements with buffering and vibration-damping functions so as to protect the speed reducer 10 and the roller from being damaged or not, and can compensate or relieve additional loads among rotating shafts, bearings, couplings and other parts caused by relative displacement among rotating components.
In this embodiment, the number of the reduction gear 10 is two, that is, two sets of gear sets, the centers of the driving gear 101 and the reduction gear 102 in each set of gear set are located on the same horizontal line, and the two sets of gear sets are all horizontally arranged, staggered and arranged in parallel, so as to compress the space of the whole reduction gear 10 as much as possible.
The rotating shaft of the second roller 3 is radially provided with a pressing device 8, the pressing device 8 is also connected with a third servo motor 9, and the third servo motor 9 drives the second roller 3 to press downwards so as to push the second roller 3 to move towards the first roller 2 in the radial direction. The bearing is sleeved on the rotating shaft at the two ends of the second roller 3, the connecting block 12 extends out of the bearing, the top end of the pressing device 8 is fixed with the connecting block 12, the rack 1 is provided with a guide rail along the radial direction of the second roller 3, and the connecting block 12 is assembled in the guide rail and slides along the guide rail under the pushing of the pressing device 8, so that the second roller 3 can move horizontally to the first roller 2.
The number of the pressing devices 8 is two, the pressing devices are fixed on the connecting block 12, the pressing devices 8 are respectively corresponding to two ends of a rotating shaft of the second roller 3 and are axially arranged perpendicular to the rotating shaft of the second roller 3, the two pressing devices 8 simultaneously push two ends of the second roller 3, the second roller 3 can move to the first roller 2 straightly and in a non-offset mode, a roller gap is formed between the first roller 2 and the second roller 3, correspondingly, the connecting block 12 is also two, bearings which are respectively sleeved at two ends of the rotating shaft of the second roller 3 are respectively sleeved, and the third servo motors 9 which are fixed with the connecting block 12 are also correspondingly two, so that the connecting block 12 is respectively pushed to move forwards and retreat.
The pressing devices 8 are further provided with two displacement sensors 11, in this embodiment, the two displacement sensors 11 are respectively installed on the pressing devices 8 at two ends of the rotating shaft of the second roller 3, and are used for monitoring the pressing stroke of the pressing devices 8, for example, the chenshi KTM miniature pull rod type linear displacement sensor 11 is adopted.
As shown in fig. 2, a counter bore 13 is formed in the connecting block 12, the top end of the pressing device 8 is fixedly assembled in the counter bore 13, a chamfer is arranged in the counter bore 13, the top end of the pressing device 8 is installed in the counter bore 13, the whole end face of the top end cannot be attached to the counter bore 13, the end face of the top end is only circumferentially attached to the counter bore 13, and the design aims to avoid the situation that the whole end face is tightly attached to the counter bore 13 and cannot be completely attached to the connecting block, so that the pressing device 8 can loosen when pushing the connecting block 12, and the displacement of the second roller 3 is affected.
The working principle of the intelligent dynamic rolling mill is that a first servo motor 5 and a second servo motor 6 respectively drive a first roller 2 and a second roller 3 to rotate through a speed reducer 10 and a universal coupling 4, as shown in fig. 3, the first roller 2 and the second roller 3 keep rotating oppositely, the first roller 2 rotates and keeps not moving on a frame 1, a pressing device 8 pushes the second roller 3 to move towards the first roller 2, powder is pressed and formed from a roller gap between the first roller 2 and the second roller 3, a pressure sensor 7 on the first roller 2 detects the stress data condition of the first roller 2 and feeds the data back to a third servo motor 9 of the pressing device 8, the third servo motor 9 adjusts the forward or backward displacement of the pressing device 8 according to the pressure data and in cooperation with a displacement sensor 11 to realize the intelligent dynamic rolling mill with constant rolling force, wherein the data of the displacement sensor 11 is fed back to the third servo motor 9, and realizing on-line real-time AGC belt thickness closed-loop control.
The foregoing has described preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary, and various changes made within the scope of the independent claims of the present invention are within the scope of the present invention.
Claims (7)
1. Servo asynchronous two-roller powder rolling mill, characterized in that it comprises a frame (1), a first roller (2) and a second roller (3) are arranged on the frame (1), the first roller (2) and the second roller (3) are arranged oppositely and are rotatably fixed on the frame (1) through a rotating shaft, one axial ends of the first roller (2) and the second roller (3) are respectively connected with a universal coupling (4), the universal coupling (4) is also connected with a first servo motor (5) and a second servo motor (6), a pressure sensor (7) is arranged on the radial direction of the rotating shaft of the first roller (2), a pressing device (8) is arranged on the radial direction of the rotating shaft of the second roller (3), the pressing device (8) is also connected with a third servo motor (9) and is driven by the third servo motor (9) to press the second roller (3) downwards so as to push the second roller (3) to move towards the first roller (2) in the radial direction.
2. Servo asynchronous two-roller powder rolling mill according to claim 1, characterized in that: all be equipped with decelerator (10) between universal joint (4) and first servo motor (5) and second servo motor (6), decelerator (10) include driving gear (101) and reduction gear (102), driving gear (101) input and servo motor output are connected, driving gear (101) and reduction gear (102) meshing, reduction gear (102) output is connected with universal joint (4).
3. Servo asynchronous two-roller powder rolling mill according to claim 1, characterized in that: and the pressing device (8) is also provided with a displacement sensor (11) for monitoring the pressing stroke of the pressing device (8).
4. Servo asynchronous two-roller powder rolling mill according to claim 3, characterized in that: the rolling mill is characterized in that bearings are sleeved on rotating shafts at two ends of the second roller (3), connecting blocks (12) are sleeved on the bearings, the top end of the pressing device (8) is fixed with the connecting blocks (12), a guide rail along the radial direction of the second roller (3) is arranged on the rack (1), and the connecting blocks (12) are assembled in the guide rail and slide along the guide rail under the pushing of the pressing device (8).
5. Servo asynchronous two-roller powder rolling mill according to claim 4, characterized in that: the number of the pressing devices (8) is two, correspondingly, the number of the connecting blocks (12) is two, the pressing devices are respectively sleeved on bearings at two ends of a rotating shaft of the second roller (3), and correspondingly, the number of the third servo motors (9) fixed with the connecting blocks (12) is two.
6. Servo asynchronous two-roller powder rolling mill according to claim 2, characterized in that: the number of the speed reducing devices (10) is two, the centers of the driving gears (101) and the centers of the speed reducing gears (102) in each speed reducing device (10) are located on the same horizontal line, and the driving gears (101) and the speed reducing gears (102) of the two speed reducing devices (10) are horizontally staggered and arranged in parallel.
7. Servo asynchronous two-roller powder rolling mill according to claim 5, characterized in that: the connecting block (12) is provided with a counter bore (13), and the top end of the pressing device (8) is fixedly assembled in the counter bore (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910897351.XA CN111842491A (en) | 2019-09-23 | 2019-09-23 | Servo asynchronous two-roller powder rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910897351.XA CN111842491A (en) | 2019-09-23 | 2019-09-23 | Servo asynchronous two-roller powder rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111842491A true CN111842491A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910897351.XA Pending CN111842491A (en) | 2019-09-23 | 2019-09-23 | Servo asynchronous two-roller powder rolling mill |
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| Country | Link |
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| CN (1) | CN111842491A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113960175A (en) * | 2021-10-21 | 2022-01-21 | 格云特自动化科技（深圳）有限公司 | Material permeability detection device |
| WO2023243786A1 (en) * | 2022-06-13 | 2023-12-21 | 주식회사 솔룸신소재 | Asymmetrical rolling device |
| WO2023243787A1 (en) * | 2022-06-13 | 2023-12-21 | 주식회사 솔룸신소재 | Asymmetric rolling apparatus and cassette device |
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| GB1281968A (en) * | 1969-11-05 | 1972-07-19 | Gen Motors Corp | Apparatus for controlling the edges of flat-rolled products |
| US4041742A (en) * | 1976-01-15 | 1977-08-16 | Kelsey-Hayes Company | Apparatus and method for cold working metal powder |
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| CN201969729U (en) * | 2010-08-25 | 2011-09-14 | 一重集团大连设计研究院有限公司 | Novel vertical roller mill side pressing and balancing device |
| CN102310087A (en) * | 2011-08-26 | 2012-01-11 | 宁波中超机器有限公司 | Vertical roller mill |
| CN102601122A (en) * | 2012-03-13 | 2012-07-25 | 西安交通大学 | Alternating-current direct-drive servo device for main transmission and two-roller radial spacing adjustment |
| CN205008391U (en) * | 2015-08-19 | 2016-02-03 | 鞍钢集团工程技术有限公司 | Go up type of belt drive edger mill |
| CN106975664A (en) * | 2017-05-27 | 2017-07-25 | 辽宁科技大学 | A kind of micro- milling method of very thin variable-thickness strip |
| CN107716930A (en) * | 2016-08-12 | 2018-02-23 | 天津中信宝德环保科技有限公司 | A kind of metal-powder rolling device |
| CN109530440A (en) * | 2018-12-30 | 2019-03-29 | 衡阳市鑫诚和重型机械设备制造有限公司 | Asynchronous Asymmetric Rolling milling train layout system |
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2019
- 2019-09-23 CN CN201910897351.XA patent/CN111842491A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1281968A (en) * | 1969-11-05 | 1972-07-19 | Gen Motors Corp | Apparatus for controlling the edges of flat-rolled products |
| US4041742A (en) * | 1976-01-15 | 1977-08-16 | Kelsey-Hayes Company | Apparatus and method for cold working metal powder |
| CN1764508A (en) * | 2003-03-22 | 2006-04-26 | Sms迪马格股份公司 | Rolling mill, especially a swage rolling mill, for heated operation. |
| CN201969729U (en) * | 2010-08-25 | 2011-09-14 | 一重集团大连设计研究院有限公司 | Novel vertical roller mill side pressing and balancing device |
| CN102310087A (en) * | 2011-08-26 | 2012-01-11 | 宁波中超机器有限公司 | Vertical roller mill |
| CN102601122A (en) * | 2012-03-13 | 2012-07-25 | 西安交通大学 | Alternating-current direct-drive servo device for main transmission and two-roller radial spacing adjustment |
| CN205008391U (en) * | 2015-08-19 | 2016-02-03 | 鞍钢集团工程技术有限公司 | Go up type of belt drive edger mill |
| CN107716930A (en) * | 2016-08-12 | 2018-02-23 | 天津中信宝德环保科技有限公司 | A kind of metal-powder rolling device |
| CN106975664A (en) * | 2017-05-27 | 2017-07-25 | 辽宁科技大学 | A kind of micro- milling method of very thin variable-thickness strip |
| CN109530440A (en) * | 2018-12-30 | 2019-03-29 | 衡阳市鑫诚和重型机械设备制造有限公司 | Asynchronous Asymmetric Rolling milling train layout system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113960175A (en) * | 2021-10-21 | 2022-01-21 | 格云特自动化科技（深圳）有限公司 | Material permeability detection device |
| CN113960175B (en) * | 2021-10-21 | 2024-03-01 | 格云特自动化科技（深圳）有限公司 | Material permeability detection device |
| WO2023243786A1 (en) * | 2022-06-13 | 2023-12-21 | 주식회사 솔룸신소재 | Asymmetrical rolling device |
| WO2023243787A1 (en) * | 2022-06-13 | 2023-12-21 | 주식회사 솔룸신소재 | Asymmetric rolling apparatus and cassette device |
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Application publication date: 20201030 |