CN115090693A - Method for synchronously adjusting upper and lower rollers of roller press - Google Patents
Method for synchronously adjusting upper and lower rollers of roller press Download PDFInfo
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- CN115090693A CN115090693A CN202210683300.9A CN202210683300A CN115090693A CN 115090693 A CN115090693 A CN 115090693A CN 202210683300 A CN202210683300 A CN 202210683300A CN 115090693 A CN115090693 A CN 115090693A
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- 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
- B21B37/46—Roll speed or drive motor control
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- 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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
A synchronous adjusting method for upper and lower rollers of a roller press comprises the following steps: s1) line speed follows: the control system controls the main roller motor to rotate constantly at a preset rotating speed; the master roll encoder acquires the rotating speed of a master roll motor and transmits the rotating speed to the slave roll communication module, and the slave roll controller controls the slave roll motor to rotate at the rotating speed which is basically equal to the rotating speed of the master roll motor; s2) load adjustment: the main roll current detection module detects a real-time main current value of the main roll frequency converter, the slave roll current detection module detects a real-time slave current value of the slave roll frequency converter, and the slave roll control module controls the current of the slave roll frequency converter under the condition that the absolute value of the difference of the real-time slave current value subtracted from the real-time main current value approaches to 0, so as to finely adjust the rotating speed of the slave roll motor. The invention not only reduces the roller jamming, the encoder stall alarm or the motor overload alarm, but also ensures the quality of the product after the roller is rolled, and avoids the rubbing damage of the upper roller and the lower roller to the pole piece asynchronously.
Description
Technical Field
The invention relates to the technical field of synchronous adjustment of rollers, in particular to a synchronous adjustment method for upper and lower rollers of a roller press.
Background
The existing lithium battery rolling machine generally comprises an upper roller and a lower roller, and a pressed lithium battery pole piece passes through the upper roller and the lower roller to compact an active substance on the pole piece. In order to ensure that the upper roll and the lower roll rotate synchronously, an encoder is generally respectively arranged on the upper roll and the lower roll and used for recording the linear speed of the upper roll or the lower roll so as to control the linear speeds of the upper roll and the lower roll to be basically equal.
However, the existing roller synchronous adjustment and control technology still has the problems that the lithium battery roller press can often have roller jamming, encoder stall alarm or motor overload alarm under the working conditions of low speed and high pressure, so that the applicant proposes a synchronous adjustment method for the upper and lower rollers of the roller press to solve the problems.
Disclosure of Invention
The invention aims to solve the problems that the existing roller synchronous regulation and control technology still has the problems that a lithium battery roller press can often have roller jamming, encoder stall alarm or motor overload alarm and the like under the working conditions of low speed and high pressure, and provides a synchronous regulation method for upper and lower rollers of the roller press.
In order to achieve the purpose, the invention adopts the following technical scheme:
the method is suitable for being used on a rolling machine, wherein the rolling machine comprises a lower roller and an upper roller, the lower roller is a driving roller, and the upper roller is a driven roller; the lower roller is provided with a main roller motor and a main roller frequency converter with a main roller controller, the main roller controller at least comprises a main roller control module, a main roller encoder, a main roller current detection module and a main roller communication module, the upper roller is provided with a slave roller motor and a slave roller frequency converter with a slave roller controller, and the slave roller controller comprises a slave roller control module, a slave roller encoder, a slave roller current detection module and a slave roller communication module; the main roller communication module is in communication connection with the slave roller communication module; the adjusting method comprises the following steps:
s1) line speed follows: a control system of the roller press gives a speed signal preset by a main roller controller, and the main roller controller controls a main roller motor to rotate constantly at a preset rotating speed; the master roll encoder acquires the rotating speed data of the master roll motor, transmits the rotating speed data to the master roll control module in a pulse signal mode, and transmits the rotating speed data to the slave roll communication module through the master roll communication module; the whole adjusting process is a process that the linear speed of the slave roll motor follows the linear speed of the master roll motor.
S2) load adjustment: on the basis of linear velocity following, the roller press carries out load adjustment, the main roller current detection module detects the real-time main roller current value of the main roller motor, the slave roller current detection module detects the real-time slave roller current value of the slave roller motor, the real-time main roller current value is transmitted to the main roller control module, the real-time main roller current value is transmitted to the slave roller control module through the main roller communication module and the slave roller communication module, and the slave roller control module controls the current of the slave roller frequency converter through the condition that the absolute value of the difference of the real-time main roller current value minus the real-time slave roller current value approaches to 0, so that the rotating speed of the slave roller motor is further finely adjusted.
As an improvement of the invention, the master roll frequency converter and the slave roll frequency converter are both AC-DC-AC frequency converters.
As an improvement of the invention, the slave roll encoders are all incremental encoders, the output pulse signals of the slave roll encoders are input to the slave roll control module, and the pulse signals of the slave roll control module are counted by a high-speed counter of the slave roll control module to obtain the rotating speed measurement result of the slave roll motor.
As an improvement to the present invention, the incremental encoder outputs at least two-phase pulse signals of A and B.
As an improvement of the present invention, the method further comprises step S3, wherein the method is tested by changing the data of the thickness, the preset rolling thickness, the rolling force and the roll radius of the active material on the lithium battery pole piece, and the adjusting method is monitored by a professional in real time during the test, and is judged by the real-time monitoring result, and is processed by the judgment result, wherein the real-time monitoring result shows that the designed lithium battery rolling machine is not adjusted correctly if no alarm condition occurs, the real-time monitoring result shows that the designed lithium battery rolling machine is adjusted incorrectly if the alarm condition occurs, and the professional records the test data if the judgment result shows that the adjustment is correct, the professional checks the alarm condition if the judgment result shows that the adjustment is incorrect, and judges the alarm source by checking, and performs corresponding adjustment by the alarm source, wherein the alarm sources include roll stuck, encoder stalls, motor overload.
As an improvement of the invention, test data need to be recorded by professional personnel during testing, wherein the professional personnel needs to record the test data through real-time monitoring when the test data are recorded, the professional personnel regularly records the test data if the real-time monitoring result shows that the adjustment is correct, the recording period is 3 min/time, the professional personnel regularly records the test data if the real-time monitoring result shows that the adjustment is wrong, the test data when the alarm condition occurs are recorded, the professional personnel needs to test the adjusted lithium battery roller press again after the corresponding adjustment is carried out for one time, the test result process is monitored in real time, the judgment and the processing are carried out through the real-time monitoring result until the judgment result shows that the adjustment is correct, and the alarm condition is checked.
As an improvement of the invention, the method also comprises S4, a professional establishes an adjusting model and trains the established adjusting model, wherein the current data flowing through the main roller frequency converter and the auxiliary roller frequency converter are changed during training, the adjusting result is judged, the adjusting precision of the model is calculated according to the judging result, the professional judges the adjusting precision according to the calculated precision, the adjusting method is applied if the adjusting method is judged to be mature according to the judging result, the professional correspondingly adjusts the adjusting method according to the alarm source if the adjusting precision is more than or equal to 96.5 percent, the adjusted model data is cleared after the adjusting is finished, and the model after the data is cleared continues to train the model after the data is cleared, and calculating the adjusting precision of the model, judging through the calculated precision data, and detecting and processing the judgment result.
Compared with the prior art, the invention has the beneficial effects that:
1. by adopting real-time current and adjusting the rotating speed of the slave roller motor, the linear speed of the slave roller motor always follows the linear speed of the master roller motor, so that roller jamming, encoder stall alarm or motor overload alarm is reduced.
2. By providing the adjusting method, the precision rate of the rolling machine for pressing the thickness of the lithium battery pole piece is improved.
Drawings
FIG. 1 is a first schematic flow chart of the method for synchronously adjusting the upper and lower rolls of a roll press according to the present invention;
FIG. 2 is a second flow chart of the upper and lower roll synchronous adjustment method of the roll squeezer;
fig. 3 is a schematic structural diagram of the upper and lower roll synchronous adjustment method of the roll squeezer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Referring to fig. 1 and 3, fig. 1 and 3 disclose a first embodiment of a method for synchronously adjusting upper and lower rolls of a rolling machine, which is suitable for being used on a rolling machine comprising a lower roll 1 and an upper roll 2, wherein the lower roll 2 is a driving roll and the upper roll 1 is a driven roll; the lower roll 2 is provided with a main roll motor 11 and a main roll frequency converter 12 with a main roll controller 13, the main roll controller 13 at least comprises a main roll control module 131, a main roll encoder 132, a main roll current detection module 133 and a main roll communication module 134, the upper roll 2 is provided with a slave roll motor 21 and a slave roll frequency converter 22 with a slave roll controller 23, and the slave roll controller 23 comprises a slave roll control module 231, a slave roll encoder 232, a slave roll current detection module 233 and a slave roll communication module 234; the master roll communication module 134 is in communication with the slave roll communication module 234; the adjusting method comprises the following steps:
s1) line speed follows: a control system (not shown, the control system is formed by a PLC and a peripheral circuit thereof in the invention, and is mainly used for opening or closing the roller press and giving a speed signal preset by the main roller controller) of the roller press is provided with a speed signal preset by the main roller controller 13, and the main roller controller 13 controls the main roller motor 11 to rotate at a preset rotating speed; the master roll encoder 132 acquires the rotating speed data of the master roll motor 11, transmits the rotating speed data to the master roll control module 13 in a pulse signal mode, transmits the rotating speed data to the slave roll communication module 234 through the master roll communication module 134, and the slave roll controller 23 controls the rotating speed of the slave roll motor 21 according to the speed of the master roll controller 13 so that the rotating speed of the slave roll motor 21 is basically equal to the rotating speed of the master roll motor 11; the whole adjusting process is a process that the linear speed of the slave roll motor follows the linear speed of the master roll motor.
S2) load adjustment: on the basis of linear velocity following, the rolling machine carries out load adjustment, the main roll current detection module 133 detects a real-time main roll current value of the main roll motor 12, the slave roll current detection module 233 detects a real-time slave roll current value of the slave roll motor 22, the real-time main roll current value is transmitted to the main roll control module 13, the real-time main roll current value is transmitted to the slave roll control module 231 through the main roll communication module 134 and the slave roll communication module 234, the communication baud rate can adopt 500K, the slave roll control module 231 controls the current of the slave roll motor 22 through the condition that the absolute value of the difference of the real-time main roll current value minus the real-time slave roll current value approaches to 0, the rotating speed of the slave roll motor 21 is further finely adjusted, and the fine adjustment range is 0-2% of the constant rotating speed of the main roll motor 11.
Specifically, when the difference between the real-time master roll current value and the real-time slave roll current value is greater than 0, it indicates that the rotation speed of the slave roll motor 21 is lower than that of the master roll motor 11, and the slave roll motor 21 needs to be adjusted to be higher, otherwise, the slave roll motor is adjusted to be lower.
The invention adopts real-time current and adjusts the speed of the slave roll motor, so that the load of the upper roll is infinitely close to the load of the lower roll, and the loads of the two rolls are equally divided. Not only reduces the roller jamming, the encoder stall alarm or the motor overload alarm, but also ensures the quality of the product after the roller is rolled, and avoids the rubbing damage of the upper roller and the lower roller to the pole piece asynchronously.
Preferably, the master roll frequency converter and the slave roll frequency converter are both AC-DC-AC frequency converters.
Preferably, the slave roll encoders are all incremental encoders, output pulse signals of the slave roll encoders are input to the slave roll control module, and the pulse signals of the slave roll control module are counted by a high-speed counter of the slave roll control module to obtain the rotating speed measurement result of the slave roll motor.
According to the invention, real-time current is adopted, and the rotating speed of the slave roll motor 12 is adjusted to adapt to the speed of the master roll motor 11, so that the purposes of reducing roll jamming, encoder stall alarm or motor overload alarm are achieved; meanwhile, the precision rate of the roller press for pressing the thickness of the lithium battery pole piece can be improved.
The preset speed signals are parameters of the lithium battery pole piece of a professional and parameters of the rolling machine, are obtained after tests, and are input into the control system in advance to serve as the preset target rotating speed of the main roller.
Preferably, the master roll frequency converter 12 and the slave roll frequency converter 22 are both AC-DC-AC frequency converters.
Preferably, the master roll encoder 132 and the slave roll encoder 232 are both incremental encoders, an output pulse signal of the master roll encoder 132 is directly input to the master roll control module 133, and a high-speed counter of the master roll control module 133 is used for counting pulse signals of the master roll encoder 132 to obtain a measurement result of the master roll 1; the output pulse signal of the slave roll encoder 232 is directly input to the slave roll control module 233, and the pulse signal thereof is counted by the high-speed counter of the slave roll control module 233 to obtain the measurement result of the slave roll 2. In this embodiment, the incremental encoder outputs at least two-phase pulse signals of a and B.
Referring to fig. 2 and 3, fig. 2 and 3 disclose a second embodiment of a method for synchronously adjusting upper and lower rolls of a rolling press, the embodiment shown in fig. 2 and 3 has the same general structure as the embodiment shown in fig. 1 and 3, except that the embodiment further comprises a step S3, the method is tested, wherein the adjusting method is tested by changing the data of the thickness, the preset rolling thickness, the rolling force and the roll radius of the active material on the lithium battery pole piece 3 during the test, the professional carries out real-time monitoring during the test, judges through the real-time monitoring result, and processes through the judgment result, wherein the real-time monitoring result shows that the designed lithium battery rolling press is judged to be adjusted correctly if no alarm occurs, and the real-time monitoring result shows that the designed lithium battery rolling press is judged to be adjusted incorrectly if the alarm occurs, and if the judgment result is that the adjustment is correct, the professional records the test data, if the judgment result is that the adjustment is wrong, the professional checks the alarm condition, judges the alarm source through the check, and correspondingly adjusts the alarm source, wherein the alarm source comprises roll jamming, encoder stall and motor overload.
Specifically, the method is tested, wherein the adjusting method is tested by changing the data of the thickness, the preset rolling thickness, the rolling force and the roll radius of the active material on the lithium battery pole piece 3 during the test, the real-time monitoring is carried out by professionals during the test, the judgment is carried out according to the real-time monitoring result, the judgment is carried out according to the judgment result, the real-time monitoring result shows that the designed lithium battery rolling machine is not regulated correctly if no alarm condition occurs, the judgment is carried out according to the real-time monitoring result shows that the designed lithium battery rolling machine is regulated incorrectly if the alarm condition occurs, the test data is recorded by the professionals if the judgment result is regulated correctly, the professional checks the alarm condition if the judgment result is regulated incorrectly, the alarm source is judged by the checks, and the corresponding adjustment is carried out according to the alarm source, the alarm sources comprise roll jamming, encoder stalling and motor overload, test data need to be recorded by a professional during testing, test data need to be recorded by the professional during recording of the test data through real-time monitoring, the test data need to be recorded regularly by the professional when the real-time monitoring result shows that the adjustment is correct, the recording period is 3 min/time, the test data need to be recorded regularly by the professional when the real-time monitoring result shows that the adjustment is wrong, the test data when the alarm condition occurs are recorded, the adjusted lithium battery roll squeezer needs to be tested again by the professional after one-time corresponding adjustment, the test result process is monitored in real time, judgment and processing are carried out through the real-time monitoring result until the judgment result shows that the adjustment is correct, and the alarm condition is checked.
Preferably, the test data are recorded by professional personnel during the test, wherein the results are recorded by the professional personnel through real-time monitoring when the test data are recorded, the professional personnel regularly record the test data when the real-time monitoring results show that the adjustment is correct, the recording period is 3 min/time, the professional personnel regularly record the test data when the real-time monitoring results show that the adjustment is wrong, the test data when the alarm condition occurs are recorded, the professional personnel need to test the adjusted lithium battery roller press again after the corresponding adjustment is carried out for one time, the test result process is monitored in real time, the judgment and the processing are carried out through the real-time monitoring results, and the alarm condition is checked until the judgment result is that the adjustment is correct.
Preferably, the method further comprises step S4, a professional establishes an adjustment model, and trains the established adjustment model, wherein during training, current data flowing through the master roll frequency converter and the slave roll frequency converter are changed, the adjustment result is judged, the adjustment precision of the model is calculated according to the judgment result, the professional judges the adjustment precision through the calculated precision, the adjustment method is applied if the adjustment result is processed, the calculated precision is greater than or equal to 96.5%, the model is determined to be mature, the calculated precision is less than 96.5%, the model is determined to be immature, the adjustment method is applied if the adjustment method is determined to be mature, the professional performs corresponding adjustment through an alarm source if the adjustment method is determined to be immature, the adjusted model data is reset after completion, meanwhile, model training is continued after data resetting, and the adjustment precision of the model is calculated, and judging through the calculated precision rate data, and checking and processing according to a judgment result.
The synchronous adjustment method of the upper and lower rollers of the roller presses in the first embodiment, the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment is tested, and the following results are obtained:
compared with the prior art, the method for synchronously adjusting the upper and lower rollers of the roller press in the first embodiment and the second embodiment has the advantage that the precision rate of the roller press is remarkably improved, and the second embodiment is the best embodiment.
The conventional method of the present invention is a method in which the roll press is used without the master roll communication module 134 and the slave roll communication module 234, and only the linear velocity adjustment of S1 is performed.
The accuracy rate in the invention refers to the qualification rate after comparing the average thickness value of the pressed lithium battery pole piece with the standard value.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (7)
1. The upper and lower roller synchronous adjusting method of the roller press is characterized by being suitable for the roller press, wherein the roller press comprises a lower roller and an upper roller, the lower roller is a driving roller, and the upper roller is a driven roller; the lower roller is provided with a main roller motor and a main roller frequency converter with a main roller controller, the main roller controller at least comprises a main roller control module, a main roller encoder, a main roller current detection module and a main roller communication module, the upper roller is provided with a slave roller motor and a slave roller frequency converter with a slave roller controller, and the slave roller controller comprises a slave roller control module, a slave roller encoder, a slave roller current detection module and a slave roller communication module; the main roller communication module is in communication connection with the slave roller communication module; the adjusting method comprises the following steps:
s1) line speed follows: a control system of the roller press gives a speed signal preset by a main roller controller, and the main roller controller controls a main roller motor to rotate constantly at a preset rotating speed; the master roll encoder acquires the rotating speed data of the master roll motor, transmits the rotating speed data to the master roll control module in a pulse signal mode, and transmits the rotating speed data to the slave roll communication module through the master roll communication module; the whole adjusting process is a process that the linear speed of the slave roller motor follows the linear speed of the master roller motor;
s2) load adjustment: on the basis of linear velocity following, the roller press carries out load adjustment, the main roller current detection module detects the real-time main roller current value of the main roller motor, the slave roller current detection module detects the real-time slave roller current value of the slave roller motor, the real-time main roller current value is transmitted to the main roller control module, the real-time main roller current value is transmitted to the slave roller control module through the main roller communication module and the slave roller communication module, and the slave roller control module controls the current of the slave roller frequency converter through the condition that the absolute value of the difference of the real-time main roller current value minus the real-time slave roller current value approaches to 0, so that the rotating speed of the slave roller motor is further finely adjusted.
2. The method for synchronously adjusting the upper and lower rolls of a roll press according to claim 1, wherein the master roll frequency converter and the slave roll frequency converter are both AC-DC-AC frequency converters.
3. The method for synchronously adjusting the upper and lower rolls of a roll press according to claim 1, wherein the slave roll encoders are each an incremental type encoder, an output pulse signal of the slave roll encoder is inputted to the slave roll control module, and the pulse signal is counted by a high-speed counter of the slave roll control module to obtain a result of measuring the rotation speed of the slave roll motor.
4. The method of synchronously adjusting upper and lower rolls of a roll press according to claim 3, wherein said incremental encoder outputs at least two phase pulse signals of A and B.
5. The method for synchronously adjusting the upper and lower rolls of a roll squeezer according to claim 1, further comprising step S3, wherein the method is tested by changing the thickness of the active material on the lithium battery electrode plate, the preset rolling thickness, the rolling force and the roll radius, and the adjusting method is monitored in real time by a professional during the test, and is judged by the real-time monitoring result, and is processed by the judgment result, wherein the real-time monitoring result shows that the designed lithium battery roll squeezer is judged to be correctly adjusted if no alarm condition occurs, the real-time monitoring result shows that the designed lithium battery roll squeezer is judged to be incorrectly adjusted if the alarm condition occurs, the professional records the test data if the judgment result is correctly adjusted, and the professional checks the alarm condition if the judgment result is incorrectly adjusted, and judging the source of the alarm through inspection, and correspondingly adjusting the source of the alarm, wherein the source of the alarm comprises roll jamming, encoder stalling and motor overload.
6. The method for synchronously adjusting upper and lower rolls of a roll press according to claim 5, wherein test data is recorded by a professional during a test, wherein, when the test data is recorded, the professional personnel needs to record the result through real-time monitoring, and when the real-time monitoring result shows that the adjustment is correct, the professional personnel regularly records the test data, the recording period is 3 min/time, the real-time monitoring result shows that the adjustment error is recorded regularly by professional personnel, meanwhile, test data when an alarm condition occurs are recorded, and after one-time corresponding adjustment, a professional needs to test the adjusted lithium battery roller press again, and the test result process is monitored in real time, and judging and processing the real-time monitoring result until the judgment result is that the debugging is correct and the alarm condition is stopped to be checked.
7. The method for synchronously adjusting the upper and lower rolls of a rolling press as claimed in claim 1, further comprising step S4, wherein a professional establishes an adjustment model and trains the established adjustment model, wherein the training is performed by changing current data flowing through the master roll frequency converter and the slave roll frequency converter, and judging the adjustment result, calculating the adjustment accuracy of the model according to the judgment result, the professional judges the adjustment accuracy according to the calculated accuracy, and processes the adjustment result according to the judgment result, wherein the calculated accuracy is greater than or equal to 96.5% and is determined as mature, the calculated accuracy is less than 96.5% and is determined as immature, the adjustment method is applied if mature, the professional adjusts the adjustment method correspondingly through an alarm source, and the adjusted model data is cleared after completion, and meanwhile, model training is continuously carried out on the model after the data are cleared, the adjusting precision rate of the model is calculated, judgment is carried out according to the calculated precision rate data, and the judgment result is detected and processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210683300.9A CN115090693A (en) | 2022-06-17 | 2022-06-17 | Method for synchronously adjusting upper and lower rollers of roller press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210683300.9A CN115090693A (en) | 2022-06-17 | 2022-06-17 | Method for synchronously adjusting upper and lower rollers of roller press |
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| Publication Number | Publication Date |
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| CN115090693A true CN115090693A (en) | 2022-09-23 |
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|---|---|---|---|
| CN202210683300.9A Pending CN115090693A (en) | 2022-06-17 | 2022-06-17 | Method for synchronously adjusting upper and lower rollers of roller press |
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| CN (1) | CN115090693A (en) |
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- 2022-06-17 CN CN202210683300.9A patent/CN115090693A/en active Pending
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