Roll replacement timing prediction system and roll replacement timing prediction method

Abstract

The object of the present invention is to provide a roll replacement timing prediction system and a roll replacement timing prediction method for roll press equipment that can predict an appropriate roll replacement timing. [Solution] The roll replacement timing prediction system of the present invention is a roll replacement timing prediction system for a roll press equipment and is characterized by comprising: a sensor that detects the distortion and damage state of the roll; a comparison calculation unit that determines an abnormality or an abnormality precursor of the roll based on the detected changes in the distortion and damage state of the roll; and a replacement timing calculation unit that predicts the roll replacement timing based on the abnormality or abnormality precursor of the roll.

Description

Technical Field

[0001] The present invention relates to a roll replacement timing prediction system and a roll replacement timing prediction method.

Background Art

[0002] Roll press equipment is used for compression processing of electrode materials for lithium ion secondary batteries and the like. The required thickness accuracy after compression processing of the material is strict, and further higher accuracy has been desired in recent years.

[0003] In Patent Document 1, in order to more accurately grasp the shape change of the work roll used in roll press equipment, a technique for grasping the roll deformation amount by dividing it into deformation due to temperature change of the roll and deformation due to load on the roll (paragraphs

[0008] ,

[0009] ) is disclosed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In roll press equipment, since the product quality may be affected by the shape change (such as wear) of the roll, it is necessary to replace the work roll in a timely manner. Also, economically, optimizing the replacement timing is important.

[0006] However, Patent Document 1 does not disclose the appropriate replacement timing of the roll and the like.

[0007] An object of the present invention is to provide a roll replacement timing prediction system and a roll replacement timing prediction method for roll press equipment that can predict an appropriate roll replacement timing.

Means for Solving the Problems

[0008] The roll replacement timing prediction system of the present invention is a roll replacement timing prediction system for a roll press equipment and is characterized by comprising: a sensor that detects the distortion and damage state of the roll; a comparison calculation unit that determines an abnormality or an abnormality precursor of the roll based on the detected changes in the distortion and damage state of the roll; and a replacement timing calculation unit that predicts the roll replacement timing based on the abnormality or abnormality precursor of the roll.

[0009] Furthermore, the roll replacement timing prediction method of the present invention is characterized in that, in a roll replacement timing prediction method for roll press equipment, the distortion and damage state of the roll is detected, an abnormality or sign of an abnormality is determined based on the detected change in the distortion and damage state of the roll, and the roll replacement timing is predicted based on the abnormality or sign of an abnormality of the roll. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a roll replacement timing prediction system and a roll replacement timing prediction method for roll press equipment that can predict an appropriate roll replacement timing. [Brief explanation of the drawing]

[0011] [Figure 1] This is a block diagram showing the configuration of the roll replacement timing prediction system in this embodiment. [Figure 2] This diagram shows a flowchart for predicting the roll replacement timing in this embodiment. [Figure 3] This is an example of a cross-sectional view of the rolls of the roll press equipment in this embodiment. [Figure 4] This is an example of a cross-sectional view of the rolls of the roll press equipment in this embodiment. [Figure 5] This is a front view of the rolls of the roll press equipment in this embodiment. [Modes for carrying out the invention]

[0012] The embodiments will be described below with reference to the drawings. Note that these embodiments are illustrative examples for explaining the present invention, and have been omitted and simplified as appropriate for clarity of explanation. The invention can also be implemented in various other forms. Unless otherwise specified, each component may be singular or plural. The positions, sizes, shapes, and ranges of the components shown in the drawings may not represent the actual positions, sizes, shapes, and ranges, in order to facilitate understanding of the invention. Therefore, the present invention is not necessarily limited to the positions, sizes, shapes, and ranges disclosed in the drawings. [Examples]

[0013] This embodiment describes the replacement of rolls in a roll press equipment used for compression processing of battery electrode materials, etc. However, this can also be applied to the replacement of rolls in roll press equipment used for compression processing of other materials.

[0014] Figure 1 is a block diagram showing the configuration of the roll replacement timing prediction system of this embodiment. The roll replacement timing prediction system mainly comprises at least one of a first sensor 1 and a second sensor 2, a DB3 (database), a comparison calculation unit 4, and a replacement timing calculation unit 5.

[0015] The first sensor 1 is a pressure sensor, strain gauge, vibration sensor, acceleration sensor, acoustic sensor, frequency meter, etc., and at least one is placed on the roll bearing. It senses (measures) at least one of the following: pressure, vibration, sound, and sound frequency applied to the roll shaft during pressing in the roll press equipment. This sensing makes it possible to detect slight distortion or damage to the roll. Slight distortion or damage to the roll can be detected accurately and directly from the roll bearing of the roll press equipment.

[0016] The second sensor 2 is a vibration sensor, an acceleration sensor, an acoustic sensor, a frequency meter, etc., and at least one of them is arranged near the roll. At least one of the sound during pressing of the roll press equipment, the frequency of the sound, etc. is sensed (measured). And, by this sensing, a slight distortion or damage state of the roll can be detected. When arranging near the roll, a position as close as possible is desirable as long as it does not contact the roll and the press material 12.

[0017] The measurement information of at least one of the first sensor 1 and the second sensor 2 is transmitted to the comparison operation unit 4.

[0018] In the DB3 (database), a threshold value for determining an abnormality or a sign of abnormality of the roll is set in advance. That is, a threshold value of at least one of pressure, vibration, sound, and the frequency of the sound or the roll deformation amount derived therefrom is set in advance and stored. The information of the threshold value of at least one of the pressure, vibration, sound, and the frequency of the sound or the roll deformation amount derived therefrom in the DB3 (database) is transmitted to the comparison operation unit 4. Note that the threshold value can be set by calculation or from actual performance data during normal times, etc.

[0019] In the comparison operation unit 4, an abnormality or a sign of abnormality of the roll is determined based on the detected change in the distortion and damage state of the roll. Specifically, an abnormality or a sign of abnormality of the roll is determined based on the information of at least one of the first sensor 1 and the second sensor 2 and / or the information of the threshold value of the roll deformation amount. These determination results are transmitted to the replacement timing calculation unit 5.

[0020] In the replacement timing calculation unit 5, an appropriate roll replacement timing is calculated from the information determined by the comparison operation unit 4.

[0021] As described above, the roll replacement timing prediction system of this embodiment includes a sensor (the first sensor 1 or the second sensor 2) that detects the distortion and damage state of the roll, and a comparison operation unit 4 that determines the abnormality or sign of abnormality of the roll based on the detected changes in the distortion and damage state of the roll, and a replacement timing operation unit 5 that predicts the roll replacement timing based on the abnormality or sign of abnormality of the roll. Therefore, it is possible to detect the sign or abnormality of roll wear at an early stage, predict the replacement timing, and improve the throughput of the production line.

[0022] In addition, it can be used to improve the efficiency of roll replacement in roll press equipment in many industries including dry electrode manufacturing. In particular, in a manufacturing process that requires compression work under high load, it is also expected to extend the life of the roll and reduce maintenance costs.

[0023] FIG. 2 is a diagram showing a flowchart of roll replacement timing prediction of this embodiment.

[0024] In step S1, at least one of the first sensor 1 and the second sensor 2 measures at least one of the pressure, vibration, sound, and sound frequency applied to the roll shaft during pressing of the roll press equipment.

[0025] In step S2, based on the detected changes in the distortion and damage state of the roll, the abnormality or sign of abnormality of the roll is determined. Specifically, at least one of the pressure, vibration, sound, and sound frequency applied to the roll shaft during pressing of the roll press equipment, or at least one piece of information such as the sound and sound frequency during pressing of the roll press equipment, is compared and calculated with the information on the preset threshold for determining the abnormality or sign of abnormality of the roll in the DB3 (database) to determine the presence or absence of roll abnormality (sign of abnormality). If there is no abnormality, the process returns to step S1.

[0026] If there is roll abnormality (sign of abnormality), in step S3, an appropriate roll replacement timing is predicted. By such a roll replacement timing prediction method, it is possible to predict an appropriate roll replacement timing.

[0027] As described above, the roll replacement timing prediction method of this embodiment detects the distortion and damage state of the roll, determines an abnormality or sign of an abnormality in the roll based on the detected changes in the distortion and damage state of the roll, and predicts the roll replacement timing based on the abnormality or sign of an abnormality in the roll, thereby making it possible to predict an appropriate roll replacement timing.

[0028] Figure 3 is an example of a cross-sectional view of the rolls of the roll press equipment in this embodiment. Figure 5 is a front view of the rolls of the roll press equipment in this embodiment. As shown in Figures 3 and 5, the press material 12, which is the electrode material for a battery, is compressed from above and below while the upper roll 10 and lower roll 11 are rotated. As the compression process continues, slight distortion or damage may occur on the roll surface. This slight distortion or damage is very important in pressing the electrode material for a battery. The upper roll shaft 18 is rotatably supported by a first upper roll bearing 14 at one end and a second upper roll bearing 15 at the other end. The lower roll shaft 19 is rotatably supported by a first lower roll bearing 16 at one end and a second lower roll bearing 17 at the other end.

[0029] In the example shown in Figure 3, the first sensor 1 is placed at the first upper roll bearing 14, which is one end of the upper roll 10, and at the first lower roll bearing 16, which is one end of the lower roll 11. By placing this first sensor 1, it is possible to measure at least one of the following: pressure, vibration, sound, and sound frequency applied to the roll shaft during pressing in the roll press equipment, and to detect slight distortion or damage to the rolls.

[0030] In Figure 3, the first sensor 1 is placed on the first upper roll bearing 14, which is one end of the upper roll 10, and the first lower roll bearing 16, which is one end of the lower roll 11. However, it is sufficient to place the sensor at at least one of the four locations: the first upper roll bearing 14 at one end of the upper roll 10, the second upper roll bearing 15 at the other end, the first lower roll bearing 16 at one end of the lower roll 11, and the second lower roll bearing 17 at the other end. Furthermore, detection accuracy can be expected to improve by placing the sensor at multiple locations (two locations on one end, upper and lower, and four locations on the other end).

[0031] Figure 4 shows an example of a cross-sectional view of the roll of the roll press equipment in this embodiment. The second sensor 2 is a vibration sensor, acceleration sensor, acoustic sensor, frequency meter, etc., and at least one is placed near the roll. It is capable of detecting slight distortion or damage to the roll and is positioned by a separate support mechanism so as not to interfere with the roll press. Therefore, it does not affect the roll press operation and does not interfere with maintenance work on the roll press equipment. It measures at least one of the following: the sound produced when the roll press equipment is pressing, the frequency of the sound, etc. This measurement makes it possible to detect slight distortion or damage to the roll. [Explanation of Symbols]

[0032] 1...First detection, 2…Second sensor, 3...DB, 4...Comparison calculation unit, 5...Replacement time calculation section, 10... Upper roll, 11... Lower roll, 12… Pressing materials, 14...First upper roll bearing, 15... Second upper roll bearing, 16...First lower roll bearing, 17...Second lower roll bearing, 18... Upper roll axis, 19... Lower roll axis.

Claims

1. In a roll replacement timing prediction system for roll press equipment, A sensor that detects the distortion and damage condition of the roll, A comparison calculation unit that determines an abnormality or an indication of an abnormality in the roll based on the detected changes in the distortion and damage state of the roll, A roll replacement timing prediction system characterized by comprising a replacement timing calculation unit that predicts the roll replacement timing based on an abnormality or abnormality indication of the roll.

2. In the roll replacement timing prediction system according to claim 1, The roll replacement timing prediction system is characterized in that at least one of a pressure sensor, strain gauge, vibration sensor, acceleration sensor, acoustic sensor, and frequency measuring instrument is placed on the roll bearing to measure at least one of the pressure, vibration, sound, and sound frequency applied to the roll shaft during pressing of the roll press equipment.

3. In the roll replacement timing prediction system according to claim 1, The roll replacement timing prediction system is characterized in that at least one of a vibration sensor, an acceleration sensor, an acoustic sensor, and a frequency measuring instrument is placed near the roll to measure at least one of the sound and sound frequency of the roll press equipment during pressing.

4. In the roll replacement timing prediction system according to claim 3, The roll replacement timing prediction system is characterized in that the sensor is positioned near the roll and does not come into contact with the roll or the press material.

5. In the roll replacement timing prediction system according to claim 1, The roll replacement timing prediction system is characterized in that the comparison calculation unit compares the detected distortion and damage state of the roll with at least one of the roll's pressure, vibration, sound, and sound frequency, or a threshold value of roll deformation derived therefrom, to determine an abnormality or an indication of an abnormality in the roll.

6. In a method for predicting the timing of roll replacement in roll press equipment, The roll's distortion and damage condition are detected, Based on the detected changes in the distortion and damage state of the roll, an abnormality or warning sign of an abnormality in the roll is determined. A method for predicting the timing of roll replacement, characterized by predicting the timing of roll replacement based on an abnormality or sign of an abnormality in the roll.

7. In the roll replacement timing prediction method according to claim 6, A method for predicting the timing of roll replacement, characterized in that the distortion and damage state of the roll is detected by measuring at least one of the pressure, vibration, sound, and sound frequency applied to the roll shaft during pressing of the roll press equipment.

8. In the roll replacement timing prediction method according to claim 6, The method for predicting the timing of roll replacement is characterized by detecting the distortion and damage state of the roll by measuring at least one of the sound and sound frequency of the roll press equipment during pressing.

9. In the roll replacement timing prediction method according to claim 6, A method for predicting the timing of roll replacement, characterized in that the determination of abnormality or signs of abnormality of the roll is made by comparing the detected distortion and damage state of the roll with at least one of the roll's pressure, vibration, sound, and sound frequency, or a threshold value of roll deformation derived therefrom, and determining whether the roll is abnormal or has signs of abnormality.

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