Tail detection device, roll changing apparatus and method

Abstract

The application discloses a tail material detection device, a roll changing device and a method, and relates to the technical field of lithium battery processing. The tail material detection device comprises a detection assembly, a swing mechanism and a compression roller. The compression roller is pivotally connected to the swing mechanism. The swing mechanism is used for driving the compression roller to swing, so that the compression roller tightly contacts the material roll on the roll. The detection assembly is used for acquiring real-time data of the relative position change between the compression roller and the roll, and outputting the excess length information of the material roll according to the real-time data. The tail material detection device effectively improves the tail material detection precision, reduces the tail material waste, and reduces the cost. Moreover, the detection assembly does not directly contact the material roll, and will not scratch the material roll.

Description

Technical Field

[0001] This application relates to the field of lithium battery processing technology, and in particular to a tail material detection device, a roll changing equipment and method. Background Technology

[0002] Coating machines are important pieces of equipment in battery production, used to coat foil materials to form battery electrodes.

[0003] The working process of a coating machine: After the foil is unwound by the unwinding mechanism, it enters the coating mechanism for coating. After being dried by the drying system, it is wound up by the rewinding mechanism. During use, the foil rolls need to be changed frequently as material consumption increases, and the time or action of these changes affects material consumption. Currently, ultrasonic testing is commonly used to detect roll changeover times. Specifically, ultrasonic waves are used to directly inspect the surface of the roll. However, research has shown that ultrasonic detectors are easily affected by temperature and other factors, resulting in an error of 2mm in diameter (for foil thicknesses of 4μm-20μm, this error can lead to the waste of over 100m of foil material), increasing production costs. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a tailings detection device, a roll changing device and a method to solve the technical problem that the existing tailings detection methods have errors, which leads to increased production costs.

[0005] To achieve the above-mentioned technical objectives, this application provides a tailings detection device, including a detection component, a swing mechanism, and a pressure roller;

[0006] The pressure roller is pivotally connected to the swing mechanism;

[0007] The swing mechanism is used to drive the pressure roller to swing so that the pressure roller is in close contact with the material roll on the drum;

[0008] The detection component is used to acquire real-time data on the relative position change between the pressure roller and the roll, and output the remaining length information of the roll based on the real-time data.

[0009] Furthermore, the swing mechanism includes a swing frame and a drive mechanism;

[0010] The pressure roller is pivotally connected to the swing frame;

[0011] The drive mechanism is connected to the swing frame and is used to drive the swing frame to swing so that the pressure roller is in close contact with the material roll on the drum.

[0012] Furthermore, the detection component includes a data acquisition module and a processing module connected to the data acquisition module;

[0013] The acquisition module is used to acquire the real-time data and feed the real-time data back to the processing module;

[0014] The processing module outputs the remaining length information of the material roll based on the real-time data using a preset algorithm formula.

[0015] Furthermore, the real-time data includes angle data, wherein the plane containing the rotation center line of the swing frame and the plane containing the rotation center line of the pressure roller forms a first plane, the plane containing the rotation center line of the swing frame and the plane containing the rotation center line of the drum forms a second plane, and the angle data is the angle value between the first plane and the second plane;

[0016] The acquisition module is an angle sensor, which is installed on the swing frame or the drive mechanism to acquire the angle data and feed the angle data back to the processing module.

[0017] Furthermore, the preset algorithm formula includes a first algorithm formula:

[0018]

[0019]

[0020] Where D is the remaining roll diameter, D0 is the outer diameter of the drum, T is the strip thickness of the roll, L is the remaining length of the roll, D1 is the diameter of the pressure roller, θ is the angle data, and A is the distance between the rotation center line of the swing frame and the rotation center line of the drum.

[0021] Furthermore, the real-time data includes relative distance data, wherein the relative distance data is the change in distance between the rotation center line of the pressure roller and the rotation center line of the drum;

[0022] The acquisition module is a displacement sensor, which is installed on the swing frame and is used to acquire the relative distance data;

[0023] The displacement sensor is a contact type displacement sensor, and its contact end is in contact with the outer surface of the drum.

[0024] Furthermore, the preset algorithm formula includes a second algorithm formula:

[0025] H = H0 - H1 f1

[0026]

[0027] Where H is the remaining single-side thickness of the roll, H0 is the initial single-side thickness of the roll, H1 is the relative distance data, L is the remaining length information of the roll, D0 is the outer diameter of the roll, and T is the strip thickness of the roll.

[0028] Furthermore, the real-time data includes angle data and relative distance data, wherein the plane containing the rotation center line of the swing frame and the plane containing the rotation center line of the pressure roller forms a first plane, the plane containing the rotation center line of the swing frame and the plane containing the rotation center line of the drum forms a second plane, the angle data is the angle value between the first plane and the second plane, and the relative distance data is the distance change value between the rotation center line of the pressure roller and the rotation center line of the drum;

[0029] The acquisition module includes an angle sensor and a displacement sensor;

[0030] The angle sensor is connected to the rotating shaft of the pressure roller or to the output shaft of the drive mechanism to collect the angle data;

[0031] The displacement sensor is mounted on the swing frame and is used to collect the relative distance data;

[0032] The displacement sensor is a contact type displacement sensor, and its contact end is in contact with the outer surface of the drum.

[0033] Furthermore, the preset algorithm formula includes a first algorithm formula, a second algorithm formula, and a third algorithm formula;

[0034] The first algorithm formula is:

[0035]

[0036]

[0037] Where D is the remaining roll diameter, D0 is the outer diameter of the drum, T is the strip thickness of the roll, L1 is the remaining length of the roll, D1 is the diameter of the pressure roller, θ is the angle data, and A is the distance between the rotation center line of the swing frame and the rotation center line of the drum.

[0038] The second algorithm formula is:

[0039] H = H0 - H1 f1

[0040]

[0041] Where H is the remaining single-sided thickness of the roll, H0 is the initial single-sided thickness of the roll, H1 is the relative distance data, L2 is the remaining length information of the roll, D0 is the outer diameter of the roll, and T is the strip thickness of the roll.

[0042] The formula for the third algorithm is:

[0043]

[0044] Where L0 is the remaining length of the coil.

[0045] This application also discloses a roll changing device, including a frame, a cutting device, and at least one of the aforementioned tail material detection devices;

[0046] The frame is provided with an unwinding station for placing the winding drum;

[0047] At least one of the tail material detection devices is installed on the frame to obtain the remaining length information of the roll located in the unwinding station;

[0048] The cutting device is mounted on the frame and is used to cut the roll located at the unwinding station.

[0049] Furthermore, it also includes turntables;

[0050] The turntable is mounted on the frame;

[0051] There are at least two reels, which are rotatably mounted on the turntable and arranged in a centrally symmetrical manner;

[0052] The turntable is equipped with a driver that drives the drum to rotate in a one-to-one manner;

[0053] The turntable is used to transport the roll loaded with material to the unwinding station by rotating itself, so as to realize the roll change;

[0054] There are at least two tail material detection devices, which are installed on the turntable and arranged in a centrally symmetrical manner;

[0055] At least two of the tail material detection devices are used one-to-one to obtain information on the remaining length of the material roll on the drum.

[0056] This application also discloses a roll changing method, applied to the aforementioned roll changing equipment, including the following steps:

[0057] The detection component acquires real-time data on the relative position change between the pressure roller and the roll, and outputs the remaining length information of the roll on the roll at the unwinding station based on the real-time data according to the preset algorithm formula, wherein the pressure roller is pressed against the roll on the roll at the unwinding station by the action of the swing mechanism.

[0058] When the cutting device determines that the remaining length of the material roll in the unwinding station reaches a first preset value, it moves to the preparation position, and when it determines that the remaining length of the material roll in the unwinding station reaches a second preset value, it cuts the material roll.

[0059] The turret rotates to exchange the fully loaded roll with the unwound roll in the unwinding station, thus achieving roll changing.

[0060] As can be seen from the above technical solutions, the tail material detection device designed in this application uses detection components to collect real-time data on the relative position changes between the pressure roller and the roll, and then determines the remaining length information of the material roll on the roll based on the real-time data using a preset algorithm formula. Through the coordinated action of the detection components and the oscillating mechanism, real-time data of the pressure roller is directly collected, resulting in a simple structure and fast data acquisition. Since the pressure roller is in real-time close contact with the material roll on the roll, as the strip material is continuously released, the single-sided thickness of the material roll changes continuously, and the relative position between the pressure roller and the roll also changes accordingly. Accurate data can be collected in real time, and the remaining length information of the material roll can be obtained through a preset algorithm formula, so as to accurately control the roll changing operation based on the remaining length information of the material roll. In summary, this design effectively improves the accuracy of tail material detection, reduces tail material waste, lowers costs, and the detection components do not directly contact the material roll, thus avoiding scratches on the material roll. Attached Figure Description

[0061] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0062] Figure 1 A perspective view of a tail material detection device provided in this application when the acquisition module is an angle sensor;

[0063] Figure 2 for Figure 1 Enlarged view of position A;

[0064] Figure 3 This is a side view of a tail material detection device provided in this application when the acquisition module is an angle sensor;

[0065] Figure 4 This is a first perspective view of a tailings detection device provided in this application when the acquisition module is a displacement sensor;

[0066] Figure 5 This is a second perspective view of a tail material detection device provided in this application when the acquisition module is a displacement sensor;

[0067] Figure 6 This is a schematic diagram of the drum of a tailings detection device provided in this application;

[0068] Figure 7 This is a schematic diagram showing the two rolls of a roll changing device provided in this application in a fully loaded state;

[0069] Figure 8This is a schematic diagram showing one of the two rolls of a roll changing device provided in this application in an empty state;

[0070] Figure 9 This is a flowchart of a tailings detection method provided in this application;

[0071] Figure 10 This is a flowchart illustrating step S2 of the tailings detection method provided in this application.

[0072] Figure 11 A flowchart of a roll-changing method provided in this application;

[0073] In the diagram: 1. Swing frame; 11. Swing shaft; 2. Roller; 3. Material roll; 4. Drive mechanism; 5. Pressure roller; 61. Angle sensor; 62. Displacement sensor; 100. Frame; 200. Cutting device; 300. Turntable; 301. Process pressure roller. Detailed Implementation

[0074] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0075] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0076] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0077] The applicant discovered through research that conventional ultrasonic testing methods have an error of 2mm in diameter. The length of the waste material corresponding to this 2mm error is greater than 100 meters. Assuming an average of 4 rolls of 6μm copper foil material per day, and assuming 22 days per month, the monthly waste material waste cost is 100*7*4*22 = 61,600 yuan. Assuming 300 days per year, the annual waste material waste cost is 100*7*4*300 = 840,000 yuan. The cost increase caused by this error is significant. To solve the above problem, this application provides a waste material detection device.

[0078] Please see Figure 1 as well as Figure 4 One embodiment of the tailings detection device provided in this application includes:

[0079] The detection component, the swing mechanism, and the pressure roller 5.

[0080] The pressure roller 5 is pivotally connected to the swing mechanism, which drives the pressure roller 5 to swing so that the pressure roller 5 is in close contact with the material roll 3 on the drum 2. The swing mechanism design may include a swing frame 1 and a drive mechanism 4; the pressure roller 5 is pivotally connected to the swing frame 1; the drive mechanism 4 is connected to the swing frame 1 and drives the swing frame 1 to swing so that the pressure roller 5 is in close contact with the material roll 3 on the drum 2.

[0081] The drive mechanism 4 can be a telescopic actuator or a rotary motor. Taking a telescopic actuator as an example, it can be an electric push rod, a telescopic cylinder, etc. One end of the actuator is rotatably connected to the other end of the swing frame 1. The telescopic movement drives the swing frame 1 to swing. There can be two drive mechanisms 4, symmetrically arranged on both sides of the swing frame 1, to drive the swing frame 1 to swing simultaneously. With this design, the swing control is more balanced, and the pressing force applied to the material roll 3 is more uniform. Taking a rotary motor as an example, its output shaft is connected to the swing frame 1, and it drives the swing frame 1 to swing by rotating itself. Those skilled in the art can make appropriate design changes based on this, without limitation.

[0082] The detection component is used to acquire real-time data on the relative position change between the pressure roller 5 and the drum 2, and outputs the remaining length information of the material roll 3 on the drum 2 based on the real-time data. The real-time data includes angle data and / or relative distance data.

[0083] The detection component design includes a data acquisition module and a processing module that communicates with the acquisition module. The acquisition module collects real-time data from the pressure roller 5 and feeds it back to the processing module. The processing module outputs the remaining length information of the material roll 3 on the drum 2 based on the real-time data and a preset algorithm formula. The detection accuracy of the acquisition module is required to be ≥0.01μm, with no restrictions. The processing module can be a PLC, microprocessor module, intelligent mobile terminal, etc., which can be integrated with the acquisition module or used as a remote terminal. Taking a remote terminal as an example, the acquisition module is then connected to a communicator for data transmission, with no restrictions.

[0084] By coordinating the detection components and the oscillating mechanism, real-time data on the relative positional changes between the pressure roller 5 and the roll 2 are directly detected. The structure is simple and data acquisition is fast. Since the pressure roller 5 is in constant contact with the roll 3 on the roll 2, as the strip material is continuously released from the roll 3, the thickness of one side of the roll 3 changes accordingly. The relative position between the pressure roller 5 and the roll 2 also changes accordingly, allowing for real-time and accurate data acquisition. The remaining length information of the roll 3 is then obtained through a preset algorithm formula, enabling accurate control of the roll-changing operation based on this information. In summary, this design effectively improves the accuracy of tail material detection, reduces tail material waste, lowers costs, and prevents scratches on the roll 3 because the detection components do not directly contact it.

[0085] The above is Embodiment 1 of a tail material detection device, rewinding equipment, and method provided in this application. The following is Embodiment 2 of a tail material detection device, rewinding equipment, and method provided in this application. Please refer to the following for details. Figures 1 to 6 .

[0086] Based on the solution of Embodiment 1 above:

[0087] Furthermore, taking real-time data including angle data as an example, the plane containing the rotation center line of the swing frame 1 and the plane containing the rotation center line of the pressure roller 5 forms a first plane, the plane containing the rotation center line of the swing frame 1 and the plane containing the rotation center line of the drum 2 forms a second plane, and the angle data is the angle value between the first plane and the second plane.

[0088] Correspondingly, such as Figures 1 to 3 As shown, the acquisition module is an angle sensor 61, which is mounted on the swing frame 1 or on the drive mechanism 4 to detect angle data.

[0089] Taking a swing frame 1 with a fixed swing shaft 11, which is rotatably mounted via bearings to enable the swing frame 1 to swing, the detection end of the acquisition module is connected to the swing shaft 11 of the swing frame 1 to detect the rotation angle of the swing shaft 11 and obtain the swing angle data of the swing frame 1. Taking the drive mechanism 4 as a rotary motor, one end of the output shaft of the rotary motor can be directly connected to the swing shaft 11, while the detection end of the acquisition module can be connected to the other end of the output shaft of the drive mechanism 4. The angle sensor 61 can use an existing high-precision angle acquisition module without limitation.

[0090] Furthermore, taking the detection data as angle data as an example, the preset algorithm formula includes the first algorithm formula:

[0091]

[0092]

[0093] in:

[0094] D is the diameter of the remaining coil 3, D0 is the outer diameter of the drum 2, T is the thickness of the strip in coil 3 (a known value), L is the remaining length of coil 3, D1 is the diameter of the pressure roller 5, θ is the angle data, and A is the distance between the rotation center line of the swing frame 1 and the rotation center line of the drum 2. The values ​​of parameters D0, T, D1, and A are all obtainable in advance.

[0095] First, the diameter D of the remaining material roll 3 is calculated using formula f1, and then the required remaining length of material roll 3 is calculated using formula f2.

[0096] Formula f1 is derived from the following formula:

[0097] C=A×sinθf11

[0098]

[0099]

[0100] D = 2B - D1 f14

[0101] Wherein, B is the distance from the rotation center line of pressure roller 5 to the rotation center line of drum 2, and A is the distance between the rotation center line of swing frame 1 and the rotation center line of drum 2;

[0102] The plane containing the rotation center line of pressure roller 5 and the rotation center line of drum 2 is the third plane, and the plane containing the rotation center line of swing frame 1 and the rotation center line of pressure roller 5 is the fourth plane. α is the angle between the third plane and the fourth plane.

[0103] C is the distance from the rotation center line of drum 2 to the fourth plane;

[0104] The remaining length information of the corresponding material roll 3 can be calculated in real time using the angle data obtained from the detection.

[0105] In this application, a pressure sensor, such as an embedded pressure detection module, is also connected between the pressure roller 5 and the swing mechanism to detect the pressure applied by the pressure roller 5 to the material roll 3, so as to avoid the pressure roller 5 from excessively squeezing the material roll 3.

[0106] Furthermore, such as Figures 4 to 6 As shown, taking real-time data including relative distance data as an example, the relative distance data is the change in distance between the rotation center line of the pressure roller 5 and the rotation center line of the drum 2; as the strip of the material roll 3 is continuously unwound, the single-sided thickness of the material roll 3 continuously decreases, and correspondingly the distance between the rotation center line of the pressure roller 5 and the rotation center line of the drum 2 gradually decreases.

[0107] Correspondingly, the acquisition module can be a displacement sensor 62, mounted on the swing frame 1, for acquiring relative distance data. Specifically, the displacement sensor 62 is installed at one end of the swing frame 1 where the pressure roller 5 is mounted, and is positioned along the axial direction of the pressure roller 5 on one side of that end. This displacement sensor 62 can be a contact-type displacement sensor, with its contact end in contact with the outer surface of the drum 2. When the distance between the rotation center line of the pressure roller 5 and the rotation center line of the drum 2 changes, the contact rod of the contact-type displacement sensor extends or retracts. By detecting this extension / retraction data, the distance change data can be obtained. The contact-type displacement sensor can be a contact-type digital sensor, without limitation.

[0108] Furthermore, taking the detection data as relative distance data as an example, the preset calculation formula and preset algorithm formula include the second algorithm formula:

[0109] H = H0 - H1 f1

[0110]

[0111] Where H is the remaining single-side thickness of coil 3, H0 is the initial single-side thickness of coil 3, H1 is the relative distance data, L is the remaining length information of coil 3, D0 is the outer diameter of roll 2, and T is the strip thickness of coil 3. H0, D0, and T are parameters that can be obtained in advance.

[0112] First, the thickness of the remaining material roll 3 on one side is determined by formula f1, and then the remaining length of material roll 3 is determined by formula f2.

[0113] The above formula f2 is derived from the following formula:

[0114] D=2H+D0 f21

[0115]

[0116]

[0117] Furthermore, the real-time data can include both angle data and relative distance data. The plane containing the rotation center line of the swing frame 1 and the rotation center line of the pressure roller 5 forms a first plane, and the plane containing the rotation center line of the swing frame 1 and the rotation center line of the drum 2 forms a second plane. The angle data is the angle value between the first plane and the second plane, while the relative distance data is the change value of the distance between the rotation center line of the pressure roller 5 and the rotation center line of the drum 2.

[0118] The data acquisition module includes an angle sensor 61 and a displacement sensor 62.

[0119] Angle sensor 61 is connected to the rotating shaft of pressure roller 5 or to the output shaft of drive mechanism 4 to collect angle data; displacement sensor 62 is installed on swing frame 1 to collect relative distance data; displacement sensor 62 is a contact displacement sensor, and its contact end is in contact with the outer surface of drum 2. The contact between the contact end and the outer surface of drum 2 can be point contact or surface contact.

[0120] Furthermore, the preset algorithm formula includes a first algorithm formula, a second algorithm formula, and a third algorithm formula;

[0121] The first algorithm formula is:

[0122]

[0123]

[0124] Where D is the diameter of the remaining material roll 3, D0 is the outer diameter of the drum 2, T is the thickness of the strip in the material roll 3, L1 is the remaining length information of the material roll 3, D1 is the diameter of the pressure roller 5, θ is the angle data, and A is the distance between the rotation center line of the swing frame 1 and the rotation center line of the drum 2.

[0125] The formula for the second algorithm is:

[0126] H = H0 - H1 f1

[0127]

[0128] Where H is the remaining thickness of one side of material roll 3, H0 is the initial thickness of one side of material roll 3, H1 is the relative distance data, L2 is the remaining length information of material roll 3, and D0 is the outer diameter of roll 2.

[0129] The third algorithm formula is:

[0130]

[0131] Where L0 is the remaining length result of material roll 3.

[0132] Under this design, not only angle data is collected, but also relative distance data is collected to achieve dual data collection, thereby obtaining the remaining length data of the two rolls 3.

[0133] At this point, the final output of the remaining length of material roll 3 is the average of the two calculated remaining length data. By averaging L1 and L2, the remaining length of material roll 3 is further optimized, which can better reduce errors, improve accuracy, and thus better save costs.

[0134] like Figure 7 as well as Figure 8 As shown, this application also discloses a roll changing device, including a frame 100, a cutting device 200, and at least one tail material detection device.

[0135] The frame 100 is provided with an unwinding station for placing the roll 2.

[0136] At least one tail material detection device is installed on the frame 100 to obtain information on the remaining length of the material roll 3 on the roll 2 located in the unwinding station.

[0137] The cutting device 200 is mounted on the frame 100 and is used to cut the material roll 3 located at the unwinding station.

[0138] Furthermore, it also includes a turntable 300, which is mounted on the frame 100.

[0139] To achieve automated roll changing, there are at least two rolls 2, which are rotatably mounted on a turntable 300 and arranged in a centrally symmetrical manner. Correspondingly, a driver is installed on the turntable 300 to drive the rolls 2 to rotate.

[0140] The turntable 300 is used to transport the roll 2 loaded with material roll 3 to the unwinding station by rotating itself, so as to realize the roll change.

[0141] At least two tail material detection devices are installed on the turntable 300 and arranged symmetrically at the center. Each of the two tail material detection devices is used to obtain the remaining length information of the material roll 3 on the drum 2. It can be understood that one tail material detection device is configured for each drum 2 to achieve one-to-one detection. In this application, both the drum 2 and the number of tail material detection devices are preferably designed to be two. Besides being arranged symmetrically at the center, the tail material detection devices can also be arranged symmetrically vertically or horizontally, etc., without any specific limitation.

[0142] The cutting device 200 is mounted on the frame 100 and is specifically located on one side of the turntable 300. It is used to cut the material roll 3 on the roll 2 located at the unwinding station.

[0143] The specific structures of the cutting device 200 and the turntable 300 in this equipment can be designed with reference to existing structures or directly adopted, and will not be described in detail.

[0144] like Figure 8 As shown, when one of the rolls 2 completes the unwinding of the roll 3 at the unwinding station and is in an empty state, the turntable 300 can drive the other roll 2 in a full state to switch with the roll 2 in an empty state by rotating itself, so as to realize the roll changing operation.

[0145] The turntable 300 is also equipped with a process pressure roller 301 that comes into contact with the foil material during the unwinding process.

[0146] like Figure 9 As shown, this application also discloses a tailings detection method, applied to the tailings detection device of Embodiment 1 or Embodiment 2 above, comprising the following steps:

[0147] S100, the detection component acquires real-time data on the relative position change between the pressure roller and the roll, and outputs the remaining length information of the material roll on the roll at the unwinding station based on the real-time data, wherein the pressure roller is pressed tightly against the material roll on the roll at the unwinding station by the action of the oscillating mechanism. Taking an example where the detection component includes a data acquisition module and a processing module communicatively connected to the data acquisition module, step S100 includes the following steps:

[0148] S1, the acquisition module collects real-time data on the relative position changes between the pressure roller and the drum and feeds it back to the processing module;

[0149] S2, the processing module outputs the remaining length information of the material roll on the drum based on the preset algorithm formula and real-time data.

[0150] Furthermore, such as Figures 1 to 6 As shown, taking real-time data as angle data as an example, the preset algorithm formula includes the first algorithm formula, and step S2 is as follows:

[0151] The processing module determines the remaining length information of the material roll 3 on the drum 2 based on the angle data according to the first algorithm formula.

[0152] First algorithm formula:

[0153]

[0154]

[0155] in:

[0156] D is the diameter of the remaining material roll 3, D0 is the outer diameter of the drum 2, T is the thickness of the strip in the material roll 3 (a known value), L is the remaining length of the material roll 3, D1 is the diameter of the pressure roller 5, θ is the angle data, and A is the distance between the rotation center line of the swing frame 1 and the rotation center line of the drum 2.

[0157] Furthermore, such as Figures 1 to 6 As shown, taking real-time data as relative distance data as an example, the preset algorithm formula includes the second algorithm formula, and step S2 is as follows:

[0158] The processing module determines the remaining length information of the material roll 3 on the roll 2 based on the relative distance data according to the second algorithm formula.

[0159] Second algorithm formula:

[0160] H = H0 - H1 f1

[0161]

[0162] Where H is the remaining single-side thickness of coil 3, H0 is the initial single-side thickness of coil 3, H1 is the relative distance data, L is the remaining length information of coil 3, D0 is the outer diameter of roll 2, and T is the strip thickness of coil 3.

[0163] Furthermore, such as Figure 10 As shown, taking real-time data including angle data and relative distance data as an example, the preset algorithm formula includes a first algorithm formula, a second algorithm formula, and a third algorithm formula. Step S2 is as follows:

[0164] S21, the processing module outputs the remaining length information of the material roll on the drum based on the angle data according to the first algorithm formula;

[0165] S22, the processing module outputs the remaining length information of the material roll on the drum based on the relative distance data according to the second algorithm formula;

[0166] S23, the processing module determines the remaining length of the material roll based on the remaining length information of the material roll obtained in steps S21 and S22 according to the third algorithm formula.

[0167] like Figures 1 to 6 As shown:

[0168] The first algorithm formula is:

[0169]

[0170]

[0171] Where D is the diameter of the remaining material roll 3, D0 is the outer diameter of the drum 2, T is the thickness of the strip in the material roll 3, L1 is the remaining length information of the material roll 3, D1 is the diameter of the pressure roller 5, θ is the angle data, and A is the distance between the rotation center line of the swing frame 1 and the rotation center line of the drum 2.

[0172] The formula for the second algorithm is:

[0173] H = H0 - H1 f1

[0174]

[0175] Where H is the remaining thickness of one side of material roll 3, H0 is the initial thickness of one side of material roll 3, H1 is the relative distance data, L2 is the remaining length information of material roll 3, and D0 is the outer diameter of roll 2.

[0176] The third algorithm formula is:

[0177]

[0178] Where L0 is the remaining length result of material roll 3.

[0179] like Figure 11 , Figure 7 as well as Figure 8 As shown, this application also discloses a roll changing method, applied to roll changing equipment, including the following steps:

[0180] S10, the detection component acquires real-time data on the relative position change between the pressure roller and the roll, and outputs the remaining length information of the roll on the roll at the unwinding station based on the real-time data and a preset algorithm formula, wherein the pressure roller is pressed against the roll on the roll at the unwinding station by the oscillating mechanism. It should be noted that this step is the same as the aforementioned step S100, and will not be described again.

[0181] S20, when the cutting device detects that the remaining length of the coil in the unwinding station reaches a first preset value, it moves to the preparation position. When it detects that the remaining length of the coil in the unwinding station reaches a second preset value, it cuts the coil. It should be noted that the first preset value is greater than the second preset value. When the remaining length of the coil 3 reaches the first preset value, the cutting device 200 moves into position to prepare for cutting. When the remaining length of the coil 3 reaches the second preset value, it can quickly cut the coil. This design can reduce operation time and improve operation efficiency.

[0182] S30, the turntable 300 rotates itself to exchange the roll 2 filled with material roll 3 with the roll 2 that has been unwound in the unwinding station, so as to realize the roll change.

[0183] The above provides a detailed description of the tail material detection device, roll changing equipment, and method provided in this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A roll changing device, characterized in that, It includes a frame (100), a cutting device (200), and at least one tail material detection device; The frame (100) is provided with an unwinding station for placing the roll (2); At least one of the tail material detection devices is installed on the frame (100) for acquiring the remaining length information of the roll (3) located in the unwinding station; wherein, the tail material detection device includes a detection component, a swing mechanism and a pressure roller (5); the pressure roller (5) is pivotally connected to the swing mechanism; the swing mechanism is used to drive the pressure roller (5) to swing so that the pressure roller (5) is in close contact with the roll (3) on the drum (2); the detection component is used to acquire real-time data of the relative position change between the pressure roller (5) and the drum (2), and output the remaining length information of the roll (3) according to the real-time data; The cutting device (200) is mounted on the frame (100) and is used to move to the preparation position when the remaining length information of the material roll (3) located in the unwinding station reaches a first preset value, and to cut the material roll (3) when the remaining length information reaches a second preset value; wherein the first preset value is greater than the second preset value.

2. The roll changing device according to claim 1, characterized in that, The swing mechanism includes a swing frame (1) and a drive mechanism (4); The pressure roller (5) is pivotally connected to the swing frame (1); The drive mechanism (4) is connected to the swing frame (1) and is used to drive the swing frame (1) to swing so that the pressure roller (5) is in close contact with the material roll (3) on the drum (2).

3. The roll changing device according to claim 2, characterized in that, The detection component includes a data acquisition module and a processing module connected to the data acquisition module; The acquisition module is used to acquire the real-time data and feed the real-time data back to the processing module; The processing module outputs the remaining length information of the material roll (3) based on the real-time data according to the preset algorithm formula.

4. The roll changing device according to claim 3, characterized in that, The real-time data includes angle data, wherein the plane containing the rotation center line of the swing frame (1) and the rotation center line of the pressure roller (5) forms a first plane, the plane containing the rotation center line of the swing frame (1) and the plane containing the rotation center line of the drum (2) forms a second plane, and the angle data is the angle value between the first plane and the second plane. The acquisition module is an angle sensor (61), which is installed on the swing frame (1) or on the drive mechanism (4) to acquire the angle data and feed the angle data back to the processing module.

5. The roll changing device according to claim 4, characterized in that, The preset algorithm formula includes the first algorithm formula: f1 f2 Where D is the diameter of the remaining roll (3), D0 is the outer diameter of the drum (2), T is the thickness of the strip of the roll (3), L is the remaining length information of the roll (3), D1 is the diameter of the pressure roller (5), θ is the angle data, and A is the distance between the rotation center line of the swing frame (1) and the rotation center line of the drum (2).

6. The roll changing device according to claim 3, characterized in that, The real-time data includes relative distance data, wherein the relative distance data is the change in distance between the rotation center line of the pressure roller (5) and the rotation center line of the drum (2); The acquisition module is a displacement sensor (62), which is installed on the swing frame (1) and is used to acquire the relative distance data; The displacement sensor (62) is a contact displacement sensor, and its contact end is in contact with the outer surface of the drum (2).

7. The roll changing device according to claim 6, characterized in that, The preset algorithm formula includes the second algorithm formula: f1 f2 Wherein, H is the thickness of the remaining roll (3) on one side, H0 is the thickness of the initial roll (3) on one side, H1 is the relative distance data, L is the remaining length information of the roll (3), D0 is the outer diameter of the roll (2), and T is the thickness of the strip of the roll (3).

8. The roll changing device according to claim 3, characterized in that, The real-time data includes angle data and relative distance data. The plane containing the rotation center line of the swing frame (1) and the rotation center line of the pressure roller (5) forms a first plane, and the plane containing the rotation center line of the swing frame (1) and the rotation center line of the drum (2) forms a second plane. The angle data is the angle value between the first plane and the second plane, and the relative distance data is the distance change value between the rotation center line of the pressure roller (5) and the rotation center line of the drum (2). The acquisition module includes an angle sensor (61) and a displacement sensor (62). The angle sensor is connected to the rotating shaft of the pressure roller (5) or to the output shaft of the drive mechanism (4) for collecting the angle data; The displacement sensor (62) is mounted on the swing frame (1) and is used to collect the relative distance data; The displacement sensor (62) is a contact displacement sensor, and its contact end is in contact with the outer surface of the drum (2).

9. The roll changing device according to claim 8, characterized in that, The preset algorithm formula includes a first algorithm formula, a second algorithm formula, and a third algorithm formula; The first algorithm formula is: f1 f2 Where D is the diameter of the remaining roll (3), D0 is the outer diameter of the drum (2), T is the thickness of the strip of the roll (3), L1 is the remaining length information of the roll (3), D1 is the diameter of the pressure roller (5), θ is the angle data, and A is the distance between the rotation center line of the swing frame (1) and the rotation center line of the drum (2). The second algorithm formula is: f1 f2 Wherein, H is the thickness of the remaining roll (3) on one side, H0 is the thickness of the initial roll (3) on one side, H1 is the relative distance data, L2 is the remaining length information of the roll (3), D0 is the outer diameter of the roll (2), and T is the thickness of the strip of the roll (3). The formula for the third algorithm is: f1 Where L0 is the remaining length of the roll (3).

10. The roll changing device according to claim 1, characterized in that, It also includes a turntable (300); The turntable (300) is mounted on the frame (100); There are at least two drums (2), which are rotatably mounted on the turntable (300) and arranged in a centrally symmetrical manner; The turntable (300) is equipped with a driver that drives the drum (2) to rotate in a one-to-one correspondence; The turntable (300) is used to transport the roll (2) loaded with material roll (3) to the unwinding station by rotating itself, so as to realize the roll change; At least two tailings detection devices are installed on the turntable (300) and arranged in a centrally symmetrical manner; At least two of the tail material detection devices are applied one-to-one to obtain information on the remaining length of the roll (3) on the roll (2).

11. A roll changing method, characterized in that, The method applied to the rewinding equipment as described in any one of claims 1 to 10 includes the following steps: The detection component acquires real-time data on the relative position change between the pressure roller (3) and the roll, and outputs the remaining length information of the roll (3) on the roll (2) at the unwinding station based on the real-time data according to the preset algorithm formula, wherein the pressure roller (3) is pressed against the roll (3) on the roll (2) at the unwinding station by the action of the swing mechanism. When the cutting device (200) determines that the remaining length of the material roll (3) in the unwinding station reaches the first preset value, it moves to the preparation position and cuts the material roll (3) when it determines that the remaining length of the material roll (3) in the unwinding station reaches the second preset value. The turret (300) rotates itself to exchange the roll (2) filled with material roll (3) with the roll (2) that has been unwound in the unwinding station, so as to realize the roll change.

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