Tab positioning method, tab processing system, and storage medium

Abstract

The application discloses a tab positioning method, a tab processing system and a storage medium. The method comprises the following steps: obtaining a path distance L of a tab from a tab processing position to an observation position, calculating a difference value between the path distance L and a preset tab interval Sn to obtain a target distance; when a previous tab passes through the observation position, the previous tab is continuously conveyed by the target distance S, and at this time, a position on the tab corresponding to the tab processing position is the position of a target tab. When the position of the target tab is determined, the target pulse signal is obtained according to the target distance S instead of the preset tab interval Sn, and the target distance S is much smaller than the preset tab interval Sn, so that the number of the target pulse signal is smaller, and the probability of the occurrence of slippage, pulse loss and jump instability in the execution process of a few pulse signals is lower, thereby improving the positioning precision of the tab, providing guarantee for the welding or cutting of the subsequent tab, and being favorable to improving the quality of the final product.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser processing, in particular to a tab positioning method, a tab processing system and a storage medium. BACKGROUND

[0002] The quality requirement of lithium battery products is high, one of the important parameters is the preset tab pitch accuracy of the battery tab, however, how to improve the accuracy of the preset tab pitch has always been a problem in the industry.

[0003] The common tab cutting pitch control method is mainly to determine the forward distance of the tab by the pulse number of the driving motor, that is, to set the pulse number, and then to feed back the rotation angle, angular velocity and angular acceleration, and the roll diameter size and other parameter information of the conveying roller to the control system through the encoder, so as to calculate the moving distance of the tab, when the moving distance reaches the set preset tab pitch, it is determined as the position of the next tab processing, and the laser equipment is controlled to cut and process.

[0004] However, in the actual operation process, there are many uncontrollable factors involved, such as slippage between the main drive roller of the driving motor and the material, loss of encoder pulses, main drive roller rotation jump, etc., which will cause the actual conveying length of the tab and the system set length to be inconsistent, so that the preset tab pitch accuracy error usually reaches more than 0.2mm. Moreover, most importantly, this error is linearly positively correlated with the length of the preset tab pitch and the tab conveying length, so it will seriously affect the actual processing of the tab.

[0005] In view of the above problems, there are related researches, such as using big data analysis capability to collect a large number of error values of the preset tab pitch that have been processed, and setting the value as a correction parameter in advance to the control system of the running equipment, so as to reduce the error value of the overall preset tab pitch. However, by taking this method, on the one hand, it does not have any correction effect on the tab that has been processed, it is a kind of after-prevention measure, and the timeliness is weak; on the other hand, it cannot guarantee that the accuracy of each preset tab pitch can be improved, especially the accuracy of the preset tab pitch at the beginning of processing will decrease, it is a statistical level optimization, which is not conducive to guarantee the actual quality of the product. SUMMARY

[0006] In order to solve the defects of low preset tab pitch accuracy and large error in the prior art, the present application proposes a tab positioning method, a tab processing system and a storage medium.

[0007] As a first aspect, the technical solution adopted by the present application is that the tab positioning method comprises the following steps:

[0008] S1, obtaining a path distance L of the tab from the tab processing position to the observation position, calculating a difference between the path distance L and a preset tab interval Sn between two adjacent tabs, to obtain a target distance S, wherein S = Sn-L, and S ≥ 0;

[0009] S2, detecting a position of a previous tab, and continuously transporting the previous tab by a target distance S when the previous tab passes through the observation position, wherein a position on the tab corresponding to the tab processing position is a position of a target tab.

[0010] Preferably, the S1 further comprises: determining a target pulse signal according to the target distance S after the target distance S is determined, and transporting the tab from the observation position by the target distance S according to the target pulse signal.

[0011] Preferably, the target distance S is less than the path distance L.

[0012] Preferably, a number of pulses corresponding to the target pulse signal is 200-1000.

[0013] Preferably, after the path distance L is obtained in the S1, a preset pulse signal is determined, and the tab is transported from the tab processing position to the observation position according to the preset pulse signal; a ratio of a number of pulses corresponding to the target pulse signal to a number of pulses corresponding to the preset pulse signal is (0-10):100.

[0014] Preferably, the method further comprises: obtaining an actual number of pulses K of the previous tab from the tab processing position to the observation position, and comparing and calculating a preset number of pulses Mn corresponding to the path distance L to obtain a compensation number of pulses M, and compensating and correcting the target pulse signal according to the compensation number of pulses M, wherein M = Mn-K.

[0015] Preferably, the compensating and correcting the target pulse signal according to the compensation number of pulses M means compensating and correcting a preset number of pulses Mn of the target tab and / or a next target tab, or compensating and correcting a compensation number of pulses M of the next target tab.

[0016] Preferably, the compensating and correcting the target pulse signal according to the compensation number of pulses M means obtaining a compensation distance according to the compensation number of pulses M, and adjusting a displacement of a detection device arranged at the observation position according to the compensation distance to compensate and correct the path distance L.

[0017] As a second aspect, the technical solution adopted by the present application is a tab processing system, comprising:

[0018] A tab conveying module comprising a main drive assembly and a roller assembly.

[0019] The tab processing module is located on the conveying path of the tab sheet and welds the tab or cuts the tab sheet.

[0020] The detection module is located downstream of the tab processing module and sends a detection signal when detecting a tab, and the path distance L between the detection module and the tab processing module is less than or equal to the preset tab distance Sn between adjacent two tabs.

[0021] The control module is in signal connection with the tab conveying module, the tab processing module and the detection module, and determines the position of the target tab in response to the detection signal, and starts the tab processing module and processes the target tab on the tab sheet when the position of the target tab moves to directly opposite the tab processing module.

[0022] Preferably, the difference between the preset tab distance Sn between the adjacent two tabs and the path distance L between the detection module and the tab processing module is the target distance S, and the tab processing module is started and processes the target tab on the tab sheet when the tab continues to convey the target distance S from the position of the detection module.

[0023] Preferably, the difference S between the preset tab distance Sn between the adjacent two tabs and the path distance L between the detection module and the tab processing module is 0.2-0.5mm.

[0024] Preferably, the detection module includes a mounting plate and a tab position sensor, and the tab position sensor is adjustably arranged on the mounting plate.

[0025] As a third aspect, the application further provides a storage medium having a computer program stored thereon, and the computer program is executed by a processor to implement the tab positioning method as described above.

[0026] Compared with the prior art, the application has the following beneficial effects:

[0027] 1. When determining the position of the target tab, the path distance L is a measurable constant value, which does not need to be calculated by the number of pulses, so the influence of slippage, pulse loss and jump instability on the transmission distance can be avoided. As long as the tab is conveyed from the processing position to the observation position, the conveying distance is the path distance L, which is a value that can be determined in advance.

[0028] And in the present application, when the position of the target tab is determined, the target pulse signal obtained according to the target distance S is used instead of the preset tab distance Sn, that is, the partial length containing the path distance L is removed on the basis of the preset tab distance, and the removed part of the conveying length does not need to be reflected by the number of pulses, and the corresponding length controlled by the pulse signal is shortened. Correspondingly, the target distance S is much smaller than the preset tab distance Sn, that is, the number of target pulse signals is less than the number of pulse signals corresponding to the preset tab distance, and the probability of slipping, pulse loss, and jumping instability during the execution of a few pulse signals is low, which can significantly improve the accuracy of tab positioning, provide protection for subsequent tab welding or cutting, and help improve the quality of the final product.

[0029] 2、The difference between the preset tab distance Sn between the two adjacent tabs and the path distance L of the conveying path between the detection module and the tab processing module is: 0.2-0.5mm, by such setting, the value of the target distance S is controlled between 0.2-0.5mm, so that the corresponding target pulse number converted is less and reasonable, which is conducive to accurate control and reduces errors.

[0030] 3、Since the tab position sensor and the mounting plate are position-adjustable, the compensation correction process can also be realized by adjusting the position of the sensor, reducing the control program and control process of the control module, and also being conducive to maintaining the output stability of the motor in the main drive assembly, which is conducive to ensuring accuracy and improving the service life of the equipment.

[0031] 4、In determining the pulse signal, the actual pulse number K of the previous tab moving from the tab processing position to the observation position is also obtained, and the preset pulse number Mn corresponding to the path distance L is compared and calculated to obtain the compensation pulse number M, and the target pulse signal is compensated and corrected according to the compensation pulse number M. Through this process, even if slipping, pulse loss, and jumping instability occur during the conveying of the tab sheet, the sensor can detect and feedback the error value caused by the impact, and the closed loop of control can be formed to improve the accuracy of tab positioning, and the situation of increasing error with the increase of tab conveying length can be avoided, which provides protection for the accuracy of tab positioning. BRIEF DESCRIPTION OF DRAWINGS

[0032] The present application will be described in detail below in conjunction with the embodiments and the accompanying drawings, in which:

[0033] Figure 1 It is a method flowchart in an embodiment;

[0034] Figure 2is a method flow chart in the second embodiment;

[0035] Figure 3 is a method flow chart in the third embodiment;

[0036] Figure 4 is a system schematic diagram of the tab processing system in an embodiment;

[0037] Figure 5 is a side view of Figure 4

[0038] Figure 6 is a schematic diagram of the pole piece during tab processing.

[0039] 1, pole piece; 2, tab; 3, target position; 4, laser cutting device; 5, roller; 6, main drive motor; 7, sensor; 8, tab processing position; 9, observation position; preset tab interval Sn; path distance L; target distance S. DETAILED DESCRIPTION

[0040] The tab is an important component of the lithium ion battery. During the winding of the pole piece, the tab needs to be welded on one side of the pole piece, or the tab can also be cut on one side of the pole piece to form a concave tab position. The interval between the two adjacent tabs is a preset constant value, and the accuracy of the preset tab interval is an important parameter reflecting the quality of the battery product. Therefore, how to accurately position each tab and improve the accuracy of the preset tab interval is of great significance to the quality of the lithium battery product.

[0041] For convenience of description, as shown in Figures 5-6 , the preset tab interval between adjacent tabs is denoted as Sn, the conveying path distance between the tab processing position 8 and the observation position 9 is denoted as L, the difference between the preset tab interval Sn and the path distance L is defined as the target distance and denoted as S; at the same time, the preset pulse number required for the pole piece conveying path distance L is denoted as Mn, the actual pulse number required for the pole piece conveying path distance L is denoted as K, and the difference between the two is defined as the compensation pulse number and denoted as M. Moreover, the previous tab can be a finished tab that has been formed on the pole piece in advance, or it can be the first tab that is positioned and processed in advance during processing.

[0042] ​The ear processing position 8 is the position of the ear processing device such as a laser cutting device or a laser welding device, and in the actual processing process, it can be understood as the initial processing position of the ear processing device starting the processing operation on the pole piece. Since the ear processing device is perpendicular to the transmission direction of the pole piece, the installation position of the ear processing device is consistent with the initial processing position. The observation position 9 should be understood as the installation position of the sensor, and in the actual production, it can be understood as the position of the ear when the sensor detects the ear. Since the observation direction of the sensor is perpendicular to the transmission direction of the pole piece, the installation position of the sensor is consistent with the position of the ear detected by the sensor.

[0043] Embodiment 1: An ear positioning method for positioning the position of the ear when processing the ear on the pole piece 1, as shown in Figure 1 The method comprises the following steps:

[0044] S1, obtaining the path distance L of the ear from the ear processing position to the observation position, calculating the difference between the path distance L and the preset ear distance Sn between adjacent two ears to obtain a target distance S, wherein S = Sn-L, S ≥ 0;

[0045] S2, detecting the position of the previous ear, and continuing to transport the target distance S of the previous ear when the previous ear passes through the observation position. At this time, the position on the pole piece corresponding to the ear processing position is the target position 3 of the target ear.

[0046] In this embodiment, the target position 3 of the target ear is determined according to the target distance S instead of the preset ear distance Sn, and the target distance S is much smaller than the preset ear distance Sn, which greatly reduces the probability of slippage, pulse loss, and jump instability in the short-distance transportation process, improves the positioning accuracy of the ear, provides protection for the subsequent welding or cutting of the ear, and is beneficial to improve the quality of the final product.

[0047] Embodiment 2: An ear positioning method for positioning the position of the ear when processing the ear on the pole piece, as shown in Figure 2 The method comprises the following steps:

[0048] S1, obtaining the path distance L of the ear from the ear processing position to the observation position; calculating the difference between the path distance L and the preset ear distance Sn between adjacent two ears to obtain a target distance S, determining a target pulse signal according to the target distance S, and transporting the ear from the observation position to the target distance S according to the target pulse signal; wherein S = Sn-L, S ≥ 0;

[0049] S2, detecting the position of the previous lug, and continuing to transport the previous lug target distance S when the previous lug passes the observation position, at this time, the position on the sheet corresponding to the lug processing position is the target position 3 of the target lug.

[0050] In the embodiment, the position of the target lug is determined according to the target pulse signal obtained according to the target distance S, instead of according to the preset lug interval Sn, and the target distance S is much smaller than the preset lug interval Sn, so that the number of target pulse signals is small, and the probability of slippage, pulse loss, and jump instability in the execution process of a few pulse signals is low, thereby improving the accuracy of lug positioning, providing protection for the subsequent welding or cutting of the lug, and being beneficial to improving the quality of the final product.

[0051] In another embodiment, the target distance S is smaller than the path distance L. In another embodiment, the number of pulses corresponding to the target pulse signal is 200-1000. In another embodiment, after the path distance L is determined, the preset pulse signal is determined according to the path distance L, and the lug is transported from the lug processing position to the observation position according to the preset pulse signal; and the ratio of the number of pulses corresponding to the target pulse to the number of pulses corresponding to the preset pulse is (0-10):100, which can be 1:100, 1:10, 1:1, 3:10, 3:7, etc.

[0052] Through the above several embodiments for limiting the relationship between the target distance and the path distance, or even directly limiting the number of pulses of the target pulse and the number of pulses of the preset pulse, it can be further determined that the number of target pulses is small. Compared with the traditional main drive assembly, the error source is the whole transport distance, and the possibility of error is large, but in the present scheme, the error source is only a small target distance, which greatly reduces the risk of error.

[0053] Embodiment 3: The lug positioning method, which is different from embodiments 1 or 2, as shown in Figure 3 obtaining the actual pulse number K of the previous lug moving from the lug processing position to the observation position, and comparing and calculating the preset preset pulse number Mn corresponding to the path distance L to obtain the compensation pulse number M, and compensating and correcting the target pulse signal according to the compensation pulse number M, wherein M=Mn-K.

[0054] Specifically, the compensation and correction of the target pulse signal refers to the compensation and correction of the preset pulse number Mn of the target tab, or the compensation and correction of the preset pulse number Mn of the next target tab, or the compensation and correction of the compensation pulse number M of the next target tab, or the compensation and correction of the preset pulse number Mn of the target tab and the next target tab at the same time.

[0055] Through this process, even if slippage, pulse loss, and jump instability occur during the conveying of the tab sheet, the corresponding error value caused by the impact can be adjusted in time through the detection feedback of the sensor, forming a closed loop in control, which can improve the accuracy of tab positioning, and also avoids the situation that the error is continuously accumulated with the increase of the conveying length of the tab sheet, providing a guarantee for the accuracy of tab positioning.

[0056] In another embodiment, the compensation and correction of the target pulse signal according to the compensation pulse number M refers to obtaining a compensation distance according to the compensation pulse number M, and adjusting the displacement of the detection device arranged at the observation position according to the compensation distance to compensate and correct the path distance L, so that the pulse signal can match the actual conveying distance. The process of adjusting the position of the sensor to realize compensation and correction reduces the control program and control process of the control module, is also conducive to maintaining the output stability of the motor in the main drive assembly, and is conducive to guaranteeing the accuracy and improving the service life of the equipment.

[0057] Embodiment 4: A tab processing system, as shown in Figures 4-6 The tab sheet is unwound and conveyed forward through the tab conveying module, and the tab ear is formed through the tab processing module, and the positioning of each subsequent tab ear is completed through the detection module. Specifically:

[0058] The tab processing module is on the conveying path of the tab sheet 1, and is used for welding the tab ear 2 or cutting the tab sheet. In one embodiment, the tab processing module includes a mounting seat and a laser welding device, and the laser welding device is installed on the mounting seat through a driving member and can move along a welding path. To match this, there can also be a tab feeding and conveying device to provide tab raw materials for each tab welding.

[0059] In another embodiment, the tab processing module includes a mounting seat and a laser cutting device 4, and the laser cutting device is installed on the mounting seat through a driving member and can move along a cutting path. In order to facilitate adjustment and correction, the position between the laser welding device or the laser cutting device and the mounting seat can be adjusted, and the working position of the device can be changed by changing the different mounting positions between the device and the mounting seat.

[0060] In this embodiment, as shown in Figure 4 As preferred, the tab processing module further comprises a dust removal device respectively arranged at each of the laser cutting devices, and the dust removal device is arranged opposite to the working surface of the laser cutting device, i.e. in this embodiment, two dust removal devices are arranged, and the suction ports of the two dust removal devices are aligned with the working surfaces of the respective laser cutting devices. Of course, there can be only one dust removal device, and the dust removal device has multiple suction ports, each of which corresponds to a laser cutting device.

[0061] The detection module is downstream of the tab processing module, and the path distance L of the conveying path between the detection module and the tab processing module is less than or equal to the preset tab-to-tab distance Sn between adjacent tabs. The difference between the preset tab-to-tab distance Sn between adjacent tabs and the path distance L of the conveying path between the detection module and the tab processing module is the target distance S. When the tab is conveyed by the target distance S from the position of the detection module, the tab processing module is started and forms the target tab on the tab sheet.

[0062] As preferred, the difference between the preset tab-to-tab distance Sn between adjacent tabs and the path distance L of the conveying path between the detection module and the tab processing module is 0.2-0.5mm, such as 0.3mm. That is, in this embodiment, the sensor 7 is installed at a distance of 0.3mm from the tab processing position within a preset tab-to-tab distance. In this way, the target distance S can be ensured to be 0.3mm, and even if subsequent compensation correction is required, it is also maintained within a certain range of about 0.3mm, so that the pulse number of the target pulse signal is within a relatively stable range, and the error of the preset tab-to-tab distance is also within a relatively stable range.

[0063] In another embodiment, the ratio of the target distance S to the path distance L is (0-10):100, i.e. it can be 1:100, or 1:10, or 3:7, or 3:10, etc.

[0064] In one embodiment, in order to facilitate adjustment, the detection module is composed of a mounting plate and a tab position sensor 7, wherein the tab position sensor 7 is adjustably arranged on the mounting plate, and the position adjustment direction of the tab position sensor includes at least the conveying direction of the tab sheet.

[0065] Specifically, mounting holes are formed on the lug position sensor and the mounting plate, the lug position sensor and the mounting plate are fixed by connecting bolts sequentially penetrating through the two mounting holes, and at least one of the two mounting holes is a long slot, the length direction of which is along the conveying direction of the pole piece, providing a certain distance for the adjustment of the sensor 7.

[0066] In another embodiment, the mounting plate can also be fixed with a linear motion driving structure, the linear motion driving structure is in power connection with the lug position sensor, and the direction in which the driving structure exerts driving action on the lug position sensor is along the conveying direction of the pole piece. The driving structure can be a cylinder, a linear motor, a lead screw assembly, etc.

[0067] The control module is in signal connection with the pole piece conveying module, the lug processing module and the detection module, responds to the detection signal and determines the position of the target lug, starts the lug processing module when the position of the target lug moves to directly face the lug processing module, and processes the target lug on the pole piece.

[0068] The control module can be a CPU or an offline control card, which not only controls the start and stop of the motor of the main drive assembly, but also receives the lug position detection signal sent by the sensor. Specifically, the difference between the preset lug interval Sn between the two adjacent lugs and the path distance L of the conveying path between the detection module and the lug processing module is the target distance S. When the lug continues to convey the target distance S from the position of the detection module, the lug processing module starts and processes the target lug on the pole piece. That is, after the control module receives the detection signal that the lug passes through the observation position, it calculates the target pulse number matching the target distance S, and when it detects that the motor has output the corresponding pulse number, it controls the laser processing device to process the target position 3 of the pole piece to form the lug by welding or cutting.

[0069] In addition, the control module is also in signal connection with the driving structure of the lug position sensor to control the opening and closing of the driving structure. In actual use, the path distance L between the detection module and the lug processing module is determined, so the main drive motor 6 can convey the pole piece under the control of the preset pulse signal. If the lug is conveyed from the position of the lug processing module to the position of the detection module under the control of the pulse number corresponding to the preset pulse signal, it means that the conveying process is accurate and there is no error, so adjustment is not needed.

[0070] When the actual number of consumed pulses does not correspond to the preset number of pulses of the main drive motor when the tab is transported from the position of the tab processing module to the position of the detection module, it indicates that an error occurs in the transport process of the main drive motor, such as the slippage of the roller surface and the pole piece, the output shaft jump of the main drive motor, or the loss of pulses, etc. At this time, the actual number of consumed pulses and the preset number of pulses can be calculated, and a compensation pulse number can be obtained. According to the compensation pulse number, the preset pulse number of the main drive motor can be adjusted, or it can be converted into a transport distance, so as to adjust the position of the tab position sensor, and the correction effect can also be achieved. At this time, the control module needs to control the driving structure to start, and the stroke of the driving structure is the transport distance corresponding to the compensation pulse number.

[0071] Of course, in another embodiment, the position of the tab position sensor can also be adjusted manually.

[0072] It should be noted that in the above embodiment, the driving of the pole piece is by motor or servo motor, and the control of the motor start and rotation stroke is by pulse signal, that is, the pulse signal corresponding to different transport distances can be converted into different number of pulses, and the number of pulses is positively correlated with the transport distance. However, in other embodiments, other distance measurement methods can be used to replace the measurement of the number of pulses.

[0073] The working process of the tab processing system is as follows:

[0074] The pole piece is unwound under the action of the main drive motor and the plurality of rollers 5. When the pole piece passes through the tab processing module, the control module issues a processing instruction, and the laser cutting device starts cutting to form the first pair of tabs 2, and at the same time, the main drive motor continuously drives the pole piece to forward transport;

[0075] The detection module is downstream of the tab processing module. When the first pair of tabs passes through the position of the tab position sensor, the tab position sensor sends a position signal of the tab, and the control module continues to transport the pole piece to the target distance S according to the signal, and when the pole piece completes the movement of the distance, the laser cutting device is started to process the pole piece to form the second pair of tabs.

[0076] In determining the position of the second pair of tabs, the target pulse signal obtained according to the target distance S is used instead of the preset tab pitch Sn, that is, the part of the length containing the path distance L is removed from the preset tab pitch, and this part of the transport length does not need to be reflected by the number of pulses, which shortens the corresponding length to be controlled by the pulse signal.

[0077] Correspondingly, the target distance S is much smaller than the preset tab distance Sn, that is, the number of target pulse signals is less than the number of pulse signals corresponding to the preset tab distance, which greatly reduces the probability of slipping, pulse loss, and jump instability during the execution of a small number of pulse signals. Compared with the prior art, the accuracy of tab positioning can be significantly improved, which provides protection for subsequent tab welding or cutting and helps to improve the quality of the final product. Since the path distance L between the tab position sensor and the laser cutting device is less than the preset tab distance Sn, and in one embodiment, the difference is defined as the target distance S, S is 0.3 mm, so the number of pulses of the main drive motor is only 200-1000, greatly reducing the risk of error.

[0078] In addition, even if an error does occur during transportation, the actual number of pulses K of the first pair of tabs moving from the tab processing position to the observation position can be obtained and compared with the preset preset pulse number Mn corresponding to the path distance L to obtain a compensation pulse number M, and the target pulse signal corresponding to the target distance S is compensated and corrected according to the compensation pulse number M. Of course, the position of the tab position sensor can also be adjusted according to the compensation pulse number, or the preset pulse number Mn can be corrected.

[0079] Embodiment 5: A storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the tab positioning method of the preceding embodiment.

[0080] In the description of the present application, it should be noted that the positions or position relationships indicated by the terms "upper", "lower", etc. are based on the positions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Unless otherwise specified and limited, the terms "mounting", "connection", and "connection" should be interpreted broadly, for example, they can be fixedly connected, or detachably connected, or integrally connected; they can be mechanically connected, or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be connected internally between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0081] It should be noted that, in the present application, the relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0082] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tab positioning method, characterized by, The method comprises the following steps: S1, obtaining a path distance L of the tab from a tab processing position to an observation position, the path distance L being a measurable constant, calculating a difference between the path distance L and a preset tab interval Sn between two adjacent tabs to obtain a target distance S, wherein S = Sn-L, S ≥ 0; S2, detecting the position of a previous tab, and continuously conveying the previous tab by a target distance S when the previous tab passes through the observation position, at this time, the position on the tab corresponding to the tab processing position is the position of a target tab; The S1 further comprises: determining a target pulse signal according to the target distance S after determining the target distance S, and conveying the tab from the observation position by the target distance S according to the target pulse signal; The method further comprises: obtaining an actual pulse number K of the previous tab moving from the tab processing position to the observation position, and comparing and calculating a preset preset pulse number Mn corresponding to the path distance L to obtain a compensation pulse number M, and compensating and correcting the target pulse signal according to the compensation pulse number M, wherein M = Mn-K; The compensation pulse number M is used to compensate and correct the target pulse signal, which means that a compensation distance is obtained according to the compensation pulse number M, and a detection device arranged at the observation position is adjusted in displacement according to the compensation distance to compensate and correct the path distance L.

2. The tab positioning method of claim 1, wherein The target distance S is less than the path distance L.

3. The tab positioning method of claim 1, wherein The number of pulses corresponding to the target pulse signal is 200-1000.

4. The tab positioning method of claim 1, wherein After obtaining the path distance L in the S1, a preset pulse signal is determined, and the tab is conveyed from the tab processing position to the observation position according to the preset pulse signal; The ratio of the number of pulses corresponding to the target pulse signal to the number of pulses corresponding to the preset pulse is (0-10):

100.

5. The tab positioning method of claim 1, wherein The compensation pulse number M is used to compensate and correct the target pulse signal, which means that the preset pulse number Mn of the target tab and / or the next target tab is compensated and corrected, or the compensation pulse number M of the next target tab is compensated and corrected.

6. Tab processing system for carrying out the tab positioning method according to any one of claims 1 to 5, characterized in that The method comprises: A tab conveying module comprising a main drive assembly and a roller assembly; A tab processing module on a conveying path of the tab, which welds the tab or cuts the tab; A detection module downstream of the tab processing module, which sends a detection signal when detecting a tab, and the path distance L of the conveying path between the detection module and the tab processing module is less than or equal to the preset tab interval Sn between two adjacent tabs; A control module connected to the tab conveying module, the tab processing module and the detection module, which determines the position of a target tab in response to the detection signal, and starts the tab processing module when the position of the target tab moves to the tab processing module to process the target tab on the tab.

7. The tab processing system of claim 6, wherein The difference between the preset tab-to-tab distance Sn between the two adjacent tabs and the path distance L of the conveying path between the detection module and the tab processing module is a target distance S, and when the tabs continue to be conveyed by the target distance S from the position of the detection module, the tab processing module is started and forms target tabs on the tab sheet.

8. The tab processing system of claim 6, wherein The difference S between the preset tab-to-tab distance Sn between the two adjacent tabs and the path distance L of the conveying path between the detection module and the tab processing module is 0.2-0.5 mm.

9. The tab processing system of claim 6, wherein The detection module comprises a mounting plate and a tab position sensor, and the tab position sensor is adjustably arranged on the mounting plate.

10. A storage medium having stored thereon a computer program, characterized in that The computer program is executed by the processor to realize the tab positioning method of any one of claims 1-5.

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