Testing equipment and winding equipment

Abstract

The present application discloses a detection device and a winding device, wherein the detection device is used to detect a material tape in a material feeding and winding mechanism of the winding device, wherein the winding device comprises a guide assembly for outputting the material tape and a winding needle for winding the material tape, and the detection device comprises: an image acquisition assembly, wherein the image acquisition assembly is used to acquire an image of the material tape; and a calibration assembly, wherein the calibration assembly is arranged on the guide assembly and / or the winding needle, wherein the calibration assembly is located within an image acquisition range of the image acquisition assembly, and wherein the image acquisition assembly is calibrated by the calibration assembly.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and in particular to a detection device and a winding equipment. Background Art

[0002] In the production process of power batteries, the anode electrode sheet strip, cathode electrode sheet strip and the separator strip separated therein need to be wound to form a battery cell. In order to ensure the winding quality of the battery cell, a detection device is required to detect the alignment of the above-mentioned strips to prevent defective batteries from entering the next production process.

[0003] In the related art, before the detection device detects the alignment of the above-mentioned material strip, it is necessary to rely on the debugging personnel to hold a high-precision film ruler and calibrate it in coordination with the detection device. Since the manual operation of the debugging personnel is inefficient and prone to errors, the calibration efficiency is affected, and the consistency of the calibration of the detection device cannot be guaranteed. Utility Model Content

[0004] The embodiments of the present application disclose a detection device and a winding device. The detection device includes an image acquisition component and a calibration component. The image acquisition component realizes an automatic calibration function through the calibration component, thereby ensuring the accuracy and consistency of the calibration of the image acquisition component.

[0005] In order to achieve the above-mentioned purpose, in the first aspect, an embodiment of the present application discloses a detection device, which is used to detect a material tape in a winding device, and the winding device includes a guide component for outputting the material tape and a winding needle for winding the material tape, and the detection device includes: an image acquisition component, and the image acquisition component is used to acquire an image of the material tape; a calibration component, and the calibration component is arranged on the guide component or the winding needle, and the calibration component is located within the image acquisition range of the image acquisition component, and the image acquisition component is calibrated by the calibration component.

[0006] In a possible implementation of the first aspect, the calibration component includes: a first calibration object, which is disposed on the winding needle; and / or a second calibration object, which is disposed on the guide component.

[0007] In a possible implementation manner of the first aspect, the first marking object includes a first marking line extending along the axial direction of the winding needle and / or a second marking line extending along the radial direction of the winding needle.

[0008] In a possible implementation of the first aspect, there are at least two first calibration lines and at least two second calibration lines, a first preset distance is provided between the at least two first calibration lines, and a second preset distance is provided between the at least two second calibration lines.

[0009] In a possible implementation of the first aspect, the guide assembly includes a material guide roller for guiding the material strip, and the second calibration object is disposed on the material guide roller.

[0010] In a possible implementation manner of the first aspect, the second marking object includes a third marking line extending along the axial direction of the material guide roller and / or a fourth marking line extending along the radial direction of the material guide roller.

[0011] In a possible implementation manner of the first aspect, there are at least two third marking lines and at least two fourth marking lines, a third preset distance is provided between the at least two third marking lines, and a fourth preset distance is provided between the at least two fourth marking lines.

[0012] In a possible implementation manner of the first aspect, the first calibration object and / or the second calibration object includes a film ruler.

[0013] In a possible implementation of the first aspect, the detection device also includes a support assembly, which is arranged on the guide assembly and has an unfolded state and a folded state relative to the guide assembly, and a second calibration object is arranged on the support assembly; when the support assembly is in the unfolded state, the second calibration object is located within the image acquisition range of the image acquisition assembly; when the reel is winding the material tape, the support assembly is in a folded state to avoid the material tape.

[0014] In a possible implementation of the first aspect, the support assembly includes: a support seat, the support seat is arranged on the guide assembly; a support member, the support member is rotatably connected to the support seat, and the second calibration object is arranged on the support member; a driver, arranged on the support seat, and the driving end of the driver is connected to the support member to drive the support member to swing relative to the support seat, so that the support assembly can switch between an unfolded state and a folded state.

[0015] In a possible implementation of the first aspect, the image acquisition component includes: a first camera, which is calibrated by a first calibration object, and the first calibration object is located within the image acquisition range of the first camera; and / or a second camera, which is calibrated by a second calibration object, and the second calibration object is located within the image acquisition range of the second camera.

[0016] In a possible implementation of the first aspect, the detection device also includes: a base, a first driving component, which is arranged on the base, connected to the first driving component and / or the first camera, and can drive the first camera to approach or move away from the first calibration object; a second driving component, which is arranged on the base, connected to the second camera, and can drive the second camera to approach or move away from the second calibration object.

[0017] In a possible implementation of the first aspect, the first driving assembly includes a first mounting plate movably disposed on the base and a first driving member connected to the first mounting plate, and the first camera is disposed on the first mounting plate; and / or

[0018] The second driving assembly includes a second mounting plate movably arranged on the base and a second driving member connected to the second mounting plate, and the second camera is arranged on the second mounting plate.

[0019] In a possible implementation of the first aspect, the detection device also includes: a first light source, movably disposed on the base, the first light source is used to emit a first light to the material tape wound on the winding needle; and / or a second light source, movably disposed on the base, the second light source is used to emit a second light to the material tape in the guide assembly.

[0020] In a possible implementation of the first aspect, the material strip output by the guide assembly includes a first pole piece strip, a first diaphragm, a second pole piece strip and a second diaphragm that are stacked; the first camera faces the second diaphragm wound on the winding needle, and the first camera is used to capture a first image including the second diaphragm and the second pole piece strip; and / or the second camera faces the first pole piece strip before being wound on the winding needle, and is used to capture a second image including the first pole piece strip and the first diaphragm.

[0021] The second aspect of the present application also provides a winding device, including a detection device as provided in any embodiment of the first aspect of the present application, and a material feeding and winding mechanism, the material feeding and winding mechanism including a guide assembly for outputting the material tape and a winding needle for winding the material tape.

[0022] Compared with the prior art, the beneficial effects of this application are:

[0023] The detection device provided in the embodiment of the present application can realize automatic calibration of the image acquisition component by configuring the calibration component. Through the size reference provided by the calibration component, the image acquisition component can adjust the working parameters to ensure the accuracy of the detection. The detection device can more accurately measure the side edge alignment between multiple material strips and diaphragms in the material strip, so as to promptly discover and deal with abnormal conditions on the side edges of the material strip, thereby improving the reliability of the detection device and the battery cell production efficiency.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of a detection device provided in an embodiment of the present application;

[0027] Figure 2 It is a structural schematic diagram of the material strip;

[0028] Figure 3 A schematic diagram of the structure of a winding needle provided in an embodiment of the present application;

[0029] Figure 4 One of the structural schematic diagrams of the winding device provided in the embodiment of the present application;

[0030] Figure 5 The second structural schematic diagram of the winding device provided in the embodiment of the present application;

[0031] Figure 6 This is the third structural schematic diagram of the winding equipment provided in the embodiment of the present application.

[0032] Description of reference numerals:

[0033] 01-detection device; 02-winding device; 10-image acquisition component; 101-first camera; 102-second camera; 20-calibration component; 201-first calibration object; 2011-first calibration line; 2012-second calibration line; 202-second calibration object; 301-guide component; 3011-material guide roller; 3012-material feed guide plate; 302-winding needle; 40-support component; 401-support seat; 402-support Support member; 403-rotating shaft; 404-driver; 50-base; 60-first drive assembly; 601-first mounting plate; 602-first drive member; 70-second drive assembly; 701-second mounting plate; 702-second drive member; 80-first light source; 90-second light source; 100-material strip; 1001-first pole piece material strip; 1002-first diaphragm; 1003-second pole piece material strip; 1004-second diaphragm. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0036] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0037] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0039] In the winding process of the battery cell, in order to ensure the alignment between the side edges of the anode electrode sheet, cathode electrode sheet and the separator between them, it is usually necessary to use a visual inspection device to detect the alignment of the side edges of the above-mentioned strips to ensure the yield of the product and remove defective products in time. However, if there is an error in the detection accuracy of the visual inspection device itself, it may have a significant impact on the detection results, resulting in the production of defective products, or even causing good batteries to be mistakenly rejected.

[0040] Therefore, the calibration and correction of visual inspection devices are very important to improve the accuracy of the inspection results of visual inspection devices. However, it is difficult to ensure the accuracy and consistency of calibration by manual calibration by debugging personnel.

[0041] Based on the above problems, a calibration component is provided in the detection device provided in the embodiment of the present application, and the image acquisition component completes the calibration process through the calibration component, thereby realizing the automatic calibration function of the image acquisition component and ensuring the calibration accuracy and consistency of the image acquisition component.

[0042] like Figure 1The figure shows a schematic diagram of the structure of a detection device 01, the detection device 01 is used to detect the material tape 100 in the winding device 02, the winding device 02 includes a guide component 301 for outputting the material tape 100 and a winding needle 302 for winding the material tape 100, the detection device 01 includes an image acquisition component 10 and a calibration component 20, the image acquisition component 10 is used to acquire images of the material tape 100; the calibration component 20 is arranged on the guide component 301 and / or the winding needle 302, the calibration component 20 is located within the image acquisition range of the image acquisition component 10, and the image acquisition component 10 is calibrated by the calibration component 20.

[0043] The detection device 01 provided in the embodiment of the present application is applied to a winding device 02, which includes a guide assembly 301 and a winding needle 302. The guide assembly 301 is used to convey the material strip 100 to the winding needle 302. The material strip 100 is in a stretched state in the guide assembly 301, so that the winding needle 302 can wind the material strip 100 and form a battery cell. The winding needle 302 is usually constructed as a columnar structure, which can be a cylinder or a prism. The winding needle 302 is usually made of a metal material with a certain structural strength. The winding needle 302 can rotate around its own axis direction, so as to stack and wind the material strip 100 output by the guide assembly 301.

[0044] See also Figure 1 and Figure 2 The above-mentioned material strip 100 includes a first electrode sheet material strip 1001, a first diaphragm 1002, a second electrode sheet material strip 1003 and a second diaphragm 1004 which are stacked. The first electrode sheet material strip 1001 and the second electrode sheet material strip 1003 can be positive electrode coating material strips or negative electrode coating material strips, respectively. The first diaphragm 1002 and the second diaphragm 1004 are used to isolate and cover the first electrode sheet material strip 1001 and the second electrode sheet material strip 1003 during the process of conveying or winding the first electrode sheet material strip 1001 and the second electrode sheet material strip 1003.

[0045] like Figure 2 As shown, the width of the first diaphragm 1002 is greater than the width of the first pole piece material strip 1001 and the second pole piece material strip 1003, and the two side edges of the first diaphragm 1002 exceed the side edges of the first pole piece material strip 1001 and the second pole piece material strip 1003 respectively to isolate the first pole piece material strip 1001 and the second pole piece material strip 1003. The width of the second diaphragm 1004 can be equal to the width of the first diaphragm 1002, so that when the material strip 100 is wound around the winding needle 302 as a whole, the second diaphragm 1004 can isolate the wound first pole piece material strip 1001 and the second pole piece material strip 1003 to prevent the first pole piece material strip 1001 and the second pole piece material strip 1003 from contacting and forming a short circuit.

[0046] Optionally, the width of the first pole piece strip 1001 can be narrower than the width of the second pole piece strip 1003, that is, the distance between the side edges of the first pole piece strip 1001 and the second pole piece strip 1003 is L1, so as to further reduce the contact between the first pole piece strip 1001 and the second pole piece strip 1003.

[0047] Since the first diaphragm 1002 and the second diaphragm 1004 are light-transmissive, the image acquisition component 10 can acquire the alignment of the side edges of the first pole piece strip 1001 and the first diaphragm 1002 before the pole piece strip is wound, so as to determine whether the spacing between the side edges of the first pole piece strip 1001 and the first diaphragm 1002 is maintained at L2. After the strip 100 is wound to the winding needle 302, the image acquisition component 10 can acquire the alignment of the side edges of the second diaphragm 1004 and the second pole piece strip 1003 passing through the second diaphragm 1004, so as to determine whether the spacing between the side edges of the second pole piece strip 1003 and the second diaphragm 1004 is maintained at L3. After the above images are processed and merged, the alignment of the side edges between the first pole piece strip 1001, the first diaphragm 1002, the second pole piece strip 1003 and the second diaphragm 1004 can be obtained.

[0048] During the feeding process of the material strip 100, the first pole piece material strip 1001, the first diaphragm 1002, the second pole piece material strip 1003 and the second diaphragm 1004 are prone to sway, causing the first pole piece material strip 1001, the first diaphragm 1002, the second pole piece material strip 1003 and the second diaphragm 1004 to deviate from the normal transmission position. As a result, the alignment of the edges of the wound battery cells is poor, which will affect the quality of the battery cells. In addition, even if the first pole piece tape 1001, the first diaphragm 1002, the second pole piece tape 1003 and the second diaphragm 1004 are kept in the normal transmission position during the feeding process of the tape 100, alignment defects may still occur when the tape and the diaphragm are wound on the winding needle 302, and then the diaphragm may not be able to effectively isolate the first pole piece tape 1001 and the second pole piece tape 1003, or the edges of the first pole piece tape 1001 and the second pole piece tape 1003 may be exposed outside the first diaphragm 1002 or the second diaphragm 1004, causing the first pole piece tape 1001 and the second pole piece tape 1003 to contact each other and short-circuit, seriously affecting the quality of the wound battery cell and the product yield.

[0049] Therefore, the image acquisition component 10 in the detection device 01 needs to collect and detect the alignment of the side edges of the material strip 100 to ensure that during the transmission and winding process of the material strip 100, the alignment between the first pole piece material strip 1001, the first diaphragm 1002, the second pole piece material strip 1003 and the second diaphragm 1004 meets the production requirements.

[0050] The image acquisition component 10 can be a camera capable of visual inspection, such as a CCD (Charge coupled Device) industrial camera. A CCD camera is a semiconductor device that can convert optical images into digital signals to capture the side edge position of the material strip 100 during the transmission or winding process, and compare it with a preset standard position (for example: ideally, the preset spacing between the side edges of the first pole piece material strip 1001 and the first diaphragm 1002 is L2, and the preset spacing between the side edges of the second pole piece material strip 1003 and the second diaphragm 1004 is L3), so as to determine whether the material strip 100 has defects such as yaw or poor alignment.

[0051] Optionally, by reasonably adjusting the setting position and setting angle of the image acquisition component 10, the image acquisition component 10 can use a CCD camera to simultaneously capture the alignment of the side edges of the material tape 100 after it is wound on the winding needle 302, as well as the alignment of the side edges of the material tape 100 in the guide component 301.

[0052] It can be seen that the detection accuracy of the alignment of the side edges of the material strip 100 by the image acquisition component 10 has a significant impact on the quality of the battery cell. If the detection accuracy of the image acquisition component 10 itself deviates, the detection result of the image acquisition component 10 will be distorted, and it will not be able to truly reflect the actual alignment of the side edges of the material strip 100 during the conveying and winding process. Therefore, the detection device 01 provided in the embodiment of the present application is equipped with a calibration component 20. Before the image acquisition component 10 performs image acquisition, it can be automatically calibrated by the calibration component 20, so as to ensure the accuracy of the alignment detection of the material strip 100 by the image acquisition component 10.

[0053] Specifically, the calibration component 20 is located within the image acquisition range of the image acquisition component 10, that is, the image acquired by the image acquisition component 10 includes the calibration component 20, and the shape and size of the calibration component 20 are fixed and known. By comparing the relationship between the pixel size of the calibration component 20 in the image acquired by the image acquisition component 10 and the actual size of the calibration component 20, the current detection accuracy of the image acquisition component 10 can be determined. Exemplarily, if the ratio of the pixel size of the calibration component 20 in the image to the actual size of the calibration component 20 is a preset value, for example, the ratio is 1, it means that the detection accuracy of the image acquisition component 10 meets the detection accuracy requirements and can be directly used for alignment detection of the material strip 100. If the ratio of the pixel size of the calibration component 20 to the actual size of the calibration component 20 is not equal to the preset value, for example, the ratio deviates from 1, it means that there is an error in the accuracy of the image acquisition component 10 itself, and the internal parameters (such as focal length) and external parameters (such as the position and angle of the image acquisition component 10) of the image acquisition component 10 need to be adjusted until the ratio of the pixel size of the calibration component 20 in the image captured again by the image acquisition component 10 to the actual size of the calibration component 20 reaches the preset value, thereby ensuring that the size relationship between the image captured by the image acquisition component 10 and the actual scene accurately corresponds.

[0054] Furthermore, since the image acquisition component 10 needs to collect the alignment of the side edges of the material tape 100 before and after being wound on the winding needle 302, the calibration component 20 is set on the guide component 301 and / or the winding needle 302. On the one hand, it can ensure that the calibration component 20 is located within the image acquisition range of the image acquisition component 10. In this way, after the image acquisition component 10 is calibrated, the state of the material tape 100 before being wound and / or the final state after being wound on the winding needle 302 can be collected at the same time without adjusting the position. On the other hand, the calibration component 20 is set on the guide component 301 and / or the winding needle 302. Even if the guide component 301 and / or the winding needle 302 are slightly offset during the production process, the calibration component 20 can also move synchronously with the guide component 301 and / or the winding needle 302. That is, after the image acquisition component 10 is calibrated by the calibration component 20, the image of the material strip 100 can be directly acquired without adjusting the external parameters, and a clear image including the side edge of the material strip 100 can be obtained.

[0055] In this way, the detection device 01 provided in the embodiment of the present application can realize automatic calibration of the image acquisition component 10 by configuring the calibration component 20. Through the size reference provided by the calibration component 20, the image acquisition component 10 can adjust the working parameters to ensure the accuracy of the detection. The detection device 01 can more accurately detect the side edge alignment between multiple material strips and diaphragms in the material strip 100, and promptly discover and deal with abnormal conditions of the side edges of the material strip 100, thereby improving the reliability of the detection device 01 and the battery cell production efficiency.

[0056] In order to enable the image acquisition component 10 to be calibrated more accurately, in some embodiments, the calibration component 20 includes a first calibration object 201 and a second calibration object 202, wherein the first calibration object 201 is set on the winding needle 302, and / or the second calibration object 202 is set on the guide component 301.

[0057] The first calibration object 201 is set on the winding needle 302 and avoids the material tape 100, that is, the material tape 100 is wound on the area of ​​the winding needle 302 where the material tape 100 is not wound. In this way, no matter how the position and angle of the winding needle 302 change, the image acquisition component 10 can adapt to the position change of the winding needle 302 and re-calibrate automatically. After calibration, image acquisition can be performed directly without stopping for other adjustments, thereby improving the adaptability of the image acquisition component 10 during the calibration process.

[0058] Similarly, the second calibration object 202 is set on the guide component 301. Even if the guide component 301 is deviated in position, the image acquisition component 10 can adapt to the position change of the guide component 301 and re-calibrate automatically. After calibration, image acquisition can be performed directly, thereby improving the adaptability of the image acquisition component 10 during the calibration process.

[0059] It should be noted that the second calibration object 202 can be directly set on the guide component 301, and can also be indirectly set on the guide component 301 through other components. As long as the second calibration object 202 can move synchronously with the guide component 301, the image acquisition component 10 can be automatically recalibrated according to the position change of the guide component 301.

[0060] In one implementation of the first calibration object 201, Figure 3 As shown, the first marking object 201 may include a first marking line 2011 extending along the axial direction of the winding needle 302 and / or a second marking line 2012 extending along the radial direction of the winding needle 302 .

[0061] The first calibration line 2011 and the second calibration line 2012 extend along the axial direction and radial direction of the winding needle 302 respectively. The first calibration line 2011 and the second calibration line 2012 are similar to coordinates. In this way, during the calibration and correction of the image acquisition component 10, the length and position relationship of the first calibration line 2011 and the second calibration line 2012 can be compared with the pixel length and position relationship of the first calibration line 2011 and the second calibration line 2012 in the image to determine the detection accuracy of the image acquisition component 10 from multiple dimensions, thereby determining whether it is necessary to continue to calibrate the image acquisition component 10.

[0062] Further, there are at least two first demarcation lines 2011 and at least two second demarcation lines 2012, respectively, a first preset distance is provided between at least two first demarcation lines 2011, and a second preset distance is provided between at least two second demarcation lines 2012. The first preset distance and the second preset distance may be the same or different.

[0063] By setting at least two first calibration lines 2011 and second calibration lines 2012, multiple calibration lines can form a calibration grid structure. The calibration grid structure has more data points, which helps to improve the accuracy and reliability of the calibration of the image acquisition component 10.

[0064] In another implementation of the first calibration object 201, the first calibration object 201 may be a film ruler, which is a high-precision reference measuring instrument with an accuracy of 0.02 mm or 0.001 inches to provide a reliable detection reference. Therefore, using a film ruler with higher accuracy as the first calibration object 201 can further improve the calibration accuracy of the image acquisition component 10.

[0065] In one configuration of the second calibration object 202, as Figure 4 As shown, the guide assembly 301 includes a guide roller 3011 for guiding the material strip 100, and the second calibration object 202 is arranged on the guide roller 3011. The second calibration object 202 can be arranged away from the material strip 100, that is, the second calibration object 202 can be arranged in the area where the material strip 100 is not wound on the guide roller 3011.

[0066] The guide roller 3011 can be used to guide the transmission of the first diaphragm 1002. When the first diaphragm 1002 is in a stretched state, the guide roller 3011 can guide the first diaphragm 1002 to ensure that the material belt 100 maintains a stable transmission path during the transmission process.

[0067] As described above, setting the second calibration object 202 on the guide roller 3011 can ensure the movement consistency of the second calibration object 202 and the guide component 301. After the image acquisition component 10 is calibrated, it can directly acquire images of the material belt 100.

[0068] In another configuration of the second calibration object 202, as Figure 5 and Figure 6 As shown, the detection device 01 also includes a support component 40, which is arranged on the guide component 301 and has an unfolded state and a folded state relative to the guide component 301. The second calibration object 202 is arranged on the support component 40, that is, the second calibration object 202 is indirectly arranged on the guide component 301 through the support component 40.

[0069] The support component 40 has an unfolded state and a folded state relative to the guide component 301. The support component 40 can be unfolded when the image acquisition component 10 needs to be calibrated, and can be folded when the image acquisition component 10 does not need to be calibrated, so as to avoid the support component 40 interfering with the transmission of the material belt 100 and ensure the transmission efficiency of the material belt 100.

[0070] Exemplarily, when the support assembly 40 is in the unfolded state, the second calibration object 202 is located within the image acquisition range of the image acquisition assembly 10, so that the image acquisition assembly 10 can be calibrated by the second calibration object 202. When the winding needle 302 winds the material tape 100, the support assembly 40 is in the folded state to avoid the material tape 100, and the second calibration object 202 can exit the image acquisition range of the image acquisition assembly 10, so as to avoid the support assembly 40 and the second calibration object 202 from blocking the material tape 100.

[0071] In some embodiments, the support assembly 40 includes a support seat 401, a support member 402, and a driver 404. The support seat 401 is disposed on the guide assembly 301; the support member 402 is rotatably connected to the support seat 401, and the second calibration object 202 is disposed on the support member 402; the driver 404 is disposed on the support seat 401, and the driving end of the driver 404 is connected to the support member 402 to drive the support member 402 to swing relative to the support seat 401, so that the support assembly 400 switches between the unfolded state and the folded state.

[0072] Specifically, the support seat 401 is arranged on the guide assembly 301, the winding needle 302 is located on one side of the guide assembly 301, and the support member 402 is provided with a rotating shaft 403 which can rotate relative to the support seat 401, and the rotating axis of the rotating shaft 403 can be parallel to the rotating axis of the winding needle 302. The support member 402 is connected to the rotating shaft 403 and rotates relative to the support seat 401 through the rotating shaft 403.

[0073] The fixed end of the driver 404 is disposed on the support base 401, and the driving end of the driver 404 is disposed on the support member 402 to drive the support member 402 to rotate around the support base 401 through the rotating shaft 403. Optionally, the driver 404 may be a driving cylinder.

[0074] Optionally, the guide assembly 301 includes a material conveying guide plate 3012, and the support assembly 40 can be disposed on the material conveying guide plate 3012, and the material conveying guide plate 3012 provides structural support for the support assembly 40. Specifically, the support seat 401 is disposed on the material conveying guide plate 3012.

[0075] In this way, the driver 404 drives the support member 402 to swing relative to the support base 401, so that the support component 40 can switch between the unfolded state and the folded state relative to the guide component 301. When it is necessary to calibrate the image acquisition component 10, the support component 40 is unfolded and located within the image acquisition range of the image acquisition component 10. When it is not necessary to calibrate the image acquisition component 10, the support component 40 can be placed in a folded state, and the second calibration object 202 can withdraw from the image acquisition range of the image acquisition component 10. This can not only avoid interference between the support component 40 and the material belt 100, but also avoid the second calibration object 202 blocking the material belt 100.

[0076] In one implementation of the second marking object 202 , the second marking object 202 may include a third marking line extending along the axial direction of the guide roller 3011 and / or a fourth marking line extending along the radial direction of the guide roller 3011 (not shown).

[0077] The third calibration line and the fourth calibration line extend along the axial direction and radial direction of the guide roller 3011, respectively, and the third calibration line and the fourth calibration line are also similar to the coordinate system. In this way, during the calibration and calibration of the image acquisition component 10, the length and position relationship of the third calibration line and the fourth calibration line can be compared with the pixel length and position relationship of the third calibration line and the fourth calibration line in the image, and the detection accuracy of the image acquisition component 10 can be determined from multiple dimensions, and then it can be determined whether the image acquisition component 10 needs to be calibrated.

[0078] Further, there are at least two third marking lines and at least two fourth marking lines, and there is a third preset distance between at least two third marking lines, and there is a fourth preset distance between at least two fourth marking lines. The third preset distance and the fourth preset distance may be the same or different.

[0079] By setting at least two third calibration lines and a fourth calibration line, a plurality of calibration lines can form a calibration grid structure. The calibration grid structure has more data points, thereby helping to improve the accuracy and reliability of the calibration of the image acquisition component 10.

[0080] In another implementation of the second calibration object 202, the second calibration object 202 may be a film ruler, which is a high-precision reference measuring instrument with an accuracy of 0.02 mm or 0.001 inches, and can provide a reliable detection reference. Therefore, using a film ruler with higher accuracy as the second calibration object 202 can further improve the calibration accuracy of the image acquisition component 10.

[0081] In order to ensure that the image acquisition component 10 can accurately capture images of the side edge of the material tape 100 wound on the winding needle 302 and the side edge of the material tape 100 before being wound on the winding needle 302 at the same time, in some embodiments, the image acquisition component 10 includes a first camera 101 and / or a second camera 102, and the first camera 101 and the second camera 102 respectively capture images of the material tape 100 wound on the winding needle 302 and the material tape 100 before being wound on the winding needle 302.

[0082] The first camera 101 is calibrated by the first calibration object 201, and the first calibration object 201 is located within the image acquisition range of the first camera 101. The second camera 102 is calibrated by the second calibration object 202, and the second calibration object 202 is located within the image acquisition range of the second camera 102. In this way, each camera is configured with a calibration object, and the independent first calibration object 201 and second calibration object 202 can enable each camera to be calibrated separately, thereby improving the detection accuracy of the detection device 01.

[0083] In some embodiments, the detection device 01 further includes a base 50, a first driving assembly 60 and / or a second driving assembly 70. The first driving assembly 60 is disposed on the base 50, connected to the first camera 101, and can drive the first camera 101 to approach or move away from the first calibration object 201; the second driving assembly 70 is disposed on the base 50, connected to the second camera 102, and can drive the second camera 102 to approach or move away from the second calibration object 202.

[0084] The base 50 is used to support the guide assembly 301, the first camera 101, the second camera 102, the first drive assembly 60 and / or the second drive assembly 70 to ensure that the detection device 01 and the guide assembly 301 have a unified position reference. The base 50 can be made of a metal material with a certain supporting force.

[0085] During the calibration of the first camera 101, after determining that the external parameters of the first camera 101 need to be adjusted based on the proportional relationship between the pixel size and the actual size of the first calibration object 201, the imaging parameters of the first camera 101 can be adjusted by driving the first camera 101 to approach or move away from the first calibration object 201 through the first driving component 60, until the relationship between the pixel size of the first calibration object 201 in the second imaging by the first camera 101 and the actual size of the first calibration object 201 meets the preset ratio, thereby completing the calibration of the first camera 101.

[0086] Similarly, the second driving assembly 70 is also used to adjust the external parameters of the second camera 102 during the calibration process of the second camera 102, which will not be described in detail here.

[0087] Further, the first driving assembly 60 includes a first mounting plate 601 movably disposed on the base 50, and a first driving member 602 connected to the first mounting plate 601, and the first camera 101 is disposed on the first mounting plate 601; and / or the second driving assembly 70 includes a second mounting plate 701 movably disposed on the base 50, and a second driving member 702 connected to the second mounting plate 701, and the second camera 102 is disposed on the second mounting plate 701.

[0088] Specifically, the first mounting plate 601 can be slidably disposed on the base 50 through a slide, the fixed end of the first driving member 602 is disposed on the base 50, and the movable end of the first driving member 602 is disposed on the first mounting plate 601. The first driving member 602 drives the first mounting plate 601 to slide relative to the base 50, thereby driving the first camera 101 mounted on the first mounting plate 601 to approach or move away from the first calibration object 201, so as to complete the calibration process of the first camera 101.

[0089] Optionally, an angle adjustment component is further provided on the first mounting plate 601 , and the first camera 101 can adjust the mounting angle relative to the first mounting plate 601 through the angle adjustment component. The first camera 101 can adjust external parameters to further ensure the calibration accuracy of the first camera 101 .

[0090] Similarly, the second mounting plate 701 can be slidably set on the base 50 through a slide, the fixed end of the second driving member 702 can be set on the base 50, and the movable end of the second driving member 702 can be set on the second mounting plate 701. The second driving member 702 drives the second mounting plate 701 to slide relative to the base 50, thereby driving the second camera 102 installed on the second mounting plate 701 to approach or move away from the second calibration object 202.

[0091] Optionally, an angle adjustment component is further provided on the second mounting plate 701 , and the second camera 102 can adjust the installation angle relative to the second mounting plate 701 through the angle adjustment component. The second camera 102 can adjust external parameters to further ensure the calibration accuracy of the second camera 102 .

[0092] Optionally, the first driving member 602 and the second driving member 702 may be driving cylinders.

[0093] In order to further improve the imaging quality of the first camera 101 and the second camera 102, in some embodiments, the detection device 01 also includes a first light source 80 and / or a second light source 90, and the first light source 80 can be movably disposed on the base 50, and the first light source 80 is used to emit a first light to the material tape 100 wound on the winding needle 302; the second light source 90 can be movably disposed on the base 50, and the second light source 90 is used to emit a second light to the material tape 100 in the guide assembly 301.

[0094] When the first camera 101 is working, the first light source 80 emits a first light in the direction of the material tape 100 to partially illuminate the material tape 100 wound on the winding needle 302. The first camera 101 collects the image of the illuminated material tape 100, which can improve the imaging quality of the first camera 101 and ensure the accuracy of the alignment of the material tape 100 wound on the winding needle 302 obtained based on the image acquired by the first camera 101.

[0095] Similarly, when the second camera 102 is working, the second light source 90 emits a second light in the direction of the material strip 100, partially illuminating the material strip 100 in a stretched state in the guide assembly 301, so that the second camera 102 captures an image of the illuminated material strip 100, thereby improving the imaging quality of the second camera 102 and ensuring the accuracy of the alignment of the material strip 100 in the guide assembly 301 obtained based on the image acquired by the second camera 102.

[0096] Furthermore, the first light source 80 and / or the second light source 90 may be movably disposed on the base 50, so that the angles of light emitted by the first light source 80 and the second light source 90 may be adjusted, thereby improving the adaptability of the first light source 80 and the second light source 90 to different scenes.

[0097] In some embodiments, the material strip 100 output by the guide assembly 301 includes a first pole piece material strip 1001, a first diaphragm 1002, a second pole piece material strip 1003 and a second diaphragm 1004 which are stacked; the first camera 101 faces the second diaphragm 1004 wound on the winding needle 302, and the first camera 101 is used to capture a first image including the second diaphragm 1004 and the second pole piece material strip 1003; the second camera 102 faces the first pole piece material strip 1001 before being wound on the winding needle 302, and is used to capture a second image including the first pole piece material strip 1001 and the first diaphragm 1002.

[0098] Since the second diaphragm 1004 is light-transmissive, the first camera 101 can capture the alignment of the side edges of the second pole piece tape 1003 and the second diaphragm 1004. At the same time, the width of the first pole piece tape 1001 is smaller than the width of the second pole piece tape 1003. After the tape 100 is wound on the winding needle 302, the first pole piece tape 1001 is not visible from the outside. Therefore, the second camera 102 obtains the alignment between the side edges of the first pole piece tape 1001 and the first diaphragm 1002 in the tape 100 in the stretched state in the guide assembly 301. After the above images are processed and merged, the alignment of the side edges between the first pole piece tape 1001, the first diaphragm 1002, the second pole piece tape 1003 and the second diaphragm 1004 can be obtained.

[0099] It should be noted that, in the above embodiments, the first driving component 60 and the first light source 80 are for use with the first camera 101, and the second driving component 70 and the second light source 90 are for use with the second camera 102. If, in one embodiment, the detection device 01 includes the first camera 101, the detection device 01 is also correspondingly configured with the first driving component 60 and the first light source 80. Similarly, if, in one embodiment, the detection device 01 includes the second camera 102, the detection device 01 is also correspondingly configured with the second driving component 70 and the second light source 90.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A detection device, characterized in that: The detection device is used to detect the material tape in the winding device, the winding device includes a guide assembly for outputting the material tape and a winding needle for winding the material tape, and the detection device includes: An image acquisition component, the image acquisition component is used to acquire an image of the material strip; A calibration component, wherein the calibration component is arranged on the guide component and / or the winding needle, the calibration component is located within the image acquisition range of the acquisition component, and the image acquisition component is calibrated by the calibration component.

2. The detection device according to claim 1, characterized in that: The calibration component comprises: a first calibration object, the first calibration object being arranged on the winding needle; and / or A second calibration object is disposed on the guide assembly.

3. The detection device according to claim 2, characterized in that: The first marking object includes a first marking line extending along the axial direction of the winding needle and / or a second marking line extending along the radial direction of the winding needle.

4. The detection device according to claim 3, characterized in that: There are at least two of the first marking lines and at least two of the second marking lines, a first preset distance exists between at least two of the first marking lines, and a second preset distance exists between at least two of the second marking lines.

5. The detection device according to claim 2, characterized in that: The guide assembly includes a guide roller for guiding the material strip, and the second calibration object is arranged on the guide roller.

6. The detection device according to claim 5, characterized in that: The second marking object includes a third marking line extending in the axial direction of the guide roller and / or a fourth marking line extending in the radial direction of the guide roller.

7. The detection device according to claim 6, characterized in that: There are at least two third marking lines and at least two fourth marking lines, respectively. There is a third preset distance between at least two third marking lines, and there is a fourth preset distance between at least two fourth marking lines.

8. The detection device according to claim 2, characterized in that: The first calibration object and / or the second calibration object comprises a film ruler.

9. The detection device according to claim 2, characterized in that: The detection device also includes: A support assembly, wherein the support assembly is arranged on the guide assembly and has an unfolded state and a folded state relative to the guide assembly, and the second calibration object is arranged on the support assembly; When the supporting component is in the unfolded state, the second calibration object is located within the image acquisition range of the image acquisition component; when the roll is wound around the material tape, the supporting component is in a folded state to avoid the material tape.

10. The detection device according to claim 9, characterized in that: The support assembly comprises: A support seat, the support seat is arranged on the guide assembly; A support member, the support member is rotatably connected to the support seat, and the second calibration object is arranged on the support member; A driver is arranged on the support seat, and a driving end of the driver is connected to the support member to drive the support member to swing relative to the support seat, so that the support assembly switches between the unfolded state and the folded state.

11. The detection device according to any one of claims 2 to 10, characterized in that: The image acquisition component comprises: A first camera, the first camera is calibrated by the first calibration object, and the first calibration object is located within an image acquisition range of the first camera; and / or The second camera is calibrated by the second calibration object, and the second calibration object is located in the image acquisition range of the second camera.

12. The detection device according to claim 11, characterized in that: The detection device also includes: Base, a first driving component, disposed on the base, connected to the first camera and capable of driving the first camera to approach or move away from the first calibration object; and / or The second driving component is arranged on the base, the second driving component is connected to the second camera, and can drive the second camera to approach or move away from the second calibration object.

13. The detection device according to claim 12, characterized in that: The detection device also includes: a first light source, movably disposed on the base, the first light source being used to emit a first light to the material tape wound on the winding needle; and / or A second light source is movably disposed on the base, and the second light source is used to emit a second light to the material belt in the guide assembly.

14. The detection device according to claim 11, characterized in that: The material strip output by the guide assembly includes a first pole piece material strip, a first diaphragm, a second pole piece material strip and a second diaphragm which are stacked; The first camera faces the second diaphragm wound on the winding needle, and the first camera is used to capture a first image including the second diaphragm and the second pole piece strip; and / or The second camera faces the first pole piece strip before being wound on the winding needle, and is used to capture a second image including the first pole piece strip and the first diaphragm.

15. A winding device, characterized in that: include: The detection device according to any one of claims 1 to 14; The winding mechanism comprises a guide assembly for outputting the material tape and a winding needle for winding the material tape.

Images