Winding detection system

Abstract

The utility model discloses a winding detection system which comprises a winding device used for winding a material belt; the first camera module is used for carrying out image acquisition on the material belt on the winding device; the first light source module is configured to emit light towards the material belt; and the moving mechanism is connected with the first camera module, and the moving mechanism is used for driving the first camera module to be far away from the winding device in the winding process of the winding device. According to the winding detection system disclosed by the invention, under the condition that the thickness of the material belt on the winding device is continuously increased, the first camera module can be gradually far away from the winding device along with the increase of the thickness of the material belt, so that the focus or focal plane of the first camera module is always positioned on the outermost ring of the material belt of the winding device, and imaging is clear without out-of-focus; and the accuracy of winding detection can be improved.

Description

Technical Field

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

[0002] Current winding equipment is usually equipped with an image acquisition device, which is used to capture images of the wound material strip. However, the image acquisition position is usually located at a fixed position, and the captured image may be inaccurate, thereby reducing the accuracy of winding detection. Utility Model Content

[0003] An embodiment of the present application discloses a winding detection system, which can improve the accuracy of winding detection.

[0004] The present application discloses a winding detection system, comprising:

[0005] A winding device, used for winding the material strip;

[0006] a first camera module, configured to capture images of the tape on the winding device;

[0007] a first light source module, wherein the first light source module is configured to emit light toward the material strip;

[0008] A moving mechanism, wherein the moving mechanism is connected to the first camera module, and the moving mechanism is used to drive the first camera module away from the winding device during the winding process of the winding device.

[0009] In one embodiment, the winding detection system further comprises a base, and the moving mechanism is movably disposed on the base along a first direction;

[0010] The first camera module includes a first line scan camera and a first camera bracket. The first camera bracket is connected to the moving mechanism and is used to support the first line scan camera. The moving mechanism is connected to the first line scan camera through the first camera bracket.

[0011] In one embodiment, the moving mechanism includes a mounting plate and a moving drive member, the mounting plate is connected to the moving drive member, and the first camera bracket is connected to the mounting plate;

[0012] The base is provided with a first sliding portion, and the mounting plate is provided with a second sliding portion, which is connected to the first sliding portion so that the mounting plate can move relative to the base.

[0013] In one embodiment, the first light source module includes a first line-scanning light source and a first light source bracket. The first light source bracket is connected to the moving mechanism, and the first line-scanning light source is disposed on the first light source bracket.

[0014] In one embodiment, the winding detection system also includes a counting device corresponding to the winding device, the counting device is used to detect the number of winding turns of the material tape by the winding device, and the moving mechanism is used to move according to the number of winding turns to drive the first camera module away from the winding device.

[0015] In one embodiment, the moving mechanism is used to move each time the winding device winds one circle, so as to drive the first camera module away from the winding device.

[0016] In one embodiment, each time the winding device winds one circle, the moving mechanism drives the first camera module to move away from the winding device by a preset distance, and the preset distance matches the thickness of the material tape.

[0017] In one embodiment, the counting device is further configured to send a line trigger signal to the first camera module when the winding device starts winding;

[0018] The first camera module is further configured to capture images of the material strip according to the line trigger signal, and obtain a plurality of linear images corresponding to each turn of the material strip on the winding device;

[0019] The winding detection system further includes a controller configured to send a frame trigger signal to the first camera module;

[0020] The first camera module is used to generate a target image corresponding to each circle of material belt according to the frame trigger signal and the multiple linear images corresponding to each circle of material belt.

[0021] In one embodiment, the winding detection system further includes a second camera module, which is used to capture images of the material tape that is not wound onto the winding device.

[0022] In one embodiment, the material strip includes a first pole piece, a first diaphragm, a second pole piece, and a second diaphragm that are stacked;

[0023] The first camera module faces the second diaphragm wound on the winding device, and the first camera module is used to capture an image of the first material strip including the second diaphragm and the second pole piece;

[0024] The second camera module faces the first pole piece before being wound on the winding device, and the second camera module is used to capture an image of a second material strip including the first pole piece and the first diaphragm.

[0025] The winding detection system disclosed in the embodiment of the present application includes a winding device, a first camera module and a moving mechanism. The winding device can be used to wind the material strip, and the first camera module can be used to capture images of the material strip on the winding device. The first light source module is configured to emit light toward the material strip, so that the first camera module can shoot in a bright light environment, which is beneficial to improving the shooting quality of the first camera module. The moving mechanism is connected to the first camera module, and the moving mechanism is used to drive the first camera module away from the winding device during the winding process of the winding device, so that when the thickness of the material strip on the winding device continues to increase, the first camera module can gradually move away from the winding device as the thickness of the material strip increases, so that the focus or focal plane of the first camera module is always located on the outermost ring of the material strip of the winding device, thereby making the image clear and not out of focus, which is beneficial to improving the accuracy of winding detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. 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 any creative work.

[0027] Figure 1 This is a structural diagram of a winding detection system disclosed in an embodiment of the present application;

[0028] Figure 2 This is another structural schematic diagram of the winding detection system disclosed in the embodiment of the present application;

[0029] Figure 3 This is another structural diagram of the winding detection system disclosed in the embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] It should be noted that the terms "including" and "having" in the embodiments of the present application and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0032] It will be understood that the terms "first," "second," etc. used herein may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first camera module may be referred to as a second camera module, and similarly, a second camera module may be referred to as a first camera module. Both the first camera module and the second camera module are camera devices, but they are not the same camera device.

[0033] An embodiment of the present application discloses a winding detection system, which can improve the accuracy of winding detection.

[0034] The following is a detailed description with reference to the accompanying drawings.

[0035] like Figure 1 As shown, Figure 1 1 is a schematic structural diagram of a winding detection system disclosed in an embodiment of the present application, which may include a winding device 110, a first camera module 120, a first light source module 130, and a moving mechanism 140. The winding device 110 may be provided independently, the moving mechanism 140 may be connected to the first camera module 120, and the first light source module 130 may be provided independently or connected to the moving mechanism 140.

[0036] The winding device 110 can be used to wind a material strip. The winding device 110 may include a winding needle and a winding drive. The winding drive can drive the winding needle to rotate to wind the material strip. The winding drive can include a motor. The material strip may include, but is not limited to, an electrode sheet, a diaphragm, etc. Optionally, the winding device 110 can wind the material strip at a preset winding speed.

[0037] The first camera module 120 can be used to capture images of the material strip on the winding device 110. Multiple turns of the material strip can be wound on the winding device 110, and the material strip image captured by the first camera module 120 includes the outermost turn of the material strip on the winding device 110. Optionally, the first camera module can be a line scan camera, which acquires images by scanning line by line and is more suitable for dynamic winding scenes, thereby capturing a more comprehensive image of the material strip.

[0038] The first light source module 130 can be configured to emit light toward the strip. It is understood that the area illuminated by the first light source module 130 can be the same area as the area where the first camera module 120 captures images. Alternatively, the first light source module 130 can be a line scan light source module, emitting linear light that can match the linear image captured by the first camera module 120.

[0039] The moving mechanism 140 can be used to move the first camera module 120 away from the winding device 110 during the winding process of the winding device 110. The moving mechanism 140 can include a moving drive member, so that the moving drive member provides a driving force to move the moving mechanism 140 away from the winding device 110, thereby moving the first camera module 120 away from the winding device 110.

[0040] Optionally, the moving mechanism 140 can move away from the winding device 110 at a moving speed that matches the winding speed of the winding device 110, so that the focus or focal plane of the first camera module 120 is always located on the outermost circle of the material strip of the winding device 110.

[0041] Optionally, the moving mechanism 140 can drive the first camera module 120 to move in a first direction to move away from the winding device 110. Preferably, the first direction can be the direction in which the center position of the winding device 110 points to the first camera module 120, thereby ensuring that the image acquisition direction of the first camera module 120 remains unchanged, thereby improving the consistency of the collected material tape image. When the first camera module 120 is a line scan camera, it can also reduce the difficulty of stitching the line scan image and improve the image generation efficiency.

[0042] In one embodiment, the winding detection system further includes a base, on which the movable mechanism can be movably disposed along a first direction. Specifically, the movable mechanism 140 is movably disposed along the first direction on the base. The base can be made of a metal or alloy material with a certain degree of support, such as stainless steel. Optionally, the base can also be used to support one or more of the winding device 110, the first camera module 120, and the first light source module 130, without limitation.

[0043] In order to more clearly introduce the relationship between the first camera module 120, the first light source module 130 and the moving mechanism 140, Figure 2 As shown, Figure 2 FIG2 is another structural diagram of the winding detection system disclosed in an embodiment of the present application. The first camera module 120 may include a first line scan camera 121 and a first camera bracket 122. The first camera bracket 122 is connected to a moving mechanism 140. The first camera bracket 122 is used to support the first line scan camera 121. The moving mechanism 140 is connected to the first line scan camera 121 via the first camera bracket 122, so that the first line scan camera 121 can be moved away from the winding device 110 via the first camera bracket 122 during the winding process of the winding device 110.

[0044] The first camera bracket 122 can be used to adjust the image acquisition direction of the first line scan camera 121. Specifically, before the winding device 110 is wound, the image acquisition direction of the first line scan camera 121 can be adjusted by the first camera bracket 122 so that the image acquisition direction of the first line scan camera 121 is the first direction, so that when the first line scan camera 121 moves away from the winding device 110, the image acquisition direction of the first line scan camera 121 remains unchanged.

[0045] The first light source module 130 may include a first line-scan light source 131 and a first light source bracket 132. The first line-scan light source 131 can emit a linear light. The first light source bracket 132 can adjust the direction of the light emitted by the first line-scan light source 131 so that the linear light emitted by the first line-scan light source 131 reaches the image acquisition position of the first line-scan camera 121, namely, the outermost coil of the web wound by the winding device 110. Optionally, the first light source bracket 132 can be connected to the moving mechanism 140. The moving mechanism 140 can also use the first light source bracket 132 to move the first line-scan light source 131 away from the winding device 110 during the winding process of the winding device 110, thereby matching the movement of the first line-scan camera 121. In other words, as the moving mechanism moves in the first direction, it drives the first camera module and the first light source module together in a direction away from the winding device, so that the position of the light emitted by the first light source module always matches the shooting position of the first camera module.

[0046] The moving mechanism may include a mounting plate 141 and a moving drive member 142, wherein the mounting plate 141 is connected to the moving drive member 142, the first camera bracket 122 may be connected to the mounting plate 141, and the mounting plate 141 may be movably connected to the base along a first direction. Specifically, the base may be provided with a first sliding portion, and the mounting plate 141 may be provided with a second sliding portion, which may be connected to the first sliding portion so that the mounting plate 141 is movable relative to the base. In other words, during the winding process of the winding device, the mounting plate 141 can be driven by the moving drive member 142 so that the mounting plate 141 moves on the first sliding portion on the base via the second sliding portion. The moving drive member 142 may be a motor, the first sliding portion may be a sliding guide rail, and the second sliding portion may be a pulley. This is merely an example and is not intended to be limiting.

[0047] Optionally, the first light source bracket 132 may also be connected to the mounting plate 141 .

[0048] As an optional embodiment, the winding detection system further includes a counting device corresponding to the winding device 110, which is used to detect the number of turns of the material strip by the winding device 110. The counting device may include an encoder, which is used to detect the signal of the winding device 110 and convert it into the number of turns of the material strip. The moving mechanism 140 can be used to move according to the number of turns to drive the first camera module 120 away from the winding device 110, thereby improving the movement accuracy of the first camera module 120 and avoiding the situation where the camera module 120 moves too far or too far away.

[0049] Optionally, the moving mechanism 140 can also be used to move each time the winding device 110 winds one circle, so as to drive the first camera module 120 away from the winding device 110. It can be understood that each time the winding device 110 winds one circle, the thickness of the material strip wound by the winding device 110 increases by the thickness of one layer of material strip. Therefore, the moving mechanism 140 can also move a preset distance, which is a distance equal to the thickness of one layer of material strip, and the distance between the first camera module 120 and the winding device 110 also increases by the preset distance. This not only improves the movement accuracy of the first camera module 120, but also ensures that the images of a circle of material strip are all captured by the first camera module 120 at the same position, further improving the consistency of the material strip images captured by the first camera module 120.

[0050] In one embodiment, the counting device is further configured to send a line trigger signal to the first camera module 120 when the winding device 110 begins winding. The first camera module 120 is further configured to capture images of the material strip according to the line trigger signal, thereby obtaining multiple line images corresponding to each turn of the material strip on the winding device 110. In other words, the counting device can send a line trigger signal to the first camera module 120, triggering the first camera module 120 to begin scanning line by line, thereby obtaining multiple line images.

[0051] The winding inspection system also includes a controller configured to send a frame trigger signal to the first camera module 120. The first camera module 120 generates a target image corresponding to each web wrap based on the frame trigger signal and the multiple linear images corresponding to each web wrap. The frame trigger signal can include a high-level signal or a low-level signal, and is used to mark the linear image currently being captured by the first camera module 120.

[0052] Optionally, the first camera module 120 can determine a first image and a second image corresponding to each loop of the material strip based on the frame trigger signal and the multiple linear images corresponding to each loop of the material strip, where the first image is composed of the first linear image among the multiple linear images, and the second image is composed of the second linear image among the multiple linear images. The first linear image is a linear image captured by the first camera module 120 when the frame trigger signal is a high-level signal, and the second linear image is a linear image captured by the first camera module 120 when the frame trigger signal is a low-level signal.

[0053] Among them, the first image may refer to the image corresponding to the important area of ​​each ring of material belt, for example, the image corresponding to the tab, and the second image may refer to the image corresponding to other areas of each ring of material belt. Compared with the important areas, other areas require less content to be detected. The controller can detect the coating problems of the electrode sheet and the diaphragm, and the defects of the electrode sheet based on the first image and the second image. When the first image includes the tab, the controller can also detect the folding problem and defect problem of the tab based on the first image. Image classification is performed through frame trigger signals, which improves the efficiency of pole piece detection.

[0054] In one embodiment, Figure 3 As shown, Figure 3 This is another structural schematic diagram of the winding detection system disclosed in the embodiment of the present application. The winding detection system can also include a second camera module 150. The second camera module 150 is used to capture images of the material strip that is not wound onto the winding device, thereby improving the comprehensiveness of the captured images and thus improving the comprehensiveness of the winding detection.

[0055] The material strip may include a first electrode sheet 161, a first separator 162, a second electrode sheet 163, and a second separator 164, which are stacked in a certain order from the inside to the outside of the winding device. Of the first electrode sheet 161 and the second electrode sheet 163, one is a positive electrode sheet and the other is a negative electrode sheet. Due to the light-transmitting properties of the diaphragm and the electrode, that is, the diaphragm is light-transmitting and the electrode is not light-transmitting, the first camera module 120 is facing the second diaphragm 164 wound on the winding device 110, and the first camera module 120 is used to collect the image of the first material strip including the second diaphragm 164 and the second electrode 163. The second camera module 150 is facing the first electrode 161 that is not wound on the winding device 110, and the second camera module 150 is used to collect the image of the second material strip including the first electrode 161 and the first diaphragm 162, so that the first electrode 161, the first diaphragm 162, the second electrode 163 and the second diaphragm 164 can be comprehensively inspected, thereby improving the comprehensiveness of the winding inspection.

[0056] Optionally, the winding scanning system may further include a second light source module. Unlike the first light source module 130, which is configured to emit light toward the material strip on the winding device 110, the second light source module is also configured to emit light toward the material strip not wound onto the winding device 110, that is, toward the first pole piece 161 not wound onto the winding device 110. The structure of the second light source module is similar to that of the first light source module and will not be described in detail here. It is understood that since the second camera module is not affected by the increase in the number of winding layers of the material strip, the second camera module can be set on the base without being connected to the moving mechanism 140.

[0057] Throughout this specification, references to terms such as "some embodiments," "other embodiments," and "desired embodiments" indicate that a particular feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative descriptions of these terms do not necessarily refer to the same embodiment or example.

[0058] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A winding detection system, characterized in that: include: A winding device, used for winding the material strip; a first camera module, configured to capture images of the tape on the winding device; a first light source module, wherein the first light source module is configured to emit light toward the material strip; A moving mechanism, wherein the moving mechanism is connected to the first camera module, and the moving mechanism is used to drive the first camera module away from the winding device during the winding process of the winding device.

2. The winding detection system according to claim 1, characterized in that: The winding detection system further includes a base, and the moving mechanism is movably disposed on the base along a first direction; The first camera module includes a first line scan camera and a first camera bracket. The first camera bracket is connected to the moving mechanism, and the first line scan camera is arranged on the first camera bracket. The moving mechanism is connected to the first line scan camera through the first camera bracket.

3. The winding detection system according to claim 2, characterized in that: The moving mechanism includes a mounting plate and a moving drive member, the mounting plate is connected to the moving drive member, and the first camera bracket is connected to the mounting plate; The base is provided with a first sliding portion, and the mounting plate is provided with a second sliding portion, which is connected to the first sliding portion so that the mounting plate can move relative to the base.

4. The winding detection system according to claim 1, characterized in that: The first light source module includes a first line-scanning light source and a first light source bracket. The first light source bracket is connected to the moving mechanism, and the first line-scanning light source is arranged on the first light source bracket.

5. The winding detection system according to claim 1, characterized in that: The winding detection system also includes a counting device corresponding to the winding device, the counting device is used to detect the number of winding turns of the material strip by the winding device, and the moving mechanism is used to move according to the number of winding turns to drive the first camera module away from the winding device.

6. The winding detection system according to claim 5, characterized in that: The moving mechanism is used to move each time the winding device winds one circle, so as to drive the first camera module away from the winding device.

7. The winding detection system according to claim 6, characterized in that: Each time the winding device winds one circle, the moving mechanism drives the first camera module to move away from the winding device by a preset distance, and the preset distance matches the thickness of one circle of the material tape.

8. The winding detection system according to claim 5, characterized in that: The counting device is further configured to send a line trigger signal to the first camera module when the winding device starts winding; The first camera module is further configured to capture images of the material strip according to the line trigger signal, and obtain a plurality of linear images corresponding to each turn of the material strip on the winding device; The winding detection system further includes a controller configured to send a frame trigger signal to the first camera module; The first camera module is used to generate a target image corresponding to each circle of material belt according to the frame trigger signal and the multiple linear images corresponding to each circle of material belt.

9. The winding detection system according to claim 1, characterized in that: The winding detection system also includes a second camera module, which is used to capture images of the material strip that is not wound onto the winding device.

10. The winding detection system according to claim 9, characterized in that: The material strip includes a first pole piece, a first diaphragm, a second pole piece and a second diaphragm which are stacked; The first camera module is arranged toward the second diaphragm wound on the winding device, and the first camera module is used to capture an image of the first material strip including the second diaphragm and the second pole piece; The second camera module is arranged toward the first pole piece before being wound on the winding device, and the second camera module is used to capture an image of a second material strip including the first pole piece and the first diaphragm.

Images