Coiled material tailing control device and method

Abstract

The invention belongs to the technical field of lithium battery production, and discloses a coiled material tailing control device and method.The coiled material tailing control device comprises a winding module, an unwinding module and a controller, the winding module comprises a first material conveying roller, a winding drum and a marking machine, and an encoder is arranged at one end of the first material conveying roller; the marking machine is arranged towards the coiled material on the first material conveying roller so as to paste a label on the coiled material; the unwinding module comprises an unwinding reel, a reel changing device and a first detector, the first detector faces a coiled material on the unwinding reel and is used for detecting a label, and the controller is in communication connection with the encoder, the marking machine and the first detector. The first detector sends out the roll changing signal after detecting the label printed by the marking machine, the allowance of follow-up roll changing of the coiled material is accurately controlled, waste can be avoided, sudden downtime of the roll changing device can be avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production, and particularly relates to a control device and method for the tail material of a coil material. Background Art

[0002] With the improvement of the automation level of lithium battery production equipment, the requirements for automatic coil changing in the electrode section are also getting higher and higher. In the current battery production process, the electrode section is all coil materials. The wound coil materials are continuously fed to the subsequent processing device through a unwinding device. The unwinding device usually includes two unwinding drums. The two unwinding drums respectively carry the working material tape and the spare material tape, and continuous feeding without interruption is realized through alternating coil changing. However, in the current market, in the coil changing process of the unwinding device, ultrasonic sensors or photoelectric sensors are usually used to detect the coil diameter, and an algorithm is combined to trigger an automatic coil changing warning, and manual judgment is made for coil changing. Due to the accuracy error of the ultrasonic sensor and the influence of the jumping of the drum itself, it is difficult to accurately control the tail material. If the coil diameter is too large during coil changing, it will lead to too much subsequent tail material, which is easy to cause waste of manufacturing materials and waste of production costs; if the coil diameter is too small during coil changing, it will lead to too little subsequent tail material, which will cause the coil changing device to suddenly break down and affect production efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a control device for the tail material of a coil material, which has a simple structure and low maintenance cost, can accurately control the surplus of the coil material, avoid material waste and ensure production efficiency.

[0004] To achieve this purpose, the present invention adopts the following technical solutions: A control device for the tail material of a coil material includes a winding module, an unwinding module and a controller. The winding module includes a first material conveying roller, a winding drum and a labeling machine. The first material conveying roller and the winding drum are arranged in sequence along the transmission direction of the wound coil material. One end of the first material conveying roller is provided with an encoder, and the labeling machine is arranged facing the coil material on the first material conveying roller to stick a label on the coil material; the unwinding module includes an unwinding drum, a coil changing device and a first detector. The unwinding drum and the coil changing device are arranged in sequence along the transmission direction of the coil material. The first detector is arranged facing the coil material on the unwinding drum, and the first detector is used to detect the label; the controller is respectively in communication connection with the encoder, the labeling machine, the coil changing device and the first detector.

[0005] Preferably, the winding module further includes a second detector, and the second detector is located between the first material conveying roller and the winding drum and is arranged facing the coil material.

[0006] Preferably, the labeling machine is located on one side of one end of the first material conveying roller to stick the label on the edge of the coil material. The first detector is located obliquely above the unwinding drum, and the first detector and the label are on the same side of the coil material.

[0007] Preferably, the unwinding module further includes a bracket, the unwinding reel is rotatably mounted on the bracket, and the first detector is obliquely mounted on the bracket.

[0008] Preferably, the label is configured as a color mark different from the color of the coil material, and the first detector is configured as a color mark sensor.

[0009] Preferably, the outer shape of the color mark is polygonal or circular.

[0010] Preferably, the label is configured as a bar code or a two-dimensional code, and the first detector is configured as a bar code scanner.

[0011] Preferably, a second material conveying roller is provided between the first material conveying roller and the winding reel, and the coil material is tensioned between the first material conveying roller and the second material conveying roller.

[0012] Preferably, there are a plurality of the second material conveying rollers, and the plurality of second material conveying rollers are arranged in sequence along the transmission direction of the coil material.

[0013] Another object of the present invention is to provide a method for controlling the tail material of the coil material, which is simple to control, convenient to operate, can accurately control the surplus of the coil material, save production costs and improve production capacity.

[0014] To achieve this purpose, the present invention adopts the following technical solutions: a method for controlling the tail material of the coil material, which is implemented by the above-mentioned device for controlling the tail material of the coil material, and includes the following steps: detecting the tape running length through the encoder, and if the tape running length reaches a preset labeling distance, then marking a label on the coil material through the marking machine; transferring the coil material from the winding module to the unwinding module; detecting whether there is the label on the coil material through the first detector, and if so, sending a rewinding signal to the rewinding device.

[0015] Advantages of the present invention: By providing an encoder, a marking machine, and a controller, a user can preset the winding length of the coil material through the controller. The encoder can accurately detect the tape running step length on the first material conveying roller. When the running tape compensation reaches the preset winding length, the encoder feeds back the length signal to the controller, and the controller controls the marking machine to accurately mark at the preset labeling position and distance according to the signal fed back by the encoder, ensuring that the length of the coil material on the winding reel for each marking is consistent. By providing a first detector, the first detector issues a rewinding signal only after detecting the label marked by the marking machine, and the controller accurately controls the length of the coil material released by the unwinding reel each time according to the rewinding signal, thereby accurately controlling the remaining amount during subsequent coil material rewinding. This can not only avoid waste caused by excessive tail material but also prevent sudden downtime of the rewinding device, improving production efficiency. In addition, the encoder, the marking machine, and the first detector have simple structures and convenient operations, which can effectively reduce the device complexity and production costs.

[0016] The present invention also provides a method for controlling the tail material of the coil material, which uses an encoder and a marking machine to ensure the length of the coil material in the winding system, and the unwinding system starts to unwind after detecting the label, realizing precise control of the tail material, saving production costs, and improving production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the winding module of the present invention;

[0018] Figure 2 is a schematic structural diagram of the unwinding module of the present invention;

[0019] Figure 3 is a flowchart of the steps of the method for controlling the tail material of the coil material of the present invention.

[0020] In the figure: 100, winding module; 110, first material conveying roller; 120, winding reel; 130, marking machine; 140, second detector; 150, second material conveying roller; 160, encoder; 200, unwinding module; 210, bracket; 220, unwinding reel; 230, first detector. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all structures.

[0022] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0024] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0025] Refer to Figure 1 and Figure 2As shown, a waste control device for a coil material according to an embodiment of the present application includes a winding module 100, an unwinding module 200, and a controller. The winding module 100 includes a first material conveying roller 110, a winding reel 120, and a marking machine 130. The first material conveying roller 110 and the winding reel 120 are arranged in sequence along the transmission direction of the wound coil material. Optionally, the coil material includes, but is not limited to, copper foil, aluminum foil, carbon-coated aluminum foil, coated positive and negative electrode plates, etc., which will not be elaborated here. An encoder 160 is provided at one end of the first material conveying roller 110. The marking machine 130 is arranged facing the coil material on the first material conveying roller 110 to attach a label to the coil material. In this embodiment, the coil material passes through the upper surface of the first material conveying roller 110, and the marking machine 130 is correspondingly installed above the first material conveying roller 110. The unwinding module 200 includes a bracket 210, an unwinding reel 220, a reel changing device, and a first detector 230. The first detector 230 is installed and arranged facing the coil material on the unwinding reel 220. The first detector 230 is used to detect the label. Optionally, the unwinding module 200 usually includes two unwinding reels 220. If the two unwinding reels 220 alternately switch between new material and old material for unwinding, first detectors 230 are correspondingly installed on one side of each of the two unwinding reels 220, and the two first detectors 230 alternately operate for detection. If the two unwinding reels 220 unwind continuously in sequence, only the first detector 230 needs to be correspondingly installed on one side of the unwinding reel 220 at the front end in the transmission direction of the coil material. This is specifically stated here to avoid misunderstanding. The controller is communicatively connected to the encoder 160, the marking machine 130, the reel changing device, and the first detector 230 respectively. In this embodiment, the controller can be a centralized or distributed controller. For example, the controller can be a single microcontroller or composed of multiple distributed microcontrollers. A control program can run in the microcontroller to control the encoder 160, the marking machine 130, the reel changing device, and the first detector 230 to implement their functions.

[0026] It can be understood that by setting the encoder 160, the labeling machine 130, and the controller, the user can preset the winding length of the coil through the controller. The encoder 160 can accurately detect the tape running step length on the first material conveying roller 110. When the running compensation reaches the preset winding length, the encoder 160 feeds back the length signal to the controller, and the controller controls the labeling machine 130 to accurately label at the preset labeling position and distance according to the signal fed back by the encoder 160, ensuring that the coil length on the winding reel 120 for each labeling is consistent. By setting the first detector 230, the first detector 230 issues a rewinding signal only after detecting the label affixed by the labeling machine 130. The controller accurately controls the coil length released by the unwinding reel 220 each time according to the rewinding signal, and further accurately controls the remaining amount during subsequent coil rewinding, which can not only avoid waste caused by excessive tail material but also avoid sudden downtime of the rewinding device, improving production efficiency. In addition, the encoder 160, the labeling machine 130, and the first detector 230 have simple structures and convenient operations, which can effectively reduce the device complexity and production costs.

[0027] Further, a second material conveying roller 150 is provided between the first material conveying roller 110 and the winding reel 120, and the coil is tensioned between the first material conveying roller 110 and the second material conveying roller 150, that is, the first material conveying roller 110 and the second material conveying roller 150 respectively abut against both sides of the coil.

[0028] By setting the second material conveying roller 150, the first material conveying roller 110 and the second material conveying roller 150 cooperate to tension the coil, which can ensure the surface tension of the coil, avoid the labeling position deviation caused by the coil wrinkling, and affect the subsequent detection accuracy.

[0029] Still further, a plurality of second material conveying rollers 150 are provided, and the plurality of second material conveying rollers 150 are arranged in sequence along the transmission direction of the coil. The first material conveying roller 110 and the plurality of second material conveying rollers 150 are arranged staggeredly in the vertical direction.

[0030] By setting a plurality of second material conveying rollers 150, on the premise of long-distance transmission of the coil, the coil can be ensured to be flat and under tension. In addition, the user can adjust the distance a between the first material conveying roller 110 and the winding reel 120 according to the actual requirements of the winding module 100 and the overall distance of the equipment, as well as the number of the second material conveying rollers 150 between the first material conveying roller 110 and the winding reel 120, improving the practicability of the coil tail material control device.

[0031] Refer to Figure 1As shown, it can be understood that the winding module 100 further includes a second detector 140, which is located between the first material transfer roller 110 and the winding reel 120 and is arranged toward the coil. Optionally, the second detector 140 can be located above one of the second material transfer rollers 150, so that the second detector 140 is installed using the mounting frame of the second material transfer roller 150, simplifying the structure and facilitating the loading and unloading of the second detector 140.

[0032] By setting up the second detector 140, the second detector 140 can detect the label in advance before the coil is rolled onto the winding reel 120, so as to avoid the labeling machine 130 from affixing the wrong label or missing the label, realize error-proofing processing for the marking process, and avoid the subsequent first detector 230 failing to detect the label and causing the untimely roll change and other problems, thereby ensuring the accuracy of the coil tail control device.

[0033] The label is posted above the roll, and the first detector 230 is set above the winding reel 120. Although the label can be detected, when facing rolls with different roll diameters, the change in the distance between the first detector 230 and the label may affect the detection result of the first detector 230. For example, if the roll diameter is small, the first detector 230 may not detect it, and if the roll diameter is too large, the first detector 230 may not recognize it.

[0034] Reference Figure 1 and Figure 2 As shown, it can be understood that the marking machine 130 is located on one side of one end of the first feeding roller 110 to attach the label to the edge of the coil, the first detector 230 is located obliquely above the unwinding reel 220, and the first detector 230 and the label are located on the same side of the coil.

[0035] The marking machine 130 is arranged on one side of the end of the first material transfer roller 110. When the marking machine 130 is working, the label can be posted on the blank area on the edge of one side (left or right side) of the coil. Subsequently, the first detector 230 is correspondingly installed on the upper side of the unwinding reel 220. The first detector 230 can accurately detect the label at the edge of the coil in the conical area, showing the influence of coils of different diameters on the recognition accuracy of the first detector, expanding the application scope of the coil tail control device, further improving the practicability of the coil tail control device and ensuring the consistency and accuracy of the detection result of the first detector 230.

[0036] Reference Figure 2 As shown, the unwinding module 200 further includes a bracket 210 , which is in a horizontal I-shape, the unwinding reel 220 is rotatably mounted on the bracket 210 , and the first detector 230 is obliquely mounted on the top of one side of the bracket 210 .

[0037] Integrate the first detector 230 on the bracket 210 of the unwinding reel 220, eliminating the need for an additional support mounting structure and improving the integration degree of the unwinding module 200.

[0038] Furthermore, the label is configured as a color mark different from the color of the coil material, and the first detector 230 is configured as a color mark sensor.

[0039] Configuring the label as a color mark, on the one hand, the color of the color mark is different from that of the coil material, which can ensure the distinguishability between the color mark and the coil material and facilitate the identification by the color mark sensor; on the other hand, it can simplify the label structure and reduce the label manufacturing cost.

[0040] Among them, the outer shape of the color mark is polygonal or circular. Exemplarily, the outer shape of the color mark can be set as a rectangle, trapezoid, triangle, etc., which will not be elaborated here.

[0041] Setting the color mark as polygonal or circular can further improve the distinguishability between the color mark and the coil material, facilitate the accurate identification by the color mark sensor, and further improve the accuracy of the detection results of the first detector 230 and the second detector 140.

[0042] In some other embodiments, the label is configured as a bar code or a two-dimensional code, and the first detector 230 is configured as a bar code scanner.

[0043] Configuring the label as a bar code or a two-dimensional code, the user can write the physical information of the coil material, such as material, length, width, etc., in the bar code or two-dimensional code. Subsequently, the bar code scanner can identify the label and read the information in the bar code or two-dimensional code, facilitating the user's subsequent management and use of the coil material and improving the user experience.

[0044] Refer to Figure 3 As shown, a method for controlling the tail material of a coil material according to an embodiment of the present application includes the following steps:

[0045] S100, detect the tape running length through the encoder 160. If the tape running length reaches the preset labeling distance, then label the coil material through the labeling machine 130;

[0046] S200, transfer the coil material from the rewinding module 100 to the unwinding module 200;

[0047] S300, detect whether there is a label on the coil material through the first detector 230. If so, send a roll change signal to the roll change device.

[0048] It can be understood that the above steps are all executed by the controller. The controller ensures the coil material length of the winding system through the cooperation of the encoder 160 and the labeling machine 130, and then unwinds after the unwinding system detects the label, realizing precise control of the tail material, saving production costs and improving production capacity.

[0049] Further, before step S200, the following steps are further included:

[0050] S210, detect whether there is a label on the coil by the second detector 140. If so, transfer the coil from the rewinding module 100 to the unwinding module 200.

[0051] Detecting the label by the second detector 140 realizes the anti-mistake processing for labeling, avoids missing or misplacing the label, and ensures the continuity of the subsequent operation of the unwinding reel 220.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Coil tailstock control device, characterized in that, Comprising: A winding module (100), including a first material conveying roller (110), a winding reel (120) and a labeling machine (130). The first material conveying roller (110) and the winding reel (120) are arranged in sequence along the conveying direction of the wound coil material. One end of the first material conveying roller (110) is provided with an encoder (160). The labeling machine (130) is arranged facing the coil material on the first material conveying roller (110) to stick a label on the coil material. An unwinding module (200), including an unwinding reel (220), a reel changing device and a first detector (230). The unwinding reel (220) and the reel changing device are arranged in sequence along the conveying direction of the coil material. The first detector (230) is arranged facing the coil material on the unwinding reel (220), and the first detector (230) is used to detect the label. A controller, which is communicatively connected to the encoder (160), the labeling machine (130), the reel changing device and the first detector (230) respectively.

2. The coiled material tail control device according to claim 1, characterized in that The winding module (100) further includes a second detector (140), and the second detector (140) is located between the first material conveying roller (110) and the winding reel (120) and is arranged facing the coil material.

3. The coiled material tailstock control device according to claim 1, wherein The labeling machine (130) is located on one side of one end of the first material conveying roller (110) to stick the label on the edge of the coil material. The first detector (230) is located obliquely above the unwinding reel (220), and the first detector (230) and the label are on the same side of the coil material.

4. The coiled material tailstock control device according to claim 3, characterized in that, The unwinding module (200) further includes a bracket (210). The unwinding reel (220) is rotatably installed on the bracket (210), and the first detector (230) is obliquely installed on the bracket (210).

5. The coiled material tailstock control device according to any one of claims 1-4, characterized in that The label is configured as a color mark different from the color of the coil material, and the first detector (230) is configured as a color mark sensor.

6. The coiled material tailstock control device according to claim 5, wherein The outer shape of the color mark is polygonal or circular.

7. The coil tailstock control device according to any one of claims 1-4, characterized in that, The label is configured as a bar code or a two-dimensional code, and the first detector (230) is configured as a bar code scanner.

8. The coiled material tailstock control device according to claim 1 or 2, characterized in that, A second material conveying roller (150) is provided between the first material conveying roller (110) and the winding reel (120), and the coil material is tensioned between the first material conveying roller (110) and the second material conveying roller (150).

9. The coiled material tailstock control device according to claim 8, characterized in that, There are multiple second material conveying rollers (150), and the multiple second material conveying rollers (150) are arranged in sequence along the conveying direction of the coil material.

10. A method for controlling the tail material of a coil, which is implemented by the coil tail material control device according to any one of claims 1-9, characterized in that, Including the following steps: Detect the tape running length through the encoder (160). If the tape running length reaches a preset labeling distance, then use the labeling machine (130) to label the coil material. Transfer the coil material from the winding module (100) to the unwinding module (200). Detect whether there is the label on the coil material through the first detector (230). If so, send a reel changing signal to the reel changing device.

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