Adhesive tape sticking missing detection device and winding machine

Abstract

The utility model relates to the technical field of battery manufacturing, in particular to an adhesive tape missing sticking detection device and a winding machine, and the adhesive tape missing sticking detection device comprises a base, a lifting mechanism, a driving mechanism, a blowing nozzle and a contact type sensor. When the lifting mechanism lifts the roll core, the driving mechanism drives the roll core to rotate, the blowing nozzle blows compressed air to the roll core in a rotating state, and when adhesive tape is not pasted at one end or two ends of the roll core, the compressed air acts on the diaphragm on the outermost layer of the roll core, so that the diaphragm on the outermost layer of the roll core is not attached to the secondary outer layer pole piece any more; the adhesive tape is attached to the contact type sensor, so that the contact type sensor generates a response, whether the adhesive tape is not attached to one end or two ends of the roll core or not is judged, and the risk that the bad roll core flows into the subsequent processing technology is reduced. The situation of missing detection due to the fact that the adhesive tape is transparent is avoided, and the reliability of a detection result is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a tape leakage detection device and a winding machine. Background Art

[0002] During the production process of cylindrical batteries, the positive electrode sheet, negative electrode sheet and separator need to be wound with a winding machine to form the core of the cylindrical battery. After winding, a circle of tape needs to be wrapped around the opposite ends of the core to prevent the core from loosening. In actual production, there is a situation where one end of the core is missing the tape. Therefore, how to detect the missing tape on the core has become a technical problem that needs to be solved urgently by technicians in this field. Utility Model Content

[0003] The utility model provides a tape missing detection device and a winding machine, which are used to solve the problem of how to detect the missing of the tape on the winding core.

[0004] On the one hand, the utility model provides a tape missing detection device, comprising:

[0005] Pedestal;

[0006] A lifting mechanism, installed on the base, for lifting the winding core of the cylindrical battery;

[0007] A driving mechanism, mounted on the base, for driving the winding core to rotate around its own axis;

[0008] The blowing nozzle is installed on the lifting mechanism and is used to blow air to the winding core;

[0009] Contact sensor, installed on the lifting mechanism;

[0010] When the lifting mechanism lifts the winding core, the driving mechanism drives the winding core to rotate, and the blowing nozzle blows gas to the rotating winding core, so that the diaphragm of the winding core is attached to the contact sensor, thereby causing the contact sensor to respond.

[0011] In some embodiments, the lifting mechanism includes:

[0012] There are two lifting arms, and the tops are slidably installed on the base respectively; when the two lifting arms slide towards each other, they can lift the winding core; when the two lifting arms move away from each other, they can release the winding core.

[0013] In some of the embodiments, a follower wheel is provided at the bottom of each lifting arm;

[0014] When the two lifting arms lift the winding core, the side wall of the follower wheel fits with the side wall of the winding core, and the follower wheel rotates with the winding core.

[0015] In some embodiments, the lifting mechanism further comprises:

[0016] The first driver is installed on the base, and the output shaft is respectively connected with the two lifting arms, so as to drive the two lifting arms to slide toward each other or away from each other.

[0017] In some of the embodiments, an air blowing nozzle and a contact sensor are respectively installed at opposite ends of one of the lifting arms.

[0018] In some embodiments, the driving mechanism comprises:

[0019] The driving roller is rotatably mounted on the base; when the lifting mechanism lifts the winding core, the side wall of the driving roller fits with the side wall of the winding core to drive the winding core to rotate.

[0020] In some embodiments, the driving mechanism further comprises:

[0021] The second driver is installed on the base, and the output shaft is connected to one end of the driving roller to drive the driving roller to rotate.

[0022] In some of the embodiments, the base can move up and down to drive the lifting mechanism, the driving mechanism, the blowing nozzle, the contact sensor and the winding core to move up and down.

[0023] In some embodiments, it also includes:

[0024] The third driver has an output shaft connected to the base and is used to drive the base to move up and down.

[0025] On the other hand, the utility model further provides a winding machine, comprising a feed conveying mechanism and a tape missing detection device provided by any of the above embodiments; the tape missing detection device is installed on the feed conveying mechanism.

[0026] The beneficial effects of the utility model are as follows: the utility model of the adhesive tape missing detection device is provided with a lifting mechanism, and the lifting mechanism can lift the core. When the lifting mechanism lifts the core, the driving mechanism drives the core to rotate, and the compressed gas is blown from the blowing nozzle to the rotating core. When one or both ends of the core are missing the tape, the compressed air acts on the outermost diaphragm of the core, so that the outermost diaphragm of the core and the second outermost electrode are no longer attached, but attached to the contact sensor, and then the contact sensor responds, thereby judging whether one or both ends of the core are missing the tape, reducing the risk of defective cores flowing into subsequent processing. Compared with the form of using color sensor detection or visual detection, there will be no missed detection due to the transparent color of the tape, which ensures the reliability of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of some specific embodiments of a device for detecting tape leakage of the utility model;

[0028] Figure 2 yes Figure 1 A schematic structural diagram of the tape missing detection device from another perspective shown;

[0029] Figure 3 yes Figure 1 The schematic diagram of the tape missing detection device before lifting the tape core;

[0030] Figure 4 yes Figure 1 The schematic diagram of the tape missing detection device when lifting the tape core is shown.

[0031] In the accompanying drawings, 110, base; 120, lifting mechanism; 121, lifting arm; 1211, follower wheel; 130, driving mechanism; 131, driving roller; 140, blowing nozzle; 150, contact sensor; 200, winding core; 210, diaphragm; 300, tape; 400, unloading conveying mechanism. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] As mentioned in the background technology, usually, during the production process of cylindrical batteries, a winding machine is required to wind the positive electrode sheet, negative electrode sheet and separator to form the core of the cylindrical battery. After winding, a circle of tape needs to be wrapped around the opposite ends of the core to prevent the core from loosening. In actual production, there is a situation where one end of the core is missing the tape. Therefore, how to detect the missing tape on the core has become a technical problem that needs to be solved urgently by technicians in this field.

[0034] To solve the above problems, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a tape leakage detection device, including a base 110, a lifting mechanism 120, a driving mechanism 130, an air blowing nozzle 140 and a contact sensor 150. The base 110 is used to install and support the lifting mechanism 120, the driving mechanism 130, the air blowing nozzle 140 and the contact sensor 150. The lifting mechanism 120 is installed on the base 110, and is used to lift the winding core 200 of the cylindrical battery. The driving mechanism 130 is installed on the base 110, and is used to drive the winding core 200 to rotate around its own axis. The air blowing nozzle 140 is installed on the lifting mechanism 120, connected to the compressed air source, and the compressed air is blown to the winding core 200 by the air blowing nozzle. The contact sensor 150 is installed on the lifting mechanism 120.

[0035] It should be noted that Figure 3 and Figure 4 One end of the middle core 200 is missing the tape 300, while the other end is pasted with a circle of tape 300. In fact, in production, it is also possible that the tape 300 is missing from both ends of the core 200. After the positive electrode sheet, the negative electrode sheet and the diaphragm 210 are wound by the winding machine to form the core 200 and pasted with the tape 300, the unloading conveying mechanism 400 conveys the core 200 away from the winding and gluing station. During the unloading process, the lifting mechanism 120 can lift the core 200. When the lifting mechanism 120 lifts the core 200, the driving mechanism 130 drives the core 200 to rotate, and the compressed gas is blown from the blowing nozzle to the rotating core 200, such as Figure 4 As shown, when one or both ends of the core 200 are missing the tape 300, compressed air acts on the outermost diaphragm 210 of the core 200, so that the outermost diaphragm 210 of the core 200 is no longer in contact with the second outermost electrode piece, but attached to the contact sensor 150, thereby causing the contact sensor 150 to respond, thereby determining whether one or both ends of the core 200 are missing the tape 300, thereby reducing the risk of defective cores 200 flowing into subsequent processing techniques. Compared with the use of color sensor detection or visual detection, there will be no missed detection due to the transparent tape 300, thereby ensuring the reliability of the detection result.

[0036] Specifically, in the exemplary embodiment, the base 110 includes a horizontal plate and a vertical plate. The bottom end of the vertical plate is fixedly connected to one end of the horizontal plate to form the base 110 in an "L" shape as a whole.

[0037] Specifically, in the exemplary embodiment, the blowing nozzle 140 is in an arc-shaped structure as a whole, so as to blow compressed air toward the winding core 200 .

[0038] Specifically, in the exemplary embodiment, the contact sensor 150 may be a capacitive trigger sensor. When the membrane 210 of the core 200 approaches the electrode of the sensor, the capacitance increases and causes a voltage change, thereby generating a signal output, which has the characteristics of high sensitivity and fast response speed. The contact sensor 150 may also be a resistive touch sensor. When the membrane 210 of the core 200 approaches the electrode of the sensor, the resistance decreases and causes a current change, thereby generating a signal output, which has the characteristics of being simple, practical and inexpensive. The contact sensor 150 may also be a mechanical contact sensor. When the membrane 210 of the core 200 applies pressure to the contact of the sensor, the mechanical structure deforms and generates a signal output, which has the characteristics of simple structure and high precision. Of course, the contact sensor 150 may also be a magnetic contact sensor 150 or an infrared contact sensor 150, etc.

[0039] Specifically, in the exemplary embodiment, the lifting mechanism 120 includes two lifting arms 121 and two first drivers. The tops of the two lifting arms 121 are slidably mounted on the tops of the horizontal plates of the base 110. When the two lifting arms 121 slide toward each other, the bottoms of the two lifting arms 121 can cooperate to lift the winding core 200. When the two lifting arms 121 move in opposite directions, the winding core 200 can be released from the bottoms of the two lifting arms 121. The two first drivers are respectively mounted on the tops of the horizontal plates of the base 110, and the output shafts face opposite directions. The output shafts of the two first drivers are fixedly connected to the tops of the two lifting arms 121 in a one-to-one correspondence, and are respectively used to drive the corresponding lifting arms 121 to move, thereby causing the two lifting arms 121 to slide toward each other or in opposite directions. Compared with the human-driven method, the lifting and releasing efficiency is greatly improved, thereby improving the detection efficiency.

[0040] Preferably, the first driver can be a servo electric cylinder, which has higher control accuracy and ensures that the lifting force on both sides is basically the same. The first driver can also be an electric push rod, which can control the thrust and speed by adjusting the pitch, and can achieve very precise positioning and motion control. It does not require the use of liquid or gas and other working fluids during operation, so there will be no problem of hydraulic oil or gas leakage polluting the working environment, and the environmental protection performance is better. At the same time, it is easy to install and has low maintenance costs. Of course, the first driver can also be a hydraulic cylinder or a pneumatic cylinder, which has a relatively stable power output, a faster action, strong reliability, a simple structure, and a low maintenance cost.

[0041] Preferably, each lifting arm 121 includes a moving seat, two vertical beams and two horizontal beams. The moving seat is slidably mounted on the top of the horizontal plate of the base 110 and is fixedly connected to an output shaft of a first driver. The top ends of the two vertical beams are fixedly connected to the opposite ends of the moving seat respectively. One end of the two horizontal beams is fixedly connected to the bottom ends of the two vertical beams in a one-to-one correspondence.

[0042] Preferably, a guide rail is provided on the top of the horizontal plate of the base 110. A guide groove adapted to the guide rail is provided on the bottom surface of the moving seat of the lifting arm 121 to improve the smoothness of the movement of the moving seat and the lifting arm 121, thereby improving the lifting and releasing efficiency of the winding core 200.

[0043] Preferably, a follower wheel 1211 is provided at the bottom of each lifting arm 121. It should be noted that a rotatable follower wheel 1211 is installed at one end of each cross beam away from the vertical beam. When the bottom of the two lifting arms 121 lift the winding core 200, the side walls of the follower wheels 1211 on the two cross beams are respectively in contact with the side walls at the opposite ends of the winding core 200, and the follower wheels 1211 on the two cross beams rotate with the winding core 200. In this way, the wear of the lifting arm 121 on the winding core 200 when the winding core 200 rotates is greatly reduced, thereby protecting the winding core 200.

[0044] Preferably, a blowing nozzle 140 and a contact sensor 150 are respectively installed on two vertical beams at opposite ends of one of the lifting arms 121, so as to detect whether there is a problem of missing tape 300 at both ends of the winding core 200. Each contact sensor 150 is installed at the lower part of a vertical beam through a first fixing seat. The contact sensor 150 is located above the follower wheel 1211 and below the blowing nozzle 140.

[0045] Specifically, in the exemplary embodiment, the driving mechanism 130 includes two second fixed seats, a driving roller 131 and a second driver. The two second fixed seats are fixedly mounted on the opposite ends of the horizontal plate of the base 110. The opposite ends of the driving roller 131 are rotatably mounted on the second fixed seats at both ends through bearings. When the two lifting arms 121 of the lifting mechanism 120 cooperate to lift the winding core 200, the side wall of the driving roller 131 fits with the side wall of the winding core 200 to drive the winding core 200 to rotate. The second driver is fixedly mounted on one of the second fixed seats, and the output shaft is connected to one end of the driving roller 131 to drive the driving roller 131 to rotate, which improves the detection efficiency compared to the manual drive form.

[0046] Preferably, the second driver can be a stepper motor, which is cheap and has low cost. The second driver can also be a servo motor, which has high running stability, stable torque output and high control accuracy.

[0047] Preferably, the base 110 can move up and down to drive the lifting mechanism 120, the driving mechanism 130, the blowing nozzle 140, the contact sensor 150 and the winding core 200 to move up and down. The tape leakage detection device also includes a third driver, the shell of the third driver is installed on the frame of the unloading conveying mechanism 400, and the output shaft is arranged upward. The output shaft of the third driver is connected to the base 110, which is used to drive the base 110 to move up and down. Compared with the form of driving the base 110 to rise and fall by manpower, the detection efficiency is improved. The third driver can be a servo electric cylinder, and the servo electric cylinder has higher control accuracy. The third driver can also be an electric push rod, which can control the thrust and speed by adjusting the pitch, and can achieve very precise positioning and motion control. There is no need to use liquid or gas or other working fluids during work, so there will be no problem of hydraulic oil or gas leakage polluting the working environment, and the environmental protection performance is better. At the same time, it is easy to install and the maintenance cost is also low. Of course, the third driver can also be a hydraulic cylinder or a cylinder, the power output is relatively stable, the action occurs faster, the reliability is strong, the structure is simple, and the maintenance cost is low.

[0048] The working process and principle of the tape missing detection device are as follows: the unloading conveying mechanism 400 conveys the core 200 away from the winding and gluing station. When the core 200 moves to the bottom of the tape missing detection device, Figure 3 As shown, the third driver drives the base 110 to move downward, and drives the lifting mechanism 120 and the driving mechanism 130 to move downward. Then, the two first drivers drive the two lifting arms 121 to move toward each other, and the bottoms of the two lifting arms 121 cooperate to lift the winding core 200. Afterwards, the third driver drives the base 110 to move upward, as shown in FIG. Figure 4 As shown, the lifting mechanism 120 and the driving mechanism 130 are driven to move upward. Then, the second driver drives the driving roller 131 to rotate in the clockwise direction, driving the core 200 to rotate in the counterclockwise direction. During the rotation of the core 200, the compressed gas is blown from the blowing nozzle to the rotating core 200. When one or both ends of the core 200 are missing the tape 300, the compressed air acts on the outermost diaphragm 210 of the core 200, so that the outermost diaphragm 210 of the core 200 is no longer in contact with the second outermost pole piece, but is attached to the contact sensor 150, thereby causing the contact sensor 150 to respond, thereby determining whether one or both ends of the core 200 are missing the tape 300.

[0049] On the other hand, the utility model also provides a winding machine, comprising a feed conveying mechanism 400 and a tape leakage detection device provided by any of the above embodiments. The tape leakage detection device is installed on the top of the feed conveying mechanism 400. The feed conveying mechanism 400 includes a conveyor belt, on which a core 200 support seat is fixedly mounted. A core 200 receiving groove for accommodating the core 200 is provided at the top of the core 200 support seat. When the core 200 moves with the core 200 support seat to the bottom of the tape leakage detection device, the tape leakage detection device starts to work. When the lifting mechanism 120 lifts the core 200, the driving mechanism 130 drives the core 200 to rotate, and the compressed gas is blown from the blowing nozzle to the rotating core 200. When one or both ends of the core 200 are missing the tape 300, the compressed air acts on the outermost diaphragm 210 of the core 200, so that the outermost diaphragm 210 of the core 200 is no longer in contact with the second outermost electrode piece, but attached to the contact sensor 150, thereby causing the contact sensor 150 to respond, thereby determining whether one or both ends of the core 200 are missing the tape 300, thereby reducing the risk of defective cores 200 flowing into subsequent processing techniques. Compared with the use of color sensor detection or visual detection, there will be no missed detection due to the transparent tape 300, thereby ensuring the reliability of the detection result.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A device for detecting tape leakage, characterized in that: include: Pedestal; A lifting mechanism, mounted on the base, for lifting the winding core of the cylindrical battery; A driving mechanism, mounted on the base, for driving the winding core to rotate around its own axis; An air blowing nozzle, installed on the lifting mechanism, for blowing air toward the winding core; A contact sensor is installed on the lifting mechanism; When the lifting mechanism lifts the winding core, the driving mechanism drives the winding core to rotate, and the blowing nozzle blows gas to the rotating winding core, so that the diaphragm of the winding core is attached to the contact sensor, thereby causing the contact sensor to respond.

2. The tape missing detection device according to claim 1, characterized in that: The lifting mechanism comprises: There are two lifting arms, and the tops are slidably installed on the base respectively; when the two lifting arms slide towards each other, they can lift the winding core; when the two lifting arms move away from each other, they can release the winding core.

3. The tape missing detection device according to claim 2, characterized in that: A follower wheel is arranged at the bottom of each lifting arm; When the two lifting arms lift the winding core, the side wall of the follower wheel fits with the side wall of the winding core, and the follower wheel rotates with the winding core.

4. The tape missing detection device according to claim 2, characterized in that: The lifting mechanism also includes: The first driver is installed on the base, and the output shaft is respectively connected with the two lifting arms, so as to drive the two lifting arms to slide toward each other or away from each other.

5. The tape missing detection device according to claim 2, characterized in that: The blowing nozzle and the contact sensor are respectively installed at opposite ends of one of the lifting arms.

6. The tape missing detection device according to any one of claims 1 to 5, characterized in that: The driving mechanism comprises: The driving roller is rotatably mounted on the base; when the lifting mechanism lifts the winding core, the side wall of the driving roller fits with the side wall of the winding core to drive the winding core to rotate.

7. The tape missing detection device according to claim 6, characterized in that: The driving mechanism further comprises: The second driver is installed on the base, and the output shaft is connected to one end of the driving roller, so as to drive the driving roller to rotate.

8. The tape missing detection device according to any one of claims 1 to 5, characterized in that: The base can move up and down to drive the lifting mechanism, the driving mechanism, the air blowing nozzle, the contact sensor and the winding core to move up and down.

9. The tape missing detection device according to claim 8, characterized in that: Also includes: The third driver has an output shaft connected to the base and is used to drive the base to move up and down.

10. A winding machine, characterized in that: It comprises a material unloading conveying mechanism and the tape missing detection device according to any one of claims 1 to 9; the tape missing detection device is installed on the material unloading conveying mechanism.

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