Online contour detection deviation rectifying device

Abstract

The utility model is suitable for the field of lithium battery manufacturing, and discloses an on-line contour detection and deviation correction device which comprises a rack, a detection system and a floating roller assembly, the floating roller assembly comprises a roller arranged in the width direction of the base material, a swing core unit for installing the two ends of the roller in a center-adjustable mode, and an adjusting unit for driving the swing core unit to adjust the relative height of the two ends of the roller. The collapse degree data is detected, the floating roller assembly adjusts the tension of the base material in the width direction according to the collapse degree data, the base material deforms due to different stress on the two sides, the deformation can generate stretching force on the base material in the width direction, collapse of the base material in the width direction is corrected, collapse of the base material is reduced, and the service life of the base material is prolonged. The production quality of the pole piece is improved.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery manufacturing, in particular to an on-line profile detection and deviation correction device. Background Art

[0002] Lithium-ion batteries are widely used in various consumer electronic products, various electric vehicles, and energy storage devices such as wind energy and solar energy because of their high energy density, long cycle life, excellent mechanical properties, and environmental friendliness. The preparation of lithium battery electrodes is the most basic and important link in the lithium battery industry. In order to improve the quality of electrode manufacturing and prevent problems in the aluminum foil and copper foil themselves from affecting the preparation of electrodes, the use of a tension machine has been introduced in the prior art. The prior art can detect the edge collapse of the aluminum foil and copper foil through the tension machine, and detect the unevenness of the surface of the substrate when it moves on the idler roller with a certain tension, so as to remove the unqualified parts to improve the quality and efficiency of electrode preparation.

[0003] However, the detection by the tension machine belongs to off-line detection, and off-line detection requires additional time consumption, which affects the production efficiency. In addition, the off-line detection by the tension machine only detects the unwinding and winding, and adjusts the tension in the length direction of the substrate. It is impossible to effectively reduce the collapse in the width direction of the substrate by adjusting the tension in the length direction of the substrate. After the product enters the coating process, there is no treatment method for unqualified samples (samples with excessive width collapse), which seriously affects the shipping quality. There is a lack of detection of defects in the width direction of the aluminum foil and copper foil in the prior art, and there is also a lack of the ability to repair defects in the width direction. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an on-line profile detection and deviation correction device, aiming to solve the problem that the defects of aluminum foil and copper foil in the width direction cannot be detected and repaired in the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems includes: a frame, a detection system, and a floating roller assembly; the detection system and the floating roller assembly are arranged on the frame along the length direction of the substrate; the floating roller assembly includes a roller arranged along the width direction of the substrate, a swing core unit for the two ends of the roller to be installed with adjustable centering, and an adjustment unit for driving the swing core unit to adjust the relative height of the two ends of the roller. The adjustment unit includes a guide plate with two ends respectively connected to the swing core unit, a driving mechanism installed on the frame, and a contact member driven by the driving mechanism to move in the width direction and abut against the top surface of the guide plate. The top surface of the guide plate in contact with the contact member is an inclined surface inclined in the width direction; the detection system is used to detect the collapse degree data of the substrate; the floating roller assembly is used to adjust the tension in the width direction of the substrate according to the collapse degree data.

[0006] In some embodiments, the adjustment unit includes a guiding assembly connected to the pendulum core unit and guiding the movement of the pendulum core unit in the vertical direction.

[0007] In some embodiments, the guiding assembly includes a slider fixedly connected to the pendulum core unit, and a slide rail vertically and fixedly arranged on the frame and allowing the slider to slide thereon.

[0008] In some embodiments, a self-aligning bearing is provided in the pendulum core unit, and the self-aligning bearing can adapt to radial forces to form a certain deflection angle for connection with the roller.

[0009] In some embodiments, the driving mechanism includes a first motor horizontally arranged on the frame, a conversion unit connected to the output shaft of the first motor to convert the motor rotation into horizontal movement, and a horizontal guiding mechanism guiding the horizontal movement of the output end of the conversion unit; the output end of the conversion unit is connected to the abutting member; alternatively, the driving mechanism includes a linear motor horizontally arranged on the frame, and a horizontal guiding mechanism connected to the output end of the linear motor, and the abutting member is connected to the output end of the linear motor.

[0010] In some embodiments, the top surface of the guiding plate is an inclined surface, and the slope of the guiding plate is between 3° and 10°.

[0011] In some embodiments, the abutting member is a cam follower.

[0012] In some embodiments, the adjustment unit further includes an elastic reset mechanism, and the elastic reset mechanism is elastically connected to and supports the pendulum core unit.

[0013] In some embodiments, the detection system includes a lateral detection sensor fixed on one side of the base material, a transverse movement unit arranged above the base material, and a longitudinal detection sensor arranged on the transverse movement unit. The lateral detection sensor is used to detect the position information of the base material collapse, and the longitudinal detection sensor is used to detect the depth information of the base material collapse.

[0014] In some embodiments, the transverse movement unit includes a second motor arranged on the frame, a lateral guide rail arranged on the frame, and a synchronous belt connecting the output end of the second motor and the longitudinal detection sensor. The longitudinal detection sensor is arranged on the lateral guide rail.

[0015] Implementing the present utility model has the following beneficial effects: The detection system first detects the collapse of the substrate being transported online, detects the collapse degree data, and then the floating roller assembly adjusts the tension in the width direction of the substrate according to the collapse degree data. Since the two sides of the substrate are stressed differently, deformation occurs, and the deformation will generate a tensile force on the substrate in the width direction, correcting the collapse of the substrate in the width direction, reducing the collapse of the substrate, and improving the production quality of the pole piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the present utility model, the present utility model will be further described below in conjunction with the drawings and embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings. In the drawings:

[0017] Figure 1 is the front structure diagram of an online profile detection and deviation correction device in some embodiments of the present utility model;

[0018] Figure 2 is the back structure diagram of an online profile detection and deviation correction device in some embodiments of the present utility model.

[0019] Reference Signs in the Drawings

[0020] 100, substrate; 200, frame; 300, lateral detection sensor; 310, longitudinal detection sensor; 320, second motor; 330, synchronous belt; 340, lateral guide rail; 400, roller; 410, swing core unit; 411, aligning bearing; 412, first elastic member; 413, second elastic member; 420, adjustment unit; 421, guide plate; 422, abutting member; 423, conversion unit; 424, coupling; 425, first motor; 428, slide rail; 429, slider. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to have a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific embodiments of the present utility model will now be described in detail with reference to the drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings, with a specific orientation structure and operation, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0022] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "connection", "attachment", "fixation", "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. When a component is referred to as "above" or "below" another component, the component can be "directly" or "indirectly" located above the other component, or there may also be one or more intermediate components. The terms "first", "second", "third", etc. are only for the convenience of describing the technical solution and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", etc. can explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Figures 1 to 2An on-line profile detection and deviation correction device in an embodiment of the present utility model is shown. This on-line profile detection and deviation correction device can be used to detect the collapse of a substrate 100 being transported on-line, and adjust the tension of the substrate 100 in the width direction through a floating roller assembly, so as to correct the collapse of the substrate 100 in the width direction. The on-line detection and deviation correction device includes: a frame 200, a detection system, and a floating roller assembly; the detection system and the floating roller assembly are arranged on the frame 200 along the length direction of the substrate 100; the floating roller assembly includes a roller 400 arranged along the width direction of the substrate 100, a swing core unit 410 for the two ends of the roller 400 to be installed with adjustable centering, and an adjustment unit 420 for driving the swing core unit 410 to adjust the relative height of the two ends of the roller 400. The adjustment unit 420 includes a guide plate 421 with two ends respectively connected to the swing core unit 410, a driving mechanism installed on the frame 200, and a contact member 422 driven by the driving mechanism to move in the width direction and abut against the top surface of the guide plate 421. The top surface of the guide plate 421 in contact with the contact member 422 is an inclined surface inclined in the width direction; the detection system is used to detect the collapse degree data of the substrate 100; the floating roller assembly is used to adjust the tension of the substrate 100 in the width direction according to the collapse degree data. The detection system first detects the collapse of the substrate 100 being transported on-line, detects the collapse degree data, and then the floating roller assembly adjusts the tension of the substrate 100 in the width direction according to the collapse degree data. The substrate 100 deforms due to different forces on both sides, and the deformation will generate a tensile force on the substrate 100 in the width direction, so as to correct the collapse of the substrate 100 in the width direction, reduce the collapse of the substrate 100, and improve the production quality of the pole piece.

[0024] It can be understood that when the contact member 422 abuts against the top surface of the guide plate 421, when the driving mechanism drives the contact member 422 to approach one end of the guide plate 421, according to the principle of moment, the contact member 422 applies a greater force to the end close to the guide plate 421 than the other end, and the direction of this force is downward, so that the end of the contact member 422 close to it is more stressed than the end far from the contact member 422. The distance that the end of the roller 400 close to the contact member 422 presses down on the substrate 100 is more than that of the end far from the contact member 422, the roller 400 tilts, and the substrate 100 in contact with the roller 400 also tilts and deforms. The substrate 100 deforms in the width direction, eliminating the collapse of the substrate 100 in the width.

[0025] Figures 1 to 2 It is shown that in some embodiments, the adjustment unit 420 may include a guiding assembly connected to the swing core unit 410 and guiding the swing core unit 410 to move in the vertical direction. The guiding assembly can limit the swing core unit 410 to move vertically only in the up and down directions.

[0026] Figure 2 It shows that in some embodiments, the guiding assembly may include a slider 429 fixedly connected to the pendulum core unit 410, and a slide rail 428 vertically and fixedly arranged on the frame 200 for the slider 429 to slide thereon. The slider 429 and the slide rail 428 are relatively closely matched, so that there is no extra space for the pendulum core unit 410 to displace, and the friction coefficient between the slider 429 and the slide rail 428 is small, so that when the pendulum core unit 410 is affected by other external forces, no large frictional force will be generated to affect the movement of the pendulum core unit 410.

[0027] Figure 2 It shows that in some embodiments, the pendulum core unit 410 may include a self-aligning bearing 411 provided in the pendulum core unit 410. The self-aligning bearing 411 can adapt to radial forces to form a certain deflection angle to connect with the roller 400. The self-aligning bearing 411 can adapt to radial forces to form a certain deflection angle. When the roller 400 is inclined, the roller 400 forms a certain angle with the self-aligning bearing 411, and the roller 400 can still be movably connected to the self-aligning bearing 411.

[0028] Figure 2 It shows that in some embodiments, the driving mechanism may include a first motor 425 horizontally arranged on the frame 200, a conversion unit 423 connected to the output shaft of the first motor 425 to convert the motor rotation into a horizontal movement, and a horizontal guiding mechanism for guiding the horizontal movement of the output end of the conversion unit 423; the output end of the conversion unit 423 is connected to the abutting member 422; alternatively, the driving mechanism includes a linear motor horizontally arranged on the frame 200 and a horizontal guiding mechanism connected to the output end of the linear motor, and the abutting member 422 is connected to the output end of the linear motor. The rotation of the output shaft of the first motor 425 is converted into a linear motion through the conversion unit 423, and the horizontal guiding mechanism restricts the movement direction of the conversion unit 423, so that the conversion unit 423 can only move horizontally, ensuring that the abutting member 422 can only move horizontally, and the movement trajectory of the abutting member 422 abuts against the guiding plate 421.

[0029] Figure 2 It shows that in some embodiments, the first motor 425 may be driven by a servo motor, and the servo motor can accurately control the actual output distance, and thus accurately control the relative height of the roller 400.

[0030] In one embodiment, the driving mechanism includes a linear motor horizontally arranged on the frame 200 and a horizontal guiding mechanism connected to the output end of the linear motor. The abutting member 422 is connected to the output end of the linear motor, and the linear motor is connected to the abutting member 422 to directly output the actual horizontal movement distance without conversion.

[0031] Figure 2 It is shown that in some embodiments, the guiding plate 421 may include that the top surface of the guiding plate 421 is an inclined surface, and the slope of the guiding plate 421 is between 3° and 10°. When the abutting member 422 reaches the high point and the low point of the inclined surface, the guiding plate 421 will rise and fall more greatly, causing the roller 400 to rise and fall a greater distance, and the substrate 100 to tilt and deform more greatly, which is beneficial to eliminating the collapse on the width of the substrate 100; Understandably, the slope of the inclined plate is positively correlated with the displacement and force of the abutting member 422.

[0032] Figure 2 It is shown that in some embodiments, the abutting member 422 may include that the abutting member 422 is a cam follower bearing. Through the cam bearing, the friction between the abutting member 422 and the guiding plate 421 is greatly reduced, the damage to the guiding plate 421 and the abutting member 422 is reduced, and the service life is greatly improved.

[0033] Figure 2 It is shown that in some embodiments, the adjusting unit 420 may include that the adjusting unit 420 further includes an elastic reset mechanism, and the elastic reset mechanism is elastically connected to the swing core unit 410 and supports the swing core unit 410. The elastic reset mechanism includes a connecting member fixedly connected to the swing core unit 410, a first elastic member 412 and a second elastic member 413 respectively connected to the upper and lower ends of the connecting member. The two ends of the first elastic member 412 and the second elastic member 413 far away from the swing core unit 410 are respectively fixed on the frame 200. The upper end of the second elastic member 413 is connected to the swing core unit 410, and the lower end is connected to the frame 200. The second elastic member 413 mainly plays a supporting role for the swing core assembly. The lower end of the first elastic member 412 is connected to the swing core unit 410, and the upper end is connected to the frame 200. The first elastic member 412 mainly plays a limiting role for the swing core unit 410 to prevent the swing core unit 410 from generating an upward impact and damaging other components when the downward pressure of the guiding plate 421 disappears.

[0034] Figure 1 It is shown that in some embodiments, the detection system may include a lateral detection sensor 300 fixed on one side of the substrate 100, a transverse movement unit arranged above the substrate 100, and a longitudinal detection sensor 310 arranged on the transverse movement unit. The lateral detection sensor 300 is used to detect the collapse position information of the substrate 100, and the longitudinal detection sensor 310 is used to detect the collapse depth information of the substrate 100. The lateral detection sensor 300 is arranged beside the substrate 100 and detects along the width direction beside the substrate 100 to detect the collapse degree of the substrate 100 in this direction. Then, the longitudinal detection sensor 310 moves through the transverse movement unit to scan and detect the substrate 100 along the width direction to detect the collapse depth data.

[0035] In one embodiment, the lateral detection sensor 300 and the longitudinal detection sensor 310 are laser sensors. The laser sensors have high measurement accuracy and can perform remote detection without approaching the substrate 100.

[0036] In one embodiment, the traversing unit includes a second motor 320 disposed on the frame 200, a lateral guide rail 340 disposed on the frame 200, and a synchronous belt 330 connecting the output end of the second motor 320 and the longitudinal detection sensor 310. The longitudinal detection sensor 310 is disposed on the lateral guide rail 340. The second motor 320 drives the longitudinal detection sensor 310 to move in the width direction of the substrate 100 through the synchronous belt 330.

[0037] It can be understood that the detection system can be a component of an on-line profile detection and rectification device or a detection device independent of the on-line profile detection and rectification device.

[0038] It should be understood that the above embodiments only represent the preferred embodiments of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. An online profile detection and correction device, arranged on a substrate (100), characterized in that: include: A frame (200), a detection system, and a floating roller assembly; The detection system and the floating roller assembly are arranged on the frame (200) along the length direction of the substrate (100); The floating roller assembly comprises a roller (400) arranged along the width direction of the substrate (100), a swing core unit (410) for adjusting the center of the two ends of the roller (400), and an adjustment unit (420) for driving the swing core unit (410) to adjust the relative height of the two ends of the roller (400), the adjustment unit (420) comprising a guide plate (421) connected to the swing core unit (410) at both ends, a driving mechanism installed on the frame (200), and an abutment member driven by the driving mechanism to move in the width direction and abut against the top surface of the guide plate (421), the top surface of the guide plate (421) in contact with the abutment member being an inclined surface inclined in the width direction; The detection system is used to detect collapse degree data of the substrate (100); and the floating roller assembly is used to adjust the tension of the substrate (100) in the width direction according to the collapse degree data.

2. The online contour detection and correction device according to claim 1 is characterized in that: The adjustment unit (420) comprises a guide assembly connected to the swing core unit (410) and guiding the swing core unit (410) to move in a vertical direction.

3. The online contour detection and correction device according to claim 2 is characterized in that: The guide assembly comprises a slider (429) fixedly connected to the swing core unit (410), and a slide rail (428) vertically fixedly arranged on the frame (200) and for the slider (429) to slide on.

4. The online contour detection and correction device according to claim 1, characterized in that: A self-aligning bearing (411) is arranged inside the swing core unit (410), and the self-aligning bearing (411) can adapt to radial force to form a certain deflection angle to connect with the roller (400).

5. The online contour detection and correction device according to claim 1, characterized in that: The driving mechanism comprises a first motor (425) horizontally arranged on the frame (200), a conversion unit (423) connected to the output shaft of the first motor (425) to convert the motor rotation into horizontal movement, and a horizontal guide mechanism for guiding the horizontal movement of the output end of the conversion unit (423); the output end of the conversion unit (423) is connected to the abutment member (422); or, The driving mechanism comprises a linear motor horizontally arranged on the frame (200), and a horizontal guiding mechanism connected to the linear motor, and the abutment member (422) is connected to the linear motor.

6. The online contour detection and correction device according to claim 1, characterized in that: The top surface of the guide plate (421) is an inclined surface, and the slope of the guide plate (421) is between 3° and 10°.

7. The online contour detection and correction device according to claim 1, characterized in that: The abutment member (422) is a cam bearing follower.

8. The online contour detection and correction device according to claim 1, characterized in that: The adjustment unit (420) further comprises an elastic reset mechanism, wherein the elastic reset mechanism is elastically connected to the swing core unit and supports the swing core unit.

9. The online contour detection and correction device according to claim 1, characterized in that: The detection system comprises a transverse detection sensor (300) fixed on one side of a substrate (100), a transverse movement unit arranged above the substrate (100), and a longitudinal detection sensor (310) arranged on the transverse movement unit, wherein the transverse detection sensor (300) is used to detect the collapsed position information of the substrate (100), and the longitudinal detection sensor (310) is used to detect the collapsed depth information of the substrate (100).

10. The online contour detection and correction device according to claim 9, characterized in that: The transverse movement unit comprises a second motor (320) arranged on the frame (200), a transverse guide rail (340) arranged on the frame (200), and a synchronous belt (330) connecting the output end of the second motor (320) and the longitudinal detection sensor (310), wherein the longitudinal detection sensor (310) is arranged on the transverse guide rail (340).

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