Online contour detection deviation rectifying mechanism

Abstract

The utility model is suitable for the field of lithium battery manufacturing, and discloses an on-line contour detection and correction mechanism which comprises a rack, a detection system and a floating roller assembly, the floating roller assembly comprises a roller, 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 adjusting unit comprises a guide assembly and two driving elements, the guide assembly is connected with the core swinging unit and guides the movement of the core swinging unit in the vertical direction, and the two driving elements are fixedly installed on the rack and correspond to the core swinging unit. And the floating roller assembly adjusts the tension of the base material in the width direction according to the collapse degree data, the base material is deformed due to different stress on the two sides, and the deformation can generate a stretching force on the base material in the width direction, so that the collapse of the base material in the width direction is corrected, the collapse of the base material is reduced, and 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 online contour detection and correction mechanism. Background Art

[0002] Lithium-ion batteries, due to their high energy density, long cycle life, excellent mechanical properties, and environmental friendliness, are widely used in various consumer electronics, electric vehicles, and energy storage devices such as wind and solar power. The preparation of lithium battery pole pieces is the most basic and critical part of the lithium battery industry. To improve the quality of pole piece manufacturing and prevent problems with the aluminum and copper foils from affecting pole piece preparation, existing technologies have introduced the use of tension machines. Existing technologies use tension machines to detect the edge collapse of aluminum and copper foils, and to detect the unevenness of the substrate surface when it moves on rollers at a certain tension. This allows unqualified parts to be removed, thereby improving the quality and efficiency of pole piece preparation.

[0003] However, tension machine testing is an offline process, which consumes additional time and impacts production efficiency. Furthermore, offline tension machine testing only monitors the unwinding and rewinding phases, adjusting the tension along the substrate's length. This adjustment fails to effectively reduce width collapse. After the product enters the coating process, there is no way to handle unqualified samples (those with excessive width collapse), severely impacting shipping quality. Existing technologies lack the ability to detect defects along the width of aluminum and copper foils, nor the ability to repair these defects. Utility Model Content

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

[0005] The technical solution adopted by the utility model to solve its technical problems includes: an online contour detection and correction mechanism is arranged on the production line of the substrate, and the online contour detection and correction mechanism 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 adjusting the center of the roller at both ends, and an adjustment unit that drives the swing core unit to adjust the relative height of the two ends of the roller, the adjustment unit includes a guide assembly connected to the swing core unit and guiding the swing core unit to move in the vertical direction, two driving elements fixedly installed on the frame and corresponding to the swing core units respectively, the output end of the driving element is connected to the swing core unit to drive the swing core unit to move in the vertical direction; wherein, the detection system is used to detect the collapse degree data of the substrate; the floating roller assembly is used to adjust the tension of the substrate in the width direction according to the collapse degree data.

[0006] In some embodiments, the driving element includes a pneumatic element connected to the swing core units at both ends, a precision pressure reducing valve is installed on the top of the pneumatic element, and the output end of the pneumatic element is connected to the swing core unit.

[0007] In some embodiments, a fixing seat is further provided on the frame, and the fixing seat is hinged to an end of the pneumatic element away from the output end.

[0008] In some embodiments, the guide assembly includes a slider fixedly connected to the swing core unit, and a slide rail vertically fixed on the frame and for the slider to slide on.

[0009] In some embodiments, a self-aligning bearing is provided in the swing core unit, and the self-aligning bearing can adapt to radial force to form a certain deflection angle to connect with the roller.

[0010] In some embodiments, the adjustment unit further includes an elastic reset unit, which is elastically connected to the pendulum core unit and supports the pendulum core unit.

[0011] In some embodiments, the elastic reset unit includes an upper spring and a lower spring, the upper part of the upper spring is connected to the frame, the lower part of the upper spring is connected to the swing core unit, the upper part of the lower spring is connected to the swing core unit and supports the swing core unit, and the lower part of the lower spring is connected to the frame.

[0012] In some embodiments, the detection system includes a lateral detection sensor fixed on one side of the substrate, a lateral movement unit arranged above the substrate, and a longitudinal detection sensor arranged on the lateral movement unit, wherein the lateral detection sensor is used to detect the collapse position information of the substrate, and the longitudinal detection sensor is used to detect the collapse depth information of the substrate.

[0013] In some embodiments, the transverse movement unit includes a first motor arranged on a frame, a transverse guide rail arranged on the frame, and a synchronous belt connecting the output end of the first motor and the longitudinal detection sensor, and the longitudinal detection sensor is arranged on the transverse guide rail.

[0014] In some embodiments, the lateral detection sensor and the longitudinal detection sensor are laser sensors.

[0015] The implementation of the utility model has the following beneficial effects: the detection system first detects the collapse of the substrate being transported online and detects the collapse degree data. The floating roller assembly then adjusts the tension of the substrate in the width direction according to the collapse degree data. The substrate is deformed due to different forces on both sides. The deformation will generate a tensile force on the substrate in the width direction, so that the collapse of the substrate in the width direction is corrected, the collapse of the substrate is reduced, and the production quality of the electrode is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0017] Figure 1 This is a front structural diagram of an online contour detection and correction mechanism in some embodiments of the present utility model;

[0018] Figure 2 It is a reverse structural diagram of an online contour detection and correction mechanism in some embodiments of the present utility model.

[0019] Figure annotation

[0020] 100. Base material; 200. Frame; 300. Transverse detection sensor; 310. Longitudinal detection sensor; 320. First motor; 330. Synchronous belt; 340. Transverse guide rail; 400. Roller; 410. Swing unit; 411. Self-aligning bearing; 412. First elastic member; 413. Second elastic member; 420. Adjustment unit; 421. Fixed seat; 422. Pneumatic element; 423. Precision pressure reducing valve; 424. Slide rail; 425. Slider. DETAILED DESCRIPTION

[0021] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the present technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0022] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, and they can be internal connections between two elements or interactions between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", and "third" are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", and "third" can explicitly or implicitly include one or more of these 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 online contour detection and correction mechanism in an embodiment of the present invention is shown. The online contour detection and correction mechanism can be used to detect the collapse of a substrate 100 being transported online, and adjust the tension of the substrate 100 in the width direction through a floating roller assembly to correct the collapse of the substrate 100 in the width direction. The online detection and correction mechanism is arranged on the production line of the substrate 100, and 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 centering 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, and the adjustment unit 420 includes The apparatus comprises a guide assembly connected to the oscillating core unit 410 and guiding the oscillating core unit 410 in the vertical direction, and two driving elements fixedly mounted on the frame 200 and corresponding to the oscillating core unit 410. The output ends of the driving elements are connected to the oscillating core unit 410 to drive the oscillating core unit 410 to move in the vertical direction. The detection system is used to detect the 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. The detection system first detects the collapse of the substrate 100 being transported online and detects the collapse degree data. The floating roller assembly then adjusts the tension of the substrate 100 in the width direction according to the collapse degree data. The substrate 100 deforms due to the different forces on both sides. This deformation generates a tensile force on the substrate 100 in the width direction, thereby correcting the collapse of the substrate 100 in the width direction, reducing the collapse of the substrate 100, and improving the production quality of the electrode.

[0024] like Figure 2 As shown, in some embodiments, the driving element may include pneumatic elements 422 connected to the swing core units 410 at both ends, with precision pressure reducing valves 423 mounted on top of the pneumatic elements 422. The output end of the pneumatic element 422 is connected to the swing core unit 410. The output of the pneumatic element 422 is controlled by controlling the pressure threshold of the precision pressure reducing valve 423. During adjustment, the pressure threshold of the precision pressure reducing valves 423 on both sides is used to synchronously adjust the inclination angle of the roller 400.

[0025] In some embodiments, the pressure reducing valve 423 may be replaced with a pressure regulating valve.

[0026] In some embodiments, the driving element is a servo motor, which can accurately control the actual output distance and thus accurately control the relative height of the roller 400 .

[0027] like Figure 2As shown, in some embodiments, the frame 200 may include a fixed seat 421 on the frame 200, and the fixed seat 421 is hinged to the end of the pneumatic element 422 away from the output end. Because the output shaft of the pneumatic element 422 does not completely coincide with the movement axis of the swing core unit 410, the hinge of the fixed seat 421 is conducive to the swinging of the pneumatic element 422 to adapt to the movement trajectory of the swing core unit 410, avoid direct impact between the pneumatic element 422 and the swing core unit 410, and improve the service life of the swing core unit 410 and the pneumatic element 422.

[0028] like Figure 2 As shown, in some embodiments, the guide assembly may include a slider 425 fixedly connected to the swing core unit 410, and a slide rail 424 vertically fixed on the frame 200 and for the slider 425 to slide thereon. The slider 425 and the slide rail 424 are closely matched so that the swing core unit 410 has no extra space for displacement, and the friction coefficient between the slider 425 and the slide rail 424 is small, so that when the swing core unit 410 is affected by other external forces, it will not generate a large friction force, which affects the movement of the swing core unit 410.

[0029] like Figure 2 As shown, in some embodiments, the swing core unit 410 may include a self-aligning bearing 411 provided in 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. The self-aligning bearing 411 can adapt to radial force to form a certain deflection angle. When the roller 400 is tilted, the roller 400 and the self-aligning bearing 411 form a certain angle, and the roller 400 can still be movably connected to the self-aligning bearing 411.

[0030] like Figure 2 As shown, in some embodiments, the adjustment unit 420 may further include an elastic reset unit, which is elastically connected to the pendulum core unit 410 and supports the pendulum core unit 410 .

[0031] like Figure 2 As shown, the elastic reset unit may include an upper spring and a lower spring in some embodiments, the upper part of the upper spring is connected to the frame 200, the lower part of the upper spring is connected to the swing core unit 410, the upper part of the lower spring is connected to the swing core unit 410 and supports the swing core unit 410, the lower part of the lower spring is connected to 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 supports 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 limits 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 guide plate disappears.

[0032] In some embodiments, the elastic reset unit may also be made of other elastic materials such as a reed.

[0033] In some embodiments, the upper spring and the lower spring may also be supported by cylinders.

[0034] like Figure 1 As shown, in some embodiments, the detection system may include a transverse detection sensor 300 fixed to one side of the substrate 100, a transverse movement unit disposed above the substrate 100, and a longitudinal detection sensor 310 disposed on the transverse movement unit. The transverse detection sensor 300 is used to detect the collapsed position of the substrate 100, and the longitudinal detection sensor 310 is used to detect the collapsed depth of the substrate 100. The transverse detection sensor 300 is disposed beside the substrate 100 and detects the extent of the substrate 100 collapse in this direction from the side of the substrate 100. The longitudinal detection sensor 310 then moves via the transverse movement unit to scan the substrate 100 along the width direction and detect the collapse depth data.

[0035] like Figure 1 As shown, in some embodiments, the detection system may include a transverse detection sensor 300 and a longitudinal detection sensor 310 which are laser sensors. The laser sensors have high measurement accuracy and can perform remote detection without being close to the substrate 100 .

[0036] like Figure 1 As shown, in some embodiments, the transverse movement unit may include a second motor 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 and the longitudinal detection sensor 310, the longitudinal detection sensor 310 is arranged on the transverse guide rail 340, and the second motor 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 the online contour detection and correction mechanism, or it can be a detection device independent of the online contour detection and correction mechanism.

[0038] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. An online contour detection and correction mechanism, arranged on a production line of 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), wherein 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, and two driving elements fixedly mounted on the frame (200) and corresponding to the swing core unit (410), respectively, wherein the output end of the driving element is connected to the swing core unit (410) to drive the swing core unit (410) to move in the vertical 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 mechanism according to claim 1, characterized in that: The driving element comprises a pneumatic element (422) respectively connected to the swing core units (410) at both ends, a precision pressure reducing valve (423) is installed on the top of the pneumatic element (422), and the output end of the pneumatic element (422) is connected to the swing core unit (410).

3. The online contour detection and correction mechanism according to claim 2, characterized in that: A fixing seat (421) is further provided on the frame (200), and the fixing seat (421) is hinged to an end of the pneumatic element (422) away from the output end.

4. The online contour detection and correction mechanism according to claim 1, characterized in that: The guide assembly comprises a slider (425) fixedly connected to the swing core unit (410), and a slide rail (424) vertically fixedly arranged on the frame (200) and for the slider (425) to slide on.

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

6. The online contour detection and correction mechanism according to claim 1, characterized in that: The adjustment unit (420) further comprises an elastic reset unit, wherein the elastic reset unit is elastically connected to the swing core unit (410) and supports the swing core unit (410).

7. The online contour detection and correction mechanism according to claim 6, characterized in that: The elastic reset unit comprises an upper spring and a lower spring, wherein the upper portion of the upper spring is connected to the frame (200), and the lower portion of the upper spring is connected to the swing core unit (410); the upper portion of the lower spring is connected to the swing core unit (410) and supports the swing core unit (410), and the lower portion of the lower spring is connected to the frame (200).

8. The online contour detection and correction mechanism 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).

9. The online contour detection and correction mechanism according to claim 8, characterized in that: The transverse movement unit comprises a first motor (320) arranged on a frame (200), a transverse guide rail (340) arranged on the frame (200), and a synchronous belt (330) connecting an output end of the first motor (320) and the longitudinal detection sensor (310), wherein the longitudinal detection sensor (310) is arranged on the transverse guide rail (340).

10. The online contour detection and correction mechanism according to claim 8, characterized in that: The lateral detection sensor (300) and the longitudinal detection sensor (310) are laser sensors.

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