A static sheet shape measuring instrument

Abstract

The present application relates to the technical field of plate shape measurement, and particularly relates to a static plate shape measuring instrument for detecting the plate shape of a battery foil, comprising a conveying platform, a moving frame and a detection assembly; the detection assembly comprises a driving motor, a laser emitter, a swing transmission mechanism, a fixed receiver and a moving receiving plate; the laser emitter is used for emitting laser to the surface of the battery foil; the swing transmission mechanism is connected with the output end of the driving motor and the laser emitter at the same time, and is used for making the laser emitter swing back and forth around the axis in the first direction; the fixed receiver is arranged at the emitting end of the laser emitter, and is used for receiving the vertical laser reflected by the battery foil; the moving receiving plate is provided with two, and is arranged at the two sides of the laser emitter along the second direction respectively, and can move along the second direction synchronously with the swing of the laser emitter, so as to receive the inclined laser reflected by the protrusions or depressions on the battery foil, and the plate shape detection result of the battery foil can be improved.

Description

Technical Field

[0001] This invention relates to the field of plate shape measurement technology, and in particular to a static plate shape measuring instrument. Background Technology

[0002] Battery foil, an important raw material rolled from copper or aluminum, is widely used in lithium battery production. The rolled shape of the battery foil is a key technical indicator that directly affects its quality and the performance of the final lithium battery product. Currently, the industry primarily uses static shape measuring instruments to scan and inspect the surface of the battery foil to achieve comprehensive and systematic shape analysis.

[0003] For example, patent document CN118936376B discloses a testing device for the production and processing of high-capacity etched foil. This device uses a bidirectional motor to drive the regulator and laser to rotate, and then uses a unidirectional motor to drive the unwinding and winding of the etched foil, achieving detection during the unwinding and winding process. The laser beam performs S-shaped sampling detection on the surface of the etched foil. However, when the foil surface is uneven, the laser is prone to deviating from its original receiving path after being reflected at an angle, causing the receiver to fail to capture the signal properly, thus affecting the accuracy of the plate shape detection results for the plate-shaped battery foil. Summary of the Invention

[0004] Therefore, it is necessary to provide a static plate shape measuring instrument to address the technical problem that current static plate shape measuring instruments produce inaccurate detection results when faced with uneven surfaces.

[0005] The above objectives are achieved through the following technical solutions: A static plate shape measuring instrument for detecting the plate shape of battery foil includes a conveying platform, a moving frame, and a detection component. The conveying platform is used to place the battery foil. The moving frame is movable along a first direction on the conveying platform, the first direction being the winding direction of the battery foil. The detection component is mounted on the moving frame and is movable along a second direction perpendicular to the first direction, both the first and second directions being horizontal. The detection component includes a drive motor, a laser emitter, a swing transmission mechanism, a fixed receiver, and a moving receiving plate. The drive motor has an output end. The laser emitter is used to direct light onto the surface of the battery foil. The laser emitter extends vertically in its initial position, with its lower end serving as the emitting end. The oscillating transmission mechanism is connected to both the output of the drive motor and the laser emitter, enabling the laser emitter to oscillate back and forth around the axis of the first direction, thereby scanning the surface of the battery foil. The fixed receiver is located at the emitting end of the laser emitter and is used to receive the vertical laser reflected by the battery foil. Two movable receiving plates are provided, located on either side of the laser emitter along the second direction. They can move synchronously along the second direction as the laser emitter oscillates, thereby receiving the tilted laser reflected by the protrusions or depressions on the battery foil.

[0006] Furthermore, the detection assembly includes a frame that can move along a second direction on a movable frame. The drive motor and the laser emitter are both mounted on the frame. The swing transmission mechanism includes a drive shaft rotatably mounted on the frame and a continuously variable transmission mechanism. One end of the drive shaft is connected to the output end of the drive motor via the continuously variable transmission mechanism, and the other end of the drive shaft is connected to the laser emitter via a flexible coupling. The laser emitter has a first limit position and a second limit position during reciprocating swing. The second limit position is defined as forward, the first limit position as backward, and the first limit position as the initial position. The swing angle of the laser emitter is an acute angle.

[0007] Furthermore, the continuously variable transmission adjustment mechanism includes a driven transmission wheel mounted on the transmission shaft to prevent rotation and a driving conical wheel located at the output end of the drive motor. The driving conical wheel and the driven transmission wheel are in frictional engagement, thereby driving the drive motor to rotate the transmission shaft through the driving conical wheel and the driven transmission wheel, which in turn drives the laser emitter to oscillate back and forth. The driven transmission wheel can slide along the axial direction of the transmission shaft to change the transmission ratio between the driving conical wheel and the driven transmission wheel.

[0008] Furthermore, a mounting bracket is provided at one end of the drive shaft near the laser emitter, and a shock-absorbing damping component is provided between the laser emitter and the mounting bracket. The shock-absorbing damping component is used to dampen the laser emitter. There are two shock-absorbing damping components, which are respectively located on both sides of the laser emitter along the second direction. Each shock-absorbing damping component includes a damping cylinder and a damping rod. Both the damping cylinder and the damping rod are arc-shaped, and their axes extend along the first direction. The damping cylinder is fixedly mounted on the mounting bracket and is filled with hydraulic oil. The damping rod is slidably mounted in the damping cylinder, and its upper and lower ends extend from the upper and lower ends of the damping cylinder, respectively. The upper ends of both damping rods are connected to the side wall of the laser emitter.

[0009] Furthermore, each of the two damping rods has a top block at its lower end, and a trigger block is provided on the mounting frame. The trigger block is located between the two damping rods and has two inclined surfaces. The top block corresponds to the inclined surfaces and slides in fit. The frame is also provided with a speed adjustment mechanism. When the laser emitter swings to the first or second limit position, the top block on one of the damping rods can push the corresponding inclined surface on the trigger block, thereby driving the trigger block to move downward. The downward movement of the trigger block can trigger the speed adjustment mechanism, thereby allowing the speed adjustment mechanism to adjust the swing speed of the laser emitter.

[0010] Furthermore, the speed adjustment mechanism includes a sliding frame, a planetary gear transmission mechanism, and a lead screw. The sliding frame is slidably mounted on the frame in the vertical direction and located below the trigger block. The upper surface of the sliding frame has an arc-shaped groove, the axis of which extends along a first direction. The lower end of the trigger block can reciprocate along the inner wall of the arc-shaped groove. The lead screw is rotatably mounted on the frame and parallel to the transmission shaft. An adjusting slider is threaded onto the lead screw, and the adjusting slider is fixedly connected to the driven gear. The planetary gear transmission mechanism is located between the sliding frame and the lead screw. When the trigger block moves downward, it can push the sliding frame to move downward synchronously. The sliding frame drives the lead screw to rotate through the planetary gear transmission mechanism. The rotation of the lead screw can drive the adjusting slider to move along the length of the lead screw, thereby causing the driven gear to slide synchronously along the axial direction of the transmission shaft, thus changing the transmission ratio between the driving conical gear and the driven gear.

[0011] Furthermore, a first spring is provided between the trigger block and the mounting bracket, the first spring having a tendency to move the trigger block upwards, a limiting rod is provided at the bottom of the sliding bracket, the limiting rod extends in the vertical direction and is slidably disposed on the frame, and a second spring is provided between the limiting rod and the frame, the second spring having a tendency to make the sliding bracket fit against the trigger block upwards.

[0012] Furthermore, the frame is also provided with a vertical fixed plate, on which a first rack plate extending along a second direction is provided. A drive gear is coaxially provided on the transmission shaft, and the drive gear meshes with the first rack plate. Each movable receiving plate is provided with a second rack plate, which is parallel to the first rack plate. Two first gears are rotatably provided on the frame, with the axis of the first gear extending along a first direction. Each first gear corresponds to and meshes with a second rack plate. Both first gears mesh with the first rack plate simultaneously. When the laser emitter oscillates back and forth between the first and second extreme positions, the transmission shaft drives the drive gear to oscillate back and forth, thereby driving the first rack plate to oscillate back and forth along the second direction. The first rack plate drives the two movable receiving plates to oscillate back and forth synchronously along the second direction through the two first gears, thereby realizing that the movable receiving plates move synchronously with the oscillation of the laser emitter.

[0013] Furthermore, the frame is provided with two limiting grooves, each corresponding to a movable receiving plate, and each movable receiving plate can slide along the second direction within the corresponding limiting groove.

[0014] Furthermore, the conveying platform is provided with a drive roller and an abutment roller at both ends along the first direction. The drive roller is used to wind up the battery foil so that the battery foil moves along the first direction, and the abutment roller is used to support and position the rolled battery foil.

[0015] The beneficial effects of this invention are: The static plate shape measuring instrument provided by this invention firstly drives a laser emitter to reciprocate around an axis in a first direction via a drive motor, causing the laser emitter to emit an inclined laser beam onto the surface of the battery foil. Then, the laser emitter moves along a second direction, causing it to emit a vertical laser beam onto the surface of the battery foil. When the surface of the battery foil is smooth, a fixed receiver can receive the vertical laser beam reflected by the battery foil. When the surface of the battery foil has wrinkles and protrusions or depressions, a moving receiver plate can receive the inclined laser beam reflected by the protrusions or depressions on the battery foil. In this way, two detection data points can be obtained for the same location. By comparing the two detection data points, it can be determined whether there are wrinkles at that location. By analyzing the detection data from all locations, accurate battery foil plate shape data can be obtained, thereby improving the plate shape detection results of the battery foil.

[0016] Secondly, by incorporating damping components, when the laser emitter swings to its first or second limit position, the inertial force of the swing transmission mechanism tends to cause instantaneous impact and vibration in the laser emitter. At this time, the laser emitter drives the damping rod to move within the damping cylinder and dissipates the impact energy, achieving primary damping of the laser emitter, effectively suppressing its vibration and shaking, and protecting the transmission shaft and drive motor. Simultaneously, the damping rods on both sides cause an imbalance of forces on both sides of the trigger block, allowing the trigger block to move downwards and trigger the speed adjustment mechanism. The speed adjustment mechanism automatically reduces the swing speed of the laser emitter, achieving secondary damping of the laser emitter, preventing laser deviation caused by laser emitter vibration, and ensuring the accuracy of the battery foil shape detection results. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a static plate shape measuring instrument provided in an embodiment of the present invention; Figure 2 This is an exploded view of a static plate shape measuring instrument provided in an embodiment of the present invention; Figure 3 An exploded view of the detection component in a static plate shape measuring instrument according to an embodiment of the present invention; Figure 4 A partial structural diagram of the detection component in a static plate shape measuring instrument provided in an embodiment of the present invention. Figure 1 ; Figure 5 A partial structural diagram of the detection component in a static plate shape measuring instrument provided in an embodiment of the present invention. Figure 2 ; Figure 6 A partial structural diagram of the detection component in a static plate shape measuring instrument provided in an embodiment of the present invention. Figure 3 ; Figure 7A partial structural diagram of the detection component in a static plate shape measuring instrument provided in an embodiment of the present invention. Figure 4 ; Figure 8 This is a top view schematic diagram of the detection component in a static plate shape measuring instrument provided in an embodiment of the present invention; Figure 9 for Figure 8 Sectional view of AA; Figure 10 for Figure 9 Cross-sectional view of BB (laser emitter in first extreme position); Figure 11 for Figure 10 CC section view; Figure 12 for Figure 10 Another schematic diagram of the state (the laser emitter is in the second extreme position).

[0018] in: 100. Detection component; 101. Drive motor; 102. Driving cone wheel; 103. Bearing; 104. Lead screw; 105. Adjusting slider; 106. Planetary gear transmission mechanism; 107. Driven gear; 108. Transmission shaft; 109. Drive gear; 110. First connecting block; 111. Damping cylinder; 112. Mounting bracket; 113. Elastic block; 114. Damping rod; 115. Laser emitter; 116. First spring; 117. Trigger block; 118. Rotary groove; 119. Second connecting block 120. Fixed plate; 121. Damping plate; 122. Top block; 123. Fixed receiver; 124. Transmitter; 125. First rack plate; 126. First gear; 127. Moving receiver plate; 128. Frame; 129. Second rack plate; 130. Limiting groove; 131. Sliding frame; 132. Limiting rod; 133. Second spring; 134. Third rack plate; 200. Moving frame; 300. Conveying platform; 301. Drive roller; 302. Abutment roller; 400. Moving mechanism. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0020] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] like Figures 1 to 12 As shown, an embodiment of the present invention provides a static plate shape measuring instrument for detecting the plate shape of battery foil, including a conveying platform 300, a moving frame 200, and a detection component 100; the conveying platform 300 is used to place the battery foil; the moving frame 200 is capable of moving on the conveying platform 300 along a first direction, the first direction being the winding direction of the battery foil; the detection component 100 is disposed on the moving frame 200 and is capable of moving on the moving frame 200 along a second direction perpendicular to the first direction, both the first and second directions being horizontal directions.

[0023] The detection assembly 100 includes a drive motor 101, a laser emitter 115, a swing transmission mechanism, a fixed receiver 123, and a movable receiving plate 127. The drive motor 101 has an output end. The laser emitter 115 emits laser light onto the surface of the battery foil. In its initial position, the laser emitter 115 extends vertically, with its lower end being the emitting end 124. The swing transmission mechanism is connected to both the output end of the drive motor 101 and the laser emitter 115, and is used to make the laser emitter 115 swing back and forth around the axis of the first direction, thereby scanning the surface of the battery foil. The fixed receiver 123 is disposed at the emitting end 124 of the laser emitter 115 and is used to receive the vertical laser light reflected by the battery foil. Two movable receiving plates 127 are provided, located on both sides of the laser emitter 115 along the second direction. They can move synchronously along the second direction with the swing of the laser emitter 115, thereby receiving the tilted laser light reflected by the protrusions or depressions on the battery foil.

[0024] First, the drive motor 101 drives the laser emitter 115 to reciprocate around the axis in the first direction, causing the laser emitter 115 to emit an oblique laser beam onto the surface of the battery foil. Then, the laser emitter 115 moves along the second direction, causing it to emit a vertical laser beam onto the surface of the battery foil. When the surface of the battery foil is smooth, the fixed receiver 123 can receive the vertical laser beam reflected by the battery foil. When the surface of the battery foil has wrinkles and protrusions or depressions, the moving receiver plate 127 can receive the oblique laser beam reflected by the protrusions or depressions on the battery foil. In this way, two detection data points can be obtained for the same position. By comparing the two detection data points, it can be determined whether there are wrinkles at that position. By analyzing the detection data from all positions, accurate battery foil shape data can be obtained, thereby improving the shape detection results.

[0025] Furthermore, the detection component 100 includes a frame 128, which is movable along a second direction on the movable frame 200. The drive motor 101 and the laser emitter 115 are both mounted on the frame 128. The swing transmission mechanism includes a drive shaft 108 rotatably mounted on the frame 128 and a continuously variable transmission mechanism. One end of the drive shaft 108 is connected to the output end of the drive motor 101 via the continuously variable transmission mechanism, and the other end of the drive shaft 108 is connected to the laser emitter 115 via a flexible coupling. The laser emitter 115 has a first limit position and a second limit position during the reciprocating swing process. The second limit position is defined as forward, the first limit position is defined as backward, the first limit position is defined as the initial position, and the swing angle of the laser emitter 115 is an acute angle.

[0026] The output end of the drive motor 101 is rotatably mounted on the frame 128 via a bearing 103. The laser emitter 115 has a rotating groove 118, the axis of which extends along a first direction. The other end of the drive shaft 108 is rotatably connected to the rotating groove 118. The flexible coupling includes a first connecting block 110, a second connecting block 119, and an elastic block 113. The first connecting block 110 is fixedly connected to the drive shaft 108, and the second connecting block 119 is fixedly connected to the outer surface of the laser emitter 115. The elastic block 113 is clamped and fixedly connected between the first connecting block 110 and the second connecting block 119. The flexible coupling allows for relative rotation between the laser emitter 115 and the drive shaft 108 within a small angle range, thus providing shock absorption and buffering.

[0027] Furthermore, the continuously variable transmission (CVT) mechanism includes a driven transmission wheel 107 mounted on the transmission shaft 108 to prevent rotation and a driving conical wheel 102 located at the output end of the drive motor 101. The driving conical wheel 102 and the driven transmission wheel 107 are in frictional engagement, thereby driving the drive motor 101 to rotate the transmission shaft 108 via the driving conical wheel 102 and the driven transmission wheel 107, which in turn drives the laser emitter 115 to oscillate back and forth. The driven transmission wheel 107 can slide along the axial direction of the transmission shaft 108 to change the transmission ratio between the driving conical wheel 102 and the driven transmission wheel 107. In this way, the output speed of the transmission shaft 108 can be continuously and smoothly changed without adjusting the speed of the drive motor 101, thereby continuously adjusting the oscillation speed of the laser emitter 115.

[0028] Specifically, to ensure a stable frictional transmission clamping force between the driving conical wheel 102 and the driven transmission wheel 107, a clamping adjustment mechanism is also provided on the frame 128. The clamping adjustment mechanism includes a clamping spring and a clamping seat (not shown in the figure). The clamping seat is located on the side of the driving conical wheel 102 facing away from the driven transmission wheel 107. The clamping spring is disposed between the clamping seat and the frame 128 and is used to apply an axial thrust to the driving conical wheel 102 pointing towards the driven transmission wheel 107, so that the driven transmission wheel 107 and the driving conical wheel 102 always maintain elastic clamping contact. Furthermore, a mounting bracket 112 is provided at one end of the drive shaft 108 near the laser emitter 115. A shock-absorbing damping component is provided between the laser emitter 115 and the mounting bracket 112. The shock-absorbing damping component is used to dampen the laser emitter 115. Two shock-absorbing damping components are provided and are respectively located on both sides of the laser emitter 115 along the second direction. Each shock-absorbing damping component includes a damping cylinder 111 and a damping rod 114. Both the damping cylinder 111 and the damping rod 114 are arc-shaped, and their axes extend along the first direction. The damping cylinder 111 is fixedly mounted on the mounting bracket 112 and is filled with hydraulic oil. The damping rod 114 is slidably mounted in the damping cylinder 111, and its upper and lower ends extend from the upper and lower ends of the damping cylinder 111, respectively. The upper ends of both damping rods 114 are connected to the side wall of the laser emitter 115.

[0029] Specifically, a damping plate 121 is provided on the damping rod 114. The damping rod 114 slides in a damping cylinder 111 sealed by the damping plate 121. The damping cylinder 111 is divided into an oil chamber and a compensation chamber by the damping plate 121. A throttling orifice is provided on the damping plate 121. The oil chamber is filled with hydraulic oil, and a compensation spring is provided in the compensation chamber. When the damping rod 114 drives the damping plate 121 to slide in the damping cylinder 111, the hydraulic oil in the oil chamber is squeezed and flows into the compensation chamber through the throttling orifice on the damping plate 121. The oil flow consumes impact energy during the process, thereby reducing the vibration of the laser emitter 115. When the damping rod 114 moves in the opposite direction, the oil flows in the opposite direction, which also generates a damping force. By setting up a damping component, when the laser emitter 115 swings to the first or second limit position, the inertial force of the swing transmission mechanism will cause the laser emitter 115 to have a tendency to generate instantaneous impact and vibration. At this time, the laser emitter 115 drives the damping rod 114 to move in the damping cylinder 111 and consume the impact energy, thereby achieving first-level shock absorption of the laser emitter 115, effectively suppressing its vibration and shaking, and protecting the transmission shaft 108 and the drive motor 101.

[0030] Furthermore, each of the two damping rods 114 has a top block 122 at its lower end. The mounting bracket 112 has a trigger block 117 located between the two damping rods 114. The trigger block 117 has two inclined surfaces, and the top block 122 corresponds to and slides with the inclined surfaces. The frame 128 is also equipped with a speed adjustment mechanism. When the laser emitter 115 swings to the first or second limit position, the top block 122 on one of the damping rods 114 can push the corresponding inclined surface on the trigger block 117, thereby driving the trigger block 117 to move downward. The downward movement of the trigger block 117 can trigger the speed adjustment mechanism, thereby allowing the speed adjustment mechanism to adjust the swing speed of the laser emitter 115.

[0031] When the laser emitter 115 swings to its second limit position, it drives the damping rod 114 located behind it to rotate synchronously, causing the top block 122 at its lower end to contact the inclined surface on the trigger block 117. When the laser emitter 115 swings to its first limit position, it drives the damping rod 114 located in front of it to rotate synchronously, causing the top block 122 at its lower end to contact the inclined surface on the trigger block 117. The contact between the top block 122 and the trigger block 117 causes the trigger block 117 to move downward, thereby triggering the speed adjustment mechanism. The speed adjustment mechanism can automatically reduce the swing speed of the laser emitter 115, achieving secondary vibration damping of the laser emitter 115, preventing laser deviation caused by the vibration of the laser emitter 115, and ensuring the accuracy of the battery foil shape detection results.

[0032] Furthermore, the speed adjustment mechanism includes a sliding frame 131, a planetary gear transmission mechanism 106, and a lead screw 104. The sliding frame 131 is slidably mounted on the frame 128 in the vertical direction and is located below the trigger block 117. The upper surface of the sliding frame 131 is provided with an arc-shaped groove, the axis of which extends along a first direction. The lower end of the trigger block 117 can reciprocate along the inner wall of the arc-shaped groove. The lead screw 104 is rotatably mounted on the frame 128 and parallel to the transmission shaft 108. An adjusting slider 105 is threadedly connected to the lead screw 104. The adjusting slider 105 is connected to the driven gear... The speed wheel 107 is fixedly connected, and the planetary gear transmission mechanism 106 is located between the sliding frame 131 and the lead screw 104. When the trigger block 117 moves downward, the trigger block 117 can push the sliding frame 131 to move downward synchronously. The sliding frame 131 drives the lead screw 104 to rotate through the planetary gear transmission mechanism 106. The rotation of the lead screw 104 can drive the adjusting slider 105 to move along the length direction of the lead screw 104, so that the driven speed wheel 107 slides synchronously along its axial direction on the transmission shaft 108, thereby changing the transmission ratio between the driving cone wheel 102 and the driven speed wheel 107.

[0033] Specifically, the planetary gear transmission mechanism 106 includes a third rack plate 134 fixedly mounted on the sliding frame 131 and an external gear ring rotatably mounted on the frame 128. The third rack plate 134 extends vertically, and the external gear ring meshes with the third rack plate 134. Multiple planetary gears are meshed inside the external gear ring. A sun gear is coaxially mounted at the end of the lead screw 104, located between and meshing with multiple planetary gears simultaneously. Thus, when the sliding frame 131 moves vertically, it drives the third rack plate 134 to move synchronously downwards. The third rack plate 134 drives the external gear ring to rotate, and the rotation of the external gear ring, through the planetary gears and the sun gear, drives the lead screw 104 to rotate synchronously, thereby causing the driven transmission gear 107 to slide synchronously along the axial direction of the transmission shaft 108. When the laser emitter 115 swings to the first or second limit position, due to the deceleration and brief pause transition range near the limit position of the swing transmission mechanism, the top block 122 on the corresponding side of the damping rod 114 continuously pushes the inclined surface of the trigger block 117 within this range, causing the trigger block 117 to produce a continuous downward displacement. This continuous displacement pushes the sliding frame 131 to move downward synchronously. The sliding frame 131 drives the planetary gear transmission mechanism to operate continuously through the third rack plate 134, thereby driving the lead screw 104 to rotate continuously at a corresponding angle, realizing the axial movement of the adjusting slider 105 and the position adjustment of the driven speed reducer 107. As the number of reciprocating swings of the laser emitter 115 increases, the above adjustment process accumulates successively, thereby achieving a continuous stepless reduction in swing speed and achieving the purpose of secondary vibration reduction.

[0034] Furthermore, a first spring 116 is provided between the trigger block 117 and the mounting bracket 112. The first spring 116 has a tendency to move the trigger block 117 upward. A limiting rod 132 is provided at the bottom of the sliding bracket 131. The limiting rod 132 extends vertically and is slidably mounted on the frame 128. A second spring 133 is provided between the limiting rod 132 and the frame 128. The second spring 133 has a tendency to make the sliding bracket 131 fit upward against the trigger block 117. There are four limiting rods 132. The first spring 116 and the second spring 133 are respectively used to reset the trigger block 117 and the sliding bracket 131 upward.

[0035] Furthermore, the frame 128 is also provided with a vertical fixing plate 120, on which a first rack plate 125 extending along a second direction is provided. A drive gear 109 is coaxially provided on the transmission shaft 108, and the drive gear 109 meshes with the first rack plate 125. Each movable receiving plate 127 is provided with a second rack plate 129, which is parallel to the first rack plate 125. Two first gears 126 are rotatably provided on the frame 128, with the axis of the first gear 126 extending along a first direction. Each first gear 126 meshes with the second rack plate 125. The rack plates 129 are in one-to-one correspondence and meshing, and the two first gears 126 mesh with the first rack plate 125 at the same time. When the laser emitter 115 swings back and forth between the first limit position and the second limit position, the transmission shaft 108 drives the drive gear 109 to rotate back and forth, thereby driving the first rack plate 125 to move back and forth along the second direction. The first rack plate 125 drives the two moving receiving plates 127 to move back and forth synchronously along the second direction through the two first gears 126, thereby realizing that the moving receiving plates 127 move synchronously with the swing of the laser emitter 115.

[0036] The lower surface of the movable receiving plate 127 is used to receive reflected laser light. The movable receiving plate 127 moves synchronously with the swing of the laser emitter 115, enabling the movable receiving plate 127 to better capture the reflected laser light and improve the accuracy of the battery foil shape detection results.

[0037] Furthermore, the frame 128 is provided with two limiting grooves 130, each corresponding to a movable receiving plate 127, allowing each movable receiving plate 127 to slide along the second direction within its corresponding limiting groove 130. The limiting grooves 130 provide guidance for the movement of the movable receiving plate 127, making its movement smoother.

[0038] Furthermore, the conveying platform 300 is provided with a drive roller 301 and an abutment roller 302 at both ends along the first direction. The drive roller 301 is used to wind up the battery foil, thereby moving the battery foil along the first direction. The abutment roller 302 is used to support and position the wound battery foil. This facilitates continuous inspection of the wound battery foil.

[0039] The movable frame 200 is equipped with a moving mechanism 400 at its end. The moving mechanism 400 can drive the movable frame 200 to move along a first direction on the conveyor platform 300. The moving mechanism 400 is a track. The movable frame 200 is equipped with a lead screw extending along a second direction. A motor is driven to the end of the lead screw. The frame 128 is threadedly connected to the lead screw. The motor drives the lead screw to rotate, which can drive the frame 128 to move along the lead screw along the second direction.

[0040] Based on the above embodiments, the usage principle and working process of the embodiments of the present invention are as follows: The battery foil is laid flat on the conveyor platform 300, and the moving frame 200 is moved along the first direction to the starting detection position.

[0041] Then, the drive motor 101 is started, causing the drive motor 101 to drive the laser emitter 115 to reciprocate around the axis in the first direction. The reciprocating motion is such that the laser emitter 115 moves from the first extreme position (corresponding to...) Figure 10 Swing forward to the second extreme position (corresponding to) Figure 12 Then, it swings backward from the second extreme position to the first extreme position. During the swing, the laser emitter 115 emits a tilted laser beam onto the surface of the battery foil. Subsequently, the motor is started, causing the frame 128 to move a set distance along the second direction on the moving frame 200. This set distance is consistent with the horizontal distance of the laser emitter 115's back-and-forth swing, causing the laser emitter 115 to emit a vertical laser beam onto the surface of the battery foil. This ensures that the same position can be scanned by both tilted and vertical laser beams. The above scanning process is repeated until the frame 128, driving the laser emitter 115, has completed scanning the surface of the battery foil along the second direction.

[0042] Then the moving frame 200 is moved from the starting detection position to the next detection position along the first direction, and the scanning process is repeated until the entire surface of the battery foil along the first direction is scanned.

[0043] During this scanning process, when the surface of the battery foil is smooth, the fixed receiver 123 can receive the vertical laser reflected by the battery foil. When the surface of the battery foil has wrinkles and protrusions or depressions, the movable receiver plate 127 located in front or behind can receive the tilted laser reflected by the protrusions or depressions on the battery foil. In this way, two detection data can be obtained for the same position. By comparing the two detection data, it can be determined whether there are wrinkles at that position based on whether the offset of the tilted reflected light exceeds a preset threshold. Specifically, when the laser emitter 115 swings around the first direction axis to a tilted state, it emits a tilted laser towards the surface of the battery foil. If the surface of the battery foil is an ideally flat plane, the tilted laser is reflected by the mirror and emitted in a symmetrical direction, and will not be received by the movable receiver plates 127 located on both sides of the laser emitter 115. If there are protrusions or depressions (i.e., wrinkles) on the surface of the battery foil, the local surface normal direction is deflected, and the reflection direction of the tilted laser at that point changes accordingly. Some of the reflected light will deviate from the mirror reflection path and enter the movable receiver plate 127 on the corresponding side.

[0044] For the same detection position on the surface of the battery foil, the vertical reflected light intensity or spot position received by the fixed receiver 123 represents the reference height value of that point. When the moving receiver 127 receives oblique reflected light, the intensity of the light received or the spot offset is proportional to the height deviation of that position relative to the reference plane and the direction of the oblique angle. The reference height value obtained by vertical illumination at the same position is compared with the reflected light offset data obtained by oblique illumination. If the two values ​​match (i.e., the oblique reflected light offset is zero or within a preset error range), the surface at that position is determined to be flat. If the oblique reflected light offset detected by the moving receiver 127 exceeds a preset threshold, it indicates that there is a height abrupt change at that position, i.e., a wrinkle defect. Furthermore, depending on which moving receiver 127 received the reflected light, it can be determined whether the wrinkle is convex or concave.

[0045] By analyzing the detection data from all locations, the shape data of the battery foil can be accurately obtained, thereby improving the shape detection results. When wrinkles are detected on the surface of the battery foil, the drive roller 301 can be controlled to tighten the battery foil.

[0046] When the laser emitter 115 swings to its first or second limit position, the inertial force of the swing transmission mechanism will cause the laser emitter 115 to experience momentary impact and vibration. At this time, both the flexible coupling and the damping rod 114 will dampen the laser emitter 115, preventing the vibration and shaking of the laser emitter 115 from affecting the drive motor 101. Furthermore, under the action of the damping rods 114 on both sides of the laser emitter 115, the trigger block 117 will trigger the speed adjustment mechanism downward, causing the speed adjustment mechanism to automatically reduce the swing speed of the laser emitter 115, achieving secondary damping of the laser emitter 115, preventing the laser from deviating due to the vibration of the laser emitter 115, and ensuring the accuracy of the battery foil shape detection results.

[0047] Finally, the battery foil is transported along the first direction by the conveyor platform 300, and then it is inspected again.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A static plate shape measuring instrument for detecting the plate shape of battery foil, characterized in that, include: A conveying platform for placing battery foil; A movable frame, which is capable of moving on a conveying platform along a first direction, the first direction being the winding direction of the battery foil; A detection component is mounted on a movable frame and is movable on the movable frame along a second direction perpendicular to a first direction, both of which are horizontal. The detection component includes: A drive motor, the drive motor having an output terminal; A laser emitter is used to emit a laser beam toward the surface of a battery foil. In its initial position, the laser emitter extends in the vertical direction, with its lower end being the emitting end. A frame, which is movable along a second direction on a movable frame, wherein the drive motor and the laser emitter are both mounted on the frame; A swing transmission mechanism is provided to cause a laser emitter to reciprocate around an axis in a first direction, thereby scanning the surface of a battery foil. The swing transmission mechanism includes a drive shaft rotatably mounted on a frame and a continuously variable transmission (CVT) mechanism. One end of the drive shaft is connected to the output of a drive motor via the CVT mechanism, and the other end is connected to the laser emitter via a flexible coupling. The laser emitter has a first limit position and a second limit position during the reciprocating swing. The second limit position is defined as forward, the first limit position as backward, and the first limit position as the initial position. The swing angle of the laser emitter is an acute angle. The CVT mechanism includes a driven gear wheel mounted on the drive shaft and a driving conical wheel located at the output of the drive motor. The driving conical wheel and the driven gear wheel are in frictional engagement, thereby driving the drive motor to rotate the drive shaft via the driving conical wheel and the driven gear wheel, which in turn drives the laser emitter to reciprocate. The driven gear wheel can slide along the axial direction of the drive shaft to change the transmission ratio between the driving conical wheel and the driven gear wheel. A fixed receiver is disposed at the emitting end of the laser emitter and is used to receive the vertical laser reflected by the battery foil; Two movable receiving plates are provided, located on both sides of the laser emitter along the second direction. They can move synchronously along the second direction as the laser emitter swings, thereby receiving the tilted laser reflected by the protrusions or depressions on the battery foil.

2. The static plate shape measuring instrument according to claim 1, characterized in that, A mounting bracket is provided at one end of the drive shaft near the laser emitter. A shock-absorbing damping component is provided between the laser emitter and the mounting bracket. The shock-absorbing damping component is used to dampen the laser emitter. There are two shock-absorbing damping components, which are respectively located on both sides of the laser emitter along the second direction. Each shock-absorbing damping component includes a damping cylinder and a damping rod. Both the damping cylinder and the damping rod are arc-shaped, and their axes extend along the first direction. The damping cylinder is fixedly mounted on the mounting bracket and is filled with hydraulic oil. The damping rod is slidably mounted in the damping cylinder, and its upper and lower ends extend from the upper and lower ends of the damping cylinder, respectively. The upper ends of both damping rods are connected to the side wall of the laser emitter.

3. The static plate shape measuring instrument according to claim 2, characterized in that, Both damping rods have a top block at their lower ends. The mounting frame has a trigger block located between the two damping rods. The trigger block has two inclined surfaces, and the top block corresponds to and slides with the inclined surfaces. The frame also has a speed adjustment mechanism. When the laser emitter swings to the first or second limit position, the top block on one of the damping rods can push against the corresponding inclined surface on the trigger block, thereby driving the trigger block to move downward. The downward movement of the trigger block can trigger the speed adjustment mechanism, which in turn adjusts the swing speed of the laser emitter.

4. The static plate shape measuring instrument according to claim 3, characterized in that, The speed adjustment mechanism includes a sliding frame, a planetary gear transmission mechanism, and a lead screw. The sliding frame is slidably mounted on the frame in the vertical direction and is located below the trigger block. The upper surface of the sliding frame has an arc-shaped groove, the axis of which extends along a first direction. The lower end of the trigger block can reciprocate along the inner wall of the arc-shaped groove. The lead screw is rotatably mounted on the frame and parallel to the transmission shaft. An adjusting slider is threaded onto the lead screw and is fixedly connected to the driven gear. The planetary gear transmission mechanism is located between the sliding frame and the lead screw. When the trigger block moves downward, it pushes the sliding frame to move downward synchronously. The sliding frame drives the lead screw to rotate through the planetary gear transmission mechanism. The rotation of the lead screw drives the adjusting slider to move along the length of the lead screw, thereby causing the driven gear to slide synchronously along the axial direction of the transmission shaft, thus changing the transmission ratio between the driving conical gear and the driven gear.

5. The static plate shape measuring instrument according to claim 4, characterized in that, A first spring is provided between the trigger block and the mounting bracket. The first spring has a tendency to move the trigger block upward. A limiting rod is provided at the bottom of the sliding bracket. The limiting rod extends in the vertical direction and is slidably disposed on the frame. A second spring is provided between the limiting rod and the frame. The second spring has a tendency to make the sliding bracket fit against the trigger block upward.

6. The static plate shape measuring instrument according to claim 1, characterized in that, The frame is also equipped with a vertical fixed plate, on which a first rack plate extending along a second direction is provided. A drive gear is coaxially provided on the transmission shaft, and the drive gear meshes with the first rack plate. Each movable receiving plate is provided with a second rack plate, which is parallel to the first rack plate. Two first gears are rotatably provided on the frame, with the axis of the first gear extending along a first direction. Each first gear corresponds to and meshes with a second rack plate. Both first gears mesh with the first rack plate simultaneously. When the laser emitter oscillates back and forth between the first and second extreme positions, the transmission shaft drives the drive gear to oscillate back and forth, thereby driving the first rack plate to oscillate back and forth along the second direction. The first rack plate drives the two movable receiving plates to oscillate back and forth synchronously along the second direction through the two first gears, thereby realizing that the movable receiving plates move synchronously with the oscillation of the laser emitter.

7. The static plate shape measuring instrument according to claim 6, characterized in that, The frame is provided with two limiting slots, each corresponding to a movable receiving plate, and each movable receiving plate can slide in the corresponding limiting slot along the second direction.

8. The static plate shape measuring instrument according to claim 1, characterized in that, The conveying platform is provided with a drive roller and an abutment roller at both ends along the first direction. The drive roller is used to wind up the battery foil so that the battery foil moves along the first direction. The abutment roller is used to support and position the rolled battery foil.

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