On-line thickness measuring device for incoming material of winding pole piece

Abstract

The utility model discloses an on-line thickness measuring device for incoming materials of winding pole pieces. The on-line thickness measuring device comprises a shell, a tension adjusting assembly, a third passing roller, a U-shaped rack, a moving assembly, a sensor A and a sensor B, a tension adjusting assembly, a U-shaped rack and a third passing roller are sequentially arranged in the shell from left to right at intervals, the third passing roller is horizontally and longitudinally arranged and rotationally connected with the shell, and then the pole piece is conveyed to a winding machine through the third passing roller after being subjected to tension adjustment through the tension adjusting assembly; two opening ends of the U-shaped rack are horizontally, longitudinally and forwards arranged and are arranged on the upper side and the lower side of the pole piece at intervals; a sensor A is arranged on the end face of the upper side opening end of the U-shaped rack, and a sensor B is arranged on the end face of the lower side opening end of the U-shaped rack. The U-shaped rack performs horizontal and longitudinal reciprocating motion through the moving assembly, and the thickness of the pole piece is measured through the cooperation of the sensor A and the sensor B. According to the utility model, real-time thickness monitoring can be conveniently carried out on the pole piece, and the pole piece with over-limit thickness can be found in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery production technical field, concretely relates to a kind of winding pole piece incoming material online thickness measuring device. BACKGROUND

[0002] In the working process of winding machine, the tab of bare cell is frequently dislocated, which is mainly caused by the frequent fluctuation of the thickness of pole piece incoming material. Such fluctuation not only leads to the instability of the alignment of the tab of cell, but also causes the loss of yield. Currently, the thickness of pole piece is measured manually, which is time-consuming and laborious and affects the overall production efficiency. Therefore, the above problems need to be solved urgently. SUMMARY

[0003] The utility model wants to solve the technical problem to provide a kind of winding pole piece incoming material online thickness measuring device, by the cooperation of moving assembly, U-shaped rack, sensor A and sensor B, it is convenient to carry out real-time thickness monitoring to pole piece, save time and effort, so that the pole piece with thickness overrun can be found in time, and the working efficiency is improved.

[0004] To solve the above technical problems, the utility model takes the following technical scheme: a kind of winding pole piece incoming material online thickness measuring device of the utility model, its innovation point is that: including shell, tension adjusting assembly, third roller, U-shaped rack, moving assembly, sensor A and sensor B;The shell is hollow cuboid structure arranged horizontally and transversely, and its left and right sides are open type, and are spaced apart and arranged on the left side of winding machine;Tension adjusting assembly, U-shaped rack and third roller are sequentially and spaced apart arranged in the inside of the shell from left to right, the third roller is arranged horizontally and longitudinally in the inside of the shell right side, and is connected with the shell around its own axial rotation, and then the pole piece is sent to winding machine after tension adjusting assembly is carried out tension adjustment by third roller;The open slot of the U-shaped rack is arranged along horizontal transverse direction, and the two open ends of the U-shaped rack are arranged horizontally and longitudinally forward, and are spaced apart and arranged on the upper and lower sides of the pole piece between tension adjusting assembly and third roller;Sensor A is arranged on the upper side open end face of the U-shaped rack, and the detection end of sensor A is arranged vertically downward;Sensor B is arranged on the lower side open end face of the U-shaped rack, and the detection end of sensor B is arranged vertically upward;The U-shaped rack is moved horizontally and longitudinally by moving assembly, and the thickness of the pole piece is measured by the cooperation of sensor A and sensor B.

[0005] Preferably, it further includes fourth shaft;Fourth shaft is coaxially arranged on the both ends of the third roller, the one end of each fourth shaft away from the third roller is rotatably connected with the corresponding position of the front and rear inner surfaces of the shell, and the one end of each fourth shaft close to the third roller is fixedly connected with the both ends of the third roller by flange, so that the third roller is rotatably connected with the shell around its own axial direction.

[0006] Preferably, the third roller has a length matching the width of the pole piece.

[0007] Preferably, the tension adjusting assembly comprises a first roller, a second roller, an electric push rod, a bracket and an adjusting roller; a first roller, an adjusting roller and a second roller are arranged in a U shape relative to the left side of the U-shaped frame inside the shell, and are arranged horizontally and longitudinally, and the lengths of the roller surfaces of the first roller, the adjusting roller and the second roller respectively match the width of the pole piece; the upper ends of the first roller and the third roller are arranged horizontally and collinearly, and the front and rear ends of the first roller are respectively connected to the shell in an axial rotation manner; the upper ends of the second roller and the third roller are arranged horizontally and collinearly, and the front and rear ends of the second roller are respectively connected to the shell in an axial rotation manner; an electric push rod is vertically arranged on the upper surface of the shell relative to the position of the adjusting roller, the pushing end of the electric push rod extends vertically downward into the interior of the shell, and the upper end of the bracket is fixedly connected to the electric push rod in a screwing manner; the front and rear ends of the adjusting roller are respectively connected to the lower end of the bracket in an axial rotation manner, and are arranged in a spaced manner in the area below the first roller, and under the driving of the electric push rod, the adjusting roller moves vertically up and down between the first roller and the second roller, so that the pole piece is transmitted in a U-shaped path through the first roller, the adjusting roller and the second roller in sequence, and after the tension of the pole piece is adjusted, the pole piece is transmitted to the winding machine through the third roller.

[0008] Preferably, the first roller further comprises a first rotating shaft; a first rotating shaft is coaxially arranged at each end of the first roller, one end of each first rotating shaft is rotatably connected to the corresponding position of the front and rear inner surfaces of the shell, and the other end of each first rotating shaft is fixedly connected to the two ends of the first roller in a coaxial screwing manner through a flange, so that the first roller is rotatably connected to the shell in an axial rotation manner.

[0009] Preferably, the second roller further comprises a second rotating shaft; a second rotating shaft is coaxially arranged at each end of the second roller, one end of each second rotating shaft is rotatably connected to the corresponding position of the front and rear inner surfaces of the shell, and the other end of each second rotating shaft is fixedly connected to the two ends of the second roller in a coaxial screwing manner through a flange, so that the second roller is rotatably connected to the shell in an axial rotation manner.

[0010] Preferably, a third rotating shaft is further arranged coaxially at two ends of the adjusting roller, one end of each third rotating shaft is rotatably connected to a corresponding position of the lower end of the support, and the other end of each third rotating shaft is fixedly connected to the two ends of the adjusting roller through flanges, so that the adjusting roller is rotatably connected to the support.

[0011] Preferably, the horizontal longitudinal reciprocating motion of the U-shaped frame does not interfere with the horizontal transmission of the pole piece, and the moving assembly comprises a fixed seat, a side plate, a reinforcing plate, a motor, a threaded rod, a guide rail, a sliding block and a bottom plate; the fixed seat is horizontally fixed on the inner bottom surface of the shell relative to the position of the U-shaped frame and located at the rear side of the pole piece, and the side plates are vertically arranged on the upper surface of the fixed seat; the threaded rod is horizontally and longitudinally arranged between the two side plates, and the two ends of the threaded rod are rotatably connected to the corresponding side plates, and the rear end of the threaded rod extends horizontally and perpendicularly out of the corresponding side plate and is connected to the output end of the motor; the motor is horizontally and longitudinally arranged and fixedly connected to the rear side of the side plate; the guide rails are horizontally and symmetrically arranged on the upper and lower sides of the threaded rod relative to the two side plates, and the two ends of each guide rail are fixedly connected to the corresponding side plate; the two sliding blocks are vertically arranged between the two side plates and are fixedly connected to the threaded rod and the guide rail, respectively; the bottom plate is horizontally and longitudinally arranged, and the lower surface of the bottom plate is fixedly connected to the upper surface of the two sliding blocks, respectively, and the bottom plate moves horizontally and longitudinally through the sliding blocks; the U-shaped frame is fixedly installed on the upper surface of the bottom plate and moves horizontally and longitudinally with the bottom plate, so that the thickness of the advancing pole piece is measured by the cooperation of the sensor A and the sensor B.

[0012] Preferably, the horizontal longitudinal motion stroke of the U-shaped frame ensures that the sensor A and the sensor B can measure the thickness of the pole piece in the width direction.

[0013] Preferably, the sensor A and the sensor B are symmetrically arranged relative to the pole piece.

[0014] The beneficial effects of the present application are as follows:

[0015] (1) The cooperation of the moving assembly, the U-shaped frame, the sensor A and the sensor B facilitates real-time thickness monitoring of the pole piece, saves time and effort, and thus the pole piece with excessive thickness can be found in time, and the work efficiency is improved.

[0016] (2) The utility model discloses a tension adjusting assembly is set up, and the tension of pole piece is adjusted conveniently, thereby ensuring the accuracy of pole piece thickness measurement. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed in the embodiment will be simply introduced below, and obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can also be obtained according to these drawings without creating labor for the ordinary skilled in the art.

[0018] Figure 1 It is a structural schematic view of the utility model discloses a kind of winding pole piece incoming material online thickness measuring device.

[0019] Figure 2 It is Figure 1 A-A view in it.

[0020] Wherein, 1-shell; 2-first rotating shaft; 3-first roller; 4-second rotating shaft; 5-second roller; 6-electric push rod; 7-bracket; 8-third rotating shaft; 9-adjusting roller; 10-pole piece; 11-winding machine; 12-U-shaped rack; 13-bottom plate; 14-sensor A; 15-sensor B; 16-fixing base; 17-side plate; 18-motor; 19-threaded rod; 20-guide rail; 21-sliding block; 22-stiffener; 23-fourth rotating shaft; 24-third roller. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model will be clearly and completely described below through specific embodiment.

[0022] The utility model discloses a kind of winding pole piece incoming material online thickness measuring device, including shell 1, tension adjusting assembly, third roller 24, U-shaped rack 12, moving assembly, sensor A 14 and sensor B 15;Specific structure as shown in Figure 1 、 Figure 2 Shown, shell 1 is hollow cuboid structure of horizontal transverse arrangement, and its left and right sides are open type, and interval is set in winding machine 11 left side;Tension adjusting assembly, U-shaped rack 12 and third roller 24 are sequentially and interval arranged in the inside of shell 1 from left to right, third roller 24 is horizontally longitudinally arranged in the inside of shell 1 right side, and is connected with shell 1 around its own axial rotation, and then pole piece 10 is sent to winding machine 11 after tension adjusting assembly is carried out tension adjustment to third roller 24;Wherein, the roller surface length of third roller 24 is matched with the width of pole piece 10.

[0023] As Figure 1 、 Figure 2As shown, fourth rotating shafts 23 are coaxially provided at both ends of the third roller 24, and one end of each fourth rotating shaft 23 away from the third roller 24 is rotatably connected to the corresponding positions of the front and rear inner surfaces of the shell 1, and the end close to the third roller 24 is coaxially screwed and fixed to the two ends of the third roller 24 through flanges, thereby making the third roller 24 rotatably connected to the shell 1 around its own axis.

[0024] The utility model tension adjustment assembly includes a first roller 3, a second roller 5, an electric push rod 6, a bracket 7 and an adjustment roller 9; Figure 1 、 Figure 2 As shown, inside the shell 1, relative to the left side of the U-shaped frame 12, a first passing roller 3, an adjusting roller 9 and a second passing roller 5 are also provided in a U shape. The first passing roller 3, the adjusting roller 9 and the second passing roller 5 are all arranged horizontally and longitudinally, and the roller surface lengths thereof are matched with the width of the pole piece 10 respectively; the upper end of the first passing roller 3 and the upper end of the third passing roller 24 are arranged horizontally in a collinear manner, and the front and rear ends thereof are respectively connected to the shell 1 for rotation around their own axes; the upper end of the second passing roller 5 and the upper end of the third passing roller 24 are arranged horizontally in a collinear manner, and the front and rear ends thereof are respectively connected to the shell 1 for rotation around their own axes; on the upper surface of the shell 1 relative to the adjusting roller 9, An electric push rod 6 is also vertically provided, and the pushing end of the electric push rod 6 extends vertically downward to the interior of the shell 1, and is screwed and fixed to the upper end of the bracket 7. The front and rear ends of the adjusting roller 9 are respectively connected to the lower end of the bracket 7 for rotation around its own axis, and are arranged at intervals in the area below the first passing roller 3. Under the drive of the electric push rod 6, the adjusting roller 9 moves vertically up and down between the first passing roller 3 and the second passing roller 5, so that the pole piece 10 is transmitted in a U-shaped path through the first passing roller 3, the adjusting roller 9 and the second passing roller 5 in turn. After the tension of the pole piece 10 is adjusted, it is transmitted to the winding machine 11 via the third passing roller 24.

[0025] like Figure 1 As shown, first rotating shafts 2 are coaxially provided at both ends of the first roller 3, and one end of each first rotating shaft 2 away from the first roller 3 is rotatably connected to the corresponding positions of the front and rear inner surfaces of the shell 1, and the end close to the first roller 3 is coaxially screwed and fixed to the two ends of the first roller 3 through flanges, thereby making the first roller 3 rotatably connected to the shell 1 around its own axis.

[0026] like Figure 1 As shown, second rotating shafts 4 are coaxially provided at both ends of the second roller 5, and one end of each second rotating shaft 4 away from the second roller 5 is rotatably connected to the corresponding positions of the front and rear inner surfaces of the shell 1, and the end close to the second roller 5 is coaxially screwed and fixed to the two ends of the second roller 5 through flanges, thereby making the second roller 5 rotatably connected to the shell 1 around its own axis.

[0027] like Figure 1As shown, the third rotating shaft 8 is coaxially arranged at the two ends of the adjusting roller 9, and the end of each third rotating shaft 8 away from the adjusting roller 9 is rotatably connected to the corresponding position of the lower end of the support 7, and the end of each third rotating shaft 8 close to the adjusting roller 9 is coaxially screwed and fixed to the two ends of the adjusting roller 9 through the flanges, so that the adjusting roller 9 is rotatably connected to the support 7 around its own axis. The upper limit position of the electric push rod 6 needs to ensure that the lower end of the adjusting roller 9 is above the horizontal plane where the upper end of the first roller 3 is located, and the lower limit position of the electric push rod 6 needs to ensure that the upper end of the adjusting roller 9 is below the horizontal plane where the lower end of the first roller 3 is located, so as to ensure the tension adjusting effect.

[0028] The opening groove of the U-shaped frame 12 is arranged horizontally and transversely, and the two open ends of the U-shaped frame 12 are arranged horizontally and longitudinally forward, and are arranged at the upper and lower sides of the pole piece 10 between the tension adjusting assembly and the third roller 24. Figure 1 , Figure 2 As shown, the sensor A14 is arranged on the upper side of the U-shaped frame 12, and the detection end of the sensor A14 is arranged vertically downward. The sensor B15 is arranged on the lower side of the U-shaped frame 12, and the detection end of the sensor B15 is arranged vertically upward. The U-shaped frame 12 moves horizontally and longitudinally through the moving assembly, and the thickness of the pole piece 10 is measured through the cooperation of the sensor A14 and the sensor B15.

[0029] The horizontal and longitudinal reciprocating movement of the U-shaped frame 12 and the horizontal transmission action of the pole piece 10 do not interfere with each other, and the moving assembly includes a fixed seat 16, a side plate 17, a reinforcing plate 22, a motor 18, a threaded rod 19, a guide rail 20, a sliding block 21 and a bottom plate 13. Figure 1 , Figure 2 As shown, the fixed seat 16 is horizontally and fixedly arranged on the inner bottom surface of the shell 1 relative to the U-shaped frame and located at the rear side of the pole piece 10, and the side plates 17 are vertically and transversely arranged on the upper surface of the fixed seat 16 and symmetrically arranged forward and backward. The threaded rod 19 is horizontally and longitudinally arranged at the middle position between the two side plates 17, the two ends of the threaded rod 19 are rotatably connected to the corresponding side plates 17, the rear end of the threaded rod 19 extends out of the corresponding side plate 17 horizontally and vertically, and the rear end of the threaded rod 19 is connected to the output end of the motor 18. The motor 18 is horizontally and longitudinally arranged and screwed and fixed to the rear side of the side plate 17.

[0030] As shown, Figure 1 , Figure 2As shown, the guide rails 20 are horizontally and symmetrically arranged relative to the two side plates 17 on the upper and lower sides of the threaded rod 19, and the two ends of each guide rail 20 are respectively screwed and fixed with the corresponding side plate 17; two sliders 21 are vertically arranged between the two side plates 17 and are respectively screwed with the threaded rod 19 and are respectively connected with each guide rail 20 in horizontal and longitudinal sliding manner; the bottom plate 13 is horizontally and longitudinally arranged, and the lower surface thereof is fixedly connected with the upper surfaces of the two sliders 21 on the rear side, and moves horizontally and longitudinally through the sliders 21; the U-shaped rack 12 is fixedly installed on the upper surface of the bottom plate 13 and moves horizontally and longitudinally with the bottom plate 13, so as to measure the thickness of the moving pole piece 10 through the cooperation of the sensor A 14 and the sensor B 15. The horizontal and longitudinal movement stroke of the U-shaped rack 12 needs to ensure that the sensor A 14 and the sensor B 15 can measure the thickness of the pole piece 10 in the width direction range; the sensor A 14 and the sensor B 15 are symmetrically arranged relative to the pole piece 10, and the distance between the two is L ab .

[0031] The working principle of the utility model is: first, the tension of the pole piece 10 is adjusted through the tension adjusting assembly, and the pole piece 10 is conveyed to the winding machine 11 through the third roller 24; in this process, the U-shaped rack 12 moves horizontally and longitudinally with the bottom plate 13, the distance between the upper surface of the U-shaped rack 12 and the pole piece 10 is L a , and the distance between the lower surface of the U-shaped rack 12 and the pole piece 10 is L b , so that the thickness H of the pole piece 10 can be calculated. ab -L a -L b .

[0032] The utility model has the advantages of:

[0033] (1) The utility model discloses a moving assembly, a U-shaped rack 12, a sensor A 14 and a sensor B 15 are used in cooperation, so that the thickness of the pole piece 10 can be monitored in real time, time and labor are saved, and the working efficiency is improved.

[0034] (2) The utility model discloses a tension adjusting assembly, which is convenient for adjusting the tension of the pole piece 10, so that the accuracy of the thickness measurement of the pole piece 10 is ensured.

[0035] The above-described embodiments are merely preferred embodiments of the present application and are not intended to limit the design concept and scope of the present application. Without departing from the design concept of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope of the present application. The technical content claimed by the present application has been entirely recorded in the technical requirements.

Claims

1. An online thickness measuring device for incoming wound pole pieces, characterized by: It includes a shell, a tension adjustment component, a third roller, a U-shaped frame, a moving component, a sensor A and a sensor B; the shell is a hollow rectangular structure arranged horizontally, and its left and right sides are open, and are arranged at intervals on the left side of the winding machine; inside the shell, from left to right, there are also intervals of tension adjustment components, U-shaped frames and third rollers, the third roller is arranged horizontally and longitudinally on the right side of the inside of the shell, and is connected to the shell around its own axial rotation, so that the pole piece is tension-adjusted by the tension adjustment component and then sent to the winding machine through the third roller; The opening slot of the U-shaped frame is arranged horizontally and transversely, and its two open ends are arranged horizontally and longitudinally forward, and are spaced apart on the upper and lower sides of the pole piece located between the tension adjustment assembly and the third roller; a sensor A is provided on the end face of the upper open end of the U-shaped frame, and the detection end of the sensor A is arranged vertically downward; a sensor B is provided on the end face of the lower open end of the U-shaped frame, and the detection end of the sensor B is arranged vertically upward; the U-shaped frame performs horizontal and longitudinal reciprocating motion through the moving assembly, and the thickness of the pole piece is measured by the cooperation of sensor A and sensor B.

2. The online thickness measurement device for wound pole piece material according to claim 1, characterized in that: It also includes a fourth rotating shaft; fourth rotating shafts are coaxially provided at both ends of the third roller, and each of the fourth rotating shafts is rotatably connected to the corresponding positions of the front and rear inner surfaces of the shell at one end away from the third roller, and its end close to the third roller is coaxially screwed and fixed to the two ends of the third roller through a flange, so that the third roller is rotatably connected to the shell around its own axis.

3. The online thickness measurement device for wound pole piece material according to claim 2, characterized in that: The roller surface length of the third roller matches the width of the pole piece.

4. The online thickness measurement device for wound pole piece material according to claim 1, characterized in that: The tension adjustment assembly includes a first roller, a second roller, an electric push rod, a bracket and an adjusting roller; inside the shell, relative to the left side of the U-shaped frame, a first roller, an adjusting roller and a second roller are also U-shaped, and the first roller, the adjusting roller and the second roller are all arranged horizontally and longitudinally, and the roller surface lengths thereof are matched with the width of the pole piece respectively; the upper end of the first roller and the upper end of the third roller are arranged horizontally collinearly, and the front and rear ends thereof are respectively connected to the shell for rotation around their own axis; the upper end of the second roller and the upper end of the third roller are arranged horizontally collinearly, and the front and rear ends thereof are respectively connected to the shell for rotation around their own axis Connection; an electric push rod is also vertically provided on the upper surface of the shell relative to the position of the adjusting roller, and the pushing end of the electric push rod extends vertically downward to the interior of the shell, and is screwed and fixed to the upper end of the bracket, and the front and rear ends of the adjusting roller are respectively connected to the lower end of the bracket for rotation around its own axis, and are arranged at intervals in the area below the first roller, and under the drive of the electric push rod, the adjusting roller moves vertically up and down between the first roller and the second roller, so that the pole piece is transmitted in a U-shaped path through the first roller, the adjusting roller and the second roller in sequence, and after the tension of the pole piece is adjusted, it is transmitted to the winding machine via the third roller.

5. The online thickness measuring device for incoming wound pole pieces according to claim 4, characterized in that: It also includes a first rotating shaft; first rotating shafts are coaxially provided at both ends of the first roller, and one end of each first rotating shaft away from the first roller is rotatably connected to the corresponding positions of the front and rear inner surfaces of the shell, and the end close to the first roller is coaxially screwed and fixed to the two ends of the first roller through a flange, so that the first roller is rotatably connected to the shell around its own axis.

6. The online thickness measurement device for wound pole piece material according to claim 4, characterized in that: It also includes a second rotating shaft; second rotating shafts are coaxially provided at both ends of the second roller, and one end of each second rotating shaft away from the second roller is rotatably connected to the corresponding positions of the front and rear inner surfaces of the shell, and the end close to the second roller is coaxially screwed and fixed to the two ends of the second roller through a flange, so that the second roller is rotatably connected to the shell around its own axis.

7. The on-line thickness measuring device for incoming wound pole pieces according to claim 4, characterized in that: The cam is secured to the chassis and has a pivotal position about the first leg of the second adjustment member, and the pivotal position about the first leg of the second adjustment member is adjusted to a position which is axially opposite to the chassis.

8. The online thickness measurement device for wound pole piece material according to claim 1, characterized in that: The horizontal and longitudinal reciprocating motion of the U-shaped frame does not interfere with the horizontal transmission action of the pole piece, and the moving assembly includes a fixed seat, side plates, a reinforcing plate, a motor, a threaded rod, a guide rail, a slider and a bottom plate; a fixed seat is also horizontally fixedly arranged on the inner bottom surface of the shell relative to the position of the U-shaped frame and at the rear side of the pole piece, and side plates arranged vertically and horizontally are symmetrically arranged at front and rear intervals on the upper surface of the fixed seat; a threaded rod is also horizontally and longitudinally arranged in the middle position between the two side plates, and the two ends of the threaded rod are respectively rotatably connected to the corresponding side plates, and the rear end thereof extends horizontally and vertically from the corresponding side plates and is linked to the output end of the motor; the motor is arranged horizontally and longitudinally and is screwed and fixed to the side plate on the rear side; on the screw Guide rails are provided horizontally symmetrically and parallely on the upper and lower sides of the threaded rod relative to the two side plates, and the two ends of each guide rail are screwed and fixed to the corresponding side plates; two sliders are sleeved on the threaded rod at front and rear intervals, and the two sliders are vertically arranged between the two side plates, and are screwed to the threaded rods respectively, and are horizontally and longitudinally slidably connected to each guide rail; the bottom plate is arranged horizontally and longitudinally, and its lower surface is fixedly connected to the upper surfaces of the two sliders at the rear side, and performs horizontal and longitudinal movement through the sliders; the U-shaped frame is fixedly installed on the upper surface of the bottom plate, and performs horizontal and longitudinal reciprocating movement with the bottom plate, and then the thickness of the advancing pole piece is measured by the cooperation of sensor A and sensor B.

9. The online thickness measuring device for incoming wound pole pieces according to claim 8, characterized in that: The horizontal and longitudinal movement stroke of the U-shaped frame must ensure that sensors A and B can measure the thickness of the pole piece in the width direction.

10. The online thickness measurement device for wound pole piece material according to claim 1, characterized in that: The sensor A and the sensor B are symmetrically arranged with respect to the pole piece.

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