Deviation rectifying mechanism in battery pole piece belt conveying process

Abstract

The utility model discloses a deviation rectifying mechanism for a battery pole piece belt conveying process, and relates to the technical field of battery processing. The deviation rectifying device comprises a base, and a deviation rectifying roller assembly, a shifting mechanism and a deviation rectifying detection assembly are arranged on the base. A bearing seat and a rotating shaft are arranged below the deviation rectifying roller assembly, the bearing seat is vertically fixed to the base, one end of the rotating shaft is fixedly connected with the bottom of the deviation rectifying roller assembly, the other end of the rotating shaft is coaxially connected with the bearing seat, and a kidney-shaped sliding groove is formed in the deviation rectifying roller assembly. The shifting mechanism comprises a stepping motor, a ball screw pair and a shifting block, an output shaft of the stepping motor is provided with a synchronizing wheel assembly in transmission connection with the ball screw pair, the shifting block is fixed to a nut of the ball screw pair, a connecting shaft is vertically fixed to the top of the shifting block, and the connecting shaft upwards penetrates through the kidney-shaped sliding groove and is rotationally connected with a connecting bearing; the connecting bearing is in sliding connection with the kidney-shaped sliding groove. And the deviation correction detection assembly is positioned below one side of the deviation correction roller assembly. The deviation rectifying mechanism for the battery pole piece belt conveying process can achieve automatic deviation rectifying, and deviation rectifying is accurate and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a deviation-correcting mechanism for a tape-walking process of a cylindrical lithium battery pole piece. Background Art

[0002] In the processing of cylindrical lithium batteries, a winding process is required to stack the raw materials in the order of negative electrode sheet, diaphragm, positive electrode sheet, and diaphragm, and roll them into cylindrical batteries through a winder, and then put them in a metal shell. However, during the winding and tape-feeding process of the winder, the battery electrode may deviate, causing the winding position to tilt and unable to meet subsequent processing requirements. The traditional deviation correction method is to manually adjust the electrode manually, which has low adjustment accuracy and efficiency. Therefore, it is urgent to provide a deviation correction mechanism for the tape-feeding process of cylindrical lithium battery electrodes. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a deviation correction mechanism for a battery pole piece during belt conveying, which can realize automatic deviation correction and the deviation correction is accurate and reliable.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A battery pole piece belt guiding process correction mechanism, comprises a base, a correction roller assembly, a toggle mechanism and a correction detection assembly are arranged on the base; a bearing seat and a rotating shaft are arranged below the correction roller assembly, the bearing seat is vertically fixed on the base, one end of the rotating shaft is fixedly connected to the bottom of the correction roller assembly, and the other end is coaxially connected to the bearing seat, and a waist-shaped slide groove is arranged on the correction roller assembly; the toggle mechanism comprises a stepping motor, a ball screw pair and a toggle block, the stepping motor and the ball screw pair are horizontally arranged on the base and are parallel to each other, the output shaft of the stepping motor is provided with a synchronous wheel assembly connected to the ball screw pair for transmission, the toggle block is fixed on the nut of the ball screw pair, and a connecting shaft is vertically fixed on the top of the toggle block, the connecting shaft passes through the waist-shaped slide groove upward, and is rotatably connected with a connecting bearing, the connecting bearing is slidably connected to the waist-shaped slide groove, the toggle mechanism is used to drive the correction roller assembly to rotate around the axis of the rotating shaft, thereby driving the battery pole piece to swing; the correction detection assembly is located below one side of the correction roller assembly, and is used to detect the offset of the battery pole piece.

[0006] In some embodiments, the deviation-correcting roller assembly includes a base plate, two support plates and at least two roller shafts. The base plate is horizontally arranged, and the two support plates are upright and fixed at both ends of the base plate respectively. The two roller shafts are arranged in parallel, and the two ends of the roller shafts are rotatably connected to the two support plates respectively; a waist-shaped slide groove is arranged on the base plate; and one end of the rotating shaft is fixedly connected to the base plate.

[0007] In some embodiments, the toggle mechanism also includes a pulling assembly, which includes a pull rod and a tension spring. The pull rod is vertically fixed on the top of the base plate and is located next to the waist-shaped slide groove. One end of the tension spring is connected to the connecting shaft, and the other end is connected to the pull rod.

[0008] Compared with the prior art, the present invention achieves at least the following beneficial effects:

[0009] The utility model provides a toggle mechanism to drive the deflection correction roller assembly to rotate around the axis of the rotating shaft, and the battery pole piece is conveyed from one side of the deflection correction roller assembly through the two rollers and through the deflection correction detection assembly under the other side. The deflection correction detection assembly is preset with a pole piece offset center value. When the deflection correction detection assembly detects that the edge of the pole piece deviates from the set center value, the stepper motor drives the ball screw pair through the synchronous wheel assembly, and the ball screw pair drives the toggle block to move. The toggle block drives the deflection correction roller assembly to rotate around the axis of the rotating shaft through the connecting shaft and the connecting bearing, thereby driving the battery pole piece to swing until the edge of the pole piece is reset to the center value of the offset. At this point, the working cycle is completed and automatic deflection correction can be achieved. The deflection correction detection assembly ensures the deflection correction accuracy. The toggle mechanism adopts a structure combined with a stepper motor, a ball screw pair and a synchronous wheel assembly, which makes the toggle mechanism assembly and maintenance more convenient, and it is convenient to disassemble and replace damaged parts separately during use. The combination of the stepper motor and the ball screw pair makes the deflection correction more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] One or more embodiments of the present invention will now be described by way of example only with reference to the accompanying drawings, in which:

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0012] Figure 2 for Figure 1 A front view of an embodiment;

[0013] Figure 3 for Figure 1 A top view of an embodiment;

[0014] Figure 4 for Figure 1 A schematic structural diagram of a deviation correction detection component of an embodiment;

[0015] Figure 5 for Figure 1 A schematic structural diagram of the deflection-correcting swing angle sensor and the slot-type photoelectric sensor of the embodiment.

[0016] The numbers in the figure are: 1. base; 2. deviation correction roller assembly; 21. bottom plate; 22. support plate; 23. roller shaft; 3. toggle mechanism; 31. stepper motor; 32. ball screw pair; 33. toggle block; 331. connecting shaft; 332. connecting bearing; 34. pulling assembly; 341. pull rod; 342. tension spring; 4. deviation correction detection assembly; 41. sensor bracket; 42. deviation correction sensor; 43. adjustment bracket; 431. adjustment seat; 432. sliding shaft; 433. sliding block; 434. compression spring; 435. adjustment block; 436. differential head; 5. bearing seat; 6. rotating shaft; 7. waist-shaped slide groove; 8. synchronous wheel assembly; 81. driving wheel; 82. driven wheel; 83. synchronous belt; 9. deviation correction swing angle sensor; 10. slot-type photoelectric sensor. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. However, it should be understood that the present application can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided here to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0018] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features directly contacting, or it can include the first and second features not being in direct contact but contacting through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0019] like Figures 1 to 5 As shown, the battery pole piece guiding process correction mechanism provided in the embodiment of the present application includes a base 1, on which a correction roller assembly 2, a shifting mechanism 3 and a correction detection assembly 4 are provided.

[0020] A bearing seat 5 and a rotating shaft 6 are provided below the deviation correction roller assembly 2. The bearing seat 5 is vertically installed on the base 1. One end of the rotating shaft 6 is vertically fixedly connected to the bottom of the deviation correction roller assembly 2, and the other end is coaxially connected to the bearing seat 5. A waist-shaped slide groove 7 is provided on the deviation correction roller assembly 2; the toggle mechanism 3 is located below the deviation correction roller assembly 2, and the toggle mechanism 3 includes a stepping motor 31, a ball screw pair 32 and a toggle block 33. The stepping motor 31 and the ball screw pair 32 are horizontally arranged on the base 1 and are parallel to each other. The output shaft of the stepping motor 31 is provided with a synchronous wheel assembly 8, and is connected to the synchronous wheel assembly through the synchronous wheel assembly 8 is transmission connected to the ball screw pair 32, the toggle block 33 is fixedly connected to the nut of the ball screw pair 32, a connecting shaft 331 is vertically fixed on the top of the toggle block 33, a connecting bearing 332 is rotatably connected to the connecting shaft 331, the connecting bearing 332 is arranged in the waist-shaped slide groove 7, and is slidingly connected to the waist-shaped slide groove 7, the toggle block 33 is used to drive the deviation correction roller assembly 2 to rotate around the axis of the rotating shaft 6 on the XY plane, thereby driving the battery pole piece to correct the deviation; the deviation correction detection assembly 4 is located at the lower side of the deviation correction roller assembly 2, and it is used to detect the offset of the edge of the battery pole piece.

[0021] Optionally, the deviation-correcting roller assembly 2 includes a base plate 21, two support plates 22 and at least two roller shafts 23. The base plate 21 is horizontally arranged, and the two support plates 22 are respectively vertically fixedly connected to the two ends of the base plate 21. The two roller shafts 23 are arranged in parallel, and the two ends of the roller shafts 23 are respectively rotatably connected to the two support plates 22; the waist-shaped slide groove 7 is arranged on the base plate 21; one end of the rotating shaft 6 is vertically fixedly connected to the base plate 21.

[0022] refer to Figure 3Optionally, the synchronous wheel assembly 8 includes a driving wheel 81, a driven wheel 82 and a synchronous belt 83. The driving wheel 81 is coaxially connected to the output shaft of the stepper motor 31, and the driven wheel 82 is coaxially connected to one end of the ball screw pair 32. The driven wheel 82 and the driving wheel 81 are connected through the synchronous belt 83. The stepper motor 31 drives the driving wheel 81 to rotate, which can drive the driven wheel 82 to rotate synchronously, thereby driving the ball screw pair 32 to move. The ball screw pair 32 converts the rotational motion of the screw into the linear motion of the nut. The nut drives the toggle block 33 and the connecting shaft 331 to make linear motion, thereby pushing the bottom plate 21 to rotate around the axis of the rotating shaft 6, thereby driving the roller 23 to swing; during the rotation of the bottom plate 21, since the connecting bearing 332 is rotatably connected to the connecting shaft 331, the connecting bearing 332 can roll in the waist-shaped slide groove 7, thereby adaptively sliding along the waist-shaped slide groove 7. It should be noted that the toggle mechanism 3 uses a structure that combines a stepper motor 31 with a driving wheel 81, a driven wheel 82, a synchronous belt 83 and a ball screw pair 32, which makes the assembly and maintenance of the mechanism more convenient, and is beneficial for the separate disassembly and replacement of damaged parts during use; the ball screw pair 32 and the deviation correction roller assembly 2 are driven by the stepper motor 31 to work, and since the stepper motor 31 has the advantages of high precision, fast response, and smooth operation, the swing of the deviation correction roller assembly 2 is more accurate and reliable.

[0023] refer to Figure 2 and Figure 3 In one embodiment, the toggle mechanism 3 further includes a pulling assembly 34, which includes a pull rod 341 and a tension spring 342. The pull rod 341 is vertically fixed on the top of the bottom plate 21 and is located beside the waist-shaped slide groove 7. One end of the tension spring 342 is connected to the connecting shaft 331, and the other end is connected to the pull rod 341. It should be noted that when the toggle mechanism 3 drives the deviation correction roller assembly 2 to rotate back, the tension spring 342 can pull the pull rod 341 to drive the deviation correction roller assembly 2 to rotate back.

[0024] refer to Figure 4 Optionally, the correction detection component 4 includes a sensor bracket 41 and a correction sensor 42. The sensor bracket 41 is provided with an opening for the battery pole to pass through. The correction sensor 42 is installed on the sensor bracket 41 and is located beside the opening. The correction sensor 42 is used to detect the offset of the battery pole.

[0025] refer to Figure 4In one embodiment, the correction detection component 4 also includes an adjustment bracket 43, which includes an adjustment seat 431, a sliding shaft 432, a slider 433, a compression spring 434, an adjustment block 435 and a differential head 436. The adjustment seat 431 is installed on the base 1, the sliding shaft 432 is horizontally arranged, and one end of the sliding shaft 432 is fixedly connected to the adjustment seat 431, and the other end is fixedly connected to the adjustment block 435. The slider 433 is provided with a linear bearing and is slidably connected to the sliding shaft 432 through the linear bearing. The sensor bracket 41 is fixedly connected to the slider 433, the compression spring 434 is sleeved on the sliding shaft 432, and abuts between the slider 433 and the adjustment block 435. The differential head 436 is horizontally installed on the adjustment block 435, which is used to push the slider 433 to slide along the sliding shaft 432. It should be noted that when the correction detection component 4 is in use, the position of the correction sensor 42 can be adaptively adjusted according to the different sizes of battery electrodes. By rotating the knob of the differential head 436, the probe of the differential head 436 can push the slider 433 to slide to the left along the sliding shaft 432, and the slider 433 stretches the spring, thereby driving the correction sensor 42 to translate to the left; conversely, by rotating the knob of the differential head 436 so that the probe of the differential head 436 is away from the slider 433, the compression spring 434 is reset to its original length, thereby driving the slider 433 and the correction sensor 42 to translate to the right and reset.

[0026] refer to Figure 5 In one embodiment, the deflection correction mechanism further includes a deflection correction swing angle sensor sheet 9 and two groups of slot-type photoelectric sensors 10. The deflection correction swing angle sensor sheet 9 is fixedly connected to the bottom of the base plate 21, and the deflection correction swing angle sensor sheet 9 is arranged vertically downward. The two groups of slot-type photoelectric sensors 10 are installed on the base 1 in an arc-shaped interval, that is, the two groups of slot-type photoelectric sensors 10 are arranged along the swing path of the deflection correction swing angle sensor sheet 9. It should be noted that, under normal circumstances, the deflection correction swing angle sensor sheet 9 swings between the two groups of slot-type photoelectric sensors 10; and when the swing amplitude of the deflection correction swing angle sensor sheet 9 is too large, that is, when the deflection correction swing angle sensor sheet 9 passes through the slot-type photoelectric sensor 10, the slot-type photoelectric sensor 10 detects the deflection correction swing angle sensor sheet 9, thereby sending an alarm signal to remind the operator that the swing amplitude of the deflection correction roller assembly 2 is too large, that is, the offset of the battery pole piece is too large, so as to facilitate timely adjustment.

[0027] The working principle of the battery pole piece belt guiding process correction mechanism is as follows:

[0028] The battery pole piece is conveyed from one side of the deflection correction roller assembly 2, passes over the two roller shafts 23, and passes through the opening of the sensor bracket 41 below the other side. The deflection correction sensor is preset with a pole piece offset center value. When the deflection correction sensor 42 detects that the edge of the pole piece deviates from the set center value, the stepper motor 31 drives the ball screw pair 32 through the synchronous wheel assembly 8, and the ball screw pair 32 drives the toggle block 33 to move. The toggle block 33 drives the bottom plate 21 to rotate around the axis of the rotating shaft 6 through the connecting shaft 331 and the connecting bearing 332, thereby driving the two roller shafts 23 to swing, and the two roller shafts 23 drive the pole piece to swing until the edge of the pole piece is reset to the center value set by the deflection correction sensor 42, and the working cycle is completed; when the deflection correction sensor 42 detects that the edge of the pole piece deviates from the center value again, the stepper motor 31 works again to drive the deflection correction roller assembly 2 to correct the pole piece until the edge of the pole piece is reset to the center value set by the deflection correction sensor 42 again.

[0029] It should be understood that all the above embodiments are illustrative rather than restrictive, and any modifications, equivalent changes and modifications made by those skilled in the art to the specific embodiments described above under the conception of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A battery pole piece belt conveying process correction mechanism, comprising a base, characterized in that: The base is provided with a deviation correction roller assembly, a shifting mechanism and a deviation correction detection assembly; A bearing seat and a rotating shaft are provided below the deviation-correcting roller assembly, the bearing seat is vertically fixed on the base, one end of the rotating shaft is fixedly connected to the bottom of the deviation-correcting roller assembly, and the other end is coaxially connected to the bearing seat, and a waist-shaped slide groove is provided on the deviation-correcting roller assembly; The toggle mechanism includes a stepper motor, a ball screw pair and a toggle block. The stepper motor and the ball screw pair are horizontally arranged on the base and parallel to each other. The output shaft of the stepper motor is provided with a synchronous wheel assembly connected to the ball screw pair. The toggle block is fixed on the nut of the ball screw pair, and a connecting shaft is vertically fixed on the top of the toggle block. The connecting shaft passes through the waist-shaped slide groove upward and is rotatably connected with a connecting bearing. The connecting bearing is slidably connected to the waist-shaped slide groove. The toggle mechanism is used to drive the deviation correction roller assembly to rotate around the axis of the rotating shaft, thereby driving the battery pole piece to swing; The deflection correction detection assembly is located below one side of the deflection correction roller assembly, and is used to detect the deviation of the battery pole piece.

2. The battery pole piece belt-feeding process correction mechanism according to claim 1 is characterized by: The deviation-correcting roller assembly includes a base plate, two support plates and at least two roller shafts. The base plate is horizontally arranged, and the two support plates are respectively vertically fixed at the two ends of the base plate. The two roller shafts are arranged in parallel, and the two ends of the roller shafts are respectively rotatably connected to the two support plates; the waist-shaped slide groove is arranged on the base plate; one end of the rotating shaft is fixedly connected to the base plate.

3. The battery pole piece belt-feeding process correction mechanism according to claim 2 is characterized in that: The toggle mechanism also includes a pulling assembly, which includes a pull rod and a tension spring. The pull rod is vertically fixed on the top of the base plate and is located beside the waist-shaped slide groove. One end of the tension spring is connected to the connecting shaft, and the other end is connected to the pull rod.

4. The battery pole piece belt-feeding process correction mechanism according to claim 1 is characterized by: The synchronous wheel assembly includes a driving wheel, a driven wheel and a synchronous belt. The driving wheel is coaxially connected to the output shaft of the stepper motor, the driven wheel is coaxially connected to one end of the ball screw pair, and the driving wheel and the driven wheel are connected through the synchronous belt transmission.

5. The battery pole piece belt-feeding process correction mechanism according to claim 1 is characterized by: The deviation correction detection component comprises a sensor bracket and a deviation correction sensor. The sensor bracket is provided with an opening for the battery pole piece to pass through, and the deviation correction sensor is installed on the sensor bracket.

6. The battery pole piece belt-feeding process correction mechanism according to claim 5 is characterized by: The correction detection component also includes an adjustment bracket, which includes an adjustment seat, a sliding shaft, a slider, a compression spring, an adjustment block and a differential head. The adjustment seat is installed on the base, the sliding shaft is horizontally arranged, and one end of the sliding shaft is fixedly connected to the adjustment seat, and the other end is fixedly connected to the adjustment block. The slider is slidably connected to the sliding shaft, the compression spring is sleeved on the sliding shaft and abuts between the slider and the adjustment block, and the differential head is arranged on the adjustment block, which is used to push the slider to slide; the sensor bracket is fixedly connected to the slider.

7. The battery pole piece belt-feeding process correction mechanism according to claim 2 is characterized by: It also includes a deflection correction and swing angle sensing piece and two groups of slot-type photoelectric sensors. The deflection correction and swing angle sensing piece is vertically fixed on the bottom of the base plate. The two groups of slot-type photoelectric sensors are arranged on the base in an arc shape and are located below the deflection correction and swing angle sensing piece.

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