Swing arm type pole piece cutting device and pole piece production line

Abstract

The utility model discloses a swing arm type pole piece cutting device and a pole piece production line, the swing arm type pole piece cutting device comprises a rack, a swing arm telescoping mechanism, a swing mechanism and a cutter shaft mechanism, the cutter shaft mechanism comprises an air expansion cutter shaft and a rotation driving assembly used for driving the air expansion cutter shaft to rotate, an air expansion blade used for cutting off a material belt is arranged in the air expansion cutter shaft in a telescopic mode, the rotary driving assembly is installed on the swing mechanism, the swing mechanism is arranged on the machine frame in a sliding mode, and the swing arm telescopic mechanism is connected with the swing mechanism and used for driving the swing mechanism to slide. And the swinging mechanism is used for driving the cutter shaft mechanism to swing. The roll changing device has the advantages of being simple in structure, small in occupied space and high in roll changing precision and stability.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery production technical field especially a swing arm type pole piece cutting device and pole piece production line. BACKGROUND

[0002] With the continuous development of lithium battery production process, the production line demand for output is increasing, and the labor cost pressure is also increasingly prominent. In the process of lithium battery, time and labor optimization need to be carried out in the process of roll changing. At present, the double shaft roll changing mode is mainly used for winding and unwinding, the double shaft is set to seamlessly switch the working state and the standby state of winding and unwinding, so as to shorten the roll changing time. The double shaft roll changing usually adopts a turret structure: the double shaft is installed in the same vertical rotation plane, the positions of the two shafts are changed through plane rotation, and the switching between the working state and the standby state is completed.

[0003] However, the turret roll changing structure has a large demand for installation space, and has poor applicability when used on small devices.

[0004] Therefore, the utility model aims to provide a new technical scheme to solve the existing technical problems. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the prior art, the utility model provides a swing arm type pole piece cutting device and pole piece production line, which solves the problems of large space occupation and poor universality of the existing roll changing structure.

[0006] The utility model solves the technical problems by adopting the following technical scheme:

[0007] A swing arm type pole piece cutting device, comprising a rack, a swing arm telescopic mechanism, a swing mechanism and a knife shaft mechanism, the knife shaft mechanism comprising a gas expansion knife shaft and a rotary drive assembly for driving the gas expansion knife shaft to rotate, a gas expansion knife blade for cutting a material belt being telescopically arranged in the gas expansion knife shaft, the rotary drive assembly being mounted on the swing mechanism, the swing mechanism being slidingly arranged on the rack, the swing arm telescopic mechanism being connected with the swing mechanism to drive the swing mechanism to slide, and the swing mechanism being used to drive the knife shaft mechanism to swing.

[0008] In the above structure, the swing mechanism comprises a swing arm, a mounting plate and a swing arm drive assembly, the gas expansion knife shaft being rotatably connected to one end of the swing arm, the mounting plate being slidingly connected to the rack, the swing arm drive assembly comprising a transmission shaft and a swing arm motor, the swing arm motor being mounted on the mounting plate, the transmission shaft being connected with the output shaft of the swing arm motor, and one end of the transmission shaft away from the swing arm motor being connected with one end of the swing arm away from the gas expansion knife shaft.

[0009] In the above structure, the swing arm telescopic mechanism comprises a rodless cylinder and a linear guide rail, the rodless cylinder is fixedly installed on the rack, the linear guide rail is fixedly arranged on the top surface of the rack, the mounting plate is connected with the piston of the rodless cylinder, the mounting plate is fixedly connected with a sliding block on the side of the rack, and the sliding block is slidingly connected with the linear guide rail.

[0010] In the above structure, a gear encoder is arranged on the transmission shaft to detect the swing angle of the swing arm, the gear encoder comprises a first gear, a second gear and an encoder, the first gear is sleeved on the transmission shaft, the second gear is connected with the encoder, and the second gear is engaged with the first gear.

[0011] In the above structure, the rotary drive assembly comprises a rotary motor, a synchronous pulley and a synchronous belt, the swing arm is fixedly connected with a motor mounting seat, the rotary motor is connected with the motor mounting seat, the output shaft of the rotary motor is connected with a driving pulley, the synchronous pulley is installed on the driving end of the air inflation cutter shaft, and the synchronous belt is connected at both ends and sleeved on the outer periphery of the driving pulley and the synchronous pulley.

[0012] In the above structure, the air inflation cutter shaft further comprises a cutter shaft body and an air bag, the cutter shaft body is provided with a mounting groove, the air inflation cutter blade is slidingly arranged in the mounting groove, and the air bag is arranged at the bottom of the mounting groove and below the air inflation cutter blade.

[0013] Wherein, the air inflation cutter blade is driven to protrude out of the cutter shaft body when the air bag is inflated, and the air inflation cutter blade is driven to retract into the mounting groove when the air bag is deflated.

[0014] In the above structure, a reset switch is arranged on the swing arm, a reset sensing piece is arranged on the air inflation cutter shaft, and the reset switch is used to sense the reset sensing piece.

[0015] In the above structure, the rack is fixedly connected with limiting stoppers located at both ends of the linear guide rail, and the sliding block abuts against the limiting stoppers when sliding to the end of the linear guide rail.

[0016] The utility model further provides:

[0017] An electrode piece production line comprises the swing arm type electrode piece cutting device with the above structure.

[0018] The utility model discloses an advantageous effect is: the utility model discloses the cooperation setting of swing arm telescopic mechanism, swing mechanism and knife shaft mechanism, when needing to carry out the change of roll operation, swing arm telescopic mechanism drive knife shaft mechanism close to the material belt, swing mechanism drive knife shaft mechanism to the material belt is hauled, paste to the new roll, then through the air inflation blade on the knife shaft mechanism cuts the material belt and realizes the change of roll operation, and the overall structure is simple, and the space occupation is little, and the commonality is strong, and the device can realize the change of roll without moving the material roll, effectively improves the precision and stability of the change of roll. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model is further explained below in combination with the drawings and examples.

[0020] Figure 1 It is the whole structure schematic diagram of the utility model;

[0021] Figure 2 It is the knife shaft mechanism connecting structure schematic diagram of the utility model;

[0022] Figure 3 It is the knife shaft main part cross section structure schematic diagram of the utility model;

[0023] Figure 4 It is the swing mechanism connecting structure schematic diagram of the utility model;

[0024] Figure 5 It is the implementation process schematic diagram of the utility model.

[0025] Reference signs:

[0026] 1, rack;11, limit stop;

[0027] 2, knife shaft mechanism;21, air inflation knife shaft;211, knife shaft main body;2111, installation groove;212, air inflation blade;213, air bag;22, rotation drive assembly;221, rotation motor;2211, driving pulley;222, synchronous pulley;223, synchronous belt;

[0028] 3, swing arm telescopic mechanism;31, rodless cylinder;32, linear guide rail;

[0029] 4, swing mechanism;41, mounting plate;411, sliding block;412, bearing with seat;42, transmission shaft;43, swing arm motor;44, swing arm;441, reset switch;442, reset inductive sheet;

[0030] 5, gear encoder;51, first gear;52, second gear;53, encoder;

[0031] 6, material belt;7, work roll;8, spare material roll. DETAILED DESCRIPTION

[0032] The utility model is further explained below in combination with the drawings and examples.Figures 1-5 The utility model is further described.

[0033] The utility model discloses the conception, specific structure and the technical effect produced will be clearly and completely described below in conjunction with the embodiment and the drawing, to fully understand the purpose, features and effect of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment, and the other embodiment obtained by the person skilled in the art without paying the creative labor based on the embodiment of the utility model, all belong to the scope of the utility model protection. In addition, all the connection / connection relations involved in the patent do not mean that the components directly connect, but can be composed of better connection structure by adding or reducing the connection auxiliary part according to the specific implementation situation. The various technical features in the utility model creation can be interactively combined without mutual contradiction and conflict.

[0034] Reference Figures 1 to 5 The utility model provides a swing arm formula pole piece traction cutting device can be applied to lithium battery automatic change roll production line, including frame 1, swing arm telescopic mechanism 3, swing mechanism 4 and cutter shaft mechanism 2. Among them, frame 1 is the base body of whole device, to bear and install each component, frame 1 can be frame structure, gantry structure, table structure etc., here is not only limited, in this embodiment, frame 1 is gantry structure. Cutter shaft mechanism 2 includes gas expansion cutter shaft 21 and rotary drive assembly 22, wherein rotary drive assembly 22 is used to drive gas expansion cutter shaft 21 rotation to drag material belt 6, gas expansion blade 212 is telescopically arranged in gas expansion cutter shaft 21, and gas expansion blade 212 is used to cut material belt 6, gas expansion cutter shaft 21 is connected to gas source spare, and gas expansion cutter shaft 21 is inflated and deflated through gas source spare, and gas expansion blade 212 is extended outside gas expansion cutter shaft 21 to cut material belt 6 when gas expansion cutter shaft 21 is ventilated, and gas expansion blade 212 is retracted in gas expansion cutter shaft 21 when gas expansion cutter shaft 21 is deflated, so that gas expansion cutter shaft 21 performs traction action to material belt 6, gas expansion cutter shaft 21 is set to make the device drag material belt 6 by the mode of material belt 6, and then cut material belt 6 through gas expansion blade 212, realize change roll operation. Cutter shaft mechanism 2 is installed on swing mechanism 4, and swing mechanism 4 is used to drive cutter shaft mechanism 2 to swing, and swing mechanism 4 is slidably arranged on frame 1, swing arm telescopic mechanism 3 is arranged on frame 1 and is connected with swing mechanism 4, and is used to drive cutter shaft mechanism 2 to move forward and backward relative to frame 1, and then realize that cutter shaft mechanism 2 is close to or away from material belt 6 walk line, swing arm telescopic mechanism 3 drives cutter shaft mechanism 2 to move, to realize the adjustment of the relative position between cutter shaft mechanism 2 and material belt 6, when cutter shaft mechanism 2 is adjusted to the appropriate position, swing mechanism 4 drives cutter shaft mechanism 2 to swing, and cutter shaft mechanism 2 drives material belt 6 to swing, and material belt 6 is dragged from work roll 7 to spare material roll 8, and then realizes change roll operation.

[0035] The swing mechanism 4 includes a swing arm 44, a mounting plate 41, and a swing arm drive assembly. The pneumatic blade shaft 21 is rotatably connected to one end of the swing arm 44. The end of the swing arm 44 away from the pneumatic blade shaft 21 is connected to the swing arm drive assembly. In use, the swing arm drive assembly drives the swing arm 44 to swing, thereby causing the blade shaft mechanism 2 to swing. The mounting plate 41 is slidably connected to the frame 1. The swing arm drive assembly is mounted on the mounting plate 41. Specifically, the swing arm drive assembly includes a transmission shaft 42 and a swing arm motor 43. The swing arm motor 43 is mounted on the mounting plate 41. The input end of the transmission shaft 42 is connected to the output shaft of the swing arm motor 43. The end of the transmission shaft 42 away from the swing arm motor 43 is fixedly connected to the end of the swing arm 44 away from the pneumatic blade shaft 21. In this embodiment, a reducer is connected to the output shaft of the swing arm motor 43. The reducer is connected to the transmission shaft 42 via a coupling. The reducer allows for precise measurement and control of the output of the swing arm motor 43, thereby controlling the rotation angle of the transmission shaft 42 and achieving control of the swing angle of the swing arm 44. In the specific setup, a drive mounting base is fixedly connected to the mounting plate 41, the reducer is fixedly installed on the drive mounting base, and a seated bearing 412 is also fixedly connected to the mounting plate 41. The drive shaft 42 is rotatably connected to the mounting plate 41 through the seated bearing 412. The seated bearing 412 provides rotational support for the drive shaft 42 and ensures the installation reliability of the drive shaft 42.

[0036] Furthermore, a gear encoder 5 is installed on the drive shaft 42. The gear encoder 5 is used to detect the swing angle of the swing arm 44. The gear encoder 5 includes a first gear 51, a second gear 52, and an encoder 53. The encoder 53 is mounted on a bearing 412. The first gear 51 is sleeved on the drive shaft 42. The second gear 52 is connected to the encoder 53 and meshes with the first gear 51. The encoder 53 converts the magnetic field change signal caused by the change in the number of teeth between the first gear 51 and the second gear 52 into an electrical signal, and then feeds the electrical signal back to the control system. The control system then outputs a command to control the swing arm motor 43 to adjust the rotation angle. The specific structure and working principle of the gear encoder 5 can be found in existing technology and will not be described in detail here.

[0037] Reference Figure 1 and Figure 2The swing arm telescopic mechanism 3 is mounted on the frame 1 to realize the forward and backward movement of the cutter shaft mechanism 2. Specifically, the swing arm telescopic mechanism 3 includes a rodless cylinder 31 and a linear guide rail 32. The rodless cylinder 31 is fixedly mounted on the frame 1, and the linear guide rail 32 is fixedly mounted on the top surface of the frame 1. The mounting plate 41 is fixedly connected to the piston of the rodless cylinder 31, and a slider 411 is fixedly connected to the side of the mounting plate 41 facing the frame 1. The slider 411 is slidably connected to the linear guide rail 32. When the piston rod of the rodless cylinder 31 moves, it drives the mounting plate 41 to move. At this time, the slider 411 slides on the linear guide rail 32, so that the mounting plate 41 slides stably on the frame 1. The linear guide rail 32 supports and guides the movement of the swing arm telescopic mechanism 3.

[0038] Furthermore, limit blocks 11 are fixedly installed on the frame 1. The limit blocks 11 are located at both ends of the linear guide rail 32. The limit blocks 11 at both ends of the linear guide rail 32 limit the sliding stroke of the slider 411. When the slider 411 slides to the end of the linear guide rail 32, it can abut against the limit blocks 11 to prevent the mounting plate 41 from detaching from the frame 1 during sliding. The limit blocks 11 can be made of a material with a certain degree of elasticity, such as polyurethane. When the slider 411 abuts against the limit blocks 11, it can play a buffering role.

[0039] Reference Figure 1 and Figure 4 The rotary drive assembly 22 is used to drive the cutter shaft mechanism 2 to rotate. Specifically, the rotary drive assembly 22 includes a rotary motor 221, a synchronous pulley 222, and a synchronous belt 223. A motor mounting base is fixedly connected to the swing arm 44, and the rotary motor 221 is fixedly connected to the motor mounting base. In this embodiment, a reducer is connected to the output shaft of the rotary motor 221. The reducer can accurately measure and control the output of the rotary motor 221, thereby controlling the rotation angle of the air-expanded cutter shaft 21 and accurately cutting the air-expanded blade 212 onto the material strip 6. The output end of the reducer is connected to the drive pulley 2211, and the synchronous pulley 222 is installed on the drive end of the air-expanded cutter shaft 21. The synchronous belt 223 is connected end to end and sleeved on the outer circumference of the drive pulley 2211 and the synchronous pulley 222 to realize the transmission connection between the drive pulley 2211 and the synchronous pulley 222. During operation, the rotary motor 221 drives the drive pulley 2211 to rotate. Under the drive of the synchronous belt 223, the synchronous pulley 222 rotates synchronously, which in turn drives the air expansion knife shaft 21 to rotate. The rotation of the air expansion knife shaft 21 facilitates the traction of the material belt 6, which is beneficial for the roll changing operation.

[0040] Reference Figure 2 and Figure 3The air-expanding blade 21 is telescopically mounted inside the air-expanding blade shaft 21. Specifically, the air-expanding blade shaft 21 also includes a blade shaft body 211 and an air bladder 213. The blade shaft body 211 is provided with a mounting groove 2111, and the air-expanding blade 212 is disposed in the mounting groove 2111. An air bladder 213 is located at the bottom of the mounting groove 2111 and below the air-expanding blade 212. The blade shaft body 211 has an inflation / deflation channel, and the air nozzle of the air bladder 213 is connected to the inflation / deflation channel, connecting the air-expanding blade shaft 21 to the air source component. The air source component inflates / deflates the air bladder 213 through the inflation / deflation channel. When the air bladder 213 is inflated, its outer wall expands radially outward, pushing the air-expanding blade 212 outward along the blade shaft body 211, so that the cutting edge of the air-expanding blade 212 protrudes outside the blade shaft body 211. When the air bladder 213 deflates, it causes the air-expanding blade 212 to retract back into the mounting groove 2111. The control principle of the extension and retraction of the air-expanding blade 212 on the air-expanding blade shaft 21 can be referred to as the extension and retraction principle of the air shaft.

[0041] Furthermore, a reset switch 441 is provided on the swing arm 44, and a reset sensor 442 is provided on the air blade shaft 21. The reset switch 441 is used to sense the reset sensor 442. The reset switch 441 is connected to the control system electrical signal. The rotary motor 221 drives the air blade shaft 21 to rotate. When the reset switch 441 senses the reset sensor 442, it indicates that the air blade 212 has been reset.

[0042] The implementation process of this utility model is as follows:

[0043] Reference Figures 1 to 5 Preparation stage: The rodless cylinder 31 drives the cutter shaft mechanism 2 to retract to the side away from the material belt 6. Then, the swing arm motor 43 drives the swing arm 44 to swing according to the signal fed back by the gear encoder 5, so that the swing arm 44 swings to the initial position (in this method, the initial position of the swing arm 44 is that the swing arm 44 is in a vertical state). The rotary motor 221 drives the air-expanded cutter shaft 21 to reset according to the signal fed back by the reset switch 441, so that the air-expanded blade 212 is in the initial position (in this embodiment, the initial position of the air-expanded blade 212 is that the blade of the air-expanded blade 212 is vertically upward).

[0044] Traction and rewinding stage: Based on the feeding of the material belt 6, control the swing arm motor 43 to work, driving the swing arm 44 to swing clockwise by a certain angle. Then, the rodless cylinder 31 drives the cutter shaft mechanism 2 to extend. At this time, the air-expanded cutter shaft 21 is located between the material belt 6 and the working roll 7. Next, control the swing arm motor 43 to work, driving the swing arm 44 to swing counterclockwise by a certain angle. At this time, the roll moves together with the air-expanded cutter shaft 21 under the traction of the air-expanded cutter shaft 21. The air-expanded cutter shaft 21 swings until the roller surface is in contact with the preparation roll 8. Double-sided tape is pasted on the roller surface of 8. The material strip 6 is pasted onto the preparation roll 8 under the traction of the air expansion blade shaft 21. At this time, the control rotary motor 221 is working, driving the air expansion blade shaft 21 to rotate until the air expansion blade 212 is aligned with the cutting point of the material strip 6 (the rotation angle is set according to the actual material strip 6 running). The air source is activated to inflate the air expansion blade shaft 21, so that the air expansion blade 212 extends to cut the material strip 6. At this time, the preparation roll 8 is driven to rotate to realize the roll changing and rewinding. Then, each mechanism returns to the initial position to complete the change operation.

[0045] Based on the above-mentioned swing-arm type electrode cutting device, this utility model also provides:

[0046] An electrode production line includes a swing-arm type electrode cutting device with the structure described above.

[0047] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A swing-arm type electrode cutting device, characterized in that: The system includes a frame, a swing arm telescopic mechanism, a swing mechanism, and a cutter shaft mechanism. The cutter shaft mechanism includes an air-expanded cutter shaft and a rotary drive assembly for driving the air-expanded cutter shaft to rotate. An air-expanded blade for cutting material strips is telescopically installed inside the air-expanded cutter shaft. The rotary drive assembly is mounted on the swing mechanism, which is slidably mounted on the frame. The swing arm telescopic mechanism is connected to the swing mechanism and is used to drive the swing mechanism to slide. The swing mechanism is used to drive the cutter shaft mechanism to swing.

2. The swing-arm type electrode cutting device according to claim 1, characterized in that: The swing mechanism includes a swing arm, a mounting plate, and a swing arm drive assembly. The air-expanding blade shaft is rotatably connected to one end of the swing arm. The mounting plate is slidably connected to the frame. The swing arm drive assembly includes a transmission shaft and a swing arm motor. The swing arm motor is mounted on the mounting plate. The transmission shaft is connected to the output shaft of the swing arm motor. The end of the transmission shaft away from the swing arm motor is connected to the end of the swing arm away from the air-expanding blade shaft.

3. The swing-arm type electrode cutting device according to claim 2, characterized in that: The telescopic arm mechanism includes a rodless cylinder and a linear guide rail. The rodless cylinder is fixedly installed on the frame, and the linear guide rail is fixedly installed on the top surface of the frame. The mounting plate is connected to the piston of the rodless cylinder, and a slider is fixedly connected to the side of the mounting plate facing the frame. The slider is slidably connected to the linear guide rail.

4. The swing-arm type electrode cutting device according to claim 2, characterized in that: The drive shaft is equipped with a gear encoder for detecting the swing angle of the swing arm. The gear encoder includes a first gear, a second gear and an encoder. The first gear is sleeved on the drive shaft, the second gear is connected to the encoder and meshes with the first gear.

5. The swing-arm type electrode cutting device according to claim 2, characterized in that: The rotary drive assembly includes a rotary motor, a synchronous pulley, and a synchronous belt. A motor mounting base is fixedly connected to the swing arm. The rotary motor is connected to the motor mounting base. The output shaft of the rotary motor is connected to a drive pulley. The synchronous pulley is installed on the drive end of the air-expanding blade shaft. The synchronous belt is connected end to end and sleeved on the outer periphery of the drive pulley and the synchronous pulley.

6. The swing-arm type electrode cutting device according to claim 1, characterized in that: The air-expanding cutter shaft also includes a cutter shaft body and an air bladder. The cutter shaft body has an installation groove, the air-expanding blade is slidably disposed in the installation groove, and the air bladder is disposed at the bottom of the installation groove and located below the air-expanding blade. In this configuration, inflating the airbag can drive the air-expanding blade to protrude from the cutter shaft body, and deflating the airbag can cause the air-expanding blade to retract into the mounting groove.

7. The swing-arm type electrode cutting device according to claim 2, characterized in that: A reset switch is provided on the swing arm, and a reset sensor is provided on the air expansion blade shaft. The reset switch is used to sense the reset sensor.

8. The swing-arm type electrode cutting device according to claim 3, characterized in that: The frame is fixedly connected with limiting blocks located at both ends of the linear guide rail. When the slider slides to the end of the linear guide rail, it abuts against the limiting blocks.

9. An electrode production line, characterized in that: Includes the swing arm type electrode cutting device as described in any one of claims 1-8.

Images