Shaftless turret pay-off mechanism and lithium battery manufacturing equipment

Abstract

The application discloses a shaftless turret winding and unwinding mechanism and a lithium battery manufacturing device. The shaftless turret winding and unwinding mechanism comprises a turret device, a horizontal moving device and a cutter swing arm device. The turret device comprises a base, a first winding and unwinding assembly, a second winding and unwinding assembly, a first rotating driving unit and a second rotating driving unit. The horizontal moving device comprises a fixed frame above the turret device, two mounting plates arranged oppositely in front and back and a moving driving assembly. The cutter swing arm device is above the turret device and comprises a first cutter swing arm assembly, a second cutter swing arm assembly, a first cutter swing arm driving assembly and a second cutter swing arm driving assembly. The application can avoid damaging the pole piece during the winding change process and improve the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of lithium battery manufacturing equipment, specifically to a shaftless turret winding and unwinding mechanism and lithium battery manufacturing equipment. Background Technology

[0002] Existing turret-type unwinding mechanisms in lithium battery manufacturing equipment such as coating machines generally include a turret assembly. This turret assembly typically comprises a turret, a first unwinding component, and a second unwinding component. The first and second unwinding components are symmetrically arranged on opposite sides of the turret. They are used to mount electrode rolls and unwind the electrodes from these rolls. During unwinding, for example, when the electrode roll in the first unwinding component is exhausted, a spare electrode roll on the second unwinding component needs to be activated. This requires a roll-changing operation. Currently, this operation usually involves rotating the turret 180 degrees to swap the positions of the first and second unwinding components, allowing the electrode roll on the first unwinding component to be swapped with the spare electrode roll on the second unwinding component. This roll-changing process causes significant movement of the unwound electrode, which can easily damage the electrode and reduce production efficiency. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a shaftless turret winding and unwinding mechanism and lithium battery manufacturing equipment, which can avoid damage to the electrode sheets during the winding process and improve production efficiency.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A first aspect of the present invention provides a shaftless turret take-up and unwind mechanism, including a turret assembly, a horizontal moving device, and a cutter swing arm device; the turret assembly includes a base, a first take-up and unwind assembly, a second take-up and unwind assembly, a first rotation drive unit, and a second rotation drive unit, the first take-up and unwind assembly and the second take-up and unwind assembly are respectively disposed at the top of the base and are arranged symmetrically from left to right, the first rotation drive unit is used to drive the first take-up and unwind assembly to rotate relative to the base, and the second rotation drive unit is used to drive the second take-up and unwind assembly to rotate relative to the base; the horizontal moving device includes a fixed frame located above the turret assembly, two mounting plates arranged front to back opposite each other, and a moving drive assembly. The device comprises two mounting plates slidably connected to the fixed frame, and a moving drive assembly for driving the two mounting plates to move left and right relative to the fixed frame. The cutter swing arm device is located above the turret device and includes a first cutter swing arm assembly, a second cutter swing arm assembly, a first cutter swing arm drive assembly, and a second cutter swing arm drive assembly. Both the first and second cutter swing arm assemblies are disposed between the two mounting plates and are symmetrically arranged left and right. The first and second cutter swing arm drive assemblies are respectively disposed on opposite sides of the two mounting plates and are used to drive the first and second cutter swing arm assemblies to rotate relative to the two mounting plates.

[0006] As a preferred technical solution, both the first and second take-up / unwinding assemblies include a rotating shaft rotatably disposed at the top of the base, two connecting arms arranged in a front-to-back orientation, two clamps arranged in a front-to-back orientation, and a clamp driving unit. The first rotation driving unit is used to drive the rotating shaft of the first take-up / unwinding assembly to rotate relative to the base, and the second rotation driving unit is used to drive the rotating shaft of the second take-up / unwinding assembly to rotate relative to the base. The bottom ends of the two connecting arms are respectively connected to the rotating shaft, and the two clamps are respectively provided on the adjacent sides of the top ends of the two connecting arms. The clamp driving unit is used to drive one of the clamps to rotate relative to the corresponding connecting arm.

[0007] As a preferred technical solution, the two connecting arms can move towards or away from each other along the rotating shaft, and both the first winding and unwinding assembly and the second winding and unwinding assembly include two moving drive units for driving the two connecting arms to move towards or away from each other.

[0008] As a preferred technical solution, the mobile drive assembly includes a mobile drive module disposed at the top of the fixed frame and two synchronous belt units. The two synchronous belt units are respectively disposed at the front and rear sides of the top of the fixed frame. Each synchronous belt unit includes a driving wheel, a driven wheel, and a synchronous belt sleeved on the outer periphery of the driving wheel and the driven wheel. The driving wheels of the two synchronous belt units are respectively connected to the mobile drive module through two couplings. The two mounting plates are located inside the fixed frame, and the top and bottom ends of the two mounting plates are respectively located above and below the fixed frame. The two mounting plates are respectively close to the front inner wall and the rear inner wall of the fixed frame. Each mounting plate corresponds to one synchronous belt unit, and each mounting plate is located between the driving wheel and the driven wheel of the corresponding synchronous belt unit and connected to the synchronous belt of the corresponding synchronous belt unit.

[0009] As a preferred technical solution, both the first and second cutter swing arm assemblies include two rotating shafts, two cutter swing arms, a first moving roller, a pressure roller, and two pressure roller drive units; the first ends of the two rotating shafts are rotatably disposed on adjacent sides of the two mounting plates, the first ends of the two cutter swing arms are respectively connected to the second ends of the two rotating shafts, and the second ends of the two cutter swing arms extend away from the two mounting plates; both ends of the first moving roller are respectively connected to the second ends of the two rotating shafts, and the pressure roller is located between the two cutter swing arms. Both ends of the first cutter arm are connected to the first ends of the two pressure roller swing arms respectively. The second ends of the two pressure roller swing arms are respectively located on the adjacent side of the two cutter swing arms. The two pressure roller drive units are respectively used to drive the two pressure roller swing arms to rotate relative to the two cutter swing arms. The first cutter swing arm drive assembly is connected to the first end of one of the rotating shafts of the first cutter swing arm assembly and is used to drive the rotating shaft to rotate relative to the corresponding mounting plate. The second cutter swing arm drive assembly is connected to the first end of one of the rotating shafts of the second cutter swing arm assembly and is used to drive the rotating shaft to rotate relative to the corresponding mounting plate.

[0010] As a preferred technical solution, both the first cutter arm assembly and the second cutter arm assembly include a second moving roller, which is disposed between the second ends of the two cutter arms.

[0011] As a preferred technical solution, both the first and second cutter arm assemblies include a cutter module disposed between the pressure roller and the second moving roller. The cutter module includes two cutter fixing seats, a cutter fixing plate, a cutter, a cutter rotating shaft, and a cutter driving unit. The cutter rotating shaft and the cutter driving unit are respectively disposed on the adjacent sides of the two cutter arms. The cutter rotating shaft can rotate relative to the corresponding cutter arm. The first ends of the two cutter fixing seats are respectively disposed at both ends of the cutter fixing plate. The second end of one cutter fixing seat is connected to the cutter rotating shaft, and the second end of the other cutter fixing seat is connected to the cutter driving unit and rotated by the cutter driving unit. The cutter fixing plate is located between the pressure roller and the two cutter fixing seats. The cutter is disposed on the side of the cutter fixing plate away from the pressure roller, and the cutter portion protrudes from the bottom end of the cutter fixing plate.

[0012] As a preferred technical solution, a cutter protective cover is provided between the cutter fixing plate and the pressure roller, and the two ends of the cutter protective cover are respectively located on the adjacent sides of the two cutter swing arms.

[0013] As a preferred technical solution, a dust collection box is provided above the cutter module, with the two ends of the dust collection box respectively located on the adjacent side of the two cutter swing arms. A vacuum connector is provided at the top of the dust collection box, and a suction hole corresponding to the cutter module is provided at the bottom of the dust collection box.

[0014] As a preferred technical solution, both cutter arms are V-shaped cutter arms, and the two ends of the pressure roller correspond to the corners of the two cutter arms respectively; two sensor mounting seats are provided at the corners of the two cutter arms respectively, and the bottom ends of the two sensor mounting seats protrude from the bottom ends of the two cutter arms respectively and are provided with two fiber optic sensors respectively, and the two fiber optic sensors are arranged in a front-to-back facing arrangement.

[0015] A second aspect of the present invention also provides a lithium battery manufacturing apparatus, including the shaftless turret winding and unwinding mechanism described in the above technical solution.

[0016] The beneficial effects of the present invention are: the present invention has a simple structure, occupies little space, and is easy to install and debug. When changing rolls, it is not necessary to swap the positions of the first take-up and unwinding assembly and the second take-up and unwinding assembly. The unwound electrode sheet will not move significantly, which can avoid damage to the electrode sheet, improve production efficiency, and greatly meet the needs of use. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of a shaftless turret winding and unwinding mechanism according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 The diagram shows a front view of the shaftless turret winding and unwinding mechanism.

[0020] Figure 3 yes Figure 1 A schematic diagram of the turret device of the shaftless turret winding and unwinding mechanism shown.

[0021] Figure 4 yes Figure 3 A schematic diagram of the structure of the first rotating shaft, two first connecting arms, and two first clamps of the turret device shown.

[0022] Figure 5 yes Figure 1 A schematic diagram of the turret device of the shaftless turret winding and unwinding mechanism shown.

[0023] Figure 6 yes Figure 5 A schematic diagram of the second rotating shaft, two second connecting arms, and two second clamps of the turret device shown.

[0024] Figure 7 yes Figure 1 The diagram shows the structure of the horizontal moving device, the first fixed roller, the second fixed roller, and the third fixed roller of the shaftless turret winding and unwinding mechanism.

[0025] Figure 8 yes Figure 1 A schematic diagram of the cutter swing arm device of the shaftless turret winding and unwinding mechanism shown.

[0026] Figure 9 yes Figure 8 A schematic diagram of the second cutter arm assembly of the cutter arm device shown, after removing the second moving roller and the dust collection box;

[0027] Figure 10 yes Figure 8 A cross-sectional schematic diagram of the second cutter arm assembly of the cutter arm device shown;

[0028] Figure 11 yes Figure 1 The first and second winding assemblies of the shaftless turret winding mechanism shown are respectively equipped with electrode rolls.

[0029] Figure 12 yes Figure 1 A cross-sectional view of the electrode roll on the first winding assembly of the shaftless turret winding mechanism when it reaches the transposition position. Detailed Implementation

[0030] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0031] Please refer to Figure 1 and Figure 2 An embodiment of the present invention provides a shaftless turret winding and unwinding mechanism, including a turret device 10, a horizontal moving device 30, a cutter swing arm device 50, a first fixed roller 70, a second fixed roller 80 and a third fixed roller 90.

[0032] Combination Figures 3 to 6 As shown, the turret device 10 includes a base, a first take-up / unwind assembly, a second take-up / unwind assembly, a first rotation drive unit 16, and a second rotation drive unit 17. The first and second take-up / unwind assemblies are respectively disposed at the top of the base and are arranged symmetrically from left to right. The first take-up / unwind assembly shown in the accompanying drawings of this embodiment is located at the roll-changing position. The first and second take-up / unwind assemblies are respectively used to install electrode rolls and to unwind the electrodes from the electrode rolls, or to install empty rolls and to wind the electrodes onto the empty rolls. The first and second take-up / unwind assemblies can rotate relative to the base. The first rotation drive unit 16 is used to drive the first take-up / unwind assembly to rotate relative to the base, and the second rotation drive unit 17 is used to drive the second take-up / unwind assembly to rotate relative to the base.

[0033] Specifically, the base includes two base plates 112 arranged front to back and two mounting brackets 113 arranged front to back. The two mounting brackets 113 are respectively positioned at the top of the two base plates 112. A fixing beam is provided between the two mounting brackets 113. The number of fixing beams can be set according to actual needs. The fixing beams provide support for the two mounting brackets 113.

[0034] The first and second take-up / unwinding assemblies have the same structure, both including a rotating shaft, two connecting arms, two clamps, and a clamp drive unit. For ease of description, the rotating shaft, connecting arms, clamps, and clamp drive unit of the first take-up / unwinding assembly are respectively named first rotating shaft 114, first connecting arm 12, first clamp 14, and first clamp drive unit 18, and the rotating shaft, connecting arms, clamps, and clamp drive unit of the second take-up / unwinding assembly are respectively named second rotating shaft 115, second connecting arm 13, second clamp 15, and second clamp drive unit 19.

[0035] The first winding and unwinding assembly includes a first rotating shaft 114, two first connecting arms 12 arranged in a front-to-back orientation, two first clamps 14 arranged in a front-to-back orientation, a first clamp drive unit 18, and two first moving drive units 132a and 132b.

[0036] The two ends of the first rotating shaft 114 are respectively mounted on the top of the two mounting brackets 113 via two bearing seats 116. One end of the first rotating shaft 114 is connected to a U-shaped first rotating shaft swing arm 1142. Specifically, one end of the first rotating shaft swing arm 1142 is sleeved on one end of the first rotating shaft 114, and the open end of the first rotating shaft swing arm 1142 extends away from the first rotating shaft 114. The first rotation drive unit 16 is preferably a hydraulic cylinder. The cylinder body is disposed inside the open end of the first rotating shaft swing arm 1142, and the end of the piston rod of the hydraulic cylinder is disposed on the top of the base plate 112 corresponding to the first rotating shaft swing arm 1142 via a fixing block 164. The hydraulic cylinder is inclined relative to the base plate 112. By extending and retracting the piston rod of the hydraulic cylinder relative to the base plate 112 in the inclined direction, the first rotating shaft swing arm 1142 can be driven to rotate relative to the base. The rotation of the first rotating shaft swing arm 1142 can drive the first rotating shaft 114 to rotate relative to the base.

[0037] The bottom ends of the two first connecting arms 12 are respectively connected to the first rotating shaft 114. Two first chucks 14 are respectively provided on the adjacent sides of the top ends of the two first connecting arms 12. Rotation of the first rotating shaft 114 causes the two first connecting arms 12 to rotate relative to the base around the axis of the first rotating shaft 114, and the two first chucks 14 can rotate together with the two first connecting arms 12. The two first chucks 14 are rotatable and are used to mount electrode rolls. In practical applications, the first ends of the two first chucks 14 (i.e., the adjacent ends of the two first chucks 14) are respectively inserted into both ends of the electrode roll, thereby achieving the mounting of the electrode roll through the two first chucks 14. In this embodiment, two mounting holes are respectively provided on the adjacent sides of the top ends of the two first connecting arms 12. The second ends of the two first chucks 14 are rotatably mounted in the two mounting holes through two bearings, thereby allowing the two first chucks 14 to rotate relative to the two first connecting arms 12. The first chuck drive unit 18 is preferably a geared motor. The geared motor is mounted on one of the first connecting arms 12 and connected to the second end of one of the first chucks 14. It is used to drive the first chuck 14 to rotate. After the electrode roll is installed on the two first chucks 14, the geared motor can drive the two first chucks 14 and the electrode roll to rotate, thereby realizing the unwinding of the electrode roll.

[0038] In this embodiment, the bottom ends of the two first connecting arms 12 are slidably connected to the first rotating shaft 114. The two first connecting arms 12 can move towards or away from each other along the first rotating shaft 114. Specifically, the bottom ends of the two first connecting arms 12 are approximately U-shaped and sleeved on the outer periphery of the first rotating shaft 114. Two sliders 1146 are respectively provided on the inner walls of both sides of the bottom end of the first connecting arms 12, and two slide rails 1144 are respectively provided on the outer walls of both sides of the first rotating shaft 114, which slide in cooperation with the two sliders 1146. Through the sliding cooperation of the sliders 1146 and the slide rails 1144, the two first connecting arms 12 can move towards or away from each other along the first rotating shaft 114.

[0039] Two first moving drive units 132a and 132b are used to drive two first connecting arms 12 to move towards or away from each other along the first rotating shaft 114. The movement of the two first connecting arms 12 towards or away from each other can drive the two first chucks 14 to move towards or away from each other. The two first moving drive units 132a and 132b are located below the first rotating shaft 114 and are distributed left and right. Specifically, the two first moving drive units 132a and 132b are preferably hydraulic cylinders. The hydraulic cylinder located on the left has its cylinder body mounted on the first rotating shaft 114 via a first connecting block 133a (the first connecting block 133a corresponds to the first connecting arm 12 located at the rear), and the end of the piston rod of the hydraulic cylinder is mounted at the bottom end of the first connecting arm 12 located at the front via a second connecting block 134a. The hydraulic cylinder located on the right has its body mounted on the first rotating shaft 114 via a first connecting block 133b (which corresponds to the first connecting arm 12 located at the front). The end of the piston rod of this cylinder is mounted on the bottom end of the first connecting arm 12 located at the rear via a second connecting block 134b. The piston rods of the two hydraulic cylinders extend and retract along the axial direction of the first rotating shaft 114, thereby driving the two first connecting arms 12 to move towards or away from each other. In practical applications, the rotation of the first rotating shaft 114 can drive the two sliders 1146, the two slide rails 1144, and the two first moving drive units 132a and 132b to rotate together. When installing electrode rolls or empty rolls, the two first moving drive units 132a and 132b drive the two first connecting arms 12 to move backward along the first rotating shaft 114, thereby driving the two first chucks 14 to move backward, so that the distance between the two first chucks 14 is greater than the length of the electrode roll. Then, one end of the electrode roll is inserted into the first end of the first chuck 14 located in front. Then, the two first moving drive units 132a and 132b drive the two first connecting arms 12 to move towards the initial position, thereby driving the two first chucks 14 to move towards the initial position. During the process of the two first chucks 14 moving towards each other, the first end of the first chuck 14 located at the rear can be inserted into the other end of the electrode roll. In this way, the electrode roll is installed into the two first chucks 14, which is convenient for installation.

[0040] The second winding and unwinding assembly includes a second rotating shaft 115, two second connecting arms 13 arranged in a front-to-back orientation, two second clamps 15 arranged in a front-to-back orientation, a second clamp drive unit 19, and two second movement drive units 122a and 122b.

[0041] The two ends of the second rotating shaft 115 are respectively mounted on the top of the two mounting brackets 113 via two bearing seats 117. One end of the second rotating shaft 115 is connected to a U-shaped second rotating shaft swing arm 1152. Specifically, one end of the second rotating shaft swing arm 1152 is sleeved on one end of the second rotating shaft 115, and the open end of the second rotating shaft swing arm 1152 extends away from the second rotating shaft 115. The second rotation drive unit 17 is preferably a hydraulic cylinder. The cylinder body is disposed inside the open end of the second rotating shaft swing arm 1152, and the end of the piston rod of the hydraulic cylinder is disposed on the top of the base plate 112 corresponding to the second rotating shaft swing arm 1152 via a fixing block 174. The hydraulic cylinder is inclined relative to the base plate 112. By extending and retracting the piston rod of the hydraulic cylinder relative to the base plate 112 in the inclined direction, the second rotating shaft swing arm 1152 can be driven to rotate relative to the base. The rotation of the second rotating shaft swing arm 1152 can drive the second rotating shaft 115 to rotate relative to the base.

[0042] The bottom ends of the two second connecting arms 13 are respectively connected to the second rotating shaft 115. Each second connecting arm 13 corresponds to a first connecting arm 12, and the angle between the second connecting arm 13 and the corresponding first connecting arm 12 is an obtuse angle. Two second clamps 15 are respectively provided on the adjacent sides of the top ends of the two second connecting arms 13. The rotation of the second rotating shaft 115 can drive the two second connecting arms 13 to rotate relative to the base around the axis of the second rotating shaft 115, and the two second clamps 15 can rotate together with the two second connecting arms 13. The two second clamps 15 can rotate relative to the two first connecting arms 13, and are used to install the electrode roll. In practical applications, the first ends of the two second clamps 15 (i.e., the adjacent ends of the two second clamps 15) are respectively inserted into both ends of the electrode roll, thereby achieving the installation of the electrode roll through the two second clamps 15. In this embodiment, two mounting holes are respectively provided on the adjacent sides of the top ends of the two second connecting arms 13. The second ends of the two second chucks 15 are rotatably disposed in the two mounting holes through two bearings, so that the two second chucks 15 can rotate relative to the two second connecting arms 13. The second chuck driving unit 19 is preferably a geared motor. The geared motor is disposed on one of the second connecting arms 13 and connected to the second end of one of the second chucks 15, and is used to drive the second chuck 15 to rotate relative to the corresponding second connecting arm 13. After the electrode roll is installed on the two second chucks 15, the geared motor can drive the two second chucks 15 and the electrode roll to rotate, thereby realizing the unwinding of the electrode roll.

[0043] In this embodiment, the bottom ends of the two second connecting arms 13 are slidably connected to the second rotating shaft 115. The two second connecting arms 13 can move towards or away from each other along the second rotating shaft 115. Specifically, the bottom ends of the two second connecting arms 13 are approximately U-shaped and sleeved on the outer periphery of the second rotating shaft 115. Two sliders 1156 are respectively provided on the inner walls of both sides of the bottom ends of the second connecting arms 13, and two slide rails 1154 are respectively provided on the outer walls of both sides of the second rotating shaft 115 to slide in cooperation with the two sliders 1156. Through the sliding cooperation of the sliders 1156 and the slide rails 1154, the two second connecting arms 13 can move towards or away from each other along the second rotating shaft 115.

[0044] Two second motion drive units 122a and 122b are used to drive two second connecting arms 13 to move towards or away from each other along the second rotating shaft 115. The movement of the two second connecting arms 13 towards or away from each other can drive the two second clamps 15 to move towards or away from each other. The two second motion drive units 122a and 122b are located below the second rotating shaft 115 and are distributed left and right. Specifically, the two second motion drive units 122a and 122b are preferably hydraulic cylinders. The hydraulic cylinder located on the left has its cylinder body mounted on the second rotating shaft 115 via a first connecting block 123a (the first connecting block 123a corresponds to the second connecting arm 13 located at the rear), and the end of the piston rod of the hydraulic cylinder is mounted at the bottom end of the second connecting arm 13 located at the front via a second connecting block 124a. The hydraulic cylinder located on the right has its body mounted on the second rotating shaft 115 via a first connecting block 123b (which corresponds to the second connecting arm 13 located at the front). The end of the piston rod of this cylinder is mounted on the bottom end of the second connecting arm 13 located at the rear via a second connecting block 124b. The piston rods of the two hydraulic cylinders extend and retract along the axial direction of the second rotating shaft 115, thereby driving the two second connecting arms 13 to move towards or away from each other. In practical applications, the rotation of the second rotating shaft 115 can drive the two sliders 1156, the two slide rails 1154, and the two second motion drive units 122a and 122b to rotate together. When installing the electrode roll, the two second connecting arms 13 are first driven by the two second moving drive units 122a and 122b to move backward along the second rotating shaft 115, thereby driving the two second clamps 15 to move backward, so that the distance between the two second clamps 15 is greater than the length of the electrode roll. Then, one end of the electrode roll is inserted into the first end of the second clamp 15 located in front, for example. Then, the two second moving drive units 122a and 122b are driven by the two second connecting arms 13 to move towards the initial position, thereby driving the two second clamps 15 to move towards the initial position. During the process of the two second clamps 15 moving towards each other, the first end of the second clamp 15 located at the rear can be inserted into the other end of the electrode roll. In this way, the electrode roll is installed into the two second clamps 15, which is convenient for installation.

[0045] Combination Figure 7 As shown, the first fixed roller 70, the second fixed roller 80 and the third fixed roller 90 are located above the horizontal moving device 30. The two ends of the first fixed roller 70, the second fixed roller 80 and the third fixed roller 90 are respectively fixed to a place such as a machine base by bearing seats, and are used to support the electrode sheets unwound by the first take-up and unwinding assembly or the second take-up and unwinding assembly.

[0046] The horizontal moving device 30 includes a fixed frame 31 located above the turret device 10, a first guide roller 32, a second guide roller 34, a mounting plate 34a, a mounting plate 34b, and a moving drive assembly mounted on the fixed frame 31. The fixed frame 31 is used for mounting on, for example, a machine platform.

[0047] Mounting plates 34a and 34b are arranged opposite each other. Mounting plates 34a and 34b are located within the fixed frame 31, with the top and bottom ends of mounting plate 34a and 34b respectively positioned above and below the fixed frame 31. Mounting plates 34a and 34b are respectively close to the front and rear inner walls of the fixed frame 31. The top ends of mounting plates 34a and 34b are slidably connected to the fixed frame 31 via connecting plates 342a and 342b respectively.

[0048] The motion drive assembly includes a motion drive module located on the left side of the top of the fixed frame 31 and two synchronous belt units.

[0049] The mobile drive module includes a reducer 351 disposed on the left side of the top of the fixed frame 31 and a drive motor 352 disposed on the top of the reducer 351. The drive motor 352 is preferably a servo motor.

[0050] The two synchronous belt units are designated as a first synchronous belt unit and a second synchronous belt unit. The first synchronous belt unit is located on the front side of the top of the fixed frame 31, and the second synchronous belt unit is located on the rear side of the top of the fixed frame 31. The first synchronous belt unit includes a first driving pulley 3542, a first driven pulley 3543, and a first synchronous belt 3544 sleeved around the outer periphery of the first driving pulley 3542 and the first driven pulley 3543. The second synchronous belt unit includes a second driving pulley 3552, a second driven pulley 3553, and a second synchronous belt 3554 sleeved around the outer periphery of the second driving pulley 3552 and the second driven pulley 3553. The first driving pulley 3542 and the second driving pulley 3552 are respectively connected to the reducer 351 of the moving drive module via two couplings 353, which are respectively located on the left side of the top of the fixed frame 31 via bearing seats. The first driven pulley 3543 and the second driven pulley 3553 are respectively located on the front and rear sides of the top of the fixed frame 31 and are situated above the turret device 10. Mounting plate 34a corresponds to the first synchronous belt unit and is located between the first driving pulley 3542 and the first driven pulley 3543. Mounting plate 34b corresponds to the second synchronous belt unit and is located between the second driving pulley 3552 and the second driven pulley 3553. The first synchronous belt 3544 and the second synchronous belt 3554 are respectively connected to the top end of connecting plate 342a and the top end of connecting plate 342b. In practical applications, the drive motor 352 drives the first drive wheel 3542 and the second drive wheel 3552 to rotate via the reducer 351 and two couplings 353. This, in turn, drives the first synchronous belt 3544, the first driven wheel 3543, the second synchronous belt 3554, and the second driven wheel 3553 to rotate. The rotation of the first synchronous belt 3544 and the second synchronous belt 3554 causes the connecting plates 342a and 342b to move left and right relative to the fixed frame 31. This, in turn, causes the mounting plates 34a and 34b, the first guide roller 32, and the second guide roller 33 to move together. The movement of the mounting plates 34a and 34b causes the cutter swing arm device 50 to move together.

[0051] The top ends of mounting plates 34a and 34b are slidably connected to the fixed frame 31 via connecting plates 342a and 342b, respectively. Specifically, the top end of mounting plate 34a is provided with connecting plate 342a, and the top end of mounting plate 34b is provided with connecting plate 342b. The front and rear sides of the top end of the fixed frame 31 are respectively provided with two guide rails 311a and 311b extending along the length direction of the fixed frame 31. The two guide rails 311a and 311b are slidably engaged with two sliders. The two sliders are respectively set at the bottom end of connecting plate 342a and the bottom end of connecting plate 342b. The two sliders can slide left and right along the two guide rails 311a and 311b. The two sliders and the two guide rails 311a and 311b play a guiding role in the process of mounting plates 34a and 34b moving left and right relative to the fixed frame 31.

[0052] The top of the connecting plate 342a is provided with a vertical plate 344a, and the top of the connecting plate 342b is provided with a vertical plate 344b. The two ends of the first roller 32 and the two ends of the second roller 33 are respectively set on the side of the vertical plates 344a and 344b that are close to each other via two bearing seats. The first roller 32 and the second roller 33 are arranged in parallel left and right. The movement of the connecting plates 342a and 342b can drive the vertical plates 344a and 344b, the first roller 32, and the second roller 33 to move left and right relative to the fixed frame 31.

[0053] Combination Figures 8 to 10 As shown, the cutter arm device 50 is located above the turret device 10 and includes a first cutter arm assembly 52, a second cutter arm assembly 54, a first cutter arm drive assembly, and a second cutter arm drive assembly. Both the first cutter arm assembly 52 and the second cutter arm assembly 54 are disposed between mounting plates 34a and 34b, and are arranged symmetrically from left to right. The first cutter arm drive assembly is located on the side of mounting plate 34a away from mounting plate 34b and is used to drive the first cutter arm assembly 52 to rotate relative to mounting plates 34a and 34b. The second cutter arm drive assembly is located on the side of mounting plate 34b away from mounting plate 34a and is used to drive the second cutter arm assembly 54 to rotate relative to mounting plates 34a and 34b. The left and right movement of mounting plates 34a and 34b can cause the first cutter arm assembly 52, the second cutter arm assembly 54, the first cutter arm drive assembly, and the second cutter arm drive assembly to move together. The first cutting arm assembly 52 is used to press the electrode sheet unwound by the first take-up and unwound assembly onto the electrode sheet roll on the second take-up and unwound assembly, so that the electrode sheet unwound by the first take-up and unwound assembly and the electrode sheet roll on the second take-up and unwound assembly are bonded together with the adhesive. After bonding, the electrode sheet unwound by the first take-up and unwound assembly is cut, thereby realizing roll changing. The second cutting arm assembly 54 is used to press the electrode sheet unwound by the second take-up and unwound assembly onto the electrode sheet roll on the first take-up and unwound assembly, so that the electrode sheet unwound by the second take-up and unwound assembly and the electrode sheet roll on the first take-up and unwound assembly are bonded together with the adhesive. After bonding, the electrode sheet unwound by the second take-up and unwound assembly is cut, thereby realizing roll changing.

[0054] The first cutter arm assembly 52 and the second cutter arm assembly 54 have the same structure. This embodiment mainly describes the structure of the second cutter arm assembly 54, and the structure of the first cutter arm assembly 52 will not be described again.

[0055] The second cutter arm assembly 54 includes a rotating shaft 5722a, a rotating shaft 5722b, two cutter arms 572, a first moving roller 573, a pressure roller 574, two pressure roller drive units 5744, a second moving roller 575, and a cutter module. The first moving roller 573, the pressure roller 574, the cutter module, and the second moving roller 575 are arranged sequentially along the direction from the first end to the second end of the two cutter arms 572.

[0056] The first ends of the rotating shaft 5722a and the first ends of the rotating shaft 5722b are rotatably disposed on the side of the mounting plate 34a and the mounting plate 34b that are close to each other. Specifically, the side of the mounting plate 34a and the mounting plate 34b that are close to each other are provided with two mounting holes, and the first ends of the rotating shaft 5722a and the first ends of the rotating shaft 5722b are rotatably disposed in the two mounting holes through bearings.

[0057] The two ends of the first moving roller 573 are connected to the second ends of the two rotating shafts 5722a and 5722b, respectively.

[0058] The first ends of the two cutting arm swing arms 572 are connected to the second ends of the two rotating shafts 5722a and 5722b, respectively. The second ends of the two cutting arm swing arms 572 extend away from the mounting plates 34a and 34b, respectively, and protrude from the mounting plates 34a and 34b. One cutting arm swing arm 572 is located above one of the first chucks 14 and the second chuck 15, and the other cutting arm swing arm 572 is located above the other first chucks 14 and the second chuck 15. The lengths of the first moving roller 573, the pressure roller 574, the cutter 5765 of the cutting module, and the second moving roller 575 are all greater than the length of the electrode roll.

[0059] In this embodiment, both cutter arms 572 are V-shaped cutter arms 572.

[0060] The second moving roller 575 is disposed between the second ends of the two cutter swing arms 572. Specifically, the two ends of the second moving roller 575 are respectively disposed between the second ends of the two cutter swing arms 572 through fixed seats.

[0061] The pressure roller 574 is located between the two cutter arms 572, with its two ends corresponding to the corners of the two cutter arms 572. The two ends of the pressure roller 574 are connected to the first ends of the two pressure roller arms 5742, and the second ends of the two pressure roller arms 5742 are respectively located on the adjacent sides of the two cutter arms 572. Specifically, two pressure roller arm connecting shafts 57422 are respectively provided on the adjacent sides of the two cutter arms 572. The second ends of the two pressure roller arms 5742 are respectively sleeved on the outer circumference of the two pressure roller arm connecting shafts 57422 and can rotate relative to the corresponding pressure roller arm connecting shafts 57422. Two pressure roller drive units 5744 are used to drive two pressure roller swing arms 5742 to rotate relative to two cutter swing arms 572. The pressure roller drive units 5744 are preferably cylinders. Specifically, a crossbeam 57442 is provided between the two cutter swing arms 572, with both ends of the crossbeam 57442 respectively located on the adjacent sides of the two cutter swing arms 572. Two cylinders are respectively located at both ends of the crossbeam 57442. The crossbeam 57442 is located between the first moving roller 573 and the connecting shaft 57422 of the two pressure roller swing arms, which is located between the crossbeam 57442 and the pressure roller 574. The two cylinders are inclined relative to the crossbeam 57442 (see...). Figure 10 The cylinder shafts of the two cylinders are respectively connected to the second ends of the two pressure roller swing arms 5742. By extending and retracting the cylinder shafts of the two cylinders relative to the crossbeam 57442 in the inclined direction, the two pressure roller swing arms 5742 can be driven to rotate relative to the two cutter swing arms 572 around the axis of the two pressure roller swing arm connecting shaft 57422. The pressure roller 574 can rotate together with the two pressure roller swing arms 5742.

[0062] Two sensor mounting bases 5782 are respectively provided at the corners of the two cutting arm swing arms 572. The two sensor mounting bases 5782 are located between the two cutting arm swing arms 572. The bottom ends of the two sensor mounting bases 5782 protrude from the bottom ends of the two cutting arm swing arms 572 and are respectively provided with two fiber optic sensors 5784. The two fiber optic sensors 5784 are arranged in a front-to-back manner and are used to detect the electrode roll.

[0063] The cutter module includes a cutter shaft 5762, two cutter mounting bases 5763, a cutter mounting plate 5764, a cutter 5765, and a cutter drive unit 57624.

[0064] The cutter shaft 5762 and the cutter drive unit 57624 are respectively disposed on adjacent sides of the two cutter arms 572. The cutter shaft 5762 can rotate relative to the corresponding cutter arm 572, and the cutter shaft 5762 is close to the mounting plate 34a. In this embodiment, the end of the cutter shaft 5762 away from the cutter drive unit 57624 is disposed in the mounting hole of the cutter arm 572 close to the mounting plate 34a via a bearing. The cutter drive unit 57624 is close to the mounting plate 34b.

[0065] The first ends of the two cutter fixing seats 5763 are respectively disposed at both ends of the cutter fixing plate 5764. The second end of one cutter fixing seat 5763 is connected to the end of the cutter rotating shaft 5762 near the cutter driving unit 57624, and the second end of the other cutter fixing seat 5763 is connected to the cutter driving unit 57624. In this embodiment, the cutter driving unit 57624 is preferably a rotary cylinder, and the second end of the other cutter fixing seat 5763 is connected to the cylinder shaft of the rotary cylinder. The cutter fixing plate 5764 is located between the pressure roller 574 and the two cutter fixing seats 5763. The cutter 5765 is disposed on the side of the cutter fixing plate 5764 away from the pressure roller 574, and the cutter 5765 protrudes from the bottom end of the cutter fixing plate 5764. The cutter 5765 is used to cut the electrode sheet. The rotary cylinder drives the cutter holder 5763 connected to it to rotate around the cylinder shaft relative to the two cutter arms 572, thereby driving the other cutter holder 5763, the cutter shaft 5762, the cutter fixing plate 5764, and the cutter 5765 to rotate together.

[0066] A cutter guard 5766 is provided between the cutter fixing plate 5764 and the pressure roller 574. The two ends of the cutter guard 5766 are respectively located on the adjacent sides of the two cutter swing arms 572. The cutter guard 5766 protects the cutter 5765.

[0067] A dust collection box 577 is located above the cutting module, with its two ends positioned on opposite sides of the two cutting arm swing arms 572. A vacuum connector is located at the top of the dust collection box 577 for connecting to a vacuuming mechanism. A suction hole corresponding to the cutting module is located at the bottom of the dust collection box 577. By evacuating the dust collection box 577 through this suction hole, debris and dust generated after cutting the electrode sheets can be extracted.

[0068] The first cutting arm drive assembly includes a first drive motor 562 and a first reducer 563. The first drive motor 562 is mounted on the first reducer 563 and connected to the first reducer 563. The first drive motor 562 is preferably a servo motor, and the first reducer 563 is preferably a rotary reducer. The first reducer 563 is located on the side of the mounting plate 34a away from the mounting plate 34b. The first end of the rotation shaft 5722a of the first cutting arm assembly 52 is connected to the first reducer 563. In practical applications, the first drive motor 562 can drive the rotation shaft 5722a of the first cutting arm assembly 52 to rotate relative to the mounting plate 34a through the first reducer 563. The rotation of the rotation shaft 5722a can drive the first cutting arm assembly 52 to rotate. The first moving roller 573 and the rotating shaft 5722b rotate, thereby driving the two cutting arm swing arms 572 to rotate relative to the mounting plate 34a and the mounting plate 34b around the axes of the two rotating shafts 5722a and 5722b. The pressure roller 574, the cutting module, the second moving roller 575, the dust collection box 577, and the two fiber optic sensors 5784 can rotate together with the two cutting arm swing arms 572. In this way, the first cutting arm swing arm drive assembly can drive the first cutting arm swing arm assembly 52 to rotate relative to the mounting plate 34a and the mounting plate 34b.

[0069] The second cutter arm drive assembly includes a second drive motor 552 and a second reducer 553. The second drive motor 552 is mounted on the second reducer 553 and connected to it. The second drive motor 552 is preferably a servo motor, and the second reducer 553 is preferably a rotary reducer. The second reducer is located on the side of the mounting plate 34b away from the mounting plate 34a. The first end of the rotation shaft 5722b of the second cutter arm assembly 54 is connected to the second reducer 553. In practical applications, the second drive motor 552 drives the rotation shaft 5722b of the second cutter arm assembly 54 to rotate relative to the mounting plate 34b via the second reducer 553. The rotation of the rotation shaft 5722b can drive the first... The rotating roller 573 and the rotating shaft 5722a rotate, thereby driving the two cutting arm swing arms 572 to rotate around the axes of the two rotating shafts 5722a and 5722b relative to the mounting plate 34a and mounting plate 34b. The pressure roller 574, the cutting module, the second rotating roller 575, the dust collection box 577, and the two fiber optic sensors 5784 can rotate together with the two cutting arm swing arms 572. In this way, the second cutting arm swing arm drive assembly can drive the second cutting arm swing arm assembly 54 to rotate relative to the mounting plate 34a and mounting plate 34b.

[0070] The working principle of the shaftless turret winding and unwinding mechanism of the present invention is as follows:

[0071] like Figure 11As shown, two rolls of electrode material 200 and 300 are first installed onto two first chucks 14 and two second chucks 15 respectively. Then, the two second chucks 15 and the electrode material roll 300 are driven to rotate relative to the two second connecting arms 13 by the second chuck drive unit 19, so as to unwind the electrode material roll 300. The electrode material roll 300 can pass through the first moving roller 573, the second passing roller 33, the first passing roller 32, the first fixed roller 70, and the third fixed roller 90 of the second cutter swing arm assembly 54 in sequence. When the electrode roll 300 is completely depleted, the second cutter swing arm assembly 54 is first driven clockwise to a predetermined position by the second cutter swing arm drive assembly. At this time, the second moving roller 575 and pressure roller 574 of the second cutter swing arm assembly 54 contact the electrode roll 300. The cutter swing arm 572 is set in a V-shape to prevent the electrode roll 300 from breaking. Then, the mounting plate 34a and mounting plate 34b are driven to move to the left relative to the fixed frame 31 by the movement drive assembly, thereby driving the first cutter swing arm assembly 52 and the second cutter swing arm assembly 54 to move to the left to the predetermined position. Figure 12 As shown, the first rotating shaft 114 is then driven to rotate clockwise relative to the base by the first rotating drive unit 16, thereby causing the two first connecting arms 12 to rotate clockwise around the axis of the first rotating shaft 114. The two first clamps 14 and the electrode roll 200 can rotate together with the two first connecting arms 12. When the two ends of the electrode roll 300 are located between the two fiber optic sensors 5784 of the second cutter swing arm assembly 54, the two fiber optic sensors 5784 can detect the electrode roll 300. At this time, the first rotating drive unit 16 stops driving the first rotating shaft 114 to rotate clockwise relative to the base, thereby stopping the electrode roll 200 from rotating. At this time, the electrode roll 200 has reached the roll-changing position. Figure 12As shown, the first chuck drive unit 18 drives the two first chucks 14 and the electrode roll 200 to accelerate rotation until the linear velocity of the maximum outer diameter of the electrode roll 200 matches the traveling speed of the electrode in the electrode roll 300. Then, the two pressure roller drive units 5744 of the second cutter swing arm assembly 54 drive the pressure roller 574 to rotate clockwise to press the electrode in the electrode roll 300 to the electrode roll 200, thereby bonding the electrode in the electrode roll 300 with the adhesive of the electrode roll 200. Then, the cutter drive unit 57624 drives the cutter 5765 to rotate counterclockwise to cut the electrode in the electrode roll 300, thus completing the roll change. After completion, the pressure roller 574 is driven back to its original position by the two pressure roller drive units 5744 of the second cutter swing arm assembly 54, and the cutter 5765 is driven back to its original position by the cutter drive unit 57624. Then, the second cutter swing arm assembly 54 is driven to rotate counterclockwise to return to its initial position by the second cutter swing arm drive assembly. Then, the first cutter swing arm assembly 52 and the second cutter swing arm assembly 54 are driven to move to the right to their initial positions by the movement drive assembly. Then, the first rotating shaft 114 is driven to rotate counterclockwise relative to the base by the first rotation drive unit 16 to return to its initial position, thereby driving the two first connecting arms 12, the two first chucks 14, and the electrode roll 200 back to their initial positions. Then, the two first chucks 14 and the electrode roll 200 are driven to rotate by the first chuck drive unit 18 to unwind the electrode roll 200. Then, the new electrode roll is installed into the two second chucks 15 to wait for the next roll change.

[0072] When the electrode roll 200 is exhausted, the first cutter arm drive assembly 52 is first driven to rotate counterclockwise to a predetermined position. At this time, the second moving roller 575 and pressure roller 574 of the first cutter arm drive assembly 52 contact the electrode roll 200. Then, the mounting plate 34a and mounting plate 34b are driven to move to the right relative to the fixed frame 31 to a predetermined position through the moving drive assembly. This drives the first cutter arm drive assembly 52 and the second cutter arm drive assembly 54 to move to the right to the predetermined position. Then, the second rotating drive unit 17 drives the second rotating shaft 115 to rotate counterclockwise relative to the base. This drives the two second connecting arms 13 to rotate counterclockwise around the axis of the second rotating shaft 115. The two second clamps 15 and the new electrode roll can rotate together with the two second connecting arms 13. When the two ends of the new electrode roll are located between the two fiber optic sensors 5784 of the first cutter arm drive assembly 52, the two... The fiber optic sensor 5784 detects a new electrode roll. At this point, the second rotation drive unit 17 stops driving the second rotating shaft 115 to rotate counterclockwise relative to the base, thus stopping the new electrode roll from rotating. The new electrode roll has now reached the roll-changing position. Then, the second chuck drive unit 19 drives the two second chucks 15 and the new electrode roll to accelerate until the linear velocity of the maximum outer diameter of the new electrode roll matches the traveling speed of the electrode on the electrode roll 200. Then, the two pressure roller drive units 5744 of the first cutter swing arm assembly 52 drive the pressure roller 574 to rotate counterclockwise so that the electrode of the electrode roll 200 is pressed into the new electrode roll by the pressure roller 574, so that the electrode of the electrode roll 200 is bonded to the adhesive of the new electrode roll. Then, the cutter drive unit 57624 drives the cutter 5765 to rotate clockwise so that the electrode of the electrode roll 200 is cut by the cutter 5765, thus completing the roll change. After completion, the pressure roller 574 is driven back to its original position by the two pressure roller drive units 5744 of the first cutter swing arm assembly 52, and the cutter 5765 is driven back to its original position by the cutter drive unit 57624. Then, the first cutter swing arm assembly is driven to rotate clockwise to return to the initial position by the first cutter swing arm drive assembly. Then, the first cutter swing arm assembly 52 and the second cutter swing arm assembly 54 are driven to move to the left to the initial position by the movement drive assembly. Then, the second rotating shaft 115 is driven to rotate clockwise relative to the base by the second rotation drive unit 17, thereby driving the two second connecting arms 13, the two second chucks 15 and the new electrode roll to return to the initial position. Then, the two second chucks 15 and the new electrode roll are driven to rotate by the second chuck drive unit 19 to unwind the electrode of the new electrode roll. Then, the new electrode roll is installed into the two first chucks 14 to wait for the next roll change.

[0073] This invention features a simple structure, small footprint, and ease of installation and debugging. Through the turret device 10, horizontal moving device 30, and cutter swing arm device 50, a slightly rotatable electrode roll works in conjunction with these components. This eliminates the need to swap the positions of the first and second winding / unwinding assemblies. The cutter swing arm device 50 presses the electrode from the working electrode roll onto a spare electrode roll to achieve splicing, followed by cutting to complete the roll change. During this process, the unwound electrode does not move significantly, preventing damage. The electrode roll diameter of this invention is compatible with sizes from 300 to 1200 mm, improving production efficiency, reducing labor costs, and greatly meeting user needs.

[0074] The shaftless turret winding and unwinding mechanism of the present invention can also be used as a mechanism for winding electrode sheets. In this case, both the first and second winding and unwinding assemblies are used to install empty rolls and wind the electrode sheets onto the empty rolls. The two first clamps 14 and the two second clamps 15 are used to install the empty rolls, and the installation method of the empty rolls is the same as the aforementioned method of installing electrode sheet rolls. The first cutter swing arm assembly 52 is used to press the electrode sheets wound by the first winding and unwinding assembly onto the empty rolls on the second winding and unwinding assembly so that the electrode sheets are bonded to the adhesive on the empty rolls on the second winding and unwinding assembly, and then cuts the electrode sheets after bonding, thereby realizing roll changing. The second cutter swing arm assembly 54 is used to press the electrode sheets wound by the second winding and unwinding assembly onto the empty rolls on the first winding and unwinding assembly so that the electrode sheets are bonded to the adhesive on the empty rolls on the first winding and unwinding assembly, and then cuts the electrode sheets after bonding, thereby realizing roll changing. Two fiber optic sensors 5784 are used to detect the empty electrode rolls.

[0075] The specific working principle is as follows:

[0076] First, two empty rolls are installed onto two first chucks 14 and two second chucks 15 respectively. The winding electrode sheet follows a similar path as described above, passing through a third fixed roller 90, a first fixed roller 70, a first guide roller 32, a second guide roller 33, and the second moving roller 575 of the first cutter swing arm assembly 52. ​​Then, the electrode sheet is bonded to the empty rolls using adhesive on the empty rolls. The first chuck drive unit 18 of the first take-up and unwinding assembly then drives the empty rolls on the two first chucks 14 to rotate, thereby winding the electrode sheet onto the empty rolls. When the empty spools on the two first chucks 14 are filled with electrode sheets, the first cutter arm drive assembly 52 is driven to rotate counterclockwise to a predetermined position. At this time, the second moving roller 575 and pressure roller 574 of the first cutter arm drive assembly 52 come into contact with the electrode sheets wound by the first take-up and unwinding assembly. Then, the moving drive assembly drives the mounting plates 34a and 34b to move to the right relative to the fixed frame 31 to a predetermined position, thereby driving the first cutter arm drive assembly 52 and the second cutter arm drive assembly 54 to move to the right to the predetermined position. The second rotating shaft 115 is then driven to rotate counterclockwise relative to the base by the second rotating drive unit 17. This causes the two second connecting arms 13 to rotate counterclockwise around the axis of the second rotating shaft 115. The empty drums on the two second chucks 15 rotate together with the two second connecting arms 13. When the two ends of the empty drums on the two second chucks 15 are located between the two fiber optic sensors 5784 of the first cutter arm assembly 52, the two fiber optic sensors 5784 can detect the empty drums on the two second chucks 15. The drum, at this time, stops the second rotating shaft 115 from rotating counterclockwise relative to the base via the second rotation drive unit 17, thereby stopping the rotation of the empty drums on the two second chucks 15. At this time, the empty drums on the two second chucks 15 reach the changing position. Then, the second chuck drive unit 19 drives the two second chucks 15 and the empty drums on the two second chucks 15 to accelerate rotation until the linear velocity of the maximum outer diameter of the empty drums on the two second chucks 15 matches the traveling speed of the electrode sheet wound by the first take-up and unwinding assembly. Then... The two pressure roller drive units 5744 of the first cutter swing arm assembly 52 drive the pressure roller 574 to rotate counterclockwise so that the electrode sheet wound by the first take-up and unwind assembly is pressed onto the empty roll on the two second chucks 15, thereby bonding the electrode sheet wound by the first take-up and unwind assembly with the adhesive on the empty roll on the two second chucks 15. Then, the cutter drive unit 57624 drives the cutter 5765 to rotate clockwise so that the electrode sheet wound by the first take-up and unwind assembly is cut by the cutter 5765, thus completing the roll change.After completion, the pressure roller 574 is driven back to its original position by the two pressure roller drive units 5744 of the first cutter swing arm assembly 52, and the cutter 5765 is driven back to its original position by the cutter drive unit 57624. Then, the first cutter swing arm assembly 52 is driven to rotate clockwise to return to its initial position by the first cutter swing arm drive assembly. Then, the first cutter swing arm assembly 52 and the second cutter swing arm assembly 54 are driven to move to the left to their initial positions by the movement drive assembly. Then, the second rotating shaft 115 is driven to rotate clockwise relative to the base by the second rotation drive unit 17, thereby driving the two second connecting arms 13, the two second chucks 15, and the empty drum back to their initial positions. Then, the two second chucks 15 and the empty drum are driven to rotate by the second chuck drive unit 19 to achieve the winding of the electrode sheet. Then, a new empty drum is installed on the two first chucks 14 to wait for the next roll change.

[0077] When the empty drums on the two second chucks 15 of the second take-up and unwrap assembly are fully loaded with electrode sheets, the second cutter swing arm drive assembly drives the second cutter swing arm assembly 54 to rotate clockwise to a predetermined position. At this time, the second moving roller 575 and pressure roller 574 of the second cutter swing arm assembly 54 contact the electrode sheets wound by the second take-up and unwrap assembly. Then, the moving drive assembly drives the mounting plates 34a and 34b to move to the left relative to the fixed frame 31 to a predetermined position, thereby driving the first cutter swing arm assembly 52 and the second cutter swing arm assembly 54 to move to the left to the predetermined position. Then, the first rotation drive unit 16 drives the first rotating shaft 114 to rotate clockwise relative to the base, thereby driving the two first connecting arms 12 to rotate clockwise around the axis of the first rotating shaft 114. The two first chucks 14 and the new empty drum can rotate together with the two first connecting arms 12. When the two ends of the new empty drum are located between the two fiber optic sensors 5784 of the second cutter swing arm assembly 54, Two fiber optic sensors 5784 detect a new empty roll. At this time, the first rotation drive unit 16 stops driving the first rotating shaft 114 to rotate clockwise relative to the base, thus stopping the new empty roll from rotating. The new empty roll has now reached the roll change position. Then, the first chuck drive unit 18 drives the two first chucks 14 and the new empty roll to accelerate rotation until the linear velocity of the maximum outer diameter of the new empty roll matches the travel speed of the electrode sheet wound by the second take-up and unwinding assembly. Then, the two pressure roller drive units 5744 of the second cutter swing arm assembly 54 drive the pressure roller 574 to rotate clockwise to press the electrode sheet wound by the second take-up and unwinding assembly onto the new empty roll, thus bonding the electrode sheet wound by the second take-up and unwinding assembly to the adhesive of the new empty roll. Then, the cutter drive unit 57624 drives the cutter 5765 to rotate counterclockwise to cut the electrode sheet wound by the second take-up and unwinding assembly, thus completing the roll change. After completion, the pressure roller 574 is driven back to its original position by the two pressure roller drive units 5744 of the second cutter swing arm assembly 54, and the cutter 5765 is driven back to its original position by the cutter drive unit 57624. Then, the second cutter swing arm assembly 54 is driven to rotate counterclockwise to return to its initial position by the second cutter swing arm drive assembly. Then, the first cutter swing arm assembly 52 and the second cutter swing arm assembly 54 are driven to move to the right to their initial positions by the movement drive assembly. Then, the first rotating shaft 114 is driven to rotate counterclockwise relative to the base by the first rotation drive unit 16 to return to its initial position, thereby driving the two first connecting arms 12, the two first chucks 14, and the new empty drum to return to their initial positions. Then, the two first chucks 14 and the new empty drum are driven to rotate by the first chuck drive unit 18 to achieve the winding of the electrode sheet. Then, the new empty drum is installed into the two second chucks 15 to wait for the next roll change.

[0078] The present invention also provides a lithium battery manufacturing equipment, such as a coating machine, which includes the aforementioned shaftless turret winding and unwinding mechanism. By adopting the shaftless turret winding and unwinding mechanism, automatic roll changing can be achieved, which can avoid damage to the electrode roll, improve production efficiency, reduce labor costs, and greatly meet the needs of users.

[0079] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A shaftless turret winding and unwinding mechanism, characterized in that, Includes a turret assembly, a horizontal moving assembly, and a cutter swing arm assembly; The turret device includes a base, a first take-up and unwind assembly, a second take-up and unwind assembly, a first rotation drive unit, and a second rotation drive unit. The first take-up and unwind assembly and the second take-up and unwind assembly are respectively disposed at the top of the base and are arranged symmetrically from left to right. The first rotation drive unit is used to drive the first take-up and unwind assembly to rotate relative to the base, and the second rotation drive unit is used to drive the second take-up and unwind assembly to rotate relative to the base. The horizontal moving device includes a fixed frame located above the turret device, two mounting plates arranged in a front-to-back orientation, and a moving drive assembly. The two mounting plates are slidably connected to the fixed frame, and the moving drive assembly is used to drive the two mounting plates to move left and right relative to the fixed frame. The cutter swing arm device is located above the turret device and includes a first cutter swing arm assembly, a second cutter swing arm assembly, a first cutter swing arm drive assembly, and a second cutter swing arm drive assembly. The first cutter swing arm assembly and the second cutter swing arm assembly are both disposed between the two mounting plates and are arranged symmetrically from left to right. The first cutter swing arm drive assembly and the second cutter swing arm drive assembly are respectively disposed on one side of the two mounting plates and are respectively used to drive the first cutter swing arm assembly and the second cutter swing arm assembly to rotate relative to the two mounting plates. Both the first and second cutter arm assemblies include two rotating shafts, two cutter arms, a first moving roller, a pressure roller, and two pressure roller drive units. The first ends of the two rotating shafts are rotatably disposed on adjacent sides of the two mounting plates. The first ends of the two cutter arms are connected to the second ends of the two rotating shafts, and the second ends of the two cutter arms extend away from the two mounting plates. The two ends of the first moving roller are connected to the second ends of the two rotating shafts. The pressure roller is located between the two cutter arms, and the two ends of the pressure roller are connected to the first ends of the two pressure roller arms. The second ends of the two pressure roller arms are disposed on adjacent sides of the two cutter arms. The two pressure roller drive units are used to drive the two pressure roller arms to rotate relative to the two cutter arms. The first cutter swing arm drive assembly is connected to the first end of one of the rotating shafts of the first cutter swing arm assembly and is used to drive the rotating shaft to rotate relative to the corresponding mounting plate. The second cutter swing arm drive assembly is connected to the first end of one of the rotating shafts of the second cutter swing arm assembly and is used to drive the rotating shaft to rotate relative to the corresponding mounting plate.

2. The shaftless turret winding and unwinding mechanism according to claim 1, characterized in that, The first and second take-up / unwinding assemblies each include a rotating shaft rotatably disposed at the top of the base, two connecting arms arranged in a front-to-back orientation, two clamps arranged in a front-to-back orientation, and a clamp driving unit. The first rotation driving unit is used to drive the rotating shaft of the first take-up / unwinding assembly to rotate relative to the base, and the second rotation driving unit is used to drive the rotating shaft of the second take-up / unwinding assembly to rotate relative to the base. The bottom ends of the two connecting arms are respectively connected to the rotating shaft, and the two clamps are respectively provided on the adjacent sides of the top ends of the two connecting arms. The clamp driving unit is used to drive one of the clamps to rotate relative to the corresponding connecting arm.

3. The shaftless turret winding and unwinding mechanism according to claim 2, characterized in that, The two connecting arms can move toward or away from each other along the pivot axis. The first and second take-up and unwinding assemblies each include two motion drive units for driving the two connecting arms to move toward or away from each other.

4. The shaftless turret winding and unwinding mechanism according to claim 1, characterized in that, The mobile drive assembly includes a mobile drive module disposed at the top of the fixed frame and two synchronous belt units. The two synchronous belt units are respectively disposed at the front and rear sides of the top of the fixed frame. Each synchronous belt unit includes a driving wheel, a driven wheel, and a synchronous belt sleeved on the outer periphery of the driving wheel and the driven wheel. The driving wheels of the two synchronous belt units are respectively connected to the mobile drive module through two couplings. The two mounting plates are located inside the fixed frame, with their top and bottom ends located above and below the fixed frame, respectively. The two mounting plates are respectively close to the front inner wall and the rear inner wall of the fixed frame. Each mounting plate corresponds to one synchronous belt unit, and each mounting plate is located between the driving wheel and the driven wheel of the corresponding synchronous belt unit and connected to the synchronous belt of the corresponding synchronous belt unit.

5. The shaftless turret winding and unwinding mechanism according to claim 1, characterized in that, Both the first cutter arm assembly and the second cutter arm assembly include a second moving roller, which is disposed between the second ends of the two cutter arms.

6. The shaftless turret winding and unwinding mechanism according to claim 5, characterized in that, Both the first and second cutter arm assemblies include a cutter module disposed between the pressure roller and the second moving roller. The cutter module includes two cutter fixing seats, a cutter fixing plate, a cutter, a cutter rotating shaft, and a cutter driving unit. The cutter rotating shaft and the cutter driving unit are respectively disposed on the adjacent sides of the two cutter arms. The cutter rotating shaft can rotate relative to the corresponding cutter arm. The first ends of the two cutter fixing seats are respectively disposed at both ends of the cutter fixing plate. The second end of one cutter fixing seat is connected to the cutter rotating shaft, and the second end of the other cutter fixing seat is connected to the cutter driving unit and rotated by the cutter driving unit. The cutter fixing plate is located between the pressure roller and the two cutter fixing seats. The cutter is disposed on the side of the cutter fixing plate away from the pressure roller, and the cutter portion protrudes from the bottom end of the cutter fixing plate.

7. The shaftless turret winding and unwinding mechanism according to claim 6, characterized in that, A cutter guard is provided between the cutter fixing plate and the pressure roller, and the two ends of the cutter guard are respectively located on the adjacent sides of the two cutter swing arms.

8. The shaftless turret winding and unwinding mechanism according to claim 6, characterized in that, A dust collection box is provided above the cutter module. The two ends of the dust collection box are respectively located on the adjacent side of the two cutter swing arms. A vacuum connector is provided at the top of the dust collection box, and a suction hole corresponding to the cutter module is provided at the bottom of the dust collection box.

9. The shaftless turret winding and unwinding mechanism according to claim 1, characterized in that, Both cutter arms are V-shaped cutter arms, and the two ends of the pressure roller correspond to the corners of the two cutter arms respectively. Two sensor mounting seats are provided at the corners of the two cutter arms respectively. The bottom ends of the two sensor mounting seats protrude from the bottom ends of the two cutter arms respectively and are provided with two fiber optic sensors. The two fiber optic sensors are arranged in a front-to-back facing arrangement.

10. A lithium battery manufacturing equipment, characterized in that, Includes the shaftless turret winding and unwinding mechanism as described in any one of claims 1-9.

Images