A lithium battery electrode die-cutting feeding mechanism and method

Abstract

The present application relates to the field of lithium battery pole piece production, and particularly to a die-cutting feeding mechanism and method for lithium battery pole pieces, which includes a frame, a feeding component, a collecting component, and a feeding adjustment component. The feeding component includes a feeding roller and a feeding conveying roller, and both the feeding roller and the feeding conveying roller are rotatably fitted to the frame; the collecting component includes a collecting roller and a collecting conveying roller, and both the collecting roller and the collecting conveying roller are rotatably fitted to the frame; the feeding adjustment component includes a first adjustment cone pulley and a second adjustment cone pulley. The conical surface of the first adjustment cone pulley is arranged opposite to the conical surface of the second adjustment cone pulley, and the first adjustment cone pulley and the second adjustment cone pulley are coaxially arranged. A feeding synchronous belt is wound between the first adjustment cone pulley and the second adjustment cone pulley, and the feeding roller is coaxially installed on the second adjustment cone pulley. The present application has the effect of ensuring the die-cutting accuracy of the lithium battery pole piece die-cutting machine.

Description

Technical Field

[0001] This application relates to the field of lithium battery pole piece production, and particularly to a die-cutting feeding mechanism and method for lithium battery pole pieces. Background Art

[0002] During the production process of lithium battery pole pieces, die-cutting is generally required to cut the lithium battery pole pieces into a formed shape from the pole piece coil.

[0003] In the existing related technologies, the pole pieces need to be die-cut by a lithium battery pole piece die-cutting machine. The lithium battery pole piece die-cutting machine includes a feeding mechanism, a die-cutting mechanism, a discharging mechanism, and a collecting mechanism. The feeding mechanism includes a feeding roller, a feeding conveying roller, and a feeding motor. The feeding roller is used to place the pole piece coil, the feeding conveying roller is used to convey the pole piece coil to the die-cutting mechanism, and the feeding motor is used to drive the feeding roller and the feeding conveying roller simultaneously, so as to make the feeding roller and the feeding conveying roller rotate simultaneously, thereby reducing the occurrence of jamming of the pole piece coil and ensuring the die-cutting accuracy.

[0004] The die-cutting mechanism is used to die-cut the pole piece coil, and the discharging mechanism is used to convey the die-cut lithium battery pole pieces out of the die-cutting machine;

[0005] The collecting mechanism includes a collecting roller, a collecting conveying roller, and a collecting motor. The collecting roller is used to collect the die-cut pole piece coil, the collecting conveying roller is used to convey the die-cut pole pieces to the collecting roller, and the collecting motor is used to drive the collecting roller and the collecting conveying roller simultaneously, so as to make the collecting roller and the collecting conveying roller rotate simultaneously, thereby reducing the occurrence of jamming of the pole piece coil and further ensuring the die-cutting accuracy.

[0006] In view of the above related technologies, after the lithium battery pole piece die-cutting machine runs for a long time, an error is likely to occur between the feeding roller driven by the feeding motor and the collecting roller driven by the collecting motor, so that the pole piece coil is likely to stay in the die-cutting mechanism after die-cutting, affecting the die-cutting of the die-cutting mechanism and resulting in a decrease in die-cutting accuracy. Summary of the Invention

[0007] In order to ensure the die-cutting accuracy of the lithium battery pole piece die-cutting machine, this application provides a die-cutting feeding mechanism for lithium battery pole pieces.

[0008] A die-cutting feeding mechanism for lithium battery pole pieces provided by this application adopts the following technical solutions:

[0009] A die-cutting feeding mechanism for lithium battery pole pieces includes a frame, a feeding assembly, a collecting assembly, and a feeding adjustment assembly. The feeding assembly includes a feeding roller and a feeding conveying roller, and both the feeding roller and the feeding conveying roller are rotationally fitted to the frame;

[0010] The collecting assembly includes a collecting roller and a collecting conveying roller, and both the collecting roller and the collecting conveying roller are rotationally fitted to the frame;

[0011] The feeding adjustment assembly includes a first adjustment cone pulley, a second adjustment cone pulley, a cone pulley adjustment member, and a tension adjustment member. The conical surfaces of the first adjustment cone pulley and the second adjustment cone pulley are arranged facing each other, and the first adjustment cone pulley and the second adjustment cone pulley are coaxially arranged. A feeding synchronous belt is wound between the first adjustment cone pulley and the second adjustment cone pulley, and the feeding roller is coaxially installed on the second adjustment cone pulley;

[0012] The cone pulley adjustment member is used to drive the first adjustment cone pulley and the second adjustment cone pulley to move towards or away from each other, and the tension adjustment member is used to adjust the tightness of the feeding synchronous belt;

[0013] The machine frame is provided with a die-cutting conveying motor, and the die-cutting conveying motor is used to drive the feeding synchronous belt, the feeding conveying roller, and the winding conveying roller to rotate simultaneously.

[0014] By adopting the above technical solution, the die-cutting conveying motor drives the feeding synchronous belt, the feeding conveying roller, and the winding conveying roller to rotate simultaneously, so that the speed at which the pole piece coil is input into the die-cutting mechanism is the same as the speed at which it is output from the die-cutting mechanism. Furthermore, it is easy for the pole piece coil to stay in the die-cutting mechanism after die-cutting, which affects the die-cutting of the die-cutting mechanism, thereby ensuring the die-cutting accuracy of the lithium battery pole piece die-cutting machine.

[0015] Optionally, the cone pulley adjustment member includes a first adjustment plate, a second adjustment plate, and a cone pulley adjustment bottom plate. The first adjustment cone pulley is rotatably fitted to the first adjustment plate, the second adjustment cone pulley is rotatably fitted to the second adjustment plate, both the first adjustment plate and the second adjustment plate are slidably fitted to the cone pulley adjustment bottom plate, and the cone pulley adjustment bottom plate is provided with an adjustment driving member for driving the first adjustment plate and the second adjustment plate to move towards or away from each other.

[0016] By adopting the above technical solution, the adjustment driving member drives the first adjustment plate and the second adjustment plate to slide towards or away from each other, thereby driving the first adjustment cone pulley and the second adjustment cone pulley to move towards or away from each other, which is beneficial to ensuring the stability of the first adjustment cone pulley and the second adjustment cone pulley during movement.

[0017] Optionally, the tension adjustment member includes a tension adjustment block, a tension adjustment bottom plate, and a tension elastic member. The tension adjustment block is slidably fitted to the tension adjustment bottom plate, both the first adjustment cone pulley and the second adjustment cone pulley are installed on the tension adjustment block, and the two ends of the tension elastic member are respectively installed on the tension adjustment block and the tension adjustment bottom plate.

[0018] By adopting the above technical solution, when the first adjusting cone pulley and the second adjusting cone pulley move towards or away from each other, the tension elastic member deforms, so that the positions of the first adjusting cone pulley and the second adjusting cone pulley change with the scaling of the feeding synchronous belt, which is beneficial to reducing the wear between the first adjusting cone pulley and the second adjusting cone pulley and the feeding synchronous belt.

[0019] Optionally, the feeding synchronous belt is wound around the feeding conveying roller, the first synchronous belt is wound around the feeding conveying roller, and the first synchronous belt is wound around the output shaft of the die-cutting conveying motor.

[0020] By adopting the above technical solution, the die-cutting conveying motor drives the feeding conveying roller to rotate through the first synchronous belt, and then drives the feeding roller to rotate through the feeding synchronous belt. The transmission mode is simple, which is beneficial to reducing the load of the die-cutting conveying motor.

[0021] Optionally, the first adjusting cone pulley is coaxially rotatably matched with a first adjusting disc, the second adjusting cone pulley is coaxially rotatably matched with a second adjusting disc, the first adjusting disc and the second adjusting disc are arranged opposite to each other, and the first adjusting disc and the second adjusting disc are arranged close to each other.

[0022] By adopting the above technical solution, when the pole piece coil is installed on the feeding roller, the first adjusting disc and the second adjusting disc are both tightly abutted against the feeding synchronous belt, so that the feeding roller is not easily difficult to rotate due to the feeding conveying roller, the receiving conveying roller and the die-cutting conveying motor, thus facilitating the rotation and adjustment of the angle of the pole piece coil after the pole piece coil is installed on the feeding roller and facilitating the traction of the pole piece coil.

[0023] Optionally, the machine frame is provided with a deviation rectifying assembly, and the deviation rectifying assembly is used to drive the feeding roller to move along its own axis direction.

[0024] By adopting the above technical solution, the deviation rectifying assembly makes the feeding roller move along its own axis direction, so that the axis of the pole piece coil installed on the feeding roller deflects, and then drives the conveying direction of the pole piece coil leaving the feeding roller to deflect, so as to ensure the conveying accuracy of the pole piece coil on the premise of not easily damaging the thin and soft lithium battery pole piece.

[0025] Optionally, the machine frame is rotatably matched with a feeding transmission member, and the feeding transmission member includes a transmission sleeve, a cone pulley connecting rod and a roller body connecting rod. The transmission sleeve is rotatably matched with the machine frame, the cone pulley connecting rod is coaxially and fixedly installed on the second adjusting cone pulley, the cone pulley connecting rod is slidably matched with the transmission sleeve, the roller body connecting rod is coaxially installed on the feeding roller, the roller body connecting rod is slidably matched with the transmission sleeve, and the roller body connecting rod and the cone pulley connecting rod are coaxially arranged.

[0026] By adopting the above technical solution, the second adjusting cone pulley drives the cone pulley connecting rod to rotate, so that the transmission sleeve drives the roller connecting rod to rotate, and further the feeding roller rotates. The structure is compact, which is beneficial to reducing the volume of the lithium battery pole piece die cutting machine.

[0027] Optionally, the feeding roller is detachably installed on the roller connecting rod; the deviation rectifying assembly includes a rotating head, a support frame and a linear driving member. The feeding roller is rotationally matched with the rotating head, the rotating head is installed on the support frame, and the linear driving member is used to drive the support frame to move along the axis direction of the feeding roller.

[0028] By adopting the above technical solution, when installing the pole piece coil on the feeding roller, rotate the rotating head to the position where the pole piece coil is located, and then lift and place the pole piece coil on the feeding roller, which is beneficial to reducing the installation difficulty of the pole piece coil with large weight and large volume.

[0029] Optionally, a connecting wheel is coaxially and fixedly installed on the roller connecting rod, teeth are arranged on the outer peripheral surface of the connecting wheel, a connecting cylinder is coaxially and fixedly installed on the feeding roller, a connecting groove is formed in the connecting cylinder, and tooth grooves corresponding to the teeth are arranged on the inner wall of the connecting groove;

[0030] A wheel body magnet is fixedly installed on the connecting wheel, a cylinder body magnet is fixedly installed on the connecting cylinder, and the wheel body magnet is adsorbed on the cylinder body magnet.

[0031] By adopting the above technical solution, when installing the pole piece coil on the feeding roller, the linear driving member makes the connecting wheel move away from the connecting cylinder, so that the operator has enough operating surface to install the pole piece coil on the feeding roller. After the pole piece coil is installed on the feeding roller, the linear driving member makes the connecting wheel move closer to the connecting cylinder, so that the teeth are engaged with the tooth grooves and the wheel body magnet is adsorbed on the cylinder body magnet, and the connecting wheel is fixedly installed on the connecting cylinder. The process is convenient and fast.

[0032] The present application also provides a die cutting method for a lithium battery pole piece die cutting and feeding mechanism, which specifically includes the following steps:

[0033] S1. Place the pole piece coil;

[0034] S2. Coaxially install the feeding roller on the second adjusting cone pulley;

[0035] S3. Start the die cutting and conveying motor.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. The die-cutting conveying motor rotates the driving unwinding synchronous belt, the unwinding conveying roller, and the rewinding conveying roller simultaneously, so that the speed of the pole piece coil input into the die-cutting mechanism is the same as the speed output from the die-cutting mechanism. As a result, the pole piece coil is likely to stay in the die-cutting mechanism after die-cutting, which affects the die-cutting of the die-cutting mechanism, thereby ensuring the die-cutting accuracy of the lithium battery pole piece die-cutting machine.

[0038] 2. When installing the pole piece coil on the unwinding roller, make both the first adjusting disc and the second adjusting disc tightly fit against the unwinding synchronous belt. As a result, the unwinding roller is not likely to be difficult to rotate due to the unwinding conveying roller, the rewinding conveying roller, and the die-cutting conveying motor, thereby facilitating the rotation and adjustment of the angle of the pole piece coil after installing the pole piece coil on the unwinding roller and facilitating the traction of the pole piece coil.

[0039] 3. When installing the pole piece coil on the unwinding roller, the linear driving member moves the connecting wheel away from the connecting cylinder, so that the operator has enough operating space to install the pole piece coil on the unwinding roller. After the pole piece coil is installed on the unwinding roller, the linear driving member moves the connecting wheel closer to the connecting cylinder, meshes the teeth with the tooth grooves, and the wheel body magnet adsorbs the cylinder magnet, so that the connecting wheel is fixedly installed on the connecting cylinder, and the process is convenient and fast. Description of the Drawings

[0040] Figure 1 is the first overall schematic diagram of the overall structure of the embodiment of the present application.

[0041] Figure 2 is the overall schematic diagram of the deviation rectifying component of the embodiment of the present application.

[0042] Figure 3 is the partial sectional schematic diagram of the overall structure of the embodiment of the present application.

[0043] Figure 4 is the overall schematic diagram of the unwinding transmission member of the embodiment of the present application.

[0044] Figure 5 is the schematic diagram of the connection relationship between the tension adjusting member and the cone wheel adjusting member of the embodiment of the present application.

[0045] Figure 6 is the second overall schematic diagram of the overall structure of the embodiment of the present application.

[0046] Description of reference numerals: 1. Feeding component; 11. Feeding roller; 111. Connecting cylinder; 112. Cylinder magnet; 12. Feeding conveyor roller; 121. Feeding synchronous pulley; 122. First synchronous belt; 2. Feeding adjustment component; 21. First adjustment cone pulley; 211. First adjustment disc; 22. Second adjustment cone pulley; 221. Second adjustment disc; 23. Tension adjustment bottom plate; 24. Tension adjustment block; 25. Tension elastic member; 26. Cone pulley adjustment bottom plate; 261. Adjusting bidirectional lead screw; 27. First adjustment plate; 28. Second adjustment plate; 3. Receiving component; 31. Receiving conveyor roller; 311. Receiving synchronous pulley; 312. Second synchronous belt; 32. Receiving roller; 4. Deviation rectifying component; 41. Linear driving member; 42. Support frame; 43. Rotating head; 5. Feeding transmission member; 501. Transmission sliding cavity; 51. Roller connecting rod; 511. Connecting wheel; 512. Wheel body magnet; 52. Cone pulley connecting rod; 53. First sleeve; 54. Second sleeve; 55. Sleeve rubber ring; 6. Feeding synchronous belt; 7. Die-cutting conveyor motor; 8. Receiving synchronous belt. Detailed implementation manners

[0047] The following further describes the present application in detail with reference to the attached Figure 1-6 drawings.

[0048] An embodiment of the present application discloses a die-cutting and feeding mechanism for lithium battery electrode sheets. Referring to Figure 1 FIGs., the die-cutting and feeding mechanism for lithium battery electrode sheets includes a frame, a feeding component 1, a feeding adjustment component 2, a receiving component 3, and a receiving adjustment component.

[0049] Referring to Figure 1 and Figure 2 FIGs., the frame is provided with a deviation rectifying component 4, and in the embodiment of the present application, there are two deviation rectifying components 4, which are respectively set as a first deviation rectifying component 4 and a second deviation rectifying component 4;

[0050] The first deviation rectifying component 4 is arranged near the input end of the frame. The first deviation rectifying component 4 includes a linear driving member 41, a support frame 42, and a rotating head 43. In the embodiment of the present application, the type of the linear driving member 41 is preferably a linear module. The linear driving member 41 is fixedly installed on the frame, and the linear driving member 41 is distributed in the horizontal direction. The support frame 42 is fixedly installed on the slider of the linear driving member 41, and the rotating head 43 is rotationally matched with the support frame 42 through a bearing. The support frame 42 is fixedly installed with a rotating motor (not shown in the figure), the output shaft of the rotating motor is arranged in the vertical direction, and the rotating head 43 is fixedly installed on the output shaft of the rotating motor to drive the rotating head 43 to rotate along the vertical axis.

[0051] Referring to Figure 1 and Figure 2, the feeding assembly 1 includes a feeding roller 11 and a feeding conveyor roller 12. In the embodiment of the present application, the type of the feeding roller 11 is preferably an air shaft. The axis of the feeding roller 11 is arranged horizontally, and one end of the feeding roller 11 is rotatably fitted to the rotating head 43 so as to drive the feeding roller 11 to swing horizontally through the rotating head 43; in the embodiment of the present application, the number of the feeding conveyor rollers 12 is set to five, and the five feeding conveyor rollers 12 are distributed along the conveying direction of the lithium battery electrode sheet, and the five feeding conveyor rollers 12 are all rotatably fitted to the frame.

[0052] Referring to Figure 3 and Figure 4 , the frame is provided with a feeding transmission member 5. In the embodiment of the present application, there are two feeding transmission members 5, and the two feeding transmission members 5 are respectively set as a first feeding transmission member 5 and a second feeding transmission member 5;

[0053] The first feeding transmission member 5 is arranged at a position close to the feeding roller 11, and the first feeding transmission member 5 includes a transmission sleeve, a roller connecting rod 51 and a cone wheel connecting rod 52;

[0054] The transmission sleeve includes a first sleeve 53, a second sleeve 54 and a sleeve rubber ring 55. The first sleeve 53 and the second sleeve 54 are respectively fixedly installed on both sides of the sleeve rubber ring 55, and both the first sleeve 53 and the second sleeve 54 are rotatably fitted to the frame through bearings. The first sleeve 53 is arranged close to the feeding roller 11, the second sleeve is arranged away from the feeding roller 11, and both the first sleeve 53 and the second sleeve 54 are coaxially arranged with the feeding conveyor roller 12.

[0055] Referring to Figure 3 , a first sliding cavity is opened inside the first sleeve 53, a second sliding cavity is opened inside the second sleeve 54, the second sliding cavity is coaxially arranged with the first sliding cavity, and the first sliding cavity and the second sliding cavity are communicated with each other to form a transmission sliding cavity 501. The cross section of the transmission sliding cavity 501 is in a regular hexagon shape, and the transmission sliding cavity 501 penetrates through the transmission sleeve along the axial direction of the transmission sleeve. One end of the roller connecting rod 51 is slidably fitted to one end of the transmission sliding cavity 501, and the roller connecting rod 51 is arranged in close contact with the inner wall of the transmission sliding cavity 501. One end of the cone wheel connecting rod 52 is slidably fitted to the other end of the transmission sliding cavity 501, and the cone wheel connecting rod 52 is arranged in close contact with the inner wall of the transmission sliding cavity 501.

[0056] Referring to Figure 3, at one end of the roller connecting rod 51 away from the transmission sliding cavity 501, a connecting wheel 511 is coaxially and fixedly installed. The connecting wheel 511 is arranged in a frustum shape, and the end with a larger diameter size of the connecting wheel 511 is close to the roller connecting rod 51. At one end of the connecting wheel 511 away from the roller connecting rod 51, a plurality of teeth are integrally connected, and the plurality of teeth are evenly distributed circumferentially around the axis of the connecting wheel 511. In addition, a wheel body magnet 512 is fixedly embedded at the end of the connecting wheel 511 provided with teeth;

[0057] A connecting cylinder 111 is coaxially and fixedly installed on the feeding roller 11. A connecting groove is opened at one end of the connecting cylinder 111 away from the feeding roller 11. Tooth grooves corresponding to each tooth are opened on the inner wall of the connecting groove, and a cylinder body magnet 112 is fixedly embedded on the inner wall of the connecting groove. When the lithium battery pole piece die-cutting machine operates, a plurality of teeth are respectively engaged with each tooth groove, and the wheel body magnet 512 and the cylinder body magnet 112 are mutually adsorbed, so as to drive the feeding roller 11 to rotate through the roller connecting rod 51. In addition, the frame is rotationally matched with a deviation rectifying disc through a bearing, and the deviation rectifying disc is arranged coaxially with the feeding roller 11, so as to reduce the wear of the pole piece coil.

[0058] Refer to Figure 5 , the feeding adjustment assembly 2 is close to the cone wheel connecting rod 52. The feeding adjustment assembly 2 includes a tension adjustment member, a cone wheel adjustment member, a first adjustment cone wheel 21 and a second adjustment cone wheel 22.

[0059] Refer to Figure 5 , the tension adjustment member includes a tension adjustment bottom plate 23, a tension adjustment block 24 and a tension elastic member 25. The tension adjustment bottom plate 23 is fixedly installed on the frame. Two tension sliding grooves are opened at the top of the tension adjustment bottom plate 23, and both tension sliding grooves extend along the conveying direction of the lithium battery pole piece; in the embodiment of the present application, the number of tension adjustment blocks 24 is set to two, and the two tension adjustment blocks 24 are respectively clamped and matched with each tension sliding groove, and the two tension adjustment blocks 24 are respectively slidably matched with each tension sliding groove; in the embodiment of the present application, the number of tension elastic members 25 is set to four, and the types of the four tension elastic members 25 are preferably springs. The four tension elastic members 25 are divided into two groups. The two groups of tension elastic members are respectively arranged inside each tension sliding groove, and the two tension elastic members 25 in each group are respectively arranged at both ends of the tension adjustment block 24. One end of the tension elastic member 25 is fixedly installed on the inner wall of the tension sliding groove, and the other end of the tension elastic member 25 is fixedly installed on the tension adjustment block 24, and the axis of the tension elastic member 25 is arranged along the extension direction of the tension sliding groove, so as to facilitate the tension adjustment block 24 to reset after sliding in the tension sliding groove.

[0060] Refer to Figure 5, the cone pulley adjusting member is located at the top of the tension adjusting block 24. The cone pulley adjusting member includes a cone pulley adjusting bottom plate 26, a first adjusting plate 27, and a second adjusting plate 28. Both sides of the bottom of the cone pulley adjusting bottom plate 26 are fixedly installed on each tension adjusting block 24 respectively, so as to enable the cone pulley adjusting bottom plate 26 to drive the tension adjusting block 24 to slide in the tension sliding groove. Two slide rails are fixedly installed on the top of the cone pulley adjusting bottom plate 26. Both slide rails extend in the horizontal direction, and the axes of both slide rails are perpendicular to the sliding direction of the tension adjusting block 24. Two sliders are arranged between the two slide rails. The two sliders are distributed along the extending direction of the slide rails, and both sides of the sliders are slidably matched with the two slide rails respectively.

[0061] Referring to Figure 3 and Figure 5 , the first adjusting plate 27 is fixedly installed on the top of one of the sliders, the second adjusting plate 28 is fixedly installed on the top of the other slider, and the first adjusting plate 27 and the second adjusting plate 28 are arranged opposite to each other, so as to enable both the first adjusting plate 27 and the second adjusting plate 28 to be stably slidably matched with the cone pulley adjusting bottom plate 26. The first adjusting cone pulley 21 is rotationally matched with the first adjusting plate 27 through a bearing, the second adjusting cone pulley 22 is rotationally matched with the second adjusting plate 28 through a bearing, and the conical surfaces of the first adjusting cone pulley 21 and the second adjusting cone pulley 22 are arranged opposite to each other, that is, the end with a smaller diameter size of the first adjusting cone pulley 21 is arranged close to the end with a smaller diameter size of the second adjusting cone pulley 22, and the first adjusting cone pulley 21 and the second adjusting cone pulley 22 are coaxially arranged.

[0062] Referring to Figure 5 , the cone pulley adjusting bottom plate 26 is provided with an adjusting driving member. The adjusting driving member includes an adjusting driving motor and an adjusting bidirectional lead screw 261. The adjusting driving motor is fixedly installed on the cone pulley adjusting bottom plate 26. The threads at both ends of the adjusting bidirectional lead screw 261 are arranged in opposite directions. The adjusting bidirectional lead screw 261 is coaxially fixedly installed on the adjusting driving motor, and the adjusting bidirectional lead screw 261 is arranged along the sliding direction of the first adjusting plate 27 and the second adjusting plate 28. One end of the adjusting bidirectional lead screw 261 passes through one of the sliders and is threadedly matched with the slider, and the other end of the adjusting bidirectional lead screw 261 passes through the other slider and is threadedly matched with the slider, so as to drive the first adjusting plate 27 and the second adjusting plate 28 to move towards each other or away from each other by driving the adjusting driving motor.

[0063] Referring to Figure 3, The first adjusting cone pulley 21 is coaxially and rotatably fitted with a first adjusting disc 211 through a bearing. The first adjusting disc 211 is arranged in a frustum shape, and the outer peripheral surface of the first adjusting disc 211 is flush with the outer peripheral surface of the first adjusting cone pulley 21; the second adjusting cone pulley 22 is coaxially and rotatably fitted with a second adjusting disc 221 through a bearing. The second adjusting disc 221 is arranged in a frustum shape, and the outer peripheral surface of the second adjusting disc 221 is flush with the outer peripheral surface of the second adjusting cone pulley 22. The end with the smaller diameter of the second adjusting disc 221 is arranged opposite to the end with the smaller diameter of the first adjusting disc 211, and the end with the smaller diameter of the second adjusting disc 221 is arranged close to the end with the smaller diameter of the first adjusting disc 211.

[0064] Refer to Figure 6 , A feeding synchronous pulley 121 is coaxially and fixedly installed on the feeding conveying roller 12. The feeding synchronous pulleys 121 are connected to each other by a synchronous belt to facilitate the synchronous rotation of each feeding synchronous pulley 121. A feeding synchronous belt 6 is wound between the first adjusting cone pulley 21 and the second adjusting cone pulley 22. The feeding synchronous belt 6 is elastic, and the feeding synchronous belt 6 is also wound around one of the feeding synchronous pulleys 121. The frame is fixedly installed with a die-cutting conveying motor 7. In the embodiment of the present application, the type of the die-cutting conveying motor 7 is preferably a servo motor. An output synchronous pulley is coaxially and fixedly installed on the output shaft of the die-cutting conveying motor 7. A first synchronous belt 122 is wound around one of the feeding synchronous pulleys 121, and the first synchronous belt 122 is wound around the output synchronous pulley to facilitate driving the first adjusting cone pulley 21, the second adjusting cone pulley 22, and each feeding synchronous pulley 121 to rotate synchronously through the die-cutting conveying motor 7.

[0065] Refer to Figure 1 , The second deviation rectifying assembly 4 is arranged near the output end of the frame. In the embodiment of the present application, the structure and its cooperation mode of the second deviation rectifying assembly 4 are the same as those of the first deviation rectifying assembly 4.

[0066] Refer to Figure 1 , The material receiving assembly 3 includes a material receiving conveying roller 31 and a material receiving roller 32. In the embodiment of the present application, the number of the material receiving conveying rollers 31 is set to five. The five material receiving conveying rollers 31 are distributed along the conveying direction of the lithium battery electrode sheet, and the five material receiving conveying rollers 31 are all rotatably fitted on the frame. Refer to Figure 6 , A material receiving synchronous pulley 311 is coaxially and fixedly installed on the material receiving conveying roller 31. The material receiving synchronous pulleys 311 are connected to each other by a synchronous belt;

[0067] A driving synchronous pulley is rotatably fitted at the bottom of the frame. The driving synchronous pulley is connected to the output synchronous pulley by a synchronous belt. A second synchronous belt 312 is wound around one of the material receiving synchronous pulleys 311, and the second synchronous belt 312 is wound around the driving synchronous pulley to facilitate driving each material receiving synchronous pulley 311 to rotate synchronously through the die-cutting driving motor.

[0068] Reference Figure 1 In the embodiment of the present application, the type of the material receiving roller 32 is preferably an air shaft. The axis of the material receiving roller 32 is arranged in the horizontal direction, and one end of the material receiving roller 32 is rotatably fitted to the rotating head 43 of the second deviation rectifying assembly 4;

[0069] The second material feeding transmission member 5 is arranged close to the material receiving roller 32. In the embodiment of the present application, the structure and the matching manner of the second material feeding transmission member 5 are the same as those of the first material feeding transmission member 5, and the matching manner between the material receiving roller 32 and the second material feeding transmission member 5 is the same as the matching manner between the material feeding roller 11 and the first material feeding transmission member 5.

[0070] Reference Figure 5 and Figure 6 The material receiving adjustment assembly is arranged close to the material receiving roller 32. In the embodiment of the present application, the structure and the matching manner of the material receiving adjustment assembly are the same as those of the material feeding adjustment assembly 2. A material receiving synchronous belt 8 is wound around between the first adjustment cone pulley 21 and the second adjustment cone pulley 22 of the material receiving adjustment assembly. The material receiving synchronous belt 8 has elasticity, and the material receiving synchronous belt 8 is also wound around one of the material receiving synchronous pulleys 311, so as to drive the first adjustment cone pulley 21, the second adjustment cone pulley 22 of the material receiving adjustment assembly, the transmission synchronous pulley and each material receiving synchronous pulley 311 to rotate synchronously through the die-cutting conveying motor 7.

[0071] The implementation principle of a die-cutting and feeding mechanism for lithium battery electrode sheets in the embodiment of the present application is as follows: The die-cutting conveying motor 7 drives each material feeding conveying roller 12 to rotate through the first synchronous belt 122, and then drives the material feeding roller 11 to rotate through the material feeding synchronous belt 6; At the same time, the die-cutting conveying motor 7 drives the transmission synchronous pulley to rotate through the synchronous belt, and then drives each material receiving conveying roller 31 to rotate through the second synchronous belt 312, so as to drive the material receiving roller 32 to rotate through the material receiving synchronous belt 8. By driving the material feeding roller 11, the material feeding conveying roller 12, the material receiving roller 32 and the material receiving conveying roller 31 to rotate simultaneously through the die-cutting conveying motor 7, the speed of the electrode sheet coil input into the die-cutting mechanism is the same as the speed output from the die-cutting mechanism, so that the electrode sheet coil is liable to stay in the die-cutting mechanism after die-cutting and affect the die-cutting of the die-cutting mechanism, thereby ensuring the die-cutting accuracy of the lithium battery electrode sheet die-cutting machine.

[0072] The embodiment of the present application also provides a die-cutting method for a die-cutting and feeding mechanism for lithium battery electrode sheets, which specifically includes the following steps:

[0073] S1. Place the electrode sheet coil.

[0074] S11. The linear driving member 41 drives the support frame 42 to move in the horizontal direction;

[0075] S12. The rotating head 43 drives the material feeding roller 11 to swing in the horizontal direction;

[0076] S13. Sheath the pole piece coil around the unwinding roller 11.

[0077] S2. Mount the unwinding roller 11 coaxially on the second adjusting cone pulley 22.

[0078] S21. The rotating head 43 drives the unwinding roller 11 to swing reversely in the horizontal direction;

[0079] In any one of steps S11 to S21, the adjusting drive motor drives the first adjusting cone pulley 21 and the second adjusting cone pulley 22 to move away from each other, and both sides of the unwinding synchronous belt 6 are respectively abutted and fitted to the first adjusting disc 211 and the second adjusting disc 221;

[0080] S22. The linear drive member 41 drives the support frame 42 to move reversely in the horizontal direction.

[0081] After several teeth are respectively engaged with each tooth groove, the pole piece coil is traction-fixedly connected to the winding roller 32, and then the adjusting drive motor drives the first adjusting cone pulley 21 and the second adjusting cone pulley 22 to move towards each other, and both sides of the unwinding synchronous belt 6 are respectively abutted and fitted to the first adjusting cone pulley 21 and the second adjusting cone pulley 22.

[0082] S3. Start the die-cutting and conveying motor 7.

[0083] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A die-cutting and feeding mechanism for lithium battery electrode sheets, characterized in that: it includes a frame, a feeding assembly (1), a collecting assembly (3) and a feeding adjustment assembly (2). The feeding assembly (1) includes a feeding roller (11) and a feeding conveying roller (12), and both the feeding roller (11) and the feeding conveying roller (12) are rotatably fitted to the frame; the collecting assembly (3) includes a collecting roller (32) and a collecting conveying roller (31), and both the collecting roller (32) and the collecting conveying roller (31) are rotatably fitted to the frame; the feeding adjustment assembly (2) includes a first adjustment cone pulley (21), a second adjustment cone pulley (22), a cone pulley adjustment member and a tension adjustment member. The conical surface of the first adjustment cone pulley (21) is arranged facing the conical surface of the second adjustment cone pulley (22), and the first adjustment cone pulley (21) and the second adjustment cone pulley (22) are coaxially arranged. A feeding synchronous belt (6) is wound between the first adjustment cone pulley (21) and the second adjustment cone pulley (22), and the feeding roller (11) is coaxially installed on the second adjustment cone pulley (22); the cone pulley adjustment member is used to drive the first adjustment cone pulley (21) and the second adjustment cone pulley (22) to move towards or away from each other, and the tension adjustment member is used to adjust the tightness of the feeding synchronous belt (6); the frame is provided with a die-cutting conveying motor (7), and the die-cutting conveying motor (7) is used to drive the feeding synchronous belt (6), the feeding conveying roller (12) and the collecting conveying roller (31) to rotate simultaneously; the cone pulley adjustment member includes a first adjustment plate (27), a second adjustment plate (28) and a cone pulley adjustment bottom plate (26). The first adjustment cone pulley (21) is rotatably fitted to the first adjustment plate (27), the second adjustment cone pulley (22) is rotatably fitted to the second adjustment plate (28), and both the first adjustment plate (27) and the second adjustment plate (28) are slidably fitted to the cone pulley adjustment bottom plate (26). The cone pulley adjustment bottom plate (26) is provided with an adjustment driving member, and the adjustment driving member is used to drive the first adjustment plate (27) and the second adjustment plate (28) to move towards or away from each other; the first adjustment cone pulley (21) is coaxially and rotatably fitted with a first adjustment disc (211) through a bearing. The first adjustment disc (211) is arranged in a frustum shape, and the outer peripheral surface of the first adjustment disc (211) is flush with the outer peripheral surface of the first adjustment cone pulley (21); the second adjustment cone pulley (22) is coaxially and rotatably fitted with a second adjustment disc (221) through a bearing. The second adjustment disc (221) is arranged in a frustum shape, and the outer peripheral surface of the second adjustment disc (221) is flush with the outer peripheral surface of the second adjustment cone pulley (22). The smaller-diameter end of the second adjustment disc (221) is arranged facing the smaller-diameter end of the first adjustment disc (211), and the smaller-diameter end of the second adjustment disc (221) is arranged close to the smaller-diameter end of the first adjustment disc (211); The feeding synchronous belt (6) is wound around the feeding conveying roller (12), the first synchronous belt (122) is wound around the feeding conveying roller (12), and the first synchronous belt (122) is wound around the output shaft of the die-cutting conveying motor (7); When installing the pole piece coil on the feeding roller (11), the first adjusting disc (211) and the second adjusting disc (221) are both tightly abutted and fitted to the feeding synchronous belt (6), so that the feeding roller (11) is not easily difficult to rotate due to the feeding conveying roller (12), the receiving conveying roller (31) and the die-cutting conveying motor (7), thereby facilitating the rotation and adjustment of the angle of the pole piece coil after the pole piece coil is installed on the feeding roller (11) and facilitating the traction of the pole piece coil.

2. A die-cutting and feeding mechanism for lithium battery pole pieces according to claim 1, Characterized in that: The machine frame is provided with a deviation rectifying assembly (4), and the deviation rectifying assembly (4) is used to drive the feeding roller (11) to move along its own axis direction.

3. A die-cutting and feeding mechanism for lithium battery pole pieces according to claim 2, Characterized in that: The machine frame is rotatably fitted with a feeding transmission member (5), and the feeding transmission member (5) includes a transmission sleeve, a conical wheel connecting rod (52) and a roller body connecting rod (51). The transmission sleeve is rotatably fitted to the machine frame. The conical wheel connecting rod (52) is coaxially and fixedly installed on the second adjusting conical wheel (22). The conical wheel connecting rod (52) is slidably fitted to the transmission sleeve. The roller body connecting rod (51) is coaxially installed on the feeding roller (11). The roller body connecting rod (51) is slidably fitted to the transmission sleeve, and the roller body connecting rod (51) is coaxially arranged with the conical wheel connecting rod (52).

4. A die-cutting and feeding mechanism for lithium battery pole pieces according to claim 3, Characterized in that: The feeding roller (11) is detachably installed on the roller body connecting rod (51); the deviation rectifying assembly (4) includes a rotating head (43), a support frame (42) and a linear driving member (41). The feeding roller (11) is rotatably fitted to the rotating head (43). The rotating head (43) is installed on the support frame (42), and the linear driving member (41) is used to drive the support frame (42) to move along the axis direction of the feeding roller (11).

5. A die-cutting and feeding mechanism for lithium battery pole pieces according to claim 3, Characterized in that: A connecting wheel (511) is coaxially and fixedly installed on the roller body connecting rod (51). The outer peripheral surface of the connecting wheel (511) is provided with teeth. A connecting cylinder (111) is coaxially and fixedly installed on the feeding roller (11). A connecting groove is formed in the connecting cylinder (111), and the inner wall of the connecting groove is provided with tooth grooves corresponding to the teeth; A wheel body magnet (512) is fixedly installed on the connecting wheel (511), a cylinder body magnet (112) is fixedly installed on the connecting cylinder (111), and the wheel body magnet (512) is adsorbed on the cylinder body magnet (112).

6. A die-cutting method for a die-cutting and feeding mechanism of lithium battery pole pieces, Characterized in that: It is used for the die-cutting and feeding mechanism of lithium battery pole pieces according to any one of claims 1-5, and includes the following specific steps: S1. Place the pole piece coil; S2. Mount the material feeding roller (11) coaxially on the second adjusting cone pulley (22); S3. Start the die-cutting conveyor motor (7).

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