Pole piece feeding, pressing and shaping mechanism

Abstract

The utility model relates to a pole piece feeding, tabletting and shaping mechanism in the tabletting and shaping mechanism field, which comprises a piece feeding platform, two ends of the piece feeding platform along the length direction are respectively connected with a first stop block and a second stop block, the piece feeding platform is provided with a material guide groove with two open sides, and the upper surface of the piece feeding platform is provided with a vacuum adsorption hole. A tablet pressing driving piece is arranged on the tablet feeding platform, one end of the tablet pressing driving piece extends towards the tablet feeding platform to form a telescopic end, the telescopic end of the tablet pressing driving piece is connected with a soft pressing block through a connecting base, and the side face of the connecting base is connected with a rotatable shaping pressing wheel through a buffering piece; the connecting base is driven by the telescopic end of the pressing piece driving piece, so that the soft pressing block and the shaping pressing wheel can be driven to move towards the piece feeding platform and make contact with the pole piece on the guide groove, the edges of the two sides of the pole piece can be further shaped in the piece pressing process, burrs or unevenness is eliminated, and the quality of the pole piece is improved. The appearance quality and the size precision of the pole piece are improved, and the production quality and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of tablet pressing and shaping mechanisms, especially to the field of lithium battery pole piece winding machines, and specifically to a pole piece feeding, pressing and shaping mechanism. Background Art

[0002] Lithium-ion batteries are a new generation of green high-energy batteries with excellent performance and have become one of the key points in the development of high-tech. Lithium-ion batteries have the following characteristics: high voltage, high capacity, low consumption, no memory effect, pollution-free, small size, small internal resistance, less self-discharge, and many cycle times. Due to the above characteristics, lithium-ion batteries are widely used in many civilian and military fields such as mobile phones, laptops, and tablet computers. In recent years, the lithium-ion battery manufacturing industry has developed rapidly, and the process quality requirements for manufacturing battery cores have been continuously improved. The accurate pushing of pole pieces and the high precision of the center distance of the pole ears of the core play an important role in ensuring consistent battery performance and stable quality during the production process.

[0003] The lithium battery pole piece winding technology, as a key link in battery manufacturing, is widely used in multiple fields, especially playing an irreplaceable role in new energy vehicles, portable electronic devices, energy storage systems, and aerospace. Existing lithium battery winding machines consist of multiple mechanisms, including a pole piece feeding and pressing mechanism, which is mainly used to transport the positive / negative pole pieces and accurately wind them with the separator into a battery core according to a certain order and tension.

[0004] However, there are still some deficiencies in the pole piece feeding and pressing of existing lithium battery core pole piece winding machines. First, the general pressing structure for pressing the pole piece is a sponge, which will deform after long-term use, and the contact between the sponge and the pole piece is prone to blackening, thus affecting the quality and stability of pressing the pole piece, and also affecting the aesthetics, which is not conducive to use. Second, when the existing pole piece is transported along the feeding structure, burrs are easily generated on both sides of the pole piece in contact with the guide groove on the feeding structure, resulting in the burrs easily piercing the separator, affecting the production efficiency and product quality of the pole piece, and also increasing the production cost and defective rate. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the above defects and provide a pole piece feeding, pressing and shaping mechanism to solve the technical problems that the pressing structure of the pole piece in the above background art is prone to deformation and blackening, thus affecting the quality and stability of pressing the pole piece, and that burrs are easily generated on the side of the pole piece in contact with the guide groove during transportation, thus affecting the use.

[0006] The purpose of the utility model is achieved in the following way:

[0007] The pole piece feeding, pressing and shaping mechanism includes a feeding platform. At both ends of the feeding platform in the length direction, a first stop block and a second stop block are respectively connected. A feeding groove with openings on both sides is formed on the feeding platform through the first stop block and the second stop block at both ends. A pole piece that can slide along the feeding groove is arranged on the feeding platform. A plurality of vacuum adsorption holes for pole piece positioning are opened on the upper surface of the feeding platform. A pressing driving member is arranged on the feeding platform. One end of the pressing driving member extends towards the feeding platform to form a telescopic end. The telescopic end of the pressing driving member can telescopically move towards the feeding platform. The telescopic end of the pressing driving member is connected with a soft pressing block through a connecting seat. The side surface of the connecting seat is connected with a rotatable shaping pressing wheel through a buffer member. The connecting seat is driven by the telescopic end of the pressing driving member, so as to drive the soft pressing block and the shaping pressing wheel to move towards the feeding platform and contact the pole piece on the feeding groove.

[0008] Further in the above description, the soft pressing block is made of urethane rubber or silica gel.

[0009] Being composed of urethane rubber or silica gel makes the soft pressing block have the effect of being durable, and at the same time improves the wear resistance of contacting with the pole piece.

[0010] Further in the above description, the soft pressing block is composed of a circular rubber rod. Both ends of the circular rubber rod are connected with the connecting seat through bearings, so that the circular rubber roller can rotate.

[0011] Optionally, bearings are provided so that the soft pressing block can rotate, and the pole piece is roll-pressed, improving the pressing and shaping effect in use.

[0012] Further in the above description, an installation block for connecting with the outside is connected to the pressing driving member. The telescopic end of the pressing driving member is connected and installed with the connecting seat through a connecting block.

[0013] Optionally, the pressing driving member is a driving electric cylinder or a driving air cylinder.

[0014] Further in the above description, an installation groove is opened at the end of the connecting seat close to the feeding platform. The soft pressing block is installed in the installation groove, and the outer side surface of the soft pressing block is exposed outside the installation groove and extends towards the feeding groove.

[0015] Optionally, a part of the soft pressing block is clamped and installed in the installation groove or installed in the installation groove by bonding. The other part of the soft pressing block is exposed outside the installation groove, so that it can conveniently contact the pole piece.

[0016] Further in the above description, the outer side surface of the soft pressing block extending towards the feeding groove is arc-shaped or parallel to the feeding groove. By setting the arc to contact the pole piece, it is convenient to press the pole piece, preventing the pole piece from slipping out when sliding along the feeding groove, improving the quality of pressing and the stability in use.

[0017] Optionally, a soft pressing block is made of soft silicone rubber so that it can be in full contact with the pole piece, and the silicone rubber setting can reduce the blackening phenomenon and improve the aesthetics of use.

[0018] Further in the above description, the cross-section of the soft pressing block is circular.

[0019] Further in the above description, an adjusting block is detachably connected to the side of the connecting seat. An adjusting groove for installing a buffer member is formed in the adjusting block. The buffer member can be adjusted to move along the adjusting groove. The buffer member includes a mounting seat, a bushing, a guiding shaft and a lifting block. The mounting seat is connected to the adjusting groove, and a through hole for installing the bushing is formed in the mounting seat. The guiding shaft passes through the bushing and is coaxially connected, and can move up and down along the axial direction of the bushing. A spring is sleeved on the guiding shaft. One end of the guiding shaft extending towards the sheet feeding platform is connected to the lifting block. The shaping pressing wheel is connected to the lifting block through a connecting member.

[0020] By forming the adjusting groove in the adjusting block, it is convenient to adjust and install the mounting seat along the adjusting groove, so that it can be adjusted according to the width of the pole piece. The shaping pressing wheel is installed on the lifting block, and the lifting block is connected to one end of the guiding shaft. When the pressing piece driving member drives the connecting seat to move towards the material guiding groove, the impact force when the shaping pressing wheel on the lifting block contacts the pole piece can be reduced through the guiding shaft, thereby improving the protection effect on the pole piece and enhancing the service life.

[0021] Further in the above description, one end of the spring abuts against the mounting seat, and the other end of the spring abuts against the lifting block.

[0022] The arranged spring can play a role in buffering and resetting the guiding shaft, and reduce the contact force between the shaping pressing wheel on the lifting block and the pole piece when the pressing piece driving member drives quickly.

[0023] Further in the above description, two shaping pressing wheels are provided, and the two shaping pressing wheels are relatively distributed on both sides of the material guiding groove. The two relatively arranged shaping pressing wheels can flatten and shape both sides of the pole piece, reduce the burr phenomenon generated when both sides of the pole piece contact the first stop block and the second stop block, and thus reduce the risk of the burr piercing the diaphragm.

[0024] Advantages of the present utility model: Through the design of vacuum adsorption holes on the sheet feeding platform, accurate positioning and stable transportation of the pole piece are achieved. Moreover, the pole piece can slide along the material guiding groove to prevent the pole piece from shifting or slipping during transportation. By driving the connecting seat to move towards the sheet feeding platform through the telescopic end of the sheet pressing driving part, the soft pressing block can accurately and quickly approach the material guiding groove and contact the upper surface of the pole piece, thereby realizing the sheet pressing operation on the pole piece. At the same time, when the pole piece slides along the material guiding groove, burrs are likely to be generated at the contacts between the two sides of the pole piece and the first stop block and the second stop block respectively. When the connecting seat moves towards the feeding platform, the shaping pressing wheel connected to the connecting seat through the buffer part can further shape the edges of both sides of the pole piece during the sheet pressing process, eliminating burrs or unevenness, improving the appearance quality and dimensional accuracy of the pole piece, and further reducing the phenomenon of burrs piercing the diaphragm in the subsequent process. And through the introduction of the buffer part, the impact force generated during the movement of the shaping pressing wheel towards the feeding platform driven by the sheet pressing driving part is effectively alleviated, avoiding damage to the pole piece that may be caused by the direct hard contact of the shaping pressing wheel, protecting the integrity of the pole piece, extending the service life of the equipment, and improving the quality and efficiency of production. Description of the Drawings

[0025] Figure 1 is a perspective view of the front view angle of this embodiment;

[0026] Figure 2 is a perspective view of the side view angle of this embodiment;

[0027] Figure 3 is Figure 2 a partial enlarged schematic view of A in

[0028] Figure 4 is a partial exploded view of this embodiment;

[0029] Figure 5 is the front view of this embodiment;

[0030] Figure 6 is the cross-sectional view of this embodiment;

[0031] The reference numerals in the drawings are respectively: 1 - sheet feeding platform, 2 - first stop block, 3 - second stop block, 4 - material guiding groove, 5 - pole piece, 6 - vacuum adsorption hole, 7 - sheet pressing driving part, 8 - telescopic end, 9 - connecting seat, 10 - soft pressing block, 11 - buffer part, 111 - mounting seat, 112 - bushing, 113 - guiding shaft, 114 - lifting block, 115 - spring, 12 - shaping pressing wheel, 13 - mounting block, 14 - connecting block, 15 - mounting groove, 16 - adjusting block, 17 - adjusting groove. Detailed Embodiment

[0032] The present utility model will be further described in detail below in conjunction with the drawings and the specific embodiments.

[0033] In this embodiment, referring to Figures 1 - 6 , the specific pole piece 5 feeding, pressing and shaping mechanism includes a feeding platform 1. At both ends of the feeding platform 1 in the length direction, a first stop block 2 and a second stop block 3 are respectively connected. A material guiding groove 4 with openings on both sides is formed on the feeding platform 1 through the first stop block 2 and the second stop block 3 at both ends. The first stop block 2 and the second stop block 3 arranged at both ends of the feeding platform 1 not only form the material guiding groove 4 with openings on both sides, but also can adjust the width of the material guiding groove 4 by adjusting the second stop block 3, so as to be able to adapt to pole pieces 5 of different sizes or shapes, enhancing the versatility and adaptability of the equipment.

[0034] A pole piece 5 that can slide along the material guiding groove 4 is arranged on the feeding platform 1. Vacuum adsorption holes 6 for positioning the pole piece 5 are opened on the upper surface of the feeding platform 1. A pressing driving member 7 is arranged on the feeding platform 1. One end of the pressing driving member 7 extends towards the feeding platform 1 to form a telescopic end 8. The telescopic end 8 of the pressing driving member 7 can telescopically move towards the feeding platform 1. The telescopic end 8 of the pressing driving member 7 is connected with a soft pressing block 10 through a connecting seat 9. The side surface of the connecting seat 9 is connected with a rotatable shaping pressing wheel 12 through a buffer member 11. The connecting seat 9 is driven by the telescopic end 8 of the pressing driving member 7, so as to drive the soft pressing block 10 and the shaping pressing wheel 12 to move towards the feeding platform 1 and contact the pole piece 5 on the material guiding groove 4.

[0035] An installation block 13 for connecting with the outside is connected to the pressing driving member 7. The telescopic end 8 of the pressing driving member 7 is connected and installed with the connecting seat 9 through a connecting block 14. Specifically, the pressing driving member 7 is a driving cylinder.

[0036] An installation groove 15 is opened at the end of the connecting seat 9 close to the feeding platform 1. The soft pressing block 10 is installed in the installation groove 15, and the outer side surface of the soft pressing block 10 is exposed outside the installation groove 15 and extends towards the material guiding groove 4. Specifically, a part of the soft pressing block 10 is clamped and installed in the installation groove 15, and the other part of the soft pressing block 10 is exposed outside the installation groove 15, so that it can be conveniently contacted with the pole piece 5.

[0037] The outer side surface of the soft pressing block 10 extending towards the material guiding groove 4 is arc-shaped. Specifically, the cross-section of the soft pressing block 10 is circular. By setting the arc to contact the pole piece 5, it is convenient to press the pole piece 5, preventing the pole piece 5 from slipping out when the pole piece 5 slides along the material guiding groove 4, improving the quality of pressing and the stability of use. Specifically, the soft pressing block 10 is made of soft silicone, so that it can be fully contacted with the pole piece 5, and the silicone setting can reduce the blackening phenomenon, improving the aesthetics of use. The soft pressing block 10 has the effect of being durable, and at the same time improves the wear resistance of contact with the pole piece.

[0038] In some embodiments, the soft briquette 10 is composed of a circular rubber roller. Both ends of the circular rubber roller are connected to the connecting seat 9 through corresponding bearings. Specifically, the connecting seat 9 is arranged in a "concave" shape, so that the circular rubber roller is installed on the connecting seat and the circular rubber roller can rotate. After the soft briquette contacts the pole piece through the arranged bearing, during the operation of conveying the pole piece, the circular rubber roller rolls and presses it, improving the pressing and shaping effect in use.

[0039] The side of the connecting seat 9 is detachably connected with an adjusting block 16. An adjusting groove 17 for installing a buffer member 11 is formed on the adjusting block 16. The buffer member 11 can be adjusted to move along the adjusting groove 17. The buffer member 11 includes a mounting seat 111, a bushing 112, a guide shaft 113 and a lifting block 114. The mounting seat 111 is connected to the adjusting groove 17, and a through hole for installing the bushing 112 is formed on the mounting seat 111. The guide shaft 113 passes through the bushing 112 and is coaxially connected, and can move up and down along the axial direction of the bushing 112. A spring 115 is sleeved on the guide shaft 113. One end of the guide shaft 113 extending towards the sheet feeding platform 1 is connected to the lifting block 114. The shaping pressing wheel 12 is connected to the lifting block 114 through a connecting member.

[0040] By forming the adjusting groove 17 on the adjusting block 16, it is convenient to adjust and install the mounting seat 111 along the adjusting groove 17, so that it can be adjusted according to the width of the pole piece 5. The shaping pressing wheel 12 is installed on the lifting block 114. The lifting block 114 is connected to one end of the guide shaft 113. When the pressing piece driving member 7 drives the connecting seat 9 to move towards the material guiding groove 4, the impact force when the shaping pressing wheel 12 on the lifting block 114 contacts the pole piece 5 can be reduced through the guide shaft 113, thereby improving the protection effect on the pole piece 5 and enhancing the service life.

[0041] One end of the spring 115 abuts against the mounting seat 111, and the other end of the spring 115 abuts against the lifting block 114. The arranged spring 115 can play a buffering and resetting role for the guide shaft 113, reducing the contact force between the shaping pressing wheel 12 on the lifting block 114 and the pole piece 5 when the pressing piece driving member 7 drives quickly.

[0042] Two shaping pressing wheels 12 are provided, and the two shaping pressing wheels 12 are distributed relatively on both sides of the material guiding groove 4. The two relatively arranged shaping pressing wheels 12 can flatten and shape both sides of the pole piece 5, reducing the burr phenomenon generated when both sides of the pole piece 5 contact the first stop block 2 and the second stop block 3, thereby reducing the risk of the burr piercing the diaphragm.

[0043] The specific operation process in this embodiment is as follows: Install the sheet feeding, pressing, and shaping mechanism for the electrode sheet 5 on the suction type lithium battery electrode sheet winding machine. Connect the vacuum mechanism to the side of the feeding platform. When the electrode sheet 5 enters through an opening of the guiding groove 4, through the design of the vacuum adsorption holes 6 on the sheet feeding platform 1, accurate positioning and stable transportation of the electrode sheet 5 are achieved, and the electrode sheet 5 can slide along the guiding groove 4 to prevent the offset or slippage of the electrode sheet 5 during transportation. The telescopic end 8 of the pressing driving member 7 drives the connecting seat 9 to move towards the sheet feeding platform 1, so that the soft pressing block 10 can accurately and quickly approach the guiding groove 4 on the sheet feeding platform 1 and contact the upper surface of the electrode sheet 5 in the guiding groove 4. The electrode sheet 5 is driven by the conveying mechanism of the winding machine and exported through the other opening of the guiding groove 4, so that the soft pressing block 10 can perform the pressing operation on the electrode sheet 5. The soft pressing block 10 made of silica gel reduces the phenomenon of contact deformation and blackening with the electrode sheet 5;

[0044] At the same time, when the electrode sheet 5 slides along the guiding groove 4, burrs are easily generated at the contacts between the two sides of the electrode sheet 5 and the first stop block 2 and the second stop block 3 respectively. When the connecting seat 9 moves towards the feeding platform, the shaping pressing wheel 12 connected to the connecting seat 9 through the buffer member 11 can further shape the edges of the two sides of the electrode sheet 5 during the pressing process, eliminate burrs or unevenness, improve the appearance quality and dimensional accuracy of the electrode sheet 5, and further reduce the phenomenon of burrs piercing the diaphragm in the subsequent process. And through the guiding shaft 113 connecting the lifting block 114, the shaping pressing wheel 12 on the lifting block 114 can be adjusted up and down under the action of the guiding shaft 113, and the spring 115 can effectively relieve the impact force generated during the movement of the shaping pressing wheel 12 driven by the pressing driving member 7 towards the feeding platform, avoiding the damage that the shaping pressing wheel directly contacting rigidly may cause to the electrode sheet 5, protecting the integrity of the electrode sheet 5, and extending the service life of the equipment.

[0045] In summary, the sheet feeding, pressing, and shaping mechanism for the electrode sheet 5 of the present utility model can perform accurate positioning, efficient pressing and shaping, and protect the electrode sheet 5, thereby improving the overall production efficiency and product quality.

[0046] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention is disclosed above in a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art, without departing from the technical solution scope of the present invention, when making some changes or modifications using the above-disclosed technical content into equivalent embodiments of equivalent changes, but as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments according to the technical means of the present invention all fall within the scope of the technical solution of the present invention.

Claims

1. A pole piece feeding, pressing and shaping mechanism, comprising a feeding platform, wherein the two ends of the feeding platform along the length direction are respectively connected with a first stopper and a second stopper, and a material guide groove with openings on both sides is formed by the first stopper and the second stopper at both ends of the feeding platform, a pole piece that can slide along the material guide groove is arranged on the feeding platform, and a plurality of vacuum adsorption holes for positioning the pole piece are opened on the upper surface of the feeding platform, characterized in that: A tablet pressing drive component is arranged on the sheet feeding platform, one end of the tablet pressing drive component extends toward the sheet feeding platform to form a telescopic end, the telescopic end of the tablet pressing drive component can be telescopically moved toward the sheet feeding platform, and the telescopic end of the tablet pressing drive component is connected to a soft pressing block via a connecting seat, and a rotatable shaping pressing wheel is connected to the side of the connecting seat via a buffer, and the connecting seat is driven by the telescopic end of the tablet pressing drive component, thereby driving the soft pressing block and the shaping pressing wheel to move toward the sheet feeding platform and contact the pole piece on the material guide trough.

2. The electrode feeding, pressing and shaping mechanism according to claim 1 is characterized in that: The soft pressing block is made of urethane foam or silica gel.

3. The electrode feeding, pressing and shaping mechanism according to claim 1 is characterized in that: The soft pressing block is composed of a rotatable round rubber roller, both ends of which are connected to a connecting seat through bearings, so that the round rubber roller can rotate.

4. The electrode feeding, pressing and shaping mechanism according to claim 1 is characterized in that: The pressing piece driving member is connected with a mounting block for connecting with the outside, and the telescopic end of the pressing piece driving member is connected and mounted with the connecting seat through the connecting block.

5. The electrode feeding, pressing and shaping mechanism according to claim 1 is characterized in that: The end of the connecting seat close to the sheet feeding platform is provided with a mounting groove, the soft pressing block is installed in the mounting groove, and the outer side surface of the soft pressing block is exposed outside the mounting groove and extends toward the material guide groove.

6. The electrode feeding, pressing and shaping mechanism according to claim 5, characterized in that: The outer side surface of the soft pressing block extending toward the material guiding groove is arc-shaped or arranged in parallel with the material guiding groove.

7. The electrode feeding, pressing and shaping mechanism according to claim 5, characterized in that: The cross section of the soft pressing block is circular.

8. The electrode feeding, pressing and shaping mechanism according to claim 1 is characterized in that: The side of the connecting seat is detachably connected with an adjusting block, and an adjusting groove for installing a buffer is provided on the adjusting block. The buffer can be moved and adjusted along the adjusting groove. The buffer includes a mounting seat, a bushing, a guide shaft and a lifting block. The mounting seat is connected with the adjusting groove, and a through hole for installing the bushing is provided on the mounting seat. The guide shaft passes through the bushing and is coaxially connected, and can be lifted and moved along the axial direction of the bushing. A spring is sleeved on the guide shaft, and one end of the guide shaft extending to the sheet feeding platform is connected to the lifting block, and the shaping pressure wheel is connected to the lifting block through a connecting piece.

9. The electrode feeding, pressing and shaping mechanism according to claim 8, characterized in that: One end of the spring abuts against the mounting seat, and the other end of the spring abuts against the lifting block.

10. The electrode feeding, pressing and shaping mechanism according to any one of claims 1 to 9, characterized in that: The two shaping pressing wheels are arranged, and the two shaping pressing wheels are relatively distributed on both sides of the material guiding trough.

Images